Thomas Vachuska | 4f1a60c | 2014-10-28 13:39:07 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | 5ab426f | 2016-04-09 01:19:45 -0700 | [diff] [blame] | 2 | * Copyright 2014-present Open Networking Laboratory |
Thomas Vachuska | 4f1a60c | 2014-10-28 13:39:07 -0700 | [diff] [blame] | 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 | */ |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 16 | package org.onosproject.net.host.impl; |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 17 | |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 18 | import org.jboss.netty.util.Timeout; |
| 19 | import org.jboss.netty.util.TimerTask; |
Jonathan Hart | 6cd2f35 | 2015-01-13 17:44:45 -0800 | [diff] [blame] | 20 | import org.onlab.packet.ARP; |
| 21 | import org.onlab.packet.Ethernet; |
Pavlin Radoslavov | 89edb54 | 2015-02-23 13:50:29 -0800 | [diff] [blame] | 22 | import org.onlab.packet.IPv6; |
Jonathan Hart | 4cb3988 | 2015-08-12 23:50:55 -0400 | [diff] [blame] | 23 | import org.onlab.packet.IpAddress; |
Jonathan Hart | 6cd2f35 | 2015-01-13 17:44:45 -0800 | [diff] [blame] | 24 | import org.onlab.packet.MacAddress; |
| 25 | import org.onlab.packet.VlanId; |
Pavlin Radoslavov | 89edb54 | 2015-02-23 13:50:29 -0800 | [diff] [blame] | 26 | import org.onlab.packet.ndp.NeighborSolicitation; |
Jonathan Hart | 6cd2f35 | 2015-01-13 17:44:45 -0800 | [diff] [blame] | 27 | import org.onlab.util.Timer; |
Jonathan Hart | 4cb3988 | 2015-08-12 23:50:55 -0400 | [diff] [blame] | 28 | import org.onosproject.incubator.net.intf.InterfaceService; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 29 | import org.onosproject.net.ConnectPoint; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 30 | import org.onosproject.net.Host; |
Jonathan Hart | fb32a6e | 2015-09-01 12:12:14 +0200 | [diff] [blame] | 31 | import org.onosproject.net.edge.EdgePortService; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 32 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 33 | import org.onosproject.net.flow.TrafficTreatment; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 34 | import org.onosproject.net.host.HostProvider; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 35 | import org.onosproject.net.packet.DefaultOutboundPacket; |
| 36 | import org.onosproject.net.packet.OutboundPacket; |
| 37 | import org.onosproject.net.packet.PacketService; |
| 38 | import org.onosproject.net.provider.ProviderId; |
Jonathan Hart | fb32a6e | 2015-09-01 12:12:14 +0200 | [diff] [blame] | 39 | import org.slf4j.Logger; |
| 40 | import org.slf4j.LoggerFactory; |
Jonathan Hart | 6cd2f35 | 2015-01-13 17:44:45 -0800 | [diff] [blame] | 41 | |
| 42 | import java.nio.ByteBuffer; |
Jonathan Hart | 6cd2f35 | 2015-01-13 17:44:45 -0800 | [diff] [blame] | 43 | import java.util.Collections; |
Jonathan Hart | 6cd2f35 | 2015-01-13 17:44:45 -0800 | [diff] [blame] | 44 | import java.util.Set; |
| 45 | import java.util.concurrent.ConcurrentHashMap; |
| 46 | import java.util.concurrent.ConcurrentMap; |
| 47 | import java.util.concurrent.TimeUnit; |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 48 | |
