| package net.onrc.onos.ofcontroller.bgproute; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| |
| import net.floodlightcontroller.core.IFloodlightProviderService; |
| import net.floodlightcontroller.core.IOFSwitch; |
| import net.floodlightcontroller.core.IOFSwitchListener; |
| import net.floodlightcontroller.core.module.FloodlightModuleContext; |
| import net.floodlightcontroller.core.module.FloodlightModuleException; |
| import net.floodlightcontroller.core.module.IFloodlightModule; |
| import net.floodlightcontroller.core.module.IFloodlightService; |
| import net.floodlightcontroller.core.util.SingletonTask; |
| import net.floodlightcontroller.packet.Ethernet; |
| import net.floodlightcontroller.packet.IPv4; |
| import net.floodlightcontroller.restserver.IRestApiService; |
| import net.floodlightcontroller.routing.Link; |
| import net.floodlightcontroller.topology.ITopologyListener; |
| import net.floodlightcontroller.topology.ITopologyService; |
| import net.floodlightcontroller.util.MACAddress; |
| import net.onrc.onos.ofcontroller.bgproute.RibUpdate.Operation; |
| import net.onrc.onos.ofcontroller.core.INetMapTopologyService.ITopoLinkService; |
| import net.onrc.onos.ofcontroller.core.internal.TopoLinkServiceImpl; |
| import net.onrc.onos.ofcontroller.linkdiscovery.ILinkDiscovery; |
| import net.onrc.onos.ofcontroller.linkdiscovery.ILinkDiscovery.LDUpdate; |
| import net.onrc.onos.ofcontroller.linkdiscovery.ILinkDiscoveryService; |
| import net.onrc.onos.ofcontroller.proxyarp.IArpRequester; |
| import net.onrc.onos.ofcontroller.proxyarp.IProxyArpService; |
| import net.onrc.onos.ofcontroller.proxyarp.ProxyArpManager; |
| import net.onrc.onos.ofcontroller.topology.ITopologyNetService; |
| import net.onrc.onos.ofcontroller.topology.Topology; |
| import net.onrc.onos.ofcontroller.topology.TopologyManager; |
| import net.onrc.onos.ofcontroller.util.DataPath; |
| import net.onrc.onos.ofcontroller.util.Dpid; |
| import net.onrc.onos.ofcontroller.util.FlowEntry; |
| import net.onrc.onos.ofcontroller.util.Port; |
| import net.onrc.onos.ofcontroller.util.SwitchPort; |
| import net.sf.json.JSONArray; |
| import net.sf.json.JSONObject; |
| import net.sf.json.JSONSerializer; |
| |
| import org.codehaus.jackson.JsonParseException; |
| import org.codehaus.jackson.map.JsonMappingException; |
| import org.codehaus.jackson.map.ObjectMapper; |
| import org.openflow.protocol.OFFlowMod; |
| import org.openflow.protocol.OFMatch; |
| import org.openflow.protocol.OFPacketOut; |
| import org.openflow.protocol.OFPort; |
| import org.openflow.protocol.OFType; |
| import org.openflow.protocol.action.OFAction; |
| import org.openflow.protocol.action.OFActionDataLayerDestination; |
| import org.openflow.protocol.action.OFActionOutput; |
| import org.openflow.util.HexString; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.collect.HashMultimap; |
| import com.google.common.collect.Multimap; |
| import com.google.common.collect.Multimaps; |
| import com.google.common.collect.SetMultimap; |
| import com.google.common.net.InetAddresses; |
| import com.google.common.util.concurrent.ThreadFactoryBuilder; |
| |
| public class BgpRoute implements IFloodlightModule, IBgpRouteService, |
| ITopologyListener, IArpRequester, |
| IOFSwitchListener, ILayer3InfoService, |
| IProxyArpService { |
| |
| private final static Logger log = LoggerFactory.getLogger(BgpRoute.class); |
| |
| private IFloodlightProviderService floodlightProvider; |
| private ITopologyService topologyService; |
| private ITopologyNetService topologyNetService; |
| private ILinkDiscoveryService linkDiscoveryService; |
| private IRestApiService restApi; |
| |
| private ProxyArpManager proxyArp; |
| |
| private IPatriciaTrie<RibEntry> ptree; |
| private IPatriciaTrie<Interface> interfacePtrie; |
| private BlockingQueue<RibUpdate> ribUpdates; |
| |
| private String bgpdRestIp; |
| private String routerId; |
| private String configFilename = "config.json"; |
| |
| //We need to identify our flows somehow. But like it says in LearningSwitch.java, |
| //the controller/OS should hand out cookie IDs to prevent conflicts. |
| private final long APP_COOKIE = 0xa0000000000000L; |
| //Cookie for flows that do L2 forwarding within SDN domain to egress routers |
| private final long L2_FWD_COOKIE = APP_COOKIE + 1; |
| //Cookie for flows in ingress switches that rewrite the MAC address |
| private final long MAC_RW_COOKIE = APP_COOKIE + 2; |
| //Cookie for flows that setup BGP paths |
| private final long BGP_COOKIE = APP_COOKIE + 3; |
| //Forwarding uses priority 0, and the mac rewrite entries in ingress switches |
| //need to be higher priority than this otherwise the rewrite may not get done |
| private final short SDNIP_PRIORITY = 10; |
| private final short ARP_PRIORITY = 20; |
| |
| private final short BGP_PORT = 179; |
| |
| private final int TOPO_DETECTION_WAIT = 2; //seconds |
| |
| //Configuration stuff |
| private List<String> switches; |
| private Map<String, Interface> interfaces; |
| private Map<InetAddress, BgpPeer> bgpPeers; |
| private SwitchPort bgpdAttachmentPoint; |
| private MACAddress bgpdMacAddress; |
| private short vlan; |
| |
| //True when all switches have connected |
| private volatile boolean switchesConnected = false; |
| //True when we have a full mesh of shortest paths between gateways |
| private volatile boolean topologyReady = false; |
| |
| private ArrayList<LDUpdate> linkUpdates; |
