Re: [PATCH 01/12] crypto: add crypto_has_shash()

Himanshu Madhani
2021-11-15T15:53:40Z

On 11/12/21 06:59, Hannes Reinecke wrote:
> Add helper function to determine if a given synchronous hash is supported.
>
> Signed-off-by: Hannes Reinecke <hare@suse.de>
> Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
> ---
> crypto/shash.c | 6 ++++++
> include/crypto/hash.h | 2 ++
> 2 files changed, 8 insertions(+)
>
> diff --git a/crypto/shash.c b/crypto/shash.c
> index 0a0a50cb694f..4c88e63b3350 100644
> --- a/crypto/shash.c
> +++ b/crypto/shash.c
> @@ -521,6 +521,12 @@ struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type,
> }
> EXPORT_SYMBOL_GPL(crypto_alloc_shash);
>
> +int crypto_has_shash(const char *alg_name, u32 type, u32 mask)
> +{
> + return crypto_type_has_alg(alg_name, &crypto_shash_type, type, mask);
> +}
> +EXPORT_SYMBOL_GPL(crypto_has_shash);
> +
> static int shash_prepare_alg(struct shash_alg *alg)
> {
> struct crypto_alg *base = &alg->base;
> diff --git a/include/crypto/hash.h b/include/crypto/hash.h
> index f140e4643949..f5841992dc9b 100644
> --- a/include/crypto/hash.h
> +++ b/include/crypto/hash.h
> @@ -718,6 +718,8 @@ static inline void ahash_request_set_crypt(struct ahash_request *req,
> struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type,
> u32 mask);
>
> +int crypto_has_shash(const char *alg_name, u32 type, u32 mask);
> +
> static inline struct crypto_tfm *crypto_shash_tfm(struct crypto_shash *tfm)
> {
> return &tfm->base;
>

Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>

--
Himanshu Madhani Oracle Linux Engineering