Jonathan Hart | 87fbbad | 2014-09-23 08:43:50 -0700 | [diff] [blame] | 49 | /** |
| 50 | * Monitors hosts on the dataplane to detect changes in host data. |
Thomas Vachuska | 4b42077 | 2014-10-30 16:46:17 -0700 | [diff] [blame] | 51 | * <p> |
Jonathan Hart | 87fbbad | 2014-09-23 08:43:50 -0700 | [diff] [blame] | 52 | * The HostMonitor can monitor hosts that have already been detected for |
| 53 | * changes. At an application's request, it can also monitor and actively |
| 54 | * probe for hosts that have not yet been detected (specified by IP address). |
Thomas Vachuska | 4b42077 | 2014-10-30 16:46:17 -0700 | [diff] [blame] | 55 | * </p> |
Jonathan Hart | 87fbbad | 2014-09-23 08:43:50 -0700 | [diff] [blame] | 56 | */ |
tom | 202175a | 2014-09-19 19:00:11 -0700 | [diff] [blame] | 57 | public class HostMonitor implements TimerTask { |
Jonathan Hart | fb32a6e | 2015-09-01 12:12:14 +0200 | [diff] [blame] | 58 | |
| 59 | private Logger log = LoggerFactory.getLogger(getClass()); |
| 60 | |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 61 | private PacketService packetService; |
| 62 | private HostManager hostManager; |
Jonathan Hart | 4cb3988 | 2015-08-12 23:50:55 -0400 | [diff] [blame] | 63 | private InterfaceService interfaceService; |
Jonathan Hart | fb32a6e | 2015-09-01 12:12:14 +0200 | [diff] [blame] | 64 | private EdgePortService edgePortService; |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 65 | |
Jonathan Hart | 87fbbad | 2014-09-23 08:43:50 -0700 | [diff] [blame] | 66 | private final Set<IpAddress> monitoredAddresses; |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 67 | |
Jonathan Hart | 34ed2fd | 2014-10-02 19:08:55 -0700 | [diff] [blame] | 68 | private final ConcurrentMap<ProviderId, HostProvider> hostProviders; |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 69 | |
Jonathan Hart | 34ed2fd | 2014-10-02 19:08:55 -0700 | [diff] [blame] | 70 | private static final long DEFAULT_PROBE_RATE = 30000; // milliseconds |
Yuta HIGUCHI | 3e848a8 | 2014-11-02 20:19:42 -0800 | [diff] [blame] | 71 | private static final byte[] ZERO_MAC_ADDRESS = MacAddress.ZERO.toBytes(); |
Jonathan Hart | 34ed2fd | 2014-10-02 19:08:55 -0700 | [diff] [blame] | 72 | private long probeRate = DEFAULT_PROBE_RATE; |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 73 | |
Jonathan Hart | 8f6f1ea | 2014-10-03 16:05:19 -0700 | [diff] [blame] | 74 | private Timeout timeout; |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 75 | |
Jonathan Hart | 8f6f1ea | 2014-10-03 16:05:19 -0700 | [diff] [blame] | 76 | /** |
| 77 | * Creates a new host monitor. |
| 78 | * |
Jonathan Hart | 8f6f1ea | 2014-10-03 16:05:19 -0700 | [diff] [blame] | 79 | * @param packetService packet service used to send packets on the data plane |
Jonathan Hart | b4758a9 | 2014-09-24 10:46:45 -0700 | [diff] [blame] | 80 | * @param hostManager host manager used to look up host information and |
| 81 | * probe existing hosts |
Jonathan Hart | 4cb3988 | 2015-08-12 23:50:55 -0400 | [diff] [blame] | 82 | * @param interfaceService interface service for interface information |
Thomas Vachuska | 0ae4560 | 2015-09-22 17:06:19 -0700 | [diff] [blame] | 83 | * @param edgePortService edge port service |
