ulInfo->list.array[idx]->uLUPTNLInformation.choice.gTPTunnel->gTP_TEID.buf[0] = 0;
ulInfo->list.array[idx]->uLUPTNLInformation.choice.gTPTunnel->gTP_TEID.buf[1] = 0;
ulInfo->list.array[idx]->uLUPTNLInformation.choice.gTPTunnel->gTP_TEID.buf[2] = 0;
- ulInfo->list.array[idx]->uLUPTNLInformation.choice.gTPTunnel->gTP_TEID.buf[3] = cuCb.cuCfgParams.egtpParams.egtpAssoc[duId-1].currTunnelId++;
+ ulInfo->list.array[idx]->uLUPTNLInformation.choice.gTPTunnel->gTP_TEID.buf[3] = cuCb.cuCfgParams.egtpParams.currTunnelId++;
ulUpTnlInfo->teId[0] = ulInfo->list.array[idx]->uLUPTNLInformation.choice.gTPTunnel->gTP_TEID.buf[0];
ulUpTnlInfo->teId[1] = ulInfo->list.array[idx]->uLUPTNLInformation.choice.gTPTunnel->gTP_TEID.buf[1];
* ****************************************************************/
uint8_t procUeContextSetupResponse(uint32_t duId, F1AP_PDU_t *f1apMsg)
{
- uint8_t duIdx=0, idx, duUeF1apId;
- DuDb *duDb;
- CuUeCb *ueCb;
+ uint8_t duIdx = 0, idx = 0, ueIdx = 0;
+ uint8_t duUeF1apId = 0, cuUeF1apId = 0;
+ DuDb *duDb = NULLP;
+ CuUeCb *ueCb = NULLP;
UEContextSetupResponse_t *ueCtxtSetupRsp = NULLP;
SEARCH_DU_DB(duIdx, duId, duDb);
{
switch(ueCtxtSetupRsp->protocolIEs.list.array[idx]->id)
{
+ case ProtocolIE_ID_id_gNB_CU_UE_F1AP_ID:
+ {
+ cuUeF1apId = ueCtxtSetupRsp->protocolIEs.list.array[idx]->value.choice.GNB_CU_UE_F1AP_ID;
+ break;
+ }
case ProtocolIE_ID_id_gNB_DU_UE_F1AP_ID:
{
duUeF1apId = ueCtxtSetupRsp->protocolIEs.list.array[idx]->value.choice.GNB_DU_UE_F1AP_ID;
ueCb = &duDb->ueCb[duUeF1apId-1];
+ /* If ue context is not present in du db, then create UE context
+ * here. This flow is hit in case of UE handover where UE
+ * context is created before UE performs RACH on target DU */
+ if(ueCb->gnbDuUeF1apId == 0)
+ {
+ /* Creating UE context in target DU */
+ memset(ueCb, 0, sizeof(CuUeCb));
+ ueCb->cellCb = &duDb->cellCb[0];
+ ueCb->gnbDuUeF1apId = duUeF1apId;
+ ueCb->gnbCuUeF1apId = cuUeF1apId;
+ ueCb->state = UE_HANDOVER_IN_PROGRESS;
+ ueCb->hoInfo.targetDuId = duId;
+ (duDb->numUe)++;
+
+ ueCb->cellCb->ueCb[ueCb->cellCb->numUe] = ueCb;
+ ueCb->cellCb->numUe++;
+ }
+ break;
+ }
+ case ProtocolIE_ID_id_C_RNTI:
+ {
+ ueCb->crnti = ueCtxtSetupRsp->protocolIEs.list.array[idx]->value.choice.C_RNTI;
break;
}
case ProtocolIE_ID_id_DRBs_Setup_List:
}
}
}
+
ueCb->f1apMsgDb.dlRrcMsgCount++; /* keeping DL RRC Msg Count */
+
+ /* 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;
+ if(BuildAndSendUeContextModificationReq(srcDuDb->duId, ueCbInSrcDu, STOP_DATA_TX) != ROK)
+ {
+ DU_LOG("\nERROR -> F1AP : Failed at BuildAndSendUeContextModificationReq()");
