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authorJesse Gross <jesse@kernel.org>2016-03-19 09:32:00 -0700
committerDavid S. Miller <davem@davemloft.net>2016-03-20 16:33:39 -0400
commitb8cba75bdf6a48ea4811bbefb11a94a5c7281b68 (patch)
treec97ea432d8acb82dd3261daea142aee6ef076bd0
parent659e0bcaebc4ca36e64eac6e9f39c1904b17472c (diff)
downloadlinux-b8cba75bdf6a48ea4811bbefb11a94a5c7281b68.tar.bz2
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 <boutilpj@ednet.ns.ca> Fixes: 9667e9bb ("ipip: Add gro callbacks to ipip offload") Tested-by: Patrick Boutilier <boutilpj@ednet.ns.ca> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jesse Gross <jesse@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv4/af_inet.c9
1 files changed, 8 insertions, 1 deletions
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,
},
};