X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=net%2Fipv4%2Fnetfilter%2Fip_nat_proto_tcp.c;fp=net%2Fipv4%2Fnetfilter%2Fip_nat_proto_tcp.c;h=35d1d90c968a43b6e15fba1fdff8aa3c856a6f83;hb=4e76c8a9fa413ccc09d3f7f664183dcce3555d57;hp=a3d14079eba6ebe2f835f14c5cf291441f481a8f;hpb=1db395853d4f30d6120458bd279ede1f882a8525;p=linux-2.6.git

diff --git a/net/ipv4/netfilter/ip_nat_proto_tcp.c b/net/ipv4/netfilter/ip_nat_proto_tcp.c
index a3d14079e..35d1d90c9 100644
--- a/net/ipv4/netfilter/ip_nat_proto_tcp.c
+++ b/net/ipv4/netfilter/ip_nat_proto_tcp.c
@@ -129,7 +129,12 @@ tcp_manip_pkt(struct sk_buff **pskb,
 	if (hdrsize < sizeof(*hdr))
 		return 1;
 
-	hdr->check = ip_nat_cheat_check(~oldip, newip,
+#ifdef CONFIG_XEN
+	if ((*pskb)->proto_csum_blank)
+		hdr->check = ip_nat_cheat_check(oldip, ~newip, hdr->check);
+	else
+#endif
+		hdr->check = ip_nat_cheat_check(~oldip, newip,
 					ip_nat_cheat_check(oldport ^ 0xFFFF,
 							   newport,
 							   hdr->check));