sc_cdata16
cdatasize + ETHER_PAD_LEN, (void **) &sc->sc_cdata16,
nullbuf = (uint8_t *)sc->sc_cdata16 + cdatasize;
sc->sc_cdata16, cdatasize, NULL, BUS_DMA_NOWAIT)) != 0) {
bus_dmamem_unmap(sc->sc_dmat, (void *)sc->sc_cdata16, cdatasize);