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.v3po.util.AbstractInterfaceTypeCustomizer;
23 import io.fd.honeycomb.translate.v3po.util.NamingContext;
24 import io.fd.honeycomb.translate.v3po.util.TranslateUtils;
25 import io.fd.honeycomb.translate.v3po.util.WriteTimeoutException;
26 import io.fd.honeycomb.translate.write.WriteContext;
27 import io.fd.honeycomb.translate.write.WriteFailedException;
28 import java.net.InetAddress;
29 import java.util.concurrent.CompletionStage;
30 import javax.annotation.Nonnull;
31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.InterfaceType;
33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.GreTunnel;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces._interface.Gre;
36 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
37 import org.openvpp.jvpp.VppBaseCallException;
38 import org.openvpp.jvpp.dto.GreAddDelTunnel;
39 import org.openvpp.jvpp.dto.GreAddDelTunnelReply;
40 import org.openvpp.jvpp.future.FutureJVpp;
41 import org.slf4j.Logger;
42 import org.slf4j.LoggerFactory;
44 public class GreCustomizer extends AbstractInterfaceTypeCustomizer<Gre> {
46 private static final Logger LOG = LoggerFactory.getLogger(GreCustomizer.class);
47 private final NamingContext interfaceContext;
49 public GreCustomizer(final FutureJVpp vppApi, final NamingContext interfaceContext) {
51 this.interfaceContext = interfaceContext;
55 protected Class<? extends InterfaceType> getExpectedInterfaceType() {
56 return GreTunnel.class;
60 protected final void writeInterface(@Nonnull final InstanceIdentifier<Gre> id, @Nonnull final Gre dataAfter,
61 @Nonnull final WriteContext writeContext)
62 throws WriteFailedException {
63 final String swIfName = id.firstKeyOf(Interface.class).getName();
65 createGreTunnel(id, swIfName, dataAfter, writeContext);
66 } catch (VppBaseCallException | IllegalInterfaceTypeException e) {
67 LOG.warn("Failed to set gre tunnel for interface: {}, gre: {}", swIfName, dataAfter, e);
68 throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
73 public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<Gre> id, @Nonnull final Gre dataBefore,
74 @Nonnull final Gre dataAfter, @Nonnull final WriteContext writeContext)
75 throws WriteFailedException.UpdateFailedException {
76 throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter,
77 new UnsupportedOperationException("Gre tunnel update is not supported"));
81 public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<Gre> id, @Nonnull final Gre dataBefore,
82 @Nonnull final WriteContext writeContext)
83 throws WriteFailedException {
84 final String swIfName = id.firstKeyOf(Interface.class).getName();
86 deleteGreTunnel(id, swIfName, dataBefore, writeContext);
87 } catch (VppBaseCallException e) {
88 LOG.debug("Failed to delete gre tunnel for interface: {}, gre: {}", swIfName, dataBefore);
89 throw new WriteFailedException.DeleteFailedException(id, e);
93 private void createGreTunnel(final InstanceIdentifier<Gre> id, final String swIfName, final Gre gre,
94 final WriteContext writeContext) throws VppBaseCallException, WriteTimeoutException {
95 final byte isIpv6 = (byte) (isIpv6(gre) ? 1 : 0);
96 final InetAddress srcAddress = InetAddresses.forString(getAddressString(gre.getSrc()));
97 final InetAddress dstAddress = InetAddresses.forString(getAddressString(gre.getDst()));
99 int outerFibId = gre.getOuterFibId().intValue();
101 LOG.debug("Setting gre tunnel for interface: {}. Gre: {}", swIfName, gre);
102 final CompletionStage<GreAddDelTunnelReply> greAddDelTunnelReplyCompletionStage =
