HIGUCHI Yuta | ea60e5f | 2013-06-12 11:10:21 -0700 | [diff] [blame] | 1 | package net.onrc.onos.ofcontroller.bgproute; |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 2 | |
Jonathan Hart | d1f2325 | 2013-06-13 15:17:05 +1200 | [diff] [blame] | 3 | import java.io.File; |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 4 | import java.io.IOException; |
| 5 | import java.net.InetAddress; |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 6 | import java.net.UnknownHostException; |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 7 | import java.util.ArrayList; |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 8 | import java.util.Collection; |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 9 | import java.util.HashMap; |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 10 | import java.util.Iterator; |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 11 | import java.util.List; |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 12 | import java.util.Map; |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 13 | import java.util.Set; |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 14 | import java.util.concurrent.BlockingQueue; |
| 15 | import java.util.concurrent.ExecutorService; |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 16 | import java.util.concurrent.Executors; |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 17 | import java.util.concurrent.LinkedBlockingQueue; |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 18 | import java.util.concurrent.ScheduledExecutorService; |
| 19 | import java.util.concurrent.TimeUnit; |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 20 | |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 21 | import net.floodlightcontroller.core.IFloodlightProviderService; |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 22 | import net.floodlightcontroller.core.IOFSwitch; |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 23 | import net.floodlightcontroller.core.IOFSwitchListener; |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 24 | import net.floodlightcontroller.core.module.FloodlightModuleContext; |
| 25 | import net.floodlightcontroller.core.module.FloodlightModuleException; |
| 26 | import net.floodlightcontroller.core.module.IFloodlightModule; |
| 27 | import net.floodlightcontroller.core.module.IFloodlightService; |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 28 | import net.floodlightcontroller.core.util.SingletonTask; |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 29 | import net.floodlightcontroller.devicemanager.IDeviceService; |
| 30 | import net.floodlightcontroller.packet.Ethernet; |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 31 | import net.floodlightcontroller.packet.IPv4; |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 32 | import net.floodlightcontroller.restserver.IRestApiService; |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 33 | import net.floodlightcontroller.routing.Link; |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 34 | import net.floodlightcontroller.topology.ITopologyListener; |
| 35 | import net.floodlightcontroller.topology.ITopologyService; |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 36 | import net.floodlightcontroller.util.MACAddress; |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 37 | import net.onrc.onos.ofcontroller.bgproute.RibUpdate.Operation; |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 38 | import net.onrc.onos.ofcontroller.core.INetMapTopologyService.ITopoLinkService; |
HIGUCHI Yuta | 2051490 | 2013-06-12 11:24:16 -0700 | [diff] [blame] | 39 | import net.onrc.onos.ofcontroller.core.INetMapTopologyService.ITopoRouteService; |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 40 | import net.onrc.onos.ofcontroller.core.internal.TopoLinkServiceImpl; |
HIGUCHI Yuta | a56fbde | 2013-06-17 14:26:05 -0700 | [diff] [blame] | 41 | import net.onrc.onos.ofcontroller.linkdiscovery.ILinkDiscovery; |
| 42 | import net.onrc.onos.ofcontroller.linkdiscovery.ILinkDiscovery.LDUpdate; |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 43 | import net.onrc.onos.ofcontroller.proxyarp.IArpRequester; |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 44 | import net.onrc.onos.ofcontroller.proxyarp.ProxyArpManager; |
Pavlin Radoslavov | ddd01ba | 2013-07-03 15:40:44 -0700 | [diff] [blame] | 45 | import net.onrc.onos.ofcontroller.routing.TopoRouteService; |
HIGUCHI Yuta | 356086e | 2013-06-12 15:21:19 -0700 | [diff] [blame] | 46 | import net.onrc.onos.ofcontroller.util.DataPath; |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 47 | import net.onrc.onos.ofcontroller.util.Dpid; |
HIGUCHI Yuta | 356086e | 2013-06-12 15:21:19 -0700 | [diff] [blame] | 48 | import net.onrc.onos.ofcontroller.util.FlowEntry; |
HIGUCHI Yuta | 356086e | 2013-06-12 15:21:19 -0700 | [diff] [blame] | 49 | import net.onrc.onos.ofcontroller.util.Port; |
| 50 | import net.onrc.onos.ofcontroller.util.SwitchPort; |
pingping-lin | e2a09ca | 2013-03-23 09:33:58 +0800 | [diff] [blame] | 51 | import net.sf.json.JSONArray; |
| 52 | import net.sf.json.JSONObject; |
| 53 | import net.sf.json.JSONSerializer; |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 54 | |
Jonathan Hart | d1f2325 | 2013-06-13 15:17:05 +1200 | [diff] [blame] | 55 | import org.codehaus.jackson.JsonParseException; |
| 56 | import org.codehaus.jackson.map.JsonMappingException; |
| 57 | import org.codehaus.jackson.map.ObjectMapper; |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 58 | import org.openflow.protocol.OFFlowMod; |
| 59 | import org.openflow.protocol.OFMatch; |
| 60 | import org.openflow.protocol.OFMessage; |
| 61 | import org.openflow.protocol.OFPacketOut; |
Jonathan Hart | 9575cb6 | 2013-07-05 13:43:49 +1200 | [diff] [blame] | 62 | import org.openflow.protocol.OFPort; |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 63 | import org.openflow.protocol.OFType; |
| 64 | import org.openflow.protocol.action.OFAction; |
| 65 | import org.openflow.protocol.action.OFActionDataLayerDestination; |
| 66 | import org.openflow.protocol.action.OFActionOutput; |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 67 | import org.openflow.util.HexString; |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 68 | import org.slf4j.Logger; |
| 69 | import org.slf4j.LoggerFactory; |
| 70 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 71 | import com.google.common.collect.HashMultimap; |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 72 | import com.google.common.collect.Multimap; |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 73 | import com.google.common.collect.Multimaps; |
| 74 | import com.google.common.collect.SetMultimap; |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 75 | import com.google.common.util.concurrent.ThreadFactoryBuilder; |
| 76 | |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 77 | public class BgpRoute implements IFloodlightModule, IBgpRouteService, |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 78 | ITopologyListener, IOFSwitchListener, |
| 79 | IArpRequester { |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 80 | |
| 81 | protected static Logger log = LoggerFactory.getLogger(BgpRoute.class); |
| 82 | |
| 83 | protected IFloodlightProviderService floodlightProvider; |
| 84 | protected ITopologyService topology; |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 85 | protected ITopoRouteService topoRouteService; |
| 86 | protected IDeviceService devices; |
| 87 | protected IRestApiService restApi; |
| 88 | |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 89 | protected ProxyArpManager proxyArp; |
| 90 | |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 91 | //protected static Ptree ptree; |
| 92 | protected IPatriciaTrie ptree; |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 93 | protected BlockingQueue<RibUpdate> ribUpdates; |
| 94 | |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 95 | protected String bgpdRestIp; |
| 96 | protected String routerId; |
Jonathan Hart | 9575cb6 | 2013-07-05 13:43:49 +1200 | [diff] [blame] | 97 | protected String configFilename = "config.json"; |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 98 | |
