+void proto_attach_interface(struct interface *iface, struct uci_section *s)
+{
+ struct interface_proto_state *state = NULL;
+ struct proto_handler *proto = NULL;
+ const char *proto_name;
+ const char *error = NULL;
+
+ proto_name = uci_lookup_option_string(uci_ctx, s, "proto");
+ if (!proto_name) {
+ error = "NO_PROTO";
+ goto error;
+ }
+
+ if (!strcmp(proto_name, "none")) {
+ state = get_default_proto();
+ state->handler = no_proto_handler;
+ goto out;
+ }
+
+ if (handlers.comp)
+ proto = avl_find_element(&handlers, proto_name, proto, avl);
+
+ if (!proto) {
+ error = "INVALID_PROTO";
+ goto error;
+ }
+
+ state = proto->attach(proto, iface, s);
+
+error:
+ if (error) {
+ interface_add_error(iface, "proto", error, NULL, 0);
+ state = get_default_proto();
+ state->handler = invalid_proto_handler;
+ }
+
+out:
+ interface_set_proto_state(iface, state);
+}
+
+