diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-19 18:02:22 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-19 18:02:22 -0800 |
| commit | ed55635e2e4df3169f21ae4047004b7235de956e (patch) | |
| tree | 59483776aa04d2b87023059f8a84c5c08d15373f | |
| parent | 5be95b7e24bde4d93ff1bff5911b303043753168 (diff) | |
| parent | ae450e246e8540300699480a3780a420a028b73f (diff) | |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target fixes from Nicholas Bellinger:
"The highlights this merge window include:
- Allow target fabric drivers to function as built-in. (Roland)
- Fix tcm_loop multi-TPG endpoint nexus bug. (Hannes)
- Move per device config_item_type into se_subsystem_api, allowing
configfs attributes to be defined at module_init time. (Jerome +
nab)
- Convert existing IBLOCK/FILEIO/RAMDISK/PSCSI/TCMU drivers to use
external configfs attributes. (nab)
- A number of iser-target fixes related to active session + network
portal shutdown stability during extended stress testing. (Sagi +
Slava)
- Dynamic allocation of T10-PI contexts for iser-target, fixing a
potentially bogus iscsi_np->tpg_np pointer reference in >= v3.14
code. (Sagi)
- iser-target performance + scalability improvements. (Sagi)
- Fixes for SPC-4 Persistent Reservation AllRegistrants spec
compliance. (Ilias + James + nab)
- Avoid potential short kern_sendmsg() in iscsi-target for now until
Al's conversion to use msghdr iteration is merged post -rc1.
(Viro)
Also, Sagi has requested a number of iser-target patches (9) that
address stability issues he's encountered during extended stress
testing be considered for v3.10.y + v3.14.y code. Given the amount of
LOC involved, it will certainly require extra backporting effort.
Apologies in advance to Greg-KH & Co on this. Sagi and I will be
working post-merge to ensure they each get applied correctly"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (53 commits)
target: Allow AllRegistrants to re-RESERVE existing reservation
uapi/linux/target_core_user.h: fix headers_install.sh badness
iscsi-target: Fail connection on short sendmsg writes
iscsi-target: nullify session in failed login sequence
target: Avoid dropping AllRegistrants reservation during unregister
target: Fix R_HOLDER bit usage for AllRegistrants
iscsi-target: Drop left-over bogus iscsi_np->tpg_np
iser-target: Fix wc->wr_id cast warning
iser-target: Remove code duplication
iser-target: Adjust log levels and prettify some prints
iser-target: Use debug_level parameter to control logging level
iser-target: Fix logout sequence
iser-target: Don't wait for session commands from completion context
iser-target: Reduce CQ lock contention by batch polling
iser-target: Introduce isert_poll_budget
iser-target: Remove an atomic operation from the IO path
iser-target: Remove redundant call to isert_conn_terminate
iser-target: Use single CQ for TX and RX
iser-target: Centralize completion elements to a context
iser-target: Cast wr_id with uintptr_t instead of unsinged long
...
23 files changed, 1511 insertions, 1238 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index 10641b7816f4..dafb3c531f96 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -22,7 +22,6 @@ #include <linux/socket.h> #include <linux/in.h> #include <linux/in6.h> -#include <linux/llist.h> #include <rdma/ib_verbs.h> #include <rdma/rdma_cm.h> #include <target/target_core_base.h> @@ -36,11 +35,17 @@ #define ISERT_MAX_CONN 8 #define ISER_MAX_RX_CQ_LEN (ISERT_QP_MAX_RECV_DTOS * ISERT_MAX_CONN) #define ISER_MAX_TX_CQ_LEN (ISERT_QP_MAX_REQ_DTOS * ISERT_MAX_CONN) +#define ISER_MAX_CQ_LEN (ISER_MAX_RX_CQ_LEN + ISER_MAX_TX_CQ_LEN + \ + ISERT_MAX_CONN) + +int isert_debug_level = 0; +module_param_named(debug_level, isert_debug_level, int, 0644); +MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0 (default:0)"); static DEFINE_MUTEX(device_list_mutex); static LIST_HEAD(device_list); -static struct workqueue_struct *isert_rx_wq; static struct workqueue_struct *isert_comp_wq; +static struct workqueue_struct *isert_release_wq; static void isert_unmap_cmd(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn); @@ -54,19 +59,32 @@ 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 int +isert_rdma_post_recvl(struct isert_conn *isert_conn); +static int +isert_rdma_accept(struct isert_conn *isert_conn); +struct rdma_cm_id *isert_setup_id(struct isert_np *isert_np); + +static inline bool +isert_prot_cmd(struct isert_conn *conn, struct se_cmd *cmd) +{ + return (conn->pi_support && + cmd->prot_op != TARGET_PROT_NORMAL); +} + static void isert_qp_event_callback(struct ib_event *e, void *context) { struct isert_conn *isert_conn = (struct isert_conn *)context; - pr_err("isert_qp_event_callback event: %d\n", e->event); + isert_err("conn %p event: %d\n", isert_conn, e->event); switch (e->event) { case IB_EVENT_COMM_EST: rdma_notify(isert_conn->conn_cm_id, IB_EVENT_COMM_EST); break; case IB_EVENT_QP_LAST_WQE_REACHED: - pr_warn("Reached TX IB_EVENT_QP_LAST_WQE_REACHED:\n"); + isert_warn("Reached TX IB_EVENT_QP_LAST_WQE_REACHED\n"); break; default: break; @@ -80,39 +98,41 @@ isert_query_device(struct ib_device *ib_dev, struct ib_device_attr *devattr) ret = ib_query_device(ib_dev, devattr); if (ret) { - pr_err("ib_query_device() failed: %d\n", ret); + isert_err("ib_query_device() failed: %d\n", ret); return ret; } - pr_debug("devattr->max_sge: %d\n", devattr->max_sge); - pr_debug("devattr->max_sge_rd: %d\n", devattr->max_sge_rd); + isert_dbg("devattr->max_sge: %d\n", devattr->max_sge); + isert_dbg("devattr->max_sge_rd: %d\n", devattr->max_sge_rd); return 0; } static int -isert_conn_setup_qp(struct isert_conn *isert_conn, struct rdma_cm_id *cma_id, - u8 protection) +isert_conn_setup_qp(struct isert_conn *isert_conn, struct rdma_cm_id *cma_id) { struct isert_device *device = isert_conn->conn_device; struct ib_qp_init_attr attr; - int ret, index, min_index = 0; + struct isert_comp *comp; + int ret, i, min = 0; mutex_lock(&device_list_mutex); - for (index = 0; index < device->cqs_used; index++) - if (device->cq_active_qps[index] < - device->cq_active_qps[min_index]) - min_index = index; - device->cq_active_qps[min_index]++; - pr_debug("isert_conn_setup_qp: Using min_index: %d\n", min_index); + for (i = 0; i < device->comps_used; i++) + if (device->comps[i].active_qps < + device->comps[min].active_qps) + min = i; + comp = &device->comps[min]; + comp->active_qps++; + isert_info("conn %p, using comp %p min_index: %d\n", + isert_conn, comp, min); mutex_unlock(&device_list_mutex); memset(&attr, 0, sizeof(struct ib_qp_init_attr)); attr.event_handler = isert_qp_event_callback; attr.qp_context = isert_conn; - attr.send_cq = device->dev_tx_cq[min_index]; - attr.recv_cq = device->dev_rx_cq[min_index]; + attr.send_cq = comp->cq; + attr.recv_cq = comp->cq; attr.cap.max_send_wr = ISERT_QP_MAX_REQ_DTOS; - attr.cap.max_recv_wr = ISERT_QP_MAX_RECV_DTOS; + attr.cap.max_recv_wr = ISERT_QP_MAX_RECV_DTOS + 1; /* * FIXME: Use devattr.max_sge - 2 for max_send_sge as * work-around for RDMA_READs with ConnectX-2. @@ -126,29 +146,29 @@ 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) + if (device->pi_capable) attr.create_flags |= IB_QP_CREATE_SIGNATURE_EN; - pr_debug("isert_conn_setup_qp cma_id->device: %p\n", - cma_id->device); - pr_debug("isert_conn_setup_qp conn_pd->device: %p\n", - isert_conn->conn_pd->device); - ret = rdma_create_qp(cma_id, isert_conn->conn_pd, &attr); if (ret) { - pr_err("rdma_create_qp failed for cma_id %d\n", ret); - return ret; + isert_err("rdma_create_qp failed for cma_id %d\n", ret); + goto err; } isert_conn->conn_qp = cma_id->qp; - pr_debug("rdma_create_qp() returned success >>>>>>>>>>>>>>>>>>>>>>>>>.\n"); return 0; +err: + mutex_lock(&device_list_mutex); + comp->active_qps--; + mutex_unlock(&device_list_mutex); + + return ret; } static void isert_cq_event_callback(struct ib_event *e, void *context) { - pr_debug("isert_cq_event_callback event: %d\n", e->event); + isert_dbg("event: %d\n", e->event); } static int @@ -182,6 +202,7 @@ isert_alloc_rx_descriptors(struct isert_conn *isert_conn) } isert_conn->conn_rx_desc_head = 0; + return 0; dma_map_fail: @@ -193,6 +214,8 @@ dma_map_fail: kfree(isert_conn->conn_rx_descs); isert_conn->conn_rx_descs = NULL; fail: + isert_err("conn %p failed to allocate rx descriptors\n", isert_conn); + return -ENOMEM; } @@ -216,27 +239,23 @@ isert_free_rx_descriptors(struct isert_conn *isert_conn) isert_conn->conn_rx_descs = NULL; } -static void isert_cq_tx_work(struct work_struct *); -static void isert_cq_tx_callback(struct ib_cq *, void *); -static void isert_cq_rx_work(struct work_struct *); -static void isert_cq_rx_callback(struct ib_cq *, void *); +static void isert_cq_work(struct work_struct *); +static void isert_cq_callback(struct ib_cq *, void *); static int isert_create_device_ib_res(struct isert_device *device) { struct ib_device *ib_dev = device->ib_device; - struct isert_cq_desc *cq_desc; struct ib_device_attr *dev_attr; - int ret = 0, i, j; - int max_rx_cqe, max_tx_cqe; + int ret = 0, i; + int max_cqe; dev_attr = &device->dev_attr; ret = isert_query_device(ib_dev, dev_attr); if (ret) return ret; - max_rx_cqe = min(ISER_MAX_RX_CQ_LEN, dev_attr->max_cqe); - max_tx_cqe = min(ISER_MAX_TX_CQ_LEN, dev_attr->max_cqe); + max_cqe = min(ISER_MAX_CQ_LEN, dev_attr->max_cqe); /* asign function handlers */ if (dev_attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS && @@ -254,55 +273,38 @@ isert_create_device_ib_res(struct isert_device *device) 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 pi_capable %d\n", - device->cqs_used, device->ib_device->name, - 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) { - pr_err("Unable to allocate device->cq_desc\n"); + device->comps_used = min(ISERT_MAX_CQ, min_t(int, num_online_cpus(), + device->ib_device->num_comp_vectors)); + isert_info("Using %d CQs, %s supports %d vectors support " + "Fast registration %d pi_capable %d\n", + device->comps_used, device->ib_device->name, + device->ib_device->num_comp_vectors, device->use_fastreg, + device->pi_capable); + + device->comps = kcalloc(device->comps_used, sizeof(struct isert_comp), + GFP_KERNEL); + if (!device->comps) { + isert_err("Unable to allocate completion contexts\n"); return -ENOMEM; } - cq_desc = device->cq_desc; - - for (i = 0; i < device->cqs_used; i++) { - cq_desc[i].device = device; - cq_desc[i].cq_index = i; - - INIT_WORK(&cq_desc[i].cq_rx_work, isert_cq_rx_work); - device->dev_rx_cq[i] = ib_create_cq(device->ib_device, - isert_cq_rx_callback, - isert_cq_event_callback, - (void *)&cq_desc[i], - max_rx_cqe, i); - if (IS_ERR(device->dev_rx_cq[i])) { - ret = PTR_ERR(device->dev_rx_cq[i]); - device->dev_rx_cq[i] = NULL; - goto out_cq; - } - INIT_WORK(&cq_desc[i].cq_tx_work, isert_cq_tx_work); - device->dev_tx_cq[i] = ib_create_cq(device->ib_device, - isert_cq_tx_callback, - isert_cq_event_callback, - (void *)&cq_desc[i], - max_tx_cqe, i); - if (IS_ERR(device->dev_tx_cq[i])) { - ret = PTR_ERR(device->dev_tx_cq[i]); - device->dev_tx_cq[i] = NULL; - goto out_cq; - } + for (i = 0; i < device->comps_used; i++) { + struct isert_comp *comp = &device->comps[i]; - ret = ib_req_notify_cq(device->dev_rx_cq[i], IB_CQ_NEXT_COMP); - if (ret) + comp->device = device; + INIT_WORK(&comp->work, isert_cq_work); + comp->cq = ib_create_cq(device->ib_device, + isert_cq_callback, + isert_cq_event_callback, + (void *)comp, + max_cqe, i); + if (IS_ERR(comp->cq)) { + ret = PTR_ERR(comp->cq); + comp->cq = NULL; goto out_cq; + } - ret = ib_req_notify_cq(device->dev_tx_cq[i], IB_CQ_NEXT_COMP); + ret = ib_req_notify_cq(comp->cq, IB_CQ_NEXT_COMP); if (ret) goto out_cq; } @@ -310,19 +312,15 @@ isert_create_device_ib_res(struct isert_device *device) return 0; out_cq: - for (j = 0; j < i; j++) { - cq_desc = &device->cq_desc[j]; + for (i = 0; i < device->comps_used; i++) { + struct isert_comp *comp = &device->comps[i]; - if (device->dev_rx_cq[j]) { - cancel_work_sync(&cq_desc->cq_rx_work); - ib_destroy_cq(device->dev_rx_cq[j]); - } - if (device->dev_tx_cq[j]) { - cancel_work_sync(&cq_desc->cq_tx_work); - ib_destroy_cq(device->dev_tx_cq[j]); + if (comp->cq) { + cancel_work_sync(&comp->work); + ib_destroy_cq(comp->cq); } } - kfree(device->cq_desc); + kfree(device->comps); return ret; } @@ -330,21 +328,18 @@ out_cq: static void isert_free_device_ib_res(struct isert_device *device) { - struct isert_cq_desc *cq_desc; int i; - for (i = 0; i < device->cqs_used; i++) { - cq_desc = &device->cq_desc[i]; + isert_info("device %p\n", device); - cancel_work_sync(&cq_desc->cq_rx_work); - cancel_work_sync(&cq_desc->cq_tx_work); - ib_destroy_cq(device->dev_rx_cq[i]); - ib_destroy_cq(device->dev_tx_cq[i]); - device->dev_rx_cq[i] = NULL; - device->dev_tx_cq[i] = NULL; - } + for (i = 0; i < device->comps_used; i++) { + struct isert_comp *comp = &device->comps[i]; - kfree(device->cq_desc); + cancel_work_sync(&comp->work); + ib_destroy_cq(comp->cq); + comp->cq = NULL; + } + kfree(device->comps); } static void @@ -352,6 +347,7 @@ isert_device_try_release(struct isert_device *device) { mutex_lock(&device_list_mutex); device->refcount--; + isert_info("device %p refcount %d\n", device, device->refcount); if (!device->refcount) { isert_free_device_ib_res(device); list_del(&device->dev_node); @@ -370,6 +366,8 @@ isert_device_find_by_ib_dev(struct rdma_cm_id *cma_id) list_for_each_entry(device, &device_list, dev_node) { if (device->ib_device->node_guid == cma_id->device->node_guid) { device->refcount++; + isert_info("Found iser device %p refcount %d\n", + device, device->refcount); mutex_unlock(&device_list_mutex); return device; } @@ -393,6 +391,8 @@ isert_device_find_by_ib_dev(struct rdma_cm_id *cma_id) device->refcount++; list_add_tail(&device->dev_node, &device_list); + isert_info("Created a new iser device %p refcount %d\n", + device, device->refcount); mutex_unlock(&device_list_mutex); return device; @@ -407,7 +407,7 @@ isert_conn_free_fastreg_pool(struct isert_conn *isert_conn) if (list_empty(&isert_conn->conn_fr_pool)) return; - pr_debug("Freeing conn %p fastreg pool", isert_conn); + isert_info("Freeing conn %p fastreg pool", isert_conn); list_for_each_entry_safe(fr_desc, tmp, &isert_conn->conn_fr_pool, list) { @@ -425,87 +425,97 @@ isert_conn_free_fastreg_pool(struct isert_conn *isert_conn) } if (i < isert_conn->conn_fr_pool_size) - pr_warn("Pool still has %d regions registered\n", + isert_warn("Pool still has %d regions registered\n", isert_conn->conn_fr_pool_size - i); } static int +isert_create_pi_ctx(struct fast_reg_descriptor *desc, + struct ib_device *device, + struct ib_pd *pd) +{ + struct ib_mr_init_attr mr_init_attr; + struct pi_context *pi_ctx; + int ret; + + pi_ctx = kzalloc(sizeof(*desc->pi_ctx), GFP_KERNEL); + if (!pi_ctx) { + isert_err("Failed to allocate pi context\n"); + return -ENOMEM; + } + + pi_ctx->prot_frpl = ib_alloc_fast_reg_page_list(device, + ISCSI_ISER_SG_TABLESIZE); + if (IS_ERR(pi_ctx->prot_frpl)) { + isert_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; + } + + pi_ctx->prot_mr = ib_alloc_fast_reg_mr(pd, ISCSI_ISER_SG_TABLESIZE); + if (IS_ERR(pi_ctx->prot_mr)) { + isert_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; + } + desc->ind |= ISERT_PROT_KEY_VALID; + + memset(&mr_init_attr, 0, sizeof(mr_init_attr)); + 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)) { + isert_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; + } + + desc->pi_ctx = pi_ctx; + desc->ind |= ISERT_SIG_KEY_VALID; + desc->ind &= ~ISERT_PROTECTED; + + return 0; + +err_prot_mr: + ib_dereg_mr(desc->pi_ctx->prot_mr); +err_prot_frpl: + ib_free_fast_reg_page_list(desc->pi_ctx->prot_frpl); +err_pi_ctx: + kfree(desc->pi_ctx); + + return ret; +} + +static int isert_create_fr_desc(struct ib_device *ib_device, struct ib_pd *pd, - struct fast_reg_descriptor *fr_desc, u8 protection) + struct fast_reg_descriptor *fr_desc) { 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)) { - pr_err("Failed to allocate data frpl err=%ld\n", - PTR_ERR(fr_desc->data_frpl)); + isert_err("Failed to allocate data frpl err=%ld\n", + PTR_ERR(fr_desc->data_frpl)); return PTR_ERR(fr_desc->data_frpl); } fr_desc->data_mr = ib_alloc_fast_reg_mr(pd, ISCSI_ISER_SG_TABLESIZE); if (IS_ERR(fr_desc->data_mr)) { - pr_err("Failed to allocate data frmr err=%ld\n", - PTR_ERR(fr_desc->data_mr)); + isert_err("Failed to allocate data frmr err=%ld\n", + 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; - } - - 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; + isert_dbg("Created fr_desc %p\n", fr_desc); 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); @@ -513,7 +523,7 @@ err_data_frpl: } static int -isert_conn_create_fastreg_pool(struct isert_conn *isert_conn, u8 pi_support) +isert_conn_create_fastreg_pool(struct isert_conn *isert_conn) { struct fast_reg_descriptor *fr_desc; struct isert_device *device = isert_conn->conn_device; @@ -531,16 +541,15 @@ isert_conn_create_fastreg_pool(struct isert_conn *isert_conn, u8 pi_support) 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"); + isert_err("Failed to allocate fast_reg descriptor\n"); ret = -ENOMEM; goto err; } ret = isert_create_fr_desc(device->ib_device, - isert_conn->conn_pd, fr_desc, - pi_support); + isert_conn->conn_pd, fr_desc); if (ret) { - pr_err("Failed to create fastreg descriptor err=%d\n", + isert_err("Failed to create fastreg descriptor err=%d\n", ret); kfree(fr_desc); goto err; @@ -550,7 +559,7 @@ isert_conn_create_fastreg_pool(struct isert_conn *isert_conn, u8 pi_support) isert_conn->conn_fr_pool_size++; } - pr_debug("Creating conn %p fastreg pool size=%d", + isert_dbg("Creating conn %p fastreg pool size=%d", isert_conn, isert_conn->conn_fr_pool_size); return 0; @@ -563,47 +572,45 @@ err: static int isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) { - struct iscsi_np *np = cma_id->context; - struct isert_np *isert_np = np->np_context; + struct isert_np *isert_np = cma_id->context; + struct iscsi_np *np = isert_np->np; struct isert_conn *isert_conn; struct isert_device *device; struct ib_device *ib_dev = cma_id->device; int ret = 0; - u8 pi_support; spin_lock_bh(&np->np_thread_lock); if (!np->enabled) { spin_unlock_bh(&np->np_thread_lock); - pr_debug("iscsi_np is not enabled, reject connect request\n"); + isert_dbg("iscsi_np is not enabled, reject connect request\n"); return rdma_reject(cma_id, NULL, 0); } spin_unlock_bh(&np->np_thread_lock); - pr_debug("Entering isert_connect_request cma_id: %p, context: %p\n", + isert_dbg("cma_id: %p, portal: %p\n", cma_id, cma_id->context); isert_conn = kzalloc(sizeof(struct isert_conn), GFP_KERNEL); if (!isert_conn) { - pr_err("Unable to allocate isert_conn\n"); + isert_err("Unable to allocate isert_conn\n"); return -ENOMEM; } isert_conn->state = ISER_CONN_INIT; INIT_LIST_HEAD(&isert_conn->conn_accept_node); init_completion(&isert_conn->conn_login_comp); + init_completion(&isert_conn->login_req_comp); init_completion(&isert_conn->conn_wait); - init_completion(&isert_conn->conn_wait_comp_err); kref_init(&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; isert_conn->login_buf = kzalloc(ISCSI_DEF_MAX_RECV_SEG_LEN + ISER_RX_LOGIN_SIZE, GFP_KERNEL); if (!isert_conn->login_buf) { - pr_err("Unable to allocate isert_conn->login_buf\n"); + isert_err("Unable to allocate isert_conn->login_buf\n"); ret = -ENOMEM; goto out; } @@ -611,7 +618,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) isert_conn->login_req_buf = isert_conn->login_buf; isert_conn->login_rsp_buf = isert_conn->login_buf + ISCSI_DEF_MAX_RECV_SEG_LEN; - pr_debug("Set login_buf: %p login_req_buf: %p login_rsp_buf: %p\n", + isert_dbg("Set login_buf: %p login_req_buf: %p login_rsp_buf: %p\n", isert_conn->login_buf, isert_conn->login_req_buf, isert_conn->login_rsp_buf); @@ -621,7 +628,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) ret = ib_dma_mapping_error(ib_dev, isert_conn->login_req_dma); if (ret) { - pr_err("ib_dma_mapping_error failed for login_req_dma: %d\n", + isert_err("ib_dma_mapping_error failed for login_req_dma: %d\n", ret); isert_conn->login_req_dma = 0; goto out_login_buf; @@ -633,7 +640,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) ret = ib_dma_mapping_error(ib_dev, isert_conn->login_rsp_dma); if (ret) { - pr_err("ib_dma_mapping_error failed for login_rsp_dma: %d\n", + isert_err("ib_dma_mapping_error failed for login_rsp_dma: %d\n", ret); isert_conn->login_rsp_dma = 0; goto out_req_dma_map; @@ -649,13 +656,13 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) isert_conn->initiator_depth = min_t(u8, event->param.conn.initiator_depth, device->dev_attr.max_qp_init_rd_atom); - pr_debug("Using initiator_depth: %u\n", isert_conn->initiator_depth); + isert_dbg("Using initiator_depth: %u\n", isert_conn->initiator_depth); isert_conn->conn_device = device; isert_conn->conn_pd = ib_alloc_pd(isert_conn->conn_device->ib_device); if (IS_ERR(isert_conn->conn_pd)) { ret = PTR_ERR(isert_conn->conn_pd); - pr_err("ib_alloc_pd failed for conn %p: ret=%d\n", + isert_err("ib_alloc_pd failed for conn %p: ret=%d\n", isert_conn, ret); goto out_pd; } @@ -664,20 +671,20 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) IB_ACCESS_LOCAL_WRITE); if (IS_ERR(isert_conn->conn_mr)) { ret = PTR_ERR(isert_conn->conn_mr); - pr_err("ib_get_dma_mr failed for conn %p: ret=%d\n", + isert_err("ib_get_dma_mr failed for conn %p: ret=%d\n", isert_conn, ret); goto out_mr; } - pi_support = np->tpg_np->tpg->tpg_attrib.t10_pi; - if (pi_support && !device->pi_capable) { - pr_err("Protection information requested but not supported, " - "rejecting connect request\n"); - ret = rdma_reject(cma_id, NULL, 0); - goto out_mr; - } + ret = isert_conn_setup_qp(isert_conn, cma_id); + if (ret) + goto out_conn_dev; - ret = isert_conn_setup_qp(isert_conn, cma_id, pi_support); + ret = isert_rdma_post_recvl(isert_conn); + if (ret) + goto out_conn_dev; + + ret = isert_rdma_accept(isert_conn); if (ret) goto out_conn_dev; @@ -685,7 +692,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) list_add_tail(&isert_conn->conn_accept_node, &isert_np->np_accept_list); mutex_unlock(&isert_np->np_accept_mutex); - pr_debug("isert_connect_request() up np_sem np: %p\n", np); + isert_info("np %p: Allow accept_np to continue\n", np); up(&isert_np->np_sem); return 0; @@ -705,6 +712,7 @@ out_login_buf: kfree(isert_conn->login_buf); out: kfree(isert_conn); + rdma_reject(cma_id, NULL, 0); return ret; } @@ -713,24 +721,25 @@ isert_connect_release(struct isert_conn *isert_conn) { struct ib_device *ib_dev = isert_conn->conn_cm_id->device; struct isert_device *device = isert_conn->conn_device; - int cq_index; - pr_debug("Entering isert_connect_release(): >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); + isert_dbg("conn %p\n", isert_conn); if (device && device->use_fastreg) isert_conn_free_fastreg_pool(isert_conn); + isert_free_rx_descriptors(isert_conn); + rdma_destroy_id(isert_conn->conn_cm_id); + if (isert_conn->conn_qp) { - cq_index = ((struct isert_cq_desc *) - isert_conn->conn_qp->recv_cq->cq_context)->cq_index; - pr_debug("isert_connect_release: cq_index: %d\n", cq_index); - isert_conn->conn_device->cq_active_qps[cq_index]--; + struct isert_comp *comp = isert_conn->conn_qp->recv_cq->cq_context; - rdma_destroy_qp(isert_conn->conn_cm_id); - } + isert_dbg("dec completion context %p active_qps\n", comp); + mutex_lock(&device_list_mutex); + comp->active_qps--; + mutex_unlock(&device_list_mutex); - isert_free_rx_descriptors(isert_conn); - rdma_destroy_id(isert_conn->conn_cm_id); + ib_destroy_qp(isert_conn->conn_qp); + } ib_dereg_mr(isert_conn->conn_mr); ib_dealloc_pd(isert_conn->conn_pd); @@ -747,16 +756,24 @@ isert_connect_release(struct isert_conn *isert_conn) if (device) isert_device_try_release(device); - - pr_debug("Leaving isert_connect_release >>>>>>>>>>>>\n"); } static void isert_connected_handler(struct rdma_cm_id *cma_id) { - struct isert_conn *isert_conn = cma_id->context; + struct isert_conn *isert_conn = cma_id->qp->qp_context; - kref_get(&isert_conn->conn_kref); + isert_info("conn %p\n", isert_conn); + + if (!kref_get_unless_zero(&isert_conn->conn_kref)) { + isert_warn("conn %p connect_release is running\n", isert_conn); + return; + } + + mutex_lock(&isert_conn->conn_mutex); + if (isert_conn->state != ISER_CONN_FULL_FEATURE) + isert_conn->state = ISER_CONN_UP; + mutex_unlock(&isert_conn->conn_mutex); } static void @@ -765,8 +782,8 @@ isert_release_conn_kref(struct kref *kref) struct isert_conn *isert_conn = container_of(kref, struct isert_conn, conn_kref); - pr_debug("Calling isert_connect_release for final kref %s/%d\n", - current->comm, current->pid); + isert_info("conn %p final kref %s/%d\n", isert_conn, current->comm, + current->pid); isert_connect_release(isert_conn); } @@ -777,75 +794,111 @@ isert_put_conn(struct isert_conn *isert_conn) kref_put(&isert_conn->conn_kref, isert_release_conn_kref); } +/** + * isert_conn_terminate() - Initiate connection termination + * @isert_conn: isert connection struct + * + * Notes: + * In case the connection state is FULL_FEATURE, move state + * to TEMINATING and start teardown sequence (rdma_disconnect). + * In case the connection state is UP, complete flush as well. + * + * This routine must be called with conn_mutex held. Thus it is + * safe to call multiple times. + */ static void -isert_disconnect_work(struct work_struct *work) +isert_conn_terminate(struct isert_conn *isert_conn) { - struct isert_conn *isert_conn = container_of(work, - struct isert_conn, conn_logout_work); + int err; - pr_debug("isert_disconnect_work(): >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); - mutex_lock(&isert_conn->conn_mutex); - if (isert_conn->state == ISER_CONN_UP) + switch (isert_conn->state) { + case ISER_CONN_TERMINATING: + break; + case ISER_CONN_UP: + case ISER_CONN_FULL_FEATURE: /* FALLTHRU */ + isert_info("Terminating conn %p state %d\n", + isert_conn, isert_conn->state); isert_conn->state = ISER_CONN_TERMINATING; - - if (isert_conn->post_recv_buf_count == 0 && - atomic_read(&isert_conn->post_send_buf_count) == 0) { - mutex_unlock(&isert_conn->conn_mutex); - goto wake_up; - } - if (!isert_conn->conn_cm_id) { - mutex_unlock(&isert_conn->conn_mutex); - isert_put_conn(isert_conn); - return; + err = rdma_disconnect(isert_conn->conn_cm_id); + if (err) + isert_warn("Failed rdma_disconnect isert_conn %p\n", + isert_conn); + break; + default: + isert_warn("conn %p teminating in state %d\n", + isert_conn, isert_conn->state); } +} - if (isert_conn->disconnect) { - /* Send DREQ/DREP towards our initiator */ - rdma_disconnect(isert_conn->conn_cm_id); - } +static int +isert_np_cma_handler(struct isert_np *isert_np, + enum rdma_cm_event_type event) +{ + isert_dbg("isert np %p, handling event %d\n", isert_np, event); - mutex_unlock(&isert_conn->conn_mutex); + switch (event) { + case RDMA_CM_EVENT_DEVICE_REMOVAL: + isert_np->np_cm_id = NULL; + break; + case RDMA_CM_EVENT_ADDR_CHANGE: + isert_np->np_cm_id = isert_setup_id(isert_np); + if (IS_ERR(isert_np->np_cm_id)) { + isert_err("isert np %p setup id failed: %ld\n", + isert_np, PTR_ERR(isert_np->np_cm_id)); + isert_np->np_cm_id = NULL; + } + break; + default: + isert_err("isert np %p Unexpected event %d\n", + isert_np, event); + } -wake_up: - complete(&isert_conn->conn_wait); + return -1; } static int -isert_disconnected_handler(struct rdma_cm_id *cma_id, bool disconnect) +isert_disconnected_handler(struct rdma_cm_id *cma_id, + enum rdma_cm_event_type event) { + struct isert_np *isert_np = cma_id->context; struct isert_conn *isert_conn; - if (!cma_id->qp) { - struct isert_np *isert_np = cma_id->context; + if (isert_np->np_cm_id == cma_id) + return isert_np_cma_handler(cma_id->context, event); - isert_np->np_cm_id = NULL; - return -1; - } + isert_conn = cma_id->qp->qp_context; - isert_conn = (struct isert_conn *)cma_id->context; + mutex_lock(&isert_conn->conn_mutex); + isert_conn_terminate(isert_conn); + mutex_unlock(&isert_conn->conn_mutex); - isert_conn->disconnect = disconnect; - INIT_WORK(&isert_conn->conn_logout_work, isert_disconnect_work); - schedule_work(&isert_conn->conn_logout_work); + isert_info("conn %p completing conn_wait\n", isert_conn); + complete(&isert_conn->conn_wait); return 0; } +static void +isert_connect_error(struct rdma_cm_id *cma_id) +{ + struct isert_conn *isert_conn = cma_id->qp->qp_context; + + isert_put_conn(isert_conn); +} + static int isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) { int ret = 0; - bool disconnect = false; - pr_debug("isert_cma_handler: event %d status %d conn %p id %p\n", - event->event, event->status, cma_id->context, cma_id); + isert_info("event %d status %d id %p np %p\n", event->event, + event->status, cma_id, cma_id->context); switch (event->event) { case RDMA_CM_EVENT_CONNECT_REQUEST: ret = isert_connect_request(cma_id, event); if (ret) - pr_err("isert_cma_handler failed RDMA_CM_EVENT: 0x%08x %d\n", - event->event, ret); + isert_err("failed handle connect request %d\n", ret); break; case RDMA_CM_EVENT_ESTABLISHED: isert_connected_handler(cma_id); @@ -853,13 +906,16 @@ isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) case RDMA_CM_EVENT_ADDR_CHANGE: /* FALLTHRU */ case RDMA_CM_EVENT_DISCONNECTED: /* FALLTHRU */ case RDMA_CM_EVENT_DEVICE_REMOVAL: /* FALLTHRU */ - disconnect = true; case RDMA_CM_EVENT_TIMEWAIT_EXIT: /* FALLTHRU */ - ret = isert_disconnected_handler(cma_id, disconnect); + ret = isert_disconnected_handler(cma_id, event->event); break; + case RDMA_CM_EVENT_REJECTED: /* FALLTHRU */ + case RDMA_CM_EVENT_UNREACHABLE: /* FALLTHRU */ case RDMA_CM_EVENT_CONNECT_ERROR: + isert_connect_error(cma_id); + break; default: - pr_err("Unhandled RDMA CMA event: %d\n", event->event); + isert_err("Unhandled RDMA CMA event: %d\n", event->event); break; } @@ -876,7 +932,7 @@ isert_post_recv(struct isert_conn *isert_conn, u32 count) for (rx_wr = isert_conn->conn_rx_wr, i = 0; i < count; i++, rx_wr++) { rx_desc = &isert_conn->conn_rx_descs[rx_head]; - rx_wr->wr_id = (unsigned long)rx_desc; + rx_wr->wr_id = (uintptr_t)rx_desc; rx_wr->sg_list = &rx_desc->rx_sg; rx_wr->num_sge = 1; rx_wr->next = rx_wr + 1; @@ -890,10 +946,10 @@ isert_post_recv(struct isert_conn *isert_conn, u32 count) ret = ib_post_recv(isert_conn->conn_qp, isert_conn->conn_rx_wr, &rx_wr_failed); if (ret) { - pr_err("ib_post_recv() failed with ret: %d\n", ret); + isert_err("ib_post_recv() failed with ret: %d\n", ret); isert_conn->post_recv_buf_count -= count; } else { - pr_debug("isert_post_recv(): Posted %d RX buffers\n", count); + isert_dbg("isert_post_recv(): Posted %d RX buffers\n", count); isert_conn->conn_rx_desc_head = rx_head; } return ret; @@ -910,19 +966,15 @@ isert_post_send(struct isert_conn *isert_conn, struct iser_tx_desc *tx_desc) ISER_HEADERS_LEN, DMA_TO_DEVICE); send_wr.next = NULL; - send_wr.wr_id = (unsigned long)tx_desc; + send_wr.wr_id = (uintptr_t)tx_desc; send_wr.sg_list = tx_desc->tx_sg; send_wr.num_sge = tx_desc->num_sge; send_wr.opcode = IB_WR_SEND; send_wr.send_flags = IB_SEND_SIGNALED; - atomic_inc(&isert_conn->post_send_buf_count); - ret = ib_post_send(isert_conn->conn_qp, &send_wr, &send_wr_failed); - if (ret) { - pr_err("ib_post_send() failed, ret: %d\n", ret); - atomic_dec(&isert_conn->post_send_buf_count); - } + if (ret) + isert_err("ib_post_send() failed, ret: %d\n", ret); return ret; } @@ -945,7 +997,7 @@ isert_create_send_desc(struct isert_conn *isert_conn, if (tx_desc->tx_sg[0].lkey != isert_conn->conn_mr->lkey) { tx_desc->tx_sg[0].lkey = isert_conn->conn_mr->lkey; - pr_debug("tx_desc %p lkey mismatch, fixing\n", tx_desc); + isert_dbg("tx_desc %p lkey mismatch, fixing\n", tx_desc); } } @@ -959,7 +1011,7 @@ isert_init_tx_hdrs(struct isert_conn *isert_conn, dma_addr = ib_dma_map_single(ib_dev, (void *)tx_desc, ISER_HEADERS_LEN, DMA_TO_DEVICE); if (ib_dma_mapping_error(ib_dev, dma_addr)) { - pr_err("ib_dma_mapping_error() failed\n"); + isert_err("ib_dma_mapping_error() failed\n"); return -ENOMEM; } @@ -968,40 +1020,24 @@ isert_init_tx_hdrs(struct isert_conn *isert_conn, tx_desc->tx_sg[0].length = ISER_HEADERS_LEN; tx_desc->tx_sg[0].lkey = isert_conn->conn_mr->lkey; - pr_debug("isert_init_tx_hdrs: Setup tx_sg[0].addr: 0x%llx length: %u" - " lkey: 0x%08x\n", tx_desc->tx_sg[0].addr, - tx_desc->tx_sg[0].length, tx_desc->tx_sg[0].lkey); + isert_dbg("Setup tx_sg[0].addr: 0x%llx length: %u lkey: 0x%x\n", + tx_desc->tx_sg[0].addr, tx_desc->tx_sg[0].length, + tx_desc->tx_sg[0].lkey); return 0; } static void isert_init_send_wr(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd, - struct ib_send_wr *send_wr, bool coalesce) + struct ib_send_wr *send_wr) { struct iser_tx_desc *tx_desc = &isert_cmd->tx_desc; isert_cmd->rdma_wr.iser_ib_op = ISER_IB_SEND; - send_wr->wr_id = (unsigned long)&isert_cmd->tx_desc; + send_wr->wr_id = (uintptr_t)&isert_cmd->tx_desc; send_wr->opcode = IB_WR_SEND; send_wr->sg_list = &tx_desc->tx_sg[0]; send_wr->num_sge = isert_cmd->tx_desc.num_sge; - /* - * Coalesce send completion interrupts by only setting IB_SEND_SIGNALED - * bit for every ISERT_COMP_BATCH_COUNT number of ib_post_send() calls. - */ - mutex_lock(&isert_conn->conn_mutex); - if (coalesce && isert_conn->state == ISER_CONN_UP && - ++isert_conn->conn_comp_batch < ISERT_COMP_BATCH_COUNT) { - tx_desc->llnode_active = true; - llist_add(&tx_desc->comp_llnode, &isert_conn->conn_comp_llist); - mutex_unlock(&isert_conn->conn_mutex); - return; - } - isert_conn->conn_comp_batch = 0; - tx_desc->comp_llnode_batch = llist_del_all(&isert_conn->conn_comp_llist); - mutex_unlock(&isert_conn->conn_mutex); - send_wr->send_flags = IB_SEND_SIGNALED; } @@ -1017,22 +1053,21 @@ isert_rdma_post_recvl(struct isert_conn *isert_conn) sge.length = ISER_RX_LOGIN_SIZE; sge.lkey = isert_conn->conn_mr->lkey; - pr_debug("Setup sge: addr: %llx length: %d 0x%08x\n", + isert_dbg("Setup sge: addr: %llx length: %d 0x%08x\n", sge.addr, sge.length, sge.lkey); memset(&rx_wr, 0, sizeof(struct ib_recv_wr)); - rx_wr.wr_id = (unsigned long)isert_conn->login_req_buf; + rx_wr.wr_id = (uintptr_t)isert_conn->login_req_buf; rx_wr.sg_list = &sge; rx_wr.num_sge = 1; isert_conn->post_recv_buf_count++; ret = ib_post_recv(isert_conn->conn_qp, &rx_wr, &rx_wr_fail); if (ret) { - pr_err("ib_post_recv() failed: %d\n", ret); + isert_err("ib_post_recv() failed: %d\n", ret); isert_conn->post_recv_buf_count--; } - pr_debug("ib_post_recv(): returned success >>>>>>>>>>>>>>>>>>>>>>>>\n"); return ret; } @@ -1072,13 +1107,9 @@ isert_put_login_tx(struct iscsi_conn *conn, struct iscsi_login *login, if (login->login_complete) { if (!conn->sess->sess_ops->SessionType && isert_conn->conn_device->use_fastreg) { - /* Normal Session and fastreg is used */ - u8 pi_support = login->np->tpg_np->tpg->tpg_attrib.t10_pi; - - ret = isert_conn_create_fastreg_pool(isert_conn, - pi_support); + ret = isert_conn_create_fastreg_pool(isert_conn); if (ret) { - pr_err("Conn: %p failed to create" + isert_err("Conn: %p failed to create" " fastreg pool\n", isert_conn); return ret; } @@ -1092,7 +1123,10 @@ isert_put_login_tx(struct iscsi_conn *conn, struct iscsi_login *login, if (ret) return ret; - isert_conn->state = ISER_CONN_UP; + /* Now we are in FULL_FEATURE phase */ + mutex_lock(&isert_conn->conn_mutex); + isert_conn->state = ISER_CONN_FULL_FEATURE; + mutex_unlock(&isert_conn->conn_mutex); goto post_send; } @@ -1109,18 +1143,17 @@ post_send: } static void -isert_rx_login_req(struct iser_rx_desc *rx_desc, int rx_buflen, - struct isert_conn *isert_conn) +isert_rx_login_req(struct isert_conn *isert_conn) { + struct iser_rx_desc *rx_desc = (void *)isert_conn->login_req_buf; + int rx_buflen = isert_conn->login_req_len; struct iscsi_conn *conn = isert_conn->conn; struct iscsi_login *login = conn->conn_login; int size; - if (!login) { - pr_err("conn->conn_login is NULL\n"); - dump_stack(); - return; - } + isert_info("conn %p\n", isert_conn); + + WARN_ON_ONCE(!login); if (login->first_request) { struct iscsi_login_req *login_req = @@ -1146,8 +1179,9 @@ isert_rx_login_req(struct iser_rx_desc *rx_desc, int rx_buflen, memcpy(&login->req[0], (void *)&rx_desc->iscsi_header, ISCSI_HDR_LEN); size = min(rx_buflen, MAX_KEY_VALUE_PAIRS); - pr_debug("Using login payload size: %d, rx_buflen: %d MAX_KEY_VALUE_PAIRS: %d\n", - size, rx_buflen, MAX_KEY_VALUE_PAIRS); + isert_dbg("Using login payload size: %d, rx_buflen: %d " + "MAX_KEY_VALUE_PAIRS: %d\n", size, rx_buflen, + MAX_KEY_VALUE_PAIRS); memcpy(login->req_buf, &rx_desc->data[0], size); if (login->first_request) { @@ -1166,7 +1200,7 @@ static struct iscsi_cmd cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE); if (!cmd) { - pr_err("Unable to allocate iscsi_cmd + isert_cmd\n"); + isert_err("Unable to allocate iscsi_cmd + isert_cmd\n"); return NULL; } isert_cmd = iscsit_priv_cmd(cmd); @@ -1209,8 +1243,8 @@ isert_handle_scsi_cmd(struct isert_conn *isert_conn, sg = &cmd->se_cmd.t_data_sg[0]; sg_nents = max(1UL, DIV_ROUND_UP(imm_data_len, PAGE_SIZE)); - pr_debug("Copying Immediate SG: %p sg_nents: %u from %p imm_data_len: %d\n", - sg, sg_nents, &rx_desc->data[0], imm_data_len); + isert_dbg("Copying Immediate SG: %p sg_nents: %u from %p imm_data_len: %d\n", + sg, sg_nents, &rx_desc->data[0], imm_data_len); sg_copy_from_buffer(sg, sg_nents, &rx_desc->data[0], imm_data_len); @@ -1254,13 +1288,15 @@ isert_handle_iscsi_dataout(struct isert_conn *isert_conn, * FIXME: Unexpected unsolicited_data out */ if (!cmd->unsolicited_data) { - pr_err("Received unexpected solicited data payload\n"); + isert_err("Received unexpected solicited data payload\n"); dump_stack(); return -1; } - pr_debug("Unsolicited DataOut unsol_data_len: %u, write_data_done: %u, data_length: %u\n", - unsol_data_len, cmd->write_data_done, cmd->se_cmd.data_length); + isert_dbg("Unsolicited DataOut unsol_data_len: %u, " + "write_data_done: %u, data_length: %u\n", + unsol_data_len, cmd->write_data_done, + cmd->se_cmd.data_length); sg_off = cmd->write_data_done / PAGE_SIZE; sg_start = &cmd->se_cmd.t_data_sg[sg_off]; @@ -1270,12 +1306,13 @@ isert_handle_iscsi_dataout(struct isert_conn *isert_conn, * FIXME: Non page-aligned unsolicited_data out */ if (page_off) { - pr_err("Received unexpected non-page aligned data payload\n"); + isert_err("unexpected non-page aligned data payload\n"); dump_stack(); return -1; } - pr_debug("Copying DataOut: sg_start: %p, sg_off: %u sg_nents: %u from %p %u\n", - sg_start, sg_off, sg_nents, &rx_desc->data[0], unsol_data_len); + isert_dbg("Copying DataOut: sg_start: %p, sg_off: %u " + "sg_nents: %u from %p %u\n", sg_start, sg_off, + sg_nents, &rx_desc->data[0], unsol_data_len); sg_copy_from_buffer(sg_start, sg_nents, &rx_desc->data[0], unsol_data_len); @@ -1322,8 +1359,8 @@ isert_handle_text_cmd(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd text_in = kzalloc(payload_length, GFP_KERNEL); if (!text_in) { - pr_err("Unable to allocate text_in of payload_length: %u\n", - payload_length); + isert_err("Unable to allocate text_in of payload_length: %u\n", + payload_length); return -ENOMEM; } cmd->text_in_ptr = text_in; @@ -1348,8 +1385,8 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc, if (sess->sess_ops->SessionType && (!(opcode & ISCSI_OP_TEXT) || !