import java.net.UnknownHostException;
import java.util.Arrays;
import java.util.Collections;
+import java.util.EnumSet;
import java.util.HashSet;
import java.util.Set;
import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
-
+import java.util.concurrent.CopyOnWriteArraySet;
+
+import org.opendaylight.controller.arphandler.ARPEvent;
+import org.opendaylight.controller.arphandler.ARPReply;
+import org.opendaylight.controller.arphandler.ARPRequest;
+import org.opendaylight.controller.clustering.services.CacheConfigException;
+import org.opendaylight.controller.clustering.services.CacheExistException;
+import org.opendaylight.controller.clustering.services.ICacheUpdateAware;
+import org.opendaylight.controller.clustering.services.IClusterContainerServices;
+import org.opendaylight.controller.clustering.services.IClusterServices;
+import org.opendaylight.controller.connectionmanager.IConnectionManager;
import org.opendaylight.controller.hosttracker.IfHostListener;
import org.opendaylight.controller.hosttracker.IfIptoHost;
import org.opendaylight.controller.hosttracker.hostAware.HostNodeConnector;
import org.opendaylight.controller.sal.core.Node;
import org.opendaylight.controller.sal.core.NodeConnector;
import org.opendaylight.controller.sal.packet.ARP;
-import org.opendaylight.controller.sal.packet.BitBufferHelper;
import org.opendaylight.controller.sal.packet.Ethernet;
import org.opendaylight.controller.sal.packet.IDataPacketService;
import org.opendaylight.controller.sal.packet.IListenDataPacket;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-public class ArpHandler implements IHostFinder, IListenDataPacket {
- private static final Logger logger = LoggerFactory
- .getLogger(ArpHandler.class);
- private IfIptoHost hostTracker = null;
- private ISwitchManager switchManager = null;
+public class ArpHandler implements IHostFinder, IListenDataPacket, ICacheUpdateAware<ARPEvent, Boolean> {
+ private static final Logger log = LoggerFactory.getLogger(ArpHandler.class);
+ static final String ARP_EVENT_CACHE_NAME = "arphandler.arpRequestReplyEvent";
+ private IfIptoHost hostTracker;
+ private ISwitchManager switchManager;
private ITopologyManager topologyManager;
- private IDataPacketService dataPacketService = null;
- private Set<IfHostListener> hostListener = Collections
- .synchronizedSet(new HashSet<IfHostListener>());
+ private IDataPacketService dataPacketService;
+ private IClusterContainerServices clusterContainerService;
+ private IConnectionManager connectionManager;
+ private Set<IfHostListener> hostListeners = new CopyOnWriteArraySet<IfHostListener>();
private ConcurrentMap<InetAddress, Set<HostNodeConnector>> arpRequestors;
private ConcurrentMap<InetAddress, Short> countDownTimers;
private Timer periodicTimer;
+ /*
+ * A cluster allocated cache. Used for synchronizing ARP request/reply
+ * events across all cluster controllers. To raise an event, we put() a specific
+ * event object (as key) and all nodes handle it in the entryUpdated callback.
