| /** |
| * Copyright 2011, Big Switch Networks, Inc. |
| * Originally created by David Erickson, Stanford University |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| * not use this file except in compliance with the License. You may obtain |
| * a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| **/ |
| |
| package net.onrc.onos.ofcontroller.linkdiscovery.internal; |
| |
| import java.io.IOException; |
| |
| import java.net.InetAddress; |
| import java.net.InetSocketAddress; |
| import java.net.NetworkInterface; |
| import java.net.SocketAddress; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.Set; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.locks.ReentrantReadWriteLock; |
| |
| import net.floodlightcontroller.core.FloodlightContext; |
| import net.floodlightcontroller.core.IFloodlightProviderService; |
| import net.floodlightcontroller.core.IFloodlightProviderService.Role; |
| import net.floodlightcontroller.core.IHAListener; |
| import net.floodlightcontroller.core.IInfoProvider; |
| import net.floodlightcontroller.core.IOFMessageListener; |
| import net.floodlightcontroller.core.IOFSwitch; |
| import net.floodlightcontroller.core.IOFSwitchListener; |
| import net.floodlightcontroller.core.annotations.LogMessageCategory; |
| import net.floodlightcontroller.core.annotations.LogMessageDoc; |
| import net.floodlightcontroller.core.annotations.LogMessageDocs; |
| import net.floodlightcontroller.core.internal.OFSwitchImpl; |
| 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.BSN; |
| import net.floodlightcontroller.packet.Ethernet; |
| import net.floodlightcontroller.packet.IPv4; |
| import net.floodlightcontroller.packet.LLDP; |
| import net.floodlightcontroller.packet.LLDPTLV; |
| import net.floodlightcontroller.restserver.IRestApiService; |
| import net.floodlightcontroller.routing.Link; |
| import net.floodlightcontroller.storage.IResultSet; |
| import net.floodlightcontroller.storage.IStorageSourceListener; |
| import net.floodlightcontroller.storage.IStorageSourceService; |
| import net.floodlightcontroller.storage.OperatorPredicate; |
| import net.floodlightcontroller.storage.StorageException; |
| import net.floodlightcontroller.threadpool.IThreadPoolService; |
| import net.floodlightcontroller.topology.NodePortTuple; |
| import net.floodlightcontroller.util.EventHistory; |
| import net.floodlightcontroller.util.EventHistory.EvAction; |
| import net.onrc.onos.ofcontroller.core.IOnosRemoteSwitch; |
| import net.onrc.onos.ofcontroller.linkdiscovery.ILinkDiscovery; |
| import net.onrc.onos.ofcontroller.linkdiscovery.ILinkDiscoveryListener; |
| import net.onrc.onos.ofcontroller.linkdiscovery.ILinkDiscoveryService; |
| import net.onrc.onos.ofcontroller.linkdiscovery.LinkInfo; |
| import net.onrc.onos.ofcontroller.linkdiscovery.ILinkDiscovery.LDUpdate; |
| import net.onrc.onos.ofcontroller.linkdiscovery.ILinkDiscovery.LinkType; |
| import net.onrc.onos.ofcontroller.linkdiscovery.ILinkDiscovery.SwitchType; |
| import net.onrc.onos.ofcontroller.linkdiscovery.ILinkDiscovery.UpdateOperation; |
| import net.onrc.onos.ofcontroller.linkdiscovery.web.LinkDiscoveryWebRoutable; |
| import net.onrc.onos.registry.controller.IControllerRegistryService; |
| |
| import org.openflow.protocol.OFMessage; |
| import org.openflow.protocol.OFPacketIn; |
| import org.openflow.protocol.OFPacketOut; |
| import org.openflow.protocol.OFPhysicalPort; |
| import org.openflow.protocol.OFPhysicalPort.OFPortConfig; |
| import org.openflow.protocol.OFPhysicalPort.OFPortState; |
| import org.openflow.protocol.OFPort; |
| import org.openflow.protocol.OFPortStatus; |
| import org.openflow.protocol.OFPortStatus.OFPortReason; |
| import org.openflow.protocol.OFType; |
| import org.openflow.protocol.action.OFAction; |
| import org.openflow.protocol.action.OFActionOutput; |
| import org.openflow.util.HexString; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * This class sends out LLDP messages containing the sending switch's datapath |
| * id as well as the outgoing port number. Received LLrescDP messages that |
| * match a known switch cause a new LinkTuple to be created according to the |
| * invariant rules listed below. This new LinkTuple is also passed to routing |
| * if it exists to trigger updates. |
| * |
| * This class also handles removing links that are associated to switch ports |
| * that go down, and switches that are disconnected. |
| * |
| * Invariants: |
| * -portLinks and switchLinks will not contain empty Sets outside of |
| * critical sections |
| * -portLinks contains LinkTuples where one of the src or dst |
| * SwitchPortTuple matches the map key |
| * -switchLinks contains LinkTuples where one of the src or dst |
| * SwitchPortTuple's id matches the switch id |
| * -Each LinkTuple will be indexed into switchLinks for both |
| * src.id and dst.id, and portLinks for each src and dst |
| * -The updates queue is only added to from within a held write lock |
| */ |
| @LogMessageCategory("Network Topology") |
| public class LinkDiscoveryManager |
| implements IOFMessageListener, IOFSwitchListener, |
| IStorageSourceListener, ILinkDiscoveryService, |
| IFloodlightModule, IInfoProvider, IHAListener { |
| protected IFloodlightProviderService controller; |
| protected final static Logger log = LoggerFactory.getLogger(LinkDiscoveryManager.class); |
| |
| // Names of table/fields for links in the storage API |
| private static final String LINK_TABLE_NAME = "controller_link"; |
| private static final String LINK_ID = "id"; |
| private static final String LINK_SRC_SWITCH = "src_switch_id"; |
| private static final String LINK_SRC_PORT = "src_port"; |
| private static final String LINK_SRC_PORT_STATE = "src_port_state"; |
| private static final String LINK_DST_SWITCH = "dst_switch_id"; |
| private static final String LINK_DST_PORT = "dst_port"; |
| private static final String LINK_DST_PORT_STATE = "dst_port_state"; |
| private static final String LINK_VALID_TIME = "valid_time"; |
| private static final String LINK_TYPE = "link_type"; |
| private static final String SWITCH_CONFIG_TABLE_NAME = "controller_switchconfig"; |
| private static final String SWITCH_CONFIG_CORE_SWITCH = "core_switch"; |
| |
| protected IFloodlightProviderService floodlightProvider; |
| protected IStorageSourceService storageSource; |
| protected IThreadPoolService threadPool; |
| protected IRestApiService restApi; |
| // Registry Service for ONOS |
| protected IControllerRegistryService registryService; |
| |
| |
| // LLDP and BDDP fields |
| private static final byte[] LLDP_STANDARD_DST_MAC_STRING = |
| HexString.fromHexString("01:80:c2:00:00:0e"); |
| private static final long LINK_LOCAL_MASK = 0xfffffffffff0L; |
| private static final long LINK_LOCAL_VALUE = 0x0180c2000000L; |
| |
| // BigSwitch OUI is 5C:16:C7, so 5D:16:C7 is the multicast version |
| // private static final String LLDP_BSN_DST_MAC_STRING = "5d:16:c7:00:00:01"; |
| private static final String LLDP_BSN_DST_MAC_STRING = "ff:ff:ff:ff:ff:ff"; |
| |
| |
| // Direction TLVs are used to indicate if the LLDPs were sent |
| // periodically or in response to a recieved LLDP |
| private static final byte TLV_DIRECTION_TYPE = 0x73; |
| private static final short TLV_DIRECTION_LENGTH = 1; // 1 byte |
| private static final byte TLV_DIRECTION_VALUE_FORWARD[] = {0x01}; |
| private static final byte TLV_DIRECTION_VALUE_REVERSE[] = {0x02}; |
| private static final LLDPTLV forwardTLV |
| = new LLDPTLV(). |
| setType((byte)TLV_DIRECTION_TYPE). |
| setLength((short)TLV_DIRECTION_LENGTH). |
| setValue(TLV_DIRECTION_VALUE_FORWARD); |
| |
| private static final LLDPTLV reverseTLV |
| = new LLDPTLV(). |
| setType((byte)TLV_DIRECTION_TYPE). |
| setLength((short)TLV_DIRECTION_LENGTH). |
| setValue(TLV_DIRECTION_VALUE_REVERSE); |
| |
| // Link discovery task details. |
| protected SingletonTask discoveryTask; |
| protected final int DISCOVERY_TASK_INTERVAL = 1; |
| protected final int LINK_TIMEOUT = 35; // original 35 secs, aggressive 5 secs |
| protected final int LLDP_TO_ALL_INTERVAL = 15 ; //original 15 seconds, aggressive 2 secs. |
| protected long lldpClock = 0; |
| // This value is intentionally kept higher than LLDP_TO_ALL_INTERVAL. |
| // If we want to identify link failures faster, we could decrease this |
| // value to a small number, say 1 or 2 sec. |
| protected final int LLDP_TO_KNOWN_INTERVAL= 20; // LLDP frequency for known links |
| |
| protected LLDPTLV controllerTLV; |
| protected ReentrantReadWriteLock lock; |
| int lldpTimeCount = 0; |
| |
| /** |
| * Flag to indicate if automatic port fast is enabled or not. |
| * Default is set to false -- Initialized in the init method as well. |
| */ |
| boolean autoPortFastFeature = false; |
| |
| /** |
| * Map of remote switches that are not connected to this controller. This |
| * is used to learn remote switches in a distributed controller ONOS. |
| */ |
| protected Map<Long, IOnosRemoteSwitch> remoteSwitches; |
| |
| /** |
| * Map from link to the most recent time it was verified functioning |
| */ |
| protected Map<Link, LinkInfo> links; |