| private SingletonTask topologyChangeDetectorTask; |
| |
| private SetMultimap<InetAddress, RibUpdate> prefixesWaitingOnArp; |
| |
| private Map<InetAddress, Path> pathsWaitingOnArp; |
| |
| private ExecutorService bgpUpdatesExecutor; |
| |
| private Map<InetAddress, Path> pushedPaths; |
| private Map<Prefix, Path> prefixToPath; |
| private Multimap<Prefix, PushedFlowMod> pushedFlows; |
| |
| private FlowCache flowCache; |
| |
| private volatile Topology topology = null; |
| |
| private class TopologyChangeDetector implements Runnable { |
| @Override |
| public void run() { |
| log.debug("Running topology change detection task"); |
| synchronized (linkUpdates) { |
| //This is the model the REST API uses to retrieve network graph info |
| ITopoLinkService topoLinkService = new TopoLinkServiceImpl(); |
| |
| List<Link> activeLinks = topoLinkService.getActiveLinks(); |
| |
| Iterator<LDUpdate> it = linkUpdates.iterator(); |
| while (it.hasNext()){ |
| LDUpdate ldu = it.next(); |
| Link l = new Link(ldu.getSrc(), ldu.getSrcPort(), |
| ldu.getDst(), ldu.getDstPort()); |
| |
| if (activeLinks.contains(l)){ |
| it.remove(); |
| } |
| } |
| } |
| |
| if (!topologyReady) { |
| if (linkUpdates.isEmpty()){ |
| //All updates have been seen in network map. |
| //We can check if topology is ready |
| log.debug("No known changes outstanding. Checking topology now"); |
| checkStatus(); |
| } |
| else { |
| //We know of some link updates that haven't propagated to the database yet |
| log.debug("Some changes not found in network map - {} links missing", linkUpdates.size()); |
| topologyChangeDetectorTask.reschedule(TOPO_DETECTION_WAIT, TimeUnit.SECONDS); |
| } |
| } |
| } |
| } |
| |
| private void readConfiguration(String configFilename){ |
| File gatewaysFile = new File(configFilename); |
| ObjectMapper mapper = new ObjectMapper(); |
| |
| try { |
| Configuration config = mapper.readValue(gatewaysFile, Configuration.class); |
| |
| switches = config.getSwitches(); |
| interfaces = new HashMap<String, Interface>(); |
| for (Interface intf : config.getInterfaces()){ |
| interfaces.put(intf.getName(), intf); |
| } |
| bgpPeers = new HashMap<InetAddress, BgpPeer>(); |
| for (BgpPeer peer : config.getPeers()){ |
| bgpPeers.put(peer.getIpAddress(), peer); |
| } |
| |
| bgpdAttachmentPoint = new SwitchPort( |
| new Dpid(config.getBgpdAttachmentDpid()), |
| new Port(config.getBgpdAttachmentPort())); |
| |
| bgpdMacAddress = config.getBgpdMacAddress(); |
| vlan = config.getVlan(); |
| } catch (JsonParseException e) { |
| log.error("Error in JSON file", e); |
| System.exit(1); |
| } catch (JsonMappingException e) { |
| log.error("Error in JSON file", e); |
| System.exit(1); |
| } catch (IOException e) { |
| log.error("Error reading JSON file", e); |
| System.exit(1); |
| } |
| |
| //Populate the interface Patricia Trie |
| for (Interface intf : interfaces.values()) { |
| Prefix prefix = new Prefix(intf.getIpAddress().getAddress(), intf.getPrefixLength()); |
| interfacePtrie.put(prefix, intf); |
| } |
| } |
| |
| @Override |
| public Collection<Class<? extends IFloodlightService>> getModuleServices() { |
| Collection<Class<? extends IFloodlightService>> l |
| = new ArrayList<Class<? extends IFloodlightService>>(); |
| l.add(IBgpRouteService.class); |
| return l; |
| } |
| |
| @Override |
| public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() { |
| Map<Class<? extends IFloodlightService>, IFloodlightService> m |
| = new HashMap<Class<? extends IFloodlightService>, IFloodlightService>(); |
| m.put(IBgpRouteService.class, this); |
| m.put(IProxyArpService.class, this); |
| return m; |
| } |
| |
| @Override |
| public Collection<Class<? extends IFloodlightService>> getModuleDependencies() { |
| Collection<Class<? extends IFloodlightService>> l |
| = new ArrayList<Class<? extends IFloodlightService>>(); |
| l.add(IFloodlightProviderService.class); |
| l.add(ITopologyService.class); |
| l.add(IRestApiService.class); |
| return l; |
| } |
| |
| @Override |
| public void init(FloodlightModuleContext context) |
| throws FloodlightModuleException { |
| |
| ptree = new PatriciaTrie<RibEntry>(32); |
| interfacePtrie = new PatriciaTrie<Interface>(32); |
| |
| ribUpdates = new LinkedBlockingQueue<RibUpdate>(); |
| |
| // Register floodlight provider and REST handler. |
| floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class); |
| topologyService = context.getServiceImpl(ITopologyService.class); |
| linkDiscoveryService = context.getServiceImpl(ILinkDiscoveryService.class); |
| restApi = context.getServiceImpl(IRestApiService.class); |
| |
| //TODO We'll initialise this here for now, but it should really be done as |
| //part of the controller core |
| proxyArp = new ProxyArpManager(floodlightProvider, topologyService, this, restApi); |
| |
| linkUpdates = new ArrayList<LDUpdate>(); |
| ScheduledExecutorService executor = Executors.newScheduledThreadPool(1); |
| topologyChangeDetectorTask = new SingletonTask(executor, new TopologyChangeDetector()); |
| |
| topologyNetService = new TopologyManager(""); |
| |
| pathsWaitingOnArp = new HashMap<InetAddress, Path>(); |
| prefixesWaitingOnArp = Multimaps.synchronizedSetMultimap( |
| HashMultimap.<InetAddress, RibUpdate>create()); |
| |
| pushedPaths = new HashMap<InetAddress, Path>(); |
| prefixToPath = new HashMap<Prefix, Path>(); |
| pushedFlows = HashMultimap.<Prefix, PushedFlowMod>create(); |
| |
| flowCache = new FlowCache(floodlightProvider); |
| |
