LCOV - code coverage report
Current view: top level - lib/accel - accel.c (source / functions) Hit Total Coverage
Test: ut_cov_unit.info Lines: 1133 1684 67.3 %
Date: 2024-07-15 18:35:43 Functions: 81 115 70.4 %

          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 ACCEL_TASKS_PER_CHANNEL         2048
      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             : #define ACCEL_TASKS_IN_SEQUENCE_LIMIT   8
      41             : 
      42             : struct accel_module {
      43             :         struct spdk_accel_module_if     *module;
      44             :         bool                            supports_memory_domains;
      45             : };
      46             : 
      47             : /* Largest context size for all accel modules */
      48             : static size_t g_max_accel_module_size = sizeof(struct spdk_accel_task);
      49             : 
      50             : static struct spdk_accel_module_if *g_accel_module = NULL;
      51             : static spdk_accel_fini_cb g_fini_cb_fn = NULL;
      52             : static void *g_fini_cb_arg = NULL;
      53             : static bool g_modules_started = false;
      54             : static struct spdk_memory_domain *g_accel_domain;
      55             : 
      56             : /* Global list of registered accelerator modules */
      57             : static TAILQ_HEAD(, spdk_accel_module_if) spdk_accel_module_list =
      58             :         TAILQ_HEAD_INITIALIZER(spdk_accel_module_list);
      59             : 
      60             : /* Crypto keyring */
      61             : static TAILQ_HEAD(, spdk_accel_crypto_key) g_keyring = TAILQ_HEAD_INITIALIZER(g_keyring);
      62             : static struct spdk_spinlock g_keyring_spin;
      63             : 
      64             : /* Global array mapping capabilities to modules */
      65             : static struct accel_module g_modules_opc[SPDK_ACCEL_OPC_LAST] = {};
      66             : static char *g_modules_opc_override[SPDK_ACCEL_OPC_LAST] = {};
      67             : TAILQ_HEAD(, spdk_accel_driver) g_accel_drivers = TAILQ_HEAD_INITIALIZER(g_accel_drivers);
      68             : static struct spdk_accel_driver *g_accel_driver;
      69             : static struct spdk_accel_opts g_opts = {
      70             :         .small_cache_size = ACCEL_SMALL_CACHE_SIZE,
      71             :         .large_cache_size = ACCEL_LARGE_CACHE_SIZE,
      72             :         .task_count = ACCEL_TASKS_PER_CHANNEL,
      73             :         .sequence_count = ACCEL_TASKS_PER_CHANNEL,
      74             :         .buf_count = ACCEL_TASKS_PER_CHANNEL,
      75             : };
      76             : static struct accel_stats g_stats;
      77             : static struct spdk_spinlock g_stats_lock;
      78             : 
      79             : static const char *g_opcode_strings[SPDK_ACCEL_OPC_LAST] = {
      80             :         "copy", "fill", "dualcast", "compare", "crc32c", "copy_crc32c",
      81             :         "compress", "decompress", "encrypt", "decrypt", "xor",
      82             :         "dif_verify", "dif_verify_copy", "dif_generate", "dif_generate_copy"
      83             : };
      84             : 
      85             : enum accel_sequence_state {
      86             :         ACCEL_SEQUENCE_STATE_INIT,
      87             :         ACCEL_SEQUENCE_STATE_CHECK_VIRTBUF,
      88             :         ACCEL_SEQUENCE_STATE_AWAIT_VIRTBUF,
      89             :         ACCEL_SEQUENCE_STATE_CHECK_BOUNCEBUF,
      90             :         ACCEL_SEQUENCE_STATE_AWAIT_BOUNCEBUF,
      91             :         ACCEL_SEQUENCE_STATE_PULL_DATA,
      92             :         ACCEL_SEQUENCE_STATE_AWAIT_PULL_DATA,
      93             :         ACCEL_SEQUENCE_STATE_EXEC_TASK,
      94             :         ACCEL_SEQUENCE_STATE_AWAIT_TASK,
      95             :         ACCEL_SEQUENCE_STATE_COMPLETE_TASK,
      96             :         ACCEL_SEQUENCE_STATE_NEXT_TASK,
      97             :         ACCEL_SEQUENCE_STATE_PUSH_DATA,
      98             :         ACCEL_SEQUENCE_STATE_AWAIT_PUSH_DATA,
      99             :         ACCEL_SEQUENCE_STATE_DRIVER_EXEC_TASKS,
     100             :         ACCEL_SEQUENCE_STATE_DRIVER_AWAIT_TASKS,
     101             :         ACCEL_SEQUENCE_STATE_DRIVER_COMPLETE_TASKS,
     102             :         ACCEL_SEQUENCE_STATE_ERROR,
     103             :         ACCEL_SEQUENCE_STATE_MAX,
     104             : };
     105             : 
     106             : static const char *g_seq_states[]
     107             : __attribute__((unused)) = {
     108             :         [ACCEL_SEQUENCE_STATE_INIT] = "init",
     109             :         [ACCEL_SEQUENCE_STATE_CHECK_VIRTBUF] = "check-virtbuf",
     110             :         [ACCEL_SEQUENCE_STATE_AWAIT_VIRTBUF] = "await-virtbuf",
     111             :         [ACCEL_SEQUENCE_STATE_CHECK_BOUNCEBUF] = "check-bouncebuf",
     112             :         [ACCEL_SEQUENCE_STATE_AWAIT_BOUNCEBUF] = "await-bouncebuf",
     113             :         [ACCEL_SEQUENCE_STATE_PULL_DATA] = "pull-data",
     114             :         [ACCEL_SEQUENCE_STATE_AWAIT_PULL_DATA] = "await-pull-data",
     115             :         [ACCEL_SEQUENCE_STATE_EXEC_TASK] = "exec-task",
     116             :         [ACCEL_SEQUENCE_STATE_AWAIT_TASK] = "await-task",
     117             :         [ACCEL_SEQUENCE_STATE_COMPLETE_TASK] = "complete-task",
     118             :         [ACCEL_SEQUENCE_STATE_NEXT_TASK] = "next-task",
     119             :         [ACCEL_SEQUENCE_STATE_PUSH_DATA] = "push-data",
     120             :         [ACCEL_SEQUENCE_STATE_AWAIT_PUSH_DATA] = "await-push-data",
     121             :         [ACCEL_SEQUENCE_STATE_DRIVER_EXEC_TASKS] = "driver-exec-tasks",
     122             :         [ACCEL_SEQUENCE_STATE_DRIVER_AWAIT_TASKS] = "driver-await-tasks",
     123             :         [ACCEL_SEQUENCE_STATE_DRIVER_COMPLETE_TASKS] = "driver-complete-tasks",
     124             :         [ACCEL_SEQUENCE_STATE_ERROR] = "error",
     125             :         [ACCEL_SEQUENCE_STATE_MAX] = "",
     126             : };
     127             : 
     128             : #define ACCEL_SEQUENCE_STATE_STRING(s) \
     129             :         (((s) >= ACCEL_SEQUENCE_STATE_INIT && (s) < ACCEL_SEQUENCE_STATE_MAX) \
     130             :          ? g_seq_states[s] : "unknown")
     131             : 
     132             : struct accel_buffer {
     133             :         struct spdk_accel_sequence      *seq;
     134             :         void                            *buf;
     135             :         uint64_t                        len;
     136             :         struct spdk_iobuf_entry         iobuf;
     137             :         spdk_accel_sequence_get_buf_cb  cb_fn;
     138             :         void                            *cb_ctx;
     139             :         SLIST_ENTRY(accel_buffer)       link;
     140             :         struct accel_io_channel         *ch;
     141             : };
     142             : 
     143             : struct accel_io_channel {
     144             :         struct spdk_io_channel                  *module_ch[SPDK_ACCEL_OPC_LAST];
     145             :         struct spdk_io_channel                  *driver_channel;
     146             :         void                                    *task_pool_base;
     147             :         struct spdk_accel_sequence              *seq_pool_base;
     148             :         struct accel_buffer                     *buf_pool_base;
     149             :         struct spdk_accel_task_aux_data         *task_aux_data_base;
     150             :         STAILQ_HEAD(, spdk_accel_task)          task_pool;
     151             :         SLIST_HEAD(, spdk_accel_task_aux_data)  task_aux_data_pool;
     152             :         SLIST_HEAD(, spdk_accel_sequence)       seq_pool;
     153             :         SLIST_HEAD(, accel_buffer)              buf_pool;
     154             :         struct spdk_iobuf_channel               iobuf;
     155             :         struct accel_stats                      stats;
     156             : };
     157             : 
     158             : TAILQ_HEAD(accel_sequence_tasks, spdk_accel_task);
     159             : 
     160             : struct spdk_accel_sequence {
     161             :         struct accel_io_channel                 *ch;
     162             :         struct accel_sequence_tasks             tasks;
     163             :         SLIST_HEAD(, accel_buffer)              bounce_bufs;
     164             :         int                                     status;
     165             :         /* state uses enum accel_sequence_state */
     166             :         uint8_t                                 state;
     167             :         bool                                    in_process_sequence;
     168             :         spdk_accel_completion_cb                cb_fn;
     169             :         void                                    *cb_arg;
     170             :         SLIST_ENTRY(spdk_accel_sequence)        link;
     171             : };
     172             : SPDK_STATIC_ASSERT(sizeof(struct spdk_accel_sequence) == 64, "invalid size");
     173             : 
     174             : #define accel_update_stats(ch, event, v) \
     175             :         do { \
     176             :                 (ch)->stats.event += (v); \
     177             :         } while (0)
     178             : 
     179             : #define accel_update_task_stats(ch, task, event, v) \
     180             :         accel_update_stats(ch, operations[(task)->op_code].event, v)
     181             : 
     182             : static inline void accel_sequence_task_cb(void *cb_arg, int status);
     183             : 
     184             : static inline void
     185         811 : accel_sequence_set_state(struct spdk_accel_sequence *seq, enum accel_sequence_state state)
     186             : {
     187         811 :         SPDK_DEBUGLOG(accel, "seq=%p, setting state: %s -> %s\n", seq,
     188             :                       ACCEL_SEQUENCE_STATE_STRING(seq->state), ACCEL_SEQUENCE_STATE_STRING(state));
     189         811 :         assert(seq->state != ACCEL_SEQUENCE_STATE_ERROR || state == ACCEL_SEQUENCE_STATE_ERROR);
     190         811 :         seq->state = state;
     191         811 : }
     192             : 
     193             : static void
     194           9 : accel_sequence_set_fail(struct spdk_accel_sequence *seq, int status)
     195             : {
     196           9 :         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_ERROR);
     197           9 :         assert(status != 0);
     198           9 :         seq->status = status;
     199           9 : }
     200             : 
     201             : int
     202          15 : spdk_accel_get_opc_module_name(enum spdk_accel_opcode opcode, const char **module_name)
     203             : {
     204          15 :         if (opcode >= SPDK_ACCEL_OPC_LAST) {
     205             :                 /* invalid opcode */
     206           0 :                 return -EINVAL;
     207             :         }
     208             : 
     209          15 :         if (g_modules_opc[opcode].module) {
     210          15 :                 *module_name = g_modules_opc[opcode].module->name;
     211             :         } else {
     212           0 :                 return -ENOENT;
     213             :         }
     214             : 
     215          15 :         return 0;
     216             : }
     217             : 
     218             : void
     219           0 : _accel_for_each_module(struct module_info *info, _accel_for_each_module_fn fn)
     220             : {
     221             :         struct spdk_accel_module_if *accel_module;
     222             :         enum spdk_accel_opcode opcode;
     223           0 :         int j = 0;
     224             : 
     225           0 :         TAILQ_FOREACH(accel_module, &spdk_accel_module_list, tailq) {
     226           0 :                 for (opcode = 0; opcode < SPDK_ACCEL_OPC_LAST; opcode++) {
     227           0 :                         if (accel_module->supports_opcode(opcode)) {
     228           0 :                                 info->ops[j] = opcode;
     229           0 :                                 j++;
     230             :                         }
     231             :                 }
     232           0 :                 info->name = accel_module->name;
     233           0 :                 info->num_ops = j;
     234           0 :                 fn(info);
     235           0 :                 j = 0;
     236             :         }
     237           0 : }
     238             : 
     239             : const char *
     240           0 : spdk_accel_get_opcode_name(enum spdk_accel_opcode opcode)
     241             : {
     242           0 :         if (opcode < SPDK_ACCEL_OPC_LAST) {
     243           0 :                 return g_opcode_strings[opcode];
     244             :         }
     245             : 
     246           0 :         return NULL;
     247             : }
     248             : 
     249             : int
     250           0 : spdk_accel_assign_opc(enum spdk_accel_opcode opcode, const char *name)
     251             : {
     252             :         char *copy;
     253             : 
     254           0 :         if (g_modules_started == true) {
     255             :                 /* we don't allow re-assignment once things have started */
     256           0 :                 return -EINVAL;
     257             :         }
     258             : 
     259           0 :         if (opcode >= SPDK_ACCEL_OPC_LAST) {
     260             :                 /* invalid opcode */
     261           0 :                 return -EINVAL;
     262             :         }
     263             : 
     264           0 :         copy = strdup(name);
     265           0 :         if (copy == NULL) {
     266           0 :                 return -ENOMEM;
     267             :         }
     268             : 
     269             :         /* module selection will be validated after the framework starts. */
     270           0 :         free(g_modules_opc_override[opcode]);
     271           0 :         g_modules_opc_override[opcode] = copy;
     272             : 
     273           0 :         return 0;
     274             : }
     275             : 
     276             : inline static struct spdk_accel_task *
     277         179 : _get_task(struct accel_io_channel *accel_ch, spdk_accel_completion_cb cb_fn, void *cb_arg)
     278             : {
     279             :         struct spdk_accel_task *accel_task;
     280             : 
     281         179 :         accel_task = STAILQ_FIRST(&accel_ch->task_pool);
     282         179 :         if (spdk_unlikely(accel_task == NULL)) {
     283          11 :                 accel_update_stats(accel_ch, retry.task, 1);
     284          11 :                 return NULL;
     285             :         }
     286             : 
     287         168 :         accel_update_stats(accel_ch, task_outstanding, 1);
     288         168 :         STAILQ_REMOVE_HEAD(&accel_ch->task_pool, link);
     289         168 :         accel_task->link.stqe_next = NULL;
     290             : 
     291         168 :         accel_task->cb_fn = cb_fn;
     292         168 :         accel_task->cb_arg = cb_arg;
     293         168 :         accel_task->accel_ch = accel_ch;
     294         168 :         accel_task->s.iovs = NULL;
     295         168 :         accel_task->d.iovs = NULL;
     296             : 
     297         168 :         return accel_task;
     298             : }
     299             : 
     300             : static void
     301         160 : _put_task(struct accel_io_channel *ch, struct spdk_accel_task *task)
     302             : {
     303         160 :         STAILQ_INSERT_HEAD(&ch->task_pool, task, link);
     304         160 :         accel_update_stats(ch, task_outstanding, -1);
     305         160 : }
     306             : 
     307             : void
     308         112 : spdk_accel_task_complete(struct spdk_accel_task *accel_task, int status)
     309             : {
     310         112 :         struct accel_io_channel         *accel_ch = accel_task->accel_ch;
     311             :         spdk_accel_completion_cb        cb_fn;
     312             :         void                            *cb_arg;
     313             : 
     314         112 :         accel_update_task_stats(accel_ch, accel_task, executed, 1);
     315         112 :         accel_update_task_stats(accel_ch, accel_task, num_bytes, accel_task->nbytes);
     316         112 :         if (spdk_unlikely(status != 0)) {
     317           3 :                 accel_update_task_stats(accel_ch, accel_task, failed, 1);
     318             :         }
     319             : 
     320         112 :         if (accel_task->seq) {
     321         108 :                 accel_sequence_task_cb(accel_task->seq, status);
     322         108 :                 return;
     323             :         }
     324             : 
     325           4 :         cb_fn = accel_task->cb_fn;
     326           4 :         cb_arg = accel_task->cb_arg;
     327             : 
     328           4 :         if (accel_task->has_aux) {
     329           2 :                 SLIST_INSERT_HEAD(&accel_ch->task_aux_data_pool, accel_task->aux, link);
     330           2 :                 accel_task->aux = NULL;
     331           2 :                 accel_task->has_aux = false;
     332             :         }
     333             : 
     334             :         /* We should put the accel_task into the list firstly in order to avoid
     335             :          * the accel task list is exhausted when there is recursive call to
     336             :          * allocate accel_task in user's call back function (cb_fn)
     337             :          */
     338           4 :         _put_task(accel_ch, accel_task);
     339             : 
     340           4 :         cb_fn(cb_arg, status);
     341             : }
     342             : 
     343             : static inline int
     344         109 : accel_submit_task(struct accel_io_channel *accel_ch, struct spdk_accel_task *task)
     345             : {
     346         109 :         struct spdk_io_channel *module_ch = accel_ch->module_ch[task->op_code];
     347         109 :         struct spdk_accel_module_if *module = g_modules_opc[task->op_code].module;
     348             :         int rc;
     349             : 
     350         109 :         rc = module->submit_tasks(module_ch, task);
     351         109 :         if (spdk_unlikely(rc != 0)) {
     352           2 :                 accel_update_task_stats(accel_ch, task, failed, 1);
     353             :         }
     354             : 
     355         109 :         return rc;
     356             : }
     357             : 
     358             : static inline uint64_t
     359         137 : accel_get_iovlen(struct iovec *iovs, uint32_t iovcnt)
     360             : {
     361         137 :         uint64_t result = 0;
     362             :         uint32_t i;
     363             : 
     364         305 :         for (i = 0; i < iovcnt; ++i) {
     365         168 :                 result += iovs[i].iov_len;
     366             :         }
     367             : 
     368         137 :         return result;
     369             : }
     370             : 
     371             : #define ACCEL_TASK_ALLOC_AUX_BUF(task)                                          \
     372             : do {                                                                            \
     373             :         (task)->aux = SLIST_FIRST(&(task)->accel_ch->task_aux_data_pool);  \
     374             :         if (spdk_unlikely(!(task)->aux)) {                                   \
     375             :                 SPDK_ERRLOG("Fatal problem, aux data was not allocated\n");   \
     376             :                 _put_task(task->accel_ch, task);                             \
     377             :                 assert(0);                                                      \
     378             :                 return -ENOMEM;                                                 \
     379             :         }                                                                       \
     380             :         SLIST_REMOVE_HEAD(&(task)->accel_ch->task_aux_data_pool, link);               \
     381             :         (task)->has_aux = true;                                                      \
     382             : } while (0)
     383             : 
     384             : /* Accel framework public API for copy function */
     385             : int
     386           2 : spdk_accel_submit_copy(struct spdk_io_channel *ch, void *dst, void *src,
     387             :                        uint64_t nbytes, spdk_accel_completion_cb cb_fn, void *cb_arg)
     388             : {
     389           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     390             :         struct spdk_accel_task *accel_task;
     391             : 
     392           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     393           2 :         if (spdk_unlikely(accel_task == NULL)) {
     394           1 :                 return -ENOMEM;
     395             :         }
     396             : 
     397           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     398             : 
     399           1 :         accel_task->s.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_SRC];
     400           1 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     401           1 :         accel_task->d.iovs[0].iov_base = dst;
     402           1 :         accel_task->d.iovs[0].iov_len = nbytes;
     403           1 :         accel_task->d.iovcnt = 1;
     404           1 :         accel_task->s.iovs[0].iov_base = src;
     405           1 :         accel_task->s.iovs[0].iov_len = nbytes;
     406           1 :         accel_task->s.iovcnt = 1;
     407           1 :         accel_task->nbytes = nbytes;
     408           1 :         accel_task->op_code = SPDK_ACCEL_OPC_COPY;
     409           1 :         accel_task->src_domain = NULL;
     410           1 :         accel_task->dst_domain = NULL;
     411             : 
     412           1 :         return accel_submit_task(accel_ch, accel_task);
     413             : }
     414             : 
     415             : /* Accel framework public API for dual cast copy function */
     416             : int
     417           4 : spdk_accel_submit_dualcast(struct spdk_io_channel *ch, void *dst1,
     418             :                            void *dst2, void *src, uint64_t nbytes,
     419             :                            spdk_accel_completion_cb cb_fn, void *cb_arg)
     420             : {
     421           4 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     422             :         struct spdk_accel_task *accel_task;
     423             : 
     424           4 :         if ((uintptr_t)dst1 & (ALIGN_4K - 1) || (uintptr_t)dst2 & (ALIGN_4K - 1)) {
     425           2 :                 SPDK_ERRLOG("Dualcast requires 4K alignment on dst addresses\n");
     426           2 :                 return -EINVAL;
     427             :         }
     428             : 
     429           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     430           2 :         if (spdk_unlikely(accel_task == NULL)) {
     431           1 :                 return -ENOMEM;
     432             :         }
     433             : 
     434           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     435             : 
     436           1 :         accel_task->s.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_SRC];
     437           1 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     438           1 :         accel_task->d2.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST2];
     439           1 :         accel_task->d.iovs[0].iov_base = dst1;
     440           1 :         accel_task->d.iovs[0].iov_len = nbytes;
     441           1 :         accel_task->d.iovcnt = 1;
     442           1 :         accel_task->d2.iovs[0].iov_base = dst2;
     443           1 :         accel_task->d2.iovs[0].iov_len = nbytes;
     444           1 :         accel_task->d2.iovcnt = 1;
     445           1 :         accel_task->s.iovs[0].iov_base = src;
     446           1 :         accel_task->s.iovs[0].iov_len = nbytes;
     447           1 :         accel_task->s.iovcnt = 1;
     448           1 :         accel_task->nbytes = nbytes;
     449           1 :         accel_task->op_code = SPDK_ACCEL_OPC_DUALCAST;
     450           1 :         accel_task->src_domain = NULL;
     451           1 :         accel_task->dst_domain = NULL;
     452             : 
     453           1 :         return accel_submit_task(accel_ch, accel_task);
     454             : }
     455             : 
     456             : /* Accel framework public API for compare function */
     457             : 
     458             : int
     459           2 : spdk_accel_submit_compare(struct spdk_io_channel *ch, void *src1,
     460             :                           void *src2, uint64_t nbytes, spdk_accel_completion_cb cb_fn,
     461             :                           void *cb_arg)
     462             : {
     463           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     464             :         struct spdk_accel_task *accel_task;
     465             : 
     466           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     467           2 :         if (spdk_unlikely(accel_task == NULL)) {
     468           1 :                 return -ENOMEM;
     469             :         }
     470             : 
     471           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     472             : 
     473           1 :         accel_task->s.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_SRC];
     474           1 :         accel_task->s2.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_SRC2];
     475           1 :         accel_task->s.iovs[0].iov_base = src1;
     476           1 :         accel_task->s.iovs[0].iov_len = nbytes;
     477           1 :         accel_task->s.iovcnt = 1;
     478           1 :         accel_task->s2.iovs[0].iov_base = src2;
     479           1 :         accel_task->s2.iovs[0].iov_len = nbytes;
     480           1 :         accel_task->s2.iovcnt = 1;
     481           1 :         accel_task->nbytes = nbytes;
     482           1 :         accel_task->op_code = SPDK_ACCEL_OPC_COMPARE;
     483           1 :         accel_task->src_domain = NULL;
     484           1 :         accel_task->dst_domain = NULL;
     485             : 
     486           1 :         return accel_submit_task(accel_ch, accel_task);
     487             : }
     488             : 
     489             : /* Accel framework public API for fill function */
     490             : int
     491           2 : spdk_accel_submit_fill(struct spdk_io_channel *ch, void *dst,
     492             :                        uint8_t fill, uint64_t nbytes,
     493             :                        spdk_accel_completion_cb cb_fn, void *cb_arg)
     494             : {
