From 401d981584d81155da201f7d9603220b48c8f475 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Fri, 4 Mar 2022 19:17:34 +0100
Subject: [PATCH 01/28] optimizations for IF5 fronthaul with AW2S 4x4 RU

---
 executables/nr-ru.c                           | 14 +++-
 openair1/PHY/LTE_TRANSPORT/if5_tools.c        | 67 ++++++++++---------
 openair1/PHY/LTE_TRANSPORT/if5_tools.h        |  2 +-
 targets/ARCH/AW2SORI/oaiori.c                 | 31 ++++++---
 targets/ARCH/COMMON/common_lib.h              |  5 +-
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c | 55 ++++-----------
 .../ETHERNET/USERSPACE/LIB/ethernet_lib.c     | 12 ++--
 .../ETHERNET/USERSPACE/LIB/ethernet_lib.h     |  2 +-
 8 files changed, 91 insertions(+), 97 deletions(-)

diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index 2f74c3524b..8852c21381 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -302,7 +302,11 @@ void fh_if5_south_in(RU_t *ru,
                      int *tti) {
   NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
   RU_proc_t *proc = &ru->proc;
-  recv_IF5(ru, &proc->timestamp_rx, *tti, IF5_RRH_GW_UL);
+  nfapi_nr_config_request_scf_t *cfg = &ru->config;
+  int is_rx=1;
+  int slot_type = nr_slot_select(cfg,*frame,*tti);
+  if (slot_type == NR_DOWNLINK_SLOT) is_rx=0;
+  recv_IF5(ru, &proc->timestamp_rx, *tti, IF5_RRH_GW_UL,is_rx);
   if (proc->first_rx == 1) ru->ts_offset = proc->timestamp_rx;
   proc->frame_rx    = ((proc->timestamp_rx-ru->ts_offset) / (fp->samples_per_subframe*10))&1023;
   proc->tti_rx = fp->get_slot_from_timestamp(proc->timestamp_rx-ru->ts_offset,fp);
@@ -475,7 +479,7 @@ void fh_if5_north_asynch_in(RU_t *ru,int *frame,int *slot) {
   RU_proc_t *proc        = &ru->proc;
   int tti_tx,frame_tx;
   openair0_timestamp timestamp_tx;
-  recv_IF5(ru, &timestamp_tx, *slot, IF5_RRH_GW_DL);
+  recv_IF5(ru, &timestamp_tx, *slot, IF5_RRH_GW_DL,1);
   //      printf("Received subframe %d (TS %llu) from RCC\n",tti_tx,timestamp_tx);
   frame_tx    = (timestamp_tx / (fp->samples_per_subframe*10))&1023;
   uint32_t idx_sf = timestamp_tx / fp->samples_per_subframe;
@@ -1363,6 +1367,8 @@ void *ru_thread( void *param ) {
     if (ru->fh_south_in) ru->fh_south_in(ru,&frame,&slot);
     else AssertFatal(1==0, "No fronthaul interface at south port");
 
+    continue;
+
     if (initial_wait == 1 && proc->frame_rx < 300 && ru->fh_south_in == rx_rf) {
        if (proc->frame_rx>0 && ((proc->frame_rx % 100) == 0) && proc->tti_rx==0) {
           LOG_I(PHY,"delay processing to let RX stream settle, frame %d (trials %d)\n",proc->frame_rx,ru->rx_fhaul.trials);
@@ -1413,6 +1419,8 @@ void *ru_thread( void *param ) {
         int prach_id=find_nr_prach_ru(ru,proc->frame_rx,proc->tti_rx,SEARCH_EXIST);
         uint8_t prachStartSymbol,N_dur;
         if (prach_id>=0) {
+          VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_RU_PRACH_RX, 1 );
+
           T(T_GNB_PHY_PRACH_INPUT_SIGNAL, T_INT(proc->frame_rx), T_INT(proc->tti_rx), T_INT(0),
             T_BUFFER(&ru->common.rxdata[0][fp->get_samples_slot_timestamp(proc->tti_rx-1,fp,0)]/*-ru->N_TA_offset*/, fp->get_samples_per_slot(proc->tti_rx,fp)*4*2));
           N_dur = get_nr_prach_duration(ru->prach_list[prach_id].fmt);
@@ -1443,6 +1451,7 @@ void *ru_thread( void *param ) {
           }
 
           free_nr_ru_prach_entry(ru,prach_id);
+          VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_RU_PRACH_RX, 0 );
         }
       }
     }
@@ -1458,6 +1467,7 @@ void *ru_thread( void *param ) {
     syncMsg->timestamp_tx = proc->timestamp_tx;
     res->key = proc->tti_rx;
     pushTpool(gNB->threadPool, res);
+
   }
 
   printf( "Exiting ru_thread \n");
diff --git a/openair1/PHY/LTE_TRANSPORT/if5_tools.c b/openair1/PHY/LTE_TRANSPORT/if5_tools.c
index e71b1e31f6..8eddd9366c 100644
--- a/openair1/PHY/LTE_TRANSPORT/if5_tools.c
+++ b/openair1/PHY/LTE_TRANSPORT/if5_tools.c
@@ -1052,7 +1052,7 @@ static inline int64_t clock_difftime_ns(struct timespec start, struct timespec e
 void send_IF5(RU_t *ru, openair0_timestamp proc_timestamp, int tti, uint8_t *seqno, uint16_t packet_type) {      
   
   LTE_DL_FRAME_PARMS *fp=ru->frame_parms;
-  int32_t *txp[fp->nb_antennas_tx], *rxp[fp->nb_antennas_rx]; 
+  int32_t *txp[ru->nb_tx], *rxp[ru->nb_rx]; 
   int32_t *tx_buffer=NULL;
   uint16_t packet_id=0, i=0;
 
@@ -1106,7 +1106,7 @@ void send_IF5(RU_t *ru, openair0_timestamp proc_timestamp, int tti, uint8_t *seq
 
       NR_DL_FRAME_PARMS *nrfp = ru->nr_frame_parms;
 
-      int offset,siglen,factor=1;
+      int offset,siglen,factor_n=1,factor_d=1;
       if (nrfp) {
          offset = nrfp->get_samples_slot_timestamp(tti,nrfp,0);
          siglen = nrfp->get_samples_per_slot(tti,nrfp);
@@ -1117,11 +1117,13 @@ void send_IF5(RU_t *ru, openair0_timestamp proc_timestamp, int tti, uint8_t *seq
       }
 
       if (ru->openair0_cfg.nr_flag==1) {
-         if (nrfp->N_RB_DL <= 162 && nrfp->N_RB_DL >= 106) factor = 2;
-         else if (nrfp->N_RB_DL < 106) factor=4;
+         if (nrfp->N_RB_DL <= 162 && nrfp->N_RB_DL > 106)      {factor_n=1; factor_d=2;}  // 61.44 Ms/s
+         else if (nrfp->N_RB_DL <= 106 && nrfp->N_RB_DL > 51 ) {factor_n=3; factor_d=4;} // 46.08 Ms/s
+         else if (nrfp->N_RB_DL == 51 )  {factor_n=1; factor_d=1;} // 30.72 Ms/s
+         else AssertFatal(1==0,"N_RB_DL %d not supported yet\n",nrfp->N_RB_DL); 
       }
       else {
-         factor = 30720/spsf;
+         factor_n = 30720/spsf;
       }
       for (i=0; i < ru->nb_tx; i++)
         txp[i] = (int32_t*)&ru->common.txdata[i][offset];
@@ -1132,7 +1134,7 @@ void send_IF5(RU_t *ru, openair0_timestamp proc_timestamp, int tti, uint8_t *seq
           //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF0, 1 );
           clock_gettime( CLOCK_MONOTONIC, &start_comp);
           ru->ifdevice.trx_write_func2(&ru->ifdevice,
-	  			       (proc_timestamp + packet_id*spp_eth-600)*factor,
+	  			       ((proc_timestamp + packet_id*spp_eth-600)*factor_n)/factor_d,
 				       (void*)txp[aid],
 				       spp_eth,
 				       aid,
@@ -1181,7 +1183,7 @@ void send_IF5(RU_t *ru, openair0_timestamp proc_timestamp, int tti, uint8_t *seq
       }
 */
     } else if (eth->compression == NO_COMPRESS) {
-      for (i=0; i < fp->nb_antennas_rx; i++)
+      for (i=0; i < ru->nb_rx; i++)
         rxp[i] = (void*)&ru->common.rxdata[i][tti*fp->samples_per_tti];
     
       for (packet_id=0; packet_id < spsf / spp_eth; packet_id++) {
@@ -1192,12 +1194,12 @@ void send_IF5(RU_t *ru, openair0_timestamp proc_timestamp, int tti, uint8_t *seq
 				    (proc_timestamp + packet_id*spp_eth),
 				    (void**)rxp,
 				    spp_eth,
-				    fp->nb_antennas_rx,
+				    ru->nb_rx,
 				    0);
         clock_gettime( CLOCK_MONOTONIC, &end_comp);
         LOG_D(HW,"[SF %d] IF_Write_Time: %"PRId64"\n",tti,clock_difftime_ns(start_comp, end_comp));
         VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF0, 0 );            
-        for (i=0; i < fp->nb_antennas_rx; i++)
+        for (i=0; i < ru->nb_rx; i++)
           rxp[i] += spp_eth;
 
       }    
@@ -1211,7 +1213,7 @@ void send_IF5(RU_t *ru, openair0_timestamp proc_timestamp, int tti, uint8_t *seq
   return;  		    
 }
 
-void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t packet_type) {
+void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t packet_type,int is_rx) {
 
   LTE_DL_FRAME_PARMS *fp=ru->frame_parms;
   int32_t *txp[ru->nb_tx], *rxp[ru->nb_rx]; 
@@ -1225,6 +1227,7 @@ void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t pa
   openair0_timestamp timestamp[ru->nb_rx*spsf / spp_eth];
   long timein[ru->nb_rx*spsf/spp_eth];
   long timeout[ru->nb_rx*spsf/spp_eth];
+  long aid_list[ru->nb_rx*spsf/spp_eth];
   struct timespec if_time;
  
   memset(timestamp, 0, sizeof(timestamp));
@@ -1271,7 +1274,7 @@ void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t pa
 */
     } else if (eth->compression == NO_COMPRESS) {
       int subframe = tti;
-      for (i=0; i < fp->nb_antennas_tx; i++)
+      for (i=0; i < ru->nb_tx; i++)
         txp[i] = (void*)&ru->common.txdata[i][subframe*fp->samples_per_tti];
     
       for (packet_id=0; packet_id < spsf / spp_eth; packet_id++) {
@@ -1282,11 +1285,11 @@ void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t pa
 				   &timestamp[packet_id],
 				   (void**)txp,
 				   spp_eth,
-				   fp->nb_antennas_tx);
+				   ru->nb_tx);
         clock_gettime( CLOCK_MONOTONIC, &end_decomp);
         LOG_D(HW,"[SF %d] IF_Read_Time: %"PRId64"\n",subframe,clock_difftime_ns(start_decomp, end_decomp));
         //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF0, 0 );  
-        for (i=0; i < fp->nb_antennas_tx; i++)
+        for (i=0; i < ru->nb_tx; i++)
           txp[i] += spp_eth;
 
       }
@@ -1329,12 +1332,11 @@ void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t pa
       }
 */
     } else if (eth->compression == NO_COMPRESS) {
-      int16_t temp_rx[spp_eth*2] __attribute__((aligned(32)));
+      //int16_t temp_rx[spp_eth*2] __attribute__((aligned(32)));
       NR_DL_FRAME_PARMS *nrfp = ru->nr_frame_parms;
 
       int offset,siglen;
-      int factor=1;
-      int ts_offset;
+      int factor_n=1,factor_d=1;
       if (nrfp) {
          offset =  nrfp->get_samples_slot_timestamp(tti,nrfp,0);
          siglen = nrfp->get_samples_per_slot(tti,nrfp);
@@ -1344,13 +1346,12 @@ void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t pa
          siglen = spsf;
       }
       if (ru->openair0_cfg.nr_flag==1) { // This check if RRU knows about NR numerologies
-         if (nrfp->N_RB_DL <= 162 && nrfp->N_RB_DL >= 106) factor = 2;
-         else if (nrfp->N_RB_DL < 106) factor=4;
-         ts_offset = 64;
+         if (nrfp->N_RB_DL <= 162 && nrfp->N_RB_DL > 106) factor_n = 2;
+         else if (nrfp->N_RB_DL <= 106 && nrfp->N_RB_DL > 51) {factor_d=3;factor_n=4;}
+         else if (nrfp->N_RB_DL == 51) {factor_n=1;factor_d=1;}
       }
       else {
-         factor = 30720/spsf;
-         ts_offset = 256;
+         factor_d = 30720/spsf;
       }
       for (i=0; i < ru->nb_rx; i++)
         rxp[i] = &ru->common.rxdata[i][offset];
@@ -1365,19 +1366,21 @@ void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t pa
         timein[packet_id] = if_time.tv_nsec;
         ru->ifdevice.trx_read_func2(&ru->ifdevice,
 				   &timestamp[packet_id],
-				   (void*)temp_rx,
+				   (is_rx>0) ? rxp : NULL,
 				   spp_eth,
+                                   packet_id,
 				   &aid);
         clock_gettime( CLOCK_MONOTONIC, &if_time);
         timeout[packet_id] = if_time.tv_nsec;
-        timestamp[packet_id] /= factor; // for LTE this is the sample rate reduction w.r.t 30.72, for NR 122.88
-        LOG_D(PHY,"TTI %d: factor = %d Received packet %d: aid %d, TS %llu, oldTS %llu, diff %lld, \n",tti,factor,packet_id,aid,(unsigned long long)timestamp[packet_id],(unsigned long long)oldTS,(unsigned long long)(timestamp[packet_id]-timestamp[0]));
+        timestamp[packet_id] = (timestamp[packet_id]*factor_n)/factor_d; 
+        aid_list[packet_id] = aid;
+        //LOG_D(PHY,"TTI %d: factor = %d/%d Received packet %d: aid %d, TS %llu, oldTS %llu, diff %lld, \n",tti,factor_n,factor_d,packet_id,aid,(unsigned long long)timestamp[packet_id],(unsigned long long)oldTS,(unsigned long long)(timestamp[packet_id]-timestamp[0]));
 
         if (aid==0) {
            if (firstTS==1) firstTS=0;
-           else if (oldTS + ts_offset != timestamp[packet_id]) {
-              LOG_I(PHY,"oldTS %llu, newTS %llu, diff %llu, timein %lu, timeout %lu\n",(long long unsigned int)oldTS,(long long unsigned int)timestamp[packet_id],(long long unsigned int)timestamp[packet_id]-oldTS,timein[packet_id],timeout[packet_id]); 
-              for (int i=0;i<=packet_id;i++) LOG_I(PHY,"packet %d TS %llu, timein %lu, timeout %lu\n",i,(long long unsigned int)timestamp[i],timein[i],timeout[i]);
+           else if (oldTS + spp_eth != timestamp[packet_id]) {
+              LOG_I(PHY,"oldTS %llu, newTS %llu, diff %llu, timediff %ld\n",(long long unsigned int)oldTS,(long long unsigned int)timestamp[packet_id],(long long unsigned int)timestamp[packet_id]-oldTS,-timein[packet_id]+timeout[packet_id]); 
+              for (int i=0;i<=packet_id;i++) LOG_I(PHY,"packet %d aid %d TS %llu, timediff %ld\n",i,aid_list[i],(long long unsigned int)timestamp[i],-timein[i]+timeout[i]);
               AssertFatal(1==0,"fronthaul problem\n");
            }
 
@@ -1388,12 +1391,12 @@ void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t pa
         // HYPOTHESIS: first packet per subframe has lowest timestamp of subframe
         // should detect out of order and act accordingly ....
         AssertFatal(aid==0 || aid==1 || aid==2 || aid==3,"aid %d != 0,1,2 or 3\n",aid);
-        LOG_D(PHY,"rxp[%d] %p, dest %p, offset %d (%llu,%llu)\n",aid,rxp[aid],rxp[aid]+(timestamp[packet_id]-timestamp[0]),(int)(timestamp[packet_id]-timestamp[0]),(long long unsigned int)timestamp[packet_id],(long long unsigned int)timestamp[0]);
-        memcpy((void*)(rxp[aid]+(timestamp[packet_id]-timestamp[0])),
-               (void*)temp_rx,
-               spp_eth<<2);
+        //LOG_D(PHY,"rxp[%d] %p, dest %p, offset %d (%llu,%llu)\n",aid,rxp[aid],rxp[aid]+(timestamp[packet_id]-timestamp[0]),(int)(timestamp[packet_id]-timestamp[0]),(long long unsigned int)timestamp[packet_id],(long long unsigned int)timestamp[0]);
+        //memcpy((void*)(rxp[aid]+(timestamp[packet_id]-timestamp[0])),
+        //       (void*)temp_rx,
+        //       spp_eth<<2);
         clock_gettime( CLOCK_MONOTONIC, &end_decomp);
-        LOG_D(HW,"[TTI %d] IF_Read_Time: %"PRId64"\n",tti,clock_difftime_ns(start_decomp, end_decomp));
+        //LOG_D(HW,"[TTI %d] IF_Read_Time: %"PRId64"\n",tti,clock_difftime_ns(start_decomp, end_decomp));
         //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF0, 0 );            
 
       }
diff --git a/openair1/PHY/LTE_TRANSPORT/if5_tools.h b/openair1/PHY/LTE_TRANSPORT/if5_tools.h
index 6c75b20bd9..8d346b3676 100644
--- a/openair1/PHY/LTE_TRANSPORT/if5_tools.h
+++ b/openair1/PHY/LTE_TRANSPORT/if5_tools.h
@@ -61,7 +61,7 @@ typedef struct IF5_mobipass_header IF5_mobipass_header_t;
 
 void send_IF5(RU_t *, openair0_timestamp, int, uint8_t*, uint16_t);
 
-void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int subframe, uint16_t packet_type);
+void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int subframe, uint16_t packet_type,int is_rx);
 
 
 void malloc_IF5_buffer(RU_t *ru);
diff --git a/targets/ARCH/AW2SORI/oaiori.c b/targets/ARCH/AW2SORI/oaiori.c
index 9cf15237cf..d88bc64ccb 100644
--- a/targets/ARCH/AW2SORI/oaiori.c
+++ b/targets/ARCH/AW2SORI/oaiori.c
@@ -250,7 +250,6 @@ int aw2s_startstreaming(openair0_device *device) {
 
   }
   ORI_Object_s *link= ORI_FindObject(ori, ORI_ObjectType_ORILink, 0, NULL);
-
   if (tx0 == NULL || 
       (tx1 == NULL && openair0_cfg->tx_num_channels > 1) || 
       (tx2 == NULL && openair0_cfg->tx_num_channels > 2) ||
@@ -335,7 +334,7 @@ int aw2s_startstreaming(openair0_device *device) {
     printf("\n\n\n========================================================\n");
 
     /* Put Tx3 into service */
-   result = ORI_ObjectStateModification(ori, tx1, ORI_AST_Unlocked, &RE_result);
+   result = ORI_ObjectStateModification(ori, tx3, ORI_AST_Unlocked, &RE_result);
     if(result != ORI_Result_SUCCESS)
       {
         printf("ORI_ObjectStateModify failed with error: %s\n", ORI_Result_Print(result));
@@ -402,7 +401,7 @@ int aw2s_startstreaming(openair0_device *device) {
   if (rx3) {
     printf("\n\n\n========================================================\n");
 
-    /* Put Rx1 into service */
+    /* Put Rx3 into service */
     result = ORI_ObjectStateModification(ori, rx3, ORI_AST_Unlocked, &RE_result);
     if(result != ORI_Result_SUCCESS)
       {
@@ -412,33 +411,45 @@ int aw2s_startstreaming(openair0_device *device) {
       }
     printf("ORI_ObjectStateModify: %s\n", ORI_Result_Print(RE_result));
   }
-  /*
+/*  
   while (rx0->fst != ORI_FST_Operational || 
          (openair0_cfg->rx_num_channels > 1 && rx1->fst != ORI_FST_Operational) || 
-         tx0->fst != ORI_FST_Operational || 
-         (openair0_cfg->tx_num_channels > 1 && tx1->fst != ORI_FST_Operational))
-  {}*/	
+         (openair0_cfg->rx_num_channels > 2 && rx2->fst != ORI_FST_Operational) || 
+         (openair0_cfg->rx_num_channels > 3 && rx3->fst != ORI_FST_Operational))  
+  {}
+*/	
   // test RX interface 
   uint64_t TS;
-  char temp_rx[1024] __attribute__((aligned(32)));
+  int64_t deltaTS,olddeltaTS=-1;
   int aid,r0=0,r1=(openair0_cfg->rx_num_channels > 1) ? 0 : 1;
   int r2=(openair0_cfg->rx_num_channels > 2) ? 0 : 1;
   int r3=(openair0_cfg->rx_num_channels > 3) ? 0 : 1;
 
   int i;
   int Npackets=1024000;
+  openair0_timestamp oldTS=0;
+  int fhjumps=0;
   for (i=0;i<Npackets;i++) {
     device->trx_read_func2(device,
                            (openair0_timestamp*)&TS,
-                           (void*)temp_rx,
+                           NULL,
                            256,
+                           0,
                            &aid);
     if (aid == 0) r0=1;
     if (aid == 1) r1=1;
     if (aid == 2) r2=1;
     if (aid == 3) r3=1;
+    if (aid==0) {
+      deltaTS = TS-oldTS;
+      oldTS=TS;
+      if (deltaTS != olddeltaTS && olddeltaTS > 0) {
+          fhjumps++;
+      }
+      if (i>0) olddeltaTS = deltaTS;
+    }
   }
-  if (r0==1 && r1==1 && r2==1 && r3==1) printf("Streaming started, returning to OAI\n");
+  if (r0==1 && r1==1 && r2==1 && r3==1) printf("Streaming started, returning to OAI, fghjumps %d\n",fhjumps);
   else {
     printf("Didn't get anything from one antenna port after %d packets %d,%d,%d,%d\n",Npackets,r0,r1,r2,r3);
     return(-1);
diff --git a/targets/ARCH/COMMON/common_lib.h b/targets/ARCH/COMMON/common_lib.h
index 5c6ff2c669..70f6982b92 100644
--- a/targets/ARCH/COMMON/common_lib.h
+++ b/targets/ARCH/COMMON/common_lib.h
@@ -411,12 +411,13 @@ struct openair0_device_t {
    * was received.
    * \param device the hardware to use
    * \param[out] ptimestamp the time at which the first sample was received.
-   * \param[out] buff A pointers to a buffer for received samples. The buffer must be large enough to hold the number of samples \ref nsamps.
+   * \param[out] buff A pointer to a buffer[ant_id][] for received samples. The buffer[ant_id] must be large enough to hold the number of samples \ref nsamps * the number of packets.
    * \param nsamps Number of samples. One sample is 2 byte I + 2 byte Q => 4 byte.
+   * \param packet_idx offset into
    * \param antenna_id Index of antenna from which samples were received
    * \returns the number of sample read
    */
-  int (*trx_read_func2)(openair0_device *device, openair0_timestamp *ptimestamp, void *buff, int nsamps,int *antenna_id);
+  int (*trx_read_func2)(openair0_device *device, openair0_timestamp *ptimestamp, uint32_t **buff, int nsamps,int packet_idx,int *antenna_id);
 
   /*! \brief print the device statistics
    * \param device the hardware to use
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index ee0dce48f0..68a45dfe26 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -297,7 +297,7 @@ int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, voi
 #endif
 
     
-    // bring TX data into 12 LSBs for softmodem RX
+    // bring TX data into 12 MSBs 
   for (int j=0; j<nsamps2; j++) {
 #if defined(__x86_64__) || defined(__i386__)
 #ifdef __AVX2__
@@ -389,9 +389,7 @@ int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, voi
 }
       
 
-#define NOSHIFT 1
-
-int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, void *buff, int nsamps, int *cc) {
+int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uint32_t **buff, int nsamps, int packet_idx,int *cc) {
   
   int bytes_received=0;
   eth_state_t *eth = (eth_state_t*)device->priv;
@@ -402,41 +400,25 @@ int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, voi
   static int packet_cnt=0;
   int payload_size = UDP_PACKET_SIZE_BYTES(nsamps);
 
-#if defined(__x86_64__) || defined(__i386__)
-#ifdef __AVX2__
-    int nsamps2 = (payload_size>>5)+1;
-  __m256i temp_rx[nsamps2];
-  char *temp_rx0 = ((char *)&temp_rx[1])-APP_HEADER_SIZE_BYTES;
-#else
-    int nsamps2 = (payload_size>>4)+1;
-  __m128i temp_rx[nsamps2];
-  char *temp_rx0 = ((char *)&temp_rx[1])-APP_HEADER_SIZE_BYTES;  
-#endif
-#elif defined(__arm__) || defined(__aarch64__)
-  int nsamps2 = (payload_size>>4)+1;
-  int16x8_t temp_rx[nsamps2];
-  char *temp_rx0 = ((char *)&temp_rx[1])-APP_HEADER_SIZE_BYTES;  
-#else
-#error Unsupported CPU architecture device cannot be built
-  int nsamps2 = (payload_size>>2)+1;
-  int32_t temp_rx[payload_size>>2];
-  char* *temp_rx0 = ((char *)&temp_rx[1]) - APP_HEADER_SIZE_BYTES;  
-#endif
+  int nsamps2 = (payload_size>>2)+(APP_HEADER_SIZE_BYTES>>2);
+  int32_t temp_rx[nsamps2+1];
+  char *temp_rx0 = ((char *)&temp_rx[1+(APP_HEADER_SIZE_BYTES>>2)]) - APP_HEADER_SIZE_BYTES;  
   
   eth->rx_nsamps=nsamps;
 
   bytes_received=0;
   block_cnt=0;
   AssertFatal(eth->compression == NO_COMPRESS, "IF5 compression not supported for now\n");
-  
+ 
   while(bytes_received < payload_size) {
   again:
+//    LOG_I(PHY,"temp_rx0 %p, temp_rx[0] %p temp_rx[APP_HEADER_SIZE_BYTES>>2] %p APP_HEADER_SIZE_BYTES %ld\n",temp_rx0,&temp_rx[0],&temp_rx[APP_HEADER_SIZE_BYTES>>2],APP_HEADER_SIZE_BYTES); 
     bytes_received +=recvfrom(eth->sockfdd,
-			      temp_rx0,
+			      (void*)temp_rx0,
 			      payload_size,
 			      rcvfrom_flag,
 			      (struct sockaddr *)&eth->dest_addrd,
-			      (socklen_t *)&eth->addr_len);
+			      (socklen_t *)&eth->addr_len); 
     packet_cnt++;
     if (bytes_received ==-1) {
       eth->num_rx_errors++;
@@ -473,22 +455,9 @@ int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, voi
     eth->rx_count++;
   }	 
 
-#ifdef NOSHIFT
-  memcpy(buff,(void*)(temp_rx+1),payload_size); 
-#else
-  // populate receive buffer in lower 12-bits from 16-bit representation
-  for (int j=1; j<nsamps2; j++) {
-#if defined(__x86_64__) || defined(__i386__)
-#ifdef __AVX2__
-       ((__m256i *)buff)[j-1] = _mm256_srai_epi16(temp_rx[j],2);
-#else
-       ((__m128i *)buff)[j-1] = _mm_srai_epi16(temp_rx[j],2);
-#endif
-#elif defined(__arm__)
-       ((int16x8_t *)buff)[j] = vshrq_n_s16(temp_rx[i][j],2);
-#endif
-  }
-#endif
+  if (buff) memcpy((void*)(buff[*cc]+packet_idx*nsamps),
+                    (void*)(temp_rx+1),
+                    nsamps<<2); 
   
   return (payload_size>>2);
 }
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
index c15bdc37cb..a496df74bc 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
@@ -145,10 +145,10 @@ int trx_eth_start(openair0_device *device)
         if(ethernet_tune (device,RCV_TIMEOUT,999999)!=0)  return -1;
     }
     /* apply additional configuration */
-    if(ethernet_tune (device, SND_BUF_SIZE,2000000000)!=0)  return -1;
-    if(ethernet_tune (device, RCV_BUF_SIZE,2000000000)!=0)  return -1;
-    if(ethernet_tune (device, KERNEL_SND_BUF_MAX_SIZE, 200000000)!=0)  return -1;
-    if(ethernet_tune (device, KERNEL_RCV_BUF_MAX_SIZE, 200000000)!=0)  return -1;
+    if(ethernet_tune (device, SND_BUF_SIZE,67108864)!=0)  return -1;
+    if(ethernet_tune (device, RCV_BUF_SIZE,67108864)!=0)  return -1;
+    if(ethernet_tune (device, KERNEL_SND_BUF_MAX_SIZE, 67108864)!=0)  return -1;
+    if(ethernet_tune (device, KERNEL_RCV_BUF_MAX_SIZE, 67108864)!=0)  return -1;
 
 
     return 0;
@@ -357,7 +357,7 @@ int ethernet_tune(openair0_device *device,
         }
         break;
     case KERNEL_RCV_BUF_MAX_SIZE:
-      ret=snprintf(system_cmd,sizeof(system_cmd),"sysctl -w net.core.rmem_max=%d",value);
+      ret=snprintf(system_cmd,sizeof(system_cmd),"sysctl -w net.core.rmem_max=%d;sysctl -w net.core.rmem_default=%d",value,value);
       if (ret > 0) {
 	ret=system(system_cmd);
 	if (ret == -1) {
@@ -371,7 +371,7 @@ int ethernet_tune(openair0_device *device,
       }
       break;
     case KERNEL_SND_BUF_MAX_SIZE:
-      ret=snprintf(system_cmd,sizeof(system_cmd),"sysctl -w net.core.wmem_max=%d",value);
+      ret=snprintf(system_cmd,sizeof(system_cmd),"sysctl -w net.core.wmem_max=%d;sysctl -w net.core.wmem_default=%d;sysctl -w net.core.netdev_max_backlog=416384;sysctl -w net.core.optmem_max=524288;",value,value);
       if (ret > 0) {
 	ret=system(system_cmd);
 	if (ret == -1) {
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
index ad64ac1a8a..05d5b37121 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
@@ -238,7 +238,7 @@ int ethernet_tune(openair0_device *device, unsigned int option, int value);
 */
 int eth_socket_init_udp(openair0_device *device);
 int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, void *buff, int nsamps,int cc, int flags);
-int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, void *buff, int nsamps, int *cc);
+int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uint32_t **buff, int nsamps, int packet_idx,int *cc);
 
 
 int eth_socket_init_raw(openair0_device *device);

From 070b663a54c1e2a011d20834ad289e3316162448 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Mon, 14 Mar 2022 13:29:16 +0100
Subject: [PATCH 02/28] intermediate commit

---
 openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c |  4 -
 targets/ARCH/AW2SORI/oaiori.c                 | 83 +++++++++++++------
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c |  4 +-
 3 files changed, 60 insertions(+), 31 deletions(-)

diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
index 127a3cd55b..fe0ba251cb 100644
--- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
@@ -1054,11 +1054,7 @@ void fill_msg3_pusch_pdu(nfapi_nr_pusch_pdu_t *pusch_pdu,
   pusch_pdu->data_scrambling_id = *scc->physCellId;
   pusch_pdu->nrOfLayers = 1;
   pusch_pdu->ul_dmrs_symb_pos = get_l_prime(nr_of_symbols,mappingtype,pusch_dmrs_pos2,pusch_len1,start_symbol_index, scc->dmrs_TypeA_Position);
-<<<<<<< HEAD
-  LOG_I(MAC, "MSG3 mcs %d, nb_rb %d, first_rb %d, start_sym:%d NR Symb:%d mappingtype:%d , ul_dmrs_symb_pos:%x\n", pusch_pdu->mcs_index,msg3_nb_rb,msg3_first_rb, start_symbol_index, nr_of_symbols, mappingtype, pusch_pdu->ul_dmrs_symb_pos);
-=======
   LOG_D(NR_MAC, "MSG3 start_sym:%d NR Symb:%d mappingtype:%d, ul_dmrs_symb_pos:%x\n", start_symbol_index, nr_of_symbols, mappingtype, pusch_pdu->ul_dmrs_symb_pos);
->>>>>>> tdd25period_for_MR
   pusch_pdu->dmrs_config_type = 0;
   pusch_pdu->ul_dmrs_scrambling_id = *scc->physCellId; //If provided and the PUSCH is not a msg3 PUSCH, otherwise, L2 should set this to physical cell id.
   pusch_pdu->scid = 0; //DMRS sequence initialization [TS38.211, sec 6.4.1.1.1]. Should match what is sent in DCI 0_1, otherwise set to 0.
diff --git a/targets/ARCH/AW2SORI/oaiori.c b/targets/ARCH/AW2SORI/oaiori.c
index 3173e7e08c..9f148b5710 100644
--- a/targets/ARCH/AW2SORI/oaiori.c
+++ b/targets/ARCH/AW2SORI/oaiori.c
@@ -221,6 +221,42 @@ int aw2s_oricleanup(openair0_device *device) {
   return(0);
 }
 
+typedef struct fhstate_s {
+  int Npackets;
+  openair0_timestamp olddeltaTS;
+  openair0_timestamp oldTS;
+  int fhjumps;
+  openair0_device *device;
+  int r0;
+  int r1;
+  int r2;
+  int r3;
+} fhstate_t;
+
+  openair0_timestamp TS;
+  int64_t deltaTS,olddeltaTS=-1;
+  int aid,r0=0;
+  r1=(openair0_cfg->rx_num_channels > 1) ? 0 : 1;
+  for (i=0;i<fhstate->Npackets;i++) {
+    device->trx_read_func2(fhstate->device,
+                           fhstate->TS,
+                           NULL,
+                           256,
+                           0,
+                           &aid);
+    if (aid == 0) fhstate->r0=1;
+    if (aid == 1) fhstate->r1=1;
+    if (aid == 2) fhstate->r2=1;
+    if (aid == 3) fhstate->r3=1;
+    if (aid==0) {
+      deltaTS = TS-oldTS;
+      fhstate-> oldTS=TS;
+      if (deltaTS != fhstate->olddeltaTS && fhstate->olddeltaTS > 0) {
+          fhstate->fhjumps++;
+      }
+      if (i>0) fhstate->olddeltaTS = deltaTS;
+    }
+  }
 int aw2s_startstreaming(openair0_device *device) {
 
   ORI_s *               ori = (ORI_s*)device->thirdparty_priv;
@@ -414,7 +450,6 @@ int aw2s_startstreaming(openair0_device *device) {
 /*  
   while (rx0->fst != ORI_FST_Operational || 
          (openair0_cfg->rx_num_channels > 1 && rx1->fst != ORI_FST_Operational) || 
-<<<<<<< HEAD
          (openair0_cfg->rx_num_channels > 2 && rx2->fst != ORI_FST_Operational) || 
          (openair0_cfg->rx_num_channels > 3 && rx3->fst != ORI_FST_Operational))  
   {}
@@ -422,45 +457,43 @@ int aw2s_startstreaming(openair0_device *device) {
   // test RX interface 
   uint64_t TS;
   int64_t deltaTS,olddeltaTS=-1;
-=======
-         tx0->fst != ORI_FST_Operational || 
-         (openair0_cfg->tx_num_channels > 1 && tx1->fst != ORI_FST_Operational))
-  {}*/  	
-  // test RX interface 
-  uint64_t TS;
-  char temp_rx[2048] __attribute__((aligned(32)));
->>>>>>> tdd25period_for_MR
   int aid,r0=0,r1=(openair0_cfg->rx_num_channels > 1) ? 0 : 1;
   int r2=(openair0_cfg->rx_num_channels > 2) ? 0 : 1;
   int r3=(openair0_cfg->rx_num_channels > 3) ? 0 : 1;
 
   int i;
-  int Npackets=1024000;
-  openair0_timestamp oldTS=0;
-  int fhjumps=0;
-  for (i=0;i<Npackets;i++) {
-    device->trx_read_func2(device,
+  fhstate_t fhstate;
+
+  fhstate.Npackets=1024000;
+  fhstate.oldTS=0;
+  fhstate.fhjumps=0;
+  fhstate.r0=0;
+  fhstate.r1=(openair0_cfg->rx_num_channels > 1) ? 0 : 1;
+  fhstate.r2=(openair0_cfg->rx_num_channels > 2) ? 0 : 1;
+  fhstate.r3=(openair0_cfg->rx_num_channels > 3) ? 0 : 1;
+  for (i=0;i<fhstate->Npackets;i++) {
+    device->trx_read_func2(fhstate->device,
                            (openair0_timestamp*)&TS,
                            NULL,
                            256,
                            0,
                            &aid);
-    if (aid == 0) r0=1;
-    if (aid == 1) r1=1;
-    if (aid == 2) r2=1;
-    if (aid == 3) r3=1;
+    if (aid == 0) fhstate->r0=1;
+    if (aid == 1) fhstate->r1=1;
+    if (aid == 2) fhstate->r2=1;
+    if (aid == 3) fhstate->r3=1;
     if (aid==0) {
-      deltaTS = TS-oldTS;
-      oldTS=TS;
-      if (deltaTS != olddeltaTS && olddeltaTS > 0) {
-          fhjumps++;
+      deltaTS = TS-fhstate->oldTS;
+      fhstate->oldTS=TS;
+      if (deltaTS != fhstate->olddeltaTS && fhstate->olddeltaTS > 0) {
+          fhstate->fhjumps++;
       }
-      if (i>0) olddeltaTS = deltaTS;
+      if (i>0) fhstate->olddeltaTS = deltaTS;
     }
   }
-  if (r0==1 && r1==1 && r2==1 && r3==1) printf("Streaming started, returning to OAI, fghjumps %d\n",fhjumps);
+  if (fhstate.r0==1 && fhstate.r1==1 && fhstate.r2==1 && fhstate.r3==1) printf("Streaming started, returning to OAI, fhjumps %d\n",fhjumps);
   else {
-    printf("Didn't get anything from one antenna port after %d packets %d,%d,%d,%d\n",Npackets,r0,r1,r2,r3);
+    printf("Didn't get anything from one antenna port after %d packets %d,%d,%d,%d\n",fhstate.Npackets,fhstate.r0,fhstate.r1,fhstate.r2,fhstater3);
     return(-1);
   }
   return(0);
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index 68a45dfe26..3621d1d837 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -400,6 +400,7 @@ int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uin
   static int packet_cnt=0;
   int payload_size = UDP_PACKET_SIZE_BYTES(nsamps);
 
+  // we need a temporary storage buffer since the antenna ID is in the packet
   int nsamps2 = (payload_size>>2)+(APP_HEADER_SIZE_BYTES>>2);
   int32_t temp_rx[nsamps2+1];
   char *temp_rx0 = ((char *)&temp_rx[1+(APP_HEADER_SIZE_BYTES>>2)]) - APP_HEADER_SIZE_BYTES;  
@@ -446,9 +447,8 @@ int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uin
     } else {
       /* store the timestamp value from packet's header */
       *timestamp =  *(openair0_timestamp *)(temp_rx0 + ECPRICOMMON_BYTES+ECPRIPCID_BYTES);
-      // convert TS to samples, /3 for 30.72 Ms/s, /6 for 15.36 Ms/s, /12 for 7.68 Ms/s, etc.
+      // convert TS to samples, /6 for AW2S @ 30.72 Ms/s, this is converted for other sample rates in OAI application
       *timestamp = *timestamp/6;
-      // handle 1.4,3,5,10,15 MHz cases
       *cc        = *(uint16_t*)(temp_rx0 + ECPRICOMMON_BYTES);
     }
     eth->rx_actual_nsamps=payload_size>>2;

From 8fdf4af6aac99b3a43b4bbf4e7828813a1e3878a Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Sun, 3 Apr 2022 22:23:33 +0200
Subject: [PATCH 03/28] added multiple thread support for ECPRI/IF5 interface.
 Uses SO_REUSEPORT for listening with multiple sockets in different threads

---
 executables/nr-ru.c                           |  10 +-
 openair1/PHY/LTE_TRANSPORT/if5_tools.c        |   7 +-
 targets/ARCH/AW2SORI/oaiori.c                 |  91 +----------
 targets/ARCH/COMMON/common_lib.h              |  36 ++++-
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_raw.c |  33 ++--
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c | 153 +++++++++++-------
 .../ETHERNET/USERSPACE/LIB/ethernet_lib.c     | 119 +++++++++-----
 .../ETHERNET/USERSPACE/LIB/ethernet_lib.h     |  10 +-
 8 files changed, 252 insertions(+), 207 deletions(-)

diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index 8852c21381..48c57434bd 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -306,7 +306,7 @@ void fh_if5_south_in(RU_t *ru,
   int is_rx=1;
   int slot_type = nr_slot_select(cfg,*frame,*tti);
   if (slot_type == NR_DOWNLINK_SLOT) is_rx=0;
-  recv_IF5(ru, &proc->timestamp_rx, *tti, IF5_RRH_GW_UL,is_rx);
+  ru->ifdevice.trx_read_func2(&ru->ifdevice,&proc->timestamp_rx,NULL,fp->get_samples_per_slot(*tti,fp)); 
   if (proc->first_rx == 1) ru->ts_offset = proc->timestamp_rx;
   proc->frame_rx    = ((proc->timestamp_rx-ru->ts_offset) / (fp->samples_per_subframe*10))&1023;
   proc->tti_rx = fp->get_slot_from_timestamp(proc->timestamp_rx-ru->ts_offset,fp);
@@ -1029,6 +1029,7 @@ void fill_rf_config(RU_t *ru, char *rf_config_file) {
   cfg->num_rb_dl=N_RB;
   cfg->tx_num_channels=ru->nb_tx;
   cfg->rx_num_channels=ru->nb_rx;
+  LOG_I(PHY,"Setting RF config for N_RB %d, NB_RX %d, NB_TX %d\n",cfg->num_rb_dl,cfg->rx_num_channels,cfg->tx_num_channels);
 
   for (i=0; i<ru->nb_tx; i++) {
     if (ru->if_frequency == 0) {
@@ -1272,7 +1273,7 @@ void *ru_thread( void *param ) {
 
     // Start IF device if any
     if (ru->nr_start_if) {
-      LOG_I(PHY,"Starting IF interface for RU %d\n",ru->idx);
+      LOG_I(PHY,"Starting IF interface for RU %d, nb_rx %d\n",ru->idx,ru->nb_rx);
       AssertFatal(ru->nr_start_if(ru,NULL) == 0, "Could not start the IF device\n");
 
       if (ru->has_ctrl_prt > 0) {
@@ -1362,7 +1363,7 @@ void *ru_thread( void *param ) {
     }
 
     // synchronization on input FH interface, acquire signals/data and block
-    LOG_D(PHY,"[RU_thread] read data: frame_rx = %d, tti_rx = %d\n", frame, slot);
+    LOG_I(PHY,"[RU_thread] read data: frame_rx = %d, tti_rx = %d\n", frame, slot);
 
     if (ru->fh_south_in) ru->fh_south_in(ru,&frame,&slot);
     else AssertFatal(1==0, "No fronthaul interface at south port");
@@ -1495,6 +1496,8 @@ int start_streaming(RU_t *ru) {
 }
 
 int nr_start_if(struct RU_t_s *ru, struct PHY_VARS_gNB_s *gNB) {
+  for (int i=0;i<ru->nb_rx;i++) ru->openair0_cfg.rxbase[i] = ru->common.rxdata[i];
+  ru->openair0_cfg.rxsize = ru->nr_frame_parms->samples_per_subframe*10;
   return(ru->ifdevice.trx_start_func(&ru->ifdevice));
 }
 
@@ -1845,6 +1848,7 @@ void set_function_spec_param(RU_t *ru) {
       ru->ifdevice.host_type     = RAU_HOST;
       ru->ifdevice.eth_params    = &ru->eth_params;
       ru->ifdevice.configure_rru = configure_ru;
+
       ret = openair0_transport_load(&ru->ifdevice,&ru->openair0_cfg,&ru->eth_params);
       printf("openair0_transport_init returns %d for ru_id %u\n", ret, ru->idx);
 
diff --git a/openair1/PHY/LTE_TRANSPORT/if5_tools.c b/openair1/PHY/LTE_TRANSPORT/if5_tools.c
index 8eddd9366c..5f6376c51b 100644
--- a/openair1/PHY/LTE_TRANSPORT/if5_tools.c
+++ b/openair1/PHY/LTE_TRANSPORT/if5_tools.c
@@ -1362,14 +1362,15 @@ void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t pa
       for (packet_id=0; packet_id < ru->nb_rx*siglen / spp_eth; packet_id++) {
         //VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SEND_IF5_PKT_ID, packet_id );
         //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF0, 1 );
+        for (i=0;i<ru->nb_rx;i++) _mm_prefetch((char*)rxp[i][packet_id*spp_eth],_MM_HINT_NTA);
         clock_gettime( CLOCK_MONOTONIC, &if_time);
         timein[packet_id] = if_time.tv_nsec;
-        ru->ifdevice.trx_read_func2(&ru->ifdevice,
+/*        ru->ifdevice.trx_read_func2(&ru->ifdevice,
 				   &timestamp[packet_id],
 				   (is_rx>0) ? rxp : NULL,
 				   spp_eth,
                                    packet_id,
-				   &aid);
+				   &aid);*/
         clock_gettime( CLOCK_MONOTONIC, &if_time);
         timeout[packet_id] = if_time.tv_nsec;
         timestamp[packet_id] = (timestamp[packet_id]*factor_n)/factor_d; 
@@ -1380,7 +1381,7 @@ void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t pa
            if (firstTS==1) firstTS=0;
            else if (oldTS + spp_eth != timestamp[packet_id]) {
               LOG_I(PHY,"oldTS %llu, newTS %llu, diff %llu, timediff %ld\n",(long long unsigned int)oldTS,(long long unsigned int)timestamp[packet_id],(long long unsigned int)timestamp[packet_id]-oldTS,-timein[packet_id]+timeout[packet_id]); 
-              for (int i=0;i<=packet_id;i++) LOG_I(PHY,"packet %d aid %d TS %llu, timediff %ld\n",i,aid_list[i],(long long unsigned int)timestamp[i],-timein[i]+timeout[i]);
+              for (int i=0;i<=packet_id;i++) LOG_I(PHY,"packet %d/%d aid %d TS %llu, timediff %ld\n",i,ru->nb_rx*siglen / spp_eth,aid_list[i],(long long unsigned int)timestamp[i],-timein[i]+timeout[i]);
               AssertFatal(1==0,"fronthaul problem\n");
            }
 
diff --git a/targets/ARCH/AW2SORI/oaiori.c b/targets/ARCH/AW2SORI/oaiori.c
index 9f148b5710..67de3a3c5d 100644
--- a/targets/ARCH/AW2SORI/oaiori.c
+++ b/targets/ARCH/AW2SORI/oaiori.c
@@ -16,16 +16,18 @@
 #include <stdlib.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>
+#include <sys/uio.h>
 #include <net/if.h>
 #include <netinet/ether.h>
 #include <unistd.h>
 #include <errno.h>
 #include <linux/sysctl.h>
 #include <sys/sysctl.h>
+#include <pthread.h>
 