Jonathan Hart | 8f6f1ea | 2014-10-03 16:05:19 -0700 | [diff] [blame] | 84 | */ |
Jonathan Hart | 4cb3988 | 2015-08-12 23:50:55 -0400 | [diff] [blame] | 85 | public HostMonitor(PacketService packetService, HostManager hostManager, |
Jonathan Hart | fb32a6e | 2015-09-01 12:12:14 +0200 | [diff] [blame] | 86 | InterfaceService interfaceService, |
| 87 | EdgePortService edgePortService) { |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 88 | |
Jonathan Hart | 87fbbad | 2014-09-23 08:43:50 -0700 | [diff] [blame] | 89 | this.packetService = packetService; |
Jonathan Hart | b4758a9 | 2014-09-24 10:46:45 -0700 | [diff] [blame] | 90 | this.hostManager = hostManager; |
Jonathan Hart | 4cb3988 | 2015-08-12 23:50:55 -0400 | [diff] [blame] | 91 | this.interfaceService = interfaceService; |
Jonathan Hart | fb32a6e | 2015-09-01 12:12:14 +0200 | [diff] [blame] | 92 | this.edgePortService = edgePortService; |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 93 | |
Jonathan Hart | 4cb3988 | 2015-08-12 23:50:55 -0400 | [diff] [blame] | 94 | monitoredAddresses = Collections.newSetFromMap(new ConcurrentHashMap<>()); |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 95 | hostProviders = new ConcurrentHashMap<>(); |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 96 | } |
| 97 | |
Jonathan Hart | 8f6f1ea | 2014-10-03 16:05:19 -0700 | [diff] [blame] | 98 | /** |
| 99 | * Adds an IP address to be monitored by the host monitor. The monitor will |
| 100 | * periodically probe the host to detect changes. |
| 101 | * |
| 102 | * @param ip IP address of the host to monitor |
| 103 | */ |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 104 | void addMonitoringFor(IpAddress ip) { |
Jonathan Hart | f4edb31 | 2017-03-24 10:43:10 -0700 | [diff] [blame] | 105 | if (monitoredAddresses.add(ip)) { |
| 106 | probe(ip); |
| 107 | } |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 108 | } |
| 109 | |
Jonathan Hart | 8f6f1ea | 2014-10-03 16:05:19 -0700 | [diff] [blame] | 110 | /** |
| 111 | * Stops monitoring the given IP address. |
| 112 | * |
| 113 | * @param ip IP address to stop monitoring on |
| 114 | */ |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 115 | void stopMonitoring(IpAddress ip) { |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 116 | monitoredAddresses.remove(ip); |
| 117 | } |
| 118 | |
Jonathan Hart | 8f6f1ea | 2014-10-03 16:05:19 -0700 | [diff] [blame] | 119 | /** |
| 120 | * Starts the host monitor. Does nothing if the monitor is already running. |
| 121 | */ |
| 122 | void start() { |
| 123 | synchronized (this) { |
| 124 | if (timeout == null) { |
| 125 | timeout = Timer.getTimer().newTimeout(this, 0, TimeUnit.MILLISECONDS); |
| 126 | } |
| 127 | } |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 128 | } |
| 129 | |
Jonathan Hart | 8f6f1ea | 2014-10-03 16:05:19 -0700 | [diff] [blame] | 130 | /** |
| 131 | * Stops the host monitor. |
| 132 | */ |
| 133 | void shutdown() { |
| 134 | synchronized (this) { |
| 135 | timeout.cancel(); |
| 136 | timeout = null; |
| 137 | } |
| 138 | } |
| 139 | |
