This patch updates skb->protocol to ETH_P_IPV6 in ip6_tnl_xmit() when an
IPv6 header is installed to a socket buffer.
This is not a cosmetic change. Without updating this value, GSO packets
transmitted through an ipip6 tunnel have the protocol of ETH_P_IP and
skb_mac_gso_segment() will attempt to call gso_segment() for IPv4,
which results in the packets being dropped.
Fixes: b8921ca83eed ("ip4ip6: Support for GSO/GRO")
Signed-off-by: Eli Cooper <elicoo...@gmx.com>
---
net/ipv6/ip6_tunnel.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 202d16a..03e050d 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1172,6 +1172,7 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device
*dev, __u8 dsfield,
if (err)
return err;
+ skb->protocol = htons(ETH_P_IPV6);
skb_push(skb, sizeof(struct ipv6hdr));
skb_reset_network_header(skb);
ipv6h = ipv6_hdr(skb);
--
2.10.1
