[Epic-ID: ODUHIGH-406][Task-ID: ODUHIGH-422]F1AP Paging Message Handling at DUAPP
[o-du/l2.git] / src / du_app / du_f1ap_msg_hdl.c
index 7239243..a375dbc 100644 (file)
 #include "du_sys_info_hdl.h"
 #include "du_e2ap_msg_hdl.h"
 #include "du_f1ap_conversions.h"
+#include "CNUEPagingIdentity.h"
+#include "PCCH-Config.h"
 
 #ifdef O1_ENABLE
 #include "CmInterface.h"
@@ -5338,7 +5340,7 @@ uint8_t BuildBWPUlDedPucchCfg(PucchCfg *pucchCfgDb, PUCCH_Config_t *pucchCfg)
    /* Multi CSI */
    if(multiCsiDb && (multiCsiDb->multiCsiResrcListCount != 0))
    {
-      pucchCfg->multi_CSI_PUCCH_ResourceList == NULLP;
+      pucchCfg->multi_CSI_PUCCH_ResourceList = NULLP;
       DU_ALLOC(pucchCfg->multi_CSI_PUCCH_ResourceList, sizeof(struct PUCCH_Config__multi_CSI_PUCCH_ResourceList));
       if(pucchCfg->multi_CSI_PUCCH_ResourceList == NULLP)
       {
@@ -11917,7 +11919,8 @@ void freeAperDecodeF1UeContextSetupReq(UEContextSetupRequest_t   *ueSetReq)
  * ****************************************************************/
 uint8_t procF1UeContextSetupReq(F1AP_PDU_t *f1apMsg)
 {
-   uint8_t  ret=0, ieIdx=0, ieExtIdx = 0, ueIdx=0, cellIdx=0, servCellIdx = 0;
+   int8_t ueIdx = -1;
+   uint8_t  ret=0, ieIdx=0, ieExtIdx = 0, cellIdx=0, servCellIdx = 0;
    bool ueCbFound = false, hoInProgress = false;
    uint16_t nrCellId = 0;
    uint32_t gnbCuUeF1apId=0, gnbDuUeF1apId=0, bitRateSize=0;
@@ -12002,8 +12005,16 @@ uint8_t procF1UeContextSetupReq(F1AP_PDU_t *f1apMsg)
                /* If UE context is not present, but UE is in handover */
                if(!ueCbFound && hoInProgress)
                {
-                  gnbDuUeF1apId = genGnbDuUeF1apId(nrCellId);
-                  duUeCb = &duCb.actvCellLst[cellIdx]->hoUeCb[gnbDuUeF1apId -1];
+                  ueIdx = getFreeBitFromUeBitMap(nrCellId);
+                  if(ueIdx != -1)
+                     gnbDuUeF1apId = ueIdx +1;
+                  else
+                  {
+                     DU_LOG("\nERROR  -->  F1AP : No free UE IDX found in UE bit map of cell Id [%d]", nrCellId);
+                     ret = RFAILED;
+                     break;
+                  }
+                  duUeCb = &duCb.actvCellLst[cellIdx]->ueCb[ueIdx];
                   duUeCb->f1UeDb = NULL;
                   duUeCb->gnbCuUeF1apId = gnbCuUeF1apId;
                   duUeCb->gnbDuUeF1apId = gnbDuUeF1apId;
@@ -13625,16 +13636,20 @@ uint8_t duProcGnbDuCfgUpdAckMsg(uint8_t transId)
                            {
                               cellIdentity = &deleteItem->oldNRCGI.nRCellIdentity;
                               bitStringToInt(cellIdentity, &cellId);
+
+                              GET_CELL_IDX(cellId, cellIdx);
+                              if(duCb.actvCellLst[cellIdx] != NULLP)
+                              {
+                                 duCb.actvCellLst[cellId-1]->cellStatus = DELETION_IN_PROGRESS;
+                              }
                            }
                         }
                      }
 
-                     GET_CELL_IDX(cellId, cellIdx);
                      if(duCb.actvCellLst[cellIdx] != NULLP)
                      {
                         if(duCb.actvCellLst[cellIdx]->numActvUes == 0)
                         {
-                           duCb.actvCellLst[cellId-1]->cellStatus = DELETION_IN_PROGRESS;
                            ret = duSendCellDeletReq(cellId);
                            if(ret == RFAILED)
                            {
@@ -14311,6 +14326,8 @@ uint8_t BuildAndSendUeContextModRsp(DuUeCb *ueCb)
          ret = RFAILED;
          break;
       }
+
+      ret = ROK;
       break;
    }
    FreeUeContextModResp(f1apMsg);
@@ -14588,7 +14605,7 @@ void freeAperDecodeUeContextModificationReqMsg(UEContextModificationRequest_t *u
 uint8_t procF1UeContextModificationReq(F1AP_PDU_t *f1apMsg)
 {
    UEContextModificationRequest_t *ueContextModifyReq = NULLP;
-   uint8_t  ret = ROK, ieIdx = 0, cellIdx=0, ueIdx=0;
+   uint8_t  ret = ROK, ieIdx = 0, cellIdx=0;
    DuUeCb   *duUeCb = NULLP;
    DRBs_ToBeSetupMod_List_t *drbSetupModCfg;
    DRBs_ToBeModified_List_t *drbModifiedCfg;
