1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright (C) 2017 Intel Corporation. All rights reserved. 3 * Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved. 4 * Copyright (c) 2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved. 5 */ 6 7 #include "spdk/stdinc.h" 8 9 #include "nvmf_internal.h" 10 11 #include "spdk/bdev.h" 12 #include "spdk/endian.h" 13 #include "spdk/thread.h" 14 #include "spdk/likely.h" 15 #include "spdk/nvme.h" 16 #include "spdk/nvmf_cmd.h" 17 #include "spdk/nvmf_spec.h" 18 #include "spdk/trace.h" 19 #include "spdk/scsi_spec.h" 20 #include "spdk/string.h" 21 #include "spdk/util.h" 22 23 #include "spdk/log.h" 24 25 static bool 26 nvmf_subsystem_bdev_io_type_supported(struct spdk_nvmf_subsystem *subsystem, 27 enum spdk_bdev_io_type io_type) 28 { 29 struct spdk_nvmf_ns *ns; 30 31 for (ns = spdk_nvmf_subsystem_get_first_ns(subsystem); ns != NULL; 32 ns = spdk_nvmf_subsystem_get_next_ns(subsystem, ns)) { 33 if (ns->bdev == NULL) { 34 continue; 35 } 36 37 if (!spdk_bdev_io_type_supported(ns->bdev, io_type)) { 38 SPDK_DEBUGLOG(nvmf, 39 "Subsystem %s namespace %u (%s) does not support io_type %d\n", 40 spdk_nvmf_subsystem_get_nqn(subsystem), 41 ns->opts.nsid, spdk_bdev_get_name(ns->bdev), (int)io_type); 42 return false; 43 } 44 } 45 46 SPDK_DEBUGLOG(nvmf, "All devices in Subsystem %s support io_type %d\n", 47 spdk_nvmf_subsystem_get_nqn(subsystem), (int)io_type); 48 return true; 49 } 50 51 bool 52 nvmf_ctrlr_dsm_supported(struct spdk_nvmf_ctrlr *ctrlr) 53 { 54 return nvmf_subsystem_bdev_io_type_supported(ctrlr->subsys, SPDK_BDEV_IO_TYPE_UNMAP); 55 } 56 57 bool 58 nvmf_ctrlr_write_zeroes_supported(struct spdk_nvmf_ctrlr *ctrlr) 59 { 60 return nvmf_subsystem_bdev_io_type_supported(ctrlr->subsys, SPDK_BDEV_IO_TYPE_WRITE_ZEROES); 61 } 62 63 bool 64 nvmf_ctrlr_copy_supported(struct spdk_nvmf_ctrlr *ctrlr) 65 { 66 return nvmf_subsystem_bdev_io_type_supported(ctrlr->subsys, SPDK_BDEV_IO_TYPE_COPY); 67 } 68 69 static void 70 nvmf_bdev_ctrlr_complete_cmd(struct spdk_bdev_io *bdev_io, bool success, 71 void *cb_arg) 72 { 73 struct spdk_nvmf_request *req = cb_arg; 74 struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; 75 int sc = 0, sct = 0; 76 uint32_t cdw0 = 0; 77 78 if (spdk_unlikely(req->first_fused)) { 79 struct spdk_nvmf_request *first_req = req->first_fused_req; 80 struct spdk_nvme_cpl *first_response = &first_req->rsp->nvme_cpl; 81 int first_sc = 0, first_sct = 0; 82 83 /* get status for both operations */ 84 spdk_bdev_io_get_nvme_fused_status(bdev_io, &cdw0, &first_sct, &first_sc, &sct, &sc); 85 first_response->cdw0 = cdw0; 86 first_response->status.sc = first_sc; 87 first_response->status.sct = first_sct; 88 89 /* first request should be completed */ 90 spdk_nvmf_request_complete(first_req); 91 req->first_fused_req = NULL; 92 req->first_fused = false; 93 } else { 94 spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &sct, &sc); 95 } 96 97 response->cdw0 = cdw0; 98 response->status.sc = sc; 99 response->status.sct = sct; 100 101 spdk_nvmf_request_complete(req); 102 spdk_bdev_free_io(bdev_io); 103 } 104 105 static void 106 nvmf_bdev_ctrlr_complete_admin_cmd(struct spdk_bdev_io *bdev_io, bool success, 107 void *cb_arg) 108 { 109 struct spdk_nvmf_request *req = cb_arg; 110 111 if (req->cmd_cb_fn) { 112 req->cmd_cb_fn(req); 113 } 114 115 nvmf_bdev_ctrlr_complete_cmd(bdev_io, success, req); 116 } 117 118 void 119 nvmf_bdev_ctrlr_identify_ns(struct spdk_nvmf_ns *ns, struct spdk_nvme_ns_data *nsdata, 120 bool dif_insert_or_strip) 121 { 122 struct spdk_bdev *bdev = ns->bdev; 123 uint64_t num_blocks; 124 uint32_t phys_blocklen; 125 uint32_t max_copy; 126 127 num_blocks = spdk_bdev_get_num_blocks(bdev); 128 129 nsdata->nsze = num_blocks; 130 nsdata->ncap = num_blocks; 131 nsdata->nuse = num_blocks; 132 nsdata->nlbaf = 0; 133 nsdata->flbas.format = 0; 134 nsdata->flbas.msb_format = 0; 135 nsdata->nacwu = spdk_bdev_get_acwu(bdev) - 1; /* nacwu is 0-based */ 136 if (!dif_insert_or_strip) { 137 nsdata->lbaf[0].ms = spdk_bdev_get_md_size(bdev); 138 nsdata->lbaf[0].lbads = spdk_u32log2(spdk_bdev_get_block_size(bdev)); 139 if (nsdata->lbaf[0].ms != 0) { 140 nsdata->flbas.extended = 1; 141 nsdata->mc.extended = 1; 142 nsdata->mc.pointer = 0; 143 nsdata->dps.md_start = spdk_bdev_is_dif_head_of_md(bdev); 144 /* NVMf library doesn't process PRACT and PRCHK flags, we 145 * leave the use of extended LBA buffer to users. 