+ *
+ * In case of ARPReply, we put true value to send replies to any requestors
+ * by calling generateAndSendReply
+ */
+ private ConcurrentMap<ARPEvent, Boolean> arpRequestReplyEvent;
+
+ void setConnectionManager(IConnectionManager cm){
+ this.connectionManager = cm;
+ }
+
+ void unsetConnectionManager(IConnectionManager cm){
+ if (this.connectionManager == cm){
+ connectionManager = null;
+ }
+ }
+
+ void setClusterContainerService(IClusterContainerServices s){
+ this.clusterContainerService = s;
+ }
+
+ void unsetClusterContainerService(IClusterContainerServices s) {
+ if (this.clusterContainerService == s) {
+ this.clusterContainerService = null;
+ }
+ }
void setHostListener(IfHostListener s) {
- if (this.hostListener != null) {
- this.hostListener.add(s);
+ if (this.hostListeners != null) {
+ this.hostListeners.add(s);
}
}
void unsetHostListener(IfHostListener s) {
- if (this.hostListener != null) {
- this.hostListener.remove(s);
+ if (this.hostListeners != null) {
+ this.hostListeners.remove(s);
}
}
}
}
- public IfIptoHost getHostTracker() {
- return hostTracker;
- }
-
public void setHostTracker(IfIptoHost hostTracker) {
- logger.debug("Setting HostTracker");
+ log.debug("Setting HostTracker");
this.hostTracker = hostTracker;
}
public void unsetHostTracker(IfIptoHost s) {
- logger.debug("UNSetting HostTracker");
+ log.debug("UNSetting HostTracker");
if (this.hostTracker == s) {
this.hostTracker = null;
}
byte[] senderIP = sIP.getAddress();
byte[] targetIP = tIP.getAddress();
ARP arp = new ARP();
- arp.setHardwareType(ARP.HW_TYPE_ETHERNET).setProtocolType(
- EtherTypes.IPv4.shortValue())
- .setHardwareAddressLength((byte) 6).setProtocolAddressLength(
- (byte) 4).setOpCode(ARP.REPLY)
- .setSenderHardwareAddress(sMAC).setSenderProtocolAddress(
- senderIP).setTargetHardwareAddress(tMAC)
- .setTargetProtocolAddress(targetIP);
+ arp.setHardwareType(ARP.HW_TYPE_ETHERNET)
+ .setProtocolType(EtherTypes.IPv4.shortValue())
+ .setHardwareAddressLength((byte) 6)
+ .setProtocolAddressLength((byte) 4)
+ .setOpCode(ARP.REPLY)
+ .setSenderHardwareAddress(sMAC)
+ .setSenderProtocolAddress(senderIP)
+ .setTargetHardwareAddress(tMAC)
+ .setTargetProtocolAddress(targetIP);
Ethernet ethernet = new Ethernet();
- ethernet.setSourceMACAddress(sMAC).setDestinationMACAddress(tMAC)
- .setEtherType(EtherTypes.ARP.shortValue()).setPayload(arp);
+ ethernet.setSourceMACAddress(sMAC)
+ .setDestinationMACAddress(tMAC)
+ .setEtherType(EtherTypes.ARP.shortValue())
+ .setPayload(arp);
RawPacket destPkt = this.dataPacketService.encodeDataPacket(ethernet);
destPkt.setOutgoingNodeConnector(p);
this.dataPacketService.transmitDataPacket(destPkt);
}
- private boolean isBroadcastMAC(byte[] mac) {
- if (BitBufferHelper.toNumber(mac) == 0xffffffffffffL) { //TODO: implement this in our Ethernet
- return true;
- }
- return false;
- }
-
- private boolean isUnicastMAC(byte[] mac) {
- if ((BitBufferHelper.toNumber(mac) & 0x010000000000L) == 0) {
- return true;
- }
- return false;
- }
-
protected void handleARPPacket(Ethernet eHeader, ARP pkt, NodeConnector p) {
- if (pkt.getOpCode() == 0x1) {
- logger.debug("Received ARP REQUEST Packet from NodeConnector: {}",
- p);
- } else {
- logger.debug("Received ARP REPLY Packet from NodeConnector: {}",
- p);
- }
- InetAddress targetIP = null;
- try {
- targetIP = InetAddress.getByAddress(pkt.getTargetProtocolAddress());
- } catch (UnknownHostException e1) {
- return;
- }
- InetAddress sourceIP = null;
- try {
- sourceIP = InetAddress.getByAddress(pkt.getSenderProtocolAddress());
- } catch (UnknownHostException e1) {
- return;
- }
- byte[] targetMAC = eHeader.getDestinationMACAddress();
- byte[] sourceMAC = eHeader.getSourceMACAddress();
+ byte[] sourceMAC = eHeader.getSourceMACAddress();
+ byte[] targetMAC = eHeader.getDestinationMACAddress();
/*
* Sanity Check; drop ARP packets originated by the controller itself.
