Something

orospakr@orospakr-laptop:/usr/src/linux-headers-2.6.22-6-generic$ find | grep -i 80211
./include/linux/ieee80211.h
./include/linux/nl80211.h
./include/config/wlan/pre80211.h
./include/config/wlan/80211.h
./include/config/mac80211
./include/config/mac80211/debugfs.h
./include/config/mac80211.h
./include/config/ieee80211.h
./include/config/ieee80211
./include/config/ieee80211/softmac.h
./include/config/ieee80211/crypt
./include/config/ieee80211/crypt/tkip.h
./include/config/ieee80211/crypt/ccmp.h
./include/config/ieee80211/crypt/wep.h
./include/config/cfg80211.h