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; |
| 48 | import org.onosproject.openstacknetworking.api.InstancePort; |
| 49 | import org.onosproject.openstacknetworking.api.InstancePortService; |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 50 | import org.onosproject.openstacknetworking.api.OpenstackFlowRuleService; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 51 | import org.onosproject.openstacknetworking.api.OpenstackNetworkService; |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 52 | import org.onosproject.openstacknode.api.OpenstackNode; |
| 53 | import org.onosproject.openstacknode.api.OpenstackNodeEvent; |
| 54 | import org.onosproject.openstacknode.api.OpenstackNodeListener; |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 55 | import org.onosproject.openstacknode.api.OpenstackNodeService; |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 56 | import org.openstack4j.model.network.HostRoute; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 57 | import org.openstack4j.model.network.IP; |
Daniel Park | 468e785 | 2018-07-28 00:38:45 +0900 | [diff] [blame] | 58 | import org.openstack4j.model.network.Network; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 59 | import org.openstack4j.model.network.Port; |
| 60 | import org.openstack4j.model.network.Subnet; |
| 61 | import org.osgi.service.component.ComponentContext; |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 62 | import org.osgi.service.component.annotations.Activate; |
| 63 | import org.osgi.service.component.annotations.Component; |
| 64 | import org.osgi.service.component.annotations.Deactivate; |
| 65 | import org.osgi.service.component.annotations.Modified; |
| 66 | import org.osgi.service.component.annotations.Reference; |
| 67 | import org.osgi.service.component.annotations.ReferenceCardinality; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 68 | import org.slf4j.Logger; |
| 69 | |
| 70 | import java.nio.ByteBuffer; |
| 71 | import java.util.Dictionary; |
| 72 | import java.util.List; |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 73 | import java.util.Objects; |
Jian Li | 32b0362 | 2018-11-06 17:54:24 +0900 | [diff] [blame] | 74 | import java.util.concurrent.ExecutorService; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 75 | |
Daniel Park | f8e422d | 2018-07-30 14:14:37 +0900 | [diff] [blame] | 76 | import static com.google.common.base.Preconditions.checkNotNull; |
Jian Li | 32b0362 | 2018-11-06 17:54:24 +0900 | [diff] [blame] | 77 | import static java.util.concurrent.Executors.newSingleThreadExecutor; |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 78 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_BroadcastAddress; |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 79 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_Classless_Static_Route; |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 80 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_DHCPServerIp; |
| 81 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_DomainServer; |
| 82 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_END; |
| 83 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_LeaseTime; |
| 84 | import static org.onlab.packet.DHCP.DHCPOptionCode.OptionCode_MessageType; |
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 | 5c09e21 | 2018-10-24 18:23:58 +0900 | [diff] [blame] | 90 | import static org.onosproject.openstacknetworking.api.Constants.DHCP_TABLE; |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 91 | import static org.onosproject.openstacknetworking.api.Constants.PRIORITY_DHCP_RULE; |
Ray Milkey | 8e40651 | 2018-10-24 15:56:50 -0700 | [diff] [blame] | 92 | import static org.onosproject.openstacknetworking.impl.OsgiPropertyConstants.DHCP_SERVER_MAC; |
| 93 | import static org.onosproject.openstacknetworking.impl.OsgiPropertyConstants.DHCP_SERVER_MAC_DEFAULT; |
Jian Li | f654dd1 | 2020-01-30 17:41:26 +0900 | [diff] [blame] | 94 | import static org.onosproject.openstacknetworking.util.OpenstackNetworkingUtil.getBroadcastAddr; |
Jian Li | fb64d88 | 2018-11-27 10:57:40 +0900 | [diff] [blame] | 95 | import static org.onosproject.openstacknode.api.OpenstackNode.NodeType.COMPUTE; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 96 | import static org.slf4j.LoggerFactory.getLogger; |
| 97 | |
| 98 | /** |
| 99 | * Handles DHCP requests for the virtual instances. |
| 100 | */ |
Ray Milkey | 8e40651 | 2018-10-24 15:56:50 -0700 | [diff] [blame] | 101 | @Component( |
| 102 | immediate = true, |
| 103 | property = { |
| 104 | DHCP_SERVER_MAC + "=" + DHCP_SERVER_MAC_DEFAULT |
| 105 | } |
| 106 | ) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 107 | public class OpenstackSwitchingDhcpHandler { |
| 108 | protected final Logger log = getLogger(getClass()); |
| 109 | |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 110 | private static final Ip4Address DEFAULT_PRIMARY_DNS = Ip4Address.valueOf("8.8.8.8"); |
| 111 | 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] | 112 | private static final byte PACKET_TTL = (byte) 127; |
| 113 | // TODO add MTU, static route option codes to ONOS DHCP and remove here |
| 114 | private static final byte DHCP_OPTION_MTU = (byte) 26; |
| 115 | private static final byte[] DHCP_DATA_LEASE_INFINITE = |
| 116 | ByteBuffer.allocate(4).putInt(-1).array(); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 117 | |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 118 | private static final int OCTET_BIT_LENGTH = 8; |
| 119 | private static final int V4_BYTE_SIZE = 4; |
Daniel Park | f8e422d | 2018-07-30 14:14:37 +0900 | [diff] [blame] | 120 | private static final int V4_CIDR_LOWER_BOUND = -1; |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 121 | private static final int V4_CIDR_UPPER_BOUND = 33; |
| 122 | private static final int PADDING_SIZE = 4; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 123 | |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 124 | private static final byte HARDWARE_ADDR_LENGTH = (byte) 6; |
| 125 | private static final byte DHCP_OPTION_DATA_LENGTH = (byte) 4; |
| 126 | private static final int DHCP_OPTION_DNS_LENGTH = 8; |
| 127 | private static final int DHCP_OPTION_MTU_LENGTH = 2; |
| 128 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 129 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 130 | protected CoreService coreService; |
| 131 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 132 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 133 | protected ComponentConfigService configService; |
| 134 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 135 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 136 | protected PacketService packetService; |
| 137 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 138 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 139 | protected InstancePortService instancePortService; |
| 140 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 141 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 142 | protected OpenstackNetworkService osNetworkService; |
| 143 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 144 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 145 | protected OpenstackNodeService osNodeService; |
| 146 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 147 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
daniel park | 796c2eb | 2018-03-22 17:01:51 +0900 | [diff] [blame] | 148 | protected OpenstackFlowRuleService osFlowRuleService; |
| 149 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 150 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 151 | protected ClusterService clusterService; |
| 152 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 153 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 154 | protected LeadershipService leadershipService; |
| 155 | |
Ray Milkey | 8e40651 | 2018-10-24 15:56:50 -0700 | [diff] [blame] | 156 | /** Fake MAC address for virtual network subnet gateway. */ |
| 157 | private String dhcpServerMac = DHCP_SERVER_MAC_DEFAULT; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 158 | |
| 159 | private final PacketProcessor packetProcessor = new InternalPacketProcessor(); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 160 | private final OpenstackNodeListener osNodeListener = new InternalNodeEventListener(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 161 | |
Jian Li | 32b0362 | 2018-11-06 17:54:24 +0900 | [diff] [blame] | 162 | private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| 163 | groupedThreads(this.getClass().getSimpleName(), "event-handler")); |
