1 /* 2 * Copyright (C) 2020 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 com.android.networkstack.tethering; 18 19 import com.android.net.module.util.Struct; 20 import com.android.net.module.util.Struct.Field; 21 import com.android.net.module.util.Struct.Type; 22 23 /** The value of BpfMap which is used for tethering per-interface limit. */ 24 public class TetherLimitValue extends Struct { 25 // Use the signed long variable to store the int64 limit on limit BPF map. 26 // S64 is enough for each interface limit even at 5Gbps for ~468 years. 27 // 2^63 / (5 * 1000 * 1000 * 1000) * 8 / 86400 / 365 = 468. 28 // Note that QUOTA_UNLIMITED (-1) indicates there is no limit. 29 @Field(order = 0, type = Type.S64) 30 public final long limit; 31 TetherLimitValue(final long limit)32 public TetherLimitValue(final long limit) { 33 this.limit = limit; 34 } 35 36 // TODO: remove equals, hashCode and toString once aosp/1536721 is merged. 37 @Override equals(Object obj)38 public boolean equals(Object obj) { 39 if (this == obj) return true; 40 41 if (!(obj instanceof TetherLimitValue)) return false; 42 43 final TetherLimitValue that = (TetherLimitValue) obj; 44 45 return limit == that.limit; 46 } 47 48 @Override hashCode()49 public int hashCode() { 50 return Long.hashCode(limit); 51 } 52 53 @Override toString()54 public String toString() { 55 return String.format("limit: %d", limit); 56 } 57 } 58