Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 1 | package net.onrc.onos.ofcontroller.proxyarp; |
| 2 | |
| 3 | import java.io.IOException; |
| 4 | import java.net.InetAddress; |
| 5 | import java.net.UnknownHostException; |
| 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 | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 9 | import java.util.HashSet; |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 10 | import java.util.Iterator; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 11 | import java.util.List; |
| 12 | import java.util.Map; |
| 13 | import java.util.Set; |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 14 | import java.util.Timer; |
| 15 | import java.util.TimerTask; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 16 | |
| 17 | import net.floodlightcontroller.core.FloodlightContext; |
| 18 | import net.floodlightcontroller.core.IFloodlightProviderService; |
| 19 | import net.floodlightcontroller.core.IOFMessageListener; |
| 20 | import net.floodlightcontroller.core.IOFSwitch; |
Jonathan Hart | e93aed4 | 2013-12-05 18:39:50 -0800 | [diff] [blame] | 21 | import net.floodlightcontroller.core.module.FloodlightModuleContext; |
| 22 | import net.floodlightcontroller.core.module.IFloodlightModule; |
| 23 | import net.floodlightcontroller.core.module.IFloodlightService; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 24 | import net.floodlightcontroller.packet.ARP; |
| 25 | import net.floodlightcontroller.packet.Ethernet; |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 26 | import net.floodlightcontroller.packet.IPv4; |
Jonathan Hart | 5afde49 | 2013-10-01 12:30:53 +1300 | [diff] [blame] | 27 | import net.floodlightcontroller.restserver.IRestApiService; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 28 | import net.floodlightcontroller.topology.ITopologyService; |
Jonathan Hart | 8ec133c | 2013-06-26 15:25:18 +1200 | [diff] [blame] | 29 | import net.floodlightcontroller.util.MACAddress; |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 30 | import net.onrc.onos.datagrid.IDatagridService; |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 31 | import net.onrc.onos.ofcontroller.bgproute.Interface; |
Jonathan Hart | d6ed62b | 2013-11-01 13:18:25 -0700 | [diff] [blame] | 32 | import net.onrc.onos.ofcontroller.core.IDeviceStorage; |
| 33 | import net.onrc.onos.ofcontroller.core.INetMapTopologyObjects.IDeviceObject; |
Jonathan Hart | 9a21e0d | 2013-11-14 15:09:09 -0800 | [diff] [blame] | 34 | import net.onrc.onos.ofcontroller.core.INetMapTopologyObjects.IPortObject; |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 35 | import net.onrc.onos.ofcontroller.core.INetMapTopologyService.ITopoSwitchService; |
Jonathan Hart | ebba1e1 | 2013-10-29 11:37:02 -0700 | [diff] [blame] | 36 | import net.onrc.onos.ofcontroller.core.config.IConfigInfoService; |
Jonathan Hart | d6ed62b | 2013-11-01 13:18:25 -0700 | [diff] [blame] | 37 | import net.onrc.onos.ofcontroller.core.internal.DeviceStorageImpl; |
Jonathan Hart | 9a21e0d | 2013-11-14 15:09:09 -0800 | [diff] [blame] | 38 | import net.onrc.onos.ofcontroller.core.internal.TopoSwitchServiceImpl; |
Jonathan Hart | ba9ced9 | 2013-11-24 16:52:13 -0800 | [diff] [blame] | 39 | import net.onrc.onos.ofcontroller.util.Dpid; |
| 40 | import net.onrc.onos.ofcontroller.util.Port; |
| 41 | import net.onrc.onos.ofcontroller.util.SwitchPort; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 42 | |
| 43 | import org.openflow.protocol.OFMessage; |
| 44 | import org.openflow.protocol.OFPacketIn; |
| 45 | import org.openflow.protocol.OFPacketOut; |
| 46 | import org.openflow.protocol.OFPort; |
| 47 | import org.openflow.protocol.OFType; |
| 48 | import org.openflow.protocol.action.OFAction; |
| 49 | import org.openflow.protocol.action.OFActionOutput; |
Jonathan Hart | 8ec133c | 2013-06-26 15:25:18 +1200 | [diff] [blame] | 50 | import org.openflow.util.HexString; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 51 | import org.slf4j.Logger; |
| 52 | import org.slf4j.LoggerFactory; |
| 53 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 54 | import com.google.common.collect.HashMultimap; |
| 55 | import com.google.common.collect.Multimaps; |
| 56 | import com.google.common.collect.SetMultimap; |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 57 | import com.google.common.net.InetAddresses; |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 58 | |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 59 | public class ProxyArpManager implements IProxyArpService, IOFMessageListener, |
Jonathan Hart | e93aed4 | 2013-12-05 18:39:50 -0800 | [diff] [blame] | 60 | IArpEventHandler, IFloodlightModule { |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 61 | private final static Logger log = LoggerFactory.getLogger(ProxyArpManager.class); |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 62 | |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 63 | private final long ARP_TIMER_PERIOD = 60000; //ms (== 1 min) |
Jonathan Hart | da4d0e1 | 2013-09-30 21:00:20 +1300 | [diff] [blame] | 64 | |
| 65 | private static final int ARP_REQUEST_TIMEOUT = 2000; //ms |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 66 | |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 67 | private IFloodlightProviderService floodlightProvider; |
| 68 | private ITopologyService topology; |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 69 | private IDatagridService datagrid; |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 70 | private IConfigInfoService configService; |
| 71 | private IRestApiService restApi; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 72 | |
Jonathan Hart | d6ed62b | 2013-11-01 13:18:25 -0700 | [diff] [blame] | 73 | private IDeviceStorage deviceStorage; |
Jonathan Hart | 9a21e0d | 2013-11-14 15:09:09 -0800 | [diff] [blame] | 74 | private volatile ITopoSwitchService topoSwitchService; |