146 */ 147 nsdata->dps.pit = SPDK_NVME_FMT_NVM_PROTECTION_DISABLE; 148 } 149 } else { 150 nsdata->lbaf[0].ms = 0; 151 nsdata->lbaf[0].lbads = spdk_u32log2(spdk_bdev_get_data_block_size(bdev)); 152 } 153 154 phys_blocklen = spdk_bdev_get_physical_block_size(bdev); 155 assert(phys_blocklen > 0); 156 /* Linux driver uses min(nawupf, npwg) to set physical_block_size */ 157 nsdata->nsfeat.optperf = 1; 158 nsdata->nsfeat.ns_atomic_write_unit = 1; 159 nsdata->npwg = (phys_blocklen >> nsdata->lbaf[0].lbads) - 1; 160 nsdata->nawupf = nsdata->npwg; 161 nsdata->npwa = nsdata->npwg; 162 nsdata->npdg = nsdata->npwg; 163 nsdata->npda = nsdata->npwg; 164 165 if (spdk_bdev_get_write_unit_size(bdev) == 1) { 166 nsdata->noiob = spdk_bdev_get_optimal_io_boundary(bdev); 167 } 168 nsdata->nmic.can_share = 1; 169 if (nvmf_ns_is_ptpl_capable(ns)) { 170 nsdata->nsrescap.rescap.persist = 1; 171 } 172 nsdata->nsrescap.rescap.write_exclusive = 1; 173 nsdata->nsrescap.rescap.exclusive_access = 1; 174 nsdata->nsrescap.rescap.write_exclusive_reg_only = 1; 175 nsdata->nsrescap.rescap.exclusive_access_reg_only = 1; 176 nsdata->nsrescap.rescap.write_exclusive_all_reg = 1; 177 nsdata->nsrescap.rescap.exclusive_access_all_reg = 1; 178 nsdata->nsrescap.rescap.ignore_existing_key = 1; 179 180 SPDK_STATIC_ASSERT(sizeof(nsdata->nguid) == sizeof(ns->opts.nguid), "size mismatch"); 181 memcpy(nsdata->nguid, ns->opts.nguid, sizeof(nsdata->nguid)); 182 183 SPDK_STATIC_ASSERT(sizeof(nsdata->eui64) == sizeof(ns->opts.eui64), "size mismatch"); 184 memcpy(&nsdata->eui64, ns->opts.eui64, sizeof(nsdata->eui64)); 185 186 /* For now we support just one source range for copy command */ 187 nsdata->msrc = 0; 188 189 max_copy = spdk_bdev_get_max_copy(bdev); 190 if (max_copy == 0 || max_copy > UINT16_MAX) { 191 /* Zero means copy size is unlimited */ 192 nsdata->mcl = UINT16_MAX; 193 nsdata->mssrl = UINT16_MAX; 194 } else { 195 nsdata->mcl = max_copy; 196 nsdata->mssrl = max_copy; 197 } 198 } 199 200 static void 201 nvmf_bdev_ctrlr_get_rw_params(const struct spdk_nvme_cmd *cmd, uint64_t *start_lba, 202 uint64_t *num_blocks) 203 { 204 /* SLBA: CDW10 and CDW11 */ 205 *start_lba = from_le64(&cmd->cdw10); 206 207 /* NLB: CDW12 bits 15:00, 0's based */ 208 *num_blocks = (from_le32(&cmd->cdw12) & 0xFFFFu) + 1; 209 } 210 211 static bool 212 nvmf_bdev_ctrlr_lba_in_range(uint64_t bdev_num_blocks, uint64_t io_start_lba, 213 uint64_t io_num_blocks) 214 { 215 if (io_start_lba + io_num_blocks > bdev_num_blocks || 216 io_start_lba + io_num_blocks < io_start_lba) { 217 return false; 218 } 219 220 return true; 221 } 222 223 static void 224 nvmf_ctrlr_process_io_cmd_resubmit(void *arg) 225 { 226 struct spdk_nvmf_request *req = arg; 227 int rc; 228 229 rc = nvmf_ctrlr_process_io_cmd(req); 230 if (rc == SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE) { 231 spdk_nvmf_request_complete(req); 232 } 233 } 234 235 static void 236 nvmf_ctrlr_process_admin_cmd_resubmit(void *arg) 237 { 238 struct spdk_nvmf_request *req = arg; 239 int rc; 240 241 rc = nvmf_ctrlr_process_admin_cmd(req); 242 if (rc == SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE) { 243 spdk_nvmf_request_complete(req); 244 } 245 } 246 247 static void 248 nvmf_bdev_ctrl_queue_io(struct spdk_nvmf_request *req, struct spdk_bdev *bdev, 249 struct spdk_io_channel *ch, spdk_bdev_io_wait_cb cb_fn, void *cb_arg) 250 { 251 int rc; 252 253 req->bdev_io_wait.bdev = bdev; 254 req->bdev_io_wait.cb_fn = cb_fn; 255 req->bdev_io_wait.cb_arg = cb_arg; 256 257 rc = spdk_bdev_queue_io_wait(bdev, ch, &req->bdev_io_wait); 258 if (rc != 0) { 259 assert(false); 260 } 261 req->qpair->group->stat.pending_bdev_io++; 262 } 263 264 bool 265 nvmf_bdev_zcopy_enabled(struct spdk_bdev *bdev) 266 { 267 return spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_ZCOPY); 268 } 269 270 int 271 nvmf_bdev_ctrlr_read_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 272 struct spdk_io_channel *ch, struct spdk_nvmf_request *req) 273 { 274 struct spdk_bdev_ext_io_opts opts = { 275 .size = SPDK_SIZEOF(&opts, accel_sequence), 276 .memory_domain = req->memory_domain, 277 .memory_domain_ctx = req->memory_domain_ctx, 278 .accel_sequence = req->accel_sequence, 279 }; 280 uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev); 281 uint32_t block_size = spdk_bdev_get_block_size(bdev); 282 struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; 283 struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl; 284 uint64_t