enb_app.c 22 KB
Newer Older
winckel's avatar
winckel committed
1
/*******************************************************************************
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
    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
24
  OpenAirInterface Dev  : openair4g-devel@lists.eurecom.fr
25

ghaddab's avatar
ghaddab committed
26
  Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
27

28
*******************************************************************************/
29

30 31 32
/*
                                enb_app.c
                             -------------------
33
  AUTHOR  : Laurent Winckel, Sebastien ROUX, Lionel GAUTHIER, Navid Nikaein
34
  COMPANY : EURECOM
35
  EMAIL   : Lionel.Gauthier@eurecom.fr and Navid Nikaein
36
*/
winckel's avatar
winckel committed
37 38

#include <string.h>
Lionel Gauthier's avatar
 
Lionel Gauthier committed
39
#include <stdio.h>
winckel's avatar
winckel committed
40 41

#include "enb_app.h"
42
#include "enb_config.h"
winckel's avatar
winckel committed
43 44 45 46 47 48 49 50 51 52 53 54 55 56
#include "assertions.h"

#include "log.h"
#if defined(OAI_EMU)
# include "OCG.h"
# include "OCG_extern.h"
#endif

#if defined(ENABLE_ITTI)
# include "intertask_interface.h"
# include "timer.h"
# if defined(ENABLE_USE_MME)
#   include "s1ap_eNB.h"
#   include "sctp_eNB_task.h"
57
#   include "gtpv1u_eNB_task.h"
winckel's avatar
winckel committed
58
# endif
59

60 61 62 63
#if defined(ENB_AGENT_SB_IF)
#   include "enb_agent.h"
#endif

64
extern unsigned char NB_eNB_INST;
winckel's avatar
winckel committed
65 66 67 68
#endif

#if defined(ENABLE_ITTI)

69
/*------------------------------------------------------------------------------*/
70 71 72
# if defined(ENABLE_USE_MME)
#   define ENB_REGISTER_RETRY_DELAY 10
# endif
winckel's avatar
winckel committed
73

74
/*------------------------------------------------------------------------------*/
75
static void configure_phy(module_id_t enb_id, const Enb_properties_array_t* enb_properties)
76
{
77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92
  MessageDef *msg_p;
  int CC_id;

  msg_p = itti_alloc_new_message (TASK_ENB_APP, PHY_CONFIGURATION_REQ);

  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
    PHY_CONFIGURATION_REQ (msg_p).frame_type[CC_id]              = enb_properties->properties[enb_id]->frame_type[CC_id];
    PHY_CONFIGURATION_REQ (msg_p).prefix_type[CC_id]             = enb_properties->properties[enb_id]->prefix_type[CC_id];
    PHY_CONFIGURATION_REQ (msg_p).downlink_frequency[CC_id]      = enb_properties->properties[enb_id]->downlink_frequency[CC_id];
    PHY_CONFIGURATION_REQ (msg_p).uplink_frequency_offset[CC_id] = enb_properties->properties[enb_id]->uplink_frequency_offset[CC_id];
    PHY_CONFIGURATION_REQ (msg_p).nb_antennas_tx[CC_id]          = enb_properties->properties[enb_id]->nb_antennas_tx[CC_id];
    PHY_CONFIGURATION_REQ (msg_p).nb_antennas_rx[CC_id]          = enb_properties->properties[enb_id]->nb_antennas_rx[CC_id];
    PHY_CONFIGURATION_REQ (msg_p).tx_gain[CC_id]                 = enb_properties->properties[enb_id]->tx_gain[CC_id];
    PHY_CONFIGURATION_REQ (msg_p).rx_gain[CC_id]                 = enb_properties->properties[enb_id]->rx_gain[CC_id];
  }

93
  itti_send_msg_to_task (TASK_PHY_ENB, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p);
94
}
95 96

/*------------------------------------------------------------------------------*/
97
static void configure_rrc(uint32_t enb_id, const Enb_properties_array_t *enb_properties)
98
{
99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161
  MessageDef *msg_p = NULL;
  int CC_id;

  msg_p = itti_alloc_new_message (TASK_ENB_APP, RRC_CONFIGURATION_REQ);

