[Epic-ID: ODUHIGH-406][Task-ID: ODUHIGH-423]Fix for incorrect access of schCb instance
[o-du/l2.git] / src / 5gnrmac / lwr_mac_fsm.c
index 4fea616..5f8e049 100644 (file)
@@ -52,8 +52,10 @@ LwrMacCb lwrMacCb;
 
 uint8_t UnrestrictedSetNcsTable[MAX_ZERO_CORR_CFG_IDX];
 void fapiMacConfigRsp(uint16_t cellId);
-uint16_t sendTxDataReq(SlotIndInfo currTimingInfo, DlSchedInfo *dlInfo, p_fapi_api_queue_elem_t prevElem);
-uint16_t fillUlTtiReq(SlotIndInfo currTimingInfo, p_fapi_api_queue_elem_t prevElem);
+uint16_t sendTxDataReq(SlotTimingInfo currTimingInfo, DlSchedInfo *dlInfo, p_fapi_api_queue_elem_t prevElem);
+uint16_t fillUlTtiReq(SlotTimingInfo currTimingInfo, p_fapi_api_queue_elem_t prevElem);
+uint16_t fillUlDciReq(SlotTimingInfo currTimingInfo, p_fapi_api_queue_elem_t prevElem);
+uint8_t lwr_mac_procStopReqEvt(SlotTimingInfo slotInfo, p_fapi_api_queue_elem_t  prevElem);
 
 void lwrMacLayerInit(Region region, Pool pool)
 {
@@ -96,6 +98,9 @@ void lwrMacLayerInit(Region region, Pool pool)
  * ****************************************************************/
 uint8_t lwr_mac_procInvalidEvt(void *msg)
 {
+#ifdef CALL_FLOW_DEBUG_LOG
+   DU_LOG("\nCall Flow: ENTMAC -> ENTLWRMAC : INVALID_EVENT\n");
+#endif
    DU_LOG("\nERROR  -->  LWR_MAC: Error Indication Event[%d] received in state [%d]", lwrMacCb.event, lwrMacCb.phyState);
    return ROK;
 }
@@ -1323,6 +1328,10 @@ void setMibPdu(uint8_t *mibPdu, uint32_t *val, uint16_t sfn)
 uint8_t lwr_mac_procParamReqEvt(void *msg)
 {
 #ifdef INTEL_FAPI
+#ifdef CALL_FLOW_DEBUG_LOG 
+   DU_LOG("\nCall Flow: ENTMAC -> ENTLWRMAC : PARAM_REQ\n");
+#endif
+
    /* startGuardTimer(); */
    fapi_param_req_t         *paramReq = NULL;
    fapi_msg_header_t        *msgHeader;
@@ -1985,6 +1994,9 @@ uint8_t lwr_mac_procIqSamplesReqEvt(void *msg)
 uint8_t lwr_mac_procConfigReqEvt(void *msg)
 {
 #ifdef INTEL_FAPI
+#ifdef CALL_FLOW_DEBUG_LOG
+   DU_LOG("\nCall Flow: ENTMAC -> ENTLWRMAC : CONFIG_REQ\n");
+#endif
 #ifdef NR_TDD
    uint8_t slotIdx = 0; 
    uint8_t symbolIdx =0;
@@ -2277,6 +2289,9 @@ uint8_t lwr_mac_procConfigRspEvt(void *msg)
 uint8_t lwr_mac_procStartReqEvt(void *msg)
 {
 #ifdef INTEL_FAPI
+#ifdef CALL_FLOW_DEBUG_LOG
+   DU_LOG("\nCall Flow: ENTMAC -> ENTLWRMAC : START_REQ\n");
+#endif
    fapi_msg_header_t *msgHeader;
    fapi_start_req_t *startReq;
    fapi_vendor_msg_t *vendorMsg;
@@ -2356,19 +2371,18 @@ uint8_t lwr_mac_procStartReqEvt(void *msg)
  *
  ********************************************************************/
 
-uint8_t lwr_mac_procStopReqEvt(void *msg)
+uint8_t lwr_mac_procStopReqEvt(SlotTimingInfo slotInfo, p_fapi_api_queue_elem_t  prevElem)
 {
 #ifdef INTEL_FAPI
-   SlotIndInfo       *slotInfo;
-   fapi_msg_header_t *msgHeader;
+#ifdef CALL_FLOW_DEBUG_LOG
+   DU_LOG("\nCall Flow: ENTMAC -> ENTLWRMAC : STOP_REQ\n");
+#endif
+
    fapi_stop_req_t   *stopReq;
    fapi_vendor_msg_t *vendorMsg;
-   p_fapi_api_queue_elem_t  headerElem;
    p_fapi_api_queue_elem_t  stopReqElem;
    p_fapi_api_queue_elem_t  vendorMsgElem;
 
-   slotInfo = (SlotIndInfo *)msg;
-
    /* Allocte And fill Vendor msg */
    LWR_MAC_ALLOC(vendorMsgElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_vendor_msg_t)));
    if(!vendorMsgElem)
@@ -2379,8 +2393,8 @@ uint8_t lwr_mac_procStopReqEvt(void *msg)
    FILL_FAPI_LIST_ELEM(vendorMsgElem, NULLP, FAPI_VENDOR_MESSAGE, 1, sizeof(fapi_vendor_msg_t));
    vendorMsg = (fapi_vendor_msg_t *)(vendorMsgElem + 1);
    fillMsgHeader(&vendorMsg->header, FAPI_VENDOR_MESSAGE, sizeof(fapi_vendor_msg_t));
-   vendorMsg->stop_req_vendor.sfn = slotInfo->sfn;
-   vendorMsg->stop_req_vendor.slot = slotInfo->slot;
+   vendorMsg->stop_req_vendor.sfn = slotInfo.sfn;
+   vendorMsg->stop_req_vendor.slot = slotInfo.slot;
 
    /* Fill FAPI stop req */
    LWR_MAC_ALLOC(stopReqElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_stop_req_t)));
@@ -2396,24 +2410,9 @@ uint8_t lwr_mac_procStopReqEvt(void *msg)
    memset(stopReq, 0, sizeof(fapi_stop_req_t));
    fillMsgHeader(&stopReq->header, FAPI_STOP_REQUEST, sizeof(fapi_stop_req_t));
 
