extern const struct uci_blob_param_list device_attr_list;
extern struct device_type simple_device_type;
-extern struct device_type bridge_device_type;
extern struct device_type tunnel_device_type;
-extern struct device_type macvlan_device_type;
-extern struct device_type vlandev_device_type;
void device_lock(void);
void device_unlock(void);