LCOV - code coverage report
Current view: top level - spdk/test/unit/lib/bdev/bdev.c - bdev_ut.c (source / functions) Hit Total Coverage
Test: Combined Lines: 4590 4606 99.7 %
Date: 2024-07-15 12:47:25 Functions: 141 157 89.8 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 662 1068 62.0 %

           Branch data     Line data    Source code
       1                 :            : /*   SPDX-License-Identifier: BSD-3-Clause
       2                 :            :  *   Copyright (C) 2017 Intel Corporation. All rights reserved.
       3                 :            :  *   Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved.
       4                 :            :  *   Copyright (c) 2021-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
       5                 :            :  */
       6                 :            : 
       7                 :            : #include "spdk_internal/cunit.h"
       8                 :            : 
       9                 :            : #include "common/lib/ut_multithread.c"
      10                 :            : #include "unit/lib/json_mock.c"
      11                 :            : 
      12                 :            : #include "spdk/config.h"
      13                 :            : /* HACK: disable VTune integration so the unit test doesn't need VTune headers and libs to build */
      14                 :            : #undef SPDK_CONFIG_VTUNE
      15                 :            : 
      16                 :            : #include "bdev/bdev.c"
      17                 :            : 
      18         [ -  + ]:        480 : DEFINE_STUB(spdk_notify_send, uint64_t, (const char *type, const char *ctx), 0);
      19         [ -  + ]:        240 : DEFINE_STUB(spdk_notify_type_register, struct spdk_notify_type *, (const char *type), NULL);
      20         [ #  # ]:          0 : DEFINE_STUB(spdk_memory_domain_get_dma_device_id, const char *, (struct spdk_memory_domain *domain),
      21                 :            :             "test_domain");
      22         [ #  # ]:          0 : DEFINE_STUB(spdk_memory_domain_get_dma_device_type, enum spdk_dma_device_type,
      23                 :            :             (struct spdk_memory_domain *domain), 0);
      24                 :          0 : DEFINE_STUB_V(spdk_accel_sequence_finish,
      25                 :            :               (struct spdk_accel_sequence *seq, spdk_accel_completion_cb cb_fn, void *cb_arg));
      26                 :          0 : DEFINE_STUB_V(spdk_accel_sequence_abort, (struct spdk_accel_sequence *seq));
      27                 :          0 : DEFINE_STUB_V(spdk_accel_sequence_reverse, (struct spdk_accel_sequence *seq));
      28         [ #  # ]:          0 : DEFINE_STUB(spdk_accel_append_copy, int,
      29                 :            :             (struct spdk_accel_sequence **seq, struct spdk_io_channel *ch, struct iovec *dst_iovs,
      30                 :            :              uint32_t dst_iovcnt, struct spdk_memory_domain *dst_domain, void *dst_domain_ctx,
      31                 :            :              struct iovec *src_iovs, uint32_t src_iovcnt, struct spdk_memory_domain *src_domain,
      32                 :            :              void *src_domain_ctx, spdk_accel_step_cb cb_fn, void *cb_arg), 0);
      33         [ #  # ]:          0 : DEFINE_STUB(spdk_accel_get_memory_domain, struct spdk_memory_domain *, (void), NULL);
      34                 :            : 
      35                 :            : static bool g_memory_domain_pull_data_called;
      36                 :            : static bool g_memory_domain_push_data_called;
      37                 :            : static int g_accel_io_device;
      38                 :            : 
      39         [ #  # ]:          0 : DEFINE_RETURN_MOCK(spdk_memory_domain_pull_data, int);
      40                 :            : int
      41                 :         15 : spdk_memory_domain_pull_data(struct spdk_memory_domain *src_domain, void *src_domain_ctx,
      42                 :            :                              struct iovec *src_iov, uint32_t src_iov_cnt, struct iovec *dst_iov, uint32_t dst_iov_cnt,
      43                 :            :                              spdk_memory_domain_data_cpl_cb cpl_cb, void *cpl_cb_arg)
      44                 :            : {
      45                 :         15 :         g_memory_domain_pull_data_called = true;
      46   [ -  +  +  +  :         15 :         HANDLE_RETURN_MOCK(spdk_memory_domain_pull_data);
                   +  + ]
      47                 :         12 :         cpl_cb(cpl_cb_arg, 0);
      48                 :         12 :         return 0;
      49                 :            : }
      50                 :            : 
      51         [ #  # ]:          0 : DEFINE_RETURN_MOCK(spdk_memory_domain_push_data, int);
      52                 :            : int
      53                 :         15 : spdk_memory_domain_push_data(struct spdk_memory_domain *dst_domain, void *dst_domain_ctx,
      54                 :            :                              struct iovec *dst_iov, uint32_t dst_iovcnt, struct iovec *src_iov, uint32_t src_iovcnt,
      55                 :            :                              spdk_memory_domain_data_cpl_cb cpl_cb, void *cpl_cb_arg)
      56                 :            : {
      57                 :         15 :         g_memory_domain_push_data_called = true;
      58   [ -  +  +  +  :         15 :         HANDLE_RETURN_MOCK(spdk_memory_domain_push_data);
                   +  + ]
      59                 :         12 :         cpl_cb(cpl_cb_arg, 0);
      60                 :         12 :         return 0;
      61                 :            : }
      62                 :            : 
      63                 :            : struct spdk_io_channel *
      64                 :        105 : spdk_accel_get_io_channel(void)
      65                 :            : {
      66                 :        105 :         return spdk_get_io_channel(&g_accel_io_device);
      67                 :            : }
      68                 :            : 
      69                 :            : int g_status;
      70                 :            : int g_count;
      71                 :            : enum spdk_bdev_event_type g_event_type1;
      72                 :            : enum spdk_bdev_event_type g_event_type2;
      73                 :            : enum spdk_bdev_event_type g_event_type3;
      74                 :            : enum spdk_bdev_event_type g_event_type4;
      75                 :            : struct spdk_histogram_data *g_histogram;
      76                 :            : void *g_unregister_arg;
      77                 :            : int g_unregister_rc;
      78                 :            : 
      79                 :            : void
      80                 :          0 : spdk_scsi_nvme_translate(const struct spdk_bdev_io *bdev_io,
      81                 :            :                          int *sc, int *sk, int *asc, int *ascq)
      82                 :            : {
      83                 :          0 : }
      84                 :            : 
      85                 :            : static int
      86                 :        105 : ut_accel_ch_create_cb(void *io_device, void *ctx)
      87                 :            : {
      88                 :        105 :         return 0;
      89                 :            : }
      90                 :            : 
      91                 :            : static void
      92                 :        105 : ut_accel_ch_destroy_cb(void *io_device, void *ctx)
      93                 :            : {
      94                 :        105 : }
      95                 :            : 
      96                 :            : static int
      97                 :          3 : ut_bdev_setup(void)
      98                 :            : {
      99                 :          3 :         spdk_io_device_register(&g_accel_io_device, ut_accel_ch_create_cb,
     100                 :            :                                 ut_accel_ch_destroy_cb, 0, NULL);
     101                 :          3 :         return 0;
     102                 :            : }
     103                 :            : 
     104                 :            : static int
     105                 :          3 : ut_bdev_teardown(void)
     106                 :            : {
     107                 :          3 :         spdk_io_device_unregister(&g_accel_io_device, NULL);
     108                 :            : 
     109                 :          3 :         return 0;
     110                 :            : }
     111                 :            : 
     112                 :            : static int
     113                 :        240 : stub_destruct(void *ctx)
     114                 :            : {
     115                 :        240 :         return 0;
     116                 :            : }
     117                 :            : 
     118                 :            : struct ut_expected_io {
     119                 :            :         uint8_t                         type;
     120                 :            :         uint64_t                        offset;
     121                 :            :         uint64_t                        src_offset;
     122                 :            :         uint64_t                        length;
     123                 :            :         int                             iovcnt;
     124                 :            :         struct iovec                    iov[SPDK_BDEV_IO_NUM_CHILD_IOV];
     125                 :            :         void                            *md_buf;
     126                 :            :         TAILQ_ENTRY(ut_expected_io)     link;
     127                 :            : };
     128                 :            : 
     129                 :            : struct bdev_ut_channel {
     130                 :            :         TAILQ_HEAD(, spdk_bdev_io)      outstanding_io;
     131                 :            :         uint32_t                        outstanding_io_count;
     132                 :            :         TAILQ_HEAD(, ut_expected_io)    expected_io;
     133                 :            : };
     134                 :            : 
     135                 :            : static bool g_io_done;
     136                 :            : static struct spdk_bdev_io *g_bdev_io;
     137                 :            : static enum spdk_bdev_io_status g_io_status;
     138                 :            : static enum spdk_bdev_io_status g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
     139                 :            : static uint32_t g_bdev_ut_io_device;
     140                 :            : static struct bdev_ut_channel *g_bdev_ut_channel;
     141                 :            : static void *g_compare_read_buf;
     142                 :            : static uint32_t g_compare_read_buf_len;
     143                 :            : static void *g_compare_write_buf;
     144                 :            : static uint32_t g_compare_write_buf_len;
     145                 :            : static void *g_compare_md_buf;
     146                 :            : static bool g_abort_done;
     147                 :            : static enum spdk_bdev_io_status g_abort_status;
     148                 :            : static void *g_zcopy_read_buf;
     149                 :            : static uint32_t g_zcopy_read_buf_len;
     150                 :            : static void *g_zcopy_write_buf;
     151                 :            : static uint32_t g_zcopy_write_buf_len;
     152                 :            : static struct spdk_bdev_io *g_zcopy_bdev_io;
     153                 :            : static uint64_t g_seek_data_offset;
     154                 :            : static uint64_t g_seek_hole_offset;
     155                 :            : static uint64_t g_seek_offset;
     156                 :            : 
     157                 :            : static struct ut_expected_io *
     158                 :        771 : ut_alloc_expected_io(uint8_t type, uint64_t offset, uint64_t length, int iovcnt)
     159                 :            : {
     160                 :            :         struct ut_expected_io *expected_io;
     161                 :            : 
     162                 :        771 :         expected_io = calloc(1, sizeof(*expected_io));
     163         [ -  + ]:        771 :         SPDK_CU_ASSERT_FATAL(expected_io != NULL);
     164                 :            : 
     165                 :        771 :         expected_io->type = type;
     166                 :        771 :         expected_io->offset = offset;
     167                 :        771 :         expected_io->length = length;
     168                 :        771 :         expected_io->iovcnt = iovcnt;
     169                 :            : 
     170                 :        771 :         return expected_io;
     171                 :            : }
     172                 :            : 
     173                 :            : static struct ut_expected_io *
     174                 :         63 : ut_alloc_expected_copy_io(uint8_t type, uint64_t offset, uint64_t src_offset, uint64_t length)
     175                 :            : {
     176                 :            :         struct ut_expected_io *expected_io;
     177                 :            : 
     178                 :         63 :         expected_io = calloc(1, sizeof(*expected_io));
     179         [ -  + ]:         63 :         SPDK_CU_ASSERT_FATAL(expected_io != NULL);
     180                 :            : 
     181                 :         63 :         expected_io->type = type;
     182                 :         63 :         expected_io->offset = offset;
     183                 :         63 :         expected_io->src_offset = src_offset;
     184                 :         63 :         expected_io->length = length;
     185                 :            : 
     186                 :         63 :         return expected_io;
     187                 :            : }
     188                 :            : 
     189                 :            : static void
     190                 :       1638 : ut_expected_io_set_iov(struct ut_expected_io *expected_io, int pos, void *base, size_t len)
     191                 :            : {
     192                 :       1638 :         expected_io->iov[pos].iov_base = base;
     193                 :       1638 :         expected_io->iov[pos].iov_len = len;
     194                 :       1638 : }
     195                 :            : 
     196                 :            : static void
     197                 :       1197 : stub_submit_request(struct spdk_io_channel *_ch, struct spdk_bdev_io *bdev_io)
     198                 :            : {
     199                 :       1197 :         struct bdev_ut_channel *ch = spdk_io_channel_get_ctx(_ch);
     200                 :            :         struct ut_expected_io *expected_io;
     201                 :            :         struct iovec *iov, *expected_iov;
     202                 :            :         struct spdk_bdev_io *bio_to_abort;
     203                 :            :         int i;
     204                 :            : 
     205                 :       1197 :         g_bdev_io = bdev_io;
     206                 :            : 
     207   [ +  +  +  + ]:       1197 :         if (g_compare_read_buf && bdev_io->type == SPDK_BDEV_IO_TYPE_READ) {
     208                 :         33 :                 uint32_t len = bdev_io->u.bdev.iovs[0].iov_len;
     209                 :            : 
     210                 :         33 :                 CU_ASSERT(bdev_io->u.bdev.iovcnt == 1);
     211                 :         33 :                 CU_ASSERT(g_compare_read_buf_len == len);
     212   [ -  +  -  + ]:         33 :                 memcpy(bdev_io->u.bdev.iovs[0].iov_base, g_compare_read_buf, len);
     213   [ +  +  +  +  :         33 :                 if (bdev_io->bdev->md_len && bdev_io->u.bdev.md_buf && g_compare_md_buf) {
                   +  - ]
     214   [ -  +  -  + ]:          9 :                         memcpy(bdev_io->u.bdev.md_buf, g_compare_md_buf,
     215                 :          9 :                                bdev_io->bdev->md_len * bdev_io->u.bdev.num_blocks);
     216                 :            :                 }
     217                 :            :         }
     218                 :            : 
     219   [ +  +  +  + ]:       1197 :         if (g_compare_write_buf && bdev_io->type == SPDK_BDEV_IO_TYPE_WRITE) {
     220                 :          3 :                 uint32_t len = bdev_io->u.bdev.iovs[0].iov_len;
     221                 :            : 
     222                 :          3 :                 CU_ASSERT(bdev_io->u.bdev.iovcnt == 1);
     223                 :          3 :                 CU_ASSERT(g_compare_write_buf_len == len);
     224   [ -  +  -  + ]:          3 :                 memcpy(g_compare_write_buf, bdev_io->u.bdev.iovs[0].iov_base, len);
     225                 :            :         }
     226                 :            : 
     227   [ +  +  +  + ]:       1197 :         if (g_compare_read_buf && bdev_io->type == SPDK_BDEV_IO_TYPE_COMPARE) {
     228                 :         27 :                 uint32_t len = bdev_io->u.bdev.iovs[0].iov_len;
     229                 :            : 
     230                 :         27 :                 CU_ASSERT(bdev_io->u.bdev.iovcnt == 1);
     231                 :         27 :                 CU_ASSERT(g_compare_read_buf_len == len);
     232   [ +  +  -  +  :         27 :                 if (memcmp(bdev_io->u.bdev.iovs[0].iov_base, g_compare_read_buf, len)) {
                   +  + ]
     233                 :         12 :                         g_io_exp_status = SPDK_BDEV_IO_STATUS_MISCOMPARE;
     234                 :            :                 }
     235         [ +  + ]:         27 :                 if (bdev_io->u.bdev.md_buf &&
     236   [ -  +  -  +  :          9 :                     memcmp(bdev_io->u.bdev.md_buf, g_compare_md_buf,
                   +  + ]
     237         [ +  + ]:          9 :                            bdev_io->bdev->md_len * bdev_io->u.bdev.num_blocks)) {
     238                 :          3 :                         g_io_exp_status = SPDK_BDEV_IO_STATUS_MISCOMPARE;
     239                 :            :                 }
     240                 :            :         }
     241                 :            : 
     242         [ +  + ]:       1197 :         if (bdev_io->type == SPDK_BDEV_IO_TYPE_ABORT) {
     243         [ +  + ]:         24 :                 if (g_io_exp_status == SPDK_BDEV_IO_STATUS_SUCCESS) {
     244         [ +  - ]:         21 :                         TAILQ_FOREACH(bio_to_abort, &ch->outstanding_io, module_link) {
     245         [ +  - ]:         21 :                                 if (bio_to_abort == bdev_io->u.abort.bio_to_abort) {
     246         [ +  + ]:         21 :                                         TAILQ_REMOVE(&ch->outstanding_io, bio_to_abort, module_link);
     247                 :         21 :                                         ch->outstanding_io_count--;
     248                 :         21 :                                         spdk_bdev_io_complete(bio_to_abort, SPDK_BDEV_IO_STATUS_FAILED);
     249                 :         21 :                                         break;
     250                 :            :                                 }
     251                 :            :                         }
     252                 :            :                 }
     253                 :            :         }
     254                 :            : 
     255         [ +  + ]:       1197 :         if (bdev_io->type == SPDK_BDEV_IO_TYPE_ZCOPY) {
     256         [ +  + ]:         12 :                 if (bdev_io->u.bdev.zcopy.start) {
     257                 :          6 :                         g_zcopy_bdev_io = bdev_io;
     258         [ +  + ]:          6 :                         if (bdev_io->u.bdev.zcopy.populate) {
     259                 :            :                                 /* Start of a read */
     260                 :          3 :                                 CU_ASSERT(g_zcopy_read_buf != NULL);
     261                 :          3 :                                 CU_ASSERT(g_zcopy_read_buf_len > 0);
     262                 :          3 :                                 bdev_io->u.bdev.iovs[0].iov_base = g_zcopy_read_buf;
     263                 :          3 :                                 bdev_io->u.bdev.iovs[0].iov_len = g_zcopy_read_buf_len;
     264                 :          3 :                                 bdev_io->u.bdev.iovcnt = 1;
     265                 :            :                         } else {
     266                 :            :                                 /* Start of a write */
     267                 :          3 :                                 CU_ASSERT(g_zcopy_write_buf != NULL);
     268                 :          3 :                                 CU_ASSERT(g_zcopy_write_buf_len > 0);
     269                 :          3 :                                 bdev_io->u.bdev.iovs[0].iov_base = g_zcopy_write_buf;
     270                 :          3 :                                 bdev_io->u.bdev.iovs[0].iov_len = g_zcopy_write_buf_len;
     271                 :          3 :                                 bdev_io->u.bdev.iovcnt = 1;
     272                 :            :                         }
     273                 :            :                 } else {
     274         [ +  + ]:          6 :                         if (bdev_io->u.bdev.zcopy.commit) {
     275                 :            :                                 /* End of write */
     276                 :          3 :                                 CU_ASSERT(bdev_io->u.bdev.iovs[0].iov_base == g_zcopy_write_buf);
     277                 :          3 :                                 CU_ASSERT(bdev_io->u.bdev.iovs[0].iov_len == g_zcopy_write_buf_len);
     278                 :          3 :                                 CU_ASSERT(bdev_io->u.bdev.iovcnt == 1);
     279                 :          3 :                                 g_zcopy_write_buf = NULL;
     280                 :          3 :                                 g_zcopy_write_buf_len = 0;
     281                 :            :                         } else {
     282                 :            :                                 /* End of read */
     283                 :          3 :                                 CU_ASSERT(bdev_io->u.bdev.iovs[0].iov_base == g_zcopy_read_buf);
     284                 :          3 :                                 CU_ASSERT(bdev_io->u.bdev.iovs[0].iov_len == g_zcopy_read_buf_len);
     285                 :          3 :                                 CU_ASSERT(bdev_io->u.bdev.iovcnt == 1);
     286                 :          3 :                                 g_zcopy_read_buf = NULL;
     287                 :          3 :                                 g_zcopy_read_buf_len = 0;
     288                 :            :                         }
     289                 :            :                 }
     290                 :            :         }
     291                 :            : 
     292         [ +  + ]:       1197 :         if (bdev_io->type == SPDK_BDEV_IO_TYPE_SEEK_DATA) {
     293                 :          3 :                 bdev_io->u.bdev.seek.offset = g_seek_data_offset;
     294                 :            :         }
     295                 :            : 
     296         [ +  + ]:       1197 :         if (bdev_io->type == SPDK_BDEV_IO_TYPE_SEEK_HOLE) {
     297                 :          3 :                 bdev_io->u.bdev.seek.offset = g_seek_hole_offset;
     298                 :            :         }
     299                 :            : 
     300                 :       1197 :         TAILQ_INSERT_TAIL(&ch->outstanding_io, bdev_io, module_link);
     301                 :       1197 :         ch->outstanding_io_count++;
     302                 :            : 
     303                 :       1197 :         expected_io = TAILQ_FIRST(&ch->expected_io);
     304         [ +  + ]:       1197 :         if (expected_io == NULL) {
     305                 :        363 :                 return;
     306                 :            :         }
     307         [ +  + ]:        834 :         TAILQ_REMOVE(&ch->expected_io, expected_io, link);
     308                 :            : 
     309         [ +  - ]:        834 :         if (expected_io->type != SPDK_BDEV_IO_TYPE_INVALID) {
     310                 :        834 :                 CU_ASSERT(bdev_io->type == expected_io->type);
     311                 :            :         }
     312                 :            : 
     313         [ +  + ]:        834 :         if (expected_io->md_buf != NULL) {
     314                 :         84 :                 CU_ASSERT(expected_io->md_buf == bdev_io->u.bdev.md_buf);
     315                 :            :         }
     316                 :            : 
     317         [ -  + ]:        834 :         if (expected_io->length == 0) {
     318                 :          0 :                 free(expected_io);
     319                 :          0 :                 return;
     320                 :            :         }
     321                 :            : 
     322                 :        834 :         CU_ASSERT(expected_io->offset == bdev_io->u.bdev.offset_blocks);
     323                 :        834 :         CU_ASSERT(expected_io->length = bdev_io->u.bdev.num_blocks);
     324         [ +  + ]:        834 :         if (expected_io->type == SPDK_BDEV_IO_TYPE_COPY) {
     325                 :         63 :                 CU_ASSERT(expected_io->src_offset == bdev_io->u.bdev.copy.src_offset_blocks);
     326                 :            :         }
     327                 :            : 
     328         [ +  + ]:        834 :         if (expected_io->iovcnt == 0) {
     329                 :        303 :                 free(expected_io);
     330                 :            :                 /* UNMAP, WRITE_ZEROES, FLUSH and COPY don't have iovs, so we can just return now. */
     331                 :        303 :                 return;
     332                 :            :         }
     333                 :            : 
     334                 :        531 :         CU_ASSERT(expected_io->iovcnt == bdev_io->u.bdev.iovcnt);
     335         [ +  + ]:       2169 :         for (i = 0; i < expected_io->iovcnt; i++) {
     336                 :       1638 :                 expected_iov = &expected_io->iov[i];
     337         [ +  + ]:       1638 :                 if (bdev_io->internal.orig_iovcnt == 0) {
     338                 :       1626 :                         iov = &bdev_io->u.bdev.iovs[i];
     339                 :            :                 } else {
     340                 :         12 :                         iov = bdev_io->internal.orig_iovs;
     341                 :            :                 }
     342                 :       1638 :                 CU_ASSERT(iov->iov_len == expected_iov->iov_len);
     343                 :       1638 :                 CU_ASSERT(iov->iov_base == expected_iov->iov_base);
     344                 :            :         }
     345                 :            : 
     346                 :        531 :         free(expected_io);
     347                 :            : }
     348                 :            : 
     349                 :            : static void
     350                 :        177 : stub_submit_request_get_buf_cb(struct spdk_io_channel *_ch,
     351                 :            :                                struct spdk_bdev_io *bdev_io, bool success)
     352                 :            : {
     353                 :        177 :         CU_ASSERT(success == true);
     354                 :            : 
     355                 :        177 :         stub_submit_request(_ch, bdev_io);
     356                 :        177 : }
     357                 :            : 
     358                 :            : static void
     359                 :        177 : stub_submit_request_get_buf(struct spdk_io_channel *_ch, struct spdk_bdev_io *bdev_io)
     360                 :            : {
     361                 :        177 :         spdk_bdev_io_get_buf(bdev_io, stub_submit_request_get_buf_cb,
     362                 :        177 :                              bdev_io->u.bdev.num_blocks * bdev_io->bdev->blocklen);
     363                 :        177 : }
     364                 :            : 
     365                 :            : static uint32_t
     366                 :        516 : stub_complete_io(uint32_t num_to_complete)
     367                 :            : {
     368                 :        516 :         struct bdev_ut_channel *ch = g_bdev_ut_channel;
     369                 :            :         struct spdk_bdev_io *bdev_io;
     370                 :            :         static enum spdk_bdev_io_status io_status;
     371                 :        516 :         uint32_t num_completed = 0;
     372                 :            : 
     373         [ +  + ]:       1689 :         while (num_completed < num_to_complete) {
     374         [ +  + ]:       1182 :                 if (TAILQ_EMPTY(&ch->outstanding_io)) {
     375                 :          9 :                         break;
     376                 :            :                 }
     377                 :       1173 :                 bdev_io = TAILQ_FIRST(&ch->outstanding_io);
     378         [ +  + ]:       1173 :                 TAILQ_REMOVE(&ch->outstanding_io, bdev_io, module_link);
     379                 :       1173 :                 ch->outstanding_io_count--;
     380                 :       1173 :                 io_status = g_io_exp_status == SPDK_BDEV_IO_STATUS_SUCCESS ? SPDK_BDEV_IO_STATUS_SUCCESS :
     381                 :            :                             g_io_exp_status;
     382                 :       1173 :                 spdk_bdev_io_complete(bdev_io, io_status);
     383                 :       1173 :                 num_completed++;
     384                 :            :         }
     385                 :            : 
     386                 :        516 :         return num_completed;
     387                 :            : }
     388                 :            : 
     389                 :            : static struct spdk_io_channel *
     390                 :        105 : bdev_ut_get_io_channel(void *ctx)
     391                 :            : {
     392                 :        105 :         return spdk_get_io_channel(&g_bdev_ut_io_device);
     393                 :            : }
     394                 :            : 
     395                 :            : static bool g_io_types_supported[SPDK_BDEV_NUM_IO_TYPES] = {
     396                 :            :         [SPDK_BDEV_IO_TYPE_READ]                = true,
     397                 :            :         [SPDK_BDEV_IO_TYPE_WRITE]               = true,
     398                 :            :         [SPDK_BDEV_IO_TYPE_COMPARE]             = true,
     399                 :            :         [SPDK_BDEV_IO_TYPE_UNMAP]               = true,
     400                 :            :         [SPDK_BDEV_IO_TYPE_FLUSH]               = true,
     401                 :            :         [SPDK_BDEV_IO_TYPE_RESET]               = true,
     402                 :            :         [SPDK_BDEV_IO_TYPE_NVME_ADMIN]          = true,
     403                 :            :         [SPDK_BDEV_IO_TYPE_NVME_IO]             = true,
     404                 :            :         [SPDK_BDEV_IO_TYPE_NVME_IO_MD]          = true,
     405                 :            :         [SPDK_BDEV_IO_TYPE_WRITE_ZEROES]        = true,
     406                 :            :         [SPDK_BDEV_IO_TYPE_ZCOPY]               = true,
     407                 :            :         [SPDK_BDEV_IO_TYPE_ABORT]               = true,
     408                 :            :         [SPDK_BDEV_IO_TYPE_SEEK_HOLE]           = true,
     409                 :            :         [SPDK_BDEV_IO_TYPE_SEEK_DATA]           = true,
     410                 :            :         [SPDK_BDEV_IO_TYPE_COPY]                = true,
     411                 :            : };
     412                 :            : 
     413                 :            : static void
     414                 :         66 : ut_enable_io_type(enum spdk_bdev_io_type io_type, bool enable)
     415                 :            : {
     416                 :         66 :         g_io_types_supported[io_type] = enable;
     417                 :         66 : }
     418                 :            : 
     419                 :            : static bool
     420                 :        900 : stub_io_type_supported(void *_bdev, enum spdk_bdev_io_type io_type)
     421                 :            : {
     422         [ -  + ]:        900 :         return g_io_types_supported[io_type];
     423                 :            : }
     424                 :            : 
     425                 :            : static struct spdk_bdev_fn_table fn_table = {
     426                 :            :         .destruct = stub_destruct,
     427                 :            :         .submit_request = stub_submit_request,
     428                 :            :         .get_io_channel = bdev_ut_get_io_channel,
     429                 :            :         .io_type_supported = stub_io_type_supported,
     430                 :            : };
     431                 :            : 
     432                 :            : static int
     433                 :        105 : bdev_ut_create_ch(void *io_device, void *ctx_buf)
     434                 :            : {
     435                 :        105 :         struct bdev_ut_channel *ch = ctx_buf;
     436                 :            : 
     437                 :        105 :         CU_ASSERT(g_bdev_ut_channel == NULL);
     438                 :        105 :         g_bdev_ut_channel = ch;
     439                 :            : 
     440                 :        105 :         TAILQ_INIT(&ch->outstanding_io);
     441                 :        105 :         ch->outstanding_io_count = 0;
     442                 :        105 :         TAILQ_INIT(&ch->expected_io);
     443                 :        105 :         return 0;
     444                 :            : }
     445                 :            : 
     446                 :            : static void
     447                 :        105 : bdev_ut_destroy_ch(void *io_device, void *ctx_buf)
     448                 :            : {
     449                 :        105 :         CU_ASSERT(g_bdev_ut_channel != NULL);
     450                 :        105 :         g_bdev_ut_channel = NULL;
     451                 :        105 : }
     452                 :            : 
     453                 :            : struct spdk_bdev_module bdev_ut_if;
     454                 :            : 
     455                 :            : static int
     456                 :        120 : bdev_ut_module_init(void)
     457                 :            : {
     458                 :        120 :         spdk_io_device_register(&g_bdev_ut_io_device, bdev_ut_create_ch, bdev_ut_destroy_ch,
     459                 :            :                                 sizeof(struct bdev_ut_channel), NULL);
     460                 :        120 :         spdk_bdev_module_init_done(&bdev_ut_if);
     461                 :        120 :         return 0;
     462                 :            : }
     463                 :            : 
     464                 :            : static void
     465                 :        120 : bdev_ut_module_fini(void)
     466                 :            : {
     467                 :        120 :         spdk_io_device_unregister(&g_bdev_ut_io_device, NULL);
     468                 :        120 : }
     469                 :            : 
     470                 :            : struct spdk_bdev_module bdev_ut_if = {
     471                 :            :         .name = "bdev_ut",
     472                 :            :         .module_init = bdev_ut_module_init,
     473                 :            :         .module_fini = bdev_ut_module_fini,
     474                 :            :         .async_init = true,
     475                 :            : };
     476                 :            : 
     477                 :            : static void vbdev_ut_examine_config(struct spdk_bdev *bdev);
     478                 :            : static void vbdev_ut_examine_disk(struct spdk_bdev *bdev);
     479                 :            : 
     480                 :            : static int
     481                 :        120 : vbdev_ut_module_init(void)
     482                 :            : {
     483                 :        120 :         return 0;
     484                 :            : }
     485                 :            : 
     486                 :            : static void
     487                 :        360 : vbdev_ut_module_fini(void)
     488                 :            : {
     489                 :        360 : }
     490                 :            : 
     491                 :            : struct spdk_bdev_module vbdev_ut_if = {
     492                 :            :         .name = "vbdev_ut",
     493                 :            :         .module_init = vbdev_ut_module_init,
     494                 :            :         .module_fini = vbdev_ut_module_fini,
     495                 :            :         .examine_config = vbdev_ut_examine_config,
     496                 :            :         .examine_disk = vbdev_ut_examine_disk,
     497                 :            : };
     498                 :            : 
     499                 :          3 : SPDK_BDEV_MODULE_REGISTER(bdev_ut, &bdev_ut_if)
     500                 :          3 : SPDK_BDEV_MODULE_REGISTER(vbdev_ut, &vbdev_ut_if)
     501                 :            : 
     502                 :            : struct ut_examine_ctx {
     503                 :            :         void (*examine_config)(struct spdk_bdev *bdev);
     504                 :            :         void (*examine_disk)(struct spdk_bdev *bdev);
     505                 :            :         uint32_t examine_config_count;
     506                 :            :         uint32_t examine_disk_count;
     507                 :            : };
     508                 :            : 
     509                 :            : static void
     510                 :        240 : vbdev_ut_examine_config(struct spdk_bdev *bdev)
     511                 :            : {
     512                 :        240 :         struct ut_examine_ctx *ctx = bdev->ctxt;
     513                 :            : 
     514         [ +  + ]:        240 :         if (ctx != NULL) {
     515                 :          9 :                 ctx->examine_config_count++;
     516         [ +  - ]:          9 :                 if (ctx->examine_config != NULL) {
     517                 :          9 :                         ctx->examine_config(bdev);
     518                 :            :                 }
     519                 :            :         }
     520                 :            : 
     521                 :        240 :         spdk_bdev_module_examine_done(&vbdev_ut_if);
     522                 :        240 : }
     523                 :            : 
     524                 :            : static void
     525                 :        231 : vbdev_ut_examine_disk(struct spdk_bdev *bdev)
     526                 :            : {
     527                 :        231 :         struct ut_examine_ctx *ctx = bdev->ctxt;
     528                 :            : 
     529         [ +  + ]:        231 :         if (ctx != NULL) {
     530                 :          9 :                 ctx->examine_disk_count++;
     531         [ +  - ]:          9 :                 if (ctx->examine_disk != NULL) {
     532                 :          9 :                         ctx->examine_disk(bdev);
     533                 :            :                 }
     534                 :            :         }
     535                 :            : 
     536                 :        231 :         spdk_bdev_module_examine_done(&vbdev_ut_if);
     537                 :        231 : }
     538                 :            : 
     539                 :            : static void
     540                 :        120 : bdev_init_cb(void *arg, int rc)
     541                 :            : {
     542                 :        120 :         CU_ASSERT(rc == 0);
     543                 :        120 : }
     544                 :            : 
     545                 :            : static void
     546                 :        240 : bdev_fini_cb(void *arg)
     547                 :            : {
     548                 :        240 : }
     549                 :            : 
     550                 :            : static void
     551                 :        120 : ut_init_bdev(struct spdk_bdev_opts *opts)
     552                 :            : {
     553                 :            :         int rc;
     554                 :            : 
     555         [ +  + ]:        120 :         if (opts != NULL) {
     556                 :         36 :                 rc = spdk_bdev_set_opts(opts);
     557                 :         36 :                 CU_ASSERT(rc == 0);
     558                 :            :         }
     559                 :        120 :         rc = spdk_iobuf_initialize();
     560                 :        120 :         CU_ASSERT(rc == 0);
     561                 :        120 :         spdk_bdev_initialize(bdev_init_cb, NULL);
     562                 :        120 :         poll_threads();
     563                 :        120 : }
     564                 :            : 
     565                 :            : static void
     566                 :        120 : ut_fini_bdev(void)
     567                 :            : {
     568                 :        120 :         spdk_bdev_finish(bdev_fini_cb, NULL);
     569                 :        120 :         spdk_iobuf_finish(bdev_fini_cb, NULL);
     570                 :        120 :         poll_threads();
     571                 :        120 : }
     572                 :            : 
     573                 :            : static struct spdk_bdev *
     574                 :        216 : allocate_bdev_ctx(char *name, void *ctx)
     575                 :            : {
     576                 :            :         struct spdk_bdev *bdev;
     577                 :            :         int rc;
     578                 :            : 
     579                 :        216 :         bdev = calloc(1, sizeof(*bdev));
     580         [ -  + ]:        216 :         SPDK_CU_ASSERT_FATAL(bdev != NULL);
     581                 :            : 
     582                 :        216 :         bdev->ctxt = ctx;
     583                 :        216 :         bdev->name = name;
     584                 :        216 :         bdev->fn_table = &fn_table;
     585                 :        216 :         bdev->module = &bdev_ut_if;
     586                 :        216 :         bdev->blockcnt = 1024;
     587                 :        216 :         bdev->blocklen = 512;
     588                 :            : 
     589                 :        216 :         spdk_uuid_generate(&bdev->uuid);
     590                 :            : 
     591                 :        216 :         rc = spdk_bdev_register(bdev);
     592                 :        216 :         poll_threads();
     593                 :        216 :         CU_ASSERT(rc == 0);
     594                 :            : 
     595                 :        216 :         return bdev;
     596                 :            : }
     597                 :            : 
     598                 :            : static struct spdk_bdev *
     599                 :        207 : allocate_bdev(char *name)
     600                 :            : {
     601                 :        207 :         return allocate_bdev_ctx(name, NULL);
     602                 :            : }
     603                 :            : 
     604                 :            : static struct spdk_bdev *
     605                 :         15 : allocate_vbdev(char *name)
     606                 :            : {
     607                 :            :         struct spdk_bdev *bdev;
     608                 :            :         int rc;
     609                 :            : 
     610                 :         15 :         bdev = calloc(1, sizeof(*bdev));
     611         [ -  + ]:         15 :         SPDK_CU_ASSERT_FATAL(bdev != NULL);
     612                 :            : 
     613                 :         15 :         bdev->name = name;
     614                 :         15 :         bdev->fn_table = &fn_table;
     615                 :         15 :         bdev->module = &vbdev_ut_if;
     616                 :         15 :         bdev->blockcnt = 1024;
     617                 :         15 :         bdev->blocklen = 512;
     618                 :            : 
     619                 :         15 :         rc = spdk_bdev_register(bdev);
     620                 :         15 :         poll_threads();
     621                 :         15 :         CU_ASSERT(rc == 0);
     622                 :            : 
     623                 :         15 :         return bdev;
     624                 :            : }
     625                 :            : 
     626                 :            : static void
     627                 :        207 : free_bdev(struct spdk_bdev *bdev)
     628                 :            : {
     629                 :        207 :         spdk_bdev_unregister(bdev, NULL, NULL);
     630                 :        207 :         poll_threads();
     631         [ -  + ]:        207 :         memset(bdev, 0xFF, sizeof(*bdev));
     632                 :        207 :         free(bdev);
     633                 :        207 : }
     634                 :            : 
     635                 :            : static void
     636                 :         15 : free_vbdev(struct spdk_bdev *bdev)
     637                 :            : {
     638                 :         15 :         spdk_bdev_unregister(bdev, NULL, NULL);
     639                 :         15 :         poll_threads();
     640         [ -  + ]:         15 :         memset(bdev, 0xFF, sizeof(*bdev));
     641                 :         15 :         free(bdev);
     642                 :         15 : }
     643                 :            : 
     644                 :            : static void
     645                 :          3 : get_device_stat_cb(struct spdk_bdev *bdev, struct spdk_bdev_io_stat *stat, void *cb_arg, int rc)
     646                 :            : {
     647                 :            :         const char *bdev_name;
     648                 :            : 
     649                 :          3 :         CU_ASSERT(bdev != NULL);
     650                 :          3 :         CU_ASSERT(rc == 0);
     651                 :          3 :         bdev_name = spdk_bdev_get_name(bdev);
     652         [ -  + ]:          3 :         CU_ASSERT_STRING_EQUAL(bdev_name, "bdev0");
     653                 :            : 
     654                 :          3 :         free(stat);
     655                 :            : 
     656                 :          3 :         *(bool *)cb_arg = true;
     657                 :          3 : }
     658                 :            : 
     659                 :            : static void
     660                 :          9 : bdev_unregister_cb(void *cb_arg, int rc)
     661                 :            : {
     662                 :          9 :         g_unregister_arg = cb_arg;
     663                 :          9 :         g_unregister_rc = rc;
     664                 :          9 : }
     665                 :            : 
     666                 :            : static void
     667                 :          3 : bdev_ut_event_cb(enum spdk_bdev_event_type type, struct spdk_bdev *bdev, void *event_ctx)
     668                 :            : {
     669                 :          3 : }
     670                 :            : 
     671                 :            : static void
     672                 :         12 : bdev_open_cb1(enum spdk_bdev_event_type type, struct spdk_bdev *bdev, void *event_ctx)
     673                 :            : {
     674                 :         12 :         struct spdk_bdev_desc *desc = *(struct spdk_bdev_desc **)event_ctx;
     675                 :            : 
     676                 :         12 :         g_event_type1 = type;
     677         [ +  + ]:         12 :         if (SPDK_BDEV_EVENT_REMOVE == type) {
     678                 :          6 :                 spdk_bdev_close(desc);
     679                 :            :         }
     680                 :         12 : }
     681                 :            : 
     682                 :            : static void
     683                 :          6 : bdev_open_cb2(enum spdk_bdev_event_type type, struct spdk_bdev *bdev, void *event_ctx)
     684                 :            : {
     685                 :          6 :         struct spdk_bdev_desc *desc = *(struct spdk_bdev_desc **)event_ctx;
     686                 :            : 
     687                 :          6 :         g_event_type2 = type;
     688         [ +  - ]:          6 :         if (SPDK_BDEV_EVENT_REMOVE == type) {
     689                 :          6 :                 spdk_bdev_close(desc);
     690                 :            :         }
     691                 :          6 : }
     692                 :            : 
     693                 :            : static void
     694                 :          3 : bdev_open_cb3(enum spdk_bdev_event_type type, struct spdk_bdev *bdev, void *event_ctx)
     695                 :            : {
     696                 :          3 :         g_event_type3 = type;
     697                 :          3 : }
     698                 :            : 
     699                 :            : static void
     700                 :          3 : bdev_open_cb4(enum spdk_bdev_event_type type, struct spdk_bdev *bdev, void *event_ctx)
     701                 :            : {
     702                 :          3 :         g_event_type4 = type;
     703                 :          3 : }
     704                 :            : 
     705                 :            : static void
     706                 :         12 : bdev_seek_cb(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg)
     707                 :            : {
     708                 :         12 :         g_seek_offset = spdk_bdev_io_get_seek_offset(bdev_io);
     709                 :         12 :         spdk_bdev_free_io(bdev_io);
     710                 :         12 : }
     711                 :            : 
     712                 :            : static void
     713                 :          3 : get_device_stat_test(void)
     714                 :            : {
     715                 :            :         struct spdk_bdev *bdev;
     716                 :            :         struct spdk_bdev_io_stat *stat;
     717                 :          3 :         bool done;
     718                 :            : 
     719                 :          3 :         bdev = allocate_bdev("bdev0");
     720                 :          3 :         stat = calloc(1, sizeof(struct spdk_bdev_io_stat));
     721         [ -  + ]:          3 :         if (stat == NULL) {
     722                 :          0 :                 free_bdev(bdev);
     723                 :          0 :                 return;
     724                 :            :         }
     725                 :            : 
     726                 :          3 :         done = false;
     727                 :          3 :         spdk_bdev_get_device_stat(bdev, stat, get_device_stat_cb, &done);
     728   [ +  +  +  + ]:          6 :         while (!done) { poll_threads(); }
     729                 :            : 
     730                 :          3 :         free_bdev(bdev);
     731                 :            : }
     732                 :            : 
     733                 :            : static void
     734                 :          3 : open_write_test(void)
     735                 :            : {
     736                 :            :         struct spdk_bdev *bdev[9];
     737                 :          3 :         struct spdk_bdev_desc *desc[9] = {};
     738                 :            :         int rc;
     739                 :            : 
     740                 :          3 :         ut_init_bdev(NULL);
     741                 :            : 
     742                 :            :         /*
     743                 :            :          * Create a tree of bdevs to test various open w/ write cases.
     744                 :            :          *
     745                 :            :          * bdev0 through bdev3 are physical block devices, such as NVMe
     746                 :            :          * namespaces or Ceph block devices.
     747                 :            :          *
     748                 :            :          * bdev4 is a virtual bdev with multiple base bdevs.  This models
     749                 :            :          * caching or RAID use cases.
     750                 :            :          *
     751                 :            :          * bdev5 through bdev7 are all virtual bdevs with the same base
     752                 :            :          * bdev (except bdev7). This models partitioning or logical volume
     753                 :            :          * use cases.
     754                 :            :          *
     755                 :            :          * bdev7 is a virtual bdev with multiple base bdevs. One of base bdevs
     756                 :            :          * (bdev2) is shared with other virtual bdevs: bdev5 and bdev6. This
     757                 :            :          * models caching, RAID, partitioning or logical volumes use cases.
     758                 :            :          *
     759                 :            :          * bdev8 is a virtual bdev with multiple base bdevs, but these
     760                 :            :          * base bdevs are themselves virtual bdevs.
     761                 :            :          *
     762                 :            :          *                bdev8
     763                 :            :          *                  |
     764                 :            :          *            +----------+
     765                 :            :          *            |          |
     766                 :            :          *          bdev4      bdev5   bdev6   bdev7
     767                 :            :          *            |          |       |       |
     768                 :            :          *        +---+---+      +---+   +   +---+---+
     769                 :            :          *        |       |           \  |  /         \
     770                 :            :          *      bdev0   bdev1          bdev2         bdev3
     771                 :            :          */
     772                 :            : 
     773                 :          3 :         bdev[0] = allocate_bdev("bdev0");
     774                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev[0], NULL, &bdev_ut_if);
     775                 :          3 :         CU_ASSERT(rc == 0);
     776                 :            : 
     777                 :          3 :         bdev[1] = allocate_bdev("bdev1");
     778                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev[1], NULL, &bdev_ut_if);
     779                 :          3 :         CU_ASSERT(rc == 0);
     780                 :            : 
     781                 :          3 :         bdev[2] = allocate_bdev("bdev2");
     782                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev[2], NULL, &bdev_ut_if);
     783                 :          3 :         CU_ASSERT(rc == 0);
     784                 :            : 
     785                 :          3 :         bdev[3] = allocate_bdev("bdev3");
     786                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev[3], NULL, &bdev_ut_if);
     787                 :          3 :         CU_ASSERT(rc == 0);
     788                 :            : 
     789                 :          3 :         bdev[4] = allocate_vbdev("bdev4");
     790                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev[4], NULL, &bdev_ut_if);
     791                 :          3 :         CU_ASSERT(rc == 0);
     792                 :            : 
     793                 :          3 :         bdev[5] = allocate_vbdev("bdev5");
     794                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev[5], NULL, &bdev_ut_if);
     795                 :          3 :         CU_ASSERT(rc == 0);
     796                 :            : 
     797                 :          3 :         bdev[6] = allocate_vbdev("bdev6");
     798                 :            : 
     799                 :          3 :         bdev[7] = allocate_vbdev("bdev7");
     800                 :            : 
     801                 :          3 :         bdev[8] = allocate_vbdev("bdev8");
     802                 :            : 
     803                 :            :         /* Open bdev0 read-only.  This should succeed. */
     804                 :          3 :         rc = spdk_bdev_open_ext("bdev0", false, bdev_ut_event_cb, NULL, &desc[0]);
     805                 :          3 :         CU_ASSERT(rc == 0);
     806         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc[0] != NULL);
     807                 :          3 :         CU_ASSERT(bdev[0] == spdk_bdev_desc_get_bdev(desc[0]));
     808                 :          3 :         spdk_bdev_close(desc[0]);
     809                 :            : 
     810                 :            :         /*
     811                 :            :          * Open bdev1 read/write.  This should fail since bdev1 has been claimed
     812                 :            :          * by a vbdev module.
     813                 :            :          */
     814                 :          3 :         rc = spdk_bdev_open_ext("bdev1", true, bdev_ut_event_cb, NULL, &desc[1]);
     815                 :          3 :         CU_ASSERT(rc == -EPERM);
     816                 :            : 
     817                 :            :         /*
     818                 :            :          * Open bdev4 read/write.  This should fail since bdev3 has been claimed
     819                 :            :          * by a vbdev module.
     820                 :            :          */
     821                 :          3 :         rc = spdk_bdev_open_ext("bdev4", true, bdev_ut_event_cb, NULL, &desc[4]);
     822                 :          3 :         CU_ASSERT(rc == -EPERM);
     823                 :            : 
     824                 :            :         /* Open bdev4 read-only.  This should succeed. */
     825                 :          3 :         rc = spdk_bdev_open_ext("bdev4", false, bdev_ut_event_cb, NULL, &desc[4]);
     826                 :          3 :         CU_ASSERT(rc == 0);
     827         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc[4] != NULL);
     828                 :          3 :         CU_ASSERT(bdev[4] == spdk_bdev_desc_get_bdev(desc[4]));
     829                 :          3 :         spdk_bdev_close(desc[4]);
     830                 :            : 
     831                 :            :         /*
     832                 :            :          * Open bdev8 read/write.  This should succeed since it is a leaf
     833                 :            :          * bdev.
     834                 :            :          */
     835                 :          3 :         rc = spdk_bdev_open_ext("bdev8", true, bdev_ut_event_cb, NULL, &desc[8]);
     836                 :          3 :         CU_ASSERT(rc == 0);
     837         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc[8] != NULL);
     838                 :          3 :         CU_ASSERT(bdev[8] == spdk_bdev_desc_get_bdev(desc[8]));
     839                 :          3 :         spdk_bdev_close(desc[8]);
     840                 :            : 
     841                 :            :         /*
     842                 :            :          * Open bdev5 read/write.  This should fail since bdev4 has been claimed
     843                 :            :          * by a vbdev module.
     844                 :            :          */
     845                 :          3 :         rc = spdk_bdev_open_ext("bdev5", true, bdev_ut_event_cb, NULL, &desc[5]);
     846                 :          3 :         CU_ASSERT(rc == -EPERM);
     847                 :            : 
     848                 :            :         /* Open bdev4 read-only.  This should succeed. */
     849                 :          3 :         rc = spdk_bdev_open_ext("bdev5", false, bdev_ut_event_cb, NULL, &desc[5]);
     850                 :          3 :         CU_ASSERT(rc == 0);
     851         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc[5] != NULL);
     852                 :          3 :         CU_ASSERT(bdev[5] == spdk_bdev_desc_get_bdev(desc[5]));
     853                 :          3 :         spdk_bdev_close(desc[5]);
     854                 :            : 
     855                 :          3 :         free_vbdev(bdev[8]);
     856                 :            : 
     857                 :          3 :         free_vbdev(bdev[5]);
     858                 :          3 :         free_vbdev(bdev[6]);
     859                 :          3 :         free_vbdev(bdev[7]);
     860                 :            : 
     861                 :          3 :         free_vbdev(bdev[4]);
     862                 :            : 
     863                 :          3 :         free_bdev(bdev[0]);
     864                 :          3 :         free_bdev(bdev[1]);
     865                 :          3 :         free_bdev(bdev[2]);
     866                 :          3 :         free_bdev(bdev[3]);
     867                 :            : 
     868                 :          3 :         ut_fini_bdev();
     869                 :          3 : }
     870                 :            : 
     871                 :            : static void
     872                 :          3 : claim_test(void)
     873                 :            : {
     874                 :            :         struct spdk_bdev *bdev;
     875                 :          3 :         struct spdk_bdev_desc *desc, *open_desc;
     876                 :            :         int rc;
     877                 :            :         uint32_t count;
     878                 :            : 
     879                 :          3 :         ut_init_bdev(NULL);
     880                 :            : 
     881                 :            :         /*
     882                 :            :          * A vbdev that uses a read-only bdev may need it to remain read-only.
     883                 :            :          * To do so, it opens the bdev read-only, then claims it without
     884                 :            :          * passing a spdk_bdev_desc.