 #include "common_lib.h"
 #include "ethernet_lib.h"
-
+#include "common/utils/system.h"
 #include "ori.h"
 
 #include "targets/ARCH/COMMON/common_lib.h"
@@ -221,42 +223,6 @@ int aw2s_oricleanup(openair0_device *device) {
   return(0);
 }
 
-typedef struct fhstate_s {
-  int Npackets;
-  openair0_timestamp olddeltaTS;
-  openair0_timestamp oldTS;
-  int fhjumps;
-  openair0_device *device;
-  int r0;
-  int r1;
-  int r2;
-  int r3;
-} fhstate_t;
-
-  openair0_timestamp TS;
-  int64_t deltaTS,olddeltaTS=-1;
-  int aid,r0=0;
-  r1=(openair0_cfg->rx_num_channels > 1) ? 0 : 1;
-  for (i=0;i<fhstate->Npackets;i++) {
-    device->trx_read_func2(fhstate->device,
-                           fhstate->TS,
-                           NULL,
-                           256,
-                           0,
-                           &aid);
-    if (aid == 0) fhstate->r0=1;
-    if (aid == 1) fhstate->r1=1;
-    if (aid == 2) fhstate->r2=1;
-    if (aid == 3) fhstate->r3=1;
-    if (aid==0) {
-      deltaTS = TS-oldTS;
-      fhstate-> oldTS=TS;
-      if (deltaTS != fhstate->olddeltaTS && fhstate->olddeltaTS > 0) {
-          fhstate->fhjumps++;
-      }
-      if (i>0) fhstate->olddeltaTS = deltaTS;
-    }
-  }
 int aw2s_startstreaming(openair0_device *device) {
 
   ORI_s *               ori = (ORI_s*)device->thirdparty_priv;
@@ -447,55 +413,8 @@ int aw2s_startstreaming(openair0_device *device) {
       }
     printf("ORI_ObjectStateModify: %s\n", ORI_Result_Print(RE_result));
   }
-/*  
-  while (rx0->fst != ORI_FST_Operational || 
-         (openair0_cfg->rx_num_channels > 1 && rx1->fst != ORI_FST_Operational) || 
-         (openair0_cfg->rx_num_channels > 2 && rx2->fst != ORI_FST_Operational) || 
-         (openair0_cfg->rx_num_channels > 3 && rx3->fst != ORI_FST_Operational))  
-  {}
-*/	
-  // test RX interface 
-  uint64_t TS;
-  int64_t deltaTS,olddeltaTS=-1;
-  int aid,r0=0,r1=(openair0_cfg->rx_num_channels > 1) ? 0 : 1;
-  int r2=(openair0_cfg->rx_num_channels > 2) ? 0 : 1;
-  int r3=(openair0_cfg->rx_num_channels > 3) ? 0 : 1;
 
-  int i;
-  fhstate_t fhstate;
-
-  fhstate.Npackets=1024000;
-  fhstate.oldTS=0;
-  fhstate.fhjumps=0;
-  fhstate.r0=0;
-  fhstate.r1=(openair0_cfg->rx_num_channels > 1) ? 0 : 1;
-  fhstate.r2=(openair0_cfg->rx_num_channels > 2) ? 0 : 1;
-  fhstate.r3=(openair0_cfg->rx_num_channels > 3) ? 0 : 1;
-  for (i=0;i<fhstate->Npackets;i++) {
-    device->trx_read_func2(fhstate->device,
-                           (openair0_timestamp*)&TS,
-                           NULL,
-                           256,
-                           0,
-                           &aid);
-    if (aid == 0) fhstate->r0=1;
-    if (aid == 1) fhstate->r1=1;
-    if (aid == 2) fhstate->r2=1;
-    if (aid == 3) fhstate->r3=1;
-    if (aid==0) {
-      deltaTS = TS-fhstate->oldTS;
-      fhstate->oldTS=TS;
-      if (deltaTS != fhstate->olddeltaTS && fhstate->olddeltaTS > 0) {
-          fhstate->fhjumps++;
-      }
-      if (i>0) fhstate->olddeltaTS = deltaTS;
-    }
-  }
-  if (fhstate.r0==1 && fhstate.r1==1 && fhstate.r2==1 && fhstate.r3==1) printf("Streaming started, returning to OAI, fhjumps %d\n",fhjumps);
-  else {
-    printf("Didn't get anything from one antenna port after %d packets %d,%d,%d,%d\n",fhstate.Npackets,fhstate.r0,fhstate.r1,fhstate.r2,fhstater3);
-    return(-1);
-  }
+  device->fhstate.active=1; 
   return(0);
 
 }
@@ -977,7 +896,7 @@ int aw2s_oriinit(openair0_device *device) {
 
 int transport_init(openair0_device *device, openair0_config_t *openair0_cfg, eth_params_t * eth_params ) {
 
-  
+  printf("Initializing AW2S (%p,%p,%p)\n",aw2s_oriinit,aw2s_oricleanup,aw2s_startstreaming); 
   device->thirdparty_init           = aw2s_oriinit;
   device->thirdparty_cleanup        = aw2s_oricleanup;
   device->thirdparty_startstreaming = aw2s_startstreaming;
diff --git a/targets/ARCH/COMMON/common_lib.h b/targets/ARCH/COMMON/common_lib.h
index 70f6982b92..dc31c00221 100644
--- a/targets/ARCH/COMMON/common_lib.h
+++ b/targets/ARCH/COMMON/common_lib.h
@@ -151,6 +151,12 @@ typedef enum {
   gpsdo=2
 } clock_source_t;
 
+/*! \brief Structure used for initializing UDP read threads */
+typedef struct {
+  openair0_device *device;
+  int thread_id;
+  pthread_t pthread;
+} udp_read_t;
 
 /*! \brief RF frontend parameters set by application */
 typedef struct {
@@ -176,9 +182,11 @@ typedef struct {
   int rx_num_channels;
   //! number of TX channels (=TX antennas)
   int tx_num_channels;
-  //! \brief RX base addresses for mmapped_dma
+  //! \brief RX base addresses for mmapped_dma or direct access
   int32_t *rxbase[4];
-  //! \brief TX base addresses for mmapped_dma
+  //! \brief RX buffer size for direct access
+  int rxsize;
+  //! \brief TX base addresses for mmapped_dma or direct access
   int32_t *txbase[4];
   //! \brief Center frequency in Hz for RX.
   //! index: [0..rx_num_channels[
@@ -309,6 +317,18 @@ typedef struct {
   pthread_mutex_t mutex_write;
 } openair0_thread_t;
 
+typedef struct fhstate_s {
+  openair0_timestamp TS[8]; 
+  openair0_timestamp TS0;
+  openair0_timestamp olddeltaTS[8];
+  openair0_timestamp oldTS[8];
+  openair0_timestamp TS_read;
+  uint32_t *buff[8];
+  uint32_t buff_size;
+  int r[8];
+  int active;
+} fhstate_t;
+
 /*!\brief structure holds the parameters to configure USRP devices */
 struct openair0_device_t {
   /*!tx write thread*/
@@ -343,6 +363,15 @@ struct openair0_device_t {
   /*!brief Can be used by driver to hold internal structure*/
   void *priv;
 
+  /*!brief pointer to FH state, used in ECPRI split 8*/
+  fhstate_t fhstate;
+
+  /*!bried Used in ECPRI split 8 to indicate numerator of sampling rate ratio*/
+  int sampling_rate_ratio_n;
+
+  /*!bried Used in ECPRI split 8 to indicate denominator of sampling rate ratio*/
+  int sampling_rate_ratio_d;
+
   /* Functions API, which are called by the application*/
 
   /*! \brief Called to start the transceiver. Return 0 if OK, < 0 if error
@@ -417,7 +446,7 @@ struct openair0_device_t {
    * \param antenna_id Index of antenna from which samples were received
    * \returns the number of sample read
    */
-  int (*trx_read_func2)(openair0_device *device, openair0_timestamp *ptimestamp, uint32_t **buff, int nsamps,int packet_idx,int *antenna_id);
+  int (*trx_read_func2)(openair0_device *device, openair0_timestamp *ptimestamp, uint32_t **buff, int nsamps);
 
   /*! \brief print the device statistics
    * \param device the hardware to use
@@ -466,6 +495,7 @@ struct openair0_device_t {
 /*! \brief Pointer to generic RRU private information
    */
 
+
   void *thirdparty_priv;
 
   /*! \brief Callback for Third-party RRU Initialization routine
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_raw.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_raw.c
index 9c0a9e3f65..89d6c97c3f 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_raw.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_raw.c
@@ -80,10 +80,11 @@ int eth_socket_init_raw(openair0_device *device) {
     perror("ETHERNET: Error opening RAW socket (control)");
     exit(0);
   }
-  if ((eth->sockfdd = socket(sock_dom, sock_type, sock_proto)) == -1) {
-    perror("ETHERNET: Error opening RAW socket (user)");
-    exit(0);
-  }
+  for (int i=0;i<eth->num_fd;i++)
+    if ((eth->sockfdd[i] = socket(sock_dom, sock_type, sock_proto)) == -1) {
+       perror("ETHERNET: Error opening RAW socket (user)");
+       exit(0);
+    }
   
   /* initialize destination address */
   bzero((void *)&(eth->local_addrc_ll), sizeof(struct sockaddr_ll));
@@ -94,8 +95,9 @@ int eth_socket_init_raw(openair0_device *device) {
   strcpy(eth->if_index.ifr_name,eth->if_name);
   if (ioctl(eth->sockfdc, SIOCGIFINDEX, &(eth->if_index)) < 0)
     perror("SIOCGIFINDEX");
-  if (ioctl(eth->sockfdd, SIOCGIFINDEX, &(eth->if_index)) < 0)
-    perror("SIOCGIFINDEX");
+  for (int i=0;i<eth->num_fd;i++)
+    if (ioctl(eth->sockfdd[i], SIOCGIFINDEX, &(eth->if_index)) < 0)
+      perror("SIOCGIFINDEX");
    
   eth->local_addrc_ll.sll_family   = AF_PACKET;
   eth->local_addrc_ll.sll_ifindex  = eth->if_index.ifr_ifindex;
@@ -111,10 +113,11 @@ int eth_socket_init_raw(openair0_device *device) {
   eth->local_addrd_ll.sll_pkttype  = PACKET_OTHERHOST;
   eth->addr_len = sizeof(struct sockaddr_ll);
   
-  if (bind(eth->sockfdd,(struct sockaddr *)&eth->local_addrd_ll,eth->addr_len)<0) {
-    perror("ETHERNET: Cannot bind to socket (user)");
-    exit(0);
-  }
+  for (int i=0;i<eth->num_fd;i++)
+    if (bind(eth->sockfdd[i],(struct sockaddr *)&eth->local_addrd_ll,eth->addr_len)<0) {
+      perror("ETHERNET: Cannot bind to socket (user)");
+      exit(0);
+    }
  
  /* Construct the Ethernet header */ 
  ether_aton_r(local_mac, (struct ether_addr *)(&(eth->ehd.ether_shost)));
@@ -165,7 +168,7 @@ int trx_eth_write_raw(openair0_device *device, openair0_timestamp timestamp, voi
 
       /* Send packet */
 
-      bytes_sent += send(eth->sockfdd,
+      bytes_sent += send(eth->sockfdd[cc % eth->num_fd],
 			 buff2, 
 			 pktsize,
 			 sendto_flag);
@@ -214,7 +217,7 @@ int trx_eth_write_raw_IF4p5(openair0_device *device, openair0_timestamp timestam
   memcpy(buff[0], (void*)&eth->ehd, MAC_HEADER_SIZE_BYTES);	
 
 
-  bytes_sent = send(eth->sockfdd,
+  bytes_sent = send(eth->sockfdd[cc % eth->num_fd],
                     buff[0], 
                     packet_size,
                     0);
@@ -266,7 +269,7 @@ int trx_eth_read_raw(openair0_device *device, openair0_timestamp *timestamp, voi
       
       while(bytes_received < receive_bytes) {
       again:
-	ret = recv(eth->sockfdd,
+	ret = recv(eth->sockfdd[cc % eth->num_fd],
 			      buff2,
 			      receive_bytes,
 			      rcvfrom_flag);
@@ -345,7 +348,7 @@ int trx_eth_read_raw_IF4p5(openair0_device *device, openair0_timestamp *timestam
 
   while (bytes_received < packet_size) {
   again:
-    ret = recv(eth->sockfdd,
+    ret = recv(eth->sockfdd[cc % eth->num_fd],
 	       buff[0],
 	       packet_size,
 	       MSG_PEEK);                        
@@ -397,7 +400,7 @@ int trx_eth_read_raw_IF4p5(openair0_device *device, openair0_timestamp *timestam
   }  
   
   while(bytes_received < packet_size) {
-    ret = recv(eth->sockfdd,
+    ret = recv(eth->sockfdd[cc % eth->num_fd],
 	       buff[0],
 	       packet_size,
 	       0);
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index 3621d1d837..a39d27d55a 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -101,10 +101,11 @@ int eth_socket_init_udp(openair0_device *device) {
     exit(0);
   }
 
-  if ((eth->sockfdd = socket(sock_dom, sock_type, sock_proto)) == -1) {
-    perror("ETHERNET: Error opening socket (user)");
-    exit(0);
-  }
+  for (int i = 0;i<eth->num_fd;i++)
+    if ((eth->sockfdd[i] = socket(sock_dom, sock_type, sock_proto)) == -1) {
+      printf("ETHERNET: Error opening socket (user %d)",i);
+      exit(0);
+    }
   
   /* initialize addresses */
   bzero((void *)&(eth->dest_addrc), sizeof(eth->dest_addrc));
@@ -141,9 +142,15 @@ int eth_socket_init_udp(openair0_device *device) {
     perror("ETHERNET: Cannot set SO_REUSEADDR option on socket (control)");
     exit(0);
   }
-  if (setsockopt(eth->sockfdd, SOL_SOCKET, SO_NO_CHECK, &enable, sizeof(int))) {
-    perror("ETHERNET: Cannot set SO_NO_CHECK option on socket (user)");
-    exit(0);
+  for (int i=0;i<eth->num_fd;i++) {
+    if (setsockopt(eth->sockfdd[i], SOL_SOCKET, SO_NO_CHECK, &enable, sizeof(int))) {
+      printf("ETHERNET: Cannot set SO_NO_CHECK option on socket (user %d)",i);
+      exit(0);
+    }
+    if (setsockopt(eth->sockfdd[i], SOL_SOCKET, SO_REUSEPORT, &enable, sizeof(int))) {
+      printf("ETHERNET: Cannot set SO_REUSEPORT option on socket (user %d)",i);
+      exit(0);
+    }
   }
   
   /* want to receive -> so bind */   
@@ -153,12 +160,13 @@ int eth_socket_init_udp(openair0_device *device) {
   } else {
     printf("[%s] binding to %s:%d (control)\n",str[hostind],str_local,ntohs(eth->local_addrc.sin_port));
   }
-  if (bind(eth->sockfdd,(struct sockaddr *)&eth->local_addrd,eth->addr_len)<0) {
-    perror("ETHERNET: Cannot bind to socket (user)");
-    exit(0);
-  } else {
-    printf("[%s] binding to %s:%d (user)\n",str[hostind],str_local,ntohs(eth->local_addrd.sin_port));
-  }
+  for (int i=0;i<eth->num_fd;i++)
+    if (bind(eth->sockfdd[i],(struct sockaddr *)&eth->local_addrd,eth->addr_len)<0) {
+      printf("ETHERNET: Cannot bind to socket (user %d)",i);
+      exit(0);
+    } else {
+      printf("[%s] binding to %s:%d (user %d)\n",str[hostind],str_local,ntohs(eth->local_addrd.sin_port),i);
+    }
  
   return 0;
 }
@@ -180,7 +188,7 @@ int trx_eth_read_udp_IF4p5(openair0_device *device, openair0_timestamp *timestam
 
   while(bytes_received == -1) {
   again:
-    bytes_received = recvfrom(eth->sockfdd,
+    bytes_received = recvfrom(eth->sockfdd[cc%eth->num_fd],
                               buff[0],
                               packet_size,
                               0,
@@ -246,7 +254,7 @@ int trx_eth_write_udp_IF4p5(openair0_device *device, openair0_timestamp timestam
    
   eth->tx_nsamps = nblocks;
 
-  bytes_sent = sendto(eth->sockfdd,
+  bytes_sent = sendto(eth->sockfdd[cc%eth->num_fd],
 		      buff[0], 
 		      packet_size,
 		      0,
@@ -357,7 +365,7 @@ int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, voi
 	     bytes_sent);
 #endif
       /* Send packet */
-      bytes_sent = sendto(eth->sockfdd,
+      bytes_sent = sendto(eth->sockfdd[cc%eth->num_fd],
 			   buff2, 
                            sent_byte,
 			   sendto_flag,
@@ -388,11 +396,70 @@ int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, voi
   return (bytes_sent-APP_HEADER_SIZE_BYTES)>>2;
 }
       
+extern int oai_exit;
 
-int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uint32_t **buff, int nsamps, int packet_idx,int *cc) {
+void *udp_read_thread(void *arg) {
+  openair0_timestamp TS;
+
+  int aid;
+  udp_read_t *u = (udp_read_t *)arg;
+  openair0_device *device=u->device;
+  fhstate_t *fhstate = &device->fhstate;
+  char buffer[UDP_PACKET_SIZE_BYTES(256)];
+
+  while (oai_exit == 0) {
+    printf("UDP read thread %d, waiting for start\n",u->thread_id);
+    while (fhstate->active > 0) {
+      size_t count = recvfrom(((eth_state_t*)device->priv)->sockfdd[u->thread_id],
+                              buffer,sizeof(buffer),0,
+                              (struct sockaddr *)&((eth_state_t*)device->priv)->dest_addrd,
+                              (socklen_t *)&((eth_state_t*)device->priv)->addr_len);
+      aid = *(uint16_t*)(&buffer[ECPRICOMMON_BYTES]);
+      TS  = *(openair0_timestamp *)(&buffer[ECPRICOMMON_BYTES+ECPRIPCID_BYTES]);   
+      // convert TS to samples, /6 for AW2S @ 30.72 Ms/s, this is converted for other sample rates in OAI application
+      TS = device->sampling_rate_ratio_n*(TS/device->sampling_rate_ratio_d/6);
+      printf("udp_thread_id %d count %d, aid %d, TS %llu\n",u->thread_id,count,aid,(unsigned long long)TS);
+      if (count <= 0) { printf("problem in recvfrom\n"); exit(-1); }
+      AssertFatal(aid < 8,"Cannot handle more than 8 antennas, got aid %d\n",aid);
+      fhstate->r[aid]=1;
+      if (aid==0 && fhstate->TS[0] == 0) fhstate->TS0 = TS;
+      /* store the timestamp value from packet's header */
+      fhstate->TS[aid] =  TS;
+      int64_t offset =  TS - fhstate->TS0;
+      if (offset > 0) offset = offset % device->openair0_cfg->rxsize;
+      else offset = TS % device->openair0_cfg->rxsize + ((((uint64_t)1)<<63)-(fhstate->TS0-1)) % device->openair0_cfg->rxsize;   
+      printf("udp_thread_id %d aid %d, TS %llu, TS0 %llu, offset %d, size %d\n",u->thread_id,aid,(unsigned long long)TS,fhstate->TS0,offset,device->openair0_cfg->rxsize);
+      // need to do memcpy since there is no guarantee that aid is the same each time, otherwise we could have used
+      // zero-copy and corrected the header component.   	 
+      memcpy((void*)(device->openair0_cfg->rxbase[aid]+offset),
+             (void*)&buffer[APP_HEADER_SIZE_BYTES],
+             count-APP_HEADER_SIZE_BYTES); 
+    }
+    sleep(1);
+  }
+  
+}
+
+int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uint32_t **buff, int nsamps) {
   
-  int bytes_received=0;
   eth_state_t *eth = (eth_state_t*)device->priv;
+  fhstate_t *fhstate = &device->fhstate;
+  openair0_timestamp prev_read_TS= fhstate->TS_read, min_TS;
+  // block until FH is ready
+  while (fhstate->r[0] == 0 || fhstate->r[1] == 0 || fhstate->r[2] == 0 || fhstate->r[3] == 0 ||
+         fhstate->r[4] == 0 || fhstate->r[5] == 0 || fhstate->r[6] == 0 || fhstate->r[7] == 0) usleep(100);
+
+  // get minimum TS over all antennas
+  min_TS = fhstate->TS[0];
+  for (int i=1;i<device->openair0_cfg->rx_num_channels;i++) min_TS = min(min_TS,fhstate->TS[i]);
+  // poll/sleep until we accumulated enough samples on each antenna port
+  while (min_TS < prev_read_TS + nsamps) {
+    usleep(100);
+    min_TS = fhstate->TS[0];
+    for (int i=1;i<device->openair0_cfg->rx_num_channels;i++) min_TS = min(min_TS,fhstate->TS[i]);
+  }
+
+/*
   //  openair0_timestamp prev_timestamp = -1;
   int rcvfrom_flag =0;
   int block_cnt=0;
@@ -411,46 +478,20 @@ int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uin
   block_cnt=0;
   AssertFatal(eth->compression == NO_COMPRESS, "IF5 compression not supported for now\n");
  
-  while(bytes_received < payload_size) {
-  again:
-//    LOG_I(PHY,"temp_rx0 %p, temp_rx[0] %p temp_rx[APP_HEADER_SIZE_BYTES>>2] %p APP_HEADER_SIZE_BYTES %ld\n",temp_rx0,&temp_rx[0],&temp_rx[APP_HEADER_SIZE_BYTES>>2],APP_HEADER_SIZE_BYTES); 
-    bytes_received +=recvfrom(eth->sockfdd,
-			      (void*)temp_rx0,
-			      payload_size,
-			      rcvfrom_flag,
-			      (struct sockaddr *)&eth->dest_addrd,
-			      (socklen_t *)&eth->addr_len); 
-    packet_cnt++;
-    if (bytes_received ==-1) {
+  bytes_received =recvfrom(eth->sockfdd[sockid%eth->num_fd],
+ 	                   (void*)temp_rx0,
+		           payload_size,
+		           rcvfrom_flag,
+		           (struct sockaddr *)&eth->dest_addrd,
+		           (socklen_t *)&eth->addr_len); 
+  if (bytes_received ==-1) {
       eth->num_rx_errors++;
-      if (errno == EAGAIN) {
-	again_cnt++;
-	usleep(10);
-	if (again_cnt == 1000) {
-	  perror("ETHERNET READ: ");
-	  exit(-1);
-	} else {
-	  bytes_received=0;
-	  goto again;
-	}	  
-      } else if (errno == EWOULDBLOCK) {
-	block_cnt++;
-	usleep(10);	  
-	if (block_cnt == 1000) {
-	  perror("ETHERNET READ: ");
-	  exit(-1);
-	} else {
-	  printf("BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK \n");
-	  goto again;
-	}
-      }
-    } else {
-      /* store the timestamp value from packet's header */
+  } else {
+      // store the timestamp value from packet's header 
       *timestamp =  *(openair0_timestamp *)(temp_rx0 + ECPRICOMMON_BYTES+ECPRIPCID_BYTES);
       // convert TS to samples, /6 for AW2S @ 30.72 Ms/s, this is converted for other sample rates in OAI application
       *timestamp = *timestamp/6;
       *cc        = *(uint16_t*)(temp_rx0 + ECPRICOMMON_BYTES);
-    }
     eth->rx_actual_nsamps=payload_size>>2;
     eth->rx_count++;
   }	 
@@ -458,8 +499,10 @@ int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uin
   if (buff) memcpy((void*)(buff[*cc]+packet_idx*nsamps),
                     (void*)(temp_rx+1),
                     nsamps<<2); 
-  
-  return (payload_size>>2);
+ */ 
+  *timestamp = fhstate->TS_read;
+  fhstate->TS_read = prev_read_TS + nsamps;
+  return (nsamps);
 }
 
 
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
index a496df74bc..ae50582187 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
@@ -64,8 +64,32 @@ int trx_eth_start(openair0_device *device)
        AssertFatal(device->thirdparty_init != NULL, "device->thirdparty_init is null\n");
        AssertFatal(device->thirdparty_init(device) == 0, "third-party init failed\n");
        device->openair0_cfg->samples_per_packet = 256;
-    }
-    /* initialize socket */
+       eth->num_fd = max(device->openair0_cfg->rx_num_channels,device->openair0_cfg->tx_num_channels); 
+       printf("Creating %d UDP threads ...\n",device->openair0_cfg->rx_num_channels);
+       udp_read_t *u[device->openair0_cfg->rx_num_channels];
+       for (int i=0;i<device->openair0_cfg->rx_num_channels;i++) {
+          u[i] = malloc(sizeof(udp_read_t));
+          u[i]->thread_id=i;
+          u[i]->device = device;
+          threadCreate(&u[i]->pthread,udp_read_thread,u[i],"udp read thread",-1,OAI_PRIORITY_RT_MAX);
+       }
+       device->sampling_rate_ratio_n=1;
+       device->sampling_rate_ratio_d=1;
+       if (device->openair0_cfg->nr_flag==1) { // This check if RRU knows about NR numerologies
+          if (device->openair0_cfg->num_rb_dl <= 162 && device->openair0_cfg->num_rb_dl > 106) device->sampling_rate_ratio_n = 2;
+          else if (device->openair0_cfg->num_rb_dl <= 106 && device->openair0_cfg->num_rb_dl > 51) {device->sampling_rate_ratio_d=3;device->sampling_rate_ratio_n=4;}
+          else if (device->openair0_cfg->num_rb_dl == 51) {device->sampling_rate_ratio_n=1;device->sampling_rate_ratio_d=1;}
+          else AssertFatal(1==0,"num_rb_dl %d not ok with ECPRI\n",device->openair0_cfg->num_rb_dl);
+       }
+       else {
+          if (device->openair0_cfg->num_rb_dl == 100) device->sampling_rate_ratio_d = 1;
+          else if (device->openair0_cfg->num_rb_dl == 75) {device->sampling_rate_ratio_d = 4; device->sampling_rate_ratio_n=3;}
+          else if (device->openair0_cfg->num_rb_dl == 50) device->sampling_rate_ratio_d = 2;
+          else if (device->openair0_cfg->num_rb_dl == 25) device->sampling_rate_ratio_d = 4;
+          else AssertFatal(1==0,"num_rb_dl %d not ok with ECPRI\n",device->openair0_cfg->num_rb_dl);
+       }
+   }
+   /* initialize socket */
     if (eth->flags == ETH_RAW_MODE) {
         printf("Setting ETHERNET to ETH_RAW_IF5_MODE\n");
         if (eth_socket_init_raw(device)!=0)   return -1;
@@ -159,12 +183,13 @@ void trx_eth_end(openair0_device *device)
 {
     eth_state_t *eth = (eth_state_t*)device->priv;
     /* destroys socket only for the processes that call the eth_end fuction-- shutdown() for beaking the pipe */
-    if ( close(eth->sockfdd) <0 ) {
-        perror("ETHERNET: Failed to close socket");
-        exit(0);
-    } else {
-        printf("[%s] socket has been successfully closed.\n",(device->host_type == RAU_HOST)? "RAU":"RRU");
-    }
+    for (int i=0;i<eth->num_fd;i++)
+      if ( close(eth->sockfdd[i]) <0 ) {
+          perror("ETHERNET: Failed to close socket");
+          exit(0);
+      } else {
+          printf("[%s] socket has been successfully closed.\n",(device->host_type == RAU_HOST)? "RAU":"RRU");
+      }
 }
 
 
@@ -224,7 +249,8 @@ int ethernet_tune(openair0_device *device,
     /****************** socket level options ************************/
     switch(option) {
     case SND_BUF_SIZE:  /* transmit socket buffer size */
-        if (setsockopt(eth->sockfdd,
+      for (int i=0;i<eth->num_fd;i++)
+        if (setsockopt(eth->sockfdd[i],
                        SOL_SOCKET,
                        SO_SNDBUF,
                        &value,sizeof(value))) {
@@ -232,10 +258,11 @@ int ethernet_tune(openair0_device *device,
         } else {
             printf("send buffer size= %d bytes\n",value);
         }
-        break;
+      break;
 
     case RCV_BUF_SIZE:   /* receive socket buffer size */
-        if (setsockopt(eth->sockfdd,
+      for (int i=0;i<eth->num_fd;i++) {
+        if (setsockopt(eth->sockfdd[i],
                        SOL_SOCKET,
                        SO_RCVBUF,
                        &value,sizeof(value))) {
@@ -243,26 +270,29 @@ int ethernet_tune(openair0_device *device,
         } else {
             printf("receive bufffer size= %d bytes\n",value);
         }
-        break;
+      }
+      break;
 
     case RCV_TIMEOUT:
         timeout.tv_sec = value/1000000;
         timeout.tv_usec = value%1000000;//less than rt_period?
         if (setsockopt(eth->sockfdc,
-                       SOL_SOCKET,
-                       SO_RCVTIMEO,
-                       (char *)&timeout,sizeof(timeout))) {
-            perror("[ETHERNET] setsockopt()");
+                         SOL_SOCKET,
+                         SO_RCVTIMEO,
+                         (char *)&timeout,sizeof(timeout))) {
+              perror("[ETHERNET] setsockopt()");
         } else {
-            printf( "receive timeout= %u usec\n",(unsigned int)timeout.tv_usec);
+              printf( "receive timeout= %u usec\n",(unsigned int)timeout.tv_usec);
         }
-        if (setsockopt(eth->sockfdd,
-                       SOL_SOCKET,
-                       SO_RCVTIMEO,
-                       (char *)&timeout,sizeof(timeout))) {
-            perror("[ETHERNET] setsockopt()");
-        } else {
-            printf( "receive timeout= %u usec\n",(unsigned int)timeout.tv_usec);
+        for (int i=0;i<eth->num_fd;i++) {
+          if (setsockopt(eth->sockfdd[i],
+                         SOL_SOCKET,
+                         SO_RCVTIMEO,
+                         (char *)&timeout,sizeof(timeout))) {
+              perror("[ETHERNET] setsockopt()");
+          } else {
+              printf( "receive timeout= %u usec\n",(unsigned int)timeout.tv_usec);
+          }
         }
         break;
 
@@ -277,13 +307,15 @@ int ethernet_tune(openair0_device *device,
         } else {
             printf( "send timeout= %d,%d sec\n",(int)timeout.tv_sec,(int)timeout.tv_usec);
         }
-        if (setsockopt(eth->sockfdd,
-                       SOL_SOCKET,
-                       SO_SNDTIMEO,
-                       (char *)&timeout,sizeof(timeout))) {
-            perror("[ETHERNET] setsockopt()");
-        } else {
-            printf( "send timeout= %d,%d sec\n",(int)timeout.tv_sec,(int)timeout.tv_usec);
+        for (int i=0;i<eth->num_fd;i++) {
+          if (setsockopt(eth->sockfdd[i],
+                         SOL_SOCKET,
+                         SO_SNDTIMEO,
+                         (char *)&timeout,sizeof(timeout))) {
+              perror("[ETHERNET] setsockopt()");
+          } else {
+              printf( "send timeout= %d,%d sec\n",(int)timeout.tv_sec,(int)timeout.tv_usec);
+          }
         }
         break;
 
@@ -293,20 +325,24 @@ int ethernet_tune(openair0_device *device,
         ifr.ifr_addr.sa_family = AF_INET;
         strncpy(ifr.ifr_name,eth->if_name, sizeof(ifr.ifr_name)-1);
         ifr.ifr_mtu =value;
-        if (ioctl(eth->sockfdd,SIOCSIFMTU,(caddr_t)&ifr) < 0 )
-            perror ("[ETHERNET] Can't set the MTU");
-        else
-            printf("[ETHERNET] %s MTU size has changed to %d\n",eth->if_name,ifr.ifr_mtu);
+        for (int i=0;i<eth->num_fd;i++) {
+          if (ioctl(eth->sockfdd[i],SIOCSIFMTU,(caddr_t)&ifr) < 0 )
+              perror ("[ETHERNET] Can't set the MTU");
+          else
+              printf("[ETHERNET] %s MTU size has changed to %d\n",eth->if_name,ifr.ifr_mtu);
+        }
         break;
 
     case TX_Q_LEN:  /* change TX queue length of eth interface */
         ifr.ifr_addr.sa_family = AF_INET;
         strncpy(ifr.ifr_name,eth->if_name, sizeof(ifr.ifr_name)-1);
         ifr.ifr_qlen =value;
-        if (ioctl(eth->sockfdd,SIOCSIFTXQLEN,(caddr_t)&ifr) < 0 )
-            perror ("[ETHERNET] Can't set the txqueuelen");
-        else
-            printf("[ETHERNET] %s txqueuelen size has changed to %d\n",eth->if_name,ifr.ifr_qlen);
+        for (int i=0;i<eth->num_fd;i++) {
+          if (ioctl(eth->sockfdd[i],SIOCSIFTXQLEN,(caddr_t)&ifr) < 0 )
+              perror ("[ETHERNET] Can't set the txqueuelen");
+          else
+              printf("[ETHERNET] %s txqueuelen size has changed to %d\n",eth->if_name,ifr.ifr_qlen);
+        }
         break;
 
     /******************* device level options  *************************/
@@ -413,7 +449,10 @@ int transport_init(openair0_device *device,
         eth->compression = ALAW_COMPRESS;
     }
 
+    eth->num_fd = max(openair0_cfg->rx_num_channels,openair0_cfg->tx_num_channels);
+
     printf("[ETHERNET]: Initializing openair0_device for %s ...\n", ((device->host_type == RAU_HOST) ? "RAU": "RRU"));
+    printf("[ETHERNET]: num_fd %d\n",eth->num_fd);
     device->Mod_id           = 0;//num_devices_eth++;
     device->transp_type      = ETHERNET_TP;
     device->trx_start_func   = trx_eth_start;
@@ -438,6 +477,7 @@ int transport_init(openair0_device *device,
         device->trx_read_func2    = trx_eth_read_udp;
         device->trx_ctlsend_func = trx_eth_ctlsend_udp;
         device->trx_ctlrecv_func = trx_eth_ctlrecv_udp;
+        memset((void*)&device->fhstate,0,sizeof(device->fhstate));
     } else if (eth->flags == ETH_RAW_IF4p5_MODE) {
         device->trx_write_func   = trx_eth_write_raw_IF4p5;
         device->trx_read_func    = trx_eth_read_raw_IF4p5;
@@ -454,6 +494,7 @@ int transport_init(openair0_device *device,
     eth->if_name = eth_params->local_if_name;
     device->priv = eth;
 
+    
     /* device specific */
     //  openair0_cfg[0].iq_rxrescale = 15;//rescale iqs
     //  openair0_cfg[0].iq_txshift = eth_params->iq_txshift;// shift
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
index 05d5b37121..518cf8cfdc 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
@@ -59,12 +59,16 @@ typedef struct {
   
   /*!\brief socket file desc (control)*/ 
   int sockfdc;
+  /*!\brief number of sockets for user-plane*/
+  int num_fd;
   /*!\brief socket file desc (user)*/ 
-  int sockfdd;
+  int sockfdd[8];
   /*!\brief interface name */ 
   char *if_name;
   /*!\brief buffer size */ 
   unsigned int buffer_size;
+  /*!\brief Fronthaul state */
+  fhstate_t *fhstate;
   /*!\brief destination address (control) for UDP socket*/
   struct sockaddr_in dest_addrc;
   /*!\brief local address (control) for UDP socket*/
@@ -214,7 +218,7 @@ void inline dump_txcounters(openair0_device *device);
 */
 void dump_iqs(char * buff, int iq_cnt);
 
-
+void *udp_read_thread(void *arg);
 
 /*! \fn int ethernet_tune (openair0_device *device, unsigned int option, int value);
 * \brief this function allows you to configure certain ethernet parameters in socket or device level
@@ -238,7 +242,7 @@ int ethernet_tune(openair0_device *device, unsigned int option, int value);
 */
 int eth_socket_init_udp(openair0_device *device);
 int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, void *buff, int nsamps,int cc, int flags);
-int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uint32_t **buff, int nsamps, int packet_idx,int *cc);
+int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uint32_t **buff, int nsamps);
 
 
 int eth_socket_init_raw(openair0_device *device);

From 05cdd1b4da2aa8ceb50025bcdeda4e8217dc2ba2 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Sat, 9 Apr 2022 15:56:30 +0200
Subject: [PATCH 04/28] temporary commit

---
 targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
index ae50582187..f50e9abde6 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
@@ -82,7 +82,7 @@ int trx_eth_start(openair0_device *device)
           else AssertFatal(1==0,"num_rb_dl %d not ok with ECPRI\n",device->openair0_cfg->num_rb_dl);
        }
        else {
-          if (device->openair0_cfg->num_rb_dl == 100) device->sampling_rate_ratio_d = 1;
+          if (device->openair0_cfg->num_rb_dl == 100 || device->openair0_cfg->num_rb_dl == 51) device->sampling_rate_ratio_d = 1;
           else if (device->openair0_cfg->num_rb_dl == 75) {device->sampling_rate_ratio_d = 4; device->sampling_rate_ratio_n=3;}
           else if (device->openair0_cfg->num_rb_dl == 50) device->sampling_rate_ratio_d = 2;
           else if (device->openair0_cfg->num_rb_dl == 25) device->sampling_rate_ratio_d = 4;

From fc0396f9f4a023db66a431b82a85ebcf6aee178c Mon Sep 17 00:00:00 2001
From: Raymond Knopp <Raymond Knopp>
Date: Sun, 1 May 2022 13:10:04 +0200
Subject: [PATCH 05/28] 2x2 20 and 50 MHz tested with AW2S Jaguar with new FW
 and NR configurations

---
 executables/nr-ru.c                           | 22 +++++------
 openair1/PHY/LTE_TRANSPORT/if5_tools.c        | 11 +-----
 targets/ARCH/COMMON/common_lib.h              |  7 +++-
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c | 35 ++++++++++++-----
 .../ETHERNET/USERSPACE/LIB/ethernet_lib.c     | 39 +++++++++++++++----
 5 files changed, 75 insertions(+), 39 deletions(-)

diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index 48c57434bd..10c7b32142 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -296,22 +296,19 @@ void fh_if4p5_south_out(RU_t *ru, int frame, int slot, uint64_t timestamp) {
 
 // Synchronous if5 from south
 
-uint64_t ts_rx[20];
 void fh_if5_south_in(RU_t *ru,
                      int *frame,
                      int *tti) {
   NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
   RU_proc_t *proc = &ru->proc;
-  nfapi_nr_config_request_scf_t *cfg = &ru->config;
-  int is_rx=1;
-  int slot_type = nr_slot_select(cfg,*frame,*tti);
-  if (slot_type == NR_DOWNLINK_SLOT) is_rx=0;
+  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_RECV_IF5, 1 );   
+  start_meas(&ru->rx_fhaul);
+
   ru->ifdevice.trx_read_func2(&ru->ifdevice,&proc->timestamp_rx,NULL,fp->get_samples_per_slot(*tti,fp)); 
   if (proc->first_rx == 1) ru->ts_offset = proc->timestamp_rx;
   proc->frame_rx    = ((proc->timestamp_rx-ru->ts_offset) / (fp->samples_per_subframe*10))&1023;
   proc->tti_rx = fp->get_slot_from_timestamp(proc->timestamp_rx-ru->ts_offset,fp);
-//(idx_sf * fp->slots_per_subframe + (int)round((float)(proc->timestamp_rx % fp->samples_per_subframe) / fp->samples_per_slot0))%(fp->slots_per_frame);
-  ts_rx[*tti] = proc->timestamp_rx;
+
   LOG_D(PHY,"IF5 %d.%d => RX %d.%d first_rx %d\n",*frame,*tti,proc->frame_rx,proc->tti_rx,proc->first_rx); 
 
   if (proc->first_rx == 0) {
@@ -330,7 +327,10 @@ void fh_if5_south_in(RU_t *ru,
     *tti = proc->tti_rx;
   }
 
+  stop_meas(&ru->rx_fhaul);
   VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, proc->timestamp_rx&0xffffffff );
+  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_RECV_IF5, 0 );
+
 }
 
 // Synchronous if4p5 from south
@@ -1313,7 +1313,7 @@ void *ru_thread( void *param ) {
       else LOG_I(PHY,"RU %d rf device ready\n",ru->idx);
     } else LOG_I(PHY,"RU %d no rf device\n",ru->idx);
 
-    LOG_I(PHY,"RU %d RF started\n",ru->idx);
+    LOG_I(PHY,"RU %d RF started opp_enabled %d\n",ru->idx,opp_enabled);
     // start trx write thread
     if(usrp_tx_thread == 1) {
       if (ru->start_write_thread) {
@@ -1363,12 +1363,11 @@ void *ru_thread( void *param ) {
     }
 
     // synchronization on input FH interface, acquire signals/data and block
-    LOG_I(PHY,"[RU_thread] read data: frame_rx = %d, tti_rx = %d\n", frame, slot);
+    LOG_D(PHY,"[RU_thread] read data: frame_rx = %d, tti_rx = %d\n", frame, slot);
 
     if (ru->fh_south_in) ru->fh_south_in(ru,&frame,&slot);
     else AssertFatal(1==0, "No fronthaul interface at south port");
 
-    continue;
 
     if (initial_wait == 1 && proc->frame_rx < 300 && ru->fh_south_in == rx_rf) {
        if (proc->frame_rx>0 && ((proc->frame_rx % 100) == 0) && proc->tti_rx==0) {
@@ -1537,7 +1536,8 @@ void init_RU_proc(RU_t *ru) {
 
   if(emulate_rf)
     threadCreate( &proc->pthread_emulateRF, emulatedRF_thread, (void *)proc, "emulateRF", -1, OAI_PRIORITY_RT );
-
+  if (opp_enabled == 1) 
+    threadCreate( &ru->ru_stats_thread, ru_stats_thread, (void *)ru,"ru_stats", -1, OAI_PRIORITY_RT );
   if (get_thread_worker_conf() == WORKER_ENABLE) {
     if (ru->feprx) nr_init_feprx_thread(ru);
 
diff --git a/openair1/PHY/LTE_TRANSPORT/if5_tools.c b/openair1/PHY/LTE_TRANSPORT/if5_tools.c
index 5f6376c51b..8eb7934f99 100644
--- a/openair1/PHY/LTE_TRANSPORT/if5_tools.c
+++ b/openair1/PHY/LTE_TRANSPORT/if5_tools.c
@@ -1116,15 +1116,6 @@ void send_IF5(RU_t *ru, openair0_timestamp proc_timestamp, int tti, uint8_t *seq
          siglen = spsf;
       }
 
-      if (ru->openair0_cfg.nr_flag==1) {
-         if (nrfp->N_RB_DL <= 162 && nrfp->N_RB_DL > 106)      {factor_n=1; factor_d=2;}  // 61.44 Ms/s
-         else if (nrfp->N_RB_DL <= 106 && nrfp->N_RB_DL > 51 ) {factor_n=3; factor_d=4;} // 46.08 Ms/s
-         else if (nrfp->N_RB_DL == 51 )  {factor_n=1; factor_d=1;} // 30.72 Ms/s
-         else AssertFatal(1==0,"N_RB_DL %d not supported yet\n",nrfp->N_RB_DL); 
-      }
-      else {
-         factor_n = 30720/spsf;
-      }
       for (i=0; i < ru->nb_tx; i++)
         txp[i] = (int32_t*)&ru->common.txdata[i][offset];
     