@@ -14611,20 +14628,17 @@ uint8_t procF1UeContextModificationReq(F1AP_PDU_t *f1apMsg)
                {
                   if(duCb.actvCellLst[cellIdx])
                   {
-                     for(ueIdx = 0; ueIdx < duCb.actvCellLst[cellIdx]->numActvUes; ueIdx++)
+                     if((duCb.actvCellLst[cellIdx]->ueCb[gnbDuUeF1apId-1].gnbDuUeF1apId == gnbDuUeF1apId)&&\
+                           (duCb.actvCellLst[cellIdx]->ueCb[gnbDuUeF1apId-1].gnbCuUeF1apId == gnbCuUeF1apId))
                      {
-                        if((duCb.actvCellLst[cellIdx]->ueCb[ueIdx].gnbDuUeF1apId == gnbDuUeF1apId)&&\
-                              (duCb.actvCellLst[cellIdx]->ueCb[ueIdx].gnbCuUeF1apId == gnbCuUeF1apId))
+                        duUeCb = &duCb.actvCellLst[cellIdx]->ueCb[gnbDuUeF1apId-1];
+                        if(duUeCb->f1UeDb == NULLP)
                         {
-                           duUeCb = &duCb.actvCellLst[cellIdx]->ueCb[ueIdx];
-                           if(duUeCb->f1UeDb == NULLP)
-                           {
-                              DU_ALLOC(duUeCb->f1UeDb, sizeof(F1UeContextSetupDb));
-                              duUeCb->f1UeDb->cellIdx = cellIdx;
-                              duUeCb->f1UeDb->actionType = UE_CTXT_MOD;
-                           }
-                           break;
+                           DU_ALLOC(duUeCb->f1UeDb, sizeof(F1UeContextSetupDb));
+                           duUeCb->f1UeDb->cellIdx = cellIdx;
+                           duUeCb->f1UeDb->actionType = UE_CTXT_MOD;
                         }
+                        break;
                      }
                   }
                }
@@ -15098,9 +15112,9 @@ uint8_t BuildAndSendUeContextReleaseComplete(uint16_t cellId, uint32_t gnbCuUeF1
       break;
    }while(true);
    
-   if(ret == ROK && duCb.actvCellLst[cellId-1] && (duCb.actvCellLst[cellId-1]->numActvUes == 0))
+   if((ret == ROK) && (duCb.actvCellLst[cellId-1]) && (duCb.actvCellLst[cellId-1]->cellStatus == DELETION_IN_PROGRESS) 
+         && (duCb.actvCellLst[cellId-1]->numActvUes == 0))
    {
-      duCb.actvCellLst[cellId-1]->cellStatus = DELETION_IN_PROGRESS;
       ret = duSendCellDeletReq(cellId);
       if(ret != ROK)
       {
@@ -15296,6 +15310,226 @@ uint8_t procF1UeContextReleaseCommand(F1AP_PDU_t *f1apMsg)
    freeAperDecodeUeContextReleaseCommand(f1apMsg);
    return ret;
 }
+
+/**************************************************************
+ *
+ * @brief free the memory allocated by aper decoder for paging
+ *
+ * @details
+ *
+ *    Function : freeAperDecodePagingMsg
+ *
+ *    Functionality:
+ *         - free the memory allocated by aper decoder for
+ *         the paging f1ap msg
+ *
+ * @params[in] Paging_t   *paging
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ ****************************************************************/
+void freeAperDecodePagingMsg(Paging_t   *paging)
+{
+   uint8_t ieIdx, cellIdx;
+   PagingCell_ItemIEs_t *pagingCellItemIes;
+   PagingCell_Item_t *pagingCellItem;
+   PagingCell_list_t  *pagingCelllist;
+
+   if(paging)
+   {
+      if(paging->protocolIEs.list.array)
+      {
+         for(ieIdx=0 ; ieIdx<paging->protocolIEs.list.count; ieIdx++)
+         {
+            if(paging->protocolIEs.list.array[ieIdx])
+            {
+               switch(paging->protocolIEs.list.array[ieIdx]->id)
+               {
+                  case ProtocolIE_ID_id_UEIdentityIndexValue:
+                     {
+                        free(paging->protocolIEs.list.array[ieIdx]->value.choice.UEIdentityIndexValue.choice.indexLength10.buf);
+                        break;
+                     }
+                  case ProtocolIE_ID_id_PagingIdentity:
+                     {
+                        if(paging->protocolIEs.list.array[ieIdx]->value.choice.PagingIdentity.present == PagingIdentity_PR_cNUEPagingIdentity)
+                        {
+                           if(paging->protocolIEs.list.array[ieIdx]->value.choice.PagingIdentity.choice.cNUEPagingIdentity)
+                           {
+                              if(paging->protocolIEs.list.array[ieIdx]->value.choice.PagingIdentity.choice.cNUEPagingIdentity->present == \
