Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2017-present Open Networking Foundation |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.openstacknetworking.impl; |
| 17 | |
| 18 | import com.google.common.base.Strings; |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 19 | import com.google.common.collect.ImmutableList; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 20 | import com.google.common.collect.Lists; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 21 | import org.onlab.packet.DHCP; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 22 | import org.onlab.packet.Ethernet; |
| 23 | import org.onlab.packet.IPv4; |
| 24 | import org.onlab.packet.Ip4Address; |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 25 | import org.onlab.packet.IpAddress; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 26 | import org.onlab.packet.IpPrefix; |
| 27 | import org.onlab.packet.MacAddress; |
| 28 | import org.onlab.packet.TpPort; |
| 29 | import org.onlab.packet.UDP; |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 30 | import org.onlab.packet.dhcp.DhcpOption; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 31 | import org.onlab.util.Tools; |
| 32 | import org.onosproject.cfg.ComponentConfigService; |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 33 | import org.onosproject.cluster.ClusterService; |
| 34 | import org.onosproject.cluster.LeadershipService; |
| 35 | import org.onosproject.cluster.NodeId; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 36 | import org.onosproject.core.ApplicationId; |
| 37 | import org.onosproject.core.CoreService; |
| 38 | import org.onosproject.net.ConnectPoint; |
| 39 | import org.onosproject.net.flow.DefaultTrafficSelector; |
| 40 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 41 | import org.onosproject.net.flow.TrafficSelector; |
| 42 | import org.onosproject.net.flow.TrafficTreatment; |
| 43 | import org.onosproject.net.packet.DefaultOutboundPacket; |
| 44 | import org.onosproject.net.packet.PacketContext; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 45 | import org.onosproject.net.packet.PacketProcessor; |
| 46 | import org.onosproject.net.packet.PacketService; |
| 47 | import org.onosproject.openstacknetworking.api.Constants; |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 48 | import org.onosproject.openstacknetworking.api.OpenstackFlowRuleService; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 49 | import org.onosproject.openstacknetworking.api.OpenstackNetworkService; |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 50 | import org.onosproject.openstacknode.api.OpenstackNode; |
| 51 | import org.onosproject.openstacknode.api.OpenstackNodeEvent; |
| 52 | import org.onosproject.openstacknode.api.OpenstackNodeListener; |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 53 | import org.onosproject.openstacknode.api.OpenstackNodeService; |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 54 | import org.openstack4j.model.network.HostRoute; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 55 | import org.openstack4j.model.network.IP; |
Daniel Park | 468e785 | 2018-07-28 00:38:45 +0900 | [diff] [blame] | 56 | import org.openstack4j.model.network.Network; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 57 | import org.openstack4j.model.network.Port; |
| 58 | import org.openstack4j.model.network.Subnet; |
Jian Li | c55a74f | 2020-05-11 13:05:47 +0900 | [diff] [blame] | 59 | import org.openstack4j.openstack.networking.domain.NeutronPort; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 60 | import org.osgi.service.component.ComponentContext; |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 61 | import org.osgi.service.component.annotations.Activate; |
| 62 | import org.osgi.service.component.annotations.Component; |
| 63 | import org.osgi.service.component.annotations.Deactivate; |
| 64 | import org.osgi.service.component.annotations.Modified; |
| 65 | import org.osgi.service.component.annotations.Reference; |
| 66 | import org.osgi.service.component.annotations.ReferenceCardinality; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 67 | import org.slf4j.Logger; |
| 68 | |
| 69 | import java.nio.ByteBuffer; |
| 70 | import java.util.Dictionary; |
| 71 | import java.util.List; |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 72 | import java.util.Objects; |
Jian Li | 32b0362 | 2018-11-06 17:54:24 +0900 | [diff] [blame] | 73 | import java.util.concurrent.ExecutorService; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 74 | |
Daniel Park | f8e422d | 2018-07-30 14:14:37 +0900 | [diff] [blame] | 75 | import static com.google.common.base.Preconditions.checkNotNull; |
Jian Li | 32b0362 | 2018-11-06 17:54:24 +0900 | [diff] [blame] | 76 | import static java.util.concurrent.Executors.newSingleThreadExecutor; |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 77 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_BroadcastAddress; |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 78 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_Classless_Static_Route; |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 79 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_DHCPServerIp; |
