Examples with DefaultGroupHandler org.onosproject.segmentrouting.grouphandler.DefaultGroupHandler used on opensource projects

Example 6 with DefaultGroupHandler

use of org.onosproject.segmentrouting.grouphandler.DefaultGroupHandler in project trellis-control by opennetworkinglab.

the class RoutingRulePopulator method populateIpRulesForRouter.

/**
 * Populates IP flow rules for a set of IP prefix in the target device.
 * The prefix are reachable via destination device(s).
 *
 * @param targetSw target device ID to set the rules
 * @param subnets the set of IP prefix
 * @param destSw1 destination switch where the prefixes are reachable
 * @param destSw2 paired destination switch if one exists for the subnets/prefixes.
 *                Should be null if there is no paired destination switch (by config)
 *                or if the given prefixes are reachable only via destSw1
 * @param nextHops map of destination switches and their next-hops.
 *                  Should only contain destination switches that are
 *                  actually meant to be routed to. If destSw2 is null, there
 *                  should not be an entry for destSw2 in this map.
 * @return true if all rules are set successfully, false otherwise
 */
private boolean populateIpRulesForRouter(DeviceId targetSw, Set<IpPrefix> subnets, DeviceId destSw1, DeviceId destSw2, Map<DeviceId, Set<DeviceId>> nextHops) {
    // pre-compute the needed information
    int segmentIdIPv41, segmentIdIPv42 = -1;
    int segmentIdIPv61, segmentIdIPv62 = -1;
    TrafficTreatment treatment = null;
    DestinationSet dsIPv4, dsIPv6;
    TrafficSelector metaIpv4Selector, metaIpv6Selector = null;
    int nextIdIPv4, nextIdIPv6, nextId;
    TrafficSelector selector;
    // start with MPLS SIDs
    try {
        segmentIdIPv41 = config.getIPv4SegmentId(destSw1);
        segmentIdIPv61 = config.getIPv6SegmentId(destSw1);
        if (destSw2 != null) {
            segmentIdIPv42 = config.getIPv4SegmentId(destSw2);
            segmentIdIPv62 = config.getIPv6SegmentId(destSw2);
        }
    } catch (DeviceConfigNotFoundException e) {
        log.warn(e.getMessage() + " Aborting populateIpRuleForRouter.");
        return false;
    }
    // build the IPv4 and IPv6 destination set
    if (destSw2 == null) {
        // single dst - create destination set based on next-hop
        // If the next hop is the same as the final destination, then MPLS
        // label is not set.
        Set<DeviceId> nhd1 = nextHops.get(destSw1);
        if (nhd1.size() == 1 && nhd1.iterator().next().equals(destSw1)) {
            dsIPv4 = DestinationSet.createTypePushNone(destSw1);
            dsIPv6 = DestinationSet.createTypePushNone(destSw1);
            treatment = DefaultTrafficTreatment.builder().immediate().decNwTtl().build();
        } else {
            dsIPv4 = DestinationSet.createTypePushBos(segmentIdIPv41, destSw1);
            dsIPv6 = DestinationSet.createTypePushBos(segmentIdIPv61, destSw1);
        }
    } else {
        // dst pair - IP rules for dst-pairs are always from other edge nodes
        // the destination set needs to have both destinations, even if there
        // are no next hops to one of them
        dsIPv4 = DestinationSet.createTypePushBos(segmentIdIPv41, destSw1, segmentIdIPv42, destSw2);
        dsIPv6 = DestinationSet.createTypePushBos(segmentIdIPv61, destSw1, segmentIdIPv62, destSw2);
    }
    // setup metadata to pass to nextObjective - indicate the vlan on egress
    // if needed by the switch pipeline. Since neighbor sets are always to
    // other neighboring routers, there is no subnet assigned on those ports.
    metaIpv4Selector = buildIpv4Selector().matchVlanId(srManager.getDefaultInternalVlan()).build();
    metaIpv6Selector = buildIpv6Selector().matchVlanId(srManager.getDefaultInternalVlan()).build();
    // get the group handler of the target switch
    DefaultGroupHandler grpHandler = srManager.getGroupHandler(targetSw);
    if (grpHandler == null) {
        log.warn("populateIPRuleForRouter: groupHandler for device {} " + "not found", targetSw);
        return false;
    }
    // get next id
    nextIdIPv4 = grpHandler.getNextObjectiveId(dsIPv4, nextHops, metaIpv4Selector, false);
    if (nextIdIPv4 <= 0) {
        log.warn("No next objective in {} for ds: {}", targetSw, dsIPv4);
        return false;
    }
    nextIdIPv6 = grpHandler.getNextObjectiveId(dsIPv6, nextHops, metaIpv6Selector, false);
    if (nextIdIPv6 <= 0) {
        log.warn("No next objective in {} for ds: {}", targetSw, dsIPv6);
        return false;
    }
    // build all the flow rules and send to the device
    for (IpPrefix subnet : subnets) {
        selector = buildIpSelectorFromIpPrefix(subnet).build();
        if (subnet.isIp4()) {
            nextId = nextIdIPv4;
        } else {
            nextId = nextIdIPv6;
        }
        ForwardingObjective.Builder fwdBuilder = DefaultForwardingObjective.builder().fromApp(srManager.appId).makePermanent().nextStep(nextId).withSelector(selector).withPriority(getPriorityFromPrefix(subnet)).withFlag(ForwardingObjective.Flag.SPECIFIC);
        if (treatment != null) {
            fwdBuilder.withTreatment(treatment);
        }
        log.debug("Installing {} forwarding objective for router IP/subnet {} " + "in switch {} with nextId: {}", subnet.isIp4() ? "IPv4" : "IPv6", subnet, targetSw, nextId);
        ObjectiveContext context = new DefaultObjectiveContext((objective) -> log.debug("IP rule for router {} populated in dev:{}", subnet, targetSw), (objective, error) -> log.warn("Failed to populate IP rule for router {}: {} in dev:{}", subnet, error, targetSw));
        srManager.flowObjectiveService.forward(targetSw, fwdBuilder.add(context));
    }
    rulePopulationCounter.addAndGet(subnets.size());
    return true;
}

