hsr_get_port_type
ret = hsr_get_port_type(hsr, dsa_to_port(ds, port)->user, &type);
int hsr_get_port_type(struct net_device *hsr_dev, struct net_device *dev,
err = hsr_get_port_type(hsr, dsa_to_port(ds, port)->user, &type);
EXPORT_SYMBOL(hsr_get_port_type);