Revert "crypto: remove CONFIG_CRYPTO_STATS"

This reverts commit 2beb81fb.

While removing CONFIG_CRYPTO_STATS is a worthy goal, this also
removed unrelated infrastructure such as crypto_comp_alg_common.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

arch/s390/configs/debug_defconfig

@@ -766,6 +766,7 @@ CONFIG_CRYPTO_USER_API_HASH=m
 CONFIG_CRYPTO_USER_API_SKCIPHER=m
 CONFIG_CRYPTO_USER_API_RNG=m
 CONFIG_CRYPTO_USER_API_AEAD=m
+CONFIG_CRYPTO_STATS=y
 CONFIG_CRYPTO_CRC32_S390=y
 CONFIG_CRYPTO_SHA512_S390=m
 CONFIG_CRYPTO_SHA1_S390=m

arch/s390/configs/defconfig

@@ -752,6 +752,7 @@ CONFIG_CRYPTO_USER_API_HASH=m
 CONFIG_CRYPTO_USER_API_SKCIPHER=m
 CONFIG_CRYPTO_USER_API_RNG=m
 CONFIG_CRYPTO_USER_API_AEAD=m
+CONFIG_CRYPTO_STATS=y
 CONFIG_CRYPTO_CRC32_S390=y
 CONFIG_CRYPTO_SHA512_S390=m
 CONFIG_CRYPTO_SHA1_S390=m

crypto/Kconfig

@@ -1456,6 +1456,26 @@ config CRYPTO_USER_API_ENABLE_OBSOLETE
 	  already been phased out from internal use by the kernel, and are
 	  only useful for userspace clients that still rely on them.
 
+config CRYPTO_STATS
+	bool "Crypto usage statistics"
+	depends on CRYPTO_USER
+	help
+	  Enable the gathering of crypto stats.
+
+	  Enabling this option reduces the performance of the crypto API.  It
+	  should only be enabled when there is actually a use case for it.
+
+	  This collects data sizes, numbers of requests, and numbers
+	  of errors processed by:
+	  - AEAD ciphers (encrypt, decrypt)
+	  - asymmetric key ciphers (encrypt, decrypt, verify, sign)
+	  - symmetric key ciphers (encrypt, decrypt)
+	  - compression algorithms (compress, decompress)
+	  - hash algorithms (hash)
+	  - key-agreement protocol primitives (setsecret, generate
+	    public key, compute shared secret)
+	  - RNG (generate, seed)
+
 endmenu
 
 config CRYPTO_HASH_INFO

crypto/Makefile

@@ -69,6 +69,8 @@ cryptomgr-y := algboss.o testmgr.o
 
 obj-$(CONFIG_CRYPTO_MANAGER2) += cryptomgr.o
 obj-$(CONFIG_CRYPTO_USER) += crypto_user.o
+crypto_user-y := crypto_user_base.o
+crypto_user-$(CONFIG_CRYPTO_STATS) += crypto_user_stat.o
 obj-$(CONFIG_CRYPTO_CMAC) += cmac.o
 obj-$(CONFIG_CRYPTO_HMAC) += hmac.o
 obj-$(CONFIG_CRYPTO_VMAC) += vmac.o

crypto/acompress.c

@@ -25,7 +25,7 @@ static const struct crypto_type crypto_acomp_type;
 
 static inline struct acomp_alg *__crypto_acomp_alg(struct crypto_alg *alg)
 {
-	return container_of(alg, struct acomp_alg, base);
+	return container_of(alg, struct acomp_alg, calg.base);
 }
 
 static inline struct acomp_alg *crypto_acomp_alg(struct crypto_acomp *tfm)
@@ -93,6 +93,32 @@ static unsigned int crypto_acomp_extsize(struct crypto_alg *alg)
 	return extsize;
 }
 
+static inline int __crypto_acomp_report_stat(struct sk_buff *skb,
+					     struct crypto_alg *alg)
+{
+	struct comp_alg_common *calg = __crypto_comp_alg_common(alg);
+	struct crypto_istat_compress *istat = comp_get_stat(calg);
+	struct crypto_stat_compress racomp;
+
+	memset(&racomp, 0, sizeof(racomp));
+
+	strscpy(racomp.type, "acomp", sizeof(racomp.type));
+	racomp.stat_compress_cnt = atomic64_read(&istat->compress_cnt);
+	racomp.stat_compress_tlen = atomic64_read(&istat->compress_tlen);
+	racomp.stat_decompress_cnt =  atomic64_read(&istat->decompress_cnt);
+	racomp.stat_decompress_tlen = atomic64_read(&istat->decompress_tlen);
+	racomp.stat_err_cnt = atomic64_read(&istat->err_cnt);
+
+	return nla_put(skb, CRYPTOCFGA_STAT_ACOMP, sizeof(racomp), &racomp);
+}
+
+#ifdef CONFIG_CRYPTO_STATS
+int crypto_acomp_report_stat(struct sk_buff *skb, struct crypto_alg *alg)
+{
+	return __crypto_acomp_report_stat(skb, alg);
+}
+#endif
+
 static const struct crypto_type crypto_acomp_type = {
 	.extsize = crypto_acomp_extsize,
 	.init_tfm = crypto_acomp_init_tfm,
@@ -101,6 +127,9 @@ static const struct crypto_type crypto_acomp_type = {
 #endif
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_acomp_report,
+#endif
+#ifdef CONFIG_CRYPTO_STATS
+	.report_stat = crypto_acomp_report_stat,
 #endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_ACOMPRESS_MASK,
@@ -153,12 +182,24 @@ void acomp_request_free(struct acomp_req *req)
 }
 EXPORT_SYMBOL_GPL(acomp_request_free);
 
-int crypto_register_acomp(struct acomp_alg *alg)
+void comp_prepare_alg(struct comp_alg_common *alg)
 {
+	struct crypto_istat_compress *istat = comp_get_stat(alg);
 	struct crypto_alg *base = &alg->base;
 
-	base->cra_type = &crypto_acomp_type;
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		memset(istat, 0, sizeof(*istat));
+}
+
+int crypto_register_acomp(struct acomp_alg *alg)
+{
+	struct crypto_alg *base = &alg->calg.base;
+
+	comp_prepare_alg(&alg->calg);
+
+	base->cra_type = &crypto_acomp_type;
 	base->cra_flags |= CRYPTO_ALG_TYPE_ACOMPRESS;
 
 	return crypto_register_alg(base);

crypto/aead.c

@@ -20,6 +20,15 @@
 
 #include "internal.h"
 
+static inline struct crypto_istat_aead *aead_get_stat(struct aead_alg *alg)
+{
+#ifdef CONFIG_CRYPTO_STATS
+	return &alg->stat;
+#else
+	return NULL;
+#endif
+}
+
 static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key,
 			    unsigned int keylen)
 {
@@ -81,28 +90,62 @@ int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
 }
 EXPORT_SYMBOL_GPL(crypto_aead_setauthsize);
 
+static inline int crypto_aead_errstat(struct crypto_istat_aead *istat, int err)
+{
+	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
+		return err;
+
+	if (err && err != -EINPROGRESS && err != -EBUSY)
+		atomic64_inc(&istat->err_cnt);
+
+	return err;
+}
+
 int crypto_aead_encrypt(struct aead_request *req)
 {
 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
+	struct aead_alg *alg = crypto_aead_alg(aead);
+	struct crypto_istat_aead *istat;
+	int ret;
+
+	istat = aead_get_stat(alg);
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		atomic64_inc(&istat->encrypt_cnt);
+		atomic64_add(req->cryptlen, &istat->encrypt_tlen);
+	}
 
 	if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
-		return -ENOKEY;
+		ret = -ENOKEY;
+	else
+		ret = alg->encrypt(req);
 
-	return crypto_aead_alg(aead)->encrypt(req);
+	return crypto_aead_errstat(istat, ret);
 }
 EXPORT_SYMBOL_GPL(crypto_aead_encrypt);
 
 int crypto_aead_decrypt(struct aead_request *req)
 {
 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
+	struct aead_alg *alg = crypto_aead_alg(aead);
+	struct crypto_istat_aead *istat;
+	int ret;
 
-	if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
-		return -ENOKEY;
+	istat = aead_get_stat(alg);
 
-	if (req->cryptlen < crypto_aead_authsize(aead))
-		return -EINVAL;
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		atomic64_inc(&istat->encrypt_cnt);
+		atomic64_add(req->cryptlen, &istat->encrypt_tlen);
+	}
+
+	if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
+		ret = -ENOKEY;
+	else if (req->cryptlen < crypto_aead_authsize(aead))
+		ret = -EINVAL;
+	else
+		ret = alg->decrypt(req);
 
-	return crypto_aead_alg(aead)->decrypt(req);
+	return crypto_aead_errstat(istat, ret);
 }
 EXPORT_SYMBOL_GPL(crypto_aead_decrypt);
 
@@ -172,6 +215,26 @@ static void crypto_aead_free_instance(struct crypto_instance *inst)
 	aead->free(aead);
 }
 
