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Commit cac5818c authored by Corentin Labbe's avatar Corentin Labbe Committed by Herbert Xu
Browse files

crypto: user - Implement a generic crypto statistics 



This patch implement a generic way to get statistics about all crypto
usages.

Signed-off-by: default avatarCorentin Labbe <clabbe@baylibre.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent a9cbfe4c

crypto/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -1799,6 +1799,17 @@ config CRYPTO_USER_API_AEAD 
	  This option enables the user-spaces interface for AEAD

	  cipher algorithms.



config CRYPTO_STATS

	bool "Crypto usage statistics for User-space"

	help

	  This option enables the gathering of crypto stats.

	  This will collect:

	  - encrypt/decrypt size and numbers of symmeric operations

	  - compress/decompress size and numbers of compress operations

	  - size and numbers of hash operations

	  - encrypt/decrypt/sign/verify numbers for asymmetric operations

	  - generate/seed numbers for rng operations



config CRYPTO_HASH_INFO

	bool

crypto/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -54,6 +54,7 @@ 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_stat.o

obj-$(CONFIG_CRYPTO_CMAC) += cmac.o

obj-$(CONFIG_CRYPTO_HMAC) += hmac.o

obj-$(CONFIG_CRYPTO_VMAC) += vmac.o

crypto/ahash.c

+16 −5
Original line number Diff line number Diff line
@@ -364,24 +364,35 @@ static int crypto_ahash_op(struct ahash_request *req, 


int crypto_ahash_final(struct ahash_request *req)

{

	return crypto_ahash_op(req, crypto_ahash_reqtfm(req)->final);

	int ret;



	ret = crypto_ahash_op(req, crypto_ahash_reqtfm(req)->final);

	crypto_stat_ahash_final(req, ret);

	return ret;

}

EXPORT_SYMBOL_GPL(crypto_ahash_final);



int crypto_ahash_finup(struct ahash_request *req)

{

	return crypto_ahash_op(req, crypto_ahash_reqtfm(req)->finup);

	int ret;



	ret = crypto_ahash_op(req, crypto_ahash_reqtfm(req)->finup);

	crypto_stat_ahash_final(req, ret);

	return ret;

}

EXPORT_SYMBOL_GPL(crypto_ahash_finup);



int crypto_ahash_digest(struct ahash_request *req)

{

	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);

	int ret;



	if (crypto_ahash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)

		return -ENOKEY;



	return crypto_ahash_op(req, tfm->digest);

		ret = -ENOKEY;

	else

		ret = crypto_ahash_op(req, tfm->digest);

	crypto_stat_ahash_final(req, ret);

	return ret;

}

EXPORT_SYMBOL_GPL(crypto_ahash_digest);

crypto/algapi.c

+8 −0
Original line number Diff line number Diff line
@@ -258,6 +258,14 @@ static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg) 
	list_add(&alg->cra_list, &crypto_alg_list);

	list_add(&larval->alg.cra_list, &crypto_alg_list);



	atomic_set(&alg->encrypt_cnt, 0);

	atomic_set(&alg->decrypt_cnt, 0);

	atomic64_set(&alg->encrypt_tlen, 0);

	atomic64_set(&alg->decrypt_tlen, 0);

	atomic_set(&alg->verify_cnt, 0);

	atomic_set(&alg->cipher_err_cnt, 0);

	atomic_set(&alg->sign_cnt, 0);



out:

	return larval;

crypto/crypto_user.c→crypto/crypto_user_base.c

+7 −2
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include <crypto/internal/rng.h>

#include <crypto/akcipher.h>

#include <crypto/kpp.h>

#include <crypto/internal/cryptouser.h>



#include "internal.h"
@@ -37,7 +38,7 @@ 
static DEFINE_MUTEX(crypto_cfg_mutex);



/* The crypto netlink socket */

static struct sock *crypto_nlsk;

struct sock *crypto_nlsk;



struct crypto_dump_info {

	struct sk_buff *in_skb;
@@ -46,7 +47,7 @@ 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;
@@ -461,6 +462,7 @@ static const int crypto_msg_min[CRYPTO_NR_MSGTYPES] = { 
	[CRYPTO_MSG_UPDATEALG	- CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg),

	[CRYPTO_MSG_GETALG	- CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg),

	[CRYPTO_MSG_DELRNG	- CRYPTO_MSG_BASE] = 0,

	[CRYPTO_MSG_GETSTAT	- CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg),

};



static const struct nla_policy crypto_policy[CRYPTOCFGA_MAX+1] = {
@@ -481,6 +483,9 @@ static const struct crypto_link { 
						       .dump = crypto_dump_report,

						       .done = crypto_dump_report_done},

	[CRYPTO_MSG_DELRNG	- CRYPTO_MSG_BASE] = { .doit = crypto_del_rng },

	[CRYPTO_MSG_GETSTAT	- CRYPTO_MSG_BASE] = { .doit = crypto_reportstat,

						       .dump = crypto_dump_reportstat,

						       .done = crypto_dump_reportstat_done},

};



static int crypto_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,