LCOV - code coverage report
Current view: top level - lib/nvmf - ctrlr_bdev.c (source / functions) Hit Total Coverage
Test: ut_cov_unit.info Lines: 327 620 52.7 %
Date: 2024-11-20 16:35:46 Functions: 18 35 51.4 %

          Line data    Source code
       1             : /*   SPDX-License-Identifier: BSD-3-Clause
       2             :  *   Copyright (C) 2017 Intel Corporation. All rights reserved.
       3             :  *   Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved.
       4             :  *   Copyright (c) 2021 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           0 : 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           0 :         for (ns = spdk_nvmf_subsystem_get_first_ns(subsystem); ns != NULL;
      32           0 :              ns = spdk_nvmf_subsystem_get_next_ns(subsystem, ns)) {
      33           0 :                 if (ns->bdev == NULL) {
      34           0 :                         continue;
      35             :                 }
      36             : 
      37           0 :                 if (!spdk_bdev_io_type_supported(ns->bdev, io_type)) {
      38           0 :                         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           0 :                         return false;
      43             :                 }
      44           0 :         }
      45             : 
      46           0 :         SPDK_DEBUGLOG(nvmf, "All devices in Subsystem %s support io_type %d\n",
      47             :                       spdk_nvmf_subsystem_get_nqn(subsystem), (int)io_type);
      48           0 :         return true;
      49           0 : }
      50             : 
      51             : bool
      52           0 : nvmf_ctrlr_dsm_supported(struct spdk_nvmf_ctrlr *ctrlr)
      53             : {
      54           0 :         return nvmf_subsystem_bdev_io_type_supported(ctrlr->subsys, SPDK_BDEV_IO_TYPE_UNMAP);
      55             : }
      56             : 
      57             : bool
      58           0 : nvmf_ctrlr_write_zeroes_supported(struct spdk_nvmf_ctrlr *ctrlr)
      59             : {
      60           0 :         return nvmf_subsystem_bdev_io_type_supported(ctrlr->subsys, SPDK_BDEV_IO_TYPE_WRITE_ZEROES);
      61             : }
      62             : 
      63             : bool
      64           0 : nvmf_ctrlr_copy_supported(struct spdk_nvmf_ctrlr *ctrlr)
      65             : {
      66           0 :         return nvmf_subsystem_bdev_io_type_supported(ctrlr->subsys, SPDK_BDEV_IO_TYPE_COPY);
      67             : }
      68             : 
      69             : static void
      70           4 : nvmf_bdev_ctrlr_complete_cmd(struct spdk_bdev_io *bdev_io, bool success,
      71             :                              void *cb_arg)
      72             : {
      73           4 :         struct spdk_nvmf_request        *req = cb_arg;
      74           4 :         struct spdk_nvme_cpl            *response = &req->rsp->nvme_cpl;
      75           4 :         int                             sc = 0, sct = 0;
      76           4 :         uint32_t                        cdw0 = 0;
      77             : 
      78           4 :         if (spdk_unlikely(req->first_fused)) {
      79           0 :                 struct spdk_nvmf_request        *first_req = req->first_fused_req;
      80           0 :                 struct spdk_nvme_cpl            *first_response = &first_req->rsp->nvme_cpl;
      81           0 :                 int                             first_sc = 0, first_sct = 0;
      82             : 
      83             :                 /* get status for both operations */
      84           0 :                 spdk_bdev_io_get_nvme_fused_status(bdev_io, &cdw0, &first_sct, &first_sc, &sct, &sc);
      85           0 :                 first_response->cdw0 = cdw0;
      86           0 :                 first_response->status.sc = first_sc;
      87           0 :                 first_response->status.sct = first_sct;
      88             : 
      89             :                 /* first request should be completed */
      90           0 :                 spdk_nvmf_request_complete(first_req);
      91           0 :                 req->first_fused_req = NULL;
      92           0 :                 req->first_fused = false;
      93           0 :         } else {
      94           4 :                 spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &sct, &sc);
      95             :         }
      96             : 
      97           4 :         response->cdw0 = cdw0;
      98           4 :         response->status.sc = sc;
      99           4 :         response->status.sct = sct;
     100             : 
     101           4 :         spdk_nvmf_request_complete(req);
     102           4 :         spdk_bdev_free_io(bdev_io);
     103           4 : }
     104             : 
     105             : static void
     106           2 : nvmf_bdev_ctrlr_complete_admin_cmd(struct spdk_bdev_io *bdev_io, bool success,
     107             :                                    void *cb_arg)
     108             : {
     109           2 :         struct spdk_nvmf_request *req = cb_arg;
     110             : 
     111           2 :         if (req->cmd_cb_fn) {
     112           0 :                 req->cmd_cb_fn(req);
     113           0 :         }
     114             : 
     115           2 :         nvmf_bdev_ctrlr_complete_cmd(bdev_io, success, req);
     116           2 : }
     117             : 
     118             : void
     119           2 : nvmf_bdev_ctrlr_identify_ns(struct spdk_nvmf_ns *ns, struct spdk_nvme_ns_data *nsdata,
     120             :                             bool dif_insert_or_strip)
     121             : {
     122           2 :         struct spdk_bdev *bdev = ns->bdev;
     123           2 :         struct spdk_bdev_desc *desc = ns->desc;
     124             :         uint64_t num_blocks;
     125             :         uint32_t phys_blocklen;
     126             :         uint32_t max_copy;
     127             : 
     128           2 :         num_blocks = spdk_bdev_get_num_blocks(bdev);
     129             : 
     130           2 :         nsdata->nsze = num_blocks;
     131           2 :         nsdata->ncap = num_blocks;
     132           2 :         nsdata->nuse = num_blocks;
     133           2 :         nsdata->nlbaf = 0;
     134           2 :         nsdata->flbas.format = 0;
     135           2 :         nsdata->flbas.msb_format = 0;
     136           2 :         nsdata->nacwu = spdk_bdev_get_acwu(bdev) - 1; /* nacwu is 0-based */
     137           2 :         if (!dif_insert_or_strip) {
     138           1 :                 nsdata->lbaf[0].ms = spdk_bdev_desc_get_md_size(desc);
     139           1 :                 nsdata->lbaf[0].lbads = spdk_u32log2(spdk_bdev_desc_get_block_size(desc));
     140           1 :                 if (nsdata->lbaf[0].ms != 0) {
     141           1 :                         nsdata->flbas.extended = 1;
