IEEE80211_FC0_SUBTYPE_NODATA
wh->i_fc[0] = IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_NODATA;
subtype != IEEE80211_FC0_SUBTYPE_NODATA &&
if (subtype == IEEE80211_FC0_SUBTYPE_NODATA)
IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_NODATA,