Examples with TrafficSelector org.onosproject.net.flow.TrafficSelector used on opensource projects

Example 26 with TrafficSelector

use of org.onosproject.net.flow.TrafficSelector in project onos by opennetworkinglab.

the class OvsOfdpaGroupHandler method processEcmpHashedNextObjective.

/**
 * In OFDPA2 we do not support the MPLS-ECMP, while we do in
 * Open vSwitch implementation.
 *
 * @param nextObjective the hashed next objective to support.
 */
@Override
protected void processEcmpHashedNextObjective(NextObjective nextObjective) {
    // The case for MPLS-ECMP. For now, we try to create a MPLS-ECMP for
    // the transport of a VPWS. The necessary info are contained in the
    // meta selector. In particular we are looking for the case of BoS==False;
    TrafficSelector metaSelector = nextObjective.meta();
    if (metaSelector != null && OfdpaPipelineUtility.isNotMplsBos(metaSelector)) {
        // storage for all group keys in the chain of groups created
        List<Deque<GroupKey>> allGroupKeys = new ArrayList<>();
        List<GroupInfo> unsentGroups = new ArrayList<>();
        createEcmpHashBucketChains(nextObjective, allGroupKeys, unsentGroups);
        // now we can create the outermost MPLS ECMP group
        List<GroupBucket> mplsEcmpGroupBuckets = new ArrayList<>();
        for (GroupInfo gi : unsentGroups) {
            // create ECMP bucket to point to the outer group
            TrafficTreatment.Builder ttb = DefaultTrafficTreatment.builder();
            ttb.group(new GroupId(gi.nextGroupDesc().givenGroupId()));
            GroupBucket sbucket = DefaultGroupBucket.createSelectGroupBucket(ttb.build());
            mplsEcmpGroupBuckets.add(sbucket);
        }
        int mplsEcmpIndex = getNextAvailableIndex();
        int mplsEcmpGroupId = makeMplsForwardingGroupId(OfdpaMplsGroupSubType.MPLS_ECMP, mplsEcmpIndex);
        GroupKey mplsEmpGroupKey = new DefaultGroupKey(Ofdpa2Pipeline.appKryo.serialize(mplsEcmpIndex));
        GroupDescription mplsEcmpGroupDesc = new DefaultGroupDescription(deviceId, GroupDescription.Type.SELECT, new GroupBuckets(mplsEcmpGroupBuckets), mplsEmpGroupKey, mplsEcmpGroupId, nextObjective.appId());
        GroupChainElem mplsEcmpGce = new GroupChainElem(mplsEcmpGroupDesc, mplsEcmpGroupBuckets.size(), false, deviceId);
        // create objects for local and distributed storage
        allGroupKeys.forEach(gkeyChain -> gkeyChain.addFirst(mplsEmpGroupKey));
        OfdpaNextGroup ofdpaGrp = new OfdpaNextGroup(allGroupKeys, nextObjective);
        // store mplsEcmpGroupKey with the ofdpaGroupChain for the nextObjective
        // that depends on it
        updatePendingNextObjective(mplsEmpGroupKey, ofdpaGrp);
        log.debug("Trying MPLS-ECMP: device:{} gid:{} gkey:{} nextId:{}", deviceId, Integer.toHexString(mplsEcmpGroupId), mplsEmpGroupKey, nextObjective.id());
        // finally we are ready to send the innermost groups
        for (GroupInfo gi : unsentGroups) {
            log.debug("Sending innermost group {} in group chain on device {} ", Integer.toHexString(gi.innerMostGroupDesc().givenGroupId()), deviceId);
            updatePendingGroups(gi.nextGroupDesc().appCookie(), mplsEcmpGce);
            groupService.addGroup(gi.innerMostGroupDesc());
        }
        return;
    }
    super.processEcmpHashedNextObjective(nextObjective);
}

Example 27 with TrafficSelector

use of org.onosproject.net.flow.TrafficSelector in project onos by opennetworkinglab.

the class OvsOfdpaPipeline method processEthDstSpecific.

