LCOV - code coverage report
Current view: top level - lib/accel - accel.c (source / functions) Hit Total Coverage
Test: ut_cov_unit.info Lines: 979 1675 58.4 %
Date: 2024-07-12 10:59:32 Functions: 71 115 61.7 %

          Line data    Source code
       1             : /*   SPDX-License-Identifier: BSD-3-Clause
       2             :  *   Copyright (C) 2020 Intel Corporation.
       3             :  *   Copyright (c) 2022, 2023 NVIDIA CORPORATION & AFFILIATES.
       4             :  *   All rights reserved.
       5             :  */
       6             : 
       7             : #include "spdk/stdinc.h"
       8             : 
       9             : #include "spdk/accel_module.h"
      10             : 
      11             : #include "accel_internal.h"
      12             : 
      13             : #include "spdk/dma.h"
      14             : #include "spdk/env.h"
      15             : #include "spdk/likely.h"
      16             : #include "spdk/log.h"
      17             : #include "spdk/thread.h"
      18             : #include "spdk/json.h"
      19             : #include "spdk/crc32.h"
      20             : #include "spdk/util.h"
      21             : #include "spdk/hexlify.h"
      22             : #include "spdk/string.h"
      23             : 
      24             : /* Accelerator Framework: The following provides a top level
      25             :  * generic API for the accelerator functions defined here. Modules,
      26             :  * such as the one in /module/accel/ioat, supply the implementation
      27             :  * with the exception of the pure software implementation contained
      28             :  * later in this file.
      29             :  */
      30             : 
      31             : #define ALIGN_4K                        0x1000
      32             : #define MAX_TASKS_PER_CHANNEL           0x800
      33             : #define ACCEL_SMALL_CACHE_SIZE          128
      34             : #define ACCEL_LARGE_CACHE_SIZE          16
      35             : /* Set MSB, so we don't return NULL pointers as buffers */
      36             : #define ACCEL_BUFFER_BASE               ((void *)(1ull << 63))
      37             : #define ACCEL_BUFFER_OFFSET_MASK        ((uintptr_t)ACCEL_BUFFER_BASE - 1)
      38             : 
      39             : #define ACCEL_CRYPTO_TWEAK_MODE_DEFAULT SPDK_ACCEL_CRYPTO_TWEAK_MODE_SIMPLE_LBA
      40             : 
      41             : struct accel_module {
      42             :         struct spdk_accel_module_if     *module;
      43             :         bool                            supports_memory_domains;
      44             : };
      45             : 
      46             : /* Largest context size for all accel modules */
      47             : static size_t g_max_accel_module_size = sizeof(struct spdk_accel_task);
      48             : 
      49             : static struct spdk_accel_module_if *g_accel_module = NULL;
      50             : static spdk_accel_fini_cb g_fini_cb_fn = NULL;
      51             : static void *g_fini_cb_arg = NULL;
      52             : static bool g_modules_started = false;
      53             : static struct spdk_memory_domain *g_accel_domain;
      54             : 
      55             : /* Global list of registered accelerator modules */
      56             : static TAILQ_HEAD(, spdk_accel_module_if) spdk_accel_module_list =
      57             :         TAILQ_HEAD_INITIALIZER(spdk_accel_module_list);
      58             : 
      59             : /* Crypto keyring */
      60             : static TAILQ_HEAD(, spdk_accel_crypto_key) g_keyring = TAILQ_HEAD_INITIALIZER(g_keyring);
      61             : static struct spdk_spinlock g_keyring_spin;
      62             : 
      63             : /* Global array mapping capabilities to modules */
      64             : static struct accel_module g_modules_opc[SPDK_ACCEL_OPC_LAST] = {};
      65             : static char *g_modules_opc_override[SPDK_ACCEL_OPC_LAST] = {};
      66             : TAILQ_HEAD(, spdk_accel_driver) g_accel_drivers = TAILQ_HEAD_INITIALIZER(g_accel_drivers);
      67             : static struct spdk_accel_driver *g_accel_driver;
      68             : static struct spdk_accel_opts g_opts = {
      69             :         .small_cache_size = ACCEL_SMALL_CACHE_SIZE,
      70             :         .large_cache_size = ACCEL_LARGE_CACHE_SIZE,
      71             :         .task_count = MAX_TASKS_PER_CHANNEL,
      72             :         .sequence_count = MAX_TASKS_PER_CHANNEL,
      73             :         .buf_count = MAX_TASKS_PER_CHANNEL,
      74             : };
      75             : static struct accel_stats g_stats;
      76             : static struct spdk_spinlock g_stats_lock;
      77             : 
      78             : static const char *g_opcode_strings[SPDK_ACCEL_OPC_LAST] = {
      79             :         "copy", "fill", "dualcast", "compare", "crc32c", "copy_crc32c",
      80             :         "compress", "decompress", "encrypt", "decrypt", "xor",
      81             :         "dif_verify", "dif_verify_copy", "dif_generate", "dif_generate_copy"
      82             : };
      83             : 
      84             : enum accel_sequence_state {
      85             :         ACCEL_SEQUENCE_STATE_INIT,
      86             :         ACCEL_SEQUENCE_STATE_CHECK_VIRTBUF,
      87             :         ACCEL_SEQUENCE_STATE_AWAIT_VIRTBUF,
      88             :         ACCEL_SEQUENCE_STATE_CHECK_BOUNCEBUF,
      89             :         ACCEL_SEQUENCE_STATE_AWAIT_BOUNCEBUF,
      90             :         ACCEL_SEQUENCE_STATE_PULL_DATA,
      91             :         ACCEL_SEQUENCE_STATE_AWAIT_PULL_DATA,
      92             :         ACCEL_SEQUENCE_STATE_EXEC_TASK,
      93             :         ACCEL_SEQUENCE_STATE_AWAIT_TASK,
      94             :         ACCEL_SEQUENCE_STATE_COMPLETE_TASK,
      95             :         ACCEL_SEQUENCE_STATE_NEXT_TASK,
      96             :         ACCEL_SEQUENCE_STATE_PUSH_DATA,
      97             :         ACCEL_SEQUENCE_STATE_AWAIT_PUSH_DATA,
      98             :         ACCEL_SEQUENCE_STATE_DRIVER_EXEC_TASKS,
      99             :         ACCEL_SEQUENCE_STATE_DRIVER_AWAIT_TASKS,
     100             :         ACCEL_SEQUENCE_STATE_DRIVER_COMPLETE_TASKS,
     101             :         ACCEL_SEQUENCE_STATE_ERROR,
     102             :         ACCEL_SEQUENCE_STATE_MAX,
     103             : };
     104             : 
     105             : static const char *g_seq_states[]
     106             : __attribute__((unused)) = {
     107             :         [ACCEL_SEQUENCE_STATE_INIT] = "init",
     108             :         [ACCEL_SEQUENCE_STATE_CHECK_VIRTBUF] = "check-virtbuf",
     109             :         [ACCEL_SEQUENCE_STATE_AWAIT_VIRTBUF] = "await-virtbuf",
     110             :         [ACCEL_SEQUENCE_STATE_CHECK_BOUNCEBUF] = "check-bouncebuf",
     111             :         [ACCEL_SEQUENCE_STATE_AWAIT_BOUNCEBUF] = "await-bouncebuf",
     112             :         [ACCEL_SEQUENCE_STATE_PULL_DATA] = "pull-data",
     113             :         [ACCEL_SEQUENCE_STATE_AWAIT_PULL_DATA] = "await-pull-data",
     114             :         [ACCEL_SEQUENCE_STATE_EXEC_TASK] = "exec-task",
     115             :         [ACCEL_SEQUENCE_STATE_AWAIT_TASK] = "await-task",
     116             :         [ACCEL_SEQUENCE_STATE_COMPLETE_TASK] = "complete-task",
     117             :         [ACCEL_SEQUENCE_STATE_NEXT_TASK] = "next-task",
     118             :         [ACCEL_SEQUENCE_STATE_PUSH_DATA] = "push-data",
     119             :         [ACCEL_SEQUENCE_STATE_AWAIT_PUSH_DATA] = "await-push-data",
     120             :         [ACCEL_SEQUENCE_STATE_DRIVER_EXEC_TASKS] = "driver-exec-tasks",
     121             :         [ACCEL_SEQUENCE_STATE_DRIVER_AWAIT_TASKS] = "driver-await-tasks",
     122             :         [ACCEL_SEQUENCE_STATE_DRIVER_COMPLETE_TASKS] = "driver-complete-tasks",
     123             :         [ACCEL_SEQUENCE_STATE_ERROR] = "error",
     124             :         [ACCEL_SEQUENCE_STATE_MAX] = "",
     125             : };
     126             : 
     127             : #define ACCEL_SEQUENCE_STATE_STRING(s) \
     128             :         (((s) >= ACCEL_SEQUENCE_STATE_INIT && (s) < ACCEL_SEQUENCE_STATE_MAX) \
     129             :          ? g_seq_states[s] : "unknown")
     130             : 
     131             : struct accel_buffer {
     132             :         struct spdk_accel_sequence      *seq;
     133             :         void                            *buf;
     134             :         uint64_t                        len;
     135             :         struct spdk_iobuf_entry         iobuf;
     136             :         spdk_accel_sequence_get_buf_cb  cb_fn;
     137             :         void                            *cb_ctx;
     138             :         SLIST_ENTRY(accel_buffer)       link;
     139             :         struct accel_io_channel         *ch;
     140             : };
     141             : 
     142             : struct accel_io_channel {
     143             :         struct spdk_io_channel                  *module_ch[SPDK_ACCEL_OPC_LAST];
     144             :         struct spdk_io_channel                  *driver_channel;
     145             :         void                                    *task_pool_base;
     146             :         struct spdk_accel_sequence              *seq_pool_base;
     147             :         struct accel_buffer                     *buf_pool_base;
     148             :         struct spdk_accel_task_aux_data         *task_aux_data_base;
     149             :         STAILQ_HEAD(, spdk_accel_task)          task_pool;
     150             :         SLIST_HEAD(, spdk_accel_task_aux_data)  task_aux_data_pool;
     151             :         SLIST_HEAD(, spdk_accel_sequence)       seq_pool;
     152             :         SLIST_HEAD(, accel_buffer)              buf_pool;
     153             :         struct spdk_iobuf_channel               iobuf;
     154             :         struct accel_stats                      stats;
     155             : };
     156             : 
     157             : TAILQ_HEAD(accel_sequence_tasks, spdk_accel_task);
     158             : 
     159             : struct spdk_accel_sequence {
     160             :         struct accel_io_channel                 *ch;
     161             :         struct accel_sequence_tasks             tasks;
     162             :         SLIST_HEAD(, accel_buffer)              bounce_bufs;
     163             :         int                                     status;
     164             :         /* state uses enum accel_sequence_state */
     165             :         uint8_t                                 state;
     166             :         bool                                    in_process_sequence;
     167             :         spdk_accel_completion_cb                cb_fn;
     168             :         void                                    *cb_arg;
     169             :         SLIST_ENTRY(spdk_accel_sequence)        link;
     170             : };
     171             : SPDK_STATIC_ASSERT(sizeof(struct spdk_accel_sequence) == 64, "invalid size");
     172             : 
     173             : #define accel_update_stats(ch, event, v) \
     174             :         do { \
     175             :                 (ch)->stats.event += (v); \
     176             :         } while (0)
     177             : 
     178             : #define accel_update_task_stats(ch, task, event, v) \
     179             :         accel_update_stats(ch, operations[(task)->op_code].event, v)
     180             : 
     181             : static inline void accel_sequence_task_cb(void *cb_arg, int status);
     182             : 
     183             : static inline void
     184         709 : accel_sequence_set_state(struct spdk_accel_sequence *seq, enum accel_sequence_state state)
     185             : {
     186         709 :         SPDK_DEBUGLOG(accel, "seq=%p, setting state: %s -> %s\n", seq,
     187             :                       ACCEL_SEQUENCE_STATE_STRING(seq->state), ACCEL_SEQUENCE_STATE_STRING(state));
     188         709 :         assert(seq->state != ACCEL_SEQUENCE_STATE_ERROR || state == ACCEL_SEQUENCE_STATE_ERROR);
     189         709 :         seq->state = state;
     190         709 : }
     191             : 
     192             : static void
     193           9 : accel_sequence_set_fail(struct spdk_accel_sequence *seq, int status)
     194             : {
     195           9 :         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_ERROR);
     196           9 :         assert(status != 0);
     197           9 :         seq->status = status;
     198           9 : }
     199             : 
     200             : int
     201          15 : spdk_accel_get_opc_module_name(enum spdk_accel_opcode opcode, const char **module_name)
     202             : {
     203          15 :         if (opcode >= SPDK_ACCEL_OPC_LAST) {
     204             :                 /* invalid opcode */
     205           0 :                 return -EINVAL;
     206             :         }
     207             : 
     208          15 :         if (g_modules_opc[opcode].module) {
     209          15 :                 *module_name = g_modules_opc[opcode].module->name;
     210             :         } else {
     211           0 :                 return -ENOENT;
     212             :         }
     213             : 
     214          15 :         return 0;
     215             : }
     216             : 
     217             : void
     218           0 : _accel_for_each_module(struct module_info *info, _accel_for_each_module_fn fn)
     219             : {
     220             :         struct spdk_accel_module_if *accel_module;
     221             :         enum spdk_accel_opcode opcode;
     222           0 :         int j = 0;
     223             : 
     224           0 :         TAILQ_FOREACH(accel_module, &spdk_accel_module_list, tailq) {
     225           0 :                 for (opcode = 0; opcode < SPDK_ACCEL_OPC_LAST; opcode++) {
     226           0 :                         if (accel_module->supports_opcode(opcode)) {
     227           0 :                                 info->ops[j] = opcode;
     228           0 :                                 j++;
     229             :                         }
     230             :                 }
     231           0 :                 info->name = accel_module->name;
     232           0 :                 info->num_ops = j;
     233           0 :                 fn(info);
     234           0 :                 j = 0;
     235             :         }
     236           0 : }
     237             : 
     238             : const char *
     239           0 : spdk_accel_get_opcode_name(enum spdk_accel_opcode opcode)
     240             : {
     241           0 :         if (opcode < SPDK_ACCEL_OPC_LAST) {
     242           0 :                 return g_opcode_strings[opcode];
     243             :         }
     244             : 
     245           0 :         return NULL;
     246             : }
     247             : 
     248             : int
     249           0 : spdk_accel_assign_opc(enum spdk_accel_opcode opcode, const char *name)
     250             : {
     251             :         char *copy;
     252             : 
     253           0 :         if (g_modules_started == true) {
     254             :                 /* we don't allow re-assignment once things have started */
     255           0 :                 return -EINVAL;
     256             :         }
     257             : 
     258           0 :         if (opcode >= SPDK_ACCEL_OPC_LAST) {
     259             :                 /* invalid opcode */
     260           0 :                 return -EINVAL;
     261             :         }
     262             : 
     263           0 :         copy = strdup(name);
     264           0 :         if (copy == NULL) {
     265           0 :                 return -ENOMEM;
     266             :         }
     267             : 
     268             :         /* module selection will be validated after the framework starts. */
     269           0 :         free(g_modules_opc_override[opcode]);
     270           0 :         g_modules_opc_override[opcode] = copy;
     271             : 
     272           0 :         return 0;
     273             : }
     274             : 
     275             : inline static struct spdk_accel_task *
     276         151 : _get_task(struct accel_io_channel *accel_ch, spdk_accel_completion_cb cb_fn, void *cb_arg)
     277             : {
     278             :         struct spdk_accel_task *accel_task;
     279             : 
     280         151 :         accel_task = STAILQ_FIRST(&accel_ch->task_pool);
     281         151 :         if (spdk_unlikely(accel_task == NULL)) {
     282          11 :                 accel_update_stats(accel_ch, retry.task, 1);
     283          11 :                 return NULL;
     284             :         }
     285             : 
     286         140 :         STAILQ_REMOVE_HEAD(&accel_ch->task_pool, link);
     287         140 :         accel_task->link.stqe_next = NULL;
     288             : 
     289         140 :         accel_task->cb_fn = cb_fn;
     290         140 :         accel_task->cb_arg = cb_arg;
     291         140 :         accel_task->accel_ch = accel_ch;
     292         140 :         accel_task->s.iovs = NULL;
     293         140 :         accel_task->d.iovs = NULL;
     294             : 
     295         140 :         return accel_task;
     296             : }
     297             : 
     298             : static void
     299         132 : _put_task(struct accel_io_channel *ch, struct spdk_accel_task *task)
     300             : {
     301         132 :         STAILQ_INSERT_HEAD(&ch->task_pool, task, link);
     302         132 : }
     303             : 
     304             : void
     305          95 : spdk_accel_task_complete(struct spdk_accel_task *accel_task, int status)
     306             : {
     307          95 :         struct accel_io_channel         *accel_ch = accel_task->accel_ch;
     308             :         spdk_accel_completion_cb        cb_fn;
     309             :         void                            *cb_arg;
     310             : 
     311          95 :         accel_update_task_stats(accel_ch, accel_task, executed, 1);
     312          95 :         accel_update_task_stats(accel_ch, accel_task, num_bytes, accel_task->nbytes);
     313          95 :         if (spdk_unlikely(status != 0)) {
     314           3 :                 accel_update_task_stats(accel_ch, accel_task, failed, 1);
     315             :         }
     316             : 
     317          95 :         if (accel_task->seq) {
     318          94 :                 accel_sequence_task_cb(accel_task->seq, status);
     319          94 :                 return;
     320             :         }
     321             : 
     322           1 :         cb_fn = accel_task->cb_fn;
     323           1 :         cb_arg = accel_task->cb_arg;
     324             : 
     325           1 :         if (accel_task->has_aux) {
     326           0 :                 SLIST_INSERT_HEAD(&accel_ch->task_aux_data_pool, accel_task->aux, link);
     327           0 :                 accel_task->aux = NULL;
     328           0 :                 accel_task->has_aux = false;
     329             :         }
     330             : 
     331             :         /* We should put the accel_task into the list firstly in order to avoid
     332             :          * the accel task list is exhausted when there is recursive call to
     333             :          * allocate accel_task in user's call back function (cb_fn)
     334             :          */
     335           1 :         _put_task(accel_ch, accel_task);
     336             : 
     337           1 :         cb_fn(cb_arg, status);
     338             : }
     339             : 
     340             : static inline int
     341          92 : accel_submit_task(struct accel_io_channel *accel_ch, struct spdk_accel_task *task)
     342             : {
     343          92 :         struct spdk_io_channel *module_ch = accel_ch->module_ch[task->op_code];
     344          92 :         struct spdk_accel_module_if *module = g_modules_opc[task->op_code].module;
     345             :         int rc;
     346             : 
     347          92 :         rc = module->submit_tasks(module_ch, task);
     348          92 :         if (spdk_unlikely(rc != 0)) {
     349           2 :                 accel_update_task_stats(accel_ch, task, failed, 1);
     350             :         }
     351             : 
     352          92 :         return rc;
     353             : }
     354             : 
     355             : static inline uint64_t
     356         114 : accel_get_iovlen(struct iovec *iovs, uint32_t iovcnt)
     357             : {
     358         114 :         uint64_t result = 0;
     359             :         uint32_t i;
     360             : 
     361         259 :         for (i = 0; i < iovcnt; ++i) {
     362         145 :                 result += iovs[i].iov_len;
     363             :         }
     364             : 
     365         114 :         return result;
     366             : }
     367             : 
     368             : #define ACCEL_TASK_ALLOC_AUX_BUF(task)                                          \
     369             : do {                                                                            \
     370             :         (task)->aux = SLIST_FIRST(&(task)->accel_ch->task_aux_data_pool);  \
     371             :         if (spdk_unlikely(!(task)->aux)) {                                   \
     372             :                 SPDK_ERRLOG("Fatal problem, aux data was not allocated\n");   \
     373             :                 _put_task(task->accel_ch, task);                             \
     374             :                 assert(0);                                                      \
     375             :                 return -ENOMEM;                                                 \
     376             :         }                                                                       \
     377             :         SLIST_REMOVE_HEAD(&(task)->accel_ch->task_aux_data_pool, link);               \
     378             :         (task)->has_aux = true;                                                      \
     379             : } while (0)
     380             : 
     381             : /* Accel framework public API for copy function */
     382             : int
     383           2 : spdk_accel_submit_copy(struct spdk_io_channel *ch, void *dst, void *src,
     384             :                        uint64_t nbytes, spdk_accel_completion_cb cb_fn, void *cb_arg)
     385             : {
     386           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     387             :         struct spdk_accel_task *accel_task;
     388             : 
     389           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     390           2 :         if (spdk_unlikely(accel_task == NULL)) {
     391           1 :                 return -ENOMEM;
     392             :         }
     393             : 
     394           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     395             : 
     396           1 :         accel_task->s.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_SRC];
     397           1 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     398           1 :         accel_task->d.iovs[0].iov_base = dst;
     399           1 :         accel_task->d.iovs[0].iov_len = nbytes;
     400           1 :         accel_task->d.iovcnt = 1;
     401           1 :         accel_task->s.iovs[0].iov_base = src;
     402           1 :         accel_task->s.iovs[0].iov_len = nbytes;
     403           1 :         accel_task->s.iovcnt = 1;
     404           1 :         accel_task->nbytes = nbytes;
     405           1 :         accel_task->op_code = SPDK_ACCEL_OPC_COPY;
     406           1 :         accel_task->src_domain = NULL;
     407           1 :         accel_task->dst_domain = NULL;
     408             : 
     409           1 :         return accel_submit_task(accel_ch, accel_task);
     410             : }
     411             : 
     412             : /* Accel framework public API for dual cast copy function */
     413             : int
     414           4 : spdk_accel_submit_dualcast(struct spdk_io_channel *ch, void *dst1,
