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scsi: qla2xxx: Relogin during fabric disturbance

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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>
This commit is contained in:
Quinn Tran 2021-10-26 04:54:00 -07:00 committed by Martin K. Petersen
parent 2c2934c80e
commit bb2ca6b3f0
1 changed files with 45 additions and 9 deletions
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54
drivers/scsi/qla2xxx/qla_init.c
View file

@ -1786,16 +1786,52 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
fc_port_t *fcport;
unsigned long flags;
fcport = qla2x00_find_fcport_by_nportid(vha, &ea->id, 1);
if (fcport) {
if (fcport->flags & FCF_FCP2_DEVICE) {
ql_dbg(ql_dbg_disc, vha, 0x2115,
"Delaying session delete for FCP2 portid=%06x %8phC ",
fcport->d_id.b24, fcport->port_name);
return;
switch (ea->id.b.rsvd_1) {
case RSCN_PORT_ADDR:
fcport = qla2x00_find_fcport_by_nportid(vha, &ea->id, 1);
if (fcport) {
if (fcport->flags & FCF_FCP2_DEVICE) {
ql_dbg(ql_dbg_disc, vha, 0x2115,
"Delaying session delete for FCP2 portid=%06x %8phC ",
fcport->d_id.b24, fcport->port_name);
return;
}
fcport->scan_needed = 1;
fcport->rscn_gen++;
}
fcport->scan_needed = 1;
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);