| 99 | //We need to identify our flows somehow. But like it says in LearningSwitch.java, |
| 100 | //the controller/OS should hand out cookie IDs to prevent conflicts. |
| 101 | protected final long APP_COOKIE = 0xa0000000000000L; |
| 102 | //Cookie for flows that do L2 forwarding within SDN domain to egress routers |
| 103 | protected final long L2_FWD_COOKIE = APP_COOKIE + 1; |
| 104 | //Cookie for flows in ingress switches that rewrite the MAC address |
| 105 | protected final long MAC_RW_COOKIE = APP_COOKIE + 2; |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 106 | //Cookie for flows that setup BGP paths |
| 107 | protected final long BGP_COOKIE = APP_COOKIE + 3; |
Jonathan Hart | 50a8d1e | 2013-06-06 16:00:47 +1200 | [diff] [blame] | 108 | //Forwarding uses priority 0, and the mac rewrite entries in ingress switches |
| 109 | //need to be higher priority than this otherwise the rewrite may not get done |
| 110 | protected final short SDNIP_PRIORITY = 10; |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 111 | |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 112 | protected final short BGP_PORT = 179; |
| 113 | |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 114 | protected final int TOPO_DETECTION_WAIT = 2; //seconds |
| 115 | |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 116 | //Configuration stuff |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 117 | protected List<String> switches; |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 118 | protected Map<String, Interface> interfaces; |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 119 | protected Map<InetAddress, BgpPeer> bgpPeers; |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 120 | protected SwitchPort bgpdAttachmentPoint; |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 121 | |
| 122 | //True when all switches have connected |
| 123 | protected volatile boolean switchesConnected = false; |
| 124 | //True when we have a full mesh of shortest paths between gateways |
| 125 | protected volatile boolean topologyReady = false; |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 126 | |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 127 | protected ArrayList<LDUpdate> linkUpdates; |
| 128 | protected SingletonTask topologyChangeDetectorTask; |
| 129 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 130 | protected SetMultimap<InetAddress, RibUpdate> prefixesWaitingOnArp; |
| 131 | protected SetMultimap<InetAddress, PathUpdate> pathsWaitingOnArp; |
| 132 | |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 133 | protected Multimap<Prefix, PushedFlowMod> pushedFlows; |
| 134 | |
| 135 | private class PushedFlowMod { |
| 136 | private long dpid; |
| 137 | private OFFlowMod flowMod; |
| 138 | |
| 139 | public PushedFlowMod(long dpid, OFFlowMod flowMod) { |
| 140 | this.dpid = dpid; |
| 141 | this.flowMod = flowMod; |
| 142 | } |
| 143 | |
| 144 | public long getDpid() { |
| 145 | return dpid; |
| 146 | } |
| 147 | |
| 148 | public OFFlowMod getFlowMod() { |
| 149 | return flowMod; |
| 150 | } |
| 151 | } |
| 152 | |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 153 | protected class TopologyChangeDetector implements Runnable { |
| 154 | @Override |
| 155 | public void run() { |
| 156 | log.debug("Running topology change detection task"); |
| 157 | synchronized (linkUpdates) { |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 158 | //This is the model the REST API uses to retrieve network graph info |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 159 | ITopoLinkService topoLinkService = new TopoLinkServiceImpl(); |
| 160 | |
| 161 | List<Link> activeLinks = topoLinkService.getActiveLinks(); |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 162 | |
| 163 | Iterator<LDUpdate> it = linkUpdates.iterator(); |
| 164 | while (it.hasNext()){ |
| 165 | LDUpdate ldu = it.next(); |
| 166 | Link l = new Link(ldu.getSrc(), ldu.getSrcPort(), |
| 167 | ldu.getDst(), ldu.getDstPort()); |
| 168 | |
| 169 | if (activeLinks.contains(l)){ |
| 170 | log.debug("Not found: {}", l); |
| 171 | it.remove(); |
| 172 | } |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | if (linkUpdates.isEmpty()){ |
| 177 | //All updates have been seen in network map. |
| 178 | //We can check if topology is ready |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 179 | log.debug("No known changes outstanding. Checking topology now"); |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 180 | checkStatus(); |
| 181 | } |
| 182 | else { |
| 183 | //We know of some link updates that haven't propagated to the database yet |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 184 | log.debug("Some changes not found in network map - {} links missing", linkUpdates.size()); |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 185 | topologyChangeDetectorTask.reschedule(TOPO_DETECTION_WAIT, TimeUnit.SECONDS); |
| 186 | } |
| 187 | } |
| 188 | } |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 189 | |
Jonathan Hart | d1f2325 | 2013-06-13 15:17:05 +1200 | [diff] [blame] | 190 | private void readGatewaysConfiguration(String gatewaysFilename){ |
| 191 | File gatewaysFile = new File(gatewaysFilename); |
| 192 | ObjectMapper mapper = new ObjectMapper(); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 193 | |
Jonathan Hart | d1f2325 | 2013-06-13 15:17:05 +1200 | [diff] [blame] | 194 | try { |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 195 | Configuration config = mapper.readValue(gatewaysFile, Configuration.class); |
| 196 | |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 197 | switches = config.getSwitches(); |
Jonathan Hart | 9575cb6 | 2013-07-05 13:43:49 +1200 | [diff] [blame] | 198 | interfaces = new HashMap<String, Interface>(); |
| 199 | for (Interface intf : config.getInterfaces()){ |
| 200 | interfaces.put(intf.getName(), intf); |
| 201 | } |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 202 | bgpPeers = new HashMap<InetAddress, BgpPeer>(); |
| 203 | for (BgpPeer peer : config.getPeers()){ |
| 204 | bgpPeers.put(peer.getIpAddress(), peer); |
| 205 | } |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 206 | |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 207 | bgpdAttachmentPoint = new SwitchPort( |
| 208 | new Dpid(config.getBgpdAttachmentDpid()), |
| 209 | new Port(config.getBgpdAttachmentPort())); |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 210 | |
Jonathan Hart | d1f2325 | 2013-06-13 15:17:05 +1200 | [diff] [blame] | 211 | } catch (JsonParseException e) { |
| 212 | log.error("Error in JSON file", e); |
| 213 | System.exit(1); |
| 214 | } catch (JsonMappingException e) { |
| 215 | log.error("Error in JSON file", e); |
| 216 | System.exit(1); |
| 217 | } catch (IOException e) { |
| 218 | log.error("Error reading JSON file", e); |
| 219 | System.exit(1); |
| 220 | } |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 221 | } |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 222 | |
| 223 | @Override |
| 224 | public Collection<Class<? extends IFloodlightService>> getModuleServices() { |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 225 | Collection<Class<? extends IFloodlightService>> l |
| 226 | = new ArrayList<Class<? extends IFloodlightService>>(); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 227 | l.add(IBgpRouteService.class); |
| 228 | return l; |
| 229 | } |
| 230 | |
| 231 | @Override |
| 232 | public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() { |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 233 | Map<Class<? extends IFloodlightService>, IFloodlightService> m |
| 234 | = new HashMap<Class<? extends IFloodlightService>, IFloodlightService>(); |
pingping-lin | e2a09ca | 2013-03-23 09:33:58 +0800 | [diff] [blame] | 235 | m.put(IBgpRouteService.class, this); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 236 | return m; |
| 237 | } |
| 238 | |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 239 | @Override |
