1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/*
* Copyright (c) 2016 Intel and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.fd.honeycomb.translate.v3po.interfaces;
import static com.google.common.base.Preconditions.checkArgument;
import com.google.common.net.InetAddresses;
import io.fd.honeycomb.translate.v3po.util.AbstractInterfaceTypeCustomizer;
import io.fd.honeycomb.translate.v3po.util.JvppReplyConsumer;
import io.fd.honeycomb.translate.v3po.util.NamingContext;
import io.fd.honeycomb.translate.v3po.util.WriteTimeoutException;
import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.write.WriteFailedException;
import java.net.InetAddress;
import java.util.concurrent.CompletionStage;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.InterfaceType;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.GreTunnel;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces._interface.Gre;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.openvpp.jvpp.VppBaseCallException;
import org.openvpp.jvpp.core.dto.GreAddDelTunnel;
import org.openvpp.jvpp.core.dto.GreAddDelTunnelReply;
import org.openvpp.jvpp.core.future.FutureJVppCore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class GreCustomizer extends AbstractInterfaceTypeCustomizer<Gre> implements JvppReplyConsumer {
private static final Logger LOG = LoggerFactory.getLogger(GreCustomizer.class);
private final NamingContext interfaceContext;
public GreCustomizer(final FutureJVppCore vppApi, final NamingContext interfaceContext) {
super(vppApi);
this.interfaceContext = interfaceContext;
}
private static GreAddDelTunnel getGreTunnelRequest(final byte isAdd, final byte[] srcAddr, final byte[] dstAddr,
final int outerFibId, final byte isIpv6) {
final GreAddDelTunnel greAddDelTunnel = new GreAddDelTunnel();
greAddDelTunnel.isAdd = isAdd;
greAddDelTunnel.srcAddress = srcAddr;
greAddDelTunnel.dstAddress = dstAddr;
greAddDelTunnel.outerFibId = outerFibId;
greAddDelTunnel.isIpv6 = isIpv6;
return greAddDelTunnel;
}
@Override
protected Class<? extends InterfaceType> getExpectedInterfaceType() {
return GreTunnel.class;
}
@Override
protected final void writeInterface(@Nonnull final InstanceIdentifier<Gre> id, @Nonnull final Gre dataAfter,
@Nonnull final WriteContext writeContext)
throws WriteFailedException {
final String swIfName = id.firstKeyOf(Interface.class).getName();
try {
createGreTunnel(id, swIfName, dataAfter, writeContext);
} catch (VppBaseCallException | IllegalInterfaceTypeException e) {
LOG.warn("Failed to set gre tunnel for interface: {}, gre: {}", swIfName, dataAfter, e);
throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
}
}
@Override
public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<Gre> id, @Nonnull final Gre dataBefore,
@Nonnull final Gre dataAfter, @Nonnull final WriteContext writeContext)
throws WriteFailedException.UpdateFailedException {
throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter,
new UnsupportedOperationException("Gre tunnel update is not supported"));
}
@Override
public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<Gre> id, @Nonnull final Gre dataBefore,
@Nonnull final WriteContext writeContext)
throws WriteFailedException {
final String swIfName = id.firstKeyOf(Interface.class).getName();
try {
deleteGreTunnel(id, swIfName, dataBefore, writeContext);
} catch (VppBaseCallException e) {
LOG.debug("Failed to delete gre tunnel for interface: {}, gre: {}", swIfName, dataBefore);
throw new WriteFailedException.DeleteFailedException(id, e);
}
}
private void createGreTunnel(final InstanceIdentifier<Gre> id, final String swIfName, final Gre gre,
final WriteContext writeContext) throws VppBaseCallException, WriteTimeoutException {
final byte isIpv6 = (byte) (isIpv6(gre)
? 1
: 0);
final InetAddress srcAddress = InetAddresses.forString(getAddressString(gre.getSrc()));
final InetAddress dstAddress = InetAddresses.forString(getAddressString(gre.getDst()));
int outerFibId = gre.getOuterFibId().intValue();
LOG.debug("Setting gre tunnel for interface: {}. Gre: {}", swIfName, gre);
final CompletionStage<GreAddDelTunnelReply> greAddDelTunnelReplyCompletionStage =
getFutureJVpp().greAddDelTunnel(getGreTunnelRequest((byte) 1 /* is add */, srcAddress.getAddress(),
dstAddress.getAddress(), outerFibId, isIpv6));
final GreAddDelTunnelReply reply =
getReplyForWrite(greAddDelTunnelReplyCompletionStage.toCompletableFuture(), id);
LOG.debug("Gre tunnel set successfully for: {}, gre: {}", swIfName, gre);
if (interfaceContext.containsName(reply.swIfIndex, writeContext.getMappingContext())) {
// VPP keeps gre tunnels present even after they are delete(reserving ID for next tunnel)
// This may cause inconsistencies in mapping context when configuring tunnels like this:
// 1. Add tunnel 2. Delete tunnel 3. Read interfaces (reserved mapping e.g. gre_tunnel0 -> 6
// will get into mapping context) 4. Add tunnel (this will add another mapping with the same
// reserved ID and context is invalid)
// That's why a check has to be performed here removing mapping gre_tunnel0 -> 6 mapping and storing
// new name for that ID
final String formerName = interfaceContext.getName(reply.swIfIndex, writeContext.getMappingContext());
LOG.debug("Removing updated mapping of a gre tunnel, id: {}, former name: {}, new name: {}",
reply.swIfIndex, formerName, swIfName);
interfaceContext.removeName(formerName, writeContext.getMappingContext());
}
// Add new interface to our interface context
interfaceContext.addName(reply.swIfIndex, swIfName, writeContext.getMappingContext());
}
private boolean isIpv6(final Gre gre) {
if (gre.getSrc().getIpv4Address() == null) {
checkArgument(gre.getDst().getIpv4Address() == null, "Inconsistent ip addresses: %s, %s", gre.getSrc(),
gre.getDst());
return true;
} else {
checkArgument(gre.getDst().getIpv6Address() == null, "Inconsistent ip addresses: %s, %s", gre.getSrc(),
gre.getDst());
return false;
}
}
private String getAddressString(final IpAddress addr) {
return addr.getIpv4Address() == null
? addr.getIpv6Address().getValue()
: addr.getIpv4Address().getValue();
}
private void deleteGreTunnel(final InstanceIdentifier<Gre> id, final String swIfName, final Gre gre,
final WriteContext writeContext) throws VppBaseCallException, WriteTimeoutException {
final byte isIpv6 = (byte) (isIpv6(gre)
? 1
: 0);
final InetAddress srcAddress = InetAddresses.forString(getAddressString(gre.getSrc()));
final InetAddress dstAddress = InetAddresses.forString(getAddressString(gre.getDst()));
int outerFibId = gre.getOuterFibId().intValue();
LOG.debug("Deleting gre tunnel for interface: {}. Gre: {}", swIfName, gre);
final CompletionStage<GreAddDelTunnelReply> greAddDelTunnelReplyCompletionStage =
getFutureJVpp().greAddDelTunnel(getGreTunnelRequest((byte) 0 /* is add */, srcAddress.getAddress(),
dstAddress.getAddress(), outerFibId, isIpv6));
getReplyForWrite(greAddDelTunnelReplyCompletionStage.toCompletableFuture(), id);
LOG.debug("Gre tunnel deleted successfully for: {}, gre: {}", swIfName, gre);
// Remove interface from our interface context
interfaceContext.removeName(swIfName, writeContext.getMappingContext());
}
}
|
