[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: Herbert Xu <[EMAIL PROTECTED]>
---
net/bridge/br_input.c | 4 ++++
1 files changed, 4 insertions(+)
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 3a8a015..f8e0a2f 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -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))
-
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