IEEE80211_DUR_TU 2490 dev/ic/atw.c   	ival = ic->ic_bss->ni_intval * IEEE80211_DUR_TU;
IEEE80211_DUR_TU 2508 dev/ic/atw.c   	    LSHIFT(MASK_AND_RSHIFT(tbtt - TBTTOFS * IEEE80211_DUR_TU,