int set_interface_up(struct interface *iface);
int set_interface_down(struct interface *iface);
int interface_add_link(struct interface *iface, struct device *llif);
void interface_remove_link(struct interface *iface, struct device *llif);
int set_interface_up(struct interface *iface);
int set_interface_down(struct interface *iface);
int interface_add_link(struct interface *iface, struct device *llif);
void interface_remove_link(struct interface *iface, struct device *llif);