diff options
Diffstat (limited to 'v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/GreCustomizer.java')
| -rw-r--r-- | v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/GreCustomizer.java | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/GreCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/GreCustomizer.java new file mode 100644 index 000000000..673eef9da --- /dev/null +++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/interfaces/GreCustomizer.java @@ -0,0 +1,171 @@ +/* + * 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.NamingContext; +import io.fd.honeycomb.translate.v3po.util.TranslateUtils; +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.dto.GreAddDelTunnel; +import org.openvpp.jvpp.dto.GreAddDelTunnelReply; +import org.openvpp.jvpp.future.FutureJVpp; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class GreCustomizer extends AbstractInterfaceTypeCustomizer<Gre> { + + private static final Logger LOG = LoggerFactory.getLogger(GreCustomizer.class); + private final NamingContext interfaceContext; + + public GreCustomizer(final FutureJVpp vppApi, final NamingContext interfaceContext) { + super(vppApi); + this.interfaceContext = interfaceContext; + } + + @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 = + TranslateUtils.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)); + + TranslateUtils.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()); + } + + 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; + } +} |