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| author | Ajit Khaparde <ajitkhaparde@gmail.com> | 2010-02-16 20:25:43 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-23 19:09:31 -0800 |
| commit | c4d49794ff2838038fd9756eae39c39a5a685833 (patch) | |
| tree | 0511704f9660c27e1bd704d45d3f45457b851c64 | |
| parent | 675c60706cd197219c6e3e6e3f195475d842344e (diff) | |
| download | lwn-c4d49794ff2838038fd9756eae39c39a5a685833.tar.gz lwn-c4d49794ff2838038fd9756eae39c39a5a685833.zip | |
net: bug fix for vlan + gro issue
Traffic (tcp) doesnot start on a vlan interface when gro is enabled.
Even the tcp handshake was not taking place.
This is because, the eth_type_trans call before the netif_receive_skb
in napi_gro_finish() resets the skb->dev to napi->dev from the previously
set vlan netdev interface. This causes the ip_route_input to drop the
incoming packet considering it as a packet coming from a martian source.
I could repro this on 2.6.32.7 (stable) and 2.6.33-rc7.
With this fix, the traffic starts and the test runs fine on both vlan
and non-vlan interfaces.
CC: Herbert Xu <herbert@gondor.apana.org.au>
CC: Patrick McHardy <kaber@trash.net>
Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
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 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index be9924f60ec3..ec874218b206 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2761,7 +2761,7 @@ gro_result_t napi_frags_finish(struct napi_struct *napi, struct sk_buff *skb, switch (ret) { case GRO_NORMAL: case GRO_HELD: - skb->protocol = eth_type_trans(skb, napi->dev); + skb->protocol = eth_type_trans(skb, skb->dev); if (ret == GRO_HELD) skb_gro_pull(skb, -ETH_HLEN); |