     142           1 :                         nsdata->mc.extended = 1;
     143           1 :                         nsdata->mc.pointer = 0;
     144           1 :                         nsdata->dps.md_start = spdk_bdev_desc_is_dif_head_of_md(desc);
     145             : 
     146           1 :                         switch (spdk_bdev_get_dif_type(bdev)) {
     147             :                         case SPDK_DIF_TYPE1:
     148           1 :                                 nsdata->dpc.pit1 = 1;
     149           1 :                                 nsdata->dps.pit = SPDK_NVME_FMT_NVM_PROTECTION_TYPE1;
     150           1 :                                 break;
     151             :                         case SPDK_DIF_TYPE2:
     152           0 :                                 nsdata->dpc.pit2 = 1;
     153           0 :                                 nsdata->dps.pit = SPDK_NVME_FMT_NVM_PROTECTION_TYPE2;
     154           0 :                                 break;
     155             :                         case SPDK_DIF_TYPE3:
     156           0 :                                 nsdata->dpc.pit3 = 1;
     157           0 :                                 nsdata->dps.pit = SPDK_NVME_FMT_NVM_PROTECTION_TYPE3;
     158           0 :                                 break;
     159             :                         default:
     160           0 :                                 SPDK_DEBUGLOG(nvmf, "Protection Disabled\n");
     161           0 :                                 nsdata->dps.pit = SPDK_NVME_FMT_NVM_PROTECTION_DISABLE;
     162           0 :                                 break;
     163             :                         }
     164           1 :                 }
     165           1 :         } else {
     166           1 :                 nsdata->lbaf[0].ms = 0;
     167           1 :                 nsdata->lbaf[0].lbads = spdk_u32log2(spdk_bdev_get_data_block_size(bdev));
     168             :         }
     169             : 
     170           2 :         phys_blocklen = spdk_bdev_get_physical_block_size(bdev);
     171           2 :         assert(phys_blocklen > 0);
     172             :         /* Linux driver uses min(nawupf, npwg) to set physical_block_size */
     173           2 :         nsdata->nsfeat.optperf = 1;
     174           2 :         nsdata->nsfeat.ns_atomic_write_unit = 1;
     175           2 :         nsdata->npwg = (phys_blocklen >> nsdata->lbaf[0].lbads) - 1;
     176           2 :         nsdata->nawupf = nsdata->npwg;
     177           2 :         nsdata->npwa = nsdata->npwg;
     178           2 :         nsdata->npdg = nsdata->npwg;
     179           2 :         nsdata->npda = nsdata->npwg;
     180             : 
     181           2 :         if (spdk_bdev_get_write_unit_size(bdev) == 1) {
     182           2 :                 nsdata->noiob = spdk_bdev_get_optimal_io_boundary(bdev);
     183           2 :         }
     184           2 :         nsdata->nmic.can_share = 1;
     185           2 :         if (nvmf_ns_is_ptpl_capable(ns)) {
     186           2 :                 nsdata->nsrescap.rescap.persist = 1;
     187           2 :         }
     188           2 :         nsdata->nsrescap.rescap.write_exclusive = 1;
     189           2 :         nsdata->nsrescap.rescap.exclusive_access = 1;
     190           2 :         nsdata->nsrescap.rescap.write_exclusive_reg_only = 1;
     191           2 :         nsdata->nsrescap.rescap.exclusive_access_reg_only = 1;
     192           2 :         nsdata->nsrescap.rescap.write_exclusive_all_reg = 1;
     193           2 :         nsdata->nsrescap.rescap.exclusive_access_all_reg = 1;
     194           2 :         nsdata->nsrescap.rescap.ignore_existing_key = 1;
     195             : 
     196             :         SPDK_STATIC_ASSERT(sizeof(nsdata->nguid) == sizeof(ns->opts.nguid), "size mismatch");
     197           2 :         memcpy(nsdata->nguid, ns->opts.nguid, sizeof(nsdata->nguid));
     198             : 
     199             :         SPDK_STATIC_ASSERT(sizeof(nsdata->eui64) == sizeof(ns->opts.eui64), "size mismatch");
     200           2 :         memcpy(&nsdata->eui64, ns->opts.eui64, sizeof(nsdata->eui64));
     201             : 
     202             :         /* For now we support just one source range for copy command */
     203           2 :         nsdata->msrc = 0;
     204             : 
     205           2 :         max_copy = spdk_bdev_get_max_copy(bdev);
     206           2 :         if (max_copy == 0 || max_copy > UINT16_MAX) {
     207             :                 /* Zero means copy size is unlimited */
     208           2 :                 nsdata->mcl = UINT16_MAX;
     209           2 :                 nsdata->mssrl = UINT16_MAX;
     210           2 :         } else {
     211           0 :                 nsdata->mcl = max_copy;
     212           0 :                 nsdata->mssrl = max_copy;
     213             :         }
     214           2 : }
     215             : 
     216             : void
     217           0 : nvmf_bdev_ctrlr_identify_iocs_nvm(struct spdk_nvmf_ns *ns,
     218             :                                   struct spdk_nvme_nvm_ns_data *nsdata_nvm)
     219             : {
     220           0 :         struct spdk_bdev_desc *desc = ns->desc;
     221             :         uint8_t _16bpists;
     222             :         uint32_t sts, pif;
     223             : 
     224           0 :         if (spdk_bdev_desc_get_dif_type(desc) == SPDK_DIF_DISABLE) {
     225           0 :                 return;
     226             :         }
     227             : 
     228           0 :         pif = spdk_bdev_desc_get_dif_pi_format(desc);
     229             : 
     230             :         /*
     231             :          * 16BPISTS shall be 1 for 32/64b Guard PI.
     232             :          * STCRS shall be 1 if 16BPISTS is 1.
     233             :          * 16 is the minimum value of STS for 32b Guard PI.
     234             :          */
     235           0 :         switch (pif) {
     236             :         case SPDK_DIF_PI_FORMAT_16:
     237           0 :                 _16bpists = 0;
     238           0 :                 sts = 0;
     239           0 :                 break;
     240             :         case SPDK_DIF_PI_FORMAT_32:
     241           0 :                 _16bpists = 1;
     242           0 :                 sts = 16;
     243           0 :                 break;
     244             :         case SPDK_DIF_PI_FORMAT_64:
     245           0 :                 _16bpists = 1;
     246           0 :                 sts = 0;
     247           0 :                 break;
     248             :         default:
     249           0 :                 SPDK_WARNLOG("PI format %u is not supported\n", pif);
     250           0 :                 return;
     251             :         }
     252             : 
     253             :         /* For 16b Guard PI, Storage Tag is not available because we set STS to 0.