| 240 | public Collection<Class<? extends IFloodlightService>> getModuleDependencies() { |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 241 | Collection<Class<? extends IFloodlightService>> l |
| 242 | = new ArrayList<Class<? extends IFloodlightService>>(); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 243 | l.add(IFloodlightProviderService.class); |
| 244 | l.add(ITopologyService.class); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 245 | l.add(IDeviceService.class); |
| 246 | l.add(IRestApiService.class); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 247 | return l; |
| 248 | } |
| 249 | |
| 250 | @Override |
| 251 | public void init(FloodlightModuleContext context) |
| 252 | throws FloodlightModuleException { |
| 253 | |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 254 | //ptree = new Ptree(32); |
| 255 | ptree = new PatriciaTrie(32); |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 256 | |
| 257 | ribUpdates = new LinkedBlockingQueue<RibUpdate>(); |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 258 | |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 259 | // Register floodlight provider and REST handler. |
| 260 | floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 261 | topology = context.getServiceImpl(ITopologyService.class); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 262 | devices = context.getServiceImpl(IDeviceService.class); |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 263 | restApi = context.getServiceImpl(IRestApiService.class); |
| 264 | |
| 265 | //TODO We'll initialise this here for now, but it should really be done as |
| 266 | //part of the controller core |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 267 | proxyArp = new ProxyArpManager(floodlightProvider, topology, devices); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 268 | |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 269 | linkUpdates = new ArrayList<LDUpdate>(); |
| 270 | ScheduledExecutorService executor = Executors.newScheduledThreadPool(1); |
| 271 | topologyChangeDetectorTask = new SingletonTask(executor, new TopologyChangeDetector()); |
Pavlin Radoslavov | ddd01ba | 2013-07-03 15:40:44 -0700 | [diff] [blame] | 272 | |
| 273 | topoRouteService = new TopoRouteService(""); |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 274 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 275 | pathsWaitingOnArp = Multimaps.synchronizedSetMultimap( |
| 276 | HashMultimap.<InetAddress, PathUpdate>create()); |
| 277 | prefixesWaitingOnArp = Multimaps.synchronizedSetMultimap( |
| 278 | HashMultimap.<InetAddress, RibUpdate>create()); |
| 279 | |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 280 | pushedFlows = HashMultimap.<Prefix, PushedFlowMod>create(); |
| 281 | |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 282 | //Read in config values |
| 283 | bgpdRestIp = context.getConfigParams(this).get("BgpdRestIp"); |
| 284 | if (bgpdRestIp == null){ |
| 285 | log.error("BgpdRestIp property not found in config file"); |
| 286 | System.exit(1); |
| 287 | } |
| 288 | else { |
| 289 | log.info("BgpdRestIp set to {}", bgpdRestIp); |
| 290 | } |
| 291 | |
| 292 | routerId = context.getConfigParams(this).get("RouterId"); |
| 293 | if (routerId == null){ |
| 294 | log.error("RouterId property not found in config file"); |
| 295 | System.exit(1); |
| 296 | } |
| 297 | else { |
| 298 | log.info("RouterId set to {}", routerId); |
| 299 | } |
Jonathan Hart | d1f2325 | 2013-06-13 15:17:05 +1200 | [diff] [blame] | 300 | |
Jonathan Hart | 9575cb6 | 2013-07-05 13:43:49 +1200 | [diff] [blame] | 301 | String configFilenameParameter = context.getConfigParams(this).get("configfile"); |
| 302 | if (configFilenameParameter != null){ |
| 303 | configFilename = configFilenameParameter; |
| 304 | } |
| 305 | log.debug("Config file set to {}", configFilename); |
| 306 | |
| 307 | readGatewaysConfiguration(configFilename); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 308 | // Test. |
| 309 | //test(); |
| 310 | } |
| 311 | |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 312 | //public Ptree getPtree() { |
| 313 | public IPatriciaTrie getPtree() { |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 314 | return ptree; |
| 315 | } |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 316 | |
| 317 | public void clearPtree() { |
| 318 | //ptree = null; |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 319 | //ptree = new Ptree(32); |
| 320 | ptree = new PatriciaTrie(32); |
pingping-lin | e2a09ca | 2013-03-23 09:33:58 +0800 | [diff] [blame] | 321 | } |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 322 | |
pingping-lin | e2a09ca | 2013-03-23 09:33:58 +0800 | [diff] [blame] | 323 | public String getBGPdRestIp() { |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 324 | return bgpdRestIp; |
pingping-lin | e2a09ca | 2013-03-23 09:33:58 +0800 | [diff] [blame] | 325 | } |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 326 | |
pingping-lin | e2a09ca | 2013-03-23 09:33:58 +0800 | [diff] [blame] | 327 | public String getRouterId() { |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 328 | return routerId; |
pingping-lin | e2a09ca | 2013-03-23 09:33:58 +0800 | [diff] [blame] | 329 | } |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 330 | |
| 331 | // Return nexthop address as byte array. |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 332 | /* |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 333 | public Rib lookupRib(byte[] dest) { |
| 334 | if (ptree == null) { |
| 335 | log.debug("lookupRib: ptree null"); |
| 336 | return null; |
| 337 | } |
| 338 | |
| 339 | PtreeNode node = ptree.match(dest, 32); |
| 340 | if (node == null) { |
| 341 | log.debug("lookupRib: ptree node null"); |
| 342 | return null; |
| 343 | } |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 344 | |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 345 | if (node.rib == null) { |
| 346 | log.debug("lookupRib: ptree rib null"); |
| 347 | return null; |
| 348 | } |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 349 | |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 350 | ptree.delReference(node); |
| 351 | |
| 352 | return node.rib; |
| 353 | } |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 354 | */ |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 355 | |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 356 | /* |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 357 | //TODO looks like this should be a unit test |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 358 | @SuppressWarnings("unused") |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 359 | private void test() throws UnknownHostException { |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 360 | System.out.println("Here it is"); |
| 361 | Prefix p = new Prefix("128.0.0.0", 8); |
| 362 | Prefix q = new Prefix("8.0.0.0", 8); |
| 363 | Prefix r = new Prefix("10.0.0.0", 24); |
| 364 | Prefix a = new Prefix("10.0.0.1", 32); |
| 365 | |
Jonathan Hart | d1b9d87 | 2013-07-23 12:17:21 +1200 | [diff] [blame] | 366 | ptree.acquire(p.getAddress(), p.getPrefixLength()); |
| 367 | ptree.acquire(q.getAddress(), q.getPrefixLength()); |
| 368 | ptree.acquire(r.getAddress(), r.getPrefixLength()); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 369 | |
| 370 | System.out.println("Traverse start"); |
| 371 | for (PtreeNode node = ptree.begin(); node != null; node = ptree.next(node)) { |
| 372 | Prefix p_result = new Prefix(node.key, node.keyBits); |
| 373 | } |
| 374 | |
Jonathan Hart | d1b9d87 | 2013-07-23 12:17:21 +1200 | [diff] [blame] | 375 | PtreeNode n = ptree.match(a.getAddress(), a.getPrefixLength()); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 376 | if (n != null) { |
| 377 | System.out.println("Matched prefix for 10.0.0.1:"); |
| 378 | Prefix x = new Prefix(n.key, n.keyBits); |
| 379 | ptree.delReference(n); |
| 380 | } |
| 381 | |
Jonathan Hart | d1b9d87 | 2013-07-23 12:17:21 +1200 | [diff] [blame] | 382 | n = ptree.lookup(p.getAddress(), p.getPrefixLength()); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 383 | if (n != null) { |
| 384 | ptree.delReference(n); |
| 385 | ptree.delReference(n); |
