IEEE80211_STATMASK_SIGNAL  597 drivers/staging/rtl8192u/ieee80211/ieee80211.h #define IEEE80211_STATMASK_SIGNAL (1<<0)
IEEE80211_STATMASK_SIGNAL  315 drivers/staging/rtl8712/ieee80211.h #define IEEE80211_STATMASK_SIGNAL BIT(0)
IEEE80211_STATMASK_SIGNAL  372 drivers/staging/rtl8723bs/include/ieee80211.h #define IEEE80211_STATMASK_SIGNAL (1<<0)