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Sender: Herbert Xu <herbertx@gmail.com>
From:   Herbert Xu <herbert@gondor.apana.org.au>
To:     Linux Crypto Mailing List <linux-crypto@vger.kernel.org>
Cc:     Ard Biesheuvel <ardb@kernel.org>
Subject: [PATCH 1/8] crypto: aead - Add crypto_has_aead
Date:   Thu, 14 Sep 2023 16:28:21 +0800
Message-Id: <20230914082828.895403-2-herbert@gondor.apana.org.au>
In-Reply-To: <20230914082828.895403-1-herbert@gondor.apana.org.au>
References: <20230914082828.895403-1-herbert@gondor.apana.org.au>
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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>
---
 crypto/aead.c         |  6 ++++++
 include/crypto/aead.h | 12 ++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/crypto/aead.c b/crypto/aead.c
index d5ba204ebdbf..54906633566a 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -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);
diff --git a/include/crypto/aead.h b/include/crypto/aead.h
index 35e45b854a6f..51382befbe37 100644
--- a/include/crypto/aead.h
+++ b/include/crypto/aead.h
@@ -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));
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt