[thirdparty/linux.git] / crypto / crypto_user_stat.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Crypto user configuration API.
 *
 * Copyright (C) 2017-2018 Corentin Labbe <clabbe@baylibre.com>
 *
 */

#include <linux/crypto.h>
#include <linux/cryptouser.h>
#include <linux/sched.h>
#include <net/netlink.h>
#include <net/sock.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))

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_aead raead;

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

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

	raead.stat_encrypt_cnt = atomic64_read(&alg->stats.aead.encrypt_cnt);
	raead.stat_encrypt_tlen = atomic64_read(&alg->stats.aead.encrypt_tlen);
	raead.stat_decrypt_cnt = atomic64_read(&alg->stats.aead.decrypt_cnt);
	raead.stat_decrypt_tlen = atomic64_read(&alg->stats.aead.decrypt_tlen);
	raead.stat_err_cnt = atomic64_read(&alg->stats.aead.err_cnt);

	return nla_put(skb, CRYPTOCFGA_STAT_AEAD, sizeof(raead), &raead);
}

static int crypto_report_cipher(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat_cipher rcipher;

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

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

	rcipher.stat_encrypt_cnt = atomic64_read(&alg->stats.cipher.encrypt_cnt);
	rcipher.stat_encrypt_tlen = atomic64_read(&alg->stats.cipher.encrypt_tlen);
	rcipher.stat_decrypt_cnt =  atomic64_read(&alg->stats.cipher.decrypt_cnt);
	rcipher.stat_decrypt_tlen = atomic64_read(&alg->stats.cipher.decrypt_tlen);
	rcipher.stat_err_cnt =  atomic64_read(&alg->stats.cipher.err_cnt);

	return nla_put(skb, CRYPTOCFGA_STAT_CIPHER, sizeof(rcipher), &rcipher);
}

static int crypto_report_comp(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat_compress rcomp;

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

	strscpy(rcomp.type, "compression", sizeof(rcomp.type));
	rcomp.stat_compress_cnt = atomic64_read(&alg->stats.compress.compress_cnt);
	rcomp.stat_compress_tlen = atomic64_read(&alg->stats.compress.compress_tlen);
	rcomp.stat_decompress_cnt = atomic64_read(&alg->stats.compress.decompress_cnt);
	rcomp.stat_decompress_tlen = atomic64_read(&alg->stats.compress.decompress_tlen);
	rcomp.stat_err_cnt = atomic64_read(&alg->stats.compress.err_cnt);

	return nla_put(skb, CRYPTOCFGA_STAT_COMPRESS, sizeof(rcomp), &rcomp);
}

static int crypto_report_acomp(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat_compress racomp;

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

	strscpy(racomp.type, "acomp", sizeof(racomp.type));
	racomp.stat_compress_cnt = atomic64_read(&alg->stats.compress.compress_cnt);
	racomp.stat_compress_tlen = atomic64_read(&alg->stats.compress.compress_tlen);
	racomp.stat_decompress_cnt =  atomic64_read(&alg->stats.compress.decompress_cnt);
	racomp.stat_decompress_tlen = atomic64_read(&alg->stats.compress.decompress_tlen);
	racomp.stat_err_cnt = atomic64_read(&alg->stats.compress.err_cnt);

	return nla_put(skb, CRYPTOCFGA_STAT_ACOMP, sizeof(racomp), &racomp);
}

static int crypto_report_akcipher(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat_akcipher rakcipher;

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

	strscpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
	rakcipher.stat_encrypt_cnt = atomic64_read(&alg->stats.akcipher.encrypt_cnt);
	rakcipher.stat_encrypt_tlen = atomic64_read(&alg->stats.akcipher.encrypt_tlen);
	rakcipher.stat_decrypt_cnt = atomic64_read(&alg->stats.akcipher.decrypt_cnt);
	rakcipher.stat_decrypt_tlen = atomic64_read(&alg->stats.akcipher.decrypt_tlen);
	rakcipher.stat_sign_cnt = atomic64_read(&alg->stats.akcipher.sign_cnt);
	rakcipher.stat_verify_cnt = atomic64_read(&alg->stats.akcipher.verify_cnt);
	rakcipher.stat_err_cnt = atomic64_read(&alg->stats.akcipher.err_cnt);

	return nla_put(skb, CRYPTOCFGA_STAT_AKCIPHER,
		       sizeof(rakcipher), &rakcipher);
}

static int crypto_report_kpp(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat_kpp rkpp;