     495           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     496             :         struct spdk_accel_task *accel_task;
     497             : 
     498           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     499           2 :         if (spdk_unlikely(accel_task == NULL)) {
     500           1 :                 return -ENOMEM;
     501             :         }
     502             : 
     503           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     504             : 
     505           1 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     506           1 :         accel_task->d.iovs[0].iov_base = dst;
     507           1 :         accel_task->d.iovs[0].iov_len = nbytes;
     508           1 :         accel_task->d.iovcnt = 1;
     509           1 :         accel_task->nbytes = nbytes;
     510           1 :         memset(&accel_task->fill_pattern, fill, sizeof(uint64_t));
     511           1 :         accel_task->op_code = SPDK_ACCEL_OPC_FILL;
     512           1 :         accel_task->src_domain = NULL;
     513           1 :         accel_task->dst_domain = NULL;
     514             : 
     515           1 :         return accel_submit_task(accel_ch, accel_task);
     516             : }
     517             : 
     518             : /* Accel framework public API for CRC-32C function */
     519             : int
     520           2 : spdk_accel_submit_crc32c(struct spdk_io_channel *ch, uint32_t *crc_dst,
     521             :                          void *src, uint32_t seed, uint64_t nbytes, spdk_accel_completion_cb cb_fn,
     522             :                          void *cb_arg)
     523             : {
     524           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     525             :         struct spdk_accel_task *accel_task;
     526             : 
     527           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     528           2 :         if (spdk_unlikely(accel_task == NULL)) {
     529           1 :                 return -ENOMEM;
     530             :         }
     531             : 
     532           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     533             : 
     534           1 :         accel_task->s.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_SRC];
     535           1 :         accel_task->s.iovs[0].iov_base = src;
     536           1 :         accel_task->s.iovs[0].iov_len = nbytes;
     537           1 :         accel_task->s.iovcnt = 1;
     538           1 :         accel_task->nbytes = nbytes;
     539           1 :         accel_task->crc_dst = crc_dst;
     540           1 :         accel_task->seed = seed;
     541           1 :         accel_task->op_code = SPDK_ACCEL_OPC_CRC32C;
     542           1 :         accel_task->src_domain = NULL;
     543           1 :         accel_task->dst_domain = NULL;
     544             : 
     545           1 :         return accel_submit_task(accel_ch, accel_task);
     546             : }
     547             : 
     548             : /* Accel framework public API for chained CRC-32C function */
     549             : int
     550           1 : spdk_accel_submit_crc32cv(struct spdk_io_channel *ch, uint32_t *crc_dst,
     551             :                           struct iovec *iov, uint32_t iov_cnt, uint32_t seed,
     552             :                           spdk_accel_completion_cb cb_fn, void *cb_arg)
     553             : {
     554           1 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     555             :         struct spdk_accel_task *accel_task;
     556             : 
     557           1 :         if (iov == NULL) {
     558           0 :                 SPDK_ERRLOG("iov should not be NULL");
     559           0 :                 return -EINVAL;
     560             :         }
     561             : 
     562           1 :         if (!iov_cnt) {
     563           0 :                 SPDK_ERRLOG("iovcnt should not be zero value\n");
     564           0 :                 return -EINVAL;
     565             :         }
     566             : 
     567           1 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     568           1 :         if (spdk_unlikely(accel_task == NULL)) {
     569           0 :                 SPDK_ERRLOG("no memory\n");
     570           0 :                 assert(0);
     571             :                 return -ENOMEM;
     572             :         }
     573             : 
     574           1 :         accel_task->s.iovs = iov;
     575           1 :         accel_task->s.iovcnt = iov_cnt;
     576           1 :         accel_task->nbytes = accel_get_iovlen(iov, iov_cnt);
     577           1 :         accel_task->crc_dst = crc_dst;
     578           1 :         accel_task->seed = seed;
     579           1 :         accel_task->op_code = SPDK_ACCEL_OPC_CRC32C;
     580           1 :         accel_task->src_domain = NULL;
     581           1 :         accel_task->dst_domain = NULL;
     582             : 
     583           1 :         return accel_submit_task(accel_ch, accel_task);
     584             : }
     585             : 
     586             : /* Accel framework public API for copy with CRC-32C function */
     587             : int
     588           2 : spdk_accel_submit_copy_crc32c(struct spdk_io_channel *ch, void *dst,
     589             :                               void *src, uint32_t *crc_dst, uint32_t seed, uint64_t nbytes,
     590             :                               spdk_accel_completion_cb cb_fn, void *cb_arg)
     591             : {
     592           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     593             :         struct spdk_accel_task *accel_task;
     594             : 
     595           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     596           2 :         if (spdk_unlikely(accel_task == NULL)) {
     597           1 :                 return -ENOMEM;
     598             :         }
     599             : 
     600           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     601             : 
     602           1 :         accel_task->s.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_SRC];
     603           1 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     604           1 :         accel_task->d.iovs[0].iov_base = dst;
     605           1 :         accel_task->d.iovs[0].iov_len = nbytes;
     606           1 :         accel_task->d.iovcnt = 1;
     607           1 :         accel_task->s.iovs[0].iov_base = src;
     608           1 :         accel_task->s.iovs[0].iov_len = nbytes;
     609           1 :         accel_task->s.iovcnt = 1;
     610           1 :         accel_task->nbytes = nbytes;
     611           1 :         accel_task->crc_dst = crc_dst;
     612           1 :         accel_task->seed = seed;
     613           1 :         accel_task->op_code = SPDK_ACCEL_OPC_COPY_CRC32C;
     614           1 :         accel_task->src_domain = NULL;
     615           1 :         accel_task->dst_domain = NULL;
     616             : 
     617           1 :         return accel_submit_task(accel_ch, accel_task);
     618             : }
     619             : 
     620             : /* Accel framework public API for chained copy + CRC-32C function */
     621             : int
     622           0 : spdk_accel_submit_copy_crc32cv(struct spdk_io_channel *ch, void *dst,
     623             :                                struct iovec *src_iovs, uint32_t iov_cnt, uint32_t *crc_dst,
     624             :                                uint32_t seed, spdk_accel_completion_cb cb_fn, void *cb_arg)
     625             : {
     626           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     627             :         struct spdk_accel_task *accel_task;
     628             :         uint64_t nbytes;
     629             : 
     630           0 :         if (src_iovs == NULL) {
     631           0 :                 SPDK_ERRLOG("iov should not be NULL");
     632           0 :                 return -EINVAL;
     633             :         }
     634             : 
     635           0 :         if (!iov_cnt) {
     636           0 :                 SPDK_ERRLOG("iovcnt should not be zero value\n");
     637           0 :                 return -EINVAL;
     638             :         }
     639             : 
     640           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     641           0 :         if (spdk_unlikely(accel_task == NULL)) {
     642           0 :                 SPDK_ERRLOG("no memory\n");
     643           0 :                 assert(0);
     644             :                 return -ENOMEM;
     645             :         }
     646             : 
     647           0 :         nbytes = accel_get_iovlen(src_iovs, iov_cnt);
     648             : 
     649           0 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     650             : 
     651           0 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     652           0 :         accel_task->d.iovs[0].iov_base = dst;
     653           0 :         accel_task->d.iovs[0].iov_len = nbytes;
     654           0 :         accel_task->d.iovcnt = 1;
     655           0 :         accel_task->s.iovs = src_iovs;
     656           0 :         accel_task->s.iovcnt = iov_cnt;
     657           0 :         accel_task->nbytes = nbytes;
     658           0 :         accel_task->crc_dst = crc_dst;
     659           0 :         accel_task->seed = seed;
     660           0 :         accel_task->op_code = SPDK_ACCEL_OPC_COPY_CRC32C;
     661           0 :         accel_task->src_domain = NULL;
     662           0 :         accel_task->dst_domain = NULL;
     663             : 
     664           0 :         return accel_submit_task(accel_ch, accel_task);
     665             : }
     666             : 
     667             : int
     668           2 : spdk_accel_submit_compress(struct spdk_io_channel *ch, void *dst, uint64_t nbytes,
     669             :                            struct iovec *src_iovs, size_t src_iovcnt, uint32_t *output_size,
     670             :                            spdk_accel_completion_cb cb_fn, void *cb_arg)
     671             : {
     672           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     673             :         struct spdk_accel_task *accel_task;
     674             : 
     675           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     676           2 :         if (spdk_unlikely(accel_task == NULL)) {
     677           0 :                 return -ENOMEM;
     678             :         }
     679             : 
     680           2 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     681             : 
     682           2 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     683           2 :         accel_task->d.iovs[0].iov_base = dst;
     684           2 :         accel_task->d.iovs[0].iov_len = nbytes;
     685           2 :         accel_task->d.iovcnt = 1;
     686           2 :         accel_task->output_size = output_size;
     687           2 :         accel_task->s.iovs = src_iovs;
     688           2 :         accel_task->s.iovcnt = src_iovcnt;
     689           2 :         accel_task->nbytes = nbytes;
     690           2 :         accel_task->op_code = SPDK_ACCEL_OPC_COMPRESS;
     691           2 :         accel_task->src_domain = NULL;
     692           2 :         accel_task->dst_domain = NULL;
     693             : 
     694           2 :         return accel_submit_task(accel_ch, accel_task);
     695             : }
     696             : 
     697             : int
     698           0 : spdk_accel_submit_decompress(struct spdk_io_channel *ch, struct iovec *dst_iovs,
     699             :                              size_t dst_iovcnt, struct iovec *src_iovs, size_t src_iovcnt,
     700             :                              uint32_t *output_size, spdk_accel_completion_cb cb_fn,
     701             :                              void *cb_arg)
     702             : {
     703           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     704             :         struct spdk_accel_task *accel_task;
     705             : 
     706           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     707           0 :         if (spdk_unlikely(accel_task == NULL)) {
     708           0 :                 return -ENOMEM;
     709             :         }
     710             : 
     711           0 :         accel_task->output_size = output_size;
     712           0 :         accel_task->s.iovs = src_iovs;
     713           0 :         accel_task->s.iovcnt = src_iovcnt;
     714           0 :         accel_task->d.iovs = dst_iovs;
     715           0 :         accel_task->d.iovcnt = dst_iovcnt;
     716           0 :         accel_task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
     717           0 :         accel_task->op_code = SPDK_ACCEL_OPC_DECOMPRESS;
     718           0 :         accel_task->src_domain = NULL;
     719           0 :         accel_task->dst_domain = NULL;
     720             : 
     721           0 :         return accel_submit_task(accel_ch, accel_task);
     722             : }
     723             : 
     724             : int
     725           1 : spdk_accel_submit_encrypt(struct spdk_io_channel *ch, struct spdk_accel_crypto_key *key,
     726             :                           struct iovec *dst_iovs, uint32_t dst_iovcnt,
     727             :                           struct iovec *src_iovs, uint32_t src_iovcnt,
     728             :                           uint64_t iv, uint32_t block_size,
     729             :                           spdk_accel_completion_cb cb_fn, void *cb_arg)
     730             : {
     731           1 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     732             :         struct spdk_accel_task *accel_task;
     733             : 
     734           1 :         if (spdk_unlikely(!dst_iovs || !dst_iovcnt || !src_iovs || !src_iovcnt || !key || !block_size)) {
     735           0 :                 return -EINVAL;
     736             :         }
     737             : 
     738           1 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     739           1 :         if (spdk_unlikely(accel_task == NULL)) {
     740           0 :                 return -ENOMEM;
     741             :         }
     742             : 
     743           1 :         accel_task->crypto_key = key;
     744           1 :         accel_task->s.iovs = src_iovs;
     745           1 :         accel_task->s.iovcnt = src_iovcnt;
     746           1 :         accel_task->d.iovs = dst_iovs;
     747           1 :         accel_task->d.iovcnt = dst_iovcnt;
     748           1 :         accel_task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
     749           1 :         accel_task->iv = iv;
     750           1 :         accel_task->block_size = block_size;
     751           1 :         accel_task->op_code = SPDK_ACCEL_OPC_ENCRYPT;
     752           1 :         accel_task->src_domain = NULL;
     753           1 :         accel_task->dst_domain = NULL;
     754             : 
     755           1 :         return accel_submit_task(accel_ch, accel_task);
     756             : }
     757             : 
     758             : int
     759           0 : spdk_accel_submit_decrypt(struct spdk_io_channel *ch, struct spdk_accel_crypto_key *key,
     760             :                           struct iovec *dst_iovs, uint32_t dst_iovcnt,
     761             :                           struct iovec *src_iovs, uint32_t src_iovcnt,
     762             :                           uint64_t iv, uint32_t block_size,
     763             :                           spdk_accel_completion_cb cb_fn, void *cb_arg)
     764             : {
     765           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     766             :         struct spdk_accel_task *accel_task;
     767             : 
     768           0 :         if (spdk_unlikely(!dst_iovs || !dst_iovcnt || !src_iovs || !src_iovcnt || !key || !block_size)) {
     769           0 :                 return -EINVAL;
     770             :         }
     771             : 
     772           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     773           0 :         if (spdk_unlikely(accel_task == NULL)) {
     774           0 :                 return -ENOMEM;
     775             :         }
     776             : 
     777           0 :         accel_task->crypto_key = key;
     778           0 :         accel_task->s.iovs = src_iovs;
     779           0 :         accel_task->s.iovcnt = src_iovcnt;
     780           0 :         accel_task->d.iovs = dst_iovs;
     781           0 :         accel_task->d.iovcnt = dst_iovcnt;
     782           0 :         accel_task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
     783           0 :         accel_task->iv = iv;
     784           0 :         accel_task->block_size = block_size;
     785           0 :         accel_task->op_code = SPDK_ACCEL_OPC_DECRYPT;
     786           0 :         accel_task->src_domain = NULL;
     787           0 :         accel_task->dst_domain = NULL;
     788             : 
     789           0 :         return accel_submit_task(accel_ch, accel_task);
     790             : }
     791             : 
     792             : int
     793           2 : spdk_accel_submit_xor(struct spdk_io_channel *ch, void *dst, void **sources, uint32_t nsrcs,
     794             :                       uint64_t nbytes, spdk_accel_completion_cb cb_fn, void *cb_arg)
     795             : {
     796           2 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     797             :         struct spdk_accel_task *accel_task;
     798             : 
     799           2 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     800           2 :         if (spdk_unlikely(accel_task == NULL)) {
     801           1 :                 return -ENOMEM;
     802             :         }
     803             : 
     804           1 :         ACCEL_TASK_ALLOC_AUX_BUF(accel_task);
     805             : 
     806           1 :         accel_task->d.iovs = &accel_task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
     807           1 :         accel_task->nsrcs.srcs = sources;
     808           1 :         accel_task->nsrcs.cnt = nsrcs;
     809           1 :         accel_task->d.iovs[0].iov_base = dst;
     810           1 :         accel_task->d.iovs[0].iov_len = nbytes;
     811           1 :         accel_task->d.iovcnt = 1;
     812           1 :         accel_task->nbytes = nbytes;
     813           1 :         accel_task->op_code = SPDK_ACCEL_OPC_XOR;
     814           1 :         accel_task->src_domain = NULL;
     815           1 :         accel_task->dst_domain = NULL;
     816             : 
     817           1 :         return accel_submit_task(accel_ch, accel_task);
     818             : }
     819             : 
     820             : int
     821           0 : spdk_accel_submit_dif_verify(struct spdk_io_channel *ch,
     822             :                              struct iovec *iovs, size_t iovcnt, uint32_t num_blocks,
     823             :                              const struct spdk_dif_ctx *ctx, struct spdk_dif_error *err,
     824             :                              spdk_accel_completion_cb cb_fn, void *cb_arg)
     825             : {
     826           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     827             :         struct spdk_accel_task *accel_task;
     828             : 
     829           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     830           0 :         if (accel_task == NULL) {
     831           0 :                 return -ENOMEM;
     832             :         }
     833             : 
     834           0 :         accel_task->s.iovs = iovs;
     835           0 :         accel_task->s.iovcnt = iovcnt;
     836           0 :         accel_task->dif.ctx = ctx;
     837           0 :         accel_task->dif.err = err;
     838           0 :         accel_task->dif.num_blocks = num_blocks;
     839           0 :         accel_task->nbytes = num_blocks * ctx->block_size;
     840           0 :         accel_task->op_code = SPDK_ACCEL_OPC_DIF_VERIFY;
     841           0 :         accel_task->src_domain = NULL;
     842           0 :         accel_task->dst_domain = NULL;
     843             : 
     844           0 :         return accel_submit_task(accel_ch, accel_task);
     845             : }
     846             : 
     847             : int
     848           0 : spdk_accel_submit_dif_generate(struct spdk_io_channel *ch,
     849             :                                struct iovec *iovs, size_t iovcnt, uint32_t num_blocks,
     850             :                                const struct spdk_dif_ctx *ctx,
     851             :                                spdk_accel_completion_cb cb_fn, void *cb_arg)
     852             : {
     853           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     854             :         struct spdk_accel_task *accel_task;
     855             : 
     856           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     857           0 :         if (accel_task == NULL) {
     858           0 :                 return -ENOMEM;
     859             :         }
     860             : 
     861           0 :         accel_task->s.iovs = iovs;
     862           0 :         accel_task->s.iovcnt = iovcnt;
     863           0 :         accel_task->dif.ctx = ctx;
     864           0 :         accel_task->dif.num_blocks = num_blocks;
     865           0 :         accel_task->nbytes = num_blocks * ctx->block_size;
     866           0 :         accel_task->op_code = SPDK_ACCEL_OPC_DIF_GENERATE;
     867           0 :         accel_task->src_domain = NULL;
     868           0 :         accel_task->dst_domain = NULL;
     869             : 
     870           0 :         return accel_submit_task(accel_ch, accel_task);
     871             : }
     872             : 
     873             : int
     874           0 : spdk_accel_submit_dif_generate_copy(struct spdk_io_channel *ch, struct iovec *dst_iovs,
     875             :                                     size_t dst_iovcnt, struct iovec *src_iovs, size_t src_iovcnt,
     876             :                                     uint32_t num_blocks, const struct spdk_dif_ctx *ctx,
     877             :                                     spdk_accel_completion_cb cb_fn, void *cb_arg)
     878             : {
     879           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     880             :         struct spdk_accel_task *accel_task;
     881             : 
     882           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     883           0 :         if (accel_task == NULL) {
     884           0 :                 return -ENOMEM;
     885             :         }
     886             : 
     887           0 :         accel_task->s.iovs = src_iovs;
     888           0 :         accel_task->s.iovcnt = src_iovcnt;
     889           0 :         accel_task->d.iovs = dst_iovs;
     890           0 :         accel_task->d.iovcnt = dst_iovcnt;
     891           0 :         accel_task->dif.ctx = ctx;
     892           0 :         accel_task->dif.num_blocks = num_blocks;
     893           0 :         accel_task->nbytes = num_blocks * ctx->block_size;
     894           0 :         accel_task->op_code = SPDK_ACCEL_OPC_DIF_GENERATE_COPY;
     895           0 :         accel_task->src_domain = NULL;
     896           0 :         accel_task->dst_domain = NULL;
     897             : 
     898           0 :         return accel_submit_task(accel_ch, accel_task);
     899             : }
     900             : 
     901             : int
     902           0 : spdk_accel_submit_dif_verify_copy(struct spdk_io_channel *ch,
     903             :                                   struct iovec *dst_iovs, size_t dst_iovcnt,
     904             :                                   struct iovec *src_iovs, size_t src_iovcnt, uint32_t num_blocks,
     905             :                                   const struct spdk_dif_ctx *ctx, struct spdk_dif_error *err,
     906             :                                   spdk_accel_completion_cb cb_fn, void *cb_arg)
     907             : {
     908           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
     909             :         struct spdk_accel_task *accel_task;
     910             : 
     911           0 :         accel_task = _get_task(accel_ch, cb_fn, cb_arg);
     912           0 :         if (accel_task == NULL) {
     913           0 :                 return -ENOMEM;
     914             :         }
     915             : 
     916           0 :         accel_task->s.iovs = src_iovs;
     917           0 :         accel_task->s.iovcnt = src_iovcnt;
     918           0 :         accel_task->d.iovs = dst_iovs;
     919           0 :         accel_task->d.iovcnt = dst_iovcnt;
     920           0 :         accel_task->dif.ctx = ctx;
     921           0 :         accel_task->dif.err = err;
     922           0 :         accel_task->dif.num_blocks = num_blocks;
     923           0 :         accel_task->nbytes = num_blocks * ctx->block_size;
     924           0 :         accel_task->op_code = SPDK_ACCEL_OPC_DIF_VERIFY_COPY;
     925           0 :         accel_task->src_domain = NULL;
     926           0 :         accel_task->dst_domain = NULL;
     927             : 
     928           0 :         return accel_submit_task(accel_ch, accel_task);
     929             : }
     930             : 
     931             : static inline struct accel_buffer *
     932          33 : accel_get_buf(struct accel_io_channel *ch, uint64_t len)
     933             : {
     934             :         struct accel_buffer *buf;
     935             : 
     936          33 :         buf = SLIST_FIRST(&ch->buf_pool);
     937          33 :         if (spdk_unlikely(buf == NULL)) {
     938           0 :                 accel_update_stats(ch, retry.bufdesc, 1);
     939           0 :                 return NULL;
     940             :         }
     941             : 
     942          33 :         SLIST_REMOVE_HEAD(&ch->buf_pool, link);
     943          33 :         buf->len = len;
     944          33 :         buf->buf = NULL;
     945          33 :         buf->seq = NULL;
     946          33 :         buf->cb_fn = NULL;
     947             : 
     948          33 :         return buf;
     949             : }
     950             : 
     951             : static inline void
     952          33 : accel_put_buf(struct accel_io_channel *ch, struct accel_buffer *buf)
     953             : {
     954          33 :         if (buf->buf != NULL) {
     955          29 :                 spdk_iobuf_put(&ch->iobuf, buf->buf, buf->len);
     956             :         }
     957             : 
     958          33 :         SLIST_INSERT_HEAD(&ch->buf_pool, buf, link);
     959          33 : }
     960             : 
     961             : static inline struct spdk_accel_sequence *
     962          70 : accel_sequence_get(struct accel_io_channel *ch)
     963             : {
     964             :         struct spdk_accel_sequence *seq;
     965             : 
     966          70 :         assert(g_opts.task_count >= ch->stats.task_outstanding);
     967             : 
     968             :         /* Sequence cannot be allocated if number of available task objects cannot satisfy required limit.
