Thomas Vachuska | 781d18b | 2014-10-27 10:31:25 -0700 | [diff] [blame] | 1 | /* |
Ray Milkey | 34c9590 | 2015-04-15 09:47:53 -0700 | [diff] [blame] | 2 | * Copyright 2014-2015 Open Networking Laboratory |
Thomas Vachuska | 781d18b | 2014-10-27 10:31:25 -0700 | [diff] [blame] | 3 | * |
Thomas Vachuska | 4f1a60c | 2014-10-28 13:39:07 -0700 | [diff] [blame] | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
Thomas Vachuska | 781d18b | 2014-10-27 10:31:25 -0700 | [diff] [blame] | 7 | * |
Thomas Vachuska | 4f1a60c | 2014-10-28 13:39:07 -0700 | [diff] [blame] | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
Thomas Vachuska | 781d18b | 2014-10-27 10:31:25 -0700 | [diff] [blame] | 15 | */ |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 16 | package org.onosproject.openflow.controller; |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 17 | |
Jonathan Hart | 2a65575 | 2015-04-07 16:46:33 -0700 | [diff] [blame] | 18 | import org.onlab.packet.DeserializationException; |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 19 | import org.onlab.packet.Ethernet; |
| 20 | import org.projectfloodlight.openflow.protocol.OFPacketIn; |
| 21 | import org.projectfloodlight.openflow.protocol.OFPacketOut; |
Jonathan Hart | cc36be8 | 2015-04-09 11:54:56 -0700 | [diff] [blame] | 22 | import org.projectfloodlight.openflow.protocol.OFVersion; |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 23 | import org.projectfloodlight.openflow.protocol.action.OFAction; |
| 24 | import org.projectfloodlight.openflow.protocol.action.OFActionOutput; |
| 25 | import org.projectfloodlight.openflow.protocol.match.MatchField; |
| 26 | import org.projectfloodlight.openflow.types.OFBufferId; |
| 27 | import org.projectfloodlight.openflow.types.OFPort; |
Jonathan Hart | 2a65575 | 2015-04-07 16:46:33 -0700 | [diff] [blame] | 28 | import org.slf4j.Logger; |
| 29 | import org.slf4j.LoggerFactory; |
tom | 1679e18 | 2014-10-09 13:50:45 -0700 | [diff] [blame] | 30 | |
Jonathan Hart | e46c041 | 2015-01-20 13:19:55 -0800 | [diff] [blame] | 31 | import java.nio.BufferUnderflowException; |
| 32 | import java.util.Collections; |
| 33 | import java.util.concurrent.atomic.AtomicBoolean; |
| 34 | |
Changhoon Yoon | 541ef71 | 2015-05-23 17:18:34 +0900 | [diff] [blame] | 35 | import static org.onosproject.security.AppGuard.checkPermission; |
Changhoon Yoon | b856b81 | 2015-08-10 03:47:19 +0900 | [diff] [blame^] | 36 | import static org.onosproject.security.AppPermission.Type.*; |
Changhoon Yoon | 541ef71 | 2015-05-23 17:18:34 +0900 | [diff] [blame] | 37 | |
| 38 | |
Jonathan Hart | cc36be8 | 2015-04-09 11:54:56 -0700 | [diff] [blame] | 39 | /** |
| 40 | * Default implementation of an OpenFlowPacketContext. |
| 41 | */ |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 42 | public final class DefaultOpenFlowPacketContext implements OpenFlowPacketContext { |
| 43 | |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 44 | private final AtomicBoolean free = new AtomicBoolean(true); |
| 45 | private final AtomicBoolean isBuilt = new AtomicBoolean(false); |
| 46 | private final OpenFlowSwitch sw; |
| 47 | private final OFPacketIn pktin; |
| 48 | private OFPacketOut pktout = null; |
| 49 | |
alshabib | e9d3a32 | 2014-09-23 15:18:33 -0700 | [diff] [blame] | 50 | private final boolean isBuffered; |
| 51 | |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 52 | private DefaultOpenFlowPacketContext(OpenFlowSwitch s, OFPacketIn pkt) { |