     885                 :            :          */
     886                 :          3 :         bdev = allocate_bdev("bdev0");
     887                 :          3 :         rc = spdk_bdev_open_ext("bdev0", false, bdev_ut_event_cb, NULL, &desc);
     888                 :          3 :         CU_ASSERT(rc == 0);
     889         [ -  + ]:          3 :         CU_ASSERT(desc->write == false);
     890                 :            : 
     891                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev, NULL, &bdev_ut_if);
     892                 :          3 :         CU_ASSERT(rc == 0);
     893                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_EXCL_WRITE);
     894                 :          3 :         CU_ASSERT(bdev->internal.claim.v1.module == &bdev_ut_if);
     895                 :            : 
     896                 :            :         /* There should be only one open descriptor and it should still be ro */
     897                 :          3 :         count = 0;
     898         [ +  + ]:          6 :         TAILQ_FOREACH(open_desc, &bdev->internal.open_descs, link) {
     899                 :          3 :                 CU_ASSERT(open_desc == desc);
     900         [ -  + ]:          3 :                 CU_ASSERT(!open_desc->write);
     901                 :          3 :                 count++;
     902                 :            :         }
     903                 :          3 :         CU_ASSERT(count == 1);
     904                 :            : 
     905                 :            :         /* A read-only bdev is upgraded to read-write if desc is passed. */
     906                 :          3 :         spdk_bdev_module_release_bdev(bdev);
     907                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev, desc, &bdev_ut_if);
     908                 :          3 :         CU_ASSERT(rc == 0);
     909                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_EXCL_WRITE);
     910                 :          3 :         CU_ASSERT(bdev->internal.claim.v1.module == &bdev_ut_if);
     911                 :            : 
     912                 :            :         /* There should be only one open descriptor and it should be rw */
     913                 :          3 :         count = 0;
     914         [ +  + ]:          6 :         TAILQ_FOREACH(open_desc, &bdev->internal.open_descs, link) {
     915                 :          3 :                 CU_ASSERT(open_desc == desc);
     916         [ -  + ]:          3 :                 CU_ASSERT(open_desc->write);
     917                 :          3 :                 count++;
     918                 :            :         }
     919                 :          3 :         CU_ASSERT(count == 1);
     920                 :            : 
     921                 :          3 :         spdk_bdev_close(desc);
     922                 :          3 :         free_bdev(bdev);
     923                 :          3 :         ut_fini_bdev();
     924                 :          3 : }
     925                 :            : 
     926                 :            : static void
     927                 :          3 : bytes_to_blocks_test(void)
     928                 :            : {
     929                 :          3 :         struct spdk_bdev bdev;
     930                 :          3 :         uint64_t offset_blocks, num_blocks;
     931                 :            : 
     932         [ -  + ]:          3 :         memset(&bdev, 0, sizeof(bdev));
     933                 :            : 
     934                 :          3 :         bdev.blocklen = 512;
     935                 :            : 
     936                 :            :         /* All parameters valid */
     937                 :          3 :         offset_blocks = 0;
     938                 :          3 :         num_blocks = 0;
     939                 :          3 :         CU_ASSERT(bdev_bytes_to_blocks(&bdev, 512, &offset_blocks, 1024, &num_blocks) == 0);
     940                 :          3 :         CU_ASSERT(offset_blocks == 1);
     941                 :          3 :         CU_ASSERT(num_blocks == 2);
     942                 :            : 
     943                 :            :         /* Offset not a block multiple */
     944                 :          3 :         CU_ASSERT(bdev_bytes_to_blocks(&bdev, 3, &offset_blocks, 512, &num_blocks) != 0);
     945                 :            : 
     946                 :            :         /* Length not a block multiple */
     947                 :          3 :         CU_ASSERT(bdev_bytes_to_blocks(&bdev, 512, &offset_blocks, 3, &num_blocks) != 0);
     948                 :            : 
     949                 :            :         /* In case blocklen not the power of two */
     950                 :          3 :         bdev.blocklen = 100;
     951                 :          3 :         CU_ASSERT(bdev_bytes_to_blocks(&bdev, 100, &offset_blocks, 200, &num_blocks) == 0);
     952                 :          3 :         CU_ASSERT(offset_blocks == 1);
     953                 :          3 :         CU_ASSERT(num_blocks == 2);
     954                 :            : 
     955                 :            :         /* Offset not a block multiple */
     956                 :          3 :         CU_ASSERT(bdev_bytes_to_blocks(&bdev, 3, &offset_blocks, 100, &num_blocks) != 0);
     957                 :            : 
     958                 :            :         /* Length not a block multiple */
     959                 :          3 :         CU_ASSERT(bdev_bytes_to_blocks(&bdev, 100, &offset_blocks, 3, &num_blocks) != 0);
     960                 :          3 : }
     961                 :            : 
     962                 :            : static void
     963                 :          3 : num_blocks_test(void)
     964                 :            : {
     965                 :            :         struct spdk_bdev *bdev;
     966                 :          3 :         struct spdk_bdev_desc *desc = NULL;
     967                 :            :         int rc;
     968                 :            : 
     969                 :          3 :         ut_init_bdev(NULL);
     970                 :          3 :         bdev = allocate_bdev("num_blocks");
     971                 :            : 
     972                 :          3 :         spdk_bdev_notify_blockcnt_change(bdev, 50);
     973                 :            : 
     974                 :            :         /* Growing block number */
     975                 :          3 :         CU_ASSERT(spdk_bdev_notify_blockcnt_change(bdev, 70) == 0);
     976                 :            :         /* Shrinking block number */
     977                 :          3 :         CU_ASSERT(spdk_bdev_notify_blockcnt_change(bdev, 30) == 0);
     978                 :            : 
     979                 :          3 :         rc = spdk_bdev_open_ext("num_blocks", false, bdev_open_cb1, &desc, &desc);
     980                 :          3 :         CU_ASSERT(rc == 0);
     981         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
     982                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
     983                 :            : 
     984                 :            :         /* Growing block number */
     985                 :          3 :         CU_ASSERT(spdk_bdev_notify_blockcnt_change(bdev, 80) == 0);
     986                 :            :         /* Shrinking block number */
     987                 :          3 :         CU_ASSERT(spdk_bdev_notify_blockcnt_change(bdev, 20) != 0);
     988                 :            : 
     989                 :          3 :         g_event_type1 = 0xFF;
     990                 :            :         /* Growing block number */
     991                 :          3 :         CU_ASSERT(spdk_bdev_notify_blockcnt_change(bdev, 90) == 0);
     992                 :            : 
     993                 :          3 :         poll_threads();
     994                 :          3 :         CU_ASSERT_EQUAL(g_event_type1, SPDK_BDEV_EVENT_RESIZE);
     995                 :            : 
     996                 :          3 :         g_event_type1 = 0xFF;
     997                 :            :         /* Growing block number and closing */
     998                 :          3 :         CU_ASSERT(spdk_bdev_notify_blockcnt_change(bdev, 100) == 0);
     999                 :            : 
    1000                 :          3 :         spdk_bdev_close(desc);
    1001                 :          3 :         free_bdev(bdev);
    1002                 :          3 :         ut_fini_bdev();
    1003                 :            : 
    1004                 :          3 :         poll_threads();
    1005                 :            : 
    1006                 :            :         /* Callback is not called for closed device */
    1007                 :          3 :         CU_ASSERT_EQUAL(g_event_type1, 0xFF);
    1008                 :          3 : }
    1009                 :            : 
    1010                 :            : static void
    1011                 :          3 : io_valid_test(void)
    1012                 :            : {
    1013                 :          3 :         struct spdk_bdev bdev;
    1014                 :            : 
    1015         [ -  + ]:          3 :         memset(&bdev, 0, sizeof(bdev));
    1016                 :            : 
    1017                 :          3 :         bdev.blocklen = 512;
    1018                 :          3 :         spdk_spin_init(&bdev.internal.spinlock);
    1019                 :            : 
    1020                 :          3 :         spdk_bdev_notify_blockcnt_change(&bdev, 100);
    1021                 :            : 
    1022                 :            :         /* All parameters valid */
    1023                 :          3 :         CU_ASSERT(bdev_io_valid_blocks(&bdev, 1, 2) == true);
    1024                 :            : 
    1025                 :            :         /* Last valid block */
    1026                 :          3 :         CU_ASSERT(bdev_io_valid_blocks(&bdev, 99, 1) == true);
    1027                 :            : 
    1028                 :            :         /* Offset past end of bdev */
    1029                 :          3 :         CU_ASSERT(bdev_io_valid_blocks(&bdev, 100, 1) == false);
    1030                 :            : 
    1031                 :            :         /* Offset + length past end of bdev */
    1032                 :          3 :         CU_ASSERT(bdev_io_valid_blocks(&bdev, 99, 2) == false);
    1033                 :            : 
    1034                 :            :         /* Offset near end of uint64_t range (2^64 - 1) */
    1035                 :          3 :         CU_ASSERT(bdev_io_valid_blocks(&bdev, 18446744073709551615ULL, 1) == false);
    1036                 :            : 
    1037                 :          3 :         spdk_spin_destroy(&bdev.internal.spinlock);
    1038                 :          3 : }
    1039                 :            : 
    1040                 :            : static void
    1041                 :          3 : alias_add_del_test(void)
    1042                 :            : {
    1043                 :            :         struct spdk_bdev *bdev[3];
    1044                 :            :         int rc;
    1045                 :            : 
    1046                 :          3 :         ut_init_bdev(NULL);
    1047                 :            : 
    1048                 :            :         /* Creating and registering bdevs */
    1049                 :          3 :         bdev[0] = allocate_bdev("bdev0");
    1050         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(bdev[0] != 0);
    1051                 :            : 
    1052                 :          3 :         bdev[1] = allocate_bdev("bdev1");
    1053         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(bdev[1] != 0);
    1054                 :            : 
    1055                 :          3 :         bdev[2] = allocate_bdev("bdev2");
    1056         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(bdev[2] != 0);
    1057                 :            : 
    1058                 :          3 :         poll_threads();
    1059                 :            : 
    1060                 :            :         /*
    1061                 :            :          * Trying adding an alias identical to name.
    1062                 :            :          * Alias is identical to name, so it can not be added to aliases list
    1063                 :            :          */
    1064                 :          3 :         rc = spdk_bdev_alias_add(bdev[0], bdev[0]->name);
    1065                 :          3 :         CU_ASSERT(rc == -EEXIST);
    1066                 :            : 
    1067                 :            :         /*
    1068                 :            :          * Trying to add empty alias,
    1069                 :            :          * this one should fail
    1070                 :            :          */
    1071                 :          3 :         rc = spdk_bdev_alias_add(bdev[0], NULL);
    1072                 :          3 :         CU_ASSERT(rc == -EINVAL);
    1073                 :            : 
    1074                 :            :         /* Trying adding same alias to two different registered bdevs */
    1075                 :            : 
    1076                 :            :         /* Alias is used first time, so this one should pass */
    1077                 :          3 :         rc = spdk_bdev_alias_add(bdev[0], "proper alias 0");
    1078                 :          3 :         CU_ASSERT(rc == 0);
    1079                 :            : 
    1080                 :            :         /* Alias was added to another bdev, so this one should fail */
    1081                 :          3 :         rc = spdk_bdev_alias_add(bdev[1], "proper alias 0");
    1082                 :          3 :         CU_ASSERT(rc == -EEXIST);
    1083                 :            : 
    1084                 :            :         /* Alias is used first time, so this one should pass */
    1085                 :          3 :         rc = spdk_bdev_alias_add(bdev[1], "proper alias 1");
    1086                 :          3 :         CU_ASSERT(rc == 0);
    1087                 :            : 
    1088                 :            :         /* Trying removing an alias from registered bdevs */
    1089                 :            : 
    1090                 :            :         /* Alias is not on a bdev aliases list, so this one should fail */
    1091                 :          3 :         rc = spdk_bdev_alias_del(bdev[0], "not existing");
    1092                 :          3 :         CU_ASSERT(rc == -ENOENT);
    1093                 :            : 
    1094                 :            :         /* Alias is present on a bdev aliases list, so this one should pass */
    1095                 :          3 :         rc = spdk_bdev_alias_del(bdev[0], "proper alias 0");
    1096                 :          3 :         CU_ASSERT(rc == 0);
    1097                 :            : 
    1098                 :            :         /* Alias is present on a bdev aliases list, so this one should pass */
    1099                 :          3 :         rc = spdk_bdev_alias_del(bdev[1], "proper alias 1");
    1100                 :          3 :         CU_ASSERT(rc == 0);
    1101                 :            : 
    1102                 :            :         /* Trying to remove name instead of alias, so this one should fail, name cannot be changed or removed */
    1103                 :          3 :         rc = spdk_bdev_alias_del(bdev[0], bdev[0]->name);
    1104                 :          3 :         CU_ASSERT(rc != 0);
    1105                 :            : 
    1106                 :            :         /* Trying to del all alias from empty alias list */
    1107                 :          3 :         spdk_bdev_alias_del_all(bdev[2]);
    1108         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(TAILQ_EMPTY(&bdev[2]->aliases));
    1109                 :            : 
    1110                 :            :         /* Trying to del all alias from non-empty alias list */
    1111                 :          3 :         rc = spdk_bdev_alias_add(bdev[2], "alias0");
    1112                 :          3 :         CU_ASSERT(rc == 0);
    1113                 :          3 :         rc = spdk_bdev_alias_add(bdev[2], "alias1");
    1114                 :          3 :         CU_ASSERT(rc == 0);
    1115                 :          3 :         spdk_bdev_alias_del_all(bdev[2]);
    1116                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev[2]->aliases));
    1117                 :            : 
    1118                 :            :         /* Unregister and free bdevs */
    1119                 :          3 :         spdk_bdev_unregister(bdev[0], NULL, NULL);
    1120                 :          3 :         spdk_bdev_unregister(bdev[1], NULL, NULL);
    1121                 :          3 :         spdk_bdev_unregister(bdev[2], NULL, NULL);
    1122                 :            : 
    1123                 :          3 :         poll_threads();
    1124                 :            : 
    1125                 :          3 :         free(bdev[0]);
    1126                 :          3 :         free(bdev[1]);
    1127                 :          3 :         free(bdev[2]);
    1128                 :            : 
    1129                 :          3 :         ut_fini_bdev();
    1130                 :          3 : }
    1131                 :            : 
    1132                 :            : static void
    1133                 :        444 : io_done(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg)
    1134                 :            : {
    1135                 :        444 :         g_io_done = true;
    1136                 :        444 :         g_io_status = bdev_io->internal.status;
    1137   [ +  +  +  + ]:        444 :         if ((bdev_io->type == SPDK_BDEV_IO_TYPE_ZCOPY) &&
    1138                 :            :             (bdev_io->u.bdev.zcopy.start)) {
    1139                 :          6 :                 g_zcopy_bdev_io = bdev_io;
    1140                 :            :         } else {
    1141                 :        438 :                 spdk_bdev_free_io(bdev_io);
    1142                 :        438 :                 g_zcopy_bdev_io = NULL;
    1143                 :            :         }
    1144                 :        444 : }
    1145                 :            : 
    1146                 :            : struct bdev_ut_io_wait_entry {
    1147                 :            :         struct spdk_bdev_io_wait_entry  entry;
    1148                 :            :         struct spdk_io_channel          *io_ch;
    1149                 :            :         struct spdk_bdev_desc           *desc;
    1150                 :            :         bool                            submitted;
    1151                 :            : };
    1152                 :            : 
    1153                 :            : static void
    1154                 :          6 : io_wait_cb(void *arg)
    1155                 :            : {
    1156                 :          6 :         struct bdev_ut_io_wait_entry *entry = arg;
    1157                 :            :         int rc;
    1158                 :            : 
    1159                 :          6 :         rc = spdk_bdev_read_blocks(entry->desc, entry->io_ch, NULL, 0, 1, io_done, NULL);
    1160                 :          6 :         CU_ASSERT(rc == 0);
    1161                 :          6 :         entry->submitted = true;
    1162                 :          6 : }
    1163                 :            : 
    1164                 :            : static void
    1165                 :          3 : bdev_io_types_test(void)
    1166                 :            : {
    1167                 :            :         struct spdk_bdev *bdev;
    1168                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    1169                 :            :         struct spdk_io_channel *io_ch;
    1170                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    1171                 :            :         int rc;
    1172                 :            : 
    1173                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    1174                 :          3 :         bdev_opts.bdev_io_pool_size = 4;
    1175                 :          3 :         bdev_opts.bdev_io_cache_size = 2;
    1176                 :          3 :         ut_init_bdev(&bdev_opts);
    1177                 :            : 
    1178                 :          3 :         bdev = allocate_bdev("bdev0");
    1179                 :            : 
    1180                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    1181                 :          3 :         CU_ASSERT(rc == 0);
    1182                 :          3 :         poll_threads();
    1183         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    1184                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    1185                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    1186                 :          3 :         CU_ASSERT(io_ch != NULL);
    1187                 :            : 
    1188                 :            :         /* WRITE and WRITE ZEROES are not supported */
    1189                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_WRITE_ZEROES, false);
    1190                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_WRITE, false);
    1191                 :          3 :         rc = spdk_bdev_write_zeroes_blocks(desc, io_ch, 0, 128, io_done, NULL);
    1192                 :          3 :         CU_ASSERT(rc == -ENOTSUP);
    1193                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_WRITE_ZEROES, true);
    1194                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_WRITE, true);
    1195                 :            : 
    1196                 :            :         /* NVME_IO, NVME_IO_MD and NVME_ADMIN are not supported */
    1197                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_NVME_IO, false);
    1198                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_NVME_IO_MD, false);
    1199                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_NVME_ADMIN, false);
    1200                 :          3 :         rc = spdk_bdev_nvme_io_passthru(desc, io_ch, NULL, NULL, 0, NULL, NULL);
    1201                 :          3 :         CU_ASSERT(rc == -ENOTSUP);
    1202                 :          3 :         rc = spdk_bdev_nvme_io_passthru_md(desc, io_ch, NULL, NULL, 0, NULL, 0, NULL, NULL);
    1203                 :          3 :         CU_ASSERT(rc == -ENOTSUP);
    1204                 :          3 :         rc = spdk_bdev_nvme_admin_passthru(desc, io_ch, NULL, NULL, 0, NULL, NULL);
    1205                 :          3 :         CU_ASSERT(rc == -ENOTSUP);
    1206                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_NVME_IO, true);
    1207                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_NVME_IO_MD, true);
    1208                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_NVME_ADMIN, true);
    1209                 :            : 
    1210                 :          3 :         spdk_put_io_channel(io_ch);
    1211                 :          3 :         spdk_bdev_close(desc);
    1212                 :          3 :         free_bdev(bdev);
    1213                 :          3 :         ut_fini_bdev();
    1214                 :          3 : }
    1215                 :            : 
    1216                 :            : static void
    1217                 :          3 : bdev_io_wait_test(void)
    1218                 :            : {
    1219                 :            :         struct spdk_bdev *bdev;
    1220                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    1221                 :            :         struct spdk_io_channel *io_ch;
    1222                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    1223                 :          3 :         struct bdev_ut_io_wait_entry io_wait_entry;
    1224                 :          3 :         struct bdev_ut_io_wait_entry io_wait_entry2;
    1225                 :            :         int rc;
    1226                 :            : 
    1227                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    1228                 :          3 :         bdev_opts.bdev_io_pool_size = 4;
    1229                 :          3 :         bdev_opts.bdev_io_cache_size = 2;
    1230                 :          3 :         ut_init_bdev(&bdev_opts);
    1231                 :            : 
    1232                 :          3 :         bdev = allocate_bdev("bdev0");
    1233                 :            : 
    1234                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    1235                 :          3 :         CU_ASSERT(rc == 0);
    1236                 :          3 :         poll_threads();
    1237         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    1238                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    1239                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    1240                 :          3 :         CU_ASSERT(io_ch != NULL);
    1241                 :            : 
    1242                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, NULL, 0, 1, io_done, NULL);
    1243                 :          3 :         CU_ASSERT(rc == 0);
    1244                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, NULL, 0, 1, io_done, NULL);
    1245                 :          3 :         CU_ASSERT(rc == 0);
    1246                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, NULL, 0, 1, io_done, NULL);
    1247                 :          3 :         CU_ASSERT(rc == 0);
    1248                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, NULL, 0, 1, io_done, NULL);
    1249                 :          3 :         CU_ASSERT(rc == 0);
    1250                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 4);
    1251                 :            : 
    1252                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, NULL, 0, 1, io_done, NULL);
    1253                 :          3 :         CU_ASSERT(rc == -ENOMEM);
    1254                 :            : 
    1255                 :          3 :         io_wait_entry.entry.bdev = bdev;
    1256                 :          3 :         io_wait_entry.entry.cb_fn = io_wait_cb;
    1257                 :          3 :         io_wait_entry.entry.cb_arg = &io_wait_entry;
    1258                 :          3 :         io_wait_entry.io_ch = io_ch;
    1259                 :          3 :         io_wait_entry.desc = desc;
    1260                 :          3 :         io_wait_entry.submitted = false;
    1261                 :            :         /* Cannot use the same io_wait_entry for two different calls. */
    1262                 :          3 :         memcpy(&io_wait_entry2, &io_wait_entry, sizeof(io_wait_entry));
    1263                 :          3 :         io_wait_entry2.entry.cb_arg = &io_wait_entry2;
    1264                 :            : 
    1265                 :            :         /* Queue two I/O waits. */
    1266                 :          3 :         rc = spdk_bdev_queue_io_wait(bdev, io_ch, &io_wait_entry.entry);
    1267                 :          3 :         CU_ASSERT(rc == 0);
    1268         [ -  + ]:          3 :         CU_ASSERT(io_wait_entry.submitted == false);
    1269                 :          3 :         rc = spdk_bdev_queue_io_wait(bdev, io_ch, &io_wait_entry2.entry);
    1270                 :          3 :         CU_ASSERT(rc == 0);
    1271         [ -  + ]:          3 :         CU_ASSERT(io_wait_entry2.submitted == false);
    1272                 :            : 
    1273                 :          3 :         stub_complete_io(1);
    1274                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 4);
    1275         [ -  + ]:          3 :         CU_ASSERT(io_wait_entry.submitted == true);
    1276         [ -  + ]:          3 :         CU_ASSERT(io_wait_entry2.submitted == false);
    1277                 :            : 
    1278                 :          3 :         stub_complete_io(1);
    1279                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 4);
    1280         [ -  + ]:          3 :         CU_ASSERT(io_wait_entry2.submitted == true);
    1281                 :            : 
    1282                 :          3 :         stub_complete_io(4);
    1283                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    1284                 :            : 
    1285                 :          3 :         spdk_put_io_channel(io_ch);
    1286                 :          3 :         spdk_bdev_close(desc);
    1287                 :          3 :         free_bdev(bdev);
    1288                 :          3 :         ut_fini_bdev();
    1289                 :          3 : }
    1290                 :            : 
    1291                 :            : static void
    1292                 :          3 : bdev_io_spans_split_test(void)
    1293                 :            : {
    1294                 :          3 :         struct spdk_bdev bdev;
    1295                 :          3 :         struct spdk_bdev_io bdev_io;
    1296                 :          3 :         struct iovec iov[SPDK_BDEV_IO_NUM_CHILD_IOV];
    1297                 :            : 
    1298         [ -  + ]:          3 :         memset(&bdev, 0, sizeof(bdev));
    1299                 :          3 :         bdev_io.u.bdev.iovs = iov;
    1300                 :            : 
    1301                 :          3 :         bdev_io.type = SPDK_BDEV_IO_TYPE_READ;
    1302                 :          3 :         bdev.optimal_io_boundary = 0;
    1303                 :          3 :         bdev.max_segment_size = 0;
    1304                 :          3 :         bdev.max_num_segments = 0;
    1305                 :          3 :         bdev_io.bdev = &bdev;
    1306                 :            : 
    1307                 :            :         /* bdev has no optimal_io_boundary and max_size set - so this should return false. */
    1308                 :          3 :         CU_ASSERT(bdev_io_should_split(&bdev_io) == false);
    1309                 :            : 
    1310                 :          3 :         bdev.split_on_optimal_io_boundary = true;
    1311                 :          3 :         bdev.optimal_io_boundary = 32;
    1312                 :          3 :         bdev_io.type = SPDK_BDEV_IO_TYPE_RESET;
    1313                 :            : 
    1314                 :            :         /* RESETs are not based on LBAs - so this should return false. */
    1315                 :          3 :         CU_ASSERT(bdev_io_should_split(&bdev_io) == false);
    1316                 :            : 
    1317                 :          3 :         bdev_io.type = SPDK_BDEV_IO_TYPE_READ;
    1318                 :          3 :         bdev_io.u.bdev.offset_blocks = 0;
    1319                 :          3 :         bdev_io.u.bdev.num_blocks = 32;
    1320                 :            : 
    1321                 :            :         /* This I/O run right up to, but does not cross, the boundary - so this should return false. */
    1322                 :          3 :         CU_ASSERT(bdev_io_should_split(&bdev_io) == false);
    1323                 :            : 
    1324                 :          3 :         bdev_io.u.bdev.num_blocks = 33;
    1325                 :            : 
    1326                 :            :         /* This I/O spans a boundary. */
    1327                 :          3 :         CU_ASSERT(bdev_io_should_split(&bdev_io) == true);
    1328                 :            : 
    1329                 :          3 :         bdev_io.u.bdev.num_blocks = 32;
    1330                 :          3 :         bdev.max_segment_size = 512 * 32;
    1331                 :          3 :         bdev.max_num_segments = 1;
    1332                 :          3 :         bdev_io.u.bdev.iovcnt = 1;
    1333                 :          3 :         iov[0].iov_len = 512;
    1334                 :            : 
    1335                 :            :         /* Does not cross and exceed max_size or max_segs */
    1336                 :          3 :         CU_ASSERT(bdev_io_should_split(&bdev_io) == false);
    1337                 :            : 
    1338                 :          3 :         bdev.split_on_optimal_io_boundary = false;
    1339                 :          3 :         bdev.max_segment_size = 512;
    1340                 :          3 :         bdev.max_num_segments = 1;
    1341                 :          3 :         bdev_io.u.bdev.iovcnt = 2;
    1342                 :            : 
    1343                 :            :         /* Exceed max_segs */
    1344                 :          3 :         CU_ASSERT(bdev_io_should_split(&bdev_io) == true);
    1345                 :            : 
    1346                 :          3 :         bdev.max_num_segments = 2;
    1347                 :          3 :         iov[0].iov_len = 513;
    1348                 :          3 :         iov[1].iov_len = 512;
    1349                 :            : 
    1350                 :            :         /* Exceed max_sizes */
    1351                 :          3 :         CU_ASSERT(bdev_io_should_split(&bdev_io) == true);
    1352                 :            : 
    1353                 :          3 :         bdev.max_segment_size = 0;
    1354                 :          3 :         bdev.write_unit_size = 32;
    1355                 :          3 :         bdev.split_on_write_unit = true;
    1356                 :          3 :         bdev_io.type = SPDK_BDEV_IO_TYPE_WRITE;
    1357                 :            : 
    1358                 :            :         /* This I/O is one write unit */
    1359                 :          3 :         CU_ASSERT(bdev_io_should_split(&bdev_io) == false);
    1360                 :            : 
    1361                 :          3 :         bdev_io.u.bdev.num_blocks = 32 * 2;
    1362                 :            : 
    1363                 :            :         /* This I/O is more than one write unit */
    1364                 :          3 :         CU_ASSERT(bdev_io_should_split(&bdev_io) == true);
    1365                 :            : 
    1366                 :          3 :         bdev_io.u.bdev.offset_blocks = 1;
    1367                 :          3 :         bdev_io.u.bdev.num_blocks = 32;
    1368                 :            : 
    1369                 :            :         /* This I/O is not aligned to write unit size */
    1370                 :          3 :         CU_ASSERT(bdev_io_should_split(&bdev_io) == true);
    1371                 :          3 : }
    1372                 :            : 
    1373                 :            : static void
    1374                 :          3 : bdev_io_boundary_split_test(void)
    1375                 :            : {
    1376                 :            :         struct spdk_bdev *bdev;
    1377                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    1378                 :            :         struct spdk_io_channel *io_ch;
    1379                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    1380                 :          3 :         struct iovec iov[SPDK_BDEV_IO_NUM_CHILD_IOV * 2];
    1381                 :            :         struct ut_expected_io *expected_io;
    1382                 :          3 :         void *md_buf = (void *)0xFF000000;
    1383                 :            :         uint64_t i;
    1384                 :            :         int rc;
    1385                 :            : 
    1386                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    1387                 :          3 :         bdev_opts.bdev_io_pool_size = 512;
    1388                 :          3 :         bdev_opts.bdev_io_cache_size = 64;
    1389                 :          3 :         ut_init_bdev(&bdev_opts);
    1390                 :            : 
    1391                 :          3 :         bdev = allocate_bdev("bdev0");
    1392                 :            : 
    1393                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    1394                 :          3 :         CU_ASSERT(rc == 0);
    1395         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    1396                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    1397                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    1398                 :          3 :         CU_ASSERT(io_ch != NULL);
    1399                 :            : 
    1400                 :          3 :         bdev->optimal_io_boundary = 16;
    1401                 :          3 :         bdev->split_on_optimal_io_boundary = false;
    1402                 :            : 
    1403                 :          3 :         g_io_done = false;
    1404                 :            : 
    1405                 :            :         /* First test that the I/O does not get split if split_on_optimal_io_boundary == false. */
    1406                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 14, 8, 1);
    1407                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0xF000, 8 * 512);
    1408                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1409                 :            : 
    1410                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, (void *)0xF000, 14, 8, io_done, NULL);
    1411                 :          3 :         CU_ASSERT(rc == 0);
    1412         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1413                 :            : 
    1414                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    1415                 :          3 :         stub_complete_io(1);
    1416         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1417                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    1418                 :            : 
    1419                 :          3 :         bdev->split_on_optimal_io_boundary = true;
    1420                 :          3 :         bdev->md_interleave = false;
    1421                 :          3 :         bdev->md_len = 8;
    1422                 :            : 
    1423                 :            :         /* Now test that a single-vector command is split correctly.
    1424                 :            :          * Offset 14, length 8, payload 0xF000
    1425                 :            :          *  Child - Offset 14, length 2, payload 0xF000
    1426                 :            :          *  Child - Offset 16, length 6, payload 0xF000 + 2 * 512
    1427                 :            :          *
    1428                 :            :          * Set up the expected values before calling spdk_bdev_read_blocks
    1429                 :            :          */
    1430                 :          3 :         g_io_done = false;
    1431                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 14, 2, 1);
    1432                 :          3 :         expected_io->md_buf = md_buf;
    1433                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0xF000, 2 * 512);
    1434                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1435                 :            : 
    1436                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 16, 6, 1);
    1437                 :          3 :         expected_io->md_buf = md_buf + 2 * 8;
    1438                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0xF000 + 2 * 512), 6 * 512);
    1439                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1440                 :            : 
    1441                 :            :         /* spdk_bdev_read_blocks will submit the first child immediately. */
    1442                 :          3 :         rc = spdk_bdev_read_blocks_with_md(desc, io_ch, (void *)0xF000, md_buf,
    1443                 :            :                                            14, 8, io_done, NULL);
    1444                 :          3 :         CU_ASSERT(rc == 0);
    1445         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1446                 :            : 
    1447                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    1448                 :          3 :         stub_complete_io(2);
    1449         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1450                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    1451                 :            : 
    1452                 :            :         /* Now set up a more complex, multi-vector command that needs to be split,
    1453                 :            :          *  including splitting iovecs.
    1454                 :            :          */
    1455                 :          3 :         iov[0].iov_base = (void *)0x10000;
    1456                 :          3 :         iov[0].iov_len = 512;
    1457                 :          3 :         iov[1].iov_base = (void *)0x20000;
    1458                 :          3 :         iov[1].iov_len = 20 * 512;
    1459                 :          3 :         iov[2].iov_base = (void *)0x30000;
    1460                 :          3 :         iov[2].iov_len = 11 * 512;
    1461                 :            : 
    1462                 :          3 :         g_io_done = false;
    1463                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 14, 2, 2);
    1464                 :          3 :         expected_io->md_buf = md_buf;
    1465                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0x10000, 512);
    1466                 :          3 :         ut_expected_io_set_iov(expected_io, 1, (void *)0x20000, 512);
    1467                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1468                 :            : 
    1469                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 16, 16, 1);
    1470                 :          3 :         expected_io->md_buf = md_buf + 2 * 8;
    1471                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0x20000 + 512), 16 * 512);
    1472                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1473                 :            : 
    1474                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 32, 14, 2);
    1475                 :          3 :         expected_io->md_buf = md_buf + 18 * 8;
    1476                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0x20000 + 17 * 512), 3 * 512);
    1477                 :          3 :         ut_expected_io_set_iov(expected_io, 1, (void *)0x30000, 11 * 512);
    1478                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1479                 :            : 
    1480                 :          3 :         rc = spdk_bdev_writev_blocks_with_md(desc, io_ch, iov, 3, md_buf,
    1481                 :            :                                              14, 32, io_done, NULL);
    1482                 :          3 :         CU_ASSERT(rc == 0);
    1483         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1484                 :            : 
    1485                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 3);
    1486                 :          3 :         stub_complete_io(3);
    1487         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1488                 :            : 
    1489                 :            :         /* Test multi vector command that needs to be split by strip and then needs to be
    1490                 :            :          * split further due to the capacity of child iovs.
    1491                 :            :          */
    1492         [ +  + ]:        195 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV * 2; i++) {
    1493                 :        192 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    1494                 :        192 :                 iov[i].iov_len = 512;
    1495                 :            :         }
    1496                 :            : 
    1497                 :          3 :         bdev->optimal_io_boundary = SPDK_BDEV_IO_NUM_CHILD_IOV;
    1498                 :          3 :         g_io_done = false;
    1499                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 0, SPDK_BDEV_IO_NUM_CHILD_IOV,
    1500                 :            :                                            SPDK_BDEV_IO_NUM_CHILD_IOV);
    1501                 :          3 :         expected_io->md_buf = md_buf;
    1502         [ +  + ]:         99 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV; i++) {
    1503                 :         96 :                 ut_expected_io_set_iov(expected_io, i, (void *)((i + 1) * 0x10000), 512);
    1504                 :            :         }
    1505                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1506                 :            : 
    1507                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, SPDK_BDEV_IO_NUM_CHILD_IOV,
    1508                 :            :                                            SPDK_BDEV_IO_NUM_CHILD_IOV, SPDK_BDEV_IO_NUM_CHILD_IOV);
    1509                 :          3 :         expected_io->md_buf = md_buf + SPDK_BDEV_IO_NUM_CHILD_IOV * 8;
    1510         [ +  + ]:         99 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV; i++) {
    1511                 :         96 :                 ut_expected_io_set_iov(expected_io, i,
    1512                 :         96 :                                        (void *)((i + 1 + SPDK_BDEV_IO_NUM_CHILD_IOV) * 0x10000), 512);
    1513                 :            :         }
    1514                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1515                 :            : 
    1516                 :          3 :         rc = spdk_bdev_readv_blocks_with_md(desc, io_ch, iov, SPDK_BDEV_IO_NUM_CHILD_IOV * 2, md_buf,
    1517                 :            :                                             0, SPDK_BDEV_IO_NUM_CHILD_IOV * 2, io_done, NULL);
    1518                 :          3 :         CU_ASSERT(rc == 0);
    1519         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1520                 :            : 
    1521                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    1522                 :          3 :         stub_complete_io(1);
    1523         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1524                 :            : 
    1525                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    1526                 :          3 :         stub_complete_io(1);
    1527         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1528                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    1529                 :            : 
    1530                 :            :         /* Test multi vector command that needs to be split by strip and then needs to be
    1531                 :            :          * split further due to the capacity of child iovs. In this case, the length of
    1532                 :            :          * the rest of iovec array with an I/O boundary is the multiple of block size.
    1533                 :            :          */
    1534                 :            : 
    1535                 :            :         /* Fill iovec array for exactly one boundary. The iovec cnt for this boundary
    1536                 :            :          * is SPDK_BDEV_IO_NUM_CHILD_IOV + 1, which exceeds the capacity of child iovs.
    1537                 :            :          */
    1538         [ +  + ]:         93 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i++) {
    1539                 :         90 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    1540                 :         90 :                 iov[i].iov_len = 512;
    1541                 :            :         }
    1542         [ +  + ]:          9 :         for (i = SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i < SPDK_BDEV_IO_NUM_CHILD_IOV; i++) {
    1543                 :          6 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    1544                 :          6 :                 iov[i].iov_len = 256;
    1545                 :            :         }
    1546                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV].iov_base = (void *)((SPDK_BDEV_IO_NUM_CHILD_IOV + 1) * 0x10000);
    1547                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV].iov_len = 512;
    1548                 :            : 
    1549                 :            :         /* Add an extra iovec to trigger split */
    1550                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV + 1].iov_base = (void *)((SPDK_BDEV_IO_NUM_CHILD_IOV + 2) * 0x10000);
    1551                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV + 1].iov_len = 512;
    1552                 :            : 
    1553                 :          3 :         bdev->optimal_io_boundary = SPDK_BDEV_IO_NUM_CHILD_IOV;
    1554                 :          3 :         g_io_done = false;
    1555                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 0,
    1556                 :            :                                            SPDK_BDEV_IO_NUM_CHILD_IOV - 1, SPDK_BDEV_IO_NUM_CHILD_IOV);
    1557                 :          3 :         expected_io->md_buf = md_buf;
    1558         [ +  + ]:         93 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i++) {
    1559                 :         90 :                 ut_expected_io_set_iov(expected_io, i,
    1560                 :         90 :                                        (void *)((i + 1) * 0x10000), 512);
    1561                 :            :         }
    1562         [ +  + ]:          9 :         for (i = SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i < SPDK_BDEV_IO_NUM_CHILD_IOV; i++) {
    1563                 :          6 :                 ut_expected_io_set_iov(expected_io, i,
    1564                 :          6 :                                        (void *)((i + 1) * 0x10000), 256);
    1565                 :            :         }
    1566                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1567                 :            : 
    1568                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, SPDK_BDEV_IO_NUM_CHILD_IOV - 1,
    1569                 :            :                                            1, 1);
    1570                 :          3 :         expected_io->md_buf = md_buf + (SPDK_BDEV_IO_NUM_CHILD_IOV - 1) * 8;
    1571                 :          3 :         ut_expected_io_set_iov(expected_io, 0,
    1572                 :            :                                (void *)((SPDK_BDEV_IO_NUM_CHILD_IOV + 1) * 0x10000), 512);
    1573                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1574                 :            : 
    1575                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, SPDK_BDEV_IO_NUM_CHILD_IOV,
    1576                 :            :                                            1, 1);
    1577                 :          3 :         expected_io->md_buf = md_buf + SPDK_BDEV_IO_NUM_CHILD_IOV * 8;
    1578                 :          3 :         ut_expected_io_set_iov(expected_io, 0,
    1579                 :            :                                (void *)((SPDK_BDEV_IO_NUM_CHILD_IOV + 2) * 0x10000), 512);
    1580                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1581                 :            : 
    1582                 :          3 :         rc = spdk_bdev_readv_blocks_with_md(desc, io_ch, iov, SPDK_BDEV_IO_NUM_CHILD_IOV + 2, md_buf,
    1583                 :            :                                             0, SPDK_BDEV_IO_NUM_CHILD_IOV + 1, io_done, NULL);
    1584                 :          3 :         CU_ASSERT(rc == 0);
    1585         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1586                 :            : 
    1587                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    1588                 :          3 :         stub_complete_io(1);
    1589         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1590                 :            : 
    1591                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    1592                 :          3 :         stub_complete_io(2);
    1593         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1594                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    1595                 :            : 
    1596                 :            :         /* Test multi vector command that needs to be split by strip and then needs to be
    1597                 :            :          * split further due to the capacity of child iovs, the child request offset should
    1598                 :            :          * be rewind to last aligned offset and go success without error.
    1599                 :            :          */
    1600         [ +  + ]:         96 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV - 1; i++) {
    1601                 :         93 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    1602                 :         93 :                 iov[i].iov_len = 512;
    1603                 :            :         }
    1604                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV - 1].iov_base = (void *)(SPDK_BDEV_IO_NUM_CHILD_IOV * 0x10000);
    1605                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV - 1].iov_len = 256;
    1606                 :            : 
    1607                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV].iov_base = (void *)((SPDK_BDEV_IO_NUM_CHILD_IOV + 1) * 0x10000);
    1608                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV].iov_len = 256;
    1609                 :            : 
    1610                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV + 1].iov_base = (void *)((SPDK_BDEV_IO_NUM_CHILD_IOV + 2) * 0x10000);
    1611                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV + 1].iov_len = 512;
    1612                 :            : 
    1613                 :          3 :         bdev->optimal_io_boundary = SPDK_BDEV_IO_NUM_CHILD_IOV;
    1614                 :          3 :         g_io_done = false;
    1615                 :          3 :         g_io_status = 0;
    1616                 :            :         /* The first expected io should be start from offset 0 to SPDK_BDEV_IO_NUM_CHILD_IOV - 1 */
    1617                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 0,
    1618                 :            :                                            SPDK_BDEV_IO_NUM_CHILD_IOV - 1, SPDK_BDEV_IO_NUM_CHILD_IOV - 1);
    1619                 :          3 :         expected_io->md_buf = md_buf;
    1620         [ +  + ]:         96 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV - 1; i++) {
    1621                 :         93 :                 ut_expected_io_set_iov(expected_io, i,
    1622                 :         93 :                                        (void *)((i + 1) * 0x10000), 512);
    1623                 :            :         }
    1624                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1625                 :            :         /* The second expected io should be start from offset SPDK_BDEV_IO_NUM_CHILD_IOV - 1 to SPDK_BDEV_IO_NUM_CHILD_IOV */
    1626                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, SPDK_BDEV_IO_NUM_CHILD_IOV - 1,
    1627                 :            :                                            1, 2);
    1628                 :          3 :         expected_io->md_buf = md_buf + (SPDK_BDEV_IO_NUM_CHILD_IOV - 1) * 8;
    1629                 :          3 :         ut_expected_io_set_iov(expected_io, 0,
    1630                 :            :                                (void *)(SPDK_BDEV_IO_NUM_CHILD_IOV * 0x10000), 256);
    1631                 :          3 :         ut_expected_io_set_iov(expected_io, 1,
    1632                 :            :                                (void *)((SPDK_BDEV_IO_NUM_CHILD_IOV + 1) * 0x10000), 256);
    1633                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1634                 :            :         /* The third expected io should be start from offset SPDK_BDEV_IO_NUM_CHILD_IOV to SPDK_BDEV_IO_NUM_CHILD_IOV + 1 */
    1635                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, SPDK_BDEV_IO_NUM_CHILD_IOV,
    1636                 :            :                                            1, 1);
    1637                 :          3 :         expected_io->md_buf = md_buf + SPDK_BDEV_IO_NUM_CHILD_IOV * 8;
    1638                 :          3 :         ut_expected_io_set_iov(expected_io, 0,
    1639                 :            :                                (void *)((SPDK_BDEV_IO_NUM_CHILD_IOV + 2) * 0x10000), 512);
    1640                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1641                 :            : 
    1642                 :          3 :         rc = spdk_bdev_readv_blocks_with_md(desc, io_ch, iov, SPDK_BDEV_IO_NUM_CHILD_IOV * 2, md_buf,
    1643                 :            :                                             0, SPDK_BDEV_IO_NUM_CHILD_IOV + 1, io_done, NULL);
    1644                 :          3 :         CU_ASSERT(rc == 0);
    1645         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1646                 :            : 
    1647                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    1648                 :          3 :         stub_complete_io(1);
    1649         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1650                 :            : 
    1651                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    1652                 :          3 :         stub_complete_io(2);
    1653         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1654                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    1655                 :            : 
    1656                 :            :         /* Test multi vector command that needs to be split due to the IO boundary and
    1657                 :            :          * the capacity of child iovs. Especially test the case when the command is
    1658                 :            :          * split due to the capacity of child iovs, the tail address is not aligned with
    1659                 :            :          * block size and is rewinded to the aligned address.
    1660                 :            :          *
    1661                 :            :          * The iovecs used in read request is complex but is based on the data
    1662                 :            :          * collected in the real issue. We change the base addresses but keep the lengths
    1663                 :            :          * not to loose the credibility of the test.
    1664                 :            :          */
    1665                 :          3 :         bdev->optimal_io_boundary = 128;
    1666                 :          3 :         g_io_done = false;
    1667                 :          3 :         g_io_status = 0;
    1668                 :            : 
    1669         [ +  + ]:         96 :         for (i = 0; i < 31; i++) {
    1670                 :         93 :                 iov[i].iov_base = (void *)(0xFEED0000000 + (i << 20));
    1671                 :         93 :                 iov[i].iov_len = 1024;
    1672                 :            :         }
    1673                 :          3 :         iov[31].iov_base = (void *)0xFEED1F00000;
    1674                 :          3 :         iov[31].iov_len = 32768;
    1675                 :          3 :         iov[32].iov_base = (void *)0xFEED2000000;
    1676                 :          3 :         iov[32].iov_len = 160;
    1677                 :          3 :         iov[33].iov_base = (void *)0xFEED2100000;
    1678                 :          3 :         iov[33].iov_len = 4096;
    1679                 :          3 :         iov[34].iov_base = (void *)0xFEED2200000;
    1680                 :          3 :         iov[34].iov_len = 4096;
    1681                 :          3 :         iov[35].iov_base = (void *)0xFEED2300000;
    1682                 :          3 :         iov[35].iov_len = 4096;
    1683                 :          3 :         iov[36].iov_base = (void *)0xFEED2400000;
    1684                 :          3 :         iov[36].iov_len = 4096;
    1685                 :          3 :         iov[37].iov_base = (void *)0xFEED2500000;
    1686                 :          3 :         iov[37].iov_len = 4096;
    1687                 :          3 :         iov[38].iov_base = (void *)0xFEED2600000;
    1688                 :          3 :         iov[38].iov_len = 4096;
    1689                 :          3 :         iov[39].iov_base = (void *)0xFEED2700000;
    1690                 :          3 :         iov[39].iov_len = 4096;
    1691                 :          3 :         iov[40].iov_base = (void *)0xFEED2800000;
    1692                 :          3 :         iov[40].iov_len = 4096;
    1693                 :          3 :         iov[41].iov_base = (void *)0xFEED2900000;
    1694                 :          3 :         iov[41].iov_len = 4096;
    1695                 :          3 :         iov[42].iov_base = (void *)0xFEED2A00000;
    1696                 :          3 :         iov[42].iov_len = 4096;
    1697                 :          3 :         iov[43].iov_base = (void *)0xFEED2B00000;
    1698                 :          3 :         iov[43].iov_len = 12288;
    1699                 :          3 :         iov[44].iov_base = (void *)0xFEED2C00000;
    1700                 :          3 :         iov[44].iov_len = 8192;
    1701                 :          3 :         iov[45].iov_base = (void *)0xFEED2F00000;
    1702                 :          3 :         iov[45].iov_len = 4096;
    1703                 :          3 :         iov[46].iov_base = (void *)0xFEED3000000;
    1704                 :          3 :         iov[46].iov_len = 4096;
    1705                 :          3 :         iov[47].iov_base = (void *)0xFEED3100000;
    1706                 :          3 :         iov[47].iov_len = 4096;
    1707                 :          3 :         iov[48].iov_base = (void *)0xFEED3200000;
    1708                 :          3 :         iov[48].iov_len = 24576;
    1709                 :          3 :         iov[49].iov_base = (void *)0xFEED3300000;
    1710                 :          3 :         iov[49].iov_len = 16384;
    1711                 :          3 :         iov[50].iov_base = (void *)0xFEED3400000;
    1712                 :          3 :         iov[50].iov_len = 12288;
    1713                 :          3 :         iov[51].iov_base = (void *)0xFEED3500000;
    1714                 :          3 :         iov[51].iov_len = 4096;
    1715                 :          3 :         iov[52].iov_base = (void *)0xFEED3600000;
    1716                 :          3 :         iov[52].iov_len = 4096;
    1717                 :          3 :         iov[53].iov_base = (void *)0xFEED3700000;
    1718                 :          3 :         iov[53].iov_len = 4096;
    1719                 :          3 :         iov[54].iov_base = (void *)0xFEED3800000;
    1720                 :          3 :         iov[54].iov_len = 28672;
    1721                 :          3 :         iov[55].iov_base = (void *)0xFEED3900000;
    1722                 :          3 :         iov[55].iov_len = 20480;
    1723                 :          3 :         iov[56].iov_base = (void *)0xFEED3A00000;
    1724                 :          3 :         iov[56].iov_len = 4096;
    1725                 :          3 :         iov[57].iov_base = (void *)0xFEED3B00000;
    1726                 :          3 :         iov[57].iov_len = 12288;
    1727                 :          3 :         iov[58].iov_base = (void *)0xFEED3C00000;
    1728                 :          3 :         iov[58].iov_len = 4096;
    1729                 :          3 :         iov[59].iov_base = (void *)0xFEED3D00000;
    1730                 :          3 :         iov[59].iov_len = 4096;
    1731                 :          3 :         iov[60].iov_base = (void *)0xFEED3E00000;
    1732                 :          3 :         iov[60].iov_len = 352;
    1733                 :            : 
    1734                 :            :         /* The 1st child IO must be from iov[0] to iov[31] split by the capacity
    1735                 :            :          * of child iovs,
    1736                 :            :          */
    1737                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 0, 126, 32);
    1738                 :          3 :         expected_io->md_buf = md_buf;
    1739         [ +  + ]:         99 :         for (i = 0; i < 32; i++) {
    1740                 :         96 :                 ut_expected_io_set_iov(expected_io, i, iov[i].iov_base, iov[i].iov_len);
    1741                 :            :         }
    1742                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1743                 :            : 
    1744                 :            :         /* The 2nd child IO must be from iov[32] to the first 864 bytes of iov[33]
    1745                 :            :          * split by the IO boundary requirement.
    1746                 :            :          */
    1747                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 126, 2, 2);
    1748                 :          3 :         expected_io->md_buf = md_buf + 126 * 8;
    1749                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[32].iov_base, iov[32].iov_len);
    1750                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[33].iov_base, 864);
    1751                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1752                 :            : 
    1753                 :            :         /* The 3rd child IO must be from the remaining 3232 bytes of iov[33] to
    1754                 :            :          * the first 864 bytes of iov[46] split by the IO boundary requirement.
    1755                 :            :          */
    1756                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 128, 128, 14);
    1757                 :          3 :         expected_io->md_buf = md_buf + 128 * 8;
    1758                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)((uintptr_t)iov[33].iov_base + 864),
    1759                 :          3 :                                iov[33].iov_len - 864);
    1760                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[34].iov_base, iov[34].iov_len);
    1761                 :          3 :         ut_expected_io_set_iov(expected_io, 2, iov[35].iov_base, iov[35].iov_len);
    1762                 :          3 :         ut_expected_io_set_iov(expected_io, 3, iov[36].iov_base, iov[36].iov_len);
    1763                 :          3 :         ut_expected_io_set_iov(expected_io, 4, iov[37].iov_base, iov[37].iov_len);
    1764                 :          3 :         ut_expected_io_set_iov(expected_io, 5, iov[38].iov_base, iov[38].iov_len);
    1765                 :          3 :         ut_expected_io_set_iov(expected_io, 6, iov[39].iov_base, iov[39].iov_len);
    1766                 :          3 :         ut_expected_io_set_iov(expected_io, 7, iov[40].iov_base, iov[40].iov_len);
    1767                 :          3 :         ut_expected_io_set_iov(expected_io, 8, iov[41].iov_base, iov[41].iov_len);
    1768                 :          3 :         ut_expected_io_set_iov(expected_io, 9, iov[42].iov_base, iov[42].iov_len);
    1769                 :          3 :         ut_expected_io_set_iov(expected_io, 10, iov[43].iov_base, iov[43].iov_len);
    1770                 :          3 :         ut_expected_io_set_iov(expected_io, 11, iov[44].iov_base, iov[44].iov_len);
    1771                 :          3 :         ut_expected_io_set_iov(expected_io, 12, iov[45].iov_base, iov[45].iov_len);
    1772                 :          3 :         ut_expected_io_set_iov(expected_io, 13, iov[46].iov_base, 864);
    1773                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1774                 :            : 
    1775                 :            :         /* The 4th child IO must be from the remaining 3232 bytes of iov[46] to the
    1776                 :            :          * first 864 bytes of iov[52] split by the IO boundary requirement.
