openstack/net-virt-providers/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/providers/openflow13/services/InboundNatService.java

   1 /*
   2  * Copyright (c) 2014, 2015 Red Hat, 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
   9 package org.opendaylight.ovsdb.openstack.netvirt.providers.openflow13.services;
  10
  11 import java.math.BigInteger;
  12 import java.net.InetAddress;
  13 import java.net.Inet6Address;
  14 import java.net.UnknownHostException;
  15 import java.util.List;
  16
  17 import org.opendaylight.ovsdb.openstack.netvirt.api.Action;
  18 import org.opendaylight.ovsdb.openstack.netvirt.api.InboundNatProvider;
  19 import org.opendaylight.ovsdb.openstack.netvirt.api.Status;
  20 import org.opendaylight.ovsdb.openstack.netvirt.api.StatusCode;
  21 import org.opendaylight.ovsdb.openstack.netvirt.providers.ConfigInterface;
  22 import org.opendaylight.ovsdb.openstack.netvirt.providers.openflow13.AbstractServiceInstance;
  23 import org.opendaylight.ovsdb.openstack.netvirt.providers.openflow13.Service;
  24 import org.opendaylight.ovsdb.utils.mdsal.openflow.ActionUtils;
  25 import org.opendaylight.ovsdb.utils.mdsal.openflow.FlowUtils;
  26 import org.opendaylight.ovsdb.utils.mdsal.openflow.InstructionUtils;
  27 import org.opendaylight.ovsdb.utils.mdsal.openflow.MatchUtils;
  28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Prefix;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.FlowBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.InstructionsBuilder;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.MatchBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.Instruction;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionBuilder;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.InstructionKey;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeBuilder;
  37
  38 import com.google.common.collect.Lists;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmNxReg;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowjava.nx.match.rev140421.NxmNxReg3;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflowplugin.extension.nicira.action.rev140714.dst.choice.grouping.dst.choice.DstNxRegCaseBuilder;
  42 import org.osgi.framework.BundleContext;
  43 import org.osgi.framework.ServiceReference;
  44 import org.slf4j.Logger;
  45 import org.slf4j.LoggerFactory;
  46
  47 public class InboundNatService extends AbstractServiceInstance implements ConfigInterface, InboundNatProvider {
  48     private static final Logger LOG = LoggerFactory.getLogger(InboundNatService.class);
  49     public static final Class<? extends NxmNxReg> REG_FIELD = NxmNxReg3.class;
  50
  51     public InboundNatService() {
  52         super(Service.INBOUND_NAT);
  53     }
  54
  55     public InboundNatService(Service service) {
  56         super(service);
  57     }
  58
  59     @Override
  60     public Status programIpRewriteRule(Long dpid, Long inPort, String destSegId, InetAddress matchAddress,
  61                                        InetAddress rewriteAddress, Action action) {
  62         NodeBuilder nodeBuilder = FlowUtils.createNodeBuilder(dpid);
  63         FlowBuilder flowBuilder = new FlowBuilder();
  64         String flowName = "InboundNAT_" + inPort + "_" + destSegId + "_" + matchAddress.getHostAddress();
  65         FlowUtils.initFlowBuilder(flowBuilder, flowName, getTable()).setPriority(1024);
  66
  67         MatchBuilder matchBuilder = new MatchBuilder();
  68         MatchUtils.createInPortMatch(matchBuilder, dpid, inPort);
  69         MatchUtils.createDstL3IPv4Match(matchBuilder,
  70                 MatchUtils.iPv4PrefixFromIPv4Address(matchAddress.getHostAddress()));
  71         flowBuilder.setMatch(matchBuilder.build());
  72
  73         if (action.equals(Action.ADD)) {
  74             // Instructions List Stores Individual Instructions
  75             InstructionsBuilder isb = new InstructionsBuilder();
  76             List<Instruction> instructions = Lists.newArrayList();
  77             InstructionBuilder ib = new InstructionBuilder();
  78
