Jian Li | 858ccd7 | 2021-02-04 17:25:01 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2021-present Open Networking Foundation |
| 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.kubevirtnetworking.util; |
| 17 | |
Jian Li | 8f944d4 | 2021-03-23 00:43:29 +0900 | [diff] [blame] | 18 | import com.google.common.collect.Maps; |
Jian Li | 858ccd7 | 2021-02-04 17:25:01 +0900 | [diff] [blame] | 19 | import org.onlab.packet.Ip4Address; |
Daniel Park | a896880 | 2021-02-25 09:14:22 +0900 | [diff] [blame] | 20 | import org.onlab.packet.IpAddress; |
| 21 | import org.onlab.packet.TpPort; |
Jian Li | 858ccd7 | 2021-02-04 17:25:01 +0900 | [diff] [blame] | 22 | import org.onosproject.net.Device; |
| 23 | import org.onosproject.net.DeviceId; |
Jian Li | 8f944d4 | 2021-03-23 00:43:29 +0900 | [diff] [blame] | 24 | import org.onosproject.net.behaviour.ExtensionSelectorResolver; |
Jian Li | 858ccd7 | 2021-02-04 17:25:01 +0900 | [diff] [blame] | 25 | import org.onosproject.net.behaviour.ExtensionTreatmentResolver; |
| 26 | import org.onosproject.net.device.DeviceService; |
Daniel Park | a896880 | 2021-02-25 09:14:22 +0900 | [diff] [blame] | 27 | import org.onosproject.net.driver.DriverHandler; |
| 28 | import org.onosproject.net.driver.DriverService; |
Jian Li | 8f944d4 | 2021-03-23 00:43:29 +0900 | [diff] [blame] | 29 | import org.onosproject.net.flow.criteria.ExtensionSelector; |
| 30 | import org.onosproject.net.flow.criteria.ExtensionSelectorType; |
Jian Li | 858ccd7 | 2021-02-04 17:25:01 +0900 | [diff] [blame] | 31 | import org.onosproject.net.flow.instructions.ExtensionPropertyException; |
| 32 | import org.onosproject.net.flow.instructions.ExtensionTreatment; |
Daniel Park | a896880 | 2021-02-25 09:14:22 +0900 | [diff] [blame] | 33 | import org.onosproject.net.flow.instructions.ExtensionTreatmentType; |
Jian Li | 858ccd7 | 2021-02-04 17:25:01 +0900 | [diff] [blame] | 34 | import org.slf4j.Logger; |
| 35 | |
Daniel Park | a896880 | 2021-02-25 09:14:22 +0900 | [diff] [blame] | 36 | import java.util.ArrayList; |
| 37 | import java.util.List; |
Jian Li | 8f944d4 | 2021-03-23 00:43:29 +0900 | [diff] [blame] | 38 | import java.util.Map; |
| 39 | import java.util.Objects; |
Daniel Park | a896880 | 2021-02-25 09:14:22 +0900 | [diff] [blame] | 40 | |
Jian Li | 858ccd7 | 2021-02-04 17:25:01 +0900 | [diff] [blame] | 41 | import static org.onosproject.net.flow.instructions.ExtensionTreatmentType.ExtensionTreatmentTypes.NICIRA_LOAD; |
| 42 | import static org.onosproject.net.flow.instructions.ExtensionTreatmentType.ExtensionTreatmentTypes.NICIRA_MOV_ARP_SHA_TO_THA; |
| 43 | import static org.onosproject.net.flow.instructions.ExtensionTreatmentType.ExtensionTreatmentTypes.NICIRA_MOV_ARP_SPA_TO_TPA; |
| 44 | import static org.onosproject.net.flow.instructions.ExtensionTreatmentType.ExtensionTreatmentTypes.NICIRA_MOV_ETH_SRC_TO_DST; |
| 45 | import static org.onosproject.net.flow.instructions.ExtensionTreatmentType.ExtensionTreatmentTypes.NICIRA_MOV_IP_SRC_TO_DST; |
| 46 | import static org.onosproject.net.flow.instructions.ExtensionTreatmentType.ExtensionTreatmentTypes.NICIRA_SET_TUNNEL_DST; |
| 47 | import static org.slf4j.LoggerFactory.getLogger; |
| 48 | |
| 49 | /** |
| 50 | * Provides common methods to help populating flow rules for SONA applications. |
| 51 | */ |
| 52 | public final class RulePopulatorUtil { |
| 53 | |
| 54 | private static final Logger log = getLogger(RulePopulatorUtil.class); |
| 55 | |
| 56 | private static final int OFF_SET_BIT = 0; |
| 57 | private static final int REMAINDER_BIT = 8; |
| 58 | |
| 59 | private static final String OFF_SET_N_BITS = "ofsNbits"; |
| 60 | private static final String DESTINATION = "dst"; |
| 61 | private static final String VALUE = "value"; |
| 62 | private static final String TUNNEL_DST = "tunnelDst"; |
| 63 | |
Daniel Park | a896880 | 2021-02-25 09:14:22 +0900 | [diff] [blame] | 64 | private static final String CT_FLAGS = "flags"; |
| 65 | private static final String CT_ZONE = "zone"; |
| 66 | private static final String CT_TABLE = "recircTable"; |
| 67 | private static final String CT_STATE = "ctState"; |
| 68 | private static final String CT_STATE_MASK = "ctStateMask"; |
| 69 | private static final String CT_PRESENT_FLAGS = "presentFlags"; |
| 70 | private static final String CT_IPADDRESS_MIN = "ipAddressMin"; |
| 71 | private static final String CT_IPADDRESS_MAX = "ipAddressMax"; |
| 72 | private static final String CT_PORT_MIN = "portMin"; |
| 73 | private static final String CT_PORT_MAX = "portMax"; |
| 74 | private static final String CT_NESTED_ACTIONS = "nestedActions"; |
| 75 | |
| 76 | public static final int CT_NAT_SRC_FLAG = 0; |
| 77 | public static final int CT_NAT_DST_FLAG = 1; |
| 78 | public static final int CT_NAT_PERSISTENT_FLAG = 2; |
| 79 | public static final int CT_NAT_PROTO_HASH_FLAG = 3; |
| 80 | public static final int CT_NAT_PROTO_RANDOM_FLAG = 4; |
| 81 | |
| 82 | private static final int ADDRESS_V4_MIN_FLAG = 0; |
| 83 | private static final int ADDRESS_V4_MAX_FLAG = 1; |
| 84 | private static final int ADDRESS_V6_MIN_FLAG = 2; |
| 85 | private static final int ADDRESS_V6_MAX_FLAG = 3; |
| 86 | private static final int PORT_MIN_FLAG = 4; |
| 87 | private static final int PORT_MAX_FLAG = 5; |
| 88 | |
| 89 | private static final String STR_ZERO = "0"; |
| 90 | private static final String STR_ONE = "1"; |
| 91 | private static final String STR_PADDING = "0000000000000000"; |
| 92 | private static final int MASK_BEGIN_IDX = 0; |
| 93 | private static final int MASK_MAX_IDX = 16; |
| 94 | private static final int MASK_RADIX = 2; |
| 95 | private static final int PORT_RADIX = 16; |
| 96 | |
| 97 | // Refer to http://openvswitch.org/support/dist-docs/ovs-fields.7.txt for the values |
| 98 | public static final long CT_STATE_NONE = 0; |
| 99 | public static final long CT_STATE_NEW = 0x01; |
| 100 | public static final long CT_STATE_EST = 0x02; |
| 101 | public static final long CT_STATE_NOT_TRK = 0x20; |
| 102 | public static final long CT_STATE_TRK = 0x20; |
| 103 | |
Jian Li | 858ccd7 | 2021-02-04 17:25:01 +0900 | [diff] [blame] | 104 | // layer 3 nicira fields |
| 105 | private static final int NXM_OF_IP_SRC = 0x00000e04; |
| 106 | private static final int NXM_OF_IP_DST = 0x00001004; |
| 107 | private static final int NXM_OF_IP_PROT = 0x00000c01; |
| 108 | |
| 109 | public static final int NXM_NX_IP_TTL = 0x00013a01; |
| 110 | public static final int NXM_NX_IP_FRAG = 0x00013401; |
