diff options
Diffstat (limited to 'src/spdk/lib/nvmf/ctrlr_bdev.c')
| -rw-r--r-- | src/spdk/lib/nvmf/ctrlr_bdev.c | 761 |
1 files changed, 761 insertions, 0 deletions
diff --git a/src/spdk/lib/nvmf/ctrlr_bdev.c b/src/spdk/lib/nvmf/ctrlr_bdev.c new file mode 100644 index 000000000..13e0a4309 --- /dev/null +++ b/src/spdk/lib/nvmf/ctrlr_bdev.c @@ -0,0 +1,761 @@ +/*- + * BSD LICENSE + * + * Copyright (c) Intel Corporation. All rights reserved. + * Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "spdk/stdinc.h" + +#include "nvmf_internal.h" + +#include "spdk/bdev.h" +#include "spdk/endian.h" +#include "spdk/thread.h" +#include "spdk/likely.h" +#include "spdk/nvme.h" +#include "spdk/nvmf_cmd.h" +#include "spdk/nvmf_spec.h" +#include "spdk/trace.h" +#include "spdk/scsi_spec.h" +#include "spdk/string.h" +#include "spdk/util.h" + +#include "spdk_internal/log.h" + +static bool +nvmf_subsystem_bdev_io_type_supported(struct spdk_nvmf_subsystem *subsystem, + enum spdk_bdev_io_type io_type) +{ + struct spdk_nvmf_ns *ns; + + for (ns = spdk_nvmf_subsystem_get_first_ns(subsystem); ns != NULL; + ns = spdk_nvmf_subsystem_get_next_ns(subsystem, ns)) { + if (ns->bdev == NULL) { + continue; + } + + if (!spdk_bdev_io_type_supported(ns->bdev, io_type)) { + SPDK_DEBUGLOG(SPDK_LOG_NVMF, + "Subsystem %s namespace %u (%s) does not support io_type %d\n", + spdk_nvmf_subsystem_get_nqn(subsystem), + ns->opts.nsid, spdk_bdev_get_name(ns->bdev), (int)io_type); + return false; + } + } + + SPDK_DEBUGLOG(SPDK_LOG_NVMF, "All devices in Subsystem %s support io_type %d\n", + spdk_nvmf_subsystem_get_nqn(subsystem), (int)io_type); + return true; +} + +bool +nvmf_ctrlr_dsm_supported(struct spdk_nvmf_ctrlr *ctrlr) +{ + return nvmf_subsystem_bdev_io_type_supported(ctrlr->subsys, SPDK_BDEV_IO_TYPE_UNMAP); +} + +bool +nvmf_ctrlr_write_zeroes_supported(struct spdk_nvmf_ctrlr *ctrlr) +{ + return nvmf_subsystem_bdev_io_type_supported(ctrlr->subsys, SPDK_BDEV_IO_TYPE_WRITE_ZEROES); +} + +static void +nvmf_bdev_ctrlr_complete_cmd(struct spdk_bdev_io *bdev_io, bool success, + void *cb_arg) +{ + struct spdk_nvmf_request *req = cb_arg; + struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; + int first_sc = 0, first_sct = 0, second_sc = 0, second_sct = 0; + uint32_t cdw0 = 0; + struct spdk_nvmf_request *first_req = req->first_fused_req; + + if (spdk_unlikely(first_req != NULL)) { + /* fused commands - get status for both operations */ + struct spdk_nvme_cpl *fused_response = &first_req->rsp->nvme_cpl; + + spdk_bdev_io_get_nvme_fused_status(bdev_io, &cdw0, &second_sct, &second_sc, &first_sct, &first_sc); + fused_response->cdw0 = cdw0; + fused_response->status.sc = second_sc; + fused_response->status.sct = second_sct; + + /* first request should be completed */ + spdk_nvmf_request_complete(first_req); + req->first_fused_req = NULL; + } else { + spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &first_sct, &first_sc); + } + + response->cdw0 = cdw0; + response->status.sc = first_sc; + response->status.sct = first_sct; + + spdk_nvmf_request_complete(req); + spdk_bdev_free_io(bdev_io); +} + +static void +nvmf_bdev_ctrlr_complete_admin_cmd(struct spdk_bdev_io *bdev_io, bool success, + void *cb_arg) +{ + struct spdk_nvmf_request *req = cb_arg; + + if (req->cmd_cb_fn) { + req->cmd_cb_fn(req); + } + + nvmf_bdev_ctrlr_complete_cmd(bdev_io, success, req); +} + +void +nvmf_bdev_ctrlr_identify_ns(struct spdk_nvmf_ns *ns, struct spdk_nvme_ns_data *nsdata, + bool dif_insert_or_strip) +{ + struct spdk_bdev *bdev = ns->bdev; + uint64_t num_blocks; + + num_blocks = spdk_bdev_get_num_blocks(bdev); + + nsdata->nsze = num_blocks; + nsdata->ncap = num_blocks; + nsdata->nuse = num_blocks; + nsdata->nlbaf = 0; + nsdata->flbas.format = 0; + nsdata->nacwu = spdk_bdev_get_acwu(bdev); + if (!dif_insert_or_strip) { + nsdata->lbaf[0].ms = spdk_bdev_get_md_size(bdev); + nsdata->lbaf[0].lbads = spdk_u32log2(spdk_bdev_get_block_size(bdev)); + if (nsdata->lbaf[0].ms != 0) { + nsdata->flbas.extended = 1; + nsdata->mc.extended = 1; + nsdata->mc.pointer = 0; + nsdata->dps.md_start = spdk_bdev_is_dif_head_of_md(bdev); + + switch (spdk_bdev_get_dif_type(bdev)) { + case SPDK_DIF_TYPE1: + nsdata->dpc.pit1 = 1; + nsdata->dps.pit = SPDK_NVME_FMT_NVM_PROTECTION_TYPE1; + break; + case SPDK_DIF_TYPE2: + nsdata->dpc.pit2 = 1; + nsdata->dps.pit = SPDK_NVME_FMT_NVM_PROTECTION_TYPE2; + break; + case SPDK_DIF_TYPE3: + nsdata->dpc.pit3 = 1; + nsdata->dps.pit = SPDK_NVME_FMT_NVM_PROTECTION_TYPE3; + break; + default: + SPDK_DEBUGLOG(SPDK_LOG_NVMF, "Protection Disabled\n"); + nsdata->dps.pit = SPDK_NVME_FMT_NVM_PROTECTION_DISABLE; + break; + } + } + } else { + nsdata->lbaf[0].ms = 0; + nsdata->lbaf[0].lbads = spdk_u32log2(spdk_bdev_get_data_block_size(bdev)); + } + nsdata->noiob = spdk_bdev_get_optimal_io_boundary(bdev); + nsdata->nmic.can_share = 1; + if (ns->ptpl_file != NULL) { + nsdata->nsrescap.rescap.persist = 1; + } + nsdata->nsrescap.rescap.write_exclusive = 1; + nsdata->nsrescap.rescap.exclusive_access = 1; + nsdata->nsrescap.rescap.write_exclusive_reg_only = 1; + nsdata->nsrescap.rescap.exclusive_access_reg_only = 1; + nsdata->nsrescap.rescap.write_exclusive_all_reg = 1; + nsdata->nsrescap.rescap.exclusive_access_all_reg = 1; + nsdata->nsrescap.rescap.ignore_existing_key = 1; + + SPDK_STATIC_ASSERT(sizeof(nsdata->nguid) == sizeof(ns->opts.nguid), "size mismatch"); + memcpy(nsdata->nguid, ns->opts.nguid, sizeof(nsdata->nguid)); + + SPDK_STATIC_ASSERT(sizeof(nsdata->eui64) == sizeof(ns->opts.eui64), "size mismatch"); + memcpy(&nsdata->eui64, ns->opts.eui64, sizeof(nsdata->eui64)); +} + +static void +nvmf_bdev_ctrlr_get_rw_params(const struct spdk_nvme_cmd *cmd, uint64_t *start_lba, + uint64_t *num_blocks) +{ + /* SLBA: CDW10 and CDW11 */ + *start_lba = from_le64(&cmd->cdw10); + + /* NLB: CDW12 bits 15:00, 0's based */ + *num_blocks = (from_le32(&cmd->cdw12) & 0xFFFFu) + 1; +} + +static bool +nvmf_bdev_ctrlr_lba_in_range(uint64_t bdev_num_blocks, uint64_t io_start_lba, + uint64_t io_num_blocks) +{ + if (io_start_lba + io_num_blocks > bdev_num_blocks || + io_start_lba + io_num_blocks < io_start_lba) { + return false; + } + + return true; +} + +static void +nvmf_ctrlr_process_io_cmd_resubmit(void *arg) +{ + struct spdk_nvmf_request *req = arg; + + nvmf_ctrlr_process_io_cmd(req); +} + +static void +nvmf_ctrlr_process_admin_cmd_resubmit(void *arg) +{ + struct spdk_nvmf_request *req = arg; + + nvmf_ctrlr_process_admin_cmd(req); +} + +static void +nvmf_bdev_ctrl_queue_io(struct spdk_nvmf_request *req, struct spdk_bdev *bdev, + struct spdk_io_channel *ch, spdk_bdev_io_wait_cb cb_fn, void *cb_arg) +{ + int rc; + + req->bdev_io_wait.bdev = bdev; + req->bdev_io_wait.cb_fn = cb_fn; + req->bdev_io_wait.cb_arg = cb_arg; + + rc = spdk_bdev_queue_io_wait(bdev, ch, &req->bdev_io_wait); + if (rc != 0) { + assert(false); + } + req->qpair->group->stat.pending_bdev_io++; +} + +int +nvmf_bdev_ctrlr_read_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, + struct spdk_io_channel *ch, struct spdk_nvmf_request *req) +{ + uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev); + uint32_t block_size = spdk_bdev_get_block_size(bdev); + struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; + struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl; + uint64_t