neutron-mapper/src/main/java/org/opendaylight/groupbasedpolicy/neutron/mapper/mapping/NeutronPortAware.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.groupbasedpolicy.neutron.mapper.mapping;
   9
  10 import static com.google.common.base.Preconditions.checkNotNull;
  11
  12 import java.util.ArrayList;
  13 import java.util.Collections;
  14 import java.util.List;
  15 import java.util.Set;
  16
  17 import javax.annotation.Nullable;
  18
  19 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  20 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
  21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  22 import org.opendaylight.groupbasedpolicy.neutron.gbp.util.NeutronGbpIidFactory;
  23 import org.opendaylight.groupbasedpolicy.neutron.mapper.EndpointRegistrator;
  24 import org.opendaylight.groupbasedpolicy.neutron.mapper.infrastructure.NetworkClient;
  25 import org.opendaylight.groupbasedpolicy.neutron.mapper.infrastructure.NetworkService;
  26 import org.opendaylight.groupbasedpolicy.neutron.mapper.util.PortUtils;
  27 import org.opendaylight.groupbasedpolicy.neutron.mapper.util.SubnetUtils;
  28 import org.opendaylight.groupbasedpolicy.util.DataStoreHelper;
  29 import org.opendaylight.groupbasedpolicy.util.IidFactory;
  30 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev100924.MacAddress;
  31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.EndpointGroupId;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.L2BridgeDomainId;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.L2FloodDomainId;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.L3ContextId;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.SubnetId;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.TenantId;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.common.rev140421.UniqueId;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.RegisterEndpointInput;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.RegisterEndpointInputBuilder;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.UnregisterEndpointInput;
  42 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.UnregisterEndpointInputBuilder;
  43 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoint.fields.L3Address;
  44 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoint.fields.L3AddressBuilder;
  45 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.endpoints.EndpointKey;
  46 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.unregister.endpoint.input.L2;
  47 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.unregister.endpoint.input.L2Builder;
  48 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.unregister.endpoint.input.L3;
  49 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.unregister.endpoint.input.L3Builder;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.gbp.by.neutron.mappings.endpoints.by.ports.EndpointByPort;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.gbp.mapper.rev150513.mappings.neutron.by.gbp.mappings.ports.by.endpoints.PortByEndpoint;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.forwarding.context.L2BridgeDomain;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.forwarding.context.L2BridgeDomainBuilder;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.port.attributes.FixedIps;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.Ports;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;
  59 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  60 import org.slf4j.Logger;
  61 import org.slf4j.LoggerFactory;
  62
  63 import com.google.common.base.Optional;
  64 import com.google.common.collect.ImmutableList;
  65
  66 public class NeutronPortAware implements NeutronAware<Port> {
  67
  68     private static final Logger LOG = LoggerFactory.getLogger(NeutronPortAware.class);
  69     public static final InstanceIdentifier<Port> PORT_WILDCARD_IID =
  70             InstanceIdentifier.builder(Neutron.class).child(Ports.class).child(Port.class).build();
  71     private final DataBroker dataProvider;
  72     private final EndpointRegistrator epRegistrator;
  73
  74     public NeutronPortAware(DataBroker dataProvider, EndpointRegistrator epRegistrator) {
  75         this.dataProvider = checkNotNull(dataProvider);
  76         this.epRegistrator = checkNotNull(epRegistrator);
  77     }
  78
  79     @Override
  80     public void onCreated(Port port, Neutron neutron) {
  81         LOG.trace("created port - {}", port);
