DC_TX_INTR_ALWAYS
sc->dc_flags |= DC_TX_INTR_ALWAYS|DC_TX_COALESCE |
if (sc->dc_flags & DC_TX_INTR_ALWAYS)
sc->dc_flags |= DC_TX_COALESCE|DC_TX_INTR_ALWAYS;
sc->dc_flags |= DC_TX_STORENFWD|DC_TX_INTR_ALWAYS;
sc->dc_flags |= DC_TX_INTR_ALWAYS;
sc->dc_flags |= DC_TX_INTR_ALWAYS;