diff options
| author | Vlad Yasevich <vyasevic@redhat.com> | 2013-02-13 12:00:20 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-13 19:42:16 -0500 |
| commit | 35e03f3a0275a1ba57e432d7c948cf6f70fbb37a (patch) | |
| tree | 7a86834908791e180aaf4284cd462bb7e8a1d926 /net/bridge | |
| parent | bc9a25d21ef8bad30e259af5114ccfb845c066db (diff) | |
| download | linux-35e03f3a0275a1ba57e432d7c948cf6f70fbb37a.tar.bz2 | |
bridge: Separate egress policy bitmap
Add an ability to configure a separate "untagged" egress
policy to the VLAN information of the bridge. This superseeds PVID
policy and makes PVID ingress-only. The policy is configured with a
new flag and is represented as a port bitmap per vlan. Egress frames
with a VLAN id in "untagged" policy bitmap would egress
the port without VLAN header.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
| -rw-r--r-- | net/bridge/br_netlink.c | 4 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 1 | ||||
| -rw-r--r-- | net/bridge/br_vlan.c | 20 |
3 files changed, 19 insertions, 6 deletions
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index e044cc0b5650..d1dda476d743 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -143,6 +143,10 @@ static int br_fill_ifinfo(struct sk_buff *skb, vinfo.flags = 0; if (vid == pvid) vinfo.flags |= BRIDGE_VLAN_INFO_PVID; + + if (test_bit(vid, pv->untagged_bitmap)) + vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; + if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, sizeof(vinfo), &vinfo)) goto nla_put_failure; diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 32ecfa4ef47f..6d314c4e6bcb 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -75,6 +75,7 @@ struct net_port_vlans { } parent; struct rcu_head rcu; unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN]; + unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN]; u16 num_vlans; }; diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c index 9ea358fbbf78..93dde75923f0 100644 --- a/net/bridge/br_vlan.c +++ b/net/bridge/br_vlan.c @@ -23,6 +23,15 @@ static void __vlan_delete_pvid(struct net_port_vlans *v, u16 vid) v->pvid = 0; } +static void __vlan_add_flags(struct net_port_vlans *v, u16 vid, u16 flags) +{ + if (flags & BRIDGE_VLAN_INFO_PVID) + __vlan_add_pvid(v, vid); + + if (flags & BRIDGE_VLAN_INFO_UNTAGGED) + set_bit(vid, v->untagged_bitmap); +} + static int __vlan_add(struct net_port_vlans *v, u16 vid, u16 flags) { struct net_bridge_port *p = NULL; @@ -31,8 +40,7 @@ static int __vlan_add(struct net_port_vlans *v, u16 vid, u16 flags) int err; if (test_bit(vid, v->vlan_bitmap)) { - if (flags & BRIDGE_VLAN_INFO_PVID) - __vlan_add_pvid(v, vid); + __vlan_add_flags(v, vid, flags); return 0; } @@ -69,8 +77,7 @@ static int __vlan_add(struct net_port_vlans *v, u16 vid, u16 flags) set_bit(vid, v->vlan_bitmap); v->num_vlans++; - if (flags & BRIDGE_VLAN_INFO_PVID) - __vlan_add_pvid(v, vid); + __vlan_add_flags(v, vid, flags); return 0; @@ -86,6 +93,7 @@ static int __vlan_del(struct net_port_vlans *v, u16 vid) return -EINVAL; __vlan_delete_pvid(v, vid); + clear_bit(vid, v->untagged_bitmap); if (v->port_idx && vid) { struct net_device *dev = v->parent.port->dev; @@ -144,11 +152,11 @@ struct sk_buff *br_handle_vlan(struct net_bridge *br, goto out; /* At this point, we know that the frame was filtered and contains - * a valid vlan id. If the vlan id matches the pvid of current port + * a valid vlan id. If the vlan id is set in the untagged bitmap, * send untagged; otherwise, send taged. */ br_vlan_get_tag(skb, &vid); - if (vid == br_get_pvid(pv)) + if (test_bit(vid, pv->untagged_bitmap)) skb = br_vlan_untag(skb); else { /* Egress policy says "send tagged". If output device |