lte-softmodem.c 77.3 KB
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/*
 * 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
 */

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

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#include "rt_wrapper.h"
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#include "../../ARCH/ETHERNET/USERSPACE/LIB/if_defs.h"
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//#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all
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#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"
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#include "LAYER2/MAC/proto.h"
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#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"
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#include "UTIL/OTG/otg_tx.h"
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#include "UTIL/OTG/otg_externs.h"
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#include "UTIL/MATH/oml.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
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#include "UTIL/OPT/opt.h"
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#include "enb_config.h"
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//#include "PHY/TOOLS/time_meas.h"
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#ifndef OPENAIR2
#include "UTIL/OTG/otg_vars.h"
#endif

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

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#include "system.h"

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

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pthread_cond_t sync_cond;
pthread_mutex_t sync_mutex;
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int sync_var=-1; //!< protected by mutex \ref sync_mutex.
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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]
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#if defined(ENABLE_ITTI)
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volatile int             start_eNB = 0;
volatile int             start_UE = 0;
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#endif
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volatile int             oai_exit = 0;
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static clock_source_t clock_source = internal;
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static int wait_for_sync = 0;
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static char              UE_flag=0;
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unsigned int                    mmapped_dma=0;
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int                             single_thread_flag=1;
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static char                     threequarter_fs=0;
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uint32_t                 downlink_frequency[MAX_NUM_CCs][4];
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int32_t                  uplink_frequency_offset[MAX_NUM_CCs][4];
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static char                    *conf_config_file_name = NULL;
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#if defined(ENABLE_ITTI)
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static char                    *itti_dump_file = NULL;
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#endif

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

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FILE *input_fd=NULL;

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#if MAX_NUM_CCs == 1
rx_gain_t                rx_gain_mode[MAX_NUM_CCs][4] = {{max_gain,max_gain,max_gain,max_gain}};
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double tx_gain[MAX_NUM_CCs][4] = {{20,0,0,0}};
double rx_gain[MAX_NUM_CCs][4] = {{110,0,0,0}};
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#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}};
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#endif
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double rx_gain_off = 0.0;
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double sample_rate=30.72e6;
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double bw = 10.0e6;
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static int                      tx_max_power[MAX_NUM_CCs]; /* =  {0,0}*/;
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char   rf_config_file[1024];

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int chain_offset=0;
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int phy_test = 0;
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uint8_t usim_test = 0;
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uint8_t dci_Format = 0;
uint8_t agregation_Level =0xFF;

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uint8_t nb_antenna_tx = 1;
uint8_t nb_antenna_rx = 1;
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char ref[128] = "internal";
char channels[128] = "0";

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int                      rx_input_level_dBm;
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static int                      online_log_messages=0;
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#ifdef XFORMS
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extern int                      otg_enabled;
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static char                     do_forms=0;
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#else
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int                             otg_enabled;
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#endif
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//int                             number_of_cards =   1;
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static LTE_DL_FRAME_PARMS      *frame_parms[MAX_NUM_CCs];
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eNB_func_t node_function[MAX_NUM_CCs];
eNB_timing_t node_timing[MAX_NUM_CCs];
int16_t   node_synch_ref[MAX_NUM_CCs];
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volatile int16_t   node_control_state;

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uint32_t target_dl_mcs = 28; //maximum allowed mcs
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uint32_t target_ul_mcs = 20;
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uint32_t timing_advance = 0;
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uint8_t exit_missed_slots=1;
uint64_t num_missed_slots=0; // counter for the number of missed slots
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int transmission_mode=1;
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int16_t           glog_level         = LOG_INFO;
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int16_t           glog_verbosity     = LOG_MED;
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int16_t           hw_log_level       = LOG_INFO;
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int16_t           hw_log_verbosity   = LOG_MED;
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int16_t           phy_log_level      = LOG_INFO;
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int16_t           phy_log_verbosity  = LOG_MED;
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int16_t           mac_log_level      = LOG_INFO;
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int16_t           mac_log_verbosity  = LOG_MED;
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int16_t           rlc_log_level      = LOG_INFO;
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int16_t           rlc_log_verbosity  = LOG_MED;
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int16_t           pdcp_log_level     = LOG_INFO;
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int16_t           pdcp_log_verbosity = LOG_MED;
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int16_t           rrc_log_level      = LOG_INFO;
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int16_t           rrc_log_verbosity  = LOG_MED;
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int16_t           opt_log_level      = LOG_INFO;
int16_t           opt_log_verbosity  = LOG_MED;

