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crypto: hash - Add crypto_has_ahash helper

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This patch adds the helper crypto_has_ahash which should replace
crypto_has_hash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2016-01-23 13:52:40 +08:00
parent f2aefdab5d
commit 8d18e34c1f
2 changed files with 18 additions and 0 deletions
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6
crypto/ahash.c
View File

@ -542,6 +542,12 @@ struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, u32 type,
}
EXPORT_SYMBOL_GPL(crypto_alloc_ahash);
int crypto_has_ahash(const char *alg_name, u32 type, u32 mask)
{
return crypto_type_has_alg(alg_name, &crypto_ahash_type, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_has_ahash);
static int ahash_prepare_alg(struct ahash_alg *alg)
{
struct crypto_alg *base = &alg->halg.base;

12
include/crypto/hash.h
View File

@ -260,6 +260,18 @@ static inline void crypto_free_ahash(struct crypto_ahash *tfm)
crypto_destroy_tfm(tfm, crypto_ahash_tfm(tfm));
}
/**
* crypto_has_ahash() - Search for the availability of an ahash.
* @alg_name: is the cra_name / name or cra_driver_name / driver name of the
* ahash
* @type: specifies the type of the ahash
* @mask: specifies the mask for the ahash
*
* Return: true when the ahash is known to the kernel crypto API; false
* otherwise
*/
int crypto_has_ahash(const char *alg_name, u32 type, u32 mask);
static inline unsigned int crypto_ahash_alignmask(
struct crypto_ahash *tfm)
{