2 * Copyright (c) 2017 Ericsson India Global Services Pvt Ltd. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.netvirt.natservice.internal;
11 import java.util.concurrent.ExecutionException;
12 import javax.inject.Inject;
13 import javax.inject.Singleton;
14 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
15 import org.opendaylight.genius.infra.Datastore.Configuration;
16 import org.opendaylight.genius.infra.TypedReadWriteTransaction;
17 import org.opendaylight.genius.mdsalutil.FlowEntity;
18 import org.opendaylight.genius.mdsalutil.NwConstants;
19 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
21 import org.opendaylight.yangtools.yang.common.Uint32;
22 import org.opendaylight.yangtools.yang.common.Uint64;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
27 public class EvpnNaptSwitchHA {
29 private static final Logger LOG = LoggerFactory.getLogger(EvpnNaptSwitchHA.class);
30 private final DataBroker dataBroker;
31 private final IMdsalApiManager mdsalManager;
32 private final IdManagerService idManager;
33 private final EvpnSnatFlowProgrammer evpnSnatFlowProgrammer;
34 private final NatOverVxlanUtil natOverVxlanUtil;
37 public EvpnNaptSwitchHA(final DataBroker dataBroker, final IMdsalApiManager mdsalManager,
38 final EvpnSnatFlowProgrammer evpnSnatFlowProgrammer,
39 final IdManagerService idManager, final NatOverVxlanUtil natOverVxlanUtil) {
40 this.dataBroker = dataBroker;
41 this.mdsalManager = mdsalManager;
42 this.evpnSnatFlowProgrammer = evpnSnatFlowProgrammer;
43 this.idManager = idManager;
44 this.natOverVxlanUtil = natOverVxlanUtil;
47 public void evpnRemoveSnatFlowsInOldNaptSwitch(String routerName, Uint32 routerId, String vpnName,
48 Uint64 naptSwitch, TypedReadWriteTransaction<Configuration> confTx)
49 throws ExecutionException, InterruptedException {
50 //Handling VXLAN Provider type flow removal from old NAPT switch
51 Uint32 vpnId = NatUtil.getNetworkVpnIdFromRouterId(dataBroker, routerId);
52 if (vpnId == NatConstants.INVALID_ID) {
53 LOG.error("evpnRemoveSnatFlowsInOldNaptSwitch : Unable to retrieved vpnId for routerId {}", routerId);
56 String rd = NatUtil.getVpnRd(dataBroker, vpnName);
58 LOG.error("evpnRemoveSnatFlowsInOldNaptSwitch : Could not retrieve RD value from VPN Name {} ", vpnName);
61 Uint32 l3Vni = NatEvpnUtil.getL3Vni(dataBroker, rd);
62 if (l3Vni == NatConstants.DEFAULT_L3VNI_VALUE) {
63 LOG.debug("evpnRemoveSnatFlowsInOldNaptSwitch : L3VNI value is not configured in Internet VPN {} and RD {} "
64 + "Carve-out L3VNI value from OpenDaylight VXLAN VNI Pool and continue to installing "
65 + "NAT flows", vpnName, rd);
66 l3Vni = natOverVxlanUtil.getInternetVpnVni(vpnName, routerId);
68 String gwMacAddress = NatUtil.getExtGwMacAddFromRouterName(dataBroker, routerName);
69 if (gwMacAddress == null) {
70 LOG.error("evpnRemoveSnatFlowsInOldNaptSwitch : Unable to Get External Gateway MAC address for "
71 + "External Router ID {} ", routerId);
74 //Remove the L3_GW_MAC_TABLE which forwards the packet to Inbound NAPT Table (table19->44)
75 NatEvpnUtil.removeL3GwMacTableEntry(naptSwitch, vpnId, gwMacAddress, mdsalManager, confTx);
77 //Remove the PDNAT_TABLE which forwards the packet to Inbound NAPT Table (table25->44)
78 NatUtil.removePreDnatToSnatTableEntry(confTx, mdsalManager, naptSwitch);
80 //Remove the PSNAT_TABLE which forwards the packet to Outbound NAPT Table (table26->46)
81 String flowRef = getFlowRefSnat(naptSwitch, NwConstants.PSNAT_TABLE, routerName);
82 FlowEntity flowEntity = NatUtil.buildFlowEntity(naptSwitch, NwConstants.PSNAT_TABLE, flowRef);
83 LOG.info("evpnRemoveSnatFlowsInOldNaptSwitch: Remove the flow (table26->46) in table {} "
84 + "for the old napt switch with the DPN ID {} and router ID {}",
85 NwConstants.PSNAT_TABLE, naptSwitch, routerId);
86 mdsalManager.removeFlow(confTx, flowEntity);
88 //Remove the Terminating Service table entry which forwards the packet to Inbound NAPT Table (table36->44)
89 LOG.info("evpnRemoveSnatFlowsInOldNaptSwitch : Remove the flow (table36->44) in table {} "
90 + "for the old napt switch with the DPN ID {} and router ID {}",
91 NwConstants.INTERNAL_TUNNEL_TABLE, naptSwitch, routerId);
92 evpnSnatFlowProgrammer.removeTunnelTableEntry(naptSwitch, l3Vni, confTx);
94 //Remove the INTERNAL_TUNNEL_TABLE entry which forwards the packet to Outbound NAPT Table (table36->46)
95 Uint64 tunnelId = NatEvpnUtil.getTunnelIdForRouter(idManager, dataBroker, routerName, routerId);
97 String tsFlowRef = getFlowRefTs(naptSwitch, NwConstants.INTERNAL_TUNNEL_TABLE, tunnelId);
98 FlowEntity tsNatFlowEntity = NatUtil.buildFlowEntity(naptSwitch, NwConstants.INTERNAL_TUNNEL_TABLE, tsFlowRef);
99 LOG.info("evpnRemoveSnatFlowsInOldNaptSwitch : Remove the flow in the {} for the active switch "
100 + "with the DPN ID {} and router ID {}", NwConstants.INTERNAL_TUNNEL_TABLE, naptSwitch, routerId);
101 mdsalManager.removeFlow(confTx, tsNatFlowEntity);
104 private String getFlowRefTs(Uint64 dpnId, short tableId, Uint64 routerID) {
105 return NatConstants.NAPT_FLOWID_PREFIX + dpnId + NatConstants.FLOWID_SEPARATOR + tableId + NatConstants
106 .FLOWID_SEPARATOR + routerID;
109 private String getFlowRefSnat(Uint64 dpnId, short tableId, String routerID) {
110 return NatConstants.SNAT_FLOWID_PREFIX + dpnId + NatConstants.FLOWID_SEPARATOR + tableId + NatConstants
111 .FLOWID_SEPARATOR + routerID;