+static int __maybe_unused crypto_aead_report_stat(
+	struct sk_buff *skb, struct crypto_alg *alg)
+{
+	struct aead_alg *aead = container_of(alg, struct aead_alg, base);
+	struct crypto_istat_aead *istat = aead_get_stat(aead);
+	struct crypto_stat_aead raead;
+
+	memset(&raead, 0, sizeof(raead));
+
+	strscpy(raead.type, "aead", sizeof(raead.type));
+
+	raead.stat_encrypt_cnt = atomic64_read(&istat->encrypt_cnt);
+	raead.stat_encrypt_tlen = atomic64_read(&istat->encrypt_tlen);
+	raead.stat_decrypt_cnt = atomic64_read(&istat->decrypt_cnt);
+	raead.stat_decrypt_tlen = atomic64_read(&istat->decrypt_tlen);
+	raead.stat_err_cnt = atomic64_read(&istat->err_cnt);
+
+	return nla_put(skb, CRYPTOCFGA_STAT_AEAD, sizeof(raead), &raead);
+}
+
 static const struct crypto_type crypto_aead_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_aead_init_tfm,
@@ -181,6 +244,9 @@ static const struct crypto_type crypto_aead_type = {
 #endif
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_aead_report,
+#endif
+#ifdef CONFIG_CRYPTO_STATS
+	.report_stat = crypto_aead_report_stat,
 #endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,
@@ -211,6 +277,7 @@ EXPORT_SYMBOL_GPL(crypto_has_aead);
 
 static int aead_prepare_alg(struct aead_alg *alg)
 {
+	struct crypto_istat_aead *istat = aead_get_stat(alg);
 	struct crypto_alg *base = &alg->base;
 
 	if (max3(alg->maxauthsize, alg->ivsize, alg->chunksize) >
@@ -224,6 +291,9 @@ static int aead_prepare_alg(struct aead_alg *alg)
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_AEAD;
 
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		memset(istat, 0, sizeof(*istat));
+
 	return 0;
 }
 

crypto/ahash.c

@@ -27,6 +27,22 @@
 
 #define CRYPTO_ALG_TYPE_AHASH_MASK	0x0000000e
 
+static inline struct crypto_istat_hash *ahash_get_stat(struct ahash_alg *alg)
+{
+	return hash_get_stat(&alg->halg);
+}
+
+static inline int crypto_ahash_errstat(struct ahash_alg *alg, int err)
+{
+	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
+		return err;
+
+	if (err && err != -EINPROGRESS && err != -EBUSY)
+		atomic64_inc(&ahash_get_stat(alg)->err_cnt);
+
+	return err;
+}
+
 /*
  * For an ahash tfm that is using an shash algorithm (instead of an ahash
  * algorithm), this returns the underlying shash tfm.
@@ -328,47 +344,75 @@ static void ahash_restore_req(struct ahash_request *req, int err)
 int crypto_ahash_update(struct ahash_request *req)
 {
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct ahash_alg *alg;
 
 	if (likely(tfm->using_shash))
 		return shash_ahash_update(req, ahash_request_ctx(req));
 
-	return crypto_ahash_alg(tfm)->update(req);
+	alg = crypto_ahash_alg(tfm);
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		atomic64_add(req->nbytes, &ahash_get_stat(alg)->hash_tlen);
+	return crypto_ahash_errstat(alg, alg->update(req));
 }
 EXPORT_SYMBOL_GPL(crypto_ahash_update);
 
 int crypto_ahash_final(struct ahash_request *req)
 {
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct ahash_alg *alg;
 
 	if (likely(tfm->using_shash))
 		return crypto_shash_final(ahash_request_ctx(req), req->result);
 
-	return crypto_ahash_alg(tfm)->final(req);
+	alg = crypto_ahash_alg(tfm);
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		atomic64_inc(&ahash_get_stat(alg)->hash_cnt);
+	return crypto_ahash_errstat(alg, alg->final(req));
 }
 EXPORT_SYMBOL_GPL(crypto_ahash_final);
 
 int crypto_ahash_finup(struct ahash_request *req)
 {
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct ahash_alg *alg;
 
 	if (likely(tfm->using_shash))
 		return shash_ahash_finup(req, ahash_request_ctx(req));
 
-	return crypto_ahash_alg(tfm)->finup(req);
+	alg = crypto_ahash_alg(tfm);
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_hash *istat = ahash_get_stat(alg);
+
+		atomic64_inc(&istat->hash_cnt);
+		atomic64_add(req->nbytes, &istat->hash_tlen);
+	}
+	return crypto_ahash_errstat(alg, alg->finup(req));
 }
 EXPORT_SYMBOL_GPL(crypto_ahash_finup);
 
 int crypto_ahash_digest(struct ahash_request *req)
 {
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct ahash_alg *alg;
+	int err;
 
 	if (likely(tfm->using_shash))
 		return shash_ahash_digest(req, prepare_shash_desc(req, tfm));
 
+	alg = crypto_ahash_alg(tfm);
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_hash *istat = ahash_get_stat(alg);
+
+		atomic64_inc(&istat->hash_cnt);
+		atomic64_add(req->nbytes, &istat->hash_tlen);
+	}
+
 	if (crypto_ahash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
-		return -ENOKEY;
+		err = -ENOKEY;
+	else
+		err = alg->digest(req);
 
-	return crypto_ahash_alg(tfm)->digest(req);
+	return crypto_ahash_errstat(alg, err);
 }
 EXPORT_SYMBOL_GPL(crypto_ahash_digest);
 
@@ -527,6 +571,12 @@ static void crypto_ahash_show(struct seq_file *m, struct crypto_alg *alg)
 		   __crypto_hash_alg_common(alg)->digestsize);
 }
 
+static int __maybe_unused crypto_ahash_report_stat(
+	struct sk_buff *skb, struct crypto_alg *alg)
+{
+	return crypto_hash_report_stat(skb, alg, "ahash");
+}
+
 static const struct crypto_type crypto_ahash_type = {
 	.extsize = crypto_ahash_extsize,
 	.init_tfm = crypto_ahash_init_tfm,
@@ -536,6 +586,9 @@ static const struct crypto_type crypto_ahash_type = {
 #endif
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_ahash_report,
+#endif
+#ifdef CONFIG_CRYPTO_STATS
+	.report_stat = crypto_ahash_report_stat,
 #endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_AHASH_MASK,

crypto/akcipher.c

@@ -70,6 +70,30 @@ static void crypto_akcipher_free_instance(struct crypto_instance *inst)
 	akcipher->free(akcipher);
 }
 
+static int __maybe_unused crypto_akcipher_report_stat(
+	struct sk_buff *skb, struct crypto_alg *alg)
+{
+	struct akcipher_alg *akcipher = __crypto_akcipher_alg(alg);
+	struct crypto_istat_akcipher *istat;
+	struct crypto_stat_akcipher rakcipher;
+
+	istat = akcipher_get_stat(akcipher);
+
+	memset(&rakcipher, 0, sizeof(rakcipher));
+
+	strscpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
+	rakcipher.stat_encrypt_cnt = atomic64_read(&istat->encrypt_cnt);
+	rakcipher.stat_encrypt_tlen = atomic64_read(&istat->encrypt_tlen);
+	rakcipher.stat_decrypt_cnt = atomic64_read(&istat->decrypt_cnt);
+	rakcipher.stat_decrypt_tlen = atomic64_read(&istat->decrypt_tlen);
+	rakcipher.stat_sign_cnt = atomic64_read(&istat->sign_cnt);
+	rakcipher.stat_verify_cnt = atomic64_read(&istat->verify_cnt);
+	rakcipher.stat_err_cnt = atomic64_read(&istat->err_cnt);
+
+	return nla_put(skb, CRYPTOCFGA_STAT_AKCIPHER,
+		       sizeof(rakcipher), &rakcipher);
+}
+
 static const struct crypto_type crypto_akcipher_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_akcipher_init_tfm,
@@ -79,6 +103,9 @@ static const struct crypto_type crypto_akcipher_type = {
 #endif
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_akcipher_report,
+#endif
+#ifdef CONFIG_CRYPTO_STATS
+	.report_stat = crypto_akcipher_report_stat,
 #endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_AHASH_MASK,
@@ -104,11 +131,15 @@ EXPORT_SYMBOL_GPL(crypto_alloc_akcipher);
 
 static void akcipher_prepare_alg(struct akcipher_alg *alg)
 {
+	struct crypto_istat_akcipher *istat = akcipher_get_stat(alg);
 	struct crypto_alg *base = &alg->base;
 
 	base->cra_type = &crypto_akcipher_type;
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_AKCIPHER;
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		memset(istat, 0, sizeof(*istat));
 }
 
 static int akcipher_default_op(struct akcipher_request *req)

crypto/compress.h

@@ -12,10 +12,15 @@
 #include "internal.h"
 
 struct acomp_req;
+struct comp_alg_common;
 struct sk_buff;
 
 int crypto_init_scomp_ops_async(struct crypto_tfm *tfm);
 struct acomp_req *crypto_acomp_scomp_alloc_ctx(struct acomp_req *req);
 void crypto_acomp_scomp_free_ctx(struct acomp_req *req);
 
