Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target fixes from Nicholas Bellinger: "This includes a iser-target series from Jenny + Sagi @ Mellanox that addresses the few remaining active I/O shutdown bugs, along with a patch to support zero-copy for immediate data payloads that gives a nice performance improvement for small block WRITEs. Also included are some recent >= v4.2 regression bug-fixes. The most notable is a RCU conversion regression for SPC-3 PR registrations, and recent removal of obsolete RFC-3720 markers that introduced a login regression bug with MSFT iSCSI initiators. Thanks to everyone who has been testing + reporting bugs for v4.x" * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: iscsi-target: Avoid OFMarker + IFMarker negotiation target: Make TCM_WRITE_PROTECT failure honor D_SENSE bit target: Fix target_sense_desc_format NULL pointer dereference target: Propigate backend read-only to core_tpg_add_lun target: Fix PR registration + APTPL RCU conversion regression iser-target: Skip data copy if all the command data comes as immediate iser-target: Change the recv buffers posting logic iser-target: Fix pending connections handling in target stack shutdown sequnce iser-target: Remove np_ prefix from isert_np members iser-target: Remove unused variables iser-target: Put the reference on commands waiting for unsol data iser-target: remove command with state ISTATE_REMOVEsteinar/wifi_calib_4_9_kernel
Linus Torvalds
commit
c91d707295
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@ -238,8 +238,6 @@ isert_alloc_rx_descriptors(struct isert_conn *isert_conn)
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rx_sg->lkey = device->pd->local_dma_lkey;
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}
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isert_conn->rx_desc_head = 0;
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return 0;
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dma_map_fail:
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@ -634,7 +632,7 @@ static void
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isert_init_conn(struct isert_conn *isert_conn)
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{
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isert_conn->state = ISER_CONN_INIT;
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INIT_LIST_HEAD(&isert_conn->accept_node);
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INIT_LIST_HEAD(&isert_conn->node);
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init_completion(&isert_conn->login_comp);
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init_completion(&isert_conn->login_req_comp);
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init_completion(&isert_conn->wait);
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@ -762,28 +760,15 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
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ret = isert_rdma_post_recvl(isert_conn);
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if (ret)
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goto out_conn_dev;
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/*
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* Obtain the second reference now before isert_rdma_accept() to
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* ensure that any initiator generated REJECT CM event that occurs
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* asynchronously won't drop the last reference until the error path
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* in iscsi_target_login_sess_out() does it's ->iscsit_free_conn() ->
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* isert_free_conn() -> isert_put_conn() -> kref_put().
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*/
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if (!kref_get_unless_zero(&isert_conn->kref)) {
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isert_warn("conn %p connect_release is running\n", isert_conn);
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goto out_conn_dev;
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}
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ret = isert_rdma_accept(isert_conn);
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if (ret)
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goto out_conn_dev;
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mutex_lock(&isert_np->np_accept_mutex);
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list_add_tail(&isert_conn->accept_node, &isert_np->np_accept_list);
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mutex_unlock(&isert_np->np_accept_mutex);
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mutex_lock(&isert_np->mutex);
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list_add_tail(&isert_conn->node, &isert_np->accepted);
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mutex_unlock(&isert_np->mutex);
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isert_info("np %p: Allow accept_np to continue\n", np);
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up(&isert_np->np_sem);
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return 0;
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out_conn_dev:
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@ -831,13 +816,21 @@ static void
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isert_connected_handler(struct rdma_cm_id *cma_id)
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{
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struct isert_conn *isert_conn = cma_id->qp->qp_context;
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struct isert_np *isert_np = cma_id->context;
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isert_info("conn %p\n", isert_conn);
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mutex_lock(&isert_conn->mutex);
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if (isert_conn->state != ISER_CONN_FULL_FEATURE)
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isert_conn->state = ISER_CONN_UP;
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isert_conn->state = ISER_CONN_UP;
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kref_get(&isert_conn->kref);
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mutex_unlock(&isert_conn->mutex);
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mutex_lock(&isert_np->mutex);
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list_move_tail(&isert_conn->node, &isert_np->pending);
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mutex_unlock(&isert_np->mutex);
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isert_info("np %p: Allow accept_np to continue\n", isert_np);
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up(&isert_np->sem);
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}
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static void
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@ -903,14 +896,14 @@ isert_np_cma_handler(struct isert_np *isert_np,
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switch (event) {
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case RDMA_CM_EVENT_DEVICE_REMOVAL:
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isert_np->np_cm_id = NULL;
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isert_np->cm_id = NULL;
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break;
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case RDMA_CM_EVENT_ADDR_CHANGE:
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isert_np->np_cm_id = isert_setup_id(isert_np);
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if (IS_ERR(isert_np->np_cm_id)) {
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isert_np->cm_id = isert_setup_id(isert_np);
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if (IS_ERR(isert_np->cm_id)) {
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isert_err("isert np %p setup id failed: %ld\n",
