Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 788 insertions, 0 deletions

diff --git a/net/netfilter/nft_set_hash.c b/net/netfilter/nft_set_hash.c
new file mode 100644
index 000000000..2013de934
--- /dev/null
+++ b/net/netfilter/nft_set_hash.c
@@ -0,0 +1,788 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2008-2014 Patrick McHardy <kaber@trash.net>
+ *
+ * Development of this code funded by Astaro AG (http://www.astaro.com/)
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/log2.h>
+#include <linux/jhash.h>
+#include <linux/netlink.h>
+#include <linux/workqueue.h>
+#include <linux/rhashtable.h>
+#include <linux/netfilter.h>
+#include <linux/netfilter/nf_tables.h>
+#include <net/netfilter/nf_tables_core.h>
+
+/* We target a hash table size of 4, element hint is 75% of final size */
+#define NFT_RHASH_ELEMENT_HINT 3
+
+struct nft_rhash {
+	struct rhashtable		ht;
+	struct delayed_work		gc_work;
+};
+
+struct nft_rhash_elem {
+	struct rhash_head		node;
+	struct nft_set_ext		ext;
+};
+
+struct nft_rhash_cmp_arg {
+	const struct nft_set		*set;
+	const u32			*key;
+	u8				genmask;
+};
+
+static inline u32 nft_rhash_key(const void *data, u32 len, u32 seed)
+{
+	const struct nft_rhash_cmp_arg *arg = data;
+
+	return jhash(arg->key, len, seed);
+}
+
+static inline u32 nft_rhash_obj(const void *data, u32 len, u32 seed)
+{
+	const struct nft_rhash_elem *he = data;
+
+	return jhash(nft_set_ext_key(&he->ext), len, seed);
+}
+
+static inline int nft_rhash_cmp(struct rhashtable_compare_arg *arg,
+				const void *ptr)
+{
+	const struct nft_rhash_cmp_arg *x = arg->key;
+	const struct nft_rhash_elem *he = ptr;
+
+	if (memcmp(nft_set_ext_key(&he->ext), x->key, x->set->klen))
+		return 1;
+	if (nft_set_elem_is_dead(&he->ext))
+		return 1;
+	if (nft_set_elem_expired(&he->ext))
+		return 1;
+	if (!nft_set_elem_active(&he->ext, x->genmask))
+		return 1;
+	return 0;
+}
+
+static const struct rhashtable_params nft_rhash_params = {
+	.head_offset		= offsetof(struct nft_rhash_elem, node),
+	.hashfn			= nft_rhash_key,
+	.obj_hashfn		= nft_rhash_obj,
+	.obj_cmpfn		= nft_rhash_cmp,
+	.automatic_shrinking	= true,
+};
+
+INDIRECT_CALLABLE_SCOPE
+bool nft_rhash_lookup(const struct net *net, const struct nft_set *set,
+		      const u32 *key, const struct nft_set_ext **ext)
+{
+	struct nft_rhash *priv = nft_set_priv(set);
+	const struct nft_rhash_elem *he;
+	struct nft_rhash_cmp_arg arg = {
+		.genmask = nft_genmask_cur(net),
+		.set	 = set,
+		.key	 = key,
+	};
+
+	he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params);
+	if (he != NULL)
+		*ext = &he->ext;
+
+	return !!he;
+}
+
+static void *nft_rhash_get(const struct net *net, const struct nft_set *set,
+			   const struct nft_set_elem *elem, unsigned int flags)
+{
+	struct nft_rhash *priv = nft_set_priv(set);
+	struct nft_rhash_elem *he;
+	struct nft_rhash_cmp_arg arg = {
