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 file contains message handling functionality for DU cell management */
20 #include "common_def.h"
28 #include "du_app_mac_inf.h"
29 #include "du_app_rlc_inf.h"
30 #include "du_e2ap_mgr.h"
34 #include "du_cell_mgr.h"
35 #include "PCCH-Config.h"
36 #include "PagingUE-Identity.h"
37 #include "PagingRecord.h"
38 #include "PagingRecordList.h"
39 #include "PagingRrc.h"
40 #include "PCCH-MessageType.h"
41 #include "PCCH-Message.h"
42 #include "odu_common_codec.h"
46 #include "AlarmInterface.h"
47 #include "CmInterface.h"
51 GConfiguration gConfigInfo;
52 DuMacCellDeleteReq packMacCellDeleteReqOpts[] =
54 packDuMacCellDeleteReq, /* Loose coupling */
55 MacProcCellDeleteReq, /* TIght coupling */
56 packDuMacCellDeleteReq /* Light weight-loose coupling */
59 DuMacDlPcchInd packMacDlPcchIndOpts[] =
61 packDuMacDlPcchInd, /* Loose coupling */
62 MacProcDlPcchInd, /* TIght coupling */
63 packDuMacDlPcchInd /* Light weight-loose coupling */
66 DuMacDlBroadcastReq packMacDlBroadcastReqOpts[] =
68 packDuMacDlBroadcastReq, /* Loose coupling */
69 MacProcDlBroadcastReq, /* TIght coupling */
70 packDuMacDlBroadcastReq /* Light weight-loose coupling */
72 /*******************************************************************
74 * @brief Processes cells to be activated
78 * Function : duProcCellsToBeActivated
81 * - Processes cells to be activated list received in F1SetupRsp
84 * @return ROK - success
87 * ****************************************************************/
88 uint8_t duProcCellsToBeActivated(uint8_t *plmnStr, uint16_t nci, uint16_t nRPci)
91 DuCellCb *cellCb = NULLP;
92 uint8_t cfgIdx, tmpPlmn[4];
94 for(cfgIdx=0; cfgIdx<duCb.numCfgCells; cfgIdx++)
96 memset(tmpPlmn, 0, 4);
97 buildPlmnId(duCb.cfgCellLst[cfgIdx]->cellInfo.nrEcgi.plmn, tmpPlmn);
98 if(duCb.cfgCellLst[cfgIdx]->cellInfo.nrEcgi.cellId == nci &&
99 (strcmp((const char*)tmpPlmn, (const char*)plmnStr) == 0))
101 cellCb = duCb.cfgCellLst[cfgIdx];
106 DU_LOG("\nERROR --> DU APP : No Cell found for NCI %d", nci);
111 cellCb->cellStatus = ACTIVATION_IN_PROGRESS;
112 cellCb->cellInfo.nrPci = nRPci;
114 if((cmHashListInit(&(cellCb->pagingInfoMap), MAX_SFN, sizeof(DuPagInfoList),\
115 FALSE, CM_HASH_KEYTYPE_CONID, DU_APP_MEM_REGION, DU_POOL)) != ROK)
117 DU_LOG("ERROR --> DU APP: Failed to Initialize the Paging Hash Map");
120 duCb.actvCellLst[cellCb->cellId -1] = cellCb;
123 if(duBuildAndSendMacCellCfg(cellCb->cellId) != ROK)
125 DU_LOG("\nERROR --> DU APP : macCellCfg build and send failed");
126 /* Delete cell from actvCellList */
127 duCb.actvCellLst[cellCb->cellId -1] = NULLP;
128 --(duCb.numActvCells);
134 /*******************************************************************
136 * @brief Handles DU F1Setup Rsp received in F1AP
140 * Function : duProcF1SetupRsp
143 * - Handles DU F1Setup Rsp received in F1AP
145 * @params[in] Pointer to F1SetupRsp
148 ******************************************************************/
149 void duProcF1SetupRsp()
151 DU_LOG("\nINFO --> DU_APP : F1 Setup Response received");
152 duCb.f1Status = TRUE; //Set F1 status as true
155 /*******************************************************************
157 * @brief Returns cellCb based on cell ID
161 * Function : duGetCellCb
163 * Functionality: Returns DU APP CellCb based on cell ID
165 * @params[in] F1AP_PDU_t ASN decoded F1AP message
166 * @return ROK - success
169 * ****************************************************************/
170 uint8_t duGetCellCb(uint16_t cellId, DuCellCb **cellCb)
174 for(cellIdx=0; cellIdx < MAX_NUM_CELL; cellIdx++)
