@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);
}
@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);
}