    1777                 :            :          */
    1778                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 256, 128, 7);
    1779                 :          3 :         expected_io->md_buf = md_buf + 256 * 8;
    1780                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)((uintptr_t)iov[46].iov_base + 864),
    1781                 :          3 :                                iov[46].iov_len - 864);
    1782                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[47].iov_base, iov[47].iov_len);
    1783                 :          3 :         ut_expected_io_set_iov(expected_io, 2, iov[48].iov_base, iov[48].iov_len);
    1784                 :          3 :         ut_expected_io_set_iov(expected_io, 3, iov[49].iov_base, iov[49].iov_len);
    1785                 :          3 :         ut_expected_io_set_iov(expected_io, 4, iov[50].iov_base, iov[50].iov_len);
    1786                 :          3 :         ut_expected_io_set_iov(expected_io, 5, iov[51].iov_base, iov[51].iov_len);
    1787                 :          3 :         ut_expected_io_set_iov(expected_io, 6, iov[52].iov_base, 864);
    1788                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1789                 :            : 
    1790                 :            :         /* The 5th child IO must be from the remaining 3232 bytes of iov[52] to
    1791                 :            :          * the first 4096 bytes of iov[57] split by the IO boundary requirement.
    1792                 :            :          */
    1793                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 384, 128, 6);
    1794                 :          3 :         expected_io->md_buf = md_buf + 384 * 8;
    1795                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)((uintptr_t)iov[52].iov_base + 864),
    1796                 :          3 :                                iov[52].iov_len - 864);
    1797                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[53].iov_base, iov[53].iov_len);
    1798                 :          3 :         ut_expected_io_set_iov(expected_io, 2, iov[54].iov_base, iov[54].iov_len);
    1799                 :          3 :         ut_expected_io_set_iov(expected_io, 3, iov[55].iov_base, iov[55].iov_len);
    1800                 :          3 :         ut_expected_io_set_iov(expected_io, 4, iov[56].iov_base, iov[56].iov_len);
    1801                 :          3 :         ut_expected_io_set_iov(expected_io, 5, iov[57].iov_base, 4960);
    1802                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1803                 :            : 
    1804                 :            :         /* The 6th child IO must be from the remaining 7328 bytes of iov[57]
    1805                 :            :          * to the first 3936 bytes of iov[58] split by the capacity of child iovs.
    1806                 :            :          */
    1807                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 512, 30, 3);
    1808                 :          3 :         expected_io->md_buf = md_buf + 512 * 8;
    1809                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)((uintptr_t)iov[57].iov_base + 4960),
    1810                 :          3 :                                iov[57].iov_len - 4960);
    1811                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[58].iov_base, iov[58].iov_len);
    1812                 :          3 :         ut_expected_io_set_iov(expected_io, 2, iov[59].iov_base, 3936);
    1813                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1814                 :            : 
    1815                 :            :         /* The 7th child IO is from the remaining 160 bytes of iov[59] and iov[60]. */
    1816                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 542, 1, 2);
    1817                 :          3 :         expected_io->md_buf = md_buf + 542 * 8;
    1818                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)((uintptr_t)iov[59].iov_base + 3936),
    1819                 :          3 :                                iov[59].iov_len - 3936);
    1820                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[60].iov_base, iov[60].iov_len);
    1821                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1822                 :            : 
    1823                 :          3 :         rc = spdk_bdev_readv_blocks_with_md(desc, io_ch, iov, 61, md_buf,
    1824                 :            :                                             0, 543, io_done, NULL);
    1825                 :          3 :         CU_ASSERT(rc == 0);
    1826         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1827                 :            : 
    1828                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    1829                 :          3 :         stub_complete_io(1);
    1830         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1831                 :            : 
    1832                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 5);
    1833                 :          3 :         stub_complete_io(5);
    1834         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1835                 :            : 
    1836                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    1837                 :          3 :         stub_complete_io(1);
    1838         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1839                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    1840                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    1841                 :            : 
    1842                 :            :         /* Test a WRITE_ZEROES that would span an I/O boundary.  WRITE_ZEROES should not be
    1843                 :            :          * split, so test that.
    1844                 :            :          */
    1845                 :          3 :         bdev->optimal_io_boundary = 15;
    1846                 :          3 :         g_io_done = false;
    1847                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE_ZEROES, 9, 36, 0);
    1848                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1849                 :            : 
    1850                 :          3 :         rc = spdk_bdev_write_zeroes_blocks(desc, io_ch, 9, 36, io_done, NULL);
    1851                 :          3 :         CU_ASSERT(rc == 0);
    1852         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1853                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    1854                 :          3 :         stub_complete_io(1);
    1855         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1856                 :            : 
    1857                 :            :         /* Test an UNMAP.  This should also not be split. */
    1858                 :          3 :         bdev->optimal_io_boundary = 16;
    1859                 :          3 :         g_io_done = false;
    1860                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_UNMAP, 15, 2, 0);
    1861                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1862                 :            : 
    1863                 :          3 :         rc = spdk_bdev_unmap_blocks(desc, io_ch, 15, 2, io_done, NULL);
    1864                 :          3 :         CU_ASSERT(rc == 0);
    1865         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1866                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    1867                 :          3 :         stub_complete_io(1);
    1868         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1869                 :            : 
    1870                 :            :         /* Test a FLUSH.  This should also not be split. */
    1871                 :          3 :         bdev->optimal_io_boundary = 16;
    1872                 :          3 :         g_io_done = false;
    1873                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_FLUSH, 15, 2, 0);
    1874                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1875                 :            : 
    1876                 :          3 :         rc = spdk_bdev_flush_blocks(desc, io_ch, 15, 2, io_done, NULL);
    1877                 :          3 :         CU_ASSERT(rc == 0);
    1878         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1879                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    1880                 :          3 :         stub_complete_io(1);
    1881         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1882                 :            : 
    1883                 :            :         /* Test a COPY.  This should also not be split. */
    1884                 :          3 :         bdev->optimal_io_boundary = 15;
    1885                 :          3 :         g_io_done = false;
    1886                 :          3 :         expected_io = ut_alloc_expected_copy_io(SPDK_BDEV_IO_TYPE_COPY, 9, 45, 36);
    1887                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1888                 :            : 
    1889                 :          3 :         rc = spdk_bdev_copy_blocks(desc, io_ch, 9, 45, 36, io_done, NULL);
    1890                 :          3 :         CU_ASSERT(rc == 0);
    1891         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1892                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    1893                 :          3 :         stub_complete_io(1);
    1894         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1895                 :            : 
    1896                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&g_bdev_ut_channel->expected_io));
    1897                 :            : 
    1898                 :            :         /* Children requests return an error status */
    1899                 :          3 :         bdev->optimal_io_boundary = 16;
    1900                 :          3 :         iov[0].iov_base = (void *)0x10000;
    1901                 :          3 :         iov[0].iov_len = 512 * 64;
    1902                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_FAILED;
    1903                 :          3 :         g_io_done = false;
    1904                 :          3 :         g_io_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    1905                 :            : 
    1906                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, 1, 1, 64, io_done, NULL);
    1907                 :          3 :         CU_ASSERT(rc == 0);
    1908                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 5);
    1909                 :          3 :         stub_complete_io(4);
    1910         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1911                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    1912                 :          3 :         stub_complete_io(1);
    1913         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1914                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_FAILED);
    1915                 :            : 
    1916                 :            :         /* Test if a multi vector command terminated with failure before continuing
    1917                 :            :          * splitting process when one of child I/O failed.
    1918                 :            :          * The multi vector command is as same as the above that needs to be split by strip
    1919                 :            :          * and then needs to be split further due to the capacity of child iovs.
    1920                 :            :          */
    1921         [ +  + ]:         96 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV - 1; i++) {
    1922                 :         93 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    1923                 :         93 :                 iov[i].iov_len = 512;
    1924                 :            :         }
    1925                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV - 1].iov_base = (void *)(SPDK_BDEV_IO_NUM_CHILD_IOV * 0x10000);
    1926                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV - 1].iov_len = 256;
    1927                 :            : 
    1928                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV].iov_base = (void *)((SPDK_BDEV_IO_NUM_CHILD_IOV + 1) * 0x10000);
    1929                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV].iov_len = 256;
    1930                 :            : 
    1931                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV + 1].iov_base = (void *)((SPDK_BDEV_IO_NUM_CHILD_IOV + 2) * 0x10000);
    1932                 :          3 :         iov[SPDK_BDEV_IO_NUM_CHILD_IOV + 1].iov_len = 512;
    1933                 :            : 
    1934                 :          3 :         bdev->optimal_io_boundary = SPDK_BDEV_IO_NUM_CHILD_IOV;
    1935                 :            : 
    1936                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_FAILED;
    1937                 :          3 :         g_io_done = false;
    1938                 :          3 :         g_io_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    1939                 :            : 
    1940                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, SPDK_BDEV_IO_NUM_CHILD_IOV * 2, 0,
    1941                 :            :                                     SPDK_BDEV_IO_NUM_CHILD_IOV + 1, io_done, NULL);
    1942                 :          3 :         CU_ASSERT(rc == 0);
    1943         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    1944                 :            : 
    1945                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    1946                 :          3 :         stub_complete_io(1);
    1947         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    1948                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_FAILED);
    1949                 :            : 
    1950                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    1951                 :            : 
    1952                 :            :         /* for this test we will create the following conditions to hit the code path where
    1953                 :            :          * we are trying to send and IO following a split that has no iovs because we had to
    1954                 :            :          * trim them for alignment reasons.
    1955                 :            :          *
    1956                 :            :          * - 16K boundary, our IO will start at offset 0 with a length of 0x4200
    1957                 :            :          * - Our IOVs are 0x212 in size so that we run into the 16K boundary at child IOV
    1958                 :            :          *   position 30 and overshoot by 0x2e.
    1959                 :            :          * - That means we'll send the IO and loop back to pick up the remaining bytes at
    1960                 :            :          *   child IOV index 31. When we do, we find that we have to shorten index 31 by 0x2e
    1961                 :            :          *   which eliniates that vector so we just send the first split IO with 30 vectors
    1962                 :            :          *   and let the completion pick up the last 2 vectors.
    1963                 :            :          */
    1964                 :          3 :         bdev->optimal_io_boundary = 32;
    1965                 :          3 :         bdev->split_on_optimal_io_boundary = true;
    1966                 :          3 :         g_io_done = false;
    1967                 :            : 
    1968                 :            :         /* Init all parent IOVs to 0x212 */
    1969         [ +  + ]:        105 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV + 2; i++) {
    1970                 :        102 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    1971                 :        102 :                 iov[i].iov_len = 0x212;
    1972                 :            :         }
    1973                 :            : 
    1974                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 0, SPDK_BDEV_IO_NUM_CHILD_IOV,
    1975                 :            :                                            SPDK_BDEV_IO_NUM_CHILD_IOV - 1);
    1976                 :            :         /* expect 0-29 to be 1:1 with the parent iov */
    1977         [ +  + ]:         93 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i++) {
    1978                 :         90 :                 ut_expected_io_set_iov(expected_io, i, iov[i].iov_base, iov[i].iov_len);
    1979                 :            :         }
    1980                 :            : 
    1981                 :            :         /* expect index 30 to be shortened to 0x1e4 (0x212 - 0x1e) because of the alignment
    1982                 :            :          * where 0x1e is the amount we overshot the 16K boundary
    1983                 :            :          */
    1984                 :          3 :         ut_expected_io_set_iov(expected_io, SPDK_BDEV_IO_NUM_CHILD_IOV - 2,
    1985                 :            :                                (void *)(iov[SPDK_BDEV_IO_NUM_CHILD_IOV - 2].iov_base), 0x1e4);
    1986                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    1987                 :            : 
    1988                 :            :         /* 2nd child IO will have 2 remaining vectors, one to pick up from the one that was
    1989                 :            :          * shortened that take it to the next boundary and then a final one to get us to
    1990                 :            :          * 0x4200 bytes for the IO.
    1991                 :            :          */
    1992                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, SPDK_BDEV_IO_NUM_CHILD_IOV,
    1993                 :            :                                            SPDK_BDEV_IO_NUM_CHILD_IOV, 2);
    1994                 :            :         /* position 30 picked up the remaining bytes to the next boundary */
    1995                 :          3 :         ut_expected_io_set_iov(expected_io, 0,
    1996                 :          3 :                                (void *)(iov[SPDK_BDEV_IO_NUM_CHILD_IOV - 2].iov_base + 0x1e4), 0x2e);
    1997                 :            : 
    1998                 :            :         /* position 31 picked the the rest of the transfer to get us to 0x4200 */
    1999                 :          3 :         ut_expected_io_set_iov(expected_io, 1,
    2000                 :            :                                (void *)(iov[SPDK_BDEV_IO_NUM_CHILD_IOV - 1].iov_base), 0x1d2);
    2001                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2002                 :            : 
    2003                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, SPDK_BDEV_IO_NUM_CHILD_IOV + 1, 0,
    2004                 :            :                                     SPDK_BDEV_IO_NUM_CHILD_IOV + 1, io_done, NULL);
    2005                 :          3 :         CU_ASSERT(rc == 0);
    2006         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2007                 :            : 
    2008                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2009                 :          3 :         stub_complete_io(1);
    2010         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2011                 :            : 
    2012                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2013                 :          3 :         stub_complete_io(1);
    2014         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2015                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2016                 :            : 
    2017                 :          3 :         spdk_put_io_channel(io_ch);
    2018                 :          3 :         spdk_bdev_close(desc);
    2019                 :          3 :         free_bdev(bdev);
    2020                 :          3 :         ut_fini_bdev();
    2021                 :          3 : }
    2022                 :            : 
    2023                 :            : static void
    2024                 :          3 : bdev_io_max_size_and_segment_split_test(void)
    2025                 :            : {
    2026                 :            :         struct spdk_bdev *bdev;
    2027                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    2028                 :            :         struct spdk_io_channel *io_ch;
    2029                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    2030                 :          3 :         struct iovec iov[SPDK_BDEV_IO_NUM_CHILD_IOV * 2];
    2031                 :            :         struct ut_expected_io *expected_io;
    2032                 :            :         uint64_t i;
    2033                 :            :         int rc;
    2034                 :            : 
    2035                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    2036                 :          3 :         bdev_opts.bdev_io_pool_size = 512;
    2037                 :          3 :         bdev_opts.bdev_io_cache_size = 64;
    2038                 :          3 :         bdev_opts.opts_size = sizeof(bdev_opts);
    2039                 :          3 :         ut_init_bdev(&bdev_opts);
    2040                 :            : 
    2041                 :          3 :         bdev = allocate_bdev("bdev0");
    2042                 :            : 
    2043                 :          3 :         rc = spdk_bdev_open_ext(bdev->name, true, bdev_ut_event_cb, NULL, &desc);
    2044                 :          3 :         CU_ASSERT(rc == 0);
    2045         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    2046                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    2047                 :          3 :         CU_ASSERT(io_ch != NULL);
    2048                 :            : 
    2049                 :          3 :         bdev->split_on_optimal_io_boundary = false;
    2050                 :          3 :         bdev->optimal_io_boundary = 0;
    2051                 :            : 
    2052                 :            :         /* Case 0 max_num_segments == 0.
    2053                 :            :          * but segment size 2 * 512 > 512
    2054                 :            :          */
    2055                 :          3 :         bdev->max_segment_size = 512;
    2056                 :          3 :         bdev->max_num_segments = 0;
    2057                 :          3 :         g_io_done = false;
    2058                 :            : 
    2059                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 14, 2, 2);
    2060                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0xF000, 512);
    2061                 :          3 :         ut_expected_io_set_iov(expected_io, 1, (void *)(0xF000 + 512), 512);
    2062                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2063                 :            : 
    2064                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, (void *)0xF000, 14, 2, io_done, NULL);
    2065                 :          3 :         CU_ASSERT(rc == 0);
    2066         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2067                 :            : 
    2068                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2069                 :          3 :         stub_complete_io(1);
    2070         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2071                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2072                 :            : 
    2073                 :            :         /* Case 1 max_segment_size == 0
    2074                 :            :          * but iov num 2 > 1.
    2075                 :            :          */
    2076                 :          3 :         bdev->max_segment_size = 0;
    2077                 :          3 :         bdev->max_num_segments = 1;
    2078                 :          3 :         g_io_done = false;
    2079                 :            : 
    2080                 :          3 :         iov[0].iov_base = (void *)0x10000;
    2081                 :          3 :         iov[0].iov_len = 512;
    2082                 :          3 :         iov[1].iov_base = (void *)0x20000;
    2083                 :          3 :         iov[1].iov_len = 8 * 512;
    2084                 :            : 
    2085                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 14, 1, 1);
    2086                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[0].iov_base, iov[0].iov_len);
    2087                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2088                 :            : 
    2089                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 15, 8, 1);
    2090                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[1].iov_base, iov[1].iov_len);
    2091                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2092                 :            : 
    2093                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, 2, 14, 9, io_done, NULL);
    2094                 :          3 :         CU_ASSERT(rc == 0);
    2095         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2096                 :            : 
    2097                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    2098                 :          3 :         stub_complete_io(2);
    2099         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2100                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2101                 :            : 
    2102                 :            :         /* Test that a non-vector command is split correctly.
    2103                 :            :          * Set up the expected values before calling spdk_bdev_read_blocks
    2104                 :            :          */
    2105                 :          3 :         bdev->max_segment_size = 512;
    2106                 :          3 :         bdev->max_num_segments = 1;
    2107                 :          3 :         g_io_done = false;
    2108                 :            : 
    2109                 :            :         /* Child IO 0 */
    2110                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 14, 1, 1);
    2111                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0xF000, 512);
    2112                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2113                 :            : 
    2114                 :            :         /* Child IO 1 */
    2115                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 15, 1, 1);
    2116                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0xF000 + 1 * 512), 512);
    2117                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2118                 :            : 
    2119                 :            :         /* spdk_bdev_read_blocks will submit the first child immediately. */
    2120                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, (void *)0xF000, 14, 2, io_done, NULL);
    2121                 :          3 :         CU_ASSERT(rc == 0);
    2122         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2123                 :            : 
    2124                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    2125                 :          3 :         stub_complete_io(2);
    2126         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2127                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2128                 :            : 
    2129                 :            :         /* Now set up a more complex, multi-vector command that needs to be split,
    2130                 :            :          * including splitting iovecs.
    2131                 :            :          */
    2132                 :          3 :         bdev->max_segment_size = 2 * 512;
    2133                 :          3 :         bdev->max_num_segments = 1;
    2134                 :          3 :         g_io_done = false;
    2135                 :            : 
    2136                 :          3 :         iov[0].iov_base = (void *)0x10000;
    2137                 :          3 :         iov[0].iov_len = 2 * 512;
    2138                 :          3 :         iov[1].iov_base = (void *)0x20000;
    2139                 :          3 :         iov[1].iov_len = 4 * 512;
    2140                 :          3 :         iov[2].iov_base = (void *)0x30000;
    2141                 :          3 :         iov[2].iov_len = 6 * 512;
    2142                 :            : 
    2143                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 14, 2, 1);
    2144                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[0].iov_base, 512 * 2);
    2145                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2146                 :            : 
    2147                 :            :         /* Split iov[1].size to 2 iov entries then split the segments */
    2148                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 16, 2, 1);
    2149                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[1].iov_base, 512 * 2);
    2150                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2151                 :            : 
    2152                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 18, 2, 1);
    2153                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[1].iov_base + 512 * 2, 512 * 2);
    2154                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2155                 :            : 
    2156                 :            :         /* Split iov[2].size to 3 iov entries then split the segments */
    2157                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 20, 2, 1);
    2158                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[2].iov_base, 512 * 2);
    2159                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2160                 :            : 
    2161                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 22, 2, 1);
    2162                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[2].iov_base + 512 * 2, 512 * 2);
    2163                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2164                 :            : 
    2165                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 24, 2, 1);
    2166                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[2].iov_base + 512 * 4, 512 * 2);
    2167                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2168                 :            : 
    2169                 :          3 :         rc = spdk_bdev_writev_blocks(desc, io_ch, iov, 3, 14, 12, io_done, NULL);
    2170                 :          3 :         CU_ASSERT(rc == 0);
    2171         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2172                 :            : 
    2173                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 6);
    2174                 :          3 :         stub_complete_io(6);
    2175         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2176                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2177                 :            : 
    2178                 :            :         /* Test multi vector command that needs to be split by strip and then needs to be
    2179                 :            :          * split further due to the capacity of parent IO child iovs.
    2180                 :            :          */
    2181                 :          3 :         bdev->max_segment_size = 512;
    2182                 :          3 :         bdev->max_num_segments = 1;
    2183                 :          3 :         g_io_done = false;
    2184                 :            : 
    2185         [ +  + ]:         99 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV; i++) {
    2186                 :         96 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    2187                 :         96 :                 iov[i].iov_len = 512 * 2;
    2188                 :            :         }
    2189                 :            : 
    2190                 :            :         /* Each input iov.size is split into 2 iovs,
    2191                 :            :          * half of the input iov can fill all child iov entries of a single IO.
    2192                 :            :          */
    2193         [ +  + ]:         51 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV / 2; i++) {
    2194                 :         48 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 2 * i, 1, 1);
    2195                 :         48 :                 ut_expected_io_set_iov(expected_io, 0, iov[i].iov_base, 512);
    2196                 :         48 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2197                 :            : 
    2198                 :         48 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 2 * i + 1, 1, 1);
    2199                 :         48 :                 ut_expected_io_set_iov(expected_io, 0, iov[i].iov_base + 512, 512);
    2200                 :         48 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2201                 :            :         }
    2202                 :            : 
    2203                 :            :         /* The remaining iov is split in the second round */
    2204         [ +  + ]:         51 :         for (i = SPDK_BDEV_IO_NUM_CHILD_IOV / 2; i < SPDK_BDEV_IO_NUM_CHILD_IOV; i++) {
    2205                 :         48 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, i * 2, 1, 1);
    2206                 :         48 :                 ut_expected_io_set_iov(expected_io, 0, iov[i].iov_base, 512);
    2207                 :         48 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2208                 :            : 
    2209                 :         48 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, i * 2 + 1, 1, 1);
    2210                 :         48 :                 ut_expected_io_set_iov(expected_io, 0, iov[i].iov_base + 512, 512);
    2211                 :         48 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2212                 :            :         }
    2213                 :            : 
    2214                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, SPDK_BDEV_IO_NUM_CHILD_IOV, 0,
    2215                 :            :                                     SPDK_BDEV_IO_NUM_CHILD_IOV * 2, io_done, NULL);
    2216                 :          3 :         CU_ASSERT(rc == 0);
    2217         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2218                 :            : 
    2219                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == SPDK_BDEV_IO_NUM_CHILD_IOV);
    2220                 :          3 :         stub_complete_io(SPDK_BDEV_IO_NUM_CHILD_IOV);
    2221         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2222                 :            : 
    2223                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == SPDK_BDEV_IO_NUM_CHILD_IOV);
    2224                 :          3 :         stub_complete_io(SPDK_BDEV_IO_NUM_CHILD_IOV);
    2225         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2226                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2227                 :            : 
    2228                 :            :         /* A wrong case, a child IO that is divided does
    2229                 :            :          * not meet the principle of multiples of block size,
    2230                 :            :          * and exits with error
    2231                 :            :          */
    2232                 :          3 :         bdev->max_segment_size = 512;
    2233                 :          3 :         bdev->max_num_segments = 1;
    2234                 :          3 :         g_io_done = false;
    2235                 :            : 
    2236                 :          3 :         iov[0].iov_base = (void *)0x10000;
    2237                 :          3 :         iov[0].iov_len = 512 + 256;
    2238                 :          3 :         iov[1].iov_base = (void *)0x20000;
    2239                 :          3 :         iov[1].iov_len = 256;
    2240                 :            : 
    2241                 :            :         /* iov[0] is split to 512 and 256.
    2242                 :            :          * 256 is less than a block size, and it is found
    2243                 :            :          * in the next round of split that it is the first child IO smaller than
    2244                 :            :          * the block size, so the error exit
    2245                 :            :          */
    2246                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 0, 1, 1);
    2247                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[0].iov_base, 512);
    2248                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2249                 :            : 
    2250                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, 2, 0, 2, io_done, NULL);
    2251                 :          3 :         CU_ASSERT(rc == 0);
    2252         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2253                 :            : 
    2254                 :            :         /* First child IO is OK */
    2255                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2256                 :          3 :         stub_complete_io(1);
    2257         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2258                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2259                 :            : 
    2260                 :            :         /* error exit */
    2261                 :          3 :         stub_complete_io(1);
    2262         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2263                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_FAILED);
    2264                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2265                 :            : 
    2266                 :            :         /* Test multi vector command that needs to be split by strip and then needs to be
    2267                 :            :          * split further due to the capacity of child iovs.
    2268                 :            :          *
    2269                 :            :          * In this case, the last two iovs need to be split, but it will exceed the capacity
    2270                 :            :          * of child iovs, so it needs to wait until the first batch completed.
    2271                 :            :          */
    2272                 :          3 :         bdev->max_segment_size = 512;
    2273                 :          3 :         bdev->max_num_segments = SPDK_BDEV_IO_NUM_CHILD_IOV;
    2274                 :          3 :         g_io_done = false;
    2275                 :            : 
    2276         [ +  + ]:         93 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i++) {
    2277                 :         90 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    2278                 :         90 :                 iov[i].iov_len = 512;
    2279                 :            :         }
    2280         [ +  + ]:          9 :         for (i = SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i < SPDK_BDEV_IO_NUM_CHILD_IOV; i++) {
    2281                 :          6 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    2282                 :          6 :                 iov[i].iov_len = 512 * 2;
    2283                 :            :         }
    2284                 :            : 
    2285                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 0,
    2286                 :            :                                            SPDK_BDEV_IO_NUM_CHILD_IOV, SPDK_BDEV_IO_NUM_CHILD_IOV);
    2287                 :            :         /* 0 ~ (SPDK_BDEV_IO_NUM_CHILD_IOV - 2) Will not be split */
    2288         [ +  + ]:         93 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i++) {
    2289                 :         90 :                 ut_expected_io_set_iov(expected_io, i, iov[i].iov_base, iov[i].iov_len);
    2290                 :            :         }
    2291                 :            :         /* (SPDK_BDEV_IO_NUM_CHILD_IOV - 2) is split */
    2292                 :          3 :         ut_expected_io_set_iov(expected_io, i, iov[i].iov_base, 512);
    2293                 :          3 :         ut_expected_io_set_iov(expected_io, i + 1, iov[i].iov_base + 512, 512);
    2294                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2295                 :            : 
    2296                 :            :         /* Child iov entries exceed the max num of parent IO so split it in next round */
    2297                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, SPDK_BDEV_IO_NUM_CHILD_IOV, 2, 2);
    2298                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[i + 1].iov_base, 512);
    2299                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[i + 1].iov_base + 512, 512);
    2300                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2301                 :            : 
    2302                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, SPDK_BDEV_IO_NUM_CHILD_IOV, 0,
    2303                 :            :                                     SPDK_BDEV_IO_NUM_CHILD_IOV + 2, io_done, NULL);
    2304                 :          3 :         CU_ASSERT(rc == 0);
    2305         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2306                 :            : 
    2307                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2308                 :          3 :         stub_complete_io(1);
    2309         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2310                 :            : 
    2311                 :            :         /* Next round */
    2312                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2313                 :          3 :         stub_complete_io(1);
    2314         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2315                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2316                 :            : 
    2317                 :            :         /* This case is similar to the previous one, but the io composed of
    2318                 :            :          * the last few entries of child iov is not enough for a blocklen, so they
    2319                 :            :          * cannot be put into this IO, but wait until the next time.
    2320                 :            :          */
    2321                 :          3 :         bdev->max_segment_size = 512;
    2322                 :          3 :         bdev->max_num_segments = SPDK_BDEV_IO_NUM_CHILD_IOV;
    2323                 :          3 :         g_io_done = false;
    2324                 :            : 
    2325         [ +  + ]:         93 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i++) {
    2326                 :         90 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    2327                 :         90 :                 iov[i].iov_len = 512;
    2328                 :            :         }
    2329                 :            : 
    2330         [ +  + ]:         15 :         for (i = SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i < SPDK_BDEV_IO_NUM_CHILD_IOV + 2; i++) {
    2331                 :         12 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    2332                 :         12 :                 iov[i].iov_len = 128;
    2333                 :            :         }
    2334                 :            : 
    2335                 :            :         /* First child iovcnt is't SPDK_BDEV_IO_NUM_CHILD_IOV but SPDK_BDEV_IO_NUM_CHILD_IOV - 2.
    2336                 :            :          * Because the left 2 iov is not enough for a blocklen.
    2337                 :            :          */
    2338                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 0,
    2339                 :            :                                            SPDK_BDEV_IO_NUM_CHILD_IOV - 2, SPDK_BDEV_IO_NUM_CHILD_IOV - 2);
    2340         [ +  + ]:         93 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i++) {
    2341                 :         90 :                 ut_expected_io_set_iov(expected_io, i, iov[i].iov_base, iov[i].iov_len);
    2342                 :            :         }
    2343                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2344                 :            : 
    2345                 :            :         /* The second child io waits until the end of the first child io before executing.
    2346                 :            :          * Because the iovcnt of the two IOs exceeds the child iovcnt of the parent IO.
    2347                 :            :          * SPDK_BDEV_IO_NUM_CHILD_IOV - 2 to SPDK_BDEV_IO_NUM_CHILD_IOV + 2
    2348                 :            :          */
    2349                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, SPDK_BDEV_IO_NUM_CHILD_IOV - 2,
    2350                 :            :                                            1, 4);
    2351                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[i].iov_base, iov[i].iov_len);
    2352                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[i + 1].iov_base, iov[i + 1].iov_len);
    2353                 :          3 :         ut_expected_io_set_iov(expected_io, 2, iov[i + 2].iov_base, iov[i + 2].iov_len);
    2354                 :          3 :         ut_expected_io_set_iov(expected_io, 3, iov[i + 3].iov_base, iov[i + 3].iov_len);
    2355                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2356                 :            : 
    2357                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, SPDK_BDEV_IO_NUM_CHILD_IOV + 2, 0,
    2358                 :            :                                     SPDK_BDEV_IO_NUM_CHILD_IOV - 1, io_done, NULL);
    2359                 :          3 :         CU_ASSERT(rc == 0);
    2360         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2361                 :            : 
    2362                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2363                 :          3 :         stub_complete_io(1);
    2364         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2365                 :            : 
    2366                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2367                 :          3 :         stub_complete_io(1);
    2368         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2369                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2370                 :            : 
    2371                 :            :         /* A very complicated case. Each sg entry exceeds max_segment_size and
    2372                 :            :          * needs to be split. At the same time, child io must be a multiple of blocklen.
    2373                 :            :          * At the same time, child iovcnt exceeds parent iovcnt.
    2374                 :            :          */
    2375                 :          3 :         bdev->max_segment_size = 512 + 128;
    2376                 :          3 :         bdev->max_num_segments = 3;
    2377                 :          3 :         g_io_done = false;
    2378                 :            : 
    2379         [ +  + ]:         93 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i++) {
    2380                 :         90 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    2381                 :         90 :                 iov[i].iov_len = 512 + 256;
    2382                 :            :         }
    2383                 :            : 
    2384         [ +  + ]:         15 :         for (i = SPDK_BDEV_IO_NUM_CHILD_IOV - 2; i < SPDK_BDEV_IO_NUM_CHILD_IOV + 2; i++) {
    2385                 :         12 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    2386                 :         12 :                 iov[i].iov_len = 512 + 128;
    2387                 :            :         }
    2388                 :            : 
    2389                 :            :         /* Child IOs use 9 entries per for() round and 3 * 9 = 27 child iov entries.
    2390                 :            :          * Consume 4 parent IO iov entries per for() round and 6 block size.
    2391                 :            :          * Generate 9 child IOs.
    2392                 :            :          */
    2393         [ +  + ]:         12 :         for (i = 0; i < 3; i++) {
    2394                 :          9 :                 uint32_t j = i * 4;
    2395                 :          9 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, i * 6, 2, 3);
    2396                 :          9 :                 ut_expected_io_set_iov(expected_io, 0, iov[j].iov_base, 640);
    2397                 :          9 :                 ut_expected_io_set_iov(expected_io, 1, iov[j].iov_base + 640, 128);
    2398                 :          9 :                 ut_expected_io_set_iov(expected_io, 2, iov[j + 1].iov_base, 256);
    2399                 :          9 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2400                 :            : 
    2401                 :            :                 /* Child io must be a multiple of blocklen
    2402                 :            :                  * iov[j + 2] must be split. If the third entry is also added,
    2403                 :            :                  * the multiple of blocklen cannot be guaranteed. But it still
    2404                 :            :                  * occupies one iov entry of the parent child iov.
    2405                 :            :                  */
    2406                 :          9 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, i * 6 + 2, 2, 2);
    2407                 :          9 :                 ut_expected_io_set_iov(expected_io, 0, iov[j + 1].iov_base + 256, 512);
    2408                 :          9 :                 ut_expected_io_set_iov(expected_io, 1, iov[j + 2].iov_base, 512);
    2409                 :          9 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2410                 :            : 
    2411                 :          9 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, i * 6 + 4, 2, 3);
    2412                 :          9 :                 ut_expected_io_set_iov(expected_io, 0, iov[j + 2].iov_base + 512, 256);
    2413                 :          9 :                 ut_expected_io_set_iov(expected_io, 1, iov[j + 3].iov_base, 640);
    2414                 :          9 :                 ut_expected_io_set_iov(expected_io, 2, iov[j + 3].iov_base + 640, 128);
    2415                 :          9 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2416                 :            :         }
    2417                 :            : 
    2418                 :            :         /* Child iov position at 27, the 10th child IO
    2419                 :            :          * iov entry index is 3 * 4 and offset is 3 * 6
    2420                 :            :          */
    2421                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 18, 2, 3);
    2422                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[12].iov_base, 640);
    2423                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[12].iov_base + 640, 128);
    2424                 :          3 :         ut_expected_io_set_iov(expected_io, 2, iov[13].iov_base, 256);
    2425                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2426                 :            : 
    2427                 :            :         /* Child iov position at 30, the 11th child IO */
    2428                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 20, 2, 2);
    2429                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[13].iov_base + 256, 512);
    2430                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[14].iov_base, 512);
    2431                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2432                 :            : 
    2433                 :            :         /* The 2nd split round and iovpos is 0, the 12th child IO */
    2434                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 22, 2, 3);
    2435                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[14].iov_base + 512, 256);
    2436                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[15].iov_base, 640);
    2437                 :          3 :         ut_expected_io_set_iov(expected_io, 2, iov[15].iov_base + 640, 128);
    2438                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2439                 :            : 
    2440                 :            :         /* Consume 9 child IOs and 27 child iov entries.
    2441                 :            :          * Consume 4 parent IO iov entries per for() round and 6 block size.
    2442                 :            :          * Parent IO iov index start from 16 and block offset start from 24
    2443                 :            :          */
    2444         [ +  + ]:         12 :         for (i = 0; i < 3; i++) {
    2445                 :          9 :                 uint32_t j = i * 4 + 16;
    2446                 :          9 :                 uint32_t offset = i * 6 + 24;
    2447                 :          9 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, offset, 2, 3);
    2448                 :          9 :                 ut_expected_io_set_iov(expected_io, 0, iov[j].iov_base, 640);
    2449                 :          9 :                 ut_expected_io_set_iov(expected_io, 1, iov[j].iov_base + 640, 128);
    2450                 :          9 :                 ut_expected_io_set_iov(expected_io, 2, iov[j + 1].iov_base, 256);
    2451                 :          9 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2452                 :            : 
    2453                 :            :                 /* Child io must be a multiple of blocklen
    2454                 :            :                  * iov[j + 2] must be split. If the third entry is also added,
    2455                 :            :                  * the multiple of blocklen cannot be guaranteed. But it still
    2456                 :            :                  * occupies one iov entry of the parent child iov.
    2457                 :            :                  */
    2458                 :          9 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, offset + 2, 2, 2);
    2459                 :          9 :                 ut_expected_io_set_iov(expected_io, 0, iov[j + 1].iov_base + 256, 512);
    2460                 :          9 :                 ut_expected_io_set_iov(expected_io, 1, iov[j + 2].iov_base, 512);
    2461                 :          9 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2462                 :            : 
    2463                 :          9 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, offset + 4, 2, 3);
    2464                 :          9 :                 ut_expected_io_set_iov(expected_io, 0, iov[j + 2].iov_base + 512, 256);
    2465                 :          9 :                 ut_expected_io_set_iov(expected_io, 1, iov[j + 3].iov_base, 640);
    2466                 :          9 :                 ut_expected_io_set_iov(expected_io, 2, iov[j + 3].iov_base + 640, 128);
    2467                 :          9 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2468                 :            :         }
    2469                 :            : 
    2470                 :            :         /* The 22th child IO, child iov position at 30 */
    2471                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 42, 1, 1);
    2472                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[28].iov_base, 512);
    2473                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2474                 :            : 
    2475                 :            :         /* The third round */
    2476                 :            :         /* Here is the 23nd child IO and child iovpos is 0 */
    2477                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 43, 2, 3);
    2478                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[28].iov_base + 512, 256);
    2479                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[29].iov_base, 640);
    2480                 :          3 :         ut_expected_io_set_iov(expected_io, 2, iov[29].iov_base + 640, 128);
    2481                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2482                 :            : 
    2483                 :            :         /* The 24th child IO */
    2484                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 45, 3, 3);
    2485                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[30].iov_base, 640);
    2486                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[31].iov_base, 640);
    2487                 :          3 :         ut_expected_io_set_iov(expected_io, 2, iov[32].iov_base, 256);
    2488                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2489                 :            : 
    2490                 :            :         /* The 25th child IO */
    2491                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 48, 2, 2);
    2492                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[32].iov_base + 256, 384);
    2493                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[33].iov_base, 640);
    2494                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2495                 :            : 
    2496                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, SPDK_BDEV_IO_NUM_CHILD_IOV + 2, 0,
    2497                 :            :                                     50, io_done, NULL);
    2498                 :          3 :         CU_ASSERT(rc == 0);
    2499         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2500                 :            : 
    2501                 :            :         /* Parent IO supports up to 32 child iovs, so it is calculated that
    2502                 :            :          * a maximum of 11 IOs can be split at a time, and the
    2503                 :            :          * splitting will continue after the first batch is over.
    2504                 :            :          */
    2505                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 11);
    2506                 :          3 :         stub_complete_io(11);
    2507         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2508                 :            : 
    2509                 :            :         /* The 2nd round */
    2510                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 11);
    2511                 :          3 :         stub_complete_io(11);
    2512         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2513                 :            : 
    2514                 :            :         /* The last round */
    2515                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 3);
    2516                 :          3 :         stub_complete_io(3);
    2517         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2518                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2519                 :            : 
    2520                 :            :         /* Test an WRITE_ZEROES.  This should also not be split. */
    2521                 :          3 :         bdev->max_segment_size = 512;
    2522                 :          3 :         bdev->max_num_segments = 1;
    2523                 :          3 :         g_io_done = false;
    2524                 :            : 
    2525                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE_ZEROES, 9, 36, 0);
    2526                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2527                 :            : 
    2528                 :          3 :         rc = spdk_bdev_write_zeroes_blocks(desc, io_ch, 9, 36, io_done, NULL);
    2529                 :          3 :         CU_ASSERT(rc == 0);
    2530         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2531                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2532                 :          3 :         stub_complete_io(1);
    2533         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2534                 :            : 
    2535                 :            :         /* Test an UNMAP.  This should also not be split. */
    2536                 :          3 :         g_io_done = false;
    2537                 :            : 
    2538                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_UNMAP, 15, 4, 0);
    2539                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2540                 :            : 
    2541                 :          3 :         rc = spdk_bdev_unmap_blocks(desc, io_ch, 15, 4, io_done, NULL);
    2542                 :          3 :         CU_ASSERT(rc == 0);
    2543         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2544                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2545                 :          3 :         stub_complete_io(1);
    2546         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2547                 :            : 
    2548                 :            :         /* Test a FLUSH.  This should also not be split. */
    2549                 :          3 :         g_io_done = false;
    2550                 :            : 
    2551                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_FLUSH, 15, 4, 0);
    2552                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2553                 :            : 
    2554                 :          3 :         rc = spdk_bdev_flush_blocks(desc, io_ch, 15, 2, io_done, NULL);
    2555                 :          3 :         CU_ASSERT(rc == 0);
    2556         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2557                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2558                 :          3 :         stub_complete_io(1);
    2559         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2560                 :            : 
    2561                 :            :         /* Test a COPY.  This should also not be split. */
    2562                 :          3 :         g_io_done = false;
    2563                 :            : 
    2564                 :          3 :         expected_io = ut_alloc_expected_copy_io(SPDK_BDEV_IO_TYPE_COPY, 9, 45, 36);
    2565                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2566                 :            : 
    2567                 :          3 :         rc = spdk_bdev_copy_blocks(desc, io_ch, 9, 45, 36, io_done, NULL);
    2568                 :          3 :         CU_ASSERT(rc == 0);
    2569         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2570                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2571                 :          3 :         stub_complete_io(1);
    2572         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2573                 :            : 
    2574                 :            :         /* Test that IOs are split on max_rw_size */
    2575                 :          3 :         bdev->max_rw_size = 2;
    2576                 :          3 :         bdev->max_segment_size = 0;
    2577                 :          3 :         bdev->max_num_segments = 0;
    2578                 :          3 :         g_io_done = false;
    2579                 :            : 
    2580                 :            :         /* 5 blocks in a contiguous buffer */
    2581                 :          3 :         iov[0].iov_base = (void *)0x10000;
    2582                 :          3 :         iov[0].iov_len = 5 * 512;
    2583                 :            : 
    2584                 :            :         /* First: offset=0, num_blocks=2 */
    2585                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 0, 2, 1);
    2586                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0x10000, 2 * 512);
    2587                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2588                 :            :         /* Second: offset=2, num_blocks=2 */
    2589                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 2, 2, 1);
    2590                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0x10000 + 2 * 512, 2 * 512);
    2591                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2592                 :            :         /* Third: offset=4, num_blocks=1 */
    2593                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 4, 1, 1);
    2594                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0x10000 + 4 * 512, 512);
    2595                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2596                 :            : 
    2597                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, 1, 0, 5, io_done, NULL);
    2598                 :          3 :         CU_ASSERT(rc == 0);
    2599         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2600                 :            : 
    2601                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 3);
    2602                 :          3 :         stub_complete_io(3);
    2603         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2604                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2605                 :            : 
    2606                 :            :         /* Check splitting on both max_rw_size + max_num_segments */
    2607                 :          3 :         bdev->max_rw_size = 2;
    2608                 :          3 :         bdev->max_num_segments = 2;
    2609                 :          3 :         bdev->max_segment_size = 0;
    2610                 :          3 :         g_io_done = false;
    2611                 :            : 
    2612                 :            :         /* 5 blocks split across 4 iovs */
    2613                 :          3 :         iov[0].iov_base = (void *)0x10000;
    2614                 :          3 :         iov[0].iov_len = 3 * 512;
    2615                 :          3 :         iov[1].iov_base = (void *)0x20000;
    2616                 :          3 :         iov[1].iov_len = 256;
    2617                 :          3 :         iov[2].iov_base = (void *)0x30000;
    2618                 :          3 :         iov[2].iov_len = 256;
    2619                 :          3 :         iov[3].iov_base = (void *)0x40000;
    2620                 :          3 :         iov[3].iov_len = 512;
    2621                 :            : 
    2622                 :            :         /* First: offset=0, num_blocks=2, iovcnt=1 */
    2623                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 0, 2, 1);
    2624                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0x10000, 2 * 512);
    2625                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2626                 :            :         /* Second: offset=2, num_blocks=1, iovcnt=1 (max_segment_size prevents from submitting
    2627                 :            :          * the rest of iov[0], and iov[1]+iov[2])
    2628                 :            :          */
    2629                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 2, 1, 1);
    2630                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0x10000 + 2 * 512, 512);
    2631                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2632                 :            :         /* Third: offset=3, num_blocks=1, iovcnt=2 (iov[1]+iov[2]) */
    2633                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 3, 1, 2);
    2634                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0x20000, 256);
    2635                 :          3 :         ut_expected_io_set_iov(expected_io, 1, (void *)0x30000, 256);
    2636                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2637                 :            :         /* Fourth: offset=4, num_blocks=1, iovcnt=1 (iov[3]) */
    2638                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 4, 1, 1);
    2639                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0x40000, 512);
    2640                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2641                 :            : 
    2642                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, 4, 0, 5, io_done, NULL);
    2643                 :          3 :         CU_ASSERT(rc == 0);
    2644         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2645                 :            : 
    2646                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 4);
    2647                 :          3 :         stub_complete_io(4);
    2648         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2649                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2650                 :            : 
    2651                 :            :         /* Check splitting on both max_rw_size + max_segment_size */
    2652                 :          3 :         bdev->max_rw_size = 2;
    2653                 :          3 :         bdev->max_segment_size = 512;
    2654                 :          3 :         bdev->max_num_segments = 0;
    2655                 :          3 :         g_io_done = false;
    2656                 :            : 
    2657                 :            :         /* 6 blocks in a contiguous buffer */
    2658                 :          3 :         iov[0].iov_base = (void *)0x10000;
    2659                 :          3 :         iov[0].iov_len = 6 * 512;
    2660                 :            : 
    2661                 :            :         /* We expect 3 IOs each with 2 blocks and 2 iovs */
    2662         [ +  + ]:         12 :         for (i = 0; i < 3; ++i) {
    2663                 :          9 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, i * 2, 2, 2);
    2664                 :          9 :                 ut_expected_io_set_iov(expected_io, 0, (void *)0x10000 + i * 2 * 512, 512);
    2665                 :          9 :                 ut_expected_io_set_iov(expected_io, 1, (void *)0x10000 + i * 2 * 512 + 512, 512);
    2666                 :          9 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2667                 :            :         }
    2668                 :            : 
    2669                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, 1, 0, 6, io_done, NULL);
    2670                 :          3 :         CU_ASSERT(rc == 0);
    2671         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2672                 :            : 
    2673                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 3);
    2674                 :          3 :         stub_complete_io(3);
    2675         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2676                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2677                 :            : 
    2678                 :            :         /* Check splitting on max_rw_size limited by SPDK_BDEV_IO_NUM_CHILD_IOV */
    2679                 :          3 :         bdev->max_rw_size = 1;
    2680                 :          3 :         bdev->max_segment_size = 0;
    2681                 :          3 :         bdev->max_num_segments = 0;
    2682                 :          3 :         g_io_done = false;
    2683                 :            : 
    2684                 :            :         /* SPDK_BDEV_IO_NUM_CHILD_IOV + 1 blocks */
    2685                 :          3 :         iov[0].iov_base = (void *)0x10000;
    2686                 :          3 :         iov[0].iov_len = (SPDK_BDEV_IO_NUM_CHILD_IOV + 1) * 512;
    2687                 :            : 
    2688                 :            :         /* We expect SPDK_BDEV_IO_NUM_CHILD_IOV + 1 IOs each with a single iov */
    2689         [ +  + ]:         12 :         for (i = 0; i < 3; ++i) {
    2690                 :          9 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, i, 1, 1);
    2691                 :          9 :                 ut_expected_io_set_iov(expected_io, 0, (void *)0x10000 + i * 512, 512);
    2692                 :          9 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2693                 :            :         }
    2694                 :            : 
    2695                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, 1, 0, SPDK_BDEV_IO_NUM_CHILD_IOV + 1, io_done, NULL);
    2696                 :          3 :         CU_ASSERT(rc == 0);
    2697         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2698                 :            : 
    2699                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == SPDK_BDEV_IO_NUM_CHILD_IOV);
    2700                 :          3 :         stub_complete_io(SPDK_BDEV_IO_NUM_CHILD_IOV);
    2701         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2702                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2703                 :          3 :         stub_complete_io(1);
    2704         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2705                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2706                 :            : 
    2707                 :          3 :         spdk_put_io_channel(io_ch);
    2708                 :          3 :         spdk_bdev_close(desc);
    2709                 :          3 :         free_bdev(bdev);
    2710                 :          3 :         ut_fini_bdev();
    2711                 :          3 : }
    2712                 :            : 
    2713                 :            : static void
    2714                 :          3 : bdev_io_mix_split_test(void)
    2715                 :            : {
    2716                 :            :         struct spdk_bdev *bdev;
    2717                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    2718                 :            :         struct spdk_io_channel *io_ch;
    2719                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    2720                 :          3 :         struct iovec iov[SPDK_BDEV_IO_NUM_CHILD_IOV * 2];
    2721                 :            :         struct ut_expected_io *expected_io;
    2722                 :            :         uint64_t i;
    2723                 :            :         int rc;
    2724                 :            : 
    2725                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    2726                 :          3 :         bdev_opts.bdev_io_pool_size = 512;
    2727                 :          3 :         bdev_opts.bdev_io_cache_size = 64;
    2728                 :          3 :         ut_init_bdev(&bdev_opts);
    2729                 :            : 
    2730                 :          3 :         bdev = allocate_bdev("bdev0");
    2731                 :            : 
    2732                 :          3 :         rc = spdk_bdev_open_ext(bdev->name, true, bdev_ut_event_cb, NULL, &desc);
    2733                 :          3 :         CU_ASSERT(rc == 0);
    2734         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    2735                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    2736                 :          3 :         CU_ASSERT(io_ch != NULL);
    2737                 :            : 
    2738                 :            :         /* First case optimal_io_boundary == max_segment_size * max_num_segments */
    2739                 :          3 :         bdev->split_on_optimal_io_boundary = true;
    2740                 :          3 :         bdev->optimal_io_boundary = 16;
    2741                 :            : 
    2742                 :          3 :         bdev->max_segment_size = 512;
    2743                 :          3 :         bdev->max_num_segments = 16;
    2744                 :          3 :         g_io_done = false;
    2745                 :            : 
    2746                 :            :         /* IO crossing the IO boundary requires split
    2747                 :            :          * Total 2 child IOs.
    2748                 :            :          */
    2749                 :            : 
    2750                 :            :         /* The 1st child IO split the segment_size to multiple segment entry */
    2751                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 14, 2, 2);
    2752                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0xF000, 512);
    2753                 :          3 :         ut_expected_io_set_iov(expected_io, 1, (void *)(0xF000 + 512), 512);
    2754                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2755                 :            : 
    2756                 :            :         /* The 2nd child IO split the segment_size to multiple segment entry */
    2757                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 16, 2, 2);
    2758                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0xF000 + 2 * 512), 512);
    2759                 :          3 :         ut_expected_io_set_iov(expected_io, 1, (void *)(0xF000 + 3 * 512), 512);
    2760                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2761                 :            : 
    2762                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, (void *)0xF000, 14, 4, io_done, NULL);
    2763                 :          3 :         CU_ASSERT(rc == 0);
    2764         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2765                 :            : 
    2766                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    2767                 :          3 :         stub_complete_io(2);
    2768         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2769                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2770                 :            : 
    2771                 :            :         /* Second case optimal_io_boundary > max_segment_size * max_num_segments */
    2772                 :          3 :         bdev->max_segment_size = 15 * 512;
    2773                 :          3 :         bdev->max_num_segments = 1;
    2774                 :          3 :         g_io_done = false;
    2775                 :            : 
    2776                 :            :         /* IO crossing the IO boundary requires split.
    2777                 :            :          * The 1st child IO segment size exceeds the max_segment_size,
    2778                 :            :          * So 1st child IO will be split to multiple segment entry.
    2779                 :            :          * Then it split to 2 child IOs because of the max_num_segments.
