br_vlan_get_tag(skb, &vid);
if (test_bit(vid, pv->untagged_bitmap))
skb = br_vlan_untag(skb);
- else {
- /* Egress policy says "send tagged". If output device
- * is the bridge, we need to add the VLAN header
- * ourselves since we'll be going through the RX path.
- * Sending to ports puts the frame on the TX path and
- * we let dev_hard_start_xmit() add the header.
- */
- if (skb->protocol != htons(ETH_P_8021Q) &&
- pv->port_idx == 0) {
- /* vlan_put_tag expects skb->data to point to
- * mac header.
- */
- skb_push(skb, ETH_HLEN);
- skb = __vlan_put_tag(skb, skb->vlan_proto, skb->vlan_tci);
- if (!skb)
- goto out;
- /* put skb->data back to where it was */
- skb_pull(skb, ETH_HLEN);
- skb->vlan_tci = 0;
- }
- }
out:
return skb;
__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())