@Override
protected Collection<FlowRule> processEthDstSpecific(ForwardingObjective fwd) {
    List<FlowRule> rules = new ArrayList<>();
    // Build filtered selector
    TrafficSelector selector = fwd.selector();
    EthCriterion ethCriterion = (EthCriterion) selector.getCriterion(Criterion.Type.ETH_DST);
    VlanIdCriterion vlanIdCriterion = (VlanIdCriterion) selector.getCriterion(VLAN_VID);
    if (vlanIdCriterion == null) {
        log.warn("Forwarding objective for bridging requires vlan. Not " + "installing fwd:{} in dev:{}", fwd.id(), deviceId);
        fail(fwd, ObjectiveError.BADPARAMS);
        return Collections.emptySet();
    }
    TrafficSelector.Builder filteredSelectorBuilder = DefaultTrafficSelector.builder();
    // Do not match MacAddress for subnet broadcast entry
    if (!ethCriterion.mac().equals(NONE) && !ethCriterion.mac().equals(BROADCAST)) {
        filteredSelectorBuilder.matchEthDst(ethCriterion.mac());
        log.debug("processing L2 forwarding objective:{} -> next:{} in dev:{}", fwd.id(), fwd.nextId(), deviceId);
    } else {
        log.debug("processing L2 Broadcast forwarding objective:{} -> next:{} " + "in dev:{} for vlan:{}", fwd.id(), fwd.nextId(), deviceId, vlanIdCriterion.vlanId());
    }
    filteredSelectorBuilder.matchVlanId(vlanIdCriterion.vlanId());
    TrafficSelector filteredSelector = filteredSelectorBuilder.build();
    if (fwd.treatment() != null) {
        log.warn("Ignoring traffic treatment in fwd rule {} meant for L2 table" + "for dev:{}. Expecting only nextId", fwd.id(), deviceId);
    }
    TrafficTreatment.Builder treatmentBuilder = DefaultTrafficTreatment.builder();
    if (fwd.nextId() != null) {
        NextGroup next = getGroupForNextObjective(fwd.nextId());
        if (next != null) {
            List<Deque<GroupKey>> 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) {
                treatmentBuilder.deferred().group(group.id());
            } else {
                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();
            }
        }
    }
    treatmentBuilder.immediate().transition(ACL_TABLE);
    TrafficTreatment filteredTreatment = treatmentBuilder.build();
    // Build bridging table entries
    FlowRule.Builder flowRuleBuilder = DefaultFlowRule.builder();
    flowRuleBuilder.fromApp(fwd.appId()).withPriority(fwd.priority()).forDevice(deviceId).withSelector(filteredSelector).withTreatment(filteredTreatment).forTable(BRIDGING_TABLE);
    if (fwd.permanent()) {
        flowRuleBuilder.makePermanent();
    } else {
        flowRuleBuilder.makeTemporary(fwd.timeout());
    }
    rules.add(flowRuleBuilder.build());
    return rules;
}

Example 28 with TrafficSelector

use of org.onosproject.net.flow.TrafficSelector in project onos by opennetworkinglab.

the class OvsOfdpaPipeline method processEthTypeSpecific.