| 80 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_DomainServer; |
| 81 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_END; |
| 82 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_LeaseTime; |
| 83 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_MessageType; |
Jian Li | c55a74f | 2020-05-11 13:05:47 +0900 | [diff] [blame] | 84 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_RequestedParameters; |
Daniel Park | 48f1033 | 2018-08-02 10:57:27 +0900 | [diff] [blame] | 85 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_RouterAddress; |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 86 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_SubnetMask; |
Yi Tseng | c7403c2 | 2017-06-19 16:23:22 -0700 | [diff] [blame] | 87 | import static org.onlab.packet.DHCP.MsgType.DHCPACK; |
| 88 | import static org.onlab.packet.DHCP.MsgType.DHCPOFFER; |
Jian Li | 32b0362 | 2018-11-06 17:54:24 +0900 | [diff] [blame] | 89 | import static org.onlab.util.Tools.groupedThreads; |
Jian Li | c55a74f | 2020-05-11 13:05:47 +0900 | [diff] [blame] | 90 | import static org.onosproject.openstacknetworking.api.Constants.BAREMETAL; |
Jian Li | 5c09e21 | 2018-10-24 18:23:58 +0900 | [diff] [blame] | 91 | import static org.onosproject.openstacknetworking.api.Constants.DHCP_TABLE; |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 92 | import static org.onosproject.openstacknetworking.api.Constants.PRIORITY_DHCP_RULE; |
Ray Milkey | 8e40651 | 2018-10-24 15:56:50 -0700 | [diff] [blame] | 93 | import static org.onosproject.openstacknetworking.impl.OsgiPropertyConstants.DHCP_SERVER_MAC; |
| 94 | import static org.onosproject.openstacknetworking.impl.OsgiPropertyConstants.DHCP_SERVER_MAC_DEFAULT; |
Jian Li | f654dd1 | 2020-01-30 17:41:26 +0900 | [diff] [blame] | 95 | import static org.onosproject.openstacknetworking.util.OpenstackNetworkingUtil.getBroadcastAddr; |
Jian Li | c55a74f | 2020-05-11 13:05:47 +0900 | [diff] [blame] | 96 | import static org.onosproject.openstacknetworking.util.OpenstackNetworkingUtil.getDhcpFullBootFileName; |
| 97 | import static org.onosproject.openstacknetworking.util.OpenstackNetworkingUtil.getDhcpServerName; |
| 98 | import static org.onosproject.openstacknetworking.util.OpenstackNetworkingUtil.getDhcpStaticBootFileName; |
Jian Li | fb64d88 | 2018-11-27 10:57:40 +0900 | [diff] [blame] | 99 | import static org.onosproject.openstacknode.api.OpenstackNode.NodeType.COMPUTE; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 100 | import static org.slf4j.LoggerFactory.getLogger; |
| 101 | |
| 102 | /** |
| 103 | * Handles DHCP requests for the virtual instances. |
| 104 | */ |
Ray Milkey | 8e40651 | 2018-10-24 15:56:50 -0700 | [diff] [blame] | 105 | @Component( |
| 106 | immediate = true, |
| 107 | property = { |
| 108 | DHCP_SERVER_MAC + "=" + DHCP_SERVER_MAC_DEFAULT |
| 109 | } |
| 110 | ) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 111 | public class OpenstackSwitchingDhcpHandler { |
| 112 | protected final Logger log = getLogger(getClass()); |
| 113 | |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 114 | private static final Ip4Address DEFAULT_PRIMARY_DNS = Ip4Address.valueOf("8.8.8.8"); |
| 115 | private static final Ip4Address DEFAULT_SECONDARY_DNS = Ip4Address.valueOf("8.8.4.4"); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 116 | private static final byte PACKET_TTL = (byte) 127; |
| 117 | // TODO add MTU, static route option codes to ONOS DHCP and remove here |
| 118 | private static final byte DHCP_OPTION_MTU = (byte) 26; |
| 119 | private static final byte[] DHCP_DATA_LEASE_INFINITE = |
| 120 | ByteBuffer.allocate(4).putInt(-1).array(); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 121 | |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 122 | private static final int OCTET_BIT_LENGTH = 8; |
| 123 | private static final int V4_BYTE_SIZE = 4; |
Daniel Park | f8e422d | 2018-07-30 14:14:37 +0900 | [diff] [blame] | 124 | private static final int V4_CIDR_LOWER_BOUND = -1; |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 125 | private static final int V4_CIDR_UPPER_BOUND = 33; |
| 126 | private static final int PADDING_SIZE = 4; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 127 | |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 128 | private static final byte HARDWARE_ADDR_LENGTH = (byte) 6; |
| 129 | private static final byte DHCP_OPTION_DATA_LENGTH = (byte) 4; |
| 130 | private static final int DHCP_OPTION_DNS_LENGTH = 8; |
| 131 | private static final int DHCP_OPTION_MTU_LENGTH = 2; |
| 132 | |
Jian Li | c55a74f | 2020-05-11 13:05:47 +0900 | [diff] [blame] | 133 | private static final byte DHCP_OPTION_SERVER_NAME_CODE = (byte) 66; |
| 134 | private static final byte DHCP_OPTION_BOOT_FILE_NAME_CODE = (byte) 67; |
| 135 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 136 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 137 | protected CoreService coreService; |