start_lba; + uint64_t num_blocks; + int rc; + + nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks); + + if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) { + SPDK_ERRLOG("end of media\n"); + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + if (spdk_unlikely(num_blocks * block_size > req->length)) { + SPDK_ERRLOG("Read NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n", + num_blocks, block_size, req->length); + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + rc = spdk_bdev_readv_blocks(desc, ch, req->iov, req->iovcnt, start_lba, num_blocks, + nvmf_bdev_ctrlr_complete_cmd, req); + if (spdk_unlikely(rc)) { + if (rc == -ENOMEM) { + nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; + } + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; +} + +int +nvmf_bdev_ctrlr_write_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, + struct spdk_io_channel *ch, struct spdk_nvmf_request *req) +{ + uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev); + uint32_t block_size = spdk_bdev_get_block_size(bdev); + struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; + struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl; + uint64_t start_lba; + uint64_t num_blocks; + int rc; + + nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks); + + if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) { + SPDK_ERRLOG("end of media\n"); + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + if (spdk_unlikely(num_blocks * block_size > req->length)) { + SPDK_ERRLOG("Write NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n", + num_blocks, block_size, req->length); + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + rc = spdk_bdev_writev_blocks(desc, ch, req->iov, req->iovcnt, start_lba, num_blocks, + nvmf_bdev_ctrlr_complete_cmd, req); + if (spdk_unlikely(rc)) { + if (rc == -ENOMEM) { + nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; + } + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; +} + +int +nvmf_bdev_ctrlr_compare_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, + struct spdk_io_channel *ch, struct spdk_nvmf_request *req) +{ + uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev); + uint32_t block_size = spdk_bdev_get_block_size(bdev); + struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; + struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl; + uint64_t start_lba; + uint64_t num_blocks; + int rc; + + nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks); + + if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) { + SPDK_ERRLOG("end of media\n"); + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + if (spdk_unlikely(num_blocks * block_size > req->length)) { + SPDK_ERRLOG("Compare NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n", + num_blocks, block_size, req->length); + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + rc = spdk_bdev_comparev_blocks(desc, ch, req->iov, req->iovcnt, start_lba, num_blocks, + nvmf_bdev_ctrlr_complete_cmd, req); + if (spdk_unlikely(rc)) { + if (rc == -ENOMEM) { + nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; + } + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; +} + +int +nvmf_bdev_ctrlr_compare_and_write_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, + struct spdk_io_channel *ch, struct spdk_nvmf_request *cmp_req, struct spdk_nvmf_request *write_req) +{ + uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev); + uint32_t block_size = spdk_bdev_get_block_size(bdev); + struct spdk_nvme_cmd *cmp_cmd = &cmp_req->cmd->nvme_cmd; + struct spdk_nvme_cmd *write_cmd = &write_req->cmd->nvme_cmd; + struct spdk_nvme_cpl *rsp = &write_req->rsp->nvme_cpl; + uint64_t write_start_lba, cmp_start_lba; + uint64_t write_num_blocks, cmp_num_blocks; + int rc; + + nvmf_bdev_ctrlr_get_rw_params(cmp_cmd, &cmp_start_lba, &cmp_num_blocks); + nvmf_bdev_ctrlr_get_rw_params(write_cmd, &write_start_lba, &write_num_blocks); + + if (spdk_unlikely(write_start_lba != cmp_start_lba || write_num_blocks != cmp_num_blocks)) { + SPDK_ERRLOG("Fused command start lba / num blocks mismatch\n"); + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_INVALID_FIELD; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, write_start_lba, + write_num_blocks))) { + SPDK_ERRLOG("end of media\n"); + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + if (spdk_unlikely(write_num_blocks * block_size > write_req->length)) { + SPDK_ERRLOG("Write NLB %" PRIu64 " * block size %" PRIu32 " > SGL length %" PRIu32 "\n", + write_num_blocks, block_size, write_req->length); + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + rc = spdk_bdev_comparev_and_writev_blocks(desc, ch, cmp_req->iov, cmp_req->iovcnt, write_req->iov, + write_req->iovcnt, write_start_lba, write_num_blocks, nvmf_bdev_ctrlr_complete_cmd, write_req); + if (spdk_unlikely(rc)) { + if (rc == -ENOMEM) { + nvmf_bdev_ctrl_queue_io(cmp_req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, cmp_req); + nvmf_bdev_ctrl_queue_io(write_req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, write_req); + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; + } + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; +} + +int +nvmf_bdev_ctrlr_write_zeroes_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, + struct spdk_io_channel *ch, struct spdk_nvmf_request *req) +{ + uint64_t bdev_num_blocks = spdk_bdev_get_num_blocks(bdev); + struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; + struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl; + uint64_t start_lba; + uint64_t num_blocks; + int rc; + + nvmf_bdev_ctrlr_get_rw_params(cmd, &start_lba, &num_blocks); + + if (spdk_unlikely(!nvmf_bdev_ctrlr_lba_in_range(bdev_num_blocks, start_lba, num_blocks))) { + SPDK_ERRLOG("end of media\n"); + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_LBA_OUT_OF_RANGE; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + rc = spdk_bdev_write_zeroes_blocks(desc, ch, start_lba, num_blocks, + nvmf_bdev_ctrlr_complete_cmd, req); + if (spdk_unlikely(rc)) { + if (rc == -ENOMEM) { + nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; + } + rsp->status.sct = SPDK_NVME_SCT_GENERIC; + rsp->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; +} + +int +nvmf_bdev_ctrlr_flush_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, + struct spdk_io_channel *ch, struct spdk_nvmf_request *req) +{ + struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; + int rc; + + /* As for NVMeoF controller, SPDK always set volatile write + * cache bit to 1, return success for those block devices + * which can't support FLUSH command. + */ + if (!spdk_bdev_io_type_supported(bdev, SPDK_BDEV_IO_TYPE_FLUSH)) { + response->status.sct = SPDK_NVME_SCT_GENERIC; + response->status.sc = SPDK_NVME_SC_SUCCESS; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + rc = spdk_bdev_flush_blocks(desc, ch, 0, spdk_bdev_get_num_blocks(bdev), + nvmf_bdev_ctrlr_complete_cmd, req); + if (spdk_unlikely(rc)) { + if (rc == -ENOMEM) { + nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; + } + response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; +} + +struct nvmf_bdev_ctrlr_unmap { + struct spdk_nvmf_request *req; + uint32_t count; + struct spdk_bdev_desc *desc; + struct spdk_bdev *bdev; + struct