* add RRH gateway module, IQ transports, and its gtkwave template (experimental)

* update ethernet library and common lib 
* update runtime values of the lte-softmodem tx and rx threads based on an empirical model


git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7709 818b1a75-f10b-46b9-bf7c-635c3b92a50f

cmake_targets/CMakeLists.txt

@@ -362,13 +362,13 @@ elseif (${RF_BOARD} STREQUAL "OAI_BLADERF")
     ${OPENAIR_TARGETS}/ARCH/BLADERF/USERSPACE/LIB/bladerf_lib.c
     )
   LINK_DIRECTORIES("/usr/lib/x86_64-linux-gnu/")
-  set(option_HW_lib "bladeRF")
   
 elseif (${RF_BOARD} STREQUAL "ETHERNET")
   include_directories ("${OPENAIR_TARGETS}/ARCH/ETHERNET/USERSPACE/LIB")
   set(HW_SOURCE ${HW_SOURCE}
     ${OPENAIR_TARGETS}/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c
     )
+  set(LOWLATENCY True)
   
 elseif (${RF_BOARD} STREQUAL "CPRIGW")
   set(HW_SOURCE ${HW_SOURCE}
@@ -1567,6 +1567,8 @@ add_executable(lte-softmodem-nos1
   ${OPENAIR1_DIR}/SIMULATION/TOOLS/taus.c
   ${OPENAIR_TARGETS}/SIMU/USER/init_lte.c
   ${OPENAIR_TARGETS}/COMMON/create_tasks.c
+  #${OPENAIR2_DIR}/RRC/NAS/nas_config.c # enable if you want rrc to mount ip interface
+  #${OPENAIR2_DIR}/RRC/NAS/rb_config.c
   ${OPENAIR1_DIR}/SIMULATION/ETH_TRANSPORT/netlink_init.c
   ${HW_SOURCE}
   ${RTAI_SOURCE}
@@ -1711,6 +1713,36 @@ target_link_libraries (oai_sgw
   )
 endif(MESSAGE_CHART_GENERATOR)
 
+
+# rrh
+################################
+set(DRIVER2013)
+
+#Note: only on RF type is currently supported for RRH
+add_executable(rrh_gw
+  ${OPENAIR_TARGETS}/RT/USER/rrh_gw.c
+  ${OPENAIR_TARGETS}/RT/USER/eNB_transport_IQ.c
+  ${OPENAIR_TARGETS}/RT/USER/UE_transport_IQ.c
+  ${OPENAIR_TARGETS}/RT/USER/rt_wrapper.c	
+  ${OPENAIR_TARGETS}/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.c 
+  ${HW_SOURCE}
+  )
+# assert and common_lib.h
+target_include_directories(rrh_gw PRIVATE  ${OPENAIR_DIR}/common/utils/itti ${OPENAIR_TARGETS}/ARCH/COMMON ${OPENAIR_TARGETS}/ARCH/ETHERNET/USERSPACE/LIB/ )
+
+target_link_libraries(rrh_gw
+  -Wl,--start-group
+  UTIL LFDS  
+  -Wl,--end-group )
+target_link_libraries (rrh_gw rt pthread m )
+target_link_libraries (rrh_gw ${option_HW_lib} ${LIBBOOST_LIBRARIES} )
+
+#Message("-- default_HW_lib=ETHERNET") # only in case of RRH
+Message("-- option_HW_lib=${option_HW_lib}")
+Message("-- HW_SOURCE=${HW_SOURCE}")
+
+
+
 # USIM process
 #################
 #add_executable(usim

cmake_targets/autotests/run_compilation_autotests.bash

@@ -34,7 +34,7 @@ mkdir -p $tdir/bin $tdir/log
 
 updated=$(svn st -q $OPENAIR_DIR)
 if [ "$updated" != "" ] ; then
-	echo_warning "some files are not in svn: $updated"
+	echo_warning "some files are not in svn:\n $updated"
 fi
 
 cd $tdir 
@@ -83,5 +83,9 @@ test_compile \
     test.0120 nasmesh \
     CMakeFiles/nasmesh/nasmesh.ko $tdir/bin/nasmesh.ko 
 
+test_compile \
+    test.0130 rrh_gw \
+    rrh_gw $tdir/bin/rrh_gw
+
 # write the test results into a file
 xUnit_write "$tdir/log/compilation_autotests.xml"

cmake_targets/autotests/test.0130/CMakeLists.txt

+cmake_minimum_required(VERSION 2.8)
+set(ENABLE_VCD_FIFO False )
+set(ENABLE_ITTI False )
+set(RF_BOARD "ETHERNET")
+set(PACKAGE_NAME "\"rrh_gw\"")
+include(${CMAKE_CURRENT_SOURCE_DIR}/../../CMakeLists.txt)

cmake_targets/build_oai

@@ -75,11 +75,13 @@ Options
    Makes the UE specific parts (ue_ip, usim, nvram) 
 --EPC
    Makes the EPC (MME-SPGW, HSS)
+--RRH
+   Makes the RRH
 -r | --3gpp-release
    default is Rel10,
    Rel8 limits the implementation to 3GPP Release 8 version
 -w | --hardware
-   EXMIMO (Default), USRP, BLADERF, None
+   EXMIMO (Default), USRP, BLADERF, ETHERNET, None
    Adds this RF board support (in external packages installation and in compilation)
 --oaisim
    Makes the oaisim simulator. Hardware will be defaulted to "NONE".
@@ -147,6 +149,10 @@ function main() {
             EPC=1
             echo_info "Will compile EPC"
             shift;;
+       --RRH)
+            RRH=1
+            echo_info "Will compile RRH"
+            shift;;
        -r | --3gpp-release)
             REL=$2
             echo_info "setting release to: $REL"
@@ -497,6 +503,32 @@ function main() {
 	#  oaisim_mme $dbin/oaisim_mme.$REL
   fi
 
+  # RRH compilation
+  ##################
+  if [ "$RRH" = "1" ] ; then
+    echo_info "Compiling RRH"
+    if [  $HW == "ETHERNET" ] ; then 
+	echo_info "RF frontend for RRH is not defined. This mode is used for testing (loopback)."
+    elif [ $HW != "EXMIMO" -a $HW != "OAI_USRP" -a $HW != "OAI_BLADERF" ] ; then 
+	echo_fatal "Hardware not defined ($HW)"
+    fi
+    cmake_file=$DIR/rrh_gw/CMakeLists.txt
+    echo "cmake_minimum_required(VERSION 2.8)"   >   $cmake_file
+    echo "set(ENABLE_VCD_FIFO $VCD_TIMING )"     >>  $cmake_file
+    echo "set(ENABLE_ITTI False )"     					 >>  $cmake_file
+    echo "set(RF_BOARD \"${HW}\")"               >>  $cmake_file
+    echo 'set(PACKAGE_NAME "\"rrh_gw\"")' >>  $cmake_file
+    echo 'include(${CMAKE_CURRENT_SOURCE_DIR}/../CMakeLists.txt)' >> $cmake_file
+
+    [ "$CLEAN" = "1" ] && rm -rf $DIR/rrh_gw/build
+    mkdir -p $DIR/rrh_gw/build
+    cd $DIR/rrh_gw/build
+    cmake ..
+    compilations \
+      rrh_gw rrh_gw \
+      rrh_gw $dbin/rrh_gw
+  fi
+
   # EPC compilation
   ##################
   if [ "$EPC" = "1" ] ; then

cmake_targets/rrh_gw/CMakeLists.txt

+cmake_minimum_required(VERSION 2.8)
+set(ENABLE_VCD_FIFO False )
+set(ENABLE_ITTI False )
+set(RF_BOARD "ETHERNET")
+set(PACKAGE_NAME "\"rrh_gw\"")
+include(${CMAKE_CURRENT_SOURCE_DIR}/../CMakeLists.txt)

openair1/PHY/TOOLS/time_meas.c

@@ -39,10 +39,12 @@ double get_cpu_freq_GHz(void) {
 
   time_stats_t ts = {0};
   reset_meas(&ts);
-  start_meas(&ts);
+  ts.trials++;
+  ts.in = rdtsc_oai();
   sleep(1);
-  stop_meas(&ts);
+  ts.diff = (rdtsc_oai()-ts.in);
   cpu_freq_GHz = (double)ts.diff/1000000000;
+  printf("CPU Freq is %f \n", cpu_freq_GHz);
   return cpu_freq_GHz; 
 }
 

openair1/PHY/TOOLS/time_meas.h

@@ -43,8 +43,8 @@ double cpu_freq_GHz;
 typedef struct {
 
   long long in;
-  long long diff_now;
   long long diff;
+  long long diff_now;
   long long p_time; /*!< \brief absolute process duration */
   long long diff_square; /*!< \brief process duration square */
   long long max;
@@ -116,6 +116,7 @@ static inline void stop_meas(time_stats_t *ts)
     
     ts->diff_now = (out-ts->in);
     
+    ts->diff_now = (out-ts->in);
     ts->diff += (out-ts->in);
     /// process duration is the difference between two clock points
     ts->p_time = (out-ts->in);
@@ -127,25 +128,17 @@ static inline void stop_meas(time_stats_t *ts)
   }
 }
 
-static inline void reset_meas(time_stats_t *ts)
-{
+static inline void reset_meas(time_stats_t *ts) {
+
   static int cpu_freq_set=0;
   
-  if (opp_enabled) {
   ts->trials=0;
-    ts->diff_now=0;
   ts->diff=0;
+  ts->diff_now=0;
   ts->p_time=0;
   ts->diff_square=0;
   ts->max=0;
   
-    if (cpu_freq_set == 0) {
-      cpu_freq_set = 1;
-      get_cpu_freq_GHz();
-      printf("CPU Freq is %f \n", cpu_freq_GHz);
-    } 
-  }
-  
 }
 
 static inline void copy_meas(time_stats_t *dst_ts,time_stats_t *src_ts)

openair2/UTIL/LOG/log.c

@@ -399,6 +399,14 @@ int logInit (void)
   g_log->log_component[SCTP].filelog = 0;
   g_log->log_component[SCTP].filelog_name = "";
  
+  g_log->log_component[RRH].name = "RRH";
+  g_log->log_component[RRH].level = LOG_EMERG;
+  g_log->log_component[RRH].flag = LOG_MED;
+  g_log->log_component[RRH].interval = 1;
+  g_log->log_component[RRH].fd = 0;
+  g_log->log_component[RRH].filelog = 0;
+  g_log->log_component[RRH].filelog_name = "";
+  
   g_log->level2string[LOG_EMERG]         = "G"; //EMERG
   g_log->level2string[LOG_ALERT]         = "A"; // ALERT
   g_log->level2string[LOG_CRIT]          = "C"; // CRITIC

openair2/UTIL/LOG/log.h

@@ -267,6 +267,7 @@ typedef enum {
   TMR,
   USIM,
   LOCALIZE,
+  RRH,
   MAX_LOG_COMPONENTS,
 }
 comp_name_t;

openair2/UTIL/LOG/vcd_signal_dumper.c

@@ -77,6 +77,8 @@ struct vcd_module_s {
 const char* eurecomVariablesNames[] = {
   "frame_number_TX_eNB",
   "frame_number_RX_eNB",
+  "runtime_TX_eNB",
+  "runtime_RX_eNB",
   "frame_number_TX_UE",
   "frame_number_RX_UE",
   "slot_number_TX_UE",
@@ -94,6 +96,13 @@ const char* eurecomVariablesNames[] = {
   "rxcnt",
   "trx_ts",
   "trx_tst",
+  "tx_ts",
+  "rx_ts",
+  "hw_cnt_rx",
+  "lhw_cnt_rx",
+  "hw_cnt_tx",
+  "lhw_cnt_tx",
+  "pck_rx",
   "dummy_dump",
   "itti_send_msg",
   "itti_poll_msg",
@@ -133,6 +142,15 @@ const char* eurecomFunctionsNames[] = {
   "ue_thread_tx",
   "ue_thread_rx",
 