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isert_np, PTR_ERR(isert_np->np_cm_id));
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isert_np->np_cm_id = NULL;
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isert_np, PTR_ERR(isert_np->cm_id));
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isert_np->cm_id = NULL;
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}
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break;
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default:
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@ -929,7 +922,7 @@ isert_disconnected_handler(struct rdma_cm_id *cma_id,
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struct isert_conn *isert_conn;
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bool terminating = false;
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if (isert_np->np_cm_id == cma_id)
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if (isert_np->cm_id == cma_id)
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return isert_np_cma_handler(cma_id->context, event);
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isert_conn = cma_id->qp->qp_context;
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@ -945,13 +938,13 @@ isert_disconnected_handler(struct rdma_cm_id *cma_id,
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if (terminating)
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goto out;
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mutex_lock(&isert_np->np_accept_mutex);
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if (!list_empty(&isert_conn->accept_node)) {
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list_del_init(&isert_conn->accept_node);
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mutex_lock(&isert_np->mutex);
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if (!list_empty(&isert_conn->node)) {
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list_del_init(&isert_conn->node);
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isert_put_conn(isert_conn);
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queue_work(isert_release_wq, &isert_conn->release_work);
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}
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mutex_unlock(&isert_np->np_accept_mutex);
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mutex_unlock(&isert_np->mutex);
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out:
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return 0;
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@ -962,6 +955,7 @@ isert_connect_error(struct rdma_cm_id *cma_id)
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{
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struct isert_conn *isert_conn = cma_id->qp->qp_context;
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list_del_init(&isert_conn->node);
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isert_conn->cm_id = NULL;
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isert_put_conn(isert_conn);
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@ -1006,35 +1000,51 @@ isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
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}
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static int
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isert_post_recv(struct isert_conn *isert_conn, u32 count)
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isert_post_recvm(struct isert_conn *isert_conn, u32 count)
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{
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struct ib_recv_wr *rx_wr, *rx_wr_failed;
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int i, ret;
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unsigned int rx_head = isert_conn->rx_desc_head;
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struct iser_rx_desc *rx_desc;
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for (rx_wr = isert_conn->rx_wr, i = 0; i < count; i++, rx_wr++) {
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rx_desc = &isert_conn->rx_descs[rx_head];
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rx_wr->wr_id = (uintptr_t)rx_desc;
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rx_wr->sg_list = &rx_desc->rx_sg;
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rx_wr->num_sge = 1;
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rx_wr->next = rx_wr + 1;
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rx_head = (rx_head + 1) & (ISERT_QP_MAX_RECV_DTOS - 1);
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rx_desc = &isert_conn->rx_descs[i];
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rx_wr->wr_id = (uintptr_t)rx_desc;
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rx_wr->sg_list = &rx_desc->rx_sg;
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rx_wr->num_sge = 1;
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rx_wr->next = rx_wr + 1;
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}
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rx_wr--;
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rx_wr->next = NULL; /* mark end of work requests list */
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isert_conn->post_recv_buf_count += count;
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ret = ib_post_recv(isert_conn->qp, isert_conn->rx_wr,
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&rx_wr_failed);
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&rx_wr_failed);
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if (ret) {
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isert_err("ib_post_recv() failed with ret: %d\n", ret);
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isert_conn->post_recv_buf_count -= count;
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} else {
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isert_dbg("Posted %d RX buffers\n", count);
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isert_conn->rx_desc_head = rx_head;
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}
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return ret;
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}
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static int
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isert_post_recv(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc)
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{
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struct ib_recv_wr *rx_wr_failed, rx_wr;
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int ret;
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rx_wr.wr_id = (uintptr_t)rx_desc;
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rx_wr.sg_list = &rx_desc->rx_sg;
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rx_wr.num_sge = 1;
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rx_wr.next = NULL;
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isert_conn->post_recv_buf_count++;
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ret = ib_post_recv(isert_conn->qp, &rx_wr, &rx_wr_failed);
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if (ret) {
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isert_err("ib_post_recv() failed with ret: %d\n", ret);
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isert_conn->post_recv_buf_count--;
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}
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return ret;
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}
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@ -1205,7 +1215,8 @@ isert_put_login_tx(struct iscsi_conn *conn, struct iscsi_login *login,
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if (ret)
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return ret;
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ret = isert_post_recv(isert_conn, ISERT_MIN_POSTED_RX);
