LCOV - code coverage report
Current view: top level - lib/nvmf - ctrlr_bdev.c (source / functions) Hit Total Coverage
Test: ut_cov_unit.info Lines: 322 606 53.1 %
Date: 2024-11-20 13:45:10 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             :                         /* NVMf library doesn't process PRACT and PRCHK flags, we
     146             :                          * leave the use of extended LBA buffer to users.
     147             :                          */
     148           1 :                         nsdata->dps.pit = SPDK_NVME_FMT_NVM_PROTECTION_DISABLE;
     149           1 :                 }
     150           1 :         } else {
     151           1 :                 nsdata->lbaf[0].ms = 0;
     152           1 :                 nsdata->lbaf[0].lbads = spdk_u32log2(spdk_bdev_get_data_block_size(bdev));
     153             :         }
     154             : 
     155           2 :         phys_blocklen = spdk_bdev_get_physical_block_size(bdev);
     156           2 :         assert(phys_blocklen > 0);
     157             :         /* Linux driver uses min(nawupf, npwg) to set physical_block_size */
     158           2 :         nsdata->nsfeat.optperf = 1;
     159           2 :         nsdata->nsfeat.ns_atomic_write_unit = 1;
     160           2 :         nsdata->npwg = (phys_blocklen >> nsdata->lbaf[0].lbads) - 1;
     161           2 :         nsdata->nawupf = nsdata->npwg;
     162           2 :         nsdata->npwa = nsdata->npwg;
     163           2 :         nsdata->npdg = nsdata->npwg;
     164           2 :         nsdata->npda = nsdata->npwg;
     165             : 
     166           2 :         if (spdk_bdev_get_write_unit_size(bdev) == 1) {
     167           2 :                 nsdata->noiob = spdk_bdev_get_optimal_io_boundary(bdev);
     168           2 :         }
     169           2 :         nsdata->nmic.can_share = 1;
     170           2 :         if (nvmf_ns_is_ptpl_capable(ns)) {
     171           2 :                 nsdata->nsrescap.rescap.persist = 1;
     172           2 :         }
     173           2 :         nsdata->nsrescap.rescap.write_exclusive = 1;
     174           2 :         nsdata->nsrescap.rescap.exclusive_access = 1;
     175           2 :         nsdata->nsrescap.rescap.write_exclusive_reg_only = 1;
     176           2 :         nsdata->nsrescap.rescap.exclusive_access_reg_only = 1;
     177           2 :         nsdata->nsrescap.rescap.write_exclusive_all_reg = 1;
     178           2 :         nsdata->nsrescap.rescap.exclusive_access_all_reg = 1;
     179           2 :         nsdata->nsrescap.rescap.ignore_existing_key = 1;
     180             : 
     181             :         SPDK_STATIC_ASSERT(sizeof(nsdata->nguid) == sizeof(ns->opts.nguid), "size mismatch");
     182           2 :         memcpy(nsdata->nguid, ns->opts.nguid, sizeof(nsdata->nguid));
     183             : 
     184             :         SPDK_STATIC_ASSERT(sizeof(nsdata->eui64) == sizeof(ns->opts.eui64), "size mismatch");
     185           2 :         memcpy(&nsdata->eui64, ns->opts.eui64, sizeof(nsdata->eui64));
     186             : 
     187             :         /* For now we support just one source range for copy command */
     188           2 :         nsdata->msrc = 0;
     189             : 
     190           2 :         max_copy = spdk_bdev_get_max_copy(bdev);
     191           2 :         if (max_copy == 0 || max_copy > UINT16_MAX) {
     192             :                 /* Zero means copy size is unlimited */
     193           2 :                 nsdata->mcl = UINT16_MAX;
     194           2 :                 nsdata->mssrl = UINT16_MAX;
     195           2 :         } else {
     196           0 :                 nsdata->mcl = max_copy;
     197           0 :                 nsdata->mssrl = max_copy;
     198             :         }
     199           2 : }
     200             : 
     201             : void
     202           0 : nvmf_bdev_ctrlr_identify_iocs_nvm(struct spdk_nvmf_ns *ns,
     203             :                                   struct spdk_nvme_nvm_ns_data *nsdata_nvm)
     204             : {
     205           0 :         struct spdk_bdev_desc *desc = ns->desc;
     206             :         uint8_t _16bpists;
     207             :         uint32_t sts, pif;
     208             : 
     209           0 :         if (spdk_bdev_desc_get_dif_type(desc) == SPDK_DIF_DISABLE) {
     210           0 :                 return;
     211             :         }
     212             : 
     213           0 :         pif = spdk_bdev_desc_get_dif_pi_format(desc);
     214             : 
     215             :         /*
     216             :          * 16BPISTS shall be 1 for 32/64b Guard PI.
     217             :          * STCRS shall be 1 if 16BPISTS is 1.
     218             :          * 16 is the minimum value of STS for 32b Guard PI.
     219             :          */
     220           0 :         switch (pif) {
     221             :         case SPDK_DIF_PI_FORMAT_16:
     222           0 :                 _16bpists = 0;
     223           0 :                 sts = 0;
     224           0 :                 break;
     225             :         case SPDK_DIF_PI_FORMAT_32:
     226           0 :                 _16bpists = 1;
     227           0 :                 sts = 16;
     228           0 :                 break;
     229             :         case SPDK_DIF_PI_FORMAT_64:
     230           0 :                 _16bpists = 1;
     231           0 :                 sts = 0;
     232           0 :                 break;
     233             :         default:
     234           0 :                 SPDK_WARNLOG("PI format %u is not supported\n", pif);
     235           0 :                 return;
     236             :         }
     237             : 
     238             :         /* For 16b Guard PI, Storage Tag is not available because we set STS to 0.
