HAL92C_MSDU_LIFE_TIME_UNIT 1286 drivers/staging/rtl8188eu/include/rtl8188e_spec.h #define	HAL92C_MSDU_LIFE_TIME_UNIT		128	/*  in us */
HAL92C_MSDU_LIFE_TIME_UNIT 1688 drivers/staging/rtl8723bs/include/hal_com_reg.h #define HAL92C_MSDU_LIFE_TIME_UNIT		128	/*  in us, said by Tim. */