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/*
* Copyright 2014-2015 Open Networking Laboratory
*
* 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.provider.of.packet.impl;
import org.onlab.packet.DeserializationException;
import org.onlab.packet.Ethernet;
import org.onosproject.net.PortNumber;
import org.onosproject.net.flow.instructions.Instruction;
import org.onosproject.net.flow.instructions.Instruction.Type;
import org.onosproject.net.flow.instructions.Instructions.OutputInstruction;
import org.onosproject.net.packet.DefaultPacketContext;
import org.onosproject.net.packet.InboundPacket;
import org.onosproject.net.packet.OutboundPacket;
import org.onosproject.openflow.controller.OpenFlowPacketContext;
import org.projectfloodlight.openflow.types.OFPort;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
/**
* Packet context used with the OpenFlow providers.
*/
public class OpenFlowCorePacketContext extends DefaultPacketContext {
private static final Logger log = LoggerFactory.getLogger(OpenFlowCorePacketContext.class);
private final OpenFlowPacketContext ofPktCtx;
/**
* Creates a new OpenFlow core packet context.
*
* @param time creation time
* @param inPkt inbound packet
* @param outPkt outbound packet
* @param block whether the context is blocked or not
* @param ofPktCtx OpenFlow packet context
*/
protected OpenFlowCorePacketContext(long time, InboundPacket inPkt,
OutboundPacket outPkt, boolean block,
OpenFlowPacketContext ofPktCtx) {
super(time, inPkt, outPkt, block);
this.ofPktCtx = ofPktCtx;
}
@Override
public void send() {
if (!this.block()) {
if (outPacket() == null) {
sendPacket(null);
} else {
try {
Ethernet eth = Ethernet.deserializer()
.deserialize(outPacket().data().array(), 0,
outPacket().data().array().length);
sendPacket(eth);
} catch (DeserializationException e) {
log.warn("Unable to deserialize packet");
}
}
}
}
private void sendPacket(Ethernet eth) {
List<Instruction> ins = treatmentBuilder().build().allInstructions();
OFPort p = null;
//TODO: support arbitrary list of treatments must be supported in ofPacketContext
for (Instruction i : ins) {
if (i.type() == Type.OUTPUT) {
p = buildPort(((OutputInstruction) i).port());
break; //for now...
}
}
if (eth == null) {
ofPktCtx.build(p);
} else {
ofPktCtx.build(eth, p);
}
ofPktCtx.send();
}
private OFPort buildPort(PortNumber port) {
return OFPort.of((int) port.toLong());
}
}
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