     239             :          * In this case, we do not have to set 16BPISTM to 1. For simplicity,
     240             :          * set 16BPISTM to 0 and set LBSTM to all zeroes.
     241             :          *
     242             :          * We will revisit here when we find any OS uses Storage Tag.
     243             :          */
     244           0 :         nsdata_nvm->lbstm = 0;
     245           0 :         nsdata_nvm->pic._16bpistm = 0;
     246             : 
     247           0 :         nsdata_nvm->pic._16bpists = _16bpists;
     248           0 :         nsdata_nvm->pic.stcrs = 0;
     249           0 :         nsdata_nvm->elbaf[0].sts = sts;
     250           0 :         nsdata_nvm->elbaf[0].pif = pif;
     251           0 : }
     252             : 
     253             : static void
     254          22 : nvmf_bdev_ctrlr_get_rw_params(const struct spdk_nvme_cmd *cmd, uint64_t *start_lba,
     255             :                               uint64_t *num_blocks)
     256             : {
     257             :         /* SLBA: CDW10 and CDW11 */
     258          22 :         *start_lba = from_le64(&cmd->cdw10);
     259             : 
     260             :         /* NLB: CDW12 bits 15:00, 0's based */
     261          22 :         *num_blocks = (from_le32(&cmd->cdw12) & 0xFFFFu) + 1;
     262          22 : }
     263             : 
     264             : static void
     265           2 : nvmf_bdev_ctrlr_get_rw_ext_params(const struct spdk_nvme_cmd *cmd,
     266             :                                   struct spdk_bdev_ext_io_opts *opts)
     267             : {
     268             :         /* Get CDW12 values */
     269           2 :         opts->nvme_cdw12.raw = from_le32(&cmd->cdw12);
     270             : 
     271             :         /* Get CDW13 values */
     272           2 :         opts->nvme_cdw13.raw = from_le32(&cmd->cdw13);
     273           2 : }
     274             : 
     275             : static bool
     276          27 : nvmf_bdev_ctrlr_lba_in_range(uint64_t bdev_num_blocks, uint64_t io_start_lba,
     277             :                              uint64_t io_num_blocks)
     278             : {
     279          27 :         if (io_start_lba + io_num_blocks > bdev_num_blocks ||
     280          19 :             io_start_lba + io_num_blocks < io_start_lba) {
     281          10 :                 return false;
     282             :         }
     283             : 
     284          17 :         return true;
     285          27 : }
     286             : 
     287             : static void
     288           0 : nvmf_ctrlr_process_io_cmd_resubmit(void *arg)
     289             : {
     290           0 :         struct spdk_nvmf_request *req = arg;
     291             :         int rc;
     292             : 
     293           0 :         rc = nvmf_ctrlr_process_io_cmd(req);
     294           0 :         if (rc == SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE) {
     295           0 :                 spdk_nvmf_request_complete(req);
     296           0 :         }
     297           0 : }
     298             : 
     299             : static void
     300           0 : nvmf_ctrlr_process_admin_cmd_resubmit(void *arg)
     301             : {
     302           0 :         struct spdk_nvmf_request *req = arg;
     303             :         int rc;
     304             : 
     305           0 :         rc = nvmf_ctrlr_process_admin_cmd(req);
     306           0 :         if (rc == SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE) {
     307           0 :                 spdk_nvmf_request_complete(req);
     308           0 :         }
     309           0 : }
     310             : 
     311             : static void
     312           2 : nvmf_bdev_ctrl_queue_io(struct spdk_nvmf_request *req, struct spdk_bdev *bdev,
     313             :                         struct spdk_io_channel *ch, spdk_bdev_io_wait_cb cb_fn, void *cb_arg)
     314             : {
     315             :         int rc;
     316             : 
     317           2 :         req->bdev_io_wait.bdev = bdev;
     318           2 :         req->bdev_io_wait.cb_fn = cb_fn;
     319           2 :         req->bdev_io_wait.cb_arg = cb_arg;
     320             : 
     321           2 :         rc = spdk_bdev_queue_io_wait(bdev, ch, &req->bdev_io_wait);
     322           2 :         if (rc != 0) {
     323           0 :                 assert(false);
     324             :         }
     325           2 :         req->qpair->group->stat.pending_bdev_io++;
     326           2 : }
     327             : 
     328             : bool
     329           0 : nvmf_bdev_zcopy_enabled(struct spdk_bdev *bdev)
     330             : {
     331           0 :         return spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_ZCOPY);
     332             : }
     333             : 
     334             : int
     335           1 : nvmf_bdev_ctrlr_read_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     336             :                          struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     337             : {
     338           4 :         struct spdk_bdev_ext_io_opts opts = {
     339             :                 .size = SPDK_SIZEOF(&opts, accel_sequence),
     340           1 :                 .memory_domain = req->memory_domain,
     341           1 :                 .memory_domain_ctx = req->memory_domain_ctx,
     342           1 :                 .accel_sequence = req->accel_sequence,
     343             :         };
     344           1 :         uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev);
     345           1 :         uint32_t block_size = spdk_bdev_desc_get_block_size(desc);
     346           1 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     347           1 :         struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
     348             :         uint64_t start_lba;
     349             :         uint64_t num_blocks;
     350             :         int rc;
     351             : 
     352           1 :         nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks);
     353             : 
     354           1 :         if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) {
     355           0 :                 SPDK_ERRLOG("end of media\n");
     356           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     357           0 :                 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE;
     358           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     359             :         }
     360             : 
     361           1 :         if (spdk_unlikely(num_blocks * block_size > req->length)) {
     362           0 :                 SPDK_ERRLOG("Read NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n",
     363             :                             num_blocks, block_size, req->length);
     364           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     365           0 :                 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
     366           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     367             :         }
     368             : 
     369           1 :         assert(!spdk_nvmf_request_using_zcopy(req));
     370             : 
     371           2 :         rc = spdk_bdev_readv_blocks_ext(desc, ch, req->iov, req->iovcnt, start_lba, num_blocks,
     372           1 :                                         nvmf_bdev_ctrlr_complete_cmd, req, &opts);
