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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.flow.impl;
import org.onlab.packet.Ip4Address;
import org.onosproject.net.PortNumber;
import org.onosproject.net.driver.DriverService;
import org.onosproject.net.flow.FlowRule;
import org.onosproject.net.flow.TrafficTreatment;
import org.onosproject.net.flow.instructions.Instruction;
import org.onosproject.net.flow.instructions.Instructions.OutputInstruction;
import org.onosproject.net.flow.instructions.Instructions.SetQueueInstruction;
import org.onosproject.net.flow.instructions.L2ModificationInstruction;
import org.onosproject.net.flow.instructions.L2ModificationInstruction.ModEtherInstruction;
import org.onosproject.net.flow.instructions.L2ModificationInstruction.ModVlanIdInstruction;
import org.onosproject.net.flow.instructions.L2ModificationInstruction.ModVlanPcpInstruction;
import org.onosproject.net.flow.instructions.L3ModificationInstruction;
import org.onosproject.net.flow.instructions.L3ModificationInstruction.ModIPInstruction;
import org.projectfloodlight.openflow.protocol.OFFactory;
import org.projectfloodlight.openflow.protocol.OFFlowAdd;
import org.projectfloodlight.openflow.protocol.OFFlowDelete;
import org.projectfloodlight.openflow.protocol.OFFlowMod;
import org.projectfloodlight.openflow.protocol.OFFlowModFlags;
import org.projectfloodlight.openflow.protocol.action.OFAction;
import org.projectfloodlight.openflow.protocol.action.OFActionOutput;
import org.projectfloodlight.openflow.protocol.action.OFActionEnqueue;
import org.projectfloodlight.openflow.protocol.match.Match;
import org.projectfloodlight.openflow.types.IPv4Address;
import org.projectfloodlight.openflow.types.MacAddress;
import org.projectfloodlight.openflow.types.OFBufferId;
import org.projectfloodlight.openflow.types.OFPort;
import org.projectfloodlight.openflow.types.U64;
import org.projectfloodlight.openflow.types.VlanPcp;
import org.projectfloodlight.openflow.types.VlanVid;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Optional;
/**
* Flow mod builder for OpenFlow 1.0.
*/
public class FlowModBuilderVer10 extends FlowModBuilder {
private final Logger log = LoggerFactory.getLogger(getClass());
private static final int OFPCML_NO_BUFFER = 0xffff;
private final TrafficTreatment treatment;
/**
* Constructor for a flow mod builder for OpenFlow 1.0.
*
* @param flowRule the flow rule to transform into a flow mod
* @param factory the OpenFlow factory to use to build the flow mod
* @param xid the transaction ID
* @param driverService the device driver service
*/
protected FlowModBuilderVer10(FlowRule flowRule,
OFFactory factory, Optional xid,
Optional driverService) {
super(flowRule, factory, xid, driverService);
this.treatment = flowRule.treatment();
}
@Override
public OFFlowAdd buildFlowAdd() {
Match match = buildMatch();
List actions = buildActions();
long cookie = flowRule().id().value();
OFFlowAdd fm = factory().buildFlowAdd()
.setXid(xid)
.setCookie(U64.of(cookie))
.setBufferId(OFBufferId.NO_BUFFER)
.setActions(actions)
.setMatch(match)
.setFlags(Collections.singleton(OFFlowModFlags.SEND_FLOW_REM))
.setPriority(flowRule().priority())
.build();
return fm;
}
@Override
public OFFlowMod buildFlowMod() {
Match match = buildMatch();
List actions = buildActions();
long cookie = flowRule().id().value();
OFFlowMod fm = factory().buildFlowModify()
.setXid(xid)
.setCookie(U64.of(cookie))
