From 8d18e34c1fe22418ae0b5475ab0d1956d69ad195 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Sat, 23 Jan 2016 13:52:40 +0800
Subject: [PATCH] crypto: hash - Add crypto_has_ahash helper
This patch adds the helper crypto_has_ahash which should replace
crypto_has_hash.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
crypto/ahash.c | 6 ++++++
include/crypto/hash.h | 12 ++++++++++++
2 files changed, 18 insertions(+)
diff --git a/crypto/ahash.c b/crypto/ahash.c
index d19b52324cf52..8b08a59221a62 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -542,6 +542,12 @@ struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, u32 type,
}
EXPORT_SYMBOL_GPL(crypto_alloc_ahash);
+int crypto_has_ahash(const char *alg_name, u32 type, u32 mask)
+{
+ return crypto_type_has_alg(alg_name, &crypto_ahash_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_has_ahash);
+
static int ahash_prepare_alg(struct ahash_alg *alg)
{
struct crypto_alg *base = &alg->halg.base;
diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index aef819247fe83..f855efaa2f8cf 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -260,6 +260,18 @@ static inline void crypto_free_ahash(struct crypto_ahash *tfm)
crypto_destroy_tfm(tfm, crypto_ahash_tfm(tfm));
}
+/**
+ * crypto_has_ahash() - Search for the availability of an ahash.
+ * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
+ * ahash
+ * @type: specifies the type of the ahash
+ * @mask: specifies the mask for the ahash
+ *
+ * Return: true when the ahash is known to the kernel crypto API; false
+ * otherwise
+ */
+int crypto_has_ahash(const char *alg_name, u32 type, u32 mask);
+
static inline unsigned int crypto_ahash_alignmask(
struct crypto_ahash *tfm)
{
--
GitLab