/*
 * 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.
 */

package android.hardware.tetheroffload.control@1.0;

/**
 * Callback providing information about status of hardware management process
 * as well as providing a way to keep offloaded connections from timing out.
 */
interface ITetheringOffloadCallback {
  /**
   * Called when an asynchronous event is generated by the hardware management
   * process.
   */
  oneway onEvent(OffloadCallbackEvent event);

  /**
   *  Provide a way for the management process to request that a connections
   *  timeout be updated in kernel.
   *
   *  This is necessary to ensure that offloaded traffic is not cleaned up
   *  by the kernel connection tracking module for IPv4.
   */
   oneway updateTimeout(NatTimeoutUpdate params);
};