MVPP2_NRXDESC
rxq->cons = (rxq->cons + 1) % MVPP2_NRXDESC;
MVPP2_NRXDESC * sizeof(struct mvpp2_rx_desc), 32);
mvpp2_write(sc->sc, MVPP2_RXQ_DESC_SIZE_REG, MVPP2_NRXDESC);
mvpp2_rxq_status_update(sc, rxq->id, 0, MVPP2_NRXDESC);
rxq->cons = (rxq->cons + 1) % MVPP2_NRXDESC;