[linux.git] / crypto / crypto_user_stat.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Crypto user configuration API.
 *
 * Copyright (C) 2017-2018 Corentin Labbe <[email protected]>
 *
 */

#include <linux/crypto.h>
#include <linux/cryptouser.h>
#include <linux/sched.h>
#include <net/netlink.h>
#include <crypto/internal/skcipher.h>
#include <crypto/internal/rng.h>
#include <crypto/akcipher.h>
#include <crypto/kpp.h>
#include <crypto/internal/cryptouser.h>

#include "internal.h"

#define null_terminated(x)	(strnlen(x, sizeof(x)) < sizeof(x))

static DEFINE_MUTEX(crypto_cfg_mutex);

extern struct sock *crypto_nlsk;

struct crypto_dump_info {
	struct sk_buff *in_skb;
	struct sk_buff *out_skb;
	u32 nlmsg_seq;
	u16 nlmsg_flags;
};

static int crypto_report_aead(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat raead;
	u64 v64;
	u32 v32;

	memset(&raead, 0, sizeof(raead));

	strncpy(raead.type, "aead", sizeof(raead.type));

	v32 = atomic_read(&alg->encrypt_cnt);
	raead.stat_encrypt_cnt = v32;
	v64 = atomic64_read(&alg->encrypt_tlen);
	raead.stat_encrypt_tlen = v64;
	v32 = atomic_read(&alg->decrypt_cnt);
	raead.stat_decrypt_cnt = v32;
	v64 = atomic64_read(&alg->decrypt_tlen);
	raead.stat_decrypt_tlen = v64;
	v32 = atomic_read(&alg->aead_err_cnt);
	raead.stat_aead_err_cnt = v32;

	if (nla_put(skb, CRYPTOCFGA_STAT_AEAD,
		    sizeof(struct crypto_stat), &raead))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -EMSGSIZE;
}

static int crypto_report_cipher(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat rcipher;
	u64 v64;
	u32 v32;

	memset(&rcipher, 0, sizeof(rcipher));

	strlcpy(rcipher.type, "cipher", sizeof(rcipher.type));

	v32 = atomic_read(&alg->encrypt_cnt);
	rcipher.stat_encrypt_cnt = v32;
	v64 = atomic64_read(&alg->encrypt_tlen);
	rcipher.stat_encrypt_tlen = v64;
	v32 = atomic_read(&alg->decrypt_cnt);
	rcipher.stat_decrypt_cnt = v32;
	v64 = atomic64_read(&alg->decrypt_tlen);
	rcipher.stat_decrypt_tlen = v64;
	v32 = atomic_read(&alg->cipher_err_cnt);
	rcipher.stat_cipher_err_cnt = v32;

	if (nla_put(skb, CRYPTOCFGA_STAT_CIPHER,
		    sizeof(struct crypto_stat), &rcipher))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -EMSGSIZE;
}

static int crypto_report_comp(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat rcomp;
	u64 v64;
	u32 v32;

	memset(&rcomp, 0, sizeof(rcomp));

	strlcpy(rcomp.type, "compression", sizeof(rcomp.type));
	v32 = atomic_read(&alg->compress_cnt);
	rcomp.stat_compress_cnt = v32;
	v64 = atomic64_read(&alg->compress_tlen);
	rcomp.stat_compress_tlen = v64;
	v32 = atomic_read(&alg->decompress_cnt);
	rcomp.stat_decompress_cnt = v32;
	v64 = atomic64_read(&alg->decompress_tlen);
	rcomp.stat_decompress_tlen = v64;
	v32 = atomic_read(&alg->cipher_err_cnt);
	rcomp.stat_compress_err_cnt = v32;

	if (nla_put(skb, CRYPTOCFGA_STAT_COMPRESS,
		    sizeof(struct crypto_stat), &rcomp))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -EMSGSIZE;
}

static int crypto_report_acomp(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat racomp;
	u64 v64;
	u32 v32;

	memset(&racomp, 0, sizeof(racomp));

	strlcpy(racomp.type, "acomp", sizeof(racomp.type));
	v32 = atomic_read(&alg->compress_cnt);
	racomp.stat_compress_cnt = v32;
	v64 = atomic64_read(&alg->compress_tlen);
	racomp.stat_compress_tlen = v64;
	v32 = atomic_read(&alg->decompress_cnt);
	racomp.stat_decompress_cnt = v32;
	v64 = atomic64_read(&alg->decompress_tlen);
	racomp.stat_decompress_tlen = v64;
	v32 = atomic_read(&alg->cipher_err_cnt);
	racomp.stat_compress_err_cnt = v32;

