diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-12 16:51:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-12 16:51:08 -0700 |
| commit | 141eaccd018ef0476e94b180026d973db35460fd (patch) | |
| tree | a1c8f5215bd4e5545dee6c56e8bb9b454c818b33 | |
| parent | 93094449060ae00213ba30ad9eaa485b448fe94b (diff) | |
| parent | b076808051f2c80d38e03fb2f1294f525c7a446d (diff) | |
| download | lwn-141eaccd018ef0476e94b180026d973db35460fd.tar.gz lwn-141eaccd018ef0476e94b180026d973db35460fd.zip | |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target updates from Nicholas Bellinger:
"Here are the target pending updates for v3.15-rc1. Apologies in
advance for waiting until the second to last day of the merge window
to send these out.
The highlights this round include:
- iser-target support for T10 PI (DIF) offloads (Sagi + Or)
- Fix Task Aborted Status (TAS) handling in target-core (Alex Leung)
- Pass in transport supported PI at session initialization (Sagi + MKP + nab)
- Add WRITE_INSERT + READ_STRIP T10 PI support in target-core (nab + Sagi)
- Fix iscsi-target ERL=2 ASYNC_EVENT connection pointer bug (nab)
- Fix tcm_fc use-after-free of ft_tpg (Andy Grover)
- Use correct ib_sg_dma primitives in ib_isert (Mike Marciniszyn)
Also, note the virtio-scsi + vhost-scsi changes to expose T10 PI
metadata into KVM guest have been left-out for now, as there where a
few comments from MST + Paolo that where not able to be addressed in
time for v3.15. Please expect this feature for v3.16-rc1"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (43 commits)
ib_srpt: Use correct ib_sg_dma primitives
target/tcm_fc: Rename ft_tport_create to ft_tport_get
target/tcm_fc: Rename ft_{add,del}_lport to {add,del}_wwn
target/tcm_fc: Rename structs and list members for clarity
target/tcm_fc: Limit to 1 TPG per wwn
target/tcm_fc: Don't export ft_lport_list
target/tcm_fc: Fix use-after-free of ft_tpg
target: Add check to prevent Abort Task from aborting itself
target: Enable READ_STRIP emulation in target_complete_ok_work
target/sbc: Add sbc_dif_read_strip software emulation
target: Enable WRITE_INSERT emulation in target_execute_cmd
target/sbc: Add sbc_dif_generate software emulation
target/sbc: Only expose PI read_cap16 bits when supported by fabric
target/spc: Only expose PI mode page bits when supported by fabric
target/spc: Only expose PI inquiry bits when supported by fabric
target: Pass in transport supported PI at session initialization
target/iblock: Fix double bioset_integrity_free bug
Target/sbc: Initialize COMPARE_AND_WRITE write_sg scatterlist
target/rd: T10-Dif: RAM disk is allocating more space than required.
iscsi-target: Fix ERL=2 ASYNC_EVENT connection pointer bug
...
33 files changed, 1241 insertions, 437 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index 8ee228e9ab5a..c98fdb185931 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -51,6 +51,8 @@ isert_unreg_rdma(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn); static int isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd, struct isert_rdma_wr *wr); +static int +isert_put_response(struct iscsi_conn *conn, struct iscsi_cmd *cmd); static void isert_qp_event_callback(struct ib_event *e, void *context) @@ -87,7 +89,8 @@ isert_query_device(struct ib_device *ib_dev, struct ib_device_attr *devattr) } static int -isert_conn_setup_qp(struct isert_conn *isert_conn, struct rdma_cm_id *cma_id) +isert_conn_setup_qp(struct isert_conn *isert_conn, struct rdma_cm_id *cma_id, + u8 protection) { struct isert_device *device = isert_conn->conn_device; struct ib_qp_init_attr attr; @@ -119,6 +122,8 @@ isert_conn_setup_qp(struct isert_conn *isert_conn, struct rdma_cm_id *cma_id) attr.cap.max_recv_sge = 1; attr.sq_sig_type = IB_SIGNAL_REQ_WR; attr.qp_type = IB_QPT_RC; + if (protection) + attr.create_flags |= IB_QP_CREATE_SIGNATURE_EN; pr_debug("isert_conn_setup_qp cma_id->device: %p\n", cma_id->device); @@ -226,7 +231,8 @@ isert_create_device_ib_res(struct isert_device *device) return ret; /* asign function handlers */ - if (dev_attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS) { + if (dev_attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS && + dev_attr->device_cap_flags & IB_DEVICE_SIGNATURE_HANDOVER) { device->use_fastreg = 1; device->reg_rdma_mem = isert_reg_rdma; device->unreg_rdma_mem = isert_unreg_rdma; @@ -236,13 +242,18 @@ isert_create_device_ib_res(struct isert_device *device) device->unreg_rdma_mem = isert_unmap_cmd; } + /* Check signature cap */ + device->pi_capable = dev_attr->device_cap_flags & + IB_DEVICE_SIGNATURE_HANDOVER ? true : false; + device->cqs_used = min_t(int, num_online_cpus(), device->ib_device->num_comp_vectors); device->cqs_used = min(ISERT_MAX_CQ, device->cqs_used); pr_debug("Using %d CQs, device %s supports %d vectors support " - "Fast registration %d\n", + "Fast registration %d pi_capable %d\n", device->cqs_used, device->ib_device->name, - device->ib_device->num_comp_vectors, device->use_fastreg); + device->ib_device->num_comp_vectors, device->use_fastreg, + device->pi_capable); device->cq_desc = kzalloc(sizeof(struct isert_cq_desc) * device->cqs_used, GFP_KERNEL); if (!device->cq_desc) { @@ -395,6 +406,12 @@ isert_conn_free_fastreg_pool(struct isert_conn *isert_conn) list_del(&fr_desc->list); ib_free_fast_reg_page_list(fr_desc->data_frpl); ib_dereg_mr(fr_desc->data_mr); + if (fr_desc->pi_ctx) { + ib_free_fast_reg_page_list(fr_desc->pi_ctx->prot_frpl); + ib_dereg_mr(fr_desc->pi_ctx->prot_mr); + ib_destroy_mr(fr_desc->pi_ctx->sig_mr); + kfree(fr_desc->pi_ctx); + } kfree(fr_desc); ++i; } @@ -406,8 +423,10 @@ isert_conn_free_fastreg_pool(struct isert_conn *isert_conn) static int isert_create_fr_desc(struct ib_device *ib_device, struct ib_pd *pd, - struct fast_reg_descriptor *fr_desc) + struct fast_reg_descriptor *fr_desc, u8 protection) { + int ret; + fr_desc->data_frpl = ib_alloc_fast_reg_page_list(ib_device, ISCSI_ISER_SG_TABLESIZE); if (IS_ERR(fr_desc->data_frpl)) { @@ -420,27 +439,88 @@ isert_create_fr_desc(struct ib_device *ib_device, struct ib_pd *pd, if (IS_ERR(fr_desc->data_mr)) { pr_err("Failed to allocate data frmr err=%ld\n", PTR_ERR(fr_desc->data_mr)); - ib_free_fast_reg_page_list(fr_desc->data_frpl); - return PTR_ERR(fr_desc->data_mr); + ret = PTR_ERR(fr_desc->data_mr); + goto err_data_frpl; } pr_debug("Create fr_desc %p page_list %p\n", fr_desc, fr_desc->data_frpl->page_list); + fr_desc->ind |= ISERT_DATA_KEY_VALID; + + if (protection) { + struct ib_mr_init_attr mr_init_attr = {0}; + struct pi_context *pi_ctx; + + fr_desc->pi_ctx = kzalloc(sizeof(*fr_desc->pi_ctx), GFP_KERNEL); + if (!fr_desc->pi_ctx) { + pr_err("Failed to allocate pi context\n"); + ret = -ENOMEM; + goto err_data_mr; + } + pi_ctx = fr_desc->pi_ctx; + + pi_ctx->prot_frpl = ib_alloc_fast_reg_page_list(ib_device, + ISCSI_ISER_SG_TABLESIZE); + if (IS_ERR(pi_ctx->prot_frpl)) { + pr_err("Failed to allocate prot frpl err=%ld\n", + PTR_ERR(pi_ctx->prot_frpl)); + ret = PTR_ERR(pi_ctx->prot_frpl); + goto err_pi_ctx; + } - fr_desc->valid = true; + pi_ctx->prot_mr = ib_alloc_fast_reg_mr(pd, ISCSI_ISER_SG_TABLESIZE); + if (IS_ERR(pi_ctx->prot_mr)) { + pr_err("Failed to allocate prot frmr err=%ld\n", + PTR_ERR(pi_ctx->prot_mr)); + ret = PTR_ERR(pi_ctx->prot_mr); + goto err_prot_frpl; + } + fr_desc->ind |= ISERT_PROT_KEY_VALID; + + mr_init_attr.max_reg_descriptors = 2; + mr_init_attr.flags |= IB_MR_SIGNATURE_EN; + pi_ctx->sig_mr = ib_create_mr(pd, &mr_init_attr); + if (IS_ERR(pi_ctx->sig_mr)) { + pr_err("Failed to allocate signature enabled mr err=%ld\n", + PTR_ERR(pi_ctx->sig_mr)); + ret = PTR_ERR(pi_ctx->sig_mr); + goto err_prot_mr; + } + fr_desc->ind |= ISERT_SIG_KEY_VALID; + } + fr_desc->ind &= ~ISERT_PROTECTED; return 0; +err_prot_mr: + ib_dereg_mr(fr_desc->pi_ctx->prot_mr); +err_prot_frpl: + ib_free_fast_reg_page_list(fr_desc->pi_ctx->prot_frpl); +err_pi_ctx: + kfree(fr_desc->pi_ctx); +err_data_mr: + ib_dereg_mr(fr_desc->data_mr); +err_data_frpl: + ib_free_fast_reg_page_list(fr_desc->data_frpl); + + return ret; } static int -isert_conn_create_fastreg_pool(struct isert_conn *isert_conn) +isert_conn_create_fastreg_pool(struct isert_conn *isert_conn, u8 pi_support) { struct fast_reg_descriptor *fr_desc; struct isert_device *device = isert_conn->conn_device; - int i, ret; + struct se_session *se_sess = isert_conn->conn->sess->se_sess; + struct se_node_acl *se_nacl = se_sess->se_node_acl; + int i, ret, tag_num; + /* + * Setup the number of FRMRs based upon the number of tags + * available to session in iscsi_target_locate_portal(). + */ + tag_num = max_t(u32, ISCSIT_MIN_TAGS, se_nacl->queue_depth); + tag_num = (tag_num * 2) + ISCSIT_EXTRA_TAGS; - INIT_LIST_HEAD(&isert_conn->conn_fr_pool); isert_conn->conn_fr_pool_size = 0; - for (i = 0; i < ISCSI_DEF_XMIT_CMDS_MAX; i++) { + for (i = 0; i < tag_num; i++) { fr_desc = kzalloc(sizeof(*fr_desc), GFP_KERNEL); if (!fr_desc) { pr_err("Failed to allocate fast_reg descriptor\n"); @@ -449,7 +529,8 @@ isert_conn_create_fastreg_pool(struct isert_conn *isert_conn) } ret = isert_create_fr_desc(device->ib_device, - isert_conn->conn_pd, fr_desc); + isert_conn->conn_pd, fr_desc, + pi_support); if (ret) { pr_err("Failed to create fastreg descriptor err=%d\n", ret); @@ -480,6 +561,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) struct isert_device *device; struct ib_device *ib_dev = cma_id->device; int ret = 0; + u8 pi_support = np->tpg_np->tpg->tpg_attrib.t10_pi; pr_debug("Entering isert_connect_request cma_id: %p, context: %p\n", cma_id, cma_id->context); @@ -498,6 +580,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) kref_get(&isert_conn->conn_kref); mutex_init(&isert_conn->conn_mutex); spin_lock_init(&isert_conn->conn_lock); + INIT_LIST_HEAD(&isert_conn->conn_fr_pool); cma_id->context = isert_conn; isert_conn->conn_cm_id = cma_id; @@ -569,16 +652,13 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) goto out_mr; } - if (device->use_fastreg) { - ret = isert_conn_create_fastreg_pool(isert_conn); - if (ret) { - pr_err("Conn: %p failed to create fastreg pool\n", - isert_conn); - goto out_fastreg; - } + if (pi_support && !device->pi_capable) { + pr_err("Protection information requested but not supported\n"); + ret = -EINVAL; + goto out_mr; } - ret = isert_conn_setup_qp(isert_conn, cma_id); + ret = isert_conn_setup_qp(isert_conn, cma_id, pi_support); if (ret) goto out_conn_dev; @@ -591,9 +671,6 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) return 0; out_conn_dev: - if (device->use_fastreg) - isert_conn_free_fastreg_pool(isert_conn); -out_fastreg: ib_dereg_mr(isert_conn->conn_mr); out_mr: ib_dealloc_pd(isert_conn->conn_pd); @@ -967,6 +1044,18 @@ isert_put_login_tx(struct iscsi_conn *conn, struct iscsi_login *login, } if (!login->login_failed) { if (login->login_complete) { + if (isert_conn->conn_device->use_fastreg) { + u8 pi_support = login->np->tpg_np->tpg->tpg_attrib.t10_pi; + + ret = isert_conn_create_fastreg_pool(isert_conn, + pi_support); + if (ret) { + pr_err("Conn: %p failed to create" + " fastreg pool\n", isert_conn); + return ret; + } + } + ret = isert_alloc_rx_descriptors(isert_conn); if (ret) return ret; @@ -1392,19 +1481,60 @@ isert_rx_completion(struct iser_rx_desc *desc, struct isert_conn *isert_conn, } } +static int +isert_map_data_buf(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd, + struct scatterlist *sg, u32 nents, u32 length, u32 offset, + enum iser_ib_op_code op, struct isert_data_buf *data) +{ + struct ib_device *ib_dev = isert_conn->conn_cm_id->device; + + data->dma_dir = op == ISER_IB_RDMA_WRITE ? + DMA_TO_DEVICE : DMA_FROM_DEVICE; + + data->len = length - offset; + data->offset = offset; + data->sg_off = data->offset / PAGE_SIZE; + + data->sg = &sg[data->sg_off]; + data->nents = min_t(unsigned int, nents - data->sg_off, + ISCSI_ISER_SG_TABLESIZE); + data->len = min_t(unsigned int, data->len, ISCSI_ISER_SG_TABLESIZE * + PAGE_SIZE); + + data->dma_nents = ib_dma_map_sg(ib_dev, data->sg, data->nents, + data->dma_dir); + if (unlikely(!data->dma_nents)) { + pr_err("Cmd: unable to dma map SGs %p\n", sg); + return -EINVAL; + } + + pr_debug("Mapped cmd: %p count: %u sg: %p sg_nents: %u rdma_len %d\n", + isert_cmd, data->dma_nents, data->sg, data->nents, data->len); + + return 0; +} + +static void +isert_unmap_data_buf(struct isert_conn *isert_conn, struct isert_data_buf *data) +{ + struct ib_device *ib_dev = isert_conn->conn_cm_id->device; + + ib_dma_unmap_sg(ib_dev, data->sg, data->nents, data->dma_dir); + memset(data, 0, sizeof(*data)); +} + + + static void isert_unmap_cmd(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn) { struct isert_rdma_wr *wr = &isert_cmd->rdma_wr; - struct ib_device *ib_dev = isert_conn->conn_cm_id->device; pr_debug("isert_unmap_cmd: %p\n", isert_cmd); - if (wr->sge) { + + if (wr->data.sg) { pr_debug("isert_unmap_cmd: %p unmap_sg op\n", isert_cmd); - ib_dma_unmap_sg(ib_dev, wr->sge, wr->num_sge, - (wr->iser_ib_op == ISER_IB_RDMA_WRITE) ? - DMA_TO_DEVICE : DMA_FROM_DEVICE); - wr->sge = NULL; + isert_unmap_data_buf(isert_conn, &wr->data); } if (wr->send_wr) { @@ -1424,7 +1554,6 @@ static void isert_unreg_rdma(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn) { struct isert_rdma_wr *wr = &isert_cmd->rdma_wr; - struct ib_device *ib_dev = isert_conn->conn_cm_id->device; LIST_HEAD(unmap_list); pr_debug("unreg_fastreg_cmd: %p\n", isert_cmd); @@ -1432,18 +1561,19 @@ isert_unreg_rdma(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn) if (wr->fr_desc) { pr_debug("unreg_fastreg_cmd: %p free fr_desc %p\n", isert_cmd, wr->fr_desc); + if (wr->fr_desc->ind & ISERT_PROTECTED) { + isert_unmap_data_buf(isert_conn, &wr->prot); + wr->fr_desc->ind &= ~ISERT_PROTECTED; + } spin_lock_bh(&isert_conn->conn_lock); list_add_tail(&wr->fr_desc->list, &isert_conn->conn_fr_pool); spin_unlock_bh(&isert_conn->conn_lock); wr->fr_desc = NULL; } - if (wr->sge) { + if (wr->data.sg) { pr_debug("unreg_fastreg_cmd: %p unmap_sg op\n", isert_cmd); - ib_dma_unmap_sg(ib_dev, wr->sge, wr->num_sge, - (wr->iser_ib_op == ISER_IB_RDMA_WRITE) ? - DMA_TO_DEVICE : DMA_FROM_DEVICE); - wr->sge = NULL; + isert_unmap_data_buf(isert_conn, &wr->data); } wr->ib_sge = NULL; @@ -1451,7 +1581,7 @@ isert_unreg_rdma(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn) } static void -isert_put_cmd(struct isert_cmd *isert_cmd) +isert_put_cmd(struct isert_cmd *isert_cmd, bool comp_err) { struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd; struct isert_conn *isert_conn = isert_cmd->conn; @@ -1467,8 +1597,21 @@ isert_put_cmd(struct isert_cmd *isert_cmd) list_del_init(&cmd->i_conn_node); spin_unlock_bh(&conn->cmd_lock); - if (cmd->data_direction == DMA_TO_DEVICE) + if (cmd->data_direction == DMA_TO_DEVICE) { iscsit_stop_dataout_timer(cmd); + /* + * Check for special case during comp_err where + * WRITE_PENDING has been handed off from core, + * but requires an extra target_put_sess_cmd() + * before transport_generic_free_cmd() below. + */ + if (comp_err && + cmd->se_cmd.t_state == TRANSPORT_WRITE_PENDING) { + struct se_cmd *se_cmd = &cmd->se_cmd; + + target_put_sess_cmd(se_cmd->se_sess, se_cmd); + } + } device->unreg_rdma_mem(isert_cmd, isert_conn); transport_generic_free_cmd(&cmd->se_cmd, 0); @@ -1523,7 +1666,7 @@ isert_unmap_tx_desc(struct iser_tx_desc *tx_desc, struct ib_device *ib_dev) static void isert_completion_put(struct iser_tx_desc *tx_desc, struct isert_cmd *isert_cmd, - struct ib_device *ib_dev) + struct ib_device *ib_dev, bool comp_err) { if (isert_cmd->pdu_buf_dma != 0) { pr_debug("Calling ib_dma_unmap_single for isert_cmd->pdu_buf_dma\n"); @@ -1533,7 +1676,77 @@ isert_completion_put(struct iser_tx_desc *tx_desc, struct isert_cmd *isert_cmd, } isert_unmap_tx_desc(tx_desc, ib_dev); - isert_put_cmd(isert_cmd); + isert_put_cmd(isert_cmd, comp_err); +} + +static int +isert_check_pi_status(struct se_cmd *se_cmd, struct ib_mr *sig_mr) +{ + struct ib_mr_status mr_status; + int ret; + + ret = ib_check_mr_status(sig_mr, IB_MR_CHECK_SIG_STATUS, &mr_status); + if (ret) { + pr_err("ib_check_mr_status failed, ret %d\n", ret); + goto fail_mr_status; + } + + if (mr_status.fail_status & IB_MR_CHECK_SIG_STATUS) { + u64 sec_offset_err; + u32 block_size = se_cmd->se_dev->dev_attrib.block_size + 8; + + switch (mr_status.sig_err.err_type) { + case IB_SIG_BAD_GUARD: + se_cmd->pi_err = TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; + break; + case IB_SIG_BAD_REFTAG: + se_cmd->pi_err = TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; + break; + case IB_SIG_BAD_APPTAG: + se_cmd->pi_err = TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; + break; + } + sec_offset_err = mr_status.sig_err.sig_err_offset; + do_div(sec_offset_err, block_size); + se_cmd->bad_sector = sec_offset_err + se_cmd->t_task_lba; + + pr_err("isert: PI error found type %d at sector 0x%llx " + "expected 0x%x vs actual 0x%x\n", + mr_status.sig_err.err_type, + (unsigned long long)se_cmd->bad_sector, + mr_status.sig_err.expected, + mr_status.sig_err.actual); + ret = 1; + } + +fail_mr_status: + return ret; +} + +static void +isert_completion_rdma_write(struct iser_tx_desc *tx_desc, + struct isert_cmd *isert_cmd) +{ + struct isert_rdma_wr *wr = &isert_cmd->rdma_wr; + struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd; + struct se_cmd *se_cmd = &cmd->se_cmd; + struct isert_conn *isert_conn = isert_cmd->conn; + struct isert_device *device = isert_conn->conn_device; + int ret = 0; + + if (wr->fr_desc && wr->fr_desc->ind & ISERT_PROTECTED) { + ret = isert_check_pi_status(se_cmd, + wr->fr_desc->pi_ctx->sig_mr); + wr->fr_desc->ind &= ~ISERT_PROTECTED; + } + + device->unreg_rdma_mem(isert_cmd, isert_conn); + wr->send_wr_num = 0; + if (ret) + transport_send_check_condition_and_sense(se_cmd, + se_cmd->pi_err, 0); + else + isert_put_response(isert_conn->conn, cmd); } static void @@ -1545,10 +1758,17 @@ isert_completion_rdma_read(struct iser_tx_desc *tx_desc, struct se_cmd *se_cmd = &cmd->se_cmd; struct isert_conn *isert_conn = isert_cmd->conn; struct isert_device *device = isert_conn->conn_device; + int ret = 0; + + if (wr->fr_desc && wr->fr_desc->ind & ISERT_PROTECTED) { + ret = isert_check_pi_status(se_cmd, + wr->fr_desc->pi_ctx->sig_mr); + wr->fr_desc->ind &= ~ISERT_PROTECTED; + } iscsit_stop_dataout_timer(cmd); device->unreg_rdma_mem(isert_cmd, isert_conn); - cmd->write_data_done = wr->cur_rdma_length; + cmd->write_data_done = wr->data.len; wr->send_wr_num = 0; pr_debug("Cmd: %p RDMA_READ comp calling execute_cmd\n", isert_cmd); @@ -1557,7 +1777,11 @@ isert_completion_rdma_read(struct iser_tx_desc *tx_desc, cmd->i_state = ISTATE_RECEIVED_LAST_DATAOUT; spin_unlock_bh(&cmd->istate_lock); - target_execute_cmd(se_cmd); + if (ret) + transport_send_check_condition_and_sense(se_cmd, + se_cmd->pi_err, 0); + else + target_execute_cmd(se_cmd); } static void @@ -1577,14 +1801,14 @@ isert_do_control_comp(struct work_struct *work) iscsit_tmr_post_handler(cmd, cmd->conn); cmd->i_state = ISTATE_SENT_STATUS; - isert_completion_put(&isert_cmd->tx_desc, isert_cmd, ib_dev); + isert_completion_put(&isert_cmd->tx_desc, isert_cmd, ib_dev, false); break; case ISTATE_SEND_REJECT: pr_debug("Got isert_do_control_comp ISTATE_SEND_REJECT: >>>\n"); atomic_dec(&isert_conn->post_send_buf_count); cmd->i_state = ISTATE_SENT_STATUS; - isert_completion_put(&isert_cmd->tx_desc, isert_cmd, ib_dev); + isert_completion_put(&isert_cmd->tx_desc, isert_cmd, ib_dev, false); break; case ISTATE_SEND_LOGOUTRSP: pr_debug("Calling iscsit_logout_post_handler >>>>>>>>>>>>>>\n"); @@ -1598,7 +1822,7 @@ isert_do_control_comp(struct work_struct *work) case ISTATE_SEND_TEXTRSP: atomic_dec(&isert_conn->post_send_buf_count); cmd->i_state = ISTATE_SENT_STATUS; - isert_completion_put(&isert_cmd->tx_desc, isert_cmd, ib_dev); + isert_completion_put(&isert_cmd->tx_desc, isert_cmd, ib_dev, false); break; default: pr_err("Unknown do_control_comp i_state %d\n", cmd->i_state); @@ -1626,10 +1850,21 @@ isert_response_completion(struct iser_tx_desc *tx_desc, queue_work(isert_comp_wq, &isert_cmd->comp_work); return; } - atomic_sub(wr->send_wr_num + 1, &isert_conn->post_send_buf_count); + + /** + * If send_wr_num is 0 this means that we got + * RDMA completion and we cleared it and we should + * simply decrement the response post. else the + * response is incorporated in send_wr_num, just + * sub it. + **/ + if (wr->send_wr_num) + atomic_sub(wr->send_wr_num, &isert_conn->post_send_buf_count); + else + atomic_dec(&isert_conn->post_send_buf_count); cmd->i_state = ISTATE_SENT_STATUS; - isert_completion_put(tx_desc, isert_cmd, ib_dev); + isert_completion_put(tx_desc, isert_cmd, ib_dev, false); } static void @@ -1658,8 +1893,9 @@ __isert_send_completion(struct iser_tx_desc *tx_desc, isert_conn, ib_dev); break; case ISER_IB_RDMA_WRITE: - pr_err("isert_send_completion: Got ISER_IB_RDMA_WRITE\n"); - dump_stack(); + pr_debug("isert_send_completion: Got ISER_IB_RDMA_WRITE\n"); + atomic_sub(wr->send_wr_num, &isert_conn->post_send_buf_count); + isert_completion_rdma_write(tx_desc, isert_cmd); break; case ISER_IB_RDMA_READ: pr_debug("isert_send_completion: Got ISER_IB_RDMA_READ:\n"); @@ -1709,8 +1945,20 @@ isert_cq_drain_comp_llist(struct isert_conn *isert_conn, struct ib_device *ib_de llnode = llist_next(llnode); wr = &t->isert_cmd->rdma_wr; - atomic_sub(wr->send_wr_num + 1, &isert_conn->post_send_buf_count); - isert_completion_put(t, t->isert_cmd, ib_dev); + /** + * If send_wr_num is 0 this means that we got + * RDMA completion and we cleared it and we should + * simply decrement the response post. else the + * response is incorporated in send_wr_num, just + * sub it. + **/ + if (wr->send_wr_num) + atomic_sub(wr->send_wr_num, + &isert_conn->post_send_buf_count); + else + atomic_dec(&isert_conn->post_send_buf_count); + + isert_completion_put(t, t->isert_cmd, ib_dev, true); } } @@ -1728,15 +1976,27 @@ isert_cq_tx_comp_err(struct iser_tx_desc *tx_desc, struct isert_conn *isert_conn llnode = llist_next(llnode); wr = &t->isert_cmd->rdma_wr; - atomic_sub(wr->send_wr_num + 1, &isert_conn->post_send_buf_count); - isert_completion_put(t, t->isert_cmd, ib_dev); + /** + * If send_wr_num is 0 this means that we got + * RDMA completion and we cleared it and we should + * simply decrement the response post. else the + * response is incorporated in send_wr_num, just + * sub it. + **/ + if (wr->send_wr_num) + atomic_sub(wr->send_wr_num, + &isert_conn->post_send_buf_count); + else + atomic_dec(&isert_conn->post_send_buf_count); + + isert_completion_put(t, t->isert_cmd, ib_dev, true); } tx_desc->comp_llnode_batch = NULL; if (!isert_cmd) isert_unmap_tx_desc(tx_desc, ib_dev); else - isert_completion_put(tx_desc, isert_cmd, ib_dev); + isert_completion_put(tx_desc, isert_cmd, ib_dev, true); } static void @@ -1918,6 +2178,36 @@ isert_put_response(struct iscsi_conn *conn, struct iscsi_cmd *cmd) return isert_post_response(isert_conn, isert_cmd); } +static void +isert_aborted_task(struct iscsi_conn *conn, struct iscsi_cmd *cmd) +{ + struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd); + struct isert_conn *isert_conn = (struct isert_conn *)conn->context; + struct isert_device *device = isert_conn->conn_device; + + spin_lock_bh(&conn->cmd_lock); + if (!list_empty(&cmd->i_conn_node)) + list_del_init(&cmd->i_conn_node); + spin_unlock_bh(&conn->cmd_lock); + + if (cmd->data_direction == DMA_TO_DEVICE) + iscsit_stop_dataout_timer(cmd); + + device->unreg_rdma_mem(isert_cmd, isert_conn); +} + +static enum target_prot_op +isert_get_sup_prot_ops(struct iscsi_conn *conn) +{ + struct isert_conn *isert_conn = (struct isert_conn *)conn->context; + struct isert_device *device = isert_conn->conn_device; + + if (device->pi_capable) + return TARGET_PROT_ALL; + + return TARGET_PROT_NORMAL; +} + static int isert_put_nopin(struct iscsi_cmd *cmd, struct iscsi_conn *conn, bool nopout_response) @@ -2099,54 +2389,39 @@ isert_map_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd, struct se_cmd *se_cmd = &cmd->se_cmd; struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd); struct isert_conn *isert_conn = (struct isert_conn *)conn->context; - struct ib_device *ib_dev = isert_conn->conn_cm_id->device; + struct isert_data_buf *data = &wr->data; struct ib_send_wr *send_wr; struct ib_sge *ib_sge; - struct scatterlist *sg_start; - u32 sg_off = 0, sg_nents; - u32 offset = 0, data_len, data_left, rdma_write_max, va_offset = 0; - int ret = 0, count, i, ib_sge_cnt; + u32 offset, data_len, data_left, rdma_write_max, va_offset = 0; + int ret = 0, i, ib_sge_cnt; - if (wr->iser_ib_op == ISER_IB_RDMA_WRITE) { - data_left = se_cmd->data_length; - } else { - sg_off = cmd->write_data_done / PAGE_SIZE; - data_left = se_cmd->data_length - cmd->write_data_done; - offset = cmd->write_data_done; - isert_cmd->tx_desc.isert_cmd = isert_cmd; - } + isert_cmd->tx_desc.isert_cmd = isert_cmd; - sg_start = &cmd->se_cmd.t_data_sg[sg_off]; - sg_nents = se_cmd->t_data_nents - sg_off; + offset = wr->iser_ib_op == ISER_IB_RDMA_READ ? cmd->write_data_done : 0; + ret = isert_map_data_buf(isert_conn, isert_cmd, se_cmd->t_data_sg, + se_cmd->t_data_nents, se_cmd->data_length, + offset, wr->iser_ib_op, &wr->data); + if (ret) + return ret; - count = ib_dma_map_sg(ib_dev, sg_start, sg_nents, - (wr->iser_ib_op == ISER_IB_RDMA_WRITE) ? - DMA_TO_DEVICE : DMA_FROM_DEVICE); - if (unlikely(!count)) { - pr_err("Cmd: %p unrable to map SGs\n", isert_cmd); - return -EINVAL; - } - wr->sge = sg_start; - wr->num_sge = sg_nents; - wr->cur_rdma_length = data_left; - pr_debug("Mapped cmd: %p count: %u sg: %p sg_nents: %u rdma_len %d\n", - isert_cmd, count, sg_start, sg_nents, data_left); + data_left = data->len; + offset = data->offset; - ib_sge = kzalloc(sizeof(struct ib_sge) * sg_nents, GFP_KERNEL); + ib_sge = kzalloc(sizeof(struct ib_sge) * data->nents, GFP_KERNEL); if (!ib_sge) { pr_warn("Unable to allocate ib_sge\n"); ret = -ENOMEM; - goto unmap_sg; + goto unmap_cmd; } wr->ib_sge = ib_sge; - wr->send_wr_num = DIV_ROUND_UP(sg_nents, isert_conn->max_sge); + wr->send_wr_num = DIV_ROUND_UP(data->nents, isert_conn->max_sge); wr->send_wr = kzalloc(sizeof(struct ib_send_wr) * wr->send_wr_num, GFP_KERNEL); if (!wr->send_wr) { pr_debug("Unable to allocate wr->send_wr\n"); ret = -ENOMEM; - goto unmap_sg; + goto unmap_cmd; } wr->isert_cmd = isert_cmd; @@ -2185,10 +2460,9 @@ isert_map_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd, } return 0; -unmap_sg: - ib_dma_unmap_sg(ib_dev, sg_start, sg_nents, - (wr->iser_ib_op == ISER_IB_RDMA_WRITE) ? - DMA_TO_DEVICE : DMA_FROM_DEVICE); +unmap_cmd: + isert_unmap_data_buf(isert_conn, data); + return ret; } @@ -2232,49 +2506,70 @@ isert_map_fr_pagelist(struct ib_device *ib_dev, } static int -isert_fast_reg_mr(struct fast_reg_descriptor *fr_desc, - struct isert_conn *isert_conn, struct scatterlist *sg_start, - struct ib_sge *ib_sge, u32 sg_nents, u32 offset, - unsigned int data_len) +isert_fast_reg_mr(struct isert_conn *isert_conn, + struct fast_reg_descriptor *fr_desc, + struct isert_data_buf *mem, + enum isert_indicator ind, + struct ib_sge *sge) { struct ib_device *ib_dev = isert_conn->conn_cm_id->device; + struct ib_mr *mr; + struct ib_fast_reg_page_list *frpl; struct ib_send_wr fr_wr, inv_wr; struct ib_send_wr *bad_wr, *wr = NULL; int ret, pagelist_len; u32 page_off; u8 key; - sg_nents = min_t(unsigned int, sg_nents, ISCSI_ISER_SG_TABLESIZE); - page_off = offset % PAGE_SIZE; + if (mem->dma_nents == 1) { + sge->lkey = isert_conn->conn_mr->lkey; + sge->addr = ib_sg_dma_address(ib_dev, &mem->sg[0]); + sge->length = ib_sg_dma_len(ib_dev, &mem->sg[0]); + pr_debug("%s:%d sge: addr: 0x%llx length: %u lkey: %x\n", + __func__, __LINE__, sge->addr, sge->length, + sge->lkey); + return 0; + } + + if (ind == ISERT_DATA_KEY_VALID) { + /* Registering data buffer */ + mr = fr_desc->data_mr; + frpl = fr_desc->data_frpl; + } else { + /* Registering protection buffer */ + mr = fr_desc->pi_ctx->prot_mr; + frpl = fr_desc->pi_ctx->prot_frpl; + } + + page_off = mem->offset % PAGE_SIZE; pr_debug("Use fr_desc %p sg_nents %d offset %u\n", - fr_desc, sg_nents, offset); + fr_desc, mem->nents, mem->offset); - pagelist_len = isert_map_fr_pagelist(ib_dev, sg_start, sg_nents, - &fr_desc->data_frpl->page_list[0]); + pagelist_len = isert_map_fr_pagelist(ib_dev, mem->sg, mem->nents, + &frpl->page_list[0]); - if (!fr_desc->valid) { + if (!