  82         if (PortUtils.isRouterInterfacePort(port)) {
  83             LOG.trace("Port is router interface port: {}", port.getUuid().getValue());
  84             // router interface port can have only one IP
  85             Optional<FixedIps> potentialPortIpWithSubnet = PortUtils.resolveFirstFixedIps(port);
  86             if (!potentialPortIpWithSubnet.isPresent()) {
  87                 LOG.warn("Illegal state - router interface port does not contain fixed IPs {}",
  88                         port);
  89                 return;
  90             }
  91             FixedIps portIpWithSubnet = potentialPortIpWithSubnet.get();
  92             L3ContextId routerL3Context = new L3ContextId(port.getDeviceId());
  93             // change L3Context for all EPs with same subnet as router port
  94             changeL3ContextForEpsInSubnet(portIpWithSubnet.getSubnetId(), neutron.getPorts(), routerL3Context);
  95             // set L3Context as parent for bridge domain which is parent of subnet
  96             TenantId tenantId = new TenantId(port.getTenantId().getValue());
  97             Optional<Subnet> potentialRouterPortSubnet = SubnetUtils.findSubnet(portIpWithSubnet.getSubnetId(), neutron.getSubnets());
  98             if (!potentialRouterPortSubnet.isPresent()) {
  99                 LOG.warn("Illegal state - router interface port is in subnet which does not exist. {}",
 100                         port);
 101                 return;
 102             }
 103             ReadWriteTransaction rwTx = dataProvider.newReadWriteTransaction();
 104             Subnet routerPortSubnet = potentialRouterPortSubnet.get();
 105             L2BridgeDomainId l2BdId = new L2BridgeDomainId(routerPortSubnet.getNetworkId().getValue());
 106             L2BridgeDomain l2Bd = new L2BridgeDomainBuilder().setId(l2BdId).setParent(routerL3Context).build();
 107             rwTx.merge(LogicalDatastoreType.CONFIGURATION, IidFactory.l2BridgeDomainIid(tenantId, l2BdId), l2Bd);
 108             // set virtual router IP for subnet
 109             org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.forwarding.context.Subnet subnet =
 110                     NeutronSubnetAware.createSubnet(routerPortSubnet, portIpWithSubnet.getIpAddress());
 111             rwTx.merge(LogicalDatastoreType.CONFIGURATION, IidFactory.subnetIid(tenantId, subnet.getId()), subnet);
 112             DataStoreHelper.submitToDs(rwTx);
 113         } else if (PortUtils.isDhcpPort(port)) {
 114             // process as normal port but put it to DHCP group
 115             LOG.trace("Port is DHCP port: {}", port.getUuid().getValue());
 116             Optional<FixedIps> firstFixedIps = PortUtils.resolveFirstFixedIps(port);
 117             if (!firstFixedIps.isPresent()) {
 118                 LOG.warn("DHCP port does not have an IP address. {}", port);
 119                 return;
 120             }
 121             RegisterEndpointInputBuilder epInBuilder = createBasicEndpointInputBuilder(port);
 122             // endpoint has only one network containment therefore only first IP is used
 123             FixedIps ipWithSubnet = firstFixedIps.get();
 124             epInBuilder.setNetworkContainment(new SubnetId(ipWithSubnet.getSubnetId().getValue()));
 125             L3Address l3Address = new L3AddressBuilder().setL3Context(new L3ContextId(port.getNetworkId().getValue()))
 126                 .setIpAddress(ipWithSubnet.getIpAddress())
 127                 .build();
 128             epInBuilder.setL3Address(ImmutableList.of(l3Address));
 129             List<EndpointGroupId> epgsFromSecGroups = resolveEpgIdsFromSecGroups(port.getSecurityGroups());
 130             epgsFromSecGroups.add(NetworkService.EPG_ID);
 131             epInBuilder.setEndpointGroups(epgsFromSecGroups);
 132             registerEndpointAndStoreMapping(epInBuilder.build(), port);
 133         } else if (PortUtils.isNormalPort(port)) {
 134             LOG.trace("Port is normal port: {}", port.getUuid().getValue());
 135             RegisterEndpointInputBuilder epInBuilder = createBasicEndpointInputBuilder(port);
 136             Optional<FixedIps> firstFixedIps = PortUtils.resolveFirstFixedIps(port);
 137             if (firstFixedIps.isPresent()) {
 138                 // endpoint has only one network containment therefore only first IP is used
 139                 FixedIps ipWithSubnet = firstFixedIps.get();
 140                 epInBuilder.setNetworkContainment(new SubnetId(ipWithSubnet.getSubnetId().getValue()));
