From: Bart Van Assche bvanassche@acm.org
commit 76261ada16dcc3be610396a46d35acc3efbda682 upstream.
Since commit 04060db41178 introduces soft lockups when toggling network interfaces, revert it.
Link: https://marc.info/?l=target-devel&m=158157054906196 Cc: Rahul Kundu rahul.kundu@chelsio.com Cc: Mike Marciniszyn mike.marciniszyn@intel.com Cc: Sagi Grimberg sagi@grimberg.me Reported-by: Dakshaja Uppalapati dakshaja@chelsio.com Fixes: 04060db41178 ("scsi: RDMA/isert: Fix a recently introduced regression related to logout") Signed-off-by: Bart Van Assche bvanassche@acm.org Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/infiniband/ulp/isert/ib_isert.c | 12 ++++++++++++ drivers/target/iscsi/iscsi_target.c | 6 +++--- 2 files changed, 15 insertions(+), 3 deletions(-)
--- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -2584,6 +2584,17 @@ isert_wait4logout(struct isert_conn *ise } }
+static void +isert_wait4cmds(struct iscsi_conn *conn) +{ + isert_info("iscsi_conn %p\n", conn); + + if (conn->sess) { + target_sess_cmd_list_set_waiting(conn->sess->se_sess); + target_wait_for_sess_cmds(conn->sess->se_sess); + } +} + /** * isert_put_unsol_pending_cmds() - Drop commands waiting for * unsolicitate dataout @@ -2631,6 +2642,7 @@ static void isert_wait_conn(struct iscsi
ib_drain_qp(isert_conn->qp); isert_put_unsol_pending_cmds(conn); + isert_wait4cmds(conn); isert_wait4logout(isert_conn);
queue_work(isert_release_wq, &isert_conn->release_work); --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -4123,6 +4123,9 @@ int iscsit_close_connection( iscsit_stop_nopin_response_timer(conn); iscsit_stop_nopin_timer(conn);
+ if (conn->conn_transport->iscsit_wait_conn) + conn->conn_transport->iscsit_wait_conn(conn); + /* * During Connection recovery drop unacknowledged out of order * commands for this connection, and prepare the other commands @@ -4208,9 +4211,6 @@ int iscsit_close_connection( target_sess_cmd_list_set_waiting(sess->se_sess); target_wait_for_sess_cmds(sess->se_sess);
- if (conn->conn_transport->iscsit_wait_conn) - conn->conn_transport->iscsit_wait_conn(conn); - ahash_request_free(conn->conn_tx_hash); if (conn->conn_rx_hash) { struct crypto_ahash *tfm;