| |
| /** |
| * Map from switch id to a set of all links with it as an endpoint |
| */ |
| protected Map<Long, Set<Link>> switchLinks; |
| |
| /** |
| * Map from a id:port to the set of links containing it as an endpoint |
| */ |
| protected Map<NodePortTuple, Set<Link>> portLinks; |
| |
| /** |
| * Set of link tuples over which multicast LLDPs are received |
| * and unicast LLDPs are not received. |
| */ |
| protected Map<NodePortTuple, Set<Link>> portBroadcastDomainLinks; |
| |
| protected volatile boolean shuttingDown = false; |
| |
| /* topology aware components are called in the order they were added to the |
| * the array */ |
| protected ArrayList<ILinkDiscoveryListener> linkDiscoveryAware; |
| |
| protected class LinkUpdate extends LDUpdate { |
| |
| public LinkUpdate(LDUpdate old) { |
| super(old); |
| } |
| @LogMessageDoc(level="ERROR", |
| message="Error in link discovery updates loop", |
| explanation="An unknown error occured while dispatching " + |
| "link update notifications", |
| recommendation=LogMessageDoc.GENERIC_ACTION) |
| @Override |
| public void dispatch() { |
| if (linkDiscoveryAware != null) { |
| if (log.isTraceEnabled()) { |
| log.trace("Dispatching link discovery update {} {} {} {} {} for {}", |
| new Object[]{this.getOperation(), |
| HexString.toHexString(this.getSrc()), this.getSrcPort(), |
| HexString.toHexString(this.getDst()), this.getDstPort(), |
| linkDiscoveryAware}); |
| } |
| try { |
| for (ILinkDiscoveryListener lda : linkDiscoveryAware) { // order maintained |
| lda.linkDiscoveryUpdate(this); |
| } |
| } |
| catch (Exception e) { |
| log.error("Error in link discovery updates loop", e); |
| } |
| } |
| |
| } |
| |
| } |
| |
| /** |
| * List of ports through which LLDP/BDDPs are not sent. |
| */ |
| protected Set<NodePortTuple> suppressLinkDiscovery; |
| |
| /** A list of ports that are quarantined for discovering links through |
| * them. Data traffic from these ports are not allowed until the ports |
| * are released from quarantine. |
| */ |
| protected LinkedBlockingQueue<NodePortTuple> quarantineQueue; |
| protected LinkedBlockingQueue<NodePortTuple> maintenanceQueue; |
| /** |
| * Quarantine task |
| */ |
| protected SingletonTask bddpTask; |
| protected final int BDDP_TASK_INTERVAL = 100; // 100 ms. |
| protected final int BDDP_TASK_SIZE = 5; // # of ports per iteration |
| |
| /** |
| * Map of broadcast domain ports and the last time a BDDP was either |
| * sent or received on that port. |
| */ |
| protected Map<NodePortTuple, Long> broadcastDomainPortTimeMap; |
| |
| /** |
| * Get the LLDP sending period in seconds. |
| * @return LLDP sending period in seconds. |
| */ |
| public int getLldpFrequency() { |
| return LLDP_TO_KNOWN_INTERVAL; |
| } |
| |
| /** |
| * Get the LLDP timeout value in seconds |
| * @return LLDP timeout value in seconds |
| */ |
| public int getLldpTimeout() { |
| return LINK_TIMEOUT; |
| } |
| |
| public Map<NodePortTuple, Set<Link>> getPortLinks() { |
| return portLinks; |
| } |
| |
| public Set<NodePortTuple> getSuppressLLDPsInfo() { |
| return suppressLinkDiscovery; |
| } |
| |
| /** |
| * Add a switch port to the suppressed LLDP list. |
| * Remove any known links on the switch port. |
| */ |
| public void AddToSuppressLLDPs(long sw, short port) |
| { |
| NodePortTuple npt = new NodePortTuple(sw, port); |
| this.suppressLinkDiscovery.add(npt); |
| deleteLinksOnPort(npt, "LLDP suppressed."); |
| } |
| |
| /** |
| * Remove a switch port from the suppressed LLDP list. |
| * Discover links on that switchport. |
| */ |
| public void RemoveFromSuppressLLDPs(long sw, short port) |
| { |
| NodePortTuple npt = new NodePortTuple(sw, port); |
| this.suppressLinkDiscovery.remove(npt); |
| discover(npt); |
| } |
| |
| public boolean isShuttingDown() { |
| return shuttingDown; |
| } |
| |
| public boolean isFastPort(long sw, short port) { |
| return false; |
| } |
| |
| public ILinkDiscovery.LinkType getLinkType(Link lt, LinkInfo info) { |
| if (info.getUnicastValidTime() != null) { |
| return ILinkDiscovery.LinkType.DIRECT_LINK; |
| } else if (info.getMulticastValidTime() != null) { |
| return ILinkDiscovery.LinkType.MULTIHOP_LINK; |
| } |
| return ILinkDiscovery.LinkType.INVALID_LINK; |
| } |
| |
| |
| private boolean isLinkDiscoverySuppressed(long sw, short portNumber) { |
| return this.suppressLinkDiscovery.contains(new NodePortTuple(sw, portNumber)); |
| } |
| |
| protected void discoverLinks() { |
| |
| // timeout known links. |
| timeoutLinks(); |
| |
| //increment LLDP clock |
| lldpClock = (lldpClock + 1)% LLDP_TO_ALL_INTERVAL; |
| |
| if (lldpClock == 0) { |
| log.debug("Sending LLDP out on all ports."); |
| discoverOnAllPorts(); |
| } |
| } |
| |
| |
| /** |
| * Quarantine Ports. |
| */ |
| protected class QuarantineWorker implements Runnable { |
| @Override |
| public void run() { |
| try { |
| processBDDPLists(); |
| } |
| catch (Exception e) { |
| log.error("Error in quarantine worker thread", e); |
| } finally { |
| bddpTask.reschedule(BDDP_TASK_INTERVAL, |
| TimeUnit.MILLISECONDS); |
| } |
| } |
| } |
| |
| /** |
| * Add a switch port to the quarantine queue. Schedule the |
| * quarantine task if the quarantine queue was empty before adding |
| * this switch port. |
| * @param npt |
| */ |
| protected void addToQuarantineQueue(NodePortTuple npt) { |
| if (quarantineQueue.contains(npt) == false) |
| quarantineQueue.add(npt); |
| } |
| |
| /** |
| * Remove a switch port from the quarantine queue. |
| */ |
| protected void removeFromQuarantineQueue(NodePortTuple npt) { |
| // Remove all occurrences of the node port tuple from the list. |
| while (quarantineQueue.remove(npt)); |
| } |
| |
| /** |
| * Add a switch port to maintenance queue. |
| * @param npt |
| */ |
| protected void addToMaintenanceQueue(NodePortTuple npt) { |
| // TODO We are not checking if the switch port tuple is already |
| // in the maintenance list or not. This will be an issue for |
| // really large number of switch ports in the network. |
| if (maintenanceQueue.contains(npt) == false) |
| maintenanceQueue.add(npt); |
| } |
| |
| /** |
| * Remove a switch port from maintenance queue. |
| * @param npt |
| */ |
| protected void removeFromMaintenanceQueue(NodePortTuple npt) { |
| // Remove all occurrences of the node port tuple from the queue. |
| while (maintenanceQueue.remove(npt)); |
| } |
| |
| /** |
| * This method processes the quarantine list in bursts. The task is |
| * at most once per BDDP_TASK_INTERVAL. |
| * One each call, BDDP_TASK_SIZE number of switch ports are processed. |
| * Once the BDDP packets are sent out through the switch ports, the ports |
| * are removed from the quarantine list. |
| */ |
| |
| protected void processBDDPLists() { |
| int count = 0; |
| Set<NodePortTuple> nptList = new HashSet<NodePortTuple>(); |
| |
| while(count < BDDP_TASK_SIZE && quarantineQueue.peek() !=null) { |
| NodePortTuple npt; |
| npt = quarantineQueue.remove(); |
| sendDiscoveryMessage(npt.getNodeId(), npt.getPortId(), false, false); |
| nptList.add(npt); |
| count++; |
| } |
| |
| count = 0; |
| while (count < BDDP_TASK_SIZE && maintenanceQueue.peek() != null) { |
| NodePortTuple npt; |
| npt = maintenanceQueue.remove(); |
| sendDiscoveryMessage(npt.getNodeId(), npt.getPortId(), false, false); |
| count++; |
| } |
| |
| for(NodePortTuple npt:nptList) { |
| generateSwitchPortStatusUpdate(npt.getNodeId(), npt.getPortId()); |
| } |
| } |
| |
| public Set<Short> getQuarantinedPorts(long sw) { |
| Set<Short> qPorts = new HashSet<Short>(); |
| |
| Iterator<NodePortTuple> iter = quarantineQueue.iterator(); |
| while (iter.hasNext()) { |
| NodePortTuple npt = iter.next(); |
| if (npt.getNodeId() == sw) { |
| qPorts.add(npt.getPortId()); |
| } |
| } |
| return qPorts; |
| } |
| |
| private void generateSwitchPortStatusUpdate(long sw, short port) { |
| UpdateOperation operation; |
| |
| IOFSwitch iofSwitch = floodlightProvider.getSwitches().get(sw); |
| if (iofSwitch == null) return; |
| |
| OFPhysicalPort ofp = iofSwitch.getPort(port); |
| if (ofp == null) return; |
| |
| int srcPortState = ofp.getState(); |
| boolean portUp = ((srcPortState & |
| OFPortState.OFPPS_STP_MASK.getValue()) != |
| OFPortState.OFPPS_STP_BLOCK.getValue()); |
| |
| if (portUp) operation = UpdateOperation.PORT_UP; |
| else operation = UpdateOperation.PORT_DOWN; |
| |
| LinkUpdate update = new LinkUpdate(new LDUpdate(sw, port, operation)); |
| |
| |
| controller.publishUpdate(update); |
| } |
| |
| /** |
| * Send LLDP on known ports |
| */ |
| protected void discoverOnKnownLinkPorts() { |
| // Copy the port set. |
| Set<NodePortTuple> nptSet = new HashSet<NodePortTuple>(); |
| nptSet.addAll(portLinks.keySet()); |
| |
| // Send LLDP from each of them. |
| for(NodePortTuple npt: nptSet) { |
| discover(npt); |
| } |
| } |
| |
| protected void discover(NodePortTuple npt) { |
| discover(npt.getNodeId(), npt.getPortId()); |
| } |
| |
| protected void discover(long sw, short port) { |
| sendDiscoveryMessage(sw, port, true, false); |
| } |
| |
| /** |
| * Learn remote switches when running as a distributed controller ONOS |
