1 files changed, 181 insertions, 0 deletions
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/hc2vpp/v3po/write/VxlanCustomizer.java b/v3po/v3po2vpp/src/main/java/io/fd/hc2vpp/v3po/write/VxlanCustomizer.java
new file mode 100644
index 000000000..6cac99c38
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/io/fd/hc2vpp/v3po/write/VxlanCustomizer.java
@@ -0,0 +1,181 @@
+/*
+ * Copyright (c) 2016 Cisco 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.hc2vpp.v3po.write;
+
+import io.fd.hc2vpp.common.translate.util.AbstractInterfaceTypeCustomizer;
+import io.fd.hc2vpp.common.translate.util.AddressTranslator;
+import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
+import io.fd.hc2vpp.common.translate.util.NamingContext;
+import io.fd.hc2vpp.v3po.DisabledInterfacesManager;
+import io.fd.honeycomb.translate.write.WriteContext;
+import io.fd.honeycomb.translate.write.WriteFailedException;
+import io.fd.jvpp.core.dto.VxlanAddDelTunnel;
+import io.fd.jvpp.core.dto.VxlanAddDelTunnelReply;
+import io.fd.jvpp.core.future.FutureJVppCore;
+import java.util.concurrent.CompletionStage;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.v3po.rev190502.L2Input;
+import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.v3po.rev190502.NshProxy;
+import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.v3po.rev190502.VxlanTunnel;
+import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.v3po.rev190502.interfaces._interface.Vxlan;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddressNoZone;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev180220.InterfaceType;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev180220.interfaces.Interface;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class VxlanCustomizer extends AbstractInterfaceTypeCustomizer<Vxlan> implements JvppReplyConsumer {
+
+    private static final Logger LOG = LoggerFactory.getLogger(VxlanCustomizer.class);
+
+    private final NamingContext interfaceNamingContext;
+    private final DisabledInterfacesManager interfaceDisableContext;
+
+    public VxlanCustomizer(@Nonnull final FutureJVppCore vppApi,
+                           @Nonnull final NamingContext interfaceNamingContext,
+                           @Nonnull final DisabledInterfacesManager interfaceDisableContext) {
+        super(vppApi);
+        this.interfaceNamingContext = interfaceNamingContext;
+        this.interfaceDisableContext = interfaceDisableContext;
+    }
+
+    @Override
+    protected Class<? extends InterfaceType> getExpectedInterfaceType() {
+        return VxlanTunnel.class;
+    }
+
+    @Override
+    protected final void writeInterface(@Nonnull final InstanceIdentifier<Vxlan> id, @Nonnull final Vxlan dataAfter,
+                                        @Nonnull final WriteContext writeContext)
+            throws WriteFailedException {
+        final String swIfName = id.firstKeyOf(Interface.class).getName();
+        createVxlanTunnel(id, swIfName, dataAfter, writeContext);
+    }
+
+    @Override
+    public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<Vxlan> id, @Nonnull final Vxlan dataBefore,
+                                        @Nonnull final WriteContext writeContext)
+            throws WriteFailedException {
+        final String swIfName = id.firstKeyOf(Interface.class).getName();
+        deleteVxlanTunnel(id, swIfName, dataBefore, writeContext);
+    }
+
+    private void createVxlanTunnel(final InstanceIdentifier<Vxlan> id, final String swIfName, final Vxlan vxlan,
+                                   final WriteContext writeContext)
+            throws WriteFailedException {
+        final byte isIpv6 = (byte) (isIpv6(vxlan)
+                ? 1
+                : 0);
+
+        int encapVrfId = vxlan.getEncapVrfId().getValue().intValue();
+        int vni = vxlan.getVni().getValue().intValue();
+
+        int decapNext = -1;
+        if (vxlan.getDecapNext() == L2Input.class) {
+            decapNext = 1;
+        } else if (vxlan.getDecapNext() == NshProxy.class) {
+            decapNext = 2;
+        }
+
+        LOG.debug("Setting vxlan tunnel for interface: {}. Vxlan: {}", swIfName, vxlan);
+        final CompletionStage<VxlanAddDelTunnelReply> vxlanAddDelTunnelReplyCompletionStage =
+                getFutureJVpp().vxlanAddDelTunnel(getVxlanTunnelRequest((byte) 1 /* is add */, vxlan.getSrc(),
+                        vxlan.getDst(), encapVrfId, decapNext, vni, isIpv6));
+
+        final VxlanAddDelTunnelReply reply =