176 if(duCb.actvCellLst[cellIdx] && (duCb.actvCellLst[cellIdx]->cellId == cellId))
178 *cellCb = duCb.actvCellLst[cellIdx];
185 DU_LOG("\nERROR --> DU APP : Cell Id %d not found in DU APP", cellId);
192 /******************************************************************************
193 * @brief Check Paging Record for a Particular Paging Frame
197 * Function : checkPagingRecord
200 * Check Paging Record for a Particular Paging Frame
202 * @params[in] DuCellCb *cellCb
204 * @return ROK/RFAILURE (uint8_t return)
207 ******************************************************************************/
208 uint8_t checkPagingRecord(DuCellCb *cellCb)
211 DuPagInfoList *pagInfoLLFromPF = NULLP;
212 DuPagUeList *pagInfo = NULLP;
214 /*DUAPP may send PagingReq to MAC for future SFN so that Schedular can
215 * schedule Paging on the exact occurence of the Slot.*/
216 pf = (cellCb->currSlotInfo.sfn + PAGING_SCHED_DELTA) % MAX_SFN;
218 pagInfoLLFromPF = findPagingInfoFromMap(pf, &(cellCb->pagingInfoMap));
219 if(pagInfoLLFromPF == NULLP)
221 /*No Page is present for pf thus exiting*/
227 pagInfo = handlePageInfoLL(pf, NULLD, &(pagInfoLLFromPF->pagInfoList), TRAVERSE_ALL);
230 if(BuildAndSendDlPcchIndToMac(cellCb->cellId, pf, pagInfo->i_s, &(pagInfo->pagUeList)) != ROK)
232 DU_LOG("\nERROR --> DU APP: Issue in Building Page RRC PDU i_s:%d",pagInfo->i_s);
235 handlePageInfoLL(pf, pagInfo->i_s, &(pagInfoLLFromPF->pagInfoList), DELETE);
237 if(pagInfoLLFromPF->pagInfoList.first == NULLP)
241 }while(pagInfo != NULLP);
243 cmHashListDelete(&(cellCb->pagingInfoMap), (PTR)pagInfoLLFromPF);
244 DU_FREE(pagInfoLLFromPF, sizeof(DuPagInfoList));
248 /******************************************************************
250 * @brief Send pcch indication to MAC
254 * Function : sendDlPcchIndToMac
256 * Functionality: Send pcch indication to MAC
258 * @Params[in] DlPcchInd *pcchInd
259 * @return ROK - success
262 * ****************************************************************/
264 uint8_t sendDlPcchIndToMac(DlPcchInd *pcchInd)
272 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_DL_PCCH_IND);
274 ret = (*packMacDlPcchIndOpts[pst.selector])(&pst, pcchInd);
277 DU_LOG("\nERROR --> DU APP : sendDlPcchIndToMac(): Failed to DL PCCH indication to MAC");
282 DU_LOG("\nERROR --> DU APP: sendDlPcchIndToMac(): Received pcchInd is NULLP");
289 /*****************************************************************
290 * @brief Handles slot indication from MAC
294 * Function : duHandleSlotInd
297 * Handles slot indication from MAC
299 * @params[in] Post structure pointer
300 * SlotTimingInfo *slotIndInfo
301 * @return ROK - success
305 *****************************************************************/
306 uint8_t duHandleSlotInd(Pst *pst, SlotTimingInfo *slotIndInfo)
308 uint8_t cellIdx = 0, ret = ROK;
309 DuCellCb *duCellCb = NULLP;
313 GET_CELL_IDX(slotIndInfo->cellId, cellIdx);
314 duCellCb = duCb.actvCellLst[cellIdx];
318 duCellCb->currSlotInfo.sfn = slotIndInfo->sfn;
319 duCellCb->currSlotInfo.slot = slotIndInfo->slot;
320 checkPagingRecord(duCellCb);
324 DU_LOG("\nERROR --> DU APP : CellId[%d] doesnot exist", slotIndInfo->cellId);
327 DU_FREE_SHRABL_BUF(pst->region, pst->pool, slotIndInfo, sizeof(SlotTimingInfo));
331 DU_LOG("\nERROR --> DU APP : Recevied null pointer from MAC");
336 /*******************************************************************
338 * @brief Handles cell up indication from MAC
342 * Function : duHandleCellUpInd
345 * Handles cell up indication from MAC
347 * @params[in] Post structure pointer
349 * @return ROK - success