+		.genmask = nft_genmask_cur(net),
+		.set	 = set,
+		.key	 = elem->key.val.data,
+	};
+
+	he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params);
+	if (he != NULL)
+		return he;
+
+	return ERR_PTR(-ENOENT);
+}
+
+static bool nft_rhash_update(struct nft_set *set, const u32 *key,
+			     void *(*new)(struct nft_set *,
+					  const struct nft_expr *,
+					  struct nft_regs *regs),
+			     const struct nft_expr *expr,
+			     struct nft_regs *regs,
+			     const struct nft_set_ext **ext)
+{
+	struct nft_rhash *priv = nft_set_priv(set);
+	struct nft_rhash_elem *he, *prev;
+	struct nft_rhash_cmp_arg arg = {
+		.genmask = NFT_GENMASK_ANY,
+		.set	 = set,
+		.key	 = key,
+	};
+
+	he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params);
+	if (he != NULL)
+		goto out;
+
+	he = new(set, expr, regs);
+	if (he == NULL)
+		goto err1;
+
+	prev = rhashtable_lookup_get_insert_key(&priv->ht, &arg, &he->node,
+						nft_rhash_params);
+	if (IS_ERR(prev))
+		goto err2;
+
+	/* Another cpu may race to insert the element with the same key */
+	if (prev) {
+		nft_set_elem_destroy(set, he, true);
+		atomic_dec(&set->nelems);
+		he = prev;
+	}
+
+out:
+	*ext = &he->ext;
+	return true;
+
+err2:
+	nft_set_elem_destroy(set, he, true);
+	atomic_dec(&set->nelems);
+err1:
+	return false;
+}
+
+static int nft_rhash_insert(const struct net *net, const struct nft_set *set,
+			    const struct nft_set_elem *elem,
+			    struct nft_set_ext **ext)
+{
+	struct nft_rhash *priv = nft_set_priv(set);
+	struct nft_rhash_elem *he = elem->priv;
+	struct nft_rhash_cmp_arg arg = {
+		.genmask = nft_genmask_next(net),
+		.set	 = set,
+		.key	 = elem->key.val.data,
+	};
+	struct nft_rhash_elem *prev;
+
+	prev = rhashtable_lookup_get_insert_key(&priv->ht, &arg, &he->node,
+						nft_rhash_params);
+	if (IS_ERR(prev))
+		return PTR_ERR(prev);
+	if (prev) {
+		*ext = &prev->ext;
+		return -EEXIST;
+	}
+	return 0;
+}
+
+static void nft_rhash_activate(const struct net *net, const struct nft_set *set,
+			       const struct nft_set_elem *elem)
+{
+	struct nft_rhash_elem *he = elem->priv;
+
+	nft_set_elem_change_active(net, set, &he->ext);
+}
+
+static bool nft_rhash_flush(const struct net *net,
+			    const struct nft_set *set, void *priv)
+{
+	struct nft_rhash_elem *he = priv;
+
+	nft_set_elem_change_active(net, set, &he->ext);
+
+	return true;
+}
+
+static void *nft_rhash_deactivate(const struct net *net,
+				  const struct nft_set *set,
+				  const struct nft_set_elem *elem)
+{
+	struct nft_rhash *priv = nft_set_priv(set);
+	struct nft_rhash_elem *he;
+	struct nft_rhash_cmp_arg arg = {
+		.genmask = nft_genmask_next(net),
+		.set	 = set,
+		.key	 = elem->key.val.data,
+	};
+
+	rcu_read_lock();
+	he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params);
+	if (he)
+		nft_set_elem_change_active(net, set, &he->ext);
+
+	rcu_read_unlock();
+