+                                    CNUEPagingIdentity_PR_fiveG_S_TMSI)
+                              {
+                                 free(paging->protocolIEs.list.array[ieIdx]->value.choice.PagingIdentity.choice.cNUEPagingIdentity->choice.fiveG_S_TMSI.buf);
+                              }
+                              free(paging->protocolIEs.list.array[ieIdx]->value.choice.PagingIdentity.choice.cNUEPagingIdentity);
+                           }
+                        }
+                        break;
+                     }
+                  case ProtocolIE_ID_id_PagingCell_List:
+                     {
+                        pagingCelllist = &paging->protocolIEs.list.array[ieIdx]->value.choice.PagingCell_list;
+                        if(pagingCelllist->list.array)
+                        {
+                           for(cellIdx = 0; cellIdx < pagingCelllist->list.count; cellIdx++)
+                           {
+                              if(pagingCelllist->list.array[cellIdx])
+                              {
+                                 pagingCellItemIes = (PagingCell_ItemIEs_t *)pagingCelllist->list.array[cellIdx];
+                                 if(pagingCellItemIes->id == ProtocolIE_ID_id_PagingCell_Item)
+                                 {
+                                    pagingCellItem = &pagingCellItemIes->value.choice.PagingCell_Item;
+                                    free(pagingCellItem->nRCGI.pLMN_Identity.buf);
+                                    free(pagingCellItem->nRCGI.nRCellIdentity.buf);
+                                 }
+                                 free(pagingCelllist->list.array[cellIdx]);
+                              }
+                           }
+                           free(pagingCelllist->list.array);
+                        }
+                        break;
+                     }
+               }
+               free(paging->protocolIEs.list.array[ieIdx]);
+            }
+         }
+         free(paging->protocolIEs.list.array);
+
+      }
+   }
+}
+
+/**************************************************************
+ *
+ * @brief processing the paging f1ap msg received from CU 
+ *
+ * @details
+ *
+ *    Function : procPagingMsg
+ *
+ *    Functionality:
+ *         - processing the paging f1ap msg received from CU
+ *
+ * @params[in] F1AP_PDU_t *f1apMsg
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ *
+ ****************************************************************/
+uint8_t procPagingMsg(F1AP_PDU_t *f1apMsg) 
+{
+   uint8_t ieIdx = 0, cellListIdx = 0;
+   uint16_t cellId = 0;
+   Paging_t   *paging = NULLP;
+   PagingCell_list_t  *pagingCelllist = NULLP;
+   PagingCell_ItemIEs_t *pagingCellItemIes = NULLP;
+   PagingCell_Item_t *pagingCellItem = NULLP;
+   DuPagingMsg *tmpPagingParam = NULLP;
+
+   DU_LOG("\nINFO  --> DU APP : Processing the Paging Message");
+   paging = &f1apMsg->choice.initiatingMessage->value.choice.Paging;
+   if(paging)
+   {
+      if(paging->protocolIEs.list.array)
+      {
+         DU_ALLOC(tmpPagingParam, sizeof(DuPagingMsg));
+         if(tmpPagingParam == NULLP)
+         {
+            DU_LOG("\nERROR  --> DU APP : Memory Allocation Failure in procPagingMsg");
+            freeAperDecodePagingMsg(paging);
+            return RFAILED;
+         }
+         for(ieIdx=0 ; ieIdx<paging->protocolIEs.list.count; ieIdx++)
+         {
+            if(paging->protocolIEs.list.array[ieIdx])
+            {
+               switch(paging->protocolIEs.list.array[ieIdx]->id)
+               {
+                  case ProtocolIE_ID_id_UEIdentityIndexValue:
+                     {
+                        bitStringToInt(&paging->protocolIEs.list.array[ieIdx]->value.choice.UEIdentityIndexValue.choice.indexLength10,\
+                                         &tmpPagingParam->pagUeId);
+                        break;
+                     }
+
+                  case ProtocolIE_ID_id_PagingIdentity:
+                     {
+                        switch(paging->protocolIEs.list.array[ieIdx]->value.choice.PagingIdentity.present)
+                        {