* This is to avoid continuous flooding
*/
if (Arrays.equals(sourceMAC, getControllerMAC())) {
- if (logger.isDebugEnabled()) {
- logger.debug(
- "Receive the self originated packet (srcMAC {}) --> DROP",
- HexEncode.bytesToHexString(sourceMAC));
+ if (log.isDebugEnabled()) {
+ log.debug("Receive a self originated ARP pkt (srcMAC {}) --> DROP",
+ HexEncode.bytesToHexString(sourceMAC));
}
return;
}
+ InetAddress targetIP, sourceIP;
+ try {
+ targetIP = InetAddress.getByAddress(pkt.getTargetProtocolAddress());
+ sourceIP = InetAddress.getByAddress(pkt.getSenderProtocolAddress());
+ } catch (UnknownHostException e1) {
+ log.debug("Invalid host in ARP packet: {}", e1.getMessage());
+ return;
+ }
+
Subnet subnet = null;
if (switchManager != null) {
subnet = switchManager.getSubnetByNetworkAddress(sourceIP);
}
if (subnet == null) {
- logger.debug("can't find subnet matching {}, drop packet",sourceIP);
+ log.debug("ARPHandler: can't find subnet matching {}, drop packet", sourceIP);
return;
}
- logger.debug("Found {} matching {}", subnet, sourceIP);
- /*
- * Make sure that the host is a legitimate member of this subnet
- */
+
+ // Make sure that the host is a legitimate member of this subnet
if (!subnet.hasNodeConnector(p)) {
- logger.debug("{} showing up on {} does not belong to {}",
+ log.debug("{} showing up on {} does not belong to {}",
new Object[] { sourceIP, p, subnet });
return;
}
HostNodeConnector requestor = null;
- if (isUnicastMAC(sourceMAC)) {
- // TODO For not this is only OPENFLOW but we need to fix this
- if (p.getType().equals(
- NodeConnector.NodeConnectorIDType.OPENFLOW)) {
- try {
- requestor = new HostNodeConnector(sourceMAC, sourceIP, p, subnet
- .getVlan());
- } catch (ConstructionException e) {
- return;
- }
- /*
- * Learn host from the received ARP REQ/REPLY, inform
- * Host Tracker
- */
- logger.debug("Inform Host tracker of new host {}", requestor.getNetworkAddress());
- synchronized (this.hostListener) {
- for (IfHostListener listener : this.hostListener) {
- listener.hostListener(requestor);
- }
- }
+ if (NetUtils.isUnicastMACAddr(sourceMAC) && p.getNode() != null) {
+ try {
+ requestor = new HostNodeConnector(sourceMAC, sourceIP, p, subnet.getVlan());
+ } catch (ConstructionException e) {
+ log.debug("Received ARP packet with invalid MAC: {}", sourceMAC);
+ return;
+ }
+ /*
+ * Learn host from the received ARP REQ/REPLY, inform Host Tracker
+ */
+ log.trace("Inform Host tracker of new host {}", requestor.getNetworkAddress());
+ for (IfHostListener listener : this.hostListeners) {
+ listener.hostListener(requestor);
}
- }
- /*
- * Gratuitous ARP. If there are hosts (in arpRequestors) waiting for the
- * ARP reply for this sourceIP, it's time to generate the reply and it
- * to these hosts
- */
- if (sourceIP.equals(targetIP)) {
- generateAndSendReply(sourceIP, sourceMAC);
- return;
}
/*
- * ARP Reply. If there are hosts (in arpRequesttors) waiting for the ARP
- * reply for this sourceIP, it's time to generate the reply and it to
- * these hosts
+ * OpCode != request -> ARP Reply. If there are hosts (in
+ * arpRequestors) waiting for the ARP reply for this sourceIP, it's
+ * time to generate the reply and send it to these hosts.
