2 * Copyright (c) 2016 Intel 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;
19 import static com.google.common.base.Preconditions.checkArgument;
21 import com.google.common.net.InetAddresses;
22 import io.fd.honeycomb.translate.vpp.util.AbstractInterfaceTypeCustomizer;
23 import io.fd.honeycomb.translate.vpp.util.JvppReplyConsumer;
24 import io.fd.honeycomb.translate.vpp.util.NamingContext;
25 import io.fd.honeycomb.translate.write.WriteContext;
26 import io.fd.honeycomb.translate.write.WriteFailedException;
27 import io.fd.vpp.jvpp.core.dto.GreAddDelTunnel;
28 import io.fd.vpp.jvpp.core.dto.GreAddDelTunnelReply;
29 import io.fd.vpp.jvpp.core.future.FutureJVppCore;
30 import java.net.InetAddress;
31 import java.util.concurrent.CompletionStage;
32 import javax.annotation.Nonnull;
33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.InterfaceType;
35 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.GreTunnel;
37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev161214.interfaces._interface.Gre;
38 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
39 import org.slf4j.Logger;
40 import org.slf4j.LoggerFactory;
42 public class GreCustomizer extends AbstractInterfaceTypeCustomizer<Gre> implements JvppReplyConsumer {
44 private static final Logger LOG = LoggerFactory.getLogger(GreCustomizer.class);
45 private final NamingContext interfaceContext;
47 public GreCustomizer(final FutureJVppCore vppApi, final NamingContext interfaceContext) {
49 this.interfaceContext = interfaceContext;
52 private static GreAddDelTunnel getGreTunnelRequest(final byte isAdd, final byte[] srcAddr, final byte[] dstAddr,
53 final int outerFibId, final byte isIpv6) {
54 final GreAddDelTunnel greAddDelTunnel = new GreAddDelTunnel();
55 greAddDelTunnel.isAdd = isAdd;
56 greAddDelTunnel.srcAddress = srcAddr;
57 greAddDelTunnel.dstAddress = dstAddr;
58 greAddDelTunnel.outerFibId = outerFibId;
59 greAddDelTunnel.isIpv6 = isIpv6;
60 return greAddDelTunnel;
64 protected Class<? extends InterfaceType> getExpectedInterfaceType() {
65 return GreTunnel.class;
69 protected final void writeInterface(@Nonnull final InstanceIdentifier<Gre> id, @Nonnull final Gre dataAfter,
70 @Nonnull final WriteContext writeContext)
71 throws WriteFailedException {
72 final String swIfName = id.firstKeyOf(Interface.class).getName();
74 createGreTunnel(id, swIfName, dataAfter, writeContext);
78 public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<Gre> id, @Nonnull final Gre dataBefore,
79 @Nonnull final Gre dataAfter, @Nonnull final WriteContext writeContext)
80 throws WriteFailedException.UpdateFailedException {
81 throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter,
82 new UnsupportedOperationException("Gre tunnel update is not supported"));
86 public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<Gre> id, @Nonnull final Gre dataBefore,
87 @Nonnull final WriteContext writeContext)
88 throws WriteFailedException {
89 final String swIfName = id.firstKeyOf(Interface.class).getName();
90 deleteGreTunnel(id, swIfName, dataBefore, writeContext);
93 private void createGreTunnel(final InstanceIdentifier<Gre> id, final String swIfName, final Gre gre,
94 final WriteContext writeContext) throws WriteFailedException {
95 final byte isIpv6 = (byte) (isIpv6(gre)
98 final InetAddress srcAddress = InetAddresses.forString(getAddressString(gre.getSrc()));
99 final InetAddress dstAddress = InetAddresses.forString(getAddressString(gre.getDst()));
101 int outerFibId = gre.getOuterFibId().intValue();
103 LOG.debug("Setting gre tunnel for interface: {}. Gre: {}", swIfName, gre);
104 final CompletionStage<GreAddDelTunnelReply> greAddDelTunnelReplyCompletionStage =
105 getFutureJVpp().greAddDelTunnel(getGreTunnelRequest((byte) 1 /* is add */, srcAddress.getAddress(),
106 dstAddress.getAddress(), outerFibId, isIpv6));
108 final GreAddDelTunnelReply reply =
109 getReplyForCreate(greAddDelTunnelReplyCompletionStage.toCompletableFuture(), id, gre);
110 LOG.debug("Gre tunnel set successfully for: {}, gre: {}", swIfName, gre);
111 if (interfaceContext.containsName(reply.swIfIndex, writeContext.getMappingContext())) {
112 // VPP keeps gre tunnels present even after they are delete(reserving ID for next tunnel)
113 // This may cause inconsistencies in mapping context when configuring tunnels like this:
114 // 1. Add tunnel 2. Delete tunnel 3. Read interfaces (reserved mapping e.g. gre_tunnel0 -> 6
115 // will get into mapping context) 4. Add tunnel (this will add another mapping with the same
116 // reserved ID and context is invalid)
117 // That's why a check has to be performed here removing mapping gre_tunnel0 -> 6 mapping and storing
118 // new name for that ID
119 final String formerName = interfaceContext.getName(reply.swIfIndex, writeContext.getMappingContext());
120 LOG.debug("Removing updated mapping of a gre tunnel, id: {}, former name: {}, new name: {}",
121 reply.swIfIndex, formerName, swIfName);
122 interfaceContext.removeName(formerName, writeContext.getMappingContext());
124 // Add new interface to our interface context
125 interfaceContext.addName(reply.swIfIndex, swIfName, writeContext.getMappingContext());
128 private boolean isIpv6(final Gre gre) {
129 if (gre.getSrc().getIpv4Address() == null) {
130 checkArgument(gre.getDst().getIpv4Address() == null, "Inconsistent ip addresses: %s, %s", gre.getSrc(),
134 checkArgument(gre.getDst().getIpv6Address() == null, "Inconsistent ip addresses: %s, %s", gre.getSrc(),
140 private String getAddressString(final IpAddress addr) {
141 return addr.getIpv4Address() == null
142 ? addr.getIpv6Address().getValue()
143 : addr.getIpv4Address().getValue();
146 private void deleteGreTunnel(final InstanceIdentifier<Gre> id, final String swIfName, final Gre gre,
147 final WriteContext writeContext) throws WriteFailedException {
148 final byte isIpv6 = (byte) (isIpv6(gre)
151 final InetAddress srcAddress = InetAddresses.forString(getAddressString(gre.getSrc()));
152 final InetAddress dstAddress = InetAddresses.forString(getAddressString(gre.getDst()));
154 int outerFibId = gre.getOuterFibId().intValue();
156 LOG.debug("Deleting gre tunnel for interface: {}. Gre: {}", swIfName, gre);
157 final CompletionStage<GreAddDelTunnelReply> greAddDelTunnelReplyCompletionStage =
158 getFutureJVpp().greAddDelTunnel(getGreTunnelRequest((byte) 0 /* is add */, srcAddress.getAddress(),
159 dstAddress.getAddress(), outerFibId, isIpv6));
161 getReplyForDelete(greAddDelTunnelReplyCompletionStage.toCompletableFuture(), id);
162 LOG.debug("Gre tunnel deleted successfully for: {}, gre: {}", swIfName, gre);
163 // Remove interface from our interface context
164 interfaceContext.removeName(swIfName, writeContext.getMappingContext());