Jonathan Hart | d6ed62b | 2013-11-01 13:18:25 -0700 | [diff] [blame] | 75 | |
Jonathan Hart | 1cf9de0 | 2013-10-21 17:42:29 -0700 | [diff] [blame] | 76 | private short vlan; |
| 77 | private static final short NO_VLAN = 0; |
| 78 | |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 79 | private ArpCache arpCache; |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 80 | |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 81 | private SetMultimap<InetAddress, ArpRequest> arpRequests; |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 82 | |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 83 | private static class ArpRequest { |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 84 | private final IArpRequester requester; |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 85 | private final boolean retry; |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 86 | private long requestTime; |
| 87 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 88 | public ArpRequest(IArpRequester requester, boolean retry){ |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 89 | this.requester = requester; |
| 90 | this.retry = retry; |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 91 | this.requestTime = System.currentTimeMillis(); |
| 92 | } |
| 93 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 94 | public ArpRequest(ArpRequest old) { |
| 95 | this.requester = old.requester; |
| 96 | this.retry = old.retry; |
| 97 | this.requestTime = System.currentTimeMillis(); |
| 98 | } |
| 99 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 100 | public boolean isExpired() { |
Jonathan Hart | da4d0e1 | 2013-09-30 21:00:20 +1300 | [diff] [blame] | 101 | return (System.currentTimeMillis() - requestTime) > ARP_REQUEST_TIMEOUT; |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 102 | } |
| 103 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 104 | public boolean shouldRetry() { |
| 105 | return retry; |
| 106 | } |
| 107 | |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 108 | public void dispatchReply(InetAddress ipAddress, MACAddress replyMacAddress) { |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 109 | requester.arpResponse(ipAddress, replyMacAddress); |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 110 | } |
| 111 | } |
| 112 | |
Jonathan Hart | da4d0e1 | 2013-09-30 21:00:20 +1300 | [diff] [blame] | 113 | private class HostArpRequester implements IArpRequester { |
| 114 | private final ARP arpRequest; |
| 115 | private final long dpid; |
| 116 | private final short port; |
| 117 | |
| 118 | public HostArpRequester(ARP arpRequest, long dpid, short port) { |
| 119 | this.arpRequest = arpRequest; |
| 120 | this.dpid = dpid; |
| 121 | this.port = port; |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | public void arpResponse(InetAddress ipAddress, MACAddress macAddress) { |
| 126 | ProxyArpManager.this.sendArpReply(arpRequest, dpid, port, macAddress); |
| 127 | } |
| 128 | } |
| 129 | |
Jonathan Hart | e93aed4 | 2013-12-05 18:39:50 -0800 | [diff] [blame] | 130 | @Override |
| 131 | public Collection<Class<? extends IFloodlightService>> getModuleServices() { |
| 132 | Collection<Class<? extends IFloodlightService>> l |
| 133 | = new ArrayList<Class<? extends IFloodlightService>>(); |
| 134 | l.add(IProxyArpService.class); |
| 135 | return l; |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 136 | } |
Jonathan Hart | e93aed4 | 2013-12-05 18:39:50 -0800 | [diff] [blame] | 137 | |
| 138 | @Override |
| 139 | public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() { |
| 140 | Map<Class<? extends IFloodlightService>, IFloodlightService> m |
| 141 | = new HashMap<Class<? extends IFloodlightService>, IFloodlightService>(); |
| 142 | m.put(IProxyArpService.class, this); |
| 143 | return m; |
| 144 | } |
| 145 | |
| 146 | @Override |
| 147 | public Collection<Class<? extends IFloodlightService>> getModuleDependencies() { |
| 148 | Collection<Class<? extends IFloodlightService>> dependencies |
| 149 | = new ArrayList<Class<? extends IFloodlightService>>(); |
| 150 | dependencies.add(IFloodlightProviderService.class); |
| 151 | dependencies.add(ITopologyService.class); |
| 152 | dependencies.add(IRestApiService.class); |
| 153 | dependencies.add(IDatagridService.class); |
| 154 | dependencies.add(IConfigInfoService.class); |
| 155 | return dependencies; |
| 156 | } |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 157 | |
Jonathan Hart | e93aed4 | 2013-12-05 18:39:50 -0800 | [diff] [blame] | 158 | @Override |
| 159 | public void init(FloodlightModuleContext context){ |
| 160 | this.floodlightProvider = |
| 161 | context.getServiceImpl(IFloodlightProviderService.class); |
| 162 | this.topology = context.getServiceImpl(ITopologyService.class); |
| 163 | this.datagrid = context.getServiceImpl(IDatagridService.class); |
| 164 | this.configService = context.getServiceImpl(IConfigInfoService.class); |
| 165 | this.restApi = context.getServiceImpl(IRestApiService.class); |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 166 | |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 167 | arpCache = new ArpCache(); |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 168 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 169 | arpRequests = Multimaps.synchronizedSetMultimap( |
| 170 | HashMultimap.<InetAddress, ArpRequest>create()); |
Jonathan Hart | 9a21e0d | 2013-11-14 15:09:09 -0800 | [diff] [blame] | 171 | |
| 172 | topoSwitchService = new TopoSwitchServiceImpl(); |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 173 | } |
| 174 | |
Jonathan Hart | e93aed4 | 2013-12-05 18:39:50 -0800 | [diff] [blame] | 175 | @Override |
| 176 | public void startUp(FloodlightModuleContext context) { |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 177 | this.vlan = configService.getVlan(); |