start_lba; 285 uint64_t num_blocks; 286 int rc; 287 288 nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks); 289 290 if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) { 291 SPDK_ERRLOG("end of media\n"); 292 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 293 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE; 294 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 295 } 296 297 if (spdk_unlikely(num_blocks * block_size > req->length)) { 298 SPDK_ERRLOG("Read NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n", 299 num_blocks, block_size, req->length); 300 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 301 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; 302 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 303 } 304 305 assert(!spdk_nvmf_request_using_zcopy(req)); 306 307 rc = spdk_bdev_readv_blocks_ext(desc, ch, req->iov, req->iovcnt, start_lba, num_blocks, 308 nvmf_bdev_ctrlr_complete_cmd, req, &opts); 309 if (spdk_unlikely(rc)) { 310 if (rc == -ENOMEM) { 311 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); 312 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 313 } 314 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 315 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; 316 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 317 } 318 319 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 320 } 321 322 int 323 nvmf_bdev_ctrlr_write_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 324 struct spdk_io_channel *ch, struct spdk_nvmf_request *req) 325 { 326 struct spdk_bdev_ext_io_opts opts = { 327 .size = SPDK_SIZEOF(&opts, accel_sequence), 328 .memory_domain = req->memory_domain, 329 .memory_domain_ctx = req->memory_domain_ctx, 330 .accel_sequence = req->accel_sequence, 331 }; 332 uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev); 333 uint32_t block_size = spdk_bdev_get_block_size(bdev); 334 struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; 335 struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl; 336 uint64_t start_lba; 337 uint64_t num_blocks; 338 int rc; 339 340 nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks); 341 342 if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) { 343 SPDK_ERRLOG("end of media\n"); 344 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 345 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE; 346 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 347 } 348 349 if (spdk_unlikely(num_blocks * block_size > req->length)) { 350 SPDK_ERRLOG("Write NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n", 351 num_blocks, block_size, req->length); 352 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 353 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; 354 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 355 } 356 357 assert(!spdk_nvmf_request_using_zcopy(req)); 358 359 rc = spdk_bdev_writev_blocks_ext(desc, ch, req->iov, req->iovcnt, start_lba, num_blocks, 360 nvmf_bdev_ctrlr_complete_cmd, req, &opts); 361 if (spdk_unlikely(rc)) { 362 if (rc == -ENOMEM) { 363 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); 364 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 365 } 366 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 367 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; 368 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 369 } 370 371 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 372 } 373 374 int 375 nvmf_bdev_ctrlr_compare_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 376 struct spdk_io_channel *ch, struct spdk_nvmf_request *req) 377 { 378 uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev); 379 uint32_t block_size = spdk_bdev_get_block_size(bdev); 380 struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; 381 struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl; 382 uint64_t start_lba; 383 uint64_t num_blocks; 384 int rc; 385 386 nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks); 387 388 if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) { 389 SPDK_ERRLOG("end of media\n"); 390 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 391 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE; 392 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 393 } 394 395 if (spdk_unlikely(num_blocks * block_size > req->length)) { 396 SPDK_ERRLOG("Compare NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n", 397 num_blocks, block_size, req->length); 