| */ |
| protected IOFSwitch addRemoteSwitch(long sw, short port) { |
| IOnosRemoteSwitch remotesw = null; |
| |
| // add a switch if we have not seen it before |
| remotesw = remoteSwitches.get(sw); |
| |
| if (remotesw == null) { |
| remotesw = new OFSwitchImpl(); |
| remotesw.setupRemoteSwitch(sw); |
| remoteSwitches.put(remotesw.getId(), remotesw); |
| log.debug("addRemoteSwitch(): added fake remote sw {}", remotesw); |
| } |
| |
| // add the port if we have not seen it before |
| if (remotesw.getPort(port) == null) { |
| OFPhysicalPort remoteport = new OFPhysicalPort(); |
| remoteport.setPortNumber(port); |
| remoteport.setName("fake_" + port); |
| remoteport.setConfig(0); |
| remoteport.setState(0); |
| remotesw.setPort(remoteport); |
| log.debug("addRemoteSwitch(): added fake remote port {} to sw {}", remoteport, remotesw.getId()); |
| } |
| |
| return remotesw; |
| } |
| |
| /** |
| * Send link discovery message out of a given switch port. |
| * The discovery message may be a standard LLDP or a modified |
| * LLDP, where the dst mac address is set to :ff. |
| * |
| * TODO: The modified LLDP will updated in the future and may |
| * use a different eth-type. |
| * @param sw |
| * @param port |
| * @param isStandard indicates standard or modified LLDP |
| * @param isReverse indicates whether the LLDP was sent as a response |
| */ |
| @LogMessageDoc(level="ERROR", |
| message="Failure sending LLDP out port {port} on switch {switch}", |
| explanation="An I/O error occured while sending LLDP message " + |
| "to the switch.", |
| recommendation=LogMessageDoc.CHECK_SWITCH) |
| protected void sendDiscoveryMessage(long sw, short port, |
| boolean isStandard, |
| boolean isReverse) { |
| |
| IOFSwitch iofSwitch = floodlightProvider.getSwitches().get(sw); |
| if (iofSwitch == null) { |
| return; |
| } |
| |
| if (port == OFPort.OFPP_LOCAL.getValue()) |
| return; |
| |
| OFPhysicalPort ofpPort = iofSwitch.getPort(port); |
| |
| if (ofpPort == null) { |
| if (log.isTraceEnabled()) { |
| log.trace("Null physical port. sw={}, port={}", sw, port); |
| } |
| return; |
| } |
| |
| if (isLinkDiscoverySuppressed(sw, port)) { |
| /* Dont send LLDPs out of this port as suppressLLDPs set |
| * |
| */ |
| return; |
| } |
| |
| // For fast ports, do not send forward LLDPs or BDDPs. |
| if (!isReverse && autoPortFastFeature && isFastPort(sw, port)) |
| return; |
| |
| if (log.isTraceEnabled()) { |
| log.trace("Sending LLDP packet out of swich: {}, port: {}", |
| sw, port); |
| } |
| |
| // using "nearest customer bridge" MAC address for broadest possible propagation |
| // through provider and TPMR bridges (see IEEE 802.1AB-2009 and 802.1Q-2011), |
| // in particular the Linux bridge which behaves mostly like a provider bridge |
| byte[] chassisId = new byte[] {4, 0, 0, 0, 0, 0, 0}; // filled in later |
| byte[] portId = new byte[] {2, 0, 0}; // filled in later |
| byte[] ttlValue = new byte[] {0, 0x78}; |
| // OpenFlow OUI - 00-26-E1 |
| byte[] dpidTLVValue = new byte[] {0x0, 0x26, (byte) 0xe1, 0, 0, 0, 0, 0, 0, 0, 0, 0}; |
| LLDPTLV dpidTLV = new LLDPTLV().setType((byte) 127).setLength((short) dpidTLVValue.length).setValue(dpidTLVValue); |
| |
| byte[] dpidArray = new byte[8]; |
| ByteBuffer dpidBB = ByteBuffer.wrap(dpidArray); |
| ByteBuffer portBB = ByteBuffer.wrap(portId, 1, 2); |
| |
| Long dpid = sw; |
| dpidBB.putLong(dpid); |
| // set the ethernet source mac to last 6 bytes of dpid |
| System.arraycopy(dpidArray, 2, ofpPort.getHardwareAddress(), 0, 6); |
| // set the chassis id's value to last 6 bytes of dpid |
| System.arraycopy(dpidArray, 2, chassisId, 1, 6); |
| // set the optional tlv to the full dpid |
| System.arraycopy(dpidArray, 0, dpidTLVValue, 4, 8); |
| |
| |
| // set the portId to the outgoing port |
| portBB.putShort(port); |
| if (log.isTraceEnabled()) { |
| log.trace("Sending LLDP out of interface: {}/{}", |
| HexString.toHexString(sw), port); |
| } |
| |
| LLDP lldp = new LLDP(); |
| lldp.setChassisId(new LLDPTLV().setType((byte) 1).setLength((short) chassisId.length).setValue(chassisId)); |
| lldp.setPortId(new LLDPTLV().setType((byte) 2).setLength((short) portId.length).setValue(portId)); |
| lldp.setTtl(new LLDPTLV().setType((byte) 3).setLength((short) ttlValue.length).setValue(ttlValue)); |
| lldp.getOptionalTLVList().add(dpidTLV); |
| |
| // Add the controller identifier to the TLV value. |
| lldp.getOptionalTLVList().add(controllerTLV); |
| if (isReverse) { |
| lldp.getOptionalTLVList().add(reverseTLV); |
| }else { |
| lldp.getOptionalTLVList().add(forwardTLV); |
| } |
| |
| Ethernet ethernet; |
| if (isStandard) { |
| ethernet = new Ethernet() |
| .setSourceMACAddress(ofpPort.getHardwareAddress()) |
| .setDestinationMACAddress(LLDP_STANDARD_DST_MAC_STRING) |
| .setEtherType(Ethernet.TYPE_LLDP); |
| ethernet.setPayload(lldp); |
| } else { |
| BSN bsn = new BSN(BSN.BSN_TYPE_BDDP); |
| bsn.setPayload(lldp); |
| |
| ethernet = new Ethernet() |
| .setSourceMACAddress(ofpPort.getHardwareAddress()) |
| .setDestinationMACAddress(LLDP_BSN_DST_MAC_STRING) |
| .setEtherType(Ethernet.TYPE_BSN); |
| ethernet.setPayload(bsn); |
| } |
| |
| |
| // serialize and wrap in a packet out |
| byte[] data = ethernet.serialize(); |
| OFPacketOut po = (OFPacketOut) floodlightProvider.getOFMessageFactory().getMessage(OFType.PACKET_OUT); |
| po.setBufferId(OFPacketOut.BUFFER_ID_NONE); |
| po.setInPort(OFPort.OFPP_NONE); |
| |
| // set actions |
| List<OFAction> actions = new ArrayList<OFAction>(); |
| actions.add(new OFActionOutput(port, (short) 0)); |
| po.setActions(actions); |
| po.setActionsLength((short) OFActionOutput.MINIMUM_LENGTH); |
| |
| // set data |
| po.setLengthU(OFPacketOut.MINIMUM_LENGTH + po.getActionsLength() + data.length); |
| po.setPacketData(data); |
| |
| // send |
| try { |
| iofSwitch.write(po, null); |
| iofSwitch.flush(); |
| } catch (IOException e) { |
| log.error("Failure sending LLDP out port {} on switch {}", |
| new Object[]{ port, iofSwitch.getStringId() }, e); |
| } |
| |
| } |
| |
| /** |
| * Send LLDPs to all switch-ports |
| */ |
| protected void discoverOnAllPorts() { |
| if (log.isTraceEnabled()) { |
| log.trace("Sending LLDP packets out of all the enabled ports on switch {}"); |
| } |
| Set<Long> switches = floodlightProvider.getSwitches().keySet(); |
| // Send standard LLDPs |
| for (long sw: switches) { |
| IOFSwitch iofSwitch = floodlightProvider.getSwitches().get(sw); |
| if (iofSwitch == null) continue; |
| if (iofSwitch.getEnabledPorts() != null) { |
| for (OFPhysicalPort ofp: iofSwitch.getEnabledPorts()) { |
| if (isLinkDiscoverySuppressed(sw, ofp.getPortNumber())) |
| continue; |
| if (autoPortFastFeature && isFastPort(sw, ofp.getPortNumber())) |
| continue; |
| |
| // sends forward LLDP only non-fastports. |
| sendDiscoveryMessage(sw, ofp.getPortNumber(), true, false); |
| |
| // If the switch port is not alreayd in the maintenance |
| // queue, add it. |
| NodePortTuple npt = new NodePortTuple(sw, ofp.getPortNumber()); |
| addToMaintenanceQueue(npt); |
| } |
| } |
| } |
| } |
| |
| protected void setControllerTLV() { |
| //Setting the controllerTLVValue based on current nano time, |
| //controller's IP address, and the network interface object hash |
| //the corresponding IP address. |
| |
| final int prime = 7867; |
| InetAddress localIPAddress = null; |
| NetworkInterface localInterface = null; |
| |
| byte[] controllerTLVValue = new byte[] {0, 0, 0, 0, 0, 0, 0, 0}; // 8 byte value. |
| ByteBuffer bb = ByteBuffer.allocate(10); |
| |
| try{ |
| localIPAddress = java.net.InetAddress.getLocalHost(); |
| localInterface = NetworkInterface.getByInetAddress(localIPAddress); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| |
| long result = System.nanoTime(); |
| if (localIPAddress != null) |
| result = result * prime + IPv4.toIPv4Address(localIPAddress.getHostAddress()); |
| if (localInterface != null) |
| result = result * prime + localInterface.hashCode(); |
| // set the first 4 bits to 0. |
| result = result & (0x0fffffffffffffffL); |
| |
| bb.putLong(result); |
| |
| bb.rewind(); |
| bb.get(controllerTLVValue, 0, 8); |
| |
| this.controllerTLV = new LLDPTLV().setType((byte) 0x0c).setLength((short) controllerTLVValue.length).setValue(controllerTLVValue); |
| } |
| |
| @Override |
| public String getName() { |
| return "linkdiscovery"; |
| } |
| |
| @Override |
| public Command receive(IOFSwitch sw, OFMessage msg, FloodlightContext cntx) { |
| switch (msg.getType()) { |
| case PACKET_IN: |
| return this.handlePacketIn(sw.getId(), (OFPacketIn) msg, cntx); |
| case PORT_STATUS: |
| return this.handlePortStatus(sw.getId(), (OFPortStatus) msg); |
| default: |
| break; |
| } |
| return Command.CONTINUE; |
| } |
| |
| private Command handleLldp(LLDP lldp, long sw, OFPacketIn pi, boolean isStandard, FloodlightContext cntx) { |
| // If LLDP is suppressed on this port, ignore received packet as well |
| IOFSwitch iofSwitch = floodlightProvider.getSwitches().get(sw); |
| if (iofSwitch == null) { |
| return Command.STOP; |
| } |
| |