sdn | 94b0015 | 2016-08-30 02:12:32 -0700 | [diff] [blame] | 140 | /* |
| 141 | * Sets the probe rate. |
| 142 | */ |
| 143 | void setProbeRate(long probeRate) { |
| 144 | this.probeRate = probeRate; |
| 145 | } |
| 146 | |
Jonathan Hart | 8f6f1ea | 2014-10-03 16:05:19 -0700 | [diff] [blame] | 147 | /** |
| 148 | * Registers a host provider with the host monitor. The monitor can use the |
| 149 | * provider to probe hosts. |
| 150 | * |
| 151 | * @param provider the host provider to register |
| 152 | */ |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 153 | void registerHostProvider(HostProvider provider) { |
| 154 | hostProviders.put(provider.id(), provider); |
| 155 | } |
| 156 | |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 157 | @Override |
| 158 | public void run(Timeout timeout) throws Exception { |
Jonathan Hart | 78613d2 | 2016-07-27 11:25:29 -0700 | [diff] [blame] | 159 | monitoredAddresses.forEach(this::probe); |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 160 | |
Satish K | e9d748f | 2015-11-24 19:05:01 +0530 | [diff] [blame] | 161 | synchronized (this) { |
| 162 | this.timeout = Timer.getTimer().newTimeout(this, probeRate, TimeUnit.MILLISECONDS); |
| 163 | } |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 164 | } |
| 165 | |
Jonathan Hart | 78613d2 | 2016-07-27 11:25:29 -0700 | [diff] [blame] | 166 | private void probe(IpAddress ip) { |
| 167 | Set<Host> hosts = hostManager.getHostsByIp(ip); |
| 168 | |
| 169 | if (hosts.isEmpty()) { |
| 170 | sendRequest(ip); |
| 171 | } else { |
| 172 | for (Host host : hosts) { |
| 173 | HostProvider provider = hostProviders.get(host.providerId()); |
| 174 | if (provider == null) { |
| 175 | hostProviders.remove(host.providerId(), null); |
| 176 | } else { |
| 177 | provider.triggerProbe(host); |
| 178 | } |
| 179 | } |
| 180 | } |
| 181 | } |
| 182 | |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 183 | /** |
Jonathan Hart | 39ee648 | 2015-08-31 16:00:19 +0200 | [diff] [blame] | 184 | * Sends an ARP or NDP request for the given IP address. |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 185 | * |
Pavlin Radoslavov | 89edb54 | 2015-02-23 13:50:29 -0800 | [diff] [blame] | 186 | * @param targetIp IP address to send the request for |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 187 | */ |
Jonathan Hart | 39ee648 | 2015-08-31 16:00:19 +0200 | [diff] [blame] | 188 | private void sendRequest(IpAddress targetIp) { |
Charles Chan | 9238b38 | 2017-03-14 13:14:58 -0700 | [diff] [blame] | 189 | interfaceService.getMatchingInterfaces(targetIp).forEach(intf -> { |
| 190 | if (!edgePortService.isEdgePoint(intf.connectPoint())) { |
| 191 | log.warn("Aborting attempt to send probe out non-edge port: {}", intf); |
| 192 | return; |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 193 | } |
Charles Chan | 9238b38 | 2017-03-14 13:14:58 -0700 | [diff] [blame] | 194 | |
| 195 | intf.ipAddressesList().stream() |
| 196 | .filter(ia -> ia.subnetAddress().contains(targetIp)) |
| 197 | .forEach(ia -> { |
Jonathan Hart | f4edb31 | 2017-03-24 10:43:10 -0700 | [diff] [blame] | 198 | log.debug("Sending probe for target:{} out of intf:{} vlan:{}", |