Jonathan Hart | 1cf9de0 | 2013-10-21 17:42:29 -0700 | [diff] [blame] | 178 | log.info("vlan set to {}", this.vlan); |
| 179 | |
Jonathan Hart | 5afde49 | 2013-10-01 12:30:53 +1300 | [diff] [blame] | 180 | restApi.addRestletRoutable(new ArpWebRoutable()); |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 181 | floodlightProvider.addOFMessageListener(OFType.PACKET_IN, this); |
Jonathan Hart | 5afde49 | 2013-10-01 12:30:53 +1300 | [diff] [blame] | 182 | |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 183 | datagrid.registerArpEventHandler(this); |
| 184 | |
Jonathan Hart | d6ed62b | 2013-11-01 13:18:25 -0700 | [diff] [blame] | 185 | deviceStorage = new DeviceStorageImpl(); |
| 186 | deviceStorage.init(""); |
| 187 | |
Jonathan Hart | 4aa2b4e | 2013-09-24 14:50:23 +1200 | [diff] [blame] | 188 | Timer arpTimer = new Timer("arp-processing"); |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 189 | arpTimer.scheduleAtFixedRate(new TimerTask() { |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 190 | @Override |
| 191 | public void run() { |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 192 | doPeriodicArpProcessing(); |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 193 | } |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 194 | }, 0, ARP_TIMER_PERIOD); |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 195 | } |
| 196 | |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 197 | /* |
| 198 | * Function that runs periodically to manage the asynchronous request mechanism. |
| 199 | * It basically cleans up old ARP requests if we don't get a response for them. |
| 200 | * The caller can designate that a request should be retried indefinitely, and |
| 201 | * this task will handle that as well. |
| 202 | */ |
| 203 | private void doPeriodicArpProcessing() { |
| 204 | SetMultimap<InetAddress, ArpRequest> retryList |
| 205 | = HashMultimap.<InetAddress, ArpRequest>create(); |
| 206 | |
| 207 | //Have to synchronize externally on the Multimap while using an iterator, |
| 208 | //even though it's a synchronizedMultimap |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 209 | synchronized (arpRequests) { |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 210 | log.debug("Current have {} outstanding requests", |
| 211 | arpRequests.size()); |
| 212 | |
| 213 | Iterator<Map.Entry<InetAddress, ArpRequest>> it |
| 214 | = arpRequests.entries().iterator(); |
| 215 | |
| 216 | while (it.hasNext()) { |
| 217 | Map.Entry<InetAddress, ArpRequest> entry |
| 218 | = it.next(); |
| 219 | ArpRequest request = entry.getValue(); |
| 220 | if (request.isExpired()) { |
| 221 | log.debug("Cleaning expired ARP request for {}", |
| 222 | entry.getKey().getHostAddress()); |
| 223 | |
| 224 | it.remove(); |
| 225 | |
| 226 | if (request.shouldRetry()) { |
| 227 | retryList.put(entry.getKey(), request); |
| 228 | } |
| 229 | } |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 230 | } |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 231 | } |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 232 | |
| 233 | for (Map.Entry<InetAddress, Collection<ArpRequest>> entry |
| 234 | : retryList.asMap().entrySet()) { |
| 235 | |
| 236 | InetAddress address = entry.getKey(); |
| 237 | |
| 238 | log.debug("Resending ARP request for {}", address.getHostAddress()); |
| 239 | |
| 240 | sendArpRequestForAddress(address); |
| 241 | |
| 242 | for (ArpRequest request : entry.getValue()) { |
| 243 | arpRequests.put(address, new ArpRequest(request)); |
| 244 | } |
| 245 | } |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 246 | } |
| 247 | |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 248 | @Override |
| 249 | public String getName() { |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 250 | return "proxyarpmanager"; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | @Override |
| 254 | public boolean isCallbackOrderingPrereq(OFType type, String name) { |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 255 | if (type == OFType.PACKET_IN) { |
| 256 | return "devicemanager".equals(name); |
| 257 | } |
| 258 | else { |
| 259 | return false; |
| 260 | } |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | @Override |
| 264 | public boolean isCallbackOrderingPostreq(OFType type, String name) { |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 265 | return false; |
| 266 | } |
| 267 | |
| 268 | @Override |
| 269 | public Command receive( |
| 270 | IOFSwitch sw, OFMessage msg, FloodlightContext cntx) { |
| 271 | |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 272 | OFPacketIn pi = (OFPacketIn) msg; |
| 273 | |
| 274 | Ethernet eth = IFloodlightProviderService.bcStore.get(cntx, |
| 275 | IFloodlightProviderService.CONTEXT_PI_PAYLOAD); |
| 276 | |
| 277 | if (eth.getEtherType() == Ethernet.TYPE_ARP){ |
Jonathan Hart | 5ea7cc0 | 2013-11-12 11:56:23 -0800 | [diff] [blame] | 278 | ARP arp = (ARP) eth.getPayload(); |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 279 | if (arp.getOpCode() == ARP.OP_REQUEST) { |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 280 | //TODO check what the DeviceManager does about propagating |
| 281 | //or swallowing ARPs. We want to go after DeviceManager in the |
| 282 | //chain but we really need it to CONTINUE ARP packets so we can |
| 283 | //get them. |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 284 | handleArpRequest(sw, pi, arp, eth); |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 285 | } |
| 286 | else if (arp.getOpCode() == ARP.OP_REPLY) { |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 287 | //handleArpReply(sw, pi, arp); |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 288 | } |
| 289 | } |
| 290 | |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 291 | //TODO should we propagate ARP or swallow it? |
