extern void redistribute_update(const struct prefix *p,
const struct prefix *src_p,
- struct route_entry *re,
- struct route_entry *prev_re);
-extern void redistribute_delete(const struct prefix *p,
- const struct prefix *src_p,
- struct route_entry *re);
+ const struct route_entry *re,
+ const struct route_entry *prev_re);
+/*
+ * During a route delete, where 'new_re' is NULL, redist a delete to all
+ * clients registered for the type of 'old_re'.
+ * During a route update, redist a delete to any clients who will not see
+ * an update when the new route is installed. There are cases when a client
+ * may have seen a redist for 'old_re', but will not see
+ * the redist for 'new_re'.
+ */
+void redistribute_delete(const struct prefix *p, const struct prefix *src_p,
+ const struct route_entry *old_re,
+ const struct route_entry *new_re);
extern void zebra_interface_up_update(struct interface *);
extern void zebra_interface_down_update(struct interface *);