+	return he;
+}
+
+static void nft_rhash_remove(const struct net *net,
+			     const struct nft_set *set,
+			     const struct nft_set_elem *elem)
+{
+	struct nft_rhash *priv = nft_set_priv(set);
+	struct nft_rhash_elem *he = elem->priv;
+
+	rhashtable_remove_fast(&priv->ht, &he->node, nft_rhash_params);
+}
+
+static bool nft_rhash_delete(const struct nft_set *set,
+			     const u32 *key)
+{
+	struct nft_rhash *priv = nft_set_priv(set);
+	struct nft_rhash_cmp_arg arg = {
+		.genmask = NFT_GENMASK_ANY,
+		.set = set,
+		.key = key,
+	};
+	struct nft_rhash_elem *he;
+
+	he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params);
+	if (he == NULL)
+		return false;
+
+	nft_set_elem_dead(&he->ext);
+
+	return true;
+}
+
+static void nft_rhash_walk(const struct nft_ctx *ctx, struct nft_set *set,
+			   struct nft_set_iter *iter)
+{
+	struct nft_rhash *priv = nft_set_priv(set);
+	struct nft_rhash_elem *he;
+	struct rhashtable_iter hti;
+	struct nft_set_elem elem;
+
+	rhashtable_walk_enter(&priv->ht, &hti);
+	rhashtable_walk_start(&hti);
+
+	while ((he = rhashtable_walk_next(&hti))) {
+		if (IS_ERR(he)) {
+			if (PTR_ERR(he) != -EAGAIN) {
+				iter->err = PTR_ERR(he);
+				break;
+			}
+
+			continue;
+		}
+
+		if (iter->count < iter->skip)
+			goto cont;
+		if (!nft_set_elem_active(&he->ext, iter->genmask))
+			goto cont;
+
+		elem.priv = he;
+
+		iter->err = iter->fn(ctx, set, iter, &elem);
+		if (iter->err < 0)
+			break;
+
+cont:
+		iter->count++;
+	}
+	rhashtable_walk_stop(&hti);
+	rhashtable_walk_exit(&hti);
+}
+
+static bool nft_rhash_expr_needs_gc_run(const struct nft_set *set,
+					struct nft_set_ext *ext)
+{
+	struct nft_set_elem_expr *elem_expr = nft_set_ext_expr(ext);
+	struct nft_expr *expr;
+	u32 size;
+
+	nft_setelem_expr_foreach(expr, elem_expr, size) {
+		if (expr->ops->gc &&
+		    expr->ops->gc(read_pnet(&set->net), expr))
+			return true;
+	}
+
+	return false;
+}
+
+static void nft_rhash_gc(struct work_struct *work)
+{
+	struct nftables_pernet *nft_net;
+	struct nft_set *set;
+	struct nft_rhash_elem *he;
+	struct nft_rhash *priv;
+	struct rhashtable_iter hti;
+	struct nft_trans_gc *gc;
+	struct net *net;
+	u32 gc_seq;
+
+	priv = container_of(work, struct nft_rhash, gc_work.work);
+	set  = nft_set_container_of(priv);
+	net  = read_pnet(&set->net);
+	nft_net = nft_pernet(net);
+	gc_seq = READ_ONCE(nft_net->gc_seq);
+
+	if (nft_set_gc_is_pending(set))
+		goto done;
+
+	gc = nft_trans_gc_alloc(set, gc_seq, GFP_KERNEL);
+	if (!gc)
+		goto done;
+
+	rhashtable_walk_enter(&priv->ht, &hti);
+	rhashtable_walk_start(&hti);
+
+	while ((he = rhashtable_walk_next(&hti))) {
+		if (IS_ERR(he)) {
+			nft_trans_gc_destroy(gc);
+			gc = NULL;
+			goto try_later;
+		}
+
+		/* Ruleset has been updated, try later. */
+		if (READ_ONCE(nft_net->gc_seq) != gc_seq) {
+			nft_trans_gc_destroy(gc);
+			gc = NULL;
+			goto try_later;
