Add support for gRPC authenticated communications

Also, make a few namespace corrections and some minor refactoring.

Change-Id: Iedcaf6b43cb7576bc11dfefe980abd190c838831

client/include/rdc/rdc_client.h

@@ -182,6 +182,11 @@ typedef enum {
   /// Unrecoverable data loss or corruption.
   RDC_STATUS_GRPC_DATA_LOSS,
 
+  RDC_STATUS_CLIENT_ERR_FIRST = 2000,
+
+  /// SSL authentication error occurred.
+  RDC_STATUS_CLIENT_ERR_SSL = RDC_STATUS_CLIENT_ERR_FIRST,
+
   RDC_STATUS_UNKNOWN_ERROR = 0xFFFFFFFF,  //!< An unknown error occurred
 } rdc_status_t;
 

client/include/rdc/rdc_client_main.h

@@ -24,6 +24,8 @@ THE SOFTWARE.
 #ifndef CLIENT_INCLUDE_RDC_RDC_CLIENT_MAIN_H_
 #define CLIENT_INCLUDE_RDC_RDC_CLIENT_MAIN_H_
 
+#include <grpcpp/grpcpp.h>
+
 #include <string>
 #include <memory>
 
@@ -60,6 +62,7 @@ class RDCChannel {
   std::shared_ptr<::rdc::Rsmi::Stub> rsmi_stub_;
   std::shared_ptr<::rdc::RdcAdmin::Stub> rdc_admin_stub_;
   std::shared_ptr<grpc::Channel> channel_;
+  std::shared_ptr<grpc::ChannelCredentials> channel_creds_;
 };
 
 }  // namespace rdc

client/include/rdc/rdc_client_utils.h

@@ -0,0 +1,33 @@
+/*
+Copyright (c) 2020 - present Advanced Micro Devices, Inc. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+#ifndef CLIENT_INCLUDE_RDC_RDC_CLIENT_UTILS_H_
+#define CLIENT_INCLUDE_RDC_RDC_CLIENT_UTILS_H_
+
+namespace amd {
+namespace rdc {
+
+rdc_status_t GrpcErrorToRdcError(::grpc::StatusCode grpc_err);
+
+}  // namespace rdc
+}  // namespace amd
+
+#endif  // CLIENT_INCLUDE_RDC_RDC_CLIENT_UTILS_H_