1 /*******************************************************************************
2 ################################################################################
3 # Copyright (c) [2017-2019] [Radisys] #
5 # Licensed under the Apache License, Version 2.0 (the "License"); #
6 # you may not use this file except in compliance with the License. #
7 # You may obtain a copy of the License at #
9 # http://www.apache.org/licenses/LICENSE-2.0 #
11 # Unless required by applicable law or agreed to in writing, software #
12 # distributed under the License is distributed on an "AS IS" BASIS, #
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. #
14 # See the License for the specific language governing permissions and #
15 # limitations under the License. #
16 ################################################################################
17 *******************************************************************************/
19 /* This functions contains main() for cu_app */
20 #include "common_def.h"
21 #include "cu_stub_sctp.h"
22 #include "cu_stub_egtp.h"
23 #include "OCTET_STRING.h"
24 #include "cu_f1ap_msg_hdl.h"
28 #include "CmInterface.h"
33 extern StartupConfig g_cfg;
36 /*******************************************************************
38 * @brief Handles SCTP notification
42 * Function : sctpNtfyInd
45 * Handles SCTP notification
47 * @params[in] sctp notification
50 ******************************************************************/
51 void sctpNtfyInd(CmInetSctpNotification *ntfy)
58 openlog("CU_STUB",LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
60 /*******************************************************************
62 * @brief Main function of CU APP
69 * - Reads CU related configurations
70 * - Initialize SCTP Parameters
71 * - Start SCTP receiver thread
74 * @return ROK - success
77 * ****************************************************************/
86 DU_LOG("\nINFO --> CU_STUB : Starting CU_STUB\n");
88 /* Start thread to receive console input */
89 pthread_attr_init(&attr);
90 pthread_attr_setstacksize(&attr, (size_t)NULLD);
91 pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
92 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
93 retVal = pthread_create(&conThrdId, &attr, cuConsoleHandler, NULLP);
96 DU_LOG("\nERROR --> CU_STUB : Thread creation failed. Cause %d", retVal);
98 pthread_attr_destroy(&attr);
100 /* Read CU configurations */
107 /* Initializing SCTP global parameters */
110 /* Start CU-SCTP to listen on incoming connection */
117 /*******************************************************************
119 * @brief Read CU related configuration
123 * Function : readCuCfg
126 * - RRead CU related configuration
129 * @return ROK - success
132 * ****************************************************************/
136 uint8_t numDu, *numRemoteCu;
137 uint32_t ipv4_du, ipv4_cu, ipv4_remote_cu;
139 DU_LOG("\nDEBUG --> CU_STUB : Reading CU configurations");
141 cuCb.cuCfgParams.cuId = CU_ID;
142 strcpy(cuCb.cuCfgParams.cuName, CU_NAME);
145 if( getStartupConfigForStub(&g_cfg) != ROK )
147 DU_LOG("\nError --> CU_STUB : Could not fetch startup "\
148 "configurations from Netconf interface\n");
152 cmInetAddr((S8*)g_cfg.DU_IPV4_Addr, &ipv4_du);
153 cuCb.cuCfgParams.sctpParams.destCb[0].destIpAddr.ipV4Addr = ipv4_du;
154 cuCb.cuCfgParams.sctpParams.destCb[0].destIpAddr.ipV6Pres = false;
156 cmInetAddr((S8*)g_cfg.CU_IPV4_Addr, &ipv4_cu);
157 cuCb.cuCfgParams.sctpParams.localIpAddr.ipV4Addr = ipv4_cu;
158 cuCb.cuCfgParams.sctpParams.localIpAddr.ipV6Pres = false;
160 cuCb.cuCfgParams.sctpParams.destCb[0].destPort = g_cfg.DU_Port;
