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-rw-r--r--drivers/infiniband/ulp/iser/iscsi_iser.c13
-rw-r--r--drivers/infiniband/ulp/iser/iscsi_iser.h3
-rw-r--r--drivers/infiniband/ulp/iser/iser_verbs.c29
3 files changed, 22 insertions, 23 deletions
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c
index 3dc853c9e4bf..61ee91d88380 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
@@ -627,10 +627,8 @@ 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 == 0) {
mutex_lock(&ib_conn->state_mutex);
@@ -661,9 +659,10 @@ iscsi_iser_ep_disconnect(struct iscsi_endpoint *ep)
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);
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index c7efc5a91604..c877dad381cb 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -326,7 +326,6 @@ struct iser_conn {
struct iser_device *device; /* device context */
struct rdma_cm_id *cma_id; /* CMA ID */
struct ib_qp *qp; /* QP */
- wait_queue_head_t wait; /* waitq for conn/disconn */
unsigned qp_max_recv_dtos; /* num of rx buffers */
unsigned qp_max_recv_dtos_mask; /* above minus 1 */
unsigned min_posted_rx; /* qp_max_recv_dtos >> 2 */
@@ -336,6 +335,8 @@ struct iser_conn {
struct work_struct release_work;
struct completion stop_completion;
struct mutex state_mutex;
+ struct completion flush_completion;
+ struct completion up_completion;
struct list_head conn_list; /* entry in ig conn list */
char *login_buf;
diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index 6e7e54d883ab..06a49b3df3fd 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -582,15 +582,19 @@ static int iser_conn_state_comp_exch(struct iser_conn *ib_conn,
void iser_release_work(struct work_struct *work)
{
struct iser_conn *ib_conn;
+ int rc;
ib_conn = container_of(work, struct iser_conn, release_work);
/* wait for .conn_stop callback */
- wait_for_completion(&ib_conn->stop_completion);
+ rc = wait_for_completion_timeout(&ib_conn->stop_completion, 30 * HZ);
+ WARN_ON(rc == 0);
/* wait for the qp`s post send and post receive buffers to empty */
- wait_event_interruptible(ib_conn->wait,
- ib_conn->state == ISER_CONN_DOWN);
+ rc = wait_for_completion_timeout(&ib_conn->flush_completion, 30 * HZ);
+ WARN_ON(rc == 0);
+
+ ib_conn->state = ISER_CONN_DOWN;
mutex_lock(&ib_conn->state_mutex);
ib_conn->state = ISER_CONN_DOWN;
@@ -656,9 +660,7 @@ static void iser_connect_error(struct rdma_cm_id *cma_id)
struct iser_conn *ib_conn;
ib_conn = (struct iser_conn *)cma_id->context;
-
ib_conn->state = ISER_CONN_DOWN;
- wake_up_interruptible(&ib_conn->wait);
}
/**
@@ -761,9 +763,8 @@ static void iser_connected_handler(struct rdma_cm_id *cma_id)
(void)ib_query_qp(cma_id->qp, &attr, ~0, &init_attr);
iser_info("remote qpn:%x my qpn:%x\n", attr.dest_qp_num, cma_id->qp->qp_num);
- ib_conn = (struct iser_conn *)cma_id->context;
- if (iser_conn_state_comp_exch(ib_conn, ISER_CONN_PENDING, ISER_CONN_UP))
- wake_up_interruptible(&ib_conn->wait);
+ ib_conn->state = ISER_CONN_UP;
+ complete(&ib_conn->up_completion);
}
static void iser_disconnected_handler(struct rdma_cm_id *cma_id)
@@ -785,8 +786,7 @@ static void iser_disconnected_handler(struct rdma_cm_id *cma_id)
/* Complete the termination process if no posts are pending */
if (ib_conn->post_recv_buf_count == 0 &&
(atomic_read(&ib_conn->post_send_buf_count) == 0)) {
- ib_conn->state = ISER_CONN_DOWN;
- wake_up_interruptible(&ib_conn->wait);
+ complete(&ib_conn->flush_completion);
}
}
@@ -833,10 +833,11 @@ static int iser_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *eve
void iser_conn_init(struct iser_conn *ib_conn)
{
ib_conn->state = ISER_CONN_INIT;
- init_waitqueue_head(&ib_conn->wait);
ib_conn->post_recv_buf_count = 0;
atomic_set(&ib_conn->post_send_buf_count, 0);
init_completion(&ib_conn->stop_completion);
+ init_completion(&ib_conn->flush_completion);
+ init_completion(&ib_conn->up_completion);
INIT_LIST_HEAD(&ib_conn->conn_list);
spin_lock_init(&ib_conn->lock);
mutex_init(&ib_conn->state_mutex);
@@ -880,8 +881,7 @@ int iser_connect(struct iser_conn *ib_conn,
}
if (!non_blocking) {
- wait_event_interruptible(ib_conn->wait,
- (ib_conn->state != ISER_CONN_PENDING));
+ wait_for_completion_interruptible(&ib_conn->up_completion);
if (ib_conn->state != ISER_CONN_UP) {
err = -EIO;
@@ -1097,8 +1097,7 @@ static void iser_handle_comp_error(struct iser_tx_desc *desc,
/* no more non completed posts to the QP, complete the
* termination process w.o worrying on disconnect event */
- ib_conn->state = ISER_CONN_DOWN;
- wake_up_interruptible(&ib_conn->wait);
+ complete(&ib_conn->flush_completion);
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 06:01:15 +0000