+ /* RRH signals  */ 
+  "eNB_tx",
+  "eNB_rx",
+  "eNB_trx",
+  "eNB_tm",
+  "eNB_rx_sleep",
+  "eNB_tx_sleep",
+  "eNB_proc_sleep",
+
   /* PHY signals  */
   "ue_synch",
   "ue_slot_fep",

openair2/UTIL/LOG/vcd_signal_dumper.h

@@ -49,6 +49,8 @@
 typedef enum {
   VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX_ENB = 0,
   VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX_ENB,
+  VCD_SIGNAL_DUMPER_VARIABLES_RUNTIME_TX_ENB,
+  VCD_SIGNAL_DUMPER_VARIABLES_RUNTIME_RX_ENB,
   VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX_UE,
   VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX_UE,
   VCD_SIGNAL_DUMPER_VARIABLES_SLOT_NUMBER_TX_UE,
@@ -66,6 +68,13 @@ typedef enum {
   VCD_SIGNAL_DUMPER_VARIABLES_RXCNT,
   VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS,
   VCD_SIGNAL_DUMPER_VARIABLES_TRX_TST,
+  VCD_SIGNAL_DUMPER_VARIABLES_TX_TS,
+  VCD_SIGNAL_DUMPER_VARIABLES_RX_TS,
+  VCD_SIGNAL_DUMPER_VARIABLES_RX_HWCNT,
+  VCD_SIGNAL_DUMPER_VARIABLES_RX_LHWCNT,
+  VCD_SIGNAL_DUMPER_VARIABLES_TX_HWCNT,
+  VCD_SIGNAL_DUMPER_VARIABLES_TX_LHWCNT,
+  VCD_SIGNAL_DUMPER_VARIABLES_RX_PCK,
   VCD_SIGNAL_DUMPER_VARIABLES_DUMMY_DUMP,
   VCD_SIGNAL_DUMPER_VARIABLE_ITTI_SEND_MSG,
   VCD_SIGNAL_DUMPER_VARIABLE_ITTI_POLL_MSG,
@@ -107,6 +116,16 @@ typedef enum {
   VCD_SIGNAL_DUMPER_FUNCTIONS_UE_THREAD_TX,
   VCD_SIGNAL_DUMPER_FUNCTIONS_UE_THREAD_RX,
 
+  /* RRH signals  */
+ 
+  VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_TX,
+  VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_RX,
+  VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_TRX,
+  VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_TM,
+  VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_RX_SLEEP,
+  VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_TX_SLEEP,
+  VCD_SIGNAL_DUMPER_FUNCTIONS_eNB_PROC_SLEEP,
+
   /* PHY signals  */
   VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SYNCH,
   VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SLOT_FEP,

targets/ARCH/BLADERF/USERSPACE/LIB/bladerf_lib.c

@@ -132,7 +132,7 @@ int trx_brf_end(openair0_device *device) {
   return 0;
 }
 
-//int openair0_device_brf_init(openair0_device *device, openair0_config_t *openair0_cfg) {
+//int  openair0_dev_init_bladerf(openair0_device *device, openair0_config_t *openair0_cfg) {
 int openair0_device_init(openair0_device *device, openair0_config_t *openair0_cfg) {
 
   int status;
@@ -263,15 +263,27 @@ int openair0_device_init(openair0_device *device, openair0_config_t *openair0_cf
   return 0;
 }
 
-void brf_error(int status) {
+int brf_error(int status) {
   
   exit(-1);
+  //return 1; // or status error code
 }
 
 int openair0_stop(int card) {
 
   return(0);
 
+}
+
+int openair0_print_stats(openair0_device* device) {
+
+  return(0);
+
+}
+int openair0_reset_stats(openair0_device* device) {
+
+  return(0);
+
 }
 int openair0_set_frequencies(openair0_device* device, openair0_config_t *openair0_cfg,int dummy) {
   return 0;

targets/ARCH/BLADERF/USERSPACE/LIB/bladerf_lib.h

@@ -78,4 +78,4 @@ typedef struct {
  * func prototypes 
  */
 
-void brf_error(int status);
+int brf_error(int status);

targets/ARCH/COMMON/common_lib.h

@@ -26,16 +26,23 @@
    Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
 
  *******************************************************************************/
+/*! \file common_lib.h 
+ * \brief common APIs for different RF frontend device 
+ * \author HongliangXU, Navid Nikaein
+ * \date 2015
+ * \version 0.2
+ * \company Eurecom
+ * \maintainer:  navid.nikaein@eurecom.fr
+ * \note
+ * \warning
+ */
 
-/** common_lib.h
-*
-* Author: HongliangXU : hong-liang-xu@agilent.com
-*/
 #ifndef COMMON_LIB_H
 #define COMMON_LIB_H
 #include <stdint.h>
 
 typedef int64_t openair0_timestamp;
+typedef volatile int64_t openair0_vtimestamp;
 typedef struct openair0_device_t openair0_device;
 /* structrue holds the parameters to configure USRP devices
  */
@@ -56,10 +63,18 @@ typedef struct {
   int Mod_id;
   // device log level
   int log_level;
+  //! number of downlink resource blocks
+  int num_rb_dl;
+  //! number of samples per frame 
+  unsigned int  samples_per_frame;
   //! the sample rate for both transmit and receive.
   double sample_rate;
   //! number of samples per RX/TX packet (USRP + Ethernet)
   int samples_per_packet;
+  // delay in sending samples (write)  due to hardware access, softmodem processing and fronthaul delay if exist
+  int   	tx_delay;
+  //! adjust the position of the samples after delay when sending   
+  unsigned int	tx_forward_nsamps;
   //! number of RX channels (=RX antennas)
   int rx_num_channels;
   //! number of TX channels (=TX antennas)
@@ -84,9 +99,14 @@ typedef struct {
   //! Auto calibration flag
   int autocal[4];
   //! RRH IP addr for Ethernet interface
-  char *rrh_ip;
+  char *remote_ip;
   //! RRH port number for Ethernet interface
-  int rrh_port;
+  int remote_port;
+  //! my IP addr for Ethernet interface (eNB/BBU, UE)
+  char *my_ip;
+  //! my port number for Ethernet interface (eNB/BBU, UE)
+  int my_port;
+
 } openair0_config_t;
 
 typedef struct {
@@ -98,10 +118,42 @@ typedef struct {
 
 
 
+/*!\brief device type */
+typedef enum {
+  MIN_DEV_TYPE = 0,
+  /*!\brief device is ETH */
+  ETH_IF,
+  /*!\brief device is ExpressMIMO */
+  EXMIMO_IF,
+  /*!\brief device is USRP*/
+  USRP_IF,
+  /*!\brief device is BLADE RF*/
+  BLADERF_IF,
+  /*!\brief device is NONE*/
+  NONE_IF,
+  MAX_DEV_TYPE
+
+} dev_type_t;
+
+/*!\brief  type */
+typedef enum {
+  MIN_FUNC_TYPE = 0,
+  BBU_FUNC,
+  RRH_FUNC,
+  MAX_FUNC_TYPE
+
+}func_type_t;
+
 struct openair0_device_t {
   /* Module ID of this device */
   int Mod_id;
 
