scsi: qla2xxx: Fix losing FCP-2 targets on long port disable with I/Os

commit 2416ccd3815ba1613e10a6da0a24ef21acfe5633 upstream.

FCP-2 devices were not coming back online once they were lost, login
retries exhausted, and then came back up.  Fix this by accepting RSCN when
the device is not online.

Link: https://lore.kernel.org/r/20220616053508.27186-10-njavali@marvell.com
Fixes: 44c57f205876 ("scsi: qla2xxx: Changes to support FCP2 Target")
Cc: stable@vger.kernel.org
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 6ffae55..b81797a 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -1836,7 +1836,8 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
        case RSCN_PORT_ADDR:
                fcport = qla2x00_find_fcport_by_nportid(vha, &ea->id, 1);
                if (fcport) {
-                       if (fcport->flags & FCF_FCP2_DEVICE) {
+                       if (fcport->flags & FCF_FCP2_DEVICE &&
+                           atomic_read(&fcport->state) == FCS_ONLINE) {
                                ql_dbg(ql_dbg_disc, vha, 0x2115,
                                       "Delaying session delete for FCP2 portid=%06x %8phC ",
                                        fcport->d_id.b24, fcport->port_name);
@@ -1868,7 +1869,8 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
                break;
        case RSCN_AREA_ADDR:
                list_for_each_entry(fcport, &vha->vp_fcports, list) {
-                       if (fcport->flags & FCF_FCP2_DEVICE)
+                       if (fcport->flags & FCF_FCP2_DEVICE &&
+                           atomic_read(&fcport->state) == FCS_ONLINE)
                                continue;
 
                        if ((ea->id.b24 & 0xffff00) == (fcport->d_id.b24 & 0xffff00)) {
@@ -1879,7 +1881,8 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
                break;
        case RSCN_DOM_ADDR:
                list_for_each_entry(fcport, &vha->vp_fcports, list) {
-                       if (fcport->flags & FCF_FCP2_DEVICE)
+                       if (fcport->flags & FCF_FCP2_DEVICE &&
+                           atomic_read(&fcport->state) == FCS_ONLINE)
                                continue;
 
                        if ((ea->id.b24 & 0xff0000) == (fcport->d_id.b24 & 0xff0000)) {
@@ -1891,7 +1894,8 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea)
        case RSCN_FAB_ADDR:
        default:
                list_for_each_entry(fcport, &vha->vp_fcports, list) {
-                       if (fcport->flags & FCF_FCP2_DEVICE)
+                       if (fcport->flags & FCF_FCP2_DEVICE &&
+                           atomic_read(&fcport->state) == FCS_ONLINE)
                                continue;
 
                        fcport->scan_needed = 1;