    2780                 :            :          * Total 3 child IOs.
    2781                 :            :          */
    2782                 :            : 
    2783                 :            :         /* The first 2 IOs are in an IO boundary.
    2784                 :            :          * Because the optimal_io_boundary > max_segment_size * max_num_segments
    2785                 :            :          * So it split to the first 2 IOs.
    2786                 :            :          */
    2787                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 0, 15, 1);
    2788                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0xF000, 512 * 15);
    2789                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2790                 :            : 
    2791                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 15, 1, 1);
    2792                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0xF000 + 512 * 15), 512);
    2793                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2794                 :            : 
    2795                 :            :         /* The 3rd Child IO is because of the io boundary */
    2796                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 16, 2, 1);
    2797                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0xF000 + 512 * 16), 512 * 2);
    2798                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2799                 :            : 
    2800                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, (void *)0xF000, 0, 18, io_done, NULL);
    2801                 :          3 :         CU_ASSERT(rc == 0);
    2802         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2803                 :            : 
    2804                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 3);
    2805                 :          3 :         stub_complete_io(3);
    2806         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2807                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2808                 :            : 
    2809                 :            :         /* Third case optimal_io_boundary < max_segment_size * max_num_segments */
    2810                 :          3 :         bdev->max_segment_size = 17 * 512;
    2811                 :          3 :         bdev->max_num_segments = 1;
    2812                 :          3 :         g_io_done = false;
    2813                 :            : 
    2814                 :            :         /* IO crossing the IO boundary requires split.
    2815                 :            :          * Child IO does not split.
    2816                 :            :          * Total 2 child IOs.
    2817                 :            :          */
    2818                 :            : 
    2819                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 0, 16, 1);
    2820                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0xF000, 512 * 16);
    2821                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2822                 :            : 
    2823                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 16, 2, 1);
    2824                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0xF000 + 512 * 16), 512 * 2);
    2825                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2826                 :            : 
    2827                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, (void *)0xF000, 0, 18, io_done, NULL);
    2828                 :          3 :         CU_ASSERT(rc == 0);
    2829         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2830                 :            : 
    2831                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    2832                 :          3 :         stub_complete_io(2);
    2833         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2834                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2835                 :            : 
    2836                 :            :         /* Now set up a more complex, multi-vector command that needs to be split,
    2837                 :            :          * including splitting iovecs.
    2838                 :            :          * optimal_io_boundary < max_segment_size * max_num_segments
    2839                 :            :          */
    2840                 :          3 :         bdev->max_segment_size = 3 * 512;
    2841                 :          3 :         bdev->max_num_segments = 6;
    2842                 :          3 :         g_io_done = false;
    2843                 :            : 
    2844                 :          3 :         iov[0].iov_base = (void *)0x10000;
    2845                 :          3 :         iov[0].iov_len = 4 * 512;
    2846                 :          3 :         iov[1].iov_base = (void *)0x20000;
    2847                 :          3 :         iov[1].iov_len = 4 * 512;
    2848                 :          3 :         iov[2].iov_base = (void *)0x30000;
    2849                 :          3 :         iov[2].iov_len = 10 * 512;
    2850                 :            : 
    2851                 :            :         /* IO crossing the IO boundary requires split.
    2852                 :            :          * The 1st child IO segment size exceeds the max_segment_size and after
    2853                 :            :          * splitting segment_size, the num_segments exceeds max_num_segments.
    2854                 :            :          * So 1st child IO will be split to 2 child IOs.
    2855                 :            :          * Total 3 child IOs.
    2856                 :            :          */
    2857                 :            : 
    2858                 :            :         /* The first 2 IOs are in an IO boundary.
    2859                 :            :          * After splitting segment size the segment num exceeds.
    2860                 :            :          * So it splits to 2 child IOs.
    2861                 :            :          */
    2862                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 0, 14, 6);
    2863                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[0].iov_base, 512 * 3);
    2864                 :          3 :         ut_expected_io_set_iov(expected_io, 1, iov[0].iov_base + 512 * 3, 512);
    2865                 :          3 :         ut_expected_io_set_iov(expected_io, 2, iov[1].iov_base, 512 * 3);
    2866                 :          3 :         ut_expected_io_set_iov(expected_io, 3, iov[1].iov_base + 512 * 3, 512);
    2867                 :          3 :         ut_expected_io_set_iov(expected_io, 4, iov[2].iov_base, 512 * 3);
    2868                 :          3 :         ut_expected_io_set_iov(expected_io, 5, iov[2].iov_base + 512 * 3, 512 * 3);
    2869                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2870                 :            : 
    2871                 :            :         /* The 2nd child IO has the left segment entry */
    2872                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 14, 2, 1);
    2873                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[2].iov_base + 512 * 6, 512 * 2);
    2874                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2875                 :            : 
    2876                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 16, 2, 1);
    2877                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov[2].iov_base + 512 * 8, 512 * 2);
    2878                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2879                 :            : 
    2880                 :          3 :         rc = spdk_bdev_writev_blocks(desc, io_ch, iov, 3, 0, 18, io_done, NULL);
    2881                 :          3 :         CU_ASSERT(rc == 0);
    2882         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2883                 :            : 
    2884                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 3);
    2885                 :          3 :         stub_complete_io(3);
    2886         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2887                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2888                 :            : 
    2889                 :            :         /* A very complicated case. Each sg entry exceeds max_segment_size
    2890                 :            :          * and split on io boundary.
    2891                 :            :          * optimal_io_boundary < max_segment_size * max_num_segments
    2892                 :            :          */
    2893                 :          3 :         bdev->max_segment_size = 3 * 512;
    2894                 :          3 :         bdev->max_num_segments = SPDK_BDEV_IO_NUM_CHILD_IOV;
    2895                 :          3 :         g_io_done = false;
    2896                 :            : 
    2897         [ +  + ]:         63 :         for (i = 0; i < 20; i++) {
    2898                 :         60 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    2899                 :         60 :                 iov[i].iov_len = 512 * 4;
    2900                 :            :         }
    2901                 :            : 
    2902                 :            :         /* IO crossing the IO boundary requires split.
    2903                 :            :          * 80 block length can split 5 child IOs base on offset and IO boundary.
    2904                 :            :          * Each iov entry needs to be split to 2 entries because of max_segment_size
    2905                 :            :          * Total 5 child IOs.
    2906                 :            :          */
    2907                 :            : 
    2908                 :            :         /* 4 iov entries are in an IO boundary and each iov entry splits to 2.
    2909                 :            :          * So each child IO occupies 8 child iov entries.
    2910                 :            :          */
    2911                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 0, 16, 8);
    2912         [ +  + ]:         15 :         for (i = 0; i < 4; i++) {
    2913                 :         12 :                 int iovcnt = i * 2;
    2914                 :         12 :                 ut_expected_io_set_iov(expected_io, iovcnt, iov[i].iov_base, 512 * 3);
    2915                 :         12 :                 ut_expected_io_set_iov(expected_io, iovcnt + 1, iov[i].iov_base + 512 * 3, 512);
    2916                 :            :         }
    2917                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2918                 :            : 
    2919                 :            :         /* 2nd child IO and total 16 child iov entries of parent IO */
    2920                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 16, 16, 8);
    2921         [ +  + ]:         15 :         for (i = 4; i < 8; i++) {
    2922                 :         12 :                 int iovcnt = (i - 4) * 2;
    2923                 :         12 :                 ut_expected_io_set_iov(expected_io, iovcnt, iov[i].iov_base, 512 * 3);
    2924                 :         12 :                 ut_expected_io_set_iov(expected_io, iovcnt + 1, iov[i].iov_base + 512 * 3, 512);
    2925                 :            :         }
    2926                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2927                 :            : 
    2928                 :            :         /* 3rd child IO and total 24 child iov entries of parent IO */
    2929                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 32, 16, 8);
    2930         [ +  + ]:         15 :         for (i = 8; i < 12; i++) {
    2931                 :         12 :                 int iovcnt = (i - 8) * 2;
    2932                 :         12 :                 ut_expected_io_set_iov(expected_io, iovcnt, iov[i].iov_base, 512 * 3);
    2933                 :         12 :                 ut_expected_io_set_iov(expected_io, iovcnt + 1, iov[i].iov_base + 512 * 3, 512);
    2934                 :            :         }
    2935                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2936                 :            : 
    2937                 :            :         /* 4th child IO and total 32 child iov entries of parent IO */
    2938                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 48, 16, 8);
    2939         [ +  + ]:         15 :         for (i = 12; i < 16; i++) {
    2940                 :         12 :                 int iovcnt = (i - 12) * 2;
    2941                 :         12 :                 ut_expected_io_set_iov(expected_io, iovcnt, iov[i].iov_base, 512 * 3);
    2942                 :         12 :                 ut_expected_io_set_iov(expected_io, iovcnt + 1, iov[i].iov_base + 512 * 3, 512);
    2943                 :            :         }
    2944                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2945                 :            : 
    2946                 :            :         /* 5th child IO and because of the child iov entry it should be split
    2947                 :            :          * in next round.
    2948                 :            :          */
    2949                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 64, 16, 8);
    2950         [ +  + ]:         15 :         for (i = 16; i < 20; i++) {
    2951                 :         12 :                 int iovcnt = (i - 16) * 2;
    2952                 :         12 :                 ut_expected_io_set_iov(expected_io, iovcnt, iov[i].iov_base, 512 * 3);
    2953                 :         12 :                 ut_expected_io_set_iov(expected_io, iovcnt + 1, iov[i].iov_base + 512 * 3, 512);
    2954                 :            :         }
    2955                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    2956                 :            : 
    2957                 :          3 :         rc = spdk_bdev_writev_blocks(desc, io_ch, iov, 20, 0, 80, io_done, NULL);
    2958                 :          3 :         CU_ASSERT(rc == 0);
    2959         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2960                 :            : 
    2961                 :            :         /* First split round */
    2962                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 4);
    2963                 :          3 :         stub_complete_io(4);
    2964         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    2965                 :            : 
    2966                 :            :         /* Second split round */
    2967                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    2968                 :          3 :         stub_complete_io(1);
    2969         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    2970                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    2971                 :            : 
    2972                 :          3 :         spdk_put_io_channel(io_ch);
    2973                 :          3 :         spdk_bdev_close(desc);
    2974                 :          3 :         free_bdev(bdev);
    2975                 :          3 :         ut_fini_bdev();
    2976                 :          3 : }
    2977                 :            : 
    2978                 :            : static void
    2979                 :          3 : bdev_io_split_with_io_wait(void)
    2980                 :            : {
    2981                 :            :         struct spdk_bdev *bdev;
    2982                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    2983                 :            :         struct spdk_io_channel *io_ch;
    2984                 :            :         struct spdk_bdev_channel *channel;
    2985                 :            :         struct spdk_bdev_mgmt_channel *mgmt_ch;
    2986                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    2987                 :          3 :         struct iovec iov[3];
    2988                 :            :         struct ut_expected_io *expected_io;
    2989                 :            :         int rc;
    2990                 :            : 
    2991                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    2992                 :          3 :         bdev_opts.bdev_io_pool_size = 2;
    2993                 :          3 :         bdev_opts.bdev_io_cache_size = 1;
    2994                 :          3 :         ut_init_bdev(&bdev_opts);
    2995                 :            : 
    2996                 :          3 :         bdev = allocate_bdev("bdev0");
    2997                 :            : 
    2998                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    2999                 :          3 :         CU_ASSERT(rc == 0);
    3000                 :          3 :         CU_ASSERT(desc != NULL);
    3001                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    3002                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    3003                 :          3 :         CU_ASSERT(io_ch != NULL);
    3004                 :          3 :         channel = spdk_io_channel_get_ctx(io_ch);
    3005                 :          3 :         mgmt_ch = channel->shared_resource->mgmt_ch;
    3006                 :            : 
    3007                 :          3 :         bdev->optimal_io_boundary = 16;
    3008                 :          3 :         bdev->split_on_optimal_io_boundary = true;
    3009                 :            : 
    3010                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, NULL, 0, 1, io_done, NULL);
    3011                 :          3 :         CU_ASSERT(rc == 0);
    3012                 :            : 
    3013                 :            :         /* Now test that a single-vector command is split correctly.
    3014                 :            :          * Offset 14, length 8, payload 0xF000
    3015                 :            :          *  Child - Offset 14, length 2, payload 0xF000
    3016                 :            :          *  Child - Offset 16, length 6, payload 0xF000 + 2 * 512
    3017                 :            :          *
    3018                 :            :          * Set up the expected values before calling spdk_bdev_read_blocks
    3019                 :            :          */
    3020                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 14, 2, 1);
    3021                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0xF000, 2 * 512);
    3022                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3023                 :            : 
    3024                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 16, 6, 1);
    3025                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0xF000 + 2 * 512), 6 * 512);
    3026                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3027                 :            : 
    3028                 :            :         /* The following children will be submitted sequentially due to the capacity of
    3029                 :            :          * spdk_bdev_io.
    3030                 :            :          */
    3031                 :            : 
    3032                 :            :         /* The first child I/O will be queued to wait until an spdk_bdev_io becomes available */
    3033                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, (void *)0xF000, 14, 8, io_done, NULL);
    3034                 :          3 :         CU_ASSERT(rc == 0);
    3035                 :          3 :         CU_ASSERT(!TAILQ_EMPTY(&mgmt_ch->io_wait_queue));
    3036                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    3037                 :            : 
    3038                 :            :         /* Completing the first read I/O will submit the first child */
    3039                 :          3 :         stub_complete_io(1);
    3040                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&mgmt_ch->io_wait_queue));
    3041                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    3042                 :            : 
    3043                 :            :         /* Completing the first child will submit the second child */
    3044                 :          3 :         stub_complete_io(1);
    3045                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    3046                 :            : 
    3047                 :            :         /* Complete the second child I/O.  This should result in our callback getting
    3048                 :            :          * invoked since the parent I/O is now complete.
    3049                 :            :          */
    3050                 :          3 :         stub_complete_io(1);
    3051                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    3052                 :            : 
    3053                 :            :         /* Now set up a more complex, multi-vector command that needs to be split,
    3054                 :            :          *  including splitting iovecs.
    3055                 :            :          */
    3056                 :          3 :         iov[0].iov_base = (void *)0x10000;
    3057                 :          3 :         iov[0].iov_len = 512;
    3058                 :          3 :         iov[1].iov_base = (void *)0x20000;
    3059                 :          3 :         iov[1].iov_len = 20 * 512;
    3060                 :          3 :         iov[2].iov_base = (void *)0x30000;
    3061                 :          3 :         iov[2].iov_len = 11 * 512;
    3062                 :            : 
    3063                 :          3 :         g_io_done = false;
    3064                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 14, 2, 2);
    3065                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0x10000, 512);
    3066                 :          3 :         ut_expected_io_set_iov(expected_io, 1, (void *)0x20000, 512);
    3067                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3068                 :            : 
    3069                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 16, 16, 1);
    3070                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0x20000 + 512), 16 * 512);
    3071                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3072                 :            : 
    3073                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 32, 14, 2);
    3074                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0x20000 + 17 * 512), 3 * 512);
    3075                 :          3 :         ut_expected_io_set_iov(expected_io, 1, (void *)0x30000, 11 * 512);
    3076                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3077                 :            : 
    3078                 :          3 :         rc = spdk_bdev_writev_blocks(desc, io_ch, iov, 3, 14, 32, io_done, NULL);
    3079                 :          3 :         CU_ASSERT(rc == 0);
    3080         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    3081                 :            : 
    3082                 :            :         /* The following children will be submitted sequentially due to the capacity of
    3083                 :            :          * spdk_bdev_io.
    3084                 :            :          */
    3085                 :            : 
    3086                 :            :         /* Completing the first child will submit the second child */
    3087                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    3088                 :          3 :         stub_complete_io(1);
    3089         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    3090                 :            : 
    3091                 :            :         /* Completing the second child will submit the third child */
    3092                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    3093                 :          3 :         stub_complete_io(1);
    3094         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    3095                 :            : 
    3096                 :            :         /* Completing the third child will result in our callback getting invoked
    3097                 :            :          * since the parent I/O is now complete.
    3098                 :            :          */
    3099                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    3100                 :          3 :         stub_complete_io(1);
    3101         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    3102                 :            : 
    3103                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&g_bdev_ut_channel->expected_io));
    3104                 :            : 
    3105                 :          3 :         spdk_put_io_channel(io_ch);
    3106                 :          3 :         spdk_bdev_close(desc);
    3107                 :          3 :         free_bdev(bdev);
    3108                 :          3 :         ut_fini_bdev();
    3109                 :          3 : }
    3110                 :            : 
    3111                 :            : static void
    3112                 :          3 : bdev_io_write_unit_split_test(void)
    3113                 :            : {
    3114                 :            :         struct spdk_bdev *bdev;
    3115                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    3116                 :            :         struct spdk_io_channel *io_ch;
    3117                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    3118                 :          3 :         struct iovec iov[SPDK_BDEV_IO_NUM_CHILD_IOV * 4];
    3119                 :            :         struct ut_expected_io *expected_io;
    3120                 :            :         uint64_t i;
    3121                 :            :         int rc;
    3122                 :            : 
    3123                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    3124                 :          3 :         bdev_opts.bdev_io_pool_size = 512;
    3125                 :          3 :         bdev_opts.bdev_io_cache_size = 64;
    3126                 :          3 :         ut_init_bdev(&bdev_opts);
    3127                 :            : 
    3128                 :          3 :         bdev = allocate_bdev("bdev0");
    3129                 :            : 
    3130                 :          3 :         rc = spdk_bdev_open_ext(bdev->name, true, bdev_ut_event_cb, NULL, &desc);
    3131                 :          3 :         CU_ASSERT(rc == 0);
    3132         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    3133                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    3134                 :          3 :         CU_ASSERT(io_ch != NULL);
    3135                 :            : 
    3136                 :            :         /* Write I/O 2x larger than write_unit_size should get split into 2 I/Os */
    3137                 :          3 :         bdev->write_unit_size = 32;
    3138                 :          3 :         bdev->split_on_write_unit = true;
    3139                 :          3 :         g_io_done = false;
    3140                 :            : 
    3141                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 0, 32, 1);
    3142                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0xF000, 32 * 512);
    3143                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3144                 :            : 
    3145                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 32, 32, 1);
    3146                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0xF000 + 32 * 512), 32 * 512);
    3147                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3148                 :            : 
    3149                 :          3 :         rc = spdk_bdev_write_blocks(desc, io_ch, (void *)0xF000, 0, 64, io_done, NULL);
    3150                 :          3 :         CU_ASSERT(rc == 0);
    3151         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    3152                 :            : 
    3153                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    3154                 :          3 :         stub_complete_io(2);
    3155         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    3156                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    3157                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    3158                 :            : 
    3159                 :            :         /* Same as above but with optimal_io_boundary < write_unit_size - the I/O should be split
    3160                 :            :          * based on write_unit_size, not optimal_io_boundary */
    3161                 :          3 :         bdev->split_on_optimal_io_boundary = true;
    3162                 :          3 :         bdev->optimal_io_boundary = 16;
    3163                 :          3 :         g_io_done = false;
    3164                 :            : 
    3165                 :          3 :         rc = spdk_bdev_write_blocks(desc, io_ch, (void *)0xF000, 0, 64, io_done, NULL);
    3166                 :          3 :         CU_ASSERT(rc == 0);
    3167         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    3168                 :            : 
    3169                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    3170                 :          3 :         stub_complete_io(2);
    3171         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    3172                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    3173                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    3174                 :            : 
    3175                 :            :         /* Write I/O should fail if it is smaller than write_unit_size */
    3176                 :          3 :         g_io_done = false;
    3177                 :            : 
    3178                 :          3 :         rc = spdk_bdev_write_blocks(desc, io_ch, (void *)0xF000, 0, 31, io_done, NULL);
    3179                 :          3 :         CU_ASSERT(rc == 0);
    3180         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    3181                 :            : 
    3182                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    3183                 :          3 :         poll_threads();
    3184         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    3185                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    3186                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_FAILED);
    3187                 :            : 
    3188                 :            :         /* Same for I/O not aligned to write_unit_size */
    3189                 :          3 :         g_io_done = false;
    3190                 :            : 
    3191                 :          3 :         rc = spdk_bdev_write_blocks(desc, io_ch, (void *)0xF000, 1, 32, io_done, NULL);
    3192                 :          3 :         CU_ASSERT(rc == 0);
    3193         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    3194                 :            : 
    3195                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    3196                 :          3 :         poll_threads();
    3197         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    3198                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    3199                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_FAILED);
    3200                 :            : 
    3201                 :            :         /* Write should fail if it needs to be split but there are not enough iovs to submit
    3202                 :            :          * an entire write unit */
    3203                 :          3 :         bdev->write_unit_size = SPDK_COUNTOF(iov) / 2;
    3204                 :          3 :         g_io_done = false;
    3205                 :            : 
    3206         [ +  + ]:        387 :         for (i = 0; i < SPDK_COUNTOF(iov); i++) {
    3207                 :        384 :                 iov[i].iov_base = (void *)(0x1000 + 512 * i);
    3208                 :        384 :                 iov[i].iov_len = 512;
    3209                 :            :         }
    3210                 :            : 
    3211                 :          3 :         rc = spdk_bdev_writev_blocks(desc, io_ch, iov, SPDK_COUNTOF(iov), 0, SPDK_COUNTOF(iov),
    3212                 :            :                                      io_done, NULL);
    3213                 :          3 :         CU_ASSERT(rc == 0);
    3214         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    3215                 :            : 
    3216                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    3217                 :          3 :         poll_threads();
    3218         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    3219                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    3220                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_FAILED);
    3221                 :            : 
    3222                 :          3 :         spdk_put_io_channel(io_ch);
    3223                 :          3 :         spdk_bdev_close(desc);
    3224                 :          3 :         free_bdev(bdev);
    3225                 :          3 :         ut_fini_bdev();
    3226                 :          3 : }
    3227                 :            : 
    3228                 :            : static void
    3229                 :          3 : bdev_io_alignment(void)
    3230                 :            : {
    3231                 :            :         struct spdk_bdev *bdev;
    3232                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    3233                 :            :         struct spdk_io_channel *io_ch;
    3234                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    3235                 :            :         int rc;
    3236                 :          3 :         void *buf = NULL;
    3237                 :          3 :         struct iovec iovs[2];
    3238                 :            :         int iovcnt;
    3239                 :            :         uint64_t alignment;
    3240                 :            : 
    3241                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    3242                 :          3 :         bdev_opts.bdev_io_pool_size = 20;
    3243                 :          3 :         bdev_opts.bdev_io_cache_size = 2;
    3244                 :          3 :         ut_init_bdev(&bdev_opts);
    3245                 :            : 
    3246                 :          3 :         fn_table.submit_request = stub_submit_request_get_buf;
    3247                 :          3 :         bdev = allocate_bdev("bdev0");
    3248                 :            : 
    3249                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    3250                 :          3 :         CU_ASSERT(rc == 0);
    3251                 :          3 :         CU_ASSERT(desc != NULL);
    3252                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    3253                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    3254                 :          3 :         CU_ASSERT(io_ch != NULL);
    3255                 :            : 
    3256                 :            :         /* Create aligned buffer */
    3257                 :          3 :         rc = posix_memalign(&buf, 4096, 8192);
    3258         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(rc == 0);
    3259                 :            : 
    3260                 :            :         /* Pass aligned single buffer with no alignment required */
    3261                 :          3 :         alignment = 1;
    3262                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3263                 :            : 
    3264                 :          3 :         rc = spdk_bdev_write_blocks(desc, io_ch, buf, 0, 1, io_done, NULL);
    3265                 :          3 :         CU_ASSERT(rc == 0);
    3266                 :          3 :         stub_complete_io(1);
    3267                 :          3 :         CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
    3268                 :            :                                     alignment));
    3269                 :            : 
    3270                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, buf, 0, 1, io_done, NULL);
    3271                 :          3 :         CU_ASSERT(rc == 0);
    3272                 :          3 :         stub_complete_io(1);
    3273                 :          3 :         CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
    3274                 :            :                                     alignment));
    3275                 :            : 
    3276                 :            :         /* Pass unaligned single buffer with no alignment required */
    3277                 :          3 :         alignment = 1;
    3278                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3279                 :            : 
    3280                 :          3 :         rc = spdk_bdev_write_blocks(desc, io_ch, buf + 4, 0, 1, io_done, NULL);
    3281                 :          3 :         CU_ASSERT(rc == 0);
    3282                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3283                 :          3 :         CU_ASSERT(g_bdev_io->u.bdev.iovs[0].iov_base == buf + 4);
    3284                 :          3 :         stub_complete_io(1);
    3285                 :            : 
    3286                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, buf + 4, 0, 1, io_done, NULL);
    3287                 :          3 :         CU_ASSERT(rc == 0);
    3288                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3289                 :          3 :         CU_ASSERT(g_bdev_io->u.bdev.iovs[0].iov_base == buf + 4);
    3290                 :          3 :         stub_complete_io(1);
    3291                 :            : 
    3292                 :            :         /* Pass unaligned single buffer with 512 alignment required */
    3293                 :          3 :         alignment = 512;
    3294                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3295                 :            : 
    3296                 :          3 :         rc = spdk_bdev_write_blocks(desc, io_ch, buf + 4, 0, 1, io_done, NULL);
    3297                 :          3 :         CU_ASSERT(rc == 0);
    3298                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 1);
    3299                 :          3 :         CU_ASSERT(g_bdev_io->u.bdev.iovs == &g_bdev_io->internal.bounce_iov);
    3300                 :          3 :         CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
    3301                 :            :                                     alignment));
    3302                 :          3 :         stub_complete_io(1);
    3303                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3304                 :            : 
    3305                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, buf + 4, 0, 1, io_done, NULL);
    3306                 :          3 :         CU_ASSERT(rc == 0);
    3307                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 1);
    3308                 :          3 :         CU_ASSERT(g_bdev_io->u.bdev.iovs == &g_bdev_io->internal.bounce_iov);
    3309                 :          3 :         CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
    3310                 :            :                                     alignment));
    3311                 :          3 :         stub_complete_io(1);
    3312                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3313                 :            : 
    3314                 :            :         /* Pass unaligned single buffer with 4096 alignment required */
    3315                 :          3 :         alignment = 4096;
    3316                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3317                 :            : 
    3318                 :          3 :         rc = spdk_bdev_write_blocks(desc, io_ch, buf + 8, 0, 1, io_done, NULL);
    3319                 :          3 :         CU_ASSERT(rc == 0);
    3320                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 1);
    3321                 :          3 :         CU_ASSERT(g_bdev_io->u.bdev.iovs == &g_bdev_io->internal.bounce_iov);
    3322                 :          3 :         CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
    3323                 :            :                                     alignment));
    3324                 :          3 :         stub_complete_io(1);
    3325                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3326                 :            : 
    3327                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, buf + 8, 0, 1, io_done, NULL);
    3328                 :          3 :         CU_ASSERT(rc == 0);
    3329                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 1);
    3330                 :          3 :         CU_ASSERT(g_bdev_io->u.bdev.iovs == &g_bdev_io->internal.bounce_iov);
    3331                 :          3 :         CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
    3332                 :            :                                     alignment));
    3333                 :          3 :         stub_complete_io(1);
    3334                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3335                 :            : 
    3336                 :            :         /* Pass aligned iovs with no alignment required */
    3337                 :          3 :         alignment = 1;
    3338                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3339                 :            : 
    3340                 :          3 :         iovcnt = 1;
    3341                 :          3 :         iovs[0].iov_base = buf;
    3342                 :          3 :         iovs[0].iov_len = 512;
    3343                 :            : 
    3344                 :          3 :         rc = spdk_bdev_writev(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
    3345                 :          3 :         CU_ASSERT(rc == 0);
    3346                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3347                 :          3 :         stub_complete_io(1);
    3348                 :          3 :         CU_ASSERT(g_bdev_io->u.bdev.iovs[0].iov_base == iovs[0].iov_base);
    3349                 :            : 
    3350                 :          3 :         rc = spdk_bdev_readv(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
    3351                 :          3 :         CU_ASSERT(rc == 0);
    3352                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3353                 :          3 :         stub_complete_io(1);
    3354                 :          3 :         CU_ASSERT(g_bdev_io->u.bdev.iovs[0].iov_base == iovs[0].iov_base);
    3355                 :            : 
    3356                 :            :         /* Pass unaligned iovs with no alignment required */
    3357                 :          3 :         alignment = 1;
    3358                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3359                 :            : 
    3360                 :          3 :         iovcnt = 2;
    3361                 :          3 :         iovs[0].iov_base = buf + 16;
    3362                 :          3 :         iovs[0].iov_len = 256;
    3363                 :          3 :         iovs[1].iov_base = buf + 16 + 256 + 32;
    3364                 :          3 :         iovs[1].iov_len = 256;
    3365                 :            : 
    3366                 :          3 :         rc = spdk_bdev_writev(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
    3367                 :          3 :         CU_ASSERT(rc == 0);
    3368                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3369                 :          3 :         stub_complete_io(1);
    3370                 :          3 :         CU_ASSERT(g_bdev_io->u.bdev.iovs[0].iov_base == iovs[0].iov_base);
    3371                 :            : 
    3372                 :          3 :         rc = spdk_bdev_readv(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
    3373                 :          3 :         CU_ASSERT(rc == 0);
    3374                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3375                 :          3 :         stub_complete_io(1);
    3376                 :          3 :         CU_ASSERT(g_bdev_io->u.bdev.iovs[0].iov_base == iovs[0].iov_base);
    3377                 :            : 
    3378                 :            :         /* Pass unaligned iov with 2048 alignment required */
    3379                 :          3 :         alignment = 2048;
    3380                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3381                 :            : 
    3382                 :          3 :         iovcnt = 2;
    3383                 :          3 :         iovs[0].iov_base = buf + 16;
    3384                 :          3 :         iovs[0].iov_len = 256;
    3385                 :          3 :         iovs[1].iov_base = buf + 16 + 256 + 32;
    3386                 :          3 :         iovs[1].iov_len = 256;
    3387                 :            : 
    3388                 :          3 :         rc = spdk_bdev_writev(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
    3389                 :          3 :         CU_ASSERT(rc == 0);
    3390                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == iovcnt);
    3391                 :          3 :         CU_ASSERT(g_bdev_io->u.bdev.iovs == &g_bdev_io->internal.bounce_iov);
    3392                 :          3 :         CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
    3393                 :            :                                     alignment));
    3394                 :          3 :         stub_complete_io(1);
    3395                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3396                 :            : 
    3397                 :          3 :         rc = spdk_bdev_readv(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
    3398                 :          3 :         CU_ASSERT(rc == 0);
    3399                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == iovcnt);
    3400                 :          3 :         CU_ASSERT(g_bdev_io->u.bdev.iovs == &g_bdev_io->internal.bounce_iov);
    3401                 :          3 :         CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
    3402                 :            :                                     alignment));
    3403                 :          3 :         stub_complete_io(1);
    3404                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3405                 :            : 
    3406                 :            :         /* Pass iov without allocated buffer without alignment required */
    3407                 :          3 :         alignment = 1;
    3408                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3409                 :            : 
    3410                 :          3 :         iovcnt = 1;
    3411                 :          3 :         iovs[0].iov_base = NULL;
    3412                 :          3 :         iovs[0].iov_len = 0;
    3413                 :            : 
    3414                 :          3 :         rc = spdk_bdev_readv(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
    3415                 :          3 :         CU_ASSERT(rc == 0);
    3416                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3417                 :          3 :         CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
    3418                 :            :                                     alignment));
    3419                 :          3 :         stub_complete_io(1);
    3420                 :            : 
    3421                 :            :         /* Pass iov without allocated buffer with 1024 alignment required */
    3422                 :          3 :         alignment = 1024;
    3423                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3424                 :            : 
    3425                 :          3 :         iovcnt = 1;
    3426                 :          3 :         iovs[0].iov_base = NULL;
    3427                 :          3 :         iovs[0].iov_len = 0;
    3428                 :            : 
    3429                 :          3 :         rc = spdk_bdev_readv(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
    3430                 :          3 :         CU_ASSERT(rc == 0);
    3431                 :          3 :         CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
    3432                 :          3 :         CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
    3433                 :            :                                     alignment));
    3434                 :          3 :         stub_complete_io(1);
    3435                 :            : 
    3436                 :          3 :         spdk_put_io_channel(io_ch);
    3437                 :          3 :         spdk_bdev_close(desc);
    3438                 :          3 :         free_bdev(bdev);
    3439                 :          3 :         fn_table.submit_request = stub_submit_request;
    3440                 :          3 :         ut_fini_bdev();
    3441                 :            : 
    3442                 :          3 :         free(buf);
    3443                 :          3 : }
    3444                 :            : 
    3445                 :            : static void
    3446                 :          3 : bdev_io_alignment_with_boundary(void)
    3447                 :            : {
    3448                 :            :         struct spdk_bdev *bdev;
    3449                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    3450                 :            :         struct spdk_io_channel *io_ch;
    3451                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    3452                 :            :         int rc;
    3453                 :          3 :         void *buf = NULL;
    3454                 :          3 :         struct iovec iovs[2];
    3455                 :            :         int iovcnt;
    3456                 :            :         uint64_t alignment;
    3457                 :            : 
    3458                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    3459                 :          3 :         bdev_opts.bdev_io_pool_size = 20;
    3460                 :          3 :         bdev_opts.bdev_io_cache_size = 2;
    3461                 :          3 :         bdev_opts.opts_size = sizeof(bdev_opts);
    3462                 :          3 :         ut_init_bdev(&bdev_opts);
    3463                 :            : 
    3464                 :          3 :         fn_table.submit_request = stub_submit_request_get_buf;
    3465                 :          3 :         bdev = allocate_bdev("bdev0");
    3466                 :            : 
    3467                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    3468                 :          3 :         CU_ASSERT(rc == 0);
    3469                 :          3 :         CU_ASSERT(desc != NULL);
    3470                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    3471                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    3472                 :          3 :         CU_ASSERT(io_ch != NULL);
    3473                 :            : 
    3474                 :            :         /* Create aligned buffer */
    3475                 :          3 :         rc = posix_memalign(&buf, 4096, 131072);
    3476         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(rc == 0);
    3477                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    3478                 :            : 
    3479                 :            :         /* 512 * 3 with 2 IO boundary, allocate small data buffer from bdev layer */
    3480                 :          3 :         alignment = 512;
    3481                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3482                 :          3 :         bdev->optimal_io_boundary = 2;
    3483                 :          3 :         bdev->split_on_optimal_io_boundary = true;
    3484                 :            : 
    3485                 :          3 :         iovcnt = 1;
    3486                 :          3 :         iovs[0].iov_base = NULL;
    3487                 :          3 :         iovs[0].iov_len = 512 * 3;
    3488                 :            : 
    3489                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iovs, iovcnt, 1, 3, io_done, NULL);
    3490                 :          3 :         CU_ASSERT(rc == 0);
    3491                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    3492                 :          3 :         stub_complete_io(2);
    3493                 :            : 
    3494                 :            :         /* 8KiB with 16 IO boundary, allocate large data buffer from bdev layer */
    3495                 :          3 :         alignment = 512;
    3496                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3497                 :          3 :         bdev->optimal_io_boundary = 16;
    3498                 :          3 :         bdev->split_on_optimal_io_boundary = true;
    3499                 :            : 
    3500                 :          3 :         iovcnt = 1;
    3501                 :          3 :         iovs[0].iov_base = NULL;
    3502                 :          3 :         iovs[0].iov_len = 512 * 16;
    3503                 :            : 
    3504                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iovs, iovcnt, 1, 16, io_done, NULL);
    3505                 :          3 :         CU_ASSERT(rc == 0);
    3506                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    3507                 :          3 :         stub_complete_io(2);
    3508                 :            : 
    3509                 :            :         /* 512 * 160 with 128 IO boundary, 63.5KiB + 16.5KiB for the two children requests */
    3510                 :          3 :         alignment = 512;
    3511                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3512                 :          3 :         bdev->optimal_io_boundary = 128;
    3513                 :          3 :         bdev->split_on_optimal_io_boundary = true;
    3514                 :            : 
    3515                 :          3 :         iovcnt = 1;
    3516                 :          3 :         iovs[0].iov_base = buf + 16;
    3517                 :          3 :         iovs[0].iov_len = 512 * 160;
    3518                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iovs, iovcnt, 1, 160, io_done, NULL);
    3519                 :          3 :         CU_ASSERT(rc == 0);
    3520                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    3521                 :          3 :         stub_complete_io(2);
    3522                 :            : 
    3523                 :            :         /* 512 * 3 with 2 IO boundary */
    3524                 :          3 :         alignment = 512;
    3525                 :          3 :         bdev->required_alignment = spdk_u32log2(alignment);
    3526                 :          3 :         bdev->optimal_io_boundary = 2;
    3527                 :          3 :         bdev->split_on_optimal_io_boundary = true;
    3528                 :            : 
    3529                 :          3 :         iovcnt = 2;
    3530                 :          3 :         iovs[0].iov_base = buf + 16;
    3531                 :          3 :         iovs[0].iov_len = 512;
    3532                 :          3 :         iovs[1].iov_base = buf + 16 + 512 + 32;
    3533                 :          3 :         iovs[1].iov_len = 1024;
    3534                 :            : 
    3535                 :          3 :         rc = spdk_bdev_writev_blocks(desc, io_ch, iovs, iovcnt, 1, 3, io_done, NULL);
    3536                 :          3 :         CU_ASSERT(rc == 0);
    3537                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    3538                 :          3 :         stub_complete_io(2);
    3539                 :            : 
    3540                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iovs, iovcnt, 1, 3, io_done, NULL);
    3541                 :          3 :         CU_ASSERT(rc == 0);
    3542                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    3543                 :          3 :         stub_complete_io(2);
    3544                 :            : 
    3545                 :            :         /* 512 * 64 with 32 IO boundary */
    3546                 :          3 :         bdev->optimal_io_boundary = 32;
    3547                 :          3 :         iovcnt = 2;
    3548                 :          3 :         iovs[0].iov_base = buf + 16;
    3549                 :          3 :         iovs[0].iov_len = 16384;
    3550                 :          3 :         iovs[1].iov_base = buf + 16 + 16384 + 32;
    3551                 :          3 :         iovs[1].iov_len = 16384;
    3552                 :            : 
    3553                 :          3 :         rc = spdk_bdev_writev_blocks(desc, io_ch, iovs, iovcnt, 1, 64, io_done, NULL);
    3554                 :          3 :         CU_ASSERT(rc == 0);
    3555                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 3);
    3556                 :          3 :         stub_complete_io(3);
    3557                 :            : 
    3558                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iovs, iovcnt, 1, 64, io_done, NULL);
    3559                 :          3 :         CU_ASSERT(rc == 0);
    3560                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 3);
    3561                 :          3 :         stub_complete_io(3);
    3562                 :            : 
    3563                 :            :         /* 512 * 160 with 32 IO boundary */
    3564                 :          3 :         iovcnt = 1;
    3565                 :          3 :         iovs[0].iov_base = buf + 16;
    3566                 :          3 :         iovs[0].iov_len = 16384 + 65536;
    3567                 :            : 
    3568                 :          3 :         rc = spdk_bdev_writev_blocks(desc, io_ch, iovs, iovcnt, 1, 160, io_done, NULL);
    3569                 :          3 :         CU_ASSERT(rc == 0);
    3570                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 6);
    3571                 :          3 :         stub_complete_io(6);
    3572                 :            : 
    3573                 :          3 :         spdk_put_io_channel(io_ch);
    3574                 :          3 :         spdk_bdev_close(desc);
    3575                 :          3 :         free_bdev(bdev);
    3576                 :          3 :         fn_table.submit_request = stub_submit_request;
    3577                 :          3 :         ut_fini_bdev();
    3578                 :            : 
    3579                 :          3 :         free(buf);
    3580                 :          3 : }
    3581                 :            : 
    3582                 :            : static void
    3583                 :          6 : histogram_status_cb(void *cb_arg, int status)
    3584                 :            : {
    3585                 :          6 :         g_status = status;
    3586                 :          6 : }
    3587                 :            : 
    3588                 :            : static void
    3589                 :          9 : histogram_data_cb(void *cb_arg, int status, struct spdk_histogram_data *histogram)
    3590                 :            : {
    3591                 :          9 :         g_status = status;
    3592                 :          9 :         g_histogram = histogram;
    3593                 :          9 : }
    3594                 :            : 
    3595                 :            : static void
    3596                 :      66816 : histogram_io_count(void *ctx, uint64_t start, uint64_t end, uint64_t count,
    3597                 :            :                    uint64_t total, uint64_t so_far)
    3598                 :            : {
    3599                 :      66816 :         g_count += count;
    3600                 :      66816 : }
    3601                 :            : 
    3602                 :            : static void
    3603                 :          6 : histogram_channel_data_cb(void *cb_arg, int status, struct spdk_histogram_data *histogram)
    3604                 :            : {
    3605                 :          6 :         spdk_histogram_data_fn cb_fn = cb_arg;
    3606                 :            : 
    3607                 :          6 :         g_status = status;
    3608                 :            : 
    3609         [ +  + ]:          6 :         if (status == 0) {
    3610                 :          3 :                 spdk_histogram_data_iterate(histogram, cb_fn, NULL);
    3611                 :            :         }
    3612                 :          6 : }
    3613                 :            : 
    3614                 :            : static void
    3615                 :          3 : bdev_histograms(void)
    3616                 :            : {
    3617                 :            :         struct spdk_bdev *bdev;
    3618                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    3619                 :            :         struct spdk_io_channel *ch;
    3620                 :            :         struct spdk_histogram_data *histogram;
    3621                 :          3 :         uint8_t buf[4096];
    3622                 :            :         int rc;
    3623                 :            : 
    3624                 :          3 :         ut_init_bdev(NULL);
    3625                 :            : 
    3626                 :          3 :         bdev = allocate_bdev("bdev");
    3627                 :            : 
    3628                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc);
    3629                 :          3 :         CU_ASSERT(rc == 0);
    3630                 :          3 :         CU_ASSERT(desc != NULL);
    3631                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    3632                 :            : 
    3633                 :          3 :         ch = spdk_bdev_get_io_channel(desc);
    3634                 :          3 :         CU_ASSERT(ch != NULL);
    3635                 :            : 
    3636                 :            :         /* Enable histogram */
    3637                 :          3 :         g_status = -1;
    3638                 :          3 :         spdk_bdev_histogram_enable(bdev, histogram_status_cb, NULL, true);
    3639                 :          3 :         poll_threads();
    3640                 :          3 :         CU_ASSERT(g_status == 0);
    3641         [ -  + ]:          3 :         CU_ASSERT(bdev->internal.histogram_enabled == true);
    3642                 :            : 
    3643                 :            :         /* Allocate histogram */
    3644                 :          3 :         histogram = spdk_histogram_data_alloc();
    3645         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(histogram != NULL);
    3646                 :            : 
    3647                 :            :         /* Check if histogram is zeroed */
    3648                 :          3 :         spdk_bdev_histogram_get(bdev, histogram, histogram_data_cb, NULL);
    3649                 :          3 :         poll_threads();
    3650                 :          3 :         CU_ASSERT(g_status == 0);
    3651         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(g_histogram != NULL);
    3652                 :            : 
    3653                 :          3 :         g_count = 0;
    3654                 :          3 :         spdk_histogram_data_iterate(g_histogram, histogram_io_count, NULL);
    3655                 :            : 
    3656                 :          3 :         CU_ASSERT(g_count == 0);
    3657                 :            : 
    3658                 :          3 :         rc = spdk_bdev_write_blocks(desc, ch, buf, 0, 1, io_done, NULL);
    3659                 :          3 :         CU_ASSERT(rc == 0);
    3660                 :            : 
    3661                 :          3 :         spdk_delay_us(10);
    3662                 :          3 :         stub_complete_io(1);
    3663                 :          3 :         poll_threads();
    3664                 :            : 
    3665                 :          3 :         rc = spdk_bdev_read_blocks(desc, ch, buf, 0, 1, io_done, NULL);
    3666                 :          3 :         CU_ASSERT(rc == 0);
    3667                 :            : 
    3668                 :          3 :         spdk_delay_us(10);
    3669                 :          3 :         stub_complete_io(1);
    3670                 :          3 :         poll_threads();
    3671                 :            : 
    3672                 :            :         /* Check if histogram gathered data from all I/O channels */
    3673                 :          3 :         g_histogram = NULL;
    3674                 :          3 :         spdk_bdev_histogram_get(bdev, histogram, histogram_data_cb, NULL);
    3675                 :          3 :         poll_threads();
    3676                 :          3 :         CU_ASSERT(g_status == 0);
    3677         [ -  + ]:          3 :         CU_ASSERT(bdev->internal.histogram_enabled == true);
    3678         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(g_histogram != NULL);
    3679                 :            : 
    3680                 :          3 :         g_count = 0;
    3681                 :          3 :         spdk_histogram_data_iterate(g_histogram, histogram_io_count, NULL);
    3682                 :          3 :         CU_ASSERT(g_count == 2);
    3683                 :            : 
    3684                 :          3 :         g_count = 0;
    3685                 :          3 :         spdk_bdev_channel_get_histogram(ch, histogram_channel_data_cb, histogram_io_count);
    3686                 :          3 :         CU_ASSERT(g_status == 0);
    3687                 :          3 :         CU_ASSERT(g_count == 2);
    3688                 :            : 
    3689                 :            :         /* Disable histogram */
    3690                 :          3 :         spdk_bdev_histogram_enable(bdev, histogram_status_cb, NULL, false);
    3691                 :          3 :         poll_threads();
    3692                 :          3 :         CU_ASSERT(g_status == 0);
    3693         [ -  + ]:          3 :         CU_ASSERT(bdev->internal.histogram_enabled == false);
    3694                 :            : 
    3695                 :            :         /* Try to run histogram commands on disabled bdev */
    3696                 :          3 :         spdk_bdev_histogram_get(bdev, histogram, histogram_data_cb, NULL);
    3697                 :          3 :         poll_threads();
    3698                 :          3 :         CU_ASSERT(g_status == -EFAULT);
    3699                 :            : 
    3700                 :          3 :         spdk_bdev_channel_get_histogram(ch, histogram_channel_data_cb, NULL);
    3701                 :          3 :         CU_ASSERT(g_status == -EFAULT);
    3702                 :            : 
    3703                 :          3 :         spdk_histogram_data_free(histogram);
    3704                 :          3 :         spdk_put_io_channel(ch);
    3705                 :          3 :         spdk_bdev_close(desc);
    3706                 :          3 :         free_bdev(bdev);
    3707                 :          3 :         ut_fini_bdev();
    3708                 :          3 : }
    3709                 :            : 
    3710                 :            : static void
    3711                 :          6 : _bdev_compare(bool emulated)
    3712                 :            : {
    3713                 :            :         struct spdk_bdev *bdev;
    3714                 :          6 :         struct spdk_bdev_desc *desc = NULL;
    3715                 :            :         struct spdk_io_channel *ioch;
    3716                 :            :         struct ut_expected_io *expected_io;
    3717                 :            :         uint64_t offset, num_blocks;
    3718                 :            :         uint32_t num_completed;
    3719                 :          6 :         char aa_buf[512];
    3720                 :          6 :         char bb_buf[512];
    3721                 :          6 :         struct iovec compare_iov;
    3722                 :            :         uint8_t expected_io_type;
    3723                 :            :         int rc;
    3724                 :            : 
    3725         [ +  + ]:          6 :         if (emulated) {
    3726                 :          3 :                 expected_io_type = SPDK_BDEV_IO_TYPE_READ;
    3727                 :            :         } else {
    3728                 :          3 :                 expected_io_type = SPDK_BDEV_IO_TYPE_COMPARE;
    3729                 :            :         }
    3730                 :            : 
    3731                 :          6 :         memset(aa_buf, 0xaa, sizeof(aa_buf));
    3732                 :          6 :         memset(bb_buf, 0xbb, sizeof(bb_buf));
    3733                 :            : 
    3734                 :          6 :         g_io_types_supported[SPDK_BDEV_IO_TYPE_COMPARE] = !emulated;
    3735                 :            : 
    3736                 :          6 :         ut_init_bdev(NULL);
    3737                 :          6 :         fn_table.submit_request = stub_submit_request_get_buf;
    3738                 :          6 :         bdev = allocate_bdev("bdev");
    3739                 :            : 
    3740                 :          6 :         rc = spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc);
    3741                 :          6 :         CU_ASSERT_EQUAL(rc, 0);
    3742         [ -  + ]:          6 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    3743                 :          6 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    3744                 :          6 :         ioch = spdk_bdev_get_io_channel(desc);
    3745         [ -  + ]:          6 :         SPDK_CU_ASSERT_FATAL(ioch != NULL);
    3746                 :            : 
    3747                 :          6 :         fn_table.submit_request = stub_submit_request_get_buf;
    3748                 :          6 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    3749                 :            : 
    3750                 :          6 :         offset = 50;
    3751                 :          6 :         num_blocks = 1;
    3752                 :          6 :         compare_iov.iov_base = aa_buf;
    3753                 :          6 :         compare_iov.iov_len = sizeof(aa_buf);
    3754                 :            : 
    3755                 :            :         /* 1. successful comparev */
    3756                 :          6 :         expected_io = ut_alloc_expected_io(expected_io_type, offset, num_blocks, 0);
    3757                 :          6 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3758                 :            : 
    3759                 :          6 :         g_io_done = false;
    3760                 :          6 :         g_compare_read_buf = aa_buf;
    3761                 :          6 :         g_compare_read_buf_len = sizeof(aa_buf);
    3762                 :          6 :         rc = spdk_bdev_comparev_blocks(desc, ioch, &compare_iov, 1, offset, num_blocks, io_done, NULL);
    3763                 :          6 :         CU_ASSERT_EQUAL(rc, 0);
    3764                 :          6 :         num_completed = stub_complete_io(1);
    3765                 :          6 :         CU_ASSERT_EQUAL(num_completed, 1);
    3766         [ -  + ]:          6 :         CU_ASSERT(g_io_done == true);
    3767                 :          6 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    3768                 :            : 
    3769                 :            :         /* 2. miscompare comparev */
    3770                 :          6 :         expected_io = ut_alloc_expected_io(expected_io_type, offset, num_blocks, 0);