     415             :                            void *dst2, void *src, uint64_t nbytes,
     416             :                            spdk_accel_completion_cb cb_fn, void *cb_arg)
     417             : {
     418           4 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     419             :         struct spdk_accel_task *accel_task;
     420             : 
     421           4 :         if ((uintptr_t)dst1 & (ALIGN_4K - 1) || (uintptr_t)dst2 & (ALIGN_4K - 1)) {
     422           2 :                 SPDK_ERRLOG("Dualcast requires 4K alignment on dst addresses\n");
     423           2 :                 return -EINVAL;
     424             :         }
     425             : 
     426           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     427           2 :         if (spdk_unlikely(accel_task == NULL)) {
     428           1 :                 return -ENOMEM;
     429             :         }
     430             : 
     431           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     432             : 
     433           1 :         accel_task->s.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_SRC];
     434           1 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     435           1 :         accel_task->d2.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST2];
     436           1 :         accel_task->d.iovs[0].iov_base = dst1;
     437           1 :         accel_task->d.iovs[0].iov_len = nbytes;
     438           1 :         accel_task->d.iovcnt = 1;
     439           1 :         accel_task->d2.iovs[0].iov_base = dst2;
     440           1 :         accel_task->d2.iovs[0].iov_len = nbytes;
     441           1 :         accel_task->d2.iovcnt = 1;
     442           1 :         accel_task->s.iovs[0].iov_base = src;
     443           1 :         accel_task->s.iovs[0].iov_len = nbytes;
     444           1 :         accel_task->s.iovcnt = 1;
     445           1 :         accel_task->nbytes = nbytes;
     446           1 :         accel_task->op_code = SPDK_ACCEL_OPC_DUALCAST;
     447           1 :         accel_task->src_domain = NULL;
     448           1 :         accel_task->dst_domain = NULL;
     449             : 
     450           1 :         return accel_submit_task(accel_ch, accel_task);
     451             : }
     452             : 
     453             : /* Accel framework public API for compare function */
     454             : 
     455             : int
     456           2 : spdk_accel_submit_compare(struct spdk_io_channel *ch, void *src1,
     457             :                           void *src2, uint64_t nbytes, spdk_accel_completion_cb cb_fn,
     458             :                           void *cb_arg)
     459             : {
     460           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     461             :         struct spdk_accel_task *accel_task;
     462             : 
     463           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     464           2 :         if (spdk_unlikely(accel_task == NULL)) {
     465           1 :                 return -ENOMEM;
     466             :         }
     467             : 
     468           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     469             : 
     470           1 :         accel_task->s.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_SRC];
     471           1 :         accel_task->s2.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_SRC2];
     472           1 :         accel_task->s.iovs[0].iov_base = src1;
     473           1 :         accel_task->s.iovs[0].iov_len = nbytes;
     474           1 :         accel_task->s.iovcnt = 1;
     475           1 :         accel_task->s2.iovs[0].iov_base = src2;
     476           1 :         accel_task->s2.iovs[0].iov_len = nbytes;
     477           1 :         accel_task->s2.iovcnt = 1;
     478           1 :         accel_task->nbytes = nbytes;
     479           1 :         accel_task->op_code = SPDK_ACCEL_OPC_COMPARE;
     480           1 :         accel_task->src_domain = NULL;
     481           1 :         accel_task->dst_domain = NULL;
     482             : 
     483           1 :         return accel_submit_task(accel_ch, accel_task);
     484             : }
     485             : 
     486             : /* Accel framework public API for fill function */
     487             : int
     488           2 : spdk_accel_submit_fill(struct spdk_io_channel *ch, void *dst,
     489             :                        uint8_t fill, uint64_t nbytes,
     490             :                        spdk_accel_completion_cb cb_fn, void *cb_arg)
     491             : {
     492           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     493             :         struct spdk_accel_task *accel_task;
     494             : 
     495           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     496           2 :         if (spdk_unlikely(accel_task == NULL)) {
     497           1 :                 return -ENOMEM;
     498             :         }
     499             : 
     500           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     501             : 
     502           1 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     503           1 :         accel_task->d.iovs[0].iov_base = dst;
     504           1 :         accel_task->d.iovs[0].iov_len = nbytes;
     505           1 :         accel_task->d.iovcnt = 1;
     506           1 :         accel_task->nbytes = nbytes;
     507           1 :         memset(&accel_task->fill_pattern, fill, sizeof(uint64_t));
     508           1 :         accel_task->op_code = SPDK_ACCEL_OPC_FILL;
     509           1 :         accel_task->src_domain = NULL;
     510           1 :         accel_task->dst_domain = NULL;
     511             : 
     512           1 :         return accel_submit_task(accel_ch, accel_task);
     513             : }
     514             : 
     515             : /* Accel framework public API for CRC-32C function */
     516             : int
     517           2 : spdk_accel_submit_crc32c(struct spdk_io_channel *ch, uint32_t *crc_dst,
     518             :                          void *src, uint32_t seed, uint64_t nbytes, spdk_accel_completion_cb cb_fn,
     519             :                          void *cb_arg)
     520             : {
     521           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     522             :         struct spdk_accel_task *accel_task;
     523             : 
     524           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     525           2 :         if (spdk_unlikely(accel_task == NULL)) {
     526           1 :                 return -ENOMEM;
     527             :         }
     528             : 
     529           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     530             : 
     531           1 :         accel_task->s.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_SRC];
     532           1 :         accel_task->s.iovs[0].iov_base = src;
     533           1 :         accel_task->s.iovs[0].iov_len = nbytes;
     534           1 :         accel_task->s.iovcnt = 1;
     535           1 :         accel_task->nbytes = nbytes;
     536           1 :         accel_task->crc_dst = crc_dst;
     537           1 :         accel_task->seed = seed;
     538           1 :         accel_task->op_code = SPDK_ACCEL_OPC_CRC32C;
     539           1 :         accel_task->src_domain = NULL;
     540           1 :         accel_task->dst_domain = NULL;
     541             : 
     542           1 :         return accel_submit_task(accel_ch, accel_task);
     543             : }
     544             : 
     545             : /* Accel framework public API for chained CRC-32C function */
     546             : int
     547           1 : spdk_accel_submit_crc32cv(struct spdk_io_channel *ch, uint32_t *crc_dst,
     548             :                           struct iovec *iov, uint32_t iov_cnt, uint32_t seed,
     549             :                           spdk_accel_completion_cb cb_fn, void *cb_arg)
     550             : {
     551           1 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     552             :         struct spdk_accel_task *accel_task;
     553             : 
     554           1 :         if (iov == NULL) {
     555           0 :                 SPDK_ERRLOG("iov should not be NULL");
     556           0 :                 return -EINVAL;
     557             :         }
     558             : 
     559           1 :         if (!iov_cnt) {
     560           0 :                 SPDK_ERRLOG("iovcnt should not be zero value\n");
     561           0 :                 return -EINVAL;
     562             :         }
     563             : 
     564           1 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     565           1 :         if (spdk_unlikely(accel_task == NULL)) {
     566           0 :                 SPDK_ERRLOG("no memory\n");
     567           0 :                 assert(0);
     568             :                 return -ENOMEM;
     569             :         }
     570             : 
     571           1 :         accel_task->s.iovs = iov;
     572           1 :         accel_task->s.iovcnt = iov_cnt;
     573           1 :         accel_task->nbytes = accel_get_iovlen(iov, iov_cnt);
     574           1 :         accel_task->crc_dst = crc_dst;
     575           1 :         accel_task->seed = seed;
     576           1 :         accel_task->op_code = SPDK_ACCEL_OPC_CRC32C;
     577           1 :         accel_task->src_domain = NULL;
     578           1 :         accel_task->dst_domain = NULL;
     579             : 
     580           1 :         return accel_submit_task(accel_ch, accel_task);
     581             : }
     582             : 
     583             : /* Accel framework public API for copy with CRC-32C function */
     584             : int
     585           2 : spdk_accel_submit_copy_crc32c(struct spdk_io_channel *ch, void *dst,
     586             :                               void *src, uint32_t *crc_dst, uint32_t seed, uint64_t nbytes,
     587             :                               spdk_accel_completion_cb cb_fn, void *cb_arg)
     588             : {
     589           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     590             :         struct spdk_accel_task *accel_task;
     591             : 
     592           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     593           2 :         if (spdk_unlikely(accel_task == NULL)) {
     594           1 :                 return -ENOMEM;
     595             :         }
     596             : 
     597           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     598             : 
     599           1 :         accel_task->s.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_SRC];
     600           1 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     601           1 :         accel_task->d.iovs[0].iov_base = dst;
     602           1 :         accel_task->d.iovs[0].iov_len = nbytes;
     603           1 :         accel_task->d.iovcnt = 1;
     604           1 :         accel_task->s.iovs[0].iov_base = src;
     605           1 :         accel_task->s.iovs[0].iov_len = nbytes;
     606           1 :         accel_task->s.iovcnt = 1;
     607           1 :         accel_task->nbytes = nbytes;
     608           1 :         accel_task->crc_dst = crc_dst;
     609           1 :         accel_task->seed = seed;
     610           1 :         accel_task->op_code = SPDK_ACCEL_OPC_COPY_CRC32C;
     611           1 :         accel_task->src_domain = NULL;
     612           1 :         accel_task->dst_domain = NULL;
     613             : 
     614           1 :         return accel_submit_task(accel_ch, accel_task);
     615             : }
     616             : 
     617             : /* Accel framework public API for chained copy + CRC-32C function */
     618             : int
     619           0 : spdk_accel_submit_copy_crc32cv(struct spdk_io_channel *ch, void *dst,
     620             :                                struct iovec *src_iovs, uint32_t iov_cnt, uint32_t *crc_dst,
     621             :                                uint32_t seed, spdk_accel_completion_cb cb_fn, void *cb_arg)
     622             : {
     623           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     624             :         struct spdk_accel_task *accel_task;
     625             :         uint64_t nbytes;
     626             : 
     627           0 :         if (src_iovs == NULL) {
     628           0 :                 SPDK_ERRLOG("iov should not be NULL");
     629           0 :                 return -EINVAL;
     630             :         }
     631             : 
     632           0 :         if (!iov_cnt) {
     633           0 :                 SPDK_ERRLOG("iovcnt should not be zero value\n");
     634           0 :                 return -EINVAL;
     635             :         }
     636             : 
     637           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     638           0 :         if (spdk_unlikely(accel_task == NULL)) {
     639           0 :                 SPDK_ERRLOG("no memory\n");
     640           0 :                 assert(0);
     641             :                 return -ENOMEM;
     642             :         }
     643             : 
     644           0 :         nbytes = accel_get_iovlen(src_iovs, iov_cnt);
     645             : 
     646           0 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     647             : 
     648           0 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     649           0 :         accel_task->d.iovs[0].iov_base = dst;
     650           0 :         accel_task->d.iovs[0].iov_len = nbytes;
     651           0 :         accel_task->d.iovcnt = 1;
     652           0 :         accel_task->s.iovs = src_iovs;
     653           0 :         accel_task->s.iovcnt = iov_cnt;
     654           0 :         accel_task->nbytes = nbytes;
     655           0 :         accel_task->crc_dst = crc_dst;
     656           0 :         accel_task->seed = seed;
     657           0 :         accel_task->op_code = SPDK_ACCEL_OPC_COPY_CRC32C;
     658           0 :         accel_task->src_domain = NULL;
     659           0 :         accel_task->dst_domain = NULL;
     660             : 
     661           0 :         return accel_submit_task(accel_ch, accel_task);
     662             : }
     663             : 
     664             : int
     665           0 : spdk_accel_submit_compress(struct spdk_io_channel *ch, void *dst, uint64_t nbytes,
     666             :                            struct iovec *src_iovs, size_t src_iovcnt, uint32_t *output_size,
     667             :                            spdk_accel_completion_cb cb_fn, void *cb_arg)
     668             : {
     669           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     670             :         struct spdk_accel_task *accel_task;
     671             : 
     672           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     673           0 :         if (spdk_unlikely(accel_task == NULL)) {
     674           0 :                 return -ENOMEM;
     675             :         }
     676             : 
     677           0 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     678             : 
     679           0 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     680           0 :         accel_task->d.iovs[0].iov_base = dst;
     681           0 :         accel_task->d.iovs[0].iov_len = nbytes;
     682           0 :         accel_task->d.iovcnt = 1;
     683           0 :         accel_task->output_size = output_size;
     684           0 :         accel_task->s.iovs = src_iovs;
     685           0 :         accel_task->s.iovcnt = src_iovcnt;
     686           0 :         accel_task->nbytes = nbytes;
     687           0 :         accel_task->op_code = SPDK_ACCEL_OPC_COMPRESS;
     688           0 :         accel_task->src_domain = NULL;
     689           0 :         accel_task->dst_domain = NULL;
     690             : 
     691           0 :         return accel_submit_task(accel_ch, accel_task);
     692             : }
     693             : 
     694             : int
     695           0 : spdk_accel_submit_decompress(struct spdk_io_channel *ch, struct iovec *dst_iovs,
     696             :                              size_t dst_iovcnt, struct iovec *src_iovs, size_t src_iovcnt,
     697             :                              uint32_t *output_size, spdk_accel_completion_cb cb_fn,
     698             :                              void *cb_arg)
     699             : {
     700           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     701             :         struct spdk_accel_task *accel_task;
     702             : 
     703           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     704           0 :         if (spdk_unlikely(accel_task == NULL)) {
     705           0 :                 return -ENOMEM;
     706             :         }
     707             : 
     708           0 :         accel_task->output_size = output_size;
     709           0 :         accel_task->s.iovs = src_iovs;
     710           0 :         accel_task->s.iovcnt = src_iovcnt;
     711           0 :         accel_task->d.iovs = dst_iovs;
     712           0 :         accel_task->d.iovcnt = dst_iovcnt;
     713           0 :         accel_task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
     714           0 :         accel_task->op_code = SPDK_ACCEL_OPC_DECOMPRESS;
     715           0 :         accel_task->src_domain = NULL;
     716           0 :         accel_task->dst_domain = NULL;
     717             : 
     718           0 :         return accel_submit_task(accel_ch, accel_task);
     719             : }
     720             : 
     721             : int
     722           0 : spdk_accel_submit_encrypt(struct spdk_io_channel *ch, struct spdk_accel_crypto_key *key,
     723             :                           struct iovec *dst_iovs, uint32_t dst_iovcnt,
     724             :                           struct iovec *src_iovs, uint32_t src_iovcnt,
     725             :                           uint64_t iv, uint32_t block_size,
     726             :                           spdk_accel_completion_cb cb_fn, void *cb_arg)
     727             : {
     728           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     729             :         struct spdk_accel_task *accel_task;
     730             : 
     731           0 :         if (spdk_unlikely(!dst_iovs || !dst_iovcnt || !src_iovs || !src_iovcnt || !key || !block_size)) {
     732           0 :                 return -EINVAL;
     733             :         }
     734             : 
     735           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     736           0 :         if (spdk_unlikely(accel_task == NULL)) {
     737           0 :                 return -ENOMEM;
     738             :         }
     739             : 
     740           0 :         accel_task->crypto_key = key;
     741           0 :         accel_task->s.iovs = src_iovs;
     742           0 :         accel_task->s.iovcnt = src_iovcnt;
     743           0 :         accel_task->d.iovs = dst_iovs;
     744           0 :         accel_task->d.iovcnt = dst_iovcnt;
     745           0 :         accel_task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
     746           0 :         accel_task->iv = iv;
     747           0 :         accel_task->block_size = block_size;
     748           0 :         accel_task->op_code = SPDK_ACCEL_OPC_ENCRYPT;
     749           0 :         accel_task->src_domain = NULL;
     750           0 :         accel_task->dst_domain = NULL;
     751             : 
     752           0 :         return accel_submit_task(accel_ch, accel_task);
     753             : }
     754             : 
     755             : int
     756           0 : spdk_accel_submit_decrypt(struct spdk_io_channel *ch, struct spdk_accel_crypto_key *key,
     757             :                           struct iovec *dst_iovs, uint32_t dst_iovcnt,
     758             :                           struct iovec *src_iovs, uint32_t src_iovcnt,
     759             :                           uint64_t iv, uint32_t block_size,
     760             :                           spdk_accel_completion_cb cb_fn, void *cb_arg)
     761             : {
     762           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     763             :         struct spdk_accel_task *accel_task;
     764             : 
     765           0 :         if (spdk_unlikely(!dst_iovs || !dst_iovcnt || !src_iovs || !src_iovcnt || !key || !block_size)) {
     766           0 :                 return -EINVAL;
     767             :         }
     768             : 
     769           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     770           0 :         if (spdk_unlikely(accel_task == NULL)) {
     771           0 :                 return -ENOMEM;
     772             :         }
     773             : 
     774           0 :         accel_task->crypto_key = key;
     775           0 :         accel_task->s.iovs = src_iovs;
     776           0 :         accel_task->s.iovcnt = src_iovcnt;
     777           0 :         accel_task->d.iovs = dst_iovs;
     778           0 :         accel_task->d.iovcnt = dst_iovcnt;
     779           0 :         accel_task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
     780           0 :         accel_task->iv = iv;
     781           0 :         accel_task->block_size = block_size;
     782           0 :         accel_task->op_code = SPDK_ACCEL_OPC_DECRYPT;
     783           0 :         accel_task->src_domain = NULL;
     784           0 :         accel_task->dst_domain = NULL;
     785             : 
     786           0 :         return accel_submit_task(accel_ch, accel_task);
     787             : }
     788             : 
     789             : int
     790           2 : spdk_accel_submit_xor(struct spdk_io_channel *ch, void *dst, void **sources, uint32_t nsrcs,
     791             :                       uint64_t nbytes, spdk_accel_completion_cb cb_fn, void *cb_arg)
     792             : {
     793           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     794             :         struct spdk_accel_task *accel_task;
     795             : 
     796           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     797           2 :         if (spdk_unlikely(accel_task == NULL)) {
     798           1 :                 return -ENOMEM;
     799             :         }
     800             : 
     801           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     802             : 
     803           1 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     804           1 :         accel_task->nsrcs.srcs = sources;
     805           1 :         accel_task->nsrcs.cnt = nsrcs;
     806           1 :         accel_task->d.iovs[0].iov_base = dst;
     807           1 :         accel_task->d.iovs[0].iov_len = nbytes;
     808           1 :         accel_task->d.iovcnt = 1;
     809           1 :         accel_task->nbytes = nbytes;
     810           1 :         accel_task->op_code = SPDK_ACCEL_OPC_XOR;
     811           1 :         accel_task->src_domain = NULL;
     812           1 :         accel_task->dst_domain = NULL;
     813             : 
     814           1 :         return accel_submit_task(accel_ch, accel_task);
     815             : }
     816             : 
     817             : int
     818           0 : spdk_accel_submit_dif_verify(struct spdk_io_channel *ch,
     819             :                              struct iovec *iovs, size_t iovcnt, uint32_t num_blocks,
     820             :                              const struct spdk_dif_ctx *ctx, struct spdk_dif_error *err,
     821             :                              spdk_accel_completion_cb cb_fn, void *cb_arg)
     822             : {
     823           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     824             :         struct spdk_accel_task *accel_task;
     825             : 
     826           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     827           0 :         if (accel_task == NULL) {
     828           0 :                 return -ENOMEM;
     829             :         }
     830             : 
     831           0 :         accel_task->s.iovs = iovs;
     832           0 :         accel_task->s.iovcnt = iovcnt;
     833           0 :         accel_task->dif.ctx = ctx;
     834           0 :         accel_task->dif.err = err;
     835           0 :         accel_task->dif.num_blocks = num_blocks;
     836           0 :         accel_task->nbytes = num_blocks * ctx->block_size;
     837           0 :         accel_task->op_code = SPDK_ACCEL_OPC_DIF_VERIFY;
     838           0 :         accel_task->src_domain = NULL;
     839           0 :         accel_task->dst_domain = NULL;
     840             : 
     841           0 :         return accel_submit_task(accel_ch, accel_task);
     842             : }
     843             : 
     844             : int
     845           0 : spdk_accel_submit_dif_generate(struct spdk_io_channel *ch,
     846             :                                struct iovec *iovs, size_t iovcnt, uint32_t num_blocks,
     847             :                                const struct spdk_dif_ctx *ctx,
     848             :                                spdk_accel_completion_cb cb_fn, void *cb_arg)
     849             : {
     850           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     851             :         struct spdk_accel_task *accel_task;
     852             : 
     853           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     854           0 :         if (accel_task == NULL) {
     855           0 :                 return -ENOMEM;
     856             :         }
     857             : 
     858           0 :         accel_task->s.iovs = iovs;
     859           0 :         accel_task->s.iovcnt = iovcnt;
     860           0 :         accel_task->dif.ctx = ctx;
     861           0 :         accel_task->dif.num_blocks = num_blocks;
     862           0 :         accel_task->nbytes = num_blocks * ctx->block_size;
     863           0 :         accel_task->op_code = SPDK_ACCEL_OPC_DIF_GENERATE;
     864           0 :         accel_task->src_domain = NULL;
     865           0 :         accel_task->dst_domain = NULL;
     866             : 
     867           0 :         return accel_submit_task(accel_ch, accel_task);
     868             : }
     869             : 
     870             : int
     871           0 : spdk_accel_submit_dif_generate_copy(struct spdk_io_channel *ch, struct iovec *dst_iovs,
     872             :                                     size_t dst_iovcnt, struct iovec *src_iovs, size_t src_iovcnt,
     873             :                                     uint32_t num_blocks, const struct spdk_dif_ctx *ctx,
     874             :                                     spdk_accel_completion_cb cb_fn, void *cb_arg)
     875             : {
     876           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     877             :         struct spdk_accel_task *accel_task;
     878             : 
     879           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     880           0 :         if (accel_task == NULL) {
     881           0 :                 return -ENOMEM;
     882             :         }
     883             : 
     884           0 :         accel_task->s.iovs = src_iovs;
     885           0 :         accel_task->s.iovcnt = src_iovcnt;
     886           0 :         accel_task->d.iovs = dst_iovs;
     887           0 :         accel_task->d.iovcnt = dst_iovcnt;
     888           0 :         accel_task->dif.ctx = ctx;
     889           0 :         accel_task->dif.num_blocks = num_blocks;
     890           0 :         accel_task->nbytes = num_blocks * ctx->block_size;
     891           0 :         accel_task->op_code = SPDK_ACCEL_OPC_DIF_GENERATE_COPY;
     892           0 :         accel_task->src_domain = NULL;
     893           0 :         accel_task->dst_domain = NULL;
     894             : 
     895           0 :         return accel_submit_task(accel_ch, accel_task);
     896             : }
     897             : 
     898             : int
     899           0 : spdk_accel_submit_dif_verify_copy(struct spdk_io_channel *ch,
     900             :                                   struct iovec *dst_iovs, size_t dst_iovcnt,
     901             :                                   struct iovec *src_iovs, size_t src_iovcnt, uint32_t num_blocks,
     902             :                                   const struct spdk_dif_ctx *ctx, struct spdk_dif_error *err,
     903             :                                   spdk_accel_completion_cb cb_fn, void *cb_arg)
     904             : {
     905           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     906             :         struct spdk_accel_task *accel_task;
     907             : 
     908           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     909           0 :         if (accel_task == NULL) {
     910           0 :                 return -ENOMEM;
     911             :         }
     912             : 
     913           0 :         accel_task->s.iovs = src_iovs;
     914           0 :         accel_task->s.iovcnt = src_iovcnt;
     915           0 :         accel_task->d.iovs = dst_iovs;
     916           0 :         accel_task->d.iovcnt = dst_iovcnt;
     917           0 :         accel_task->dif.ctx = ctx;
     918           0 :         accel_task->dif.err = err;
     919           0 :         accel_task->dif.num_blocks = num_blocks;
     920           0 :         accel_task->nbytes = num_blocks * ctx->block_size;
     921           0 :         accel_task->op_code = SPDK_ACCEL_OPC_DIF_VERIFY_COPY;
     922           0 :         accel_task->src_domain = NULL;
     923           0 :         accel_task->dst_domain = NULL;
     924             : 
     925           0 :         return accel_submit_task(accel_ch, accel_task);
     926             : }
     927             : 
     928             : static inline struct accel_buffer *
     929          33 : accel_get_buf(struct accel_io_channel *ch, uint64_t len)
     930             : {
     931             :         struct accel_buffer *buf;
     932             : 
     933          33 :         buf = SLIST_FIRST(&ch->buf_pool);
     934          33 :         if (spdk_unlikely(buf == NULL)) {
     935           0 :                 accel_update_stats(ch, retry.bufdesc, 1);
     936           0 :                 return NULL;
     937             :         }
     938             : 
     939          33 :         SLIST_REMOVE_HEAD(&ch->buf_pool, link);
     940          33 :         buf->len = len;
     941          33 :         buf->buf = NULL;
     942          33 :         buf->seq = NULL;
     943          33 :         buf->cb_fn = NULL;
     944             : 
     945          33 :         return buf;
     946             : }
     947             : 
     948             : static inline void
     949          33 : accel_put_buf(struct accel_io_channel *ch, struct accel_buffer *buf)
     950             : {
     951          33 :         if (buf->buf != NULL) {
     952          29 :                 spdk_iobuf_put(&ch->iobuf, buf->buf, buf->len);
     953             :         }
     954             : 
     955          33 :         SLIST_INSERT_HEAD(&ch->buf_pool, buf, link);
     956          33 : }
     957             : 
     958             : static inline struct spdk_accel_sequence *
     959          60 : accel_sequence_get(struct accel_io_channel *ch)
     960             : {
     961             :         struct spdk_accel_sequence *seq;
     962             : 
     963          60 :         seq = SLIST_FIRST(&ch->seq_pool);
     964          60 :         if (spdk_unlikely(seq == NULL)) {
     965           3 :                 accel_update_stats(ch, retry.sequence, 1);
     966           3 :                 return NULL;
     967             :         }
     968             : 
     969          57 :         accel_update_stats(ch, sequence_outstanding, 1);
     970          57 :         SLIST_REMOVE_HEAD(&ch->seq_pool, link);
     971             : 
     972          57 :         TAILQ_INIT(&seq->tasks);
     973          57 :         SLIST_INIT(&seq->bounce_bufs);
     974             : 
     975          57 :         seq->ch = ch;
     976          57 :         seq->status = 0;
     977          57 :         seq->state = ACCEL_SEQUENCE_STATE_INIT;
     978          57 :         seq->in_process_sequence = false;
     979             : 
     980          57 :         return seq;
     981             : }
     982             : 
     983             : static inline void
     984          57 : accel_sequence_put(struct spdk_accel_sequence *seq)
     985             : {
     986          57 :         struct accel_io_channel *ch = seq->ch;
     987             :         struct accel_buffer *buf;
     988             : 
     989          76 :         while (!SLIST_EMPTY(&seq->bounce_bufs)) {
     990          19 :                 buf = SLIST_FIRST(&seq->bounce_bufs);
     991          19 :                 SLIST_REMOVE_HEAD(&seq->bounce_bufs, link);
     992          19 :                 accel_put_buf(seq->ch, buf);
     993             :         }
     994             : 
     995          57 :         assert(TAILQ_EMPTY(&seq->tasks));
     996          57 :         seq->ch = NULL;
     997             : 
     998          57 :         SLIST_INSERT_HEAD(&ch->seq_pool, seq, link);
     999          57 :         accel_update_stats(ch, sequence_outstanding, -1);
    1000          57 : }
    1001             : 
    1002             : static void accel_sequence_task_cb(void *cb_arg, int status);
    1003             : 
    1004             : static inline struct spdk_accel_task *
    1005         134 : accel_sequence_get_task(struct accel_io_channel *ch, struct spdk_accel_sequence *seq,
    1006             :                         spdk_accel_step_cb cb_fn, void *cb_arg)
    1007             : {
    1008             :         struct spdk_accel_task *task;
    1009             : 
    1010         134 :         task = _get_task(ch, NULL, NULL);
    1011         134 :         if (spdk_unlikely(task == NULL)) {
    1012           3 :                 return task;
    1013             :         }
    1014             : 
    1015         131 :         task->step_cb_fn = cb_fn;
    1016         131 :         task->cb_arg = cb_arg;
    1017         131 :         task->seq = seq;
    1018             : 
    1019         131 :         return task;
    1020             : }
    1021             : 
    1022             : int
    1023          35 : spdk_accel_append_copy(struct spdk_accel_sequence **pseq, struct spdk_io_channel *ch,
    1024             :                        struct iovec *dst_iovs, uint32_t dst_iovcnt,
    1025             :                        struct spdk_memory_domain *dst_domain, void *dst_domain_ctx,
    1026             :                        struct iovec *src_iovs, uint32_t src_iovcnt,
    1027             :                        struct spdk_memory_domain *src_domain, void *src_domain_ctx,
    1028             :                        spdk_accel_step_cb cb_fn, void *cb_arg)
    1029             : {
    1030          35 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1031             :         struct spdk_accel_task *task;
    1032          35 :         struct spdk_accel_sequence *seq = *pseq;
    1033             : 
    1034          35 :         if (seq == NULL) {
    1035          12 :                 seq = accel_sequence_get(accel_ch);
    1036          12 :                 if (spdk_unlikely(seq == NULL)) {
    1037           1 :                         return -ENOMEM;
    1038             :                 }
    1039             :         }
    1040             : 
    1041          34 :         assert(seq->ch == accel_ch);
    1042          34 :         task = accel_sequence_get_task(accel_ch, seq, cb_fn, cb_arg);
    1043          34 :         if (spdk_unlikely(task == NULL)) {
    1044           1 :                 if (*pseq == NULL) {
    1045           1 :                         accel_sequence_put(seq);
    1046             :                 }
    1047             : 
    1048           1 :                 return -ENOMEM;
    1049             :         }
    1050             : 
    1051          33 :         task->dst_domain = dst_domain;
    1052          33 :         task->dst_domain_ctx = dst_domain_ctx;
    1053          33 :         task->d.iovs = dst_iovs;
    1054          33 :         task->d.iovcnt = dst_iovcnt;
    1055          33 :         task->src_domain = src_domain;
    1056          33 :         task->src_domain_ctx = src_domain_ctx;
    1057          33 :         task->s.iovs = src_iovs;
    1058          33 :         task->s.iovcnt = src_iovcnt;
    1059          33 :         task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
    1060          33 :         task->op_code = SPDK_ACCEL_OPC_COPY;
    1061             : 
    1062          33 :         TAILQ_INSERT_TAIL(&seq->tasks, task, seq_link);
    1063          33 :         *pseq = seq;
    1064             : 
    1065          33 :         return 0;
    1066             : }
    1067             : 
    1068             : int
    1069          39 : spdk_accel_append_fill(struct spdk_accel_sequence **pseq, struct spdk_io_channel *ch,
    1070             :                        void *buf, uint64_t len,
    1071             :                        struct spdk_memory_domain *domain, void *domain_ctx, uint8_t pattern,
    1072             :                        spdk_accel_step_cb cb_fn, void *cb_arg)
    1073             : {
    1074          39 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1075             :         struct spdk_accel_task *task;
    1076          39 :         struct spdk_accel_sequence *seq = *pseq;
    1077             : 
    1078          39 :         if (seq == NULL) {
    1079          23 :                 seq = accel_sequence_get(accel_ch);
    1080          23 :                 if (spdk_unlikely(seq == NULL)) {
    1081           1 :                         return -ENOMEM;
    1082             :                 }
    1083             :         }
    1084             : 
    1085          38 :         assert(seq->ch == accel_ch);
    1086          38 :         task = accel_sequence_get_task(accel_ch, seq, cb_fn, cb_arg);
    1087          38 :         if (spdk_unlikely(task == NULL)) {
    1088           1 :                 if (*pseq == NULL) {
    1089           1 :                         accel_sequence_put(seq);
    1090             :                 }
    1091             : 
    1092           1 :                 return -ENOMEM;
    1093             :         }
    1094             : 
    1095          37 :         memset(&task->fill_pattern, pattern, sizeof(uint64_t));
    1096             : 
    1097          37 :         task->aux = SLIST_FIRST(&task->accel_ch->task_aux_data_pool);
    1098          37 :         if (spdk_unlikely(!task->aux)) {
    1099           0 :                 SPDK_ERRLOG("Fatal problem, aux data was not allocated\n");
    1100           0 :                 if (*pseq == NULL) {
    1101           0 :                         accel_sequence_put((seq));
    1102             :                 }
    1103             : 
    1104           0 :                 task->seq = NULL;
    1105           0 :                 _put_task(task->accel_ch, task);
    1106           0 :                 assert(0);
    1107             :                 return -ENOMEM;
    1108             :         }
    1109          37 :         SLIST_REMOVE_HEAD(&task->accel_ch->task_aux_data_pool, link);
    1110          37 :         task->has_aux = true;
    1111             : 
    1112          37 :         task->d.iovs = &task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
    1113          37 :         task->d.iovs[0].iov_base = buf;
    1114          37 :         task->d.iovs[0].iov_len = len;
    1115          37 :         task->d.iovcnt = 1;
    1116          37 :         task->nbytes = len;
    1117          37 :         task->src_domain = NULL;
    1118          37 :         task->dst_domain = domain;
    1119          37 :         task->dst_domain_ctx = domain_ctx;
    1120          37 :         task->op_code = SPDK_ACCEL_OPC_FILL;
    1121             : 
    1122          37 :         TAILQ_INSERT_TAIL(&seq->tasks, task, seq_link);
    1123          37 :         *pseq = seq;
    1124             : 
    1125          37 :         return 0;
    1126             : }
    1127             : 
    1128             : int
    1129          40 : spdk_accel_append_decompress(struct spdk_accel_sequence **pseq, struct spdk_io_channel *ch,
    1130             :                              struct iovec *dst_iovs, size_t dst_iovcnt,
    1131             :                              struct spdk_memory_domain *dst_domain, void *dst_domain_ctx,
    1132             :                              struct iovec *src_iovs, size_t src_iovcnt,
    1133             :                              struct spdk_memory_domain *src_domain, void *src_domain_ctx,
    1134             :                              spdk_accel_step_cb cb_fn, void *cb_arg)
    1135             : {
    1136          40 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1137             :         struct spdk_accel_task *task;
    1138          40 :         struct spdk_accel_sequence *seq = *pseq;
    1139             : 
    1140          40 :         if (seq == NULL) {
    1141          17 :                 seq = accel_sequence_get(accel_ch);
    1142          17 :                 if (spdk_unlikely(seq == NULL)) {
    1143           1 :                         return -ENOMEM;
    1144             :                 }
    1145             :         }
    1146             : 
    1147          39 :         assert(seq->ch == accel_ch);
    1148          39 :         task = accel_sequence_get_task(accel_ch, seq, cb_fn, cb_arg);
    1149          39 :         if (spdk_unlikely(task == NULL)) {
    1150           1 :                 if (*pseq == NULL) {
    1151           1 :                         accel_sequence_put(seq);
    1152             :                 }
    1153             : 
    1154           1 :                 return -ENOMEM;
    1155             :         }
    1156             : 
    1157             :         /* TODO: support output_size for chaining */
    1158          38 :         task->output_size = NULL;
    1159          38 :         task->dst_domain = dst_domain;
    1160          38 :         task->dst_domain_ctx = dst_domain_ctx;
    1161          38 :         task->d.iovs = dst_iovs;
    1162          38 :         task->d.iovcnt = dst_iovcnt;
    1163          38 :         task->src_domain = src_domain;
    1164          38 :         task->src_domain_ctx = src_domain_ctx;
    1165          38 :         task->s.iovs = src_iovs;
    1166          38 :         task->s.iovcnt = src_iovcnt;
    1167          38 :         task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
    1168          38 :         task->op_code = SPDK_ACCEL_OPC_DECOMPRESS;
    1169             : 
    1170          38 :         TAILQ_INSERT_TAIL(&seq->tasks, task, seq_link);
    1171          38 :         *pseq = seq;
    1172             : 
    1173          38 :         return 0;
    1174             : }
    1175             : 
    1176             : int
    1177           8 : spdk_accel_append_encrypt(struct spdk_accel_sequence **pseq, struct spdk_io_channel *ch,
    1178             :                           struct spdk_accel_crypto_key *key,
    1179             :                           struct iovec *dst_iovs, uint32_t dst_iovcnt,
    1180             :                           struct spdk_memory_domain *dst_domain, void *dst_domain_ctx,
    1181             :                           struct iovec *src_iovs, uint32_t src_iovcnt,
    1182             :                           struct spdk_memory_domain *src_domain, void *src_domain_ctx,
    1183             :                           uint64_t iv, uint32_t block_size,
    1184             :                           spdk_accel_step_cb cb_fn, void *cb_arg)
    1185             : {
    1186           8 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1187             :         struct spdk_accel_task *task;
    1188           8 :         struct spdk_accel_sequence *seq = *pseq;
    1189             : 
    1190           8 :         assert(dst_iovs && dst_iovcnt && src_iovs && src_iovcnt && key && block_size);
    1191             : 
    1192           8 :         if (seq == NULL) {
    1193           6 :                 seq = accel_sequence_get(accel_ch);
    1194           6 :                 if (spdk_unlikely(seq == NULL)) {
    1195           0 :                         return -ENOMEM;
    1196             :                 }
    1197             :         }
    1198             : 
    1199           8 :         assert(seq->ch == accel_ch);
    1200           8 :         task = accel_sequence_get_task(accel_ch, seq, cb_fn, cb_arg);
    1201           8 :         if (spdk_unlikely(task == NULL)) {
    1202           0 :                 if (*pseq == NULL) {
    1203           0 :                         accel_sequence_put(seq);
    1204             :                 }
    1205             : 
    1206           0 :                 return -ENOMEM;
    1207             :         }
    1208             : 
    1209           8 :         task->crypto_key = key;
    1210           8 :         task->src_domain = src_domain;
    1211           8 :         task->src_domain_ctx = src_domain_ctx;
    1212           8 :         task->s.iovs = src_iovs;
    1213           8 :         task->s.iovcnt = src_iovcnt;
    1214           8 :         task->dst_domain = dst_domain;
    1215           8 :         task->dst_domain_ctx = dst_domain_ctx;
    1216           8 :         task->d.iovs = dst_iovs;
    1217           8 :         task->d.iovcnt = dst_iovcnt;
    1218           8 :         task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
    1219           8 :         task->iv = iv;
    1220           8 :         task->block_size = block_size;
    1221           8 :         task->op_code = SPDK_ACCEL_OPC_ENCRYPT;
    1222             : 
    1223           8 :         TAILQ_INSERT_TAIL(&seq->tasks, task, seq_link);
    1224           8 :         *pseq = seq;
    1225             : 
    1226           8 :         return 0;
    1227             : }
    1228             : 
    1229             : int
    1230           9 : spdk_accel_append_decrypt(struct spdk_accel_sequence **pseq, struct spdk_io_channel *ch,
    1231             :                           struct spdk_accel_crypto_key *key,
    1232             :                           struct iovec *dst_iovs, uint32_t dst_iovcnt,
    1233             :                           struct spdk_memory_domain *dst_domain, void *dst_domain_ctx,
    1234             :                           struct iovec *src_iovs, uint32_t src_iovcnt,
    1235             :                           struct spdk_memory_domain *src_domain, void *src_domain_ctx,
    1236             :                           uint64_t iv, uint32_t block_size,
    1237             :                           spdk_accel_step_cb cb_fn, void *cb_arg)
    1238             : {
    1239           9 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1240             :         struct spdk_accel_task *task;
    1241           9 :         struct spdk_accel_sequence *seq = *pseq;
    1242             : 
    1243           9 :         assert(dst_iovs && dst_iovcnt && src_iovs && src_iovcnt && key && block_size);
    1244             : 
    1245           9 :         if (seq == NULL) {
    1246           0 :                 seq = accel_sequence_get(accel_ch);
    1247           0 :                 if (spdk_unlikely(seq == NULL)) {
    1248           0 :                         return -ENOMEM;
    1249             :                 }
    1250             :         }
    1251             : 
    1252           9 :         assert(seq->ch == accel_ch);
    1253           9 :         task = accel_sequence_get_task(accel_ch, seq, cb_fn, cb_arg);
    1254           9 :         if (spdk_unlikely(task == NULL)) {
    1255           0 :                 if (*pseq == NULL) {
    1256           0 :                         accel_sequence_put(seq);
    1257             :                 }
    1258             : 
    1259           0 :                 return -ENOMEM;
    1260             :         }
    1261             : 
    1262           9 :         task->crypto_key = key;
    1263           9 :         task->src_domain = src_domain;
    1264           9 :         task->src_domain_ctx = src_domain_ctx;
    1265           9 :         task->s.iovs = src_iovs;