| bgpUpdatesExecutor = Executors.newSingleThreadExecutor( |
| new ThreadFactoryBuilder().setNameFormat("bgp-updates-%d").build()); |
| |
| //Read in config values |
| bgpdRestIp = context.getConfigParams(this).get("BgpdRestIp"); |
| if (bgpdRestIp == null){ |
| log.error("BgpdRestIp property not found in config file"); |
| System.exit(1); |
| } |
| else { |
| log.info("BgpdRestIp set to {}", bgpdRestIp); |
| } |
| |
| routerId = context.getConfigParams(this).get("RouterId"); |
| if (routerId == null){ |
| log.error("RouterId property not found in config file"); |
| System.exit(1); |
| } |
| else { |
| log.info("RouterId set to {}", routerId); |
| } |
| |
| String configFilenameParameter = context.getConfigParams(this).get("configfile"); |
| if (configFilenameParameter != null){ |
| configFilename = configFilenameParameter; |
| } |
| log.debug("Config file set to {}", configFilename); |
| |
| readConfiguration(configFilename); |
| } |
| |
| @Override |
| public void startUp(FloodlightModuleContext context) { |
| restApi.addRestletRoutable(new BgpRouteWebRoutable()); |
| topologyService.addListener(this); |
| floodlightProvider.addOFSwitchListener(this); |
| |
| proxyArp.startUp(vlan); |
| |
| floodlightProvider.addOFMessageListener(OFType.PACKET_IN, proxyArp); |
| |
| //Retrieve the RIB from BGPd during startup |
| retrieveRib(); |
| } |
| |
| public IPatriciaTrie<RibEntry> getPtree() { |
| return ptree; |
| } |
| |
| public void clearPtree() { |
| ptree = new PatriciaTrie<RibEntry>(32); |
| } |
| |
| public String getBGPdRestIp() { |
| return bgpdRestIp; |
| } |
| |
| public String getRouterId() { |
| return routerId; |
| } |
| |
| private void retrieveRib(){ |
| String url = "http://" + bgpdRestIp + "/wm/bgp/" + routerId; |
| String response = RestClient.get(url); |
| |
| if (response.equals("")){ |
| return; |
| } |
| |
| response = response.replaceAll("\"", "'"); |
| JSONObject jsonObj = (JSONObject) JSONSerializer.toJSON(response); |
| JSONArray rib_json_array = jsonObj.getJSONArray("rib"); |
| String router_id = jsonObj.getString("router-id"); |
| |
| int size = rib_json_array.size(); |
| |
| log.info("Retrived RIB of {} entries from BGPd", size); |
| |
| for (int j = 0; j < size; j++) { |
| JSONObject second_json_object = rib_json_array.getJSONObject(j); |
| String prefix = second_json_object.getString("prefix"); |
| String nexthop = second_json_object.getString("nexthop"); |
| |
| //insert each rib entry into the local rib; |
| String[] substring = prefix.split("/"); |
| String prefix1 = substring[0]; |
| String mask1 = substring[1]; |
| |
| Prefix p; |
| try { |
| p = new Prefix(prefix1, Integer.valueOf(mask1)); |
| } catch (NumberFormatException e) { |
| log.warn("Wrong mask format in RIB JSON: {}", mask1); |
| continue; |
| } catch (IllegalArgumentException e1) { |
| log.warn("Wrong prefix format in RIB JSON: {}", prefix1); |
| continue; |
| } |
| |
| RibEntry rib = new RibEntry(router_id, nexthop); |
| |
| try { |
| ribUpdates.put(new RibUpdate(Operation.UPDATE, p, rib)); |
| } catch (InterruptedException e) { |
| log.debug("Interrupted while pushing onto update queue"); |
| } |
| } |
| } |
| |
| @Override |
| public void newRibUpdate(RibUpdate update) { |
| try { |
| ribUpdates.put(update); |
| } catch (InterruptedException e) { |
| log.debug("Interrupted while putting on ribUpdates queue", e); |
| Thread.currentThread().interrupt(); |
| } |
| } |
| |
| public synchronized void processRibAdd(RibUpdate update) { |
| Prefix prefix = update.getPrefix(); |
| |
| log.debug("Processing prefix add {}", prefix); |
| |
| RibEntry rib = ptree.put(prefix, update.getRibEntry()); |
| |
| if (rib != null && !rib.equals(update.getRibEntry())) { |
| //There was an existing nexthop for this prefix. This update supersedes that, |
| //so we need to remove the old flows for this prefix from the switches |
| _processDeletePrefix(prefix, rib); |
| } |
| |
| if (update.getRibEntry().getNextHop().equals( |
| InetAddresses.forString("0.0.0.0"))) { |
| //Route originated by SDN domain |
| //We don't handle these at the moment |
| log.debug("Own route {} to {}", prefix, |
| update.getRibEntry().getNextHop().getHostAddress()); |
| return; |
| } |
| |
| _processRibAdd(update); |
| } |
| |
| private void _processRibAdd(RibUpdate update) { |
| Prefix prefix = update.getPrefix(); |
| RibEntry rib = update.getRibEntry(); |
| |
| InetAddress dstIpAddress = rib.getNextHop(); |
| |
| //See if we know the MAC address of the next hop |
| MACAddress nextHopMacAddress = proxyArp.getMacAddress(rib.getNextHop()); |
| |
| //Find the attachment point (egress interface) of the next hop |
| Interface egressInterface = null; |
| if (bgpPeers.containsKey(dstIpAddress)) { |
| //Route to a peer |
| log.debug("Route to peer {}", dstIpAddress); |
| BgpPeer peer = bgpPeers.get(dstIpAddress); |
| egressInterface = interfaces.get(peer.getInterfaceName()); |
| } |
| else { |
| //Route to non-peer |
| log.debug("Route to non-peer {}", dstIpAddress); |
| egressInterface = interfacePtrie.match( |
| new Prefix(dstIpAddress.getAddress(), 32)); |
| if (egressInterface == null) { |
| log.warn("No outgoing interface found for {}", dstIpAddress.getHostAddress()); |
| return; |
| } |
| } |
| |
| if (nextHopMacAddress == null) { |
| prefixesWaitingOnArp.put(dstIpAddress, |
| new RibUpdate(Operation.UPDATE, prefix, rib)); |
| proxyArp.sendArpRequest(dstIpAddress, this, true); |
| return; |
| } |
| else { |
| if (!bgpPeers.containsKey(dstIpAddress)) { |