.setBufferId(OFBufferId.NO_BUFFER)
.setActions(actions)
.setMatch(match)
.setFlags(Collections.singleton(OFFlowModFlags.SEND_FLOW_REM))
.setPriority(flowRule().priority())
.build();
return fm;
}
@Override
public OFFlowDelete buildFlowDel() {
Match match = buildMatch();
long cookie = flowRule().id().value();
OFFlowDelete fm = factory().buildFlowDelete()
.setXid(xid)
.setCookie(U64.of(cookie))
.setBufferId(OFBufferId.NO_BUFFER)
.setMatch(match)
.setFlags(Collections.singleton(OFFlowModFlags.SEND_FLOW_REM))
.setPriority(flowRule().priority())
.build();
return fm;
}
private List buildActions() {
List acts = new LinkedList<>();
OFAction act;
if (treatment == null) {
return acts;
}
for (Instruction i : treatment.immediate()) {
switch (i.type()) {
case DROP:
case NOACTION:
return Collections.emptyList();
case L2MODIFICATION:
act = buildL2Modification(i);
if (act != null) {
acts.add(buildL2Modification(i));
}
break;
case L3MODIFICATION:
act = buildL3Modification(i);
if (act != null) {
acts.add(buildL3Modification(i));
}
break;
case OUTPUT:
OutputInstruction out = (OutputInstruction) i;
OFActionOutput.Builder action = factory().actions().buildOutput()
.setPort(OFPort.of((int) out.port().toLong()));
if (out.port().equals(PortNumber.CONTROLLER)) {
action.setMaxLen(OFPCML_NO_BUFFER);
}
acts.add(action.build());
break;
case QUEUE:
SetQueueInstruction queue = (SetQueueInstruction) i;
if (queue.port() == null) {
log.warn("Required argument 'port' undefined for OFActionEnqueue");
}
OFActionEnqueue.Builder queueBuilder = factory().actions().buildEnqueue()
.setQueueId(queue.queueId())
.setPort(OFPort.ofInt((int) queue.port().toLong()));
acts.add(queueBuilder.build());
break;
case L0MODIFICATION:
case L1MODIFICATION:
case GROUP:
case TABLE:
case METADATA:
log.warn("Instruction type {} not supported with protocol version {}",
i.type(), factory().getVersion());
break;
default:
log.warn("Instruction type {} not yet implemented.", i.type());
}
}
return acts;
}
private OFAction buildL3Modification(Instruction i) {
L3ModificationInstruction l3m = (L3ModificationInstruction) i;
ModIPInstruction ip;
Ip4Address ip4;
switch (l3m.subtype()) {
case IPV4_SRC:
ip = (ModIPInstruction) i;
ip4 = ip.ip().getIp4Address();
return factory().actions().setNwSrc(IPv4Address.of(ip4.toInt()));
case IPV4_DST:
ip = (ModIPInstruction) i;
ip4 = ip.ip().getIp4Address();
return factory().actions().setNwDst(IPv4Address.of(ip4.toInt()));
default:
log.warn("Unimplemented action type {}.", l3m.subtype());
break;
}
return null;
}
private OFAction buildL2Modification(Instruction i) {
L2ModificationInstruction l2m = (L2ModificationInstruction) i;
ModEtherInstruction eth;
switch (l2m.subtype()) {
case ETH_DST:
eth = (ModEtherInstruction) l2m;
return factory().actions().setDlDst(MacAddress.of(eth.mac().toLong()));
case ETH_SRC:
eth = (ModEtherInstruction) l2m;
return factory().actions().setDlSrc(MacAddress.of(eth.mac().toLong()));
case VLAN_ID:
ModVlanIdInstruction vlanId = (ModVlanIdInstruction) l2m;
return factory().actions().setVlanVid(VlanVid.ofVlan(vlanId.vlanId().toShort()));
case VLAN_PCP:
ModVlanPcpInstruction vlanPcp = (ModVlanPcpInstruction) l2m;
return factory().actions().setVlanPcp(VlanPcp.of(vlanPcp.vlanPcp()));
case VLAN_POP:
return factory().actions().stripVlan();
case VLAN_PUSH:
return null;
default:
log.warn("Unimplemented action type {}.", l2m.subtype());
break;
}
return null;
}
}
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