Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [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 | |
| 17 | package org.onosproject.net.behaviour.upf; |
| 18 | |
| 19 | import org.onlab.packet.Ip4Address; |
| 20 | import org.onlab.util.ImmutableByteSequence; |
| 21 | |
| 22 | import java.util.Objects; |
| 23 | |
| 24 | import static com.google.common.base.Preconditions.checkArgument; |
| 25 | |
| 26 | /** |
| 27 | * A single Packet Detection Rule (PDR), an entity described in the 3GPP |
| 28 | * specifications (although that does not mean that this class is 3GPP |
| 29 | * compliant). An instance of this class will be generated by a logical switch |
| 30 | * write request to the database-style PDR P4 table, and the resulting instance |
| 31 | * should contain all the information needed to reproduce that logical switch |
| 32 | * PDR in the event of a client read request. The instance should also contain |
| 33 | * sufficient information (or expose the means to retrieve such information) to |
| 34 | * generate the corresponding dataplane forwarding state that implements the PDR. |
| 35 | */ |
| 36 | public final class PacketDetectionRule { |
| 37 | // Match keys |
| 38 | private final Ip4Address ueAddr; // The UE IP address that this PDR matches on |
| 39 | private final ImmutableByteSequence teid; // The Tunnel Endpoint ID that this PDR matches on |
| 40 | private final Ip4Address tunnelDst; // The tunnel destination address that this PDR matches on |
| 41 | // Action parameters |
| 42 | private final ImmutableByteSequence sessionId; // The ID of the PFCP session that created this PDR |
| 43 | private final Integer ctrId; // Counter ID unique to this PDR |
| 44 | private final Integer farId; // The PFCP session-local ID of the FAR that should apply after this PDR hits |
| 45 | private final Type type; |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 46 | |
| 47 | private final Byte qfi; // QoS Flow Identifier of this PDR |
| 48 | private final boolean qfiPush; // True when QFI should be pushed to the packet |
| 49 | private final boolean qfiMatch; // True when QFI should be matched |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 50 | |
| 51 | private static final int SESSION_ID_BITWIDTH = 96; |
| 52 | |
| 53 | private PacketDetectionRule(ImmutableByteSequence sessionId, Integer ctrId, |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 54 | Integer farId, Ip4Address ueAddr, Byte qfi, |
| 55 | ImmutableByteSequence teid, Ip4Address tunnelDst, |
| 56 | Type type, boolean qfiPush, boolean qfiMatch) { |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 57 | this.ueAddr = ueAddr; |
| 58 | this.teid = teid; |
| 59 | this.tunnelDst = tunnelDst; |
| 60 | this.sessionId = sessionId; |
| 61 | this.ctrId = ctrId; |
| 62 | this.farId = farId; |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 63 | this.qfi = qfi; |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 64 | this.type = type; |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 65 | this.qfiPush = qfiPush; |
| 66 | this.qfiMatch = qfiMatch; |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | public static Builder builder() { |
| 70 | return new Builder(); |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * Return a string representing the match conditions of this PDR. |
| 75 | * |
| 76 | * @return a string representing the PDR match conditions |
| 77 | */ |
| 78 | public String matchString() { |
| 79 | if (matchesEncapped()) { |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 80 | return matchQfi() ? |
| 81 | String.format("Match(Dst=%s, TEID=%s, QFI=%s)", tunnelDest(), teid(), qfi()) : |
| 82 | String.format("Match(Dst=%s, TEID=%s)", tunnelDest(), teid()); |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 83 | } else { |
| 84 | return String.format("Match(Dst=%s, !GTP)", ueAddress()); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | @Override |
| 89 | public String toString() { |
| 90 | String actionParams = ""; |