| 386 | } |
| 387 | System.out.println("Traverse start"); |
| 388 | for (PtreeNode node = ptree.begin(); node != null; node = ptree.next(node)) { |
| 389 | Prefix p_result = new Prefix(node.key, node.keyBits); |
| 390 | } |
| 391 | |
Jonathan Hart | d1b9d87 | 2013-07-23 12:17:21 +1200 | [diff] [blame] | 392 | n = ptree.lookup(q.getAddress(), q.getPrefixLength()); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 393 | if (n != null) { |
| 394 | ptree.delReference(n); |
| 395 | ptree.delReference(n); |
| 396 | } |
| 397 | System.out.println("Traverse start"); |
| 398 | for (PtreeNode node = ptree.begin(); node != null; node = ptree.next(node)) { |
| 399 | Prefix p_result = new Prefix(node.key, node.keyBits); |
| 400 | } |
| 401 | |
Jonathan Hart | d1b9d87 | 2013-07-23 12:17:21 +1200 | [diff] [blame] | 402 | n = ptree.lookup(r.getAddress(), r.getPrefixLength()); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 403 | if (n != null) { |
| 404 | ptree.delReference(n); |
| 405 | ptree.delReference(n); |
| 406 | } |
| 407 | System.out.println("Traverse start"); |
| 408 | for (PtreeNode node = ptree.begin(); node != null; node = ptree.next(node)) { |
| 409 | Prefix p_result = new Prefix(node.key, node.keyBits); |
| 410 | } |
| 411 | |
| 412 | } |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 413 | */ |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 414 | |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 415 | //TODO once the Ptree is object oriented this can go |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 416 | private String getPrefixFromPtree(PtreeNode node){ |
| 417 | InetAddress address = null; |
| 418 | try { |
| 419 | address = InetAddress.getByAddress(node.key); |
| 420 | } catch (UnknownHostException e1) { |
| 421 | //Should never happen is the reverse conversion has already been done |
| 422 | log.error("Malformed IP address"); |
| 423 | return ""; |
| 424 | } |
| 425 | return address.toString() + "/" + node.rib.masklen; |
| 426 | } |
| 427 | |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 428 | private void retrieveRib(){ |
| 429 | String url = "http://" + bgpdRestIp + "/wm/bgp/" + routerId; |
| 430 | String response = RestClient.get(url); |
| 431 | |
| 432 | if (response.equals("")){ |
| 433 | return; |
| 434 | } |
| 435 | |
| 436 | response = response.replaceAll("\"", "'"); |
| 437 | JSONObject jsonObj = (JSONObject) JSONSerializer.toJSON(response); |
| 438 | JSONArray rib_json_array = jsonObj.getJSONArray("rib"); |
| 439 | String router_id = jsonObj.getString("router-id"); |
| 440 | |
| 441 | int size = rib_json_array.size(); |
| 442 | |
| 443 | log.info("Retrived RIB of {} entries from BGPd", size); |
| 444 | |
| 445 | for (int j = 0; j < size; j++) { |
| 446 | JSONObject second_json_object = rib_json_array.getJSONObject(j); |
| 447 | String prefix = second_json_object.getString("prefix"); |
| 448 | String nexthop = second_json_object.getString("nexthop"); |
| 449 | |
| 450 | //insert each rib entry into the local rib; |
| 451 | String[] substring = prefix.split("/"); |
| 452 | String prefix1 = substring[0]; |
| 453 | String mask1 = substring[1]; |
| 454 | |
| 455 | Prefix p; |
| 456 | try { |
| 457 | p = new Prefix(prefix1, Integer.valueOf(mask1)); |
| 458 | } catch (NumberFormatException e) { |
| 459 | log.warn("Wrong mask format in RIB JSON: {}", mask1); |
| 460 | continue; |
Jonathan Hart | 32e1822 | 2013-08-07 22:05:42 +1200 | [diff] [blame] | 461 | } catch (IllegalArgumentException e1) { |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 462 | log.warn("Wrong prefix format in RIB JSON: {}", prefix1); |
| 463 | continue; |
| 464 | } |
| 465 | |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 466 | //PtreeNode node = ptree.acquire(p.getAddress(), p.getPrefixLength()); |
Jonathan Hart | d1b9d87 | 2013-07-23 12:17:21 +1200 | [diff] [blame] | 467 | Rib rib = new Rib(router_id, nexthop, p.getPrefixLength()); |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 468 | |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 469 | /* |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 470 | if (node.rib != null) { |
| 471 | node.rib = null; |
| 472 | ptree.delReference(node); |
| 473 | } |
| 474 | |
| 475 | node.rib = rib; |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 476 | */ |
| 477 | |
| 478 | ptree.put(p, rib); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 479 | |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 480 | addPrefixFlows(p, rib); |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 481 | } |
| 482 | } |
| 483 | |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 484 | @Override |
| 485 | public void newRibUpdate(RibUpdate update) { |
| 486 | ribUpdates.add(update); |
| 487 | } |
| 488 | |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 489 | public void processRibAdd(RibUpdate update) { |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 490 | Prefix prefix = update.getPrefix(); |
| 491 | |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 492 | //PtreeNode node = ptree.acquire(prefix.getAddress(), prefix.getPrefixLength()); |
| 493 | Rib rib = ptree.put(prefix, update.getRibEntry()); |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 494 | |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 495 | //if (node.rib != null) { |
| 496 | if (rib != null) { |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 497 | //There was an existing nexthop for this prefix. This update supersedes that, |
| 498 | //so we need to remove the old flows for this prefix from the switches |
| 499 | deletePrefixFlows(prefix); |
| 500 | |
| 501 | //Then remove the old nexthop from the Ptree |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 502 | //node.rib = null; |
| 503 | //ptree.delReference(node); |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 504 | } |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 505 | |
| 506 | //Put the new nexthop in the Ptree |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 507 | //node.rib = update.getRibEntry(); |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 508 | |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 509 | //Push flows for the new <prefix, nexthop> |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 510 | addPrefixFlows(prefix, update.getRibEntry()); |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 511 | } |
| 512 | |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 513 | public void processRibDelete(RibUpdate update) { |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 514 | Prefix prefix = update.getPrefix(); |
| 515 | |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 516 | //PtreeNode node = ptree.lookup(prefix.getAddress(), prefix.getPrefixLength()); |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 517 | |
| 518 | /* |
| 519 | * Remove the flows from the switches before the rib is lost |
| 520 | * Theory: we could get a delete for a prefix not in the Ptree. |
| 521 | * This would result in a null node being returned. We could get a delete for |
| 522 | * a node that's not actually there, but is a aggregate node. This would result |
| 523 | * in a non-null node with a null rib. Only a non-null node with a non-null |
| 524 | * rib is an actual prefix in the Ptree. |
| 525 | */ |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 526 | |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 527 | /* |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 528 | if (node != null && node.rib != null) { |
| 529 | if (update.getRibEntry().equals(node.rib)) { |
| 530 | node.rib = null; |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 531 | ptree.delReference(node); |
| 532 | |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 533 | deletePrefixFlows(update.getPrefix()); |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 534 | } |
| 535 | } |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 536 | */ |
| 537 | |
| 538 | if (ptree.remove(prefix, update.getRibEntry())) { |
| 539 | /* |
| 540 | * Only delete flows if an entry was actually removed from the trie. |