(opcode & ISCSI_OP_LOGOUT))) { - pr_err("Got illegal opcode: 0x%02x in SessionType=Discovery," - " ignoring\n", opcode); + isert_err("Got illegal opcode: 0x%02x in SessionType=Discovery," + " ignoring\n", opcode); return 0; } @@ -1395,10 +1432,6 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc, break; ret = iscsit_handle_logout_cmd(conn, cmd, (unsigned char *)hdr); - if (ret > 0) - wait_for_completion_timeout(&conn->conn_logout_comp, - SECONDS_FOR_LOGOUT_COMP * - HZ); break; case ISCSI_OP_TEXT: cmd = isert_allocate_cmd(conn); @@ -1410,7 +1443,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc, rx_desc, (struct iscsi_text *)hdr); break; default: - pr_err("Got unknown iSCSI OpCode: 0x%02x\n", opcode); + isert_err("Got unknown iSCSI OpCode: 0x%02x\n", opcode); dump_stack(); break; } @@ -1431,23 +1464,23 @@ isert_rx_do_work(struct iser_rx_desc *rx_desc, struct isert_conn *isert_conn) if (iser_hdr->flags & ISER_RSV) { read_stag = be32_to_cpu(iser_hdr->read_stag); read_va = be64_to_cpu(iser_hdr->read_va); - pr_debug("ISER_RSV: read_stag: 0x%08x read_va: 0x%16llx\n", - read_stag, (unsigned long long)read_va); + isert_dbg("ISER_RSV: read_stag: 0x%x read_va: 0x%llx\n", + read_stag, (unsigned long long)read_va); } if (iser_hdr->flags & ISER_WSV) { write_stag = be32_to_cpu(iser_hdr->write_stag); write_va = be64_to_cpu(iser_hdr->write_va); - pr_debug("ISER_WSV: write__stag: 0x%08x write_va: 0x%16llx\n", - write_stag, (unsigned long long)write_va); + isert_dbg("ISER_WSV: write_stag: 0x%x write_va: 0x%llx\n", + write_stag, (unsigned long long)write_va); } - pr_debug("ISER ISCSI_CTRL PDU\n"); + isert_dbg("ISER ISCSI_CTRL PDU\n"); break; case ISER_HELLO: - pr_err("iSER Hello message\n"); + isert_err("iSER Hello message\n"); break; default: - pr_warn("Unknown iSER hdr flags: 0x%02x\n", iser_hdr->flags); + isert_warn("Unknown iSER hdr flags: 0x%02x\n", iser_hdr->flags); break; } @@ -1457,7 +1490,7 @@ isert_rx_do_work(struct iser_rx_desc *rx_desc, struct isert_conn *isert_conn) static void isert_rx_completion(struct iser_rx_desc *desc, struct isert_conn *isert_conn, - unsigned long xfer_len) + u32 xfer_len) { struct ib_device *ib_dev = isert_conn->conn_cm_id->device; struct iscsi_hdr *hdr; @@ -1467,34 +1500,43 @@ isert_rx_completion(struct iser_rx_desc *desc, struct isert_conn *isert_conn, if ((char *)desc == isert_conn->login_req_buf) { rx_dma = isert_conn->login_req_dma; rx_buflen = ISER_RX_LOGIN_SIZE; - pr_debug("ISER login_buf: Using rx_dma: 0x%llx, rx_buflen: %d\n", + isert_dbg("login_buf: Using rx_dma: 0x%llx, rx_buflen: %d\n", rx_dma, rx_buflen); } else { rx_dma = desc->dma_addr; rx_buflen = ISER_RX_PAYLOAD_SIZE; - pr_debug("ISER req_buf: Using rx_dma: 0x%llx, rx_buflen: %d\n", + isert_dbg("req_buf: Using rx_dma: 0x%llx, rx_buflen: %d\n", rx_dma, rx_buflen); } ib_dma_sync_single_for_cpu(ib_dev, rx_dma, rx_buflen, DMA_FROM_DEVICE); hdr = &desc->iscsi_header; - pr_debug("iSCSI opcode: 0x%02x, ITT: 0x%08x, flags: 0x%02x dlen: %d\n", + isert_dbg("iSCSI opcode: 0x%02x, ITT: 0x%08x, flags: 0x%02x dlen: %d\n", hdr->opcode, hdr->itt, hdr->flags, (int)(xfer_len - ISER_HEADERS_LEN)); - if ((char *)desc == isert_conn->login_req_buf) - isert_rx_login_req(desc, xfer_len - ISER_HEADERS_LEN, - isert_conn); - else + if ((char *)desc == isert_conn->login_req_buf) { + isert_conn->login_req_len = xfer_len - ISER_HEADERS_LEN; + if (isert_conn->conn) { + struct iscsi_login *login = isert_conn->conn->conn_login; + + if (login && !login->first_request) + isert_rx_login_req(isert_conn); + } + mutex_lock(&isert_conn->conn_mutex); + complete(&isert_conn->login_req_comp); + mutex_unlock(&isert_conn->conn_mutex); + } else { isert_rx_do_work(desc, isert_conn); + } ib_dma_sync_single_for_device(ib_dev, rx_dma, rx_buflen, DMA_FROM_DEVICE); isert_conn->post_recv_buf_count--; - pr_debug("iSERT: Decremented post_recv_buf_count: %d\n", - isert_conn->post_recv_buf_count); + isert_dbg("Decremented post_recv_buf_count: %d\n", + isert_conn->post_recv_buf_count); if ((char *)desc == isert_conn->login_req_buf) return; @@ -1505,7 +1547,7 @@ isert_rx_completion(struct iser_rx_desc *desc, struct isert_conn *isert_conn, ISERT_MIN_POSTED_RX); err = isert_post_recv(isert_conn, count); if (err) { - pr_err("isert_post_recv() count: %d failed, %d\n", + isert_err("isert_post_recv() count: %d failed, %d\n", count, err); } } @@ -1534,12 +1576,12 @@ isert_map_data_buf(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd, 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); + isert_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); + isert_dbg("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; } @@ -1560,21 +1602,21 @@ isert_unmap_cmd(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn) { struct isert_rdma_wr *wr = &isert_cmd->rdma_wr; - pr_debug("isert_unmap_cmd: %p\n", isert_cmd); + isert_dbg("Cmd %p\n", isert_cmd); if (wr->data.sg) { - pr_debug("isert_unmap_cmd: %p unmap_sg op\n", isert_cmd); + isert_dbg("Cmd %p unmap_sg op\n", isert_cmd); isert_unmap_data_buf(isert_conn, &wr->data); } if (wr->send_wr) { - pr_debug("isert_unmap_cmd: %p free send_wr\n", isert_cmd); + isert_dbg("Cmd %p free send_wr\n", isert_cmd); kfree(wr->send_wr); wr->send_wr = NULL; } if (wr->ib_sge) { - pr_debug("isert_unmap_cmd: %p free ib_sge\n", isert_cmd); + isert_dbg("Cmd %p free ib_sge\n", isert_cmd); kfree(wr->ib_sge); wr->ib_sge = NULL; } @@ -1586,11 +1628,10 @@ isert_unreg_rdma(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn) struct isert_rdma_wr *wr = &isert_cmd->rdma_wr; LIST_HEAD(unmap_list); - pr_debug("unreg_fastreg_cmd: %p\n", isert_cmd); + isert_dbg("Cmd %p\n", isert_cmd); if (wr->fr_desc) { - pr_debug("unreg_fastreg_cmd: %p free fr_desc %p\n", - isert_cmd, wr->fr_desc); + isert_dbg("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; @@ -1602,7 +1643,7 @@ isert_unreg_rdma(struct isert_cmd *isert_cmd, struct isert_conn *isert_conn) } if (wr->data.sg) { - pr_debug("unreg_fastreg_cmd: %p unmap_sg op\n", isert_cmd); + isert_dbg("Cmd %p unmap_sg op\n", isert_cmd); isert_unmap_data_buf(isert_conn, &wr->data); } @@ -1618,7 +1659,7 @@ isert_put_cmd(struct isert_cmd *isert_cmd, bool comp_err) struct iscsi_conn *conn = isert_conn->conn; struct isert_device *device = isert_conn->conn_device; - pr_debug("Entering isert_put_cmd: %p\n", isert_cmd); + isert_dbg("Cmd %p\n", isert_cmd); switch (cmd->iscsi_opcode) { case ISCSI_OP_SCSI_CMD: @@ -1668,7 +1709,7 @@ isert_put_cmd(struct isert_cmd *isert_cmd, bool comp_err) * associated cmd->se_cmd needs to be released. */ if (cmd->se_cmd.se_tfo != NULL) { - pr_debug("Calling transport_generic_free_cmd from" + isert_dbg("Calling transport_generic_free_cmd from" " isert_put_cmd for 0x%02x\n", cmd->iscsi_opcode); transport_generic_free_cmd(&cmd->se_cmd, 0); @@ -1687,7 +1728,7 @@ static void isert_unmap_tx_desc(struct iser_tx_desc *tx_desc, struct ib_device *ib_dev) { if (tx_desc->dma_addr != 0) { - pr_debug("Calling ib_dma_unmap_single for tx_desc->dma_addr\n"); + isert_dbg("unmap single for tx_desc->dma_addr\n"); ib_dma_unmap_single(ib_dev, tx_desc->dma_addr, ISER_HEADERS_LEN, DMA_TO_DEVICE); tx_desc->dma_addr = 0; @@ -1699,7 +1740,7 @@ isert_completion_put(struct iser_tx_desc *tx_desc, struct isert_cmd *isert_cmd, 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"); + isert_dbg("unmap single for isert_cmd->pdu_buf_dma\n"); ib_dma_unmap_single(ib_dev, isert_cmd->pdu_buf_dma, isert_cmd->pdu_buf_len, DMA_TO_DEVICE); isert_cmd->pdu_buf_dma = 0; @@ -1717,7 +1758,7 @@ isert_check_pi_status(struct se_cmd *se_cmd, struct ib_mr *sig_mr) 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); + isert_err("ib_check_mr_status failed, ret %d\n", ret); goto fail_mr_status; } @@ -1740,12 +1781,12 @@ isert_check_pi_status(struct se_cmd *se_cmd, struct ib_mr *sig_mr) 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); + isert_err("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; } @@ -1801,7 +1842,7 @@ isert_completion_rdma_read(struct iser_tx_desc *tx_desc, 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); + isert_dbg("Cmd: %p RDMA_READ comp calling execute_cmd\n", isert_cmd); spin_lock_bh(&cmd->istate_lock); cmd->cmd_flags |= ICF_GOT_LAST_DATAOUT; cmd->i_state = ISTATE_RECEIVED_LAST_DATAOUT; @@ -1823,36 +1864,22 @@ isert_do_control_comp(struct work_struct *work) struct ib_device *ib_dev = isert_conn->conn_cm_id->device; struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd; + isert_dbg("Cmd %p i_state %d\n", isert_cmd, cmd->i_state); + switch (cmd->i_state) { case ISTATE_SEND_TASKMGTRSP: - pr_debug("Calling iscsit_tmr_post_handler >>>>>>>>>>>>>>>>>\n"); - - atomic_dec(&isert_conn->post_send_buf_count); iscsit_tmr_post_handler(cmd, cmd->conn); - - cmd->i_state = ISTATE_SENT_STATUS; - 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); - + case ISTATE_SEND_REJECT: /* FALLTHRU */ + case ISTATE_SEND_TEXTRSP: /* FALLTHRU */ cmd->i_state = ISTATE_SENT_STATUS; - isert_completion_put(&isert_cmd->tx_desc, isert_cmd, ib_dev, false); + 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"); - - atomic_dec(&isert_conn->post_send_buf_count); iscsit_logout_post_handler(cmd, cmd->conn); break; - 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, false); - break; default: - pr_err("Unknown do_control_comp i_state %d\n", cmd->i_state); + isert_err("Unknown i_state %d\n", cmd->i_state); dump_stack(); break; } @@ -1865,7 +1892,6 @@ isert_response_completion(struct iser_tx_desc *tx_desc, struct ib_device *ib_dev) { struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd; - struct isert_rdma_wr *wr = &isert_cmd->rdma_wr; if (cmd->i_state == ISTATE_SEND_TASKMGTRSP || cmd->i_state == ISTATE_SEND_LOGOUTRSP || @@ -1878,267 +1904,151 @@ isert_response_completion(struct iser_tx_desc *tx_desc, return; } - /** - * 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, false); } static void -__isert_send_completion(struct iser_tx_desc *tx_desc, - struct isert_conn *isert_conn) +isert_send_completion(struct iser_tx_desc *tx_desc, + struct isert_conn *isert_conn) { struct ib_device *ib_dev = isert_conn->conn_cm_id->device; struct isert_cmd *isert_cmd = tx_desc->isert_cmd; struct isert_rdma_wr *wr; if (!isert_cmd) { - atomic_dec(&isert_conn->post_send_buf_count); isert_unmap_tx_desc(tx_desc, ib_dev); return; } wr = &isert_cmd->rdma_wr; + isert_dbg("Cmd %p iser_ib_op %d\n", isert_cmd, wr->iser_ib_op); + switch (wr->iser_ib_op) { case ISER_IB_RECV: - pr_err("isert_send_completion: Got ISER_IB_RECV\n"); + isert_err("Got ISER_IB_RECV\n"); dump_stack(); break; case ISER_IB_SEND: - pr_debug("isert_send_completion: Got ISER_IB_SEND\n"); isert_response_completion(tx_desc, isert_cmd, isert_conn, ib_dev); break; case ISER_IB_RDMA_WRITE: - 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"); - - atomic_sub(wr->send_wr_num, &isert_conn->post_send_buf_count); isert_completion_rdma_read(tx_desc, isert_cmd); break; default: - pr_err("Unknown wr->iser_ib_op: 0x%02x\n", wr->iser_ib_op); + isert_err("Unknown wr->iser_ib_op: 0x%x\n", wr->iser_ib_op); dump_stack(); break; } } -static void -isert_send_completion(struct iser_tx_desc *tx_desc, - struct isert_conn *isert_conn) -{ - struct llist_node *llnode = tx_desc->comp_llnode_batch; - struct iser_tx_desc *t; - /* - * Drain coalesced completion llist starting from comp_llnode_batch - * setup in isert_init_send_wr(), and then complete trailing tx_desc. - */ - while (llnode) { - t = llist_entry(llnode, struct iser_tx_desc, comp_llnode); - llnode = llist_next(llnode); - __isert_send_completion(t, isert_conn); - } - __isert_send_completion(tx_desc, isert_conn); -} - -static void -isert_cq_drain_comp_llist(struct isert_conn *isert_conn, struct ib_device *ib_dev) +/** + * is_isert_tx_desc() - Indicate if the completion wr_id + * is a TX descriptor or not. + * @isert_conn: iser connection + * @wr_id: completion WR identifier + * + * Since we cannot rely on wc opcode in FLUSH errors + * we must work around it by checking if the wr_id address + * falls in the iser connection rx_descs buffer. If so + * it is an RX descriptor, otherwize it is a TX. + */ +static inline bool +is_isert_tx_desc(struct isert_conn *isert_conn, void *wr_id) { - struct llist_node *llnode; - struct isert_rdma_wr *wr; - struct iser_tx_desc *t; + void *start = isert_conn->conn_rx_descs; + int len = ISERT_QP_MAX_RECV_DTOS * sizeof(*isert_conn->conn_rx_descs); - mutex_lock(&isert_conn->conn_mutex); - llnode = llist_del_all(&isert_conn->conn_comp_llist); - isert_conn->conn_comp_batch = 0; - mutex_unlock(&isert_conn->conn_mutex); - - while (llnode) { - t = llist_entry(llnode, struct iser_tx_desc, comp_llnode); - llnode = llist_next(llnode); - wr = &t->isert_cmd->rdma_wr; - - /** - * 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); + if (wr_id >= start && wr_id < start + len) + return false; - isert_completion_put(t, t->isert_cmd, ib_dev, true); - } + return true; } static void -isert_cq_tx_comp_err(struct iser_tx_desc *tx_desc, struct isert_conn *isert_conn) +isert_cq_comp_err(struct isert_conn *isert_conn, struct ib_wc *wc) { - struct ib_device *ib_dev = isert_conn->conn_cm_id->device; - struct isert_cmd *isert_cmd = tx_desc->isert_cmd; - struct llist_node *llnode = tx_desc->comp_llnode_batch; - struct isert_rdma_wr *wr; - struct iser_tx_desc *t; - - while (llnode) { - t = llist_entry(llnode, struct iser_tx_desc, comp_llnode); - llnode = llist_next(llnode); - wr = &t->isert_cmd->rdma_wr; + if (wc->wr_id == ISER_BEACON_WRID) { + isert_info("conn %p completing conn_wait_comp_err\n", + isert_conn); + complete(&isert_conn->conn_wait_comp_err); + } else if (is_isert_tx_desc(isert_conn, (void *)(uintptr_t)wc->wr_id)) { + struct ib_device *ib_dev = isert_conn->conn_cm_id->device; + struct isert_cmd *isert_cmd; + struct iser_tx_desc *desc; - /** - * 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); + desc = (struct iser_tx_desc *)(uintptr_t)wc->wr_id; + isert_cmd = desc->isert_cmd; + if (!isert_cmd) + isert_unmap_tx_desc(desc, ib_dev); 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, true); -} - -static void -isert_cq_rx_comp_err(struct isert_conn *isert_conn) -{ - struct ib_device *ib_dev = isert_conn->conn_cm_id->device; - struct iscsi_conn *conn = isert_conn->conn; - - if (isert_conn->post_recv_buf_count) - return; - - isert_cq_drain_comp_llist(isert_conn, ib_dev); - - if (conn->sess) { - target_sess_cmd_list_set_waiting(conn->sess->se_sess); - target_wait_for_sess_cmds(conn->sess->se_sess); + isert_completion_put(desc, isert_cmd, ib_dev, true); + } else { + isert_conn->post_recv_buf_count--; + if (!isert_conn->post_recv_buf_count) + iscsit_cause_connection_reinstatement(isert_conn->conn, 0); } - - while (atomic_read(&isert_conn->post_send_buf_count)) - msleep(3000); - - mutex_lock(&isert_conn->conn_mutex); - isert_conn->state = ISER_CONN_DOWN; - mutex_unlock(&isert_conn->conn_mutex); - - iscsit_cause_connection_reinstatement(isert_conn->conn, 0); - - complete(&isert_conn->conn_wait_comp_err); } static void -isert_cq_tx_work(struct work_struct *work) +isert_handle_wc(struct ib_wc *wc) { - struct isert_cq_desc *cq_desc = container_of(work, - struct isert_cq_desc, cq_tx_work); - struct isert_device *device = cq_desc->device; - int cq_index = cq_desc->cq_index; - struct ib_cq *tx_cq = device->dev_tx_cq[cq_index]; struct isert_conn *isert_conn; struct iser_tx_desc *tx_desc; - struct ib_wc wc; - - while (ib_poll_cq(tx_cq, 1, &wc) == 1) { - tx_desc = (struct iser_tx_desc *)(unsigned long)wc.wr_id; - isert_conn = wc.qp->qp_context; + struct iser_rx_desc *rx_desc; - if (wc.status == IB_WC_SUCCESS) { - isert_send_completion(tx_desc, isert_conn); + isert_conn = wc->qp->qp_context; + if (likely(wc->status == IB_WC_SUCCESS)) { + if (wc->opcode == IB_WC_RECV) { + rx_desc = (struct iser_rx_desc *)(uintptr_t)wc->wr_id; + isert_rx_completion(rx_desc, isert_conn, wc->byte_len); } else { - pr_debug("TX wc.status != IB_WC_SUCCESS >>>>>>>>>>>>>>\n"); - pr_debug("TX wc.status: 0x%08x\n", wc.status); - pr_debug("TX wc.vendor_err: 0x%08x\n", wc.vendor_err); - - if (wc.wr_id != ISER_FASTREG_LI_WRID) { - if (tx_desc->llnode_active) - continue; - - atomic_dec(&isert_conn->post_send_buf_count); - isert_cq_tx_comp_err(tx_desc, isert_conn); - } + tx_desc = (struct iser_tx_desc *)(uintptr_t)wc->wr_id; + isert_send_completion(tx_desc, isert_conn); } - } - - ib_req_notify_cq(tx_cq, IB_CQ_NEXT_COMP); -} - -static void -isert_cq_tx_callback(struct ib_cq *cq, void *context) -{ - struct isert_cq_desc *cq_desc = (struct isert_cq_desc *)context; + } else { + if (wc->status != IB_WC_WR_FLUSH_ERR) + isert_err("wr id %llx status %d vend_err %x\n", + wc->wr_id, wc->status, wc->vendor_err); + else + isert_dbg("flush error: wr id %llx\n", wc->wr_id); - queue_work(isert_comp_wq, &cq_desc->cq_tx_work); + if (wc->wr_id != ISER_FASTREG_LI_WRID) + isert_cq_comp_err(isert_conn, wc); + } } static void -isert_cq_rx_work(struct work_struct *work) +isert_cq_work(struct work_struct *work) { - struct isert_cq_desc *cq_desc = container_of(work, - struct isert_cq_desc, cq_rx_work); - struct isert_device *device = cq_desc->device; - int cq_index = cq_desc->cq_index; - struct ib_cq *rx_cq = device->dev_rx_cq[cq_index]; - struct isert_conn *isert_conn; - struct iser_rx_desc *rx_desc; - struct ib_wc wc; - unsigned long xfer_len; + enum { isert_poll_budget = 65536 }; + struct isert_comp *comp = container_of(work, struct isert_comp, + work); + struct ib_wc *const wcs = comp->wcs; + int i, n, completed = 0; - while (ib_poll_cq(rx_cq, 1, &wc) == 1) { - rx_desc = (struct iser_rx_desc *)(unsigned long)wc.wr_id; - isert_conn = wc.qp->qp_context; + while ((n = ib_poll_cq(comp->cq, ARRAY_SIZE(comp->wcs), wcs)) > 0) { + for (i = 0; i < n; i++) + isert_handle_wc(&wcs[i]); - if (wc.status == IB_WC_SUCCESS) { - xfer_len = (unsigned long)wc.byte_len; - isert_rx_completion(rx_desc, isert_conn, xfer_len); - } else { - pr_debug("RX wc.status != IB_WC_SUCCESS >>>>>>>>>>>>>>\n"); - if (wc.status != IB_WC_WR_FLUSH_ERR) { - pr_debug("RX wc.status: 0x%08x\n", wc.status); - pr_debug("RX wc.vendor_err: 0x%08x\n", - wc.vendor_err); - } - isert_conn->post_recv_buf_count--; - isert_cq_rx_comp_err(isert_conn); - } + completed += n; + if (completed >= isert_poll_budget) + break; } - ib_req_notify_cq(rx_cq, IB_CQ_NEXT_COMP); + ib_req_notify_cq(comp->cq, IB_CQ_NEXT_COMP); } static void -isert_cq_rx_callback(struct ib_cq *cq, void *context) +isert_cq_callback(struct ib_cq *cq, void *context) { - struct isert_cq_desc *cq_desc = (struct isert_cq_desc *)context; + struct isert_comp *comp = context; - queue_work(isert_rx_wq, &cq_desc->cq_rx_work); + queue_work(isert_comp_wq, &comp->work); } static int @@ -2147,13 +2057,10 @@ isert_post_response(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd) struct ib_send_wr *wr_failed; int ret; - atomic_inc(&isert_conn->post_send_buf_count); - ret = ib_post_send(isert_conn->conn_qp, &isert_cmd->tx_desc.send_wr, &wr_failed); if (ret) { - pr_err("ib_post_send failed with %d\n", ret); - atomic_dec(&isert_conn->post_send_buf_count); + isert_err("ib_post_send failed with %d\n", ret); return ret; } return ret; @@ -2200,9 +2107,9 @@ isert_put_response(struct iscsi_conn *conn, struct iscsi_cmd *cmd) isert_cmd->tx_desc.num_sge = 2; } - isert_init_send_wr(isert_conn, isert_cmd, send_wr, false); + isert_init_send_wr(isert_conn, isert_cmd, send_wr); - pr_debug("Posting SCSI Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n"); + isert_dbg("Posting SCSI Response\n"); return isert_post_response(isert_conn, isert_cmd); } @@ -2231,8 +2138,16 @@ 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; + if (conn->tpg->tpg_attrib.t10_pi) { + if (device->pi_capable) { + isert_info("conn %p PI offload enabled\n", isert_conn); + isert_conn->pi_support = true; + return TARGET_PROT_ALL; + } + } + + isert_info("conn %p PI offload disabled\n", isert_conn); + isert_conn->pi_support = false; return TARGET_PROT_NORMAL; } @@ -2250,9 +2165,9 @@ isert_put_nopin(struct iscsi_cmd *cmd, struct iscsi_conn *conn, &isert_cmd->tx_desc.iscsi_header, nopout_response); isert_init_tx_hdrs(isert_conn, &isert_cmd->tx_desc); - isert_init_send_wr(isert_conn, isert_cmd, send_wr, false); + isert_init_send_wr(isert_conn, isert_cmd, send_wr); - pr_debug("Posting NOPIN Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n"); + isert_dbg("conn %p Posting NOPIN Response\n", isert_conn); return isert_post_response(isert_conn, isert_cmd); } @@ -2268,9 +2183,9 @@ isert_put_logout_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn) iscsit_build_logout_rsp(cmd, conn, (struct iscsi_logout_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, send_wr, false); + isert_init_send_wr(isert_conn, isert_cmd, send_wr); - pr_debug("Posting Logout Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n"); + isert_dbg("conn %p Posting Logout Response\n", isert_conn); return isert_post_response(isert_conn, isert_cmd); } @@ -2286,9 +2201,9 @@ isert_put_tm_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn) iscsit_build_task_mgt_rsp(cmd, conn, (struct iscsi_tm_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, send_wr, false); + isert_init_send_wr(isert_conn, isert_cmd, send_wr); - pr_debug("Posting Task Management Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n"); + isert_dbg("conn %p Posting Task Management Response\n", isert_conn); return isert_post_response(isert_conn, isert_cmd); } @@ -2318,9 +2233,9 @@ isert_put_reject(struct iscsi_cmd *cmd, struct iscsi_conn *conn) tx_dsg->lkey = isert_conn->conn_mr->lkey; isert_cmd->tx_desc.num_sge = 2; - isert_init_send_wr(isert_conn, isert_cmd, send_wr, false); + isert_init_send_wr(isert_conn, isert_cmd, send_wr); - pr_debug("Posting Reject IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n"); + isert_dbg("conn %p Posting Reject\n", isert_conn); return isert_post_response(isert_conn, isert_cmd); } @@ -2358,9 +2273,9 @@ isert_put_text_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn) tx_dsg->lkey = isert_conn->conn_mr->lkey; isert_cmd->tx_desc.num_sge = 2; } - isert_init_send_wr(isert_conn, isert_cmd, send_wr, false); + isert_init_send_wr(isert_conn, isert_cmd, send_wr); - pr_debug("Posting Text Response IB_WR_SEND >>>>>>>>>>>>>>>>>>>>>>\n"); + isert_dbg("conn %p Text Reject\n", isert_conn); return isert_post_response(isert_conn, isert_cmd); } @@ -2383,30 +2298,31 @@ isert_build_rdma_wr(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd, send_wr->sg_list = ib_sge; send_wr->num_sge = sg_nents; - send_wr->wr_id = (unsigned long)&isert_cmd->tx_desc; + send_wr->wr_id = (uintptr_t)&isert_cmd->tx_desc; /* * Perform mapping of TCM scatterlist memory ib_sge dma_addr. */ for_each_sg(sg_start, tmp_sg, sg_nents, i) { - pr_debug("ISER RDMA from SGL dma_addr: 0x%16llx dma_len: %u, page_off: %u\n", - (unsigned long long)tmp_sg->dma_address, - tmp_sg->length, page_off); + isert_dbg("RDMA from SGL dma_addr: 0x%llx dma_len: %u, " + "page_off: %u\n", + (unsigned long long)tmp_sg->dma_address, + tmp_sg->length, page_off); ib_sge->addr = ib_sg_dma_address(ib_dev, tmp_sg) + page_off; ib_sge->length = min_t(u32, data_left, ib_sg_dma_len(ib_dev, tmp_sg) - page_off); ib_sge->lkey = isert_conn->conn_mr->lkey; - pr_debug("RDMA ib_sge: addr: 0x%16llx length: %u lkey: %08x\n", - ib_sge->addr, ib_sge->length, ib_sge->lkey); + isert_dbg("RDMA ib_sge: addr: 0x%llx length: %u lkey: %x\n", + ib_sge->addr, ib_sge->length, ib_sge->lkey); page_off = 0; data_left -= ib_sge->length; ib_sge++; - pr_debug("Incrementing ib_sge pointer to %p\n", ib_sge); + isert_dbg("Incrementing ib_sge pointer to %p\n", ib_sge); } - pr_debug("Set outgoing sg_list: %p num_sg: %u from TCM SGLs\n", - send_wr->sg_list, send_wr->num_sge); + isert_dbg("Set outgoing sg_list: %p num_sg: %u from TCM SGLs\n", + send_wr->sg_list, send_wr->num_sge); return sg_nents; } @@ -2438,7 +2354,7 @@ isert_map_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd, ib_sge = kzalloc(sizeof(struct ib_sge) * data->nents, GFP_KERNEL); if (!ib_sge) { - pr_warn("Unable to allocate ib_sge\n"); + isert_warn("Unable to allocate ib_sge\n"); ret = -ENOMEM; goto unmap_cmd; } @@ -2448,7 +2364,7 @@ isert_map_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd, 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"); + isert_dbg("Unable to allocate wr->send_wr\n"); ret = -ENOMEM; goto unmap_cmd; } @@ -2512,9 +2428,9 @@ isert_map_fr_pagelist(struct ib_device *ib_dev, chunk_start = start_addr; end_addr = start_addr + ib_sg_dma_len(ib_dev, tmp_sg); - pr_debug("SGL[%d] dma_addr: 0x%16llx len: %u\n", - i, (unsigned long long)tmp_sg->dma_address, - tmp_sg->length); + isert_dbg("SGL[%d] dma_addr: 0x%llx len: %u\n", + i, (unsigned long long)tmp_sg->dma_address, + tmp_sg->length); if ((end_addr & ~PAGE_MASK) && i < last_ent) { new_chunk = 0; @@ -2525,8 +2441,8 @@ isert_map_fr_pagelist(struct ib_device *ib_dev, page = chunk_start & PAGE_MASK; do { fr_pl[n_pages++] = page; - pr_debug("Mapped page_list[%d] page_addr: 0x%16llx\n", - n_pages - 1, page); + isert_dbg("Mapped page_list[%d] page_addr: 0x%llx\n", + n_pages - 1, page); page += PAGE_SIZE; } while (page < end_addr); } @@ -2534,6 +2450,21 @@ isert_map_fr_pagelist(struct ib_device *ib_dev, return n_pages; } +static inline void +isert_inv_rkey(struct ib_send_wr *inv_wr, struct ib_mr *mr) +{ + u32 rkey; + + 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 = mr->rkey; + + /* Bump the key */ + rkey = ib_inc_rkey(mr->rkey); + ib_update_fast_reg_key(mr, rkey); +} + static int isert_fast_reg_mr(struct isert_conn *isert_conn, struct fast_reg_descriptor *fr_desc, @@ -2548,15 +2479,13 @@ isert_fast_reg_mr(struct isert_conn *isert_conn, struct ib_send_wr *bad_wr, *wr = NULL; int ret, pagelist_len; u32 page_off; - u8 key; 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); + isert_dbg("sge: addr: 0x%llx length: %u lkey: %x\n", + sge->addr, sge->length, sge->lkey); return 0; } @@ -2572,21 +2501,15 @@ isert_fast_reg_mr(struct isert_conn *isert_conn, page_off = mem->offset % PAGE_SIZE; - pr_debug("Use fr_desc %p sg_nents %d offset %u\n", - fr_desc, mem->nents, mem->offset); + isert_dbg("Use fr_desc %p sg_nents %d offset %u\n", + fr_desc, mem->nents, mem->offset); pagelist_len = isert_map_fr_pagelist(ib_dev, mem->sg, mem->nents, &frpl->page_list[0]); - 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 = mr->rkey; + if (!(fr_desc->ind & ind)) { + isert_inv_rkey(&inv_wr, mr); wr = &inv_wr; - /* Bump the key */ - key = (u8)(mr->rkey & 0x000000FF); - ib_update_fast_reg_key(mr, ++key); } /* Prepare FASTREG WR */ @@ -2608,7 +2531,7 @@ isert_fast_reg_mr(struct isert_conn *isert_conn, ret = ib_post_send(isert_conn->conn_qp, wr, &bad_wr); if (ret) { - pr_err("fast registration failed, ret:%d\n", ret); + isert_err("fast registration failed, ret:%d\n", ret); return ret; } fr_desc->ind &= ~ind; @@ -2617,9 +2540,8 @@ isert_fast_reg_mr(struct isert_conn *isert_conn, 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); + isert_dbg("sge: addr: 0x%llx length: %u lkey: %x\n", + sge->addr, sge->length, sge->lkey); return ret; } @@ -2665,7 +2587,7 @@ isert_set_sig_attrs(struct se_cmd *se_cmd, struct ib_sig_attrs *sig_attrs) isert_set_dif_domain(se_cmd, sig_attrs, &sig_attrs->mem); break; default: - pr_err("Unsupported PI operation %d\n", se_cmd->prot_op); + isert_err("Unsupported PI operation %d\n", se_cmd->prot_op); return -EINVAL; } @@ -2681,17 +2603,16 @@ isert_set_prot_checks(u8 prot_checks) } 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) +isert_reg_sig_mr(struct isert_conn *isert_conn, + struct se_cmd *se_cmd, + struct isert_rdma_wr *rdma_wr, + struct fast_reg_descriptor *fr_desc) { 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); @@ -2701,26 +2622,20 @@ isert_reg_sig_mr(struct isert_conn *isert_conn, struct se_cmd *se_cmd, 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; + isert_inv_rkey(&inv_wr, pi_ctx->sig_mr); 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.sg_list = &rdma_wr->ib_sg[DATA]; 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; + sig_wr.wr.sig_handover.prot = &rdma_wr->ib_sg[PROT]; if (!wr) wr = &sig_wr; @@ -2729,39 +2644,98 @@ isert_reg_sig_mr(struct isert_conn *isert_conn, struct se_cmd *se_cmd, ret = ib_post_send(isert_conn->conn_qp, wr, &bad_wr); if (ret) { - pr_err("fast registration failed, ret:%d\n", ret); + isert_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; + rdma_wr->ib_sg[SIG].lkey = pi_ctx->sig_mr->lkey; + rdma_wr->ib_sg[SIG].addr = 0; + rdma_wr->ib_sg[SIG].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; + rdma_wr->ib_sg[SIG].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); + isert_dbg("sig_sge: addr: 0x%llx length: %u lkey: %x\n", + rdma_wr->ib_sg[SIG].addr, rdma_wr->ib_sg[SIG].length, + rdma_wr->ib_sg[SIG].lkey); err: return ret; } static int +isert_handle_prot_cmd(struct isert_conn *isert_conn, + struct isert_cmd *isert_cmd, + struct isert_rdma_wr *wr) +{ + struct isert_device *device = isert_conn->conn_device; + struct se_cmd *se_cmd = &isert_cmd->iscsi_cmd->se_cmd; + int ret; + + if (!wr->fr_desc->pi_ctx) { + ret = isert_create_pi_ctx(wr->fr_desc, + device->ib_device, + isert_conn->conn_pd); + if (ret) { + isert_err("conn %p failed to allocate pi_ctx\n", + isert_conn); + return ret; + } + } + + 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) { + isert_err("conn %p failed to map protection buffer\n", + isert_conn); + return ret; + } + + memset(&wr->ib_sg[PROT], 0, sizeof(wr->ib_sg[PROT])); + ret = isert_fast_reg_mr(isert_conn, wr->fr_desc, &wr->prot, + ISERT_PROT_KEY_VALID, &wr->ib_sg[PROT]); + if (ret) { + isert_err("conn %p failed to fast reg mr\n", + isert_conn); + goto unmap_prot_cmd; + } + } + + ret = isert_reg_sig_mr(isert_conn, se_cmd, wr, wr->fr_desc); + if (ret) { + isert_err("conn %p failed to fast reg mr\n", + isert_conn); + goto unmap_prot_cmd; + } + wr->fr_desc->ind |= ISERT_PROTECTED; + + return 0; + +unmap_prot_cmd: + if (se_cmd->t_prot_sg) + isert_unmap_data_buf(isert_conn, &wr->prot); + + return ret; +} + +static int isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd, struct isert_rdma_wr *wr) { struct se_cmd *se_cmd = &cmd->se_cmd; struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd); struct isert_conn *isert_conn = conn->context; - struct ib_sge data_sge; - struct ib_send_wr *send_wr; struct fast_reg_descriptor *fr_desc = NULL; + struct ib_send_wr *send_wr; + struct ib_sge *ib_sg; u32 offset; int ret = 0; unsigned long flags; @@ -2775,8 +2749,7 @@ isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd, if (ret) return ret; - if (wr->data.dma_nents != 1 || - se_cmd->prot_op != TARGET_PROT_NORMAL) { + if (wr->data.dma_nents != 1 || isert_prot_cmd(isert_conn, se_cmd)) { spin_lock_irqsave(&isert_conn->conn_lock, flags); fr_desc = list_first_entry(&isert_conn->conn_fr_pool, struct fast_reg_descriptor, list); @@ -2786,38 +2759,21 @@ isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd, } ret = isert_fast_reg_mr(isert_conn, fr_desc, &wr->data, - ISERT_DATA_KEY_VALID, &data_sge); + ISERT_DATA_KEY_VALID, &wr->ib_sg[DATA]); 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 (isert_prot_cmd(isert_conn, se_cmd)) { + ret = isert_handle_prot_cmd(isert_conn, isert_cmd, wr); if (ret) - goto unmap_prot_cmd; + goto unmap_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)); + ib_sg = &wr->ib_sg[SIG]; + } else { + ib_sg = &wr->ib_sg[DATA]; + } + memcpy(&wr->s_ib_sge, ib_sg, sizeof(*ib_sg)); wr->ib_sge = &wr->s_ib_sge; wr->send_wr_num = 1; memset(&wr->s_send_wr, 0, sizeof(*send_wr)); @@ -2827,12 +2783,12 @@ isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd, send_wr = &isert_cmd->rdma_wr.s_send_wr; send_wr->sg_list = &wr->s_ib_sge; send_wr->num_sge = 1; - send_wr->wr_id = (unsigned long)&isert_cmd->tx_desc; + send_wr->wr_id = (uintptr_t)&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 = se_cmd->prot_op == TARGET_PROT_NORMAL ? + send_wr->send_flags = !isert_prot_cmd(isert_conn, se_cmd) ? 0 : IB_SEND_SIGNALED; } else { send_wr->opcode = IB_WR_RDMA_READ; @@ -2842,9 +2798,7 @@ isert_reg_rdma(struct iscsi_conn *conn, struct iscsi_cmd *cmd, } 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); @@ -2867,16 +2821,17 @@ isert_put_datain(struct iscsi_conn *conn, struct iscsi_cmd *cmd) struct ib_send_wr *wr_failed; int rc; - pr_debug("Cmd: %p RDMA_WRITE data_length: %u\n", + isert_dbg("Cmd: %p RDMA_WRITE data_length: %u\n", isert_cmd, se_cmd->data_length); + wr->iser_ib_op = ISER_IB_RDMA_WRITE; rc = device->reg_rdma_mem(conn, cmd, wr); if (rc) { - pr_err("Cmd: %p failed to prepare RDMA res\n", isert_cmd); + isert_err("Cmd: %p failed to prepare RDMA res\n", isert_cmd); return rc; } - if (se_cmd->prot_op == TARGET_PROT_NORMAL) { + if (!isert_prot_cmd(isert_conn, se_cmd)) { /* * Build isert_conn->tx_desc for iSCSI response PDU and attach */ @@ -2886,24 +2841,20 @@ isert_put_datain(struct iscsi_conn *conn, struct iscsi_cmd *cmd) &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, false); + &isert_cmd->tx_desc.send_wr); 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, &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, &isert_conn->post_send_buf_count); - } + if (rc) + isert_warn("ib_post_send() failed for IB_WR_RDMA_WRITE\n"); - if (se_cmd->prot_op == TARGET_PROT_NORMAL) - pr_debug("Cmd: %p posted RDMA_WRITE + Response for iSER Data " + if (!isert_prot_cmd(isert_conn, se_cmd)) + isert_dbg("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_dbg("Cmd: %p posted RDMA_WRITE for iSER Data READ\n", isert_cmd); return 1; @@ -2920,23 +2871,20 @@ isert_get_dataout(struct iscsi_conn *conn, struct iscsi_cmd *cmd, bool recovery) struct ib_send_wr *wr_failed; int rc; - pr_debug("Cmd: %p RDMA_READ data_length: %u write_data_done: %u\n", + isert_dbg("Cmd: %p RDMA_READ data_length: %u write_data_done: %u\n", isert_cmd, se_cmd->data_length, cmd->write_data_done); wr->iser_ib_op = ISER_IB_RDMA_READ; rc = device->reg_rdma_mem(conn, cmd, wr); if (rc) { - pr_err("Cmd: %p failed to prepare RDMA res\n", isert_cmd); + isert_err("Cmd: %p failed to prepare RDMA res\n", isert_cmd); return rc; } - 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_READ\n"); - atomic_sub(wr->send_wr_num, &isert_conn->post_send_buf_count); - } - pr_debug("Cmd: %p posted RDMA_READ memory for ISER Data WRITE\n", + if (rc) + isert_warn("ib_post_send() failed for IB_WR_RDMA_READ\n"); + + isert_dbg("Cmd: %p posted RDMA_READ memory for ISER Data WRITE\n", isert_cmd); return 0; @@ -2952,7 +2900,7 @@ isert_immediate_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state) ret = isert_put_nopin(cmd, conn, false); break; default: - pr_err("Unknown immediate state: 0x%02x\n", state); + isert_err("Unknown immediate state: 0x%02x\n", state); ret = -EINVAL; break; } @@ -2963,15 +2911,14 @@ isert_immediate_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state) static int isert_response_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state) { + struct isert_conn *isert_conn = conn->context; int ret; switch (state) { case ISTATE_SEND_LOGOUTRSP: ret = isert_put_logout_rsp(cmd, conn); - if (!ret) { - pr_debug("Returning iSER Logout -EAGAIN\n"); - ret = -EAGAIN; - } + if (!ret) + isert_conn->logout_posted = true; break; case ISTATE_SEND_NOPIN: ret = isert_put_nopin(cmd, conn, true); @@ -2993,7 +2940,7 @@ isert_response_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state) ret = isert_put_response(conn, cmd); break; default: - pr_err("Unknown response state: 0x%02x\n", state); + isert_err("Unknown response state: 0x%02x\n", state); ret = -EINVAL; break; } @@ -3001,27 +2948,64 @@ isert_response_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state) return ret; } +struct rdma_cm_id * +isert_setup_id(struct isert_np *isert_np) +{ + struct iscsi_np *np = isert_np->np; + struct rdma_cm_id *id; + struct sockaddr *sa; + int ret; + + sa = (struct sockaddr *)&np->np_sockaddr; + isert_dbg("ksockaddr: %p, sa: %p\n", &np->np_sockaddr, sa); + + id = rdma_create_id(isert_cma_handler, isert_np, + RDMA_PS_TCP, IB_QPT_RC); + if (IS_ERR(id)) { + isert_err("rdma_create_id() failed: %ld\n", PTR_ERR(id)); + ret = PTR_ERR(id); + goto out; + } + isert_dbg("id %p context %p\n", id, id->context); + + ret = rdma_bind_addr(id, sa); + if (ret) { + isert_err("rdma_bind_addr() failed: %d\n", ret); + goto out_id; + } + + ret = rdma_listen(id, ISERT_RDMA_LISTEN_BACKLOG); + if (ret) { + isert_err("rdma_listen() failed: %d\n", ret); + goto out_id; + } + + return id; +out_id: + rdma_destroy_id(id); +out: + return ERR_PTR(ret); +} + static int isert_setup_np(struct iscsi_np *np, struct __kernel_sockaddr_storage *ksockaddr) { struct isert_np *isert_np; struct rdma_cm_id *isert_lid; - struct sockaddr *sa; int ret; isert_np = kzalloc(sizeof(struct isert_np), GFP_KERNEL); if (!isert_np) { - pr_err("Unable to allocate struct isert_np\n"); + isert_err("Unable to allocate struct isert_np\n"); return -ENOMEM; } sema_init(&isert_np->np_sem, 0); mutex_init(&isert_np->np_accept_mutex); INIT_LIST_HEAD(&isert_np->np_accept_list); init_completion(&isert_np->np_login_comp); + isert_np->np = np; - sa = (struct sockaddr *)ksockaddr; - pr_debug("ksockaddr: %p, sa: %p\n", ksockaddr, sa); /* * Setup the np->np_sockaddr from the passed sockaddr setup * in iscsi_target_configfs.c code.. @@ -3029,37 +3013,20 @@ isert_setup_np(struct iscsi_np *np, memcpy(&np->np_sockaddr, ksockaddr, sizeof(struct __kernel_sockaddr_storage)); - isert_lid = rdma_create_id(isert_cma_handler, np, RDMA_PS_TCP, - IB_QPT_RC); + isert_lid = isert_setup_id(isert_np); if (IS_ERR(isert_lid)) { - pr_err("rdma_create_id() for isert_listen_handler failed: %ld\n", - PTR_ERR(isert_lid)); ret = PTR_ERR(isert_lid); goto out; } - ret = rdma_bind_addr(isert_lid, sa); - if (ret) { - pr_err("rdma_bind_addr() for isert_lid failed: %d\n", ret); - goto out_lid; - } - - ret = rdma_listen(isert_lid, ISERT_RDMA_LISTEN_BACKLOG); - if (ret) { - pr_err("rdma_listen() for isert_lid failed: %d\n", ret); - goto out_lid; - } - isert_np->np_cm_id = isert_lid; np->np_context = isert_np; - pr_debug("Setup isert_lid->context: %p\n", isert_lid->context); return 0; -out_lid: - rdma_destroy_id(isert_lid); out: kfree(isert_np); + return ret; } @@ -3075,16 +3042,12 @@ isert_rdma_accept(struct isert_conn *isert_conn) cp.retry_count = 7; cp.rnr_retry_count = 7; - pr_debug("Before rdma_accept >>>>>>>>>>>>>>>>>>>>.\n"); - ret = rdma_accept(cm_id, &cp); if (ret) { - pr_err("rdma_accept() failed with: %d\n", ret); + isert_err("rdma_accept() failed with: %d\n", ret); return ret; } - pr_debug("After rdma_accept >>>>>>>>>>>>>>>>>>>>>.