| 91 | if (hasActionParameters()) { |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 92 | actionParams = hasQfi() && !matchQfi() ? |
| 93 | String.format("SEID=%s, FAR=%d, CtrIdx=%d, QFI=%s", |
| 94 | sessionId.toString(), farId, ctrId, qfi) : |
| 95 | String.format("SEID=%s, FAR=%d, CtrIdx=%d", |
| 96 | sessionId.toString(), farId, ctrId); |
| 97 | actionParams = pushQfi() ? String.format("%s, QFI_PUSH", actionParams) : actionParams; |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | return String.format("PDR{%s -> LoadParams(%s)}", |
| 101 | matchString(), actionParams); |
| 102 | } |
| 103 | |
| 104 | @Override |
| 105 | public boolean equals(Object obj) { |
| 106 | if (obj == this) { |
| 107 | return true; |
| 108 | } |
| 109 | if (obj == null) { |
| 110 | return false; |
| 111 | } |
| 112 | if (getClass() != obj.getClass()) { |
| 113 | return false; |
| 114 | } |
| 115 | PacketDetectionRule that = (PacketDetectionRule) obj; |
| 116 | |
| 117 | // Safe comparisons between potentially null objects |
| 118 | return (this.type.equals(that.type) && |
| 119 | Objects.equals(this.teid, that.teid) && |
| 120 | Objects.equals(this.tunnelDst, that.tunnelDst) && |
| 121 | Objects.equals(this.ueAddr, that.ueAddr) && |
| 122 | Objects.equals(this.ctrId, that.ctrId) && |
| 123 | Objects.equals(this.sessionId, that.sessionId) && |
| 124 | Objects.equals(this.farId, that.farId) && |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 125 | Objects.equals(this.qfi, that.qfi) && |
| 126 | Objects.equals(this.qfiPush, that.qfiPush) && |
| 127 | Objects.equals(this.qfiMatch, that.qfiMatch)); |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | @Override |
| 131 | public int hashCode() { |
| 132 | return Objects.hash(ueAddr, teid, tunnelDst, sessionId, ctrId, farId, |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 133 | qfi, type); |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 134 | } |
| 135 | |
| 136 | /** |
| 137 | * Instances created as a result of DELETE write requests will not have |
| 138 | * action parameters, only match keys. This method should be used to avoid |
| 139 | * null pointer exceptions in those instances. |
| 140 | * |
| 141 | * @return true if this instance has PDR action parameters, false otherwise. |
| 142 | */ |
| 143 | public boolean hasActionParameters() { |
| 144 | return type == Type.MATCH_ENCAPPED || type == Type.MATCH_UNENCAPPED; |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Return a new instance of this PDR with the action parameters stripped, |
| 149 | * leaving only the match keys. |
| 150 | * |
| 151 | * @return a new PDR with only match keys |
| 152 | */ |
| 153 | public PacketDetectionRule withoutActionParams() { |
| 154 | if (matchesEncapped()) { |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 155 | PacketDetectionRule.Builder pdrBuilder = PacketDetectionRule.builder() |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 156 | .withTeid(teid) |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 157 | .withTunnelDst(tunnelDst); |
| 158 | if (this.hasQfi() && this.matchQfi()) { |
| 159 | pdrBuilder.withQfiMatch(); |
| 160 | pdrBuilder.withQfi(qfi); |
| 161 | } |
| 162 | return pdrBuilder.build(); |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 163 | } else { |
| 164 | return PacketDetectionRule.builder() |
| 165 | .withUeAddr(ueAddr).build(); |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * True if this PDR matches on packets received with a GTP header, and false |
| 171 | * otherwise. |
| 172 | * |
| 173 | * @return true if the PDR matches only encapsulated packets |
| 174 | */ |
| 175 | public boolean matchesEncapped() { |
| 176 | return type == Type.MATCH_ENCAPPED || |
| 177 | type == Type.MATCH_ENCAPPED_NO_ACTION; |
| 178 | } |
| 179 | |
| 180 | /** |
| 181 | * True if this PDR matches on packets received without a GTP header, and |
| 182 | * false otherwise. |
| 183 | * |
| 184 | * @return true if the PDR matches only un-encapsulated packets |