/*
     * Open vSwitch emulation allows MPLS ECMP.
     *
     * (non-Javadoc)
     * @see org.onosproject.driver.pipeline.OFDPA2Pipeline#processEthTypeSpecific
     */
@Override
protected Collection<FlowRule> processEthTypeSpecific(ForwardingObjective fwd) {
    if (isDoubleTagged(fwd)) {
        return processDoubleTaggedFwd(fwd);
    }
    TrafficSelector selector = fwd.selector();
    EthTypeCriterion ethType = (EthTypeCriterion) selector.getCriterion(Criterion.Type.ETH_TYPE);
    if ((ethType == null) || (ethType.ethType().toShort() != Ethernet.TYPE_IPV4) && (ethType.ethType().toShort() != Ethernet.MPLS_UNICAST) && (ethType.ethType().toShort() != Ethernet.TYPE_IPV6)) {
        log.warn("processSpecific: Unsupported forwarding objective criteria" + "ethType:{} in dev:{}", ethType, deviceId);
        fail(fwd, ObjectiveError.UNSUPPORTED);
        return Collections.emptySet();
    }
    boolean defaultRule = false;
    int forTableId;
    TrafficSelector.Builder filteredSelector = DefaultTrafficSelector.builder();
    TrafficSelector.Builder complementarySelector = DefaultTrafficSelector.builder();
    if (ethType.ethType().toShort() == Ethernet.TYPE_IPV4) {
        IpPrefix ipv4Dst = ((IPCriterion) selector.getCriterion(Criterion.Type.IPV4_DST)).ip();
        if (ipv4Dst.isMulticast()) {
            if (ipv4Dst.prefixLength() != 32) {
                log.warn("Multicast specific forwarding objective can only be /32");
                fail(fwd, ObjectiveError.BADPARAMS);
                return ImmutableSet.of();
            }
            VlanId assignedVlan = readVlanFromSelector(fwd.meta());
            if (assignedVlan == null) {
                log.warn("VLAN ID required by multicast specific fwd obj is missing. Abort.");
                fail(fwd, ObjectiveError.BADPARAMS);
                return ImmutableSet.of();
            }
            filteredSelector.matchVlanId(assignedVlan);
            filteredSelector.matchEthType(Ethernet.TYPE_IPV4).matchIPDst(ipv4Dst);
            forTableId = MULTICAST_ROUTING_TABLE;
            log.debug("processing IPv4 multicast specific forwarding objective {} -> next:{}" + " in dev:{}", fwd.id(), fwd.nextId(), deviceId);
        } else {
            if (ipv4Dst.prefixLength() == 0) {
                // The entire IPV4_DST field is wildcarded intentionally
                filteredSelector.matchEthType(Ethernet.TYPE_IPV4);
            } else {
                filteredSelector.matchEthType(Ethernet.TYPE_IPV4).matchIPDst(ipv4Dst);
            }
            forTableId = UNICAST_ROUTING_TABLE;
            log.debug("processing IPv4 unicast specific forwarding objective {} -> next:{}" + " in dev:{}", fwd.id(), fwd.nextId(), deviceId);
        }
    } else if (ethType.ethType().toShort() == Ethernet.TYPE_IPV6) {
        IpPrefix ipv6Dst = ((IPCriterion) selector.getCriterion(Criterion.Type.IPV6_DST)).ip();
        if (ipv6Dst.isMulticast()) {
            if (ipv6Dst.prefixLength() != IpAddress.INET6_BIT_LENGTH) {
                log.debug("Multicast specific IPv6 forwarding objective can only be /128");
                fail(fwd, ObjectiveError.BADPARAMS);
                return ImmutableSet.of();
            }
            VlanId assignedVlan = readVlanFromSelector(fwd.meta());
            if (assignedVlan == null) {
                log.debug("VLAN ID required by multicast specific fwd obj is missing. Abort.");
                fail(fwd, ObjectiveError.BADPARAMS);
                return ImmutableSet.of();
            }
            filteredSelector.matchVlanId(assignedVlan);
            filteredSelector.matchEthType(Ethernet.TYPE_IPV6).matchIPv6Dst(ipv6Dst);
            forTableId = MULTICAST_ROUTING_TABLE;
            log.debug("processing IPv6 multicast specific forwarding objective {} -> next:{}" + " in dev:{}", fwd.id(), fwd.nextId(), deviceId);
        } else {
            if (buildIpv6Selector(filteredSelector, fwd) < 0) {
                return Collections.emptyList();
            }
            forTableId = UNICAST_ROUTING_TABLE;
        }
    } else {
        filteredSelector.matchEthType(Ethernet.MPLS_UNICAST).matchMplsLabel(((MplsCriterion) selector.getCriterion(Criterion.Type.MPLS_LABEL)).label());
        MplsBosCriterion bos = (MplsBosCriterion) selector.getCriterion(Criterion.Type.MPLS_BOS);
        if (bos != null) {
            filteredSelector.matchMplsBos(bos.mplsBos());
        }
        forTableId = MPLS_TABLE_1;
        log.debug("processing MPLS specific forwarding objective {} -> next:{}" + " in dev {}", fwd.id(), fwd.nextId(), deviceId);
    }
    TrafficTreatment.Builder tb = DefaultTrafficTreatment.builder();
    if (fwd.treatment() != null) {
        for (Instruction i : fwd.treatment().allInstructions()) {
            if (i instanceof L3ModificationInstruction) {
                L3ModificationInstruction l3instr = (L3ModificationInstruction) i;
                if (l3instr.subtype().equals(L3ModificationInstruction.L3SubType.TTL_IN) || l3instr.subtype().equals(L3ModificationInstruction.L3SubType.TTL_OUT)) {
                    continue;
                }
            }
            /*
                 * NOTE: OF-DPA does not support immediate instruction in
                 * L3 unicast and MPLS table.
                 */
            tb.deferred().add(i);
        }
    }
    if (fwd.nextId() != null) {
        NextGroup next = getGroupForNextObjective(fwd.nextId());
        if (next != null) {
            List<Deque<GroupKey>> 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();
            }
            tb.deferred().group(group.id());
        }
    }
    tb.transition(ACL_TABLE);
    FlowRule.Builder ruleBuilder = DefaultFlowRule.builder().fromApp(fwd.appId()).withPriority(fwd.priority()).forDevice(deviceId).withSelector(filteredSelector.build()).withTreatment(tb.build()).forTable(forTableId);
    if (fwd.permanent()) {
        ruleBuilder.makePermanent();
    } else {
        ruleBuilder.makeTemporary(fwd.timeout());
    }
    Collection<FlowRule> flowRuleCollection = new ArrayList<>();
    flowRuleCollection.add(ruleBuilder.build());
    if (defaultRule) {
        flowRuleCollection.add(defaultRoute(fwd, complementarySelector, forTableId, tb));
        log.debug("Default rule 0.0.0.0/0 is being installed two rules");
    }
    return flowRuleCollection;
}

