lte-softmodem.c

/*
 * 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 1.0  (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 lte-enb.c
 * \brief Top-level threads for eNodeB
 * \author R. Knopp, F. Kaltenberger, Navid Nikaein
 * \date 2012
 * \version 0.1
 * \company Eurecom
 * \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr, navid.nikaein@eurecom.fr
 * \note
 * \warning
 */

#include "lte-softmodem.h"

#include "T.h"

#include "rt_wrapper.h"


#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all

#include "assertions.h"
#include "msc.h"

#include "PHY/types.h"

#include "PHY/defs.h"
#include "common/ran_context.h"

#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all
//#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all

#include "../../ARCH/COMMON/common_lib.h"
#include "../../ARCH/ETHERNET/USERSPACE/LIB/if_defs.h"

//#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all

#include "PHY/vars.h"
#include "SCHED/vars.h"
#include "LAYER2/MAC/vars.h"

#include "../../SIMU/USER/init_lte.h"

#include "LAYER2/MAC/defs.h"
#include "LAYER2/MAC/vars.h"
#include "LAYER2/MAC/proto.h"
#include "RRC/LITE/vars.h"
#include "PHY_INTERFACE/vars.h"

#ifdef SMBV
#include "PHY/TOOLS/smbv.h"
unsigned short config_frames[4] = {2,9,11,13};
#endif
#include "UTIL/LOG/log_extern.h"
#include "UTIL/OTG/otg_tx.h"
#include "UTIL/OTG/otg_externs.h"
#include "UTIL/MATH/oml.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
#include "enb_config.h"
//#include "PHY/TOOLS/time_meas.h"

#ifndef OPENAIR2
#include "UTIL/OTG/otg_vars.h"
#endif

#if defined(ENABLE_ITTI)
#include "intertask_interface_init.h"
#include "create_tasks.h"
#endif

#include "system.h"

#ifdef XFORMS
#include "PHY/TOOLS/lte_phy_scope.h"
#include "stats.h"
#endif



#ifdef XFORMS
// current status is that every UE has a DL scope for a SINGLE eNB (eNB_id=0)
// at eNB 0, an UL scope for every UE
FD_lte_phy_scope_ue  *form_ue[NUMBER_OF_UE_MAX];
FD_lte_phy_scope_enb *form_enb[MAX_NUM_CCs][NUMBER_OF_UE_MAX];
FD_stats_form                  *form_stats=NULL,*form_stats_l2=NULL;
char title[255];
unsigned char                   scope_enb_num_ue = 2;
static pthread_t                forms_thread; //xforms
#endif //XFORMS

pthread_cond_t sync_cond;
pthread_mutex_t sync_mutex;
int sync_var=-1; //!< protected by mutex \ref sync_mutex.

uint16_t runtime_phy_rx[29][6]; // SISO [MCS 0-28][RBs 0-5 : 6, 15, 25, 50, 75, 100]
uint16_t runtime_phy_tx[29][6]; // SISO [MCS 0-28][RBs 0-5 : 6, 15, 25, 50, 75, 100]

#if defined(ENABLE_ITTI)
volatile int             start_eNB = 0;
volatile int             start_UE = 0;
#endif
volatile int             oai_exit = 0;

static clock_source_t clock_source = internal;
static int wait_for_sync = 0;

static char              UE_flag=0;
unsigned int                    mmapped_dma=0;
int                             single_thread_flag=1;

static char                     threequarter_fs=0;

uint32_t                 downlink_frequency[MAX_NUM_CCs][4];
int32_t                  uplink_frequency_offset[MAX_NUM_CCs][4];


static char                    *conf_config_file_name = NULL;
#if defined(ENABLE_ITTI)
static char                    *itti_dump_file = NULL;
#endif

int UE_scan = 1;
int UE_scan_carrier = 0;
runmode_t mode = normal_txrx;

FILE *input_fd=NULL;