	if (nla_put(skb, CRYPTOCFGA_STAT_ACOMP,
		    sizeof(struct crypto_stat), &racomp))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -EMSGSIZE;
}

static int crypto_report_akcipher(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat rakcipher;
	u64 v64;
	u32 v32;

	memset(&rakcipher, 0, sizeof(rakcipher));

	strncpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
	v32 = atomic_read(&alg->encrypt_cnt);
	rakcipher.stat_encrypt_cnt = v32;
	v64 = atomic64_read(&alg->encrypt_tlen);
	rakcipher.stat_encrypt_tlen = v64;
	v32 = atomic_read(&alg->decrypt_cnt);
	rakcipher.stat_decrypt_cnt = v32;
	v64 = atomic64_read(&alg->decrypt_tlen);
	rakcipher.stat_decrypt_tlen = v64;
	v32 = atomic_read(&alg->sign_cnt);
	rakcipher.stat_sign_cnt = v32;
	v32 = atomic_read(&alg->verify_cnt);
	rakcipher.stat_verify_cnt = v32;
	v32 = atomic_read(&alg->akcipher_err_cnt);
	rakcipher.stat_akcipher_err_cnt = v32;

	if (nla_put(skb, CRYPTOCFGA_STAT_AKCIPHER,
		    sizeof(struct crypto_stat), &rakcipher))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -EMSGSIZE;
}

static int crypto_report_kpp(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat rkpp;
	u32 v;

	memset(&rkpp, 0, sizeof(rkpp));

	strlcpy(rkpp.type, "kpp", sizeof(rkpp.type));

	v = atomic_read(&alg->setsecret_cnt);
	rkpp.stat_setsecret_cnt = v;
	v = atomic_read(&alg->generate_public_key_cnt);
	rkpp.stat_generate_public_key_cnt = v;
	v = atomic_read(&alg->compute_shared_secret_cnt);
	rkpp.stat_compute_shared_secret_cnt = v;
	v = atomic_read(&alg->kpp_err_cnt);
	rkpp.stat_kpp_err_cnt = v;

	if (nla_put(skb, CRYPTOCFGA_STAT_KPP,
		    sizeof(struct crypto_stat), &rkpp))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -EMSGSIZE;
}

static int crypto_report_ahash(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat rhash;
	u64 v64;
	u32 v32;

	memset(&rhash, 0, sizeof(rhash));

	strncpy(rhash.type, "ahash", sizeof(rhash.type));

	v32 = atomic_read(&alg->hash_cnt);
	rhash.stat_hash_cnt = v32;
	v64 = atomic64_read(&alg->hash_tlen);
	rhash.stat_hash_tlen = v64;
	v32 = atomic_read(&alg->hash_err_cnt);
	rhash.stat_hash_err_cnt = v32;

	if (nla_put(skb, CRYPTOCFGA_STAT_HASH,
		    sizeof(struct crypto_stat), &rhash))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -EMSGSIZE;
}

static int crypto_report_shash(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat rhash;
	u64 v64;
	u32 v32;

	memset(&rhash, 0, sizeof(rhash));

	strncpy(rhash.type, "shash", sizeof(rhash.type));

	v32 = atomic_read(&alg->hash_cnt);
	rhash.stat_hash_cnt = v32;
	v64 = atomic64_read(&alg->hash_tlen);
	rhash.stat_hash_tlen = v64;
	v32 = atomic_read(&alg->hash_err_cnt);
	rhash.stat_hash_err_cnt = v32;

	if (nla_put(skb, CRYPTOCFGA_STAT_HASH,
		    sizeof(struct crypto_stat), &rhash))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -EMSGSIZE;
}

static int crypto_report_rng(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat rrng;
	u64 v64;
	u32 v32;

	memset(&rrng, 0, sizeof(rrng));

	strncpy(rrng.type, "rng", sizeof(rrng.type));

	v32 = atomic_read(&alg->generate_cnt);
	rrng.stat_generate_cnt = v32;
	v64 = atomic64_read(&alg->generate_tlen);
	rrng.stat_generate_tlen = v64;
	v32 = atomic_read(&alg->seed_cnt);
	rrng.stat_seed_cnt = v32;
	v32 = atomic_read(&alg->hash_err_cnt);
	rrng.stat_rng_err_cnt = v32;

