_roundup2
#define NETLINK_ALIGN(_len) _roundup2(_len, NETLINK_ALIGN_SIZE)
#define NLA_ALIGN(_len) _roundup2(_len, NLA_ALIGN_SIZE)
#define NETLINK_ALIGN(_len) _roundup2(_len, NETLINK_ALIGN_SIZE)
uint32_t sz_bytes = _roundup2(target->nla_bitset_size, 32) / 8;
if (data_len != sz_bytes || _roundup2(data_len, 4) != data_len)
if (data_len != sz_bytes || _roundup2(data_len, 4) != data_len)