#if MAX_NUM_CCs == 1
rx_gain_t                rx_gain_mode[MAX_NUM_CCs][4] = {{max_gain,max_gain,max_gain,max_gain}};
double tx_gain[MAX_NUM_CCs][4] = {{20,0,0,0}};
double rx_gain[MAX_NUM_CCs][4] = {{110,0,0,0}};
#else
rx_gain_t                rx_gain_mode[MAX_NUM_CCs][4] = {{max_gain,max_gain,max_gain,max_gain},{max_gain,max_gain,max_gain,max_gain}};
double tx_gain[MAX_NUM_CCs][4] = {{20,0,0,0},{20,0,0,0}};
double rx_gain[MAX_NUM_CCs][4] = {{110,0,0,0},{20,0,0,0}};
#endif

double rx_gain_off = 0.0;

double sample_rate=30.72e6;
double bw = 10.0e6;

static int                      tx_max_power[MAX_NUM_CCs]; /* =  {0,0}*/;

char   rf_config_file[1024];

int chain_offset=0;
int phy_test = 0;
uint8_t usim_test = 0;

uint8_t nb_antenna_tx = 1;
uint8_t nb_antenna_rx = 1;

char ref[128] = "internal";
char channels[128] = "0";

int                      rx_input_level_dBm;
static int                      online_log_messages=0;
#ifdef XFORMS
extern int                      otg_enabled;
static char                     do_forms=0;
#else
int                             otg_enabled;
#endif
//int                             number_of_cards =   1;


static LTE_DL_FRAME_PARMS      *frame_parms[MAX_NUM_CCs];
uint32_t target_dl_mcs = 28; //maximum allowed mcs
uint32_t target_ul_mcs = 20;
uint32_t timing_advance = 0;
uint8_t exit_missed_slots=1;
uint64_t num_missed_slots=0; // counter for the number of missed slots


extern void reset_opp_meas(void);
extern void print_opp_meas(void);

int transmission_mode=1;

int16_t           glog_level         = LOG_INFO;
int16_t           glog_verbosity     = LOG_MED;
int16_t           hw_log_level       = LOG_INFO;
int16_t           hw_log_verbosity   = LOG_MED;
int16_t           phy_log_level      = LOG_INFO;
int16_t           phy_log_verbosity  = LOG_MED;
int16_t           mac_log_level      = LOG_INFO;
int16_t           mac_log_verbosity  = LOG_MED;
int16_t           rlc_log_level      = LOG_INFO;
int16_t           rlc_log_verbosity  = LOG_MED;
int16_t           pdcp_log_level     = LOG_INFO;
int16_t           pdcp_log_verbosity = LOG_MED;
int16_t           rrc_log_level      = LOG_INFO;
int16_t           rrc_log_verbosity  = LOG_MED;
int16_t           opt_log_level      = LOG_INFO;
int16_t           opt_log_verbosity  = LOG_MED;

# if defined(ENABLE_USE_MME)
int16_t           gtpu_log_level     = LOG_DEBUG;
int16_t           gtpu_log_verbosity = LOG_MED;
int16_t           udp_log_level      = LOG_DEBUG;
int16_t           udp_log_verbosity  = LOG_MED;
#endif
#if defined (ENABLE_SECURITY)
int16_t           osa_log_level      = LOG_INFO;
int16_t           osa_log_verbosity  = LOG_MED;
#endif

/* struct for ethernet specific parameters given in eNB conf file */
eth_params_t *eth_params;

openair0_config_t openair0_cfg[MAX_CARDS];

double cpuf;

extern char uecap_xer[1024];
char uecap_xer_in=0;

int oaisim_flag=0;
threads_t threads= {-1,-1,-1};

/* see file openair2/LAYER2/MAC/main.c for why abstraction_flag is needed
 * this is very hackish - find a proper solution
 */
uint8_t abstraction_flag=0;

/*---------------------BMC: timespec helpers -----------------------------*/

struct timespec min_diff_time = { .tv_sec = 0, .tv_nsec = 0 };
struct timespec max_diff_time = { .tv_sec = 0, .tv_nsec = 0 };

struct timespec clock_difftime(struct timespec start, struct timespec end) {
  struct timespec temp;
  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;
  }
  return temp;
}

void print_difftimes(void) {
#ifdef DEBUG
  printf("difftimes min = %lu ns ; max = %lu ns\n", min_diff_time.tv_nsec, max_diff_time.tv_nsec);
#else
  LOG_I(HW,"difftimes min = %lu ns ; max = %lu ns\n", min_diff_time.tv_nsec, max_diff_time.tv_nsec);
#endif
}

