Merge "[Epic-ID: ODUHIGH-516][Task-ID: ODUHIGH-534] Implementation of Reset request...
[o-du/l2.git] / src / ric_stub / ric_e2ap_msg_hdl.c
index 9a46679..5b1e08e 100644 (file)
@@ -125,6 +125,108 @@ uint8_t SendE2APMsg(Region region, Pool pool, uint32_t duId)
    return ROK;
 } /* SendE2APMsg */
 
+/*******************************************************************
+ *
+ * @brief Fetches RAN Function DB
+ *
+ * @details
+ *
+ *    Function : fetchRanFuncFromRanFuncId
+ *
+ *    Functionality: Fetches RAN function DB from E2AP DB using
+ *       RAN function ID
+ *
+ * @params[in] RAN Function ID
+ * @return RAN Function DB
+ *         NULL, in case of failure
+ *
+ * ****************************************************************/
+RanFunction *fetchRanFuncFromRanFuncId(DuDb *duDb, uint16_t ranFuncId)
+{
+   RanFunction *ranFuncDb = NULLP;
+
+   /* Fetch RAN Function DB */
+   if(duDb->ranFunction[ranFuncId-1].id == ranFuncId)
+   {
+      ranFuncDb = &duDb->ranFunction[ranFuncId-1];
+   }
+   else
+   {
+      DU_LOG("\nERROR  -->  DU_APP : fetchRanFuncFromRanFuncId: Invalid RAN Function ID[%d]", ranFuncId);
+   }
+
+   return ranFuncDb;
+}
+
+/*******************************************************************
+ *
+ * @brief Fetch subscripton DB
+ *
+ * @details
+ *
+ *    Function : fetchSubsInfoFromRicReqId
+ *
+ *    Functionality: Fetches subscription DB from RAN Function DB
+ *       using RIC Request ID
+ *
+ * @params[in] RIC Request ID
+ *             RAN Function DB
+ *             Pointer to RIC Subscription node to be searched
+ * @return RIC Subscription from RAN Function's subcription list
+ *         NULL, in case of failure
+ *
+ * ****************************************************************/
+RicSubscription *fetchSubsInfoFromRicReqId(RicRequestId ricReqId, RanFunction *ranFuncDb)
+{
+   uint8_t subsIdx = 0;
+   RicSubscription *ricSubscriptionInfo = NULLP;
+
+   for(subsIdx = 0; subsIdx < ranFuncDb->numOfSubscription; subsIdx++)
+   {
+      if((ranFuncDb->subscriptionList[subsIdx].requestId.requestorId == ricReqId.requestorId) &&
+            (ranFuncDb->subscriptionList[subsIdx].requestId.instanceId == ricReqId.instanceId))
+      {
+         ricSubscriptionInfo = &ranFuncDb->subscriptionList[subsIdx];
+         break;
+      }
+   }
+   return ricSubscriptionInfo;
+}
+
+/*******************************************************************
+ *
+ * @brief Fetch Action details
+ *
+ * @details
+ *
+ *    Function : fetchActionInfoFromActionId
+ *
+ *    Functionality: Fetch action details from RIC subscription DB
+ *       using action ID
+ *
+ * @params[in] Action ID
+ *             RIC Subscription DB
+ * @return Action Info DB
+ *         NULL, in case of failure
+ *
+ * ****************************************************************/
+ActionInfo *fetchActionInfoFromActionId(uint8_t actionId, RicSubscription *ricSubscriptionInfo)
+{
+   ActionInfo *actionInfoDb = NULLP;
+   if(ricSubscriptionInfo->actionSequence[actionId].actionId == actionId)
+   {
+      actionInfoDb = &ricSubscriptionInfo->actionSequence[actionId];
+   }
+   else
+   {
+      DU_LOG("\nERROR  -->  E2AP : fetchActionInfoFromActionId: Action Id [%d] not found in \
+         subscription info [Requestor id : %d] [Instance Id : %d]", actionId,\
+         ricSubscriptionInfo->requestId.requestorId, ricSubscriptionInfo->requestId.instanceId);
+
+   }
+   return actionInfoDb;
+}
+
 /*******************************************************************
  *
  * @brief deallocate memory allocated in E2 Node Config Update Failure
@@ -310,9 +412,8 @@ uint8_t BuildAndSendE2NodeConfigUpdateFailure(uint32_t duId, uint8_t transId, ui
 
 void ProcE2NodeConfigUpdate(uint32_t duId, E2nodeConfigurationUpdate_t *e2NodeConfigUpdate)
 {
-   uint8_t ieIdx = 0, duIdx = 0;
+   uint8_t ieIdx = 0;
    uint8_t transId = 0, e2NodeUpdateListIdx=0;
-   DuDb    *duDb = NULLP;
    E2nodeComponentConfigUpdate_List_t *e2NodeUpdateList=NULLP;
    E2nodeComponentConfigUpdate_ItemIEs_t *e2NodeUpdateItemIe=NULLP;
    E2nodeComponentConfigUpdate_Item_t *e2NodeUpdateItem =NULLP;
@@ -1107,9 +1208,10 @@ uint8_t fillActionToBeSetup(RICaction_ToBeSetup_ItemIEs_t *actionItem, RicSubscr
       actionItem->value.present =  RICaction_ToBeSetup_ItemIEs__value_PR_RICaction_ToBeSetup_Item;
       
       /* RIC Action ID */
-      actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionID = ricActionId++;
+      actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionID = ricActionId;
       ricSubsDb->actionSequence[ricActionId].actionId = \
          actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionID;
+      ricActionId++;
 
       /* RIC Action Type */
       actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionType = RICactionType_report;
@@ -1476,12 +1578,14 @@ uint8_t BuildAndSendRicSubscriptionReq(DuDb *duDb)
 
 void ProcRicSubscriptionResponse(uint32_t duId, RICsubscriptionResponse_t  *ricSubscriptionRsp)
 {
-   uint8_t duIdx = 0, ieIdx = 0,subsIdx = 0, notAdmitIdx = 0;
+   uint8_t duIdx = 0, ieIdx = 0, notAdmitIdx = 0;
    uint8_t ranFuncId = 0, actionId = 0;
    DuDb *duDb = NULLP;
    bool ricReqIdDecoded = false;
    RicRequestId ricReqId;
    RanFunction  *ranFuncDb = NULLP;
+   RicSubscription *ricSubs = NULLP;
+   ActionInfo *action = NULLP;
    RICsubscriptionResponse_IEs_t *ricSubsRspIe = NULLP;
    RICaction_NotAdmitted_List_t *notAdmitList = NULLP;
 