     373           1 :         if (spdk_unlikely(rc)) {
     374           0 :                 if (rc == -ENOMEM) {
     375           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     376           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     377             :                 }
     378           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     379           0 :                 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     380           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     381             :         }
     382             : 
     383           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     384           1 : }
     385             : 
     386             : int
     387           1 : nvmf_bdev_ctrlr_write_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     388             :                           struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     389             : {
     390           4 :         struct spdk_bdev_ext_io_opts opts = {
     391             :                 .size = SPDK_SIZEOF(&opts, nvme_cdw13),
     392           1 :                 .memory_domain = req->memory_domain,
     393           1 :                 .memory_domain_ctx = req->memory_domain_ctx,
     394           1 :                 .accel_sequence = req->accel_sequence,
     395             :         };
     396           1 :         uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev);
     397           1 :         uint32_t block_size = spdk_bdev_desc_get_block_size(desc);
     398           1 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     399           1 :         struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
     400             :         uint64_t start_lba;
     401             :         uint64_t num_blocks;
     402             :         int rc;
     403             : 
     404           1 :         nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks);
     405           1 :         nvmf_bdev_ctrlr_get_rw_ext_params(cmd, &opts);
     406             : 
     407           1 :         if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) {
     408           0 :                 SPDK_ERRLOG("end of media\n");
     409           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     410           0 :                 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE;
     411           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     412             :         }
     413             : 
     414           1 :         if (spdk_unlikely(num_blocks * block_size > req->length)) {
     415           0 :                 SPDK_ERRLOG("Write NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n",
     416             :                             num_blocks, block_size, req->length);
     417           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     418           0 :                 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
     419           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     420             :         }
     421             : 
     422           1 :         assert(!spdk_nvmf_request_using_zcopy(req));
     423             : 
     424           2 :         rc = spdk_bdev_writev_blocks_ext(desc, ch, req->iov, req->iovcnt, start_lba, num_blocks,
     425           1 :                                          nvmf_bdev_ctrlr_complete_cmd, req, &opts);
     426           1 :         if (spdk_unlikely(rc)) {
     427           0 :                 if (rc == -ENOMEM) {
     428           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     429           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     430             :                 }
     431           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     432           0 :                 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     433           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     434             :         }
     435             : 
     436           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     437           1 : }
     438             : 
     439             : int
     440           4 : nvmf_bdev_ctrlr_compare_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     441             :                             struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     442             : {
     443           4 :         uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev);
     444           4 :         uint32_t block_size = spdk_bdev_desc_get_block_size(desc);
     445           4 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     446           4 :         struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
     447             :         uint64_t start_lba;
     448             :         uint64_t num_blocks;
     449             :         int rc;
     450             : 
     451           4 :         nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks);
     452             : 
     453           4 :         if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) {
     454           1 :                 SPDK_ERRLOG("end of media\n");
     455           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     456           1 :                 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE;
     457           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     458             :         }
     459             : 
     460           3 :         if (spdk_unlikely(num_blocks * block_size > req->length)) {
     461           1 :                 SPDK_ERRLOG("Compare NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n",
     462             :                             num_blocks, block_size, req->length);
     463           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     464           1 :                 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
     465           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     466             :         }
     467             : 
     468           4 :         rc = spdk_bdev_comparev_blocks(desc, ch, req->iov, req->iovcnt, start_lba, num_blocks,
     469           2 :                                        nvmf_bdev_ctrlr_complete_cmd, req);
     470           2 :         if (spdk_unlikely(rc)) {
     471           1 :                 if (rc == -ENOMEM) {
     472           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     473           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     474             :                 }
     475           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     476           1 :                 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     477           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     478             :         }
     479             : 
     480           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     481           4 : }
     482             : 
     483             : int
     484           4 : nvmf_bdev_ctrlr_compare_and_write_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     485             :                                       struct spdk_io_channel *ch, struct spdk_nvmf_request *cmp_req, struct spdk_nvmf_request *write_req)
     486             : {
     487           4 :         uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev);
     488           4 :         uint32_t block_size = spdk_bdev_desc_get_block_size(desc);
