AR9003_NTXSTATUS
sc->txscur = (sc->txscur + 1) % AR9003_NTXSTATUS;
size = AR9003_NTXSTATUS * sizeof(struct ar_tx_status);
AR9003_NTXSTATUS * sizeof(struct ar_tx_status));
memset(sc->txsring, 0, AR9003_NTXSTATUS * sizeof(struct ar_tx_status));