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# 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
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#if defined (ENABLE_SECURITY)
int16_t           osa_log_level      = LOG_INFO;
int16_t           osa_log_verbosity  = LOG_MED;
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#endif
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char *rrh_UE_ip = "127.0.0.1";
int rrh_UE_port = 51000;
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/* flag set by eNB conf file to specify if the radio head is local or remote (default option is local) */
uint8_t local_remote_radio = BBU_LOCAL_RADIO_HEAD;
/* struct for ethernet specific parameters given in eNB conf file */
eth_params_t *eth_params;

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openair0_config_t openair0_cfg[MAX_CARDS];

double cpuf;

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char uecap_xer[1024],uecap_xer_in=0;
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int oaisim_flag=0;
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threads_t threads= {-1,-1,-1,-1,-1,-1,-1};
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/* 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;
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/*  */

/* overrid the enb configuration params*/ 
static void reconfigure_enb_params(int enb_id);


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/*---------------------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 };

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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;
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}

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

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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;
    }
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#if 1
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    if (changed) print_difftimes();
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#endif
}

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

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

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#if !defined(ENABLE_ITTI)
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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;
    }
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}
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#endif
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#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");
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  printf("  --rf-config-file Configuration file for front-end (e.g. LMS7002M)\n");
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  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");
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  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");
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  printf("  --no-L2-connect bypass L2 and upper layers\n");
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  printf("  --ue-rxgain set UE RX gain\n");
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  printf("  --ue-rxgain-off external UE amplifier offset\n");
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  printf("  --ue-txgain set UE TX gain\n");
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  printf("  --ue-nb-ant-rx  set UE number of rx antennas\n");
  printf("  --ue-scan-carrier set UE to scan around carrier\n");
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  printf("  --dlsch-demod-shift dynamic shift for LLR compuation for TM3/4 (default 0)\n");
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  printf("  --loop-memory get softmodem (UE) to loop through memory instead of acquiring from HW\n");
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  printf("  --mmapped-dma sets flag for improved EXMIMO UE performance\n");  
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  printf("  --external-clock tells hardware to use an external clock reference\n");
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  printf("  --usim-test use XOR autentication algo in case of test usim mode\n"); 
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  printf("  --single-thread-disable. Disables single-thread mode in lte-softmodem\n"); 
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  printf("  --AgregationLevel Choose the agregation level used by tghe eNB for the OAI use 1, it will save some time of processing the pdcch\n");
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  printf("  --DCIformat choose the DCI format, be careful when using this option(for the moment only valid for SISO DCI format 1)\n");
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  printf("  -A Set timing_advance\n");
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  printf("  -C Set the downlink frequency for all component carriers\n");
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  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");
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  printf("  -G Set the global log verbosity \n");
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  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");
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  printf("  -r Set the PRB, valid values: 6, 25, 50, 100  \n");    
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  printf("  -S Skip the missed slots/subframes \n");    
  printf("  -t Set the maximum uplink MCS\n");
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  printf("  -T Set hardware to TDD mode (default: FDD). Used only with -U (otherwise set in config file).\n");
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  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");
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  printf("  -x Set the transmission mode, valid options: 1 \n");
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  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");
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#if T_TRACER
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    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");
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#endif
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    printf(RESET);
    fflush(stdout);
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}
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void exit_fun(const char* s) {
    int CC_id;
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    if (s != NULL) {
        printf("%s %s() Exiting OAI softmodem: %s\n",__FILE__, __FUNCTION__, s);
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    }
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    oai_exit = 1;

    for(CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
        if (UE_flag == 0) {
            if (PHY_vars_eNB_g[0][CC_id]->rfdevice.trx_end_func)
                PHY_vars_eNB_g[0][CC_id]->rfdevice.trx_end_func(&PHY_vars_eNB_g[0][CC_id]->rfdevice);
            if (PHY_vars_eNB_g[0][CC_id]->ifdevice.trx_end_func)
                PHY_vars_eNB_g[0][CC_id]->ifdevice.trx_end_func(&PHY_vars_eNB_g[0][CC_id]->ifdevice);
        } 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);
        }
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    }
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#if defined(ENABLE_ITTI)
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    sleep(1); //allow lte-softmodem threads to exit first
    itti_terminate_tasks (TASK_UNKNOWN);
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#endif
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}