| 138 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 139 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 140 | protected ComponentConfigService configService; |
| 141 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 142 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 143 | protected PacketService packetService; |
| 144 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 145 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 146 | protected OpenstackNetworkService osNetworkService; |
| 147 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 148 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 149 | protected OpenstackNodeService osNodeService; |
| 150 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 151 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 152 | protected OpenstackFlowRuleService osFlowRuleService; |
| 153 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 154 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 155 | protected ClusterService clusterService; |
| 156 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 157 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 158 | protected LeadershipService leadershipService; |
| 159 | |
Ray Milkey | 8e40651 | 2018-10-24 15:56:50 -0700 | [diff] [blame] | 160 | /** Fake MAC address for virtual network subnet gateway. */ |
| 161 | private String dhcpServerMac = DHCP_SERVER_MAC_DEFAULT; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 162 | |
| 163 | private final PacketProcessor packetProcessor = new InternalPacketProcessor(); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 164 | private final OpenstackNodeListener osNodeListener = new InternalNodeEventListener(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 165 | |
Jian Li | 32b0362 | 2018-11-06 17:54:24 +0900 | [diff] [blame] | 166 | private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| 167 | groupedThreads(this.getClass().getSimpleName(), "event-handler")); |
| 168 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 169 | private ApplicationId appId; |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 170 | private NodeId localNodeId; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 171 | |
| 172 | @Activate |
| 173 | protected void activate() { |
| 174 | appId = coreService.registerApplication(Constants.OPENSTACK_NETWORKING_APP_ID); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 175 | localNodeId = clusterService.getLocalNode().id(); |
| 176 | osNodeService.addListener(osNodeListener); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 177 | configService.registerProperties(getClass()); |
| 178 | packetService.addProcessor(packetProcessor, PacketProcessor.director(0)); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 179 | leadershipService.runForLeadership(appId.name()); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 180 | |
| 181 | log.info("Started"); |
| 182 | } |
| 183 | |
| 184 | @Deactivate |
| 185 | protected void deactivate() { |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 186 | packetService.removeProcessor(packetProcessor); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 187 | osNodeService.removeListener(osNodeListener); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 188 | configService.unregisterProperties(getClass(), false); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 189 | leadershipService.withdraw(appId.name()); |
Jian Li | 32b0362 | 2018-11-06 17:54:24 +0900 | [diff] [blame] | 190 | eventExecutor.shutdown(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 191 | |
| 192 | log.info("Stopped"); |
| 193 | } |
| 194 | |
| 195 | @Modified |
| 196 | protected void modified(ComponentContext context) { |
| 197 | Dictionary<?, ?> properties = context.getProperties(); |
| 198 | String updatedMac; |
| 199 | |
| 200 | updatedMac = Tools.get(properties, DHCP_SERVER_MAC); |
Jian Li | fb00549 | 2018-03-02 10:50:15 +0900 | [diff] [blame] | 201 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 202 | if (!Strings.isNullOrEmpty(updatedMac) && !updatedMac.equals(dhcpServerMac)) { |
| 203 | dhcpServerMac = updatedMac; |
| 204 | } |
| 205 | |
| 206 | log.info("Modified"); |
| 207 | } |
| 208 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 209 | private class InternalPacketProcessor implements PacketProcessor { |
| 210 | |
| 211 | @Override |
| 212 | public void process(PacketContext context) { |
| 213 | if (context.isHandled()) { |
| 214 | return; |
| 215 | } |
| 216 | |
| 217 | Ethernet ethPacket = context.inPacket().parsed(); |
| 218 | if (ethPacket == null || ethPacket.getEtherType() != Ethernet.TYPE_IPV4) { |
| 219 | return; |
| 220 | } |
| 221 | IPv4 ipv4Packet = (IPv4) ethPacket.getPayload(); |
| 222 | if (ipv4Packet.getProtocol() != IPv4.PROTOCOL_UDP) { |
| 223 | return; |
| 224 | } |
| 225 | UDP udpPacket = (UDP) ipv4Packet.getPayload(); |
| 226 | if (udpPacket.getDestinationPort() != UDP.DHCP_SERVER_PORT || |
| 227 | udpPacket.getSourcePort() != UDP.DHCP_CLIENT_PORT) { |
| 228 | return; |
| 229 | } |
| 230 | |
| 231 | DHCP dhcpPacket = (DHCP) udpPacket.getPayload(); |