Example 7 with DefaultGroupHandler

use of org.onosproject.segmentrouting.grouphandler.DefaultGroupHandler in project trellis-control by opennetworkinglab.

the class RoutingRulePopulator method revokeDoubleTaggedRoute.

/**
 * Revokes IP rules for a route that has double-tagged next hop.
 *
 * @param deviceId device ID of the device that next hop attaches to
 * @param prefix IP prefix of the route
 * @param hostMac MAC address of the next hop
 * @param innerVlan inner Vlan ID of the next hop
 * @param outerVlan outer Vlan ID of the next hop
 * @param outerTpid outer TPID of the next hop
 * @param outPort port where the next hop attaches to
 */
void revokeDoubleTaggedRoute(DeviceId deviceId, IpPrefix prefix, MacAddress hostMac, VlanId innerVlan, VlanId outerVlan, EthType outerTpid, PortNumber outPort) {
    ForwardingObjective.Builder fwdBuilder;
    log.debug("Revoking direct routing entry for double-tagged host route {} at {}:{}", prefix, deviceId, outPort);
    try {
        fwdBuilder = routingFwdObjBuilder(deviceId, prefix, hostMac, outerVlan, outPort, innerVlan, outerTpid, true, true);
    } catch (DeviceConfigNotFoundException e) {
        log.error(e.getMessage() + " Aborting revokeDoubleTaggedRoute");
        return;
    }
    if (fwdBuilder == null) {
        log.error("Aborting double-tagged host routing table entry due to error for dev:{} route:{}", deviceId, prefix);
        return;
    }
    int nextId = fwdBuilder.remove().nextId();
    DefaultObjectiveContext context = new DefaultObjectiveContext(objective -> {
        log.debug("Direct routing rule for double-tagged host route {} revoked. nextId={}", prefix, nextId);
        // Try to remove next objective as well
        ImmutablePair<TrafficTreatment, TrafficSelector> treatmentAndMeta;
        try {
            treatmentAndMeta = getTreatmentAndMeta(deviceId, hostMac, outerVlan, outPort, innerVlan, outerTpid);
        } catch (DeviceConfigNotFoundException e) {
            log.error(e.getMessage() + " Aborting revokeDoubleTaggedRoute");
            return;
        }
        if (treatmentAndMeta == null) {
            // Warning log will come from getTreatmentAndMeta method
            return;
        }
        DefaultGroupHandler groupHandler = srManager.getGroupHandler(deviceId);
        if (groupHandler == null) {
            log.warn("Failed to revoke direct routing rule for double-tagged host route {}: " + "group handler not found for {}", prefix, deviceId);
            return;
        }
        groupHandler.removeGroupFromPort(outPort, treatmentAndMeta.getLeft(), treatmentAndMeta.getRight());
    }, (objective, error) -> log.warn("Failed to revoke direct routing rule for double-tagged host route {}: {}", prefix, error));
    srManager.flowObjectiveService.forward(deviceId, fwdBuilder.remove(context));
}

