NON_EXPLICIT_ACK  308 drivers/staging/rtl8188eu/include/ieee80211.h #define NON_EXPLICIT_ACK		2
NON_EXPLICIT_ACK  247 drivers/staging/rtl8712/ieee80211.h #define NON_EXPLICIT_ACK	2
NON_EXPLICIT_ACK  311 drivers/staging/rtl8723bs/include/ieee80211.h #define NON_EXPLICIT_ACK	2