398 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 399 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; 400 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 401 } 402 403 rc = spdk_bdev_comparev_blocks(desc, ch, req->iov, req->iovcnt, start_lba, num_blocks, 404 nvmf_bdev_ctrlr_complete_cmd, req); 405 if (spdk_unlikely(rc)) { 406 if (rc == -ENOMEM) { 407 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); 408 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 409 } 410 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 411 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; 412 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 413 } 414 415 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 416 } 417 418 int 419 nvmf_bdev_ctrlr_compare_and_write_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 420 struct spdk_io_channel *ch, struct spdk_nvmf_request *cmp_req, struct spdk_nvmf_request *write_req) 421 { 422 uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev); 423 uint32_t block_size = spdk_bdev_get_block_size(bdev); 424 struct spdk_nvme_cmd *cmp_cmd = &cmp_req->cmd->nvme_cmd; 425 struct spdk_nvme_cmd *write_cmd = &write_req->cmd->nvme_cmd; 426 struct spdk_nvme_cpl *rsp = &write_req->rsp->nvme_cpl; 427 uint64_t write_start_lba, cmp_start_lba; 428 uint64_t write_num_blocks, cmp_num_blocks; 429 int rc; 430 431 nvmf_bdev_ctrlr_get_rw_params(cmp_cmd, &cmp_start_lba, &cmp_num_blocks); 432 nvmf_bdev_ctrlr_get_rw_params(write_cmd, &write_start_lba, &write_num_blocks); 433 434 if (spdk_unlikely(write_start_lba != cmp_start_lba || write_num_blocks != cmp_num_blocks)) { 435 SPDK_ERRLOG("Fused command start lba / num blocks mismatch\n"); 436 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 437 rsp->status.sc = SPDK_NVME_SC_INVALID_FIELD; 438 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 439 } 440 441 if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, write_start_lba, 442 write_num_blocks))) { 443 SPDK_ERRLOG("end of media\n"); 444 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 445 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE; 446 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 447 } 448 449 if (spdk_unlikely(write_num_blocks * block_size > write_req->length)) { 450 SPDK_ERRLOG("Write NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n", 451 write_num_blocks, block_size, write_req->length); 452 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 453 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; 454 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 455 } 456 457 rc = spdk_bdev_comparev_and_writev_blocks(desc, ch, cmp_req->iov, cmp_req->iovcnt, write_req->iov, 458 write_req->iovcnt, write_start_lba, write_num_blocks, nvmf_bdev_ctrlr_complete_cmd, write_req); 459 if (spdk_unlikely(rc)) { 460 if (rc == -ENOMEM) { 461 nvmf_bdev_ctrl_queue_io(cmp_req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, cmp_req); 462 nvmf_bdev_ctrl_queue_io(write_req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, write_req); 463 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 464 } 465 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 466 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; 467 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 468 } 469 470 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 471 } 472 473 int 474 nvmf_bdev_ctrlr_write_zeroes_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 475 struct spdk_io_channel *ch, struct spdk_nvmf_request *req) 476 { 477 uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev); 478 struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; 479 struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl; 480 uint64_t max_write_zeroes_size = req->qpair->ctrlr->subsys->max_write_zeroes_size_kib; 481 uint64_t start_lba; 482 uint64_t num_blocks; 483 int rc; 484 485 nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks); 486 if (spdk_unlikely(max_write_zeroes_size > 0 && 487 num_blocks > (max_write_zeroes_size << 10) / spdk_bdev_get_block_size(bdev))) { 488 SPDK_ERRLOG("invalid write zeroes size, should not exceed %" PRIu64 "Kib\n", max_write_zeroes_size); 489 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 490 rsp->status.sc = SPDK_NVME_SC_INVALID_FIELD; 491 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 492 } 493 494 if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) { 495 