Examples with Builder org.onosproject.net.flowobjective.ForwardingObjective.Builder used on opensource projects

Example 1 with Builder

use of org.onosproject.net.flowobjective.ForwardingObjective.Builder in project trellis-control by opennetworkinglab.

the class RoutingRulePopulator method getMplsForwardingObjective.

/**
 * Returns a Forwarding Objective builder for the MPLS rule that references
 * the desired Next Objective. Creates a DestinationSet that allows the
 * groupHandler to create or find the required next objective.
 *
 * @param targetSw the target sw
 * @param nextHops the set of next hops
 * @param phpRequired true if penultimate-hop-popping is required
 * @param isBos true if matched label is bottom-of-stack
 * @param meta metadata for creating next objective
 * @param routerIp the router ip representing the destination switch
 * @param destSw the destination sw
 * @return the mpls forwarding objective builder
 */
private ForwardingObjective.Builder getMplsForwardingObjective(DeviceId targetSw, Set<DeviceId> nextHops, boolean phpRequired, boolean isBos, TrafficSelector meta, IpAddress routerIp, int segmentId, DeviceId destSw) {
    ForwardingObjective.Builder fwdBuilder = DefaultForwardingObjective.builder().withFlag(ForwardingObjective.Flag.SPECIFIC);
    TrafficTreatment.Builder tbuilder = DefaultTrafficTreatment.builder();
    DestinationSet ds = null;
    DestinationSet.DestinationSetType dstType = null;
    boolean simple = false;
    if (phpRequired) {
        // php case - pop should always be flow-action
        log.debug("getMplsForwardingObjective: php required");
        tbuilder.deferred().copyTtlIn();
        if (isBos) {
            if (routerIp.isIp4()) {
                tbuilder.deferred().popMpls(EthType.EtherType.IPV4.ethType());
            } else {
                tbuilder.deferred().popMpls(EthType.EtherType.IPV6.ethType());
            }
            tbuilder.decNwTtl();
            // standard case -> BoS == True; pop results in IP packet and forwarding
            // is via an ECMP group
            ds = DestinationSet.createTypePopBos(destSw);
        } else {
            tbuilder.deferred().popMpls(EthType.EtherType.MPLS_UNICAST.ethType()).decMplsTtl();
            // double-label case -> BoS == False, pop results in MPLS packet
            // depending on configuration we can ECMP this packet or choose one output
            ds = DestinationSet.createTypePopNotBos(destSw);
            if (!srManager.getMplsEcmp()) {
                simple = true;
            }
        }
    } else {
        // swap with self case - SR CONTINUE
        log.debug("getMplsForwardingObjective: swap with self");
        tbuilder.deferred().decMplsTtl();
        // swap results in MPLS packet with same BoS bit regardless of bit value
        // depending on configuration we can ECMP this packet or choose one output
        // differentiate here between swap with not bos or swap with bos
        ds = isBos ? DestinationSet.createTypeSwapBos(segmentId, destSw) : DestinationSet.createTypeSwapNotBos(segmentId, destSw);
        if (!srManager.getMplsEcmp()) {
            simple = true;
        }
    }
    fwdBuilder.withTreatment(tbuilder.build());
    log.debug("Trying to get a nextObjId for mpls rule on device:{} to ds:{}", targetSw, ds);
    DefaultGroupHandler gh = srManager.getGroupHandler(targetSw);
    if (gh == null) {
        log.warn("getNextObjectiveId query - groupHandler for device {} " + "not found", targetSw);
        return null;
    }
    Map<DeviceId, Set<DeviceId>> dstNextHops = new HashMap<>();
    dstNextHops.put(destSw, nextHops);
    int nextId = gh.getNextObjectiveId(ds, dstNextHops, meta, simple);
    if (nextId <= 0) {
        log.warn("No next objective in {} for ds: {}", targetSw, ds);
        return null;
    } else {
        log.debug("nextObjId found:{} for mpls rule on device:{} to ds:{}", nextId, targetSw, ds);
    }
    fwdBuilder.nextStep(nextId);
    return fwdBuilder;
}

Example 2 with Builder

use of org.onosproject.net.flowobjective.ForwardingObjective.Builder in project trellis-control by opennetworkinglab.

the class RoutingRulePopulator method handleMpls.

