bf_isaggr
isaggr = bf_isaggr(bf);
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))
isaggr = bf_isaggr(bf);