-   /* Fill message header */
-   LWR_MAC_ALLOC(headerElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_msg_header_t)));
-   if(!headerElem)
-   {
-      DU_LOG("\nERROR  -->  LWR_MAC: Memory allocation failed for header in stop req");
-      LWR_MAC_FREE(stopReqElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_stop_req_t)));
-      LWR_MAC_FREE(vendorMsgElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_vendor_msg_t)));
-      return RFAILED;
-   }
-   FILL_FAPI_LIST_ELEM(headerElem, stopReqElem, FAPI_VENDOR_MSG_HEADER_IND, 1, \
-      sizeof(fapi_msg_header_t));
-   msgHeader = (fapi_msg_header_t *)(headerElem + 1);
-   msgHeader->num_msg = 2; /* Stop req msg and vendor specific msg */
-   msgHeader->handle = 0;
-
    /* Send to PHY */
    DU_LOG("\nINFO  -->  LWR_MAC: Sending Stop Request to Phy");
-   LwrMacSendToL1(headerElem);
+   prevElem->p_next = stopReqElem;
 
 #endif
    return ROK;
@@ -2535,8 +2534,7 @@ void fillSib1DlDciPdu(fapi_dl_dci_t *dlDciPtr, PdcchCfg *sib1PdcchInfo)
        * Spec 38.214 Sec 5.1.2.2.2
        */
       coreset0Size= sib1PdcchInfo->coresetCfg.coreSetSize;
-      rbStart = 0;              /* For SIB1 */
-      //rbStart = sib1PdcchInfo->dci.pdschCfg->pdschFreqAlloc.freqAlloc.startPrb;
+      rbStart = sib1PdcchInfo->dci.pdschCfg->pdschFreqAlloc.freqAlloc.startPrb;
       rbLen = sib1PdcchInfo->dci.pdschCfg->pdschFreqAlloc.freqAlloc.numPrb;
 
       if((rbLen >=1) && (rbLen <= coreset0Size - rbStart))
@@ -2551,10 +2549,8 @@ void fillSib1DlDciPdu(fapi_dl_dci_t *dlDciPtr, PdcchCfg *sib1PdcchInfo)
       }
 
       /* Fetching DCI field values */
-      timeDomResAssign = sib1PdcchInfo->dci.pdschCfg->pdschTimeAlloc.
-        rowIndex -1;
-      VRB2PRBMap       = sib1PdcchInfo->dci.pdschCfg->pdschFreqAlloc.\
-                        vrbPrbMapping;
+      timeDomResAssign = sib1PdcchInfo->dci.pdschCfg->pdschTimeAlloc.rowIndex -1;
+      VRB2PRBMap       = sib1PdcchInfo->dci.pdschCfg->pdschFreqAlloc.vrbPrbMapping;
       modNCodScheme    = sib1PdcchInfo->dci.pdschCfg->codeword[0].mcsIndex;
       redundancyVer    = sib1PdcchInfo->dci.pdschCfg->codeword[0].rvIndex;
       sysInfoInd       = 0;           /* 0 for SIB1; 1 for SI messages */
@@ -2674,8 +2670,7 @@ void fillRarDlDciPdu(fapi_dl_dci_t *dlDciPtr, PdcchCfg *rarPdcchInfo)
 
       /* TODO: Fill values of coreset0Size, rbStart and rbLen */
       coreset0Size= rarPdcchInfo->coresetCfg.coreSetSize;
-      rbStart = 0;              /* For SIB1 */
-      //rbStart = rarPdcchInfo->dci.pdschCfg->freqAlloc.rbStart;
+      rbStart = rarPdcchInfo->dci.pdschCfg->pdschFreqAlloc.freqAlloc.startPrb;
       rbLen = rarPdcchInfo->dci.pdschCfg->pdschFreqAlloc.freqAlloc.numPrb;
 
       if((rbLen >=1) && (rbLen <= coreset0Size - rbStart))
@@ -2690,7 +2685,7 @@ void fillRarDlDciPdu(fapi_dl_dci_t *dlDciPtr, PdcchCfg *rarPdcchInfo)
       }
 
       /* Fetching DCI field values */
-      timeDomResAssign = rarPdcchInfo->dci.pdschCfg->pdschTimeAlloc.rowIndex -1;
+      timeDomResAssign = rarPdcchInfo->dci.pdschCfg->pdschTimeAlloc.rowIndex;
       VRB2PRBMap       = rarPdcchInfo->dci.pdschCfg->pdschFreqAlloc.vrbPrbMapping;
       modNCodScheme    = rarPdcchInfo->dci.pdschCfg->codeword[0].mcsIndex;
       tbScaling        = 0; /* configured to 0 scaling */
@@ -2927,8 +2922,8 @@ void fillDlMsgDlDciPdu(fapi_dl_dci_t *dlDciPtr, PdcchCfg *pdcchInfo,\
  * @return ROK
  *
  ******************************************************************/
-uint8_t fillPdcchPdu(fapi_dl_tti_req_pdu_t *dlTtiReqPdu, DlSchedInfo *dlInfo, \
-      RntiType rntiType, uint8_t coreSetType)
+uint8_t fillPdcchPdu(fapi_dl_tti_req_pdu_t *dlTtiReqPdu, DlSchedInfo *dlInfo, int8_t dlMsgSchInfoIdx, \
+      RntiType rntiType, uint8_t coreSetType, uint8_t ueIdx)
 {
    if(dlTtiReqPdu != NULLP)
    {
@@ -2938,27 +2933,27 @@ uint8_t fillPdcchPdu(fapi_dl_tti_req_pdu_t *dlTtiReqPdu, DlSchedInfo *dlInfo, \
       memset(&dlTtiReqPdu->pdu.pdcch_pdu, 0, sizeof(fapi_dl_pdcch_pdu_t));
       if(rntiType == SI_RNTI_TYPE)
       {
-        pdcchInfo = &dlInfo->brdcstAlloc.sib1Alloc.sib1PdcchCfg;
-        bwp = &dlInfo->brdcstAlloc.sib1Alloc.bwp;
-        fillSib1DlDciPdu(dlTtiReqPdu->pdu.pdcch_pdu.dlDci, pdcchInfo);
+         pdcchInfo = &dlInfo->brdcstAlloc.sib1Alloc.sib1PdcchCfg;
+         bwp = &dlInfo->brdcstAlloc.sib1Alloc.bwp;
+         fillSib1DlDciPdu(dlTtiReqPdu->pdu.pdcch_pdu.dlDci, pdcchInfo);
       }
       else if(rntiType == RA_RNTI_TYPE)
       {
-        pdcchInfo = &dlInfo->rarAlloc->rarPdcchCfg;
-        bwp = &dlInfo->rarAlloc->bwp;
-        fillRarDlDciPdu(dlTtiReqPdu->pdu.pdcch_pdu.dlDci, pdcchInfo);
+         pdcchInfo = &dlInfo->rarAlloc[ueIdx]->rarPdcchCfg;
+         bwp = &dlInfo->rarAlloc[ueIdx]->bwp;
+         fillRarDlDciPdu(dlTtiReqPdu->pdu.pdcch_pdu.dlDci, pdcchInfo);
       }
       else if(rntiType == TC_RNTI_TYPE || rntiType == C_RNTI_TYPE)
       {
-         pdcchInfo = &dlInfo->dlMsgAlloc->dlMsgPdcchCfg;
-        bwp = &dlInfo->dlMsgAlloc->bwp;
+         pdcchInfo = &dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[dlMsgSchInfoIdx].dlMsgPdcchCfg;
+         bwp = &dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[dlMsgSchInfoIdx].bwp;
          fillDlMsgDlDciPdu(dlTtiReqPdu->pdu.pdcch_pdu.dlDci, pdcchInfo,\
-           &dlInfo->dlMsgAlloc->dlMsgInfo);
+               &dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[dlMsgSchInfoIdx].dlMsgInfo);
       }
       else
       {
-        DU_LOG("\nERROR  -->  LWR_MAC: Failed filling PDCCH Pdu");
-        return RFAILED;
+         DU_LOG("\nERROR  -->  LWR_MAC: Failed filling PDCCH Pdu");
+         return RFAILED;
       }
       dlTtiReqPdu->pduType = PDCCH_PDU_TYPE;
       dlTtiReqPdu->pdu.pdcch_pdu.bwpSize = bwp->freqAlloc.numPrb;
@@ -2975,7 +2970,7 @@ uint8_t fillPdcchPdu(fapi_dl_tti_req_pdu_t *dlTtiReqPdu, DlSchedInfo *dlInfo, \
       dlTtiReqPdu->pdu.pdcch_pdu.precoderGranularity = pdcchInfo->coresetCfg.precoderGranularity;
       dlTtiReqPdu->pdu.pdcch_pdu.numDlDci = pdcchInfo->numDlDci;
       dlTtiReqPdu->pdu.pdcch_pdu.coreSetType = coreSetType;
-                    
+
       /* Calculating PDU length. Considering only one dl dci pdu for now */
       dlTtiReqPdu->pduSize = sizeof(fapi_dl_pdcch_pdu_t);
    }
@@ -3080,33 +3075,47 @@ void fillPdschPdu(fapi_dl_tti_req_pdu_t *dlTtiReqPdu, PdschCfg *pdschInfo,
 uint8_t calcDlTtiReqPduCount(DlSchedInfo *dlInfo)
 {
    uint8_t count = 0;
-   uint8_t idx = 0;
+   uint8_t idx = 0, ueIdx=0;
 
