1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.net; 18 19 import android.net.NetworkStats; 20 21 /** 22 * Interface for NetworkManagementService to query tethering statistics and set data limits. 23 * 24 * TODO: this does not really need to be an interface since Tethering runs in the same process 25 * as NetworkManagementService. Consider refactoring Tethering to use direct access to 26 * NetworkManagementService instead of using INetworkManagementService, and then deleting this 27 * interface. 28 * 29 * @hide 30 */ 31 interface ITetheringStatsProvider { 32 // Returns cumulative statistics for all tethering sessions since boot, on all upstreams. 33 // @code {how} is one of the NetworkStats.STATS_PER_* constants. If {@code how} is 34 // {@code STATS_PER_IFACE}, the provider should not include any traffic that is already 35 // counted by kernel interface counters. getTetherStats(int how)36 NetworkStats getTetherStats(int how); 37 38 // Sets the interface quota for the specified upstream interface. This is defined as the number 39 // of bytes, starting from zero and counting from now, after which data should stop being 40 // forwarded to/from the specified upstream. A value of QUOTA_UNLIMITED means there is no limit. setInterfaceQuota(String iface, long quotaBytes)41 void setInterfaceQuota(String iface, long quotaBytes); 42 43 // Indicates that no data usage limit is set. 44 const int QUOTA_UNLIMITED = -1; 45 } 46