  RRC_CONFIGURATION_REQ (msg_p).cell_identity =   enb_properties->properties[enb_id]->eNB_id;
  RRC_CONFIGURATION_REQ (msg_p).tac =             enb_properties->properties[enb_id]->tac;
  RRC_CONFIGURATION_REQ (msg_p).mcc =             enb_properties->properties[enb_id]->mcc;
  RRC_CONFIGURATION_REQ (msg_p).mnc =             enb_properties->properties[enb_id]->mnc;
  RRC_CONFIGURATION_REQ (msg_p).mnc_digit_length = enb_properties->properties[enb_id]->mnc_digit_length;

  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
    RRC_CONFIGURATION_REQ (msg_p).frame_type[CC_id]                               = enb_properties->properties[enb_id]->frame_type[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).tdd_config[CC_id]                               = enb_properties->properties[enb_id]->tdd_config[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).tdd_config_s[CC_id]                             = enb_properties->properties[enb_id]->tdd_config_s[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).eutra_band[CC_id]                               = enb_properties->properties[enb_id]->eutra_band[CC_id];

    // RACH-Config
    RRC_CONFIGURATION_REQ (msg_p).rach_numberOfRA_Preambles[CC_id]                = enb_properties->properties[enb_id]->rach_numberOfRA_Preambles[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).rach_preamblesGroupAConfig[CC_id]               = enb_properties->properties[enb_id]->rach_preamblesGroupAConfig[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).rach_sizeOfRA_PreamblesGroupA[CC_id]            = enb_properties->properties[enb_id]->rach_sizeOfRA_PreamblesGroupA[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).rach_messageSizeGroupA[CC_id]                   = enb_properties->properties[enb_id]->rach_messageSizeGroupA[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).rach_messagePowerOffsetGroupB[CC_id]            = enb_properties->properties[enb_id]->rach_messagePowerOffsetGroupB[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).rach_powerRampingStep[CC_id]                    = enb_properties->properties[enb_id]->rach_powerRampingStep[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).rach_preambleInitialReceivedTargetPower[CC_id]  = enb_properties->properties[enb_id]->rach_preambleInitialReceivedTargetPower[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).rach_preambleTransMax[CC_id]                    = enb_properties->properties[enb_id]->rach_preambleTransMax[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).rach_raResponseWindowSize[CC_id]                = enb_properties->properties[enb_id]->rach_raResponseWindowSize[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).rach_macContentionResolutionTimer[CC_id]        = enb_properties->properties[enb_id]->rach_macContentionResolutionTimer[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).rach_maxHARQ_Msg3Tx[CC_id]                      = enb_properties->properties[enb_id]->rach_maxHARQ_Msg3Tx[CC_id];

    // BCCH-Config
    RRC_CONFIGURATION_REQ (msg_p).bcch_modificationPeriodCoeff[CC_id]             = enb_properties->properties[enb_id]->bcch_modificationPeriodCoeff[CC_id];

    // PCCH-Config
    RRC_CONFIGURATION_REQ (msg_p).pcch_defaultPagingCycle[CC_id]                  = enb_properties->properties[enb_id]->pcch_defaultPagingCycle[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pcch_nB[CC_id]                                  = enb_properties->properties[enb_id]->pcch_nB[CC_id];

    // PRACH-Config
    RRC_CONFIGURATION_REQ (msg_p).prach_root[CC_id]                               = enb_properties->properties[enb_id]->prach_root[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).prach_config_index[CC_id]                       = enb_properties->properties[enb_id]->prach_config_index[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).prach_high_speed[CC_id]                         = enb_properties->properties[enb_id]->prach_high_speed[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).prach_zero_correlation[CC_id]                   = enb_properties->properties[enb_id]->prach_zero_correlation[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).prach_freq_offset[CC_id]                        = enb_properties->properties[enb_id]->prach_freq_offset[CC_id];

    // PDSCH-Config
    RRC_CONFIGURATION_REQ (msg_p).pdsch_referenceSignalPower[CC_id]               = enb_properties->properties[enb_id]->pdsch_referenceSignalPower[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pdsch_p_b[CC_id]                                = enb_properties->properties[enb_id]->pdsch_p_b[CC_id];