     254             :          * In this case, we do not have to set 16BPISTM to 1. For simplicity,
     255             :          * set 16BPISTM to 0 and set LBSTM to all zeroes.
     256             :          *
     257             :          * We will revisit here when we find any OS uses Storage Tag.
     258             :          */
     259           0 :         nsdata_nvm->lbstm = 0;
     260           0 :         nsdata_nvm->pic._16bpistm = 0;
     261             : 
     262           0 :         nsdata_nvm->pic._16bpists = _16bpists;
     263           0 :         nsdata_nvm->pic.stcrs = 0;
     264           0 :         nsdata_nvm->elbaf[0].sts = sts;
     265           0 :         nsdata_nvm->elbaf[0].pif = pif;
     266           0 : }
     267             : 
     268             : static void
     269          22 : nvmf_bdev_ctrlr_get_rw_params(const struct spdk_nvme_cmd *cmd, uint64_t *start_lba,
     270             :                               uint64_t *num_blocks)
     271             : {
     272             :         /* SLBA: CDW10 and CDW11 */
     273          22 :         *start_lba = from_le64(&cmd->cdw10);
     274             : 
     275             :         /* NLB: CDW12 bits 15:00, 0's based */
     276          22 :         *num_blocks = (from_le32(&cmd->cdw12) & 0xFFFFu) + 1;
     277          22 : }
     278             : 
     279             : static void
     280           3 : nvmf_bdev_ctrlr_get_rw_ext_params(const struct spdk_nvme_cmd *cmd,
     281             :                                   struct spdk_bdev_ext_io_opts *opts)
     282             : {
     283             :         /* Get CDW12 values */
     284           3 :         opts->nvme_cdw12.raw = from_le32(&cmd->cdw12);
     285             : 
     286             :         /* Get CDW13 values */
     287           3 :         opts->nvme_cdw13.raw = from_le32(&cmd->cdw13);
     288             : 
     289           3 :         opts->dif_check_flags_exclude_mask = (~opts->nvme_cdw12.raw) & SPDK_NVME_IO_FLAGS_PRCHK_MASK;
     290           3 : }
     291             : 
     292             : static bool
     293          27 : nvmf_bdev_ctrlr_lba_in_range(uint64_t bdev_num_blocks, uint64_t io_start_lba,
     294             :                              uint64_t io_num_blocks)
     295             : {
     296          27 :         if (io_start_lba + io_num_blocks > bdev_num_blocks ||
     297          19 :             io_start_lba + io_num_blocks < io_start_lba) {
     298          10 :                 return false;
     299             :         }
     300             : 
     301          17 :         return true;
     302          27 : }
     303             : 
     304             : static void
     305           0 : nvmf_ctrlr_process_io_cmd_resubmit(void *arg)
     306             : {
     307           0 :         struct spdk_nvmf_request *req = arg;
     308             :         int rc;
     309             : 
     310           0 :         rc = nvmf_ctrlr_process_io_cmd(req);
     311           0 :         if (rc == SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE) {
     312           0 :                 spdk_nvmf_request_complete(req);
     313           0 :         }
     314           0 : }
     315             : 
     316             : static void
     317           0 : nvmf_ctrlr_process_admin_cmd_resubmit(void *arg)
     318             : {
     319           0 :         struct spdk_nvmf_request *req = arg;
     320             :         int rc;
     321             : 
     322           0 :         rc = nvmf_ctrlr_process_admin_cmd(req);
     323           0 :         if (rc == SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE) {
     324           0 :                 spdk_nvmf_request_complete(req);
     325           0 :         }
     326           0 : }
     327             : 
     328             : static void
     329           2 : nvmf_bdev_ctrl_queue_io(struct spdk_nvmf_request *req, struct spdk_bdev *bdev,
     330             :                         struct spdk_io_channel *ch, spdk_bdev_io_wait_cb cb_fn, void *cb_arg)
     331             : {
     332             :         int rc;
     333             : 
     334           2 :         req->bdev_io_wait.bdev = bdev;
     335           2 :         req->bdev_io_wait.cb_fn = cb_fn;
     336           2 :         req->bdev_io_wait.cb_arg = cb_arg;
     337             : 
     338           2 :         rc = spdk_bdev_queue_io_wait(bdev, ch, &req->bdev_io_wait);
     339           2 :         if (rc != 0) {
     340           0 :                 assert(false);
     341             :         }
     342           2 :         req->qpair->group->stat.pending_bdev_io++;
     343           2 : }
     344             : 
     345             : bool
     346           0 : nvmf_bdev_zcopy_enabled(struct spdk_bdev *bdev)
     347             : {
     348           0 :         return spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_ZCOPY);
     349             : }
     350             : 
     351             : int
     352           1 : nvmf_bdev_ctrlr_read_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     353             :                          struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     354             : {
     355           4 :         struct spdk_bdev_ext_io_opts opts = {
     356             :                 .size = SPDK_SIZEOF(&opts, accel_sequence),
     357           1 :                 .memory_domain = req->memory_domain,
     358           1 :                 .memory_domain_ctx = req->memory_domain_ctx,
     359           1 :                 .accel_sequence = req->accel_sequence,
     360             :         };
     361           1 :         uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev);
     362           1 :         uint32_t block_size = spdk_bdev_desc_get_block_size(desc);
     363           1 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     364           1 :         struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
     365             :         uint64_t start_lba;
     366             :         uint64_t num_blocks;
     367             :         int rc;
     368             : 
     369           1 :         nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks);
     370           1 :         nvmf_bdev_ctrlr_get_rw_ext_params(cmd, &opts);
     371             : 
     372           1 :         if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) {
     373           0 :                 SPDK_ERRLOG("end of media\n");
     374           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     375           0 :                 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE;
     376           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     377             :         }
     378             : 
     379           1 :         if (spdk_unlikely(num_blocks * block_size > req->length)) {
     380           0 :                 SPDK_ERRLOG("Read NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n",
     381             :                             num_blocks, block_size, req->length);
     382           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     383           0 :                 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
     384           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     385             :         }
     386             : 
     387           1 :         assert(!spdk_nvmf_request_using_zcopy(req));
     388             : 
     389           2 :         rc = spdk_bdev_readv_blocks_ext(desc, ch, req->iov, req->iovcnt, start_lba, num_blocks,
     390           1 :                                         nvmf_bdev_ctrlr_complete_cmd, req, &opts);
     391           1 :         if (spdk_unlikely(rc)) {
     392           0 :                 if (rc == -ENOMEM) {
     393           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     394           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     395             :                 }
     396           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     397           0 :                 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     398           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     399             :         }
     400             : 
     401           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     402           1 : }
     403             : 
     404             : int
     405           1 : nvmf_bdev_ctrlr_write_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     406             :                           struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     407             : {
     408           4 :         struct spdk_bdev_ext_io_opts opts = {
     409             :                 .size = SPDK_SIZEOF(&opts, nvme_cdw13),
     410           1 :                 .memory_domain = req->memory_domain,