| 53 | this.sw = s; |
| 54 | this.pktin = pkt; |
alshabib | e9d3a32 | 2014-09-23 15:18:33 -0700 | [diff] [blame] | 55 | this.isBuffered = pktin.getBufferId() != OFBufferId.NO_BUFFER; |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 56 | } |
| 57 | |
| 58 | @Override |
| 59 | public void send() { |
Changhoon Yoon | b856b81 | 2015-08-10 03:47:19 +0900 | [diff] [blame^] | 60 | checkPermission(PACKET_WRITE); |
Changhoon Yoon | 541ef71 | 2015-05-23 17:18:34 +0900 | [diff] [blame] | 61 | |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 62 | if (block() && isBuilt.get()) { |
| 63 | sw.sendMsg(pktout); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | @Override |
| 68 | public void build(OFPort outPort) { |
| 69 | if (isBuilt.getAndSet(true)) { |
| 70 | return; |
| 71 | } |
| 72 | OFPacketOut.Builder builder = sw.factory().buildPacketOut(); |
| 73 | OFAction act = buildOutput(outPort.getPortNumber()); |
| 74 | pktout = builder.setXid(pktin.getXid()) |
Pavlin Radoslavov | 2031899 | 2015-02-04 13:41:14 -0800 | [diff] [blame] | 75 | .setInPort(pktinInPort()) |
Thomas Vachuska | 5f99849 | 2014-10-31 00:46:11 -0700 | [diff] [blame] | 76 | .setBufferId(OFBufferId.NO_BUFFER) |
| 77 | .setData(pktin.getData()) |
| 78 | // .setBufferId(pktin.getBufferId()) |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 79 | .setActions(Collections.singletonList(act)) |
| 80 | .build(); |
| 81 | } |
| 82 | |
| 83 | @Override |
| 84 | public void build(Ethernet ethFrame, OFPort outPort) { |
| 85 | if (isBuilt.getAndSet(true)) { |
| 86 | return; |
| 87 | } |
| 88 | OFPacketOut.Builder builder = sw.factory().buildPacketOut(); |
| 89 | OFAction act = buildOutput(outPort.getPortNumber()); |
| 90 | pktout = builder.setXid(pktin.getXid()) |
| 91 | .setBufferId(OFBufferId.NO_BUFFER) |
Pavlin Radoslavov | 2031899 | 2015-02-04 13:41:14 -0800 | [diff] [blame] | 92 | .setInPort(pktinInPort()) |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 93 | .setActions(Collections.singletonList(act)) |
| 94 | .setData(ethFrame.serialize()) |
| 95 | .build(); |
| 96 | } |
| 97 | |
| 98 | @Override |
| 99 | public Ethernet parsed() { |
Changhoon Yoon | b856b81 | 2015-08-10 03:47:19 +0900 | [diff] [blame^] | 100 | checkPermission(PACKET_READ); |
Changhoon Yoon | 541ef71 | 2015-05-23 17:18:34 +0900 | [diff] [blame] | 101 | |
Jonathan Hart | e8600eb | 2015-01-12 10:30:45 -0800 | [diff] [blame] | 102 | try { |
Jonathan Hart | 2a65575 | 2015-04-07 16:46:33 -0700 | [diff] [blame] | 103 | return Ethernet.deserializer().deserialize(pktin.getData(), 0, pktin.getData().length); |
| 104 | } catch (BufferUnderflowException | NullPointerException | |
| 105 | DeserializationException e) { |
| 106 | Logger log = LoggerFactory.getLogger(getClass()); |
| 107 | log.warn("packet deserialization problem"); |
Jonathan Hart | e8600eb | 2015-01-12 10:30:45 -0800 | [diff] [blame] | 108 | return null; |
| 109 | } |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 110 | } |
| 111 | |
| 112 | @Override |
| 113 | public Dpid dpid() { |
Changhoon Yoon | b856b81 | 2015-08-10 03:47:19 +0900 | [diff] [blame^] | 114 | checkPermission(PACKET_READ); |
Changhoon Yoon | 541ef71 | 2015-05-23 17:18:34 +0900 | [diff] [blame] | 115 | |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 116 | return new Dpid(sw.getId()); |
| 117 | } |
| 118 | |