| 164 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 165 | private ApplicationId appId; |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 166 | private NodeId localNodeId; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 167 | |
| 168 | @Activate |
| 169 | protected void activate() { |
| 170 | appId = coreService.registerApplication(Constants.OPENSTACK_NETWORKING_APP_ID); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 171 | localNodeId = clusterService.getLocalNode().id(); |
| 172 | osNodeService.addListener(osNodeListener); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 173 | configService.registerProperties(getClass()); |
| 174 | packetService.addProcessor(packetProcessor, PacketProcessor.director(0)); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 175 | leadershipService.runForLeadership(appId.name()); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 176 | |
| 177 | log.info("Started"); |
| 178 | } |
| 179 | |
| 180 | @Deactivate |
| 181 | protected void deactivate() { |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 182 | packetService.removeProcessor(packetProcessor); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 183 | osNodeService.removeListener(osNodeListener); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 184 | configService.unregisterProperties(getClass(), false); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 185 | leadershipService.withdraw(appId.name()); |
Jian Li | 32b0362 | 2018-11-06 17:54:24 +0900 | [diff] [blame] | 186 | eventExecutor.shutdown(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 187 | |
| 188 | log.info("Stopped"); |
| 189 | } |
| 190 | |
| 191 | @Modified |
| 192 | protected void modified(ComponentContext context) { |
| 193 | Dictionary<?, ?> properties = context.getProperties(); |
| 194 | String updatedMac; |
| 195 | |
| 196 | updatedMac = Tools.get(properties, DHCP_SERVER_MAC); |
Jian Li | fb00549 | 2018-03-02 10:50:15 +0900 | [diff] [blame] | 197 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 198 | if (!Strings.isNullOrEmpty(updatedMac) && !updatedMac.equals(dhcpServerMac)) { |
| 199 | dhcpServerMac = updatedMac; |
| 200 | } |
| 201 | |
| 202 | log.info("Modified"); |
| 203 | } |
| 204 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 205 | private class InternalPacketProcessor implements PacketProcessor { |
| 206 | |
| 207 | @Override |
| 208 | public void process(PacketContext context) { |
| 209 | if (context.isHandled()) { |
| 210 | return; |
| 211 | } |
| 212 | |
| 213 | Ethernet ethPacket = context.inPacket().parsed(); |
| 214 | if (ethPacket == null || ethPacket.getEtherType() != Ethernet.TYPE_IPV4) { |
| 215 | return; |
| 216 | } |
| 217 | IPv4 ipv4Packet = (IPv4) ethPacket.getPayload(); |
| 218 | if (ipv4Packet.getProtocol() != IPv4.PROTOCOL_UDP) { |
| 219 | return; |
| 220 | } |
| 221 | UDP udpPacket = (UDP) ipv4Packet.getPayload(); |
| 222 | if (udpPacket.getDestinationPort() != UDP.DHCP_SERVER_PORT || |
| 223 | udpPacket.getSourcePort() != UDP.DHCP_CLIENT_PORT) { |
| 224 | return; |
| 225 | } |
| 226 | |
| 227 | DHCP dhcpPacket = (DHCP) udpPacket.getPayload(); |
Jian Li | 32b0362 | 2018-11-06 17:54:24 +0900 | [diff] [blame] | 228 | |
| 229 | eventExecutor.execute(() -> processDhcp(context, dhcpPacket)); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | private void processDhcp(PacketContext context, DHCP dhcpPacket) { |
| 233 | if (dhcpPacket == null) { |
| 234 | log.trace("DHCP packet without payload received, do nothing"); |
| 235 | return; |
| 236 | } |
| 237 | |
Yi Tseng | c7403c2 | 2017-06-19 16:23:22 -0700 | [diff] [blame] | 238 | DHCP.MsgType inPacketType = getPacketType(dhcpPacket); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 239 | if (inPacketType == null || dhcpPacket.getClientHardwareAddress() == null) { |
| 240 | log.trace("Malformed DHCP packet received, ignore it"); |
| 241 | return; |
| 242 | } |
| 243 | |
| 244 | MacAddress clientMac = MacAddress.valueOf(dhcpPacket.getClientHardwareAddress()); |
| 245 | InstancePort reqInstPort = instancePortService.instancePort(clientMac); |
| 246 | if (reqInstPort == null) { |
| 247 | log.trace("Failed to find host(MAC:{})", clientMac); |
| 248 | return; |
| 249 | } |
| 250 | Ethernet ethPacket = context.inPacket().parsed(); |
