Merge "DL throughput calculation for UM [Issue-ID: ODUHIGH-319]"
[o-du/l2.git] / src / du_app / du_ue_mgr.c
index 4986c68..73ceca3 100644 (file)
@@ -83,6 +83,27 @@ DuRlcDlUserDataToRlcFunc duSendRlcDlUserDataToRlcOpts[] =
    packRlcDlUserDataToRlc         /* Light weight-loose coupling */
 };
 
+DuMacUeDeleteReq packMacUeDeleteReqOpts[] =
+{
+   packDuMacUeDeleteReq,       /* Loose coupling */
+   MacProcUeDeleteReq,         /* TIght coupling */
+   packDuMacUeDeleteReq        /* Light weight-loose coupling */
+};
+
+DuRlcUeDeleteReq packRlcUeDeleteReqOpts[] =
+{
+   packDuRlcUeDeleteReq,       /* Loose coupling */
+   RlcProcUeDeleteReq,         /* TIght coupling */
+   packDuRlcUeDeleteReq        /* Light weight-loose coupling */
+};
+
+DuMacCellDeleteReq packMacCellDeleteReqOpts[] =
+{
+   packDuMacCellDeleteReq,       /* Loose coupling */
+   MacProcCellDeleteReq,         /* TIght coupling */
+   packDuMacCellDeleteReq        /* Light weight-loose coupling */
+};
+
 /*******************************************************************
  *
  * @brief Function to fillDlUserDataInfo
@@ -1123,6 +1144,7 @@ uint8_t fillMacUeCfg(uint16_t cellId, uint8_t ueIdx, uint16_t crnti, \
       /* Fetching MacDb from DuUeCb */
       GET_CELL_IDX(cellId, cellIdx);
       duMacDb = &duCb.actvCellLst[cellIdx]->ueCb[ueIdx-1].macUeCfg;
+      duMacDb->macUeCfgState = UE_CFG_INPROGRESS;
       /* Fetching MaUeCfg List for ADD/MOD/DEL */
       macUeCfg->cellId       = cellId;
       macUeCfg->ueIdx        = ueIdx;
@@ -1144,8 +1166,10 @@ uint8_t fillMacUeCfg(uint16_t cellId, uint8_t ueIdx, uint16_t crnti, \
             }
          }
          ret = fillAmbr(&macUeCfg->ambrCfg, ueCfgDb->ambrCfg);
-
-         duFillModulationDetails(macUeCfg, duMacDb, ueCfgDb->ueNrCapability);
+         if(ueCfgDb->ueNrCapability != NULLP)
+         {
+            duFillModulationDetails(macUeCfg, duMacDb, ueCfgDb->ueNrCapability);
+         }
       }
 
       /* Filling LC Context */
@@ -1487,41 +1511,42 @@ uint8_t fillRlcUeCfg(uint16_t cellId, uint8_t ueIdx,\
       /* Fetch RlcDb from DuUeCb */ 
       GET_CELL_IDX(cellId, cellIdx);
       duRlcDb = &duCb.actvCellLst[cellIdx]->ueCb[ueIdx-1].rlcUeCfg;
+      duRlcDb->rlcUeCfgState = UE_CFG_INPROGRESS;
       /*Filling RlcUeCfg */
       rlcUeCfg->cellId       = cellId;
       rlcUeCfg->ueIdx        = ueIdx;
       for(dbIdx = 0; (dbIdx < ueCfgDb->numRlcLcs && ret == ROK); dbIdx++)
       {
-        ret = fillDefaultRlcModeCfg(ueCfgDb->rlcLcCfg[dbIdx].rlcMode, &ueCfgDb->rlcLcCfg[dbIdx]);
-        if(ret == RFAILED)
-        {
-           DU_LOG("\n ERROR  -->  DU APP : Failed to fill Rlc Mode at fillRlcUeCfg()");
-           memset(rlcUeCfg, 0, sizeof(RlcUeCfg));
-           return ret;
-        }
-        /* Fill Rlc Ue Cfg List for ADD/MOD/DEL */
-        for(lcIdx = 0; lcIdx < duRlcDb->numLcs; lcIdx++)
-        { 
-           if(ueCfgDb->rlcLcCfg[dbIdx].lcId == duRlcDb->rlcLcCfg[lcIdx].lcId)
-           {
-              lcIdFound = true;
-              if((ueCfgDb->rlcLcCfg[dbIdx].configType == CONFIG_UNKNOWN)||
-                    (ueCfgDb->rlcLcCfg[dbIdx].configType == CONFIG_MOD))
-              {
-                 /* MOD */ 
-                 ueCfgDb->rlcLcCfg[dbIdx].configType = CONFIG_MOD; /* update Db for MOD type */
-                 memcpy(&rlcUeCfg->rlcLcCfg[dbIdx], &ueCfgDb->rlcLcCfg[dbIdx], sizeof(RlcBearerCfg));
-              }
-           }
-           else
-              lcIdFound = false;
-        }
-        if(!lcIdFound)
-        {
-           /* ADD/ DEL Config Type */
-           memcpy(&rlcUeCfg->rlcLcCfg[dbIdx], &ueCfgDb->rlcLcCfg[dbIdx], sizeof(RlcBearerCfg));
-        }
-        rlcUeCfg->numLcs++;
+         ret = fillDefaultRlcModeCfg(ueCfgDb->rlcLcCfg[dbIdx].rlcMode, &ueCfgDb->rlcLcCfg[dbIdx]);
+         if(ret == RFAILED)
+         {
+            DU_LOG("\n ERROR  -->  DU APP : Failed to fill Rlc Mode at fillRlcUeCfg()");
+            memset(rlcUeCfg, 0, sizeof(RlcUeCfg));
+            return ret;
+         }
+         /* Fill Rlc Ue Cfg List for ADD/MOD/DEL */
+         for(lcIdx = 0; lcIdx < duRlcDb->numLcs; lcIdx++)
+         
+            if(ueCfgDb->rlcLcCfg[dbIdx].lcId == duRlcDb->rlcLcCfg[lcIdx].lcId)
+            {
+               lcIdFound = true;
+               if((ueCfgDb->rlcLcCfg[dbIdx].configType == CONFIG_UNKNOWN)||
+                     (ueCfgDb->rlcLcCfg[dbIdx].configType == CONFIG_MOD))
+               {
+                  /* MOD */ 
+                  ueCfgDb->rlcLcCfg[dbIdx].configType = CONFIG_MOD; /* update Db for MOD type */
+                  memcpy(&rlcUeCfg->rlcLcCfg[dbIdx], &ueCfgDb->rlcLcCfg[dbIdx], sizeof(RlcBearerCfg));
+               }
+            }
+            else
+               lcIdFound = false;
+         }
+         if(!lcIdFound)
+         {
+            /* ADD/ DEL Config Type */
+            memcpy(&rlcUeCfg->rlcLcCfg[dbIdx], &ueCfgDb->rlcLcCfg[dbIdx], sizeof(RlcBearerCfg));
+         }
+         rlcUeCfg->numLcs++;
       }
    }
    return ret;
@@ -1624,7 +1649,7 @@ uint8_t duBuildAndSendUeCreateReqToMac(uint16_t cellId, uint8_t ueIdx,\
    if(macUeCfg)
    {
       memset(macUeCfg, 0, sizeof(MacUeCfg));
-      memcpy(macUeCfg, &duCb.actvCellLst[cellId - 1]->ueCb[ueIdx -1].macUeCfg, sizeof(MacUeCfg));
+      memcpy(macUeCfg, duMacUeCfg, sizeof(MacUeCfg));
       DU_LOG("\nDEBUG   -->  DU_APP: Sending UE create request to MAC");
 
       /* Processing one Ue at a time to MAC */
@@ -2165,8 +2190,6 @@ uint8_t DuProcMacUeCfgRsp(Pst *pst, MacUeCfgRsp *cfgRsp)
             if((ret = duUpdateDuUeCbCfg(cfgRsp->ueIdx, cfgRsp->cellId)) == ROK)
             {
                BuildAndSendUeCtxtRsp(cfgRsp->ueIdx, cfgRsp->cellId);
-               duCb.actvCellLst[cfgRsp->cellId -1]->ueCb[cfgRsp->ueIdx -1].\
-                  macUeCfg.macUeCfgState = 0;
             }
          }
       }
@@ -2288,8 +2311,6 @@ uint8_t DuProcRlcUeCfgRsp(Pst *pst, RlcUeCfgRsp *cfgRsp)
             if((ret = duUpdateDuUeCbCfg(cfgRsp->ueIdx, cfgRsp->cellId)) == ROK)
             {
                BuildAndSendUeCtxtRsp(cfgRsp->ueIdx, cfgRsp->cellId);
-               duCb.actvCellLst[cfgRsp->cellId -1]->ueCb[cfgRsp->ueIdx -1].\
-                  rlcUeCfg.rlcUeCfgState = 0;
             }   
          }
       }
@@ -2490,7 +2511,7 @@ uint8_t DuProcRlcDlRrcMsgRsp(Pst *pst, RlcDlRrcMsgRsp *dlRrcMsg)
  *
  * @details
  *
- *    Function : duProcUeContextSetupRequest
+ *    Function : duProcUeContextSetupRequest 
  *
  *    Functionality: Process UE context setup request from CU
  *
@@ -2634,6 +2655,693 @@ uint8_t duProcUeContextModReq(DuUeCb *ueCb)
    }
    return ROK;
 }
+
+/*******************************************************************
+*
+* @brief Function to delete Pdsch ServCellCfg
+*
+* @details
+*
+*    Function : deletePdschServCellCfg
+*
+*    Functionality: Function to delete Pdsch ServCellCfg
+*
+* @params[in] PdschServCellCfg *pdschServCellCfg
+* @return void
+*
+* ****************************************************************/
+
+void deletePdschServCellCfg(PdschServCellCfg *pdschServCellCfg)
+{
+   DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,pdschServCellCfg->maxMimoLayers, sizeof(uint8_t));
+   DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,pdschServCellCfg->maxCodeBlkGrpPerTb, sizeof(MaxCodeBlkGrpPerTB));
+   DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,pdschServCellCfg->codeBlkGrpFlushInd, sizeof(bool));
+   DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,pdschServCellCfg->xOverhead, sizeof(PdschXOverhead));
+}
+
+/*******************************************************************
+ *
+* @brief delete MacUeCfg from duCb
+*
+* @details
+*
+*    Function : deleteMacUeCfg 
+*
+*    Functionality: delete MacUeCfg from duCb
+*
+* @params[in] Pointer to MacUeCfg 
+* @return ROK     - success
+*         RFAILED - failure
+*
+*******************************************************************/
+
+void deleteMacUeCfg(MacUeCfg *ueCfg)
+{
+   uint8_t lcCfgIdx;
+   uint8_t resrcIdx;
+   ServCellCfgInfo *servCellCfg;
+   PucchResrcInfo *resrcToAddModList;
+
+   if(ueCfg)
+   {
+      DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,ueCfg->ambrCfg, sizeof(AmbrCfg));
+      if(ueCfg->spCellCfgPres)
+      {
+         servCellCfg = &ueCfg->spCellCfg.servCellCfg;
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,servCellCfg->bwpInactivityTmr, sizeof(uint8_t));
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,servCellCfg->initUlBwp.pucchCfg.resrcSet,\
+         sizeof(PucchResrcSetCfg));
+         if(servCellCfg->initUlBwp.pucchCfg.resrc)
+         {
+            /*freeing the PucchResrcCfg*/
+            for(resrcIdx= 0; resrcIdx< servCellCfg->initUlBwp.pucchCfg.resrc->resrcToAddModListCount; resrcIdx++)
+            {
+               resrcToAddModList=&servCellCfg->initUlBwp.pucchCfg.resrc->resrcToAddModList[resrcIdx];
+               switch(resrcToAddModList->pucchFormat)
+               {
+                  case PUCCH_FORMAT_0:
+                     {
+                        DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,resrcToAddModList->PucchFormat.format0 ,\
+                        sizeof(PucchFormat0));
+                        break;
+                     }
+                  case PUCCH_FORMAT_1:
+                     {
+                        DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,resrcToAddModList->PucchFormat.format1 ,\
+                        sizeof(PucchFormat1));
+                        break;
+                     }
+                  case PUCCH_FORMAT_2:
+                     {
+                        DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,resrcToAddModList->PucchFormat.format2 ,\
+                        sizeof(PucchFormat2_3));
+                        break;
+                     }
+                  case PUCCH_FORMAT_3:
+                     {
+                        DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,resrcToAddModList->PucchFormat.format3 ,\
+                        sizeof(PucchFormat2_3));
+                        break;
+                     }
+                  case PUCCH_FORMAT_4:
+                     {
+                        DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,resrcToAddModList->PucchFormat.format4 ,\
+                        sizeof(PucchFormat4));
+                        break;
+                     }
+               }
+            }
+            DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,servCellCfg->initUlBwp.pucchCfg.resrc,\
+            sizeof(PucchResrcCfg));
+         }
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,servCellCfg->initUlBwp.pucchCfg.format1,\
+         sizeof(PucchFormatCfg));
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,servCellCfg->initUlBwp.pucchCfg.format2,\
+         sizeof(PucchFormatCfg));
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,servCellCfg->initUlBwp.pucchCfg.format3,\
+         sizeof(PucchFormatCfg));