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ret = isert_post_recvm(isert_conn,
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ISERT_QP_MAX_RECV_DTOS);
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if (ret)
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return ret;
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@ -1278,7 +1289,7 @@ isert_rx_login_req(struct isert_conn *isert_conn)
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}
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static struct iscsi_cmd
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*isert_allocate_cmd(struct iscsi_conn *conn)
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*isert_allocate_cmd(struct iscsi_conn *conn, struct iser_rx_desc *rx_desc)
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{
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struct isert_conn *isert_conn = conn->context;
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struct isert_cmd *isert_cmd;
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@ -1292,6 +1303,7 @@ static struct iscsi_cmd
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isert_cmd = iscsit_priv_cmd(cmd);
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isert_cmd->conn = isert_conn;
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isert_cmd->iscsi_cmd = cmd;
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isert_cmd->rx_desc = rx_desc;
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return cmd;
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}
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@ -1303,9 +1315,9 @@ isert_handle_scsi_cmd(struct isert_conn *isert_conn,
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{
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struct iscsi_conn *conn = isert_conn->conn;
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struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)buf;
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struct scatterlist *sg;
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int imm_data, imm_data_len, unsol_data, sg_nents, rc;
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bool dump_payload = false;
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unsigned int data_len;
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rc = iscsit_setup_scsi_cmd(conn, cmd, buf);
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if (rc < 0)
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@ -1314,7 +1326,10 @@ isert_handle_scsi_cmd(struct isert_conn *isert_conn,
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imm_data = cmd->immediate_data;
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imm_data_len = cmd->first_burst_len;
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unsol_data = cmd->unsolicited_data;
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data_len = cmd->se_cmd.data_length;
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if (imm_data && imm_data_len == data_len)
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cmd->se_cmd.se_cmd_flags |= SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC;
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rc = iscsit_process_scsi_cmd(conn, cmd, hdr);
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if (rc < 0) {
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return 0;
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@ -1326,13 +1341,20 @@ isert_handle_scsi_cmd(struct isert_conn *isert_conn,
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if (!imm_data)
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return 0;
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sg = &cmd->se_cmd.t_data_sg[0];
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sg_nents = max(1UL, DIV_ROUND_UP(imm_data_len, PAGE_SIZE));
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isert_dbg("Copying Immediate SG: %p sg_nents: %u from %p imm_data_len: %d\n",
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sg, sg_nents, &rx_desc->data[0], imm_data_len);
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sg_copy_from_buffer(sg, sg_nents, &rx_desc->data[0], imm_data_len);
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if (imm_data_len != data_len) {
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sg_nents = max(1UL, DIV_ROUND_UP(imm_data_len, PAGE_SIZE));
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sg_copy_from_buffer(cmd->se_cmd.t_data_sg, sg_nents,
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&rx_desc->data[0], imm_data_len);
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isert_dbg("Copy Immediate sg_nents: %u imm_data_len: %d\n",
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sg_nents, imm_data_len);
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} else {
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sg_init_table(&isert_cmd->sg, 1);
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cmd->se_cmd.t_data_sg = &isert_cmd->sg;
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cmd->se_cmd.t_data_nents = 1;
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sg_set_buf(&isert_cmd->sg, &rx_desc->data[0], imm_data_len);
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isert_dbg("Transfer Immediate imm_data_len: %d\n",
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imm_data_len);
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}
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cmd->write_data_done += imm_data_len;
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@ -1407,6 +1429,15 @@ isert_handle_iscsi_dataout(struct isert_conn *isert_conn,
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if (rc < 0)
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return rc;
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/*
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* multiple data-outs on the same command can arrive -
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* so post the buffer before hand
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*/
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rc = isert_post_recv(isert_conn, rx_desc);
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if (rc) {
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isert_err("ib_post_recv failed with %d\n", rc);
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return rc;
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}
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return 0;
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}
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@ -1479,7 +1510,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
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switch (opcode) {
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case ISCSI_OP_SCSI_CMD:
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cmd = isert_allocate_cmd(conn);
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cmd = isert_allocate_cmd(conn, rx_desc);
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if (!cmd)
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break;
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@ -1493,7 +1524,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
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rx_desc, (unsigned char *)hdr);
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break;
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case ISCSI_OP_NOOP_OUT:
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cmd = isert_allocate_cmd(conn);
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cmd = isert_allocate_cmd(conn, rx_desc);
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if (!cmd)
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break;
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@ -1506,7 +1537,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