SPDK_ERRLOG("end of media\n"); 496 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 497 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE; 498 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 499 } 500 501 if (spdk_unlikely(cmd->cdw12_bits.write_zeroes.deac)) { 502 SPDK_ERRLOG("Write Zeroes Deallocate is not supported\n"); 503 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 504 rsp->status.sc = SPDK_NVME_SC_INVALID_FIELD; 505 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 506 } 507 508 rc = spdk_bdev_write_zeroes_blocks(desc, ch, start_lba, num_blocks, 509 nvmf_bdev_ctrlr_complete_cmd, req); 510 if (spdk_unlikely(rc)) { 511 if (rc == -ENOMEM) { 512 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); 513 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 514 } 515 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 516 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; 517 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 518 } 519 520 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 521 } 522 523 int 524 nvmf_bdev_ctrlr_flush_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 525 struct spdk_io_channel *ch, struct spdk_nvmf_request *req) 526 { 527 struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; 528 int rc; 529 530 /* As for NVMeoF controller, SPDK always set volatile write 531 * cache bit to 1, return success for those block devices 532 * which can't support FLUSH command. 533 */ 534 if (!spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_FLUSH)) { 535 response->status.sct = SPDK_NVME_SCT_GENERIC; 536 response->status.sc = SPDK_NVME_SC_SUCCESS; 537 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 538 } 539 540 rc = spdk_bdev_flush_blocks(desc, ch, 0, spdk_bdev_get_num_blocks(bdev), 541 nvmf_bdev_ctrlr_complete_cmd, req); 542 if (spdk_unlikely(rc)) { 543 if (rc == -ENOMEM) { 544 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); 545 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 546 } 547 response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; 548 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 549 } 550 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 551 } 552 553 struct nvmf_bdev_ctrlr_unmap { 554 struct spdk_nvmf_request *req; 555 uint32_t count; 556 struct spdk_bdev_desc *desc; 557 struct spdk_bdev *bdev; 558 struct spdk_io_channel *ch; 559 uint32_t range_index; 560 }; 561 562 static void 563 nvmf_bdev_ctrlr_unmap_cpl(struct spdk_bdev_io *bdev_io, bool success, 564 void *cb_arg) 565 { 566 struct nvmf_bdev_ctrlr_unmap *unmap_ctx = cb_arg; 567 struct spdk_nvmf_request *req = unmap_ctx->req; 568 struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; 569 int sc, sct; 570 uint32_t cdw0; 571 572 unmap_ctx->count--; 573 574 if (response->status.sct == SPDK_NVME_SCT_GENERIC && 575 response->status.sc == SPDK_NVME_SC_SUCCESS) { 576 spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &sct, &sc); 577 response->cdw0 = cdw0; 578 response->status.sc = sc; 579 response->status.sct = sct; 580 } 581 582 if (unmap_ctx->count == 0) { 583 spdk_nvmf_request_complete(req); 584 free(unmap_ctx); 585 } 586 spdk_bdev_free_io(bdev_io); 587 } 588 589 static int nvmf_bdev_ctrlr_unmap(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 590 struct spdk_io_channel *ch, struct spdk_nvmf_request *req, 591 struct nvmf_bdev_ctrlr_unmap *unmap_ctx); 592 static void 593 nvmf_bdev_ctrlr_unmap_resubmit(void *arg) 594 { 595 struct nvmf_bdev_ctrlr_unmap *unmap_ctx = arg; 596 struct spdk_nvmf_request *req = unmap_ctx->req; 597 struct spdk_bdev_desc *desc = unmap_ctx->desc; 598 struct spdk_bdev *bdev = unmap_ctx->bdev; 599 struct spdk_io_channel *ch = unmap_ctx->ch; 600 601 nvmf_bdev_ctrlr_unmap(bdev, desc, ch, req, unmap_ctx); 602 } 603 604 static int 605 nvmf_bdev_ctrlr_unmap(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 606 struct spdk_io_channel *ch, struct spdk_nvmf_request *req, 607 struct nvmf_bdev_ctrlr_unmap *unmap_ctx) 608 { 609 uint16_t nr, i; 610 struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; 611 struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; 612 uint64_t max_discard_size = req->qpair->ctrlr->subsys->max_discard_size_kib; 613 uint32_t block_size = spdk_bdev_get_block_size(bdev); 614 struct spdk_iov_xfer ix; 615 uint64_t lba; 616 uint32_t lba_count; 617 int rc; 618 619 nr = cmd->cdw10_bits.dsm.nr + 1; 620 if (nr * sizeof(struct spdk_nvme_dsm_range) > req->length) { 