athn_txtime
series[i].dur = athn_txtime(sc, IEEE80211_ACK_LEN,
dur += athn_txtime(sc, IEEE80211_ACK_LEN,
dur += athn_txtime(sc, totlen, ridx[0], ic->ic_flags);
dur += athn_txtime(sc, IEEE80211_ACK_LEN,
series[i].dur = athn_txtime(sc, IEEE80211_ACK_LEN,
dur += athn_txtime(sc, IEEE80211_ACK_LEN,
dur += athn_txtime(sc, totlen, ridx[0], ic->ic_flags);
dur += athn_txtime(sc, IEEE80211_ACK_LEN,
int athn_txtime(struct athn_softc *, int, int, u_int);