     489           4 :         struct spdk_nvme_cmd *cmp_cmd = &cmp_req->cmd->nvme_cmd;
     490           4 :         struct spdk_nvme_cmd *write_cmd = &write_req->cmd->nvme_cmd;
     491           4 :         struct spdk_nvme_cpl *rsp = &write_req->rsp->nvme_cpl;
     492             :         uint64_t write_start_lba, cmp_start_lba;
     493             :         uint64_t write_num_blocks, cmp_num_blocks;
     494             :         int rc;
     495             : 
     496           4 :         nvmf_bdev_ctrlr_get_rw_params(cmp_cmd, &cmp_start_lba, &cmp_num_blocks);
     497           4 :         nvmf_bdev_ctrlr_get_rw_params(write_cmd, &write_start_lba, &write_num_blocks);
     498             : 
     499           4 :         if (spdk_unlikely(write_start_lba != cmp_start_lba || write_num_blocks != cmp_num_blocks)) {
     500           1 :                 SPDK_ERRLOG("Fused command start lba / num blocks mismatch\n");
     501           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     502           1 :                 rsp->status.sc = SPDK_NVME_SC_INVALID_FIELD;
     503           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     504             :         }
     505             : 
     506           3 :         if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, write_start_lba,
     507             :                           write_num_blocks))) {
     508           1 :                 SPDK_ERRLOG("end of media\n");
     509           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     510           1 :                 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE;
     511           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     512             :         }
     513             : 
     514           2 :         if (spdk_unlikely(write_num_blocks * block_size > write_req->length)) {
     515           1 :                 SPDK_ERRLOG("Write NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n",
     516             :                             write_num_blocks, block_size, write_req->length);
     517           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     518           1 :                 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
     519           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     520             :         }
     521             : 
     522           2 :         rc = spdk_bdev_comparev_and_writev_blocks(desc, ch, cmp_req->iov, cmp_req->iovcnt, write_req->iov,
     523           1 :                         write_req->iovcnt, write_start_lba, write_num_blocks, nvmf_bdev_ctrlr_complete_cmd, write_req);
     524           1 :         if (spdk_unlikely(rc)) {
     525           0 :                 if (rc == -ENOMEM) {
     526           0 :                         nvmf_bdev_ctrl_queue_io(cmp_req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, cmp_req);
     527           0 :                         nvmf_bdev_ctrl_queue_io(write_req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, write_req);
     528           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     529             :                 }
     530           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     531           0 :                 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     532           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     533             :         }
     534             : 
     535           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     536           4 : }
     537             : 
     538             : int
     539           4 : nvmf_bdev_ctrlr_write_zeroes_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     540             :                                  struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     541             : {
     542           4 :         uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev);
     543           4 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     544           4 :         struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
     545           4 :         uint64_t max_write_zeroes_size = req->qpair->ctrlr->subsys->max_write_zeroes_size_kib;
     546             :         uint64_t start_lba;
     547             :         uint64_t num_blocks;
     548             :         int rc;
     549             : 
     550           4 :         nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks);
     551           4 :         if (spdk_unlikely(max_write_zeroes_size > 0 &&
     552             :                           num_blocks > (max_write_zeroes_size << 10) / spdk_bdev_desc_get_block_size(desc))) {
     553           1 :                 SPDK_ERRLOG("invalid write zeroes size, should not exceed %" PRIu64 "Kib\n", max_write_zeroes_size);
     554           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     555           1 :                 rsp->status.sc = SPDK_NVME_SC_INVALID_FIELD;
     556           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     557             :         }
     558             : 
     559           3 :         if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) {
     560           1 :                 SPDK_ERRLOG("end of media\n");
     561           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     562           1 :                 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE;
     563           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     564             :         }
     565             : 
     566           2 :         if (spdk_unlikely(cmd->cdw12_bits.write_zeroes.deac)) {
     567           0 :                 SPDK_ERRLOG("Write Zeroes Deallocate is not supported\n");
     568           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     569           0 :                 rsp->status.sc = SPDK_NVME_SC_INVALID_FIELD;
     570           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     571             :         }
     572             : 
     573           4 :         rc = spdk_bdev_write_zeroes_blocks(desc, ch, start_lba, num_blocks,
     574           2 :                                            nvmf_bdev_ctrlr_complete_cmd, req);
     575           2 :         if (spdk_unlikely(rc)) {
     576           1 :                 if (rc == -ENOMEM) {
     577           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     578           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     579             :                 }
     580           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
     581           1 :                 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     582           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     583             :         }
     584             : 
     585           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     586           4 : }
     587             : 
     588             : int
     589           3 : nvmf_bdev_ctrlr_flush_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     590             :                           struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     591             : {
     592           3 :         struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl;
     593             :         int rc;
     594             : 
     595             :         /* As for NVMeoF controller, SPDK always set volatile write
     596             :          * cache bit to 1, return success for those block devices
     597             :          * which can't support FLUSH command.
