scsi: qla2xxx: Fix stuck session

Session was stuck due to explicit logout to target timing out.  The target
was in an unresponsive state. This timeout induced an error to the GNL
command from moving forward.

Link: https://lore.kernel.org/r/20210329085229.4367-4-njavali@marvell.com
Tested-by: Laurence Oberman <loberman@redhat.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>

drivers/scsi/qla2xxx/qla_init.c

@@ -718,6 +718,7 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t *vha,
 		ql_dbg(ql_dbg_disc, vha, 0x20e0,
 		    "%s %8phC login gen changed\n",
 		    __func__, fcport->port_name);
+		set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
 		return;
 	}
 

drivers/scsi/qla2xxx/qla_target.c

@@ -1029,7 +1029,12 @@ void qlt_free_session_done(struct work_struct *work)
 			}
 			msleep(100);
 			cnt++;
-			if (cnt > 200)
+			/*
+			 * Driver timeout is set to 22 Sec, update count value to loop
+			 * long enough for log-out to complete before advancing. Otherwise,
+			 * straddling logout can interfere with re-login attempt.
+			 */
+			if (cnt > 230)
 				break;
 		}