| /* |
| * 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.bmv2; |
| |
| import org.onosproject.net.Device; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.driver.AbstractHandlerBehaviour; |
| import org.onosproject.net.packet.OutboundPacket; |
| import org.onosproject.net.packet.PacketProgrammable; |
| import org.onosproject.net.pi.model.PiPipeconf; |
| import org.onosproject.net.pi.model.PiPipelineInterpreter; |
| import org.onosproject.net.pi.runtime.PiPacketOperation; |
| import org.onosproject.net.pi.runtime.PiPipeconfService; |
| import org.onosproject.p4runtime.api.P4RuntimeClient; |
| import org.onosproject.p4runtime.api.P4RuntimeController; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Collection; |
| |
| /** |
| * Packet Programmable behaviour for BMv2 devices. |
| */ |
| public class Bmv2PacketProgrammable extends AbstractHandlerBehaviour implements PacketProgrammable { |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| @Override |
| public void emit(OutboundPacket packet) { |
| |
| DeviceId deviceId = handler().data().deviceId(); |
| P4RuntimeController controller = handler().get(P4RuntimeController.class); |
| if (!controller.hasClient(deviceId)) { |
| log.warn("Unable to find client for {}, aborting the sending packet", deviceId); |
| return; |
| } |
| |
| P4RuntimeClient client = controller.getClient(deviceId); |
| PiPipeconfService piPipeconfService = handler().get(PiPipeconfService.class); |
| |
| final PiPipeconf pipeconf; |
| if (piPipeconfService.ofDevice(deviceId).isPresent() && |
| piPipeconfService.getPipeconf(piPipeconfService.ofDevice(deviceId).get()).isPresent()) { |
| pipeconf = piPipeconfService.getPipeconf(piPipeconfService.ofDevice(deviceId).get()).get(); |
| } else { |
| log.warn("Unable to get the pipeconf of {}", deviceId); |
| return; |
| } |
| |
| DeviceService deviceService = handler().get(DeviceService.class); |
| Device device = deviceService.getDevice(deviceId); |
| final PiPipelineInterpreter interpreter = device.is(PiPipelineInterpreter.class) |
| ? device.as(PiPipelineInterpreter.class) : null; |
| if (!device.is(PiPipelineInterpreter.class)) { |
| log.warn("Device {} unable to instantiate interpreter of pipeconf {}", deviceId, pipeconf.id()); |
| return; |
| } |
| |
| try { |
| Collection<PiPacketOperation> operations = interpreter.mapOutboundPacket(packet); |
| operations.forEach(piPacketOperation -> { |
| log.debug("Doing PiPacketOperation {}", piPacketOperation); |
| client.packetOut(piPacketOperation, pipeconf); |
| }); |
| } catch (PiPipelineInterpreter.PiInterpreterException e) { |
| log.error("Interpreter of pipeconf {} was unable to translate outbound packet: {}", |
| pipeconf.id(), e.getMessage()); |
| } |
| } |
| } |