     598             :          */
     599           3 :         if (!spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_FLUSH)) {
     600           1 :                 response->status.sct = SPDK_NVME_SCT_GENERIC;
     601           1 :                 response->status.sc = SPDK_NVME_SC_SUCCESS;
     602           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     603             :         }
     604             : 
     605           4 :         rc = spdk_bdev_flush_blocks(desc, ch, 0, spdk_bdev_get_num_blocks(bdev),
     606           2 :                                     nvmf_bdev_ctrlr_complete_cmd, req);
     607           2 :         if (spdk_unlikely(rc)) {
     608           1 :                 if (rc == -ENOMEM) {
     609           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     610           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     611             :                 }
     612           1 :                 response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     613           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     614             :         }
     615           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     616           3 : }
     617             : 
     618             : struct nvmf_bdev_ctrlr_unmap {
     619             :         struct spdk_nvmf_request        *req;
     620             :         uint32_t                        count;
     621             :         struct spdk_bdev_desc           *desc;
     622             :         struct spdk_bdev                *bdev;
     623             :         struct spdk_io_channel          *ch;
     624             :         uint32_t                        range_index;
     625             : };
     626             : 
     627             : static void
     628           0 : nvmf_bdev_ctrlr_unmap_cpl(struct spdk_bdev_io *bdev_io, bool success,
     629             :                           void *cb_arg)
     630             : {
     631           0 :         struct nvmf_bdev_ctrlr_unmap *unmap_ctx = cb_arg;
     632           0 :         struct spdk_nvmf_request        *req = unmap_ctx->req;
     633           0 :         struct spdk_nvme_cpl            *response = &req->rsp->nvme_cpl;
     634             :         int                             sc, sct;
     635             :         uint32_t                        cdw0;
     636             : 
     637           0 :         unmap_ctx->count--;
     638             : 
     639           0 :         if (response->status.sct == SPDK_NVME_SCT_GENERIC &&
     640           0 :             response->status.sc == SPDK_NVME_SC_SUCCESS) {
     641           0 :                 spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &sct, &sc);
     642           0 :                 response->cdw0 = cdw0;
     643           0 :                 response->status.sc = sc;
     644           0 :                 response->status.sct = sct;
     645           0 :         }
     646             : 
     647           0 :         if (unmap_ctx->count == 0) {
     648           0 :                 spdk_nvmf_request_complete(req);
     649           0 :                 free(unmap_ctx);
     650           0 :         }
     651           0 :         spdk_bdev_free_io(bdev_io);
     652           0 : }
     653             : 
     654             : static int nvmf_bdev_ctrlr_unmap(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     655             :                                  struct spdk_io_channel *ch, struct spdk_nvmf_request *req,
     656             :                                  struct nvmf_bdev_ctrlr_unmap *unmap_ctx);
     657             : static void
     658           0 : nvmf_bdev_ctrlr_unmap_resubmit(void *arg)
     659             : {
     660           0 :         struct nvmf_bdev_ctrlr_unmap *unmap_ctx = arg;
     661           0 :         struct spdk_nvmf_request *req = unmap_ctx->req;
     662           0 :         struct spdk_bdev_desc *desc = unmap_ctx->desc;
     663           0 :         struct spdk_bdev *bdev = unmap_ctx->bdev;
     664           0 :         struct spdk_io_channel *ch = unmap_ctx->ch;
     665             : 
     666           0 :         nvmf_bdev_ctrlr_unmap(bdev, desc, ch, req, unmap_ctx);
     667           0 : }
     668             : 
     669             : static int
     670           0 : nvmf_bdev_ctrlr_unmap(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     671             :                       struct spdk_io_channel *ch, struct spdk_nvmf_request *req,
     672             :                       struct nvmf_bdev_ctrlr_unmap *unmap_ctx)
     673             : {
     674             :         uint16_t nr, i;
     675           0 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     676           0 :         struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl;
     677           0 :         uint64_t max_discard_size = req->qpair->ctrlr->subsys->max_discard_size_kib;
     678           0 :         uint32_t block_size = spdk_bdev_desc_get_block_size(desc);
     679             :         struct spdk_iov_xfer ix;
     680             :         uint64_t lba;
     681             :         uint32_t lba_count;
     682             :         int rc;
     683             : 
     684           0 :         nr = cmd->cdw10_bits.dsm.nr + 1;
     685           0 :         if (nr * sizeof(struct spdk_nvme_dsm_range) > req->length) {
     686           0 :                 SPDK_ERRLOG("Dataset Management number of ranges > SGL length\n");
     687           0 :                 response->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
     688           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     689             :         }
     690             : 
     691           0 :         if (unmap_ctx == NULL) {
     692           0 :                 unmap_ctx = calloc(1, sizeof(*unmap_ctx));
     693           0 :                 if (!unmap_ctx) {
     694           0 :                         response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     695           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     696             :                 }
     697             : 
     698           0 :                 unmap_ctx->req = req;
     699           0 :                 unmap_ctx->desc = desc;
     700           0 :                 unmap_ctx->ch = ch;
     701           0 :                 unmap_ctx->bdev = bdev;
     702             : 
     703           0 :                 response->status.sct = SPDK_NVME_SCT_GENERIC;
     704           0 :                 response->status.sc = SPDK_NVME_SC_SUCCESS;
     705           0 :         } else {
     706           0 :                 unmap_ctx->count--;  /* dequeued */
     707             :         }
     708             : 
     709           0 :         spdk_iov_xfer_init(&ix, req->iov, req->iovcnt);
     710             : 
     711           0 :         for (i = unmap_ctx->range_index; i < nr; i++) {
     712           0 :                 struct spdk_nvme_dsm_range dsm_range = { 0 };
     713             : 
     714           0 :                 spdk_iov_xfer_to_buf(&ix, &dsm_range, sizeof(dsm_range));
     715             : 
     716           0 :                 lba = dsm_range.starting_lba;
     717           0 :                 lba_count = dsm_range.length;
     718           0 :                 if (max_discard_size > 0 && lba_count > (max_discard_size << 10) / block_size) {