352 * ****************************************************************/
353 uint8_t duHandleCellUpInd(Pst *pst, OduCellId *cellId)
355 DuCellCb *cellCb = NULLP;
357 if(cellId->cellId <=0 || cellId->cellId > MAX_NUM_CELL)
359 DU_LOG("\nERROR --> DU APP : Invalid Cell Id %d in duHandleCellUpInd()", cellId->cellId);
363 if(duGetCellCb(cellId->cellId, &cellCb) != ROK)
366 if((cellCb != NULL) && (cellCb->cellStatus == ACTIVATION_IN_PROGRESS))
368 DU_LOG("\nINFO --> DU APP : 5G-NR Cell %d is UP", cellId->cellId);
369 cellCb->cellStatus = ACTIVATED;
370 gConfigInfo.gCellStatus = CELL_UP;
372 if(duCfgParam.tempSliceCfg.numOfRrmPolicy)
373 BuildAndSendSliceConfigReq();
375 DU_LOG("\nINFO --> DU APP : Raise cell UP alarm for cell id=%d", cellId->cellId);
376 raiseCellAlrm(CELL_UP_ALARM_ID, cellId->cellId);
377 setCellOpState(cellId->cellId, ENABLED, ACTIVE);
379 duCfgParam.macCellCfg.cellCfg.opState = OP_ENABLED;
380 duCfgParam.macCellCfg.cellCfg.cellState = CELL_ACTIVE;
383 if((pst->selector == ODU_SELECTOR_LWLC) || (pst->selector == ODU_SELECTOR_TC))
384 DU_FREE_SHRABL_BUF(pst->region, pst->pool, cellId, sizeof(OduCellId));
388 /*******************************************************************
390 * @brief Handle Cell delete response from MAC
394 * Function : DuProcMacCellDeleteRsp
396 * Functionality: Handle Cell delete response from MAC
398 * @params[in] Pointer to MacCellDeleteRsp and Pst
399 * @return ROK - success
402 * ****************************************************************/
404 uint8_t DuProcMacCellDeleteRsp(Pst *pst, MacCellDeleteRsp *deleteRsp)
407 uint16_t cellIdx=0, pfIdx=0;
408 DuPagInfoList *pagInfoLLFromPF=NULLP;
412 if(deleteRsp->status == SUCCESSFUL)
414 GET_CELL_IDX(deleteRsp->cellId, cellIdx);
415 DU_LOG("\nINFO --> DU APP : MAC CELL Delete Response : SUCCESS [CELL IDX : %d]", deleteRsp->cellId);
416 if(duCb.actvCellLst[cellIdx] && (duCb.actvCellLst[cellIdx]->cellId == deleteRsp->cellId))
418 for(pfIdx =0; pfIdx < MAX_SFN; pfIdx++)
420 pagInfoLLFromPF = findPagingInfoFromMap(pfIdx, &(duCb.actvCellLst[cellIdx]->pagingInfoMap));
423 cmHashListDelete(&(duCb.actvCellLst[cellIdx]->pagingInfoMap), (PTR)pagInfoLLFromPF);
424 DU_FREE(pagInfoLLFromPF, sizeof(DuPagInfoList));
428 memset(duCb.actvCellLst[cellIdx], 0, sizeof(DuCellCb));
429 gConfigInfo.gCellStatus = CELL_DOWN;
432 DU_LOG("\nINFO --> DU APP : Raise cell down alarm for cell id=%d", deleteRsp->cellId);
433 raiseCellAlrm(CELL_DOWN_ALARM_ID, deleteRsp->cellId);
434 setCellOpState(deleteRsp->cellId, DISABLED, INACTIVE);
439 DU_FREE(duCb.actvCellLst[cellIdx], sizeof(DuCellCb));
443 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): CellId [%d] doesnot exist", deleteRsp->cellId);
449 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): MAC CELL Delete Response : FAILED\
450 [CELL IDX : %d]", deleteRsp->cellId);
453 DU_FREE_SHRABL_BUF(pst->region, pst->pool, deleteRsp, sizeof(MacCellDeleteRsp));
457 DU_LOG("\nERROR --> DU APP : DuProcMacCellDeleteRsp(): Received MAC cell delete response is NULL");
463 /*******************************************************************
465 * @brief Sending Cell Delete Req To Mac
469 * Function : sendCellDeleteReqToMac
472 * sending Cell Delete Req To Mac
474 * @params[in] uint16_t cellId
475 * @return ROK - success
479 *****************************************************************/
481 uint8_t sendCellDeleteReqToMac(uint16_t cellId)
485 MacCellDeleteReq *cellDelete = NULLP;
487 DU_ALLOC_SHRABL_BUF(cellDelete, sizeof(MacCellDeleteReq));
490 cellDelete->cellId = cellId;
491 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_CELL_DELETE_REQ);