| 292 | //Always propagate for now so DeviceManager can learn the host location |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 293 | return Command.CONTINUE; |
| 294 | } |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 295 | |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 296 | private void handleArpRequest(IOFSwitch sw, OFPacketIn pi, ARP arp, Ethernet eth) { |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 297 | if (log.isTraceEnabled()) { |
| 298 | log.trace("ARP request received for {}", |
| 299 | inetAddressToString(arp.getTargetProtocolAddress())); |
| 300 | } |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 301 | |
| 302 | InetAddress target; |
| 303 | try { |
| 304 | target = InetAddress.getByAddress(arp.getTargetProtocolAddress()); |
| 305 | } catch (UnknownHostException e) { |
| 306 | log.debug("Invalid address in ARP request", e); |
| 307 | return; |
| 308 | } |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 309 | |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 310 | if (configService.fromExternalNetwork(sw.getId(), pi.getInPort())) { |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 311 | //If the request came from outside our network, we only care if |
| 312 | //it was a request for one of our interfaces. |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 313 | if (configService.isInterfaceAddress(target)) { |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 314 | log.trace("ARP request for our interface. Sending reply {} => {}", |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 315 | target.getHostAddress(), configService.getRouterMacAddress()); |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 316 | |
| 317 | sendArpReply(arp, sw.getId(), pi.getInPort(), |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 318 | configService.getRouterMacAddress()); |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 319 | } |
Jonathan Hart | 6e61821 | 2013-08-21 22:28:43 +1200 | [diff] [blame] | 320 | |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 321 | return; |
| 322 | } |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 323 | |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 324 | //MACAddress macAddress = arpCache.lookup(target); |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 325 | |
Jonathan Hart | d6ed62b | 2013-11-01 13:18:25 -0700 | [diff] [blame] | 326 | IDeviceObject targetDevice = |
| 327 | deviceStorage.getDeviceByIP(InetAddresses.coerceToInteger(target)); |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 328 | |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 329 | log.debug("targetDevice: {}", targetDevice); |
| 330 | |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 331 | if (targetDevice != null) { |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 332 | // We have the device in our database, so send a reply |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 333 | MACAddress macAddress = MACAddress.valueOf(targetDevice.getMACAddress()); |
| 334 | |
| 335 | if (log.isTraceEnabled()) { |
| 336 | log.trace("Sending reply: {} => {} to host at {}/{}", new Object [] { |
| 337 | inetAddressToString(arp.getTargetProtocolAddress()), |
| 338 | macAddress.toString(), |
| 339 | HexString.toHexString(sw.getId()), pi.getInPort()}); |
| 340 | } |
| 341 | |
| 342 | sendArpReply(arp, sw.getId(), pi.getInPort(), macAddress); |
| 343 | } |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 344 | else { |
| 345 | // We don't know the device so broadcast the request out |
| 346 | // the edge of the network |
| 347 | |
| 348 | //Record where the request came from so we know where to send the reply |
| 349 | arpRequests.put(target, new ArpRequest( |
| 350 | new HostArpRequester(arp, sw.getId(), pi.getInPort()), false)); |
| 351 | |
Jonathan Hart | 5ea7cc0 | 2013-11-12 11:56:23 -0800 | [diff] [blame] | 352 | sendToOtherNodes(eth, pi); |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 353 | } |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 354 | |
| 355 | /*if (macAddress == null){ |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 356 | //MAC address is not in our ARP cache. |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 357 | |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 358 | //Record where the request came from so we know where to send the reply |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 359 | //arpRequests.put(target, new ArpRequest( |
| 360 | //new HostArpRequester(arp, sw.getId(), pi.getInPort()), false)); |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 361 | |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 362 | //Flood the request out edge ports |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 363 | //sendArpRequestToSwitches(target, pi.getPacketData(), sw.getId(), pi.getInPort()); |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 364 | } |
| 365 | else { |
| 366 | //We know the address, so send a reply |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 367 | if (log.isTraceEnabled()) { |
| 368 | log.trace("Sending reply: {} => {} to host at {}/{}", new Object [] { |
| 369 | inetAddressToString(arp.getTargetProtocolAddress()), |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 370 | macAddress.toString(), |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 371 | HexString.toHexString(sw.getId()), pi.getInPort()}); |
| 372 | } |
Jonathan Hart | 1633a40 | 2013-08-24 11:38:56 +1200 | [diff] [blame] | 373 | |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 374 | sendArpReply(arp, sw.getId(), pi.getInPort(), macAddress); |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 375 | }*/ |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 376 | } |
| 377 | |
Naoki Shiota | e2f4da7 | 2013-12-09 16:34:17 -0800 | [diff] [blame^] | 378 | @SuppressWarnings("unused") |