 141                 L3Address l3Address = resolveL3AddressFromPort(port, ipWithSubnet, neutron);
 142                 epInBuilder.setL3Address(ImmutableList.of(l3Address));
 143             } else {
 144                 epInBuilder.setNetworkContainment(new L2FloodDomainId(port.getNetworkId().getValue()));
 145             }
 146             List<EndpointGroupId> epgsFromSecGroups = resolveEpgIdsFromSecGroups(port.getSecurityGroups());
 147             epgsFromSecGroups.add(NetworkClient.EPG_ID);
 148             epInBuilder.setEndpointGroups(epgsFromSecGroups);
 149             registerEndpointAndStoreMapping(epInBuilder.build(), port);
 150         } else if (PortUtils.isRouterGatewayPort(port)) {
 151             // do nothing because actual trigger is attaching of port to router
 152             LOG.trace("Port is router gateway port: {}", port.getUuid().getValue());
 153         } else if (PortUtils.isFloatingIpPort(port)) {
 154             // do nothing because trigger is floating IP
 155             LOG.trace("Port is floating ip: {}", port.getUuid().getValue());
 156         } else {
 157             LOG.warn("Unknown port: {}", port);
 158         }
 159     }
 160
 161     private void changeL3ContextForEpsInSubnet(Uuid subnetUuid, Ports ports, L3ContextId newl3Context) {
 162         Set<Port> portsInSameSubnet = PortUtils.findPortsBySubnet(subnetUuid, ports);
 163         for (Port portInSameSubnet : portsInSameSubnet) {
 164             if (PortUtils.isNormalPort(portInSameSubnet) || PortUtils.isDhcpPort(portInSameSubnet)) {
 165                 // endpoints are created only from neutron normal port or DHCP port
 166                 Optional<FixedIps> firstFixedIps = PortUtils.resolveFirstFixedIps(portInSameSubnet);
 167                 if (firstFixedIps.isPresent()) {
 168                     // endpoint has only one network containment therefore only first IP is used
 169                     FixedIps ipWithSubnet = firstFixedIps.get();
 170                     RegisterEndpointInputBuilder epInBuilder = createBasicEndpointInputBuilder(portInSameSubnet);
 171                     epInBuilder.setNetworkContainment(new SubnetId(ipWithSubnet.getSubnetId().getValue()));
 172                     L3Address l3Address = new L3AddressBuilder().setL3Context(newl3Context)
 173                         .setIpAddress(ipWithSubnet.getIpAddress())
 174                         .build();
 175                     epInBuilder.setL3Address(ImmutableList.of(l3Address));
 176                     List<EndpointGroupId> epgsFromSecGroups =
 177                             resolveEpgIdsFromSecGroups(portInSameSubnet.getSecurityGroups());
 178                     epgsFromSecGroups.add(NetworkClient.EPG_ID);
 179                     epRegistrator.registerEndpoint(epInBuilder.build());
 180                     // unregister L3EP
 181                     L3ContextId oldL3Context = new L3ContextId(portInSameSubnet.getNetworkId().getValue());
 182                     L3 l3 = new L3Builder().setL3Context(oldL3Context).setIpAddress(ipWithSubnet.getIpAddress())
 183                         .build();
 184                     UnregisterEndpointInput epUnreg = new UnregisterEndpointInputBuilder().setL3(ImmutableList.of(l3)).build();
 185                     epRegistrator.unregisterEndpoint(epUnreg);
 186                 }
 187             }
 188         }
 189     }
 190
 191     private static RegisterEndpointInputBuilder createBasicEndpointInputBuilder(Port port) {
 192         return new RegisterEndpointInputBuilder().setL2Context(new L2BridgeDomainId(port.getNetworkId().getValue()))
 193             .setMacAddress(new MacAddress(port.getMacAddress()))
 194             .setTenant(new TenantId(port.getTenantId().getValue()))
 195             .setTimestamp(System.currentTimeMillis());
 196     }
 197
 198     private static List<EndpointGroupId> resolveEpgIdsFromSecGroups(@Nullable List<Uuid> securityGroups) {
 199         List<EndpointGroupId> epgIds = new ArrayList<>();
 200         if ((securityGroups == null || securityGroups.isEmpty())) {
 201             return epgIds;
 202         }
 203         for (Uuid secGrp : securityGroups) {
 204             epgIds.add(new EndpointGroupId(secGrp.getValue()));
 205         }
 206         return epgIds;
 207     }
 208
 209     private void registerEndpointAndStoreMapping(RegisterEndpointInput regEpInput, Port port) {