    // PUSCH-Config
    RRC_CONFIGURATION_REQ (msg_p).pusch_n_SB[CC_id]                               = enb_properties->properties[enb_id]->pusch_n_SB[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pusch_hoppingMode[CC_id]                        = enb_properties->properties[enb_id]->pusch_hoppingMode[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pusch_hoppingOffset[CC_id]                      = enb_properties->properties[enb_id]->pusch_hoppingOffset[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pusch_enable64QAM[CC_id]                        = enb_properties->properties[enb_id]->pusch_enable64QAM[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pusch_groupHoppingEnabled[CC_id]                = enb_properties->properties[enb_id]->pusch_groupHoppingEnabled[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pusch_groupAssignment[CC_id]                    = enb_properties->properties[enb_id]->pusch_groupAssignment[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pusch_sequenceHoppingEnabled[CC_id]             = enb_properties->properties[enb_id]->pusch_sequenceHoppingEnabled[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pusch_nDMRS1[CC_id]                             = enb_properties->properties[enb_id]->pusch_nDMRS1[CC_id];

    // PUCCH-Config

    RRC_CONFIGURATION_REQ (msg_p).pucch_delta_shift[CC_id]                        = enb_properties->properties[enb_id]->pucch_delta_shift[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pucch_nRB_CQI[CC_id]                            = enb_properties->properties[enb_id]->pucch_nRB_CQI[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pucch_nCS_AN[CC_id]                             = enb_properties->properties[enb_id]->pucch_nCS_AN[CC_id];
162
#ifndef Rel10
163
    RRC_CONFIGURATION_REQ (msg_p).pucch_n1_AN[CC_id]                              = enb_properties->properties[enb_id]->pucch_n1_AN[CC_id];
164
#endif
165

166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195
    // SRS Config
    RRC_CONFIGURATION_REQ (msg_p).srs_enable[CC_id]                               = enb_properties->properties[enb_id]->srs_enable[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).srs_BandwidthConfig[CC_id]                      = enb_properties->properties[enb_id]->srs_BandwidthConfig[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).srs_SubframeConfig[CC_id]                       = enb_properties->properties[enb_id]->srs_SubframeConfig[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).srs_ackNackST[CC_id]                            = enb_properties->properties[enb_id]->srs_ackNackST[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).srs_MaxUpPts[CC_id]                             = enb_properties->properties[enb_id]->srs_MaxUpPts[CC_id];

    // uplinkPowerControlCommon

    RRC_CONFIGURATION_REQ (msg_p).pusch_p0_Nominal[CC_id]                         = enb_properties->properties[enb_id]->pusch_p0_Nominal[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pucch_p0_Nominal[CC_id]                         = enb_properties->properties[enb_id]->pucch_p0_Nominal[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pusch_alpha[CC_id]                              = enb_properties->properties[enb_id]->pusch_alpha[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pucch_deltaF_Format1[CC_id]                     = enb_properties->properties[enb_id]->pucch_deltaF_Format1[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pucch_deltaF_Format1b[CC_id]                    = enb_properties->properties[enb_id]->pucch_deltaF_Format1b[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pucch_deltaF_Format2[CC_id]                     = enb_properties->properties[enb_id]->pucch_deltaF_Format2[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pucch_deltaF_Format2a[CC_id]                    = enb_properties->properties[enb_id]->pucch_deltaF_Format2a[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).pucch_deltaF_Format2b[CC_id]                    = enb_properties->properties[enb_id]->pucch_deltaF_Format2b[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).msg3_delta_Preamble[CC_id]                      = enb_properties->properties[enb_id]->msg3_delta_Preamble[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).ul_CyclicPrefixLength[CC_id]                    = enb_properties->properties[enb_id]->ul_CyclicPrefixLength[CC_id];

    // UE Timers and Constants

    RRC_CONFIGURATION_REQ (msg_p).ue_TimersAndConstants_t300[CC_id]               = enb_properties->properties[enb_id]->ue_TimersAndConstants_t300[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).ue_TimersAndConstants_t301[CC_id]               = enb_properties->properties[enb_id]->ue_TimersAndConstants_t301[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).ue_TimersAndConstants_t310[CC_id]               = enb_properties->properties[enb_id]->ue_TimersAndConstants_t310[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).ue_TimersAndConstants_n310[CC_id]               = enb_properties->properties[enb_id]->ue_TimersAndConstants_n310[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).ue_TimersAndConstants_t311[CC_id]               = enb_properties->properties[enb_id]->ue_TimersAndConstants_t311[CC_id];
    RRC_CONFIGURATION_REQ (msg_p).ue_TimersAndConstants_n311[CC_id]               = enb_properties->properties[enb_id]->ue_TimersAndConstants_n311[CC_id];
  }

