Examples with PrefixListBuilder org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.ipv6service.nd.packet.rev160620.router.advertisement.packet.PrefixListBuilder used on opensource projects

Example 1 with PrefixListBuilder

use of org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.ipv6service.nd.packet.rev160620.router.advertisement.packet.PrefixListBuilder in project netvirt by opendaylight.

the class Ipv6RouterAdvt method updateRAResponse.

private void updateRAResponse(Ipv6RtrAdvertType raType, RouterSolicitationPacket pdu, RouterAdvertisementPacketBuilder raPacket, VirtualPort routerPort) {
    short icmpv6RaFlags = 0;
    String gatewayMac = null;
    IpAddress gatewayIp;
    List<String> autoConfigPrefixList = new ArrayList<>();
    List<String> statefulConfigPrefixList = new ArrayList<>();
    for (VirtualSubnet subnet : routerPort.getSubnets()) {
        gatewayIp = subnet.getGatewayIp();
        // Skip if its a v4 subnet.
        if (gatewayIp.getIpv4Address() != null) {
            continue;
        }
        if (!subnet.getIpv6RAMode().isEmpty()) {
            if (Ipv6Constants.IPV6_AUTO_ADDRESS_SUBNETS.contains(subnet.getIpv6RAMode())) {
                autoConfigPrefixList.add(String.valueOf(subnet.getSubnetCidr().getValue()));
            }
            if (subnet.getIpv6RAMode().equalsIgnoreCase(Ipv6Constants.IPV6_DHCPV6_STATEFUL)) {
                statefulConfigPrefixList.add(String.valueOf(subnet.getSubnetCidr().getValue()));
            }
        }
        if (subnet.getIpv6RAMode().equalsIgnoreCase(Ipv6Constants.IPV6_DHCPV6_STATELESS)) {
            // Other Configuration.
            icmpv6RaFlags = (short) (icmpv6RaFlags | 1 << 6);
        } else if (subnet.getIpv6RAMode().equalsIgnoreCase(Ipv6Constants.IPV6_DHCPV6_STATEFUL)) {
            // Managed Address Conf.
            icmpv6RaFlags = (short) (icmpv6RaFlags | 1 << 7);
        }
    }
    gatewayMac = routerPort.getMacAddress();
    MacAddress sourceMac = MacAddress.getDefaultInstance(gatewayMac);
    raPacket.setSourceMac(sourceMac);
    if (raType == Ipv6RtrAdvertType.SOLICITED_ADVERTISEMENT) {
        raPacket.setDestinationMac(pdu.getSourceMac());
        raPacket.setDestinationIpv6(pdu.getSourceIpv6());
        raPacket.setFlowLabel(pdu.getFlowLabel());
    } else {
        raPacket.setDestinationMac(new MacAddress(Ipv6Constants.DEF_MCAST_MAC));
        raPacket.setDestinationIpv6(Ipv6ServiceUtils.ALL_NODES_MCAST_ADDR);
        raPacket.setFlowLabel(Ipv6Constants.DEF_FLOWLABEL);
    }
    raPacket.setEthertype(Ipv6Constants.IP_V6_ETHTYPE);
    raPacket.setVersion(Ipv6Constants.IPV6_VERSION);
    int prefixListLength = autoConfigPrefixList.size() + statefulConfigPrefixList.size();
    raPacket.setIpv6Length(Ipv6Constants.ICMPV6_RA_LENGTH_WO_OPTIONS + Ipv6Constants.ICMPV6_OPTION_SOURCE_LLA_LENGTH + prefixListLength * Ipv6Constants.ICMPV6_OPTION_PREFIX_LENGTH);
    raPacket.setNextHeader(Ipv6Constants.ICMP6_NHEADER);
    raPacket.setHopLimit(Ipv6Constants.ICMP_V6_MAX_HOP_LIMIT);
    raPacket.setSourceIpv6(Ipv6ServiceUtils.getIpv6LinkLocalAddressFromMac(sourceMac));
    raPacket.setIcmp6Type(Ipv6Constants.ICMP_V6_RA_CODE);
    raPacket.setIcmp6Code((short) 0);
    raPacket.setIcmp6Chksum(0);
    raPacket.setCurHopLimit((short) Ipv6Constants.IPV6_DEFAULT_HOP_LIMIT);
    raPacket.setFlags(icmpv6RaFlags);
    if (raType == Ipv6RtrAdvertType.CEASE_ADVERTISEMENT) {
        raPacket.setRouterLifetime(0);
    } else {
        raPacket.setRouterLifetime(Ipv6Constants.IPV6_ROUTER_LIFETIME);
    }
    raPacket.setReachableTime((long) Ipv6Constants.IPV6_RA_REACHABLE_TIME);
    raPacket.setRetransTime((long) 0);
    raPacket.setOptionSourceAddr((short) 1);
    raPacket.setSourceAddrLength((short) 1);
    raPacket.setSourceLlAddress(MacAddress.getDefaultInstance(gatewayMac));
    List<PrefixList> prefixList = new ArrayList<>();
    PrefixListBuilder prefix = new PrefixListBuilder();
    prefix.setOptionType((short) 3);
    prefix.setOptionLength((short) 4);
    // Note: EUI-64 auto-configuration requires 64 bits.
    prefix.setPrefixLength((short) 64);
    prefix.setValidLifetime((long) Ipv6Constants.IPV6_RA_VALID_LIFETIME);
    prefix.setPreferredLifetime((long) Ipv6Constants.IPV6_RA_PREFERRED_LIFETIME);
    prefix.setReserved((long) 0);
    short autoConfPrefixFlags = 0;
    // On-link flag
    autoConfPrefixFlags = (short) (autoConfPrefixFlags | 1 << 7);
    // Autonomous address-configuration flag.
    autoConfPrefixFlags = (short) (autoConfPrefixFlags | 1 << 6);
    for (String v6Prefix : autoConfigPrefixList) {
        prefix.setFlags(autoConfPrefixFlags);
        prefix.setPrefix(new Ipv6Prefix(v6Prefix));
        prefixList.add(prefix.build());
    }
    short statefulPrefixFlags = 0;
    // On-link flag
    statefulPrefixFlags = (short) (statefulPrefixFlags | 1 << 7);
    for (String v6Prefix : statefulConfigPrefixList) {
        prefix.setFlags(statefulPrefixFlags);
        prefix.setPrefix(new Ipv6Prefix(v6Prefix));
        prefixList.add(prefix.build());
    }
    raPacket.setPrefixList(prefixList);
    return;
}