    if(dlInfo->isBroadcastPres)
    {
       if(dlInfo->brdcstAlloc.ssbTrans)
       {
-        for(idx = 0; idx < dlInfo->brdcstAlloc.ssbIdxSupported; idx++)
-        {
-           /* SSB PDU is filled */
-           count++;
-        }
+         for(idx = 0; idx < dlInfo->brdcstAlloc.ssbIdxSupported; idx++)
+         {
+            /* SSB PDU is filled */
+            count++;
+         }
       }
       if(dlInfo->brdcstAlloc.sib1Trans)
       {
-        /* PDCCH and PDSCH PDU is filled */
-        count += 2;
+         /* PDCCH and PDSCH PDU is filled */
+         count += 2;
       }
    }
-   if(dlInfo->rarAlloc != NULLP)
-   {
-      /* PDCCH and PDSCH PDU is filled */
-      count += 2;
-   }
-   if(dlInfo->dlMsgAlloc != NULLP)
+
+   for(ueIdx=0; ueIdx<MAX_NUM_UE; ueIdx++)
    {
-      /* PDCCH and PDSCH PDU is filled */
-      count += 2;
+      if(dlInfo->rarAlloc[ueIdx] != NULLP)
+      {
+         /* PDCCH and PDSCH PDU is filled */
+         if(dlInfo->rarAlloc[ueIdx]->pduPres == BOTH)
+            count += 2;
+         else
+            count += 1;
+      }
+
+      if(dlInfo->dlMsgAlloc[ueIdx] != NULLP)
+      {
+         for(idx=0; idx<dlInfo->dlMsgAlloc[ueIdx]->numSchedInfo; idx++)
+         {
+         /* PDCCH and PDSCH PDU is filled */
+         if(dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].pduPres == BOTH)
+            count += 2;
+         else if(dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].pduPres != NONE)
+            count += 1;
+         }
+      }
    }
    return count;
 }
@@ -3128,22 +3137,32 @@ uint8_t calcDlTtiReqPduCount(DlSchedInfo *dlInfo)
  * ********************************************************************/
 uint8_t calcTxDataReqPduCount(DlSchedInfo *dlInfo)
 {
-   uint8_t count = 0;
+   uint8_t idx = 0, count = 0, ueIdx=0;
 
    if(dlInfo->isBroadcastPres && dlInfo->brdcstAlloc.sib1Trans)
    {
       count++;
    }
-   if(dlInfo->rarAlloc != NULLP)
-   {
-      count++;
-   }
-   if(dlInfo->dlMsgAlloc != NULLP)
+   
+   for(ueIdx=0; ueIdx<MAX_NUM_UE; ueIdx++)
    {
-      count++;
+      if((dlInfo->rarAlloc[ueIdx] != NULLP) && \
+            ((dlInfo->rarAlloc[ueIdx]->pduPres == BOTH) || (dlInfo->rarAlloc[ueIdx]->pduPres == PDSCH_PDU)))
+         count++;
+
+      if(dlInfo->dlMsgAlloc[ueIdx] != NULLP)
+      {
+         for(idx=0; idx<dlInfo->dlMsgAlloc[ueIdx]->numSchedInfo; idx++)
+         {
+            if(dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].pduPres == BOTH || \
+                  dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].pduPres == PDSCH_PDU)
+               count++;
+         }
+      }
    }
    return count;
 }
+
 /***********************************************************************
  *
  * @brief fills the SIB1 TX-DATA request message
@@ -3165,7 +3184,7 @@ uint8_t calcTxDataReqPduCount(DlSchedInfo *dlInfo)
 uint8_t fillSib1TxDataReq(fapi_tx_pdu_desc_t *pduDesc, uint16_t pduIndex, MacCellCfg *macCellCfg,
       PdschCfg pdschCfg)
 {
-   uint16_t payloadSize = 0;
+   uint32_t payloadSize = 0;
    uint8_t *sib1Payload = NULLP;
    fapi_api_queue_elem_t *payloadElem = NULLP;
 #ifdef INTEL_WLS_MEM
@@ -3177,8 +3196,8 @@ uint8_t fillSib1TxDataReq(fapi_tx_pdu_desc_t *pduDesc, uint16_t pduIndex, MacCel
 