\n"); - return 0; } @@ -3094,7 +3057,15 @@ isert_get_login_rx(struct iscsi_conn *conn, struct iscsi_login *login) struct isert_conn *isert_conn = (struct isert_conn *)conn->context; int ret; - pr_debug("isert_get_login_rx before conn_login_comp conn: %p\n", conn); + isert_info("before login_req comp conn: %p\n", isert_conn); + ret = wait_for_completion_interruptible(&isert_conn->login_req_comp); + if (ret) { + isert_err("isert_conn %p interrupted before got login req\n", + isert_conn); + return ret; + } + reinit_completion(&isert_conn->login_req_comp); + /* * For login requests after the first PDU, isert_rx_login_req() will * kick schedule_delayed_work(&conn->login_work) as the packet is @@ -3104,11 +3075,15 @@ isert_get_login_rx(struct iscsi_conn *conn, struct iscsi_login *login) if (!login->first_request) return 0; + isert_rx_login_req(isert_conn); + + isert_info("before conn_login_comp conn: %p\n", conn); ret = wait_for_completion_interruptible(&isert_conn->conn_login_comp); if (ret) return ret; - pr_debug("isert_get_login_rx processing login->req: %p\n", login->req); + isert_info("processing login->req: %p\n", login->req); + return 0; } @@ -3161,7 +3136,7 @@ accept_wait: spin_lock_bh(&np->np_thread_lock); if (np->np_thread_state >= ISCSI_NP_THREAD_RESET) { spin_unlock_bh(&np->np_thread_lock); - pr_debug("np_thread_state %d for isert_accept_np\n", + isert_dbg("np_thread_state %d for isert_accept_np\n", np->np_thread_state); /** * No point in stalling here when np_thread @@ -3186,17 +3161,10 @@ accept_wait: isert_conn->conn = conn; max_accept = 0; - ret = isert_rdma_post_recvl(isert_conn); - if (ret) - return ret; - - ret = isert_rdma_accept(isert_conn); - if (ret) - return ret; - isert_set_conn_info(np, conn, isert_conn); - pr_debug("Processing isert_accept_np: isert_conn: %p\n", isert_conn); + isert_dbg("Processing isert_conn: %p\n", isert_conn); + return 0; } @@ -3204,25 +3172,103 @@ static void isert_free_np(struct iscsi_np *np) { struct isert_np *isert_np = (struct isert_np *)np->np_context; + struct isert_conn *isert_conn, *n; if (isert_np->np_cm_id) rdma_destroy_id(isert_np->np_cm_id); + /* + * FIXME: At this point we don't have a good way to insure + * that at this point we don't have hanging connections that + * completed RDMA establishment but didn't start iscsi login + * process. So work-around this by cleaning up what ever piled + * up in np_accept_list. + */ + mutex_lock(&isert_np->np_accept_mutex); + if (!list_empty(&isert_np->np_accept_list)) { + isert_info("Still have isert connections, cleaning up...\n"); + list_for_each_entry_safe(isert_conn, n, + &isert_np->np_accept_list, + conn_accept_node) { + isert_info("cleaning isert_conn %p state (%d)\n", + isert_conn, isert_conn->state); + isert_connect_release(isert_conn); + } + } + mutex_unlock(&isert_np->np_accept_mutex); + np->np_context = NULL; kfree(isert_np); } +static void isert_release_work(struct work_struct *work) +{ + struct isert_conn *isert_conn = container_of(work, + struct isert_conn, + release_work); + + isert_info("Starting release conn %p\n", isert_conn); + + wait_for_completion(&isert_conn->conn_wait); + + mutex_lock(&isert_conn->conn_mutex); + isert_conn->state = ISER_CONN_DOWN; + mutex_unlock(&isert_conn->conn_mutex); + + isert_info("Destroying conn %p\n", isert_conn); + isert_put_conn(isert_conn); +} + +static void +isert_wait4logout(struct isert_conn *isert_conn) +{ + struct iscsi_conn *conn = isert_conn->conn; + + isert_info("conn %p\n", isert_conn); + + if (isert_conn->logout_posted) { + isert_info("conn %p wait for conn_logout_comp\n", isert_conn); + wait_for_completion_timeout(&conn->conn_logout_comp, + SECONDS_FOR_LOGOUT_COMP * HZ); + } +} + +static void +isert_wait4cmds(struct iscsi_conn *conn) +{ + isert_info("iscsi_conn %p\n", conn); + + if (conn->sess) { + target_sess_cmd_list_set_waiting(conn->sess->se_sess); + target_wait_for_sess_cmds(conn->sess->se_sess); + } +} + +static void +isert_wait4flush(struct isert_conn *isert_conn) +{ + struct ib_recv_wr *bad_wr; + + isert_info("conn %p\n", isert_conn); + + init_completion(&isert_conn->conn_wait_comp_err); + isert_conn->beacon.wr_id = ISER_BEACON_WRID; + /* post an indication that all flush errors were consumed */ + if (ib_post_recv(isert_conn->conn_qp, &isert_conn->beacon, &bad_wr)) { + isert_err("conn %p failed to post beacon", isert_conn); + return; + } + + wait_for_completion(&isert_conn->conn_wait_comp_err); +} + static void isert_wait_conn(struct iscsi_conn *conn) { struct isert_conn *isert_conn = conn->context; - pr_debug("isert_wait_conn: Starting \n"); + isert_info("Starting conn %p\n", isert_conn); mutex_lock(&isert_conn->conn_mutex); - if (isert_conn->conn_cm_id && !isert_conn->disconnect) { - pr_debug("Calling rdma_disconnect from isert_wait_conn\n"); - rdma_disconnect(isert_conn->conn_cm_id); - } /* * Only wait for conn_wait_comp_err if the isert_conn made it * into full feature phase.. @@ -3231,14 +3277,15 @@ static void isert_wait_conn(struct iscsi_conn *conn) mutex_unlock(&isert_conn->conn_mutex); return; } - if (isert_conn->state == ISER_CONN_UP) - isert_conn->state = ISER_CONN_TERMINATING; + isert_conn_terminate(isert_conn); mutex_unlock(&isert_conn->conn_mutex); - wait_for_completion(&isert_conn->conn_wait_comp_err); + isert_wait4cmds(conn); + isert_wait4flush(isert_conn); + isert_wait4logout(isert_conn); - wait_for_completion(&isert_conn->conn_wait); - isert_put_conn(isert_conn); + INIT_WORK(&isert_conn->release_work, isert_release_work); + queue_work(isert_release_wq, &isert_conn->release_work); } static void isert_free_conn(struct iscsi_conn *conn) @@ -3273,35 +3320,39 @@ static int __init isert_init(void) { int ret; - isert_rx_wq = alloc_workqueue("isert_rx_wq", 0, 0); - if (!isert_rx_wq) { - pr_err("Unable to allocate isert_rx_wq\n"); + isert_comp_wq = alloc_workqueue("isert_comp_wq", 0, 0); + if (!isert_comp_wq) { + isert_err("Unable to allocate isert_comp_wq\n"); + ret = -ENOMEM; return -ENOMEM; } - isert_comp_wq = alloc_workqueue("isert_comp_wq", 0, 0); - if (!isert_comp_wq) { - pr_err("Unable to allocate isert_comp_wq\n"); + isert_release_wq = alloc_workqueue("isert_release_wq", WQ_UNBOUND, + WQ_UNBOUND_MAX_ACTIVE); + if (!isert_release_wq) { + isert_err("Unable to allocate isert_release_wq\n"); ret = -ENOMEM; - goto destroy_rx_wq; + goto destroy_comp_wq; } iscsit_register_transport(&iser_target_transport); - pr_debug("iSER_TARGET[0] - Loaded iser_target_transport\n"); + isert_info("iSER_TARGET[0] - Loaded iser_target_transport\n"); + return 0; -destroy_rx_wq: - destroy_workqueue(isert_rx_wq); +destroy_comp_wq: + destroy_workqueue(isert_comp_wq); + return ret; } static void __exit isert_exit(void) { flush_scheduled_work(); + destroy_workqueue(isert_release_wq); destroy_workqueue(isert_comp_wq); - destroy_workqueue(isert_rx_wq); iscsit_unregister_transport(&iser_target_transport); - pr_debug("iSER_TARGET[0] - Released iser_target_transport\n"); + isert_info("iSER_TARGET[0] - Released iser_target_transport\n"); } MODULE_DESCRIPTION("iSER-Target for mainline target infrastructure"); diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h index 04f51f7bf614..8dc8415d152d 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.h +++ b/drivers/infiniband/ulp/isert/ib_isert.h @@ -4,9 +4,37 @@ #include <rdma/ib_verbs.h> #include <rdma/rdma_cm.h> +#define DRV_NAME "isert" +#define PFX DRV_NAME ": " + +#define isert_dbg(fmt, arg...) \ + do { \ + if (unlikely(isert_debug_level > 2)) \ + printk(KERN_DEBUG PFX "%s: " fmt,\ + __func__ , ## arg); \ + } while (0) + +#define isert_warn(fmt, arg...) \ + do { \ + if (unlikely(isert_debug_level > 0)) \ + pr_warn(PFX "%s: " fmt, \ + __func__ , ## arg); \ + } while (0) + +#define isert_info(fmt, arg...) \ + do { \ + if (unlikely(isert_debug_level > 1)) \ + pr_info(PFX "%s: " fmt, \ + __func__ , ## arg); \ + } while (0) + +#define isert_err(fmt, arg...) \ + pr_err(PFX "%s: " fmt, __func__ , ## arg) + #define ISERT_RDMA_LISTEN_BACKLOG 10 #define ISCSI_ISER_SG_TABLESIZE 256 #define ISER_FASTREG_LI_WRID 0xffffffffffffffffULL +#define ISER_BEACON_WRID 0xfffffffffffffffeULL enum isert_desc_type { ISCSI_TX_CONTROL, @@ -23,6 +51,7 @@ enum iser_ib_op_code { enum iser_conn_state { ISER_CONN_INIT, ISER_CONN_UP, + ISER_CONN_FULL_FEATURE, ISER_CONN_TERMINATING, ISER_CONN_DOWN, }; @@ -44,9 +73,6 @@ struct iser_tx_desc { struct ib_sge tx_sg[2]; int num_sge; struct isert_cmd *isert_cmd; - struct llist_node *comp_llnode_batch; - struct llist_node comp_llnode; - bool llnode_active; struct ib_send_wr send_wr; } __packed; @@ -81,6 +107,12 @@ struct isert_data_buf { enum dma_data_direction dma_dir; }; +enum { + DATA = 0, + PROT = 1, + SIG = 2, +}; + struct isert_rdma_wr { struct list_head wr_list; struct isert_cmd *isert_cmd; @@ -90,6 +122,7 @@ struct isert_rdma_wr { int send_wr_num; struct ib_send_wr *send_wr; struct ib_send_wr s_send_wr; + struct ib_sge ib_sg[3]; struct isert_data_buf data; struct isert_data_buf prot; struct fast_reg_descriptor *fr_desc; @@ -117,14 +150,15 @@ struct isert_device; struct isert_conn { enum iser_conn_state state; int post_recv_buf_count; - atomic_t post_send_buf_count; u32 responder_resources; u32 initiator_depth; + bool pi_support; u32 max_sge; char *login_buf; char *login_req_buf; char *login_rsp_buf; u64 login_req_dma; + int login_req_len; u64 login_rsp_dma; unsigned int conn_rx_desc_head; struct iser_rx_desc *conn_rx_descs; @@ -132,13 +166,13 @@ struct isert_conn { struct iscsi_conn *conn; struct list_head conn_accept_node; struct completion conn_login_comp; + struct completion login_req_comp; struct iser_tx_desc conn_login_tx_desc; struct rdma_cm_id *conn_cm_id; struct ib_pd *conn_pd; struct ib_mr *conn_mr; struct ib_qp *conn_qp; struct isert_device *conn_device; - struct work_struct conn_logout_work; struct mutex conn_mutex; struct completion conn_wait; struct completion conn_wait_comp_err; @@ -147,31 +181,38 @@ struct isert_conn { int conn_fr_pool_size; /* lock to protect fastreg pool */ spinlock_t conn_lock; -#define ISERT_COMP_BATCH_COUNT 8 - int conn_comp_batch; - struct llist_head conn_comp_llist; - bool disconnect; + struct work_struct release_work; + struct ib_recv_wr beacon; + bool logout_posted; }; #define ISERT_MAX_CQ 64 -struct isert_cq_desc { - struct isert_device *device; - int cq_index; - struct work_struct cq_rx_work; - struct work_struct cq_tx_work; +/** + * struct isert_comp - iSER completion context + * + * @device: pointer to device handle + * @cq: completion queue + * @wcs: work completion array + * @active_qps: Number of active QPs attached + * to completion context + * @work: completion work handle + */ +struct isert_comp { + struct isert_device *device; + struct ib_cq *cq; + struct ib_wc wcs[16]; + int active_qps; + struct work_struct work; }; struct isert_device { int use_fastreg; bool pi_capable; - int cqs_used; int refcount; - int cq_active_qps[ISERT_MAX_CQ]; struct ib_device *ib_device; - struct ib_cq *dev_rx_cq[ISERT_MAX_CQ]; - struct ib_cq *dev_tx_cq[ISERT_MAX_CQ]; - struct isert_cq_desc *cq_desc; + struct isert_comp *comps; + int comps_used; struct list_head dev_node; struct ib_device_attr dev_attr; int (*reg_rdma_mem)(struct iscsi_conn *conn, @@ -182,6 +223,7 @@ struct isert_device { }; struct isert_np { + struct iscsi_np *np; struct semaphore np_sem; struct rdma_cm_id *np_cm_id; struct mutex np_accept_mutex; diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 73e58d22e325..f8ec32298906 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -609,6 +609,7 @@ static int __init iscsi_target_init_module(void) return ret; r2t_out: + iscsit_unregister_transport(&iscsi_target_transport); kmem_cache_destroy(lio_r2t_cache); ooo_out: kmem_cache_destroy(lio_ooo_cache); diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h index 302eb3b78715..09a522bae222 100644 --- a/drivers/target/iscsi/iscsi_target_core.h +++ b/drivers/target/iscsi/iscsi_target_core.h @@ -790,7 +790,6 @@ 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 480f2e0ecc11..713c0c1877ab 100644 --- a/drivers/target/iscsi/iscsi_target_login.c +++ b/drivers/target/iscsi/iscsi_target_login.c @@ -281,7 +281,6 @@ 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); @@ -343,9 +342,8 @@ 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(sup_pro_ops); + sess->se_sess = transport_init_session(TARGET_PROT_NORMAL); if (IS_ERR(sess->se_sess)) { iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR, ISCSI_LOGIN_STATUS_NO_RESOURCES); @@ -1161,6 +1159,7 @@ void iscsi_target_login_sess_out(struct iscsi_conn *conn, } kfree(conn->sess->sess_ops); kfree(conn->sess); + conn->sess = NULL; old_sess_out: iscsi_stop_login_thread_timer(np); @@ -1204,6 +1203,9 @@ old_sess_out: conn->sock = NULL; } + if (conn->conn_transport->iscsit_wait_conn) + conn->conn_transport->iscsit_wait_conn(conn); + if (conn->conn_transport->iscsit_free_conn) conn->conn_transport->iscsit_free_conn(conn); @@ -1364,6 +1366,9 @@ static int __iscsi_target_login_thread(struct iscsi_np *np) } login->zero_tsih = zero_tsih; + conn->sess->se_sess->sup_prot_ops = + conn->conn_transport->iscsit_get_sup_prot_ops(conn); + tpg = conn->tpg; if (!tpg) { pr_err("Unable to locate struct iscsi_conn->tpg\n"); diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c index c3cb5c15efda..9053a3c0c6e5 100644 --- a/drivers/target/iscsi/iscsi_target_tpg.c +++ b/drivers/target/iscsi/iscsi_target_tpg.c @@ -501,7 +501,6 @@ 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); diff --git a/drivers/target/iscsi/iscsi_target_transport.c b/drivers/target/iscsi/iscsi_target_transport.c index 882728fac30c..08217d62fb0d 100644 --- a/drivers/target/iscsi/iscsi_target_transport.c +++ b/drivers/target/iscsi/iscsi_target_transport.c @@ -26,8 +26,7 @@ struct iscsit_transport *iscsit_get_transport(int type) void iscsit_put_transport(struct iscsit_transport *t) { - if (t->owner) - module_put(t->owner); + module_put(t->owner); } int iscsit_register_transport(struct iscsit_transport *t) diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c index 7c6a95bcb35e..bcd88ec99793 100644 --- a/drivers/target/iscsi/iscsi_target_util.c +++ b/drivers/target/iscsi/iscsi_target_util.c @@ -1356,15 +1356,15 @@ static int iscsit_do_tx_data( struct iscsi_conn *conn, struct iscsi_data_count *count) { - int data = count->data_length, total_tx = 0, tx_loop = 0, iov_len; + int ret, iov_len; struct kvec *iov_p; struct msghdr msg; if (!conn || !conn->sock || !conn->conn_ops) return -1; - if (data <= 0) { - pr_err("Data length is: %d\n", data); + if (count->data_length <= 0) { + pr_err("Data length is: %d\n", count->data_length); return -1; } @@ -1373,20 +1373,16 @@ static int iscsit_do_tx_data( iov_p = count->iov; iov_len = count->iov_count; - while (total_tx < data) { - tx_loop = kernel_sendmsg(conn->sock, &msg, iov_p, iov_len, - (data - total_tx)); - if (tx_loop <= 0) { - pr_debug("tx_loop: %d total_tx %d\n", - tx_loop, total_tx); - return tx_loop; - } - total_tx += tx_loop; - pr_debug("tx_loop: %d, total_tx: %d, data: %d\n", - tx_loop, total_tx, data); + ret = kernel_sendmsg(conn->sock, &msg, iov_p, iov_len, + count->data_length); + if (ret != count->data_length) { + pr_err("Unexpected ret: %d send data %d\n", + ret, count->data_length); + return -EPIPE; } + pr_debug("ret: %d, sent data: %d\n", ret, count->data_length); - return total_tx; + return ret; } int rx_data( diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 4d1b7224a7f2..7172a71f9f0b 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -138,7 +138,7 @@ static void tcm_loop_submission_work(struct work_struct *work) set_host_byte(sc, DID_TRANSPORT_DISRUPTED); goto out_done; } - tl_nexus = tl_hba->tl_nexus; + tl_nexus = tl_tpg->tl_nexus; if (!tl_nexus) { scmd_printk(KERN_ERR, sc, "TCM_Loop I_T Nexus" " does not exist\n"); @@ -218,16 +218,26 @@ static int tcm_loop_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *sc) * to struct scsi_device */ static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg, - struct tcm_loop_nexus *tl_nexus, int lun, int task, enum tcm_tmreq_table tmr) { struct se_cmd *se_cmd = NULL; struct se_session *se_sess; struct se_portal_group *se_tpg; + struct tcm_loop_nexus *tl_nexus; struct tcm_loop_cmd *tl_cmd = NULL; struct tcm_loop_tmr *tl_tmr = NULL; int ret = TMR_FUNCTION_FAILED, rc; + /* + * Locate the tl_nexus and se_sess pointers + */ + tl_nexus = tl_tpg->tl_nexus; + if (!tl_nexus) { + pr_err("Unable to perform device reset without" + " active I_T Nexus\n"); + return ret; + } + tl_cmd = kmem_cache_zalloc(tcm_loop_cmd_cache, GFP_KERNEL); if (!tl_cmd) { pr_err("Unable to allocate memory for tl_cmd\n"); @@ -243,7 +253,7 @@ static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg, se_cmd = &tl_cmd->tl_se_cmd; se_tpg = &tl_tpg->tl_se_tpg; - se_sess = tl_nexus->se_sess; + se_sess = tl_tpg->tl_nexus->se_sess; /* * Initialize struct se_cmd descriptor from target_core_mod infrastructure */ @@ -288,7 +298,6 @@ release: static int tcm_loop_abort_task(struct scsi_cmnd *sc) { struct tcm_loop_hba *tl_hba; - struct tcm_loop_nexus *tl_nexus; struct tcm_loop_tpg *tl_tpg; int ret = FAILED; @@ -296,21 +305,8 @@ static int tcm_loop_abort_task(struct scsi_cmnd *sc) * Locate the tcm_loop_hba_t pointer */ tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host); - /* - * Locate the tl_nexus and se_sess pointers - */ - tl_nexus = tl_hba->tl_nexus; - if (!tl_nexus) { - pr_err("Unable to perform device reset without" - " active I_T Nexus\n"); - return FAILED; - } - - /* - * Locate the tl_tpg pointer from TargetID in sc->device->id - */ tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id]; - ret = tcm_loop_issue_tmr(tl_tpg, tl_nexus, sc->device->lun, + ret = tcm_loop_issue_tmr(tl_tpg, sc->device->lun, sc->request->tag, TMR_ABORT_TASK); return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED; } @@ -322,7 +318,6 @@ static int tcm_loop_abort_task(struct scsi_cmnd *sc) static int tcm_loop_device_reset(struct scsi_cmnd *sc) { struct tcm_loop_hba *tl_hba; - struct tcm_loop_nexus *tl_nexus; struct tcm_loop_tpg *tl_tpg; int ret = FAILED; @@ -330,20 +325,9 @@ static int tcm_loop_device_reset(struct scsi_cmnd *sc) * Locate the tcm_loop_hba_t pointer */ tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host); - /* - * Locate the tl_nexus and se_sess pointers - */ - tl_nexus = tl_hba->tl_nexus; - if (!tl_nexus) { - pr_err("Unable to perform device reset without" - " active I_T Nexus\n"); - return FAILED; - } - /* - * Locate the tl_tpg pointer from TargetID in sc->device->id - */ tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id]; - ret = tcm_loop_issue_tmr(tl_tpg, tl_nexus, sc->device->lun, + + ret = tcm_loop_issue_tmr(tl_tpg, sc->device->lun, 0, TMR_LUN_RESET); return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED; } @@ -940,8 +924,8 @@ static int tcm_loop_make_nexus( struct tcm_loop_nexus *tl_nexus; int ret = -ENOMEM; - if (tl_tpg->tl_hba->tl_nexus) { - pr_debug("tl_tpg->tl_hba->tl_nexus already exists\n"); + if (tl_tpg->tl_nexus) { + pr_debug("tl_tpg->tl_nexus already exists\n"); return -EEXIST; } se_tpg = &tl_tpg->tl_se_tpg; @@ -976,7 +960,7 @@ static int tcm_loop_make_nexus( */ __transport_register_session(se_tpg, tl_nexus->se_sess->se_node_acl, tl_nexus->se_sess, tl_nexus); - tl_tpg->tl_hba->tl_nexus = tl_nexus; + tl_tpg->tl_nexus = tl_nexus; pr_debug("TCM_Loop_ConfigFS: Established I_T Nexus to emulated" " %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba), name); @@ -992,12 +976,8 @@ static int tcm_loop_drop_nexus( { struct se_session *se_sess; struct tcm_loop_nexus *tl_nexus; - struct tcm_loop_hba *tl_hba = tpg->tl_hba; - if (!tl_hba) - return -ENODEV; - - tl_nexus = tl_hba->tl_nexus; + tl_nexus = tpg->tl_nexus; if (!tl_nexus) return -ENODEV; @@ -1013,13 +993,13 @@ static int tcm_loop_drop_nexus( } pr_debug("TCM_Loop_ConfigFS: Removing I_T Nexus to emulated" - " %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba), + " %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tpg->tl_hba), tl_nexus->se_sess->se_node_acl->initiatorname); /* * Release the SCSI I_T Nexus to the emulated SAS Target Port */ transport_deregister_session(tl_nexus->se_sess); - tpg->tl_hba->tl_nexus = NULL; + tpg->tl_nexus = NULL; kfree(tl_nexus); return 0; } @@ -1035,7 +1015,7 @@ static ssize_t tcm_loop_tpg_show_nexus( struct tcm_loop_nexus *tl_nexus; ssize_t ret; - tl_nexus = tl_tpg->tl_hba->tl_nexus; + tl_nexus = tl_tpg->tl_nexus; if (!tl_nexus) return -ENODEV; diff --git a/drivers/target/loopback/tcm_loop.h b/drivers/target/loopback/tcm_loop.h index 54c59d0b6608..6ae49f272ba6 100644 --- a/drivers/target/loopback/tcm_loop.h +++ b/drivers/target/loopback/tcm_loop.h @@ -27,11 +27,6 @@ struct tcm_loop_tmr { }; struct tcm_loop_nexus { - int it_nexus_active; - /* - * Pointer to Linux/SCSI HBA from linux/include/scsi_host.h - */ - struct scsi_host *sh; /* * Pointer to TCM session for I_T Nexus */ @@ -51,6 +46,7 @@ struct tcm_loop_tpg { atomic_t tl_tpg_port_count; struct se_portal_group tl_se_tpg; struct tcm_loop_hba *tl_hba; + struct tcm_loop_nexus *tl_nexus; }; struct tcm_loop_hba { @@ -59,7 +55,6 @@ struct tcm_loop_hba { struct se_hba_s *se_hba; struct se_lun *tl_hba_lun; struct se_port *tl_hba_lun_sep; - struct tcm_loop_nexus *tl_nexus; struct device dev; struct Scsi_Host *sh; struct tcm_loop_tpg tl_hba_tpgs[TL_TPGS_PER_HBA]; diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index 79f9296a08ae..75d89adfccc0 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -50,6 +50,19 @@ #include "target_core_rd.h" #include "target_core_xcopy.h" +#define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ +static void target_core_setup_##_name##_cit(struct se_subsystem_api *sa) \ +{ \ + struct target_backend_cits *tbc = &sa->tb_cits; \ + struct config_item_type *cit = &tbc->tb_##_name##_cit; \ + \ + cit->ct_item_ops = _item_ops; \ + cit->ct_group_ops = _group_ops; \ + cit->ct_attrs = _attrs; \ + cit->ct_owner = sa->owner; \ + pr_debug("Setup generic %s\n", __stringify(_name)); \ +} + extern struct t10_alua_lu_gp *default_lu_gp; static LIST_HEAD(g_tf_list); @@ -126,48 +139,57 @@ static struct config_group *target_core_register_fabric( pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" " %s\n", group, name); - /* - * Below are some hardcoded request_module() calls to automatically - * local fabric modules when the following is called: - * - * mkdir -p /sys/kernel/config/target/$MODULE_NAME - * - * Note that this does not limit which TCM fabric module can be - * registered, but simply provids auto loading logic for modules with - * mkdir(2) system calls with known TCM fabric modules. - */ - if (!strncmp(name, "iscsi", 5)) { + + tf = target_core_get_fabric(name); + if (!tf) { + pr_err("target_core_register_fabric() trying autoload for %s\n", + name); + /* - * Automatically load the LIO Target fabric module when the - * following is called: + * Below are some hardcoded request_module() calls to automatically + * local fabric modules when the following is called: * - * mkdir -p $CONFIGFS/target/iscsi - */ - ret = request_module("iscsi_target_mod"); - if (ret < 0) { - pr_err("request_module() failed for" - " iscsi_target_mod.ko: %d\n", ret); - return ERR_PTR(-EINVAL); - } - } else if (!strncmp(name, "loopback", 8)) { - /* - * Automatically load the tcm_loop fabric module when the - * following is called: + * mkdir -p /sys/kernel/config/target/$MODULE_NAME * - * mkdir -p $CONFIGFS/target/loopback + * Note that this does not limit which TCM fabric module can be + * registered, but simply provids auto loading logic for modules with + * mkdir(2) system calls with known TCM fabric modules. */ - ret = request_module("tcm_loop"); - if (ret < 0) { - pr_err("request_module() failed for" - " tcm_loop.ko: %d\n", ret); - return ERR_PTR(-EINVAL); + + if (!strncmp(name, "iscsi", 5)) { + /* + * Automatically load the LIO Target fabric module when the + * following is called: + * + * mkdir -p $CONFIGFS/target/iscsi + */ + ret = request_module("iscsi_target_mod"); + if (ret < 0) { + pr_err("request_module() failed for" + " iscsi_target_mod.ko: %d\n", ret); + return ERR_PTR(-EINVAL); + } + } else if (!strncmp(name, "loopback", 8)) { + /* + * Automatically load the tcm_loop fabric module when the + * following is called: + * + * mkdir -p $CONFIGFS/target/loopback + */ + ret = request_module("tcm_loop"); + if (ret < 0) { + pr_err("request_module() failed for" + " tcm_loop.ko: %d\n", ret); + return ERR_PTR(-EINVAL); + } } + + tf = target_core_get_fabric(name); } - tf = target_core_get_fabric(name); if (!tf) { pr_err("target_core_get_fabric() failed for %s\n", - name); + name); return ERR_PTR(-EINVAL); } pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" @@ -562,198 +584,21 @@ EXPORT_SYMBOL(target_fabric_configfs_deregister); // Stop functions called by external Target Fabrics Modules //############################################################################*/ -/* Start functions for struct config_item_type target_core_dev_attrib_cit */ - -#define DEF_DEV_ATTRIB_SHOW(_name) \ -static ssize_t target_core_dev_show_attr_##_name( \ - struct se_dev_attrib *da, \ - char *page) \ -{ \ - return snprintf(page, PAGE_SIZE, "%u\n", \ - (u32)da->da_dev->dev_attrib._name); \ -} - -#define DEF_DEV_ATTRIB_STORE(_name) \ -static ssize_t target_core_dev_store_attr_##_name( \ - struct se_dev_attrib *da, \ - const char *page, \ - size_t count) \ -{ \ - unsigned long val; \ - int ret; \ - \ - ret = kstrtoul(page, 0, &val); \ - if (ret < 0) { \ - pr_err("kstrtoul() failed with" \ - " ret: %d\n", ret); \ - return -EINVAL; \ - } \ - ret = se_dev_set_##_name(da->da_dev, (u32)val); \ - \ - return (!ret) ? count : -EINVAL; \ -} - -#define DEF_DEV_ATTRIB(_name) \ -DEF_DEV_ATTRIB_SHOW(_name); \ -DEF_DEV_ATTRIB_STORE(_name); - -#define DEF_DEV_ATTRIB_RO(_name) \ -DEF_DEV_ATTRIB_SHOW(_name); +/* Start functions for struct config_item_type tb_dev_attrib_cit */ CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); -#define SE_DEV_ATTR(_name, _mode) \ -static struct target_core_dev_attrib_attribute \ - target_core_dev_attrib_##_name = \ - __CONFIGFS_EATTR(_name, _mode, \ - target_core_dev_show_attr_##_name, \ - target_core_dev_store_attr_##_name); - -#define SE_DEV_ATTR_RO(_name); \ -static struct target_core_dev_attrib_attribute \ - target_core_dev_attrib_##_name = \ - __CONFIGFS_EATTR_RO(_name, \ - target_core_dev_show_attr_##_name); - -DEF_DEV_ATTRIB(emulate_model_alias); -SE_DEV_ATTR(emulate_model_alias, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_dpo); -SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_fua_write); -SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_fua_read); -SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_write_cache); -SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); -SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_tas); -SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_tpu); -SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_tpws); -SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_caw); -SE_DEV_ATTR(emulate_caw, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_3pc); -SE_DEV_ATTR(emulate_3pc, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(pi_prot_type); -SE_DEV_ATTR(pi_prot_type, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB_RO(hw_pi_prot_type); -SE_DEV_ATTR_RO(hw_pi_prot_type); - -DEF_DEV_ATTRIB(pi_prot_format); -SE_DEV_ATTR(pi_prot_format, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(enforce_pr_isids); -SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(is_nonrot); -SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_rest_reord); -SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(force_pr_aptpl); -SE_DEV_ATTR(force_pr_aptpl, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB_RO(hw_block_size); -SE_DEV_ATTR_RO(hw_block_size); - -DEF_DEV_ATTRIB(block_size); -SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB_RO(hw_max_sectors); -SE_DEV_ATTR_RO(hw_max_sectors); - -DEF_DEV_ATTRIB(fabric_max_sectors); -SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(optimal_sectors); -SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB_RO(hw_queue_depth); -SE_DEV_ATTR_RO(hw_queue_depth); - -DEF_DEV_ATTRIB(queue_depth); -SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(max_unmap_lba_count); -SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(max_unmap_block_desc_count); -SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(unmap_granularity); -SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(unmap_granularity_alignment); -SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(max_write_same_len); -SE_DEV_ATTR(max_write_same_len, S_IRUGO | S_IWUSR); - CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); -static struct configfs_attribute *target_core_dev_attrib_attrs[] = { - &target_core_dev_attrib_emulate_model_alias.attr, - &target_core_dev_attrib_emulate_dpo.attr, - &target_core_dev_attrib_emulate_fua_write.attr, - &target_core_dev_attrib_emulate_fua_read.attr, - &target_core_dev_attrib_emulate_write_cache.attr, - &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, - &target_core_dev_attrib_emulate_tas.attr, - &target_core_dev_attrib_emulate_tpu.attr, - &target_core_dev_attrib_emulate_tpws.attr, - &target_core_dev_attrib_emulate_caw.attr, - &target_core_dev_attrib_emulate_3pc.attr, - &target_core_dev_attrib_pi_prot_type.attr, - &target_core_dev_attrib_hw_pi_prot_type.attr, - &target_core_dev_attrib_pi_prot_format.attr, - &target_core_dev_attrib_enforce_pr_isids.attr, - &target_core_dev_attrib_force_pr_aptpl.attr, - &target_core_dev_attrib_is_nonrot.attr, - &target_core_dev_attrib_emulate_rest_reord.attr, - &target_core_dev_attrib_hw_block_size.attr, - &target_core_dev_attrib_block_size.attr, - &target_core_dev_attrib_hw_max_sectors.attr, - &target_core_dev_attrib_fabric_max_sectors.attr, - &target_core_dev_attrib_optimal_sectors.attr, - &target_core_dev_attrib_hw_queue_depth.attr, - &target_core_dev_attrib_queue_depth.attr, - &target_core_dev_attrib_max_unmap_lba_count.attr, - &target_core_dev_attrib_max_unmap_block_desc_count.attr, - &target_core_dev_attrib_unmap_granularity.attr, - &target_core_dev_attrib_unmap_granularity_alignment.attr, - &target_core_dev_attrib_max_write_same_len.attr, - NULL, -}; - static struct configfs_item_operations target_core_dev_attrib_ops = { .show_attribute = target_core_dev_attrib_attr_show, .store_attribute = target_core_dev_attrib_attr_store, }; -static struct config_item_type target_core_dev_attrib_cit = { - .ct_item_ops = &target_core_dev_attrib_ops, - .ct_attrs = target_core_dev_attrib_attrs, - .ct_owner = THIS_MODULE, -}; +TB_CIT_SETUP(dev_attrib, &target_core_dev_attrib_ops, NULL, NULL); -/* End functions for struct config_item_type target_core_dev_attrib_cit */ +/* End functions for struct config_item_type tb_dev_attrib_cit */ -/* Start functions for struct config_item_type target_core_dev_wwn_cit */ +/* Start functions for struct config_item_type tb_dev_wwn_cit */ CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); #define SE_DEV_WWN_ATTR(_name, _mode) \ @@ -984,15 +829,11 @@ static struct configfs_item_operations target_core_dev_wwn_ops = { .store_attribute = target_core_dev_wwn_attr_store, }; -static struct config_item_type target_core_dev_wwn_cit = { - .ct_item_ops = &target_core_dev_wwn_ops, - .ct_attrs = target_core_dev_wwn_attrs, - .ct_owner = THIS_MODULE, -}; +TB_CIT_SETUP(dev_wwn, &target_core_dev_wwn_ops, NULL, target_core_dev_wwn_attrs); -/* End functions for struct config_item_type target_core_dev_wwn_cit */ +/* End functions for struct config_item_type tb_dev_wwn_cit */ -/* Start functions for struct config_item_type target_core_dev_pr_cit */ +/* Start functions for struct config_item_type tb_dev_pr_cit */ CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); #define SE_DEV_PR_ATTR(_name, _mode) \ @@ -1453,15 +1294,11 @@ static struct configfs_item_operations target_core_dev_pr_ops = { .store_attribute = target_core_dev_pr_attr_store, }; -static struct config_item_type target_core_dev_pr_cit = { - .ct_item_ops = &target_core_dev_pr_ops, - .ct_attrs = target_core_dev_pr_attrs, - .ct_owner = THIS_MODULE, -}; +TB_CIT_SETUP(dev_pr, &target_core_dev_pr_ops, NULL, target_core_dev_pr_attrs); -/* End functions for struct config_item_type target_core_dev_pr_cit */ +/* End functions for struct config_item_type tb_dev_pr_cit */ -/* Start functions for struct config_item_type target_core_dev_cit */ +/* Start functions for struct config_item_type tb_dev_cit */ static ssize_t target_core_show_dev_info(void *p, char *page) { @@ -1925,7 +1762,7 @@ static struct target_core_configfs_attribute target_core_attr_dev_lba_map = { .store = target_core_store_dev_lba_map, }; -static struct configfs_attribute *lio_core_dev_attrs[] = { +static struct configfs_attribute *target_core_dev_attrs[] = { &target_core_attr_dev_info.attr, &target_core_attr_dev_control.attr, &target_core_attr_dev_alias.attr, @@ -1984,13 +1821,9 @@ static struct configfs_item_operations target_core_dev_item_ops = { .store_attribute = target_core_dev_store, }; -static struct config_item_type target_core_dev_cit = { - .ct_item_ops = &target_core_dev_item_ops, - .ct_attrs = lio_core_dev_attrs, - .ct_owner = THIS_MODULE, -}; +TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); -/* End functions for struct config_item_type target_core_dev_cit */ +/* End functions for struct config_item_type tb_dev_cit */ /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ @@ -2670,7 +2503,7 @@ static struct config_item_type target_core_alua_tg_pt_gp_cit = { /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ -/* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ +/* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ static struct config_group *target_core_alua_create_tg_pt_gp( struct config_group *group, @@ -2721,12 +2554,9 @@ static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { .drop_item = &target_core_alua_drop_tg_pt_gp, }; -static struct config_item_type target_core_alua_tg_pt_gps_cit = { - .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, - .ct_owner = THIS_MODULE, -}; +TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); -/* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ +/* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ /* Start functions for struct config_item_type target_core_alua_cit */ @@ -2744,7 +2574,7 @@ static struct config_item_type target_core_alua_cit = { /* End functions for struct config_item_type target_core_alua_cit */ -/* Start functions for struct config_item_type target_core_stat_cit */ +/* Start functions for struct config_item_type tb_dev_stat_cit */ static struct config_group *target_core_stat_mkdir( struct config_group *group, @@ -2765,12 +2595,9 @@ static struct configfs_group_operations target_core_stat_group_ops = { .drop_item = &target_core_stat_rmdir, }; -static struct config_item_type target_core_stat_cit = { - .ct_group_ops = &target_core_stat_group_ops, - .ct_owner = THIS_MODULE, -}; +TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); -/* End functions for struct config_item_type target_core_stat_cit */ +/* End functions for struct config_item_type tb_dev_stat_cit */ /* Start functions for struct config_item_type target_core_hba_cit */ @@ -2806,17 +2633,17 @@ static struct config_group *target_core_make_subdev( if (!dev_cg->default_groups) goto out_free_device; - config_group_init_type_name(dev_cg, name, &target_core_dev_cit); + config_group_init_type_name(dev_cg, name, &t->tb_cits.tb_dev_cit); config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", - &target_core_dev_attrib_cit); + &t->tb_cits.tb_dev_attrib_cit); config_group_init_type_name(&dev->dev_pr_group, "pr", - &target_core_dev_pr_cit); + &t->tb_cits.tb_dev_pr_cit); config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", - &target_core_dev_wwn_cit); + &t->tb_cits.tb_dev_wwn_cit); config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, - "alua", &target_core_alua_tg_pt_gps_cit); + "alua", &t->tb_cits.tb_dev_alua_tg_pt_gps_cit); config_group_init_type_name(&dev->dev_stat_grps.stat_group, - "statistics", &target_core_stat_cit); + "statistics", &t->tb_cits.tb_dev_stat_cit); dev_cg->default_groups[0] = &dev->dev_attrib.da_group; dev_cg->default_groups[1] = &dev->dev_pr_group; @@ -3110,6 +2937,17 @@ static struct config_item_type target_core_cit = { /* Stop functions for struct config_item_type target_core_hba_cit */ +void target_core_setup_sub_cits(struct se_subsystem_api *sa) +{ + target_core_setup_dev_cit(sa); + target_core_setup_dev_attrib_cit(sa); + target_core_setup_dev_pr_cit(sa); + target_core_setup_dev_wwn_cit(sa); + target_core_setup_dev_alua_tg_pt_gps_cit(sa); + target_core_setup_dev_stat_cit(sa); +} +EXPORT_SYMBOL(target_core_setup_sub_cits); + static int __init target_core_init_configfs(void) { struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index c45f9e907e44..7653cfb027a2 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -659,6 +659,7 @@ int se_dev_set_max_unmap_lba_count( dev, dev->dev_attrib.max_unmap_lba_count); return 0; } +EXPORT_SYMBOL(se_dev_set_max_unmap_lba_count); int se_dev_set_max_unmap_block_desc_count( struct se_device *dev, @@ -670,6 +671,7 @@ int se_dev_set_max_unmap_block_desc_count( dev, dev->dev_attrib.max_unmap_block_desc_count); return 0; } +EXPORT_SYMBOL(se_dev_set_max_unmap_block_desc_count); int se_dev_set_unmap_granularity( struct se_device *dev, @@ -680,6 +682,7 @@ int se_dev_set_unmap_granularity( dev, dev->dev_attrib.unmap_granularity); return 0; } +EXPORT_SYMBOL(se_dev_set_unmap_granularity); int se_dev_set_unmap_granularity_alignment( struct se_device *dev, @@ -690,6 +693,7 @@ int se_dev_set_unmap_granularity_alignment( dev, dev->dev_attrib.unmap_granularity_alignment); return 0; } +EXPORT_SYMBOL(se_dev_set_unmap_granularity_alignment); int se_dev_set_max_write_same_len( struct se_device *dev, @@ -700,6 +704,7 @@ int se_dev_set_max_write_same_len( dev, dev->dev_attrib.max_write_same_len); return 0; } +EXPORT_SYMBOL(se_dev_set_max_write_same_len); static void dev_set_t10_wwn_model_alias(struct se_device *dev) { @@ -738,6 +743,7 @@ int se_dev_set_emulate_model_alias(struct se_device *dev, int flag) return 0; } +EXPORT_SYMBOL(se_dev_set_emulate_model_alias); int se_dev_set_emulate_dpo(struct se_device *dev, int flag) { @@ -753,6 +759,7 @@ int se_dev_set_emulate_dpo(struct se_device *dev, int flag) return 0; } +EXPORT_SYMBOL(se_dev_set_emulate_dpo); int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) { @@ -760,17 +767,12 @@ int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) pr_err("Illegal value %d\n", flag); return -EINVAL; } - - if (flag && - dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { - pr_err("emulate_fua_write not supported for pSCSI\n"); - return -EINVAL; - } dev->dev_attrib.emulate_fua_write = flag; pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", dev, dev->dev_attrib.emulate_fua_write); return 0; } +EXPORT_SYMBOL(se_dev_set_emulate_fua_write); int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) { @@ -786,6 +788,7 @@ int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) return 0; } +EXPORT_SYMBOL(se_dev_set_emulate_fua_read); int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) { @@ -794,11 +797,6 @@ int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) return -EINVAL; } if (flag && - dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { - pr_err("emulate_write_cache not supported for pSCSI\n"); - return -EINVAL; - } - if (flag && dev->transport->get_write_cache) { pr_err("emulate_write_cache not supported for this device\n"); return -EINVAL; @@ -809,6 +807,7 @@ int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) dev, dev->dev_attrib.emulate_write_cache); return 0; } +EXPORT_SYMBOL(se_dev_set_emulate_write_cache); int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) { @@ -829,6 +828,7 @@ int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) return 0; } +EXPORT_SYMBOL(se_dev_set_emulate_ua_intlck_ctrl); int se_dev_set_emulate_tas(struct se_device *dev, int flag) { @@ -849,6 +849,7 @@ int se_dev_set_emulate_tas(struct se_device *dev, int flag) return 0; } +EXPORT_SYMBOL(se_dev_set_emulate_tas); int se_dev_set_emulate_tpu(struct se_device *dev, int flag) { @@ -870,6 +871,7 @@ int se_dev_set_emulate_tpu(struct