	if (nla_put(skb, CRYPTOCFGA_STAT_RNG,
		    sizeof(struct crypto_stat), &rrng))
		goto nla_put_failure;
	return 0;

nla_put_failure:
	return -EMSGSIZE;
}

static int crypto_reportstat_one(struct crypto_alg *alg,
				 struct crypto_user_alg *ualg,
				 struct sk_buff *skb)
{
	memset(ualg, 0, sizeof(*ualg));

	strlcpy(ualg->cru_name, alg->cra_name, sizeof(ualg->cru_name));
	strlcpy(ualg->cru_driver_name, alg->cra_driver_name,
		sizeof(ualg->cru_driver_name));
	strlcpy(ualg->cru_module_name, module_name(alg->cra_module),
		sizeof(ualg->cru_module_name));

	ualg->cru_type = 0;
	ualg->cru_mask = 0;
	ualg->cru_flags = alg->cra_flags;
	ualg->cru_refcnt = refcount_read(&alg->cra_refcnt);

	if (nla_put_u32(skb, CRYPTOCFGA_PRIORITY_VAL, alg->cra_priority))
		goto nla_put_failure;
	if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
		struct crypto_stat rl;

		memset(&rl, 0, sizeof(rl));
		strlcpy(rl.type, "larval", sizeof(rl.type));
		if (nla_put(skb, CRYPTOCFGA_STAT_LARVAL,
			    sizeof(struct crypto_stat), &rl))
			goto nla_put_failure;
		goto out;
	}

	switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) {
	case CRYPTO_ALG_TYPE_AEAD:
		if (crypto_report_aead(skb, alg))
			goto nla_put_failure;
		break;
	case CRYPTO_ALG_TYPE_SKCIPHER:
		if (crypto_report_cipher(skb, alg))
			goto nla_put_failure;
		break;
	case CRYPTO_ALG_TYPE_BLKCIPHER:
		if (crypto_report_cipher(skb, alg))
			goto nla_put_failure;
		break;
	case CRYPTO_ALG_TYPE_CIPHER:
		if (crypto_report_cipher(skb, alg))
			goto nla_put_failure;
		break;
	case CRYPTO_ALG_TYPE_COMPRESS:
		if (crypto_report_comp(skb, alg))
			goto nla_put_failure;
		break;
	case CRYPTO_ALG_TYPE_ACOMPRESS:
		if (crypto_report_acomp(skb, alg))
			goto nla_put_failure;
		break;
	case CRYPTO_ALG_TYPE_SCOMPRESS:
		if (crypto_report_acomp(skb, alg))
			goto nla_put_failure;
		break;
	case CRYPTO_ALG_TYPE_AKCIPHER:
		if (crypto_report_akcipher(skb, alg))
			goto nla_put_failure;
		break;
	case CRYPTO_ALG_TYPE_KPP:
		if (crypto_report_kpp(skb, alg))
			goto nla_put_failure;
		break;
	case CRYPTO_ALG_TYPE_AHASH:
		if (crypto_report_ahash(skb, alg))
			goto nla_put_failure;
		break;
	case CRYPTO_ALG_TYPE_HASH:
		if (crypto_report_shash(skb, alg))
			goto nla_put_failure;
		break;
	case CRYPTO_ALG_TYPE_RNG:
		if (crypto_report_rng(skb, alg))
			goto nla_put_failure;
		break;
	default:
		pr_err("ERROR: Unhandled alg %d in %s\n",
		       alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL),
		       __func__);
	}

out:
	return 0;

nla_put_failure:
	return -EMSGSIZE;
}

static int crypto_reportstat_alg(struct crypto_alg *alg,
				 struct crypto_dump_info *info)
{
	struct sk_buff *in_skb = info->in_skb;
	struct sk_buff *skb = info->out_skb;
	struct nlmsghdr *nlh;
	struct crypto_user_alg *ualg;
	int err = 0;

	nlh = nlmsg_put(skb, NETLINK_CB(in_skb).portid, info->nlmsg_seq,
			CRYPTO_MSG_GETSTAT, sizeof(*ualg), info->nlmsg_flags);
	if (!nlh) {
		err = -EMSGSIZE;
		goto out;
	}

	ualg = nlmsg_data(nlh);

