alshabib | b452fd7 | 2015-04-22 20:46:20 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 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 |
| 7 | * |
| 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. |
| 15 | */ |
| 16 | package org.onosproject.driver.handshaker; |
| 17 | |
| 18 | import org.onosproject.openflow.controller.driver.AbstractOpenFlowSwitch; |
| 19 | import org.onosproject.openflow.controller.driver.SwitchDriverSubHandshakeAlreadyStarted; |
| 20 | import org.onosproject.openflow.controller.driver.SwitchDriverSubHandshakeCompleted; |
| 21 | import org.onosproject.openflow.controller.driver.SwitchDriverSubHandshakeNotStarted; |
| 22 | import org.projectfloodlight.openflow.protocol.OFBarrierRequest; |
| 23 | import org.projectfloodlight.openflow.protocol.OFFlowMod; |
| 24 | import org.projectfloodlight.openflow.protocol.OFMessage; |
| 25 | import org.projectfloodlight.openflow.protocol.OFType; |
| 26 | import org.projectfloodlight.openflow.types.OFGroup; |
| 27 | import org.projectfloodlight.openflow.types.TableId; |
| 28 | |
| 29 | import java.util.Collections; |
| 30 | import java.util.concurrent.atomic.AtomicBoolean; |
| 31 | |
alshabib | b452fd7 | 2015-04-22 20:46:20 -0700 | [diff] [blame] | 32 | |
| 33 | /** |
Saurav Das | decd7a6 | 2015-05-16 22:39:47 -0700 | [diff] [blame] | 34 | * Corsa switch handshaker. |
alshabib | b452fd7 | 2015-04-22 20:46:20 -0700 | [diff] [blame] | 35 | */ |
Madan Jampani | 1b8ea34 | 2015-05-27 17:22:59 -0700 | [diff] [blame] | 36 | public class CorsaSwitchHandshaker extends AbstractOpenFlowSwitch { |
alshabib | b452fd7 | 2015-04-22 20:46:20 -0700 | [diff] [blame] | 37 | |
Madan Jampani | 1b8ea34 | 2015-05-27 17:22:59 -0700 | [diff] [blame] | 38 | private AtomicBoolean handshakeComplete = new AtomicBoolean(false); |
alshabib | b452fd7 | 2015-04-22 20:46:20 -0700 | [diff] [blame] | 39 | |
| 40 | private int barrierXid; |
| 41 | |
| 42 | |
| 43 | @Override |
| 44 | public Boolean supportNxRole() { |
| 45 | return false; |
| 46 | } |
| 47 | |
| 48 | @Override |
| 49 | public void startDriverHandshake() { |
| 50 | if (startDriverHandshakeCalled) { |
| 51 | throw new SwitchDriverSubHandshakeAlreadyStarted(); |
| 52 | } |
| 53 | startDriverHandshakeCalled = true; |
| 54 | OFFlowMod fm = factory().buildFlowDelete() |
| 55 | .setTableId(TableId.ALL) |
| 56 | .setOutGroup(OFGroup.ANY) |
| 57 | .build(); |
| 58 | |
| 59 | sendMsg(Collections.singletonList(fm)); |
| 60 | |
| 61 | barrierXid = getNextTransactionId(); |
| 62 | OFBarrierRequest barrier = factory().buildBarrierRequest() |
| 63 | .setXid(barrierXid).build(); |
| 64 | |
| 65 | |
alshabib | a2df7b2a | 2015-05-06 13:57:10 -0700 | [diff] [blame] | 66 | sendHandshakeMessage(barrier); |
alshabib | b452fd7 | 2015-04-22 20:46:20 -0700 | [diff] [blame] | 67 | |
| 68 | } |
| 69 | |
| 70 | @Override |
| 71 | public boolean isDriverHandshakeComplete() { |
| 72 | if (!startDriverHandshakeCalled) { |
| 73 | throw new SwitchDriverSubHandshakeAlreadyStarted(); |
| 74 | } |
Madan Jampani | 1b8ea34 | 2015-05-27 17:22:59 -0700 | [diff] [blame] | 75 | return handshakeComplete.get(); |
alshabib | b452fd7 | 2015-04-22 20:46:20 -0700 | [diff] [blame] | 76 | } |
| 77 | |
| 78 | @Override |
| 79 | public void processDriverHandshakeMessage(OFMessage m) { |
| 80 | if (!startDriverHandshakeCalled) { |
| 81 | throw new SwitchDriverSubHandshakeNotStarted(); |
| 82 | } |
Madan Jampani | 1b8ea34 | 2015-05-27 17:22:59 -0700 | [diff] [blame] | 83 | if (handshakeComplete.get()) { |
alshabib | b452fd7 | 2015-04-22 20:46:20 -0700 | [diff] [blame] | 84 | throw new SwitchDriverSubHandshakeCompleted(m); |
| 85 | } |
| 86 | if (m.getType() == OFType.BARRIER_REPLY && |
| 87 | m.getXid() == barrierXid) { |
Madan Jampani | 1b8ea34 | 2015-05-27 17:22:59 -0700 | [diff] [blame] | 88 | handshakeComplete.set(true); |
alshabib | b452fd7 | 2015-04-22 20:46:20 -0700 | [diff] [blame] | 89 | } |
| 90 | } |
| 91 | |
| 92 | } |