+ *
+ * If sourceIP==targetIP, it is a Gratuitous ARP. If there are hosts (in
+ * arpRequestors) waiting for the ARP reply for this sourceIP, it's time
+ * to generate the reply and send it to these hosts
*/
- if (pkt.getOpCode() != ARP.REQUEST) {
- generateAndSendReply(sourceIP, sourceMAC);
+
+ if (pkt.getOpCode() != ARP.REQUEST || sourceIP.equals(targetIP)) {
+ // Raise a reply event so that any waiting requestors will be sent a reply
+ // the true value indicates we should generate replies to requestors across the cluster
+ log.trace("Received ARP reply packet from {}, reply to all requestors.", sourceIP);
+ arpRequestReplyEvent.put(new ARPReply(sourceIP, sourceMAC), true);
return;
}
* the IP address defined in the subnet as source address
*/
/*
- * Send ARP reply if target IP is gateway IP
+ * If target IP is gateway IP, Send ARP reply
*/
if ((targetIP.equals(subnet.getNetworkAddress()))
- && (isBroadcastMAC(targetMAC) || Arrays.equals(targetMAC,
- getControllerMAC()))) {
- sendARPReply(p, getControllerMAC(), targetIP, pkt
- .getSenderHardwareAddress(), sourceIP);
+ && (NetUtils.isBroadcastMACAddr(targetMAC) || Arrays.equals(targetMAC, getControllerMAC()))) {
+ if (connectionManager.isLocal(p.getNode())){
+ if (log.isTraceEnabled()){
+ log.trace("Received local ARP req. for default gateway. Replying with controller MAC: {}", getControllerMAC());
+ }
+ sendARPReply(p, getControllerMAC(), targetIP, pkt.getSenderHardwareAddress(), sourceIP);
+ } else {
+ log.trace("Received non-local ARP req. for default gateway. Raising reply event");
+ arpRequestReplyEvent.put(
+ new ARPReply(p, targetIP, getControllerMAC(), sourceIP, pkt.getSenderHardwareAddress()), false);
+ }
return;
}
- /*
- * unknown host, initiate ARP request
- */
+
HostNodeConnector host = hostTracker.hostQuery(targetIP);
+ // unknown host, initiate ARP request
if (host == null) {
// add the requestor to the list so that we can replay the reply
// when the host responds
if (requestor != null) {
- Set<HostNodeConnector> requestorSet = arpRequestors
- .get(targetIP);
- if ((requestorSet == null) || requestorSet.isEmpty()) {
- requestorSet = new HashSet<HostNodeConnector>();
- countDownTimers.put(targetIP, (short) 2); // set max timeout
- // to 2sec
+ Set<HostNodeConnector> requestorSet = arpRequestors.get(targetIP);
+ if (requestorSet == null) {
+ requestorSet = Collections.newSetFromMap(new ConcurrentHashMap<HostNodeConnector, Boolean>());
+ arpRequestors.put(targetIP, requestorSet);
}
requestorSet.add(requestor);
- arpRequestors.put(targetIP, requestorSet);
+ countDownTimers.put(targetIP, (short) 2); // reset timeout to 2sec
}
- sendBcastARPRequest(targetIP, subnet);
- return;
- }
- /*
- * Known target host, send ARP REPLY
- * make sure that targetMAC matches the host's MAC if it is not broadcastMAC
- */
- if (isBroadcastMAC(targetMAC)
- || Arrays.equals(host.getDataLayerAddressBytes(), targetMAC)) {
- sendARPReply(p, host.getDataLayerAddressBytes(), host
- .getNetworkAddress(), pkt.getSenderHardwareAddress(),
- sourceIP);
- return;
+ //Raise a bcast request event, all controllers need to send one
+ log.trace("Sending a bcast ARP request for {}", targetIP);
+ arpRequestReplyEvent.put(new ARPRequest(targetIP, subnet), false);
+
} else {
/*
- * target target MAC has been changed. For now, discard it.