| //If the prefix is for a non-peer we need to ensure there's a path, |
| //and push one if there isn't. |
| Path path = pushedPaths.get(dstIpAddress); |
| if (path == null) { |
| path = new Path(egressInterface, dstIpAddress); |
| calculateAndPushPath(path, nextHopMacAddress); |
| pushedPaths.put(dstIpAddress, path); |
| } |
| |
| path.incrementUsers(); |
| prefixToPath.put(prefix, path); |
| } |
| |
| //For all prefixes we need to add the first-hop mac-rewriting flows |
| addPrefixFlows(prefix, egressInterface, nextHopMacAddress); |
| } |
| } |
| |
| private void addPrefixFlows(Prefix prefix, Interface egressInterface, MACAddress nextHopMacAddress) { |
| log.debug("Adding flows for prefix {}, next hop mac {}", |
| prefix, nextHopMacAddress); |
| |
| //We only need one flow mod per switch, so pick one interface on each switch |
| Map<Long, Interface> srcInterfaces = new HashMap<Long, Interface>(); |
| for (Interface intf : interfaces.values()) { |
| if (!srcInterfaces.containsKey(intf.getDpid()) |
| && !intf.equals(egressInterface)) { |
| srcInterfaces.put(intf.getDpid(), intf); |
| } |
| } |
| |
| //Add a flow to rewrite mac for this prefix to all other border switches |
| for (Interface srcInterface : srcInterfaces.values()) { |
| DataPath shortestPath; |
| if (topology == null) { |
| shortestPath = topologyNetService.getDatabaseShortestPath( |
| srcInterface.getSwitchPort(), |
| egressInterface.getSwitchPort()); |
| } |
| else { |
| shortestPath = topologyNetService.getTopologyShortestPath( |
| topology, srcInterface.getSwitchPort(), |
| egressInterface.getSwitchPort()); |
| } |
| |
| if (shortestPath == null){ |
| log.debug("Shortest path between {} and {} not found", |
| srcInterface.getSwitchPort(), |
| egressInterface.getSwitchPort()); |
| return; // just quit here? |
| } |
| |
| //Set up the flow mod |
| OFFlowMod fm = (OFFlowMod) floodlightProvider.getOFMessageFactory() |
| .getMessage(OFType.FLOW_MOD); |
| |
| fm.setIdleTimeout((short)0) |
| .setHardTimeout((short)0) |
| .setBufferId(OFPacketOut.BUFFER_ID_NONE) |
| .setCookie(MAC_RW_COOKIE) |
| .setCommand(OFFlowMod.OFPFC_ADD) |
| .setPriority(SDNIP_PRIORITY) |
| .setLengthU(OFFlowMod.MINIMUM_LENGTH |
| + OFActionDataLayerDestination.MINIMUM_LENGTH |
| + OFActionOutput.MINIMUM_LENGTH); |
| |
| OFMatch match = new OFMatch(); |
| match.setDataLayerType(Ethernet.TYPE_IPv4); |
| match.setWildcards(match.getWildcards() & ~OFMatch.OFPFW_DL_TYPE); |
| |
| match.setFromCIDR(prefix.toString(), OFMatch.STR_NW_DST); |
| fm.setMatch(match); |
| |
| //Set up MAC rewrite action |
| OFActionDataLayerDestination macRewriteAction = new OFActionDataLayerDestination(); |
| macRewriteAction.setDataLayerAddress(nextHopMacAddress.toBytes()); |
| |
| //Set up output action |
| OFActionOutput outputAction = new OFActionOutput(); |
| outputAction.setMaxLength((short)0xffff); |
| Port outputPort = shortestPath.flowEntries().get(0).outPort(); |
| outputAction.setPort(outputPort.value()); |
| |
| List<OFAction> actions = new ArrayList<OFAction>(); |
| actions.add(macRewriteAction); |
| actions.add(outputAction); |
| fm.setActions(actions); |
| |
| pushedFlows.put(prefix, new PushedFlowMod(srcInterface.getDpid(), fm)); |
| flowCache.write(srcInterface.getDpid(), fm); |
| |
| /* |
| * XXX Rate limit hack! |
| * This should be solved properly by adding a rate limiting |
| * layer on top of the switches if we know they need it. |
| */ |
| try { |
| Thread.sleep(1); |
| } catch (InterruptedException e) { |
| // TODO handle this properly |
| log.error("Interrupted", e); |
| } |
| } |
| } |
| |
| public synchronized void processRibDelete(RibUpdate update) { |
| Prefix prefix = update.getPrefix(); |
| |
| if (ptree.remove(prefix, update.getRibEntry())) { |
| /* |
| * Only delete flows if an entry was actually removed from the trie. |
| * If no entry was removed, the <prefix, nexthop> wasn't there so |
| * it's probably already been removed and we don't need to do anything |
| */ |
| _processDeletePrefix(prefix, update.getRibEntry()); |
| } |
| } |
| |
| private void _processDeletePrefix(Prefix prefix, RibEntry ribEntry) { |
| deletePrefixFlows(prefix); |
| |
| log.debug("Deleting {} to {}", prefix, ribEntry.getNextHop()); |
| |
| if (!bgpPeers.containsKey(ribEntry.getNextHop())) { |
| log.debug("Getting path for route with non-peer nexthop"); |
| Path path = prefixToPath.remove(prefix); |
| |
| if (path != null) { |
| //path could be null if we added to the Ptree but didn't push |
| //flows yet because we were waiting to resolve ARP |
| |
| path.decrementUsers(); |
| if (path.getUsers() <= 0 && !path.isPermanent()) { |
| deletePath(path); |
| pushedPaths.remove(path.getDstIpAddress()); |
| } |
| } |
| } |
| } |
| |
| private void deletePrefixFlows(Prefix prefix) { |
| log.debug("Deleting flows for prefix {}", prefix); |
| |
| Collection<PushedFlowMod> pushedFlowMods |
| = pushedFlows.removeAll(prefix); |
| |
| for (PushedFlowMod pfm : pushedFlowMods) { |
| if (log.isTraceEnabled()) { |
| log.trace("Pushing a DELETE flow mod to {}, matches prefix {} with mac-rewrite {}", |
| new Object[] {HexString.toHexString(pfm.getDpid()), |
| pfm.getFlowMod().getMatch().getNetworkDestination() + |
| pfm.getFlowMod().getMatch().getNetworkDestinationMaskLen(), |
| HexString.toHexString(((OFActionDataLayerDestination)pfm.getFlowMod().getActions().get(0)) |
| .getDataLayerAddress())}); |
| } |
| |
| sendDeleteFlowMod(pfm.getFlowMod(), pfm.getDpid()); |