@@ -1134,7 +1125,7 @@ void send_IF5(RU_t *ru, openair0_timestamp proc_timestamp, int tti, uint8_t *seq
           //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF0, 1 );
           clock_gettime( CLOCK_MONOTONIC, &start_comp);
           ru->ifdevice.trx_write_func2(&ru->ifdevice,
-	  			       ((proc_timestamp + packet_id*spp_eth-600)*factor_n)/factor_d,
+	  			       (proc_timestamp + packet_id*spp_eth/*-1250*/),
 				       (void*)txp[aid],
 				       spp_eth,
 				       aid,
diff --git a/targets/ARCH/COMMON/common_lib.h b/targets/ARCH/COMMON/common_lib.h
index dc31c00221..e67655125e 100644
--- a/targets/ARCH/COMMON/common_lib.h
+++ b/targets/ARCH/COMMON/common_lib.h
@@ -366,12 +366,15 @@ struct openair0_device_t {
   /*!brief pointer to FH state, used in ECPRI split 8*/
   fhstate_t fhstate;
 
-  /*!bried Used in ECPRI split 8 to indicate numerator of sampling rate ratio*/
+  /*!brief Used in ECPRI split 8 to indicate numerator of sampling rate ratio*/
   int sampling_rate_ratio_n;
 
-  /*!bried Used in ECPRI split 8 to indicate denominator of sampling rate ratio*/
+  /*!brief Used in ECPRI split 8 to indicate denominator of sampling rate ratio*/
   int sampling_rate_ratio_d;
 
+  /*!brief Used in ECPRI split 8 to indicate the TX/RX timing offset*/
+  int txrx_offset;
+
   /* Functions API, which are called by the application*/
 
   /*! \brief Called to start the transceiver. Return 0 if OK, < 0 if error
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index a39d27d55a..c50305a760 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -37,6 +37,7 @@
 #include <stdlib.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>
+#include <linux/filter.h>
 #include <net/if.h>
 #include <netinet/ether.h>
 #include <unistd.h>
@@ -151,6 +152,22 @@ int eth_socket_init_udp(openair0_device *device) {
       printf("ETHERNET: Cannot set SO_REUSEPORT option on socket (user %d)",i);
       exit(0);
     }
+#ifdef SO_ATTACH_REUSEPORT_EBPF    
+    struct sock_filter code[]={
+   		{ BPF_LD  | BPF_W | BPF_ABS, 0, 0, SKF_AD_OFF + SKF_AD_CPU },
+		/* return A */
+		{ BPF_RET | BPF_A, 0, 0, 0 },
+    };
+    struct sock_fprog bpf = {
+      .len = sizeof(code)/sizeof(struct sock_filter),
+      .filter = code,
+    };
+    if (i==0 && setsockopt(eth->sockfdd[i], SOL_SOCKET, SO_ATTACH_REUSEPORT_CBPF, &bpf, sizeof(bpf))) {
+      printf("ETHERNET: Cannot set SO_ATTACH_REUSEPORT_EBPF option on socket (user %d)",i);
+      exit(0);
+    }
+#endif
+
   }
   
   /* want to receive -> so bind */   
@@ -277,6 +294,7 @@ int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, voi
   int bytes_sent=0;
   eth_state_t *eth = (eth_state_t*)device->priv;
   int sendto_flag =0;
+  fhstate_t *fhstate = &device->fhstate;
 
   //sendto_flag|=flags;
   eth->tx_nsamps=nsamps;
@@ -321,8 +339,9 @@ int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, voi
         /* buff[i] points to the position in tx buffer where the payload to be sent is
        buff2 points to the position in tx buffer where the packet header will be placed */
     void *buff2 = ((void*)buff_tx2)- APP_HEADER_SIZE_BYTES; 
-    
-   
+    openair0_timestamp TS = timestamp + fhstate->TS0;
+    TS = 6*device->sampling_rate_ratio_d*(TS/device->sampling_rate_ratio_n);
+    TS -= device->txrx_offset; 
  
     bytes_sent = 0;
     
@@ -338,7 +357,7 @@ int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, voi
     // ECPRI PC_ID (2 bytes)
     *(uint16_t *)(buff2 + 4) = cc;
     // OAI modified SEQ_ID (4 bytes)
-    *(uint64_t *)(buff2 + 6) = ((uint64_t )timestamp)*6;
+    *(uint64_t *)(buff2 + 6) = TS;
 
     /*
     printf("ECPRI TX (REV %x, MessType %d, Payload size %d, PC_ID %d, TS %llu\n",
@@ -408,7 +427,7 @@ void *udp_read_thread(void *arg) {
   char buffer[UDP_PACKET_SIZE_BYTES(256)];
 
   while (oai_exit == 0) {
-    printf("UDP read thread %d, waiting for start\n",u->thread_id);
+    LOG_I(PHY,"UDP read thread %d, waiting for start sampling_rate_d %d, sampling_rate_n %d\n",u->thread_id,device->sampling_rate_ratio_n,device->sampling_rate_ratio_d);
     while (fhstate->active > 0) {
       size_t count = recvfrom(((eth_state_t*)device->priv)->sockfdd[u->thread_id],
                               buffer,sizeof(buffer),0,
@@ -417,9 +436,8 @@ void *udp_read_thread(void *arg) {
       aid = *(uint16_t*)(&buffer[ECPRICOMMON_BYTES]);
       TS  = *(openair0_timestamp *)(&buffer[ECPRICOMMON_BYTES+ECPRIPCID_BYTES]);   
       // convert TS to samples, /6 for AW2S @ 30.72 Ms/s, this is converted for other sample rates in OAI application
-      TS = device->sampling_rate_ratio_n*(TS/device->sampling_rate_ratio_d/6);
-      printf("udp_thread_id %d count %d, aid %d, TS %llu\n",u->thread_id,count,aid,(unsigned long long)TS);
-      if (count <= 0) { printf("problem in recvfrom\n"); exit(-1); }
+      TS = device->sampling_rate_ratio_n*(TS/(device->sampling_rate_ratio_d*6));
+      if ((int)count <= 0)  continue;
       AssertFatal(aid < 8,"Cannot handle more than 8 antennas, got aid %d\n",aid);
       fhstate->r[aid]=1;
       if (aid==0 && fhstate->TS[0] == 0) fhstate->TS0 = TS;
@@ -428,7 +446,6 @@ void *udp_read_thread(void *arg) {
       int64_t offset =  TS - fhstate->TS0;
       if (offset > 0) offset = offset % device->openair0_cfg->rxsize;
       else offset = TS % device->openair0_cfg->rxsize + ((((uint64_t)1)<<63)-(fhstate->TS0-1)) % device->openair0_cfg->rxsize;   
-      printf("udp_thread_id %d aid %d, TS %llu, TS0 %llu, offset %d, size %d\n",u->thread_id,aid,(unsigned long long)TS,fhstate->TS0,offset,device->openair0_cfg->rxsize);
       // need to do memcpy since there is no guarantee that aid is the same each time, otherwise we could have used
       // zero-copy and corrected the header component.   	 
       memcpy((void*)(device->openair0_cfg->rxbase[aid]+offset),
@@ -453,7 +470,7 @@ int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uin
   min_TS = fhstate->TS[0];
   for (int i=1;i<device->openair0_cfg->rx_num_channels;i++) min_TS = min(min_TS,fhstate->TS[i]);
   // poll/sleep until we accumulated enough samples on each antenna port
-  while (min_TS < prev_read_TS + nsamps) {
+  while (min_TS < fhstate->TS0+prev_read_TS + nsamps) {
     usleep(100);
     min_TS = fhstate->TS[0];
     for (int i=1;i<device->openair0_cfg->rx_num_channels;i++) min_TS = min(min_TS,fhstate->TS[i]);
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
index f50e9abde6..b5a21c5d16 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
@@ -76,16 +76,40 @@ int trx_eth_start(openair0_device *device)
        device->sampling_rate_ratio_n=1;
        device->sampling_rate_ratio_d=1;
        if (device->openair0_cfg->nr_flag==1) { // This check if RRU knows about NR numerologies
-          if (device->openair0_cfg->num_rb_dl <= 162 && device->openair0_cfg->num_rb_dl > 106) device->sampling_rate_ratio_n = 2;
-          else if (device->openair0_cfg->num_rb_dl <= 106 && device->openair0_cfg->num_rb_dl > 51) {device->sampling_rate_ratio_d=3;device->sampling_rate_ratio_n=4;}
-          else if (device->openair0_cfg->num_rb_dl == 51) {device->sampling_rate_ratio_n=1;device->sampling_rate_ratio_d=1;}
+          if (device->openair0_cfg->num_rb_dl <= 162 && device->openair0_cfg->num_rb_dl > 106) {
+             device->sampling_rate_ratio_n = 2;
+	     device->txrx_offset=5500;
+	  }
+          else if (device->openair0_cfg->num_rb_dl <= 106 && device->openair0_cfg->num_rb_dl > 51) {
+             device->sampling_rate_ratio_d=3;
+	     device->sampling_rate_ratio_n=4;
+	     device->txrx_offset=3750;
+	  }
+          else if (device->openair0_cfg->num_rb_dl == 51) {
+             device->sampling_rate_ratio_n=1;
+	     device->sampling_rate_ratio_d=1;
+	     device->txrx_offset=7500;
+	  }
           else AssertFatal(1==0,"num_rb_dl %d not ok with ECPRI\n",device->openair0_cfg->num_rb_dl);
        }
        else {
-          if (device->openair0_cfg->num_rb_dl == 100 || device->openair0_cfg->num_rb_dl == 51) device->sampling_rate_ratio_d = 1;
-          else if (device->openair0_cfg->num_rb_dl == 75) {device->sampling_rate_ratio_d = 4; device->sampling_rate_ratio_n=3;}
-          else if (device->openair0_cfg->num_rb_dl == 50) device->sampling_rate_ratio_d = 2;
-          else if (device->openair0_cfg->num_rb_dl == 25) device->sampling_rate_ratio_d = 4;
+          if (device->openair0_cfg->num_rb_dl == 100 || device->openair0_cfg->num_rb_dl == 51) {
+             device->sampling_rate_ratio_d = 1;
+	     device->txrx_offset=7500;
+	  }
+          else if (device->openair0_cfg->num_rb_dl == 75) {
+             device->sampling_rate_ratio_d = 4; 
+	     device->sampling_rate_ratio_n=3;
+	     device->txrx_offset=7500;
+	  }
+          else if (device->openair0_cfg->num_rb_dl == 50) {
+             device->sampling_rate_ratio_d = 2;
+	     device->txrx_offset=7500;
+	  }
+          else if (device->openair0_cfg->num_rb_dl == 25) {
+             device->sampling_rate_ratio_d = 4;
+	     device->txrx_offset=7500;
+	  }
           else AssertFatal(1==0,"num_rb_dl %d not ok with ECPRI\n",device->openair0_cfg->num_rb_dl);
        }
    }
@@ -478,6 +502,7 @@ int transport_init(openair0_device *device,
         device->trx_ctlsend_func = trx_eth_ctlsend_udp;
         device->trx_ctlrecv_func = trx_eth_ctlrecv_udp;
         memset((void*)&device->fhstate,0,sizeof(device->fhstate));
+	for (int i=openair0_cfg->rx_num_channels;i<8;i++) device->fhstate.r[i] = 1;
     } else if (eth->flags == ETH_RAW_IF4p5_MODE) {
         device->trx_write_func   = trx_eth_write_raw_IF4p5;
         device->trx_read_func    = trx_eth_read_raw_IF4p5;

From 0f207da28a582be26d873c462be9d4db6f77d6ff Mon Sep 17 00:00:00 2001
From: Raymond Knopp <Raymond Knopp>
Date: Sun, 8 May 2022 18:36:42 +0200
Subject: [PATCH 06/28] initial changes for multi-threaded TX for IF5

---
 executables/nr-ru.c                           |  33 +++---
 openair1/PHY/defs_RU.h                        |   2 +
 openair1/SCHED_NR/nr_ru_procedures.c          |  25 ++++-
 .../LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c   |  17 +--
 targets/ARCH/COMMON/common_lib.h              |   2 +-
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c | 100 +++++++++---------
 .../ETHERNET/USERSPACE/LIB/ethernet_lib.h     |   2 +-
 7 files changed, 92 insertions(+), 89 deletions(-)

diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index d14b3f1a88..662cbdb9e1 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -275,15 +275,15 @@ int connect_rau(RU_t *ru) {
 // southbound IF5 fronthaul for 16-bit OAI format
 void fh_if5_south_out(RU_t *ru, int frame, int slot, uint64_t timestamp) {
   if (ru == RC.ru[0]) VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TST, ru->proc.timestamp_tx&0xffffffff );
-  void *buffs[ru->nb_tx];
   int offset = ru->nr_frame_parms->get_samples_slot_timestamp(slot,ru->nr_frame_parms,0);
-  for (int aid=0;aid<ru->nb_tx;aid++) buffs[aid]=&ru->common.txdata[aid][offset]; 
   start_meas(&ru->tx_fhaul);
-  ru->ifdevice.trx_write_func2(&ru->ifdevice,
-		               timestamp,
-			       buffs,
-			       ru->nr_frame_parms->get_samples_per_slot(slot,ru->nr_frame_parms),
-			       0); 
+  for (int aid=0;aid<ru->nb_tx;aid++)  
+    ru->ifdevice.trx_write_func2(&ru->ifdevice,
+    		                 timestamp,
+			         (void*)&ru->common.txdata[aid][offset],
+				 aid,
+			         ru->nr_frame_parms->get_samples_per_slot(slot,ru->nr_frame_parms),
+			         0); 
   stop_meas(&ru->tx_fhaul);
 
 }
@@ -488,7 +488,7 @@ void fh_if5_north_asynch_in(RU_t *ru,int *frame,int *slot) {
   RU_proc_t *proc        = &ru->proc;
   int tti_tx,frame_tx;
   openair0_timestamp timestamp_tx;
-  recv_IF5(ru, &timestamp_tx, *slot, IF5_RRH_GW_DL,1);
+  AssertFatal(1==0,"Shouldn't get here\n");
   //      printf("Received subframe %d (TS %llu) from RCC\n",tti_tx,timestamp_tx);
   frame_tx    = (timestamp_tx / (fp->samples_per_subframe*10))&1023;
   uint32_t idx_sf = timestamp_tx / fp->samples_per_subframe;
@@ -565,11 +565,9 @@ void fh_if4p5_north_asynch_in(RU_t *ru,int *frame,int *slot) {
 }
 
 void fh_if5_north_out(RU_t *ru) {
-  RU_proc_t *proc=&ru->proc;
-  uint8_t seqno=0;
   /// **** send_IF5 of rxdata to BBU **** ///
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF5, 1 );
-  send_IF5(ru, proc->timestamp_rx, proc->tti_rx, &seqno, IF5_RRH_GW_UL);
+  AssertFatal(1==0,"Shouldn't get here\n");
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF5, 0 );
 }
 
@@ -1181,9 +1179,15 @@ void *ru_stats_thread(void *param) {
         print_meas(&ru->precoding_stats,"feptx_prec",NULL,NULL);
         print_meas(&ru->txdataF_copy_stats,"txdataF_copy",NULL,NULL);
         print_meas(&ru->ofdm_mod_stats,"feptx_ofdm",NULL,NULL);
-        print_meas(&ru->ofdm_total_stats,"feptx_total",NULL,NULL);
+        if (ru->txfh_in_fep) {
+          print_meas(&ru->ofdm_mod_stats,"feptx_ofdm (with txfh)",NULL,NULL);
+	  print_meas(&ru->ofdm_total_stats,"feptx_total (with txfh)",NULL,NULL);
+	} 
+        else {
+          print_meas(&ru->ofdm_mod_stats,"feptx_ofdm",NULL,NULL);
+          print_meas(&ru->ofdm_total_stats,"feptx_total",NULL,NULL);
+  	}
       }
-
       print_meas(&ru->rx_fhaul,"rx_fhaul",NULL,NULL);
       print_meas(&ru->tx_fhaul,"tx_fhaul",NULL,NULL);
 
@@ -1851,11 +1855,12 @@ void set_function_spec_param(RU_t *ru) {
 
     case REMOTE_IF5: // the remote unit is IF5 RRU
       ru->do_prach               = 0;
+//      ru->txfh_in_fep            = 1;
       ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_full_2thread   : nr_fep_full;     // this is frequency-shift + DFTs
       ru->feptx_prec             = (get_thread_worker_conf() == WORKER_ENABLE) ? NULL                  : nr_feptx_prec;          // need to do transmit Precoding + IDFTs
       ru->feptx_ofdm             = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_ofdm_2thread : nr_feptx_ofdm; // need to do transmit Precoding + IDFTs
       ru->fh_south_in            = fh_if5_south_in;     // synchronous IF5 reception
-      ru->fh_south_out           = fh_if5_south_out;    // synchronous IF5 transmission
+      ru->fh_south_out           = (ru->txfh_in_fep) ? NULL : fh_if5_south_out;    // synchronous IF5 transmission
       ru->fh_south_asynch_in     = NULL;                // no asynchronous UL
       ru->start_rf               = ru->eth_params.transp_preference == ETH_UDP_IF5_ECPRI_MODE ? start_streaming : NULL;
       ru->stop_rf                = NULL;
diff --git a/openair1/PHY/defs_RU.h b/openair1/PHY/defs_RU.h
index 0320697ecf..6078e2f857 100644
--- a/openair1/PHY/defs_RU.h
+++ b/openair1/PHY/defs_RU.h
@@ -507,6 +507,8 @@ typedef struct RU_t_s {
   int sf_ahead;
   /// TX processing advance in slots (for NR)
   int sl_ahead;
+  /// flag to indicated TX FH is embedded in TX FEP
+  int txfh_in_fep;
   /// FAPI confiuration
   nfapi_nr_config_request_scf_t  config;
   /// Frame parameters
diff --git a/openair1/SCHED_NR/nr_ru_procedures.c b/openair1/SCHED_NR/nr_ru_procedures.c
index b90f14a129..ffe847b6ce 100644
--- a/openair1/SCHED_NR/nr_ru_procedures.c
+++ b/openair1/SCHED_NR/nr_ru_procedures.c
@@ -56,7 +56,7 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
 
   NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
 
-  unsigned int slot_offset,slot_offsetF;
+  unsigned int slot_offset,slot_offsetF,initial_slot_offset,num_samples;;
   int slot = tti_tx;
 
 
@@ -71,17 +71,19 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
     slot_offset += (idx_sym%(0x7<<fp->numerology_index)) ? fp->nb_prefix_samples : fp->nb_prefix_samples0;
 
   slot_offset += fp->ofdm_symbol_size*first_symbol;
+  initial_slot_offset = slot_offset;
 
   LOG_D(PHY,"SFN/SF:RU:TX:%d/%d Generating slot %d (first_symbol %d num_symbols %d)\n",ru->proc.frame_tx, ru->proc.tti_tx,slot,first_symbol,num_symbols);
   
-  if (fp->Ncp == 1)
+  if (fp->Ncp == 1) {
     PHY_ofdm_mod(&ru->common.txdataF_BF[aa][slot_offsetF],
                  (int*)&ru->common.txdata[aa][slot_offset],
                  fp->ofdm_symbol_size,
                  num_symbols,
                  fp->nb_prefix_samples,
                  CYCLIC_PREFIX);
-  else {
+    num_samples=num_symbols*(fp->nb_prefix_samples+fp->ofdm_symbol_size);
+  } else {
     if (fp->numerology_index != 0) {
       
       if (!(slot%(fp->slots_per_subframe/2))&&(first_symbol==0)) { // case where first symbol in slot has longer prefix
@@ -98,6 +100,8 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
                      num_symbols-1,
                      fp->nb_prefix_samples,
                      CYCLIC_PREFIX);
+        num_samples=(num_symbols-1)*(fp->nb_prefix_samples+fp->ofdm_symbol_size)+
+		    fp->nb_prefix_samples0+fp->ofdm_symbol_size;
       }
       else { // all symbols in slot have shorter prefix
         PHY_ofdm_mod(&ru->common.txdataF_BF[aa][slot_offsetF],
@@ -106,6 +110,7 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
                      num_symbols,
                      fp->nb_prefix_samples,
                      CYCLIC_PREFIX);
+        num_samples=num_symbols*(fp->nb_prefix_samples+fp->ofdm_symbol_size);
       }
     } // numerology_index!=0
     else { //numerology_index == 0
@@ -130,10 +135,20 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
           slot_offset += fp->nb_prefix_samples0+fp->ofdm_symbol_size;
           slot_offsetF += fp->ofdm_symbol_size;
         }
-      }
-    }
+      } // for(idx_symbol..
+      num_samples=slot_offset-initial_slot_offset;
+    } //  numerology 0
   }
 
+  if (ru->txfh_in_fep) {
+     ru->ifdevice.trx_write_func2(&ru->ifdevice,
+                                  ru->proc.timestamp_tx,
+                                  (void*)&ru->common.txdata[aa][initial_slot_offset],
+                                  aa,
+                                  num_samples,
+                                  0);
+
+  }   
         
   //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM+(first_symbol!=0?1:0), 0);
 }
diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c
index c751b33ac0..1c0c23bb0d 100644
--- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c
+++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c
@@ -608,25 +608,10 @@ bool allocate_dl_retransmission(module_id_t module_id,
     /* the retransmission will use a different time domain allocation, check
      * that we have enough resources */
     NR_pdsch_semi_static_t temp_ps = *ps;
-<<<<<<< HEAD
+    const uint16_t slbitmap = SL_to_bitmap(ps->startSymbolIndex, ps->nrOfSymbols);
     nr_set_pdsch_semi_static(sib1,scc, cg, sched_ctrl->active_bwp, bwpd,tda, ps->nrOfLayers, sched_ctrl, &temp_ps);
     while (rbStart < bwpSize &&
            !(rballoc_mask[rbStart]&SL_to_bitmap(temp_ps.startSymbolIndex, temp_ps.nrOfSymbols)))
-=======
-
-    nr_set_pdsch_semi_static(sib1,
-                             scc,
-                             cg,
-                             sched_ctrl->active_bwp,
-                             bwpd,
-                             tda,
-                             ps->nrOfLayers,
-                             sched_ctrl,
-                             &temp_ps);
-
-    const uint16_t slbitmap = SL_to_bitmap(temp_ps.startSymbolIndex, temp_ps.nrOfSymbols);
-    while (rbStart < bwpSize && (rballoc_mask[rbStart] & slbitmap) != slbitmap)
->>>>>>> origin/develop
       rbStart++;
 
     while (rbStart + rbSize < bwpSize && (rballoc_mask[rbStart + rbSize] & slbitmap) == slbitmap)
diff --git a/targets/ARCH/COMMON/common_lib.h b/targets/ARCH/COMMON/common_lib.h
index e30a78ef75..f3dcc35e53 100644
--- a/targets/ARCH/COMMON/common_lib.h
+++ b/targets/ARCH/COMMON/common_lib.h
@@ -423,7 +423,7 @@ struct openair0_device_t {
       @param antenna_id index of the antenna if the device has multiple anteannas
       @param flags flags must be set to TRUE if timestamp parameter needs to be applied
   */
-  int (*trx_write_func2)(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int flags);
+  int (*trx_write_func2)(openair0_device *device, openair0_timestamp timestamp, void *buff, int aid, int nsamps, int flags);
 
   /*! \brief Receive samples from hardware.
    * Read \ref nsamps samples from each channel to buffers. buff[0] is the array for
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index dcb23b5970..f043b6ded4 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -289,101 +289,98 @@ int trx_eth_write_udp_IF4p5(openair0_device *device, openair0_timestamp timestam
   return (bytes_sent);  	  
 }
 
-int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int flags) {	
+int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, void *buff, int aid, int nsamps, int flags) {	
   
   int bytes_sent=0;
   eth_state_t *eth = (eth_state_t*)device->priv;
   int sendto_flag =0;
   fhstate_t *fhstate = &device->fhstate;
 
-  AssertFatal((nsamps&255) == 0,"transport size should be a multiple of 256 samples, have %d\n",nsamps);
   //sendto_flag|=flags;
   eth->tx_nsamps=nsamps;
 
-  int ntx = device->openair0_cfg->tx_num_channels; 
-  void *buff2[ntx];
+  void *buff2;
 #if defined(__x86_64) || defined(__i386__)
 #ifdef __AVX2__
   int nsamps2 = 256>>3;
-  __m256i buff_tx[ntx][nsamps2+1];
-  for (int aid=0;aid<ntx;aid++) buff2[aid]=(void*)&buff_tx[aid][1] - APP_HEADER_SIZE_BYTES;
+  __m256i buff_tx[nsamps2+1];
+  buff2=(void*)&buff_tx[1] - APP_HEADER_SIZE_BYTES;
 #else
   int nsamps2 = 256>>2;
-  __m128i buff_tx[ntx][nsamps2+2];
-  for (int aid=0;aid<ntx;aid++) buff2[aid]=(void*)&buff_tx[aid][2] - APP_HEADER_SIZE_BYTES;
+  __m128i buff_tx[nsamps2+2];
+  buff=(void*)&buff_tx[2] - APP_HEADER_SIZE_BYTES;
 #endif
 #elif defined(__arm__) || defined(__aarch64__)
   int nsamps2 = 256>>2;
-  int16x8_t buff_tx[ntx][nsamps2+2];
-  for (int aid=0;aid<ntx;aid++) buff2[aid]=(void*)&buff_tx[aid][2] - APP_HEADER_SIZE_BYTES;
+  int16x8_t buff_tx[nsamps2+2];
+  buff2=(void*)&buff_tx[2] - APP_HEADER_SIZE_BYTES;
 #else
 #error Unsupported CPU architecture, ethernet device cannot be built
 #endif
-  for (int aid=0;aid<ntx;aid++) {
 
-    /* construct application header */
-    // ECPRI Protocol revision + reserved bits (1 byte)
-      *(uint8_t *)buff2[aid] = ECPRIREV;
-    // ECPRI Message type (1 byte)
-      *(uint8_t *)(buff2[aid] + 1) = 64;
-    // ECPRI Payload Size (2 bytes)
-      *(uint8_t *)(buff2[aid] + 2) = 4;// 1024>>6;
-      *(uint8_t *)(buff2[aid] + 3) = 0;// 1024&0xff;
-    // ECPRI PC_ID (2 bytes)
-      *(uint16_t *)(buff2[aid] + 4) = aid;
+  /* construct application header */
+  // ECPRI Protocol revision + reserved bits (1 byte)
+  *(uint8_t *)buff2 = ECPRIREV;
+   // ECPRI Message type (1 byte)
+  *(uint8_t *)(buff2 + 1) = 64;
+  // ECPRI PC_ID (2 bytes)
+  *(uint16_t *)(buff2 + 4) = aid;
 
-  }
   openair0_timestamp TS = timestamp + fhstate->TS0;
   TS = 6*device->sampling_rate_ratio_d*(TS/device->sampling_rate_ratio_n);
   TS -= device->txrx_offset; 
   int TSinc = 6*256*device->sampling_rate_ratio_d/device->sampling_rate_ratio_n;
+  int len=256;
   for (int offset=0;offset<nsamps;offset+=256,TS+=TSinc) {
     // OAI modified SEQ_ID (4 bytes)
-    for (int aid=0;aid<ntx;aid++) {
-      *(uint64_t *)(buff2[aid] + 6) = TS;
+    *(uint64_t *)(buff2 + 6) = TS;
 
+    if ((offset + 256) <= nsamps) len=1024;
+    else len = (nsamps-offset)<<2; 
+    // ECPRI Payload Size (2 bytes)
+    *(uint8_t *)(buff2 + 2) = len>>8;
+    *(uint8_t *)(buff2 + 3) = len&0xff;
+    //LOG_I(PHY,"TS %llu aa %d : offset %d, len %d\n",(unsigned long long)TS,aid,offset,len);
     // bring TX data into 12 MSBs 
 #if defined(__x86_64__) || defined(__i386__)
 #ifdef __AVX2__
-      __m256i *buff256 = (__m256i *)&((uint32_t*)buff[aid])[offset];
-      for (int j=0; j<32; j+=8) {
-	 buff_tx[aid][1+j] = _mm256_slli_epi16(buff256[j],4);
-	 buff_tx[aid][2+j] = _mm256_slli_epi16(buff256[j+1],4);
-	 buff_tx[aid][3+j] = _mm256_slli_epi16(buff256[j+2],4);
-	 buff_tx[aid][4+j] = _mm256_slli_epi16(buff256[j+3],4);
-	 buff_tx[aid][5+j] = _mm256_slli_epi16(buff256[j+4],4);
-	 buff_tx[aid][6+j] = _mm256_slli_epi16(buff256[j+5],4);
-	 buff_tx[aid][7+j] = _mm256_slli_epi16(buff256[j+6],4);
-	 buff_tx[aid][8+j] = _mm256_slli_epi16(buff256[j+7],4);
-      }
+    __m256i *buff256 = (__m256i *)&((uint32_t*)buff)[offset];
+    for (int j=0; j<32; j+=8) {
+      buff_tx[1+j] = _mm256_slli_epi16(buff256[j],4);
+      buff_tx[2+j] = _mm256_slli_epi16(buff256[j+1],4);
+      buff_tx[3+j] = _mm256_slli_epi16(buff256[j+2],4);
+      buff_tx[4+j] = _mm256_slli_epi16(buff256[j+3],4);
+      buff_tx[5+j] = _mm256_slli_epi16(buff256[j+4],4);
+      buff_tx[6+j] = _mm256_slli_epi16(buff256[j+5],4);
+      buff_tx[7+j] = _mm256_slli_epi16(buff256[j+6],4);
+      buff_tx[8+j] = _mm256_slli_epi16(buff256[j+7],4);
+    }
 #else
-      __m128i *buff128 = (__m128i *)&buff[aid][offset];
-      for (int j=0; j<64; j++) buff_tx[aid][2+j] = _mm_slli_epi16(buff128[j],4);
+    __m128i *buff128 = (__m128i *)&buff[offset];
+    for (int j=0; j<64; j++) buff_tx[2+j] = _mm_slli_epi16(buff128[j],4);
 #endif
 #elif defined(__arm__)
-      int16x8_t *buff128 = (__int16x8_t*)&buff[aid][offset];
-      for (int j=0; j<64; j++) buff_tx[aid][2+j] = vshlq_n_s16(((int16x8_t *)buff128)[j],4);
+    int16x8_t *buff128 = (__int16x8_t*)&buff[offset];
+    for (int j=0; j<64; j++) buff_tx[2+j] = vshlq_n_s16(((int16x8_t *)buff128)[j],4);
 #endif
     
-
      /* Send packet */
-      bytes_sent = sendto(eth->sockfdd[aid%eth->num_fd],
-                          buff2[aid], 
-                          UDP_PACKET_SIZE_BYTES(256),
-                          sendto_flag,
-                          (struct sockaddr*)&eth->dest_addrd,
-                          eth->addr_len);
+    bytes_sent = sendto(eth->sockfdd[aid%eth->num_fd],
+                        buff2, 
+                        UDP_PACKET_SIZE_BYTES(len>>2),
+                        sendto_flag,
+                        (struct sockaddr*)&eth->dest_addrd,
+                        eth->addr_len);
       
-      if ( bytes_sent == -1) {
+    if ( bytes_sent == -1) {
 	eth->num_tx_errors++;
 	perror("ETHERNET WRITE: ");
 	exit(-1);
-      } else {
+    } else {
         eth->tx_actual_nsamps=bytes_sent>>2;
         eth->tx_count++;
-      }
     }
-  }      
+  }
   return (bytes_sent-APP_HEADER_SIZE_BYTES)>>2;
 }
       
@@ -426,12 +423,11 @@ void *udp_read_thread(void *arg) {
     }
     sleep(1);
   }
-  
+  return(0);  
 }
 
 int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uint32_t **buff, int nsamps) {
   
-  eth_state_t *eth = (eth_state_t*)device->priv;
   fhstate_t *fhstate = &device->fhstate;
   openair0_timestamp prev_read_TS= fhstate->TS_read, min_TS;
   // block until FH is ready
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
index 72a3cfef63..ccf67b4ca0 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
@@ -241,7 +241,7 @@ int ethernet_tune(openair0_device *device, unsigned int option, int value);
 * @ingroup  _oai
 */
 int eth_socket_init_udp(openair0_device *device);
-int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int flags);
+int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, void *buf, int aid, int nsamps, int flags);
 int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uint32_t **buff, int nsamps);
 
 

From 44a3a60183a00821126fbf2a871b5c0098b38709 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Mon, 23 May 2022 10:57:22 +0200
Subject: [PATCH 07/28] commented useless call to function which creates an
 assert with band n38

---
 openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c b/openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c
index 04877b292f..61f63a86a3 100644
--- a/openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c
+++ b/openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c
@@ -1961,7 +1961,7 @@ void get_delta_arfcn(int i, uint32_t nrarfcn, uint64_t N_OFFs){
   uint32_t delta_arfcn = nrarfcn - N_OFFs;
 
   if(delta_arfcn%(nr_bandtable[i].step_size)!=0)
-    AssertFatal(1 == 0, "nrarfcn %u is not on the channel raster for step size %lu", nrarfcn, nr_bandtable[i].step_size);
+    AssertFatal(1==0, "nrarfcn %u is not on the channel raster for step size %lu", nrarfcn, nr_bandtable[i].step_size);
 
 }
 
@@ -2004,7 +2004,7 @@ uint32_t to_nrarfcn(int nr_bandP,
   // This is equation before Table 5.4.2.1-1 in 38101-1-f30
   // F_REF=F_REF_Offs + deltaF_Global(N_REF-NREF_REF_Offs)
   nrarfcn =  (((dl_CarrierFreq_by_1k - F_REF_Offs_khz)/deltaFglobal)+N_REF_Offs);
-  get_delta_arfcn(i, nrarfcn, nr_bandtable[i].N_OFFs_DL);
+  //get_delta_arfcn(i, nrarfcn, nr_bandtable[i].N_OFFs_DL);
 
   return nrarfcn;
 }

From d0be523f6c336240b8b252e73521d9fcc3caf7f0 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Mon, 23 May 2022 22:06:23 +0200
Subject: [PATCH 08/28] corrections for 20 and 40 MHz n38. Some assertions were
 wrong.

---
 openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c | 4 ++--
 openair2/LAYER2/NR_MAC_gNB/config.c           | 6 +++++-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c b/openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c
index 61f63a86a3..9b1b595608 100644
--- a/openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c
+++ b/openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c
@@ -1981,10 +1981,10 @@ uint32_t to_nrarfcn(int nr_bandP,
         "Band %d, bw %u : DL carrier frequency %llu kHz < %llu\n",
 	      nr_bandP, bw, (long long unsigned int)dl_CarrierFreq_by_1k,
 	      (long long unsigned int)nr_bandtable[i].dl_min);
-  AssertFatal(dl_CarrierFreq_by_1k <= (nr_bandtable[i].dl_max - bw_kHz),
+  AssertFatal(dl_CarrierFreq_by_1k <= (nr_bandtable[i].dl_max - bw_kHz/2),
         "Band %d, dl_CarrierFreq %llu bw %u: DL carrier frequency %llu kHz > %llu\n",
 	      nr_bandP, (long long unsigned int)dl_CarrierFreq,bw, (long long unsigned int)dl_CarrierFreq_by_1k,
-	      (long long unsigned int)(nr_bandtable[i].dl_max - bw_kHz));
+	      (long long unsigned int)(nr_bandtable[i].dl_max - bw_kHz/2));
  
   int deltaFglobal = 60;
   uint32_t N_REF_Offs = 2016667;
diff --git a/openair2/LAYER2/NR_MAC_gNB/config.c b/openair2/LAYER2/NR_MAC_gNB/config.c
index 5d17f1fe61..ee71f8ac03 100644
--- a/openair2/LAYER2/NR_MAC_gNB/config.c
+++ b/openair2/LAYER2/NR_MAC_gNB/config.c
@@ -354,7 +354,11 @@ void config_common(int Mod_idP, int ssb_SubcarrierOffset, rrc_pdsch_AntennaPorts
     ssb_SubcarrierOffset_limit = 12;
   if (ssb_SubcarrierOffset<ssb_SubcarrierOffset_limit)
     AssertFatal(sco==(scs_scaling * ssb_SubcarrierOffset),
-                "absoluteFrequencySSB has a subcarrier offset of %d while it should be %d\n",sco/scs_scaling,ssb_SubcarrierOffset);
+                "absoluteFrequencySSB has a subcarrier offset of %d/%d while it should be %d (%lu,%lu,%lu)\n",
+                sco,scs_scaling,ssb_SubcarrierOffset,
+                *scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB,
+                scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencyPointA,
+                absolute_diff);
   cfg->ssb_table.ssb_offset_point_a.value = absolute_diff/(12*scs_scaling) - 10; //absoluteFrequencySSB is the central frequency of SSB which is made by 20RBs in total
   cfg->ssb_table.ssb_offset_point_a.tl.tag = NFAPI_NR_CONFIG_SSB_OFFSET_POINT_A_TAG;
   cfg->num_tlv++;

From 2b426c0cc90528147b60fa0cb4d5396bec0f6116 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <Raymond Knopp>
Date: Sat, 28 May 2022 07:47:41 +0200
Subject: [PATCH 09/28] added threadPool for IF5 TX path

---
 executables/nr-ru.c                           |  7 +-
 targets/ARCH/COMMON/common_lib.h              |  8 +++
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c | 69 ++++++++++++++-----
 .../ETHERNET/USERSPACE/LIB/ethernet_lib.c     | 17 ++++-
 .../ETHERNET/USERSPACE/LIB/ethernet_lib.h     | 22 ++++++
 5 files changed, 104 insertions(+), 19 deletions(-)

diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index 662cbdb9e1..a9c7c65b42 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -276,6 +276,7 @@ int connect_rau(RU_t *ru) {
 void fh_if5_south_out(RU_t *ru, int frame, int slot, uint64_t timestamp) {
   if (ru == RC.ru[0]) VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TST, ru->proc.timestamp_tx&0xffffffff );
   int offset = ru->nr_frame_parms->get_samples_slot_timestamp(slot,ru->nr_frame_parms,0);
+  return;
   start_meas(&ru->tx_fhaul);
   for (int aid=0;aid<ru->nb_tx;aid++)  
     ru->ifdevice.trx_write_func2(&ru->ifdevice,
@@ -1276,9 +1277,9 @@ void *ru_thread( void *param ) {
   memcpy((void *)&ru->config,(void *)&RC.gNB[0]->gNB_config,sizeof(ru->config));
 
   if(emulate_rf) {
-    fill_rf_config(ru,ru->rf_config_file);
     nr_init_frame_parms(&ru->config, fp);
     nr_dump_frame_parms(fp);
+    fill_rf_config(ru,ru->rf_config_file);
     nr_phy_init_RU(ru);
 
     if (setup_RU_buffers(ru)!=0) {
@@ -1870,6 +1871,7 @@ void set_function_spec_param(RU_t *ru) {
       ru->ifdevice.eth_params    = &ru->eth_params;
       ru->ifdevice.configure_rru = configure_ru;
 
+      printf("starting transport : rx_num_antennas %d, tx_num_antennas %d\n",ru->openair0_cfg.rx_num_channels,ru->openair0_cfg.tx_num_channels); 
       ret = openair0_transport_load(&ru->ifdevice,&ru->openair0_cfg,&ru->eth_params);
       printf("openair0_transport_init returns %d for ru_id %u\n", ret, ru->idx);
 
@@ -1990,7 +1992,8 @@ void init_NR_RU(char *rf_config_file) {
         }
       }
     }
-
+    ru->openair0_cfg.rx_num_channels = ru->nb_rx;
+    ru->openair0_cfg.tx_num_channels = ru->nb_tx;
     //LOG_I(PHY,"Initializing RRU descriptor %d : (%s,%s,%d)\n",ru_id,ru_if_types[ru->if_south],NB_timing[ru->if_timing],ru->function);
     set_function_spec_param(ru);
     LOG_I(PHY,"Starting ru_thread %d\n",ru_id);
diff --git a/targets/ARCH/COMMON/common_lib.h b/targets/ARCH/COMMON/common_lib.h
index f3dcc35e53..d8a9d11c8a 100644
--- a/targets/ARCH/COMMON/common_lib.h
+++ b/targets/ARCH/COMMON/common_lib.h
@@ -37,6 +37,7 @@
 #include <sys/types.h>
 #include <openair1/PHY/TOOLS/tools_defs.h>
 #include "record_player.h"
+#include <common/utils/threadPool/thread-pool.h>
 
 /* default name of shared library implementing the radio front end */
 #define OAI_RF_LIBNAME        "oai_device"
@@ -325,6 +326,7 @@ typedef struct fhstate_s {
   openair0_timestamp olddeltaTS[8];
   openair0_timestamp oldTS[8];
   openair0_timestamp TS_read;
+  int first_read;
   uint32_t *buff[8];
   uint32_t buff_size;
   int r[8];
@@ -368,6 +370,12 @@ struct openair0_device_t {
   /*!brief pointer to FH state, used in ECPRI split 8*/
   fhstate_t fhstate;
 
+  /*!brief threadpool for UDP write*/
+  tpool_t *threadPool;
+
+  /*!brief message response for notification fifo*/
+  notifiedFIFO_t *respudpTX;
+
   /*!brief Used in ECPRI split 8 to indicate numerator of sampling rate ratio*/
   int sampling_rate_ratio_n;
 
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index f043b6ded4..79b0c84ac3 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -152,11 +152,11 @@ int eth_socket_init_udp(openair0_device *device) {
       printf("ETHERNET: Cannot set SO_REUSEPORT option on socket (user %d)",i);
       exit(0);
     }
-#ifdef SO_ATTACH_REUSEPORT_EBPF    
+#ifdef SO_ATTACH_REUSEPORT_EBPF*/    
     struct sock_filter code[]={
-   		{ BPF_LD  | BPF_W | BPF_ABS, 0, 0, SKF_AD_OFF + SKF_AD_CPU },
-		/* return A */
-		{ BPF_RET | BPF_A, 0, 0, 0 },
+              { BPF_LD  | BPF_W | BPF_ABS, 0, 0, SKF_AD_OFF + SKF_AD_CPU }, // A = #cpu
+              { BPF_ALU | BPF_MOD | BPF_K, 0, 0, eth->num_fd},     // A = A % group_size
+              { BPF_RET | BPF_A, 0, 0, 0 },                                 // return A
     };
     struct sock_fprog bpf = {
       .len = sizeof(code)/sizeof(struct sock_filter),
@@ -166,6 +166,7 @@ int eth_socket_init_udp(openair0_device *device) {
       printf("ETHERNET: Cannot set SO_ATTACH_REUSEPORT_EBPF option on socket (user %d)",i);
       exit(0);
     }
+    else printf("ETHERNET: set SO_ATTACH_REUSEPORT_EBPF option on socket (user %d)\n",i);
 #endif
 
   }
@@ -205,7 +206,7 @@ int trx_eth_read_udp_IF4p5(openair0_device *device, openair0_timestamp *timestam
 
   while(bytes_received == -1) {
   again:
-    bytes_received = recvfrom(eth->sockfdd[cc%eth->num_fd],
+    bytes_received = recvfrom(eth->sockfdd[0/*cc%eth->num_fd*/],
                               buff[0],
                               packet_size,
                               0,
@@ -236,7 +237,6 @@ int trx_eth_read_udp_IF4p5(openair0_device *device, openair0_timestamp *timestam
       eth->rx_count++;
     }
   }
-
   eth->rx_nsamps = nsamps;  
   return(bytes_received);
 }
@@ -271,7 +271,7 @@ int trx_eth_write_udp_IF4p5(openair0_device *device, openair0_timestamp timestam
    
   eth->tx_nsamps = nblocks;
 
-  bytes_sent = sendto(eth->sockfdd[cc%eth->num_fd],
+  bytes_sent = sendto(eth->sockfdd[0/*cc%eth->num_fd*/],
 		      buff[0], 
 		      packet_size,
 		      0,
@@ -289,7 +289,17 @@ int trx_eth_write_udp_IF4p5(openair0_device *device, openair0_timestamp timestam
   return (bytes_sent);  	  
 }
 
-int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, void *buff, int aid, int nsamps, int flags) {	
+
+
+void *trx_eth_write_udp_cmd(void *arg) {
+
+  udpTXelem_t *udpTXelem=(udpTXelem_t*)arg;
+
+  openair0_device *device=udpTXelem->device;
+  openair0_timestamp timestamp = udpTXelem->timestamp;
+  void *buff = udpTXelem->buff;
+  int aid = udpTXelem->buff;
+  int nsamps = udpTXelem->nsamps;
   
   int bytes_sent=0;
   eth_state_t *eth = (eth_state_t*)device->priv;
@@ -365,7 +375,7 @@ int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, voi
 #endif
     
      /* Send packet */
-    bytes_sent = sendto(eth->sockfdd[aid%eth->num_fd],
+    bytes_sent = sendto(eth->sockfdd[0/*aid%eth->num_fd*/],
                         buff2, 
                         UDP_PACKET_SIZE_BYTES(len>>2),
                         sendto_flag,
@@ -381,9 +391,22 @@ int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, voi
         eth->tx_count++;
     }
   }
-  return (bytes_sent-APP_HEADER_SIZE_BYTES)>>2;
 }
       
