| /* |
| * 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.net.pi.impl; |
| |
| import com.google.common.collect.ImmutableBiMap; |
| import com.google.common.collect.ImmutableList; |
| import org.onlab.util.ImmutableByteSequence; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.PortNumber; |
| import org.onosproject.net.driver.AbstractHandlerBehaviour; |
| import org.onosproject.net.flow.TrafficTreatment; |
| import org.onosproject.net.flow.criteria.Criterion; |
| import org.onosproject.net.flow.instructions.Instruction; |
| import org.onosproject.net.packet.InboundPacket; |
| import org.onosproject.net.packet.OutboundPacket; |
| import org.onosproject.net.pi.model.PiPipelineInterpreter; |
| 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.pi.runtime.PiActionParamId; |
| import org.onosproject.net.pi.runtime.PiHeaderFieldId; |
| import org.onosproject.net.pi.runtime.PiPacketOperation; |
| import org.onosproject.net.pi.runtime.PiTableId; |
| |
| import java.util.Collection; |
| import java.util.Optional; |
| |
| import static org.onosproject.net.PortNumber.CONTROLLER; |
| import static org.onosproject.net.flow.instructions.Instructions.OutputInstruction; |
| |
| /** |
| * Mock interpreter implementation. |
| */ |
| public class MockInterpreter extends AbstractHandlerBehaviour implements PiPipelineInterpreter { |
| |
| static final String TABLE0 = "table0"; |
| static final String SEND_TO_CPU = "send_to_cpu"; |
| static final String PORT = "port"; |
| static final String DROP = "drop"; |
| static final String SET_EGRESS_PORT = "set_egress_port"; |
| |
| static final PiHeaderFieldId IN_PORT_ID = PiHeaderFieldId.of("standard_metadata", "ingress_port"); |
| static final PiHeaderFieldId ETH_DST_ID = PiHeaderFieldId.of("ethernet", "dstAddr"); |
| static final PiHeaderFieldId ETH_SRC_ID = PiHeaderFieldId.of("ethernet", "srcAddr"); |
| static final PiHeaderFieldId ETH_TYPE_ID = PiHeaderFieldId.of("ethernet", "etherType"); |
| |
| private static final ImmutableBiMap<Criterion.Type, PiHeaderFieldId> CRITERION_MAP = ImmutableBiMap.of( |
| Criterion.Type.IN_PORT, IN_PORT_ID, |
| Criterion.Type.ETH_DST, ETH_DST_ID, |
| Criterion.Type.ETH_SRC, ETH_SRC_ID, |
| Criterion.Type.ETH_TYPE, ETH_TYPE_ID); |
| |
| private static final ImmutableBiMap<Integer, PiTableId> TABLE_MAP = ImmutableBiMap.of( |
| 0, PiTableId.of(TABLE0)); |
| |
| @Override |
| public PiAction mapTreatment(TrafficTreatment treatment, PiTableId piTableId) throws PiInterpreterException { |
| |
| if (treatment.allInstructions().size() == 0) { |
| // No instructions means drop for us. |
| return actionWithName(DROP); |
| } else if (treatment.allInstructions().size() > 1) { |
| // Otherwise, we understand treatments with only 1 instruction. |
| throw new PiPipelineInterpreter.PiInterpreterException("Treatment has multiple instructions"); |
| } |
| |
| Instruction instruction = treatment.allInstructions().get(0); |
| |
| switch (instruction.type()) { |
| case OUTPUT: |
| OutputInstruction outInstruction = (OutputInstruction) instruction; |
| PortNumber port = outInstruction.port(); |
| if (!port.isLogical()) { |
| PiAction.builder() |
| .withId(PiActionId.of(SET_EGRESS_PORT)) |
| .withParameter(new PiActionParam(PiActionParamId.of(PORT), |
| ImmutableByteSequence.copyFrom(port.toLong()))) |
| .build(); |
| } else if (port.equals(CONTROLLER)) { |
| return actionWithName(SEND_TO_CPU); |
| } else { |
| throw new PiInterpreterException("Egress on logical port not supported: " + port); |
| } |
| case NOACTION: |
| return actionWithName(DROP); |
| default: |
| throw new PiInterpreterException("Instruction type not supported: " + instruction.type().name()); |
| } |
| } |
| |
| @Override |
| public Collection<PiPacketOperation> mapOutboundPacket(OutboundPacket packet) |
| throws PiInterpreterException { |
| return ImmutableList.of(); |
| } |
| |
| @Override |
| public InboundPacket mapInboundPacket(DeviceId deviceId, PiPacketOperation packetInOperation) |
| throws PiInterpreterException { |
| return null; |
| } |
| |
| /** |
| * Returns an action instance with no runtime parameters. |
| */ |
| private PiAction actionWithName(String name) { |
| return PiAction.builder().withId(PiActionId.of(name)).build(); |
| } |
| |
| @Override |
| public Optional<PiHeaderFieldId> mapCriterionType(Criterion.Type type) { |
| return Optional.ofNullable(CRITERION_MAP.get(type)); |
| } |
| |
| @Override |
| public Optional<Criterion.Type> mapPiHeaderFieldId(PiHeaderFieldId headerFieldId) { |
| return Optional.ofNullable(CRITERION_MAP.inverse().get(headerFieldId)); |
| } |
| |
| @Override |
| public Optional<PiTableId> mapFlowRuleTableId(int flowRuleTableId) { |
| return Optional.ofNullable(TABLE_MAP.get(flowRuleTableId)); |
| } |
| |
| @Override |
| public Optional<Integer> mapPiTableId(PiTableId piTableId) { |
| return Optional.ofNullable(TABLE_MAP.inverse().get(piTableId)); |
| } |
| |
| } |