path: root/net/ipv4/gre_offload.c
diff options
authorTom Herbert <>2014-10-30 08:40:56 -0700
committerDavid S. Miller <>2014-10-30 19:51:56 -0400
commit14051f0452a2c26a3f4791e6ad6a435e8f1945ff (patch)
treeb9b2c17b648ee9f485c9c8751ff1a3d4c781f77a /net/ipv4/gre_offload.c
parent292dd6542f90126826fe87b302e6afa3b7ada6b8 (diff)
gre: Use inner mac length when computing tunnel length
Currently, skb_inner_network_header is used but this does not account for Ethernet header for ETH_P_TEB. Use skb_inner_mac_header which handles TEB and also should work with IP encapsulation in which case inner mac and inner network headers are the same. Tested: Ran TCP_STREAM over GRE, worked as expected. Signed-off-by: Tom Herbert <> Acked-by: Alexander Duyck <> Signed-off-by: David S. Miller <>
Diffstat (limited to 'net/ipv4/gre_offload.c')
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
index f6e345c0bc23..bb5947b0ce2d 100644
--- a/net/ipv4/gre_offload.c
+++ b/net/ipv4/gre_offload.c
@@ -47,7 +47,7 @@ static struct sk_buff *gre_gso_segment(struct sk_buff *skb,
greh = (struct gre_base_hdr *)skb_transport_header(skb);
- ghl = skb_inner_network_header(skb) - skb_transport_header(skb);
+ ghl = skb_inner_mac_header(skb) - skb_transport_header(skb);
if (unlikely(ghl < sizeof(*greh)))
goto out;