+int crypto_acomp_report_stat(struct sk_buff *skb, struct crypto_alg *alg);
+
+void comp_prepare_alg(struct comp_alg_common *alg);
+
 #endif	/* _LOCAL_CRYPTO_COMPRESS_H */

crypto/crypto_user.c → crypto/crypto_user_base.c

@@ -18,6 +18,7 @@
 #include <crypto/internal/rng.h>
 #include <crypto/akcipher.h>
 #include <crypto/kpp.h>
+#include <crypto/internal/cryptouser.h>
 
 #include "internal.h"
 
@@ -32,7 +33,7 @@ struct crypto_dump_info {
 	u16 nlmsg_flags;
 };
 
-static struct crypto_alg *crypto_alg_match(struct crypto_user_alg *p, int exact)
+struct crypto_alg *crypto_alg_match(struct crypto_user_alg *p, int exact)
 {
 	struct crypto_alg *q, *alg = NULL;
 
@@ -386,13 +387,6 @@ static int crypto_del_rng(struct sk_buff *skb, struct nlmsghdr *nlh,
 	return crypto_del_default_rng();
 }
 
-static int crypto_reportstat(struct sk_buff *in_skb, struct nlmsghdr *in_nlh,
-			     struct nlattr **attrs)
-{
-	/* No longer supported */
-	return -ENOTSUPP;
-}
-
 #define MSGSIZE(type) sizeof(struct type)
 
 static const int crypto_msg_min[CRYPTO_NR_MSGTYPES] = {

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 <crypto/algapi.h>
+#include <crypto/internal/cryptouser.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <net/netlink.h>
+#include <net/sock.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_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));
+
+	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));
+
+	return nla_put(skb, CRYPTOCFGA_STAT_COMPRESS, sizeof(rcomp), &rcomp);
+}
+
+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;
+	}
+
+	if (alg->cra_type && alg->cra_type->report_stat) {
+		if (alg->cra_type->report_stat(skb, alg))
+			goto nla_put_failure;
+		goto out;
+	}
+
+	switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) {
+	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;
+	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");

crypto/hash.h

@@ -8,9 +8,39 @@
 #define _LOCAL_CRYPTO_HASH_H
 
 #include <crypto/internal/hash.h>
+#include <linux/cryptouser.h>
 
 #include "internal.h"
 
+static inline struct crypto_istat_hash *hash_get_stat(
+	struct hash_alg_common *alg)
+{
+#ifdef CONFIG_CRYPTO_STATS
+	return &alg->stat;
+#else
+	return NULL;
+#endif
+}
+
+static inline int crypto_hash_report_stat(struct sk_buff *skb,
+					  struct crypto_alg *alg,
+					  const char *type)
+{
+	struct hash_alg_common *halg = __crypto_hash_alg_common(alg);
+	struct crypto_istat_hash *istat = hash_get_stat(halg);
+	struct crypto_stat_hash rhash;
+
+	memset(&rhash, 0, sizeof(rhash));
+
+	strscpy(rhash.type, type, sizeof(rhash.type));
+
+	rhash.stat_hash_cnt = atomic64_read(&istat->hash_cnt);
+	rhash.stat_hash_tlen = atomic64_read(&istat->hash_tlen);
+	rhash.stat_err_cnt = atomic64_read(&istat->err_cnt);
+
+	return nla_put(skb, CRYPTOCFGA_STAT_HASH, sizeof(rhash), &rhash);
+}
+
 extern const struct crypto_type crypto_shash_type;
 
 int hash_prepare_alg(struct hash_alg_common *alg);

crypto/kpp.c

@@ -66,6 +66,29 @@ static void crypto_kpp_free_instance(struct crypto_instance *inst)
 	kpp->free(kpp);
 }
 
+static int __maybe_unused crypto_kpp_report_stat(
+	struct sk_buff *skb, struct crypto_alg *alg)
+{
+	struct kpp_alg *kpp = __crypto_kpp_alg(alg);
+	struct crypto_istat_kpp *istat;
+	struct crypto_stat_kpp rkpp;
+
+	istat = kpp_get_stat(kpp);
+
+	memset(&rkpp, 0, sizeof(rkpp));
+
+	strscpy(rkpp.type, "kpp", sizeof(rkpp.type));
+
+	rkpp.stat_setsecret_cnt = atomic64_read(&istat->setsecret_cnt);
+	rkpp.stat_generate_public_key_cnt =
+		atomic64_read(&istat->generate_public_key_cnt);
+	rkpp.stat_compute_shared_secret_cnt =
+		atomic64_read(&istat->compute_shared_secret_cnt);
+	rkpp.stat_err_cnt = atomic64_read(&istat->err_cnt);
+
+	return nla_put(skb, CRYPTOCFGA_STAT_KPP, sizeof(rkpp), &rkpp);
+}
+
 static const struct crypto_type crypto_kpp_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_kpp_init_tfm,
@@ -75,6 +98,9 @@ static const struct crypto_type crypto_kpp_type = {
 #endif
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_kpp_report,
+#endif
+#ifdef CONFIG_CRYPTO_STATS
+	.report_stat = crypto_kpp_report_stat,
 #endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,
@@ -105,11 +131,15 @@ EXPORT_SYMBOL_GPL(crypto_has_kpp);
 
 static void kpp_prepare_alg(struct kpp_alg *alg)
 {
+	struct crypto_istat_kpp *istat = kpp_get_stat(alg);
 	struct crypto_alg *base = &alg->base;
 
 	base->cra_type = &crypto_kpp_type;
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_KPP;
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		memset(istat, 0, sizeof(*istat));
 }
 
 int crypto_register_kpp(struct kpp_alg *alg)

crypto/lskcipher.c

@@ -29,6 +29,25 @@ static inline struct lskcipher_alg *__crypto_lskcipher_alg(
 	return container_of(alg, struct lskcipher_alg, co.base);
 }
 
+static inline struct crypto_istat_cipher *lskcipher_get_stat(
+	struct lskcipher_alg *alg)
+{
+	return skcipher_get_stat_common(&alg->co);
+}
+
+static inline int crypto_lskcipher_errstat(struct lskcipher_alg *alg, int err)
+{
+	struct crypto_istat_cipher *istat = lskcipher_get_stat(alg);
+
+	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
+		return err;
+
+	if (err)
+		atomic64_inc(&istat->err_cnt);
+
+	return err;
+}
+
 static int lskcipher_setkey_unaligned(struct crypto_lskcipher *tfm,
 				      const u8 *key, unsigned int keylen)
 {
@@ -128,13 +147,20 @@ static int crypto_lskcipher_crypt(struct crypto_lskcipher *tfm, const u8 *src,
 					       u32 flags))
 {
 	unsigned long alignmask = crypto_lskcipher_alignmask(tfm);
+	struct lskcipher_alg *alg = crypto_lskcipher_alg(tfm);
+	int ret;
 
 	if (((unsigned long)src | (unsigned long)dst | (unsigned long)iv) &
-	    alignmask)
-		return crypto_lskcipher_crypt_unaligned(tfm, src, dst, len, iv,
-							crypt);
+	    alignmask) {
+		ret = crypto_lskcipher_crypt_unaligned(tfm, src, dst, len, iv,
+						       crypt);
+		goto out;
+	}
 
-	return crypt(tfm, src, dst, len, iv, CRYPTO_LSKCIPHER_FLAG_FINAL);
+	ret = crypt(tfm, src, dst, len, iv, CRYPTO_LSKCIPHER_FLAG_FINAL);
+
+out:
+	return crypto_lskcipher_errstat(alg, ret);
 }
 
 int crypto_lskcipher_encrypt(struct crypto_lskcipher *tfm, const u8 *src,
@@ -142,6 +168,13 @@ int crypto_lskcipher_encrypt(struct crypto_lskcipher *tfm, const u8 *src,
 {
 	struct lskcipher_alg *alg = crypto_lskcipher_alg(tfm);
 
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_cipher *istat = lskcipher_get_stat(alg);
+
+		atomic64_inc(&istat->encrypt_cnt);
+		atomic64_add(len, &istat->encrypt_tlen);
+	}
+
 	return crypto_lskcipher_crypt(tfm, src, dst, len, iv, alg->encrypt);
 }
 EXPORT_SYMBOL_GPL(crypto_lskcipher_encrypt);
@@ -151,6 +184,13 @@ int crypto_lskcipher_decrypt(struct crypto_lskcipher *tfm, const u8 *src,
 {
 	struct lskcipher_alg *alg = crypto_lskcipher_alg(tfm);
 
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_cipher *istat = lskcipher_get_stat(alg);
+
+		atomic64_inc(&istat->decrypt_cnt);
+		atomic64_add(len, &istat->decrypt_tlen);
+	}
+
 	return crypto_lskcipher_crypt(tfm, src, dst, len, iv, alg->decrypt);
 }
 EXPORT_SYMBOL_GPL(crypto_lskcipher_decrypt);
@@ -282,6 +322,28 @@ static int __maybe_unused crypto_lskcipher_report(
 		       sizeof(rblkcipher), &rblkcipher);
 }
 
