Add helper function to determine if a given synchronous hash is supported.
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
Reviewed-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Reviewed-by: Chaitanya Kulkarni <kch@xxxxxxxxxx>
Reviewed-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
---
crypto/shash.c | 6 ++++++
include/crypto/hash.h | 2 ++
2 files changed, 8 insertions(+)
diff --git a/crypto/shash.c b/crypto/shash.c
index 0a0a50cb694f..4c88e63b3350 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -521,6 +521,12 @@ struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type,
}
EXPORT_SYMBOL_GPL(crypto_alloc_shash);
+int crypto_has_shash(const char *alg_name, u32 type, u32 mask)
+{
+ return crypto_type_has_alg(alg_name, &crypto_shash_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_has_shash);
+
static int shash_prepare_alg(struct shash_alg *alg)
{
struct crypto_alg *base = &alg->base;
diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index f140e4643949..f5841992dc9b 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -718,6 +718,8 @@ static inline void ahash_request_set_crypt(struct ahash_request *req,
struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type,
u32 mask);
+int crypto_has_shash(const char *alg_name, u32 type, u32 mask);
+
static inline struct crypto_tfm *crypto_shash_tfm(struct crypto_shash *tfm)
{
return &tfm->base;
--
2.29.2