| 251 | switch (inPacketType) { |
| 252 | case DHCPDISCOVER: |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 253 | processDhcpDiscover(context, clientMac, reqInstPort, ethPacket); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 254 | break; |
| 255 | case DHCPREQUEST: |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 256 | processDhcpRequest(context, clientMac, reqInstPort, ethPacket); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 257 | break; |
| 258 | case DHCPRELEASE: |
| 259 | log.trace("DHCP RELEASE received from {}", clientMac); |
| 260 | // do nothing |
| 261 | break; |
| 262 | default: |
| 263 | break; |
| 264 | } |
| 265 | } |
| 266 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 267 | private void processDhcpDiscover(PacketContext context, MacAddress clientMac, |
| 268 | InstancePort instPort, Ethernet ethPacket) { |
| 269 | log.trace("DHCP DISCOVER received from {}", clientMac); |
| 270 | Ethernet discoverReply = buildReply(ethPacket, |
| 271 | (byte) DHCPOFFER.getValue(), |
| 272 | instPort); |
| 273 | sendReply(context, discoverReply); |
| 274 | log.trace("DHCP OFFER({}) is sent for {}", instPort.ipAddress(), clientMac); |
| 275 | } |
| 276 | |
| 277 | private void processDhcpRequest(PacketContext context, MacAddress clientMac, |
| 278 | InstancePort instPort, Ethernet ethPacket) { |
| 279 | log.trace("DHCP REQUEST received from {}", clientMac); |
| 280 | Ethernet requestReply = buildReply(ethPacket, |
| 281 | (byte) DHCPACK.getValue(), |
| 282 | instPort); |
| 283 | sendReply(context, requestReply); |
| 284 | log.trace("DHCP ACK({}) is sent for {}", instPort.ipAddress(), clientMac); |
| 285 | } |
| 286 | |
Yi Tseng | c7403c2 | 2017-06-19 16:23:22 -0700 | [diff] [blame] | 287 | private DHCP.MsgType getPacketType(DHCP dhcpPacket) { |
| 288 | DhcpOption optType = dhcpPacket.getOption(OptionCode_MessageType); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 289 | if (optType == null) { |
| 290 | log.trace("DHCP packet with no message type, ignore it"); |
| 291 | return null; |
| 292 | } |
| 293 | |
Yi Tseng | c7403c2 | 2017-06-19 16:23:22 -0700 | [diff] [blame] | 294 | DHCP.MsgType inPacketType = DHCP.MsgType.getType(optType.getData()[0]); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 295 | if (inPacketType == null) { |
| 296 | log.trace("DHCP packet with no packet type, ignore it"); |
| 297 | } |
| 298 | return inPacketType; |
| 299 | } |
| 300 | |
| 301 | private Ethernet buildReply(Ethernet ethRequest, byte packetType, |
| 302 | InstancePort reqInstPort) { |
Daniel Park | e0945c1 | 2018-08-28 17:22:25 +0900 | [diff] [blame] | 303 | log.trace("Build for DHCP reply msg for instance port {}", reqInstPort.toString()); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 304 | Port osPort = osNetworkService.port(reqInstPort.portId()); |
Daniel Park | e0945c1 | 2018-08-28 17:22:25 +0900 | [diff] [blame] | 305 | if (osPort == null) { |
| 306 | log.error("Failed to retrieve openstack port information for instance port {}", |
| 307 | reqInstPort.toString()); |
Ray Milkey | 9281593 | 2018-08-28 10:32:17 -0700 | [diff] [blame] | 308 | return null; |
Daniel Park | e0945c1 | 2018-08-28 17:22:25 +0900 | [diff] [blame] | 309 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 310 | // pick one IP address to make a reply |
| 311 | IP fixedIp = osPort.getFixedIps().stream().findFirst().get(); |
| 312 | Subnet osSubnet = osNetworkService.subnet(fixedIp.getSubnetId()); |
| 313 | |
| 314 | Ethernet ethReply = new Ethernet(); |
| 315 | ethReply.setSourceMACAddress(dhcpServerMac); |
| 316 | ethReply.setDestinationMACAddress(ethRequest.getSourceMAC()); |
| 317 | ethReply.setEtherType(Ethernet.TYPE_IPV4); |
| 318 | |
| 319 | IPv4 ipv4Request = (IPv4) ethRequest.getPayload(); |
| 320 | IPv4 ipv4Reply = new IPv4(); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 321 | |
Jian Li | 5ecfd1a | 2018-12-10 11:41:03 +0900 | [diff] [blame] | 322 | ipv4Reply.setSourceAddress( |
| 323 | clusterService.getLocalNode().ip().getIp4Address().toString()); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 324 | ipv4Reply.setDestinationAddress(reqInstPort.ipAddress().getIp4Address().toInt()); |
| 325 | ipv4Reply.setTtl(PACKET_TTL); |
| 326 | |
| 327 | UDP udpRequest = (UDP) ipv4Request.getPayload(); |