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#ifdef XFORMS
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void reset_stats(FL_OBJECT *button, long arg) {
    int i,j,k;
    PHY_VARS_eNB *phy_vars_eNB = PHY_vars_eNB_g[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;

            for (j=0; j<phy_vars_eNB->ulsch[i]->Mlimit; j++) {
                phy_vars_eNB->UE_stats[i].ulsch_decoding_attempts[k][j]=0;
                phy_vars_eNB->UE_stats[i].ulsch_decoding_attempts_last[k][j]=0;
                phy_vars_eNB->UE_stats[i].ulsch_round_errors[k][j]=0;
                phy_vars_eNB->UE_stats[i].ulsch_round_fer[k][j]=0;
            }
        }
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        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;
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    }
}

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static void *scope_thread(void *arg) {
    char stats_buffer[16384];
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    FILE *UE_stats, *eNB_stats;
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# endif
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    int len = 0;
    struct sched_param sched_param;
    int UE_id, CC_id;
    int ue_cnt=0;
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    sched_param.sched_priority = sched_get_priority_min(SCHED_FIFO)+1;
    sched_setscheduler(0, SCHED_FIFO,&sched_param);
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    printf("Scope thread has priority %d\n",sched_param.sched_priority);
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# ifdef ENABLE_XFORMS_WRITE_STATS
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    if (UE_flag==1)
        UE_stats  = fopen("UE_stats.txt", "w");
    else
        eNB_stats = fopen("eNB_stats.txt", "w");
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#endif
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    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);
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            phy_scope_UE(form_ue[0],
                         PHY_vars_UE_g[0][0],
                         0,
                         0,7);
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        } else {
            if (PHY_vars_eNB_g[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 (PHY_vars_eNB_g[0][0], stats_buffer, 0);

            if (MAX_NUM_CCs>1)
                len += dump_eNB_stats (PHY_vars_eNB_g[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 ((PHY_vars_eNB_g[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],
                                      PHY_vars_eNB_g[0][CC_id],
                                      UE_id);
                        ue_cnt++;
                    }
                }
            }
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        }
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        //printf("doing forms\n");
        //usleep(100000); // 100 ms
        sleep(1);
    }
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    //  printf("%s",stats_buffer);
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# ifdef ENABLE_XFORMS_WRITE_STATS
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    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);
        }
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    }
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# endif
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    pthread_exit((void*)arg);
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}
#endif

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#if defined(ENABLE_ITTI)
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void *l2l1_task(void *arg) {
    MessageDef *message_p = NULL;
    int         result;
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    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:
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                LOG_W(TASK_L2L1, " *** Exiting L2L1 thread\n");
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                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);
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        result = itti_free (ITTI_MSG_ORIGIN_ID(message_p), message_p);
        AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
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    }

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    do {
        // Wait for a message
        itti_receive_msg (TASK_L2L1, &message_p);
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        switch (ITTI_MSG_ID(message_p)) {
        case TERMINATE_MESSAGE:
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            LOG_W(TASK_L2L1, " *** Exiting L2L1 thread\n");
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            oai_exit=1;
            itti_exit_task ();
            break;
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        case ACTIVATE_MESSAGE:
            start_UE = 1;
            break;
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        case DEACTIVATE_MESSAGE:
            start_UE = 0;
            break;
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        case MESSAGE_TEST:
            LOG_I(EMU, "Received %s\n", ITTI_MSG_NAME(message_p));
            break;
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        default:
            LOG_E(EMU, "Received unexpected message %s\n", ITTI_MSG_NAME(message_p));
            break;
        }
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        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);
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    return NULL;
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}
#endif

