2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.groupbasedpolicy.renderer.ofoverlay.arp;
11 import static com.google.common.base.Preconditions.checkNotNull;
13 import java.util.ArrayList;
14 import java.util.List;
15 import java.util.concurrent.Future;
17 import javax.annotation.Nullable;
19 import org.apache.commons.lang3.tuple.ImmutablePair;
20 import org.apache.commons.lang3.tuple.Pair;
21 import org.apache.commons.net.util.SubnetUtils;
22 import org.apache.commons.net.util.SubnetUtils.SubnetInfo;
23 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
24 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
25 import org.opendaylight.controller.md.sal.binding.api.ReadTransaction;
26 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
27 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
28 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;
29 import org.opendaylight.groupbasedpolicy.util.IidFactory;
30 import org.opendaylight.openflowplugin.api.OFConstants;
31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.MacAddress;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
36 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowId;
37 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table;
38 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.TableKey;
39 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
40 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowBuilder;
41 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowKey;
42 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.AddFlowInputBuilder;
43 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.AddFlowOutput;
44 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.RemoveFlowInput;
45 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.RemoveFlowInputBuilder;
46 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.service.rev130819.SalFlowService;
47 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowModFlags;
48 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.FlowRef;
49 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.InstructionsBuilder;
50 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.Match;
51 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.MatchBuilder;
52 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.ApplyActionsCaseBuilder;
53 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.apply.actions._case.ApplyActions;
54 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.instruction.apply.actions._case.ApplyActionsBuilder;
55 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.Instruction;
56 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionBuilder;
57 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.ContextId;
58 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.L2BridgeDomainId;
59 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.L2ContextId;
60 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.L2FloodDomainId;
61 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.NetworkDomainId;
62 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.SubnetId;
63 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.TenantId;
64 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.Endpoint;
65 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointBuilder;
66 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointKey;
67 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointL3;
68 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointL3Builder;
69 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointL3Key;
70 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayContext;
71 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayContextBuilder;
72 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayL3Context;
73 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayNodeConfig;
74 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.nodes.node.ExternalInterfaces;
75 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.forwarding.context.L2BridgeDomain;
76 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.forwarding.context.L2FloodDomain;