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,servCellCfg->initUlBwp.pucchCfg.format4,\
+         sizeof(PucchFormatCfg));
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,servCellCfg->initUlBwp.pucchCfg.schedReq,\
+         sizeof(PucchSchedReqCfg));
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,servCellCfg->initUlBwp.pucchCfg.multiCsiCfg,\
+         sizeof(PucchMultiCsiCfg));
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,servCellCfg->initUlBwp.pucchCfg.spatialInfo,\
+         sizeof(PucchSpatialCfg));
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,servCellCfg->initUlBwp.pucchCfg.dlDataToUlAck ,\
+         sizeof(PucchDlDataToUlAck));
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,servCellCfg->initUlBwp.pucchCfg.powerControl,\
+         sizeof(PucchPowerControl));
+         deletePdschServCellCfg(&servCellCfg->pdschServCellCfg);
+      }
+      for(lcCfgIdx=0; lcCfgIdx< ueCfg->numLcs; lcCfgIdx++)
+      {
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,ueCfg->lcCfgList[lcCfgIdx].drbQos, sizeof(DrbQosInfo));
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,ueCfg->lcCfgList[lcCfgIdx].snssai, sizeof(Snssai));
+      }
+   }
+   memset(ueCfg, 0, sizeof(MacUeCfg));
+}
+
+/*******************************************************************
+*
+* @brief delete UE Configuration of a particular UE
+*
+* @details
+*
+*    Function : deleteUeCfg 
+*
+*    Functionality: delete UE Configuration of a particular UE 
+*
+* @params[in] uint16_t cellIdx, uint8_t ueIdx
+* @return ROK     - success
+*         RFAILED - failure
+*
+* ****************************************************************/
+uint8_t  deleteUeCfg(uint16_t cellIdx, uint8_t ueIdx)
+{
+   DuUeCb *ueCb = NULLP;
+   if(duCb.actvCellLst[cellIdx] != NULLP)
+   {
+      if((duCb.actvCellLst[cellIdx]->ueCb[ueIdx-1].macUeCfg.macUeCfgState == UE_DELETE_COMPLETE)\
+            &&(duCb.actvCellLst[cellIdx]->ueCb[ueIdx-1].rlcUeCfg.rlcUeCfgState == UE_DELETE_COMPLETE))
+      {
+         ueCb = &duCb.actvCellLst[cellIdx]->ueCb[ueIdx-1];
+         deleteMacUeCfg(&ueCb->macUeCfg);
+         deleteRlcUeCfg(&ueCb->rlcUeCfg);
+         if(ueCb->f1UeDb !=NULLP)
+         {
+            freeF1UeDb(ueCb->f1UeDb);
+         }
+         duCb.actvCellLst[cellIdx]->numActvUes--;
+         memset(ueCb, 0, sizeof(DuUeCb));
+      }
+      else
+      {
+         DU_LOG("INFO  --> DU APP : deleteUeCfg(): MAC or RLC UE configuration state not UE_DELETE_COMPLETE");
+         return RFAILED;
+      }
+   }
+   else
+   {
+      DU_LOG("ERROR  --> DU APP : deleteUeCfg(): CellIdx[%d] is not found", cellIdx);
+      return RFAILED;
+   }
+   return ROK;
+}
+
+
+/*******************************************************************
+*
+* @brief Handle UE delete response from MAC
+*
+* @details
+*
+*    Function : DuProcMacUeDeleteRsp
+*
+*    Functionality: Handle UE delete response from MAC
+*
+* @params[in] Pointer to MacUeDeleteRsp and Pst
+* @return ROK     - success
+*         RFAILED - failure
+*
+* ****************************************************************/
+
+uint8_t DuProcMacUeDeleteRsp(Pst *pst, MacUeDeleteRsp *deleteRsp)
+{
+   uint8_t  ueIdx = 0,ret =ROK;
+   uint16_t cellIdx=0;
+   uint32_t gnbCuUeF1apId=0, gnbDuUeF1apId =0;
+
+   if(deleteRsp)
+   {
+      if(deleteRsp->result == SUCCESS)
+      {
+         DU_LOG("\nINFO   -->  DU APP : MAC UE Delete Response : SUCCESS [UE IDX : %d]", deleteRsp->ueIdx);
+         GET_CELL_IDX(deleteRsp->cellId, cellIdx);
+         ueIdx = deleteRsp->ueIdx;
+         if(duCb.actvCellLst[cellIdx])
+         {
+            duCb.actvCellLst[cellIdx]->ueCb[deleteRsp->ueIdx -1].macUeCfg.macUeCfgState = UE_DELETE_COMPLETE;
