sit: Set inner IP protocol in sit

Call skb_set_inner_ipproto to set inner IP protocol to IPPROTO_IPV6
before tunnel_xmit. This is needed if UDP encapsulation (fou) is
being done.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index db75809ab843..0d4e27466f82 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -982,6 +982,8 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
                 goto tx_error;
         }
 
+        skb_set_inner_ipproto(skb, IPPROTO_IPV6);
+
         err = iptunnel_xmit(skb->sk, rt, skb, fl4.saddr, fl4.daddr,
                             protocol, tos, ttl, df,
                             !net_eq(tunnel->net, dev_net(dev)));
@@ -1006,6 +1008,8 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
         if (IS_ERR(skb))
                 goto out;
 
+        skb_set_inner_ipproto(skb, IPPROTO_IPIP);
+
         ip_tunnel_xmit(skb, dev, tiph, IPPROTO_IPIP);
         return NETDEV_TX_OK;
 out: