Jonathan Hart | 0961fe8 | 2014-04-03 09:56:25 -0700 | [diff] [blame] | 1 | package net.onrc.onos.apps.proxyarp; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 2 | |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 3 | import java.net.InetAddress; |
| 4 | import java.net.UnknownHostException; |
TeruU | 7feef8a | 2014-04-03 00:15:49 -0700 | [diff] [blame] | 5 | import java.nio.ByteBuffer; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 6 | import java.util.ArrayList; |
| 7 | import java.util.Collection; |
Jonathan Hart | e93aed4 | 2013-12-05 18:39:50 -0800 | [diff] [blame] | 8 | import java.util.HashMap; |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 9 | import java.util.Iterator; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 10 | import java.util.List; |
| 11 | import java.util.Map; |
| 12 | import java.util.Set; |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 13 | import java.util.Timer; |
| 14 | import java.util.TimerTask; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 15 | |
Jonathan Hart | e93aed4 | 2013-12-05 18:39:50 -0800 | [diff] [blame] | 16 | import net.floodlightcontroller.core.module.FloodlightModuleContext; |
| 17 | import net.floodlightcontroller.core.module.IFloodlightModule; |
| 18 | import net.floodlightcontroller.core.module.IFloodlightService; |
Jonathan Hart | 5afde49 | 2013-10-01 12:30:53 +1300 | [diff] [blame] | 19 | import net.floodlightcontroller.restserver.IRestApiService; |
Jonathan Hart | 8ec133c | 2013-06-26 15:25:18 +1200 | [diff] [blame] | 20 | import net.floodlightcontroller.util.MACAddress; |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 21 | import net.onrc.onos.api.packet.IPacketListener; |
| 22 | import net.onrc.onos.api.packet.IPacketService; |
Yuta HIGUCHI | 238fa2a | 2014-05-01 09:56:46 -0700 | [diff] [blame] | 23 | import net.onrc.onos.apps.proxyarp.web.ArpWebRoutable; |
Jonathan Hart | 8f6dc09 | 2014-04-18 15:56:43 -0700 | [diff] [blame] | 24 | import net.onrc.onos.apps.sdnip.Interface; |
Jonathan Hart | 6df9017 | 2014-04-03 10:13:11 -0700 | [diff] [blame] | 25 | import net.onrc.onos.core.datagrid.IDatagridService; |
| 26 | import net.onrc.onos.core.datagrid.IEventChannel; |
| 27 | import net.onrc.onos.core.datagrid.IEventChannelListener; |
Jonathan Hart | 51f6f5b | 2014-04-03 10:32:10 -0700 | [diff] [blame] | 28 | import net.onrc.onos.core.main.config.IConfigInfoService; |
Jonathan Hart | deda0ba | 2014-04-03 11:14:12 -0700 | [diff] [blame] | 29 | import net.onrc.onos.core.packet.ARP; |
| 30 | import net.onrc.onos.core.packet.Ethernet; |
| 31 | import net.onrc.onos.core.packet.IPv4; |
Jonathan Hart | 472062d | 2014-04-03 10:56:48 -0700 | [diff] [blame] | 32 | import net.onrc.onos.core.topology.Device; |
Jonathan Hart | e37e4e2 | 2014-05-13 19:12:02 -0700 | [diff] [blame] | 33 | import net.onrc.onos.core.topology.ITopologyService; |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 34 | import net.onrc.onos.core.topology.Port; |
Jonathan Hart | 472062d | 2014-04-03 10:56:48 -0700 | [diff] [blame] | 35 | import net.onrc.onos.core.topology.Switch; |
Jonathan Hart | 5531658 | 2014-05-09 10:02:58 -0700 | [diff] [blame^] | 36 | import net.onrc.onos.core.topology.Topology; |
Jonathan Hart | 23701d1 | 2014-04-03 10:45:48 -0700 | [diff] [blame] | 37 | import net.onrc.onos.core.util.SwitchPort; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 38 | |
Jonathan Hart | 8ec133c | 2013-06-26 15:25:18 +1200 | [diff] [blame] | 39 | import org.openflow.util.HexString; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 40 | import org.slf4j.Logger; |
| 41 | import org.slf4j.LoggerFactory; |
| 42 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 43 | import com.google.common.collect.HashMultimap; |
| 44 | import com.google.common.collect.Multimaps; |
| 45 | import com.google.common.collect.SetMultimap; |
Jonathan Hart | 5531658 | 2014-05-09 10:02:58 -0700 | [diff] [blame^] | 46 | import com.google.common.net.InetAddresses; |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 47 | |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 48 | public class ProxyArpManager implements IProxyArpService, IFloodlightModule, |
| 49 | IPacketListener { |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 50 | private static final Logger log = LoggerFactory |
| 51 | .getLogger(ProxyArpManager.class); |
pingping-lin | 017a892 | 2013-12-11 11:15:33 +0800 | [diff] [blame] | 52 | |
Jonathan Hart | 5531658 | 2014-05-09 10:02:58 -0700 | [diff] [blame^] | 53 | private static long arpTimerPeriodConfig = 2000; // ms |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 54 | private static int arpRequestTimeoutConfig = 2000; // ms |
| 55 | private long arpCleaningTimerPeriodConfig = 60 * 1000; // ms (1 min) |
Jonathan Hart | da4d0e1 | 2013-09-30 21:00:20 +1300 | [diff] [blame] | 56 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 57 | private IDatagridService datagrid; |
TeruU | 7feef8a | 2014-04-03 00:15:49 -0700 | [diff] [blame] | 58 | private IEventChannel<Long, ArpReplyNotification> arpReplyEventChannel; |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 59 | private IEventChannel<String, ArpCacheNotification> arpCacheEventChannel; |
Pavlin Radoslavov | 902fe52 | 2014-03-31 10:11:31 -0700 | [diff] [blame] | 60 | private static final String ARP_REPLY_CHANNEL_NAME = "onos.arp_reply"; |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 61 | private static final String ARP_CACHE_CHANNEL_NAME = "onos.arp_cache"; |
| 62 | private final ArpReplyEventHandler arpReplyEventHandler = new ArpReplyEventHandler(); |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 63 | private final ArpCacheEventHandler arpCacheEventHandler = new ArpCacheEventHandler(); |
Pavlin Radoslavov | 902fe52 | 2014-03-31 10:11:31 -0700 | [diff] [blame] | 64 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 65 | private IConfigInfoService configService; |
| 66 | private IRestApiService restApi; |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 67 | |
Jonathan Hart | e37e4e2 | 2014-05-13 19:12:02 -0700 | [diff] [blame] | 68 | private ITopologyService topologyService; |
| 69 | private Topology topology; |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 70 | private IPacketService packetService; |
Jonathan Hart | e93aed4 | 2013-12-05 18:39:50 -0800 | [diff] [blame] | 71 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 72 | private short vlan; |
| 73 | private static final short NO_VLAN = 0; |
Jonathan Hart | e93aed4 | 2013-12-05 18:39:50 -0800 | [diff] [blame] | 74 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 75 | private SetMultimap<InetAddress, ArpRequest> arpRequests; |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 76 | |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 77 | private ArpCache arpCache; |
| 78 | |
Pavlin Radoslavov | 902fe52 | 2014-03-31 10:11:31 -0700 | [diff] [blame] | 79 | private class ArpReplyEventHandler implements |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 80 | IEventChannelListener<Long, ArpReplyNotification> { |
Pavlin Radoslavov | 902fe52 | 2014-03-31 10:11:31 -0700 | [diff] [blame] | 81 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 82 | @Override |
| 83 | public void entryAdded(ArpReplyNotification arpReply) { |
| 84 | log.debug("Received ARP reply notification for ip {}, mac {}", |
| 85 | arpReply.getTargetAddress(), arpReply.getTargetMacAddress()); |
Pavlin Radoslavov | 902fe52 | 2014-03-31 10:11:31 -0700 | [diff] [blame] | 86 | |
Jonathan Hart | 5531658 | 2014-05-09 10:02:58 -0700 | [diff] [blame^] | 87 | InetAddress addr = InetAddresses.fromInteger(arpReply.getTargetAddress()); |
| 88 | |
| 89 | sendArpReplyToWaitingRequesters(addr, |
| 90 | arpReply.getTargetMacAddress()); |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | @Override |
| 94 | public void entryUpdated(ArpReplyNotification arpReply) { |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 95 | entryAdded(arpReply); |
| 96 | } |
| 97 | |
| 98 | @Override |
| 99 | public void entryRemoved(ArpReplyNotification arpReply) { |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 100 | //Not implemented. ArpReplyEventHandler is used only for remote messaging. |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | private class ArpCacheEventHandler implements |
| 105 | IEventChannelListener<String, ArpCacheNotification> { |
| 106 | |
| 107 | /** |
| 108 | * Startup processing. |
| 109 | */ |
| 110 | private void startUp() { |
| 111 | // |
| 112 | // TODO: Read all state from the database: |
| 113 | // For now, as a shortcut we read it from the datagrid |
| 114 | // |
| 115 | Collection<ArpCacheNotification> arpCacheEvents = |
| 116 | arpCacheEventChannel.getAllEntries(); |
| 117 | |
| 118 | for (ArpCacheNotification arpCacheEvent : arpCacheEvents) { |
| 119 | entryAdded(arpCacheEvent); |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | @Override |
| 124 | public void entryAdded(ArpCacheNotification value) { |
| 125 | |
| 126 | try { |
| 127 | log.debug("Received entryAdded for ARP cache notification for ip {}, mac {}", |
| 128 | InetAddress.getByAddress(value.getTargetAddress()), value.getTargetMacAddress()); |
| 129 | arpCache.update(InetAddress.getByAddress(value.getTargetAddress()), MACAddress.valueOf(value.getTargetMacAddress())); |
| 130 | } catch (UnknownHostException e) { |
| 131 | log.error("Exception : ", e); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | @Override |
| 136 | public void entryRemoved(ArpCacheNotification value) { |
| 137 | log.debug("Received entryRemoved for ARP cache notification for ip {}, mac {}", |
| 138 | value.getTargetAddress(), value.getTargetMacAddress()); |
| 139 | try { |
| 140 | arpCache.remove(InetAddress.getByAddress(value.getTargetAddress())); |
| 141 | } catch (UnknownHostException e) { |
| 142 | log.error("Exception : ", e); |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | @Override |
| 147 | public void entryUpdated(ArpCacheNotification value) { |
| 148 | try { |
| 149 | log.debug("Received entryUpdated for ARP cache notification for ip {}, mac {}", |
| 150 | InetAddress.getByAddress(value.getTargetAddress()), value.getTargetMacAddress()); |
| 151 | arpCache.update(InetAddress.getByAddress(value.getTargetAddress()), MACAddress.valueOf(value.getTargetMacAddress())); |
| 152 | } catch (UnknownHostException e) { |
| 153 | log.error("Exception : ", e); |
| 154 | } |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 155 | } |
Pavlin Radoslavov | 902fe52 | 2014-03-31 10:11:31 -0700 | [diff] [blame] | 156 | } |
| 157 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 158 | private static class ArpRequest { |
| 159 | private final IArpRequester requester; |
| 160 | private final boolean retry; |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 161 | private long requestTime; |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 162 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 163 | public ArpRequest(IArpRequester requester, boolean retry) { |
| 164 | this.requester = requester; |
| 165 | this.retry = retry; |
Jonathan Hart | 5531658 | 2014-05-09 10:02:58 -0700 | [diff] [blame^] | 166 | |
| 167 | requestTime = System.currentTimeMillis(); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 168 | } |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 169 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 170 | public ArpRequest(ArpRequest old) { |
| 171 | this.requester = old.requester; |
| 172 | this.retry = old.retry; |
| 173 | } |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 174 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 175 | public boolean isExpired() { |
Jonathan Hart | 5531658 | 2014-05-09 10:02:58 -0700 | [diff] [blame^] | 176 | return ((System.currentTimeMillis() - requestTime) |
| 177 | > arpRequestTimeoutConfig); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 178 | } |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 179 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 180 | public boolean shouldRetry() { |
| 181 | return retry; |
| 182 | } |
| 183 | |
| 184 | public void dispatchReply(InetAddress ipAddress, |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 185 | MACAddress replyMacAddress) { |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 186 | requester.arpResponse(ipAddress, replyMacAddress); |
| 187 | } |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 188 | } |
| 189 | |
| 190 | private class HostArpRequester implements IArpRequester { |
| 191 | private final ARP arpRequest; |
| 192 | private final long dpid; |
| 193 | private final short port; |
| 194 | |
| 195 | public HostArpRequester(ARP arpRequest, long dpid, short port) { |
| 196 | this.arpRequest = arpRequest; |
| 197 | this.dpid = dpid; |
| 198 | this.port = port; |
| 199 | } |
| 200 | |
| 201 | @Override |
| 202 | public void arpResponse(InetAddress ipAddress, MACAddress macAddress) { |
| 203 | ProxyArpManager.this.sendArpReply(arpRequest, dpid, port, |
| 204 | macAddress); |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | @Override |
| 209 | public Collection<Class<? extends IFloodlightService>> getModuleServices() { |
| 210 | Collection<Class<? extends IFloodlightService>> l = |
| 211 | new ArrayList<Class<? extends IFloodlightService>>(); |
| 212 | l.add(IProxyArpService.class); |
| 213 | return l; |
| 214 | } |
| 215 | |
| 216 | @Override |
| 217 | public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() { |
| 218 | Map<Class<? extends IFloodlightService>, IFloodlightService> m = |
| 219 | new HashMap<Class<? extends IFloodlightService>, IFloodlightService>(); |
| 220 | m.put(IProxyArpService.class, this); |
| 221 | return m; |
| 222 | } |
| 223 | |
| 224 | @Override |
| 225 | public Collection<Class<? extends IFloodlightService>> getModuleDependencies() { |
| 226 | Collection<Class<? extends IFloodlightService>> dependencies = |
| 227 | new ArrayList<Class<? extends IFloodlightService>>(); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 228 | dependencies.add(IRestApiService.class); |
| 229 | dependencies.add(IDatagridService.class); |
| 230 | dependencies.add(IConfigInfoService.class); |
Jonathan Hart | e37e4e2 | 2014-05-13 19:12:02 -0700 | [diff] [blame] | 231 | dependencies.add(ITopologyService.class); |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 232 | dependencies.add(IPacketService.class); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 233 | return dependencies; |
| 234 | } |
| 235 | |
| 236 | @Override |
| 237 | public void init(FloodlightModuleContext context) { |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 238 | this.configService = context.getServiceImpl(IConfigInfoService.class); |
| 239 | this.restApi = context.getServiceImpl(IRestApiService.class); |
TeruU | 7feef8a | 2014-04-03 00:15:49 -0700 | [diff] [blame] | 240 | this.datagrid = context.getServiceImpl(IDatagridService.class); |
Jonathan Hart | e37e4e2 | 2014-05-13 19:12:02 -0700 | [diff] [blame] | 241 | this.topologyService = context.getServiceImpl(ITopologyService.class); |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 242 | this.packetService = context.getServiceImpl(IPacketService.class); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 243 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 244 | arpRequests = Multimaps.synchronizedSetMultimap(HashMultimap |
| 245 | .<InetAddress, ArpRequest>create()); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | @Override |
| 249 | public void startUp(FloodlightModuleContext context) { |
Jonathan Hart | 4aa4753 | 2014-04-23 15:23:41 -0700 | [diff] [blame] | 250 | Map<String, String> configOptions = context.getConfigParams(this); |
| 251 | |
TeruU | 8b2d167 | 2014-04-25 17:02:56 -0700 | [diff] [blame] | 252 | try { |
| 253 | arpCleaningTimerPeriodConfig = Long.parseLong(configOptions.get("cleanupmsec")); |
| 254 | } catch (NumberFormatException e) { |
| 255 | log.debug("ArpCleaningTimerPeriod related config options were not set. Use default."); |
| 256 | } |
| 257 | |
Jonathan Hart | 4aa4753 | 2014-04-23 15:23:41 -0700 | [diff] [blame] | 258 | Long agingmsec = null; |
| 259 | try { |
| 260 | agingmsec = Long.parseLong(configOptions.get("agingmsec")); |
| 261 | } catch (NumberFormatException e) { |
| 262 | log.debug("ArpEntryTimeout related config options were not set. Use default."); |
| 263 | } |
| 264 | |
| 265 | arpCache = new ArpCache(); |
| 266 | if (agingmsec != null) { |
| 267 | arpCache.setArpEntryTimeoutConfig(agingmsec); |
| 268 | } |
| 269 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 270 | this.vlan = configService.getVlan(); |
| 271 | log.info("vlan set to {}", this.vlan); |
| 272 | |
| 273 | restApi.addRestletRoutable(new ArpWebRoutable()); |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 274 | packetService.registerPacketListener(this); |
Jonathan Hart | e37e4e2 | 2014-05-13 19:12:02 -0700 | [diff] [blame] | 275 | topology = topologyService.getTopology(); |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 276 | |
| 277 | // |
| 278 | // Event notification setup: channels and event handlers |
| 279 | // |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 280 | |
| 281 | arpReplyEventChannel = datagrid.addListener(ARP_REPLY_CHANNEL_NAME, |
| 282 | arpReplyEventHandler, |
| 283 | Long.class, |
| 284 | ArpReplyNotification.class); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 285 | |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 286 | arpCacheEventChannel = datagrid.addListener(ARP_CACHE_CHANNEL_NAME, |
| 287 | arpCacheEventHandler, |
| 288 | String.class, |
| 289 | ArpCacheNotification.class); |
| 290 | arpCacheEventHandler.startUp(); |
| 291 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 292 | Timer arpTimer = new Timer("arp-processing"); |
| 293 | arpTimer.scheduleAtFixedRate(new TimerTask() { |
| 294 | @Override |
| 295 | public void run() { |
| 296 | doPeriodicArpProcessing(); |
| 297 | } |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 298 | }, 0, arpTimerPeriodConfig); |
| 299 | |
| 300 | Timer arpCacheTimer = new Timer("arp-clearning"); |
| 301 | arpCacheTimer.scheduleAtFixedRate(new TimerTask() { |
| 302 | @Override |
| 303 | public void run() { |
| 304 | doPeriodicArpCleaning(); |
| 305 | } |
| 306 | }, 0, arpCleaningTimerPeriodConfig); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 307 | } |
| 308 | |
| 309 | /* |
| 310 | * Function that runs periodically to manage the asynchronous request mechanism. |
| 311 | * It basically cleans up old ARP requests if we don't get a response for them. |
| 312 | * The caller can designate that a request should be retried indefinitely, and |
| 313 | * this task will handle that as well. |
| 314 | */ |
| 315 | private void doPeriodicArpProcessing() { |
| 316 | SetMultimap<InetAddress, ArpRequest> retryList = HashMultimap |
| 317 | .<InetAddress, ArpRequest>create(); |
| 318 | |
Jonathan Hart | 5531658 | 2014-05-09 10:02:58 -0700 | [diff] [blame^] | 319 | // We must synchronize externally on the Multimap while using an |
| 320 | // iterator, even though it's a synchronizedMultimap |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 321 | synchronized (arpRequests) { |
| 322 | Iterator<Map.Entry<InetAddress, ArpRequest>> it = arpRequests |
| 323 | .entries().iterator(); |
| 324 | |
| 325 | while (it.hasNext()) { |
| 326 | Map.Entry<InetAddress, ArpRequest> entry = it.next(); |
| 327 | ArpRequest request = entry.getValue(); |
| 328 | if (request.isExpired()) { |
| 329 | log.debug("Cleaning expired ARP request for {}", entry |
| 330 | .getKey().getHostAddress()); |
| 331 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 332 | it.remove(); |
| 333 | |
| 334 | if (request.shouldRetry()) { |
| 335 | retryList.put(entry.getKey(), request); |
| 336 | } |
| 337 | } |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | for (Map.Entry<InetAddress, Collection<ArpRequest>> entry : retryList |
| 342 | .asMap().entrySet()) { |
| 343 | |
| 344 | InetAddress address = entry.getKey(); |
| 345 | |
| 346 | log.debug("Resending ARP request for {}", address.getHostAddress()); |
| 347 | |
| 348 | // Only ARP requests sent by the controller will have the retry flag |
| 349 | // set, so for now we can just send a new ARP request for that |
| 350 | // address. |
| 351 | sendArpRequestForAddress(address); |
| 352 | |
| 353 | for (ArpRequest request : entry.getValue()) { |
| 354 | arpRequests.put(address, new ArpRequest(request)); |
| 355 | } |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | @Override |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 360 | public void receive(Switch sw, Port inPort, Ethernet eth) { |
TeruU | 8b2d167 | 2014-04-25 17:02:56 -0700 | [diff] [blame] | 361 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 362 | if (eth.getEtherType() == Ethernet.TYPE_ARP) { |
| 363 | ARP arp = (ARP) eth.getPayload(); |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 364 | learnArp(arp); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 365 | if (arp.getOpCode() == ARP.OP_REQUEST) { |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 366 | handleArpRequest(sw.getDpid(), inPort.getNumber().shortValue(), |
| 367 | arp, eth); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 368 | } else if (arp.getOpCode() == ARP.OP_REPLY) { |
| 369 | // For replies we simply send a notification via Hazelcast |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 370 | sendArpReplyNotification(eth); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 371 | } |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 372 | } |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 373 | } |
pingping-lin | b8757bf | 2013-12-13 01:48:58 +0800 | [diff] [blame] | 374 | |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 375 | private void learnArp(ARP arp) { |
| 376 | ArpCacheNotification arpCacheNotification = null; |
| 377 | |
| 378 | arpCacheNotification = new ArpCacheNotification(arp.getSenderProtocolAddress(), arp.getSenderHardwareAddress()); |
| 379 | |
| 380 | try { |
| 381 | arpCacheEventChannel.addEntry(InetAddress.getByAddress(arp.getSenderProtocolAddress()).toString(), arpCacheNotification); |
| 382 | } catch (UnknownHostException e) { |
| 383 | log.error("Exception : ", e); |
| 384 | } |
| 385 | } |
| 386 | |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 387 | private void handleArpRequest(long dpid, short inPort, ARP arp, Ethernet eth) { |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 388 | if (log.isTraceEnabled()) { |
| 389 | log.trace("ARP request received for {}", |
| 390 | inetAddressToString(arp.getTargetProtocolAddress())); |
| 391 | } |
pingping-lin | b8757bf | 2013-12-13 01:48:58 +0800 | [diff] [blame] | 392 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 393 | InetAddress target; |
| 394 | try { |
| 395 | target = InetAddress.getByAddress(arp.getTargetProtocolAddress()); |
| 396 | } catch (UnknownHostException e) { |
| 397 | log.debug("Invalid address in ARP request", e); |
| 398 | return; |
| 399 | } |
Pavlin Radoslavov | 4cf8ee5 | 2014-03-26 18:19:58 -0700 | [diff] [blame] | 400 | |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 401 | if (configService.fromExternalNetwork(dpid, inPort)) { |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 402 | // If the request came from outside our network, we only care if |
| 403 | // it was a request for one of our interfaces. |
| 404 | if (configService.isInterfaceAddress(target)) { |
| 405 | log.trace( |
| 406 | "ARP request for our interface. Sending reply {} => {}", |
| 407 | target.getHostAddress(), |
| 408 | configService.getRouterMacAddress()); |
pingping-lin | b8757bf | 2013-12-13 01:48:58 +0800 | [diff] [blame] | 409 | |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 410 | sendArpReply(arp, dpid, inPort, |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 411 | configService.getRouterMacAddress()); |
| 412 | } |
pingping-lin | b8757bf | 2013-12-13 01:48:58 +0800 | [diff] [blame] | 413 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 414 | return; |
| 415 | } |
pingping-lin | b8757bf | 2013-12-13 01:48:58 +0800 | [diff] [blame] | 416 | |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 417 | //MACAddress mac = arpCache.lookup(target); |
pingping-lin | b8757bf | 2013-12-13 01:48:58 +0800 | [diff] [blame] | 418 | |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 419 | arpRequests.put(target, new ArpRequest( |
| 420 | new HostArpRequester(arp, dpid, inPort), false)); |
pingping-lin | b8757bf | 2013-12-13 01:48:58 +0800 | [diff] [blame] | 421 | |
Jonathan Hart | e37e4e2 | 2014-05-13 19:12:02 -0700 | [diff] [blame] | 422 | topology.acquireReadLock(); |
| 423 | Device targetDevice = topology.getDeviceByMac( |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 424 | MACAddress.valueOf(arp.getTargetHardwareAddress())); |
Jonathan Hart | e37e4e2 | 2014-05-13 19:12:02 -0700 | [diff] [blame] | 425 | topology.releaseReadLock(); |
pingping-lin | b8757bf | 2013-12-13 01:48:58 +0800 | [diff] [blame] | 426 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 427 | if (targetDevice == null) { |
| 428 | if (log.isTraceEnabled()) { |
| 429 | log.trace("No device info found for {} - broadcasting", |
| 430 | target.getHostAddress()); |
| 431 | } |
Jonathan Hart | 18ad950 | 2013-12-15 18:28:00 -0800 | [diff] [blame] | 432 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 433 | // We don't know the device so broadcast the request out |
