[linux-2.6-block.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 <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_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);
}

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