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qla2xxx: Fix login timeout

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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-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

See also upstream commit abb31aeaa9b20680b0620b23fea5475ea4591e31.


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9131 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2020-08-29 15:41:31 +00:00
parent 73a1b8cddf
commit 124ee51ee9
2 changed files with 16 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
qla2x00t-32gbit/qla_gs.c
View File

@@ -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;

2
qla2x00t-32gbit/qla_target.c
View File

@@ -1285,7 +1285,7 @@ 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);