openflowplugin/src/main/java/org/opendaylight/openflowplugin/openflow/md/core/sal/convertor/match/cases/OfToSalTunnelIpv4SrcCase.java

   1 /*
   2  * Copyright (c) 2016 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.openflowplugin.openflow.md.core.sal.convertor.match.cases;
  10
  11 import java.nio.ByteBuffer;
  12 import java.util.Optional;
  13 import javax.annotation.Nonnull;
  14 import org.opendaylight.openflowplugin.api.OFConstants;
  15 import org.opendaylight.openflowplugin.openflow.md.core.sal.convertor.common.ConvertorCase;
  16 import org.opendaylight.openflowplugin.openflow.md.core.sal.convertor.common.IpConversionUtil;
  17 import org.opendaylight.openflowplugin.openflow.md.core.sal.convertor.match.data.MatchResponseConvertorData;
  18 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
  19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.flow.MatchBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.Ipv4MatchBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.match.layer._3.match.TunnelIpv4MatchBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.Ipv4SrcCase;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entry.value.grouping.match.entry.value.ipv4.src._case.Ipv4Src;
  25
  26 public class OfToSalTunnelIpv4SrcCase extends ConvertorCase<Ipv4SrcCase, MatchBuilder, MatchResponseConvertorData> {
  27     public OfToSalTunnelIpv4SrcCase() {
  28         super(Ipv4SrcCase.class, true, OFConstants.OFP_VERSION_1_0, OFConstants.OFP_VERSION_1_3);
  29     }
  30
  31     @Override
  32     public Optional<MatchBuilder> process(@Nonnull Ipv4SrcCase source, MatchResponseConvertorData data) {
  33         final MatchBuilder matchBuilder = data.getMatchBuilder();
  34         final Ipv4MatchBuilder ipv4MatchBuilder = data.getIpv4MatchBuilder();
  35         final TunnelIpv4MatchBuilder tunnelIpv4MatchBuilder = data.getTunnelIpv4MatchBuilder();
  36
  37         Ipv4Src tunnelIpv4Dst = source.getIpv4Src();
  38
  39         if (tunnelIpv4Dst != null) {
  40             String ipv4PrefixStr = tunnelIpv4Dst.getIpv4Address().getValue();
  41             byte[] mask = tunnelIpv4Dst.getMask();
  42             ipv4PrefixStr += IpConversionUtil.PREFIX_SEPARATOR + ByteBuffer.wrap(tunnelIpv4Dst.getMask()).getInt();
  43
  44             final Ipv4Prefix ipv4Prefix;
  45             if (mask != null) {
  46                 ipv4Prefix = IpConversionUtil.createPrefix(new Ipv4Address(ipv4PrefixStr), mask);
  47             } else {
  48                 //Openflow Spec : 1.3.2
  49                 //An all-one-bits oxm_mask is equivalent to specifying 0 for oxm_hasmask and omitting oxm_mask.
  50                 // So when user specify 32 as a mast, switch omit that mast and we get null as a mask in flow
  51                 // statistics response.
  52                 ipv4Prefix = IpConversionUtil.createPrefix(new Ipv4Address(ipv4PrefixStr));
  53             }
  54
  55             ipv4MatchBuilder.setIpv4Source(ipv4Prefix);
  56             matchBuilder.setLayer3Match(tunnelIpv4MatchBuilder.build());
  57         }
  58
  59         return Optional.of(matchBuilder);
  60     }
  61 }