void update_difftimes(struct timespec start, struct timespec end) {
  struct timespec diff_time = { .tv_sec = 0, .tv_nsec = 0 };
  int             changed = 0;
  diff_time = clock_difftime(start, end);
  if ((min_diff_time.tv_nsec == 0) || (diff_time.tv_nsec < min_diff_time.tv_nsec)) {
    min_diff_time.tv_nsec = diff_time.tv_nsec;
    changed = 1;
  }
  if ((max_diff_time.tv_nsec == 0) || (diff_time.tv_nsec > max_diff_time.tv_nsec)) {
    max_diff_time.tv_nsec = diff_time.tv_nsec;
    changed = 1;
  }
#if 1
  if (changed) print_difftimes();
#endif
}

/*------------------------------------------------------------------------*/

unsigned int build_rflocal(int txi, int txq, int rxi, int rxq) {
  return (txi + (txq<<6) + (rxi<<12) + (rxq<<18));
}
unsigned int build_rfdc(int dcoff_i_rxfe, int dcoff_q_rxfe) {
  return (dcoff_i_rxfe + (dcoff_q_rxfe<<8));
}

#if !defined(ENABLE_ITTI)
void signal_handler(int sig) {
  void *array[10];
  size_t size;

  if (sig==SIGSEGV) {
    // get void*'s for all entries on the stack
    size = backtrace(array, 10);

    // print out all the frames to stderr
    fprintf(stderr, "Error: signal %d:\n", sig);
    backtrace_symbols_fd(array, size, 2);
    exit(-1);
  } else {
    printf("trying to exit gracefully...\n");
    oai_exit = 1;
  }
}
#endif
#define KNRM  "\x1B[0m"
#define KRED  "\x1B[31m"
#define KGRN  "\x1B[32m"
#define KBLU  "\x1B[34m"
#define RESET "\033[0m"

void help (void) {
  printf (KGRN "Usage:\n");
  printf("  sudo -E lte-softmodem [options]\n");
  printf("  sudo -E ./lte-softmodem -O ../../../targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.tm1.exmimo2.openEPC.conf -S -V -m 26 -t 16 -x 1 --ulsch-max-errors 100 -W\n\n");
  printf("Options:\n");
  printf("  --rf-config-file Configuration file for front-end (e.g. LMS7002M)\n");
  printf("  --ulsch-max-errors set the max ULSCH erros\n");
  printf("  --calib-ue-rx set UE RX calibration\n");
  printf("  --calib-ue-rx-med \n");
  printf("  --calib-ue-rxbyp\n");
  printf("  --debug-ue-prach run normal prach power ramping, but don't continue random-access\n");
  printf("  --calib-prach-tx run normal prach with maximum power, but don't continue random-access\n");
  printf("  --no-L2-connect bypass L2 and upper layers\n");
  printf("  --ue-rxgain set UE RX gain\n");
  printf("  --ue-rxgain-off external UE amplifier offset\n");
  printf("  --ue-txgain set UE TX gain\n");
  printf("  --ue-nb-ant-rx  set UE number of rx antennas\n");
  printf("  --ue-scan-carrier set UE to scan around carrier\n");
  printf("  --dlsch-demod-shift dynamic shift for LLR compuation for TM3/4 (default 0)\n");
  printf("  --loop-memory get softmodem (UE) to loop through memory instead of acquiring from HW\n");
  printf("  --mmapped-dma sets flag for improved EXMIMO UE performance\n");  
  printf("  --external-clock tells hardware to use an external clock reference\n");
  printf("  --usim-test use XOR autentication algo in case of test usim mode\n"); 
  printf("  --single-thread-disable. Disables single-thread mode in lte-softmodem\n"); 
  printf("  -A Set timing_advance\n");
  printf("  -C Set the downlink frequency for all component carriers\n");
  printf("  -d Enable soft scope and L1 and L2 stats (Xforms)\n");
  printf("  -F Calibrate the EXMIMO borad, available files: exmimo2_2arxg.lime exmimo2_2brxg.lime \n");
  printf("  -g Set the global log level, valide options: (9:trace, 8/7:debug, 6:info, 4:warn, 3:error)\n");
  printf("  -G Set the global log verbosity \n");
  printf("  -h provides this help message!\n");
  printf("  -K Generate ITTI analyzser logs (similar to wireshark logs but with more details)\n");
  printf("  -m Set the maximum downlink MCS\n");
  printf("  -O eNB configuration file (located in targets/PROJECTS/GENERIC-LTE-EPC/CONF\n");
  printf("  -q Enable processing timing measurement of lte softmodem on per subframe basis \n");
  printf("  -r Set the PRB, valid values: 6, 25, 50, 100  \n");    
  printf("  -S Skip the missed slots/subframes \n");    
  printf("  -t Set the maximum uplink MCS\n");
  printf("  -T Set hardware to TDD mode (default: FDD). Used only with -U (otherwise set in config file).\n");
  printf("  -U Set the lte softmodem as a UE\n");
  printf("  -W Enable L2 wireshark messages on localhost \n");
  printf("  -V Enable VCD (generated file will be located atopenair_dump_eNB.vcd, read it with target/RT/USER/eNB.gtkw\n");
  printf("  -x Set the transmission mode, valid options: 1 \n");
  printf("  -E Apply three-quarter of sampling frequency, 23.04 Msps to reduce the data rate on USB/PCIe transfers (only valid for 20 MHz)\n");
#if T_TRACER
  printf("  --T_port [port]    use given port\n");
  printf("  --T_nowait         don't wait for tracer, start immediately\n");
  printf("  --T_dont_fork      to ease debugging with gdb\n");
#endif
  printf(RESET);
  fflush(stdout);
}


