Exemplo n.º 1
0
  private void populateRoutingRulestoSameNode(
      Ip4Address vmIp,
      MacAddress vmMac,
      PortNumber port,
      DeviceId deviceId,
      long vni,
      String cidr) {
    TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
    TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();

    // FIXME: we need to check the VNI of the dest IP also just in case...
    sBuilder
        .matchEthType(Ethernet.TYPE_IPV4)
        .matchIPDst(vmIp.toIpPrefix())
        .matchIPSrc(IpPrefix.valueOf(cidr))
        .matchTunnelId(vni);

    tBuilder.setEthDst(vmMac).setOutput(port);

    ForwardingObjective fo =
        DefaultForwardingObjective.builder()
            .withSelector(sBuilder.build())
            .withTreatment(tBuilder.build())
            .withPriority(EW_ROUTING_RULE_PRIORITY)
            .withFlag(ForwardingObjective.Flag.SPECIFIC)
            .fromApp(appId)
            .add();

    flowObjectiveService.forward(deviceId, fo);
  }
Exemplo n.º 2
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  private void populateRoutingRulestoDifferentNode(
      Ip4Address vmIp, long vni, DeviceId deviceId, Ip4Address hostIp, String cidr) {
    TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
    TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();

    sBuilder
        .matchEthType(Ethernet.TYPE_IPV4)
        .matchTunnelId(vni)
        .matchIPSrc(IpPrefix.valueOf(cidr))
        .matchIPDst(vmIp.toIpPrefix());
    tBuilder
        .extension(buildExtension(deviceService, deviceId, hostIp), deviceId)
        .setOutput(nodeService.tunnelPort(deviceId).get());

    ForwardingObjective fo =
        DefaultForwardingObjective.builder()
            .withSelector(sBuilder.build())
            .withTreatment(tBuilder.build())
            .withPriority(EW_ROUTING_RULE_PRIORITY)
            .withFlag(ForwardingObjective.Flag.SPECIFIC)
            .fromApp(appId)
            .add();

    flowObjectiveService.forward(deviceId, fo);
  }
Exemplo n.º 3
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  private void removeExternalRules(OpenstackNetwork osNet, String subNetCidr) {
    TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
    sBuilder
        .matchEthType(Ethernet.TYPE_IPV4)
        .matchTunnelId(Long.valueOf(osNet.segmentId()))
        .matchIPSrc(IpPrefix.valueOf(subNetCidr))
        .matchEthDst(Constants.DEFAULT_GATEWAY_MAC);

    nodeService
        .completeNodes()
        .forEach(
            node -> {
              ForwardingObjective.Flag flag =
                  node.type().equals(GATEWAY)
                      ? ForwardingObjective.Flag.VERSATILE
                      : ForwardingObjective.Flag.SPECIFIC;

              RulePopulatorUtil.removeRule(
                  flowObjectiveService,
                  appId,
                  node.intBridge(),
                  sBuilder.build(),
                  flag,
                  ROUTING_RULE_PRIORITY);
            });
  }
Exemplo n.º 4
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  private TrafficSelector buildSelector(Criterion... criteria) {

    TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();

    for (Criterion c : criteria) {
      sBuilder.add(c);
    }

    return sBuilder.build();
  }
  /**
   * Constructs a BGP intent and put it into the intentList.
   *
   * <p>The purpose of this method is too simplify the setUpBgpIntents() method, and to make the
   * setUpBgpIntents() easy to read.
   *
   * @param srcVlanId ingress VlanId
   * @param dstVlanId egress VlanId
   * @param srcPrefix source IP prefix to match
   * @param dstPrefix destination IP prefix to match
   * @param srcTcpPort source TCP port to match
   * @param dstTcpPort destination TCP port to match
   * @param srcConnectPoint source connect point for PointToPointIntent
   * @param dstConnectPoint destination connect point for PointToPointIntent
   */
  private void bgpPathintentConstructor(
      VlanId srcVlanId,
      VlanId dstVlanId,
      String srcPrefix,
      String dstPrefix,
      Short srcTcpPort,
      Short dstTcpPort,
      ConnectPoint srcConnectPoint,
      ConnectPoint dstConnectPoint) {

