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ipip: Properly mark ipip GRO packets as encapsulated.

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commit b8cba75bdf upstream.

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>
Signed-off-by: Juerg Haefliger <juerg.haefliger@hpe.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jesse Gross
2016-03-19 09:32:00 -07:00
committed by Greg Kroah-Hartman
parent 57c9cfdb61
commit 419cabdcc4
1 changed files with 8 additions and 1 deletions
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9
net/ipv4/af_inet.c
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@@ -1425,6 +1425,13 @@ 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)
@@ -1653,7 +1660,7 @@ 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,
},
};