+static int __maybe_unused crypto_lskcipher_report_stat(
+	struct sk_buff *skb, struct crypto_alg *alg)
+{
+	struct lskcipher_alg *skcipher = __crypto_lskcipher_alg(alg);
+	struct crypto_istat_cipher *istat;
+	struct crypto_stat_cipher rcipher;
+
+	istat = lskcipher_get_stat(skcipher);
+
+	memset(&rcipher, 0, sizeof(rcipher));
+
+	strscpy(rcipher.type, "cipher", sizeof(rcipher.type));
+
+	rcipher.stat_encrypt_cnt = atomic64_read(&istat->encrypt_cnt);
+	rcipher.stat_encrypt_tlen = atomic64_read(&istat->encrypt_tlen);
+	rcipher.stat_decrypt_cnt =  atomic64_read(&istat->decrypt_cnt);
+	rcipher.stat_decrypt_tlen = atomic64_read(&istat->decrypt_tlen);
+	rcipher.stat_err_cnt =  atomic64_read(&istat->err_cnt);
+
+	return nla_put(skb, CRYPTOCFGA_STAT_CIPHER, sizeof(rcipher), &rcipher);
+}
+
 static const struct crypto_type crypto_lskcipher_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_lskcipher_init_tfm,
@@ -291,6 +353,9 @@ static const struct crypto_type crypto_lskcipher_type = {
 #endif
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_lskcipher_report,
+#endif
+#ifdef CONFIG_CRYPTO_STATS
+	.report_stat = crypto_lskcipher_report_stat,
 #endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,

crypto/rng.c

@@ -30,24 +30,30 @@ static int crypto_default_rng_refcnt;
 
 int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, unsigned int slen)
 {
+	struct rng_alg *alg = crypto_rng_alg(tfm);
 	u8 *buf = NULL;
 	int err;
 
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		atomic64_inc(&rng_get_stat(alg)->seed_cnt);
+
 	if (!seed && slen) {
 		buf = kmalloc(slen, GFP_KERNEL);
+		err = -ENOMEM;
 		if (!buf)
-			return -ENOMEM;
+			goto out;
 
 		err = get_random_bytes_wait(buf, slen);
 		if (err)
-			goto out;
+			goto free_buf;
 		seed = buf;
 	}
 
-	err = crypto_rng_alg(tfm)->seed(tfm, seed, slen);
-out:
+	err = alg->seed(tfm, seed, slen);
+free_buf:
 	kfree_sensitive(buf);
-	return err;
+out:
+	return crypto_rng_errstat(alg, err);
 }
 EXPORT_SYMBOL_GPL(crypto_rng_reset);
 
@@ -85,6 +91,27 @@ static void crypto_rng_show(struct seq_file *m, struct crypto_alg *alg)
 	seq_printf(m, "seedsize     : %u\n", seedsize(alg));
 }
 
+static int __maybe_unused crypto_rng_report_stat(
+	struct sk_buff *skb, struct crypto_alg *alg)
+{
+	struct rng_alg *rng = __crypto_rng_alg(alg);
+	struct crypto_istat_rng *istat;
+	struct crypto_stat_rng rrng;
+
+	istat = rng_get_stat(rng);
+
+	memset(&rrng, 0, sizeof(rrng));
+
+	strscpy(rrng.type, "rng", sizeof(rrng.type));
+
+	rrng.stat_generate_cnt = atomic64_read(&istat->generate_cnt);
+	rrng.stat_generate_tlen = atomic64_read(&istat->generate_tlen);
+	rrng.stat_seed_cnt = atomic64_read(&istat->seed_cnt);
+	rrng.stat_err_cnt = atomic64_read(&istat->err_cnt);
+
+	return nla_put(skb, CRYPTOCFGA_STAT_RNG, sizeof(rrng), &rrng);
+}
+
 static const struct crypto_type crypto_rng_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_rng_init_tfm,
@@ -93,6 +120,9 @@ static const struct crypto_type crypto_rng_type = {
 #endif
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_rng_report,
+#endif
+#ifdef CONFIG_CRYPTO_STATS
+	.report_stat = crypto_rng_report_stat,
 #endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,
@@ -169,6 +199,7 @@ EXPORT_SYMBOL_GPL(crypto_del_default_rng);
 
 int crypto_register_rng(struct rng_alg *alg)
 {
+	struct crypto_istat_rng *istat = rng_get_stat(alg);
 	struct crypto_alg *base = &alg->base;
 
 	if (alg->seedsize > PAGE_SIZE / 8)
@@ -178,6 +209,9 @@ int crypto_register_rng(struct rng_alg *alg)
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_RNG;
 
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		memset(istat, 0, sizeof(*istat));
+
 	return crypto_register_alg(base);
 }
 EXPORT_SYMBOL_GPL(crypto_register_rng);

crypto/scompress.c

@@ -270,6 +270,9 @@ static const struct crypto_type crypto_scomp_type = {
 #endif
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_scomp_report,
+#endif
+#ifdef CONFIG_CRYPTO_STATS
+	.report_stat = crypto_acomp_report_stat,
 #endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,
@@ -279,10 +282,11 @@ static const struct crypto_type crypto_scomp_type = {
 
 int crypto_register_scomp(struct scomp_alg *alg)
 {
-	struct crypto_alg *base = &alg->base;
+	struct crypto_alg *base = &alg->calg.base;
+
+	comp_prepare_alg(&alg->calg);
 
 	base->cra_type = &crypto_scomp_type;
-	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_SCOMPRESS;
 
 	return crypto_register_alg(base);

crypto/shash.c

@@ -16,6 +16,18 @@
 
 #include "hash.h"
 
+static inline struct crypto_istat_hash *shash_get_stat(struct shash_alg *alg)
+{
+	return hash_get_stat(&alg->halg);
+}
+
+static inline int crypto_shash_errstat(struct shash_alg *alg, int err)
+{
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS) && err)
+		atomic64_inc(&shash_get_stat(alg)->err_cnt);
+	return err;
+}
+
 int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
 		    unsigned int keylen)
 {
@@ -49,13 +61,29 @@ EXPORT_SYMBOL_GPL(crypto_shash_setkey);
 int crypto_shash_update(struct shash_desc *desc, const u8 *data,
 			unsigned int len)
 {
-	return crypto_shash_alg(desc->tfm)->update(desc, data, len);
+	struct shash_alg *shash = crypto_shash_alg(desc->tfm);
+	int err;
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		atomic64_add(len, &shash_get_stat(shash)->hash_tlen);
+
+	err = shash->update(desc, data, len);
+
+	return crypto_shash_errstat(shash, err);
 }
 EXPORT_SYMBOL_GPL(crypto_shash_update);
 
 int crypto_shash_final(struct shash_desc *desc, u8 *out)
 {
-	return crypto_shash_alg(desc->tfm)->final(desc, out);
+	struct shash_alg *shash = crypto_shash_alg(desc->tfm);
+	int err;
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		atomic64_inc(&shash_get_stat(shash)->hash_cnt);
+
+	err = shash->final(desc, out);
+
+	return crypto_shash_errstat(shash, err);
 }
 EXPORT_SYMBOL_GPL(crypto_shash_final);
 
@@ -71,7 +99,20 @@ static int shash_default_finup(struct shash_desc *desc, const u8 *data,
 int crypto_shash_finup(struct shash_desc *desc, const u8 *data,
 		       unsigned int len, u8 *out)
 {
-	return crypto_shash_alg(desc->tfm)->finup(desc, data, len, out);
+	struct crypto_shash *tfm = desc->tfm;
+	struct shash_alg *shash = crypto_shash_alg(tfm);
+	int err;
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_hash *istat = shash_get_stat(shash);
+
+		atomic64_inc(&istat->hash_cnt);
+		atomic64_add(len, &istat->hash_tlen);
+	}
+
+	err = shash->finup(desc, data, len, out);
+
+	return crypto_shash_errstat(shash, err);
 }
 EXPORT_SYMBOL_GPL(crypto_shash_finup);
 
@@ -88,11 +129,22 @@ int crypto_shash_digest(struct shash_desc *desc, const u8 *data,
 			unsigned int len, u8 *out)
 {
 	struct crypto_shash *tfm = desc->tfm;
+	struct shash_alg *shash = crypto_shash_alg(tfm);
+	int err;
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_hash *istat = shash_get_stat(shash);
+
+		atomic64_inc(&istat->hash_cnt);
+		atomic64_add(len, &istat->hash_tlen);
+	}
 
 	if (crypto_shash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
-		return -ENOKEY;
+		err = -ENOKEY;
+	else
+		err = shash->digest(desc, data, len, out);
 
-	return crypto_shash_alg(desc->tfm)->digest(desc, data, len, out);
+	return crypto_shash_errstat(shash, err);
 }
 EXPORT_SYMBOL_GPL(crypto_shash_digest);
 