     969             :          * This is to prevent potential dead lock when few requests are pending task resource and none can
     970             :          * advance the processing. This solution should work only if there is single async operation after
     971             :          * sequence obj obtained, so assume that is possible to happen with io buffer allocation now, if
     972             :          * there are more async operations then solution should be improved. */
     973          70 :         if (spdk_unlikely(g_opts.task_count - ch->stats.task_outstanding < ACCEL_TASKS_IN_SEQUENCE_LIMIT)) {
     974           0 :                 return NULL;
     975             :         }
     976             : 
     977          70 :         seq = SLIST_FIRST(&ch->seq_pool);
     978          70 :         if (spdk_unlikely(seq == NULL)) {
     979           3 :                 accel_update_stats(ch, retry.sequence, 1);
     980           3 :                 return NULL;
     981             :         }
     982             : 
     983          67 :         accel_update_stats(ch, sequence_outstanding, 1);
     984          67 :         SLIST_REMOVE_HEAD(&ch->seq_pool, link);
     985             : 
     986          67 :         TAILQ_INIT(&seq->tasks);
     987          67 :         SLIST_INIT(&seq->bounce_bufs);
     988             : 
     989          67 :         seq->ch = ch;
     990          67 :         seq->status = 0;
     991          67 :         seq->state = ACCEL_SEQUENCE_STATE_INIT;
     992          67 :         seq->in_process_sequence = false;
     993             : 
     994          67 :         return seq;
     995             : }
     996             : 
     997             : static inline void
     998          67 : accel_sequence_put(struct spdk_accel_sequence *seq)
     999             : {
    1000          67 :         struct accel_io_channel *ch = seq->ch;
    1001             :         struct accel_buffer *buf;
    1002             : 
    1003          86 :         while (!SLIST_EMPTY(&seq->bounce_bufs)) {
    1004          19 :                 buf = SLIST_FIRST(&seq->bounce_bufs);
    1005          19 :                 SLIST_REMOVE_HEAD(&seq->bounce_bufs, link);
    1006          19 :                 accel_put_buf(seq->ch, buf);
    1007             :         }
    1008             : 
    1009          67 :         assert(TAILQ_EMPTY(&seq->tasks));
    1010          67 :         seq->ch = NULL;
    1011             : 
    1012          67 :         SLIST_INSERT_HEAD(&ch->seq_pool, seq, link);
    1013          67 :         accel_update_stats(ch, sequence_outstanding, -1);
    1014          67 : }
    1015             : 
    1016             : static void accel_sequence_task_cb(void *cb_arg, int status);
    1017             : 
    1018             : static inline struct spdk_accel_task *
    1019         159 : accel_sequence_get_task(struct accel_io_channel *ch, struct spdk_accel_sequence *seq,
    1020             :                         spdk_accel_step_cb cb_fn, void *cb_arg)
    1021             : {
    1022             :         struct spdk_accel_task *task;
    1023             : 
    1024         159 :         task = _get_task(ch, NULL, NULL);
    1025         159 :         if (spdk_unlikely(task == NULL)) {
    1026           3 :                 return task;
    1027             :         }
    1028             : 
    1029         156 :         task->step_cb_fn = cb_fn;
    1030         156 :         task->cb_arg = cb_arg;
    1031         156 :         task->seq = seq;
    1032             : 
    1033         156 :         return task;
    1034             : }
    1035             : 
    1036             : int
    1037          46 : spdk_accel_append_copy(struct spdk_accel_sequence **pseq, struct spdk_io_channel *ch,
    1038             :                        struct iovec *dst_iovs, uint32_t dst_iovcnt,
    1039             :                        struct spdk_memory_domain *dst_domain, void *dst_domain_ctx,
    1040             :                        struct iovec *src_iovs, uint32_t src_iovcnt,
    1041             :                        struct spdk_memory_domain *src_domain, void *src_domain_ctx,
    1042             :                        spdk_accel_step_cb cb_fn, void *cb_arg)
    1043             : {
    1044          46 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1045             :         struct spdk_accel_task *task;
    1046          46 :         struct spdk_accel_sequence *seq = *pseq;
    1047             : 
    1048          46 :         if (seq == NULL) {
    1049          17 :                 seq = accel_sequence_get(accel_ch);
    1050          17 :                 if (spdk_unlikely(seq == NULL)) {
    1051           1 :                         return -ENOMEM;
    1052             :                 }
    1053             :         }
    1054             : 
    1055          45 :         assert(seq->ch == accel_ch);
    1056          45 :         task = accel_sequence_get_task(accel_ch, seq, cb_fn, cb_arg);
    1057          45 :         if (spdk_unlikely(task == NULL)) {
    1058           1 :                 if (*pseq == NULL) {
    1059           1 :                         accel_sequence_put(seq);
    1060             :                 }
    1061             : 
    1062           1 :                 return -ENOMEM;
    1063             :         }
    1064             : 
    1065          44 :         task->dst_domain = dst_domain;
    1066          44 :         task->dst_domain_ctx = dst_domain_ctx;
    1067          44 :         task->d.iovs = dst_iovs;
    1068          44 :         task->d.iovcnt = dst_iovcnt;
    1069          44 :         task->src_domain = src_domain;
    1070          44 :         task->src_domain_ctx = src_domain_ctx;
    1071          44 :         task->s.iovs = src_iovs;
    1072          44 :         task->s.iovcnt = src_iovcnt;
    1073          44 :         task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
    1074          44 :         task->op_code = SPDK_ACCEL_OPC_COPY;
    1075             : 
    1076          44 :         TAILQ_INSERT_TAIL(&seq->tasks, task, seq_link);
    1077          44 :         *pseq = seq;
    1078             : 
    1079          44 :         return 0;
    1080             : }
    1081             : 
    1082             : int
    1083          42 : spdk_accel_append_fill(struct spdk_accel_sequence **pseq, struct spdk_io_channel *ch,
    1084             :                        void *buf, uint64_t len,
    1085             :                        struct spdk_memory_domain *domain, void *domain_ctx, uint8_t pattern,
    1086             :                        spdk_accel_step_cb cb_fn, void *cb_arg)
    1087             : {
    1088          42 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1089             :         struct spdk_accel_task *task;
    1090          42 :         struct spdk_accel_sequence *seq = *pseq;
    1091             : 
    1092          42 :         if (seq == NULL) {
    1093          24 :                 seq = accel_sequence_get(accel_ch);
    1094          24 :                 if (spdk_unlikely(seq == NULL)) {
    1095           1 :                         return -ENOMEM;
    1096             :                 }
    1097             :         }
    1098             : 
    1099          41 :         assert(seq->ch == accel_ch);
    1100          41 :         task = accel_sequence_get_task(accel_ch, seq, cb_fn, cb_arg);
    1101          41 :         if (spdk_unlikely(task == NULL)) {
    1102           1 :                 if (*pseq == NULL) {
    1103           1 :                         accel_sequence_put(seq);
    1104             :                 }
    1105             : 
    1106           1 :                 return -ENOMEM;
    1107             :         }
    1108             : 
    1109          40 :         memset(&task->fill_pattern, pattern, sizeof(uint64_t));
    1110             : 
    1111          40 :         task->aux = SLIST_FIRST(&task->accel_ch->task_aux_data_pool);
    1112          40 :         if (spdk_unlikely(!task->aux)) {
    1113           0 :                 SPDK_ERRLOG("Fatal problem, aux data was not allocated\n");
    1114           0 :                 if (*pseq == NULL) {
    1115           0 :                         accel_sequence_put((seq));
    1116             :                 }
    1117             : 
    1118           0 :                 task->seq = NULL;
    1119           0 :                 _put_task(task->accel_ch, task);
    1120           0 :                 assert(0);
    1121             :                 return -ENOMEM;
    1122             :         }
    1123          40 :         SLIST_REMOVE_HEAD(&task->accel_ch->task_aux_data_pool, link);
    1124          40 :         task->has_aux = true;
    1125             : 
    1126          40 :         task->d.iovs = &task->aux->iovs[SPDK_ACCEL_AUX_IOV_DST];
    1127          40 :         task->d.iovs[0].iov_base = buf;
    1128          40 :         task->d.iovs[0].iov_len = len;
    1129          40 :         task->d.iovcnt = 1;
    1130          40 :         task->nbytes = len;
    1131          40 :         task->src_domain = NULL;
    1132          40 :         task->dst_domain = domain;
    1133          40 :         task->dst_domain_ctx = domain_ctx;
    1134          40 :         task->op_code = SPDK_ACCEL_OPC_FILL;
    1135             : 
    1136          40 :         TAILQ_INSERT_TAIL(&seq->tasks, task, seq_link);
    1137          40 :         *pseq = seq;
    1138             : 
    1139          40 :         return 0;
    1140             : }
    1141             : 
    1142             : int
    1143          47 : spdk_accel_append_decompress(struct spdk_accel_sequence **pseq, struct spdk_io_channel *ch,
    1144             :                              struct iovec *dst_iovs, size_t dst_iovcnt,
    1145             :                              struct spdk_memory_domain *dst_domain, void *dst_domain_ctx,
    1146             :                              struct iovec *src_iovs, size_t src_iovcnt,
    1147             :                              struct spdk_memory_domain *src_domain, void *src_domain_ctx,
    1148             :                              spdk_accel_step_cb cb_fn, void *cb_arg)
    1149             : {
    1150          47 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1151             :         struct spdk_accel_task *task;
    1152          47 :         struct spdk_accel_sequence *seq = *pseq;
    1153             : 
    1154          47 :         if (seq == NULL) {
    1155          21 :                 seq = accel_sequence_get(accel_ch);
    1156          21 :                 if (spdk_unlikely(seq == NULL)) {
    1157           1 :                         return -ENOMEM;
    1158             :                 }
    1159             :         }
    1160             : 
    1161          46 :         assert(seq->ch == accel_ch);
    1162          46 :         task = accel_sequence_get_task(accel_ch, seq, cb_fn, cb_arg);
    1163          46 :         if (spdk_unlikely(task == NULL)) {
    1164           1 :                 if (*pseq == NULL) {
    1165           1 :                         accel_sequence_put(seq);
    1166             :                 }
    1167             : 
    1168           1 :                 return -ENOMEM;
    1169             :         }
    1170             : 
    1171             :         /* TODO: support output_size for chaining */
    1172          45 :         task->output_size = NULL;
    1173          45 :         task->dst_domain = dst_domain;
    1174          45 :         task->dst_domain_ctx = dst_domain_ctx;
    1175          45 :         task->d.iovs = dst_iovs;
    1176          45 :         task->d.iovcnt = dst_iovcnt;
    1177          45 :         task->src_domain = src_domain;
    1178          45 :         task->src_domain_ctx = src_domain_ctx;
    1179          45 :         task->s.iovs = src_iovs;
    1180          45 :         task->s.iovcnt = src_iovcnt;
    1181          45 :         task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
    1182          45 :         task->op_code = SPDK_ACCEL_OPC_DECOMPRESS;
    1183             : 
    1184          45 :         TAILQ_INSERT_TAIL(&seq->tasks, task, seq_link);
    1185          45 :         *pseq = seq;
    1186             : 
    1187          45 :         return 0;
    1188             : }
    1189             : 
    1190             : int
    1191          10 : spdk_accel_append_encrypt(struct spdk_accel_sequence **pseq, struct spdk_io_channel *ch,
    1192             :                           struct spdk_accel_crypto_key *key,
    1193             :                           struct iovec *dst_iovs, uint32_t dst_iovcnt,
    1194             :                           struct spdk_memory_domain *dst_domain, void *dst_domain_ctx,
    1195             :                           struct iovec *src_iovs, uint32_t src_iovcnt,
    1196             :                           struct spdk_memory_domain *src_domain, void *src_domain_ctx,
    1197             :                           uint64_t iv, uint32_t block_size,
    1198             :                           spdk_accel_step_cb cb_fn, void *cb_arg)
    1199             : {
    1200          10 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1201             :         struct spdk_accel_task *task;
    1202          10 :         struct spdk_accel_sequence *seq = *pseq;
    1203             : 
    1204          10 :         assert(dst_iovs && dst_iovcnt && src_iovs && src_iovcnt && key && block_size);
    1205             : 
    1206          10 :         if (seq == NULL) {
    1207           6 :                 seq = accel_sequence_get(accel_ch);
    1208           6 :                 if (spdk_unlikely(seq == NULL)) {
    1209           0 :                         return -ENOMEM;
    1210             :                 }
    1211             :         }
    1212             : 
    1213          10 :         assert(seq->ch == accel_ch);
    1214          10 :         task = accel_sequence_get_task(accel_ch, seq, cb_fn, cb_arg);
    1215          10 :         if (spdk_unlikely(task == NULL)) {
    1216           0 :                 if (*pseq == NULL) {
    1217           0 :                         accel_sequence_put(seq);
    1218             :                 }
    1219             : 
    1220           0 :                 return -ENOMEM;
    1221             :         }
    1222             : 
    1223          10 :         task->crypto_key = key;
    1224          10 :         task->src_domain = src_domain;
    1225          10 :         task->src_domain_ctx = src_domain_ctx;
    1226          10 :         task->s.iovs = src_iovs;
    1227          10 :         task->s.iovcnt = src_iovcnt;
    1228          10 :         task->dst_domain = dst_domain;
    1229          10 :         task->dst_domain_ctx = dst_domain_ctx;
    1230          10 :         task->d.iovs = dst_iovs;
    1231          10 :         task->d.iovcnt = dst_iovcnt;
    1232          10 :         task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
    1233          10 :         task->iv = iv;
    1234          10 :         task->block_size = block_size;
    1235          10 :         task->op_code = SPDK_ACCEL_OPC_ENCRYPT;
    1236             : 
    1237          10 :         TAILQ_INSERT_TAIL(&seq->tasks, task, seq_link);
    1238          10 :         *pseq = seq;
    1239             : 
    1240          10 :         return 0;
    1241             : }
    1242             : 
    1243             : int
    1244          11 : spdk_accel_append_decrypt(struct spdk_accel_sequence **pseq, struct spdk_io_channel *ch,
    1245             :                           struct spdk_accel_crypto_key *key,
    1246             :                           struct iovec *dst_iovs, uint32_t dst_iovcnt,
    1247             :                           struct spdk_memory_domain *dst_domain, void *dst_domain_ctx,
    1248             :                           struct iovec *src_iovs, uint32_t src_iovcnt,
    1249             :                           struct spdk_memory_domain *src_domain, void *src_domain_ctx,
    1250             :                           uint64_t iv, uint32_t block_size,
    1251             :                           spdk_accel_step_cb cb_fn, void *cb_arg)
    1252             : {
    1253          11 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1254             :         struct spdk_accel_task *task;
    1255          11 :         struct spdk_accel_sequence *seq = *pseq;
    1256             : 
    1257          11 :         assert(dst_iovs && dst_iovcnt && src_iovs && src_iovcnt && key && block_size);
    1258             : 
    1259          11 :         if (seq == NULL) {
    1260           0 :                 seq = accel_sequence_get(accel_ch);
    1261           0 :                 if (spdk_unlikely(seq == NULL)) {
    1262           0 :                         return -ENOMEM;
    1263             :                 }
    1264             :         }
    1265             : 
    1266          11 :         assert(seq->ch == accel_ch);
    1267          11 :         task = accel_sequence_get_task(accel_ch, seq, cb_fn, cb_arg);
    1268          11 :         if (spdk_unlikely(task == NULL)) {
    1269           0 :                 if (*pseq == NULL) {
    1270           0 :                         accel_sequence_put(seq);
    1271             :                 }
    1272             : 
    1273           0 :                 return -ENOMEM;
    1274             :         }
    1275             : 
    1276          11 :         task->crypto_key = key;
    1277          11 :         task->src_domain = src_domain;
    1278          11 :         task->src_domain_ctx = src_domain_ctx;
    1279          11 :         task->s.iovs = src_iovs;
    1280          11 :         task->s.iovcnt = src_iovcnt;
    1281          11 :         task->dst_domain = dst_domain;
    1282          11 :         task->dst_domain_ctx = dst_domain_ctx;
    1283          11 :         task->d.iovs = dst_iovs;
    1284          11 :         task->d.iovcnt = dst_iovcnt;
    1285          11 :         task->nbytes = accel_get_iovlen(src_iovs, src_iovcnt);
    1286          11 :         task->iv = iv;
    1287          11 :         task->block_size = block_size;
    1288          11 :         task->op_code = SPDK_ACCEL_OPC_DECRYPT;
    1289             : 
    1290          11 :         TAILQ_INSERT_TAIL(&seq->tasks, task, seq_link);
    1291          11 :         *pseq = seq;
    1292             : 
    1293          11 :         return 0;
    1294             : }
    1295             : 
    1296             : int
    1297           6 : spdk_accel_append_crc32c(struct spdk_accel_sequence **pseq, struct spdk_io_channel *ch,
    1298             :                          uint32_t *dst, struct iovec *iovs, uint32_t iovcnt,
    1299             :                          struct spdk_memory_domain *domain, void *domain_ctx,
    1300             :                          uint32_t seed, spdk_accel_step_cb cb_fn, void *cb_arg)
    1301             : {
    1302           6 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1303             :         struct spdk_accel_task *task;
    1304           6 :         struct spdk_accel_sequence *seq = *pseq;
    1305             : 
    1306           6 :         if (seq == NULL) {
    1307           2 :                 seq = accel_sequence_get(accel_ch);
    1308           2 :                 if (spdk_unlikely(seq == NULL)) {
    1309           0 :                         return -ENOMEM;
    1310             :                 }
    1311             :         }
    1312             : 
    1313           6 :         assert(seq->ch == accel_ch);
    1314           6 :         task = accel_sequence_get_task(accel_ch, seq, cb_fn, cb_arg);
    1315           6 :         if (spdk_unlikely(task == NULL)) {
    1316           0 :                 if (*pseq == NULL) {
    1317           0 :                         accel_sequence_put(seq);
    1318             :                 }
    1319             : 
    1320           0 :                 return -ENOMEM;
    1321             :         }
    1322             : 
    1323           6 :         task->s.iovs = iovs;
    1324           6 :         task->s.iovcnt = iovcnt;
    1325           6 :         task->src_domain = domain;
    1326           6 :         task->src_domain_ctx = domain_ctx;
    1327           6 :         task->nbytes = accel_get_iovlen(iovs, iovcnt);
    1328           6 :         task->crc_dst = dst;
    1329           6 :         task->seed = seed;
    1330           6 :         task->op_code = SPDK_ACCEL_OPC_CRC32C;
    1331           6 :         task->dst_domain = NULL;
    1332             : 
    1333           6 :         TAILQ_INSERT_TAIL(&seq->tasks, task, seq_link);
    1334           6 :         *pseq = seq;
    1335             : 
    1336           6 :         return 0;
    1337             : }
    1338             : 
    1339             : int
    1340          14 : spdk_accel_get_buf(struct spdk_io_channel *ch, uint64_t len, void **buf,
    1341             :                    struct spdk_memory_domain **domain, void **domain_ctx)
    1342             : {
    1343          14 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1344             :         struct accel_buffer *accel_buf;
    1345             : 
    1346          14 :         accel_buf = accel_get_buf(accel_ch, len);
    1347          14 :         if (spdk_unlikely(accel_buf == NULL)) {
    1348           0 :                 return -ENOMEM;
    1349             :         }
    1350             : 
    1351          14 :         accel_buf->ch = accel_ch;
    1352             : 
    1353             :         /* We always return the same pointer and identify the buffers through domain_ctx */
    1354          14 :         *buf = ACCEL_BUFFER_BASE;
    1355          14 :         *domain_ctx = accel_buf;
    1356          14 :         *domain = g_accel_domain;
    1357             : 
    1358          14 :         return 0;
    1359             : }
    1360             : 
    1361             : void
    1362          14 : spdk_accel_put_buf(struct spdk_io_channel *ch, void *buf,