+int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, void *buff, int aid, int nsamps, int flags) {	
+
+    union udpTXReqUnion id = {.s={(uint64_t)timestamp,aid,nsamps,0}};
+    notifiedFIFO_elt_t *req=newNotifiedFIFO_elt(sizeof(udpTXelem_t), id.p, device->respudpTX, trx_eth_write_udp_cmd);
+    udpTXelem_t * udptxelem=(udpTXelem_t *) NotifiedFifoData(req);
+
+    udptxelem->device = device;
+    udptxelem->timestamp = timestamp;
+    udptxelem->buff = buff;
+    udptxelem->aid = aid;
+    udptxelem->nsamps = nsamps;
+    udptxelem->flags = flags;
+    pushTpool(device->threadPool,req);
+}
 extern int oai_exit;
 
 void *udp_read_thread(void *arg) {
@@ -394,11 +417,11 @@ void *udp_read_thread(void *arg) {
   openair0_device *device=u->device;
   fhstate_t *fhstate = &device->fhstate;
   char buffer[UDP_PACKET_SIZE_BYTES(256)];
-
+  int first_read=0;
   while (oai_exit == 0) {
     LOG_I(PHY,"UDP read thread %d, waiting for start sampling_rate_d %d, sampling_rate_n %d\n",u->thread_id,device->sampling_rate_ratio_n,device->sampling_rate_ratio_d);
     while (fhstate->active > 0) {
-      size_t count = recvfrom(((eth_state_t*)device->priv)->sockfdd[u->thread_id],
+      size_t count = recvfrom(((eth_state_t*)device->priv)->sockfdd[0],
                               buffer,sizeof(buffer),0,
                               (struct sockaddr *)&((eth_state_t*)device->priv)->dest_addrd,
                               (socklen_t *)&((eth_state_t*)device->priv)->addr_len);
@@ -409,7 +432,8 @@ void *udp_read_thread(void *arg) {
       if ((int)count <= 0)  continue;
       AssertFatal(aid < 8,"Cannot handle more than 8 antennas, got aid %d\n",aid);
       fhstate->r[aid]=1;
-      if (aid==0 && fhstate->TS[0] == 0) fhstate->TS0 = TS;
+      if (aid==0 && first_read == 0) fhstate->TS0 = TS;
+      first_read = 1;
       /* store the timestamp value from packet's header */
       fhstate->TS[aid] =  TS;
       int64_t offset =  TS - fhstate->TS0;
@@ -420,6 +444,7 @@ void *udp_read_thread(void *arg) {
       memcpy((void*)(device->openair0_cfg->rxbase[aid]+offset),
              (void*)&buffer[APP_HEADER_SIZE_BYTES],
              count-APP_HEADER_SIZE_BYTES); 
+      LOG_D(PHY,"thread_id %d, aid %d, TS %llu, TS0 %llu, offset %d\n",u->thread_id,aid,(unsigned long long)TS,fhstate->TS0,offset);
     }
     sleep(1);
   }
@@ -438,14 +463,26 @@ int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uin
   min_TS = fhstate->TS[0];
   for (int i=1;i<device->openair0_cfg->rx_num_channels;i++) min_TS = min(min_TS,fhstate->TS[i]);
   // poll/sleep until we accumulated enough samples on each antenna port
-  while (min_TS < fhstate->TS0+prev_read_TS + nsamps) {
+  int count=0;
+  while (fhstate->first_read == 1 && min_TS < (fhstate->TS0+prev_read_TS + nsamps)) {
     usleep(100);
     min_TS = fhstate->TS[0];
     for (int i=1;i<device->openair0_cfg->rx_num_channels;i++) min_TS = min(min_TS,fhstate->TS[i]);
+    count++;
   }
 
-  *timestamp = fhstate->TS_read;
-  fhstate->TS_read = prev_read_TS + nsamps;
+  if (fhstate->first_read == 0) {
+     *timestamp = min_TS - fhstate->TS0;
+     fhstate->TS_read = *timestamp+nsamps;
+     LOG_D(PHY,"first read : TS_read %llu, TS %llu state (%d,%d,%d,%d,%d,%d,%d,%d)\n",fhstate->TS_read,*timestamp,
+           fhstate->r[0],fhstate->r[1],fhstate->r[2],fhstate->r[3],fhstate->r[4],fhstate->r[5],fhstate->r[6],fhstate->r[7]);
+  }
+  else {  
+     *timestamp = fhstate->TS_read;
+     fhstate->TS_read = prev_read_TS + nsamps;
+     LOG_D(PHY,"TS_read %llu, min_TS %llu, prev_read_TS %llu, nsamps %d, fhstate->TS0+prev_TS+nsamps %llu, wait count %d x 100us\n",fhstate->TS_read,min_TS,prev_read_TS,nsamps,fhstate->TS0+prev_read_TS+nsamps,count);
+  }
+  fhstate->first_read = 1;
   return (nsamps);
 }
 
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
index b5a21c5d16..dc80c8dcb4 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
@@ -64,7 +64,7 @@ int trx_eth_start(openair0_device *device)
        AssertFatal(device->thirdparty_init != NULL, "device->thirdparty_init is null\n");
        AssertFatal(device->thirdparty_init(device) == 0, "third-party init failed\n");
        device->openair0_cfg->samples_per_packet = 256;
-       eth->num_fd = max(device->openair0_cfg->rx_num_channels,device->openair0_cfg->tx_num_channels); 
+       eth->num_fd = 1; //max(device->openair0_cfg->rx_num_channels,device->openair0_cfg->tx_num_channels); 
        printf("Creating %d UDP threads ...\n",device->openair0_cfg->rx_num_channels);
        udp_read_t *u[device->openair0_cfg->rx_num_channels];
        for (int i=0;i<device->openair0_cfg->rx_num_channels;i++) {
@@ -112,6 +112,20 @@ int trx_eth_start(openair0_device *device)
 	  }
           else AssertFatal(1==0,"num_rb_dl %d not ok with ECPRI\n",device->openair0_cfg->num_rb_dl);
        }
+       int threadCnt = device->openair0_cfg->tx_num_channels;
+       if (threadCnt < 2) LOG_E(PHY,"Number of threads for gNB should be more than 1. Allocated only %d\n",threadCnt);
+       char pool[80];
+       sprintf(pool,"-1");
+       int s_offset = 0;
+       for (int icpu=1; icpu<threadCnt; icpu++) {
+          sprintf(pool+2+s_offset,",-1");
+          s_offset += 3;
+       }
+       device->threadPool = (tpool_t*)malloc(sizeof(tpool_t));
+       initTpool(pool, device->threadPool, cpumeas(CPUMEAS_GETSTATE));
+       // ULSCH decoder result FIFO
+       device->respudpTX = (notifiedFIFO_t*) malloc(sizeof(notifiedFIFO_t));
+       initNotifiedFIFO(device->respudpTX);
    }
    /* initialize socket */
     if (eth->flags == ETH_RAW_MODE) {
@@ -502,6 +516,7 @@ int transport_init(openair0_device *device,
         device->trx_ctlsend_func = trx_eth_ctlsend_udp;
         device->trx_ctlrecv_func = trx_eth_ctlrecv_udp;
         memset((void*)&device->fhstate,0,sizeof(device->fhstate));
+        printf("Setting %d RX channels to waiting\n",openair0_cfg->rx_num_channels);
 	for (int i=openair0_cfg->rx_num_channels;i<8;i++) device->fhstate.r[i] = 1;
     } else if (eth->flags == ETH_RAW_IF4p5_MODE) {
         device->trx_write_func   = trx_eth_write_raw_IF4p5;
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
index ccf67b4ca0..60c10abd8a 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h
@@ -41,6 +41,7 @@
 #include <sys/socket.h>
 #include <net/if.h>
 #include <netinet/ether.h>
+#include <common/utils/threadPool/thread-pool.h>
 
 #define MAX_INST 4
 #define DEFAULT_IF "lo"
@@ -209,6 +210,27 @@ typedef struct {
   short q;
 } iqoai_t ;
 
+typedef struct udpTXelem_s {
+  openair0_device *device;
+  openair0_timestamp timestamp;
+  void *buff;
+  int aid;
+  int nsamps;
+  int flags;
+} udpTXelem_t;
+
+struct udpTXReqId {
+  uint64_t TS;
+  int aid;
+  int length;
+  uint16_t spare;
+} __attribute__((packed));
+
+union udpTXReqUnion {
+  struct udpTXReqId s;
+  uint64_t p;
+};
+
 void dump_packet(char *title, unsigned char* pkt, int bytes, unsigned int tx_rx_flag);
 unsigned short calc_csum (unsigned short *buf, int nwords);
 void dump_dev(openair0_device *device);

From ca782ef2cba24e5b9dc068e49e9d60f7be00c21e Mon Sep 17 00:00:00 2001
From: Raymond Knopp <Raymond Knopp>
Date: Mon, 30 May 2022 07:21:39 +0200
Subject: [PATCH 10/28] added threadPool to RU entity (FEP and FEP TX)

---
 executables/nr-ru.c                           |  73 ++++--
 openair1/PHY/defs_RU.h                        |  30 ++-
 openair1/SCHED/ru_procedures.c                |  44 ++--
 openair1/SCHED_NR/nr_ru_procedures.c          | 246 +++++++++++++-----
 openair1/SCHED_NR/sched_nr.h                  |   2 +
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c |  11 +-
 .../ETHERNET/USERSPACE/LIB/ethernet_lib.c     |   2 +-
 7 files changed, 304 insertions(+), 104 deletions(-)

diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index a9c7c65b42..5e562eff31 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -58,6 +58,8 @@
 unsigned short config_frames[4] = {2,9,11,13};
 #endif
 
+#define USE_TPOOL 1 
+
 /* these variables have to be defined before including ENB_APP/enb_paramdef.h and GNB_APP/gnb_paramdef.h */
 static int DEFBANDS[] = {7};
 static int DEFENBS[] = {0};
@@ -276,7 +278,6 @@ int connect_rau(RU_t *ru) {
 void fh_if5_south_out(RU_t *ru, int frame, int slot, uint64_t timestamp) {
   if (ru == RC.ru[0]) VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TST, ru->proc.timestamp_tx&0xffffffff );
   int offset = ru->nr_frame_parms->get_samples_slot_timestamp(slot,ru->nr_frame_parms,0);
-  return;
   start_meas(&ru->tx_fhaul);
   for (int aid=0;aid<ru->nb_tx;aid++)  
     ru->ifdevice.trx_write_func2(&ru->ifdevice,
@@ -319,7 +320,6 @@ void fh_if5_south_in(RU_t *ru,
   proc->frame_rx    = ((proc->timestamp_rx-ru->ts_offset) / (fp->samples_per_subframe*10))&1023;
   proc->tti_rx = fp->get_slot_from_timestamp(proc->timestamp_rx-ru->ts_offset,fp);
 
-  LOG_D(PHY,"IF5 %d.%d => RX %d.%d first_rx %d\n",*frame,*tti,proc->frame_rx,proc->tti_rx,proc->first_rx); 
 
   if (proc->first_rx == 0) {
     if (proc->tti_rx != *tti) {
@@ -338,6 +338,7 @@ void fh_if5_south_in(RU_t *ru,
   }
 
   stop_meas(&ru->rx_fhaul);
+  LOG_I(PHY,"IF5 %d.%d => RX %d.%d first_rx %d: time %f\n",*frame,*tti,proc->frame_rx,proc->tti_rx,proc->first_rx,ru->rx_fhaul.p_time/(cpu_freq_GHz*1000.0));
   VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, proc->timestamp_rx&0xffffffff );
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_RECV_IF5, 0 );
 
@@ -1179,7 +1180,6 @@ void *ru_stats_thread(void *param) {
       if (ru->feptx_ofdm) {
         print_meas(&ru->precoding_stats,"feptx_prec",NULL,NULL);
         print_meas(&ru->txdataF_copy_stats,"txdataF_copy",NULL,NULL);
-        print_meas(&ru->ofdm_mod_stats,"feptx_ofdm",NULL,NULL);
         if (ru->txfh_in_fep) {
           print_meas(&ru->ofdm_mod_stats,"feptx_ofdm (with txfh)",NULL,NULL);
 	  print_meas(&ru->ofdm_total_stats,"feptx_total (with txfh)",NULL,NULL);
@@ -1560,9 +1560,10 @@ void init_RU_proc(RU_t *ru) {
   if (opp_enabled == 1) 
     threadCreate( &ru->ru_stats_thread, ru_stats_thread, (void *)ru,"ru_stats", -1, OAI_PRIORITY_RT );
   if (get_thread_worker_conf() == WORKER_ENABLE) {
+#ifndef USE_TPOOL
     if (ru->feprx) nr_init_feprx_thread(ru);
-
     if (ru->feptx_ofdm) nr_init_feptx_thread(ru);
+#endif
   }
 
 }
@@ -1574,15 +1575,18 @@ void kill_NR_RU_proc(int inst) {
   pthread_join(proc->pthread_FH, NULL);
 
   if (get_nprocs() >= 2) {
+#ifndef USE_TPOOL	    
     if (ru->feprx) {
-      pthread_mutex_lock(&proc->mutex_fep);
-      proc->instance_cnt_fep = 0;
-      pthread_mutex_unlock(&proc->mutex_fep);
-      pthread_cond_signal(&proc->cond_fep);
-      LOG_D(PHY, "Joining pthread_fep\n");
-      pthread_join(proc->pthread_fep, NULL);
-      pthread_mutex_destroy(&proc->mutex_fep);
-      pthread_cond_destroy(&proc->cond_fep);
+      for (int aid=0;aid<ru->nb_rx;aid++) {
+	 pthread_mutex_lock(&proc->mutex_fep[aid]);
+         proc->instance_cnt_fep[aid] = 0;
+         pthread_mutex_unlock(&proc->mutex_fep[aid]);
+         pthread_cond_signal(&proc->cond_fep[aid]);
+         LOG_D(PHY, "Joining pthread_fep %d\n",aid);
+         pthread_join(proc->pthread_fep[aid], NULL);
+         pthread_mutex_destroy(&proc->mutex_fep[aid]);
+         pthread_cond_destroy(&proc->cond_fep[aid]);
+      }
     }
 
     if (ru->feptx_ofdm) {
@@ -1595,8 +1599,8 @@ void kill_NR_RU_proc(int inst) {
       pthread_mutex_destroy(&proc->mutex_feptx);
       pthread_cond_destroy(&proc->cond_feptx);
     }
+#endif
   }
-
   if (opp_enabled) {
     LOG_D(PHY, "Joining ru_stats_thread\n");
     pthread_join(ru->ru_stats_thread, NULL);
@@ -1804,8 +1808,13 @@ void set_function_spec_param(RU_t *ru) {
         ru->fh_north_out          = fh_if4p5_north_out;       // send_IF4p5 on reception
         ru->fh_south_out          = tx_rf;                    // send output to RF
         ru->fh_north_asynch_in    = fh_if4p5_north_asynch_in; // TX packets come asynchronously
-        ru->feprx                 = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_full_2thread : nr_fep_full;     // RX DFTs
+#ifdef USE_TPOOL
+        ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_tp   : nr_fep_full;     // this is frequency-shift + DFTs
+        ru->feptx_ofdm            = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_tp : nr_feptx_ofdm; // this is fep with idft only (no precoding in RRU)
+#else
+        ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_full_2thread   : nr_fep_full;     // this is frequency-shift + DFTs
         ru->feptx_ofdm            = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_ofdm_2thread : nr_feptx_ofdm; // this is fep with idft only (no precoding in RRU)
+#endif
         ru->feptx_prec            = NULL;
         ru->nr_start_if           = nr_start_if;              // need to start the if interface for if4p5
         ru->ifdevice.host_type    = RRU_HOST;
@@ -1825,8 +1834,13 @@ void set_function_spec_param(RU_t *ru) {
         malloc_IF4p5_buffer(ru);
       } else if (ru->function == gNodeB_3GPP) {
         ru->do_prach             = 0;                       // no prach processing in RU
-        ru->feprx                = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_full_2thread   : nr_fep_full;                // RX DFTs
+#ifdef USE_TPOOL
+        ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_tp   : nr_fep_full;     // this is frequency-shift + DFTs
+        ru->feptx_ofdm           = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_tp: nr_feptx_ofdm;              // this is fep with idft and precoding
+#else
+        ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_full_2thread   : nr_fep_full;     // this is frequency-shift + DFTs
         ru->feptx_ofdm           = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_ofdm_2thread : nr_feptx_ofdm;              // this is fep with idft and precoding
+#endif
         ru->feptx_prec           = (get_thread_worker_conf() == WORKER_ENABLE) ? NULL                  : nr_feptx_prec;           // this is fep with idft and precoding
         ru->fh_north_in          = NULL;                    // no incoming fronthaul from north
         ru->fh_north_out         = NULL;                    // no outgoing fronthaul to north
@@ -1856,12 +1870,18 @@ void set_function_spec_param(RU_t *ru) {
 
     case REMOTE_IF5: // the remote unit is IF5 RRU
       ru->do_prach               = 0;
-//      ru->txfh_in_fep            = 1;
+      ru->txfh_in_fep            = 1;
+#ifdef USE_TPOOL
+      ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_tp   : nr_fep_full;     // this is frequency-shift + DFTs
+      ru->feptx_prec             = (get_thread_worker_conf() == WORKER_ENABLE) ? NULL                  : nr_feptx_prec;          // need to do transmit Precoding + IDFTs
+      ru->feptx_ofdm             = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_tp: nr_feptx_ofdm; // need to do transmit Precoding + IDFTs
+#else
       ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_full_2thread   : nr_fep_full;     // this is frequency-shift + DFTs
       ru->feptx_prec             = (get_thread_worker_conf() == WORKER_ENABLE) ? NULL                  : nr_feptx_prec;          // need to do transmit Precoding + IDFTs
       ru->feptx_ofdm             = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_ofdm_2thread : nr_feptx_ofdm; // need to do transmit Precoding + IDFTs
+#endif
       ru->fh_south_in            = fh_if5_south_in;     // synchronous IF5 reception
-      ru->fh_south_out           = (ru->txfh_in_fep) ? NULL : fh_if5_south_out;    // synchronous IF5 transmission
+      ru->fh_south_out           = (ru->txfh_in_fep>0) ? NULL : fh_if5_south_out;    // synchronous IF5 transmission
       ru->fh_south_asynch_in     = NULL;                // no asynchronous UL
       ru->start_rf               = ru->eth_params.transp_preference == ETH_UDP_IF5_ECPRI_MODE ? start_streaming : NULL;
       ru->stop_rf                = NULL;
@@ -1998,6 +2018,25 @@ void init_NR_RU(char *rf_config_file) {
     set_function_spec_param(ru);
     LOG_I(PHY,"Starting ru_thread %d\n",ru_id);
     init_RU_proc(ru);
+    int threadCnt = ru->nb_rx+ru->nb_tx;
+    if (threadCnt < 2) LOG_E(PHY,"Number of threads for gNB should be more than 1. Allocated only %d\n",threadCnt);
+    char pool[80];
+    sprintf(pool,"-1");
+    int s_offset = 0;
+    for (int icpu=1; icpu<threadCnt; icpu++) {
+       sprintf(pool+2+s_offset,",-1");
+       s_offset += 3;
+    }
+#ifdef USE_TPOOL    
+    ru->threadPool = (tpool_t*)malloc(sizeof(tpool_t));
+    initTpool(pool, ru->threadPool, cpumeas(CPUMEAS_GETSTATE));
+    // FEP RX result FIFO
+    ru->respfeprx = (notifiedFIFO_t*) malloc(sizeof(notifiedFIFO_t));
+    initNotifiedFIFO(ru->respfeprx);
+    // FEP TX result FIFO
+    ru->respfeptx = (notifiedFIFO_t*) malloc(sizeof(notifiedFIFO_t));
+    initNotifiedFIFO(ru->respfeptx);
+#endif
   } // for ru_id
 
   //  sleep(1);
diff --git a/openair1/PHY/defs_RU.h b/openair1/PHY/defs_RU.h
index 6078e2f857..20505ca6f4 100644
--- a/openair1/PHY/defs_RU.h
+++ b/openair1/PHY/defs_RU.h
@@ -39,6 +39,7 @@
 #include "time_meas.h"
 #include "defs_common.h"
 #include "nfapi_nr_interface_scf.h"
+#include <common/utils/threadPool/thread-pool.h>
 
 #define MAX_BANDS_PER_RRU 4
 #define MAX_RRU_CONFIG_SIZE 1024
@@ -188,6 +189,20 @@ typedef struct RU_feptx_t_s{
   int index;
 }RU_feptx_t;
 
+typedef struct {
+ int aid;
+ struct RU_t_s *ru;
+ int start_symbol;
+ int end_symbol;
+ int slot; 
+} feprx_cmd_t;
+
+typedef struct {
+ int aid;
+ struct RU_t_s *ru;
+ int slot; 
+} feptx_cmd_t;
+
 typedef struct {
   int frame;
   int slot;
@@ -246,7 +261,7 @@ typedef struct RU_proc_t_s {
   /// \internal This variable is protected by \ref mutex_asynch_rxtx.
   int instance_cnt_asynch_rxtx;
   /// \internal This variable is protected by \ref mutex_fep
-  int instance_cnt_fep;
+  int instance_cnt_fep[8];
   /// \internal This variable is protected by \ref mutex_feptx
   int instance_cnt_feptx;
   /// \internal This variable is protected by \ref mutex_ru_thread
@@ -265,7 +280,7 @@ typedef struct RU_proc_t_s {
   /// pthread struct for RU synch thread
   pthread_t pthread_synch;
   /// pthread struct for RU RX FEP worker thread
-  pthread_t pthread_fep;
+  pthread_t pthread_fep[8];
   /// pthread struct for RU TX FEP worker thread
   pthread_t pthread_feptx;
   /// pthread struct for emulated RF
@@ -318,7 +333,7 @@ typedef struct RU_proc_t_s {
   /// condition variable for asynch RX/TX thread
   pthread_cond_t cond_asynch_rxtx;
   /// condition varible for RU RX FEP thread
-  pthread_cond_t cond_fep;
+  pthread_cond_t cond_fep[8];
   /// condition varible for RU TX FEP thread
   pthread_cond_t cond_feptx;
   /// condition varible for emulated RF
@@ -345,7 +360,7 @@ typedef struct RU_proc_t_s {
   /// mutex for asynch RX/TX thread
   pthread_mutex_t mutex_asynch_rxtx;
   /// mutex for fep RX worker thread
-  pthread_mutex_t mutex_fep;
+  pthread_mutex_t mutex_fep[8];
   /// mutex for fep TX worker thread
   pthread_mutex_t mutex_feptx;
   /// mutex for ru_thread
@@ -433,6 +448,8 @@ typedef enum {
 
 
 typedef struct RU_t_s {
+  /// ThreadPool for RU	
+  tpool_t *threadPool;
   /// index of this ru
   uint32_t idx;
   /// pointer to first RU
@@ -647,6 +664,11 @@ typedef struct RU_t_s {
   uint64_t if_frequency;
   /// UL IF frequency offset to DL IF frequency in Hz
   int if_freq_offset;
+  /// to signal end of feprx
+  notifiedFIFO_t *respfeprx;
+  /// to signal end of feptx
+  notifiedFIFO_t *respfeptx;
+
 } RU_t;
 
 
diff --git a/openair1/SCHED/ru_procedures.c b/openair1/SCHED/ru_procedures.c
index dc84279a96..73e174cef2 100644
--- a/openair1/SCHED/ru_procedures.c
+++ b/openair1/SCHED/ru_procedures.c
@@ -566,15 +566,15 @@ static void *fep_thread(void *param)
 
   while (!oai_exit) {
 
-    if (wait_on_condition(&proc->mutex_fep,&proc->cond_fep,&proc->instance_cnt_fep,"fep thread")<0) break; 
+    if (wait_on_condition(&proc->mutex_fep[0],&proc->cond_fep[0],&proc->instance_cnt_fep[0],"fep thread")<0) break; 
     if (oai_exit) break;
 	//stop_meas(&ru->ofdm_demod_wakeup_stats);
 	//VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX1, 1 ); 
     fep0(ru,0);
 	//VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX1, 0 ); 
-    if (release_thread(&proc->mutex_fep,&proc->instance_cnt_fep,"fep thread")<0) break;
+    if (release_thread(&proc->mutex_fep[0],&proc->instance_cnt_fep[0],"fep thread")<0) break;
 
-    if (pthread_cond_signal(&proc->cond_fep) != 0) {
+    if (pthread_cond_signal(&proc->cond_fep[0]) != 0) {
       printf("[eNB] ERROR pthread_cond_signal for fep thread exit\n");
       exit_fun( "ERROR pthread_cond_signal" );
       return NULL;
@@ -607,26 +607,26 @@ void init_fep_thread(RU_t *ru,
 {
   RU_proc_t *proc = &ru->proc;
 
-  proc->instance_cnt_fep         = -1;
+  proc->instance_cnt_fep[0]         = -1;
     
-  pthread_mutex_init( &proc->mutex_fep, NULL);
-  pthread_cond_init( &proc->cond_fep, NULL);
+  pthread_mutex_init( &proc->mutex_fep[0], NULL);
+  pthread_cond_init( &proc->cond_fep[0], NULL);
 
-  threadCreate(&proc->pthread_fep, fep_thread, (void*)ru, "fep", -1, OAI_PRIORITY_RT);
+  threadCreate(&proc->pthread_fep[0], fep_thread, (void*)ru, "fep", -1, OAI_PRIORITY_RT);
 }
 
 
 extern void kill_fep_thread(RU_t *ru)
 {
   RU_proc_t *proc = &ru->proc;
-  pthread_mutex_lock( &proc->mutex_fep );
-  proc->instance_cnt_fep         = 0;
-  pthread_cond_signal(&proc->cond_fep);
-  pthread_mutex_unlock( &proc->mutex_fep );
+  pthread_mutex_lock( &proc->mutex_fep[0] );
+  proc->instance_cnt_fep[0]         = 0;
+  pthread_cond_signal(&proc->cond_fep[0]);
+  pthread_mutex_unlock( &proc->mutex_fep[0] );
   LOG_D(PHY, "Joining pthread_fep\n");
-  pthread_join(proc->pthread_fep, NULL);
-  pthread_mutex_destroy( &proc->mutex_fep );
-  pthread_cond_destroy( &proc->cond_fep );
+  pthread_join(proc->pthread_fep[0], NULL);
+  pthread_mutex_destroy( &proc->mutex_fep[0] );
+  pthread_cond_destroy( &proc->cond_fep[0] );
 }
 
 
@@ -666,35 +666,35 @@ void ru_fep_full_2thread(RU_t *ru,
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX+ru->idx, 1 );
   start_meas(&ru->ofdm_demod_stats);
 
-  if (pthread_mutex_timedlock(&proc->mutex_fep,&wait) != 0) {
-    printf("[RU] ERROR pthread_mutex_lock for fep thread (IC %d)\n", proc->instance_cnt_fep);
+  if (pthread_mutex_timedlock(&proc->mutex_fep[0],&wait) != 0) {
+    printf("[RU] ERROR pthread_mutex_lock for fep thread (IC %d)\n", proc->instance_cnt_fep[0]);
     exit_fun( "error locking mutex_fep" );
     return;
   }
 
-  if (proc->instance_cnt_fep==0) {
+  if (proc->instance_cnt_fep[0]==0) {
     printf("[RU] FEP thread busy\n");
     exit_fun("FEP thread busy");
-    pthread_mutex_unlock( &proc->mutex_fep );
+    pthread_mutex_unlock( &proc->mutex_fep[0] );
     return;
   }
   
-  ++proc->instance_cnt_fep;
+  ++proc->instance_cnt_fep[0];
 
-  if (pthread_cond_signal(&proc->cond_fep) != 0) {
+  if (pthread_cond_signal(&proc->cond_fep[0]) != 0) {
     printf("[RU] ERROR pthread_cond_signal for fep thread\n");
     exit_fun( "ERROR pthread_cond_signal" );
     return;
   }
   //start_meas(&ru->ofdm_demod_wakeup_stats);
   
-  pthread_mutex_unlock( &proc->mutex_fep );
+  pthread_mutex_unlock( &proc->mutex_fep[0] );
 
   // call second slot in this symbol
   fep0(ru,1);
 
   start_meas(&ru->ofdm_demod_wait_stats);
-  wait_on_busy_condition(&proc->mutex_fep,&proc->cond_fep,&proc->instance_cnt_fep,"fep thread");  
+  wait_on_busy_condition(&proc->mutex_fep[0],&proc->cond_fep[0],&proc->instance_cnt_fep[0],"fep thread");  
   stop_meas(&ru->ofdm_demod_wait_stats);
   if(opp_enabled == 1 && ru->ofdm_demod_wakeup_stats.p_time>30*3000){
     print_meas_now(&ru->ofdm_demod_wakeup_stats,"fep wakeup",stderr);
diff --git a/openair1/SCHED_NR/nr_ru_procedures.c b/openair1/SCHED_NR/nr_ru_procedures.c
index ffe847b6ce..22d4b97a74 100644
--- a/openair1/SCHED_NR/nr_ru_procedures.c
+++ b/openair1/SCHED_NR/nr_ru_procedures.c
@@ -527,35 +527,25 @@ void nr_feptx_prec(RU_t *ru,int frame_tx,int tti_tx) {
   stop_meas(&ru->precoding_stats);
 }
 
-void nr_fep0(RU_t *ru, int first_half) {
+void nr_fep0(RU_t *ru, int aid) {
   
-  uint8_t start_symbol, end_symbol, l, aa;
+  int l;
   RU_proc_t *proc       = &ru->proc;
   NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
   
-  if(first_half == 1) {
-    start_symbol = 0;
-    end_symbol = NR_SYMBOLS_PER_SLOT/2;
-  } else {
-    start_symbol = NR_SYMBOLS_PER_SLOT/2;
-    end_symbol = NR_SYMBOLS_PER_SLOT;
-  }
-
-  LOG_D(PHY,"In fep0 for slot = %d, first_half = %d, start_symbol = %d, end_symbol = %d\n", proc->tti_rx, first_half, start_symbol, end_symbol);
+  LOG_D(PHY,"In fep0 for slot = %d, aid = %d\n", proc->tti_rx, aid);
   //  printf("fep0: slot %d\n",slot);
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX+proc->tti_rx, 1);
 
   int offset = (proc->tti_rx&3) * fp->symbols_per_slot * fp->ofdm_symbol_size;
-  for (l = start_symbol; l < end_symbol; l++) {
-    for (aa = 0; aa < fp->nb_antennas_rx; aa++) {
-      nr_slot_fep_ul(fp,
-                     ru->common.rxdata[aa],
-                     &ru->common.rxdataF[aa][offset],
-                     l,
-                     proc->tti_rx,
-                     ru->N_TA_offset);
-    }
+  for (l = 0; l < NR_SYMBOLS_PER_SLOT; l++) {
+    nr_slot_fep_ul(fp,
+                   ru->common.rxdata[aid],
+                   &ru->common.rxdataF[aid][offset],
+                   l,
+                   proc->tti_rx,
+                   ru->N_TA_offset);
   }
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX+proc->tti_rx, 0);
 }
@@ -563,31 +553,32 @@ void nr_fep0(RU_t *ru, int first_half) {
 
 static void *nr_feprx_thread(void *param) {
 
-  RU_t *ru = (RU_t *)param;
+  feprx_cmd_t *feprx_cmd =  (feprx_cmd_t*)param;
+  RU_t *ru = feprx_cmd->ru;
   RU_proc_t *proc  = &ru->proc;
-
+  int aid=feprx_cmd->aid;
 
   while (!oai_exit) {
 
-    if (wait_on_condition(&proc->mutex_fep,&proc->cond_fep,&proc->instance_cnt_fep,"NR feprx thread")<0) break;
+    if (wait_on_condition(&proc->mutex_fep[aid-1],&proc->cond_fep[aid-1],&proc->instance_cnt_fep[aid-1],"NR feprx thread")<0) break;
 
     if (oai_exit) break;
 
     VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX1, 1 );
 
-    nr_fep0(ru, 0);
+    nr_fep0(ru, aid);
 
     VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX1, 0 );
 
-    if (release_thread(&proc->mutex_fep,&proc->instance_cnt_fep,"nr_feprx thread")<0) break;
+    if (release_thread(&proc->mutex_fep[aid-1],&proc->instance_cnt_fep[aid-1],"nr_feprx thread")<0) break;
 
-    if (pthread_cond_signal(&proc->cond_fep) != 0) {
+    if (pthread_cond_signal(&proc->cond_fep[aid-1]) != 0) {
       printf("[gNB] ERROR pthread_cond_signal for nr_feprx thread exit\n");
       exit_fun( "ERROR pthread_cond_signal" );
       return NULL;
     }
   }
-
+  free(param);
   return NULL;
 }
 
@@ -595,13 +586,17 @@ static void *nr_feprx_thread(void *param) {
 void nr_init_feprx_thread(RU_t *ru) {
 
   RU_proc_t *proc = &ru->proc;
-
-  proc->instance_cnt_fep = -1;
-    
-  pthread_mutex_init( &proc->mutex_fep, NULL);
-  pthread_cond_init( &proc->cond_fep, NULL);
-
-  threadCreate(&proc->pthread_fep, nr_feprx_thread, (void*)ru, "feprx", -1, OAI_PRIORITY_RT);
+  AssertFatal(ru->nb_rx<8,"FEP is limited to 8 antennas maximum\n");
+  feprx_cmd_t *feprx_cmd;
+  for (int aid=0;aid<(ru->nb_rx-1);aid++) {
+    proc->instance_cnt_fep[aid]= -1;
+    pthread_mutex_init( &proc->mutex_fep[aid], NULL);
+    pthread_cond_init( &proc->cond_fep[aid], NULL);
+    feprx_cmd = malloc(sizeof(feprx_cmd_t));
+    feprx_cmd->aid=aid+1;
+    feprx_cmd->ru = ru;
+    threadCreate(&proc->pthread_fep[aid], nr_feprx_thread, (void*)feprx_cmd, "feprx", -1, OAI_PRIORITY_RT);
+  }
 }
 
 
@@ -619,41 +614,42 @@ void nr_fep_full_2thread(RU_t *ru, int slot) {
   if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX, 1 );
 
   wait.tv_sec=0;
-  wait.tv_nsec=5000000L;
+  wait.tv_nsec=7000000L;
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX, 1 );
   start_meas(&ru->ofdm_demod_stats);
+  for (int aid=0;aid<ru->nb_rx-1;aid++) { 
+    if (pthread_mutex_timedlock(&proc->mutex_fep[aid],&wait) != 0) {
+      printf("[RU] ERROR timeout on pthread_mutex_lock for nr_feprx thread aid %d (IC %d)\n", aid,proc->instance_cnt_fep[aid]);
+      exit_fun( "error locking mutex_fep" );
+      return;
+    }
 
-  if (pthread_mutex_timedlock(&proc->mutex_fep,&wait) != 0) {
-    printf("[RU] ERROR pthread_mutex_lock for nr_feprx thread (IC %d)\n", proc->instance_cnt_fep);
-    exit_fun( "error locking mutex_fep" );
-    return;
-  }
-
-  if (proc->instance_cnt_fep==0) {
-    printf("[RU] FEP thread busy\n");
-    exit_fun("FEP thread busy");
-    pthread_mutex_unlock( &proc->mutex_fep );
-    return;
-  }
+    if (proc->instance_cnt_fep[aid]==0) {
+      printf("[RU] FEP thread busy\n");
+      exit_fun("FEP thread busy");
+      pthread_mutex_unlock( &proc->mutex_fep[aid] );
+      return;
+    }
   
-  ++proc->instance_cnt_fep;
+    ++proc->instance_cnt_fep[aid];
 
 
-  if (pthread_cond_signal(&proc->cond_fep) != 0) {
-    printf("[RU] ERROR pthread_cond_signal for nr_feprx thread\n");
-    exit_fun( "ERROR pthread_cond_signal" );
-    return;
-  }
-  //start_meas(&ru->ofdm_demod_wakeup_stats);
+    if (pthread_cond_signal(&proc->cond_fep[aid]) != 0) {
+      printf("[RU] ERROR pthread_cond_signal for nr_feprx thread\n");
+      exit_fun( "ERROR pthread_cond_signal" );
+      return;
+    }
+    //start_meas(&ru->ofdm_demod_wakeup_stats);
   
-  pthread_mutex_unlock( &proc->mutex_fep );
-
-  // call second slot in this symbol
-  nr_fep0(ru, 1);
+    pthread_mutex_unlock( &proc->mutex_fep[aid] );
+  }
+  // call first antenna in this thread
+  nr_fep0(ru, 0);
 
   start_meas(&ru->ofdm_demod_wait_stats);
-  wait_on_busy_condition(&proc->mutex_fep,&proc->cond_fep,&proc->instance_cnt_fep,"nr_feprx thread");  
+  for (int aid=0;aid<ru->nb_rx-1;aid++)   
+    wait_on_busy_condition(&proc->mutex_fep[aid],&proc->cond_fep[aid],&proc->instance_cnt_fep[aid],"nr_feprx thread");  
   stop_meas(&ru->ofdm_demod_wait_stats);
   if(opp_enabled == 1 && ru->ofdm_demod_wakeup_stats.p_time>30*3000){
     print_meas_now(&ru->ofdm_demod_wakeup_stats,"fep wakeup",stderr);
@@ -700,3 +696,135 @@ void nr_fep_full(RU_t *ru, int slot) {
   
   
 }
+
+
+void nr_feptx(void *arg) {
+
+  feptx_cmd_t *feptx = (feptx_cmd_t *)arg;
+
+  RU_t *ru    = feptx->ru;
+  int  slot  = feptx->slot;
+  int  aa    = feptx->aid;
+  NR_DL_FRAME_PARMS  *fp    = ru->nr_frame_parms;
+
+  int txdataF_offset = (slot*fp->samples_per_slot_wCP);
+      ////////////precoding////////////
+  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC+feptx->aid , 1);
+      
+  if (aa==0) start_meas(&ru->precoding_stats);
+
+  if (ru->do_precoding == 1) {
+     for(int i=0; i<ru->nb_log_antennas; ++i) {
+       memcpy((void*) &ru->common.beam_id[i][slot*fp->symbols_per_slot],
+              (void*) &ru->gNB_list[0]->common_vars.beam_id[i][slot*fp->symbols_per_slot],
+              (fp->symbols_per_slot)*sizeof(uint8_t));
+      }
+  }
+
+  if (ru->nb_tx == 1 && ru->nb_log_antennas == 1) {
+     memcpy((void*)&ru->common.txdataF_BF[0][0],
+            (void*)&ru->gNB_list[0]->common_vars.txdataF[0][txdataF_offset],
+            (fp->samples_per_slot_wCP)*sizeof(int32_t));
+  }
+  else if (ru->do_precoding == 0) {
+     int gNB_tx = ru->gNB_list[0]->frame_parms.nb_antennas_tx;
+     memcpy((void*)&ru->common.txdataF_BF[aa][0],
+            (void*)&ru->gNB_list[0]->common_vars.txdataF[aa%gNB_tx][txdataF_offset],
+            (fp->samples_per_slot_wCP)*sizeof(int32_t));
+  }
+  else {
+     int32_t ***bw  = ru->beam_weights[0];
+     for(int i=0; i<fp->symbols_per_slot; ++i){
+       nr_beam_precoding(ru->gNB_list[0]->common_vars.txdataF,
+                         ru->common.txdataF_BF,
+                         fp,
+                         bw,
+                         slot,
+                         i,
+                         aa,
+                         ru->nb_log_antennas,
+                         txdataF_offset);//here
+     }
+  }
+  if (aa==0) stop_meas(&ru->precoding_stats);
+  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC+feptx->aid , 0);
+
+      ////////////FEPTX////////////
+  if (aa==0) start_meas(&ru->ofdm_mod_stats);
+  nr_feptx0(ru,slot,0,fp->symbols_per_slot,aa);
+  if (aa==0) stop_meas(&ru->ofdm_mod_stats);
+}
+void nr_feptx_tp(RU_t *ru, int frame_tx, int slot) {
+
+  nfapi_nr_config_request_scf_t *cfg = &ru->gNB_list[0]->gNB_config;
+  int nbfeptx=0;
+  if (nr_slot_select(cfg,frame_tx,slot) == NR_UPLINK_SLOT) return;
+  for (int aa=0; aa<ru->nb_tx; aa++) memset(ru->common.txdataF[aa],0,ru->nr_frame_parms->samples_per_slot_wCP*sizeof(int32_t));
+
+  if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM, 1 );
+  start_meas(&ru->ofdm_total_stats);
+  for (int aid=0;aid<ru->nb_tx;aid++) {
+       notifiedFIFO_elt_t *req=newNotifiedFIFO_elt(sizeof(feptx_cmd_t), 2000 + aid,ru->respfeptx,nr_feptx);
+       feptx_cmd_t *feptx_cmd=(feptx_cmd_t*)NotifiedFifoData(req);       
+       feptx_cmd->aid          = aid;
+       feptx_cmd->ru           = ru;
+       feptx_cmd->slot         = slot;
+       pushTpool(ru->threadPool,req);
+       nbfeptx++;
+  }
+  while (nbfeptx>0) {
+    notifiedFIFO_elt_t *req=pullTpool(ru->respfeptx, ru->threadPool);
+    delNotifiedFIFO_elt(req);
+    nbfeptx--;
+  }
+  stop_meas(&ru->ofdm_total_stats);
+  if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM, 0 );
+}
+
+void nr_fep(void* arg) {
+	
+  feprx_cmd_t *feprx_cmd = (feprx_cmd_t *)arg;
+
+  RU_t *ru         = feprx_cmd->ru;
+  int aid          = feprx_cmd->aid;
+  int tti_rx       = feprx_cmd->slot;
+
+  NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
+  
+  LOG_D(PHY,"In nr_fep for aid %d, slot = %d\n", aid, tti_rx);
+
+  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX+aid, 1);
+
+  int offset = (tti_rx&3) * fp->symbols_per_slot * fp->ofdm_symbol_size;
+  for (int l = 0; l < fp->symbols_per_slot; l++) 
+      nr_slot_fep_ul(fp,
+                     ru->common.rxdata[aid],
+                     &ru->common.rxdataF[aid][offset],
+                     l,
+                     tti_rx,
+                     ru->N_TA_offset);
+  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX+aid, 0);
+}
+void nr_fep_tp(RU_t *ru, int slot) {
+
+  int nbfeprx=0;
+  if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX, 1 );
+  start_meas(&ru->ofdm_demod_stats);
+  for (int aid=0;aid<ru->nb_rx;aid++) {
+       notifiedFIFO_elt_t *req=newNotifiedFIFO_elt(sizeof(feprx_cmd_t), 1000 + aid,ru->respfeprx,nr_fep);
+       feprx_cmd_t *feprx_cmd=(feprx_cmd_t*)NotifiedFifoData(req);       
+       feprx_cmd->aid          = aid;
+       feprx_cmd->ru           = ru;
+       feprx_cmd->slot         = ru->proc.tti_rx;
+       pushTpool(ru->threadPool,req);
+       nbfeprx++;
+  }
+  while (nbfeprx>0) {
+    notifiedFIFO_elt_t *req=pullTpool(ru->respfeprx, ru->threadPool);
+    delNotifiedFIFO_elt(req);
+    nbfeprx--;
+  }
+  stop_meas(&ru->ofdm_demod_stats);
+  if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX, 0 );
+}
+
diff --git a/openair1/SCHED_NR/sched_nr.h b/openair1/SCHED_NR/sched_nr.h
index 2124397c47..cfd911b36b 100644
--- a/openair1/SCHED_NR/sched_nr.h
+++ b/openair1/SCHED_NR/sched_nr.h
@@ -52,6 +52,8 @@ void nr_feptx_prec_control(RU_t *ru,int frame,int tti_tx);
 void nr_init_feprx_thread(RU_t *ru);
 void nr_fep_full(RU_t *ru, int slot);
 void nr_fep_full_2thread(RU_t *ru, int slot);
+void nr_fep_tp(RU_t *ru, int slot);
+void nr_feptx_tp(RU_t *ru, int frame_tx, int slot);
 void feptx_prec(RU_t *ru,int frame_tx,int tti_tx);
 int nr_phy_init_RU(RU_t *ru);
 void nr_phy_free_RU(RU_t *ru);
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index 79b0c84ac3..f91537ba31 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -395,17 +395,26 @@ void *trx_eth_write_udp_cmd(void *arg) {
       
 int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, void *buff, int aid, int nsamps, int flags) {	
 
+#ifdef USE_TPOOL
     union udpTXReqUnion id = {.s={(uint64_t)timestamp,aid,nsamps,0}};
     notifiedFIFO_elt_t *req=newNotifiedFIFO_elt(sizeof(udpTXelem_t), id.p, device->respudpTX, trx_eth_write_udp_cmd);
     udpTXelem_t * udptxelem=(udpTXelem_t *) NotifiedFifoData(req);
-
+#else
+    udpTXelem_t udptxelem0;
+    udpTXelem_t *udptxelem = &udptxelem0;
+#endif
     udptxelem->device = device;
     udptxelem->timestamp = timestamp;
     udptxelem->buff = buff;
     udptxelem->aid = aid;
     udptxelem->nsamps = nsamps;
     udptxelem->flags = flags;
+#ifdef USE_TPOOL    
     pushTpool(device->threadPool,req);
+#else
+    trx_eth_write_udp_cmd(udptxelem); 
+#endif
+
 }
 extern int oai_exit;
 
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
index dc80c8dcb4..fbe9aed34b 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
@@ -67,7 +67,7 @@ int trx_eth_start(openair0_device *device)
        eth->num_fd = 1; //max(device->openair0_cfg->rx_num_channels,device->openair0_cfg->tx_num_channels); 
        printf("Creating %d UDP threads ...\n",device->openair0_cfg->rx_num_channels);
        udp_read_t *u[device->openair0_cfg->rx_num_channels];
-       for (int i=0;i<device->openair0_cfg->rx_num_channels;i++) {
+       for (int i=0;i<(device->openair0_cfg->rx_num_channels);i++) {
           u[i] = malloc(sizeof(udp_read_t));
           u[i]->thread_id=i;
           u[i]->device = device;