 210         boolean isRegisteredEndpoint = epRegistrator.registerEndpoint(regEpInput);
 211         if (isRegisteredEndpoint) {
 212             ReadWriteTransaction rwTx = dataProvider.newReadWriteTransaction();
 213             UniqueId portId = new UniqueId(port.getUuid().getValue());
 214             EndpointKey epKey = new EndpointKey(new L2BridgeDomainId(port.getNetworkId().getValue()),
 215                     new MacAddress(port.getMacAddress()));
 216             LOG.trace("Adding Port-Endpoint mapping for port {} (device owner {}) and endpoint {}",
 217                     port.getUuid().getValue(), port.getDeviceOwner(), epKey);
 218             EndpointByPort endpointByPort = MappingFactory.createEndpointByPort(epKey, portId);
 219             rwTx.put(LogicalDatastoreType.OPERATIONAL, NeutronGbpIidFactory.endpointByPortIid(portId), endpointByPort,
 220                     true);
 221             PortByEndpoint portByEndpoint = MappingFactory.createPortByEndpoint(portId, epKey);
 222             rwTx.put(LogicalDatastoreType.OPERATIONAL,
 223                     NeutronGbpIidFactory.portByEndpointIid(epKey.getL2Context(), epKey.getMacAddress()), portByEndpoint,
 224                     true);
 225             DataStoreHelper.submitToDs(rwTx);
 226         }
 227     }
 228
 229     @Override
 230     public void onUpdated(Port oldPort, Port newPort, Neutron oldNeutron, Neutron newNeutron) {
 231         LOG.trace("updated port - OLD: {}\nNEW: {}", oldPort, newPort);
 232         onDeleted(oldPort, oldNeutron, newNeutron);
 233         onCreated(newPort, newNeutron);
 234     }
 235
 236     @Override
 237     public void onDeleted(Port port, Neutron oldNeutron, Neutron newNeutron) {
 238         LOG.trace("deleted port - {}", port);
 239         if (PortUtils.isRouterInterfacePort(port)) {
 240             LOG.trace("Port is router interface port: {}", port.getUuid().getValue());
 241             // router interface port can have only one IP
 242             Optional<FixedIps> potentialPortIpWithSubnet = PortUtils.resolveFirstFixedIps(port);
 243             if (!potentialPortIpWithSubnet.isPresent()) {
 244                 LOG.warn("Illegal state - router interface port does not contain fixed IPs {}",
 245                         port);
 246                 return;
 247             }
 248             FixedIps portIpWithSubnet = potentialPortIpWithSubnet.get();
 249             L3ContextId l3Context = new L3ContextId(port.getNetworkId().getValue());
 250             // change L3Context for all EPs with same subnet as router port
 251             changeL3ContextForEpsInSubnet(portIpWithSubnet.getSubnetId(), oldNeutron.getPorts(), l3Context);
 252             // set L3Context as parent for bridge domain which is parent of subnet
 253             TenantId tenantId = new TenantId(port.getTenantId().getValue());
 254             Optional<Subnet> potentialRouterPortSubnet = SubnetUtils.findSubnet(portIpWithSubnet.getSubnetId(), oldNeutron.getSubnets());
 255             if (!potentialRouterPortSubnet.isPresent()) {
 256                 LOG.warn("Illegal state - router interface port is in subnet which does not exist. {}",
 257                         port);
 258                 return;
 259             }
 260             ReadWriteTransaction rwTx = dataProvider.newReadWriteTransaction();
 261             Subnet routerPortSubnet = potentialRouterPortSubnet.get();
 262             L2BridgeDomainId l2BdId = new L2BridgeDomainId(routerPortSubnet.getNetworkId().getValue());
 263             L2BridgeDomain l2Bd = new L2BridgeDomainBuilder().setId(l2BdId).setParent(l3Context).build();
 264             rwTx.merge(LogicalDatastoreType.CONFIGURATION, IidFactory.l2BridgeDomainIid(tenantId, l2BdId), l2Bd);
 265             // remove virtual router IP for subnet
 266             org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.policy.rev140421.tenants.tenant.forwarding.context.Subnet subnet =
 267                     NeutronSubnetAware.createSubnet(routerPortSubnet, null);
 268             rwTx.put(LogicalDatastoreType.CONFIGURATION, IidFactory.subnetIid(tenantId, subnet.getId()), subnet);
 269             DataStoreHelper.submitToDs(rwTx);
 270         } else if (PortUtils.isDhcpPort(port)) {
 271             LOG.trace("Port is DHCP port: {}", port.getUuid().getValue());
 272             UnregisterEndpointInput unregEpInput = createUnregisterEndpointInput(port, oldNeutron);