Jian Li | 32b0362 | 2018-11-06 17:54:24 +0900 | [diff] [blame] | 232 | |
| 233 | eventExecutor.execute(() -> processDhcp(context, dhcpPacket)); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | private void processDhcp(PacketContext context, DHCP dhcpPacket) { |
| 237 | if (dhcpPacket == null) { |
| 238 | log.trace("DHCP packet without payload received, do nothing"); |
| 239 | return; |
| 240 | } |
| 241 | |
Yi Tseng | c7403c2 | 2017-06-19 16:23:22 -0700 | [diff] [blame] | 242 | DHCP.MsgType inPacketType = getPacketType(dhcpPacket); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 243 | if (inPacketType == null || dhcpPacket.getClientHardwareAddress() == null) { |
| 244 | log.trace("Malformed DHCP packet received, ignore it"); |
| 245 | return; |
| 246 | } |
| 247 | |
| 248 | MacAddress clientMac = MacAddress.valueOf(dhcpPacket.getClientHardwareAddress()); |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 249 | |
| 250 | Port port = osNetworkService.ports().stream() |
| 251 | .filter(p -> MacAddress.valueOf(p.getMacAddress()).equals(clientMac)) |
| 252 | .findAny().orElse(null); |
| 253 | |
| 254 | if (port == null) { |
| 255 | log.warn("Failed to retrieve openstack port information for MAC {}", clientMac); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 256 | return; |
| 257 | } |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 258 | |
| 259 | IP fixedIp = port.getFixedIps().stream().findFirst().orElse(null); |
| 260 | |
| 261 | if (fixedIp == null) { |
| 262 | log.warn("There is no IP addresses are assigned with the port {}", port.getId()); |
| 263 | return; |
| 264 | } |
| 265 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 266 | Ethernet ethPacket = context.inPacket().parsed(); |
| 267 | switch (inPacketType) { |
| 268 | case DHCPDISCOVER: |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 269 | processDhcpDiscover(context, clientMac, port, ethPacket); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 270 | break; |
| 271 | case DHCPREQUEST: |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 272 | processDhcpRequest(context, clientMac, port, ethPacket); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 273 | break; |
| 274 | case DHCPRELEASE: |
| 275 | log.trace("DHCP RELEASE received from {}", clientMac); |
| 276 | // do nothing |
| 277 | break; |
| 278 | default: |
| 279 | break; |
| 280 | } |
| 281 | } |
| 282 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 283 | private void processDhcpDiscover(PacketContext context, MacAddress clientMac, |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 284 | Port port, Ethernet ethPacket) { |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 285 | log.trace("DHCP DISCOVER received from {}", clientMac); |
| 286 | Ethernet discoverReply = buildReply(ethPacket, |
| 287 | (byte) DHCPOFFER.getValue(), |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 288 | port); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 289 | sendReply(context, discoverReply); |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 290 | log.trace("DHCP OFFER({}) is sent for {}", |
| 291 | port.getFixedIps().stream().findFirst(), clientMac); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 292 | } |
| 293 | |
| 294 | private void processDhcpRequest(PacketContext context, MacAddress clientMac, |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 295 | Port port, Ethernet ethPacket) { |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 296 | log.trace("DHCP REQUEST received from {}", clientMac); |
| 297 | Ethernet requestReply = buildReply(ethPacket, |
| 298 | (byte) DHCPACK.getValue(), |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 299 | port); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 300 | sendReply(context, requestReply); |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 301 | log.trace("DHCP ACK({}) is sent for {}", |
| 302 | port.getFixedIps().stream().findFirst(), clientMac); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 303 | } |
| 304 | |
Yi Tseng | c7403c2 | 2017-06-19 16:23:22 -0700 | [diff] [blame] | 305 | private DHCP.MsgType getPacketType(DHCP dhcpPacket) { |
| 306 | DhcpOption optType = dhcpPacket.getOption(OptionCode_MessageType); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 307 | if (optType == null) { |
| 308 | log.trace("DHCP packet with no message type, ignore it"); |
| 309 | return null; |
| 310 | } |
| 311 | |
Yi Tseng | c7403c2 | 2017-06-19 16:23:22 -0700 | [diff] [blame] | 312 | DHCP.MsgType inPacketType = DHCP.MsgType.getType(optType.getData()[0]); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 313 | if (inPacketType == null) { |
| 314 | log.trace("DHCP packet with no packet type, ignore it"); |
| 315 | } |
| 316 | return inPacketType; |
| 317 | } |
| 318 | |
| 319 | private Ethernet buildReply(Ethernet ethRequest, byte packetType, |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 320 | Port port) { |
| 321 | log.trace("Build for DHCP reply msg for openstack port {}", port.toString()); |