From 29f84b815e254af1ccc01d4a8db36a36b69ca813 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Mon, 30 May 2022 10:35:04 +0200
Subject: [PATCH 11/28] commit before merge

---
 executables/nr-ru.c                           | 2 +-
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c | 8 +++++---
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index d14b3f1a88..46e830199d 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -285,7 +285,7 @@ void fh_if5_south_out(RU_t *ru, int frame, int slot, uint64_t timestamp) {
 			       ru->nr_frame_parms->get_samples_per_slot(slot,ru->nr_frame_parms),
 			       0); 
   stop_meas(&ru->tx_fhaul);
-
+  LOG_D(PHY,"IF5 TX %d.%d\n",frame,slot);
 }
 
 // southbound IF4p5 fronthaul
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index dcb23b5970..e767b64c02 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -334,9 +334,9 @@ int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, voi
 
   }
   openair0_timestamp TS = timestamp + fhstate->TS0;
-  TS = 6*device->sampling_rate_ratio_d*(TS/device->sampling_rate_ratio_n);
+  TS = (6*device->sampling_rate_ratio_d*TS)/device->sampling_rate_ratio_n;
   TS -= device->txrx_offset; 
-  int TSinc = 6*256*device->sampling_rate_ratio_d/device->sampling_rate_ratio_n;
+  int TSinc = (6*256*device->sampling_rate_ratio_d)/device->sampling_rate_ratio_n;
   for (int offset=0;offset<nsamps;offset+=256,TS+=TSinc) {
     // OAI modified SEQ_ID (4 bytes)
     for (int aid=0;aid<ntx;aid++) {
@@ -384,6 +384,7 @@ int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, voi
       }
     }
   }      
+  LOG_D(PHY,"Wrote %d samples @ %llu\n",nsamps,timestamp);
   return (bytes_sent-APP_HEADER_SIZE_BYTES)>>2;
 }
       
@@ -408,7 +409,7 @@ void *udp_read_thread(void *arg) {
       aid = *(uint16_t*)(&buffer[ECPRICOMMON_BYTES]);
       TS  = *(openair0_timestamp *)(&buffer[ECPRICOMMON_BYTES+ECPRIPCID_BYTES]);   
       // convert TS to samples, /6 for AW2S @ 30.72 Ms/s, this is converted for other sample rates in OAI application
-      TS = device->sampling_rate_ratio_n*(TS/(device->sampling_rate_ratio_d*6));
+      TS = (device->sampling_rate_ratio_n*TS)/(device->sampling_rate_ratio_d*6);
       if ((int)count <= 0)  continue;
       AssertFatal(aid < 8,"Cannot handle more than 8 antennas, got aid %d\n",aid);
       fhstate->r[aid]=1;
@@ -448,6 +449,7 @@ int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uin
     for (int i=1;i<device->openair0_cfg->rx_num_channels;i++) min_TS = min(min_TS,fhstate->TS[i]);
   }
 
+  LOG_D(PHY,"Read %d samples @ %llu\n",nsamps,fhstate->TS_read);
   *timestamp = fhstate->TS_read;
   fhstate->TS_read = prev_read_TS + nsamps;
   return (nsamps);

From c353d47329f258fc1b860918bacc20856f53ff68 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <Raymond Knopp>
Date: Mon, 30 May 2022 11:48:32 +0200
Subject: [PATCH 12/28] removed CBPF rule regarding CPU selection

---
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index f91537ba31..6fa1f0c817 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -155,7 +155,6 @@ int eth_socket_init_udp(openair0_device *device) {
 #ifdef SO_ATTACH_REUSEPORT_EBPF*/    
     struct sock_filter code[]={
               { BPF_LD  | BPF_W | BPF_ABS, 0, 0, SKF_AD_OFF + SKF_AD_CPU }, // A = #cpu
-              { BPF_ALU | BPF_MOD | BPF_K, 0, 0, eth->num_fd},     // A = A % group_size
               { BPF_RET | BPF_A, 0, 0, 0 },                                 // return A
     };
     struct sock_fprog bpf = {

From 6236fe8e775cea0dcb75da18ad85b02a94018dad Mon Sep 17 00:00:00 2001
From: Raymond Knopp <Raymond Knopp>
Date: Sat, 11 Jun 2022 08:08:03 +0200
Subject: [PATCH 13/28] changes for thread-core pinning

---
 executables/nr-gnb.c                          |  6 ++++-
 executables/nr-ru.c                           | 25 ++++++++++++-------
 openair1/PHY/defs_RU.h                        |  7 +++++-
 openair2/ENB_APP/enb_paramdef.h               | 12 +++++++++
 targets/ARCH/COMMON/common_lib.h              |  2 ++
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c |  9 ++++---
 .../ETHERNET/USERSPACE/LIB/ethernet_lib.c     | 15 ++++++-----
 targets/RT/USER/lte-ru.c                      |  2 ++
 8 files changed, 57 insertions(+), 21 deletions(-)

diff --git a/executables/nr-gnb.c b/executables/nr-gnb.c
index 8ea7f16712..cbd59b59ec 100644
--- a/executables/nr-gnb.c
+++ b/executables/nr-gnb.c
@@ -375,6 +375,8 @@ void *tx_reorder_thread(void* param) {
   resL1Reserve=pullTpool(gNB->L1_tx_out, gNB->threadPool);
   int next_tx_slot=((processingData_L1tx_t *)NotifiedFifoData(resL1Reserve))->slot;
   
+  LOG_I(PHY,"tx_reorder_thread started\n");
+  
   while (!oai_exit) {
     notifiedFIFO_elt_t *resL1;
     if (resL1Reserve) {
@@ -433,6 +435,7 @@ void init_gNB_Tpool(int inst) {
     s_offset += 3;
   }
   if (getenv("noThreads")) strcpy(pool, "n");
+  LOG_I(PHY,"Initializing gNB ThreadPool with %s\n",pool);
   initTpool(pool, gNB->threadPool, cpumeas(CPUMEAS_GETSTATE));
   // ULSCH decoder result FIFO
   gNB->respDecode = (notifiedFIFO_t*) malloc(sizeof(notifiedFIFO_t));
@@ -465,7 +468,8 @@ void init_gNB_Tpool(int inst) {
   if (!get_softmodem_params()->emulate_l1) 
      threadCreate(&proc->L1_stats_thread,nrL1_stats_thread,(void*)gNB,"L1_stats",-1,OAI_PRIORITY_RT_LOW);
 
-  threadCreate(&proc->pthread_tx_reorder, tx_reorder_thread, (void *)gNB, "thread_tx_reorder", -1, OAI_PRIORITY_RT_MAX);
+  LOG_I(PHY,"Creating thread for TX reordering and dispatching to RU\n");
+  threadCreate(&proc->pthread_tx_reorder, tx_reorder_thread, (void *)gNB, "thread_tx_reorder", gNB->RU_list[0]->tpcores[1], OAI_PRIORITY_RT_MAX);
 
 }
 
diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index d73e7cade8..9449d96650 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -64,7 +64,7 @@ unsigned short config_frames[4] = {2,9,11,13};
 static int DEFBANDS[] = {7};
 static int DEFENBS[] = {0};
 static int DEFBFW[] = {0x00007fff};
-
+static int DEFRUTPCORES[] = {2,4,6,8};
 //static int DEFNRBANDS[] = {7};
 //static int DEFGNBS[] = {0};
 
@@ -279,6 +279,7 @@ void fh_if5_south_out(RU_t *ru, int frame, int slot, uint64_t timestamp) {
   if (ru == RC.ru[0]) VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TST, ru->proc.timestamp_tx&0xffffffff );
   int offset = ru->nr_frame_parms->get_samples_slot_timestamp(slot,ru->nr_frame_parms,0);
   start_meas(&ru->tx_fhaul);
+ /* 
   for (int aid=0;aid<ru->nb_tx;aid++)  
     ru->ifdevice.trx_write_func2(&ru->ifdevice,
     		                 timestamp,
@@ -286,6 +287,7 @@ void fh_if5_south_out(RU_t *ru, int frame, int slot, uint64_t timestamp) {
 				 aid,
 			         ru->nr_frame_parms->get_samples_per_slot(slot,ru->nr_frame_parms),
 			         0); 
+  */
   stop_meas(&ru->tx_fhaul);
   LOG_D(PHY,"IF5 TX %d.%d\n",frame,slot);
 }
@@ -338,7 +340,8 @@ void fh_if5_south_in(RU_t *ru,
   }
 
   stop_meas(&ru->rx_fhaul);
-  LOG_D(PHY,"IF5 %d.%d => RX %d.%d first_rx %d: time %f\n",*frame,*tti,proc->frame_rx,proc->tti_rx,proc->first_rx,ru->rx_fhaul.p_time/(cpu_freq_GHz*1000.0));
+  double fhtime = ru->rx_fhaul.p_time/(cpu_freq_GHz*1000.0);
+  if (fhtime > 800) LOG_W(PHY,"IF5 %d.%d => RX %d.%d first_rx %d: time %f\n",*frame,*tti,proc->frame_rx,proc->tti_rx,proc->first_rx,ru->rx_fhaul.p_time/(cpu_freq_GHz*1000.0));
   VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, proc->timestamp_rx&0xffffffff );
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_RECV_IF5, 0 );
 
@@ -1555,7 +1558,7 @@ void init_RU_proc(RU_t *ru) {
 
   pthread_mutex_init( &proc->mutex_emulateRF,NULL);
   pthread_cond_init( &proc->cond_emulateRF, NULL);
-  threadCreate( &proc->pthread_FH, ru_thread, (void *)ru, "thread_FH", -1, OAI_PRIORITY_RT_MAX );
+  threadCreate( &proc->pthread_FH, ru_thread, (void *)ru, "ru_thread", ru->tpcores[0], OAI_PRIORITY_RT_MAX );
 
   if(emulate_rf)
     threadCreate( &proc->pthread_emulateRF, emulatedRF_thread, (void *)proc, "emulateRF", -1, OAI_PRIORITY_RT );
@@ -1872,7 +1875,7 @@ void set_function_spec_param(RU_t *ru) {
 
     case REMOTE_IF5: // the remote unit is IF5 RRU
       ru->do_prach               = 0;
-      ru->txfh_in_fep            = 1;
+      ru->txfh_in_fep            = 0;
 #ifdef USE_TPOOL
       ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_tp   : nr_fep_full;     // this is frequency-shift + DFTs
       ru->feptx_prec             = (get_thread_worker_conf() == WORKER_ENABLE) ? NULL                  : nr_feptx_prec;          // need to do transmit Precoding + IDFTs
@@ -2020,16 +2023,16 @@ void init_NR_RU(char *rf_config_file) {
     set_function_spec_param(ru);
     LOG_I(PHY,"Starting ru_thread %d\n",ru_id);
     init_RU_proc(ru);
-    int threadCnt = ru->nb_rx+ru->nb_tx;
+    int threadCnt = ru->num_tpcores;
     if (threadCnt < 2) LOG_E(PHY,"Number of threads for gNB should be more than 1. Allocated only %d\n",threadCnt);
+    else LOG_I(PHY,"RU Thread pool size %d\n",threadCnt);
     char pool[80];
-    sprintf(pool,"-1");
-    int s_offset = 0;
+    int s_offset = sprintf(pool,"%d",ru->tpcores[0]);
     for (int icpu=1; icpu<threadCnt; icpu++) {
-       sprintf(pool+2+s_offset,",-1");
-       s_offset += 3;
+       s_offset+=sprintf(pool+s_offset,",%d",ru->tpcores[icpu]);
     }
 #ifdef USE_TPOOL    
+    LOG_I(PHY,"RU thread-pool core string %s\n",pool);
     ru->threadPool = (tpool_t*)malloc(sizeof(tpool_t));
     initTpool(pool, ru->threadPool, cpumeas(CPUMEAS_GETSTATE));
     // FEP RX result FIFO
@@ -2211,6 +2214,10 @@ static void NRRCconfig_RU(void) {
       RC.ru[j]->openair0_cfg.nr_band              = RC.ru[j]->band[0];
       RC.ru[j]->openair0_cfg.nr_scs_for_raster    = *(RUParamList.paramarray[j][RU_NR_SCS_FOR_RASTER].iptr);
       printf("[RU %d] Setting nr_flag %d, nr_band %d, nr_scs_for_raster %d\n",j,RC.ru[j]->openair0_cfg.nr_flag,RC.ru[j]->openair0_cfg.nr_band,RC.ru[j]->openair0_cfg.nr_scs_for_raster);
+      RC.ru[j]->openair0_cfg.fh_cores[0]          = *(RUParamList.paramarray[j][RU_RXFH_CORE_ID].iptr);
+      RC.ru[j]->num_tpcores                       = *(RUParamList.paramarray[j][RU_NUM_TP_CORES].iptr);
+      AssertFatal(RC.ru[j]->num_tpcores <= RUParamList.paramarray[j][RU_TP_CORES].numelt, "Number of TP cores should be <=16\n");
+      for (i=0; i<RC.ru[j]->num_tpcores; i++) RC.ru[j]->tpcores[i] = RUParamList.paramarray[j][RU_TP_CORES].iptr[i];
       if (config_isparamset(RUParamList.paramarray[j], RU_BF_WEIGHTS_LIST_IDX)) {
         RC.ru[j]->nb_bfw = RUParamList.paramarray[j][RU_BF_WEIGHTS_LIST_IDX].numelt;
 
diff --git a/openair1/PHY/defs_RU.h b/openair1/PHY/defs_RU.h
index 20505ca6f4..688ebf3a88 100644
--- a/openair1/PHY/defs_RU.h
+++ b/openair1/PHY/defs_RU.h
@@ -668,7 +668,12 @@ typedef struct RU_t_s {
   notifiedFIFO_t *respfeprx;
   /// to signal end of feptx
   notifiedFIFO_t *respfeptx;
-
+  /// core id for RX fhaul (IF5 ECPRI)
+  int rxfh_core_id;
+  /// list of cores for RU ThreadPool
+  int tpcores[16];
+  /// number of cores for RU ThreadPool
+  int num_tpcores;
 } RU_t;
 
 
diff --git a/openair2/ENB_APP/enb_paramdef.h b/openair2/ENB_APP/enb_paramdef.h
index e6e97069fa..b972a5b120 100644
--- a/openair2/ENB_APP/enb_paramdef.h
+++ b/openair2/ENB_APP/enb_paramdef.h
@@ -103,11 +103,17 @@ typedef enum {
 #define CONFIG_STRING_RU_SL_AHEAD                 "sl_ahead"
 #define CONFIG_STRING_RU_NR_FLAG                  "nr_flag"
 #define CONFIG_STRING_RU_NR_SCS_FOR_RASTER        "nr_scs_for_raster"
+#define CONFIG_STRING_RU_RXFH_CORE_ID             "rxfh_core_id"
+#define CONFIG_STRING_RU_TP_CORES                 "tp_cores"
+#define CONFIG_STRING_RU_NUM_TP_CORES             "num_tp_cores"
 
 #define HLP_RU_SF_AHEAD "LTE TX processing advance"
 #define HLP_RU_SL_AHEAD "NR TX processing advance"
 #define HLP_RU_NR_FLAG "Use NR numerology (for AW2SORI)"
 #define HLP_RU_NR_SCS_FOR_RASTER "NR SCS for raster (for AW2SORI)"
+#define HLP_RU_RXFH_CORE_ID "Core ID for RX Fronthaul thread (ECPRI IF5)"
+#define HLP_RU_TP_CORES "List of cores for RU ThreadPool"
+#define HLP_RU_NUM_TP_CORES "Number of cores for RU ThreadPool"
 
 #define RU_LOCAL_IF_NAME_IDX          0
 #define RU_LOCAL_ADDRESS_IDX          1
@@ -142,6 +148,9 @@ typedef enum {
 #define RU_SL_AHEAD                   30 
 #define RU_NR_FLAG                    31 
 #define RU_NR_SCS_FOR_RASTER          32
+#define RU_RXFH_CORE_ID               33
+#define RU_TP_CORES                   34
+#define RU_NUM_TP_CORES               35
 /*-----------------------------------------------------------------------------------------------------------------------------------------*/
 /*                                            RU configuration parameters                                                                  */
 /*   optname                                   helpstr   paramflags    XXXptr          defXXXval                   type      numelt        */
@@ -180,6 +189,9 @@ typedef enum {
     {CONFIG_STRING_RU_SL_AHEAD,          HLP_RU_SL_AHEAD,      0,       iptr:NULL,       defintval:6,             TYPE_INT,         0}, \
     {CONFIG_STRING_RU_NR_FLAG,           HLP_RU_NR_FLAG,       0,       iptr:NULL,       defintval:0,             TYPE_INT,         0}, \
     {CONFIG_STRING_RU_NR_SCS_FOR_RASTER, HLP_RU_NR_SCS_FOR_RASTER, 0,   iptr:NULL,       defintval:1,             TYPE_INT,         0}, \
+    {CONFIG_STRING_RU_RXFH_CORE_ID, HLP_RU_RXFH_CORE_ID,       0,       uptr:NULL,       defintval:0,             TYPE_UINT,         0}, \
+    {CONFIG_STRING_RU_TP_CORES, HLP_RU_TP_CORES,               0,       uptr:NULL,       defintarrayval:DEFRUTPCORES,  TYPE_INTARRAY,    8}, \
+    {CONFIG_STRING_RU_NUM_TP_CORES, HLP_RU_NUM_TP_CORES,       0,       uptr:NULL,       defintval:4,             TYPE_UINT,         0}, \
   }
 
 /*---------------------------------------------------------------------------------------------------------------------------------------*/
diff --git a/targets/ARCH/COMMON/common_lib.h b/targets/ARCH/COMMON/common_lib.h
index d8a9d11c8a..b2a0517d12 100644
--- a/targets/ARCH/COMMON/common_lib.h
+++ b/targets/ARCH/COMMON/common_lib.h
@@ -254,6 +254,8 @@ typedef struct {
   int nr_band;
   //! NR scs for raster
   int nr_scs_for_raster;
+  //! Core IDs for RX FH
+  int fh_cores[4];
 } openair0_config_t;
 
 /*! \brief RF mapping */
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index 662b19ba45..ad910e1e3e 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -43,6 +43,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include "common/utils/LOG/vcd_signal_dumper.h"
+#include <sched.h>
 
 #include "common_lib.h"
 #include "ethernet_lib.h"
@@ -148,11 +149,11 @@ int eth_socket_init_udp(openair0_device *device) {
       printf("ETHERNET: Cannot set SO_NO_CHECK option on socket (user %d)",i);
       exit(0);
     }
+#if 0 /*def SO_ATTACH_REUSEPORT_EBPF*/    
     if (setsockopt(eth->sockfdd[i], SOL_SOCKET, SO_REUSEPORT, &enable, sizeof(int))) {
       printf("ETHERNET: Cannot set SO_REUSEPORT option on socket (user %d)",i);
       exit(0);
     }
-#ifdef SO_ATTACH_REUSEPORT_EBPF*/    
     struct sock_filter code[]={
               { BPF_LD  | BPF_W | BPF_ABS, 0, 0, SKF_AD_OFF + SKF_AD_CPU }, // A = #cpu
               { BPF_RET | BPF_A, 0, 0, 0 },                                 // return A
@@ -451,8 +452,8 @@ void *udp_read_thread(void *arg) {
       // zero-copy and corrected the header component.   	 
       memcpy((void*)(device->openair0_cfg->rxbase[aid]+offset),
              (void*)&buffer[APP_HEADER_SIZE_BYTES],
-             count-APP_HEADER_SIZE_BYTES); 
-      LOG_D(PHY,"thread_id %d, aid %d, TS %llu, TS0 %llu, offset %d\n",u->thread_id,aid,(unsigned long long)TS,fhstate->TS0,offset);
+             count-APP_HEADER_SIZE_BYTES);
+      LOG_D(PHY,"thread_id %d (%d), aid %d, TS %llu, TS0 %llu, offset %d\n",u->thread_id,sched_getcpu(),aid,(unsigned long long)TS,fhstate->TS0,offset);
     }
     sleep(1);
   }
@@ -473,7 +474,7 @@ int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uin
   // poll/sleep until we accumulated enough samples on each antenna port
   int count=0;
   while (fhstate->first_read == 1 && min_TS < (fhstate->TS0+prev_read_TS + nsamps)) {
-    usleep(100);
+    usleep(50);
     min_TS = fhstate->TS[0];
     for (int i=1;i<device->openair0_cfg->rx_num_channels;i++) min_TS = min(min_TS,fhstate->TS[i]);
     count++;
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
index fbe9aed34b..4170cb1ac3 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
@@ -65,13 +65,13 @@ int trx_eth_start(openair0_device *device)
        AssertFatal(device->thirdparty_init(device) == 0, "third-party init failed\n");
        device->openair0_cfg->samples_per_packet = 256;
        eth->num_fd = 1; //max(device->openair0_cfg->rx_num_channels,device->openair0_cfg->tx_num_channels); 
-       printf("Creating %d UDP threads ...\n",device->openair0_cfg->rx_num_channels);
-       udp_read_t *u[device->openair0_cfg->rx_num_channels];
-       for (int i=0;i<(device->openair0_cfg->rx_num_channels);i++) {
+       udp_read_t *u[2];
+       for (int i=0;i<eth->num_fd;i++) {
           u[i] = malloc(sizeof(udp_read_t));
           u[i]->thread_id=i;
           u[i]->device = device;
-          threadCreate(&u[i]->pthread,udp_read_thread,u[i],"udp read thread",-1,OAI_PRIORITY_RT_MAX);
+	  printf("UDP Read Thread %d on core %d\n",i,device->openair0_cfg->fh_cores[i]);
+          threadCreate(&u[i]->pthread,udp_read_thread,u[i],"udp read thread",device->openair0_cfg->fh_cores[i],OAI_PRIORITY_RT_MAX);
        }
        device->sampling_rate_ratio_n=1;
        device->sampling_rate_ratio_d=1;
@@ -112,6 +112,7 @@ int trx_eth_start(openair0_device *device)
 	  }
           else AssertFatal(1==0,"num_rb_dl %d not ok with ECPRI\n",device->openair0_cfg->num_rb_dl);
        }
+#ifdef USE_TX_TPOOL       
        int threadCnt = device->openair0_cfg->tx_num_channels;
        if (threadCnt < 2) LOG_E(PHY,"Number of threads for gNB should be more than 1. Allocated only %d\n",threadCnt);
        char pool[80];
@@ -126,6 +127,7 @@ int trx_eth_start(openair0_device *device)
        // ULSCH decoder result FIFO
        device->respudpTX = (notifiedFIFO_t*) malloc(sizeof(notifiedFIFO_t));
        initNotifiedFIFO(device->respudpTX);
+#endif
    }
    /* initialize socket */
     if (eth->flags == ETH_RAW_MODE) {
@@ -211,6 +213,7 @@ int trx_eth_start(openair0_device *device)
     if(ethernet_tune (device, RCV_BUF_SIZE,67108864)!=0)  return -1;
     if(ethernet_tune (device, KERNEL_SND_BUF_MAX_SIZE, 67108864)!=0)  return -1;
     if(ethernet_tune (device, KERNEL_RCV_BUF_MAX_SIZE, 67108864)!=0)  return -1;
+    if(ethernet_tune (device, TX_Q_LEN, 10000)!=0)  return -1;
 
 
     return 0;
@@ -445,7 +448,7 @@ int ethernet_tune(openair0_device *device,
       }
       break;
     case KERNEL_SND_BUF_MAX_SIZE:
-      ret=snprintf(system_cmd,sizeof(system_cmd),"sysctl -w net.core.wmem_max=%d;sysctl -w net.core.wmem_default=%d;sysctl -w net.core.netdev_max_backlog=416384;sysctl -w net.core.optmem_max=524288;",value,value);
+      ret=snprintf(system_cmd,sizeof(system_cmd),"sysctl -w net.core.wmem_max=%d;sysctl -w net.core.wmem_default=%d;sysctl -w net.core.netdev_max_backlog=5000;sysctl -w net.core.optmem_max=524288;",value,value);
       if (ret > 0) {
 	ret=system(system_cmd);
 	if (ret == -1) {
@@ -487,7 +490,7 @@ int transport_init(openair0_device *device,
         eth->compression = ALAW_COMPRESS;
     }
 
-    eth->num_fd = max(openair0_cfg->rx_num_channels,openair0_cfg->tx_num_channels);
+    eth->num_fd = 1;
 
     printf("[ETHERNET]: Initializing openair0_device for %s ...\n", ((device->host_type == RAU_HOST) ? "RAU": "RRU"));
     printf("[ETHERNET]: num_fd %d\n",eth->num_fd);
diff --git a/targets/RT/USER/lte-ru.c b/targets/RT/USER/lte-ru.c
index 571551cee9..30919ec6a4 100644
--- a/targets/RT/USER/lte-ru.c
+++ b/targets/RT/USER/lte-ru.c
@@ -66,6 +66,8 @@
 static int DEFBANDS[] = {7};
 static int DEFENBS[] = {0};
 static int DEFBFW[] = {0x00007fff};
+static int DEFRUTPCORES[] = {2,4,6,8};
+
 
 #include "ENB_APP/enb_paramdef.h"
 #include "common/config/config_userapi.h"

From cecb9568ad4c60e5e2b78676e8d1fd1e0e5da217 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Mon, 1 Aug 2022 08:51:29 +0200
Subject: [PATCH 14/28] warning removal

---
 executables/nr-ru.c                           |  6 +++---
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c | 19 +++++++++++--------
 2 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index 5372f4cb05..facb54b4bf 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -283,7 +283,7 @@ void fh_if5_south_out(RU_t *ru, int frame, int slot, uint64_t timestamp) {
   struct timespec txmeas;
   clock_gettime(CLOCK_MONOTONIC, &txmeas);
   LOG_D(PHY,"IF5 TX %d.%d, TS %llu, buffs[0] %p, buffs[1] %p ener0 %f dB, tx start %d\n",frame,slot,(unsigned long long)timestamp,buffs[0],buffs[1],
-  10*log10((double)signal_energy(buffs[0],ru->nr_frame_parms->get_samples_per_slot(slot,ru->nr_frame_parms))),txmeas.tv_nsec);
+  10*log10((double)signal_energy(buffs[0],ru->nr_frame_parms->get_samples_per_slot(slot,ru->nr_frame_parms))),(int)txmeas.tv_nsec);
   ru->ifdevice.trx_write_func2(&ru->ifdevice,
   		               timestamp,
                                buffs,
@@ -345,8 +345,8 @@ void fh_if5_south_in(RU_t *ru,
   struct timespec rxmeas;
   clock_gettime(CLOCK_MONOTONIC, &rxmeas);
   double fhtime = ru->rx_fhaul.p_time/(cpu_freq_GHz*1000.0);
-  if (fhtime > 800) LOG_W(PHY,"IF5 %d.%d => RX %d.%d first_rx %d: time %f, rxstart %d\n",*frame,*tti,proc->frame_rx,proc->tti_rx,proc->first_rx,ru->rx_fhaul.p_time/(cpu_freq_GHz*1000.0),rxmeas.tv_nsec);
-  else LOG_D(PHY,"IF5 %d.%d => RX %d.%d first_rx %d: time %f, rxstart %d\n",*frame,*tti,proc->frame_rx,proc->tti_rx,proc->first_rx,ru->rx_fhaul.p_time/(cpu_freq_GHz*1000.0),rxmeas.tv_nsec);
+  if (fhtime > 800) LOG_W(PHY,"IF5 %d.%d => RX %d.%d first_rx %d: time %f, rxstart %d\n",*frame,*tti,proc->frame_rx,proc->tti_rx,proc->first_rx,ru->rx_fhaul.p_time/(cpu_freq_GHz*1000.0),(int)rxmeas.tv_nsec);
+  else LOG_D(PHY,"IF5 %d.%d => RX %d.%d first_rx %d: time %f, rxstart %d\n",*frame,*tti,proc->frame_rx,proc->tti_rx,proc->first_rx,ru->rx_fhaul.p_time/(cpu_freq_GHz*1000.0),(int)rxmeas.tv_nsec);
   VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, proc->timestamp_rx&0xffffffff );
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_RECV_IF5, 0 );
 
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index ebc7e22c93..54325c36e2 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -311,7 +311,7 @@ void *trx_eth_write_udp_cmd(udpTXelem_t *udpTXelem) {
   uint64_t TS_advance=0;
   if (timestamp > last_rxTS) TS_advance = timestamp - last_rxTS;
 
-  LOG_D(PHY,"Starting TX FH for TS %llu absslot %d(%d) last_rxTS %llu TS_advance %llu samples\n",timestamp,timestamp/nsamps,(timestamp/nsamps)%20,last_rxTS,TS_advance);
+  LOG_D(PHY,"Starting TX FH for TS %llu absslot %llu(%llu) last_rxTS %llu TS_advance %llu samples\n",(unsigned long long)timestamp,(unsigned long long)timestamp/nsamps,((unsigned long long)timestamp/nsamps)%20,(unsigned long long)last_rxTS,(unsigned long long)TS_advance);
   void *buff2;
 #if defined(__x86_64) || defined(__i386__)
 #ifdef __AVX2__
@@ -343,7 +343,7 @@ void *trx_eth_write_udp_cmd(udpTXelem_t *udpTXelem) {
   int TSinc = (6*256*device->sampling_rate_ratio_d)/device->sampling_rate_ratio_n;
   int len=256;
   LOG_D(PHY,"TS %llu (%llu),txrx_offset %d,d %d, n %d, buff[0] %p buff[1] %p\n",
-        (unsigned long long)TS,timestamp,device->txrx_offset,device->sampling_rate_ratio_d,device->sampling_rate_ratio_n,
+        (unsigned long long)TS,(unsigned long long)timestamp,device->txrx_offset,device->sampling_rate_ratio_d,device->sampling_rate_ratio_n,
 	buff[0],buff[1]);
   for (int offset=0;offset<nsamps;offset+=256,TS+=TSinc) {
     // OAI modified SEQ_ID (4 bytes)
@@ -398,6 +398,7 @@ void *trx_eth_write_udp_cmd(udpTXelem_t *udpTXelem) {
     } // aid
   } // offset
   free(buff);  
+  return(NULL);
 }
 
 int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, void **buff, int fd_ind, int nsamps, int flags, int nant) {	
@@ -415,21 +416,22 @@ int trx_eth_write_udp(openair0_device *device, openair0_timestamp timestamp, voi
     udptxelem->nant = nant;
     pushNotifiedFIFO(device->utx[fd_ind]->resp, req);
     LOG_D(PHY,"Pushed to TX FH FIFO, TS %llu, nsamps %d, nant %d buffs[0] %p buffs[1] %p\n",
-          timestamp,nsamps,nant,udptxelem->buff[0],udptxelem->buff[1]);
+          (unsigned long long)timestamp,nsamps,nant,udptxelem->buff[0],udptxelem->buff[1]);
+    return(0);
 }
 extern int oai_exit;
 
 void *udp_write_thread(void *arg) {
 
    udp_ctx_t *utx = (udp_ctx_t *)arg;
-   utx->resp = (notifiedFIFO_elt_t*) malloc(sizeof(notifiedFIFO_elt_t));
+   utx->resp = (notifiedFIFO_t*) malloc(sizeof(notifiedFIFO_elt_t));
    initNotifiedFIFO(utx->resp);
    LOG_D(PHY,"UDP write thread started on core %d\n",sched_getcpu()); 
    reset_meas(&utx->device->tx_fhaul);
    while (oai_exit == 0) {
       notifiedFIFO_elt_t *res = pullNotifiedFIFO(utx->resp);
       udpTXelem_t *udptxelem = (udpTXelem_t *)NotifiedFifoData(res);
-      LOG_D(PHY,"Pulled from TX FH FIFO, TS %llu, nsamps %d, nant %d\n",udptxelem->timestamp,udptxelem->nsamps,udptxelem->nant);
+      LOG_D(PHY,"Pulled from TX FH FIFO, TS %llu, nsamps %d, nant %d\n",(unsigned long long)udptxelem->timestamp,udptxelem->nsamps,udptxelem->nant);
       start_meas(&utx->device->tx_fhaul);
       trx_eth_write_udp_cmd(udptxelem);
       stop_meas(&utx->device->tx_fhaul);
@@ -437,6 +439,7 @@ void *udp_write_thread(void *arg) {
       delNotifiedFIFO_elt(res);
    }
    free(utx->resp);
+   return(NULL);
 }
 
 void *udp_read_thread(void *arg) {
@@ -475,7 +478,7 @@ void *udp_read_thread(void *arg) {
       memcpy((void*)(device->openair0_cfg->rxbase[aid]+offset),
              (void*)&buffer[APP_HEADER_SIZE_BYTES],
              count-APP_HEADER_SIZE_BYTES);
-      LOG_D(PHY,"UDP read thread_id %d (%d), aid %d, TS %llu, TS0 %llu, offset %d\n",u->thread_id,sched_getcpu(),aid,(unsigned long long)TS,fhstate->TS0,offset);
+      LOG_D(PHY,"UDP read thread_id %d (%d), aid %d, TS %llu, TS0 %llu, offset %d\n",(int)u->thread_id,(int)sched_getcpu(),aid,(unsigned long long)TS,(unsigned long long)fhstate->TS0,offset);
     }
     sleep(1);
   }
@@ -505,13 +508,13 @@ int trx_eth_read_udp(openair0_device *device, openair0_timestamp *timestamp, uin
   if (fhstate->first_read == 0) {
      *timestamp = 0;
      fhstate->TS_read = *timestamp+nsamps;
-     LOG_D(PHY,"first read : TS_read %llu, TS %llu state (%d,%d,%d,%d,%d,%d,%d,%d)\n",fhstate->TS_read,*timestamp,
+     LOG_D(PHY,"first read : TS_read %llu, TS %llu state (%d,%d,%d,%d,%d,%d,%d,%d)\n",(unsigned long long)fhstate->TS_read,(unsigned long long)*timestamp,
            fhstate->r[0],fhstate->r[1],fhstate->r[2],fhstate->r[3],fhstate->r[4],fhstate->r[5],fhstate->r[6],fhstate->r[7]);
   }
   else {  
      *timestamp = fhstate->TS_read;
      fhstate->TS_read = prev_read_TS + nsamps;
-     LOG_D(PHY,"TS_read %llu, min_TS %llu, prev_read_TS %llu, nsamps %d, fhstate->TS0+prev_TS+nsamps %llu, wait count %d x 100us\n",fhstate->TS_read,min_TS,prev_read_TS,nsamps,fhstate->TS0+prev_read_TS+nsamps,count);
+     LOG_D(PHY,"TS_read %llu (%llu, %llu), min_TS %llu, prev_read_TS %llu, nsamps %d, fhstate->TS0+prev_TS+nsamps %llu, wait count %d x 100us\n",(unsigned long long)fhstate->TS_read,(unsigned long long)*timestamp/nsamps,((unsigned long long)*timestamp/nsamps)%20,(unsigned long long)min_TS,(unsigned long long)prev_read_TS,nsamps,(unsigned long long)(fhstate->TS0+prev_read_TS+nsamps),count);
   }
   fhstate->first_read = 1;
   return (nsamps);

From 745ef122b802539b6a37bcf6982d82fde3daab81 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Tue, 2 Aug 2022 09:09:07 +0200
Subject: [PATCH 15/28] logging in eth_udp.c to warn about potential missed TX
 opportunities.

---
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index 54325c36e2..c9fc75d387 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -311,7 +311,7 @@ void *trx_eth_write_udp_cmd(udpTXelem_t *udpTXelem) {
   uint64_t TS_advance=0;
   if (timestamp > last_rxTS) TS_advance = timestamp - last_rxTS;
 
-  LOG_D(PHY,"Starting TX FH for TS %llu absslot %llu(%llu) last_rxTS %llu TS_advance %llu samples\n",(unsigned long long)timestamp,(unsigned long long)timestamp/nsamps,((unsigned long long)timestamp/nsamps)%20,(unsigned long long)last_rxTS,(unsigned long long)TS_advance);
+  if (TS_advance < (nsamps/2)) LOG_W(PHY,"Starting TX FH for TS %llu absslot %llu(%llu) last_rxTS %llu TS_advance %llu samples\n",(unsigned long long)timestamp,(unsigned long long)timestamp/nsamps,((unsigned long long)timestamp/nsamps)%20,(unsigned long long)last_rxTS,(unsigned long long)TS_advance);
   void *buff2;
 #if defined(__x86_64) || defined(__i386__)
 #ifdef __AVX2__

From afed0cec346c791881cfc9e6a94462f2f4fea4b2 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Wed, 3 Aug 2022 17:15:49 +0200
Subject: [PATCH 16/28] testing with 20 and 50 MHz 2x2 on Jaguar. Adding simple
 documentation in ethernet.md file.

---
 executables/nr-ru.c                           | 30 +++++++--
 executables/rt_profiling.h                    | 62 +++++++++++++++++++
 openair1/PHY/defs_RU.h                        |  3 +
 openair1/SCHED_NR/nr_ru_procedures.c          |  8 +--
 .../ARCH/ETHERNET/USERSPACE/LIB/ethernet.md   | 51 +++++++++++++++
 5 files changed, 142 insertions(+), 12 deletions(-)
 create mode 100644 executables/rt_profiling.h
 create mode 100644 targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet.md

diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index facb54b4bf..e58b9851df 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -34,6 +34,7 @@
 #include "common/utils/assertions.h"
 #include "common/utils/system.h"
 #include "common/ran_context.h"
+#include "rt_profiling.h"
 
 #include "../../ARCH/COMMON/common_lib.h"
 #include "../../ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h"
@@ -1221,7 +1222,13 @@ void ru_tx_func(void *param) {
   int slot_tx = info->slot_tx;
   int print_frame = 8;
   char filename[40];
+ 
 
+  // note that this will break for 60/120 kHz, to be handled
+  int absslot_tx = info->timestamp_tx/fp->get_samples_per_slot(slot_tx,fp);
+  int absslot_rx = absslot_tx-ru->sl_ahead;
+  int rt_prof_idx = absslot_rx % RT_PROF_DEPTH;
+  clock_gettime(CLOCK_MONOTONIC,&ru->rt_ru_profiling.start_RU_TX[rt_prof_idx]);
   // do TX front-end processing if needed (precoding and/or IDFTs)
   if (ru->feptx_prec) ru->feptx_prec(ru,frame_tx,slot_tx);
 
@@ -1264,6 +1271,11 @@ void ru_tx_func(void *param) {
       }//for (i=0; i<ru->nb_tx; i++)
     }//if(frame_tx == print_frame)
   }//else  emulate_rf
+  clock_gettime(CLOCK_MONOTONIC,&ru->rt_ru_profiling.return_RU_TX[rt_prof_idx]);
+  struct timespec *t0=&ru->rt_ru_profiling.start_RU_TX[rt_prof_idx];
+  struct timespec *t1=&ru->rt_ru_profiling.return_RU_TX[rt_prof_idx];
+
+  LOG_D(PHY,"rt_prof_idx %d : RU_TX time %d\n",rt_prof_idx,(int)(1e9 * (t1->tv_sec - t0->tv_sec) + (t1->tv_nsec-t0->tv_nsec)));
 }
 
 void *ru_thread( void *param ) {
@@ -1424,6 +1436,9 @@ void *ru_thread( void *param ) {
        proc->timestamp_tx += fp->get_samples_per_slot((sl+slidx)%fp->slots_per_frame,fp);
     proc->frame_tx     = (proc->tti_rx > (fp->slots_per_frame-1-(ru->sl_ahead))) ? (proc->frame_rx+1)&1023 : proc->frame_rx;
     proc->tti_tx      = (proc->tti_rx + ru->sl_ahead)%fp->slots_per_frame;
+    int absslot_rx = proc->timestamp_rx/fp->get_samples_per_slot(proc->tti_rx,fp);
+    int rt_prof_idx = absslot_rx % RT_PROF_DEPTH;
+    clock_gettime(CLOCK_MONOTONIC,&ru->rt_ru_profiling.return_RU_south_in[rt_prof_idx]);
     LOG_D(PHY,"AFTER fh_south_in - SFN/SL:%d%d RU->proc[RX:%d.%d TX:%d.%d] RC.gNB[0]:[RX:%d%d TX(SFN):%d]\n",
           frame,slot,
           proc->frame_rx,proc->tti_rx,
@@ -1439,6 +1454,7 @@ void *ru_thread( void *param ) {
     if (slot_type == NR_UPLINK_SLOT || slot_type == NR_MIXED_SLOT) {
       if (ru->feprx) {
         ru->feprx(ru,proc->tti_rx);
+        clock_gettime(CLOCK_MONOTONIC,&ru->rt_ru_profiling.return_RU_feprx[rt_prof_idx]);
         //LOG_M("rxdata.m","rxs",ru->common.rxdata[0],1228800,1,1);
         LOG_D(PHY,"RU proc: frame_rx = %d, tti_rx = %d\n", proc->frame_rx, proc->tti_rx);
         if (IS_SOFTMODEM_DOSCOPE && RC.gNB[0]->scopeData)
@@ -1464,14 +1480,18 @@ void *ru_thread( void *param ) {
                            prach_oc,
                            proc->frame_rx,proc->tti_rx);
           }
-
+          clock_gettime(CLOCK_MONOTONIC,&ru->rt_ru_profiling.return_RU_prachrx[rt_prof_idx]);
           free_nr_ru_prach_entry(ru,prach_id);
           VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_RU_PRACH_RX, 0 );
-        }
+        } // end if (prach_id > 0)
+      } // end if (ru->feprx)
+      else {
+         memset(&ru->rt_ru_profiling.return_RU_feprx[rt_prof_idx],0,sizeof(struct timespec));
+         memset(&ru->rt_ru_profiling.return_RU_prachrx[rt_prof_idx],0,sizeof(struct timespec));
       }
-    }
+    } // end if (slot_type == NR_UPLINK_SLOT || slot_type == NR_MIXED_SLOT) {
 
-    // At this point, all information for subframe has been received on FH interface
+    // At this point, all RX information for slot has been received on FH interface and processed by RU
     res = pullTpool(gNB->resp_L1, gNB->threadPool);
     syncMsg = (processingData_L1_t *)NotifiedFifoData(res);
     syncMsg->gNB = gNB;
@@ -1483,7 +1503,7 @@ void *ru_thread( void *param ) {
     res->key = proc->tti_rx;
     pushTpool(gNB->threadPool, res);
 
-  }
+  } //end while (!oai_exit)
 
   printf( "Exiting ru_thread \n");
 
diff --git a/executables/rt_profiling.h b/executables/rt_profiling.h
new file mode 100644
index 0000000000..ada628e419
--- /dev/null
+++ b/executables/rt_profiling.h
@@ -0,0 +1,62 @@
+
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file time_profiling.h
+ * \brief Definitions for proflling real-time scheduling 
+ * \author 
+ * \date 2022
+ * \version 0.1
+ * \company Eurecom
+ * \email: 
+ * \note
+ * \warning
+ */
+#ifndef TIME_PROFILING_H
+#define TIME_PROFILING_H
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+// depth of trace in slots
+#define RT_PROF_DEPTH 100
+typedef struct {
+   int absslot_rx[RT_PROF_DEPTH];
+   struct timespec return_RU_south_in[RT_PROF_DEPTH];
+   struct timespec return_RU_feprx[RT_PROF_DEPTH];
+   struct timespec return_RU_prachrx[RT_PROF_DEPTH];
+   struct timespec return_RU_pushL1[RT_PROF_DEPTH];
+   struct timespec start_RU_TX[RT_PROF_DEPTH];
+   struct timespec return_RU_TX[RT_PROF_DEPTH];
+} rt_ru_profiling_t;
+
+typedef struct {
+   int absslot_rx[RT_PROF_DEPTH];
+   struct timespec return_L1_RX[RT_PROF_DEPTH];
+   struct timespec return_L1_TX[RT_PROF_DEPTH];
+   struct timespec return_L1_prachrx[RT_PROF_DEPTH];
+   struct timespec return_L1_pushL1[RT_PROF_DEPTH];
+} rt_l1_profiling_t;
+#ifdef __cplusplus
+}
+#endif
+#endif
diff --git a/openair1/PHY/defs_RU.h b/openair1/PHY/defs_RU.h
index e81a935a52..86016288ed 100644
--- a/openair1/PHY/defs_RU.h
+++ b/openair1/PHY/defs_RU.h
@@ -40,6 +40,7 @@
 #include "defs_common.h"
 #include "nfapi_nr_interface_scf.h"
 #include <common/utils/threadPool/thread-pool.h>
+#include <executables/rt_profiling.h>
 
 #define MAX_BANDS_PER_RRU 4
 #define MAX_RRU_CONFIG_SIZE 1024
@@ -678,6 +679,8 @@ typedef struct RU_t_s {
   int tpcores[16];
   /// number of cores for RU ThreadPool
   int num_tpcores;
+  /// structure for analyzing high-level RT measurements
+  rt_ru_profiling_t rt_ru_profiling; 
 } RU_t;
 
 
diff --git a/openair1/SCHED_NR/nr_ru_procedures.c b/openair1/SCHED_NR/nr_ru_procedures.c
index 1b55e11372..62362005f7 100644
--- a/openair1/SCHED_NR/nr_ru_procedures.c
+++ b/openair1/SCHED_NR/nr_ru_procedures.c
@@ -56,7 +56,7 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
 
   NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
 
-  unsigned int slot_offset,slot_offsetF,initial_slot_offset,num_samples;;
+  unsigned int slot_offset,slot_offsetF;
   int slot = tti_tx;
 
 
@@ -72,7 +72,6 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
     slot_offset += (idx_sym%(0x7<<fp->numerology_index)) ? fp->nb_prefix_samples : fp->nb_prefix_samples0;
 
   slot_offset += fp->ofdm_symbol_size*first_symbol;
-  initial_slot_offset = slot_offset;
 
   LOG_D(PHY,"SFN/SF:RU:TX:%d/%d aa %d Generating slot %d (first_symbol %d num_symbols %d) slot_offset %d, slot_offsetF %d\n",ru->proc.frame_tx, ru->proc.tti_tx,aa,slot,first_symbol,num_symbols,slot_offset,slot_offsetF);
   
@@ -83,7 +82,6 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
                  num_symbols,
                  fp->nb_prefix_samples,
                  CYCLIC_PREFIX);
-    num_samples=num_symbols*(fp->nb_prefix_samples+fp->ofdm_symbol_size);
   } else {
     if (fp->numerology_index != 0) {
       
@@ -101,8 +99,6 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
                      num_symbols-1,
                      fp->nb_prefix_samples,
                      CYCLIC_PREFIX);
-        num_samples=(num_symbols-1)*(fp->nb_prefix_samples+fp->ofdm_symbol_size)+
-		    fp->nb_prefix_samples0+fp->ofdm_symbol_size;
       }
       else { // all symbols in slot have shorter prefix
         PHY_ofdm_mod(&ru->common.txdataF_BF[aa][slot_offsetF],
@@ -111,7 +107,6 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
                      num_symbols,
                      fp->nb_prefix_samples,
                      CYCLIC_PREFIX);
-        num_samples=num_symbols*(fp->nb_prefix_samples+fp->ofdm_symbol_size);
       }
     } // numerology_index!=0
     else { //numerology_index == 0
@@ -137,7 +132,6 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
           slot_offsetF += fp->ofdm_symbol_size;
         }
       } // for(idx_symbol..
-      num_samples=slot_offset-initial_slot_offset;
     } //  numerology 0
   }
 
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet.md b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet.md
new file mode 100644
index 0000000000..cdad36ad51
--- /dev/null
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet.md
@@ -0,0 +1,51 @@
+# Ethernet drivers 
+
+This directory contains ethernet-based drivers for fronthaul. The only functional versions today are ECPRI time-domain (split 8) over UDP for AW2S and IF4.5 (split 7) for OAI RU over UDP. The RAW ethernet implementation is currently not tested and quite possibly obsolete.
+
+
+## license
+    Author:
+      Raymond Knopp, EURECOM 
+      OAI License V1.1
+# Top-level
+
+The implement the OAI IF device interface which provides the transmit/receive (trx) functions for OAI. Some minimal control-plane socket handling for IF4p5 is also provided. It comprises the following top-level functions (ethernet_lib.c) which are mapped to the OAI device structure:
+
+* trx_eth_start       : create sockets and threads to handle I/O
+* trx_eth_end         : close sockets
+* trx_eth_stop        : stops 3rd party (AW2S) device
+* trx_eth_set_freq    : empty
+* trx_eth_set_gains   : empty
+* trx_eth_get_stats   : empty
+* trx_eth_reset_stats : empty
+* trx_eth_write_init  : empty
+* ethernet_tune       : write certain performance-related parameters to ethernet device
+* transport_init      : entry routine to fill device data structure with function pointers 
+
+
+# IF4p5 U-plane implementation
+
+It is contained in the eth_udp.c and eth_raw.c files. The two basic routines are
+
+* trx_eth_read_udp_IF4p5() : implements a blocking read for three particular IF4p5 packets, IF4p5_PULFFT (for OAI RCC/DU), IF4p5_PRACH and IF4p5_PDLFFT (for OAI RU). The packets are parsed and mapped to the appropriate physical channels by the OAI physical layer   
+* trx_eth_write_udp_IF4p5 : implements a write for the three IF4p5 packets.
+
+* trx_eth_ctlsend_udp : implements the sending component for the control socket
+
+* trx_eth_ctlrecv_udp : implements the receive component for the control socket (blocking read)
+
+# ECPRI U-plane implementation 
+
+It is contained in the eth_udp.c file and only implements ECPRI/UDP. The implementation has 2 top-level functions:
+
+* trx_eth_write_udp : This sends a stream of packets containing 16-bit I/ 16-bit Q samples to the ECPRI RU. It uses the proprietary AW2S format (user-defined). Each packet carries 256 samples and some header information (timestamp, antenna index) and fits inslitly more than 1024 bytes. Each packet with Ethernet, IP and UDP headers fits into a regular Ethernet frame. The transmit function does not block and pushes the data to a worker thread (udp_write_thread) which runs in the background. The worker thread scales the IQ samples to fit in 16-bit units and forms the ECPRI packets for each antenna. The signals are split into 256-sample chunks and antennas are handled in sequence for each chunk. This ensures that all antennas receive their signals more or less at the same time. 
+
+* trx_eth_read_udp : This is a blocking read which waits for a worker thread (udp_read_thread) listening on the U-plane socket to have acquired enough samples satisfying the request (nsamps). Usually a slot or subframe worth of samples. The worker thread identifies the antenna index (aid) and timestamp of each packet and copies the received chunk into the destination memory location according to the timestamp modulo the length of the receive buffer. There is only one memcpy in the driver and the end OAI application can use the data in its normal local (RU.common.rxdata[aid]). The memcpy is needed since the destination address depends on the antenna index which is carried in the received packet itself. Kernel filtering and redirection (C/EBPF) doesn't seem to be possible with the AW2S packet format.
+
+The two threads should be pinned to isolated CPUs to maximize performance. Their CPU id's can be passed to the driver from the OAI application. tx_fh_core and rx_fh_core in the RU section of the OAI .conf file.
+
+# Obsolete code
+
+Non ECPRI split 8 and IF4p5 with RAW sockets is not functional anymore (eth_raw.c). split-8 will be resusitated if an RU implementing ECPRI is integrated with OAI. IF4p5 with raw sockets is replaced with the FHI Split 7.2 interface.
+ 
+

From 1b35f0b16393d8f518eaa0d7f1f6f4f0e6acdcc3 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Fri, 5 Aug 2022 07:18:44 +0200
Subject: [PATCH 17/28] added profiling circular buffer to gNB

---
 executables/nr-gnb.c       | 14 ++++++++++++++
 executables/rt_profiling.h |  8 +++++---
 openair1/PHY/defs_gNB.h    |  3 +++
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/executables/nr-gnb.c b/executables/nr-gnb.c
index 6a914fc33e..a94db960c0 100644
--- a/executables/nr-gnb.c
+++ b/executables/nr-gnb.c
@@ -38,6 +38,7 @@
 #include "assertions.h"
 #include <common/utils/LOG/log.h>
 #include <common/utils/system.h>
+#include "rt_profiling.h"
 
 #include "PHY/types.h"
 
@@ -115,10 +116,17 @@ void tx_func(void *param) {
   int frame_tx = info->frame;
   int slot_tx = info->slot;
 
+  int absslot_tx = info->timestamp_tx/info->gNB->frame_parms.get_samples_per_slot(slot_tx,&info->gNB->frame_parms);
+  int absslot_rx = absslot_tx-info->gNB->RU_list[0]->sl_ahead;
+  int rt_prof_idx = absslot_rx % RT_PROF_DEPTH;
+
+  clock_gettime(CLOCK_MONOTONIC,&info->gNB->rt_L1_profiling.start_L1_TX[rt_prof_idx]);
   phy_procedures_gNB_TX(info,
                         frame_tx,
                         slot_tx,
                         1);
+  clock_gettime(CLOCK_MONOTONIC,&info->gNB->rt_L1_profiling.return_L1_TX[rt_prof_idx]);
+
 }
 
 void rx_func(void *param) {
@@ -130,6 +138,11 @@ void rx_func(void *param) {
   int slot_tx = info->slot_tx;
   nfapi_nr_config_request_scf_t *cfg = &gNB->gNB_config;
 
+  int absslot_tx = info->timestamp_tx/gNB->frame_parms.get_samples_per_slot(slot_rx,&gNB->frame_parms);
+  int absslot_rx = absslot_tx - gNB->RU_list[0]->sl_ahead;
+  int rt_prof_idx = absslot_rx % RT_PROF_DEPTH;
+
+  clock_gettime(CLOCK_MONOTONIC,&info->gNB->rt_L1_profiling.start_L1_RX[rt_prof_idx]);
   start_meas(&softmodem_stats_rxtx_sf);
 
   // *******************************************************************
@@ -229,6 +242,7 @@ void rx_func(void *param) {
 
   stop_meas( &softmodem_stats_rxtx_sf );
   LOG_D(PHY,"%s() Exit proc[rx:%d%d tx:%d%d]\n", __FUNCTION__, frame_rx, slot_rx, frame_tx, slot_tx);
+  clock_gettime(CLOCK_MONOTONIC,&info->gNB->rt_L1_profiling.return_L1_RX[rt_prof_idx]);
 
   // Call the scheduler
   start_meas(&gNB->ul_indication_stats);
diff --git a/executables/rt_profiling.h b/executables/rt_profiling.h
index ada628e419..e37c37bb1e 100644
--- a/executables/rt_profiling.h
+++ b/executables/rt_profiling.h
@@ -50,12 +50,14 @@ typedef struct {
 } rt_ru_profiling_t;
 
 typedef struct {
-   int absslot_rx[RT_PROF_DEPTH];
+   int absslot_ux[RT_PROF_DEPTH];
+   struct timespec start_L1_RX[RT_PROF_DEPTH];
    struct timespec return_L1_RX[RT_PROF_DEPTH];
+   struct timespec start_L1_TX[RT_PROF_DEPTH];
    struct timespec return_L1_TX[RT_PROF_DEPTH];
    struct timespec return_L1_prachrx[RT_PROF_DEPTH];
-   struct timespec return_L1_pushL1[RT_PROF_DEPTH];
-} rt_l1_profiling_t;
+   struct timespec return_L1_puschL1[RT_PROF_DEPTH];
+} rt_L1_profiling_t;
 #ifdef __cplusplus
 }
 #endif
diff --git a/openair1/PHY/defs_gNB.h b/openair1/PHY/defs_gNB.h
index 9ed6f50616..7001a7e4d6 100644
--- a/openair1/PHY/defs_gNB.h
+++ b/openair1/PHY/defs_gNB.h
@@ -42,6 +42,7 @@
 #include "PHY/defs_common.h"
 #include "PHY/CODING/nrLDPC_extern.h"
 #include "PHY/CODING/nrLDPC_decoder/nrLDPC_types.h"
+#include "executables/rt_profiling.h"
 
 #include "nfapi_nr_interface_scf.h"
 
@@ -908,6 +909,8 @@ typedef struct PHY_VARS_gNB_s {
   int number_of_nr_dlsch_max;
   int number_of_nr_ulsch_max;
   void * scopeData;
+  /// structure for analyzing high-level RT measurements
+  rt_L1_profiling_t rt_L1_profiling; 
 } PHY_VARS_gNB;
 
 typedef struct LDPCDecode_s {

From 517970a445a68a9248f50f3bf8672548edc4cb0c Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Fri, 5 Aug 2022 07:44:22 +0200
Subject: [PATCH 18/28] warning removal

---
 openair1/PHY/LTE_TRANSPORT/if5_tools.c | 10 +++++-----
 openair2/LAYER2/NR_MAC_gNB/config.c    |  4 ----
 2 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/openair1/PHY/LTE_TRANSPORT/if5_tools.c b/openair1/PHY/LTE_TRANSPORT/if5_tools.c
index 27a5eba944..bfcf0cf1b3 100644
--- a/openair1/PHY/LTE_TRANSPORT/if5_tools.c
+++ b/openair1/PHY/LTE_TRANSPORT/if5_tools.c
@@ -1052,7 +1052,7 @@ static inline int64_t clock_difftime_ns(struct timespec start, struct timespec e
 void send_IF5(RU_t *ru, openair0_timestamp proc_timestamp, int tti, uint8_t *seqno, uint16_t packet_type) {      
   
   LTE_DL_FRAME_PARMS *fp=ru->frame_parms;
-  int32_t *txp[ru->nb_tx], *rxp[ru->nb_rx]; 
+  int32_t *rxp[ru->nb_rx]; 
   int32_t *tx_buffer=NULL;
   uint16_t packet_id=0, i=0;
 
@@ -1184,7 +1184,7 @@ void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t pa
   openair0_timestamp timestamp[ru->nb_rx*spsf / spp_eth];
   long timein[ru->nb_rx*spsf/spp_eth];
   long timeout[ru->nb_rx*spsf/spp_eth];
-  long aid_list[ru->nb_rx*spsf/spp_eth];
+  int aid_list[ru->nb_rx*spsf/spp_eth];
   struct timespec if_time;
  
   memset(timestamp, 0, sizeof(timestamp));
@@ -1312,14 +1312,14 @@ void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t pa
       }
       for (i=0; i < ru->nb_rx; i++)
         rxp[i] = &ru->common.rxdata[i][offset];
-      int aid;
+      int aid=0;
       int firstTS=1;
       openair0_timestamp oldTS=0;
 
       for (packet_id=0; packet_id < ru->nb_rx*siglen / spp_eth; packet_id++) {
         //VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SEND_IF5_PKT_ID, packet_id );
         //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF0, 1 );
-        for (i=0;i<ru->nb_rx;i++) _mm_prefetch((char*)rxp[i][packet_id*spp_eth],_MM_HINT_NTA);
+        for (i=0;i<ru->nb_rx;i++) _mm_prefetch((const char*)&rxp[i][packet_id*spp_eth],_MM_HINT_NTA);
         clock_gettime( CLOCK_MONOTONIC, &if_time);
         timein[packet_id] = if_time.tv_nsec;
 /*        ru->ifdevice.trx_read_func2(&ru->ifdevice,
@@ -1338,7 +1338,7 @@ void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t pa
            if (firstTS==1) firstTS=0;
            else if (oldTS + spp_eth != timestamp[packet_id]) {
               LOG_I(PHY,"oldTS %llu, newTS %llu, diff %llu, timediff %ld\n",(long long unsigned int)oldTS,(long long unsigned int)timestamp[packet_id],(long long unsigned int)timestamp[packet_id]-oldTS,-timein[packet_id]+timeout[packet_id]); 
-              for (int i=0;i<=packet_id;i++) LOG_I(PHY,"packet %d/%d aid %d TS %llu, timediff %ld\n",i,ru->nb_rx*siglen / spp_eth,aid_list[i],(long long unsigned int)timestamp[i],-timein[i]+timeout[i]);
+              for (int i=0;i<=packet_id;i++) LOG_I(PHY,"packet %d/%d aid %d TS %llu, timediff %ld\n",i,ru->nb_rx*siglen / spp_eth,aid_list[i],(long long unsigned int)timestamp[i],(-timein[i]+timeout[i]));
               AssertFatal(1==0,"fronthaul problem\n");
            }
 
diff --git a/openair2/LAYER2/NR_MAC_gNB/config.c b/openair2/LAYER2/NR_MAC_gNB/config.c
index 79e020d560..3a0bf37807 100644
--- a/openair2/LAYER2/NR_MAC_gNB/config.c
+++ b/openair2/LAYER2/NR_MAC_gNB/config.c
@@ -514,12 +514,8 @@ int rrc_mac_config_req_gNB(module_id_t Mod_idP,
     int nr_slots_period = n;
     int nr_dl_slots = n;
     int nr_ulstart_slot = 0;
-    int nr_mix_slots;
-    int nr_dlmix_slots;
 
     if (tdd) {
-      nr_mix_slots = tdd->nrofDownlinkSymbols != 0 || tdd->nrofUplinkSymbols != 0;
-      nr_dlmix_slots = tdd->nrofDownlinkSlots + (tdd->nrofDownlinkSymbols != 0);
       nr_ulstart_slot = tdd->nrofDownlinkSlots + (tdd->nrofUplinkSymbols == 0);
 
       nr_dl_slots = tdd->nrofDownlinkSlots + (tdd->nrofDownlinkSymbols != 0);

From 491d97dee98f041769eb174c94520d1ec1b85139 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Sat, 6 Aug 2022 12:13:16 +0200
Subject: [PATCH 19/28] removal of IF5_tools.x and old NR RU multi-threaded
 implementation. Fixes for LTE build

---
 cmake_targets/CMakeLists.txt                  |    1 -
 executables/nr-gnb.c                          |    1 -
 executables/nr-ru.c                           |   68 +-
 openair1/PHY/LTE_TRANSPORT/if5_tools.c        | 1397 -----------------
 openair1/PHY/LTE_TRANSPORT/if5_tools.h        |   70 -
 openair1/SCHED/ru_procedures.c                |    1 -
 openair1/SCHED_NR/nr_ru_procedures.c          |  430 +----
 openair1/SCHED_NR/sched_nr.h                  |    5 -
 targets/ARCH/ETHERNET/USERSPACE/LIB/if_defs.h |    1 -
 targets/RT/USER/lte-enb.c                     |    1 -
 targets/RT/USER/lte-ru.c                      |   21 +-
 targets/RT/USER/ru_control.c                  |    1 -
 12 files changed, 35 insertions(+), 1962 deletions(-)
 delete mode 100644 openair1/PHY/LTE_TRANSPORT/if5_tools.c
 delete mode 100644 openair1/PHY/LTE_TRANSPORT/if5_tools.h

diff --git a/cmake_targets/CMakeLists.txt b/cmake_targets/CMakeLists.txt
index 157ac1f6b3..4553d8be85 100644
--- a/cmake_targets/CMakeLists.txt
+++ b/cmake_targets/CMakeLists.txt
@@ -1514,7 +1514,6 @@ set(PHY_SRC
 
 set(PHY_SRC_RU
   ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/if4_tools.c
-  ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/if5_tools.c
   ${OPENAIR1_DIR}/PHY/LTE_UE_TRANSPORT/drs_modulation.c
   ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/ulsch_demodulation.c
   ${OPENAIR1_DIR}/PHY/LTE_ESTIMATION/lte_ul_channel_estimation.c
diff --git a/executables/nr-gnb.c b/executables/nr-gnb.c
index a94db960c0..d392efa8e9 100644
--- a/executables/nr-gnb.c
+++ b/executables/nr-gnb.c
@@ -60,7 +60,6 @@
 //#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all
 
 #include "PHY/LTE_TRANSPORT/if4_tools.h"
-#include "PHY/LTE_TRANSPORT/if5_tools.h"
 
 #include "PHY/phy_extern.h"
 
diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index e58b9851df..95d46184e3 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -40,7 +40,6 @@
 #include "../../ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h"
 
 #include "PHY/LTE_TRANSPORT/if4_tools.h"
-#include "PHY/LTE_TRANSPORT/if5_tools.h"
 
 #include "PHY/types.h"
 #include "PHY/defs_nr_common.h"
@@ -59,7 +58,6 @@
 unsigned short config_frames[4] = {2,9,11,13};
 #endif
 
-#define USE_TPOOL 1 
 
 /* these variables have to be defined before including ENB_APP/enb_paramdef.h and GNB_APP/gnb_paramdef.h */
 static int DEFBANDS[] = {7};
@@ -1575,10 +1573,6 @@ void init_RU_proc(RU_t *ru) {
   if (opp_enabled == 1) 
     threadCreate( &ru->ru_stats_thread, ru_stats_thread, (void *)ru,"ru_stats", -1, OAI_PRIORITY_RT );
   if (get_thread_worker_conf() == WORKER_ENABLE) {
-#ifndef USE_TPOOL
-    if (ru->feprx) nr_init_feprx_thread(ru);
-    if (ru->feptx_ofdm) nr_init_feptx_thread(ru);
-#endif
   }
 
 }
@@ -1589,33 +1583,6 @@ void kill_NR_RU_proc(int inst) {
   LOG_D(PHY, "Joining pthread_FH\n");
   pthread_join(proc->pthread_FH, NULL);
 
-  if (get_nprocs() >= 2) {
-#ifndef USE_TPOOL	    
-    if (ru->feprx) {
-      for (int aid=0;aid<ru->nb_rx;aid++) {
-	 pthread_mutex_lock(&proc->mutex_fep[aid]);
-         proc->instance_cnt_fep[aid] = 0;
-         pthread_mutex_unlock(&proc->mutex_fep[aid]);
-         pthread_cond_signal(&proc->cond_fep[aid]);
-         LOG_D(PHY, "Joining pthread_fep %d\n",aid);
-         pthread_join(proc->pthread_fep[aid], NULL);
-         pthread_mutex_destroy(&proc->mutex_fep[aid]);
-         pthread_cond_destroy(&proc->cond_fep[aid]);
-      }
-    }
-
-    if (ru->feptx_ofdm) {
-      pthread_mutex_lock(&proc->mutex_feptx);
-      proc->instance_cnt_feptx = 0;
-      pthread_mutex_unlock(&proc->mutex_feptx);
-      pthread_cond_signal(&proc->cond_feptx);
-      LOG_D(PHY, "Joining pthread_feptx\n");
-      pthread_join(proc->pthread_feptx, NULL);
-      pthread_mutex_destroy(&proc->mutex_feptx);
-      pthread_cond_destroy(&proc->cond_feptx);
-    }
-#endif
-  }
   if (opp_enabled) {
     LOG_D(PHY, "Joining ru_stats_thread\n");
     pthread_join(ru->ru_stats_thread, NULL);
@@ -1823,13 +1790,8 @@ void set_function_spec_param(RU_t *ru) {
         ru->fh_north_out          = fh_if4p5_north_out;       // send_IF4p5 on reception
         ru->fh_south_out          = tx_rf;                    // send output to RF
         ru->fh_north_asynch_in    = fh_if4p5_north_asynch_in; // TX packets come asynchronously
-#ifdef USE_TPOOL
-        ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_tp   : nr_fep_full;     // this is frequency-shift + DFTs
-        ru->feptx_ofdm            = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_tp : nr_feptx_ofdm; // this is fep with idft only (no precoding in RRU)
-#else
-        ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_full_2thread   : nr_fep_full;     // this is frequency-shift + DFTs
-        ru->feptx_ofdm            = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_ofdm_2thread : nr_feptx_ofdm; // this is fep with idft only (no precoding in RRU)
-#endif
+        ru->feprx                 = nr_fep_tp;     // this is frequency-shift + DFTs
+        ru->feptx_ofdm            = nr_feptx_tp; // this is fep with idft only (no precoding in RRU)
         ru->feptx_prec            = NULL;
         ru->nr_start_if           = nr_start_if;              // need to start the if interface for if4p5
         ru->ifdevice.host_type    = RRU_HOST;
@@ -1849,14 +1811,9 @@ void set_function_spec_param(RU_t *ru) {
         malloc_IF4p5_buffer(ru);
       } else if (ru->function == gNodeB_3GPP) {
         ru->do_prach             = 0;                       // no prach processing in RU
-#ifdef USE_TPOOL
-        ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_tp   : nr_fep_full;     // this is frequency-shift + DFTs
-        ru->feptx_ofdm           = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_tp: nr_feptx_ofdm;              // this is fep with idft and precoding
-#else
-        ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_full_2thread   : nr_fep_full;     // this is frequency-shift + DFTs
-        ru->feptx_ofdm           = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_ofdm_2thread : nr_feptx_ofdm;              // this is fep with idft and precoding
-#endif
-        ru->feptx_prec           = (get_thread_worker_conf() == WORKER_ENABLE) ? NULL                  : nr_feptx_prec;           // this is fep with idft and precoding
+        ru->feprx                = nr_fep_tp;     // this is frequency-shift + DFTs
+        ru->feptx_ofdm           = nr_feptx_tp;              // this is fep with idft and precoding
+        ru->feptx_prec           = nr_feptx_prec;           // this is fep with idft and precoding
         ru->fh_north_in          = NULL;                    // no incoming fronthaul from north
         ru->fh_north_out         = NULL;                    // no outgoing fronthaul to north
         ru->nr_start_if          = NULL;                    // no if interface
@@ -1886,15 +1843,9 @@ void set_function_spec_param(RU_t *ru) {
     case REMOTE_IF5: // the remote unit is IF5 RRU
       ru->do_prach               = 0;
       ru->txfh_in_fep            = 0;
-#ifdef USE_TPOOL
-      ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_tp   : nr_fep_full;     // this is frequency-shift + DFTs
-      ru->feptx_prec             = (get_thread_worker_conf() == WORKER_ENABLE) ? NULL                  : nr_feptx_prec;          // need to do transmit Precoding + IDFTs
-      ru->feptx_ofdm             = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_tp: nr_feptx_ofdm; // need to do transmit Precoding + IDFTs
-#else
-      ru->feprx                  = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_fep_full_2thread   : nr_fep_full;     // this is frequency-shift + DFTs
-      ru->feptx_prec             = (get_thread_worker_conf() == WORKER_ENABLE) ? NULL                  : nr_feptx_prec;          // need to do transmit Precoding + IDFTs
-      ru->feptx_ofdm             = (get_thread_worker_conf() == WORKER_ENABLE) ? nr_feptx_ofdm_2thread : nr_feptx_ofdm; // need to do transmit Precoding + IDFTs
-#endif
+      ru->feprx                  = nr_fep_tp;     // this is frequency-shift + DFTs
+      ru->feptx_prec             = nr_feptx_prec;          // need to do transmit Precoding + IDFTs
+      ru->feptx_ofdm             = nr_feptx_tp; // need to do transmit Precoding + IDFTs
       ru->fh_south_in            = fh_if5_south_in;     // synchronous IF5 reception
       ru->fh_south_out           = (ru->txfh_in_fep>0) ? NULL : fh_if5_south_out;    // synchronous IF5 transmission
       ru->fh_south_asynch_in     = NULL;                // no asynchronous UL
@@ -1997,7 +1948,6 @@ void init_NR_RU(char *rf_config_file) {
         ru->gNB_list[0] = RC.gNB[0];
         ru->num_gNB=1;
         //
-        // DJP - feptx_prec() / feptx_ofdm() parses the gNB_list (based on num_gNB) and copies the txdata_F to txdata in RU
         //
       } else {
         LOG_E(PHY,"DJP - delete code above this %s:%d\n", __FILE__, __LINE__);
@@ -2041,7 +1991,6 @@ void init_NR_RU(char *rf_config_file) {
     for (int icpu=1; icpu<threadCnt; icpu++) {
        s_offset+=sprintf(pool+s_offset,",%d",ru->tpcores[icpu]);
     }
-#ifdef USE_TPOOL    
     LOG_I(PHY,"RU thread-pool core string %s\n",pool);
     ru->threadPool = (tpool_t*)malloc(sizeof(tpool_t));
     initTpool(pool, ru->threadPool, cpumeas(CPUMEAS_GETSTATE));
@@ -2051,7 +2000,6 @@ void init_NR_RU(char *rf_config_file) {
     // FEP TX result FIFO
     ru->respfeptx = (notifiedFIFO_t*) malloc(sizeof(notifiedFIFO_t));
     initNotifiedFIFO(ru->respfeptx);
-#endif
   } // for ru_id
 
   //  sleep(1);
diff --git a/openair1/PHY/LTE_TRANSPORT/if5_tools.c b/openair1/PHY/LTE_TRANSPORT/if5_tools.c
deleted file mode 100644
index bfcf0cf1b3..0000000000
--- a/openair1/PHY/LTE_TRANSPORT/if5_tools.c
+++ /dev/null
@@ -1,1397 +0,0 @@
-/*
- * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The OpenAirInterface Software Alliance licenses this file to You under
- * the OAI Public License, Version 1.1  (the "License"); you may not use this file
- * except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.openairinterface.org/?page_id=698
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *-------------------------------------------------------------------------------
- * For more information about the OpenAirInterface (OAI) Software Alliance:
- *      contact@openairinterface.org
- */
-
-/*! \file PHY/LTE_TRANSPORT/if5_tools.c
-* \brief 
-* \author S. Sandeep Kumar, Raymond Knopp, Tien-Thinh Nguyen
-* \date 2016
-* \version 0.1
-* \company Eurecom
-* \email: ee13b1025@iith.ac.in, knopp@eurecom.fr, tien-thinh.nguyen@eurecom.fr 
-* \note
-* \warning
-*/
-
-#include <time.h>
-#include "PHY/defs_eNB.h"
-#include "PHY/defs_gNB.h"
-#include <stdio.h>
-#include "PHY/defs_RU.h"
-#include "PHY/TOOLS/alaw_lut.h"
-//#include "targets/ARCH/ETHERNET/USERSPACE/LIB/if_defs.h"
-#include "targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h"
-#include "common/utils/LOG/vcd_signal_dumper.h"
-
-const uint8_t lin2alaw_if5[65536] = {213, 213, 213, 213, 213, 213, 213, 213, 213, 213, 213, 213, 213, 213, 213, 213, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 215, 215, 215, 215, 215, 215, 215, 215, 215, 215, 215, 215, 215, 215, 215, 215, 214, 214, 214, 214, 
-214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 214, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 209, 208, 208, 208, 208, 208, 208, 208, 208, 208, 208, 208, 208, 208, 208, 208, 208, 211, 211, 211, 211, 211, 211, 211, 211, 211, 211, 211, 211, 211, 211, 211, 211, 
-210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 221, 221, 221, 221, 221, 221, 221, 221, 221, 221, 221, 221, 221, 221, 221, 221, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 223, 223, 223, 223, 223, 223, 223, 223, 223, 223, 223, 223, 
-223, 223, 223, 223, 222, 222, 222, 222, 222, 222, 222, 222, 222, 222, 222, 222, 222, 222, 222, 222, 217, 217, 217, 217, 217, 217, 217, 217, 217, 217, 217, 217, 217, 217, 217, 217, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 216, 219, 219, 219, 219, 219, 219, 219, 219, 
-219, 219, 219, 219, 219, 219, 219, 219, 218, 218, 218, 218, 218, 218, 218, 218, 218, 218, 218, 218, 218, 218, 218, 218, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 197, 196, 196, 196, 196, 196, 196, 196, 196, 196, 196, 196, 196, 196, 196, 196, 196, 199, 199, 199, 199, 
-199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 198, 198, 198, 198, 198, 198, 198, 198, 198, 198, 198, 198, 198, 198, 198, 198, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 193, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 
-195, 195, 195, 195, 195, 195, 195, 195, 195, 195, 195, 195, 195, 195, 195, 195, 194, 194, 194, 194, 194, 194, 194, 194, 194, 194, 194, 194, 194, 194, 194, 194, 205, 205, 205, 205, 205, 205, 205, 205, 205, 205, 205, 205, 205, 205, 205, 205, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 
-204, 204, 204, 204, 207, 207, 207, 207, 207, 207, 207, 207, 207, 207, 207, 207, 207, 207, 207, 207, 206, 206, 206, 206, 206, 206, 206, 206, 206, 206, 206, 206, 206, 206, 206, 206, 201, 201, 201, 201, 201, 201, 201, 201, 201, 201, 201, 201, 201, 201, 201, 201, 200, 200, 200, 200, 200, 200, 200, 200, 
-200, 200, 200, 200, 200, 200, 200, 200, 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, 203, 202, 202, 202, 202, 202, 202, 202, 202, 202, 202, 202, 202, 202, 202, 202, 202, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 
-245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 244, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 
-247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 
-241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 241, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 243, 243, 243, 243, 243, 243, 243, 243, 
-243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 243, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 242, 253, 253, 253, 253, 
-253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 
-255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 
-254, 254, 254, 254, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 
-248, 248, 248, 248, 248, 248, 248, 248, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 
-250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 
-229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 229, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 
-228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 228, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 
-231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 231, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 
-230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 230, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 
-225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 
-224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 224, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 
-227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 227, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 
-226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 226, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 
-237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 237, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 
-236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 236, 239, 239, 239, 239, 239, 239, 239, 239, 
-239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 239, 238, 238, 238, 238, 
-238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 238, 
-233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 233, 
-233, 233, 233, 233, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 
-232, 232, 232, 232, 232, 232, 232, 232, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 
-235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 235, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 
-234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 234, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 
-149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 
-149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 149, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 
-148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 
-148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 148, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 
-151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 
-151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 151, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 
-150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 
-150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 
-145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 
-145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, 144, 144, 144, 144, 
-144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 
-144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 144, 
-144, 144, 144, 144, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 
-147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 
-147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 147, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 146, 
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-53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 10, 10, 10, 10, 
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-10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 
-10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 
-10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 
-11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 
-11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 
-11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 
-8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 
-8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 
-8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 
-9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 
-9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 14, 14, 14, 14, 14, 14, 14, 
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 
-15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 
-15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 
-15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 
-12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 
-12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 
-12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 
-12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 
-13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 
-13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 
-13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 
-2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 
-2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 
-2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 
-3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 
-3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
-1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
-1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 
-6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 
-6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 
-6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 
-7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 
-7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 
-4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 
-4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 
-4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 
-5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 
-5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 
-5, 5, 5, 5, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 
-26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 
-27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 
-27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 
-24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 
-24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 
-25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 
-30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 
-30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 
-31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 
-31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 
-28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 29, 
-29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 
-29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 
-18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 
-18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 
-19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 
-19, 19, 19, 19, 19, 19, 19, 19, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 
-16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 
-17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 
-17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 
-22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 
-22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 
-23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 20, 20, 20, 20, 20, 
-20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 
-20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 
-21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 
-21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 
-106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 
-107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 107, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 
-104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 104, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 
-105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 105, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 
-110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 
-111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 111, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 
-108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 
-109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 98, 98, 98, 98, 98, 98, 98, 98, 
-98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 98, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 
-99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 
-96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 
-97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 
-102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 
-103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 
-100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 
-101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 101, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 
-122, 122, 122, 122, 122, 122, 122, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 123, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 
-120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 121, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 
-126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 
-124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 114, 114, 114, 114, 114, 114, 114, 114, 114, 
-114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 114, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 115, 112, 112, 112, 112, 112, 
-112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 113, 118, 
-118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 118, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 
-119, 119, 119, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 116, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 117, 
-117, 117, 117, 117, 117, 117, 117, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 73, 78, 78, 
-78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 
-66, 66, 66, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 71, 71, 71, 71, 71, 71, 71, 71, 
-71, 71, 71, 71, 71, 71, 71, 71, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 91, 88, 88, 88, 
-88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 89, 89, 89, 89, 89, 89, 89, 89, 89, 89, 89, 89, 89, 89, 89, 89, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 95, 95, 95, 95, 95, 95, 95, 95, 95, 95, 95, 95, 95, 95, 95, 95, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 
-92, 92, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 82, 82, 82, 82, 82, 82, 82, 82, 82, 82, 82, 82, 82, 82, 82, 82, 83, 83, 83, 83, 83, 83, 83, 83, 83, 83, 83, 83, 83, 83, 83, 83, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 81, 81, 81, 81, 81, 81, 81, 81, 81, 
-81, 81, 81, 81, 81, 81, 81, 86, 86, 86, 86, 86, 86, 86, 86, 86, 86, 86, 86, 86, 86, 86, 86, 87, 87, 87, 87, 87, 87, 87, 87, 87, 87, 87, 87, 87, 87, 87, 87, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 84, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85};
-
-const uint16_t alaw2lin_if5[256] = {60032, 60288, 59520, 59776, 61056, 61312, 60544, 60800, 57984, 58240, 57472, 57728, 59008, 59264, 58496, 58752, 62784, 62912, 62528, 62656, 63296, 63424, 63040, 63168, 61760, 61888, 61504, 61632, 62272, 62400, 62016, 62144, 43520, 44544, 41472, 42496, 47616, 
-48640, 45568, 46592, 35328, 36352, 33280, 34304, 39424, 40448, 37376, 38400, 54528, 55040, 53504, 54016, 56576, 57088, 55552, 56064, 50432, 50944, 49408, 49920, 52480, 52992, 51456, 51968, 65192, 65208, 65160, 65176, 65256, 65272, 65224, 65240, 65064, 65080, 65032, 65048, 65128, 65144, 65096, 
-65112, 65448, 65464, 65416, 65432, 65512, 65528, 65480, 65496, 65320, 65336, 65288, 65304, 65384, 65400, 65352, 65368, 64160, 64224, 64032, 64096, 64416, 64480, 64288, 64352, 63648, 63712, 63520, 63584, 63904, 63968, 63776, 63840, 64848, 64880, 64784, 64816, 64976, 65008, 64912, 64944, 64592, 
-64624, 64528, 64560, 64720, 64752, 64656, 64688, 5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736, 7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784, 2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368, 3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392, 22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944, 
-30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136, 11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472, 15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568, 344, 328, 376, 360, 280, 264, 312, 296, 472, 456, 504, 488, 408, 392, 440, 424, 88, 72, 120, 104, 24, 8, 56, 40, 216, 200, 248, 232, 
-152, 136, 184, 168, 1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184, 1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696, 688, 656, 752, 720, 560, 528, 624, 592, 944, 912, 1008, 976, 816, 784, 880, 848};
-
-struct timespec start_comp, start_decomp, end_comp, end_decomp;
-int dummy_cnt = 0;
-int subframe_skip_extra = 0;
-int start_flag = 1;
-int offset_cnt = 1;
-
-static inline int64_t clock_difftime_ns(struct timespec start, struct timespec end)
-{
-  struct timespec temp;
-  int64_t temp_ns;
-
-  if ((end.tv_nsec-start.tv_nsec)<0) {
-    temp.tv_sec = end.tv_sec-start.tv_sec-1;
-    temp.tv_nsec = 1000000000+end.tv_nsec-start.tv_nsec;
-  } else {
-    temp.tv_sec = end.tv_sec-start.tv_sec;
-    temp.tv_nsec = end.tv_nsec-start.tv_nsec;
-  }
-  temp_ns = (int64_t)(temp.tv_sec) * (int64_t)1000000000 + (temp.tv_nsec);
-  return temp_ns;
-}
-
-void send_IF5(RU_t *ru, openair0_timestamp proc_timestamp, int tti, uint8_t *seqno, uint16_t packet_type) {      
-  
-  LTE_DL_FRAME_PARMS *fp=ru->frame_parms;
-  int32_t *rxp[ru->nb_rx]; 
-  int32_t *tx_buffer=NULL;
-  uint16_t packet_id=0, i=0;
-
-  uint32_t spp_eth  = (uint32_t) ru->ifdevice.openair0_cfg->samples_per_packet;
-  uint32_t spsf     = (uint32_t) ru->ifdevice.openair0_cfg->samples_per_frame/10;
-  eth_state_t *eth = (eth_state_t*) (ru->ifdevice.priv);
- 
-  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF5, 1 );
-  if (packet_type == IF5_RRH_GW_DL) {    
-    if (eth->compression == ALAW_COMPRESS) {
-     AssertFatal(1==0,"IF5 compression needs reworking\n");
-/*
-      void    *alaw_buffer = ru->ifbuffer.tx[subframe&1];
-      int element_id=0;
-
-      uint16_t *data_block = NULL;
-      uint16_t *j = NULL;
-
-      if (eth->flags == ETH_RAW_MODE) {
-        data_block = (uint16_t*)(alaw_buffer + APP_HEADER_SIZE_BYTES + MAC_HEADER_SIZE_BYTES);
-      } else {
-        data_block = (uint16_t*)(alaw_buffer + APP_HEADER_SIZE_BYTES);
-      }    
-      for (packet_id=0; packet_id < spsf / spp_eth; packet_id++) {
-        VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SEND_IF5_PKT_ID, packet_id );
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_COMPR_IF, 1 );
-        clock_gettime( CLOCK_MONOTONIC, &start_comp);
-        for (i=0; i < fp->nb_antennas_tx; i++) {
-          for (element_id=0; element_id< spp_eth; element_id++){        
-            j = (uint16_t*) &ru->common.txdata[i][subframe*fp->samples_per_tti+packet_id*spp_eth+element_id];
-            data_block[element_id] = ((uint16_t) lin2alaw_if5[*j]) | (lin2alaw_if5[*(j+1)]<<8);
-          }  
-        }
-        clock_gettime( CLOCK_MONOTONIC, &end_comp);
-        LOG_D(HW,"[SF %d] Compress_Time: %"PRId64"\n",subframe,clock_difftime_ns(start_comp, end_comp));
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_COMPR_IF, 0 );
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF0, 1 );
-        clock_gettime( CLOCK_MONOTONIC, &start_comp);
-        ru->ifdevice.trx_write_func(&ru->ifdevice,
-				    (proc_timestamp + packet_id*spp_eth),
-				    (void**)&data_block,
-				    spp_eth,
-				    fp->nb_antennas_tx,
-				    0);
-        clock_gettime( CLOCK_MONOTONIC, &end_comp);
-        LOG_D(HW,"[SF %d] IF_Write_Time: %"PRId64"\n",subframe,clock_difftime_ns(start_comp, end_comp));
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF0, 0 );
-      }
-*/
-    } else if (eth->compression == NO_COMPRESS) {
-      AssertFatal(1==0,"Shouldn't get here anymore\n");
-    }
-  } else if (packet_type == IF5_RRH_GW_UL) {
-    if (eth->compression == ALAW_COMPRESS) {
-      AssertFatal(1==0,"ALAW IF5 requires work\n");
-     /* if (eth->flags == ETH_RAW_MODE) {
-        data_block = (uint16_t*)(alaw_buffer + APP_HEADER_SIZE_BYTES + MAC_HEADER_SIZE_BYTES);
-      } else {
-        data_block = (uint16_t*)(alaw_buffer + APP_HEADER_SIZE_BYTES);
-      }
-      for (packet_id=0; packet_id < spsf / spp_eth; packet_id++) {
-        //VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SEND_IF5_PKT_ID, packet_id );
-        //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_COMPR_IF, 1 );
-        clock_gettime( CLOCK_MONOTONIC, &start_comp);
-        for (i=0; i < fp->nb_antennas_rx; i++) {
-          for (element_id=0; element_id< spp_eth; element_id++){
-            j = (uint16_t*) &ru->common.rxdata[i][subframe*fp->samples_per_tti+packet_id*spp_eth+element_id];
-            data_block[element_id] = ((uint16_t) lin2alaw_if5[*j]) | (lin2alaw_if5[*(j+1)]<<8);
-          }
-        }
-        clock_gettime( CLOCK_MONOTONIC, &end_comp);
-        LOG_D(HW,"[SF %d] Compress_Time: %"PRId64"\n",subframe,clock_difftime_ns(start_comp, end_comp));
-        //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_COMPR_IF, 0 );
-        //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF0, 1 );
-        clock_gettime( CLOCK_MONOTONIC, &start_comp);
-        ru->ifdevice.trx_write_func(&ru->ifdevice,
-                                     (proc_timestamp + packet_id*spp_eth),
-                                     (void**)&data_block,
-                                     spp_eth,
-                                     fp->nb_antennas_rx,
-                                     0);
-        clock_gettime( CLOCK_MONOTONIC, &end_comp);
-        LOG_D(HW,"[SF %d] IF_Write_Time: %"PRId64"\n",subframe,clock_difftime_ns(start_comp, end_comp));
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF0, 0 );
-      }
-*/
-    } else if (eth->compression == NO_COMPRESS) {
-      for (i=0; i < ru->nb_rx; i++)
-        rxp[i] = (void*)&ru->common.rxdata[i][tti*fp->samples_per_tti];
-    
-      for (packet_id=0; packet_id < spsf / spp_eth; packet_id++) {
-        VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SEND_IF5_PKT_ID, packet_id );
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF0, 1 );
-        clock_gettime( CLOCK_MONOTONIC, &start_comp);
-        ru->ifdevice.trx_write_func(&ru->ifdevice,
-				    (proc_timestamp + packet_id*spp_eth),
-				    (void**)rxp,
-				    spp_eth,
-				    ru->nb_rx,
-				    0);
-        clock_gettime( CLOCK_MONOTONIC, &end_comp);
-        LOG_D(HW,"[SF %d] IF_Write_Time: %"PRId64"\n",tti,clock_difftime_ns(start_comp, end_comp));
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE_IF0, 0 );            
-        for (i=0; i < ru->nb_rx; i++)
-          rxp[i] += spp_eth;
-
-      }    
-    }
-  } else {    
-    AssertFatal(1==0, "send_IF5 - Unknown packet_type %x", packet_type);     
-  }  
-  
-  free(tx_buffer);
-  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF5, 0 );  
-  return;  		    
-}
-
-void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int tti, uint16_t packet_type,int is_rx) {
-
-  LTE_DL_FRAME_PARMS *fp=ru->frame_parms;
-  int32_t *txp[ru->nb_tx], *rxp[ru->nb_rx]; 
-
-  uint16_t packet_id=0, i=0;
-
-
-  int32_t spp_eth  = (int32_t) ru->ifdevice.openair0_cfg->samples_per_packet;
-  int32_t spsf     = (int32_t) ru->ifdevice.openair0_cfg->samples_per_frame/10;
-
-  openair0_timestamp timestamp[ru->nb_rx*spsf / spp_eth];
-  long timein[ru->nb_rx*spsf/spp_eth];
-  long timeout[ru->nb_rx*spsf/spp_eth];
-  int aid_list[ru->nb_rx*spsf/spp_eth];
-  struct timespec if_time;
- 
-  memset(timestamp, 0, sizeof(timestamp));
-  eth_state_t *eth = (eth_state_t*) (ru->ifdevice.priv);
-
-  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_RECV_IF5, 1 );  
-  
-  if (packet_type == IF5_RRH_GW_DL) {
-    if (eth->compression == ALAW_COMPRESS) {
-     AssertFatal(1==0,"IF5 compression needs reworking\n");
-
-/*
-      if (eth->flags == ETH_RAW_MODE) {
-        data_block = (uint16_t*)(alaw_buffer + APP_HEADER_SIZE_BYTES + MAC_HEADER_SIZE_BYTES);
-      } else {
-        data_block = (uint16_t*)(alaw_buffer + APP_HEADER_SIZE_BYTES);
-      }
-      for (packet_id=0; packet_id < spsf / spp_eth; packet_id++) {
-        VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_RECV_IF5_PKT_ID, packet_id );
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF0, 1 );
-        clock_gettime( CLOCK_MONOTONIC, &start_decomp);
-        ru->ifdevice.trx_read_func(&ru->ifdevice,
-				   &timestamp[packet_id],
-				   (void**)&data_block,
-				   spp_eth,
-				   fp->nb_antennas_tx);
-
-        clock_gettime( CLOCK_MONOTONIC, &end_decomp);
-        LOG_D(HW,"[SF %d] IF_Read_Time: %"PRId64"\n",subframe,clock_difftime_ns(start_decomp, end_decomp));
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF0, 0 );
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_DECOMPR_IF, 1 );
-        clock_gettime( CLOCK_MONOTONIC, &start_decomp);
-        for (i=0; i < fp->nb_antennas_tx; i++) {
-          for (element_id=0; element_id< spp_eth; element_id++) {
-            j      = (uint16_t*) &ru->common.txdata[i][subframe*fp->samples_per_tti+packet_id*spp_eth+element_id];
-            *j     = alaw2lin_if5[ (data_block[element_id] & 0xff) ];
-            *(j+1) = alaw2lin_if5[ (data_block[element_id]>>8) ];
-          }
-        }
-        clock_gettime( CLOCK_MONOTONIC, &end_decomp);
-        LOG_D(HW,"[SF %d] Decomperss_Time: %"PRId64"\n",subframe,clock_difftime_ns(start_decomp, end_decomp));
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_DECOMPR_IF, 0 );
-      }
-*/
-    } else if (eth->compression == NO_COMPRESS) {
-      int subframe = tti;
-      for (i=0; i < ru->nb_tx; i++)
-        txp[i] = (void*)&ru->common.txdata[i][subframe*fp->samples_per_tti];
-    
-      for (packet_id=0; packet_id < spsf / spp_eth; packet_id++) {
-        //VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_RECV_IF5_PKT_ID, packet_id );
-        //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF0, 1 );  
-        clock_gettime( CLOCK_MONOTONIC, &start_decomp);
-        ru->ifdevice.trx_read_func(&ru->ifdevice,
-				   &timestamp[packet_id],
-				   (void**)txp,
-				   spp_eth,
-				   ru->nb_tx);
-        clock_gettime( CLOCK_MONOTONIC, &end_decomp);
-        LOG_D(HW,"[SF %d] IF_Read_Time: %"PRId64"\n",subframe,clock_difftime_ns(start_decomp, end_decomp));
-        //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF0, 0 );  
-        for (i=0; i < ru->nb_tx; i++)
-          txp[i] += spp_eth;
-
-      }
-    }
-    *proc_timestamp = timestamp[0];
-    
-  } else if (packet_type == IF5_RRH_GW_UL) { 
-    if (eth->compression == ALAW_COMPRESS) {
-     AssertFatal(1==0,"IF5 compression needs reworking\n");
-/*
-      if (eth->flags == ETH_RAW_MODE) {
-        data_block = (uint16_t*)(alaw_buffer + APP_HEADER_SIZE_BYTES + MAC_HEADER_SIZE_BYTES);
-      } else {
-        data_block = (uint16_t*)(alaw_buffer + APP_HEADER_SIZE_BYTES);
-      }
-      for (packet_id=0; packet_id < spsf / spp_eth; packet_id++) {
-        VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SEND_IF5_PKT_ID, packet_id );
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF0, 1 );
-        clock_gettime( CLOCK_MONOTONIC, &start_decomp);
-        ru->ifdevice.trx_read_func(&ru->ifdevice,
-				   &timestamp[packet_id],
-				   (void**)&data_block,
-				   spp_eth,
-				   fp->nb_antennas_rx);
-        clock_gettime( CLOCK_MONOTONIC, &end_decomp);
-        LOG_D(HW,"[SF %d] IF_Read_Time: %"PRId64"\n",subframe,clock_difftime_ns(start_decomp, end_decomp));
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF0, 0 );
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_DECOMPR_IF, 1 );
-        clock_gettime( CLOCK_MONOTONIC, &start_decomp);
-        for (i=0; i < fp->nb_antennas_rx; i++) {
-          for (element_id=0; element_id< spp_eth; element_id++) {
-            j      = (uint16_t*) &ru->common.rxdata[i][subframe*fp->samples_per_tti+packet_id*spp_eth+element_id];
-            *j     = alaw2lin_if5[ (data_block[element_id] & 0xff) ];
-            *(j+1) = alaw2lin_if5[ (data_block[element_id]>>8) ];
-          }
-        }
-        clock_gettime( CLOCK_MONOTONIC, &end_decomp);
-        LOG_D(HW,"[SF %d] Decomperss_Time: %"PRId64"\n",subframe,clock_difftime_ns(start_decomp, end_decomp));
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_DECOMPR_IF, 0 );
-      }
-*/
-    } else if (eth->compression == NO_COMPRESS) {
-      //int16_t temp_rx[spp_eth*2] __attribute__((aligned(32)));
-      NR_DL_FRAME_PARMS *nrfp = ru->nr_frame_parms;
-
-      int offset,siglen;
-      int factor_n=1,factor_d=1;
-      if (nrfp) {
-         offset =  nrfp->get_samples_slot_timestamp(tti,nrfp,0);
-         siglen = nrfp->get_samples_per_slot(tti,nrfp);
-      }
-      else {
-         offset = tti*fp->samples_per_subframe;
-         siglen = spsf;
-      }
-      if (ru->openair0_cfg.nr_flag==1) { // This check if RRU knows about NR numerologies
-         if (nrfp->N_RB_DL <= 162 && nrfp->N_RB_DL > 106) factor_n = 2;
-         else if (nrfp->N_RB_DL <= 106 && nrfp->N_RB_DL > 51) {factor_d=3;factor_n=4;}
-         else if (nrfp->N_RB_DL == 51) {factor_n=1;factor_d=1;}
-      }
-      else {
-         factor_d = 30720/spsf;
-      }
-      for (i=0; i < ru->nb_rx; i++)
-        rxp[i] = &ru->common.rxdata[i][offset];
-      int aid=0;
-      int firstTS=1;
-      openair0_timestamp oldTS=0;
-
-      for (packet_id=0; packet_id < ru->nb_rx*siglen / spp_eth; packet_id++) {
-        //VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SEND_IF5_PKT_ID, packet_id );
-        //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF0, 1 );
-        for (i=0;i<ru->nb_rx;i++) _mm_prefetch((const char*)&rxp[i][packet_id*spp_eth],_MM_HINT_NTA);
-        clock_gettime( CLOCK_MONOTONIC, &if_time);
-        timein[packet_id] = if_time.tv_nsec;
-/*        ru->ifdevice.trx_read_func2(&ru->ifdevice,
-				   &timestamp[packet_id],
-				   (is_rx>0) ? rxp : NULL,
-				   spp_eth,
-                                   packet_id,
-				   &aid);*/
-        clock_gettime( CLOCK_MONOTONIC, &if_time);
-        timeout[packet_id] = if_time.tv_nsec;
-        timestamp[packet_id] = (timestamp[packet_id]*factor_n)/factor_d; 
-        aid_list[packet_id] = aid;
-        //LOG_D(PHY,"TTI %d: factor = %d/%d Received packet %d: aid %d, TS %llu, oldTS %llu, diff %lld, \n",tti,factor_n,factor_d,packet_id,aid,(unsigned long long)timestamp[packet_id],(unsigned long long)oldTS,(unsigned long long)(timestamp[packet_id]-timestamp[0]));
-
-        if (aid==0) {
-           if (firstTS==1) firstTS=0;
-           else if (oldTS + spp_eth != timestamp[packet_id]) {
-              LOG_I(PHY,"oldTS %llu, newTS %llu, diff %llu, timediff %ld\n",(long long unsigned int)oldTS,(long long unsigned int)timestamp[packet_id],(long long unsigned int)timestamp[packet_id]-oldTS,-timein[packet_id]+timeout[packet_id]); 
-              for (int i=0;i<=packet_id;i++) LOG_I(PHY,"packet %d/%d aid %d TS %llu, timediff %ld\n",i,ru->nb_rx*siglen / spp_eth,aid_list[i],(long long unsigned int)timestamp[i],(-timein[i]+timeout[i]));
-              AssertFatal(1==0,"fronthaul problem\n");
-           }
-
-           oldTS = timestamp[packet_id];
-        }
-   
-
-        // HYPOTHESIS: first packet per subframe has lowest timestamp of subframe
-        // should detect out of order and act accordingly ....
-        AssertFatal(aid==0 || aid==1 || aid==2 || aid==3,"aid %d != 0,1,2 or 3\n",aid);
-        //LOG_D(PHY,"rxp[%d] %p, dest %p, offset %d (%llu,%llu)\n",aid,rxp[aid],rxp[aid]+(timestamp[packet_id]-timestamp[0]),(int)(timestamp[packet_id]-timestamp[0]),(long long unsigned int)timestamp[packet_id],(long long unsigned int)timestamp[0]);
-        //memcpy((void*)(rxp[aid]+(timestamp[packet_id]-timestamp[0])),
-        //       (void*)temp_rx,
-        //       spp_eth<<2);
-        clock_gettime( CLOCK_MONOTONIC, &end_decomp);
-        //LOG_D(HW,"[TTI %d] IF_Read_Time: %"PRId64"\n",tti,clock_difftime_ns(start_decomp, end_decomp));
-        //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_IF0, 0 );            
-
-      }
-    }
-    *proc_timestamp = timestamp[0];
-  } else {
-    AssertFatal(1==0, "recv_IF5 - Unknown packet_type %x", packet_type);     
-  }  
-
-  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_RECV_IF5, 0 );  
-  
-  return;  
-}
-
-void malloc_IF5_buffer(RU_t *ru) {
-  // Keep the size large enough, 3840 is the number of samples in a packet for 20MHz BW
-  int i;
-  eth_state_t *eth = (eth_state_t*) (ru->ifdevice.priv);
-  if (eth->compression == ALAW_COMPRESS) {
-    if (eth->flags == ETH_RAW_MODE) {
-       for (i=0;i<10;i++)
-         ru->ifbuffer.tx[i] = malloc(RAW_PACKET_SIZE_BYTES_ALAW(3840));
-       ru->ifbuffer.rx = malloc(RAW_PACKET_SIZE_BYTES_ALAW(3840));
-    } else {     
-      for (i=0;i<10;i++)
-        ru->ifbuffer.tx[i] = malloc(UDP_PACKET_SIZE_BYTES_ALAW(3840));
-      ru->ifbuffer.rx = malloc(UDP_PACKET_SIZE_BYTES_ALAW(3840));
-    }
-  } else if (eth->compression == NO_COMPRESS) {
-    if (eth->flags == ETH_RAW_MODE) {
-      for (i=0;i<10;i++)
-        ru->ifbuffer.tx[i] = malloc(RAW_PACKET_SIZE_BYTES(3840));
-      ru->ifbuffer.rx = malloc(RAW_PACKET_SIZE_BYTES(3840));
-    } else {
-      for (i=0;i<10;i++)   
-        ru->ifbuffer.tx[i] = malloc(UDP_PACKET_SIZE_BYTES(3840));
-      ru->ifbuffer.rx = malloc(UDP_PACKET_SIZE_BYTES(3840));
-    }
-  }
-}
diff --git a/openair1/PHY/LTE_TRANSPORT/if5_tools.h b/openair1/PHY/LTE_TRANSPORT/if5_tools.h
deleted file mode 100644
index 8d346b3676..0000000000
--- a/openair1/PHY/LTE_TRANSPORT/if5_tools.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The OpenAirInterface Software Alliance licenses this file to You under
- * the OAI Public License, Version 1.1  (the "License"); you may not use this file
- * except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.openairinterface.org/?page_id=698
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *-------------------------------------------------------------------------------
- * For more information about the OpenAirInterface (OAI) Software Alliance:
- *      contact@openairinterface.org
- */
-
-/*! \file PHY/LTE_TRANSPORT/if5_tools.h
-* \brief 
-* \author S. Sandeep Kumar, Raymond Knopp
-* \date 2016
-* \version 0.1
-* \company Eurecom
-* \email: ee13b1025@iith.ac.in, knopp@eurecom.fr 
-* \note
-* \warning
-*/
-
-#ifndef __IF5_TOOLS_H__
-#define __IF5_TOOLS_H__
-
-#include <stdint.h>
-#include "PHY/defs_eNB.h"
-
-#define IF5_RRH_GW_DL 0x0022
-#define IF5_RRH_GW_UL 0x0023
-#define IF5_MOBIPASS 0xbffe
-
-struct IF5_mobipass_header {  
-  /// 
-  uint16_t flags; 
-  /// 
-  uint16_t fifo_status;
-  /// 
-  uint8_t seqno;
-  ///
-  uint8_t ack;
-  ///
-  uint32_t word0;
-  /// 
-  uint32_t time_stamp;
-  
-} __attribute__ ((__packed__));
-
-typedef struct IF5_mobipass_header IF5_mobipass_header_t;
-#define sizeof_IF5_mobipass_header_t 14
-
-void send_IF5(RU_t *, openair0_timestamp, int, uint8_t*, uint16_t);
-
-void recv_IF5(RU_t *ru, openair0_timestamp *proc_timestamp, int subframe, uint16_t packet_type,int is_rx);
-
-
-void malloc_IF5_buffer(RU_t *ru);
-
-#endif
-
diff --git a/openair1/SCHED/ru_procedures.c b/openair1/SCHED/ru_procedures.c
index b4cad7a153..2f60dde0a2 100644
--- a/openair1/SCHED/ru_procedures.c
+++ b/openair1/SCHED/ru_procedures.c
@@ -57,7 +57,6 @@
 #include "SCHED/sched_eNB.h"
 #include "PHY/MODULATION/modulation_eNB.h"
 #include "PHY/LTE_TRANSPORT/if4_tools.h"
-#include "PHY/LTE_TRANSPORT/if5_tools.h"
 #include "PHY/LTE_TRANSPORT/transport_common_proto.h"
 #include "PHY/LTE_TRANSPORT/transport_proto.h"
 #include "PHY/LTE_UE_TRANSPORT/transport_proto_ue.h"
diff --git a/openair1/SCHED_NR/nr_ru_procedures.c b/openair1/SCHED_NR/nr_ru_procedures.c
index 62362005f7..7648d3781c 100644
--- a/openair1/SCHED_NR/nr_ru_procedures.c
+++ b/openair1/SCHED_NR/nr_ru_procedures.c
@@ -35,7 +35,6 @@
 #include "PHY/MODULATION/modulation_common.h"
 #include "PHY/MODULATION/nr_modulation.h"
 #include "PHY/LTE_TRANSPORT/if4_tools.h"
-#include "PHY/LTE_TRANSPORT/if5_tools.h"
 
