IEEE80211_DUR_DS_FAST_PLCPHDR 3453 dev/ic/atw.c   		    IEEE80211_DUR_DS_FAST_PLCPHDR;
IEEE80211_DUR_DS_FAST_PLCPHDR 2970 dev/ic/rtw.c   		    IEEE80211_DUR_DS_FAST_PLCPHDR;
IEEE80211_DUR_DS_FAST_PLCPHDR  580 net80211/ieee80211.h     (IEEE80211_DUR_DS_SLOW_PLCPHDR - IEEE80211_DUR_DS_FAST_PLCPHDR)