+  /* Type of this device */
+  func_type_t func_type;
+  
+  /* Type of this device */
+  dev_type_t type;
+
   /* RF frontend parameters set by application */
   openair0_config_t openair0_cfg;
 
@@ -113,11 +165,20 @@ struct openair0_device_t {
   /* Called to start the transceiver. Return 0 if OK, < 0 if error */
   int (*trx_start_func)(openair0_device *device);
 
+  /* Called to initiate transceiver threads */
+  void (*trx_thread_func)(openair0_device *device, unsigned int rt_period, uint8_t RT_flag,uint8_t NRT_flag);
+    
+  /* Called to request connection from the transceiver/RRH. Return 0 if OK, < 0 if error */
+  int (*trx_request_func)(openair0_device *device);
+
+  /* Called to reply back to connection state to eNB/BBU. Return 0 if OK, < 0 if error */
+  int (*trx_reply_func)(openair0_device *openair0);
+
   /* Write 'nsamps' samples on each channel from buffers. buff[0] is the array for
    * the first channel. timestamp if the time (in samples) at which the first sample
    * MUST be sent
    * use flags = 1 to send as timestamp specfied*/
-  void (*trx_write_func)(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int cc, int flags);
+  int (*trx_write_func)(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps,int antenna_id, int flags);
 
   /*! \brief Receive samples from hardware.
    * Read \ref nsamps samples from each channel to buffers. buff[0] is the array for
@@ -130,7 +191,19 @@ struct openair0_device_t {
    * \param cc Number of channels. If cc == 1, only buff[0] is filled with samples.
    * \returns the number of sample read
    */
-  int (*trx_read_func)(openair0_device *device, openair0_timestamp *ptimestamp, void **buff, int nsamps,int cc);
+  int (*trx_read_func)(openair0_device *device, openair0_timestamp *ptimestamp, void **buff, int nsamps,int antenna_id);
+
+  /*! \brief print the device statistics  
+   * \param device the hardware to use
+   * \returns  0 on success
+   */
+  int (*trx_get_stats_func)(openair0_device *device);
+
+  /*! \brief Reset device statistics  
+   * \param device the hardware to use
+   * \returns 0 in success 
+   */
+  int (*trx_reset_stats_func)(openair0_device *device);
 
   /* Terminate operation of the transceiver -- free all associated resources */
   void (*trx_end_func)(openair0_device *device);
@@ -142,15 +215,33 @@ extern "C"
 {
 #endif
 
-/* return 0 if OK, < 0 if error */
-  int openair0_device_init(openair0_device* device, openair0_config_t *openair0_cfg);
-  openair0_timestamp get_usrp_time(openair0_device *device);
-  int openair0_set_frequencies(openair0_device* device, openair0_config_t *openair0_cfg,int exmimo_dump_config);
-  int openair0_set_rx_frequencies(openair0_device* device, openair0_config_t *openair0_cfg);
+/* return 0 if OK */
+
+int openair0_device_init(openair0_device* device, openair0_config_t *openair0_cfg);
+openair0_timestamp get_usrp_time(openair0_device *device);
+
+//EXMIMO
+//int openair0_dev_init_exmimo(openair0_device *device, openair0_config_t *openair0_cfg);
+//USPRP
+//int openair0_dev_init_usrp(openair0_device* device, openair0_config_t *openair0_cfg);
+//BLADERF
+//int openair0_dev_init_bladerf(openair0_device* device, openair0_config_t *openair0_cfg);
+
+//ETHERNET
+int openair0_dev_init_eth(openair0_device *device, openair0_config_t *openair0_cfg);
+
+int openair0_set_frequencies(openair0_device* device, openair0_config_t *openair0_cfg,int exmimo_dump_config);
+
+int openair0_set_rx_frequencies(openair0_device* device, openair0_config_t *openair0_cfg);
+
+int openair0_set_gains(openair0_device* device, openair0_config_t *openair0_cfg);
+
+int openair0_print_stats(openair0_device* device);
+
+int openair0_reset_stats(openair0_device* device);
 
-  int openair0_set_gains(openair0_device* device, openair0_config_t *openair0_cfg);
+int openair0_stop(int card);
 
-  int openair0_stop(int card);
 #ifdef __cplusplus
 }
 #endif

targets/ARCH/ETHERNET/USERSPACE/LIB/ethernet_lib.h

+/*******************************************************************************
+    OpenAirInterface
+    Copyright(c) 1999 - 2014 Eurecom
+
+    OpenAirInterface is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+
+    OpenAirInterface is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenAirInterface.The full GNU General Public License is
+    included in this distribution in the file called "COPYING". If not,
+    see <http://www.gnu.org/licenses/>.
+
+   Contact Information
+   OpenAirInterface Admin: openair_admin@eurecom.fr
+   OpenAirInterface Tech : openair_tech@eurecom.fr
+   OpenAirInterface Dev  : openair4g-devel@eurecom.fr
+
+   Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
+
+ *******************************************************************************/
+/*! \file ethernet_lib.h
+ * \brief API to stream I/Q samples over standard ethernet
+ * \author Katerina Trilyraki, Navid Nikaein
+ * \date 2015
+ * \version 0.2
+ * \company Eurecom
+ * \maintainer:  navid.nikaein@eurecom.fr
+ * \note
+ * \warning 
+ */
+
 #include <arpa/inet.h>
 #include <linux/if_packet.h>
 #include <stdio.h>
@@ -8,8 +47,75 @@
 #include <net/if.h>
 #include <netinet/ether.h>
 
-int ethernet_socket_init(int Mod_id, char *dest_ip,int dest_port);
 