| 328 | UDP udpReply = new UDP(); |
| 329 | udpReply.setSourcePort((byte) UDP.DHCP_SERVER_PORT); |
| 330 | udpReply.setDestinationPort((byte) UDP.DHCP_CLIENT_PORT); |
| 331 | |
| 332 | DHCP dhcpRequest = (DHCP) udpRequest.getPayload(); |
| 333 | DHCP dhcpReply = buildDhcpReply( |
| 334 | dhcpRequest, |
| 335 | packetType, |
| 336 | reqInstPort.ipAddress().getIp4Address(), |
| 337 | osSubnet); |
| 338 | |
| 339 | udpReply.setPayload(dhcpReply); |
| 340 | ipv4Reply.setPayload(udpReply); |
| 341 | ethReply.setPayload(ipv4Reply); |
| 342 | |
| 343 | return ethReply; |
| 344 | } |
| 345 | |
| 346 | private void sendReply(PacketContext context, Ethernet ethReply) { |
| 347 | if (ethReply == null) { |
| 348 | return; |
| 349 | } |
| 350 | ConnectPoint srcPoint = context.inPacket().receivedFrom(); |
| 351 | TrafficTreatment treatment = DefaultTrafficTreatment |
| 352 | .builder() |
| 353 | .setOutput(srcPoint.port()) |
| 354 | .build(); |
| 355 | |
| 356 | packetService.emit(new DefaultOutboundPacket( |
| 357 | srcPoint.deviceId(), |
| 358 | treatment, |
| 359 | ByteBuffer.wrap(ethReply.serialize()))); |
| 360 | context.block(); |
| 361 | } |
| 362 | |
| 363 | private DHCP buildDhcpReply(DHCP request, byte msgType, Ip4Address yourIp, |
| 364 | Subnet osSubnet) { |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 365 | Ip4Address gatewayIp = clusterService.getLocalNode().ip().getIp4Address(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 366 | int subnetPrefixLen = IpPrefix.valueOf(osSubnet.getCidr()).prefixLength(); |
| 367 | |
| 368 | DHCP dhcpReply = new DHCP(); |
| 369 | dhcpReply.setOpCode(DHCP.OPCODE_REPLY); |
| 370 | dhcpReply.setHardwareType(DHCP.HWTYPE_ETHERNET); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 371 | dhcpReply.setHardwareAddressLength(HARDWARE_ADDR_LENGTH); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 372 | dhcpReply.setTransactionId(request.getTransactionId()); |
| 373 | dhcpReply.setFlags(request.getFlags()); |
| 374 | dhcpReply.setYourIPAddress(yourIp.toInt()); |
| 375 | dhcpReply.setServerIPAddress(gatewayIp.toInt()); |
| 376 | dhcpReply.setClientHardwareAddress(request.getClientHardwareAddress()); |
| 377 | |
Yi Tseng | c7403c2 | 2017-06-19 16:23:22 -0700 | [diff] [blame] | 378 | List<DhcpOption> options = Lists.newArrayList(); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 379 | |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 380 | // message type |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 381 | options.add(doMsgType(msgType)); |
| 382 | |
| 383 | // server identifier |
| 384 | options.add(doServerId(gatewayIp)); |
| 385 | |
| 386 | // lease time |
| 387 | options.add(doLeaseTime()); |
| 388 | |
| 389 | // subnet mask |
| 390 | options.add(doSubnetMask(subnetPrefixLen)); |
| 391 | |
| 392 | // broadcast address |
Jian Li | f654dd1 | 2020-01-30 17:41:26 +0900 | [diff] [blame] | 393 | options.add(doBroadcastAddr(yourIp, subnetPrefixLen)); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 394 | |
| 395 | // domain server |
| 396 | options.add(doDomainServer(osSubnet)); |
| 397 | |
| 398 | // mtu |
| 399 | options.add(doMtu(osSubnet)); |
| 400 | |
| 401 | // classless static route |
| 402 | if (!osSubnet.getHostRoutes().isEmpty()) { |
| 403 | options.add(doClasslessSr(osSubnet)); |
| 404 | } |
| 405 | |
| 406 | // Sets the default router address up. |
| 407 | // Performs only if the gateway is set in subnet. |
| 408 | if (!Strings.isNullOrEmpty(osSubnet.getGateway())) { |
| 409 | options.add(doRouterAddr(osSubnet)); |
| 410 | } |
| 411 | |
| 412 | // end option |
| 413 | options.add(doEnd()); |
| 414 | |
| 415 | dhcpReply.setOptions(options); |
| 416 | return dhcpReply; |
| 417 | } |
| 418 | |
| 419 | |
| 420 | private DhcpOption doMsgType(byte msgType) { |
Yi Tseng | c7403c2 | 2017-06-19 16:23:22 -0700 | [diff] [blame] | 421 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 422 | option.setCode(OptionCode_MessageType.getValue()); |
| 423 | option.setLength((byte) 1); |
| 424 | byte[] optionData = {msgType}; |
| 425 | option.setData(optionData); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 426 | return option; |
| 427 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 428 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 429 | private DhcpOption doServerId(IpAddress gatewayIp) { |