| } |
| } |
| |
| private void deletePath(Path path) { |
| log.debug("Deleting flows for path to {}", |
| path.getDstIpAddress().getHostAddress()); |
| |
| for (PushedFlowMod pfm : path.getFlowMods()) { |
| if (log.isTraceEnabled()) { |
| log.trace("Pushing a DELETE flow mod to {}, dst MAC {}", |
| new Object[] {HexString.toHexString(pfm.getDpid()), |
| HexString.toHexString(pfm.getFlowMod().getMatch().getDataLayerDestination()) |
| }); |
| } |
| |
| sendDeleteFlowMod(pfm.getFlowMod(), pfm.getDpid()); |
| } |
| } |
| |
| private void sendDeleteFlowMod(OFFlowMod addFlowMod, long dpid) { |
| flowCache.delete(dpid, addFlowMod); |
| } |
| |
| //TODO test next-hop changes |
| //TODO check delete/add synchronization |
| |
| /* |
| * On startup we need to calculate a full mesh of paths between all gateway |
| * switches |
| */ |
| private void setupFullMesh(){ |
| //For each border router, calculate and install a path from every other |
| //border switch to said border router. However, don't install the entry |
| //in to the first hop switch, as we need to install an entry to rewrite |
| //for each prefix received. This will be done later when prefixes have |
| //actually been received. |
| |
| for (BgpPeer peer : bgpPeers.values()) { |
| Interface peerInterface = interfaces.get(peer.getInterfaceName()); |
| |
| //We know there's not already a Path here pushed, because this is |
| //called before all other routing |
| Path path = new Path(peerInterface, peer.getIpAddress()); |
| path.setPermanent(); |
| |
| //See if we know the MAC address of the peer. If not we can't |
| //do anything until we learn it |
| MACAddress macAddress = proxyArp.getMacAddress(peer.getIpAddress()); |
| if (macAddress == null) { |
| log.debug("Don't know MAC for {}", peer.getIpAddress().getHostAddress()); |
| //Put in the pending paths list first |
| pathsWaitingOnArp.put(peer.getIpAddress(), path); |
| |
| proxyArp.sendArpRequest(peer.getIpAddress(), this, true); |
| continue; |
| } |
| |
| //If we know the MAC, lets go ahead and push the paths to this peer |
| calculateAndPushPath(path, macAddress); |
| } |
| } |
| |
| private void calculateAndPushPath(Path path, MACAddress dstMacAddress) { |
| Interface dstInterface = path.getDstInterface(); |
| |
| log.debug("Setting up path to {}, {}", path.getDstIpAddress().getHostAddress(), |
| dstMacAddress); |
| |
| List<PushedFlowMod> pushedFlows = new ArrayList<PushedFlowMod>(); |
| |
| for (Interface srcInterface : interfaces.values()) { |
| if (dstInterface.equals(srcInterface)){ |
| continue; |
| } |
| |
| DataPath shortestPath; |
| if (topology == null) { |
| shortestPath = topologyNetService.getDatabaseShortestPath( |
| srcInterface.getSwitchPort(), dstInterface.getSwitchPort()); |
| } |
| else { |
| shortestPath = topologyNetService.getTopologyShortestPath(topology, |
| srcInterface.getSwitchPort(), dstInterface.getSwitchPort()); |
| } |
| |
| if (shortestPath == null){ |
| log.warn("Shortest path between {} and {} not found", |
| srcInterface.getSwitchPort(), dstInterface.getSwitchPort()); |
| return; |
| } |
| |
| List<PushedFlowMod> pushedFlowMods = installPath(shortestPath.flowEntries(), dstMacAddress); |
| pushedFlows.addAll(pushedFlowMods); |
| } |
| |
| path.setFlowMods(pushedFlows); |
| } |
| |
| private List<PushedFlowMod> installPath(List<FlowEntry> flowEntries, MACAddress dstMacAddress){ |
| List<PushedFlowMod> flowMods = new ArrayList<PushedFlowMod>(); |
| |
| //Set up the flow mod |
| OFFlowMod fm = |
| (OFFlowMod) floodlightProvider.getOFMessageFactory() |
| .getMessage(OFType.FLOW_MOD); |
| |
| OFActionOutput action = new OFActionOutput(); |
| action.setMaxLength((short)0xffff); |
| List<OFAction> actions = new ArrayList<OFAction>(); |
| actions.add(action); |
| |
| fm.setIdleTimeout((short)0) |
| .setHardTimeout((short)0) |
| .setBufferId(OFPacketOut.BUFFER_ID_NONE) |
| .setCookie(L2_FWD_COOKIE) |
| .setCommand(OFFlowMod.OFPFC_ADD) |
| .setPriority(SDNIP_PRIORITY) |
| .setActions(actions) |
| .setLengthU(OFFlowMod.MINIMUM_LENGTH+OFActionOutput.MINIMUM_LENGTH); |
| |
| //Don't push the first flow entry. We need to push entries in the |
| //first switch based on IP prefix which we don't know yet. |
| for (int i = 1; i < flowEntries.size(); i++){ |
| FlowEntry flowEntry = flowEntries.get(i); |
| |
| OFMatch match = new OFMatch(); |
| match.setDataLayerDestination(dstMacAddress.toBytes()); |
| match.setWildcards(match.getWildcards() & ~OFMatch.OFPFW_DL_DST); |
| ((OFActionOutput) fm.getActions().get(0)).setPort(flowEntry.outPort().value()); |
| |
| fm.setMatch(match); |
| |
| flowMods.add(new PushedFlowMod(flowEntry.dpid().value(), fm)); |
| |
| flowCache.write(flowEntry.dpid().value(), fm); |
| |
| try { |
| fm = fm.clone(); |
| } catch (CloneNotSupportedException e1) { |
| log.error("Failure cloning flow mod", e1); |
| } |
| } |
| |
| return flowMods; |
| } |
| |
| private void setupBgpPaths(){ |
| for (BgpPeer bgpPeer : bgpPeers.values()){ |
| Interface peerInterface = interfaces.get(bgpPeer.getInterfaceName()); |
| |
| DataPath path = topologyNetService.getDatabaseShortestPath( |
| peerInterface.getSwitchPort(), bgpdAttachmentPoint); |
| |
| if (path == null){ |
| log.debug("Unable to compute path for BGP traffic for {}", |
| bgpPeer.getIpAddress()); |
| continue; |
| } |
| |
| //Set up the flow mod |
| OFFlowMod fm = |
| (OFFlowMod) floodlightProvider.getOFMessageFactory() |
| .getMessage(OFType.FLOW_MOD); |
| |