196
  itti_send_msg_to_task (TASK_RRC_ENB, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p);
197 198
}

199
/*------------------------------------------------------------------------------*/
200
# if defined(ENABLE_USE_MME)
201
static uint32_t eNB_app_register(uint32_t enb_id_start, uint32_t enb_id_end, const Enb_properties_array_t *enb_properties)
winckel's avatar
winckel committed
202
{
203 204 205 206 207 208
  uint32_t         enb_id;
  uint32_t         mme_id;
  MessageDef      *msg_p;
  uint32_t         register_enb_pending = 0;
  char            *str                  = NULL;
  struct in_addr   addr;
209 210

#   if defined(OAI_EMU)
winckel's avatar
winckel committed
211

winckel's avatar
winckel committed
212
#   endif
213

214
  for (enb_id = enb_id_start; (enb_id < enb_id_end) ; enb_id++) {
215
#   if defined(OAI_EMU)
216 217

    if (oai_emulation.info.cli_start_enb[enb_id] == 1)
218
#   endif
219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237
    {
      s1ap_register_enb_req_t *s1ap_register_eNB;

      /* note:  there is an implicit relationship between the data structure and the message name */
      msg_p = itti_alloc_new_message (TASK_ENB_APP, S1AP_REGISTER_ENB_REQ);

      s1ap_register_eNB = &S1AP_REGISTER_ENB_REQ(msg_p);

      /* Some default/random parameters */
      s1ap_register_eNB->eNB_id           = enb_properties->properties[enb_id]->eNB_id;
      s1ap_register_eNB->cell_type        = enb_properties->properties[enb_id]->cell_type;
      s1ap_register_eNB->eNB_name         = enb_properties->properties[enb_id]->eNB_name;
      s1ap_register_eNB->tac              = enb_properties->properties[enb_id]->tac;
      s1ap_register_eNB->mcc              = enb_properties->properties[enb_id]->mcc;
      s1ap_register_eNB->mnc              = enb_properties->properties[enb_id]->mnc;
      s1ap_register_eNB->mnc_digit_length = enb_properties->properties[enb_id]->mnc_digit_length;
      s1ap_register_eNB->default_drx      = enb_properties->properties[enb_id]->pcch_defaultPagingCycle[0];

      s1ap_register_eNB->nb_mme =         enb_properties->properties[enb_id]->nb_mme;
238 239
      AssertFatal (s1ap_register_eNB->nb_mme <= S1AP_MAX_NB_MME_IP_ADDRESS, "Too many MME for eNB %d (%d/%d)!", enb_id, s1ap_register_eNB->nb_mme,
                   S1AP_MAX_NB_MME_IP_ADDRESS);
240 241 242 243 244 245 246 247 248 249 250 251

      for (mme_id = 0; mme_id < s1ap_register_eNB->nb_mme; mme_id++) {
        s1ap_register_eNB->mme_ip_address[mme_id].ipv4 = enb_properties->properties[enb_id]->mme_ip_address[mme_id].ipv4;
        s1ap_register_eNB->mme_ip_address[mme_id].ipv6 = enb_properties->properties[enb_id]->mme_ip_address[mme_id].ipv6;
        strncpy (s1ap_register_eNB->mme_ip_address[mme_id].ipv4_address,
                 enb_properties->properties[enb_id]->mme_ip_address[mme_id].ipv4_address,
                 sizeof(s1ap_register_eNB->mme_ip_address[0].ipv4_address));
        strncpy (s1ap_register_eNB->mme_ip_address[mme_id].ipv6_address,
                 enb_properties->properties[enb_id]->mme_ip_address[mme_id].ipv6_address,
                 sizeof(s1ap_register_eNB->mme_ip_address[0].ipv6_address));
      }

