bf_al
pktlen = bf_isaggr(bf) ? bf->bf_al : bf->bf_frmlen;
(!bf_isaggr(bf) || (bf_isaggr(bf) && bf->bf_al < 8192))) {
if (bf_isaggr(bf) && (bf->bf_al > ah->ah_caps.rts_aggr_limit))
bf_first->bf_al = al;
ath9k_hw_set11n_aggr_first(sc->sc_ah, bf->bf_desc, bf->bf_al);