    1363             :                    struct spdk_memory_domain *domain, void *domain_ctx)
    1364             : {
    1365          14 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    1366          14 :         struct accel_buffer *accel_buf = domain_ctx;
    1367             : 
    1368          14 :         assert(domain == g_accel_domain);
    1369          14 :         assert(buf == ACCEL_BUFFER_BASE);
    1370             : 
    1371          14 :         accel_put_buf(accel_ch, accel_buf);
    1372          14 : }
    1373             : 
    1374             : static void
    1375         156 : accel_sequence_complete_task(struct spdk_accel_sequence *seq, struct spdk_accel_task *task)
    1376             : {
    1377         156 :         struct accel_io_channel *ch = seq->ch;
    1378             :         spdk_accel_step_cb cb_fn;
    1379             :         void *cb_arg;
    1380             : 
    1381         156 :         TAILQ_REMOVE(&seq->tasks, task, seq_link);
    1382         156 :         cb_fn = task->step_cb_fn;
    1383         156 :         cb_arg = task->cb_arg;
    1384         156 :         task->seq = NULL;
    1385         156 :         if (task->has_aux) {
    1386          61 :                 SLIST_INSERT_HEAD(&ch->task_aux_data_pool, task->aux, link);
    1387          61 :                 task->aux = NULL;
    1388          61 :                 task->has_aux = false;
    1389             :         }
    1390             : 
    1391         156 :         _put_task(ch, task);
    1392             : 
    1393         156 :         if (cb_fn != NULL) {
    1394         156 :                 cb_fn(cb_arg);
    1395             :         }
    1396         156 : }
    1397             : 
    1398             : static void
    1399          64 : accel_sequence_complete_tasks(struct spdk_accel_sequence *seq)
    1400             : {
    1401             :         struct spdk_accel_task *task;
    1402             : 
    1403          82 :         while (!TAILQ_EMPTY(&seq->tasks)) {
    1404          18 :                 task = TAILQ_FIRST(&seq->tasks);
    1405          18 :                 accel_sequence_complete_task(seq, task);
    1406             :         }
    1407          64 : }
    1408             : 
    1409             : static void
    1410          62 : accel_sequence_complete(struct spdk_accel_sequence *seq)
    1411             : {
    1412          62 :         spdk_accel_completion_cb cb_fn = seq->cb_fn;
    1413          62 :         void *cb_arg = seq->cb_arg;
    1414          62 :         int status = seq->status;
    1415             : 
    1416          62 :         SPDK_DEBUGLOG(accel, "Completed sequence: %p with status: %d\n", seq, status);
    1417             : 
    1418          62 :         accel_update_stats(seq->ch, sequence_executed, 1);
    1419          62 :         if (spdk_unlikely(status != 0)) {
    1420          10 :                 accel_update_stats(seq->ch, sequence_failed, 1);
    1421             :         }
    1422             : 
    1423             :         /* First notify all users that appended operations to this sequence */
    1424          62 :         accel_sequence_complete_tasks(seq);
    1425          62 :         accel_sequence_put(seq);
    1426             : 
    1427             :         /* Then notify the user that finished the sequence */
    1428          62 :         cb_fn(cb_arg, status);
    1429          62 : }
    1430             : 
    1431             : static void
    1432          28 : accel_update_virt_iov(struct iovec *diov, struct iovec *siov, struct accel_buffer *accel_buf)
    1433             : {
    1434             :         uintptr_t offset;
    1435             : 
    1436          28 :         offset = (uintptr_t)siov->iov_base & ACCEL_BUFFER_OFFSET_MASK;
    1437          28 :         assert(offset < accel_buf->len);
    1438             : 
    1439          28 :         diov->iov_base = (char *)accel_buf->buf + offset;
    1440          28 :         diov->iov_len = siov->iov_len;
    1441          28 : }
    1442             : 
    1443             : static void
    1444          10 : accel_sequence_set_virtbuf(struct spdk_accel_sequence *seq, struct accel_buffer *buf)
    1445             : {
    1446             :         struct spdk_accel_task *task;
    1447             :         struct iovec *iov;
    1448             : 
    1449             :         /* Now that we've allocated the actual data buffer for this accel_buffer, update all tasks
    1450             :          * in a sequence that were using it.
    1451             :          */
    1452          38 :         TAILQ_FOREACH(task, &seq->tasks, seq_link) {
    1453          28 :                 if (task->src_domain == g_accel_domain && task->src_domain_ctx == buf) {
    1454          11 :                         if (!task->has_aux) {
    1455          11 :                                 task->aux = SLIST_FIRST(&task->accel_ch->task_aux_data_pool);
    1456          11 :                                 assert(task->aux && "Can't allocate aux data structure");
    1457          11 :                                 task->has_aux = true;
    1458          11 :                                 SLIST_REMOVE_HEAD(&task->accel_ch->task_aux_data_pool, link);
    1459             :                         }
    1460             : 
    1461          11 :                         iov = &task->aux->iovs[SPDK_ACCEL_AXU_IOV_VIRT_SRC];
    1462          11 :                         assert(task->s.iovcnt == 1);
    1463          11 :                         accel_update_virt_iov(iov, &task->s.iovs[0], buf);
    1464          11 :                         task->src_domain = NULL;
    1465          11 :                         task->s.iovs = iov;
    1466             :                 }
    1467          28 :                 if (task->dst_domain == g_accel_domain && task->dst_domain_ctx == buf) {
    1468          17 :                         if (!task->has_aux) {
    1469           2 :                                 task->aux = SLIST_FIRST(&task->accel_ch->task_aux_data_pool);
    1470           2 :                                 assert(task->aux && "Can't allocate aux data structure");
    1471           2 :                                 task->has_aux = true;
    1472           2 :                                 SLIST_REMOVE_HEAD(&task->accel_ch->task_aux_data_pool, link);
    1473             :                         }
    1474             : 
    1475          17 :                         iov = &task->aux->iovs[SPDK_ACCEL_AXU_IOV_VIRT_DST];
    1476          17 :                         assert(task->d.iovcnt == 1);
    1477          17 :                         accel_update_virt_iov(iov, &task->d.iovs[0], buf);
    1478          17 :                         task->dst_domain = NULL;
    1479          17 :                         task->d.iovs = iov;
    1480             :                 }
    1481             :         }
    1482          10 : }
    1483             : 
    1484             : static void accel_process_sequence(struct spdk_accel_sequence *seq);
    1485             : 
    1486             : static void
    1487           3 : accel_iobuf_get_virtbuf_cb(struct spdk_iobuf_entry *entry, void *buf)
    1488             : {
    1489             :         struct accel_buffer *accel_buf;
    1490             : 
    1491           3 :         accel_buf = SPDK_CONTAINEROF(entry, struct accel_buffer, iobuf);
    1492             : 
    1493           3 :         assert(accel_buf->seq != NULL);
    1494           3 :         assert(accel_buf->buf == NULL);
    1495           3 :         accel_buf->buf = buf;
    1496             : 
    1497           3 :         assert(accel_buf->seq->state == ACCEL_SEQUENCE_STATE_AWAIT_VIRTBUF);
    1498           3 :         accel_sequence_set_state(accel_buf->seq, ACCEL_SEQUENCE_STATE_CHECK_VIRTBUF);
    1499           3 :         accel_sequence_set_virtbuf(accel_buf->seq, accel_buf);
    1500           3 :         accel_process_sequence(accel_buf->seq);
    1501           3 : }
    1502             : 
    1503             : static bool
    1504          29 : accel_sequence_alloc_buf(struct spdk_accel_sequence *seq, struct accel_buffer *buf,
    1505             :                          spdk_iobuf_get_cb cb_fn)
    1506             : {
    1507          29 :         struct accel_io_channel *ch = seq->ch;
    1508             : 
    1509          29 :         assert(buf->seq == NULL);
    1510             : 
    1511          29 :         buf->seq = seq;
    1512             : 
    1513             :         /* Buffer might be already allocated by memory domain translation. */
    1514          29 :         if (buf->buf) {
    1515           0 :                 return true;
    1516             :         }
    1517             : 
    1518          29 :         buf->buf = spdk_iobuf_get(&ch->iobuf, buf->len, &buf->iobuf, cb_fn);
    1519          29 :         if (spdk_unlikely(buf->buf == NULL)) {
    1520           5 :                 accel_update_stats(ch, retry.iobuf, 1);
    1521           5 :                 return false;
    1522             :         }
    1523             : 
    1524          24 :         return true;
    1525             : }
    1526             : 
    1527             : static bool
    1528         103 : accel_sequence_check_virtbuf(struct spdk_accel_sequence *seq, struct spdk_accel_task *task)
    1529             : {
    1530             :         /* If a task doesn't have dst/src (e.g. fill, crc32), its dst/src domain should be set to
    1531             :          * NULL */
    1532         103 :         if (task->src_domain == g_accel_domain) {
    1533           0 :                 if (!accel_sequence_alloc_buf(seq, task->src_domain_ctx,
    1534             :                                               accel_iobuf_get_virtbuf_cb)) {
    1535           0 :                         return false;
    1536             :                 }
    1537             : 
    1538           0 :                 accel_sequence_set_virtbuf(seq, task->src_domain_ctx);
    1539             :         }
    1540             : 
    1541         103 :         if (task->dst_domain == g_accel_domain) {
    1542          10 :                 if (!accel_sequence_alloc_buf(seq, task->dst_domain_ctx,
    1543             :                                               accel_iobuf_get_virtbuf_cb)) {
    1544           3 :                         return false;
    1545             :                 }
    1546             : 
    1547           7 :                 accel_sequence_set_virtbuf(seq, task->dst_domain_ctx);
    1548             :         }
    1549             : 
    1550         100 :         return true;
    1551             : }
    1552             : 
    1553             : static void
    1554           0 : accel_sequence_get_buf_cb(struct spdk_iobuf_entry *entry, void *buf)
    1555             : {
    1556             :         struct accel_buffer *accel_buf;
    1557             : 
    1558           0 :         accel_buf = SPDK_CONTAINEROF(entry, struct accel_buffer, iobuf);
    1559             : 
    1560           0 :         assert(accel_buf->seq != NULL);
    1561           0 :         assert(accel_buf->buf == NULL);
    1562           0 :         accel_buf->buf = buf;
    1563             : 
    1564           0 :         accel_sequence_set_virtbuf(accel_buf->seq, accel_buf);
    1565           0 :         accel_buf->cb_fn(accel_buf->seq, accel_buf->cb_ctx);
    1566           0 : }
    1567             : 
    1568             : bool
    1569           0 : spdk_accel_alloc_sequence_buf(struct spdk_accel_sequence *seq, void *buf,
    1570             :                               struct spdk_memory_domain *domain, void *domain_ctx,
    1571             :                               spdk_accel_sequence_get_buf_cb cb_fn, void *cb_ctx)
    1572             : {
    1573           0 :         struct accel_buffer *accel_buf = domain_ctx;
    1574             : 
    1575           0 :         assert(domain == g_accel_domain);
    1576           0 :         accel_buf->cb_fn = cb_fn;
    1577           0 :         accel_buf->cb_ctx = cb_ctx;
    1578             : 
    1579           0 :         if (!accel_sequence_alloc_buf(seq, accel_buf, accel_sequence_get_buf_cb)) {
    1580           0 :                 return false;
    1581             :         }
    1582             : 
    1583           0 :         accel_sequence_set_virtbuf(seq, accel_buf);
    1584             : 
    1585           0 :         return true;
    1586             : }
    1587             : 
    1588             : struct spdk_accel_task *
    1589          24 : spdk_accel_sequence_first_task(struct spdk_accel_sequence *seq)
    1590             : {
    1591          24 :         return TAILQ_FIRST(&seq->tasks);
    1592             : }
    1593             : 
    1594             : struct spdk_accel_task *
    1595           0 : spdk_accel_sequence_next_task(struct spdk_accel_task *task)
    1596             : {
    1597           0 :         return TAILQ_NEXT(task, seq_link);
    1598             : }
    1599             : 
    1600             : static inline void
    1601          19 : accel_set_bounce_buffer(struct spdk_accel_bounce_buffer *bounce, struct iovec **iovs,
    1602             :                         uint32_t *iovcnt, struct spdk_memory_domain **domain, void **domain_ctx,
    1603             :                         struct accel_buffer *buf)
    1604             : {
    1605          19 :         bounce->orig_iovs = *iovs;
    1606          19 :         bounce->orig_iovcnt = *iovcnt;
    1607          19 :         bounce->orig_domain = *domain;
    1608          19 :         bounce->orig_domain_ctx = *domain_ctx;
    1609          19 :         bounce->iov.iov_base = buf->buf;
    1610          19 :         bounce->iov.iov_len = buf->len;
    1611             : 
    1612          19 :         *iovs = &bounce->iov;
    1613          19 :         *iovcnt = 1;
    1614          19 :         *domain = NULL;
    1615          19 : }
    1616             : 
    1617             : static void
    1618           1 : accel_iobuf_get_src_bounce_cb(struct spdk_iobuf_entry *entry, void *buf)
    1619             : {
    1620             :         struct spdk_accel_task *task;
    1621             :         struct accel_buffer *accel_buf;
    1622             : 
    1623           1 :         accel_buf = SPDK_CONTAINEROF(entry, struct accel_buffer, iobuf);
    1624           1 :         assert(accel_buf->buf == NULL);
    1625           1 :         accel_buf->buf = buf;
    1626             : 
    1627           1 :         task = TAILQ_FIRST(&accel_buf->seq->tasks);
    1628           1 :         assert(task != NULL);
    1629             : 
    1630           1 :         assert(accel_buf->seq->state == ACCEL_SEQUENCE_STATE_AWAIT_BOUNCEBUF);
    1631           1 :         accel_sequence_set_state(accel_buf->seq, ACCEL_SEQUENCE_STATE_CHECK_BOUNCEBUF);
    1632           1 :         assert(task->aux);
    1633           1 :         assert(task->has_aux);
    1634           1 :         accel_set_bounce_buffer(&task->aux->bounce.s, &task->s.iovs, &task->s.iovcnt, &task->src_domain,
    1635             :                                 &task->src_domain_ctx, accel_buf);
    1636           1 :         accel_process_sequence(accel_buf->seq);
    1637           1 : }
    1638             : 
    1639             : static void
    1640           1 : accel_iobuf_get_dst_bounce_cb(struct spdk_iobuf_entry *entry, void *buf)
    1641             : {
    1642             :         struct spdk_accel_task *task;
    1643             :         struct accel_buffer *accel_buf;
    1644             : 
    1645           1 :         accel_buf = SPDK_CONTAINEROF(entry, struct accel_buffer, iobuf);
    1646           1 :         assert(accel_buf->buf == NULL);
    1647           1 :         accel_buf->buf = buf;
    1648             : 
    1649           1 :         task = TAILQ_FIRST(&accel_buf->seq->tasks);
    1650           1 :         assert(task != NULL);
    1651             : 
    1652           1 :         assert(accel_buf->seq->state == ACCEL_SEQUENCE_STATE_AWAIT_BOUNCEBUF);
    1653           1 :         accel_sequence_set_state(accel_buf->seq, ACCEL_SEQUENCE_STATE_CHECK_BOUNCEBUF);
    1654           1 :         assert(task->aux);
    1655           1 :         assert(task->has_aux);
    1656           1 :         accel_set_bounce_buffer(&task->aux->bounce.d, &task->d.iovs, &task->d.iovcnt, &task->dst_domain,
    1657             :                                 &task->dst_domain_ctx, accel_buf);
    1658           1 :         accel_process_sequence(accel_buf->seq);
    1659           1 : }
    1660             : 
    1661             : static int
    1662          87 : accel_sequence_check_bouncebuf(struct spdk_accel_sequence *seq, struct spdk_accel_task *task)
    1663             : {
    1664             :         struct accel_buffer *buf;
    1665             : 
    1666          87 :         if (task->src_domain != NULL) {
    1667             :                 /* By the time we're here, accel buffers should have been allocated */
    1668           9 :                 assert(task->src_domain != g_accel_domain);
    1669             : 
    1670           9 :                 if (!task->has_aux) {
    1671           8 :                         task->aux = SLIST_FIRST(&task->accel_ch->task_aux_data_pool);
    1672           8 :                         if (spdk_unlikely(!task->aux)) {
    1673           0 :                                 SPDK_ERRLOG("Can't allocate aux data structure\n");
    1674           0 :                                 assert(0);
    1675             :                                 return -EAGAIN;
    1676             :                         }
    1677           8 :                         task->has_aux = true;
    1678           8 :                         SLIST_REMOVE_HEAD(&task->accel_ch->task_aux_data_pool, link);
    1679             :                 }
    1680           9 :                 buf = accel_get_buf(seq->ch, accel_get_iovlen(task->s.iovs, task->s.iovcnt));
    1681           9 :                 if (buf == NULL) {
    1682           0 :                         SPDK_ERRLOG("Couldn't allocate buffer descriptor\n");
    1683           0 :                         return -ENOMEM;
    1684             :                 }
    1685             : 
    1686           9 :                 SLIST_INSERT_HEAD(&seq->bounce_bufs, buf, link);
    1687           9 :                 if (!accel_sequence_alloc_buf(seq, buf, accel_iobuf_get_src_bounce_cb)) {
    1688           1 :                         return -EAGAIN;
    1689             :                 }
    1690             : 
    1691           8 :                 accel_set_bounce_buffer(&task->aux->bounce.s, &task->s.iovs, &task->s.iovcnt,
    1692             :                                         &task->src_domain, &task->src_domain_ctx, buf);
    1693             :         }
    1694             : 
    1695          86 :         if (task->dst_domain != NULL) {
    1696             :                 /* By the time we're here, accel buffers should have been allocated */
    1697          10 :                 assert(task->dst_domain != g_accel_domain);
    1698             : 
    1699          10 :                 if (!task->has_aux) {
    1700           0 :                         task->aux = SLIST_FIRST(&task->accel_ch->task_aux_data_pool);
    1701           0 :                         if (spdk_unlikely(!task->aux)) {
    1702           0 :                                 SPDK_ERRLOG("Can't allocate aux data structure\n");
    1703           0 :                                 assert(0);
    1704             :                                 return -EAGAIN;
    1705             :                         }
    1706           0 :                         task->has_aux = true;
    1707           0 :                         SLIST_REMOVE_HEAD(&task->accel_ch->task_aux_data_pool, link);
    1708             :                 }
    1709          10 :                 buf = accel_get_buf(seq->ch, accel_get_iovlen(task->d.iovs, task->d.iovcnt));
    1710          10 :                 if (buf == NULL) {
    1711             :                         /* The src buffer will be released when a sequence is completed */
    1712           0 :                         SPDK_ERRLOG("Couldn't allocate buffer descriptor\n");
    1713           0 :                         return -ENOMEM;
    1714             :                 }
    1715             : 
    1716          10 :                 SLIST_INSERT_HEAD(&seq->bounce_bufs, buf, link);
    1717          10 :                 if (!accel_sequence_alloc_buf(seq, buf, accel_iobuf_get_dst_bounce_cb)) {
    1718           1 :                         return -EAGAIN;
    1719             :                 }
    1720             : 
    1721           9 :                 accel_set_bounce_buffer(&task->aux->bounce.d, &task->d.iovs, &task->d.iovcnt,
    1722             :                                         &task->dst_domain, &task->dst_domain_ctx, buf);
    1723             :         }
    1724             : 
    1725          85 :         return 0;
    1726             : }
    1727             : 
    1728             : static void
    1729           8 : accel_task_pull_data_cb(void *ctx, int status)
    1730             : {
    1731           8 :         struct spdk_accel_sequence *seq = ctx;
    1732             : 
    1733           8 :         assert(seq->state == ACCEL_SEQUENCE_STATE_AWAIT_PULL_DATA);
    1734           8 :         if (spdk_likely(status == 0)) {
    1735           7 :                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_EXEC_TASK);
    1736             :         } else {
    1737           1 :                 accel_sequence_set_fail(seq, status);
    1738             :         }
    1739             : 
    1740           8 :         accel_process_sequence(seq);
    1741           8 : }
    1742             : 
    1743             : static void
    1744           9 : accel_task_pull_data(struct spdk_accel_sequence *seq, struct spdk_accel_task *task)
    1745             : {
    1746             :         int rc;
    1747             : 
    1748           9 :         assert(task->has_aux);
    1749           9 :         assert(task->aux);
    1750           9 :         assert(task->aux->bounce.s.orig_iovs != NULL);
    1751           9 :         assert(task->aux->bounce.s.orig_domain != NULL);
    1752           9 :         assert(task->aux->bounce.s.orig_domain != g_accel_domain);
    1753           9 :         assert(!g_modules_opc[task->op_code].supports_memory_domains);
    1754             : 
    1755           9 :         rc = spdk_memory_domain_pull_data(task->aux->bounce.s.orig_domain,
    1756           9 :                                           task->aux->bounce.s.orig_domain_ctx,
    1757           9 :                                           task->aux->bounce.s.orig_iovs, task->aux->bounce.s.orig_iovcnt,
    1758             :                                           task->s.iovs, task->s.iovcnt,
    1759             :                                           accel_task_pull_data_cb, seq);
    1760           9 :         if (spdk_unlikely(rc != 0)) {
    1761           1 :                 SPDK_ERRLOG("Failed to pull data from memory domain: %s, rc: %d\n",
    1762             :                             spdk_memory_domain_get_dma_device_id(task->aux->bounce.s.orig_domain), rc);
    1763           1 :                 accel_sequence_set_fail(seq, rc);
    1764             :         }
    1765           9 : }
    1766             : 
    1767             : static void
    1768           7 : accel_task_push_data_cb(void *ctx, int status)
    1769             : {
    1770           7 :         struct spdk_accel_sequence *seq = ctx;
    1771             : 
    1772           7 :         assert(seq->state == ACCEL_SEQUENCE_STATE_AWAIT_PUSH_DATA);
    1773           7 :         if (spdk_likely(status == 0)) {
    1774           6 :                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_NEXT_TASK);
    1775             :         } else {
    1776           1 :                 accel_sequence_set_fail(seq, status);
    1777             :         }
    1778             : 
    1779           7 :         accel_process_sequence(seq);
    1780           7 : }
    1781             : 
    1782             : static void
    1783           8 : accel_task_push_data(struct spdk_accel_sequence *seq, struct spdk_accel_task *task)
    1784             : {
    1785             :         int rc;
    1786             : 
    1787           8 :         assert(task->has_aux);
    1788           8 :         assert(task->aux);
    1789           8 :         assert(task->aux->bounce.d.orig_iovs != NULL);
    1790           8 :         assert(task->aux->bounce.d.orig_domain != NULL);
    1791           8 :         assert(task->aux->bounce.d.orig_domain != g_accel_domain);
    1792           8 :         assert(!g_modules_opc[task->op_code].supports_memory_domains);
    1793             : 
    1794           8 :         rc = spdk_memory_domain_push_data(task->aux->bounce.d.orig_domain,
    1795           8 :                                           task->aux->bounce.d.orig_domain_ctx,
    1796           8 :                                           task->aux->bounce.d.orig_iovs, task->aux->bounce.d.orig_iovcnt,
    1797             :                                           task->d.iovs, task->d.iovcnt,
    1798             :                                           accel_task_push_data_cb, seq);
    1799           8 :         if (spdk_unlikely(rc != 0)) {
    1800           1 :                 SPDK_ERRLOG("Failed to push data to memory domain: %s, rc: %d\n",
    1801             :                             spdk_memory_domain_get_dma_device_id(task->aux->bounce.s.orig_domain), rc);
    1802           1 :                 accel_sequence_set_fail(seq, rc);
    1803             :         }
    1804           8 : }
    1805             : 
    1806             : static void
    1807         190 : accel_process_sequence(struct spdk_accel_sequence *seq)
    1808             : {
    1809         190 :         struct accel_io_channel *accel_ch = seq->ch;
    1810             :         struct spdk_accel_task *task;
    1811             :         enum accel_sequence_state state;
    1812             :         int rc;
    1813             : 
    1814             :         /* Prevent recursive calls to this function */
    1815         190 :         if (spdk_unlikely(seq->in_process_sequence)) {
    1816          74 :                 return;
    1817             :         }
    1818         116 :         seq->in_process_sequence = true;
    1819             : 
    1820         116 :         task = TAILQ_FIRST(&seq->tasks);
    1821             :         do {
    1822         431 :                 state = seq->state;
    1823         431 :                 switch (state) {
    1824         105 :                 case ACCEL_SEQUENCE_STATE_INIT:
    1825         105 :                         if (g_accel_driver != NULL) {
    1826          13 :                                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_DRIVER_EXEC_TASKS);
    1827          13 :                                 break;
    1828             :                         }
    1829             :                 /* Fall through */
    1830             :                 case ACCEL_SEQUENCE_STATE_CHECK_VIRTBUF:
    1831         103 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_AWAIT_VIRTBUF);
    1832         103 :                         if (!accel_sequence_check_virtbuf(seq, task)) {
    1833             :                                 /* We couldn't allocate a buffer, wait until one is available */
    1834           3 :                                 break;
    1835             :                         }
    1836         100 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_CHECK_BOUNCEBUF);
    1837             :                 /* Fall through */
    1838         102 :                 case ACCEL_SEQUENCE_STATE_CHECK_BOUNCEBUF:
    1839             :                         /* If a module supports memory domains, we don't need to allocate bounce
    1840             :                          * buffers */
    1841         102 :                         if (g_modules_opc[task->op_code].supports_memory_domains) {
    1842          15 :                                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_EXEC_TASK);
    1843          15 :                                 break;
    1844             :                         }
    1845          87 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_AWAIT_BOUNCEBUF);
    1846          87 :                         rc = accel_sequence_check_bouncebuf(seq, task);
    1847          87 :                         if (spdk_unlikely(rc != 0)) {
    1848             :                                 /* We couldn't allocate a buffer, wait until one is available */
    1849           2 :                                 if (rc == -EAGAIN) {
    1850           2 :                                         break;
    1851             :                                 }
    1852           0 :                                 accel_sequence_set_fail(seq, rc);
    1853           0 :                                 break;
    1854             :                         }
    1855          85 :                         if (task->has_aux && task->s.iovs == &task->aux->bounce.s.iov) {
    1856           9 :                                 assert(task->aux->bounce.s.orig_iovs);
    1857           9 :                                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_PULL_DATA);
    1858           9 :                                 break;
    1859             :                         }
    1860          76 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_EXEC_TASK);
    1861             :                 /* Fall through */
    1862          98 :                 case ACCEL_SEQUENCE_STATE_EXEC_TASK:
    1863          98 :                         SPDK_DEBUGLOG(accel, "Executing %s operation, sequence: %p\n",
    1864             :                                       g_opcode_strings[task->op_code], seq);
    1865             : 
    1866          98 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_AWAIT_TASK);
    1867          98 :                         rc = accel_submit_task(accel_ch, task);
    1868          98 :                         if (spdk_unlikely(rc != 0)) {
    1869           2 :                                 SPDK_ERRLOG("Failed to submit %s operation, sequence: %p\n",
    1870             :                                             g_opcode_strings[task->op_code], seq);
    1871           2 :                                 accel_sequence_set_fail(seq, rc);
    1872             :                         }
    1873          98 :                         break;
    1874           9 :                 case ACCEL_SEQUENCE_STATE_PULL_DATA:
    1875           9 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_AWAIT_PULL_DATA);
    1876           9 :                         accel_task_pull_data(seq, task);
    1877           9 :                         break;
    1878          94 :                 case ACCEL_SEQUENCE_STATE_COMPLETE_TASK:
    1879          94 :                         if (task->has_aux && task->d.iovs == &task->aux->bounce.d.iov) {
    1880           8 :                                 assert(task->aux->bounce.d.orig_iovs);
    1881           8 :                                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_PUSH_DATA);
    1882           8 :                                 break;
    1883             :                         }
    1884          86 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_NEXT_TASK);
    1885          86 :                         break;
    1886           8 :                 case ACCEL_SEQUENCE_STATE_PUSH_DATA:
    1887           8 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_AWAIT_PUSH_DATA);
    1888           8 :                         accel_task_push_data(seq, task);
    1889           8 :                         break;
    1890          92 :                 case ACCEL_SEQUENCE_STATE_NEXT_TASK:
    1891          92 :                         accel_sequence_complete_task(seq, task);
    1892             :                         /* Check if there are any remaining tasks */
    1893          92 :                         task = TAILQ_FIRST(&seq->tasks);
    1894          92 :                         if (task == NULL) {
    1895             :                                 /* Immediately return here to make sure we don't touch the sequence
    1896             :                                  * after it's completed */
    1897          49 :                                 accel_sequence_complete(seq);
    1898          49 :                                 return;
    1899             :                         }
    1900          43 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_INIT);
    1901          43 :                         break;
    1902          13 :                 case ACCEL_SEQUENCE_STATE_DRIVER_EXEC_TASKS:
    1903          13 :                         assert(!TAILQ_EMPTY(&seq->tasks));
    1904             : 
    1905          13 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_DRIVER_AWAIT_TASKS);
    1906          13 :                         rc = g_accel_driver->execute_sequence(accel_ch->driver_channel, seq);
    1907          13 :                         if (spdk_unlikely(rc != 0)) {
    1908           1 :                                 SPDK_ERRLOG("Failed to execute sequence: %p using driver: %s\n",
    1909             :                                             seq, g_accel_driver->name);
    1910           1 :                                 accel_sequence_set_fail(seq, rc);
    1911             :                         }
    1912          13 :                         break;
    1913          11 :                 case ACCEL_SEQUENCE_STATE_DRIVER_COMPLETE_TASKS:
    1914             :                         /* Get the task again, as the driver might have completed some tasks
    1915             :                          * synchronously */
    1916          11 :                         task = TAILQ_FIRST(&seq->tasks);
    1917          11 :                         if (task == NULL) {
    1918             :                                 /* Immediately return here to make sure we don't touch the sequence
    1919             :                                  * after it's completed */
    1920           3 :                                 accel_sequence_complete(seq);
    1921           3 :                                 return;
    1922             :                         }
    1923             :                         /* We don't want to execute the next task through the driver, so we
    1924             :                          * explicitly omit the INIT state here */
    1925           8 :                         accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_CHECK_VIRTBUF);
    1926           8 :                         break;
    1927          10 :                 case ACCEL_SEQUENCE_STATE_ERROR:
    1928             :                         /* Immediately return here to make sure we don't touch the sequence
    1929             :                          * after it's completed */
    1930          10 :                         assert(seq->status != 0);
    1931          10 :                         accel_sequence_complete(seq);
    1932          10 :                         return;
    1933          54 :                 case ACCEL_SEQUENCE_STATE_AWAIT_VIRTBUF:
    1934             :                 case ACCEL_SEQUENCE_STATE_AWAIT_BOUNCEBUF:
    1935             :                 case ACCEL_SEQUENCE_STATE_AWAIT_PULL_DATA:
    1936             :                 case ACCEL_SEQUENCE_STATE_AWAIT_TASK:
    1937             :                 case ACCEL_SEQUENCE_STATE_AWAIT_PUSH_DATA:
    1938             :                 case ACCEL_SEQUENCE_STATE_DRIVER_AWAIT_TASKS:
    1939          54 :                         break;
    1940           0 :                 default:
    1941           0 :                         assert(0 && "bad state");
    1942             :                         break;
    1943             :                 }
    1944         369 :         } while (seq->state != state);
    1945             : 
    1946          54 :         seq->in_process_sequence = false;
    1947             : }
    1948             : 
    1949             : static void
    1950         108 : accel_sequence_task_cb(void *cb_arg, int status)
    1951             : {
    1952         108 :         struct spdk_accel_sequence *seq = cb_arg;
    1953         108 :         struct spdk_accel_task *task = TAILQ_FIRST(&seq->tasks);
    1954             : 
    1955         108 :         switch (seq->state) {
    1956          96 :         case ACCEL_SEQUENCE_STATE_AWAIT_TASK:
    1957          96 :                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_COMPLETE_TASK);
    1958          96 :                 if (spdk_unlikely(status != 0)) {
    1959           2 :                         SPDK_ERRLOG("Failed to execute %s operation, sequence: %p\n",
    1960             :                                     g_opcode_strings[task->op_code], seq);
    1961           2 :                         accel_sequence_set_fail(seq, status);
    1962             :                 }
    1963             : 
    1964          96 :                 accel_process_sequence(seq);
    1965          96 :                 break;
    1966          12 :         case ACCEL_SEQUENCE_STATE_DRIVER_AWAIT_TASKS:
    1967          12 :                 assert(g_accel_driver != NULL);
    1968             :                 /* Immediately remove the task from the outstanding list to make sure the next call
    1969             :                  * to spdk_accel_sequence_first_task() doesn't return it */
    1970          12 :                 accel_sequence_complete_task(seq, task);
    1971          12 :                 if (spdk_unlikely(status != 0)) {
    1972           1 :                         SPDK_ERRLOG("Failed to execute %s operation, sequence: %p through "
    1973             :                                     "driver: %s\n", g_opcode_strings[task->op_code], seq,
    1974             :                                     g_accel_driver->name);
    1975             :                         /* Update status without using accel_sequence_set_fail() to avoid changing
    1976             :                          * seq's state to ERROR until driver calls spdk_accel_sequence_continue() */
    1977           1 :                         seq->status = status;
    1978             :                 }
    1979          12 :                 break;
    1980           0 :         default:
    1981           0 :                 assert(0 && "bad state");
    1982             :                 break;
    1983             :         }
    1984         108 : }
    1985             : 
    1986             : void
    1987          12 : spdk_accel_sequence_continue(struct spdk_accel_sequence *seq)
    1988             : {
    1989          12 :         assert(g_accel_driver != NULL);
    1990          12 :         assert(seq->state == ACCEL_SEQUENCE_STATE_DRIVER_AWAIT_TASKS);
    1991             : 
    1992          12 :         if (spdk_likely(seq->status == 0)) {
    1993          11 :                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_DRIVER_COMPLETE_TASKS);
    1994             :         } else {
    1995           1 :                 accel_sequence_set_state(seq, ACCEL_SEQUENCE_STATE_ERROR);
    1996             :         }
    1997             : 
    1998          12 :         accel_process_sequence(seq);
    1999          12 : }
    2000             : 
    2001             : static bool
    2002          39 : accel_compare_iovs(struct iovec *iova, uint32_t iovacnt, struct iovec *iovb, uint32_t iovbcnt)
    2003             : {
    2004             :         /* For now, just do a dumb check that the iovecs arrays are exactly the same */
    2005          39 :         if (iovacnt != iovbcnt) {
    2006           0 :                 return false;
    2007             :         }
    2008             : 
    2009          39 :         return memcmp(iova, iovb, sizeof(*iova) * iovacnt) == 0;
    2010             : }
    2011             : 
    2012             : static bool
    2013          26 : accel_task_set_dstbuf(struct spdk_accel_task *task, struct spdk_accel_task *next)
    2014             : {
    2015             :         struct spdk_accel_task *prev;
    2016             : 
    2017          26 :         switch (task->op_code) {
    2018          22 :         case SPDK_ACCEL_OPC_DECOMPRESS:
    2019             :         case SPDK_ACCEL_OPC_FILL:
    2020             :         case SPDK_ACCEL_OPC_ENCRYPT:
    2021             :         case SPDK_ACCEL_OPC_DECRYPT:
    2022          22 :                 if (task->dst_domain != next->src_domain) {
    2023           0 :                         return false;
    2024             :                 }
    2025          22 :                 if (!accel_compare_iovs(task->d.iovs, task->d.iovcnt,
    2026             :                                         next->s.iovs, next->s.iovcnt)) {
    2027           1 :                         return false;
    2028             :                 }
    2029          21 :                 task->d.iovs = next->d.iovs;
    2030          21 :                 task->d.iovcnt = next->d.iovcnt;
    2031          21 :                 task->dst_domain = next->dst_domain;
    2032          21 :                 task->dst_domain_ctx = next->dst_domain_ctx;
    2033          21 :                 break;
    2034           4 :         case SPDK_ACCEL_OPC_CRC32C:
    2035             :                 /* crc32 is special, because it doesn't have a dst buffer */
    2036           4 :                 if (task->src_domain != next->src_domain) {
    2037           0 :                         return false;
    2038             :                 }
    2039           4 :                 if (!accel_compare_iovs(task->s.iovs, task->s.iovcnt,
    2040             :                                         next->s.iovs, next->s.iovcnt)) {
    2041           1 :                         return false;
    2042             :                 }
    2043             :                 /* We can only change crc32's buffer if we can change previous task's buffer */
    2044           3 :                 prev = TAILQ_PREV(task, accel_sequence_tasks, seq_link);
    2045           3 :                 if (prev == NULL) {
    2046           1 :                         return false;
    2047             :                 }
    2048           2 :                 if (!accel_task_set_dstbuf(prev, next)) {
    2049           0 :                         return false;
    2050             :                 }
    2051           2 :                 task->s.iovs = next->d.iovs;
    2052           2 :                 task->s.iovcnt = next->d.iovcnt;
    2053           2 :                 task->src_domain = next->dst_domain;
    2054           2 :                 task->src_domain_ctx = next->dst_domain_ctx;
    2055           2 :                 break;
    2056           0 :         default:
    2057           0 :                 return false;
    2058             :         }
    2059             : 
    2060          23 :         return true;
    2061             : }
    2062             : 
    2063             : static void
    2064          87 : accel_sequence_merge_tasks(struct spdk_accel_sequence *seq, struct spdk_accel_task *task,
    2065             :                            struct spdk_accel_task **next_task)
    2066             : {
    2067          87 :         struct spdk_accel_task *next = *next_task;
    2068             : 
    2069          87 :         switch (task->op_code) {
    2070          15 :         case SPDK_ACCEL_OPC_COPY:
    2071             :                 /* We only allow changing src of operations that actually have a src, e.g. we never
    2072             :                  * do it for fill.  Theoretically, it is possible, but we'd have to be careful to
    2073             :                  * change the src of the operation after fill (which in turn could also be a fill).