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(unsigned char *)hdr);
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break;
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case ISCSI_OP_SCSI_TMFUNC:
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cmd = isert_allocate_cmd(conn);
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cmd = isert_allocate_cmd(conn, rx_desc);
|
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if (!cmd)
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break;
|
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|
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|
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@ -1514,22 +1545,20 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
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(unsigned char *)hdr);
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break;
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case ISCSI_OP_LOGOUT:
|
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cmd = isert_allocate_cmd(conn);
|
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cmd = isert_allocate_cmd(conn, rx_desc);
|
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if (!cmd)
|
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break;
|
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|
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ret = iscsit_handle_logout_cmd(conn, cmd, (unsigned char *)hdr);
|
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break;
|
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case ISCSI_OP_TEXT:
|
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if (be32_to_cpu(hdr->ttt) != 0xFFFFFFFF) {
|
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if (be32_to_cpu(hdr->ttt) != 0xFFFFFFFF)
|
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cmd = iscsit_find_cmd_from_itt(conn, hdr->itt);
|
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if (!cmd)
|
||||
break;
|
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} else {
|
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cmd = isert_allocate_cmd(conn);
|
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if (!cmd)
|
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break;
|
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}
|
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else
|
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cmd = isert_allocate_cmd(conn, rx_desc);
|
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|
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if (!cmd)
|
||||
break;
|
||||
|
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isert_cmd = iscsit_priv_cmd(cmd);
|
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ret = isert_handle_text_cmd(isert_conn, isert_cmd, cmd,
|
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|
|
@ -1589,7 +1618,7 @@ isert_rcv_completion(struct iser_rx_desc *desc,
|
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struct ib_device *ib_dev = isert_conn->cm_id->device;
|
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struct iscsi_hdr *hdr;
|
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u64 rx_dma;
|
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int rx_buflen, outstanding;
|
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int rx_buflen;
|
||||
|
||||
if ((char *)desc == isert_conn->login_req_buf) {
|
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rx_dma = isert_conn->login_req_dma;
|
||||
|
|
@ -1629,22 +1658,6 @@ isert_rcv_completion(struct iser_rx_desc *desc,
|
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DMA_FROM_DEVICE);
|
||||
|
||||
isert_conn->post_recv_buf_count--;
|
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isert_dbg("Decremented post_recv_buf_count: %d\n",
|
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isert_conn->post_recv_buf_count);
|
||||
|
||||
if ((char *)desc == isert_conn->login_req_buf)
|
||||
return;
|
||||
|
||||
outstanding = isert_conn->post_recv_buf_count;
|
||||
if (outstanding + ISERT_MIN_POSTED_RX <= ISERT_QP_MAX_RECV_DTOS) {
|
||||
int err, count = min(ISERT_QP_MAX_RECV_DTOS - outstanding,
|
||||
ISERT_MIN_POSTED_RX);
|
||||
err = isert_post_recv(isert_conn, count);
|
||||
if (err) {
|
||||
isert_err("isert_post_recv() count: %d failed, %d\n",
|
||||
count, err);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
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|
|
@ -2156,6 +2169,12 @@ isert_post_response(struct isert_conn *isert_conn, struct isert_cmd *isert_cmd)
|
|||
struct ib_send_wr *wr_failed;
|
||||
int ret;
|
||||
|
||||
ret = isert_post_recv(isert_conn, isert_cmd->rx_desc);
|
||||
if (ret) {
|
||||
isert_err("ib_post_recv failed with %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = ib_post_send(isert_conn->qp, &isert_cmd->tx_desc.send_wr,
|
||||
&wr_failed);
|
||||
if (ret) {
|
||||
|
|
@ -2950,6 +2969,12 @@ isert_put_datain(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
|
|||
&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;
|
||||
|
||||
rc = isert_post_recv(isert_conn, isert_cmd->rx_desc);
|
||||
if (rc) {
|
||||
isert_err("ib_post_recv failed with %d\n", rc);
|
||||
return rc;
|
||||
}
|
||||
}
|
||||
|
||||
rc = ib_post_send(isert_conn->qp, wr->send_wr, &wr_failed);
|
||||
|
|
@ -2999,9 +3024,16 @@ isert_get_dataout(struct iscsi_conn *conn, struct iscsi_cmd *cmd, bool recovery)
|
|||
static int
|
||||
isert_immediate_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state)
|
||||
{
|
||||
int ret;
|
||||
struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
|
||||
int ret = 0;
|
||||
|
||||
switch (state) {
|
||||
case ISTATE_REMOVE:
|
||||
spin_lock_bh(&conn->cmd_lock);
|
||||
list_del_init(&cmd->i_conn_node);
|
||||
spin_unlock_bh(&conn->cmd_lock);
|
||||
isert_put_cmd(isert_cmd, true);
|
||||
break;
|
||||
case ISTATE_SEND_NOPIN_WANT_RESPONSE:
|
||||
ret = isert_put_nopin(cmd, conn, false);
|
||||
break;
|
||||
|
|
@ -3106,10 +3138,10 @@ isert_setup_np(struct iscsi_np *np,
|
|||
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);
|
||||
sema_init(&isert_np->sem, 0);
|
||||
mutex_init(&isert_np->mutex);
|
||||
INIT_LIST_HEAD(&isert_np->accepted);
|
||||
INIT_LIST_HEAD(&isert_np->pending);
|
||||
isert_np->np = np;
|
||||
|
||||
/*
|
||||
|
|
@ -3125,7 +3157,7 @@ isert_setup_np(struct iscsi_np *np,
|
|||
goto out;
|
||||
}
|
||||
|
||||
isert_np->np_cm_id = isert_lid;
|
||||
isert_np->cm_id = isert_lid;
|
||||
np->np_context = isert_np;
|
||||
|
||||
return 0;
|
||||
|
|
@ -3214,7 +3246,7 @@ isert_accept_np(struct iscsi_np *np, struct iscsi_conn *conn)
|
|||
int ret;
|
||||
|
||||
accept_wait:
|
||||
ret = down_interruptible(&isert_np->np_sem);
|
||||
ret = down_interruptible(&isert_np->sem);
|
||||
if (ret)
|
||||
return -ENODEV;
|
||||
|
||||
|
|
@ -3231,15 +3263,15 @@ accept_wait:
|
|||
}
|
||||
spin_unlock_bh(&np->np_thread_lock);
|
||||
|
||||
mutex_lock(&isert_np->np_accept_mutex);
|
||||
if (list_empty(&isert_np->np_accept_list)) {
|
||||
mutex_unlock(&isert_np->np_accept_mutex);
|
||||
mutex_lock(&isert_np->mutex);
|
||||
if (list_empty(&isert_np->pending)) {
|
||||
mutex_unlock(&isert_np->mutex);
|
||||
goto accept_wait;
|
||||
}
|
||||
isert_conn = list_first_entry(&isert_np->np_accept_list,
|
||||
struct isert_conn, accept_node);
|
||||
list_del_init(&isert_conn->accept_node);
|
||||
mutex_unlock(&isert_np->np_accept_mutex);
|
||||
isert_conn = list_first_entry(&isert_np->pending,
|
||||
struct isert_conn, node);
|
||||
list_del_init(&isert_conn->node);
|
||||
mutex_unlock(&isert_np->mutex);
|
||||
|
||||
conn->context = isert_conn;
|
||||
isert_conn->conn = conn;
|
||||
|
|
@ -3257,28 +3289,39 @@ isert_free_np(struct iscsi_np *np)
|
|||
struct isert_np *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);
|
||||
if (isert_np->cm_id)
|
||||
rdma_destroy_id(isert_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.
|
||||
* up in accepted and pending lists.
