xfrm: Add an IPsec hardware offloading API

[linux-2.6-microblaze.git] / net / ipv6 / xfrm6_output.c

diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c
index 4d09ce6..8ae87d4 100644 (file)
--- a/net/ipv6/xfrm6_output.c
+++ b/net/ipv6/xfrm6_output.c
@@ -73,11 +73,16 @@ static int xfrm6_tunnel_check_size(struct sk_buff *skb)
        int mtu, ret = 0;
        struct dst_entry *dst = skb_dst(skb);
 
+       if (skb->ignore_df)
+               goto out;
+
        mtu = dst_mtu(dst);
        if (mtu < IPV6_MIN_MTU)
                mtu = IPV6_MIN_MTU;
 
-       if (!skb->ignore_df && skb->len > mtu) {
+       if ((!skb_is_gso(skb) && skb->len > mtu) ||
+           (skb_is_gso(skb) &&
+            skb_gso_network_seglen(skb) > ip6_skb_dst_mtu(skb))) {
                skb->dev = dst->dev;
                skb->protocol = htons(ETH_P_IPV6);
 
@@ -89,7 +94,7 @@ static int xfrm6_tunnel_check_size(struct sk_buff *skb)
                        icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
                ret = -EMSGSIZE;
        }
-
+out:
        return ret;
 }