    3771                 :          6 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3772                 :            : 
    3773                 :          6 :         g_io_done = false;
    3774                 :          6 :         g_compare_read_buf = bb_buf;
    3775                 :          6 :         g_compare_read_buf_len = sizeof(bb_buf);
    3776                 :          6 :         rc = spdk_bdev_comparev_blocks(desc, ioch, &compare_iov, 1, offset, num_blocks, io_done, NULL);
    3777                 :          6 :         CU_ASSERT_EQUAL(rc, 0);
    3778                 :          6 :         num_completed = stub_complete_io(1);
    3779                 :          6 :         CU_ASSERT_EQUAL(num_completed, 1);
    3780         [ -  + ]:          6 :         CU_ASSERT(g_io_done == true);
    3781                 :          6 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_MISCOMPARE);
    3782                 :            : 
    3783                 :            :         /* 3. successful compare */
    3784                 :          6 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    3785                 :          6 :         expected_io = ut_alloc_expected_io(expected_io_type, offset, num_blocks, 0);
    3786                 :          6 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3787                 :            : 
    3788                 :          6 :         g_io_done = false;
    3789                 :          6 :         g_compare_read_buf = aa_buf;
    3790                 :          6 :         g_compare_read_buf_len = sizeof(aa_buf);
    3791                 :          6 :         rc = spdk_bdev_compare_blocks(desc, ioch, aa_buf, offset, num_blocks, io_done, NULL);
    3792                 :          6 :         CU_ASSERT_EQUAL(rc, 0);
    3793                 :          6 :         num_completed = stub_complete_io(1);
    3794                 :          6 :         CU_ASSERT_EQUAL(num_completed, 1);
    3795         [ -  + ]:          6 :         CU_ASSERT(g_io_done == true);
    3796                 :          6 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    3797                 :            : 
    3798                 :            :         /* 4. miscompare compare */
    3799                 :          6 :         expected_io = ut_alloc_expected_io(expected_io_type, offset, num_blocks, 0);
    3800                 :          6 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3801                 :            : 
    3802                 :          6 :         g_io_done = false;
    3803                 :          6 :         g_compare_read_buf = bb_buf;
    3804                 :          6 :         g_compare_read_buf_len = sizeof(bb_buf);
    3805                 :          6 :         rc = spdk_bdev_compare_blocks(desc, ioch, aa_buf, offset, num_blocks, io_done, NULL);
    3806                 :          6 :         CU_ASSERT_EQUAL(rc, 0);
    3807                 :          6 :         num_completed = stub_complete_io(1);
    3808                 :          6 :         CU_ASSERT_EQUAL(num_completed, 1);
    3809         [ -  + ]:          6 :         CU_ASSERT(g_io_done == true);
    3810                 :          6 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_MISCOMPARE);
    3811                 :            : 
    3812                 :          6 :         spdk_put_io_channel(ioch);
    3813                 :          6 :         spdk_bdev_close(desc);
    3814                 :          6 :         free_bdev(bdev);
    3815                 :          6 :         fn_table.submit_request = stub_submit_request;
    3816                 :          6 :         ut_fini_bdev();
    3817                 :            : 
    3818                 :          6 :         g_io_types_supported[SPDK_BDEV_IO_TYPE_COMPARE] = true;
    3819                 :            : 
    3820                 :          6 :         g_compare_read_buf = NULL;
    3821                 :          6 : }
    3822                 :            : 
    3823                 :            : static void
    3824                 :          6 : _bdev_compare_with_md(bool emulated)
    3825                 :            : {
    3826                 :            :         struct spdk_bdev *bdev;
    3827                 :          6 :         struct spdk_bdev_desc *desc = NULL;
    3828                 :            :         struct spdk_io_channel *ioch;
    3829                 :            :         struct ut_expected_io *expected_io;
    3830                 :            :         uint64_t offset, num_blocks;
    3831                 :            :         uint32_t num_completed;
    3832                 :          6 :         char buf[1024 + 16 /* 2 * blocklen + 2 * mdlen */];
    3833                 :          6 :         char buf_interleaved_miscompare[1024 + 16 /* 2 * blocklen + 2 * mdlen */];
    3834                 :          6 :         char buf_miscompare[1024 /* 2 * blocklen */];
    3835                 :          6 :         char md_buf[16];
    3836                 :          6 :         char md_buf_miscompare[16];
    3837                 :          6 :         struct iovec compare_iov;
    3838                 :            :         uint8_t expected_io_type;
    3839                 :            :         int rc;
    3840                 :            : 
    3841         [ +  + ]:          6 :         if (emulated) {
    3842                 :          3 :                 expected_io_type = SPDK_BDEV_IO_TYPE_READ;
    3843                 :            :         } else {
    3844                 :          3 :                 expected_io_type = SPDK_BDEV_IO_TYPE_COMPARE;
    3845                 :            :         }
    3846                 :            : 
    3847                 :          6 :         memset(buf, 0xaa, sizeof(buf));
    3848                 :          6 :         memset(buf_interleaved_miscompare, 0xaa, sizeof(buf_interleaved_miscompare));
    3849                 :            :         /* make last md different */
    3850         [ -  + ]:          6 :         memset(buf_interleaved_miscompare + 1024 + 8, 0xbb, 8);
    3851                 :          6 :         memset(buf_miscompare, 0xbb, sizeof(buf_miscompare));
    3852                 :          6 :         memset(md_buf, 0xaa, 16);
    3853                 :          6 :         memset(md_buf_miscompare, 0xbb, 16);
    3854                 :            : 
    3855                 :          6 :         g_io_types_supported[SPDK_BDEV_IO_TYPE_COMPARE] = !emulated;
    3856                 :            : 
    3857                 :          6 :         ut_init_bdev(NULL);
    3858                 :          6 :         fn_table.submit_request = stub_submit_request_get_buf;
    3859                 :          6 :         bdev = allocate_bdev("bdev");
    3860                 :            : 
    3861                 :          6 :         rc = spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc);
    3862                 :          6 :         CU_ASSERT_EQUAL(rc, 0);
    3863         [ -  + ]:          6 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    3864                 :          6 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    3865                 :          6 :         ioch = spdk_bdev_get_io_channel(desc);
    3866         [ -  + ]:          6 :         SPDK_CU_ASSERT_FATAL(ioch != NULL);
    3867                 :            : 
    3868                 :          6 :         fn_table.submit_request = stub_submit_request_get_buf;
    3869                 :          6 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    3870                 :            : 
    3871                 :          6 :         offset = 50;
    3872                 :          6 :         num_blocks = 2;
    3873                 :            : 
    3874                 :            :         /* interleaved md & data */
    3875                 :          6 :         bdev->md_interleave = true;
    3876                 :          6 :         bdev->md_len = 8;
    3877                 :          6 :         bdev->blocklen = 512 + 8;
    3878                 :          6 :         compare_iov.iov_base = buf;
    3879                 :          6 :         compare_iov.iov_len = sizeof(buf);
    3880                 :            : 
    3881                 :            :         /* 1. successful compare with md interleaved */
    3882                 :          6 :         expected_io = ut_alloc_expected_io(expected_io_type, offset, num_blocks, 0);
    3883                 :          6 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3884                 :            : 
    3885                 :          6 :         g_io_done = false;
    3886                 :          6 :         g_compare_read_buf = buf;
    3887                 :          6 :         g_compare_read_buf_len = sizeof(buf);
    3888                 :          6 :         rc = spdk_bdev_comparev_blocks(desc, ioch, &compare_iov, 1, offset, num_blocks, io_done, NULL);
    3889                 :          6 :         CU_ASSERT_EQUAL(rc, 0);
    3890                 :          6 :         num_completed = stub_complete_io(1);
    3891                 :          6 :         CU_ASSERT_EQUAL(num_completed, 1);
    3892         [ -  + ]:          6 :         CU_ASSERT(g_io_done == true);
    3893                 :          6 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    3894                 :            : 
    3895                 :            :         /* 2. miscompare with md interleaved */
    3896                 :          6 :         expected_io = ut_alloc_expected_io(expected_io_type, offset, num_blocks, 0);
    3897                 :          6 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3898                 :            : 
    3899                 :          6 :         g_io_done = false;
    3900                 :          6 :         g_compare_read_buf = buf_interleaved_miscompare;
    3901                 :          6 :         g_compare_read_buf_len = sizeof(buf_interleaved_miscompare);
    3902                 :          6 :         rc = spdk_bdev_comparev_blocks(desc, ioch, &compare_iov, 1, offset, num_blocks, io_done, NULL);
    3903                 :          6 :         CU_ASSERT_EQUAL(rc, 0);
    3904                 :          6 :         num_completed = stub_complete_io(1);
    3905                 :          6 :         CU_ASSERT_EQUAL(num_completed, 1);
    3906         [ -  + ]:          6 :         CU_ASSERT(g_io_done == true);
    3907                 :          6 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_MISCOMPARE);
    3908                 :            : 
    3909                 :            :         /* Separate data & md buffers */
    3910                 :          6 :         bdev->md_interleave = false;
    3911                 :          6 :         bdev->blocklen = 512;
    3912                 :          6 :         compare_iov.iov_base = buf;
    3913                 :          6 :         compare_iov.iov_len = 1024;
    3914                 :            : 
    3915                 :            :         /* 3. successful compare with md separated */
    3916                 :          6 :         expected_io = ut_alloc_expected_io(expected_io_type, offset, num_blocks, 0);
    3917                 :          6 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3918                 :            : 
    3919                 :          6 :         g_io_done = false;
    3920                 :          6 :         g_compare_read_buf = buf;
    3921                 :          6 :         g_compare_read_buf_len = 1024;
    3922                 :          6 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    3923                 :          6 :         g_compare_md_buf = md_buf;
    3924                 :          6 :         rc = spdk_bdev_comparev_blocks_with_md(desc, ioch, &compare_iov, 1, md_buf,
    3925                 :            :                                                offset, num_blocks, io_done, NULL);
    3926                 :          6 :         CU_ASSERT_EQUAL(rc, 0);
    3927                 :          6 :         num_completed = stub_complete_io(1);
    3928                 :          6 :         CU_ASSERT_EQUAL(num_completed, 1);
    3929         [ -  + ]:          6 :         CU_ASSERT(g_io_done == true);
    3930                 :          6 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    3931                 :            : 
    3932                 :            :         /* 4. miscompare with md separated where md buf is different */
    3933                 :          6 :         expected_io = ut_alloc_expected_io(expected_io_type, offset, num_blocks, 0);
    3934                 :          6 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3935                 :            : 
    3936                 :          6 :         g_io_done = false;
    3937                 :          6 :         g_compare_read_buf = buf;
    3938                 :          6 :         g_compare_read_buf_len = 1024;
    3939                 :          6 :         g_compare_md_buf = md_buf_miscompare;
    3940                 :          6 :         rc = spdk_bdev_comparev_blocks_with_md(desc, ioch, &compare_iov, 1, md_buf,
    3941                 :            :                                                offset, num_blocks, io_done, NULL);
    3942                 :          6 :         CU_ASSERT_EQUAL(rc, 0);
    3943                 :          6 :         num_completed = stub_complete_io(1);
    3944                 :          6 :         CU_ASSERT_EQUAL(num_completed, 1);
    3945         [ -  + ]:          6 :         CU_ASSERT(g_io_done == true);
    3946                 :          6 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_MISCOMPARE);
    3947                 :            : 
    3948                 :            :         /* 5. miscompare with md separated where buf is different */
    3949                 :          6 :         expected_io = ut_alloc_expected_io(expected_io_type, offset, num_blocks, 0);
    3950                 :          6 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    3951                 :            : 
    3952                 :          6 :         g_io_done = false;
    3953                 :          6 :         g_compare_read_buf = buf_miscompare;
    3954                 :          6 :         g_compare_read_buf_len = sizeof(buf_miscompare);
    3955                 :          6 :         g_compare_md_buf = md_buf;
    3956                 :          6 :         rc = spdk_bdev_comparev_blocks_with_md(desc, ioch, &compare_iov, 1, md_buf,
    3957                 :            :                                                offset, num_blocks, io_done, NULL);
    3958                 :          6 :         CU_ASSERT_EQUAL(rc, 0);
    3959                 :          6 :         num_completed = stub_complete_io(1);
    3960                 :          6 :         CU_ASSERT_EQUAL(num_completed, 1);
    3961         [ -  + ]:          6 :         CU_ASSERT(g_io_done == true);
    3962                 :          6 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_MISCOMPARE);
    3963                 :            : 
    3964                 :          6 :         bdev->md_len = 0;
    3965                 :          6 :         g_compare_md_buf = NULL;
    3966                 :            : 
    3967                 :          6 :         spdk_put_io_channel(ioch);
    3968                 :          6 :         spdk_bdev_close(desc);
    3969                 :          6 :         free_bdev(bdev);
    3970                 :          6 :         fn_table.submit_request = stub_submit_request;
    3971                 :          6 :         ut_fini_bdev();
    3972                 :            : 
    3973                 :          6 :         g_io_types_supported[SPDK_BDEV_IO_TYPE_COMPARE] = true;
    3974                 :            : 
    3975                 :          6 :         g_compare_read_buf = NULL;
    3976                 :          6 : }
    3977                 :            : 
    3978                 :            : static void
    3979                 :          3 : bdev_compare(void)
    3980                 :            : {
    3981                 :          3 :         _bdev_compare(false);
    3982                 :          3 :         _bdev_compare_with_md(false);
    3983                 :          3 : }
    3984                 :            : 
    3985                 :            : static void
    3986                 :          3 : bdev_compare_emulated(void)
    3987                 :            : {
    3988                 :          3 :         _bdev_compare(true);
    3989                 :          3 :         _bdev_compare_with_md(true);
    3990                 :          3 : }
    3991                 :            : 
    3992                 :            : static void
    3993                 :          3 : bdev_compare_and_write(void)
    3994                 :            : {
    3995                 :            :         struct spdk_bdev *bdev;
    3996                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    3997                 :            :         struct spdk_io_channel *ioch;
    3998                 :            :         struct ut_expected_io *expected_io;
    3999                 :            :         uint64_t offset, num_blocks;
    4000                 :            :         uint32_t num_completed;
    4001                 :          3 :         char aa_buf[512];
    4002                 :          3 :         char bb_buf[512];
    4003                 :          3 :         char cc_buf[512];
    4004                 :          3 :         char write_buf[512];
    4005                 :          3 :         struct iovec compare_iov;
    4006                 :          3 :         struct iovec write_iov;
    4007                 :            :         int rc;
    4008                 :            : 
    4009                 :          3 :         memset(aa_buf, 0xaa, sizeof(aa_buf));
    4010                 :          3 :         memset(bb_buf, 0xbb, sizeof(bb_buf));
    4011                 :          3 :         memset(cc_buf, 0xcc, sizeof(cc_buf));
    4012                 :            : 
    4013                 :          3 :         g_io_types_supported[SPDK_BDEV_IO_TYPE_COMPARE] = false;
    4014                 :            : 
    4015                 :          3 :         ut_init_bdev(NULL);
    4016                 :          3 :         fn_table.submit_request = stub_submit_request_get_buf;
    4017                 :          3 :         bdev = allocate_bdev("bdev");
    4018                 :            : 
    4019                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc);
    4020                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4021         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    4022                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    4023                 :          3 :         ioch = spdk_bdev_get_io_channel(desc);
    4024         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(ioch != NULL);
    4025                 :            : 
    4026                 :          3 :         fn_table.submit_request = stub_submit_request_get_buf;
    4027                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    4028                 :            : 
    4029                 :          3 :         offset = 50;
    4030                 :          3 :         num_blocks = 1;
    4031                 :          3 :         compare_iov.iov_base = aa_buf;
    4032                 :          3 :         compare_iov.iov_len = sizeof(aa_buf);
    4033                 :          3 :         write_iov.iov_base = bb_buf;
    4034                 :          3 :         write_iov.iov_len = sizeof(bb_buf);
    4035                 :            : 
    4036                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, offset, num_blocks, 0);
    4037                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    4038                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, offset, num_blocks, 0);
    4039                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    4040                 :            : 
    4041                 :          3 :         g_io_done = false;
    4042                 :          3 :         g_compare_read_buf = aa_buf;
    4043                 :          3 :         g_compare_read_buf_len = sizeof(aa_buf);
    4044                 :          3 :         memset(write_buf, 0, sizeof(write_buf));
    4045                 :          3 :         g_compare_write_buf = write_buf;
    4046                 :          3 :         g_compare_write_buf_len = sizeof(write_buf);
    4047                 :          3 :         rc = spdk_bdev_comparev_and_writev_blocks(desc, ioch, &compare_iov, 1, &write_iov, 1,
    4048                 :            :                         offset, num_blocks, io_done, NULL);
    4049                 :            :         /* Trigger range locking */
    4050                 :          3 :         poll_threads();
    4051                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4052                 :          3 :         num_completed = stub_complete_io(1);
    4053                 :          3 :         CU_ASSERT_EQUAL(num_completed, 1);
    4054         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    4055                 :          3 :         num_completed = stub_complete_io(1);
    4056                 :            :         /* Trigger range unlocking */
    4057                 :          3 :         poll_threads();
    4058                 :          3 :         CU_ASSERT_EQUAL(num_completed, 1);
    4059         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    4060                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    4061                 :          3 :         CU_ASSERT(memcmp(write_buf, bb_buf, sizeof(write_buf)) == 0);
    4062                 :            : 
    4063                 :            :         /* Test miscompare */
    4064                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, offset, num_blocks, 0);
    4065                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    4066                 :            : 
    4067                 :          3 :         g_io_done = false;
    4068                 :          3 :         g_compare_read_buf = cc_buf;
    4069                 :          3 :         g_compare_read_buf_len = sizeof(cc_buf);
    4070                 :          3 :         memset(write_buf, 0, sizeof(write_buf));
    4071                 :          3 :         g_compare_write_buf = write_buf;
    4072                 :          3 :         g_compare_write_buf_len = sizeof(write_buf);
    4073                 :          3 :         rc = spdk_bdev_comparev_and_writev_blocks(desc, ioch, &compare_iov, 1, &write_iov, 1,
    4074                 :            :                         offset, num_blocks, io_done, NULL);
    4075                 :            :         /* Trigger range locking */
    4076                 :          3 :         poll_threads();
    4077                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4078                 :          3 :         num_completed = stub_complete_io(1);
    4079                 :            :         /* Trigger range unlocking earlier because we expect error here */
    4080                 :          3 :         poll_threads();
    4081                 :          3 :         CU_ASSERT_EQUAL(num_completed, 1);
    4082         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    4083                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_MISCOMPARE);
    4084                 :          3 :         num_completed = stub_complete_io(1);
    4085                 :          3 :         CU_ASSERT_EQUAL(num_completed, 0);
    4086                 :            : 
    4087                 :          3 :         spdk_put_io_channel(ioch);
    4088                 :          3 :         spdk_bdev_close(desc);
    4089                 :          3 :         free_bdev(bdev);
    4090                 :          3 :         fn_table.submit_request = stub_submit_request;
    4091                 :          3 :         ut_fini_bdev();
    4092                 :            : 
    4093                 :          3 :         g_io_types_supported[SPDK_BDEV_IO_TYPE_COMPARE] = true;
    4094                 :            : 
    4095                 :          3 :         g_compare_read_buf = NULL;
    4096                 :          3 :         g_compare_write_buf = NULL;
    4097                 :          3 : }
    4098                 :            : 
    4099                 :            : static void
    4100                 :          3 : bdev_write_zeroes(void)
    4101                 :            : {
    4102                 :            :         struct spdk_bdev *bdev;
    4103                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    4104                 :            :         struct spdk_io_channel *ioch;
    4105                 :            :         struct ut_expected_io *expected_io;
    4106                 :            :         uint64_t offset, num_io_blocks, num_blocks;
    4107                 :            :         uint32_t num_completed, num_requests;
    4108                 :            :         int rc;
    4109                 :            : 
    4110                 :          3 :         ut_init_bdev(NULL);
    4111                 :          3 :         bdev = allocate_bdev("bdev");
    4112                 :            : 
    4113                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc);
    4114                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4115         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    4116                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    4117                 :          3 :         ioch = spdk_bdev_get_io_channel(desc);
    4118         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(ioch != NULL);
    4119                 :            : 
    4120                 :          3 :         fn_table.submit_request = stub_submit_request;
    4121                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    4122                 :            : 
    4123                 :            :         /* First test that if the bdev supports write_zeroes, the request won't be split */
    4124                 :          3 :         bdev->md_len = 0;
    4125                 :          3 :         bdev->blocklen = 4096;
    4126         [ -  + ]:          3 :         num_blocks = (ZERO_BUFFER_SIZE / bdev->blocklen) * 2;
    4127                 :            : 
    4128                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE_ZEROES, 0, num_blocks, 0);
    4129                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    4130                 :          3 :         rc = spdk_bdev_write_zeroes_blocks(desc, ioch, 0, num_blocks, io_done, NULL);
    4131                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4132                 :          3 :         num_completed = stub_complete_io(1);
    4133                 :          3 :         CU_ASSERT_EQUAL(num_completed, 1);
    4134                 :            : 
    4135                 :            :         /* Check that if write zeroes is not supported it'll be replaced by regular writes */
    4136                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_WRITE_ZEROES, false);
    4137                 :          3 :         bdev->max_write_zeroes = bdev_get_max_write(bdev, ZERO_BUFFER_SIZE);
    4138         [ -  + ]:          3 :         num_io_blocks = ZERO_BUFFER_SIZE / bdev->blocklen;
    4139                 :          3 :         num_requests = 2;
    4140         [ -  + ]:          3 :         num_blocks = (ZERO_BUFFER_SIZE / bdev->blocklen) * num_requests;
    4141                 :            : 
    4142         [ +  + ]:          9 :         for (offset = 0; offset < num_requests; ++offset) {
    4143                 :          6 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE,
    4144                 :            :                                                    offset * num_io_blocks, num_io_blocks, 0);
    4145                 :          6 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    4146                 :            :         }
    4147                 :            : 
    4148                 :          3 :         rc = spdk_bdev_write_zeroes_blocks(desc, ioch, 0, num_blocks, io_done, NULL);
    4149                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4150                 :          3 :         num_completed = stub_complete_io(num_requests);
    4151                 :          3 :         CU_ASSERT_EQUAL(num_completed, num_requests);
    4152                 :            : 
    4153                 :            :         /* Check that the splitting is correct if bdev has interleaved metadata */
    4154                 :          3 :         bdev->md_interleave = true;
    4155                 :          3 :         bdev->md_len = 64;
    4156                 :          3 :         bdev->blocklen = 4096 + 64;
    4157                 :          3 :         bdev->max_write_zeroes = bdev_get_max_write(bdev, ZERO_BUFFER_SIZE);
    4158         [ -  + ]:          3 :         num_blocks = (ZERO_BUFFER_SIZE / bdev->blocklen) * 2;
    4159                 :            : 
    4160                 :          3 :         num_requests = offset = 0;
    4161         [ +  + ]:          9 :         while (offset < num_blocks) {
    4162   [ -  +  +  +  :          6 :                 num_io_blocks = spdk_min(ZERO_BUFFER_SIZE / bdev->blocklen, num_blocks - offset);
                   -  + ]
    4163                 :          6 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE,
    4164                 :            :                                                    offset, num_io_blocks, 0);
    4165                 :          6 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    4166                 :          6 :                 offset += num_io_blocks;
    4167                 :          6 :                 num_requests++;
    4168                 :            :         }
    4169                 :            : 
    4170                 :          3 :         rc = spdk_bdev_write_zeroes_blocks(desc, ioch, 0, num_blocks, io_done, NULL);
    4171                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4172                 :          3 :         num_completed = stub_complete_io(num_requests);
    4173                 :          3 :         CU_ASSERT_EQUAL(num_completed, num_requests);
    4174                 :          3 :         num_completed = stub_complete_io(num_requests);
    4175         [ -  + ]:          3 :         assert(num_completed == 0);
    4176                 :            : 
    4177                 :            :         /* Check the the same for separate metadata buffer */
    4178                 :          3 :         bdev->md_interleave = false;
    4179                 :          3 :         bdev->md_len = 64;
    4180                 :          3 :         bdev->blocklen = 4096;
    4181                 :          3 :         bdev->max_write_zeroes = bdev_get_max_write(bdev, ZERO_BUFFER_SIZE);
    4182                 :            : 
    4183                 :          3 :         num_requests = offset = 0;
    4184         [ +  + ]:          9 :         while (offset < num_blocks) {
    4185   [ -  +  +  -  :          6 :                 num_io_blocks = spdk_min(ZERO_BUFFER_SIZE / (bdev->blocklen + bdev->md_len), num_blocks);
                   -  + ]
    4186                 :          6 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE,
    4187                 :            :                                                    offset, num_io_blocks, 0);
    4188                 :          6 :                 expected_io->md_buf = (char *)g_bdev_mgr.zero_buffer + num_io_blocks * bdev->blocklen;
    4189                 :          6 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    4190                 :          6 :                 offset += num_io_blocks;
    4191                 :          6 :                 num_requests++;
    4192                 :            :         }
    4193                 :            : 
    4194                 :          3 :         rc = spdk_bdev_write_zeroes_blocks(desc, ioch, 0, num_blocks, io_done, NULL);
    4195                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4196                 :          3 :         num_completed = stub_complete_io(num_requests);
    4197                 :          3 :         CU_ASSERT_EQUAL(num_completed, num_requests);
    4198                 :            : 
    4199                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_WRITE_ZEROES, true);
    4200                 :          3 :         spdk_put_io_channel(ioch);
    4201                 :          3 :         spdk_bdev_close(desc);
    4202                 :          3 :         free_bdev(bdev);
    4203                 :          3 :         ut_fini_bdev();
    4204                 :          3 : }
    4205                 :            : 
    4206                 :            : static void
    4207                 :          3 : bdev_zcopy_write(void)
    4208                 :            : {
    4209                 :            :         struct spdk_bdev *bdev;
    4210                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    4211                 :            :         struct spdk_io_channel *ioch;
    4212                 :            :         struct ut_expected_io *expected_io;
    4213                 :            :         uint64_t offset, num_blocks;
    4214                 :            :         uint32_t num_completed;
    4215                 :          3 :         char aa_buf[512];
    4216                 :          3 :         struct iovec iov;
    4217                 :            :         int rc;
    4218                 :          3 :         const bool populate = false;
    4219                 :          3 :         const bool commit = true;
    4220                 :            : 
    4221                 :          3 :         memset(aa_buf, 0xaa, sizeof(aa_buf));
    4222                 :            : 
    4223                 :          3 :         ut_init_bdev(NULL);
    4224                 :          3 :         bdev = allocate_bdev("bdev");
    4225                 :            : 
    4226                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc);
    4227                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4228         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    4229                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    4230                 :          3 :         ioch = spdk_bdev_get_io_channel(desc);
    4231         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(ioch != NULL);
    4232                 :            : 
    4233                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    4234                 :            : 
    4235                 :          3 :         offset = 50;
    4236                 :          3 :         num_blocks = 1;
    4237                 :          3 :         iov.iov_base = NULL;
    4238                 :          3 :         iov.iov_len = 0;
    4239                 :            : 
    4240                 :          3 :         g_zcopy_read_buf = (void *) 0x1122334455667788UL;
    4241                 :          3 :         g_zcopy_read_buf_len = (uint32_t) -1;
    4242                 :            :         /* Do a zcopy start for a write (populate=false) */
    4243                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_ZCOPY, offset, num_blocks, 0);
    4244                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    4245                 :          3 :         g_io_done = false;
    4246                 :          3 :         g_zcopy_write_buf = aa_buf;
    4247                 :          3 :         g_zcopy_write_buf_len = sizeof(aa_buf);
    4248                 :          3 :         g_zcopy_bdev_io = NULL;
    4249                 :          3 :         rc = spdk_bdev_zcopy_start(desc, ioch, &iov, 1, offset, num_blocks, populate, io_done, NULL);
    4250                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4251                 :          3 :         num_completed = stub_complete_io(1);
    4252                 :          3 :         CU_ASSERT_EQUAL(num_completed, 1);
    4253         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    4254                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    4255                 :            :         /* Check that the iov has been set up */
    4256                 :          3 :         CU_ASSERT(iov.iov_base == g_zcopy_write_buf);
    4257                 :          3 :         CU_ASSERT(iov.iov_len == g_zcopy_write_buf_len);
    4258                 :            :         /* Check that the bdev_io has been saved */
    4259                 :          3 :         CU_ASSERT(g_zcopy_bdev_io != NULL);
    4260                 :            :         /* Now do the zcopy end for a write (commit=true) */
    4261                 :          3 :         g_io_done = false;
    4262                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_ZCOPY, offset, num_blocks, 0);
    4263                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    4264                 :          3 :         rc = spdk_bdev_zcopy_end(g_zcopy_bdev_io, commit, io_done, NULL);
    4265                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4266                 :          3 :         num_completed = stub_complete_io(1);
    4267                 :          3 :         CU_ASSERT_EQUAL(num_completed, 1);
    4268         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    4269                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    4270                 :            :         /* Check the g_zcopy are reset by io_done */
    4271                 :          3 :         CU_ASSERT(g_zcopy_write_buf == NULL);
    4272                 :          3 :         CU_ASSERT(g_zcopy_write_buf_len == 0);
    4273                 :            :         /* Check that io_done has freed the g_zcopy_bdev_io */
    4274                 :          3 :         CU_ASSERT(g_zcopy_bdev_io == NULL);
    4275                 :            : 
    4276                 :            :         /* Check the zcopy read buffer has not been touched which
    4277                 :            :          * ensures that the correct buffers were used.
    4278                 :            :          */
    4279                 :          3 :         CU_ASSERT(g_zcopy_read_buf == (void *) 0x1122334455667788UL);
    4280                 :          3 :         CU_ASSERT(g_zcopy_read_buf_len == (uint32_t) -1);
    4281                 :            : 
    4282                 :          3 :         spdk_put_io_channel(ioch);
    4283                 :          3 :         spdk_bdev_close(desc);
    4284                 :          3 :         free_bdev(bdev);
    4285                 :          3 :         ut_fini_bdev();
    4286                 :          3 : }
    4287                 :            : 
    4288                 :            : static void
    4289                 :          3 : bdev_zcopy_read(void)
    4290                 :            : {
    4291                 :            :         struct spdk_bdev *bdev;
    4292                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    4293                 :            :         struct spdk_io_channel *ioch;
    4294                 :            :         struct ut_expected_io *expected_io;
    4295                 :            :         uint64_t offset, num_blocks;
    4296                 :            :         uint32_t num_completed;
    4297                 :          3 :         char aa_buf[512];
    4298                 :          3 :         struct iovec iov;
    4299                 :            :         int rc;
    4300                 :          3 :         const bool populate = true;
    4301                 :          3 :         const bool commit = false;
    4302                 :            : 
    4303                 :          3 :         memset(aa_buf, 0xaa, sizeof(aa_buf));
    4304                 :            : 
    4305                 :          3 :         ut_init_bdev(NULL);
    4306                 :          3 :         bdev = allocate_bdev("bdev");
    4307                 :            : 
    4308                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc);
    4309                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4310         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    4311                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    4312                 :          3 :         ioch = spdk_bdev_get_io_channel(desc);
    4313         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(ioch != NULL);
    4314                 :            : 
    4315                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    4316                 :            : 
    4317                 :          3 :         offset = 50;
    4318                 :          3 :         num_blocks = 1;
    4319                 :          3 :         iov.iov_base = NULL;
    4320                 :          3 :         iov.iov_len = 0;
    4321                 :            : 
    4322                 :          3 :         g_zcopy_write_buf = (void *) 0x1122334455667788UL;
    4323                 :          3 :         g_zcopy_write_buf_len = (uint32_t) -1;
    4324                 :            : 
    4325                 :            :         /* Do a zcopy start for a read (populate=true) */
    4326                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_ZCOPY, offset, num_blocks, 0);
    4327                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    4328                 :          3 :         g_io_done = false;
    4329                 :          3 :         g_zcopy_read_buf = aa_buf;
    4330                 :          3 :         g_zcopy_read_buf_len = sizeof(aa_buf);
    4331                 :          3 :         g_zcopy_bdev_io = NULL;
    4332                 :          3 :         rc = spdk_bdev_zcopy_start(desc, ioch, &iov, 1, offset, num_blocks, populate, io_done, NULL);
    4333                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4334                 :          3 :         num_completed = stub_complete_io(1);
    4335                 :          3 :         CU_ASSERT_EQUAL(num_completed, 1);
    4336         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    4337                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    4338                 :            :         /* Check that the iov has been set up */
    4339                 :          3 :         CU_ASSERT(iov.iov_base == g_zcopy_read_buf);
    4340                 :          3 :         CU_ASSERT(iov.iov_len == g_zcopy_read_buf_len);
    4341                 :            :         /* Check that the bdev_io has been saved */
    4342                 :          3 :         CU_ASSERT(g_zcopy_bdev_io != NULL);
    4343                 :            : 
    4344                 :            :         /* Now do the zcopy end for a read (commit=false) */
    4345                 :          3 :         g_io_done = false;
    4346                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_ZCOPY, offset, num_blocks, 0);
    4347                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    4348                 :          3 :         rc = spdk_bdev_zcopy_end(g_zcopy_bdev_io, commit, io_done, NULL);
    4349                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4350                 :          3 :         num_completed = stub_complete_io(1);
    4351                 :          3 :         CU_ASSERT_EQUAL(num_completed, 1);
    4352         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    4353                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    4354                 :            :         /* Check the g_zcopy are reset by io_done */
    4355                 :          3 :         CU_ASSERT(g_zcopy_read_buf == NULL);
    4356                 :          3 :         CU_ASSERT(g_zcopy_read_buf_len == 0);
    4357                 :            :         /* Check that io_done has freed the g_zcopy_bdev_io */
    4358                 :          3 :         CU_ASSERT(g_zcopy_bdev_io == NULL);
    4359                 :            : 
    4360                 :            :         /* Check the zcopy write buffer has not been touched which
    4361                 :            :          * ensures that the correct buffers were used.
    4362                 :            :          */
    4363                 :          3 :         CU_ASSERT(g_zcopy_write_buf == (void *) 0x1122334455667788UL);
    4364                 :          3 :         CU_ASSERT(g_zcopy_write_buf_len == (uint32_t) -1);
    4365                 :            : 
    4366                 :          3 :         spdk_put_io_channel(ioch);
    4367                 :          3 :         spdk_bdev_close(desc);
    4368                 :          3 :         free_bdev(bdev);
    4369                 :          3 :         ut_fini_bdev();
    4370                 :          3 : }
    4371                 :            : 
    4372                 :            : static void
    4373                 :          3 : bdev_open_while_hotremove(void)
    4374                 :            : {
    4375                 :            :         struct spdk_bdev *bdev;
    4376                 :          3 :         struct spdk_bdev_desc *desc[2] = {};
    4377                 :            :         int rc;
    4378                 :            : 
    4379                 :          3 :         bdev = allocate_bdev("bdev");
    4380                 :            : 
    4381                 :          3 :         rc = spdk_bdev_open_ext("bdev", false, bdev_ut_event_cb, NULL, &desc[0]);
    4382                 :          3 :         CU_ASSERT(rc == 0);
    4383         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc[0] != NULL);
    4384                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc[0]));
    4385                 :            : 
    4386                 :          3 :         spdk_bdev_unregister(bdev, NULL, NULL);
    4387                 :            :         /* Bdev unregister is handled asynchronously. Poll thread to complete. */
    4388                 :          3 :         poll_threads();
    4389                 :            : 
    4390                 :          3 :         rc = spdk_bdev_open_ext("bdev", false, bdev_ut_event_cb, NULL, &desc[1]);
    4391                 :          3 :         CU_ASSERT(rc == -ENODEV);
    4392         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc[1] == NULL);
    4393                 :            : 
    4394                 :          3 :         spdk_bdev_close(desc[0]);
    4395                 :          3 :         free_bdev(bdev);
    4396                 :          3 : }
    4397                 :            : 
    4398                 :            : static void
    4399                 :          3 : bdev_close_while_hotremove(void)
    4400                 :            : {
    4401                 :            :         struct spdk_bdev *bdev;
    4402                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    4403                 :          3 :         int rc = 0;
    4404                 :            : 
    4405                 :          3 :         bdev = allocate_bdev("bdev");
    4406                 :            : 
    4407                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_open_cb1, &desc, &desc);
    4408                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4409         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    4410                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    4411                 :            : 
    4412                 :            :         /* Simulate hot-unplug by unregistering bdev */
    4413                 :          3 :         g_event_type1 = 0xFF;
    4414                 :          3 :         g_unregister_arg = NULL;
    4415                 :          3 :         g_unregister_rc = -1;
    4416                 :          3 :         spdk_bdev_unregister(bdev, bdev_unregister_cb, (void *)0x12345678);
    4417                 :            :         /* Close device while remove event is in flight */
    4418                 :          3 :         spdk_bdev_close(desc);
    4419                 :            : 
    4420                 :            :         /* Ensure that unregister callback is delayed */
    4421                 :          3 :         CU_ASSERT_EQUAL(g_unregister_arg, NULL);
    4422                 :          3 :         CU_ASSERT_EQUAL(g_unregister_rc, -1);
    4423                 :            : 
    4424                 :          3 :         poll_threads();
    4425                 :            : 
    4426                 :            :         /* Event callback shall not be issued because device was closed */
    4427                 :          3 :         CU_ASSERT_EQUAL(g_event_type1, 0xFF);
    4428                 :            :         /* Unregister callback is issued */
    4429                 :          3 :         CU_ASSERT_EQUAL(g_unregister_arg, (void *)0x12345678);
    4430                 :          3 :         CU_ASSERT_EQUAL(g_unregister_rc, 0);
    4431                 :            : 
    4432                 :          3 :         free_bdev(bdev);
    4433                 :          3 : }
    4434                 :            : 
    4435                 :            : static void
    4436                 :          3 : bdev_open_ext_test(void)
    4437                 :            : {
    4438                 :            :         struct spdk_bdev *bdev;
    4439                 :          3 :         struct spdk_bdev_desc *desc1 = NULL;
    4440                 :          3 :         struct spdk_bdev_desc *desc2 = NULL;
    4441                 :          3 :         int rc = 0;
    4442                 :            : 
    4443                 :          3 :         bdev = allocate_bdev("bdev");
    4444                 :            : 
    4445                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, NULL, NULL, &desc1);
    4446                 :          3 :         CU_ASSERT_EQUAL(rc, -EINVAL);
    4447                 :            : 
    4448                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_open_cb1, &desc1, &desc1);
    4449                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4450                 :            : 
    4451                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_open_cb2, &desc2, &desc2);
    4452                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4453                 :            : 
    4454                 :          3 :         g_event_type1 = 0xFF;
    4455                 :          3 :         g_event_type2 = 0xFF;
    4456                 :            : 
    4457                 :            :         /* Simulate hot-unplug by unregistering bdev */
    4458                 :          3 :         spdk_bdev_unregister(bdev, NULL, NULL);
    4459                 :          3 :         poll_threads();
    4460                 :            : 
    4461                 :            :         /* Check if correct events have been triggered in event callback fn */
    4462                 :          3 :         CU_ASSERT_EQUAL(g_event_type1, SPDK_BDEV_EVENT_REMOVE);
    4463                 :          3 :         CU_ASSERT_EQUAL(g_event_type2, SPDK_BDEV_EVENT_REMOVE);
    4464                 :            : 
    4465                 :          3 :         free_bdev(bdev);
    4466                 :          3 :         poll_threads();
    4467                 :          3 : }
    4468                 :            : 
    4469                 :            : static void
    4470                 :          3 : bdev_open_ext_unregister(void)
    4471                 :            : {
    4472                 :            :         struct spdk_bdev *bdev;
    4473                 :          3 :         struct spdk_bdev_desc *desc1 = NULL;
    4474                 :          3 :         struct spdk_bdev_desc *desc2 = NULL;
    4475                 :          3 :         struct spdk_bdev_desc *desc3 = NULL;
    4476                 :          3 :         struct spdk_bdev_desc *desc4 = NULL;
    4477                 :          3 :         int rc = 0;
    4478                 :            : 
    4479                 :          3 :         bdev = allocate_bdev("bdev");
    4480                 :            : 
    4481                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, NULL, NULL, &desc1);
    4482                 :          3 :         CU_ASSERT_EQUAL(rc, -EINVAL);
    4483                 :            : 
    4484                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_open_cb1, &desc1, &desc1);
    4485                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4486                 :            : 
    4487                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_open_cb2, &desc2, &desc2);
    4488                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4489                 :            : 
    4490                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_open_cb3, &desc3, &desc3);
    4491                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4492                 :            : 
    4493                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_open_cb4, &desc4, &desc4);
    4494                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    4495                 :            : 
    4496                 :          3 :         g_event_type1 = 0xFF;
    4497                 :          3 :         g_event_type2 = 0xFF;
    4498                 :          3 :         g_event_type3 = 0xFF;
    4499                 :          3 :         g_event_type4 = 0xFF;
    4500                 :            : 
    4501                 :          3 :         g_unregister_arg = NULL;
    4502                 :          3 :         g_unregister_rc = -1;
    4503                 :            : 
    4504                 :            :         /* Simulate hot-unplug by unregistering bdev */
    4505                 :          3 :         spdk_bdev_unregister(bdev, bdev_unregister_cb, (void *)0x12345678);
    4506                 :            : 
    4507                 :            :         /*
    4508                 :            :          * Unregister is handled asynchronously and event callback
    4509                 :            :          * (i.e., above bdev_open_cbN) will be called.
    4510                 :            :          * For bdev_open_cb3 and bdev_open_cb4, it is intended to not
    4511                 :            :          * close the desc3 and desc4 so that the bdev is not closed.
    4512                 :            :          */
    4513                 :          3 :         poll_threads();
    4514                 :            : 
    4515                 :            :         /* Check if correct events have been triggered in event callback fn */
    4516                 :          3 :         CU_ASSERT_EQUAL(g_event_type1, SPDK_BDEV_EVENT_REMOVE);
    4517                 :          3 :         CU_ASSERT_EQUAL(g_event_type2, SPDK_BDEV_EVENT_REMOVE);
    4518                 :          3 :         CU_ASSERT_EQUAL(g_event_type3, SPDK_BDEV_EVENT_REMOVE);
    4519                 :          3 :         CU_ASSERT_EQUAL(g_event_type4, SPDK_BDEV_EVENT_REMOVE);
    4520                 :            : 
    4521                 :            :         /* Check that unregister callback is delayed */
    4522                 :          3 :         CU_ASSERT(g_unregister_arg == NULL);
    4523                 :          3 :         CU_ASSERT(g_unregister_rc == -1);
    4524                 :            : 
    4525                 :            :         /*
    4526                 :            :          * Explicitly close desc3. As desc4 is still opened there, the
    4527                 :            :          * unergister callback is still delayed to execute.
    4528                 :            :          */
    4529                 :          3 :         spdk_bdev_close(desc3);
    4530                 :          3 :         CU_ASSERT(g_unregister_arg == NULL);
    4531                 :          3 :         CU_ASSERT(g_unregister_rc == -1);
    4532                 :            : 
    4533                 :            :         /*
    4534                 :            :          * Explicitly close desc4 to trigger the ongoing bdev unregister
    4535                 :            :          * operation after last desc is closed.
    4536                 :            :          */
    4537                 :          3 :         spdk_bdev_close(desc4);
    4538                 :            : 
    4539                 :            :         /* Poll the thread for the async unregister operation */
    4540                 :          3 :         poll_threads();
    4541                 :            : 
    4542                 :            :         /* Check that unregister callback is executed */
    4543                 :          3 :         CU_ASSERT(g_unregister_arg == (void *)0x12345678);
    4544                 :          3 :         CU_ASSERT(g_unregister_rc == 0);
    4545                 :            : 
    4546                 :          3 :         free_bdev(bdev);
    4547                 :          3 :         poll_threads();
    4548                 :          3 : }
    4549                 :            : 
    4550                 :            : struct timeout_io_cb_arg {
    4551                 :            :         struct iovec iov;
    4552                 :            :         uint8_t type;
    4553                 :            : };
    4554                 :            : 
    4555                 :            : static int
    4556                 :         42 : bdev_channel_count_submitted_io(struct spdk_bdev_channel *ch)
    4557                 :            : {
    4558                 :            :         struct spdk_bdev_io *bdev_io;
    4559                 :         42 :         int n = 0;
    4560                 :            : 
    4561         [ -  + ]:         42 :         if (!ch) {
    4562                 :          0 :                 return -1;
    4563                 :            :         }
    4564                 :            : 
    4565         [ +  + ]:         87 :         TAILQ_FOREACH(bdev_io, &ch->io_submitted, internal.ch_link) {
    4566                 :         45 :                 n++;
    4567                 :            :         }
    4568                 :            : 
    4569                 :         42 :         return n;
    4570                 :            : }
    4571                 :            : 
    4572                 :            : static void
    4573                 :          9 : bdev_channel_io_timeout_cb(void *cb_arg, struct spdk_bdev_io *bdev_io)
    4574                 :            : {
    4575                 :          9 :         struct timeout_io_cb_arg *ctx = cb_arg;
    4576                 :            : 
    4577                 :          9 :         ctx->type = bdev_io->type;
    4578                 :          9 :         ctx->iov.iov_base = bdev_io->iov.iov_base;
    4579                 :          9 :         ctx->iov.iov_len = bdev_io->iov.iov_len;
    4580                 :          9 : }
    4581                 :            : 
    4582                 :            : static void
    4583                 :          3 : bdev_set_io_timeout(void)
    4584                 :            : {
    4585                 :            :         struct spdk_bdev *bdev;
    4586                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    4587                 :          3 :         struct spdk_io_channel *io_ch = NULL;
    4588                 :          3 :         struct spdk_bdev_channel *bdev_ch = NULL;
    4589                 :          3 :         struct timeout_io_cb_arg cb_arg;
    4590                 :            : 
    4591                 :          3 :         ut_init_bdev(NULL);
    4592                 :          3 :         bdev = allocate_bdev("bdev");
    4593                 :            : 
    4594                 :          3 :         CU_ASSERT(spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc) == 0);
    4595         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    4596                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    4597                 :            : 
    4598                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    4599                 :          3 :         CU_ASSERT(io_ch != NULL);
    4600                 :            : 
    4601                 :          3 :         bdev_ch = spdk_io_channel_get_ctx(io_ch);
    4602                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev_ch->io_submitted));
    4603                 :            : 
    4604                 :            :         /* This is the part1.
    4605                 :            :          * We will check the bdev_ch->io_submitted list
    4606                 :            :          * TO make sure that it can link IOs and only the user submitted IOs
    4607                 :            :          */
    4608                 :          3 :         CU_ASSERT(spdk_bdev_read(desc, io_ch, (void *)0x1000, 0, 4096, io_done, NULL) == 0);
    4609                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 1);
    4610                 :          3 :         CU_ASSERT(spdk_bdev_write(desc, io_ch, (void *)0x2000, 0, 4096, io_done, NULL) == 0);
    4611                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 2);
    4612                 :          3 :         stub_complete_io(1);
    4613                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 1);
    4614                 :          3 :         stub_complete_io(1);
    4615                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 0);
    4616                 :            : 
    4617                 :            :         /* Split IO */
    4618                 :          3 :         bdev->optimal_io_boundary = 16;
    4619                 :          3 :         bdev->split_on_optimal_io_boundary = true;
    4620                 :            : 
    4621                 :            :         /* Now test that a single-vector command is split correctly.
    4622                 :            :          * Offset 14, length 8, payload 0xF000
    4623                 :            :          *  Child - Offset 14, length 2, payload 0xF000
    4624                 :            :          *  Child - Offset 16, length 6, payload 0xF000 + 2 * 512
    4625                 :            :          *
    4626                 :            :          * Set up the expected values before calling spdk_bdev_read_blocks
    4627                 :            :          */
    4628                 :          3 :         CU_ASSERT(spdk_bdev_read_blocks(desc, io_ch, (void *)0xF000, 14, 8, io_done, NULL) == 0);
    4629                 :            :         /* We count all submitted IOs including IO that are generated by splitting. */
    4630                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 3);
    4631                 :          3 :         stub_complete_io(1);
    4632                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 2);
    4633                 :          3 :         stub_complete_io(1);
    4634                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 0);
    4635                 :            : 
    4636                 :            :         /* Also include the reset IO */
    4637                 :          3 :         CU_ASSERT(spdk_bdev_reset(desc, io_ch, io_done, NULL) == 0);
    4638                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 1);
    4639                 :          3 :         poll_threads();
    4640                 :          3 :         stub_complete_io(1);
    4641                 :          3 :         poll_threads();
    4642                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 0);
    4643                 :            : 
    4644                 :            :         /* This is part2
    4645                 :            :          * Test the desc timeout poller register
    4646                 :            :          */
    4647                 :            : 
    4648                 :            :         /* Successfully set the timeout */
    4649                 :          3 :         CU_ASSERT(spdk_bdev_set_timeout(desc, 30, bdev_channel_io_timeout_cb, &cb_arg) == 0);
    4650                 :          3 :         CU_ASSERT(desc->io_timeout_poller != NULL);
    4651                 :          3 :         CU_ASSERT(desc->timeout_in_sec == 30);
    4652                 :          3 :         CU_ASSERT(desc->cb_fn == bdev_channel_io_timeout_cb);
    4653                 :          3 :         CU_ASSERT(desc->cb_arg == &cb_arg);
    4654                 :            : 
    4655                 :            :         /* Change the timeout limit */
    4656                 :          3 :         CU_ASSERT(spdk_bdev_set_timeout(desc, 20, bdev_channel_io_timeout_cb, &cb_arg) == 0);
    4657                 :          3 :         CU_ASSERT(desc->io_timeout_poller != NULL);
    4658                 :          3 :         CU_ASSERT(desc->timeout_in_sec == 20);
    4659                 :          3 :         CU_ASSERT(desc->cb_fn == bdev_channel_io_timeout_cb);
    4660                 :          3 :         CU_ASSERT(desc->cb_arg == &cb_arg);
    4661                 :            : 
    4662                 :            :         /* Disable the timeout */
    4663                 :          3 :         CU_ASSERT(spdk_bdev_set_timeout(desc, 0, NULL, NULL) == 0);
    4664                 :          3 :         CU_ASSERT(desc->io_timeout_poller == NULL);
    4665                 :            : 
    4666                 :            :         /* This the part3
    4667                 :            :          * We will test to catch timeout IO and check whether the IO is
    4668                 :            :          * the submitted one.
    4669                 :            :          */
    4670                 :          3 :         memset(&cb_arg, 0, sizeof(cb_arg));
    4671                 :          3 :         CU_ASSERT(spdk_bdev_set_timeout(desc, 30, bdev_channel_io_timeout_cb, &cb_arg) == 0);
    4672                 :          3 :         CU_ASSERT(spdk_bdev_write_blocks(desc, io_ch, (void *)0x1000, 0, 1, io_done, NULL) == 0);
    4673                 :            : 
    4674                 :            :         /* Don't reach the limit */
    4675                 :          3 :         spdk_delay_us(15 * spdk_get_ticks_hz());
    4676                 :          3 :         poll_threads();
    4677                 :          3 :         CU_ASSERT(cb_arg.type == 0);
    4678                 :          3 :         CU_ASSERT(cb_arg.iov.iov_base == (void *)0x0);
    4679                 :          3 :         CU_ASSERT(cb_arg.iov.iov_len == 0);
    4680                 :            : 
    4681                 :            :         /* 15 + 15 = 30 reach the limit */
    4682                 :          3 :         spdk_delay_us(15 * spdk_get_ticks_hz());
    4683                 :          3 :         poll_threads();
    4684                 :          3 :         CU_ASSERT(cb_arg.type == SPDK_BDEV_IO_TYPE_WRITE);
    4685                 :          3 :         CU_ASSERT(cb_arg.iov.iov_base == (void *)0x1000);
    4686                 :          3 :         CU_ASSERT(cb_arg.iov.iov_len == 1 * bdev->blocklen);
    4687                 :          3 :         stub_complete_io(1);
    4688                 :            : 
    4689                 :            :         /* Use the same split IO above and check the IO */
    4690                 :          3 :         memset(&cb_arg, 0, sizeof(cb_arg));
    4691                 :          3 :         CU_ASSERT(spdk_bdev_write_blocks(desc, io_ch, (void *)0xF000, 14, 8, io_done, NULL) == 0);
    4692                 :            : 
    4693                 :            :         /* The first child complete in time */
    4694                 :          3 :         spdk_delay_us(15 * spdk_get_ticks_hz());
    4695                 :          3 :         poll_threads();
    4696                 :          3 :         stub_complete_io(1);
    4697                 :          3 :         CU_ASSERT(cb_arg.type == 0);
    4698                 :          3 :         CU_ASSERT(cb_arg.iov.iov_base == (void *)0x0);
    4699                 :          3 :         CU_ASSERT(cb_arg.iov.iov_len == 0);
    4700                 :            : 
    4701                 :            :         /* The second child reach the limit */
    4702                 :          3 :         spdk_delay_us(15 * spdk_get_ticks_hz());
    4703                 :          3 :         poll_threads();
    4704                 :          3 :         CU_ASSERT(cb_arg.type == SPDK_BDEV_IO_TYPE_WRITE);
    4705                 :          3 :         CU_ASSERT(cb_arg.iov.iov_base == (void *)0xF000);
    4706                 :          3 :         CU_ASSERT(cb_arg.iov.iov_len == 8 * bdev->blocklen);
    4707                 :          3 :         stub_complete_io(1);
    4708                 :            : 
    4709                 :            :         /* Also include the reset IO */
    4710                 :          3 :         memset(&cb_arg, 0, sizeof(cb_arg));
    4711                 :          3 :         CU_ASSERT(spdk_bdev_reset(desc, io_ch, io_done, NULL) == 0);
    4712                 :          3 :         spdk_delay_us(30 * spdk_get_ticks_hz());
    4713                 :          3 :         poll_threads();
    4714                 :          3 :         CU_ASSERT(cb_arg.type == SPDK_BDEV_IO_TYPE_RESET);
    4715                 :          3 :         stub_complete_io(1);
    4716                 :          3 :         poll_threads();
    4717                 :            : 
    4718                 :          3 :         spdk_put_io_channel(io_ch);
    4719                 :          3 :         spdk_bdev_close(desc);
    4720                 :          3 :         free_bdev(bdev);
    4721                 :          3 :         ut_fini_bdev();
    4722                 :          3 : }
    4723                 :            : 
    4724                 :            : static void
    4725                 :          3 : bdev_set_qd_sampling(void)
    4726                 :            : {
    4727                 :            :         struct spdk_bdev *bdev;
    4728                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    4729                 :          3 :         struct spdk_io_channel *io_ch = NULL;
    4730                 :          3 :         struct spdk_bdev_channel *bdev_ch = NULL;
    4731                 :          3 :         struct timeout_io_cb_arg cb_arg;
    4732                 :            : 
    4733                 :          3 :         ut_init_bdev(NULL);
    4734                 :          3 :         bdev = allocate_bdev("bdev");
    4735                 :            : 
    4736                 :          3 :         CU_ASSERT(spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc) == 0);
    4737         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    4738                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    4739                 :            : 
    4740                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    4741                 :          3 :         CU_ASSERT(io_ch != NULL);
    4742                 :            : 
    4743                 :          3 :         bdev_ch = spdk_io_channel_get_ctx(io_ch);
    4744                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev_ch->io_submitted));
    4745                 :            : 
    4746                 :            :         /* This is the part1.