| if (isLinkDiscoverySuppressed(sw, pi.getInPort())) |
| return Command.STOP; |
| |
| // If this is a malformed LLDP, or not from us, exit |
| if (lldp.getPortId() == null || lldp.getPortId().getLength() != 3) |
| return Command.CONTINUE; |
| |
| long myId = ByteBuffer.wrap(controllerTLV.getValue()).getLong(); |
| long otherId = 0; |
| boolean myLLDP = false; |
| Boolean isReverse = null; |
| |
| ByteBuffer portBB = ByteBuffer.wrap(lldp.getPortId().getValue()); |
| portBB.position(1); |
| |
| Short remotePort = portBB.getShort(); |
| IOFSwitch remoteSwitch = null; |
| |
| // Verify this LLDP packet matches what we're looking for |
| for (LLDPTLV lldptlv : lldp.getOptionalTLVList()) { |
| if (lldptlv.getType() == 127 && lldptlv.getLength() == 12 && |
| lldptlv.getValue()[0] == 0x0 && lldptlv.getValue()[1] == 0x26 && |
| lldptlv.getValue()[2] == (byte)0xe1 && lldptlv.getValue()[3] == 0x0) { |
| ByteBuffer dpidBB = ByteBuffer.wrap(lldptlv.getValue()); |
| remoteSwitch = floodlightProvider.getSwitches().get(dpidBB.getLong(4)); |
| if (remoteSwitch == null) { |
| // Added by ONOS |
| // floodlight LLDP coming from a remote switch connected to a different controller |
| // add it to our cache of unconnected remote switches |
| remoteSwitch = addRemoteSwitch(dpidBB.getLong(4), remotePort); |
| } |
| } else if (lldptlv.getType() == 12 && lldptlv.getLength() == 8){ |
| otherId = ByteBuffer.wrap(lldptlv.getValue()).getLong(); |
| if (myId == otherId) |
| myLLDP = true; |
| } else if (lldptlv.getType() == TLV_DIRECTION_TYPE && |
| lldptlv.getLength() == TLV_DIRECTION_LENGTH) { |
| if (lldptlv.getValue()[0] == TLV_DIRECTION_VALUE_FORWARD[0]) |
| isReverse = false; |
| else if (lldptlv.getValue()[0] == TLV_DIRECTION_VALUE_REVERSE[0]) |
| isReverse = true; |
| } |
| } |
| |
| if (myLLDP == false) { |
| // This is not the LLDP sent by this controller. |
| // If the LLDP message has multicast bit set, then we need to broadcast |
| // the packet as a regular packet. |
| if (isStandard) { |
| if (log.isTraceEnabled()) { |
| log.trace("Getting standard LLDP from a different controller and quelching it."); |
| } |
| return Command.STOP; |
| } |
| else if (myId < otherId) { |
| if (log.isTraceEnabled()) { |
| log.trace("Getting BDDP packets from a different controller" + |
| "and letting it go through normal processing chain."); |
| } |
| //XXX ONOS: Fix the BDDP broadcast issue |
| //return Command.CONTINUE; |
| return Command.STOP; |
| } |
| } |
| |
| |
| if (remoteSwitch == null) { |
| // Ignore LLDPs not generated by Floodlight, or from a switch that has recently |
| // disconnected, or from a switch connected to another Floodlight instance |
| if (log.isTraceEnabled()) { |
| log.trace("Received LLDP from remote switch not connected to the controller"); |
| } |
| return Command.STOP; |
| } |
| |
| if (!remoteSwitch.portEnabled(remotePort)) { |
| if (log.isTraceEnabled()) { |
| log.trace("Ignoring link with disabled source port: switch {} port {}", remoteSwitch, remotePort); |
| } |
| return Command.STOP; |
| } |
| if (suppressLinkDiscovery.contains(new NodePortTuple(remoteSwitch.getId(), |
| remotePort))) { |
| if (log.isTraceEnabled()) { |
| log.trace("Ignoring link with suppressed src port: switch {} port {}", |
| remoteSwitch, remotePort); |
| } |
| return Command.STOP; |
| } |
| if (!iofSwitch.portEnabled(pi.getInPort())) { |
| if (log.isTraceEnabled()) { |
| log.trace("Ignoring link with disabled dest port: switch {} port {}", sw, pi.getInPort()); |
| } |
| return Command.STOP; |
| } |
| |
| OFPhysicalPort physicalPort = remoteSwitch.getPort(remotePort); |
| int srcPortState = (physicalPort != null) ? physicalPort.getState() : 0; |
| physicalPort = iofSwitch.getPort(pi.getInPort()); |
| int dstPortState = (physicalPort != null) ? physicalPort.getState() : 0; |
| |
| // Store the time of update to this link, and push it out to routingEngine |
| Link lt = new Link(remoteSwitch.getId(), remotePort, iofSwitch.getId(), pi.getInPort()); |
| |
| |
| Long lastLldpTime = null; |
| Long lastBddpTime = null; |
| |
| Long firstSeenTime = System.currentTimeMillis(); |
| |
| if (isStandard) |
| lastLldpTime = System.currentTimeMillis(); |
| else |
| lastBddpTime = System.currentTimeMillis(); |
| |
| LinkInfo newLinkInfo = |
| new LinkInfo(firstSeenTime, lastLldpTime, lastBddpTime, |
| srcPortState, dstPortState); |
| |
| addOrUpdateLink(lt, newLinkInfo); |
| |
| // Check if reverse link exists. |
| // If it doesn't exist and if the forward link was seen |
| // first seen within a small interval, send probe on the |
| // reverse link. |
| |
| newLinkInfo = links.get(lt); |
| if (newLinkInfo != null && isStandard && isReverse == false) { |
| Link reverseLink = new Link(lt.getDst(), lt.getDstPort(), |
| lt.getSrc(), lt.getSrcPort()); |
| LinkInfo reverseInfo = links.get(reverseLink); |
| if (reverseInfo == null) { |
| // the reverse link does not exist. |
| if (newLinkInfo.getFirstSeenTime() > System.currentTimeMillis() - LINK_TIMEOUT) { |
| this.sendDiscoveryMessage(lt.getDst(), lt.getDstPort(), isStandard, true); |
| } |
| } |
| } |
| |
| // If the received packet is a BDDP packet, then create a reverse BDDP |
| // link as well. |
| if (!isStandard) { |
| Link reverseLink = new Link(lt.getDst(), lt.getDstPort(), |
| lt.getSrc(), lt.getSrcPort()); |
| |
| // srcPortState and dstPort state are reversed. |
| LinkInfo reverseInfo = |
| new LinkInfo(firstSeenTime, lastLldpTime, lastBddpTime, |
| dstPortState, srcPortState); |
| |
| addOrUpdateLink(reverseLink, reverseInfo); |
| } |
| |
| // Remove the node ports from the quarantine and maintenance queues. |
| NodePortTuple nptSrc = new NodePortTuple(lt.getSrc(), lt.getSrcPort()); |
| NodePortTuple nptDst = new NodePortTuple(lt.getDst(), lt.getDstPort()); |
| removeFromQuarantineQueue(nptSrc); |
| removeFromMaintenanceQueue(nptSrc); |
| removeFromQuarantineQueue(nptDst); |
| removeFromMaintenanceQueue(nptDst); |
| |
| // Consume this message |
| return Command.STOP; |
| } |
| |
| protected Command handlePacketIn(long sw, OFPacketIn pi, |
| FloodlightContext cntx) { |
| Ethernet eth = |
| IFloodlightProviderService.bcStore.get(cntx, |
| IFloodlightProviderService.CONTEXT_PI_PAYLOAD); |
| |
| if(eth.getEtherType() == Ethernet.TYPE_BSN) { |
| BSN bsn = (BSN) eth.getPayload(); |
| if (bsn == null) return Command.STOP; |
| if (bsn.getPayload() == null) return Command.STOP; |
| // It could be a packet other than BSN LLDP, therefore |
| // continue with the regular processing. |
| if (bsn.getPayload() instanceof LLDP == false) |
| return Command.CONTINUE; |
| return handleLldp((LLDP) bsn.getPayload(), sw, pi, false, cntx); |
| } else if (eth.getEtherType() == Ethernet.TYPE_LLDP) { |
| return handleLldp((LLDP) eth.getPayload(), sw, pi, true, cntx); |
| } else if (eth.getEtherType() < 1500) { |
| long destMac = eth.getDestinationMAC().toLong(); |
| if ((destMac & LINK_LOCAL_MASK) == LINK_LOCAL_VALUE){ |
| if (log.isTraceEnabled()) { |
| log.trace("Ignoring packet addressed to 802.1D/Q " + |
| "reserved address."); |
| } |
| return Command.STOP; |
| } |
| } |
| |
| // If packet-in is from a quarantine port, stop processing. |
| NodePortTuple npt = new NodePortTuple(sw, pi.getInPort()); |
| if (quarantineQueue.contains(npt)) return Command.STOP; |
| |
| return Command.CONTINUE; |
| } |
| |
| protected UpdateOperation getUpdateOperation(int srcPortState, |
| int dstPortState) { |
| boolean added = |
| (((srcPortState & |
| OFPortState.OFPPS_STP_MASK.getValue()) != |
| OFPortState.OFPPS_STP_BLOCK.getValue()) && |
| ((dstPortState & |
| OFPortState.OFPPS_STP_MASK.getValue()) != |
| OFPortState.OFPPS_STP_BLOCK.getValue())); |
| |
| if (added) return UpdateOperation.LINK_UPDATED; |
| return UpdateOperation.LINK_REMOVED; |
| } |
| |
| |
| |
| protected UpdateOperation getUpdateOperation(int srcPortState) { |
| boolean portUp = ((srcPortState & |
| OFPortState.OFPPS_STP_MASK.getValue()) != |
| OFPortState.OFPPS_STP_BLOCK.getValue()); |
| |
| if (portUp) return UpdateOperation.PORT_UP; |
| else return UpdateOperation.PORT_DOWN; |
| } |
| |
| protected boolean addOrUpdateLink(Link lt, LinkInfo newInfo) { |
| |
| NodePortTuple srcNpt, dstNpt; |
| boolean linkChanged = false; |
| |
| lock.writeLock().lock(); |
| try { |
| // put the new info. if an old info exists, it will be returned. |
| LinkInfo oldInfo = links.put(lt, newInfo); |
| if (oldInfo != null && |
| oldInfo.getFirstSeenTime() < newInfo.getFirstSeenTime()) |
| newInfo.setFirstSeenTime(oldInfo.getFirstSeenTime()); |
| |
| if (log.isTraceEnabled()) { |
| log.trace("addOrUpdateLink: {} {}", |
| lt, |
| (newInfo.getMulticastValidTime()!=null) ? "multicast" : "unicast"); |
| } |
| |
| UpdateOperation updateOperation = null; |
| linkChanged = false; |
| |
| srcNpt = new NodePortTuple(lt.getSrc(), lt.getSrcPort()); |
| dstNpt = new NodePortTuple(lt.getDst(), lt.getDstPort()); |
| |
| if (oldInfo == null) { |
| // index it by switch source |
| if (!switchLinks.containsKey(lt.getSrc())) |
| switchLinks.put(lt.getSrc(), new HashSet<Link>()); |
| switchLinks.get(lt.getSrc()).add(lt); |