161 cuCb.cuCfgParams.sctpParams.f1SctpPort = g_cfg.CU_Port;
162 cuCb.cuCfgParams.sctpParams.numDestNode = 1;
164 cuCb.cuCfgParams.egtpParams.localIp.ipV4Pres = TRUE;
165 cuCb.cuCfgParams.egtpParams.localIp.ipV4Addr = ipv4_cu;
166 cuCb.cuCfgParams.egtpParams.localPort = F1_EGTP_PORT;
167 cuCb.cuCfgParams.egtpParams.dstCfg[0].dstIp.ipV4Pres = TRUE;
168 cuCb.cuCfgParams.egtpParams.dstCfg[0].dstIp.ipV4Addr = ipv4_du;
169 cuCb.cuCfgParams.egtpParams.dstCfg[0].dstPort = F1_EGTP_PORT;
170 cuCb.cuCfgParams.egtpParams.minTunnelId = MIN_TEID;
171 cuCb.cuCfgParams.egtpParams.currTunnelId = cuCb.cuCfgParams.egtpParams.minTunnelId;
172 cuCb.cuCfgParams.egtpParams.maxTunnelId = MAX_TEID;
173 cuCb.cuCfgParams.egtpParams.numDu = 1;
176 /* CU IP Address and Port*/
177 memset(&ipv4_du, 0, sizeof(uint32_t));
178 cmInetAddr((S8*)LOCAL_IP_CU, &ipv4_cu);
180 cuCb.cuCfgParams.sctpParams.localIpAddr.ipV4Addr = ipv4_cu;
181 cuCb.cuCfgParams.sctpParams.localIpAddr.ipV6Pres = false;
183 /* SCTP and EGTP configuration for F1 Interface */
184 cuCb.cuCfgParams.sctpParams.f1SctpInfo.port = F1_SCTP_PORT;
186 cuCb.cuCfgParams.egtpParams.localIp.ipV4Pres = TRUE;
187 cuCb.cuCfgParams.egtpParams.localIp.ipV4Addr = ipv4_cu;
188 cuCb.cuCfgParams.egtpParams.localPort = F1_EGTP_PORT;
190 cuCb.cuCfgParams.sctpParams.f1SctpInfo.numDestNode = 0;
191 cuCb.cuCfgParams.egtpParams.numDu = 0;
194 while(numDu < NUM_F1_ASSOC)
197 memset(&ipv4_du, 0, sizeof(uint32_t));
198 cmInetAddr((S8*)REMOTE_IP_DU[numDu], &ipv4_du);
200 /* SCTP Parameters */
201 cuCb.cuCfgParams.sctpParams.f1SctpInfo.destCb[numDu].destIpAddr.ipV4Addr = ipv4_du;
202 cuCb.cuCfgParams.sctpParams.f1SctpInfo.destCb[numDu].destIpAddr.ipV6Pres = false;
203 cuCb.cuCfgParams.sctpParams.f1SctpInfo.destCb[numDu].destPort = F1_SCTP_PORT;
205 /* EGTP Parameters */
206 cuCb.cuCfgParams.egtpParams.dstCfg[numDu].dstIp.ipV4Pres = TRUE;
207 cuCb.cuCfgParams.egtpParams.dstCfg[numDu].dstIp.ipV4Addr = ipv4_du;
208 cuCb.cuCfgParams.egtpParams.dstCfg[numDu].dstPort = F1_EGTP_PORT;
213 cuCb.cuCfgParams.egtpParams.minTunnelId = MIN_TEID;
214 cuCb.cuCfgParams.egtpParams.currTunnelId = cuCb.cuCfgParams.egtpParams.minTunnelId;
215 cuCb.cuCfgParams.egtpParams.maxTunnelId = MAX_TEID;
216 cuCb.cuCfgParams.egtpParams.numDu = numDu;
217 cuCb.cuCfgParams.sctpParams.f1SctpInfo.numDestNode = numDu;
219 /* SCTP configuration for Xn interface */
220 cuCb.cuCfgParams.sctpParams.xnSctpInfo.port = XN_SCTP_PORT;
221 cuCb.cuCfgParams.sctpParams.xnSctpInfo.localNodeType = LOCAL_NODE_TYPE;
222 numRemoteCu = &cuCb.cuCfgParams.sctpParams.xnSctpInfo.numDestNode;
224 while((*numRemoteCu) < NUM_XN_ASSOC)
226 /* Remote CU IP address */
227 memset(&ipv4_remote_cu, 0, sizeof(uint32_t));
228 cmInetAddr((S8*)REMOTE_IP_CU[*numRemoteCu], &ipv4_remote_cu);
230 /* SCTP Parameters */
231 cuCb.cuCfgParams.sctpParams.xnSctpInfo.destCb[*numRemoteCu].destIpAddr.ipV4Addr = ipv4_remote_cu;
232 cuCb.cuCfgParams.sctpParams.xnSctpInfo.destCb[*numRemoteCu].destIpAddr.ipV6Pres = false;
233 cuCb.cuCfgParams.sctpParams.xnSctpInfo.destCb[*numRemoteCu].destPort = XN_SCTP_PORT;
240 cuCb.cuCfgParams.plmn.mcc[0] = PLMN_MCC0;
241 cuCb.cuCfgParams.plmn.mcc[1] = PLMN_MCC1;
242 cuCb.cuCfgParams.plmn.mcc[2] = PLMN_MCC2;
243 cuCb.cuCfgParams.plmn.mnc[0] = PLMN_MNC0;
244 cuCb.cuCfgParams.plmn.mnc[1] = PLMN_MNC1;
245 cuCb.cuCfgParams.plmn.mnc[2] = PLMN_MNC2;
248 cuCb.cuCfgParams.rrcVersion.rrcVer = RRC_VER;
249 cuCb.cuCfgParams.rrcVersion.extRrcVer = EXT_RRC_VER;
253 } /* End of readCuCfg */
255 /*******************************************************************
257 * @brief Initiates inter DU handover