    1266           9 :         task->s.iovcnt = src_iovcnt;
    1267           9 :         task->dst_domain = dst_domain;
    1268           9 :         task->dst_domain_ctx = dst_domain_ctx;
    1269           9 :         task->d.iovs = dst_iovs;
    1270           9 :         task->d.iovcnt = dst_iovcnt;
    1271           9 :         task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
    1272           9 :         task->iv = iv;
    1273           9 :         task->block_size = block_size;
    1274           9 :         task->op_code = SPDK_ACCEL_OPC_DECRYPT;
    1275             : 
    1276           9 :         TAILQ_INSERT_TAIL(&seq->tasks, task, seq_link);
    1277           9 :         *pseq = seq;
    1278             : 
    1279           9 :         return 0;
    1280             : }
    1281             : 
    1282             : int
    1283           6 : spdk_accel_append_crc32c(struct spdk_accel_sequence **pseq, struct spdk_io_channel *ch,
    1284             :                          uint32_t *dst, struct iovec *iovs, uint32_t iovcnt,
    1285             :                          struct spdk_memory_domain *domain, void *domain_ctx,
    1286             :                          uint32_t seed, spdk_accel_step_cb cb_fn, void *cb_arg)
    1287             : {
    1288           6 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1289             :         struct spdk_accel_task *task;
    1290           6 :         struct spdk_accel_sequence *seq = *pseq;
    1291             : 
    1292           6 :         if (seq == NULL) {
    1293           2 :                 seq = accel_sequence_get(accel_ch);
    1294           2 :                 if (spdk_unlikely(seq == NULL)) {
    1295           0 :                         return -ENOMEM;
    1296             :                 }
    1297             :         }
    1298             : 
    1299           6 :         assert(seq->ch == accel_ch);
    1300           6 :         task = accel_sequence_get_task(accel_ch, seq, cb_fn, cb_arg);
    1301           6 :         if (spdk_unlikely(task == NULL)) {
    1302           0 :                 if (*pseq == NULL) {
    1303           0 :                         accel_sequence_put(seq);
    1304             :                 }
    1305             : 
    1306           0 :                 return -ENOMEM;
    1307             :         }
    1308             : 
    1309           6 :         task->s.iovs = iovs;
    1310           6 :         task->s.iovcnt = iovcnt;
    1311           6 :         task->src_domain = domain;
    1312           6 :         task->src_domain_ctx = domain_ctx;
    1313           6 :         task->nbytes = accel_get_iovlen(iovs, iovcnt);
    1314           6 :         task->crc_dst = dst;
    1315           6 :         task->seed = seed;
    1316           6 :         task->op_code = SPDK_ACCEL_OPC_CRC32C;
    1317           6 :         task->dst_domain = NULL;
    1318             : 
    1319           6 :         TAILQ_INSERT_TAIL(&seq->tasks, task, seq_link);
    1320           6 :         *pseq = seq;
    1321             : 
    1322           6 :         return 0;
    1323             : }
    1324             : 
    1325             : int
    1326          14 : spdk_accel_get_buf(struct spdk_io_channel *ch, uint64_t len, void **buf,
    1327             :                    struct spdk_memory_domain **domain, void **domain_ctx)
    1328             : {
    1329          14 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1330             :         struct accel_buffer *accel_buf;
    1331             : 
    1332          14 :         accel_buf = accel_get_buf(accel_ch, len);
    1333          14 :         if (spdk_unlikely(accel_buf == NULL)) {
    1334           0 :                 return -ENOMEM;
    1335             :         }
    1336             : 
    1337          14 :         accel_buf->ch = accel_ch;
    1338             : 
    1339             :         /* We always return the same pointer and identify the buffers through domain_ctx */
    1340          14 :         *buf = ACCEL_BUFFER_BASE;
    1341          14 :         *domain_ctx = accel_buf;
    1342          14 :         *domain = g_accel_domain;
    1343             : 
    1344          14 :         return 0;
    1345             : }
    1346             : 
    1347             : void
    1348          14 : spdk_accel_put_buf(struct spdk_io_channel *ch, void *buf,
    1349             :                    struct spdk_memory_domain *domain, void *domain_ctx)
    1350             : {
    1351          14 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1352          14 :         struct accel_buffer *accel_buf = domain_ctx;
    1353             : 
    1354          14 :         assert(domain == g_accel_domain);
    1355          14 :         assert(buf == ACCEL_BUFFER_BASE);
    1356             : 
    1357          14 :         accel_put_buf(accel_ch, accel_buf);
    1358          14 : }
    1359             : 
    1360             : static void
    1361         131 : accel_sequence_complete_task(struct spdk_accel_sequence *seq, struct spdk_accel_task *task)
    1362             : {
    1363         131 :         struct accel_io_channel *ch = seq->ch;
    1364             :         spdk_accel_step_cb cb_fn;
    1365             :         void *cb_arg;
    1366             : 
    1367         131 :         TAILQ_REMOVE(&seq->tasks, task, seq_link);
    1368         131 :         cb_fn = task->step_cb_fn;
    1369         131 :         cb_arg = task->cb_arg;
    1370         131 :         task->seq = NULL;
    1371         131 :         if (task->has_aux) {
    1372          58 :                 SLIST_INSERT_HEAD(&ch->task_aux_data_pool, task->aux, link);
    1373          58 :                 task->aux = NULL;
    1374          58 :                 task->has_aux = false;
    1375             :         }
    1376             : 
    1377         131 :         _put_task(ch, task);
    1378             : 
    1379         131 :         if (cb_fn != NULL) {
    1380         131 :                 cb_fn(cb_arg);
    1381             :         }
    1382         131 : }
    1383             : 
    1384             : static void
    1385          54 : accel_sequence_complete_tasks(struct spdk_accel_sequence *seq)
    1386             : {
    1387             :         struct spdk_accel_task *task;
    1388             : 
    1389          72 :         while (!TAILQ_EMPTY(&seq->tasks)) {
    1390          18 :                 task = TAILQ_FIRST(&seq->tasks);
    1391          18 :                 accel_sequence_complete_task(seq, task);
    1392             :         }
    1393          54 : }
    1394             : 
    1395             : static void
    1396          52 : accel_sequence_complete(struct spdk_accel_sequence *seq)
    1397             : {
    1398          52 :         spdk_accel_completion_cb cb_fn = seq->cb_fn;
    1399          52 :         void *cb_arg = seq->cb_arg;
    1400          52 :         int status = seq->status;
    1401             : 
    1402          52 :         SPDK_DEBUGLOG(accel, "Completed sequence: %p with status: %d\n", seq, status);
    1403             : 
    1404          52 :         accel_update_stats(seq->ch, sequence_executed, 1);
    1405          52 :         if (spdk_unlikely(status != 0)) {
    1406          10 :                 accel_update_stats(seq->ch, sequence_failed, 1);
    1407             :         }
    1408             : 
    1409             :         /* First notify all users that appended operations to this sequence */
    1410          52 :         accel_sequence_complete_tasks(seq);
    1411          52 :         accel_sequence_put(seq);
    1412             : 
    1413             :         /* Then notify the user that finished the sequence */
    1414          52 :         cb_fn(cb_arg, status);
    1415          52 : }
    1416             : 
    1417             : static void
    1418          28 : accel_update_virt_iov(struct iovec *diov, struct iovec *siov, struct accel_buffer *accel_buf)
    1419             : {
    1420             :         uintptr_t offset;
    1421             : 
    1422          28 :         offset = (uintptr_t)siov->iov_base & ACCEL_BUFFER_OFFSET_MASK;
    1423          28 :         assert(offset < accel_buf->len);
    1424             : 
    1425          28 :         diov->iov_base = (char *)accel_buf->buf + offset;
    1426          28 :         diov->iov_len = siov->iov_len;
    1427          28 : }
    1428             : 
    1429             : static void
    1430          10 : accel_sequence_set_virtbuf(struct spdk_accel_sequence *seq, struct accel_buffer *buf)
    1431             : {
    1432             :         struct spdk_accel_task *task;
    1433             :         struct iovec *iov;
    1434             : 
    1435             :         /* Now that we've allocated the actual data buffer for this accel_buffer, update all tasks
    1436             :          * in a sequence that were using it.
    1437             :          */
    1438          38 :         TAILQ_FOREACH(task, &seq->tasks, seq_link) {
    1439          28 :                 if (task->src_domain == g_accel_domain && task->src_domain_ctx == buf) {
    1440          11 :                         if (!task->has_aux) {
    1441          11 :                                 task->aux = SLIST_FIRST(&task->accel_ch->task_aux_data_pool);
    1442          11 :                                 assert(task->aux && "Can't allocate aux data structure");
    1443          11 :                                 task->has_aux = true;
    1444          11 :                                 SLIST_REMOVE_HEAD(&task->accel_ch->task_aux_data_pool, link);
    1445             :                         }
    1446             : 
    1447          11 :                         iov = &task->aux->iovs[SPDK_ACCEL_AXU_IOV_VIRT_SRC];
    1448          11 :                         assert(task->s.iovcnt == 1);
    1449          11 :                         accel_update_virt_iov(iov, &task->s.iovs[0], buf);
    1450          11 :                         task->src_domain = NULL;
    1451          11 :                         task->s.iovs = iov;
    1452             :                 }
    1453          28 :                 if (task->dst_domain == g_accel_domain && task->dst_domain_ctx == buf) {
    1454          17 :                         if (!task->has_aux) {
    1455           2 :                                 task->aux = SLIST_FIRST(&task->accel_ch->task_aux_data_pool);
    1456           2 :                                 assert(task->aux && "Can't allocate aux data structure");
    1457           2 :                                 task->has_aux = true;
    1458           2 :                                 SLIST_REMOVE_HEAD(&task->accel_ch->task_aux_data_pool, link);
    1459             :                         }
    1460             : 
    1461          17 :                         iov = &task->aux->iovs[SPDK_ACCEL_AXU_IOV_VIRT_DST];
    1462          17 :                         assert(task->d.iovcnt == 1);
    1463          17 :                         accel_update_virt_iov(iov, &task->d.iovs[0], buf);
    1464          17 :                         task->dst_domain = NULL;
    1465          17 :                         task->d.iovs = iov;
    1466             :                 }
    1467             :         }
    1468          10 : }
    1469             : 
    1470             : static void accel_process_sequence(struct spdk_accel_sequence *seq);
    1471             : 
    1472             : static void
    1473           3 : accel_iobuf_get_virtbuf_cb(struct spdk_iobuf_entry *entry, void *buf)
    1474             : {
    1475             :         struct accel_buffer *accel_buf;
    1476             : 
    1477           3 :         accel_buf = SPDK_CONTAINEROF(entry, struct accel_buffer, iobuf);
    1478             : 
    1479           3 :         assert(accel_buf->seq != NULL);
    1480           3 :         assert(accel_buf->buf == NULL);
    1481           3 :         accel_buf->buf = buf;
    1482             : 
    1483           3 :         assert(accel_buf->seq->state == ACCEL_SEQUENCE_STATE_AWAIT_VIRTBUF);
    1484           3 :         accel_sequence_set_state(accel_buf->seq, ACCEL_SEQUENCE_STATE_CHECK_VIRTBUF);
    1485           3 :         accel_sequence_set_virtbuf(accel_buf->seq, accel_buf);
    1486           3 :         accel_process_sequence(accel_buf->seq);
    1487           3 : }
    1488             : 
    1489             : static bool
    1490          29 : accel_sequence_alloc_buf(struct spdk_accel_sequence *seq, struct accel_buffer *buf,
    1491             :                          spdk_iobuf_get_cb cb_fn)
    1492             : {
    1493          29 :         struct accel_io_channel *ch = seq->ch;
    1494             : 
    1495          29 :         assert(buf->seq == NULL);
    1496             : 
    1497          29 :         buf->seq = seq;
    1498             : 
    1499             :         /* Buffer might be already allocated by memory domain translation. */
    1500          29 :         if (buf->buf) {
    1501           0 :                 return true;
    1502             :         }
    1503             : 
    1504          29 :         buf->buf = spdk_iobuf_get(&ch->iobuf, buf->len, &buf->iobuf, cb_fn);
    1505          29 :         if (spdk_unlikely(buf->buf == NULL)) {
    1506           5 :                 accel_update_stats(ch, retry.iobuf, 1);
    1507           5 :                 return false;
    1508             :         }
    1509             : 
    1510          24 :         return true;
    1511             : }
    1512             : 
    1513             : static bool
    1514          89 : accel_sequence_check_virtbuf(struct spdk_accel_sequence *seq, struct spdk_accel_task *task)
    1515             : {
    1516             :         /* If a task doesn't have dst/src (e.g. fill, crc32), its dst/src domain should be set to
    1517             :          * NULL */
    1518          89 :         if (task->src_domain == g_accel_domain) {
    1519           0 :                 if (!accel_sequence_alloc_buf(seq, task->src_domain_ctx,
    1520             :                                               accel_iobuf_get_virtbuf_cb)) {
    1521           0 :                         return false;
    1522             :                 }
    1523             : 
    1524           0 :                 accel_sequence_set_virtbuf(seq, task->src_domain_ctx);
    1525             :         }
    1526             : 
    1527          89 :         if (task->dst_domain == g_accel_domain) {
    1528          10 :                 if (!accel_sequence_alloc_buf(seq, task->dst_domain_ctx,
    1529             :                                               accel_iobuf_get_virtbuf_cb)) {
    1530           3 :                         return false;
    1531             :                 }
    1532             : 
    1533           7 :                 accel_sequence_set_virtbuf(seq, task->dst_domain_ctx);
    1534             :         }
    1535             : 
    1536          86 :         return true;
    1537             : }
    1538             : 
    1539             : static void
    1540           0 : accel_sequence_get_buf_cb(struct spdk_iobuf_entry *entry, void *buf)
    1541             : {
    1542             :         struct accel_buffer *accel_buf;
    1543             : 
    1544           0 :         accel_buf = SPDK_CONTAINEROF(entry, struct accel_buffer, iobuf);
    1545             : 
    1546           0 :         assert(accel_buf->seq != NULL);
    1547           0 :         assert(accel_buf->buf == NULL);
    1548           0 :         accel_buf->buf = buf;
    1549             : 
    1550           0 :         accel_sequence_set_virtbuf(accel_buf->seq, accel_buf);
    1551           0 :         accel_buf->cb_fn(accel_buf->seq, accel_buf->cb_ctx);
    1552           0 : }
    1553             : 
    1554             : bool
    1555           0 : spdk_accel_alloc_sequence_buf(struct spdk_accel_sequence *seq, void *buf,
    1556             :                               struct spdk_memory_domain *domain, void *domain_ctx,
    1557             :                               spdk_accel_sequence_get_buf_cb cb_fn, void *cb_ctx)
    1558             : {
    1559           0 :         struct accel_buffer *accel_buf = domain_ctx;
    1560             : 
    1561           0 :         assert(domain == g_accel_domain);
    1562           0 :         accel_buf->cb_fn = cb_fn;
    1563           0 :         accel_buf->cb_ctx = cb_ctx;
    1564             : 
    1565           0 :         if (!accel_sequence_alloc_buf(seq, accel_buf, accel_sequence_get_buf_cb)) {
    1566           0 :                 return false;
    1567             :         }
    1568             : 
    1569           0 :         accel_sequence_set_virtbuf(seq, accel_buf);
    1570             : 
    1571           0 :         return true;
    1572             : }
    1573             : 
    1574             : struct spdk_accel_task *
    1575          24 : spdk_accel_sequence_first_task(struct spdk_accel_sequence *seq)
    1576             : {
    1577          24 :         return TAILQ_FIRST(&seq->tasks);
    1578             : }
    1579             : 
    1580             : struct spdk_accel_task *
    1581           0 : spdk_accel_sequence_next_task(struct spdk_accel_task *task)
    1582             : {
    1583           0 :         return TAILQ_NEXT(task, seq_link);
    1584             : }
    1585             : 
    1586             : static inline void
    1587          19 : accel_set_bounce_buffer(struct spdk_accel_bounce_buffer *bounce, struct iovec **iovs,
    1588             :                         uint32_t *iovcnt, struct spdk_memory_domain **domain, void **domain_ctx,
    1589             :                         struct accel_buffer *buf)
    1590             : {
    1591          19 :         bounce->orig_iovs = *iovs;
    1592          19 :         bounce->orig_iovcnt = *iovcnt;
    1593          19 :         bounce->orig_domain = *domain;
    1594          19 :         bounce->orig_domain_ctx = *domain_ctx;
    1595          19 :         bounce->iov.iov_base = buf->buf;
    1596          19 :         bounce->iov.iov_len = buf->len;
    1597             : 
    1598          19 :         *iovs = &bounce->iov;
    1599          19 :         *iovcnt = 1;
    1600          19 :         *domain = NULL;
    1601          19 : }
    1602             : 
    1603             : static void
    1604           1 : accel_iobuf_get_src_bounce_cb(struct spdk_iobuf_entry *entry, void *buf)
    1605             : {
    1606             :         struct spdk_accel_task *task;
    1607             :         struct accel_buffer *accel_buf;
    1608             : 
    1609           1 :         accel_buf = SPDK_CONTAINEROF(entry, struct accel_buffer, iobuf);
    1610           1 :         assert(accel_buf->buf == NULL);
    1611           1 :         accel_buf->buf = buf;
    1612             : 
    1613           1 :         task = TAILQ_FIRST(&accel_buf->seq->tasks);
    1614           1 :         assert(task != NULL);
    1615             : 
    1616           1 :         assert(accel_buf->seq->state == ACCEL_SEQUENCE_STATE_AWAIT_BOUNCEBUF);
    1617           1 :         accel_sequence_set_state(accel_buf->seq, ACCEL_SEQUENCE_STATE_CHECK_BOUNCEBUF);
    1618           1 :         assert(task->aux);
    1619           1 :         assert(task->has_aux);
    1620           1 :         accel_set_bounce_buffer(&task->aux->bounce.s, &task->s.iovs, &task->s.iovcnt, &task->src_domain,
    1621             :                                 &task->src_domain_ctx, accel_buf);
    1622           1 :         accel_process_sequence(accel_buf->seq);
    1623           1 : }
    1624             : 
    1625             : static void
    1626           1 : accel_iobuf_get_dst_bounce_cb(struct spdk_iobuf_entry *entry, void *buf)
    1627             : {
    1628             :         struct spdk_accel_task *task;
    1629             :         struct accel_buffer *accel_buf;
    1630             : 
    1631           1 :         accel_buf = SPDK_CONTAINEROF(entry, struct accel_buffer, iobuf);
    1632           1 :         assert(accel_buf->buf == NULL);
    1633           1 :         accel_buf->buf = buf;
    1634             : 
    1635           1 :         task = TAILQ_FIRST(&accel_buf->seq->tasks);
    1636           1 :         assert(task != NULL);
    1637             : 
    1638           1 :         assert(accel_buf->seq->state == ACCEL_SEQUENCE_STATE_AWAIT_BOUNCEBUF);
    1639           1 :         accel_sequence_set_state(accel_buf->seq, ACCEL_SEQUENCE_STATE_CHECK_BOUNCEBUF);
    1640           1 :         assert(task->aux);
    1641           1 :         assert(task->has_aux);
    1642           1 :         accel_set_bounce_buffer(&task->aux->bounce.d, &task->d.iovs, &task->d.iovcnt, &task->dst_domain,
    1643             :                                 &task->dst_domain_ctx, accel_buf);
    1644           1 :         accel_process_sequence(accel_buf->seq);
    1645           1 : }
    1646             : 
    1647             : static int
    1648          73 : accel_sequence_check_bouncebuf(struct spdk_accel_sequence *seq, struct spdk_accel_task *task)
    1649             : {
    1650             :         struct accel_buffer *buf;
    1651             : 
    1652          73 :         if (task->src_domain != NULL) {
    1653             :                 /* By the time we're here, accel buffers should have been allocated */
    1654           9 :                 assert(task->src_domain != g_accel_domain);
    1655             : 
    1656           9 :                 if (!task->has_aux) {
    1657           8 :                         task->aux = SLIST_FIRST(&task->accel_ch->task_aux_data_pool);
    1658           8 :                         if (spdk_unlikely(!task->aux)) {
    1659           0 :                                 SPDK_ERRLOG("Can't allocate aux data structure\n");
    1660           0 :                                 assert(0);
    1661             :                                 return -EAGAIN;
    1662             :                         }
    1663           8 :                         task->has_aux = true;
    1664           8 :                         SLIST_REMOVE_HEAD(&task->accel_ch->task_aux_data_pool, link);
    1665             :                 }
    1666           9 :                 buf = accel_get_buf(seq->ch, accel_get_iovlen(task->s.iovs, task->s.iovcnt));
    1667           9 :                 if (buf == NULL) {
    1668           0 :                         SPDK_ERRLOG("Couldn't allocate buffer descriptor\n");
    1669           0 :                         return -ENOMEM;
    1670             :                 }
    1671             : 
    1672           9 :                 SLIST_INSERT_HEAD(&seq->bounce_bufs, buf, link);
    1673           9 :                 if (!accel_sequence_alloc_buf(seq, buf, accel_iobuf_get_src_bounce_cb)) {
    1674           1 :                         return -EAGAIN;
    1675             :                 }
    1676             : 
    1677           8 :                 accel_set_bounce_buffer(&task->aux->bounce.s, &task->s.iovs, &task->s.iovcnt,
    1678             :                                         &task->src_domain, &task->src_domain_ctx, buf);
    1679             :         }
    1680             : 
    1681          72 :         if (task->dst_domain != NULL) {
    1682             :                 /* By the time we're here, accel buffers should have been allocated */
    1683          10 :                 assert(task->dst_domain != g_accel_domain);
    1684             : 
    1685          10 :                 if (!task->has_aux) {
    1686           0 :                         task->aux = SLIST_FIRST(&task->accel_ch->task_aux_data_pool);
    1687           0 :                         if (spdk_unlikely(!task->aux)) {
    1688           0 :                                 SPDK_ERRLOG("Can't allocate aux data structure\n");
    1689           0 :                                 assert(0);
    1690             :                                 return -EAGAIN;
    1691             :                         }
    1692           0 :                         task->has_aux = true;
    1693           0 :                         SLIST_REMOVE_HEAD(&task->accel_ch->task_aux_data_pool, link);