| 322 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 323 | // pick one IP address to make a reply |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 324 | // since we check the validity of fixed IP address at parent method, |
| 325 | // so no need to double check the fixed IP existence here |
| 326 | IP fixedIp = port.getFixedIps().stream().findFirst().get(); |
| 327 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 328 | Subnet osSubnet = osNetworkService.subnet(fixedIp.getSubnetId()); |
| 329 | |
| 330 | Ethernet ethReply = new Ethernet(); |
| 331 | ethReply.setSourceMACAddress(dhcpServerMac); |
| 332 | ethReply.setDestinationMACAddress(ethRequest.getSourceMAC()); |
| 333 | ethReply.setEtherType(Ethernet.TYPE_IPV4); |
| 334 | |
| 335 | IPv4 ipv4Request = (IPv4) ethRequest.getPayload(); |
| 336 | IPv4 ipv4Reply = new IPv4(); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 337 | |
Jian Li | 5ecfd1a | 2018-12-10 11:41:03 +0900 | [diff] [blame] | 338 | ipv4Reply.setSourceAddress( |
| 339 | clusterService.getLocalNode().ip().getIp4Address().toString()); |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 340 | ipv4Reply.setDestinationAddress(fixedIp.getIpAddress()); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 341 | ipv4Reply.setTtl(PACKET_TTL); |
| 342 | |
| 343 | UDP udpRequest = (UDP) ipv4Request.getPayload(); |
| 344 | UDP udpReply = new UDP(); |
| 345 | udpReply.setSourcePort((byte) UDP.DHCP_SERVER_PORT); |
| 346 | udpReply.setDestinationPort((byte) UDP.DHCP_CLIENT_PORT); |
| 347 | |
| 348 | DHCP dhcpRequest = (DHCP) udpRequest.getPayload(); |
| 349 | DHCP dhcpReply = buildDhcpReply( |
| 350 | dhcpRequest, |
| 351 | packetType, |
Jian Li | 9275f9c | 2020-05-07 12:01:46 +0900 | [diff] [blame] | 352 | Ip4Address.valueOf(fixedIp.getIpAddress()), |
Jian Li | c55a74f | 2020-05-11 13:05:47 +0900 | [diff] [blame] | 353 | (NeutronPort) port, osSubnet); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 354 | |
| 355 | udpReply.setPayload(dhcpReply); |
| 356 | ipv4Reply.setPayload(udpReply); |
| 357 | ethReply.setPayload(ipv4Reply); |
| 358 | |
| 359 | return ethReply; |
| 360 | } |
| 361 | |
| 362 | private void sendReply(PacketContext context, Ethernet ethReply) { |
| 363 | if (ethReply == null) { |
| 364 | return; |
| 365 | } |
| 366 | ConnectPoint srcPoint = context.inPacket().receivedFrom(); |
| 367 | TrafficTreatment treatment = DefaultTrafficTreatment |
| 368 | .builder() |
| 369 | .setOutput(srcPoint.port()) |
| 370 | .build(); |
| 371 | |
| 372 | packetService.emit(new DefaultOutboundPacket( |
| 373 | srcPoint.deviceId(), |
| 374 | treatment, |
| 375 | ByteBuffer.wrap(ethReply.serialize()))); |
| 376 | context.block(); |
| 377 | } |
| 378 | |
| 379 | private DHCP buildDhcpReply(DHCP request, byte msgType, Ip4Address yourIp, |
Jian Li | c55a74f | 2020-05-11 13:05:47 +0900 | [diff] [blame] | 380 | NeutronPort port, Subnet osSubnet) { |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 381 | Ip4Address gatewayIp = clusterService.getLocalNode().ip().getIp4Address(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 382 | int subnetPrefixLen = IpPrefix.valueOf(osSubnet.getCidr()).prefixLength(); |
| 383 | |
| 384 | DHCP dhcpReply = new DHCP(); |
| 385 | dhcpReply.setOpCode(DHCP.OPCODE_REPLY); |
| 386 | dhcpReply.setHardwareType(DHCP.HWTYPE_ETHERNET); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 387 | dhcpReply.setHardwareAddressLength(HARDWARE_ADDR_LENGTH); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 388 | dhcpReply.setTransactionId(request.getTransactionId()); |
| 389 | dhcpReply.setFlags(request.getFlags()); |
| 390 | dhcpReply.setYourIPAddress(yourIp.toInt()); |
| 391 | dhcpReply.setServerIPAddress(gatewayIp.toInt()); |
| 392 | dhcpReply.setClientHardwareAddress(request.getClientHardwareAddress()); |
| 393 | |
Yi Tseng | c7403c2 | 2017-06-19 16:23:22 -0700 | [diff] [blame] | 394 | List<DhcpOption> options = Lists.newArrayList(); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 395 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 396 | // message type |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 397 | options.add(doMsgType(msgType)); |
| 398 | |
| 399 | // server identifier |
| 400 | options.add(doServerId(gatewayIp)); |
| 401 | |
| 402 | // lease time |
| 403 | options.add(doLeaseTime()); |
| 404 | |
| 405 | // subnet mask |
| 406 | options.add(doSubnetMask(subnetPrefixLen)); |
| 407 | |
| 408 | // broadcast address |
Jian Li | f654dd1 | 2020-01-30 17:41:26 +0900 | [diff] [blame] | 409 | options.add(doBroadcastAddr(yourIp, subnetPrefixLen)); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 410 | |
| 411 | // domain server |
| 412 | options.add(doDomainServer(osSubnet)); |
| 413 | |
| 414 | // mtu |
| 415 | options.add(doMtu(osSubnet)); |
| 416 | |
| 417 | // classless static route |
| 418 | if (!osSubnet.getHostRoutes().isEmpty()) { |
| 419 | options.add(doClasslessSr(osSubnet)); |
| 420 | } |
| 421 | |
| 422 | // Sets the default router address up. |
| 423 | // Performs only if the gateway is set in subnet. |
| 424 | if (!Strings.isNullOrEmpty(osSubnet.getGateway())) { |
