From: Nilesh Javali njavali@marvell.com
[ Upstream commit 4118879be3755b38171063dfd4a57611d4b20a83 ]
For short time cable pulls, the in-flight I/O to the firmware is never cleaned up, resulting in the behaviour of stale I/O completion causing list_del corruption and soft lockup of the system.
On link down event, mark all the connections for recovery, causing cleanup of all the in-flight I/O immediately.
Link: https://lore.kernel.org/r/20200908095657.26821-7-mrangankar@marvell.com Signed-off-by: Nilesh Javali njavali@marvell.com Signed-off-by: Manish Rangankar mrangankar@marvell.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/qedi/qedi_main.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c index 6f038ae5efcaf..dfe24b505b402 100644 --- a/drivers/scsi/qedi/qedi_main.c +++ b/drivers/scsi/qedi/qedi_main.c @@ -1127,6 +1127,15 @@ static void qedi_schedule_recovery_handler(void *dev) schedule_delayed_work(&qedi->recovery_work, 0); }
+static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session) +{ + struct iscsi_session *session = cls_session->dd_data; + struct iscsi_conn *conn = session->leadconn; + struct qedi_conn *qedi_conn = conn->dd_data; + + qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); +} + static void qedi_link_update(void *dev, struct qed_link_output *link) { struct qedi_ctx *qedi = (struct qedi_ctx *)dev; @@ -1138,6 +1147,7 @@ static void qedi_link_update(void *dev, struct qed_link_output *link) QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Down event.\n"); atomic_set(&qedi->link_state, QEDI_LINK_DOWN); + iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery); } }