void exit_fun(const char* s)
{
  int CC_id;
  int ru_id;

  if (s != NULL) {
    printf("%s %s() Exiting OAI softmodem: %s\n",__FILE__, __FUNCTION__, s);
  }

  oai_exit = 1;

  if (UE_flag==0) {
    for (ru_id=0; ru_id<RC.nb_RU;ru_id++) {
      if (RC.ru[ru_id]->rfdevice.trx_end_func)
	RC.ru[ru_id]->rfdevice.trx_end_func(&RC.ru[ru_id]->rfdevice);
      if (RC.ru[ru_id]->ifdevice.trx_end_func)
	RC.ru[ru_id]->ifdevice.trx_end_func(&RC.ru[ru_id]->ifdevice);  
    }
  }

  for(CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {

    oai_exit = 1;

    for(CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
      if (UE_flag == 0) {
      } else {
	if (PHY_vars_UE_g[0][CC_id]->rfdevice.trx_end_func)
	  PHY_vars_UE_g[0][CC_id]->rfdevice.trx_end_func(&PHY_vars_UE_g[0][CC_id]->rfdevice);
      }
    }

#if defined(ENABLE_ITTI)
    sleep(1); //allow lte-softmodem threads to exit first
    itti_terminate_tasks (TASK_UNKNOWN);
#endif

  }

}

#ifdef XFORMS


void reset_stats(FL_OBJECT *button, long arg)
{
  int i,j,k;
  PHY_VARS_eNB *phy_vars_eNB = RC.eNB[0][0];

  for (i=0; i<NUMBER_OF_UE_MAX; i++) {
    for (k=0; k<8; k++) { //harq_processes
      for (j=0; j<phy_vars_eNB->dlsch[i][0]->Mlimit; j++) {
	phy_vars_eNB->UE_stats[i].dlsch_NAK[k][j]=0;
	phy_vars_eNB->UE_stats[i].dlsch_ACK[k][j]=0;
	phy_vars_eNB->UE_stats[i].dlsch_trials[k][j]=0;
      }

      phy_vars_eNB->UE_stats[i].dlsch_l2_errors[k]=0;
      phy_vars_eNB->UE_stats[i].ulsch_errors[k]=0;
      phy_vars_eNB->UE_stats[i].ulsch_consecutive_errors=0;


      phy_vars_eNB->UE_stats[i].dlsch_sliding_cnt=0;
      phy_vars_eNB->UE_stats[i].dlsch_NAK_round0=0;
      phy_vars_eNB->UE_stats[i].dlsch_mcs_offset=0;
    }
  }
}

static void *scope_thread(void *arg) {
  char stats_buffer[16384];
# ifdef ENABLE_XFORMS_WRITE_STATS
  FILE *UE_stats, *eNB_stats;
# endif
  int len = 0;
  struct sched_param sched_param;
  int UE_id, CC_id;
  int ue_cnt=0;

  sched_param.sched_priority = sched_get_priority_min(SCHED_FIFO)+1;
  sched_setscheduler(0, SCHED_FIFO,&sched_param);

  printf("Scope thread has priority %d\n",sched_param.sched_priority);