| 541 | * If no entry was removed, the <prefix, nexthop> wasn't there so |
| 542 | * it's probably already been removed and we don't need to do anything |
| 543 | */ |
| 544 | deletePrefixFlows(prefix); |
| 545 | } |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 546 | } |
| 547 | |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 548 | //TODO compatibility layer, used by beginRouting() |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 549 | /*public void prefixAdded(PtreeNode node) { |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 550 | Prefix prefix = null; |
| 551 | try { |
| 552 | prefix = new Prefix(node.key, node.rib.masklen); |
Jonathan Hart | 32e1822 | 2013-08-07 22:05:42 +1200 | [diff] [blame] | 553 | } catch (IllegalArgumentException e) { |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 554 | log.error(" ", e); |
| 555 | } |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 556 | |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 557 | addPrefixFlows(prefix, node.rib); |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 558 | }*/ |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 559 | |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 560 | private void addPrefixFlows(Prefix prefix, Rib rib) { |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 561 | if (!topologyReady){ |
| 562 | return; |
| 563 | } |
| 564 | |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 565 | //TODO before we do anything, we have to check that the RIB entry is still in the |
| 566 | //Ptree because it could have been removed while we were waiting for ARP. |
| 567 | //I think we'll have to make prefixAdded and prefixDelete atomic as well |
| 568 | //to protect against the prefix getting deleted while where trying to add it |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 569 | |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 570 | log.debug("New prefix {} added, next hop {}, routerId {}", |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 571 | new Object[] {prefix, rib.nextHop.getHostAddress(), |
| 572 | rib.routerId.getHostAddress()}); |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 573 | |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 574 | //TODO this is wrong, we shouldn't be dealing with BGP peers here. |
Jonathan Hart | 6261dcd | 2013-07-22 17:58:35 +1200 | [diff] [blame] | 575 | //We need to figure out where the device is attached and what its |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 576 | //mac address is by learning. |
| 577 | //The next hop is not necessarily the peer, and the peer's attachment |
| 578 | //point is not necessarily the next hop's attachment point. |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 579 | BgpPeer peer = bgpPeers.get(rib.nextHop); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 580 | |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 581 | if (peer == null){ |
| 582 | //TODO local router isn't in peers list so this will get thrown |
Jonathan Hart | 50a8d1e | 2013-06-06 16:00:47 +1200 | [diff] [blame] | 583 | //Need to work out what to do about local prefixes with next hop 0.0.0.0. |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 584 | |
| 585 | //The other scenario is this is a route server route. In that |
| 586 | //case the next hop is not in our configuration |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 587 | log.error("Couldn't find next hop router in router {} in config", |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 588 | rib.nextHop.getHostAddress()); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 589 | return; //just quit out here? This is probably a configuration error |
| 590 | } |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 591 | |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 592 | //Get MAC address for peer from the ARP module |
| 593 | //TODO separate out the 'ask for MAC' bit to another method |
| 594 | byte[] peerMacAddress = proxyArp.getMacAddress(peer.getIpAddress()); |
| 595 | if (peerMacAddress == null) { |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 596 | //A RibUpdate is still a nice way to package them up |
| 597 | prefixesWaitingOnArp.put(peer.getIpAddress(), |
| 598 | new RibUpdate(Operation.UPDATE, prefix, rib)); |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 599 | proxyArp.sendArpRequest(peer.getIpAddress(), this, true); |
| 600 | return; |
| 601 | } |
| 602 | |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 603 | Interface peerInterface = interfaces.get(peer.getInterfaceName()); |
Jonathan Hart | 50a8d1e | 2013-06-06 16:00:47 +1200 | [diff] [blame] | 604 | |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 605 | //Add a flow to rewrite mac for this prefix to all border switches |
| 606 | for (Interface srcInterface : interfaces.values()) { |
| 607 | if (srcInterface == peerInterface) { |
| 608 | //Don't push a flow for the switch where this peer is attached |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 609 | continue; |
| 610 | } |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 611 | |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 612 | DataPath shortestPath = topoRouteService.getShortestPath( |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 613 | srcInterface.getSwitchPort(), |
| 614 | peerInterface.getSwitchPort()); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 615 | |
| 616 | if (shortestPath == null){ |
| 617 | log.debug("Shortest path between {} and {} not found", |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 618 | srcInterface.getSwitchPort(), |
| 619 | peerInterface.getSwitchPort()); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 620 | return; // just quit here? |
| 621 | } |
| 622 | |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 623 | //Set up the flow mod |
| 624 | OFFlowMod fm = |
| 625 | (OFFlowMod) floodlightProvider.getOFMessageFactory() |
| 626 | .getMessage(OFType.FLOW_MOD); |
| 627 | |
| 628 | fm.setIdleTimeout((short)0) |
| 629 | .setHardTimeout((short)0) |
| 630 | .setBufferId(OFPacketOut.BUFFER_ID_NONE) |
| 631 | .setCookie(MAC_RW_COOKIE) |
| 632 | .setCommand(OFFlowMod.OFPFC_ADD) |
Jonathan Hart | 50a8d1e | 2013-06-06 16:00:47 +1200 | [diff] [blame] | 633 | .setPriority(SDNIP_PRIORITY) |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 634 | .setLengthU(OFFlowMod.MINIMUM_LENGTH |
| 635 | + OFActionDataLayerDestination.MINIMUM_LENGTH |
| 636 | + OFActionOutput.MINIMUM_LENGTH); |
| 637 | |
| 638 | OFMatch match = new OFMatch(); |
| 639 | match.setDataLayerType(Ethernet.TYPE_IPv4); |
Jonathan Hart | 50a8d1e | 2013-06-06 16:00:47 +1200 | [diff] [blame] | 640 | match.setWildcards(match.getWildcards() & ~OFMatch.OFPFW_DL_TYPE); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 641 | |
Jonathan Hart | 50a8d1e | 2013-06-06 16:00:47 +1200 | [diff] [blame] | 642 | InetAddress address = null; |
| 643 | try { |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 644 | address = InetAddress.getByAddress(prefix.getAddress()); |
Jonathan Hart | 50a8d1e | 2013-06-06 16:00:47 +1200 | [diff] [blame] | 645 | } catch (UnknownHostException e1) { |
| 646 | //Should never happen is the reverse conversion has already been done |
| 647 | log.error("Malformed IP address"); |
| 648 | return; |
| 649 | } |
| 650 | |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 651 | match.setFromCIDR(address.getHostAddress() + "/" + |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 652 | prefix.getPrefixLength(), OFMatch.STR_NW_DST); |
Jonathan Hart | 50a8d1e | 2013-06-06 16:00:47 +1200 | [diff] [blame] | 653 | fm.setMatch(match); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 654 | |
| 655 | //Set up MAC rewrite action |
| 656 | OFActionDataLayerDestination macRewriteAction = new OFActionDataLayerDestination(); |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 657 | //TODO the peer's mac address is not necessarily the next hop's... |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 658 | macRewriteAction.setDataLayerAddress(peerMacAddress); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 659 | |
| 660 | //Set up output action |
