From b8cba75bdf6a48ea4811bbefb11a94a5c7281b68 Mon Sep 17 00:00:00 2001 From: Jesse Gross Date: Sat, 19 Mar 2016 09:32:00 -0700 Subject: ipip: Properly mark ipip GRO packets as encapsulated. ipip encapsulated packets can be merged together by GRO but the result does not have the proper GSO type set or even marked as being encapsulated at all. Later retransmission of these packets will likely fail if the device does not support ipip offloads. This is similar to the issue resolved in IPv6 sit in feec0cb3 ("ipv6: gro: support sit protocol"). Reported-by: Patrick Boutilier Fixes: 9667e9bb ("ipip: Add gro callbacks to ipip offload") Tested-by: Patrick Boutilier Acked-by: Eric Dumazet Signed-off-by: Jesse Gross Signed-off-by: David S. Miller --- net/ipv4/af_inet.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'net') diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 0cc923f83e10..965923325535 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1448,6 +1448,13 @@ out_unlock: return err; } +static int ipip_gro_complete(struct sk_buff *skb, int nhoff) +{ + skb->encapsulation = 1; + skb_shinfo(skb)->gso_type |= SKB_GSO_IPIP; + return inet_gro_complete(skb, nhoff); +} + int inet_ctl_sock_create(struct sock **sk, unsigned short family, unsigned short type, unsigned char protocol, struct net *net) @@ -1676,7 +1683,7 @@ static const struct net_offload ipip_offload = { .callbacks = { .gso_segment = inet_gso_segment, .gro_receive = inet_gro_receive, - .gro_complete = inet_gro_complete, + .gro_complete = ipip_gro_complete, }, }; -- cgit v1.2.3