v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/acl/common/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.common;
  18
  19 import com.google.common.annotations.VisibleForTesting;
  20 import io.fd.vpp.jvpp.core.dto.ClassifyAddDelSession;
  21 import io.fd.vpp.jvpp.core.dto.ClassifyAddDelTable;
  22 import java.util.Collections;
  23 import java.util.List;
  24 import javax.annotation.Nonnull;
  25 import javax.annotation.Nullable;
  26 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;
  27 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;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.acl.rev161214.InterfaceMode;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 final class AceEthWriter implements AceWriter<AceEth>, AclTranslator, L2AclTranslator {
  33
  34     @VisibleForTesting
  35     static final int MATCH_N_VECTORS = 1;
  36     private static final Logger LOG = LoggerFactory.getLogger(AceEthWriter.class);
  37
  38     @Override
  39     public ClassifyAddDelTable createTable(@Nonnull final AceEth aceEth,
  40                                            @Nullable final InterfaceMode mode,
  41                                            final int nextTableIndex,
  42                                            final int vlanTags) {
  43         final ClassifyAddDelTable request = createTable(nextTableIndex);
  44
  45         request.mask = new byte[16];
  46         boolean aceIsEmpty =
  47             destinationMacAddressMask(aceEth.getDestinationMacAddressMask(), aceEth.getDestinationMacAddress(),
  48                 request);
  49         aceIsEmpty &=
  50             sourceMacAddressMask(aceEth.getSourceMacAddressMask(), aceEth.getSourceMacAddress(), request);
  51
  52         if (aceIsEmpty) {
  53             throw new IllegalArgumentException(
  54                 String.format("Ace %s does not define packet field match values", aceEth.toString()));
  55         }
  56
  57         request.skipNVectors = 0;
  58         request.matchNVectors = MATCH_N_VECTORS;
  59
  60         LOG.debug("ACE rule={} translated to table={}.", aceEth, request);
  61         return request;
  62     }
  63
  64     @Override
  65     public List<ClassifyAddDelSession> createSession(@Nonnull final PacketHandling action,
  66                                                      @Nonnull final AceEth aceEth,
  67                                                      @Nullable final InterfaceMode mode,
  68                                                      final int tableIndex,
  69                                                      final int vlanTags) {
  70         final ClassifyAddDelSession request = createSession(action, tableIndex);
  71
  72         request.match = new byte[16];
  73         boolean noMatch = destinationMacAddressMatch(aceEth.getDestinationMacAddress(), request);
  74         noMatch &= sourceMacAddressMatch(aceEth.getSourceMacAddress(), request);
  75
  76         if (noMatch) {
  77             throw new IllegalArgumentException(
  78                 String.format("Ace %s does not define neither source nor destination MAC address",
  79                     aceEth.toString()));
  80         }
  81
  82         LOG.debug("ACE action={}, rule={} translated to session={}.", action, aceEth, request);
  83         return Collections.singletonList(request);
  84     }
  85 }