| 430 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 431 | option.setCode(OptionCode_DHCPServerIp.getValue()); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 432 | option.setLength(DHCP_OPTION_DATA_LENGTH); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 433 | option.setData(gatewayIp.toOctets()); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 434 | return option; |
| 435 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 436 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 437 | private DhcpOption doLeaseTime() { |
| 438 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 439 | option.setCode(OptionCode_LeaseTime.getValue()); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 440 | option.setLength(DHCP_OPTION_DATA_LENGTH); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 441 | option.setData(DHCP_DATA_LEASE_INFINITE); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 442 | return option; |
| 443 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 444 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 445 | private DhcpOption doSubnetMask(int subnetPrefixLen) { |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 446 | Ip4Address subnetMask = Ip4Address.makeMaskPrefix(subnetPrefixLen); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 447 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 448 | option.setCode(OptionCode_SubnetMask.getValue()); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 449 | option.setLength(DHCP_OPTION_DATA_LENGTH); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 450 | option.setData(subnetMask.toOctets()); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 451 | return option; |
| 452 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 453 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 454 | private DhcpOption doBroadcastAddr(Ip4Address yourIp, int subnetPrefixLen) { |
Jian Li | f654dd1 | 2020-01-30 17:41:26 +0900 | [diff] [blame] | 455 | String broadcast = getBroadcastAddr(yourIp.toString(), subnetPrefixLen); |
| 456 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 457 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 458 | option.setCode(OptionCode_BroadcastAddress.getValue()); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 459 | option.setLength(DHCP_OPTION_DATA_LENGTH); |
Jian Li | f654dd1 | 2020-01-30 17:41:26 +0900 | [diff] [blame] | 460 | option.setData(IpAddress.valueOf(broadcast).toOctets()); |
| 461 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 462 | return option; |
| 463 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 464 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 465 | private DhcpOption doDomainServer(Subnet osSubnet) { |
| 466 | DhcpOption option = new DhcpOption(); |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 467 | |
| 468 | List<String> dnsServers = osSubnet.getDnsNames(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 469 | option.setCode(OptionCode_DomainServer.getValue()); |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 470 | |
| 471 | if (dnsServers.isEmpty()) { |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 472 | option.setLength((byte) DHCP_OPTION_DNS_LENGTH); |
| 473 | ByteBuffer dnsByteBuf = ByteBuffer.allocate(DHCP_OPTION_DNS_LENGTH); |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 474 | dnsByteBuf.put(DEFAULT_PRIMARY_DNS.toOctets()); |
| 475 | dnsByteBuf.put(DEFAULT_SECONDARY_DNS.toOctets()); |
| 476 | |
| 477 | option.setData(dnsByteBuf.array()); |
| 478 | } else { |
| 479 | int dnsLength = 4 * dnsServers.size(); |
| 480 | |
| 481 | option.setLength((byte) dnsLength); |
| 482 | |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 483 | ByteBuffer dnsByteBuf = ByteBuffer.allocate(DHCP_OPTION_DNS_LENGTH); |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 484 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 485 | for (String dnsServer : dnsServers) { |
| 486 | dnsByteBuf.put(IpAddress.valueOf(dnsServer).toOctets()); |
Daniel Park | 4d42100 | 2018-07-27 23:36:57 +0900 | [diff] [blame] | 487 | } |
| 488 | option.setData(dnsByteBuf.array()); |
| 489 | } |
| 490 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 491 | return option; |
