TX_QUEUE
err = qmgr_request_queue(TX_QUEUE(port->id), TX_DESCS, 0, 0,
qmgr_release_queue(TX_QUEUE(port->id));
qmgr_release_queue(TX_QUEUE(port->id));
if (qmgr_stat_empty(TX_QUEUE(port->id))) {
queue_put_desc(TX_QUEUE(port->id), phys, desc);
while (queue_get_desc(TX_QUEUE(port->id), port, 1) >= 0)
queue_put_desc(TX_QUEUE(port->id), tx_desc_phys(port, n), desc);