ldev = netdev_all_lower_get_next(dev, &(iter)))
#define netdev_for_each_all_lower_dev_rcu(dev, ldev, iter) \
ldev = netdev_all_lower_get_next(dev, &(iter)))
#define netdev_for_each_all_lower_dev_rcu(dev, ldev, iter) \
ldev = netdev_all_lower_get_next_rcu(dev, &(iter)); \
ldev; \
ldev = netdev_all_lower_get_next_rcu(dev, &(iter)))
ldev = netdev_all_lower_get_next_rcu(dev, &(iter)); \
ldev; \
ldev = netdev_all_lower_get_next_rcu(dev, &(iter)))