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 android.net.ip; 18 19 import android.os.Handler; 20 21 import androidx.annotation.VisibleForTesting; 22 23 import com.android.net.module.util.InterfaceParams; 24 25 /** 26 * Basic Duplicate address detection proxy. 27 * 28 * @hide 29 */ 30 public class DadProxy { 31 private static final String TAG = DadProxy.class.getSimpleName(); 32 33 @VisibleForTesting 34 public static NeighborPacketForwarder naForwarder; 35 public static NeighborPacketForwarder nsForwarder; 36 DadProxy(Handler h, InterfaceParams tetheredIface)37 public DadProxy(Handler h, InterfaceParams tetheredIface) { 38 naForwarder = new NeighborPacketForwarder(h, tetheredIface, 39 NeighborPacketForwarder.ICMPV6_NEIGHBOR_ADVERTISEMENT); 40 nsForwarder = new NeighborPacketForwarder(h, tetheredIface, 41 NeighborPacketForwarder.ICMPV6_NEIGHBOR_SOLICITATION); 42 } 43 44 /** Stop NS/NA Forwarders. */ stop()45 public void stop() { 46 naForwarder.stop(); 47 nsForwarder.stop(); 48 } 49 50 /** Set upstream iface on both forwarders. */ setUpstreamIface(InterfaceParams upstreamIface)51 public void setUpstreamIface(InterfaceParams upstreamIface) { 52 naForwarder.setUpstreamIface(upstreamIface); 53 nsForwarder.setUpstreamIface(upstreamIface); 54 } 55 } 56