     411           1 :                 .memory_domain_ctx = req->memory_domain_ctx,
     412           1 :                 .accel_sequence = req->accel_sequence,
     413             :         };
     414           1 :         uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev);
     415           1 :         uint32_t block_size = spdk_bdev_desc_get_block_size(desc);
     416           1 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     417           1 :         struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
     418             :         uint64_t start_lba;
     419             :         uint64_t num_blocks;
     420             :         int rc;
     421             : 
     422           1 :         nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks);
     423           1 :         nvmf_bdev_ctrlr_get_rw_ext_params(cmd, &opts);
     424             : 
     425           1 :         if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) {
     426           0 :                 SPDK_ERRLOG("end of media\n");
     427           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     428           0 :                 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE;
     429           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     430             :         }
     431             : 
     432           1 :         if (spdk_unlikely(num_blocks * block_size > req->length)) {
     433           0 :                 SPDK_ERRLOG("Write NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n",
     434             :                             num_blocks, block_size, req->length);
     435           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     436           0 :                 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
     437           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     438             :         }
     439             : 
     440           1 :         assert(!spdk_nvmf_request_using_zcopy(req));
     441             : 
     442           2 :         rc = spdk_bdev_writev_blocks_ext(desc, ch, req->iov, req->iovcnt, start_lba, num_blocks,
     443           1 :                                          nvmf_bdev_ctrlr_complete_cmd, req, &opts);
     444           1 :         if (spdk_unlikely(rc)) {
     445           0 :                 if (rc == -ENOMEM) {
     446           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     447           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     448             :                 }
     449           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     450           0 :                 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     451           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     452             :         }
     453             : 
     454           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     455           1 : }
     456             : 
     457             : int
     458           4 : nvmf_bdev_ctrlr_compare_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     459             :                             struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     460             : {
     461           4 :         uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev);
     462           4 :         uint32_t block_size = spdk_bdev_desc_get_block_size(desc);
     463           4 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     464           4 :         struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
     465             :         uint64_t start_lba;
     466             :         uint64_t num_blocks;
     467             :         int rc;
     468             : 
     469           4 :         nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks);
     470             : 
     471           4 :         if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) {
     472           1 :                 SPDK_ERRLOG("end of media\n");
     473           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     474           1 :                 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE;
     475           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     476             :         }
     477             : 
     478           3 :         if (spdk_unlikely(num_blocks * block_size > req->length)) {
     479           1 :                 SPDK_ERRLOG("Compare NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n",
     480             :                             num_blocks, block_size, req->length);
     481           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     482           1 :                 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
     483           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     484             :         }
     485             : 
     486           4 :         rc = spdk_bdev_comparev_blocks(desc, ch, req->iov, req->iovcnt, start_lba, num_blocks,
     487           2 :                                        nvmf_bdev_ctrlr_complete_cmd, req);
     488           2 :         if (spdk_unlikely(rc)) {
     489           1 :                 if (rc == -ENOMEM) {
     490           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     491           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     492             :                 }
     493           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     494           1 :                 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     495           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     496             :         }
     497             : 
     498           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     499           4 : }
     500             : 
     501             : int
     502           4 : nvmf_bdev_ctrlr_compare_and_write_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     503             :                                       struct spdk_io_channel *ch, struct spdk_nvmf_request *cmp_req, struct spdk_nvmf_request *write_req)
     504             : {
     505           4 :         uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev);
     506           4 :         uint32_t block_size = spdk_bdev_desc_get_block_size(desc);
     507           4 :         struct spdk_nvme_cmd *cmp_cmd = &cmp_req->cmd->nvme_cmd;
     508           4 :         struct spdk_nvme_cmd *write_cmd = &write_req->cmd->nvme_cmd;
     509           4 :         struct spdk_nvme_cpl *rsp = &write_req->rsp->nvme_cpl;
     510             :         uint64_t write_start_lba, cmp_start_lba;
     511             :         uint64_t write_num_blocks, cmp_num_blocks;
     512             :         int rc;
     513             : 
     514           4 :         nvmf_bdev_ctrlr_get_rw_params(cmp_cmd, &cmp_start_lba, &cmp_num_blocks);
     515           4 :         nvmf_bdev_ctrlr_get_rw_params(write_cmd, &write_start_lba, &write_num_blocks);
     516             : 
     517           4 :         if (spdk_unlikely(write_start_lba != cmp_start_lba || write_num_blocks != cmp_num_blocks)) {
     518           1 :                 SPDK_ERRLOG("Fused command start lba / num blocks mismatch\n");
     519           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     520           1 :                 rsp->status.sc = SPDK_NVME_SC_INVALID_FIELD;
     521           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     522             :         }
     523             : 
     524           3 :         if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, write_start_lba,
     525             :                           write_num_blocks))) {
     526           1 :                 SPDK_ERRLOG("end of media\n");
     527           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     528           1 :                 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE;
     529           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     530             :         }
     531             : 
     532           2 :         if (spdk_unlikely(write_num_blocks * block_size > write_req->length)) {
     533           1 :                 SPDK_ERRLOG("Write NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n",
     534             :                             write_num_blocks, block_size, write_req->length);
     535           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     536           1 :                 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
     537           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     538             :         }
     539             : 
     540           2 :         rc = spdk_bdev_comparev_and_writev_blocks(desc, ch, cmp_req->iov, cmp_req->iovcnt, write_req->iov,
     541           1 :                         write_req->iovcnt, write_start_lba, write_num_blocks, nvmf_bdev_ctrlr_complete_cmd, write_req);
     542           1 :         if (spdk_unlikely(rc)) {