	err = crypto_reportstat_one(alg, ualg, skb);
	if (err) {
		nlmsg_cancel(skb, nlh);
		goto out;
	}

	nlmsg_end(skb, nlh);

out:
	return err;
}

int crypto_reportstat(struct sk_buff *in_skb, struct nlmsghdr *in_nlh,
		      struct nlattr **attrs)
{
	struct crypto_user_alg *p = nlmsg_data(in_nlh);
	struct crypto_alg *alg;
	struct sk_buff *skb;
	struct crypto_dump_info info;
	int err;

	if (!null_terminated(p->cru_name) || !null_terminated(p->cru_driver_name))
		return -EINVAL;

	alg = crypto_alg_match(p, 0);
	if (!alg)
		return -ENOENT;

	err = -ENOMEM;
	skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
	if (!skb)
		goto drop_alg;

	info.in_skb = in_skb;
	info.out_skb = skb;
	info.nlmsg_seq = in_nlh->nlmsg_seq;
	info.nlmsg_flags = 0;

	err = crypto_reportstat_alg(alg, &info);

drop_alg:
	crypto_mod_put(alg);

	if (err)
		return err;

	return nlmsg_unicast(crypto_nlsk, skb, NETLINK_CB(in_skb).portid);
}

int crypto_dump_reportstat(struct sk_buff *skb, struct netlink_callback *cb)
{
	struct crypto_alg *alg;
	struct crypto_dump_info info;
	int err;

	if (cb->args[0])
		goto out;

	cb->args[0] = 1;

	info.in_skb = cb->skb;
	info.out_skb = skb;
	info.nlmsg_seq = cb->nlh->nlmsg_seq;
	info.nlmsg_flags = NLM_F_MULTI;

	list_for_each_entry(alg, &crypto_alg_list, cra_list) {
		err = crypto_reportstat_alg(alg, &info);
		if (err)
			goto out_err;
	}