| 425 | options.add(doRouterAddr(osSubnet)); |
| 426 | } |
| 427 | |
Jian Li | c55a74f | 2020-05-11 13:05:47 +0900 | [diff] [blame] | 428 | // sets TFTP and bootfilename for PXE boot |
| 429 | if (BAREMETAL.equalsIgnoreCase(port.getvNicType())) { |
| 430 | options.add(doTftp(port)); |
| 431 | options.add(doBootfileName(request, port)); |
| 432 | } |
| 433 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 434 | // end option |
| 435 | options.add(doEnd()); |
| 436 | |
| 437 | dhcpReply.setOptions(options); |
| 438 | return dhcpReply; |
| 439 | } |
| 440 | |
| 441 | |
| 442 | private DhcpOption doMsgType(byte msgType) { |
Yi Tseng | c7403c2 | 2017-06-19 16:23:22 -0700 | [diff] [blame] | 443 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 444 | option.setCode(OptionCode_MessageType.getValue()); |
| 445 | option.setLength((byte) 1); |
| 446 | byte[] optionData = {msgType}; |
| 447 | option.setData(optionData); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 448 | return option; |
| 449 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 450 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 451 | private DhcpOption doServerId(IpAddress gatewayIp) { |
| 452 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 453 | option.setCode(OptionCode_DHCPServerIp.getValue()); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 454 | option.setLength(DHCP_OPTION_DATA_LENGTH); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 455 | option.setData(gatewayIp.toOctets()); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 456 | return option; |
| 457 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 458 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 459 | private DhcpOption doLeaseTime() { |
| 460 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 461 | option.setCode(OptionCode_LeaseTime.getValue()); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 462 | option.setLength(DHCP_OPTION_DATA_LENGTH); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 463 | option.setData(DHCP_DATA_LEASE_INFINITE); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 464 | return option; |
| 465 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 466 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 467 | private DhcpOption doSubnetMask(int subnetPrefixLen) { |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 468 | Ip4Address subnetMask = Ip4Address.makeMaskPrefix(subnetPrefixLen); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 469 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 470 | option.setCode(OptionCode_SubnetMask.getValue()); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 471 | option.setLength(DHCP_OPTION_DATA_LENGTH); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 472 | option.setData(subnetMask.toOctets()); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 473 | return option; |
| 474 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 475 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 476 | private DhcpOption doBroadcastAddr(Ip4Address yourIp, int subnetPrefixLen) { |
Jian Li | f654dd1 | 2020-01-30 17:41:26 +0900 | [diff] [blame] | 477 | String broadcast = getBroadcastAddr(yourIp.toString(), subnetPrefixLen); |
| 478 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 479 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 480 | option.setCode(OptionCode_BroadcastAddress.getValue()); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 481 | option.setLength(DHCP_OPTION_DATA_LENGTH); |
Jian Li | f654dd1 | 2020-01-30 17:41:26 +0900 | [diff] [blame] | 482 | option.setData(IpAddress.valueOf(broadcast).toOctets()); |
| 483 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 484 | return option; |
| 485 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 486 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 487 | private DhcpOption doDomainServer(Subnet osSubnet) { |
| 488 | DhcpOption option = new DhcpOption(); |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 489 | |
| 490 | List<String> dnsServers = osSubnet.getDnsNames(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 491 | option.setCode(OptionCode_DomainServer.getValue()); |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 492 | |
| 493 | if (dnsServers.isEmpty()) { |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 494 | option.setLength((byte) DHCP_OPTION_DNS_LENGTH); |
| 495 | ByteBuffer dnsByteBuf = ByteBuffer.allocate(DHCP_OPTION_DNS_LENGTH); |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 496 | dnsByteBuf.put(DEFAULT_PRIMARY_DNS.toOctets()); |
| 497 | dnsByteBuf.put(DEFAULT_SECONDARY_DNS.toOctets()); |
| 498 | |
| 499 | option.setData(dnsByteBuf.array()); |
| 500 | } else { |
| 501 | int dnsLength = 4 * dnsServers.size(); |
| 502 | |
| 503 | option.setLength((byte) dnsLength); |
| 504 | |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 505 | ByteBuffer dnsByteBuf = ByteBuffer.allocate(DHCP_OPTION_DNS_LENGTH); |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 506 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 507 | for (String dnsServer : dnsServers) { |