| OFActionOutput action = new OFActionOutput(); |
| action.setMaxLength((short)0xffff); |
| List<OFAction> actions = new ArrayList<OFAction>(); |
| actions.add(action); |
| |
| fm.setIdleTimeout((short)0) |
| .setHardTimeout((short)0) |
| .setBufferId(OFPacketOut.BUFFER_ID_NONE) |
| .setCookie(BGP_COOKIE) |
| .setCommand(OFFlowMod.OFPFC_ADD) |
| .setPriority(SDNIP_PRIORITY) |
| .setActions(actions) |
| .setLengthU(OFFlowMod.MINIMUM_LENGTH+OFActionOutput.MINIMUM_LENGTH); |
| |
| //Forward = gateway -> bgpd, reverse = bgpd -> gateway |
| OFMatch forwardMatchSrc = new OFMatch(); |
| |
| String interfaceCidrAddress = peerInterface.getIpAddress().getHostAddress() |
| + "/32"; |
| String peerCidrAddress = bgpPeer.getIpAddress().getHostAddress() |
| + "/32"; |
| |
| //Common match fields |
| forwardMatchSrc.setDataLayerType(Ethernet.TYPE_IPv4); |
| forwardMatchSrc.setNetworkProtocol(IPv4.PROTOCOL_TCP); |
| //forwardMatchSrc.setTransportDestination(BGP_PORT); |
| forwardMatchSrc.setWildcards(forwardMatchSrc.getWildcards() & ~OFMatch.OFPFW_IN_PORT |
| & ~OFMatch.OFPFW_DL_TYPE & ~OFMatch.OFPFW_NW_PROTO); |
| |
| |
| OFMatch reverseMatchSrc = forwardMatchSrc.clone(); |
| |
| forwardMatchSrc.setFromCIDR(peerCidrAddress, OFMatch.STR_NW_SRC); |
| forwardMatchSrc.setFromCIDR(interfaceCidrAddress, OFMatch.STR_NW_DST); |
| |
| OFMatch forwardMatchDst = forwardMatchSrc.clone(); |
| |
| forwardMatchSrc.setTransportSource(BGP_PORT); |
| forwardMatchSrc.setWildcards(forwardMatchSrc.getWildcards() & ~OFMatch.OFPFW_TP_SRC); |
| forwardMatchDst.setTransportDestination(BGP_PORT); |
| forwardMatchDst.setWildcards(forwardMatchDst.getWildcards() & ~OFMatch.OFPFW_TP_DST); |
| |
| reverseMatchSrc.setFromCIDR(interfaceCidrAddress, OFMatch.STR_NW_SRC); |
| reverseMatchSrc.setFromCIDR(peerCidrAddress, OFMatch.STR_NW_DST); |
| |
| OFMatch reverseMatchDst = reverseMatchSrc.clone(); |
| |
| reverseMatchSrc.setTransportSource(BGP_PORT); |
| reverseMatchSrc.setWildcards(forwardMatchSrc.getWildcards() & ~OFMatch.OFPFW_TP_SRC); |
| reverseMatchDst.setTransportDestination(BGP_PORT); |
| reverseMatchDst.setWildcards(forwardMatchDst.getWildcards() & ~OFMatch.OFPFW_TP_DST); |
| |
| fm.setMatch(forwardMatchSrc); |
| |
| OFMatch forwardIcmpMatch = new OFMatch(); |
| forwardIcmpMatch.setDataLayerType(Ethernet.TYPE_IPv4); |
| forwardIcmpMatch.setNetworkProtocol(IPv4.PROTOCOL_ICMP); |
| forwardIcmpMatch.setWildcards(forwardIcmpMatch.getWildcards() & |
| ~OFMatch.OFPFW_DL_TYPE & ~OFMatch.OFPFW_NW_PROTO); |
| |
| OFMatch reverseIcmpMatch = forwardIcmpMatch.clone(); |
| forwardIcmpMatch.setFromCIDR(interfaceCidrAddress, OFMatch.STR_NW_DST); |
| reverseIcmpMatch.setFromCIDR(interfaceCidrAddress, OFMatch.STR_NW_SRC); |
| |
| for (FlowEntry flowEntry : path.flowEntries()){ |
| OFFlowMod forwardFlowModSrc, forwardFlowModDst; |
| OFFlowMod reverseFlowModSrc, reverseFlowModDst; |
| OFFlowMod forwardIcmp, reverseIcmp; |
| try { |
| forwardFlowModSrc = fm.clone(); |
| forwardFlowModDst = fm.clone(); |
| reverseFlowModSrc = fm.clone(); |
| reverseFlowModDst = fm.clone(); |
| forwardIcmp = fm.clone(); |
| reverseIcmp = fm.clone(); |
| } catch (CloneNotSupportedException e) { |
| log.warn("Clone failed", e); |
| continue; |
| } |
| |
| forwardMatchSrc.setInputPort(flowEntry.inPort().value()); |
| forwardFlowModSrc.setMatch(forwardMatchSrc); |
| ((OFActionOutput)forwardFlowModSrc.getActions().get(0)) |
| .setPort(flowEntry.outPort().value()); |
| |
| forwardMatchDst.setInputPort(flowEntry.inPort().value()); |
| forwardFlowModDst.setMatch(forwardMatchDst); |
| ((OFActionOutput)forwardFlowModDst.getActions().get(0)) |
| .setPort(flowEntry.outPort().value()); |
| |
| reverseMatchSrc.setInputPort(flowEntry.outPort().value()); |
| reverseFlowModSrc.setMatch(reverseMatchSrc); |
| ((OFActionOutput)reverseFlowModSrc.getActions().get(0)) |
| .setPort(flowEntry.inPort().value()); |
| |
| reverseMatchDst.setInputPort(flowEntry.outPort().value()); |
| reverseFlowModDst.setMatch(reverseMatchDst); |
| ((OFActionOutput)reverseFlowModDst.getActions().get(0)) |
| .setPort(flowEntry.inPort().value()); |
| |
| ((OFActionOutput)forwardIcmp.getActions().get(0)) |
| .setPort(flowEntry.outPort().value()); |
| forwardIcmp.setMatch(forwardIcmpMatch); |
| |
| ((OFActionOutput)reverseIcmp.getActions().get(0)) |
| .setPort(flowEntry.inPort().value()); |
| reverseIcmp.setMatch(reverseIcmpMatch); |
| |
| List<OFFlowMod> flowModList = new ArrayList<OFFlowMod>(6); |
| flowModList.add(forwardFlowModSrc); |
| flowModList.add(forwardFlowModDst); |
| flowModList.add(reverseFlowModSrc); |
| flowModList.add(reverseFlowModDst); |
| flowModList.add(forwardIcmp); |
| flowModList.add(reverseIcmp); |
| flowCache.write(flowEntry.dpid().value(), flowModList); |
| } |
| } |
| } |
| |
| @Override |
| public void arpResponse(InetAddress ipAddress, MACAddress macAddress) { |
| log.debug("Received ARP response: {} => {}", |
| ipAddress.getHostAddress(), macAddress); |
| |
| /* |
| * We synchronize on this to prevent changes to the ptree while we're pushing |
| * flows to the switches. If the ptree changes, the ptree and switches |
| * could get out of sync. |
| */ |
| synchronized (this) { |
| Path path = pathsWaitingOnArp.remove(ipAddress); |
| |
| if (path != null) { |
| log.debug("Pushing path to {} at {} on {}", new Object[] { |
| path.getDstIpAddress().getHostAddress(), macAddress, |
| path.getDstInterface().getSwitchPort()}); |
| //These paths should always be to BGP peers. Paths to non-peers are |