 273             unregisterEndpointAndRemoveMapping(unregEpInput, port);
 274         } else if (PortUtils.isNormalPort(port)) {
 275             LOG.trace("Port is normal port: {}", port.getUuid().getValue());
 276             UnregisterEndpointInput unregEpInput = createUnregisterEndpointInput(port, oldNeutron);
 277             unregisterEndpointAndRemoveMapping(unregEpInput, port);
 278         } else if (PortUtils.isRouterGatewayPort(port)) {
 279             // do nothing because actual trigger is detaching of port from router
 280             LOG.trace("Port is router gateway port: {}", port.getUuid().getValue());
 281         } else if (PortUtils.isFloatingIpPort(port)) {
 282             // do nothing because trigger is floating IP
 283             LOG.trace("Port is floating ip: {}", port.getUuid().getValue());
 284         } else {
 285             LOG.warn("Unknown port: {}", port);
 286         }
 287     }
 288
 289     private UnregisterEndpointInput createUnregisterEndpointInput(Port port, Neutron neutron) {
 290         UnregisterEndpointInputBuilder inputBuilder = new UnregisterEndpointInputBuilder();
 291         L2 l2Ep = new L2Builder().setL2Context(new L2BridgeDomainId(port.getNetworkId().getValue()))
 292             .setMacAddress(new MacAddress(port.getMacAddress()))
 293             .build();
 294         inputBuilder.setL2(ImmutableList.of(l2Ep));
 295         // we've registered EP with only first IP so remove only EP with first IP
 296         Optional<FixedIps> potentialFirstIp = PortUtils.resolveFirstFixedIps(port);
 297         if (!potentialFirstIp.isPresent()) {
 298             FixedIps firstIp = potentialFirstIp.get();
 299             L3Address l3Address = resolveL3AddressFromPort(port, firstIp, neutron);
 300             L3 l3 = new L3Builder().setIpAddress(l3Address.getIpAddress())
 301                 .setL3Context(l3Address.getL3Context())
 302                 .build();
 303             inputBuilder.setL3(ImmutableList.of(l3));
 304         }
 305         return inputBuilder.build();
 306     }
 307
 308     private void unregisterEndpointAndRemoveMapping(UnregisterEndpointInput unregEpInput, Port port) {
 309         boolean isUnregisteredEndpoint = epRegistrator.unregisterEndpoint(unregEpInput);
 310         if (isUnregisteredEndpoint) {
 311             ReadWriteTransaction rwTx = dataProvider.newReadWriteTransaction();
 312             UniqueId portId = new UniqueId(port.getUuid().getValue());
 313             EndpointKey epKey = new EndpointKey(new L2BridgeDomainId(port.getNetworkId().getValue()),
 314                     new MacAddress(port.getMacAddress()));
 315             LOG.trace("Removing Port-Endpoint mapping for port {} (device owner {}) and endpoint {}",
 316                     port.getUuid().getValue(), port.getDeviceOwner(), epKey);
 317             DataStoreHelper.removeIfExists(LogicalDatastoreType.OPERATIONAL,
 318                     NeutronGbpIidFactory.endpointByPortIid(portId), rwTx);
 319             DataStoreHelper.removeIfExists(LogicalDatastoreType.OPERATIONAL,
 320                     NeutronGbpIidFactory.portByEndpointIid(epKey.getL2Context(), epKey.getMacAddress()), rwTx);
 321             DataStoreHelper.submitToDs(rwTx);
 322         }
 323     }
 324
 325     private static L3Address resolveL3AddressFromPort(Port port, FixedIps portFixedIPs, Neutron neutron) {
 326         Set<Port> routerIfacePorts = PortUtils.findRouterInterfacePorts(neutron.getPorts());
 327         for (Port routerIfacePort : routerIfacePorts) {
 328             Uuid routerIfacePortSubnet = routerIfacePort.getFixedIps().get(0).getSubnetId();
 329             // if port is in the same subnet as router interface then we want to use L3Context of
 330             // router
 331             if (portFixedIPs.getSubnetId().equals(routerIfacePortSubnet)) {
 332                 L3ContextId epL3ContextId = new L3ContextId(routerIfacePort.getDeviceId());
 333                 LOG.trace("Router interface port was found in the same subnet as port have {}", port);
 334                 return new L3AddressBuilder().setL3Context(epL3ContextId)
 335                     .setIpAddress(portFixedIPs.getIpAddress())
 336                     .build();
 337             }
 338         }
 339         return new L3AddressBuilder().setL3Context(new L3ContextId(port.getNetworkId().getValue()))
 340             .setIpAddress(portFixedIPs.getIpAddress())
 341             .build();
 342     }
 343
 344 }