77 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.forwarding.context.Subnet;
78 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
79 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
80 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
81 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
82 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
83 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
84 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
85 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
86 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.EthernetMatch;
87 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.ArpMatch;
88 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketProcessingListener;
89 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketProcessingService;
90 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketReceived;
91 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
92 import org.opendaylight.yangtools.yang.common.RpcResult;
93 import org.slf4j.Logger;
94 import org.slf4j.LoggerFactory;
96 import com.google.common.base.Optional;
97 import com.google.common.collect.ArrayListMultimap;
98 import com.google.common.collect.HashMultimap;
99 import com.google.common.collect.ImmutableList;
100 import com.google.common.collect.ImmutableSetMultimap;
101 import com.google.common.collect.ListMultimap;
102 import com.google.common.collect.Multimaps;
103 import com.google.common.collect.SetMultimap;
104 import com.google.common.util.concurrent.FutureCallback;
105 import com.google.common.util.concurrent.Futures;
106 import com.google.common.util.concurrent.JdkFutureAdapters;
107 import com.google.common.util.concurrent.ListenableFuture;
109 public class ArpTasker implements PacketProcessingListener {
111 private static final Logger LOG = LoggerFactory.getLogger(ArpTasker.class);
112 private static final short TABEL_FOR_ARP_FLOW = 0;
113 private static final String ARP_REPLY_TO_CONTROLLER_FLOW_NAME = "arpReplyToController";
114 private static final int ARP_REPLY_TO_CONTROLLER_FLOW_PRIORITY = 10000;
115 private static final Instruction SEND_TO_CONTROLLER_INSTRUCTION;
116 private final ArpSender arpSender;
117 private final SalFlowService flowService;
118 private final DataBroker dataProvider;
119 private final ListMultimap<String, Pair<RemoveFlowInput, EndpointL3Key>> requestInfoByKey = Multimaps.synchronizedListMultimap(ArrayListMultimap.<String, Pair<RemoveFlowInput, EndpointL3Key>>create());
122 ApplyActions applyActions = new ApplyActionsBuilder().setAction(
123 ImmutableList.of(ArpFlowFactory.createSendToControllerAction(0))).build();
124 SEND_TO_CONTROLLER_INSTRUCTION = new InstructionBuilder().setOrder(0)
125 .setInstruction(new ApplyActionsCaseBuilder().setApplyActions(applyActions).build())
129 public ArpTasker(DataBroker dataProvider, PacketProcessingService packetProcessingService,
130 SalFlowService flowService) {
131 this.dataProvider = checkNotNull(dataProvider);
132 this.arpSender = new ArpSender(packetProcessingService);
133 this.flowService = flowService;
137 public void onPacketReceived(PacketReceived potentialArp) {
140 arp = ArpResolverUtils.getArpFrom(potentialArp);
141 } catch (Exception e) {
143 "Failed to decode potential ARP packet. This could occur when other than ARP packet was received.",
147 if (arp.getOperation() != ArpOperation.REPLY.intValue()) {
148 LOG.trace("ARP packet is not REPLY.");
151 if (LOG.isTraceEnabled()) {
152 LOG.trace("ARP REPLY received - {}", ArpUtils.getArpToStringFormat(arp));
154 NodeKey nodeKey = potentialArp.getIngress().getValue().firstKeyOf(Node.class, NodeKey.class);
155 if (nodeKey == null) {
156 LOG.info("Unknown source node of ARP packet: {}", potentialArp);
159 Ipv4Address spa = ArpUtils.bytesToIp(arp.getSenderProtocolAddress());
160 MacAddress sha = ArpUtils.bytesToMac(arp.getSenderHardwareAddress());
161 List<Pair<RemoveFlowInput, EndpointL3Key>> removeFlowInputsAndL3EpKeys = requestInfoByKey.get(createKey(nodeKey.getId(), spa));
162 for (Pair<RemoveFlowInput, EndpointL3Key> removeFlowInputAndL3EpKey : removeFlowInputsAndL3EpKeys) {