Example 29 with TrafficSelector

use of org.onosproject.net.flow.TrafficSelector in project onos by opennetworkinglab.

the class OfdpaPipelineTraceable method apply.

@Override
public PipelineTraceableOutput apply(PipelineTraceableInput input) {
    PipelineTraceableOutput.Builder outputBuilder = PipelineTraceableOutput.builder();
    log.debug("Current packet {} - applying flow tables", input.ingressPacket());
    List<FlowEntry> outputFlows = new ArrayList<>();
    List<Instruction> deferredInstructions = new ArrayList<>();
    PipelineTraceableHitChain currentHitChain = PipelineTraceableHitChain.emptyHitChain();
    TrafficSelector currentPacket = DefaultTrafficSelector.builder(input.ingressPacket().packet()).build();
    // Init step - find out the first table
    int initialTableId = -1;
    FlowEntry nextTableIdEntry = findNextTableIdEntry(initialTableId, input.flows());
    if (nextTableIdEntry == null) {
        currentHitChain.setEgressPacket(new PipelineTraceablePacket(currentPacket));
        currentHitChain.dropped();
        return outputBuilder.appendToLog("No flow rules for device " + deviceId + ". Aborting").noFlows().addHitChain(currentHitChain).build();
    }
    // Iterates over the flow tables until the end of the pipeline
    TableId tableId = nextTableIdEntry.table();
    FlowEntry flowEntry;
    boolean lastTable = false;
    while (!lastTable) {
        log.debug("Searching a Flow Entry on table {} for packet {}", tableId, currentPacket);
        // Gets the rule that matches the incoming packet
        flowEntry = matchHighestPriority(currentPacket, tableId, input.flows());
        log.debug("Found Flow Entry {}", flowEntry);
        // If the flow entry on a table is null and we are on hardware we treat as table miss, with few exceptions
        if (flowEntry == null && isHardwareSwitch()) {
            log.debug("Ofdpa Hw setup, no flow rule means table miss");
            if (((IndexTableId) tableId).id() == MPLS_L3_TYPE_TABLE) {
                // Apparently a miss but Table 27 on OFDPA is a fixed table
                currentPacket = handleOfdpa27FixedTable(input.ingressPacket().packet(), currentPacket);
                // The nextTable should be ACL
                tableId = IndexTableId.of(ACL_TABLE - 1);
            }
            // Finding next table to go In case of miss
            nextTableIdEntry = findNextTableIdEntry(((IndexTableId) tableId).id(), input.flows());
            log.debug("Next table id entry {}", nextTableIdEntry);
            // (another possibility is max tableId)
            if (nextTableIdEntry == null && currentHitChain.hitChain().size() == 0) {
                currentHitChain.setEgressPacket(new PipelineTraceablePacket(currentPacket));
                currentHitChain.dropped();
                return outputBuilder.appendToLog("No flow rules for device " + deviceId + ". Aborting").noFlows().addHitChain(currentHitChain).build();
            } else if (nextTableIdEntry == null) {
                // Means that no more flow rules are present
                lastTable = true;
            } else if (((IndexTableId) tableId).id() == TMAC_TABLE) {
                // If the table is 20 OFDPA skips to table 50
                log.debug("A miss on Table 20 on OFDPA means that we skip directly to table 50");
                tableId = IndexTableId.of(BRIDGING_TABLE);
            } else if (((IndexTableId) tableId).id() == MULTICAST_ROUTING_TABLE) {
                // If the table is 40 OFDPA skips to table 60
                log.debug("A miss on Table 40 on OFDPA means that we skip directly to table 60");
                tableId = IndexTableId.of(ACL_TABLE);
            } else {
                tableId = nextTableIdEntry.table();
            }
        } else if (flowEntry == null) {
            currentHitChain.setEgressPacket(new PipelineTraceablePacket(currentPacket));
            currentHitChain.dropped();
            return outputBuilder.appendToLog("Packet has no match on table " + tableId + " in device " + deviceId + ". Dropping").noFlows().addHitChain(currentHitChain).build();
        } else {
            // If the table has a transition
            if (flowEntry.treatment().tableTransition() != null) {
                // Updates the next table we transitions to
                tableId = IndexTableId.of(flowEntry.treatment().tableTransition().tableId());
                log.debug("Flow Entry has transition to table Id {}", tableId);
                currentHitChain.addDataPlaneEntity(new DataPlaneEntity(flowEntry));
            } else {
                // Table has no transition so it means that it's an output rule if on the last table
                log.debug("Flow Entry has no transition to table, treating as last rule {}", flowEntry);