+            gnbCuUeF1apId = duCb.actvCellLst[cellIdx]->ueCb[ueIdx-1].gnbDuUeF1apId;
+            gnbDuUeF1apId = duCb.actvCellLst[cellIdx]->ueCb[ueIdx-1].gnbCuUeF1apId;
+            if(deleteUeCfg(cellIdx, ueIdx) == ROK)
+            {
+                 ret = BuildAndSendUeContextReleaseComplete(gnbCuUeF1apId, gnbDuUeF1apId);
+                 if(ret !=ROK)
+                 {   
+                    DU_LOG("\nERROR  -->  DU APP : DuProcMacUeDeleteRsp(): failed to send UE context release complete");
+                 }
+            }
+         }
+      }
+      else
+      {
+         DU_LOG("\nERROR  -->  DU APP : DuProcMacUeDeleteRsp(): MAC UE Delete Response : FAILURE [UE IDX : %d]",\
+         deleteRsp->ueIdx);
+         ret =  RFAILED;
+      }
+      DU_FREE_SHRABL_BUF(pst->region, pst->pool, deleteRsp, sizeof(MacUeDeleteRsp));
+   }
+   else
+   {
+      DU_LOG("\nERROR  -->  DU APP : DuProcMacUeDeleteRsp(): MAC UE Delete Response is null");
+      ret = RFAILED;
+   }
+   return ret;
+}
+
+/*******************************************************************
+ *
+ * @brief Processes UE Delete Rsp received from RLC 
+ *
+ * @details
+ *
+ *    Function : DuProcRlcUeDeleteRsp
+ *
+ *    Functionality:
+ *     Processes UE Delete Rsp received from RLC 
+ *
+ *  @params[in]  Post structure
+ *               Pointer to RlcUeDeleteRsp
+ *  @return ROK     - success
+ *          RFAILED - failure
+ *
+ * *****************************************************************/
+
+uint8_t DuProcRlcUeDeleteRsp(Pst *pst, RlcUeDeleteRsp *delRsp)
+{
+   uint8_t  ueIdx = 0, ret = ROK;
+   uint16_t cellIdx = 0;
+   uint32_t gnbCuUeF1apId=0, gnbDuUeF1apId =0;   
+
+   if(delRsp)
+   {
+      ueIdx = delRsp->ueIdx;
+      GET_CELL_IDX(delRsp->cellId, cellIdx);
+
+      if(delRsp->result == SUCCESSFUL)
+      {
+         DU_LOG("\nINFO   -->  DU_APP: RLC UE Delete Response : SUCCESS [UE IDX:%d]", ueIdx);
+         if(duCb.actvCellLst[cellIdx]!=NULLP)
+         {
+            duCb.actvCellLst[cellIdx]->ueCb[ueIdx-1].rlcUeCfg.rlcUeCfgState = UE_DELETE_COMPLETE;
+            gnbCuUeF1apId = duCb.actvCellLst[cellIdx]->ueCb[ueIdx-1].gnbDuUeF1apId;
+            gnbDuUeF1apId = duCb.actvCellLst[cellIdx]->ueCb[ueIdx-1].gnbCuUeF1apId;
+            if(deleteUeCfg(cellIdx, ueIdx) == ROK)
+            {
+                ret = BuildAndSendUeContextReleaseComplete(gnbCuUeF1apId, gnbDuUeF1apId);
+                if(ret != ROK)
+                {
+                   DU_LOG("\nERROR  -->  DU APP : DuProcMacUeDeleteRsp(): failed to send UE context release complete");
+                }
+            }
+         }
+      }
+      else
+      {
+         DU_LOG("\nERROR   -->  DU_APP: RLC UE Delete Response : FAILED [UE IDX:%d]", ueIdx);
+         ret = RFAILED;
+      }
+      DU_FREE_SHRABL_BUF(pst->region, pst->pool, delRsp, sizeof(RlcUeDeleteRsp));
+
+   }
+   return ret;
+}
+
+/*******************************************************************
+ *
+ * @brief Sending UE Delete Req To Mac
+*
+* @details
+*
+*    Function : sendUeDeleteReqToMac
+*
+*    Functionality:
+*     sending UE Delete Req To Mac
+*
+*  @params[in]    cellId, ueIdx, crnti 
+*  @return ROK     - success
+*          RFAILED - failure
+*
+*****************************************************************/
+
+uint8_t sendUeDeleteReqToMac(uint16_t cellId, uint8_t ueIdx, uint16_t crnti)
+{
+   Pst pst;
+   uint8_t ret=ROK;
+   MacUeDelete *ueDelete = NULLP;
+
+   DU_ALLOC_SHRABL_BUF(ueDelete, sizeof(MacUeDelete));
+   if(ueDelete)
+   {
+      ueDelete->cellId = cellId;
+      ueDelete->ueIdx  = ueIdx;
+      ueDelete->crnti  = crnti;