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

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

	rkpp.stat_setsecret_cnt = atomic64_read(&alg->stats.kpp.setsecret_cnt);
	rkpp.stat_generate_public_key_cnt = atomic64_read(&alg->stats.kpp.generate_public_key_cnt);
	rkpp.stat_compute_shared_secret_cnt = atomic64_read(&alg->stats.kpp.compute_shared_secret_cnt);
	rkpp.stat_err_cnt = atomic64_read(&alg->stats.kpp.err_cnt);

	return nla_put(skb, CRYPTOCFGA_STAT_KPP, sizeof(rkpp), &rkpp);
}

static int crypto_report_ahash(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat_hash rhash;

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

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

	rhash.stat_hash_cnt = atomic64_read(&alg->stats.hash.hash_cnt);
	rhash.stat_hash_tlen = atomic64_read(&alg->stats.hash.hash_tlen);
	rhash.stat_err_cnt = atomic64_read(&alg->stats.hash.err_cnt);

	return nla_put(skb, CRYPTOCFGA_STAT_HASH, sizeof(rhash), &rhash);
}

static int crypto_report_shash(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat_hash rhash;

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

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

	rhash.stat_hash_cnt =  atomic64_read(&alg->stats.hash.hash_cnt);
	rhash.stat_hash_tlen = atomic64_read(&alg->stats.hash.hash_tlen);
	rhash.stat_err_cnt = atomic64_read(&alg->stats.hash.err_cnt);

	return nla_put(skb, CRYPTOCFGA_STAT_HASH, sizeof(rhash), &rhash);
}

static int crypto_report_rng(struct sk_buff *skb, struct crypto_alg *alg)
{
	struct crypto_stat_rng rrng;

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

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

	rrng.stat_generate_cnt = atomic64_read(&alg->stats.rng.generate_cnt);
	rrng.stat_generate_tlen = atomic64_read(&alg->stats.rng.generate_tlen);
	rrng.stat_seed_cnt = atomic64_read(&alg->stats.rng.seed_cnt);
	rrng.stat_err_cnt = atomic64_read(&alg->stats.rng.err_cnt);

	return nla_put(skb, CRYPTOCFGA_STAT_RNG, sizeof(rrng), &rrng);
}

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

	strscpy(ualg->cru_name, alg->cra_name, sizeof(ualg->cru_name));
	strscpy(ualg->cru_driver_name, alg->cra_driver_name,
		sizeof(ualg->cru_driver_name));
	strscpy(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_larval rl;

		memset(&rl, 0, sizeof(rl));
		strscpy(rl.type, "larval", sizeof(rl.type));
		if (nla_put(skb, CRYPTOCFGA_STAT_LARVAL, sizeof(rl), &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_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 net *net = sock_net(in_skb->sk);
	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) {
		kfree_skb(skb);
		return err;
	}