    TrafficSelector.Builder builder =
        DefaultTrafficSelector.builder()
            .matchEthType(Ethernet.TYPE_IPV4)
            .matchIPProtocol(IPv4.PROTOCOL_TCP)
            .matchIPSrc(IpPrefix.valueOf(srcPrefix))
            .matchIPDst(IpPrefix.valueOf(dstPrefix));

    if (!srcVlanId.equals(VlanId.NONE)) {
      builder.matchVlanId(srcVlanId);
    }

    TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder();

    if (!dstVlanId.equals(VlanId.NONE)) {
      treatment.setVlanId(dstVlanId);
    }

    if (srcTcpPort != null) {
      builder.matchTcpSrc(TpPort.tpPort(srcTcpPort));
    }
    if (dstTcpPort != null) {
      builder.matchTcpDst(TpPort.tpPort(dstTcpPort));
    }

    Key key =
        Key.of(
            srcPrefix.split("/")[0]
                + "-"
                + dstPrefix.split("/")[0]
                + "-"
                + ((srcTcpPort == null) ? "dst" : "src"),
            APPID);

    PointToPointIntent intent =
        PointToPointIntent.builder()
            .appId(APPID)
            .key(key)
            .selector(builder.build())
            .treatment(treatment.build())
            .ingressPoint(srcConnectPoint)
            .egressPoint(dstConnectPoint)
            .build();

    intentList.add(intent);
  }
Exemplo n.º 6
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    private void prepareInstallation() {
      Set<ControllerNode> instances = Sets.newHashSet(clusterService.getNodes());
      instances.remove(clusterService.getLocalNode());
      Set<NodeId> acceptableNodes = Sets.newHashSet();
      if (neighbours >= instances.size()) {
        instances.forEach(instance -> acceptableNodes.add(instance.id()));
      } else {
        Iterator<ControllerNode> nodes = instances.iterator();
        for (int i = neighbours; i > 0; i--) {
          acceptableNodes.add(nodes.next().id());
        }
      }
      acceptableNodes.add(clusterService.getLocalNode().id());

      Set<Device> devices = Sets.newHashSet();
      for (Device dev : deviceService.getDevices()) {
        if (acceptableNodes.contains(mastershipService.getMasterFor(dev.id()))) {
          devices.add(dev);
        }
      }

      TrafficTreatment treatment =
          DefaultTrafficTreatment.builder()
              .setOutput(PortNumber.portNumber(RandomUtils.nextInt()))
              .build();
      TrafficSelector.Builder sbuilder;
      FlowRuleOperations.Builder rules = FlowRuleOperations.builder();
      FlowRuleOperations.Builder remove = FlowRuleOperations.builder();

      for (Device d : devices) {
        for (int i = 0; i < this.flowPerDevice; i++) {
          sbuilder = DefaultTrafficSelector.builder();

          sbuilder
              .matchEthSrc(MacAddress.valueOf(RandomUtils.nextInt() * i))
              .matchEthDst(MacAddress.valueOf((Integer.MAX_VALUE - i) * RandomUtils.nextInt()));

          int randomPriority = RandomUtils.nextInt();
          FlowRule f =
              DefaultFlowRule.builder()
                  .forDevice(d.id())
                  .withSelector(sbuilder.build())
                  .withTreatment(treatment)
                  .withPriority(randomPriority)
                  .fromApp(appId)
                  .makeTemporary(10)
                  .build();
          rules.add(f);
          remove.remove(f);
        }
      }

      this.adds = rules;
      this.removes = remove;
    }
Exemplo n.º 7
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  @Override
  public TrafficSelector decode(ObjectNode json, CodecContext context) {
    final JsonCodec<Criterion> criterionCodec = context.codec(Criterion.class);

    JsonNode criteriaJson = json.get(CRITERIA);
    TrafficSelector.Builder builder = DefaultTrafficSelector.builder();
    if (criteriaJson != null) {
      IntStream.range(0, criteriaJson.size())
          .forEach(i -> builder.add(criterionCodec.decode(get(criteriaJson, i), context)));
    }
    return builder.build();
  }
Exemplo n.º 8
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  @Activate
  public void activate(ComponentContext context) {
    appId = coreService.registerApplication("org.onosproject.provider.host");

    modified(context);
    providerService = providerRegistry.register(this);
    pktService.addProcessor(processor, 1);
    deviceService.addListener(deviceListener);