     719           0 :                         SPDK_ERRLOG("invalid unmap size %" PRIu32 " blocks, should not exceed %" PRIu64 " blocks\n",
     720             :                                     lba_count, max_discard_size << 1);
     721           0 :                         response->status.sct = SPDK_NVME_SCT_GENERIC;
     722           0 :                         response->status.sc = SPDK_NVME_SC_INVALID_FIELD;
     723           0 :                         break;
     724             :                 }
     725             : 
     726           0 :                 unmap_ctx->count++;
     727             : 
     728           0 :                 rc = spdk_bdev_unmap_blocks(desc, ch, lba, lba_count,
     729           0 :                                             nvmf_bdev_ctrlr_unmap_cpl, unmap_ctx);
     730           0 :                 if (rc) {
     731           0 :                         if (rc == -ENOMEM) {
     732           0 :                                 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_bdev_ctrlr_unmap_resubmit, unmap_ctx);
     733             :                                 /* Unmap was not yet submitted to bdev */
     734             :                                 /* unmap_ctx->count will be decremented when the request is dequeued */
     735           0 :                                 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     736             :                         }
     737           0 :                         response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     738           0 :                         unmap_ctx->count--;
     739             :                         /* We can't return here - we may have to wait for any other
     740             :                                 * unmaps already sent to complete */
     741           0 :                         break;
     742             :                 }
     743           0 :                 unmap_ctx->range_index++;
     744           0 :         }
     745             : 
     746           0 :         if (unmap_ctx->count == 0) {
     747           0 :                 free(unmap_ctx);
     748           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     749             :         }
     750             : 
     751           0 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     752           0 : }
     753             : 
     754             : int
     755           0 : nvmf_bdev_ctrlr_dsm_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     756             :                         struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     757             : {
     758           0 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     759           0 :         struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl;
     760             : 
     761           0 :         if (cmd->cdw11_bits.dsm.ad) {
     762           0 :                 return nvmf_bdev_ctrlr_unmap(bdev, desc, ch, req, NULL);
     763             :         }
     764             : 
     765           0 :         response->status.sct = SPDK_NVME_SCT_GENERIC;
     766           0 :         response->status.sc = SPDK_NVME_SC_SUCCESS;
     767           0 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     768           0 : }
     769             : 
     770             : int
     771           5 : nvmf_bdev_ctrlr_copy_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     772             :                          struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     773             : {
     774           5 :         struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
     775           5 :         struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl;
     776           5 :         uint64_t sdlba = ((uint64_t)cmd->cdw11 << 32) + cmd->cdw10;
     777           5 :         struct spdk_nvme_scc_source_range range = { 0 };
     778             :         struct spdk_iov_xfer ix;
     779             :         int rc;
     780             : 
     781           5 :         SPDK_DEBUGLOG(nvmf, "Copy command: SDLBA %lu, NR %u, desc format %u, PRINFOR %u, "
     782             :                       "DTYPE %u, STCW %u, PRINFOW %u, FUA %u, LR %u\n",
     783             :                       sdlba,
     784             :                       cmd->cdw12_bits.copy.nr,
     785             :                       cmd->cdw12_bits.copy.df,
     786             :                       cmd->cdw12_bits.copy.prinfor,
     787             :                       cmd->cdw12_bits.copy.dtype,
     788             :                       cmd->cdw12_bits.copy.stcw,
     789             :                       cmd->cdw12_bits.copy.prinfow,
     790             :                       cmd->cdw12_bits.copy.fua,
     791             :                       cmd->cdw12_bits.copy.lr);
     792             : 
     793           5 :         if (spdk_unlikely(req->length != (cmd->cdw12_bits.copy.nr + 1) *
     794             :                           sizeof(struct spdk_nvme_scc_source_range))) {
     795           0 :                 response->status.sct = SPDK_NVME_SCT_GENERIC;
     796           0 :                 response->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
     797           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     798             :         }
     799             : 
     800             :         /*
     801             :          * We support only one source range, and rely on this with the xfer
     802             :          * below.
     803             :          */
     804           5 :         if (cmd->cdw12_bits.copy.nr > 0) {
     805           1 :                 response->status.sct = SPDK_NVME_SCT_COMMAND_SPECIFIC;
     806           1 :                 response->status.sc = SPDK_NVME_SC_CMD_SIZE_LIMIT_SIZE_EXCEEDED;
     807           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     808             :         }
     809             : 
     810           4 :         if (cmd->cdw12_bits.copy.df != 0) {
     811           1 :                 response->status.sct = SPDK_NVME_SCT_GENERIC;
     812           1 :                 response->status.sc = SPDK_NVME_SC_INVALID_FIELD;
     813           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     814             :         }
     815             : 
     816           3 :         spdk_iov_xfer_init(&ix, req->iov, req->iovcnt);
     817           3 :         spdk_iov_xfer_to_buf(&ix, &range, sizeof(range));
     818             : 
     819           6 :         rc = spdk_bdev_copy_blocks(desc, ch, sdlba, range.slba, range.nlb + 1,
     820           3 :                                    nvmf_bdev_ctrlr_complete_cmd, req);
     821           3 :         if (spdk_unlikely(rc)) {
     822           1 :                 if (rc == -ENOMEM) {
     823           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     824           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     825             :                 }
     826             : 
     827           1 :                 response->status.sct = SPDK_NVME_SCT_GENERIC;
     828           1 :                 response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     829           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     830             :         }
     831             : 
     832           2 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     833           5 : }
     834             : 