- * TODO: We may need to send unicast ARP REQUEST on behalf of the
- * target back to the sender to trigger the sender to
- * update its table
+ * Target host known (across the cluster), send ARP REPLY make sure that targetMAC
+ * matches the host's MAC if it is not broadcastMAC
*/
- return;
+ if (NetUtils.isBroadcastMACAddr(targetMAC) || Arrays.equals(host.getDataLayerAddressBytes(), targetMAC)) {
+ log.trace("Received ARP req. for known host {}, sending reply...", targetIP);
+ if (connectionManager.isLocal(p.getNode())) {
+ sendARPReply(p,
+ host.getDataLayerAddressBytes(),
+ host.getNetworkAddress(),
+ pkt.getSenderHardwareAddress(),
+ sourceIP);
+ } else {
+ arpRequestReplyEvent.put(new ARPReply(
+ p,
+ host.getNetworkAddress(),
+ host.getDataLayerAddressBytes(),
+ sourceIP,
+ pkt.getSenderHardwareAddress()), false);
+ }
+ } else {
+ /*
+ * Target MAC has been changed. For now, discard it.
+ * TODO: We may need to send unicast ARP REQUEST on behalf of
+ * the target back to the sender to trigger the sender to update
+ * its table
+ */
+ }
}
}
if (subnet.isFlatLayer2()) {
nodeConnectors = new HashSet<NodeConnector>();
for (Node n : this.switchManager.getNodes()) {
- nodeConnectors.addAll(this.switchManager
- .getUpNodeConnectors(n));
+ nodeConnectors.addAll(this.switchManager.getUpNodeConnectors(n));
}
} else {
nodeConnectors = subnet.getNodeConnectors();
}
+
for (NodeConnector p : nodeConnectors) {
- if (topologyManager.isInternal(p)) {
+
+ //fiter out any non-local or internal ports
+ if (! connectionManager.isLocal(p.getNode()) || topologyManager.isInternal(p)) {
continue;
}
ARP arp = new ARP();
byte[] senderIP = subnet.getNetworkAddress().getAddress();
- byte[] targetIPB = targetIP.getAddress();
+ byte[] targetIPByte = targetIP.getAddress();
arp.setHardwareType(ARP.HW_TYPE_ETHERNET)
.setProtocolType(EtherTypes.IPv4.shortValue())
.setHardwareAddressLength((byte) 6)
.setOpCode(ARP.REQUEST)
.setSenderHardwareAddress(getControllerMAC())
.setSenderProtocolAddress(senderIP)
- .setTargetHardwareAddress(new byte[] { (byte) 0, (byte) 0,
- (byte) 0, (byte) 0,
- (byte) 0, (byte) 0 })
- .setTargetProtocolAddress(targetIPB);
+ .setTargetHardwareAddress(
+ new byte[] { (byte) 0, (byte) 0, (byte) 0, (byte) 0, (byte) 0, (byte) 0 })
+ .setTargetProtocolAddress(targetIPByte);
Ethernet ethernet = new Ethernet();
ethernet.setSourceMACAddress(getControllerMAC())
- .setDestinationMACAddress(new byte[] { (byte) -1,
+ .setDestinationMACAddress(new byte[] {(byte) -1,
(byte) -1,
(byte) -1,
(byte) -1,
* The sender MAC is the controller's MAC
*/
protected void sendUcastARPRequest(HostNodeConnector host, Subnet subnet) {
- //Long swID = host.getnodeconnectornodeId();
- //Short portID = host.getnodeconnectorportId();
- //Node n = NodeCreator.createOFNode(swID);
- Node n = host.getnodeconnectorNode();
- if (n == null) {
- logger.error("cannot send UcastARP because cannot extract node "
- + "from HostNodeConnector: {}", host);
- return;
- }
+
NodeConnector outPort = host.getnodeConnector();
if (outPort == null) {
- logger.error("cannot send UcastARP because cannot extract "
- + "outPort from HostNodeConnector: {}", host);
+ log.error("Failed sending UcastARP because cannot extract output port from Host: {}", host);
return;
}