| 185 | */ |
| 186 | public boolean matchesUnencapped() { |
| 187 | return type == Type.MATCH_UNENCAPPED || |
| 188 | type == Type.MATCH_UNENCAPPED_NO_ACTION; |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * Get the ID of the PFCP session that produced this PDR. |
| 193 | * |
| 194 | * @return PFCP session ID |
| 195 | */ |
| 196 | public ImmutableByteSequence sessionId() { |
| 197 | return sessionId; |
| 198 | } |
| 199 | |
| 200 | /** |
| 201 | * Get the UE IP address that this PDR matches on. |
| 202 | * |
| 203 | * @return UE IP address |
| 204 | */ |
| 205 | public Ip4Address ueAddress() { |
| 206 | return ueAddr; |
| 207 | } |
| 208 | |
| 209 | /** |
| 210 | * Get the identifier of the GTP tunnel that this PDR matches on. |
| 211 | * |
| 212 | * @return GTP tunnel ID |
| 213 | */ |
| 214 | public ImmutableByteSequence teid() { |
| 215 | return teid; |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Get the destination IP of the GTP tunnel that this PDR matches on. |
| 220 | * |
| 221 | * @return GTP tunnel destination IP |
| 222 | */ |
| 223 | public Ip4Address tunnelDest() { |
| 224 | return tunnelDst; |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * Get the dataplane PDR counter cell ID that this PDR is assigned. |
| 229 | * |
| 230 | * @return PDR counter cell ID |
| 231 | */ |
| 232 | public int counterId() { |
| 233 | return ctrId; |
| 234 | } |
| 235 | |
| 236 | /** |
| 237 | * Get the PFCP session-local ID of the far that should apply to packets |
| 238 | * that this PDR matches. |
| 239 | * |
| 240 | * @return PFCP session-local FAR ID |
| 241 | */ |
| 242 | public int farId() { |
| 243 | return farId; |
| 244 | } |
| 245 | |
| 246 | /** |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 247 | * Get the QoS Flow Identifier for this PDR. |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 248 | * |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 249 | * @return QoS Flow Identifier |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 250 | */ |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 251 | public byte qfi() { |
| 252 | return qfi; |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 253 | } |
| 254 | |
| 255 | /** |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 256 | * Returns whether QFi should be pushed to the packet. |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 257 | * |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 258 | * @return True if the QFI should be pushed to the packet, false otherwise |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 259 | */ |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 260 | public boolean pushQfi() { |
| 261 | return qfiPush; |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * Returns whether QFI should be matched on the packet or not. |
| 266 | * |
| 267 | * @return True if QFI should be matched on the packet, false otherwise |
| 268 | */ |
| 269 | public boolean matchQfi() { |
| 270 | return qfiMatch; |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * Checks if the PDR has a QFI to match upon or to push on the packet. |
| 275 | * |
| 276 | * @return True if the PDR has a QFI, false otherwise |
| 277 | */ |
| 278 | public boolean hasQfi() { |
| 279 | return qfi != null; |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 280 | } |
| 281 | |
| 282 | private enum Type { |
| 283 | /** |
| 284 | * Match on packets that are encapsulated in a GTP tunnel. |
| 285 | */ |
| 286 | MATCH_ENCAPPED, |
| 287 | /** |
| 288 | * Match on packets that are not encapsulated in a GTP tunnel. |
| 289 | */ |
| 290 | MATCH_UNENCAPPED, |
| 291 | /** |
| 292 | * For PDRs that match on encapsulated packets but do not yet have any |
| 293 | * action parameters set. |
| 294 | * These are usually built in the context of P4Runtime DELETE write requests. |
| 295 | */ |
| 296 | MATCH_ENCAPPED_NO_ACTION, |
| 297 | /** |
| 298 | * For PDRs that match on unencapsulated packets but do not yet have any |