out:
	return skb->len;
out_err:
	return err;
}

int crypto_dump_reportstat_done(struct netlink_callback *cb)
{
	return 0;
}

MODULE_LICENSE("GPL");
Commit	Line	Data
cac5818c CL	1	// SPDX-License-Identifier: GPL-2.0
	2	/*
	3	* Crypto user configuration API.
	4	*
	5	* Copyright (C) 2017-2018 Corentin Labbe <[email protected]>
	6	*
	7	*/
	8
	9	#include <linux/crypto.h>
	10	#include <linux/cryptouser.h>
	11	#include <linux/sched.h>
	12	#include <net/netlink.h>
	13	#include <crypto/internal/skcipher.h>
	14	#include <crypto/internal/rng.h>
	15	#include <crypto/akcipher.h>
	16	#include <crypto/kpp.h>
	17	#include <crypto/internal/cryptouser.h>
	18
	19	#include "internal.h"
	20
	21	#define null_terminated(x) (strnlen(x, sizeof(x)) < sizeof(x))
	22
	23	static DEFINE_MUTEX(crypto_cfg_mutex);
	24
	25	extern struct sock *crypto_nlsk;
	26
	27	struct crypto_dump_info {
	28	struct sk_buff *in_skb;
	29	struct sk_buff *out_skb;
	30	u32 nlmsg_seq;
	31	u16 nlmsg_flags;
	32	};
	33
	34	static int crypto_report_aead(struct sk_buff skb, struct crypto_alg alg)
	35	{
	36	struct crypto_stat raead;
	37	u64 v64;
	38	u32 v32;
	39
9f4debe3 CL	40	memset(&raead, 0, sizeof(raead));
9f4debe3 CL	41
cac5818c CL	42	strncpy(raead.type, "aead", sizeof(raead.type));
	43
	44	v32 = atomic_read(&alg->encrypt_cnt);
	45	raead.stat_encrypt_cnt = v32;
	46	v64 = atomic64_read(&alg->encrypt_tlen);
	47	raead.stat_encrypt_tlen = v64;
	48	v32 = atomic_read(&alg->decrypt_cnt);
	49	raead.stat_decrypt_cnt = v32;
	50	v64 = atomic64_read(&alg->decrypt_tlen);
	51	raead.stat_decrypt_tlen = v64;
	52	v32 = atomic_read(&alg->aead_err_cnt);
	53	raead.stat_aead_err_cnt = v32;
	54
	55	if (nla_put(skb, CRYPTOCFGA_STAT_AEAD,
	56	sizeof(struct crypto_stat), &raead))
	57	goto nla_put_failure;
	58	return 0;
	59
	60	nla_put_failure:
	61	return -EMSGSIZE;
	62	}
	63
	64	static int crypto_report_cipher(struct sk_buff skb, struct crypto_alg alg)
	65	{
	66	struct crypto_stat rcipher;
	67	u64 v64;
	68	u32 v32;
	69
9f4debe3 CL	70	memset(&rcipher, 0, sizeof(rcipher));
9f4debe3 CL	71
cac5818c CL	72	strlcpy(rcipher.type, "cipher", sizeof(rcipher.type));
	73
	74	v32 = atomic_read(&alg->encrypt_cnt);
	75	rcipher.stat_encrypt_cnt = v32;
	76	v64 = atomic64_read(&alg->encrypt_tlen);
	77	rcipher.stat_encrypt_tlen = v64;
	78	v32 = atomic_read(&alg->decrypt_cnt);
	79	rcipher.stat_decrypt_cnt = v32;
	80	v64 = atomic64_read(&alg->decrypt_tlen);
	81	rcipher.stat_decrypt_tlen = v64;
	82	v32 = atomic_read(&alg->cipher_err_cnt);
	83	rcipher.stat_cipher_err_cnt = v32;
	84
	85	if (nla_put(skb, CRYPTOCFGA_STAT_CIPHER,
	86	sizeof(struct crypto_stat), &rcipher))
	87	goto nla_put_failure;
	88	return 0;
	89
	90	nla_put_failure:
	91	return -EMSGSIZE;
	92	}
	93
	94	static int crypto_report_comp(struct sk_buff skb, struct crypto_alg alg)
	95	{
	96	struct crypto_stat rcomp;
	97	u64 v64;
	98	u32 v32;
	99
9f4debe3 CL	100	memset(&rcomp, 0, sizeof(rcomp));
9f4debe3 CL	101
cac5818c CL	102	strlcpy(rcomp.type, "compression", sizeof(rcomp.type));
	103	v32 = atomic_read(&alg->compress_cnt);
	104	rcomp.stat_compress_cnt = v32;
	105	v64 = atomic64_read(&alg->compress_tlen);
	106	rcomp.stat_compress_tlen = v64;
	107	v32 = atomic_read(&alg->decompress_cnt);
	108	rcomp.stat_decompress_cnt = v32;
	109	v64 = atomic64_read(&alg->decompress_tlen);
	110	rcomp.stat_decompress_tlen = v64;
	111	v32 = atomic_read(&alg->cipher_err_cnt);
	112	rcomp.stat_compress_err_cnt = v32;
