renderers/ofoverlay/src/main/java/org/opendaylight/groupbasedpolicy/renderer/ofoverlay/flow/ExternalMapper.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, 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.groupbasedpolicy.renderer.ofoverlay.flow;
  10
  11 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.applyActionIns;
  12 import static org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow.FlowUtils.instructions;
  13
  14 import java.util.ArrayList;
  15 import java.util.HashMap;
  16 import java.util.List;
  17
  18 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.OfContext;
  19 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.PolicyManager.FlowMap;
  20 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sf.Action;
  21 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sf.AllowAction;
  22 import org.opendaylight.groupbasedpolicy.renderer.ofoverlay.sf.SubjectFeatures;
  23 import org.opendaylight.groupbasedpolicy.resolver.PolicyInfo;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowId;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.MatchBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.Layer3Match;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 /**
  34  * Manage the table that assigns source endpoint group, bridge domain, and
  35  * router domain to registers to be used by other tables.
  36  */
  37 public class ExternalMapper extends FlowTable {
  38
  39     protected static final Logger LOG = LoggerFactory.getLogger(ExternalMapper.class);
  40
  41     public static short TABLE_ID;
  42
  43     public ExternalMapper(OfContext ctx, short tableId) {
  44         super(ctx);
  45         this.TABLE_ID=tableId;
  46     }
  47
  48     @Override
  49     public short getTableId() {
  50         return TABLE_ID;
  51     }
  52
  53     @Override
  54     public void sync(NodeId nodeId, PolicyInfo policyInfo, FlowMap flowMap) throws Exception {
  55
  56         if (ctx.getSwitchManager().getExternalPorts(nodeId) == null) {
  57             LOG.trace("No external ports found for node: {}", nodeId);
  58             return;
  59         }
  60         // Default drop all
  61         flowMap.writeFlow(nodeId, TABLE_ID, dropFlow(Integer.valueOf(1), null));
  62
  63         // Drop IP traffic that doesn't match a source IP rule
  64         flowMap.writeFlow(nodeId, TABLE_ID, dropFlow(Integer.valueOf(2), FlowUtils.ARP));
  65         flowMap.writeFlow(nodeId, TABLE_ID, dropFlow(Integer.valueOf(2), FlowUtils.IPv4));
  66         flowMap.writeFlow(nodeId, TABLE_ID, dropFlow(Integer.valueOf(2), FlowUtils.IPv6));
  67         l3flow(flowMap,nodeId, 100, true);
  68         l3flow(flowMap,nodeId, 200, false);
  69     }
  70
  71     private void l3flow(FlowMap flowMap, NodeId nodeId, Integer priority, boolean arp) {
  72
  73         List<ActionBuilder> actionBuilderList = new ArrayList<ActionBuilder>();
  74
  75         Action action = SubjectFeatures.getAction(AllowAction.DEFINITION.getId());
  76         actionBuilderList = action.updateAction(actionBuilderList, new HashMap<String, Object>(), 0, null);
  77
  78         Layer3Match m = null;
  79         Long etherType = null;
  80
  81         if (arp) {
  82             etherType = FlowUtils.ARP;
  83         } else {
  84             etherType = FlowUtils.IPv4;
  85         }
  86
  87         FlowId flowid = new FlowId(new StringBuilder().append("ExternalMapper")
  88             .append("|")
  89             .append(etherType)
  90             .toString());
  91         Flow flow = base().setPriority(priority)
  92             .setId(flowid)
  93             .setMatch(
  94                     new MatchBuilder().setEthernetMatch(FlowUtils.ethernetMatch(null, null, etherType))
  95                         .setLayer3Match(m)
  96                         .build())
  97             .setInstructions(instructions(applyActionIns(actionBuilderList)))
  98             .build();
  99
 100         flowMap.writeFlow(nodeId, TABLE_ID, flow);
 101     }
 102 }