Added an RX_IND handle in the gNB/VNF

Also updated the NR nFAPI for properly packing
and unpacking the ra_indication. Lastly, added
the functionality for calling the callback RX_ind
functions in the VNF. The RX_IND PDU is recevied
as NULL in the gNB so need to investigate how to
properly pack and unpack the *pdu in the RX_ind.

nfapi/oai_integration/nfapi_vnf.c

@@ -875,6 +875,23 @@ int phy_rx_indication(struct nfapi_vnf_p7_config *config, nfapi_rx_indication_t
   //mac_rx_ind(p7_vnf->mac, ind);
   return 1;
 }
+
+int phy_nr_rx_indication(struct nfapi_vnf_p7_config *config, nfapi_nr_rx_data_indication_t *ind) {
+
+  LOG_I(MAC, "Melissa in %s() NFAPI SFN/SF: %d/%d number_of_pdus :%u, and pdu %p\n",
+          __FUNCTION__,ind->sfn, ind->slot, ind->number_of_pdus, ind->pdu_list[0].pdu);
+
+  if(NFAPI_MODE == NFAPI_MODE_VNF)
+  {
+    UL_INFO.rx_ind = *ind;
+  }
+  else
+  {
+    LOG_E(NR_MAC, "NFAPI_MODE = %d not NFAPI_MODE_VNF(2)\n", nfapi_getmode());
+  }
+  return 1;
+}
+
 int phy_srs_indication(struct nfapi_vnf_p7_config *config, nfapi_srs_indication_t *ind) {
   // vnf_p7_info* p7_vnf = (vnf_p7_info*)(config->user_data);
   //mac_srs_ind(p7_vnf->mac, ind);
@@ -1162,7 +1179,7 @@ void *vnf_nr_p7_thread_start(void *ptr) {
   p7_vnf->config->slot_indication = &phy_slot_indication;
   p7_vnf->config->harq_indication = &phy_harq_indication;
   p7_vnf->config->crc_indication = &phy_crc_indication;
-  p7_vnf->config->rx_indication = &phy_rx_indication;
+  p7_vnf->config->nr_rx_indication = &phy_nr_rx_indication;
   p7_vnf->config->nr_rach_indication = &phy_nr_rach_indication;
   p7_vnf->config->srs_indication = &phy_srs_indication;
   p7_vnf->config->sr_indication = &phy_sr_indication;

nfapi/open-nFAPI/nfapi/src/nfapi_p7.c

@@ -3387,7 +3387,6 @@ static uint8_t pack_nr_rx_data_indication_body(void* tlv, uint8_t **ppWritePacke
 	return 1;
 }
 
-
 static uint8_t pack_nr_rx_data_indication(void *msg, uint8_t **ppWritePackedMsg, uint8_t *end, nfapi_p7_codec_config_t* config)
 {
 	nfapi_nr_rx_data_indication_t *pNfapiMsg = (nfapi_nr_rx_data_indication_t*)msg;
@@ -3398,9 +3397,9 @@ static uint8_t pack_nr_rx_data_indication(void *msg, uint8_t **ppWritePackedMsg,
 		))
 			return 0;
 
-	for(int i=0; i<pNfapiMsg->number_of_pdus;i++)	
+	for(int i = 0; i < pNfapiMsg->number_of_pdus; i++)
 	{
-		if(!pack_nr_rx_data_indication_body(pNfapiMsg->pdu_list,ppWritePackedMsg,end))
+		if(!pack_nr_rx_data_indication_body(&(pNfapiMsg->pdu_list[i]), ppWritePackedMsg, end))
 		return 0;
 	}
 
@@ -6385,25 +6384,20 @@ static uint8_t unpack_nr_rx_data_indication_body(void* tlv, uint8_t **ppReadPack
 
 static uint8_t unpack_nr_rx_data_indication(uint8_t **ppReadPackedMsg, uint8_t *end, void *msg, nfapi_p7_codec_config_t* config)
 {
-	// uint8_t *ptr = *ppReadPackedMsg;
-	// printf("\n Read P7 message rx data indication unpack: ");
-	// while(ptr < end){
-	// 	printf(" %d ", *ptr);
-	// 	ptr++;
-	// }
-	// printf("\n");
 	nfapi_nr_rx_data_indication_t *pNfapiMsg = (nfapi_nr_rx_data_indication_t*)msg;
 
-	printf("\n");
 	if (!(pull16(ppReadPackedMsg, &pNfapiMsg->sfn , end) &&
 		pull16(ppReadPackedMsg, &pNfapiMsg->slot , end) &&
 		pull16(ppReadPackedMsg, &pNfapiMsg->number_of_pdus, end)
 		))
 			return 0;
+        if (pNfapiMsg->number_of_pdus > 0) {
+                pNfapiMsg->pdu_list = nfapi_p7_allocate(sizeof(*pNfapiMsg->pdu_list) * pNfapiMsg->number_of_pdus, config);
+        }
 