    2074             :                  * So, for the sake of simplicity, skip this type of operations for now.
    2075             :                  */
    2076          15 :                 if (next->op_code != SPDK_ACCEL_OPC_DECOMPRESS &&
    2077           9 :                     next->op_code != SPDK_ACCEL_OPC_COPY &&
    2078           8 :                     next->op_code != SPDK_ACCEL_OPC_ENCRYPT &&
    2079           5 :                     next->op_code != SPDK_ACCEL_OPC_DECRYPT &&
    2080           2 :                     next->op_code != SPDK_ACCEL_OPC_COPY_CRC32C) {
    2081           2 :                         break;
    2082             :                 }
    2083          13 :                 if (task->dst_domain != next->src_domain) {
    2084           0 :                         break;
    2085             :                 }
    2086          13 :                 if (!accel_compare_iovs(task->d.iovs, task->d.iovcnt,
    2087             :                                         next->s.iovs, next->s.iovcnt)) {
    2088           0 :                         break;
    2089             :                 }
    2090          13 :                 next->s.iovs = task->s.iovs;
    2091          13 :                 next->s.iovcnt = task->s.iovcnt;
    2092          13 :                 next->src_domain = task->src_domain;
    2093          13 :                 next->src_domain_ctx = task->src_domain_ctx;
    2094          13 :                 accel_sequence_complete_task(seq, task);
    2095          13 :                 break;
    2096          72 :         case SPDK_ACCEL_OPC_DECOMPRESS:
    2097             :         case SPDK_ACCEL_OPC_FILL:
    2098             :         case SPDK_ACCEL_OPC_ENCRYPT:
    2099             :         case SPDK_ACCEL_OPC_DECRYPT:
    2100             :         case SPDK_ACCEL_OPC_CRC32C:
    2101             :                 /* We can only merge tasks when one of them is a copy */
    2102          72 :                 if (next->op_code != SPDK_ACCEL_OPC_COPY) {
    2103          48 :                         break;
    2104             :                 }
    2105          24 :                 if (!accel_task_set_dstbuf(task, next)) {
    2106           3 :                         break;
    2107             :                 }
    2108             :                 /* We're removing next_task from the tasks queue, so we need to update its pointer,
    2109             :                  * so that the TAILQ_FOREACH_SAFE() loop below works correctly */
    2110          21 :                 *next_task = TAILQ_NEXT(next, seq_link);
    2111          21 :                 accel_sequence_complete_task(seq, next);
    2112          21 :                 break;
    2113           0 :         default:
    2114           0 :                 assert(0 && "bad opcode");
    2115             :                 break;
    2116             :         }
    2117          87 : }
    2118             : 
    2119             : void
    2120          62 : spdk_accel_sequence_finish(struct spdk_accel_sequence *seq,
    2121             :                            spdk_accel_completion_cb cb_fn, void *cb_arg)
    2122             : {
    2123          62 :         struct spdk_accel_task *task, *next;
    2124             : 
    2125             :         /* Try to remove any copy operations if possible */
    2126         149 :         TAILQ_FOREACH_SAFE(task, &seq->tasks, seq_link, next) {
    2127         130 :                 if (next == NULL) {
    2128          43 :                         break;
    2129             :                 }
    2130          87 :                 accel_sequence_merge_tasks(seq, task, &next);
    2131             :         }
    2132             : 
    2133          62 :         seq->cb_fn = cb_fn;
    2134          62 :         seq->cb_arg = cb_arg;
    2135             : 
    2136          62 :         accel_process_sequence(seq);
    2137          62 : }
    2138             : 
    2139             : void
    2140           5 : spdk_accel_sequence_reverse(struct spdk_accel_sequence *seq)
    2141             : {
    2142           5 :         struct accel_sequence_tasks tasks = TAILQ_HEAD_INITIALIZER(tasks);
    2143             :         struct spdk_accel_task *task;
    2144             : 
    2145           5 :         TAILQ_SWAP(&tasks, &seq->tasks, spdk_accel_task, seq_link);
    2146             : 
    2147          17 :         while (!TAILQ_EMPTY(&tasks)) {
    2148          12 :                 task = TAILQ_FIRST(&tasks);
    2149          12 :                 TAILQ_REMOVE(&tasks, task, seq_link);
    2150          12 :                 TAILQ_INSERT_HEAD(&seq->tasks, task, seq_link);
    2151             :         }
    2152           5 : }
    2153             : 
    2154             : void
    2155           3 : spdk_accel_sequence_abort(struct spdk_accel_sequence *seq)
    2156             : {
    2157           3 :         if (seq == NULL) {
    2158           1 :                 return;
    2159             :         }
    2160             : 
    2161           2 :         accel_sequence_complete_tasks(seq);
    2162           2 :         accel_sequence_put(seq);
    2163             : }
    2164             : 
    2165             : struct spdk_memory_domain *
    2166           0 : spdk_accel_get_memory_domain(void)
    2167             : {
    2168           0 :         return g_accel_domain;
    2169             : }
    2170             : 
    2171             : static struct spdk_accel_module_if *
    2172           7 : _module_find_by_name(const char *name)
    2173             : {
    2174           7 :         struct spdk_accel_module_if *accel_module = NULL;
    2175             : 
    2176          16 :         TAILQ_FOREACH(accel_module, &spdk_accel_module_list, tailq) {
    2177          10 :                 if (strcmp(name, accel_module->name) == 0) {
    2178           1 :                         break;
    2179             :                 }
    2180             :         }
    2181             : 
    2182           7 :         return accel_module;
    2183             : }
    2184             : 
    2185             : static inline struct spdk_accel_crypto_key *
    2186           3 : _accel_crypto_key_get(const char *name)
    2187             : {
    2188             :         struct spdk_accel_crypto_key *key;
    2189             : 
    2190           3 :         assert(spdk_spin_held(&g_keyring_spin));
    2191             : 
    2192           3 :         TAILQ_FOREACH(key, &g_keyring, link) {
    2193           2 :                 if (strcmp(name, key->param.key_name) == 0) {
    2194           2 :                         return key;
    2195             :                 }
    2196             :         }
    2197             : 
    2198           1 :         return NULL;
    2199             : }
    2200             : 
    2201             : static void
    2202           1 : accel_crypto_key_free_mem(struct spdk_accel_crypto_key *key)
    2203             : {
    2204           1 :         if (key->param.hex_key) {
    2205           1 :                 spdk_memset_s(key->param.hex_key, key->key_size * 2, 0, key->key_size * 2);
    2206           1 :                 free(key->param.hex_key);
    2207             :         }
    2208           1 :         if (key->param.hex_key2) {
    2209           1 :                 spdk_memset_s(key->param.hex_key2, key->key2_size * 2, 0, key->key2_size * 2);
    2210           1 :                 free(key->param.hex_key2);
    2211             :         }
    2212           1 :         free(key->param.tweak_mode);
    2213           1 :         free(key->param.key_name);
    2214           1 :         free(key->param.cipher);
    2215           1 :         if (key->key) {
    2216           1 :                 spdk_memset_s(key->key, key->key_size, 0, key->key_size);
    2217           1 :                 free(key->key);
    2218             :         }
    2219           1 :         if (key->key2) {
    2220           1 :                 spdk_memset_s(key->key2, key->key2_size, 0, key->key2_size);
    2221           1 :                 free(key->key2);
    2222             :         }
    2223           1 :         free(key);
    2224           1 : }
    2225             : 
    2226             : static void
    2227           1 : accel_crypto_key_destroy_unsafe(struct spdk_accel_crypto_key *key)
    2228             : {
    2229           1 :         assert(key->module_if);
    2230           1 :         assert(key->module_if->crypto_key_deinit);
    2231             : 
    2232           1 :         key->module_if->crypto_key_deinit(key);
    2233           1 :         accel_crypto_key_free_mem(key);
    2234           1 : }
    2235             : 
    2236             : /*
    2237             :  * This function mitigates a timing side channel which could be caused by using strcmp()
    2238             :  * Please refer to chapter "Mitigating Information Leakage Based on Variable Timing" in
    2239             :  * the article [1] for more details
    2240             :  * [1] https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/secure-coding/mitigate-timing-side-channel-crypto-implementation.html
    2241             :  */
    2242             : static bool
    2243           1 : accel_aes_xts_keys_equal(const char *k1, size_t k1_len, const char *k2, size_t k2_len)
    2244             : {
    2245             :         size_t i;
    2246           1 :         volatile size_t x = k1_len ^ k2_len;
    2247             : 
    2248          17 :         for (i = 0; ((i < k1_len) & (i < k2_len)); i++) {
    2249          16 :                 x |= k1[i] ^ k2[i];
    2250             :         }
    2251             : 
    2252           1 :         return x == 0;
    2253             : }
    2254             : 
    2255             : static const char *g_tweak_modes[] = {
    2256             :         [SPDK_ACCEL_CRYPTO_TWEAK_MODE_SIMPLE_LBA] = "SIMPLE_LBA",
    2257             :         [SPDK_ACCEL_CRYPTO_TWEAK_MODE_JOIN_NEG_LBA_WITH_LBA] = "JOIN_NEG_LBA_WITH_LBA",
    2258             :         [SPDK_ACCEL_CRYPTO_TWEAK_MODE_INCR_512_FULL_LBA] = "INCR_512_FULL_LBA",
    2259             :         [SPDK_ACCEL_CRYPTO_TWEAK_MODE_INCR_512_UPPER_LBA] = "INCR_512_UPPER_LBA",
    2260             : };
    2261             : 
    2262             : static const char *g_ciphers[] = {
    2263             :         [SPDK_ACCEL_CIPHER_AES_CBC] = "AES_CBC",
    2264             :         [SPDK_ACCEL_CIPHER_AES_XTS] = "AES_XTS",
    2265             : };
    2266             : 
    2267             : int
    2268           1 : spdk_accel_crypto_key_create(const struct spdk_accel_crypto_key_create_param *param)
    2269             : {
    2270             :         struct spdk_accel_module_if *module;
    2271             :         struct spdk_accel_crypto_key *key;
    2272             :         size_t hex_key_size, hex_key2_size;
    2273           1 :         bool found = false;
    2274             :         size_t i;
    2275             :         int rc;
    2276             : 
    2277           1 :         if (!param || !param->hex_key || !param->cipher || !param->key_name) {
    2278           0 :                 return -EINVAL;
    2279             :         }
    2280             : 
    2281           1 :         if (g_modules_opc[SPDK_ACCEL_OPC_ENCRYPT].module != g_modules_opc[SPDK_ACCEL_OPC_DECRYPT].module) {
    2282             :                 /* hardly ever possible, but let's check and warn the user */
    2283           0 :                 SPDK_ERRLOG("Different accel modules are used for encryption and decryption\n");
    2284             :         }
    2285           1 :         module = g_modules_opc[SPDK_ACCEL_OPC_ENCRYPT].module;
    2286             : 
    2287           1 :         if (!module) {
    2288           0 :                 SPDK_ERRLOG("No accel module found assigned for crypto operation\n");
    2289           0 :                 return -ENOENT;
    2290             :         }
    2291             : 
    2292           1 :         if (!module->crypto_key_init || !module->crypto_supports_cipher) {
    2293           0 :                 SPDK_ERRLOG("Module %s doesn't support crypto operations\n", module->name);
    2294           0 :                 return -ENOTSUP;
    2295             :         }
    2296             : 
    2297           1 :         key = calloc(1, sizeof(*key));
    2298           1 :         if (!key) {
    2299           0 :                 return -ENOMEM;
    2300             :         }
    2301             : 
    2302           1 :         key->param.key_name = strdup(param->key_name);
    2303           1 :         if (!key->param.key_name) {
    2304           0 :                 rc = -ENOMEM;
    2305           0 :                 goto error;
    2306             :         }
    2307             : 
    2308           2 :         for (i = 0; i < SPDK_COUNTOF(g_ciphers); ++i) {
    2309           2 :                 assert(g_ciphers[i]);
    2310             : 
    2311           2 :                 if (strncmp(param->cipher, g_ciphers[i], strlen(g_ciphers[i])) == 0) {
    2312           1 :                         key->cipher = i;
    2313           1 :                         found = true;
    2314           1 :                         break;
    2315             :                 }
    2316             :         }
    2317             : 
    2318           1 :         if (!found) {
    2319           0 :                 SPDK_ERRLOG("Failed to parse cipher\n");
    2320           0 :                 rc = -EINVAL;
    2321           0 :                 goto error;
    2322             :         }
    2323             : 
    2324           1 :         key->param.cipher = strdup(param->cipher);
    2325           1 :         if (!key->param.cipher) {
    2326           0 :                 rc = -ENOMEM;
    2327           0 :                 goto error;
    2328             :         }
    2329             : 
    2330           1 :         hex_key_size = strnlen(param->hex_key, SPDK_ACCEL_CRYPTO_KEY_MAX_HEX_LENGTH);
    2331           1 :         if (hex_key_size == SPDK_ACCEL_CRYPTO_KEY_MAX_HEX_LENGTH) {
    2332           0 :                 SPDK_ERRLOG("key1 size exceeds max %d\n", SPDK_ACCEL_CRYPTO_KEY_MAX_HEX_LENGTH);
    2333           0 :                 rc = -EINVAL;
    2334           0 :                 goto error;
    2335             :         }
    2336             : 
    2337           1 :         if (hex_key_size == 0) {
    2338           0 :                 SPDK_ERRLOG("key1 size cannot be 0\n");
    2339           0 :                 rc = -EINVAL;
    2340           0 :                 goto error;
    2341             :         }
    2342             : 
    2343           1 :         key->param.hex_key = strdup(param->hex_key);
    2344           1 :         if (!key->param.hex_key) {
    2345           0 :                 rc = -ENOMEM;
    2346           0 :                 goto error;
    2347             :         }
    2348             : 
    2349           1 :         key->key_size = hex_key_size / 2;
    2350           1 :         key->key = spdk_unhexlify(key->param.hex_key);
    2351           1 :         if (!key->key) {
    2352           0 :                 SPDK_ERRLOG("Failed to unhexlify key1\n");
    2353           0 :                 rc = -EINVAL;
    2354           0 :                 goto error;
    2355             :         }
    2356             : 
    2357           1 :         if (param->hex_key2) {
    2358           1 :                 hex_key2_size = strnlen(param->hex_key2, SPDK_ACCEL_CRYPTO_KEY_MAX_HEX_LENGTH);
    2359           1 :                 if (hex_key2_size == SPDK_ACCEL_CRYPTO_KEY_MAX_HEX_LENGTH) {
    2360           0 :                         SPDK_ERRLOG("key2 size exceeds max %d\n", SPDK_ACCEL_CRYPTO_KEY_MAX_HEX_LENGTH);
    2361           0 :                         rc = -EINVAL;
    2362           0 :                         goto error;
    2363             :                 }
    2364             : 
    2365           1 :                 if (hex_key2_size == 0) {
    2366           0 :                         SPDK_ERRLOG("key2 size cannot be 0\n");
    2367           0 :                         rc = -EINVAL;
    2368           0 :                         goto error;
    2369             :                 }
    2370             : 
    2371           1 :                 key->param.hex_key2 = strdup(param->hex_key2);
    2372           1 :                 if (!key->param.hex_key2) {
    2373           0 :                         rc = -ENOMEM;
    2374           0 :                         goto error;
    2375             :                 }
    2376             : 
    2377           1 :                 key->key2_size = hex_key2_size / 2;
    2378           1 :                 key->key2 = spdk_unhexlify(key->param.hex_key2);
    2379           1 :                 if (!key->key2) {
    2380           0 :                         SPDK_ERRLOG("Failed to unhexlify key2\n");
    2381           0 :                         rc = -EINVAL;
    2382           0 :                         goto error;
    2383             :                 }
    2384             :         }
    2385             : 
    2386           1 :         key->tweak_mode = ACCEL_CRYPTO_TWEAK_MODE_DEFAULT;
    2387           1 :         if (param->tweak_mode) {
    2388           0 :                 found = false;
    2389             : 
    2390           0 :                 key->param.tweak_mode = strdup(param->tweak_mode);
    2391           0 :                 if (!key->param.tweak_mode) {
    2392           0 :                         rc = -ENOMEM;
    2393           0 :                         goto error;
    2394             :                 }
    2395             : 
    2396           0 :                 for (i = 0; i < SPDK_COUNTOF(g_tweak_modes); ++i) {
    2397           0 :                         assert(g_tweak_modes[i]);
    2398             : 
    2399           0 :                         if (strncmp(param->tweak_mode, g_tweak_modes[i], strlen(g_tweak_modes[i])) == 0) {
    2400           0 :                                 key->tweak_mode = i;
    2401           0 :                                 found = true;
    2402           0 :                                 break;
    2403             :                         }
    2404             :                 }
    2405             : 
    2406           0 :                 if (!found) {
    2407           0 :                         SPDK_ERRLOG("Failed to parse tweak mode\n");
    2408           0 :                         rc = -EINVAL;
    2409           0 :                         goto error;
    2410             :                 }
    2411             :         }
    2412             : 
    2413           1 :         if ((!module->crypto_supports_tweak_mode && key->tweak_mode != ACCEL_CRYPTO_TWEAK_MODE_DEFAULT) ||
    2414           1 :             (module->crypto_supports_tweak_mode && !module->crypto_supports_tweak_mode(key->tweak_mode))) {
    2415           0 :                 SPDK_ERRLOG("Module %s doesn't support %s tweak mode\n", module->name,
    2416             :                             g_tweak_modes[key->tweak_mode]);
    2417           0 :                 rc = -EINVAL;
    2418           0 :                 goto error;
    2419             :         }
    2420             : 
    2421           1 :         if (!module->crypto_supports_cipher(key->cipher, key->key_size)) {
    2422           0 :                 SPDK_ERRLOG("Module %s doesn't support %s cipher with %zu key size\n", module->name,
    2423             :                             g_ciphers[key->cipher], key->key_size);
    2424           0 :                 rc = -EINVAL;
    2425           0 :                 goto error;
    2426             :         }
    2427             : 
    2428           1 :         if (key->cipher == SPDK_ACCEL_CIPHER_AES_XTS) {
    2429           1 :                 if (!key->key2) {
    2430           0 :                         SPDK_ERRLOG("%s key2 is missing\n", g_ciphers[key->cipher]);
    2431           0 :                         rc = -EINVAL;
    2432           0 :                         goto error;
    2433             :                 }
    2434             : 
    2435           1 :                 if (key->key_size != key->key2_size) {
    2436           0 :                         SPDK_ERRLOG("%s key size %zu is not equal to key2 size %zu\n", g_ciphers[key->cipher],
    2437             :                                     key->key_size,
    2438             :                                     key->key2_size);
    2439           0 :                         rc = -EINVAL;
    2440           0 :                         goto error;
    2441             :                 }
    2442             : 
    2443           1 :                 if (accel_aes_xts_keys_equal(key->key, key->key_size, key->key2, key->key2_size)) {
    2444           0 :                         SPDK_ERRLOG("%s identical keys are not secure\n", g_ciphers[key->cipher]);
    2445           0 :                         rc = -EINVAL;
    2446           0 :                         goto error;
    2447             :                 }
    2448             :         }
    2449             : 
    2450           1 :         if (key->cipher == SPDK_ACCEL_CIPHER_AES_CBC) {
    2451           0 :                 if (key->key2_size) {
    2452           0 :                         SPDK_ERRLOG("%s doesn't use key2\n", g_ciphers[key->cipher]);
    2453           0 :                         rc = -EINVAL;
