| /* |
| * 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.drivers.corsa; |
| |
| import org.onosproject.driver.pipeline.DefaultSingleTablePipeline; |
| import org.onosproject.net.behaviour.Pipeliner; |
| import org.onosproject.net.flow.DefaultTrafficTreatment; |
| import org.onosproject.net.flow.TrafficTreatment; |
| import org.onosproject.net.flowobjective.DefaultForwardingObjective; |
| import org.onosproject.net.flowobjective.ForwardingObjective; |
| import org.slf4j.Logger; |
| |
| import static org.onosproject.net.flowobjective.ForwardingObjective.Flag.VERSATILE; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Abstraction of the Corsa L2 Overlay pipeline. |
| * This pipeline is single table with groups support. |
| */ |
| public class CorsaL2OverlayPipeline extends DefaultSingleTablePipeline implements Pipeliner { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| @Override |
| public void forward(ForwardingObjective fwd) { |
| // The Corsa devices don't support the clear deferred actions |
| // so for now we have to filter this instruction for the fwd |
| // objectives sent by the Packet Manager before to create the |
| // flow rule |
| if (fwd.flag() == VERSATILE && fwd.treatment().clearedDeferred()) { |
| // First we create a new treatment without the unsupported action |
| TrafficTreatment.Builder noClearTreatment = DefaultTrafficTreatment.builder(); |
| fwd.treatment().allInstructions().forEach(noClearTreatment::add); |
| // Then we create a new forwarding objective without the unsupported action |
| ForwardingObjective.Builder noClearFwd = DefaultForwardingObjective.builder(fwd); |
| noClearFwd.withTreatment(noClearTreatment.build()); |
| // According to the operation we substitute fwd with the correct objective |
| switch (fwd.op()) { |
| case ADD: |
| fwd = noClearFwd.add(fwd.context().orElse(null)); |
| break; |
| case REMOVE: |
| fwd = noClearFwd.remove(fwd.context().orElse(null)); |
| break; |
| default: |
| log.warn("Unknown operation {}", fwd.op()); |
| return; |
| } |
| } |
| // Finally we send to the DefaultSingleTablePipeline for the real processing |
| super.forward(fwd); |
| } |
| |
| } |