ieee80211_amrr_choose
ieee80211_amrr_choose(&sc->sc_amrr, &in->in_ni, &in->in_amn);
ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn);
void ieee80211_amrr_choose(struct ieee80211_amrr *, struct ieee80211_node *,