    /* fill the TLV */
    payloadSize = pdschCfg.codeword[0].tbSize;
-   pduDesc[pduIndex].tlvs[0].tl.tag = FAPI_TX_DATA_PTR_TO_PAYLOAD_64;
-   pduDesc[pduIndex].tlvs[0].tl.length = payloadSize;
+   pduDesc[pduIndex].tlvs[0].tl.tag = ((payloadSize & 0xff0000) >> 8) | FAPI_TX_DATA_PTR_TO_PAYLOAD_64;
+   pduDesc[pduIndex].tlvs[0].tl.length = (payloadSize & 0x0000ffff);
    LWR_MAC_ALLOC(sib1Payload, payloadSize);
    if(sib1Payload == NULLP)
    {
@@ -3342,16 +3361,21 @@ uint8_t fillDlMsgTxDataReq(fapi_tx_pdu_desc_t *pduDesc, uint16_t pduIndex, DlMsg
  *         RFAILED - failure
  *
  * ****************************************************************/
-uint16_t fillDlTtiReq(SlotIndInfo currTimingInfo)
+uint16_t fillDlTtiReq(SlotTimingInfo currTimingInfo)
 {
+#ifdef CALL_FLOW_DEBUG_LOG
+   DU_LOG("\nCall Flow: ENTMAC -> ENTLWRMAC : DL_TTI_REQUEST\n");
+#endif
+
 #ifdef INTEL_FAPI
    uint8_t idx =0;
    uint8_t nPdu = 0;
    uint8_t numPduEncoded = 0;
+   uint8_t  ueIdx;
    uint16_t cellIdx =0;
    uint16_t pduIndex = 0;
 
-   SlotIndInfo dlTtiReqTimingInfo;
+   SlotTimingInfo dlTtiReqTimingInfo;
    MacDlSlot *currDlSlot = NULLP;
    MacCellCfg macCellCfg;
    RntiType rntiType;
@@ -3359,6 +3383,7 @@ uint16_t fillDlTtiReq(SlotIndInfo currTimingInfo)
    fapi_msg_header_t *msgHeader = NULLP;
    p_fapi_api_queue_elem_t dlTtiElem;
    p_fapi_api_queue_elem_t headerElem;
+   p_fapi_api_queue_elem_t prevElem;
 
    if(lwrMacCb.phyState == PHY_STATE_RUNNING)
    {
@@ -3375,158 +3400,220 @@ uint16_t fillDlTtiReq(SlotIndInfo currTimingInfo)
       if(dlTtiElem)
       {
          FILL_FAPI_LIST_ELEM(dlTtiElem, NULLP, FAPI_DL_TTI_REQUEST, 1, \
-           sizeof(fapi_dl_tti_req_t));
+               sizeof(fapi_dl_tti_req_t));
 
-        /* Fill message header */
-        LWR_MAC_ALLOC(headerElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_msg_header_t)));
-        if(!headerElem)
-        {
-           DU_LOG("\nERROR  -->  LWR_MAC: Memory allocation failed for header in DL TTI req");
-           LWR_MAC_FREE(dlTtiElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_dl_tti_req_t)));
-           return RFAILED;
-        }
-        FILL_FAPI_LIST_ELEM(headerElem, dlTtiElem, FAPI_VENDOR_MSG_HEADER_IND, 1, \
-              sizeof(fapi_msg_header_t));
-        msgHeader = (fapi_msg_header_t *)(headerElem + 1);
-        msgHeader->num_msg = 1;
-        msgHeader->handle = 0;
+         /* Fill message header */
+         LWR_MAC_ALLOC(headerElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_msg_header_t)));
+         if(!headerElem)
+         {
+            DU_LOG("\nERROR  -->  LWR_MAC: Memory allocation failed for header in DL TTI req");
+            LWR_MAC_FREE(dlTtiElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_dl_tti_req_t)));
+            return RFAILED;
+         }
+         FILL_FAPI_LIST_ELEM(headerElem, dlTtiElem, FAPI_VENDOR_MSG_HEADER_IND, 1, \
+               sizeof(fapi_msg_header_t));
+         msgHeader = (fapi_msg_header_t *)(headerElem + 1);
+         msgHeader->num_msg = 1;
+         msgHeader->handle = 0;
 
          /* Fill Dl TTI Request */
-        dlTtiReq = (fapi_dl_tti_req_t *)(dlTtiElem +1);
-        memset(dlTtiReq, 0, sizeof(fapi_dl_tti_req_t));
-        fillMsgHeader(&dlTtiReq->header, FAPI_DL_TTI_REQUEST, sizeof(fapi_dl_tti_req_t));
-
-        dlTtiReq->sfn  = dlTtiReqTimingInfo.sfn;
-        dlTtiReq->slot = dlTtiReqTimingInfo.slot;
-        dlTtiReq->nPdus = calcDlTtiReqPduCount(&currDlSlot->dlInfo);  /* get total Pdus */
-        nPdu = dlTtiReq->nPdus;
-        dlTtiReq->nGroup = 0;
-        if(dlTtiReq->nPdus > 0)
-        {
-           if(currDlSlot->dlInfo.isBroadcastPres)
-           {
-              if(currDlSlot->dlInfo.brdcstAlloc.ssbTrans)
-              {
-                 if(dlTtiReq->pdus != NULLP)
-                 {
-                    for(idx = 0; idx < currDlSlot->dlInfo.brdcstAlloc.ssbIdxSupported; idx++)
-                    {
-                       fillSsbPdu(&dlTtiReq->pdus[numPduEncoded], &macCellCfg,\
-                             currDlSlot, idx, dlTtiReq->sfn);
-                       numPduEncoded++;
-                    }
-                 }
-                 DU_LOG("\033[1;31m");
-                 DU_LOG("\nDEBUG  -->  LWR_MAC: MIB sent..");
-                 DU_LOG("\033[0m");
-              }
-              if(currDlSlot->dlInfo.brdcstAlloc.sib1Trans)
-              {
-                 /* Filling SIB1 param */
-                 if(numPduEncoded != nPdu)
-                 {
-                    rntiType = SI_RNTI_TYPE;
-                    fillPdcchPdu(&dlTtiReq->pdus[numPduEncoded],&currDlSlot->dlInfo,\
-                          rntiType, CORESET_TYPE0);
-                    numPduEncoded++;
-                    fillPdschPdu(&dlTtiReq->pdus[numPduEncoded],
-                          &currDlSlot->dlInfo.brdcstAlloc.sib1Alloc.sib1PdschCfg,
-                          currDlSlot->dlInfo.brdcstAlloc.sib1Alloc.bwp,
-                          pduIndex);
-                    pduIndex++;
-                    numPduEncoded++;
-                 }
-                 DU_LOG("\033[1;34m");
+         dlTtiReq = (fapi_dl_tti_req_t *)(dlTtiElem +1);
+         memset(dlTtiReq, 0, sizeof(fapi_dl_tti_req_t));
+         fillMsgHeader(&dlTtiReq->header, FAPI_DL_TTI_REQUEST, sizeof(fapi_dl_tti_req_t));
+
+         dlTtiReq->sfn  = dlTtiReqTimingInfo.sfn;
+         dlTtiReq->slot = dlTtiReqTimingInfo.slot;
+         dlTtiReq->nPdus = calcDlTtiReqPduCount(&currDlSlot->dlInfo);  /* get total Pdus */
+         nPdu = dlTtiReq->nPdus;
+         dlTtiReq->nGroup = 0;
+         if(dlTtiReq->nPdus > 0)
+         {
+            if(currDlSlot->dlInfo.isBroadcastPres)
+            {
+               if(currDlSlot->dlInfo.brdcstAlloc.ssbTrans)
+               {
+                  if(dlTtiReq->pdus != NULLP)
+                  {
+                     for(idx = 0; idx < currDlSlot->dlInfo.brdcstAlloc.ssbIdxSupported; idx++)
+                     {
+                        fillSsbPdu(&dlTtiReq->pdus[numPduEncoded], &macCellCfg,\
+                              currDlSlot, idx, dlTtiReq->sfn);
+                        numPduEncoded++;
+                     }
+                  }
+                  DU_LOG("\033[1;31m");
+                  DU_LOG("\nDEBUG  -->  LWR_MAC: MIB sent..");
+                  DU_LOG("\033[0m");
+               }
+
+               if(currDlSlot->dlInfo.brdcstAlloc.sib1Trans)
+               {
+                  /* Filling SIB1 param */
+                  if(numPduEncoded != nPdu)
+                  {
+                     rntiType = SI_RNTI_TYPE;
+                     fillPdcchPdu(&dlTtiReq->pdus[numPduEncoded], &currDlSlot->dlInfo, -1, \
+                           rntiType, CORESET_TYPE0, MAX_NUM_UE);
+                     numPduEncoded++;
+                     fillPdschPdu(&dlTtiReq->pdus[numPduEncoded],
+                           &currDlSlot->dlInfo.brdcstAlloc.sib1Alloc.sib1PdschCfg,
+                           currDlSlot->dlInfo.brdcstAlloc.sib1Alloc.bwp,
+                           pduIndex);
+                     dlTtiReq->ue_grp_info[dlTtiReq->nGroup].pduIdx[pduIndex] = pduIndex;
+                     pduIndex++;
+                     numPduEncoded++;
+                  }
+                  DU_LOG("\033[1;34m");
                   DU_LOG("\nDEBUG  -->  LWR_MAC: SIB1 sent...");
-                 DU_LOG("\033[0m");
-              }
-           }
-           if(currDlSlot->dlInfo.rarAlloc != NULLP)
-           {
-              /* Filling RAR param */
-              rntiType = RA_RNTI_TYPE;
-              fillPdcchPdu(&dlTtiReq->pdus[numPduEncoded], \
-                    &currDlSlot->dlInfo, rntiType, CORESET_TYPE0);
-              numPduEncoded++;
-              fillPdschPdu(&dlTtiReq->pdus[numPduEncoded],
-                    &currDlSlot->dlInfo.rarAlloc->rarPdschCfg,
-                    currDlSlot->dlInfo.rarAlloc->bwp,
-                    pduIndex);
-              numPduEncoded++;
-              pduIndex++;
-
-              DU_LOG("\033[1;32m");
-              DU_LOG("\nDEBUG  -->  LWR_MAC: RAR sent...");
-              DU_LOG("\033[0m");
-           }
-           if(currDlSlot->dlInfo.dlMsgAlloc != NULLP)
-           {
-              if(currDlSlot->dlInfo.dlMsgAlloc->dlMsgInfo.dlMsgPdu != NULLP)
-              {
-                 /* Filling Msg4 param */
-                 DU_LOG("\033[1;32m");
-                 if(currDlSlot->dlInfo.dlMsgAlloc->dlMsgInfo.isMsg4Pdu)
-                 {
-                    rntiType = TC_RNTI_TYPE;
-                    fillPdcchPdu(&dlTtiReq->pdus[numPduEncoded], \
-                          &currDlSlot->dlInfo, rntiType, CORESET_TYPE0);
-                    DU_LOG("\nDEBUG  -->  LWR_MAC: MSG4 sent...");
-                 }
-                 else
-                 { 
-                    /* Filling other DL msg params */
-                    rntiType = C_RNTI_TYPE;
-                    fillPdcchPdu(&dlTtiReq->pdus[numPduEncoded], \
-                          &currDlSlot->dlInfo, rntiType, CORESET_TYPE1);
-                    DU_LOG("\nDEBUG  -->  LWR_MAC: DL MSG sent...");
+                  DU_LOG("\033[0m");
+               }
+            }
+            
+            for(ueIdx=0; ueIdx<MAX_NUM_UE; ueIdx++)
+            {
+               if(currDlSlot->dlInfo.rarAlloc[ueIdx] != NULLP)
+               {
+                  /* Filling RAR param */
+                  rntiType = RA_RNTI_TYPE;
+                  if((currDlSlot->dlInfo.rarAlloc[ueIdx]->pduPres == BOTH) || \
+                        (currDlSlot->dlInfo.rarAlloc[ueIdx]->pduPres == PDCCH_PDU))
+                  {
+                     fillPdcchPdu(&dlTtiReq->pdus[numPduEncoded], \
+                           &currDlSlot->dlInfo, -1, rntiType, CORESET_TYPE0, ueIdx);
+                     numPduEncoded++;
                   }
-                 DU_LOG("\033[0m");
-
-                 numPduEncoded++;
-                 fillPdschPdu(&dlTtiReq->pdus[numPduEncoded],
-                       &currDlSlot->dlInfo.dlMsgAlloc->dlMsgPdschCfg,
-                       currDlSlot->dlInfo.dlMsgAlloc->bwp,
-                       pduIndex);
-                 numPduEncoded++;
-                 pduIndex++;
-              }
-               else
-              {
-                  MAC_FREE(currDlSlot->dlInfo.dlMsgAlloc, sizeof(DlMsgAlloc));
-                 currDlSlot->dlInfo.dlMsgAlloc = NULLP;
-              }
-           }
+                  if((currDlSlot->dlInfo.rarAlloc[ueIdx]->pduPres == BOTH) || \
+                        (currDlSlot->dlInfo.rarAlloc[ueIdx]->pduPres == PDSCH_PDU))
+                  {
+                     fillPdschPdu(&dlTtiReq->pdus[numPduEncoded],
+                           &currDlSlot->dlInfo.rarAlloc[ueIdx]->rarPdschCfg,
+                           currDlSlot->dlInfo.rarAlloc[ueIdx]->bwp,
+                           pduIndex);
+                     numPduEncoded++;
+                     pduIndex++;
+
+                     DU_LOG("\033[1;32m");
+                     DU_LOG("\nDEBUG  -->  LWR_MAC: RAR sent...");
+                     DU_LOG("\033[0m");
+                  }
+               }
+
+               if(currDlSlot->dlInfo.dlMsgAlloc[ueIdx] != NULLP)
+               {
+                  for(idx=0; idx<currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->numSchedInfo; idx++)
+                  {
+                     /* Filling Msg4 param */
+                     if((currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].pduPres == BOTH) || \
+                           (currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].pduPres == PDCCH_PDU))
+                     {
+                        if(currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].dlMsgInfo.isMsg4Pdu)
+                        {
+                           rntiType = TC_RNTI_TYPE;
+                           fillPdcchPdu(&dlTtiReq->pdus[numPduEncoded], \
+                                 &currDlSlot->dlInfo, idx, rntiType, CORESET_TYPE0, ueIdx);
+                        }
+                        else
+                        { 
+                           /* Filling other DL msg params */
+                           rntiType = C_RNTI_TYPE;
+                           fillPdcchPdu(&dlTtiReq->pdus[numPduEncoded], \
+                                 &currDlSlot->dlInfo, idx, rntiType, CORESET_TYPE1, ueIdx);
+                        }
+                        numPduEncoded++;
+                     }
+
+                     if(currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].dlMsgInfo.dlMsgPdu != NULLP)
+                     {
+                        if((currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].pduPres == BOTH) || \
+                              (currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].pduPres == PDSCH_PDU))
+                        {
+                           fillPdschPdu(&dlTtiReq->pdus[numPduEncoded], \
+                                 &currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].dlMsgPdschCfg,\
+                                 currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].bwp, pduIndex);
+                           numPduEncoded++;
+                           pduIndex++;
+
+                           DU_LOG("\033[1;32m");
+                           if(currDlSlot->dlInfo.dlMsgAlloc[ueIdx]->dlMsgSchedInfo[idx].dlMsgInfo.isMsg4Pdu)
+                           {
+                              DU_LOG("\nDEBUG  -->  LWR_MAC: MSG4 sent...");
+                           }
+                           else
+                           {
+                              DU_LOG("\nDEBUG  -->  LWR_MAC: DL MSG sent...");
+                           }
+                           DU_LOG("\033[0m");
+                        }
+
+                     }
+                  /*   else
+                     {
+                        MAC_FREE(currDlSlot->dlInfo.dlMsgAlloc[ueIdx], sizeof(DlMsgAlloc));
+                        currDlSlot->dlInfo.dlMsgAlloc[ueIdx] = NULLP;
+                     }
+                     */
+                  }
+               }
+            }
+
+            dlTtiReq->ue_grp_info[dlTtiReq->nGroup].nUe = MAX_NUM_UE_PER_TTI;
+            dlTtiReq->nGroup++;
 