@@ -213,6 +265,12 @@ static void crypto_shash_show(struct seq_file *m, struct crypto_alg *alg)
 	seq_printf(m, "digestsize   : %u\n", salg->digestsize);
 }
 
+static int __maybe_unused crypto_shash_report_stat(
+	struct sk_buff *skb, struct crypto_alg *alg)
+{
+	return crypto_hash_report_stat(skb, alg, "shash");
+}
+
 const struct crypto_type crypto_shash_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_shash_init_tfm,
@@ -222,6 +280,9 @@ const struct crypto_type crypto_shash_type = {
 #endif
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_shash_report,
+#endif
+#ifdef CONFIG_CRYPTO_STATS
+	.report_stat = crypto_shash_report_stat,
 #endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,
@@ -289,6 +350,7 @@ EXPORT_SYMBOL_GPL(crypto_clone_shash);
 
 int hash_prepare_alg(struct hash_alg_common *alg)
 {
+	struct crypto_istat_hash *istat = hash_get_stat(alg);
 	struct crypto_alg *base = &alg->base;
 
 	if (alg->digestsize > HASH_MAX_DIGESTSIZE)
@@ -300,6 +362,9 @@ int hash_prepare_alg(struct hash_alg_common *alg)
 
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		memset(istat, 0, sizeof(*istat));
+
 	return 0;
 }
 

crypto/sig.c

@@ -45,6 +45,16 @@ static int __maybe_unused crypto_sig_report(struct sk_buff *skb,
 	return nla_put(skb, CRYPTOCFGA_REPORT_AKCIPHER, sizeof(rsig), &rsig);
 }
 
+static int __maybe_unused crypto_sig_report_stat(struct sk_buff *skb,
+						 struct crypto_alg *alg)
+{
+	struct crypto_stat_akcipher rsig = {};
+
+	strscpy(rsig.type, "sig", sizeof(rsig.type));
+
+	return nla_put(skb, CRYPTOCFGA_STAT_AKCIPHER, sizeof(rsig), &rsig);
+}
+
 static const struct crypto_type crypto_sig_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_sig_init_tfm,
@@ -53,6 +63,9 @@ static const struct crypto_type crypto_sig_type = {
 #endif
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_sig_report,
+#endif
+#ifdef CONFIG_CRYPTO_STATS
+	.report_stat = crypto_sig_report_stat,
 #endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_SIG_MASK,

crypto/skcipher.c

@@ -89,6 +89,25 @@ static inline struct skcipher_alg *__crypto_skcipher_alg(
 	return container_of(alg, struct skcipher_alg, base);
 }
 
+static inline struct crypto_istat_cipher *skcipher_get_stat(
+	struct skcipher_alg *alg)
+{
+	return skcipher_get_stat_common(&alg->co);
+}
+
+static inline int crypto_skcipher_errstat(struct skcipher_alg *alg, int err)
+{
+	struct crypto_istat_cipher *istat = skcipher_get_stat(alg);
+
+	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
+		return err;
+
+	if (err && err != -EINPROGRESS && err != -EBUSY)
+		atomic64_inc(&istat->err_cnt);
+
+	return err;
+}
+
 static int skcipher_done_slow(struct skcipher_walk *walk, unsigned int bsize)
 {
 	u8 *addr;
@@ -635,12 +654,23 @@ int crypto_skcipher_encrypt(struct skcipher_request *req)
 {
 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
 	struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
+	int ret;
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_cipher *istat = skcipher_get_stat(alg);
+
+		atomic64_inc(&istat->encrypt_cnt);
+		atomic64_add(req->cryptlen, &istat->encrypt_tlen);
+	}
 
 	if (crypto_skcipher_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
-		return -ENOKEY;
-	if (alg->co.base.cra_type != &crypto_skcipher_type)
-		return crypto_lskcipher_encrypt_sg(req);
-	return alg->encrypt(req);
+		ret = -ENOKEY;
+	else if (alg->co.base.cra_type != &crypto_skcipher_type)
+		ret = crypto_lskcipher_encrypt_sg(req);
+	else
+		ret = alg->encrypt(req);
+
+	return crypto_skcipher_errstat(alg, ret);
 }
 EXPORT_SYMBOL_GPL(crypto_skcipher_encrypt);
 
@@ -648,12 +678,23 @@ int crypto_skcipher_decrypt(struct skcipher_request *req)
 {
 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
 	struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
+	int ret;
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_cipher *istat = skcipher_get_stat(alg);
+
+		atomic64_inc(&istat->decrypt_cnt);
+		atomic64_add(req->cryptlen, &istat->decrypt_tlen);
+	}
 
 	if (crypto_skcipher_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
-		return -ENOKEY;
-	if (alg->co.base.cra_type != &crypto_skcipher_type)
-		return crypto_lskcipher_decrypt_sg(req);
-	return alg->decrypt(req);
+		ret = -ENOKEY;
+	else if (alg->co.base.cra_type != &crypto_skcipher_type)
+		ret = crypto_lskcipher_decrypt_sg(req);
+	else
+		ret = alg->decrypt(req);
+
+	return crypto_skcipher_errstat(alg, ret);
 }
 EXPORT_SYMBOL_GPL(crypto_skcipher_decrypt);
 
@@ -805,6 +846,28 @@ static int __maybe_unused crypto_skcipher_report(
 		       sizeof(rblkcipher), &rblkcipher);
 }
 
+static int __maybe_unused crypto_skcipher_report_stat(
+	struct sk_buff *skb, struct crypto_alg *alg)
+{
+	struct skcipher_alg *skcipher = __crypto_skcipher_alg(alg);
+	struct crypto_istat_cipher *istat;
+	struct crypto_stat_cipher rcipher;
+
+	istat = skcipher_get_stat(skcipher);
+
+	memset(&rcipher, 0, sizeof(rcipher));
+
+	strscpy(rcipher.type, "cipher", sizeof(rcipher.type));
+
+	rcipher.stat_encrypt_cnt = atomic64_read(&istat->encrypt_cnt);
+	rcipher.stat_encrypt_tlen = atomic64_read(&istat->encrypt_tlen);
+	rcipher.stat_decrypt_cnt =  atomic64_read(&istat->decrypt_cnt);
+	rcipher.stat_decrypt_tlen = atomic64_read(&istat->decrypt_tlen);
+	rcipher.stat_err_cnt =  atomic64_read(&istat->err_cnt);
+
+	return nla_put(skb, CRYPTOCFGA_STAT_CIPHER, sizeof(rcipher), &rcipher);
+}
+
 static const struct crypto_type crypto_skcipher_type = {
 	.extsize = crypto_skcipher_extsize,
 	.init_tfm = crypto_skcipher_init_tfm,
@@ -814,6 +877,9 @@ static const struct crypto_type crypto_skcipher_type = {
 #endif
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_skcipher_report,
+#endif
+#ifdef CONFIG_CRYPTO_STATS
+	.report_stat = crypto_skcipher_report_stat,
 #endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_SKCIPHER_MASK,
@@ -869,6 +935,7 @@ EXPORT_SYMBOL_GPL(crypto_has_skcipher);
 
 int skcipher_prepare_alg_common(struct skcipher_alg_common *alg)
 {
+	struct crypto_istat_cipher *istat = skcipher_get_stat_common(alg);
 	struct crypto_alg *base = &alg->base;
 
 	if (alg->ivsize > PAGE_SIZE / 8 || alg->chunksize > PAGE_SIZE / 8 ||
@@ -881,6 +948,9 @@ int skcipher_prepare_alg_common(struct skcipher_alg_common *alg)
 
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		memset(istat, 0, sizeof(*istat));
+
 	return 0;
 }
 

crypto/skcipher.h

@@ -10,6 +10,16 @@
 #include <crypto/internal/skcipher.h>
 #include "internal.h"
 
+static inline struct crypto_istat_cipher *skcipher_get_stat_common(
+	struct skcipher_alg_common *alg)
+{
+#ifdef CONFIG_CRYPTO_STATS
+	return &alg->stat;
+#else
+	return NULL;
+#endif
+}
+
 int crypto_lskcipher_encrypt_sg(struct skcipher_request *req);
 int crypto_lskcipher_decrypt_sg(struct skcipher_request *req);
 int crypto_init_lskcipher_ops_sg(struct crypto_tfm *tfm);

include/crypto/acompress.h

@@ -56,6 +56,35 @@ struct crypto_acomp {
 	struct crypto_tfm base;
 };
 
+/*
+ * struct crypto_istat_compress - statistics for compress algorithm
+ * @compress_cnt:	number of compress requests
+ * @compress_tlen:	total data size handled by compress requests
+ * @decompress_cnt:	number of decompress requests
+ * @decompress_tlen:	total data size handled by decompress requests
+ * @err_cnt:		number of error for compress requests
+ */
+struct crypto_istat_compress {
+	atomic64_t compress_cnt;
+	atomic64_t compress_tlen;
+	atomic64_t decompress_cnt;
+	atomic64_t decompress_tlen;
+	atomic64_t err_cnt;
+};
+
+#ifdef CONFIG_CRYPTO_STATS
+#define COMP_ALG_COMMON_STATS struct crypto_istat_compress stat;
+#else
+#define COMP_ALG_COMMON_STATS
+#endif
+
+#define COMP_ALG_COMMON {			\
+	COMP_ALG_COMMON_STATS			\
+						\
+	struct crypto_alg base;			\
+}
+struct comp_alg_common COMP_ALG_COMMON;
+
 /**
  * DOC: Asynchronous Compression API
  *
@@ -103,11 +132,23 @@ static inline struct crypto_tfm *crypto_acomp_tfm(struct crypto_acomp *tfm)
 	return &tfm->base;
 }
 
