CLDMA_DEDICATED_Q_BUFF_SZ
md_ctrl->tx_ring[CLDMA_Q_IDX_DUMP].pkt_size = CLDMA_DEDICATED_Q_BUFF_SZ;
md_ctrl->rx_ring[CLDMA_Q_IDX_DUMP].pkt_size = CLDMA_DEDICATED_Q_BUFF_SZ;