se_device *dev, int flag) dev, flag); return 0; } +EXPORT_SYMBOL(se_dev_set_emulate_tpu); int se_dev_set_emulate_tpws(struct se_device *dev, int flag) { @@ -891,6 +893,7 @@ int se_dev_set_emulate_tpws(struct se_device *dev, int flag) dev, flag); return 0; } +EXPORT_SYMBOL(se_dev_set_emulate_tpws); int se_dev_set_emulate_caw(struct se_device *dev, int flag) { @@ -904,6 +907,7 @@ int se_dev_set_emulate_caw(struct se_device *dev, int flag) return 0; } +EXPORT_SYMBOL(se_dev_set_emulate_caw); int se_dev_set_emulate_3pc(struct se_device *dev, int flag) { @@ -917,6 +921,7 @@ int se_dev_set_emulate_3pc(struct se_device *dev, int flag) return 0; } +EXPORT_SYMBOL(se_dev_set_emulate_3pc); int se_dev_set_pi_prot_type(struct se_device *dev, int flag) { @@ -970,6 +975,7 @@ int se_dev_set_pi_prot_type(struct se_device *dev, int flag) return 0; } +EXPORT_SYMBOL(se_dev_set_pi_prot_type); int se_dev_set_pi_prot_format(struct se_device *dev, int flag) { @@ -1005,6 +1011,7 @@ int se_dev_set_pi_prot_format(struct se_device *dev, int flag) return 0; } +EXPORT_SYMBOL(se_dev_set_pi_prot_format); int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) { @@ -1017,6 +1024,7 @@ int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) (dev->dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); return 0; } +EXPORT_SYMBOL(se_dev_set_enforce_pr_isids); int se_dev_set_force_pr_aptpl(struct se_device *dev, int flag) { @@ -1034,6 +1042,7 @@ int se_dev_set_force_pr_aptpl(struct se_device *dev, int flag) pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", dev, flag); return 0; } +EXPORT_SYMBOL(se_dev_set_force_pr_aptpl); int se_dev_set_is_nonrot(struct se_device *dev, int flag) { @@ -1046,6 +1055,7 @@ int se_dev_set_is_nonrot(struct se_device *dev, int flag) dev, flag); return 0; } +EXPORT_SYMBOL(se_dev_set_is_nonrot); int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) { @@ -1058,6 +1068,7 @@ int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag); return 0; } +EXPORT_SYMBOL(se_dev_set_emulate_rest_reord); /* * Note, this can only be called on unexported SE Device Object. @@ -1076,31 +1087,21 @@ int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) return -EINVAL; } - if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { + if (queue_depth > dev->dev_attrib.queue_depth) { if (queue_depth > dev->dev_attrib.hw_queue_depth) { - pr_err("dev[%p]: Passed queue_depth: %u" - " exceeds TCM/SE_Device TCQ: %u\n", - dev, queue_depth, + pr_err("dev[%p]: Passed queue_depth:" + " %u exceeds TCM/SE_Device MAX" + " TCQ: %u\n", dev, queue_depth, dev->dev_attrib.hw_queue_depth); return -EINVAL; } - } else { - if (queue_depth > dev->dev_attrib.queue_depth) { - if (queue_depth > dev->dev_attrib.hw_queue_depth) { - pr_err("dev[%p]: Passed queue_depth:" - " %u exceeds TCM/SE_Device MAX" - " TCQ: %u\n", dev, queue_depth, - dev->dev_attrib.hw_queue_depth); - return -EINVAL; - } - } } - dev->dev_attrib.queue_depth = dev->queue_depth = queue_depth; pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", dev, queue_depth); return 0; } +EXPORT_SYMBOL(se_dev_set_queue_depth); int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors) { @@ -1123,22 +1124,12 @@ int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors) DA_STATUS_MAX_SECTORS_MIN); return -EINVAL; } - if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { - if (fabric_max_sectors > dev->dev_attrib.hw_max_sectors) { - pr_err("dev[%p]: Passed fabric_max_sectors: %u" - " greater than TCM/SE_Device max_sectors:" - " %u\n", dev, fabric_max_sectors, - dev->dev_attrib.hw_max_sectors); - return -EINVAL; - } - } else { - if (fabric_max_sectors > DA_STATUS_MAX_SECTORS_MAX) { - pr_err("dev[%p]: Passed fabric_max_sectors: %u" - " greater than DA_STATUS_MAX_SECTORS_MAX:" - " %u\n", dev, fabric_max_sectors, - DA_STATUS_MAX_SECTORS_MAX); - return -EINVAL; - } + if (fabric_max_sectors > DA_STATUS_MAX_SECTORS_MAX) { + pr_err("dev[%p]: Passed fabric_max_sectors: %u" + " greater than DA_STATUS_MAX_SECTORS_MAX:" + " %u\n", dev, fabric_max_sectors, + DA_STATUS_MAX_SECTORS_MAX); + return -EINVAL; } /* * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() @@ -1155,6 +1146,7 @@ int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors) dev, fabric_max_sectors); return 0; } +EXPORT_SYMBOL(se_dev_set_fabric_max_sectors); int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) { @@ -1164,11 +1156,6 @@ int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) dev, dev->export_count); return -EINVAL; } - if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { - pr_err("dev[%p]: Passed optimal_sectors cannot be" - " changed for TCM/pSCSI\n", dev); - return -EINVAL; - } if (optimal_sectors > dev->dev_attrib.fabric_max_sectors) { pr_err("dev[%p]: Passed optimal_sectors %u cannot be" " greater than fabric_max_sectors: %u\n", dev, @@ -1181,6 +1168,7 @@ int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) dev, optimal_sectors); return 0; } +EXPORT_SYMBOL(se_dev_set_optimal_sectors); int se_dev_set_block_size(struct se_device *dev, u32 block_size) { @@ -1201,13 +1189,6 @@ int se_dev_set_block_size(struct se_device *dev, u32 block_size) return -EINVAL; } - if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { - pr_err("dev[%p]: Not allowed to change block_size for" - " Physical Device, use for Linux/SCSI to change" - " block_size for underlying hardware\n", dev); - return -EINVAL; - } - dev->dev_attrib.block_size = block_size; pr_debug("dev[%p]: SE Device block_size changed to %u\n", dev, block_size); @@ -1218,6 +1199,7 @@ int se_dev_set_block_size(struct se_device *dev, u32 block_size) return 0; } +EXPORT_SYMBOL(se_dev_set_block_size); struct se_lun *core_dev_add_lun( struct se_portal_group *tpg, diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c index 72c83d98662b..c2aea099ea4a 100644 --- a/drivers/target/target_core_file.c +++ b/drivers/target/target_core_file.c @@ -37,6 +37,7 @@ #include <target/target_core_base.h> #include <target/target_core_backend.h> +#include <target/target_core_backend_configfs.h> #include "target_core_file.h" @@ -934,6 +935,42 @@ fd_parse_cdb(struct se_cmd *cmd) return sbc_parse_cdb(cmd, &fd_sbc_ops); } +DEF_TB_DEFAULT_ATTRIBS(fileio); + +static struct configfs_attribute *fileio_backend_dev_attrs[] = { + &fileio_dev_attrib_emulate_model_alias.attr, + &fileio_dev_attrib_emulate_dpo.attr, + &fileio_dev_attrib_emulate_fua_write.attr, + &fileio_dev_attrib_emulate_fua_read.attr, + &fileio_dev_attrib_emulate_write_cache.attr, + &fileio_dev_attrib_emulate_ua_intlck_ctrl.attr, + &fileio_dev_attrib_emulate_tas.attr, + &fileio_dev_attrib_emulate_tpu.attr, + &fileio_dev_attrib_emulate_tpws.attr, + &fileio_dev_attrib_emulate_caw.attr, + &fileio_dev_attrib_emulate_3pc.attr, + &fileio_dev_attrib_pi_prot_type.attr, + &fileio_dev_attrib_hw_pi_prot_type.attr, + &fileio_dev_attrib_pi_prot_format.attr, + &fileio_dev_attrib_enforce_pr_isids.attr, + &fileio_dev_attrib_is_nonrot.attr, + &fileio_dev_attrib_emulate_rest_reord.attr, + &fileio_dev_attrib_force_pr_aptpl.attr, + &fileio_dev_attrib_hw_block_size.attr, + &fileio_dev_attrib_block_size.attr, + &fileio_dev_attrib_hw_max_sectors.attr, + &fileio_dev_attrib_fabric_max_sectors.attr, + &fileio_dev_attrib_optimal_sectors.attr, + &fileio_dev_attrib_hw_queue_depth.attr, + &fileio_dev_attrib_queue_depth.attr, + &fileio_dev_attrib_max_unmap_lba_count.attr, + &fileio_dev_attrib_max_unmap_block_desc_count.attr, + &fileio_dev_attrib_unmap_granularity.attr, + &fileio_dev_attrib_unmap_granularity_alignment.attr, + &fileio_dev_attrib_max_write_same_len.attr, + NULL, +}; + static struct se_subsystem_api fileio_template = { .name = "fileio", .inquiry_prod = "FILEIO", @@ -957,6 +994,11 @@ static struct se_subsystem_api fileio_template = { static int __init fileio_module_init(void) { + struct target_backend_cits *tbc = &fileio_template.tb_cits; + + target_core_setup_sub_cits(&fileio_template); + tbc->tb_dev_attrib_cit.ct_attrs = fileio_backend_dev_attrs; + return transport_subsystem_register(&fileio_template); } diff --git a/drivers/target/target_core_hba.c b/drivers/target/target_core_hba.c index a25051a37dd7..ff95f95dcd13 100644 --- a/drivers/target/target_core_hba.c +++ b/drivers/target/target_core_hba.c @@ -36,6 +36,7 @@ #include <target/target_core_base.h> #include <target/target_core_backend.h> #include <target/target_core_fabric.h> +#include <target/target_core_configfs.h> #include "target_core_internal.h" @@ -137,8 +138,7 @@ core_alloc_hba(const char *plugin_name, u32 plugin_dep_id, u32 hba_flags) return hba; out_module_put: - if (hba->transport->owner) - module_put(hba->transport->owner); + module_put(hba->transport->owner); hba->transport = NULL; out_free_hba: kfree(hba); @@ -159,8 +159,7 @@ core_delete_hba(struct se_hba *hba) pr_debug("CORE_HBA[%d] - Detached HBA from Generic Target" " Core\n", hba->hba_id); - if (hba->transport->owner) - module_put(hba->transport->owner); + module_put(hba->transport->owner); hba->transport = NULL; kfree(hba); diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 7e6b857c6b3f..3efff94fbd97 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -41,6 +41,7 @@ #include <target/target_core_base.h> #include <target/target_core_backend.h> +#include <target/target_core_backend_configfs.h> #include "target_core_iblock.h" @@ -858,6 +859,42 @@ static bool iblock_get_write_cache(struct se_device *dev) return q->flush_flags & REQ_FLUSH; } +DEF_TB_DEFAULT_ATTRIBS(iblock); + +static struct configfs_attribute *iblock_backend_dev_attrs[] = { + &iblock_dev_attrib_emulate_model_alias.attr, + &iblock_dev_attrib_emulate_dpo.attr, + &iblock_dev_attrib_emulate_fua_write.attr, + &iblock_dev_attrib_emulate_fua_read.attr, + &iblock_dev_attrib_emulate_write_cache.attr, + &iblock_dev_attrib_emulate_ua_intlck_ctrl.attr, + &iblock_dev_attrib_emulate_tas.attr, + &iblock_dev_attrib_emulate_tpu.attr, + &iblock_dev_attrib_emulate_tpws.attr, + &iblock_dev_attrib_emulate_caw.attr, + &iblock_dev_attrib_emulate_3pc.attr, + &iblock_dev_attrib_pi_prot_type.attr, + &iblock_dev_attrib_hw_pi_prot_type.attr, + &iblock_dev_attrib_pi_prot_format.attr, + &iblock_dev_attrib_enforce_pr_isids.attr, + &iblock_dev_attrib_is_nonrot.attr, + &iblock_dev_attrib_emulate_rest_reord.attr, + &iblock_dev_attrib_force_pr_aptpl.attr, + &iblock_dev_attrib_hw_block_size.attr, + &iblock_dev_attrib_block_size.attr, + &iblock_dev_attrib_hw_max_sectors.attr, + &iblock_dev_attrib_fabric_max_sectors.attr, + &iblock_dev_attrib_optimal_sectors.attr, + &iblock_dev_attrib_hw_queue_depth.attr, + &iblock_dev_attrib_queue_depth.attr, + &iblock_dev_attrib_max_unmap_lba_count.attr, + &iblock_dev_attrib_max_unmap_block_desc_count.attr, + &iblock_dev_attrib_unmap_granularity.attr, + &iblock_dev_attrib_unmap_granularity_alignment.attr, + &iblock_dev_attrib_max_write_same_len.attr, + NULL, +}; + static struct se_subsystem_api iblock_template = { .name = "iblock", .inquiry_prod = "IBLOCK", @@ -883,6 +920,11 @@ static struct se_subsystem_api iblock_template = { static int __init iblock_module_init(void) { + struct target_backend_cits *tbc = &iblock_template.tb_cits; + + target_core_setup_sub_cits(&iblock_template); + tbc->tb_dev_attrib_cit.ct_attrs = iblock_backend_dev_attrs; + return transport_subsystem_register(&iblock_template); } diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h index e31f42f369ff..60381db90026 100644 --- a/drivers/target/target_core_internal.h +++ b/drivers/target/target_core_internal.h @@ -18,34 +18,6 @@ int core_dev_export(struct se_device *, struct se_portal_group *, struct se_lun *); void core_dev_unexport(struct se_device *, struct se_portal_group *, struct se_lun *); -int se_dev_set_task_timeout(struct se_device *, u32); -int se_dev_set_max_unmap_lba_count(struct se_device *, u32); -int se_dev_set_max_unmap_block_desc_count(struct se_device *, u32); -int se_dev_set_unmap_granularity(struct se_device *, u32); -int se_dev_set_unmap_granularity_alignment(struct se_device *, u32); -int se_dev_set_max_write_same_len(struct se_device *, u32); -int se_dev_set_emulate_model_alias(struct se_device *, int); -int se_dev_set_emulate_dpo(struct se_device *, int); -int se_dev_set_emulate_fua_write(struct se_device *, int); -int se_dev_set_emulate_fua_read(struct se_device *, int); -int se_dev_set_emulate_write_cache(struct se_device *, int); -int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *, int); -int se_dev_set_emulate_tas(struct se_device *, int); -int se_dev_set_emulate_tpu(struct se_device *, int); -int se_dev_set_emulate_tpws(struct se_device *, int); -int se_dev_set_emulate_caw(struct se_device *, int); -int se_dev_set_emulate_3pc(struct se_device *, int); -int se_dev_set_pi_prot_type(struct se_device *, int); -int se_dev_set_pi_prot_format(struct se_device *, int); -int se_dev_set_enforce_pr_isids(struct se_device *, int); -int se_dev_set_force_pr_aptpl(struct se_device *, int); -int se_dev_set_is_nonrot(struct se_device *, int); -int se_dev_set_emulate_rest_reord(struct se_device *dev, int); -int se_dev_set_queue_depth(struct se_device *, u32); -int se_dev_set_max_sectors(struct se_device *, u32); -int se_dev_set_fabric_max_sectors(struct se_device *, u32); -int se_dev_set_optimal_sectors(struct se_device *, u32); -int se_dev_set_block_size(struct se_device *, u32); struct se_lun *core_dev_add_lun(struct se_portal_group *, struct se_device *, u32); void core_dev_del_lun(struct se_portal_group *, struct se_lun *); struct se_lun *core_get_lun_from_tpg(struct se_portal_group *, u32); diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index 4c261c33cf55..d56f2aaba9af 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -76,7 +76,7 @@ enum preempt_type { }; static void __core_scsi3_complete_pro_release(struct se_device *, struct se_node_acl *, - struct t10_pr_registration *, int); + struct t10_pr_registration *, int, int); static sense_reason_t target_scsi2_reservation_check(struct se_cmd *cmd) @@ -1177,7 +1177,7 @@ static int core_scsi3_check_implicit_release( * service action with the SERVICE ACTION RESERVATION KEY * field set to zero (see 5.7.11.3). */ - __core_scsi3_complete_pro_release(dev, nacl, pr_reg, 0); + __core_scsi3_complete_pro_release(dev, nacl, pr_reg, 0, 1); ret = 1; /* * For 'All Registrants' reservation types, all existing @@ -1219,7 +1219,8 @@ static void __core_scsi3_free_registration( pr_reg->pr_reg_deve->def_pr_registered = 0; pr_reg->pr_reg_deve->pr_res_key = 0; - list_del(&pr_reg->pr_reg_list); + if (!list_empty(&pr_reg->pr_reg_list)) + list_del(&pr_reg->pr_reg_list); /* * Caller accessing *pr_reg using core_scsi3_locate_pr_reg(), * so call core_scsi3_put_pr_reg() to decrement our reference. @@ -1271,6 +1272,7 @@ void core_scsi3_free_pr_reg_from_nacl( { struct t10_reservation *pr_tmpl = &dev->t10_pr; struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_res_holder; + bool free_reg = false; /* * If the passed se_node_acl matches the reservation holder, * release the reservation. @@ -1278,13 +1280,18 @@ void core_scsi3_free_pr_reg_from_nacl( spin_lock(&dev->dev_reservation_lock); pr_res_holder = dev->dev_pr_res_holder; if ((pr_res_holder != NULL) && - (pr_res_holder->pr_reg_nacl == nacl)) - __core_scsi3_complete_pro_release(dev, nacl, pr_res_holder, 0); + (pr_res_holder->pr_reg_nacl == nacl)) { + __core_scsi3_complete_pro_release(dev, nacl, pr_res_holder, 0, 1); + free_reg = true; + } spin_unlock(&dev->dev_reservation_lock); /* * Release any registration associated with the struct se_node_acl. */ spin_lock(&pr_tmpl->registration_lock); + if (pr_res_holder && free_reg) + __core_scsi3_free_registration(dev, pr_res_holder, NULL, 0); + list_for_each_entry_safe(pr_reg, pr_reg_tmp, &pr_tmpl->registration_list, pr_reg_list) { @@ -1307,7 +1314,7 @@ void core_scsi3_free_all_registrations( if (pr_res_holder != NULL) { struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl; __core_scsi3_complete_pro_release(dev, pr_res_nacl, - pr_res_holder, 0); + pr_res_holder, 0, 0); } spin_unlock(&dev->dev_reservation_lock); @@ -1429,14 +1436,12 @@ core_scsi3_decode_spec_i_port( struct target_core_fabric_ops *tmp_tf_ops; unsigned char *buf; unsigned char *ptr, *i_str = NULL, proto_ident, tmp_proto_ident; - char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN]; + char *iport_ptr = NULL, i_buf[PR_REG_ISID_ID_LEN]; sense_reason_t ret; u32 tpdl, tid_len = 0; int dest_local_nexus; u32 dest_rtpi = 0; - memset(dest_iport, 0, 64); - local_se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; /* * Allocate a struct pr_transport_id_holder and setup the @@ -2105,13 +2110,13 @@ core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key, /* * sa_res_key=0 Unregister Reservation Key for registered I_T Nexus. */ - pr_holder = core_scsi3_check_implicit_release( - cmd->se_dev, pr_reg); + type = pr_reg->pr_res_type; + pr_holder = core_scsi3_check_implicit_release(cmd->se_dev, + pr_reg); if (pr_holder < 0) { ret = TCM_RESERVATION_CONFLICT; goto out; } - type = pr_reg->pr_res_type; spin_lock(&pr_tmpl->registration_lock); /* @@ -2269,6 +2274,7 @@ core_scsi3_pro_reserve(struct se_cmd *cmd, int type, int scope, u64 res_key) spin_lock(&dev->dev_reservation_lock); pr_res_holder = dev->dev_pr_res_holder; if (pr_res_holder) { + int pr_res_type = pr_res_holder->pr_res_type; /* * From spc4r17 Section 5.7.9: Reserving: * @@ -2279,7 +2285,9 @@ core_scsi3_pro_reserve(struct se_cmd *cmd, int type, int scope, u64 res_key) * the logical unit, then the command shall be completed with * RESERVATION CONFLICT status. */ - if (pr_res_holder != pr_reg) { + if ((pr_res_holder != pr_reg) && + (pr_res_type != PR_TYPE_WRITE_EXCLUSIVE_ALLREG) && + (pr_res_type != PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) { struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl; pr_err("SPC-3 PR: Attempted RESERVE from" " [%s]: %s while reservation already held by" @@ -2385,23 +2393,59 @@ static void __core_scsi3_complete_pro_release( struct se_device *dev, struct se_node_acl *se_nacl, struct t10_pr_registration *pr_reg, - int explicit) + int explicit, + int unreg) { struct target_core_fabric_ops *tfo = se_nacl->se_tpg->se_tpg_tfo; char i_buf[PR_REG_ISID_ID_LEN]; + int pr_res_type = 0, pr_res_scope = 0; memset(i_buf, 0, PR_REG_ISID_ID_LEN); core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); /* * Go ahead and release the current PR reservation holder. + * If an All Registrants reservation is currently active and + * a unregister operation is requested, replace the current + * dev_pr_res_holder with another active registration. */ - dev->dev_pr_res_holder = NULL; + if (dev->dev_pr_res_holder) { + pr_res_type = dev->dev_pr_res_holder->pr_res_type; + pr_res_scope = dev->dev_pr_res_holder->pr_res_scope; + dev->dev_pr_res_holder->pr_res_type = 0; + dev->dev_pr_res_holder->pr_res_scope = 0; + dev->dev_pr_res_holder->pr_res_holder = 0; + dev->dev_pr_res_holder = NULL; + } + if (!unreg) + goto out; - pr_debug("SPC-3 PR [%s] Service Action: %s RELEASE cleared" - " reservation holder TYPE: %s ALL_TG_PT: %d\n", - tfo->get_fabric_name(), (explicit) ? "explicit" : "implicit", - core_scsi3_pr_dump_type(pr_reg->pr_res_type), - (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); + spin_lock(&dev->t10_pr.registration_lock); + list_del_init(&pr_reg->pr_reg_list); + /* + * If the I_T nexus is a reservation holder, the persistent reservation + * is of an all registrants type, and the I_T nexus is the last remaining + * registered I_T nexus, then the device server shall also release the + * persistent reservation. + */ + if (!list_empty(&dev->t10_pr.registration_list) && + ((pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) || + (pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG))) { + dev->dev_pr_res_holder = + list_entry(dev->t10_pr.registration_list.next, + struct t10_pr_registration, pr_reg_list); + dev->dev_pr_res_holder->pr_res_type = pr_res_type; + dev->dev_pr_res_holder->pr_res_scope = pr_res_scope; + dev->dev_pr_res_holder->pr_res_holder = 1; + } + spin_unlock(&dev->t10_pr.registration_lock); +out: + if (!dev->dev_pr_res_holder) { + pr_debug("SPC-3 PR [%s] Service Action: %s RELEASE cleared" + " reservation holder TYPE: %s ALL_TG_PT: %d\n", + tfo->get_fabric_name(), (explicit) ? "explicit" : + "implicit", core_scsi3_pr_dump_type(pr_res_type), + (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); + } pr_debug("SPC-3 PR [%s] RELEASE Node: %s%s\n", tfo->get_fabric_name(), se_nacl->initiatorname, i_buf); @@ -2532,7 +2576,7 @@ core_scsi3_emulate_pro_release(struct se_cmd *cmd, int type, int scope, * server shall not establish a unit attention condition. */ __core_scsi3_complete_pro_release(dev, se_sess->se_node_acl, - pr_reg, 1); + pr_reg, 1, 0); spin_unlock(&dev->dev_reservation_lock); @@ -2620,7 +2664,7 @@ core_scsi3_emulate_pro_clear(struct se_cmd *cmd, u64 res_key) if (pr_res_holder) { struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl; __core_scsi3_complete_pro_release(dev, pr_res_nacl, - pr_res_holder, 0); + pr_res_holder, 0, 0); } spin_unlock(&dev->dev_reservation_lock); /* @@ -2679,7 +2723,7 @@ static void __core_scsi3_complete_pro_preempt( */ if (dev->dev_pr_res_holder) __core_scsi3_complete_pro_release(dev, nacl, - dev->dev_pr_res_holder, 0); + dev->dev_pr_res_holder, 0, 0); dev->dev_pr_res_holder = pr_reg; pr_reg->pr_res_holder = 1; @@ -2924,8 +2968,8 @@ core_scsi3_pro_preempt(struct se_cmd *cmd, int type, int scope, u64 res_key, */ if (pr_reg_n != pr_res_holder) __core_scsi3_complete_pro_release(dev, - pr_res_holder->pr_reg_nacl, - dev->dev_pr_res_holder, 0); + pr_res_holder->pr_reg_nacl, + dev->dev_pr_res_holder, 0, 0); /* * b) Remove the registrations for all I_T nexuses identified * by the SERVICE ACTION RESERVATION KEY field, except the @@ -3059,7 +3103,7 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key, struct t10_reservation *pr_tmpl = &dev->t10_pr; unsigned char *buf; unsigned char *initiator_str; - char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN]; + char *iport_ptr = NULL, i_buf[PR_REG_ISID_ID_LEN]; u32 tid_len, tmp_tid_len; int new_reg = 0, type, scope, matching_iname; sense_reason_t ret; @@ -3071,7 +3115,6 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key, return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } - memset(dest_iport, 0, 64); memset(i_buf, 0, PR_REG_ISID_ID_LEN); se_tpg = se_sess->se_tpg; tf_ops = se_tpg->se_tpg_tfo; @@ -3389,7 +3432,7 @@ after_iport_check: * holder (i.e., the I_T nexus on which the */ __core_scsi3_complete_pro_release(dev, pr_res_nacl, - dev->dev_pr_res_holder, 0); + dev->dev_pr_res_holder, 0, 0); /* * g) Move the persistent reservation to the specified I_T nexus using * the same scope and type as the persistent reservation released in @@ -3837,7 +3880,8 @@ core_scsi3_pri_read_full_status(struct se_cmd *cmd) unsigned char *buf; u32 add_desc_len = 0, add_len = 0, desc_len, exp_desc_len; u32 off = 8; /* off into first Full Status descriptor */ - int format_code = 0; + int format_code = 0, pr_res_type = 0, pr_res_scope = 0; + bool all_reg = false; if (cmd->data_length < 8) { pr_err("PRIN SA READ_FULL_STATUS SCSI Data Length: %u" @@ -3854,6 +3898,19 @@ core_scsi3_pri_read_full_status(struct se_cmd *cmd) buf[2] = ((dev->t10_pr.pr_generation >> 8) & 0xff); buf[3] = (dev->t10_pr.pr_generation & 0xff); + spin_lock(&dev->dev_reservation_lock); + if (dev->dev_pr_res_holder) { + struct t10_pr_registration *pr_holder = dev->dev_pr_res_holder; + + if (pr_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG || + pr_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG) { + all_reg = true; + pr_res_type = pr_holder->pr_res_type; + pr_res_scope = pr_holder->pr_res_scope; + } + } + spin_unlock(&dev->dev_reservation_lock); + spin_lock(&pr_tmpl->registration_lock); list_for_each_entry_safe(pr_reg, pr_reg_tmp, &pr_tmpl->registration_list, pr_reg_list) { @@ -3901,14 +3958,20 @@ core_scsi3_pri_read_full_status(struct se_cmd *cmd) * reservation holder for PR_HOLDER bit. * * Also, if this registration is the reservation - * holder, fill in SCOPE and TYPE in the next byte. + * holder or there is an All Registrants reservation + * active, fill in SCOPE and TYPE in the next byte. */ if (pr_reg->pr_res_holder) { buf[off++] |= 0x01; buf[off++] = (pr_reg->pr_res_scope & 0xf0) | (pr_reg->pr_res_type & 0x0f); - } else + } else if (all_reg) { + buf[off++] |= 0x01; + buf[off++] = (pr_res_scope & 0xf0) | + (pr_res_type & 0x0f); + } else { off += 2; + } off += 4; /* Skip over reserved area */ /* diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c index 7c8291f0bbbc..74873e42cf7e 100644 --- a/drivers/target/target_core_pscsi.c +++ b/drivers/target/target_core_pscsi.c @@ -44,6 +44,7 @@ #include <target/target_core_base.h> #include <target/target_core_backend.h> +#include <target/target_core_backend_configfs.h> #include "target_core_alua.h" #include "target_core_pscsi.h" @@ -1165,6 +1166,26 @@ static void pscsi_req_done(struct request *req, int uptodate) kfree(pt); } +DEF_TB_DEV_ATTRIB_RO(pscsi, hw_pi_prot_type); +TB_DEV_ATTR_RO(pscsi, hw_pi_prot_type); + +DEF_TB_DEV_ATTRIB_RO(pscsi, hw_block_size); +TB_DEV_ATTR_RO(pscsi, hw_block_size); + +DEF_TB_DEV_ATTRIB_RO(pscsi, hw_max_sectors); +TB_DEV_ATTR_RO(pscsi, hw_max_sectors); + +DEF_TB_DEV_ATTRIB_RO(pscsi, hw_queue_depth); +TB_DEV_ATTR_RO(pscsi, hw_queue_depth); + +static struct configfs_attribute *pscsi_backend_dev_attrs[] = { + &pscsi_dev_attrib_hw_pi_prot_type.attr, + &pscsi_dev_attrib_hw_block_size.attr, + &pscsi_dev_attrib_hw_max_sectors.attr, + &pscsi_dev_attrib_hw_queue_depth.attr, + NULL, +}; + static struct se_subsystem_api pscsi_template = { .name = "pscsi", .owner = THIS_MODULE, @@ -1185,6 +1206,11 @@ static struct se_subsystem_api pscsi_template = { static int __init pscsi_module_init(void) { + struct target_backend_cits *tbc = &pscsi_template.tb_cits; + + target_core_setup_sub_cits(&pscsi_template); + tbc->tb_dev_attrib_cit.ct_attrs = pscsi_backend_dev_attrs; + return transport_subsystem_register(&pscsi_template); } diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c index b920db3388cd..60ebd170a561 100644 --- a/drivers/target/target_core_rd.c +++ b/drivers/target/target_core_rd.c @@ -34,6 +34,7 @@ #include <target/target_core_base.h> #include <target/target_core_backend.h> +#include <target/target_core_backend_configfs.h> #include "target_core_rd.h" @@ -632,6 +633,42 @@ rd_parse_cdb(struct se_cmd *cmd) return sbc_parse_cdb(cmd, &rd_sbc_ops); } +DEF_TB_DEFAULT_ATTRIBS(rd_mcp); + +static struct configfs_attribute *rd_mcp_backend_dev_attrs[] = { + &rd_mcp_dev_attrib_emulate_model_alias.attr, + &rd_mcp_dev_attrib_emulate_dpo.attr, + &rd_mcp_dev_attrib_emulate_fua_write.attr, + &rd_mcp_dev_attrib_emulate_fua_read.attr, + &rd_mcp_dev_attrib_emulate_write_cache.attr, + &rd_mcp_dev_attrib_emulate_ua_intlck_ctrl.attr, + &rd_mcp_dev_attrib_emulate_tas.attr, + &rd_mcp_dev_attrib_emulate_tpu.attr, + &rd_mcp_dev_attrib_emulate_tpws.attr, + &rd_mcp_dev_attrib_emulate_caw.attr, + &rd_mcp_dev_attrib_emulate_3pc.attr, + &rd_mcp_dev_attrib_pi_prot_type.attr, + &rd_mcp_dev_attrib_hw_pi_prot_type.attr, + &rd_mcp_dev_attrib_pi_prot_format.attr, + &rd_mcp_dev_attrib_enforce_pr_isids.attr, + &rd_mcp_dev_attrib_is_nonrot.attr, + &rd_mcp_dev_attrib_emulate_rest_reord.attr, + &rd_mcp_dev_attrib_force_pr_aptpl.attr, + &rd_mcp_dev_attrib_hw_block_size.attr, + &rd_mcp_dev_attrib_block_size.attr, + &rd_mcp_dev_attrib_hw_max_sectors.attr, + &rd_mcp_dev_attrib_fabric_max_sectors.attr, + &rd_mcp_dev_attrib_optimal_sectors.attr, + &rd_mcp_dev_attrib_hw_queue_depth.attr, + &rd_mcp_dev_attrib_queue_depth.attr, + &rd_mcp_dev_attrib_max_unmap_lba_count.attr, + &rd_mcp_dev_attrib_max_unmap_block_desc_count.attr, + &rd_mcp_dev_attrib_unmap_granularity.attr, + &rd_mcp_dev_attrib_unmap_granularity_alignment.attr, + &rd_mcp_dev_attrib_max_write_same_len.attr, + NULL, +}; + static struct se_subsystem_api rd_mcp_template = { .name = "rd_mcp", .inquiry_prod = "RAMDISK-MCP", @@ -653,8 +690,12 @@ static struct se_subsystem_api rd_mcp_template = { int __init rd_module_init(void) { + struct target_backend_cits *tbc = &rd_mcp_template.tb_cits; int ret; + target_core_setup_sub_cits(&rd_mcp_template); + tbc->tb_dev_attrib_cit.ct_attrs = rd_mcp_backend_dev_attrs; + ret = transport_subsystem_register(&rd_mcp_template); if (ret < 0) { return ret; diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 9a1b314f6482..8bfa61c9693d 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -28,6 +28,8 @@ #include <target/target_core_base.h> #include <target/target_core_fabric.h> #include <target/target_core_backend.h> +#include <target/target_core_backend_configfs.h> + #include <linux/target_core_user.h> /* @@ -1092,6 +1094,42 @@ tcmu_parse_cdb(struct se_cmd *cmd) return ret; } +DEF_TB_DEFAULT_ATTRIBS(tcmu); + +static struct configfs_attribute *tcmu_backend_dev_attrs[] = { + &tcmu_dev_attrib_emulate_model_alias.attr, + &tcmu_dev_attrib_emulate_dpo.attr, + &tcmu_dev_attrib_emulate_fua_write.attr, + &tcmu_dev_attrib_emulate_fua_read.attr, + &tcmu_dev_attrib_emulate_write_cache.attr, + &tcmu_dev_attrib_emulate_ua_intlck_ctrl.attr, + &tcmu_dev_attrib_emulate_tas.attr, + &tcmu_dev_attrib_emulate_tpu.attr, + &tcmu_dev_attrib_emulate_tpws.attr, + &tcmu_dev_attrib_emulate_caw.attr, + &tcmu_dev_attrib_emulate_3pc.attr, + &tcmu_dev_attrib_pi_prot_type.attr, + &tcmu_dev_attrib_hw_pi_prot_type.attr, + &tcmu_dev_attrib_pi_prot_format.attr, + &tcmu_dev_attrib_enforce_pr_isids.attr, + &tcmu_dev_attrib_is_nonrot.attr, + &tcmu_dev_attrib_emulate_rest_reord.attr, + &tcmu_dev_attrib_force_pr_aptpl.attr, + &tcmu_dev_attrib_hw_block_size.attr, + &tcmu_dev_attrib_block_size.attr, + &tcmu_dev_attrib_hw_max_sectors.attr, + &tcmu_dev_attrib_fabric_max_sectors.attr, + &tcmu_dev_attrib_optimal_sectors.attr, + &tcmu_dev_attrib_hw_queue_depth.attr, + &tcmu_dev_attrib_queue_depth.attr, + &tcmu_dev_attrib_max_unmap_lba_count.attr, + &tcmu_dev_attrib_max_unmap_block_desc_count.attr, + &tcmu_dev_attrib_unmap_granularity.attr, + &tcmu_dev_attrib_unmap_granularity_alignment.attr, + &tcmu_dev_attrib_max_write_same_len.attr, + NULL, +}; + static struct se_subsystem_api tcmu_template = { .name = "user", .inquiry_prod = "USER", @@ -1112,6 +1150,7 @@ static struct se_subsystem_api tcmu_template = { static int __init tcmu_module_init(void) { + struct target_backend_cits *tbc = &tcmu_template.tb_cits; int ret; BUILD_BUG_ON((sizeof(struct tcmu_cmd_entry) % TCMU_OP_ALIGN_SIZE) != 0); @@ -1134,6 +1173,9 @@ static int __init tcmu_module_init(void) goto out_unreg_device; } + target_core_setup_sub_cits(&tcmu_template); + tbc->tb_dev_attrib_cit.ct_attrs = tcmu_backend_dev_attrs; + ret = transport_subsystem_register(&tcmu_template); if (ret) goto out_unreg_genl; diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h index 9adc1bca1178..430cfaf92285 100644 --- a/include/target/target_core_backend.h +++ b/include/target/target_core_backend.h @@ -5,6 +5,15 @@ #define TRANSPORT_PLUGIN_VHBA_PDEV 2 #define TRANSPORT_PLUGIN_VHBA_VDEV 3 +struct target_backend_cits { + struct config_item_type tb_dev_cit; + struct config_item_type tb_dev_attrib_cit; + struct config_item_type tb_dev_pr_cit; + struct config_item_type tb_dev_wwn_cit; + struct config_item_type tb_dev_alua_tg_pt_gps_cit; + struct config_item_type tb_dev_stat_cit; +}; + struct se_subsystem_api { struct list_head sub_api_list; @@ -44,6 +53,8 @@ struct se_subsystem_api { int (*init_prot)(struct se_device *); int (*format_prot)(struct se_device *); void (*free_prot)(struct se_device *); + + struct target_backend_cits tb_cits; }; struct sbc_ops { @@ -96,4 +107,36 @@ sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *, void array_free(void *array, int n); +/* From target_core_configfs.c to setup default backend config_item_types */ +void target_core_setup_sub_cits(struct se_subsystem_api *); + +/* attribute helpers from target_core_device.c for backend drivers */ +int se_dev_set_max_unmap_lba_count(struct se_device *, u32); +int se_dev_set_max_unmap_block_desc_count(struct se_device *, u32); +int se_dev_set_unmap_granularity(struct se_device *, u32); +int se_dev_set_unmap_granularity_alignment(struct se_device *, u32); +int se_dev_set_max_write_same_len(struct se_device *, u32); +int se_dev_set_emulate_model_alias(struct se_device *, int); +int se_dev_set_emulate_dpo(struct se_device *, int); +int se_dev_set_emulate_fua_write(struct se_device *, int); +int se_dev_set_emulate_fua_read(struct se_device *, int); +int se_dev_set_emulate_write_cache(struct se_device *, int); +int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *, int); +int se_dev_set_emulate_tas(struct se_device *, int); +int se_dev_set_emulate_tpu(struct se_device *, int); +int se_dev_set_emulate_tpws(struct se_device *, int); +int se_dev_set_emulate_caw(struct se_device *, int); +int se_dev_set_emulate_3pc(struct se_device *, int); +int se_dev_set_pi_prot_type(struct se_device *, int); +int se_dev_set_pi_prot_format(struct se_device *, int); +int se_dev_set_enforce_pr_isids(struct se_device *, int); +int se_dev_set_force_pr_aptpl(struct se_device *, int); +int se_dev_set_is_nonrot(struct se_device *, int); +int se_dev_set_emulate_rest_reord(struct se_device *dev, int); +int se_dev_set_queue_depth(struct se_device *, u32); +int se_dev_set_max_sectors(struct se_device *, u32); +int se_dev_set_fabric_max_sectors(struct se_device *, u32); +int se_dev_set_optimal_sectors(struct se_device *, u32); +int se_dev_set_block_size(struct se_device *, u32); + #endif /* TARGET_CORE_BACKEND_H */ diff --git a/include/target/target_core_backend_configfs.h b/include/target/target_core_backend_configfs.h new file mode 100644 index 000000000000..3247d7530107 --- /dev/null +++ b/include/target/target_core_backend_configfs.h @@ -0,0 +1,120 @@ +#ifndef TARGET_CORE_BACKEND_CONFIGFS_H +#define TARGET_CORE_BACKEND_CONFIGFS_H + +#include <target/configfs_macros.h> + +#define DEF_TB_DEV_ATTRIB_SHOW(_backend, _name) \ +static ssize_t _backend##_dev_show_attr_##_name( \ + struct se_dev_attrib *da, \ + char *page) \ +{ \ + return snprintf(page, PAGE_SIZE, "%u\n", \ + (u32)da->da_dev->dev_attrib._name); \ +} + +#define DEF_TB_DEV_ATTRIB_STORE(_backend, _name) \ +static ssize_t _backend##_dev_store_attr_##_name( \ + struct se_dev_attrib *da, \ + const char *page, \ + size_t count) \ +{ \ + unsigned long val; \ + int ret; \ + \ + ret = kstrtoul(page, 0, &val); \ + if (ret < 0) { \ + pr_err("kstrtoul() failed with ret: %d\n", ret); \ + return -EINVAL; \ + } \ + ret = se_dev_set_##_name(da->da_dev, (u32)val); \ + \ + return (!ret) ? count : -EINVAL; \ +} + +#define DEF_TB_DEV_ATTRIB(_backend, _name) \ +DEF_TB_DEV_ATTRIB_SHOW(_backend, _name); \ +DEF_TB_DEV_ATTRIB_STORE(_backend, _name); + +#define DEF_TB_DEV_ATTRIB_RO(_backend, name) \ +DEF_TB_DEV_ATTRIB_SHOW(_backend, name); + +CONFIGFS_EATTR_STRUCT(target_backend_dev_attrib, se_dev_attrib); +#define TB_DEV_ATTR(_backend, _name, _mode) \ +static struct target_backend_dev_attrib_attribute _backend##_dev_attrib_##_name = \ + __CONFIGFS_EATTR(_name, _mode, \ + _backend##_dev_show_attr_##_name, \ + _backend##_dev_store_attr_##_name); + +#define TB_DEV_ATTR_RO(_backend, _name) \ +static struct target_backend_dev_attrib_attribute _backend##_dev_attrib_##_name = \ + __CONFIGFS_EATTR_RO(_name, \ + _backend##_dev_show_attr_##_name); + +/* + * Default list of target backend device attributes as defined by + * struct se_dev_attrib + */ + +#define DEF_TB_DEFAULT_ATTRIBS(_backend) \ + DEF_TB_DEV_ATTRIB(_backend, emulate_model_alias); \ + TB_DEV_ATTR(_backend, emulate_model_alias, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, emulate_dpo); \ + TB_DEV_ATTR(_backend, emulate_dpo, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, emulate_fua_write); \ + TB_DEV_ATTR(_backend, emulate_fua_write, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, emulate_fua_read); \ + TB_DEV_ATTR(_backend, emulate_fua_read, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, emulate_write_cache); \ + TB_DEV_ATTR(_backend, emulate_write_cache, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, emulate_ua_intlck_ctrl); \ + TB_DEV_ATTR(_backend, emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, emulate_tas); \ + TB_DEV_ATTR(_backend, emulate_tas, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, emulate_tpu); \ + TB_DEV_ATTR(_backend, emulate_tpu, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, emulate_tpws); \ + TB_DEV_ATTR(_backend, emulate_tpws, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, emulate_caw); \ + TB_DEV_ATTR(_backend, emulate_caw, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, emulate_3pc); \ + TB_DEV_ATTR(_backend, emulate_3pc, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, pi_prot_type); \ + TB_DEV_ATTR(_backend, pi_prot_type, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB_RO(_backend, hw_pi_prot_type); \ + TB_DEV_ATTR_RO(_backend, hw_pi_prot_type); \ + DEF_TB_DEV_ATTRIB(_backend, pi_prot_format); \ + TB_DEV_ATTR(_backend, pi_prot_format, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, enforce_pr_isids); \ + TB_DEV_ATTR(_backend, enforce_pr_isids, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, is_nonrot); \ + TB_DEV_ATTR(_backend, is_nonrot, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, emulate_rest_reord); \ + TB_DEV_ATTR(_backend, emulate_rest_reord, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, force_pr_aptpl); \ + TB_DEV_ATTR(_backend, force_pr_aptpl, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB_RO(_backend, hw_block_size); \ + TB_DEV_ATTR_RO(_backend, hw_block_size); \ + DEF_TB_DEV_ATTRIB(_backend, block_size); \ + TB_DEV_ATTR(_backend, block_size, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB_RO(_backend, hw_max_sectors); \ + TB_DEV_ATTR_RO(_backend, hw_max_sectors); \ + DEF_TB_DEV_ATTRIB(_backend, fabric_max_sectors); \ + TB_DEV_ATTR(_backend, fabric_max_sectors, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, optimal_sectors); \ + TB_DEV_ATTR(_backend, optimal_sectors, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB_RO(_backend, hw_queue_depth); \ + TB_DEV_ATTR_RO(_backend, hw_queue_depth); \ + DEF_TB_DEV_ATTRIB(_backend, queue_depth); \ + TB_DEV_ATTR(_backend, queue_depth, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, max_unmap_lba_count); \ + TB_DEV_ATTR(_backend, max_unmap_lba_count, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, max_unmap_block_desc_count); \ + TB_DEV_ATTR(_backend, max_unmap_block_desc_count, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, unmap_granularity); \ + TB_DEV_ATTR(_backend, unmap_granularity, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, unmap_granularity_alignment); \ + TB_DEV_ATTR(_backend, unmap_granularity_alignment, S_IRUGO | S_IWUSR); \ + DEF_TB_DEV_ATTRIB(_backend, max_write_same_len); \ + TB_DEV_ATTR(_backend, max_write_same_len, S_IRUGO | S_IWUSR); + +#endif /* TARGET_CORE_BACKEND_CONFIGFS_H */ diff --git a/include/uapi/linux/target_core_user.h b/include/uapi/linux/target_core_user.h index 7dcfbe6771b1..b483d1909d3e 100644 --- a/include/uapi/linux/target_core_user.h +++ b/include/uapi/linux/target_core_user.h @@ -6,10 +6,6 @@ #include <linux/types.h> #include <linux/uio.h> -#ifndef __packed -#define __packed __attribute__((packed)) -#endif - #define TCMU_VERSION "1.0" /* |