+static inline struct comp_alg_common *__crypto_comp_alg_common(
+	struct crypto_alg *alg)
+{
+	return container_of(alg, struct comp_alg_common, base);
+}
+
 static inline struct crypto_acomp *__crypto_acomp_tfm(struct crypto_tfm *tfm)
 {
 	return container_of(tfm, struct crypto_acomp, base);
 }
 
+static inline struct comp_alg_common *crypto_comp_alg_common(
+	struct crypto_acomp *tfm)
+{
+	return __crypto_comp_alg_common(crypto_acomp_tfm(tfm)->__crt_alg);
+}
+
 static inline unsigned int crypto_acomp_reqsize(struct crypto_acomp *tfm)
 {
 	return tfm->reqsize;
@@ -214,6 +255,27 @@ static inline void acomp_request_set_params(struct acomp_req *req,
 		req->flags |= CRYPTO_ACOMP_ALLOC_OUTPUT;
 }
 
+static inline struct crypto_istat_compress *comp_get_stat(
+	struct comp_alg_common *alg)
+{
+#ifdef CONFIG_CRYPTO_STATS
+	return &alg->stat;
+#else
+	return NULL;
+#endif
+}
+
+static inline int crypto_comp_errstat(struct comp_alg_common *alg, int err)
+{
+	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
+		return err;
+
+	if (err && err != -EINPROGRESS && err != -EBUSY)
+		atomic64_inc(&comp_get_stat(alg)->err_cnt);
+
+	return err;
+}
+
 /**
  * crypto_acomp_compress() -- Invoke asynchronous compress operation
  *
@@ -225,7 +287,19 @@ static inline void acomp_request_set_params(struct acomp_req *req,
  */
 static inline int crypto_acomp_compress(struct acomp_req *req)
 {
-	return crypto_acomp_reqtfm(req)->compress(req);
+	struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
+	struct comp_alg_common *alg;
+
+	alg = crypto_comp_alg_common(tfm);
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_compress *istat = comp_get_stat(alg);
+
+		atomic64_inc(&istat->compress_cnt);
+		atomic64_add(req->slen, &istat->compress_tlen);
+	}
+
+	return crypto_comp_errstat(alg, tfm->compress(req));
 }
 
 /**
@@ -239,7 +313,19 @@ static inline int crypto_acomp_compress(struct acomp_req *req)
  */
 static inline int crypto_acomp_decompress(struct acomp_req *req)
 {
-	return crypto_acomp_reqtfm(req)->decompress(req);
+	struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
+	struct comp_alg_common *alg;
+
+	alg = crypto_comp_alg_common(tfm);
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_compress *istat = comp_get_stat(alg);
+
+		atomic64_inc(&istat->decompress_cnt);
+		atomic64_add(req->slen, &istat->decompress_tlen);
+	}
+
+	return crypto_comp_errstat(alg, tfm->decompress(req));
 }
 
 #endif

include/crypto/aead.h

@@ -101,6 +101,22 @@ struct aead_request {
 	void *__ctx[] CRYPTO_MINALIGN_ATTR;
 };
 
+/*
+ * struct crypto_istat_aead - statistics for AEAD algorithm
+ * @encrypt_cnt:	number of encrypt requests
+ * @encrypt_tlen:	total data size handled by encrypt requests
+ * @decrypt_cnt:	number of decrypt requests
+ * @decrypt_tlen:	total data size handled by decrypt requests
+ * @err_cnt:		number of error for AEAD requests
+ */
+struct crypto_istat_aead {
+	atomic64_t encrypt_cnt;
+	atomic64_t encrypt_tlen;
+	atomic64_t decrypt_cnt;
+	atomic64_t decrypt_tlen;
+	atomic64_t err_cnt;
+};
+
 /**
  * struct aead_alg - AEAD cipher definition
  * @maxauthsize: Set the maximum authentication tag size supported by the
@@ -119,6 +135,7 @@ struct aead_request {
  * @setkey: see struct skcipher_alg
  * @encrypt: see struct skcipher_alg
  * @decrypt: see struct skcipher_alg
+ * @stat: statistics for AEAD algorithm
  * @ivsize: see struct skcipher_alg
  * @chunksize: see struct skcipher_alg
  * @init: Initialize the cryptographic transformation object. This function
@@ -145,6 +162,10 @@ struct aead_alg {
 	int (*init)(struct crypto_aead *tfm);
 	void (*exit)(struct crypto_aead *tfm);
 
+#ifdef CONFIG_CRYPTO_STATS
+	struct crypto_istat_aead stat;
+#endif
+
 	unsigned int ivsize;
 	unsigned int maxauthsize;
 	unsigned int chunksize;

include/crypto/akcipher.h

@@ -54,6 +54,26 @@ struct crypto_akcipher {
 	struct crypto_tfm base;
 };
 
+/*
+ * struct crypto_istat_akcipher - statistics for akcipher algorithm
+ * @encrypt_cnt:	number of encrypt requests
+ * @encrypt_tlen:	total data size handled by encrypt requests
+ * @decrypt_cnt:	number of decrypt requests
+ * @decrypt_tlen:	total data size handled by decrypt requests
+ * @verify_cnt:		number of verify operation
+ * @sign_cnt:		number of sign requests
+ * @err_cnt:		number of error for akcipher requests
+ */
+struct crypto_istat_akcipher {
+	atomic64_t encrypt_cnt;
+	atomic64_t encrypt_tlen;
+	atomic64_t decrypt_cnt;
+	atomic64_t decrypt_tlen;
+	atomic64_t verify_cnt;
+	atomic64_t sign_cnt;
+	atomic64_t err_cnt;
+};
+
 /**
  * struct akcipher_alg - generic public key algorithm
  *
@@ -90,6 +110,7 @@ struct crypto_akcipher {
  * @exit:	Deinitialize the cryptographic transformation object. This is a
  *		counterpart to @init, used to remove various changes set in
  *		@init.
+ * @stat:	Statistics for akcipher algorithm
  *
  * @base:	Common crypto API algorithm data structure
  */
@@ -106,6 +127,10 @@ struct akcipher_alg {
 	int (*init)(struct crypto_akcipher *tfm);
 	void (*exit)(struct crypto_akcipher *tfm);
 
+#ifdef CONFIG_CRYPTO_STATS
+	struct crypto_istat_akcipher stat;
+#endif
+
 	struct crypto_alg base;
 };
 
@@ -277,6 +302,27 @@ static inline unsigned int crypto_akcipher_maxsize(struct crypto_akcipher *tfm)
 	return alg->max_size(tfm);
 }
 
+static inline struct crypto_istat_akcipher *akcipher_get_stat(
+	struct akcipher_alg *alg)
+{
+#ifdef CONFIG_CRYPTO_STATS
+	return &alg->stat;
+#else
+	return NULL;
+#endif
+}
+
+static inline int crypto_akcipher_errstat(struct akcipher_alg *alg, int err)
+{
+	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
+		return err;
+
+	if (err && err != -EINPROGRESS && err != -EBUSY)
+		atomic64_inc(&akcipher_get_stat(alg)->err_cnt);
+
+	return err;
+}
+
 /**
  * crypto_akcipher_encrypt() - Invoke public key encrypt operation
  *
@@ -290,8 +336,16 @@ static inline unsigned int crypto_akcipher_maxsize(struct crypto_akcipher *tfm)
 static inline int crypto_akcipher_encrypt(struct akcipher_request *req)
 {
 	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
+	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
 
-	return crypto_akcipher_alg(tfm)->encrypt(req);
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_akcipher *istat = akcipher_get_stat(alg);
+
+		atomic64_inc(&istat->encrypt_cnt);
+		atomic64_add(req->src_len, &istat->encrypt_tlen);
+	}
+
+	return crypto_akcipher_errstat(alg, alg->encrypt(req));
 }
 
 /**
@@ -307,8 +361,16 @@ static inline int crypto_akcipher_encrypt(struct akcipher_request *req)
 static inline int crypto_akcipher_decrypt(struct akcipher_request *req)
 {
 	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
+	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
 
-	return crypto_akcipher_alg(tfm)->decrypt(req);
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_akcipher *istat = akcipher_get_stat(alg);
+
+		atomic64_inc(&istat->decrypt_cnt);
+		atomic64_add(req->src_len, &istat->decrypt_tlen);
+	}
+
+	return crypto_akcipher_errstat(alg, alg->decrypt(req));
 }
 