# ifdef ENABLE_XFORMS_WRITE_STATS

  if (UE_flag==1)
    UE_stats  = fopen("UE_stats.txt", "w");
  else
    eNB_stats = fopen("eNB_stats.txt", "w");

#endif

  while (!oai_exit) {
    if (UE_flag==1) {
      len = dump_ue_stats (PHY_vars_UE_g[0][0], &PHY_vars_UE_g[0][0]->proc.proc_rxtx[0],stats_buffer, 0, mode,rx_input_level_dBm);
      //fl_set_object_label(form_stats->stats_text, stats_buffer);
      fl_clear_browser(form_stats->stats_text);
      fl_add_browser_line(form_stats->stats_text, stats_buffer);

      phy_scope_UE(form_ue[0],
		   PHY_vars_UE_g[0][0],
		   0,
		   0,7);


    } else {
      /*
	if (RC.eNB[0][0]->mac_enabled==1) {
	len = dump_eNB_l2_stats (stats_buffer, 0);
	//fl_set_object_label(form_stats_l2->stats_text, stats_buffer);
	fl_clear_browser(form_stats_l2->stats_text);
	fl_add_browser_line(form_stats_l2->stats_text, stats_buffer);
	}
	len = dump_eNB_stats (RC.eNB[0][0], stats_buffer, 0);

	if (MAX_NUM_CCs>1)
	len += dump_eNB_stats (RC.eNB[0][1], &stats_buffer[len], 0);

	//fl_set_object_label(form_stats->stats_text, stats_buffer);
	fl_clear_browser(form_stats->stats_text);
	fl_add_browser_line(form_stats->stats_text, stats_buffer);
      */
      ue_cnt=0;
      for(UE_id=0; UE_id<NUMBER_OF_UE_MAX; UE_id++) {
	for(CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
	  //	  if ((RC.eNB[0][CC_id]->dlsch[UE_id][0]->rnti>0) && (ue_cnt<scope_enb_num_ue)) {
	  if ((ue_cnt<scope_enb_num_ue)) {
	    phy_scope_eNB(form_enb[CC_id][ue_cnt],
			  RC.eNB[0][CC_id],
			  UE_id);
	    ue_cnt++;
	  }
	}
      }

    }
	
    //printf("doing forms\n");
    //usleep(100000); // 100 ms
    sleep(1);
  }

  //  printf("%s",stats_buffer);

# ifdef ENABLE_XFORMS_WRITE_STATS

  if (UE_flag==1) {
    if (UE_stats) {
      rewind (UE_stats);
      fwrite (stats_buffer, 1, len, UE_stats);
      fclose (UE_stats);
    }
  } else {
    if (eNB_stats) {
      rewind (eNB_stats);
      fwrite (stats_buffer, 1, len, eNB_stats);
      fclose (eNB_stats);
    }
  }

# endif

  pthread_exit((void*)arg);
}
#endif




#if defined(ENABLE_ITTI)
void *l2l1_task(void *arg) {
  MessageDef *message_p = NULL;
  int         result;

  itti_set_task_real_time(TASK_L2L1);
  itti_mark_task_ready(TASK_L2L1);

  if (UE_flag == 0) {
    /* Wait for the initialize message */
    printf("Wait for the ITTI initialize message\n");
    do {
      if (message_p != NULL) {
	result = itti_free (ITTI_MSG_ORIGIN_ID(message_p), message_p);
	AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
      }

      itti_receive_msg (TASK_L2L1, &message_p);

      switch (ITTI_MSG_ID(message_p)) {
      case INITIALIZE_MESSAGE:
	/* Start eNB thread */
	LOG_D(EMU, "L2L1 TASK received %s\n", ITTI_MSG_NAME(message_p));
	start_eNB = 1;
	break;

