[PATCH 02/12] crypto: add crypto_has_kpp()

Hannes Reinecke
2021-12-02T15:24:13Z

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>
---
crypto/kpp.c | 6 ++++++
include/crypto/kpp.h | 2 ++
2 files changed, 8 insertions(+)

diff --git a/crypto/kpp.c b/crypto/kpp.c
index 313b2c699963..416e8a1a03ee 100644
--- a/crypto/kpp.c
+++ b/crypto/kpp.c
@@ -87,6 +87,12 @@ struct crypto_kpp *crypto_alloc_kpp(const char *alg_name, u32 type, u32 mask)
}
EXPORT_SYMBOL_GPL(crypto_alloc_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)
{
struct crypto_alg *base = &alg->base;
diff --git a/include/crypto/kpp.h b/include/crypto/kpp.h
index cccceadc164b..24d01e9877c1 100644
--- a/include/crypto/kpp.h
+++ b/include/crypto/kpp.h
@@ -104,6 +104,8 @@ struct kpp_alg {
*/
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)
{
return &tfm->base;
--
2.29.2