     543           0 :                 if (rc == -ENOMEM) {
     544           0 :                         nvmf_bdev_ctrl_queue_io(cmp_req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, cmp_req);
     545           0 :                         nvmf_bdev_ctrl_queue_io(write_req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, write_req);
     546           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     547             :                 }
     548           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     549           0 :                 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     550           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     551             :         }
     552             : 
     553           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     554           4 : }
     555             : 
     556             : int
     557           4 : nvmf_bdev_ctrlr_write_zeroes_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     558             :                                  struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     559             : {
     560           4 :         uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev);
     561           4 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     562           4 :         struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
     563           4 :         uint64_t max_write_zeroes_size = req->qpair->ctrlr->subsys->max_write_zeroes_size_kib;
     564             :         uint64_t start_lba;
     565             :         uint64_t num_blocks;
     566             :         int rc;
     567             : 
     568           4 :         nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks);
     569           4 :         if (spdk_unlikely(max_write_zeroes_size > 0 &&
     570             :                           num_blocks > (max_write_zeroes_size << 10) / spdk_bdev_desc_get_block_size(desc))) {
     571           1 :                 SPDK_ERRLOG("invalid write zeroes size, should not exceed %" PRIu64 "Kib\n", max_write_zeroes_size);
     572           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     573           1 :                 rsp->status.sc = SPDK_NVME_SC_INVALID_FIELD;
     574           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     575             :         }
     576             : 
     577           3 :         if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) {
     578           1 :                 SPDK_ERRLOG("end of media\n");
     579           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     580           1 :                 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE;
     581           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     582             :         }
     583             : 
     584           2 :         if (spdk_unlikely(cmd->cdw12_bits.write_zeroes.deac)) {
     585           0 :                 SPDK_ERRLOG("Write Zeroes Deallocate is not supported\n");
     586           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     587           0 :                 rsp->status.sc = SPDK_NVME_SC_INVALID_FIELD;
     588           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     589             :         }
     590             : 
     591           4 :         rc = spdk_bdev_write_zeroes_blocks(desc, ch, start_lba, num_blocks,
     592           2 :                                            nvmf_bdev_ctrlr_complete_cmd, req);
     593           2 :         if (spdk_unlikely(rc)) {
     594           1 :                 if (rc == -ENOMEM) {
     595           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     596           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     597             :                 }
     598           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     599           1 :                 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     600           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     601             :         }
     602             : 
     603           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     604           4 : }
     605             : 
     606             : int
     607           3 : nvmf_bdev_ctrlr_flush_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     608             :                           struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     609             : {
     610           3 :         struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl;
     611             :         int rc;
     612             : 
     613             :         /* As for NVMeoF controller, SPDK always set volatile write
     614             :          * cache bit to 1, return success for those block devices
     615             :          * which can't support FLUSH command.
     616             :          */
     617           3 :         if (!spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_FLUSH)) {
     618           1 :                 response->status.sct = SPDK_NVME_SCT_GENERIC;
     619           1 :                 response->status.sc = SPDK_NVME_SC_SUCCESS;
     620           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     621             :         }
     622             : 
     623           4 :         rc = spdk_bdev_flush_blocks(desc, ch, 0, spdk_bdev_get_num_blocks(bdev),
     624           2 :                                     nvmf_bdev_ctrlr_complete_cmd, req);
     625           2 :         if (spdk_unlikely(rc)) {
     626           1 :                 if (rc == -ENOMEM) {
     627           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     628           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     629             :                 }
     630           1 :                 response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     631           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     632             :         }
     633           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     634           3 : }
     635             : 
     636             : struct nvmf_bdev_ctrlr_unmap {
     637             :         struct spdk_nvmf_request        *req;
     638             :         uint32_t                        count;
     639             :         struct spdk_bdev_desc           *desc;
     640             :         struct spdk_bdev                *bdev;
     641             :         struct spdk_io_channel          *ch;
     642             :         uint32_t                        range_index;
     643             : };
     644             : 
     645             : static void
     646           0 : nvmf_bdev_ctrlr_unmap_cpl(struct spdk_bdev_io *bdev_io, bool success,
     647             :                           void *cb_arg)
     648             : {
     649           0 :         struct nvmf_bdev_ctrlr_unmap *unmap_ctx = cb_arg;
     650           0 :         struct spdk_nvmf_request        *req = unmap_ctx->req;
     651           0 :         struct spdk_nvme_cpl            *response = &req->rsp->nvme_cpl;
     652             :         int                             sc, sct;
     653             :         uint32_t                        cdw0;
     654             : 
     655           0 :         unmap_ctx->count--;
     656             : 
     657           0 :         if (response->status.sct == SPDK_NVME_SCT_GENERIC &&
     658           0 :             response->status.sc == SPDK_NVME_SC_SUCCESS) {
     659           0 :                 spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &sct, &sc);
     660           0 :                 response->cdw0 = cdw0;
     661           0 :                 response->status.sc = sc;
     662           0 :                 response->status.sct = sct;
     663           0 :         }
     664             : 
     665           0 :         if (unmap_ctx->count == 0) {
     666           0 :                 spdk_nvmf_request_complete(req);
     667           0 :                 free(unmap_ctx);
     668           0 :         }
     669           0 :         spdk_bdev_free_io(bdev_io);
     670           0 : }
     671             : 
     672             : static int nvmf_bdev_ctrlr_unmap(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     673             :                                  struct spdk_io_channel *ch, struct spdk_nvmf_request *req,
     674             :                                  struct nvmf_bdev_ctrlr_unmap *unmap_ctx);
     675             : static void
     676           0 : nvmf_bdev_ctrlr_unmap_resubmit(void *arg)
     677             : {
     678           0 :         struct nvmf_bdev_ctrlr_unmap *unmap_ctx = arg;
     679           0 :         struct spdk_nvmf_request *req = unmap_ctx->req;
     680           0 :         struct spdk_bdev_desc *desc = unmap_ctx->desc;
     681           0 :         struct spdk_bdev *bdev = unmap_ctx->bdev;