| 299 | * action parameters set. |
| 300 | * These are usually built in the context of P4Runtime DELETE write requests. |
| 301 | */ |
| 302 | MATCH_UNENCAPPED_NO_ACTION |
| 303 | } |
| 304 | |
| 305 | public static class Builder { |
| 306 | private ImmutableByteSequence sessionId = null; |
| 307 | private Integer ctrId = null; |
| 308 | private Integer localFarId = null; |
| 309 | private Integer schedulingPriority = null; |
| 310 | private Ip4Address ueAddr = null; |
| 311 | private ImmutableByteSequence teid = null; |
| 312 | private Ip4Address tunnelDst = null; |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 313 | private Byte qfi = null; |
| 314 | private boolean qfiPush = false; |
| 315 | private boolean qfiMatch = false; |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 316 | |
| 317 | public Builder() { |
| 318 | |
| 319 | } |
| 320 | |
| 321 | /** |
| 322 | * Set the ID of the PFCP session that produced this PDR. |
| 323 | * |
| 324 | * @param sessionId PFCP session ID |
| 325 | * @return This builder object |
| 326 | */ |
| 327 | public Builder withSessionId(ImmutableByteSequence sessionId) { |
| 328 | this.sessionId = sessionId; |
| 329 | return this; |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * Set the ID of the PFCP session that produced this PDR. |
| 334 | * |
| 335 | * @param sessionId PFCP session ID |
| 336 | * @return This builder object |
| 337 | */ |
| 338 | public Builder withSessionId(long sessionId) { |
| 339 | try { |
| 340 | this.sessionId = ImmutableByteSequence.copyFrom(sessionId) |
| 341 | .fit(SESSION_ID_BITWIDTH); |
| 342 | } catch (ImmutableByteSequence.ByteSequenceTrimException e) { |
| 343 | // This error is literally impossible |
| 344 | } |
| 345 | return this; |
| 346 | } |
| 347 | |
| 348 | /** |
| 349 | * Set the UE IP address that this PDR matches on. |
| 350 | * |
| 351 | * @param ueAddr UE IP address |
| 352 | * @return This builder object |
| 353 | */ |
| 354 | public Builder withUeAddr(Ip4Address ueAddr) { |
| 355 | this.ueAddr = ueAddr; |
| 356 | return this; |
| 357 | } |
| 358 | |
| 359 | /** |
| 360 | * Set the dataplane PDR counter cell ID that this PDR is assigned. |
| 361 | * |
| 362 | * @param ctrId PDR counter cell ID |
| 363 | * @return This builder object |
| 364 | */ |
| 365 | public Builder withCounterId(int ctrId) { |
| 366 | this.ctrId = ctrId; |
| 367 | return this; |
| 368 | } |
| 369 | |
| 370 | |
| 371 | /** |
| 372 | * Set the PFCP session-local ID of the far that should apply to packets that this PDR matches. |
| 373 | * |
| 374 | * @param localFarId PFCP session-local FAR ID |
| 375 | * @return This builder object |
| 376 | */ |
| 377 | public Builder withLocalFarId(int localFarId) { |
| 378 | this.localFarId = localFarId; |
| 379 | return this; |
| 380 | } |
| 381 | |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 382 | /** |
| 383 | * Set the QoS Flow Identifier for this PDR. |
| 384 | * |
| 385 | * @param qfi GTP Tunnel QFI |
| 386 | * @return This builder object |
| 387 | */ |
| 388 | public Builder withQfi(byte qfi) { |
| 389 | this.qfi = qfi; |
| 390 | return this; |
| 391 | } |
| 392 | |
| 393 | /** |
| 394 | * The QoS Flow Identifier should be pushed to the packet. |
| 395 | * This is valid for downstream packets and for 5G traffic only. |
| 396 | * |
| 397 | * @return This builder object |
| 398 | */ |
| 399 | public Builder withQfiPush() { |
| 400 | this.qfiPush = true; |
| 401 | return this; |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * The QoS Flow Identifier should be matched to the packet. |
| 406 | * This is valid for upstream packets and for 5G traffic only. |
| 407 | * |
| 408 | * @return This builder object |
| 409 | */ |
| 410 | public Builder withQfiMatch() { |
| 411 | this.qfiMatch = true; |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 412 | return this; |
| 413 | } |
| 414 | |
| 415 | /** |
| 416 | * Set the identifier of the GTP tunnel that this PDR matches on. |
| 417 | * |