| 111 | public static final int NXM_OF_ARP_OP = 0x00001e02; |
| 112 | public static final int NXM_OF_ARP_SPA = 0x00002004; |
| 113 | public static final int NXM_OF_ARP_TPA = 0x00002204; |
| 114 | public static final int NXM_NX_ARP_SHA = 0x00012206; |
| 115 | public static final int NXM_NX_ARP_THA = 0x00012406; |
| 116 | |
| 117 | // layer 4 nicira fields |
| 118 | public static final int NXM_OF_TCP_SRC = 0x00001202; |
| 119 | public static final int NXM_OF_TCP_DST = 0x00001402; |
| 120 | public static final int NXM_NX_TCP_FLAGS = 0x00014402; |
| 121 | public static final int NXM_OF_UDP_SRC = 0x00001602; |
| 122 | public static final int NXM_OF_UDP_DST = 0x00001802; |
| 123 | |
| 124 | public static final int NXM_OF_ICMP_TYPE = 0x00001a01; |
| 125 | public static final int NXM_OF_ICMP_CODE = 0x00001c01; |
| 126 | |
Daniel Park | a896880 | 2021-02-25 09:14:22 +0900 | [diff] [blame] | 127 | |
Jian Li | 858ccd7 | 2021-02-04 17:25:01 +0900 | [diff] [blame] | 128 | private RulePopulatorUtil() { |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Returns the nicira load extension treatment. |
| 133 | * |
| 134 | * @param device device instance |
| 135 | * @param field field code |
| 136 | * @param value value to load |
| 137 | * @return load extension treatment |
| 138 | */ |
| 139 | public static ExtensionTreatment buildLoadExtension(Device device, |
| 140 | long field, |
| 141 | long value) { |
| 142 | if (!checkTreatmentResolver(device)) { |
| 143 | return null; |
| 144 | } |
| 145 | |
| 146 | ExtensionTreatmentResolver resolver = device.as(ExtensionTreatmentResolver.class); |
| 147 | ExtensionTreatment treatment = |
| 148 | resolver.getExtensionInstruction(NICIRA_LOAD.type()); |
| 149 | |
| 150 | int ofsNbits = OFF_SET_BIT << 6 | (REMAINDER_BIT - 1); |
| 151 | |
| 152 | try { |
| 153 | treatment.setPropertyValue(OFF_SET_N_BITS, ofsNbits); |
| 154 | treatment.setPropertyValue(DESTINATION, field); |
| 155 | treatment.setPropertyValue(VALUE, value); |
| 156 | return treatment; |
| 157 | } catch (ExtensionPropertyException e) { |
| 158 | log.error("Failed to set nicira load extension treatment for {}", |
| 159 | device.id()); |
| 160 | return null; |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * Returns the nicira move source MAC to destination MAC extension treatment. |
| 166 | * |
| 167 | * @param device device instance |
| 168 | * @return move extension treatment |
| 169 | */ |
| 170 | public static ExtensionTreatment buildMoveEthSrcToDstExtension(Device device) { |
| 171 | if (!checkTreatmentResolver(device)) { |
| 172 | return null; |
| 173 | } |
| 174 | |
| 175 | ExtensionTreatmentResolver resolver = device.as(ExtensionTreatmentResolver.class); |
| 176 | return resolver.getExtensionInstruction(NICIRA_MOV_ETH_SRC_TO_DST.type()); |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * Returns the nicira move source IP to destination IP extension treatment. |
| 181 | * |
| 182 | * @param device device instance |
| 183 | * @return move extension treatment |
| 184 | */ |
| 185 | public static ExtensionTreatment buildMoveIpSrcToDstExtension(Device device) { |
| 186 | if (!checkTreatmentResolver(device)) { |
| 187 | return null; |
| 188 | } |
| 189 | |