    1694             :                 }
    1695          10 :                 buf = accel_get_buf(seq->ch, accel_get_iovlen(task->d.iovs, task->d.iovcnt));
    1696          10 :                 if (buf == NULL) {
    1697             :                         /* The src buffer will be released when a sequence is completed */
    1698           0 :                         SPDK_ERRLOG("Couldn't allocate buffer descriptor\n");
    1699           0 :                         return -ENOMEM;
    1700             :                 }
    1701             : 
    1702          10 :                 SLIST_INSERT_HEAD(&seq->bounce_bufs, buf, link);
    1703          10 :                 if (!accel_sequence_alloc_buf(seq, buf, accel_iobuf_get_dst_bounce_cb)) {
    1704           1 :                         return -EAGAIN;
    1705             :                 }
    1706             : 
    1707           9 :                 accel_set_bounce_buffer(&task->aux->bounce.d, &task->d.iovs, &task->d.iovcnt,
    1708             :                                         &task->dst_domain, &task->dst_domain_ctx, buf);
    1709             :         }
    1710             : 
    1711          71 :         return 0;
    1712             : }
    1713             : 
    1714             : static void
    1715           8 : accel_task_pull_data_cb(void *ctx, int status)
    1716             : {
    1717           8 :         struct spdk_accel_sequence *seq = ctx;
    1718             : 
    1719           8 :         assert(seq->state == ACCEL_SEQUENCE_STATE_AWAIT_PULL_DATA);
    1720           8 :         if (spdk_likely(status == 0)) {
    1721           7 :                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_EXEC_TASK);
    1722             :         } else {
    1723           1 :                 accel_sequence_set_fail(seq, status);
    1724             :         }
    1725             : 
    1726           8 :         accel_process_sequence(seq);
    1727           8 : }
    1728             : 
    1729             : static void
    1730           9 : accel_task_pull_data(struct spdk_accel_sequence *seq, struct spdk_accel_task *task)
    1731             : {
    1732             :         int rc;
    1733             : 
    1734           9 :         assert(task->has_aux);
    1735           9 :         assert(task->aux);
    1736           9 :         assert(task->aux->bounce.s.orig_iovs != NULL);
    1737           9 :         assert(task->aux->bounce.s.orig_domain != NULL);
    1738           9 :         assert(task->aux->bounce.s.orig_domain != g_accel_domain);
    1739           9 :         assert(!g_modules_opc[task->op_code].supports_memory_domains);
    1740             : 
    1741           9 :         rc = spdk_memory_domain_pull_data(task->aux->bounce.s.orig_domain,
    1742           9 :                                           task->aux->bounce.s.orig_domain_ctx,
    1743           9 :                                           task->aux->bounce.s.orig_iovs, task->aux->bounce.s.orig_iovcnt,
    1744             :                                           task->s.iovs, task->s.iovcnt,
    1745             :                                           accel_task_pull_data_cb, seq);
    1746           9 :         if (spdk_unlikely(rc != 0)) {
    1747           1 :                 SPDK_ERRLOG("Failed to pull data from memory domain: %s, rc: %d\n",
    1748             :                             spdk_memory_domain_get_dma_device_id(task->aux->bounce.s.orig_domain), rc);
    1749           1 :                 accel_sequence_set_fail(seq, rc);
    1750             :         }
    1751           9 : }
    1752             : 
    1753             : static void
    1754           7 : accel_task_push_data_cb(void *ctx, int status)
    1755             : {
    1756           7 :         struct spdk_accel_sequence *seq = ctx;
    1757             : 
    1758           7 :         assert(seq->state == ACCEL_SEQUENCE_STATE_AWAIT_PUSH_DATA);
    1759           7 :         if (spdk_likely(status == 0)) {
    1760           6 :                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_NEXT_TASK);
    1761             :         } else {
    1762           1 :                 accel_sequence_set_fail(seq, status);
    1763             :         }
    1764             : 
    1765           7 :         accel_process_sequence(seq);
    1766           7 : }
    1767             : 
    1768             : static void
    1769           8 : accel_task_push_data(struct spdk_accel_sequence *seq, struct spdk_accel_task *task)
    1770             : {
    1771             :         int rc;
    1772             : 
    1773           8 :         assert(task->has_aux);
    1774           8 :         assert(task->aux);
    1775           8 :         assert(task->aux->bounce.d.orig_iovs != NULL);
    1776           8 :         assert(task->aux->bounce.d.orig_domain != NULL);
    1777           8 :         assert(task->aux->bounce.d.orig_domain != g_accel_domain);
    1778           8 :         assert(!g_modules_opc[task->op_code].supports_memory_domains);
    1779             : 
    1780           8 :         rc = spdk_memory_domain_push_data(task->aux->bounce.d.orig_domain,
    1781           8 :                                           task->aux->bounce.d.orig_domain_ctx,
    1782           8 :                                           task->aux->bounce.d.orig_iovs, task->aux->bounce.d.orig_iovcnt,
    1783             :                                           task->d.iovs, task->d.iovcnt,
    1784             :                                           accel_task_push_data_cb, seq);
    1785           8 :         if (spdk_unlikely(rc != 0)) {
    1786           1 :                 SPDK_ERRLOG("Failed to push data to memory domain: %s, rc: %d\n",
    1787             :                             spdk_memory_domain_get_dma_device_id(task->aux->bounce.s.orig_domain), rc);
    1788           1 :                 accel_sequence_set_fail(seq, rc);
    1789             :         }
    1790           8 : }
    1791             : 
    1792             : static void
    1793         166 : accel_process_sequence(struct spdk_accel_sequence *seq)
    1794             : {
    1795         166 :         struct accel_io_channel *accel_ch = seq->ch;
    1796             :         struct spdk_accel_task *task;
    1797             :         enum accel_sequence_state state;
    1798             :         int rc;
    1799             : 
    1800             :         /* Prevent recursive calls to this function */
    1801         166 :         if (spdk_unlikely(seq->in_process_sequence)) {
    1802          74 :                 return;
    1803             :         }
    1804          92 :         seq->in_process_sequence = true;
    1805             : 
    1806          92 :         task = TAILQ_FIRST(&seq->tasks);
    1807             :         do {
    1808         375 :                 state = seq->state;
    1809         375 :                 switch (state) {
    1810          91 :                 case ACCEL_SEQUENCE_STATE_INIT:
    1811          91 :                         if (g_accel_driver != NULL) {
    1812          13 :                                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_DRIVER_EXEC_TASKS);
    1813          13 :                                 break;
    1814             :                         }
    1815             :                 /* Fall through */
    1816             :                 case ACCEL_SEQUENCE_STATE_CHECK_VIRTBUF:
    1817          89 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_AWAIT_VIRTBUF);
    1818          89 :                         if (!accel_sequence_check_virtbuf(seq, task)) {
    1819             :                                 /* We couldn't allocate a buffer, wait until one is available */
    1820           3 :                                 break;
    1821             :                         }
    1822          86 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_CHECK_BOUNCEBUF);
    1823             :                 /* Fall through */
    1824          88 :                 case ACCEL_SEQUENCE_STATE_CHECK_BOUNCEBUF:
    1825             :                         /* If a module supports memory domains, we don't need to allocate bounce
    1826             :                          * buffers */
    1827          88 :                         if (g_modules_opc[task->op_code].supports_memory_domains) {
    1828          15 :                                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_EXEC_TASK);
    1829          15 :                                 break;
    1830             :                         }
    1831          73 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_AWAIT_BOUNCEBUF);
    1832          73 :                         rc = accel_sequence_check_bouncebuf(seq, task);
    1833          73 :                         if (spdk_unlikely(rc != 0)) {
    1834             :                                 /* We couldn't allocate a buffer, wait until one is available */
    1835           2 :                                 if (rc == -EAGAIN) {
    1836           2 :                                         break;
    1837             :                                 }
    1838           0 :                                 accel_sequence_set_fail(seq, rc);
    1839           0 :                                 break;
    1840             :                         }
    1841          71 :                         if (task->has_aux && task->s.iovs == &task->aux->bounce.s.iov) {
    1842           9 :                                 assert(task->aux->bounce.s.orig_iovs);
    1843           9 :                                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_PULL_DATA);
    1844           9 :                                 break;
    1845             :                         }
    1846          62 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_EXEC_TASK);
    1847             :                 /* Fall through */
    1848          84 :                 case ACCEL_SEQUENCE_STATE_EXEC_TASK:
    1849          84 :                         SPDK_DEBUGLOG(accel, "Executing %s operation, sequence: %p\n",
    1850             :                                       g_opcode_strings[task->op_code], seq);
    1851             : 
    1852          84 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_AWAIT_TASK);
    1853          84 :                         rc = accel_submit_task(accel_ch, task);
    1854          84 :                         if (spdk_unlikely(rc != 0)) {
    1855           2 :                                 SPDK_ERRLOG("Failed to submit %s operation, sequence: %p\n",
    1856             :                                             g_opcode_strings[task->op_code], seq);
    1857           2 :                                 accel_sequence_set_fail(seq, rc);
    1858             :                         }
    1859          84 :                         break;
    1860           9 :                 case ACCEL_SEQUENCE_STATE_PULL_DATA:
    1861           9 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_AWAIT_PULL_DATA);
    1862           9 :                         accel_task_pull_data(seq, task);
    1863           9 :                         break;
    1864          80 :                 case ACCEL_SEQUENCE_STATE_COMPLETE_TASK:
    1865          80 :                         if (task->has_aux && task->d.iovs == &task->aux->bounce.d.iov) {
    1866           8 :                                 assert(task->aux->bounce.d.orig_iovs);
    1867           8 :                                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_PUSH_DATA);
    1868           8 :                                 break;
    1869             :                         }
    1870          72 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_NEXT_TASK);
    1871          72 :                         break;
    1872           8 :                 case ACCEL_SEQUENCE_STATE_PUSH_DATA:
    1873           8 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_AWAIT_PUSH_DATA);
    1874           8 :                         accel_task_push_data(seq, task);
    1875           8 :                         break;
    1876          78 :                 case ACCEL_SEQUENCE_STATE_NEXT_TASK:
    1877          78 :                         accel_sequence_complete_task(seq, task);
    1878             :                         /* Check if there are any remaining tasks */
    1879          78 :                         task = TAILQ_FIRST(&seq->tasks);
    1880          78 :                         if (task == NULL) {
    1881             :                                 /* Immediately return here to make sure we don't touch the sequence
    1882             :                                  * after it's completed */
    1883          39 :                                 accel_sequence_complete(seq);
    1884          39 :                                 return;
    1885             :                         }
    1886          39 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_INIT);
    1887          39 :                         break;
    1888          13 :                 case ACCEL_SEQUENCE_STATE_DRIVER_EXEC_TASKS:
    1889          13 :                         assert(!TAILQ_EMPTY(&seq->tasks));
    1890             : 
    1891          13 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_DRIVER_AWAIT_TASKS);
    1892          13 :                         rc = g_accel_driver->execute_sequence(accel_ch->driver_channel, seq);
    1893          13 :                         if (spdk_unlikely(rc != 0)) {
    1894           1 :                                 SPDK_ERRLOG("Failed to execute sequence: %p using driver: %s\n",
    1895             :                                             seq, g_accel_driver->name);
    1896           1 :                                 accel_sequence_set_fail(seq, rc);
    1897             :                         }
    1898          13 :                         break;
    1899          11 :                 case ACCEL_SEQUENCE_STATE_DRIVER_COMPLETE_TASKS:
    1900             :                         /* Get the task again, as the driver might have completed some tasks
    1901             :                          * synchronously */
    1902          11 :                         task = TAILQ_FIRST(&seq->tasks);
    1903          11 :                         if (task == NULL) {
    1904             :                                 /* Immediately return here to make sure we don't touch the sequence
    1905             :                                  * after it's completed */
    1906           3 :                                 accel_sequence_complete(seq);
    1907           3 :                                 return;
    1908             :                         }
    1909             :                         /* We don't want to execute the next task through the driver, so we
    1910             :                          * explicitly omit the INIT state here */
    1911           8 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_CHECK_VIRTBUF);
    1912           8 :                         break;
    1913          10 :                 case ACCEL_SEQUENCE_STATE_ERROR:
    1914             :                         /* Immediately return here to make sure we don't touch the sequence
    1915             :                          * after it's completed */
    1916          10 :                         assert(seq->status != 0);
    1917          10 :                         accel_sequence_complete(seq);
    1918          10 :                         return;
    1919          40 :                 case ACCEL_SEQUENCE_STATE_AWAIT_VIRTBUF:
    1920             :                 case ACCEL_SEQUENCE_STATE_AWAIT_BOUNCEBUF:
    1921             :                 case ACCEL_SEQUENCE_STATE_AWAIT_PULL_DATA:
    1922             :                 case ACCEL_SEQUENCE_STATE_AWAIT_TASK:
    1923             :                 case ACCEL_SEQUENCE_STATE_AWAIT_PUSH_DATA:
    1924             :                 case ACCEL_SEQUENCE_STATE_DRIVER_AWAIT_TASKS:
    1925          40 :                         break;
    1926           0 :                 default:
    1927           0 :                         assert(0 && "bad state");
    1928             :                         break;
    1929             :                 }
    1930         323 :         } while (seq->state != state);
    1931             : 
    1932          40 :         seq->in_process_sequence = false;
    1933             : }
    1934             : 
    1935             : static void
    1936          94 : accel_sequence_task_cb(void *cb_arg, int status)
    1937             : {
    1938          94 :         struct spdk_accel_sequence *seq = cb_arg;
    1939          94 :         struct spdk_accel_task *task = TAILQ_FIRST(&seq->tasks);
    1940             : 
    1941          94 :         switch (seq->state) {
    1942          82 :         case ACCEL_SEQUENCE_STATE_AWAIT_TASK:
    1943          82 :                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_COMPLETE_TASK);
    1944          82 :                 if (spdk_unlikely(status != 0)) {
    1945           2 :                         SPDK_ERRLOG("Failed to execute %s operation, sequence: %p\n",
    1946             :                                     g_opcode_strings[task->op_code], seq);
    1947           2 :                         accel_sequence_set_fail(seq, status);
    1948             :                 }
    1949             : 
    1950          82 :                 accel_process_sequence(seq);
    1951          82 :                 break;
    1952          12 :         case ACCEL_SEQUENCE_STATE_DRIVER_AWAIT_TASKS:
    1953          12 :                 assert(g_accel_driver != NULL);
    1954             :                 /* Immediately remove the task from the outstanding list to make sure the next call
    1955             :                  * to spdk_accel_sequence_first_task() doesn't return it */
    1956          12 :                 accel_sequence_complete_task(seq, task);
    1957          12 :                 if (spdk_unlikely(status != 0)) {
    1958           1 :                         SPDK_ERRLOG("Failed to execute %s operation, sequence: %p through "
    1959             :                                     "driver: %s\n", g_opcode_strings[task->op_code], seq,
    1960             :                                     g_accel_driver->name);
    1961             :                         /* Update status without using accel_sequence_set_fail() to avoid changing
    1962             :                          * seq's state to ERROR until driver calls spdk_accel_sequence_continue() */
    1963           1 :                         seq->status = status;
    1964             :                 }
    1965          12 :                 break;
    1966           0 :         default:
    1967           0 :                 assert(0 && "bad state");
    1968             :                 break;
    1969             :         }
    1970          94 : }
    1971             : 
    1972             : void
    1973          12 : spdk_accel_sequence_continue(struct spdk_accel_sequence *seq)
    1974             : {
    1975          12 :         assert(g_accel_driver != NULL);
    1976          12 :         assert(seq->state == ACCEL_SEQUENCE_STATE_DRIVER_AWAIT_TASKS);
    1977             : 
    1978          12 :         if (spdk_likely(seq->status == 0)) {
    1979          11 :                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_DRIVER_COMPLETE_TASKS);
    1980             :         } else {
    1981           1 :                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_ERROR);
    1982             :         }
    1983             : 
    1984          12 :         accel_process_sequence(seq);
    1985          12 : }
    1986             : 
    1987             : static bool
    1988          28 : accel_compare_iovs(struct iovec *iova, uint32_t iovacnt, struct iovec *iovb, uint32_t iovbcnt)
    1989             : {
    1990             :         /* For now, just do a dumb check that the iovecs arrays are exactly the same */
    1991          28 :         if (iovacnt != iovbcnt) {
    1992           0 :                 return false;
    1993             :         }
    1994             : 
    1995          28 :         return memcmp(iova, iovb, sizeof(*iova) * iovacnt) == 0;
    1996             : }
    1997             : 
    1998             : static bool
    1999          22 : accel_task_set_dstbuf(struct spdk_accel_task *task, struct spdk_accel_task *next)
    2000             : {
    2001             :         struct spdk_accel_task *prev;
    2002             : 
    2003          22 :         switch (task->op_code) {
    2004          18 :         case SPDK_ACCEL_OPC_DECOMPRESS:
    2005             :         case SPDK_ACCEL_OPC_FILL:
    2006             :         case SPDK_ACCEL_OPC_ENCRYPT:
    2007             :         case SPDK_ACCEL_OPC_DECRYPT:
    2008          18 :                 if (task->dst_domain != next->src_domain) {
    2009           0 :                         return false;
    2010             :                 }
    2011          18 :                 if (!accel_compare_iovs(task->d.iovs, task->d.iovcnt,
    2012             :                                         next->s.iovs, next->s.iovcnt)) {
    2013           1 :                         return false;
    2014             :                 }
    2015          17 :                 task->d.iovs = next->d.iovs;
    2016          17 :                 task->d.iovcnt = next->d.iovcnt;
    2017          17 :                 task->dst_domain = next->dst_domain;
    2018          17 :                 task->dst_domain_ctx = next->dst_domain_ctx;
    2019          17 :                 break;
    2020           4 :         case SPDK_ACCEL_OPC_CRC32C:
    2021             :                 /* crc32 is special, because it doesn't have a dst buffer */
    2022           4 :                 if (task->src_domain != next->src_domain) {
    2023           0 :                         return false;
    2024             :                 }
    2025           4 :                 if (!accel_compare_iovs(task->s.iovs, task->s.iovcnt,
    2026             :                                         next->s.iovs, next->s.iovcnt)) {
    2027           1 :                         return false;
    2028             :                 }
    2029             :                 /* We can only change crc32's buffer if we can change previous task's buffer */
    2030           3 :                 prev = TAILQ_PREV(task, accel_sequence_tasks, seq_link);
    2031           3 :                 if (prev == NULL) {
    2032           1 :                         return false;
    2033             :                 }
    2034           2 :                 if (!accel_task_set_dstbuf(prev, next)) {
    2035           0 :                         return false;
    2036             :                 }
    2037           2 :                 task->s.iovs = next->d.iovs;
    2038           2 :                 task->s.iovcnt = next->d.iovcnt;
    2039           2 :                 task->src_domain = next->dst_domain;
    2040           2 :                 task->src_domain_ctx = next->dst_domain_ctx;
    2041           2 :                 break;
    2042           0 :         default:
    2043           0 :                 return false;
    2044             :         }
    2045             : 
    2046          19 :         return true;
    2047             : }
    2048             : 
    2049             : static void
    2050          72 : accel_sequence_merge_tasks(struct spdk_accel_sequence *seq, struct spdk_accel_task *task,
    2051             :                            struct spdk_accel_task **next_task)
    2052             : {
    2053          72 :         struct spdk_accel_task *next = *next_task;
    2054             : 
    2055          72 :         switch (task->op_code) {
    2056           8 :         case SPDK_ACCEL_OPC_COPY:
    2057             :                 /* We only allow changing src of operations that actually have a src, e.g. we never
    2058             :                  * do it for fill.  Theoretically, it is possible, but we'd have to be careful to
    2059             :                  * change the src of the operation after fill (which in turn could also be a fill).