(fr_desc->ind & ISERT_DATA_KEY_VALID)) { memset(&inv_wr, 0, sizeof(inv_wr)); inv_wr.wr_id = ISER_FASTREG_LI_WRID; inv_wr.opcode = IB_WR_LOCAL_INV; - inv_wr.ex.invalidate_rkey = fr_desc->data_mr->rkey; + inv_wr.ex.invalidate_rkey = mr->rkey; wr = &inv_wr; /* Bump the key */ - key = (u8)(fr_desc->data_mr->rkey & 0x000000FF); - ib_update_fast_reg_key(fr_desc->data_mr, ++key); + key = (u8)(mr->rkey & 0x000000FF); + ib_update_fast_reg_key(mr, ++key); } /* Prepare FASTREG WR */ memset(&fr_wr, 0, sizeof(fr_wr)); fr_wr.wr_id = ISER_FASTREG_LI_WRID; fr_wr.opcode = IB_WR_FAST_REG_MR; - fr_wr.wr.fast_reg.iova_start = - fr_desc->data_frpl->page_list[0] + page_off; - fr_wr.wr.fast_reg.page_list = fr_desc->data_frpl; + fr_wr.wr.fast_reg.iova_start = frpl->page_list[0] + page_off; + fr_wr.wr.fast_reg.page_list = frpl; fr_wr.wr.fast_reg.page_list_len = pagelist_len; fr_wr.wr.fast_reg.page_shift = PAGE_SHIFT; - fr_wr.wr.fast_reg.length = data_len; - fr_wr.wr.fast_reg.rkey = fr_desc->data_mr->rkey; + fr_wr.wr.fast_reg.length = mem->len; + fr_wr.wr.fast_reg.rkey = mr->rkey; fr_wr.wr.fast_reg.access_flags = IB_ACCESS_LOCAL_WRITE; if (!wr) @@ -2287,15 +2582,157 @@ isert_fast_reg_mr(struct fast_reg_descriptor *fr_desc, pr_err("fast registration failed, ret:%d\n", ret); return ret; } - fr_desc->valid = false; + fr_desc->ind &= ~ind; + + sge->lkey = mr->lkey; + sge->addr = frpl->page_list[0] + page_off; + sge->length = mem->len; + + pr_debug("%s:%d sge: addr: 0x%llx length: %u lkey: %x\n", + __func__, __LINE__, sge->addr, sge->length, + sge->lkey); + + return ret; +} + +static inline enum ib_t10_dif_type +se2ib_prot_type(enum target_prot_type prot_type) +{ + switch (prot_type) { + case TARGET_DIF_TYPE0_PROT: + return IB_T10DIF_NONE; + case TARGET_DIF_TYPE1_PROT: + return IB_T10DIF_TYPE1; + case TARGET_DIF_TYPE2_PROT: + return IB_T10DIF_TYPE2; + case TARGET_DIF_TYPE3_PROT: + return IB_T10DIF_TYPE3; + default: + return IB_T10DIF_NONE; + } +} - ib_sge->lkey = fr_desc->data_mr->lkey; - ib_sge->addr = fr_desc->data_frpl->page_list[0] + page_off; - ib_sge->length = data_len; +static int +isert_set_sig_attrs(struct se_cmd *se_cmd, struct ib_sig_attrs *sig_attrs) +{ + enum ib_t10_dif_type ib_prot_type = se2ib_prot_type(se_cmd->prot_type); + + sig_attrs->mem.sig_type = IB_SIG_TYPE_T10_DIF; + sig_attrs->wire.sig_type = IB_SIG_TYPE_T10_DIF; + sig_attrs->mem.sig.dif.pi_interval = + se_cmd->se_dev->dev_attrib.block_size; + sig_attrs->wire.sig.dif.pi_interval = + se_cmd->se_dev->dev_attrib.block_size; + + switch (se_cmd->prot_op) { + case TARGET_PROT_DIN_INSERT: + case TARGET_PROT_DOUT_STRIP: + sig_attrs->mem.sig.dif.type = IB_T10DIF_NONE; + sig_attrs->wire.sig.dif.type = ib_prot_type; + sig_attrs->wire.sig.dif.bg_type = IB_T10DIF_CRC; + sig_attrs->wire.sig.dif.ref_tag = se_cmd->reftag_seed; + break; + case TARGET_PROT_DOUT_INSERT: + case TARGET_PROT_DIN_STRIP: + sig_attrs->mem.sig.dif.type = ib_prot_type; + sig_attrs->mem.sig.dif.bg_type = IB_T10DIF_CRC; + sig_attrs->mem.sig.dif.ref_tag = se_cmd->reftag_seed; + sig_attrs->wire.sig.dif.type = IB_T10DIF_NONE; + break; + case TARGET_PROT_DIN_PASS: + case TARGET_PROT_DOUT_PASS: + sig_attrs->mem.sig.dif.type = ib_prot_type; + sig_attrs->mem.sig.dif.bg_type = IB_T10DIF_CRC; + sig_attrs->mem.sig.dif.ref_tag = se_cmd->reftag_seed; + sig_attrs->wire.sig.dif.type = ib_prot_type; + sig_attrs->wire.sig.dif.bg_type = IB_T10DIF_CRC; + sig_attrs->wire.sig.dif.ref_tag = se_cmd->reftag_seed; + break; + default: + pr_err("Unsupported PI operation %d\n", se_cmd->prot_op); + return -EINVAL; + } - pr_debug("RDMA ib_sge: addr: 0x%16llx length: %u lkey: %08x\n", - ib_sge->addr, ib_sge->length, ib_sge->lkey); + return 0; +} + +static inline u8 +isert_set_prot_checks(u8 prot_checks) +{ + return (prot_checks & TARGET_DIF_CHECK_GUARD ? 0xc0 : 0) | + (prot_checks & TARGET_DIF_CHECK_REFTAG ? 0x30 : 0) | + (prot_checks & TARGET_DIF_CHECK_REFTAG ? 0x0f : 0); +} + +static int +isert_reg_sig_mr(struct isert_conn *isert_conn, struct se_cmd *se_cmd, + struct fast_reg_descriptor *fr_desc, + struct ib_sge *data_sge, struct ib_sge *prot_sge, + struct ib_sge *sig_sge) +{ + struct ib_send_wr sig_wr, inv_wr; + struct ib_send_wr *bad_wr, *wr = NULL; + struct pi_context *pi_ctx = fr_desc->pi_ctx; + struct ib_sig_attrs sig_attrs; + int ret; + u32 key; + + memset(&sig_attrs, 0, sizeof(sig_attrs)); + ret = isert_set_sig_attrs(se_cmd, &sig_attrs); + if (ret) + goto err; + + sig_attrs.check_mask = isert_set_prot_checks(se_cmd->prot_checks); + + if (!(fr_desc->ind & ISERT_SIG_KEY_VALID)) { + memset(&inv_wr, 0, sizeof(inv_wr)); + inv_wr.opcode = IB_WR_LOCAL_INV; + inv_wr.wr_id = ISER_FASTREG_LI_WRID; + inv_wr.ex.invalidate_rkey = pi_ctx->sig_mr->rkey; + wr = &inv_wr; + /* Bump the key */ + key = (u8)(pi_ctx->sig_mr->rkey & 0x000000FF); + ib_update_fast_reg_key(pi_ctx->sig_mr, ++key); + } + + memset(&sig_wr, 0, sizeof(sig_wr)); + sig_wr.opcode = IB_WR_REG_SIG_MR; + sig_wr.wr_id = ISER_FASTREG_LI_WRID; + sig_wr.sg_list = data_sge; + sig_wr.num_sge = 1; + sig_wr.wr.sig_handover.access_flags = IB_ACCESS_LOCAL_WRITE; + sig_wr.wr.sig_handover.sig_attrs = &sig_attrs; + sig_wr.wr.sig_handover.sig_mr = pi_ctx->sig_mr; + if (se_cmd->t_prot_sg) + sig_wr.wr.sig_handover.prot = prot_sge; + + if (!wr) + wr = &sig_wr; + else + wr->next = &sig_wr; + + ret = ib_post_send(isert_conn->conn_qp, wr, &bad_wr); + if (ret) { + pr_err("fast registration failed, ret:%d\n", ret); + goto err; + } + fr_desc->ind &= ~ISERT_SIG_KEY_VALID; + + sig_sge->lkey = pi_ctx->sig_mr->lkey; + sig_sge->addr = 0; + sig_sge->length = se_cmd->data_length; + if (se_cmd->prot_op != TARGET_PROT_DIN_STRIP && + se_cmd->prot_op != TARGET_PROT_DOUT_INSERT) + /* + * We have protection guards on the wire + * so we need to set a larget transfer + */ + sig_sge->length += se_cmd->prot_length; + pr_debug("sig_sge: addr: 0x%llx length: %u lkey: %x\n", + sig_sge->addr, sig_sge->length, + sig_sge->lkey); +err: return ret; } @@ -2305,62 +2742,82 @@ isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd, { struct se_cmd *se_cmd = &cmd->se_cmd; struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd); - struct isert_conn *isert_conn = (struct isert_conn *)conn->context; - struct ib_device *ib_dev = isert_conn->conn_cm_id->device; + struct isert_conn *isert_conn = conn->context; + struct ib_sge data_sge; struct ib_send_wr *send_wr; - struct ib_sge *ib_sge; - struct scatterlist *sg_start; - struct fast_reg_descriptor *fr_desc; - u32 sg_off = 0, sg_nents; - u32 offset = 0, data_len, data_left, rdma_write_max; - int ret = 0, count; + struct fast_reg_descriptor *fr_desc = NULL; + u32 offset; + int ret = 0; unsigned long flags; - if (wr->iser_ib_op == ISER_IB_RDMA_WRITE) { - data_left = se_cmd->data_length; - } else { - offset = cmd->write_data_done; - sg_off = offset / PAGE_SIZE; - data_left = se_cmd->data_length - cmd->write_data_done; - isert_cmd->tx_desc.isert_cmd = isert_cmd; - } + isert_cmd->tx_desc.isert_cmd = isert_cmd; - sg_start = &cmd->se_cmd.t_data_sg[sg_off]; - sg_nents = se_cmd->t_data_nents - sg_off; + offset = wr->iser_ib_op == ISER_IB_RDMA_READ ? cmd->write_data_done : 0; + ret = isert_map_data_buf(isert_conn, isert_cmd, se_cmd->t_data_sg, + se_cmd->t_data_nents, se_cmd->data_length, + offset, wr->iser_ib_op, &wr->data); + if (ret) + return ret; - count = ib_dma_map_sg(ib_dev, sg_start, sg_nents, - (wr->iser_ib_op == ISER_IB_RDMA_WRITE) ? - DMA_TO_DEVICE : DMA_FROM_DEVICE); - if (unlikely(!count)) { - pr_err("Cmd: %p unrable to map SGs\n", isert_cmd); - return -EINVAL; + if (wr->data.dma_nents != 1 || + se_cmd->prot_op != TARGET_PROT_NORMAL) { + spin_lock_irqsave(&isert_conn->conn_lock, flags); + fr_desc = list_first_entry(&isert_conn->conn_fr_pool, + struct fast_reg_descriptor, list); + list_del(&fr_desc->list); + spin_unlock_irqrestore(&isert_conn->conn_lock, flags); + wr->fr_desc = fr_desc; } - wr->sge = sg_start; - wr->num_sge = sg_nents; - pr_debug("Mapped cmd: %p count: %u sg: %p sg_nents: %u rdma_len %d\n", - isert_cmd, count, sg_start, sg_nents, data_left); - memset(&wr->s_ib_sge, 0, sizeof(*ib_sge)); - ib_sge = &wr->s_ib_sge; - wr->ib_sge = ib_sge; + ret = isert_fast_reg_mr(isert_conn, fr_desc, &wr->data, + ISERT_DATA_KEY_VALID, &data_sge); + if (ret) + goto unmap_cmd; + + if (se_cmd->prot_op != TARGET_PROT_NORMAL) { + struct ib_sge prot_sge, sig_sge; + + if (se_cmd->t_prot_sg) { + ret = isert_map_data_buf(isert_conn, isert_cmd, + se_cmd->t_prot_sg, + se_cmd->t_prot_nents, + se_cmd->prot_length, + 0, wr->iser_ib_op, &wr->prot); + if (ret) + goto unmap_cmd; + + ret = isert_fast_reg_mr(isert_conn, fr_desc, &wr->prot, + ISERT_PROT_KEY_VALID, &prot_sge); + if (ret) + goto unmap_prot_cmd; + } + + ret = isert_reg_sig_mr(isert_conn, se_cmd, fr_desc, + &data_sge, &prot_sge, &sig_sge); + if (ret) + goto unmap_prot_cmd; + fr_desc->ind |= ISERT_PROTECTED; + memcpy(&wr->s_ib_sge, &sig_sge, sizeof(sig_sge)); + } else + memcpy(&wr->s_ib_sge, &data_sge, sizeof(data_sge)); + + wr->ib_sge = &wr->s_ib_sge; wr->send_wr_num = 1; memset(&wr->s_send_wr, 0, sizeof(*send_wr)); wr->send_wr = &wr->s_send_wr; - wr->isert_cmd = isert_cmd; - rdma_write_max = ISCSI_ISER_SG_TABLESIZE * PAGE_SIZE; send_wr = &isert_cmd->rdma_wr.s_send_wr; - send_wr->sg_list = ib_sge; + send_wr->sg_list = &wr->s_ib_sge; send_wr->num_sge = 1; send_wr->wr_id = (unsigned long)&isert_cmd->tx_desc; if (wr->iser_ib_op == ISER_IB_RDMA_WRITE) { send_wr->opcode = IB_WR_RDMA_WRITE; send_wr->wr.rdma.remote_addr = isert_cmd->read_va; send_wr->wr.rdma.rkey = isert_cmd->read_stag; - send_wr->send_flags = 0; - send_wr->next = &isert_cmd->tx_desc.send_wr; + send_wr->send_flags = se_cmd->prot_op == TARGET_PROT_NORMAL ? + 0 : IB_SEND_SIGNALED; } else { send_wr->opcode = IB_WR_RDMA_READ; send_wr->wr.rdma.remote_addr = isert_cmd->write_va; @@ -2368,37 +2825,18 @@ isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd, send_wr->send_flags = IB_SEND_SIGNALED; } - data_len = min(data_left, rdma_write_max); - wr->cur_rdma_length = data_len; - - /* if there is a single dma entry, dma mr is sufficient */ - if (count == 1) { - ib_sge->addr = ib_sg_dma_address(ib_dev, &sg_start[0]); - ib_sge->length = ib_sg_dma_len(ib_dev, &sg_start[0]); - ib_sge->lkey = isert_conn->conn_mr->lkey; - wr->fr_desc = NULL; - } else { + return 0; +unmap_prot_cmd: + if (se_cmd->t_prot_sg) + isert_unmap_data_buf(isert_conn, &wr->prot); +unmap_cmd: + if (fr_desc) { spin_lock_irqsave(&isert_conn->conn_lock, flags); - fr_desc = list_first_entry(&isert_conn->conn_fr_pool, - struct fast_reg_descriptor, list); - list_del(&fr_desc->list); + list_add_tail(&fr_desc->list, &isert_conn->conn_fr_pool); spin_unlock_irqrestore(&isert_conn->conn_lock, flags); - wr->fr_desc = fr_desc; - - ret = isert_fast_reg_mr(fr_desc, isert_conn, sg_start, - ib_sge, sg_nents, offset, data_len); - if (ret) { - list_add_tail(&fr_desc->list, &isert_conn->conn_fr_pool); - goto unmap_sg; - } } + isert_unmap_data_buf(isert_conn, &wr->data); - return 0; - -unmap_sg: - ib_dma_unmap_sg(ib_dev, sg_start, sg_nents, - (wr->iser_ib_op == ISER_IB_RDMA_WRITE) ? - DMA_TO_DEVICE : DMA_FROM_DEVICE); return ret; } @@ -2422,25 +2860,35 @@ isert_put_datain(struct iscsi_conn *conn, struct iscsi_cmd *cmd) return rc; } - /* - * Build isert_conn->tx_desc for iSCSI response PDU and attach - */ - isert_create_send_desc(isert_conn, isert_cmd, &isert_cmd->tx_desc); - iscsit_build_rsp_pdu(cmd, conn, true, (struct iscsi_scsi_rsp *) - &isert_cmd->tx_desc.iscsi_header); - isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc); - isert_init_send_wr(isert_conn, isert_cmd, - &isert_cmd->tx_desc.send_wr, true); + if (se_cmd->prot_op == TARGET_PROT_NORMAL) { + /* + * Build isert_conn->tx_desc for iSCSI response PDU and attach + */ + isert_create_send_desc(isert_conn, isert_cmd, + &isert_cmd->tx_desc); + iscsit_build_rsp_pdu(cmd, conn, true, (struct iscsi_scsi_rsp *) + &isert_cmd->tx_desc.iscsi_header); + isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc); + isert_init_send_wr(isert_conn, isert_cmd, + &isert_cmd->tx_desc.send_wr, true); + isert_cmd->rdma_wr.s_send_wr.next = &isert_cmd->tx_desc.send_wr; + wr->send_wr_num += 1; + } - atomic_add(wr->send_wr_num + 1, &isert_conn->post_send_buf_count); + atomic_add(wr->send_wr_num, &isert_conn->post_send_buf_count); rc = ib_post_send(isert_conn->conn_qp, wr->send_wr, &wr_failed); if (rc) { pr_warn("ib_post_send() failed for IB_WR_RDMA_WRITE\n"); - atomic_sub(wr->send_wr_num + 1, &isert_conn->post_send_buf_count); + atomic_sub(wr->send_wr_num, &isert_conn->post_send_buf_count); } - pr_debug("Cmd: %p posted RDMA_WRITE + Response for iSER Data READ\n", - isert_cmd); + + if (se_cmd->prot_op == TARGET_PROT_NORMAL) + pr_debug("Cmd: %p posted RDMA_WRITE + Response for iSER Data " + "READ\n", isert_cmd); + else + pr_debug("Cmd: %p posted RDMA_WRITE for iSER Data READ\n", + isert_cmd); return 1; } @@ -2815,6 +3263,8 @@ static struct iscsit_transport iser_target_transport = { .iscsit_get_dataout = isert_get_dataout, .iscsit_queue_data_in = isert_put_datain, .iscsit_queue_status = isert_put_response, + .iscsit_aborted_task = isert_aborted_task, + .iscsit_get_sup_prot_ops = isert_get_sup_prot_ops, }; static int __init isert_init(void) diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h index f6ae7f5dd408..4c072ae34c01 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.h +++ b/drivers/infiniband/ulp/isert/ib_isert.h @@ -50,11 +50,35 @@ struct iser_tx_desc { struct ib_send_wr send_wr; } __packed; +enum isert_indicator { + ISERT_PROTECTED = 1 << 0, + ISERT_DATA_KEY_VALID = 1 << 1, + ISERT_PROT_KEY_VALID = 1 << 2, + ISERT_SIG_KEY_VALID = 1 << 3, +}; + +struct pi_context { + struct ib_mr *prot_mr; + struct ib_fast_reg_page_list *prot_frpl; + struct ib_mr *sig_mr; +}; + struct fast_reg_descriptor { - struct list_head list; - struct ib_mr *data_mr; - struct ib_fast_reg_page_list *data_frpl; - bool valid; + struct list_head list; + struct ib_mr *data_mr; + struct ib_fast_reg_page_list *data_frpl; + u8 ind; + struct pi_context *pi_ctx; +}; + +struct isert_data_buf { + struct scatterlist *sg; + int nents; + u32 sg_off; + u32 len; /* cur_rdma_length */ + u32 offset; + unsigned int dma_nents; + enum dma_data_direction dma_dir; }; struct isert_rdma_wr { @@ -63,12 +87,11 @@ struct isert_rdma_wr { enum iser_ib_op_code iser_ib_op; struct ib_sge *ib_sge; struct ib_sge s_ib_sge; - int num_sge; - struct scatterlist *sge; int send_wr_num; struct ib_send_wr *send_wr; struct ib_send_wr s_send_wr; - u32 cur_rdma_length; + struct isert_data_buf data; + struct isert_data_buf prot; struct fast_reg_descriptor *fr_desc; }; @@ -141,6 +164,7 @@ struct isert_cq_desc { struct isert_device { int use_fastreg; + bool pi_capable; int cqs_used; int refcount; int cq_active_qps[ISERT_MAX_CQ]; diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c index 0e537d8d0e47..fe09f2788b15 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.c +++ b/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -1078,6 +1078,7 @@ static void srpt_unmap_sg_to_ib_sge(struct srpt_rdma_ch *ch, static int srpt_map_sg_to_ib_sge(struct srpt_rdma_ch *ch, struct srpt_send_ioctx *ioctx) { + struct ib_device *dev = ch->sport->sdev->device; struct se_cmd *cmd; struct scatterlist *sg, *sg_orig; int sg_cnt; @@ -1124,7 +1125,7 @@ static int srpt_map_sg_to_ib_sge(struct srpt_rdma_ch *ch, db = ioctx->rbufs; tsize = cmd->data_length; - dma_len = sg_dma_len(&sg[0]); + dma_len = ib_sg_dma_len(dev, &sg[0]); riu = ioctx->rdma_ius; /* @@ -1155,7 +1156,8 @@ static int srpt_map_sg_to_ib_sge(struct srpt_rdma_ch *ch, ++j; if (j < count) { sg = sg_next(sg); - dma_len = sg_dma_len(sg); + dma_len = ib_sg_dma_len( + dev, sg); } } } else { @@ -1192,8 +1194,8 @@ static int srpt_map_sg_to_ib_sge(struct srpt_rdma_ch *ch, tsize = cmd->data_length; riu = ioctx->rdma_ius; sg = sg_orig; - dma_len = sg_dma_len(&sg[0]); - dma_addr = sg_dma_address(&sg[0]); + dma_len = ib_sg_dma_len(dev, &sg[0]); + dma_addr = ib_sg_dma_address(dev, &sg[0]); /* this second loop is really mapped sg_addres to rdma_iu->ib_sge */ for (i = 0, j = 0; @@ -1216,8 +1218,10 @@ static int srpt_map_sg_to_ib_sge(struct srpt_rdma_ch *ch, ++j; if (j < count) { sg = sg_next(sg); - dma_len = sg_dma_len(sg); - dma_addr = sg_dma_address(sg); + dma_len = ib_sg_dma_len( + dev, sg); + dma_addr = ib_sg_dma_address( + dev, sg); } } } else { @@ -2580,7 +2584,7 @@ static int srpt_cm_req_recv(struct ib_cm_id *cm_id, goto destroy_ib; } - ch->sess = transport_init_session(); + ch->sess = transport_init_session(TARGET_PROT_NORMAL); if (IS_ERR(ch->sess)) { rej->reason = __constant_cpu_to_be32( SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES); @@ -3081,6 +3085,14 @@ static void srpt_queue_tm_rsp(struct se_cmd *cmd) srpt_queue_response(cmd); } +static void srpt_aborted_task(struct se_cmd *cmd) +{ + struct srpt_send_ioctx *ioctx = container_of(cmd, + struct srpt_send_ioctx, cmd); + + srpt_unmap_sg_to_ib_sge(ioctx->ch, ioctx); +} + static int srpt_queue_status(struct se_cmd *cmd) { struct srpt_send_ioctx *ioctx; @@ -3928,6 +3940,7 @@ static struct target_core_fabric_ops srpt_template = { .queue_data_in = srpt_queue_data_in, .queue_status = srpt_queue_status, .queue_tm_rsp = srpt_queue_tm_rsp, + .aborted_task = srpt_aborted_task, /* * Setup function pointers for generic logic in * target_core_fabric_configfs.c diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index 788c4fe2b0c9..68fb66fdb757 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -684,6 +684,20 @@ static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) qlt_xmit_tm_rsp(mcmd); } +static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) +{ + struct qla_tgt_cmd *cmd = container_of(se_cmd, + struct qla_tgt_cmd, se_cmd); + struct scsi_qla_host *vha = cmd->vha; + struct qla_hw_data *ha = vha->hw; + + if (!cmd->sg_mapped) + return; + + pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); + cmd->sg_mapped = 0; +} + /* Local pointer to allocated TCM configfs fabric module */ struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs; struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs; @@ -1468,7 +1482,7 @@ static int tcm_qla2xxx_check_initiator_node_acl( } se_tpg = &tpg->se_tpg; - se_sess = transport_init_session(); + se_sess = transport_init_session(TARGET_PROT_NORMAL); if (IS_ERR(se_sess)) { pr_err("Unable to initialize struct se_session\n"); return PTR_ERR(se_sess); @@ -1877,6 +1891,7 @@ static struct target_core_fabric_ops tcm_qla2xxx_ops = { .queue_data_in = tcm_qla2xxx_queue_data_in, .queue_status = tcm_qla2xxx_queue_status, .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, + .aborted_task = tcm_qla2xxx_aborted_task, /* * Setup function pointers for generic logic in * target_core_fabric_configfs.c @@ -1926,6 +1941,7 @@ static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { .queue_data_in = tcm_qla2xxx_queue_data_in, .queue_status = tcm_qla2xxx_queue_status, .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, + .aborted_task = tcm_qla2xxx_aborted_task, /* * Setup function pointers for generic logic in * target_core_fabric_configfs.c diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index b83ec378d04f..78cab13bbb1b 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -499,6 +499,23 @@ static int iscsit_queue_rsp(struct iscsi_conn *conn, struct iscsi_cmd *cmd) return 0; } +static void iscsit_aborted_task(struct iscsi_conn *conn, struct iscsi_cmd *cmd) +{ + bool scsi_cmd = (cmd->iscsi_opcode == ISCSI_OP_SCSI_CMD); + + spin_lock_bh(&conn->cmd_lock); + if (!list_empty(&cmd->i_conn_node)) + list_del_init(&cmd->i_conn_node); + spin_unlock_bh(&conn->cmd_lock); + + __iscsit_free_cmd(cmd, scsi_cmd, true); +} + +static enum target_prot_op iscsit_get_sup_prot_ops(struct iscsi_conn *conn) +{ + return TARGET_PROT_NORMAL; +} + static struct iscsit_transport iscsi_target_transport = { .name = "iSCSI/TCP", .transport_type = ISCSI_TCP, @@ -513,6 +530,8 @@ static struct iscsit_transport iscsi_target_transport = { .iscsit_response_queue = iscsit_response_queue, .iscsit_queue_data_in = iscsit_queue_rsp, .iscsit_queue_status = iscsit_queue_rsp, + .iscsit_aborted_task = iscsit_aborted_task, + .iscsit_get_sup_prot_ops = iscsit_get_sup_prot_ops, }; static int __init iscsi_target_init_module(void) @@ -1503,6 +1522,16 @@ int iscsit_setup_nop_out(struct iscsi_conn *conn, struct iscsi_cmd *cmd, { u32 payload_length = ntoh24(hdr->dlength); + if (!(hdr->flags & ISCSI_FLAG_CMD_FINAL)) { + pr_err("NopOUT Flag's, Left Most Bit not set, protocol error.\n"); + if (!cmd) + return iscsit_add_reject(conn, ISCSI_REASON_PROTOCOL_ERROR, + (unsigned char *)hdr); + + return iscsit_reject_cmd(cmd, ISCSI_REASON_PROTOCOL_ERROR, + (unsigned char *)hdr); + } + if (hdr->itt == RESERVED_ITT && !(hdr->opcode & ISCSI_OP_IMMEDIATE)) { pr_err("NOPOUT ITT is reserved, but Immediate Bit is" " not set, protocol error.\n"); @@ -2468,6 +2497,7 @@ static void iscsit_build_conn_drop_async_message(struct iscsi_conn *conn) { struct iscsi_cmd *cmd; struct iscsi_conn *conn_p; + bool found = false; /* * Only send a Asynchronous Message on connections whos network @@ -2476,11 +2506,12 @@ static void iscsit_build_conn_drop_async_message(struct iscsi_conn *conn) list_for_each_entry(conn_p, &conn->sess->sess_conn_list, conn_list) { if (conn_p->conn_state == TARG_CONN_STATE_LOGGED_IN) { iscsit_inc_conn_usage_count(conn_p); + found = true; break; } } - if (!conn_p) + if (!found) return; cmd = iscsit_allocate_cmd(conn_p, TASK_RUNNING); diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c index 1c0088fe9e99..ae03f3e5de1e 100644 --- a/drivers/target/iscsi/iscsi_target_configfs.c +++ b/drivers/target/iscsi/iscsi_target_configfs.c @@ -1052,6 +1052,11 @@ TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR); */ DEF_TPG_ATTRIB(default_erl); TPG_ATTR(default_erl, S_IRUGO | S_IWUSR); +/* + * Define iscsi_tpg_attrib_s_t10_pi + */ +DEF_TPG_ATTRIB(t10_pi); +TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR); static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = { &iscsi_tpg_attrib_authentication.attr, @@ -1064,6 +1069,7 @@ static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = { &iscsi_tpg_attrib_prod_mode_write_protect.attr, &iscsi_tpg_attrib_demo_mode_discovery.attr, &iscsi_tpg_attrib_default_erl.attr, + &iscsi_tpg_attrib_t10_pi.attr, NULL, }; @@ -1815,6 +1821,13 @@ static void lio_queue_tm_rsp(struct se_cmd *se_cmd) iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state); } +static void lio_aborted_task(struct se_cmd *se_cmd) +{ + struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); + + cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd); +} + static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg) { struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; @@ -1999,6 +2012,7 @@ int iscsi_target_register_configfs(void) fabric->tf_ops.queue_data_in = &lio_queue_data_in; fabric->tf_ops.queue_status = &lio_queue_status; fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp; + fabric->tf_ops.aborted_task = &lio_aborted_task; /* * Setup function pointers for generic logic in target_core_fabric_configfs.c */ diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h index 48f7b3bf4e8c..886d74d6f3d4 100644 --- a/drivers/target/iscsi/iscsi_target_core.h +++ b/drivers/target/iscsi/iscsi_target_core.h @@ -58,7 +58,8 @@ #define TA_DEMO_MODE_DISCOVERY 1 #define TA_DEFAULT_ERL 0 #define TA_CACHE_CORE_NPS 0 - +/* T10 protection information disabled by default */ +#define TA_DEFAULT_T10_PI 0 #define ISCSI_IOV_DATA_BUFFER 5 @@ -765,6 +766,7 @@ struct iscsi_tpg_attrib { u32 prod_mode_write_protect; u32 demo_mode_discovery; u32 default_erl; + u8 t10_pi; struct iscsi_portal_group *tpg; }; @@ -787,6 +789,7 @@ struct iscsi_np { void *np_context; struct iscsit_transport *np_transport; struct list_head np_list; + struct iscsi_tpg_np *tpg_np; } ____cacheline_aligned; struct iscsi_tpg_np { diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c index e29279e6b577..8739b98f6f93 100644 --- a/drivers/target/iscsi/iscsi_target_login.c +++ b/drivers/target/iscsi/iscsi_target_login.c @@ -259,6 +259,7 @@ static int iscsi_login_zero_tsih_s1( { struct iscsi_session *sess = NULL; struct iscsi_login_req *pdu = (struct iscsi_login_req *)buf; + enum target_prot_op sup_pro_ops; int ret; sess = kzalloc(sizeof(struct iscsi_session), GFP_KERNEL); @@ -320,8 +321,9 @@ static int iscsi_login_zero_tsih_s1( kfree(sess); return -ENOMEM; } + sup_pro_ops = conn->conn_transport->iscsit_get_sup_prot_ops(conn); - sess->se_sess = transport_init_session(); + sess->se_sess = transport_init_session(sup_pro_ops); if (IS_ERR(sess->se_sess)) { iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR, ISCSI_LOGIN_STATUS_NO_RESOURCES); diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c index 