IEEE80211_DUR_DS_SLOW_ACK 3485 dev/ic/atw.c   	ack = (use_ack) ? pre + (IEEE80211_DUR_DS_SLOW_ACK * 2) / ctsrate : 0;
IEEE80211_DUR_DS_SLOW_ACK 3002 dev/ic/rtw.c   	ack = (use_ack) ? pre + (IEEE80211_DUR_DS_SLOW_ACK * 2) / ctsrate : 0;
IEEE80211_DUR_DS_SLOW_ACK  591 net80211/ieee80211.h 				 IEEE80211_DUR_DS_SLOW_ACK + \