Jonathan Hart | 1912afc | 2013-10-11 12:02:44 +1300 | [diff] [blame] | 379 | private void handleArpReply(IOFSwitch sw, OFPacketIn pi, ARP arp){ |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 380 | if (log.isTraceEnabled()) { |
| 381 | log.trace("ARP reply recieved: {} => {}, on {}/{}", new Object[] { |
| 382 | inetAddressToString(arp.getSenderProtocolAddress()), |
| 383 | HexString.toHexString(arp.getSenderHardwareAddress()), |
| 384 | HexString.toHexString(sw.getId()), pi.getInPort()}); |
| 385 | } |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 386 | |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 387 | InetAddress senderIpAddress; |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 388 | try { |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 389 | senderIpAddress = InetAddress.getByAddress(arp.getSenderProtocolAddress()); |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 390 | } catch (UnknownHostException e) { |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 391 | log.debug("Invalid address in ARP reply", e); |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 392 | return; |
| 393 | } |
| 394 | |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 395 | MACAddress senderMacAddress = MACAddress.valueOf(arp.getSenderHardwareAddress()); |
| 396 | |
| 397 | arpCache.update(senderIpAddress, senderMacAddress); |
| 398 | |
| 399 | //See if anyone's waiting for this ARP reply |
| 400 | Set<ArpRequest> requests = arpRequests.get(senderIpAddress); |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 401 | |
| 402 | //Synchronize on the Multimap while using an iterator for one of the sets |
Jonathan Hart | e751e1c | 2013-08-23 00:48:47 +1200 | [diff] [blame] | 403 | List<ArpRequest> requestsToSend = new ArrayList<ArpRequest>(requests.size()); |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 404 | synchronized (arpRequests) { |
| 405 | Iterator<ArpRequest> it = requests.iterator(); |
| 406 | while (it.hasNext()) { |
| 407 | ArpRequest request = it.next(); |
| 408 | it.remove(); |
Jonathan Hart | e751e1c | 2013-08-23 00:48:47 +1200 | [diff] [blame] | 409 | requestsToSend.add(request); |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 410 | } |
| 411 | } |
Jonathan Hart | e751e1c | 2013-08-23 00:48:47 +1200 | [diff] [blame] | 412 | |
| 413 | //Don't hold an ARP lock while dispatching requests |
| 414 | for (ArpRequest request : requestsToSend) { |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 415 | request.dispatchReply(senderIpAddress, senderMacAddress); |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 416 | } |
| 417 | } |
| 418 | |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 419 | private void sendArpRequestForAddress(InetAddress ipAddress) { |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 420 | //TODO what should the sender IP address and MAC address be if no |
| 421 | //IP addresses are configured? Will there ever be a need to send |
| 422 | //ARP requests from the controller in that case? |
| 423 | //All-zero MAC address doesn't seem to work - hosts don't respond to it |
| 424 | |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 425 | byte[] zeroIpv4 = {0x0, 0x0, 0x0, 0x0}; |
| 426 | byte[] zeroMac = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0}; |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 427 | byte[] genericNonZeroMac = {0x0, 0x0, 0x0, 0x0, 0x0, 0x01}; |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 428 | byte[] broadcastMac = {(byte)0xff, (byte)0xff, (byte)0xff, |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 429 | (byte)0xff, (byte)0xff, (byte)0xff}; |
| 430 | |
| 431 | ARP arpRequest = new ARP(); |
| 432 | |
| 433 | arpRequest.setHardwareType(ARP.HW_TYPE_ETHERNET) |
| 434 | .setProtocolType(ARP.PROTO_TYPE_IP) |
| 435 | .setHardwareAddressLength((byte)Ethernet.DATALAYER_ADDRESS_LENGTH) |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 436 | .setProtocolAddressLength((byte)IPv4.ADDRESS_LENGTH) |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 437 | .setOpCode(ARP.OP_REQUEST) |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 438 | .setTargetHardwareAddress(zeroMac) |
| 439 | .setTargetProtocolAddress(ipAddress.getAddress()); |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 440 | |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 441 | MACAddress routerMacAddress = configService.getRouterMacAddress(); |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 442 | //TODO hack for now as it's unclear what the MAC address should be |
| 443 | byte[] senderMacAddress = genericNonZeroMac; |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 444 | if (routerMacAddress != null) { |
| 445 | senderMacAddress = routerMacAddress.toBytes(); |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 446 | } |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 447 | arpRequest.setSenderHardwareAddress(senderMacAddress); |
| 448 | |
| 449 | byte[] senderIPAddress = zeroIpv4; |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 450 | Interface intf = configService.getOutgoingInterface(ipAddress); |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 451 | if (intf != null) { |
| 452 | senderIPAddress = intf.getIpAddress().getAddress(); |
| 453 | } |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 454 | |
| 455 | arpRequest.setSenderProtocolAddress(senderIPAddress); |
| 456 | |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 457 | Ethernet eth = new Ethernet(); |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 458 | eth.setSourceMACAddress(senderMacAddress) |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 459 | .setDestinationMACAddress(broadcastMac) |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 460 | .setEtherType(Ethernet.TYPE_ARP) |
| 461 | .setPayload(arpRequest); |
| 462 | |