@@ -1517,11 +1621,8 @@ void ProcRicSubscriptionResponse(uint32_t duId, RICsubscriptionResponse_t  *ricS
                   case ProtocolIE_IDE2_id_RANfunctionID:
                      {
                         ranFuncId = ricSubsRspIe->value.choice.RANfunctionID;
-                        if(duDb->ranFunction[ranFuncId-1].id == ranFuncId)
-                        {
-                           ranFuncDb = &duDb->ranFunction[ranFuncId-1];
-                        }
-                        else
+                        ranFuncDb = fetchRanFuncFromRanFuncId(duDb, ranFuncId);
+                        if(!ranFuncDb)
                         {
                            DU_LOG("\nERROR  -->  E2AP : ProcRicSubscriptionResponse: RAN Function ID [%d] not found", ranFuncId);
                            return;
@@ -1543,22 +1644,18 @@ void ProcRicSubscriptionResponse(uint32_t duId, RICsubscriptionResponse_t  *ricS
                            actionId = ((RICaction_NotAdmitted_ItemIEs_t *)(notAdmitList->list.array[notAdmitIdx]))->\
                               value.choice.RICaction_NotAdmitted_Item.ricActionID;
 
-                              /* Remove action from RAN Function's subscription list */
-                              for(subsIdx = 0; subsIdx < ranFuncDb->numOfSubscription; subsIdx++)
+                           /* Remove action from RAN Function's subscription list */
+                           ricSubs = fetchSubsInfoFromRicReqId(ricReqId, ranFuncDb);
+                           if(ricSubs)
+                           {
+                              action = fetchActionInfoFromActionId(actionId, ricSubs);
+                              if(action)
                               {
-                                 if((ranFuncDb->subscriptionList[subsIdx].requestId.requestorId == ricReqId.requestorId) &&
-                                       (ranFuncDb->subscriptionList[subsIdx].requestId.instanceId == ricReqId.instanceId))
-                                 {
-                                    if(ranFuncDb->subscriptionList[subsIdx].actionSequence[actionId].actionId == actionId)
-                                    {
-                                       memset(&ranFuncDb->subscriptionList[subsIdx].actionSequence[actionId], 0, \
-                                          sizeof(ActionInfo));
-                                       ranFuncDb->subscriptionList[subsIdx].actionSequence[actionId].actionId = -1;
-                                       ranFuncDb->subscriptionList[subsIdx].numOfActions--;
-                                       break;
-                                    }
-                                 }
+                                 memset(action, 0, sizeof(ActionInfo));
+                                 ricSubs->actionSequence[actionId].actionId = -1;
+                                 ricSubs->numOfActions--;
                               }
+                           }
                         }
                         break;
                      }
@@ -1624,6 +1721,7 @@ void FreeE2SetupFailure(E2AP_PDU_t *e2apMsg)
 
 uint8_t BuildAndSendE2SetupFailure(uint32_t duId, uint8_t transId)
 {
+   uint8_t            ret = RFAILED;
    E2AP_PDU_t         *e2apMsg = NULL;
    E2setupFailure_t   *e2SetupFailure;
    asn_enc_rval_t     encRetVal;
@@ -1727,10 +1825,13 @@ uint8_t BuildAndSendE2SetupFailure(uint32_t duId, uint8_t transId)
          DU_LOG("\nERROR  -->  E2AP : Sending E2 Setup Failure failed");
          break;
       }
+
+      ret = ROK;
       break;
    }
 
    FreeE2SetupFailure(e2apMsg);
+   return ret;
 }
 
 /*******************************************************************
@@ -1926,8 +2027,7 @@ uint8_t BuildAndSendResetResponse(uint32_t duId, uint8_t transId)
       if(e2apMsg->choice.successfulOutcome == NULLP)
       {
          DU_LOG("\nERROR  -->  E2AP : BuildAndSendResetResponse: Memory allocation failed for successfulOutcome");
-         RIC_FREE(e2apMsg, sizeof(E2AP_PDU_t));
-         return RFAILED;
+         break;
       }
  
       e2apMsg->choice.successfulOutcome->procedureCode = ProcedureCodeE2_id_Reset;
@@ -1972,7 +2072,7 @@ uint8_t BuildAndSendResetResponse(uint32_t duId, uint8_t transId)
       {
          DU_LOG("\nERROR  -->  E2AP : Could not encode E2 reset response structure (at %s)\n",\
                encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
-         return RFAILED;
+         break;
       }
       else
       {
@@ -1987,7 +2087,7 @@ uint8_t BuildAndSendResetResponse(uint32_t duId, uint8_t transId)
       if(SendE2APMsg(RIC_APP_MEM_REG, RIC_POOL, duId) != ROK)
       {
          DU_LOG("\nERROR  -->  E2AP : Failed to send E2 Reset Response");
-         return RFAILED;
+         break;
       }
 
       ret = ROK;
@@ -1995,7 +2095,7 @@ uint8_t BuildAndSendResetResponse(uint32_t duId, uint8_t transId)
    }while(true);
 
    FreeE2ResetResponse(e2apMsg);
-   return ROK;
+   return ret;
 }
 
 /*******************************************************************
@@ -2015,9 +2115,8 @@ uint8_t BuildAndSendResetResponse(uint32_t duId, uint8_t transId)
 
 uint8_t ProcE2ResetReq(uint32_t duId, ResetRequestE2_t  *resetReq)
 {
-   uint8_t ieIdx = 0, duIdx = 0;
+   uint8_t ieIdx = 0;
    uint8_t transId = 0, cause = 0;
-   DuDb    *duDb = NULLP;
 
    if(resetReq)
    {
@@ -2769,6 +2868,7 @@ void ProcRicServiceUpdate(uint32_t duId, RICserviceUpdate_t *ricServiceUpdate)
    int8_t transId =-1;
    uint8_t duIdx = 0, elementCnt =0, arrIdx = 0; 
    uint16_t ranFuncIdx = 0, failedRanFuncCount=0, recvdRanFuncCount=0;
+   RanFunction *ranFuncDb = NULLP;
    RANfunction_ItemIEs_t *ranFuncItemIe =NULL;
    RANfunction_Item_t  *ranFuncItem =NULL;
    RANfunctionID_Item_t  *ranFuncIdItem=NULL;
@@ -2856,7 +2956,7 @@ void ProcRicServiceUpdate(uint32_t duId, RICserviceUpdate_t *ricServiceUpdate)
                   {
                      ranFuncItemIe = (RANfunction_ItemIEs_t *) ranFuncList->list.array[ranFuncIdx];
                      ranFuncItem = &ranFuncItemIe->value.choice.RANfunction_Item;
-                     if(duDb->ranFunction[ranFuncItem->ranFunctionID-1].id != ranFuncItem->ranFunctionID)
+                     if(fetchRanFuncFromRanFuncId(duDb, ranFuncItem->ranFunctionID) == NULLP)
                      {
                         /* Calculating total number of ran fuctions which are not present */
                         failedRanFuncCount++;
@@ -2892,9 +2992,10 @@ void ProcRicServiceUpdate(uint32_t duId, RICserviceUpdate_t *ricServiceUpdate)
                   {
                      delRanFuncItem  = (RANfunctionID_ItemIEs_t*) deleteList->list.array[ranFuncIdx];
                      ranFuncIdItem = &delRanFuncItem->value.choice.RANfunctionID_Item;
-                     if(duDb->ranFunction[ranFuncIdItem->ranFunctionID-1].id == ranFuncIdItem->ranFunctionID)
+                     ranFuncDb = fetchRanFuncFromRanFuncId(duDb, ranFuncIdItem->ranFunctionID);
+                     if(ranFuncDb)
                      {
-                        memset(&duDb->ranFunction[ranFuncIdItem->ranFunctionID-1], 0, sizeof(RanFunction));
+                        memset(ranFuncDb, 0, sizeof(RanFunction));
                         duDb->numOfRanFunction--; 
                      }
 
@@ -2953,9 +3054,9 @@ uint8_t ProcRicSubscriptionFailure(uint32_t duId, RICsubscriptionFailure_t *ricS
 {
    uint8_t ieIdx = 0, duIdx = 0, subsIdx = 0;
    uint8_t ranFuncId = 0;
-   bool   ricReqIdDecoded = false;
    DuDb    *duDb = NULLP;
    RanFunction *ranFuncDb = NULLP;
+   RicSubscription *ricSubs = NULLP;
    RicRequestId ricReqId;
    RICsubscriptionFailure_IEs_t *ricSubsFailIe = NULLP;
 
@@ -2984,15 +3085,25 @@ uint8_t ProcRicSubscriptionFailure(uint32_t duId, RICsubscriptionFailure_t *ricS
                   {
                      ricReqId.requestorId = ricSubsFailIe->value.choice.RICrequestID.ricRequestorID;
                      ricReqId.instanceId = ricSubsFailIe->value.choice.RICrequestID.ricInstanceID;
-                     ricReqIdDecoded = true;
                      break;
                   }
                   case ProtocolIE_IDE2_id_RANfunctionID:
                   {
                      ranFuncId = ricSubsFailIe->value.choice.RANfunctionID;
-                     if(duDb->ranFunction[ranFuncId-1].id == ranFuncId)
+                     ranFuncDb = fetchRanFuncFromRanFuncId(duDb, ranFuncId);
+                     if(!ranFuncDb)
                      {
-                        ranFuncDb = &duDb->ranFunction[ranFuncId-1];
+                        DU_LOG("\nERROR  -->  E2AP : ProcRicSubscriptionFailure : RAN Function Id [%d] not found", ranFuncId);
+                        return RFAILED;
+                     }
+                     else
+                     {
+                        /* Remove subscription entry from RAN Function */
+                        ricSubs = fetchSubsInfoFromRicReqId(ricReqId, ranFuncDb);
+                        if(ricSubs)
+                        {
+                           memset(&ranFuncDb->subscriptionList[subsIdx], 0, sizeof(RicSubscription));
+                        }
                      }
                      break; 
                   }
@@ -3000,26 +3111,690 @@ uint8_t ProcRicSubscriptionFailure(uint32_t duId, RICsubscriptionFailure_t *ricS
                   default:
                      /* No handling required as of now since this is a stub */
                      break;
-
                }
             }
          }
+      }
+   }
+   return ROK;
+}
+
+/*******************************************************************
+ *
+ * @brief Free memory for RIC Subscription Modification Confirm
+ *
+ * @details
+ *
+ *    Function : FreeRicSubsModConfirm
+ *
+ * Functionality: Free memory for RIC subscription modification
+ *    confirm
+ *
+ * @param E2AP Message PDU to be freed
+ * @return Void
+ *
+ ******************************************************************/
+void FreeRicSubsModConfirm(E2AP_PDU_t *e2apMsg)
+{
+   uint8_t ieIdx = 0, arrIdx=0;
+   RICsubscriptionModificationConfirm_t *ricSubsModCfm = NULLP;
+   RICsubscriptionModificationConfirm_IEs_t *ricSubsModCfmIe = NULLP;
+   RICactions_ConfirmedForModification_List_t *modCfmList = NULLP;
+   RICactions_RefusedToBeModified_List_t *modRefusedList = NULLP;
+   RICactions_ConfirmedForRemoval_List_t *rmvCfmList = NULLP;
+   RICactions_RefusedToBeRemoved_List_t *rmvFailList = NULLP;
 
