diff options
| author | Vlad Yasevich <vyasevic@redhat.com> | 2013-02-13 12:00:11 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-13 19:41:46 -0500 |
| commit | 85f46c6baef1486ce20e13dd7cdea5dd15be2a90 (patch) | |
| tree | aab52d4f01320337bfc59358d26fc856e717a8f2 /net/bridge/br_vlan.c | |
| parent | a37b85c9fbd1dc69fbec3985763f373203eaf9e3 (diff) | |
| download | linux-85f46c6baef1486ce20e13dd7cdea5dd15be2a90.tar.bz2 | |
bridge: Verify that a vlan is allowed to egress on given port
When bridge forwards a frame, make sure that a frame is allowed
to egress on that port.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_vlan.c')
| -rw-r--r-- | net/bridge/br_vlan.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c index 8b4bcd8ff46e..d8690bfe63d4 100644 --- a/net/bridge/br_vlan.c +++ b/net/bridge/br_vlan.c @@ -89,6 +89,26 @@ bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, return false; } +/* Called under RCU. */ +bool br_allowed_egress(struct net_bridge *br, + const struct net_port_vlans *v, + const struct sk_buff *skb) +{ + u16 vid; + + if (!br->vlan_enabled) + return true; + + if (!v) + return false; + + br_vlan_get_tag(skb, &vid); + if (test_bit(vid, v->vlan_bitmap)) + return true; + + return false; +} + /* Must be protected by RTNL */ int br_vlan_add(struct net_bridge *br, u16 vid) { |