From: Quinn Tran <qut...@marvell.com> [ Upstream commit abb31aeaa9b20680b0620b23fea5475ea4591e31 ]
Multipath errors were seen during failback due to login timeout. The remote device sent LOGO, the local host tore down the session and did relogin. The RSCN arrived indicates remote device is going through failover after which the relogin is in a 20s timeout phase. At this point the driver is stuck in the relogin process. Add a fix to delete the session as part of abort/flush the login. Link: https://lore.kernel.org/r/20200806111014.28434-5-njav...@marvell.com Reviewed-by: Himanshu Madhani <himanshu.madh...@oracle.com> Signed-off-by: Quinn Tran <qut...@marvell.com> Signed-off-by: Nilesh Javali <njav...@marvell.com> Signed-off-by: Martin K. Petersen <martin.peter...@oracle.com> Signed-off-by: Sasha Levin <sas...@kernel.org> --- drivers/scsi/qla2xxx/qla_gs.c | 18 +++++++++++++++--- drivers/scsi/qla2xxx/qla_target.c | 2 +- 2 files changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c index 3bfb5678f6515..de9fd7f688d01 100644 --- a/drivers/scsi/qla2xxx/qla_gs.c +++ b/drivers/scsi/qla2xxx/qla_gs.c @@ -3538,10 +3538,22 @@ login_logout: } if (fcport->scan_state != QLA_FCPORT_FOUND) { + bool do_delete = false; + + if (fcport->scan_needed && + fcport->disc_state == DSC_LOGIN_PEND) { + /* Cable got disconnected after we sent + * a login. Do delete to prevent timeout. + */ + fcport->logout_on_delete = 1; + do_delete = true; + } + fcport->scan_needed = 0; - if ((qla_dual_mode_enabled(vha) || - qla_ini_mode_enabled(vha)) && - atomic_read(&fcport->state) == FCS_ONLINE) { + if (((qla_dual_mode_enabled(vha) || + qla_ini_mode_enabled(vha)) && + atomic_read(&fcport->state) == FCS_ONLINE) || + do_delete) { if (fcport->loop_id != FC_NO_LOOP_ID) { if (fcport->flags & FCF_FCP2_DEVICE) fcport->logout_on_delete = 0; diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index fbb80a043b4fe..90289162dbd4c 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -1270,7 +1270,7 @@ void qlt_schedule_sess_for_deletion(struct fc_port *sess) qla24xx_chk_fcp_state(sess); - ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, + ql_dbg(ql_dbg_disc, sess->vha, 0xe001, "Scheduling sess %p for deletion %8phC\n", sess, sess->port_name); -- 2.25.1