| |
| // index it by switch dest |
| if (!switchLinks.containsKey(lt.getDst())) |
| switchLinks.put(lt.getDst(), new HashSet<Link>()); |
| switchLinks.get(lt.getDst()).add(lt); |
| |
| // index both ends by switch:port |
| if (!portLinks.containsKey(srcNpt)) |
| portLinks.put(srcNpt, new HashSet<Link>()); |
| portLinks.get(srcNpt).add(lt); |
| |
| if (!portLinks.containsKey(dstNpt)) |
| portLinks.put(dstNpt, new HashSet<Link>()); |
| portLinks.get(dstNpt).add(lt); |
| |
| // Add to portNOFLinks if the unicast valid time is null |
| if (newInfo.getUnicastValidTime() == null) |
| addLinkToBroadcastDomain(lt); |
| |
| writeLinkToStorage(lt, newInfo); |
| |
| // ONOS: Distinguish added event separately from updated event |
| updateOperation = UpdateOperation.LINK_ADDED; |
| linkChanged = true; |
| |
| // Add to event history |
| evHistTopoLink(lt.getSrc(), |
| lt.getDst(), |
| lt.getSrcPort(), |
| lt.getDstPort(), |
| newInfo.getSrcPortState(), newInfo.getDstPortState(), |
| getLinkType(lt, newInfo), |
| EvAction.LINK_ADDED, "LLDP Recvd"); |
| } else { |
| // Since the link info is already there, we need to |
| // update the right fields. |
| if (newInfo.getUnicastValidTime() == null) { |
| // This is due to a multicast LLDP, so copy the old unicast |
| // value. |
| if (oldInfo.getUnicastValidTime() != null) { |
| newInfo.setUnicastValidTime(oldInfo.getUnicastValidTime()); |
| } |
| } else if (newInfo.getMulticastValidTime() == null) { |
| // This is due to a unicast LLDP, so copy the old multicast |
| // value. |
| if (oldInfo.getMulticastValidTime() != null) { |
| newInfo.setMulticastValidTime(oldInfo.getMulticastValidTime()); |
| } |
| } |
| |
| Long oldTime = oldInfo.getUnicastValidTime(); |
| Long newTime = newInfo.getUnicastValidTime(); |
| // the link has changed its state between openflow and non-openflow |
| // if the unicastValidTimes are null or not null |
| if (oldTime != null & newTime == null) { |
| // openflow -> non-openflow transition |
| // we need to add the link tuple to the portNOFLinks |
| addLinkToBroadcastDomain(lt); |
| linkChanged = true; |
| } else if (oldTime == null & newTime != null) { |
| // non-openflow -> openflow transition |
| // we need to remove the link from the portNOFLinks |
| removeLinkFromBroadcastDomain(lt); |
| linkChanged = true; |
| } |
| |
| // Only update the port states if they've changed |
| if (newInfo.getSrcPortState().intValue() != |
| oldInfo.getSrcPortState().intValue() || |
| newInfo.getDstPortState().intValue() != |
| oldInfo.getDstPortState().intValue()) |
| linkChanged = true; |
| |
| // Write changes to storage. This will always write the updated |
| // valid time, plus the port states if they've changed (i.e. if |
| // they weren't set to null in the previous block of code. |
| writeLinkToStorage(lt, newInfo); |
| |
| if (linkChanged) { |
| updateOperation = getUpdateOperation(newInfo.getSrcPortState(), |
| newInfo.getDstPortState()); |
| if (log.isTraceEnabled()) { |
| log.trace("Updated link {}", lt); |
| } |
| // Add to event history |
| evHistTopoLink(lt.getSrc(), |
| lt.getDst(), |
| lt.getSrcPort(), |
| lt.getDstPort(), |
| newInfo.getSrcPortState(), newInfo.getDstPortState(), |
| getLinkType(lt, newInfo), |
| EvAction.LINK_PORT_STATE_UPDATED, |
| "LLDP Recvd"); |
| } |
| } |
| |
| if (linkChanged) { |
| // find out if the link was added or removed here. |
| LinkUpdate update = new LinkUpdate(new LDUpdate(lt.getSrc(), lt.getSrcPort(), |
| lt.getDst(), lt.getDstPort(), |
| getLinkType(lt, newInfo), |
| updateOperation)); |
| controller.publishUpdate(update); |
| } |
| } finally { |
| lock.writeLock().unlock(); |
| } |
| |
| return linkChanged; |
| } |
| |
| public Map<Long, Set<Link>> getSwitchLinks() { |
| return this.switchLinks; |
| } |
| |
| /** |
| * Removes links from memory and storage. |
| * @param links The List of @LinkTuple to delete. |
| */ |
| protected void deleteLinks(List<Link> links, String reason) { |
| NodePortTuple srcNpt, dstNpt; |
| |
| lock.writeLock().lock(); |
| try { |
| for (Link lt : links) { |
| srcNpt = new NodePortTuple(lt.getSrc(), lt.getSrcPort()); |
| dstNpt =new NodePortTuple(lt.getDst(), lt.getDstPort()); |
| |
| switchLinks.get(lt.getSrc()).remove(lt); |
| switchLinks.get(lt.getDst()).remove(lt); |
| if (switchLinks.containsKey(lt.getSrc()) && |
| switchLinks.get(lt.getSrc()).isEmpty()) |
| this.switchLinks.remove(lt.getSrc()); |
| if (this.switchLinks.containsKey(lt.getDst()) && |
| this.switchLinks.get(lt.getDst()).isEmpty()) |
| this.switchLinks.remove(lt.getDst()); |
| |
| if (this.portLinks.get(srcNpt) != null) { |
| this.portLinks.get(srcNpt).remove(lt); |
| if (this.portLinks.get(srcNpt).isEmpty()) |
| this.portLinks.remove(srcNpt); |
| } |
| if (this.portLinks.get(dstNpt) != null) { |
| this.portLinks.get(dstNpt).remove(lt); |
| if (this.portLinks.get(dstNpt).isEmpty()) |
| this.portLinks.remove(dstNpt); |
| } |
| |
| LinkInfo info = this.links.remove(lt); |
| LinkUpdate update = new LinkUpdate(new LDUpdate(lt.getSrc(), lt.getSrcPort(), |
| lt.getDst(), lt.getDstPort(), |
| getLinkType(lt, info), |
| UpdateOperation.LINK_REMOVED)); |
| controller.publishUpdate(update); |
| |
| // Update Event History |
| evHistTopoLink(lt.getSrc(), |
| lt.getDst(), |
| lt.getSrcPort(), |
| lt.getDstPort(), |
| 0, 0, // Port states |
| ILinkDiscovery.LinkType.INVALID_LINK, |
| EvAction.LINK_DELETED, reason); |
| |
| // remove link from storage. |
| removeLinkFromStorage(lt); |
| |
| // TODO Whenever link is removed, it has to checked if |
| // the switchports must be added to quarantine. |
| |
| if (log.isTraceEnabled()) { |
| log.trace("Deleted link {}", lt); |
| } |
| } |
| } finally { |
| lock.writeLock().unlock(); |
| } |
| } |
| |
| /** |
| * Handles an OFPortStatus message from a switch. We will add or |
| * delete LinkTupes as well re-compute the topology if needed. |
| * @param sw The IOFSwitch that sent the port status message |
| * @param ps The OFPortStatus message |
| * @return The Command to continue or stop after we process this message |
| */ |
| protected Command handlePortStatus(long sw, OFPortStatus ps) { |
| |
| IOFSwitch iofSwitch = floodlightProvider.getSwitches().get(sw); |
| if (iofSwitch == null) return Command.CONTINUE; |
| |
| // ONOS: If we do not control this switch, then we should not process its port status messages |
| if (!registryService.hasControl(iofSwitch.getId())) return Command.CONTINUE; |
| |
| if (log.isTraceEnabled()) { |
| log.trace("handlePortStatus: Switch {} port #{} reason {}; " + |
| "config is {} state is {}", |
| new Object[] {iofSwitch.getStringId(), |
| ps.getDesc().getPortNumber(), |
| ps.getReason(), |
| ps.getDesc().getConfig(), |
| ps.getDesc().getState()}); |
| } |
| |
| short port = ps.getDesc().getPortNumber(); |
| NodePortTuple npt = new NodePortTuple(sw, port); |
| boolean linkDeleted = false; |
| boolean linkInfoChanged = false; |
| |
| lock.writeLock().lock(); |
| try { |
| // if ps is a delete, or a modify where the port is down or |
| // configured down |
| if ((byte)OFPortReason.OFPPR_DELETE.ordinal() == ps.getReason() || |
| ((byte)OFPortReason.OFPPR_MODIFY.ordinal() == |
| ps.getReason() && !portEnabled(ps.getDesc()))) { |
| deleteLinksOnPort(npt, "Port Status Changed"); |
| LinkUpdate update = new LinkUpdate(new LDUpdate(sw, port, UpdateOperation.PORT_DOWN)); |
| controller.publishUpdate(update); |
| linkDeleted = true; |
| } |
| else if (ps.getReason() == |
| (byte)OFPortReason.OFPPR_MODIFY.ordinal()) { |
| // If ps is a port modification and the port state has changed |
| // that affects links in the topology |
| |
| if (this.portLinks.containsKey(npt)) { |
| for (Link lt: this.portLinks.get(npt)) { |
| LinkInfo linkInfo = links.get(lt); |
| assert(linkInfo != null); |
| Integer updatedSrcPortState = null; |
| Integer updatedDstPortState = null; |
| if (lt.getSrc() == npt.getNodeId() && |
| lt.getSrcPort() == npt.getPortId() && |
| (linkInfo.getSrcPortState() != |
| ps.getDesc().getState())) { |
| updatedSrcPortState = ps.getDesc().getState(); |
| linkInfo.setSrcPortState(updatedSrcPortState); |
| } |
| if (lt.getDst() == npt.getNodeId() && |
| lt.getDstPort() == npt.getPortId() && |
| (linkInfo.getDstPortState() != |
| ps.getDesc().getState())) { |
| updatedDstPortState = ps.getDesc().getState(); |
| linkInfo.setDstPortState(updatedDstPortState); |
| } |
| if ((updatedSrcPortState != null) || |
| (updatedDstPortState != null)) { |
| // The link is already known to link discovery |
| // manager and the status has changed, therefore |
| // send an LinkUpdate. |
| UpdateOperation operation = |
| getUpdateOperation(linkInfo.getSrcPortState(), |
| linkInfo.getDstPortState()); |
| LinkUpdate update = new LinkUpdate(new LDUpdate(lt.getSrc(), lt.getSrcPort(), |
| lt.getDst(), lt.getDstPort(), |
| getLinkType(lt, linkInfo), |
| operation)); |
| controller.publishUpdate(update); |
| writeLinkToStorage(lt, linkInfo); |
| linkInfoChanged = true; |
| } |
| } |
| } |
| |
| UpdateOperation operation = |
| getUpdateOperation(ps.getDesc().getState()); |