-int ethernet_write_data(int Mod_id, const void *buff, int nsamps,int cc);
+typedef struct {
+
+  // opaque eth data struct
+  //struct eth_if *dev;
+  // An empty ("") or NULL device identifier will result in the first encountered device being opened (using the first discovered backend)
+
+  int sockfd[4];
+  struct sockaddr_in dest_addr[4];
+
+
+  unsigned int buffer_size;
+  unsigned int timeout_ns;
+
+  //struct eth_metadata meta_rx;
+  //struct eth_metadata meta_tx;
+
+  unsigned int sample_rate;
+  // time offset between transmiter timestamp and receiver timestamp;
+  double tdiff;
+  // use brf_time_offset to get this value
+  int tx_forward_nsamps; //166 for 20Mhz
+
+
+  // --------------------------------
+  // Debug and output control
+  // --------------------------------
+  int num_underflows;
+  int num_overflows;
+  int num_seq_errors;
+  int num_rx_errors;
+  int num_tx_errors;
+
+  uint64_t tx_actual_nsamps; // actual number of samples transmitted
+  uint64_t rx_actual_nsamps;
+  uint64_t tx_nsamps; // number of planned samples
+  uint64_t rx_nsamps;
+  uint64_t tx_count; // number pf packets
+  uint64_t rx_count;
+  //openair0_timestamp rx_timestamp;
+
+} eth_state_t;
+
+#define 	ETH_META_STATUS_OVERRUN   (1 << 0)
+#define 	ETH_META_STATUS_UNDERRUN  (1 << 1)
+
+struct eth_meta_data{
+	uint64_t 	timestamp;
+	uint32_t 	flags;	 
+	uint32_t 	status;
+ 	unsigned int 	actual_count;
+};
+
+
+typedef struct {
+	/* packet's timestamp */
+  openair0_timestamp timestamp;
+  /* variable declared for alignment purposes (sample size=32 bit)  */
+  int16_t 	not_used;
+  /* antenna port used to resynchronize*/
+  int16_t 	antenna_id;
+} header_t;
+
+
+
+int ethernet_socket_init(openair0_device *device);
+
+int ethernet_write_data(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps,int antenna_id);
+
+int ethernet_read_data(openair0_device *device,openair0_timestamp *timestamp,void **buff, int nsamps,int antenna_id);
 
-int ethernet_read_data(int Mod_id,void *buff, int nsamps,int cc);
+void ethernet_socket_opt (openair0_device *device);

targets/ARCH/EXMIMO/USERSPACE/LIB/openair0_lib.c

@@ -247,6 +247,7 @@ int openair0_stop_without_reset(int card)
 #define MY_RF_MODE      (RXEN + TXEN + TXLPFNORM + TXLPFEN + TXLPF25 + RXLPFNORM + RXLPFEN + RXLPF25 + LNA1ON +LNAMax + RFBBNORM + DMAMODE_RX + DMAMODE_TX)
 #define RF_MODE_BASE    (LNA1ON + RFBBNORM)
 
+//int openair0_dev_init_exmimo(openair0_device *device, openair0_config_t *openair0_cfg) {
 int openair0_device_init(openair0_device *device, openair0_config_t *openair0_cfg) {
 
   // Initialize card

targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp

@@ -44,8 +44,10 @@
 #include <complex>
 #include <fstream>
 #include <cmath>
+
 #include "common_lib.h"
 
+
 typedef struct
 {
 
@@ -121,7 +123,7 @@ static void trx_usrp_end(openair0_device *device)
 	s->tx_stream->send("", 0, s->tx_md);
 	s->tx_md.end_of_burst = false;
 }
-static void trx_usrp_write(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int cc, int flags)
+static int trx_usrp_write(openair0_device *device, openair0_timestamp timestamp, void **buff, int nsamps, int cc, int flags)
 {
   usrp_state_t *s = (usrp_state_t*)device->priv;
   s->tx_md.time_spec = uhd::time_spec_t::from_ticks(timestamp, s->sample_rate);
@@ -138,6 +140,8 @@ static void trx_usrp_write(openair0_device *device, openair0_timestamp timestamp
   else
     s->tx_stream->send(buff[0], nsamps, s->tx_md);
   s->tx_md.start_of_burst = false;
+
+  return 0;
 }
 
 static int trx_usrp_read(openair0_device *device, openair0_timestamp *ptimestamp, void **buff, int nsamps, int cc)
@@ -195,7 +199,7 @@ static bool is_equal(double a, double b)
   return std::fabs(a-b) < std::numeric_limits<double>::epsilon();
 }
 
-int openair0_set_frequencies(openair0_device* device, openair0_config_t *openair0_cfg,int dummy) {
+int openair0_set_frequencies(openair0_device* device, openair0_config_t *openair0_cfg, int dummy) {
 
   usrp_state_t *s = (usrp_state_t*)device->priv;
 
@@ -237,7 +241,17 @@ int openair0_stop(int card) {
   return(0);
 
 }
+int openair0_print_stats(openair0_device* device) {
+
+  return(0);
 
+}
+int openair0_reset_stats(openair0_device* device) {
+
+  return(0);
+
+}
+//int openair0_dev_init_usrp(openair0_device* device, openair0_config_t *openair0_cfg)
 int openair0_device_init(openair0_device* device, openair0_config_t *openair0_cfg)
 {
   uhd::set_thread_priority_safe(1.0);

targets/RT/USER/lte-ue.c

@@ -119,8 +119,8 @@ extern int oai_exit;
 extern int32_t **rxdata;
 extern int32_t **txdata;
 
-extern unsigned int tx_forward_nsamps;
-extern int tx_delay;
+//extern unsigned int tx_forward_nsamps;
+//extern int tx_delay;
 
 extern int rx_input_level_dBm;
 extern uint8_t exit_missed_slots;
@@ -583,9 +583,9 @@ static void *UE_thread_tx(void *arg)
 
   /* This creates a 1ms reservation every 10ms period*/
   attr.sched_policy = SCHED_DEADLINE;
-  attr.sched_runtime = 1 * 900000;  // each tx thread requires .5ms to finish its job
-  attr.sched_deadline =1 * 1000000; // each tx thread will finish within 1ms
-  attr.sched_period = 1 * 1000000; // each tx thread has a period of 1ms from the starting point
+  attr.sched_runtime  = (0.9 * 100) * 10000;  // each tx thread requires .5ms to finish its job
+  attr.sched_deadline = (1   * 100) * 10000; // each tx thread will finish within 1ms
+  attr.sched_period   = (1   * 100) * 10000; // each tx thread has a period of 1ms from the starting point
 
 
   if (sched_setattr(0, &attr, flags) < 0 ) {
@@ -732,9 +732,9 @@ static void *UE_thread_rx(void *arg)
 
