uint16_t nb_rx_hold; /* num held free RX desc */
uint16_t rx_free_thresh; /* max free RX desc to hold */
uint16_t queue_id; /* RX queue index */
uint16_t nb_rx_hold; /* num held free RX desc */
uint16_t rx_free_thresh; /* max free RX desc to hold */
uint16_t queue_id; /* RX queue index */