+ return RFAILED;
+ }
+ break;
+ }
+ }
+ }
+ if(srcDuDb && ueCbInSrcDu)
+ break;
+ }
+ }
return ROK;
}
else
{
ulInfo->list.array[arrIdx]->uLUPTNLInformation.choice.gTPTunnel->\
- gTP_TEID.buf[3] = cuCb.cuCfgParams.egtpParams.egtpAssoc[duId-1].currTunnelId++;
+ gTP_TEID.buf[3] = cuCb.cuCfgParams.egtpParams.currTunnelId++;
}
ulTnlInfo->teId[0] = ulInfo->list.array[arrIdx]->uLUPTNLInformation.choice.gTPTunnel->gTP_TEID.buf[0];
CuUeCb *ueCb = (CuUeCb *)cuUeCb;
F1AP_PDU_t *f1apMsg = NULLP;
UEContextModificationRequest_t *ueContextModifyReq = NULLP;
- action =RESTART_DATA_TX;
asn_enc_rval_t encRetVal;
DU_LOG("\nINFO --> F1AP : Building Ue context modification request\n");
while(1)
* ****************************************************************/
uint8_t procUeContextModificationResponse(uint32_t duId, F1AP_PDU_t *f1apMsg)
{
- uint8_t idx=0, duIdx=0, duUeF1apId;
- DuDb *duDb;
- CuUeCb *ueCb;
+ uint8_t idx=0, duIdx=0;
+ uint8_t duUeF1apId = 0, cuUeF1apId = 0;
+ DuDb *duDb = NULLP;
+ CuUeCb *ueCb = NULLP;
UEContextModificationResponse_t *ueCtxtModRsp = NULLP;
SEARCH_DU_DB(duIdx, duId, duDb);
{
switch(ueCtxtModRsp->protocolIEs.list.array[idx]->id)
{
+ case ProtocolIE_ID_id_gNB_CU_UE_F1AP_ID:
+ {
+ cuUeF1apId = ueCtxtModRsp->protocolIEs.list.array[idx]->value.choice.GNB_CU_UE_F1AP_ID;
+ break;
+ }
case ProtocolIE_ID_id_gNB_DU_UE_F1AP_ID:
{
duUeF1apId = ueCtxtModRsp->protocolIEs.list.array[idx]->value.choice.GNB_DU_UE_F1AP_ID;
}
}
+
+ /* If UE is in handover and UE context is not yet created at target DU, then send
+ * UE context setup request to target DU */
if(ueCb->state == UE_HANDOVER_IN_PROGRESS)
{
- BuildAndSendUeContextSetupReq(ueCb->hoInfo.targetDuId, ueCb, 0, NULLP);
- return ROK;
+ uint8_t ueIdx = 0;
+ DuDb *tgtDuDb = NULLP;
+ CuUeCb *ueCbInTgtDu = NULLP;
+
+ SEARCH_DU_DB(duIdx, ueCb->hoInfo.targetDuId, tgtDuDb);
+ if(tgtDuDb)
+ {
+ /* Since DU UE F1AP ID assigned by target DU to this UE in handover is
+ * not known here, using CU UE F1AP ID to search for UE Cb in target DU
+ * DB */
+ for(ueIdx = 0; ueIdx < MAX_NUM_UE; ueIdx++)
+ {
+ if(tgtDuDb->ueCb[ueIdx].gnbCuUeF1apId == cuUeF1apId)
+ {
+ ueCbInTgtDu = &tgtDuDb->ueCb[ueIdx];
+ break;
+ }
+ }
+
+ /* If UE context is not found in Target DU DU, send UE context setup
+ * request */
+ if(ueCbInTgtDu == NULLP)
+ {
+ if((BuildAndSendUeContextSetupReq(ueCb->hoInfo.targetDuId, ueCb, 0, NULLP)) != ROK)
+ {
+ DU_LOG("\nERROR -> F1AP : Failed at BuildAndSendUeContextSetupReq");
+ return RFAILED;
+ }
+ }
+ }
}
return ROK;
Code Review / o-du / l2.git / blobdiff