    TrafficSelector.Builder selectorBuilder = DefaultTrafficSelector.builder();
    selectorBuilder.matchEthType(Ethernet.TYPE_ARP);
    pktService.requestPackets(selectorBuilder.build(), PacketPriority.CONTROL, appId);

    log.info("Started");
  }
Exemplo n.º 9
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  private void removeGatewayIcmpRule(Ip4Address gatewayIp, DeviceId deviceId) {
    TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();

    sBuilder
        .matchEthType(Ethernet.TYPE_IPV4)
        .matchIPProtocol(IPv4.PROTOCOL_ICMP)
        .matchIPDst(gatewayIp.toIpPrefix());

    RulePopulatorUtil.removeRule(
        flowObjectiveService,
        appId,
        deviceId,
        sBuilder.build(),
        ForwardingObjective.Flag.VERSATILE,
        GATEWAY_ICMP_PRIORITY);
  }
Exemplo n.º 10
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  private void populateRuleToGateway(DeviceId deviceId, GroupId groupId, long vni, String cidr) {
    TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
    TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();

    sBuilder
        .matchEthType(Ethernet.TYPE_IPV4)
        .matchTunnelId(vni)
        .matchIPSrc(IpPrefix.valueOf(cidr))
        .matchEthDst(Constants.DEFAULT_GATEWAY_MAC);

    tBuilder.group(groupId);
    ForwardingObjective fo =
        DefaultForwardingObjective.builder()
            .withSelector(sBuilder.build())
            .withTreatment(tBuilder.build())
            .withFlag(ForwardingObjective.Flag.SPECIFIC)
            .withPriority(ROUTING_RULE_PRIORITY)
            .fromApp(appId)
            .add();

    flowObjectiveService.forward(deviceId, fo);
  }
Exemplo n.º 11
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  private void populateGatewayIcmpRule(Ip4Address gatewayIp, DeviceId deviceId) {
    TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
    TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();

    sBuilder
        .matchEthType(Ethernet.TYPE_IPV4)
        .matchIPProtocol(IPv4.PROTOCOL_ICMP)
        .matchIPDst(gatewayIp.toIpPrefix());

    tBuilder.setOutput(PortNumber.CONTROLLER);

    ForwardingObjective fo =
        DefaultForwardingObjective.builder()
            .withSelector(sBuilder.build())
            .withTreatment(tBuilder.build())
            .withPriority(GATEWAY_ICMP_PRIORITY)
            .withFlag(ForwardingObjective.Flag.VERSATILE)
            .fromApp(appId)
            .add();

    flowObjectiveService.forward(deviceId, fo);
  }
Exemplo n.º 12
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  /** Request packet in via PacketService. */
  private void requestPackests() {
    TrafficSelector.Builder selector = DefaultTrafficSelector.builder();
    selector.matchEthType(Ethernet.TYPE_IPV4);
    packetService.requestPackets(selector.build(), PacketPriority.REACTIVE, appId);
    selector.matchEthType(Ethernet.TYPE_ARP);
    packetService.requestPackets(selector.build(), PacketPriority.REACTIVE, appId);

    if (ipv6Forwarding) {
      selector.matchEthType(Ethernet.TYPE_IPV6);
      packetService.requestPackets(selector.build(), PacketPriority.REACTIVE, appId);
    }
  }
Exemplo n.º 13
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  /**
   * Builds a Multi Point to Single Point intent.
   *
   * @param key The intent key
   * @param srcs The source Connect Points
   * @param dst The destination Connect Point
   * @return Multi Point to Single Point intent generated.
   */
  private MultiPointToSinglePointIntent buildUniIntent(
      Key key, Set<ConnectPoint> srcs, ConnectPoint dst, VlanId vlanId, MacAddress mac) {
    MultiPointToSinglePointIntent intent;

    TrafficTreatment treatment = DefaultTrafficTreatment.emptyTreatment();

    TrafficSelector.Builder builder =
        DefaultTrafficSelector.builder().matchEthDst(mac).matchVlanId(vlanId);