-         /* Remove subscription entry from RAN Function */
-         if(ranFuncDb && ricReqIdDecoded)
+   if(e2apMsg)
+   {
+      if(e2apMsg->choice.successfulOutcome)
+      {
+         ricSubsModCfm = &e2apMsg->choice.successfulOutcome->value.choice.RICsubscriptionModificationConfirm;
+         if(ricSubsModCfm->protocolIEs.list.array)
          {
-            for(subsIdx = 0; subsIdx < ranFuncDb->numOfSubscription; subsIdx++)
+            for(ieIdx = 0; ieIdx < ricSubsModCfm->protocolIEs.list.count; ieIdx++)
             {
-               if((ranFuncDb->subscriptionList[subsIdx].requestId.requestorId == ricReqId.requestorId) &&
-                     (ranFuncDb->subscriptionList[subsIdx].requestId.instanceId == ricReqId.instanceId))
+               if(ricSubsModCfm->protocolIEs.list.array[ieIdx])
                {
-                  memset(&ranFuncDb->subscriptionList[subsIdx], 0, sizeof(RicSubscription));
-                  break;
+                  ricSubsModCfmIe = ricSubsModCfm->protocolIEs.list.array[ieIdx];
+                  switch(ricSubsModCfmIe->id)
+                  {
+                     case ProtocolIE_IDE2_id_RICactionsConfirmedForModification_List:
+                        {
+                           modCfmList = &ricSubsModCfmIe->value.choice.RICactions_ConfirmedForModification_List;
+                           if(modCfmList->list.array)
+                           {
+                              for(arrIdx = 0; arrIdx < modCfmList->list.count; arrIdx++)
+                              {
+                                 RIC_FREE(modCfmList->list.array[arrIdx], \
+                                    sizeof(RICaction_ConfirmedForModification_ItemIEs_t));
+                              }
+                              RIC_FREE(modCfmList->list.array,  modCfmList->list.size);
+                           }
+                           break;
+                        }
+
+                     case ProtocolIE_IDE2_id_RICactionsRefusedToBeModified_List:
+                        {
+                           modRefusedList = &ricSubsModCfmIe->value.choice.RICactions_RefusedToBeModified_List;
+                           if(modRefusedList->list.array)
+                           {
+                              for(arrIdx = 0; arrIdx < modRefusedList->list.count; arrIdx++)
+                              {
+                                 RIC_FREE(modRefusedList->list.array[arrIdx], \
+                                       sizeof(RICaction_RefusedToBeModified_ItemIEs_t));
+                              }
+                              RIC_FREE(modRefusedList->list.array,  modRefusedList->list.size);
+                           }
+                           break;
+                        }
+
+                     case ProtocolIE_IDE2_id_RICactionsConfirmedForRemoval_List:
+                        {
+                           rmvCfmList = &ricSubsModCfmIe->value.choice.RICactions_ConfirmedForRemoval_List;
+                           if(rmvCfmList->list.array)
+                           {
+                              for(arrIdx = 0; arrIdx < rmvCfmList->list.count; arrIdx++)
+                              {
+                                 RIC_FREE(rmvCfmList->list.array[arrIdx], \
+                                       sizeof(RICaction_ConfirmedForRemoval_ItemIEs_t));
+                              }
+                              RIC_FREE(rmvCfmList->list.array,  rmvCfmList->list.size);
+                           }
+                           break;
+                        }
+
+                     case ProtocolIE_IDE2_id_RICactionsRefusedToBeRemoved_List:
+                        {
+                           rmvFailList = &ricSubsModCfmIe->value.choice.RICactions_RefusedToBeRemoved_List;
+                           if(rmvFailList->list.array)
+                           {
+                              for(arrIdx = 0; arrIdx < rmvFailList->list.count; arrIdx++)
+                              {
+                                 RIC_ALLOC(rmvFailList->list.array[arrIdx], \
+                                    sizeof(RICaction_RefusedToBeRemoved_ItemIEs_t));
+                              }
+                              RIC_FREE(rmvFailList->list.array,  rmvFailList->list.size);
+                           }
+                           break;
+                        }
+
+                     default:
+                        break;
+
+                  }
+                  RIC_FREE(ricSubsModCfmIe, sizeof(RICsubscriptionModificationConfirm_IEs_t));
                }
             }
+            RIC_FREE(ricSubsModCfm->protocolIEs.list.array, ricSubsModCfm->protocolIEs.list.size);
          }
+         RIC_FREE(e2apMsg->choice.successfulOutcome , sizeof(SuccessfulOutcomeE2_t));
+      }
+      RIC_FREE(e2apMsg, sizeof(E2AP_PDU_t));
+   }
+}
+
+/*******************************************************************
+ *
+ * @brief Fill the list of actions confirmed for modification
+ *
+ * @details
+ *
+ *    Function : fillActionModConfirmedList
+ *
+ * Functionality: Fill the list of actions confirmed for modification
+ *
+ * @param List to be filled
+ *        Number of actions
+ *        Source list of actions
+ * @return ROK - success
+ *         RFAILED - failure
+ *
+ ******************************************************************/
+uint8_t fillActionModConfirmedList(RICactions_ConfirmedForModification_List_t *modCfmList, uint8_t numActions, \
+   uint8_t *actionModifiedList)
+{
+   uint8_t arrIdx = 0;
+   RICaction_ConfirmedForModification_ItemIEs_t *modCfmListItem = NULLP;
+
+   modCfmList->list.count = numActions;
+   modCfmList->list.size = numActions * sizeof(RICaction_ConfirmedForModification_ItemIEs_t *);
+   RIC_ALLOC(modCfmList->list.array,  modCfmList->list.size);
+   if(!modCfmList->list.array)
+   {