Example 8 with DefaultGroupHandler

use of org.onosproject.segmentrouting.grouphandler.DefaultGroupHandler in project trellis-control by opennetworkinglab.

the class RoutingRulePopulator method updateFwdObj.

/**
 * Update Forwarding objective for each host and IP address connected to given port.
 * And create corresponding Simple Next objective if it does not exist.
 * Applied only when populating Forwarding objective
 * @param deviceId switch ID to set the rule
 * @param portNumber port number
 * @param prefix IP prefix of the route
 * @param hostMac MAC address of the next hop
 * @param vlanId Vlan ID of the port
 * @param popVlan true to pop vlan tag in TrafficTreatment
 * @param install true to populate the forwarding objective, false to revoke
 * @return a completable future that completes when the fwdobj completes. In case of removal,
 * the completable future completes when also the nextobj completes.
 */
CompletableFuture<Objective> updateFwdObj(DeviceId deviceId, PortNumber portNumber, IpPrefix prefix, MacAddress hostMac, VlanId vlanId, boolean popVlan, boolean install) {
    ForwardingObjective.Builder fob;
    TrafficSelector.Builder sbuilder = buildIpSelectorFromIpPrefix(prefix);
    MacAddress deviceMac;
    try {
        deviceMac = config.getDeviceMac(deviceId);
    } catch (DeviceConfigNotFoundException e) {
        log.warn(e.getMessage() + " Aborting updateFwdObj.");
        return CompletableFuture.completedFuture(null);
    }
    TrafficTreatment.Builder tbuilder = DefaultTrafficTreatment.builder();
    tbuilder.deferred().setEthDst(hostMac).setEthSrc(deviceMac).setOutput(portNumber);
    TrafficSelector.Builder mbuilder = DefaultTrafficSelector.builder();
    if (!popVlan) {
        mbuilder.matchVlanId(vlanId);
        tbuilder.setVlanId(vlanId);
    } else {
        mbuilder.matchVlanId(vlanId);
        tbuilder.popVlan();
    }
    // if the objective is to revoke an existing rule, and for some reason
    // the next-objective does not exist, then a new one should not be created
    int portNextObjId = srManager.getPortNextObjectiveId(deviceId, portNumber, tbuilder.build(), mbuilder.build(), install);
    CompletableFuture<Objective> future = new CompletableFuture<>();
    if (portNextObjId == -1) {
        // Warning log will come from getPortNextObjective method
        return CompletableFuture.completedFuture(null);
    }
    fob = DefaultForwardingObjective.builder().withSelector(sbuilder.build()).nextStep(portNextObjId).fromApp(srManager.appId).makePermanent().withPriority(getPriorityFromPrefix(prefix)).withFlag(ForwardingObjective.Flag.SPECIFIC);
    ObjectiveContext context = new DefaultObjectiveContext((objective) -> {
        log.debug("IP rule for route {} {}", prefix, install ? "installed" : "revoked");
        future.complete(objective);
    }, (objective, error) -> {
        log.warn("Failed to {} IP rule for route {}: {}", install ? "install" : "revoke", prefix, error);
        future.complete(null);
    });
    srManager.flowObjectiveService.forward(deviceId, install ? fob.add(context) : fob.remove(context));
    if (!install) {
        if (!srManager.getVlanPortMap(deviceId).containsKey(vlanId) || !srManager.getVlanPortMap(deviceId).get(vlanId).contains(portNumber)) {
            DefaultGroupHandler grpHandler = srManager.getGroupHandler(deviceId);
            if (grpHandler == null) {
                log.warn("updateFwdObj: groupHandler for device {} not found", deviceId);
            } else {
                // Before moving forward we have to be sure flow has been removed;
                try {
                    future.get();
                } catch (InterruptedException | ExecutionException e) {
                    log.warn("Exception caught when executing IP rule removal for route {}", prefix);
                }
                // Flow future has been already consumed (normally or exceptionally)
                return grpHandler.removeGroupFromPort(portNumber, tbuilder.build(), mbuilder.build());
            }
        }
    }
    return future;
}