Charles Chan | 9238b38 | 2017-03-14 13:14:58 -0700 | [diff] [blame] | 199 | targetIp, intf.connectPoint(), intf.vlan()); |
| 200 | sendProbe(intf.connectPoint(), targetIp, ia.ipAddress(), |
| 201 | intf.mac(), intf.vlan()); |
| 202 | // account for use-cases where tagged-vlan config is used |
| 203 | if (!intf.vlanTagged().isEmpty()) { |
| 204 | intf.vlanTagged().forEach(tag -> { |
Jonathan Hart | f4edb31 | 2017-03-24 10:43:10 -0700 | [diff] [blame] | 205 | log.debug("Sending probe for target:{} out of intf:{} vlan:{}", |
Charles Chan | 9238b38 | 2017-03-14 13:14:58 -0700 | [diff] [blame] | 206 | targetIp, intf.connectPoint(), tag); |
| 207 | sendProbe(intf.connectPoint(), targetIp, ia.ipAddress(), |
| 208 | intf.mac(), tag); |
| 209 | }); |
| 210 | } |
| 211 | }); |
| 212 | }); |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 213 | } |
| 214 | |
Pier Luigi | 9b1d626 | 2017-02-02 22:31:34 -0800 | [diff] [blame] | 215 | public void sendProbe(ConnectPoint connectPoint, |
| 216 | IpAddress targetIp, |
| 217 | IpAddress sourceIp, |
| 218 | MacAddress sourceMac, |
| 219 | VlanId vlan) { |
Pier Ventre | 78e73f6 | 2016-12-02 19:59:28 -0800 | [diff] [blame] | 220 | Ethernet probePacket; |
Pavlin Radoslavov | 89edb54 | 2015-02-23 13:50:29 -0800 | [diff] [blame] | 221 | |
Pavlin Radoslavov | 87dd930 | 2015-03-10 13:53:24 -0700 | [diff] [blame] | 222 | if (targetIp.isIp4()) { |
Pavlin Radoslavov | 89edb54 | 2015-02-23 13:50:29 -0800 | [diff] [blame] | 223 | // IPv4: Use ARP |
Jonathan Hart | 39ee648 | 2015-08-31 16:00:19 +0200 | [diff] [blame] | 224 | probePacket = buildArpRequest(targetIp, sourceIp, sourceMac, vlan); |
Pavlin Radoslavov | 89edb54 | 2015-02-23 13:50:29 -0800 | [diff] [blame] | 225 | } else { |
Pier Luigi | 9b1d626 | 2017-02-02 22:31:34 -0800 | [diff] [blame] | 226 | // IPv6: Use Neighbor Discovery. According to the NDP protocol, |
| 227 | // we should use the solicitation node address as IPv6 destination |
| 228 | // and the multicast mac address as Ethernet destination. |
Pier Luigi | 37b687b | 2017-01-16 22:46:33 -0800 | [diff] [blame] | 229 | byte[] destIp = IPv6.getSolicitNodeAddress(targetIp.toOctets()); |
Pier Ventre | 78e73f6 | 2016-12-02 19:59:28 -0800 | [diff] [blame] | 230 | probePacket = NeighborSolicitation.buildNdpSolicit( |
| 231 | targetIp.toOctets(), |
| 232 | sourceIp.toOctets(), |
| 233 | destIp, |
| 234 | sourceMac.toBytes(), |
Pier Luigi | 37b687b | 2017-01-16 22:46:33 -0800 | [diff] [blame] | 235 | IPv6.getMCastMacAddress(destIp), |
Pier Ventre | 78e73f6 | 2016-12-02 19:59:28 -0800 | [diff] [blame] | 236 | vlan |
| 237 | ); |
| 238 | } |
| 239 | |
| 240 | if (probePacket == null) { |
| 241 | log.warn("Not able to build the probe packet"); |
| 242 | return; |
Pavlin Radoslavov | 89edb54 | 2015-02-23 13:50:29 -0800 | [diff] [blame] | 243 | } |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 244 | |
tom | 9a693fd | 2014-10-03 11:32:19 -0700 | [diff] [blame] | 245 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
Jonathan Hart | 4cb3988 | 2015-08-12 23:50:55 -0400 | [diff] [blame] | 246 | .setOutput(connectPoint.port()) |