 #include "common/utils/LOG/log.h"
 #include "common/utils/system.h"
@@ -46,12 +45,14 @@
 #include "assertions.h"
 
 #include <time.h>
+
+
 // RU OFDM Modulator gNodeB
 
-extern openair0_config_t openair0_cfg[MAX_CARDS];
 
 extern int oai_exit;
 
+// OFDM modulation core routine, generates a first_symbol to first_symbol+num_symbols on a particular slot and TX antenna port
 void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
 
   NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
@@ -140,268 +141,7 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
   //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM+(first_symbol!=0?1:0), 0);
 }
 
-void nr_feptx_ofdm_2thread(RU_t *ru,int frame_tx,int tti_tx) {
-
-  nfapi_nr_config_request_scf_t *cfg = &ru->gNB_list[0]->gNB_config;
-  RU_proc_t  *proc  = &ru->proc;
-  RU_feptx_t *feptx = proc->feptx;
-
-  PHY_VARS_gNB *gNB;
-  NR_DL_FRAME_PARMS *fp   = ru->nr_frame_parms;
-  
-  int slot = tti_tx;
-
-  int i    = 0;
-  int j    = 0;//symbol
-  int aa   = 0;//physical antenna number
-  int ret  = 0;
-  int ofdm_mask_full   = (1<<(ru->nb_tx*2))-1;
-  int txdataF_offset   = (tti_tx*fp->samples_per_slot_wCP);
-
-  if (nr_slot_select(cfg,frame_tx,slot) == NR_UPLINK_SLOT) return;
-  for (aa=0; aa<ru->nb_tx; aa++) memset(ru->common.txdataF[aa],0,fp->samples_per_slot_wCP*sizeof(int32_t));
-
-  start_meas(&ru->ofdm_total_stats);
-
-  //if (nr_slot_select(cfg,frame_tx,slot)==NR_DOWNLINK_SLOT) {
-    if(ru->num_gNB != 0){//L1 RU on same machine
-      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM , 1 );
-      for(j=0; j<2; ++j){//half slot 
-        for(i=0; i<ru->nb_tx; ++i){
-          if(j == 0){
-            AssertFatal((ret=pthread_mutex_lock(&feptx[i].mutex_feptx))==0,"mutex_lock return %d\n",ret);
-            feptx[i].aa                      = i;
-            feptx[i].index                   = i;
-            feptx[i].ru                      = ru;
-            feptx[i].symbol                  = 0;
-            feptx[i].slot                    = slot;
-            feptx[i].nb_antenna_ports        = ru->nb_tx;
-            feptx[i].instance_cnt_feptx      = 0;
-            AssertFatal(pthread_cond_signal(&feptx[i].cond_feptx) == 0,"ERROR pthread_cond_signal for feptx_ofdm_thread\n");
-            AssertFatal((ret=pthread_mutex_unlock(&feptx[i].mutex_feptx))==0,"mutex_lock returns %d\n",ret);
-          }//first half
-          else{
-            AssertFatal((ret=pthread_mutex_lock(&feptx[i+ru->nb_tx].mutex_feptx))==0,"mutex_lock return %d\n",ret);
-            feptx[i+ru->nb_tx].aa                      = i;
-            feptx[i+ru->nb_tx].index                   = i+ru->nb_tx;
-            feptx[i+ru->nb_tx].ru                      = ru;
-            feptx[i+ru->nb_tx].symbol                  = fp->symbols_per_slot>>1;
-            feptx[i+ru->nb_tx].slot                    = slot;
-            feptx[i+ru->nb_tx].nb_antenna_ports        = ru->nb_tx;
-            feptx[i+ru->nb_tx].instance_cnt_feptx      = 0;
-            AssertFatal(pthread_cond_signal(&feptx[i+ru->nb_tx].cond_feptx) == 0,"ERROR pthread_cond_signal for feptx_ofdm_thread\n");
-            AssertFatal((ret=pthread_mutex_unlock(&feptx[i+ru->nb_tx].mutex_feptx))==0,"mutex_lock returns %d\n",ret);
-          }//second half
-        }//physical antenna
-      }//half slot
-    }//if L1 RU on same machine
-    else{//(RU only machine)
-      for(j=0; j<fp->symbols_per_slot; ++j){
-
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC+j , 1);
-        start_meas(&ru->txdataF_copy_stats);
-        AssertFatal(ru->num_gNB==1,"num_gNB>1, help\n");
-        gNB = ru->gNB_list[0];
-        cfg = &gNB->gNB_config;
-
-        for(i=0; i<ru->nb_tx; ++i){
-          memcpy((void*)&ru->common.txdataF[i][j*fp->ofdm_symbol_size],
-                 (void*)&gNB->common_vars.txdataF[i][j*fp->ofdm_symbol_size + txdataF_offset],
-                 fp->ofdm_symbol_size*sizeof(int32_t));
-	    
-        }
-
-        stop_meas(&ru->txdataF_copy_stats);
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC+j , 0);
-
-        VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM , 1 );
-
-        if (nr_slot_select(cfg,slot,frame_tx)==SF_DL) {
-          // If this is not an S-tti
-          for(i=0; i<ru->nb_tx; ++i){
-            if(j%2 == 0){
-              while(feptx[i].instance_cnt_feptx != -1){
-                usleep(5);
-              }
-              AssertFatal((ret=pthread_mutex_lock(&feptx[i].mutex_feptx))==0,"mutex_lock return %d\n",ret);
-              feptx[i].aa                      = i;
-              feptx[i].index                   = i;
-              feptx[i].ru                      = ru;
-              feptx[i].symbol                  = j;
-              feptx[i].slot                    = slot;
-              feptx[i].nb_antenna_ports        = ru->nb_tx;
-              feptx[i].instance_cnt_feptx      = 0;
-              AssertFatal(pthread_cond_signal(&feptx[i].cond_feptx) == 0,"ERROR pthread_cond_signal for feptx_ofdm_thread\n");
-              AssertFatal((ret=pthread_mutex_unlock(&feptx[i].mutex_feptx))==0,"mutex_lock returns %d\n",ret);
-            }
-            else{
-              while(feptx[i+ru->nb_tx].instance_cnt_feptx != -1){
-                usleep(5);
-              }
-              AssertFatal((ret=pthread_mutex_lock(&feptx[i+ru->nb_tx].mutex_feptx))==0,"mutex_lock return %d\n",ret);
-              feptx[i+ru->nb_tx].aa                      = i;
-              feptx[i+ru->nb_tx].index                   = i+ru->nb_tx;
-              feptx[i+ru->nb_tx].ru                      = ru;
-              feptx[i+ru->nb_tx].symbol                  = j;
-              feptx[i+ru->nb_tx].slot                    = slot;
-              feptx[i+ru->nb_tx].nb_antenna_ports        = ru->nb_tx;
-              feptx[i+ru->nb_tx].instance_cnt_feptx      = 0;
-              AssertFatal(pthread_cond_signal(&feptx[i+ru->nb_tx].cond_feptx) == 0,"ERROR pthread_cond_signal for feptx_ofdm_thread\n");
-              AssertFatal((ret=pthread_mutex_unlock(&feptx[i+ru->nb_tx].mutex_feptx))==0,"mutex_lock returns %d\n",ret);
-            }
-          }
-        }//if == SF_DL
-        else {
-          proc->feptx_mask = ofdm_mask_full;
-        }
-      }//j<fp->symbols_per_slot
-    }//else (RU only machine)
-  //}
-  // wait all process to finish
-  AssertFatal((ret=pthread_mutex_lock(&proc->mutex_feptx))==0,"mutex_lock return %d\n",ret);
-  while (proc->feptx_mask != ofdm_mask_full) {
-    // most of the time the thread is waiting here
-    // proc->instance_cnt_rxtx is -1
-    pthread_cond_wait(&proc->cond_feptx,&proc->mutex_feptx); // this unlocks mutex_rxtx while waiting and then locks it again
-  }
-  proc->feptx_mask = 0;
-  AssertFatal((ret=pthread_mutex_unlock(&proc->mutex_feptx))==0,"mutex_lock return %d\n",ret);
-
-  VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_RU_TX_OFDM_MASK, proc->feptx_mask );
-  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM , 0 );
-
-
-  stop_meas(&ru->ofdm_total_stats);
-
-}
-
-static void *nr_feptx_thread(void *param) {
-
-  RU_feptx_t *feptx = (RU_feptx_t *)param;
-  RU_t       *ru;
-  int         aa, slot, start, l, ret;
-  int         i;
-  int32_t ***bw;
-  NR_DL_FRAME_PARMS *fp;
-  int ofdm_mask_full;
-  int txdataF_offset;
-  while (!oai_exit) {
-    ret = 0;
-    if (wait_on_condition(&feptx->mutex_feptx,&feptx->cond_feptx,&feptx->instance_cnt_feptx,"NR feptx thread")<0) break;
-    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM+feptx->index+1 , 1 );
-
-    AssertFatal(feptx->ru->nb_log_antennas>0 && feptx->ru->nb_log_antennas < 13,"ru->nb_log_antennas is %d\n", feptx->ru->nb_log_antennas);
-
-    ru    = feptx->ru;
-    slot  = feptx->slot;
-    aa    = feptx->aa;
-    l     = feptx->symbol;
-    fp    = ru->nr_frame_parms;
-    start = feptx->symbol;
-    ofdm_mask_full   = (1<<(ru->nb_tx*2))-1;
-
-    if(ru->num_gNB != 0){
-      txdataF_offset = (slot*fp->samples_per_slot_wCP);
-      ////////////precoding////////////
-      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC+feptx->index+1 , 1);
-      
-      if (aa==0 && l==0) start_meas(&ru->precoding_stats);
-
-      if (ru->do_precoding == 1) {
-        for(i=0; i<ru->nb_log_antennas; ++i) {
-          memcpy((void*) &ru->common.beam_id[i][slot*fp->symbols_per_slot+l],
-                 (void*) &ru->gNB_list[0]->common_vars.beam_id[i][slot*fp->symbols_per_slot+l],
-                 (fp->symbols_per_slot>>1)*sizeof(uint8_t));
-         }
-      }
-
-      if (ru->nb_tx == 1 && ru->nb_log_antennas == 1) {
-        memcpy((void*)&ru->common.txdataF_BF[0][l*fp->ofdm_symbol_size],
-               (void*)&ru->gNB_list[0]->common_vars.txdataF[0][txdataF_offset + l*fp->ofdm_symbol_size],
-               (fp->samples_per_slot_wCP>>1)*sizeof(int32_t));
-      }
-      else if (ru->do_precoding == 0) {
-        int gNB_tx = ru->gNB_list[0]->frame_parms.nb_antennas_tx;
-        memcpy((void*)&ru->common.txdataF_BF[aa][l*fp->ofdm_symbol_size],
-               (void*)&ru->gNB_list[0]->common_vars.txdataF[aa%gNB_tx][txdataF_offset + l*fp->ofdm_symbol_size],
-               (fp->samples_per_slot_wCP>>1)*sizeof(int32_t));
-      }
-      else {
-        bw  = ru->beam_weights[0];
-        for(i=0; i<fp->symbols_per_slot>>1; ++i){
-          nr_beam_precoding(ru->gNB_list[0]->common_vars.txdataF,
-                        ru->common.txdataF_BF,
-                        fp,
-                        bw,
-                        slot,
-                        l+i,
-                        aa,
-                        ru->nb_log_antennas,
-                        txdataF_offset);//here
-        }
-      }
-      if (aa==0 && l==0) stop_meas(&ru->precoding_stats);
-      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC+feptx->index+1 , 0);
-
-      ////////////FEPTX////////////
-      nr_feptx0(ru,slot,start,fp->symbols_per_slot>>1,aa);
-
-      if (release_thread(&feptx->mutex_feptx,&feptx->instance_cnt_feptx,"NR feptx thread")<0) break;
-
-      AssertFatal((ret=pthread_mutex_lock(&ru->proc.mutex_feptx))==0,"mutex_lock return %d\n",ret);
-      ru->proc.feptx_mask |= 1<<(feptx->index);
-      if(ru->proc.feptx_mask == ofdm_mask_full)
-        AssertFatal(pthread_cond_signal(&ru->proc.cond_feptx) == 0,"ERROR pthread_cond_signal for precoding and ofdm finish\n");
-      AssertFatal((ret=pthread_mutex_unlock(&ru->proc.mutex_feptx))==0,"mutex_lock returns %d\n",ret);
-
-      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_RU_TX_OFDM_MASK, ru->proc.feptx_mask );
-    }// if L1 RU on same machine
-
-    else{
-      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC+feptx->index+1 , 1);
-      start_meas(&ru->precoding_stats);
-      if (ru->nb_tx == 1 && ru->nb_log_antennas) {
-            memcpy((void*)&ru->common.txdataF_BF[0][l*fp->ofdm_symbol_size],
-                 (void*)&ru->common.txdataF[0][l*fp->ofdm_symbol_size],
-                 fp->ofdm_symbol_size*sizeof(int32_t));
-      }
-      else {
-        bw  = ru->beam_weights[0];
-        nr_beam_precoding(ru->common.txdataF,
-                        ru->common.txdataF_BF,
-                        fp,
-                        bw,
-                        slot,
-                        l,
-                        aa,
-                        ru->nb_log_antennas,
-                        0);
-      }
-      stop_meas(&ru->precoding_stats);
-      VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC+feptx->index+1 , 0);
-
-
-      nr_feptx0(ru,slot,start,1,aa);
-
-      if (release_thread(&feptx->mutex_feptx,&feptx->instance_cnt_feptx,"NR feptx thread")<0) break;
-
-      if(l >= fp->symbols_per_slot -2){
-        AssertFatal((ret=pthread_mutex_lock(&ru->proc.mutex_feptx))==0,"mutex_lock return %d\n",ret);
-        ru->proc.feptx_mask |= 1<<(feptx->index);
-        if(ru->proc.feptx_mask == ofdm_mask_full)
-          AssertFatal(pthread_cond_signal(&ru->proc.cond_feptx) == 0,"ERROR pthread_cond_signal for precoding and ofdm finish\n");
-        AssertFatal((ret=pthread_mutex_unlock(&ru->proc.mutex_feptx))==0,"mutex_lock returns %d\n",ret);
-      }
-      VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_RU_TX_OFDM_MASK, ru->proc.feptx_mask );
-    }// else (RU only machine)
-    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM+feptx->index+1 , 0 );
-  }// while (oai_exit)
-  return(NULL);
-}
-
-
-// is this supposed to generate a slot or a subframe???
-// seems to be hardcoded to numerology 1 (2 slots=1 subframe)
+// RU FEP TX OFDM modulation, single-thread
 void nr_feptx_ofdm(RU_t *ru,int frame_tx,int tti_tx) {
      
   nfapi_nr_config_request_scf_t *cfg = &ru->gNB_list[0]->gNB_config;
@@ -431,25 +171,7 @@ void nr_feptx_ofdm(RU_t *ru,int frame_tx,int tti_tx) {
 
 }
 
-void nr_init_feptx_thread(RU_t *ru) {
-
-  RU_proc_t  *proc  = &ru->proc;
-  RU_feptx_t *feptx = proc->feptx;
-  int i = 0;
-
-  for(i=0; i<(ru->nb_tx*2); i++){
-    feptx[i].instance_cnt_feptx         = -1;
-    
-    pthread_mutex_init( &feptx[i].mutex_feptx, NULL);
-    pthread_cond_init( &feptx[i].cond_feptx, NULL);
-
-    threadCreate(&feptx[i].pthread_feptx, nr_feptx_thread, (void*)&feptx[i], "feptx", -1, OAI_PRIORITY_RT);
-    LOG_I(PHY,"init feptx thread %d\n", i);
-  }
-
-}
-
-
+// FEP TX precoding function, single-thread
 void nr_feptx_prec(RU_t *ru,int frame_tx,int tti_tx) {
 
   int l,aa;
@@ -508,140 +230,7 @@ void nr_feptx_prec(RU_t *ru,int frame_tx,int tti_tx) {
   stop_meas(&ru->precoding_stats);
 }
 
-void nr_fep0(RU_t *ru, int aid) {
-  
-  int l;
-  RU_proc_t *proc       = &ru->proc;
-  NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
-  
-  //  printf("fep0: slot %d\n",slot);
-
-  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX+proc->tti_rx, 1);
-
-  int offset = (proc->tti_rx&3) * fp->symbols_per_slot * fp->ofdm_symbol_size;
-  for (l = 0; l < NR_SYMBOLS_PER_SLOT; l++) {
-    nr_slot_fep_ul(fp,
-                   ru->common.rxdata[aid],
-                   &ru->common.rxdataF[aid][offset],
-                   l,
-                   proc->tti_rx,
-                   ru->N_TA_offset);
-  }
-  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX+proc->tti_rx, 0);
-}
-
-
-static void *nr_feprx_thread(void *param) {
-
-  feprx_cmd_t *feprx_cmd =  (feprx_cmd_t*)param;
-  RU_t *ru = feprx_cmd->ru;
-  RU_proc_t *proc  = &ru->proc;
-  int aid=feprx_cmd->aid;
-
-  while (!oai_exit) {
-
-    if (wait_on_condition(&proc->mutex_fep[aid-1],&proc->cond_fep[aid-1],&proc->instance_cnt_fep[aid-1],"NR feprx thread")<0) break;
-
-    if (oai_exit) break;
-
-    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX1, 1 );
-
-    nr_fep0(ru, aid);
-
-    VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX1, 0 );
-
-    if (release_thread(&proc->mutex_fep[aid-1],&proc->instance_cnt_fep[aid-1],"nr_feprx thread")<0) break;
-
-    if (pthread_cond_signal(&proc->cond_fep[aid-1]) != 0) {
-      printf("[gNB] ERROR pthread_cond_signal for nr_feprx thread exit\n");
-      exit_fun( "ERROR pthread_cond_signal" );
-      return NULL;
-    }
-  }
-  free(param);
-  return NULL;
-}
-
-
-void nr_init_feprx_thread(RU_t *ru) {
-
-  RU_proc_t *proc = &ru->proc;
-  AssertFatal(ru->nb_rx<8,"FEP is limited to 8 antennas maximum\n");
-  feprx_cmd_t *feprx_cmd;
-  for (int aid=0;aid<(ru->nb_rx-1);aid++) {
-    proc->instance_cnt_fep[aid]= -1;
-    pthread_mutex_init( &proc->mutex_fep[aid], NULL);
-    pthread_cond_init( &proc->cond_fep[aid], NULL);
-    feprx_cmd = malloc(sizeof(feprx_cmd_t));
-    feprx_cmd->aid=aid+1;
-    feprx_cmd->ru = ru;
-    threadCreate(&proc->pthread_fep[aid], nr_feprx_thread, (void*)feprx_cmd, "feprx", -1, OAI_PRIORITY_RT);
-  }
-}
-
-
-void nr_fep_full_2thread(RU_t *ru, int slot) {
-
-  RU_proc_t *proc = &ru->proc;
-
-  struct timespec wait;
-
-  // NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
-
-  // if ((fp->frame_type == TDD) &&
-     // (subframe_select(fp,proc->tti_rx) != NR_UPLINK_SLOT)) return;
-
-  if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX, 1 );
-
-  wait.tv_sec=0;
-  wait.tv_nsec=7000000L;
-
-  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX, 1 );
-  start_meas(&ru->ofdm_demod_stats);
-  for (int aid=0;aid<ru->nb_rx-1;aid++) { 
-    if (pthread_mutex_timedlock(&proc->mutex_fep[aid],&wait) != 0) {
-      printf("[RU] ERROR timeout on pthread_mutex_lock for nr_feprx thread aid %d (IC %d)\n", aid,proc->instance_cnt_fep[aid]);
-      exit_fun( "error locking mutex_fep" );
-      return;
-    }
-
-    if (proc->instance_cnt_fep[aid]==0) {
-      printf("[RU] FEP thread busy\n");
-      exit_fun("FEP thread busy");
-      pthread_mutex_unlock( &proc->mutex_fep[aid] );
-      return;
-    }
-  
-    ++proc->instance_cnt_fep[aid];
-
-
-    if (pthread_cond_signal(&proc->cond_fep[aid]) != 0) {
-      printf("[RU] ERROR pthread_cond_signal for nr_feprx thread\n");
-      exit_fun( "ERROR pthread_cond_signal" );
-      return;
-    }
-    //start_meas(&ru->ofdm_demod_wakeup_stats);
-  
-    pthread_mutex_unlock( &proc->mutex_fep[aid] );
-  }
-  // call first antenna in this thread
-  nr_fep0(ru, 0);
-
-  start_meas(&ru->ofdm_demod_wait_stats);
-  for (int aid=0;aid<ru->nb_rx-1;aid++)   
-    wait_on_busy_condition(&proc->mutex_fep[aid],&proc->cond_fep[aid],&proc->instance_cnt_fep[aid],"nr_feprx thread");  
-  stop_meas(&ru->ofdm_demod_wait_stats);
-  if(opp_enabled == 1 && ru->ofdm_demod_wakeup_stats.p_time>30*3000){
-    print_meas_now(&ru->ofdm_demod_wakeup_stats,"fep wakeup",stderr);
-    printf("delay in fep wait on codition in frame_rx: %d  subframe_rx: %d \n",proc->frame_rx,proc->tti_rx);
-  }
-
-  stop_meas(&ru->ofdm_demod_stats);
-  VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX, 0 );
-}
-
-
-
+// single thread RU FEP RX
 void nr_fep_full(RU_t *ru, int slot) {
 
   RU_proc_t *proc = &ru->proc;
@@ -677,7 +266,7 @@ void nr_fep_full(RU_t *ru, int slot) {
   
 }
 
-
+// core routine for FEP TX, called from threads in RU TX thread-pool 
 void nr_feptx(void *arg) {
 
   feptx_cmd_t *feptx = (feptx_cmd_t *)arg;
@@ -732,6 +321,8 @@ void nr_feptx(void *arg) {
       ////////////FEPTX////////////
   nr_feptx0(ru,slot,0,fp->symbols_per_slot,aa);
 }
+
+// RU FEP TX using thread-pool
 void nr_feptx_tp(RU_t *ru, int frame_tx, int slot) {
 
   nfapi_nr_config_request_scf_t *cfg = &ru->gNB_list[0]->gNB_config;
@@ -759,6 +350,7 @@ void nr_feptx_tp(RU_t *ru, int frame_tx, int slot) {
   if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM, 0 );
 }
 
+// core RX FEP routine, called by threads in RU thread-pool
 void nr_fep(void* arg) {
 	
   feprx_cmd_t *feprx_cmd = (feprx_cmd_t *)arg;
@@ -783,6 +375,8 @@ void nr_fep(void* arg) {
                      ru->N_TA_offset);
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX+aid, 0);
 }
+
+// RU RX FEP using thread-pool
 void nr_fep_tp(RU_t *ru, int slot) {
 
   int nbfeprx=0;
diff --git a/openair1/SCHED_NR/sched_nr.h b/openair1/SCHED_NR/sched_nr.h
index cfd911b36b..b39a974191 100644
--- a/openair1/SCHED_NR/sched_nr.h
+++ b/openair1/SCHED_NR/sched_nr.h
@@ -42,16 +42,11 @@ int  phy_procedures_gNB_uespec_RX(PHY_VARS_gNB *gNB, int frame_rx, int slot_rx);
 void L1_nr_prach_procedures(PHY_VARS_gNB *gNB,int frame,int slot);
 void nr_common_signal_procedures (PHY_VARS_gNB *gNB,int frame,int slot,nfapi_nr_dl_tti_ssb_pdu ssb_pdu);
 void nr_feptx_ofdm(RU_t *ru,int frame_tx,int tti_tx);
-void nr_feptx_ofdm_2thread(RU_t *ru,int frame_tx,int tti_tx);
 void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa);
-void nr_init_feptx_thread(RU_t *ru);
 void fep_full(RU_t *ru,int slot);
 void nr_feptx_prec(RU_t *ru,int frame_tx,int tti_tx);
-void nr_init_feptx_prec_thread(RU_t *ru);
 void nr_feptx_prec_control(RU_t *ru,int frame,int tti_tx);
-void nr_init_feprx_thread(RU_t *ru);
 void nr_fep_full(RU_t *ru, int slot);
-void nr_fep_full_2thread(RU_t *ru, int slot);
 void nr_fep_tp(RU_t *ru, int slot);
 void nr_feptx_tp(RU_t *ru, int frame_tx, int slot);
 void feptx_prec(RU_t *ru,int frame_tx,int tti_tx);
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/if_defs.h b/targets/ARCH/ETHERNET/USERSPACE/LIB/if_defs.h
index 47205cf8b8..fd33177ac3 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/if_defs.h
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/if_defs.h
@@ -38,7 +38,6 @@
 
 #ifndef LITE_COMPILATION
 #include "PHY/LTE_TRANSPORT/if4_tools.h"
-#include "PHY/LTE_TRANSPORT/if5_tools.h"
 #endif
 
 // ETH transport preference modes
diff --git a/targets/RT/USER/lte-enb.c b/targets/RT/USER/lte-enb.c
index 3d62d5c19a..30b3af7127 100644
--- a/targets/RT/USER/lte-enb.c
+++ b/targets/RT/USER/lte-enb.c
@@ -67,7 +67,6 @@
 //#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all
 
 #include "PHY/LTE_TRANSPORT/if4_tools.h"
-#include "PHY/LTE_TRANSPORT/if5_tools.h"
 #include "PHY/LTE_ESTIMATION/lte_estimation.h"
 
 #include "PHY/phy_extern.h"
diff --git a/targets/RT/USER/lte-ru.c b/targets/RT/USER/lte-ru.c
index b148662f06..66226896d7 100644
--- a/targets/RT/USER/lte-ru.c
+++ b/targets/RT/USER/lte-ru.c
@@ -54,7 +54,6 @@
 #include "PHY/LTE_ESTIMATION/lte_estimation.h"
 #include "PHY/LTE_REFSIG/lte_refsig.h"
 #include "PHY/LTE_TRANSPORT/if4_tools.h"
-#include "PHY/LTE_TRANSPORT/if5_tools.h"
 #include "PHY/LTE_TRANSPORT/transport_proto.h"
 #include "SCHED/sched_common.h"
 #include "common/utils/LOG/log.h"
@@ -136,8 +135,18 @@ static inline void fh_if5_south_out(RU_t *ru,int frame, int subframe, uint64_t t
   if (ru->idx == 0) VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TST, ru->proc.timestamp_tx&0xffffffff );
 
   ru->south_out_cnt++;
+  int offset = subframe*ru->frame_parms->samples_per_tti;
+  void *buffs[ru->nb_tx]; 
+  for (int aid=0;aid<ru->nb_tx;aid++) buffs[aid] = (void*)&ru->common.txdata[aid][offset]; 
+
+  ru->ifdevice.trx_write_func2(&ru->ifdevice,
+  		               timestamp,
+                               buffs,
+			       0,
+			       ru->frame_parms->samples_per_tti,
+			       0,
+			       ru->nb_tx); 
 
-  send_IF5(ru, timestamp, subframe, &ru->seqno, IF5_RRH_GW_DL);
 }
 
 
@@ -174,7 +183,7 @@ void fh_if5_south_in(RU_t *ru,
                      int *subframe) {
   LTE_DL_FRAME_PARMS *fp = ru->frame_parms;
   RU_proc_t *proc = &ru->proc;
-  recv_IF5(ru, &proc->timestamp_rx, *subframe, IF5_RRH_GW_UL);
+  ru->ifdevice.trx_read_func2(&ru->ifdevice,&proc->timestamp_rx,NULL,fp->samples_per_tti);
   proc->frame_rx    = (proc->timestamp_rx / (fp->samples_per_tti*10))&1023;
   proc->tti_rx = (proc->timestamp_rx / fp->samples_per_tti)%10;
   
@@ -400,8 +409,8 @@ void fh_if5_north_asynch_in(RU_t *ru,
   LTE_DL_FRAME_PARMS *fp = ru->frame_parms;
   RU_proc_t *proc        = &ru->proc;
   int tti_tx,frame_tx;
-  openair0_timestamp timestamp_tx;
-  recv_IF5(ru, &timestamp_tx, *subframe, IF5_RRH_GW_DL);
+  openair0_timestamp timestamp_tx=0;
+  //recv_IF5(ru, &timestamp_tx, *subframe, IF5_RRH_GW_DL);
   //      LOG_I(PHY,"Received subframe %d (TS %llu) from RCC\n",tti_tx,timestamp_tx);
   tti_tx = (timestamp_tx/fp->samples_per_tti)%10;
   frame_tx    = (timestamp_tx/(fp->samples_per_tti*10))&1023;
@@ -498,7 +507,7 @@ void fh_if5_north_out(RU_t *ru) {
   uint8_t seqno=0;
   /// **** send_IF5 of rxdata to BBU **** ///
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF5, 1 );
-  send_IF5(ru, proc->timestamp_rx, proc->tti_rx, &seqno, IF5_RRH_GW_UL);
+//  send_IF5(ru, proc->timestamp_rx, proc->tti_rx, &seqno, IF5_RRH_GW_UL);
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF5, 0 );
 }
 
diff --git a/targets/RT/USER/ru_control.c b/targets/RT/USER/ru_control.c
index 083b5f91ef..93a098ead6 100644
--- a/targets/RT/USER/ru_control.c
+++ b/targets/RT/USER/ru_control.c
@@ -57,7 +57,6 @@
 #include "../../ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h"
 
 #include "PHY/LTE_TRANSPORT/if4_tools.h"
-#include "PHY/LTE_TRANSPORT/if5_tools.h"
 
 #include "PHY/LTE_TRANSPORT/transport_proto.h"
 #include "SCHED/sched_eNB.h"

From d517c0c5b2c50007fbe1a95f16986b419fb1f9a3 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Sat, 6 Aug 2022 14:02:28 +0200
Subject: [PATCH 20/28] missing definitiona for build of OAI RU

---
 executables/main_ru.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/executables/main_ru.c b/executables/main_ru.c
index 93a580560e..22b92f7597 100644
--- a/executables/main_ru.c
+++ b/executables/main_ru.c
@@ -66,6 +66,7 @@ static int DEFBANDS[] = {7};
 static int DEFENBS[] = {0};
 static int DEFBFW[] = {0x00007fff};
 
+static int DEFRUTPCORES[] = {2,4,6,8};
 THREAD_STRUCT thread_struct;
 
 pthread_cond_t sync_cond;

From ed972fd6c6d25d5199ea19aa719c27c6b1970990 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Sat, 6 Aug 2022 16:27:41 +0200
Subject: [PATCH 21/28] changes to documentation ethernet.md and bug introduced
 through simplification (sectional of nr_feptx in nr-ru.c)

---
 executables/nr-ru.c                             | 8 ++++----
 targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet.md | 6 +++---
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index 95d46184e3..43e86ad71c 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -1812,8 +1812,8 @@ void set_function_spec_param(RU_t *ru) {
       } else if (ru->function == gNodeB_3GPP) {
         ru->do_prach             = 0;                       // no prach processing in RU
         ru->feprx                = nr_fep_tp;     // this is frequency-shift + DFTs
-        ru->feptx_ofdm           = nr_feptx_tp;              // this is fep with idft and precoding
-        ru->feptx_prec           = nr_feptx_prec;           // this is fep with idft and precoding
+        ru->feptx_ofdm           = nr_feptx_tp;             // this is fep with idft and precoding
+        ru->feptx_prec           = NULL;                    
         ru->fh_north_in          = NULL;                    // no incoming fronthaul from north
         ru->fh_north_out         = NULL;                    // no outgoing fronthaul to north
         ru->nr_start_if          = NULL;                    // no if interface
@@ -1844,7 +1844,7 @@ void set_function_spec_param(RU_t *ru) {
       ru->do_prach               = 0;
       ru->txfh_in_fep            = 0;
       ru->feprx                  = nr_fep_tp;     // this is frequency-shift + DFTs
-      ru->feptx_prec             = nr_feptx_prec;          // need to do transmit Precoding + IDFTs
+      ru->feptx_prec             = NULL;          // need to do transmit Precoding + IDFTs
       ru->feptx_ofdm             = nr_feptx_tp; // need to do transmit Precoding + IDFTs
       ru->fh_south_in            = fh_if5_south_in;     // synchronous IF5 reception
       ru->fh_south_out           = (ru->txfh_in_fep>0) ? NULL : fh_if5_south_out;    // synchronous IF5 transmission
@@ -1871,7 +1871,7 @@ void set_function_spec_param(RU_t *ru) {
     case REMOTE_IF4p5:
       ru->do_prach               = 0;
       ru->feprx                  = NULL;                // DFTs
-      ru->feptx_prec             = nr_feptx_prec;          // Precoding operation
+      ru->feptx_prec             = NULL;          // Precoding operation
       ru->feptx_ofdm             = NULL;                // no OFDM mod
       ru->fh_south_in            = fh_if4p5_south_in;   // synchronous IF4p5 reception
       ru->fh_south_out           = fh_if4p5_south_out;  // synchronous IF4p5 transmission
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet.md b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet.md
index cdad36ad51..4751cfe74a 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet.md
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet.md
@@ -9,7 +9,7 @@ This directory contains ethernet-based drivers for fronthaul. The only functiona
       OAI License V1.1
 # Top-level
 
-The implement the OAI IF device interface which provides the transmit/receive (trx) functions for OAI. Some minimal control-plane socket handling for IF4p5 is also provided. It comprises the following top-level functions (ethernet_lib.c) which are mapped to the OAI device structure:
+The files implement the OAI IF device interface which provides the transmit/receive (trx) functions for generic ethernet-based devices. Some minimal control-plane socket handling for IF4p5 is also provided. It comprises the following top-level functions (ethernet_lib.c) which are mapped to the OAI device structure:
 
 * trx_eth_start       : create sockets and threads to handle I/O
 * trx_eth_end         : close sockets
@@ -38,9 +38,9 @@ It is contained in the eth_udp.c and eth_raw.c files. The two basic routines are
 
 It is contained in the eth_udp.c file and only implements ECPRI/UDP. The implementation has 2 top-level functions:
 
-* trx_eth_write_udp : This sends a stream of packets containing 16-bit I/ 16-bit Q samples to the ECPRI RU. It uses the proprietary AW2S format (user-defined). Each packet carries 256 samples and some header information (timestamp, antenna index) and fits inslitly more than 1024 bytes. Each packet with Ethernet, IP and UDP headers fits into a regular Ethernet frame. The transmit function does not block and pushes the data to a worker thread (udp_write_thread) which runs in the background. The worker thread scales the IQ samples to fit in 16-bit units and forms the ECPRI packets for each antenna. The signals are split into 256-sample chunks and antennas are handled in sequence for each chunk. This ensures that all antennas receive their signals more or less at the same time. 
+* trx_eth_write_udp : This sends a stream of packets containing 16-bit I/ 16-bit Q samples to the ECPRI RU. It uses the proprietary AW2S format (user-defined). Each packet carries 256 samples and some header information (timestamp, antenna index) and fits inslightly more than 1024 bytes. Each packet with Ethernet, IP and UDP headers fits into a regular Ethernet frame. The transmit function does not block and pushes the data to a worker thread (udp_write_thread) which runs in the background. The worker thread scales the IQ samples to fit in 16-bit units and forms the ECPRI packets for each antenna. The signals are split into 256-sample chunks and antennas are handled in sequence for each chunk. This ensures that all antennas receive their signals more or less at the same time. 
 