44a5471de00f..eb96b20dc09e 100644 --- a/drivers/target/iscsi/iscsi_target_tpg.c +++ b/drivers/target/iscsi/iscsi_target_tpg.c @@ -225,6 +225,7 @@ static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; a->default_erl = TA_DEFAULT_ERL; + a->t10_pi = TA_DEFAULT_T10_PI; } int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) @@ -500,6 +501,7 @@ struct iscsi_tpg_np *iscsit_tpg_add_network_portal( init_completion(&tpg_np->tpg_np_comp); kref_init(&tpg_np->tpg_np_kref); tpg_np->tpg_np = np; + np->tpg_np = tpg_np; tpg_np->tpg = tpg; spin_lock(&tpg->tpg_np_lock); @@ -858,3 +860,22 @@ int iscsit_ta_default_erl( return 0; } + +int iscsit_ta_t10_pi( + struct iscsi_portal_group *tpg, + u32 flag) +{ + struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; + + if ((flag != 0) && (flag != 1)) { + pr_err("Illegal value %d\n", flag); + return -EINVAL; + } + + a->t10_pi = flag; + pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" + " %s\n", tpg->tpgt, (a->t10_pi) ? + "ON" : "OFF"); + + return 0; +} diff --git a/drivers/target/iscsi/iscsi_target_tpg.h b/drivers/target/iscsi/iscsi_target_tpg.h index 213c0fc7fdc9..0a182f2aa8a2 100644 --- a/drivers/target/iscsi/iscsi_target_tpg.h +++ b/drivers/target/iscsi/iscsi_target_tpg.h @@ -39,5 +39,6 @@ extern int iscsit_ta_demo_mode_write_protect(struct iscsi_portal_group *, u32); extern int iscsit_ta_prod_mode_write_protect(struct iscsi_portal_group *, u32); extern int iscsit_ta_demo_mode_discovery(struct iscsi_portal_group *, u32); extern int iscsit_ta_default_erl(struct iscsi_portal_group *, u32); +extern int iscsit_ta_t10_pi(struct iscsi_portal_group *, u32); #endif /* ISCSI_TARGET_TPG_H */ diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c index e655b042ed18..53e157cb8c54 100644 --- a/drivers/target/iscsi/iscsi_target_util.c +++ b/drivers/target/iscsi/iscsi_target_util.c @@ -705,8 +705,8 @@ void iscsit_release_cmd(struct iscsi_cmd *cmd) } EXPORT_SYMBOL(iscsit_release_cmd); -static void __iscsit_free_cmd(struct iscsi_cmd *cmd, bool scsi_cmd, - bool check_queues) +void __iscsit_free_cmd(struct iscsi_cmd *cmd, bool scsi_cmd, + bool check_queues) { struct iscsi_conn *conn = cmd->conn; diff --git a/drivers/target/iscsi/iscsi_target_util.h b/drivers/target/iscsi/iscsi_target_util.h index 561a424d1980..a68508c4fec8 100644 --- a/drivers/target/iscsi/iscsi_target_util.h +++ b/drivers/target/iscsi/iscsi_target_util.h @@ -30,6 +30,7 @@ extern void iscsit_remove_cmd_from_tx_queues(struct iscsi_cmd *, struct iscsi_co extern bool iscsit_conn_all_queues_empty(struct iscsi_conn *); extern void iscsit_free_queue_reqs_for_conn(struct iscsi_conn *); extern void iscsit_release_cmd(struct iscsi_cmd *); +extern void __iscsit_free_cmd(struct iscsi_cmd *, bool, bool); extern void iscsit_free_cmd(struct iscsi_cmd *, bool); extern int iscsit_check_session_usage_count(struct iscsi_session *); extern void iscsit_dec_session_usage_count(struct iscsi_session *); diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index fadad7c5f635..c886ad1c39fb 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -212,6 +212,10 @@ static void tcm_loop_submission_work(struct work_struct *work) se_cmd->se_cmd_flags |= SCF_BIDI; } + + if (!scsi_prot_sg_count(sc) && scsi_get_prot_op(sc) != SCSI_PROT_NORMAL) + se_cmd->prot_pto = true; + rc = target_submit_cmd_map_sgls(se_cmd, tl_nexus->se_sess, sc->cmnd, &tl_cmd->tl_sense_buf[0], tl_cmd->sc->device->lun, scsi_bufflen(sc), tcm_loop_sam_attr(sc), @@ -915,6 +919,11 @@ static void tcm_loop_queue_tm_rsp(struct se_cmd *se_cmd) wake_up(&tl_tmr->tl_tmr_wait); } +static void tcm_loop_aborted_task(struct se_cmd *se_cmd) +{ + return; +} + static char *tcm_loop_dump_proto_id(struct tcm_loop_hba *tl_hba) { switch (tl_hba->tl_proto_id) { @@ -1009,7 +1018,7 @@ static int tcm_loop_make_nexus( /* * Initialize the struct se_session pointer */ - tl_nexus->se_sess = transport_init_session(); + tl_nexus->se_sess = transport_init_session(TARGET_PROT_ALL); if (IS_ERR(tl_nexus->se_sess)) { ret = PTR_ERR(tl_nexus->se_sess); goto out; @@ -1483,6 +1492,7 @@ static int tcm_loop_register_configfs(void) fabric->tf_ops.queue_data_in = &tcm_loop_queue_data_in; fabric->tf_ops.queue_status = &tcm_loop_queue_status; fabric->tf_ops.queue_tm_rsp = &tcm_loop_queue_tm_rsp; + fabric->tf_ops.aborted_task = &tcm_loop_aborted_task; /* * Setup function pointers for generic logic in target_core_fabric_configfs.c diff --git a/drivers/target/sbp/sbp_target.c b/drivers/target/sbp/sbp_target.c index 24884cac19ce..e7e93727553c 100644 --- a/drivers/target/sbp/sbp_target.c +++ b/drivers/target/sbp/sbp_target.c @@ -210,7 +210,7 @@ static struct sbp_session *sbp_session_create( return ERR_PTR(-ENOMEM); } - sess->se_sess = transport_init_session(); + sess->se_sess = transport_init_session(TARGET_PROT_NORMAL); if (IS_ERR(sess->se_sess)) { pr_err("failed to init se_session\n"); @@ -1846,6 +1846,11 @@ static void sbp_queue_tm_rsp(struct se_cmd *se_cmd) { } +static void sbp_aborted_task(struct se_cmd *se_cmd) +{ + return; +} + static int sbp_check_stop_free(struct se_cmd *se_cmd) { struct sbp_target_request *req = container_of(se_cmd, @@ -2526,6 +2531,7 @@ static struct target_core_fabric_ops sbp_ops = { .queue_data_in = sbp_queue_data_in, .queue_status = sbp_queue_status, .queue_tm_rsp = sbp_queue_tm_rsp, + .aborted_task = sbp_aborted_task, .check_stop_free = sbp_check_stop_free, .fabric_make_wwn = sbp_make_tport, diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c index c3d9df6aaf5f..fcbe6125b73e 100644 --- a/drivers/target/target_core_alua.c +++ b/drivers/target/target_core_alua.c @@ -455,11 +455,26 @@ out: return rc; } -static inline int core_alua_state_nonoptimized( +static inline void set_ascq(struct se_cmd *cmd, u8 alua_ascq) +{ + /* + * Set SCSI additional sense code (ASC) to 'LUN Not Accessible'; + * The ALUA additional sense code qualifier (ASCQ) is determined + * by the ALUA primary or secondary access state.. + */ + pr_debug("[%s]: ALUA TG Port not available, " + "SenseKey: NOT_READY, ASC/ASCQ: " + "0x04/0x%02x\n", + cmd->se_tfo->get_fabric_name(), alua_ascq); + + cmd->scsi_asc = 0x04; + cmd->scsi_ascq = alua_ascq; +} + +static inline void core_alua_state_nonoptimized( struct se_cmd *cmd, unsigned char *cdb, - int nonop_delay_msecs, - u8 *alua_ascq) + int nonop_delay_msecs) { /* * Set SCF_ALUA_NON_OPTIMIZED here, this value will be checked @@ -468,13 +483,11 @@ static inline int core_alua_state_nonoptimized( */ cmd->se_cmd_flags |= SCF_ALUA_NON_OPTIMIZED; cmd->alua_nonop_delay = nonop_delay_msecs; - return 0; } static inline int core_alua_state_lba_dependent( struct se_cmd *cmd, - struct t10_alua_tg_pt_gp *tg_pt_gp, - u8 *alua_ascq) + struct t10_alua_tg_pt_gp *tg_pt_gp) { struct se_device *dev = cmd->se_dev; u64 segment_size, segment_mult, sectors, lba; @@ -520,7 +533,7 @@ static inline int core_alua_state_lba_dependent( } if (!cur_map) { spin_unlock(&dev->t10_alua.lba_map_lock); - *alua_ascq = ASCQ_04H_ALUA_TG_PT_UNAVAILABLE; + set_ascq(cmd, ASCQ_04H_ALUA_TG_PT_UNAVAILABLE); return 1; } list_for_each_entry(map_mem, &cur_map->lba_map_mem_list, @@ -531,11 +544,11 @@ static inline int core_alua_state_lba_dependent( switch(map_mem->lba_map_mem_alua_state) { case ALUA_ACCESS_STATE_STANDBY: spin_unlock(&dev->t10_alua.lba_map_lock); - *alua_ascq = ASCQ_04H_ALUA_TG_PT_STANDBY; + set_ascq(cmd, ASCQ_04H_ALUA_TG_PT_STANDBY); return 1; case ALUA_ACCESS_STATE_UNAVAILABLE: spin_unlock(&dev->t10_alua.lba_map_lock); - *alua_ascq = ASCQ_04H_ALUA_TG_PT_UNAVAILABLE; + set_ascq(cmd, ASCQ_04H_ALUA_TG_PT_UNAVAILABLE); return 1; default: break; @@ -548,8 +561,7 @@ static inline int core_alua_state_lba_dependent( static inline int core_alua_state_standby( struct se_cmd *cmd, - unsigned char *cdb, - u8 *alua_ascq) + unsigned char *cdb) { /* * Allowed CDBs for ALUA_ACCESS_STATE_STANDBY as defined by @@ -570,7 +582,7 @@ static inline int core_alua_state_standby( case MI_REPORT_TARGET_PGS: return 0; default: - *alua_ascq = ASCQ_04H_ALUA_TG_PT_STANDBY; + set_ascq(cmd, ASCQ_04H_ALUA_TG_PT_STANDBY); return 1; } case MAINTENANCE_OUT: @@ -578,7 +590,7 @@ static inline int core_alua_state_standby( case MO_SET_TARGET_PGS: return 0; default: - *alua_ascq = ASCQ_04H_ALUA_TG_PT_STANDBY; + set_ascq(cmd, ASCQ_04H_ALUA_TG_PT_STANDBY); return 1; } case REQUEST_SENSE: @@ -588,7 +600,7 @@ static inline int core_alua_state_standby( case WRITE_BUFFER: return 0; default: - *alua_ascq = ASCQ_04H_ALUA_TG_PT_STANDBY; + set_ascq(cmd, ASCQ_04H_ALUA_TG_PT_STANDBY); return 1; } @@ -597,8 +609,7 @@ static inline int core_alua_state_standby( static inline int core_alua_state_unavailable( struct se_cmd *cmd, - unsigned char *cdb, - u8 *alua_ascq) + unsigned char *cdb) { /* * Allowed CDBs for ALUA_ACCESS_STATE_UNAVAILABLE as defined by @@ -613,7 +624,7 @@ static inline int core_alua_state_unavailable( case MI_REPORT_TARGET_PGS: return 0; default: - *alua_ascq = ASCQ_04H_ALUA_TG_PT_UNAVAILABLE; + set_ascq(cmd, ASCQ_04H_ALUA_TG_PT_UNAVAILABLE); return 1; } case MAINTENANCE_OUT: @@ -621,7 +632,7 @@ static inline int core_alua_state_unavailable( case MO_SET_TARGET_PGS: return 0; default: - *alua_ascq = ASCQ_04H_ALUA_TG_PT_UNAVAILABLE; + set_ascq(cmd, ASCQ_04H_ALUA_TG_PT_UNAVAILABLE); return 1; } case REQUEST_SENSE: @@ -629,7 +640,7 @@ static inline int core_alua_state_unavailable( case WRITE_BUFFER: return 0; default: - *alua_ascq = ASCQ_04H_ALUA_TG_PT_UNAVAILABLE; + set_ascq(cmd, ASCQ_04H_ALUA_TG_PT_UNAVAILABLE); return 1; } @@ -638,8 +649,7 @@ static inline int core_alua_state_unavailable( static inline int core_alua_state_transition( struct se_cmd *cmd, - unsigned char *cdb, - u8 *alua_ascq) + unsigned char *cdb) { /* * Allowed CDBs for ALUA_ACCESS_STATE_TRANSITION as defined by @@ -654,7 +664,7 @@ static inline int core_alua_state_transition( case MI_REPORT_TARGET_PGS: return 0; default: - *alua_ascq = ASCQ_04H_ALUA_STATE_TRANSITION; + set_ascq(cmd, ASCQ_04H_ALUA_STATE_TRANSITION); return 1; } case REQUEST_SENSE: @@ -662,7 +672,7 @@ static inline int core_alua_state_transition( case WRITE_BUFFER: return 0; default: - *alua_ascq = ASCQ_04H_ALUA_STATE_TRANSITION; + set_ascq(cmd, ASCQ_04H_ALUA_STATE_TRANSITION); return 1; } @@ -684,8 +694,6 @@ target_alua_state_check(struct se_cmd *cmd) struct t10_alua_tg_pt_gp *tg_pt_gp; struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; int out_alua_state, nonop_delay_msecs; - u8 alua_ascq; - int ret; if (dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE) return 0; @@ -701,9 +709,8 @@ target_alua_state_check(struct se_cmd *cmd) if (atomic_read(&port->sep_tg_pt_secondary_offline)) { pr_debug("ALUA: Got secondary offline status for local" " target port\n"); - alua_ascq = ASCQ_04H_ALUA_OFFLINE; - ret = 1; - goto out; + set_ascq(cmd, ASCQ_04H_ALUA_OFFLINE); + return TCM_CHECK_CONDITION_NOT_READY; } /* * Second, obtain the struct t10_alua_tg_pt_gp_member pointer to the @@ -731,20 +738,23 @@ target_alua_state_check(struct se_cmd *cmd) switch (out_alua_state) { case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: - ret = core_alua_state_nonoptimized(cmd, cdb, - nonop_delay_msecs, &alua_ascq); + core_alua_state_nonoptimized(cmd, cdb, nonop_delay_msecs); break; case ALUA_ACCESS_STATE_STANDBY: - ret = core_alua_state_standby(cmd, cdb, &alua_ascq); + if (core_alua_state_standby(cmd, cdb)) + return TCM_CHECK_CONDITION_NOT_READY; break; case ALUA_ACCESS_STATE_UNAVAILABLE: - ret = core_alua_state_unavailable(cmd, cdb, &alua_ascq); + if (core_alua_state_unavailable(cmd, cdb)) + return TCM_CHECK_CONDITION_NOT_READY; break; case ALUA_ACCESS_STATE_TRANSITION: - ret = core_alua_state_transition(cmd, cdb, &alua_ascq); + if (core_alua_state_transition(cmd, cdb)) + return TCM_CHECK_CONDITION_NOT_READY; break; case ALUA_ACCESS_STATE_LBA_DEPENDENT: - ret = core_alua_state_lba_dependent(cmd, tg_pt_gp, &alua_ascq); + if (core_alua_state_lba_dependent(cmd, tg_pt_gp)) + return TCM_CHECK_CONDITION_NOT_READY; break; /* * OFFLINE is a secondary ALUA target port group access state, that is @@ -757,23 +767,6 @@ target_alua_state_check(struct se_cmd *cmd) return TCM_INVALID_CDB_FIELD; } -out: - if (ret > 0) { - /* - * Set SCSI additional sense code (ASC) to 'LUN Not Accessible'; - * The ALUA additional sense code qualifier (ASCQ) is determined - * by the ALUA primary or secondary access state.. - */ - pr_debug("[%s]: ALUA TG Port not available, " - "SenseKey: NOT_READY, ASC/ASCQ: " - "0x04/0x%02x\n", - cmd->se_tfo->get_fabric_name(), alua_ascq); - - cmd->scsi_asc = 0x04; - cmd->scsi_ascq = alua_ascq; - return TCM_CHECK_CONDITION_NOT_READY; - } - return 0; } diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index f0e85b119692..60a9ae6df763 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -457,6 +457,10 @@ static int target_fabric_tf_ops_check( pr_err("Missing tfo->queue_tm_rsp()\n"); return -EINVAL; } + if (!tfo->aborted_task) { + pr_err("Missing tfo->aborted_task()\n"); + return -EINVAL; + } /* * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c index cf991a91a8a9..7d6cddaec525 100644 --- a/drivers/target/target_core_file.c +++ b/drivers/target/target_core_file.c @@ -854,25 +854,6 @@ static int fd_init_prot(struct se_device *dev) return 0; } -static void fd_init_format_buf(struct se_device *dev, unsigned char *buf, - u32 unit_size, u32 *ref_tag, u16 app_tag, - bool inc_reftag) -{ - unsigned char *p = buf; - int i; - - for (i = 0; i < unit_size; i += dev->prot_length) { - *((u16 *)&p[0]) = 0xffff; - *((__be16 *)&p[2]) = cpu_to_be16(app_tag); - *((__be32 *)&p[4]) = cpu_to_be32(*ref_tag); - - if (inc_reftag) - (*ref_tag)++; - - p += dev->prot_length; - } -} - static int fd_format_prot(struct se_device *dev) { struct fd_dev *fd_dev = FD_DEV(dev); @@ -880,10 +861,8 @@ static int fd_format_prot(struct se_device *dev) sector_t prot_length, prot; unsigned char *buf; loff_t pos = 0; - u32 ref_tag = 0; int unit_size = FDBD_FORMAT_UNIT_SIZE * dev->dev_attrib.block_size; int rc, ret = 0, size, len; - bool inc_reftag = false; if (!dev->dev_attrib.pi_prot_type) { pr_err("Unable to format_prot while pi_prot_type == 0\n"); @@ -894,37 +873,20 @@ static int fd_format_prot(struct se_device *dev) return -ENODEV; } - switch (dev->dev_attrib.pi_prot_type) { - case TARGET_DIF_TYPE3_PROT: - ref_tag = 0xffffffff; - break; - case TARGET_DIF_TYPE2_PROT: - case TARGET_DIF_TYPE1_PROT: - inc_reftag = true; - break; - default: - break; - } - buf = vzalloc(unit_size); if (!buf) { pr_err("Unable to allocate FILEIO prot buf\n"); return -ENOMEM; } - prot_length = (dev->transport->get_blocks(dev) + 1) * dev->prot_length; size = prot_length; pr_debug("Using FILEIO prot_length: %llu\n", (unsigned long long)prot_length); + memset(buf, 0xff, unit_size); for (prot = 0; prot < prot_length; prot += unit_size) { - - fd_init_format_buf(dev, buf, unit_size, &ref_tag, 0xffff, - inc_reftag); - len = min(unit_size, size); - rc = kernel_write(prot_fd, buf, len, pos); if (rc != len) { pr_err("vfs_write to prot file failed: %d\n", rc); diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 554d4f75a75a..9e0232cca92e 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -203,10 +203,9 @@ static void iblock_free_device(struct se_device *dev) if (ib_dev->ibd_bd != NULL) blkdev_put(ib_dev->ibd_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL); - if (ib_dev->ibd_bio_set != NULL) { - bioset_integrity_free(ib_dev->ibd_bio_set); + if (ib_dev->ibd_bio_set != NULL) bioset_free(ib_dev->ibd_bio_set); - } + kfree(ib_dev); } diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c index 66a5aba5a0d9..b920db3388cd 100644 --- a/drivers/target/target_core_rd.c +++ b/drivers/target/target_core_rd.c @@ -242,7 +242,7 @@ static void rd_release_prot_space(struct rd_dev *rd_dev) rd_dev->sg_prot_count = 0; } -static int rd_build_prot_space(struct rd_dev *rd_dev, int prot_length) +static int rd_build_prot_space(struct rd_dev *rd_dev, int prot_length, int block_size) { struct rd_dev_sg_table *sg_table; u32 total_sg_needed, sg_tables; @@ -252,8 +252,13 @@ static int rd_build_prot_space(struct rd_dev *rd_dev, int prot_length) if (rd_dev->rd_flags & RDF_NULLIO) return 0; - - total_sg_needed = rd_dev->rd_page_count / prot_length; + /* + * prot_length=8byte dif data + * tot sg needed = rd_page_count * (PGSZ/block_size) * + * (prot_length/block_size) + pad + * PGSZ canceled each other. + */ + total_sg_needed = (rd_dev->rd_page_count * prot_length / block_size) + 1; sg_tables = (total_sg_needed / max_sg_per_table) + 1; @@ -606,7 +611,8 @@ static int rd_init_prot(struct se_device *dev) if (!dev->dev_attrib.pi_prot_type) return 0; - return rd_build_prot_space(rd_dev, dev->prot_length); + return rd_build_prot_space(rd_dev, dev->prot_length, + dev->dev_attrib.block_size); } static void rd_free_prot(struct se_device *dev) diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index 77e6531fb0a1..e0229592ec55 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -89,6 +89,7 @@ static sense_reason_t sbc_emulate_readcapacity_16(struct se_cmd *cmd) { struct se_device *dev = cmd->se_dev; + struct se_session *sess = cmd->se_sess; unsigned char *rbuf; unsigned char buf[32]; unsigned long long blocks = dev->transport->get_blocks(dev); @@ -109,8 +110,10 @@ sbc_emulate_readcapacity_16(struct se_cmd *cmd) /* * Set P_TYPE and PROT_EN bits for DIF support */ - if (dev->dev_attrib.pi_prot_type) - buf[12] = (dev->dev_attrib.pi_prot_type - 1) << 1 | 0x1; + if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { + if (dev->dev_attrib.pi_prot_type) + buf[12] = (dev->dev_attrib.pi_prot_type - 1) << 1 | 0x1; + } if (dev->transport->get_lbppbe) buf[13] = dev->transport->get_lbppbe(dev) & 0x0f; @@ -425,13 +428,14 @@ static sense_reason_t compare_and_write_callback(struct se_cmd *cmd) goto out; } - write_sg = kzalloc(sizeof(struct scatterlist) * cmd->t_data_nents, + write_sg = kmalloc(sizeof(struct scatterlist) * cmd->t_data_nents, GFP_KERNEL); if (!write_sg) { pr_err("Unable to allocate compare_and_write sg\n"); ret = TCM_OUT_OF_RESOURCES; goto out; } + sg_init_table(write_sg, cmd->t_data_nents); /* * Setup verify and write data payloads from total NumberLBAs. */ @@ -569,30 +573,85 @@ sbc_compare_and_write(struct se_cmd *cmd) return TCM_NO_SENSE; } +static int +sbc_set_prot_op_checks(u8 protect, enum target_prot_type prot_type, + bool is_write, struct se_cmd *cmd) +{ + if (is_write) { + cmd->prot_op = protect ? TARGET_PROT_DOUT_PASS : + TARGET_PROT_DOUT_INSERT; + switch (protect) { + case 0x0: + case 0x3: + cmd->prot_checks = 0; + break; + case 0x1: + case 0x5: + cmd->prot_checks = TARGET_DIF_CHECK_GUARD; + if (prot_type == TARGET_DIF_TYPE1_PROT) + cmd->prot_checks |= TARGET_DIF_CHECK_REFTAG; + break; + case 0x2: + if (prot_type == TARGET_DIF_TYPE1_PROT) + cmd->prot_checks = TARGET_DIF_CHECK_REFTAG; + break; + case 0x4: + cmd->prot_checks = TARGET_DIF_CHECK_GUARD; + break; + default: + pr_err("Unsupported protect field %d\n", protect); + return -EINVAL; + } + } else { + cmd->prot_op = protect ? TARGET_PROT_DIN_PASS : + TARGET_PROT_DIN_STRIP; + switch (protect) { + case 0x0: + case 0x1: + case 0x5: + cmd->prot_checks = TARGET_DIF_CHECK_GUARD; + if (prot_type == TARGET_DIF_TYPE1_PROT) + cmd->prot_checks |= TARGET_DIF_CHECK_REFTAG; + break; + case 0x2: + if (prot_type == TARGET_DIF_TYPE1_PROT) + cmd->prot_checks = TARGET_DIF_CHECK_REFTAG; + break; + case 0x3: + cmd->prot_checks = 0; + break; + case 0x4: + cmd->prot_checks = TARGET_DIF_CHECK_GUARD; + break; + default: + pr_err("Unsupported protect field %d\n", protect); + return -EINVAL; + } + } + + return 0; +} + static bool sbc_check_prot(struct se_device *dev, struct se_cmd *cmd, unsigned char *cdb, - u32 sectors) + u32 sectors, bool is_write) { - if (!cmd->t_prot_sg || !cmd->t_prot_nents) + u8 protect = cdb[1] >> 5; + + if ((!cmd->t_prot_sg || !cmd->t_prot_nents) && cmd->prot_pto) return true; switch (dev->dev_attrib.pi_prot_type) { case TARGET_DIF_TYPE3_PROT: - if (!(cdb[1] & 0xe0)) - return true; - cmd->reftag_seed = 0xffffffff; break; case TARGET_DIF_TYPE2_PROT: - if (cdb[1] & 0xe0) + if (protect) return false; cmd->reftag_seed = cmd->t_task_lba; break; case TARGET_DIF_TYPE1_PROT: - if (!(cdb[1] & 0xe0)) - return true; - cmd->reftag_seed = cmd->t_task_lba; break; case TARGET_DIF_TYPE0_PROT: @@ -600,9 +659,15 @@ sbc_check_prot(struct se_device *dev, struct se_cmd *cmd, unsigned char *cdb, return true; } + if (sbc_set_prot_op_checks(protect, dev->dev_attrib.pi_prot_type, + is_write, cmd)) + return false; + cmd->prot_type = dev->dev_attrib.pi_prot_type; cmd->prot_length = dev->prot_length * sectors; - cmd->prot_handover = PROT_SEPERATED; + pr_debug("%s: prot_type=%d, prot_length=%d prot_op=%d prot_checks=%d\n", + __func__, cmd->prot_type, cmd->prot_length, + cmd->prot_op, cmd->prot_checks); return true; } @@ -628,7 +693,7 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops) sectors = transport_get_sectors_10(cdb); cmd->t_task_lba = transport_lba_32(cdb); - if (!sbc_check_prot(dev, cmd, cdb, sectors)) + if (!sbc_check_prot(dev, cmd, cdb, sectors, false)) return TCM_UNSUPPORTED_SCSI_OPCODE; cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; @@ -639,7 +704,7 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops) sectors = transport_get_sectors_12(cdb); cmd->t_task_lba = transport_lba_32(cdb); - if (!sbc_check_prot(dev, cmd, cdb, sectors)) + if (!sbc_check_prot(dev, cmd, cdb, sectors, false)) return TCM_UNSUPPORTED_SCSI_OPCODE; cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; @@ -650,7 +715,7 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops) sectors = transport_get_sectors_16(cdb); cmd->t_task_lba = transport_lba_64(cdb); - if (!sbc_check_prot(dev, cmd, cdb, sectors)) + if (!sbc_check_prot(dev, cmd, cdb, sectors, false)) return TCM_UNSUPPORTED_SCSI_OPCODE; cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; @@ -669,7 +734,7 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops) sectors = transport_get_sectors_10(cdb); cmd->t_task_lba = transport_lba_32(cdb); - if (!sbc_check_prot(dev, cmd, cdb, sectors)) + if (!sbc_check_prot(dev, cmd, cdb, sectors, true)) return TCM_UNSUPPORTED_SCSI_OPCODE; if (cdb[1] & 0x8) @@ -682,7 +747,7 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops) sectors = transport_get_sectors_12(cdb); cmd->t_task_lba = transport_lba_32(cdb); - if (!sbc_check_prot(dev, cmd, cdb, sectors)) + if (!sbc_check_prot(dev, cmd, cdb, sectors, true)) return TCM_UNSUPPORTED_SCSI_OPCODE; if (cdb[1] & 0x8) @@ -695,7 +760,7 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops) sectors = transport_get_sectors_16(cdb); cmd->t_task_lba = transport_lba_64(cdb); - if (!sbc_check_prot(dev, cmd, cdb, sectors)) + if (!sbc_check_prot(dev, cmd, cdb, sectors, true)) return TCM_UNSUPPORTED_SCSI_OPCODE; if (cdb[1] & 0x8) @@ -1031,6 +1096,50 @@ err: } EXPORT_SYMBOL(sbc_execute_unmap); +void +sbc_dif_generate(struct se_cmd *cmd) +{ + struct se_device *dev = cmd->se_dev; + struct se_dif_v1_tuple *sdt; + struct scatterlist *dsg, *psg = cmd->t_prot_sg; + sector_t sector = cmd->t_task_lba; + void *daddr, *paddr; + int i, j, offset = 0; + + for_each_sg(cmd->t_data_sg, dsg, cmd->t_data_nents, i) { + daddr = kmap_atomic(sg_page(dsg)) + dsg->offset; + paddr = kmap_atomic(sg_page(psg)) + psg->offset; + + for (j = 0; j < dsg->length; j += dev->dev_attrib.block_size) { + + if (offset >= psg->length) { + kunmap_atomic(paddr); + psg = sg_next(psg); + paddr = kmap_atomic(sg_page(psg)) + psg->offset; + offset = 0; + } + + sdt = paddr + offset; + sdt->guard_tag = cpu_to_be16(crc_t10dif(daddr + j, + dev->dev_attrib.block_size)); + if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE1_PROT) + sdt->ref_tag = cpu_to_be32(sector & 0xffffffff); + sdt->app_tag = 0; + + pr_debug("DIF WRITE INSERT sector: %llu guard_tag: 0x%04x" + " app_tag: 0x%04x ref_tag: %u\n", + (unsigned long long)sector, sdt->guard_tag, + sdt->app_tag, be32_to_cpu(sdt->ref_tag)); + + sector++; + offset += sizeof(struct se_dif_v1_tuple); + } + + kunmap_atomic(paddr); + kunmap_atomic(daddr); + } +} + static sense_reason_t sbc_dif_v1_verify(struct se_device *dev, struct se_dif_v1_tuple *sdt, const void *p, sector_t sector, unsigned int ei_lba) @@ -1162,9 +1271,9 @@ sbc_dif_verify_write(struct se_cmd *cmd, sector_t start, unsigned int sectors, } EXPORT_SYMBOL(sbc_dif_verify_write); -sense_reason_t -sbc_dif_verify_read(struct se_cmd *cmd, sector_t start, unsigned int sectors, - unsigned int ei_lba, struct scatterlist *sg, int sg_off) +static sense_reason_t +__sbc_dif_verify_read(struct se_cmd *cmd, sector_t start, unsigned int sectors, + unsigned int ei_lba, struct scatterlist *sg, int sg_off) { struct se_device *dev = cmd->se_dev; struct se_dif_v1_tuple *sdt; @@ -1217,8 +1326,31 @@ sbc_dif_verify_read(struct se_cmd *cmd, sector_t start, unsigned int sectors, kunmap_atomic(paddr); kunmap_atomic(daddr); } - sbc_dif_copy_prot(cmd, sectors, true, sg, sg_off); return 0; } + +sense_reason_t +sbc_dif_read_strip(struct se_cmd *cmd) +{ + struct se_device *dev = cmd->se_dev; + u32 sectors = cmd->prot_length / dev->prot_length; + + return __sbc_dif_verify_read(cmd, cmd->t_task_lba, sectors, 0, + cmd->t_prot_sg, 0); +} + +sense_reason_t +sbc_dif_verify_read(struct se_cmd *cmd, sector_t start, unsigned int sectors, + unsigned int ei_lba, struct scatterlist *sg, int sg_off) +{ + sense_reason_t rc; + + rc = __sbc_dif_verify_read(cmd, start, sectors, ei_lba, sg, sg_off); + if (rc) + return rc; + + sbc_dif_copy_prot(cmd, sectors, true, sg, sg_off); + return 0; +} EXPORT_SYMBOL(sbc_dif_verify_read); diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 3bebc71ea033..8653666612a8 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -71,6 +71,7 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) { struct se_lun *lun = cmd->se_lun; struct se_device *dev = cmd->se_dev; + struct se_session *sess = cmd->se_sess; /* Set RMB (removable media) for tape devices */ if (dev->transport->get_device_type(dev) == TYPE_TAPE) @@ -101,10 +102,13 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) if (dev->dev_attrib.emulate_3pc) buf[5] |= 0x8; /* - * Set Protection (PROTECT) bit when DIF has been enabled. + * Set Protection (PROTECT) bit when DIF has been enabled on the + * device, and the transport supports VERIFY + PASS. */ - if (dev->dev_attrib.pi_prot_type) - buf[5] |= 0x1; + if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { + if (dev->dev_attrib.pi_prot_type) + buf[5] |= 0x1; + } buf[7] = 0x2; /* CmdQue=1 */ @@ -473,16 +477,19 @@ static sense_reason_t spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) { struct se_device *dev = cmd->se_dev; + struct se_session *sess = cmd->se_sess; buf[3] = 0x3c; /* * Set GRD_CHK + REF_CHK for TYPE1 protection, or GRD_CHK * only for TYPE3 protection. */ - if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE1_PROT) - buf[4] = 0x5; - else if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE3_PROT) - buf[4] = 0x4; + if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { + if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE1_PROT) + buf[4] = 0x5; + else if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE3_PROT) + buf[4] = 0x4; + } /* Set HEADSUP, ORDSUP, SIMPSUP */ buf[5] = 0x07; @@ -762,7 +769,7 @@ out: return ret; } -static int spc_modesense_rwrecovery(struct se_device *dev, u8 pc, u8 *p) +static int spc_modesense_rwrecovery(struct se_cmd *cmd, u8 pc, u8 *p) { p[0] = 0x01; p[1] = 0x0a; @@ -775,8 +782,11 @@ out: return 12; } -static int spc_modesense_control(struct se_device *dev, u8 pc, u8 *p) +static int spc_modesense_control(struct se_cmd *cmd, u8 pc, u8 *p) { + struct se_device *dev = cmd->se_dev; + struct se_session *sess = cmd->se_sess; + p[0] = 0x0a; p[1] = 0x0a; @@ -868,8 +878,10 @@ static int spc_modesense_control(struct se_device *dev, u8 pc, u8 *p) * type, shall not modify the contents of the LOGICAL BLOCK REFERENCE * TAG field. */ - if (dev->dev_attrib.pi_prot_type) - p[5] |= 0x80; + if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { + if (dev->dev_attrib.pi_prot_type) + p[5] |= 0x80; + } p[8] = 0xff; p[9] = 0xff; @@ -879,8 +891,10 @@ out: return 12; } -static int spc_modesense_caching(struct se_device *dev, u8 pc, u8 *p) +static int spc_modesense_caching(struct se_cmd *cmd, u8 pc, u8 *p) { + struct se_device *dev = cmd->se_dev; + p[0] = 0x08; p[1] = 0x12; @@ -896,7 +910,7 @@ out: return 20; } -static int spc_modesense_informational_exceptions(struct se_device *dev, u8 pc, unsigned char *p) +static int spc_modesense_informational_exceptions(struct se_cmd *cmd, u8 pc, unsigned char *p) { p[0] = 0x1c; p[1] = 0x0a; @@ -912,7 +926,7 @@ out: static struct { uint8_t page; uint8_t subpage; - int (*emulate)(struct se_device *, u8, unsigned char *); + int (*emulate)(struct se_cmd *, u8, unsigned char *); } modesense_handlers[] = { { .page = 0x01, .subpage = 0x00, .emulate = spc_modesense_rwrecovery }, { .page = 0x08, .subpage = 0x00, .emulate = spc_modesense_caching }, @@ -1050,7 +1064,7 @@ static sense_reason_t spc_emulate_modesense(struct se_cmd *cmd) * the only two possibilities). */ if ((modesense_handlers[i].subpage & ~subpage) == 0) { - ret = modesense_handlers[i].emulate(dev, pc, &buf[length]); + ret = modesense_handlers[i].emulate(cmd, pc, &buf[length]); if (!ten && length + ret >= 255) break; length += ret; @@ -1063,7 +1077,7 @@ static sense_reason_t spc_emulate_modesense(struct se_cmd *cmd) for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) if (modesense_handlers[i].page == page && modesense_handlers[i].subpage == subpage) { - length += modesense_handlers[i].emulate(dev, pc, &buf[length]); + length += modesense_handlers[i].emulate(cmd, pc, &buf[length]); goto set_length; } @@ -1095,7 +1109,6 @@ set_length: static sense_reason_t spc_emulate_modeselect(struct se_cmd *cmd) { - struct se_device *dev = cmd->se_dev; char *cdb = cmd->t_task_cdb; bool ten = cdb[0] == MODE_SELECT_10; int off = ten ? 8 : 4; @@ -1131,7 +1144,7 @@ static sense_reason_t spc_emulate_modeselect(struct se_cmd *cmd) if (modesense_handlers[i].page == page && modesense_handlers[i].subpage == subpage) { memset(tbuf, 0, SE_MODE_PAGE_BUF); - length = modesense_handlers[i].emulate(dev, 0, tbuf); + length = modesense_handlers[i].emulate(cmd, 0, tbuf); goto check_contents; } diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c index 70c638f730af..f7cd95e8111a 100644 --- a/drivers/target/target_core_tmr.c +++ b/drivers/target/target_core_tmr.c @@ -87,14 +87,17 @@ static void core_tmr_handle_tas_abort( struct se_cmd *cmd, int tas) { + bool remove = true; /* * TASK ABORTED status (TAS) bit support */ if ((tmr_nacl && - (tmr_nacl == cmd->se_sess->se_node_acl)) || tas) + (tmr_nacl != cmd->se_sess->se_node_acl)) && tas) { + remove = false; transport_send_task_abort(cmd); + } - transport_cmd_finish_abort(cmd, 0); + transport_cmd_finish_abort(cmd, remove); } static int target_check_cdb_and_preempt(struct list_head *list, @@ -127,6 +130,11 @@ void core_tmr_abort_task( if (dev != se_cmd->se_dev) continue; + + /* skip se_cmd associated with tmr */ + if (tmr->task_cmd == se_cmd) + continue; + ref_tag = se_cmd->se_tfo->get_task_tag(se_cmd); if (tmr->ref_task_tag != ref_tag) continue; @@ -150,18 +158,9 @@ void core_tmr_abort_task( cancel_work_sync(&se_cmd->work); transport_wait_for_tasks(se_cmd); - /* - * Now send SAM_STAT_TASK_ABORTED status for the referenced - * se_cmd descriptor.. - */ - transport_send_task_abort(se_cmd); - /* - * Also deal with possible extra acknowledge reference.. - */ - if (se_cmd->se_cmd_flags & SCF_ACK_KREF) - target_put_sess_cmd(se_sess, se_cmd); target_put_sess_cmd(se_sess, se_cmd); + transport_cmd_finish_abort(se_cmd, true); printk("ABORT_TASK: Sending TMR_FUNCTION_COMPLETE for" " ref_tag: %d\n", ref_tag); diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 2956250b7225..d4b98690a736 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -235,7 +235,7 @@ void transport_subsystem_check_init(void) sub_api_initialized = 1; } -struct se_session *transport_init_session(void) +struct se_session *transport_init_session(enum target_prot_op sup_prot_ops) { struct se_session *se_sess; @@ -251,6 +251,7 @@ struct se_session *transport_init_session(void) INIT_LIST_HEAD(&se_sess->sess_wait_list); spin_lock_init(&se_sess->sess_cmd_lock); kref_init(&se_sess->sess_kref); + se_sess->sup_prot_ops = sup_prot_ops; return se_sess; } @@ -288,12 +289,13 @@ int transport_alloc_session_tags(struct se_session *se_sess, EXPORT_SYMBOL(transport_alloc_session_tags); struct se_session *transport_init_session_tags(unsigned int tag_num, - unsigned int tag_size) + unsigned int tag_size, + enum target_prot_op sup_prot_ops) { struct se_session *se_sess; int rc; - se_sess = transport_init_session(); + se_sess = transport_init_session(sup_prot_ops); if (IS_ERR(se_sess)) return se_sess; @@ -603,6 +605,15 @@ static void transport_lun_remove_cmd(struct se_cmd *cmd) void transport_cmd_finish_abort(struct se_cmd *cmd, int remove) { + if (cmd->se_cmd_flags & SCF_SE_LUN_CMD) + transport_lun_remove_cmd(cmd); + /* + * Allow the fabric driver to unmap any resources before + * releasing the descriptor via TFO->release_cmd() + */ + if (remove) + cmd->se_tfo->aborted_task(cmd); + if (transport_cmd_check_stop_to_fabric(cmd)) return; if (remove) @@ -1365,6 +1376,13 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess target_put_sess_cmd(se_sess, se_cmd); return 0; } + + rc = target_setup_cmd_from_cdb(se_cmd, cdb); + if (rc != 0) { + transport_generic_request_failure(se_cmd, rc); + return 0; + } + /* * Save pointers for SGLs containing protection information, * if present. @@ -1374,11 +1392,6 @@ int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess se_cmd->t_prot_nents = sgl_prot_count; } - rc = target_setup_cmd_from_cdb(se_cmd, cdb); - if (rc != 0) { - transport_generic_request_failure(se_cmd, rc); - return 0; - } /* * When a non zero sgl_count has been passed perform SGL passthrough * mapping for pre-allocated fabric memory instead of having target @@ -1754,6 +1767,15 @@ void target_execute_cmd(struct se_cmd *cmd) cmd->t_state = TRANSPORT_PROCESSING; cmd->transport_state |= CMD_T_ACTIVE|CMD_T_BUSY|CMD_T_SENT; spin_unlock_irq(&cmd->t_state_lock); + /* + * Perform WRITE_INSERT of PI using software emulation when backend + * device has PI enabled, if the transport has not already generated + * PI using hardware WRITE_INSERT offload. + */ + if (cmd->prot_op == TARGET_PROT_DOUT_INSERT) { + if (!(cmd->se_sess->sup_prot_ops & TARGET_PROT_DOUT_INSERT)) + sbc_dif_generate(cmd); + } if (target_handle_task_attr(cmd)) { spin_lock_irq(&cmd->t_state_lock); @@ -1883,6 +1905,21 @@ static void transport_handle_queue_full( schedule_work(&cmd->se_dev->qf_work_queue); } +static bool target_check_read_strip(struct se_cmd *cmd) +{ + sense_reason_t rc; + + if (!(cmd->se_sess->sup_prot_ops & TARGET_PROT_DIN_STRIP)) { + rc = sbc_dif_read_strip(cmd); + if (rc) { + cmd->pi_err = rc; + return true; + } + } + + return false; +} + static void target_complete_ok_work(struct work_struct *work) { struct se_cmd *cmd = container_of(work, struct se_cmd, work); @@ -1947,6 +1984,22 @@ static void target_complete_ok_work(struct work_struct *work) cmd->data_length; } spin_unlock(&cmd->se_lun->lun_sep_lock); + /* + * Perform READ_STRIP of PI using software emulation when + * backend had PI enabled, if the transport will not be + * performing hardware READ_STRIP offload. + */ + if (cmd->prot_op == TARGET_PROT_DIN_STRIP && + target_check_read_strip(cmd)) { + ret = transport_send_check_condition_and_sense(cmd, + cmd->pi_err, 0); + if (ret == -EAGAIN || ret == -ENOMEM) + goto queue_full; + + transport_lun_remove_cmd(cmd); + transport_cmd_check_stop_to_fabric(cmd); + return; + } trace_target_cmd_complete(cmd); ret = cmd->se_tfo->queue_data_in(cmd); @@ -2039,6 +2092,10 @@ static inline void transport_free_pages(struct se_cmd *cmd) transport_free_sgl(cmd->t_bidi_data_sg, cmd->t_bidi_data_nents); cmd->t_bidi_data_sg = NULL; cmd->t_bidi_data_nents = 0; + + transport_free_sgl(cmd->t_prot_sg, cmd->t_prot_nents); + cmd->t_prot_sg = NULL; + cmd->t_prot_nents = 0; } /** @@ -2202,6 +2259,14 @@ transport_generic_new_cmd(struct se_cmd *cmd) return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } + if (cmd->prot_op != TARGET_PROT_NORMAL) { + ret = target_alloc_sgl(&cmd->t_prot_sg, + &cmd->t_prot_nents, + cmd->prot_length, true); + if (ret < 0) + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + } + ret = target_alloc_sgl(&cmd->t_data_sg, &cmd->t_data_nents, cmd->data_length, zero_flag); if (ret < 0) @@ -2770,13 +2835,17 @@ int transport_check_aborted_status(struct se_cmd *cmd, int send_status) if (!(cmd->transport_state & CMD_T_ABORTED)) return 0; - if (!send_status || (cmd->se_cmd_flags & SCF_SENT_DELAYED_TAS)) + /* + * If cmd has been aborted but either no status is to be sent or it has + * already been sent, just return + */ + if (!send_status || !(cmd->se_cmd_flags & SCF_SEND_DELAYED_TAS)) return 1; pr_debug("Sending delayed SAM_STAT_TASK_ABORTED status for CDB: 0x%02x ITT: 0x%08x\n", cmd->t_task_cdb[0], cmd->se_tfo->get_task_tag(cmd)); - cmd->se_cmd_flags |= SCF_SENT_DELAYED_TAS; + cmd->se_cmd_flags &= ~SCF_SEND_DELAYED_TAS; cmd->scsi_status = SAM_STAT_TASK_ABORTED; trace_target_cmd_complete(cmd); cmd->se_tfo->queue_status(cmd); @@ -2790,7 +2859,7 @@ void transport_send_task_abort(struct se_cmd *cmd) unsigned long flags; spin_lock_irqsave(&cmd->t_state_lock, flags); - if (cmd->se_cmd_flags & (SCF_SENT_CHECK_CONDITION | SCF_SENT_DELAYED_TAS)) { + if (cmd->se_cmd_flags & (SCF_SENT_CHECK_CONDITION)) { spin_unlock_irqrestore(&cmd->t_state_lock, flags); return; } @@ -2805,6 +2874,7 @@ void transport_send_task_abort(struct se_cmd *cmd) if (cmd->data_direction == DMA_TO_DEVICE) { if (cmd->se_tfo->write_pending_status(cmd) != 0) { cmd->transport_state |= CMD_T_ABORTED; + cmd->se_cmd_flags |= SCF_SEND_DELAYED_TAS; smp_mb__after_atomic_inc(); return; } diff --git a/drivers/target/tcm_fc/tcm_fc.h b/drivers/target/tcm_fc/tcm_fc.h index 752863acecb8..a0bcfd3e7e7d 100644 --- a/drivers/target/tcm_fc/tcm_fc.h +++ b/drivers/target/tcm_fc/tcm_fc.h @@ -94,20 +94,19 @@ struct ft_lun { */ struct ft_tpg { u32 index; - struct ft_lport_acl *lport_acl; + struct ft_lport_wwn *lport_wwn; struct ft_tport *tport; /* active tport or NULL */ - struct list_head list; /* linkage in ft_lport_acl tpg_list */ struct list_head lun_list; /* head of LUNs */ struct se_portal_group se_tpg; struct workqueue_struct *workqueue; }; -struct ft_lport_acl { +struct ft_lport_wwn { u64 wwpn; char name[FT_NAMELEN]; - struct list_head list; - struct list_head tpg_list; - struct se_wwn fc_lport_wwn; + struct list_head ft_wwn_node; + struct ft_tpg *tpg; + struct se_wwn se_wwn; }; /* @@ -128,7 +127,6 @@ struct ft_cmd { u32 sg_cnt; /* No. of item in scatterlist */ }; -extern struct list_head ft_lport_list; extern struct mutex ft_lport_lock; extern struct fc4_prov ft_prov; extern struct target_fabric_configfs *ft_configfs; @@ -163,6 +161,7 @@ int ft_write_pending_status(struct se_cmd *); u32 ft_get_task_tag(struct se_cmd *); int ft_get_cmd_state(struct se_cmd *); void ft_queue_tm_resp(struct se_cmd *); +void ft_aborted_task(struct se_cmd *); /* * other internal functions. diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c index 8b2c1aaf81de..01cf37f212c3 100644 --- a/drivers/target/tcm_fc/tfc_cmd.c +++ b/drivers/target/tcm_fc/tfc_cmd.c @@ -426,6 +426,11 @@ void ft_queue_tm_resp(struct se_cmd *se_cmd) ft_send_resp_code(cmd, code); } +void ft_aborted_task(struct se_cmd *se_cmd) +{ + return; +} + static void ft_send_work(struct work_struct *work); /* diff --git a/drivers/target/tcm_fc/tfc_conf.c b/drivers/target/tcm_fc/tfc_conf.c index e879da81ad93..efdcb9663a1a 100644 --- a/drivers/target/tcm_fc/tfc_conf.c +++ b/drivers/target/tcm_fc/tfc_conf.c @@ -50,7 +50,7 @@ struct target_fabric_configfs *ft_configfs; -LIST_HEAD(ft_lport_list); +static