    4747                 :            :          * We will check the bdev_ch->io_submitted list
    4748                 :            :          * TO make sure that it can link IOs and only the user submitted IOs
    4749                 :            :          */
    4750                 :          3 :         CU_ASSERT(spdk_bdev_read(desc, io_ch, (void *)0x1000, 0, 4096, io_done, NULL) == 0);
    4751                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 1);
    4752                 :          3 :         CU_ASSERT(spdk_bdev_write(desc, io_ch, (void *)0x2000, 0, 4096, io_done, NULL) == 0);
    4753                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 2);
    4754                 :          3 :         stub_complete_io(1);
    4755                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 1);
    4756                 :          3 :         stub_complete_io(1);
    4757                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 0);
    4758                 :            : 
    4759                 :            :         /* This is the part2.
    4760                 :            :          * Test the bdev's qd poller register
    4761                 :            :          */
    4762                 :            :         /* 1st Successfully set the qd sampling period */
    4763                 :          3 :         spdk_bdev_set_qd_sampling_period(bdev, 10);
    4764                 :          3 :         CU_ASSERT(bdev->internal.new_period == 10);
    4765                 :          3 :         CU_ASSERT(bdev->internal.period == 10);
    4766                 :          3 :         CU_ASSERT(bdev->internal.qd_desc != NULL);
    4767                 :          3 :         poll_threads();
    4768                 :          3 :         CU_ASSERT(bdev->internal.qd_poller != NULL);
    4769                 :            : 
    4770                 :            :         /* 2nd Change the qd sampling period */
    4771                 :          3 :         spdk_bdev_set_qd_sampling_period(bdev, 20);
    4772                 :          3 :         CU_ASSERT(bdev->internal.new_period == 20);
    4773                 :          3 :         CU_ASSERT(bdev->internal.period == 10);
    4774                 :          3 :         CU_ASSERT(bdev->internal.qd_desc != NULL);
    4775                 :          3 :         poll_threads();
    4776                 :          3 :         CU_ASSERT(bdev->internal.qd_poller != NULL);
    4777                 :          3 :         CU_ASSERT(bdev->internal.period == bdev->internal.new_period);
    4778                 :            : 
    4779                 :            :         /* 3rd Change the qd sampling period and verify qd_poll_in_progress */
    4780                 :          3 :         spdk_delay_us(20);
    4781                 :          3 :         poll_thread_times(0, 1);
    4782         [ -  + ]:          3 :         CU_ASSERT(bdev->internal.qd_poll_in_progress == true);
    4783                 :          3 :         spdk_bdev_set_qd_sampling_period(bdev, 30);
    4784                 :          3 :         CU_ASSERT(bdev->internal.new_period == 30);
    4785                 :          3 :         CU_ASSERT(bdev->internal.period == 20);
    4786                 :          3 :         poll_threads();
    4787         [ -  + ]:          3 :         CU_ASSERT(bdev->internal.qd_poll_in_progress == false);
    4788                 :          3 :         CU_ASSERT(bdev->internal.period == bdev->internal.new_period);
    4789                 :            : 
    4790                 :            :         /* 4th Disable the qd sampling period */
    4791                 :          3 :         spdk_bdev_set_qd_sampling_period(bdev, 0);
    4792                 :          3 :         CU_ASSERT(bdev->internal.new_period == 0);
    4793                 :          3 :         CU_ASSERT(bdev->internal.period == 30);
    4794                 :          3 :         poll_threads();
    4795                 :          3 :         CU_ASSERT(bdev->internal.qd_poller == NULL);
    4796                 :          3 :         CU_ASSERT(bdev->internal.period == bdev->internal.new_period);
    4797                 :          3 :         CU_ASSERT(bdev->internal.qd_desc == NULL);
    4798                 :            : 
    4799                 :            :         /* This is the part3.
    4800                 :            :          * We will test the submitted IO and reset works
    4801                 :            :          * properly with the qd sampling.
    4802                 :            :          */
    4803                 :          3 :         memset(&cb_arg, 0, sizeof(cb_arg));
    4804                 :          3 :         spdk_bdev_set_qd_sampling_period(bdev, 1);
    4805                 :          3 :         poll_threads();
    4806                 :            : 
    4807                 :          3 :         CU_ASSERT(spdk_bdev_write(desc, io_ch, (void *)0x2000, 0, 4096, io_done, NULL) == 0);
    4808                 :          3 :         CU_ASSERT(bdev_channel_count_submitted_io(bdev_ch) == 1);
    4809                 :            : 
    4810                 :            :         /* Also include the reset IO */
    4811                 :          3 :         memset(&cb_arg, 0, sizeof(cb_arg));
    4812                 :          3 :         CU_ASSERT(spdk_bdev_reset(desc, io_ch, io_done, NULL) == 0);
    4813                 :          3 :         poll_threads();
    4814                 :            : 
    4815                 :            :         /* Close the desc */
    4816                 :          3 :         spdk_put_io_channel(io_ch);
    4817                 :          3 :         spdk_bdev_close(desc);
    4818                 :            : 
    4819                 :            :         /* Complete the submitted IO and reset */
    4820                 :          3 :         stub_complete_io(2);
    4821                 :          3 :         poll_threads();
    4822                 :            : 
    4823                 :          3 :         free_bdev(bdev);
    4824                 :          3 :         ut_fini_bdev();
    4825                 :          3 : }
    4826                 :            : 
    4827                 :            : static void
    4828                 :          3 : lba_range_overlap(void)
    4829                 :            : {
    4830                 :          3 :         struct lba_range r1, r2;
    4831                 :            : 
    4832                 :          3 :         r1.offset = 100;
    4833                 :          3 :         r1.length = 50;
    4834                 :            : 
    4835                 :          3 :         r2.offset = 0;
    4836                 :          3 :         r2.length = 1;
    4837                 :          3 :         CU_ASSERT(!bdev_lba_range_overlapped(&r1, &r2));
    4838                 :            : 
    4839                 :          3 :         r2.offset = 0;
    4840                 :          3 :         r2.length = 100;
    4841                 :          3 :         CU_ASSERT(!bdev_lba_range_overlapped(&r1, &r2));
    4842                 :            : 
    4843                 :          3 :         r2.offset = 0;
    4844                 :          3 :         r2.length = 110;
    4845                 :          3 :         CU_ASSERT(bdev_lba_range_overlapped(&r1, &r2));
    4846                 :            : 
    4847                 :          3 :         r2.offset = 100;
    4848                 :          3 :         r2.length = 10;
    4849                 :          3 :         CU_ASSERT(bdev_lba_range_overlapped(&r1, &r2));
    4850                 :            : 
    4851                 :          3 :         r2.offset = 110;
    4852                 :          3 :         r2.length = 20;
    4853                 :          3 :         CU_ASSERT(bdev_lba_range_overlapped(&r1, &r2));
    4854                 :            : 
    4855                 :          3 :         r2.offset = 140;
    4856                 :          3 :         r2.length = 150;
    4857                 :          3 :         CU_ASSERT(bdev_lba_range_overlapped(&r1, &r2));
    4858                 :            : 
    4859                 :          3 :         r2.offset = 130;
    4860                 :          3 :         r2.length = 200;
    4861                 :          3 :         CU_ASSERT(bdev_lba_range_overlapped(&r1, &r2));
    4862                 :            : 
    4863                 :          3 :         r2.offset = 150;
    4864                 :          3 :         r2.length = 100;
    4865                 :          3 :         CU_ASSERT(!bdev_lba_range_overlapped(&r1, &r2));
    4866                 :            : 
    4867                 :          3 :         r2.offset = 110;
    4868                 :          3 :         r2.length = 0;
    4869                 :          3 :         CU_ASSERT(!bdev_lba_range_overlapped(&r1, &r2));
    4870                 :          3 : }
    4871                 :            : 
    4872                 :            : static bool g_lock_lba_range_done;
    4873                 :            : static bool g_unlock_lba_range_done;
    4874                 :            : 
    4875                 :            : static void
    4876                 :         24 : lock_lba_range_done(struct lba_range *range, void *ctx, int status)
    4877                 :            : {
    4878                 :         24 :         g_lock_lba_range_done = true;
    4879                 :         24 : }
    4880                 :            : 
    4881                 :            : static void
    4882                 :         18 : unlock_lba_range_done(struct lba_range *range, void *ctx, int status)
    4883                 :            : {
    4884                 :         18 :         g_unlock_lba_range_done = true;
    4885                 :         18 : }
    4886                 :            : 
    4887                 :            : static void
    4888                 :          3 : lock_lba_range_check_ranges(void)
    4889                 :            : {
    4890                 :            :         struct spdk_bdev *bdev;
    4891                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    4892                 :            :         struct spdk_io_channel *io_ch;
    4893                 :            :         struct spdk_bdev_channel *channel;
    4894                 :            :         struct lba_range *range;
    4895                 :          3 :         int ctx1;
    4896                 :            :         int rc;
    4897                 :            : 
    4898                 :          3 :         ut_init_bdev(NULL);
    4899                 :          3 :         bdev = allocate_bdev("bdev0");
    4900                 :            : 
    4901                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    4902                 :          3 :         CU_ASSERT(rc == 0);
    4903                 :          3 :         CU_ASSERT(desc != NULL);
    4904                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    4905                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    4906                 :          3 :         CU_ASSERT(io_ch != NULL);
    4907                 :          3 :         channel = spdk_io_channel_get_ctx(io_ch);
    4908                 :            : 
    4909                 :          3 :         g_lock_lba_range_done = false;
    4910                 :          3 :         rc = bdev_lock_lba_range(desc, io_ch, 20, 10, lock_lba_range_done, &ctx1);
    4911                 :          3 :         CU_ASSERT(rc == 0);
    4912                 :          3 :         poll_threads();
    4913                 :            : 
    4914         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == true);
    4915                 :          3 :         range = TAILQ_FIRST(&channel->locked_ranges);
    4916         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    4917                 :          3 :         CU_ASSERT(range->offset == 20);
    4918                 :          3 :         CU_ASSERT(range->length == 10);
    4919                 :          3 :         CU_ASSERT(range->owner_ch == channel);
    4920                 :            : 
    4921                 :            :         /* Unlocks must exactly match a lock. */
    4922                 :          3 :         g_unlock_lba_range_done = false;
    4923                 :          3 :         rc = bdev_unlock_lba_range(desc, io_ch, 20, 1, unlock_lba_range_done, &ctx1);
    4924                 :          3 :         CU_ASSERT(rc == -EINVAL);
    4925         [ -  + ]:          3 :         CU_ASSERT(g_unlock_lba_range_done == false);
    4926                 :            : 
    4927                 :          3 :         rc = bdev_unlock_lba_range(desc, io_ch, 20, 10, unlock_lba_range_done, &ctx1);
    4928                 :          3 :         CU_ASSERT(rc == 0);
    4929                 :          3 :         spdk_delay_us(100);
    4930                 :          3 :         poll_threads();
    4931                 :            : 
    4932         [ -  + ]:          3 :         CU_ASSERT(g_unlock_lba_range_done == true);
    4933                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&channel->locked_ranges));
    4934                 :            : 
    4935                 :          3 :         spdk_put_io_channel(io_ch);
    4936                 :          3 :         spdk_bdev_close(desc);
    4937                 :          3 :         free_bdev(bdev);
    4938                 :          3 :         ut_fini_bdev();
    4939                 :          3 : }
    4940                 :            : 
    4941                 :            : static void
    4942                 :          3 : lock_lba_range_with_io_outstanding(void)
    4943                 :            : {
    4944                 :            :         struct spdk_bdev *bdev;
    4945                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    4946                 :            :         struct spdk_io_channel *io_ch;
    4947                 :            :         struct spdk_bdev_channel *channel;
    4948                 :            :         struct lba_range *range;
    4949                 :          3 :         char buf[4096];
    4950                 :          3 :         int ctx1;
    4951                 :            :         int rc;
    4952                 :            : 
    4953                 :          3 :         ut_init_bdev(NULL);
    4954                 :          3 :         bdev = allocate_bdev("bdev0");
    4955                 :            : 
    4956                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    4957                 :          3 :         CU_ASSERT(rc == 0);
    4958                 :          3 :         CU_ASSERT(desc != NULL);
    4959                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    4960                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    4961                 :          3 :         CU_ASSERT(io_ch != NULL);
    4962                 :          3 :         channel = spdk_io_channel_get_ctx(io_ch);
    4963                 :            : 
    4964                 :          3 :         g_io_done = false;
    4965                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, buf, 20, 1, io_done, &ctx1);
    4966                 :          3 :         CU_ASSERT(rc == 0);
    4967                 :            : 
    4968                 :          3 :         g_lock_lba_range_done = false;
    4969                 :          3 :         rc = bdev_lock_lba_range(desc, io_ch, 20, 10, lock_lba_range_done, &ctx1);
    4970                 :          3 :         CU_ASSERT(rc == 0);
    4971                 :          3 :         poll_threads();
    4972                 :            : 
    4973                 :            :         /* The lock should immediately become valid, since there are no outstanding
    4974                 :            :          * write I/O.
    4975                 :            :          */
    4976         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    4977         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == true);
    4978                 :          3 :         range = TAILQ_FIRST(&channel->locked_ranges);
    4979         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    4980                 :          3 :         CU_ASSERT(range->offset == 20);
    4981                 :          3 :         CU_ASSERT(range->length == 10);
    4982                 :          3 :         CU_ASSERT(range->owner_ch == channel);
    4983                 :          3 :         CU_ASSERT(range->locked_ctx == &ctx1);
    4984                 :            : 
    4985                 :          3 :         rc = bdev_unlock_lba_range(desc, io_ch, 20, 10, lock_lba_range_done, &ctx1);
    4986                 :          3 :         CU_ASSERT(rc == 0);
    4987                 :          3 :         stub_complete_io(1);
    4988                 :          3 :         spdk_delay_us(100);
    4989                 :          3 :         poll_threads();
    4990                 :            : 
    4991                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&channel->locked_ranges));
    4992                 :            : 
    4993                 :            :         /* Now try again, but with a write I/O. */
    4994                 :          3 :         g_io_done = false;
    4995                 :          3 :         rc = spdk_bdev_write_blocks(desc, io_ch, buf, 20, 1, io_done, &ctx1);
    4996                 :          3 :         CU_ASSERT(rc == 0);
    4997                 :            : 
    4998                 :          3 :         g_lock_lba_range_done = false;
    4999                 :          3 :         rc = bdev_lock_lba_range(desc, io_ch, 20, 10, lock_lba_range_done, &ctx1);
    5000                 :          3 :         CU_ASSERT(rc == 0);
    5001                 :          3 :         poll_threads();
    5002                 :            : 
    5003                 :            :         /* The lock should not be fully valid yet, since a write I/O is outstanding.
    5004                 :            :          * But note that the range should be on the channel's locked_list, to make sure no
    5005                 :            :          * new write I/O are started.
    5006                 :            :          */
    5007         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5008         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == false);
    5009                 :          3 :         range = TAILQ_FIRST(&channel->locked_ranges);
    5010         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5011                 :          3 :         CU_ASSERT(range->offset == 20);
    5012                 :          3 :         CU_ASSERT(range->length == 10);
    5013                 :            : 
    5014                 :            :         /* Complete the write I/O.  This should make the lock valid (checked by confirming
    5015                 :            :          * our callback was invoked).
    5016                 :            :          */
    5017                 :          3 :         stub_complete_io(1);
    5018                 :          3 :         spdk_delay_us(100);
    5019                 :          3 :         poll_threads();
    5020         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5021         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == true);
    5022                 :            : 
    5023                 :          3 :         rc = bdev_unlock_lba_range(desc, io_ch, 20, 10, unlock_lba_range_done, &ctx1);
    5024                 :          3 :         CU_ASSERT(rc == 0);
    5025                 :          3 :         poll_threads();
    5026                 :            : 
    5027                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&channel->locked_ranges));
    5028                 :            : 
    5029                 :          3 :         spdk_put_io_channel(io_ch);
    5030                 :          3 :         spdk_bdev_close(desc);
    5031                 :          3 :         free_bdev(bdev);
    5032                 :          3 :         ut_fini_bdev();
    5033                 :          3 : }
    5034                 :            : 
    5035                 :            : static void
    5036                 :          3 : lock_lba_range_overlapped(void)
    5037                 :            : {
    5038                 :            :         struct spdk_bdev *bdev;
    5039                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    5040                 :            :         struct spdk_io_channel *io_ch;
    5041                 :            :         struct spdk_bdev_channel *channel;
    5042                 :            :         struct lba_range *range;
    5043                 :          3 :         int ctx1;
    5044                 :            :         int rc;
    5045                 :            : 
    5046                 :          3 :         ut_init_bdev(NULL);
    5047                 :          3 :         bdev = allocate_bdev("bdev0");
    5048                 :            : 
    5049                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    5050                 :          3 :         CU_ASSERT(rc == 0);
    5051                 :          3 :         CU_ASSERT(desc != NULL);
    5052                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    5053                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    5054                 :          3 :         CU_ASSERT(io_ch != NULL);
    5055                 :          3 :         channel = spdk_io_channel_get_ctx(io_ch);
    5056                 :            : 
    5057                 :            :         /* Lock range 20-29. */
    5058                 :          3 :         g_lock_lba_range_done = false;
    5059                 :          3 :         rc = bdev_lock_lba_range(desc, io_ch, 20, 10, lock_lba_range_done, &ctx1);
    5060                 :          3 :         CU_ASSERT(rc == 0);
    5061                 :          3 :         poll_threads();
    5062                 :            : 
    5063         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == true);
    5064                 :          3 :         range = TAILQ_FIRST(&channel->locked_ranges);
    5065         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5066                 :          3 :         CU_ASSERT(range->offset == 20);
    5067                 :          3 :         CU_ASSERT(range->length == 10);
    5068                 :            : 
    5069                 :            :         /* Try to lock range 25-39.  It should not lock immediately, since it overlaps with
    5070                 :            :          * 20-29.
    5071                 :            :          */
    5072                 :          3 :         g_lock_lba_range_done = false;
    5073                 :          3 :         rc = bdev_lock_lba_range(desc, io_ch, 25, 15, lock_lba_range_done, &ctx1);
    5074                 :          3 :         CU_ASSERT(rc == 0);
    5075                 :          3 :         poll_threads();
    5076                 :            : 
    5077         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == false);
    5078                 :          3 :         range = TAILQ_FIRST(&bdev->internal.pending_locked_ranges);
    5079         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5080                 :          3 :         CU_ASSERT(range->offset == 25);
    5081                 :          3 :         CU_ASSERT(range->length == 15);
    5082                 :            : 
    5083                 :            :         /* Unlock 20-29.  This should result in range 25-39 now getting locked since it
    5084                 :            :          * no longer overlaps with an active lock.
    5085                 :            :          */
    5086                 :          3 :         g_unlock_lba_range_done = false;
    5087                 :          3 :         rc = bdev_unlock_lba_range(desc, io_ch, 20, 10, unlock_lba_range_done, &ctx1);
    5088                 :          3 :         CU_ASSERT(rc == 0);
    5089                 :          3 :         poll_threads();
    5090                 :            : 
    5091         [ -  + ]:          3 :         CU_ASSERT(g_unlock_lba_range_done == true);
    5092                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev->internal.pending_locked_ranges));
    5093                 :          3 :         range = TAILQ_FIRST(&channel->locked_ranges);
    5094         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5095                 :          3 :         CU_ASSERT(range->offset == 25);
    5096                 :          3 :         CU_ASSERT(range->length == 15);
    5097                 :            : 
    5098                 :            :         /* Lock 40-59.  This should immediately lock since it does not overlap with the
    5099                 :            :          * currently active 25-39 lock.
    5100                 :            :          */
    5101                 :          3 :         g_lock_lba_range_done = false;
    5102                 :          3 :         rc = bdev_lock_lba_range(desc, io_ch, 40, 20, lock_lba_range_done, &ctx1);
    5103                 :          3 :         CU_ASSERT(rc == 0);
    5104                 :          3 :         poll_threads();
    5105                 :            : 
    5106         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == true);
    5107                 :          3 :         range = TAILQ_FIRST(&bdev->internal.locked_ranges);
    5108         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5109                 :          3 :         range = TAILQ_NEXT(range, tailq);
    5110         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5111                 :          3 :         CU_ASSERT(range->offset == 40);
    5112                 :          3 :         CU_ASSERT(range->length == 20);
    5113                 :            : 
    5114                 :            :         /* Try to lock 35-44.  Note that this overlaps with both 25-39 and 40-59. */
    5115                 :          3 :         g_lock_lba_range_done = false;
    5116                 :          3 :         rc = bdev_lock_lba_range(desc, io_ch, 35, 10, lock_lba_range_done, &ctx1);
    5117                 :          3 :         CU_ASSERT(rc == 0);
    5118                 :          3 :         poll_threads();
    5119                 :            : 
    5120         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == false);
    5121                 :          3 :         range = TAILQ_FIRST(&bdev->internal.pending_locked_ranges);
    5122         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5123                 :          3 :         CU_ASSERT(range->offset == 35);
    5124                 :          3 :         CU_ASSERT(range->length == 10);
    5125                 :            : 
    5126                 :            :         /* Unlock 25-39.  Make sure that 35-44 is still in the pending list, since
    5127                 :            :          * the 40-59 lock is still active.
    5128                 :            :          */
    5129                 :          3 :         g_unlock_lba_range_done = false;
    5130                 :          3 :         rc = bdev_unlock_lba_range(desc, io_ch, 25, 15, unlock_lba_range_done, &ctx1);
    5131                 :          3 :         CU_ASSERT(rc == 0);
    5132                 :          3 :         poll_threads();
    5133                 :            : 
    5134         [ -  + ]:          3 :         CU_ASSERT(g_unlock_lba_range_done == true);
    5135         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == false);
    5136                 :          3 :         range = TAILQ_FIRST(&bdev->internal.pending_locked_ranges);
    5137         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5138                 :          3 :         CU_ASSERT(range->offset == 35);
    5139                 :          3 :         CU_ASSERT(range->length == 10);
    5140                 :            : 
    5141                 :            :         /* Unlock 40-59.  This should result in 35-44 now getting locked, since there are
    5142                 :            :          * no longer any active overlapping locks.
    5143                 :            :          */
    5144                 :          3 :         g_unlock_lba_range_done = false;
    5145                 :          3 :         rc = bdev_unlock_lba_range(desc, io_ch, 40, 20, unlock_lba_range_done, &ctx1);
    5146                 :          3 :         CU_ASSERT(rc == 0);
    5147                 :          3 :         poll_threads();
    5148                 :            : 
    5149         [ -  + ]:          3 :         CU_ASSERT(g_unlock_lba_range_done == true);
    5150         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == true);
    5151                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev->internal.pending_locked_ranges));
    5152                 :          3 :         range = TAILQ_FIRST(&bdev->internal.locked_ranges);
    5153         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5154                 :          3 :         CU_ASSERT(range->offset == 35);
    5155                 :          3 :         CU_ASSERT(range->length == 10);
    5156                 :            : 
    5157                 :            :         /* Finally, unlock 35-44. */
    5158                 :          3 :         g_unlock_lba_range_done = false;
    5159                 :          3 :         rc = bdev_unlock_lba_range(desc, io_ch, 35, 10, unlock_lba_range_done, &ctx1);
    5160                 :          3 :         CU_ASSERT(rc == 0);
    5161                 :          3 :         poll_threads();
    5162                 :            : 
    5163         [ -  + ]:          3 :         CU_ASSERT(g_unlock_lba_range_done == true);
    5164                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev->internal.locked_ranges));
    5165                 :            : 
    5166                 :          3 :         spdk_put_io_channel(io_ch);
    5167                 :          3 :         spdk_bdev_close(desc);
    5168                 :          3 :         free_bdev(bdev);
    5169                 :          3 :         ut_fini_bdev();
    5170                 :          3 : }
    5171                 :            : 
    5172                 :            : static void
    5173                 :          9 : bdev_quiesce_done(void *ctx, int status)
    5174                 :            : {
    5175                 :          9 :         g_lock_lba_range_done = true;
    5176                 :          9 : }
    5177                 :            : 
    5178                 :            : static void
    5179                 :         12 : bdev_unquiesce_done(void *ctx, int status)
    5180                 :            : {
    5181                 :         12 :         g_unlock_lba_range_done = true;
    5182                 :         12 : }
    5183                 :            : 
    5184                 :            : static void
    5185                 :          3 : bdev_quiesce_done_unquiesce(void *ctx, int status)
    5186                 :            : {
    5187                 :          3 :         struct spdk_bdev *bdev = ctx;
    5188                 :            :         int rc;
    5189                 :            : 
    5190                 :          3 :         g_lock_lba_range_done = true;
    5191                 :            : 
    5192                 :          3 :         rc = spdk_bdev_unquiesce(bdev, &bdev_ut_if, bdev_unquiesce_done, NULL);
    5193                 :          3 :         CU_ASSERT(rc == 0);
    5194                 :          3 : }
    5195                 :            : 
    5196                 :            : static void
    5197                 :          3 : bdev_quiesce(void)
    5198                 :            : {
    5199                 :            :         struct spdk_bdev *bdev;
    5200                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    5201                 :            :         struct spdk_io_channel *io_ch;
    5202                 :            :         struct spdk_bdev_channel *channel;
    5203                 :            :         struct lba_range *range;
    5204                 :            :         struct spdk_bdev_io *bdev_io;
    5205                 :          3 :         int ctx1;
    5206                 :            :         int rc;
    5207                 :            : 
    5208                 :          3 :         ut_init_bdev(NULL);
    5209                 :          3 :         bdev = allocate_bdev("bdev0");
    5210                 :            : 
    5211                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    5212                 :          3 :         CU_ASSERT(rc == 0);
    5213                 :          3 :         CU_ASSERT(desc != NULL);
    5214                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    5215                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    5216                 :          3 :         CU_ASSERT(io_ch != NULL);
    5217                 :          3 :         channel = spdk_io_channel_get_ctx(io_ch);
    5218                 :            : 
    5219                 :          3 :         g_lock_lba_range_done = false;
    5220                 :          3 :         rc = spdk_bdev_quiesce(bdev, &bdev_ut_if, bdev_quiesce_done, &ctx1);
    5221                 :          3 :         CU_ASSERT(rc == 0);
    5222                 :          3 :         poll_threads();
    5223                 :            : 
    5224         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == true);
    5225                 :          3 :         range = TAILQ_FIRST(&channel->locked_ranges);
    5226         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5227                 :          3 :         CU_ASSERT(range->offset == 0);
    5228                 :          3 :         CU_ASSERT(range->length == bdev->blockcnt);
    5229                 :          3 :         CU_ASSERT(range->owner_ch == NULL);
    5230                 :          3 :         range = TAILQ_FIRST(&bdev_ut_if.internal.quiesced_ranges);
    5231         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5232                 :          3 :         CU_ASSERT(range->offset == 0);
    5233                 :          3 :         CU_ASSERT(range->length == bdev->blockcnt);
    5234                 :          3 :         CU_ASSERT(range->owner_ch == NULL);
    5235                 :            : 
    5236                 :          3 :         g_unlock_lba_range_done = false;
    5237                 :          3 :         rc = spdk_bdev_unquiesce(bdev, &bdev_ut_if, bdev_unquiesce_done, &ctx1);
    5238                 :          3 :         CU_ASSERT(rc == 0);
    5239                 :          3 :         spdk_delay_us(100);
    5240                 :          3 :         poll_threads();
    5241                 :            : 
    5242         [ -  + ]:          3 :         CU_ASSERT(g_unlock_lba_range_done == true);
    5243                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&channel->locked_ranges));
    5244                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev_ut_if.internal.quiesced_ranges));
    5245                 :            : 
    5246                 :          3 :         g_lock_lba_range_done = false;
    5247                 :          3 :         rc = spdk_bdev_quiesce_range(bdev, &bdev_ut_if, 20, 10, bdev_quiesce_done, &ctx1);
    5248                 :          3 :         CU_ASSERT(rc == 0);
    5249                 :          3 :         poll_threads();
    5250                 :            : 
    5251         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == true);
    5252                 :          3 :         range = TAILQ_FIRST(&channel->locked_ranges);
    5253         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5254                 :          3 :         CU_ASSERT(range->offset == 20);
    5255                 :          3 :         CU_ASSERT(range->length == 10);
    5256                 :          3 :         CU_ASSERT(range->owner_ch == NULL);
    5257                 :          3 :         range = TAILQ_FIRST(&bdev_ut_if.internal.quiesced_ranges);
    5258         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5259                 :          3 :         CU_ASSERT(range->offset == 20);
    5260                 :          3 :         CU_ASSERT(range->length == 10);
    5261                 :          3 :         CU_ASSERT(range->owner_ch == NULL);
    5262                 :            : 
    5263                 :            :         /* Unlocks must exactly match a lock. */
    5264                 :          3 :         g_unlock_lba_range_done = false;
    5265                 :          3 :         rc = spdk_bdev_unquiesce_range(bdev, &bdev_ut_if, 20, 1, bdev_unquiesce_done, &ctx1);
    5266                 :          3 :         CU_ASSERT(rc == -EINVAL);
    5267         [ -  + ]:          3 :         CU_ASSERT(g_unlock_lba_range_done == false);
    5268                 :            : 
    5269                 :          3 :         rc = spdk_bdev_unquiesce_range(bdev, &bdev_ut_if, 20, 10, bdev_unquiesce_done, &ctx1);
    5270                 :          3 :         CU_ASSERT(rc == 0);
    5271                 :          3 :         spdk_delay_us(100);
    5272                 :          3 :         poll_threads();
    5273                 :            : 
    5274         [ -  + ]:          3 :         CU_ASSERT(g_unlock_lba_range_done == true);
    5275                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&channel->locked_ranges));
    5276                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev_ut_if.internal.quiesced_ranges));
    5277                 :            : 
    5278                 :            :         /* Test unquiesce from quiesce cb */
    5279                 :          3 :         g_lock_lba_range_done = false;
    5280                 :          3 :         g_unlock_lba_range_done = false;
    5281                 :          3 :         rc = spdk_bdev_quiesce(bdev, &bdev_ut_if, bdev_quiesce_done_unquiesce, bdev);
    5282                 :          3 :         CU_ASSERT(rc == 0);
    5283                 :          3 :         poll_threads();
    5284                 :            : 
    5285         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == true);
    5286         [ -  + ]:          3 :         CU_ASSERT(g_unlock_lba_range_done == true);
    5287                 :            : 
    5288                 :            :         /* Test quiesce with read I/O */
    5289                 :          3 :         g_lock_lba_range_done = false;
    5290                 :          3 :         g_unlock_lba_range_done = false;
    5291                 :          3 :         g_io_done = false;
    5292                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, (void *)0xF000, 20, 1, io_done, &ctx1);
    5293                 :          3 :         CU_ASSERT(rc == 0);
    5294                 :            : 
    5295                 :          3 :         rc = spdk_bdev_quiesce(bdev, &bdev_ut_if, bdev_quiesce_done, &ctx1);
    5296                 :          3 :         CU_ASSERT(rc == 0);
    5297                 :          3 :         poll_threads();
    5298                 :            : 
    5299         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5300         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == false);
    5301                 :          3 :         range = TAILQ_FIRST(&channel->locked_ranges);
    5302         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(range != NULL);
    5303                 :            : 
    5304                 :          3 :         stub_complete_io(1);
    5305                 :          3 :         spdk_delay_us(100);
    5306                 :          3 :         poll_threads();
    5307         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5308         [ -  + ]:          3 :         CU_ASSERT(g_lock_lba_range_done == true);
    5309                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&channel->io_locked));
    5310                 :            : 
    5311                 :          3 :         g_io_done = false;
    5312                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, (void *)0xF000, 20, 1, io_done, &ctx1);
    5313                 :          3 :         CU_ASSERT(rc == 0);
    5314                 :            : 
    5315                 :          3 :         bdev_io = TAILQ_FIRST(&channel->io_locked);
    5316         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(bdev_io != NULL);
    5317                 :          3 :         CU_ASSERT(bdev_io->u.bdev.offset_blocks == 20);
    5318                 :          3 :         CU_ASSERT(bdev_io->u.bdev.num_blocks == 1);
    5319                 :            : 
    5320                 :          3 :         rc = spdk_bdev_unquiesce(bdev, &bdev_ut_if, bdev_unquiesce_done, &ctx1);
    5321                 :          3 :         CU_ASSERT(rc == 0);
    5322                 :          3 :         spdk_delay_us(100);
    5323                 :          3 :         poll_threads();
    5324                 :            : 
    5325         [ -  + ]:          3 :         CU_ASSERT(g_unlock_lba_range_done == true);
    5326                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&channel->locked_ranges));
    5327                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev_ut_if.internal.quiesced_ranges));
    5328                 :            : 
    5329                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&channel->io_locked));
    5330                 :          3 :         spdk_bdev_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_SUCCESS);
    5331                 :          3 :         poll_threads();
    5332         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5333                 :            : 
    5334                 :          3 :         spdk_put_io_channel(io_ch);
    5335                 :          3 :         spdk_bdev_close(desc);
    5336                 :          3 :         free_bdev(bdev);
    5337                 :          3 :         ut_fini_bdev();
    5338                 :          3 : }
    5339                 :            : 
    5340                 :            : static void
    5341                 :         18 : abort_done(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg)
    5342                 :            : {
    5343                 :         18 :         g_abort_done = true;
    5344                 :         18 :         g_abort_status = bdev_io->internal.status;
    5345                 :         18 :         spdk_bdev_free_io(bdev_io);
    5346                 :         18 : }
    5347                 :            : 
    5348                 :            : static void
    5349                 :          3 : bdev_io_abort(void)
    5350                 :            : {
    5351                 :            :         struct spdk_bdev *bdev;
    5352                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    5353                 :            :         struct spdk_io_channel *io_ch;
    5354                 :            :         struct spdk_bdev_channel *channel;
    5355                 :            :         struct spdk_bdev_mgmt_channel *mgmt_ch;
    5356                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    5357                 :          3 :         struct iovec iov[SPDK_BDEV_IO_NUM_CHILD_IOV * 2];
    5358                 :          3 :         uint64_t io_ctx1 = 0, io_ctx2 = 0, i;
    5359                 :            :         int rc;
    5360                 :            : 
    5361                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    5362                 :          3 :         bdev_opts.bdev_io_pool_size = 7;
    5363                 :          3 :         bdev_opts.bdev_io_cache_size = 2;
    5364                 :          3 :         ut_init_bdev(&bdev_opts);
    5365                 :            : 
    5366                 :          3 :         bdev = allocate_bdev("bdev0");
    5367                 :            : 
    5368                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    5369                 :          3 :         CU_ASSERT(rc == 0);
    5370                 :          3 :         CU_ASSERT(desc != NULL);
    5371                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    5372                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    5373                 :          3 :         CU_ASSERT(io_ch != NULL);
    5374                 :          3 :         channel = spdk_io_channel_get_ctx(io_ch);
    5375                 :          3 :         mgmt_ch = channel->shared_resource->mgmt_ch;
    5376                 :            : 
    5377                 :          3 :         g_abort_done = false;
    5378                 :            : 
    5379                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_ABORT, false);
    5380                 :            : 
    5381                 :          3 :         rc = spdk_bdev_abort(desc, io_ch, &io_ctx1, abort_done, NULL);
    5382                 :          3 :         CU_ASSERT(rc == -ENOTSUP);
    5383                 :            : 
    5384                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_ABORT, true);
    5385                 :            : 
    5386                 :          3 :         rc = spdk_bdev_abort(desc, io_ch, &io_ctx2, abort_done, NULL);
    5387                 :          3 :         CU_ASSERT(rc == 0);
    5388         [ -  + ]:          3 :         CU_ASSERT(g_abort_done == true);
    5389                 :          3 :         CU_ASSERT(g_abort_status == SPDK_BDEV_IO_STATUS_FAILED);
    5390                 :            : 
    5391                 :            :         /* Test the case that the target I/O was successfully aborted. */
    5392                 :          3 :         g_io_done = false;
    5393                 :            : 
    5394                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, NULL, 0, 1, io_done, &io_ctx1);
    5395                 :          3 :         CU_ASSERT(rc == 0);
    5396         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5397                 :            : 
    5398                 :          3 :         g_abort_done = false;
    5399                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    5400                 :            : 
    5401                 :          3 :         rc = spdk_bdev_abort(desc, io_ch, &io_ctx1, abort_done, NULL);
    5402                 :          3 :         CU_ASSERT(rc == 0);
    5403         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5404                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_FAILED);
    5405                 :          3 :         stub_complete_io(1);
    5406         [ -  + ]:          3 :         CU_ASSERT(g_abort_done == true);
    5407                 :          3 :         CU_ASSERT(g_abort_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    5408                 :            : 
    5409                 :            :         /* Test the case that the target I/O was not aborted because it completed
    5410                 :            :          * in the middle of execution of the abort.
    5411                 :            :          */
    5412                 :          3 :         g_io_done = false;
    5413                 :            : 
    5414                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, NULL, 0, 1, io_done, &io_ctx1);
    5415                 :          3 :         CU_ASSERT(rc == 0);
    5416         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5417                 :            : 
    5418                 :          3 :         g_abort_done = false;
    5419                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_FAILED;
    5420                 :            : 
    5421                 :          3 :         rc = spdk_bdev_abort(desc, io_ch, &io_ctx1, abort_done, NULL);
    5422                 :          3 :         CU_ASSERT(rc == 0);
    5423         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5424                 :            : 
    5425                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    5426                 :          3 :         stub_complete_io(1);
    5427         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5428                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    5429                 :            : 
    5430                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_FAILED;
    5431                 :          3 :         stub_complete_io(1);
    5432         [ -  + ]:          3 :         CU_ASSERT(g_abort_done == true);
    5433                 :          3 :         CU_ASSERT(g_abort_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    5434                 :            : 
    5435                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    5436                 :            : 
    5437                 :          3 :         bdev->optimal_io_boundary = 16;
    5438                 :          3 :         bdev->split_on_optimal_io_boundary = true;
    5439                 :            : 
    5440                 :            :         /* Test that a single-vector command which is split is aborted correctly.
    5441                 :            :          * Offset 14, length 8, payload 0xF000
    5442                 :            :          *  Child - Offset 14, length 2, payload 0xF000
    5443                 :            :          *  Child - Offset 16, length 6, payload 0xF000 + 2 * 512
    5444                 :            :          */
    5445                 :          3 :         g_io_done = false;
    5446                 :            : 
    5447                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, (void *)0xF000, 14, 8, io_done, &io_ctx1);
    5448                 :          3 :         CU_ASSERT(rc == 0);
    5449         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5450                 :            : 
    5451                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    5452                 :            : 
    5453                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    5454                 :            : 
    5455                 :          3 :         rc = spdk_bdev_abort(desc, io_ch, &io_ctx1, abort_done, NULL);
    5456                 :          3 :         CU_ASSERT(rc == 0);
    5457         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5458                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_FAILED);
    5459                 :          3 :         stub_complete_io(2);
    5460         [ -  + ]:          3 :         CU_ASSERT(g_abort_done == true);
    5461                 :          3 :         CU_ASSERT(g_abort_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    5462                 :            : 
    5463                 :            :         /* Test that a multi-vector command that needs to be split by strip and then
    5464                 :            :          * needs to be split is aborted correctly. Abort is requested before the second
    5465                 :            :          * child I/O was submitted. The parent I/O should complete with failure without
    5466                 :            :          * submitting the second child I/O.
    5467                 :            :          */
    5468         [ +  + ]:        195 :         for (i = 0; i < SPDK_BDEV_IO_NUM_CHILD_IOV * 2; i++) {
    5469                 :        192 :                 iov[i].iov_base = (void *)((i + 1) * 0x10000);
    5470                 :        192 :                 iov[i].iov_len = 512;
    5471                 :            :         }
    5472                 :            : 
    5473                 :          3 :         bdev->optimal_io_boundary = SPDK_BDEV_IO_NUM_CHILD_IOV;
    5474                 :          3 :         g_io_done = false;
    5475                 :          3 :         rc = spdk_bdev_readv_blocks(desc, io_ch, iov, SPDK_BDEV_IO_NUM_CHILD_IOV * 2, 0,
    5476                 :            :                                     SPDK_BDEV_IO_NUM_CHILD_IOV * 2, io_done, &io_ctx1);
    5477                 :          3 :         CU_ASSERT(rc == 0);
    5478         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5479                 :            : 
    5480                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    5481                 :            : 
    5482                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    5483                 :            : 
    5484                 :          3 :         rc = spdk_bdev_abort(desc, io_ch, &io_ctx1, abort_done, NULL);
    5485                 :          3 :         CU_ASSERT(rc == 0);
    5486         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5487                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_FAILED);
    5488                 :          3 :         stub_complete_io(1);
    5489         [ -  + ]:          3 :         CU_ASSERT(g_abort_done == true);
    5490                 :          3 :         CU_ASSERT(g_abort_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    5491                 :            : 
    5492                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    5493                 :            : 
    5494                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    5495                 :            : 
    5496                 :          3 :         bdev->optimal_io_boundary = 16;
    5497                 :          3 :         g_io_done = false;
    5498                 :            : 
    5499                 :            :         /* Test that a ingle-vector command which is split is aborted correctly.
    5500                 :            :          * Differently from the above, the child abort request will be submitted
    5501                 :            :          * sequentially due to the capacity of spdk_bdev_io.
