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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-10-14 09:39:01 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-15 21:26:27 +0200 |
| commit | 7b995651e373d6424f81db23f2ec503306dfd7f0 (patch) | |
| tree | 6d41d29bce9e46d33f2a21d4fd2fa279e6e9730d /net | |
| parent | [NET]: Avoid unnecessary cloning for ingress filtering (diff) | |
| download | linux-7b995651e373d6424f81db23f2ec503306dfd7f0.tar.xz linux-7b995651e373d6424f81db23f2ec503306dfd7f0.zip | |
[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 <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bridge/br_input.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 3a8a015c92e0..f8e0a2fa796e 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)) |