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scsi: qla2xxx: Relogin during fabric disturbance

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[ Upstream commit bb2ca6b3f09ac20e8357d257d0557ab5ddf6adcd ]

For RSCN of type "Area, Domain, or Fabric", which indicate a portion or
entire fabric was disturbed, current driver does not set the scan_need flag
to indicate a session was affected by the disturbance. This in turn can
lead to I/O timeout and delay of relogin. Hence initiate relogin in the
event of fabric disturbance.

Link: https://lore.kernel.org/r/20211026115412.27691-2-njavali@marvell.com
Fixes: 1560bafdff ("scsi: qla2xxx: Use complete switch scan for RSCN events")
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Quinn Tran
2021-10-26 04:54:00 -07:00
committed by Greg Kroah-Hartman
parent bc3f207ed9
commit cbe31149e5
1 changed files with 45 additions and 9 deletions
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36
drivers/scsi/qla2xxx/qla_init.c
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@@ -1708,6 +1708,8 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
fc_port_t *fcport; fc_port_t *fcport;
unsigned long flags; unsigned long flags;
switch (ea->id.b.rsvd_1) {
case RSCN_PORT_ADDR:
fcport = qla2x00_find_fcport_by_nportid(vha, &ea->id, 1); fcport = qla2x00_find_fcport_by_nportid(vha, &ea->id, 1);
if (fcport) { if (fcport) {
if (fcport->flags & FCF_FCP2_DEVICE) { if (fcport->flags & FCF_FCP2_DEVICE) {
@@ -1719,6 +1721,40 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
fcport->scan_needed = 1; fcport->scan_needed = 1;
fcport->rscn_gen++; fcport->rscn_gen++;
} }
break;
case RSCN_AREA_ADDR:
list_for_each_entry(fcport, &vha->vp_fcports, list) {
if (fcport->flags & FCF_FCP2_DEVICE)
continue;
if ((ea->id.b24 & 0xffff00) == (fcport->d_id.b24 & 0xffff00)) {
fcport->scan_needed = 1;
fcport->rscn_gen++;
}
}
break;
case RSCN_DOM_ADDR:
list_for_each_entry(fcport, &vha->vp_fcports, list) {
if (fcport->flags & FCF_FCP2_DEVICE)
continue;
if ((ea->id.b24 & 0xff0000) == (fcport->d_id.b24 & 0xff0000)) {
fcport->scan_needed = 1;
fcport->rscn_gen++;
}
}
break;
case RSCN_FAB_ADDR:
default:
list_for_each_entry(fcport, &vha->vp_fcports, list) {
if (fcport->flags & FCF_FCP2_DEVICE)
continue;
fcport->scan_needed = 1;
fcport->rscn_gen++;
}
break;
}
spin_lock_irqsave(&vha->work_lock, flags); spin_lock_irqsave(&vha->work_lock, flags);
if (vha->scan.scan_flags == 0) { if (vha->scan.scan_flags == 0) {