     682           0 :         struct spdk_io_channel *ch = unmap_ctx->ch;
     683             : 
     684           0 :         nvmf_bdev_ctrlr_unmap(bdev, desc, ch, req, unmap_ctx);
     685           0 : }
     686             : 
     687             : static int
     688           0 : nvmf_bdev_ctrlr_unmap(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     689             :                       struct spdk_io_channel *ch, struct spdk_nvmf_request *req,
     690             :                       struct nvmf_bdev_ctrlr_unmap *unmap_ctx)
     691             : {
     692             :         uint16_t nr, i;
     693           0 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     694           0 :         struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl;
     695           0 :         uint64_t max_discard_size = req->qpair->ctrlr->subsys->max_discard_size_kib;
     696           0 :         uint32_t block_size = spdk_bdev_desc_get_block_size(desc);
     697             :         struct spdk_iov_xfer ix;
     698             :         uint64_t lba;
     699             :         uint32_t lba_count;
     700             :         int rc;
     701             : 
     702           0 :         nr = cmd->cdw10_bits.dsm.nr + 1;
     703           0 :         if (nr * sizeof(struct spdk_nvme_dsm_range) > req->length) {
     704           0 :                 SPDK_ERRLOG("Dataset Management number of ranges > SGL length\n");
     705           0 :                 response->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
     706           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     707             :         }
     708             : 
     709           0 :         if (unmap_ctx == NULL) {
     710           0 :                 unmap_ctx = calloc(1, sizeof(*unmap_ctx));
     711           0 :                 if (!unmap_ctx) {
     712           0 :                         response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     713           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     714             :                 }
     715             : 
     716           0 :                 unmap_ctx->req = req;
     717           0 :                 unmap_ctx->desc = desc;
     718           0 :                 unmap_ctx->ch = ch;
     719           0 :                 unmap_ctx->bdev = bdev;
     720             : 
     721           0 :                 response->status.sct = SPDK_NVME_SCT_GENERIC;
     722           0 :                 response->status.sc = SPDK_NVME_SC_SUCCESS;
     723           0 :         } else {
     724           0 :                 unmap_ctx->count--;  /* dequeued */
     725             :         }
     726             : 
     727           0 :         spdk_iov_xfer_init(&ix, req->iov, req->iovcnt);
     728             : 
     729           0 :         for (i = unmap_ctx->range_index; i < nr; i++) {
     730           0 :                 struct spdk_nvme_dsm_range dsm_range = { 0 };
     731             : 
     732           0 :                 spdk_iov_xfer_to_buf(&ix, &dsm_range, sizeof(dsm_range));
     733             : 
     734           0 :                 lba = dsm_range.starting_lba;
     735           0 :                 lba_count = dsm_range.length;
     736           0 :                 if (max_discard_size > 0 && lba_count > (max_discard_size << 10) / block_size) {
     737           0 :                         SPDK_ERRLOG("invalid unmap size %" PRIu32 " blocks, should not exceed %" PRIu64 " blocks\n",
     738             :                                     lba_count, max_discard_size << 1);
     739           0 :                         response->status.sct = SPDK_NVME_SCT_GENERIC;
     740           0 :                         response->status.sc = SPDK_NVME_SC_INVALID_FIELD;
     741           0 :                         break;
     742             :                 }
     743             : 
     744           0 :                 unmap_ctx->count++;
     745             : 
     746           0 :                 rc = spdk_bdev_unmap_blocks(desc, ch, lba, lba_count,
     747           0 :                                             nvmf_bdev_ctrlr_unmap_cpl, unmap_ctx);
     748           0 :                 if (rc) {
     749           0 :                         if (rc == -ENOMEM) {
     750           0 :                                 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_bdev_ctrlr_unmap_resubmit, unmap_ctx);
     751             :                                 /* Unmap was not yet submitted to bdev */
     752             :                                 /* unmap_ctx->count will be decremented when the request is dequeued */
     753           0 :                                 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     754             :                         }
     755           0 :                         response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     756           0 :                         unmap_ctx->count--;
     757             :                         /* We can't return here - we may have to wait for any other
     758             :                                 * unmaps already sent to complete */
     759           0 :                         break;
     760             :                 }
     761           0 :                 unmap_ctx->range_index++;
     762           0 :         }
     763             : 
     764           0 :         if (unmap_ctx->count == 0) {
     765           0 :                 free(unmap_ctx);
     766           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     767             :         }
     768             : 
     769           0 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     770           0 : }
     771             : 
     772             : int
     773           0 : nvmf_bdev_ctrlr_dsm_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     774             :                         struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     775             : {
     776           0 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     777           0 :         struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl;
     778             : 
     779           0 :         if (cmd->cdw11_bits.dsm.ad) {
     780           0 :                 return nvmf_bdev_ctrlr_unmap(bdev, desc, ch, req, NULL);
     781             :         }
     782             : 
     783           0 :         response->status.sct = SPDK_NVME_SCT_GENERIC;
     784           0 :         response->status.sc = SPDK_NVME_SC_SUCCESS;
     785           0 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     786           0 : }
     787             : 
     788             : int
     789           5 : nvmf_bdev_ctrlr_copy_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     790             :                          struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     791             : {
     792           5 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     793           5 :         struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl;
     794           5 :         uint64_t sdlba = ((uint64_t)cmd->cdw11 << 32) + cmd->cdw10;
     795           5 :         struct spdk_nvme_scc_source_range range = { 0 };
     796             :         struct spdk_iov_xfer ix;
     797             :         int rc;
     798             : 
     799           5 :         SPDK_DEBUGLOG(nvmf, "Copy command: SDLBA %lu, NR %u, desc format %u, PRINFOR %u, "
     800             :                       "DTYPE %u, STCW %u, PRINFOW %u, FUA %u, LR %u\n",
     801             :                       sdlba,
     802             :                       cmd->cdw12_bits.copy.nr,
     803             :                       cmd->cdw12_bits.copy.df,
     804             :                       cmd->cdw12_bits.copy.prinfor,
     805             :                       cmd->cdw12_bits.copy.dtype,
     806             :                       cmd->cdw12_bits.copy.stcw,
     807             :                       cmd->cdw12_bits.copy.prinfow,
     808             :                       cmd->cdw12_bits.copy.fua,
     809             :                       cmd->cdw12_bits.copy.lr);
     810             : 
     811           5 :         if (spdk_unlikely(req->length != (cmd->cdw12_bits.copy.nr + 1) *
     812             :                           sizeof(struct spdk_nvme_scc_source_range))) {
     813           0 :                 response->status.sct = SPDK_NVME_SCT_GENERIC;
     814           0 :                 response->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
     815           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     816             :         }
     817             : 
     818             :         /*
     819             :          * We support only one source range, and rely on this with the xfer
     820             :          * below.