Jonathan Hart | e3702f2 | 2014-04-29 02:56:56 -0700 | [diff] [blame] | 434 | packetService.broadcastPacketOutEdge(eth, |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 435 | new SwitchPort(dpid, inPort)); |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 436 | } else { |
| 437 | // Even if the device exists in our database, we do not reply to |
| 438 | // the request directly, but check whether the device is still valid |
| 439 | MACAddress macAddress = MACAddress.valueOf(arp.getTargetHardwareAddress()); |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 440 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 441 | if (log.isTraceEnabled()) { |
| 442 | log.trace("The target Device Record in DB is: {} => {} from ARP request host at {}/{}", |
| 443 | new Object[]{ |
| 444 | inetAddressToString(arp.getTargetProtocolAddress()), |
| 445 | macAddress, |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 446 | HexString.toHexString(dpid), inPort}); |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 447 | } |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 448 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 449 | // sendArpReply(arp, sw.getId(), pi.getInPort(), macAddress); |
Jonathan Hart | 7804bea | 2014-01-07 10:50:52 -0800 | [diff] [blame] | 450 | |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 451 | Iterable<net.onrc.onos.core.topology.Port> outPorts = targetDevice.getAttachmentPoints(); |
| 452 | |
| 453 | if (!outPorts.iterator().hasNext()) { |
| 454 | if (log.isTraceEnabled()) { |
| 455 | log.trace("Device {} exists but is not connected to any ports" + |
| 456 | " - broadcasting", macAddress); |
| 457 | } |
| 458 | |
Jonathan Hart | e3702f2 | 2014-04-29 02:56:56 -0700 | [diff] [blame] | 459 | packetService.broadcastPacketOutEdge(eth, |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 460 | new SwitchPort(dpid, inPort)); |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 461 | } else { |
| 462 | for (net.onrc.onos.core.topology.Port portObject : outPorts) { |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 463 | |
| 464 | if (portObject.getOutgoingLink() != null || portObject.getIncomingLink() != null) { |
| 465 | continue; |
| 466 | } |
| 467 | |
| 468 | short outPort = portObject.getNumber().shortValue(); |
| 469 | Switch outSwitchObject = portObject.getSwitch(); |
| 470 | long outSwitch = outSwitchObject.getDpid(); |
| 471 | |
| 472 | if (log.isTraceEnabled()) { |
| 473 | log.trace("Probing device {} on port {}/{}", |
| 474 | new Object[]{macAddress, |
| 475 | HexString.toHexString(outSwitch), outPort}); |
| 476 | } |
| 477 | |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 478 | packetService.sendPacket( |
Jonathan Hart | e3702f2 | 2014-04-29 02:56:56 -0700 | [diff] [blame] | 479 | eth, new SwitchPort(outSwitch, outPort)); |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 480 | } |
| 481 | } |
| 482 | } |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 483 | } |
pingping-lin | b8757bf | 2013-12-13 01:48:58 +0800 | [diff] [blame] | 484 | |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 485 | // TODO this method has not been tested after recent implementation changes. |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 486 | private void sendArpRequestForAddress(InetAddress ipAddress) { |
| 487 | // TODO what should the sender IP address and MAC address be if no |
| 488 | // IP addresses are configured? Will there ever be a need to send |
| 489 | // ARP requests from the controller in that case? |
| 490 | // All-zero MAC address doesn't seem to work - hosts don't respond to it |
| 491 | |
| 492 | byte[] zeroIpv4 = {0x0, 0x0, 0x0, 0x0}; |
| 493 | byte[] zeroMac = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0}; |
| 494 | byte[] genericNonZeroMac = {0x0, 0x0, 0x0, 0x0, 0x0, 0x01}; |
| 495 | byte[] broadcastMac = {(byte) 0xff, (byte) 0xff, (byte) 0xff, |
| 496 | (byte) 0xff, (byte) 0xff, (byte) 0xff}; |
| 497 | |
| 498 | ARP arpRequest = new ARP(); |
| 499 | |
| 500 | arpRequest |
| 501 | .setHardwareType(ARP.HW_TYPE_ETHERNET) |
| 502 | .setProtocolType(ARP.PROTO_TYPE_IP) |
| 503 | .setHardwareAddressLength( |
| 504 | (byte) Ethernet.DATALAYER_ADDRESS_LENGTH) |
| 505 | .setProtocolAddressLength((byte) IPv4.ADDRESS_LENGTH) |
| 506 | .setOpCode(ARP.OP_REQUEST).setTargetHardwareAddress(zeroMac) |
| 507 | .setTargetProtocolAddress(ipAddress.getAddress()); |
| 508 | |
| 509 | MACAddress routerMacAddress = configService.getRouterMacAddress(); |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 510 | // As for now, it's unclear what the MAC address should be |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 511 | byte[] senderMacAddress = genericNonZeroMac; |
| 512 | if (routerMacAddress != null) { |
| 513 | senderMacAddress = routerMacAddress.toBytes(); |
| 514 | } |
| 515 | arpRequest.setSenderHardwareAddress(senderMacAddress); |
| 516 | |
| 517 | byte[] senderIPAddress = zeroIpv4; |
| 518 | Interface intf = configService.getOutgoingInterface(ipAddress); |
Jonathan Hart | 8ed69c5 | 2014-04-09 13:29:16 -0700 | [diff] [blame] | 519 | if (intf == null) { |
| 520 | // TODO handle the case where the controller needs to send an ARP |
| 521 | // request but there's not IP configuration. In this case the |
| 522 | // request should be broadcast out all edge ports in the network. |
| 523 | log.warn("Sending ARP requests with default configuration " |
| 524 | + "not supported"); |
| 525 | return; |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 526 | } |
| 527 | |
Jonathan Hart | 8ed69c5 | 2014-04-09 13:29:16 -0700 | [diff] [blame] | 528 | senderIPAddress = intf.getIpAddress().getAddress(); |
| 529 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 530 | arpRequest.setSenderProtocolAddress(senderIPAddress); |
| 531 | |
| 532 | Ethernet eth = new Ethernet(); |
| 533 | eth.setSourceMACAddress(senderMacAddress) |
| 534 | .setDestinationMACAddress(broadcastMac) |
| 535 | .setEtherType(Ethernet.TYPE_ARP).setPayload(arpRequest); |
| 536 | |
| 537 | if (vlan != NO_VLAN) { |
| 538 | eth.setVlanID(vlan).setPriorityCode((byte) 0); |
| 539 | } |
| 540 | |
| 541 | // sendArpRequestToSwitches(ipAddress, eth.serialize()); |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 542 | |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 543 | packetService.sendPacket( |
Jonathan Hart | e3702f2 | 2014-04-29 02:56:56 -0700 | [diff] [blame] | 544 | eth, new SwitchPort(intf.getDpid(), intf.getPort())); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 545 | } |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 546 | |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 547 | //Please leave it for now because this code is needed for SDN-IP. It will be removed soon. |
Pavlin Radoslavov | f1fdc7a | 2014-04-10 16:05:28 -0700 | [diff] [blame] | 548 | /* |
TeruU | 7feef8a | 2014-04-03 00:15:49 -0700 | [diff] [blame] | 549 | private void sendArpRequestToSwitches(InetAddress dstAddress, byte[] arpRequest) { |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 550 | sendArpRequestToSwitches(dstAddress, arpRequest, |
| 551 | 0, OFPort.OFPP_NONE.getValue()); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 552 | } |
| 553 | |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 554 | private void sendArpRequestToSwitches(InetAddress dstAddress, byte[] arpRequest, |
| 555 | long inSwitch, short inPort) { |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 556 | |
| 557 | if (configService.hasLayer3Configuration()) { |
| 558 | Interface intf = configService.getOutgoingInterface(dstAddress); |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 559 | if (intf != null) { |
| 560 | sendArpRequestOutPort(arpRequest, intf.getDpid(), intf.getPort()); |
| 561 | } |
| 562 | else { |
| 563 | //TODO here it should be broadcast out all non-interface edge ports. |
| 564 | //I think we can assume that if it's not a request for an external |
| 565 | //network, it's an ARP for a host in our own network. So we want to |
| 566 | //send it out all edge ports that don't have an interface configured |
| 567 | //to ensure it reaches all hosts in our network. |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 568 | log.debug("No interface found to send ARP request for {}", |
| 569 | dstAddress.getHostAddress()); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 570 | } |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 571 | } |
| 572 | else { |
| 573 | broadcastArpRequestOutEdge(arpRequest, inSwitch, inPort); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 574 | } |
| 575 | } |
Pavlin Radoslavov | f1fdc7a | 2014-04-10 16:05:28 -0700 | [diff] [blame] | 576 | */ |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 577 | |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 578 | private void sendArpReplyNotification(Ethernet eth) { |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 579 | ARP arp = (ARP) eth.getPayload(); |
| 580 | |
| 581 | if (log.isTraceEnabled()) { |
| 582 | log.trace("Sending ARP reply for {} to other ONOS instances", |
| 583 | inetAddressToString(arp.getSenderProtocolAddress())); |
| 584 | } |
| 585 | |
| 586 | InetAddress targetAddress; |
| 587 | |
| 588 | try { |
| 589 | targetAddress = InetAddress.getByAddress(arp |
| 590 | .getSenderProtocolAddress()); |
| 591 | } catch (UnknownHostException e) { |
| 592 | log.error("Unknown host", e); |
| 593 | return; |
| 594 | } |
| 595 | |
| 596 | MACAddress mac = new MACAddress(arp.getSenderHardwareAddress()); |
| 597 | |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 598 | ArpReplyNotification value = |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 599 | new ArpReplyNotification(ByteBuffer.wrap(targetAddress.getAddress()).getInt(), mac); |
| 600 | log.debug("ArpReplyNotification ip {}, mac{}", ByteBuffer.wrap(targetAddress.getAddress()).getInt(), mac); |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 601 | arpReplyEventChannel.addTransientEntry(mac.toLong(), value); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 602 | } |
| 603 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 604 | private void sendArpReply(ARP arpRequest, long dpid, short port, |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 605 | MACAddress targetMac) { |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 606 | if (log.isTraceEnabled()) { |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 607 | log.trace("Sending reply {} => {} to {}", |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 608 | new Object[]{ |