| 190 | ExtensionTreatmentResolver resolver = device.as(ExtensionTreatmentResolver.class); |
| 191 | return resolver.getExtensionInstruction(NICIRA_MOV_IP_SRC_TO_DST.type()); |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Returns the nicira move ARP SHA to THA extension treatment. |
| 196 | * |
| 197 | * @param device device instance |
| 198 | * @return move extension treatment |
| 199 | */ |
| 200 | public static ExtensionTreatment buildMoveArpShaToThaExtension(Device device) { |
| 201 | if (!checkTreatmentResolver(device)) { |
| 202 | return null; |
| 203 | } |
| 204 | |
| 205 | ExtensionTreatmentResolver resolver = device.as(ExtensionTreatmentResolver.class); |
| 206 | return resolver.getExtensionInstruction(NICIRA_MOV_ARP_SHA_TO_THA.type()); |
| 207 | } |
| 208 | |
| 209 | /** |
| 210 | * Returns the nicira move ARP SPA to TPA extension treatment. |
| 211 | * |
| 212 | * @param device device instance |
| 213 | * @return move extension treatment |
| 214 | */ |
| 215 | public static ExtensionTreatment buildMoveArpSpaToTpaExtension(Device device) { |
| 216 | if (!checkTreatmentResolver(device)) { |
| 217 | return null; |
| 218 | } |
| 219 | |
| 220 | ExtensionTreatmentResolver resolver = device.as(ExtensionTreatmentResolver.class); |
| 221 | return resolver.getExtensionInstruction(NICIRA_MOV_ARP_SPA_TO_TPA.type()); |
| 222 | } |
| 223 | |
| 224 | private static boolean checkTreatmentResolver(Device device) { |
| 225 | if (device == null || !device.is(ExtensionTreatmentResolver.class)) { |
| 226 | log.warn("Nicira extension treatment is not supported"); |
| 227 | return false; |
| 228 | } |
| 229 | |
| 230 | return true; |
| 231 | } |
| 232 | |
| 233 | /** |
| 234 | * Returns tunnel destination extension treatment object. |
| 235 | * |
| 236 | * @param deviceService driver service |
| 237 | * @param deviceId device id to apply this treatment |
| 238 | * @param remoteIp tunnel destination ip address |
| 239 | * @return extension treatment |
| 240 | */ |
| 241 | public static ExtensionTreatment buildExtension(DeviceService deviceService, |
| 242 | DeviceId deviceId, |
| 243 | Ip4Address remoteIp) { |
| 244 | Device device = deviceService.getDevice(deviceId); |
| 245 | if (!checkTreatmentResolver(device)) { |
| 246 | return null; |
| 247 | } |
| 248 | |
| 249 | if (device == null) { |
| 250 | return null; |
| 251 | } |
| 252 | |
| 253 | ExtensionTreatmentResolver resolver = device.as(ExtensionTreatmentResolver.class); |
| 254 | ExtensionTreatment treatment = |
| 255 | resolver.getExtensionInstruction(NICIRA_SET_TUNNEL_DST.type()); |
| 256 | try { |
| 257 | treatment.setPropertyValue(TUNNEL_DST, remoteIp); |
| 258 | return treatment; |
| 259 | } catch (ExtensionPropertyException e) { |
| 260 | log.warn("Failed to get tunnelDst extension treatment for {} " + |
| 261 | "because of {}", deviceId, e); |
| 262 | return null; |
| 263 | } |
| 264 | } |
Daniel Park | a896880 | 2021-02-25 09:14:22 +0900 | [diff] [blame] | 265 | |
Jian Li | 8f944d4 | 2021-03-23 00:43:29 +0900 | [diff] [blame] | 266 | |
| 267 | /** |
| 268 | * Builds OVS ConnTrack matches. |
| 269 | * |
| 270 | * @param driverService driver service |
| 271 | * @param deviceId device ID |
| 272 | * @param ctState connection tracking sate masking value |