-	for(int i=0; i<pNfapiMsg->number_of_pdus;i++)	
+	for(int i=0; i < pNfapiMsg->number_of_pdus; i++)
 	{
-		if(!unpack_nr_rx_data_indication_body(&pNfapiMsg->pdu_list, ppReadPackedMsg, end))
+		if(!unpack_nr_rx_data_indication_body(&pNfapiMsg->pdu_list[i], ppReadPackedMsg, end))
 		return 0;
 	}
 

nfapi/open-nFAPI/vnf/public_inc/nfapi_vnf_interface.h

@@ -746,6 +746,20 @@ typedef struct nfapi_vnf_p7_config
 	 */
 	int (*rx_indication)(struct nfapi_vnf_p7_config* config, nfapi_rx_indication_t* ind);
 
+        /*! A callback for the RACH.indication
+     *  \param config A pointer to the vnf p7 configuration
+	 *  \param ind A data structure for the decoded nrRACH.indication This will
+	 *              have been allocated on the stack.
+	 *  \return not currently used.
+	 *
+	 *  The ind may contain pointers to dyanmically allocated sub structures
+	 *  such as the pdu. The dyanmically allocated structure will
+	 *  be deallocated on return. If the client wishes to 'keep' the structures
+	 *  then the substructure pointers should be set to 0 and then the client should
+	 *  use the codec_config.deallocate function to release it at a future point
+	 */
+	int (*nr_rx_indication)(struct nfapi_vnf_p7_config* config, nfapi_nr_rx_data_indication_t* ind);
+
 	/*! A callback for the RACH.indication
      *  \param config A pointer to the vnf p7 configuration
 	 *  \param ind A data structure for the decoded RACH.indication This will

nfapi/open-nFAPI/vnf/src/vnf_p7.c

@@ -1478,7 +1478,14 @@ void vnf_handle_nr_rx_data_indication(void *pRecvMsg, int recvMsgLen, vnf_p7_t*
 		{
 			NFAPI_TRACE(NFAPI_TRACE_ERROR, "%s: Failed to unpack message\n", __FUNCTION__);
 		}
-
+                else
+		{
+		        NFAPI_TRACE(NFAPI_TRACE_INFO, "%s: Handling RX Indication\n", __FUNCTION__);
+			if(vnf_p7->_public.nr_rx_indication)
+			{
+				(vnf_p7->_public.nr_rx_indication)(&vnf_p7->_public, &ind);
+			}
+		}
 	}
 }
 

openair2/NR_PHY_INTERFACE/NR_IF_Module.c

@@ -54,8 +54,9 @@ extern uint16_t sf_ahead;
 extern uint16_t sl_ahead;
 extern NR_UL_IND_t UL_INFO;
 
-void handle_nr_rach(NR_UL_IND_t *UL_info) {
-
+void handle_nr_rach(NR_UL_IND_t *UL_info)
+{
+  // Melissa: TODO come back and differentiate between global UL_info and passed in arg
   if (UL_INFO.rach_ind.number_of_pdus>0) {
     LOG_I(MAC,"UL_INFO[Frame %d, Slot %d] Calling initiate_ra_proc RACH:SFN/SLOT:%d/%d\n",
           UL_INFO.frame,UL_INFO.slot, UL_INFO.rach_ind.sfn,UL_INFO.rach_ind.slot);
@@ -122,7 +123,7 @@ void handle_nr_ulsch(NR_UL_IND_t *UL_info)
         // find crc_indication j corresponding rx_indication i
         const nfapi_nr_rx_data_pdu_t *rx = &UL_info->rx_ind.pdu_list[i];
         const nfapi_nr_crc_t *crc = &UL_info->crc_ind.crc_list[j];
-        LOG_D(PHY,
+        LOG_I(PHY,
               "UL_info->crc_ind.pdu_list[%d].rnti:%04x "
               "UL_info->rx_ind.pdu_list[%d].rnti:%04x\n",
               j,
@@ -171,6 +172,22 @@ void handle_nr_ulsch(NR_UL_IND_t *UL_info)
           UL_info->crc_ind.number_crcs,
           UL_info->rx_ind.sfn,
           UL_info->rx_ind.slot);
+  } else if (UL_INFO.rx_ind.number_of_pdus > 0) {
+
+    for (int i = 0; i < UL_INFO.rx_ind.number_of_pdus; i++)
+    {
+      nr_rx_sdu(UL_INFO.module_id,
+                UL_INFO.CC_id,
+                UL_INFO.frame,
+                UL_INFO.slot,
+                UL_INFO.rx_ind.pdu_list[i].rnti,
+                UL_INFO.rx_ind.pdu_list[i].pdu,
+                UL_INFO.rx_ind.pdu_list[i].pdu_length,
+                UL_INFO.rx_ind.pdu_list[i].timing_advance,
+                UL_INFO.rx_ind.pdu_list[i].ul_cqi,
+                UL_INFO.rx_ind.pdu_list[i].rssi);
+    }
+
   }
 }