IPSET_ATTR_IPADDR_IPV4
ret = nla_put_in_addr(skb, IPSET_ATTR_IPADDR_IPV4, ipaddr);
[IPSET_ATTR_IPADDR_IPV4] = { .type = NLA_U32 },
if (unlikely(!ip_set_attr_netorder(tb, IPSET_ATTR_IPADDR_IPV4)))
*ipaddr = nla_get_be32(tb[IPSET_ATTR_IPADDR_IPV4]);