| 508 | dnsByteBuf.put(IpAddress.valueOf(dnsServer).toOctets()); |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 509 | } |
| 510 | option.setData(dnsByteBuf.array()); |
| 511 | } |
| 512 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 513 | return option; |
| 514 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 515 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 516 | private DhcpOption doMtu(Subnet osSubnet) { |
| 517 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 518 | option.setCode(DHCP_OPTION_MTU); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 519 | option.setLength((byte) DHCP_OPTION_MTU_LENGTH); |
Daniel Park | 468e785 | 2018-07-28 00:38:45 +0900 | [diff] [blame] | 520 | Network osNetwork = osNetworkService.network(osSubnet.getNetworkId()); |
| 521 | checkNotNull(osNetwork); |
| 522 | checkNotNull(osNetwork.getMTU()); |
| 523 | |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 524 | option.setData(ByteBuffer.allocate(DHCP_OPTION_MTU_LENGTH) |
| 525 | .putShort(osNetwork.getMTU().shortValue()).array()); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 526 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 527 | return option; |
| 528 | } |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 529 | |
Jian Li | c55a74f | 2020-05-11 13:05:47 +0900 | [diff] [blame] | 530 | private DhcpOption doTftp(NeutronPort port) { |
| 531 | String serverName = getDhcpServerName(port); |
| 532 | log.info("DHCP server name : {}", serverName); |
| 533 | |
| 534 | DhcpOption option = new DhcpOption(); |
| 535 | option.setCode(DHCP_OPTION_SERVER_NAME_CODE); |
| 536 | option.setLength((byte) serverName.length()); |
| 537 | option.setData(serverName.getBytes()); |
| 538 | |
| 539 | return option; |
| 540 | } |
| 541 | |
| 542 | private DhcpOption doBootfileName(DHCP request, NeutronPort port) { |
| 543 | String bootStaticFileName = getDhcpStaticBootFileName(port); |
| 544 | String bootFullFileName = getDhcpFullBootFileName(port); |
| 545 | |
| 546 | DhcpOption option = new DhcpOption(); |
| 547 | option.setCode(DHCP_OPTION_BOOT_FILE_NAME_CODE); |
| 548 | |
| 549 | DhcpOption requestOption = request.getOption(OptionCode_RequestedParameters); |
| 550 | if (requestOption.getLength() > 30) { |
| 551 | log.info("DHCP static boot file name {}", bootStaticFileName); |
| 552 | option.setLength((byte) bootStaticFileName.length()); |
| 553 | option.setData(bootStaticFileName.getBytes()); |
| 554 | } else { |
| 555 | log.info("DHCP full boot file path {}", bootFullFileName); |
| 556 | option.setLength((byte) bootFullFileName.length()); |
| 557 | option.setData(bootFullFileName.getBytes()); |
| 558 | } |
| 559 | |
| 560 | return option; |
| 561 | } |
| 562 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 563 | private DhcpOption doClasslessSr(Subnet osSubnet) { |
| 564 | DhcpOption option = new DhcpOption(); |
| 565 | option.setCode(OptionCode_Classless_Static_Route.getValue()); |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 566 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 567 | int hostRoutesSize = hostRoutesSize(ImmutableList.copyOf(osSubnet.getHostRoutes())); |
| 568 | if (hostRoutesSize == 0) { |
| 569 | throw new IllegalArgumentException("Illegal CIDR hostRoutesSize value!"); |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 570 | } |
| 571 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 572 | log.trace("hostRouteSize: {}", hostRoutesSize); |
Daniel Park | 48f1033 | 2018-08-02 10:57:27 +0900 | [diff] [blame] | 573 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 574 | option.setLength((byte) hostRoutesSize); |
| 575 | ByteBuffer hostRouteByteBuf = ByteBuffer.allocate(hostRoutesSize); |
| 576 | |
| 577 | osSubnet.getHostRoutes().forEach(h -> { |
| 578 | log.debug("processing host route information: {}", h.toString()); |
| 579 | |
| 580 | IpPrefix ipPrefix = IpPrefix.valueOf(h.getDestination()); |
| 581 | |
| 582 | hostRouteByteBuf.put(Objects.requireNonNull(bytesDestinationDescriptor(ipPrefix))); |
| 583 | |
| 584 | hostRouteByteBuf.put(Ip4Address.valueOf(h.getNexthop()).toOctets()); |
| 585 | }); |
| 586 | |
| 587 | option.setData(hostRouteByteBuf.array()); |
| 588 | return option; |
| 589 | } |
| 590 | |
| 591 | private DhcpOption doRouterAddr(Subnet osSubnet) { |
| 592 | DhcpOption option = new DhcpOption(); |
| 593 | option.setCode(OptionCode_RouterAddress.getValue()); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 594 | option.setLength(DHCP_OPTION_DATA_LENGTH); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 595 | option.setData(Ip4Address.valueOf(osSubnet.getGateway()).toOctets()); |
| 596 | return option; |
| 597 | } |
| 598 | |
| 599 | private DhcpOption doEnd() { |
| 600 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 601 | option.setCode(OptionCode_END.getValue()); |
| 602 | option.setLength((byte) 1); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 603 | return option; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 604 | } |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 605 | |