+		}
+
+		if (nft_set_elem_is_dead(&he->ext))
+			goto dead_elem;
+
+		if (nft_set_ext_exists(&he->ext, NFT_SET_EXT_EXPRESSIONS) &&
+		    nft_rhash_expr_needs_gc_run(set, &he->ext))
+			goto needs_gc_run;
+
+		if (!nft_set_elem_expired(&he->ext))
+			continue;
+needs_gc_run:
+		nft_set_elem_dead(&he->ext);
+dead_elem:
+		gc = nft_trans_gc_queue_async(gc, gc_seq, GFP_ATOMIC);
+		if (!gc)
+			goto try_later;
+
+		nft_trans_gc_elem_add(gc, he);
+	}
+
+	gc = nft_trans_gc_catchall_async(gc, gc_seq);
+
+try_later:
+	/* catchall list iteration requires rcu read side lock. */
+	rhashtable_walk_stop(&hti);
+	rhashtable_walk_exit(&hti);
+
+	if (gc)
+		nft_trans_gc_queue_async_done(gc);
+
+done:
+	queue_delayed_work(system_power_efficient_wq, &priv->gc_work,
+			   nft_set_gc_interval(set));
+}
+
+static u64 nft_rhash_privsize(const struct nlattr * const nla[],
+			      const struct nft_set_desc *desc)
+{
+	return sizeof(struct nft_rhash);
+}
+
+static void nft_rhash_gc_init(const struct nft_set *set)
+{
+	struct nft_rhash *priv = nft_set_priv(set);
+
+	queue_delayed_work(system_power_efficient_wq, &priv->gc_work,
+			   nft_set_gc_interval(set));
+}
+
+static int nft_rhash_init(const struct nft_set *set,
+			  const struct nft_set_desc *desc,
+			  const struct nlattr * const tb[])
+{
+	struct nft_rhash *priv = nft_set_priv(set);
+	struct rhashtable_params params = nft_rhash_params;
+	int err;
+
+	params.nelem_hint = desc->size ?: NFT_RHASH_ELEMENT_HINT;
+	params.key_len	  = set->klen;
+
+	err = rhashtable_init(&priv->ht, &params);
+	if (err < 0)
+		return err;
+
+	INIT_DEFERRABLE_WORK(&priv->gc_work, nft_rhash_gc);
+	if (set->flags & (NFT_SET_TIMEOUT | NFT_SET_EVAL))
+		nft_rhash_gc_init(set);
+
+	return 0;
+}
+
+struct nft_rhash_ctx {
+	const struct nft_ctx	ctx;
+	const struct nft_set	*set;
+};
+
+static void nft_rhash_elem_destroy(void *ptr, void *arg)
+{
+	struct nft_rhash_ctx *rhash_ctx = arg;
+
+	nf_tables_set_elem_destroy(&rhash_ctx->ctx, rhash_ctx->set, ptr);
+}
+
+static void nft_rhash_destroy(const struct nft_ctx *ctx,
+			      const struct nft_set *set)
+{
+	struct nft_rhash *priv = nft_set_priv(set);
+	struct nft_rhash_ctx rhash_ctx = {
+		.ctx	= *ctx,
+		.set	= set,
+	};
+
+	cancel_delayed_work_sync(&priv->gc_work);
+	rhashtable_free_and_destroy(&priv->ht, nft_rhash_elem_destroy,
+				    (void *)&rhash_ctx);
+}
+
+/* Number of buckets is stored in u32, so cap our result to 1U<<31 */
+#define NFT_MAX_BUCKETS (1U << 31)
+
+static u32 nft_hash_buckets(u32 size)
+{
+	u64 val = div_u64((u64)size * 4, 3);
+
+	if (val >= NFT_MAX_BUCKETS)
+		return NFT_MAX_BUCKETS;
+
+	return roundup_pow_of_two(val);
+}
+
+static bool nft_rhash_estimate(const struct nft_set_desc *desc, u32 features,
+			       struct nft_set_estimate *est)
+{
+	est->size   = ~0;
+	est->lookup = NFT_SET_CLASS_O_1;
+	est->space  = NFT_SET_CLASS_O_N;