      case TERMINATE_MESSAGE:
	printf("received terminate message\n");
	oai_exit=1;
	itti_exit_task ();
	break;

      default:
	LOG_E(EMU, "Received unexpected message %s\n", ITTI_MSG_NAME(message_p));
	break;
      }
    } while (ITTI_MSG_ID(message_p) != INITIALIZE_MESSAGE);

    result = itti_free (ITTI_MSG_ORIGIN_ID(message_p), message_p);
    AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
  }

  do {
    // Wait for a message
    itti_receive_msg (TASK_L2L1, &message_p);

    switch (ITTI_MSG_ID(message_p)) {
    case TERMINATE_MESSAGE:
      oai_exit=1;
      itti_exit_task ();
      break;

    case ACTIVATE_MESSAGE:
      start_UE = 1;
      break;

    case DEACTIVATE_MESSAGE:
      start_UE = 0;
      break;

    case MESSAGE_TEST:
      LOG_I(EMU, "Received %s\n", ITTI_MSG_NAME(message_p));
      break;

    default:
      LOG_E(EMU, "Received unexpected message %s\n", ITTI_MSG_NAME(message_p));
      break;
    }

    result = itti_free (ITTI_MSG_ORIGIN_ID(message_p), message_p);
    AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
  } while(!oai_exit);

  return NULL;
}
#endif




static void get_options (int argc, char **argv) {
  int c;
  //  char                          line[1000];
  //  int                           l;
  int k,i;//,j,k;
#if defined(OAI_USRP) || defined(CPRIGW)
  int clock_src;
#endif
  int CC_id;



  enum long_option_e {
    LONG_OPTION_START = 0x100, /* Start after regular single char options */
    LONG_OPTION_RF_CONFIG_FILE,
    LONG_OPTION_ULSCH_MAX_CONSECUTIVE_ERRORS,
    LONG_OPTION_CALIB_UE_RX,
    LONG_OPTION_CALIB_UE_RX_MED,
    LONG_OPTION_CALIB_UE_RX_BYP,
    LONG_OPTION_DEBUG_UE_PRACH,
    LONG_OPTION_NO_L2_CONNECT,
    LONG_OPTION_CALIB_PRACH_TX,
    LONG_OPTION_RXGAIN,
    LONG_OPTION_RXGAINOFF,
    LONG_OPTION_TXGAIN,
    LONG_OPTION_NBRXANT,
    LONG_OPTION_NBTXANT,
    LONG_OPTION_SCANCARRIER,
    LONG_OPTION_MAXPOWER,
    LONG_OPTION_DUMP_FRAME,
    LONG_OPTION_LOOPMEMORY,
    LONG_OPTION_PHYTEST,
    LONG_OPTION_USIMTEST,
    LONG_OPTION_MMAPPED_DMA,
    LONG_OPTION_EXTERNAL_CLOCK,
    LONG_OPTION_WAIT_FOR_SYNC,
    LONG_OPTION_SINGLE_THREAD_DISABLE,
    LONG_OPTION_THREADIQ,
    LONG_OPTION_THREADODDSUBFRAME,
    LONG_OPTION_THREADEVENSUBFRAME,
    LONG_OPTION_DEMOD_SHIFT,
#if T_TRACER
    LONG_OPTION_T_PORT,
    LONG_OPTION_T_NOWAIT,
    LONG_OPTION_T_DONT_FORK,
#endif

  };

