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 /** Key type for upstream IPv6 forwarding map. */
28 public class TetherUpstream6Key extends Struct {
29     @Field(order = 0, type = Type.S32)
30     public final int iif; // The input interface index.
31 
32     @Field(order = 1, type = Type.EUI48, padding = 6)
33     public final MacAddress dstMac; // Destination ethernet mac address (zeroed iff rawip ingress).
34 
35     @Field(order = 2, type = Type.ByteArray, arraysize = 8)
36     public final byte[] src64; // The top 64-bits of the source ip.
37 
TetherUpstream6Key(int iif, @NonNull final MacAddress dstMac, final byte[] src64)38     public TetherUpstream6Key(int iif, @NonNull final MacAddress dstMac, final byte[] src64) {
39         Objects.requireNonNull(dstMac);
40 
41         this.iif = iif;
42         this.dstMac = dstMac;
43         this.src64 = src64;
44     }
45 }
46