queue_new
struct netdev_queue *queue_old, *queue_new;
queue_new = htb_offload_get_queue(cl_new);
cl_old->leaf.q->dev_queue = queue_new;
cl_old->leaf.offload_queue = queue_new;
qdisc = dev_graft_qdisc(queue_new, cl_old->leaf.q);
q = queue_new(client, locked);