WLAN_HDR_A4_LEN    15 drivers/staging/rtl8188eu/include/wifi.h #define WLAN_HDR_A4_LEN		30
WLAN_HDR_A4_LEN    24 drivers/staging/rtl8712/wifi.h #define WLAN_HDR_A4_LEN		30
WLAN_HDR_A4_LEN    26 drivers/staging/rtl8723bs/include/wifi.h #define WLAN_HDR_A4_LEN		30
WLAN_HDR_A4_LEN    70 drivers/staging/wlan-ng/p80211hdr.h #define WLAN_HDR_A4_LEN			30