+                getReplyForCreate(vxlanAddDelTunnelReplyCompletionStage.toCompletableFuture(), id, vxlan);
+        LOG.debug("Vxlan tunnel set successfully for: {}, vxlan: {}", swIfName, vxlan);
+        if (interfaceNamingContext.containsName(reply.swIfIndex, writeContext.getMappingContext())) {
+            // VPP keeps vxlan 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. vxlan_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 vxlan_tunnel0 -> 6 mapping and storing
+            // new name for that ID
+            final String formerName = interfaceNamingContext.getName(reply.swIfIndex, writeContext.getMappingContext());
+            LOG.debug("Removing updated mapping of a vxlan tunnel, id: {}, former name: {}, new name: {}",
+                    reply.swIfIndex, formerName, swIfName);
+            interfaceNamingContext.removeName(formerName, writeContext.getMappingContext());
+
+        }
+
+        // Removing disability of an interface in case a vxlan tunnel formerly deleted is being reused in VPP
+        // further details in above comment
+        if (interfaceDisableContext.isInterfaceDisabled(reply.swIfIndex, writeContext.getMappingContext())) {
+            LOG.debug("Removing disability of vxlan tunnel, id: {}, name: {}", reply.swIfIndex, swIfName);
+            interfaceDisableContext.removeDisabledInterface(reply.swIfIndex, writeContext.getMappingContext());
+        }
+
+        // Add new interface to our interface context
+        interfaceNamingContext.addName(reply.swIfIndex, swIfName, writeContext.getMappingContext());
+    }
+
+    private boolean isIpv6(final Vxlan vxlan) {
+        return vxlan.getSrc().getIpv4AddressNoZone() == null;
+
+    }
+
+    private void deleteVxlanTunnel(final InstanceIdentifier<Vxlan> id, final String swIfName, final Vxlan vxlan,
+                                   final WriteContext writeContext) throws WriteFailedException {
+        final byte isIpv6 = (byte) (isIpv6(vxlan)
+                ? 1
+                : 0);
+
+        int encapVrfId = vxlan.getEncapVrfId().getValue().intValue();
+        int vni = vxlan.getVni().getValue().intValue();
+
+        int decapNext = -1;
+        if (vxlan.getDecapNext() == L2Input.class) {
+            decapNext = 1;
+        } else if (vxlan.getDecapNext() == NshProxy.class) {
+            decapNext = 2;
+        }
+
+        LOG.debug("Deleting vxlan tunnel for interface: {}. Vxlan: {}", swIfName, vxlan);
+        final CompletionStage<VxlanAddDelTunnelReply> vxlanAddDelTunnelReplyCompletionStage =
+                getFutureJVpp().vxlanAddDelTunnel(getVxlanTunnelRequest((byte) 0 /* is add */, vxlan.getSrc(),
+                        vxlan.getDst(), encapVrfId, decapNext, vni, isIpv6));
+
+        getReplyForDelete(vxlanAddDelTunnelReplyCompletionStage.toCompletableFuture(), id);
+        LOG.debug("Vxlan tunnel deleted successfully for: {}, vxlan: {}", swIfName, vxlan);
+
+        final int index = interfaceNamingContext.getIndex(swIfName, writeContext.getMappingContext());
+        // Mark this interface as disabled to not include it in operational reads
+        // because VPP will keep the interface there
+        LOG.debug("Marking vxlan tunnel as disabled, id: {}, name: {}", index, swIfName);
+        interfaceDisableContext.disableInterface(index, writeContext.getMappingContext());
+        // Remove interface from our interface naming context
+        interfaceNamingContext.removeName(swIfName, writeContext.getMappingContext());
+    }
+
+    private static VxlanAddDelTunnel getVxlanTunnelRequest(final byte isAdd, final IpAddressNoZone srcAddr,
+                                                           final IpAddressNoZone dstAddr,
+                                                           final int encapVrfId,
+                                                           final int decapNextIndex, final int vni, final byte isIpv6) {
+        final VxlanAddDelTunnel vxlanAddDelTunnel = new VxlanAddDelTunnel();
+        vxlanAddDelTunnel.isAdd = isAdd;
+        vxlanAddDelTunnel.srcAddress = AddressTranslator.INSTANCE.ipAddressToArray(srcAddr);
+        vxlanAddDelTunnel.dstAddress = AddressTranslator.INSTANCE.ipAddressToArray(dstAddr);
+        vxlanAddDelTunnel.encapVrfId = encapVrfId;
+        vxlanAddDelTunnel.vni = vni;
+        vxlanAddDelTunnel.decapNextIndex = decapNextIndex;
+        vxlanAddDelTunnel.isIpv6 = isIpv6;
+        return vxlanAddDelTunnel;
+    }
+}