    TrafficSelector selector = builder.build();

    intent =
        MultiPointToSinglePointIntent.builder()
            .appId(APPID)
            .key(key)
            .selector(selector)
            .treatment(treatment)
            .ingressPoints(srcs)
            .egressPoint(dst)
            .priority(PRIORITY_OFFSET)
            .build();
    return intent;
  }
Exemplo n.º 14
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  private void removeRoutingRules(Host host, Set<OpenstackSubnet> osSubNets) {
    String osSubNetId = host.annotations().value(SUBNET_ID);
    if (osSubNetId == null) {
      return;
    }

    Map<String, String> vniMap = new HashMap<>();
    openstackService.networks().stream().forEach(n -> vniMap.put(n.id(), n.segmentId()));

    osSubNets
        .stream()
        .filter(osSubNet -> !osSubNet.id().equals(osSubNetId))
        .forEach(
            osSubNet -> {
              TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
              sBuilder
                  .matchEthType(Ethernet.TYPE_IPV4)
                  .matchIPDst(host.ipAddresses().stream().findFirst().get().toIpPrefix())
                  .matchIPSrc(IpPrefix.valueOf(osSubNet.cidr()))
                  .matchTunnelId(Long.valueOf(vniMap.get(osSubNet.networkId())));

              nodeService
                  .completeNodes()
                  .stream()
                  .filter(node -> node.type().equals(COMPUTE))
                  .forEach(
                      node ->
                          RulePopulatorUtil.removeRule(
                              flowObjectiveService,
                              appId,
                              node.intBridge(),
                              sBuilder.build(),
                              ForwardingObjective.Flag.SPECIFIC,
                              EW_ROUTING_RULE_PRIORITY));
            });
    log.debug("Removed routing rule from {} to {}", host, osSubNets);
  }
Exemplo n.º 15
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  private void populateGatewayToController(long vni, String subNetCidr) {
    TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
    TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();

    sBuilder
        .matchEthType(Ethernet.TYPE_IPV4)
        .matchTunnelId(vni)
        .matchIPSrc(IpPrefix.valueOf(subNetCidr))
        .matchEthDst(Constants.DEFAULT_GATEWAY_MAC);
    tBuilder.setOutput(PortNumber.CONTROLLER);

    ForwardingObjective fo =
        DefaultForwardingObjective.builder()
            .withSelector(sBuilder.build())
            .withTreatment(tBuilder.build())
            .withFlag(ForwardingObjective.Flag.VERSATILE)
            .withPriority(ROUTING_RULE_PRIORITY)
            .fromApp(appId)
            .add();

    gatewayService
        .getGatewayDeviceIds()
        .forEach(deviceId -> flowObjectiveService.forward(deviceId, fo));
  }
Exemplo n.º 16
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  // Install a rule forwarding the packet to the specified port.
  private void installRule(PacketContext context, PortNumber portNumber) {
    //
    // We don't support (yet) buffer IDs in the Flow Service so
    // packet out first.
    //
    Ethernet inPkt = context.inPacket().parsed();
    TrafficSelector.Builder selectorBuilder = DefaultTrafficSelector.builder();

    // If PacketOutOnly or ARP packet than forward directly to output port
    if (packetOutOnly || inPkt.getEtherType() == Ethernet.TYPE_ARP) {
      packetOut(context, portNumber);
      return;
    }

    //
    // If matchDstMacOnly
    //    Create flows matching dstMac only
    // Else
    //    Create flows with default matching and include configured fields
    //
    if (matchDstMacOnly) {
      selectorBuilder.matchEthDst(inPkt.getDestinationMAC());
    } else {
      selectorBuilder
          .matchInPort(context.inPacket().receivedFrom().port())
          .matchEthSrc(inPkt.getSourceMAC())
          .matchEthDst(inPkt.getDestinationMAC());

      // If configured Match Vlan ID
      if (matchVlanId && inPkt.getVlanID() != Ethernet.VLAN_UNTAGGED) {
        selectorBuilder.matchVlanId(VlanId.vlanId(inPkt.getVlanID()));
      }

