diff --git a/wifi_offload/chre_interface_callbacks.h b/wifi_offload/chre_interface_callbacks.h
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+++ b/wifi_offload/chre_interface_callbacks.h
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+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * 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 WIFI_OFFLOAD_CHRE_INTERFACE_CALLBACKS_H
+#define WIFI_OFFLOAD_CHRE_INTERFACE_CALLBACKS_H
+
+#include <cstdint>
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace offload {
+namespace V1_0 {
+namespace implementation {
+
+class ChreInterfaceCallbacks {
+  public:
+    enum ConnectionEvent { CONNECTED, DISCONNECTED, CONNECTION_ABORT };
+    virtual ~ChreInterfaceCallbacks() {}
+
+    /* Invoked by the Chre interface when connection events are received */
+    virtual void handleConnectionEvents(ConnectionEvent event) = 0;
+    /* Invoked by the Chre interface when a message is recieved from Nano app */
+    virtual void handleMessage(uint32_t messageType, const std::vector<uint8_t>& message) = 0;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace offload
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+#endif  // WIFI_OFFLOAD_CHRE_INTERFACE_CALLBACKS_H