+      FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_UE_DELETE_REQ);
+
+      /* Processing one Ue at a time to MAC */
+      DU_LOG("\nDEBUG  -->  DU_APP: Sending UE delete Request to MAC ");
+      ret = (*packMacUeDeleteReqOpts[pst.selector])(&pst, ueDelete);
+      if(ret == RFAILED)
+      {
+         DU_LOG("\nERROR  -->  DU_APP: sendUeDeleteReqToMac(): Failed to send UE delete Req to MAC");
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, ueDelete, sizeof(MacUeDelete));
+      }
+   }
+   else
+   {
+      DU_LOG("\nERROR  -->   DU_APP: sendUeDeleteReqToMac(): Failed to allocate memory"); 
+      ret = RFAILED;
+   }
+   return ret;
+}
+
+/*******************************************************************
+ *
+ * @brief Sending UE Delete Req To Rlc
+ *
+ * @details
+ *
+ *    Function : sendUeDeleteReqToRlc
+ *
+ *    Functionality:
+ *     Sending UE Delete Req To Rlc
+ *
+ *  @params[in]  cellId, ueIdx 
+ *  @return ROK     - success
+ *          RFAILED - failure
+ *
+ *****************************************************************/
+
+uint8_t sendUeDeleteReqToRlc(uint16_t cellId, uint8_t ueIdx)
+{
+   uint8_t ret;
+   Pst pst;
+   RlcUeDelete *ueDelete;
+
+   DU_ALLOC_SHRABL_BUF(ueDelete, sizeof(RlcUeDelete));
+   if(ueDelete !=NULLP)
+   {
+      ueDelete->cellId = cellId;
+      ueDelete->ueIdx = ueIdx;
+      FILL_PST_DUAPP_TO_RLC(pst, RLC_UL_INST, EVENT_RLC_UE_DELETE_REQ);
+
+      ret = (*packRlcUeDeleteReqOpts[pst.selector])(&pst, ueDelete);
+      if(ret == RFAILED)
+      {
+         DU_LOG("\nERROR  -->  DU_APP : sendUeDeleteReqToRlc():Failed to send UE Delete  Req to RLC"); 
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, ueDelete, sizeof(RlcUeDelete));
+      }
+   }
+   else
+   {
+      DU_LOG("\nERROR  -->   DU_APP: sendUeDeleteReqToRlc():Memory allocation failed");
+      ret = RFAILED;
+   }
+   return ret;
+}
+
+/*******************************************************************
+ *
+ * @brief DU processes UE delete req from CU and sends to MAC and RLC 
+ *
+ * @details
+ *
+ *    Function : duProcUeDeleteReq
+ *
+ *    Functionality: DU processes UE delete req from CU and sends to MAC 
+ *                   and RLC 
+ *
+ * @params[in] cellId, crnti 
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ * ****************************************************************/
+
+uint8_t duProcUeDeleteReq(uint16_t cellId)
+{
+   uint8_t  ueIdx = 0, ueId =0;
+   uint16_t cellIdx = 0, crnti   = 0;
+
+   DU_LOG("\nDEBUG   -->  DU_APP: Processing UE Delete Request ");
+   GET_CELL_IDX(cellId, cellIdx);
+   GET_CRNTI(crnti,ueIdx);
+
+   if(duCb.actvCellLst[cellIdx] != NULLP)
+   {
+      for(ueIdx =0;ueIdx< duCb.actvCellLst[cellIdx]->numActvUes; ueIdx++)
+      {
+         ueId = ueIdx+1;
+         if(sendUeDeleteReqToRlc(cellId, ueId) == RFAILED)
+         {
+            DU_LOG("\nERROR  -->  DU APP : duProcUeDeleteReq():Failed to build UE  delete req for RLC ");
+            return RFAILED;
+         }
+
+         GET_CRNTI(crnti,ueId);
+         if(sendUeDeleteReqToMac(cellId, ueId, crnti) == RFAILED)
+         {
+            DU_LOG("\nERROR  -->  DU APP : duProcUeDeleteReq(): Failed to build UE  delete req for MAC ");
+            return RFAILED;
+         }
+      }
+   }
+   else
+   {
+      DU_LOG("\nERROR  -->  DU APP : duProcUeDeleteReq(): Cell Id is not found");
+      return RFAILED;
+   }
+
+   return ROK;
+}
+
+/*******************************************************************
+ *
+ * @brief delete RlcUeCfg from duCb
+ *
+ * @details
+ *
+ *    Function : deleteRlcUeCfg
+ *
+ *    Functionality:
+ *       delete  RlcUeCfg from duCb
+ *