                currentHitChain.addDataPlaneEntity(new DataPlaneEntity(flowEntry));
                outputFlows.add(flowEntry);
                lastTable = true;
            }
            // Updates the packet according to the immediate actions of this flow rule.
            currentPacket = updatePacket(currentPacket, flowEntry.treatment().immediate()).build();
            // Saves the deferred rules for later maintaining the order
            deferredInstructions.addAll(flowEntry.treatment().deferred());
            // If the flow requires to clear deferred actions we do so for all the ones we encountered.
            if (flowEntry.treatment().clearedDeferred()) {
                deferredInstructions.clear();
            }
            // On table 10 OFDPA needs two rules to apply the vlan if none and then to transition to the next table.
            if (shouldMatchSecondVlanFlow(flowEntry)) {
                // Let's get the packet vlanId instruction
                VlanIdCriterion packetVlanIdCriterion = (VlanIdCriterion) currentPacket.getCriterion(Criterion.Type.VLAN_VID);
                // Let's get the flow entry vlan mod instructions
                ModVlanIdInstruction entryModVlanIdInstruction = (ModVlanIdInstruction) flowEntry.treatment().immediate().stream().filter(instruction -> instruction instanceof ModVlanIdInstruction).findFirst().orElse(null);
                // is a flow rule that matches on same criteria and with updated vlanId
                if (entryModVlanIdInstruction != null) {
                    FlowEntry secondVlanFlow = getSecondFlowEntryOnTable10(currentPacket, packetVlanIdCriterion, entryModVlanIdInstruction, input.flows());
                    // We found the flow that we expected
                    if (secondVlanFlow != null) {
                        currentHitChain.addDataPlaneEntity(new DataPlaneEntity(secondVlanFlow));
                    } else {
                        currentHitChain.setEgressPacket(new PipelineTraceablePacket(currentPacket));
                        currentHitChain.dropped();
                        return outputBuilder.appendToLog("Missing forwarding rule for tagged" + " packet on " + deviceId).noFlows().addHitChain(currentHitChain).build();
                    }
                }
            }
        }
    }
    // Creating a modifiable builder for the egress packet
    TrafficSelector.Builder egressPacket = DefaultTrafficSelector.builder(currentPacket);
    log.debug("Current packet {} - applying output flows", currentPacket);
    // Handling output flows which basically means handling output to controller.
    // OVS and OFDPA have both immediate -> OUTPUT:CONTROLLER. Theoretically there is no
    // need to reflect the updates performed on the packets and on the chain.
    List<PortNumber> outputPorts = new ArrayList<>();
    handleOutputFlows(currentPacket, outputFlows, egressPacket, outputPorts, currentHitChain, outputBuilder, input.ingressPacket().packet());
    // Immediate instructions
    log.debug("Current packet {} - applying immediate instructions", currentPacket);
    // Handling immediate instructions which basically means handling output to controller.
    // OVS has immediate -> group -> OUTPUT:CONTROLLER.
    List<DataPlaneEntity> entries = ImmutableList.copyOf(currentHitChain.hitChain());
    // Go to the next step - using a copy of the egress packet and of the hit chain
    PipelineTraceableHitChain newHitChain = PipelineTraceableHitChain.emptyHitChain();
    currentHitChain.hitChain().forEach(newHitChain::addDataPlaneEntity);
    TrafficSelector.Builder newEgressPacket = DefaultTrafficSelector.builder(egressPacket.build());
    for (DataPlaneEntity entry : entries) {
        flowEntry = entry.getFlowEntry();
        if (flowEntry != null) {
            getGroupsFromInstructions(input.groups(), flowEntry.treatment().immediate(), newEgressPacket, outputPorts, newHitChain, outputBuilder, input, false);
        }
    }
    // Deferred instructions
    log.debug("Current packet {} - applying deferred instructions", egressPacket.build());
    // egress packet and of the hit chain. This is the last step.
    if (deferredInstructions.size() > 0) {
        handleDeferredActions(egressPacket.build(), input.groups(), deferredInstructions, outputPorts, currentHitChain, outputBuilder, input);
    }
    // Let's store the partial hit chain and set a message
    if (outputPorts.isEmpty()) {
        currentHitChain.setEgressPacket(new PipelineTraceablePacket(egressPacket.build()));
        currentHitChain.dropped();
        outputBuilder.appendToLog("Packet has no output in device " + deviceId + ". Dropping").dropped().addHitChain(currentHitChain);
    }
    // Done!
    return outputBuilder.build();
}