byte[] targetIP = host.getNetworkAddress().getAddress();
byte[] targetMAC = host.getDataLayerAddressBytes();
ARP arp = new ARP();
- arp.setHardwareType(ARP.HW_TYPE_ETHERNET).setProtocolType(
- EtherTypes.IPv4.shortValue())
- .setHardwareAddressLength((byte) 6).setProtocolAddressLength(
- (byte) 4).setOpCode(ARP.REQUEST)
- .setSenderHardwareAddress(getControllerMAC())
- .setSenderProtocolAddress(senderIP).setTargetHardwareAddress(
- targetMAC).setTargetProtocolAddress(targetIP);
+ arp.setHardwareType(ARP.HW_TYPE_ETHERNET)
+ .setProtocolType(EtherTypes.IPv4.shortValue())
+ .setHardwareAddressLength((byte) 6)
+ .setProtocolAddressLength((byte) 4)
+ .setOpCode(ARP.REQUEST)
+ .setSenderHardwareAddress(getControllerMAC())
+ .setSenderProtocolAddress(senderIP)
+ .setTargetHardwareAddress(targetMAC)
+ .setTargetProtocolAddress(targetIP);
Ethernet ethernet = new Ethernet();
ethernet.setSourceMACAddress(getControllerMAC())
- .setDestinationMACAddress(targetMAC).setEtherType(
- EtherTypes.ARP.shortValue()).setPayload(arp);
+ .setDestinationMACAddress(targetMAC)
+ .setEtherType(EtherTypes.ARP.shortValue())
+ .setPayload(arp);
RawPacket destPkt = this.dataPacketService.encodeDataPacket(ethernet);
destPkt.setOutgoingNodeConnector(outPort);
}
public void find(InetAddress networkAddress) {
- logger.debug("Received find IP {}", networkAddress);
+ log.trace("Received find IP {}", networkAddress);
Subnet subnet = null;
if (switchManager != null) {
subnet = switchManager.getSubnetByNetworkAddress(networkAddress);
}
if (subnet == null) {
- logger.debug("can't find subnet matching IP {}", networkAddress);
+ log.debug("Can't find subnet matching IP {}", networkAddress);
return;
}
- logger.debug("found subnet {}", subnet);
- // send a broadcast ARP Request to this interface
- sendBcastARPRequest(networkAddress, subnet);
+ // send a broadcast ARP Request to this IP
+ arpRequestReplyEvent.put(new ARPRequest(networkAddress, subnet), false);
}
/*
* Probe the host by sending a unicast ARP Request to the host
*/
public void probe(HostNodeConnector host) {
- logger.debug("Received probe host {}", host);
+ log.trace("Received probe host {}", host);
Subnet subnet = null;
if (switchManager != null) {
.getNetworkAddress());
}
if (subnet == null) {
- logger.debug("can't find subnet matching {}", host
- .getNetworkAddress());
+ log.debug("can't find subnet matching {}", host.getNetworkAddress());
return;
}
- sendUcastARPRequest(host, subnet);
+
+ if (connectionManager.isLocal(host.getnodeconnectorNode())){
+ log.trace("Send a ucast ARP req. to: {}", host);
+ sendUcastARPRequest(host, subnet);
+ } else {
+ log.trace("Raise a ucast ARP req. event to: {}", host);
+ arpRequestReplyEvent.put(new ARPRequest(host, subnet), false);
+ }
}
/*
* Need to discover it by sending a Broadcast ARP Request
*/
protected void handlePuntedIPPacket(IPv4 pkt, NodeConnector p) {
- InetAddress dIP = null;
- try {
- dIP = InetAddress.getByAddress(NetUtils.intToByteArray4(pkt
- .getDestinationAddress()));
- } catch (UnknownHostException e1) {
- return;
+
+ InetAddress dIP = NetUtils.getInetAddress(pkt.getDestinationAddress());
+ if (dIP == null) {
+ return;
}
Subnet subnet = null;
subnet = switchManager.getSubnetByNetworkAddress(dIP);
}
if (subnet == null) {
- logger.debug("can't find subnet matching {}, drop packet", dIP);