+ *  @params[in] RlcUeCfg *ueCfg 
+ *               
+ *  @return ROK     - success
+ *          RFAILED - failure
+ *
+ *****************************************************************/
+
+void deleteRlcUeCfg(RlcUeCfg *ueCfg)
+{
+   uint8_t lcIdx = 0;
+   RlcBearerCfg *lcCfg= NULLP;
+   if(ueCfg)
+   {
+      for(lcIdx =0 ; lcIdx < ueCfg->numLcs ; lcIdx++)
+      {
+         lcCfg = &ueCfg->rlcLcCfg[lcIdx];
+         switch(lcCfg->rlcMode)
+         {
+            case RLC_AM :
+               {
+                  DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, lcCfg->u.amCfg, sizeof(AmBearerCfg));
+                  break;
+               }
+            case RLC_UM_BI_DIRECTIONAL :
+               {
+                  DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, lcCfg->u.umBiDirCfg, sizeof(UmBiDirBearerCfg));
+                  break;
+               }
+            case RLC_UM_UNI_DIRECTIONAL_UL :
+               {
+                  DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, lcCfg->u.umUniDirUlCfg, sizeof(UmUniDirUlBearerCfg));
+                  break;
+               }
+            case RLC_UM_UNI_DIRECTIONAL_DL :
+               {
+                  DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, lcCfg->u.umUniDirDlCfg, sizeof(UmUniDirDlBearerCfg));
+                  break;
+               }
+         }
+      }
+      memset(ueCfg, 0, sizeof(RlcUeCfg));
+   }
+}
+
+/*******************************************************************
+ *
+ * @brief Delete DU CellCb information 
+ *
+ * @details
+ *
+ *    Function : deleteDuCellCb
+ *
+ *    Functionality: Delete DU CellCb information
+ *
+ * @params[in] DuCellCb *cellCb
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ * ****************************************************************/
+
+void deleteDuCellCb(DuCellCb *cellCb)
+{
+
+   if(cellCb->duMacCellCfg)
+   {
+      if(cellCb->duMacCellCfg->prachCfg.fdm[0].unsuedRootSeq)
+      {
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, cellCb->duMacCellCfg->prachCfg.fdm[0].unsuedRootSeq,\
+               cellCb->duMacCellCfg->prachCfg.fdm[0].numUnusedRootSeq);
+      }
+      if(cellCb->duMacCellCfg->sib1Cfg.sib1Pdu)
+      {
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL,cellCb->duMacCellCfg->sib1Cfg.sib1Pdu,\
+               cellCb->duMacCellCfg->sib1Cfg.sib1PduLen);
+      }
+      DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, cellCb->duMacCellCfg, sizeof(MacCellCfg));
+   }
+   memset(cellCb, 0, sizeof(DuCellCb));
+
+}
+
+/*******************************************************************
+ *
+ * @brief Handle Cell delete response from MAC
+ *
+ * @details
+ *
+ *    Function : DuProcMacCellDeleteRsp
+ *
+ *    Functionality: Handle Cell delete response from MAC
+ *
+ * @params[in] Pointer to MacCellDeleteRsp and Pst
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ * ****************************************************************/
+
+uint8_t DuProcMacCellDeleteRsp(Pst *pst, MacCellDeleteRsp *deleteRsp)
+{
+   uint8_t ret = ROK;
+   uint16_t cellIdx=0;
+   if(deleteRsp)
+   {
+      if(deleteRsp->result == SUCCESSFUL_RSP)
+      {
+         GET_CELL_IDX(deleteRsp->cellId, cellIdx);
+         DU_LOG("\nINFO   -->  DU APP : MAC CELL Delete Response : SUCCESS [CELL IDX : %d]", deleteRsp->cellId);
+         if(duCb.actvCellLst[cellIdx]->cellId == deleteRsp->cellId)
+         {
+            deleteDuCellCb(duCb.actvCellLst[cellIdx]);
+            duCb.numActvCells--;
+            DU_FREE(duCb.actvCellLst[cellIdx], sizeof(DuCellCb));
+         }
+         else
+         {
+            DU_LOG("\nERROR  -->  DU APP : DuProcMacCellDeleteRsp(): CellId [%d] doesnot exist", deleteRsp->cellId);