spdk_io_channel *ch; + uint32_t range_index; +}; + +static void +nvmf_bdev_ctrlr_unmap_cpl(struct spdk_bdev_io *bdev_io, bool success, + void *cb_arg) +{ + struct nvmf_bdev_ctrlr_unmap *unmap_ctx = cb_arg; + struct spdk_nvmf_request *req = unmap_ctx->req; + struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; + int sc, sct; + uint32_t cdw0; + + unmap_ctx->count--; + + if (response->status.sct == SPDK_NVME_SCT_GENERIC && + response->status.sc == SPDK_NVME_SC_SUCCESS) { + spdk_bdev_io_get_nvme_status(bdev_io, &cdw0, &sct, &sc); + response->cdw0 = cdw0; + response->status.sc = sc; + response->status.sct = sct; + } + + if (unmap_ctx->count == 0) { + spdk_nvmf_request_complete(req); + free(unmap_ctx); + } + spdk_bdev_free_io(bdev_io); +} + +static int +nvmf_bdev_ctrlr_unmap(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, + struct spdk_io_channel *ch, struct spdk_nvmf_request *req, + struct nvmf_bdev_ctrlr_unmap *unmap_ctx); +static void +nvmf_bdev_ctrlr_unmap_resubmit(void *arg) +{ + struct nvmf_bdev_ctrlr_unmap *unmap_ctx = arg; + struct spdk_nvmf_request *req = unmap_ctx->req; + struct spdk_bdev_desc *desc = unmap_ctx->desc; + struct spdk_bdev *bdev = unmap_ctx->bdev; + struct spdk_io_channel *ch = unmap_ctx->ch; + + nvmf_bdev_ctrlr_unmap(bdev, desc, ch, req, unmap_ctx); +} + +static int +nvmf_bdev_ctrlr_unmap(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, + struct spdk_io_channel *ch, struct spdk_nvmf_request *req, + struct nvmf_bdev_ctrlr_unmap *unmap_ctx) +{ + uint16_t nr, i; + struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; + struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; + struct spdk_nvme_dsm_range *dsm_range; + uint64_t lba; + uint32_t lba_count; + int rc; + + nr = cmd->cdw10_bits.dsm.nr + 1; + if (nr * sizeof(struct spdk_nvme_dsm_range) > req->length) { + SPDK_ERRLOG("Dataset Management number of ranges > SGL length\n"); + response->status.sc = SPDK_NVME_SC_DATA_SGL_LENGTH_INVALID; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + if (unmap_ctx == NULL) { + unmap_ctx = calloc(1, sizeof(*unmap_ctx)); + if (!unmap_ctx) { + response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + unmap_ctx->req = req; + unmap_ctx->desc = desc; + unmap_ctx->ch = ch; + unmap_ctx->bdev = bdev; + + response->status.sct = SPDK_NVME_SCT_GENERIC; + response->status.sc = SPDK_NVME_SC_SUCCESS; + } else { + unmap_ctx->count--; /* dequeued */ + } + + dsm_range = (struct spdk_nvme_dsm_range *)req->data; + for (i = unmap_ctx->range_index; i < nr; i++) { + lba = dsm_range[i].starting_lba; + lba_count = dsm_range[i].length; + + unmap_ctx->count++; + + rc = spdk_bdev_unmap_blocks(desc, ch, lba, lba_count, + nvmf_bdev_ctrlr_unmap_cpl, unmap_ctx); + if (rc) { + if (rc == -ENOMEM) { + nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_bdev_ctrlr_unmap_resubmit, unmap_ctx); + /* Unmap was not yet submitted to bdev */ + /* unmap_ctx->count will be decremented when the request is dequeued */ + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; + } + response->status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; + unmap_ctx->count--; + /* We can't return here - we may have to wait for any other + * unmaps already sent to complete */ + break; + } + unmap_ctx->range_index++; + } + + if (unmap_ctx->count == 0) { + free(unmap_ctx); + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; +} + +int +nvmf_bdev_ctrlr_dsm_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, + struct spdk_io_channel *ch, struct spdk_nvmf_request *req) +{ + struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd; + struct spdk_nvme_cpl *response = &req->rsp->nvme_cpl; + + if (cmd->cdw11_bits.dsm.ad) { + return nvmf_bdev_ctrlr_unmap(bdev, desc, ch, req, NULL); + } + + response->status.sct = SPDK_NVME_SCT_GENERIC; + response->status.sc = SPDK_NVME_SC_SUCCESS; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; +} + +int +nvmf_bdev_ctrlr_nvme_passthru_io(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, + struct spdk_io_channel *ch, struct spdk_nvmf_request *req) +{ + int rc; + + rc = spdk_bdev_nvme_io_passthru(desc, ch, &req->cmd->nvme_cmd, req->data, req->length, + nvmf_bdev_ctrlr_complete_cmd, req); + if (spdk_unlikely(rc)) { + if (rc == -ENOMEM) { + nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_io_cmd_resubmit, req); + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; + } + req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC; + req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INVALID_OPCODE; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; +} + +int +spdk_nvmf_bdev_ctrlr_nvme_passthru_admin(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, + struct spdk_io_channel *ch, struct spdk_nvmf_request *req, + spdk_nvmf_nvme_passthru_cmd_cb cb_fn) +{ + int rc; + + req->cmd_cb_fn = cb_fn; + + rc = spdk_bdev_nvme_admin_passthru(desc, ch, &req->cmd->nvme_cmd, req->data, req->length, + nvmf_bdev_ctrlr_complete_admin_cmd, req); + if (spdk_unlikely(rc)) { + if (rc == -ENOMEM) { + nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_admin_cmd_resubmit, req); + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; + } + req->rsp->nvme_cpl.status.sct = SPDK_NVME_SCT_GENERIC; + req->rsp->nvme_cpl.status.sc = SPDK_NVME_SC_INTERNAL_DEVICE_ERROR; + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } + + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; +} + +static void +nvmf_bdev_ctrlr_complete_abort_cmd(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg) +{ + struct spdk_nvmf_request *req = cb_arg; + + if (success) { + req->rsp->nvme_cpl.cdw0 &= ~1U; + } + + spdk_nvmf_request_complete(req); + spdk_bdev_free_io(bdev_io); +} + +int +spdk_nvmf_bdev_ctrlr_abort_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc, + struct spdk_io_channel *ch, struct spdk_nvmf_request *req, + struct spdk_nvmf_request *req_to_abort) +{ + int rc; + + assert((req->rsp->nvme_cpl.cdw0 & 1U) != 0); + + rc = spdk_bdev_abort(desc, ch, req_to_abort, nvmf_bdev_ctrlr_complete_abort_cmd, req); + if (spdk_likely(rc == 0)) { + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; + } else if (rc == -ENOMEM) { + nvmf_bdev_ctrl_queue_io(req, bdev, ch, nvmf_ctrlr_process_admin_cmd_resubmit, req); + return SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS; + } else { + return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE; + } +} + +bool +nvmf_bdev_ctrlr_get_dif_ctx(struct spdk_bdev *bdev, struct spdk_nvme_cmd *cmd, + struct spdk_dif_ctx *dif_ctx) +{ + uint32_t init_ref_tag, dif_check_flags = 0; + int rc; + + if (spdk_bdev_get_md_size(bdev) == 0) { + return false; + } + + /* Initial Reference Tag is the lower 32 bits of the start LBA. */ + init_ref_tag = (uint32_t)from_le64(&cmd->cdw10); + + if (spdk_bdev_is_dif_check_enabled(bdev, SPDK_DIF_CHECK_TYPE_REFTAG)) { + dif_check_flags |= SPDK_DIF_FLAGS_REFTAG_CHECK; + } + + if (spdk_bdev_is_dif_check_enabled(bdev, SPDK_DIF_CHECK_TYPE_GUARD)) { + dif_check_flags |= SPDK_DIF_FLAGS_GUARD_CHECK; + } + + rc = spdk_dif_ctx_init(dif_ctx, + spdk_bdev_get_block_size(bdev), + spdk_bdev_get_md_size(bdev), + spdk_bdev_is_md_interleaved(bdev), + spdk_bdev_is_dif_head_of_md(bdev), + spdk_bdev_get_dif_type(bdev), + dif_check_flags, + init_ref_tag, 0, 0, 0, 0); + + return (rc == 0) ? true : false; +} |