    2060             :                  * So, for the sake of simplicity, skip this type of operations for now.
    2061             :                  */
    2062           8 :                 if (next->op_code != SPDK_ACCEL_OPC_DECOMPRESS &&
    2063           6 :                     next->op_code != SPDK_ACCEL_OPC_COPY &&
    2064           5 :                     next->op_code != SPDK_ACCEL_OPC_ENCRYPT &&
    2065           4 :                     next->op_code != SPDK_ACCEL_OPC_DECRYPT &&
    2066           2 :                     next->op_code != SPDK_ACCEL_OPC_COPY_CRC32C) {
    2067           2 :                         break;
    2068             :                 }
    2069           6 :                 if (task->dst_domain != next->src_domain) {
    2070           0 :                         break;
    2071             :                 }
    2072           6 :                 if (!accel_compare_iovs(task->d.iovs, task->d.iovcnt,
    2073             :                                         next->s.iovs, next->s.iovcnt)) {
    2074           0 :                         break;
    2075             :                 }
    2076           6 :                 next->s.iovs = task->s.iovs;
    2077           6 :                 next->s.iovcnt = task->s.iovcnt;
    2078           6 :                 next->src_domain = task->src_domain;
    2079           6 :                 next->src_domain_ctx = task->src_domain_ctx;
    2080           6 :                 accel_sequence_complete_task(seq, task);
    2081           6 :                 break;
    2082          64 :         case SPDK_ACCEL_OPC_DECOMPRESS:
    2083             :         case SPDK_ACCEL_OPC_FILL:
    2084             :         case SPDK_ACCEL_OPC_ENCRYPT:
    2085             :         case SPDK_ACCEL_OPC_DECRYPT:
    2086             :         case SPDK_ACCEL_OPC_CRC32C:
    2087             :                 /* We can only merge tasks when one of them is a copy */
    2088          64 :                 if (next->op_code != SPDK_ACCEL_OPC_COPY) {
    2089          44 :                         break;
    2090             :                 }
    2091          20 :                 if (!accel_task_set_dstbuf(task, next)) {
    2092           3 :                         break;
    2093             :                 }
    2094             :                 /* We're removing next_task from the tasks queue, so we need to update its pointer,
    2095             :                  * so that the TAILQ_FOREACH_SAFE() loop below works correctly */
    2096          17 :                 *next_task = TAILQ_NEXT(next, seq_link);
    2097          17 :                 accel_sequence_complete_task(seq, next);
    2098          17 :                 break;
    2099           0 :         default:
    2100           0 :                 assert(0 && "bad opcode");
    2101             :                 break;
    2102             :         }
    2103          72 : }
    2104             : 
    2105             : void
    2106          52 : spdk_accel_sequence_finish(struct spdk_accel_sequence *seq,
    2107             :                            spdk_accel_completion_cb cb_fn, void *cb_arg)
    2108             : {
    2109          52 :         struct spdk_accel_task *task, *next;
    2110             : 
    2111             :         /* Try to remove any copy operations if possible */
    2112         124 :         TAILQ_FOREACH_SAFE(task, &seq->tasks, seq_link, next) {
    2113         109 :                 if (next == NULL) {
    2114          37 :                         break;
    2115             :                 }
    2116          72 :                 accel_sequence_merge_tasks(seq, task, &next);
    2117             :         }
    2118             : 
    2119          52 :         seq->cb_fn = cb_fn;
    2120          52 :         seq->cb_arg = cb_arg;
    2121             : 
    2122          52 :         accel_process_sequence(seq);
    2123          52 : }
    2124             : 
    2125             : void
    2126           0 : spdk_accel_sequence_reverse(struct spdk_accel_sequence *seq)
    2127             : {
    2128           0 :         struct accel_sequence_tasks tasks = TAILQ_HEAD_INITIALIZER(tasks);
    2129             :         struct spdk_accel_task *task;
    2130             : 
    2131           0 :         TAILQ_SWAP(&tasks, &seq->tasks, spdk_accel_task, seq_link);
    2132             : 
    2133           0 :         while (!TAILQ_EMPTY(&tasks)) {
    2134           0 :                 task = TAILQ_FIRST(&tasks);
    2135           0 :                 TAILQ_REMOVE(&tasks, task, seq_link);
    2136           0 :                 TAILQ_INSERT_HEAD(&seq->tasks, task, seq_link);
    2137             :         }
    2138           0 : }
    2139             : 
    2140             : void
    2141           3 : spdk_accel_sequence_abort(struct spdk_accel_sequence *seq)
    2142             : {
    2143           3 :         if (seq == NULL) {
    2144           1 :                 return;
    2145             :         }
    2146             : 
    2147           2 :         accel_sequence_complete_tasks(seq);
    2148           2 :         accel_sequence_put(seq);
    2149             : }
    2150             : 
    2151             : struct spdk_memory_domain *
    2152           0 : spdk_accel_get_memory_domain(void)
    2153             : {
    2154           0 :         return g_accel_domain;
    2155             : }
    2156             : 
    2157             : static struct spdk_accel_module_if *
    2158           7 : _module_find_by_name(const char *name)
    2159             : {
    2160           7 :         struct spdk_accel_module_if *accel_module = NULL;
    2161             : 
    2162          16 :         TAILQ_FOREACH(accel_module, &spdk_accel_module_list, tailq) {
    2163          10 :                 if (strcmp(name, accel_module->name) == 0) {
    2164           1 :                         break;
    2165             :                 }
    2166             :         }
    2167             : 
    2168           7 :         return accel_module;
    2169             : }
    2170             : 
    2171             : static inline struct spdk_accel_crypto_key *
    2172           0 : _accel_crypto_key_get(const char *name)
    2173             : {
    2174             :         struct spdk_accel_crypto_key *key;
    2175             : 
    2176           0 :         assert(spdk_spin_held(&g_keyring_spin));
    2177             : 
    2178           0 :         TAILQ_FOREACH(key, &g_keyring, link) {
    2179           0 :                 if (strcmp(name, key->param.key_name) == 0) {
    2180           0 :                         return key;
    2181             :                 }
    2182             :         }
    2183             : 
    2184           0 :         return NULL;
    2185             : }
    2186             : 
    2187             : static void
    2188           0 : accel_crypto_key_free_mem(struct spdk_accel_crypto_key *key)
    2189             : {
    2190           0 :         if (key->param.hex_key) {
    2191           0 :                 spdk_memset_s(key->param.hex_key, key->key_size * 2, 0, key->key_size * 2);
    2192           0 :                 free(key->param.hex_key);
    2193             :         }
    2194           0 :         if (key->param.hex_key2) {
    2195           0 :                 spdk_memset_s(key->param.hex_key2, key->key2_size * 2, 0, key->key2_size * 2);
    2196           0 :                 free(key->param.hex_key2);
    2197             :         }
    2198           0 :         free(key->param.tweak_mode);
    2199           0 :         free(key->param.key_name);
    2200           0 :         free(key->param.cipher);
    2201           0 :         if (key->key) {
    2202           0 :                 spdk_memset_s(key->key, key->key_size, 0, key->key_size);
    2203           0 :                 free(key->key);
    2204             :         }
    2205           0 :         if (key->key2) {
    2206           0 :                 spdk_memset_s(key->key2, key->key2_size, 0, key->key2_size);
    2207           0 :                 free(key->key2);
    2208             :         }
    2209           0 :         free(key);
    2210           0 : }
    2211             : 
    2212             : static void
    2213           0 : accel_crypto_key_destroy_unsafe(struct spdk_accel_crypto_key *key)
    2214             : {
    2215           0 :         assert(key->module_if);
    2216           0 :         assert(key->module_if->crypto_key_deinit);
    2217             : 
    2218           0 :         key->module_if->crypto_key_deinit(key);
    2219           0 :         accel_crypto_key_free_mem(key);
    2220           0 : }
    2221             : 
    2222             : /*
    2223             :  * This function mitigates a timing side channel which could be caused by using strcmp()
    2224             :  * Please refer to chapter "Mitigating Information Leakage Based on Variable Timing" in
    2225             :  * the article [1] for more details
    2226             :  * [1] https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/secure-coding/mitigate-timing-side-channel-crypto-implementation.html
    2227             :  */
    2228             : static bool
    2229           0 : accel_aes_xts_keys_equal(const char *k1, size_t k1_len, const char *k2, size_t k2_len)
    2230             : {
    2231             :         size_t i;
    2232           0 :         volatile size_t x = k1_len ^ k2_len;
    2233             : 
    2234           0 :         for (i = 0; ((i < k1_len) & (i < k2_len)); i++) {
    2235           0 :                 x |= k1[i] ^ k2[i];
    2236             :         }
    2237             : 
    2238           0 :         return x == 0;
    2239             : }
    2240             : 
    2241             : static const char *g_tweak_modes[] = {
    2242             :         [SPDK_ACCEL_CRYPTO_TWEAK_MODE_SIMPLE_LBA] = "SIMPLE_LBA",
    2243             :         [SPDK_ACCEL_CRYPTO_TWEAK_MODE_JOIN_NEG_LBA_WITH_LBA] = "JOIN_NEG_LBA_WITH_LBA",
    2244             :         [SPDK_ACCEL_CRYPTO_TWEAK_MODE_INCR_512_FULL_LBA] = "INCR_512_FULL_LBA",
    2245             :         [SPDK_ACCEL_CRYPTO_TWEAK_MODE_INCR_512_UPPER_LBA] = "INCR_512_UPPER_LBA",
    2246             : };
    2247             : 
    2248             : static const char *g_ciphers[] = {
    2249             :         [SPDK_ACCEL_CIPHER_AES_CBC] = "AES_CBC",
    2250             :         [SPDK_ACCEL_CIPHER_AES_XTS] = "AES_XTS",
    2251             : };
    2252             : 
    2253             : int
    2254           0 : spdk_accel_crypto_key_create(const struct spdk_accel_crypto_key_create_param *param)
    2255             : {
    2256             :         struct spdk_accel_module_if *module;
    2257             :         struct spdk_accel_crypto_key *key;
    2258             :         size_t hex_key_size, hex_key2_size;
    2259           0 :         bool found = false;
    2260             :         size_t i;
    2261             :         int rc;
    2262             : 
    2263           0 :         if (!param || !param->hex_key || !param->cipher || !param->key_name) {
    2264           0 :                 return -EINVAL;
    2265             :         }
    2266             : 
    2267           0 :         if (g_modules_opc[SPDK_ACCEL_OPC_ENCRYPT].module != g_modules_opc[SPDK_ACCEL_OPC_DECRYPT].module) {
    2268             :                 /* hardly ever possible, but let's check and warn the user */
    2269           0 :                 SPDK_ERRLOG("Different accel modules are used for encryption and decryption\n");
    2270             :         }
    2271           0 :         module = g_modules_opc[SPDK_ACCEL_OPC_ENCRYPT].module;
    2272             : 
    2273           0 :         if (!module) {
    2274           0 :                 SPDK_ERRLOG("No accel module found assigned for crypto operation\n");
    2275           0 :                 return -ENOENT;
    2276             :         }
    2277             : 
    2278           0 :         if (!module->crypto_key_init || !module->crypto_supports_cipher) {
    2279           0 :                 SPDK_ERRLOG("Module %s doesn't support crypto operations\n", module->name);
    2280           0 :                 return -ENOTSUP;
    2281             :         }
    2282             : 
    2283           0 :         key = calloc(1, sizeof(*key));
    2284           0 :         if (!key) {
    2285           0 :                 return -ENOMEM;
    2286             :         }
    2287             : 
    2288           0 :         key->param.key_name = strdup(param->key_name);
    2289           0 :         if (!key->param.key_name) {
    2290           0 :                 rc = -ENOMEM;
    2291           0 :                 goto error;
    2292             :         }
    2293             : 
    2294           0 :         for (i = 0; i < SPDK_COUNTOF(g_ciphers); ++i) {
    2295           0 :                 assert(g_ciphers[i]);
    2296             : 
    2297           0 :                 if (strncmp(param->cipher, g_ciphers[i], strlen(g_ciphers[i])) == 0) {
    2298           0 :                         key->cipher = i;
    2299           0 :                         found = true;
    2300           0 :                         break;
    2301             :                 }
    2302             :         }
    2303             : 
    2304           0 :         if (!found) {
    2305           0 :                 SPDK_ERRLOG("Failed to parse cipher\n");
    2306           0 :                 rc = -EINVAL;
    2307           0 :                 goto error;
    2308             :         }
    2309             : 
    2310           0 :         key->param.cipher = strdup(param->cipher);
    2311           0 :         if (!key->param.cipher) {
    2312           0 :                 rc = -ENOMEM;
    2313           0 :                 goto error;
    2314             :         }
    2315             : 
    2316           0 :         hex_key_size = strnlen(param->hex_key, SPDK_ACCEL_CRYPTO_KEY_MAX_HEX_LENGTH);
    2317           0 :         if (hex_key_size == SPDK_ACCEL_CRYPTO_KEY_MAX_HEX_LENGTH) {
    2318           0 :                 SPDK_ERRLOG("key1 size exceeds max %d\n", SPDK_ACCEL_CRYPTO_KEY_MAX_HEX_LENGTH);
    2319           0 :                 rc = -EINVAL;
    2320           0 :                 goto error;
    2321             :         }
    2322             : 
    2323           0 :         if (hex_key_size == 0) {
    2324           0 :                 SPDK_ERRLOG("key1 size cannot be 0\n");
    2325           0 :                 rc = -EINVAL;
    2326           0 :                 goto error;
    2327             :         }
    2328             : 
    2329           0 :         key->param.hex_key = strdup(param->hex_key);
    2330           0 :         if (!key->param.hex_key) {
    2331           0 :                 rc = -ENOMEM;
    2332           0 :                 goto error;
    2333             :         }
    2334             : 
    2335           0 :         key->key_size = hex_key_size / 2;
    2336           0 :         key->key = spdk_unhexlify(key->param.hex_key);
    2337           0 :         if (!key->key) {
    2338           0 :                 SPDK_ERRLOG("Failed to unhexlify key1\n");
    2339           0 :                 rc = -EINVAL;
    2340           0 :                 goto error;
    2341             :         }
    2342             : 
    2343           0 :         if (param->hex_key2) {
    2344           0 :                 hex_key2_size = strnlen(param->hex_key2, SPDK_ACCEL_CRYPTO_KEY_MAX_HEX_LENGTH);
    2345           0 :                 if (hex_key2_size == SPDK_ACCEL_CRYPTO_KEY_MAX_HEX_LENGTH) {
    2346           0 :                         SPDK_ERRLOG("key2 size exceeds max %d\n", SPDK_ACCEL_CRYPTO_KEY_MAX_HEX_LENGTH);
    2347           0 :                         rc = -EINVAL;
    2348           0 :                         goto error;
    2349             :                 }
    2350             : 
    2351           0 :                 if (hex_key2_size == 0) {
    2352           0 :                         SPDK_ERRLOG("key2 size cannot be 0\n");
    2353           0 :                         rc = -EINVAL;
    2354           0 :                         goto error;
    2355             :                 }
    2356             : 
    2357           0 :                 key->param.hex_key2 = strdup(param->hex_key2);
    2358           0 :                 if (!key->param.hex_key2) {
    2359           0 :                         rc = -ENOMEM;
    2360           0 :                         goto error;
    2361             :                 }
    2362             : 
    2363           0 :                 key->key2_size = hex_key2_size / 2;
    2364           0 :                 key->key2 = spdk_unhexlify(key->param.hex_key2);
    2365           0 :                 if (!key->key2) {
    2366           0 :                         SPDK_ERRLOG("Failed to unhexlify key2\n");
    2367           0 :                         rc = -EINVAL;
    2368           0 :                         goto error;
    2369             :                 }
    2370             :         }
    2371             : 
    2372           0 :         key->tweak_mode = ACCEL_CRYPTO_TWEAK_MODE_DEFAULT;
    2373           0 :         if (param->tweak_mode) {
    2374           0 :                 found = false;
    2375             : 
    2376           0 :                 key->param.tweak_mode = strdup(param->tweak_mode);
    2377           0 :                 if (!key->param.tweak_mode) {
    2378           0 :                         rc = -ENOMEM;
    2379           0 :                         goto error;
    2380             :                 }
    2381             : 
    2382           0 :                 for (i = 0; i < SPDK_COUNTOF(g_tweak_modes); ++i) {
    2383           0 :                         assert(g_tweak_modes[i]);
    2384             : 
    2385           0 :                         if (strncmp(param->tweak_mode, g_tweak_modes[i], strlen(g_tweak_modes[i])) == 0) {
    2386           0 :                                 key->tweak_mode = i;
    2387           0 :                                 found = true;
    2388           0 :                                 break;
    2389             :                         }
    2390             :                 }
    2391             : 
    2392           0 :                 if (!found) {
    2393           0 :                         SPDK_ERRLOG("Failed to parse tweak mode\n");
    2394           0 :                         rc = -EINVAL;
    2395           0 :                         goto error;
    2396             :                 }
    2397             :         }
    2398             : 
    2399           0 :         if ((!module->crypto_supports_tweak_mode && key->tweak_mode != ACCEL_CRYPTO_TWEAK_MODE_DEFAULT) ||
    2400           0 :             (module->crypto_supports_tweak_mode && !module->crypto_supports_tweak_mode(key->tweak_mode))) {
    2401           0 :                 SPDK_ERRLOG("Module %s doesn't support %s tweak mode\n", module->name,
    2402             :                             g_tweak_modes[key->tweak_mode]);
    2403           0 :                 rc = -EINVAL;
    2404           0 :                 goto error;
    2405             :         }
    2406             : 
    2407           0 :         if (!module->crypto_supports_cipher(key->cipher, key->key_size)) {
    2408           0 :                 SPDK_ERRLOG("Module %s doesn't support %s cipher with %zu key size\n", module->name,
    2409             :                             g_ciphers[key->cipher], key->key_size);
    2410           0 :                 rc = -EINVAL;
    2411           0 :                 goto error;
    2412             :         }
    2413             : 
    2414           0 :         if (key->cipher == SPDK_ACCEL_CIPHER_AES_XTS) {
    2415           0 :                 if (!key->key2) {
    2416           0 :                         SPDK_ERRLOG("%s key2 is missing\n", g_ciphers[key->cipher]);
    2417           0 :                         rc = -EINVAL;
    2418           0 :                         goto error;
    2419             :                 }
    2420             : 
    2421           0 :                 if (key->key_size != key->key2_size) {
    2422           0 :                         SPDK_ERRLOG("%s key size %zu is not equal to key2 size %zu\n", g_ciphers[key->cipher],
    2423             :                                     key->key_size,
    2424             :                                     key->key2_size);
    2425           0 :                         rc = -EINVAL;
    2426           0 :                         goto error;
    2427             :                 }
    2428             : 
    2429           0 :                 if (accel_aes_xts_keys_equal(key->key, key->key_size, key->key2, key->key2_size)) {
    2430           0 :                         SPDK_ERRLOG("%s identical keys are not secure\n", g_ciphers[key->cipher]);
    2431           0 :                         rc = -EINVAL;
    2432           0 :                         goto error;
    2433             :                 }
    2434             :         }
    2435             : 
    2436           0 :         if (key->cipher == SPDK_ACCEL_CIPHER_AES_CBC) {
    2437           0 :                 if (key->key2_size) {
    2438           0 :                         SPDK_ERRLOG("%s doesn't use key2\n", g_ciphers[key->cipher]);