  static const struct option long_options[] = {
    {"rf-config-file",required_argument,  NULL, LONG_OPTION_RF_CONFIG_FILE},
    {"ulsch-max-errors",required_argument,  NULL, LONG_OPTION_ULSCH_MAX_CONSECUTIVE_ERRORS},
    {"calib-ue-rx",     required_argument,  NULL, LONG_OPTION_CALIB_UE_RX},
    {"calib-ue-rx-med", required_argument,  NULL, LONG_OPTION_CALIB_UE_RX_MED},
    {"calib-ue-rx-byp", required_argument,  NULL, LONG_OPTION_CALIB_UE_RX_BYP},
    {"debug-ue-prach",  no_argument,        NULL, LONG_OPTION_DEBUG_UE_PRACH},
    {"no-L2-connect",   no_argument,        NULL, LONG_OPTION_NO_L2_CONNECT},
    {"calib-prach-tx",   no_argument,        NULL, LONG_OPTION_CALIB_PRACH_TX},
    {"ue-rxgain",   required_argument,  NULL, LONG_OPTION_RXGAIN},
    {"ue-rxgain-off",   required_argument,  NULL, LONG_OPTION_RXGAINOFF},
    {"ue-txgain",   required_argument,  NULL, LONG_OPTION_TXGAIN},
    {"ue-nb-ant-rx", required_argument,  NULL, LONG_OPTION_NBRXANT},
    {"ue-nb-ant-tx", required_argument,  NULL, LONG_OPTION_NBTXANT},
    {"ue-scan-carrier",   no_argument,  NULL, LONG_OPTION_SCANCARRIER},
    {"ue-max-power",   required_argument,  NULL, LONG_OPTION_MAXPOWER},
    {"ue-dump-frame", no_argument, NULL, LONG_OPTION_DUMP_FRAME},
    {"loop-memory", required_argument, NULL, LONG_OPTION_LOOPMEMORY},
    {"phy-test", no_argument, NULL, LONG_OPTION_PHYTEST},
    {"usim-test", no_argument, NULL, LONG_OPTION_USIMTEST},
    {"mmapped-dma", no_argument, NULL, LONG_OPTION_MMAPPED_DMA},
    {"external-clock", no_argument, NULL, LONG_OPTION_EXTERNAL_CLOCK},
    {"wait-for-sync", no_argument, NULL, LONG_OPTION_WAIT_FOR_SYNC},
    {"single-thread-disable", no_argument, NULL, LONG_OPTION_SINGLE_THREAD_DISABLE},
    {"threadIQ",  required_argument, NULL, LONG_OPTION_THREADIQ},
    {"threadOddSubframe",  required_argument, NULL, LONG_OPTION_THREADODDSUBFRAME},
    {"threadEvenSubframe",  required_argument, NULL, LONG_OPTION_THREADEVENSUBFRAME},
    {"dlsch-demod-shift", required_argument,  NULL, LONG_OPTION_DEMOD_SHIFT},
#if T_TRACER
    {"T_port",                 required_argument, 0, LONG_OPTION_T_PORT},
    {"T_nowait",               no_argument,       0, LONG_OPTION_T_NOWAIT},
    {"T_dont_fork",            no_argument,       0, LONG_OPTION_T_DONT_FORK},
#endif
    {NULL, 0, NULL, 0}
  };

  while ((c = getopt_long (argc, argv, "A:a:C:dEK:g:F:G:hqO:m:SUVRM:r:P:Ws:t:Tx:",long_options,NULL)) != -1) {
    switch (c) {
    case LONG_OPTION_RF_CONFIG_FILE:
      if ((strcmp("null", optarg) == 0) || (strcmp("NULL", optarg) == 0)) {
	printf("no configuration filename is provided\n");
      }
      else if (strlen(optarg)<=1024){
	strcpy(rf_config_file,optarg);
      }else {
	printf("Configuration filename is too long\n");
	exit(-1);   
      }
      break;
    case LONG_OPTION_MAXPOWER:
      tx_max_power[0]=atoi(optarg);
      for (CC_id=1;CC_id<MAX_NUM_CCs;CC_id++)
	tx_max_power[CC_id]=tx_max_power[0];
      break;
    case LONG_OPTION_ULSCH_MAX_CONSECUTIVE_ERRORS:
      ULSCH_max_consecutive_errors = atoi(optarg);
      printf("Set ULSCH_max_consecutive_errors = %d\n",ULSCH_max_consecutive_errors);
      break;

    case LONG_OPTION_CALIB_UE_RX:
      mode = rx_calib_ue;
      rx_input_level_dBm = atoi(optarg);
      printf("Running with UE calibration on (LNA max), input level %d dBm\n",rx_input_level_dBm);
      break;

    case LONG_OPTION_CALIB_UE_RX_MED:
      mode = rx_calib_ue_med;
      rx_input_level_dBm = atoi(optarg);
      printf("Running with UE calibration on (LNA med), input level %d dBm\n",rx_input_level_dBm);
      break;