+            ret = RFAILED;
+         }
+      }
+      else
+      {
+         DU_LOG("\nERROR  -->  DU APP : DuProcMacCellDeleteRsp(): MAC CELL Delete Response : FAILED\
+         [CELL IDX : %d]", deleteRsp->cellId);
+         ret = RFAILED;
+      }
+      DU_FREE_SHRABL_BUF(pst->region, pst->pool, deleteRsp, sizeof(MacUeDeleteRsp));
+   }
+   else
+   {
+      DU_LOG("\nERROR  -->  DU APP : DuProcMacCellDeleteRsp(): Received MAC cell delete response is NULL");
+      ret = RFAILED;
+   }
+   return ret;
+}
+
+/*******************************************************************
+ *
+ * @brief Sending Cell Delete Req To Mac
+ *
+ * @details
+ *
+ *    Function : sendCellDeleteReqToMac
+ *
+ *    Functionality:
+ *     sending Cell Delete Req To Mac
+ *
+ *  @params[in]    uint16_t cellId
+ *  @return ROK     - success
+ *          RFAILED - failure
+ *
+ *
+ *****************************************************************/
+
+uint8_t sendCellDeleteReqToMac(uint16_t cellId)
+{
+   Pst pst;
+   uint8_t ret=ROK;
+   MacCellDelete *cellDelete = NULLP;
+   
+   DU_ALLOC(cellDelete, sizeof(MacCellDelete));
+   if(cellDelete)
+   {
+      cellDelete->cellId = cellId;
+      FILL_PST_DUAPP_TO_MAC(pst, EVENT_MAC_CELL_DELETE_REQ);
+
+      DU_LOG("\nINFO   -->  DU APP : Sending Cell Delete Request to MAC");  
+      /* Processing one Cell at a time to MAC */
+      ret = (*packMacCellDeleteReqOpts[pst.selector])(&pst, cellDelete);
+      if(ret == RFAILED)
+      {
+         DU_LOG("\nERROR  -->  DU APP : sendCellDeleteReqToMac(): Failed to send Cell delete Req to MAC");
+         DU_FREE_SHRABL_BUF(DU_APP_MEM_REGION, DU_POOL, cellDelete, sizeof(MacCellDelete));
+      }
+   }
+   else
+   {
+      DU_LOG("\nERROR  -->   DU APP : sendCellDeleteReqToMac(): Failed to allocate memory"); 
+      ret = RFAILED;
+   }
+   return ret;
+}
+
+/*******************************************************************
+ *
+ * @brief DU preocess Cell Delete Req to MAC 
+ *
+ * @details
+ *
+ *    Function : duProcCellDeleteReq 
+ *
+ *    Functionality: DU process Cell Delete Req to MAC 
+ *
+ * @params[in] uint16_t cellId
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ * ****************************************************************/
+
+uint8_t duProcCellDeleteReq(uint16_t cellId)
+{
+   uint16_t cellIdx = 0;
+   
+   DU_LOG("\nINFO   -->  DU APP : Processing Cell Delete Request ");
+   GET_CELL_IDX(cellId, cellIdx);
+
+   if(duCb.actvCellLst[cellIdx] != NULLP)
+   {
+      if(duBuildAndSendMacCellStop() == RFAILED)
+      {
+         DU_LOG("\nERROR  -->  DU APP : duProcCellDeleteReq(): Failed to process Cell delete req for cellId[%d]",cellId);
+         return RFAILED;
+      }
+      
+      if(duCb.actvCellLst[cellIdx]->numActvUes)
+      {
+         DU_LOG("\nERROR  -->  DU APP : duProcCellDeleteReq(): Active UEs present Failed to process cell Delete\
+         Req for cellID[%d]", cellId);
+         return RFAILED;
+      }
+      if(sendCellDeleteReqToMac(cellId) == RFAILED)
+      {
+         DU_LOG("\nERROR  -->  DU APP : duProcCellDeleteReq(): Failed to build and send Cell delete req for MAC for\
+         cellId[%d]",cellId);
+         return RFAILED;
+      }
+   }
+   else
+   {
+      DU_LOG("\nERROR  -->  DU APP : duProcCellDeleteReq(): CellId[%d] is not found", cellId);
+      return RFAILED;
+   }
+
+   return ROK;
+}
+
 /**********************************************************************
   End of file
- ***********************************************************************/
+***********************************************************************/