621 SPDK_ERRLOG("Dataset Management number of ranges > SGL length\n"); 622 response->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; 623 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 624 } 625 626 if (unmap_ctx == NULL) { 627 unmap_ctx = calloc(1, sizeof(*unmap_ctx)); 628 if (!unmap_ctx) { 629 response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; 630 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 631 } 632 633 unmap_ctx->req = req; 634 unmap_ctx->desc = desc; 635 unmap_ctx->ch = ch; 636 unmap_ctx->bdev = bdev; 637 638 response->status.sct = SPDK_NVME_SCT_GENERIC; 639 response->status.sc = SPDK_NVME_SC_SUCCESS; 640 } else { 641 unmap_ctx->count--; /* dequeued */ 642 } 643 644 spdk_iov_xfer_init(&ix, req->iov, req->iovcnt); 645 646 for (i = unmap_ctx->range_index; i < nr; i++) { 647 struct spdk_nvme_dsm_range dsm_range = { 0 }; 648 649 spdk_iov_xfer_to_buf(&ix, &dsm_range, sizeof(dsm_range)); 650 651 lba = dsm_range.starting_lba; 652 lba_count = dsm_range.length; 653 if (max_discard_size > 0 && lba_count > (max_discard_size << 10) / block_size) { 654 SPDK_ERRLOG("invalid unmap size, should not exceed %" PRIu64 "Kib\n", max_discard_size); 655 response->status.sct = SPDK_NVME_SCT_GENERIC; 656 response->status.sc = SPDK_NVME_SC_INVALID_FIELD; 657 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 658 } 659 660 unmap_ctx->count++; 661 662 rc = spdk_bdev_unmap_blocks(desc, ch, lba, lba_count, 663 nvmf_bdev_ctrlr_unmap_cpl, unmap_ctx); 664 if (rc) { 665 if (rc == -ENOMEM) { 666 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_bdev_ctrlr_unmap_resubmit, unmap_ctx); 667 /* Unmap was not yet submitted to bdev */ 668 /* unmap_ctx->count will be decremented when the request is dequeued */ 669 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 670 } 671 response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; 672 unmap_ctx->count--; 673 /* We can't return here - we may have to wait for any other 674 * unmaps already sent to complete */ 675 break; 676 } 677 unmap_ctx->range_index++; 678 } 679 680 if (unmap_ctx->count == 0) { 681 free(unmap_ctx); 682 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 683 } 684 685 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 686 } 687 688 int 689 nvmf_bdev_ctrlr_dsm_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 690 struct spdk_io_channel *ch, struct spdk_nvmf_request *req) 691 { 692 struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; 693 struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; 694 695 if (cmd->cdw11_bits.dsm.ad) { 696 return nvmf_bdev_ctrlr_unmap(bdev, desc, ch, req, NULL); 697 } 698 699 response->status.sct = SPDK_NVME_SCT_GENERIC; 700 response->status.sc = SPDK_NVME_SC_SUCCESS; 701 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 702 } 703 704 int 705 nvmf_bdev_ctrlr_copy_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 706 struct spdk_io_channel *ch, struct spdk_nvmf_request *req) 707 { 708 struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; 709 struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; 710 uint64_t sdlba = ((uint64_t)cmd->cdw11 << 32) + cmd->cdw10; 711 struct spdk_nvme_scc_source_range range = { 0 }; 712 struct spdk_iov_xfer ix; 713 int rc; 714 715 SPDK_DEBUGLOG(nvmf, "Copy command: SDLBA %lu, NR %u, desc format %u, PRINFOR %u, " 716 "DTYPE %u, STCW %u, PRINFOW %u, FUA %u, LR %u\n", 717 sdlba, 718 cmd->cdw12_bits.copy.nr, 719 cmd->cdw12_bits.copy.df, 720 cmd->cdw12_bits.copy.prinfor, 721 cmd->cdw12_bits.copy.dtype, 722 cmd->cdw12_bits.copy.stcw, 723 cmd->cdw12_bits.copy.prinfow, 724 cmd->cdw12_bits.copy.fua, 725 cmd->cdw12_bits.copy.lr); 726 727 if (spdk_unlikely(req->length != (cmd->cdw12_bits.copy.nr + 1) * 728 sizeof(struct spdk_nvme_scc_source_range))) { 729 response->status.sct = SPDK_NVME_SCT_GENERIC; 730 response->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; 731 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 732 } 733 734 /* 735 * We support only one source range, and rely on this with the xfer 736 * below. 