| 661 | OFActionOutput outputAction = new OFActionOutput(); |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 662 | outputAction.setMaxLength((short)0xffff); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 663 | |
Jonathan Hart | 50a8d1e | 2013-06-06 16:00:47 +1200 | [diff] [blame] | 664 | Port outputPort = shortestPath.flowEntries().get(0).outPort(); |
| 665 | outputAction.setPort(outputPort.value()); |
| 666 | |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 667 | List<OFAction> actions = new ArrayList<OFAction>(); |
| 668 | actions.add(macRewriteAction); |
| 669 | actions.add(outputAction); |
| 670 | fm.setActions(actions); |
| 671 | |
| 672 | //Write to switch |
| 673 | IOFSwitch sw = floodlightProvider.getSwitches() |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 674 | .get(srcInterface.getDpid()); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 675 | |
| 676 | if (sw == null){ |
| 677 | log.warn("Switch not found when pushing flow mod"); |
| 678 | continue; |
| 679 | } |
| 680 | |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 681 | //TODO if prefix Added/Deleted are synchronized this shouldn't have to be |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 682 | pushedFlows.put(prefix, new PushedFlowMod(sw.getId(), fm)); |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 683 | |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 684 | List<OFMessage> msglist = new ArrayList<OFMessage>(); |
| 685 | msglist.add(fm); |
| 686 | try { |
| 687 | sw.write(msglist, null); |
| 688 | sw.flush(); |
| 689 | } catch (IOException e) { |
| 690 | log.error("Failure writing flow mod", e); |
| 691 | } |
| 692 | } |
| 693 | } |
| 694 | |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 695 | //TODO test next-hop changes |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 696 | //TODO check delete/add synchronization |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 697 | |
| 698 | private void deletePrefixFlows(Prefix prefix) { |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 699 | if (!topologyReady) { |
| 700 | return; |
| 701 | } |
| 702 | |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 703 | log.debug("In deletePrefixFlows for {}", prefix); |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 704 | |
| 705 | /*for (Map.Entry<Prefix, PushedFlowMod> entry : pushedFlows.entries()) { |
| 706 | log.debug("Pushed flow: {} => {}", entry.getKey(), entry.getValue()); |
| 707 | }*/ |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 708 | |
| 709 | Collection<PushedFlowMod> pushedFlowMods |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 710 | = pushedFlows.removeAll(prefix); |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 711 | |
| 712 | for (PushedFlowMod pfm : pushedFlowMods) { |
| 713 | log.debug("Pushing a DELETE flow mod to {}, matches prefix {} with mac-rewrite {}", |
| 714 | new Object[] {HexString.toHexString(pfm.getDpid()), |
| 715 | pfm.getFlowMod().getMatch().getNetworkDestination() + |
| 716 | pfm.getFlowMod().getMatch().getNetworkDestinationMaskLen(), |
| 717 | HexString.toHexString(((OFActionDataLayerDestination)pfm.getFlowMod().getActions().get(0)) |
| 718 | .getDataLayerAddress())}); |
| 719 | |
| 720 | OFFlowMod fm = pfm.getFlowMod(); |
| 721 | |
| 722 | fm.setCommand(OFFlowMod.OFPFC_DELETE) |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 723 | .setOutPort(OFPort.OFPP_NONE) |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 724 | .setLengthU(OFFlowMod.MINIMUM_LENGTH); |
| 725 | |
| 726 | fm.getActions().clear(); |
| 727 | |
| 728 | IOFSwitch sw = floodlightProvider.getSwitches().get(pfm.getDpid()); |
| 729 | if (sw == null) { |
| 730 | log.warn("Switch not found when pushing delete flow mod"); |
| 731 | continue; |
| 732 | } |
| 733 | |
| 734 | try { |
| 735 | sw.write(fm, null); |
| 736 | sw.flush(); |
| 737 | } catch (IOException e) { |
| 738 | log.error("Failure writing flow mod", e); |
| 739 | } |
| 740 | } |
| 741 | } |
| 742 | |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 743 | /* |
| 744 | * On startup we need to calculate a full mesh of paths between all gateway |
| 745 | * switches |
| 746 | */ |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 747 | private void setupFullMesh(){ |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 748 | //For each border router, calculate and install a path from every other |
| 749 | //border switch to said border router. However, don't install the entry |
| 750 | //in to the first hop switch, as we need to install an entry to rewrite |
| 751 | //for each prefix received. This will be done later when prefixes have |
| 752 | //actually been received. |
| 753 | |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 754 | for (BgpPeer peer : bgpPeers.values()) { |
| 755 | Interface peerInterface = interfaces.get(peer.getInterfaceName()); |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 756 | |
| 757 | //See if we know the MAC address of the peer. If not we can't |
| 758 | //do anything until we learn it |
| 759 | byte[] mac = proxyArp.getMacAddress(peer.getIpAddress()); |
| 760 | if (mac == null) { |
| 761 | log.debug("Don't know MAC for {}", peer.getIpAddress().getHostAddress()); |
| 762 | //Put in the pending paths list first |
| 763 | pathsWaitingOnArp.put(peer.getIpAddress(), |
| 764 | new PathUpdate(peerInterface, peer.getIpAddress())); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 765 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 766 | proxyArp.sendArpRequest(peer.getIpAddress(), this, true); |
| 767 | continue; |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 768 | } |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 769 | |
| 770 | //If we know the MAC, lets go ahead and push the paths to this peer |
| 771 | calculateAndPushPath(peerInterface, MACAddress.valueOf(mac)); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 772 | } |
| 773 | } |
| 774 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 775 | private void calculateAndPushPath(Interface dstInterface, MACAddress dstMacAddress) { |
| 776 | for (Interface srcInterface : interfaces.values()) { |
| 777 | if (dstInterface.equals(srcInterface.getName())){ |
| 778 | continue; |
| 779 | } |
| 780 | |
| 781 | DataPath shortestPath = topoRouteService.getShortestPath( |
| 782 | srcInterface.getSwitchPort(), dstInterface.getSwitchPort()); |
| 783 | |
| 784 | if (shortestPath == null){ |
| 785 | log.debug("Shortest path between {} and {} not found", |
| 786 | srcInterface.getSwitchPort(), dstInterface.getSwitchPort()); |
| 787 | return; // just quit here? |
| 788 | } |
| 789 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 790 | installPath(shortestPath.flowEntries(), dstMacAddress); |
| 791 | } |
| 792 | } |
| 793 | |
| 794 | private void installPath(List<FlowEntry> flowEntries, MACAddress dstMacAddress){ |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 795 | //Set up the flow mod |
| 796 | OFFlowMod fm = |
| 797 | (OFFlowMod) floodlightProvider.getOFMessageFactory() |
| 798 | .getMessage(OFType.FLOW_MOD); |
| 799 | |
| 800 | OFActionOutput action = new OFActionOutput(); |
| 801 | action.setMaxLength((short)0xffff); |
| 802 | List<OFAction> actions = new ArrayList<OFAction>(); |
| 803 | actions.add(action); |
| 804 | |
| 805 | fm.setIdleTimeout((short)0) |
| 806 | .setHardTimeout((short)0) |
| 807 | .setBufferId(OFPacketOut.BUFFER_ID_NONE) |
| 808 | .setCookie(L2_FWD_COOKIE) |
| 809 | .setCommand(OFFlowMod.OFPFC_ADD) |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 810 | .setActions(actions) |
| 811 | .setLengthU(OFFlowMod.MINIMUM_LENGTH+OFActionOutput.MINIMUM_LENGTH); |
| 812 | |
| 813 | //Don't push the first flow entry. We need to push entries in the |
| 814 | //first switch based on IP prefix which we don't know yet. |
| 815 | for (int i = 1; i < flowEntries.size(); i++){ |
| 816 | FlowEntry flowEntry = flowEntries.get(i); |
| 817 | |
| 818 | OFMatch match = new OFMatch(); |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 819 | //TODO Again using MAC address from configuration |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 820 | match.setDataLayerDestination(dstMacAddress.toBytes()); |