	113
	114	if (nla_put(skb, CRYPTOCFGA_STAT_COMPRESS,
	115	sizeof(struct crypto_stat), &rcomp))
	116	goto nla_put_failure;
	117	return 0;
	118
	119	nla_put_failure:
	120	return -EMSGSIZE;
	121	}
	122
	123	static int crypto_report_acomp(struct sk_buff skb, struct crypto_alg alg)
	124	{
	125	struct crypto_stat racomp;
	126	u64 v64;
	127	u32 v32;
	128
9f4debe3 CL	129	memset(&racomp, 0, sizeof(racomp));
9f4debe3 CL	130
cac5818c CL	131	strlcpy(racomp.type, "acomp", sizeof(racomp.type));
	132	v32 = atomic_read(&alg->compress_cnt);
	133	racomp.stat_compress_cnt = v32;
	134	v64 = atomic64_read(&alg->compress_tlen);
	135	racomp.stat_compress_tlen = v64;
	136	v32 = atomic_read(&alg->decompress_cnt);
	137	racomp.stat_decompress_cnt = v32;
	138	v64 = atomic64_read(&alg->decompress_tlen);
	139	racomp.stat_decompress_tlen = v64;
	140	v32 = atomic_read(&alg->cipher_err_cnt);
	141	racomp.stat_compress_err_cnt = v32;
	142
	143	if (nla_put(skb, CRYPTOCFGA_STAT_ACOMP,
	144	sizeof(struct crypto_stat), &racomp))
	145	goto nla_put_failure;
	146	return 0;
	147
	148	nla_put_failure:
	149	return -EMSGSIZE;
	150	}
	151
	152	static int crypto_report_akcipher(struct sk_buff skb, struct crypto_alg alg)
	153	{
	154	struct crypto_stat rakcipher;
	155	u64 v64;
	156	u32 v32;
	157
9f4debe3 CL	158	memset(&rakcipher, 0, sizeof(rakcipher));
9f4debe3 CL	159
cac5818c CL	160	strncpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
	161	v32 = atomic_read(&alg->encrypt_cnt);
	162	rakcipher.stat_encrypt_cnt = v32;
	163	v64 = atomic64_read(&alg->encrypt_tlen);
	164	rakcipher.stat_encrypt_tlen = v64;
	165	v32 = atomic_read(&alg->decrypt_cnt);
	166	rakcipher.stat_decrypt_cnt = v32;
	167	v64 = atomic64_read(&alg->decrypt_tlen);
	168	rakcipher.stat_decrypt_tlen = v64;
	169	v32 = atomic_read(&alg->sign_cnt);
	170	rakcipher.stat_sign_cnt = v32;
	171	v32 = atomic_read(&alg->verify_cnt);
	172	rakcipher.stat_verify_cnt = v32;
	173	v32 = atomic_read(&alg->akcipher_err_cnt);
	174	rakcipher.stat_akcipher_err_cnt = v32;
	175
	176	if (nla_put(skb, CRYPTOCFGA_STAT_AKCIPHER,
	177	sizeof(struct crypto_stat), &rakcipher))
	178	goto nla_put_failure;
	179	return 0;
	180
	181	nla_put_failure:
	182	return -EMSGSIZE;
	183	}
	184
	185	static int crypto_report_kpp(struct sk_buff skb, struct crypto_alg alg)
	186	{
	187	struct crypto_stat rkpp;
	188	u32 v;
	189
9f4debe3 CL	190	memset(&rkpp, 0, sizeof(rkpp));
9f4debe3 CL	191
cac5818c CL	192	strlcpy(rkpp.type, "kpp", sizeof(rkpp.type));
	193
	194	v = atomic_read(&alg->setsecret_cnt);
	195	rkpp.stat_setsecret_cnt = v;
	196	v = atomic_read(&alg->generate_public_key_cnt);
	197	rkpp.stat_generate_public_key_cnt = v;
	198	v = atomic_read(&alg->compute_shared_secret_cnt);
	199	rkpp.stat_compute_shared_secret_cnt = v;
	200	v = atomic_read(&alg->kpp_err_cnt);
	201	rkpp.stat_kpp_err_cnt = v;
	202
	203	if (nla_put(skb, CRYPTOCFGA_STAT_KPP,
	204	sizeof(struct crypto_stat), &rkpp))
	205	goto nla_put_failure;
	206	return 0;
	207
	208	nla_put_failure:
	209	return -EMSGSIZE;
	210	}
	211
	212	static int crypto_report_ahash(struct sk_buff skb, struct crypto_alg alg)
	213	{
	214	struct crypto_stat rhash;
	215	u64 v64;
	216	u32 v32;
	217
9f4debe3 CL	218	memset(&rhash, 0, sizeof(rhash));
9f4debe3 CL	219
cac5818c CL	220	strncpy(rhash.type, "ahash", sizeof(rhash.type));
	221
	222	v32 = atomic_read(&alg->hash_cnt);
	223	rhash.stat_hash_cnt = v32;
	224	v64 = atomic64_read(&alg->hash_tlen);