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

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 <clabbe@baylibre.com>
	6	*
	7	*/
	8
	9	#include <linux/crypto.h>
	10	#include <linux/cryptouser.h>
	11	#include <linux/sched.h>
	12	#include <net/netlink.h>
91b05a7e	13	#include <net/sock.h>
cac5818c CL	14	#include <crypto/internal/skcipher.h>
	15	#include <crypto/internal/rng.h>
	16	#include <crypto/akcipher.h>
	17	#include <crypto/kpp.h>
	18	#include <crypto/internal/cryptouser.h>
	19
	20	#include "internal.h"
	21
	22	#define null_terminated(x) (strnlen(x, sizeof(x)) < sizeof(x))
	23
cac5818c CL	24	struct crypto_dump_info {
	25	struct sk_buff *in_skb;
	26	struct sk_buff *out_skb;
	27	u32 nlmsg_seq;
	28	u16 nlmsg_flags;
	29	};
	30
	31	static int crypto_report_aead(struct sk_buff skb, struct crypto_alg alg)
	32	{
7f0a9d5c	33	struct crypto_stat_aead raead;
cac5818c	34
9f4debe3 CL	35	memset(&raead, 0, sizeof(raead));
9f4debe3 CL	36
37db69e0	37	strscpy(raead.type, "aead", sizeof(raead.type));
cac5818c	38
17c18f9e CL	39	raead.stat_encrypt_cnt = atomic64_read(&alg->stats.aead.encrypt_cnt);
	40	raead.stat_encrypt_tlen = atomic64_read(&alg->stats.aead.encrypt_tlen);
	41	raead.stat_decrypt_cnt = atomic64_read(&alg->stats.aead.decrypt_cnt);
	42	raead.stat_decrypt_tlen = atomic64_read(&alg->stats.aead.decrypt_tlen);
44f13133	43	raead.stat_err_cnt = atomic64_read(&alg->stats.aead.err_cnt);
cac5818c	44
37db69e0	45	return nla_put(skb, CRYPTOCFGA_STAT_AEAD, sizeof(raead), &raead);
cac5818c CL	46	}
	47
	48	static int crypto_report_cipher(struct sk_buff skb, struct crypto_alg alg)
	49	{
7f0a9d5c	50	struct crypto_stat_cipher rcipher;
cac5818c	51
9f4debe3 CL	52	memset(&rcipher, 0, sizeof(rcipher));
9f4debe3 CL	53
37db69e0	54	strscpy(rcipher.type, "cipher", sizeof(rcipher.type));
cac5818c	55
17c18f9e CL	56	rcipher.stat_encrypt_cnt = atomic64_read(&alg->stats.cipher.encrypt_cnt);
	57	rcipher.stat_encrypt_tlen = atomic64_read(&alg->stats.cipher.encrypt_tlen);
	58	rcipher.stat_decrypt_cnt = atomic64_read(&alg->stats.cipher.decrypt_cnt);
	59	rcipher.stat_decrypt_tlen = atomic64_read(&alg->stats.cipher.decrypt_tlen);
44f13133	60	rcipher.stat_err_cnt = atomic64_read(&alg->stats.cipher.err_cnt);
cac5818c	61
37db69e0	62	return nla_put(skb, CRYPTOCFGA_STAT_CIPHER, sizeof(rcipher), &rcipher);
cac5818c CL	63	}
	64
	65	static int crypto_report_comp(struct sk_buff skb, struct crypto_alg alg)
	66	{
7f0a9d5c	67	struct crypto_stat_compress rcomp;
cac5818c	68
9f4debe3 CL	69	memset(&rcomp, 0, sizeof(rcomp));
9f4debe3 CL	70
37db69e0	71	strscpy(rcomp.type, "compression", sizeof(rcomp.type));
17c18f9e CL	72	rcomp.stat_compress_cnt = atomic64_read(&alg->stats.compress.compress_cnt);
	73	rcomp.stat_compress_tlen = atomic64_read(&alg->stats.compress.compress_tlen);
	74	rcomp.stat_decompress_cnt = atomic64_read(&alg->stats.compress.decompress_cnt);
	75	rcomp.stat_decompress_tlen = atomic64_read(&alg->stats.compress.decompress_tlen);
44f13133	76	rcomp.stat_err_cnt = atomic64_read(&alg->stats.compress.err_cnt);
cac5818c	77
