vpnmanager/impl/src/main/java/org/opendaylight/netvirt/vpnmanager/VpnNodeListener.java

   1 /*
   2  * Copyright (c) 2016 Ericsson India Global Services Pvt Ltd. 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.netvirt.vpnmanager;
   9
  10 import java.math.BigInteger;
  11 import java.util.ArrayList;
  12 import java.util.Arrays;
  13 import java.util.Collections;
  14 import java.util.List;
  15 import java.util.concurrent.CopyOnWriteArrayList;
  16 import javax.annotation.PostConstruct;
  17 import javax.inject.Inject;
  18 import javax.inject.Singleton;
  19 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  20 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  22 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  23 import org.opendaylight.genius.mdsalutil.ActionInfo;
  24 import org.opendaylight.genius.mdsalutil.FlowEntity;
  25 import org.opendaylight.genius.mdsalutil.InstructionInfo;
  26 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  27 import org.opendaylight.genius.mdsalutil.MatchInfo;
  28 import org.opendaylight.genius.mdsalutil.NwConstants;
  29 import org.opendaylight.genius.mdsalutil.actions.ActionNxResubmit;
  30 import org.opendaylight.genius.mdsalutil.actions.ActionPuntToController;
  31 import org.opendaylight.genius.mdsalutil.instructions.InstructionApplyActions;
  32 import org.opendaylight.genius.mdsalutil.instructions.InstructionGotoTable;
  33 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  34 import org.opendaylight.genius.mdsalutil.matches.MatchArpOp;
  35 import org.opendaylight.genius.mdsalutil.matches.MatchEthernetType;
  36 import org.opendaylight.infrautils.jobcoordinator.JobCoordinator;
  37 import org.opendaylight.netvirt.elan.arp.responder.ArpResponderUtil;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  40 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  41 import org.slf4j.Logger;
  42 import org.slf4j.LoggerFactory;
  43
  44 @Singleton
  45 public class VpnNodeListener extends AsyncClusteredDataTreeChangeListenerBase<Node, VpnNodeListener> {
  46
  47     private static final Logger LOG = LoggerFactory.getLogger(VpnNodeListener.class);
  48     private static final String FLOWID_PREFIX = "L3.";
  49
  50     private final DataBroker broker;
  51     private final IMdsalApiManager mdsalManager;
  52     private final JobCoordinator jobCoordinator;
  53     private final List<BigInteger> connectedDpnIds;
  54
  55     @Inject
  56     public VpnNodeListener(DataBroker dataBroker, IMdsalApiManager mdsalManager, JobCoordinator jobCoordinator) {
  57         super(Node.class, VpnNodeListener.class);
  58         this.broker = dataBroker;
  59         this.mdsalManager = mdsalManager;
  60         this.jobCoordinator = jobCoordinator;
  61         this.connectedDpnIds = new CopyOnWriteArrayList<>();
  62     }
  63
  64     @PostConstruct
  65     public void start() {
  66         registerListener(LogicalDatastoreType.OPERATIONAL, broker);
  67     }
  68
  69     @Override
  70     protected InstanceIdentifier<Node> getWildCardPath() {
  71         return InstanceIdentifier.create(Nodes.class).child(Node.class);
  72     }
  73
  74     @Override
  75     protected VpnNodeListener getDataTreeChangeListener() {
  76         return VpnNodeListener.this;
  77     }
  78
  79     @Override
  80     protected void add(InstanceIdentifier<Node> identifier, Node add) {
  81         BigInteger dpId = MDSALUtil.getDpnIdFromNodeName(add.getId());
  82         if (!connectedDpnIds.contains(dpId)) {
  83             connectedDpnIds.add(dpId);
  84         }
  85         processNodeAdd(dpId);
  86     }
  87
  88     @Override
  89     protected void remove(InstanceIdentifier<Node> identifier, Node del) {
  90         BigInteger dpId = MDSALUtil.getDpnIdFromNodeName(del.getId());
  91         connectedDpnIds.remove(dpId);
  92     }
  93
  94     @Override
  95     protected void update(InstanceIdentifier<Node> identifier, Node original, Node update) {
  96     }
  97
  98     public boolean isConnectedNode(BigInteger nodeId) {
  99         return nodeId != null && connectedDpnIds.contains(nodeId);
