atw_hdrctl
hh->atw_hdrctl = htole16(ATW_HDRCTL_UNKNOWN1);
hh->atw_hdrctl |= htole16(ATW_HDRCTL_WEP);
hh->atw_hdrctl |= htole16(ATW_HDRCTL_RTSCTS);
sc->sc_dev.dv_xname, hh->atw_hdrctl,