+      DU_LOG("\nERROR  -->  E2AP : Memory allocation failed for %s at line %d", __func__, __LINE__);
+      return RFAILED;
+   }
+
+   for(arrIdx = 0; arrIdx < modCfmList->list.count; arrIdx++)
+   {
+      RIC_ALLOC(modCfmList->list.array[arrIdx], sizeof(RICaction_ConfirmedForModification_ItemIEs_t));
+      if(!modCfmList->list.array[arrIdx])
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed for %s at line %d", __func__, __LINE__);
+         return RFAILED;
       }
+
+      modCfmListItem = (RICaction_ConfirmedForModification_ItemIEs_t *)modCfmList->list.array[arrIdx];
+      modCfmListItem->id = ProtocolIE_IDE2_id_RICaction_ConfirmedForModification_Item;
+      modCfmListItem->criticality = CriticalityE2_ignore;
+      modCfmListItem->value.present = \
+         RICaction_ConfirmedForModification_ItemIEs__value_PR_RICaction_ConfirmedForModification_Item;
+      modCfmListItem->value.choice.RICaction_ConfirmedForModification_Item.ricActionID = actionModifiedList[arrIdx];
    }
+
+   return ROK;
+}
+
+/*******************************************************************
+ *
+ * @brief Fill the list of actions refused to be modified
+ *
+ * @details
+ *
+ *    Function : fillActionModRefusedList
+ *
+ * Functionality: Fill the list of actions refused to be modified
+ *
+ * @param List to be filled
+ *        Number of list
+ *        Source list of actions refused tobe modified
+ * @return ROK - success
+ *         RFAILED - failure
+ *
+ ******************************************************************/
+uint8_t fillActionModRefusedList(RICactions_RefusedToBeModified_List_t *modRefusedList, uint8_t numActions, \
+   ActionFailed *actionModFailedList)
+{
+   uint8_t arrIdx = 0;
+   RICaction_RefusedToBeModified_ItemIEs_t *modRefusedListItem = NULLP;
+
+   modRefusedList->list.count = numActions;
+   modRefusedList->list.size = numActions * sizeof(RICaction_RefusedToBeModified_ItemIEs_t *);
+   RIC_ALLOC(modRefusedList->list.array,  modRefusedList->list.size);
+   if(!modRefusedList->list.array)
+   {
+      DU_LOG("\nERROR  -->  E2AP : Memory allocation failed for %s at line %d", __func__, __LINE__);
+      return RFAILED;
+   }
+
+   for(arrIdx = 0; arrIdx < modRefusedList->list.count; arrIdx++)
+   {
+      RIC_ALLOC(modRefusedList->list.array[arrIdx], sizeof(RICaction_RefusedToBeModified_ItemIEs_t));
+      if(!modRefusedList->list.array[arrIdx])
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed for %s at line %d", __func__, __LINE__);
+         return RFAILED;
+      }
+
+      modRefusedListItem = (RICaction_RefusedToBeModified_ItemIEs_t *)modRefusedList->list.array[arrIdx];
+      modRefusedListItem->id = ProtocolIE_IDE2_id_RICaction_RefusedToBeModified_Item;
+      modRefusedListItem->criticality = CriticalityE2_ignore;
+      modRefusedListItem->value.present = \
+         RICaction_RefusedToBeModified_ItemIEs__value_PR_RICaction_RefusedToBeModified_Item;
+      modRefusedListItem->value.choice.RICaction_RefusedToBeModified_Item.ricActionID = \
+         actionModFailedList[arrIdx].actionId;
+      fillE2FailureCause(&modRefusedListItem->value.choice.RICaction_RefusedToBeModified_Item.cause, \
+         actionModFailedList[arrIdx].failureType, actionModFailedList[arrIdx].cause);
+   }
+
+   return ROK;
+}
+
+/*******************************************************************
+ *
+ * @brief Fill the list of action confirmed for removal
+ *
+ * @details
+ *
+ *    Function : fillActionRemovalConfirmedList
+ *
+ * Functionality: Fill the list of action confirmed for removal
+ *
+ * @param List to be filled
+ *        Number of actions
+ *        Source list of actions removed
+ * @return ROK - success
+ *         RFAILED - failure
+ *
+ ******************************************************************/
+uint8_t fillActionRemovalConfirmedList(RICactions_ConfirmedForRemoval_List_t *rmvCfmList, uint8_t numActions, \
+   uint8_t *actionRemovedList)
+{
+   uint8_t arrIdx = 0;
+   RICaction_ConfirmedForRemoval_ItemIEs_t *rmvCfmListItem = NULLP;
+
+   rmvCfmList->list.count = numActions;
+   rmvCfmList->list.size = numActions * sizeof(RICaction_ConfirmedForRemoval_ItemIEs_t *);
+   RIC_ALLOC(rmvCfmList->list.array,  rmvCfmList->list.size);
+   if(!rmvCfmList->list.array)
+   {
+      DU_LOG("\nERROR  -->  E2AP : Memory allocation failed for %s at line %d", __func__, __LINE__);
+      return RFAILED;
+   }
+
+   for(arrIdx = 0; arrIdx < rmvCfmList->list.count; arrIdx++)
+   {
+      RIC_ALLOC(rmvCfmList->list.array[arrIdx], sizeof(RICaction_ConfirmedForRemoval_ItemIEs_t));
+      if(!rmvCfmList->list.array[arrIdx])
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed for %s at line %d", __func__, __LINE__);
+         return RFAILED;
+      }
+
+      rmvCfmListItem = (RICaction_ConfirmedForRemoval_ItemIEs_t *)rmvCfmList->list.array[arrIdx];
+      rmvCfmListItem->id = ProtocolIE_IDE2_id_RICaction_ConfirmedForRemoval_Item;
+      rmvCfmListItem->criticality = CriticalityE2_ignore;
+      rmvCfmListItem->value.present = \
+         RICaction_ConfirmedForRemoval_ItemIEs__value_PR_RICaction_ConfirmedForRemoval_Item;
+      rmvCfmListItem->value.choice.RICaction_ConfirmedForRemoval_Item.ricActionID = actionRemovedList[arrIdx];
+   }
+
+   return ROK;
+}
+
+/*******************************************************************
+ *
+ * @brief Fill the list of actions refused to be removed
+ *
+ * @details
+ *
+ *    Function : fillActionRemovalRefusedList
+ *
+ * Functionality: Fill the list of actions refused to be removed
+ *
+ * @param List to be filled
+ *        Number of list
+ *        Source list of actions refused to be removed
+ * @return ROK - success
+ *         RFAILED - failure
+ *
+ ******************************************************************/
+uint8_t fillActionRemovalRefusedList(RICactions_RefusedToBeRemoved_List_t *rmvFailList, \