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static void get_options (int argc, char **argv) {
    int c;
    //  char                          line[1000];
    //  int                           l;
    int k,i;//,j,k;
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#if defined(OAI_USRP) || defined(CPRIGW)
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    int clock_src;
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#endif
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    int CC_id;
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  const Enb_properties_array_t *enb_properties;
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    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,
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	LONG_OPTION_NBRXANT,
	LONG_OPTION_NBTXANT,
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        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,
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        LONG_OPTION_THREADONESUBFRAME,
        LONG_OPTION_THREADTWOSUBFRAME,
        LONG_OPTION_THREADTHREESUBFRAME,
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        LONG_OPTION_THREADSLOT1PROCONE,
        LONG_OPTION_THREADSLOT1PROCTWO,
        LONG_OPTION_THREADSLOT1PROCTHREE,
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        LONG_OPTION_DCIFORMAT,
        LONG_OPTION_AGREGATIONLEVEL,
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        LONG_OPTION_DEMOD_SHIFT,
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#if T_TRACER
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        LONG_OPTION_T_PORT,
        LONG_OPTION_T_NOWAIT,
        LONG_OPTION_T_DONT_FORK,
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#endif
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    };

    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},
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     	{"ue-nb-ant-rx", required_argument,  NULL, LONG_OPTION_NBRXANT},
	    {"ue-nb-ant-tx", required_argument,  NULL, LONG_OPTION_NBTXANT},
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        {"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},
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        {"threadOneSubframe",  required_argument, NULL, LONG_OPTION_THREADONESUBFRAME},
        {"threadTwoSubframe",  required_argument, NULL, LONG_OPTION_THREADTWOSUBFRAME},
        {"threadThreeSubframe",  required_argument, NULL, LONG_OPTION_THREADTHREESUBFRAME},
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        {"threadSlot1ProcOne",  required_argument, NULL, LONG_OPTION_THREADSLOT1PROCONE},
        {"threadSlot1ProcTwo",  required_argument, NULL, LONG_OPTION_THREADSLOT1PROCTWO},
        {"threadSlot1ProcThree",  required_argument, NULL, LONG_OPTION_THREADSLOT1PROCTHREE},
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        {"DCIformat",  required_argument, NULL, LONG_OPTION_DCIFORMAT},
        {"AgregationLevel",  required_argument, NULL, LONG_OPTION_AGREGATIONLEVEL},
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        {"dlsch-demod-shift", required_argument,  NULL, LONG_OPTION_DEMOD_SHIFT},
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        {"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},
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#endif
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    {NULL, 0, NULL, 0}
  };

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  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) {
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    switch (c) {
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    case LONG_OPTION_RF_CONFIG_FILE:
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      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 {
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	printf("Configuration filename is too long\n");
	exit(-1);   
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      }
      break;
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    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];
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      break;
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    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;
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    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;
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    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);
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      break;
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    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;
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    case LONG_OPTION_DEBUG_UE_PRACH:
      mode = debug_prach;
      break;
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    case LONG_OPTION_NO_L2_CONNECT:
      mode = no_L2_connect;
      break;
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    case LONG_OPTION_CALIB_PRACH_TX:
      mode = calib_prach_tx;
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      printf("Setting mode to calib_prach_tx (%d)\n",mode);
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      break;

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

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    case LONG_OPTION_TXGAIN:
      for (i=0; i<4; i++)
        tx_gain[0][i] = atof(optarg);
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      break;
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    case LONG_OPTION_NBRXANT:
    	nb_antenna_rx = atof(optarg);
    	break;
    case LONG_OPTION_NBTXANT:
    	nb_antenna_tx = atof(optarg);
    	break;
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    case LONG_OPTION_SCANCARRIER:
      UE_scan_carrier=1;

      break;

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

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    case LONG_OPTION_DUMP_FRAME:
      mode = rx_dump_frame;
      break;
      
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    case LONG_OPTION_PHYTEST:
      phy_test = 1;
      break;
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    case LONG_OPTION_USIMTEST:
        usim_test = 1;
      break;
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    case LONG_OPTION_MMAPPED_DMA:
      mmapped_dma = 1;
      break;
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    case LONG_OPTION_SINGLE_THREAD_DISABLE:
      single_thread_flag = 0;
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      break;
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    case LONG_OPTION_EXTERNAL_CLOCK:
      clock_source = external;
      break;

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    case LONG_OPTION_WAIT_FOR_SYNC:
      wait_for_sync = 1;
      break;

