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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2011-01-29 20:44:54 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-01-29 22:36:24 -0800 |
| commit | 66c46d741e2e60f0e8b625b80edb0ab820c46d7a (patch) | |
| tree | 999a13b5384d57e9548798b36c4316b271fdeae6 | |
| parent | 8f2771f2b85aea4d0f9a0137ad3b63d1173c0962 (diff) | |
| download | linux-3.10-66c46d741e2e60f0e8b625b80edb0ab820c46d7a.tar.gz linux-3.10-66c46d741e2e60f0e8b625b80edb0ab820c46d7a.tar.bz2 linux-3.10-66c46d741e2e60f0e8b625b80edb0ab820c46d7a.zip | |
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>
| -rw-r--r-- | net/core/dev.c | 1 |
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; } |