/**
 * Differentiates between popping and swapping labels when building an MPLS
 * forwarding objective.
 *
 * @param targetSwId the target sw
 * @param destSwId the destination sw
 * @param nextHops the set of next hops
 * @param segmentId the segmentId to match representing the destination
 *            switch
 * @param routerIp the router ip representing the destination switch
 * @return a collection of fwdobjective
 */
private Collection<ForwardingObjective> handleMpls(DeviceId targetSwId, DeviceId destSwId, Set<DeviceId> nextHops, int segmentId, IpAddress routerIp, boolean isMplsBos) {
    TrafficSelector.Builder sbuilder = DefaultTrafficSelector.builder();
    List<ForwardingObjective.Builder> fwdObjBuilders = Lists.newArrayList();
    // For the transport of Pwaas we can use two or three MPLS label
    sbuilder.matchEthType(Ethernet.MPLS_UNICAST);
    sbuilder.matchMplsLabel(MplsLabel.mplsLabel(segmentId));
    sbuilder.matchMplsBos(isMplsBos);
    TrafficSelector selector = sbuilder.build();
    // setup metadata to pass to nextObjective - indicate the vlan on egress
    // if needed by the switch pipeline. Since mpls next-hops are always to
    // other neighboring routers, there is no subnet assigned on those ports.
    TrafficSelector.Builder metabuilder = DefaultTrafficSelector.builder(selector);
    metabuilder.matchVlanId(srManager.getDefaultInternalVlan());
    if (nextHops.size() == 1 && destSwId.equals(nextHops.toArray()[0])) {
        // If the next hop is the destination router for the segment, do pop
        log.debug("populateMplsRule: Installing MPLS forwarding objective for " + "label {} in switch {} with pop to next-hops {}", segmentId, targetSwId, nextHops);
        ForwardingObjective.Builder fwdObjNoBosBuilder = getMplsForwardingObjective(targetSwId, nextHops, true, isMplsBos, metabuilder.build(), routerIp, segmentId, destSwId);
        // Error case, we cannot handle, exit.
        if (fwdObjNoBosBuilder == null) {
            return Collections.emptyList();
        }
        fwdObjBuilders.add(fwdObjNoBosBuilder);
    } else {
        // next hop is not destination, irrespective of the number of next
        // hops (1 or more) -- SR CONTINUE case (swap with self)
        log.debug("Installing MPLS forwarding objective for " + "label {} in switch {} without pop to next-hops {}", segmentId, targetSwId, nextHops);
        ForwardingObjective.Builder fwdObjNoBosBuilder = getMplsForwardingObjective(targetSwId, nextHops, false, isMplsBos, metabuilder.build(), routerIp, segmentId, destSwId);
        // Error case, we cannot handle, exit.
        if (fwdObjNoBosBuilder == null) {
            return Collections.emptyList();
        }
        fwdObjBuilders.add(fwdObjNoBosBuilder);
    }
    List<ForwardingObjective> fwdObjs = Lists.newArrayList();
    // We add the final property to the fwdObjs.
    for (ForwardingObjective.Builder fwdObjBuilder : fwdObjBuilders) {
        ((Builder) ((Builder) fwdObjBuilder.fromApp(srManager.appId).makePermanent()).withSelector(selector).withPriority(SegmentRoutingService.DEFAULT_PRIORITY)).withFlag(ForwardingObjective.Flag.SPECIFIC);
        ObjectiveContext context = new DefaultObjectiveContext((objective) -> log.debug("MPLS rule {} for SID {} populated in dev:{} ", objective.id(), segmentId, targetSwId), (objective, error) -> log.warn("Failed to populate MPLS rule {} for SID {}: {} in dev:{}", objective.id(), segmentId, error, targetSwId));
        ForwardingObjective fob = fwdObjBuilder.add(context);
        fwdObjs.add(fob);
    }
    return fwdObjs;
}