103 getFutureJVpp().greAddDelTunnel(getGreTunnelRequest((byte) 1 /* is add */, srcAddress.getAddress(),
104 dstAddress.getAddress(), outerFibId, isIpv6));
106 final GreAddDelTunnelReply reply =
107 TranslateUtils.getReplyForWrite(greAddDelTunnelReplyCompletionStage.toCompletableFuture(), id);
108 LOG.debug("Gre tunnel set successfully for: {}, gre: {}", swIfName, gre);
109 if(interfaceContext.containsName(reply.swIfIndex, writeContext.getMappingContext())) {
110 // VPP keeps gre tunnels present even after they are delete(reserving ID for next tunnel)
111 // This may cause inconsistencies in mapping context when configuring tunnels like this:
112 // 1. Add tunnel 2. Delete tunnel 3. Read interfaces (reserved mapping e.g. gre_tunnel0 -> 6
113 // will get into mapping context) 4. Add tunnel (this will add another mapping with the same
114 // reserved ID and context is invalid)
115 // That's why a check has to be performed here removing mapping gre_tunnel0 -> 6 mapping and storing
116 // new name for that ID
117 final String formerName = interfaceContext.getName(reply.swIfIndex, writeContext.getMappingContext());
118 LOG.debug("Removing updated mapping of a gre tunnel, id: {}, former name: {}, new name: {}",
119 reply.swIfIndex, formerName, swIfName);
120 interfaceContext.removeName(formerName, writeContext.getMappingContext());
122 // Add new interface to our interface context
123 interfaceContext.addName(reply.swIfIndex, swIfName, writeContext.getMappingContext());
126 private boolean isIpv6(final Gre gre) {
127 if (gre.getSrc().getIpv4Address() == null) {
128 checkArgument(gre.getDst().getIpv4Address() == null, "Inconsistent ip addresses: %s, %s", gre.getSrc(),
132 checkArgument(gre.getDst().getIpv6Address() == null, "Inconsistent ip addresses: %s, %s", gre.getSrc(),
138 private String getAddressString(final IpAddress addr) {
139 return addr.getIpv4Address() == null ? addr.getIpv6Address().getValue() : addr.getIpv4Address().getValue();
142 private void deleteGreTunnel(final InstanceIdentifier<Gre> id, final String swIfName, final Gre gre,
143 final WriteContext writeContext) throws VppBaseCallException, WriteTimeoutException {
144 final byte isIpv6 = (byte) (isIpv6(gre) ? 1 : 0);
145 final InetAddress srcAddress = InetAddresses.forString(getAddressString(gre.getSrc()));
146 final InetAddress dstAddress = InetAddresses.forString(getAddressString(gre.getDst()));
148 int outerFibId = gre.getOuterFibId().intValue();
150 LOG.debug("Deleting gre tunnel for interface: {}. Gre: {}", swIfName, gre);
151 final CompletionStage<GreAddDelTunnelReply> greAddDelTunnelReplyCompletionStage =
152 getFutureJVpp().greAddDelTunnel(getGreTunnelRequest((byte) 0 /* is add */, srcAddress.getAddress(),
153 dstAddress.getAddress(), outerFibId, isIpv6));
155 TranslateUtils.getReplyForWrite(greAddDelTunnelReplyCompletionStage.toCompletableFuture(), id);
156 LOG.debug("Gre tunnel deleted successfully for: {}, gre: {}", swIfName, gre);
157 // Remove interface from our interface context
158 interfaceContext.removeName(swIfName, writeContext.getMappingContext());
161 private static GreAddDelTunnel getGreTunnelRequest(final byte isAdd, final byte[] srcAddr, final byte[] dstAddr,
162 final int outerFibId, final byte isIpv6) {
163 final GreAddDelTunnel greAddDelTunnel = new GreAddDelTunnel();
164 greAddDelTunnel.isAdd = isAdd;
165 greAddDelTunnel.srcAddress = srcAddr;
166 greAddDelTunnel.dstAddress = dstAddr;
167 greAddDelTunnel.outerFibId = outerFibId;
168 greAddDelTunnel.isIpv6 = isIpv6;
169 return greAddDelTunnel;