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crypto: user - Implement a generic crypto statistics

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

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Corentin Labbe
2018-09-19 10:10:54 +00:00
committed by Herbert Xu
parent a9cbfe4c78
commit cac5818c25
17 changed files with 970 additions and 35 deletions
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44
include/crypto/skcipher.h
View File

@@ -486,6 +486,32 @@ static inline struct crypto_sync_skcipher *crypto_sync_skcipher_reqtfm(
return container_of(tfm, struct crypto_sync_skcipher, base);
}
static inline void crypto_stat_skcipher_encrypt(struct skcipher_request *req,
int ret, struct crypto_alg *alg)
{
#ifdef CONFIG_CRYPTO_STATS
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic_inc(&alg->cipher_err_cnt);
} else {
atomic_inc(&alg->encrypt_cnt);
atomic64_add(req->cryptlen, &alg->encrypt_tlen);
}
#endif
}
static inline void crypto_stat_skcipher_decrypt(struct skcipher_request *req,
int ret, struct crypto_alg *alg)
{
#ifdef CONFIG_CRYPTO_STATS
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic_inc(&alg->cipher_err_cnt);
} else {
atomic_inc(&alg->decrypt_cnt);
atomic64_add(req->cryptlen, &alg->decrypt_tlen);
}
#endif
}
/**
* crypto_skcipher_encrypt() - encrypt plaintext
* @req: reference to the skcipher_request handle that holds all information
@@ -500,11 +526,14 @@ static inline struct crypto_sync_skcipher *crypto_sync_skcipher_reqtfm(
static inline int crypto_skcipher_encrypt(struct skcipher_request *req)
{
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
int ret;
if (crypto_skcipher_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
return -ENOKEY;
return tfm->encrypt(req);
ret = -ENOKEY;
else
ret = tfm->encrypt(req);
crypto_stat_skcipher_encrypt(req, ret, tfm->base.__crt_alg);
return ret;
}
/**
@@ -521,11 +550,14 @@ static inline int crypto_skcipher_encrypt(struct skcipher_request *req)
static inline int crypto_skcipher_decrypt(struct skcipher_request *req)
{
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
int ret;
if (crypto_skcipher_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
return -ENOKEY;
return tfm->decrypt(req);
ret = -ENOKEY;
else
ret = tfm->decrypt(req);
crypto_stat_skcipher_decrypt(req, ret, tfm->base.__crt_alg);
return ret;
}
/**