|
||||
*/
|
||||
mutex_lock(&isert_np->np_accept_mutex);
|
||||
if (!list_empty(&isert_np->np_accept_list)) {
|
||||
isert_info("Still have isert connections, cleaning up...\n");
|
||||
mutex_lock(&isert_np->mutex);
|
||||
if (!list_empty(&isert_np->pending)) {
|
||||
isert_info("Still have isert pending connections\n");
|
||||
list_for_each_entry_safe(isert_conn, n,
|
||||
&isert_np->np_accept_list,
|
||||
accept_node) {
|
||||
&isert_np->pending,
|
||||
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);
|
||||
|
||||
if (!list_empty(&isert_np->accepted)) {
|
||||
isert_info("Still have isert accepted connections\n");
|
||||
list_for_each_entry_safe(isert_conn, n,
|
||||
&isert_np->accepted,
|
||||
node) {
|
||||
isert_info("cleaning isert_conn %p state (%d)\n",
|
||||
isert_conn, isert_conn->state);
|
||||
isert_connect_release(isert_conn);
|
||||
}
|
||||
}
|
||||
mutex_unlock(&isert_np->mutex);
|
||||
|
||||
np->np_context = NULL;
|
||||
kfree(isert_np);
|
||||
|
|
@ -3345,6 +3388,41 @@ isert_wait4flush(struct isert_conn *isert_conn)
|
|||
wait_for_completion(&isert_conn->wait_comp_err);
|
||||
}
|
||||
|
||||
/**
|
||||
* isert_put_unsol_pending_cmds() - Drop commands waiting for
|
||||
* unsolicitate dataout
|
||||
* @conn: iscsi connection
|
||||
*
|
||||
* We might still have commands that are waiting for unsolicited
|
||||
* dataouts messages. We must put the extra reference on those
|
||||
* before blocking on the target_wait_for_session_cmds
|
||||
*/
|
||||
static void
|
||||
isert_put_unsol_pending_cmds(struct iscsi_conn *conn)
|
||||
{
|
||||
struct iscsi_cmd *cmd, *tmp;
|
||||
static LIST_HEAD(drop_cmd_list);
|
||||
|
||||
spin_lock_bh(&conn->cmd_lock);
|
||||
list_for_each_entry_safe(cmd, tmp, &conn->conn_cmd_list, i_conn_node) {
|
||||
if ((cmd->cmd_flags & ICF_NON_IMMEDIATE_UNSOLICITED_DATA) &&
|
||||
(cmd->write_data_done < conn->sess->sess_ops->FirstBurstLength) &&
|
||||
(cmd->write_data_done < cmd->se_cmd.data_length))
|
||||
list_move_tail(&cmd->i_conn_node, &drop_cmd_list);
|
||||
}
|
||||
spin_unlock_bh(&conn->cmd_lock);
|
||||
|
||||
list_for_each_entry_safe(cmd, tmp, &drop_cmd_list, i_conn_node) {
|
||||
list_del_init(&cmd->i_conn_node);
|
||||
if (cmd->i_state != ISTATE_REMOVE) {
|
||||
struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
|
||||
|
||||
isert_info("conn %p dropping cmd %p\n", conn, cmd);
|
||||
isert_put_cmd(isert_cmd, true);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void isert_wait_conn(struct iscsi_conn *conn)
|
||||
{
|
||||
struct isert_conn *isert_conn = conn->context;
|
||||
|
|
@ -3363,8 +3441,9 @@ static void isert_wait_conn(struct iscsi_conn *conn)
|
|||
isert_conn_terminate(isert_conn);
|
||||
mutex_unlock(&isert_conn->mutex);
|
||||
|
||||
isert_wait4cmds(conn);
|
||||
isert_wait4flush(isert_conn);
|
||||
isert_put_unsol_pending_cmds(conn);
|
||||
isert_wait4cmds(conn);
|
||||
isert_wait4logout(isert_conn);
|
||||
|
||||
queue_work(isert_release_wq, &isert_conn->release_work);
|
||||
|
|
|
|||
|
|
@ -113,7 +113,6 @@ enum {
|
|||
};
|
||||
|
||||
struct isert_rdma_wr {
|
||||
struct list_head wr_list;
|
||||
struct isert_cmd *isert_cmd;
|
||||
enum iser_ib_op_code iser_ib_op;
|
||||
struct ib_sge *ib_sge;
|
||||
|
|
@ -134,14 +133,13 @@ struct isert_cmd {
|
|||
uint64_t write_va;
|
||||
u64 pdu_buf_dma;
|
||||
u32 pdu_buf_len;
|
||||
u32 read_va_off;
|
||||
u32 write_va_off;
|
||||
u32 rdma_wr_num;
|
||||
struct isert_conn *conn;
|
||||
struct iscsi_cmd *iscsi_cmd;
|
||||
struct iser_tx_desc tx_desc;
|
||||
struct iser_rx_desc *rx_desc;
|
||||
struct isert_rdma_wr rdma_wr;
|
||||
struct work_struct comp_work;
|
||||
struct scatterlist sg;
|
||||
};
|
||||
|
||||
struct isert_device;
|
||||
|
|
@ -159,11 +157,10 @@ struct isert_conn {
|
|||
u64 login_req_dma;
|
||||
int login_req_len;
|
||||
u64 login_rsp_dma;
|
||||
unsigned int rx_desc_head;
|
||||
struct iser_rx_desc *rx_descs;
|
||||
struct ib_recv_wr rx_wr[ISERT_MIN_POSTED_RX];
|
||||
struct ib_recv_wr rx_wr[ISERT_QP_MAX_RECV_DTOS];
|
||||
struct iscsi_conn *conn;
|
||||
struct list_head accept_node;
|
||||
struct list_head node;
|
||||
struct completion login_comp;
|
||||
struct completion login_req_comp;
