| /* |
| * Copyright 2017-present Open Networking Foundation |
| * |
| * 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 org.onosproject.pi.demo.app.tor; |
| |
| import com.google.common.collect.Lists; |
| import org.apache.felix.scr.annotations.Component; |
| import org.onlab.packet.IpAddress; |
| import org.onlab.packet.MacAddress; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.Host; |
| import org.onosproject.net.Path; |
| import org.onosproject.net.Port; |
| import org.onosproject.net.PortNumber; |
| import org.onosproject.net.flow.DefaultTrafficSelector; |
| import org.onosproject.net.flow.DefaultTrafficTreatment; |
| import org.onosproject.net.flow.FlowRule; |
| import org.onosproject.net.flow.TrafficTreatment; |
| import org.onosproject.net.pi.runtime.PiAction; |
| import org.onosproject.net.pi.runtime.PiActionId; |
| import org.onosproject.net.pi.runtime.PiActionParam; |
| import org.onosproject.net.topology.DefaultTopologyVertex; |
| import org.onosproject.net.topology.Topology; |
| import org.onosproject.net.topology.TopologyGraph; |
| import org.onosproject.pi.demo.app.common.AbstractUpgradableFabricApp; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| |
| import static com.google.common.collect.Collections2.permutations; |
| import static org.onlab.util.ImmutableByteSequence.copyFrom; |
| import static org.onosproject.pi.demo.app.tor.Combination.combinations; |
| import static org.onosproject.pi.demo.app.tor.TorInterpreter.*; |
| |
| |
| /** |
| * Implementation of an upgradable fabric app for TOR configuration. |
| */ |
| @Component(immediate = true) |
| public class TorApp extends AbstractUpgradableFabricApp { |
| |
| private static final String APP_NAME = "org.onosproject.pi-tor"; |
| |
| public TorApp() { |
| super(APP_NAME, TorPipeconfFactory.getAll()); |
| } |
| |
| @Override |
| public boolean initDevice(DeviceId deviceId) { |
| // Nothing to do. |
| return true; |
| } |
| |
| @Override |
| public List<FlowRule> generateLeafRules(DeviceId leaf, Host localHost, Set<Host> remoteHosts, |
| Collection<DeviceId> availableSpines, Topology topo) |
| throws FlowRuleGeneratorException { |
| |
| // Get ports which connect this leaf switch to hosts. |
| Set<PortNumber> hostPorts = deviceService.getPorts(leaf) |
| .stream() |
| .filter(port -> !isFabricPort(port, topo)) |
| .map(Port::number) |
| .collect(Collectors.toSet()); |
| |
| // Get ports which connect this leaf to the given available spines. |
| TopologyGraph graph = topologyService.getGraph(topo); |
| Set<PortNumber> fabricPorts = graph.getEdgesFrom(new DefaultTopologyVertex(leaf)) |
| .stream() |
| .filter(e -> availableSpines.contains(e.dst().deviceId())) |
| .map(e -> e.link().src().port()) |
| .collect(Collectors.toSet()); |
| |
| if (hostPorts.size() != 1 || fabricPorts.size() == 0) { |
| log.error("Leaf switch has invalid port configuration: hostPorts={}, fabricPorts={}", |
| hostPorts.size(), fabricPorts.size()); |
| throw new FlowRuleGeneratorException(); |
| } |
| PortNumber hostPort = hostPorts.iterator().next(); |
| |
| List<FlowRule> rules = Lists.newArrayList(); |
| |
| // Filtering rules |
| rules.addAll(generateFilteringRules(leaf, remoteHosts)); |
| rules.addAll(generateFilteringRules(leaf, Collections.singleton(localHost))); |
| |
| // FIXME: ignore ECMP for the moment |
| // if (fabricPorts.size() > 1) { |
| // // Do ECMP. |
| // Pair<PiTableAction, List<FlowRule>> result = provisionEcmpPiTableAction(leaf, fabricPorts); |
| // rules.addAll(result.getRight()); |
| // treatment = DefaultTrafficTreatment.builder().piTableAction(result.getLeft()).build(); |
| // } else { |
| // // Output on port. |
| // PortNumber outPort = fabricPorts.iterator().next(); |
| // treatment = DefaultTrafficTreatment.builder().setOutput(outPort).build(); |
| // } |
| |
| |
| PortNumber outPort = fabricPorts.iterator().next(); |
| |
| // From local host to remote ones. |
| for (Host remoteHost : remoteHosts) { |
| for (IpAddress ipAddr : remoteHost.ipAddresses()) { |
