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