diff options
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/ulp/isert/ib_isert.c | 104 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/isert/ib_isert.h | 4 |
2 files changed, 48 insertions, 60 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index 45ac70bfd7e3..fe23f372c765 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -392,8 +392,8 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event) isert_conn->state = ISER_CONN_INIT; INIT_LIST_HEAD(&isert_conn->conn_accept_node); init_completion(&isert_conn->conn_login_comp); - init_waitqueue_head(&isert_conn->conn_wait); - init_waitqueue_head(&isert_conn->conn_wait_comp_err); + init_completion(&isert_conn->conn_wait); + init_completion(&isert_conn->conn_wait_comp_err); kref_init(&isert_conn->conn_kref); kref_get(&isert_conn->conn_kref); mutex_init(&isert_conn->conn_mutex); @@ -550,11 +550,11 @@ isert_disconnect_work(struct work_struct *work) pr_debug("isert_disconnect_work(): >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); mutex_lock(&isert_conn->conn_mutex); - isert_conn->state = ISER_CONN_DOWN; + if (isert_conn->state == ISER_CONN_UP) + isert_conn->state = ISER_CONN_TERMINATING; if (isert_conn->post_recv_buf_count == 0 && atomic_read(&isert_conn->post_send_buf_count) == 0) { - pr_debug("Calling wake_up(&isert_conn->conn_wait);\n"); mutex_unlock(&isert_conn->conn_mutex); goto wake_up; } @@ -574,7 +574,7 @@ isert_disconnect_work(struct work_struct *work) mutex_unlock(&isert_conn->conn_mutex); wake_up: - wake_up(&isert_conn->conn_wait); + complete(&isert_conn->conn_wait); isert_put_conn(isert_conn); } @@ -1348,7 +1348,7 @@ isert_do_control_comp(struct work_struct *work) pr_debug("Calling iscsit_logout_post_handler >>>>>>>>>>>>>>\n"); /* * Call atomic_dec(&isert_conn->post_send_buf_count) - * from isert_free_conn() + * from isert_wait_conn() */ isert_conn->logout_posted = true; iscsit_logout_post_handler(cmd, cmd->conn); @@ -1426,31 +1426,38 @@ isert_send_completion(struct iser_tx_desc *tx_desc, } static void -isert_cq_comp_err(struct iser_tx_desc *tx_desc, struct isert_conn *isert_conn) +isert_cq_tx_comp_err(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; - if (tx_desc) { - struct isert_cmd *isert_cmd = tx_desc->isert_cmd; + if (!isert_cmd) + isert_unmap_tx_desc(tx_desc, ib_dev); + else + isert_completion_put(tx_desc, isert_cmd, ib_dev); +} - if (!isert_cmd) - isert_unmap_tx_desc(tx_desc, ib_dev); - else - isert_completion_put(tx_desc, isert_cmd, ib_dev); +static void +isert_cq_rx_comp_err(struct isert_conn *isert_conn) +{ + struct iscsi_conn *conn = isert_conn->conn; + + if (isert_conn->post_recv_buf_count) + return; + + if (conn->sess) { + target_sess_cmd_list_set_waiting(conn->sess->se_sess); + target_wait_for_sess_cmds(conn->sess->se_sess); } - if (isert_conn->post_recv_buf_count == 0 && - atomic_read(&isert_conn->post_send_buf_count) == 0) { - pr_debug("isert_cq_comp_err >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); - pr_debug("Calling wake_up from isert_cq_comp_err\n"); + while (atomic_read(&isert_conn->post_send_buf_count)) + msleep(3000); - mutex_lock(&isert_conn->conn_mutex); - if (isert_conn->state != ISER_CONN_DOWN) - isert_conn->state = ISER_CONN_TERMINATING; - mutex_unlock(&isert_conn->conn_mutex); + mutex_lock(&isert_conn->conn_mutex); + isert_conn->state = ISER_CONN_DOWN; + mutex_unlock(&isert_conn->conn_mutex); - wake_up(&isert_conn->conn_wait_comp_err); - } + complete(&isert_conn->conn_wait_comp_err); } static