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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: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2016-02-26 13:16:00 -05:00 committed by David S. Miller
parent 7f66ee4156
commit fb2dabad69
2 changed files with 23 additions and 0 deletions
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2
include/net/dsa.h
View File

@ -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);

21
net/dsa/slave.c
View File

@ -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;