| 273 | * @param ctSateMask connection tracking sate masking value |
| 274 | * @return OVS ConnTrack extension match |
| 275 | */ |
| 276 | public static ExtensionSelector buildCtExtensionSelector(DriverService driverService, |
| 277 | DeviceId deviceId, |
| 278 | long ctState, |
| 279 | long ctSateMask) { |
| 280 | DriverHandler handler = driverService.createHandler(deviceId); |
| 281 | ExtensionSelectorResolver esr = handler.behaviour(ExtensionSelectorResolver.class); |
| 282 | |
| 283 | ExtensionSelector extensionSelector = esr.getExtensionSelector( |
| 284 | ExtensionSelectorType.ExtensionSelectorTypes.NICIRA_MATCH_CONNTRACK_STATE.type()); |
| 285 | try { |
| 286 | extensionSelector.setPropertyValue(CT_STATE, ctState); |
| 287 | extensionSelector.setPropertyValue(CT_STATE_MASK, ctSateMask); |
| 288 | } catch (Exception e) { |
| 289 | log.error("Failed to set nicira match CT state because of {}", e); |
| 290 | return null; |
| 291 | } |
| 292 | |
| 293 | return extensionSelector; |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * Computes ConnTack State flag values. |
| 298 | * |
| 299 | * @param isTracking true for +trk, false for -trk |
| 300 | * @param isNew true for +new, false for nothing |
| 301 | * @param isEstablished true for +est, false for nothing |
| 302 | * @return ConnTrack State flags |
| 303 | */ |
| 304 | public static long computeCtStateFlag(boolean isTracking, |
| 305 | boolean isNew, |
| 306 | boolean isEstablished) { |
| 307 | long ctMaskFlag = 0x00; |
| 308 | |
| 309 | if (isTracking) { |
| 310 | ctMaskFlag = ctMaskFlag | CT_STATE_TRK; |
| 311 | } |
| 312 | |
| 313 | if (isNew) { |
| 314 | ctMaskFlag = ctMaskFlag | CT_STATE_TRK; |
| 315 | ctMaskFlag = ctMaskFlag | CT_STATE_NEW; |
| 316 | } |
| 317 | |
| 318 | if (isEstablished) { |
| 319 | ctMaskFlag = ctMaskFlag | CT_STATE_TRK; |
| 320 | ctMaskFlag = ctMaskFlag | CT_STATE_EST; |
| 321 | } |
| 322 | |
| 323 | return ctMaskFlag; |
| 324 | } |
| 325 | |
| 326 | /** |
| 327 | * Computes ConnTrack State mask values. |
| 328 | * |
| 329 | * @param isTracking true for setting +trk/-trk value, false for otherwise |
| 330 | * @param isNew true for setting +new value, false for otherwise |
| 331 | * @param isEstablished true for setting +est value, false for otherwise |
| 332 | * @return ConnTrack State Mask value |
| 333 | */ |
| 334 | public static long computeCtMaskFlag(boolean isTracking, |
| 335 | boolean isNew, |
| 336 | boolean isEstablished) { |
| 337 | long ctMaskFlag = 0x00; |
| 338 | |
| 339 | if (isTracking) { |
| 340 | ctMaskFlag = ctMaskFlag | CT_STATE_TRK; |
| 341 | } |
| 342 | |
| 343 | if (isNew) { |
| 344 | ctMaskFlag = ctMaskFlag | CT_STATE_TRK; |
| 345 | ctMaskFlag = ctMaskFlag | CT_STATE_NEW; |
| 346 | } |
| 347 | |
| 348 | if (isEstablished) { |
| 349 | ctMaskFlag = ctMaskFlag | CT_STATE_TRK; |
| 350 | ctMaskFlag = ctMaskFlag | CT_STATE_EST; |
| 351 | } |
| 352 | |
| 353 | return ctMaskFlag; |
| 354 | } |
| 355 | |
| 356 | /** |
| 357 | * Computes port and port mask value from port min/max values. |
| 358 | * |
| 359 | * @param portMin port min value |
| 360 | * @param portMax port max value |
| 361 | * @return Port Mask value |
| 362 | */ |
