set_bit
set_bit(ch->ch_id, sc->sc_wevents);
set_bit(ch->ch_mindex, &mtg->mt_pending);
set_bit(TXQ_LAST_PKT_DB, &q->flags);
set_bit(TXQ_RUNNING, &q->flags);
set_bit(TXQ_LAST_PKT_DB, &q->flags);