| FlowRule rule = flowRuleBuilder(leaf, L3_FWD_TBL_ID) |
| .withSelector( |
| DefaultTrafficSelector.builder() |
| .matchIPDst(ipAddr.toIpPrefix()) |
| .build()) |
| .withTreatment( |
| DefaultTrafficTreatment.builder() |
| .piTableAction(nextHopAction(outPort, localHost.mac(), remoteHost.mac())) |
| .build()) |
| .build(); |
| rules.add(rule); |
| } |
| } |
| |
| // From remote hosts to the local one |
| for (IpAddress dstIpAddr : localHost.ipAddresses()) { |
| for (Host remoteHost : remoteHosts) { |
| FlowRule rule = flowRuleBuilder(leaf, L3_FWD_TBL_ID) |
| .withSelector( |
| DefaultTrafficSelector.builder() |
| .matchIPDst(dstIpAddr.toIpPrefix()) |
| .build()) |
| .withTreatment( |
| DefaultTrafficTreatment.builder() |
| .piTableAction(nextHopAction(hostPort, remoteHost.mac(), localHost.mac())) |
| .build()) |
| .build(); |
| rules.add(rule); |
| } |
| } |
| |
| return rules; |
| } |
| |
| private PiAction nextHopAction(PortNumber port, MacAddress smac, MacAddress dmac) { |
| return PiAction.builder() |
| .withId(SET_NEXT_HOP_ACT_ID) |
| .withParameter(new PiActionParam(PORT_ACT_PRM_ID, copyFrom(port.toLong()))) |
| // Ignore L3 routing behaviour by keeping the original host mac addresses at each hop. |
| .withParameter(new PiActionParam(SMAC_ACT_PRM_ID, copyFrom(smac.toBytes()))) |
| .withParameter(new PiActionParam(DMAC_ACT_PRM_ID, copyFrom(dmac.toBytes()))) |
| .build(); |
| } |
| |
| @Override |
| public List<FlowRule> generateSpineRules(DeviceId spine, Set<Host> hosts, Topology topo) |
| throws FlowRuleGeneratorException { |
| |
| List<FlowRule> rules = Lists.newArrayList(); |
| |
| rules.addAll(generateFilteringRules(spine, hosts)); |
| |
| // For each host pair (src -> dst) |
| for (Set<Host> hostCombs : combinations(hosts, 2)) { |
| for (List<Host> hostPair : permutations(hostCombs)) { |
| |
| Host srcHost = hostPair.get(0); |
| Host dstHost = hostPair.get(1); |
| |
| Set<Path> paths = topologyService.getPaths(topo, spine, dstHost.location().deviceId()); |
| |
| if (paths.size() == 0) { |
| log.warn("Can't find any path between spine {} and host {}", spine, dstHost); |
| throw new FlowRuleGeneratorException(); |
| } |
| |
| TrafficTreatment treatment; |
| |
| // FIXME: ingore ECMP for the moment |
| // if (paths.size() == 1) { |
| // // Only one path, do output on port. |
| // PortNumber port = paths.iterator().next().src().port(); |
| // treatment = DefaultTrafficTreatment.builder().setOutput(port).build(); |
| // } else { |
| // // Multiple paths, do ECMP. |
| // Set<PortNumber> portNumbers = paths.stream().map(p -> p.src().port()).collect(toSet()); |
| // Pair<PiTableAction, List<FlowRule>> result = provisionEcmpPiTableAction(deviceId, portNumbers); |
| // rules.addAll(result.getRight()); |
| // treatment = DefaultTrafficTreatment.builder().piTableAction(result.getLeft()).build(); |
| // } |
| |
| PortNumber port = paths.iterator().next().src().port(); |
| treatment = DefaultTrafficTreatment.builder() |
| .piTableAction(nextHopAction(port, srcHost.mac(), dstHost.mac())) |
| .build(); |
| |
| for (IpAddress dstIpAddr : dstHost.ipAddresses()) { |
| FlowRule rule = flowRuleBuilder(spine, L3_FWD_TBL_ID) |
| .withSelector( |
| DefaultTrafficSelector.builder() |
| .matchIPDst(dstIpAddr.toIpPrefix()) |
| .build()) |
| .withTreatment(treatment) |
| .build(); |
| |
| rules.add(rule); |
| } |
| } |
| } |
| |
| return rules; |
| } |
| |
| private List<FlowRule> generateFilteringRules(DeviceId deviceId, Collection<Host> dstHosts) |
| throws FlowRuleGeneratorException { |
| |
| List<FlowRule> rules = Lists.newArrayList(); |
| for (Host host : dstHosts) { |
| MacAddress ethAddr = host.mac(); |
| FlowRule rule = flowRuleBuilder(deviceId, L3_FILTER_TBL_ID) |
| .withSelector(DefaultTrafficSelector.builder() |
| .matchEthDst(ethAddr) |
| .build()) |
| .withTreatment(DefaultTrafficTreatment.builder() |
| .piTableAction(PiAction.builder() |
| .withId(PiActionId.of("NoAction")) |
| .build()) |
| .build()) |
| .build(); |
| rules.add(rule); |
| } |
| return rules; |
| } |
| |
| } |