    2454           0 :                         goto error;
    2455             :                 }
    2456             :         }
    2457             : 
    2458           1 :         key->module_if = module;
    2459             : 
    2460           1 :         spdk_spin_lock(&g_keyring_spin);
    2461           1 :         if (_accel_crypto_key_get(param->key_name)) {
    2462           0 :                 rc = -EEXIST;
    2463             :         } else {
    2464           1 :                 rc = module->crypto_key_init(key);
    2465           1 :                 if (rc) {
    2466           0 :                         SPDK_ERRLOG("Module %s failed to initialize crypto key\n", module->name);
    2467             :                 } else {
    2468           1 :                         TAILQ_INSERT_TAIL(&g_keyring, key, link);
    2469             :                 }
    2470             :         }
    2471           1 :         spdk_spin_unlock(&g_keyring_spin);
    2472             : 
    2473           1 :         if (rc) {
    2474           0 :                 goto error;
    2475             :         }
    2476             : 
    2477           1 :         return 0;
    2478             : 
    2479           0 : error:
    2480           0 :         accel_crypto_key_free_mem(key);
    2481           0 :         return rc;
    2482             : }
    2483             : 
    2484             : int
    2485           1 : spdk_accel_crypto_key_destroy(struct spdk_accel_crypto_key *key)
    2486             : {
    2487           1 :         if (!key || !key->module_if) {
    2488           0 :                 return -EINVAL;
    2489             :         }
    2490             : 
    2491           1 :         spdk_spin_lock(&g_keyring_spin);
    2492           1 :         if (!_accel_crypto_key_get(key->param.key_name)) {
    2493           0 :                 spdk_spin_unlock(&g_keyring_spin);
    2494           0 :                 return -ENOENT;
    2495             :         }
    2496           1 :         TAILQ_REMOVE(&g_keyring, key, link);
    2497           1 :         spdk_spin_unlock(&g_keyring_spin);
    2498             : 
    2499           1 :         accel_crypto_key_destroy_unsafe(key);
    2500             : 
    2501           1 :         return 0;
    2502             : }
    2503             : 
    2504             : struct spdk_accel_crypto_key *
    2505           1 : spdk_accel_crypto_key_get(const char *name)
    2506             : {
    2507             :         struct spdk_accel_crypto_key *key;
    2508             : 
    2509           1 :         spdk_spin_lock(&g_keyring_spin);
    2510           1 :         key = _accel_crypto_key_get(name);
    2511           1 :         spdk_spin_unlock(&g_keyring_spin);
    2512             : 
    2513           1 :         return key;
    2514             : }
    2515             : 
    2516             : /* Helper function when accel modules register with the framework. */
    2517             : void
    2518           5 : spdk_accel_module_list_add(struct spdk_accel_module_if *accel_module)
    2519             : {
    2520             :         struct spdk_accel_module_if *tmp;
    2521             : 
    2522           5 :         if (_module_find_by_name(accel_module->name)) {
    2523           0 :                 SPDK_NOTICELOG("Module %s already registered\n", accel_module->name);
    2524           0 :                 assert(false);
    2525             :                 return;
    2526             :         }
    2527             : 
    2528           8 :         TAILQ_FOREACH(tmp, &spdk_accel_module_list, tailq) {
    2529           5 :                 if (accel_module->priority < tmp->priority) {
    2530           2 :                         break;
    2531             :                 }
    2532             :         }
    2533             : 
    2534           5 :         if (tmp != NULL) {
    2535           2 :                 TAILQ_INSERT_BEFORE(tmp, accel_module, tailq);
    2536             :         } else {
    2537           3 :                 TAILQ_INSERT_TAIL(&spdk_accel_module_list, accel_module, tailq);
    2538             :         }
    2539             : }
    2540             : 
    2541             : /* Framework level channel create callback. */
    2542             : static int
    2543          14 : accel_create_channel(void *io_device, void *ctx_buf)
    2544             : {
    2545          14 :         struct accel_io_channel *accel_ch = ctx_buf;
    2546             :         struct spdk_accel_task *accel_task;
    2547             :         struct spdk_accel_task_aux_data *accel_task_aux;
    2548             :         struct spdk_accel_sequence *seq;
    2549             :         struct accel_buffer *buf;
    2550             :         size_t task_size_aligned;
    2551             :         uint8_t *task_mem;
    2552          14 :         uint32_t i = 0, j;
    2553             :         int rc;
    2554             : 
    2555          14 :         task_size_aligned = SPDK_ALIGN_CEIL(g_max_accel_module_size, SPDK_CACHE_LINE_SIZE);
    2556          14 :         accel_ch->task_pool_base = aligned_alloc(SPDK_CACHE_LINE_SIZE,
    2557          14 :                                    g_opts.task_count * task_size_aligned);
    2558          14 :         if (!accel_ch->task_pool_base) {
    2559           0 :                 return -ENOMEM;
    2560             :         }
    2561          14 :         memset(accel_ch->task_pool_base, 0, g_opts.task_count * task_size_aligned);
    2562             : 
    2563          14 :         accel_ch->seq_pool_base = aligned_alloc(SPDK_CACHE_LINE_SIZE,
    2564          14 :                                                 g_opts.sequence_count * sizeof(struct spdk_accel_sequence));
    2565          14 :         if (accel_ch->seq_pool_base == NULL) {
    2566           0 :                 goto err;
    2567             :         }
    2568          14 :         memset(accel_ch->seq_pool_base, 0, g_opts.sequence_count * sizeof(struct spdk_accel_sequence));
    2569             : 
    2570          14 :         accel_ch->task_aux_data_base = calloc(g_opts.task_count, sizeof(struct spdk_accel_task_aux_data));
    2571          14 :         if (accel_ch->task_aux_data_base == NULL) {
    2572           0 :                 goto err;
    2573             :         }
    2574             : 
    2575          14 :         accel_ch->buf_pool_base = calloc(g_opts.buf_count, sizeof(struct accel_buffer));
    2576          14 :         if (accel_ch->buf_pool_base == NULL) {
    2577           0 :                 goto err;
    2578             :         }
    2579             : 
    2580          14 :         STAILQ_INIT(&accel_ch->task_pool);
    2581          14 :         SLIST_INIT(&accel_ch->task_aux_data_pool);
    2582          14 :         SLIST_INIT(&accel_ch->seq_pool);
    2583          14 :         SLIST_INIT(&accel_ch->buf_pool);
    2584             : 
    2585          14 :         task_mem = accel_ch->task_pool_base;
    2586       28686 :         for (i = 0; i < g_opts.task_count; i++) {
    2587       28672 :                 accel_task = (struct spdk_accel_task *)task_mem;
    2588       28672 :                 accel_task->aux = NULL;
    2589       28672 :                 STAILQ_INSERT_TAIL(&accel_ch->task_pool, accel_task, link);
    2590       28672 :                 task_mem += task_size_aligned;
    2591       28672 :                 accel_task_aux = &accel_ch->task_aux_data_base[i];
    2592       28672 :                 SLIST_INSERT_HEAD(&accel_ch->task_aux_data_pool, accel_task_aux, link);
    2593             :         }
    2594       28686 :         for (i = 0; i < g_opts.sequence_count; i++) {
    2595       28672 :                 seq = &accel_ch->seq_pool_base[i];
    2596       28672 :                 SLIST_INSERT_HEAD(&accel_ch->seq_pool, seq, link);
    2597             :         }
    2598       28686 :         for (i = 0; i < g_opts.buf_count; i++) {
    2599       28672 :                 buf = &accel_ch->buf_pool_base[i];
    2600       28672 :                 SLIST_INSERT_HEAD(&accel_ch->buf_pool, buf, link);
    2601             :         }
    2602             : 
    2603             :         /* Assign modules and get IO channels for each */
    2604         224 :         for (i = 0; i < SPDK_ACCEL_OPC_LAST; i++) {
    2605         210 :                 accel_ch->module_ch[i] = g_modules_opc[i].module->get_io_channel();
    2606             :                 /* This can happen if idxd runs out of channels. */
    2607         210 :                 if (accel_ch->module_ch[i] == NULL) {
    2608           0 :                         SPDK_ERRLOG("Module %s failed to get io channel\n", g_modules_opc[i].module->name);
    2609           0 :                         goto err;
    2610             :                 }
    2611             :         }
    2612             : 
    2613          14 :         if (g_accel_driver != NULL) {
    2614           0 :                 accel_ch->driver_channel = g_accel_driver->get_io_channel();
    2615           0 :                 if (accel_ch->driver_channel == NULL) {
    2616           0 :                         SPDK_ERRLOG("Failed to get driver's IO channel\n");
    2617           0 :                         goto err;
    2618             :                 }
    2619             :         }
    2620             : 
    2621          14 :         rc = spdk_iobuf_channel_init(&accel_ch->iobuf, "accel", g_opts.small_cache_size,
    2622             :                                      g_opts.large_cache_size);
    2623          14 :         if (rc != 0) {
    2624           0 :                 SPDK_ERRLOG("Failed to initialize iobuf accel channel\n");
    2625           0 :                 goto err;
    2626             :         }
    2627             : 
    2628          14 :         return 0;
    2629           0 : err:
    2630           0 :         if (accel_ch->driver_channel != NULL) {
    2631           0 :                 spdk_put_io_channel(accel_ch->driver_channel);
    2632             :         }
    2633           0 :         for (j = 0; j < i; j++) {
    2634           0 :                 spdk_put_io_channel(accel_ch->module_ch[j]);
    2635             :         }
    2636           0 :         free(accel_ch->task_pool_base);
    2637           0 :         free(accel_ch->task_aux_data_base);
    2638           0 :         free(accel_ch->seq_pool_base);
    2639           0 :         free(accel_ch->buf_pool_base);
    2640             : 
    2641           0 :         return -ENOMEM;
    2642             : }
    2643             : 
    2644             : static void
    2645          14 : accel_add_stats(struct accel_stats *total, struct accel_stats *stats)
    2646             : {
    2647             :         int i;
    2648             : 
    2649          14 :         total->sequence_executed += stats->sequence_executed;
    2650          14 :         total->sequence_failed += stats->sequence_failed;
    2651          14 :         total->sequence_outstanding += stats->sequence_outstanding;
    2652          14 :         total->task_outstanding += stats->task_outstanding;
    2653          14 :         total->retry.task += stats->retry.task;
    2654          14 :         total->retry.sequence += stats->retry.sequence;
    2655          14 :         total->retry.iobuf += stats->retry.iobuf;
    2656          14 :         total->retry.bufdesc += stats->retry.bufdesc;
    2657         224 :         for (i = 0; i < SPDK_ACCEL_OPC_LAST; ++i) {
    2658         210 :                 total->operations[i].executed += stats->operations[i].executed;
    2659         210 :                 total->operations[i].failed += stats->operations[i].failed;
    2660         210 :                 total->operations[i].num_bytes += stats->operations[i].num_bytes;
    2661             :         }
    2662          14 : }
    2663             : 
    2664             : /* Framework level channel destroy callback. */
    2665             : static void
    2666          14 : accel_destroy_channel(void *io_device, void *ctx_buf)
    2667             : {
    2668          14 :         struct accel_io_channel *accel_ch = ctx_buf;
    2669             :         int i;
    2670             : 
    2671          14 :         spdk_iobuf_channel_fini(&accel_ch->iobuf);
    2672             : 
    2673          14 :         if (accel_ch->driver_channel != NULL) {
    2674           0 :                 spdk_put_io_channel(accel_ch->driver_channel);
    2675             :         }
    2676             : 
    2677         224 :         for (i = 0; i < SPDK_ACCEL_OPC_LAST; i++) {
    2678         210 :                 assert(accel_ch->module_ch[i] != NULL);
    2679         210 :                 spdk_put_io_channel(accel_ch->module_ch[i]);
    2680         210 :                 accel_ch->module_ch[i] = NULL;
    2681             :         }
    2682             : 
    2683             :         /* Update global stats to make sure channel's stats aren't lost after a channel is gone */
    2684          14 :         spdk_spin_lock(&g_stats_lock);
    2685          14 :         accel_add_stats(&g_stats, &accel_ch->stats);
    2686          14 :         spdk_spin_unlock(&g_stats_lock);
    2687             : 
    2688          14 :         free(accel_ch->task_pool_base);
    2689          14 :         free(accel_ch->task_aux_data_base);
    2690          14 :         free(accel_ch->seq_pool_base);
    2691          14 :         free(accel_ch->buf_pool_base);
    2692          14 : }
    2693             : 
    2694             : struct spdk_io_channel *
    2695          14 : spdk_accel_get_io_channel(void)
    2696             : {
    2697          14 :         return spdk_get_io_channel(&spdk_accel_module_list);
    2698             : }
    2699             : 
    2700             : static int
    2701           2 : accel_module_initialize(void)
    2702             : {
    2703             :         struct spdk_accel_module_if *accel_module, *tmp_module;
    2704           2 :         int rc = 0, module_rc;
    2705             : 
    2706           7 :         TAILQ_FOREACH_SAFE(accel_module, &spdk_accel_module_list, tailq, tmp_module) {
    2707           5 :                 module_rc = accel_module->module_init();
    2708           5 :                 if (module_rc) {
    2709           0 :                         TAILQ_REMOVE(&spdk_accel_module_list, accel_module, tailq);
    2710           0 :                         if (module_rc == -ENODEV) {
    2711           0 :                                 SPDK_NOTICELOG("No devices for module %s, skipping\n", accel_module->name);
    2712           0 :                         } else if (!rc) {
    2713           0 :                                 SPDK_ERRLOG("Module %s initialization failed with %d\n", accel_module->name, module_rc);
    2714           0 :                                 rc = module_rc;
    2715             :                         }
    2716           0 :                         continue;
    2717             :                 }
    2718             : 
    2719           5 :                 SPDK_DEBUGLOG(accel, "Module %s initialized.\n", accel_module->name);
    2720             :         }
    2721             : 
    2722           2 :         return rc;
    2723             : }
    2724             : 
    2725             : static void
    2726          30 : accel_module_init_opcode(enum spdk_accel_opcode opcode)
    2727             : {
    2728          30 :         struct accel_module *module = &g_modules_opc[opcode];
    2729          30 :         struct spdk_accel_module_if *module_if = module->module;
    2730             : 
    2731          30 :         if (module_if->get_memory_domains != NULL) {
    2732           0 :                 module->supports_memory_domains = module_if->get_memory_domains(NULL, 0) > 0;
    2733             :         }
    2734          30 : }
    2735             : 
    2736             : static int
    2737           0 : accel_memory_domain_translate(struct spdk_memory_domain *src_domain, void *src_domain_ctx,
    2738             :                               struct spdk_memory_domain *dst_domain, struct spdk_memory_domain_translation_ctx *dst_domain_ctx,
    2739             :                               void *addr, size_t len, struct spdk_memory_domain_translation_result *result)
    2740             : {
    2741           0 :         struct accel_buffer *buf = src_domain_ctx;
    2742             : 
    2743           0 :         SPDK_DEBUGLOG(accel, "translate addr %p, len %zu\n", addr, len);
    2744             : 
    2745           0 :         assert(g_accel_domain == src_domain);
    2746           0 :         assert(spdk_memory_domain_get_system_domain() == dst_domain);
    2747           0 :         assert(buf->buf == NULL);
    2748           0 :         assert(addr == ACCEL_BUFFER_BASE);
    2749           0 :         assert(len == buf->len);
    2750             : 
    2751           0 :         buf->buf = spdk_iobuf_get(&buf->ch->iobuf, buf->len, NULL, NULL);
    2752           0 :         if (spdk_unlikely(buf->buf == NULL)) {
    2753           0 :                 return -ENOMEM;
    2754             :         }
    2755             : 
    2756           0 :         result->iov_count = 1;
    2757           0 :         result->iov.iov_base = buf->buf;
    2758           0 :         result->iov.iov_len = buf->len;
    2759           0 :         SPDK_DEBUGLOG(accel, "translated addr %p\n", result->iov.iov_base);
    2760           0 :         return 0;
    2761             : }
    2762             : 
    2763             : static void
    2764           0 : accel_memory_domain_invalidate(struct spdk_memory_domain *domain, void *domain_ctx,
    2765             :                                struct iovec *iov, uint32_t iovcnt)
    2766             : {
    2767           0 :         struct accel_buffer *buf = domain_ctx;
    2768             : 
    2769           0 :         SPDK_DEBUGLOG(accel, "invalidate addr %p, len %zu\n", iov[0].iov_base, iov[0].iov_len);
    2770             : 
    2771           0 :         assert(g_accel_domain == domain);
    2772           0 :         assert(iovcnt == 1);
    2773           0 :         assert(buf->buf != NULL);
    2774           0 :         assert(iov[0].iov_base == buf->buf);
    2775           0 :         assert(iov[0].iov_len == buf->len);
    2776             : 
    2777           0 :         spdk_iobuf_put(&buf->ch->iobuf, buf->buf, buf->len);
    2778           0 :         buf->buf = NULL;
    2779           0 : }
    2780             : 
    2781             : int
    2782           2 : spdk_accel_initialize(void)
    2783             : {
    2784             :         enum spdk_accel_opcode op;
    2785           2 :         struct spdk_accel_module_if *accel_module = NULL;
    2786             :         int rc;
    2787             : 
    2788             :         /*
    2789             :          * We need a unique identifier for the accel framework, so use the
    2790             :          * spdk_accel_module_list address for this purpose.
    2791             :          */
    2792           2 :         spdk_io_device_register(&spdk_accel_module_list, accel_create_channel, accel_destroy_channel,
    2793             :                                 sizeof(struct accel_io_channel), "accel");
    2794             : 
    2795           2 :         spdk_spin_init(&g_keyring_spin);
    2796           2 :         spdk_spin_init(&g_stats_lock);
    2797             : 
    2798           2 :         rc = spdk_memory_domain_create(&g_accel_domain, SPDK_DMA_DEVICE_TYPE_ACCEL, NULL,
    2799             :                                        "SPDK_ACCEL_DMA_DEVICE");
    2800           2 :         if (rc != 0) {
    2801           0 :                 SPDK_ERRLOG("Failed to create accel memory domain\n");
    2802           0 :                 return rc;
    2803             :         }
    2804             : 
    2805           2 :         spdk_memory_domain_set_translation(g_accel_domain, accel_memory_domain_translate);
    2806           2 :         spdk_memory_domain_set_invalidate(g_accel_domain, accel_memory_domain_invalidate);
    2807             : 
    2808           2 :         g_modules_started = true;
    2809           2 :         rc = accel_module_initialize();
    2810           2 :         if (rc) {
    2811           0 :                 return rc;
    2812             :         }
    2813             : 
    2814           2 :         if (g_accel_driver != NULL && g_accel_driver->init != NULL) {
    2815           0 :                 rc = g_accel_driver->init();
    2816           0 :                 if (rc != 0) {
    2817           0 :                         SPDK_ERRLOG("Failed to initialize driver %s: %s\n", g_accel_driver->name,
    2818             :                                     spdk_strerror(-rc));
    2819           0 :                         return rc;
    2820             :                 }
    2821             :         }
    2822             : 
    2823             :         /* The module list is order by priority, with the highest priority modules being at the end
    2824             :          * of the list.  The software module should be somewhere at the beginning of the list,
    2825             :          * before all HW modules.
    2826             :          * NOTE: all opcodes must be supported by software in the event that no HW modules are
    2827             :          * initialized to support the operation.
