On 12/20/2017 12:09 PM, Corentin Labbe wrote:
> This patch implement a generic way to get statistics about all crypto
> usages.
>
> Signed-off-by: Corentin Labbe <clabbe@xxxxxxxxxxxx>
> ---
> crypto/Kconfig | 11 +++
> crypto/ahash.c | 18 +++++
> crypto/algapi.c | 186 +++++++++++++++++++++++++++++++++++++++++++++
> crypto/rng.c | 3 +
> include/crypto/acompress.h | 10 +++
> include/crypto/akcipher.h | 12 +++
> include/crypto/kpp.h | 9 +++
> include/crypto/rng.h | 5 ++
> include/crypto/skcipher.h | 8 ++
> include/linux/crypto.h | 22 ++++++
> 10 files changed, 284 insertions(+)
>
> diff --git a/crypto/Kconfig b/crypto/Kconfig
> index d6e9b60fc063..69f1822a026b 100644
> --- a/crypto/Kconfig
> +++ b/crypto/Kconfig
> @@ -1781,6 +1781,17 @@ 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
symmetric
> + - 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
>
> diff --git a/crypto/algapi.c b/crypto/algapi.c
> index b8f6122f37e9..4fca4576af78 100644
> --- a/crypto/algapi.c
> +++ b/crypto/algapi.c
> @@ -20,11 +20,158 @@
> #include <linux/rtnetlink.h>
> #include <linux/slab.h>
> #include <linux/string.h>
> +#include <linux/kobject.h>
>
> #include "internal.h"
>
> +static ssize_t fcrypto_stat_type(struct kobject *kobj,
> + struct kobj_attribute *attr, char *buf)
> +{
> + struct crypto_alg *alg;
> + u32 type;
> +
> + alg = container_of(kobj, struct crypto_alg, cra_stat_obj);
> + type = (alg->cra_flags & CRYPTO_ALG_TYPE_MASK);
> + if (type == CRYPTO_ALG_TYPE_ABLKCIPHER ||
> + type == CRYPTO_ALG_TYPE_SKCIPHER ||
> + type == CRYPTO_ALG_TYPE_CIPHER ||
> + type == CRYPTO_ALG_TYPE_BLKCIPHER
> + )
> + return snprintf(buf, 9, "cipher\n");
> + if (type == CRYPTO_ALG_TYPE_AHASH ||
> + type == CRYPTO_ALG_TYPE_HASH
> + )
> + return snprintf(buf, 9, "hash\n");
> + if (type == CRYPTO_ALG_TYPE_COMPRESS ||
> + type == CRYPTO_ALG_TYPE_SCOMPRESS)
> + return snprintf(buf, 11, "compress\n");
> + if (type == CRYPTO_ALG_TYPE_RNG)
> + return snprintf(buf, 9, "rng\n");
> + if (type == CRYPTO_ALG_TYPE_AKCIPHER)
> + return snprintf(buf, 11, "asymetric\n");
asymmetric
> + if (type == CRYPTO_ALG_TYPE_KPP)
> + return snprintf(buf, 4, "kpp\n");
> + return snprintf(buf, 16, "unknown %x\n", type);
> +}
--
~Randy