| 418 | * @param teid GTP tunnel ID |
| 419 | * @return This builder object |
| 420 | */ |
| 421 | public Builder withTeid(int teid) { |
| 422 | this.teid = ImmutableByteSequence.copyFrom(teid); |
| 423 | return this; |
| 424 | } |
| 425 | |
| 426 | /** |
| 427 | * Set the identifier of the GTP tunnel that this PDR matches on. |
| 428 | * |
| 429 | * @param teid GTP tunnel ID |
| 430 | * @return This builder object |
| 431 | */ |
| 432 | public Builder withTeid(ImmutableByteSequence teid) { |
| 433 | this.teid = teid; |
| 434 | return this; |
| 435 | } |
| 436 | |
| 437 | /** |
| 438 | * Set the destination IP of the GTP tunnel that this PDR matches on. |
| 439 | * |
| 440 | * @param tunnelDst GTP tunnel destination IP |
| 441 | * @return This builder object |
| 442 | */ |
| 443 | public Builder withTunnelDst(Ip4Address tunnelDst) { |
| 444 | this.tunnelDst = tunnelDst; |
| 445 | return this; |
| 446 | } |
| 447 | |
| 448 | /** |
| 449 | * Set the tunnel ID and destination IP of the GTP tunnel that this PDR matches on. |
| 450 | * |
| 451 | * @param teid GTP tunnel ID |
| 452 | * @param tunnelDst GTP tunnel destination IP |
| 453 | * @return This builder object |
| 454 | */ |
| 455 | public Builder withTunnel(ImmutableByteSequence teid, Ip4Address tunnelDst) { |
| 456 | this.teid = teid; |
| 457 | this.tunnelDst = tunnelDst; |
| 458 | return this; |
| 459 | } |
| 460 | |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 461 | /** |
| 462 | * Set the tunnel ID, destination IP and QFI of the GTP tunnel that this PDR matches on. |
| 463 | * |
| 464 | * @param teid GTP tunnel ID |
| 465 | * @param tunnelDst GTP tunnel destination IP |
| 466 | * @param qfi GTP QoS Flow Identifier |
| 467 | * @return This builder object |
| 468 | */ |
| 469 | public Builder withTunnel(ImmutableByteSequence teid, Ip4Address tunnelDst, byte qfi) { |
| 470 | this.teid = teid; |
| 471 | this.tunnelDst = tunnelDst; |
| 472 | this.qfi = qfi; |
| 473 | return this; |
| 474 | } |
| 475 | |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 476 | public PacketDetectionRule build() { |
| 477 | // Some match keys are required. |
| 478 | checkArgument( |
| 479 | (ueAddr != null && teid == null && tunnelDst == null) || |
| 480 | (ueAddr == null && teid != null && tunnelDst != null), |
| 481 | "Either a UE address or a TEID and Tunnel destination must be provided, but not both."); |
| 482 | // Action parameters are optional but must be all provided together if they are provided |
| 483 | checkArgument( |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 484 | (sessionId != null && ctrId != null && localFarId != null) || |
| 485 | (sessionId == null && ctrId == null && localFarId == null), |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 486 | "PDR action parameters must be provided together or not at all."); |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 487 | checkArgument(!qfiPush || !qfiMatch, |
| 488 | "Either match of push QFI can be true, not both."); |
| 489 | checkArgument(!qfiPush || qfi != null, |
| 490 | "A QFI must be provided when pushing QFI to the packet."); |
| 491 | checkArgument(!qfiMatch || qfi != null, |
| 492 | "A QFI must be provided when matching QFI on the packet."); |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 493 | Type type; |
| 494 | if (teid != null) { |
| 495 | if (sessionId != null) { |
| 496 | type = Type.MATCH_ENCAPPED; |
| 497 | } else { |
| 498 | type = Type.MATCH_ENCAPPED_NO_ACTION; |
| 499 | } |
| 500 | } else { |
| 501 | if (sessionId != null) { |
| 502 | type = Type.MATCH_UNENCAPPED; |
| 503 | } else { |
| 504 | type = Type.MATCH_UNENCAPPED_NO_ACTION; |
| 505 | } |
| 506 | } |
Daniele Moro | 08c9e7f | 2021-07-28 18:53:34 +0200 | [diff] [blame^] | 507 | return new PacketDetectionRule(sessionId, ctrId, localFarId, ueAddr, |
| 508 | qfi, teid, tunnelDst, type, |
| 509 | qfiPush, qfiMatch); |
Daniele Moro | 5e66f98 | 2021-06-11 16:41:48 +0200 | [diff] [blame] | 510 | } |
| 511 | } |
| 512 | } |