 #ifdef ODU_SLOT_IND_DEBUG_LOG      
-           DU_LOG("\nDEBUG  -->  LWR_MAC: Sending DL TTI Request");
+            DU_LOG("\nDEBUG  -->  LWR_MAC: Sending DL TTI Request");
 #endif     
-           /* Intel L1 expects UL_TTI.request following DL_TTI.request */
-           msgHeader->num_msg++;
+
+            /* Intel L1 expects UL_TTI.request following DL_TTI.request */
             fillUlTtiReq(currTimingInfo, dlTtiElem);
-           /* send Tx-DATA req message */
-           msgHeader->num_msg++;
-           sendTxDataReq(dlTtiReqTimingInfo, &currDlSlot->dlInfo, dlTtiElem->p_next);
-            LwrMacSendToL1(headerElem);
-        }
-        else
-        {
+            msgHeader->num_msg++;
+
+            /* Intel L1 expects UL_DCI.request following DL_TTI.request */
+            fillUlDciReq(dlTtiReqTimingInfo, dlTtiElem->p_next);
+            msgHeader->num_msg++;
+
+            /* send Tx-DATA req message */
+            sendTxDataReq(dlTtiReqTimingInfo, &currDlSlot->dlInfo, dlTtiElem->p_next->p_next);
+            if(dlTtiElem->p_next->p_next->p_next)
+            {
+               msgHeader->num_msg++;
+               prevElem = dlTtiElem->p_next->p_next->p_next;
+            }
+            else
+               prevElem = dlTtiElem->p_next->p_next;
+         }
+         else
+         {
 #ifdef ODU_SLOT_IND_DEBUG_LOG      
-           DU_LOG("\nDEBUG  -->  LWR_MAC: Sending DL TTI Request");
+            DU_LOG("\nDEBUG  -->  LWR_MAC: Sending DL TTI Request");
 #endif     
 