+
+	return true;
+}
+
+struct nft_hash {
+	u32				seed;
+	u32				buckets;
+	struct hlist_head		table[];
+};
+
+struct nft_hash_elem {
+	struct hlist_node		node;
+	struct nft_set_ext		ext;
+};
+
+INDIRECT_CALLABLE_SCOPE
+bool nft_hash_lookup(const struct net *net, const struct nft_set *set,
+		     const u32 *key, const struct nft_set_ext **ext)
+{
+	struct nft_hash *priv = nft_set_priv(set);
+	u8 genmask = nft_genmask_cur(net);
+	const struct nft_hash_elem *he;
+	u32 hash;
+
+	hash = jhash(key, set->klen, priv->seed);
+	hash = reciprocal_scale(hash, priv->buckets);
+	hlist_for_each_entry_rcu(he, &priv->table[hash], node) {
+		if (!memcmp(nft_set_ext_key(&he->ext), key, set->klen) &&
+		    nft_set_elem_active(&he->ext, genmask)) {
+			*ext = &he->ext;
+			return true;
+		}
+	}
+	return false;
+}
+
+static void *nft_hash_get(const struct net *net, const struct nft_set *set,
+			  const struct nft_set_elem *elem, unsigned int flags)
+{
+	struct nft_hash *priv = nft_set_priv(set);
+	u8 genmask = nft_genmask_cur(net);
+	struct nft_hash_elem *he;
+	u32 hash;
+
+	hash = jhash(elem->key.val.data, set->klen, priv->seed);
+	hash = reciprocal_scale(hash, priv->buckets);
+	hlist_for_each_entry_rcu(he, &priv->table[hash], node) {
+		if (!memcmp(nft_set_ext_key(&he->ext), elem->key.val.data, set->klen) &&
+		    nft_set_elem_active(&he->ext, genmask))
+			return he;
+	}
+	return ERR_PTR(-ENOENT);
+}
+
+INDIRECT_CALLABLE_SCOPE
+bool nft_hash_lookup_fast(const struct net *net,
+			  const struct nft_set *set,
+			  const u32 *key, const struct nft_set_ext **ext)
+{
+	struct nft_hash *priv = nft_set_priv(set);
+	u8 genmask = nft_genmask_cur(net);
+	const struct nft_hash_elem *he;
+	u32 hash, k1, k2;
+
+	k1 = *key;
+	hash = jhash_1word(k1, priv->seed);
+	hash = reciprocal_scale(hash, priv->buckets);
+	hlist_for_each_entry_rcu(he, &priv->table[hash], node) {
+		k2 = *(u32 *)nft_set_ext_key(&he->ext)->data;
+		if (k1 == k2 &&
+		    nft_set_elem_active(&he->ext, genmask)) {
+			*ext = &he->ext;
+			return true;
+		}
+	}
+	return false;
+}
+
+static u32 nft_jhash(const struct nft_set *set, const struct nft_hash *priv,
+		     const struct nft_set_ext *ext)
+{
+	const struct nft_data *key = nft_set_ext_key(ext);
+	u32 hash, k1;
+
+	if (set->klen == 4) {
+		k1 = *(u32 *)key;
+		hash = jhash_1word(k1, priv->seed);
+	} else {
+		hash = jhash(key, set->klen, priv->seed);
+	}
+	hash = reciprocal_scale(hash, priv->buckets);
+
+	return hash;
+}
+
+static int nft_hash_insert(const struct net *net, const struct nft_set *set,
+			   const struct nft_set_elem *elem,
+			   struct nft_set_ext **ext)
+{
+	struct nft_hash_elem *this = elem->priv, *he;
+	struct nft_hash *priv = nft_set_priv(set);
+	u8 genmask = nft_genmask_next(net);
+	u32 hash;
+
+	hash = nft_jhash(set, priv, &this->ext);
+	hlist_for_each_entry(he, &priv->table[hash], node) {