     835             : int
     836           4 : nvmf_bdev_ctrlr_nvme_passthru_io(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     837             :                                  struct spdk_io_channel *ch, struct spdk_nvmf_request *req)
     838             : {
     839             :         int rc;
     840             : 
     841           8 :         rc = spdk_bdev_nvme_iov_passthru_md(desc, ch, &req->cmd->nvme_cmd, req->iov, req->iovcnt,
     842           4 :                                             req->length, NULL, 0, nvmf_bdev_ctrlr_complete_cmd, req);
     843             : 
     844           4 :         if (spdk_unlikely(rc)) {
     845           2 :                 if (rc == -ENOMEM) {
     846           1 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
     847           1 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     848             :                 }
     849           1 :                 req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
     850           1 :                 req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INVALID_OPCODE;
     851           1 :                 req->rsp->nvme_cpl.status.dnr = 1;
     852           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     853             :         }
     854             : 
     855           2 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     856           4 : }
     857             : 
     858             : int
     859           4 : spdk_nvmf_bdev_ctrlr_nvme_passthru_admin(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     860             :                 struct spdk_io_channel *ch, struct spdk_nvmf_request *req,
     861             :                 spdk_nvmf_nvme_passthru_cmd_cb cb_fn)
     862             : {
     863             :         int rc;
     864             : 
     865           4 :         if (spdk_unlikely(req->iovcnt > 1)) {
     866           0 :                 req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
     867           0 :                 req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     868           0 :                 req->rsp->nvme_cpl.status.dnr = 1;
     869           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     870             :         }
     871             : 
     872           4 :         req->cmd_cb_fn = cb_fn;
     873             : 
     874           8 :         rc = spdk_bdev_nvme_admin_passthru(desc, ch, &req->cmd->nvme_cmd, req->iov[0].iov_base, req->length,
     875           4 :                                            nvmf_bdev_ctrlr_complete_admin_cmd, req);
     876           4 :         if (spdk_unlikely(rc)) {
     877           2 :                 if (rc == -ENOMEM) {
     878           1 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_admin_cmd_resubmit, req);
     879           1 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     880             :                 }
     881           1 :                 req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC;
     882           1 :                 if (rc == -ENOTSUP) {
     883           1 :                         req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INVALID_OPCODE;
     884           1 :                 } else {
     885           0 :                         req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
     886             :                 }
     887             : 
     888           1 :                 req->rsp->nvme_cpl.status.dnr = 1;
     889           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     890             :         }
     891             : 
     892           2 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     893           4 : }
     894             : 
     895             : static void
     896           0 : nvmf_bdev_ctrlr_complete_abort_cmd(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg)
     897             : {
     898           0 :         struct spdk_nvmf_request *req = cb_arg;
     899             : 
     900           0 :         if (success) {
     901           0 :                 req->rsp->nvme_cpl.cdw0 &= ~1U;
     902           0 :         }
     903             : 
     904           0 :         spdk_nvmf_request_complete(req);
     905           0 :         spdk_bdev_free_io(bdev_io);
     906           0 : }
     907             : 
     908             : int
     909           0 : spdk_nvmf_bdev_ctrlr_abort_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
     910             :                                struct spdk_io_channel *ch, struct spdk_nvmf_request *req,
     911             :                                struct spdk_nvmf_request *req_to_abort)
     912             : {
     913             :         int rc;
     914             : 
     915           0 :         assert((req->rsp->nvme_cpl.cdw0 & 1U) != 0);
     916             : 
     917           0 :         rc = spdk_bdev_abort(desc, ch, req_to_abort, nvmf_bdev_ctrlr_complete_abort_cmd, req);
     918           0 :         if (spdk_likely(rc == 0)) {
     919           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     920           0 :         } else if (rc == -ENOMEM) {
     921           0 :                 nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_admin_cmd_resubmit, req);
     922           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
     923             :         } else {
     924           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
     925             :         }
     926           0 : }
     927             : 
     928             : bool
     929           2 : nvmf_bdev_ctrlr_get_dif_ctx(struct spdk_bdev_desc *desc, struct spdk_nvme_cmd *cmd,
     930             :                             struct spdk_dif_ctx *dif_ctx)
     931             : {
     932           2 :         uint32_t init_ref_tag, dif_check_flags = 0;
     933             :         int rc;
     934             :         struct spdk_dif_ctx_init_ext_opts dif_opts;
     935             : 
     936           2 :         if (spdk_bdev_desc_get_md_size(desc) == 0) {
     937           1 :                 return false;
     938             :         }
     939             : 
     940             :         /* Initial Reference Tag is the lower 32 bits of the start LBA. */
     941           1 :         init_ref_tag = (uint32_t)from_le64(&cmd->cdw10);
     942             : 
     943           1 :         if (spdk_bdev_desc_is_dif_check_enabled(desc, SPDK_DIF_CHECK_TYPE_REFTAG)) {
     944           0 :                 dif_check_flags |= SPDK_DIF_FLAGS_REFTAG_CHECK;
     945           0 :         }
     946             : 
     947           1 :         if (spdk_bdev_desc_is_dif_check_enabled(desc, SPDK_DIF_CHECK_TYPE_GUARD)) {
     948           0 :                 dif_check_flags |= SPDK_DIF_FLAGS_GUARD_CHECK;
     949           0 :         }
     950             : 
     951           1 :         dif_opts.size = SPDK_SIZEOF(&dif_opts, dif_pi_format);
     952           1 :         dif_opts.dif_pi_format = SPDK_DIF_PI_FORMAT_16;
     953           2 :         rc = spdk_dif_ctx_init(dif_ctx,
     954           1 :                                spdk_bdev_desc_get_block_size(desc),
     955           1 :                                spdk_bdev_desc_get_md_size(desc),
     956           1 :                                spdk_bdev_desc_is_md_interleaved(desc),
     957           1 :                                spdk_bdev_desc_is_dif_head_of_md(desc),
