1 files changed, 0 insertions, 192 deletions
diff --git a/common/device/com/android/net/module/util/ip/IpNeighborMonitor.java b/common/device/com/android/net/module/util/ip/IpNeighborMonitor.java
deleted file mode 100644
index e88e7f0c..00000000
--- a/common/device/com/android/net/module/util/ip/IpNeighborMonitor.java
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.net.module.util.ip;
-
-import static android.system.OsConstants.NETLINK_ROUTE;
-
-import static com.android.net.module.util.netlink.NetlinkConstants.RTM_DELNEIGH;
-import static com.android.net.module.util.netlink.NetlinkConstants.hexify;
-import static com.android.net.module.util.netlink.NetlinkConstants.stringForNlMsgType;
-
-import android.annotation.NonNull;
-import android.net.MacAddress;
-import android.os.Handler;
-import android.system.ErrnoException;
-import android.system.OsConstants;
-import android.util.Log;
-
-import com.android.net.module.util.SharedLog;
-import com.android.net.module.util.netlink.NetlinkMessage;
-import com.android.net.module.util.netlink.NetlinkUtils;
-import com.android.net.module.util.netlink.RtNetlinkNeighborMessage;
-import com.android.net.module.util.netlink.StructNdMsg;
-
-import java.net.InetAddress;
-import java.util.StringJoiner;
-
-/**
- * IpNeighborMonitor.
- *
- * Monitors the kernel rtnetlink neighbor notifications and presents to callers
- * NeighborEvents describing each event. Callers can provide a consumer instance
- * to both filter (e.g. by interface index and IP address) and handle the
- * generated NeighborEvents.
- *
- * @hide
- */
-public class IpNeighborMonitor extends NetlinkMonitor {
-    private static final String TAG = IpNeighborMonitor.class.getSimpleName();
-    private static final boolean DBG = false;
-    private static final boolean VDBG = false;
-
-    /**
-     * Make the kernel perform neighbor reachability detection (IPv4 ARP or IPv6 ND)
-     * for the given IP address on the specified interface index.
-     *
-     * @return 0 if the request was successfully passed to the kernel; otherwise return
-     *         a non-zero error code.
-     */
-    public static int startKernelNeighborProbe(int ifIndex, InetAddress ip) {
-        final String msgSnippet = "probing ip=" + ip.getHostAddress() + "%" + ifIndex;
-        if (DBG) Log.d(TAG, msgSnippet);
-
-        final byte[] msg = RtNetlinkNeighborMessage.newNewNeighborMessage(
-                1, ip, StructNdMsg.NUD_PROBE, ifIndex, null);
-
-        try {
-            NetlinkUtils.sendOneShotKernelMessage(NETLINK_ROUTE, msg);
-        } catch (ErrnoException e) {
-            Log.e(TAG, "Error " + msgSnippet + ": " + e);
-            return -e.errno;
-        }
-
-        return 0;
-    }
-
-    /**
-     * An event about a neighbor.
-     */
-    public static class NeighborEvent {
-        public final long elapsedMs;
-        public final short msgType;
-        public final int ifindex;
-        @NonNull
-        public final InetAddress ip;
-        public final short nudState;
-        @NonNull
-        public final MacAddress macAddr;
-
-        public NeighborEvent(long elapsedMs, short msgType, int ifindex, @NonNull InetAddress ip,
-                short nudState, @NonNull MacAddress macAddr) {
-            this.elapsedMs = elapsedMs;
-            this.msgType = msgType;
-            this.ifindex = ifindex;
-            this.ip = ip;
-            this.nudState = nudState;
-            this.macAddr = macAddr;
-        }
-
-        boolean isConnected() {
-            return (msgType != RTM_DELNEIGH) && StructNdMsg.isNudStateConnected(nudState);
-        }
-
-        public boolean isValid() {
-            return (msgType != RTM_DELNEIGH) && StructNdMsg.isNudStateValid(nudState);
-        }
-
-        @Override
-        public String toString() {
-            final StringJoiner j = new StringJoiner(",", "NeighborEvent{", "}");
-            return j.add("@" + elapsedMs)
-                    .add(stringForNlMsgType(msgType, NETLINK_ROUTE))
-                    .add("if=" + ifindex)
-                    .add(ip.getHostAddress())
-                    .add(StructNdMsg.stringForNudState(nudState))
-                    .add("[" + macAddr + "]")
-                    .toString();
-        }
-    }
-
-    /**
-     * A client that consumes NeighborEvent instances.
-     * Implement this to listen to neighbor events.
-     */
-    public interface NeighborEventConsumer {
-        // Every neighbor event received on the netlink socket is passed in
-        // here. Subclasses should filter for events of interest.
-        /**
-         * Consume a neighbor event
-         * @param event the event
-         */
-        void accept(NeighborEvent event);
-    }
-
-    private final NeighborEventConsumer mConsumer;
-
-    public IpNeighborMonitor(Handler h, SharedLog log, NeighborEventConsumer cb) {
-        super(h, log, TAG, NETLINK_ROUTE, OsConstants.RTMGRP_NEIGH);
-        mConsumer = (cb != null) ? cb : (event) -> { /* discard */ };
-    }
-
-    @Override
-    public void processNetlinkMessage(NetlinkMessage nlMsg, final long whenMs) {
-        if (!(nlMsg instanceof RtNetlinkNeighborMessage)) {
-            mLog.e("non-rtnetlink neighbor msg: " + nlMsg);
-            return;
-        }
-
-        final RtNetlinkNeighborMessage neighMsg = (RtNetlinkNeighborMessage) nlMsg;
-        final short msgType = neighMsg.getHeader().nlmsg_type;
-        final StructNdMsg ndMsg = neighMsg.getNdHeader();
-        if (ndMsg == null) {
-            mLog.e("RtNetlinkNeighborMessage without ND message header!");
-            return;
-        }
-
-        final int ifindex = ndMsg.ndm_ifindex;
-        final InetAddress destination = neighMsg.getDestination();
-        final short nudState =
-                (msgType == RTM_DELNEIGH)
-                ? StructNdMsg.NUD_NONE
-                : ndMsg.ndm_state;
-
-        final NeighborEvent event = new NeighborEvent(
-                whenMs, msgType, ifindex, destination, nudState,
-                getMacAddress(neighMsg.getLinkLayerAddress()));
-
-        if (VDBG) {
-            Log.d(TAG, neighMsg.toString());
-        }
-        if (DBG) {
-            Log.d(TAG, event.toString());
-        }
-
-        mConsumer.accept(event);
-    }
-
-    private static MacAddress getMacAddress(byte[] linkLayerAddress) {
-        if (linkLayerAddress != null) {
-            try {
-                return MacAddress.fromBytes(linkLayerAddress);
-            } catch (IllegalArgumentException e) {
-                Log.e(TAG, "Failed to parse link-layer address: " + hexify(linkLayerAddress));
-            }
-        }
-
-        return null;
-    }
-}