+		if (!memcmp(nft_set_ext_key(&this->ext),
+			    nft_set_ext_key(&he->ext), set->klen) &&
+		    nft_set_elem_active(&he->ext, genmask)) {
+			*ext = &he->ext;
+			return -EEXIST;
+		}
+	}
+	hlist_add_head_rcu(&this->node, &priv->table[hash]);
+	return 0;
+}
+
+static void nft_hash_activate(const struct net *net, const struct nft_set *set,
+			      const struct nft_set_elem *elem)
+{
+	struct nft_hash_elem *he = elem->priv;
+
+	nft_set_elem_change_active(net, set, &he->ext);
+}
+
+static bool nft_hash_flush(const struct net *net,
+			   const struct nft_set *set, void *priv)
+{
+	struct nft_hash_elem *he = priv;
+
+	nft_set_elem_change_active(net, set, &he->ext);
+	return true;
+}
+
+static void *nft_hash_deactivate(const struct net *net,
+				 const struct nft_set *set,
+				 const struct nft_set_elem *elem)
+{
+	struct nft_hash *priv = nft_set_priv(set);
+	struct nft_hash_elem *this = elem->priv, *he;
+	u8 genmask = nft_genmask_next(net);
+	u32 hash;
+
+	hash = nft_jhash(set, priv, &this->ext);
+	hlist_for_each_entry(he, &priv->table[hash], node) {
+		if (!memcmp(nft_set_ext_key(&he->ext), &elem->key.val,
+			    set->klen) &&
+		    nft_set_elem_active(&he->ext, genmask)) {
+			nft_set_elem_change_active(net, set, &he->ext);
+			return he;
+		}
+	}
+	return NULL;
+}
+
+static void nft_hash_remove(const struct net *net,
+			    const struct nft_set *set,
+			    const struct nft_set_elem *elem)
+{
+	struct nft_hash_elem *he = elem->priv;
+
+	hlist_del_rcu(&he->node);
+}
+
+static void nft_hash_walk(const struct nft_ctx *ctx, struct nft_set *set,
+			  struct nft_set_iter *iter)
+{
+	struct nft_hash *priv = nft_set_priv(set);
+	struct nft_hash_elem *he;
+	struct nft_set_elem elem;
+	int i;
+
+	for (i = 0; i < priv->buckets; i++) {
+		hlist_for_each_entry_rcu(he, &priv->table[i], node) {
+			if (iter->count < iter->skip)
+				goto cont;
+			if (!nft_set_elem_active(&he->ext, iter->genmask))
+				goto cont;
+
+			elem.priv = he;
+
+			iter->err = iter->fn(ctx, set, iter, &elem);
+			if (iter->err < 0)
+				return;
+cont:
+			iter->count++;
+		}
+	}
+}
+
+static u64 nft_hash_privsize(const struct nlattr * const nla[],
+			     const struct nft_set_desc *desc)
+{
+	return sizeof(struct nft_hash) +
+	       (u64)nft_hash_buckets(desc->size) * sizeof(struct hlist_head);
+}
+
+static int nft_hash_init(const struct nft_set *set,
+			 const struct nft_set_desc *desc,
+			 const struct nlattr * const tb[])
+{
+	struct nft_hash *priv = nft_set_priv(set);
+
+	priv->buckets = nft_hash_buckets(desc->size);
+	get_random_bytes(&priv->seed, sizeof(priv->seed));
+
+	return 0;
+}
+
+static void nft_hash_destroy(const struct nft_ctx *ctx,
+			     const struct nft_set *set)
+{
+	struct nft_hash *priv = nft_set_priv(set);
+	struct nft_hash_elem *he;
+	struct hlist_node *next;
+	int i;
+
+	for (i = 0; i < priv->buckets; i++) {