|
||||
struct iser_tx_desc login_tx_desc;
|
||||
|
|
@ -222,9 +219,9 @@ 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;
|
||||
struct list_head np_accept_list;
|
||||
struct completion np_login_comp;
|
||||
struct semaphore sem;
|
||||
struct rdma_cm_id *cm_id;
|
||||
struct mutex mutex;
|
||||
struct list_head accepted;
|
||||
struct list_head pending;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -407,6 +407,7 @@ int iscsi_create_default_params(struct iscsi_param_list **param_list_ptr)
|
|||
TYPERANGE_UTF8, USE_INITIAL_ONLY);
|
||||
if (!param)
|
||||
goto out;
|
||||
|
||||
/*
|
||||
* Extra parameters for ISER from RFC-5046
|
||||
*/
|
||||
|
|
@ -496,9 +497,9 @@ int iscsi_set_keys_to_negotiate(
|
|||
} else if (!strcmp(param->name, SESSIONTYPE)) {
|
||||
SET_PSTATE_NEGOTIATE(param);
|
||||
} else if (!strcmp(param->name, IFMARKER)) {
|
||||
SET_PSTATE_NEGOTIATE(param);
|
||||
SET_PSTATE_REJECT(param);
|
||||
} else if (!strcmp(param->name, OFMARKER)) {
|
||||
SET_PSTATE_NEGOTIATE(param);
|
||||
SET_PSTATE_REJECT(param);
|
||||
} else if (!strcmp(param->name, IFMARKINT)) {
|
||||
SET_PSTATE_REJECT(param);
|
||||
} else if (!strcmp(param->name, OFMARKINT)) {
|
||||
|
|
|
|||
|
|
@ -62,22 +62,13 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
|
|||
struct se_session *se_sess = se_cmd->se_sess;
|
||||
struct se_node_acl *nacl = se_sess->se_node_acl;
|
||||
struct se_dev_entry *deve;
|
||||
sense_reason_t ret = TCM_NO_SENSE;
|
||||
|
||||
rcu_read_lock();
|
||||
deve = target_nacl_find_deve(nacl, unpacked_lun);
|
||||
if (deve) {
|
||||
atomic_long_inc(&deve->total_cmds);
|
||||
|
||||
if ((se_cmd->data_direction == DMA_TO_DEVICE) &&
|
||||
(deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) {
|
||||
pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN"
|
||||
" Access for 0x%08llx\n",
|
||||
se_cmd->se_tfo->get_fabric_name(),
|
||||
unpacked_lun);
|
||||
rcu_read_unlock();
|
||||
return TCM_WRITE_PROTECTED;
|
||||
}
|
||||
|
||||
if (se_cmd->data_direction == DMA_TO_DEVICE)
|
||||
atomic_long_add(se_cmd->data_length,
|
||||
&deve->write_bytes);
|
||||
|
|
@ -93,6 +84,17 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
|
|||
|
||||
percpu_ref_get(&se_lun->lun_ref);
|
||||
se_cmd->lun_ref_active = true;
|
||||
|
||||
if ((se_cmd->data_direction == DMA_TO_DEVICE) &&
|
||||
(deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) {
|
||||
pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN"
|
||||
" Access for 0x%08llx\n",
|
||||
se_cmd->se_tfo->get_fabric_name(),
|
||||
unpacked_lun);
|
||||
rcu_read_unlock();
|
||||
ret = TCM_WRITE_PROTECTED;
|
||||
goto ref_dev;
|
||||
}
|
||||
}
|
||||
rcu_read_unlock();
|
||||
|
||||
|
|
@ -109,12 +111,6 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
|
|||
unpacked_lun);
|
||||
return TCM_NON_EXISTENT_LUN;
|
||||
}
|
||||
/*
|
||||
* Force WRITE PROTECT for virtual LUN 0
|
||||
*/
|
||||
if ((se_cmd->data_direction != DMA_FROM_DEVICE) &&
|
||||
(se_cmd->data_direction != DMA_NONE))
|
||||
return TCM_WRITE_PROTECTED;
|
||||
|
||||
se_lun = se_sess->se_tpg->tpg_virt_lun0;
|
||||
se_cmd->se_lun = se_sess->se_tpg->tpg_virt_lun0;
|
||||
|
|
@ -123,6 +119,15 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
|
|||
|
||||
percpu_ref_get(&se_lun->lun_ref);
|
||||
se_cmd->lun_ref_active = true;
|
||||
|
||||
/*
|
||||
* Force WRITE PROTECT for virtual LUN 0
|
||||
*/
|
||||
if ((se_cmd->data_direction != DMA_FROM_DEVICE) &&
|
||||
(se_cmd->data_direction != DMA_NONE)) {
|
||||
ret = TCM_WRITE_PROTECTED;
|
||||
goto ref_dev;
|
||||
}
|
||||
}
|
||||
/*
|
||||
* RCU reference protected by percpu se_lun->lun_ref taken above that
|
||||
|
|
@ -130,6 +135,7 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
|
|||
* pointer can be kfree_rcu() by the final se_lun->lun_group put via
|
||||
* target_core_fabric_configfs.c:target_fabric_port_release
|
||||
*/
|
||||
ref_dev:
|
||||
se_cmd->se_dev = rcu_dereference_raw(se_lun->lun_se_dev);
|
||||
atomic_long_inc(&se_cmd->se_dev->num_cmds);
|
||||
|
||||
|
|
@ -140,7 +146,7 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
|
|||
atomic_long_add(se_cmd->data_length,
|
||||
&se_cmd->se_dev->read_bytes);
