static int nf_tables_delobj(struct sk_buff *skb, const struct nfnl_info *info,
			    const struct nlattr * const nla[])
{
	struct netlink_ext_ack *extack = info->extack;
	u8 genmask = nft_genmask_next(info->net);
	u8 family = info->nfmsg->nfgen_family;
	struct net *net = info->net;
	const struct nlattr *attr;
	struct nft_table *table;
	struct nft_object *obj;
	struct nft_ctx ctx;
	u32 objtype;

	if (!nla[NFTA_OBJ_TYPE] ||
	    (!nla[NFTA_OBJ_NAME] && !nla[NFTA_OBJ_HANDLE]))
		return -EINVAL;

	table = nft_table_lookup(net, nla[NFTA_OBJ_TABLE], family, genmask,
				 NETLINK_CB(skb).portid);
	if (IS_ERR(table)) {
		NL_SET_BAD_ATTR(extack, nla[NFTA_OBJ_TABLE]);
		return PTR_ERR(table);
	}

	objtype = ntohl(nla_get_be32(nla[NFTA_OBJ_TYPE]));
	if (nla[NFTA_OBJ_HANDLE]) {
		attr = nla[NFTA_OBJ_HANDLE];
		obj = nft_obj_lookup_byhandle(table, attr, objtype, genmask);
	} else {
		attr = nla[NFTA_OBJ_NAME];
		obj = nft_obj_lookup(net, table, attr, objtype, genmask);
	}

	if (IS_ERR(obj)) {
		NL_SET_BAD_ATTR(extack, attr);
		return PTR_ERR(obj);
	}
	if (obj->use > 0) {
		NL_SET_BAD_ATTR(extack, attr);
		return -EBUSY;
	}

	nft_ctx_init(&ctx, net, skb, info->nlh, family, table, NULL, nla);

	return nft_delobj(&ctx, obj);
}
static int nf_tables_delobj(struct sk_buff *skb, const struct nfnl_info *info,
			    const struct nlattr * const nla[])
{
	struct netlink_ext_ack *extack = info->extack;
	u8 genmask = nft_genmask_next(info->net);
	u8 family = info->nfmsg->nfgen_family;
	struct net *net = info->net;
	const struct nlattr *attr;
	struct nft_table *table;
	struct nft_object *obj;
	struct nft_ctx ctx;
	u32 objtype;

	if (!nla[NFTA_OBJ_TYPE] ||
	    (!nla[NFTA_OBJ_NAME] && !nla[NFTA_OBJ_HANDLE]))
		return -EINVAL;

	table = nft_table_lookup(net, nla[NFTA_OBJ_TABLE], family, genmask,
				 NETLINK_CB(skb).portid);
	if (IS_ERR(table)) {
		NL_SET_BAD_ATTR(extack, nla[NFTA_OBJ_TABLE]);
		return PTR_ERR(table);
	}

	objtype = ntohl(nla_get_be32(nla[NFTA_OBJ_TYPE]));
	if (nla[NFTA_OBJ_HANDLE]) {
		attr = nla[NFTA_OBJ_HANDLE];
		obj = nft_obj_lookup_byhandle(table, attr, objtype, genmask);
	} else {
		attr = nla[NFTA_OBJ_NAME];
		obj = nft_obj_lookup(net, table, attr, objtype, genmask);
	}

	if (IS_ERR(obj)) {
		NL_SET_BAD_ATTR(extack, attr);
		return PTR_ERR(obj);
	}
	if (obj->use > 0) {
		NL_SET_BAD_ATTR(extack, attr);
		return -EBUSY;
	}

	nft_ctx_init(&ctx, net, skb, info->nlh, family, table, NULL, nla);

	return nft_delobj(&ctx, obj);
}