struct sk_buff *br_handle_frame(struct net_bridge_port *p, struct sk_buff *skb)
{
const unsigned char *dest = eth_hdr(skb)->h_dest;
+ int (*rhook)(struct sk_buff *skb);
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))
switch (p->state) {
case BR_STATE_FORWARDING:
-
- if (br_should_route_hook) {
- if (br_should_route_hook(&skb))
+ rhook = rcu_dereference(br_should_route_hook);
+ if (rhook != NULL) {
+ if (rhook(skb))
return skb;
dest = eth_hdr(skb)->h_dest;
}