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 android.net.MacAddress; 20 21 import androidx.annotation.NonNull; 22 23 import com.android.net.module.util.Struct; 24 25 import java.util.Objects; 26 27 /** Value type for downstream and upstream IPv6 forwarding maps. */ 28 public class Tether6Value extends Struct { 29 @Field(order = 0, type = Type.S32) 30 public final int oif; // The output interface index. 31 32 // The ethhdr struct which is defined in uapi/linux/if_ether.h 33 @Field(order = 1, type = Type.EUI48) 34 public final MacAddress ethDstMac; // The destination mac address. 35 @Field(order = 2, type = Type.EUI48) 36 public final MacAddress ethSrcMac; // The source mac address. 37 @Field(order = 3, type = Type.UBE16) 38 public final int ethProto; // Packet type ID field. 39 40 @Field(order = 4, type = Type.U16) 41 public final int pmtu; // The maximum L3 output path/route mtu. 42 Tether6Value(final int oif, @NonNull final MacAddress ethDstMac, @NonNull final MacAddress ethSrcMac, final int ethProto, final int pmtu)43 public Tether6Value(final int oif, @NonNull final MacAddress ethDstMac, 44 @NonNull final MacAddress ethSrcMac, final int ethProto, final int pmtu) { 45 Objects.requireNonNull(ethSrcMac); 46 Objects.requireNonNull(ethDstMac); 47 48 this.oif = oif; 49 this.ethDstMac = ethDstMac; 50 this.ethSrcMac = ethSrcMac; 51 this.ethProto = ethProto; 52 this.pmtu = pmtu; 53 } 54 55 @Override toString()56 public String toString() { 57 return String.format("oif: %d, dstMac: %s, srcMac: %s, proto: %d, pmtu: %d", oif, 58 ethDstMac, ethSrcMac, ethProto, pmtu); 59 } 60 } 61