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crypto: add crypto_has_kpp() 

Add helper function to determine if a given key-agreement protocol
primitive is supported.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Hannes Reinecke 2022-06-27 11:51:58 +02:00 committed by Jens Axboe
parent 85cc424381
commit 9e2f284e14
2 changed files with 8 additions and 0 deletions
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6
crypto/kpp.c
View File

@ -104,6 +104,12 @@ int crypto_grab_kpp(struct crypto_kpp_spawn *spawn,
} }
EXPORT_SYMBOL_GPL(crypto_grab_kpp); EXPORT_SYMBOL_GPL(crypto_grab_kpp);
int crypto_has_kpp(const char *alg_name, u32 type, u32 mask)
{
return crypto_type_has_alg(alg_name, &crypto_kpp_type, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_has_kpp);
static void kpp_prepare_alg(struct kpp_alg *alg) static void kpp_prepare_alg(struct kpp_alg *alg)
{ {
struct crypto_alg *base = &alg->base; struct crypto_alg *base = &alg->base;

2
include/crypto/kpp.h
View File

@ -104,6 +104,8 @@ struct kpp_alg {
*/ */
struct crypto_kpp *crypto_alloc_kpp(const char *alg_name, u32 type, u32 mask); struct crypto_kpp *crypto_alloc_kpp(const char *alg_name, u32 type, u32 mask);
int crypto_has_kpp(const char *alg_name, u32 type, u32 mask);
static inline struct crypto_tfm *crypto_kpp_tfm(struct crypto_kpp *tfm) static inline struct crypto_tfm *crypto_kpp_tfm(struct crypto_kpp *tfm)
{ {
return &tfm->base; return &tfm->base;