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