+   uint8_t numActions, ActionFailed *actionRmvlFailList)
+{
+   uint8_t arrIdx = 0;
+   RICaction_RefusedToBeRemoved_ItemIEs_t *rmvFailListItem = NULLP;
+
+   rmvFailList->list.count = numActions;
+   rmvFailList->list.size = numActions * sizeof(RICaction_RefusedToBeRemoved_ItemIEs_t *);
+   RIC_ALLOC(rmvFailList->list.array,  rmvFailList->list.size);
+   if(!rmvFailList->list.array)
+   {
+      DU_LOG("\nERROR  -->  E2AP : Memory allocation failed for %s at line %d", __func__, __LINE__);
+      return RFAILED;
+   }
+
+   for(arrIdx = 0; arrIdx < rmvFailList->list.count; arrIdx++)
+   {
+      RIC_ALLOC(rmvFailList->list.array[arrIdx], sizeof(RICaction_RefusedToBeRemoved_ItemIEs_t));
+      if(!rmvFailList->list.array[arrIdx])
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed for %s at line %d", __func__, __LINE__);
+         return RFAILED;
+      }
+
+      rmvFailListItem = (RICaction_RefusedToBeRemoved_ItemIEs_t *)rmvFailList->list.array[arrIdx];
+      rmvFailListItem->id = ProtocolIE_IDE2_id_RICaction_RefusedToBeRemoved_Item;
+      rmvFailListItem->criticality = CriticalityE2_ignore;
+      rmvFailListItem->value.present = \
+         RICaction_RefusedToBeRemoved_ItemIEs__value_PR_RICaction_RefusedToBeRemoved_Item;
+      rmvFailListItem->value.choice.RICaction_RefusedToBeRemoved_Item.ricActionID = actionRmvlFailList[arrIdx].actionId;
+      fillE2FailureCause(&rmvFailListItem->value.choice.RICaction_RefusedToBeRemoved_Item.cause, \
+         actionRmvlFailList[arrIdx].failureType, actionRmvlFailList[arrIdx].cause);
+   }
+
+   return ROK;
+
+}
+
+/*******************************************************************
+ *
+ * @brief Build And Send RIC Subscription Modification Refuse
+ *
+ * @details
+ *
+ *    Function : BuildAndSendRicSubsModRefuse
+ *
+ * Functionality: Build And Send RIC Subscription Modification Refuse
+ *
+ * @param DU ID
+ *        RIC Request ID of subscription
+ *        RAN Function ID
+ *        Type of failure
+ *        Cause of failure
+ * @return ROK - success
+ *         RFAILED - failure
+ *
+ ******************************************************************/
+uint8_t BuildAndSendRicSubsModConfirm(uint32_t duId, RicRequestId ricReqId, uint16_t ranFuncId, RicTmpActionList tmpActionList)
+{
+   uint8_t ieIdx = 0, elementCnt = 0;
+   uint8_t ret = RFAILED;
+   E2AP_PDU_t *e2apMsg = NULLP;
+   asn_enc_rval_t encRetVal;
+   RICsubscriptionModificationConfirm_t *ricSubsModCfm = NULLP;
+   RICsubscriptionModificationConfirm_IEs_t *ricSubsModCfmIe = NULLP;
+
+   DU_LOG("\nINFO   -->  E2AP : Building RIC Subscription Modification Confirm\n");
+   while(true)
+   {
+      RIC_ALLOC(e2apMsg, sizeof(E2AP_PDU_t));
+      if(e2apMsg == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed for %s at line %d", __func__, __LINE__);
+         break;
+      }
+
+      /* Successful Outcome */
+      e2apMsg->present =  E2AP_PDU_PR_successfulOutcome;
+      RIC_ALLOC(e2apMsg->choice.successfulOutcome , sizeof(SuccessfulOutcomeE2_t));
+      if(e2apMsg->choice.successfulOutcome == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed for %s at line %d", __func__, __LINE__);
+         break;
+      }
+
+      e2apMsg->choice.successfulOutcome->procedureCode = ProcedureCodeE2_id_RICsubscriptionModificationRequired;
+      e2apMsg->choice.successfulOutcome->criticality = CriticalityE2_reject;
+      e2apMsg->choice.successfulOutcome->value.present = \
+         SuccessfulOutcomeE2__value_PR_RICsubscriptionModificationConfirm;
+      ricSubsModCfm = &e2apMsg->choice.successfulOutcome->value.choice.RICsubscriptionModificationConfirm;
+
+      elementCnt = 2;
+      if(tmpActionList.numActionModified)
+         elementCnt++;
+      if(tmpActionList.numActionModFailed)
+         elementCnt++;
+      if(tmpActionList.numActionRemoved)
+         elementCnt++;
+      if(tmpActionList.numActionRemovalFailed)
+         elementCnt++;
+
+      ricSubsModCfm->protocolIEs.list.count = elementCnt;
+      ricSubsModCfm->protocolIEs.list.size = elementCnt * sizeof(RICsubscriptionModificationConfirm_IEs_t *);
+      RIC_ALLOC(ricSubsModCfm->protocolIEs.list.array, ricSubsModCfm->protocolIEs.list.size);
+      if(!ricSubsModCfm->protocolIEs.list.array)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed for %s at line %d", __func__, __LINE__);
+         break;
+      }
+
+      for(ieIdx = 0; ieIdx < elementCnt; ieIdx++)
+      {
+         RIC_ALLOC(ricSubsModCfm->protocolIEs.list.array[ieIdx], sizeof(RICsubscriptionModificationConfirm_IEs_t));
+         if(!ricSubsModCfm->protocolIEs.list.array[ieIdx])
+         {
+            DU_LOG("\nERROR  -->  E2AP : Memory allocation failed for %s at line %d", __func__, __LINE__);
+            break;
+         }
+      }
+      
+      /* RIC Request ID */
+      ieIdx = 0;
+      ricSubsModCfmIe = ricSubsModCfm->protocolIEs.list.array[ieIdx];
+      ricSubsModCfmIe->id = ProtocolIE_IDE2_id_RICrequestID;
+      ricSubsModCfmIe->criticality = CriticalityE2_reject;
+      ricSubsModCfmIe->value.present = RICsubscriptionModificationConfirm_IEs__value_PR_RICrequestID;
+      ricSubsModCfmIe->value.choice.RICrequestID.ricRequestorID = ricReqId.requestorId;
+      ricSubsModCfmIe->value.choice.RICrequestID.ricInstanceID = ricReqId.instanceId;
+
+      /* RAN Function ID */
+      ieIdx++;
+      ricSubsModCfmIe = ricSubsModCfm->protocolIEs.list.array[ieIdx];
+      ricSubsModCfmIe->id = ProtocolIE_IDE2_id_RANfunctionID;
+      ricSubsModCfmIe->criticality = CriticalityE2_reject;
+      ricSubsModCfmIe->value.present = RICsubscriptionModificationConfirm_IEs__value_PR_RANfunctionID;
+      ricSubsModCfmIe->value.choice.RANfunctionID = ranFuncId;
+
+      /* RIC Actions List confirmed for modification */
+      if(tmpActionList.numActionModified)
+      {
+         ieIdx++;
+         ricSubsModCfmIe = ricSubsModCfm->protocolIEs.list.array[ieIdx];