-* trx_eth_read_udp : This is a blocking read which waits for a worker thread (udp_read_thread) listening on the U-plane socket to have acquired enough samples satisfying the request (nsamps). Usually a slot or subframe worth of samples. The worker thread identifies the antenna index (aid) and timestamp of each packet and copies the received chunk into the destination memory location according to the timestamp modulo the length of the receive buffer. There is only one memcpy in the driver and the end OAI application can use the data in its normal local (RU.common.rxdata[aid]). The memcpy is needed since the destination address depends on the antenna index which is carried in the received packet itself. Kernel filtering and redirection (C/EBPF) doesn't seem to be possible with the AW2S packet format.
+* trx_eth_read_udp : This is a blocking read which waits for a worker thread (udp_read_thread) listening on the U-plane socket to have acquired enough samples satisfying the request (nsamps). The requests are usually a slot (NR) or subframe (LTE) worth of samples. The worker thread identifies the antenna index (aid) and timestamp of each packet and copies the received chunk into the destination memory location according to the timestamp modulo the length of the receive buffer. The memory location for read is identifited during initialization of the interface and is written circularly. Typically the buffer would contain a frame's worth of samples, but this is not a requirement. There is only one memcpy in the driver and the end OAI application can use the data in its normal local buffer (RU.common.rxdata[aid]). The memcpy is needed since the destination address depends on the antenna index which is carried in the received packet itself. Kernel filtering and redirection (C/EBPF,XDP) doesn't seem to be possible with the AW2S packet format.
 
 The two threads should be pinned to isolated CPUs to maximize performance. Their CPU id's can be passed to the driver from the OAI application. tx_fh_core and rx_fh_core in the RU section of the OAI .conf file.
 

From 4e9c9c5864319a61f7d35abb4e9b8bd55528ff8f Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Sun, 7 Aug 2022 22:49:11 +0200
Subject: [PATCH 22/28] added configurable half-slot parallelization to RU
 processing (same as original version)

---
 executables/nr-ru.c                  |  7 ++--
 openair1/PHY/defs_RU.h               | 34 ++++---------------
 openair1/SCHED_NR/nr_ru_procedures.c | 50 +++++++++++++++++++++++-----
 openair2/ENB_APP/enb_paramdef.h      |  6 +++-
 4 files changed, 57 insertions(+), 40 deletions(-)

diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index 43e86ad71c..2a683147df 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -1193,9 +1193,9 @@ void *ru_stats_thread(void *param) {
       if (ru->feprx) print_meas(&ru->ofdm_demod_stats,"feprx (all ports)",NULL,NULL);
 
       if (ru->feptx_ofdm) {
-        print_meas(&ru->precoding_stats,"feptx_prec (per port)",NULL,NULL);
+        print_meas(&ru->precoding_stats,(ru->half_slot_parallelization==0)?"feptx_prec (per port)":"feptx_prec (per port, half_slot)",NULL,NULL);
+        print_meas(&ru->ofdm_mod_stats,(ru->half_slot_parallelization==0)?"feptx_ofdm (per port)":"feptx_ofdm (per port, half_slot)",NULL,NULL);
         print_meas(&ru->txdataF_copy_stats,"txdataF_copy",NULL,NULL);
-        print_meas(&ru->ofdm_mod_stats,"feptx_ofdm (per port)",NULL,NULL);
         print_meas(&ru->ofdm_total_stats,"feptx_total",NULL,NULL);
       }
       print_meas(&ru->rx_fhaul,"rx_fhaul",NULL,NULL);
@@ -1560,7 +1560,6 @@ void init_RU_proc(RU_t *ru) {
   proc->frame_offset             = 0;
   proc->num_slaves               = 0;
   proc->frame_tx_unwrap          = 0;
-  proc->feptx_mask               = 0;
 
   for (i=0; i<10; i++) proc->symbol_mask[i]=0;
 
@@ -2177,6 +2176,8 @@ static void NRRCconfig_RU(void) {
       RC.ru[j]->openair0_cfg.rxfh_cores[0]        = *(RUParamList.paramarray[j][RU_RXFH_CORE_ID].iptr);
       RC.ru[j]->openair0_cfg.txfh_cores[0]        = *(RUParamList.paramarray[j][RU_TXFH_CORE_ID].iptr);
       RC.ru[j]->num_tpcores                       = *(RUParamList.paramarray[j][RU_NUM_TP_CORES].iptr);
+      RC.ru[j]->half_slot_parallelization         = *(RUParamList.paramarray[j][RU_HALF_SLOT_PARALLELIZATION].iptr);
+      printf("[RU %d] Setting half-slot parallelization to %d\n",j,RC.ru[j]->half_slot_parallelization); 
       AssertFatal(RC.ru[j]->num_tpcores <= RUParamList.paramarray[j][RU_TP_CORES].numelt, "Number of TP cores should be <=16\n");
       for (i=0; i<RC.ru[j]->num_tpcores; i++) RC.ru[j]->tpcores[i] = RUParamList.paramarray[j][RU_TP_CORES].iptr[i];
       if (config_isparamset(RUParamList.paramarray[j], RU_BF_WEIGHTS_LIST_IDX)) {
diff --git a/openair1/PHY/defs_RU.h b/openair1/PHY/defs_RU.h
index 86016288ed..627ad7d27f 100644
--- a/openair1/PHY/defs_RU.h
+++ b/openair1/PHY/defs_RU.h
@@ -170,31 +170,11 @@ typedef struct RU_prec_t_s{
   int index;
 } RU_prec_t;
 
-typedef struct RU_feptx_t_s{
-  /// \internal This variable is protected by \ref mutex_feptx_prec
-  int instance_cnt_feptx;
-  /// pthread struct for RU TX FEP PREC worker thread
-  pthread_t pthread_feptx;
-  /// pthread attributes for worker feptx prec thread
-  pthread_attr_t attr_feptx;
-  /// condition varible for RU TX FEP PREC thread
-  pthread_cond_t cond_feptx;
-  /// mutex for fep PREC TX worker thread
-  pthread_mutex_t mutex_feptx;
-  struct RU_t_s *ru;
-  int aa;//physical MAX nb_tx
-  int half_slot;//first or second half of a slot
-  int slot;//current slot
-  int symbol;//current symbol
-  int nb_antenna_ports;//number of logical port
-  int index;
-}RU_feptx_t;
-
 typedef struct {
  int aid;
  struct RU_t_s *ru;
- int start_symbol;
- int end_symbol;
+ int startSymbol;
+ int endSymbol;
  int slot; 
 } feprx_cmd_t;
 
@@ -202,6 +182,8 @@ typedef struct {
  int aid;
  struct RU_t_s *ru;
  int slot; 
+ int startSymbol;
+ int numSymbols;
 } feptx_cmd_t;
 
 typedef struct {
@@ -411,10 +393,6 @@ typedef struct RU_proc_t_s {
 
   /// structure for precoding thread
   RU_prec_t prec[16];
-  /// structure for feptx thread
-  RU_feptx_t feptx[16];
-  /// mask for checking process finished
-  int feptx_mask;
 } RU_proc_t;
 
 typedef enum {
@@ -525,8 +503,10 @@ typedef struct RU_t_s {
   int sf_ahead;
   /// TX processing advance in slots (for NR)
   int sl_ahead;
-  /// flag to indicated TX FH is embedded in TX FEP
+  /// flag to indicate TX FH is embedded in TX FEP
   int txfh_in_fep;
+  /// flag to indicate half-slot parallelization
+  int half_slot_parallelization;
   /// FAPI confiuration
   nfapi_nr_config_request_scf_t  config;
   /// Frame parameters
diff --git a/openair1/SCHED_NR/nr_ru_procedures.c b/openair1/SCHED_NR/nr_ru_procedures.c
index 7648d3781c..d485238bc0 100644
--- a/openair1/SCHED_NR/nr_ru_procedures.c
+++ b/openair1/SCHED_NR/nr_ru_procedures.c
@@ -274,9 +274,13 @@ void nr_feptx(void *arg) {
   RU_t *ru    = feptx->ru;
   int  slot  = feptx->slot;
   int  aa    = feptx->aid;
+  int  startSymbol = feptx->startSymbol;
   NR_DL_FRAME_PARMS  *fp    = ru->nr_frame_parms;
+  int  numSymbols  = feptx->numSymbols;
+  int  numSamples  = feptx->numSymbols*fp->ofdm_symbol_size; 
+  int txdataF_offset = (slot*fp->samples_per_slot_wCP) + startSymbol*fp->ofdm_symbol_size;
+  int txdataF_BF_offset = startSymbol*fp->ofdm_symbol_size;
 
-  int txdataF_offset = (slot*fp->samples_per_slot_wCP);
       ////////////precoding////////////
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC+feptx->aid , 1);
       
@@ -291,17 +295,18 @@ void nr_feptx(void *arg) {
   }
 
   if (ru->nb_tx == 1 && ru->nb_log_antennas == 1) {
-     memcpy((void*)&ru->common.txdataF_BF[0][0],
+     memcpy((void*)&ru->common.txdataF_BF[0][txdataF_BF_offset],
             (void*)&ru->gNB_list[0]->common_vars.txdataF[0][txdataF_offset],
-            (fp->samples_per_slot_wCP)*sizeof(int32_t));
+            numSamples*sizeof(int32_t));
   }
   else if (ru->do_precoding == 0) {
      int gNB_tx = ru->gNB_list[0]->frame_parms.nb_antennas_tx;
-     memcpy((void*)&ru->common.txdataF_BF[aa][0],
+     memcpy((void*)&ru->common.txdataF_BF[aa][txdataF_BF_offset],
             (void*)&ru->gNB_list[0]->common_vars.txdataF[aa%gNB_tx][txdataF_offset],
-            (fp->samples_per_slot_wCP)*sizeof(int32_t));
+            numSamples*sizeof(int32_t));
   }
   else {
+     AssertFatal(1==0,"This needs to be fixed, do not use beamforming.\n");
      int32_t ***bw  = ru->beam_weights[0];
      for(int i=0; i<fp->symbols_per_slot; ++i){
        nr_beam_precoding(ru->gNB_list[0]->common_vars.txdataF,
@@ -319,7 +324,7 @@ void nr_feptx(void *arg) {
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC+feptx->aid , 0);
 
       ////////////FEPTX////////////
-  nr_feptx0(ru,slot,0,fp->symbols_per_slot,aa);
+  nr_feptx0(ru,slot,startSymbol,numSymbols,aa);
 }
 
 // RU FEP TX using thread-pool
@@ -338,8 +343,21 @@ void nr_feptx_tp(RU_t *ru, int frame_tx, int slot) {
        feptx_cmd->aid          = aid;
        feptx_cmd->ru           = ru;
        feptx_cmd->slot         = slot;
+       feptx_cmd->startSymbol  = 0;
+       feptx_cmd->numSymbols   = (ru->half_slot_parallelization>0)?ru->nr_frame_parms->symbols_per_slot>>1:ru->nr_frame_parms->symbols_per_slot;
        pushTpool(ru->threadPool,req);
        nbfeptx++;
+       if (ru->half_slot_parallelization>0) {
+         notifiedFIFO_elt_t *req=newNotifiedFIFO_elt(sizeof(feptx_cmd_t), 2000 + aid + ru->nb_tx,ru->respfeptx,nr_feptx);
+         feptx_cmd_t *feptx_cmd=(feptx_cmd_t*)NotifiedFifoData(req);       
+         feptx_cmd->aid          = aid;
+         feptx_cmd->ru           = ru;
+         feptx_cmd->slot         = slot;
+         feptx_cmd->startSymbol  = ru->nr_frame_parms->symbols_per_slot>>1;
+         feptx_cmd->numSymbols   = ru->nr_frame_parms->symbols_per_slot>>1;
+         pushTpool(ru->threadPool,req);
+         nbfeptx++;
+       }
   }
   while (nbfeptx>0) {
     notifiedFIFO_elt_t *req=pullTpool(ru->respfeptx, ru->threadPool);
@@ -358,15 +376,16 @@ void nr_fep(void* arg) {
   RU_t *ru         = feprx_cmd->ru;
   int aid          = feprx_cmd->aid;
   int tti_rx       = feprx_cmd->slot;
-
+  int startSymbol  = feprx_cmd->startSymbol;
+  int endSymbol    = feprx_cmd->endSymbol;
   NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
   
-  LOG_D(PHY,"In nr_fep for aid %d, slot = %d\n", aid, tti_rx);
+  LOG_D(PHY,"In nr_fep for aid %d, slot = %d, startSymbol %d, endSymbol %d\n", aid, tti_rx,startSymbol,endSymbol);
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPRX+aid, 1);
 
   int offset = (tti_rx&3) * fp->symbols_per_slot * fp->ofdm_symbol_size;
-  for (int l = 0; l < fp->symbols_per_slot; l++) 
+  for (int l = startSymbol; l <= endSymbol; l++) 
       nr_slot_fep_ul(fp,
                      ru->common.rxdata[aid],
                      &ru->common.rxdataF[aid][offset],
@@ -388,8 +407,21 @@ void nr_fep_tp(RU_t *ru, int slot) {
        feprx_cmd->aid          = aid;
        feprx_cmd->ru           = ru;
        feprx_cmd->slot         = ru->proc.tti_rx;
+       feprx_cmd->startSymbol  = 0;
+       feprx_cmd->endSymbol    = (ru->half_slot_parallelization > 0)?(ru->nr_frame_parms->symbols_per_slot>>1)-1:(ru->nr_frame_parms->symbols_per_slot-1);
        pushTpool(ru->threadPool,req);
        nbfeprx++;
+       if (ru->half_slot_parallelization>0) {
+         notifiedFIFO_elt_t *req=newNotifiedFIFO_elt(sizeof(feprx_cmd_t), 1000 + aid + ru->nb_rx,ru->respfeprx,nr_fep);
+         feprx_cmd_t *feprx_cmd=(feprx_cmd_t*)NotifiedFifoData(req);       
+         feprx_cmd->aid          = aid;
+         feprx_cmd->ru           = ru;
+         feprx_cmd->slot         = ru->proc.tti_rx;
+	 feprx_cmd->startSymbol  = ru->nr_frame_parms->symbols_per_slot>>1;
+         feprx_cmd->endSymbol    = ru->nr_frame_parms->symbols_per_slot-1;
+         pushTpool(ru->threadPool,req);
+         nbfeprx++;
+       }
   }
   while (nbfeprx>0) {
     notifiedFIFO_elt_t *req=pullTpool(ru->respfeprx, ru->threadPool);
diff --git a/openair2/ENB_APP/enb_paramdef.h b/openair2/ENB_APP/enb_paramdef.h
index 456417e02c..1e04d03548 100644
--- a/openair2/ENB_APP/enb_paramdef.h
+++ b/openair2/ENB_APP/enb_paramdef.h
@@ -108,6 +108,7 @@ typedef enum {
 #define CONFIG_STRING_RU_TP_CORES                 "tp_cores"
 #define CONFIG_STRING_RU_NUM_TP_CORES             "num_tp_cores"
 #define CONFIG_STRING_RU_NUM_INTERFACES           "num_interfaces"
+#define CONFIG_STRING_RU_HALF_SLOT_PARALLELIZATION "half_slot_parallelization"
 
 #define HLP_RU_SF_AHEAD "LTE TX processing advance"
 #define HLP_RU_SL_AHEAD "NR TX processing advance"
@@ -118,6 +119,7 @@ typedef enum {
 #define HLP_RU_TP_CORES "List of cores for RU ThreadPool"
 #define HLP_RU_NUM_TP_CORES "Number of cores for RU ThreadPool"
 #define HLP_RU_NUM_INTERFACES "Number of network interfaces for RU"
+#define HLP_RU_HALF_SLOT_PARALLELIZATION "run half slots in parallel in RU FEP"
 
 #define RU_LOCAL_IF_NAME_IDX          0
 #define RU_LOCAL_ADDRESS_IDX          1
@@ -157,6 +159,7 @@ typedef enum {
 #define RU_TP_CORES                   35
 #define RU_NUM_TP_CORES               36
 #define RU_NUM_INTERFACES             37
+#define RU_HALF_SLOT_PARALLELIZATION  38
 /*-----------------------------------------------------------------------------------------------------------------------------------------*/
 /*                                            RU configuration parameters                                                                  */
 /*   optname                                   helpstr   paramflags    XXXptr          defXXXval                   type      numelt        */
@@ -199,7 +202,8 @@ typedef enum {
     {CONFIG_STRING_RU_TXFH_CORE_ID, HLP_RU_TXFH_CORE_ID,       0,       uptr:NULL,       defintval:0,             TYPE_UINT,         0}, \
     {CONFIG_STRING_RU_TP_CORES, HLP_RU_TP_CORES,               0,       uptr:NULL,       defintarrayval:DEFRUTPCORES,  TYPE_INTARRAY,    8}, \
     {CONFIG_STRING_RU_NUM_TP_CORES, HLP_RU_NUM_TP_CORES,       0,       uptr:NULL,       defintval:4,             TYPE_UINT,         0}, \
-    {CONFIG_STRING_RU_NUM_INTERFACES HLP_RU_NUM_INTERFACES,    0,       uptr:NULL,       defintval:1,             TYPE_UINT,         0}, \
+    {CONFIG_STRING_RU_NUM_INTERFACES, HLP_RU_NUM_INTERFACES,    0,       uptr:NULL,       defintval:1,             TYPE_UINT,         0}, \
+    {CONFIG_STRING_RU_HALF_SLOT_PARALLELIZATION, HLP_RU_HALF_SLOT_PARALLELIZATION,    0,       uptr:NULL,       defintval:1,             TYPE_UINT,         0}, \
   }
 
 /*---------------------------------------------------------------------------------------------------------------------------------------*/

From 8530b9c2c2fc00843a8304271913981fb6c27b1e Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Tue, 9 Aug 2022 08:24:37 +0200
Subject: [PATCH 23/28] fixed issue with default CPU cores for RU in CI (now
 defaults to 2 TP cores and O/S controlled scheduling)

---
 executables/nr-ru.c             | 2 +-
 openair2/ENB_APP/enb_paramdef.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index 2a683147df..2597b3f50c 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -63,7 +63,7 @@ unsigned short config_frames[4] = {2,9,11,13};
 static int DEFBANDS[] = {7};
 static int DEFENBS[] = {0};
 static int DEFBFW[] = {0x00007fff};
-static int DEFRUTPCORES[] = {2,4,6,8};
+static int DEFRUTPCORES[] = {-1,-1,-1,-1};
 //static int DEFNRBANDS[] = {7};
 //static int DEFGNBS[] = {0};
 
diff --git a/openair2/ENB_APP/enb_paramdef.h b/openair2/ENB_APP/enb_paramdef.h
index 1e04d03548..0f7e762810 100644
--- a/openair2/ENB_APP/enb_paramdef.h
+++ b/openair2/ENB_APP/enb_paramdef.h
@@ -201,7 +201,7 @@ typedef enum {
     {CONFIG_STRING_RU_RXFH_CORE_ID, HLP_RU_RXFH_CORE_ID,       0,       uptr:NULL,       defintval:0,             TYPE_UINT,         0}, \
     {CONFIG_STRING_RU_TXFH_CORE_ID, HLP_RU_TXFH_CORE_ID,       0,       uptr:NULL,       defintval:0,             TYPE_UINT,         0}, \
     {CONFIG_STRING_RU_TP_CORES, HLP_RU_TP_CORES,               0,       uptr:NULL,       defintarrayval:DEFRUTPCORES,  TYPE_INTARRAY,    8}, \
-    {CONFIG_STRING_RU_NUM_TP_CORES, HLP_RU_NUM_TP_CORES,       0,       uptr:NULL,       defintval:4,             TYPE_UINT,         0}, \
+    {CONFIG_STRING_RU_NUM_TP_CORES, HLP_RU_NUM_TP_CORES,       0,       uptr:NULL,       defintval:2,             TYPE_UINT,         0}, \
     {CONFIG_STRING_RU_NUM_INTERFACES, HLP_RU_NUM_INTERFACES,    0,       uptr:NULL,       defintval:1,             TYPE_UINT,         0}, \
     {CONFIG_STRING_RU_HALF_SLOT_PARALLELIZATION, HLP_RU_HALF_SLOT_PARALLELIZATION,    0,       uptr:NULL,       defintval:1,             TYPE_UINT,         0}, \
   }

From 3ef063194ab6e580c1767a5af9210975bde76af4 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <raymond.knopp@eurecom.fr>
Date: Wed, 10 Aug 2022 17:27:57 +0200
Subject: [PATCH 24/28] small modification for performance tracing of RU
 procedures

---
 openair1/SCHED_NR/nr_ru_procedures.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/openair1/SCHED_NR/nr_ru_procedures.c b/openair1/SCHED_NR/nr_ru_procedures.c
index d485238bc0..6b0943d950 100644
--- a/openair1/SCHED_NR/nr_ru_procedures.c
+++ b/openair1/SCHED_NR/nr_ru_procedures.c
@@ -63,7 +63,7 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
 
   //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM+(first_symbol!=0?1:0) , 1 );
 
-  if (aa==0) start_meas(&ru->ofdm_mod_stats);
+  if (aa==0 && first_symbol == 0) start_meas(&ru->ofdm_mod_stats);
   slot_offset  = fp->get_samples_slot_timestamp(slot,fp,0);
   slot_offsetF = first_symbol*fp->ofdm_symbol_size;
 
@@ -136,7 +136,7 @@ void nr_feptx0(RU_t *ru,int tti_tx,int first_symbol, int num_symbols, int aa) {
     } //  numerology 0
   }
 
-  if (aa==0) stop_meas(&ru->ofdm_mod_stats);
+  if (aa==0 && first_symbol==0) stop_meas(&ru->ofdm_mod_stats);
         
   //VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM+(first_symbol!=0?1:0), 0);
 }

From 787249fe8a3fe08a4e431c6e2bab71eca8a8c085 Mon Sep 17 00:00:00 2001
From: Raymond Knopp <Raymond Knopp>
Date: Sat, 20 Aug 2022 19:20:50 +0200
Subject: [PATCH 25/28] fix for L2 emulator test

---
 executables/nr-gnb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/executables/nr-gnb.c b/executables/nr-gnb.c
index d392efa8e9..e8c20dc747 100644
--- a/executables/nr-gnb.c
+++ b/executables/nr-gnb.c
@@ -487,7 +487,8 @@ void init_gNB_Tpool(int inst) {
      threadCreate(&proc->L1_stats_thread,nrL1_stats_thread,(void*)gNB,"L1_stats",-1,OAI_PRIORITY_RT_LOW);
 
   LOG_I(PHY,"Creating thread for TX reordering and dispatching to RU\n");
-  threadCreate(&proc->pthread_tx_reorder, tx_reorder_thread, (void *)gNB, "thread_tx_reorder", gNB->RU_list[0]->tpcores[1], OAI_PRIORITY_RT_MAX);
+  threadCreate(&proc->pthread_tx_reorder, tx_reorder_thread, (void *)gNB, "thread_tx_reorder", 
+		  gNB->RU_list[0] ? gNB->RU_list[0]->tpcores[1] : -1, OAI_PRIORITY_RT_MAX);
 
 }
 

From 0bf4f01b919da36a4acc2f557989f5fcf2fe797e Mon Sep 17 00:00:00 2001
From: Robert Schmidt <robert.schmidt@openairinterface.org>
Date: Wed, 21 Sep 2022 15:16:33 +0200
Subject: [PATCH 26/28] Resolve warnings

---
 openair1/SIMULATION/LTE_PHY/ulsim.c           | 2 +-
 openair1/SIMULATION/NR_PHY/ulsim.c            | 3 ---
 targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c | 5 ++++-
 targets/RT/USER/lte-ru.c                      | 2 --
 4 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/openair1/SIMULATION/LTE_PHY/ulsim.c b/openair1/SIMULATION/LTE_PHY/ulsim.c
index 0f98eb337a..d63bf95bd9 100644
--- a/openair1/SIMULATION/LTE_PHY/ulsim.c
+++ b/openair1/SIMULATION/LTE_PHY/ulsim.c
@@ -1533,7 +1533,7 @@ int main(int argc, char **argv) {
   }//ch realization
 
   oai_exit=1;
-  pthread_cond_signal(&ru->proc.cond_fep);
+  pthread_cond_signal(&ru->proc.cond_fep[0]);
 
   if (abstx) { // ABSTRACTION
     fprintf(csv_fdUL,"];");
diff --git a/openair1/SIMULATION/NR_PHY/ulsim.c b/openair1/SIMULATION/NR_PHY/ulsim.c
index 43ac3fc145..fb15cc1c87 100644
--- a/openair1/SIMULATION/NR_PHY/ulsim.c
+++ b/openair1/SIMULATION/NR_PHY/ulsim.c
@@ -1063,7 +1063,6 @@ int main(int argc, char **argv)
   double blerStats[4][100];
   double berStats[4][100];
   double snrStats[100];
-  double ldpcDecStats[100] = {0};
   memset(errors_scrambling, 0, sizeof(uint32_t)*4*100);
   memset(n_errors, 0, sizeof(int)*4*100);
   memset(round_trials, 0, sizeof(int)*4*100);
@@ -1633,8 +1632,6 @@ int main(int argc, char **argv)
       printf("\n");
     }
 
-    ldpcDecStats[snrRun] = gNB->ulsch_decoding_stats.trials?inMicroS(gNB->ulsch_decoding_stats.diff/gNB->ulsch_decoding_stats.trials):0;
-
     if(n_trials==1)
       break;
 
diff --git a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
index c9fc75d387..dd9414a44c 100644
--- a/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
+++ b/targets/ARCH/ETHERNET/USERSPACE/LIB/eth_udp.c
@@ -30,6 +30,9 @@
  * \warning 
  */
 
+// _GNU_SOURCE needed to have sched_getcpu() from sched.h
+#define _GNU_SOURCE
+
 #include <arpa/inet.h>
 #include <linux/if_packet.h>
 #include <stdio.h>
@@ -478,7 +481,7 @@ void *udp_read_thread(void *arg) {
       memcpy((void*)(device->openair0_cfg->rxbase[aid]+offset),
              (void*)&buffer[APP_HEADER_SIZE_BYTES],
              count-APP_HEADER_SIZE_BYTES);
-      LOG_D(PHY,"UDP read thread_id %d (%d), aid %d, TS %llu, TS0 %llu, offset %d\n",(int)u->thread_id,(int)sched_getcpu(),aid,(unsigned long long)TS,(unsigned long long)fhstate->TS0,offset);
+      LOG_D(PHY,"UDP read thread_id %d (%d), aid %d, TS %llu, TS0 %llu, offset %ld\n",(int)u->thread_id,(int)sched_getcpu(),aid,(unsigned long long)TS,(unsigned long long)fhstate->TS0,offset);
     }
     sleep(1);
   }
diff --git a/targets/RT/USER/lte-ru.c b/targets/RT/USER/lte-ru.c
index 67449b0e47..d1e9c6029c 100644
--- a/targets/RT/USER/lte-ru.c
+++ b/targets/RT/USER/lte-ru.c
@@ -503,8 +503,6 @@ void fh_if4p5_north_asynch_in(RU_t *ru,
 
 
 void fh_if5_north_out(RU_t *ru) {
-  RU_proc_t *proc=&ru->proc;
-  uint8_t seqno=0;
   /// **** send_IF5 of rxdata to BBU **** ///
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_SEND_IF5, 1 );
 //  send_IF5(ru, proc->timestamp_rx, proc->tti_rx, &seqno, IF5_RRH_GW_UL);

From 1fedf2e508df714820bd80f72216a78d46b4d0d5 Mon Sep 17 00:00:00 2001
From: Robert Schmidt <robert.schmidt@openairinterface.org>
Date: Wed, 21 Sep 2022 18:31:24 +0200
Subject: [PATCH 27/28] Update timing thresholds and add 60MHz case

---
 ci-scripts/datalog_rt_stats.1x1.60.yaml       | 34 ++++++++++++
 ci-scripts/datalog_rt_stats.default.yaml      | 23 ++++----
 ci-scripts/xml_files/gnb_phytest_usrp_run.xml |  7 ++-
 .../xml_files/gnb_phytest_usrp_run_60.xml     | 55 +++++++++++++++++++
 4 files changed, 105 insertions(+), 14 deletions(-)
 create mode 100644 ci-scripts/datalog_rt_stats.1x1.60.yaml
 create mode 100644 ci-scripts/xml_files/gnb_phytest_usrp_run_60.xml

diff --git a/ci-scripts/datalog_rt_stats.1x1.60.yaml b/ci-scripts/datalog_rt_stats.1x1.60.yaml
new file mode 100644
index 0000000000..f00ffc7e78
--- /dev/null
+++ b/ci-scripts/datalog_rt_stats.1x1.60.yaml
@@ -0,0 +1,34 @@
+#this is a configuration file
+#used to build real time processing statistics
+#for 5G NR phy test (gNB terminate)
+Title : Processing Time (us)
+ColNames :
+  - Metric
+  - Average; Max; Count
+  - Average vs Reference Deviation (Reference Value; Acceptability Threshold)
+Ref :
+  feprx : 48.0
+  feptx_prec : 13.0
+  feptx_ofdm : 35.0
+  feptx_total : 59.0
+  L1 Tx processing : 210.0
+  DLSCH encoding : 129.0
+  L1 Rx processing : 287.0
+  PUSCH inner-receiver : 166.0
+  PUSCH decoding : 176.0
+  Schedule Response : 42.0
+  DL & UL scheduling timing : 13.0
+  UL Indication : 55.0
+Threshold :
+  feprx : 1.25
+  feptx_prec : 1.25
+  feptx_ofdm : 1.25
+  feptx_total : 1.25
+  L1 Tx processing : 1.25
+  DLSCH encoding : 1.25
+  L1 Rx processing : 1.25
+  PUSCH inner-receiver : 1.25
+  PUSCH decoding : 1.25
+  Schedule Response : 1.25
+  DL & UL scheduling timing : 1.25
+  UL Indication : 1.25
diff --git a/ci-scripts/datalog_rt_stats.default.yaml b/ci-scripts/datalog_rt_stats.default.yaml
index 97591a766d..bfbd97729c 100644
--- a/ci-scripts/datalog_rt_stats.default.yaml
+++ b/ci-scripts/datalog_rt_stats.default.yaml
@@ -7,18 +7,18 @@ ColNames :
   - Average; Max; Count
   - Average vs Reference Deviation (Reference Value; Acceptability Threshold)
 Ref : 
-  feprx : 60.0
-  feptx_prec : 8.0
-  feptx_ofdm : 50.0
-  feptx_total : 75.0
-  L1 Tx processing : 300.0
-  DLSCH encoding : 230.0
-  L1 Rx processing : 175.0
+  feprx : 53.0
+  feptx_prec : 16.0
+  feptx_ofdm : 37.0
+  feptx_total : 62.0
+  L1 Tx processing : 155.0
+  DLSCH encoding : 113.0
+  L1 Rx processing : 194.0
   PUSCH inner-receiver : 100.0
-  #PUSCH decoding : 180.0
-  PUSCH decoding : 240.0
-  DL & UL scheduling timing : 37.0
-  UL Indication : 38.0
+  PUSCH decoding : 150.0
+  Schedule Response : 10.0
+  DL & UL scheduling timing : 9.0
+  UL Indication : 20.0
 Threshold :
   feprx : 1.25
   feptx_prec : 1.25
@@ -29,5 +29,6 @@ Threshold :
   L1 Rx processing : 1.25
   PUSCH inner-receiver : 1.25
   PUSCH decoding : 1.25
+  Schedule Response : 1.25
   DL & UL scheduling timing : 1.25
   UL Indication : 1.25
diff --git a/ci-scripts/xml_files/gnb_phytest_usrp_run.xml b/ci-scripts/xml_files/gnb_phytest_usrp_run.xml
index e7eb651d50..249908dd76 100644
--- a/ci-scripts/xml_files/gnb_phytest_usrp_run.xml
+++ b/ci-scripts/xml_files/gnb_phytest_usrp_run.xml
@@ -22,7 +22,7 @@
 -->
 <testCaseList>
 	<htmlTabRef>gNB-PHY-Test</htmlTabRef>
-	<htmlTabName>Run-gNB-PHY-Test</htmlTabName>
+	<htmlTabName>Timing phytest 40 MHz</htmlTabName>
 	<htmlTabIcon>tasks</htmlTabIcon>
 	<repeatCount>1</repeatCount>
 	<TestCaseRequestedList>
@@ -33,7 +33,8 @@
 	<testCase id="090101">
 		<class>Initialize_eNB</class>
 		<desc>Initialize gNB USRP</desc>
-		<Initialize_eNB_args>-O ci-scripts/conf_files/gnb.band78.tm1.106PRB.usrpn300.conf --phy-test -q -U 787200 -T 106 -t 28 -D 130175 -m 28 -M 106 --usrp-tx-thread-config 1 --log_config.global_log_options level,nocolor,time</Initialize_eNB_args>
+		<Initialize_eNB_args>-O ci-scripts/conf_files/gnb.band78.tm1.106PRB.usrpn300.conf --phy-test -q -U 787200 -T 106 -t 23 -D 130175 -m 28 -M 106 --usrp-tx-thread-config 1 --log_config.global_log_options level,nocolor,time</Initialize_eNB_args>
+    <rt_stats_cfg>datalog_rt_stats.default.yaml</rt_stats_cfg>
 		<air_interface>NR</air_interface>
 		<USRP_IPAddress>192.168.20.2</USRP_IPAddress>
 	</testCase>
@@ -41,7 +42,7 @@
 	<testCase id="000001">
 		<class>IdleSleep</class>
 		<desc>Sleep</desc>
-		<idle_sleep_time_in_sec>300</idle_sleep_time_in_sec>
+		<idle_sleep_time_in_sec>60</idle_sleep_time_in_sec>
 	</testCase>
 
 
diff --git a/ci-scripts/xml_files/gnb_phytest_usrp_run_60.xml b/ci-scripts/xml_files/gnb_phytest_usrp_run_60.xml
new file mode 100644
index 0000000000..07a4b484c0
--- /dev/null
+++ b/ci-scripts/xml_files/gnb_phytest_usrp_run_60.xml
@@ -0,0 +1,55 @@
+<!--
+
+ Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ contributor license agreements.  See the NOTICE file distributed with
+ this work for additional information regarding copyright ownership.
+ The OpenAirInterface Software Alliance licenses this file to You under
+ the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ except in compliance with the License.
+ You may obtain a copy of the License at
+
+      http://www.openairinterface.org/?page_id=698
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+ For more information about the OpenAirInterface (OAI) Software Alliance:
+      contact@openairinterface.org
+
+-->
+<testCaseList>
+  <htmlTabRef>gNB-PHY-Test</htmlTabRef>
+  <htmlTabName>Timing phytest 60 MHz</htmlTabName>
+  <htmlTabIcon>tasks</htmlTabIcon>
+  <repeatCount>1</repeatCount>
+  <TestCaseRequestedList>
+190101 000001 190109
+  </TestCaseRequestedList>
+  <TestCaseExclusionList></TestCaseExclusionList>
+
+  <testCase id="190101">
+    <class>Initialize_eNB</class>
+    <desc>Initialize gNB USRP</desc>
+    <Initialize_eNB_args>-O ci-scripts/conf_files/gnb.band78.tm1.106PRB.usrpn300.conf --phy-test --gNBs.[0].servingCellConfigCommon.[0].dl_carrierBandwidth 162 --gNBs.[0].servingCellConfigCommon.[0].ul_carrierBandwidth 162 -q -U 787200 -T 162 -t 23 -D 130175 -m 23 -M 162 --usrp-tx-thread-config 1 --log_config.global_log_options level,nocolor,time</Initialize_eNB_args>
+    <rt_stats_cfg>datalog_rt_stats.1x1.60.yaml</rt_stats_cfg>
+    <air_interface>NR</air_interface>
+    <USRP_IPAddress>192.168.20.2</USRP_IPAddress>
+  </testCase>
+
+  <testCase id="000001">
+    <class>IdleSleep</class>
+    <desc>Sleep</desc>
+    <idle_sleep_time_in_sec>60</idle_sleep_time_in_sec>
+  </testCase>
+
+
+  <testCase id="190109">
+    <class>Terminate_eNB</class>
+    <desc>Terminate gNB</desc>
+    <air_interface>NR</air_interface>
+  </testCase>
+
+</testCaseList>

From 40b33845f710dc860f053bc246c871d5c7b86f8e Mon Sep 17 00:00:00 2001
From: Robert Schmidt <robert.schmidt@openairinterface.org>
Date: Thu, 22 Sep 2022 13:58:06 +0200
Subject: [PATCH 28/28] Fix thresholds, fixup html table ref name to show tabs
 correctly

---
 ci-scripts/datalog_rt_stats.1x1.60.yaml        |  2 +-
 ci-scripts/datalog_rt_stats.default.yaml       | 18 +++++++++---------
 ci-scripts/xml_files/gnb_phytest_usrp_run.xml  |  2 +-
 .../xml_files/gnb_phytest_usrp_run_60.xml      |  2 +-
 4 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/ci-scripts/datalog_rt_stats.1x1.60.yaml b/ci-scripts/datalog_rt_stats.1x1.60.yaml
index f00ffc7e78..264b38775a 100644
--- a/ci-scripts/datalog_rt_stats.1x1.60.yaml
+++ b/ci-scripts/datalog_rt_stats.1x1.60.yaml
@@ -8,7 +8,7 @@ ColNames :
   - Average vs Reference Deviation (Reference Value; Acceptability Threshold)
 Ref :
   feprx : 48.0
-  feptx_prec : 13.0
+  feptx_prec : 16.0
   feptx_ofdm : 35.0
   feptx_total : 59.0
   L1 Tx processing : 210.0
diff --git a/ci-scripts/datalog_rt_stats.default.yaml b/ci-scripts/datalog_rt_stats.default.yaml
index bfbd97729c..cddb26d531 100644
--- a/ci-scripts/datalog_rt_stats.default.yaml
+++ b/ci-scripts/datalog_rt_stats.default.yaml
@@ -8,17 +8,17 @@ ColNames :
   - Average vs Reference Deviation (Reference Value; Acceptability Threshold)
 Ref : 
   feprx : 53.0
-  feptx_prec : 16.0
+  feptx_prec : 20.0
   feptx_ofdm : 37.0
   feptx_total : 62.0
-  L1 Tx processing : 155.0
-  DLSCH encoding : 113.0
-  L1 Rx processing : 194.0
-  PUSCH inner-receiver : 100.0
-  PUSCH decoding : 150.0
-  Schedule Response : 10.0
-  DL & UL scheduling timing : 9.0
-  UL Indication : 20.0
+  L1 Tx processing : 170.0
+  DLSCH encoding : 118.0
+  L1 Rx processing : 223.0
+  PUSCH inner-receiver : 107.0
+  PUSCH decoding : 170.0
+  Schedule Response : 15.0
+  DL & UL scheduling timing : 10.0
+  UL Indication : 27.0
 Threshold :
   feprx : 1.25
   feptx_prec : 1.25
diff --git a/ci-scripts/xml_files/gnb_phytest_usrp_run.xml b/ci-scripts/xml_files/gnb_phytest_usrp_run.xml
index 249908dd76..9a184c9e52 100644
--- a/ci-scripts/xml_files/gnb_phytest_usrp_run.xml
+++ b/ci-scripts/xml_files/gnb_phytest_usrp_run.xml
@@ -21,7 +21,7 @@
 
 -->
 <testCaseList>
-	<htmlTabRef>gNB-PHY-Test</htmlTabRef>
+	<htmlTabRef>gNB-PHY-Test-40</htmlTabRef>
 	<htmlTabName>Timing phytest 40 MHz</htmlTabName>
 	<htmlTabIcon>tasks</htmlTabIcon>
 	<repeatCount>1</repeatCount>
diff --git a/ci-scripts/xml_files/gnb_phytest_usrp_run_60.xml b/ci-scripts/xml_files/gnb_phytest_usrp_run_60.xml
index 07a4b484c0..d46c1c0caf 100644
--- a/ci-scripts/xml_files/gnb_phytest_usrp_run_60.xml
+++ b/ci-scripts/xml_files/gnb_phytest_usrp_run_60.xml
@@ -21,7 +21,7 @@
 
 -->
 <testCaseList>
-  <htmlTabRef>gNB-PHY-Test</htmlTabRef>
+  <htmlTabRef>gNB-PHY-Test-60</htmlTabRef>
   <htmlTabName>Timing phytest 60 MHz</htmlTabName>
   <htmlTabIcon>tasks</htmlTabIcon>
   <repeatCount>1</repeatCount>