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    case LONG_OPTION_THREADIQ:
       threads.iq=atoi(optarg);
       break;
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    case LONG_OPTION_THREADONESUBFRAME:
       threads.one=atoi(optarg);
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       break;
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    case LONG_OPTION_THREADTWOSUBFRAME:
       threads.two=atoi(optarg);
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       break;
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    case LONG_OPTION_THREADTHREESUBFRAME:
       threads.three=atoi(optarg);
    break;
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    case LONG_OPTION_THREADSLOT1PROCONE:
       threads.slot1_proc_one=atoi(optarg);
       break;
    case LONG_OPTION_THREADSLOT1PROCTWO:
       threads.slot1_proc_two=atoi(optarg);
       break;
    case LONG_OPTION_THREADSLOT1PROCTHREE:
       threads.slot1_proc_three=atoi(optarg);
       break;
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    case LONG_OPTION_DCIFORMAT:
        dci_Format = atoi(optarg);
       break;
    case LONG_OPTION_AGREGATIONLEVEL:
        agregation_Level = atoi(optarg);
        break;
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    case LONG_OPTION_DEMOD_SHIFT: {
        extern int16_t dlsch_demod_shift;
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        dlsch_demod_shift = atof(optarg);
        break;
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    }
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#if T_TRACER
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        case LONG_OPTION_T_PORT: {
            extern int T_port;
            if (optarg == NULL) abort();  /* should not happen */
            T_port = atoi(optarg);
            break;
        }
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        case LONG_OPTION_T_NOWAIT: {
            extern int T_wait;
            T_wait = 0;
            break;
        }
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        case LONG_OPTION_T_DONT_FORK: {
            extern int T_dont_fork;
            T_dont_fork = 1;
            break;
        }
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#endif

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        case 'A':
            timing_advance = atoi (optarg);
            break;
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        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]);
            }
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            UE_scan=0;
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            break;
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        case 'a':
            chain_offset = atoi(optarg);
            break;
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        case 'd':
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#ifdef XFORMS
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            do_forms=1;
            printf("Running with XFORMS!\n");
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#endif
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            break;
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        case 'E':
            threequarter_fs=1;
            break;
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        case 'K':
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#if defined(ENABLE_ITTI)
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            itti_dump_file = strdup(optarg);
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#else
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            printf("-K option is disabled when ENABLE_ITTI is not defined\n");
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#endif
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            break;

        case 'O':
            conf_config_file_name = optarg;
            break;

        case 'U':
            UE_flag = 1;
            break;

        case 'm':
            target_dl_mcs = atoi (optarg);
            break;

        case 't':
            target_ul_mcs = atoi (optarg);
            break;

        case 'W':
            opt_enabled=1;
            opt_type = OPT_WIRESHARK;
            strncpy(in_ip, "127.0.0.1", sizeof(in_ip));
            in_ip[sizeof(in_ip) - 1] = 0; // terminate string
            printf("Enabling OPT for wireshark for local interface");
            /*
            if (optarg == NULL){
            in_ip[0] =NULL;
            printf("Enabling OPT for wireshark for local interface");
            } else {
            strncpy(in_ip, optarg, sizeof(in_ip));
            in_ip[sizeof(in_ip) - 1] = 0; // terminate string
            printf("Enabling OPT for wireshark with %s \n",in_ip);
            }
                 */
            break;

        case 'P':
            opt_type = OPT_PCAP;
            opt_enabled=1;

            if (optarg == NULL) {
                strncpy(in_path, "/tmp/oai_opt.pcap", sizeof(in_path));
                in_path[sizeof(in_path) - 1] = 0; // terminate string
                printf("Enabling OPT for PCAP with the following path /tmp/oai_opt.pcap");
            } else {
                strncpy(in_path, optarg, sizeof(in_path));
                in_path[sizeof(in_path) - 1] = 0; // terminate string
                printf("Enabling OPT for PCAP  with the following file %s \n",in_path);
            }

            break;

        case 'V':
            ouput_vcd = 1;
            break;

        case  'q':
            opp_enabled = 1;
            break;

        case  'R' :
            online_log_messages =1;
            break;

        case 'r':
            UE_scan = 0;

            for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
                switch(atoi(optarg)) {
                case 6:
                    frame_parms[CC_id]->N_RB_DL=6;
                    frame_parms[CC_id]->N_RB_UL=6;
                    break;

                case 25:
                    frame_parms[CC_id]->N_RB_DL=25;
                    frame_parms[CC_id]->N_RB_UL=25;
                    break;

