i40e_rx_desc_t
i40e_rx_desc_t *rdesc;
i40e_rx_desc_t *rxd_desc_ring; /* Rx desc ring */
i40e_rx_desc_t *cur_desc;
dmasz = sizeof (i40e_rx_desc_t) * rxd->rxd_ring_size;
(i40e_rx_desc_t *)(uintptr_t)rxd->rxd_desc_area.dmab_address;