[SCSI] qla2xxx: Correctly handle 'global port-unavailable' AEN.

Treat a global port-unavailable PORT_UPDATE (8014h) AEN as a
loop-down event.  For this case, within the FCoE domain, the
'logical' interface has been terminated, but the driver will
not receive the classic LOOP_DOWN AEN.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 29 insertions, 1 deletions

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index f966d540d2cd..417a9b9fb19c 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -599,8 +599,36 @@ skip_rio:
 
         case MBA_PORT_UPDATE:           /* Port database update */
                 /* Only handle SCNs for our Vport index. */
-                if (vha->vp_idx && vha->vp_idx != (mb[3] & 0xff))
+                if (mb[1] != 0xffff &&
+                    vha->vp_idx && vha->vp_idx != (mb[3] & 0xff))
+                        break;
+
+                /* Global event -- port logout or port unavailable. */
+                if (mb[1] == 0xffff && mb[2] == 0x7) {
+                        DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
+                            vha->host_no));
+                        DEBUG(printk(KERN_INFO
+                            "scsi(%ld): Port unavailable %04x %04x %04x.\n",
+                            vha->host_no, mb[1], mb[2], mb[3]));
+
+                        if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
+                                atomic_set(&vha->loop_state, LOOP_DOWN);
+                                atomic_set(&vha->loop_down_timer,
+                                    LOOP_DOWN_TIME);
+                                vha->device_flags |= DFLG_NO_CABLE;
+                                qla2x00_mark_all_devices_lost(vha, 1);
+                        }
+
+                        if (vha->vp_idx) {
+                                atomic_set(&vha->vp_state, VP_FAILED);
+                                fc_vport_set_state(vha->fc_vport,
+                                    FC_VPORT_FAILED);
+                        }
+
+                        vha->flags.management_server_logged_in = 0;
+                        ha->link_data_rate = PORT_SPEED_UNKNOWN;
                         break;
+                }
 
                 /*
                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET