[linux-block.git] / net / netfilter / nft_dynset.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2015 Patrick McHardy <kaber@trash.net>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/netlink.h>
#include <linux/netfilter.h>
#include <linux/netfilter/nf_tables.h>
#include <net/netfilter/nf_tables.h>
#include <net/netfilter/nf_tables_core.h>

struct nft_dynset {
	struct nft_set			*set;
	struct nft_set_ext_tmpl		tmpl;
	enum nft_dynset_ops		op:8;
	enum nft_registers		sreg_key:8;
	enum nft_registers		sreg_data:8;
	bool				invert;
	u64				timeout;
	struct nft_expr			*expr;
	struct nft_set_binding		binding;
};

static void *nft_dynset_new(struct nft_set *set, const struct nft_expr *expr,
			    struct nft_regs *regs)
{
	const struct nft_dynset *priv = nft_expr_priv(expr);
	struct nft_set_ext *ext;
	u64 timeout;
	void *elem;

	if (!atomic_add_unless(&set->nelems, 1, set->size))
		return NULL;

	timeout = priv->timeout ? : set->timeout;
	elem = nft_set_elem_init(set, &priv->tmpl,
				 &regs->data[priv->sreg_key], NULL,
				 &regs->data[priv->sreg_data],
				 timeout, 0, GFP_ATOMIC);
	if (elem == NULL)
		goto err1;

	ext = nft_set_elem_ext(set, elem);
	if (priv->expr != NULL &&
	    nft_expr_clone(nft_set_ext_expr(ext), priv->expr) < 0)
		goto err2;

	return elem;

err2:
	nft_set_elem_destroy(set, elem, false);
err1:
	if (set->size)
		atomic_dec(&set->nelems);
	return NULL;
}

void nft_dynset_eval(const struct nft_expr *expr,
		     struct nft_regs *regs, const struct nft_pktinfo *pkt)
{
	const struct nft_dynset *priv = nft_expr_priv(expr);
	struct nft_set *set = priv->set;
	const struct nft_set_ext *ext;
	u64 timeout;

	if (priv->op == NFT_DYNSET_OP_DELETE) {
		set->ops->delete(set, &regs->data[priv->sreg_key]);
		return;
	}

	if (set->ops->update(set, &regs->data[priv->sreg_key], nft_dynset_new,
			     expr, regs, &ext)) {
		if (priv->op == NFT_DYNSET_OP_UPDATE &&
		    nft_set_ext_exists(ext, NFT_SET_EXT_EXPIRATION)) {
			timeout = priv->timeout ? : set->timeout;
			*nft_set_ext_expiration(ext) = get_jiffies_64() + timeout;
		}

		nft_set_elem_update_expr(ext, regs, pkt);

		if (priv->invert)
			regs->verdict.code = NFT_BREAK;
		return;
	}

	if (!priv->invert)
		regs->verdict.code = NFT_BREAK;
}

static const struct nla_policy nft_dynset_policy[NFTA_DYNSET_MAX + 1] = {
	[NFTA_DYNSET_SET_NAME]	= { .type = NLA_STRING,
				    .len = NFT_SET_MAXNAMELEN - 1 },
	[NFTA_DYNSET_SET_ID]	= { .type = NLA_U32 },
	[NFTA_DYNSET_OP]	= { .type = NLA_U32 },
	[NFTA_DYNSET_SREG_KEY]	= { .type = NLA_U32 },
	[NFTA_DYNSET_SREG_DATA]	= { .type = NLA_U32 },
	[NFTA_DYNSET_TIMEOUT]	= { .type = NLA_U64 },
	[NFTA_DYNSET_EXPR]	= { .type = NLA_NESTED },
	[NFTA_DYNSET_FLAGS]	= { .type = NLA_U32 },
};

static int nft_dynset_init(const struct nft_ctx *ctx,
			   const struct nft_expr *expr,
			   const struct nlattr * const tb[])
{
	struct nft_dynset *priv = nft_expr_priv(expr);
	u8 genmask = nft_genmask_next(ctx->net);
	struct nft_set *set;
	u64 timeout;
	int err;

	lockdep_assert_held(&ctx->net->nft.commit_mutex);

	if (tb[NFTA_DYNSET_SET_NAME] == NULL ||
	    tb[NFTA_DYNSET_OP] == NULL ||
	    tb[NFTA_DYNSET_SREG_KEY] == NULL)
		return -EINVAL;

	if (tb[NFTA_DYNSET_FLAGS]) {
		u32 flags = ntohl(nla_get_be32(tb[NFTA_DYNSET_FLAGS]));

		if (flags & ~NFT_DYNSET_F_INV)
			return -EINVAL;
		if (flags & NFT_DYNSET_F_INV)
			priv->invert = true;
	}

	set = nft_set_lookup_global(ctx->net, ctx->table,
				    tb[NFTA_DYNSET_SET_NAME],
				    tb[NFTA_DYNSET_SET_ID], genmask);
	if (IS_ERR(set))
		return PTR_ERR(set);

	if (set->ops->update == NULL)
		return -EOPNOTSUPP;

	if (set->flags & NFT_SET_CONSTANT)
		return -EBUSY;

	priv->op = ntohl(nla_get_be32(tb[NFTA_DYNSET_OP]));
	switch (priv->op) {
	case NFT_DYNSET_OP_ADD:
	case NFT_DYNSET_OP_DELETE:
		break;
	case NFT_DYNSET_OP_UPDATE:
		if (!(set->flags & NFT_SET_TIMEOUT))
			return -EOPNOTSUPP;
		break;
	default:
		return -EOPNOTSUPP;
	}

	timeout = 0;
	if (tb[NFTA_DYNSET_TIMEOUT] != NULL) {
		if (!(set->flags & NFT_SET_TIMEOUT))
			return -EINVAL;

		err = nf_msecs_to_jiffies64(tb[NFTA_DYNSET_TIMEOUT], &timeout);
		if (err)
			return err;
	}

	priv->sreg_key = nft_parse_register(tb[NFTA_DYNSET_SREG_KEY]);
	err = nft_validate_register_load(priv->sreg_key, set->klen);
	if (err < 0)
		return err;

	if (tb[NFTA_DYNSET_SREG_DATA] != NULL) {
		if (!(set->flags & NFT_SET_MAP))
			return -EINVAL;
		if (set->dtype == NFT_DATA_VERDICT)
			return -EOPNOTSUPP;

		priv->sreg_data = nft_parse_register(tb[NFTA_DYNSET_SREG_DATA]);
		err = nft_validate_register_load(priv->sreg_data, set->dlen);
		if (err < 0)
			return err;
	} else if (set->flags & NFT_SET_MAP)
		return -EINVAL;

	if (tb[NFTA_DYNSET_EXPR] != NULL) {
		if (!(set->flags & NFT_SET_EVAL))
			return -EINVAL;

		priv->expr = nft_set_elem_expr_alloc(ctx, set,
						     tb[NFTA_DYNSET_EXPR]);
		if (IS_ERR(priv->expr))
			return PTR_ERR(priv->expr);

		if (set->expr && set->expr->ops != priv->expr->ops) {
			err = -EOPNOTSUPP;
			goto err_expr_free;
		}
	}

	nft_set_ext_prepare(&priv->tmpl);
	nft_set_ext_add_length(&priv->tmpl, NFT_SET_EXT_KEY, set->klen);
	if (set->flags & NFT_SET_MAP)
		nft_set_ext_add_length(&priv->tmpl, NFT_SET_EXT_DATA, set->dlen);
	if (priv->expr != NULL)
		nft_set_ext_add_length(&priv->tmpl, NFT_SET_EXT_EXPR,
				       priv->expr->ops->size);
	if (set->flags & NFT_SET_TIMEOUT) {
		if (timeout || set->timeout)
			nft_set_ext_add(&priv->tmpl, NFT_SET_EXT_EXPIRATION);
	}

	priv->timeout = timeout;

	err = nf_tables_bind_set(ctx, set, &priv->binding);
	if (err < 0)
		goto err_expr_free;

	if (set->size == 0)
		set->size = 0xffff;

	priv->set = set;
	return 0;

err_expr_free:
	if (priv->expr != NULL)
		nft_expr_destroy(ctx, priv->expr);
	return err;
}

static void nft_dynset_deactivate(const struct nft_ctx *ctx,
				  const struct nft_expr *expr,
				  enum nft_trans_phase phase)
{
	struct nft_dynset *priv = nft_expr_priv(expr);

	nf_tables_deactivate_set(ctx, priv->set, &priv->binding, phase);
}

static void nft_dynset_activate(const struct nft_ctx *ctx,
				const struct nft_expr *expr)
{
	struct nft_dynset *priv = nft_expr_priv(expr);

	priv->set->use++;
}

static void nft_dynset_destroy(const struct nft_ctx *ctx,
			       const struct nft_expr *expr)
{
	struct nft_dynset *priv = nft_expr_priv(expr);

	if (priv->expr != NULL)
		nft_expr_destroy(ctx, priv->expr);

	nf_tables_destroy_set(ctx, priv->set);
}

static int nft_dynset_dump(struct sk_buff *skb, const struct nft_expr *expr)
{
	const struct nft_dynset *priv = nft_expr_priv(expr);
	u32 flags = priv->invert ? NFT_DYNSET_F_INV : 0;

	if (nft_dump_register(skb, NFTA_DYNSET_SREG_KEY, priv->sreg_key))
		goto nla_put_failure;
	if (priv->set->flags & NFT_SET_MAP &&
	    nft_dump_register(skb, NFTA_DYNSET_SREG_DATA, priv->sreg_data))
		goto nla_put_failure;
	if (nla_put_be32(skb, NFTA_DYNSET_OP, htonl(priv->op)))
		goto nla_put_failure;
	if (nla_put_string(skb, NFTA_DYNSET_SET_NAME, priv->set->name))
		goto nla_put_failure;
	if (nla_put_be64(skb, NFTA_DYNSET_TIMEOUT,
			 nf_jiffies64_to_msecs(priv->timeout),
			 NFTA_DYNSET_PAD))
		goto nla_put_failure;
	if (priv->expr && nft_expr_dump(skb, NFTA_DYNSET_EXPR, priv->expr))
		goto nla_put_failure;
	if (nla_put_be32(skb, NFTA_DYNSET_FLAGS, htonl(flags)))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -1;
}

static const struct nft_expr_ops nft_dynset_ops = {
	.type		= &nft_dynset_type,
	.size		= NFT_EXPR_SIZE(sizeof(struct nft_dynset)),
	.eval		= nft_dynset_eval,
	.init		= nft_dynset_init,
	.destroy	= nft_dynset_destroy,
	.activate	= nft_dynset_activate,
	.deactivate	= nft_dynset_deactivate,
	.dump		= nft_dynset_dump,
};

struct nft_expr_type nft_dynset_type __read_mostly = {
	.name		= "dynset",
	.ops		= &nft_dynset_ops,
	.policy		= nft_dynset_policy,
	.maxattr	= NFTA_DYNSET_MAX,
	.owner		= THIS_MODULE,
};
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
22fe54d5 PM	2	/*
22fe54d5 PM	3	* Copyright (c) 2015 Patrick McHardy <kaber@trash.net>
22fe54d5 PM	4	*/
	5
	6	#include <linux/kernel.h>
	7	#include <linux/module.h>
	8	#include <linux/init.h>
	9	#include <linux/netlink.h>
	10	#include <linux/netfilter.h>
	11	#include <linux/netfilter/nf_tables.h>
	12	#include <net/netfilter/nf_tables.h>
	13	#include <net/netfilter/nf_tables_core.h>
	14
	15	struct nft_dynset {
	16	struct nft_set *set;
	17	struct nft_set_ext_tmpl tmpl;
	18	enum nft_dynset_ops op:8;
	19	enum nft_registers sreg_key:8;
	20	enum nft_registers sreg_data:8;
dbd2be06	21	bool invert;
22fe54d5	22	u64 timeout;
3e135cd4	23	struct nft_expr *expr;
22fe54d5 PM	24	struct nft_set_binding binding;
	25	};
	26
	27	static void nft_dynset_new(struct nft_set set, const struct nft_expr *expr,
a55e22e9	28	struct nft_regs *regs)
22fe54d5 PM	29	{
22fe54d5 PM	30	const struct nft_dynset *priv = nft_expr_priv(expr);
3e135cd4	31	struct nft_set_ext *ext;
22fe54d5 PM	32	u64 timeout;
	33	void *elem;
	34
99a0efbe	35	if (!atomic_add_unless(&set->nelems, 1, set->size))
22fe54d5 PM	36	return NULL;
	37
	38	timeout = priv->timeout ? : set->timeout;
	39	elem = nft_set_elem_init(set, &priv->tmpl,
7b225d0b	40	&regs->data[priv->sreg_key], NULL,
a55e22e9	41	&regs->data[priv->sreg_data],
79ebb5bb	42	timeout, 0, GFP_ATOMIC);
61f9e292 LZ	43	if (elem == NULL)
61f9e292 LZ	44	goto err1;
3e135cd4 PM	45
3e135cd4 PM	46	ext = nft_set_elem_ext(set, elem);
086f3321 PNA	47	if (priv->expr != NULL &&
086f3321 PNA	48	nft_expr_clone(nft_set_ext_expr(ext), priv->expr) < 0)
61f9e292	49	goto err2;
3e135cd4	50
22fe54d5	51	return elem;
61f9e292 LZ	52
	53	err2:
	54	nft_set_elem_destroy(set, elem, false);
	55	err1:
	56	if (set->size)
	57	atomic_dec(&set->nelems);
	58	return NULL;
22fe54d5 PM	59	}
22fe54d5 PM	60
10870dd8 FW	61	void nft_dynset_eval(const struct nft_expr *expr,
10870dd8 FW	62	struct nft_regs regs, const struct nft_pktinfo pkt)
22fe54d5 PM	63	{
	64	const struct nft_dynset *priv = nft_expr_priv(expr);
	65	struct nft_set *set = priv->set;
	66	const struct nft_set_ext *ext;
	67	u64 timeout;
	68
d0a8d877 AJ	69	if (priv->op == NFT_DYNSET_OP_DELETE) {
	70	set->ops->delete(set, &regs->data[priv->sreg_key]);
	71	return;
	72	}
	73
a55e22e9 PM	74	if (set->ops->update(set, &regs->data[priv->sreg_key], nft_dynset_new,
a55e22e9 PM	75	expr, regs, &ext)) {
22fe54d5 PM	76	if (priv->op == NFT_DYNSET_OP_UPDATE &&
	77	nft_set_ext_exists(ext, NFT_SET_EXT_EXPIRATION)) {
	78	timeout = priv->timeout ? : set->timeout;
b13468dc	79	*nft_set_ext_expiration(ext) = get_jiffies_64() + timeout;
277a2928	80	}
22fe54d5	81
76adfafe	82	nft_set_elem_update_expr(ext, regs, pkt);
dbd2be06 PNA	83
	84	if (priv->invert)
	85	regs->verdict.code = NFT_BREAK;
3e135cd4 PM	86	return;
3e135cd4 PM	87	}
277a2928	88
dbd2be06 PNA	89	if (!priv->invert)
dbd2be06 PNA	90	regs->verdict.code = NFT_BREAK;
22fe54d5 PM	91	}
	92
	93	static const struct nla_policy nft_dynset_policy[NFTA_DYNSET_MAX + 1] = {
b2fbd044 LZ	94	[NFTA_DYNSET_SET_NAME] = { .type = NLA_STRING,
b2fbd044 LZ	95	.len = NFT_SET_MAXNAMELEN - 1 },
22fe54d5 PM	96	[NFTA_DYNSET_SET_ID] = { .type = NLA_U32 },
	97	[NFTA_DYNSET_OP] = { .type = NLA_U32 },
	98	[NFTA_DYNSET_SREG_KEY] = { .type = NLA_U32 },
	99	[NFTA_DYNSET_SREG_DATA] = { .type = NLA_U32 },
	100	[NFTA_DYNSET_TIMEOUT] = { .type = NLA_U64 },
3e135cd4	101	[NFTA_DYNSET_EXPR] = { .type = NLA_NESTED },
dbd2be06	102	[NFTA_DYNSET_FLAGS] = { .type = NLA_U32 },
22fe54d5 PM	103	};
	104
	105	static int nft_dynset_init(const struct nft_ctx *ctx,
	106	const struct nft_expr *expr,
	107	const struct nlattr * const tb[])
	108	{
	109	struct nft_dynset *priv = nft_expr_priv(expr);
37a9cc52	110	u8 genmask = nft_genmask_next(ctx->net);
22fe54d5 PM	111	struct nft_set *set;
	112	u64 timeout;
	113	int err;
	114
f102d66b FW	115	lockdep_assert_held(&ctx->net->nft.commit_mutex);
f102d66b FW	116
22fe54d5 PM	117	if (tb[NFTA_DYNSET_SET_NAME] == NULL \|\|
	118	tb[NFTA_DYNSET_OP] == NULL \|\|
	119	tb[NFTA_DYNSET_SREG_KEY] == NULL)
	120	return -EINVAL;
	121
dbd2be06 PNA	122	if (tb[NFTA_DYNSET_FLAGS]) {
	123	u32 flags = ntohl(nla_get_be32(tb[NFTA_DYNSET_FLAGS]));
	124
	125	if (flags & ~NFT_DYNSET_F_INV)
	126	return -EINVAL;
	127	if (flags & NFT_DYNSET_F_INV)
	128	priv->invert = true;
	129	}
	130
10659cba PNA	131	set = nft_set_lookup_global(ctx->net, ctx->table,
	132	tb[NFTA_DYNSET_SET_NAME],
	133	tb[NFTA_DYNSET_SET_ID], genmask);
c7a72e3f PNA	134	if (IS_ERR(set))
c7a72e3f PNA	135	return PTR_ERR(set);
22fe54d5	136
bb6a6e8e LZ	137	if (set->ops->update == NULL)
	138	return -EOPNOTSUPP;
	139
22fe54d5 PM	140	if (set->flags & NFT_SET_CONSTANT)
	141	return -EBUSY;
	142
	143	priv->op = ntohl(nla_get_be32(tb[NFTA_DYNSET_OP]));
	144	switch (priv->op) {
	145	case NFT_DYNSET_OP_ADD:
d0a8d877	146	case NFT_DYNSET_OP_DELETE:
22fe54d5 PM	147	break;
	148	case NFT_DYNSET_OP_UPDATE:
	149	if (!(set->flags & NFT_SET_TIMEOUT))
	150	return -EOPNOTSUPP;
	151	break;
	152	default:
	153	return -EOPNOTSUPP;
	154	}
	155
	156	timeout = 0;
	157	if (tb[NFTA_DYNSET_TIMEOUT] != NULL) {
	158	if (!(set->flags & NFT_SET_TIMEOUT))
	159	return -EINVAL;
917d80d3 PNA	160
	161	err = nf_msecs_to_jiffies64(tb[NFTA_DYNSET_TIMEOUT], &timeout);
	162	if (err)
	163	return err;
22fe54d5 PM	164	}
22fe54d5 PM	165
b1c96ed3	166	priv->sreg_key = nft_parse_register(tb[NFTA_DYNSET_SREG_KEY]);
b0c3dc65	167	err = nft_validate_register_load(priv->sreg_key, set->klen);
22fe54d5 PM	168	if (err < 0)
	169	return err;
	170
	171	if (tb[NFTA_DYNSET_SREG_DATA] != NULL) {
	172	if (!(set->flags & NFT_SET_MAP))
	173	return -EINVAL;
	174	if (set->dtype == NFT_DATA_VERDICT)
	175	return -EOPNOTSUPP;
	176
b1c96ed3	177	priv->sreg_data = nft_parse_register(tb[NFTA_DYNSET_SREG_DATA]);
d07db988	178	err = nft_validate_register_load(priv->sreg_data, set->dlen);
22fe54d5 PM	179	if (err < 0)
	180	return err;
	181	} else if (set->flags & NFT_SET_MAP)
	182	return -EINVAL;
	183
3e135cd4 PM	184	if (tb[NFTA_DYNSET_EXPR] != NULL) {
	185	if (!(set->flags & NFT_SET_EVAL))
	186	return -EINVAL;
3e135cd4	187
a7fc9368 PNA	188	priv->expr = nft_set_elem_expr_alloc(ctx, set,
a7fc9368 PNA	189	tb[NFTA_DYNSET_EXPR]);
3e135cd4 PM	190	if (IS_ERR(priv->expr))
3e135cd4 PM	191	return PTR_ERR(priv->expr);
8548bde9 PNA	192
	193	if (set->expr && set->expr->ops != priv->expr->ops) {
	194	err = -EOPNOTSUPP;
	195	goto err_expr_free;
	196	}
215a31f1	197	}
3e135cd4	198
22fe54d5 PM	199	nft_set_ext_prepare(&priv->tmpl);
	200	nft_set_ext_add_length(&priv->tmpl, NFT_SET_EXT_KEY, set->klen);
	201	if (set->flags & NFT_SET_MAP)
	202	nft_set_ext_add_length(&priv->tmpl, NFT_SET_EXT_DATA, set->dlen);
3e135cd4 PM	203	if (priv->expr != NULL)