+		hlist_for_each_entry_safe(he, next, &priv->table[i], node) {
+			hlist_del_rcu(&he->node);
+			nf_tables_set_elem_destroy(ctx, set, he);
+		}
+	}
+}
+
+static bool nft_hash_estimate(const struct nft_set_desc *desc, u32 features,
+			      struct nft_set_estimate *est)
+{
+	if (!desc->size)
+		return false;
+
+	if (desc->klen == 4)
+		return false;
+
+	est->size   = sizeof(struct nft_hash) +
+		      (u64)nft_hash_buckets(desc->size) * sizeof(struct hlist_head) +
+		      (u64)desc->size * sizeof(struct nft_hash_elem);
+	est->lookup = NFT_SET_CLASS_O_1;
+	est->space  = NFT_SET_CLASS_O_N;
+
+	return true;
+}
+
+static bool nft_hash_fast_estimate(const struct nft_set_desc *desc, u32 features,
+				   struct nft_set_estimate *est)
+{
+	if (!desc->size)
+		return false;
+
+	if (desc->klen != 4)
+		return false;
+
+	est->size   = sizeof(struct nft_hash) +
+		      (u64)nft_hash_buckets(desc->size) * sizeof(struct hlist_head) +
+		      (u64)desc->size * sizeof(struct nft_hash_elem);
+	est->lookup = NFT_SET_CLASS_O_1;
+	est->space  = NFT_SET_CLASS_O_N;
+
+	return true;
+}
+
+const struct nft_set_type nft_set_rhash_type = {
+	.features	= NFT_SET_MAP | NFT_SET_OBJECT |
+			  NFT_SET_TIMEOUT | NFT_SET_EVAL,
+	.ops		= {
+		.privsize       = nft_rhash_privsize,
+		.elemsize	= offsetof(struct nft_rhash_elem, ext),
+		.estimate	= nft_rhash_estimate,
+		.init		= nft_rhash_init,
+		.gc_init	= nft_rhash_gc_init,
+		.destroy	= nft_rhash_destroy,
+		.insert		= nft_rhash_insert,
+		.activate	= nft_rhash_activate,
+		.deactivate	= nft_rhash_deactivate,
+		.flush		= nft_rhash_flush,
+		.remove		= nft_rhash_remove,
+		.lookup		= nft_rhash_lookup,
+		.update		= nft_rhash_update,
+		.delete		= nft_rhash_delete,
+		.walk		= nft_rhash_walk,
+		.get		= nft_rhash_get,
+	},
+};
+
+const struct nft_set_type nft_set_hash_type = {
+	.features	= NFT_SET_MAP | NFT_SET_OBJECT,
+	.ops		= {
+		.privsize       = nft_hash_privsize,
+		.elemsize	= offsetof(struct nft_hash_elem, ext),
+		.estimate	= nft_hash_estimate,
+		.init		= nft_hash_init,
+		.destroy	= nft_hash_destroy,
+		.insert		= nft_hash_insert,
+		.activate	= nft_hash_activate,
+		.deactivate	= nft_hash_deactivate,
+		.flush		= nft_hash_flush,
+		.remove		= nft_hash_remove,
+		.lookup		= nft_hash_lookup,
+		.walk		= nft_hash_walk,
+		.get		= nft_hash_get,
+	},
+};
+
+const struct nft_set_type nft_set_hash_fast_type = {
+	.features	= NFT_SET_MAP | NFT_SET_OBJECT,
+	.ops		= {
+		.privsize       = nft_hash_privsize,
+		.elemsize	= offsetof(struct nft_hash_elem, ext),
+		.estimate	= nft_hash_fast_estimate,
+		.init		= nft_hash_init,
+		.destroy	= nft_hash_destroy,
+		.insert		= nft_hash_insert,
+		.activate	= nft_hash_activate,
+		.deactivate	= nft_hash_deactivate,
+		.flush		= nft_hash_flush,
+		.remove		= nft_hash_remove,
+		.lookup		= nft_hash_lookup_fast,
+		.walk		= nft_hash_walk,
+		.get		= nft_hash_get,
+	},
+};