__constant_ntohl   16 include/uapi/linux/byteorder/big_endian.h #define __constant_ntohl(x) ((__force __u32)(__be32)(x))
__constant_ntohl   16 include/uapi/linux/byteorder/little_endian.h #define __constant_ntohl(x) ___constant_swab32((__force __be32)(x))