[INET]: Give outer DSCP directly to ip*_copy_dscp

This patch changes the prototype of ipv4_copy_dscp and ipv6_copy_dscp so
that they directly take the outer DSCP rather than the outer IP header.
This will help us to unify the code for inter-family tunnels.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c
index fd84e2217274..9a43ea722481 100644
--- a/net/ipv6/xfrm6_mode_tunnel.c
+++ b/net/ipv6/xfrm6_mode_tunnel.c
@@ -95,7 +95,8 @@ static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
         nh = skb_network_header(skb);
         if (nh[IP6CB(skb)->nhoff] == IPPROTO_IPV6) {
                 if (x->props.flags & XFRM_STATE_DECAP_DSCP)
-                        ipv6_copy_dscp(ipv6_hdr(skb), ipipv6_hdr(skb));
+                        ipv6_copy_dscp(ipv6_get_dsfield(ipv6_hdr(skb)),
+                                       ipipv6_hdr(skb));
                 if (!(x->props.flags & XFRM_STATE_NOECN))
                         ipip6_ecn_decapsulate(skb);
         } else {