493 DU_LOG("\nINFO --> DU APP : Sending Cell Delete Request to MAC");
494 /* Processing one Cell at a time to MAC */
495 ret = (*packMacCellDeleteReqOpts[pst.selector])(&pst, cellDelete);
498 DU_LOG("\nERROR --> DU APP : sendCellDeleteReqToMac(): Failed to send Cell delete Req to MAC");
499 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, cellDelete, sizeof(MacCellDeleteReq));
504 DU_LOG("\nERROR --> DU APP : sendCellDeleteReqToMac(): Failed to allocate memory");
510 /*******************************************************************
512 * @brief DU preocess Cell Delete Req to MAC
516 * Function : duSendCellDeletReq
518 * Functionality: DU process Cell Delete Req to MAC
520 * @params[in] uint16_t cellId
521 * @return ROK - success
524 * ****************************************************************/
526 uint8_t duSendCellDeletReq(uint16_t cellId)
528 uint16_t cellIdx = 0;
529 DU_LOG("\nINFO --> DU APP : Processing Cell Delete Request ");
530 GET_CELL_IDX(cellId, cellIdx);
532 if(duCb.actvCellLst[cellIdx] == NULLP)
534 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellId[%d] is not found", cellId);
538 if(duCb.actvCellLst[cellIdx]->cellId != cellId)
540 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellId[%d] is not found", cellId);
545 if(duCb.actvCellLst[cellIdx]->cellStatus != DELETION_IN_PROGRESS)
547 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): CellStatus[%d] of cellId[%d] is not correct.\
548 Expected CellStatus is DELETION_IN_PROGRESS",duCb.actvCellLst[cellIdx]->cellStatus, cellId);
552 if(duBuildAndSendMacCellStop(cellId) == RFAILED)
554 DU_LOG("\nERROR --> DU APP : duSendCellDeletReq(): Failed to build and send cell stop request to MAC for\
562 /*******************************************************************
563 * @brief Free PCCH PDU structure
567 * Function : freePcchPdu
569 * Functionality: Free PCCH PDU structure
571 * @params[in] PCCH_Message_t *pcchMsg
575 * ****************************************************************/
576 void freePcchPdu(PCCH_Message_t *pcchMsg)
578 PagingRrc_t *pagingMsg = NULLP;
579 uint8_t recordIdx = 0;
583 if(pcchMsg->message.choice.c1 != NULLP)
585 pagingMsg = pcchMsg->message.choice.c1->choice.paging;
586 if(pagingMsg != NULLP)
588 if(pagingMsg->pagingRecordList)
590 if(pagingMsg->pagingRecordList->list.array != NULLP)
592 for(recordIdx = 0; recordIdx < pagingMsg->pagingRecordList->list.count; recordIdx++)
594 if(pagingMsg->pagingRecordList->list.array[recordIdx] != NULLP)
596 DU_FREE(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf,\
597 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size);
598 DU_FREE(pagingMsg->pagingRecordList->list.array[recordIdx], sizeof(PagingRecord_t));
601 DU_FREE(pagingMsg->pagingRecordList->list.array, pagingMsg->pagingRecordList->list.size);
603 DU_FREE(pagingMsg->pagingRecordList, sizeof(PagingRecordList_t));
605 DU_FREE(pcchMsg->message.choice.c1->choice.paging, sizeof(PagingRrc_t));
607 DU_FREE(pcchMsg->message.choice.c1 , sizeof(PCCH_MessageType_t));
609 DU_FREE(pcchMsg , sizeof(PCCH_Message_t));
613 /*******************************************************************
614 * @brief Builds the Pcch RRC PDU and forwards it to MAC
618 * Function : BuildAndSendDlPcchIndToMac
620 * Functionality: Builds the Pcch RRC PDU[As per Spec 38.331, Annexure A]
621 * and forwards it to MAC as Buffer along with PF and i_s
623 * @params[in] uint16_t cellId, uint16_t pf, uint8_t i_s,CmLListCp *pageUeLL
625 * @return ROK - success
628 * ****************************************************************/