    2439           0 :                         rc = -EINVAL;
    2440           0 :                         goto error;
    2441             :                 }
    2442             :         }
    2443             : 
    2444           0 :         key->module_if = module;
    2445             : 
    2446           0 :         spdk_spin_lock(&g_keyring_spin);
    2447           0 :         if (_accel_crypto_key_get(param->key_name)) {
    2448           0 :                 rc = -EEXIST;
    2449             :         } else {
    2450           0 :                 rc = module->crypto_key_init(key);
    2451           0 :                 if (rc) {
    2452           0 :                         SPDK_ERRLOG("Module %s failed to initialize crypto key\n", module->name);
    2453             :                 } else {
    2454           0 :                         TAILQ_INSERT_TAIL(&g_keyring, key, link);
    2455             :                 }
    2456             :         }
    2457           0 :         spdk_spin_unlock(&g_keyring_spin);
    2458             : 
    2459           0 :         if (rc) {
    2460           0 :                 goto error;
    2461             :         }
    2462             : 
    2463           0 :         return 0;
    2464             : 
    2465           0 : error:
    2466           0 :         accel_crypto_key_free_mem(key);
    2467           0 :         return rc;
    2468             : }
    2469             : 
    2470             : int
    2471           0 : spdk_accel_crypto_key_destroy(struct spdk_accel_crypto_key *key)
    2472             : {
    2473           0 :         if (!key || !key->module_if) {
    2474           0 :                 return -EINVAL;
    2475             :         }
    2476             : 
    2477           0 :         spdk_spin_lock(&g_keyring_spin);
    2478           0 :         if (!_accel_crypto_key_get(key->param.key_name)) {
    2479           0 :                 spdk_spin_unlock(&g_keyring_spin);
    2480           0 :                 return -ENOENT;
    2481             :         }
    2482           0 :         TAILQ_REMOVE(&g_keyring, key, link);
    2483           0 :         spdk_spin_unlock(&g_keyring_spin);
    2484             : 
    2485           0 :         accel_crypto_key_destroy_unsafe(key);
    2486             : 
    2487           0 :         return 0;
    2488             : }
    2489             : 
    2490             : struct spdk_accel_crypto_key *
    2491           0 : spdk_accel_crypto_key_get(const char *name)
    2492             : {
    2493             :         struct spdk_accel_crypto_key *key;
    2494             : 
    2495           0 :         spdk_spin_lock(&g_keyring_spin);
    2496           0 :         key = _accel_crypto_key_get(name);
    2497           0 :         spdk_spin_unlock(&g_keyring_spin);
    2498             : 
    2499           0 :         return key;
    2500             : }
    2501             : 
    2502             : /* Helper function when accel modules register with the framework. */
    2503             : void
    2504           5 : spdk_accel_module_list_add(struct spdk_accel_module_if *accel_module)
    2505             : {
    2506             :         struct spdk_accel_module_if *tmp;
    2507             : 
    2508           5 :         if (_module_find_by_name(accel_module->name)) {
    2509           0 :                 SPDK_NOTICELOG("Module %s already registered\n", accel_module->name);
    2510           0 :                 assert(false);
    2511             :                 return;
    2512             :         }
    2513             : 
    2514           8 :         TAILQ_FOREACH(tmp, &spdk_accel_module_list, tailq) {
    2515           5 :                 if (accel_module->priority < tmp->priority) {
    2516           2 :                         break;
    2517             :                 }
    2518             :         }
    2519             : 
    2520           5 :         if (tmp != NULL) {
    2521           2 :                 TAILQ_INSERT_BEFORE(tmp, accel_module, tailq);
    2522             :         } else {
    2523           3 :                 TAILQ_INSERT_TAIL(&spdk_accel_module_list, accel_module, tailq);
    2524             :         }
    2525             : }
    2526             : 
    2527             : /* Framework level channel create callback. */
    2528             : static int
    2529          11 : accel_create_channel(void *io_device, void *ctx_buf)
    2530             : {
    2531          11 :         struct accel_io_channel *accel_ch = ctx_buf;
    2532             :         struct spdk_accel_task *accel_task;
    2533             :         struct spdk_accel_task_aux_data *accel_task_aux;
    2534             :         struct spdk_accel_sequence *seq;
    2535             :         struct accel_buffer *buf;
    2536             :         size_t task_size_aligned;
    2537             :         uint8_t *task_mem;
    2538          11 :         uint32_t i = 0, j;
    2539             :         int rc;
    2540             : 
    2541          11 :         task_size_aligned = SPDK_ALIGN_CEIL(g_max_accel_module_size, SPDK_CACHE_LINE_SIZE);
    2542          11 :         accel_ch->task_pool_base = aligned_alloc(SPDK_CACHE_LINE_SIZE,
    2543          11 :                                    g_opts.task_count * task_size_aligned);
    2544          11 :         if (!accel_ch->task_pool_base) {
    2545           0 :                 return -ENOMEM;
    2546             :         }
    2547          11 :         memset(accel_ch->task_pool_base, 0, g_opts.task_count * task_size_aligned);
    2548             : 
    2549          11 :         accel_ch->seq_pool_base = aligned_alloc(SPDK_CACHE_LINE_SIZE,
    2550          11 :                                                 g_opts.sequence_count * sizeof(struct spdk_accel_sequence));
    2551          11 :         if (accel_ch->seq_pool_base == NULL) {
    2552           0 :                 goto err;
    2553             :         }
    2554          11 :         memset(accel_ch->seq_pool_base, 0, g_opts.sequence_count * sizeof(struct spdk_accel_sequence));
    2555             : 
    2556          11 :         accel_ch->task_aux_data_base = calloc(g_opts.task_count, sizeof(struct spdk_accel_task_aux_data));
    2557          11 :         if (accel_ch->task_aux_data_base == NULL) {
    2558           0 :                 goto err;
    2559             :         }
    2560             : 
    2561          11 :         accel_ch->buf_pool_base = calloc(g_opts.buf_count, sizeof(struct accel_buffer));
    2562          11 :         if (accel_ch->buf_pool_base == NULL) {
    2563           0 :                 goto err;
    2564             :         }
    2565             : 
    2566          11 :         STAILQ_INIT(&accel_ch->task_pool);
    2567          11 :         SLIST_INIT(&accel_ch->task_aux_data_pool);
    2568          11 :         SLIST_INIT(&accel_ch->seq_pool);
    2569          11 :         SLIST_INIT(&accel_ch->buf_pool);
    2570             : 
    2571          11 :         task_mem = accel_ch->task_pool_base;
    2572       22539 :         for (i = 0; i < g_opts.task_count; i++) {
    2573       22528 :                 accel_task = (struct spdk_accel_task *)task_mem;
    2574       22528 :                 accel_task->aux = NULL;
    2575       22528 :                 STAILQ_INSERT_TAIL(&accel_ch->task_pool, accel_task, link);
    2576       22528 :                 task_mem += task_size_aligned;
    2577       22528 :                 accel_task_aux = &accel_ch->task_aux_data_base[i];
    2578       22528 :                 SLIST_INSERT_HEAD(&accel_ch->task_aux_data_pool, accel_task_aux, link);
    2579             :         }
    2580       22539 :         for (i = 0; i < g_opts.sequence_count; i++) {
    2581       22528 :                 seq = &accel_ch->seq_pool_base[i];
    2582       22528 :                 SLIST_INSERT_HEAD(&accel_ch->seq_pool, seq, link);
    2583             :         }
    2584       22539 :         for (i = 0; i < g_opts.buf_count; i++) {
    2585       22528 :                 buf = &accel_ch->buf_pool_base[i];
    2586       22528 :                 SLIST_INSERT_HEAD(&accel_ch->buf_pool, buf, link);
    2587             :         }
    2588             : 
    2589             :         /* Assign modules and get IO channels for each */
    2590         176 :         for (i = 0; i < SPDK_ACCEL_OPC_LAST; i++) {
    2591         165 :                 accel_ch->module_ch[i] = g_modules_opc[i].module->get_io_channel();
    2592             :                 /* This can happen if idxd runs out of channels. */
    2593         165 :                 if (accel_ch->module_ch[i] == NULL) {
    2594           0 :                         SPDK_ERRLOG("Module %s failed to get io channel\n", g_modules_opc[i].module->name);
    2595           0 :                         goto err;
    2596             :                 }
    2597             :         }
    2598             : 
    2599          11 :         if (g_accel_driver != NULL) {
    2600           0 :                 accel_ch->driver_channel = g_accel_driver->get_io_channel();
    2601           0 :                 if (accel_ch->driver_channel == NULL) {
    2602           0 :                         SPDK_ERRLOG("Failed to get driver's IO channel\n");
    2603           0 :                         goto err;
    2604             :                 }
    2605             :         }
    2606             : 
    2607          11 :         rc = spdk_iobuf_channel_init(&accel_ch->iobuf, "accel", g_opts.small_cache_size,
    2608             :                                      g_opts.large_cache_size);
    2609          11 :         if (rc != 0) {
    2610           0 :                 SPDK_ERRLOG("Failed to initialize iobuf accel channel\n");
    2611           0 :                 goto err;
    2612             :         }
    2613             : 
    2614          11 :         return 0;
    2615           0 : err:
    2616           0 :         if (accel_ch->driver_channel != NULL) {
    2617           0 :                 spdk_put_io_channel(accel_ch->driver_channel);
    2618             :         }
    2619           0 :         for (j = 0; j < i; j++) {
    2620           0 :                 spdk_put_io_channel(accel_ch->module_ch[j]);
    2621             :         }
    2622           0 :         free(accel_ch->task_pool_base);
    2623           0 :         free(accel_ch->task_aux_data_base);
    2624           0 :         free(accel_ch->seq_pool_base);
    2625           0 :         free(accel_ch->buf_pool_base);
    2626             : 
    2627           0 :         return -ENOMEM;
    2628             : }
    2629             : 
    2630             : static void
    2631          11 : accel_add_stats(struct accel_stats *total, struct accel_stats *stats)
    2632             : {
    2633             :         int i;
    2634             : 
    2635          11 :         total->sequence_executed += stats->sequence_executed;
    2636          11 :         total->sequence_failed += stats->sequence_failed;
    2637          11 :         total->sequence_outstanding += stats->sequence_outstanding;
    2638          11 :         total->retry.task += stats->retry.task;
    2639          11 :         total->retry.sequence += stats->retry.sequence;
    2640          11 :         total->retry.iobuf += stats->retry.iobuf;
    2641          11 :         total->retry.bufdesc += stats->retry.bufdesc;
    2642         176 :         for (i = 0; i < SPDK_ACCEL_OPC_LAST; ++i) {
    2643         165 :                 total->operations[i].executed += stats->operations[i].executed;
    2644         165 :                 total->operations[i].failed += stats->operations[i].failed;
    2645         165 :                 total->operations[i].num_bytes += stats->operations[i].num_bytes;
    2646             :         }
    2647          11 : }
    2648             : 
    2649             : /* Framework level channel destroy callback. */
    2650             : static void
    2651          11 : accel_destroy_channel(void *io_device, void *ctx_buf)
    2652             : {
    2653          11 :         struct accel_io_channel *accel_ch = ctx_buf;
    2654             :         int i;
    2655             : 
    2656          11 :         spdk_iobuf_channel_fini(&accel_ch->iobuf);
    2657             : 
    2658          11 :         if (accel_ch->driver_channel != NULL) {
    2659           0 :                 spdk_put_io_channel(accel_ch->driver_channel);
    2660             :         }
    2661             : 
    2662         176 :         for (i = 0; i < SPDK_ACCEL_OPC_LAST; i++) {
    2663         165 :                 assert(accel_ch->module_ch[i] != NULL);
    2664         165 :                 spdk_put_io_channel(accel_ch->module_ch[i]);
    2665         165 :                 accel_ch->module_ch[i] = NULL;
    2666             :         }
    2667             : 
    2668             :         /* Update global stats to make sure channel's stats aren't lost after a channel is gone */
    2669          11 :         spdk_spin_lock(&g_stats_lock);
    2670          11 :         accel_add_stats(&g_stats, &accel_ch->stats);
    2671          11 :         spdk_spin_unlock(&g_stats_lock);
    2672             : 
    2673          11 :         free(accel_ch->task_pool_base);
    2674          11 :         free(accel_ch->task_aux_data_base);
    2675          11 :         free(accel_ch->seq_pool_base);
    2676          11 :         free(accel_ch->buf_pool_base);
    2677          11 : }
    2678             : 
    2679             : struct spdk_io_channel *
    2680          11 : spdk_accel_get_io_channel(void)
    2681             : {
    2682          11 :         return spdk_get_io_channel(&spdk_accel_module_list);
    2683             : }
    2684             : 
    2685             : static int
    2686           2 : accel_module_initialize(void)
    2687             : {
    2688             :         struct spdk_accel_module_if *accel_module, *tmp_module;
    2689           2 :         int rc = 0, module_rc;
    2690             : 
    2691           7 :         TAILQ_FOREACH_SAFE(accel_module, &spdk_accel_module_list, tailq, tmp_module) {
    2692           5 :                 module_rc = accel_module->module_init();
    2693           5 :                 if (module_rc) {
    2694           0 :                         TAILQ_REMOVE(&spdk_accel_module_list, accel_module, tailq);
    2695           0 :                         if (module_rc == -ENODEV) {
    2696           0 :                                 SPDK_NOTICELOG("No devices for module %s, skipping\n", accel_module->name);
    2697           0 :                         } else if (!rc) {
    2698           0 :                                 SPDK_ERRLOG("Module %s initialization failed with %d\n", accel_module->name, module_rc);
    2699           0 :                                 rc = module_rc;
    2700             :                         }
    2701           0 :                         continue;
    2702             :                 }
    2703             : 
    2704           5 :                 SPDK_DEBUGLOG(accel, "Module %s initialized.\n", accel_module->name);
    2705             :         }
    2706             : 
    2707           2 :         return rc;
    2708             : }
    2709             : 
    2710             : static void
    2711          30 : accel_module_init_opcode(enum spdk_accel_opcode opcode)
    2712             : {
    2713          30 :         struct accel_module *module = &g_modules_opc[opcode];
    2714          30 :         struct spdk_accel_module_if *module_if = module->module;
    2715             : 
    2716          30 :         if (module_if->get_memory_domains != NULL) {
    2717           0 :                 module->supports_memory_domains = module_if->get_memory_domains(NULL, 0) > 0;
    2718             :         }
    2719          30 : }
    2720             : 
    2721             : static int
    2722           0 : accel_memory_domain_translate(struct spdk_memory_domain *src_domain, void *src_domain_ctx,
    2723             :                               struct spdk_memory_domain *dst_domain, struct spdk_memory_domain_translation_ctx *dst_domain_ctx,
    2724             :                               void *addr, size_t len, struct spdk_memory_domain_translation_result *result)
    2725             : {
    2726           0 :         struct accel_buffer *buf = src_domain_ctx;
    2727             : 
    2728           0 :         SPDK_DEBUGLOG(accel, "translate addr %p, len %zu\n", addr, len);
    2729             : 
    2730           0 :         assert(g_accel_domain == src_domain);
    2731           0 :         assert(spdk_memory_domain_get_system_domain() == dst_domain);
    2732           0 :         assert(buf->buf == NULL);
    2733           0 :         assert(addr == ACCEL_BUFFER_BASE);
    2734           0 :         assert(len == buf->len);
    2735             : 
    2736           0 :         buf->buf = spdk_iobuf_get(&buf->ch->iobuf, buf->len, NULL, NULL);
    2737           0 :         if (spdk_unlikely(buf->buf == NULL)) {
    2738           0 :                 return -ENOMEM;
    2739             :         }
    2740             : 
    2741           0 :         result->iov_count = 1;
    2742           0 :         result->iov.iov_base = buf->buf;
    2743           0 :         result->iov.iov_len = buf->len;
    2744           0 :         SPDK_DEBUGLOG(accel, "translated addr %p\n", result->iov.iov_base);
    2745           0 :         return 0;
    2746             : }
    2747             : 
    2748             : static void
    2749           0 : accel_memory_domain_invalidate(struct spdk_memory_domain *domain, void *domain_ctx,
    2750             :                                struct iovec *iov, uint32_t iovcnt)
    2751             : {
    2752           0 :         struct accel_buffer *buf = domain_ctx;
    2753             : 
    2754           0 :         SPDK_DEBUGLOG(accel, "invalidate addr %p, len %zu\n", iov[0].iov_base, iov[0].iov_len);
    2755             : 
    2756           0 :         assert(g_accel_domain == domain);
    2757           0 :         assert(iovcnt == 1);
    2758           0 :         assert(buf->buf != NULL);
    2759           0 :         assert(iov[0].iov_base == buf->buf);
    2760           0 :         assert(iov[0].iov_len == buf->len);
    2761             : 
    2762           0 :         spdk_iobuf_put(&buf->ch->iobuf, buf->buf, buf->len);
    2763           0 :         buf->buf = NULL;
    2764           0 : }
    2765             : 
    2766             : int
    2767           2 : spdk_accel_initialize(void)
    2768             : {
    2769             :         enum spdk_accel_opcode op;
    2770           2 :         struct spdk_accel_module_if *accel_module = NULL;
    2771             :         int rc;
    2772             : 
    2773             :         /*
    2774             :          * We need a unique identifier for the accel framework, so use the
    2775             :          * spdk_accel_module_list address for this purpose.
    2776             :          */
    2777           2 :         spdk_io_device_register(&spdk_accel_module_list, accel_create_channel, accel_destroy_channel,
    2778             :                                 sizeof(struct accel_io_channel), "accel");
    2779             : 
    2780           2 :         spdk_spin_init(&g_keyring_spin);
    2781           2 :         spdk_spin_init(&g_stats_lock);
    2782             : 
    2783           2 :         rc = spdk_memory_domain_create(&g_accel_domain, SPDK_DMA_DEVICE_TYPE_ACCEL, NULL,
    2784             :                                        "SPDK_ACCEL_DMA_DEVICE");
    2785           2 :         if (rc != 0) {
    2786           0 :                 SPDK_ERRLOG("Failed to create accel memory domain\n");
    2787           0 :                 return rc;
    2788             :         }
    2789             : 
    2790           2 :         spdk_memory_domain_set_translation(g_accel_domain, accel_memory_domain_translate);
    2791           2 :         spdk_memory_domain_set_invalidate(g_accel_domain, accel_memory_domain_invalidate);
    2792             : 
    2793           2 :         g_modules_started = true;
    2794           2 :         rc = accel_module_initialize();
    2795           2 :         if (rc) {
    2796           0 :                 return rc;
    2797             :         }
    2798             : 
    2799           2 :         if (g_accel_driver != NULL && g_accel_driver->init != NULL) {
    2800           0 :                 rc = g_accel_driver->init();
    2801           0 :                 if (rc != 0) {
    2802           0 :                         SPDK_ERRLOG("Failed to initialize driver %s: %s\n", g_accel_driver->name,
    2803             :                                     spdk_strerror(-rc));
    2804           0 :                         return rc;
    2805             :                 }
    2806             :         }
    2807             : 
    2808             :         /* The module list is order by priority, with the highest priority modules being at the end
    2809             :          * of the list.  The software module should be somewhere at the beginning of the list,
    2810             :          * before all HW modules.
    2811             :          * NOTE: all opcodes must be supported by software in the event that no HW modules are
    2812             :          * initialized to support the operation.