Jonathan Hart | 51dc5e1 | 2014-04-22 11:03:59 -0700 | [diff] [blame] | 609 | inetAddressToString(arpRequest.getTargetProtocolAddress()), |
| 610 | targetMac, inetAddressToString(arpRequest |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 611 | .getSenderProtocolAddress())}); |
| 612 | } |
| 613 | |
| 614 | ARP arpReply = new ARP(); |
| 615 | arpReply.setHardwareType(ARP.HW_TYPE_ETHERNET) |
| 616 | .setProtocolType(ARP.PROTO_TYPE_IP) |
| 617 | .setHardwareAddressLength( |
| 618 | (byte) Ethernet.DATALAYER_ADDRESS_LENGTH) |
| 619 | .setProtocolAddressLength((byte) IPv4.ADDRESS_LENGTH) |
| 620 | .setOpCode(ARP.OP_REPLY) |
| 621 | .setSenderHardwareAddress(targetMac.toBytes()) |
| 622 | .setSenderProtocolAddress(arpRequest.getTargetProtocolAddress()) |
| 623 | .setTargetHardwareAddress(arpRequest.getSenderHardwareAddress()) |
| 624 | .setTargetProtocolAddress(arpRequest.getSenderProtocolAddress()); |
| 625 | |
| 626 | Ethernet eth = new Ethernet(); |
| 627 | eth.setDestinationMACAddress(arpRequest.getSenderHardwareAddress()) |
| 628 | .setSourceMACAddress(targetMac.toBytes()) |
| 629 | .setEtherType(Ethernet.TYPE_ARP).setPayload(arpReply); |
| 630 | |
| 631 | if (vlan != NO_VLAN) { |
| 632 | eth.setVlanID(vlan).setPriorityCode((byte) 0); |
| 633 | } |
| 634 | |
Jonathan Hart | e3702f2 | 2014-04-29 02:56:56 -0700 | [diff] [blame] | 635 | packetService.sendPacket(eth, new SwitchPort(dpid, port)); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 636 | } |
| 637 | |
| 638 | private String inetAddressToString(byte[] bytes) { |
| 639 | try { |
| 640 | return InetAddress.getByAddress(bytes).getHostAddress(); |
| 641 | } catch (UnknownHostException e) { |
| 642 | log.debug("Invalid IP address", e); |
| 643 | return ""; |
| 644 | } |
| 645 | } |
| 646 | |
| 647 | /* |
| 648 | * IProxyArpService methods |
| 649 | */ |
| 650 | |
| 651 | @Override |
| 652 | public MACAddress getMacAddress(InetAddress ipAddress) { |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 653 | return arpCache.lookup(ipAddress); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 654 | } |
| 655 | |
| 656 | @Override |
| 657 | public void sendArpRequest(InetAddress ipAddress, IArpRequester requester, |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 658 | boolean retry) { |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 659 | arpRequests.put(ipAddress, new ArpRequest(requester, retry)); |
| 660 | |
| 661 | // Sanity check to make sure we don't send a request for our own address |
| 662 | if (!configService.isInterfaceAddress(ipAddress)) { |
| 663 | sendArpRequestForAddress(ipAddress); |
| 664 | } |
| 665 | } |
| 666 | |
| 667 | @Override |
| 668 | public List<String> getMappings() { |
TeruU | 8b2d167 | 2014-04-25 17:02:56 -0700 | [diff] [blame] | 669 | return arpCache.getMappings(); |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 670 | } |
| 671 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 672 | private void sendArpReplyToWaitingRequesters(InetAddress address, |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 673 | MACAddress mac) { |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 674 | log.debug("Sending ARP reply for {} to requesters", |
| 675 | address.getHostAddress()); |
| 676 | |
| 677 | // See if anyone's waiting for this ARP reply |
| 678 | Set<ArpRequest> requests = arpRequests.get(address); |
| 679 | |
| 680 | // Synchronize on the Multimap while using an iterator for one of the |
| 681 | // sets |
| 682 | List<ArpRequest> requestsToSend = new ArrayList<ArpRequest>( |
| 683 | requests.size()); |
| 684 | synchronized (arpRequests) { |
| 685 | Iterator<ArpRequest> it = requests.iterator(); |
| 686 | while (it.hasNext()) { |
| 687 | ArpRequest request = it.next(); |
| 688 | it.remove(); |
| 689 | requestsToSend.add(request); |
| 690 | } |
| 691 | } |
| 692 | |
Jonathan Hart | 7c9a2fb | 2014-03-27 09:51:41 -0700 | [diff] [blame] | 693 | // Don't hold an ARP lock while dispatching requests |
| 694 | for (ArpRequest request : requestsToSend) { |
| 695 | request.dispatchReply(address, mac); |
| 696 | } |
| 697 | } |
TeruU | 3c049c4 | 2014-04-15 10:13:25 -0700 | [diff] [blame] | 698 | |
| 699 | private void doPeriodicArpCleaning() { |
| 700 | List<InetAddress> expiredipslist = arpCache.getExpiredArpCacheIps(); |
| 701 | for (InetAddress expireIp : expiredipslist) { |
| 702 | log.debug("call arpCacheEventChannel.removeEntry, ip {}", expireIp); |
| 703 | arpCacheEventChannel.removeEntry(expireIp.toString()); |
| 704 | } |
| 705 | } |
TeruU | 8b2d167 | 2014-04-25 17:02:56 -0700 | [diff] [blame] | 706 | |
| 707 | public long getArpEntryTimeout() { |
| 708 | return arpCache.getArpEntryTimeout(); |
| 709 | } |
| 710 | |
| 711 | public long getArpCleaningTimerPeriod() { |
| 712 | return arpCleaningTimerPeriodConfig; |
| 713 | } |
Ray Milkey | 269ffb9 | 2014-04-03 14:43:30 -0700 | [diff] [blame] | 714 | } |