   // This creates a .5ms reservation every 1ms period
   attr.sched_policy = SCHED_DEADLINE;
-  attr.sched_runtime = 1 * 900000;  // each rx thread requires 1ms to finish its job
-  attr.sched_deadline =1 * 1000000; // each rx thread will finish within 1ms
-  attr.sched_period = 1 * 1000000; // each rx thread has a period of 1ms from the starting point
+  attr.sched_runtime   = (0.9 * 100) * 10000;//900000;  // each rx thread requires 1ms to finish its job
+  attr.sched_deadline  = (1   * 100) * 10000; // each rx thread will finish within 1ms
+  attr.sched_period    = (1   * 100) * 10000; // each rx thread has a period of 1ms from the starting point
 
   if (sched_setattr(0, &attr, flags) < 0 ) {
     perror("[SCHED] UE_thread_rx : sched_setattr failed\n");
@@ -938,7 +938,7 @@ void *UE_thread(void *arg)
   static int UE_thread_retval;
   PHY_VARS_UE *UE = PHY_vars_UE_g[0][0];
   int spp = openair0_cfg[0].samples_per_packet;
-  int slot=1, frame=0, hw_subframe=0, rxpos=0, txpos=spp*tx_delay;
+  int slot=1, frame=0, hw_subframe=0, rxpos=0, txpos=spp*openair0_cfg[0].tx_delay;
   int dummy[2][spp];
   int dummy_dump = 0;
   int tx_enabled = 0;
@@ -972,9 +972,9 @@ void *UE_thread(void *arg)
 
   // This creates a .5 ms  reservation
   attr.sched_policy = SCHED_DEADLINE;
-  attr.sched_runtime  = 0.25 * 1000000;
-  attr.sched_deadline = 0.25 * 1000000;
-  attr.sched_period   = 0.5 * 1000000;
+  attr.sched_runtime  = (0.25 * 100) * 10000;
+  attr.sched_deadline = (0.25 * 100) * 10000;
+  attr.sched_period   = (0.5 * 100)  * 10000;
 
   if (sched_setattr(0, &attr, flags) < 0 ) {
     perror("[SCHED] main eNB thread: sched_setattr failed\n");
@@ -1056,7 +1056,7 @@ void *UE_thread(void *arg)
           txp[i] = (void*)&txdata[i][txpos];
 
         openair0.trx_write_func(&openair0,
-                                (timestamp+spp*tx_delay-tx_forward_nsamps),
+                                (timestamp+spp*openair0_cfg[0].tx_delay-openair0_cfg[0].tx_forward_nsamps),
                                 txp,
 				spp - ((first_rx==1) ? rx_off_diff : 0),
                                 UE->lte_frame_parms.nb_antennas_tx,
@@ -1353,9 +1353,9 @@ void *UE_thread(void *arg)
 
   // This creates a .25 ms  reservation
   attr.sched_policy = SCHED_DEADLINE;
-  attr.sched_runtime  = 0.1 * 1000000;
-  attr.sched_deadline = 0.25 * 1000000;
-  attr.sched_period   = 0.5 * 1000000;
+  attr.sched_runtime  = (0.1  * 100) * 10000;
+  attr.sched_deadline = (0.25 * 100) * 10000;
+  attr.sched_period   = (0.5  * 100) * 10000;
 
   // pin the UE main thread to CPU0
   // if (pthread_setaffinity_np(pthread_self(), sizeof(mask),&mask) <0) {

targets/RT/USER/rrh.gtkw

+[*]
+[*] GTKWave Analyzer v3.3.58 (w)1999-2014 BSI
+[*] Thu Jul  9 09:53:25 2015
+[*]
+[dumpfile] "/tmp/openair_dump_eNB.vcd"
+[dumpfile_mtime] "Thu Jul  9 09:52:29 2015"
+[dumpfile_size] 170586112
+[savefile] "/home/sud/openair4G/targets/RT/USER/eNB2.gtkw"
+[timestart] 16177999000
+[size] 1535 876
+[pos] -1 -1
+*-17.749426 16178576148 -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
+[sst_width] 224
+[signals_width] 230
+[sst_expanded] 1
+[sst_vpaned_height] 230
+@28
+[color] 1
+functions.eNB_rx
+functions.eNB_rx_sleep
+[color] 7
+functions.trx_write
+@c00024
+variables.rxcnt[63:0]
+@28
+(0)variables.rxcnt[63:0]
+(1)variables.rxcnt[63:0]
+(2)variables.rxcnt[63:0]
+(3)variables.rxcnt[63:0]
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+(21)variables.rxcnt[63:0]
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+(24)variables.rxcnt[63:0]
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+(27)variables.rxcnt[63:0]
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+(32)variables.rxcnt[63:0]
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+(35)variables.rxcnt[63:0]
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+(37)variables.rxcnt[63:0]
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+(39)variables.rxcnt[63:0]
+(40)variables.rxcnt[63:0]
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+(42)variables.rxcnt[63:0]
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+(44)variables.rxcnt[63:0]
+(45)variables.rxcnt[63:0]
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+(47)variables.rxcnt[63:0]
+(48)variables.rxcnt[63:0]
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+(52)variables.rxcnt[63:0]
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+(54)variables.rxcnt[63:0]
+(55)variables.rxcnt[63:0]
+(56)variables.rxcnt[63:0]
+(57)variables.rxcnt[63:0]
+(58)variables.rxcnt[63:0]
+(59)variables.rxcnt[63:0]
+(60)variables.rxcnt[63:0]
+(61)variables.rxcnt[63:0]
+(62)variables.rxcnt[63:0]
+(63)variables.rxcnt[63:0]
+@1401200
+-group_end
+@28
+[color] 1
+functions.eNB_tx
+functions.eNB_tx_sleep
+[color] 7
+functions.trx_read
+@24
+variables.txcnt[63:0]
+variables.rx_ts[63:0]
+variables.tx_ts[63:0]
+variables.pck_rx[63:0]
+variables.hw_cnt_rx[63:0]
+variables.lhw_cnt_rx[63:0]
+variables.hw_frame[63:0]
+@28
+functions.eNB_tm
+@29
+functions.eNB_trx
+[pattern_trace] 1
+[pattern_trace] 0