 100     }
 101
 102     private void processNodeAdd(BigInteger dpId) {
 103         jobCoordinator.enqueueJob("VPNNODE-" + dpId.toString(),
 104             () -> {
 105                 WriteTransaction writeFlowTx = broker.newWriteOnlyTransaction();
 106                 LOG.debug("Received notification to install TableMiss entries for dpn {} ", dpId);
 107                 makeTableMissFlow(writeFlowTx, dpId, NwConstants.ADD_FLOW);
 108                 makeL3IntfTblMissFlow(writeFlowTx, dpId, NwConstants.ADD_FLOW);
 109                 makeSubnetRouteTableMissFlow(writeFlowTx, dpId, NwConstants.ADD_FLOW);
 110                 createTableMissForVpnGwFlow(writeFlowTx, dpId);
 111                 createL3GwMacArpFlows(writeFlowTx, dpId);
 112                 programTableMissForVpnVniDemuxTable(writeFlowTx, dpId, NwConstants.ADD_FLOW);
 113                 return Collections.singletonList(writeFlowTx.submit());
 114             }, 3);
 115     }
 116
 117     private void makeTableMissFlow(WriteTransaction writeFlowTx, BigInteger dpnId, int addOrRemove) {
 118         final BigInteger cookieTableMiss = new BigInteger("1030000", 16);
 119         // Instruction to goto L3 InterfaceTable
 120         List<InstructionInfo> instructions =
 121                 Collections.singletonList(new InstructionGotoTable(NwConstants.L3_INTERFACE_TABLE));
 122         List<MatchInfo> matches = new ArrayList<>();
 123         FlowEntity flowEntityLfib = MDSALUtil.buildFlowEntity(dpnId, NwConstants.L3_LFIB_TABLE,
 124             getTableMissFlowRef(dpnId, NwConstants.L3_LFIB_TABLE, NwConstants.TABLE_MISS_FLOW),
 125             NwConstants.TABLE_MISS_PRIORITY, "Table Miss", 0, 0, cookieTableMiss, matches, instructions);
 126
 127         if (addOrRemove == NwConstants.ADD_FLOW) {
 128             LOG.debug("Invoking MDSAL to install Table Miss Entry");
 129             mdsalManager.addFlowToTx(flowEntityLfib, writeFlowTx);
 130         } else {
 131             mdsalManager.removeFlowToTx(flowEntityLfib, writeFlowTx);
 132         }
 133     }
 134
 135     private void makeL3IntfTblMissFlow(WriteTransaction writeFlowTx, BigInteger dpnId, int addOrRemove) {
 136         List<InstructionInfo> instructions = new ArrayList<>();
 137         List<MatchInfo> matches = new ArrayList<>();
 138         final BigInteger cookieTableMiss = new BigInteger("1030000", 16);
 139         // Instruction to goto L3 InterfaceTable
 140
 141         List<ActionInfo> actionsInfos = new ArrayList<>();
 142         actionsInfos.add(new ActionNxResubmit(NwConstants.LPORT_DISPATCHER_TABLE));
 143         instructions.add(new InstructionApplyActions(actionsInfos));
 144         //instructions.add(new InstructionGotoTable(NwConstants.LPORT_DISPATCHER_TABLE));
 145
 146         FlowEntity flowEntityL3Intf = MDSALUtil.buildFlowEntity(dpnId, NwConstants.L3_INTERFACE_TABLE,
 147             getTableMissFlowRef(dpnId, NwConstants.L3_INTERFACE_TABLE, NwConstants.TABLE_MISS_FLOW),
 148             NwConstants.TABLE_MISS_PRIORITY, "L3 Interface Table Miss", 0, 0, cookieTableMiss,
 149             matches, instructions);
 150         if (addOrRemove == NwConstants.ADD_FLOW) {
 151             LOG.debug("Invoking MDSAL to install L3 interface Table Miss Entries");
 152             mdsalManager.addFlowToTx(flowEntityL3Intf, writeFlowTx);
 153         } else {
 154             mdsalManager.removeFlowToTx(flowEntityL3Intf, writeFlowTx);
 155         }
 156     }
 157
 158     private void makeSubnetRouteTableMissFlow(WriteTransaction writeFlowTx, BigInteger dpnId, int addOrRemove) {
 159         final BigInteger cookieTableMiss = new BigInteger("8000004", 16);
 160         List<ActionInfo> actionsInfos = new ArrayList<>();
 161         List<InstructionInfo> instructions = new ArrayList<>();
 162         actionsInfos.add(new ActionPuntToController());
 163         instructions.add(new InstructionApplyActions(actionsInfos));
 164         List<MatchInfo> matches = new ArrayList<>();
 165         String flowRef = getTableMissFlowRef(dpnId, NwConstants.L3_SUBNET_ROUTE_TABLE, NwConstants.TABLE_MISS_FLOW);
 166         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpnId, NwConstants.L3_SUBNET_ROUTE_TABLE, flowRef,
 167             NwConstants.TABLE_MISS_PRIORITY, "Subnet Route Table Miss", 0, 0, cookieTableMiss, matches, instructions);
 168
 169         if (addOrRemove == NwConstants.ADD_FLOW) {
 170             mdsalManager.addFlowToTx(flowEntity, writeFlowTx);
 171         } else {
 172             mdsalManager.removeFlowToTx(flowEntity, writeFlowTx);
 173         }
 174     }
 175
 176     private void programTableMissForVpnVniDemuxTable(WriteTransaction writeFlowTx, BigInteger dpnId, int addOrRemove) {
 177         List<ActionInfo> actionsInfos = Collections.singletonList(new ActionNxResubmit(NwConstants
 178                 .LPORT_DISPATCHER_TABLE));
 179         List<InstructionInfo> instructions = Collections.singletonList(new InstructionApplyActions(actionsInfos));
 180         List<MatchInfo> matches = new ArrayList<>();
 181         String flowRef = getTableMissFlowRef(dpnId, NwConstants.L3VNI_EXTERNAL_TUNNEL_DEMUX_TABLE,
 182                 NwConstants.TABLE_MISS_FLOW);
 183         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpnId, NwConstants.L3VNI_EXTERNAL_TUNNEL_DEMUX_TABLE,
 184                 flowRef, NwConstants.TABLE_MISS_PRIORITY, "VPN-VNI Demux Table Miss", 0, 0,
 185                 new BigInteger("1080000", 16), matches, instructions);
 186
 187         if (addOrRemove == NwConstants.ADD_FLOW) {
 188             mdsalManager.addFlowToTx(flowEntity, writeFlowTx);
 189         } else {
 190             mdsalManager.removeFlowToTx(flowEntity, writeFlowTx);
 191         }
 192     }
 193
 194     private void createTableMissForVpnGwFlow(WriteTransaction writeFlowTx, BigInteger dpId) {
 195         List<MatchInfo> matches = new ArrayList<>();
 196         List<ActionInfo> actionsInfos =
 197                 Collections.singletonList(new ActionNxResubmit(NwConstants.LPORT_DISPATCHER_TABLE));
 198         List<InstructionInfo> instructions = Collections.singletonList(new InstructionApplyActions(actionsInfos));
 199         FlowEntity flowEntityMissforGw = MDSALUtil.buildFlowEntity(dpId, NwConstants.L3_GW_MAC_TABLE,
 200             getTableMissFlowRef(dpId, NwConstants.L3_GW_MAC_TABLE, NwConstants.TABLE_MISS_FLOW),
 201             NwConstants.TABLE_MISS_PRIORITY, "L3 Gw Mac Table Miss", 0, 0, new BigInteger("1080000", 16), matches,
 202             instructions);
 203         LOG.trace("Invoking MDSAL to install L3 Gw Mac Table Miss Entry");
 204         mdsalManager.addFlowToTx(flowEntityMissforGw, writeFlowTx);
 205     }
 206
 207     private void createL3GwMacArpFlows(WriteTransaction writeFlowTx, BigInteger dpId) {
 208         FlowEntity arpReqGwMacTbl = ArpResponderUtil.createArpDefaultFlow(dpId, NwConstants.L3_GW_MAC_TABLE,
 209                 NwConstants.ARP_REQUEST, () -> Arrays.asList(MatchEthernetType.ARP, MatchArpOp.REQUEST),
 210             () -> Collections.singletonList(new ActionNxResubmit(NwConstants.LPORT_DISPATCHER_TABLE)));
 211         LOG.trace("Invoking MDSAL to install Arp Rquest Match Flow for table {}", NwConstants.L3_GW_MAC_TABLE);
 212         mdsalManager.addFlowToTx(arpReqGwMacTbl, writeFlowTx);
 213         FlowEntity arpRepGwMacTbl = ArpResponderUtil.createArpDefaultFlow(dpId, NwConstants.L3_GW_MAC_TABLE,
 214                 NwConstants.ARP_REPLY, () -> Arrays.asList(MatchEthernetType.ARP, MatchArpOp.REPLY),
 215             () -> Collections.singletonList(new ActionNxResubmit(NwConstants.LPORT_DISPATCHER_TABLE)));
 216         LOG.trace("Invoking MDSAL to install  Arp Reply Match Flow for Table {} ", NwConstants.L3_GW_MAC_TABLE);
 217         mdsalManager.addFlowToTx(arpRepGwMacTbl, writeFlowTx);
 218     }
 219
 220     private String getTableMissFlowRef(BigInteger dpnId, short tableId, int tableMiss) {
 221         return new StringBuffer().append(FLOWID_PREFIX).append(dpnId).append(NwConstants.FLOWID_SEPARATOR)
 222             .append(tableId).append(NwConstants.FLOWID_SEPARATOR).append(tableMiss)
 223             .append(FLOWID_PREFIX).toString();
 224     }
 225 }