     958           1 :                                spdk_bdev_desc_get_dif_type(desc),
     959           1 :                                dif_check_flags,
     960           1 :                                init_ref_tag, 0, 0, 0, 0, &dif_opts);
     961             : 
     962           1 :         return (rc == 0) ? true : false;
     963           2 : }
     964             : 
     965             : static void
     966           0 : nvmf_bdev_ctrlr_zcopy_start_complete(struct spdk_bdev_io *bdev_io, bool success,
     967             :                                      void *cb_arg)
     968             : {
     969           0 :         struct spdk_nvmf_request        *req = cb_arg;
     970             :         struct iovec *iov;
     971           0 :         int iovcnt = 0;
     972             : 
     973           0 :         if (spdk_unlikely(!success)) {
     974           0 :                 int                     sc = 0, sct = 0;
     975           0 :                 uint32_t                cdw0 = 0;
     976           0 :                 struct spdk_nvme_cpl    *response = &req->rsp->nvme_cpl;
     977           0 :                 spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &sct, &sc);
     978             : 
     979           0 :                 response->cdw0 = cdw0;
     980           0 :                 response->status.sc = sc;
     981           0 :                 response->status.sct = sct;
     982             : 
     983           0 :                 spdk_bdev_free_io(bdev_io);
     984           0 :                 spdk_nvmf_request_complete(req);
     985           0 :                 return;
     986             :         }
     987             : 
     988           0 :         spdk_bdev_io_get_iovec(bdev_io, &iov, &iovcnt);
     989             : 
     990           0 :         assert(iovcnt <= NVMF_REQ_MAX_BUFFERS);
     991           0 :         assert(iovcnt > 0);
     992             : 
     993           0 :         req->iovcnt = iovcnt;
     994             : 
     995           0 :         assert(req->iov == iov);
     996             : 
     997           0 :         req->zcopy_bdev_io = bdev_io; /* Preserve the bdev_io for the end zcopy */
     998             : 
     999           0 :         spdk_nvmf_request_complete(req);
    1000             :         /* Don't free the bdev_io here as it is needed for the END ZCOPY */
    1001           0 : }
    1002             : 
    1003             : int
    1004           3 : nvmf_bdev_ctrlr_zcopy_start(struct spdk_bdev *bdev,
    1005             :                             struct spdk_bdev_desc *desc,
    1006             :                             struct spdk_io_channel *ch,
    1007             :                             struct spdk_nvmf_request *req)
    1008             : {
    1009           3 :         struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
    1010           3 :         uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev);
    1011           3 :         uint32_t block_size = spdk_bdev_desc_get_block_size(desc);
    1012             :         uint64_t start_lba;
    1013             :         uint64_t num_blocks;
    1014             :         int rc;
    1015             : 
    1016           3 :         nvmf_bdev_ctrlr_get_rw_params(&req->cmd->nvme_cmd, &start_lba, &num_blocks);
    1017             : 
    1018           3 :         if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) {
    1019           1 :                 SPDK_ERRLOG("end of media\n");
    1020           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
    1021           1 :                 rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE;
    1022           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
    1023             :         }
    1024             : 
    1025           2 :         if (spdk_unlikely(num_blocks * block_size > req->length)) {
    1026           1 :                 SPDK_ERRLOG("Read NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n",
    1027             :                             num_blocks, block_size, req->length);
    1028           1 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
    1029           1 :                 rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID;
    1030           1 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
    1031             :         }
    1032             : 
    1033           1 :         bool populate = (req->cmd->nvme_cmd.opc == SPDK_NVME_OPC_READ) ? true : false;
    1034             : 
    1035           2 :         rc = spdk_bdev_zcopy_start(desc, ch, req->iov, req->iovcnt, start_lba,
    1036           1 :                                    num_blocks, populate, nvmf_bdev_ctrlr_zcopy_start_complete, req);
    1037           1 :         if (spdk_unlikely(rc != 0)) {
    1038           0 :                 if (rc == -ENOMEM) {
    1039           0 :                         nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req);
    1040           0 :                         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
    1041             :                 }
    1042           0 :                 rsp->status.sct = SPDK_NVME_SCT_GENERIC;
    1043           0 :                 rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR;
    1044           0 :                 return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
    1045             :         }
    1046             : 
    1047           1 :         return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS;
    1048           3 : }
    1049             : 
    1050             : static void
    1051           0 : nvmf_bdev_ctrlr_zcopy_end_complete(struct spdk_bdev_io *bdev_io, bool success,
    1052             :                                    void *cb_arg)
    1053             : {
    1054           0 :         struct spdk_nvmf_request        *req = cb_arg;
    1055             : 
    1056           0 :         if (spdk_unlikely(!success)) {
    1057           0 :                 int                     sc = 0, sct = 0;
    1058           0 :                 uint32_t                cdw0 = 0;
    1059           0 :                 struct spdk_nvme_cpl    *response = &req->rsp->nvme_cpl;
    1060           0 :                 spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &sct, &sc);
    1061             : 
    1062           0 :                 response->cdw0 = cdw0;
    1063           0 :                 response->status.sc = sc;
    1064           0 :                 response->status.sct = sct;
    1065           0 :         }
    1066             : 
    1067           0 :         spdk_bdev_free_io(bdev_io);
    1068           0 :         req->zcopy_bdev_io = NULL;
    1069           0 :         spdk_nvmf_request_complete(req);
    1070           0 : }
    1071             : 
    1072             : void
    1073           0 : nvmf_bdev_ctrlr_zcopy_end(struct spdk_nvmf_request *req, bool commit)
    1074             : {
    1075             :         int rc __attribute__((unused));
    1076             : 
    1077           0 :         rc = spdk_bdev_zcopy_end(req->zcopy_bdev_io, commit, nvmf_bdev_ctrlr_zcopy_end_complete, req);
    1078             : 
    1079             :         /* The only way spdk_bdev_zcopy_end() can fail is if we pass a bdev_io type that isn't ZCOPY */
    1080           0 :         assert(rc == 0);
    1081           0 : }

Generated by: LCOV version 1.15