targets/RT/USER/rrh_gw.h

+/*******************************************************************************
+    OpenAirInterface
+    Copyright(c) 1999 - 2014 Eurecom
+
+    OpenAirInterface is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+
+    OpenAirInterface is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenAirInterface.The full GNU General Public License is
+    included in this distribution in the file called "COPYING". If not,
+    see <http://www.gnu.org/licenses/>.
+
+   Contact Information
+   OpenAirInterface Admin: openair_admin@eurecom.fr
+   OpenAirInterface Tech : openair_tech@eurecom.fr
+   OpenAirInterface Dev  : openair4g-devel@eurecom.fr
+
+   Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
+
+ *******************************************************************************/
+
+/*! \file rrh_gw.h
+ * \brief header file for remote radio head gateway (RRH_gw) module 
+ * \author Navid Nikaein,  Katerina Trilyraki, Raymond Knopp
+ * \date 2015
+ * \version 0.1
+ * \company Eurecom
+ * \maintainer:  navid.nikaein@eurecom.fr
+ * \note
+ * \warning very experimental 
+ */
+
+#ifndef RRH_GW_H_
+#define RRH_GW_H_
+
+#include "ethernet_lib.h"
+#include "vcd_signal_dumper.h"
+#include "assertions.h"
+
+#define DEFAULT_PERIOD_NS 200000
+#define RRH_UE_PORT 51000
+#define RRH_UE_DEST_IP "127.0.0.1"
+
+/*! \brief RRH supports two types of modules: eNB and UE
+	 each module is associated a device of type ETH_IF 
+	 and optionally with another device (USRP/BLADERF/EXMIMO) */
+typedef struct {
+  //! module id
+  uint8_t id;
+  //! loopback flag
+  uint8_t loopback;
+  //! measurement flag
+  uint8_t measurements;
+  //! module's ethernet device
+  openair0_device eth_dev;
+  //! pointer to RF module's device (pointer->since its optional)
+  openair0_device *devs;
+  
+}rrh_module_t;
+
+
+/******************************************************************************
+ **                               FUNCTION PROTOTYPES                        **
+ ******************************************************************************/
+void signal_handler(int sig);
+void timer_signal_handler(int);
+void *timer_proc(void *);
+void create_timer_thread(void);
+
+
+/******************************************************************************
+ **                               FUNCTION PROTOTYPES                        **
+ ******************************************************************************/
+void create_UE_trx_threads( rrh_module_t *dev_ue, uint8_t RT_flag, uint8_t NRT_flag);
+void create_eNB_trx_threads( rrh_module_t *dev_enb, uint8_t RT_flag, uint8_t NRT_flag);
+
+#endif

targets/RT/USER/rrh_gw_externs.h

+/*******************************************************************************
+    OpenAirInterface
+    Copyright(c) 1999 - 2014 Eurecom
+
+    OpenAirInterface is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+
+    OpenAirInterface is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenAirInterface.The full GNU General Public License is
+    included in this distribution in the file called "COPYING". If not,
+    see <http://www.gnu.org/licenses/>.
+
+   Contact Information
+   OpenAirInterface Admin: openair_admin@eurecom.fr
+   OpenAirInterface Tech : openair_tech@eurecom.fr
+   OpenAirInterface Dev  : openair4g-devel@eurecom.fr
+
+   Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
+
+ *******************************************************************************/
+/*! \file rrh_gw_extern.h
+ * \brief rrh gatewy external vars
+ * \author Navid Nikaein,  Katerina Trilyraki, Raymond Knopp
+ * \date 2015
+ * \version 0.1
+ * \company Eurecom
+ * \maintainer:  navid.nikaein@eurecom.fr
+ * \note
+ * \warning very experimental 
+ */
+
+#ifndef RRH_GW_EXTERNS_H_
+#define RRH_GW_EXTERNS_H_
+
+extern openair0_timestamp 	timestamp_UE_tx[4] ,timestamp_UE_rx[4] ,timestamp_eNB_rx[4],timestamp_eNB_tx[4];
+extern openair0_vtimestamp 	hw_counter;
+extern int32_t			UE_tx_started,UE_rx_started,eNB_rx_started ,eNB_tx_started;
+extern int32_t			nsamps_UE[4],nsamps_eNB[4];
+extern int32_t			overflow_rx_buffer_eNB[4],overflow_rx_buffer_UE[4];
+extern uint8_t			rrh_exit;
+extern int32_t			**rx_buffer_eNB, **rx_buffer_UE;
+
+extern unsigned int			rt_period;
+
+#endif 

targets/RT/USER/rt_wrapper.c

@@ -28,17 +28,51 @@
  *******************************************************************************/
 
 /*! \file rt_wrapper.h
-* \brief provides a wrapper for the timing function for real-time opeartions depending on weather RTAI is used or not
-* \author F. Kaltenberger
+* \brief provides a wrapper for the timing function, runtime calculations for real-time opeartions depending on weather RTAI or LOWLATENCY kernels are used or not
+* \author F. Kaltenberger and Navid Nikaein
 * \date 2013
 * \version 0.1
 * \company Eurecom
-* \email: florian.kaltenberger@eurecom.fr
+* \email: florian.kaltenberger@eurecom.fr, navid.nikaein@eurecom.fr
 * \note
 * \warning
 */
 
 #include "rt_wrapper.h"
+static int latency_target_fd = -1;
+static int32_t latency_target_value = 0;
+/* Latency trick - taken from cyclictest.c
+ * if the file /dev/cpu_dma_latency exists,
+ * open it and write a zero into it. This will tell
+ * the power management system not to transition to
+ * a high cstate (in fact, the system acts like idle=poll)
+ * When the fd to /dev/cpu_dma_latency is closed, the behavior
+ * goes back to the system default.
+ *
+ * Documentation/power/pm_qos_interface.txt
+ */
+void set_latency_target(void) {
+  struct stat s;
+  int ret;
+
+  if (stat("/dev/cpu_dma_latency", &s) == 0) {
+    latency_target_fd = open("/dev/cpu_dma_latency", O_RDWR);
+
+    if (latency_target_fd == -1)
+      return;
+
+    ret = write(latency_target_fd, &latency_target_value, 4);
+
+    if (ret == 0) {
+      printf("# error setting cpu_dma_latency to %d!: %s\n", latency_target_value, strerror(errno));
+      close(latency_target_fd);
+      return;
+    }
+
+    printf("# /dev/cpu_dma_latency set to %dus\n", latency_target_value);
+  }
+}
+
 
 #ifndef RTAI
 
@@ -89,6 +123,135 @@ void check_clock(void)
   }
 }
 
+uint16_t cell_processing_dl[6]={10,15,24,42,80,112};
+uint16_t platform_processing_dl=20; // upperbound for GPP, LXC, DOCKER and KVM
+uint16_t user_processing_dl_a[6]={2,4,5,7,10,12};
+uint16_t user_processing_dl_b[6]={10, 15, 25, 70, 110, 150};
+uint16_t user_processing_dl_err[6]={20, 40, 60, 90, 120, 160};
+uint16_t protocol_processing_dl[6]={150, 250, 350, 450, 650, 800}; // assumption: max MCS 27 --> gives an upper bound for the transport block size : to be measured 
+
+uint16_t cell_processing_ul[6]={10,15,24,42,80,112};
+uint16_t platform_processing_ul=30; // upperbound for GPP, LXC, DOCKER and KVM
+uint16_t user_processing_ul_a[6]={5, 9, 12, 24, 33, 42};
+uint16_t user_processing_ul_b[6]={20, 30, 40, 76, 140, 200};
+uint16_t user_processing_ul_err[6]={15, 25, 32, 60, 80, 95};
+uint16_t protocol_processing_ul[6]={100, 200, 300, 400, 550, 700}; // assumption: max MCS 16 --> gives an upper bound for the transport block size 
+
+int fill_modeled_runtime_table(uint16_t runtime_phy_rx[29][6],
+			       uint16_t runtime_phy_tx[29][6]){
+  //double cpu_freq;
+  //cpu_freq = get_cpu_freq_GHz();
+  // target_dl_mcs
+  // target_ul_mcs
+  // frame_parms[0]->N_RB_DL
+  int i,j;
+  memset(runtime_phy_rx,0,sizeof(uint16_t)*29*6);
+  memset(runtime_phy_tx,0,sizeof(uint16_t)*29*6);
+  /* only the BBU/PHY procesing time */ 
+  for (i=0;i<29;i++){
+    for (j=0;j<6;j++){
+      runtime_phy_rx[i][j] = cell_processing_ul[j] + platform_processing_ul + user_processing_ul_err[j] + user_processing_ul_a[j]*i+  user_processing_ul_b[j];
+      runtime_phy_tx[i][j] = cell_processing_dl[j] + platform_processing_dl + user_processing_dl_err[j] + user_processing_dl_a[j]*i+  user_processing_dl_b[j];
+    }
+  }
+}
+ 
+// int runtime_upper_layers[6]; // values for different RBs
+// int runtime_phy_rx[29][6]; // SISO [MCS 0-28][RBs 0-5 : 6, 15, 25, 50, 75, 100]
+// int runtime_phy_tx[29][6]; // SISO [MCS 0-28][RBs 0-5 : 6, 15, 25, 50, 75, 100]
+
+// target_dl_mcs
+  // target_ul_mcs
+  // frame_parms[0]->N_RB_DL
+  //runtime_upper_layers[6]; // values for different RBs
+  // int runtime_phy_rx[29][6]; // SISO [MCS 0-28][RBs 0-5 : 6, 15, 25, 50, 75, 100] 
+  // int runtime_phy_tx[29][6]
+
+double get_runtime_tx(int tx_subframe, uint16_t runtime_phy_tx[29][6], uint32_t mcs, int N_RB_DL,double cpuf,int nb_tx_antenna){
+   int i;	
+   double runtime;
+   //printf("cpuf =%lf  \n",cpuf);
+   switch(N_RB_DL){
+   case 6:
+     i = 0;
+     break;
+   case 15:
+     i = 1;
+     break;
+   case 25:
+     i = 2;
+     break;
+   case 50:
+     i = 3;
+     break;
+   case 75:
+     i = 4;
+     break;
+   case 100:
+     i = 5;
+     break;
+   default:
+     i = 3;
+     break;
+   }			
+   
+   runtime = ( (3.2/cpuf)*(double)runtime_phy_tx[mcs][i] + (3.2/cpuf)*(double)protocol_processing_dl[i])/1000 ;
+   printf("Setting tx %d runtime value (ms) = %lf\n",tx_subframe,runtime);
+   
+   return runtime;	
+ }
+ 
+double get_runtime_rx(int rx_subframe, uint16_t runtime_phy_rx[29][6], uint32_t mcs, int N_RB_DL,double cpuf,int nb_rx_antenna){
+   int i;	
+   double runtime;
+   
+   //printf("N_RB_DL=%d  cpuf =%lf  \n",N_RB_DL, cpuf);
+   switch(N_RB_DL){
+   case 6:
+     i = 0;
+     break;
+   case 15:
+     i = 1;
+     break;
+   case 25:
+     i = 2;
+     break;
+   case 50:
+     i = 3;
+     break;
+   case 75:
+     i = 4;
+     break;
+   case 100:
+     i = 5;
+     break;
+   default:
+     i = 3;
+     break;
+   }			
+   
+   runtime = ((3.2/cpuf)*(double)runtime_phy_rx[mcs][i] + (3.2/cpuf)*(double)protocol_processing_ul[i])/1000 ;
+   printf("Setting rx %d runtime value (ms) = %lf \n",rx_subframe, runtime);
+   
+   return runtime;	
+}
+
+#ifdef LOWLATENCY
+int sched_setattr(pid_t pid, const struct sched_attr *attr, unsigned int flags)
+{
+
+  return syscall(__NR_sched_setattr, pid, attr, flags);
+}
+
+
+int sched_getattr(pid_t pid,struct sched_attr *attr,unsigned int size, unsigned int flags)
+{
+
+  return syscall(__NR_sched_getattr, pid, attr, size, flags);
+}
+
+#endif
+
 #else
 
 int rt_sleep_ns(RTIME x)

targets/RT/USER/rt_wrapper.h

@@ -38,13 +38,20 @@
 * \warning This code will be removed when a legacy libc API becomes available.
 */
 
+
+void set_latency_target(void);
+
 #ifndef RTAI
 #include <time.h>
 #include <errno.h>
-#include <stdio.h>
+#include <stdint.h>
+#include <sys/stat.h>
+#include <fcntl.h>
 #include <pthread.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
+#include <syscall.h>
+#include <math.h>
 
 #define RTIME long long int
 
@@ -56,6 +63,11 @@ int rt_sleep_ns (RTIME x);
 
 void check_clock(void);
 
+int fill_modeled_runtime_table(uint16_t runtime_phy_rx[29][6],uint16_t runtime_phy_tx[29][6]);
+
+double get_runtime_tx(int tx_subframe, uint16_t runtime_phy_tx[29][6],uint32_t mcs, int N_RB_DL,double cpuf,int nb_tx_antenna);
+
+double get_runtime_rx(int rx_subframe, uint16_t runtime_phy_rx[29][6], uint32_t mcs, int N_RB_DL,double cpuf,int nb_rx_antenna);
 /**
  * see https://www.kernel.org/doc/Documentation/scheduler/sched-deadline.txt  or
  * http://www.blaess.fr/christophe/2014/04/05/utiliser-un-appel-systeme-inconnu-de-la-libc/