     821             :          */
     822           5 :         if (cmd->cdw12_bits.copy.nr > 0) {
     823           1 :                 response->status.sct = SPDK_NVME_SCT_COMMAND_SPECIFIC;
     824           1 :                 response->status.sc = SPDK_NVME_SC_CMD_SIZE_LIMIT_SIZE_EXCEEDED;
     825           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     826             :         }
     827             : 
     828           4 :         if (cmd->cdw12_bits.copy.df != 0) {
     829           1 :                 response->status.sct = SPDK_NVME_SCT_GENERIC;
     830           1 :                 response->status.sc = SPDK_NVME_SC_INVALID_FIELD;
     831           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     832             :         }
     833             : 
     834           3 :         spdk_iov_xfer_init(&ix, req->iov, req->iovcnt);
     835           3 :         spdk_iov_xfer_to_buf(&ix, &range, sizeof(range));
     836             : 
     837           6 :         rc = spdk_bdev_copy_blocks(desc, ch, sdlba, range.slba, range.nlb + 1,
     838           3 :                                    nvmf_bdev_ctrlr_complete_cmd, req);
     839           3 :         if (spdk_unlikely(rc)) {
     840           1 :                 if (rc == -ENOMEM) {
     841           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     842           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     843             :                 }
     844             : 
     845           1 :                 response->status.sct = SPDK_NVME_SCT_GENERIC;
     846           1 :                 response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     847           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     848             :         }
     849             : 
     850           2 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     851           5 : }
     852             : 
     853             : int
     854           4 : nvmf_bdev_ctrlr_nvme_passthru_io(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     855             :                                  struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     856             : {
     857             :         int rc;
     858             : 
     859           8 :         rc = spdk_bdev_nvme_iov_passthru_md(desc, ch, &req->cmd->nvme_cmd, req->iov, req->iovcnt,
     860           4 :                                             req->length, NULL, 0, nvmf_bdev_ctrlr_complete_cmd, req);
     861             : 
     862           4 :         if (spdk_unlikely(rc)) {
     863           2 :                 if (rc == -ENOMEM) {
     864           1 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     865           1 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     866             :                 }
     867           1 :                 req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
     868           1 :                 req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INVALID_OPCODE;
     869           1 :                 req->rsp->nvme_cpl.status.dnr = 1;
     870           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     871             :         }
     872             : 
     873           2 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     874           4 : }
     875             : 
     876             : int
     877           4 : spdk_nvmf_bdev_ctrlr_nvme_passthru_admin(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     878             :                 struct spdk_io_channel *ch, struct spdk_nvmf_request *req,
     879             :                 spdk_nvmf_nvme_passthru_cmd_cb cb_fn)
     880             : {
     881             :         int rc;
     882             : 
     883           4 :         if (spdk_unlikely(req->iovcnt > 1)) {
     884           0 :                 req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
     885           0 :                 req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     886           0 :                 req->rsp->nvme_cpl.status.dnr = 1;
     887           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     888             :         }
     889             : 
     890           4 :         req->cmd_cb_fn = cb_fn;
     891             : 
     892           8 :         rc = spdk_bdev_nvme_admin_passthru(desc, ch, &req->cmd->nvme_cmd, req->iov[0].iov_base, req->length,
     893           4 :                                            nvmf_bdev_ctrlr_complete_admin_cmd, req);
     894           4 :         if (spdk_unlikely(rc)) {
     895           2 :                 if (rc == -ENOMEM) {
     896           1 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_admin_cmd_resubmit, req);
     897           1 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     898             :                 }
     899           1 :                 req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
     900           1 :                 if (rc == -ENOTSUP) {
     901           1 :                         req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INVALID_OPCODE;
     902           1 :                 } else {
     903           0 :                         req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     904             :                 }
     905             : 
     906           1 :                 req->rsp->nvme_cpl.status.dnr = 1;
     907           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     908             :         }
     909             : 
     910           2 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     911           4 : }
     912             : 
     913             : static void
     914           0 : nvmf_bdev_ctrlr_complete_abort_cmd(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg)
     915             : {
     916           0 :         struct spdk_nvmf_request *req = cb_arg;
     917             : 
     918           0 :         if (success) {
     919           0 :                 req->rsp->nvme_cpl.cdw0 &= ~1U;
     920           0 :         }
     921             : 
     922           0 :         spdk_nvmf_request_complete(req);
     923           0 :         spdk_bdev_free_io(bdev_io);
     924           0 : }
     925             : 
     926             : int
     927           0 : spdk_nvmf_bdev_ctrlr_abort_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     928             :                                struct spdk_io_channel *ch, struct spdk_nvmf_request *req,
     929             :                                struct spdk_nvmf_request *req_to_abort)
     930             : {
     931             :         int rc;
     932             : 
     933           0 :         assert((req->rsp->nvme_cpl.cdw0 & 1U) != 0);
     934             : 
     935           0 :         rc = spdk_bdev_abort(desc, ch, req_to_abort, nvmf_bdev_ctrlr_complete_abort_cmd, req);
     936           0 :         if (spdk_likely(rc == 0)) {
     937           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     938           0 :         } else if (rc == -ENOMEM) {
     939           0 :                 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_admin_cmd_resubmit, req);
     940           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     941             :         } else {
     942           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     943             :         }
     944           0 : }
     945             : 
     946             : bool
     947           2 : nvmf_bdev_ctrlr_get_dif_ctx(struct spdk_bdev_desc *desc, struct spdk_nvme_cmd *cmd,
     948             :                             struct spdk_dif_ctx *dif_ctx)
     949             : {
     950           2 :         uint32_t init_ref_tag, dif_check_flags = 0;
     951             :         int rc;
     952             :         struct spdk_dif_ctx_init_ext_opts dif_opts;
     953             : 
     954           2 :         if (spdk_bdev_desc_get_md_size(desc) == 0) {
     955           1 :                 return false;
     956             :         }
     957             : 
     958             :         /* Initial Reference Tag is the lower 32 bits of the start LBA. */
     959           1 :         init_ref_tag = (uint32_t)from_le64(&cmd->cdw10);
     960             : 
     961           1 :         if (spdk_bdev_desc_is_dif_check_enabled(desc, SPDK_DIF_CHECK_TYPE_REFTAG)) {
