scsi: qla2xxx: Delay loop id allocation at login

Delay loop id allocation to login time
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_init.c

@@ -580,10 +580,6 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t *vha,
 
 	if (!found) {
 		/* fw has no record of this port */
-		if (fcport->loop_id == FC_NO_LOOP_ID) {
-			qla2x00_find_new_loop_id(vha, fcport);
-			fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
-		} else {
 		for (i = 0; i < n; i++) {
 			e = &vha->gnl.l[i];
 			id.b.domain = e->port_id[0];
@@ -596,7 +592,6 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t *vha,
 				conflict_fcport =
 					qla2x00_find_fcport_by_wwpn(vha,
 					    e->port_name, 0);
-
 				ql_dbg(ql_dbg_disc, vha, 0x20e6,
 				    "%s %d %8phC post del sess\n",
 				    __func__, __LINE__,
@@ -605,11 +600,9 @@ static void qla24xx_handle_gnl_done_event(scsi_qla_host_t *vha,
 					(conflict_fcport, 1);
 			}
 
-				if (fcport->loop_id == loop_id) {
 			/* FW already picked this loop id for another fcport */
-					qla2x00_find_new_loop_id(vha, fcport);
-				}
-			}
+			if (fcport->loop_id == loop_id)
+				fcport->loop_id = FC_NO_LOOP_ID;
 		}
 		qla24xx_fcport_handle_login(vha, fcport);
 	}
@@ -1104,6 +1097,7 @@ void qla24xx_handle_gpdb_event(scsi_qla_host_t *vha, struct event_arg *ea)
 static void qla_chk_n2n_b4_login(struct scsi_qla_host *vha, fc_port_t *fcport)
 {
 	u8 login = 0;
+	int rc;
 
 	if (qla_tgt_mode_enabled(vha))
 		return;
@@ -1129,6 +1123,18 @@ static void qla_chk_n2n_b4_login(struct scsi_qla_host *vha, fc_port_t *fcport)
 	}
 
 	if (login) {
+		if (fcport->loop_id == FC_NO_LOOP_ID) {
+			fcport->fw_login_state = DSC_LS_PORT_UNAVAIL;
+			rc = qla2x00_find_new_loop_id(vha, fcport);
+			if (rc) {
+				ql_dbg(ql_dbg_disc, vha, 0x20e6,
+				    "%s %d %8phC post del sess - out of loopid\n",
+				    __func__, __LINE__, fcport->port_name);
+				fcport->scan_state = 0;
+				qlt_schedule_sess_for_deletion(fcport, true);
+				return;
+			}
+		}
 		ql_dbg(ql_dbg_disc, vha, 0x20bf,
 		    "%s %d %8phC post login\n",
 		    __func__, __LINE__, fcport->port_name);