Jonathan Hart | cc36be8 | 2015-04-09 11:54:56 -0700 | [diff] [blame] | 119 | /** |
| 120 | * Creates an OpenFlow packet context based on a packet-in. |
| 121 | * |
| 122 | * @param s OpenFlow switch |
| 123 | * @param pkt OpenFlow packet-in |
| 124 | * @return the OpenFlow packet context |
| 125 | */ |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 126 | public static OpenFlowPacketContext packetContextFromPacketIn(OpenFlowSwitch s, |
tom | 1679e18 | 2014-10-09 13:50:45 -0700 | [diff] [blame] | 127 | OFPacketIn pkt) { |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 128 | return new DefaultOpenFlowPacketContext(s, pkt); |
| 129 | } |
| 130 | |
| 131 | @Override |
| 132 | public Integer inPort() { |
Changhoon Yoon | b856b81 | 2015-08-10 03:47:19 +0900 | [diff] [blame^] | 133 | checkPermission(PACKET_READ); |
Changhoon Yoon | 541ef71 | 2015-05-23 17:18:34 +0900 | [diff] [blame] | 134 | |
Pavlin Radoslavov | 2031899 | 2015-02-04 13:41:14 -0800 | [diff] [blame] | 135 | return pktinInPort().getPortNumber(); |
alshabib | 6eb438a | 2014-10-01 16:39:37 -0700 | [diff] [blame] | 136 | } |
| 137 | |
Pavlin Radoslavov | 2031899 | 2015-02-04 13:41:14 -0800 | [diff] [blame] | 138 | private OFPort pktinInPort() { |
Jonathan Hart | cc36be8 | 2015-04-09 11:54:56 -0700 | [diff] [blame] | 139 | if (pktin.getVersion() == OFVersion.OF_10) { |
alshabib | 6eb438a | 2014-10-01 16:39:37 -0700 | [diff] [blame] | 140 | return pktin.getInPort(); |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 141 | } |
Jonathan Hart | cc36be8 | 2015-04-09 11:54:56 -0700 | [diff] [blame] | 142 | return pktin.getMatch().get(MatchField.IN_PORT); |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | @Override |
| 146 | public byte[] unparsed() { |
Changhoon Yoon | b856b81 | 2015-08-10 03:47:19 +0900 | [diff] [blame^] | 147 | checkPermission(PACKET_READ); |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 148 | |
| 149 | return pktin.getData().clone(); |
| 150 | |
| 151 | } |
| 152 | |
| 153 | private OFActionOutput buildOutput(Integer port) { |
| 154 | OFActionOutput act = sw.factory().actions() |
| 155 | .buildOutput() |
| 156 | .setPort(OFPort.of(port)) |
| 157 | .build(); |
| 158 | return act; |
| 159 | } |
| 160 | |
| 161 | @Override |
| 162 | public boolean block() { |
Changhoon Yoon | b856b81 | 2015-08-10 03:47:19 +0900 | [diff] [blame^] | 163 | checkPermission(PACKET_WRITE); |
Changhoon Yoon | 541ef71 | 2015-05-23 17:18:34 +0900 | [diff] [blame] | 164 | |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 165 | return free.getAndSet(false); |
| 166 | } |
| 167 | |
| 168 | @Override |
| 169 | public boolean isHandled() { |
Changhoon Yoon | b856b81 | 2015-08-10 03:47:19 +0900 | [diff] [blame^] | 170 | checkPermission(PACKET_READ); |
Changhoon Yoon | 541ef71 | 2015-05-23 17:18:34 +0900 | [diff] [blame] | 171 | |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 172 | return !free.get(); |
| 173 | } |
| 174 | |
alshabib | e9d3a32 | 2014-09-23 15:18:33 -0700 | [diff] [blame] | 175 | @Override |
| 176 | public boolean isBuffered() { |
Changhoon Yoon | b856b81 | 2015-08-10 03:47:19 +0900 | [diff] [blame^] | 177 | checkPermission(PACKET_READ); |
Changhoon Yoon | 541ef71 | 2015-05-23 17:18:34 +0900 | [diff] [blame] | 178 | |
alshabib | e9d3a32 | 2014-09-23 15:18:33 -0700 | [diff] [blame] | 179 | return isBuffered; |
| 180 | } |
| 181 | |
tom | 7ef8ff9 | 2014-09-17 13:08:06 -0700 | [diff] [blame] | 182 | } |