2 * Copyright (c) 2014 Cisco Systems, Inc. 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.l2switch.arphandler.core;
11 import java.util.List;
12 import org.opendaylight.l2switch.arphandler.inventory.InventoryReader;
13 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev100924.MacAddress;
14 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
15 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnectorKey;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketProcessingService;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInput;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInputBuilder;
23 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
24 import org.slf4j.Logger;
25 import org.slf4j.LoggerFactory;
28 * PacketDispatcher sends packets out to the network.
30 public class PacketDispatcher {
32 private final static Logger LOG = LoggerFactory.getLogger(PacketDispatcher.class);
33 private InventoryReader inventoryReader;
34 private PacketProcessingService packetProcessingService;
36 public void setPacketProcessingService(PacketProcessingService packetProcessingService) {
37 this.packetProcessingService = packetProcessingService;
40 public void setInventoryReader(InventoryReader inventoryReader) {
41 this.inventoryReader = inventoryReader;
45 * Dispatches the packet in the appropriate way - flood or unicast.
48 * The payload to be sent.
50 * The NodeConnector where the payload came from.
52 * The source MacAddress of the packet.
54 * The destination MacAddress of the packet.
56 public void dispatchPacket(byte[] payload, NodeConnectorRef ingress, MacAddress srcMac, MacAddress destMac) {
57 inventoryReader.readInventory();
59 String nodeId = ingress.getValue().firstIdentifierOf(Node.class).firstKeyOf(Node.class, NodeKey.class).getId()
61 NodeConnectorRef srcConnectorRef = inventoryReader.getControllerSwitchConnectors().get(nodeId);
63 if (srcConnectorRef == null) {
64 refreshInventoryReader();
65 srcConnectorRef = inventoryReader.getControllerSwitchConnectors().get(nodeId);
67 NodeConnectorRef destNodeConnector = inventoryReader
68 .getNodeConnector(ingress.getValue().firstIdentifierOf(Node.class), destMac);
69 if (srcConnectorRef != null) {
70 if (destNodeConnector != null) {
71 sendPacketOut(payload, srcConnectorRef, destNodeConnector);
73 floodPacket(nodeId, payload, ingress, srcConnectorRef);
76 LOG.info("Cannot send packet out or flood as controller node connector is not available for node {}.",
85 * The payload to be sent.
87 * The NodeConnector where the payload came from.
89 public void floodPacket(String nodeId, byte[] payload, NodeConnectorRef origIngress,
90 NodeConnectorRef controllerNodeConnector) {
92 List<NodeConnectorRef> nodeConnectors = inventoryReader.getSwitchNodeConnectors().get(nodeId);
94 if (nodeConnectors == null) {
95 refreshInventoryReader();
96 nodeConnectors = inventoryReader.getSwitchNodeConnectors().get(nodeId);
97 if (nodeConnectors == null) {
98 LOG.info("Cannot flood packets, as inventory doesn't have any node connectors for node {}", nodeId);
102 for (NodeConnectorRef ncRef : nodeConnectors) {
103 String ncId = ncRef.getValue().firstIdentifierOf(NodeConnector.class)
104 .firstKeyOf(NodeConnector.class, NodeConnectorKey.class).getId().getValue();
105 // Don't flood on discarding node connectors & origIngress
106 if (!ncId.equals(origIngress.getValue().firstIdentifierOf(NodeConnector.class)
107 .firstKeyOf(NodeConnector.class, NodeConnectorKey.class).getId().getValue())) {
108 sendPacketOut(payload, origIngress, ncRef);
114 * Sends the specified packet on the specified port.
117 * The payload to be sent.
119 * The NodeConnector where the payload came from.
121 * The NodeConnector where the payload will go.
123 public void sendPacketOut(byte[] payload, NodeConnectorRef ingress, NodeConnectorRef egress) {
124 if (ingress == null || egress == null)
126 InstanceIdentifier<Node> egressNodePath = getNodePath(egress.getValue());
127 TransmitPacketInput input = new TransmitPacketInputBuilder() //
128 .setPayload(payload) //
129 .setNode(new NodeRef(egressNodePath)) //
130 .setEgress(egress) //
131 .setIngress(ingress) //
133 packetProcessingService.transmitPacket(input);
136 private void refreshInventoryReader() {
137 inventoryReader.setRefreshData(true);
138 inventoryReader.readInventory();
141 private InstanceIdentifier<Node> getNodePath(final InstanceIdentifier<?> nodeChild) {
142 return nodeChild.firstIdentifierOf(Node.class);