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authorNicholas Bellinger <nab@linux-iscsi.org>2013-07-03 03:05:37 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2013-07-07 18:35:56 -0700
commitb2cb96494d83b894a43ba8b9023eead8ff50684b (patch)
treeb16b85fe4b65448fb8d03c004d8a7d83c988c412 /drivers/target/iscsi
parent186a9647019587b3784694894c4d136fd00cfd7b (diff)
downloadlinux-b2cb96494d83b894a43ba8b9023eead8ff50684b.tar.bz2
iser-target: Fix session reset bug with RDMA_CM_EVENT_DISCONNECTED
This patch addresses a bug where RDMA_CM_EVENT_DISCONNECTED may occur before the connection shutdown has been completed by rx/tx threads, that causes isert_free_conn() to wait indefinately on ->conn_wait. This patch allows isert_disconnect_work code to invoke rdma_disconnect when isert_disconnect_work() process context is started by client session reset before isert_free_conn() code has been reached. It also adds isert_conn->conn_mutex protection for ->state within isert_disconnect_work(), isert_cq_comp_err() and isert_free_conn() code, along with isert_check_state() for wait_event usage. (v2: Add explicit iscsit_cause_connection_reinstatement call during isert_disconnect_work() to force conn reset) Cc: stable@vger.kernel.org # 3.10+ Cc: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/iscsi')
-rw-r--r--drivers/target/iscsi/iscsi_target_erl0.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/target/iscsi/iscsi_target_erl0.c b/drivers/target/iscsi/iscsi_target_erl0.c
index 8f074e0b6099..3722f8dffa68 100644
--- a/drivers/target/iscsi/iscsi_target_erl0.c
+++ b/drivers/target/iscsi/iscsi_target_erl0.c
@@ -908,6 +908,7 @@ void iscsit_cause_connection_reinstatement(struct iscsi_conn *conn, int sleep)
wait_for_completion(&conn->conn_wait_comp);
complete(&conn->conn_post_wait_comp);
}
+EXPORT_SYMBOL(iscsit_cause_connection_reinstatement);
void iscsit_fall_back_to_erl0(struct iscsi_session *sess)
{