| LinkUpdate update = new LinkUpdate(new LDUpdate(sw, port, operation)); |
| controller.publishUpdate(update); |
| } |
| |
| if (!linkDeleted && !linkInfoChanged){ |
| if (log.isTraceEnabled()) { |
| log.trace("handlePortStatus: Switch {} port #{} reason {};"+ |
| " no links to update/remove", |
| new Object[] {HexString.toHexString(sw), |
| ps.getDesc().getPortNumber(), |
| ps.getReason()}); |
| } |
| } |
| } finally { |
| lock.writeLock().unlock(); |
| } |
| |
| if (!linkDeleted) { |
| // Send LLDP right away when port state is changed for faster |
| // cluster-merge. If it is a link delete then there is not need |
| // to send the LLDPs right away and instead we wait for the LLDPs |
| // to be sent on the timer as it is normally done |
| // do it outside the write-lock |
| // sendLLDPTask.reschedule(1000, TimeUnit.MILLISECONDS); |
| processNewPort(npt.getNodeId(), npt.getPortId()); |
| } |
| return Command.CONTINUE; |
| } |
| |
| /** |
| * Process a new port. |
| * If link discovery is disabled on the port, then do nothing. |
| * If autoportfast feature is enabled and the port is a fast port, then |
| * do nothing. |
| * Otherwise, send LLDP message. Add the port to quarantine. |
| * @param sw |
| * @param p |
| */ |
| private void processNewPort(long sw, short p) { |
| if (isLinkDiscoverySuppressed(sw, p)) { |
| // Do nothing as link discovery is suppressed. |
| } |
| else if (autoPortFastFeature && isFastPort(sw, p)) { |
| // Do nothing as the port is a fast port. |
| } |
| else { |
| NodePortTuple npt = new NodePortTuple(sw, p); |
| discover(sw, p); |
| // if it is not a fast port, add it to quarantine. |
| if (!isFastPort(sw, p)) { |
| addToQuarantineQueue(npt); |
| } else { |
| // Add to maintenance queue to ensure that BDDP packets |
| // are sent out. |
| addToMaintenanceQueue(npt); |
| } |
| } |
| } |
| |
| /** |
| * We send out LLDP messages when a switch is added to discover the topology |
| * @param sw The IOFSwitch that connected to the controller |
| */ |
| @Override |
| public void addedSwitch(IOFSwitch sw) { |
| |
| if (sw.getEnabledPorts() != null) { |
| for (Short p : sw.getEnabledPortNumbers()) { |
| processNewPort(sw.getId(), p); |
| } |
| } |
| // Update event history |
| evHistTopoSwitch(sw, EvAction.SWITCH_CONNECTED, "None"); |
| LinkUpdate update = new LinkUpdate(new LDUpdate(sw.getId(), null, |
| UpdateOperation.SWITCH_UPDATED)); |
| controller.publishUpdate(update); |
| } |
| |
| /** |
| * When a switch disconnects we remove any links from our map and notify. |
| */ |
| @Override |
| public void removedSwitch(IOFSwitch iofSwitch) { |
| // Update event history |
| long sw = iofSwitch.getId(); |
| evHistTopoSwitch(iofSwitch, EvAction.SWITCH_DISCONNECTED, "None"); |
| List<Link> eraseList = new ArrayList<Link>(); |
| lock.writeLock().lock(); |
| try { |
| if (switchLinks.containsKey(sw)) { |
| if (log.isTraceEnabled()) { |
| log.trace("Handle switchRemoved. Switch {}; removing links {}", |
| HexString.toHexString(sw), switchLinks.get(sw)); |
| } |
| // add all tuples with an endpoint on this switch to erase list |
| eraseList.addAll(switchLinks.get(sw)); |
| deleteLinks(eraseList, "Switch Removed"); |
| |
| // Send a switch removed update |
| LinkUpdate update = new LinkUpdate(new LDUpdate(sw, null, UpdateOperation.SWITCH_REMOVED)); |
| controller.publishUpdate(update); |
| } |
| } finally { |
| lock.writeLock().unlock(); |
| } |
| } |
| |
| /** |
| * We don't react the port changed notifications here. we listen for |
| * OFPortStatus messages directly. Might consider using this notifier |
| * instead |
| */ |
| @Override |
| public void switchPortChanged(Long switchId) { |
| // no-op |
| } |
| |
| /** |
| * Delete links incident on a given switch port. |
| * @param npt |
| * @param reason |
| */ |
| protected void deleteLinksOnPort(NodePortTuple npt, String reason) { |
| List<Link> eraseList = new ArrayList<Link>(); |
| if (this.portLinks.containsKey(npt)) { |
| if (log.isTraceEnabled()) { |
| log.trace("handlePortStatus: Switch {} port #{} " + |
| "removing links {}", |
| new Object[] {HexString.toHexString(npt.getNodeId()), |
| npt.getPortId(), |
| this.portLinks.get(npt)}); |
| } |
| eraseList.addAll(this.portLinks.get(npt)); |
| deleteLinks(eraseList, reason); |
| } |
| } |
| |
| /** |
| * Iterates through the list of links and deletes if the |
| * last discovery message reception time exceeds timeout values. |
| */ |
| protected void timeoutLinks() { |
| List<Link> eraseList = new ArrayList<Link>(); |
| Long curTime = System.currentTimeMillis(); |
| boolean linkChanged = false; |
| |
| // reentrant required here because deleteLink also write locks |
| lock.writeLock().lock(); |
| try { |
| Iterator<Entry<Link, LinkInfo>> it = |
| this.links.entrySet().iterator(); |
| while (it.hasNext()) { |
| Entry<Link, LinkInfo> entry = it.next(); |
| Link lt = entry.getKey(); |
| LinkInfo info = entry.getValue(); |
| |
| // Timeout the unicast and multicast LLDP valid times |
| // independently. |
| if ((info.getUnicastValidTime() != null) && |
| (info.getUnicastValidTime() + (this.LINK_TIMEOUT * 1000) < curTime)){ |
| info.setUnicastValidTime(null); |
| |
| if (info.getMulticastValidTime() != null) |
| addLinkToBroadcastDomain(lt); |
| // Note that even if mTime becomes null later on, |
| // the link would be deleted, which would trigger updateClusters(). |
| linkChanged = true; |
| } |
| if ((info.getMulticastValidTime()!= null) && |
| (info.getMulticastValidTime()+ (this.LINK_TIMEOUT * 1000) < curTime)) { |
| info.setMulticastValidTime(null); |
| // if uTime is not null, then link will remain as openflow |
| // link. If uTime is null, it will be deleted. So, we |
| // don't care about linkChanged flag here. |
| removeLinkFromBroadcastDomain(lt); |
| linkChanged = true; |
| } |
| // Add to the erase list only if the unicast |
| // time is null. |
| if (info.getUnicastValidTime() == null && |
| info.getMulticastValidTime() == null){ |
| eraseList.add(entry.getKey()); |
| } else if (linkChanged) { |
| UpdateOperation operation; |
| operation = getUpdateOperation(info.getSrcPortState(), |
| info.getDstPortState()); |
| LinkUpdate update = new LinkUpdate(new LDUpdate(lt.getSrc(), lt.getSrcPort(), |
| lt.getDst(), lt.getDstPort(), |
| getLinkType(lt, info), |
| operation)); |
| controller.publishUpdate(update); |
| } |
| } |
| |
| // if any link was deleted or any link was changed. |
| if ((eraseList.size() > 0) || linkChanged) { |
| deleteLinks(eraseList, "LLDP timeout"); |
| } |
| } finally { |
| lock.writeLock().unlock(); |
| } |
| } |
| |
| private boolean portEnabled(OFPhysicalPort port) { |
| if (port == null) |
| return false; |
| if ((OFPortConfig.OFPPC_PORT_DOWN.getValue() & port.getConfig()) > 0) |
| return false; |
| if ((OFPortState.OFPPS_LINK_DOWN.getValue() & port.getState()) > 0) |
| return false; |
| // Port STP state doesn't work with multiple VLANs, so ignore it for now |
| // if ((port.getState() & OFPortState.OFPPS_STP_MASK.getValue()) == OFPortState.OFPPS_STP_BLOCK.getValue()) |
| // return false; |
| return true; |
| } |
| |
| public Map<NodePortTuple, Set<Link>> getPortBroadcastDomainLinks() { |
| return portBroadcastDomainLinks; |
| } |
| |
| @Override |
| public Map<Link, LinkInfo> getLinks() { |
| lock.readLock().lock(); |
| Map<Link, LinkInfo> result; |
| try { |
| result = new HashMap<Link, LinkInfo>(links); |
| } finally { |
| lock.readLock().unlock(); |
| } |
| return result; |
| } |
| |
| protected void addLinkToBroadcastDomain(Link lt) { |
| |
| NodePortTuple srcNpt, dstNpt; |
| srcNpt = new NodePortTuple(lt.getSrc(), lt.getSrcPort()); |
| dstNpt = new NodePortTuple(lt.getDst(), lt.getDstPort()); |
| |
| if (!portBroadcastDomainLinks.containsKey(lt.getSrc())) |
| portBroadcastDomainLinks.put(srcNpt, new HashSet<Link>()); |
| portBroadcastDomainLinks.get(srcNpt).add(lt); |
| |
| if (!portBroadcastDomainLinks.containsKey(lt.getDst())) |
| portBroadcastDomainLinks.put(dstNpt, new HashSet<Link>()); |
| portBroadcastDomainLinks.get(dstNpt).add(lt); |
| } |
| |
| protected void removeLinkFromBroadcastDomain(Link lt) { |
| |
| NodePortTuple srcNpt, dstNpt; |
| srcNpt = new NodePortTuple(lt.getSrc(), lt.getSrcPort()); |
| dstNpt = new NodePortTuple(lt.getDst(), lt.getDstPort()); |
| |
| if (portBroadcastDomainLinks.containsKey(srcNpt)) { |
| portBroadcastDomainLinks.get(srcNpt).remove(lt); |
| if (portBroadcastDomainLinks.get(srcNpt).isEmpty()) |
| portBroadcastDomainLinks.remove(srcNpt); |
| } |
| |
| if (portBroadcastDomainLinks.containsKey(dstNpt)) { |
| portBroadcastDomainLinks.get(dstNpt).remove(lt); |
| if (portBroadcastDomainLinks.get(dstNpt).isEmpty()) |
| portBroadcastDomainLinks.remove(dstNpt); |
| } |
| } |
| |
| // STORAGE METHODS |
| /** |
| * Deletes all links from storage |
| */ |
| void clearAllLinks() { |
| storageSource.deleteRowsAsync(LINK_TABLE_NAME, null); |
| } |
| |
| /** |
| * Gets the storage key for a LinkTuple |
| * @param lt The LinkTuple to get |
| * @return The storage key as a String |
| */ |
| private String getLinkId(Link lt) { |
| return HexString.toHexString(lt.getSrc()) + |
