Extend RPC parameters
The RPC model is extended to include parameters for identifying
an RPC interface instance at an endpoint and another for
identifying the parameter encoding. The interface ID parameter
allows multiple service interfaces to be co-located. The encoding
parameter allows clients to use different parameter serialization
schemes and to specify the format in each RPC request.
Signed-off-by: julhal01 <julian.hall@arm.com>
Change-Id: I201b3417dc0e9f655113b9931db3494e41f1d74b
diff --git a/components/service/common/provider/service_provider.h b/components/service/common/provider/service_provider.h
index 6f86073..508a93f 100644
--- a/components/service/common/provider/service_provider.h
+++ b/components/service/common/provider/service_provider.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2020, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2020-2021, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -7,7 +7,7 @@
#ifndef SERVICE_PROVIDER_H
#define SERVICE_PROVIDER_H
-#include <rpc/common/endpoint/call_ep.h>
+#include <rpc/common/endpoint/rpc_interface.h>
#include <stddef.h>
#include <stdint.h>
@@ -40,28 +40,29 @@
*
* A generalised service provider that acts as an rpc call endpoint. It receives call
* requests and delegates them to the approprate handle provided by a concrete service
- * provider.
+ * provider. To support service specialization and proxying, unhandled requests may
+ * optionally be passed to a delegate rpc_interface to form a chain of responsibility.
*/
struct service_provider {
- struct call_ep base;
- const struct service_handler *handlers;
- size_t num_handlers;
- call_param_serializer_ptr default_serializer;
+ struct rpc_interface iface;
+ const struct service_handler *handlers;
+ size_t num_handlers;
+ struct rpc_interface *successor;
};
-static inline struct call_ep *service_provider_get_call_ep(struct service_provider *sp)
+static inline struct rpc_interface *service_provider_get_rpc_interface(struct service_provider *sp)
{
- return &sp->base;
+ return &sp->iface;
}
void service_provider_init(struct service_provider *sp, void *context,
- const struct service_handler *handlers,
- size_t num_handlers);
+ const struct service_handler *handlers,
+ size_t num_handlers);
-static inline void service_set_default_serializer(struct service_provider *sp,
- call_param_serializer_ptr serializer)
+static inline void service_provider_link_successor(struct service_provider *sp,
+ struct rpc_interface *successor)
{
- sp->default_serializer = serializer;
+ sp->successor = successor;
}
#ifdef __cplusplus