 /**
@@ -360,8 +422,12 @@ int crypto_akcipher_sync_decrypt(struct crypto_akcipher *tfm,
 static inline int crypto_akcipher_sign(struct akcipher_request *req)
 {
 	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
+	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
 
-	return crypto_akcipher_alg(tfm)->sign(req);
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		atomic64_inc(&akcipher_get_stat(alg)->sign_cnt);
+
+	return crypto_akcipher_errstat(alg, alg->sign(req));
 }
 
 /**
@@ -381,8 +447,12 @@ static inline int crypto_akcipher_sign(struct akcipher_request *req)
 static inline int crypto_akcipher_verify(struct akcipher_request *req)
 {
 	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
+	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		atomic64_inc(&akcipher_get_stat(alg)->verify_cnt);
 
-	return crypto_akcipher_alg(tfm)->verify(req);
+	return crypto_akcipher_errstat(alg, alg->verify(req));
 }
 
 /**

include/crypto/algapi.h

@@ -61,6 +61,9 @@ struct crypto_type {
 	void (*show)(struct seq_file *m, struct crypto_alg *alg);
 	int (*report)(struct sk_buff *skb, struct crypto_alg *alg);
 	void (*free)(struct crypto_instance *inst);
+#ifdef CONFIG_CRYPTO_STATS
+	int (*report_stat)(struct sk_buff *skb, struct crypto_alg *alg);
+#endif
 
 	unsigned int type;
 	unsigned int maskclear;

include/crypto/hash.h

@@ -23,8 +23,27 @@ struct crypto_ahash;
  * crypto_unregister_shash().
  */
 
+/*
+ * struct crypto_istat_hash - statistics for has algorithm
+ * @hash_cnt:		number of hash requests
+ * @hash_tlen:		total data size hashed
+ * @err_cnt:		number of error for hash requests
+ */
+struct crypto_istat_hash {
+	atomic64_t hash_cnt;
+	atomic64_t hash_tlen;
+	atomic64_t err_cnt;
+};
+
+#ifdef CONFIG_CRYPTO_STATS
+#define HASH_ALG_COMMON_STAT struct crypto_istat_hash stat;
+#else
+#define HASH_ALG_COMMON_STAT
+#endif
+
 /*
  * struct hash_alg_common - define properties of message digest
+ * @stat: Statistics for hash algorithm.
  * @digestsize: Size of the result of the transformation. A buffer of this size
  *	        must be available to the @final and @finup calls, so they can
  *	        store the resulting hash into it. For various predefined sizes,
@@ -41,6 +60,8 @@ struct crypto_ahash;
  *	  information.
  */
 #define HASH_ALG_COMMON {		\
+	HASH_ALG_COMMON_STAT		\
+					\
 	unsigned int digestsize;	\
 	unsigned int statesize;		\
 					\
@@ -222,6 +243,7 @@ struct shash_alg {
 	};
 };
 #undef HASH_ALG_COMMON
+#undef HASH_ALG_COMMON_STAT
 
 struct crypto_ahash {
 	bool using_shash; /* Underlying algorithm is shash, not ahash */

include/crypto/internal/acompress.h

@@ -31,7 +31,9 @@
  *		@init.
  *
  * @reqsize:	Context size for (de)compression requests
+ * @stat:	Statistics for compress algorithm
  * @base:	Common crypto API algorithm data structure
+ * @calg:	Cmonn algorithm data structure shared with scomp
  */
 struct acomp_alg {
 	int (*compress)(struct acomp_req *req);
@@ -42,7 +44,10 @@ struct acomp_alg {
 
 	unsigned int reqsize;
 
-	struct crypto_alg base;
+	union {
+		struct COMP_ALG_COMMON;
+		struct comp_alg_common calg;
+	};
 };
 
 /*

include/crypto/internal/cryptouser.h

+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/cryptouser.h>
+#include <net/netlink.h>
+
+struct crypto_alg *crypto_alg_match(struct crypto_user_alg *p, int exact);
+
+#ifdef CONFIG_CRYPTO_STATS
+int crypto_reportstat(struct sk_buff *in_skb, struct nlmsghdr *in_nlh, struct nlattr **attrs);
+#else
+static inline int crypto_reportstat(struct sk_buff *in_skb,
+				    struct nlmsghdr *in_nlh,
+				    struct nlattr **attrs)
+{
+	return -ENOTSUPP;
+}
+#endif

include/crypto/internal/scompress.h

@@ -27,7 +27,9 @@ struct crypto_scomp {
  * @free_ctx:	Function frees context allocated with alloc_ctx
  * @compress:	Function performs a compress operation
  * @decompress:	Function performs a de-compress operation
+ * @stat:	Statistics for compress algorithm
  * @base:	Common crypto API algorithm data structure
+ * @calg:	Cmonn algorithm data structure shared with acomp
  */
 struct scomp_alg {
 	void *(*alloc_ctx)(struct crypto_scomp *tfm);
@@ -38,7 +40,11 @@ struct scomp_alg {
 	int (*decompress)(struct crypto_scomp *tfm, const u8 *src,
 			  unsigned int slen, u8 *dst, unsigned int *dlen,
 			  void *ctx);
-	struct crypto_alg base;
+
+	union {
+		struct COMP_ALG_COMMON;
+		struct comp_alg_common calg;
+	};
 };
 
 static inline struct scomp_alg *__crypto_scomp_alg(struct crypto_alg *alg)

include/crypto/kpp.h

@@ -51,6 +51,20 @@ struct crypto_kpp {
 	struct crypto_tfm base;
 };
 
+/*
+ * struct crypto_istat_kpp - statistics for KPP algorithm
+ * @setsecret_cnt:		number of setsecrey operation
+ * @generate_public_key_cnt:	number of generate_public_key operation
+ * @compute_shared_secret_cnt:	number of compute_shared_secret operation
+ * @err_cnt:			number of error for KPP requests
+ */
+struct crypto_istat_kpp {
+	atomic64_t setsecret_cnt;
+	atomic64_t generate_public_key_cnt;
+	atomic64_t compute_shared_secret_cnt;
+	atomic64_t err_cnt;
+};
+
 /**
  * struct kpp_alg - generic key-agreement protocol primitives
  *
@@ -73,6 +87,7 @@ struct crypto_kpp {
  * @exit:		Undo everything @init did.
  *
  * @base:		Common crypto API algorithm data structure
+ * @stat:		Statistics for KPP algorithm
  */
 struct kpp_alg {
 	int (*set_secret)(struct crypto_kpp *tfm, const void *buffer,
@@ -85,6 +100,10 @@ struct kpp_alg {
 	int (*init)(struct crypto_kpp *tfm);
 	void (*exit)(struct crypto_kpp *tfm);
 
+#ifdef CONFIG_CRYPTO_STATS
+	struct crypto_istat_kpp stat;
+#endif
+
 	struct crypto_alg base;
 };
 
@@ -272,6 +291,26 @@ struct kpp_secret {
 	unsigned short len;
 };
 
+static inline struct crypto_istat_kpp *kpp_get_stat(struct kpp_alg *alg)
+{
+#ifdef CONFIG_CRYPTO_STATS
+	return &alg->stat;
+#else
+	return NULL;
+#endif
+}
+
+static inline int crypto_kpp_errstat(struct kpp_alg *alg, int err)
+{
+	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
+		return err;
+
+	if (err && err != -EINPROGRESS && err != -EBUSY)
+		atomic64_inc(&kpp_get_stat(alg)->err_cnt);
+
+	return err;
+}
+
 /**
  * crypto_kpp_set_secret() - Invoke kpp operation
  *
@@ -290,7 +329,12 @@ struct kpp_secret {
 static inline int crypto_kpp_set_secret(struct crypto_kpp *tfm,
 					const void *buffer, unsigned int len)
 {
-	return crypto_kpp_alg(tfm)->set_secret(tfm, buffer, len);
+	struct kpp_alg *alg = crypto_kpp_alg(tfm);
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		atomic64_inc(&kpp_get_stat(alg)->setsecret_cnt);
+
+	return crypto_kpp_errstat(alg, alg->set_secret(tfm, buffer, len));
 }
 
 /**
@@ -309,8 +353,12 @@ static inline int crypto_kpp_set_secret(struct crypto_kpp *tfm,
 static inline int crypto_kpp_generate_public_key(struct kpp_request *req)
 {
 	struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
+	struct kpp_alg *alg = crypto_kpp_alg(tfm);
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		atomic64_inc(&kpp_get_stat(alg)->generate_public_key_cnt);
 
-	return crypto_kpp_alg(tfm)->generate_public_key(req);
+	return crypto_kpp_errstat(alg, alg->generate_public_key(req));
 }
 
 /**
@@ -326,8 +374,12 @@ static inline int crypto_kpp_generate_public_key(struct kpp_request *req)
 static inline int crypto_kpp_compute_shared_secret(struct kpp_request *req)
 {
 	struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
+	struct kpp_alg *alg = crypto_kpp_alg(tfm);
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		atomic64_inc(&kpp_get_stat(alg)->compute_shared_secret_cnt);
 