| 606 | private int hostRoutesSize(List<HostRoute> hostRoutes) { |
| 607 | int size = 0; |
| 608 | int preFixLen; |
| 609 | |
| 610 | for (HostRoute h : hostRoutes) { |
| 611 | preFixLen = IpPrefix.valueOf(h.getDestination()).prefixLength(); |
| 612 | if (Math.max(V4_CIDR_LOWER_BOUND, preFixLen) == V4_CIDR_LOWER_BOUND || |
| 613 | Math.min(preFixLen, V4_CIDR_UPPER_BOUND) == V4_CIDR_UPPER_BOUND) { |
| 614 | throw new IllegalArgumentException("Illegal CIDR length value!"); |
| 615 | } |
| 616 | |
Daniel Park | f8e422d | 2018-07-30 14:14:37 +0900 | [diff] [blame] | 617 | for (int i = 0; i <= V4_BYTE_SIZE; i++) { |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 618 | if (preFixLen == Math.min(preFixLen, i * OCTET_BIT_LENGTH)) { |
| 619 | size = size + i + 1 + PADDING_SIZE; |
| 620 | break; |
| 621 | } |
| 622 | } |
| 623 | } |
| 624 | return size; |
| 625 | } |
| 626 | |
| 627 | private byte[] bytesDestinationDescriptor(IpPrefix ipPrefix) { |
| 628 | ByteBuffer byteBuffer; |
| 629 | int prefixLen = ipPrefix.prefixLength(); |
| 630 | |
| 631 | // retrieve ipPrefix to the destination descriptor format |
| 632 | // ex) 10.1.1.0/24 -> [10,1,1,0] |
| 633 | String[] ipPrefixString = ipPrefix.getIp4Prefix().toString() |
| 634 | .split("/")[0] |
| 635 | .split("\\."); |
| 636 | |
Jian Li | 5ecfd1a | 2018-12-10 11:41:03 +0900 | [diff] [blame] | 637 | // retrieve destination descriptor and put this to byte buffer |
| 638 | // according to RFC 3442 |
Daniel Park | f8e422d | 2018-07-30 14:14:37 +0900 | [diff] [blame] | 639 | // ex) 0.0.0.0/0 -> 0 |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 640 | // ex) 10.0.0.0/8 -> 8.10 |
| 641 | // ex) 10.17.0.0/16 -> 16.10.17 |
| 642 | // ex) 10.27.129.0/24 -> 24.10.27.129 |
| 643 | // ex) 10.229.0.128/25 -> 25.10.229.0.128 |
Daniel Park | f8e422d | 2018-07-30 14:14:37 +0900 | [diff] [blame] | 644 | for (int i = 0; i <= V4_BYTE_SIZE; i++) { |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 645 | if (prefixLen == Math.min(prefixLen, i * OCTET_BIT_LENGTH)) { |
| 646 | byteBuffer = ByteBuffer.allocate(i + 1); |
| 647 | byteBuffer.put((byte) prefixLen); |
| 648 | |
| 649 | for (int j = 0; j < i; j++) { |
| 650 | byteBuffer.put((byte) Integer.parseInt(ipPrefixString[j])); |
| 651 | } |
| 652 | return byteBuffer.array(); |
| 653 | } |
| 654 | } |
| 655 | |
| 656 | return null; |
| 657 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 658 | } |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 659 | |
| 660 | private class InternalNodeEventListener implements OpenstackNodeListener { |
Jian Li | fb64d88 | 2018-11-27 10:57:40 +0900 | [diff] [blame] | 661 | @Override |
| 662 | public boolean isRelevant(OpenstackNodeEvent event) { |
| 663 | return event.subject().type() == COMPUTE; |
| 664 | } |
| 665 | |
Jian Li | 34220ea | 2018-11-14 01:30:24 +0900 | [diff] [blame] | 666 | private boolean isRelevantHelper() { |
| 667 | return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 668 | } |
| 669 | |
| 670 | @Override |
| 671 | public void event(OpenstackNodeEvent event) { |
| 672 | OpenstackNode osNode = event.subject(); |
| 673 | switch (event.type()) { |
| 674 | case OPENSTACK_NODE_COMPLETE: |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 675 | eventExecutor.execute(() -> processNodeCompletion(osNode)); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 676 | break; |
| 677 | case OPENSTACK_NODE_INCOMPLETE: |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 678 | case OPENSTACK_NODE_CREATED: |
| 679 | case OPENSTACK_NODE_UPDATED: |
| 680 | case OPENSTACK_NODE_REMOVED: |
| 681 | default: |
| 682 | break; |
| 683 | } |
| 684 | } |
| 685 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 686 | private void processNodeCompletion(OpenstackNode osNode) { |
| 687 | if (!isRelevantHelper()) { |
| 688 | return; |
| 689 | } |
| 690 | setDhcpRule(osNode, true); |
| 691 | } |
| 692 | |
| 693 | private void processNodeIncompletion(OpenstackNode osNode) { |
| 694 | if (!isRelevantHelper()) { |
| 695 | return; |
| 696 | } |
| 697 | setDhcpRule(osNode, false); |
| 698 | } |
| 699 | |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 700 | private void setDhcpRule(OpenstackNode openstackNode, boolean install) { |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 701 | TrafficSelector selector = DefaultTrafficSelector.builder() |
| 702 | .matchEthType(Ethernet.TYPE_IPV4) |
| 703 | .matchIPProtocol(IPv4.PROTOCOL_UDP) |
| 704 | .matchUdpDst(TpPort.tpPort(UDP.DHCP_SERVER_PORT)) |
| 705 | .matchUdpSrc(TpPort.tpPort(UDP.DHCP_CLIENT_PORT)) |
| 706 | .build(); |
| 707 | |
| 708 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| 709 | .punt() |
| 710 | .build(); |
| 711 | |
| 712 | osFlowRuleService.setRule( |
| 713 | appId, |
| 714 | openstackNode.intgBridge(), |
| 715 | selector, |
| 716 | treatment, |
| 717 | PRIORITY_DHCP_RULE, |
Jian Li | 5c09e21 | 2018-10-24 18:23:58 +0900 | [diff] [blame] | 718 | DHCP_TABLE, |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 719 | install); |
| 720 | } |
| 721 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 722 | } |