37db69e0	78	return nla_put(skb, CRYPTOCFGA_STAT_COMPRESS, sizeof(rcomp), &rcomp);
cac5818c CL	79	}
	80
	81	static int crypto_report_acomp(struct sk_buff skb, struct crypto_alg alg)
	82	{
7f0a9d5c	83	struct crypto_stat_compress racomp;
cac5818c	84
9f4debe3 CL	85	memset(&racomp, 0, sizeof(racomp));
9f4debe3 CL	86
37db69e0	87	strscpy(racomp.type, "acomp", sizeof(racomp.type));
17c18f9e CL	88	racomp.stat_compress_cnt = atomic64_read(&alg->stats.compress.compress_cnt);
	89	racomp.stat_compress_tlen = atomic64_read(&alg->stats.compress.compress_tlen);
	90	racomp.stat_decompress_cnt = atomic64_read(&alg->stats.compress.decompress_cnt);
	91	racomp.stat_decompress_tlen = atomic64_read(&alg->stats.compress.decompress_tlen);
44f13133	92	racomp.stat_err_cnt = atomic64_read(&alg->stats.compress.err_cnt);
cac5818c	93
37db69e0	94	return nla_put(skb, CRYPTOCFGA_STAT_ACOMP, sizeof(racomp), &racomp);
cac5818c CL	95	}
	96
	97	static int crypto_report_akcipher(struct sk_buff skb, struct crypto_alg alg)
	98	{
7f0a9d5c	99	struct crypto_stat_akcipher rakcipher;
cac5818c	100
9f4debe3 CL	101	memset(&rakcipher, 0, sizeof(rakcipher));
9f4debe3 CL	102
37db69e0	103	strscpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
17c18f9e CL	104	rakcipher.stat_encrypt_cnt = atomic64_read(&alg->stats.akcipher.encrypt_cnt);
	105	rakcipher.stat_encrypt_tlen = atomic64_read(&alg->stats.akcipher.encrypt_tlen);
	106	rakcipher.stat_decrypt_cnt = atomic64_read(&alg->stats.akcipher.decrypt_cnt);
	107	rakcipher.stat_decrypt_tlen = atomic64_read(&alg->stats.akcipher.decrypt_tlen);
	108	rakcipher.stat_sign_cnt = atomic64_read(&alg->stats.akcipher.sign_cnt);
	109	rakcipher.stat_verify_cnt = atomic64_read(&alg->stats.akcipher.verify_cnt);
44f13133	110	rakcipher.stat_err_cnt = atomic64_read(&alg->stats.akcipher.err_cnt);
cac5818c	111
37db69e0 EB	112	return nla_put(skb, CRYPTOCFGA_STAT_AKCIPHER,
37db69e0 EB	113	sizeof(rakcipher), &rakcipher);
cac5818c CL	114	}
	115
	116	static int crypto_report_kpp(struct sk_buff skb, struct crypto_alg alg)
	117	{
7f0a9d5c	118	struct crypto_stat_kpp rkpp;
cac5818c	119
9f4debe3 CL	120	memset(&rkpp, 0, sizeof(rkpp));
9f4debe3 CL	121
37db69e0	122	strscpy(rkpp.type, "kpp", sizeof(rkpp.type));
cac5818c	123
17c18f9e CL	124	rkpp.stat_setsecret_cnt = atomic64_read(&alg->stats.kpp.setsecret_cnt);
	125	rkpp.stat_generate_public_key_cnt = atomic64_read(&alg->stats.kpp.generate_public_key_cnt);
	126	rkpp.stat_compute_shared_secret_cnt = atomic64_read(&alg->stats.kpp.compute_shared_secret_cnt);
44f13133	127	rkpp.stat_err_cnt = atomic64_read(&alg->stats.kpp.err_cnt);
cac5818c	128
37db69e0	129	return nla_put(skb, CRYPTOCFGA_STAT_KPP, sizeof(rkpp), &rkpp);
cac5818c CL	130	}
	131
	132	static int crypto_report_ahash(struct sk_buff skb, struct crypto_alg alg)
	133	{
7f0a9d5c	134	struct crypto_stat_hash rhash;
cac5818c	135
9f4debe3 CL	136	memset(&rhash, 0, sizeof(rhash));
9f4debe3 CL	137
37db69e0	138	strscpy(rhash.type, "ahash", sizeof(rhash.type));
cac5818c	139
17c18f9e CL	140	rhash.stat_hash_cnt = atomic64_read(&alg->stats.hash.hash_cnt);