    case LONG_OPTION_CALIB_UE_RX_BYP:
      mode = rx_calib_ue_byp;
      rx_input_level_dBm = atoi(optarg);
      printf("Running with UE calibration on (LNA byp), input level %d dBm\n",rx_input_level_dBm);
      break;

    case LONG_OPTION_DEBUG_UE_PRACH:
      mode = debug_prach;
      break;

    case LONG_OPTION_NO_L2_CONNECT:
      mode = no_L2_connect;
      break;

    case LONG_OPTION_CALIB_PRACH_TX:
      mode = calib_prach_tx;
      printf("Setting mode to calib_prach_tx (%d)\n",mode);
      break;

    case LONG_OPTION_RXGAIN:
      for (i=0; i<4; i++)
	rx_gain[0][i] = atof(optarg);

      break;

    case LONG_OPTION_RXGAINOFF:
      rx_gain_off = atof(optarg);
      break;

    case LONG_OPTION_TXGAIN:
      for (i=0; i<4; i++)
	tx_gain[0][i] = atof(optarg);

      break;
    case LONG_OPTION_NBRXANT:
      nb_antenna_rx = atof(optarg);
      break;
    case LONG_OPTION_NBTXANT:
      nb_antenna_tx = atof(optarg);
      break;
    case LONG_OPTION_SCANCARRIER:
      UE_scan_carrier=1;

      break;

    case LONG_OPTION_LOOPMEMORY:
      mode=loop_through_memory;
      input_fd = fopen(optarg,"r");
      AssertFatal(input_fd != NULL,"Please provide an input file\n");
      break;

    case LONG_OPTION_DUMP_FRAME:
      mode = rx_dump_frame;
      break;
      
    case LONG_OPTION_PHYTEST:
      phy_test = 1;
      break;

    case LONG_OPTION_USIMTEST:
      usim_test = 1;
      break;
    case LONG_OPTION_MMAPPED_DMA:
      mmapped_dma = 1;
      break;

    case LONG_OPTION_SINGLE_THREAD_DISABLE:
      single_thread_flag = 0;
      break;

    case LONG_OPTION_EXTERNAL_CLOCK:
      clock_source = external;
      break;

    case LONG_OPTION_WAIT_FOR_SYNC:
      wait_for_sync = 1;
      break;

    case LONG_OPTION_THREADIQ:
      threads.iq=atoi(optarg);
      break;
    case LONG_OPTION_THREADODDSUBFRAME:
      threads.odd=atoi(optarg);
      break;
    case LONG_OPTION_THREADEVENSUBFRAME:
      threads.even=atoi(optarg);
      break;
    case LONG_OPTION_DEMOD_SHIFT: {
      extern int16_t dlsch_demod_shift;
      dlsch_demod_shift = atof(optarg);
      break;
    }
#if T_TRACER
    case LONG_OPTION_T_PORT: {
      extern int T_port;
      if (optarg == NULL) abort();  /* should not happen */
      T_port = atoi(optarg);
      break;
    }

    case LONG_OPTION_T_NOWAIT: {
      extern int T_wait;
      T_wait = 0;
      break;
    }

    case LONG_OPTION_T_DONT_FORK: {
      extern int T_dont_fork;
      T_dont_fork = 1;
      break;
    }
#endif

    case 'A':
      timing_advance = atoi (optarg);
      break;

    case 'C':
      for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
	downlink_frequency[CC_id][0] = atof(optarg); // Use float to avoid issue with frequency over 2^31.
	downlink_frequency[CC_id][1] = downlink_frequency[CC_id][0];
	downlink_frequency[CC_id][2] = downlink_frequency[CC_id][0];
	downlink_frequency[CC_id][3] = downlink_frequency[CC_id][0];
	printf("Downlink for CC_id %d frequency set to %u\n", CC_id, downlink_frequency[CC_id][0]);
      }

      UE_scan=0;

      break;

    case 'a':
      chain_offset = atoi(optarg);
      break;

    case 'd':
#ifdef XFORMS
      do_forms=1;
      printf("Running with XFORMS!\n");