+         ricSubsModCfmIe->id = ProtocolIE_IDE2_id_RICactionsConfirmedForModification_List;
+         ricSubsModCfmIe->criticality = CriticalityE2_ignore;
+         ricSubsModCfmIe->value.present = \
+            RICsubscriptionModificationConfirm_IEs__value_PR_RICactions_ConfirmedForModification_List;
+         if(fillActionModConfirmedList(&ricSubsModCfmIe->value.choice.RICactions_ConfirmedForModification_List, \
+            tmpActionList.numActionModified, tmpActionList.actionModifiedList) != ROK)
+         {
+            DU_LOG("\nERROR  -->  E2AP : %s: Failed to fill RIC Actions Confirmed for Modification List", __func__);
+            break;
+         }
+      }
+
+      /* RIC Actions List refured to be modified */
+      if(tmpActionList.numActionModFailed)
+      {
+         ieIdx++;
+         ricSubsModCfmIe = ricSubsModCfm->protocolIEs.list.array[ieIdx];
+         ricSubsModCfmIe->id = ProtocolIE_IDE2_id_RICactionsRefusedToBeModified_List;
+         ricSubsModCfmIe->criticality = CriticalityE2_ignore;
+         ricSubsModCfmIe->value.present = \
+            RICsubscriptionModificationConfirm_IEs__value_PR_RICactions_RefusedToBeModified_List;
+         if(fillActionModRefusedList(&ricSubsModCfmIe->value.choice.RICactions_RefusedToBeModified_List, \
+            tmpActionList.numActionModFailed, tmpActionList.actionModFailedList) != ROK)
+         {
+            DU_LOG("\nERROR  -->  E2AP : %s: Failed to fill RIC Actions Refused to be Modified List", __func__);
+            break;
+         }
+      }
+
+      /* RIC Actions List confirmed for removal */
+      if(tmpActionList.numActionRemoved)
+      {
+         ieIdx++;
+         ricSubsModCfmIe = ricSubsModCfm->protocolIEs.list.array[ieIdx];
+         ricSubsModCfmIe->id = ProtocolIE_IDE2_id_RICactionsConfirmedForRemoval_List;
+         ricSubsModCfmIe->criticality = CriticalityE2_ignore;
+         ricSubsModCfmIe->value.present = \
+            RICsubscriptionModificationConfirm_IEs__value_PR_RICactions_ConfirmedForRemoval_List;
+         if(fillActionRemovalConfirmedList(&ricSubsModCfmIe->value.choice.RICactions_ConfirmedForRemoval_List, \
+            tmpActionList.numActionRemoved, tmpActionList.actionRemovedList) != ROK)
+         {
+            DU_LOG("\nERROR  -->  E2AP : %s: Failed to fill RIC Actions Confirmed for Removal List", __func__);
+            break;
+         }
+      }
+
+      /* RIC Actions List Refused to be removed */
+      if(tmpActionList.numActionRemovalFailed)
+      {
+         ieIdx++;
+         ricSubsModCfmIe = ricSubsModCfm->protocolIEs.list.array[ieIdx];
+         ricSubsModCfmIe->id = ProtocolIE_IDE2_id_RICactionsRefusedToBeRemoved_List;
+         ricSubsModCfmIe->criticality = CriticalityE2_ignore;
+         ricSubsModCfmIe->value.present = \
+            RICsubscriptionModificationConfirm_IEs__value_PR_RICactions_RefusedToBeRemoved_List;
+         if(fillActionRemovalRefusedList(&ricSubsModCfmIe->value.choice.RICactions_RefusedToBeRemoved_List, \
+            tmpActionList.numActionRemovalFailed, tmpActionList.actionRemovalFailedList) != ROK)
+         {
+            DU_LOG("\nERROR  -->  E2AP : %s: Failed to fill RIC Actions Failed to be Removed List", __func__);
+            break;
+         }
+      }
+
+      /* Print and encode E2AP Message PDU */
+      xer_fprint(stdout, &asn_DEF_E2AP_PDU, e2apMsg);
+      memset(encBuf, 0, ENC_BUF_MAX_LEN);
+      encBufSize = 0;
+      encRetVal = aper_encode(&asn_DEF_E2AP_PDU, 0, e2apMsg, PrepFinalEncBuf, encBuf);
+
+      /* Check encode results */
+      if(encRetVal.encoded == ENCODE_FAIL)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Could not encode RIC subscription modification confirm (at %s)\n",\
+               encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
+         break;
+      }
+      else
+      {
+         DU_LOG("\nDEBUG  -->  E2AP : Created APER encoded buffer for RIC subscription modification confirm\n");
+         for(int i=0; i< encBufSize; i++)
+         {
+            DU_LOG("%x",encBuf[i]);
+         }
+      }
+
+      if(SendE2APMsg(RIC_APP_MEM_REG, RIC_POOL, duId) != ROK)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Failed to send RIC Subscription Modification Confirm");
+         break;
+      }
+
+      ret =ROK;
+      break;
+   }
+
+   FreeRicSubsModConfirm(e2apMsg);
+   return ret;
+}
+
+/*******************************************************************
+ *
+ * @brief Processing of RIC Subscription Modification Required
+ *
+ * @details
+ *
+ *    Function : ProcRicSubsModReqd
+ *
+ * Functionality: Processing of RIC Subscription Modification Required
+ *    As of now, we do not identify any scenario where this message
+ *    shall be sent by DU. Hence, bare minimum handling has been
+ *    done here.
+ *
+ * @param  DU ID
+ *         RIC Subscription Modification Required IEs
+ * @return ROK-success
+ *         RFAILED-failure
+ *
+ ******************************************************************/
+uint8_t ProcRicSubsModReqd(uint32_t duId, RICsubscriptionModificationRequired_t *ricSubsModReqd)
+{
+   uint8_t ieIdx = 0, actionIdx = 0, duIdx = 0;
+   DuDb    *duDb = NULLP;
+   uint16_t ranFuncId;
+   uint16_t actionId;
+   RicRequestId ricReqId;
+   RanFunction *ranFuncDb = NULLP;
+   RicSubscription *ricSubs = NULLP;
+   ActionInfo *action = NULLP;
+   RICsubscriptionModificationRequired_IEs_t *ricSubsModReqdIe = NULLP;
+   RICactions_RequiredToBeModified_List_t *actionToBeModList = NULLP;
+   RICactions_RequiredToBeRemoved_List_t  *actionToBeRmvList = NULLP;
+   RICaction_RequiredToBeModified_ItemIEs_t *actionToBeMod = NULLP;
+   RICaction_RequiredToBeRemoved_ItemIEs_t *actionToBeRmv = NULLP;
+   RicTmpActionList tmpActionList;
+
+   memset(&ricReqId, 0, sizeof(RicRequestId));
+   memset(&tmpActionList, 0, sizeof(RicTmpActionList));
+
