crypto: user - Implement a generic crypto statistics
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>
diff --git a/include/crypto/kpp.h b/include/crypto/kpp.h
index 1bde0a6..f517ba6 100644
--- a/include/crypto/kpp.h
+++ b/include/crypto/kpp.h
@@ -268,6 +268,42 @@ struct kpp_secret {
unsigned short len;
};
+static inline void crypto_stat_kpp_set_secret(struct crypto_kpp *tfm, int ret)
+{
+#ifdef CONFIG_CRYPTO_STATS
+ if (ret)
+ atomic_inc(&tfm->base.__crt_alg->kpp_err_cnt);
+ else
+ atomic_inc(&tfm->base.__crt_alg->setsecret_cnt);
+#endif
+}
+
+static inline void crypto_stat_kpp_generate_public_key(struct kpp_request *req,
+ int ret)
+{
+#ifdef CONFIG_CRYPTO_STATS
+ struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
+
+ if (ret)
+ atomic_inc(&tfm->base.__crt_alg->kpp_err_cnt);
+ else
+ atomic_inc(&tfm->base.__crt_alg->generate_public_key_cnt);
+#endif
+}
+
+static inline void crypto_stat_kpp_compute_shared_secret(struct kpp_request *req,
+ int ret)
+{
+#ifdef CONFIG_CRYPTO_STATS
+ struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
+
+ if (ret)
+ atomic_inc(&tfm->base.__crt_alg->kpp_err_cnt);
+ else
+ atomic_inc(&tfm->base.__crt_alg->compute_shared_secret_cnt);
+#endif
+}
+
/**
* crypto_kpp_set_secret() - Invoke kpp operation
*
@@ -287,8 +323,11 @@ static inline int crypto_kpp_set_secret(struct crypto_kpp *tfm,
const void *buffer, unsigned int len)
{
struct kpp_alg *alg = crypto_kpp_alg(tfm);
+ int ret;
- return alg->set_secret(tfm, buffer, len);
+ ret = alg->set_secret(tfm, buffer, len);
+ crypto_stat_kpp_set_secret(tfm, ret);
+ return ret;
}
/**
@@ -308,8 +347,11 @@ 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);
+ int ret;
- return alg->generate_public_key(req);
+ ret = alg->generate_public_key(req);
+ crypto_stat_kpp_generate_public_key(req, ret);
+ return ret;
}
/**
@@ -326,8 +368,11 @@ 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);
+ int ret;
- return alg->compute_shared_secret(req);
+ ret = alg->compute_shared_secret(req);
+ crypto_stat_kpp_compute_shared_secret(req, ret);
+ return ret;
}
/**