+ log.debug("Can't find subnet matching {}, drop packet", dIP);
return;
}
- logger.debug("Found {} matching {}", subnet, dIP);
+ log.trace("Punted IP pkt from {}, sending bcast ARP event...", dIP);
/*
- * unknown destination host, initiate ARP request
+ * unknown destination host, initiate bcast ARP request
*/
- sendBcastARPRequest(dIP, subnet);
+ arpRequestReplyEvent.put(new ARPRequest(dIP, subnet), false);
return;
}
void init() {
arpRequestors = new ConcurrentHashMap<InetAddress, Set<HostNodeConnector>>();
countDownTimers = new ConcurrentHashMap<InetAddress, Short>();
+
+ allocateCaches();
+ retrieveCaches();
+ }
+
+ @SuppressWarnings({ "unchecked", "deprecation" })
+ private void retrieveCaches() {
+ ConcurrentMap<?,?> map;
+
+ if (this.clusterContainerService == null){
+ log.error("Cluster service unavailable, can't retieve ARPHandler caches!");
+ return;
+ }
+
+ map = clusterContainerService.getCache(ARP_EVENT_CACHE_NAME);
+ if (map != null){
+ this.arpRequestReplyEvent = (ConcurrentMap<ARPEvent, Boolean>) map;
+ } else {
+ log.error("Cache allocation failed for {}", ARP_EVENT_CACHE_NAME);
+ }
}
+ @SuppressWarnings("deprecation")
+ private void allocateCaches() {
+ if (clusterContainerService == null){
+ nonClusterObjectCreate();
+ log.error("Clustering service unavailable. Allocated non-cluster caches for ARPHandler.");
+ return;
+ }
+
+ try{
+ clusterContainerService.createCache(ARP_EVENT_CACHE_NAME,
+ EnumSet.of(IClusterServices.cacheMode.NON_TRANSACTIONAL));
+ } catch (CacheConfigException e){
+ log.error("ARPHandler cache configuration invalid!");
+ } catch (CacheExistException e){
+ log.debug("ARPHandler cache exists, skipped allocation.");
+ }
+
+ }
+
+ private void nonClusterObjectCreate(){
+ arpRequestReplyEvent = new ConcurrentHashMap<ARPEvent, Boolean>();
+ }
/**
* Function called by the dependency manager when at least one
* dependency become unsatisfied or when the component is shutting
* followed by a "destroy ()" calls
*
*/
- void stop() {
+ void stop(){
+ }
+
+ void stopping() {
cancelPeriodicTimer();
}
void setSwitchManager(ISwitchManager s) {
- logger.debug("SwitchManager set");
+ log.debug("SwitchManager service set.");
this.switchManager = s;
}
void unsetSwitchManager(ISwitchManager s) {
if (this.switchManager == s) {
- logger.debug("SwitchManager removed!");
+ log.debug("SwitchManager service UNset.");
this.switchManager = null;
}
}
if (inPkt == null) {
return PacketResult.IGNORED;
}
- logger
- .trace("Received a frame of size: {}",
- inPkt.getPacketData().length);
+ log.trace("Received a frame of size: {}", inPkt.getPacketData().length);
Packet formattedPak = this.dataPacketService.decodeDataPacket(inPkt);
if (formattedPak instanceof Ethernet) {
Object nextPak = formattedPak.getPayload();
if (nextPak instanceof IPv4) {
- handlePuntedIPPacket((IPv4) nextPak, inPkt
- .getIncomingNodeConnector());
- logger.trace("Handled IP packet");
- }
- if (nextPak instanceof ARP) {
+ log.trace("Handle IP packet: {}", formattedPak);
+ handlePuntedIPPacket((IPv4) nextPak, inPkt.getIncomingNodeConnector());
+ } else if (nextPak instanceof ARP) {
+ log.trace("Handle ARP packet: {}", formattedPak);
handleARPPacket((Ethernet) formattedPak, (ARP) nextPak, inPkt
.getIncomingNodeConnector());
- logger.trace("Handled ARP packet");