737 */ 738 if (cmd->cdw12_bits.copy.nr > 0) { 739 response->status.sct = SPDK_NVME_SCT_COMMAND_SPECIFIC; 740 response->status.sc = SPDK_NVME_SC_CMD_SIZE_LIMIT_SIZE_EXCEEDED; 741 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 742 } 743 744 if (cmd->cdw12_bits.copy.df != 0) { 745 response->status.sct = SPDK_NVME_SCT_GENERIC; 746 response->status.sc = SPDK_NVME_SC_INVALID_FIELD; 747 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 748 } 749 750 spdk_iov_xfer_init(&ix, req->iov, req->iovcnt); 751 spdk_iov_xfer_to_buf(&ix, &range, sizeof(range)); 752 753 rc = spdk_bdev_copy_blocks(desc, ch, sdlba, range.slba, range.nlb + 1, 754 nvmf_bdev_ctrlr_complete_cmd, req); 755 if (spdk_unlikely(rc)) { 756 if (rc == -ENOMEM) { 757 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); 758 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 759 } 760 761 response->status.sct = SPDK_NVME_SCT_GENERIC; 762 response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; 763 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 764 } 765 766 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 767 } 768 769 int 770 nvmf_bdev_ctrlr_nvme_passthru_io(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 771 struct spdk_io_channel *ch, struct spdk_nvmf_request *req) 772 { 773 int rc; 774 775 rc = spdk_bdev_nvme_iov_passthru_md(desc, ch, &req->cmd->nvme_cmd, req->iov, req->iovcnt, 776 req->length, NULL, 0, nvmf_bdev_ctrlr_complete_cmd, req); 777 778 if (spdk_unlikely(rc)) { 779 if (rc == -ENOMEM) { 780 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); 781 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 782 } 783 req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC; 784 req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INVALID_OPCODE; 785 req->rsp->nvme_cpl.status.dnr = 1; 786 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 787 } 788 789 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 790 } 791 792 int 793 spdk_nvmf_bdev_ctrlr_nvme_passthru_admin(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 794 struct spdk_io_channel *ch, struct spdk_nvmf_request *req, 795 spdk_nvmf_nvme_passthru_cmd_cb cb_fn) 796 { 797 int rc; 798 799 if (spdk_unlikely(req->iovcnt > 1)) { 800 req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC; 801 req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; 802 req->rsp->nvme_cpl.status.dnr = 1; 803 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 804 } 805 806 req->cmd_cb_fn = cb_fn; 807 808 rc = spdk_bdev_nvme_admin_passthru(desc, ch, &req->cmd->nvme_cmd, req->iov[0].iov_base, req->length, 809 nvmf_bdev_ctrlr_complete_admin_cmd, req); 810 if (spdk_unlikely(rc)) { 811 if (rc == -ENOMEM) { 812 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_admin_cmd_resubmit, req); 813 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 814 } 815 req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC; 816 if (rc == -ENOTSUP) { 817 req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INVALID_OPCODE; 818 } else { 819 req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; 820 } 821 822 req->rsp->nvme_cpl.status.dnr = 1; 823 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 824 } 825 826 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 827 } 828 829 static void 830 nvmf_bdev_ctrlr_complete_abort_cmd(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg) 831 { 832 struct spdk_nvmf_request *req = cb_arg; 833 834 if (success) { 835 req->rsp->nvme_cpl.cdw0 &= ~1U; 836 } 837 838 spdk_nvmf_request_complete(req); 839 spdk_bdev_free_io(bdev_io); 840 } 841 842 int 843 spdk_nvmf_bdev_ctrlr_abort_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, 844 struct spdk_io_channel *ch, struct spdk_nvmf_request *req, 845 struct spdk_nvmf_request *req_to_abort) 846 { 847 int rc; 848 849 assert((req->rsp->nvme_cpl.cdw0 & 1U) != 0); 850 851 rc = spdk_bdev_abort(desc, ch, req_to_abort, nvmf_bdev_ctrlr_complete_abort_cmd, req); 852 if (spdk_likely(rc == 0)) { 853 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 854 } else if (rc == -ENOMEM) { 855 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_admin_cmd_resubmit, req); 856 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 857 } else { 858 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 859 } 860 } 861 862 bool 863 nvmf_bdev_ctrlr_get_dif_ctx(struct spdk_bdev *bdev, struct spdk_nvme_cmd *cmd, 864 struct spdk_dif_ctx *dif_ctx) 865 { 866 uint32_t init_ref_tag, dif_check_flags = 0; 867 int rc; 868 struct spdk_dif_ctx_init_ext_opts dif_opts; 869 870 if (spdk_bdev_get_md_size(bdev) == 0) { 871 return false; 872 } 873 874 /* Initial Reference Tag is the lower 32 bits of the start LBA. */ 875 init_ref_tag = (uint32_t)from_le64(&cmd->cdw10); 876 877 if (spdk_bdev_is_dif_check_enabled(bdev, SPDK_DIF_CHECK_TYPE_REFTAG)) { 878 