From ae148b085876fa771d9ef2c05f85d4b4bf09ce0d Mon Sep 17 00:00:00 2001 From: Eli Cooper Date: Wed, 26 Oct 2016 10:11:09 +0800 Subject: [PATCH] ip6_tunnel: Update skb->protocol to ETH_P_IPV6 in ip6_tnl_xmit() 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 Signed-off-by: David S. Miller --- 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 5692d6b8da95..87784560dc46 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -1172,6 +1172,7 @@ route_lookup: 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); -- 2.20.1