Pavlin Radoslavov | 89edb54 | 2015-02-23 13:50:29 -0800 | [diff] [blame] | 247 | .build(); |
Jonathan Hart | 87fbbad | 2014-09-23 08:43:50 -0700 | [diff] [blame] | 248 | |
| 249 | OutboundPacket outboundPacket = |
Jonathan Hart | 4cb3988 | 2015-08-12 23:50:55 -0400 | [diff] [blame] | 250 | new DefaultOutboundPacket(connectPoint.deviceId(), treatment, |
Pavlin Radoslavov | 89edb54 | 2015-02-23 13:50:29 -0800 | [diff] [blame] | 251 | ByteBuffer.wrap(probePacket.serialize())); |
Jonathan Hart | 87fbbad | 2014-09-23 08:43:50 -0700 | [diff] [blame] | 252 | |
| 253 | packetService.emit(outboundPacket); |
| 254 | } |
| 255 | |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 256 | private Ethernet buildArpRequest(IpAddress targetIp, IpAddress sourceIp, |
Pavlin Radoslavov | 89edb54 | 2015-02-23 13:50:29 -0800 | [diff] [blame] | 257 | MacAddress sourceMac, VlanId vlan) { |
Jonathan Hart | 87fbbad | 2014-09-23 08:43:50 -0700 | [diff] [blame] | 258 | |
| 259 | ARP arp = new ARP(); |
| 260 | arp.setHardwareType(ARP.HW_TYPE_ETHERNET) |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 261 | .setHardwareAddressLength((byte) Ethernet.DATALAYER_ADDRESS_LENGTH) |
| 262 | .setProtocolType(ARP.PROTO_TYPE_IP) |
Pavlin Radoslavov | 52307e6 | 2014-10-29 15:07:37 -0700 | [diff] [blame] | 263 | .setProtocolAddressLength((byte) IpAddress.INET_BYTE_LENGTH) |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 264 | .setOpCode(ARP.OP_REQUEST); |
Jonathan Hart | 87fbbad | 2014-09-23 08:43:50 -0700 | [diff] [blame] | 265 | |
Yuta HIGUCHI | 3e848a8 | 2014-11-02 20:19:42 -0800 | [diff] [blame] | 266 | arp.setSenderHardwareAddress(sourceMac.toBytes()) |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 267 | .setSenderProtocolAddress(sourceIp.toOctets()) |
Yuta HIGUCHI | 3e848a8 | 2014-11-02 20:19:42 -0800 | [diff] [blame] | 268 | .setTargetHardwareAddress(ZERO_MAC_ADDRESS) |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 269 | .setTargetProtocolAddress(targetIp.toOctets()); |
Jonathan Hart | 87fbbad | 2014-09-23 08:43:50 -0700 | [diff] [blame] | 270 | |
| 271 | Ethernet ethernet = new Ethernet(); |
| 272 | ethernet.setEtherType(Ethernet.TYPE_ARP) |
Yuta HIGUCHI | 3e848a8 | 2014-11-02 20:19:42 -0800 | [diff] [blame] | 273 | .setDestinationMACAddress(MacAddress.BROADCAST) |
| 274 | .setSourceMACAddress(sourceMac) |
Jonathan Hart | 70da512 | 2014-10-01 16:37:42 -0700 | [diff] [blame] | 275 | .setPayload(arp); |
Jonathan Hart | 87fbbad | 2014-09-23 08:43:50 -0700 | [diff] [blame] | 276 | |
Jonathan Hart | 6cd2f35 | 2015-01-13 17:44:45 -0800 | [diff] [blame] | 277 | if (!vlan.equals(VlanId.NONE)) { |
| 278 | ethernet.setVlanID(vlan.toShort()); |
| 279 | } |
| 280 | |
alshabib | af734ff | 2015-07-01 16:35:26 -0700 | [diff] [blame] | 281 | ethernet.setPad(true); |
| 282 | |
Jonathan Hart | 87fbbad | 2014-09-23 08:43:50 -0700 | [diff] [blame] | 283 | return ethernet; |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 284 | } |
Pavlin Radoslavov | 89edb54 | 2015-02-23 13:50:29 -0800 | [diff] [blame] | 285 | |
Jonathan Hart | fca736c | 2014-09-19 17:26:59 -0700 | [diff] [blame] | 286 | } |