WLAN_ERP_BARKER_PREAMBLE  595 drivers/staging/rtl8192u/ieee80211/ieee80211.h #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
WLAN_ERP_BARKER_PREAMBLE 2202 include/linux/ieee80211.h #define WLAN_ERP_BARKER_PREAMBLE (1<<2)