These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / net / ipv6 / xfrm6_output.c

diff --git a/kernel/net/ipv6/xfrm6_output.c b/kernel/net/ipv6/xfrm6_output.c
index 09c76a7..4d09ce6 100644 (file)
--- a/kernel/net/ipv6/xfrm6_output.c
+++ b/kernel/net/ipv6/xfrm6_output.c
@@ -79,6 +79,7 @@ static int xfrm6_tunnel_check_size(struct sk_buff *skb)
 
        if (!skb->ignore_df && skb->len > mtu) {
                skb->dev = dst->dev;
+               skb->protocol = htons(ETH_P_IPV6);
 
                if (xfrm6_local_dontfrag(skb))
                        xfrm6_local_rxpmtu(skb, mtu);
@@ -131,44 +132,57 @@ int xfrm6_output_finish(struct sock *sk, struct sk_buff *skb)
        return xfrm_output(sk, skb);
 }
 
-static int __xfrm6_output(struct sock *sk, struct sk_buff *skb)
+static int __xfrm6_output_finish(struct net *net, struct sock *sk, struct sk_buff *skb)
+{
+       struct xfrm_state *x = skb_dst(skb)->xfrm;
+
+       return x->outer_mode->afinfo->output_finish(sk, skb);
+}
+
+static int __xfrm6_output(struct net *net, struct sock *sk, struct sk_buff *skb)
 {
        struct dst_entry *dst = skb_dst(skb);
        struct xfrm_state *x = dst->xfrm;
        int mtu;
+       bool toobig;
 
 #ifdef CONFIG_NETFILTER
        if (!x) {
                IP6CB(skb)->flags |= IP6SKB_REROUTED;
-               return dst_output_sk(sk, skb);
+               return dst_output(net, sk, skb);
        }
 #endif
 
+       if (x->props.mode != XFRM_MODE_TUNNEL)
+               goto skip_frag;
+
        if (skb->protocol == htons(ETH_P_IPV6))
                mtu = ip6_skb_dst_mtu(skb);
        else
                mtu = dst_mtu(skb_dst(skb));
 
-       if (skb->len > mtu && xfrm6_local_dontfrag(skb)) {
+       toobig = skb->len > mtu && !skb_is_gso(skb);
+
+       if (toobig && xfrm6_local_dontfrag(skb)) {
                xfrm6_local_rxpmtu(skb, mtu);
                return -EMSGSIZE;
-       } else if (!skb->ignore_df && skb->len > mtu && skb->sk) {
+       } else if (!skb->ignore_df && toobig && skb->sk) {
                xfrm_local_error(skb, mtu);
                return -EMSGSIZE;
        }
 
-       if (x->props.mode == XFRM_MODE_TUNNEL &&
-           ((skb->len > mtu && !skb_is_gso(skb)) ||
-               dst_allfrag(skb_dst(skb)))) {
-               return ip6_fragment(sk, skb,
-                                   x->outer_mode->afinfo->output_finish);
-       }
+       if (toobig || dst_allfrag(skb_dst(skb)))
+               return ip6_fragment(net, sk, skb,
+                                   __xfrm6_output_finish);
+
+skip_frag:
        return x->outer_mode->afinfo->output_finish(sk, skb);
 }
 
-int xfrm6_output(struct sock *sk, struct sk_buff *skb)
+int xfrm6_output(struct net *net, struct sock *sk, struct sk_buff *skb)
 {
-       return NF_HOOK_COND(NFPROTO_IPV6, NF_INET_POST_ROUTING, sk, skb,
-                           NULL, skb_dst(skb)->dev, __xfrm6_output,
+       return NF_HOOK_COND(NFPROTO_IPV6, NF_INET_POST_ROUTING,
+                           net, sk, skb,  NULL, skb_dst(skb)->dev,
+                           __xfrm6_output,
                            !(IP6CB(skb)->flags & IP6SKB_REROUTED));
 }