	204	nft_set_ext_add_length(&priv->tmpl, NFT_SET_EXT_EXPR,
	205	priv->expr->ops->size);
22fe54d5 PM	206	if (set->flags & NFT_SET_TIMEOUT) {
	207	if (timeout \|\| set->timeout)
	208	nft_set_ext_add(&priv->tmpl, NFT_SET_EXT_EXPIRATION);
	209	}
	210
	211	priv->timeout = timeout;
	212
	213	err = nf_tables_bind_set(ctx, set, &priv->binding);
	214	if (err < 0)
8548bde9	215	goto err_expr_free;
22fe54d5	216
99a0efbe FW	217	if (set->size == 0)
	218	set->size = 0xffff;
	219
22fe54d5 PM	220	priv->set = set;
22fe54d5 PM	221	return 0;
3e135cd4	222
8548bde9	223	err_expr_free:
3e135cd4 PM	224	if (priv->expr != NULL)
	225	nft_expr_destroy(ctx, priv->expr);
	226	return err;
22fe54d5 PM	227	}
22fe54d5 PM	228
cd5125d8	229	static void nft_dynset_deactivate(const struct nft_ctx *ctx,
f6ac8585 PNA	230	const struct nft_expr *expr,
f6ac8585 PNA	231	enum nft_trans_phase phase)
cd5125d8 FW	232	{
	233	struct nft_dynset *priv = nft_expr_priv(expr);
	234
273fe3f1 PNA	235	nf_tables_deactivate_set(ctx, priv->set, &priv->binding, phase);
	236	}
	237
	238	static void nft_dynset_activate(const struct nft_ctx *ctx,
	239	const struct nft_expr *expr)
	240	{
	241	struct nft_dynset *priv = nft_expr_priv(expr);
f6ac8585	242
273fe3f1	243	priv->set->use++;
cd5125d8 FW	244	}
cd5125d8 FW	245
22fe54d5 PM	246	static void nft_dynset_destroy(const struct nft_ctx *ctx,
	247	const struct nft_expr *expr)
	248	{
	249	struct nft_dynset *priv = nft_expr_priv(expr);
	250
3e135cd4 PM	251	if (priv->expr != NULL)
3e135cd4 PM	252	nft_expr_destroy(ctx, priv->expr);
cd5125d8 FW	253
cd5125d8 FW	254	nf_tables_destroy_set(ctx, priv->set);
22fe54d5 PM	255	}
	256
	257	static int nft_dynset_dump(struct sk_buff skb, const struct nft_expr expr)
	258	{
	259	const struct nft_dynset *priv = nft_expr_priv(expr);
dbd2be06	260	u32 flags = priv->invert ? NFT_DYNSET_F_INV : 0;
22fe54d5	261
b1c96ed3	262	if (nft_dump_register(skb, NFTA_DYNSET_SREG_KEY, priv->sreg_key))
22fe54d5 PM	263	goto nla_put_failure;
22fe54d5 PM	264	if (priv->set->flags & NFT_SET_MAP &&
b1c96ed3	265	nft_dump_register(skb, NFTA_DYNSET_SREG_DATA, priv->sreg_data))
22fe54d5 PM	266	goto nla_put_failure;
	267	if (nla_put_be32(skb, NFTA_DYNSET_OP, htonl(priv->op)))
	268	goto nla_put_failure;
	269	if (nla_put_string(skb, NFTA_DYNSET_SET_NAME, priv->set->name))
	270	goto nla_put_failure;
a8b1e36d	271	if (nla_put_be64(skb, NFTA_DYNSET_TIMEOUT,
917d80d3	272	nf_jiffies64_to_msecs(priv->timeout),
b46f6ded	273	NFTA_DYNSET_PAD))
22fe54d5	274	goto nla_put_failure;
3e135cd4 PM	275	if (priv->expr && nft_expr_dump(skb, NFTA_DYNSET_EXPR, priv->expr))
3e135cd4 PM	276	goto nla_put_failure;
dbd2be06 PNA	277	if (nla_put_be32(skb, NFTA_DYNSET_FLAGS, htonl(flags)))
dbd2be06 PNA	278	goto nla_put_failure;
22fe54d5 PM	279	return 0;
	280
	281	nla_put_failure:
	282	return -1;
	283	}
	284
22fe54d5 PM	285	static const struct nft_expr_ops nft_dynset_ops = {
	286	.type = &nft_dynset_type,
	287	.size = NFT_EXPR_SIZE(sizeof(struct nft_dynset)),
	288	.eval = nft_dynset_eval,
	289	.init = nft_dynset_init,
	290	.destroy = nft_dynset_destroy,
273fe3f1	291	.activate = nft_dynset_activate,
cd5125d8	292	.deactivate = nft_dynset_deactivate,
22fe54d5 PM	293	.dump = nft_dynset_dump,
	294	};
	295
4e24877e	296	struct nft_expr_type nft_dynset_type __read_mostly = {
22fe54d5 PM	297	.name = "dynset",
	298	.ops = &nft_dynset_ops,
	299	.policy = nft_dynset_policy,
	300	.maxattr = NFTA_DYNSET_MAX,
	301	.owner = THIS_MODULE,
	302	};