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diff --git a/tensorflow/contrib/verbs/rdma_mgr.h b/tensorflow/contrib/verbs/rdma_mgr.h
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+/* Copyright 2017 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#ifndef THIRD_PARTY_TENSORFLOW_CONTRIB_VERBS_RDMA_MGR_H_
+#define THIRD_PARTY_TENSORFLOW_CONTRIB_VERBS_RDMA_MGR_H_
+
+#ifdef TENSORFLOW_USE_VERBS
+
+#include <string>
+#include <unordered_map>
+
+#include "tensorflow/contrib/verbs/rdma.h"
+#include "tensorflow/core/distributed_runtime/rpc/grpc_channel.h"
+#include "tensorflow/core/distributed_runtime/worker_env.h"
+
+namespace tensorflow {
+
+class RdmaMgr {
+ public:
+  explicit RdmaMgr(const WorkerEnv* const worker_env,
+                   GrpcChannelCache* const channel_cache);
+  ~RdmaMgr();
+  RdmaChannel* FindChannel(const string& key);
+  void SetupChannels();
+  const string& local_worker() { return local_worker_; }
+
+ private:
+  string local_worker_;
+  size_t num_remote_workers_;
+  const WorkerEnv* const worker_env_;
+  GrpcChannelCache* const channel_cache_;
+  RdmaAdapter* rdma_adapter_;
+  typedef std::unordered_map<string, RdmaChannel*> ChannelTable;
+  ChannelTable channel_table_;
+
+  TF_DISALLOW_COPY_AND_ASSIGN(RdmaMgr);
+};
+
+}  // namespace tensorflow
+
+#endif  // TENSORFLOW_USE_VERBS
+#endif  // THIRD_PARTY_TENSORFLOW_CONTRIB_VERBS_RDMA_MGR_H_