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crypto: aead - Add crypto_has_aead

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Add the helper crypto_has_aead.  This is meant to replace the
existing use of crypto_has_alg to locate AEAD algorithms.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2023-09-14 16:28:21 +08:00
parent 02968703e8
commit 534562e59f
2 changed files with 18 additions and 0 deletions
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6
crypto/aead.c
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@ -269,6 +269,12 @@ struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask)
}
EXPORT_SYMBOL_GPL(crypto_alloc_aead);
int crypto_has_aead(const char *alg_name, u32 type, u32 mask)
{
return crypto_type_has_alg(alg_name, &crypto_aead_type, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_has_aead);
static int aead_prepare_alg(struct aead_alg *alg)
{
struct crypto_istat_aead *istat = aead_get_stat(alg);

12
include/crypto/aead.h
View File

@ -217,6 +217,18 @@ static inline void crypto_free_aead(struct crypto_aead *tfm)
crypto_destroy_tfm(tfm, crypto_aead_tfm(tfm));
}
/**
* crypto_has_aead() - Search for the availability of an aead.
* @alg_name: is the cra_name / name or cra_driver_name / driver name of the
* aead
* @type: specifies the type of the aead
* @mask: specifies the mask for the aead
*
* Return: true when the aead is known to the kernel crypto API; false
* otherwise
*/
int crypto_has_aead(const char *alg_name, u32 type, u32 mask);
static inline const char *crypto_aead_driver_name(struct crypto_aead *tfm)
{
return crypto_tfm_alg_driver_name(crypto_aead_tfm(tfm));