-           /* Intel L1 expects UL_TTI.request following DL_TTI.request */
-           msgHeader->num_msg++;
-           fillUlTtiReq(currTimingInfo, dlTtiElem);
-            LwrMacSendToL1(headerElem);
-        }
-        memset(currDlSlot, 0, sizeof(MacDlSlot));
-        return ROK;
+            /* Intel L1 expects UL_TTI.request following DL_TTI.request */
+            fillUlTtiReq(currTimingInfo, dlTtiElem);
+            msgHeader->num_msg++;
+
+            /* Intel L1 expects UL_DCI.request following DL_TTI.request */
+            fillUlDciReq(dlTtiReqTimingInfo, dlTtiElem->p_next);
+            msgHeader->num_msg++;
+
+            prevElem = dlTtiElem->p_next->p_next;
+         }
+
+         if(macCb.macCell[cellIdx]->state == CELL_TO_BE_STOPPED)
+         {
+            /* Intel L1 expects UL_DCI.request following DL_TTI.request */
+            lwr_mac_procStopReqEvt(currTimingInfo, prevElem);
+            msgHeader->num_msg++;
+            macCb.macCell[cellIdx]->state = CELL_STOP_IN_PROGRESS;
+         }
+         LwrMacSendToL1(headerElem);
+         memset(currDlSlot, 0, sizeof(MacDlSlot));
+         return ROK;
       }
       else
       {
-        DU_LOG("\nERROR  -->  LWR_MAC: Failed to allocate memory for DL TTI Request");
-        memset(currDlSlot, 0, sizeof(MacDlSlot));
-        return RFAILED;
+         DU_LOG("\nERROR  -->  LWR_MAC: Failed to allocate memory for DL TTI Request");
+         memset(currDlSlot, 0, sizeof(MacDlSlot));
+         return RFAILED;
       }
    }
    else
@@ -3554,11 +3641,17 @@ uint16_t fillDlTtiReq(SlotIndInfo currTimingInfo)
  *         RFAILED - failure
  *
  * ****************************************************************/
-uint16_t sendTxDataReq(SlotIndInfo currTimingInfo, DlSchedInfo *dlInfo, p_fapi_api_queue_elem_t prevElem)
+uint16_t sendTxDataReq(SlotTimingInfo currTimingInfo, DlSchedInfo *dlInfo, p_fapi_api_queue_elem_t prevElem)
 {
 #ifdef INTEL_FAPI
-   uint8_t nPdu = 0;
-   uint16_t cellIdx;
+#ifdef CALL_FLOW_DEBUG_LOG
+   DU_LOG("\nCall Flow: ENTMAC -> ENTLWRMAC : TX_DATA_REQ\n");
+#endif
+
+   uint8_t  nPdu = 0;
+   uint8_t  ueIdx=0;
+   uint8_t  schInfoIdx = 0;
+   uint16_t cellIdx=0;
    uint16_t pduIndex = 0;
    fapi_tx_data_req_t       *txDataReq =NULLP;
    p_fapi_api_queue_elem_t  txDataElem = 0;
@@ -3572,12 +3665,12 @@ uint16_t sendTxDataReq(SlotIndInfo currTimingInfo, DlSchedInfo *dlInfo, p_fapi_a
       LWR_MAC_ALLOC(txDataElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_tx_data_req_t)));
       if(txDataElem == NULLP)
       {
-        DU_LOG("\nERROR  -->  LWR_MAC: Failed to allocate memory for TX data Request");
-        return RFAILED;
+         DU_LOG("\nERROR  -->  LWR_MAC: Failed to allocate memory for TX data Request");
+         return RFAILED;
       }
 
       FILL_FAPI_LIST_ELEM(txDataElem, NULLP, FAPI_TX_DATA_REQUEST, 1, \
-          sizeof(fapi_tx_data_req_t));
+            sizeof(fapi_tx_data_req_t));
       txDataReq = (fapi_tx_data_req_t *)(txDataElem +1);
       memset(txDataReq, 0, sizeof(fapi_tx_data_req_t));
       fillMsgHeader(&txDataReq->header, FAPI_TX_DATA_REQUEST, sizeof(fapi_tx_data_req_t));
@@ -3586,33 +3679,45 @@ uint16_t sendTxDataReq(SlotIndInfo currTimingInfo, DlSchedInfo *dlInfo, p_fapi_a
       txDataReq->slot = currTimingInfo.slot;
       if(dlInfo->brdcstAlloc.sib1Trans)
       {
-        fillSib1TxDataReq(txDataReq->pdu_desc, pduIndex, &macCb.macCell[cellIdx]->macCellCfg, \
-           dlInfo->brdcstAlloc.sib1Alloc.sib1PdschCfg);
-        pduIndex++;
-        txDataReq->num_pdus++;
+         fillSib1TxDataReq(txDataReq->pdu_desc, pduIndex, &macCb.macCell[cellIdx]->macCellCfg, \
+               dlInfo->brdcstAlloc.sib1Alloc.sib1PdschCfg);
+         pduIndex++;
+         txDataReq->num_pdus++;
       }
-      if(dlInfo->rarAlloc != NULLP)
-      {
-        fillRarTxDataReq(txDataReq->pdu_desc, pduIndex, &dlInfo->rarAlloc->rarInfo,\
-           dlInfo->rarAlloc->rarPdschCfg);
-        pduIndex++;
-        txDataReq->num_pdus++;
 
-        MAC_FREE(dlInfo->rarAlloc,sizeof(RarAlloc));
-        dlInfo->rarAlloc = NULLP;
-      }
-      if(dlInfo->dlMsgAlloc != NULLP)
+      for(ueIdx=0; ueIdx<MAX_NUM_UE; ueIdx++)
       {
-         fillDlMsgTxDataReq(txDataReq->pdu_desc, pduIndex, &dlInfo->dlMsgAlloc->dlMsgInfo,\
-           dlInfo->dlMsgAlloc->dlMsgPdschCfg);
-         pduIndex++;
-         txDataReq->num_pdus++;
+         if(dlInfo->rarAlloc[ueIdx] != NULLP)
+         {
+            if((dlInfo->rarAlloc[ueIdx]->pduPres == BOTH) || (dlInfo->rarAlloc[ueIdx]->pduPres == PDSCH_PDU))
+            {
+               fillRarTxDataReq(txDataReq->pdu_desc, pduIndex, &dlInfo->rarAlloc[ueIdx]->rarInfo,\
+                     dlInfo->rarAlloc[ueIdx]->rarPdschCfg);
+               pduIndex++;
+               txDataReq->num_pdus++;
+            }
+            MAC_FREE(dlInfo->rarAlloc[ueIdx],sizeof(RarAlloc));
+         }
 
-         MAC_FREE(dlInfo->dlMsgAlloc->dlMsgInfo.dlMsgPdu,\
-            dlInfo->dlMsgAlloc->dlMsgInfo.dlMsgPduLen);
-         dlInfo->dlMsgAlloc->dlMsgInfo.dlMsgPdu = NULLP;
-         MAC_FREE(dlInfo->dlMsgAlloc, sizeof(DlMsgAlloc));
-         dlInfo->dlMsgAlloc = NULLP;
+         if(dlInfo->dlMsgAlloc[ueIdx] != NULLP)
+         {
+            for(schInfoIdx=0; schInfoIdx < dlInfo->dlMsgAlloc[ueIdx]->numSchedInfo; schInfoIdx++)
+            {
+               if((dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].pduPres == BOTH) || \
+                     (dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].pduPres == PDSCH_PDU))
+               {
+                  fillDlMsgTxDataReq(txDataReq->pdu_desc, pduIndex, \
+                        &dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgInfo, \
+                        dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgPdschCfg);
+                  pduIndex++;
+                  txDataReq->num_pdus++;
+               }
+               MAC_FREE(dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgInfo.dlMsgPdu, \
+                     dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgInfo.dlMsgPduLen);
+               dlInfo->dlMsgAlloc[ueIdx]->dlMsgSchedInfo[schInfoIdx].dlMsgInfo.dlMsgPdu = NULLP;
+            }
+            MAC_FREE(dlInfo->dlMsgAlloc[ueIdx], sizeof(DlMsgAlloc));
+         }
       }
 