Jonathan Hart | e7e1c6e | 2013-06-04 20:50:23 -0700 | [diff] [blame] | 821 | match.setWildcards(match.getWildcards() & ~OFMatch.OFPFW_DL_DST); |
| 822 | ((OFActionOutput) fm.getActions().get(0)).setPort(flowEntry.outPort().value()); |
| 823 | |
| 824 | fm.setMatch(match); |
| 825 | |
| 826 | IOFSwitch sw = floodlightProvider.getSwitches().get(flowEntry.dpid().value()); |
| 827 | |
| 828 | if (sw == null){ |
| 829 | log.warn("Switch not found when pushing flow mod"); |
| 830 | continue; |
| 831 | } |
| 832 | |
| 833 | List<OFMessage> msglist = new ArrayList<OFMessage>(); |
| 834 | msglist.add(fm); |
| 835 | try { |
| 836 | sw.write(msglist, null); |
| 837 | sw.flush(); |
| 838 | } catch (IOException e) { |
| 839 | log.error("Failure writing flow mod", e); |
| 840 | } |
| 841 | |
| 842 | try { |
| 843 | fm = fm.clone(); |
| 844 | } catch (CloneNotSupportedException e1) { |
| 845 | log.error("Failure cloning flow mod", e1); |
| 846 | } |
| 847 | } |
| 848 | } |
| 849 | |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 850 | private void setupBgpPaths(){ |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 851 | for (BgpPeer bgpPeer : bgpPeers.values()){ |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 852 | Interface peerInterface = interfaces.get(bgpPeer.getInterfaceName()); |
| 853 | |
| 854 | DataPath path = topoRouteService.getShortestPath( |
| 855 | peerInterface.getSwitchPort(), bgpdAttachmentPoint); |
| 856 | |
| 857 | if (path == null){ |
| 858 | log.debug("Unable to compute path for BGP traffic for {}", |
| 859 | bgpPeer.getIpAddress()); |
| 860 | continue; |
| 861 | } |
| 862 | |
| 863 | //Set up the flow mod |
| 864 | OFFlowMod fm = |
| 865 | (OFFlowMod) floodlightProvider.getOFMessageFactory() |
| 866 | .getMessage(OFType.FLOW_MOD); |
| 867 | |
| 868 | OFActionOutput action = new OFActionOutput(); |
| 869 | action.setMaxLength((short)0xffff); |
| 870 | List<OFAction> actions = new ArrayList<OFAction>(); |
| 871 | actions.add(action); |
| 872 | |
| 873 | fm.setIdleTimeout((short)0) |
| 874 | .setHardTimeout((short)0) |
| 875 | .setBufferId(OFPacketOut.BUFFER_ID_NONE) |
| 876 | .setCookie(BGP_COOKIE) |
| 877 | .setCommand(OFFlowMod.OFPFC_ADD) |
| 878 | .setPriority(SDNIP_PRIORITY) |
| 879 | .setActions(actions) |
| 880 | .setLengthU(OFFlowMod.MINIMUM_LENGTH+OFActionOutput.MINIMUM_LENGTH); |
| 881 | |
| 882 | //Forward = gateway -> bgpd, reverse = bgpd -> gateway |
| 883 | OFMatch forwardMatchSrc = new OFMatch(); |
| 884 | |
| 885 | |
| 886 | String interfaceCidrAddress = peerInterface.getIpAddress().getHostAddress() |
| 887 | + "/32"; |
| 888 | String peerCidrAddress = bgpPeer.getIpAddress().getHostAddress() |
| 889 | + "/32"; |
| 890 | |
| 891 | //Common match fields |
| 892 | forwardMatchSrc.setDataLayerType(Ethernet.TYPE_IPv4); |
| 893 | //forwardMatch.setWildcards(forwardMatch.getWildcards() & ~OFMatch.OFPFW_DL_TYPE); |
| 894 | forwardMatchSrc.setNetworkProtocol(IPv4.PROTOCOL_TCP); |
| 895 | forwardMatchSrc.setTransportDestination(BGP_PORT); |
| 896 | forwardMatchSrc.setWildcards(forwardMatchSrc.getWildcards() & ~OFMatch.OFPFW_IN_PORT |
| 897 | & ~OFMatch.OFPFW_DL_TYPE & ~OFMatch.OFPFW_NW_PROTO); |
| 898 | |
| 899 | |
| 900 | OFMatch reverseMatchSrc = forwardMatchSrc.clone(); |
| 901 | |
| 902 | forwardMatchSrc.setFromCIDR(peerCidrAddress, OFMatch.STR_NW_SRC); |
| 903 | forwardMatchSrc.setFromCIDR(interfaceCidrAddress, OFMatch.STR_NW_DST); |
| 904 | |
| 905 | OFMatch forwardMatchDst = forwardMatchSrc.clone(); |
| 906 | |
| 907 | forwardMatchSrc.setTransportSource(BGP_PORT); |
| 908 | forwardMatchSrc.setWildcards(forwardMatchSrc.getWildcards() & ~OFMatch.OFPFW_TP_SRC); |
| 909 | forwardMatchDst.setTransportDestination(BGP_PORT); |
| 910 | forwardMatchDst.setWildcards(forwardMatchDst.getWildcards() & ~OFMatch.OFPFW_TP_DST); |
| 911 | |
| 912 | reverseMatchSrc.setFromCIDR(interfaceCidrAddress, OFMatch.STR_NW_SRC); |
| 913 | reverseMatchSrc.setFromCIDR(peerCidrAddress, OFMatch.STR_NW_DST); |
| 914 | |
| 915 | OFMatch reverseMatchDst = reverseMatchSrc.clone(); |
| 916 | |
| 917 | reverseMatchSrc.setTransportSource(BGP_PORT); |
| 918 | reverseMatchSrc.setWildcards(forwardMatchSrc.getWildcards() & ~OFMatch.OFPFW_TP_SRC); |
| 919 | reverseMatchDst.setTransportDestination(BGP_PORT); |
| 920 | reverseMatchDst.setWildcards(forwardMatchDst.getWildcards() & ~OFMatch.OFPFW_TP_DST); |
| 921 | |
| 922 | fm.setMatch(forwardMatchSrc); |
| 923 | |
| 924 | for (FlowEntry flowEntry : path.flowEntries()){ |
| 925 | OFFlowMod forwardFlowModSrc, forwardFlowModDst; |
| 926 | OFFlowMod reverseFlowModSrc, reverseFlowModDst; |
| 927 | try { |
| 928 | forwardFlowModSrc = fm.clone(); |
| 929 | forwardFlowModDst = fm.clone(); |
| 930 | reverseFlowModSrc = fm.clone(); |
| 931 | reverseFlowModDst = fm.clone(); |
| 932 | } catch (CloneNotSupportedException e) { |
| 933 | log.warn("Clone failed", e); |
| 934 | continue; |
| 935 | } |
| 936 | |
| 937 | forwardMatchSrc.setInputPort(flowEntry.inPort().value()); |
| 938 | forwardFlowModSrc.setMatch(forwardMatchSrc); |
| 939 | ((OFActionOutput)forwardFlowModSrc.getActions().get(0)) |
| 940 | .setPort(flowEntry.outPort().value()); |
| 941 | |
| 942 | forwardMatchDst.setInputPort(flowEntry.inPort().value()); |
| 943 | forwardFlowModDst.setMatch(forwardMatchDst); |
| 944 | ((OFActionOutput)forwardFlowModDst.getActions().get(0)) |
| 945 | .setPort(flowEntry.outPort().value()); |
| 946 | |
| 947 | reverseMatchSrc.setInputPort(flowEntry.outPort().value()); |
| 948 | reverseFlowModSrc.setMatch(reverseMatchSrc); |
| 949 | ((OFActionOutput)reverseFlowModSrc.getActions().get(0)) |
| 950 | .setPort(flowEntry.inPort().value()); |
| 951 | |
| 952 | reverseMatchDst.setInputPort(flowEntry.outPort().value()); |
| 953 | reverseFlowModDst.setMatch(reverseMatchDst); |
| 954 | ((OFActionOutput)reverseFlowModDst.getActions().get(0)) |
| 955 | .setPort(flowEntry.inPort().value()); |
| 956 | |
| 957 | IOFSwitch sw = floodlightProvider.getSwitches().get(flowEntry.dpid().value()); |
| 958 | |
| 959 | //Hopefully the switch is there |
| 960 | List<OFMessage> msgList = new ArrayList<OFMessage>(2); |
| 961 | msgList.add(forwardFlowModSrc); |
| 962 | msgList.add(forwardFlowModDst); |
| 963 | msgList.add(reverseFlowModSrc); |
| 964 | msgList.add(reverseFlowModDst); |
| 965 | |
| 966 | try { |
| 967 | sw.write(msgList, null); |
| 968 | sw.flush(); |
| 969 | } catch (IOException e) { |
| 970 | log.error("Failure writing flow mod", e); |
| 971 | } |
| 972 | } |
| 973 | } |
| 974 | } |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 975 | |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 976 | @Override |
| 977 | public void arpResponse(InetAddress ipAddress, byte[] macAddress) { |
| 978 | log.debug("Received ARP response: {} => {}", ipAddress.getHostAddress(), |
| 979 | MACAddress.valueOf(macAddress).toString()); |
| 980 | |
| 981 | Set<PathUpdate> pathsToPush = pathsWaitingOnArp.removeAll(ipAddress); |
| 982 | |
| 983 | for (PathUpdate update : pathsToPush) { |
| 984 | log.debug("Pushing path to {} at {} on {}", new Object[] { |
| 985 | update.getDstIpAddress().getHostAddress(), |
| 986 | MACAddress.valueOf(macAddress), |
| 987 | update.getDstInterface().getSwitchPort()}); |
| 988 | calculateAndPushPath(update.getDstInterface(), |
| 989 | MACAddress.valueOf(macAddress)); |
| 990 | } |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 991 | |
| 992 | Set<RibUpdate> prefixesToPush = prefixesWaitingOnArp.removeAll(ipAddress); |
| 993 | |
| 994 | for (RibUpdate update : prefixesToPush) { |
Jonathan Hart | df6ec33 | 2013-08-04 01:37:14 +1200 | [diff] [blame] | 995 | //These will always be adds |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 996 | log.debug("Pushing prefix {} next hop {}", update.getPrefix(), |
| 997 | update.getRibEntry().nextHop.getHostAddress()); |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 998 | addPrefixFlows(update.getPrefix(), update.getRibEntry()); |
Jonathan Hart | 0ee0f02 | 2013-08-03 22:21:54 +1200 | [diff] [blame] | 999 | } |
Jonathan Hart | 4dfc365 | 2013-08-02 20:22:36 +1200 | [diff] [blame] | 1000 | } |