Jonathan Hart | 1cf9de0 | 2013-10-21 17:42:29 -0700 | [diff] [blame] | 463 | if (vlan != NO_VLAN) { |
| 464 | eth.setVlanID(vlan) |
| 465 | .setPriorityCode((byte)0); |
| 466 | } |
| 467 | |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 468 | sendArpRequestToSwitches(ipAddress, eth.serialize()); |
| 469 | } |
| 470 | |
| 471 | private void sendArpRequestToSwitches(InetAddress dstAddress, byte[] arpRequest) { |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 472 | sendArpRequestToSwitches(dstAddress, arpRequest, |
| 473 | 0, OFPort.OFPP_NONE.getValue()); |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 474 | } |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 475 | |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 476 | private void sendArpRequestToSwitches(InetAddress dstAddress, byte[] arpRequest, |
| 477 | long inSwitch, short inPort) { |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 478 | |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 479 | if (configService.hasLayer3Configuration()) { |
| 480 | Interface intf = configService.getOutgoingInterface(dstAddress); |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 481 | if (intf != null) { |
| 482 | sendArpRequestOutPort(arpRequest, intf.getDpid(), intf.getPort()); |
| 483 | } |
| 484 | else { |
| 485 | //TODO here it should be broadcast out all non-interface edge ports. |
| 486 | //I think we can assume that if it's not a request for an external |
| 487 | //network, it's an ARP for a host in our own network. So we want to |
| 488 | //send it out all edge ports that don't have an interface configured |
| 489 | //to ensure it reaches all hosts in our network. |
| 490 | log.debug("No interface found to send ARP request for {}", |
| 491 | dstAddress.getHostAddress()); |
| 492 | } |
| 493 | } |
| 494 | else { |
| 495 | broadcastArpRequestOutEdge(arpRequest, inSwitch, inPort); |
| 496 | } |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 497 | } |
| 498 | |
Jonathan Hart | 5ea7cc0 | 2013-11-12 11:56:23 -0800 | [diff] [blame] | 499 | private void sendToOtherNodes(Ethernet eth, OFPacketIn pi) { |
| 500 | ARP arp = (ARP) eth.getPayload(); |
Jonathan Hart | d300325 | 2013-11-15 09:44:46 -0800 | [diff] [blame] | 501 | |
Jonathan Hart | 5ea7cc0 | 2013-11-12 11:56:23 -0800 | [diff] [blame] | 502 | if (log.isTraceEnabled()) { |
| 503 | log.trace("Sending ARP request for {} to other ONOS instances", |
Jonathan Hart | 9a21e0d | 2013-11-14 15:09:09 -0800 | [diff] [blame] | 504 | inetAddressToString(arp.getTargetProtocolAddress())); |
Jonathan Hart | 5ea7cc0 | 2013-11-12 11:56:23 -0800 | [diff] [blame] | 505 | } |
Jonathan Hart | d300325 | 2013-11-15 09:44:46 -0800 | [diff] [blame] | 506 | |
| 507 | InetAddress targetAddress; |
| 508 | try { |
| 509 | targetAddress = InetAddress.getByAddress(arp.getTargetProtocolAddress()); |
| 510 | } catch (UnknownHostException e) { |
| 511 | log.error("Unknown host", e); |
| 512 | return; |
| 513 | } |
| 514 | |
| 515 | datagrid.sendArpRequest(ArpMessage.newRequest(targetAddress, eth.serialize())); |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 516 | } |
| 517 | |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 518 | private void broadcastArpRequestOutEdge(byte[] arpRequest, long inSwitch, short inPort) { |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 519 | for (IOFSwitch sw : floodlightProvider.getSwitches().values()){ |
| 520 | Collection<Short> enabledPorts = sw.getEnabledPortNumbers(); |
| 521 | Set<Short> linkPorts = topology.getPortsWithLinks(sw.getId()); |
| 522 | |
Jonathan Hart | 8ec133c | 2013-06-26 15:25:18 +1200 | [diff] [blame] | 523 | if (linkPorts == null){ |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 524 | //I think this means the switch doesn't have any links. |
| 525 | //continue; |
| 526 | linkPorts = new HashSet<Short>(); |
Jonathan Hart | 8ec133c | 2013-06-26 15:25:18 +1200 | [diff] [blame] | 527 | } |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 528 | |
Jonathan Hart | a18e479 | 2013-10-31 10:10:54 -0700 | [diff] [blame] | 529 | |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 530 | OFPacketOut po = new OFPacketOut(); |
| 531 | po.setInPort(OFPort.OFPP_NONE) |
| 532 | .setBufferId(-1) |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 533 | .setPacketData(arpRequest); |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 534 | |
| 535 | List<OFAction> actions = new ArrayList<OFAction>(); |
| 536 | |
| 537 | for (short portNum : enabledPorts){ |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 538 | if (linkPorts.contains(portNum) || |
| 539 | (sw.getId() == inSwitch && portNum == inPort)){ |
| 540 | //If this port isn't an edge port or is the ingress port |
| 541 | //for the ARP, don't broadcast out it |
| 542 | continue; |
| 543 | } |
| 544 | |
| 545 | actions.add(new OFActionOutput(portNum)); |
| 546 | } |
| 547 | |
| 548 | po.setActions(actions); |
| 549 | short actionsLength = (short) (actions.size() * OFActionOutput.MINIMUM_LENGTH); |
| 550 | po.setActionsLength(actionsLength); |
| 551 | po.setLengthU(OFPacketOut.MINIMUM_LENGTH + actionsLength |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 552 | + arpRequest.length); |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 553 | |
| 554 | List<OFMessage> msgList = new ArrayList<OFMessage>(); |
| 555 | msgList.add(po); |
| 556 | |
| 557 | try { |
| 558 | sw.write(msgList, null); |
| 559 | sw.flush(); |
| 560 | } catch (IOException e) { |
| 561 | log.error("Failure writing packet out to switch", e); |
| 562 | } |
| 563 | } |
| 564 | } |
| 565 | |
Jonathan Hart | 9a21e0d | 2013-11-14 15:09:09 -0800 | [diff] [blame] | 566 | private void broadcastArpRequestOutMyEdge(byte[] arpRequest) { |
Jonathan Hart | ba9ced9 | 2013-11-24 16:52:13 -0800 | [diff] [blame] | 567 | List<SwitchPort> switchPorts = new ArrayList<SwitchPort>(); |