163 flowService.removeFlow(removeFlowInputAndL3EpKey.getLeft());
165 // each L3EpKey on right-side part of Pair is same
166 final EndpointL3Key l3EpKey = removeFlowInputsAndL3EpKeys.get(0).getRight();
167 ReadWriteTransaction rwTx = dataProvider.newReadWriteTransaction();
168 InstanceIdentifier<EndpointL3> l3EpIid = IidFactory.l3EndpointIid(l3EpKey.getL3Context(),
169 l3EpKey.getIpAddress());
170 Optional<EndpointL3> potentialL3Ep = DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL, l3EpIid, rwTx);
171 if (!potentialL3Ep.isPresent()) {
172 LOG.info("L3 endpoint {} where MAC should be added does not exist anymore.", l3EpKey);
176 final EndpointL3Builder updatedL3EpBuilder = new EndpointL3Builder(potentialL3Ep.get()).setMacAddress(sha)
177 .setTimestamp(System.currentTimeMillis());
178 EndpointL3 updatedL3Ep = updatedL3EpBuilder.build();
179 L2BridgeDomainId l2BdId = resolveL2BridgeDomainId(updatedL3Ep, rwTx);
180 if (l2BdId != null) {
181 updatedL3Ep = updatedL3EpBuilder.setL2Context(l2BdId).build();
182 EndpointBuilder newEpBuilder = new EndpointBuilder(updatedL3Ep).setKey(new EndpointKey(l2BdId, sha));
183 OfOverlayL3Context augmentation = updatedL3Ep.getAugmentation(OfOverlayL3Context.class);
184 if (augmentation != null) {
185 newEpBuilder.addAugmentation(OfOverlayContext.class, new OfOverlayContextBuilder(augmentation).build());
187 Endpoint newEp = newEpBuilder.build();
188 rwTx.put(LogicalDatastoreType.OPERATIONAL, IidFactory.endpointIid(l2BdId, sha), newEp);
189 LOG.trace("Endpoint was created {}", newEp);
191 rwTx.put(LogicalDatastoreType.OPERATIONAL, l3EpIid, updatedL3Ep);
192 LOG.trace("MAC was added to L3 endpoint {}", updatedL3Ep);
196 private @Nullable L2BridgeDomainId resolveL2BridgeDomainId(EndpointL3 l3Ep, ReadTransaction rTx) {
197 TenantId tenantId = l3Ep.getTenant();
198 Subnet subnetOfL3Ep = readSubnet(l3Ep, rTx);
199 if (subnetOfL3Ep == null) {
202 ContextId parentOfSubnet = subnetOfL3Ep.getParent();
203 if (parentOfSubnet == null) {
206 L2ContextId l2ContextId = new L2ContextId(parentOfSubnet);
207 Optional<L2BridgeDomain> potentialL2Bd = DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL,
208 IidFactory.l2BridgeDomainIid(tenantId, new L2BridgeDomainId(l2ContextId)), rTx);
209 if (potentialL2Bd.isPresent()) {
210 return potentialL2Bd.get().getId();
212 Optional<L2FloodDomain> potentialL2Fd = DataStoreHelper.readFromDs(LogicalDatastoreType.OPERATIONAL,
213 IidFactory.l2FloodDomainIid(tenantId, new L2FloodDomainId(l2ContextId)), rTx);
214 if (!potentialL2Fd.isPresent()) {
217 return potentialL2Fd.get().getParent();
221 * Uses ARP to get MAC for the given L3 endpoint. Tries to find MAC for IP from
222 * {@link EndpointL3#getKey()}.<br>
223 * {@link EndpointL3#getNetworkContainment()} has to point to a {@link Subnet}.<br>
224 * ARP Request is sent from all node connectors obtaining from
225 * {@link OfOverlayNodeConfig#getExternalInterfaces()}<br>
226 * MAC address obtained from ARP reply is added to the given L3 endpoint (if still exits).<br>
227 * Also an {@link Endpoint} is created based on MAC If the subnet from network containment point
228 * to {@link L2BridgeDomain} directly or throught {@link L2FloodDomain}.
230 * @param l3Ep the L3 endpoint which needs to have an MAC address
232 public void addMacForL3EpAndCreateEp(final EndpointL3 l3Ep) {
233 final Ipv4Address tpa = getIPv4Addresses(l3Ep);
235 LOG.debug("L3 endpoint {} does not contain IPv4 address.", l3Ep.getKey());
238 ReadOnlyTransaction rTx = dataProvider.newReadOnlyTransaction();
239 final SetMultimap<Node, Pair<InstanceIdentifier<NodeConnector>, MacAddress>> extNcWithMacByNode = readNodesWithExternalIfaces(rTx);
240 if (extNcWithMacByNode.isEmpty()) {
241 LOG.debug("No node with external interface was found.");
245 final Ipv4Address senderIpAddress = createSenderIpAddress(l3Ep, rTx);
246 if (senderIpAddress == null) {
247 LOG.warn("Cannot create sender IPv4 address for L3 endpoint {}", l3Ep);
253 for (final Node node : extNcWithMacByNode.keySet()) {
254 final InstanceIdentifier<Node> nodeIid = InstanceIdentifier.builder(Nodes.class)
