Added missing structure declarations.

TODO

@@ -20,7 +20,6 @@ Core
 
 - netlink: import Linux route attributes to our rta's, so that they can be filtered?
 
-- iface: interface filters should support filtering by IP address as well
 - iface: SIOCGIFINDEX exists on glibc systems, but it doesn't work on 2.0.x kernels!
 
 - socket: Use IP_RECVERR for BGP TCP sockets?

filter/filter.h

@@ -56,6 +56,9 @@ struct f_tree *f_new_tree(void);
 struct f_tree *build_tree(struct f_tree *);
 struct f_tree *find_tree(struct f_tree *t, struct f_val val);
 
+struct ea_list;
+struct rte;
+
 int f_run(struct filter *filter, struct rte **rte, struct ea_list **tmp_attrs, struct linpool *tmp_pool);
 char *filter_name(struct filter *filter);