__NLA_ENSURE
(__NLA_ENSURE(__NLA_IS_UINT_TYPE(tp)) + tp)
(__NLA_ENSURE(__NLA_IS_UINT_TYPE(tp) || \
(__NLA_ENSURE(__NLA_IS_SINT_TYPE(tp)) + tp)
(__NLA_ENSURE(__NLA_IS_UINT_TYPE(tp) || \
(__NLA_ENSURE(tp != NLA_BITFIELD32 && \