1 files changed, 9 insertions, 22 deletions

diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c
index d45ce5d44197..f7d0d6612650 100644
--- a/net/ipv6/xfrm6_mode_tunnel.c
+++ b/net/ipv6/xfrm6_mode_tunnel.c
@@ -25,12 +25,6 @@ static inline void ipip6_ecn_decapsulate(struct sk_buff *skb)
                 IP6_ECN_set_ce(inner_iph);
 }
 
-static inline void ip6ip_ecn_decapsulate(struct sk_buff *skb)
-{
-        if (INET_ECN_is_ce(ipv6_get_dsfield(ipv6_hdr(skb))))
-                        IP_ECN_set_ce(ipip_hdr(skb));
-}
-
 /* Add encapsulation header.
  *
  * The top IP header will be constructed per RFC 2401.
@@ -68,10 +62,8 @@ static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
 {
         int err = -EINVAL;
         const unsigned char *old_mac;
-        const unsigned char *nh = skb_network_header(skb);
 
-        if (nh[IP6CB(skb)->nhoff] != IPPROTO_IPV6 &&
-            nh[IP6CB(skb)->nhoff] != IPPROTO_IPIP)
+        if (XFRM_MODE_SKB_CB(skb)->protocol != IPPROTO_IPV6)
                 goto out;
         if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
                 goto out;
@@ -80,18 +72,12 @@ static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
             (err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
                 goto out;
 
-        nh = skb_network_header(skb);
-        if (nh[IP6CB(skb)->nhoff] == IPPROTO_IPV6) {
-                if (x->props.flags & XFRM_STATE_DECAP_DSCP)
-                        ipv6_copy_dscp(ipv6_get_dsfield(ipv6_hdr(skb)),
-                                       ipipv6_hdr(skb));
-                if (!(x->props.flags & XFRM_STATE_NOECN))
-                        ipip6_ecn_decapsulate(skb);
-        } else {
-                if (!(x->props.flags & XFRM_STATE_NOECN))
-                        ip6ip_ecn_decapsulate(skb);
-                skb->protocol = htons(ETH_P_IP);
-        }
+        if (x->props.flags & XFRM_STATE_DECAP_DSCP)
+                ipv6_copy_dscp(ipv6_get_dsfield(ipv6_hdr(skb)),
+                               ipipv6_hdr(skb));
+        if (!(x->props.flags & XFRM_STATE_NOECN))
+                ipip6_ecn_decapsulate(skb);
+
         old_mac = skb_mac_header(skb);
         skb_set_mac_header(skb, -skb->mac_len);
         memmove(skb_mac_header(skb), old_mac, skb->mac_len);
@@ -103,7 +89,8 @@ out:
 }
 
 static struct xfrm_mode xfrm6_tunnel_mode = {
-        .input = xfrm6_tunnel_input,
+        .input2 = xfrm6_tunnel_input,
+        .input = xfrm_prepare_input,
         .output2 = xfrm6_tunnel_output,
         .output = xfrm6_prepare_output,
         .owner = THIS_MODULE,