| 568 | |
Jonathan Hart | 9a21e0d | 2013-11-14 15:09:09 -0800 | [diff] [blame] | 569 | for (IOFSwitch sw : floodlightProvider.getSwitches().values()) { |
| 570 | |
| 571 | OFPacketOut po = new OFPacketOut(); |
| 572 | po.setInPort(OFPort.OFPP_NONE) |
| 573 | .setBufferId(-1) |
| 574 | .setPacketData(arpRequest); |
| 575 | |
| 576 | List<OFAction> actions = new ArrayList<OFAction>(); |
| 577 | |
| 578 | Iterable<IPortObject> ports |
| 579 | = topoSwitchService.getPortsOnSwitch(sw.getStringId()); |
| 580 | if (ports == null) { |
| 581 | continue; |
| 582 | } |
| 583 | |
| 584 | for (IPortObject portObject : ports) { |
| 585 | if (!portObject.getLinkedPorts().iterator().hasNext()) { |
Jonathan Hart | ba9ced9 | 2013-11-24 16:52:13 -0800 | [diff] [blame] | 586 | switchPorts.add(new SwitchPort(new Dpid(sw.getId()), |
| 587 | new Port(portObject.getNumber()))); |
Jonathan Hart | 9a21e0d | 2013-11-14 15:09:09 -0800 | [diff] [blame] | 588 | actions.add(new OFActionOutput(portObject.getNumber())); |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | po.setActions(actions); |
| 593 | short actionsLength = (short) |
| 594 | (actions.size() * OFActionOutput.MINIMUM_LENGTH); |
| 595 | po.setActionsLength(actionsLength); |
| 596 | po.setLengthU(OFPacketOut.MINIMUM_LENGTH + actionsLength |
| 597 | + arpRequest.length); |
| 598 | |
| 599 | try { |
| 600 | sw.write(po, null); |
| 601 | sw.flush(); |
| 602 | } catch (IOException e) { |
| 603 | log.error("Failure writing packet out to switch", e); |
| 604 | } |
| 605 | } |
Jonathan Hart | ba9ced9 | 2013-11-24 16:52:13 -0800 | [diff] [blame] | 606 | |
| 607 | log.debug("Broadcast ARP request for to: {}", switchPorts); |
Jonathan Hart | 9a21e0d | 2013-11-14 15:09:09 -0800 | [diff] [blame] | 608 | } |
| 609 | |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 610 | private void sendArpRequestOutPort(byte[] arpRequest, long dpid, short port) { |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 611 | if (log.isTraceEnabled()) { |
| 612 | log.trace("Sending ARP request out {}/{}", |
| 613 | HexString.toHexString(dpid), port); |
| 614 | } |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 615 | |
| 616 | OFPacketOut po = new OFPacketOut(); |
| 617 | po.setInPort(OFPort.OFPP_NONE) |
| 618 | .setBufferId(-1) |
| 619 | .setPacketData(arpRequest); |
| 620 | |
| 621 | List<OFAction> actions = new ArrayList<OFAction>(); |
| 622 | actions.add(new OFActionOutput(port)); |
| 623 | po.setActions(actions); |
| 624 | short actionsLength = (short) (actions.size() * OFActionOutput.MINIMUM_LENGTH); |
| 625 | po.setActionsLength(actionsLength); |
| 626 | po.setLengthU(OFPacketOut.MINIMUM_LENGTH + actionsLength |
| 627 | + arpRequest.length); |
| 628 | |
| 629 | IOFSwitch sw = floodlightProvider.getSwitches().get(dpid); |
| 630 | |
| 631 | if (sw == null) { |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 632 | log.warn("Switch not found when sending ARP request"); |
Jonathan Hart | 2f790d2 | 2013-08-15 14:01:24 +1200 | [diff] [blame] | 633 | return; |
| 634 | } |
| 635 | |
| 636 | try { |
| 637 | sw.write(po, null); |
| 638 | sw.flush(); |
| 639 | } catch (IOException e) { |
| 640 | log.error("Failure writing packet out to switch", e); |
| 641 | } |
| 642 | } |
| 643 | |
Jonathan Hart | da4d0e1 | 2013-09-30 21:00:20 +1300 | [diff] [blame] | 644 | private void sendArpReply(ARP arpRequest, long dpid, short port, MACAddress targetMac) { |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 645 | if (log.isTraceEnabled()) { |
| 646 | log.trace("Sending reply {} => {} to {}", new Object[] { |
| 647 | inetAddressToString(arpRequest.getTargetProtocolAddress()), |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 648 | targetMac, |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 649 | inetAddressToString(arpRequest.getSenderProtocolAddress())}); |
| 650 | } |
Jonathan Hart | 1633a40 | 2013-08-24 11:38:56 +1200 | [diff] [blame] | 651 | |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 652 | ARP arpReply = new ARP(); |
| 653 | arpReply.setHardwareType(ARP.HW_TYPE_ETHERNET) |
| 654 | .setProtocolType(ARP.PROTO_TYPE_IP) |
| 655 | .setHardwareAddressLength((byte)Ethernet.DATALAYER_ADDRESS_LENGTH) |
Jonathan Hart | 08ee852 | 2013-09-22 17:34:43 +1200 | [diff] [blame] | 656 | .setProtocolAddressLength((byte)IPv4.ADDRESS_LENGTH) |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 657 | .setOpCode(ARP.OP_REPLY) |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 658 | .setSenderHardwareAddress(targetMac.toBytes()) |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 659 | .setSenderProtocolAddress(arpRequest.getTargetProtocolAddress()) |
| 660 | .setTargetHardwareAddress(arpRequest.getSenderHardwareAddress()) |
| 661 | .setTargetProtocolAddress(arpRequest.getSenderProtocolAddress()); |
| 662 | |
Jonathan Hart | 1cf9de0 | 2013-10-21 17:42:29 -0700 | [diff] [blame] | 663 | |
| 664 | |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 665 | Ethernet eth = new Ethernet(); |
| 666 | eth.setDestinationMACAddress(arpRequest.getSenderHardwareAddress()) |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 667 | .setSourceMACAddress(targetMac.toBytes()) |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 668 | .setEtherType(Ethernet.TYPE_ARP) |
| 669 | .setPayload(arpReply); |
| 670 | |
Jonathan Hart | 1cf9de0 | 2013-10-21 17:42:29 -0700 | [diff] [blame] | 671 | if (vlan != NO_VLAN) { |
| 672 | eth.setVlanID(vlan) |
| 673 | .setPriorityCode((byte)0); |
| 674 | } |
| 675 | |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 676 | List<OFAction> actions = new ArrayList<OFAction>(); |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 677 | actions.add(new OFActionOutput(port)); |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 678 | |
| 679 | OFPacketOut po = new OFPacketOut(); |
| 680 | po.setInPort(OFPort.OFPP_NONE) |
