Examples with RtNetlink org.onosproject.routing.fpm.protocol.RtNetlink used on opensource projects

Example 1 with RtNetlink

use of org.onosproject.routing.fpm.protocol.RtNetlink in project onos by opennetworkinglab.

the class FpmManager method fpmMessage.

private void fpmMessage(FpmPeer peer, FpmHeader fpmMessage) {
    if (fpmMessage.type() == FpmHeader.FPM_TYPE_KEEPALIVE) {
        return;
    }
    Netlink netlink = fpmMessage.netlink();
    RtNetlink rtNetlink = netlink.rtNetlink();
    if (log.isTraceEnabled()) {
        log.trace("Received FPM message: {}", fpmMessage);
    }
    if (!(rtNetlink.protocol() == RtProtocol.ZEBRA || rtNetlink.protocol() == RtProtocol.UNSPEC)) {
        log.trace("Ignoring non-zebra route");
        return;
    }
    IpAddress dstAddress = null;
    IpAddress gateway = null;
    for (RouteAttribute attribute : rtNetlink.attributes()) {
        if (attribute.type() == RouteAttribute.RTA_DST) {
            RouteAttributeDst raDst = (RouteAttributeDst) attribute;
            dstAddress = raDst.dstAddress();
        } else if (attribute.type() == RouteAttribute.RTA_GATEWAY) {
            RouteAttributeGateway raGateway = (RouteAttributeGateway) attribute;
            gateway = raGateway.gateway();
        }
    }
    if (dstAddress == null) {
        log.error("Dst address missing!");
        return;
    }
    IpPrefix prefix = IpPrefix.valueOf(dstAddress, rtNetlink.dstLength());
    // Ignore routes that we sent.
    if (gateway != null && ((prefix.isIp4() && pdPushNextHopIPv4 != null && pdPushNextHopIPv4.contains(gateway.getIp4Address())) || (prefix.isIp6() && pdPushNextHopIPv6 != null && pdPushNextHopIPv6.contains(gateway.getIp6Address())))) {
        if (routeInDhcpStore(prefix) || routeInRipStore(prefix)) {
            return;
        }
    }
    List<Route> updates = new LinkedList<>();
    List<Route> withdraws = new LinkedList<>();
    Route route;
    switch(netlink.type()) {
        case RTM_NEWROUTE:
            if (gateway == null) {
                // We ignore interface routes with no gateway for now.
                return;
            }
            route = new Route(Route.Source.FPM, prefix, gateway, clusterService.getLocalNode().id());
            Route oldRoute = fpmRoutes.get(peer).put(prefix, route);
            if (oldRoute != null) {
                log.trace("Swapping {} with {}", oldRoute, route);
                withdraws.add(oldRoute);
            }
            updates.add(route);
            break;
        case RTM_DELROUTE:
            Route existing = fpmRoutes.get(peer).remove(prefix);
            if (existing == null) {
                log.warn("Got delete for non-existent prefix");
                return;
            }
            route = new Route(Route.Source.FPM, prefix, existing.nextHop(), clusterService.getLocalNode().id());
            withdraws.add(route);
            break;
        case RTM_GETROUTE:
        default:
            break;
    }
    updateRouteStore(updates, withdraws);
}

Example 2 with RtNetlink

use of org.onosproject.routing.fpm.protocol.RtNetlink in project onos by opennetworkinglab.

the class FpmManager method updateRoute.

private void updateRoute(IpAddress pdPushNextHop, boolean isAdd, IpPrefix prefix, Channel ch, int raLength, short addrFamily) {
    try {
        RouteAttributeDst raDst = RouteAttributeDst.builder().length(raLength).type(RouteAttribute.RTA_DST).dstAddress(prefix.address()).build();
        RouteAttributeGateway raGateway = RouteAttributeGateway.builder().length(raLength).type(RouteAttribute.RTA_GATEWAY).gateway(pdPushNextHop).build();
        // Build RtNetlink.
        RtNetlink rtNetlink = RtNetlink.builder().addressFamily(addrFamily).dstLength(prefix.prefixLength()).routeAttribute(raDst).routeAttribute(raGateway).build();
        // Build Netlink.
        int messageLength = raDst.length() + raGateway.length() + RtNetlink.RT_NETLINK_LENGTH + Netlink.NETLINK_HEADER_LENGTH;
        Netlink netLink = Netlink.builder().length(messageLength).type(isAdd ? NetlinkMessageType.RTM_NEWROUTE : NetlinkMessageType.RTM_DELROUTE).flags(Netlink.NETLINK_REQUEST | Netlink.NETLINK_CREATE).rtNetlink(rtNetlink).build();
        // Build FpmHeader.
        messageLength += FpmHeader.FPM_HEADER_LENGTH;
        FpmHeader fpmMessage = FpmHeader.builder().version(FpmHeader.FPM_VERSION_1).type(FpmHeader.FPM_TYPE_NETLINK).length(messageLength).netlink(netLink).build();
        // Encode message in a channel buffer and transmit.
        ch.write(fpmMessage.encode());
        log.debug("Fpm Message for updated route {}", fpmMessage.toString());
    } catch (RuntimeException e) {
        log.info("Route not sent over fpm connection.");
    }
}