org.onosproject.driver.pipeline.CpqdOFDPA2VlanPipeline Maven / Gradle / Ivy
/*
* Copyright 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.driver.pipeline;
import static org.slf4j.LoggerFactory.getLogger;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Deque;
import java.util.List;
import org.onlab.packet.Ethernet;
import org.onlab.packet.VlanId;
import org.onosproject.core.ApplicationId;
import org.onosproject.net.Port;
import org.onosproject.net.PortNumber;
import org.onosproject.net.behaviour.NextGroup;
import org.onosproject.net.flow.DefaultFlowRule;
import org.onosproject.net.flow.DefaultTrafficSelector;
import org.onosproject.net.flow.DefaultTrafficTreatment;
import org.onosproject.net.flow.FlowRule;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.TrafficTreatment;
import org.onosproject.net.flow.criteria.Criteria;
import org.onosproject.net.flow.criteria.Criterion;
import org.onosproject.net.flow.criteria.EthCriterion;
import org.onosproject.net.flow.criteria.EthTypeCriterion;
import org.onosproject.net.flow.criteria.PortCriterion;
import org.onosproject.net.flow.criteria.VlanIdCriterion;
import org.onosproject.net.flow.instructions.Instruction;
import org.onosproject.net.flow.instructions.Instructions.OutputInstruction;
import org.onosproject.net.flowobjective.ForwardingObjective;
import org.onosproject.net.flowobjective.ObjectiveError;
import org.onosproject.net.group.Group;
import org.onosproject.net.group.GroupKey;
import org.slf4j.Logger;
/**
* Driver for software switch emulation of the OFDPA 2.0 pipeline.
* The software switch is the CPqD OF 1.3 switch. Unfortunately the CPqD switch
* does not handle vlan tags and mpls labels simultaneously, which requires us
* to do some workarounds in the driver. This driver is meant for the use of
* the cpqd switch when MPLS is not a requirement from the ofdpa pipeline. As a
* result this driver correctly handles both incoming untagged and vlan-tagged
* packets.
*
*/
public class CpqdOFDPA2VlanPipeline extends CpqdOFDPA2Pipeline {
private final Logger log = getLogger(getClass());
/*
* Cpqd emulation does not handle vlan tags and mpls labels correctly.
* Since this driver does not deal with MPLS, there is no need for
* working around VLAN tags. In particular we do not pop off vlan tags in
* the middle of the pipeline.
*
* (non-Javadoc)
* @see org.onosproject.driver.pipeline.OFDPA2Pipeline#processEthDstFilter
*/
@Override
protected List processEthDstFilter(PortCriterion portCriterion,
EthCriterion ethCriterion,
VlanIdCriterion vidCriterion,
VlanId assignedVlan,
ApplicationId applicationId) {
// Consider PortNumber.ANY as wildcard. Match ETH_DST only
if (portCriterion != null && portCriterion.port() == PortNumber.ANY) {
return processEthDstOnlyFilter(ethCriterion, applicationId);
}
//handling untagged packets via assigned VLAN
if (vidCriterion.vlanId() == VlanId.NONE) {
vidCriterion = (VlanIdCriterion) Criteria.matchVlanId(assignedVlan);
}
// ofdpa cannot match on ALL portnumber, so we need to use separate
// rules for each port.
List portnums = new ArrayList();
if (portCriterion.port() == PortNumber.ALL) {
for (Port port : deviceService.getPorts(deviceId)) {
if (port.number().toLong() > 0 && port.number().toLong() < OFPP_MAX) {
portnums.add(port.number());
}
}
} else {
portnums.add(portCriterion.port());
}
List rules = new ArrayList();
for (PortNumber pnum : portnums) {
// for unicast IP packets
TrafficSelector.Builder selector = DefaultTrafficSelector.builder();
TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder();
selector.matchInPort(pnum);
selector.matchVlanId(vidCriterion.vlanId());
selector.matchEthType(Ethernet.TYPE_IPV4);
selector.matchEthDst(ethCriterion.mac());
treatment.transition(UNICAST_ROUTING_TABLE);
FlowRule rule = DefaultFlowRule.builder()
.forDevice(deviceId)
.withSelector(selector.build())
.withTreatment(treatment.build())
.withPriority(DEFAULT_PRIORITY)
.fromApp(applicationId)
.makePermanent()
.forTable(TMAC_TABLE).build();
rules.add(rule);
}
return rules;
}
/*
* In the OF-DPA 2.0 pipeline, versatile forwarding objectives go to the
* ACL table. Since we do not pop off vlans in the TMAC table we can continue
* to match on vlans in the ACL table if necessary.
*/
@Override
protected Collection processVersatile(ForwardingObjective fwd) {
log.info("Processing versatile forwarding objective");
EthTypeCriterion ethType =
(EthTypeCriterion) fwd.selector().getCriterion(Criterion.Type.ETH_TYPE);
if (ethType == null) {
log.error("Versatile forwarding objective must include ethType");
fail(fwd, ObjectiveError.BADPARAMS);
return Collections.emptySet();
}
if (fwd.nextId() == null && fwd.treatment() == null) {
log.error("Forwarding objective {} from {} must contain "
+ "nextId or Treatment", fwd.selector(), fwd.appId());
return Collections.emptySet();
}
TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder();
fwd.selector().criteria().forEach(criterion -> {
if (criterion instanceof VlanIdCriterion) {
VlanId vlanId = ((VlanIdCriterion) criterion).vlanId();
// ensure that match does not include vlan = NONE as OF-DPA does not
// match untagged packets this way in the ACL table.
if (vlanId.equals(VlanId.NONE)) {
return;
}
}
sbuilder.add(criterion);
});
// XXX driver does not currently do type checking as per Tables 65-67 in
// OFDPA 2.0 spec. The only allowed treatment is a punt to the controller.
TrafficTreatment.Builder ttBuilder = DefaultTrafficTreatment.builder();
if (fwd.treatment() != null) {
for (Instruction ins : fwd.treatment().allInstructions()) {
if (ins instanceof OutputInstruction) {
OutputInstruction o = (OutputInstruction) ins;
if (o.port() == PortNumber.CONTROLLER) {
ttBuilder.add(o);
} else {
log.warn("Only allowed treatments in versatile forwarding "
+ "objectives are punts to the controller");
}
} else {
log.warn("Cannot process instruction in versatile fwd {}", ins);
}
}
}
if (fwd.nextId() != null) {
// overide case
NextGroup next = getGroupForNextObjective(fwd.nextId());
List> gkeys = appKryo.deserialize(next.data());
// we only need the top level group's key to point the flow to it
Group group = groupService.getGroup(deviceId, gkeys.get(0).peekFirst());
if (group == null) {
log.warn("Group with key:{} for next-id:{} not found in dev:{}",
gkeys.get(0).peekFirst(), fwd.nextId(), deviceId);
fail(fwd, ObjectiveError.GROUPMISSING);
return Collections.emptySet();
}
ttBuilder.deferred().group(group.id());
}
FlowRule.Builder ruleBuilder = DefaultFlowRule.builder()
.fromApp(fwd.appId())
.withPriority(fwd.priority())
.forDevice(deviceId)
.withSelector(sbuilder.build())
.withTreatment(ttBuilder.build())
.makePermanent()
.forTable(ACL_TABLE);
return Collections.singletonList(ruleBuilder.build());
}
}
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