ena_rx_ctrl_block_t
ena_rx_ctrl_block_t *er_rcbs; /* RM */
ena_rx_ctrl_block_t *rcb = &rxq->er_rcbs[i];
ena_rx_ctrl_block_t *rcb = &rxq->er_rcbs[tail_mod];
ena_rx_ctrl_block_t *rcb;
ena_rx_ctrl_block_t *rcb = &rxq->er_rcbs[i];