ieee80211_add_wpa
frm = ieee80211_add_wpa(frm, vap);
frm = ieee80211_add_wpa(frm, vap);
frm = ieee80211_add_wpa(frm, vap);
frm = ieee80211_add_wpa(frm, vap);
frm = ieee80211_add_wpa(frm, vap);
uint8_t *ieee80211_add_wpa(uint8_t *, const struct ieee80211vap *);