-extern avl_tree_t *new_subnet_tree(void);
-extern void free_subnet_tree(avl_tree_t *);
-extern void subnet_add(struct node_t *, subnet_t *);
-extern void subnet_del(struct node_t *, subnet_t *);
-extern char *net2str(subnet_t *);
-extern subnet_t *str2net(char *);
-extern subnet_t *lookup_subnet(struct node_t *, subnet_t *);
-extern subnet_t *lookup_subnet_mac(mac_t *);
-extern subnet_t *lookup_subnet_ip(struct addrinfo *);
-extern void dump_subnets(void);
-
-#endif /* __TINC_SUBNET_H__ */
+extern splay_tree_t *new_subnet_tree(void) __attribute__((__malloc__));
+extern void free_subnet_tree(splay_tree_t *);
+extern void subnet_add(struct node_t *owner, subnet_t *subnet);
+extern void subnet_del(struct node_t *owner, subnet_t *subnet);
+extern void subnet_update(struct node_t *owner, subnet_t *subnet, bool up);
+extern int maskcmp(const void *a, const void *b, int masklen);
+extern void maskcpy(void *dest, const void *src, int masklen, int len);
+extern void mask(void *mask, int masklen, int len);
+extern bool maskcheck(const void *mask, int masklen, int len);
+extern bool net2str(char *netstr, int len, const subnet_t *subnet);
+extern bool str2net(subnet_t *subnet, const char *netstr);
+extern subnet_t *lookup_subnet(const struct node_t *owner, const subnet_t *subnet);
+extern subnet_t *lookup_subnet_mac(const struct node_t *owner, const mac_t *address);
+extern subnet_t *lookup_subnet_ipv4(const ipv4_t *address);
+extern subnet_t *lookup_subnet_ipv6(const ipv6_t *address);
+extern bool dump_subnets(struct connection_t *c);
+extern void subnet_cache_flush(void);
+
+#endif