255 .child(Node.class, node.getKey())
257 final NodeRef nodeRef = new NodeRef(nodeIid);
258 List<ListenableFuture<RpcResult<AddFlowOutput>>> arpFlowResultFutures = new ArrayList<>();
259 List<Pair<RemoveFlowInput, EndpointL3Key>> flowsForRemove = new ArrayList<>();
260 for (final Pair<InstanceIdentifier<NodeConnector>, MacAddress> extNcIidAndMac : extNcWithMacByNode.get(node)) {
261 final ArpMessageAddress senderAddress = new ArpMessageAddress(extNcIidAndMac.getRight(),
263 NodeConnectorId ncId = extNcIidAndMac.getLeft().firstKeyOf(NodeConnector.class, NodeConnectorKey.class).getId();
264 final Flow arpReplyToControllerFlow = createArpReplyToControllerFlow(senderAddress, tpa, ncId);
265 flowsForRemove.add(new ImmutablePair<>(new RemoveFlowInputBuilder(arpReplyToControllerFlow).setNode(
266 nodeRef).build(), l3Ep.getKey()));
267 final InstanceIdentifier<Flow> flowIid = createFlowIid(arpReplyToControllerFlow, nodeIid);
268 Future<RpcResult<AddFlowOutput>> futureAddFlowResult = flowService.addFlow(new AddFlowInputBuilder(
269 arpReplyToControllerFlow).setFlowRef(new FlowRef(flowIid)).setNode(nodeRef).build());
270 arpFlowResultFutures.add(JdkFutureAdapters.listenInPoolThread(futureAddFlowResult));
272 requestInfoByKey.putAll(createKey(node.getId(), tpa), flowsForRemove);
273 ListenableFuture<List<RpcResult<AddFlowOutput>>> futureArpFlowResults = Futures.allAsList(arpFlowResultFutures);
274 Futures.addCallback(futureArpFlowResults, new FutureCallback<List<RpcResult<AddFlowOutput>>>() {
277 public void onSuccess(List<RpcResult<AddFlowOutput>> result) {
278 for (RpcResult<AddFlowOutput> addFlowResult : result) {
279 if (!addFlowResult.isSuccessful()) {
280 LOG.warn("An ARP Reply to Controller flow was not created on node {} \nErrors: {}",
281 node.getId().getValue(), addFlowResult.getErrors());
285 LOG.debug("ARP Reply to Controller flows were created on node {}", node.getId().getValue());
286 for (final Pair<InstanceIdentifier<NodeConnector>, MacAddress> extNcIidAndMac : extNcWithMacByNode.get(node)) {
287 final ArpMessageAddress senderAddress = new ArpMessageAddress(extNcIidAndMac.getRight(),
289 ListenableFuture<RpcResult<Void>> futureSendArpResult = arpSender.sendArp(senderAddress, tpa,
290 extNcIidAndMac.getLeft());
291 Futures.addCallback(futureSendArpResult, logResult(tpa, extNcIidAndMac.getLeft()));
296 public void onFailure(Throwable t) {
298 "Illegal state - Installation of ARP flows on node {} failed. Node can contain just some ARP flows.",
305 private static @Nullable Ipv4Address getIPv4Addresses(EndpointL3 l3ep) {
306 IpAddress ipAddress = l3ep.getKey().getIpAddress();
307 if (ipAddress.getIpv4Address() == null) {
310 return ipAddress.getIpv4Address();
313 private SetMultimap<Node, Pair<InstanceIdentifier<NodeConnector>, MacAddress>> readNodesWithExternalIfaces(
314 ReadTransaction rTx) {
315 Optional<Nodes> potentialNodes = DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION,
316 InstanceIdentifier.builder(Nodes.class).build(), rTx);
317 if (!potentialNodes.isPresent() || potentialNodes.get().getNode() == null) {
318 return ImmutableSetMultimap.of();
320 List<Node> nodes = potentialNodes.get().getNode();
321 SetMultimap<Node, Pair<InstanceIdentifier<NodeConnector>, MacAddress>> extIfacesByNode = HashMultimap.create();
322 for (Node node : nodes) {
323 OfOverlayNodeConfig ofOverlayNode = node.getAugmentation(OfOverlayNodeConfig.class);
324 if (ofOverlayNode != null) {
325 List<ExternalInterfaces> externalIfaces = ofOverlayNode.getExternalInterfaces();
326 if (externalIfaces != null) {
327 for (ExternalInterfaces extIface : externalIfaces) {
328 NodeConnectorId externalNc = extIface.getNodeConnectorId();
329 InstanceIdentifier<NodeConnector> extNcIid = InstanceIdentifier.builder(Nodes.class)
330 .child(Node.class, node.getKey())
331 .child(NodeConnector.class, new NodeConnectorKey(externalNc))
333 Optional<NodeConnector> potentialExtNcFromOper = DataStoreHelper.readFromDs(
334 LogicalDatastoreType.OPERATIONAL, extNcIid, rTx);
335 if (!potentialExtNcFromOper.isPresent()) {