void @@ -1475,7 +1482,7 @@ isert_cq_tx_work(struct work_struct *work) pr_debug("TX wc.status != IB_WC_SUCCESS >>>>>>>>>>>>>>\n"); pr_debug("TX wc.status: 0x%08x\n", wc.status); atomic_dec(&isert_conn->post_send_buf_count); - isert_cq_comp_err(tx_desc, isert_conn); + isert_cq_tx_comp_err(tx_desc, isert_conn); } } @@ -1517,7 +1524,7 @@ isert_cq_rx_work(struct work_struct *work) pr_debug("RX wc.status: 0x%08x\n", wc.status); isert_conn->post_recv_buf_count--; - isert_cq_comp_err(NULL, isert_conn); + isert_cq_rx_comp_err(isert_conn); } } @@ -2218,22 +2225,11 @@ isert_free_np(struct iscsi_np *np) kfree(isert_np); } -static int isert_check_state(struct isert_conn *isert_conn, int state) -{ - int ret; - - mutex_lock(&isert_conn->conn_mutex); - ret = (isert_conn->state == state); - mutex_unlock(&isert_conn->conn_mutex); - - return ret; -} - -static void isert_free_conn(struct iscsi_conn *conn) +static void isert_wait_conn(struct iscsi_conn *conn) { struct isert_conn *isert_conn = conn->context; - pr_debug("isert_free_conn: Starting \n"); + pr_debug("isert_wait_conn: Starting \n"); /* * Decrement post_send_buf_count for special case when called * from isert_do_control_comp() -> iscsit_logout_post_handler() @@ -2243,38 +2239,29 @@ static void isert_free_conn(struct iscsi_conn *conn) atomic_dec(&isert_conn->post_send_buf_count); if (isert_conn->conn_cm_id && isert_conn->state != ISER_CONN_DOWN) { - pr_debug("Calling rdma_disconnect from isert_free_conn\n"); + 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.. */ - if (isert_conn->state == ISER_CONN_UP) { - pr_debug("isert_free_conn: Before wait_event comp_err %d\n", - isert_conn->state); - mutex_unlock(&isert_conn->conn_mutex); - - wait_event(isert_conn->conn_wait_comp_err, - (isert_check_state(isert_conn, ISER_CONN_TERMINATING))); - - wait_event(isert_conn->conn_wait, - (isert_check_state(isert_conn, ISER_CONN_DOWN))); - - isert_put_conn(isert_conn); - return; - } if (isert_conn->state == ISER_CONN_INIT) { mutex_unlock(&isert_conn->conn_mutex); - isert_put_conn(isert_conn); return; } - pr_debug("isert_free_conn: wait_event conn_wait %d\n", - isert_conn->state); + if (isert_conn->state == ISER_CONN_UP) + isert_conn->state = ISER_CONN_TERMINATING; mutex_unlock(&isert_conn->conn_mutex); - wait_event(isert_conn->conn_wait, - (isert_check_state(isert_conn, ISER_CONN_DOWN))); + wait_for_completion(&isert_conn->conn_wait_comp_err); + + wait_for_completion(&isert_conn->conn_wait); +} + +static void isert_free_conn(struct iscsi_conn *conn) +{ + struct isert_conn *isert_conn = conn->context; isert_put_conn(isert_conn); } @@ -2286,6 +2273,7 @@ static struct iscsit_transport iser_target_transport = { .iscsit_setup_np = isert_setup_np, .iscsit_accept_np = isert_accept_np, .iscsit_free_np = isert_free_np, + .iscsit_wait_conn = isert_wait_conn, .iscsit_free_conn = isert_free_conn, .iscsit_alloc_cmd = isert_alloc_cmd, .iscsit_get_login_rx = isert_get_login_rx, diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h index 5795c82a2306..b9d6cc6917cf 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.h +++ b/drivers/infiniband/ulp/isert/ib_isert.h @@ -103,8 +103,8 @@ struct isert_conn { struct isert_device *conn_device; struct work_struct conn_logout_work; struct mutex conn_mutex; - wait_queue_head_t conn_wait; - wait_queue_head_t conn_wait_comp_err; + struct completion conn_wait; + struct completion conn_wait_comp_err; struct kref conn_kref; }; |