static int nf_tables_dump_sets_start(struct netlink_callback *cb)
{
	struct nft_ctx *ctx_dump = NULL;

	ctx_dump = kmemdup(cb->data, sizeof(*ctx_dump), GFP_ATOMIC);
	if (ctx_dump == NULL)
		return -ENOMEM;

	cb->data = ctx_dump;
	return 0;
}
static int nf_tables_dump_sets_start(struct netlink_callback *cb)
{
	struct nft_ctx *ctx_dump = NULL;

	ctx_dump = kmemdup(cb->data, sizeof(*ctx_dump), GFP_ATOMIC);
	if (ctx_dump == NULL)
		return -ENOMEM;

	cb->data = ctx_dump;
	return 0;
}