dif_check_flags |= SPDK_DIF_FLAGS_REFTAG_CHECK; 879 } 880 881 if (spdk_bdev_is_dif_check_enabled(bdev, SPDK_DIF_CHECK_TYPE_GUARD)) { 882 dif_check_flags |= SPDK_DIF_FLAGS_GUARD_CHECK; 883 } 884 885 dif_opts.size = SPDK_SIZEOF(&dif_opts, dif_pi_format); 886 dif_opts.dif_pi_format = SPDK_DIF_PI_FORMAT_16; 887 rc = spdk_dif_ctx_init(dif_ctx, 888 spdk_bdev_get_block_size(bdev), 889 spdk_bdev_get_md_size(bdev), 890 spdk_bdev_is_md_interleaved(bdev), 891 spdk_bdev_is_dif_head_of_md(bdev), 892 spdk_bdev_get_dif_type(bdev), 893 dif_check_flags, 894 init_ref_tag, 0, 0, 0, 0, &dif_opts); 895 896 return (rc == 0) ? true : false; 897 } 898 899 static void 900 nvmf_bdev_ctrlr_zcopy_start_complete(struct spdk_bdev_io *bdev_io, bool success, 901 void *cb_arg) 902 { 903 struct spdk_nvmf_request *req = cb_arg; 904 struct iovec *iov; 905 int iovcnt = 0; 906 907 if (spdk_unlikely(!success)) { 908 int sc = 0, sct = 0; 909 uint32_t cdw0 = 0; 910 struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; 911 spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &sct, &sc); 912 913 response->cdw0 = cdw0; 914 response->status.sc = sc; 915 response->status.sct = sct; 916 917 spdk_bdev_free_io(bdev_io); 918 spdk_nvmf_request_complete(req); 919 return; 920 } 921 922 spdk_bdev_io_get_iovec(bdev_io, &iov, &iovcnt); 923 924 assert(iovcnt <= NVMF_REQ_MAX_BUFFERS); 925 assert(iovcnt > 0); 926 927 req->iovcnt = iovcnt; 928 929 assert(req->iov == iov); 930 931 req->zcopy_bdev_io = bdev_io; /* Preserve the bdev_io for the end zcopy */ 932 933 spdk_nvmf_request_complete(req); 934 /* Don't free the bdev_io here as it is needed for the END ZCOPY */ 935 } 936 937 int 938 nvmf_bdev_ctrlr_zcopy_start(struct spdk_bdev *bdev, 939 struct spdk_bdev_desc *desc, 940 struct spdk_io_channel *ch, 941 struct spdk_nvmf_request *req) 942 { 943 struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl; 944 uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev); 945 uint32_t block_size = spdk_bdev_get_block_size(bdev); 946 uint64_t start_lba; 947 uint64_t num_blocks; 948 int rc; 949 950 nvmf_bdev_ctrlr_get_rw_params(&req->cmd->nvme_cmd, &start_lba, &num_blocks); 951 952 if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) { 953 SPDK_ERRLOG("end of media\n"); 954 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 955 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE; 956 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 957 } 958 959 if (spdk_unlikely(num_blocks * block_size > req->length)) { 960 SPDK_ERRLOG("Read NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n", 961 num_blocks, block_size, req->length); 962 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 963 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; 964 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 965 } 966 967 bool populate = (req->cmd->nvme_cmd.opc == SPDK_NVME_OPC_READ) ? true : false; 968 969 rc = spdk_bdev_zcopy_start(desc, ch, req->iov, req->iovcnt, start_lba, 970 num_blocks, populate, nvmf_bdev_ctrlr_zcopy_start_complete, req); 971 if (spdk_unlikely(rc != 0)) { 972 if (rc == -ENOMEM) { 973 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); 974 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 975 } 976 rsp->status.sct = SPDK_NVME_SCT_GENERIC; 977 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; 978 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; 979 } 980 981 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; 982 } 983 984 static void 985 nvmf_bdev_ctrlr_zcopy_end_complete(struct spdk_bdev_io *bdev_io, bool success, 986 void *cb_arg) 987 { 988 struct spdk_nvmf_request *req = cb_arg; 989 990 if (spdk_unlikely(!success)) { 991 int sc = 0, sct = 0; 992 uint32_t cdw0 = 0; 993 struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; 994 spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &sct, &sc); 995 996 response->cdw0 = cdw0; 997 response->status.sc = sc; 998 response->status.sct = sct; 999 } 1000 1001 spdk_bdev_free_io(bdev_io); 1002 req->zcopy_bdev_io = NULL; 1003 spdk_nvmf_request_complete(req); 1004 } 1005 1006 void 1007 nvmf_bdev_ctrlr_zcopy_end(struct spdk_nvmf_request *req, bool commit) 1008 { 1009 int rc __attribute__((unused)); 1010 1011 rc = spdk_bdev_zcopy_end(req->zcopy_bdev_io, commit, nvmf_bdev_ctrlr_zcopy_end_complete, req); 1012 1013 /* The only way spdk_bdev_zcopy_end() can fail is if we pass a bdev_io type that isn't ZCOPY */ 1014 assert(rc == 0); 1015 } 1016