      //
      // If configured and EtherType is IPv4 - Match IPv4 and
      // TCP/UDP/ICMP fields
      //
      if (matchIpv4Address && inPkt.getEtherType() == Ethernet.TYPE_IPV4) {
        IPv4 ipv4Packet = (IPv4) inPkt.getPayload();
        byte ipv4Protocol = ipv4Packet.getProtocol();
        Ip4Prefix matchIp4SrcPrefix =
            Ip4Prefix.valueOf(ipv4Packet.getSourceAddress(), Ip4Prefix.MAX_MASK_LENGTH);
        Ip4Prefix matchIp4DstPrefix =
            Ip4Prefix.valueOf(ipv4Packet.getDestinationAddress(), Ip4Prefix.MAX_MASK_LENGTH);
        selectorBuilder
            .matchEthType(Ethernet.TYPE_IPV4)
            .matchIPSrc(matchIp4SrcPrefix)
            .matchIPDst(matchIp4DstPrefix);

        if (matchIpv4Dscp) {
          byte dscp = ipv4Packet.getDscp();
          byte ecn = ipv4Packet.getEcn();
          selectorBuilder.matchIPDscp(dscp).matchIPEcn(ecn);
        }

        if (matchTcpUdpPorts && ipv4Protocol == IPv4.PROTOCOL_TCP) {
          TCP tcpPacket = (TCP) ipv4Packet.getPayload();
          selectorBuilder
              .matchIPProtocol(ipv4Protocol)
              .matchTcpSrc(tcpPacket.getSourcePort())
              .matchTcpDst(tcpPacket.getDestinationPort());
        }
        if (matchTcpUdpPorts && ipv4Protocol == IPv4.PROTOCOL_UDP) {
          UDP udpPacket = (UDP) ipv4Packet.getPayload();
          selectorBuilder
              .matchIPProtocol(ipv4Protocol)
              .matchUdpSrc(udpPacket.getSourcePort())
              .matchUdpDst(udpPacket.getDestinationPort());
        }
        if (matchIcmpFields && ipv4Protocol == IPv4.PROTOCOL_ICMP) {
          ICMP icmpPacket = (ICMP) ipv4Packet.getPayload();
          selectorBuilder
              .matchIPProtocol(ipv4Protocol)
              .matchIcmpType(icmpPacket.getIcmpType())
              .matchIcmpCode(icmpPacket.getIcmpCode());
        }
      }

      //
      // If configured and EtherType is IPv6 - Match IPv6 and
      // TCP/UDP/ICMP fields
      //
      if (matchIpv6Address && inPkt.getEtherType() == Ethernet.TYPE_IPV6) {
        IPv6 ipv6Packet = (IPv6) inPkt.getPayload();
        byte ipv6NextHeader = ipv6Packet.getNextHeader();
        Ip6Prefix matchIp6SrcPrefix =
            Ip6Prefix.valueOf(ipv6Packet.getSourceAddress(), Ip6Prefix.MAX_MASK_LENGTH);
        Ip6Prefix matchIp6DstPrefix =
            Ip6Prefix.valueOf(ipv6Packet.getDestinationAddress(), Ip6Prefix.MAX_MASK_LENGTH);
        selectorBuilder
            .matchEthType(Ethernet.TYPE_IPV6)
            .matchIPv6Src(matchIp6SrcPrefix)
            .matchIPv6Dst(matchIp6DstPrefix);

        if (matchIpv6FlowLabel) {
          selectorBuilder.matchIPv6FlowLabel(ipv6Packet.getFlowLabel());
        }

        if (matchTcpUdpPorts && ipv6NextHeader == IPv6.PROTOCOL_TCP) {
          TCP tcpPacket = (TCP) ipv6Packet.getPayload();
          selectorBuilder
              .matchIPProtocol(ipv6NextHeader)
              .matchTcpSrc(tcpPacket.getSourcePort())
              .matchTcpDst(tcpPacket.getDestinationPort());
        }
        if (matchTcpUdpPorts && ipv6NextHeader == IPv6.PROTOCOL_UDP) {
          UDP udpPacket = (UDP) ipv6Packet.getPayload();
          selectorBuilder
              .matchIPProtocol(ipv6NextHeader)
              .matchUdpSrc(udpPacket.getSourcePort())
              .matchUdpDst(udpPacket.getDestinationPort());
        }
        if (matchIcmpFields && ipv6NextHeader == IPv6.PROTOCOL_ICMP6) {
          ICMP6 icmp6Packet = (ICMP6) ipv6Packet.getPayload();
          selectorBuilder
              .matchIPProtocol(ipv6NextHeader)
              .matchIcmpv6Type(icmp6Packet.getIcmpType())
              .matchIcmpv6Code(icmp6Packet.getIcmpCode());
        }
      }
    }
    TrafficTreatment treatment = DefaultTrafficTreatment.builder().setOutput(portNumber).build();