Example 9 with DefaultGroupHandler

use of org.onosproject.segmentrouting.grouphandler.DefaultGroupHandler in project trellis-control by opennetworkinglab.

the class SegmentRoutingManager method processDeviceRemoved.

private void processDeviceRemoved(Device device) {
    dsNextObjStore.entrySet().stream().filter(entry -> entry.getKey().deviceId().equals(device.id())).forEach(entry -> dsNextObjStore.remove(entry.getKey()));
    vlanNextObjStore.entrySet().stream().filter(entry -> entry.getKey().deviceId().equals(device.id())).forEach(entry -> vlanNextObjStore.remove(entry.getKey()));
    macVlanNextObjStore.entrySet().stream().filter(entry -> entry.getKey().deviceId().equals(device.id())).forEach(entry -> macVlanNextObjStore.remove(entry.getKey()));
    portNextObjStore.entrySet().stream().filter(entry -> entry.getKey().deviceId().equals(device.id())).forEach(entry -> portNextObjStore.remove(entry.getKey()));
    linkHandler.processDeviceRemoved(device);
    DefaultGroupHandler gh = groupHandlerMap.remove(device.id());
    if (gh != null) {
        gh.shutdown();
    }
    // Note that a switch going down is associated with all of its links
    // going down as well, but it is treated as a single switch down event
    // while the link-downs are ignored. We cannot rely on the ordering of
    // events - i.e we cannot expect all link-downs to come before the
    // switch down - so we purge all seen-links for the switch before
    // handling route-path changes for the switch-down
    defaultRoutingHandler.populateRoutingRulesForLinkStatusChange(null, null, device.id(), true);
    defaultRoutingHandler.purgeEcmpGraph(device.id());
    // Removes routes having as target the device down
    defaultRoutingHandler.purgeSeenBeforeRoutes(device.id());
    // Cleanup all internal groupHandler stores for this device. Should be
    // done after all rerouting or rehashing has been completed
    groupHandlerMap.entrySet().forEach(entry -> entry.getValue().cleanUpForNeighborDown(device.id()));
    phasedRecoveryService.reset(device.id());
    // the purgeOnDisconnection device property.
    if (deviceConfiguration.isConfigured(device.id())) {
        flowObjectiveService.purgeAll(device.id(), appId);
    }
}

Example 10 with DefaultGroupHandler

use of org.onosproject.segmentrouting.grouphandler.DefaultGroupHandler in project trellis-control by opennetworkinglab.

the class SegmentRoutingManager method processEdgePort.

private void processEdgePort(DeviceId deviceId, Port port, VlanId vlanId, boolean popVlan) {
    boolean portUp = port.isEnabled();
    if (portUp) {
        log.info("Device:EdgePort {}:{} is enabled in vlan: {}", deviceId, port.number(), vlanId);
        hostEventExecutor.execute(() -> hostHandler.processPortUp(new ConnectPoint(deviceId, port.number())));
    } else {
        log.info("Device:EdgePort {}:{} is disabled in vlan: {}", deviceId, port.number(), vlanId);
    }
    DefaultGroupHandler groupHandler = groupHandlerMap.get(deviceId);
    if (groupHandler != null) {
        groupHandler.processEdgePort(port.number(), vlanId, popVlan, portUp);
    } else {
        log.warn("Group handler not found for dev:{}. Not handling edge port" + " {} event for port:{}", deviceId, (portUp) ? "UP" : "DOWN", port.number());
    }
}