261 * Function : initiateInterDuHandover
263 * Functionality: Initiates the first procedure of inter-DU
264 * handover i.eG GNB-DU configuration query to source DU
266 * @params[in] Source DU Id
268 * UE Id to be handed off
269 * @return ROK - success
272 * ****************************************************************/
273 void initiateInterDuHandover(uint32_t sourceDuId, uint32_t targetDuId, uint32_t ueId)
277 CuUeCb *ueCb = NULLP;
279 SEARCH_DU_DB(duIdx, sourceDuId, duDb);
281 ueCb = &duDb->ueCb[ueId-1];
284 ueCb->state = UE_HANDOVER_IN_PROGRESS;
285 ueCb->hoInfo.sourceDuId = sourceDuId;
286 ueCb->hoInfo.targetDuId = targetDuId;
289 DU_LOG("\nINFO --> CU_STUB: Inter-DU Handover Started for ueId [%d] from DU ID [%d] to DU ID [%d]", \
290 ueId, sourceDuId, targetDuId);
291 BuildAndSendUeContextModificationReq(sourceDuId, ueCb, QUERY_CONFIG);
295 /*******************************************************************
297 * @brief Initiates inter CU handover
301 * Function : initiateInterCuHandover
303 * Functionality: Initiates the first procedure of inter-CU
306 * @params[in] Source CU Id
308 * UE Id to be handed off
309 * @return ROK - success
312 * ****************************************************************/
313 void initiateInterCuHandover(uint32_t sourceCuId, uint32_t targetCuId, uint32_t ueId)
315 DU_LOG("\nINFO --> CU_STUB: Inter-CU Handover Started for ueId [%d] from CU ID [%d] to CU ID [%d]", \
316 ueId, sourceCuId, targetCuId);
317 //TODO : First message of HO procedure to be triggered here. Changes to be done in next commit.
320 /*******************************************************************
322 * @brief start Dl data
326 * Function : startDlData
328 * Functionality: start the downlink data
331 * @return ROK - success
334 * ****************************************************************/
336 uint8_t startDlData()
342 int32_t totalNumOfTestFlow = 20;
343 EgtpTeIdCb *teidCb = NULLP;
345 while(totalNumOfTestFlow)
347 for(duId = 1; duId <= cuCb.cuCfgParams.egtpParams.numDu; duId++)
349 for(teId = 1; teId <= NUM_TUNNEL_TO_PUMP_DATA; teId++)
352 cmHashListFind(&(egtpCb.dstCb[duId-1].teIdLst), (uint8_t *)&(teId), sizeof(uint32_t), 0, (PTR *)&teidCb);
356 DU_LOG("\nDEBUG --> EGTP: Sending DL User Data(duId %d, teId:%d)\n", duId, teId);
357 while(cnt < NUM_DL_PACKETS)
359 ret = cuEgtpDatReq(duId, teId);
362 DU_LOG("\nERROR --> EGTP: Issue with teid=%d\n",teId);
365 /* TODO : sleep(1) will be removed later once we will be able to
366 * support the continuous data pack transfer */
373 DU_LOG("\nDEBUG --> EGTP: TunnelId Not Found for (duId %d, teId:%d)\n", duId, teId);
377 totalNumOfTestFlow--;
383 /*******************************************************************
385 * @brief Handles Console input
389 * Function : cuConsoleHandler
391 * Functionality: Handles Console input
394 * @return ROK - success
397 * ****************************************************************/
398 void *cuConsoleHandler(void *args)
405 /* Send DL user data to CU when user enters 'd' on console */
409 /* Change #if 0 to #if 1 to take input from user */
411 DU_LOG("\n EGTP --> : Enter TEID id(1..10) where DL Data to be sent\n");
414 if(teId > MAX_TEID || teId < MIN_TEID)
416 DU_LOG("\nERROR --> EGTP : TEID(%x) OUT Of Range",teId);
420 /* Start Pumping data from CU to DU */
421 DU_LOG("\nDEBUG --> EGTP: Sending DL User Data(teId:%d)\n",teId);
424 while(cnt < NUM_DL_PACKETS)
426 ret = cuEgtpDatReq(teId);
429 DU_LOG("\nERROR --> EGTP: Issue with teid=%d\n",teId);
436 /* This variable is taken for sending specific number of downlink data packet.
