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