    2828             :          */
    2829           7 :         TAILQ_FOREACH(accel_module, &spdk_accel_module_list, tailq) {
    2830          80 :                 for (op = 0; op < SPDK_ACCEL_OPC_LAST; op++) {
    2831          75 :                         if (accel_module->supports_opcode(op)) {
    2832          75 :                                 g_modules_opc[op].module = accel_module;
    2833          75 :                                 SPDK_DEBUGLOG(accel, "OPC 0x%x now assigned to %s\n", op, accel_module->name);
    2834             :                         }
    2835             :                 }
    2836             : 
    2837           5 :                 if (accel_module->get_ctx_size != NULL) {
    2838           1 :                         g_max_accel_module_size = spdk_max(g_max_accel_module_size,
    2839             :                                                            accel_module->get_ctx_size());
    2840             :                 }
    2841             :         }
    2842             : 
    2843             :         /* Now lets check for overrides and apply all that exist */
    2844          32 :         for (op = 0; op < SPDK_ACCEL_OPC_LAST; op++) {
    2845          30 :                 if (g_modules_opc_override[op] != NULL) {
    2846           0 :                         accel_module = _module_find_by_name(g_modules_opc_override[op]);
    2847           0 :                         if (accel_module == NULL) {
    2848           0 :                                 SPDK_ERRLOG("Invalid module name of %s\n", g_modules_opc_override[op]);
    2849           0 :                                 return -EINVAL;
    2850             :                         }
    2851           0 :                         if (accel_module->supports_opcode(op) == false) {
    2852           0 :                                 SPDK_ERRLOG("Module %s does not support op code %d\n", accel_module->name, op);
    2853           0 :                                 return -EINVAL;
    2854             :                         }
    2855           0 :                         g_modules_opc[op].module = accel_module;
    2856             :                 }
    2857             :         }
    2858             : 
    2859           2 :         if (g_modules_opc[SPDK_ACCEL_OPC_ENCRYPT].module != g_modules_opc[SPDK_ACCEL_OPC_DECRYPT].module) {
    2860           0 :                 SPDK_ERRLOG("Different accel modules are assigned to encrypt and decrypt operations");
    2861           0 :                 return -EINVAL;
    2862             :         }
    2863             : 
    2864          32 :         for (op = 0; op < SPDK_ACCEL_OPC_LAST; op++) {
    2865          30 :                 assert(g_modules_opc[op].module != NULL);
    2866          30 :                 accel_module_init_opcode(op);
    2867             :         }
    2868             : 
    2869           2 :         rc = spdk_iobuf_register_module("accel");
    2870           2 :         if (rc != 0) {
    2871           0 :                 SPDK_ERRLOG("Failed to register accel iobuf module\n");
    2872           0 :                 return rc;
    2873             :         }
    2874             : 
    2875           2 :         return 0;
    2876             : }
    2877             : 
    2878             : static void
    2879           2 : accel_module_finish_cb(void)
    2880             : {
    2881           2 :         spdk_accel_fini_cb cb_fn = g_fini_cb_fn;
    2882             : 
    2883           2 :         cb_fn(g_fini_cb_arg);
    2884           2 :         g_fini_cb_fn = NULL;
    2885           2 :         g_fini_cb_arg = NULL;
    2886           2 : }
    2887             : 
    2888             : static void
    2889           0 : accel_write_overridden_opc(struct spdk_json_write_ctx *w, const char *opc_str,
    2890             :                            const char *module_str)
    2891             : {
    2892           0 :         spdk_json_write_object_begin(w);
    2893           0 :         spdk_json_write_named_string(w, "method", "accel_assign_opc");
    2894           0 :         spdk_json_write_named_object_begin(w, "params");
    2895           0 :         spdk_json_write_named_string(w, "opname", opc_str);
    2896           0 :         spdk_json_write_named_string(w, "module", module_str);
    2897           0 :         spdk_json_write_object_end(w);
    2898           0 :         spdk_json_write_object_end(w);
    2899           0 : }
    2900             : 
    2901             : static 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_named_string(w, "name", key->param.key_name);
    2905           0 :         spdk_json_write_named_string(w, "cipher", key->param.cipher);
    2906           0 :         spdk_json_write_named_string(w, "key", key->param.hex_key);
    2907           0 :         if (key->param.hex_key2) {
    2908           0 :                 spdk_json_write_named_string(w, "key2", key->param.hex_key2);
    2909             :         }
    2910             : 
    2911           0 :         if (key->param.tweak_mode) {
    2912           0 :                 spdk_json_write_named_string(w, "tweak_mode", key->param.tweak_mode);
    2913             :         }
    2914           0 : }
    2915             : 
    2916             : void
    2917           0 : _accel_crypto_key_dump_param(struct spdk_json_write_ctx *w, struct spdk_accel_crypto_key *key)
    2918             : {
    2919           0 :         spdk_json_write_object_begin(w);
    2920           0 :         __accel_crypto_key_dump_param(w, key);
    2921           0 :         spdk_json_write_object_end(w);
    2922           0 : }
    2923             : 
    2924             : static void
    2925           0 : _accel_crypto_key_write_config_json(struct spdk_json_write_ctx *w,
    2926             :                                     struct spdk_accel_crypto_key *key)
    2927             : {
    2928           0 :         spdk_json_write_object_begin(w);
    2929           0 :         spdk_json_write_named_string(w, "method", "accel_crypto_key_create");
    2930           0 :         spdk_json_write_named_object_begin(w, "params");
    2931           0 :         __accel_crypto_key_dump_param(w, key);
    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_write_options(struct spdk_json_write_ctx *w)
    2938             : {
    2939           0 :         spdk_json_write_object_begin(w);
    2940           0 :         spdk_json_write_named_string(w, "method", "accel_set_options");
    2941           0 :         spdk_json_write_named_object_begin(w, "params");
    2942           0 :         spdk_json_write_named_uint32(w, "small_cache_size", g_opts.small_cache_size);
    2943           0 :         spdk_json_write_named_uint32(w, "large_cache_size", g_opts.large_cache_size);
    2944           0 :         spdk_json_write_named_uint32(w, "task_count", g_opts.task_count);
    2945           0 :         spdk_json_write_named_uint32(w, "sequence_count", g_opts.sequence_count);
    2946           0 :         spdk_json_write_named_uint32(w, "buf_count", g_opts.buf_count);
    2947           0 :         spdk_json_write_object_end(w);
    2948           0 :         spdk_json_write_object_end(w);
    2949           0 : }
    2950             : 
    2951             : static void
    2952           0 : _accel_crypto_keys_write_config_json(struct spdk_json_write_ctx *w, bool full_dump)
    2953             : {
    2954             :         struct spdk_accel_crypto_key *key;
    2955             : 
    2956           0 :         spdk_spin_lock(&g_keyring_spin);
    2957           0 :         TAILQ_FOREACH(key, &g_keyring, link) {
    2958           0 :                 if (full_dump) {
    2959           0 :                         _accel_crypto_key_write_config_json(w, key);
    2960             :                 } else {
    2961           0 :                         _accel_crypto_key_dump_param(w, key);
    2962             :                 }
    2963             :         }
    2964           0 :         spdk_spin_unlock(&g_keyring_spin);
    2965           0 : }
    2966             : 
    2967             : void
    2968           0 : _accel_crypto_keys_dump_param(struct spdk_json_write_ctx *w)
    2969             : {
    2970           0 :         _accel_crypto_keys_write_config_json(w, false);
    2971           0 : }
    2972             : 
    2973             : void
    2974           0 : spdk_accel_write_config_json(struct spdk_json_write_ctx *w)
    2975             : {
    2976             :         struct spdk_accel_module_if *accel_module;
    2977             :         int i;
    2978             : 
    2979           0 :         spdk_json_write_array_begin(w);
    2980           0 :         accel_write_options(w);
    2981             : 
    2982           0 :         TAILQ_FOREACH(accel_module, &spdk_accel_module_list, tailq) {
    2983           0 :                 if (accel_module->write_config_json) {
    2984           0 :                         accel_module->write_config_json(w);
    2985             :                 }
    2986             :         }
    2987           0 :         for (i = 0; i < SPDK_ACCEL_OPC_LAST; i++) {
    2988           0 :                 if (g_modules_opc_override[i]) {
    2989           0 :                         accel_write_overridden_opc(w, g_opcode_strings[i], g_modules_opc_override[i]);
    2990             :                 }
    2991             :         }
    2992             : 
    2993           0 :         _accel_crypto_keys_write_config_json(w, true);
    2994             : 
    2995           0 :         spdk_json_write_array_end(w);
    2996           0 : }
    2997             : 
    2998             : void
    2999           7 : spdk_accel_module_finish(void)
    3000             : {
    3001           7 :         if (!g_accel_module) {
    3002           2 :                 g_accel_module = TAILQ_FIRST(&spdk_accel_module_list);
    3003             :         } else {
    3004           5 :                 g_accel_module = TAILQ_NEXT(g_accel_module, tailq);
    3005             :         }
    3006             : 
    3007           7 :         if (!g_accel_module) {
    3008           2 :                 if (g_accel_driver != NULL && g_accel_driver->fini != NULL) {
    3009           0 :                         g_accel_driver->fini();
    3010             :                 }
    3011             : 
    3012           2 :                 spdk_spin_destroy(&g_keyring_spin);
    3013           2 :                 spdk_spin_destroy(&g_stats_lock);
    3014           2 :                 if (g_accel_domain) {
    3015           2 :                         spdk_memory_domain_destroy(g_accel_domain);
    3016           2 :                         g_accel_domain = NULL;
    3017             :                 }
    3018           2 :                 accel_module_finish_cb();
    3019           2 :                 return;
    3020             :         }
    3021             : 
    3022           5 :         if (g_accel_module->module_fini) {
    3023           1 :                 spdk_thread_send_msg(spdk_get_thread(), g_accel_module->module_fini, NULL);
    3024             :         } else {
    3025           4 :                 spdk_accel_module_finish();
    3026             :         }
    3027             : }
    3028             : 
    3029             : static void
    3030           2 : accel_io_device_unregister_cb(void *io_device)
    3031             : {
    3032             :         struct spdk_accel_crypto_key *key, *key_tmp;
    3033             :         enum spdk_accel_opcode op;
    3034             : 
    3035           2 :         spdk_spin_lock(&g_keyring_spin);
    3036           2 :         TAILQ_FOREACH_SAFE(key, &g_keyring, link, key_tmp) {
    3037           0 :                 accel_crypto_key_destroy_unsafe(key);
    3038             :         }
    3039           2 :         spdk_spin_unlock(&g_keyring_spin);
    3040             : 
    3041          32 :         for (op = 0; op < SPDK_ACCEL_OPC_LAST; op++) {
    3042          30 :                 if (g_modules_opc_override[op] != NULL) {
    3043           0 :                         free(g_modules_opc_override[op]);
    3044           0 :                         g_modules_opc_override[op] = NULL;
    3045             :                 }
    3046          30 :                 g_modules_opc[op].module = NULL;
    3047             :         }
    3048             : 
    3049           2 :         spdk_accel_module_finish();
    3050           2 : }
    3051             : 
    3052             : void
    3053           2 : spdk_accel_finish(spdk_accel_fini_cb cb_fn, void *cb_arg)
    3054             : {
    3055           2 :         assert(cb_fn != NULL);
    3056             : 
    3057           2 :         g_fini_cb_fn = cb_fn;
    3058           2 :         g_fini_cb_arg = cb_arg;
    3059             : 
    3060           2 :         spdk_io_device_unregister(&spdk_accel_module_list, accel_io_device_unregister_cb);
    3061           2 : }
    3062             : 
    3063             : static struct spdk_accel_driver *
    3064           2 : accel_find_driver(const char *name)
    3065             : {
    3066             :         struct spdk_accel_driver *driver;
    3067             : 
    3068           2 :         TAILQ_FOREACH(driver, &g_accel_drivers, tailq) {
    3069           1 :                 if (strcmp(driver->name, name) == 0) {
    3070           1 :                         return driver;
    3071             :                 }
    3072             :         }
    3073             : 
    3074           1 :         return NULL;
    3075             : }
    3076             : 
    3077             : int
    3078           1 : spdk_accel_set_driver(const char *name)
    3079             : {
    3080             :         struct spdk_accel_driver *driver;
    3081             : 
    3082           1 :         driver = accel_find_driver(name);
    3083           1 :         if (driver == NULL) {
    3084           0 :                 SPDK_ERRLOG("Couldn't find driver named '%s'\n", name);
    3085           0 :                 return -ENODEV;
    3086             :         }
    3087             : 
    3088           1 :         g_accel_driver = driver;
    3089             : 
    3090           1 :         return 0;
    3091             : }
    3092             : 
    3093             : const char *
    3094           0 : spdk_accel_get_driver_name(void)
    3095             : {
    3096           0 :         if (!g_accel_driver) {
    3097           0 :                 return NULL;
    3098             :         }
    3099             : 
    3100           0 :         return g_accel_driver->name;
    3101             : }
    3102             : 
    3103             : void
    3104           1 : spdk_accel_driver_register(struct spdk_accel_driver *driver)
    3105             : {
    3106           1 :         if (accel_find_driver(driver->name)) {
    3107           0 :                 SPDK_ERRLOG("Driver named '%s' has already been registered\n", driver->name);
    3108           0 :                 assert(0);
    3109             :                 return;
    3110             :         }
    3111             : 
    3112           1 :         TAILQ_INSERT_TAIL(&g_accel_drivers, driver, tailq);
    3113             : }
    3114             : 
    3115             : int
    3116           0 : spdk_accel_set_opts(const struct spdk_accel_opts *opts)
    3117             : {
    3118           0 :         if (!opts) {
    3119           0 :                 SPDK_ERRLOG("opts cannot be NULL\n");
    3120           0 :                 return -1;
    3121             :         }
    3122             : 
    3123           0 :         if (!opts->opts_size) {
    3124           0 :                 SPDK_ERRLOG("opts_size inside opts cannot be zero value\n");
    3125           0 :                 return -1;
    3126             :         }
    3127             : 
    3128           0 :         if (SPDK_GET_FIELD(opts, task_count, g_opts.task_count,
    3129           0 :                            opts->opts_size) < ACCEL_TASKS_IN_SEQUENCE_LIMIT) {
    3130           0 :                 return -EINVAL;
    3131             :         }
    3132             : 
    3133             : #define SET_FIELD(field) \
    3134             :         if (offsetof(struct spdk_accel_opts, field) + sizeof(opts->field) <= opts->opts_size) { \
    3135             :                 g_opts.field = opts->field; \
    3136             :         } \
    3137             : 
    3138           0 :         SET_FIELD(small_cache_size);
    3139           0 :         SET_FIELD(large_cache_size);
    3140           0 :         SET_FIELD(task_count);
    3141           0 :         SET_FIELD(sequence_count);
    3142           0 :         SET_FIELD(buf_count);
    3143             : 
    3144           0 :         g_opts.opts_size = opts->opts_size;
    3145             : 
    3146             : #undef SET_FIELD
    3147             : 
    3148           0 :         return 0;
    3149             : }
    3150             : 
    3151             : void
    3152           0 : spdk_accel_get_opts(struct spdk_accel_opts *opts, size_t opts_size)
    3153             : {
    3154           0 :         if (!opts) {
    3155           0 :                 SPDK_ERRLOG("opts should not be NULL\n");
    3156           0 :                 return;
    3157             :         }
    3158             : 
    3159           0 :         if (!opts_size) {
    3160           0 :                 SPDK_ERRLOG("opts_size should not be zero value\n");
    3161           0 :                 return;
    3162             :         }
    3163             : 
    3164           0 :         opts->opts_size = opts_size;
    3165             : 
    3166             : #define SET_FIELD(field) \
    3167             :         if (offsetof(struct spdk_accel_opts, field) + sizeof(opts->field) <= opts_size) { \
    3168             :                 opts->field = g_opts.field; \
    3169             :         } \
    3170             : 
    3171           0 :         SET_FIELD(small_cache_size);
    3172           0 :         SET_FIELD(large_cache_size);
    3173           0 :         SET_FIELD(task_count);
    3174           0 :         SET_FIELD(sequence_count);
    3175           0 :         SET_FIELD(buf_count);
    3176             : 
    3177             : #undef SET_FIELD
    3178             : 
    3179             :         /* Do not remove this statement, you should always update this statement when you adding a new field,
    3180             :          * and do not forget to add the SET_FIELD statement for your added field. */
    3181             :         SPDK_STATIC_ASSERT(sizeof(struct spdk_accel_opts) == 28, "Incorrect size");
    3182             : }
    3183             : 
    3184             : struct accel_get_stats_ctx {
    3185             :         struct accel_stats      stats;
    3186             :         accel_get_stats_cb      cb_fn;
    3187             :         void                    *cb_arg;
    3188             : };
    3189             : 
    3190             : static void
    3191           0 : accel_get_channel_stats_done(struct spdk_io_channel_iter *iter, int status)
    3192             : {
    3193           0 :         struct accel_get_stats_ctx *ctx = spdk_io_channel_iter_get_ctx(iter);
    3194             : 
    3195           0 :         ctx->cb_fn(&ctx->stats, ctx->cb_arg);
    3196           0 :         free(ctx);
    3197           0 : }
    3198             : 
    3199             : static void
    3200           0 : accel_get_channel_stats(struct spdk_io_channel_iter *iter)
    3201             : {
    3202           0 :         struct spdk_io_channel *ch = spdk_io_channel_iter_get_channel(iter);
    3203           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    3204           0 :         struct accel_get_stats_ctx *ctx = spdk_io_channel_iter_get_ctx(iter);
    3205             : 
    3206           0 :         accel_add_stats(&ctx->stats, &accel_ch->stats);
    3207           0 :         spdk_for_each_channel_continue(iter, 0);
    3208           0 : }
    3209             : 
    3210             : int
    3211           0 : accel_get_stats(accel_get_stats_cb cb_fn, void *cb_arg)
    3212             : {
    3213             :         struct accel_get_stats_ctx *ctx;
    3214             : 
    3215           0 :         ctx = calloc(1, sizeof(*ctx));
    3216           0 :         if (ctx == NULL) {
    3217           0 :                 return -ENOMEM;
    3218             :         }
    3219             : 
    3220           0 :         spdk_spin_lock(&g_stats_lock);
    3221           0 :         accel_add_stats(&ctx->stats, &g_stats);
    3222           0 :         spdk_spin_unlock(&g_stats_lock);
    3223             : 
    3224           0 :         ctx->cb_fn = cb_fn;
    3225           0 :         ctx->cb_arg = cb_arg;
    3226             : 
    3227           0 :         spdk_for_each_channel(&spdk_accel_module_list, accel_get_channel_stats, ctx,
    3228             :                               accel_get_channel_stats_done);
    3229             : 
    3230           0 :         return 0;
    3231             : }
    3232             : 
    3233             : void
    3234           0 : spdk_accel_get_opcode_stats(struct spdk_io_channel *ch, enum spdk_accel_opcode opcode,
    3235             :                             struct spdk_accel_opcode_stats *stats, size_t size)
    3236             : {
    3237           0 :         struct accel_io_channel *accel_ch = spdk_io_channel_get_ctx(ch);
    3238             : 
    3239             : #define FIELD_OK(field) \
    3240             :         offsetof(struct spdk_accel_opcode_stats, field) + sizeof(stats->field) <= size
    3241             : 
    3242             : #define SET_FIELD(field, value) \
    3243             :         if (FIELD_OK(field)) { \
    3244             :                 stats->field = value; \
    3245             :         }
    3246             : 
    3247           0 :         SET_FIELD(executed, accel_ch->stats.operations[opcode].executed);
    3248           0 :         SET_FIELD(failed, accel_ch->stats.operations[opcode].failed);
    3249           0 :         SET_FIELD(num_bytes, accel_ch->stats.operations[opcode].num_bytes);
    3250             : 
    3251             : #undef FIELD_OK
    3252             : #undef SET_FIELD
    3253           0 : }
    3254             : 
    3255             : uint8_t
    3256           0 : spdk_accel_get_buf_align(enum spdk_accel_opcode opcode,
    3257             :                          const struct spdk_accel_operation_exec_ctx *ctx)
    3258             : {
    3259           0 :         struct spdk_accel_module_if *module = g_modules_opc[opcode].module;
    3260           0 :         struct spdk_accel_opcode_info modinfo = {}, drvinfo = {};
    3261             : 
    3262           0 :         if (g_accel_driver != NULL && g_accel_driver->get_operation_info != NULL) {
    3263           0 :                 g_accel_driver->get_operation_info(opcode, ctx, &drvinfo);
    3264             :         }
    3265             : 
    3266           0 :         if (module->get_operation_info != NULL) {
    3267           0 :                 module->get_operation_info(opcode, ctx, &modinfo);
    3268             :         }
    3269             : 
    3270             :         /* If a driver is set, it'll execute most of the operations, while the rest will usually
    3271             :          * fall back to accel_sw, which doesn't have any alignment requiremenets.  However, to be
    3272             :          * extra safe, return the max(driver, module) if a driver delegates some operations to a
    3273             :          * hardware module. */
    3274           0 :         return spdk_max(modinfo.required_alignment, drvinfo.required_alignment);
    3275             : }
    3276             : 
    3277             : struct spdk_accel_module_if *
    3278           0 : spdk_accel_get_module(const char *name)
    3279             : {
    3280             :         struct spdk_accel_module_if *module;
    3281             : 
    3282           0 :         TAILQ_FOREACH(module, &spdk_accel_module_list, tailq) {
    3283           0 :                 if (strcmp(module->name, name) == 0) {
    3284           0 :                         return module;
    3285             :                 }
    3286             :         }
    3287             : 
    3288           0 :         return NULL;
    3289             : }
    3290             : 
    3291             : int
    3292           0 : spdk_accel_get_opc_memory_domains(enum spdk_accel_opcode opcode,
    3293             :                                   struct spdk_memory_domain **domains,
    3294             :                                   int array_size)
    3295             : {
    3296           0 :         assert(opcode < SPDK_ACCEL_OPC_LAST);
    3297             : 
    3298           0 :         if (g_modules_opc[opcode].module->get_memory_domains) {
    3299           0 :                 return g_modules_opc[opcode].module->get_memory_domains(domains, array_size);
    3300             :         }
    3301             : 
    3302           0 :         return 0;
    3303             : }
    3304             : 
    3305           1 : SPDK_LOG_REGISTER_COMPONENT(accel)

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