    ForwardingObjective forwardingObjective =
        DefaultForwardingObjective.builder()
            .withSelector(selectorBuilder.build())
            .withTreatment(treatment)
            .withPriority(flowPriority)
            .withFlag(ForwardingObjective.Flag.VERSATILE)
            .fromApp(appId)
            .makeTemporary(flowTimeout)
            .add();

    flowObjectiveService.forward(context.inPacket().receivedFrom().deviceId(), forwardingObjective);

    //
    // If packetOutOfppTable
    //  Send packet back to the OpenFlow pipeline to match installed flow
    // Else
    //  Send packet direction on the appropriate port
    //
    if (packetOutOfppTable) {
      packetOut(context, PortNumber.TABLE);
    } else {
      packetOut(context, portNumber);
    }
  }
Exemplo n.º 17
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  @Override
  // Dell switches need ETH_DST based match condition in all IP table entries.
  // So this method overrides the default spring-open behavior and adds
  // ETH_DST match condition while pushing IP table flow rules
  protected Collection<FlowRule> processSpecific(ForwardingObjective fwd) {
    log.debug("Processing specific");
    TrafficSelector selector = fwd.selector();
    EthTypeCriterion ethType = (EthTypeCriterion) selector.getCriterion(Criterion.Type.ETH_TYPE);
    if ((ethType == null)
        || ((((short) ethType.ethType()) != Ethernet.TYPE_IPV4)
            && (((short) ethType.ethType()) != Ethernet.MPLS_UNICAST))) {
      log.debug("processSpecific: Unsupported " + "forwarding objective criteraia");
      fail(fwd, ObjectiveError.UNSUPPORTED);
      return Collections.emptySet();
    }

    TrafficSelector.Builder filteredSelectorBuilder = DefaultTrafficSelector.builder();
    int forTableId = -1;
    if (((short) ethType.ethType()) == Ethernet.TYPE_IPV4) {
      if (deviceTMac == null) {
        log.debug(
            "processSpecific: ETH_DST filtering "
                + "objective is not set which is required "
                + "before sending a IPv4 forwarding objective");
        // TODO: Map the error to more appropriate error code.
        fail(fwd, ObjectiveError.DEVICEMISSING);
        return Collections.emptySet();
      }
      filteredSelectorBuilder =
          filteredSelectorBuilder
              .matchEthType(Ethernet.TYPE_IPV4)
              .matchEthDst(deviceTMac)
              .matchIPDst(((IPCriterion) selector.getCriterion(Criterion.Type.IPV4_DST)).ip());
      forTableId = ipv4UnicastTableId;
      log.debug("processing IPv4 specific forwarding objective");
    } else {
      filteredSelectorBuilder =
          filteredSelectorBuilder
              .matchEthType(Ethernet.MPLS_UNICAST)
              .matchMplsLabel(
                  ((MplsCriterion) selector.getCriterion(Criterion.Type.MPLS_LABEL)).label());
      // TODO: Add Match for BoS
      // if (selector.getCriterion(Criterion.Type.MPLS_BOS) != null) {
      // }
      forTableId = mplsTableId;
      log.debug("processing MPLS specific forwarding objective");
    }

    TrafficTreatment.Builder treatmentBuilder = DefaultTrafficTreatment.builder();
    if (fwd.treatment() != null) {
      for (Instruction i : fwd.treatment().allInstructions()) {
        treatmentBuilder.add(i);
      }
    }

    if (fwd.nextId() != null) {
      NextGroup next = flowObjectiveStore.getNextGroup(fwd.nextId());

      if (next != null) {
        GroupKey key = appKryo.deserialize(next.data());