| 681 | .setBufferId(-1) |
Jonathan Hart | 8ec133c | 2013-06-26 15:25:18 +1200 | [diff] [blame] | 682 | .setPacketData(eth.serialize()) |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 683 | .setActions(actions) |
| 684 | .setActionsLength((short)OFActionOutput.MINIMUM_LENGTH) |
| 685 | .setLengthU(OFPacketOut.MINIMUM_LENGTH + OFActionOutput.MINIMUM_LENGTH |
| 686 | + po.getPacketData().length); |
| 687 | |
| 688 | List<OFMessage> msgList = new ArrayList<OFMessage>(); |
| 689 | msgList.add(po); |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 690 | |
| 691 | IOFSwitch sw = floodlightProvider.getSwitches().get(dpid); |
| 692 | |
| 693 | if (sw == null) { |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 694 | log.warn("Switch {} not found when sending ARP reply", |
Jonathan Hart | 1633a40 | 2013-08-24 11:38:56 +1200 | [diff] [blame] | 695 | HexString.toHexString(dpid)); |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 696 | return; |
| 697 | } |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 698 | |
| 699 | try { |
| 700 | sw.write(msgList, null); |
| 701 | sw.flush(); |
| 702 | } catch (IOException e) { |
Jonathan Hart | 5b803bc | 2013-09-23 14:46:11 +1200 | [diff] [blame] | 703 | log.error("Failure writing packet out to switch", e); |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 704 | } |
| 705 | } |
Jonathan Hart | da4d0e1 | 2013-09-30 21:00:20 +1300 | [diff] [blame] | 706 | |
| 707 | private String inetAddressToString(byte[] bytes) { |
| 708 | try { |
| 709 | return InetAddress.getByAddress(bytes).getHostAddress(); |
| 710 | } catch (UnknownHostException e) { |
| 711 | log.debug("Invalid IP address", e); |
| 712 | return ""; |
| 713 | } |
| 714 | } |
| 715 | |
| 716 | /* |
| 717 | * IProxyArpService methods |
| 718 | */ |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 719 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 720 | @Override |
Jonathan Hart | abad6a5 | 2013-09-30 18:17:21 +1300 | [diff] [blame] | 721 | public MACAddress getMacAddress(InetAddress ipAddress) { |
| 722 | return arpCache.lookup(ipAddress); |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 723 | } |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 724 | |
| 725 | @Override |
| 726 | public void sendArpRequest(InetAddress ipAddress, IArpRequester requester, |
| 727 | boolean retry) { |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 728 | arpRequests.put(ipAddress, new ArpRequest(requester, retry)); |
Jonathan Hart | f0c0dcb | 2013-07-24 15:28:42 +1200 | [diff] [blame] | 729 | |
Jonathan Hart | 6e61821 | 2013-08-21 22:28:43 +1200 | [diff] [blame] | 730 | //Sanity check to make sure we don't send a request for our own address |
Jonathan Hart | a888764 | 2013-10-28 13:46:54 -0700 | [diff] [blame] | 731 | if (!configService.isInterfaceAddress(ipAddress)) { |
Jonathan Hart | 6e61821 | 2013-08-21 22:28:43 +1200 | [diff] [blame] | 732 | sendArpRequestForAddress(ipAddress); |
| 733 | } |
| 734 | } |
Jonathan Hart | 5afde49 | 2013-10-01 12:30:53 +1300 | [diff] [blame] | 735 | |
| 736 | @Override |
| 737 | public List<String> getMappings() { |
| 738 | return arpCache.getMappings(); |
| 739 | } |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 740 | |
| 741 | /* |
| 742 | * IArpEventHandler methods |
| 743 | */ |
| 744 | |
| 745 | @Override |
Jonathan Hart | d300325 | 2013-11-15 09:44:46 -0800 | [diff] [blame] | 746 | public void arpRequestNotification(ArpMessage arpMessage) { |
Jonathan Hart | ba9ced9 | 2013-11-24 16:52:13 -0800 | [diff] [blame] | 747 | //log.debug("Received ARP notification from other instances"); |
Jonathan Hart | d300325 | 2013-11-15 09:44:46 -0800 | [diff] [blame] | 748 | |
| 749 | switch (arpMessage.getType()){ |
| 750 | case REQUEST: |
Jonathan Hart | ba9ced9 | 2013-11-24 16:52:13 -0800 | [diff] [blame] | 751 | log.debug("Received ARP request notification for {}", |
| 752 | arpMessage.getAddress()); |
Jonathan Hart | d300325 | 2013-11-15 09:44:46 -0800 | [diff] [blame] | 753 | broadcastArpRequestOutMyEdge(arpMessage.getPacket()); |
| 754 | break; |
| 755 | case REPLY: |
Jonathan Hart | ba9ced9 | 2013-11-24 16:52:13 -0800 | [diff] [blame] | 756 | log.debug("Received ARP reply notification for {}", |
| 757 | arpMessage.getAddress()); |
Jonathan Hart | d300325 | 2013-11-15 09:44:46 -0800 | [diff] [blame] | 758 | sendArpReplyToWaitingRequesters(arpMessage.getAddress()); |
| 759 | break; |
| 760 | } |
| 761 | } |
| 762 | |
| 763 | private void sendArpReplyToWaitingRequesters(InetAddress address) { |
| 764 | log.debug("Sending ARP reply for {} to requesters", |
| 765 | address.getHostAddress()); |
| 766 | |
| 767 | //See if anyone's waiting for this ARP reply |
| 768 | Set<ArpRequest> requests = arpRequests.get(address); |
| 769 | |
| 770 | //Synchronize on the Multimap while using an iterator for one of the sets |
| 771 | List<ArpRequest> requestsToSend = new ArrayList<ArpRequest>(requests.size()); |
| 772 | synchronized (arpRequests) { |
| 773 | Iterator<ArpRequest> it = requests.iterator(); |
| 774 | while (it.hasNext()) { |
| 775 | ArpRequest request = it.next(); |
| 776 | it.remove(); |
| 777 | requestsToSend.add(request); |
| 778 | } |
| 779 | } |
| 780 | |
| 781 | IDeviceObject deviceObject = deviceStorage.getDeviceByIP( |
| 782 | InetAddresses.coerceToInteger(address)); |
| 783 | |
| 784 | MACAddress mac = MACAddress.valueOf(deviceObject.getMACAddress()); |
| 785 | |
| 786 | log.debug("Found {} at {} in network map", |
| 787 | address.getHostAddress(), mac); |
| 788 | |
| 789 | //Don't hold an ARP lock while dispatching requests |
| 790 | for (ArpRequest request : requestsToSend) { |
| 791 | request.dispatchReply(address, mac); |
| 792 | } |
Jonathan Hart | 18ad55c | 2013-11-11 22:49:55 -0800 | [diff] [blame] | 793 | } |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 794 | } |