crypto: engine - Add KPP Support to Crypto Engine

Add KPP support to the crypto engine queue manager, so that it can be
used to simplify the logic of KPP device drivers as done for other
crypto drivers.

Signed-off-by: Prabhjot Khurana <[e-mail]>
Signed-off-by: Daniele Alessandrelli <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

Documentation/crypto/crypto_engine.rst

···
 
 * crypto_transfer_hash_request_to_engine()
 
+* crypto_transfer_kpp_request_to_engine()
+
 * crypto_transfer_skcipher_request_to_engine()
 
 At the end of the request process, a call to one of the following functions is needed:
···
 * crypto_finalize_akcipher_request()
 
 * crypto_finalize_hash_request()
+
+* crypto_finalize_kpp_request()
 
 * crypto_finalize_skcipher_request()

crypto/crypto_engine.c

···
 EXPORT_SYMBOL_GPL(crypto_transfer_hash_request_to_engine);
 
 /**
+ * crypto_transfer_kpp_request_to_engine - transfer one kpp_request to list
+ * into the engine queue
+ * @engine: the hardware engine
+ * @req: the request need to be listed into the engine queue
+ */
+int crypto_transfer_kpp_request_to_engine(struct crypto_engine *engine,
+					  struct kpp_request *req)
+{
+	return crypto_transfer_request_to_engine(engine, &req->base);
+}
+EXPORT_SYMBOL_GPL(crypto_transfer_kpp_request_to_engine);
+
+/**
  * crypto_transfer_skcipher_request_to_engine - transfer one skcipher_request
  * to list into the engine queue
  * @engine: the hardware engine
···
 	return crypto_finalize_request(engine, &req->base, err);
 }
 EXPORT_SYMBOL_GPL(crypto_finalize_hash_request);
+
+/**
+ * crypto_finalize_kpp_request - finalize one kpp_request if the request is done
+ * @engine: the hardware engine
+ * @req: the request need to be finalized
+ * @err: error number
+ */
+void crypto_finalize_kpp_request(struct crypto_engine *engine,
+				 struct kpp_request *req, int err)
+{
+	return crypto_finalize_request(engine, &req->base, err);
+}
+EXPORT_SYMBOL_GPL(crypto_finalize_kpp_request);
 
 /**
  * crypto_finalize_skcipher_request - finalize one skcipher_request if

include/crypto/engine.h

···
 #include <crypto/akcipher.h>
 #include <crypto/hash.h>
 #include <crypto/skcipher.h>
+#include <crypto/kpp.h>
 
 #define ENGINE_NAME_LEN	30
 /*
···
 					       struct akcipher_request *req);
 int crypto_transfer_hash_request_to_engine(struct crypto_engine *engine,
 					       struct ahash_request *req);
+int crypto_transfer_kpp_request_to_engine(struct crypto_engine *engine,
+					  struct kpp_request *req);
 int crypto_transfer_skcipher_request_to_engine(struct crypto_engine *engine,
 					       struct skcipher_request *req);
 void crypto_finalize_aead_request(struct crypto_engine *engine,
···
 				      struct akcipher_request *req, int err);
 void crypto_finalize_hash_request(struct crypto_engine *engine,
 				  struct ahash_request *req, int err);
+void crypto_finalize_kpp_request(struct crypto_engine *engine,
+				 struct kpp_request *req, int err);
 void crypto_finalize_skcipher_request(struct crypto_engine *engine,
 				      struct skcipher_request *req, int err);
 int crypto_engine_start(struct crypto_engine *engine);