629 uint8_t BuildAndSendDlPcchIndToMac(uint16_t cellId, uint16_t pf, uint8_t i_s, CmLListCp *pageUeLL)
631 CmLList *node = NULLP, *next = NULLP;
632 DuPagUeRecord *ueRecord = NULLP;
633 PCCH_Message_t *pcchMsg = NULLP;
634 asn_enc_rval_t encRetVal;
635 PagingRrc_t *pagingMsg = NULLP;
636 DlPcchInd *macPcchInd = NULLP;
637 uint8_t recordIdx = 0, ret = RFAILED;
639 /*As per 38.473 Sec 9.3.1.39,5G-S-TMSI :48 Bits >> Bytes and 0 UnusedBits */
640 uint8_t totalByteInTmsi = 6, unusedBitsInTmsi = 0;
642 if(pageUeLL == NULLP || pageUeLL->count == 0)
644 DU_LOG("\nERROR --> DU APP: UE Page Record LL is empty");
650 memset(&encRetVal, 0, sizeof(asn_enc_rval_t));
651 DU_ALLOC(pcchMsg , sizeof(PCCH_Message_t));
654 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(): (pccchMsg) Memory Alloction failed!");
657 pcchMsg->message.present = PCCH_MessageType_PR_c1;
658 DU_ALLOC(pcchMsg->message.choice.c1 , sizeof(PCCH_MessageType_t));
659 if(pcchMsg->message.choice.c1 == NULLP)
661 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (C1) Memory Alloction failed!");
664 pcchMsg->message.choice.c1->present = PCCH_MessageType__c1_PR_paging;
665 DU_ALLOC(pcchMsg->message.choice.c1->choice.paging, sizeof(PagingRrc_t));
667 pagingMsg = pcchMsg->message.choice.c1->choice.paging;
668 if(pagingMsg == NULLP)
670 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Paging) Memory Alloction failed!");
673 DU_ALLOC(pagingMsg->pagingRecordList, sizeof(PagingRecordList_t));
674 if(pagingMsg->pagingRecordList == NULLP)
676 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Paging Record List) Memory Alloction failed!");
680 pagingMsg->pagingRecordList->list.count = pageUeLL->count;
682 /*As per Spec 38.331, maxNrofPageRec : 32 [Maximum number of page records]*/
683 if(pageUeLL->count > MAX_PAGING_UE_RECORDS)
685 pagingMsg->pagingRecordList->list.count = MAX_PAGING_UE_RECORDS;
688 pagingMsg->pagingRecordList->list.size = pageUeLL->count * (sizeof(PagingRecord_t *));
689 DU_ALLOC(pagingMsg->pagingRecordList->list.array, pagingMsg->pagingRecordList->list.size);
690 if(pagingMsg->pagingRecordList->list.array == NULLP)
692 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Array) Memory Alloction failed!");
695 for(recordIdx = 0; recordIdx < pageUeLL->count; recordIdx++)
697 DU_ALLOC(pagingMsg->pagingRecordList->list.array[recordIdx], sizeof(PagingRecord_t));
698 if(pagingMsg->pagingRecordList->list.array[recordIdx] == NULLP)
700 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (Record) Memory Alloction failed!");
705 node = pageUeLL->first;
706 while(node && (recordIdx < MAX_PAGING_UE_RECORDS))
709 ueRecord = (DuPagUeRecord *)node->node;
712 /*TODO : When Connected Mode Paging will be supported then I_RNTI will be introduced*/
713 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.present = PagingUE_Identity_PR_ng_5G_S_TMSI;
714 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size = totalByteInTmsi*sizeof(uint8_t);
715 DU_ALLOC(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf,\
716 pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.size);
717 if(pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI.buf == NULLP)
719 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (5gsTmsi buffer) Memory Allocation failed!");
722 fillBitString(&pagingMsg->pagingRecordList->list.array[recordIdx]->ue_Identity.choice.ng_5G_S_TMSI,\
723 unusedBitsInTmsi, totalByteInTmsi, ueRecord->sTmsi);
727 if(duDelNodeFromLList(pageUeLL, node) == ROK)
728 DU_FREE(ueRecord, sizeof(DuPagUeRecord));
731 if(node != NULLP && (recordIdx < MAX_PAGING_UE_RECORDS))