                case 50:
                    frame_parms[CC_id]->N_RB_DL=50;
                    frame_parms[CC_id]->N_RB_UL=50;
                    break;

                case 100:
                    frame_parms[CC_id]->N_RB_DL=100;
                    frame_parms[CC_id]->N_RB_UL=100;
                    break;

                default:
                    printf("Unknown N_RB_DL %d, switching to 25\n",atoi(optarg));
                    break;
                }
            }

            break;

        case 's':
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#if defined(OAI_USRP) || defined(CPRIGW)
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            clock_src = atoi(optarg);
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            if (clock_src == 0) {
                //  char ref[128] = "internal";
                //strncpy(uhd_ref, ref, strlen(ref)+1);
            } else if (clock_src == 1) {
                //char ref[128] = "external";
                //strncpy(uhd_ref, ref, strlen(ref)+1);
            }
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#else
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            printf("Note: -s not defined for ExpressMIMO2\n");
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#endif
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            break;

        case 'S':
            exit_missed_slots=0;
            printf("Skip exit for missed slots\n");
            break;

        case 'g':
            glog_level=atoi(optarg); // value between 1 - 9
            break;

        case 'F':
            break;

        case 'G':
            glog_verbosity=atoi(optarg);// value from 0, 0x5, 0x15, 0x35, 0x75
            break;

        case 'x':
            printf("Transmission mode should be set in config file now\n");
            exit(-1);
            /*
            transmission_mode = atoi(optarg);

            if (transmission_mode > 7) {
              printf("Transmission mode %d not supported for the moment\n",transmission_mode);
              exit(-1);
            }
            */
            break;

        case 'T':
            for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++)
                frame_parms[CC_id]->frame_type = TDD;
            break;

        case 'h':
            help ();
            exit (-1);
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        default:
            help ();
            exit (-1);
            break;
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        }
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    }
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    if (UE_flag == 0)
        AssertFatal(conf_config_file_name != NULL,"Please provide a configuration file\n");

    if ((UE_flag == 0) && (conf_config_file_name != NULL)) {
        int i,j;

        NB_eNB_INST = 1;

        /* Read eNB configuration file */
        enb_properties = enb_config_init(conf_config_file_name);

        AssertFatal (NB_eNB_INST <= enb_properties->number,
                     "Number of eNB is greater than eNB defined in configuration file %s (%d/%d)!",
                     conf_config_file_name, NB_eNB_INST, enb_properties->number);

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	NB_eNB_INST=enb_properties->number;

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        /* Update some simulation parameters */
        for (i=0; i < enb_properties->number; i++) {
            AssertFatal (MAX_NUM_CCs == enb_properties->properties[i]->nb_cc,
                         "lte-softmodem compiled with MAX_NUM_CCs=%d, but only %d CCs configured for eNB %d!",
                         MAX_NUM_CCs, enb_properties->properties[i]->nb_cc, i);
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	    if (enb_properties->properties[i]->flexran_agent_reconf == 1) {
	      node_control_state  = ENB_WAIT_RECONFIGURATION_CMD;
	    } else {
	      node_control_state  = ENB_NORMAL_OPERATION;
	    }
		
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            eth_params = (eth_params_t*)malloc(enb_properties->properties[i]->nb_rrh_gw * sizeof(eth_params_t));
            memset(eth_params, 0, enb_properties->properties[i]->nb_rrh_gw * sizeof(eth_params_t));

            for (j=0; j<enb_properties->properties[i]->nb_rrh_gw; j++) {

                if (enb_properties->properties[i]->rrh_gw_config[j].active == 1 ) {
                    local_remote_radio = BBU_REMOTE_RADIO_HEAD;
                    (eth_params+j)->local_if_name             = enb_properties->properties[i]->rrh_gw_config[j].rrh_gw_if_name;
                    (eth_params+j)->my_addr                   = enb_properties->properties[i]->rrh_gw_config[j].local_address;
                    (eth_params+j)->my_port                   = enb_properties->properties[i]->rrh_gw_config[j].local_port;
                    (eth_params+j)->remote_addr               = enb_properties->properties[i]->rrh_gw_config[j].remote_address;
                    (eth_params+j)->remote_port               = enb_properties->properties[i]->rrh_gw_config[j].remote_port;

                    if (enb_properties->properties[i]->rrh_gw_config[j].raw == 1