    5502                 :            :          */
    5503                 :          3 :         rc = spdk_bdev_read_blocks(desc, io_ch, (void *)0xF000, 14, 50, io_done, &io_ctx1);
    5504                 :          3 :         CU_ASSERT(rc == 0);
    5505         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5506                 :            : 
    5507                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 4);
    5508                 :            : 
    5509                 :          3 :         g_abort_done = false;
    5510                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    5511                 :            : 
    5512                 :          3 :         rc = spdk_bdev_abort(desc, io_ch, &io_ctx1, abort_done, NULL);
    5513                 :          3 :         CU_ASSERT(rc == 0);
    5514                 :          3 :         CU_ASSERT(!TAILQ_EMPTY(&mgmt_ch->io_wait_queue));
    5515                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 4);
    5516                 :            : 
    5517                 :          3 :         stub_complete_io(1);
    5518         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5519                 :          3 :         CU_ASSERT(g_io_status == SPDK_BDEV_IO_STATUS_FAILED);
    5520                 :          3 :         stub_complete_io(3);
    5521         [ -  + ]:          3 :         CU_ASSERT(g_abort_done == true);
    5522                 :          3 :         CU_ASSERT(g_abort_status == SPDK_BDEV_IO_STATUS_SUCCESS);
    5523                 :            : 
    5524                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    5525                 :            : 
    5526                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    5527                 :            : 
    5528                 :          3 :         spdk_put_io_channel(io_ch);
    5529                 :          3 :         spdk_bdev_close(desc);
    5530                 :          3 :         free_bdev(bdev);
    5531                 :          3 :         ut_fini_bdev();
    5532                 :          3 : }
    5533                 :            : 
    5534                 :            : static void
    5535                 :          3 : bdev_unmap(void)
    5536                 :            : {
    5537                 :            :         struct spdk_bdev *bdev;
    5538                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    5539                 :            :         struct spdk_io_channel *ioch;
    5540                 :            :         struct spdk_bdev_channel *bdev_ch;
    5541                 :            :         struct ut_expected_io *expected_io;
    5542                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    5543                 :            :         uint32_t i, num_outstanding;
    5544                 :            :         uint64_t offset, num_blocks, max_unmap_blocks, num_children;
    5545                 :            :         int rc;
    5546                 :            : 
    5547                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    5548                 :          3 :         bdev_opts.bdev_io_pool_size = 512;
    5549                 :          3 :         bdev_opts.bdev_io_cache_size = 64;
    5550                 :          3 :         ut_init_bdev(&bdev_opts);
    5551                 :            : 
    5552                 :          3 :         bdev = allocate_bdev("bdev");
    5553                 :            : 
    5554                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc);
    5555                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    5556         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    5557                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    5558                 :          3 :         ioch = spdk_bdev_get_io_channel(desc);
    5559         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(ioch != NULL);
    5560                 :          3 :         bdev_ch = spdk_io_channel_get_ctx(ioch);
    5561                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev_ch->io_submitted));
    5562                 :            : 
    5563                 :          3 :         fn_table.submit_request = stub_submit_request;
    5564                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    5565                 :            : 
    5566                 :            :         /* Case 1: First test the request won't be split */
    5567                 :          3 :         num_blocks = 32;
    5568                 :            : 
    5569                 :          3 :         g_io_done = false;
    5570                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_UNMAP, 0, num_blocks, 0);
    5571                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    5572                 :          3 :         rc = spdk_bdev_unmap_blocks(desc, ioch, 0, num_blocks, io_done, NULL);
    5573                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    5574         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5575                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    5576                 :          3 :         stub_complete_io(1);
    5577         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5578                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    5579                 :            : 
    5580                 :            :         /* Case 2: Test the split with 2 children requests */
    5581                 :          3 :         bdev->max_unmap = 8;
    5582                 :          3 :         bdev->max_unmap_segments = 2;
    5583                 :          3 :         max_unmap_blocks = bdev->max_unmap * bdev->max_unmap_segments;
    5584                 :          3 :         num_blocks = max_unmap_blocks * 2;
    5585                 :          3 :         offset = 0;
    5586                 :            : 
    5587                 :          3 :         g_io_done = false;
    5588         [ +  + ]:          9 :         for (i = 0; i < 2; i++) {
    5589                 :          6 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_UNMAP, offset, max_unmap_blocks, 0);
    5590                 :          6 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    5591                 :          6 :                 offset += max_unmap_blocks;
    5592                 :            :         }
    5593                 :            : 
    5594                 :          3 :         rc = spdk_bdev_unmap_blocks(desc, ioch, 0, num_blocks, io_done, NULL);
    5595                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    5596         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5597                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    5598                 :          3 :         stub_complete_io(2);
    5599         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5600                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    5601                 :            : 
    5602                 :            :         /* Case 3: Test the split with 15 children requests, will finish 8 requests first */
    5603                 :          3 :         num_children = 15;
    5604                 :          3 :         num_blocks = max_unmap_blocks * num_children;
    5605                 :          3 :         g_io_done = false;
    5606                 :          3 :         offset = 0;
    5607         [ +  + ]:         48 :         for (i = 0; i < num_children; i++) {
    5608                 :         45 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_UNMAP, offset, max_unmap_blocks, 0);
    5609                 :         45 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    5610                 :         45 :                 offset += max_unmap_blocks;
    5611                 :            :         }
    5612                 :            : 
    5613                 :          3 :         rc = spdk_bdev_unmap_blocks(desc, ioch, 0, num_blocks, io_done, NULL);
    5614                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    5615         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5616                 :            : 
    5617         [ +  + ]:          9 :         while (num_children > 0) {
    5618                 :          6 :                 num_outstanding = spdk_min(num_children, SPDK_BDEV_MAX_CHILDREN_UNMAP_WRITE_ZEROES_REQS);
    5619                 :          6 :                 CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == num_outstanding);
    5620                 :          6 :                 stub_complete_io(num_outstanding);
    5621                 :          6 :                 num_children -= num_outstanding;
    5622                 :            :         }
    5623         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5624                 :            : 
    5625                 :          3 :         spdk_put_io_channel(ioch);
    5626                 :          3 :         spdk_bdev_close(desc);
    5627                 :          3 :         free_bdev(bdev);
    5628                 :          3 :         ut_fini_bdev();
    5629                 :          3 : }
    5630                 :            : 
    5631                 :            : static void
    5632                 :          3 : bdev_write_zeroes_split_test(void)
    5633                 :            : {
    5634                 :            :         struct spdk_bdev *bdev;
    5635                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    5636                 :            :         struct spdk_io_channel *ioch;
    5637                 :            :         struct spdk_bdev_channel *bdev_ch;
    5638                 :            :         struct ut_expected_io *expected_io;
    5639                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    5640                 :            :         uint32_t i, num_outstanding;
    5641                 :            :         uint64_t offset, num_blocks, max_write_zeroes_blocks, num_children;
    5642                 :            :         int rc;
    5643                 :            : 
    5644                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    5645                 :          3 :         bdev_opts.bdev_io_pool_size = 512;
    5646                 :          3 :         bdev_opts.bdev_io_cache_size = 64;
    5647                 :          3 :         ut_init_bdev(&bdev_opts);
    5648                 :            : 
    5649                 :          3 :         bdev = allocate_bdev("bdev");
    5650                 :            : 
    5651                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc);
    5652                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    5653         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    5654                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    5655                 :          3 :         ioch = spdk_bdev_get_io_channel(desc);
    5656         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(ioch != NULL);
    5657                 :          3 :         bdev_ch = spdk_io_channel_get_ctx(ioch);
    5658                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev_ch->io_submitted));
    5659                 :            : 
    5660                 :          3 :         fn_table.submit_request = stub_submit_request;
    5661                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    5662                 :            : 
    5663                 :            :         /* Case 1: First test the request won't be split */
    5664                 :          3 :         num_blocks = 32;
    5665                 :            : 
    5666                 :          3 :         g_io_done = false;
    5667                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE_ZEROES, 0, num_blocks, 0);
    5668                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    5669                 :          3 :         rc = spdk_bdev_write_zeroes_blocks(desc, ioch, 0, num_blocks, io_done, NULL);
    5670                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    5671         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5672                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    5673                 :          3 :         stub_complete_io(1);
    5674         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5675                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    5676                 :            : 
    5677                 :            :         /* Case 2: Test the split with 2 children requests */
    5678                 :          3 :         max_write_zeroes_blocks = 8;
    5679                 :          3 :         bdev->max_write_zeroes = max_write_zeroes_blocks;
    5680                 :          3 :         num_blocks = max_write_zeroes_blocks * 2;
    5681                 :          3 :         offset = 0;
    5682                 :            : 
    5683                 :          3 :         g_io_done = false;
    5684         [ +  + ]:          9 :         for (i = 0; i < 2; i++) {
    5685                 :          6 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE_ZEROES, offset, max_write_zeroes_blocks,
    5686                 :            :                                                    0);
    5687                 :          6 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    5688                 :          6 :                 offset += max_write_zeroes_blocks;
    5689                 :            :         }
    5690                 :            : 
    5691                 :          3 :         rc = spdk_bdev_write_zeroes_blocks(desc, ioch, 0, num_blocks, io_done, NULL);
    5692                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    5693         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5694                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    5695                 :          3 :         stub_complete_io(2);
    5696         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5697                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    5698                 :            : 
    5699                 :            :         /* Case 3: Test the split with 15 children requests, will finish 8 requests first */
    5700                 :          3 :         num_children = 15;
    5701                 :          3 :         num_blocks = max_write_zeroes_blocks * num_children;
    5702                 :          3 :         g_io_done = false;
    5703                 :          3 :         offset = 0;
    5704         [ +  + ]:         48 :         for (i = 0; i < num_children; i++) {
    5705                 :         45 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE_ZEROES, offset, max_write_zeroes_blocks,
    5706                 :            :                                                    0);
    5707                 :         45 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    5708                 :         45 :                 offset += max_write_zeroes_blocks;
    5709                 :            :         }
    5710                 :            : 
    5711                 :          3 :         rc = spdk_bdev_write_zeroes_blocks(desc, ioch, 0, num_blocks, io_done, NULL);
    5712                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    5713         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5714                 :            : 
    5715         [ +  + ]:          9 :         while (num_children > 0) {
    5716                 :          6 :                 num_outstanding = spdk_min(num_children, SPDK_BDEV_MAX_CHILDREN_UNMAP_WRITE_ZEROES_REQS);
    5717                 :          6 :                 CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == num_outstanding);
    5718                 :          6 :                 stub_complete_io(num_outstanding);
    5719                 :          6 :                 num_children -= num_outstanding;
    5720                 :            :         }
    5721         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5722                 :            : 
    5723                 :          3 :         spdk_put_io_channel(ioch);
    5724                 :          3 :         spdk_bdev_close(desc);
    5725                 :          3 :         free_bdev(bdev);
    5726                 :          3 :         ut_fini_bdev();
    5727                 :          3 : }
    5728                 :            : 
    5729                 :            : static void
    5730                 :          3 : bdev_set_options_test(void)
    5731                 :            : {
    5732                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    5733                 :            :         int rc;
    5734                 :            : 
    5735                 :            :         /* Case1: Do not set opts_size */
    5736                 :          3 :         rc = spdk_bdev_set_opts(&bdev_opts);
    5737                 :          3 :         CU_ASSERT(rc == -1);
    5738                 :          3 : }
    5739                 :            : 
    5740                 :            : static struct spdk_memory_domain *g_bdev_memory_domain = (struct spdk_memory_domain *) 0xf00df00d;
    5741                 :            : 
    5742                 :            : static int
    5743                 :          9 : test_bdev_get_supported_dma_device_types_op(void *ctx, struct spdk_memory_domain **domains,
    5744                 :            :                 int array_size)
    5745                 :            : {
    5746   [ +  +  +  + ]:          9 :         if (array_size > 0 && domains) {
    5747                 :          3 :                 domains[0] = g_bdev_memory_domain;
    5748                 :            :         }
    5749                 :            : 
    5750                 :          9 :         return 1;
    5751                 :            : }
    5752                 :            : 
    5753                 :            : static void
    5754                 :          3 : bdev_get_memory_domains(void)
    5755                 :            : {
    5756                 :          3 :         struct spdk_bdev_fn_table fn_table = {
    5757                 :            :                 .get_memory_domains = test_bdev_get_supported_dma_device_types_op
    5758                 :            :         };
    5759                 :          3 :         struct spdk_bdev bdev = { .fn_table = &fn_table };
    5760                 :          3 :         struct spdk_memory_domain *domains[2] = {};
    5761                 :            :         int rc;
    5762                 :            : 
    5763                 :            :         /* bdev is NULL */
    5764                 :          3 :         rc = spdk_bdev_get_memory_domains(NULL, domains, 2);
    5765                 :          3 :         CU_ASSERT(rc == -EINVAL);
    5766                 :            : 
    5767                 :            :         /* domains is NULL */
    5768                 :          3 :         rc = spdk_bdev_get_memory_domains(&bdev, NULL, 2);
    5769                 :          3 :         CU_ASSERT(rc == 1);
    5770                 :            : 
    5771                 :            :         /* array size is 0 */
    5772                 :          3 :         rc = spdk_bdev_get_memory_domains(&bdev, domains, 0);
    5773                 :          3 :         CU_ASSERT(rc == 1);
    5774                 :            : 
    5775                 :            :         /* get_supported_dma_device_types op is set */
    5776                 :          3 :         rc = spdk_bdev_get_memory_domains(&bdev, domains, 2);
    5777                 :          3 :         CU_ASSERT(rc == 1);
    5778                 :          3 :         CU_ASSERT(domains[0] == g_bdev_memory_domain);
    5779                 :            : 
    5780                 :            :         /* get_supported_dma_device_types op is not set */
    5781                 :          3 :         fn_table.get_memory_domains = NULL;
    5782                 :          3 :         rc = spdk_bdev_get_memory_domains(&bdev, domains, 2);
    5783                 :          3 :         CU_ASSERT(rc == 0);
    5784                 :          3 : }
    5785                 :            : 
    5786                 :            : static void
    5787                 :          6 : _bdev_io_ext(struct spdk_bdev_ext_io_opts *ext_io_opts)
    5788                 :            : {
    5789                 :            :         struct spdk_bdev *bdev;
    5790                 :          6 :         struct spdk_bdev_desc *desc = NULL;
    5791                 :            :         struct spdk_io_channel *io_ch;
    5792                 :          6 :         char io_buf[512];
    5793                 :          6 :         struct iovec iov = { .iov_base = io_buf, .iov_len = 512 };
    5794                 :            :         struct ut_expected_io *expected_io;
    5795                 :            :         int rc;
    5796                 :            : 
    5797                 :          6 :         ut_init_bdev(NULL);
    5798                 :            : 
    5799                 :          6 :         bdev = allocate_bdev("bdev0");
    5800                 :          6 :         bdev->md_interleave = false;
    5801                 :          6 :         bdev->md_len = 8;
    5802                 :            : 
    5803                 :          6 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    5804                 :          6 :         CU_ASSERT(rc == 0);
    5805         [ -  + ]:          6 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    5806                 :          6 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    5807                 :          6 :         io_ch = spdk_bdev_get_io_channel(desc);
    5808                 :          6 :         CU_ASSERT(io_ch != NULL);
    5809                 :            : 
    5810                 :            :         /* read */
    5811                 :          6 :         g_io_done = false;
    5812                 :          6 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 32, 14, 1);
    5813         [ +  + ]:          6 :         if (ext_io_opts) {
    5814                 :          3 :                 expected_io->md_buf = ext_io_opts->metadata;
    5815                 :            :         }
    5816                 :          6 :         ut_expected_io_set_iov(expected_io, 0, iov.iov_base, iov.iov_len);
    5817                 :          6 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    5818                 :            : 
    5819                 :          6 :         rc = spdk_bdev_readv_blocks_ext(desc, io_ch, &iov, 1, 32, 14, io_done, NULL, ext_io_opts);
    5820                 :            : 
    5821                 :          6 :         CU_ASSERT(rc == 0);
    5822         [ -  + ]:          6 :         CU_ASSERT(g_io_done == false);
    5823                 :          6 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    5824                 :          6 :         stub_complete_io(1);
    5825         [ -  + ]:          6 :         CU_ASSERT(g_io_done == true);
    5826                 :            : 
    5827                 :            :         /* write */
    5828                 :          6 :         g_io_done = false;
    5829                 :          6 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 32, 14, 1);
    5830         [ +  + ]:          6 :         if (ext_io_opts) {
    5831                 :          3 :                 expected_io->md_buf = ext_io_opts->metadata;
    5832                 :            :         }
    5833                 :          6 :         ut_expected_io_set_iov(expected_io, 0, iov.iov_base, iov.iov_len);
    5834                 :          6 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    5835                 :            : 
    5836                 :          6 :         rc = spdk_bdev_writev_blocks_ext(desc, io_ch, &iov, 1, 32, 14, io_done, NULL, ext_io_opts);
    5837                 :            : 
    5838                 :          6 :         CU_ASSERT(rc == 0);
    5839         [ -  + ]:          6 :         CU_ASSERT(g_io_done == false);
    5840                 :          6 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    5841                 :          6 :         stub_complete_io(1);
    5842         [ -  + ]:          6 :         CU_ASSERT(g_io_done == true);
    5843                 :            : 
    5844                 :          6 :         spdk_put_io_channel(io_ch);
    5845                 :          6 :         spdk_bdev_close(desc);
    5846                 :          6 :         free_bdev(bdev);
    5847                 :          6 :         ut_fini_bdev();
    5848                 :            : 
    5849                 :          6 : }
    5850                 :            : 
    5851                 :            : static void
    5852                 :          3 : bdev_io_ext(void)
    5853                 :            : {
    5854                 :          3 :         struct spdk_bdev_ext_io_opts ext_io_opts = {
    5855                 :            :                 .metadata = (void *)0xFF000000,
    5856                 :            :                 .size = sizeof(ext_io_opts),
    5857                 :            :                 .dif_check_flags_exclude_mask = 0
    5858                 :            :         };
    5859                 :            : 
    5860                 :          3 :         _bdev_io_ext(&ext_io_opts);
    5861                 :          3 : }
    5862                 :            : 
    5863                 :            : static void
    5864                 :          3 : bdev_io_ext_no_opts(void)
    5865                 :            : {
    5866                 :          3 :         _bdev_io_ext(NULL);
    5867                 :          3 : }
    5868                 :            : 
    5869                 :            : static void
    5870                 :          3 : bdev_io_ext_invalid_opts(void)
    5871                 :            : {
    5872                 :            :         struct spdk_bdev *bdev;
    5873                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    5874                 :            :         struct spdk_io_channel *io_ch;
    5875                 :          3 :         char io_buf[512];
    5876                 :          3 :         struct iovec iov = { .iov_base = io_buf, .iov_len = 512 };
    5877                 :          3 :         struct spdk_bdev_ext_io_opts ext_io_opts = {
    5878                 :            :                 .metadata = (void *)0xFF000000,
    5879                 :            :                 .size = sizeof(ext_io_opts),
    5880                 :            :                 .dif_check_flags_exclude_mask = 0
    5881                 :            :         };
    5882                 :            :         int rc;
    5883                 :            : 
    5884                 :          3 :         ut_init_bdev(NULL);
    5885                 :            : 
    5886                 :          3 :         bdev = allocate_bdev("bdev0");
    5887                 :          3 :         bdev->md_interleave = false;
    5888                 :          3 :         bdev->md_len = 8;
    5889                 :            : 
    5890                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    5891                 :          3 :         CU_ASSERT(rc == 0);
    5892         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    5893                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    5894                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    5895                 :          3 :         CU_ASSERT(io_ch != NULL);
    5896                 :            : 
    5897                 :            :         /* Test invalid ext_opts size */
    5898                 :          3 :         ext_io_opts.size = 0;
    5899                 :          3 :         rc = spdk_bdev_readv_blocks_ext(desc, io_ch, &iov, 1, 32, 14, io_done, NULL, &ext_io_opts);
    5900                 :          3 :         CU_ASSERT(rc == -EINVAL);
    5901                 :          3 :         rc = spdk_bdev_writev_blocks_ext(desc, io_ch, &iov, 1, 32, 14, io_done, NULL, &ext_io_opts);
    5902                 :          3 :         CU_ASSERT(rc == -EINVAL);
    5903                 :            : 
    5904                 :          3 :         ext_io_opts.size = sizeof(ext_io_opts) * 2;
    5905                 :          3 :         rc = spdk_bdev_readv_blocks_ext(desc, io_ch, &iov, 1, 32, 14, io_done, NULL, &ext_io_opts);
    5906                 :          3 :         CU_ASSERT(rc == -EINVAL);
    5907                 :          3 :         rc = spdk_bdev_writev_blocks_ext(desc, io_ch, &iov, 1, 32, 14, io_done, NULL, &ext_io_opts);
    5908                 :          3 :         CU_ASSERT(rc == -EINVAL);
    5909                 :            : 
    5910                 :          3 :         ext_io_opts.size = offsetof(struct spdk_bdev_ext_io_opts, metadata) +
    5911                 :            :                            sizeof(ext_io_opts.metadata) - 1;
    5912                 :          3 :         rc = spdk_bdev_readv_blocks_ext(desc, io_ch, &iov, 1, 32, 14, io_done, NULL, &ext_io_opts);
    5913                 :          3 :         CU_ASSERT(rc == -EINVAL);
    5914                 :          3 :         rc = spdk_bdev_writev_blocks_ext(desc, io_ch, &iov, 1, 32, 14, io_done, NULL, &ext_io_opts);
    5915                 :          3 :         CU_ASSERT(rc == -EINVAL);
    5916                 :            : 
    5917                 :          3 :         spdk_put_io_channel(io_ch);
    5918                 :          3 :         spdk_bdev_close(desc);
    5919                 :          3 :         free_bdev(bdev);
    5920                 :          3 :         ut_fini_bdev();
    5921                 :          3 : }
    5922                 :            : 
    5923                 :            : static void
    5924                 :          3 : bdev_io_ext_split(void)
    5925                 :            : {
    5926                 :            :         struct spdk_bdev *bdev;
    5927                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    5928                 :            :         struct spdk_io_channel *io_ch;
    5929                 :          3 :         char io_buf[512];
    5930                 :          3 :         struct iovec iov = { .iov_base = io_buf, .iov_len = 512 };
    5931                 :            :         struct ut_expected_io *expected_io;
    5932                 :          3 :         struct spdk_bdev_ext_io_opts ext_io_opts = {
    5933                 :            :                 .metadata = (void *)0xFF000000,
    5934                 :            :                 .size = sizeof(ext_io_opts),
    5935                 :            :                 .dif_check_flags_exclude_mask = 0
    5936                 :            :         };
    5937                 :            :         int rc;
    5938                 :            : 
    5939                 :          3 :         ut_init_bdev(NULL);
    5940                 :            : 
    5941                 :          3 :         bdev = allocate_bdev("bdev0");
    5942                 :          3 :         bdev->md_interleave = false;
    5943                 :          3 :         bdev->md_len = 8;
    5944                 :            : 
    5945                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    5946                 :          3 :         CU_ASSERT(rc == 0);
    5947         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    5948                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    5949                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    5950                 :          3 :         CU_ASSERT(io_ch != NULL);
    5951                 :            : 
    5952                 :            :         /* Check that IO request with ext_opts and metadata is split correctly
    5953                 :            :          * Offset 14, length 8, payload 0xF000
    5954                 :            :          *  Child - Offset 14, length 2, payload 0xF000
    5955                 :            :          *  Child - Offset 16, length 6, payload 0xF000 + 2 * 512
    5956                 :            :          */
    5957                 :          3 :         bdev->optimal_io_boundary = 16;
    5958                 :          3 :         bdev->split_on_optimal_io_boundary = true;
    5959                 :          3 :         bdev->md_interleave = false;
    5960                 :          3 :         bdev->md_len = 8;
    5961                 :            : 
    5962                 :          3 :         iov.iov_base = (void *)0xF000;
    5963                 :          3 :         iov.iov_len = 4096;
    5964                 :          3 :         memset(&ext_io_opts, 0, sizeof(ext_io_opts));
    5965                 :          3 :         ext_io_opts.metadata = (void *)0xFF000000;
    5966                 :          3 :         ext_io_opts.size = sizeof(ext_io_opts);
    5967                 :          3 :         g_io_done = false;
    5968                 :            : 
    5969                 :            :         /* read */
    5970                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 14, 2, 1);
    5971                 :          3 :         expected_io->md_buf = ext_io_opts.metadata;
    5972                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0xF000, 2 * 512);
    5973                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    5974                 :            : 
    5975                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 16, 6, 1);
    5976                 :          3 :         expected_io->md_buf = ext_io_opts.metadata + 2 * 8;
    5977                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0xF000 + 2 * 512), 6 * 512);
    5978                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    5979                 :            : 
    5980                 :          3 :         rc = spdk_bdev_readv_blocks_ext(desc, io_ch, &iov, 1, 14, 8, io_done, NULL, &ext_io_opts);
    5981                 :          3 :         CU_ASSERT(rc == 0);
    5982         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    5983                 :            : 
    5984                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    5985                 :          3 :         stub_complete_io(2);
    5986         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    5987                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    5988                 :            : 
    5989                 :            :         /* write */
    5990                 :          3 :         g_io_done = false;
    5991                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 14, 2, 1);
    5992                 :          3 :         expected_io->md_buf = ext_io_opts.metadata;
    5993                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)0xF000, 2 * 512);
    5994                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    5995                 :            : 
    5996                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 16, 6, 1);
    5997                 :          3 :         expected_io->md_buf = ext_io_opts.metadata + 2 * 8;
    5998                 :          3 :         ut_expected_io_set_iov(expected_io, 0, (void *)(0xF000 + 2 * 512), 6 * 512);
    5999                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6000                 :            : 
    6001                 :          3 :         rc = spdk_bdev_writev_blocks_ext(desc, io_ch, &iov, 1, 14, 8, io_done, NULL, &ext_io_opts);
    6002                 :          3 :         CU_ASSERT(rc == 0);
    6003         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    6004                 :            : 
    6005                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    6006                 :          3 :         stub_complete_io(2);
    6007         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    6008                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    6009                 :            : 
    6010                 :          3 :         spdk_put_io_channel(io_ch);
    6011                 :          3 :         spdk_bdev_close(desc);
    6012                 :          3 :         free_bdev(bdev);
    6013                 :          3 :         ut_fini_bdev();
    6014                 :          3 : }
    6015                 :            : 
    6016                 :            : static void
    6017                 :          3 : bdev_io_ext_bounce_buffer(void)
    6018                 :            : {
    6019                 :            :         struct spdk_bdev *bdev;
    6020                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    6021                 :            :         struct spdk_io_channel *io_ch;
    6022                 :          3 :         char io_buf[512];
    6023                 :          3 :         struct iovec iov = { .iov_base = io_buf, .iov_len = 512 };
    6024                 :            :         struct ut_expected_io *expected_io, *aux_io;
    6025                 :          3 :         struct spdk_bdev_ext_io_opts ext_io_opts = {
    6026                 :            :                 .metadata = (void *)0xFF000000,
    6027                 :            :                 .size = sizeof(ext_io_opts),
    6028                 :            :                 .dif_check_flags_exclude_mask = 0
    6029                 :            :         };
    6030                 :            :         int rc;
    6031                 :            : 
    6032                 :          3 :         ut_init_bdev(NULL);
    6033                 :            : 
    6034                 :          3 :         bdev = allocate_bdev("bdev0");
    6035                 :          3 :         bdev->md_interleave = false;
    6036                 :          3 :         bdev->md_len = 8;
    6037                 :            : 
    6038                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    6039                 :          3 :         CU_ASSERT(rc == 0);
    6040         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    6041                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    6042                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    6043                 :          3 :         CU_ASSERT(io_ch != NULL);
    6044                 :            : 
    6045                 :            :         /* Verify data pull/push
    6046                 :            :          * bdev doesn't support memory domains, so buffers from bdev memory pool will be used */
    6047                 :          3 :         ext_io_opts.memory_domain = (struct spdk_memory_domain *)0xdeadbeef;
    6048                 :            : 
    6049                 :            :         /* read */
    6050                 :          3 :         g_io_done = false;
    6051                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 32, 14, 1);
    6052                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov.iov_base, iov.iov_len);
    6053                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6054                 :            : 
    6055                 :          3 :         rc = spdk_bdev_readv_blocks_ext(desc, io_ch, &iov, 1, 32, 14, io_done, NULL, &ext_io_opts);
    6056                 :            : 
    6057                 :          3 :         CU_ASSERT(rc == 0);
    6058         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    6059                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    6060                 :          3 :         stub_complete_io(1);
    6061         [ -  + ]:          3 :         CU_ASSERT(g_memory_domain_push_data_called == true);
    6062         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    6063                 :            : 
    6064                 :            :         /* write */
    6065                 :          3 :         g_io_done = false;
    6066                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 32, 14, 1);
    6067                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov.iov_base, iov.iov_len);
    6068                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6069                 :            : 
    6070                 :          3 :         rc = spdk_bdev_writev_blocks_ext(desc, io_ch, &iov, 1, 32, 14, io_done, NULL, &ext_io_opts);
    6071                 :            : 
    6072                 :          3 :         CU_ASSERT(rc == 0);
    6073         [ -  + ]:          3 :         CU_ASSERT(g_memory_domain_pull_data_called == true);
    6074         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    6075                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    6076                 :          3 :         stub_complete_io(1);
    6077         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    6078                 :            : 
    6079                 :            :         /* Verify the request is queued after receiving ENOMEM from pull */
    6080                 :          3 :         g_io_done = false;
    6081                 :          3 :         aux_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 32, 14, 1);
    6082                 :          3 :         ut_expected_io_set_iov(aux_io, 0, iov.iov_base, iov.iov_len);
    6083                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, aux_io, link);
    6084                 :          3 :         rc = spdk_bdev_writev_blocks(desc, io_ch, &iov, 1, 32, 14, io_done, NULL);
    6085                 :          3 :         CU_ASSERT(rc == 0);
    6086         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    6087                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    6088                 :            : 
    6089                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 32, 14, 1);
    6090                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov.iov_base, iov.iov_len);
    6091                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6092                 :            : 
    6093                 :          3 :         MOCK_SET(spdk_memory_domain_pull_data, -ENOMEM);
    6094                 :          3 :         rc = spdk_bdev_writev_blocks_ext(desc, io_ch, &iov, 1, 32, 14, io_done, NULL, &ext_io_opts);
    6095                 :          3 :         CU_ASSERT(rc == 0);
    6096         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    6097                 :            :         /* The second IO has been queued */
    6098                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    6099                 :            : 
    6100   [ -  -  -  + ]:          3 :         MOCK_CLEAR(spdk_memory_domain_pull_data);
    6101                 :          3 :         g_memory_domain_pull_data_called = false;
    6102                 :          3 :         stub_complete_io(1);
    6103         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    6104         [ -  + ]:          3 :         CU_ASSERT(g_memory_domain_pull_data_called == true);
    6105                 :            :         /* The second IO should be submitted now */
    6106                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    6107                 :          3 :         g_io_done = false;
    6108                 :          3 :         stub_complete_io(1);
    6109         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    6110                 :            : 
    6111                 :            :         /* Verify the request is queued after receiving ENOMEM from push */
    6112                 :          3 :         g_io_done = false;
    6113                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, 32, 14, 1);
    6114                 :          3 :         ut_expected_io_set_iov(expected_io, 0, iov.iov_base, iov.iov_len);
    6115                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6116                 :            : 
    6117                 :          3 :         MOCK_SET(spdk_memory_domain_push_data, -ENOMEM);
    6118                 :          3 :         rc = spdk_bdev_readv_blocks_ext(desc, io_ch, &iov, 1, 32, 14, io_done, NULL, &ext_io_opts);
    6119                 :          3 :         CU_ASSERT(rc == 0);
    6120         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    6121                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    6122                 :            : 
    6123                 :          3 :         aux_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 32, 14, 1);
    6124                 :          3 :         ut_expected_io_set_iov(aux_io, 0, iov.iov_base, iov.iov_len);
    6125                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, aux_io, link);
    6126                 :          3 :         rc = spdk_bdev_writev_blocks(desc, io_ch, &iov, 1, 32, 14, io_done, NULL);
    6127                 :          3 :         CU_ASSERT(rc == 0);
    6128                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
    6129                 :            : 
    6130                 :          3 :         stub_complete_io(1);
    6131                 :            :         /* The IO isn't done yet, it's still waiting on push */
    6132         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    6133                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    6134   [ -  -  -  + ]:          3 :         MOCK_CLEAR(spdk_memory_domain_push_data);
    6135                 :          3 :         g_memory_domain_push_data_called = false;
    6136                 :            :         /* Completing the second IO should also trigger push on the first one */
    6137                 :          3 :         stub_complete_io(1);
    6138         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    6139         [ -  + ]:          3 :         CU_ASSERT(g_memory_domain_push_data_called == true);
    6140                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    6141                 :            : 
    6142                 :          3 :         spdk_put_io_channel(io_ch);
    6143                 :          3 :         spdk_bdev_close(desc);
    6144                 :          3 :         free_bdev(bdev);
    6145                 :          3 :         ut_fini_bdev();
    6146                 :          3 : }
    6147                 :            : 
    6148                 :            : static void
    6149                 :          3 : bdev_register_uuid_alias(void)
    6150                 :            : {
    6151                 :            :         struct spdk_bdev *bdev, *second;
    6152                 :          3 :         char uuid[SPDK_UUID_STRING_LEN];
    6153                 :            :         int rc;
    6154                 :            : 
    6155                 :          3 :         ut_init_bdev(NULL);
    6156                 :          3 :         bdev = allocate_bdev("bdev0");
    6157                 :            : 
    6158                 :            :         /* Make sure an UUID was generated  */
    6159                 :          3 :         CU_ASSERT_FALSE(spdk_uuid_is_null(&bdev->uuid));
    6160                 :            : 
    6161                 :            :         /* Check that an UUID alias was registered */
    6162                 :          3 :         spdk_uuid_fmt_lower(uuid, sizeof(uuid), &bdev->uuid);
    6163                 :          3 :         CU_ASSERT_EQUAL(spdk_bdev_get_by_name(uuid), bdev);
    6164                 :            : 
    6165                 :            :         /* Unregister the bdev */
    6166                 :          3 :         spdk_bdev_unregister(bdev, NULL, NULL);
    6167                 :          3 :         poll_threads();
    6168                 :          3 :         CU_ASSERT_PTR_NULL(spdk_bdev_get_by_name(uuid));
    6169                 :            : 
    6170                 :            :         /* Check the same, but this time register the bdev with non-zero UUID */
    6171                 :          3 :         rc = spdk_bdev_register(bdev);
    6172                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    6173                 :          3 :         CU_ASSERT_EQUAL(spdk_bdev_get_by_name(uuid), bdev);
    6174                 :            : 
    6175                 :            :         /* Unregister the bdev */
    6176                 :          3 :         spdk_bdev_unregister(bdev, NULL, NULL);
    6177                 :          3 :         poll_threads();
    6178                 :          3 :         CU_ASSERT_PTR_NULL(spdk_bdev_get_by_name(uuid));
    6179                 :            : 
    6180                 :            :         /* Regiser the bdev using UUID as the name */
    6181                 :          3 :         bdev->name = uuid;
    6182                 :          3 :         rc = spdk_bdev_register(bdev);
    6183                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    6184                 :          3 :         CU_ASSERT_EQUAL(spdk_bdev_get_by_name(uuid), bdev);
    6185                 :            : 
    6186                 :            :         /* Unregister the bdev */
    6187                 :          3 :         spdk_bdev_unregister(bdev, NULL, NULL);
    6188                 :          3 :         poll_threads();
    6189                 :          3 :         CU_ASSERT_PTR_NULL(spdk_bdev_get_by_name(uuid));
    6190                 :            : 
    6191                 :            :         /* Check that it's not possible to register two bdevs with the same UUIDs */
    6192                 :          3 :         bdev->name = "bdev0";
    6193                 :          3 :         second = allocate_bdev("bdev1");
    6194                 :          3 :         spdk_uuid_copy(&bdev->uuid, &second->uuid);
    6195                 :          3 :         rc = spdk_bdev_register(bdev);
    6196                 :          3 :         CU_ASSERT_EQUAL(rc, -EEXIST);
    6197                 :            : 
    6198                 :            :         /* Regenerate the UUID and re-check */
    6199                 :          3 :         spdk_uuid_generate(&bdev->uuid);
    6200                 :          3 :         rc = spdk_bdev_register(bdev);
    6201                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    6202                 :            : 
    6203                 :            :         /* And check that both bdevs can be retrieved through their UUIDs */
    6204                 :          3 :         spdk_uuid_fmt_lower(uuid, sizeof(uuid), &bdev->uuid);
    6205                 :          3 :         CU_ASSERT_EQUAL(spdk_bdev_get_by_name(uuid), bdev);
    6206                 :          3 :         spdk_uuid_fmt_lower(uuid, sizeof(uuid), &second->uuid);
    6207                 :          3 :         CU_ASSERT_EQUAL(spdk_bdev_get_by_name(uuid), second);
    6208                 :            : 
    6209                 :          3 :         free_bdev(second);
    6210                 :          3 :         free_bdev(bdev);
    6211                 :          3 :         ut_fini_bdev();
    6212                 :          3 : }
    6213                 :            : 
    6214                 :            : static void
    6215                 :          3 : bdev_unregister_by_name(void)
    6216                 :            : {
    6217                 :            :         struct spdk_bdev *bdev;
    6218                 :            :         int rc;
    6219                 :            : 
    6220                 :          3 :         bdev = allocate_bdev("bdev");
    6221                 :            : 
    6222                 :          3 :         g_event_type1 = 0xFF;
    6223                 :          3 :         g_unregister_arg = NULL;
    6224                 :          3 :         g_unregister_rc = -1;
    6225                 :            : 
    6226                 :          3 :         rc = spdk_bdev_unregister_by_name("bdev1", &bdev_ut_if, bdev_unregister_cb, (void *)0x12345678);
    6227                 :          3 :         CU_ASSERT(rc == -ENODEV);
    6228                 :            : 
    6229                 :          3 :         rc = spdk_bdev_unregister_by_name("bdev", &vbdev_ut_if, bdev_unregister_cb, (void *)0x12345678);
    6230                 :          3 :         CU_ASSERT(rc == -ENODEV);
    6231                 :            : 
    6232                 :          3 :         rc = spdk_bdev_unregister_by_name("bdev", &bdev_ut_if, bdev_unregister_cb, (void *)0x12345678);
    6233                 :          3 :         CU_ASSERT(rc == 0);
    6234                 :            : 
    6235                 :            :         /* Check that unregister callback is delayed */
    6236                 :          3 :         CU_ASSERT(g_unregister_arg == NULL);
    6237                 :          3 :         CU_ASSERT(g_unregister_rc == -1);
    6238                 :            : 
    6239                 :          3 :         poll_threads();
    6240                 :            : 
    6241                 :            :         /* Event callback shall not be issued because device was closed */
    6242                 :          3 :         CU_ASSERT(g_event_type1 == 0xFF);
    6243                 :            :         /* Unregister callback is issued */
    6244                 :          3 :         CU_ASSERT(g_unregister_arg == (void *)0x12345678);
    6245                 :          3 :         CU_ASSERT(g_unregister_rc == 0);
    6246                 :            : 
    6247                 :          3 :         free_bdev(bdev);
    6248                 :          3 : }
    6249                 :            : 
    6250                 :            : static int
    6251                 :         33 : count_bdevs(void *ctx, struct spdk_bdev *bdev)
    6252                 :            : {
    6253                 :         33 :         int *count = ctx;
    6254                 :            : 
    6255                 :         33 :         (*count)++;
    6256                 :            : 
    6257                 :         33 :         return 0;
    6258                 :            : }
    6259                 :            : 
    6260                 :            : static void
    6261                 :          3 : for_each_bdev_test(void)
    6262                 :            : {
    6263                 :            :         struct spdk_bdev *bdev[8];
    6264                 :          3 :         int rc, count;
    6265                 :            : 
    6266                 :          3 :         bdev[0] = allocate_bdev("bdev0");
    6267                 :          3 :         bdev[0]->internal.status = SPDK_BDEV_STATUS_REMOVING;
    6268                 :            : 
    6269                 :          3 :         bdev[1] = allocate_bdev("bdev1");
    6270                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev[1], NULL, &bdev_ut_if);
    6271                 :          3 :         CU_ASSERT(rc == 0);
    6272                 :            : 
    6273                 :          3 :         bdev[2] = allocate_bdev("bdev2");
    6274                 :            : 
    6275                 :          3 :         bdev[3] = allocate_bdev("bdev3");
    6276                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev[3], NULL, &bdev_ut_if);
    6277                 :          3 :         CU_ASSERT(rc == 0);
    6278                 :            : 
    6279                 :          3 :         bdev[4] = allocate_bdev("bdev4");
    6280                 :            : 
    6281                 :          3 :         bdev[5] = allocate_bdev("bdev5");
    6282                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev[5], NULL, &bdev_ut_if);
    6283                 :          3 :         CU_ASSERT(rc == 0);
    6284                 :            : 
    6285                 :          3 :         bdev[6] = allocate_bdev("bdev6");
    6286                 :            : 
    6287                 :          3 :         bdev[7] = allocate_bdev("bdev7");
    6288                 :            : 
    6289                 :          3 :         count = 0;
    6290                 :          3 :         rc = spdk_for_each_bdev(&count, count_bdevs);
    6291                 :          3 :         CU_ASSERT(rc == 0);
    6292                 :          3 :         CU_ASSERT(count == 7);
    6293                 :            : 
    6294                 :          3 :         count = 0;
    6295                 :          3 :         rc = spdk_for_each_bdev_leaf(&count, count_bdevs);
    6296                 :          3 :         CU_ASSERT(rc == 0);
    6297                 :          3 :         CU_ASSERT(count == 4);
    6298                 :            : 
    6299                 :          3 :         bdev[0]->internal.status = SPDK_BDEV_STATUS_READY;
    6300                 :          3 :         free_bdev(bdev[0]);
    6301                 :          3 :         free_bdev(bdev[1]);
    6302                 :          3 :         free_bdev(bdev[2]);
    6303                 :          3 :         free_bdev(bdev[3]);
    6304                 :          3 :         free_bdev(bdev[4]);
    6305                 :          3 :         free_bdev(bdev[5]);
    6306                 :          3 :         free_bdev(bdev[6]);
    6307                 :          3 :         free_bdev(bdev[7]);
    6308                 :          3 : }
    6309                 :            : 
    6310                 :            : static void
    6311                 :          3 : bdev_seek_test(void)
    6312                 :            : {
    6313                 :            :         struct spdk_bdev *bdev;
    6314                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    6315                 :            :         struct spdk_io_channel *io_ch;
    6316                 :            :         int rc;
    6317                 :            : 
    6318                 :          3 :         ut_init_bdev(NULL);
    6319                 :          3 :         poll_threads();
    6320                 :            : 
    6321                 :          3 :         bdev = allocate_bdev("bdev0");
    6322                 :            : 
    6323                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    6324                 :          3 :         CU_ASSERT(rc == 0);
    6325                 :          3 :         poll_threads();
    6326         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    6327                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    6328                 :          3 :         io_ch = spdk_bdev_get_io_channel(desc);
    6329                 :          3 :         CU_ASSERT(io_ch != NULL);
    6330                 :            : 
    6331                 :            :         /* Seek data not supported */
    6332                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_SEEK_DATA, false);
    6333                 :          3 :         rc = spdk_bdev_seek_data(desc, io_ch, 0, bdev_seek_cb, NULL);
    6334                 :          3 :         CU_ASSERT(rc == 0);
    6335                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    6336                 :          3 :         poll_threads();
    6337                 :          3 :         CU_ASSERT(g_seek_offset == 0);
    6338                 :            : 
    6339                 :            :         /* Seek hole not supported */
    6340                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_SEEK_HOLE, false);
    6341                 :          3 :         rc = spdk_bdev_seek_hole(desc, io_ch, 0, bdev_seek_cb, NULL);
    6342                 :          3 :         CU_ASSERT(rc == 0);
    6343                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    6344                 :          3 :         poll_threads();
    6345                 :          3 :         CU_ASSERT(g_seek_offset == UINT64_MAX);
    6346                 :            : 
    6347                 :            :         /* Seek data supported */
    6348                 :          3 :         g_seek_data_offset = 12345;
    6349                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_SEEK_DATA, true);
    6350                 :          3 :         rc = spdk_bdev_seek_data(desc, io_ch, 0, bdev_seek_cb, NULL);
    6351                 :          3 :         CU_ASSERT(rc == 0);
    6352                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    6353                 :          3 :         stub_complete_io(1);
    6354                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    6355                 :          3 :         CU_ASSERT(g_seek_offset == 12345);
    6356                 :            : 
    6357                 :            :         /* Seek hole supported */
    6358                 :          3 :         g_seek_hole_offset = 67890;
    6359                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_SEEK_HOLE, true);
    6360                 :          3 :         rc = spdk_bdev_seek_hole(desc, io_ch, 0, bdev_seek_cb, NULL);
    6361                 :          3 :         CU_ASSERT(rc == 0);
    6362                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    6363                 :          3 :         stub_complete_io(1);
    6364                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    6365                 :          3 :         CU_ASSERT(g_seek_offset == 67890);
    6366                 :            : 
    6367                 :          3 :         spdk_put_io_channel(io_ch);
    6368                 :          3 :         spdk_bdev_close(desc);
    6369                 :          3 :         free_bdev(bdev);
    6370                 :          3 :         ut_fini_bdev();
    6371                 :          3 : }
    6372                 :            : 
    6373                 :            : static void
    6374                 :          3 : bdev_copy(void)
    6375                 :            : {
    6376                 :            :         struct spdk_bdev *bdev;
    6377                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    6378                 :            :         struct spdk_io_channel *ioch;
    6379                 :            :         struct ut_expected_io *expected_io;
    6380                 :            :         uint64_t src_offset, num_blocks;
    6381                 :            :         uint32_t num_completed;
    6382                 :            :         int rc;
    6383                 :            : 
    6384                 :          3 :         ut_init_bdev(NULL);
    6385                 :          3 :         bdev = allocate_bdev("bdev");
    6386                 :            : 
    6387                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc);
    6388                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    6389         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    6390                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    6391                 :          3 :         ioch = spdk_bdev_get_io_channel(desc);
    6392         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(ioch != NULL);
    6393                 :            : 
    6394                 :          3 :         fn_table.submit_request = stub_submit_request;
    6395                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    6396                 :            : 
    6397                 :            :         /* First test that if the bdev supports copy, the request won't be split */
    6398                 :          3 :         bdev->md_len = 0;
    6399                 :          3 :         bdev->blocklen = 512;
    6400                 :          3 :         num_blocks = 128;
    6401                 :          3 :         src_offset = bdev->blockcnt - num_blocks;
    6402                 :            : 
    6403                 :          3 :         expected_io = ut_alloc_expected_copy_io(SPDK_BDEV_IO_TYPE_COPY, 0, src_offset, num_blocks);
    6404                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6405                 :            : 
    6406                 :          3 :         rc = spdk_bdev_copy_blocks(desc, ioch, 0, src_offset, num_blocks, io_done, NULL);
    6407                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    6408                 :          3 :         num_completed = stub_complete_io(1);
    6409                 :          3 :         CU_ASSERT_EQUAL(num_completed, 1);
    6410                 :            : 
    6411                 :            :         /* Check that if copy is not supported it'll still work */
    6412                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, src_offset, num_blocks, 0);
    6413                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6414                 :          3 :         expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, 0, num_blocks, 0);
    6415                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6416                 :            : 
    6417                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_COPY, false);
    6418                 :            : 
    6419                 :          3 :         rc = spdk_bdev_copy_blocks(desc, ioch, 0, src_offset, num_blocks, io_done, NULL);
    6420                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    6421                 :          3 :         num_completed = stub_complete_io(1);
    6422                 :          3 :         CU_ASSERT_EQUAL(num_completed, 1);
    6423                 :          3 :         num_completed = stub_complete_io(1);
    6424                 :          3 :         CU_ASSERT_EQUAL(num_completed, 1);
    6425                 :            : 
    6426                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_COPY, true);
    6427                 :          3 :         spdk_put_io_channel(ioch);
    6428                 :          3 :         spdk_bdev_close(desc);
    6429                 :          3 :         free_bdev(bdev);
    6430                 :          3 :         ut_fini_bdev();
    6431                 :          3 : }
    6432                 :            : 
    6433                 :            : static void
    6434                 :          3 : bdev_copy_split_test(void)
    6435                 :            : {
    6436                 :            :         struct spdk_bdev *bdev;
    6437                 :          3 :         struct spdk_bdev_desc *desc = NULL;
    6438                 :            :         struct spdk_io_channel *ioch;
    6439                 :            :         struct spdk_bdev_channel *bdev_ch;
    6440                 :            :         struct ut_expected_io *expected_io;
    6441                 :          3 :         struct spdk_bdev_opts bdev_opts = {};
    6442                 :            :         uint32_t i, num_outstanding;
    6443                 :            :         uint64_t offset, src_offset, num_blocks, max_copy_blocks, num_children;
    6444                 :            :         int rc;
    6445                 :            : 
    6446                 :          3 :         spdk_bdev_get_opts(&bdev_opts, sizeof(bdev_opts));
    6447                 :          3 :         bdev_opts.bdev_io_pool_size = 512;
    6448                 :          3 :         bdev_opts.bdev_io_cache_size = 64;
    6449                 :          3 :         rc = spdk_bdev_set_opts(&bdev_opts);
    6450                 :          3 :         CU_ASSERT(rc == 0);
    6451                 :            : 
    6452                 :          3 :         ut_init_bdev(NULL);
    6453                 :          3 :         bdev = allocate_bdev("bdev");
    6454                 :            : 
    6455                 :          3 :         rc = spdk_bdev_open_ext("bdev", true, bdev_ut_event_cb, NULL, &desc);
    6456                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    6457         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    6458                 :          3 :         CU_ASSERT(bdev == spdk_bdev_desc_get_bdev(desc));
    6459                 :          3 :         ioch = spdk_bdev_get_io_channel(desc);
    6460         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(ioch != NULL);
    6461                 :          3 :         bdev_ch = spdk_io_channel_get_ctx(ioch);
    6462                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev_ch->io_submitted));
    6463                 :            : 
    6464                 :          3 :         fn_table.submit_request = stub_submit_request;
    6465                 :          3 :         g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
    6466                 :            : 
    6467                 :            :         /* Case 1: First test the request won't be split */
    6468                 :          3 :         num_blocks = 32;
    6469                 :          3 :         src_offset = bdev->blockcnt - num_blocks;
    6470                 :            : 
    6471                 :          3 :         g_io_done = false;
    6472                 :          3 :         expected_io = ut_alloc_expected_copy_io(SPDK_BDEV_IO_TYPE_COPY, 0, src_offset, num_blocks);
    6473                 :          3 :         TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6474                 :          3 :         rc = spdk_bdev_copy_blocks(desc, ioch, 0, src_offset, num_blocks, io_done, NULL);
    6475                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    6476         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    6477                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 1);
    6478                 :          3 :         stub_complete_io(1);
    6479         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    6480                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    6481                 :            : 
    6482                 :            :         /* Case 2: Test the split with 2 children requests */
    6483                 :          3 :         max_copy_blocks = 8;
    6484                 :          3 :         bdev->max_copy = max_copy_blocks;
    6485                 :          3 :         num_children = 2;
    6486                 :          3 :         num_blocks = max_copy_blocks * num_children;
    6487                 :          3 :         offset = 0;
    6488                 :          3 :         src_offset = bdev->blockcnt - num_blocks;
    6489                 :            : 
    6490                 :          3 :         g_io_done = false;
    6491         [ +  + ]:          9 :         for (i = 0; i < num_children; i++) {
    6492                 :          6 :                 expected_io = ut_alloc_expected_copy_io(SPDK_BDEV_IO_TYPE_COPY, offset,
    6493                 :            :                                                         src_offset + offset, max_copy_blocks);
    6494                 :          6 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6495                 :          6 :                 offset += max_copy_blocks;
    6496                 :            :         }
    6497                 :            : 
    6498                 :          3 :         rc = spdk_bdev_copy_blocks(desc, ioch, 0, src_offset, num_blocks, io_done, NULL);
    6499                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    6500         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    6501                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == num_children);
    6502                 :          3 :         stub_complete_io(num_children);
    6503         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    6504                 :          3 :         CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 0);
    6505                 :            : 
    6506                 :            :         /* Case 3: Test the split with 15 children requests, will finish 8 requests first */
    6507                 :          3 :         num_children = 15;
    6508                 :          3 :         num_blocks = max_copy_blocks * num_children;
    6509                 :          3 :         offset = 0;
    6510                 :          3 :         src_offset = bdev->blockcnt - num_blocks;
    6511                 :            : 
    6512                 :          3 :         g_io_done = false;
    6513         [ +  + ]:         48 :         for (i = 0; i < num_children; i++) {
    6514                 :         45 :                 expected_io = ut_alloc_expected_copy_io(SPDK_BDEV_IO_TYPE_COPY, offset,
    6515                 :            :                                                         src_offset + offset, max_copy_blocks);
    6516                 :         45 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6517                 :         45 :                 offset += max_copy_blocks;
    6518                 :            :         }
    6519                 :            : 
    6520                 :          3 :         rc = spdk_bdev_copy_blocks(desc, ioch, 0, src_offset, num_blocks, io_done, NULL);
    6521                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    6522         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    6523                 :            : 
    6524         [ +  + ]:          9 :         while (num_children > 0) {
    6525                 :          6 :                 num_outstanding = spdk_min(num_children, SPDK_BDEV_MAX_CHILDREN_COPY_REQS);
    6526                 :          6 :                 CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == num_outstanding);
    6527                 :          6 :                 stub_complete_io(num_outstanding);
    6528                 :          6 :                 num_children -= num_outstanding;
    6529                 :            :         }
    6530         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    6531                 :            : 
    6532                 :            :         /* Case 4: Same test scenario as the case 2 but the configuration is different.
    6533                 :            :          * Copy is not supported.