| //handled once the first prefix is ready to push |
| if (pushedPaths.containsKey(path.getDstInterface())) { |
| //A path already got pushed to this endpoint while we were waiting |
| //for ARP. We'll copy over the permanent attribute if it is set on this path. |
| if (path.isPermanent()) { |
| pushedPaths.get(path.getDstInterface()).setPermanent(); |
| } |
| } |
| else { |
| calculateAndPushPath(path, macAddress); |
| pushedPaths.put(path.getDstIpAddress(), path); |
| } |
| } |
| |
| Set<RibUpdate> prefixesToPush = prefixesWaitingOnArp.removeAll(ipAddress); |
| |
| for (RibUpdate update : prefixesToPush) { |
| //These will always be adds |
| |
| RibEntry rib = ptree.lookup(update.getPrefix()); |
| if (rib != null && rib.equals(update.getRibEntry())) { |
| log.debug("Pushing prefix {} next hop {}", update.getPrefix(), |
| rib.getNextHop().getHostAddress()); |
| //We only push prefix flows if the prefix is still in the ptree |
| //and the next hop is the same as our update. The prefix could |
| //have been removed while we were waiting for the ARP, or the |
| //next hop could have changed. |
| _processRibAdd(update); |
| } else { |
| log.debug("Received ARP response, but {},{} is no longer in ptree", |
| update.getPrefix(), update.getRibEntry()); |
| } |
| } |
| } |
| } |
| |
| private void setupArpFlows() { |
| OFMatch match = new OFMatch(); |
| match.setDataLayerType(Ethernet.TYPE_ARP); |
| match.setWildcards(match.getWildcards() & ~OFMatch.OFPFW_DL_TYPE); |
| |
| OFFlowMod fm = new OFFlowMod(); |
| fm.setMatch(match); |
| |
| OFActionOutput action = new OFActionOutput(); |
| action.setPort(OFPort.OFPP_CONTROLLER.getValue()); |
| action.setMaxLength((short)0xffff); |
| List<OFAction> actions = new ArrayList<OFAction>(1); |
| actions.add(action); |
| fm.setActions(actions); |
| |
| fm.setIdleTimeout((short)0) |
| .setHardTimeout((short)0) |
| .setBufferId(OFPacketOut.BUFFER_ID_NONE) |
| .setCookie(0) |
| .setCommand(OFFlowMod.OFPFC_ADD) |
| .setPriority(ARP_PRIORITY) |
| .setLengthU(OFFlowMod.MINIMUM_LENGTH + OFActionOutput.MINIMUM_LENGTH); |
| |
| for (String strdpid : switches){ |
| flowCache.write(HexString.toLong(strdpid), fm); |
| } |
| } |
| |
| private void setupDefaultDropFlows() { |
| OFFlowMod fm = new OFFlowMod(); |
| fm.setMatch(new OFMatch()); |
| fm.setActions(new ArrayList<OFAction>()); //No action means drop |
| |
| fm.setIdleTimeout((short)0) |
| .setHardTimeout((short)0) |
| .setBufferId(OFPacketOut.BUFFER_ID_NONE) |
| .setCookie(0) |
| .setCommand(OFFlowMod.OFPFC_ADD) |
| .setPriority((short)0) |
| .setLengthU(OFFlowMod.MINIMUM_LENGTH); |
| |
| OFFlowMod fmLLDP; |
| OFFlowMod fmBDDP; |
| try { |
| fmLLDP = fm.clone(); |
| fmBDDP = fm.clone(); |
| } catch (CloneNotSupportedException e1) { |
| log.error("Error cloning flow mod", e1); |
| return; |
| } |
| |
| OFMatch matchLLDP = new OFMatch(); |
| matchLLDP.setDataLayerType((short)0x8942); |
| matchLLDP.setWildcards(matchLLDP.getWildcards() & ~ OFMatch.OFPFW_DL_TYPE); |
| fmLLDP.setMatch(matchLLDP); |
| |
| OFMatch matchBDDP = new OFMatch(); |
| matchBDDP.setDataLayerType((short)0x88cc); |
| matchBDDP.setWildcards(matchBDDP.getWildcards() & ~ OFMatch.OFPFW_DL_TYPE); |
| fmBDDP.setMatch(matchBDDP); |
| |
| OFActionOutput action = new OFActionOutput(); |
| action.setPort(OFPort.OFPP_CONTROLLER.getValue()); |
| action.setMaxLength((short)0xffff); |
| List<OFAction> actions = new ArrayList<OFAction>(1); |
| actions.add(action); |
| |
| fmLLDP.setActions(actions); |
| fmBDDP.setActions(actions); |
| |
| fmLLDP.setPriority(ARP_PRIORITY); |
| fmLLDP.setLengthU(OFFlowMod.MINIMUM_LENGTH + OFActionOutput.MINIMUM_LENGTH); |
| fmBDDP.setPriority(ARP_PRIORITY); |
| fmBDDP.setLengthU(OFFlowMod.MINIMUM_LENGTH + OFActionOutput.MINIMUM_LENGTH); |
| |
| List<OFFlowMod> flowModList = new ArrayList<OFFlowMod>(3); |
| flowModList.add(fm); |
| flowModList.add(fmLLDP); |
| flowModList.add(fmBDDP); |
| |
| for (String strdpid : switches){ |
| flowCache.write(HexString.toLong(strdpid), flowModList); |
| } |
| } |
| |
| private void beginRouting(){ |
| log.debug("Topology is now ready, beginning routing function"); |
| topology = topologyNetService.newDatabaseTopology(); |
| |
| setupArpFlows(); |
| setupDefaultDropFlows(); |
| |
| setupBgpPaths(); |
| setupFullMesh(); |
| |
| //Suppress link discovery on external-facing router ports |
| for (Interface intf : interfaces.values()) { |
| linkDiscoveryService.AddToSuppressLLDPs(intf.getDpid(), intf.getPort()); |
| } |
| |
| bgpUpdatesExecutor.execute(new Runnable() { |
| @Override |
| public void run() { |
| doUpdatesThread(); |
| } |
| }); |
| } |
| |
| private void checkSwitchesConnected(){ |
| for (String dpid : switches){ |
| if (floodlightProvider.getSwitches().get(HexString.toLong(dpid)) == null){ |
| log.debug("Not all switches are here yet"); |
| return; |
| } |
| } |
| switchesConnected = true; |
| } |
| |
| //Actually we only need to go half way round to verify full mesh connectivity |
| //(n^2)/2 |
| private void checkTopologyReady(){ |
| for (Interface dstInterface : interfaces.values()) { |
| for (Interface srcInterface : interfaces.values()) { |
| if (dstInterface.equals(srcInterface)) { |
| continue; |
| } |
| |
| DataPath shortestPath = topologyNetService.getDatabaseShortestPath( |
| srcInterface.getSwitchPort(), dstInterface.getSwitchPort()); |
| |
| if (shortestPath == null){ |
| log.debug("Shortest path between {} and {} not found", |