| 363 | public static Map<TpPort, TpPort> buildPortRangeMatches(int portMin, int portMax) { |
| 364 | |
| 365 | boolean processing = true; |
| 366 | int start = portMin; |
| 367 | Map<TpPort, TpPort> portMaskMap = Maps.newHashMap(); |
| 368 | while (processing) { |
| 369 | String minStr = Integer.toBinaryString(start); |
| 370 | String binStrMinPadded = STR_PADDING.substring(minStr.length()) + minStr; |
| 371 | |
| 372 | int mask = testMasks(binStrMinPadded, start, portMax); |
| 373 | int maskStart = binLower(binStrMinPadded, mask); |
| 374 | int maskEnd = binHigher(binStrMinPadded, mask); |
| 375 | |
| 376 | log.debug("start : {} port/mask = {} / {} ", start, getMask(mask), maskStart); |
| 377 | portMaskMap.put(TpPort.tpPort(maskStart), TpPort.tpPort( |
| 378 | Integer.parseInt(Objects.requireNonNull(getMask(mask)), PORT_RADIX))); |
| 379 | |
| 380 | start = maskEnd + 1; |
| 381 | if (start > portMax) { |
| 382 | processing = false; |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | return portMaskMap; |
| 387 | } |
| 388 | |
| 389 | private static int binLower(String binStr, int bits) { |
| 390 | StringBuilder outBin = new StringBuilder( |
| 391 | binStr.substring(MASK_BEGIN_IDX, MASK_MAX_IDX - bits)); |
| 392 | for (int i = 0; i < bits; i++) { |
| 393 | outBin.append(STR_ZERO); |
| 394 | } |
| 395 | |
| 396 | return Integer.parseInt(outBin.toString(), MASK_RADIX); |
| 397 | } |
| 398 | |
| 399 | private static int binHigher(String binStr, int bits) { |
| 400 | StringBuilder outBin = new StringBuilder( |
| 401 | binStr.substring(MASK_BEGIN_IDX, MASK_MAX_IDX - bits)); |
| 402 | for (int i = 0; i < bits; i++) { |
| 403 | outBin.append(STR_ONE); |
| 404 | } |
| 405 | |
| 406 | return Integer.parseInt(outBin.toString(), MASK_RADIX); |
| 407 | } |
| 408 | |
| 409 | private static int testMasks(String binStr, int start, int end) { |
| 410 | int mask = MASK_BEGIN_IDX; |
| 411 | for (; mask <= MASK_MAX_IDX; mask++) { |
| 412 | int maskStart = binLower(binStr, mask); |
| 413 | int maskEnd = binHigher(binStr, mask); |
| 414 | if (maskStart < start || maskEnd > end) { |
| 415 | return mask - 1; |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | return mask; |
| 420 | } |
| 421 | |
| 422 | private static String getMask(int bits) { |
| 423 | switch (bits) { |
| 424 | case 0: return "ffff"; |
| 425 | case 1: return "fffe"; |
| 426 | case 2: return "fffc"; |
| 427 | case 3: return "fff8"; |
| 428 | case 4: return "fff0"; |
| 429 | case 5: return "ffe0"; |
| 430 | case 6: return "ffc0"; |
| 431 | case 7: return "ff80"; |
| 432 | case 8: return "ff00"; |
| 433 | case 9: return "fe00"; |
| 434 | case 10: return "fc00"; |
| 435 | case 11: return "f800"; |
| 436 | case 12: return "f000"; |
| 437 | case 13: return "e000"; |
| 438 | case 14: return "c000"; |
| 439 | case 15: return "8000"; |
| 440 | case 16: return "0000"; |
| 441 | default: return null; |
| 442 | } |
| 443 | } |
| 444 | |
Daniel Park | a896880 | 2021-02-25 09:14:22 +0900 | [diff] [blame] | 445 | public static NiciraConnTrackTreatmentBuilder niciraConnTrackTreatmentBuilder(DriverService ds, DeviceId id) { |
| 446 | return new NiciraConnTrackTreatmentBuilder(ds, id); |
| 447 | } |
| 448 | /** |
| 449 | * Builder class for OVS Connection Tracking feature actions. |
