[IPV4]: encapsulation annotations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/if_tunnel.h b/include/linux/if_tunnel.h
index bef9f8f..8de079b 100644
--- a/include/linux/if_tunnel.h
+++ b/include/linux/if_tunnel.h
@@ -19,10 +19,10 @@
 {
 	char			name[IFNAMSIZ];
 	int			link;
-	__u16			i_flags;
-	__u16			o_flags;
-	__u32			i_key;
-	__u32			o_key;
+	__be16			i_flags;
+	__be16			o_flags;
+	__be32			i_key;
+	__be32			o_key;
 	struct iphdr		iph;
 };