+   SEARCH_DU_DB(duIdx, duId, duDb);
+   if(duDb == NULLP)
+   {
+      DU_LOG("\nERROR  -->  E2AP : duDb is not present for duId %d",duId);
+      return RFAILED;
+   }
+
+   for(ieIdx = 0; ieIdx < ricSubsModReqd->protocolIEs.list.count; ieIdx++)
+   {
+      ricSubsModReqdIe = ricSubsModReqd->protocolIEs.list.array[ieIdx];
+      switch(ricSubsModReqdIe->id)
+      {
+         case ProtocolIE_IDE2_id_RICrequestID:
+            {
+               ricReqId.requestorId = ricSubsModReqdIe->value.choice.RICrequestID.ricRequestorID;
+               ricReqId.instanceId = ricSubsModReqdIe->value.choice.RICrequestID.ricInstanceID;
+               break;
+            }
+         case ProtocolIE_IDE2_id_RANfunctionID:
+            {
+               ranFuncId = ricSubsModReqdIe->value.choice.RANfunctionID;
+               ranFuncDb = fetchRanFuncFromRanFuncId(duDb, ranFuncId);
+               if(!ranFuncDb)
+               {
+                  /* If RIC Subscription not found, send RIC Subscription modification refuse to DU */
+                  DU_LOG("\nERROR  -->  E2AP : ProcRicSubsModReqd: RIC Subscription not found");
+                  //BuildAndSendRicSubsModRefuse(duId, ricReqId, ranFuncId, CauseE2_PR_ricRequest, \
+                     CauseE2RICrequest_request_id_unknown);
+                  return RFAILED;
+               }
+
+               ricSubs = fetchSubsInfoFromRicReqId(ricReqId, ranFuncDb);
+               if(!ricSubs)
+               {
+                  /* If RAN Function not found, send RIC Subscription modification refuse to DU */
+                  DU_LOG("\nERROR  -->  E2AP : ProcRicSubsModReqd: RAN Function ID [%d] not found",ranFuncId);
+                  //BuildAndSendRicSubsModRefuse(duId, ricReqId, ranFuncId, \
+                     CauseE2_PR_ricRequest, CauseE2RICrequest_ran_function_id_invalid);
+                  return RFAILED; 
+               }
+               break;
+            }
+         case ProtocolIE_IDE2_id_RICactionsRequiredToBeModified_List:
+            {
+               actionToBeModList = &ricSubsModReqdIe->value.choice.RICactions_RequiredToBeModified_List;
+               for(actionIdx = 0; actionIdx < actionToBeModList->list.count; actionIdx++)
+               {
+                  actionToBeMod = (RICaction_RequiredToBeModified_ItemIEs_t *)actionToBeModList->list.array[actionIdx];
+                  actionId = actionToBeMod->value.choice.RICaction_RequiredToBeModified_Item.ricActionID;
+                  action = fetchActionInfoFromActionId(actionId, ricSubs);
+                  if(action)
+                  {
+                     /* No modification required as of now, hence directly adding to the list */
+                     tmpActionList.actionModifiedList[tmpActionList.numActionModified++] = actionId;
+                  }
+                  else
+                  {
+                     tmpActionList.actionModFailedList[tmpActionList.numActionModFailed].actionId = actionId;
+                     tmpActionList.actionModFailedList[tmpActionList.numActionModFailed].failureType = \
+                        CauseE2_PR_ricRequest;
+                     tmpActionList.actionModFailedList[tmpActionList.numActionModFailed].cause = \
+                        CauseE2RICrequest_action_not_supported;
+                     tmpActionList.numActionModFailed++;
+                  }
+               }
+               break;
+            }
+         case ProtocolIE_IDE2_id_RICactionsRequiredToBeRemoved_List:
+            {
+               actionToBeRmvList = &ricSubsModReqdIe->value.choice.RICactions_RequiredToBeRemoved_List;
+               for(actionIdx = 0; actionIdx < actionToBeRmvList->list.count; actionIdx++)
+               {
+                  actionToBeRmv = (RICaction_RequiredToBeRemoved_ItemIEs_t *)actionToBeRmvList->list.array[actionIdx];
+                  actionId = actionToBeRmv->value.choice.RICaction_RequiredToBeRemoved_Item.ricActionID;
+                  action = fetchActionInfoFromActionId(actionId, ricSubs);
+                  if(action)
+                  {
+                     tmpActionList.actionRemovedList[tmpActionList.numActionRemoved++] = actionId;
+                     memset(action, 0, sizeof(ActionInfo));
+                     action->actionId = -1;
+                     ricSubs->numOfActions--;
+                  }
+               }
+               break;
+            }
+         default:
+            break;
+      }
+   }
+
+   /* If none of the action modification/removal is supported, 
+    *   send RIC Subscription Modification Refuse
+    * Else
+    *   send RIC Subscription Modification Confirm
+    */
+   if(tmpActionList.numActionModified || tmpActionList.numActionRemoved)
+   {
+      BuildAndSendRicSubsModConfirm(duId, ricReqId, ranFuncId, tmpActionList);
+   }
+   else
+   {
+      // TO BE DONE IN FUTURE GERRITS
+      //BuildAndSendRicSubsModRefuse(duId, ricReqId, ranFuncId, CauseE2_PR_ricRequest, \
+      CauseE2RICrequest_action_not_supported);
+   }
+   
    return ROK;
 }
 
@@ -3489,6 +4264,14 @@ void E2APMsgHdlr(uint32_t *duId, Buffer *mBuf)
                      ProcRicServiceUpdate(*duId,  &e2apMsg->choice.initiatingMessage->value.choice.RICserviceUpdate);
                      break;
                   }
+               case InitiatingMessageE2__value_PR_RICsubscriptionModificationRequired:
+                  {
+                     DU_LOG("\nINFO  -->  E2AP : RIC Subscription Modification Required");
+                     ProcRicSubsModReqd(*duId, \
+                           &e2apMsg->choice.initiatingMessage->value.choice.RICsubscriptionModificationRequired);
+                     break;
+                  }
+
                case InitiatingMessageE2__value_PR_ErrorIndicationE2:
                   {
                      DU_LOG("\nINFO  -->  E2AP : Error indication received");