+static inline int ip6ip6_register(void)
+{
+ return xfrm6_tunnel_register(&ip6ip6_handler);
+}
+
+static inline int ip6ip6_unregister(void)
+{
+ return xfrm6_tunnel_deregister(&ip6ip6_handler);
+}
+#else
+static struct inet6_protocol xfrm6_tunnel_protocol = {
+ .handler = ip6ip6_rcv,
+ .err_handler = ip6ip6_err,
+ .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
+};
+
+static inline int ip6ip6_register(void)
+{
+ return inet6_add_protocol(&xfrm6_tunnel_protocol, IPPROTO_IPV6);
+}
+
+static inline int ip6ip6_unregister(void)
+{
+ return inet6_del_protocol(&xfrm6_tunnel_protocol, IPPROTO_IPV6);
+}
+#endif
+