From 995340b2a5204f8f643b3c5a4d18620f02b795a0 Mon Sep 17 00:00:00 2001 From: Marek Gradzki Date: Fri, 23 Jun 2017 14:00:58 +0200 Subject: HC2VPP-174: add support for BGP IPv4/IPv6 unicast Tranlates BGP IPv4/IPv6 routes to VPP FIB. Not supported: - multiple paths (https://tools.ietf.org/html/rfc7911) - IPv6 SR Change-Id: I06f0e81dd44df6a2eb7a3fe95445041e8f4f7af9 Signed-off-by: Marek Gradzki --- .../java/io/fd/hc2vpp/bgp/inet/Ipv4Writer.java | 111 +++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 bgp/inet/src/main/java/io/fd/hc2vpp/bgp/inet/Ipv4Writer.java (limited to 'bgp/inet/src/main/java/io/fd/hc2vpp/bgp/inet/Ipv4Writer.java') diff --git a/bgp/inet/src/main/java/io/fd/hc2vpp/bgp/inet/Ipv4Writer.java b/bgp/inet/src/main/java/io/fd/hc2vpp/bgp/inet/Ipv4Writer.java new file mode 100644 index 000000000..ef1853ce8 --- /dev/null +++ b/bgp/inet/src/main/java/io/fd/hc2vpp/bgp/inet/Ipv4Writer.java @@ -0,0 +1,111 @@ +/* + * Copyright (c) 2017 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.bgp.inet; + +import static com.google.common.base.Preconditions.checkArgument; +import static com.google.common.base.Preconditions.checkNotNull; + +import com.sun.istack.internal.Nullable; +import io.fd.hc2vpp.common.translate.util.Ipv4Translator; +import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer; +import io.fd.honeycomb.translate.bgp.RouteWriter; +import io.fd.honeycomb.translate.write.WriteFailedException; +import io.fd.vpp.jvpp.core.dto.IpAddDelRoute; +import io.fd.vpp.jvpp.core.future.FutureJVppCore; +import javax.annotation.Nonnull; +import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address; +import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.routes.Ipv4Routes; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.routes.ipv4.routes.Ipv4Route; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.BgpRib; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.Rib; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.LocRib; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.Tables; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.CNextHop; +import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.c.next.hop.Ipv4NextHopCase; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +final class Ipv4Writer implements RouteWriter, Ipv4Translator, JvppReplyConsumer, RouteRequestProducer { + + private static final Logger LOG = LoggerFactory.getLogger(Ipv4Writer.class); + + @SuppressWarnings("unchecked") + private static final InstanceIdentifier ID = InstanceIdentifier.create(BgpRib.class).child(Rib.class) + .child(LocRib.class).child(Tables.class).child((Class) Ipv4Routes.class) + .child(Ipv4Route.class); + + private final FutureJVppCore vppApi; + + Ipv4Writer(@Nonnull final FutureJVppCore vppApi) { + this.vppApi = checkNotNull(vppApi, "vppApi should not be null"); + } + + @Override + public void create(@Nonnull final InstanceIdentifier id, + @Nullable final Ipv4Route route) + throws WriteFailedException.CreateFailedException { + final IpAddDelRoute request = request(route, true); + LOG.debug("Translating id={}, route={} to {}", id, route, request); + getReplyForCreate(vppApi.ipAddDelRoute(request).toCompletableFuture(), id, route); + LOG.debug("VPP FIB updated successfully (added id={}).", id); + } + + @Override + public void delete(@Nonnull final InstanceIdentifier id, + @Nullable final Ipv4Route route) + throws WriteFailedException.DeleteFailedException { + LOG.debug("Removing id={}, route={}", id, route); + getReplyForDelete(vppApi.ipAddDelRoute(request(route, false)).toCompletableFuture(), id); + LOG.debug("VPP FIB updated successfully (removed id={}).", id); + } + + @Override + public void update(@Nonnull final InstanceIdentifier id, + @Nullable final Ipv4Route routeBefore, + @Nullable final Ipv4Route routeAfter) + throws WriteFailedException.UpdateFailedException { + throw new WriteFailedException.UpdateFailedException(id, routeBefore, routeAfter, + new UnsupportedOperationException("Operation not supported")); + } + + private IpAddDelRoute request(final Ipv4Route route, boolean isAdd) { + // TODO(HC2VPP-177): add support for request.nextHopWeight for multiple path case + + final CNextHop cNextHop = route.getAttributes().getCNextHop(); + checkArgument(cNextHop instanceof Ipv4NextHopCase, "only ipv4 next hop is supported, but was %s (route = %s)", + cNextHop, route); + + final IpAddDelRoute request = ipAddDelRoute(isAdd); + + final Ipv4Address nextHop = ((Ipv4NextHopCase) cNextHop).getIpv4NextHop().getGlobal(); + request.nextHopAddress = ipv4AddressNoZoneToArray(nextHop.getValue()); + + final Ipv4Prefix destinationAddress = route.getPrefix(); + request.dstAddress = ipv4AddressPrefixToArray(destinationAddress); + request.dstAddressLength = extractPrefix(destinationAddress); + + return request; + } + + @Nonnull + @Override + public InstanceIdentifier getManagedDataObjectType() { + return ID; + } +} -- cgit 1.2.3-korg