RTW_INTR_TX
if ((isr & RTW_INTR_TX) != 0)
rtw_intr_tx(sc, isr & RTW_INTR_TX);
sc->sc_inten = RTW_INTR_RX|RTW_INTR_TX|RTW_INTR_BEACON|RTW_INTR_ATIMINT;