Re: [PATCH v3 net-next 03/11] net: switchdev: remove the transaction structure from port object notifiers

+Petr

On Thu, Jan 07, 2021 at 01:17:20AM +0200, Vladimir Oltean wrote:

 static int mlxsw_sp_port_obj_add(struct net_device *dev,
 				 const struct switchdev_obj *obj,
-				 struct switchdev_trans *trans,
 				 struct netlink_ext_ack *extack)
 {
 	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 	const struct switchdev_obj_port_vlan *vlan;
+	struct switchdev_trans trans;
 	int err = 0;
 
 	switch (obj->id) {
 	case SWITCHDEV_OBJ_ID_PORT_VLAN:
 		vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
-		err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, trans,
+

Got the regression results. The call to mlxsw_sp_span_respin() should be
placed here because it needs to be triggered regardless of the return
value of mlxsw_sp_port_vlans_add().

I'm looking into another failure, which might not be related to these
patches. I will also have results with a debug kernel tomorrow (takes
almost a day to complete). Will let you know.

+		trans.ph_prepare = true;
+		err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, &trans,
 					      extack);
+		if (err)
+			break;
 
-		if (switchdev_trans_ph_prepare(trans)) {
-			/* The event is emitted before the changes are actually
-			 * applied to the bridge. Therefore schedule the respin
-			 * call for later, so that the respin logic sees the
-			 * updated bridge state.
-			 */
-			mlxsw_sp_span_respin(mlxsw_sp_port->mlxsw_sp);
-		}
+		/* The event is emitted before the changes are actually
+		 * applied to the bridge. Therefore schedule the respin
+		 * call for later, so that the respin logic sees the
+		 * updated bridge state.
+		 */
+		mlxsw_sp_span_respin(mlxsw_sp_port->mlxsw_sp);
+
+		trans.ph_prepare = false;
+		err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, &trans,
+					      extack);
 		break;
 	case SWITCHDEV_OBJ_ID_PORT_MDB:
 		err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
-					    SWITCHDEV_OBJ_PORT_MDB(obj),
-					    trans);
+					    SWITCHDEV_OBJ_PORT_MDB(obj));
 		break;
 	default:
 		err = -EOPNOTSUPP;