-void ofproto_bundle_register(struct ofproto *, void *aux,
- const struct ofproto_bundle_settings *);
-void ofproto_bundle_unregister(struct ofproto *, void *aux);
+int ofproto_bundle_register(struct ofproto *, void *aux,
+ const struct ofproto_bundle_settings *);
+int ofproto_bundle_unregister(struct ofproto *, void *aux);