        Group group = groupService.getGroup(deviceId, key);

        if (group == null) {
          log.warn("The group left!");
          fail(fwd, ObjectiveError.GROUPMISSING);
          return Collections.emptySet();
        }
        treatmentBuilder.group(group.id());
        log.debug("Adding OUTGROUP action");
      } else {
        log.warn("processSpecific: No associated next objective object");
        fail(fwd, ObjectiveError.GROUPMISSING);
        return Collections.emptySet();
      }
    }

    TrafficSelector filteredSelector = filteredSelectorBuilder.build();
    TrafficTreatment treatment = treatmentBuilder.transition(aclTableId).build();

    FlowRule.Builder ruleBuilder =
        DefaultFlowRule.builder()
            .fromApp(fwd.appId())
            .withPriority(fwd.priority())
            .forDevice(deviceId)
            .withSelector(filteredSelector)
            .withTreatment(treatment);

    if (fwd.permanent()) {
      ruleBuilder.makePermanent();
    } else {
      ruleBuilder.makeTemporary(fwd.timeout());
    }

    ruleBuilder.forTable(forTableId);
    return Collections.singletonList(ruleBuilder.build());
  }
Exemplo n.º 18
0
  /**
   * Generates a route intent for a prefix, the next hop IP address, and the next hop MAC address.
   *
   * <p>This method will find the egress interface for the intent. Intent will match dst IP prefix
   * and rewrite dst MAC address at all other border switches, then forward packets according to dst
   * MAC address.
   *
   * @param prefix IP prefix of the route to add
   * @param nextHopIpAddress IP address of the next hop
   * @param nextHopMacAddress MAC address of the next hop
   * @return the generated intent, or null if no intent should be submitted
   */
  private MultiPointToSinglePointIntent generateRouteIntent(
      IpPrefix prefix, IpAddress nextHopIpAddress, MacAddress nextHopMacAddress) {

    // Find the attachment point (egress interface) of the next hop
    Interface egressInterface = interfaceService.getMatchingInterface(nextHopIpAddress);
    if (egressInterface == null) {
      log.warn("No outgoing interface found for {}", nextHopIpAddress);
      return null;
    }

    // Generate the intent itself
    Set<ConnectPoint> ingressPorts = new HashSet<>();
    ConnectPoint egressPort = egressInterface.connectPoint();
    log.debug("Generating intent for prefix {}, next hop mac {}", prefix, nextHopMacAddress);

    for (Interface intf : interfaceService.getInterfaces()) {
      // TODO this should be only peering interfaces
      if (!intf.connectPoint().equals(egressInterface.connectPoint())) {
        ConnectPoint srcPort = intf.connectPoint();
        ingressPorts.add(srcPort);
      }
    }

    // Match the destination IP prefix at the first hop
    TrafficSelector.Builder selector = DefaultTrafficSelector.builder();
    if (prefix.isIp4()) {
      selector.matchEthType(Ethernet.TYPE_IPV4);
      // if it is default route, then we do not need match destination
      // IP address
      if (prefix.prefixLength() != 0) {
        selector.matchIPDst(prefix);
      }
    } else {
      selector.matchEthType(Ethernet.TYPE_IPV6);
      // if it is default route, then we do not need match destination
      // IP address
      if (prefix.prefixLength() != 0) {
        selector.matchIPv6Dst(prefix);
      }
    }

    // Rewrite the destination MAC address
    TrafficTreatment.Builder treatment =
        DefaultTrafficTreatment.builder().setEthDst(nextHopMacAddress);
    if (!egressInterface.vlan().equals(VlanId.NONE)) {
      treatment.setVlanId(egressInterface.vlan());
      // If we set VLAN ID, we have to make sure a VLAN tag exists.
      // TODO support no VLAN -> VLAN routing
      selector.matchVlanId(VlanId.ANY);
    }

    int priority = prefix.prefixLength() * PRIORITY_MULTIPLIER + PRIORITY_OFFSET;
    Key key = Key.of(prefix.toString(), appId);
    return MultiPointToSinglePointIntent.builder()
        .appId(appId)
        .key(key)
        .selector(selector.build())
        .treatment(treatment.build())
        .ingressPoints(ingressPorts)
        .egressPoint(egressPort)
        .priority(priority)
        .constraints(CONSTRAINTS)
        .build();
  }