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| author | Eric Dumazet <edumazet@google.com> | 2014-05-19 21:56:34 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-05-21 17:18:47 -0400 |
| commit | 4de462ab63e23953fd05da511aeb460ae10cc726 (patch) | |
| tree | c69385d148fb52f0f8f659f8261497ab428d820d /net/ipv6/ip6_offload.c | |
| parent | bf63ac73b3e132e6bf0c8798aba7b277c3316e19 (diff) | |
| download | lwn-4de462ab63e23953fd05da511aeb460ae10cc726.tar.gz lwn-4de462ab63e23953fd05da511aeb460ae10cc726.zip | |
ipv6: gro: fix CHECKSUM_COMPLETE support
When GRE support was added in linux-3.14, CHECKSUM_COMPLETE handling
broke on GRE+IPv6 because we did not update/use the appropriate csum :
GRO layer is supposed to use/update NAPI_GRO_CB(skb)->csum instead of
skb->csum
Tested using a GRE tunnel and IPv6 traffic. GRO aggregation now happens
at the first level (ethernet device) instead of being done in gre
tunnel. Native IPv6+TCP is still properly aggregated.
Fixes: bf5a755f5e918 ("net-gre-gro: Add GRE support to the GRO stack")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jerry Chu <hkchu@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_offload.c')
| -rw-r--r-- | net/ipv6/ip6_offload.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c index 59f95affceb0..b2f091566f88 100644 --- a/net/ipv6/ip6_offload.c +++ b/net/ipv6/ip6_offload.c @@ -196,7 +196,6 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head, unsigned int off; u16 flush = 1; int proto; - __wsum csum; off = skb_gro_offset(skb); hlen = off + sizeof(*iph); @@ -264,13 +263,10 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head, NAPI_GRO_CB(skb)->flush |= flush; - csum = skb->csum; - skb_postpull_rcsum(skb, iph, skb_network_header_len(skb)); + skb_gro_postpull_rcsum(skb, iph, nlen); pp = ops->callbacks.gro_receive(head, skb); - skb->csum = csum; - out_unlock: rcu_read_unlock(); |