X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Fipv6%2Fip6_tunnel.c;h=df30976f6dfd196c7f40511356131c1f9a11c09a;hb=3f5f4346b6d3c8bc33780a941da2473c4be2c989;hp=a0902fbdb4e1ebfa71ee3f4f4d349b0735e923e2;hpb=5f757f91e70a97eda8f0cc13bddc853209b2d173;p=linux-2.6

diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index a0902fbdb4..df30976f6d 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -883,8 +883,8 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
 	 */
 	max_headroom += LL_RESERVED_SPACE(tdev);
 
-	if (skb_headroom(skb) < max_headroom ||
-	    skb_cloned(skb) || skb_shared(skb)) {
+	if (skb_headroom(skb) < max_headroom || skb_shared(skb) ||
+	    (skb_cloned(skb) && !skb_clone_writable(skb, 0))) {
 		struct sk_buff *new_skb;
 
 		if (!(new_skb = skb_realloc_headroom(skb, max_headroom)))
@@ -962,8 +962,8 @@ ip4ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
 	dsfield = ipv4_get_dsfield(iph);
 
 	if ((t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS))
-		fl.fl6_flowlabel |= ntohl(((__u32)iph->tos << IPV6_TCLASS_SHIFT)
-					  & IPV6_TCLASS_MASK);
+		fl.fl6_flowlabel |= htonl((__u32)iph->tos << IPV6_TCLASS_SHIFT)
+					  & IPV6_TCLASS_MASK;
 
 	err = ip6_tnl_xmit2(skb, dev, dsfield, &fl, encap_limit, &mtu);
 	if (err != 0) {