}
}
return PacketResult.IGNORED;
private void startPeriodicTimer() {
this.periodicTimer = new Timer("ArpHandler Periodic Timer");
this.periodicTimer.scheduleAtFixedRate(new TimerTask() {
+ @SuppressWarnings("deprecation")
@Override
public void run() {
Set<InetAddress> targetIPs = countDownTimers.keySet();
countDownTimers.replace(t, tick);
}
}
- for (InetAddress t : expiredTargets) {
- countDownTimers.remove(t);
- // remove the requestor(s) who have been waited for the ARP
+ for (InetAddress tIP : expiredTargets) {
+ countDownTimers.remove(tIP);
+ // Remove the requestor(s) who have been waiting for the ARP
// reply from this target for more than 1sec
- arpRequestors.remove(t);
- logger.debug("{} didn't respond to ARP request", t);
+ arpRequestors.remove(tIP);
+ log.debug("ARP reply was not received from {}", tIP);
+ }
+
+ // Clean up ARP event cache
+ try {
+ if (clusterContainerService.amICoordinator() && ! arpRequestReplyEvent.isEmpty()){
+ arpRequestReplyEvent.clear();
+ }
+ } catch (Exception e){
+ log.warn("ARPHandler: A cluster member failed to clear event cache.");
}
}
}, 0, 1000);
}
countDownTimers.remove(sourceIP);
for (HostNodeConnector host : hosts) {
- logger.debug(
- "Sending ARP Reply with src {}/{}, target {}/{}",
- new Object[] { sourceMAC, sourceIP,
- host.getDataLayerAddressBytes(),
- host.getNetworkAddress() });
- sendARPReply(host.getnodeConnector(), sourceMAC, sourceIP,
- host.getDataLayerAddressBytes(), host.getNetworkAddress());
+ log.trace("Sending ARP Reply with src {}/{}, target {}/{}",
+ new Object[] { sourceMAC, sourceIP, host.getDataLayerAddressBytes(), host.getNetworkAddress() });
+
+ if (connectionManager.isLocal(host.getnodeconnectorNode())){
+ sendARPReply(host.getnodeConnector(),
+ sourceMAC,
+ sourceIP,
+ host.getDataLayerAddressBytes(),
+ host.getNetworkAddress());
+ } else {
+ arpRequestReplyEvent.put(
+ new ARPReply(
+ host.getnodeConnector(),
+ sourceIP,
+ sourceMAC,
+ host.getNetworkAddress(),
+ host.getDataLayerAddressBytes()), false);
+ }
+ }
+ }
+
+
+ @Override
+ public void entryUpdated(ARPEvent key, Boolean new_value, String cacheName, boolean originLocal) {
+ if (key instanceof ARPRequest) {
+ ARPRequest req = (ARPRequest) key;
+ // If broadcast request
+ if (req.getHost() == null) {
+ sendBcastARPRequest(req.getTargetIP(), req.getSubnet());
+
+ //If unicast and local, send reply
+ } else if (connectionManager.isLocal(req.getHost().getnodeconnectorNode())) {
+ sendUcastARPRequest(req.getHost(), req.getSubnet());
+ }
+ } else if (key instanceof ARPReply) {
+ ARPReply rep = (ARPReply) key;
+ // New reply received by controller, notify all awaiting requestors across the cluster
+ if (new_value) {
+ generateAndSendReply(rep.getTargetIP(), rep.getTargetMac());
+
+ // Otherwise, a specific reply. If local, send out.
+ } else if (connectionManager.isLocal(rep.getPort().getNode())) {
+ sendARPReply(rep.getPort(),
+ rep.getSourceMac(),
+ rep.getSourceIP(),
+ rep.getTargetMac(),
+ rep.getTargetIP());
+ }
}
}
+
+ @Override
+ public void entryCreated(ARPEvent key, String cacheName, boolean originLocal) {
+ // nothing to do
+ }
+ @Override
+ public void entryDeleted(ARPEvent key, String cacheName, boolean originLocal) {
+ // nothing to do
+ }
}
Code Review / controller.git / blobdiff