437 * Presently the code is supporting total 4500 data packets trasfer for 3 UEs only with sleep(1).
438 * If you wants to pump data for 3 UE change the following macro values
439 * NUM_TUNNEL_TO_PUMP_DATA = 9, NUM_DL_PACKETS = 1.
440 * totalDataPacket = totalNumOfTestFlow * NUM_TUNNEL_TO_PUMP_DATA * NUM_DL_PACKETS
441 * totalDataPacket = [500*9*1] */
448 /* Start Handover procedure towards DU when 'h' is received from console input */
452 uint32_t sourceId, targetId, ueId;
454 DU_LOG("\n\nChoose the type of handover to initiate : \nEnter 1 for Inter-CU Handover over Xn interface\nEnter 2 for Inter-DU Handover\n");
455 scanf("%d", &hoType);
457 if(hoType == Xn_Based_Inter_CU_HO)
459 DU_LOG("\nEnter Source CU ID for Inter-CU Handover : ");
460 scanf("%d", &sourceId);
461 DU_LOG("\nEnter Target CU ID for Inter-CU Handover : ");
462 scanf("%d", &targetId);
463 DU_LOG("\nEnter CU UE F1AP ID to be handed over : ");
466 initiateInterCuHandover(sourceId, targetId, ueId);
468 else if(hoType == Inter_DU_HO)
470 DU_LOG("\nEnter Source DU ID for Inter-DU Handover : ");
471 scanf("%d", &sourceId);
472 DU_LOG("\nEnter Target DU ID for Inter-DU Handover : ");
473 scanf("%d", &targetId);
474 DU_LOG("\nEnter DU UE F1AP ID to be handed over : ");
477 initiateInterDuHandover(sourceId, targetId, ueId);
480 /* Start Idle mode paging when 'p' is received from console input */
486 DU_LOG("\nEnter DU ID on which this UE to be pagged");
488 DU_LOG("\nEnter 5g-S-TMSI");
489 scanf("%lu", &sTmsi);
491 if(BuildAndSendPagingMsg(sTmsi, duId) != ROK)
493 DU_LOG("\nERROR --> EGTP: Failed to build and send paging message for 5gsTmsi[%lu]\n", sTmsi);
503 CuUeCb *ueCb = NULLP;
505 DU_LOG("\nEnter DU ID whose UE has to be modified");
507 DU_LOG("\nEnter UE ID to be modified");
510 DU_LOG("\nINFO --> CU_STUB: UE Context Mod for ueId [%d] at DU ID [%d]", \
513 SEARCH_DU_DB(duIdx, duId, duDb);
516 ueCb = &duDb->ueCb[ueId-1];
517 BuildAndSendUeContextModificationReq(duId, ueCb, MODIFY_UE);
521 DU_LOG("ERROR --> DuDb is NULLP");
526 /*UE context release command from CU*/
529 uint32_t duId, cuUeF1apId, duUeF1apId;
533 DU_LOG("\nEnter DU ID on which UE has to be released");
535 DU_LOG("\nEnter UE ID to be released");
536 scanf("%d", &duUeF1apId);
538 SEARCH_DU_DB(duIdx, duId, duDb);
541 if(duDb->ueCb[duUeF1apId-1].gnbDuUeF1apId == duUeF1apId)
543 cuUeF1apId = duDb->ueCb[duUeF1apId-1].gnbCuUeF1apId;
544 DU_LOG("INFO --> CU_STUB: Cu UeId: %d Du UeId:%d",cuUeF1apId, duUeF1apId);
545 BuildAndSendUeContextReleaseCommand(duId, cuUeF1apId, duUeF1apId);
549 DU_LOG("ERROR --> CU_STUB: Du UeId:%d in UeCb mismatch",\
550 duDb->ueCb[duUeF1apId-1].gnbDuUeF1apId);
559 /**********************************************************************
561 **********************************************************************/