| 450 | */ |
| 451 | public static final class NiciraConnTrackTreatmentBuilder { |
| 452 | |
| 453 | private DriverService driverService; |
| 454 | private DeviceId deviceId; |
| 455 | private IpAddress natAddress = null; |
| 456 | private TpPort natPortMin = null; |
| 457 | private TpPort natPortMax = null; |
| 458 | private int zone; |
| 459 | private boolean commit; |
| 460 | private short table = -1; |
| 461 | private boolean natAction; |
| 462 | private int natFlag; |
| 463 | |
| 464 | // private constructor |
| 465 | private NiciraConnTrackTreatmentBuilder(DriverService driverService, |
| 466 | DeviceId deviceId) { |
| 467 | this.driverService = driverService; |
| 468 | this.deviceId = deviceId; |
| 469 | } |
| 470 | |
| 471 | /** |
| 472 | * Sets commit flag. |
| 473 | * |
| 474 | * @param c true if commit, false if not. |
| 475 | * @return NiriraConnTrackTreatmentBuilder object |
| 476 | */ |
| 477 | public NiciraConnTrackTreatmentBuilder commit(boolean c) { |
| 478 | this.commit = c; |
| 479 | return this; |
| 480 | } |
| 481 | |
| 482 | /** |
| 483 | * Sets zone number. |
| 484 | * |
| 485 | * @param z zone number |
| 486 | * @return NiriraConnTrackTreatmentBuilder object |
| 487 | */ |
| 488 | public NiciraConnTrackTreatmentBuilder zone(int z) { |
| 489 | this.zone = z; |
| 490 | return this; |
| 491 | } |
| 492 | |
| 493 | /** |
| 494 | * Sets recirculation table number. |
| 495 | * |
| 496 | * @param t table number to restart |
| 497 | * @return NiriraConnTrackTreatmentBuilder object |
| 498 | */ |
| 499 | public NiciraConnTrackTreatmentBuilder table(short t) { |
| 500 | this.table = t; |
| 501 | return this; |
| 502 | } |
| 503 | |
| 504 | /** |
| 505 | * Sets IP address for NAT. |
| 506 | * |
| 507 | * @param ip NAT IP address |
| 508 | * @return NiriraConnTrackTreatmentBuilder object |
| 509 | */ |
| 510 | public NiciraConnTrackTreatmentBuilder natIp(IpAddress ip) { |
| 511 | this.natAddress = ip; |
| 512 | return this; |
| 513 | } |
| 514 | |
| 515 | /** |
| 516 | * Sets min port for NAT. |
| 517 | * |
| 518 | * @param port port number |
| 519 | * @return NiciraConnTrackTreatmentBuilder object |
| 520 | */ |
| 521 | public NiciraConnTrackTreatmentBuilder natPortMin(TpPort port) { |
| 522 | this.natPortMin = port; |
| 523 | return this; |
| 524 | } |
| 525 | |
| 526 | /** |
| 527 | * Sets max port for NAT. |
| 528 | * |
| 529 | * @param port port number |
| 530 | * @return NiciraConnTrackTreatmentBuilder object |
| 531 | */ |
| 532 | public NiciraConnTrackTreatmentBuilder natPortMax(TpPort port) { |
| 533 | this.natPortMax = port; |
| 534 | return this; |
| 535 | } |
| 536 | |
| 537 | /** |
| 538 | * Sets NAT flags. |
| 539 | * SRC NAT: 1 << 0 |
| 540 | * DST NAT: 1 << 1 |
| 541 | * PERSISTENT NAT: 1 << 2 |
| 542 | * PROTO_HASH NAT: 1 << 3 |
| 543 | * PROTO_RANDOM NAT : 1 << 4 |
| 544 | * |
| 545 | * @param flag flag value |
| 546 | * @return NiciraConnTrackTreatmentBuilder object |
| 547 | */ |
| 548 | public NiciraConnTrackTreatmentBuilder natFlag(int flag) { |
| 549 | this.natFlag = 1 << flag; |
| 550 | return this; |
| 551 | } |
| 552 | |
| 553 | /** |
| 554 | * Sets the flag for NAT action. |
| 555 | * |
| 556 | * @param nat nat action is included if true, no nat action otherwise |