336 LOG.debug("Node connector {} does not exit in OPER DS. Node from CONF: {}",
337 externalNc.getValue(), node);
340 FlowCapableNodeConnector externalFcNc = potentialExtNcFromOper.get().getAugmentation(
341 FlowCapableNodeConnector.class);
342 if (externalFcNc == null || externalFcNc.getHardwareAddress() == null) {
343 LOG.debug("Hardware address does not exist on node connector {}", externalNc.getValue());
344 LOG.trace("Node connector from OPER DS {}", potentialExtNcFromOper.get());
347 extIfacesByNode.put(node, new ImmutablePair<>(extNcIid, externalFcNc.getHardwareAddress()));
352 return extIfacesByNode;
355 private @Nullable Ipv4Address createSenderIpAddress(EndpointL3 l3Ep, ReadTransaction rTx) {
356 Subnet subnetOfL3Ep = readSubnet(l3Ep, rTx);
357 if (subnetOfL3Ep == null) {
360 SubnetInfo subnetInfo = new SubnetUtils(subnetOfL3Ep.getIpPrefix().getIpv4Prefix().getValue()).getInfo();
361 String senderIp = subnetInfo.getHighAddress();
362 if (senderIp.equals(l3Ep.getKey().getIpAddress().getIpv4Address().getValue())) {
363 senderIp = subnetInfo.getLowAddress();
365 return new Ipv4Address(senderIp);
368 private @Nullable Subnet readSubnet(EndpointL3 l3Ep, ReadTransaction rTx) {
369 NetworkDomainId l3EpNetworkContainment = l3Ep.getNetworkContainment();
370 if (l3EpNetworkContainment == null) {
371 LOG.debug("L3 endpoint {} does not contain network containment.", l3Ep.getKey());
374 if (l3Ep.getTenant() == null) {
375 LOG.debug("L3 endpoint {} does not contain tenat.", l3Ep.getKey());
378 Optional<Subnet> potentialSubnet = DataStoreHelper.readFromDs(LogicalDatastoreType.CONFIGURATION,
379 IidFactory.subnetIid(l3Ep.getTenant(), new SubnetId(l3EpNetworkContainment)), rTx);
380 if (!potentialSubnet.isPresent()) {
382 "Network containment {} of L3 endpoint {} does not point to a subnet or the subnet does not exist.",
383 l3EpNetworkContainment.getValue(), l3Ep.getKey());
386 return potentialSubnet.get();
389 private Flow createArpReplyToControllerFlow(ArpMessageAddress senderAddress, Ipv4Address ipForRequestedMac, NodeConnectorId inPort) {
390 checkNotNull(senderAddress);
391 checkNotNull(ipForRequestedMac);
392 FlowBuilder arpFlow = new FlowBuilder().setTableId(TABEL_FOR_ARP_FLOW)
393 .setFlowName(ARP_REPLY_TO_CONTROLLER_FLOW_NAME)
394 .setPriority(ARP_REPLY_TO_CONTROLLER_FLOW_PRIORITY)
395 .setBufferId(OFConstants.OFP_NO_BUFFER)
398 .setFlags(new FlowModFlags(false, false, false, false, false));
399 EthernetMatch ethernetMatch = ArpFlowFactory.createEthernetMatch();
400 ArpMatch arpMatch = ArpFlowFactory.createArpMatch(senderAddress, ipForRequestedMac);
401 Match match = new MatchBuilder().setEthernetMatch(ethernetMatch).setLayer3Match(arpMatch).setInPort(inPort).build();
402 arpFlow.setMatch(match);
403 arpFlow.setInstructions(new InstructionsBuilder().setInstruction(
404 ImmutableList.of(SEND_TO_CONTROLLER_INSTRUCTION)).build());
405 arpFlow.setId(createFlowId(ethernetMatch, arpMatch));
406 return arpFlow.build();
409 private FlowId createFlowId(EthernetMatch ethernetMatch, ArpMatch arpMatch) {
410 StringBuilder sb = new StringBuilder();
411 sb.append(ARP_REPLY_TO_CONTROLLER_FLOW_NAME);
412 sb.append("|").append(ethernetMatch);
413 sb.append("|").append(arpMatch);
414 return new FlowId(sb.toString());
417 private static InstanceIdentifier<Flow> createFlowIid(Flow flow, InstanceIdentifier<Node> nodeIid) {
418 return nodeIid.builder()
419 .augmentation(FlowCapableNode.class)
420 .child(Table.class, new TableKey(flow.getTableId()))
421 .child(Flow.class, new FlowKey(flow.getId()))
425 private FutureCallback<RpcResult<Void>> logResult(final Ipv4Address tpa,
426 final InstanceIdentifier<NodeConnector> ncIid) {
427 return new FutureCallback<RpcResult<Void>>() {
430 public void onSuccess(RpcResult<Void> result) {
431 LOG.debug("ARP Request for IP {} was sent from {}.", tpa.getValue(), ncIid);
435 public void onFailure(Throwable t) {
436 LOG.warn("ARP Request for IP {} was NOT sent from {}.", tpa.getValue(), ncIid);
441 private static String createKey(NodeId node, Ipv4Address ip) {
442 return node.getValue() + "_" + "_" + ip.getValue();