    2813             :          */
    2814           7 :         TAILQ_FOREACH(accel_module, &spdk_accel_module_list, tailq) {
    2815          80 :                 for (op = 0; op < SPDK_ACCEL_OPC_LAST; op++) {
    2816          75 :                         if (accel_module->supports_opcode(op)) {
    2817          75 :                                 g_modules_opc[op].module = accel_module;
    2818          75 :                                 SPDK_DEBUGLOG(accel, "OPC 0x%x now assigned to %s\n", op, accel_module->name);
    2819             :                         }
    2820             :                 }
    2821             : 
    2822           5 :                 if (accel_module->get_ctx_size != NULL) {
    2823           1 :                         g_max_accel_module_size = spdk_max(g_max_accel_module_size,
    2824             :                                                            accel_module->get_ctx_size());
    2825             :                 }
    2826             :         }
    2827             : 
    2828             :         /* Now lets check for overrides and apply all that exist */
    2829          32 :         for (op = 0; op < SPDK_ACCEL_OPC_LAST; op++) {
    2830          30 :                 if (g_modules_opc_override[op] != NULL) {
    2831           0 :                         accel_module = _module_find_by_name(g_modules_opc_override[op]);
    2832           0 :                         if (accel_module == NULL) {
    2833           0 :                                 SPDK_ERRLOG("Invalid module name of %s\n", g_modules_opc_override[op]);
    2834           0 :                                 return -EINVAL;
    2835             :                         }
    2836           0 :                         if (accel_module->supports_opcode(op) == false) {
    2837           0 :                                 SPDK_ERRLOG("Module %s does not support op code %d\n", accel_module->name, op);
    2838           0 :                                 return -EINVAL;
    2839             :                         }
    2840           0 :                         g_modules_opc[op].module = accel_module;
    2841             :                 }
    2842             :         }
    2843             : 
    2844           2 :         if (g_modules_opc[SPDK_ACCEL_OPC_ENCRYPT].module != g_modules_opc[SPDK_ACCEL_OPC_DECRYPT].module) {
    2845           0 :                 SPDK_ERRLOG("Different accel modules are assigned to encrypt and decrypt operations");
    2846           0 :                 return -EINVAL;
    2847             :         }
    2848             : 
    2849          32 :         for (op = 0; op < SPDK_ACCEL_OPC_LAST; op++) {
    2850          30 :                 assert(g_modules_opc[op].module != NULL);
    2851          30 :                 accel_module_init_opcode(op);
    2852             :         }
    2853             : 
    2854           2 :         rc = spdk_iobuf_register_module("accel");
    2855           2 :         if (rc != 0) {
    2856           0 :                 SPDK_ERRLOG("Failed to register accel iobuf module\n");
    2857           0 :                 return rc;
    2858             :         }
    2859             : 
    2860           2 :         return 0;
    2861             : }
    2862             : 
    2863             : static void
    2864           2 : accel_module_finish_cb(void)
    2865             : {
    2866           2 :         spdk_accel_fini_cb cb_fn = g_fini_cb_fn;
    2867             : 
    2868           2 :         cb_fn(g_fini_cb_arg);
    2869           2 :         g_fini_cb_fn = NULL;
    2870           2 :         g_fini_cb_arg = NULL;
    2871           2 : }
    2872             : 
    2873             : static void
    2874           0 : accel_write_overridden_opc(struct spdk_json_write_ctx *w, const char *opc_str,
    2875             :                            const char *module_str)
    2876             : {
    2877           0 :         spdk_json_write_object_begin(w);
    2878           0 :         spdk_json_write_named_string(w, "method", "accel_assign_opc");
    2879           0 :         spdk_json_write_named_object_begin(w, "params");
    2880           0 :         spdk_json_write_named_string(w, "opname", opc_str);
    2881           0 :         spdk_json_write_named_string(w, "module", module_str);
    2882           0 :         spdk_json_write_object_end(w);
    2883           0 :         spdk_json_write_object_end(w);
    2884           0 : }
    2885             : 
    2886             : static void
    2887           0 : __accel_crypto_key_dump_param(struct spdk_json_write_ctx *w, struct spdk_accel_crypto_key *key)
    2888             : {
    2889           0 :         spdk_json_write_named_string(w, "name", key->param.key_name);
    2890           0 :         spdk_json_write_named_string(w, "cipher", key->param.cipher);
    2891           0 :         spdk_json_write_named_string(w, "key", key->param.hex_key);
    2892           0 :         if (key->param.hex_key2) {
    2893           0 :                 spdk_json_write_named_string(w, "key2", key->param.hex_key2);
    2894             :         }
    2895             : 
    2896           0 :         if (key->param.tweak_mode) {
    2897           0 :                 spdk_json_write_named_string(w, "tweak_mode", key->param.tweak_mode);
    2898             :         }
    2899           0 : }
    2900             : 
    2901             : void
    2902           0 : _accel_crypto_key_dump_param(struct spdk_json_write_ctx *w, struct spdk_accel_crypto_key *key)
    2903             : {
    2904           0 :         spdk_json_write_object_begin(w);
    2905           0 :         __accel_crypto_key_dump_param(w, key);
    2906           0 :         spdk_json_write_object_end(w);
    2907           0 : }
    2908             : 
    2909             : static void
    2910           0 : _accel_crypto_key_write_config_json(struct spdk_json_write_ctx *w,
    2911             :                                     struct spdk_accel_crypto_key *key)
    2912             : {
    2913           0 :         spdk_json_write_object_begin(w);
    2914           0 :         spdk_json_write_named_string(w, "method", "accel_crypto_key_create");
    2915           0 :         spdk_json_write_named_object_begin(w, "params");
    2916           0 :         __accel_crypto_key_dump_param(w, key);
    2917           0 :         spdk_json_write_object_end(w);
    2918           0 :         spdk_json_write_object_end(w);
    2919           0 : }
    2920             : 
    2921             : static void
    2922           0 : accel_write_options(struct spdk_json_write_ctx *w)
    2923             : {
    2924           0 :         spdk_json_write_object_begin(w);
    2925           0 :         spdk_json_write_named_string(w, "method", "accel_set_options");
    2926           0 :         spdk_json_write_named_object_begin(w, "params");
    2927           0 :         spdk_json_write_named_uint32(w, "small_cache_size", g_opts.small_cache_size);
    2928           0 :         spdk_json_write_named_uint32(w, "large_cache_size", g_opts.large_cache_size);
    2929           0 :         spdk_json_write_named_uint32(w, "task_count", g_opts.task_count);
    2930           0 :         spdk_json_write_named_uint32(w, "sequence_count", g_opts.sequence_count);
    2931           0 :         spdk_json_write_named_uint32(w, "buf_count", g_opts.buf_count);
    2932           0 :         spdk_json_write_object_end(w);
    2933           0 :         spdk_json_write_object_end(w);
    2934           0 : }
    2935             : 
    2936             : static void
    2937           0 : _accel_crypto_keys_write_config_json(struct spdk_json_write_ctx *w, bool full_dump)
    2938             : {
    2939             :         struct spdk_accel_crypto_key *key;
    2940             : 
    2941           0 :         spdk_spin_lock(&g_keyring_spin);
    2942           0 :         TAILQ_FOREACH(key, &g_keyring, link) {
    2943           0 :                 if (full_dump) {
    2944           0 :                         _accel_crypto_key_write_config_json(w, key);
    2945             :                 } else {
    2946           0 :                         _accel_crypto_key_dump_param(w, key);
    2947             :                 }
    2948             :         }
    2949           0 :         spdk_spin_unlock(&g_keyring_spin);
    2950           0 : }
    2951             : 
    2952             : void
    2953           0 : _accel_crypto_keys_dump_param(struct spdk_json_write_ctx *w)
    2954             : {
    2955           0 :         _accel_crypto_keys_write_config_json(w, false);
    2956           0 : }
    2957             : 
    2958             : void
    2959           0 : spdk_accel_write_config_json(struct spdk_json_write_ctx *w)
    2960             : {
    2961             :         struct spdk_accel_module_if *accel_module;
    2962             :         int i;
    2963             : 
    2964           0 :         spdk_json_write_array_begin(w);
    2965           0 :         accel_write_options(w);
    2966             : 
    2967           0 :         TAILQ_FOREACH(accel_module, &spdk_accel_module_list, tailq) {
    2968           0 :                 if (accel_module->write_config_json) {
    2969           0 :                         accel_module->write_config_json(w);
    2970             :                 }
    2971             :         }
    2972           0 :         for (i = 0; i < SPDK_ACCEL_OPC_LAST; i++) {
    2973           0 :                 if (g_modules_opc_override[i]) {
    2974           0 :                         accel_write_overridden_opc(w, g_opcode_strings[i], g_modules_opc_override[i]);
    2975             :                 }
    2976             :         }
    2977             : 
    2978           0 :         _accel_crypto_keys_write_config_json(w, true);
    2979             : 
    2980           0 :         spdk_json_write_array_end(w);
    2981           0 : }
    2982             : 
    2983             : void
    2984           7 : spdk_accel_module_finish(void)
    2985             : {
    2986           7 :         if (!g_accel_module) {
    2987           2 :                 g_accel_module = TAILQ_FIRST(&spdk_accel_module_list);
    2988             :         } else {
    2989           5 :                 g_accel_module = TAILQ_NEXT(g_accel_module, tailq);
    2990             :         }
    2991             : 
    2992           7 :         if (!g_accel_module) {
    2993           2 :                 if (g_accel_driver != NULL && g_accel_driver->fini != NULL) {
    2994           0 :                         g_accel_driver->fini();
    2995             :                 }
    2996             : 
    2997           2 :                 spdk_spin_destroy(&g_keyring_spin);
    2998           2 :                 spdk_spin_destroy(&g_stats_lock);
    2999           2 :                 if (g_accel_domain) {
    3000           2 :                         spdk_memory_domain_destroy(g_accel_domain);
    3001           2 :                         g_accel_domain = NULL;
    3002             :                 }
    3003           2 :                 accel_module_finish_cb();
    3004           2 :                 return;
    3005             :         }
    3006             : 
    3007           5 :         if (g_accel_module->module_fini) {
    3008           1 :                 spdk_thread_send_msg(spdk_get_thread(), g_accel_module->module_fini, NULL);
    3009             :         } else {
    3010           4 :                 spdk_accel_module_finish();
    3011             :         }
    3012             : }
    3013             : 
    3014             : static void
    3015           2 : accel_io_device_unregister_cb(void *io_device)
    3016             : {
    3017             :         struct spdk_accel_crypto_key *key, *key_tmp;
    3018             :         enum spdk_accel_opcode op;
    3019             : 
    3020           2 :         spdk_spin_lock(&g_keyring_spin);
    3021           2 :         TAILQ_FOREACH_SAFE(key, &g_keyring, link, key_tmp) {
    3022           0 :                 accel_crypto_key_destroy_unsafe(key);
    3023             :         }
    3024           2 :         spdk_spin_unlock(&g_keyring_spin);
    3025             : 
    3026          32 :         for (op = 0; op < SPDK_ACCEL_OPC_LAST; op++) {
    3027          30 :                 if (g_modules_opc_override[op] != NULL) {
    3028           0 :                         free(g_modules_opc_override[op]);
    3029           0 :                         g_modules_opc_override[op] = NULL;
    3030             :                 }
    3031          30 :                 g_modules_opc[op].module = NULL;
    3032             :         }
    3033             : 
    3034           2 :         spdk_accel_module_finish();
    3035           2 : }
    3036             : 
    3037             : void
    3038           2 : spdk_accel_finish(spdk_accel_fini_cb cb_fn, void *cb_arg)
    3039             : {
    3040           2 :         assert(cb_fn != NULL);
    3041             : 
    3042           2 :         g_fini_cb_fn = cb_fn;
    3043           2 :         g_fini_cb_arg = cb_arg;
    3044             : 
    3045           2 :         spdk_io_device_unregister(&spdk_accel_module_list, accel_io_device_unregister_cb);
    3046           2 : }
    3047             : 
    3048             : static struct spdk_accel_driver *
    3049           2 : accel_find_driver(const char *name)
    3050             : {
    3051             :         struct spdk_accel_driver *driver;
    3052             : 
    3053           2 :         TAILQ_FOREACH(driver, &g_accel_drivers, tailq) {
    3054           1 :                 if (strcmp(driver->name, name) == 0) {
    3055           1 :                         return driver;
    3056             :                 }
    3057             :         }
    3058             : 
    3059           1 :         return NULL;
    3060             : }
    3061             : 
    3062             : int
    3063           1 : spdk_accel_set_driver(const char *name)
    3064             : {
    3065             :         struct spdk_accel_driver *driver;
    3066             : 
    3067           1 :         driver = accel_find_driver(name);
    3068           1 :         if (driver == NULL) {
    3069           0 :                 SPDK_ERRLOG("Couldn't find driver named '%s'\n", name);
    3070           0 :                 return -ENODEV;
    3071             :         }
    3072             : 
    3073           1 :         g_accel_driver = driver;
    3074             : 
    3075           1 :         return 0;
    3076             : }
    3077             : 
    3078             : const char *
    3079           0 : spdk_accel_get_driver_name(void)
    3080             : {
    3081           0 :         if (!g_accel_driver) {
    3082           0 :                 return NULL;
    3083             :         }
    3084             : 
    3085           0 :         return g_accel_driver->name;
    3086             : }
    3087             : 
    3088             : void
    3089           1 : spdk_accel_driver_register(struct spdk_accel_driver *driver)
    3090             : {
    3091           1 :         if (accel_find_driver(driver->name)) {
    3092           0 :                 SPDK_ERRLOG("Driver named '%s' has already been registered\n", driver->name);
    3093           0 :                 assert(0);
    3094             :                 return;
    3095             :         }
    3096             : 
    3097           1 :         TAILQ_INSERT_TAIL(&g_accel_drivers, driver, tailq);
    3098             : }
    3099             : 
    3100             : int
    3101           0 : spdk_accel_set_opts(const struct spdk_accel_opts *opts)
    3102             : {
    3103           0 :         if (!opts) {
    3104           0 :                 SPDK_ERRLOG("opts cannot be NULL\n");
    3105           0 :                 return -1;
    3106             :         }
    3107             : 
    3108           0 :         if (!opts->opts_size) {
    3109           0 :                 SPDK_ERRLOG("opts_size inside opts cannot be zero value\n");
    3110           0 :                 return -1;
    3111             :         }
    3112             : 
    3113             : #define SET_FIELD(field) \
    3114             :         if (offsetof(struct spdk_accel_opts, field) + sizeof(opts->field) <= opts->opts_size) { \
    3115             :                 g_opts.field = opts->field; \
    3116             :         } \
    3117             : 
    3118           0 :         SET_FIELD(small_cache_size);
    3119           0 :         SET_FIELD(large_cache_size);
    3120           0 :         SET_FIELD(task_count);
    3121           0 :         SET_FIELD(sequence_count);
    3122           0 :         SET_FIELD(buf_count);
    3123             : 
    3124           0 :         g_opts.opts_size = opts->opts_size;
    3125             : 
    3126             : #undef SET_FIELD
    3127             : 
    3128           0 :         return 0;
    3129             : }
    3130             : 
    3131             : void
    3132           0 : spdk_accel_get_opts(struct spdk_accel_opts *opts, size_t opts_size)
    3133             : {
    3134           0 :         if (!opts) {
    3135           0 :                 SPDK_ERRLOG("opts should not be NULL\n");
    3136           0 :                 return;
    3137             :         }
    3138             : 
    3139           0 :         if (!opts_size) {
    3140           0 :                 SPDK_ERRLOG("opts_size should not be zero value\n");
    3141           0 :                 return;
    3142             :         }
    3143             : 
    3144           0 :         opts->opts_size = opts_size;
    3145             : 
    3146             : #define SET_FIELD(field) \
    3147             :         if (offsetof(struct spdk_accel_opts, field) + sizeof(opts->field) <= opts_size) { \
    3148             :                 opts->field = g_opts.field; \
    3149             :         } \
    3150             : 
    3151           0 :         SET_FIELD(small_cache_size);
    3152           0 :         SET_FIELD(large_cache_size);
    3153           0 :         SET_FIELD(task_count);
    3154           0 :         SET_FIELD(sequence_count);
    3155           0 :         SET_FIELD(buf_count);
    3156             : 
    3157             : #undef SET_FIELD
    3158             : 
    3159             :         /* Do not remove this statement, you should always update this statement when you adding a new field,
    3160             :          * and do not forget to add the SET_FIELD statement for your added field. */
    3161             :         SPDK_STATIC_ASSERT(sizeof(struct spdk_accel_opts) == 28, "Incorrect size");
    3162             : }
    3163             : 
    3164             : struct accel_get_stats_ctx {
    3165             :         struct accel_stats      stats;
    3166             :         accel_get_stats_cb      cb_fn;
    3167             :         void                    *cb_arg;
    3168             : };
    3169             : 
    3170             : static void
    3171           0 : accel_get_channel_stats_done(struct spdk_io_channel_iter *iter, int status)
    3172             : {
    3173           0 :         struct accel_get_stats_ctx *ctx = spdk_io_channel_iter_get_ctx(iter);
    3174             : 
    3175           0 :         ctx->cb_fn(&ctx->stats, ctx->cb_arg);
    3176           0 :         free(ctx);
    3177           0 : }
    3178             : 
    3179             : static void
    3180           0 : accel_get_channel_stats(struct spdk_io_channel_iter *iter)
    3181             : {
    3182           0 :         struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(iter);
    3183           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    3184           0 :         struct accel_get_stats_ctx *ctx = spdk_io_channel_iter_get_ctx(iter);
    3185             : 
    3186           0 :         accel_add_stats(&ctx->stats, &accel_ch->stats);
    3187           0 :         spdk_for_each_channel_continue(iter, 0);
    3188           0 : }
    3189             : 
    3190             : int
    3191           0 : accel_get_stats(accel_get_stats_cb cb_fn, void *cb_arg)
    3192             : {
    3193             :         struct accel_get_stats_ctx *ctx;
    3194             : 
    3195           0 :         ctx = calloc(1, sizeof(*ctx));
    3196           0 :         if (ctx == NULL) {
    3197           0 :                 return -ENOMEM;
    3198             :         }
    3199             : 
    3200           0 :         spdk_spin_lock(&g_stats_lock);
    3201           0 :         accel_add_stats(&ctx->stats, &g_stats);
    3202           0 :         spdk_spin_unlock(&g_stats_lock);
    3203             : 
    3204           0 :         ctx->cb_fn = cb_fn;
    3205           0 :         ctx->cb_arg = cb_arg;
    3206             : 
    3207           0 :         spdk_for_each_channel(&spdk_accel_module_list, accel_get_channel_stats, ctx,
    3208             :                               accel_get_channel_stats_done);
    3209             : 
    3210           0 :         return 0;
    3211             : }
    3212             : 
    3213             : void
    3214           0 : spdk_accel_get_opcode_stats(struct spdk_io_channel *ch, enum spdk_accel_opcode opcode,
    3215             :                             struct spdk_accel_opcode_stats *stats, size_t size)
    3216             : {
    3217           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    3218             : 
    3219             : #define FIELD_OK(field) \
    3220             :         offsetof(struct spdk_accel_opcode_stats, field) + sizeof(stats->field) <= size
    3221             : 
    3222             : #define SET_FIELD(field, value) \
    3223             :         if (FIELD_OK(field)) { \
    3224             :                 stats->field = value; \
    3225             :         }
    3226             : 
    3227           0 :         SET_FIELD(executed, accel_ch->stats.operations[opcode].executed);
    3228           0 :         SET_FIELD(failed, accel_ch->stats.operations[opcode].failed);
    3229           0 :         SET_FIELD(num_bytes, accel_ch->stats.operations[opcode].num_bytes);
    3230             : 
    3231             : #undef FIELD_OK
    3232             : #undef SET_FIELD
    3233           0 : }
    3234             : 
    3235             : uint8_t
    3236           0 : spdk_accel_get_buf_align(enum spdk_accel_opcode opcode,
    3237             :                          const struct spdk_accel_operation_exec_ctx *ctx)
    3238             : {
    3239           0 :         struct spdk_accel_module_if *module = g_modules_opc[opcode].module;
    3240           0 :         struct spdk_accel_opcode_info modinfo = {}, drvinfo = {};
    3241             : 
    3242           0 :         if (g_accel_driver != NULL && g_accel_driver->get_operation_info != NULL) {
    3243           0 :                 g_accel_driver->get_operation_info(opcode, ctx, &drvinfo);
    3244             :         }
    3245             : 
    3246           0 :         if (module->get_operation_info != NULL) {
    3247           0 :                 module->get_operation_info(opcode, ctx, &modinfo);
    3248             :         }
    3249             : 
    3250             :         /* If a driver is set, it'll execute most of the operations, while the rest will usually
    3251             :          * fall back to accel_sw, which doesn't have any alignment requiremenets.  However, to be
    3252             :          * extra safe, return the max(driver, module) if a driver delegates some operations to a
    3253             :          * hardware module. */
    3254           0 :         return spdk_max(modinfo.required_alignment, drvinfo.required_alignment);
    3255             : }
    3256             : 
    3257             : struct spdk_accel_module_if *
    3258           0 : spdk_accel_get_module(const char *name)
    3259             : {
    3260             :         struct spdk_accel_module_if *module;
    3261             : 
    3262           0 :         TAILQ_FOREACH(module, &spdk_accel_module_list, tailq) {
    3263           0 :                 if (strcmp(module->name, name) == 0) {
    3264           0 :                         return module;
    3265             :                 }
    3266             :         }
    3267             : 
    3268           0 :         return NULL;
    3269             : }
    3270             : 
    3271             : int
    3272           0 : spdk_accel_get_opc_memory_domains(enum spdk_accel_opcode opcode,
    3273             :                                   struct spdk_memory_domain **domains,
    3274             :                                   int array_size)
    3275             : {
    3276           0 :         assert(opcode < SPDK_ACCEL_OPC_LAST);
    3277             : 
    3278           0 :         if (g_modules_opc[opcode].module->get_memory_domains) {
    3279           0 :                 return g_modules_opc[opcode].module->get_memory_domains(domains, array_size);
    3280             :         }
    3281             : 
    3282           0 :         return 0;
    3283             : }
    3284             : 
    3285           1 : SPDK_LOG_REGISTER_COMPONENT(accel)

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