+
+ /* If the UE is in handover, UE context modification request is to be sent to
+ * source DU once UE context setup response is received from target DU */
+ if(ueCb->state == UE_HANDOVER_IN_PROGRESS)
+ {
+ DuDb *srcDuDb = NULLP;
+ CuUeCb *ueCbInSrcDu = NULLP;
+
+ /* Since Source DU Id and DU UE F1AP ID assigned to UE by source DU is not known here, we
+ * need to find Source DU and UE CB in source DU using CU UE F1AP ID */
+ for(duIdx=0; duIdx < cuCb.numDu; duIdx++)
+ {
+ /* UE context setup response is received from target DU. Search all
+ * DUs to find source DU except this target DU Id.*/
+ if(cuCb.duInfo[duIdx].duId != duId)
+ {
+ for(ueIdx = 0; ueIdx < MAX_NUM_UE; ueIdx++)
+ {
+ /* Check following:
+ * 1. CU UE F1AP ID in srcDU->ueCb should be same as cuUeF1apId
+ * received in UE context setup response since CU UE F1AP ID does not
+ * change for UE in handover.
+ * 2. srcDU->UeCb->uestate should be UE_HANDOVER_IN_PROGRESS
+ */
+ if((cuCb.duInfo[duIdx].ueCb[ueIdx].gnbCuUeF1apId == cuUeF1apId) &&
+ (cuCb.duInfo[duIdx].ueCb[ueIdx].state == UE_HANDOVER_IN_PROGRESS))
+ {
+ srcDuDb = &cuCb.duInfo[duIdx];
+ ueCbInSrcDu = &cuCb.duInfo[duIdx].ueCb[ueIdx];
+
+ /* Store source DU info in the new UE context created in
+ * tareget DU */
+ ueCb->hoInfo.sourceDuId = srcDuDb->duId;
+
+ /* Copy the received container to UeCb */
+ memcpy(&ueCbInSrcDu->f1apMsgDb.duToCuContainer, duToCuRrcContainer, sizeof(OCTET_STRING_t));
+
+ if(BuildAndSendUeContextModificationReq(srcDuDb->duId, ueCbInSrcDu, STOP_DATA_TX) != ROK)
+ {
+ DU_LOG("\nERROR -> F1AP : Failed at BuildAndSendUeContextModificationReq()");
+ return RFAILED;
+ }
+ break;
+ }
+ }
+ }
+ if(srcDuDb && ueCbInSrcDu)
+ break;
+ }
+ }
+ else
+ {
+ ueCb->f1apMsgDb.dlRrcMsgCount++;
+ rrcMsgType = setDlRRCMsgType(ueCb);
+
+ DU_LOG("\nINFO --> F1AP: Sending DL RRC MSG for RRC reconfiguration");
+ if(BuildAndSendDLRRCMessageTransfer(duId, ueCb, SRB1, rrcMsgType) != ROK)
+ {
+ DU_LOG("\nINFO --> F1AP: Failed to build and send DL RRC MSG for RRC reconfiguration");
+ return RFAILED;
+ }
+ }
+