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authorHerbert Xu <herbert@gondor.apana.org.au>2011-01-29 20:44:54 -0800
committerDavid S. Miller <davem@davemloft.net>2011-01-29 22:36:24 -0800
commit66c46d741e2e60f0e8b625b80edb0ab820c46d7a (patch)
tree999a13b5384d57e9548798b36c4316b271fdeae6 /net
parent8f2771f2b85aea4d0f9a0137ad3b63d1173c0962 (diff)
gro: Reset dev pointer on reuse
On older kernels the VLAN code may zero skb->dev before dropping it and causing it to be reused by GRO. Unfortunately we didn't reset skb->dev in that case which causes the next GRO user to get a bogus skb->dev pointer. This particular problem no longer happens with the current upstream kernel due to changes in VLAN processing. However, for correctness we should still reset the skb->dev pointer in the GRO reuse function in case a future user does the same thing. 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/core/dev.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 24ea2d71e7e..93e44dbf679 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3424,6 +3424,7 @@ static void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb)
__skb_pull(skb, skb_headlen(skb));
skb_reserve(skb, NET_IP_ALIGN - skb_headroom(skb));
skb->vlan_tci = 0;
+ skb->dev = napi->dev;
napi->skb = skb;
}