struct net_bridge_port *p = rcu_dereference(skb->dev->br_port);
struct net_bridge *br;
struct net_bridge_fdb_entry *dst;
- int passedup = 0;
+ struct sk_buff *skb2;
if (!p || p->state == BR_STATE_DISABLED)
goto drop;
if (p->state == BR_STATE_LEARNING)
goto drop;
- if (br->dev->flags & IFF_PROMISC) {
- struct sk_buff *skb2;
+ /* The packet skb2 goes to the local host (NULL to skip). */
+ skb2 = NULL;
- skb2 = skb_clone(skb, GFP_ATOMIC);
- if (skb2 != NULL) {
- passedup = 1;
- br_pass_frame_up(br, skb2);
- }
- }
+ if (br->dev->flags & IFF_PROMISC)
+ skb2 = skb;
+
+ dst = NULL;
if (is_multicast_ether_addr(dest)) {
br->statistics.multicast++;
- br_flood_forward(br, skb, !passedup);
- if (!passedup)
- br_pass_frame_up(br, skb);
- goto out;
+ skb2 = skb;
+ } else if ((dst = __br_fdb_get(br, dest)) && dst->is_local) {
+ skb2 = skb;
+ /* Do not forward the packet since it's local. */
+ skb = NULL;
}
- dst = __br_fdb_get(br, dest);
- if (dst != NULL && dst->is_local) {
- if (!passedup)
- br_pass_frame_up(br, skb);
- else
- kfree_skb(skb);
- goto out;
- }
+ if (skb2 == skb)
+ skb2 = skb_clone(skb, GFP_ATOMIC);
- if (dst != NULL) {
- br_forward(dst->dst, skb);
- goto out;
- }
+ if (skb2)
+ br_pass_frame_up(br, skb2);
- br_flood_forward(br, skb, 0);
+ if (skb) {
+ if (dst)
+ br_forward(dst->dst, skb);
+ else
+ br_flood_forward(br, skb);
+ }
out:
return 0;
{
struct net_bridge_port *p = rcu_dereference(skb->dev->br_port);
- if (p && p->state != BR_STATE_DISABLED)
+ if (p)
br_fdb_update(p->br, p, eth_hdr(skb)->h_source);
-
return 0; /* process further */
}
if (!is_valid_ether_addr(eth_hdr(skb)->h_source))
goto drop;
+ skb = skb_share_check(skb, GFP_ATOMIC);
+ if (!skb)
+ return NULL;
+
if (unlikely(is_link_local(dest))) {
/* Pause frames shouldn't be passed up by driver anyway */
if (skb->protocol == htons(ETH_P_PAUSE))
case BR_STATE_FORWARDING:
if (br_should_route_hook) {
- if (br_should_route_hook(&skb))
+ if (br_should_route_hook(skb))
return skb;
dest = eth_hdr(skb)->h_dest;
}