[NET]: Annotate checksums in on-the-wire packets.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/icmpv6.h b/include/linux/icmpv6.h
index dc79396..68d3526 100644
--- a/include/linux/icmpv6.h
+++ b/include/linux/icmpv6.h
@@ -7,7 +7,7 @@
 
 	__u8		icmp6_type;
 	__u8		icmp6_code;
-	__be16		icmp6_cksum;
+	__sum16		icmp6_cksum;
 
 
 	union {