| 557 | * @return NiriraConnTrackTreatmentBuilder object |
| 558 | */ |
| 559 | public NiciraConnTrackTreatmentBuilder natAction(boolean nat) { |
| 560 | this.natAction = nat; |
| 561 | return this; |
| 562 | } |
| 563 | |
| 564 | /** |
| 565 | * Builds extension treatment for OVS ConnTack and NAT feature. |
| 566 | * |
| 567 | * @return ExtensionTreatment object |
| 568 | */ |
| 569 | public ExtensionTreatment build() { |
| 570 | DriverHandler handler = driverService.createHandler(deviceId); |
| 571 | ExtensionTreatmentResolver etr = |
| 572 | handler.behaviour(ExtensionTreatmentResolver.class); |
| 573 | |
| 574 | ExtensionTreatment natTreatment = etr.getExtensionInstruction( |
| 575 | ExtensionTreatmentType.ExtensionTreatmentTypes.NICIRA_NAT.type()); |
| 576 | try { |
| 577 | |
| 578 | if (natAddress == null && natPortMin == null && natPortMax == null) { |
| 579 | natTreatment.setPropertyValue(CT_FLAGS, 0); |
| 580 | natTreatment.setPropertyValue(CT_PRESENT_FLAGS, 0); |
| 581 | } else { |
| 582 | natTreatment.setPropertyValue(CT_FLAGS, this.natFlag); |
| 583 | |
| 584 | natTreatment.setPropertyValue(CT_PRESENT_FLAGS, |
| 585 | buildPresentFlag((natPortMin != null && natPortMax != null), |
| 586 | natAddress != null)); |
| 587 | } |
| 588 | |
| 589 | if (natAddress != null) { |
| 590 | natTreatment.setPropertyValue(CT_IPADDRESS_MIN, natAddress); |
| 591 | natTreatment.setPropertyValue(CT_IPADDRESS_MAX, natAddress); |
| 592 | } |
| 593 | |
| 594 | if (natPortMin != null) { |
| 595 | natTreatment.setPropertyValue(CT_PORT_MIN, natPortMin.toInt()); |
| 596 | } |
| 597 | |
| 598 | if (natPortMax != null) { |
| 599 | natTreatment.setPropertyValue(CT_PORT_MAX, natPortMax.toInt()); |
| 600 | } |
| 601 | |
| 602 | } catch (Exception e) { |
| 603 | log.error("Failed to set NAT due to error : {}", e); |
| 604 | return null; |
| 605 | } |
| 606 | |
| 607 | ExtensionTreatment ctTreatment = etr.getExtensionInstruction( |
| 608 | ExtensionTreatmentType.ExtensionTreatmentTypes.NICIRA_CT.type()); |
| 609 | try { |
| 610 | List<ExtensionTreatment> nat = new ArrayList<>(); |
| 611 | if (natAction) { |
| 612 | nat.add(natTreatment); |
| 613 | } |
| 614 | ctTreatment.setPropertyValue(CT_FLAGS, commit ? 1 : 0); |
| 615 | ctTreatment.setPropertyValue(CT_ZONE, zone); |
| 616 | ctTreatment.setPropertyValue(CT_TABLE, table > -1 ? table : 0xff); |
| 617 | ctTreatment.setPropertyValue(CT_NESTED_ACTIONS, nat); |
| 618 | } catch (Exception e) { |
| 619 | log.error("Failed to set CT due to error : {}", e); |
| 620 | return null; |
| 621 | } |
| 622 | |
| 623 | return ctTreatment; |
| 624 | } |
| 625 | |
| 626 | private int buildPresentFlag(boolean isPortPresent, boolean isAddressPresent) { |
| 627 | |
| 628 | int presentFlag = 0; |
| 629 | |
| 630 | if (isPortPresent) { |
| 631 | presentFlag = 1 << PORT_MIN_FLAG | 1 << PORT_MAX_FLAG; |
| 632 | } |
| 633 | |
| 634 | if (isAddressPresent) { |
| 635 | // TODO: need to support IPv6 address |
| 636 | presentFlag = presentFlag | 1 << ADDRESS_V4_MIN_FLAG | 1 << ADDRESS_V4_MAX_FLAG; |
| 637 | } |
| 638 | |
| 639 | return presentFlag; |
| 640 | } |
| 641 | } |
Jian Li | 858ccd7 | 2021-02-04 17:25:01 +0900 | [diff] [blame] | 642 | } |