| 492 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 493 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 494 | private DhcpOption doMtu(Subnet osSubnet) { |
| 495 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 496 | option.setCode(DHCP_OPTION_MTU); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 497 | option.setLength((byte) DHCP_OPTION_MTU_LENGTH); |
Daniel Park | 468e785 | 2018-07-28 00:38:45 +0900 | [diff] [blame] | 498 | Network osNetwork = osNetworkService.network(osSubnet.getNetworkId()); |
| 499 | checkNotNull(osNetwork); |
| 500 | checkNotNull(osNetwork.getMTU()); |
| 501 | |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 502 | option.setData(ByteBuffer.allocate(DHCP_OPTION_MTU_LENGTH) |
| 503 | .putShort(osNetwork.getMTU().shortValue()).array()); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 504 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 505 | return option; |
| 506 | } |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 507 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 508 | private DhcpOption doClasslessSr(Subnet osSubnet) { |
| 509 | DhcpOption option = new DhcpOption(); |
| 510 | option.setCode(OptionCode_Classless_Static_Route.getValue()); |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 511 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 512 | int hostRoutesSize = hostRoutesSize(ImmutableList.copyOf(osSubnet.getHostRoutes())); |
| 513 | if (hostRoutesSize == 0) { |
| 514 | throw new IllegalArgumentException("Illegal CIDR hostRoutesSize value!"); |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 515 | } |
| 516 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 517 | log.trace("hostRouteSize: {}", hostRoutesSize); |
Daniel Park | 48f1033 | 2018-08-02 10:57:27 +0900 | [diff] [blame] | 518 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 519 | option.setLength((byte) hostRoutesSize); |
| 520 | ByteBuffer hostRouteByteBuf = ByteBuffer.allocate(hostRoutesSize); |
| 521 | |
| 522 | osSubnet.getHostRoutes().forEach(h -> { |
| 523 | log.debug("processing host route information: {}", h.toString()); |
| 524 | |
| 525 | IpPrefix ipPrefix = IpPrefix.valueOf(h.getDestination()); |
| 526 | |
| 527 | hostRouteByteBuf.put(Objects.requireNonNull(bytesDestinationDescriptor(ipPrefix))); |
| 528 | |
| 529 | hostRouteByteBuf.put(Ip4Address.valueOf(h.getNexthop()).toOctets()); |
| 530 | }); |
| 531 | |
| 532 | option.setData(hostRouteByteBuf.array()); |
| 533 | return option; |
| 534 | } |
| 535 | |
| 536 | private DhcpOption doRouterAddr(Subnet osSubnet) { |
| 537 | DhcpOption option = new DhcpOption(); |
| 538 | option.setCode(OptionCode_RouterAddress.getValue()); |
Jian Li | 411bf2e | 2018-11-29 00:08:54 +0900 | [diff] [blame] | 539 | option.setLength(DHCP_OPTION_DATA_LENGTH); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 540 | option.setData(Ip4Address.valueOf(osSubnet.getGateway()).toOctets()); |
| 541 | return option; |
| 542 | } |
| 543 | |
| 544 | private DhcpOption doEnd() { |
| 545 | DhcpOption option = new DhcpOption(); |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 546 | option.setCode(OptionCode_END.getValue()); |
| 547 | option.setLength((byte) 1); |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 548 | return option; |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 549 | } |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 550 | |
| 551 | private int hostRoutesSize(List<HostRoute> hostRoutes) { |
| 552 | int size = 0; |
| 553 | int preFixLen; |
| 554 | |
| 555 | for (HostRoute h : hostRoutes) { |
| 556 | preFixLen = IpPrefix.valueOf(h.getDestination()).prefixLength(); |
| 557 | if (Math.max(V4_CIDR_LOWER_BOUND, preFixLen) == V4_CIDR_LOWER_BOUND || |
| 558 | Math.min(preFixLen, V4_CIDR_UPPER_BOUND) == V4_CIDR_UPPER_BOUND) { |
| 559 | throw new IllegalArgumentException("Illegal CIDR length value!"); |
| 560 | } |
| 561 | |
Daniel Park | f8e422d | 2018-07-30 14:14:37 +0900 | [diff] [blame] | 562 | for (int i = 0; i <= V4_BYTE_SIZE; i++) { |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 563 | if (preFixLen == Math.min(preFixLen, i * OCTET_BIT_LENGTH)) { |
| 564 | size = size + i + 1 + PADDING_SIZE; |
| 565 | break; |
| 566 | } |
| 567 | } |
| 568 | } |
| 569 | return size; |
| 570 | } |
| 571 | |
| 572 | private byte[] bytesDestinationDescriptor(IpPrefix ipPrefix) { |
