2 * Copyright (c) 2016 Cisco and/or its affiliates.
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:
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package io.fd.honeycomb.translate.v3po.interfaces.acl.common;
19 import static com.google.common.base.Preconditions.checkArgument;
21 import com.google.common.annotations.VisibleForTesting;
22 import io.fd.vpp.jvpp.core.dto.ClassifyAddDelSession;
23 import io.fd.vpp.jvpp.core.dto.ClassifyAddDelTable;
24 import java.util.ArrayList;
25 import java.util.List;
26 import javax.annotation.Nonnull;
27 import javax.annotation.Nullable;
28 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;
29 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.AceIp;
30 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.ace.ip.ace.ip.version.AceIpv4;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.acl.rev161214.InterfaceMode;
32 import org.slf4j.Logger;
33 import org.slf4j.LoggerFactory;
35 final class AceIp4Writer implements AceWriter<AceIp>, AclTranslator, Ip4AclTranslator {
38 static final int MATCH_N_VECTORS = 3; // number of 16B vectors
39 private static final int TABLE_MASK_LENGTH = 48;
40 private static final Logger LOG = LoggerFactory.getLogger(AceIp4Writer.class);
43 public ClassifyAddDelTable createTable(@Nonnull final AceIp aceIp,
44 @Nullable final InterfaceMode mode,
45 final int nextTableIndex,
47 checkArgument(aceIp.getAceIpVersion() instanceof AceIpv4, "Expected AceIpv4 version, but was %", aceIp);
48 final AceIpv4 ipVersion = (AceIpv4) aceIp.getAceIpVersion();
50 final int numberOfSessions = PortPair.fromRange(aceIp.getSourcePortRange(), aceIp.getDestinationPortRange()).size();
51 final ClassifyAddDelTable request = createTable(nextTableIndex, numberOfSessions);
52 request.skipNVectors = 0; // match entire L2 and L3 header
53 request.matchNVectors = MATCH_N_VECTORS;
54 request.mask = new byte[TABLE_MASK_LENGTH];
56 final int baseOffset = getVlanTagsLen(vlanTags);
57 boolean aceIsEmpty = ip4Mask(baseOffset, mode, aceIp, ipVersion, request);
59 throw new IllegalArgumentException(
60 String.format("Ace %s does not define packet field match values", aceIp.toString()));
63 LOG.debug("ACE rule={} translated to table={}.", aceIp, request);
68 public List<ClassifyAddDelSession> createSession(@Nonnull final PacketHandling action,
69 @Nonnull final AceIp aceIp,
70 @Nullable final InterfaceMode mode,
73 checkArgument(aceIp.getAceIpVersion() instanceof AceIpv4, "Expected AceIpv4 version, but was %", aceIp);
74 final AceIpv4 ipVersion = (AceIpv4) aceIp.getAceIpVersion();
76 final List<PortPair> portPairs = PortPair.fromRange(aceIp.getSourcePortRange(), aceIp.getDestinationPortRange());
77 final List<ClassifyAddDelSession> requests = new ArrayList<>(portPairs.size());
78 for (final PortPair pair : portPairs) {
79 final ClassifyAddDelSession request = createSession(action, tableIndex);
80 request.match = new byte[TABLE_MASK_LENGTH];
82 final int baseOffset = getVlanTagsLen(vlanTags);
83 boolean noMatch = ip4Match(baseOffset, mode, aceIp, ipVersion, pair.getSrc(), pair.getDst(), request);
85 throw new IllegalArgumentException(
86 String.format("Ace %s does not define packet field match values", aceIp.toString()));
89 LOG.debug("ACE action={}, rule={} translated to session={}.", action, aceIp, request);
90 requests.add(request);