ieee80211_ack_duration
dur = ieee80211_ack_duration(sc->sc_rates, rate,
dur = ieee80211_ack_duration(sc->sc_rates, rate_fb, 0);
dur = ieee80211_ack_duration(ic->ic_rt,
dur = ieee80211_ack_duration(ic->ic_rt,
dur = ieee80211_ack_duration(ic->ic_rt,
dur = ieee80211_ack_duration(ic->ic_rt,
dur = ieee80211_ack_duration(ic->ic_rt, rt2860_rates[ridx].rate,
dur = ieee80211_ack_duration(ic->ic_rt, tp->mgmtrate,
dur = ieee80211_ack_duration(ic->ic_rt, rate,
dur = ieee80211_ack_duration(ic->ic_rt, rt2860_rates[ridx].rate,
dur = ieee80211_ack_duration(ic->ic_rt, tp->mgmtrate,
dur = ieee80211_ack_duration(ic->ic_rt, rate,
+ ieee80211_ack_duration(ic->ic_rt, rate, isshort);
dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort);