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Diffstat (limited to 'net/bridge/br_vlan.c')
-rw-r--r--net/bridge/br_vlan.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index 4ca4d0a0151c..233ec1c6e9db 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -295,6 +295,25 @@ void br_vlan_flush(struct net_bridge *br)
__vlan_flush(pv);
}
+bool br_vlan_find(struct net_bridge *br, u16 vid)
+{
+ struct net_port_vlans *pv;
+ bool found = false;
+
+ rcu_read_lock();
+ pv = rcu_dereference(br->vlan_info);
+
+ if (!pv)
+ goto out;
+
+ if (test_bit(vid, pv->vlan_bitmap))
+ found = true;
+
+out:
+ rcu_read_unlock();
+ return found;
+}
+
int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
{
if (!rtnl_trylock())