    6534                 :            :          */
    6535                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_COPY, false);
    6536                 :            : 
    6537                 :          3 :         num_children = 2;
    6538                 :          3 :         max_copy_blocks = spdk_bdev_get_max_copy(bdev);
    6539                 :          3 :         num_blocks = max_copy_blocks * num_children;
    6540                 :          3 :         src_offset = bdev->blockcnt - num_blocks;
    6541                 :          3 :         offset = 0;
    6542                 :            : 
    6543                 :          3 :         g_io_done = false;
    6544         [ +  + ]:          9 :         for (i = 0; i < num_children; i++) {
    6545                 :          6 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_READ, src_offset,
    6546                 :            :                                                    max_copy_blocks, 0);
    6547                 :          6 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6548                 :          6 :                 src_offset += max_copy_blocks;
    6549                 :            :         }
    6550         [ +  + ]:          9 :         for (i = 0; i < num_children; i++) {
    6551                 :          6 :                 expected_io = ut_alloc_expected_io(SPDK_BDEV_IO_TYPE_WRITE, offset,
    6552                 :            :                                                    max_copy_blocks, 0);
    6553                 :          6 :                 TAILQ_INSERT_TAIL(&g_bdev_ut_channel->expected_io, expected_io, link);
    6554                 :          6 :                 offset += max_copy_blocks;
    6555                 :            :         }
    6556                 :            : 
    6557                 :          3 :         src_offset = bdev->blockcnt - num_blocks;
    6558                 :          3 :         offset = 0;
    6559                 :            : 
    6560                 :          3 :         rc = spdk_bdev_copy_blocks(desc, ioch, offset, src_offset, num_blocks, io_done, NULL);
    6561                 :          3 :         CU_ASSERT_EQUAL(rc, 0);
    6562         [ -  + ]:          3 :         CU_ASSERT(g_io_done == false);
    6563                 :            : 
    6564         [ +  + ]:          6 :         while (num_children > 0) {
    6565                 :          3 :                 num_outstanding = spdk_min(num_children, SPDK_BDEV_MAX_CHILDREN_COPY_REQS);
    6566                 :            : 
    6567                 :            :                 /* One copy request is split into one read and one write requests. */
    6568                 :          3 :                 CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == num_outstanding);
    6569                 :          3 :                 stub_complete_io(num_outstanding);
    6570                 :          3 :                 CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == num_outstanding);
    6571                 :          3 :                 stub_complete_io(num_outstanding);
    6572                 :            : 
    6573                 :          3 :                 num_children -= num_outstanding;
    6574                 :            :         }
    6575         [ -  + ]:          3 :         CU_ASSERT(g_io_done == true);
    6576                 :            : 
    6577                 :          3 :         ut_enable_io_type(SPDK_BDEV_IO_TYPE_COPY, true);
    6578                 :            : 
    6579                 :          3 :         spdk_put_io_channel(ioch);
    6580                 :          3 :         spdk_bdev_close(desc);
    6581                 :          3 :         free_bdev(bdev);
    6582                 :          3 :         ut_fini_bdev();
    6583                 :          3 : }
    6584                 :            : 
    6585                 :            : static void
    6586                 :          3 : examine_claim_v1(struct spdk_bdev *bdev)
    6587                 :            : {
    6588                 :            :         int rc;
    6589                 :            : 
    6590                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev, NULL, &vbdev_ut_if);
    6591                 :          3 :         CU_ASSERT(rc == 0);
    6592                 :          3 : }
    6593                 :            : 
    6594                 :            : static void
    6595                 :         12 : examine_no_lock_held(struct spdk_bdev *bdev)
    6596                 :            : {
    6597                 :         12 :         CU_ASSERT(!spdk_spin_held(&g_bdev_mgr.spinlock));
    6598                 :         12 :         CU_ASSERT(!spdk_spin_held(&bdev->internal.spinlock));
    6599                 :         12 : }
    6600                 :            : 
    6601                 :            : struct examine_claim_v2_ctx {
    6602                 :            :         struct ut_examine_ctx examine_ctx;
    6603                 :            :         enum spdk_bdev_claim_type claim_type;
    6604                 :            :         struct spdk_bdev_desc *desc;
    6605                 :            : };
    6606                 :            : 
    6607                 :            : static void
    6608                 :          3 : examine_claim_v2(struct spdk_bdev *bdev)
    6609                 :            : {
    6610                 :          3 :         struct examine_claim_v2_ctx *ctx = bdev->ctxt;
    6611                 :            :         int rc;
    6612                 :            : 
    6613                 :          3 :         rc = spdk_bdev_open_ext(bdev->name, false, bdev_ut_event_cb, NULL, &ctx->desc);
    6614                 :          3 :         CU_ASSERT(rc == 0);
    6615                 :            : 
    6616                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(ctx->desc, ctx->claim_type, NULL, &vbdev_ut_if);
    6617                 :          3 :         CU_ASSERT(rc == 0);
    6618                 :          3 : }
    6619                 :            : 
    6620                 :            : static void
    6621                 :          3 : examine_locks(void)
    6622                 :            : {
    6623                 :            :         struct spdk_bdev *bdev;
    6624                 :          3 :         struct ut_examine_ctx ctx = { 0 };
    6625                 :          3 :         struct examine_claim_v2_ctx v2_ctx;
    6626                 :            : 
    6627                 :            :         /* Without any claims, one code path is taken */
    6628                 :          3 :         ctx.examine_config = examine_no_lock_held;
    6629                 :          3 :         ctx.examine_disk = examine_no_lock_held;
    6630                 :          3 :         bdev = allocate_bdev_ctx("bdev0", &ctx);
    6631                 :          3 :         CU_ASSERT(ctx.examine_config_count == 1);
    6632                 :          3 :         CU_ASSERT(ctx.examine_disk_count == 1);
    6633                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6634                 :          3 :         CU_ASSERT(bdev->internal.claim.v1.module == NULL);
    6635                 :          3 :         free_bdev(bdev);
    6636                 :            : 
    6637                 :            :         /* Exercise another path that is taken when examine_config() takes a v1 claim. */
    6638         [ -  + ]:          3 :         memset(&ctx, 0, sizeof(ctx));
    6639                 :          3 :         ctx.examine_config = examine_claim_v1;
    6640                 :          3 :         ctx.examine_disk = examine_no_lock_held;
    6641                 :          3 :         bdev = allocate_bdev_ctx("bdev0", &ctx);
    6642                 :          3 :         CU_ASSERT(ctx.examine_config_count == 1);
    6643                 :          3 :         CU_ASSERT(ctx.examine_disk_count == 1);
    6644                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_EXCL_WRITE);
    6645                 :          3 :         CU_ASSERT(bdev->internal.claim.v1.module == &vbdev_ut_if);
    6646                 :          3 :         spdk_bdev_module_release_bdev(bdev);
    6647                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6648                 :          3 :         CU_ASSERT(bdev->internal.claim.v1.module == NULL);
    6649                 :          3 :         free_bdev(bdev);
    6650                 :            : 
    6651                 :            :         /* Exercise the final path that comes with v2 claims. */
    6652         [ -  + ]:          3 :         memset(&v2_ctx, 0, sizeof(v2_ctx));
    6653                 :          3 :         v2_ctx.examine_ctx.examine_config = examine_claim_v2;
    6654                 :          3 :         v2_ctx.examine_ctx.examine_disk = examine_no_lock_held;
    6655                 :          3 :         v2_ctx.claim_type = SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE;
    6656                 :          3 :         bdev = allocate_bdev_ctx("bdev0", &v2_ctx);
    6657                 :          3 :         CU_ASSERT(v2_ctx.examine_ctx.examine_config_count == 1);
    6658                 :          3 :         CU_ASSERT(v2_ctx.examine_ctx.examine_disk_count == 1);
    6659                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE);
    6660                 :          3 :         spdk_bdev_close(v2_ctx.desc);
    6661                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6662                 :          3 :         free_bdev(bdev);
    6663                 :          3 : }
    6664                 :            : 
    6665                 :            : #define UT_ASSERT_CLAIM_V2_COUNT(bdev, expect) \
    6666                 :            :         do { \
    6667                 :            :                 uint32_t len = 0; \
    6668                 :            :                 struct spdk_bdev_module_claim *claim; \
    6669                 :            :                 TAILQ_FOREACH(claim, &bdev->internal.claim.v2.claims, link) { \
    6670                 :            :                         len++; \
    6671                 :            :                 } \
    6672                 :            :                 CU_ASSERT(len == expect); \
    6673                 :            :         } while (0)
    6674                 :            : 
    6675                 :            : static void
    6676                 :          3 : claim_v2_rwo(void)
    6677                 :            : {
    6678                 :            :         struct spdk_bdev *bdev;
    6679                 :          3 :         struct spdk_bdev_desc *desc;
    6680                 :          3 :         struct spdk_bdev_desc *desc2;
    6681                 :          3 :         struct spdk_bdev_claim_opts opts;
    6682                 :            :         int rc;
    6683                 :            : 
    6684                 :          3 :         bdev = allocate_bdev("bdev0");
    6685                 :            : 
    6686                 :            :         /* Claim without options */
    6687                 :          3 :         desc = NULL;
    6688                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    6689                 :          3 :         CU_ASSERT(rc == 0);
    6690         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    6691                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc, SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE, NULL,
    6692                 :            :                                               &bdev_ut_if);
    6693                 :          3 :         CU_ASSERT(rc == 0);
    6694                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE);
    6695                 :          3 :         CU_ASSERT(desc->claim != NULL);
    6696                 :          3 :         CU_ASSERT(desc->claim->module == &bdev_ut_if);
    6697                 :          3 :         CU_ASSERT(strcmp(desc->claim->name, "") == 0);
    6698                 :          3 :         CU_ASSERT(TAILQ_FIRST(&bdev->internal.claim.v2.claims) == desc->claim);
    6699         [ +  + ]:          6 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 1);
    6700                 :            : 
    6701                 :            :         /* Release the claim by closing the descriptor */
    6702                 :          3 :         spdk_bdev_close(desc);
    6703                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6704                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev->internal.open_descs));
    6705         [ -  + ]:          3 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 0);
    6706                 :            : 
    6707                 :            :         /* Claim with options */
    6708                 :          3 :         spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    6709                 :          3 :         snprintf(opts.name, sizeof(opts.name), "%s", "claim with options");
    6710                 :          3 :         desc = NULL;
    6711                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    6712                 :          3 :         CU_ASSERT(rc == 0);
    6713         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    6714                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc, SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE, &opts,
    6715                 :            :                                               &bdev_ut_if);
    6716                 :          3 :         CU_ASSERT(rc == 0);
    6717                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE);
    6718                 :          3 :         CU_ASSERT(desc->claim != NULL);
    6719                 :          3 :         CU_ASSERT(desc->claim->module == &bdev_ut_if);
    6720         [ -  + ]:          3 :         CU_ASSERT(strcmp(desc->claim->name, "claim with options") == 0);
    6721                 :          3 :         memset(&opts, 0, sizeof(opts));
    6722         [ -  + ]:          3 :         CU_ASSERT(strcmp(desc->claim->name, "claim with options") == 0);
    6723                 :          3 :         CU_ASSERT(TAILQ_FIRST(&bdev->internal.claim.v2.claims) == desc->claim);
    6724         [ +  + ]:          6 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 1);
    6725                 :            : 
    6726                 :            :         /* The claim blocks new writers. */
    6727                 :          3 :         desc2 = NULL;
    6728                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc2);
    6729                 :          3 :         CU_ASSERT(rc == -EPERM);
    6730                 :          3 :         CU_ASSERT(desc2 == NULL);
    6731                 :            : 
    6732                 :            :         /* New readers are allowed */
    6733                 :          3 :         desc2 = NULL;
    6734                 :          3 :         rc = spdk_bdev_open_ext("bdev0", false, bdev_ut_event_cb, NULL, &desc2);
    6735                 :          3 :         CU_ASSERT(rc == 0);
    6736                 :          3 :         CU_ASSERT(desc2 != NULL);
    6737         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    6738                 :            : 
    6739                 :            :         /* No new v2 RWO claims are allowed */
    6740                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc2, SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE, NULL,
    6741                 :            :                                               &bdev_ut_if);
    6742                 :          3 :         CU_ASSERT(rc == -EPERM);
    6743                 :            : 
    6744                 :            :         /* No new v2 ROM claims are allowed */
    6745         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    6746                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc2, SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE, NULL,
    6747                 :            :                                               &bdev_ut_if);
    6748                 :          3 :         CU_ASSERT(rc == -EPERM);
    6749         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    6750                 :            : 
    6751                 :            :         /* No new v2 RWM claims are allowed */
    6752                 :          3 :         spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    6753                 :          3 :         opts.shared_claim_key = (uint64_t)&opts;
    6754                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc2, SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED, &opts,
    6755                 :            :                                               &bdev_ut_if);
    6756                 :          3 :         CU_ASSERT(rc == -EPERM);
    6757         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    6758                 :            : 
    6759                 :            :         /* No new v1 claims are allowed */
    6760                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev, NULL, &bdev_ut_if);
    6761                 :          3 :         CU_ASSERT(rc == -EPERM);
    6762                 :            : 
    6763                 :            :         /* None of the above changed the existing claim */
    6764                 :          3 :         CU_ASSERT(TAILQ_FIRST(&bdev->internal.claim.v2.claims) == desc->claim);
    6765         [ +  + ]:          6 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 1);
    6766                 :            : 
    6767                 :            :         /* Closing the first descriptor now allows a new claim and it is promoted to rw. */
    6768                 :          3 :         spdk_bdev_close(desc);
    6769                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6770         [ -  + ]:          3 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 0);
    6771         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    6772                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc2, SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE, NULL,
    6773                 :            :                                               &bdev_ut_if);
    6774                 :          3 :         CU_ASSERT(rc == 0);
    6775                 :          3 :         CU_ASSERT(desc2->claim != NULL);
    6776         [ -  + ]:          3 :         CU_ASSERT(desc2->write);
    6777                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE);
    6778                 :          3 :         CU_ASSERT(TAILQ_FIRST(&bdev->internal.claim.v2.claims) == desc2->claim);
    6779         [ +  + ]:          6 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 1);
    6780                 :          3 :         spdk_bdev_close(desc2);
    6781                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6782         [ -  + ]:          3 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 0);
    6783                 :            : 
    6784                 :            :         /* Cannot claim with a key */
    6785                 :          3 :         desc = NULL;
    6786                 :          3 :         rc = spdk_bdev_open_ext("bdev0", false, bdev_ut_event_cb, NULL, &desc);
    6787                 :          3 :         CU_ASSERT(rc == 0);
    6788         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    6789                 :          3 :         spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    6790                 :          3 :         opts.shared_claim_key = (uint64_t)&opts;
    6791                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc, SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE, &opts,
    6792                 :            :                                               &bdev_ut_if);
    6793                 :          3 :         CU_ASSERT(rc == -EINVAL);
    6794                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6795         [ -  + ]:          3 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 0);
    6796                 :          3 :         spdk_bdev_close(desc);
    6797                 :            : 
    6798                 :            :         /* Clean up */
    6799                 :          3 :         free_bdev(bdev);
    6800                 :          3 : }
    6801                 :            : 
    6802                 :            : static void
    6803                 :          3 : claim_v2_rom(void)
    6804                 :            : {
    6805                 :            :         struct spdk_bdev *bdev;
    6806                 :          3 :         struct spdk_bdev_desc *desc;
    6807                 :          3 :         struct spdk_bdev_desc *desc2;
    6808                 :          3 :         struct spdk_bdev_claim_opts opts;
    6809                 :            :         int rc;
    6810                 :            : 
    6811                 :          3 :         bdev = allocate_bdev("bdev0");
    6812                 :            : 
    6813                 :            :         /* Claim without options */
    6814                 :          3 :         desc = NULL;
    6815                 :          3 :         rc = spdk_bdev_open_ext("bdev0", false, bdev_ut_event_cb, NULL, &desc);
    6816                 :          3 :         CU_ASSERT(rc == 0);
    6817         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    6818                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc, SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE, NULL,
    6819                 :            :                                               &bdev_ut_if);
    6820                 :          3 :         CU_ASSERT(rc == 0);
    6821                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE);
    6822                 :          3 :         CU_ASSERT(desc->claim != NULL);
    6823                 :          3 :         CU_ASSERT(desc->claim->module == &bdev_ut_if);
    6824                 :          3 :         CU_ASSERT(strcmp(desc->claim->name, "") == 0);
    6825                 :          3 :         CU_ASSERT(TAILQ_FIRST(&bdev->internal.claim.v2.claims) == desc->claim);
    6826         [ +  + ]:          6 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 1);
    6827                 :            : 
    6828                 :            :         /* Release the claim by closing the descriptor */
    6829                 :          3 :         spdk_bdev_close(desc);
    6830                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6831                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev->internal.open_descs));
    6832                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6833         [ -  + ]:          3 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 0);
    6834                 :            : 
    6835                 :            :         /* Claim with options */
    6836                 :          3 :         spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    6837                 :          3 :         snprintf(opts.name, sizeof(opts.name), "%s", "claim with options");
    6838                 :          3 :         desc = NULL;
    6839                 :          3 :         rc = spdk_bdev_open_ext("bdev0", false, bdev_ut_event_cb, NULL, &desc);
    6840                 :          3 :         CU_ASSERT(rc == 0);
    6841         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    6842                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc, SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE, &opts,
    6843                 :            :                                               &bdev_ut_if);
    6844                 :          3 :         CU_ASSERT(rc == 0);
    6845                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE);
    6846         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc->claim != NULL);
    6847                 :          3 :         CU_ASSERT(desc->claim->module == &bdev_ut_if);
    6848         [ -  + ]:          3 :         CU_ASSERT(strcmp(desc->claim->name, "claim with options") == 0);
    6849                 :          3 :         memset(&opts, 0, sizeof(opts));
    6850         [ -  + ]:          3 :         CU_ASSERT(strcmp(desc->claim->name, "claim with options") == 0);
    6851                 :          3 :         CU_ASSERT(TAILQ_FIRST(&bdev->internal.claim.v2.claims) == desc->claim);
    6852         [ +  + ]:          6 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 1);
    6853                 :            : 
    6854                 :            :         /* The claim blocks new writers. */
    6855                 :          3 :         desc2 = NULL;
    6856                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc2);
    6857                 :          3 :         CU_ASSERT(rc == -EPERM);
    6858                 :          3 :         CU_ASSERT(desc2 == NULL);
    6859                 :            : 
    6860                 :            :         /* New readers are allowed */
    6861                 :          3 :         desc2 = NULL;
    6862                 :          3 :         rc = spdk_bdev_open_ext("bdev0", false, bdev_ut_event_cb, NULL, &desc2);
    6863                 :          3 :         CU_ASSERT(rc == 0);
    6864                 :          3 :         CU_ASSERT(desc2 != NULL);
    6865         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    6866                 :            : 
    6867                 :            :         /* No new v2 RWO claims are allowed */
    6868                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc2, SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE, NULL,
    6869                 :            :                                               &bdev_ut_if);
    6870                 :          3 :         CU_ASSERT(rc == -EPERM);
    6871                 :            : 
    6872                 :            :         /* No new v2 RWM claims are allowed */
    6873                 :          3 :         spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    6874                 :          3 :         opts.shared_claim_key = (uint64_t)&opts;
    6875                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc2, SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED, &opts,
    6876                 :            :                                               &bdev_ut_if);
    6877                 :          3 :         CU_ASSERT(rc == -EPERM);
    6878         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    6879                 :            : 
    6880                 :            :         /* No new v1 claims are allowed */
    6881                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev, NULL, &bdev_ut_if);
    6882                 :          3 :         CU_ASSERT(rc == -EPERM);
    6883                 :            : 
    6884                 :            :         /* None of the above messed up the existing claim */
    6885                 :          3 :         CU_ASSERT(TAILQ_FIRST(&bdev->internal.claim.v2.claims) == desc->claim);
    6886         [ +  + ]:          6 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 1);
    6887                 :            : 
    6888                 :            :         /* New v2 ROM claims are allowed and the descriptor stays read-only. */
    6889         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    6890                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc2, SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE, NULL,
    6891                 :            :                                               &bdev_ut_if);
    6892                 :          3 :         CU_ASSERT(rc == 0);
    6893         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    6894                 :          3 :         CU_ASSERT(TAILQ_FIRST(&bdev->internal.claim.v2.claims) == desc->claim);
    6895                 :          3 :         CU_ASSERT(TAILQ_NEXT(desc->claim, link) == desc2->claim);
    6896         [ +  + ]:          9 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 2);
    6897                 :            : 
    6898                 :            :         /* Claim remains when closing the first descriptor */
    6899                 :          3 :         spdk_bdev_close(desc);
    6900                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE);
    6901                 :          3 :         CU_ASSERT(!TAILQ_EMPTY(&bdev->internal.open_descs));
    6902                 :          3 :         CU_ASSERT(TAILQ_FIRST(&bdev->internal.claim.v2.claims) == desc2->claim);
    6903         [ +  + ]:          6 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 1);
    6904                 :            : 
    6905                 :            :         /* Claim removed when closing the other descriptor */
    6906                 :          3 :         spdk_bdev_close(desc2);
    6907                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6908         [ -  + ]:          3 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 0);
    6909                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev->internal.open_descs));
    6910                 :            : 
    6911                 :            :         /* Cannot claim with a key */
    6912                 :          3 :         desc = NULL;
    6913                 :          3 :         rc = spdk_bdev_open_ext("bdev0", false, bdev_ut_event_cb, NULL, &desc);
    6914                 :          3 :         CU_ASSERT(rc == 0);
    6915         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    6916                 :          3 :         spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    6917                 :          3 :         opts.shared_claim_key = (uint64_t)&opts;
    6918                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc, SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE, &opts,
    6919                 :            :                                               &bdev_ut_if);
    6920                 :          3 :         CU_ASSERT(rc == -EINVAL);
    6921                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6922         [ -  + ]:          3 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 0);
    6923                 :          3 :         spdk_bdev_close(desc);
    6924                 :            : 
    6925                 :            :         /* Cannot claim with a read-write descriptor */
    6926                 :          3 :         desc = NULL;
    6927                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    6928                 :          3 :         CU_ASSERT(rc == 0);
    6929         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    6930                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc, SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE, NULL,
    6931                 :            :                                               &bdev_ut_if);
    6932                 :          3 :         CU_ASSERT(rc == -EINVAL);
    6933                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6934         [ -  + ]:          3 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 0);
    6935                 :          3 :         spdk_bdev_close(desc);
    6936                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev->internal.open_descs));
    6937                 :            : 
    6938                 :            :         /* Clean up */
    6939                 :          3 :         free_bdev(bdev);
    6940                 :          3 : }
    6941                 :            : 
    6942                 :            : static void
    6943                 :          3 : claim_v2_rwm(void)
    6944                 :            : {
    6945                 :            :         struct spdk_bdev *bdev;
    6946                 :          3 :         struct spdk_bdev_desc *desc;
    6947                 :          3 :         struct spdk_bdev_desc *desc2;
    6948                 :          3 :         struct spdk_bdev_claim_opts opts;
    6949                 :          3 :         char good_key, bad_key;
    6950                 :            :         int rc;
    6951                 :            : 
    6952                 :          3 :         bdev = allocate_bdev("bdev0");
    6953                 :            : 
    6954                 :            :         /* Claim without options should fail */
    6955                 :          3 :         desc = NULL;
    6956                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    6957                 :          3 :         CU_ASSERT(rc == 0);
    6958         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    6959                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc, SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED, NULL,
    6960                 :            :                                               &bdev_ut_if);
    6961                 :          3 :         CU_ASSERT(rc == -EINVAL);
    6962                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    6963         [ -  + ]:          3 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 0);
    6964                 :          3 :         CU_ASSERT(desc->claim == NULL);
    6965                 :            : 
    6966                 :            :         /* Claim with options */
    6967                 :          3 :         spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    6968                 :          3 :         snprintf(opts.name, sizeof(opts.name), "%s", "claim with options");
    6969                 :          3 :         opts.shared_claim_key = (uint64_t)&good_key;
    6970                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc, SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED, &opts,
    6971                 :            :                                               &bdev_ut_if);
    6972                 :          3 :         CU_ASSERT(rc == 0);
    6973                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED);
    6974         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc->claim != NULL);
    6975                 :          3 :         CU_ASSERT(desc->claim->module == &bdev_ut_if);
    6976         [ -  + ]:          3 :         CU_ASSERT(strcmp(desc->claim->name, "claim with options") == 0);
    6977                 :          3 :         memset(&opts, 0, sizeof(opts));
    6978         [ -  + ]:          3 :         CU_ASSERT(strcmp(desc->claim->name, "claim with options") == 0);
    6979                 :          3 :         CU_ASSERT(TAILQ_FIRST(&bdev->internal.claim.v2.claims) == desc->claim);
    6980         [ +  + ]:          6 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 1);
    6981                 :            : 
    6982                 :            :         /* The claim blocks new writers. */
    6983                 :          3 :         desc2 = NULL;
    6984                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc2);
    6985                 :          3 :         CU_ASSERT(rc == -EPERM);
    6986                 :          3 :         CU_ASSERT(desc2 == NULL);
    6987                 :            : 
    6988                 :            :         /* New readers are allowed */
    6989                 :          3 :         desc2 = NULL;
    6990                 :          3 :         rc = spdk_bdev_open_ext("bdev0", false, bdev_ut_event_cb, NULL, &desc2);
    6991                 :          3 :         CU_ASSERT(rc == 0);
    6992                 :          3 :         CU_ASSERT(desc2 != NULL);
    6993         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    6994                 :            : 
    6995                 :            :         /* No new v2 RWO claims are allowed */
    6996                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc2, SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE, NULL,
    6997                 :            :                                               &bdev_ut_if);
    6998                 :          3 :         CU_ASSERT(rc == -EPERM);
    6999                 :            : 
    7000                 :            :         /* No new v2 ROM claims are allowed and the descriptor stays read-only. */
    7001         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    7002                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc2, SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE, NULL,
    7003                 :            :                                               &bdev_ut_if);
    7004                 :          3 :         CU_ASSERT(rc == -EPERM);
    7005         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    7006                 :            : 
    7007                 :            :         /* No new v1 claims are allowed */
    7008                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev, NULL, &bdev_ut_if);
    7009                 :          3 :         CU_ASSERT(rc == -EPERM);
    7010                 :            : 
    7011                 :            :         /* No new v2 RWM claims are allowed if the key does not match */
    7012                 :          3 :         spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    7013                 :          3 :         opts.shared_claim_key = (uint64_t)&bad_key;
    7014                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc2, SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED, &opts,
    7015                 :            :                                               &bdev_ut_if);
    7016                 :          3 :         CU_ASSERT(rc == -EPERM);
    7017         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    7018                 :            : 
    7019                 :            :         /* None of the above messed up the existing claim */
    7020                 :          3 :         CU_ASSERT(TAILQ_FIRST(&bdev->internal.claim.v2.claims) == desc->claim);
    7021         [ +  + ]:          6 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 1);
    7022                 :            : 
    7023                 :            :         /* New v2 RWM claims are allowed and the descriptor is promoted if the key matches. */
    7024                 :          3 :         spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    7025                 :          3 :         opts.shared_claim_key = (uint64_t)&good_key;
    7026         [ -  + ]:          3 :         CU_ASSERT(!desc2->write);
    7027                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc2, SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED, &opts,
    7028                 :            :                                               &bdev_ut_if);
    7029                 :          3 :         CU_ASSERT(rc == 0);
    7030         [ -  + ]:          3 :         CU_ASSERT(desc2->write);
    7031                 :          3 :         CU_ASSERT(TAILQ_NEXT(desc->claim, link) == desc2->claim);
    7032         [ +  + ]:          9 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 2);
    7033                 :            : 
    7034                 :            :         /* Claim remains when closing the first descriptor */
    7035                 :          3 :         spdk_bdev_close(desc);
    7036                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED);
    7037                 :          3 :         CU_ASSERT(!TAILQ_EMPTY(&bdev->internal.open_descs));
    7038                 :          3 :         CU_ASSERT(TAILQ_FIRST(&bdev->internal.claim.v2.claims) == desc2->claim);
    7039         [ +  + ]:          6 :         UT_ASSERT_CLAIM_V2_COUNT(bdev, 1);
    7040                 :            : 
    7041                 :            :         /* Claim removed when closing the other descriptor */
    7042                 :          3 :         spdk_bdev_close(desc2);
    7043                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    7044                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev->internal.open_descs));
    7045                 :            : 
    7046                 :            :         /* Cannot claim without a key */
    7047                 :          3 :         desc = NULL;
    7048                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    7049                 :          3 :         CU_ASSERT(rc == 0);
    7050         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    7051                 :          3 :         spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    7052                 :          3 :         rc = spdk_bdev_module_claim_bdev_desc(desc, SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED, &opts,
    7053                 :            :                                               &bdev_ut_if);
    7054                 :          3 :         CU_ASSERT(rc == -EINVAL);
    7055                 :          3 :         spdk_bdev_close(desc);
    7056                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    7057                 :          3 :         CU_ASSERT(TAILQ_EMPTY(&bdev->internal.open_descs));
    7058                 :            : 
    7059                 :            :         /* Clean up */
    7060                 :          3 :         free_bdev(bdev);
    7061                 :          3 : }
    7062                 :            : 
    7063                 :            : static void
    7064                 :          3 : claim_v2_existing_writer(void)
    7065                 :            : {
    7066                 :            :         struct spdk_bdev *bdev;
    7067                 :          3 :         struct spdk_bdev_desc *desc;
    7068                 :          3 :         struct spdk_bdev_desc *desc2;
    7069                 :          3 :         struct spdk_bdev_claim_opts opts;
    7070                 :            :         enum spdk_bdev_claim_type type;
    7071                 :          3 :         enum spdk_bdev_claim_type types[] = {
    7072                 :            :                 SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE,
    7073                 :            :                 SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED,
    7074                 :            :                 SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE
    7075                 :            :         };
    7076                 :            :         size_t i;
    7077                 :            :         int rc;
    7078                 :            : 
    7079                 :          3 :         bdev = allocate_bdev("bdev0");
    7080                 :            : 
    7081                 :          3 :         desc = NULL;
    7082                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc);
    7083                 :          3 :         CU_ASSERT(rc == 0);
    7084         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    7085                 :          3 :         desc2 = NULL;
    7086                 :          3 :         rc = spdk_bdev_open_ext("bdev0", true, bdev_ut_event_cb, NULL, &desc2);
    7087                 :          3 :         CU_ASSERT(rc == 0);
    7088         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc2 != NULL);
    7089                 :            : 
    7090         [ +  + ]:         12 :         for (i = 0; i < SPDK_COUNTOF(types); i++) {
    7091                 :          9 :                 type = types[i];
    7092                 :          9 :                 spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    7093         [ +  + ]:          9 :                 if (type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED) {
    7094                 :          3 :                         opts.shared_claim_key = (uint64_t)&opts;
    7095                 :            :                 }
    7096                 :          9 :                 rc = spdk_bdev_module_claim_bdev_desc(desc, type, &opts, &bdev_ut_if);
    7097         [ +  + ]:          9 :                 if (type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE) {
    7098                 :          3 :                         CU_ASSERT(rc == -EINVAL);
    7099                 :            :                 } else {
    7100                 :          6 :                         CU_ASSERT(rc == -EPERM);
    7101                 :            :                 }
    7102                 :          9 :                 CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    7103                 :          9 :                 rc = spdk_bdev_module_claim_bdev_desc(desc2, type, &opts, &bdev_ut_if);
    7104         [ +  + ]:          9 :                 if (type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE) {
    7105                 :          3 :                         CU_ASSERT(rc == -EINVAL);
    7106                 :            :                 } else {
    7107                 :          6 :                         CU_ASSERT(rc == -EPERM);
    7108                 :            :                 }
    7109                 :          9 :                 CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_NONE);
    7110                 :            :         }
    7111                 :            : 
    7112                 :          3 :         spdk_bdev_close(desc);
    7113                 :          3 :         spdk_bdev_close(desc2);
    7114                 :            : 
    7115                 :            :         /* Clean up */
    7116                 :          3 :         free_bdev(bdev);
    7117                 :          3 : }
    7118                 :            : 
    7119                 :            : static void
    7120                 :          3 : claim_v2_existing_v1(void)
    7121                 :            : {
    7122                 :            :         struct spdk_bdev *bdev;
    7123                 :          3 :         struct spdk_bdev_desc *desc;
    7124                 :          3 :         struct spdk_bdev_claim_opts opts;
    7125                 :            :         enum spdk_bdev_claim_type type;
    7126                 :          3 :         enum spdk_bdev_claim_type types[] = {
    7127                 :            :                 SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE,
    7128                 :            :                 SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED,
    7129                 :            :                 SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE
    7130                 :            :         };
    7131                 :            :         size_t i;
    7132                 :            :         int rc;
    7133                 :            : 
    7134                 :          3 :         bdev = allocate_bdev("bdev0");
    7135                 :            : 
    7136                 :          3 :         rc = spdk_bdev_module_claim_bdev(bdev, NULL, &bdev_ut_if);
    7137                 :          3 :         CU_ASSERT(rc == 0);
    7138                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_EXCL_WRITE);
    7139                 :            : 
    7140                 :          3 :         desc = NULL;
    7141                 :          3 :         rc = spdk_bdev_open_ext("bdev0", false, bdev_ut_event_cb, NULL, &desc);
    7142                 :          3 :         CU_ASSERT(rc == 0);
    7143         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(desc != NULL);
    7144                 :            : 
    7145         [ +  + ]:         12 :         for (i = 0; i < SPDK_COUNTOF(types); i++) {
    7146                 :          9 :                 type = types[i];
    7147                 :          9 :                 spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    7148         [ +  + ]:          9 :                 if (type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED) {
    7149                 :          3 :                         opts.shared_claim_key = (uint64_t)&opts;
    7150                 :            :                 }
    7151                 :          9 :                 rc = spdk_bdev_module_claim_bdev_desc(desc, type, &opts, &bdev_ut_if);
    7152                 :          9 :                 CU_ASSERT(rc == -EPERM);
    7153                 :          9 :                 CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_EXCL_WRITE);
    7154                 :            :         }
    7155                 :            : 
    7156                 :          3 :         spdk_bdev_module_release_bdev(bdev);
    7157                 :          3 :         spdk_bdev_close(desc);
    7158                 :            : 
    7159                 :            :         /* Clean up */
    7160                 :          3 :         free_bdev(bdev);
    7161                 :          3 : }
    7162                 :            : 
    7163                 :            : static void
    7164                 :          3 : claim_v1_existing_v2(void)
    7165                 :            : {
    7166                 :            :         struct spdk_bdev *bdev;
    7167                 :          3 :         struct spdk_bdev_desc *desc;
    7168                 :          3 :         struct spdk_bdev_claim_opts opts;
    7169                 :            :         enum spdk_bdev_claim_type type;
    7170                 :          3 :         enum spdk_bdev_claim_type types[] = {
    7171                 :            :                 SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE,
    7172                 :            :                 SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED,
    7173                 :            :                 SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE
    7174                 :            :         };
    7175                 :            :         size_t i;
    7176                 :            :         int rc;
    7177                 :            : 
    7178                 :          3 :         bdev = allocate_bdev("bdev0");
    7179                 :            : 
    7180         [ +  + ]:         12 :         for (i = 0; i < SPDK_COUNTOF(types); i++) {
    7181                 :          9 :                 type = types[i];
    7182                 :            : 
    7183                 :          9 :                 desc = NULL;
    7184                 :          9 :                 rc = spdk_bdev_open_ext("bdev0", false, bdev_ut_event_cb, NULL, &desc);
    7185                 :          9 :                 CU_ASSERT(rc == 0);
    7186         [ -  + ]:          9 :                 SPDK_CU_ASSERT_FATAL(desc != NULL);
    7187                 :            : 
    7188                 :            :                 /* Get a v2 claim */
    7189                 :          9 :                 spdk_bdev_claim_opts_init(&opts, sizeof(opts));
    7190         [ +  + ]:          9 :                 if (type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_SHARED) {
    7191                 :          3 :                         opts.shared_claim_key = (uint64_t)&opts;
    7192                 :            :                 }
    7193                 :          9 :                 rc = spdk_bdev_module_claim_bdev_desc(desc, type, &opts, &bdev_ut_if);
    7194                 :          9 :                 CU_ASSERT(rc == 0);
    7195                 :            : 
    7196                 :            :                 /* Fail to get a v1 claim */
    7197                 :          9 :                 rc = spdk_bdev_module_claim_bdev(bdev, NULL, &bdev_ut_if);
    7198                 :          9 :                 CU_ASSERT(rc == -EPERM);
    7199                 :            : 
    7200                 :          9 :                 spdk_bdev_close(desc);
    7201                 :            : 
    7202                 :            :                 /* Now v1 succeeds */
    7203                 :          9 :                 rc = spdk_bdev_module_claim_bdev(bdev, NULL, &bdev_ut_if);
    7204                 :          9 :                 CU_ASSERT(rc == 0)
    7205                 :          9 :                 spdk_bdev_module_release_bdev(bdev);
    7206                 :            :         }
    7207                 :            : 
    7208                 :            :         /* Clean up */
    7209                 :          3 :         free_bdev(bdev);
    7210                 :          3 : }
    7211                 :            : 
    7212                 :            : static int ut_examine_claimed_init0(void);
    7213                 :            : static int ut_examine_claimed_init1(void);
    7214                 :            : static void ut_examine_claimed_config0(struct spdk_bdev *bdev);
    7215                 :            : static void ut_examine_claimed_disk0(struct spdk_bdev *bdev);
    7216                 :            : static void ut_examine_claimed_config1(struct spdk_bdev *bdev);
    7217                 :            : static void ut_examine_claimed_disk1(struct spdk_bdev *bdev);
    7218                 :            : 
    7219                 :            : #define UT_MAX_EXAMINE_MODS 2
    7220                 :            : struct spdk_bdev_module examine_claimed_mods[UT_MAX_EXAMINE_MODS] = {
    7221                 :            :         {
    7222                 :            :                 .name = "vbdev_ut_examine0",
    7223                 :            :                 .module_init = ut_examine_claimed_init0,
    7224                 :            :                 .module_fini = vbdev_ut_module_fini,
    7225                 :            :                 .examine_config = ut_examine_claimed_config0,
    7226                 :            :                 .examine_disk = ut_examine_claimed_disk0,
    7227                 :            :         },
    7228                 :            :         {
    7229                 :            :                 .name = "vbdev_ut_examine1",
    7230                 :            :                 .module_init = ut_examine_claimed_init1,
    7231                 :            :                 .module_fini = vbdev_ut_module_fini,
    7232                 :            :                 .examine_config = ut_examine_claimed_config1,
    7233                 :            :                 .examine_disk = ut_examine_claimed_disk1,
    7234                 :            :         }
    7235                 :            : };
    7236                 :            : 
    7237                 :          3 : SPDK_BDEV_MODULE_REGISTER(bdev_ut_claimed0, &examine_claimed_mods[0])
    7238                 :          3 : SPDK_BDEV_MODULE_REGISTER(bdev_ut_claimed1, &examine_claimed_mods[1])
    7239                 :            : 
    7240                 :            : struct ut_examine_claimed_ctx {
    7241                 :            :         uint32_t examine_config_count;
    7242                 :            :         uint32_t examine_disk_count;
    7243                 :            : 
    7244                 :            :         /* Claim type to take, with these options */
    7245                 :            :         enum spdk_bdev_claim_type claim_type;
    7246                 :            :         struct spdk_bdev_claim_opts claim_opts;
    7247                 :            : 
    7248                 :            :         /* Expected return value from spdk_bdev_module_claim_bdev_desc() */
    7249                 :            :         int expect_claim_err;
    7250                 :            : 
    7251                 :            :         /* Descriptor used for a claim */
    7252                 :            :         struct spdk_bdev_desc *desc;
    7253                 :            : } examine_claimed_ctx[UT_MAX_EXAMINE_MODS];
    7254                 :            : 
    7255                 :            : bool ut_testing_examine_claimed;
    7256                 :            : 
    7257                 :            : /*
    7258                 :            :  * Store the order in which the modules were initialized,
    7259                 :            :  * since we have no guarantee on the order of execution of the constructors.
    7260                 :            :  * Modules are examined in reverse order of their initialization.
    7261                 :            :  */
    7262                 :            : static int g_ut_examine_claimed_order[UT_MAX_EXAMINE_MODS];
    7263                 :            : static int
    7264                 :        240 : ut_examine_claimed_init(uint32_t modnum)
    7265                 :            : {
    7266                 :            :         static int current = UT_MAX_EXAMINE_MODS;
    7267                 :            : 
    7268                 :            :         /* Only do this for thre first initialization of the bdev framework */
    7269         [ +  + ]:        240 :         if (current == 0) {
    7270                 :        234 :                 return 0;
    7271                 :            :         }
    7272                 :          6 :         g_ut_examine_claimed_order[modnum] = --current;
    7273                 :            : 
    7274                 :          6 :         return 0;
    7275                 :            : }
    7276                 :            : 
    7277                 :            : static int
    7278                 :        120 : ut_examine_claimed_init0(void)
    7279                 :            : {
    7280                 :        120 :         return ut_examine_claimed_init(0);
    7281                 :            : }
    7282                 :            : 
    7283                 :            : static int
    7284                 :        120 : ut_examine_claimed_init1(void)
    7285                 :            : {
    7286                 :        120 :         return ut_examine_claimed_init(1);
    7287                 :            : }
    7288                 :            : 
    7289                 :            : static void
    7290                 :         12 : reset_examine_claimed_ctx(void)
    7291                 :            : {
    7292                 :            :         struct ut_examine_claimed_ctx *ctx;
    7293                 :            :         uint32_t i;
    7294                 :            : 
    7295         [ +  + ]:         36 :         for (i = 0; i < SPDK_COUNTOF(examine_claimed_ctx); i++) {
    7296                 :         24 :                 ctx = &examine_claimed_ctx[i];
    7297         [ +  + ]:         24 :                 if (ctx->desc != NULL) {
    7298                 :         15 :                         spdk_bdev_close(ctx->desc);
    7299                 :            :                 }
    7300         [ -  + ]:         24 :                 memset(ctx, 0, sizeof(*ctx));
    7301                 :         24 :                 spdk_bdev_claim_opts_init(&ctx->claim_opts, sizeof(ctx->claim_opts));
    7302                 :            :         }
    7303                 :         12 : }
    7304                 :            : 
    7305                 :            : static void
    7306                 :        480 : examine_claimed_config(struct spdk_bdev *bdev, uint32_t modnum)
    7307                 :            : {
    7308         [ -  + ]:        480 :         SPDK_CU_ASSERT_FATAL(modnum < UT_MAX_EXAMINE_MODS);
    7309                 :        480 :         struct spdk_bdev_module *module = &examine_claimed_mods[modnum];
    7310                 :        480 :         struct ut_examine_claimed_ctx *ctx = &examine_claimed_ctx[modnum];
    7311                 :            :         int rc;
    7312                 :            : 
    7313   [ +  +  +  + ]:        480 :         if (!ut_testing_examine_claimed) {
    7314                 :        462 :                 spdk_bdev_module_examine_done(module);
    7315                 :        462 :                 return;
    7316                 :            :         }
    7317                 :            : 
    7318                 :         18 :         ctx->examine_config_count++;
    7319                 :            : 
    7320         [ +  + ]:         18 :         if (ctx->claim_type != SPDK_BDEV_CLAIM_NONE) {
    7321                 :         15 :                 rc = spdk_bdev_open_ext(bdev->name, false, bdev_ut_event_cb, &ctx->claim_opts,
    7322                 :            :                                         &ctx->desc);
    7323                 :         15 :                 CU_ASSERT(rc == 0);
    7324                 :            : 
    7325                 :         15 :                 rc = spdk_bdev_module_claim_bdev_desc(ctx->desc, ctx->claim_type, NULL, module);
    7326                 :         15 :                 CU_ASSERT(rc == ctx->expect_claim_err);
    7327                 :            :         }
    7328                 :         18 :         spdk_bdev_module_examine_done(module);
    7329                 :            : }
    7330                 :            : 
    7331                 :            : static void
    7332                 :        240 : ut_examine_claimed_config0(struct spdk_bdev *bdev)
    7333                 :            : {
    7334                 :        240 :         examine_claimed_config(bdev, g_ut_examine_claimed_order[0]);
    7335                 :        240 : }
    7336                 :            : 
    7337                 :            : static void
    7338                 :        240 : ut_examine_claimed_config1(struct spdk_bdev *bdev)
    7339                 :            : {
    7340                 :        240 :         examine_claimed_config(bdev, g_ut_examine_claimed_order[1]);
    7341                 :        240 : }
    7342                 :            : 
    7343                 :            : static void
    7344                 :        462 : examine_claimed_disk(struct spdk_bdev *bdev, uint32_t modnum)
    7345                 :            : {
    7346         [ -  + ]:        462 :         SPDK_CU_ASSERT_FATAL(modnum < UT_MAX_EXAMINE_MODS);
    7347                 :        462 :         struct spdk_bdev_module *module = &examine_claimed_mods[modnum];
    7348                 :        462 :         struct ut_examine_claimed_ctx *ctx = &examine_claimed_ctx[modnum];
    7349                 :            : 
    7350   [ +  +  +  + ]:        462 :         if (!ut_testing_examine_claimed) {
    7351                 :        450 :                 spdk_bdev_module_examine_done(module);
    7352                 :        450 :                 return;
    7353                 :            :         }
    7354                 :            : 
    7355                 :         12 :         ctx->examine_disk_count++;
    7356                 :            : 
    7357                 :         12 :         spdk_bdev_module_examine_done(module);
    7358                 :            : }
    7359                 :            : 
    7360                 :            : static void
    7361                 :        231 : ut_examine_claimed_disk0(struct spdk_bdev *bdev)
    7362                 :            : {
    7363                 :        231 :         examine_claimed_disk(bdev, 0);
    7364                 :        231 : }
    7365                 :            : 
    7366                 :            : static void
    7367                 :        231 : ut_examine_claimed_disk1(struct spdk_bdev *bdev)
    7368                 :            : {
    7369                 :        231 :         examine_claimed_disk(bdev, 1);
    7370                 :        231 : }
    7371                 :            : 
    7372                 :            : static void
    7373                 :          3 : examine_claimed(void)
    7374                 :            : {
    7375                 :            :         struct spdk_bdev *bdev;
    7376                 :          3 :         struct spdk_bdev_module *mod = examine_claimed_mods;
    7377                 :          3 :         struct ut_examine_claimed_ctx *ctx = examine_claimed_ctx;
    7378                 :            : 
    7379                 :          3 :         ut_testing_examine_claimed = true;
    7380                 :          3 :         reset_examine_claimed_ctx();
    7381                 :            : 
    7382                 :            :         /*
    7383                 :            :          * With one module claiming, both modules' examine_config should be called, but only the
    7384                 :            :          * claiming module's examine_disk should be called.
    7385                 :            :          */
    7386                 :          3 :         ctx[0].claim_type = SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE;
    7387                 :          3 :         bdev = allocate_bdev("bdev0");
    7388                 :          3 :         CU_ASSERT(ctx[0].examine_config_count == 1);
    7389                 :          3 :         CU_ASSERT(ctx[0].examine_disk_count == 1);
    7390         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(ctx[0].desc != NULL);
    7391                 :          3 :         CU_ASSERT(ctx[0].desc->claim->module == &mod[0]);
    7392                 :          3 :         CU_ASSERT(ctx[1].examine_config_count == 1);
    7393                 :          3 :         CU_ASSERT(ctx[1].examine_disk_count == 0);
    7394                 :          3 :         CU_ASSERT(ctx[1].desc == NULL);
    7395                 :          3 :         reset_examine_claimed_ctx();
    7396                 :          3 :         free_bdev(bdev);
    7397                 :            : 
    7398                 :            :         /*
    7399                 :            :          * With two modules claiming, both modules' examine_config and examine_disk should be
    7400                 :            :          * called.
    7401                 :            :          */
    7402                 :          3 :         ctx[0].claim_type = SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE;
    7403                 :          3 :         ctx[1].claim_type = SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE;
    7404                 :          3 :         bdev = allocate_bdev("bdev0");
    7405                 :          3 :         CU_ASSERT(ctx[0].examine_config_count == 1);
    7406                 :          3 :         CU_ASSERT(ctx[0].examine_disk_count == 1);
    7407         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(ctx[0].desc != NULL);
    7408                 :          3 :         CU_ASSERT(ctx[0].desc->claim->module == &mod[0]);
    7409                 :          3 :         CU_ASSERT(ctx[1].examine_config_count == 1);
    7410                 :          3 :         CU_ASSERT(ctx[1].examine_disk_count == 1);
    7411         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(ctx[1].desc != NULL);
    7412                 :          3 :         CU_ASSERT(ctx[1].desc->claim->module == &mod[1]);
    7413                 :          3 :         reset_examine_claimed_ctx();
    7414                 :          3 :         free_bdev(bdev);
    7415                 :            : 
    7416                 :            :         /*
    7417                 :            :          * If two vbdev modules try to claim with conflicting claim types, the module that was added
    7418                 :            :          * last wins. The winner gets the claim and is the only one that has its examine_disk
    7419                 :            :          * callback invoked.
    7420                 :            :          */
    7421                 :          3 :         ctx[0].claim_type = SPDK_BDEV_CLAIM_READ_MANY_WRITE_NONE;
    7422                 :          3 :         ctx[0].expect_claim_err = -EPERM;
    7423                 :          3 :         ctx[1].claim_type = SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE;
    7424                 :          3 :         bdev = allocate_bdev("bdev0");
    7425                 :          3 :         CU_ASSERT(ctx[0].examine_config_count == 1);
    7426                 :          3 :         CU_ASSERT(ctx[0].examine_disk_count == 0);
    7427                 :          3 :         CU_ASSERT(ctx[1].examine_config_count == 1);
    7428                 :          3 :         CU_ASSERT(ctx[1].examine_disk_count == 1);
    7429         [ -  + ]:          3 :         SPDK_CU_ASSERT_FATAL(ctx[1].desc != NULL);
    7430                 :          3 :         CU_ASSERT(ctx[1].desc->claim->module == &mod[1]);
    7431                 :          3 :         CU_ASSERT(bdev->internal.claim_type == SPDK_BDEV_CLAIM_READ_MANY_WRITE_ONE);
    7432                 :          3 :         reset_examine_claimed_ctx();
    7433                 :          3 :         free_bdev(bdev);
    7434                 :            : 
    7435                 :          3 :         ut_testing_examine_claimed = false;
    7436                 :          3 : }
    7437                 :            : 
    7438                 :            : int
    7439                 :          3 : main(int argc, char **argv)
    7440                 :            : {
    7441                 :          3 :         CU_pSuite               suite = NULL;
    7442                 :            :         unsigned int            num_failures;
    7443                 :            : 
    7444                 :          3 :         CU_initialize_registry();
    7445                 :            : 
    7446                 :          3 :         suite = CU_add_suite("bdev", ut_bdev_setup, ut_bdev_teardown);
    7447                 :            : 
    7448                 :          3 :         CU_ADD_TEST(suite, bytes_to_blocks_test);
    7449                 :          3 :         CU_ADD_TEST(suite, num_blocks_test);
    7450                 :          3 :         CU_ADD_TEST(suite, io_valid_test);
    7451                 :          3 :         CU_ADD_TEST(suite, open_write_test);
    7452                 :          3 :         CU_ADD_TEST(suite, claim_test);
    7453                 :          3 :         CU_ADD_TEST(suite, alias_add_del_test);
    7454                 :          3 :         CU_ADD_TEST(suite, get_device_stat_test);
    7455                 :          3 :         CU_ADD_TEST(suite, bdev_io_types_test);
    7456                 :          3 :         CU_ADD_TEST(suite, bdev_io_wait_test);
    7457                 :          3 :         CU_ADD_TEST(suite, bdev_io_spans_split_test);
    7458                 :          3 :         CU_ADD_TEST(suite, bdev_io_boundary_split_test);
    7459                 :          3 :         CU_ADD_TEST(suite, bdev_io_max_size_and_segment_split_test);
    7460                 :          3 :         CU_ADD_TEST(suite, bdev_io_mix_split_test);
    7461                 :          3 :         CU_ADD_TEST(suite, bdev_io_split_with_io_wait);
    7462                 :          3 :         CU_ADD_TEST(suite, bdev_io_write_unit_split_test);
    7463                 :          3 :         CU_ADD_TEST(suite, bdev_io_alignment_with_boundary);
    7464                 :          3 :         CU_ADD_TEST(suite, bdev_io_alignment);
    7465                 :          3 :         CU_ADD_TEST(suite, bdev_histograms);
    7466                 :          3 :         CU_ADD_TEST(suite, bdev_write_zeroes);
    7467                 :          3 :         CU_ADD_TEST(suite, bdev_compare_and_write);
    7468                 :          3 :         CU_ADD_TEST(suite, bdev_compare);
    7469                 :          3 :         CU_ADD_TEST(suite, bdev_compare_emulated);
    7470                 :          3 :         CU_ADD_TEST(suite, bdev_zcopy_write);
    7471                 :          3 :         CU_ADD_TEST(suite, bdev_zcopy_read);
    7472                 :          3 :         CU_ADD_TEST(suite, bdev_open_while_hotremove);
    7473                 :          3 :         CU_ADD_TEST(suite, bdev_close_while_hotremove);
    7474                 :          3 :         CU_ADD_TEST(suite, bdev_open_ext_test);
    7475                 :          3 :         CU_ADD_TEST(suite, bdev_open_ext_unregister);
    7476                 :          3 :         CU_ADD_TEST(suite, bdev_set_io_timeout);
    7477                 :          3 :         CU_ADD_TEST(suite, bdev_set_qd_sampling);
    7478                 :          3 :         CU_ADD_TEST(suite, lba_range_overlap);
    7479                 :          3 :         CU_ADD_TEST(suite, lock_lba_range_check_ranges);
    7480                 :          3 :         CU_ADD_TEST(suite, lock_lba_range_with_io_outstanding);
    7481                 :          3 :         CU_ADD_TEST(suite, lock_lba_range_overlapped);
    7482                 :          3 :         CU_ADD_TEST(suite, bdev_quiesce);
    7483                 :          3 :         CU_ADD_TEST(suite, bdev_io_abort);
    7484                 :          3 :         CU_ADD_TEST(suite, bdev_unmap);
    7485                 :          3 :         CU_ADD_TEST(suite, bdev_write_zeroes_split_test);
    7486                 :          3 :         CU_ADD_TEST(suite, bdev_set_options_test);
    7487                 :          3 :         CU_ADD_TEST(suite, bdev_get_memory_domains);
    7488                 :          3 :         CU_ADD_TEST(suite, bdev_io_ext);
    7489                 :          3 :         CU_ADD_TEST(suite, bdev_io_ext_no_opts);
    7490                 :          3 :         CU_ADD_TEST(suite, bdev_io_ext_invalid_opts);
    7491                 :          3 :         CU_ADD_TEST(suite, bdev_io_ext_split);
    7492                 :          3 :         CU_ADD_TEST(suite, bdev_io_ext_bounce_buffer);
    7493                 :          3 :         CU_ADD_TEST(suite, bdev_register_uuid_alias);
    7494                 :          3 :         CU_ADD_TEST(suite, bdev_unregister_by_name);
    7495                 :          3 :         CU_ADD_TEST(suite, for_each_bdev_test);
    7496                 :          3 :         CU_ADD_TEST(suite, bdev_seek_test);
    7497                 :          3 :         CU_ADD_TEST(suite, bdev_copy);
    7498                 :          3 :         CU_ADD_TEST(suite, bdev_copy_split_test);
    7499                 :          3 :         CU_ADD_TEST(suite, examine_locks);
    7500                 :          3 :         CU_ADD_TEST(suite, claim_v2_rwo);
    7501                 :          3 :         CU_ADD_TEST(suite, claim_v2_rom);
    7502                 :          3 :         CU_ADD_TEST(suite, claim_v2_rwm);
    7503                 :          3 :         CU_ADD_TEST(suite, claim_v2_existing_writer);
    7504                 :          3 :         CU_ADD_TEST(suite, claim_v2_existing_v1);
    7505                 :          3 :         CU_ADD_TEST(suite, claim_v1_existing_v2);
    7506                 :          3 :         CU_ADD_TEST(suite, examine_claimed);
    7507                 :            : 
    7508                 :          3 :         allocate_cores(1);
    7509                 :          3 :         allocate_threads(1);
    7510                 :          3 :         set_thread(0);
    7511                 :            : 
    7512                 :          3 :         num_failures = spdk_ut_run_tests(argc, argv, NULL);
    7513                 :          3 :         CU_cleanup_registry();
    7514                 :            : 
    7515                 :          3 :         free_threads();
    7516                 :          3 :         free_cores();
    7517                 :            : 
    7518                 :          3 :         return num_failures;
    7519                 :            : }

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