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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 /include
parenta5d56a2217664c7bc06cb7deeac9a2a155ba4345 (diff)
downloadlinux-bcache-d9e507c05ca19ad2ec166577edd8b47e17c8961e.tar.zst
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 'include')
-rw-r--r--include/target/iscsi/iscsi_transport.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/target/iscsi/iscsi_transport.h b/include/target/iscsi/iscsi_transport.h
index 23a87d0cd72c..6db632eb3821 100644
--- a/include/target/iscsi/iscsi_transport.h
+++ b/include/target/iscsi/iscsi_transport.h
@@ -67,6 +67,10 @@ extern int iscsit_logout_post_handler(struct iscsi_cmd *, struct iscsi_conn *);
*/
extern void iscsit_increment_maxcmdsn(struct iscsi_cmd *, struct iscsi_session *);
/*
+ * From iscsi_target_erl0.c
+ */
+extern void iscsit_cause_connection_reinstatement(struct iscsi_conn *, int);
+/*
* From iscsi_target_erl1.c
*/
extern void iscsit_stop_dataout_timer(struct iscsi_cmd *);