| 573 | ByteBuffer byteBuffer; |
| 574 | int prefixLen = ipPrefix.prefixLength(); |
| 575 | |
| 576 | // retrieve ipPrefix to the destination descriptor format |
| 577 | // ex) 10.1.1.0/24 -> [10,1,1,0] |
| 578 | String[] ipPrefixString = ipPrefix.getIp4Prefix().toString() |
| 579 | .split("/")[0] |
| 580 | .split("\\."); |
| 581 | |
Jian Li | 5ecfd1a | 2018-12-10 11:41:03 +0900 | [diff] [blame] | 582 | // retrieve destination descriptor and put this to byte buffer |
| 583 | // according to RFC 3442 |
Daniel Park | f8e422d | 2018-07-30 14:14:37 +0900 | [diff] [blame] | 584 | // ex) 0.0.0.0/0 -> 0 |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 585 | // ex) 10.0.0.0/8 -> 8.10 |
| 586 | // ex) 10.17.0.0/16 -> 16.10.17 |
| 587 | // ex) 10.27.129.0/24 -> 24.10.27.129 |
| 588 | // ex) 10.229.0.128/25 -> 25.10.229.0.128 |
Daniel Park | f8e422d | 2018-07-30 14:14:37 +0900 | [diff] [blame] | 589 | for (int i = 0; i <= V4_BYTE_SIZE; i++) { |
Daniel Park | d9d4c29 | 2018-06-26 20:33:58 +0900 | [diff] [blame] | 590 | if (prefixLen == Math.min(prefixLen, i * OCTET_BIT_LENGTH)) { |
| 591 | byteBuffer = ByteBuffer.allocate(i + 1); |
| 592 | byteBuffer.put((byte) prefixLen); |
| 593 | |
| 594 | for (int j = 0; j < i; j++) { |
| 595 | byteBuffer.put((byte) Integer.parseInt(ipPrefixString[j])); |
| 596 | } |
| 597 | return byteBuffer.array(); |
| 598 | } |
| 599 | } |
| 600 | |
| 601 | return null; |
| 602 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 603 | } |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 604 | |
| 605 | private class InternalNodeEventListener implements OpenstackNodeListener { |
Jian Li | fb64d88 | 2018-11-27 10:57:40 +0900 | [diff] [blame] | 606 | @Override |
| 607 | public boolean isRelevant(OpenstackNodeEvent event) { |
| 608 | return event.subject().type() == COMPUTE; |
| 609 | } |
| 610 | |
Jian Li | 34220ea | 2018-11-14 01:30:24 +0900 | [diff] [blame] | 611 | private boolean isRelevantHelper() { |
| 612 | return Objects.equals(localNodeId, leadershipService.getLeader(appId.name())); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 613 | } |
| 614 | |
| 615 | @Override |
| 616 | public void event(OpenstackNodeEvent event) { |
| 617 | OpenstackNode osNode = event.subject(); |
| 618 | switch (event.type()) { |
| 619 | case OPENSTACK_NODE_COMPLETE: |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 620 | eventExecutor.execute(() -> processNodeCompletion(osNode)); |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 621 | break; |
| 622 | case OPENSTACK_NODE_INCOMPLETE: |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 623 | case OPENSTACK_NODE_CREATED: |
| 624 | case OPENSTACK_NODE_UPDATED: |
| 625 | case OPENSTACK_NODE_REMOVED: |
| 626 | default: |
| 627 | break; |
| 628 | } |
| 629 | } |
| 630 | |
Jian Li | 6a47fd0 | 2018-11-27 21:51:03 +0900 | [diff] [blame] | 631 | private void processNodeCompletion(OpenstackNode osNode) { |
| 632 | if (!isRelevantHelper()) { |
| 633 | return; |
| 634 | } |
| 635 | setDhcpRule(osNode, true); |
| 636 | } |
| 637 | |
| 638 | private void processNodeIncompletion(OpenstackNode osNode) { |
| 639 | if (!isRelevantHelper()) { |
| 640 | return; |
| 641 | } |
| 642 | setDhcpRule(osNode, false); |
| 643 | } |
| 644 | |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 645 | private void setDhcpRule(OpenstackNode openstackNode, boolean install) { |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 646 | TrafficSelector selector = DefaultTrafficSelector.builder() |
| 647 | .matchEthType(Ethernet.TYPE_IPV4) |
| 648 | .matchIPProtocol(IPv4.PROTOCOL_UDP) |
| 649 | .matchUdpDst(TpPort.tpPort(UDP.DHCP_SERVER_PORT)) |
| 650 | .matchUdpSrc(TpPort.tpPort(UDP.DHCP_CLIENT_PORT)) |
| 651 | .build(); |
| 652 | |
| 653 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| 654 | .punt() |
| 655 | .build(); |
| 656 | |
| 657 | osFlowRuleService.setRule( |
| 658 | appId, |
| 659 | openstackNode.intgBridge(), |
| 660 | selector, |
| 661 | treatment, |
| 662 | PRIORITY_DHCP_RULE, |
Jian Li | 5c09e21 | 2018-10-24 18:23:58 +0900 | [diff] [blame] | 663 | DHCP_TABLE, |
daniel park | 15506e8 | 2018-04-04 18:52:16 +0900 | [diff] [blame] | 664 | install); |
| 665 | } |
| 666 | } |
Hyunsun Moon | 44aac66 | 2017-02-18 02:07:01 +0900 | [diff] [blame] | 667 | } |