NAV_PROT_LEN      195 drivers/net/wireless/realtek/rtlwifi/rtl8192se/reg.h #define	NAV_PROT_LEN				0x0234
NAV_PROT_LEN       30 drivers/staging/rtl8712/rtl8712_wmac_regdef.h #define NAV_PROT_LEN			(RTL8712_WMAC_ + 0x34)