diff options
Diffstat (limited to 'drivers/infiniband/ulp/iser/iscsi_iser.c')
| -rw-r--r-- | drivers/infiniband/ulp/iser/iscsi_iser.c | 66 |
1 files changed, 45 insertions, 21 deletions
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index eb7973957a6..93ce62fe159 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -344,7 +344,6 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session, int is_leading) { struct iscsi_conn *conn = cls_conn->dd_data; - struct iscsi_session *session; struct iser_conn *ib_conn; struct iscsi_endpoint *ep; int error; @@ -363,9 +362,17 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session, } ib_conn = ep->dd_data; - session = conn->session; - if (iser_alloc_rx_descriptors(ib_conn, session)) - return -ENOMEM; + mutex_lock(&ib_conn->state_mutex); + if (ib_conn->state != ISER_CONN_UP) { + error = -EINVAL; + iser_err("iser_conn %p state is %d, teardown started\n", + ib_conn, ib_conn->state); + goto out; + } + + error = iser_alloc_rx_descriptors(ib_conn, conn->session); + if (error) + goto out; /* binds the iSER connection retrieved from the previously * connected ep_handle to the iSCSI layer connection. exchanges @@ -375,7 +382,9 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session, conn->dd_data = ib_conn; ib_conn->iscsi_conn = conn; - return 0; +out: + mutex_unlock(&ib_conn->state_mutex); + return error; } static int @@ -596,20 +605,28 @@ iscsi_iser_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr, struct iser_conn *ib_conn; struct iscsi_endpoint *ep; - ep = iscsi_create_endpoint(sizeof(*ib_conn)); + ep = iscsi_create_endpoint(0); if (!ep) return ERR_PTR(-ENOMEM); - ib_conn = ep->dd_data; + ib_conn = kzalloc(sizeof(*ib_conn), GFP_KERNEL); + if (!ib_conn) { + err = -ENOMEM; + goto failure; + } + + ep->dd_data = ib_conn; ib_conn->ep = ep; iser_conn_init(ib_conn); - err = iser_connect(ib_conn, NULL, (struct sockaddr_in *)dst_addr, - non_blocking); + err = iser_connect(ib_conn, NULL, dst_addr, non_blocking); if (err) - return ERR_PTR(err); + goto failure; return ep; +failure: + iscsi_destroy_endpoint(ep); + return ERR_PTR(err); } static int @@ -619,15 +636,16 @@ iscsi_iser_ep_poll(struct iscsi_endpoint *ep, int timeout_ms) int rc; ib_conn = ep->dd_data; - rc = wait_event_interruptible_timeout(ib_conn->wait, - ib_conn->state == ISER_CONN_UP, - msecs_to_jiffies(timeout_ms)); - + rc = wait_for_completion_interruptible_timeout(&ib_conn->up_completion, + msecs_to_jiffies(timeout_ms)); /* if conn establishment failed, return error code to iscsi */ - if (!rc && - (ib_conn->state == ISER_CONN_TERMINATING || - ib_conn->state == ISER_CONN_DOWN)) - rc = -1; + if (rc == 0) { + mutex_lock(&ib_conn->state_mutex); + if (ib_conn->state == ISER_CONN_TERMINATING || + ib_conn->state == ISER_CONN_DOWN) + rc = -1; + mutex_unlock(&ib_conn->state_mutex); + } iser_info("ib conn %p rc = %d\n", ib_conn, rc); @@ -646,19 +664,25 @@ iscsi_iser_ep_disconnect(struct iscsi_endpoint *ep) ib_conn = ep->dd_data; iser_info("ep %p ib conn %p state %d\n", ep, ib_conn, ib_conn->state); + mutex_lock(&ib_conn->state_mutex); iser_conn_terminate(ib_conn); /* - * if iser_conn and iscsi_conn are bound, we must wait iscsi_conn_stop - * call and ISER_CONN_DOWN state before freeing the iser resources. - * otherwise we are safe to free resources immediately. + * if iser_conn and iscsi_conn are bound, we must wait for + * iscsi_conn_stop and flush errors completion before freeing + * the iser resources. Otherwise we are safe to free resources + * immediately. */ if (ib_conn->iscsi_conn) { INIT_WORK(&ib_conn->release_work, iser_release_work); queue_work(release_wq, &ib_conn->release_work); + mutex_unlock(&ib_conn->state_mutex); } else { + ib_conn->state = ISER_CONN_DOWN; + mutex_unlock(&ib_conn->state_mutex); iser_conn_release(ib_conn); } + iscsi_destroy_endpoint(ep); } static umode_t iser_attr_is_visible(int param_type, int param) |