       /* Fill message header */
@@ -3903,12 +4008,16 @@ void fillPucchPdu(fapi_ul_tti_req_pdu_t *ulTtiReqPdu, MacCellCfg *macCellCfg,\
  *         RFAILED - failure
  *
  ******************************************************************/
-uint16_t fillUlTtiReq(SlotIndInfo currTimingInfo, p_fapi_api_queue_elem_t prevElem)
+uint16_t fillUlTtiReq(SlotTimingInfo currTimingInfo, p_fapi_api_queue_elem_t prevElem)
 {
+#ifdef CALL_FLOW_DEBUG_LOG
+   DU_LOG("\nCall Flow: ENTMAC -> ENTLWRMAC : UL_TTI_REQUEST\n");
+#endif
+
 #ifdef INTEL_FAPI
    uint16_t   cellIdx =0;
    uint8_t    pduIdx = -1;
-   SlotIndInfo ulTtiReqTimingInfo;
+   SlotTimingInfo ulTtiReqTimingInfo;
    MacUlSlot *currUlSlot = NULLP;
    MacCellCfg macCellCfg;
    fapi_ul_tti_req_t *ulTtiReq = NULLP;
@@ -4000,6 +4109,9 @@ uint16_t fillUlTtiReq(SlotIndInfo currTimingInfo, p_fapi_api_queue_elem_t prevEl
  ******************************************************************/
 void fillUlDciPdu(fapi_dl_dci_t *ulDciPtr, DciInfo *schDciInfo)
 {
+#ifdef CALL_FLOW_DEBUG_LOG
+   DU_LOG("\nCall Flow: ENTMAC -> ENTLWRMAC : UL_DCI_REQUEST\n");
+#endif
    if(ulDciPtr != NULLP)
    {
       uint8_t numBytes =0;
@@ -4194,26 +4306,22 @@ uint8_t fillUlDciPdcchPdu(fapi_dci_pdu_t *ulDciReqPdu, DlSchedInfo *dlInfo, uint
  *         RFAILED - failure
  *
  ******************************************************************/
-uint16_t fillUlDciReq(SlotIndInfo currTimingInfo)
+uint16_t fillUlDciReq(SlotTimingInfo currTimingInfo, p_fapi_api_queue_elem_t prevElem)
 {
 #ifdef INTEL_FAPI
    uint8_t      cellIdx =0;
    uint8_t      numPduEncoded = 0;
-   SlotIndInfo  ulDciReqTimingInfo ={0};
+   SlotTimingInfo  ulDciReqTimingInfo ={0};
    MacDlSlot    *currDlSlot = NULLP;
    fapi_ul_dci_req_t        *ulDciReq =NULLP;
-   fapi_msg_header_t        *msgHeader =NULLP;
    p_fapi_api_queue_elem_t  ulDciElem;
-   p_fapi_api_queue_elem_t  headerElem;
 
    if(lwrMacCb.phyState == PHY_STATE_RUNNING)
    {
       GET_CELL_IDX(currTimingInfo.cellId, cellIdx);
-      memcpy(&ulDciReqTimingInfo, &currTimingInfo, sizeof(SlotIndInfo));
+      memcpy(&ulDciReqTimingInfo, &currTimingInfo, sizeof(SlotTimingInfo));
       currDlSlot = &macCb.macCell[cellIdx]->dlSlot[ulDciReqTimingInfo.slot % MAX_SLOTS];
 
-      if(currDlSlot->dlInfo.ulGrant != NULLP)
-      {
          LWR_MAC_ALLOC(ulDciElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_ul_dci_req_t)));
          if(ulDciElem)
         {
@@ -4225,6 +4333,8 @@ uint16_t fillUlDciReq(SlotIndInfo currTimingInfo)
 
             ulDciReq->sfn  = ulDciReqTimingInfo.sfn;
             ulDciReq->slot = ulDciReqTimingInfo.slot;
+          if(currDlSlot->dlInfo.ulGrant != NULLP)
+          {
             ulDciReq->numPdus = 1;  // No. of PDCCH PDUs
             if(ulDciReq->numPdus > 0)
             {
@@ -4233,33 +4343,12 @@ uint16_t fillUlDciReq(SlotIndInfo currTimingInfo)
                numPduEncoded++;
               /* free UL GRANT at SCH */
               MAC_FREE(currDlSlot->dlInfo.ulGrant, sizeof(DciInfo));
-              currDlSlot->dlInfo.ulGrant = NULLP;
-
-              /* Fill message header */
-              LWR_MAC_ALLOC(headerElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_msg_header_t)));
-              if(!headerElem)
-              {
-                 DU_LOG("\nERROR  -->  LWR_MAC: Memory allocation failed for UL DCI req header");
-                 LWR_MAC_FREE(ulDciElem, (sizeof(fapi_api_queue_elem_t) + sizeof(fapi_ul_dci_req_t)));
-                 return RFAILED;
-              }
-              FILL_FAPI_LIST_ELEM(headerElem, ulDciElem, FAPI_VENDOR_MSG_HEADER_IND, 1, \
-                 sizeof(fapi_msg_header_t));
-              msgHeader = (fapi_msg_header_t *)(headerElem + 1);
-              msgHeader->num_msg = 1;
-              msgHeader->handle = 0;
+            }
 #ifdef ODU_SLOT_IND_DEBUG_LOG
               DU_LOG("\nDEBUG  -->  LWR_MAC: Sending UL DCI Request");
 #endif
-              LwrMacSendToL1(headerElem);
-            }
         }
-         else
-         {
-            DU_LOG("\nERROR  -->  LWR_MAC: Failed to allocate memory for UL DCI Request");
-            memset(currDlSlot, 0, sizeof(MacDlSlot));
-            return RFAILED;
-         }
+               prevElem->p_next = ulDciElem;
       }
    }
    else
@@ -4306,7 +4395,7 @@ lwrMacFsmHdlr fapiEvtHdlr[MAX_STATE][MAX_EVENT] =
       lwr_mac_procConfigReqEvt,
       lwr_mac_procConfigRspEvt,
       lwr_mac_procInvalidEvt,
-      lwr_mac_procStopReqEvt,
+      lwr_mac_procInvalidEvt,
    }
 };