	225	rhash.stat_hash_tlen = v64;
	226	v32 = atomic_read(&alg->hash_err_cnt);
	227	rhash.stat_hash_err_cnt = v32;
	228
	229	if (nla_put(skb, CRYPTOCFGA_STAT_HASH,
	230	sizeof(struct crypto_stat), &rhash))
	231	goto nla_put_failure;
	232	return 0;
	233
	234	nla_put_failure:
	235	return -EMSGSIZE;
	236	}
	237
	238	static int crypto_report_shash(struct sk_buff skb, struct crypto_alg alg)
	239	{
	240	struct crypto_stat rhash;
	241	u64 v64;
	242	u32 v32;
	243
9f4debe3 CL	244	memset(&rhash, 0, sizeof(rhash));
9f4debe3 CL	245
cac5818c CL	246	strncpy(rhash.type, "shash", sizeof(rhash.type));
	247
	248	v32 = atomic_read(&alg->hash_cnt);
	249	rhash.stat_hash_cnt = v32;
	250	v64 = atomic64_read(&alg->hash_tlen);
	251	rhash.stat_hash_tlen = v64;
	252	v32 = atomic_read(&alg->hash_err_cnt);
	253	rhash.stat_hash_err_cnt = v32;
	254
	255	if (nla_put(skb, CRYPTOCFGA_STAT_HASH,
	256	sizeof(struct crypto_stat), &rhash))
	257	goto nla_put_failure;
	258	return 0;
	259
	260	nla_put_failure:
	261	return -EMSGSIZE;
	262	}
	263
	264	static int crypto_report_rng(struct sk_buff skb, struct crypto_alg alg)
	265	{
	266	struct crypto_stat rrng;
	267	u64 v64;
	268	u32 v32;
	269
9f4debe3 CL	270	memset(&rrng, 0, sizeof(rrng));
9f4debe3 CL	271
cac5818c CL	272	strncpy(rrng.type, "rng", sizeof(rrng.type));
	273
	274	v32 = atomic_read(&alg->generate_cnt);
	275	rrng.stat_generate_cnt = v32;
	276	v64 = atomic64_read(&alg->generate_tlen);
	277	rrng.stat_generate_tlen = v64;
	278	v32 = atomic_read(&alg->seed_cnt);
	279	rrng.stat_seed_cnt = v32;
	280	v32 = atomic_read(&alg->hash_err_cnt);
	281	rrng.stat_rng_err_cnt = v32;
	282
	283	if (nla_put(skb, CRYPTOCFGA_STAT_RNG,
	284	sizeof(struct crypto_stat), &rrng))
	285	goto nla_put_failure;
	286	return 0;
	287
	288	nla_put_failure:
	289	return -EMSGSIZE;
	290	}
	291
	292	static int crypto_reportstat_one(struct crypto_alg *alg,
	293	struct crypto_user_alg *ualg,
	294	struct sk_buff *skb)
	295	{
9f4debe3 CL	296	memset(ualg, 0, sizeof(*ualg));
9f4debe3 CL	297
cac5818c CL	298	strlcpy(ualg->cru_name, alg->cra_name, sizeof(ualg->cru_name));
	299	strlcpy(ualg->cru_driver_name, alg->cra_driver_name,
	300	sizeof(ualg->cru_driver_name));
	301	strlcpy(ualg->cru_module_name, module_name(alg->cra_module),
	302	sizeof(ualg->cru_module_name));
	303
	304	ualg->cru_type = 0;
	305	ualg->cru_mask = 0;
	306	ualg->cru_flags = alg->cra_flags;
	307	ualg->cru_refcnt = refcount_read(&alg->cra_refcnt);
	308
	309	if (nla_put_u32(skb, CRYPTOCFGA_PRIORITY_VAL, alg->cra_priority))
	310	goto nla_put_failure;
	311	if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
	312	struct crypto_stat rl;
	313
9f4debe3	314	memset(&rl, 0, sizeof(rl));
cac5818c CL	315	strlcpy(rl.type, "larval", sizeof(rl.type));
	316	if (nla_put(skb, CRYPTOCFGA_STAT_LARVAL,
	317	sizeof(struct crypto_stat), &rl))
	318	goto nla_put_failure;
	319	goto out;
	320	}
	321
	322	switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK \| CRYPTO_ALG_LARVAL)) {
	323	case CRYPTO_ALG_TYPE_AEAD:
	324	if (crypto_report_aead(skb, alg))
	325	goto nla_put_failure;
	326	break;
	327	case CRYPTO_ALG_TYPE_SKCIPHER:
	328	if (crypto_report_cipher(skb, alg))
	329	goto nla_put_failure;
	330	break;
	331	case CRYPTO_ALG_TYPE_BLKCIPHER:
	332	if (crypto_report_cipher(skb, alg))
	333	goto nla_put_failure;
	334	break;
	335	case CRYPTO_ALG_TYPE_CIPHER:
	336	if (crypto_report_cipher(skb, alg))
	337	goto nla_put_failure;
