Commit 7b995651 authored by Herbert Xu's avatar Herbert Xu Committed by David S. Miller
Browse files

[BRIDGE]: Unshare skb upon entry 



Due to the special location of the bridging hook, it should never see a
shared packet anyway (certainly not with any in-kernel code).  So it
makes sense to unshare the skb there if necessary as that will greatly
simplify the code below it (in particular, netfilter).

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f697c3e8

net/bridge/br_input.c

+4 −0
Original line number Diff line number Diff line
@@ -126,6 +126,10 @@ struct sk_buff *br_handle_frame(struct net_bridge_port *p, 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))