|
||||
|
||||
return 0;
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL(transport_lookup_cmd_lun);
|
||||
|
||||
|
|
@ -427,8 +433,6 @@ void core_disable_device_list_for_node(
|
|||
|
||||
hlist_del_rcu(&orig->link);
|
||||
clear_bit(DEF_PR_REG_ACTIVE, &orig->deve_flags);
|
||||
rcu_assign_pointer(orig->se_lun, NULL);
|
||||
rcu_assign_pointer(orig->se_lun_acl, NULL);
|
||||
orig->lun_flags = 0;
|
||||
orig->creation_time = 0;
|
||||
orig->attach_count--;
|
||||
|
|
@ -439,6 +443,9 @@ void core_disable_device_list_for_node(
|
|||
kref_put(&orig->pr_kref, target_pr_kref_release);
|
||||
wait_for_completion(&orig->pr_comp);
|
||||
|
||||
rcu_assign_pointer(orig->se_lun, NULL);
|
||||
rcu_assign_pointer(orig->se_lun_acl, NULL);
|
||||
|
||||
kfree_rcu(orig, rcu_head);
|
||||
|
||||
core_scsi3_free_pr_reg_from_nacl(dev, nacl);
|
||||
|
|
|
|||
|
|
@ -187,5 +187,5 @@ core_delete_hba(struct se_hba *hba)
|
|||
|
||||
bool target_sense_desc_format(struct se_device *dev)
|
||||
{
|
||||
return dev->transport->get_blocks(dev) > U32_MAX;
|
||||
return (dev) ? dev->transport->get_blocks(dev) > U32_MAX : false;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -105,6 +105,8 @@ static int iblock_configure_device(struct se_device *dev)
|
|||
mode = FMODE_READ|FMODE_EXCL;
|
||||
if (!ib_dev->ibd_readonly)
|
||||
mode |= FMODE_WRITE;
|
||||
else
|
||||
dev->dev_flags |= DF_READ_ONLY;
|
||||
|
||||
bd = blkdev_get_by_path(ib_dev->ibd_udev_path, mode, ib_dev);
|
||||
if (IS_ERR(bd)) {
|
||||
|
|
|
|||
|
|
@ -618,7 +618,7 @@ static struct t10_pr_registration *__core_scsi3_do_alloc_registration(
|
|||
struct se_device *dev,
|
||||
struct se_node_acl *nacl,
|
||||
struct se_lun *lun,
|
||||
struct se_dev_entry *deve,
|
||||
struct se_dev_entry *dest_deve,
|
||||
u64 mapped_lun,
|
||||
unsigned char *isid,
|
||||
u64 sa_res_key,
|
||||
|
|
@ -640,7 +640,29 @@ static struct t10_pr_registration *__core_scsi3_do_alloc_registration(
|
|||
INIT_LIST_HEAD(&pr_reg->pr_reg_atp_mem_list);
|
||||
atomic_set(&pr_reg->pr_res_holders, 0);
|
||||
pr_reg->pr_reg_nacl = nacl;
|
||||
pr_reg->pr_reg_deve = deve;
|
||||
/*
|
||||
* For destination registrations for ALL_TG_PT=1 and SPEC_I_PT=1,
|
||||
* the se_dev_entry->pr_ref will have been already obtained by
|
||||
* core_get_se_deve_from_rtpi() or __core_scsi3_alloc_registration().
|
||||
*
|
||||
* Otherwise, locate se_dev_entry now and obtain a reference until
|
||||
* registration completes in __core_scsi3_add_registration().
|
||||
*/
|
||||
if (dest_deve) {
|
||||
pr_reg->pr_reg_deve = dest_deve;
|
||||
} else {
|
||||
rcu_read_lock();
|
||||
pr_reg->pr_reg_deve = target_nacl_find_deve(nacl, mapped_lun);
|
||||
if (!pr_reg->pr_reg_deve) {
|
||||
rcu_read_unlock();
|
||||
pr_err("Unable to locate PR deve %s mapped_lun: %llu\n",
|
||||
nacl->initiatorname, mapped_lun);
|
||||
kmem_cache_free(t10_pr_reg_cache, pr_reg);
|
||||
return NULL;
|
||||
}
|
||||
kref_get(&pr_reg->pr_reg_deve->pr_kref);
|
||||
rcu_read_unlock();
|
||||
}
|
||||
pr_reg->pr_res_mapped_lun = mapped_lun;
|
||||
pr_reg->pr_aptpl_target_lun = lun->unpacked_lun;
|
||||
pr_reg->tg_pt_sep_rtpi = lun->lun_rtpi;
|
||||
|
|
@ -936,17 +958,29 @@ static int __core_scsi3_check_aptpl_registration(
|
|||
!(strcmp(pr_reg->pr_tport, t_port)) &&
|
||||
(pr_reg->pr_reg_tpgt == tpgt) &&
|
||||
(pr_reg->pr_aptpl_target_lun == target_lun)) {
|
||||
/*
|
||||
* Obtain the ->pr_reg_deve pointer + reference, that
|
||||
* is released by __core_scsi3_add_registration() below.
|
||||
*/
|
||||
rcu_read_lock();
|
||||
pr_reg->pr_reg_deve = target_nacl_find_deve(nacl, mapped_lun);
|
||||
if (!pr_reg->pr_reg_deve) {
|
||||
pr_err("Unable to locate PR APTPL %s mapped_lun:"
|
||||
" %llu\n", nacl->initiatorname, mapped_lun);
|
||||
rcu_read_unlock();
|
||||
continue;
|
||||
}
|
||||
kref_get(&pr_reg->pr_reg_deve->pr_kref);
|
||||
rcu_read_unlock();
|
||||
|
||||
pr_reg->pr_reg_nacl = nacl;
|
||||
pr_reg->tg_pt_sep_rtpi = lun->lun_rtpi;
|
||||
|
||||
list_del(&pr_reg->pr_reg_aptpl_list);
|
||||
spin_unlock(&pr_tmpl->aptpl_reg_lock);
|
||||
/*
|
||||
* At this point all of the pointers in *pr_reg will
|
||||
* be setup, so go ahead and add the registration.