-	return crypto_kpp_alg(tfm)->compute_shared_secret(req);
+	return crypto_kpp_errstat(alg, alg->compute_shared_secret(req));
 }
 
 /**

include/crypto/rng.h

@@ -15,6 +15,20 @@
 
 struct crypto_rng;
 
+/*
+ * struct crypto_istat_rng: statistics for RNG algorithm
+ * @generate_cnt:	number of RNG generate requests
+ * @generate_tlen:	total data size of generated data by the RNG
+ * @seed_cnt:		number of times the RNG was seeded
+ * @err_cnt:		number of error for RNG requests
+ */
+struct crypto_istat_rng {
+	atomic64_t generate_cnt;
+	atomic64_t generate_tlen;
+	atomic64_t seed_cnt;
+	atomic64_t err_cnt;
+};
+
 /**
  * struct rng_alg - random number generator definition
  *
@@ -32,6 +46,7 @@ struct crypto_rng;
  *		size of the seed is defined with @seedsize .
  * @set_ent:	Set entropy that would otherwise be obtained from
  *		entropy source.  Internal use only.
+ * @stat:	Statistics for rng algorithm
  * @seedsize:	The seed size required for a random number generator
  *		initialization defined with this variable. Some
  *		random number generators does not require a seed
@@ -48,6 +63,10 @@ struct rng_alg {
 	void (*set_ent)(struct crypto_rng *tfm, const u8 *data,
 			unsigned int len);
 
+#ifdef CONFIG_CRYPTO_STATS
+	struct crypto_istat_rng stat;
+#endif
+
 	unsigned int seedsize;
 
 	struct crypto_alg base;
@@ -125,6 +144,26 @@ static inline void crypto_free_rng(struct crypto_rng *tfm)
 	crypto_destroy_tfm(tfm, crypto_rng_tfm(tfm));
 }
 
+static inline struct crypto_istat_rng *rng_get_stat(struct rng_alg *alg)
+{
+#ifdef CONFIG_CRYPTO_STATS
+	return &alg->stat;
+#else
+	return NULL;
+#endif
+}
+
+static inline int crypto_rng_errstat(struct rng_alg *alg, int err)
+{
+	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
+		return err;
+
+	if (err && err != -EINPROGRESS && err != -EBUSY)
+		atomic64_inc(&rng_get_stat(alg)->err_cnt);
+
+	return err;
+}
+
 /**
  * crypto_rng_generate() - get random number
  * @tfm: cipher handle
@@ -143,7 +182,17 @@ static inline int crypto_rng_generate(struct crypto_rng *tfm,
 				      const u8 *src, unsigned int slen,
 				      u8 *dst, unsigned int dlen)
 {
-	return crypto_rng_alg(tfm)->generate(tfm, src, slen, dst, dlen);
+	struct rng_alg *alg = crypto_rng_alg(tfm);
+
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
+		struct crypto_istat_rng *istat = rng_get_stat(alg);
+
+		atomic64_inc(&istat->generate_cnt);
+		atomic64_add(dlen, &istat->generate_tlen);
+	}
+
+	return crypto_rng_errstat(alg,
+				  alg->generate(tfm, src, slen, dst, dlen));
 }
 
 /**

include/crypto/skcipher.h

@@ -64,6 +64,28 @@ struct crypto_lskcipher {
 	struct crypto_tfm base;
 };
 
+/*
+ * struct crypto_istat_cipher - statistics for cipher algorithm
+ * @encrypt_cnt:	number of encrypt requests
+ * @encrypt_tlen:	total data size handled by encrypt requests
+ * @decrypt_cnt:	number of decrypt requests
+ * @decrypt_tlen:	total data size handled by decrypt requests
+ * @err_cnt:		number of error for cipher requests
+ */
+struct crypto_istat_cipher {
+	atomic64_t encrypt_cnt;
+	atomic64_t encrypt_tlen;
+	atomic64_t decrypt_cnt;
+	atomic64_t decrypt_tlen;
+	atomic64_t err_cnt;
+};
+
+#ifdef CONFIG_CRYPTO_STATS
+#define SKCIPHER_ALG_COMMON_STAT struct crypto_istat_cipher stat;
+#else
+#define SKCIPHER_ALG_COMMON_STAT
+#endif
+
 /*
  * struct skcipher_alg_common - common properties of skcipher_alg
  * @min_keysize: Minimum key size supported by the transformation. This is the
@@ -81,6 +103,7 @@ struct crypto_lskcipher {
  * @chunksize: Equal to the block size except for stream ciphers such as
  *	       CTR where it is set to the underlying block size.
  * @statesize: Size of the internal state for the algorithm.
+ * @stat: Statistics for cipher algorithm
  * @base: Definition of a generic crypto algorithm.
  */
 #define SKCIPHER_ALG_COMMON {		\
@@ -90,6 +113,8 @@ struct crypto_lskcipher {
 	unsigned int chunksize;		\
 	unsigned int statesize;		\
 					\
+	SKCIPHER_ALG_COMMON_STAT	\
+					\
 	struct crypto_alg base;		\
 }
 struct skcipher_alg_common SKCIPHER_ALG_COMMON;

include/uapi/linux/cryptouser.h

@@ -54,16 +54,16 @@ enum crypto_attr_type_t {
 	CRYPTOCFGA_REPORT_AKCIPHER,	/* struct crypto_report_akcipher */
 	CRYPTOCFGA_REPORT_KPP,		/* struct crypto_report_kpp */
 	CRYPTOCFGA_REPORT_ACOMP,	/* struct crypto_report_acomp */
-	CRYPTOCFGA_STAT_LARVAL,		/* No longer supported */
-	CRYPTOCFGA_STAT_HASH,		/* No longer supported */
-	CRYPTOCFGA_STAT_BLKCIPHER,	/* No longer supported */
-	CRYPTOCFGA_STAT_AEAD,		/* No longer supported */
-	CRYPTOCFGA_STAT_COMPRESS,	/* No longer supported */
-	CRYPTOCFGA_STAT_RNG,		/* No longer supported */
-	CRYPTOCFGA_STAT_CIPHER,		/* No longer supported */
-	CRYPTOCFGA_STAT_AKCIPHER,	/* No longer supported */
-	CRYPTOCFGA_STAT_KPP,		/* No longer supported */
-	CRYPTOCFGA_STAT_ACOMP,		/* No longer supported */
+	CRYPTOCFGA_STAT_LARVAL,		/* struct crypto_stat */
+	CRYPTOCFGA_STAT_HASH,		/* struct crypto_stat */
+	CRYPTOCFGA_STAT_BLKCIPHER,	/* struct crypto_stat */
+	CRYPTOCFGA_STAT_AEAD,		/* struct crypto_stat */
+	CRYPTOCFGA_STAT_COMPRESS,	/* struct crypto_stat */
+	CRYPTOCFGA_STAT_RNG,		/* struct crypto_stat */
+	CRYPTOCFGA_STAT_CIPHER,		/* struct crypto_stat */
+	CRYPTOCFGA_STAT_AKCIPHER,	/* struct crypto_stat */
+	CRYPTOCFGA_STAT_KPP,		/* struct crypto_stat */
+	CRYPTOCFGA_STAT_ACOMP,		/* struct crypto_stat */
 	__CRYPTOCFGA_MAX
 
 #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1)
@@ -79,7 +79,6 @@ struct crypto_user_alg {
 	__u32 cru_flags;
 };
 
-/* No longer supported, do not use. */
 struct crypto_stat_aead {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_encrypt_cnt;
@@ -89,7 +88,6 @@ struct crypto_stat_aead {
 	__u64 stat_err_cnt;
 };
 
-/* No longer supported, do not use. */
 struct crypto_stat_akcipher {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_encrypt_cnt;
@@ -101,7 +99,6 @@ struct crypto_stat_akcipher {
 	__u64 stat_err_cnt;
 };
 
-/* No longer supported, do not use. */
 struct crypto_stat_cipher {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_encrypt_cnt;
@@ -111,7 +108,6 @@ struct crypto_stat_cipher {
 	__u64 stat_err_cnt;
 };
 
-/* No longer supported, do not use. */
 struct crypto_stat_compress {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_compress_cnt;
@@ -121,7 +117,6 @@ struct crypto_stat_compress {
 	__u64 stat_err_cnt;
 };
 
-/* No longer supported, do not use. */
 struct crypto_stat_hash {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_hash_cnt;
@@ -129,7 +124,6 @@ struct crypto_stat_hash {
 	__u64 stat_err_cnt;
 };
 
-/* No longer supported, do not use. */
 struct crypto_stat_kpp {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_setsecret_cnt;
@@ -138,7 +132,6 @@ struct crypto_stat_kpp {
 	__u64 stat_err_cnt;
 };
 
-/* No longer supported, do not use. */
 struct crypto_stat_rng {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_generate_cnt;
@@ -147,7 +140,6 @@ struct crypto_stat_rng {
 	__u64 stat_err_cnt;
 };
 
-/* No longer supported, do not use. */
 struct crypto_stat_larval {
 	char type[CRYPTO_MAX_NAME];
 };