252 253 254 255
      s1ap_register_eNB->sctp_in_streams       = enb_properties->properties[enb_id]->sctp_in_streams;
      s1ap_register_eNB->sctp_out_streams      = enb_properties->properties[enb_id]->sctp_out_streams;


256 257 258 259 260 261
      s1ap_register_eNB->enb_ip_address.ipv6 = 0;
      s1ap_register_eNB->enb_ip_address.ipv4 = 1;
      addr.s_addr = enb_properties->properties[enb_id]->enb_ipv4_address_for_S1_MME;
      str = inet_ntoa(addr);
      strcpy(s1ap_register_eNB->enb_ip_address.ipv4_address, str);

262
      itti_send_msg_to_task (TASK_S1AP, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p);
263 264

      register_enb_pending++;
265
    }
266
  }
winckel's avatar
winckel committed
267

268
  return register_enb_pending;
winckel's avatar
winckel committed
269 270 271 272
}
# endif
#endif

273 274 275
/*------------------------------------------------------------------------------*/
void *eNB_app_task(void *args_p)
{
276
  const Enb_properties_array_t   *enb_properties_p  = NULL;
winckel's avatar
winckel committed
277
#if defined(ENABLE_ITTI)
278 279 280
  uint32_t                        enb_nb = 1; /* Default number of eNB is 1 */
  uint32_t                        enb_id_start = 0;
  uint32_t                        enb_id_end = enb_id_start + enb_nb;
winckel's avatar
winckel committed
281
# if defined(ENABLE_USE_MME)
282 283 284
  uint32_t                        register_enb_pending;
  uint32_t                        registered_enb;
  long                            enb_register_retry_timer_id;
285
# endif
286 287 288 289 290
  uint32_t                        enb_id;
  MessageDef                     *msg_p           = NULL;
  const char                     *msg_name        = NULL;
  instance_t                      instance;
  int                             result;
291

292
  itti_mark_task_ready (TASK_ENB_APP);
293

294 295
# if defined(ENABLE_USE_MME)
#   if defined(OAI_EMU)
296 297 298
  enb_nb =        oai_emulation.info.nb_enb_local;
  enb_id_start =  oai_emulation.info.first_enb_local;
  enb_id_end =    oai_emulation.info.first_enb_local + enb_nb;
299

300 301 302
  AssertFatal (enb_id_end <= NUMBER_OF_eNB_MAX,
               "Last eNB index is greater or equal to maximum eNB index (%d/%d)!",
               enb_id_end, NUMBER_OF_eNB_MAX);
303
#   endif
winckel's avatar
winckel committed
304 305
# endif

306
  enb_properties_p = enb_config_get();
307

308 309 310
  AssertFatal (enb_nb <= enb_properties_p->number,
               "Number of eNB is greater than eNB defined in configuration file (%d/%d)!",
               enb_nb, enb_properties_p->number);
311

312 313 314 315
  for (enb_id = enb_id_start; (enb_id < enb_id_end) ; enb_id++) {
    configure_phy(enb_id, enb_properties_p);
    configure_rrc(enb_id, enb_properties_p);
  }
316

317 318 319 320 321
#if defined (ENB_AGENT_SB_IF)
  printf("\n start enb agent\n");
  enb_agent_start();
#endif 

winckel's avatar
winckel committed
322
# if defined(ENABLE_USE_MME)
323 324 325
  /* Try to register each eNB */
  registered_enb = 0;
  register_enb_pending = eNB_app_register (enb_id_start, enb_id_end, enb_properties_p);
winckel's avatar
winckel committed
326
# else
327 328 329
  /* Start L2L1 task */
  msg_p = itti_alloc_new_message(TASK_ENB_APP, INITIALIZE_MESSAGE);
  itti_send_msg_to_task(TASK_L2L1, INSTANCE_DEFAULT, msg_p);
winckel's avatar
winckel committed
330 331
# endif

332 333 334
  do {
    // Wait for a message
    itti_receive_msg (TASK_ENB_APP, &msg_p);
winckel's avatar
winckel committed
335

336 337
    msg_name = ITTI_MSG_NAME (msg_p);
    instance = ITTI_MSG_INSTANCE (msg_p);
winckel's avatar
winckel committed
338