|
||||
*/
|
||||
|
||||
__core_scsi3_add_registration(dev, nacl, pr_reg, 0, 0);
|
||||
/*
|
||||
* If this registration is the reservation holder,
|
||||
|
|
@ -1044,18 +1078,11 @@ static void __core_scsi3_add_registration(
|
|||
|
||||
__core_scsi3_dump_registration(tfo, dev, nacl, pr_reg, register_type);
|
||||
spin_unlock(&pr_tmpl->registration_lock);
|
||||
|
||||
rcu_read_lock();
|
||||
deve = pr_reg->pr_reg_deve;
|
||||
if (deve)
|
||||
set_bit(DEF_PR_REG_ACTIVE, &deve->deve_flags);
|
||||
rcu_read_unlock();
|
||||
|
||||
/*
|
||||
* Skip extra processing for ALL_TG_PT=0 or REGISTER_AND_MOVE.
|
||||
*/
|
||||
if (!pr_reg->pr_reg_all_tg_pt || register_move)
|
||||
return;
|
||||
goto out;
|
||||
/*
|
||||
* Walk pr_reg->pr_reg_atp_list and add registrations for ALL_TG_PT=1
|
||||
* allocated in __core_scsi3_alloc_registration()
|
||||
|
|
@ -1075,19 +1102,31 @@ static void __core_scsi3_add_registration(
|
|||
__core_scsi3_dump_registration(tfo, dev, nacl_tmp, pr_reg_tmp,
|
||||
register_type);
|
||||
spin_unlock(&pr_tmpl->registration_lock);
|
||||
|
||||
/*
|
||||
* Drop configfs group dependency reference and deve->pr_kref
|
||||
* obtained from __core_scsi3_alloc_registration() code.
|
||||
*/
|
||||
rcu_read_lock();
|
||||
deve = pr_reg_tmp->pr_reg_deve;
|
||||
if (deve)
|
||||
if (deve) {
|
||||
set_bit(DEF_PR_REG_ACTIVE, &deve->deve_flags);
|
||||
core_scsi3_lunacl_undepend_item(deve);
|
||||
pr_reg_tmp->pr_reg_deve = NULL;
|
||||
}
|
||||
rcu_read_unlock();
|
||||
|
||||
/*
|
||||
* Drop configfs group dependency reference from
|
||||
* __core_scsi3_alloc_registration()
|
||||
*/
|
||||
core_scsi3_lunacl_undepend_item(pr_reg_tmp->pr_reg_deve);
|
||||
}
|
||||
out:
|
||||
/*
|
||||
* Drop deve->pr_kref obtained in __core_scsi3_do_alloc_registration()
|
||||
*/
|
||||
rcu_read_lock();
|
||||
deve = pr_reg->pr_reg_deve;
|
||||
if (deve) {
|
||||
set_bit(DEF_PR_REG_ACTIVE, &deve->deve_flags);
|
||||
kref_put(&deve->pr_kref, target_pr_kref_release);
|
||||
pr_reg->pr_reg_deve = NULL;
|
||||
}
|
||||
rcu_read_unlock();
|
||||
}
|
||||
|
||||
static int core_scsi3_alloc_registration(
|
||||
|
|
@ -1785,9 +1824,11 @@ core_scsi3_decode_spec_i_port(
|
|||
dest_node_acl->initiatorname, i_buf, (dest_se_deve) ?
|
||||
dest_se_deve->mapped_lun : 0);
|
||||
|
||||
if (!dest_se_deve)
|
||||
if (!dest_se_deve) {
|
||||
kref_put(&local_pr_reg->pr_reg_deve->pr_kref,
|
||||
target_pr_kref_release);
|
||||
continue;
|
||||
|
||||
}
|
||||
core_scsi3_lunacl_undepend_item(dest_se_deve);
|
||||
core_scsi3_nodeacl_undepend_item(dest_node_acl);
|
||||
core_scsi3_tpg_undepend_item(dest_tpg);
|
||||
|
|
@ -1823,9 +1864,11 @@ out:
|
|||
|
||||
kmem_cache_free(t10_pr_reg_cache, dest_pr_reg);
|
||||
|
||||
if (!dest_se_deve)
|
||||
if (!dest_se_deve) {
|
||||
kref_put(&local_pr_reg->pr_reg_deve->pr_kref,
|
||||
target_pr_kref_release);
|
||||
continue;
|
||||
|
||||
}
|
||||
core_scsi3_lunacl_undepend_item(dest_se_deve);
|
||||
core_scsi3_nodeacl_undepend_item(dest_node_acl);
|
||||
core_scsi3_tpg_undepend_item(dest_tpg);
|
||||
|
|
|
|||
|
|
@ -668,7 +668,10 @@ int core_tpg_add_lun(
|
|||
list_add_tail(&lun->lun_dev_link, &dev->dev_sep_list);
|
||||
spin_unlock(&dev->se_port_lock);
|
||||
|
||||
lun->lun_access = lun_access;
|
||||
if (dev->dev_flags & DF_READ_ONLY)
|
||||
lun->lun_access = TRANSPORT_LUNFLAGS_READ_ONLY;
|
||||
else
|
||||
lun->lun_access = lun_access;
|
||||
if (!(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE))
|
||||
hlist_add_head_rcu(&lun->link, &tpg->tpg_lun_hlist);
|
||||
mutex_unlock(&tpg->tpg_lun_mutex);
|
||||
|
|
|
|||
|
|
@ -730,6 +730,7 @@ struct se_device {
|
|||
#define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
|
||||
#define DF_USING_UDEV_PATH 0x00000008
|
||||
#define DF_USING_ALIAS 0x00000010
|
||||
#define DF_READ_ONLY 0x00000020
|
||||
/* Physical device queue depth */
|
||||
u32 queue_depth;
|
||||
/* Used for SPC-2 reservations enforce of ISIDs */
|
||||
|
|
|
|||
Loading…
Reference in New Issue