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[02/11] crypto: add crypto_has_kpp()

Message ID 20220518112234.24264-3-hare@suse.de
State Accepted
Commit 9e2f284e149124aa9a6b963882d2b39ae1742196
Headers show
Series nvme: In-band authentication support | expand

Commit Message

Hannes Reinecke May 18, 2022, 11:22 a.m. UTC 
Add helper function to determine if a given key-agreement protocol
primitive is supported.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
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(+)
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Patch

diff --git a/crypto/kpp.c b/crypto/kpp.c
index 7aa6ba4b60a4..678e871ce418 100644
--- a/crypto/kpp.c
+++ b/crypto/kpp.c
@@ -104,6 +104,12 @@  int crypto_grab_kpp(struct crypto_kpp_spawn *spawn,
 }
 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)
 {
 	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;