Commit fb2dabad authored by Vivien Didelot's avatar Vivien Didelot Committed by David S. Miller
Browse files

net: dsa: support VLAN filtering switchdev attr 



When a user explicitly requests VLAN filtering with something like:

    # echo 1 > /sys/class/net/<bridge>/bridge/vlan_filtering

Switchdev propagates a SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING port
attribute.

Add support for it in the DSA layer with a new port_vlan_filtering
function to let drivers toggle 802.1Q filtering on user demand.

Signed-off-by: default avatarVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7f66ee41

include/net/dsa.h

+2 −0
Original line number Diff line number Diff line
@@ -305,6 +305,8 @@ struct dsa_switch_driver { 
	/*

	 * VLAN support

	 */

	int	(*port_vlan_filtering)(struct dsa_switch *ds, int port,

				       bool vlan_filtering);

	int	(*port_vlan_prepare)(struct dsa_switch *ds, int port,

				     const struct switchdev_obj_port_vlan *vlan,

				     struct switchdev_trans *trans);

net/dsa/slave.c

+21 −0
Original line number Diff line number Diff line
@@ -317,6 +317,24 @@ static int dsa_slave_stp_update(struct net_device *dev, u8 state) 
	return ret;

}



static int dsa_slave_vlan_filtering(struct net_device *dev,

				    const struct switchdev_attr *attr,

				    struct switchdev_trans *trans)

{

	struct dsa_slave_priv *p = netdev_priv(dev);

	struct dsa_switch *ds = p->parent;



	/* bridge skips -EOPNOTSUPP, so skip the prepare phase */

	if (switchdev_trans_ph_prepare(trans))

		return 0;



	if (ds->drv->port_vlan_filtering)

		return ds->drv->port_vlan_filtering(ds, p->port,

						    attr->u.vlan_filtering);



	return 0;

}



static int dsa_slave_port_attr_set(struct net_device *dev,

				   const struct switchdev_attr *attr,

				   struct switchdev_trans *trans)
@@ -333,6 +351,9 @@ static int dsa_slave_port_attr_set(struct net_device *dev, 
			ret = ds->drv->port_stp_update(ds, p->port,

						       attr->u.stp_state);

		break;

	case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:

		ret = dsa_slave_vlan_filtering(dev, attr, trans);

		break;

	default:

		ret = -EOPNOTSUPP;

		break;

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