CCK_DURATION      144 net/mac80211/rc80211_minstrel_ht.c 	(CCK_DURATION((_bitrate > 10 ? 20 : 10), false, 60) +	\
CCK_DURATION      145 net/mac80211/rc80211_minstrel_ht.c 	 CCK_DURATION(_bitrate, _short, AVG_PKT_SIZE))