17c18f9e CL	141	rhash.stat_hash_tlen = atomic64_read(&alg->stats.hash.hash_tlen);
44f13133	142	rhash.stat_err_cnt = atomic64_read(&alg->stats.hash.err_cnt);
cac5818c	143
37db69e0	144	return nla_put(skb, CRYPTOCFGA_STAT_HASH, sizeof(rhash), &rhash);
cac5818c CL	145	}
	146
	147	static int crypto_report_shash(struct sk_buff skb, struct crypto_alg alg)
	148	{
7f0a9d5c	149	struct crypto_stat_hash rhash;
cac5818c	150
9f4debe3 CL	151	memset(&rhash, 0, sizeof(rhash));
9f4debe3 CL	152
37db69e0	153	strscpy(rhash.type, "shash", sizeof(rhash.type));
cac5818c	154
17c18f9e CL	155	rhash.stat_hash_cnt = atomic64_read(&alg->stats.hash.hash_cnt);
17c18f9e CL	156	rhash.stat_hash_tlen = atomic64_read(&alg->stats.hash.hash_tlen);
44f13133	157	rhash.stat_err_cnt = atomic64_read(&alg->stats.hash.err_cnt);
cac5818c	158
37db69e0	159	return nla_put(skb, CRYPTOCFGA_STAT_HASH, sizeof(rhash), &rhash);
cac5818c CL	160	}
	161
	162	static int crypto_report_rng(struct sk_buff skb, struct crypto_alg alg)
	163	{
7f0a9d5c	164	struct crypto_stat_rng rrng;
cac5818c	165
9f4debe3 CL	166	memset(&rrng, 0, sizeof(rrng));
9f4debe3 CL	167
37db69e0	168	strscpy(rrng.type, "rng", sizeof(rrng.type));
cac5818c	169
17c18f9e CL	170	rrng.stat_generate_cnt = atomic64_read(&alg->stats.rng.generate_cnt);
	171	rrng.stat_generate_tlen = atomic64_read(&alg->stats.rng.generate_tlen);
	172	rrng.stat_seed_cnt = atomic64_read(&alg->stats.rng.seed_cnt);
44f13133	173	rrng.stat_err_cnt = atomic64_read(&alg->stats.rng.err_cnt);
cac5818c	174
37db69e0	175	return nla_put(skb, CRYPTOCFGA_STAT_RNG, sizeof(rrng), &rrng);
cac5818c CL	176	}
	177
	178	static int crypto_reportstat_one(struct crypto_alg *alg,
	179	struct crypto_user_alg *ualg,
	180	struct sk_buff *skb)
	181	{
9f4debe3 CL	182	memset(ualg, 0, sizeof(*ualg));
9f4debe3 CL	183
37db69e0 EB	184	strscpy(ualg->cru_name, alg->cra_name, sizeof(ualg->cru_name));
37db69e0 EB	185	strscpy(ualg->cru_driver_name, alg->cra_driver_name,
cac5818c	186	sizeof(ualg->cru_driver_name));
37db69e0	187	strscpy(ualg->cru_module_name, module_name(alg->cra_module),
cac5818c CL	188	sizeof(ualg->cru_module_name));
	189
	190	ualg->cru_type = 0;
	191	ualg->cru_mask = 0;
	192	ualg->cru_flags = alg->cra_flags;
	193	ualg->cru_refcnt = refcount_read(&alg->cra_refcnt);
	194
	195	if (nla_put_u32(skb, CRYPTOCFGA_PRIORITY_VAL, alg->cra_priority))
	196	goto nla_put_failure;
	197	if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
7f0a9d5c	198	struct crypto_stat_larval rl;
cac5818c	199
9f4debe3	200	memset(&rl, 0, sizeof(rl));
37db69e0 EB	201	strscpy(rl.type, "larval", sizeof(rl.type));
37db69e0 EB	202	if (nla_put(skb, CRYPTOCFGA_STAT_LARVAL, sizeof(rl), &rl))
cac5818c CL	203	goto nla_put_failure;
	204	goto out;
	205	}
	206
	207	switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK \| CRYPTO_ALG_LARVAL)) {
	208	case CRYPTO_ALG_TYPE_AEAD:
	209	if (crypto_report_aead(skb, alg))
	210	goto nla_put_failure;
	211	break;
	212	case CRYPTO_ALG_TYPE_SKCIPHER:
	213	if (crypto_report_cipher(skb, alg))
	214	goto nla_put_failure;
	215	break;
cac5818c CL	216	case CRYPTO_ALG_TYPE_CIPHER:
	217	if (crypto_report_cipher(skb, alg))
	218	goto nla_put_failure;
	219	break;
	220	case CRYPTO_ALG_TYPE_COMPRESS:
	221	if (crypto_report_comp(skb, alg))
	222	goto nla_put_failure;
	223	break;
	224	case CRYPTO_ALG_TYPE_ACOMPRESS:
	225	if (crypto_report_acomp(skb, alg))
	226	goto nla_put_failure;
	227	break;
	228	case CRYPTO_ALG_TYPE_SCOMPRESS:
	229	if (crypto_report_acomp(skb, alg))
	230	goto nla_put_failure;
	231	break;
	232	case CRYPTO_ALG_TYPE_AKCIPHER:
	233	if (crypto_report_akcipher(skb, alg))
	234	goto nla_put_failure;
	235	break;
	236	case CRYPTO_ALG_TYPE_KPP:
	237	if (crypto_report_kpp(skb, alg))
	238	goto nla_put_failure;
	239	break;
	240	case CRYPTO_ALG_TYPE_AHASH:
	241	if (crypto_report_ahash(skb, alg))
	242	goto nla_put_failure;
	243	break;
	244	case CRYPTO_ALG_TYPE_HASH:
	245	if (crypto_report_shash(skb, alg))
	246	goto nla_put_failure;
	247	break;
	248	case CRYPTO_ALG_TYPE_RNG:
	249	if (crypto_report_rng(skb, alg))
	250	goto nla_put_failure;
	251	break;
	252	default:
	253	pr_err("ERROR: Unhandled alg %d in %s\n",
	254	alg->cra_flags & (CRYPTO_ALG_TYPE_MASK \| CRYPTO_ALG_LARVAL),
	255	__func__);
	256	}
	257
	258	out:
	259	return 0;
	260
	261	nla_put_failure:
	262	return -EMSGSIZE;
	263	}
	264
	265	static int crypto_reportstat_alg(struct crypto_alg *alg,
	266	struct crypto_dump_info *info)
	267	{
	268	struct sk_buff *in_skb = info->in_skb;
	269	struct sk_buff *skb = info->out_skb;
	270	struct nlmsghdr *nlh;
	271	struct crypto_user_alg *ualg;
	272	int err = 0;
	273
	274	nlh = nlmsg_put(skb, NETLINK_CB(in_skb).portid, info->nlmsg_seq,
	275	CRYPTO_MSG_GETSTAT, sizeof(*ualg), info->nlmsg_flags);
	276	if (!nlh) {
	277	err = -EMSGSIZE;
	278	goto out;
	279	}
280
281	ualg = nlmsg_data(nlh);
282
283	err = crypto_reportstat_one(alg, ualg, skb);
284	if (err) {
285	nlmsg_cancel(skb, nlh);
286	goto out;
287	}
288
289	nlmsg_end(skb, nlh);
290
291	out:
292	return err;
293	}
294
295	int crypto_reportstat(struct sk_buff in_skb, struct nlmsghdr in_nlh,
296	struct nlattr **attrs)
297	{
91b05a7e	298	struct net *net = sock_net(in_skb->sk);
cac5818c CL	299	struct crypto_user_alg *p = nlmsg_data(in_nlh);
	300	struct crypto_alg *alg;
	301	struct sk_buff *skb;
	302	struct crypto_dump_info info;
	303	int err;
	304
	305	if (!null_terminated(p->cru_name) \|\| !null_terminated(p->cru_driver_name))
	306	return -EINVAL;
	307
	308	alg = crypto_alg_match(p, 0);
	309	if (!alg)
	310	return -ENOENT;
	311
	312	err = -ENOMEM;
	313	skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
	314	if (!skb)
	315	goto drop_alg;
	316
	317	info.in_skb = in_skb;
	318	info.out_skb = skb;
	319	info.nlmsg_seq = in_nlh->nlmsg_seq;
	320	info.nlmsg_flags = 0;
	321
	322	err = crypto_reportstat_alg(alg, &info);
	323
	324	drop_alg:
	325	crypto_mod_put(alg);
	326
c03b04dc NE	327	if (err) {
c03b04dc NE	328	kfree_skb(skb);
cac5818c	329	return err;
c03b04dc	330	}
cac5818c	331
91b05a7e	332	return nlmsg_unicast(net->crypto_nlsk, skb, NETLINK_CB(in_skb).portid);
cac5818c CL	333	}
cac5818c CL	334
cac5818c	335	MODULE_LICENSE("GPL");