| 1001 | |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1002 | private void beginRouting(){ |
| 1003 | log.debug("Topology is now ready, beginning routing function"); |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 1004 | setupBgpPaths(); |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 1005 | setupFullMesh(); |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1006 | |
Jonathan Hart | 832a7cb | 2013-06-24 11:25:35 +1200 | [diff] [blame] | 1007 | //Traverse ptree and create flows for all routes |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 1008 | /* |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1009 | for (PtreeNode node = ptree.begin(); node != null; node = ptree.next(node)){ |
| 1010 | if (node.rib != null){ |
| 1011 | prefixAdded(node); |
| 1012 | } |
| 1013 | } |
Jonathan Hart | d7e158d | 2013-08-07 23:04:48 +1200 | [diff] [blame^] | 1014 | */ |
| 1015 | |
| 1016 | synchronized (ptree) { |
| 1017 | Iterator<IPatriciaTrie.Entry> it = ptree.iterator(); |
| 1018 | while (it.hasNext()) { |
| 1019 | IPatriciaTrie.Entry entry = it.next(); |
| 1020 | addPrefixFlows(entry.getPrefix(), entry.getRib()); |
| 1021 | } |
| 1022 | } |
| 1023 | |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1024 | } |
| 1025 | |
| 1026 | private void checkSwitchesConnected(){ |
| 1027 | for (String dpid : switches){ |
| 1028 | if (floodlightProvider.getSwitches().get(HexString.toLong(dpid)) == null){ |
| 1029 | log.debug("Not all switches are here yet"); |
| 1030 | return; |
| 1031 | } |
| 1032 | } |
| 1033 | switchesConnected = true; |
| 1034 | } |
| 1035 | |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 1036 | //Actually we only need to go half way round to verify full mesh connectivity |
| 1037 | //(n^2)/2 |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1038 | private void checkTopologyReady(){ |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 1039 | for (Interface dstInterface : interfaces.values()) { |
| 1040 | for (Interface srcInterface : interfaces.values()) { |
| 1041 | if (dstInterface == srcInterface) { |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1042 | continue; |
| 1043 | } |
| 1044 | |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1045 | DataPath shortestPath = topoRouteService.getShortestPath( |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 1046 | srcInterface.getSwitchPort(), dstInterface.getSwitchPort()); |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1047 | |
| 1048 | if (shortestPath == null){ |
| 1049 | log.debug("Shortest path between {} and {} not found", |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 1050 | srcInterface.getSwitchPort(), dstInterface.getSwitchPort()); |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1051 | return; |
| 1052 | } |
| 1053 | } |
| 1054 | } |
| 1055 | topologyReady = true; |
| 1056 | } |
| 1057 | |
| 1058 | private void checkStatus(){ |
| 1059 | log.debug("In checkStatus, swC {}, toRe {}", switchesConnected, topologyReady); |
| 1060 | |
| 1061 | if (!switchesConnected){ |
| 1062 | checkSwitchesConnected(); |
| 1063 | } |
| 1064 | boolean oldTopologyReadyStatus = topologyReady; |
| 1065 | if (switchesConnected && !topologyReady){ |
| 1066 | checkTopologyReady(); |
| 1067 | } |
| 1068 | if (!oldTopologyReadyStatus && topologyReady){ |
| 1069 | beginRouting(); |
| 1070 | } |
| 1071 | } |
| 1072 | |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 1073 | @Override |
| 1074 | public void startUp(FloodlightModuleContext context) { |
pingping-lin | e2a09ca | 2013-03-23 09:33:58 +0800 | [diff] [blame] | 1075 | restApi.addRestletRoutable(new BgpRouteWebRoutable()); |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1076 | floodlightProvider.addOFSwitchListener(this); |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 1077 | topology.addListener(this); |
pingping-lin | e2a09ca | 2013-03-23 09:33:58 +0800 | [diff] [blame] | 1078 | |
Jonathan Hart | c7ca35d | 2013-06-25 20:54:25 +1200 | [diff] [blame] | 1079 | floodlightProvider.addOFMessageListener(OFType.PACKET_IN, proxyArp); |
| 1080 | |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 1081 | ExecutorService e = Executors.newSingleThreadExecutor( |
| 1082 | new ThreadFactoryBuilder().setNameFormat("bgp-updates-%d").build()); |
| 1083 | |
| 1084 | |
| 1085 | e.execute(new Runnable() { |
| 1086 | @Override |
| 1087 | public void run() { |
| 1088 | doUpdatesThread(); |
| 1089 | } |
| 1090 | }); |
| 1091 | |
Jonathan Hart | 61ba937 | 2013-05-19 20:10:29 -0700 | [diff] [blame] | 1092 | //Retrieve the RIB from BGPd during startup |
| 1093 | retrieveRib(); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 1094 | } |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 1095 | |
| 1096 | private void doUpdatesThread() { |
| 1097 | boolean interrupted = false; |
| 1098 | try { |
| 1099 | while (true) { |
| 1100 | try { |
| 1101 | RibUpdate update = ribUpdates.take(); |
| 1102 | switch (update.getOperation()){ |
| 1103 | case UPDATE: |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 1104 | processRibAdd(update); |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 1105 | break; |
| 1106 | case DELETE: |
Jonathan Hart | 2f74078 | 2013-08-04 00:49:21 +1200 | [diff] [blame] | 1107 | processRibDelete(update); |
Jonathan Hart | 8b9349e | 2013-07-26 15:55:28 +1200 | [diff] [blame] | 1108 | break; |
| 1109 | } |
| 1110 | } catch (InterruptedException e) { |
| 1111 | interrupted = true; |
| 1112 | } |
| 1113 | } |
| 1114 | } finally { |
| 1115 | if (interrupted) { |
| 1116 | Thread.currentThread().interrupt(); |
| 1117 | } |
| 1118 | } |
| 1119 | } |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 1120 | |
| 1121 | @Override |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1122 | public void topologyChanged() { |
| 1123 | //There seems to be more topology events than there should be. Lots of link |
| 1124 | //updated, port up and switch updated on what should be a fairly static topology |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 1125 | |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1126 | boolean refreshNeeded = false; |
| 1127 | for (LDUpdate ldu : topology.getLastLinkUpdates()){ |
| 1128 | if (!ldu.getOperation().equals(ILinkDiscovery.UpdateOperation.LINK_UPDATED)){ |
| 1129 | //We don't need to recalculate anything for just link updates |
| 1130 | //They happen way too frequently (may be a bug in our link discovery) |
| 1131 | refreshNeeded = true; |
| 1132 | } |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 1133 | |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1134 | log.debug("Topo change {}", ldu.getOperation()); |
Jonathan Hart | c824ad0 | 2013-07-03 15:58:45 +1200 | [diff] [blame] | 1135 | |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 1136 | if (ldu.getOperation().equals(ILinkDiscovery.UpdateOperation.LINK_ADDED)){ |
| 1137 | synchronized (linkUpdates) { |
| 1138 | linkUpdates.add(ldu); |
| 1139 | } |
| 1140 | } |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1141 | } |
| 1142 | |
| 1143 | if (refreshNeeded){ |
Jonathan Hart | 98957bf | 2013-07-01 14:49:24 +1200 | [diff] [blame] | 1144 | topologyChangeDetectorTask.reschedule(TOPO_DETECTION_WAIT, TimeUnit.SECONDS); |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 1145 | } |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1146 | } |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 1147 | |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1148 | //TODO determine whether we need to listen for switch joins |
| 1149 | @Override |
| 1150 | public void addedSwitch(IOFSwitch sw) { |
| 1151 | //checkStatus(); |
| 1152 | } |
| 1153 | |
| 1154 | @Override |
| 1155 | public void removedSwitch(IOFSwitch sw) { |
| 1156 | // TODO Auto-generated method stub |
| 1157 | } |
| 1158 | |
| 1159 | @Override |
| 1160 | public void switchPortChanged(Long switchId) {} |
Jonathan Hart | 1236a9b | 2013-06-18 22:10:05 +1200 | [diff] [blame] | 1161 | |
| 1162 | @Override |
| 1163 | public String getName() { |
| 1164 | return "BgpRoute"; |
pingping-lin | a2cbfad | 2013-03-07 08:39:21 +0800 | [diff] [blame] | 1165 | } |
| 1166 | } |