733 /*This leg is hit because Whole UE REcord List was not traversed as
734 * some issue happened thus exiting the main while*/
737 xer_fprint(stdout, &asn_DEF_PCCH_Message, pcchMsg);
738 memset(encBuf, 0, ENC_BUF_MAX_LEN);
740 /* Encode the PCCH RRC PDU as APER */
741 encRetVal = uper_encode(&asn_DEF_PCCH_Message, 0, pcchMsg, PrepFinalEncBuf,\
744 if(encRetVal.encoded == ENCODE_FAIL)
746 DU_LOG("\nERROR --> F1AP : Could not encode Paging structure (at %s)\n",\
747 encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
752 DU_LOG("\nDEBUG --> F1AP : Created APER encoded buffer for RRC PDU for Pcch indication \n");
754 DU_ALLOC_SHRABL_BUF(macPcchInd, sizeof(DlPcchInd));
755 if(macPcchInd == NULLP)
757 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (macPcchInd) Memory Alloction failed!");
761 macPcchInd->cellId = cellId;
763 macPcchInd->i_s = i_s;
764 macPcchInd->pduLen = encBufSize;
765 DU_ALLOC_SHRABL_BUF(macPcchInd->pcchPdu, macPcchInd->pduLen);
766 if(macPcchInd->pcchPdu == NULLP)
768 DU_LOG("\nERROR --> DU APP: BuildAndSendDlPcchIndToMac(); (PcchPDU) Memory Alloction failed!");
771 memcpy(macPcchInd->pcchPdu, encBuf, macPcchInd->pduLen);
772 ret = sendDlPcchIndToMac(macPcchInd);
775 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, macPcchInd->pcchPdu, macPcchInd->pduLen);
776 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, macPcchInd, sizeof(DlPcchInd));
783 freePcchPdu(pcchMsg);
787 /*******************************************************************
788 * @brief Keeping the record of Paging having a particular SFN and index associated
792 * Function : insertPagingRecord
794 * Functionality: Insert record of Paging assoc with particular SFN and index associated
796 * @params[in] DuCellCb* cellCb, uint16_t iterations
797 * DuPagingMsg rcvdF1apPagingParam
799 * @return ROK - success
802 * ****************************************************************/
803 uint8_t insertPagingRecord(DuCellCb* cellCb, DuPagingMsg *rcvdF1apPagingParam, uint16_t iterations)
805 uint16_t maxIterations = 0;
806 DuPagInfoList *pagInfoLLFromPF = NULLP;
807 DuPagUeList *pageUeLL = NULLP;
808 DuPagUeRecord *ueRecord = NULLP;
811 printPageList(&(cellCb->pagingInfoMap));
814 /*MAX Iteration : A UE can be paged at every T frames thus MAX determines
815 *how many Paging Frame(s) can be considered for Paging this UE*/
816 maxIterations = MAX_SFN/rcvdF1apPagingParam->T;
817 if(iterations >= maxIterations)
819 DU_LOG("\nERROR --> DU APP: MAX Iterations reached for UEID:%d, thus Paging is dropped!", rcvdF1apPagingParam->pagUeId);
823 /*[Step1]: Extracting the PF from the HasMap between PF and PagingInfoList*/
824 pagInfoLLFromPF = findPagingInfoFromMap(rcvdF1apPagingParam->pagingFrame, &(cellCb->pagingInfoMap));
825 if(pagInfoLLFromPF != NULLP)
827 /*[Step2]: Extracting the PageInfo List for the Paging Indices(i_s)*/
828 pageUeLL = handlePageInfoLL(rcvdF1apPagingParam->pagingFrame, rcvdF1apPagingParam->i_s, \
829 &(pagInfoLLFromPF->pagInfoList), CREATE);
831 if(pageUeLL != NULLP)
833 /*[Step3]: Check whether MAX UE Record against this PF and i_s has reached(Spec 38.331, Annexure A)*/
834 if(pageUeLL->pagUeList.count < MAX_PAGING_UE_RECORDS)
836 /*[Step4]: Insert the Paging Record to the end of the UE record List*/
837 ueRecord = handlePageUeLL(rcvdF1apPagingParam->pagUeId, rcvdF1apPagingParam->sTmsi,\
838 &(pageUeLL->pagUeList), CREATE);
840 if(ueRecord == NULLP)
842 DU_LOG("\nERROR --> DU APP: Unable to create UE Record in PagingList");
845 DU_LOG("\nDEBUG --> DU APP: UE Record created successfully in PagingList");
