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From:   Hannes Reinecke <hare@suse.de>
To:     Christoph Hellwig <hch@lst.de>
Cc:     Sagi Grimberg <sagi@grimberg.me>, Keith Busch <kbusch@kernel.org>,
        linux-nvme@lists.infradead.org, linux-crypto@vger.kernel.org,
        Hannes Reinecke <hare@suse.de>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        Chaitanya Kulkarni <kch@nvidia.com>,
        Himanshu Madhani <himanshu.madhani@oracle.com>
Subject: [PATCH 02/11] crypto: add crypto_has_kpp()
Date:   Wed, 18 May 2022 13:22:25 +0200
Message-Id: <20220518112234.24264-3-hare@suse.de>
In-Reply-To: <20220518112234.24264-1-hare@suse.de>
References: <20220518112234.24264-1-hare@suse.de>
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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(+)

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;
-- 
2.29.2