[CRYPTO] templates: Pass type/mask when creating instances

This patch passes the type/mask along when constructing instances of
templates.  This is in preparation for templates that may support
multiple types of instances depending on what is requested.  For example,
the planned software async crypto driver will use this construct.

For the moment this allows us to check whether the instance constructed
is of the correct type and avoid returning success if the type does not
match.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 8 insertions, 3 deletions

diff --git a/crypto/hmac.c b/crypto/hmac.c
index 44187c5ee593..8802fb6dd5a6 100644
--- a/crypto/hmac.c
+++ b/crypto/hmac.c
@@ -197,13 +197,18 @@ static void hmac_free(struct crypto_instance *inst)
         kfree(inst);
 }
 
-static struct crypto_instance *hmac_alloc(void *param, unsigned int len)
+static struct crypto_instance *hmac_alloc(struct rtattr **tb)
 {
         struct crypto_instance *inst;
         struct crypto_alg *alg;
+        int err;
+
+        err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_HASH);
+        if (err)
+                return ERR_PTR(err);
 
-        alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_HASH,
-                                  CRYPTO_ALG_TYPE_HASH_MASK | CRYPTO_ALG_ASYNC);
+        alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_HASH,
+                                  CRYPTO_ALG_TYPE_HASH_MASK);
         if (IS_ERR(alg))
                 return ERR_PTR(PTR_ERR(alg));