2 * Copyright (c) 2017 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.hc2vpp.vpp.classifier.write.acl.common;
19 import static com.google.common.base.Preconditions.checkArgument;
21 import io.fd.vpp.jvpp.core.dto.ClassifyAddDelSession;
22 import io.fd.vpp.jvpp.core.dto.ClassifyAddDelTable;
23 import java.util.ArrayList;
24 import java.util.List;
25 import javax.annotation.Nonnull;
26 import javax.annotation.Nullable;
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.actions.PacketHandling;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev170315.InterfaceMode;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev170315.access.lists.acl.access.list.entries.ace.matches.ace.type.AceIpAndEth;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev170315.access.lists.acl.access.list.entries.ace.matches.ace.type.ace.ip.and.eth.AceIpAndEthNodes;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev170315.access.lists.acl.access.list.entries.ace.matches.ace.type.ace.ip.and.eth.ace.ip.and.eth.nodes.AceIpVersion;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev170315.access.lists.acl.access.list.entries.ace.matches.ace.type.ace.ip.and.eth.ace.ip.and.eth.nodes.ace.ip.version.AceIpv4;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.acl.rev170315.access.lists.acl.access.list.entries.ace.matches.ace.type.ace.ip.and.eth.ace.ip.and.eth.nodes.ace.ip.version.AceIpv6;
34 import org.slf4j.Logger;
35 import org.slf4j.LoggerFactory;
37 public final class AceIpAndEthWriter
38 implements AceWriter<AceIpAndEth>, AclTranslator, L2AclTranslator, Ip4AclTranslator, Ip6AclTranslator {
40 private static final Logger LOG = LoggerFactory.getLogger(AceIpAndEthWriter.class);
42 private static int maskLength(@Nonnull final AceIpAndEth ace, final int vlanTags) {
43 if (ace.getAceIpAndEthNodes().getAceIpVersion() != null) {
44 if (ace.getAceIpAndEthNodes().getAceIpVersion() instanceof AceIpv4) {
56 public ClassifyAddDelTable createTable(@Nonnull final AceIpAndEth ace, @Nullable final InterfaceMode mode,
57 final int nextTableIndex, final int vlanTags) {
58 final AceIpAndEthNodes nodes = ace.getAceIpAndEthNodes();
59 final int numberOfSessions = PortPair.fromRange(nodes.getSourcePortRange(), nodes.getDestinationPortRange()).size();
60 final ClassifyAddDelTable request = createTable(nextTableIndex, numberOfSessions);
61 final int maskLength = maskLength(ace, vlanTags);
62 request.mask = new byte[maskLength];
63 request.skipNVectors = 0;
64 request.matchNVectors = maskLength / 16;
67 destinationMacAddressMask(nodes.getDestinationMacAddressMask(), nodes.getDestinationMacAddress(), request);
68 aceIsEmpty &= sourceMacAddressMask(nodes.getSourceMacAddressMask(), nodes.getSourceMacAddress(), request);
70 // if we use classifier API, we need to know ip version (fields common for ip4 and ip6 have different offsets):
71 final AceIpVersion aceIpVersion = nodes.getAceIpVersion();
72 checkArgument(aceIpVersion != null, "AceIpAndEth have to define IpVersion");
74 final int baseOffset = getVlanTagsLen(vlanTags);
75 if (aceIpVersion instanceof AceIpv4) {
76 final AceIpv4 ipVersion = (AceIpv4) aceIpVersion;
77 aceIsEmpty &= ip4Mask(baseOffset, mode, nodes, ipVersion, request);
78 } else if (aceIpVersion instanceof AceIpv6) {
79 final AceIpv6 ipVersion = (AceIpv6) aceIpVersion;
80 aceIsEmpty &= ip6Mask(baseOffset, mode, nodes, ipVersion, request);
82 throw new IllegalArgumentException(String.format("Unsupported IP version %s", aceIpVersion));
86 throw new IllegalArgumentException(
87 String.format("Ace %s does not define packet field match values", ace.toString()));
90 LOG.debug("ACE rule={} translated to table={}.", ace, request);
95 public List<ClassifyAddDelSession> createSession(@Nonnull final PacketHandling action,
96 @Nonnull final AceIpAndEth ace,
97 @Nullable final InterfaceMode mode, final int tableIndex,
99 final AceIpAndEthNodes nodes = ace.getAceIpAndEthNodes();
100 final List<PortPair> portPairs = PortPair.fromRange(nodes.getSourcePortRange(), nodes.getDestinationPortRange());
101 final List<ClassifyAddDelSession> requests = new ArrayList<>(portPairs.size());
102 for (final PortPair pair : portPairs) {
103 final ClassifyAddDelSession request = createSession(action, tableIndex);
104 request.match = new byte[maskLength(ace, vlanTags)];
106 boolean noMatch = destinationMacAddressMatch(nodes.getDestinationMacAddress(), request);
107 noMatch &= sourceMacAddressMatch(nodes.getSourceMacAddress(), request);
109 final AceIpVersion aceIpVersion = nodes.getAceIpVersion();
110 checkArgument(aceIpVersion != null, "AceIpAndEth have to define IpVersion");
112 final int baseOffset = getVlanTagsLen(vlanTags);
113 if (aceIpVersion instanceof AceIpv4) {
114 final AceIpv4 ipVersion = (AceIpv4) aceIpVersion;
115 noMatch &= ip4Match(baseOffset, mode, nodes, ipVersion, pair.getSrc(), pair.getDst(), request);
116 } else if (aceIpVersion instanceof AceIpv6) {
117 final AceIpv6 ipVersion = (AceIpv6) aceIpVersion;
118 noMatch &= ip6Match(baseOffset, mode, nodes, ipVersion, pair.getSrc(), pair.getDst(), request);
120 throw new IllegalArgumentException(String.format("Unsupported IP version %s", aceIpVersion));
124 throw new IllegalArgumentException(
125 String.format("Ace %s does not define packet field match values", ace.toString()));
127 LOG.debug("ACE action={}, rule={} translated to session={}.", action, ace, request);
128 requests.add(request);