LIST_HEAD(ft_wwn_list); DEFINE_MUTEX(ft_lport_lock); unsigned int ft_debug_logging; @@ -298,7 +298,7 @@ static struct se_portal_group *ft_add_tpg( struct config_group *group, const char *name) { - struct ft_lport_acl *lacl; + struct ft_lport_wwn *ft_wwn; struct ft_tpg *tpg; struct workqueue_struct *wq; unsigned long index; @@ -318,12 +318,17 @@ static struct se_portal_group *ft_add_tpg( if (index > UINT_MAX) return NULL; - lacl = container_of(wwn, struct ft_lport_acl, fc_lport_wwn); + if ((index != 1)) { + pr_err("Error, a single TPG=1 is used for HW port mappings\n"); + return ERR_PTR(-ENOSYS); + } + + ft_wwn = container_of(wwn, struct ft_lport_wwn, se_wwn); tpg = kzalloc(sizeof(*tpg), GFP_KERNEL); if (!tpg) return NULL; tpg->index = index; - tpg->lport_acl = lacl; + tpg->lport_wwn = ft_wwn; INIT_LIST_HEAD(&tpg->lun_list); wq = alloc_workqueue("tcm_fc", 0, 1); @@ -342,7 +347,7 @@ static struct se_portal_group *ft_add_tpg( tpg->workqueue = wq; mutex_lock(&ft_lport_lock); - list_add_tail(&tpg->list, &lacl->tpg_list); + ft_wwn->tpg = tpg; mutex_unlock(&ft_lport_lock); return &tpg->se_tpg; @@ -351,6 +356,7 @@ static struct se_portal_group *ft_add_tpg( static void ft_del_tpg(struct se_portal_group *se_tpg) { struct ft_tpg *tpg = container_of(se_tpg, struct ft_tpg, se_tpg); + struct ft_lport_wwn *ft_wwn = tpg->lport_wwn; pr_debug("del tpg %s\n", config_item_name(&tpg->se_tpg.tpg_group.cg_item)); @@ -361,7 +367,7 @@ static void ft_del_tpg(struct se_portal_group *se_tpg) synchronize_rcu(); mutex_lock(&ft_lport_lock); - list_del(&tpg->list); + ft_wwn->tpg = NULL; if (tpg->tport) { tpg->tport->tpg = NULL; tpg->tport = NULL; @@ -380,15 +386,11 @@ static void ft_del_tpg(struct se_portal_group *se_tpg) */ struct ft_tpg *ft_lport_find_tpg(struct fc_lport *lport) { - struct ft_lport_acl *lacl; - struct ft_tpg *tpg; + struct ft_lport_wwn *ft_wwn; - list_for_each_entry(lacl, &ft_lport_list, list) { - if (lacl->wwpn == lport->wwpn) { - list_for_each_entry(tpg, &lacl->tpg_list, list) - return tpg; /* XXX for now return first entry */ - return NULL; - } + list_for_each_entry(ft_wwn, &ft_wwn_list, ft_wwn_node) { + if (ft_wwn->wwpn == lport->wwpn) + return ft_wwn->tpg; } return NULL; } @@ -401,50 +403,49 @@ struct ft_tpg *ft_lport_find_tpg(struct fc_lport *lport) * Add lport to allowed config. * The name is the WWPN in lower-case ASCII, colon-separated bytes. */ -static struct se_wwn *ft_add_lport( +static struct se_wwn *ft_add_wwn( struct target_fabric_configfs *tf, struct config_group *group, const char *name) { - struct ft_lport_acl *lacl; - struct ft_lport_acl *old_lacl; + struct ft_lport_wwn *ft_wwn; + struct ft_lport_wwn *old_ft_wwn; u64 wwpn; - pr_debug("add lport %s\n", name); + pr_debug("add wwn %s\n", name); if (ft_parse_wwn(name, &wwpn, 1) < 0) return NULL; - lacl = kzalloc(sizeof(*lacl), GFP_KERNEL); - if (!lacl) + ft_wwn = kzalloc(sizeof(*ft_wwn), GFP_KERNEL); + if (!ft_wwn) return NULL; - lacl->wwpn = wwpn; - INIT_LIST_HEAD(&lacl->tpg_list); + ft_wwn->wwpn = wwpn; mutex_lock(&ft_lport_lock); - list_for_each_entry(old_lacl, &ft_lport_list, list) { - if (old_lacl->wwpn == wwpn) { + list_for_each_entry(old_ft_wwn, &ft_wwn_list, ft_wwn_node) { + if (old_ft_wwn->wwpn == wwpn) { mutex_unlock(&ft_lport_lock); - kfree(lacl); + kfree(ft_wwn); return NULL; } } - list_add_tail(&lacl->list, &ft_lport_list); - ft_format_wwn(lacl->name, sizeof(lacl->name), wwpn); + list_add_tail(&ft_wwn->ft_wwn_node, &ft_wwn_list); + ft_format_wwn(ft_wwn->name, sizeof(ft_wwn->name), wwpn); mutex_unlock(&ft_lport_lock); - return &lacl->fc_lport_wwn; + return &ft_wwn->se_wwn; } -static void ft_del_lport(struct se_wwn *wwn) +static void ft_del_wwn(struct se_wwn *wwn) { - struct ft_lport_acl *lacl = container_of(wwn, - struct ft_lport_acl, fc_lport_wwn); + struct ft_lport_wwn *ft_wwn = container_of(wwn, + struct ft_lport_wwn, se_wwn); - pr_debug("del lport %s\n", lacl->name); + pr_debug("del wwn %s\n", ft_wwn->name); mutex_lock(&ft_lport_lock); - list_del(&lacl->list); + list_del(&ft_wwn->ft_wwn_node); mutex_unlock(&ft_lport_lock); - kfree(lacl); + kfree(ft_wwn); } static ssize_t ft_wwn_show_attr_version( @@ -471,7 +472,7 @@ static char *ft_get_fabric_wwn(struct se_portal_group *se_tpg) { struct ft_tpg *tpg = se_tpg->se_tpg_fabric_ptr; - return tpg->lport_acl->name; + return tpg->lport_wwn->name; } static u16 ft_get_tag(struct se_portal_group *se_tpg) @@ -536,12 +537,13 @@ static struct target_core_fabric_ops ft_fabric_ops = { .queue_data_in = ft_queue_data_in, .queue_status = ft_queue_status, .queue_tm_rsp = ft_queue_tm_resp, + .aborted_task = ft_aborted_task, /* * Setup function pointers for generic logic in * target_core_fabric_configfs.c */ - .fabric_make_wwn = &ft_add_lport, - .fabric_drop_wwn = &ft_del_lport, + .fabric_make_wwn = &ft_add_wwn, + .fabric_drop_wwn = &ft_del_wwn, .fabric_make_tpg = &ft_add_tpg, .fabric_drop_tpg = &ft_del_tpg, .fabric_post_link = NULL, diff --git a/drivers/target/tcm_fc/tfc_sess.c b/drivers/target/tcm_fc/tfc_sess.c index ae52c08dad09..21ce50880c79 100644 --- a/drivers/target/tcm_fc/tfc_sess.c +++ b/drivers/target/tcm_fc/tfc_sess.c @@ -51,7 +51,7 @@ static void ft_sess_delete_all(struct ft_tport *); * Lookup or allocate target local port. * Caller holds ft_lport_lock. */ -static struct ft_tport *ft_tport_create(struct fc_lport *lport) +static struct ft_tport *ft_tport_get(struct fc_lport *lport) { struct ft_tpg *tpg; struct ft_tport *tport; @@ -68,6 +68,7 @@ static struct ft_tport *ft_tport_create(struct fc_lport *lport) if (tport) { tport->tpg = tpg; + tpg->tport = tport; return tport; } @@ -114,7 +115,7 @@ static void ft_tport_delete(struct ft_tport *tport) void ft_lport_add(struct fc_lport *lport, void *arg) { mutex_lock(&ft_lport_lock); - ft_tport_create(lport); + ft_tport_get(lport); mutex_unlock(&ft_lport_lock); } @@ -211,7 +212,8 @@ static struct ft_sess *ft_sess_create(struct ft_tport *tport, u32 port_id, return NULL; sess->se_sess = transport_init_session_tags(TCM_FC_DEFAULT_TAGS, - sizeof(struct ft_cmd)); + sizeof(struct ft_cmd), + TARGET_PROT_NORMAL); if (IS_ERR(sess->se_sess)) { kfree(sess); return NULL; @@ -350,7 +352,7 @@ static int ft_prli_locked(struct fc_rport_priv *rdata, u32 spp_len, struct ft_node_acl *acl; u32 fcp_parm; - tport = ft_tport_create(rdata->local_port); + tport = ft_tport_get(rdata->local_port); if (!tport) goto not_target; /* not a target for this local port */ diff --git a/drivers/usb/gadget/tcm_usb_gadget.c b/drivers/usb/gadget/tcm_usb_gadget.c index 460c266b8e24..f058c0368d61 100644 --- a/drivers/usb/gadget/tcm_usb_gadget.c +++ b/drivers/usb/gadget/tcm_usb_gadget.c @@ -1471,6 +1471,11 @@ static void usbg_queue_tm_rsp(struct se_cmd *se_cmd) { } +static void usbg_aborted_task(struct se_cmd *se_cmd) +{ + return; +} + static const char *usbg_check_wwn(const char *name) { const char *n; @@ -1726,7 +1731,7 @@ static int tcm_usbg_make_nexus(struct usbg_tpg *tpg, char *name) pr_err("Unable to allocate struct tcm_vhost_nexus\n"); goto err_unlock; } - tv_nexus->tvn_se_sess = transport_init_session(); + tv_nexus->tvn_se_sess = transport_init_session(TARGET_PROT_NORMAL); if (IS_ERR(tv_nexus->tvn_se_sess)) goto err_free; @@ -1897,6 +1902,7 @@ static struct target_core_fabric_ops usbg_ops = { .queue_data_in = usbg_send_read_response, .queue_status = usbg_send_status_response, .queue_tm_rsp = usbg_queue_tm_rsp, + .aborted_task = usbg_aborted_task, .check_stop_free = usbg_check_stop_free, .fabric_make_wwn = usbg_make_tport, diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index e48d4a672580..cf50ce93975b 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -539,6 +539,11 @@ static void tcm_vhost_queue_tm_rsp(struct se_cmd *se_cmd) return; } +static void tcm_vhost_aborted_task(struct se_cmd *se_cmd) +{ + return; +} + static void tcm_vhost_free_evt(struct vhost_scsi *vs, struct tcm_vhost_evt *evt) { vs->vs_events_nr--; @@ -1740,7 +1745,8 @@ static int tcm_vhost_make_nexus(struct tcm_vhost_tpg *tpg, */ tv_nexus->tvn_se_sess = transport_init_session_tags( TCM_VHOST_DEFAULT_TAGS, - sizeof(struct tcm_vhost_cmd)); + sizeof(struct tcm_vhost_cmd), + TARGET_PROT_NORMAL); if (IS_ERR(tv_nexus->tvn_se_sess)) { mutex_unlock(&tpg->tv_tpg_mutex); kfree(tv_nexus); @@ -2131,6 +2137,7 @@ static struct target_core_fabric_ops tcm_vhost_ops = { .queue_data_in = tcm_vhost_queue_data_in, .queue_status = tcm_vhost_queue_status, .queue_tm_rsp = tcm_vhost_queue_tm_rsp, + .aborted_task = tcm_vhost_aborted_task, /* * Setup callers for generic logic in target_core_fabric_configfs.c */ diff --git a/include/target/iscsi/iscsi_transport.h b/include/target/iscsi/iscsi_transport.h index 4483fadfa68d..33b487b5da92 100644 --- a/include/target/iscsi/iscsi_transport.h +++ b/include/target/iscsi/iscsi_transport.h @@ -21,6 +21,8 @@ struct iscsit_transport { int (*iscsit_get_dataout)(struct iscsi_conn *, struct iscsi_cmd *, bool); int (*iscsit_queue_data_in)(struct iscsi_conn *, struct iscsi_cmd *); int (*iscsit_queue_status)(struct iscsi_conn *, struct iscsi_cmd *); + void (*iscsit_aborted_task)(struct iscsi_conn *, struct iscsi_cmd *); + enum target_prot_op (*iscsit_get_sup_prot_ops)(struct iscsi_conn *); }; static inline void *iscsit_priv_cmd(struct iscsi_cmd *cmd) diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h index 7020e33e742e..3a1c1eea1fff 100644 --- a/include/target/target_core_backend.h +++ b/include/target/target_core_backend.h @@ -73,10 +73,12 @@ sense_reason_t sbc_execute_unmap(struct se_cmd *cmd, sense_reason_t (*do_unmap_fn)(struct se_cmd *cmd, void *priv, sector_t lba, sector_t nolb), void *priv); +void sbc_dif_generate(struct se_cmd *); sense_reason_t sbc_dif_verify_write(struct se_cmd *, sector_t, unsigned int, unsigned int, struct scatterlist *, int); sense_reason_t sbc_dif_verify_read(struct se_cmd *, sector_t, unsigned int, unsigned int, struct scatterlist *, int); +sense_reason_t sbc_dif_read_strip(struct se_cmd *); void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *); int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *); diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 1772fadcff62..9ec9864ecf38 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -162,7 +162,7 @@ enum se_cmd_flags_table { SCF_SENT_CHECK_CONDITION = 0x00000800, SCF_OVERFLOW_BIT = 0x00001000, SCF_UNDERFLOW_BIT = 0x00002000, - SCF_SENT_DELAYED_TAS = 0x00004000, + SCF_SEND_DELAYED_TAS = 0x00004000, SCF_ALUA_NON_OPTIMIZED = 0x00008000, SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, SCF_ACK_KREF = 0x00040000, @@ -442,19 +442,18 @@ struct se_tmr_req { }; enum target_prot_op { - TARGET_PROT_NORMAL = 0, - TARGET_PROT_DIN_INSERT, - TARGET_PROT_DOUT_INSERT, - TARGET_PROT_DIN_STRIP, - TARGET_PROT_DOUT_STRIP, - TARGET_PROT_DIN_PASS, - TARGET_PROT_DOUT_PASS, + TARGET_PROT_NORMAL = 0, + TARGET_PROT_DIN_INSERT = (1 << 0), + TARGET_PROT_DOUT_INSERT = (1 << 1), + TARGET_PROT_DIN_STRIP = (1 << 2), + TARGET_PROT_DOUT_STRIP = (1 << 3), + TARGET_PROT_DIN_PASS = (1 << 4), + TARGET_PROT_DOUT_PASS = (1 << 5), }; -enum target_prot_ho { - PROT_SEPERATED, - PROT_INTERLEAVED, -}; +#define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \ + TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \ + TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS enum target_prot_type { TARGET_DIF_TYPE0_PROT, @@ -463,6 +462,12 @@ enum target_prot_type { TARGET_DIF_TYPE3_PROT, }; +enum target_core_dif_check { + TARGET_DIF_CHECK_GUARD = 0x1 << 0, + TARGET_DIF_CHECK_APPTAG = 0x1 << 1, + TARGET_DIF_CHECK_REFTAG = 0x1 << 2, +}; + struct se_dif_v1_tuple { __be16 guard_tag; __be16 app_tag; @@ -556,13 +561,14 @@ struct se_cmd { /* DIF related members */ enum target_prot_op prot_op; enum target_prot_type prot_type; + u8 prot_checks; u32 prot_length; u32 reftag_seed; struct scatterlist *t_prot_sg; unsigned int t_prot_nents; - enum target_prot_ho prot_handover; sense_reason_t pi_err; sector_t bad_sector; + bool prot_pto; }; struct se_ua { @@ -603,6 +609,7 @@ struct se_node_acl { struct se_session { unsigned sess_tearing_down:1; u64 sess_bin_isid; + enum target_prot_op sup_prot_ops; struct se_node_acl *se_node_acl; struct se_portal_group *se_tpg; void *fabric_sess_ptr; diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h index 0218d689b3d7..22a4e98eec80 100644 --- a/include/target/target_core_fabric.h +++ b/include/target/target_core_fabric.h @@ -62,6 +62,7 @@ struct target_core_fabric_ops { int (*queue_data_in)(struct se_cmd *); int (*queue_status)(struct se_cmd *); void (*queue_tm_rsp)(struct se_cmd *); + void (*aborted_task)(struct se_cmd *); /* * fabric module calls for target_core_fabric_configfs.c */ @@ -83,10 +84,11 @@ struct target_core_fabric_ops { void (*fabric_drop_nodeacl)(struct se_node_acl *); }; -struct se_session *transport_init_session(void); +struct se_session *transport_init_session(enum target_prot_op); int transport_alloc_session_tags(struct se_session *, unsigned int, unsigned int); -struct se_session *transport_init_session_tags(unsigned int, unsigned int); +struct se_session *transport_init_session_tags(unsigned int, unsigned int, + enum target_prot_op); void __transport_register_session(struct se_portal_group *, struct se_node_acl *, struct se_session *, void *); void transport_register_session(struct se_portal_group *, |