[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>

2 files changed, 14 insertions, 3 deletions

diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 4e05e93ff681..d0c190b4d02f 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -15,6 +15,7 @@
 #include <linux/crypto.h>
 
 struct module;
+struct rtattr;
 struct seq_file;
 
 struct crypto_type {
@@ -38,7 +39,7 @@ struct crypto_template {
 	struct hlist_head instances;
 	struct module *module;
 
-	struct crypto_instance *(*alloc)(void *param, unsigned int len);
+	struct crypto_instance *(*alloc)(struct rtattr **tb);
 	void (*free)(struct crypto_instance *inst);
 
 	char name[CRYPTO_MAX_ALG_NAME];
@@ -96,8 +97,9 @@ void crypto_drop_spawn(struct crypto_spawn *spawn);
 struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type,
 				    u32 mask);
 
-struct crypto_alg *crypto_get_attr_alg(void *param, unsigned int len,
-				       u32 type, u32 mask);
+struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb);
+int crypto_check_attr_type(struct rtattr **tb, u32 type);
+struct crypto_alg *crypto_get_attr_alg(struct rtattr **tb, u32 type, u32 mask);
 struct crypto_instance *crypto_alloc_instance(const char *name,
 					      struct crypto_alg *alg);
 
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index d4d05313280c..67830e7c2c31 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -372,12 +372,21 @@ struct crypto_hash {
 enum {
 	CRYPTOA_UNSPEC,
 	CRYPTOA_ALG,
+	CRYPTOA_TYPE,
+	__CRYPTOA_MAX,
 };
 
+#define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
+
 struct crypto_attr_alg {
 	char name[CRYPTO_MAX_ALG_NAME];
 };
 
+struct crypto_attr_type {
+	u32 type;
+	u32 mask;
+};
+
 /* 
  * Transform user interface.
  */