v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/acl/ingress/AceEthWriter.java

   1 /*
   2  * Copyright (c) 2016 Cisco and/or its affiliates.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package io.fd.honeycomb.translate.v3po.interfaces.acl.ingress;
  18
  19 import com.google.common.annotations.VisibleForTesting;
  20 import io.fd.honeycomb.translate.vpp.util.MacTranslator;
  21 import java.util.List;
  22 import javax.annotation.Nonnull;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.actions.PacketHandling;
  24 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.matches.ace.type.AceEth;
  25 import io.fd.vpp.jvpp.core.dto.ClassifyAddDelSession;
  26 import io.fd.vpp.jvpp.core.dto.ClassifyAddDelTable;
  27 import io.fd.vpp.jvpp.core.dto.InputAclSetInterface;
  28 import io.fd.vpp.jvpp.core.future.FutureJVppCore;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 final class AceEthWriter extends AbstractAceWriter<AceEth> implements MacTranslator {
  33
  34     @VisibleForTesting
  35     static final int MATCH_N_VECTORS = 1;
  36     private static final Logger LOG = LoggerFactory.getLogger(AceEthWriter.class);
  37
  38     public AceEthWriter(@Nonnull final FutureJVppCore futureJVppCore) {
  39         super(futureJVppCore);
  40     }
  41
  42     @Override
  43     public ClassifyAddDelTable createClassifyTable(@Nonnull final PacketHandling action,
  44                                                    @Nonnull final AceEth aceEth,
  45                                                    @Nonnull final int nextTableIndex,
  46                                                    final int vlanTags) {
  47         final ClassifyAddDelTable request = createClassifyTable(action, nextTableIndex);
  48
  49         request.mask = new byte[16];
  50         boolean aceIsEmpty = true;
  51
  52         // destination-mac-address or destination-mac-address-mask is present =>
  53         // ff:ff:ff:ff:ff:ff:00:00:00:00:00:00:00:00:00:00
  54         if (aceEth.getDestinationMacAddressMask() != null) {
  55             aceIsEmpty = false;
  56             final String macAddress = aceEth.getDestinationMacAddressMask().getValue();
  57             final List<String> parts = COLON_SPLITTER.splitToList(macAddress);
  58             int i = 0;
  59             for (String part : parts) {
  60                 request.mask[i++] = parseHexByte(part);
  61             }
  62         } else if (aceEth.getDestinationMacAddress() != null) {
  63             aceIsEmpty = false;
  64             for (int i = 0; i < 6; ++i) {
  65                 request.mask[i] = (byte) 0xff;
  66             }
  67         }
  68
  69         // source-mac-address or source-mac-address-mask =>
  70         // 00:00:00:00:00:00:ff:ff:ff:ff:ff:ff:00:00:00:00
  71         if (aceEth.getSourceMacAddressMask() != null) {
  72             aceIsEmpty = false;
  73             final String macAddress = aceEth.getSourceMacAddressMask().getValue();
  74             final List<String> parts = COLON_SPLITTER.splitToList(macAddress);
  75             int i = 6;
  76             for (String part : parts) {
  77                 request.mask[i++] = parseHexByte(part);
  78             }
  79         } else if (aceEth.getSourceMacAddress() != null) {
  80             aceIsEmpty = false;
  81             for (int i = 6; i < 12; ++i) {
  82                 request.mask[i] = (byte) 0xff;
  83             }
  84         }
  85
  86         if (aceIsEmpty) {
  87             throw new IllegalArgumentException(
  88                     String.format("Ace %s does not define packet field match values", aceEth.toString()));
  89         }
  90
  91         request.skipNVectors = 0;
  92         request.matchNVectors = MATCH_N_VECTORS;
  93
  94         LOG.debug("ACE action={}, rule={} translated to table={}.", action, aceEth, request);
  95         return request;
  96     }
  97
  98     @Override
  99     public ClassifyAddDelSession createClassifySession(@Nonnull final PacketHandling action,
 100                                                        @Nonnull final AceEth aceEth,
 101                                                        @Nonnull final int tableIndex,
 102                                                        final int vlanTags) {
 103         final ClassifyAddDelSession request = createClassifySession(action, tableIndex);
 104
 105         request.match = new byte[16];
 106         boolean noMatch = true;
 107
 108         if (aceEth.getDestinationMacAddress() != null) {
 109             noMatch = false;
 110             final String macAddress = aceEth.getDestinationMacAddress().getValue();
 111             final List<String> parts = COLON_SPLITTER.splitToList(macAddress);
 112             int i = 0;
 113             for (String part : parts) {
 114                 request.match[i++] = parseHexByte(part);
 115             }
 116         }
 117
 118         if (aceEth.getSourceMacAddress() != null) {
 119             noMatch = false;
 120             final String macAddress = aceEth.getSourceMacAddress().getValue();
 121             final List<String> parts = COLON_SPLITTER.splitToList(macAddress);
 122             int i = 6;
 123             for (String part : parts) {
 124                 request.match[i++] = parseHexByte(part);
 125             }
 126         }
 127
 128         if (noMatch) {
 129             throw new IllegalArgumentException(
 130                     String.format("Ace %s does not define neither source nor destination MAC address",
 131                             aceEth.toString()));
 132         }
 133
 134         LOG.debug("ACE action={}, rule={} translated to session={}.", action, aceEth, request);
 135         return request;
 136     }
 137
 138     @Override
 139     protected void setClassifyTable(@Nonnull final InputAclSetInterface request, final int tableIndex) {
 140         request.l2TableIndex = tableIndex;
 141     }
 142 }