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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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51
include/crypto/aead.h
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@@ -306,6 +306,34 @@ static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
return __crypto_aead_cast(req->base.tfm);
}
static inline void crypto_stat_aead_encrypt(struct aead_request *req, int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic_inc(&tfm->base.__crt_alg->aead_err_cnt);
} else {
atomic_inc(&tfm->base.__crt_alg->encrypt_cnt);
atomic64_add(req->cryptlen, &tfm->base.__crt_alg->encrypt_tlen);
}
#endif
}
static inline void crypto_stat_aead_decrypt(struct aead_request *req, int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic_inc(&tfm->base.__crt_alg->aead_err_cnt);
} else {
atomic_inc(&tfm->base.__crt_alg->decrypt_cnt);
atomic64_add(req->cryptlen, &tfm->base.__crt_alg->decrypt_tlen);
}
#endif
}
/**
* crypto_aead_encrypt() - encrypt plaintext
* @req: reference to the aead_request handle that holds all information
@@ -328,11 +356,14 @@ static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
static inline int crypto_aead_encrypt(struct aead_request *req)
{
struct crypto_aead *aead = crypto_aead_reqtfm(req);
int ret;
if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
return -ENOKEY;
return crypto_aead_alg(aead)->encrypt(req);
ret = -ENOKEY;
else
ret = crypto_aead_alg(aead)->encrypt(req);
crypto_stat_aead_encrypt(req, ret);
return ret;
}
/**
@@ -360,14 +391,16 @@ static inline int crypto_aead_encrypt(struct aead_request *req)
static inline int crypto_aead_decrypt(struct aead_request *req)
{
struct crypto_aead *aead = crypto_aead_reqtfm(req);
int ret;
if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
return -ENOKEY;
if (req->cryptlen < crypto_aead_authsize(aead))
return -EINVAL;
return crypto_aead_alg(aead)->decrypt(req);
ret = -ENOKEY;
else if (req->cryptlen < crypto_aead_authsize(aead))
ret = -EINVAL;
else
ret = crypto_aead_alg(aead)->decrypt(req);
crypto_stat_aead_decrypt(req, ret);
return ret;
}
/**