339 340 341 342
    switch (ITTI_MSG_ID(msg_p)) {
    case TERMINATE_MESSAGE:
      itti_exit_task ();
      break;
winckel's avatar
winckel committed
343

344 345 346
    case MESSAGE_TEST:
      LOG_I(ENB_APP, "Received %s\n", ITTI_MSG_NAME(msg_p));
      break;
winckel's avatar
winckel committed
347 348

# if defined(ENABLE_USE_MME)
349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369

    case S1AP_REGISTER_ENB_CNF:
      LOG_I(ENB_APP, "[eNB %d] Received %s: associated MME %d\n", instance, msg_name,
            S1AP_REGISTER_ENB_CNF(msg_p).nb_mme);

      DevAssert(register_enb_pending > 0);
      register_enb_pending--;

      /* Check if at least eNB is registered with one MME */
      if (S1AP_REGISTER_ENB_CNF(msg_p).nb_mme > 0) {
        registered_enb++;
      }

      /* Check if all register eNB requests have been processed */
      if (register_enb_pending == 0) {
        if (registered_enb == enb_nb) {
          /* If all eNB are registered, start L2L1 task */
          MessageDef *msg_init_p;

          msg_init_p = itti_alloc_new_message (TASK_ENB_APP, INITIALIZE_MESSAGE);
          itti_send_msg_to_task (TASK_L2L1, INSTANCE_DEFAULT, msg_init_p);
370 371

#   if defined(OAI_EMU)
372 373 374 375 376 377 378 379

          /* Also inform all NAS UE tasks */
          for (instance = NB_eNB_INST + oai_emulation.info.first_ue_local;
               instance < (NB_eNB_INST + oai_emulation.info.first_ue_local + oai_emulation.info.nb_ue_local); instance ++) {
            msg_init_p = itti_alloc_new_message (TASK_ENB_APP, INITIALIZE_MESSAGE);
            itti_send_msg_to_task (TASK_NAS_UE, instance, msg_init_p);
          }

380
#   endif
381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418
        } else {
          uint32_t not_associated = enb_nb - registered_enb;

          LOG_W(ENB_APP, " %d eNB %s not associated with a MME, retrying registration in %d seconds ...\n",
                not_associated, not_associated > 1 ? "are" : "is", ENB_REGISTER_RETRY_DELAY);

          /* Restart the eNB registration process in ENB_REGISTER_RETRY_DELAY seconds */
          if (timer_setup (ENB_REGISTER_RETRY_DELAY, 0, TASK_ENB_APP, INSTANCE_DEFAULT, TIMER_ONE_SHOT,
                           NULL, &enb_register_retry_timer_id) < 0) {
            LOG_E(ENB_APP, " Can not start eNB register retry timer, use \"sleep\" instead!\n");

            sleep(ENB_REGISTER_RETRY_DELAY);
            /* Restart the registration process */
            registered_enb = 0;
            register_enb_pending = eNB_app_register (enb_id_start, enb_id_end, enb_properties_p);
          }
        }
      }

      break;

    case S1AP_DEREGISTERED_ENB_IND:
      LOG_W(ENB_APP, "[eNB %d] Received %s: associated MME %d\n", instance, msg_name,
            S1AP_DEREGISTERED_ENB_IND(msg_p).nb_mme);

      /* TODO handle recovering of registration */
      break;

    case TIMER_HAS_EXPIRED:
      LOG_I(ENB_APP, " Received %s: timer_id %d\n", msg_name, TIMER_HAS_EXPIRED(msg_p).timer_id);

      if (TIMER_HAS_EXPIRED (msg_p).timer_id == enb_register_retry_timer_id) {
        /* Restart the registration process */
        registered_enb = 0;
        register_enb_pending = eNB_app_register (enb_id_start, enb_id_end, enb_properties_p);
      }

      break;
winckel's avatar
winckel committed
419 420
# endif

421 422 423 424 425 426 427 428
    default:
      LOG_E(ENB_APP, "Received unexpected message %s\n", msg_name);
      break;
    }

    result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
    AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
  } while (1);
winckel's avatar
winckel committed
429 430 431

#endif

432
  return NULL;
winckel's avatar
winckel committed
433
}