  79             // Set register to indicate that rewrite took place
  80             ActionBuilder actionBuilder = new ActionBuilder();
  81             actionBuilder.setAction(ActionUtils.nxLoadRegAction(new DstNxRegCaseBuilder().setNxReg(REG_FIELD).build(),
  82                     new BigInteger(destSegId)));
  83
  84             // Set Dest IP address and set REG_FIELD
  85             InstructionUtils.createNwDstInstructions(ib,
  86                     MatchUtils.iPv4PrefixFromIPv4Address(rewriteAddress.getHostAddress()), actionBuilder);
  87             ib.setOrder(0);
  88             ib.setKey(new InstructionKey(0));
  89             instructions.add(ib.build());
  90
  91             // Goto Next Table
  92             ib = getMutablePipelineInstructionBuilder();
  93             ib.setOrder(1);
  94             ib.setKey(new InstructionKey(1));
  95             instructions.add(ib.build());
  96
  97             flowBuilder.setInstructions(isb.setInstruction(instructions).build());
  98
  99             writeFlow(flowBuilder, nodeBuilder);
 100         } else {
 101             removeFlow(flowBuilder, nodeBuilder);
 102         }
 103
 104         // ToDo: WriteFlow/RemoveFlow should return something we can use to check success
 105         return new Status(StatusCode.SUCCESS);
 106     }
 107
 108     @Override
 109     public Status programIpRewriteExclusion(Long dpid, String segmentationId, String excludedCidr,
 110                                             Action action) {
 111         String ipAddress = excludedCidr.substring(0, excludedCidr.indexOf("/"));
 112         InetAddress inetAddress;
 113         try {
 114             inetAddress = InetAddress.getByName(ipAddress);
 115         } catch (UnknownHostException e) {
 116             return new Status(StatusCode.BADREQUEST);
 117         }
 118         if (inetAddress instanceof Inet6Address) {
 119             // WORKAROUND: For now ipv6 is not supported
 120             // TODO: implement ipv6 cidr case
 121             LOG.debug("ipv6 cidr is not implemented yet. cidr {}",
 122                     excludedCidr);
 123             return new Status(StatusCode.NOTIMPLEMENTED);
 124         }
 125
 126         NodeBuilder nodeBuilder = FlowUtils.createNodeBuilder(dpid);
 127         FlowBuilder flowBuilder = new FlowBuilder();
 128         String flowName = "InboundNATExclusion_" + segmentationId + "_" + excludedCidr;
 129         FlowUtils.initFlowBuilder(flowBuilder, flowName, getTable()).setPriority(1024);
 130
 131         MatchBuilder matchBuilder = new MatchBuilder();
 132         MatchUtils.createTunnelIDMatch(matchBuilder, new BigInteger(segmentationId));
 133
 134         MatchUtils.createDstL3IPv4Match(matchBuilder, new Ipv4Prefix(excludedCidr));
 135         flowBuilder.setMatch(matchBuilder.build());
 136
 137         if (action.equals(Action.ADD)) {
 138             // Instructions List Stores Individual Instructions
 139             InstructionsBuilder isb = new InstructionsBuilder();
 140             List<Instruction> instructions = Lists.newArrayList();
 141             InstructionBuilder ib;
 142
 143             // Goto Next Table
 144             ib = getMutablePipelineInstructionBuilder();
 145             ib.setOrder(0);
 146             ib.setKey(new InstructionKey(0));
 147             instructions.add(ib.build());
 148
 149             flowBuilder.setInstructions(isb.setInstruction(instructions).build());
 150
 151             writeFlow(flowBuilder, nodeBuilder);
 152         } else {
 153             removeFlow(flowBuilder, nodeBuilder);
 154         }
 155
 156         // ToDo: WriteFlow/RemoveFlow should return something we can use to check success
 157         return new Status(StatusCode.SUCCESS);
 158     }
 159
 160     @Override
 161     public void setDependencies(BundleContext bundleContext, ServiceReference serviceReference) {
 162         super.setDependencies(bundleContext.getServiceReference(InboundNatProvider.class.getName()), this);
 163     }
 164
 165     @Override
 166     public void setDependencies(Object impl) {}
 167 }