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net: bridge: Notify about bridge VLANs

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A driver might need to react to changes in settings of brentry VLANs.
Therefore send switchdev port notifications for these as well. Reuse
SWITCHDEV_OBJ_ID_PORT_VLAN for this purpose. Listeners should use
netif_is_bridge_master() on orig_dev to determine whether the
notification is about a bridge port or a bridge.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata 2018-05-30 03:00:45 +02:00 committed by David S. Miller
parent a73bceb86d
commit 9c86ce2c1a
1 changed files with 25 additions and 3 deletions
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28
net/bridge/br_vlan.c
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@ -246,6 +246,10 @@ static int __vlan_add(struct net_bridge_vlan *v, u16 flags)
goto out_filt;
v->brvlan = masterv;
v->stats = masterv->stats;
} else {
err = br_switchdev_port_vlan_add(dev, v->vid, flags);
if (err && err != -EOPNOTSUPP)
goto out;
}
/* Add the dev mac and count the vlan only if it's usable */
@ -281,6 +285,8 @@ static int __vlan_add(struct net_bridge_vlan *v, u16 flags)
br_vlan_put_master(masterv);
v->brvlan = NULL;
}
} else {
br_switchdev_port_vlan_del(dev, v->vid);
}
goto out;
@ -306,6 +312,11 @@ static int __vlan_del(struct net_bridge_vlan *v)
err = __vlan_vid_del(p->dev, p->br, v->vid);
if (err)
goto out;
} else {
err = br_switchdev_port_vlan_del(v->br->dev, v->vid);
if (err && err != -EOPNOTSUPP)
goto out;
err = 0;
}
if (br_vlan_should_use(v)) {
@ -558,16 +569,22 @@ static int br_vlan_add_existing(struct net_bridge *br,
{
int err;
err = br_switchdev_port_vlan_add(br->dev, vlan->vid, flags);
if (err && err != -EOPNOTSUPP)
return err;
if (!br_vlan_is_brentry(vlan)) {
/* Trying to change flags of non-existent bridge vlan */
if (!(flags & BRIDGE_VLAN_INFO_BRENTRY))
return -EINVAL;
if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) {
err = -EINVAL;
goto err_flags;
}
/* It was only kept for port vlans, now make it real */
err = br_fdb_insert(br, NULL, br->dev->dev_addr,
vlan->vid);
if (err) {
br_err(br, "failed to insert local address into bridge forwarding table\n");
return err;
goto err_fdb_insert;
}
refcount_inc(&vlan->refcnt);
@ -580,6 +597,11 @@ static int br_vlan_add_existing(struct net_bridge *br,
*changed = true;
return 0;
err_fdb_insert:
err_flags:
br_switchdev_port_vlan_del(br->dev, vlan->vid);
return err;
}
/* Must be protected by RTNL.