	338	break;
	339	case CRYPTO_ALG_TYPE_COMPRESS:
	340	if (crypto_report_comp(skb, alg))
	341	goto nla_put_failure;
	342	break;
	343	case CRYPTO_ALG_TYPE_ACOMPRESS:
	344	if (crypto_report_acomp(skb, alg))
	345	goto nla_put_failure;
	346	break;
	347	case CRYPTO_ALG_TYPE_SCOMPRESS:
	348	if (crypto_report_acomp(skb, alg))
	349	goto nla_put_failure;
	350	break;
	351	case CRYPTO_ALG_TYPE_AKCIPHER:
	352	if (crypto_report_akcipher(skb, alg))
	353	goto nla_put_failure;
	354	break;
	355	case CRYPTO_ALG_TYPE_KPP:
	356	if (crypto_report_kpp(skb, alg))
	357	goto nla_put_failure;
	358	break;
	359	case CRYPTO_ALG_TYPE_AHASH:
	360	if (crypto_report_ahash(skb, alg))
	361	goto nla_put_failure;
	362	break;
	363	case CRYPTO_ALG_TYPE_HASH:
	364	if (crypto_report_shash(skb, alg))
	365	goto nla_put_failure;
	366	break;
	367	case CRYPTO_ALG_TYPE_RNG:
	368	if (crypto_report_rng(skb, alg))
	369	goto nla_put_failure;
	370	break;
	371	default:
	372	pr_err("ERROR: Unhandled alg %d in %s\n",
	373	alg->cra_flags & (CRYPTO_ALG_TYPE_MASK \| CRYPTO_ALG_LARVAL),
	374	__func__);
	375	}
	376
	377	out:
	378	return 0;
379
380	nla_put_failure:
381	return -EMSGSIZE;
382	}
383
384	static int crypto_reportstat_alg(struct crypto_alg *alg,
385	struct crypto_dump_info *info)
386	{
387	struct sk_buff *in_skb = info->in_skb;
388	struct sk_buff *skb = info->out_skb;
389	struct nlmsghdr *nlh;
390	struct crypto_user_alg *ualg;
391	int err = 0;
392
393	nlh = nlmsg_put(skb, NETLINK_CB(in_skb).portid, info->nlmsg_seq,
394	CRYPTO_MSG_GETSTAT, sizeof(*ualg), info->nlmsg_flags);
395	if (!nlh) {
396	err = -EMSGSIZE;
397	goto out;
398	}
399
400	ualg = nlmsg_data(nlh);
401
402	err = crypto_reportstat_one(alg, ualg, skb);
403	if (err) {
404	nlmsg_cancel(skb, nlh);
405	goto out;
406	}
407
408	nlmsg_end(skb, nlh);
409
410	out:
411	return err;
412	}
413
414	int crypto_reportstat(struct sk_buff in_skb, struct nlmsghdr in_nlh,
415	struct nlattr **attrs)
416	{
417	struct crypto_user_alg *p = nlmsg_data(in_nlh);
418	struct crypto_alg *alg;
419	struct sk_buff *skb;
420	struct crypto_dump_info info;
421	int err;
422
423	if (!null_terminated(p->cru_name) \|\| !null_terminated(p->cru_driver_name))
424	return -EINVAL;
425
426	alg = crypto_alg_match(p, 0);
427	if (!alg)
428	return -ENOENT;
429
430	err = -ENOMEM;
431	skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
432	if (!skb)
433	goto drop_alg;
434
435	info.in_skb = in_skb;
436	info.out_skb = skb;
437	info.nlmsg_seq = in_nlh->nlmsg_seq;
438	info.nlmsg_flags = 0;
439
440	err = crypto_reportstat_alg(alg, &info);
441
442	drop_alg:
443	crypto_mod_put(alg);
444
445	if (err)
446	return err;
447
448	return nlmsg_unicast(crypto_nlsk, skb, NETLINK_CB(in_skb).portid);
449	}
450
451	int crypto_dump_reportstat(struct sk_buff skb, struct netlink_callback cb)
452	{
453	struct crypto_alg *alg;
454	struct crypto_dump_info info;
455	int err;
456
457	if (cb->args[0])
458	goto out;
459
460	cb->args[0] = 1;
461
462	info.in_skb = cb->skb;
463	info.out_skb = skb;
464	info.nlmsg_seq = cb->nlh->nlmsg_seq;
465	info.nlmsg_flags = NLM_F_MULTI;
466
467	list_for_each_entry(alg, &crypto_alg_list, cra_list) {
468	err = crypto_reportstat_alg(alg, &info);
469	if (err)
470	goto out_err;
471	}
472
473	out:
474	return skb->len;
475	out_err:
476	return err;
477	}
478
479	int crypto_dump_reportstat_done(struct netlink_callback *cb)
480	{
481	return 0;
482	}
483
484	MODULE_LICENSE("GPL");