DC_TX_COALESCE
sc->dc_flags |= DC_TX_INTR_ALWAYS|DC_TX_COALESCE |
(sc->dc_flags & DC_TX_COALESCE) ? 1 : DC_TX_LIST_CNT - 5,
(sc->dc_flags & DC_TX_COALESCE) ? 1 : DC_TX_LIST_CNT - 5,
sc->dc_flags |= DC_TX_COALESCE|DC_TX_INTR_ALWAYS;
sc->dc_flags |= DC_TX_COALESCE;