| srcInterface.getSwitchPort(), dstInterface.getSwitchPort()); |
| return; |
| } |
| } |
| } |
| topologyReady = true; |
| } |
| |
| private void checkStatus(){ |
| if (!switchesConnected){ |
| checkSwitchesConnected(); |
| } |
| boolean oldTopologyReadyStatus = topologyReady; |
| if (switchesConnected && !topologyReady){ |
| checkTopologyReady(); |
| } |
| if (!oldTopologyReadyStatus && topologyReady){ |
| beginRouting(); |
| } |
| } |
| |
| private void doUpdatesThread() { |
| boolean interrupted = false; |
| try { |
| while (true) { |
| try { |
| RibUpdate update = ribUpdates.take(); |
| switch (update.getOperation()){ |
| case UPDATE: |
| if (validateUpdate(update)) { |
| processRibAdd(update); |
| } |
| else { |
| log.debug("Rib UPDATE out of order: {} via {}", |
| update.getPrefix(), update.getRibEntry().getNextHop()); |
| } |
| break; |
| case DELETE: |
| if (validateUpdate(update)) { |
| processRibDelete(update); |
| } |
| else { |
| log.debug("Rib DELETE out of order: {} via {}", |
| update.getPrefix(), update.getRibEntry().getNextHop()); |
| } |
| break; |
| } |
| } catch (InterruptedException e) { |
| log.debug("Interrupted while taking from updates queue", e); |
| interrupted = true; |
| } catch (Exception e) { |
| log.debug("exception", e); |
| } |
| } |
| } finally { |
| if (interrupted) { |
| Thread.currentThread().interrupt(); |
| } |
| } |
| } |
| |
| private boolean validateUpdate(RibUpdate update) { |
| RibEntry newEntry = update.getRibEntry(); |
| RibEntry oldEntry = ptree.lookup(update.getPrefix()); |
| |
| //If there is no existing entry we must assume this is the most recent |
| //update. However this might not always be the case as we might have a |
| //POST then DELETE reordering. |
| //if (oldEntry == null || !newEntry.getNextHop().equals(oldEntry.getNextHop())) { |
| if (oldEntry == null) { |
| return true; |
| } |
| |
| // This handles the case where routes are gathered in the initial |
| // request because they don't have sequence number info |
| if (newEntry.getSysUpTime() == -1 && newEntry.getSequenceNum() == -1) { |
| return true; |
| } |
| |
| if (newEntry.getSysUpTime() > oldEntry.getSysUpTime()) { |
| return true; |
| } |
| else if (newEntry.getSysUpTime() == oldEntry.getSysUpTime()) { |
| if (newEntry.getSequenceNum() > oldEntry.getSequenceNum()) { |
| return true; |
| } |
| else { |
| return false; |
| } |
| } |
| else { |
| return false; |
| } |
| } |
| |
| @Override |
| public void topologyChanged() { |
| if (topologyReady) { |
| return; |
| } |
| |
| boolean refreshNeeded = false; |
| for (LDUpdate ldu : topologyService.getLastLinkUpdates()){ |
| if (!ldu.getOperation().equals(ILinkDiscovery.UpdateOperation.LINK_UPDATED)){ |
| //We don't need to recalculate anything for just link updates |
| //They happen very frequently |
| refreshNeeded = true; |
| } |
| |
| log.debug("Topo change {}", ldu.getOperation()); |
| |
| if (ldu.getOperation().equals(ILinkDiscovery.UpdateOperation.LINK_ADDED)){ |
| synchronized (linkUpdates) { |
| linkUpdates.add(ldu); |
| } |
| } |
| } |
| |
| if (refreshNeeded && !topologyReady){ |
| topologyChangeDetectorTask.reschedule(TOPO_DETECTION_WAIT, TimeUnit.SECONDS); |
| } |
| } |
| |
| @Override |
| public void addedSwitch(IOFSwitch sw) { |
| if (!topologyReady) { |
| sw.clearAllFlowMods(); |
| } |
| |
| flowCache.switchConnected(sw); |
| } |
| |
| @Override |
| public void removedSwitch(IOFSwitch sw) {} |
| |
| @Override |
| public void switchPortChanged(Long switchId) {} |
| |
| @Override |
| public String getName() { |
| return "BgpRoute"; |
| } |
| |
| /* |
| * ILayer3InfoService methods |
| */ |
| |
| @Override |
| public boolean isInterfaceAddress(InetAddress address) { |
| Interface intf = interfacePtrie.match(new Prefix(address.getAddress(), 32)); |
| return (intf != null && intf.getIpAddress().equals(address)); |
| } |
| |
| @Override |
| public boolean inConnectedNetwork(InetAddress address) { |
| Interface intf = interfacePtrie.match(new Prefix(address.getAddress(), 32)); |
| return (intf != null && !intf.getIpAddress().equals(address)); |
| } |
| |
| @Override |
| public boolean fromExternalNetwork(long inDpid, short inPort) { |
| for (Interface intf : interfaces.values()) { |
| if (intf.getDpid() == inDpid && intf.getPort() == inPort) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public Interface getOutgoingInterface(InetAddress dstIpAddress) { |
| return interfacePtrie.match(new Prefix(dstIpAddress.getAddress(), 32)); |
| } |
| |
| @Override |
| public boolean hasLayer3Configuration() { |
| return !interfaces.isEmpty(); |
| } |
| |
| @Override |
| public MACAddress getRouterMacAddress() { |
| return bgpdMacAddress; |
| } |
| |
| /* |
| * TODO This is a hack to get the REST API to work for ProxyArpManager. |
| * The REST API is currently tied to the Floodlight module system and we |
| * need to separate it to allow ONOS modules to use it. For now we will |
| * proxy calls through to the ProxyArpManager (which is not a Floodlight |
| * module) through this class which is a module. |
| */ |
| @Override |
| public MACAddress getMacAddress(InetAddress ipAddress) { |
| return proxyArp.getMacAddress(ipAddress); |
| } |
| |
| @Override |
| public void sendArpRequest(InetAddress ipAddress, IArpRequester requester, |
| boolean retry) { |
| proxyArp.sendArpRequest(ipAddress, requester, retry); |
| } |
| |
| @Override |
| public List<String> getMappings() { |
| return proxyArp.getMappings(); |
| } |
| } |