ac_aifsn          855 net80211/ieee80211_input.c 		ac->ac_aifsn     = frm[0] & 0xf;
ac_aifsn          757 net80211/ieee80211_output.c 			 (ac->ac_aifsn & 0xf);
ac_aifsn          139 net80211/ieee80211_var.h 	u_int8_t	ac_aifsn;