Ejemplo n.º 1
0
  @Override
  public Status programIpRewriteExclusion(
      Long dpid, String segmentationId, String excludedCidr, Action action) {
    String nodeName = Constants.OPENFLOW_NODE_PREFIX + dpid;

    MatchBuilder matchBuilder = new MatchBuilder();
    NodeBuilder nodeBuilder = OF13Provider.createNodeBuilder(nodeName);

    // Instructions List Stores Individual Instructions
    InstructionsBuilder isb = new InstructionsBuilder();
    List<Instruction> instructions = Lists.newArrayList();
    InstructionBuilder ib;

    MatchUtils.createTunnelIDMatch(matchBuilder, new BigInteger(segmentationId));
    String ipAddress = excludedCidr.substring(0, excludedCidr.indexOf("/"));
    InetAddress inetAddress;
    try {
      inetAddress = InetAddress.getByName(ipAddress);
    } catch (UnknownHostException e) {
      return new Status(StatusCode.BADREQUEST);
    }
    if (inetAddress instanceof Inet6Address) {
      // WORKAROUND: For now ipv6 is not supported
      // TODO: implement ipv6 cidr case
      LOG.debug("ipv6 cidr is not implemented yet. cidr {}", excludedCidr);
      return new Status(StatusCode.NOTIMPLEMENTED);
    }
    MatchUtils.createDstL3IPv4Match(matchBuilder, new Ipv4Prefix(excludedCidr));

    // Goto Next Table
    ib = getMutablePipelineInstructionBuilder();
    ib.setOrder(0);
    ib.setKey(new InstructionKey(0));
    instructions.add(ib.build());

    FlowBuilder flowBuilder = new FlowBuilder();
    flowBuilder.setMatch(matchBuilder.build());
    flowBuilder.setInstructions(isb.setInstruction(instructions).build());

    String flowId = "InboundNATExclusion_" + segmentationId + "_" + excludedCidr;
    flowBuilder.setId(new FlowId(flowId));
    FlowKey key = new FlowKey(new FlowId(flowId));
    flowBuilder.setBarrier(true);
    flowBuilder.setTableId(this.getTable());
    flowBuilder.setKey(key);
    flowBuilder.setPriority(1024);
    flowBuilder.setFlowName(flowId);
    flowBuilder.setHardTimeout(0);
    flowBuilder.setIdleTimeout(0);

    if (action.equals(Action.ADD)) {
      writeFlow(flowBuilder, nodeBuilder);
    } else {
      removeFlow(flowBuilder, nodeBuilder);
    }

    // ToDo: WriteFlow/RemoveFlow should return something we can use to check success
    return new Status(StatusCode.SUCCESS);
  }
Ejemplo n.º 2
0
  @Override
  public Status programIpRewriteRule(
      Long dpid,
      Long inPort,
      String destSegId,
      InetAddress matchAddress,
      InetAddress rewriteAddress,
      Action action) {
    String nodeName = Constants.OPENFLOW_NODE_PREFIX + dpid;

    MatchBuilder matchBuilder = new MatchBuilder();
    NodeBuilder nodeBuilder = OF13Provider.createNodeBuilder(nodeName);

    // Instructions List Stores Individual Instructions
    InstructionsBuilder isb = new InstructionsBuilder();
    List<Instruction> instructions = Lists.newArrayList();
    InstructionBuilder ib = new InstructionBuilder();

    MatchUtils.createInPortMatch(matchBuilder, dpid, inPort);
    MatchUtils.createDstL3IPv4Match(
        matchBuilder, MatchUtils.iPv4PrefixFromIPv4Address(matchAddress.getHostAddress()));

    // Set register to indicate that rewrite took place
    ActionBuilder actionBuilder = new ActionBuilder();
    actionBuilder.setAction(
        ActionUtils.nxLoadRegAction(
            new DstNxRegCaseBuilder().setNxReg(REG_FIELD).build(), new BigInteger(destSegId)));

    // Set Dest IP address and set REG_FIELD
    InstructionUtils.createNwDstInstructions(
        ib, MatchUtils.iPv4PrefixFromIPv4Address(rewriteAddress.getHostAddress()), actionBuilder);
    ib.setOrder(0);
    ib.setKey(new InstructionKey(0));
    instructions.add(ib.build());

    // Goto Next Table
    ib = getMutablePipelineInstructionBuilder();
    ib.setOrder(1);
    ib.setKey(new InstructionKey(1));
    instructions.add(ib.build());

    FlowBuilder flowBuilder = new FlowBuilder();
    flowBuilder.setMatch(matchBuilder.build());
    flowBuilder.setInstructions(isb.setInstruction(instructions).build());

    String flowId = "InboundNAT_" + inPort + "_" + destSegId + "_" + matchAddress.getHostAddress();
    flowBuilder.setId(new FlowId(flowId));
    FlowKey key = new FlowKey(new FlowId(flowId));
    flowBuilder.setBarrier(true);
    flowBuilder.setTableId(this.getTable());
    flowBuilder.setKey(key);
    flowBuilder.setPriority(1024);
    flowBuilder.setFlowName(flowId);
    flowBuilder.setHardTimeout(0);
    flowBuilder.setIdleTimeout(0);

    if (action.equals(Action.ADD)) {
      writeFlow(flowBuilder, nodeBuilder);
    } else {
      removeFlow(flowBuilder, nodeBuilder);
    }

    // ToDo: WriteFlow/RemoveFlow should return something we can use to check success
    return new Status(StatusCode.SUCCESS);
  }