VIC_INC
VIC_INC(sc->sc_data->vd_tx_nextidx, sc->sc_data->vd_tx_length);
VIC_INC(sc->sc_rxq[q].end, sc->sc_data->vd_rx[q].length);
VIC_INC(sc->sc_data->vd_rx[q].nextidx, sc->sc_nrxbuf);
VIC_INC(sc->sc_data->vd_tx_curidx, sc->sc_data->vd_tx_length);