850 /*Since MAX Page record has reached for this PF thus calculating and
851 *moving this UE to next Paging Cycle*/
852 DU_LOG("\nINFO --> DU APP: Max Page Record reached for PagingFrame:%d",rcvdF1apPagingParam->pagingFrame);
853 rcvdF1apPagingParam->pagingFrame = ((rcvdF1apPagingParam->pagingFrame + rcvdF1apPagingParam->T) % MAX_SFN);
856 return insertPagingRecord(cellCb, rcvdF1apPagingParam, iterations);
860 /*Reaching here means that PF has no entry in the PageLists,
861 *Thus creating, Updating and inseritng the Paging Map, List and UE record.*/
863 DU_ALLOC(pagInfoLLFromPF, sizeof(DuPagInfoList));
865 if(pagInfoLLFromPF == NULLP)
867 DU_LOG("\nERROR --> DU APP: PageInfo Map allocation failed.");
870 pagInfoLLFromPF->pf = rcvdF1apPagingParam->pagingFrame;
871 pageUeLL = handlePageInfoLL(rcvdF1apPagingParam->pagingFrame, rcvdF1apPagingParam->i_s, &(pagInfoLLFromPF->pagInfoList), CREATE);
872 ueRecord = handlePageUeLL(rcvdF1apPagingParam->pagUeId, rcvdF1apPagingParam->sTmsi, &(pageUeLL->pagUeList), CREATE);
873 if(cmHashListInsert(&(cellCb->pagingInfoMap), (PTR)pagInfoLLFromPF, (uint8_t *)&(pagInfoLLFromPF->pf), sizeof(uint16_t)) == RFAILED)
875 DU_LOG("\nERROR --> DU APP: Hash Map Insertion Failed for PF:%d.",rcvdF1apPagingParam->pagingFrame);
879 printPageList(&(cellCb->pagingInfoMap));
887 /*******************************************************************
888 * @brief Calculate and fill paging information of a UE belongs to a particular cell
892 * Function : calcAndFillPagingInfoInCellCb
894 * Functionality: Calculate PO and i_s and
895 * fill paging information of a UE in DuCellCb
897 * @params[in] DuCellCb* cellCb, uint8_t pagUeId,
898 * DuPagingMsg rcvdF1apPagingParam
900 * @return ROK - success
903 * ****************************************************************/
904 uint8_t calcAndFillPagingInfoInCellCb(DuCellCb* cellCb, DuPagingMsg *rcvdF1apPagingParam)
907 uint16_t T=0, N=0, pagingFrame = 0, n = 0;
908 uint16_t currentSfn = 0, sfn = 0, newSfn = 0;
913 /* calculate paging frame and paging offset */
914 duPcchCfg = duCfgParam.sib1Params.srvCellCfgCommSib.dlCfg.pcchCfg;
915 rcvdF1apPagingParam->pagingFrameOffset = duPcchCfg.pageFrameOffset;
919 * Fill the Value of T (DRX cycle of the UE)
920 * T = min(UE Specific DRX value allocated by upper layers, default DRX
921 * broadcast in System Information) */
922 if((rcvdF1apPagingParam->pagingDrxPres) && (duPcchCfg.dfltPagingCycle > rcvdF1apPagingParam->pagingDrx))
924 T = rcvdF1apPagingParam->pagingDrx;
928 T = duPcchCfg.dfltPagingCycle;
930 rcvdF1apPagingParam->T = T;
932 /* N= number of total paging frames in T */
934 switch(duPcchCfg.nAndPagingFrmOffsetType)
936 case PCCH_Config__nAndPagingFrameOffset_PR_oneT:
939 case PCCH_Config__nAndPagingFrameOffset_PR_halfT:
942 case PCCH_Config__nAndPagingFrameOffset_PR_quarterT:
945 case PCCH_Config__nAndPagingFrameOffset_PR_oneEighthT:
948 case PCCH_Config__nAndPagingFrameOffset_PR_oneSixteenthT:
956 /* calculate the Value of pagingFrame */
957 /*Refer: 38.304 Sec 7.1: (SFN + PF_offset) mod T = (T div N)*(UE_ID mod N)*/
958 //RHS of above formula
959 pagingFrame = (T / N) * ((rcvdF1apPagingParam->pagUeId) % N);
961 //LHS of above formula
964 pagingFrame = (pagingFrame - rcvdF1apPagingParam->pagingFrameOffset)%T;
966 else /*Paging Frame = 0 so thus PF will be calculated on Paging Cycle*/
968 pagingFrame = (T - rcvdF1apPagingParam->pagingFrameOffset)%T;
971 /*Paging Frame(SFN for Paging) has to be determined from current SFN. */
972 /*For eg: If T =128, PF(Calculated above) = 20; SFN can be 20,148,276,...
973 * If currSFN is running as 200 then (newSFN % T) == (T/N)*(UE_ID%N)
974 *Thus SFN at which paging has to be sent needs to be delayed and newSFN = 276*/
976 currentSfn = cellCb->currSlotInfo.sfn;
978 /*Multiplication Factor(x) to find the next best SFN to process paging*/
980 /*Below calculation will determine in which nth cycle of T (DRX cycle),new PF
981 * may fall(Delayed one)*/
982 if(currentSfn > pagingFrame)
984 n = ((currentSfn - pagingFrame) / T) + 1;
988 n = ((pagingFrame - currentSfn) / T) + 1;
991 newSfn = pagingFrame + T * n;
993 /*When pagingFrame is future from currSFN then pagingFrame will be used
994 * else pagingFrame is delayed thus newSFN will be used.*/
995 if(currentSfn <= pagingFrame)
997 if(pagingFrame > currentSfn + PAGING_SCHED_DELTA)
1009 if(newSfn > currentSfn + PAGING_SCHED_DELTA)
1013 else /*If newSFN is near to currSFN then delay it more by T*/
1015 newSfn = newSfn + T;
1019 rcvdF1apPagingParam->pagingFrame = (sfn % MAX_SFN);
1020 rcvdF1apPagingParam->i_s = ((uint32_t)(floor(rcvdF1apPagingParam->pagUeId / N)) % ns);
1022 memcpy(&cellCb->tmpPagingInfoOfUe, rcvdF1apPagingParam, sizeof(DuPagingMsg));
1026 DU_LOG("\nINFO --> DU APP : calcAndFillPagingInfoInCellCb(): Received null pointer");
1032 /*******************************************************************
1033 * @brief Paging Processing on a particular cell
1037 * Function : processPagingMsg
1039 * Functionality: Process Paging on a particular cell
1041 * @params[in] uint16_t cellId
1042 * DuPagingMsg rcvdF1apPagingParam
1044 * @return ROK - success
1047 * ****************************************************************/
1048 uint8_t processPagingMsg(uint16_t cellId, DuPagingMsg *rcvdF1apPagingParam)
1050 uint16_t cellIdx = 0, iteration = 0;
1052 GET_CELL_IDX(cellId, cellIdx);
1054 if(duCb.actvCellLst[cellIdx] == NULLP || duCb.actvCellLst[cellIdx]->cellId != cellId)
1056 DU_LOG("\nERROR --> DU APP : processPagingMsg(): CellId[%d] is not found", cellId);
1060 if(calcAndFillPagingInfoInCellCb(duCb.actvCellLst[cellIdx], rcvdF1apPagingParam) != ROK)
1062 DU_LOG("\nERROR --> DU APP : CellCb:%d not present to fill UE Paging Information",cellId);
1065 if(insertPagingRecord(duCb.actvCellLst[cellIdx], rcvdF1apPagingParam, iteration) != ROK)
1067 DU_LOG("\nERROR --> DU APP : Insertion Failed ofUE Paging Information");
1074 /*******************************************************************
1076 * @brief DU build and send dl broacast req and send it to MAC
1080 * Function : duBuildAndSendDlBroadcastReq
1082 * Functionality: DU build and send dl broacast req and send to MAC
1085 * @params[in] cellId, crnti
1086 * @return ROK - success
1089 * ****************************************************************/
1091 uint8_t duBuildAndSendDlBroadcastReq()
1095 MacDlBroadcastReq *dlBroadcast=NULLP;
1097 DU_LOG("\nDEBUG --> DU_APP : Building Dl broadcast request");
1099 DU_ALLOC_SHRABL_BUF(dlBroadcast, sizeof(MacDlBroadcastReq));
1102 /*TODO - fill MAC DL Broadcast Request*/
1104 FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_DL_BROADCAST_REQ);
1106 DU_LOG("\nDEBUG --> DU_APP: Sending Dl broadcast Request to MAC ");
1107 ret = (*packMacDlBroadcastReqOpts[pst.selector])(&pst, dlBroadcast);
1110 DU_LOG("\nERROR --> DU_APP: sendDlBroadcastReqToMac(): Failed to send Dl broadcast Req to MAC");
1111 DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, dlBroadcast, sizeof(MacDlBroadcastReq));
1116 DU_LOG("\nERROR --> DU_APP: sendDlBroadcastReqToMac(): Failed to allocate memory");
1123 /**********************************************************************
1125 **********************************************************************/