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authorNicholas Bellinger <nab@linux-iscsi.org>2013-07-03 03:05:37 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-08-04 16:50:33 +0800
commitd9e507c05ca19ad2ec166577edd8b47e17c8961e (patch)
treea3369adbf8ab02bc88eca6549c5ad4bc4a12b21e /drivers/target
parenta5d56a2217664c7bc06cb7deeac9a2a155ba4345 (diff)
downloadlinux-linaro-stable-d9e507c05ca19ad2ec166577edd8b47e17c8961e.tar.gz
iser-target: Fix session reset bug with RDMA_CM_EVENT_DISCONNECTED
commit b2cb96494d83b894a43ba8b9023eead8ff50684b upstream. 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: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/target')
-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 dcb199da06b9..7f1116635d17 100644
--- a/drivers/target/iscsi/iscsi_target_erl0.c
+++ b/drivers/target/iscsi/iscsi_target_erl0.c
@@ -909,6 +909,7 @@ 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)
{