| "-" + lt.getSrcPort() + "-" + |
| HexString.toHexString(lt.getDst())+ |
| "-" + lt.getDstPort(); |
| } |
| |
| /** |
| * Writes a LinkTuple and corresponding LinkInfo to storage |
| * @param lt The LinkTuple to write |
| * @param linkInfo The LinkInfo to write |
| */ |
| protected void writeLinkToStorage(Link lt, LinkInfo linkInfo) { |
| LinkType type = getLinkType(lt, linkInfo); |
| |
| // Write only direct links. Do not write links to external |
| // L2 network. |
| // if (type != LinkType.DIRECT_LINK && type != LinkType.TUNNEL) { |
| // return; |
| // } |
| |
| Map<String, Object> rowValues = new HashMap<String, Object>(); |
| String id = getLinkId(lt); |
| rowValues.put(LINK_ID, id); |
| rowValues.put(LINK_VALID_TIME, linkInfo.getUnicastValidTime()); |
| String srcDpid = HexString.toHexString(lt.getSrc()); |
| rowValues.put(LINK_SRC_SWITCH, srcDpid); |
| rowValues.put(LINK_SRC_PORT, lt.getSrcPort()); |
| |
| if (type == LinkType.DIRECT_LINK) |
| rowValues.put(LINK_TYPE, "internal"); |
| else if (type == LinkType.MULTIHOP_LINK) |
| rowValues.put(LINK_TYPE, "external"); |
| else if (type == LinkType.TUNNEL) |
| rowValues.put(LINK_TYPE, "tunnel"); |
| else rowValues.put(LINK_TYPE, "invalid"); |
| |
| if (linkInfo.linkStpBlocked()) { |
| if (log.isTraceEnabled()) { |
| log.trace("writeLink, link {}, info {}, srcPortState Blocked", |
| lt, linkInfo); |
| } |
| rowValues.put(LINK_SRC_PORT_STATE, |
| OFPhysicalPort.OFPortState.OFPPS_STP_BLOCK.getValue()); |
| } else { |
| if (log.isTraceEnabled()) { |
| log.trace("writeLink, link {}, info {}, srcPortState {}", |
| new Object[]{ lt, linkInfo, linkInfo.getSrcPortState() }); |
| } |
| rowValues.put(LINK_SRC_PORT_STATE, linkInfo.getSrcPortState()); |
| } |
| String dstDpid = HexString.toHexString(lt.getDst()); |
| rowValues.put(LINK_DST_SWITCH, dstDpid); |
| rowValues.put(LINK_DST_PORT, lt.getDstPort()); |
| if (linkInfo.linkStpBlocked()) { |
| if (log.isTraceEnabled()) { |
| log.trace("writeLink, link {}, info {}, dstPortState Blocked", |
| lt, linkInfo); |
| } |
| rowValues.put(LINK_DST_PORT_STATE, |
| OFPhysicalPort.OFPortState.OFPPS_STP_BLOCK.getValue()); |
| } else { |
| if (log.isTraceEnabled()) { |
| log.trace("writeLink, link {}, info {}, dstPortState {}", |
| new Object[]{ lt, linkInfo, linkInfo.getDstPortState() }); |
| } |
| rowValues.put(LINK_DST_PORT_STATE, linkInfo.getDstPortState()); |
| } |
| storageSource.updateRowAsync(LINK_TABLE_NAME, rowValues); |
| } |
| |
| public Long readLinkValidTime(Link lt) { |
| // FIXME: We're not currently using this right now, but if we start |
| // to use this again, we probably shouldn't use it in its current |
| // form, because it's doing synchronous storage calls. Depending |
| // on the context this may still be OK, but if it's being called |
| // on the packet in processing thread it should be reworked to |
| // use asynchronous storage calls. |
| Long validTime = null; |
| IResultSet resultSet = null; |
| try { |
| String[] columns = { LINK_VALID_TIME }; |
| String id = getLinkId(lt); |
| resultSet = storageSource.executeQuery(LINK_TABLE_NAME, columns, |
| new OperatorPredicate(LINK_ID, OperatorPredicate.Operator.EQ, id), null); |
| if (resultSet.next()) |
| validTime = resultSet.getLong(LINK_VALID_TIME); |
| } |
| finally { |
| if (resultSet != null) |
| resultSet.close(); |
| } |
| return validTime; |
| } |
| |
| /** |
| * Removes a link from storage using an asynchronous call. |
| * @param lt The LinkTuple to delete. |
| */ |
| protected void removeLinkFromStorage(Link lt) { |
| String id = getLinkId(lt); |
| storageSource.deleteRowAsync(LINK_TABLE_NAME, id); |
| } |
| |
| @Override |
| public void addListener(ILinkDiscoveryListener listener) { |
| linkDiscoveryAware.add(listener); |
| } |
| |
| /** |
| * Register a link discovery aware component |
| * @param linkDiscoveryAwareComponent |
| */ |
| public void addLinkDiscoveryAware(ILinkDiscoveryListener linkDiscoveryAwareComponent) { |
| // TODO make this a copy on write set or lock it somehow |
| this.linkDiscoveryAware.add(linkDiscoveryAwareComponent); |
| } |
| |
| /** |
| * Deregister a link discovery aware component |
| * @param linkDiscoveryAwareComponent |
| */ |
| public void removeLinkDiscoveryAware(ILinkDiscoveryListener linkDiscoveryAwareComponent) { |
| // TODO make this a copy on write set or lock it somehow |
| this.linkDiscoveryAware.remove(linkDiscoveryAwareComponent); |
| } |
| |
| /** |
| * Sets the IStorageSource to use for ITology |
| * @param storageSource the storage source to use |
| */ |
| public void setStorageSource(IStorageSourceService storageSource) { |
| this.storageSource = storageSource; |
| } |
| |
| /** |
| * Gets the storage source for this ITopology |
| * @return The IStorageSource ITopology is writing to |
| */ |
| public IStorageSourceService getStorageSource() { |
| return storageSource; |
| } |
| |
| @Override |
| public boolean isCallbackOrderingPrereq(OFType type, String name) { |
| return false; |
| } |
| |
| @Override |
| public boolean isCallbackOrderingPostreq(OFType type, String name) { |
| return false; |
| } |
| |
| @Override |
| public void rowsModified(String tableName, Set<Object> rowKeys) { |
| Map<Long, IOFSwitch> switches = floodlightProvider.getSwitches(); |
| ArrayList<IOFSwitch> updated_switches = new ArrayList<IOFSwitch>(); |
| for(Object key: rowKeys) { |
| Long swId = new Long(HexString.toLong((String)key)); |
| if (switches.containsKey(swId)) { |
| IOFSwitch sw = switches.get(swId); |
| boolean curr_status = sw.hasAttribute(IOFSwitch.SWITCH_IS_CORE_SWITCH); |
| boolean new_status = false; |
| IResultSet resultSet = null; |
| |
| try { |
| resultSet = storageSource.getRow(tableName, key); |
| for (Iterator<IResultSet> it = resultSet.iterator(); it.hasNext();) { |
| // In case of multiple rows, use the status in last row? |
| Map<String, Object> row = it.next().getRow(); |
| if (row.containsKey(SWITCH_CONFIG_CORE_SWITCH)) { |
| new_status = ((String)row.get(SWITCH_CONFIG_CORE_SWITCH)).equals("true"); |
| } |
| } |
| } |
| finally { |
| if (resultSet != null) |
| resultSet.close(); |
| } |
| |
| if (curr_status != new_status) { |
| updated_switches.add(sw); |
| } |
| } else { |
| if (log.isTraceEnabled()) { |
| log.trace("Update for switch which has no entry in switch " + |
| "list (dpid={}), a delete action.", (String)key); |
| } |
| } |
| } |
| |
| for (IOFSwitch sw : updated_switches) { |
| // Set SWITCH_IS_CORE_SWITCH to it's inverse value |
| if (sw.hasAttribute(IOFSwitch.SWITCH_IS_CORE_SWITCH)) { |
| sw.removeAttribute(IOFSwitch.SWITCH_IS_CORE_SWITCH); |
| if (log.isTraceEnabled()) { |
| log.trace("SWITCH_IS_CORE_SWITCH set to False for {}", sw); |
| } |
| LinkUpdate update = new LinkUpdate(new LDUpdate(sw.getId(), SwitchType.BASIC_SWITCH, |
| UpdateOperation.SWITCH_UPDATED)); |
| controller.publishUpdate(update); |
| } |
| else { |
| sw.setAttribute(IOFSwitch.SWITCH_IS_CORE_SWITCH, new Boolean(true)); |
| if (log.isTraceEnabled()) { |
| log.trace("SWITCH_IS_CORE_SWITCH set to True for {}", sw); |
| } |
| LinkUpdate update = new LinkUpdate(new LDUpdate(sw.getId(), SwitchType.CORE_SWITCH, |
| UpdateOperation.SWITCH_UPDATED)); |
| controller.publishUpdate(update); |
| } |
| } |
| } |
| |
| @Override |
| public void rowsDeleted(String tableName, Set<Object> rowKeys) { |
| // Ignore delete events, the switch delete will do the right thing on it's own |
| } |
| |
| // IFloodlightModule classes |
| |
| @Override |
| public Collection<Class<? extends IFloodlightService>> getModuleServices() { |
| Collection<Class<? extends IFloodlightService>> l = |
| new ArrayList<Class<? extends IFloodlightService>>(); |
| l.add(ILinkDiscoveryService.class); |
| //l.add(ITopologyService.class); |
| return l; |
| } |
| |
| @Override |
| public Map<Class<? extends IFloodlightService>, IFloodlightService> |
| getServiceImpls() { |
| Map<Class<? extends IFloodlightService>, |
| IFloodlightService> m = |
| new HashMap<Class<? extends IFloodlightService>, |
| IFloodlightService>(); |
| // We are the class that implements the service |
| m.put(ILinkDiscoveryService.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(IStorageSourceService.class); |
| l.add(IThreadPoolService.class); |
| l.add(IRestApiService.class); |
| // Added by ONOS |
| l.add(IControllerRegistryService.class); |
| return l; |
| } |
| |
| @Override |
| public void init(FloodlightModuleContext context) |
| throws FloodlightModuleException { |
| floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class); |
| storageSource = context.getServiceImpl(IStorageSourceService.class); |
| threadPool = context.getServiceImpl(IThreadPoolService.class); |
| restApi = context.getServiceImpl(IRestApiService.class); |
| // Added by ONOS |
| registryService = context.getServiceImpl(IControllerRegistryService.class); |
| |
| // Set the autoportfast feature to false. |
| this.autoPortFastFeature = false; |
| |
| // We create this here because there is no ordering guarantee |
| this.linkDiscoveryAware = new ArrayList<ILinkDiscoveryListener>(); |
| this.lock = new ReentrantReadWriteLock(); |
| this.links = new HashMap<Link, LinkInfo>(); |
| this.portLinks = new HashMap<NodePortTuple, Set<Link>>(); |
| this.suppressLinkDiscovery = |
| Collections.synchronizedSet(new HashSet<NodePortTuple>()); |
| this.portBroadcastDomainLinks = new HashMap<NodePortTuple, Set<Link>>(); |
| this.switchLinks = new HashMap<Long, Set<Link>>(); |
| this.quarantineQueue = new LinkedBlockingQueue<NodePortTuple>(); |
| this.maintenanceQueue = new LinkedBlockingQueue<NodePortTuple>(); |
| // Added by ONOS |
| this.remoteSwitches = new HashMap<Long, IOnosRemoteSwitch>(); |
| |
| this.evHistTopologySwitch = |
| new EventHistory<EventHistoryTopologySwitch>("Topology: Switch"); |
| this.evHistTopologyLink = |
| new EventHistory<EventHistoryTopologyLink>("Topology: Link"); |
| this.evHistTopologyCluster = |
| new EventHistory<EventHistoryTopologyCluster>("Topology: Cluster"); |
| } |
| |
| @Override |
| @LogMessageDocs({ |
| @LogMessageDoc(level="ERROR", |
| message="No storage source found.", |
| explanation="Storage source was not initialized; cannot initialize " + |
| "link discovery.", |
| recommendation=LogMessageDoc.REPORT_CONTROLLER_BUG), |
| @LogMessageDoc(level="ERROR", |
| message="Error in installing listener for " + |
| "switch config table {table}", |
| explanation="Failed to install storage notification for the " + |
| "switch config table", |
| recommendation=LogMessageDoc.REPORT_CONTROLLER_BUG), |
| @LogMessageDoc(level="ERROR", |
| message="No storage source found.", |
| explanation="Storage source was not initialized; cannot initialize " + |
| "link discovery.", |
| recommendation=LogMessageDoc.REPORT_CONTROLLER_BUG), |
| @LogMessageDoc(level="ERROR", |
| message="Exception in LLDP send timer.", |
| explanation="An unknown error occured while sending LLDP " + |
| "messages to switches.", |
| recommendation=LogMessageDoc.CHECK_SWITCH) |
| }) |
| public void startUp(FloodlightModuleContext context) { |
| // Create our storage tables |
| if (storageSource == null) { |
| log.error("No storage source found."); |
| return; |
| } |
| |
| storageSource.createTable(LINK_TABLE_NAME, null); |
| storageSource.setTablePrimaryKeyName(LINK_TABLE_NAME, LINK_ID); |
| storageSource.deleteMatchingRows(LINK_TABLE_NAME, null); |
| // Register for storage updates for the switch table |
| try { |
| storageSource.addListener(SWITCH_CONFIG_TABLE_NAME, this); |
| } catch (StorageException ex) { |
| log.error("Error in installing listener for " + |
| "switch table {}", SWITCH_CONFIG_TABLE_NAME); |
| } |
| |
| ScheduledExecutorService ses = threadPool.getScheduledExecutor(); |
| controller = |
| context.getServiceImpl(IFloodlightProviderService.class); |
| |
| // To be started by the first switch connection |
| discoveryTask = new SingletonTask(ses, new Runnable() { |
| @Override |
| public void run() { |
| try { |
| discoverLinks(); |
| } catch (StorageException e) { |
| log.error("Storage exception in LLDP send timer; " + |
| "terminating process", e); |
| floodlightProvider.terminate(); |
| } catch (Exception e) { |
| log.error("Exception in LLDP send timer.", e); |
| } finally { |
| if (!shuttingDown) { |
| // null role implies HA mode is not enabled. |
| Role role = floodlightProvider.getRole(); |
| if (role == null || role == Role.MASTER) { |
| log.trace("Rescheduling discovery task as role = {}", role); |
| discoveryTask.reschedule(DISCOVERY_TASK_INTERVAL, |
| TimeUnit.SECONDS); |
| } else { |
| log.trace("Stopped LLDP rescheduling due to role = {}.", role); |
| } |
| } |
| } |
| } |
| }); |
| |
| // null role implies HA mode is not enabled. |
| Role role = floodlightProvider.getRole(); |
| if (role == null || role == Role.MASTER) { |
| log.trace("Setup: Rescheduling discovery task. role = {}", role); |
| discoveryTask.reschedule(DISCOVERY_TASK_INTERVAL, TimeUnit.SECONDS); |
| } else { |
| log.trace("Setup: Not scheduling LLDP as role = {}.", role); |
| } |
| |
| // Setup the BDDP task. It is invoked whenever switch port tuples |
| // are added to the quarantine list. |
| bddpTask = new SingletonTask(ses, new QuarantineWorker()); |
| bddpTask.reschedule(BDDP_TASK_INTERVAL, TimeUnit.MILLISECONDS); |
| |
| |
| // Register for the OpenFlow messages we want to receive |
| floodlightProvider.addOFMessageListener(OFType.PACKET_IN, this); |
| floodlightProvider.addOFMessageListener(OFType.PORT_STATUS, this); |
| // Register for switch updates |
| floodlightProvider.addOFSwitchListener(this); |
| floodlightProvider.addHAListener(this); |
| floodlightProvider.addInfoProvider("summary", this); |
| if (restApi != null) |
| restApi.addRestletRoutable(new LinkDiscoveryWebRoutable()); |
| setControllerTLV(); |
| } |
| |
| // **************************************************** |
| // Topology Manager's Event History members and methods |
| // **************************************************** |
| |
| // Topology Manager event history |
| public EventHistory<EventHistoryTopologySwitch> evHistTopologySwitch; |
| public EventHistory<EventHistoryTopologyLink> evHistTopologyLink; |
| public EventHistory<EventHistoryTopologyCluster> evHistTopologyCluster; |
| public EventHistoryTopologySwitch evTopoSwitch; |
| public EventHistoryTopologyLink evTopoLink; |
| public EventHistoryTopologyCluster evTopoCluster; |
| |
| // Switch Added/Deleted |
| private void evHistTopoSwitch(IOFSwitch sw, EvAction actn, String reason) { |
| if (evTopoSwitch == null) { |
| evTopoSwitch = new EventHistoryTopologySwitch(); |
| } |
| evTopoSwitch.dpid = sw.getId(); |
| if ((sw.getChannel() != null) && |
| (SocketAddress.class.isInstance( |
| sw.getChannel().getRemoteAddress()))) { |
| evTopoSwitch.ipv4Addr = |
| IPv4.toIPv4Address(((InetSocketAddress)(sw.getChannel(). |
| getRemoteAddress())).getAddress().getAddress()); |
| evTopoSwitch.l4Port = |
| ((InetSocketAddress)(sw.getChannel(). |
| getRemoteAddress())).getPort(); |
| } else { |
| evTopoSwitch.ipv4Addr = 0; |
| evTopoSwitch.l4Port = 0; |
| } |
| evTopoSwitch.reason = reason; |
| evTopoSwitch = evHistTopologySwitch.put(evTopoSwitch, actn); |
| } |
| |
| private void evHistTopoLink(long srcDpid, long dstDpid, short srcPort, |
| short dstPort, int srcPortState, int dstPortState, |
| ILinkDiscovery.LinkType linkType, |
| EvAction actn, String reason) { |
| if (evTopoLink == null) { |
| evTopoLink = new EventHistoryTopologyLink(); |
| } |
| evTopoLink.srcSwDpid = srcDpid; |
| evTopoLink.dstSwDpid = dstDpid; |
| evTopoLink.srcSwport = srcPort & 0xffff; |
| evTopoLink.dstSwport = dstPort & 0xffff; |
| evTopoLink.srcPortState = srcPortState; |
| evTopoLink.dstPortState = dstPortState; |
| evTopoLink.reason = reason; |
| switch (linkType) { |
| case DIRECT_LINK: |
| evTopoLink.linkType = "DIRECT_LINK"; |
| break; |
| case MULTIHOP_LINK: |
| evTopoLink.linkType = "MULTIHOP_LINK"; |
| break; |
| case TUNNEL: |
| evTopoLink.linkType = "TUNNEL"; |
| break; |
| case INVALID_LINK: |
| default: |
| evTopoLink.linkType = "Unknown"; |
| break; |
| } |
| evTopoLink = evHistTopologyLink.put(evTopoLink, actn); |
| } |
| |
| public void evHistTopoCluster(long dpid, long clusterIdOld, |
| long clusterIdNew, EvAction action, String reason) { |
| if (evTopoCluster == null) { |
| evTopoCluster = new EventHistoryTopologyCluster(); |
| } |
| evTopoCluster.dpid = dpid; |
| evTopoCluster.clusterIdOld = clusterIdOld; |
| evTopoCluster.clusterIdNew = clusterIdNew; |
| evTopoCluster.reason = reason; |
| evTopoCluster = evHistTopologyCluster.put(evTopoCluster, action); |
| } |
| |
| @Override |
| public Map<String, Object> getInfo(String type) { |
| if (!"summary".equals(type)) return null; |
| |
| Map<String, Object> info = new HashMap<String, Object>(); |
| |
| int num_links = 0; |
| for (Set<Link> links : switchLinks.values()) |
| num_links += links.size(); |
| info.put("# inter-switch links", num_links / 2); |
| |
| return info; |
| } |
| |
| // IHARoleListener |
| @Override |
| public void roleChanged(Role oldRole, Role newRole) { |
| switch(newRole) { |
| case MASTER: |
| if (oldRole == Role.SLAVE) { |
| if (log.isTraceEnabled()) { |
| log.trace("Sending LLDPs " + |
| "to HA change from SLAVE->MASTER"); |
| } |
| clearAllLinks(); |
| log.debug("Role Change to Master: Rescheduling discovery task."); |
| discoveryTask.reschedule(1, TimeUnit.MICROSECONDS); |
| } |
| break; |
| case SLAVE: |
| if (log.isTraceEnabled()) { |
| log.trace("Clearing links due to " + |
| "HA change to SLAVE"); |
| } |
| switchLinks.clear(); |
| links.clear(); |
| portLinks.clear(); |
| portBroadcastDomainLinks.clear(); |
| discoverOnAllPorts(); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| @Override |
| public void controllerNodeIPsChanged( |
| Map<String, String> curControllerNodeIPs, |
| Map<String, String> addedControllerNodeIPs, |
| Map<String, String> removedControllerNodeIPs) { |
| // ignore |
| } |
| |
| public boolean isAutoPortFastFeature() { |
| return autoPortFastFeature; |
| } |
| |
| public void setAutoPortFastFeature(boolean autoPortFastFeature) { |
| this.autoPortFastFeature = autoPortFastFeature; |
| } |
| } |