     962           0 :                 dif_check_flags |= SPDK_DIF_FLAGS_REFTAG_CHECK;
     963           0 :         }
     964             : 
     965           1 :         if (spdk_bdev_desc_is_dif_check_enabled(desc, SPDK_DIF_CHECK_TYPE_GUARD)) {
     966           0 :                 dif_check_flags |= SPDK_DIF_FLAGS_GUARD_CHECK;
     967           0 :         }
     968             : 
     969           1 :         dif_opts.size = SPDK_SIZEOF(&dif_opts, dif_pi_format);
     970           1 :         dif_opts.dif_pi_format = SPDK_DIF_PI_FORMAT_16;
     971           2 :         rc = spdk_dif_ctx_init(dif_ctx,
     972           1 :                                spdk_bdev_desc_get_block_size(desc),
     973           1 :                                spdk_bdev_desc_get_md_size(desc),
     974           1 :                                spdk_bdev_desc_is_md_interleaved(desc),
     975           1 :                                spdk_bdev_desc_is_dif_head_of_md(desc),
     976           1 :                                spdk_bdev_desc_get_dif_type(desc),
     977           1 :                                dif_check_flags,
     978           1 :                                init_ref_tag, 0, 0, 0, 0, &dif_opts);
     979             : 
     980           1 :         return (rc == 0) ? true : false;
     981           2 : }
     982             : 
     983             : static void
     984           0 : nvmf_bdev_ctrlr_zcopy_start_complete(struct spdk_bdev_io *bdev_io, bool success,
     985             :                                      void *cb_arg)
     986             : {
     987           0 :         struct spdk_nvmf_request        *req = cb_arg;
     988             :         struct iovec *iov;
     989           0 :         int iovcnt = 0;
     990             : 
     991           0 :         if (spdk_unlikely(!success)) {
     992           0 :                 int                     sc = 0, sct = 0;
     993           0 :                 uint32_t                cdw0 = 0;
     994           0 :                 struct spdk_nvme_cpl    *response = &req->rsp->nvme_cpl;
     995           0 :                 spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &sct, &sc);
     996             : 
     997           0 :                 response->cdw0 = cdw0;
     998           0 :                 response->status.sc = sc;
     999           0 :                 response->status.sct = sct;
    1000             : 
    1001           0 :                 spdk_bdev_free_io(bdev_io);
    1002           0 :                 spdk_nvmf_request_complete(req);
    1003           0 :                 return;
    1004             :         }
    1005             : 
    1006           0 :         spdk_bdev_io_get_iovec(bdev_io, &iov, &iovcnt);
    1007             : 
    1008           0 :         assert(iovcnt <= NVMF_REQ_MAX_BUFFERS);
    1009           0 :         assert(iovcnt > 0);
    1010             : 
    1011           0 :         req->iovcnt = iovcnt;
    1012             : 
    1013           0 :         assert(req->iov == iov);
    1014             : 
    1015           0 :         req->zcopy_bdev_io = bdev_io; /* Preserve the bdev_io for the end zcopy */
    1016             : 
    1017           0 :         spdk_nvmf_request_complete(req);
    1018             :         /* Don't free the bdev_io here as it is needed for the END ZCOPY */
    1019           0 : }
    1020             : 
    1021             : int
    1022           3 : nvmf_bdev_ctrlr_zcopy_start(struct spdk_bdev *bdev,
    1023             :                             struct spdk_bdev_desc *desc,
    1024             :                             struct spdk_io_channel *ch,
    1025             :                             struct spdk_nvmf_request *req)
    1026             : {
    1027           3 :         struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
    1028           3 :         uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev);
    1029           3 :         uint32_t block_size = spdk_bdev_desc_get_block_size(desc);
    1030             :         uint64_t start_lba;
    1031             :         uint64_t num_blocks;
    1032             :         int rc;
    1033             : 
    1034           3 :         nvmf_bdev_ctrlr_get_rw_params(&req->cmd->nvme_cmd, &start_lba, &num_blocks);
    1035             : 
    1036           3 :         if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) {
    1037           1 :                 SPDK_ERRLOG("end of media\n");
    1038           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
    1039           1 :                 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE;
    1040           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
    1041             :         }
    1042             : 
    1043           2 :         if (spdk_unlikely(num_blocks * block_size > req->length)) {
    1044           1 :                 SPDK_ERRLOG("Read NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n",
    1045             :                             num_blocks, block_size, req->length);
    1046           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
    1047           1 :                 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
    1048           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
    1049             :         }
    1050             : 
    1051           1 :         bool populate = (req->cmd->nvme_cmd.opc == SPDK_NVME_OPC_READ) ? true : false;
    1052             : 
    1053           2 :         rc = spdk_bdev_zcopy_start(desc, ch, req->iov, req->iovcnt, start_lba,
    1054           1 :                                    num_blocks, populate, nvmf_bdev_ctrlr_zcopy_start_complete, req);
    1055           1 :         if (spdk_unlikely(rc != 0)) {
    1056           0 :                 if (rc == -ENOMEM) {
    1057           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
    1058           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
    1059             :                 }
    1060           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
    1061           0 :                 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
    1062           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
    1063             :         }
    1064             : 
    1065           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
    1066           3 : }
    1067             : 
    1068             : static void
    1069           0 : nvmf_bdev_ctrlr_zcopy_end_complete(struct spdk_bdev_io *bdev_io, bool success,
    1070             :                                    void *cb_arg)
    1071             : {
    1072           0 :         struct spdk_nvmf_request        *req = cb_arg;
    1073             : 
    1074           0 :         if (spdk_unlikely(!success)) {
    1075           0 :                 int                     sc = 0, sct = 0;
    1076           0 :                 uint32_t                cdw0 = 0;
    1077           0 :                 struct spdk_nvme_cpl    *response = &req->rsp->nvme_cpl;
    1078           0 :                 spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &sct, &sc);
    1079             : 
    1080           0 :                 response->cdw0 = cdw0;
    1081           0 :                 response->status.sc = sc;
    1082           0 :                 response->status.sct = sct;
    1083           0 :         }
    1084             : 
    1085           0 :         spdk_bdev_free_io(bdev_io);
    1086           0 :         req->zcopy_bdev_io = NULL;
    1087           0 :         spdk_nvmf_request_complete(req);
    1088           0 : }
    1089             : 
    1090             : void
    1091           0 : nvmf_bdev_ctrlr_zcopy_end(struct spdk_nvmf_request *req, bool commit)
    1092             : {
    1093             :         int rc __attribute__((unused));
    1094             : 
    1095           0 :         rc = spdk_bdev_zcopy_end(req->zcopy_bdev_io, commit, nvmf_bdev_ctrlr_zcopy_end_complete, req);
    1096             : 
    1097             :         /* The only way spdk_bdev_zcopy_end() can fail is if we pass a bdev_io type that isn't ZCOPY */
    1098           0 :         assert(rc == 0);
    1099           0 : }

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