HFLAGS_READ
host_flags = HFLAGS_READ(mac);
if (ofdm_tssi && (HFLAGS_READ(mac) & BWI_HFLAG_PWR_BOOST_DS))
HFLAGS_WRITE((mac), HFLAGS_READ((mac)) | (bits))
HFLAGS_WRITE((mac), HFLAGS_READ((mac)) & ~(bits))