Example 30 with TrafficSelector

use of org.onosproject.net.flow.TrafficSelector in project onos by opennetworkinglab.

the class OfdpaPipelineTraceable method handleVlanToController.

// If the initial packet comes tagged with a Vlan we output it with that to ONOS.
// If ONOS applied a vlan we remove it.
// TODO Candidate for an AbstractBehavior implementation
private void handleVlanToController(PipelineTraceableHitChain currentHitChain, TrafficSelector initialPacket) {
    VlanIdCriterion initialVid = (VlanIdCriterion) initialPacket.getCriterion(Criterion.Type.VLAN_VID);
    VlanIdCriterion finalVid = (VlanIdCriterion) currentHitChain.egressPacket().packet().getCriterion(Criterion.Type.VLAN_VID);
    if (initialVid != null && !initialVid.equals(finalVid) && initialVid.vlanId().equals(VlanId.NONE)) {
        Set<Criterion> finalCriteria = new HashSet<>(currentHitChain.egressPacket().packet().criteria());
        // removing the final vlanId
        finalCriteria.remove(finalVid);
        TrafficSelector.Builder packetUpdated = DefaultTrafficSelector.builder();
        finalCriteria.forEach(packetUpdated::add);
        // Initial was none so we set it to that
        packetUpdated.add(Criteria.matchVlanId(VlanId.NONE));
        // Update final packet
        currentHitChain.setEgressPacket(new PipelineTraceablePacket(packetUpdated.build()));
    }
}