+                           case PagingIdentity_PR_cNUEPagingIdentity: 
+                              {
+                                 if(paging->protocolIEs.list.array[ieIdx]->value.choice.PagingIdentity.choice.cNUEPagingIdentity)  
+                                 {
+                                    bitStringToInt(&paging->protocolIEs.list.array[ieIdx]->value.choice.PagingIdentity.choice.\
+                                          cNUEPagingIdentity->choice.fiveG_S_TMSI, &tmpPagingParam->sTmsi);
+
+                                 }
+                                 break;
+                              }
+                            case PagingIdentity_PR_rANUEPagingIdentity:
+                               {
+                                  /*TODO: This Identifier is specific to RAN Initiated Paging – Connected Mode Paging*/
+                                  break;
+                               }
+                            default:
+                               {
+                                  DU_LOG("ERROR  -->  DU APP: Invalid UE Paging Identity, Skipping this Paging Message:");
+                                  continue;
+                               }
+                        }
+                     }
+
+                  case ProtocolIE_ID_id_PagingDRX:
+                     {
+                        tmpPagingParam->pagingDrxPres = TRUE;
+                        tmpPagingParam->pagingDrx = convertPagingCycleEnumToValue(paging->protocolIEs.list.array[ieIdx]->value.choice.PagingDRX);
+                        break;
+                     }
+
+                  case ProtocolIE_ID_id_PagingPriority:
+                     {
+                        tmpPagingParam->pagPriority = paging->protocolIEs.list.array[ieIdx]->value.choice.PagingPriority;
+                        break;
+                     }
+
+                  case ProtocolIE_ID_id_PagingCell_List:
+                     {
+                        pagingCelllist = &paging->protocolIEs.list.array[ieIdx]->value.choice.PagingCell_list; 
+                        if(pagingCelllist->list.array)
+                        {
+                           for(cellListIdx = 0; cellListIdx < pagingCelllist->list.count; cellListIdx++)
+                           {
+                              if(pagingCelllist->list.array[cellListIdx])
+                              {
+                                 pagingCellItemIes = (PagingCell_ItemIEs_t *)pagingCelllist->list.array[cellListIdx];
+                                 pagingCellItem = &pagingCellItemIes->value.choice.PagingCell_Item;
+                                 bitStringToInt(&pagingCellItem->nRCGI.nRCellIdentity, &cellId);
+                                 if(processPagingMsg(cellId, tmpPagingParam) != ROK)
+                                 {
+                                    DU_LOG("\nERROR  --> DU APP : Paging Processing Failed at CellId:%d",cellId);
+                                    continue;
+                                 }
+                              }
+                           }
+                        }
+                        break;
+                     }
+                   default:
+                     {
+                         DU_LOG("\nERROR  --> F1AP : Incorrect Paging IE option");
+                         break;
+                     }
+               }
+            }
+         }
+      }
+   }
+   DU_FREE(tmpPagingParam, sizeof(DuPagingMsg));
+   freeAperDecodePagingMsg(paging);
+  
+   return ROK;
+}
+
 /**************************************************************
  *
  * @brief Handles received F1AP message and sends back response  
@@ -15424,6 +15658,11 @@ void F1APMsgHdlr(Buffer *mBuf)
                       procF1UeContextReleaseCommand(f1apMsg);
                       break;
                   }
+               case InitiatingMessage__value_PR_Paging:
+                  {
+                     procPagingMsg(f1apMsg);
+                     break;
+                  }
                default:
                   {
                      DU_LOG("\nERROR  -->  F1AP : Invalid type of F1AP_PDU_PR_initiatingMessage [%d]",