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

[Himanshu Madhani]

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 at suse.de>
> Reviewed-by: Sagi Grimberg <sagi at grimberg.me>
> Reviewed-by: Chaitanya Kulkarni <kch at 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 at oracle.com>

-- 
Himanshu Madhani                                Oracle Linux Engineering