play_scenario_s1ap.c 56.8 KB
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/*******************************************************************************
    OpenAirInterface
    Copyright(c) 1999 - 2014 Eurecom

    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.


    OpenAirInterface is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with OpenAirInterface.The full GNU General Public License is
    included in this distribution in the file called "COPYING". If not,
    see <http://www.gnu.org/licenses/>.

  Contact Information
  OpenAirInterface Admin: openair_admin@eurecom.fr
  OpenAirInterface Tech : openair_tech@eurecom.fr
  OpenAirInterface Dev  : openair4g-devel@lists.eurecom.fr

  Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE

 *******************************************************************************/

/*
                                play_scenario_s1ap.c
                                -------------------
  AUTHOR  : Lionel GAUTHIER
  COMPANY : EURECOM
  EMAIL   : Lionel.Gauthier@eurecom.fr
 */
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
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#include <unistd.h>
#include <crypt.h>
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#include <sys/time.h>
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#include "tree.h"
#include "queue.h"


#include "intertask_interface.h"
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#include "timer.h"
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#include "platform_types.h"
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#include "assertions.h"
#include "conversions.h"
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#include "s1ap_common.h"
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#include "play_scenario_s1ap_eNB_defs.h"
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#include "play_scenario.h"
#include "msc.h"
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//------------------------------------------------------------------------------
s1ap_eNB_internal_data_t s1ap_eNB_internal_data;
RB_GENERATE(s1ap_mme_map, s1ap_eNB_mme_data_s, entry, et_s1ap_eNB_compare_assoc_id);
//------------------------------------------------------------------------------
extern et_scenario_t  *g_scenario;
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extern uint32_t        g_constraints;
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//------------------------------------------------------------------------------
int et_s1ap_eNB_compare_assoc_id(
  struct s1ap_eNB_mme_data_s *p1, struct s1ap_eNB_mme_data_s *p2)
{
  if (p1->assoc_id == -1) {
    if (p1->cnx_id < p2->cnx_id) {
      return -1;
    }
    if (p1->cnx_id > p2->cnx_id) {
      return 1;
    }
  } else {
    if (p1->assoc_id < p2->assoc_id) {
      return -1;
    }
    if (p1->assoc_id > p2->assoc_id) {
      return 1;
    }
  }

  /* Matching reference */
  return 0;
}
//------------------------------------------------------------------------------
uint32_t et_s1ap_generate_eNB_id(void)
{
  char    *out;
  char     hostname[50];
  int      ret;
  uint32_t eNB_id;

  /* Retrieve the host name */
  ret = gethostname(hostname, sizeof(hostname));
  DevAssert(ret == 0);

  out = crypt(hostname, "eurecom");
  DevAssert(out != NULL);

  eNB_id = ((out[0] << 24) | (out[1] << 16) | (out[2] << 8) | out[3]);

  return eNB_id;
}
//------------------------------------------------------------------------------
uint16_t et_s1ap_eNB_fetch_add_global_cnx_id(void)
{
  return ++s1ap_eNB_internal_data.global_cnx_id;
}

//------------------------------------------------------------------------------
void et_s1ap_eNB_prepare_internal_data(void)
{
  memset(&s1ap_eNB_internal_data, 0, sizeof(s1ap_eNB_internal_data));
  STAILQ_INIT(&s1ap_eNB_internal_data.s1ap_eNB_instances_head);
}

//------------------------------------------------------------------------------
void et_s1ap_eNB_insert_new_instance(s1ap_eNB_instance_t *new_instance_p)
{
  DevAssert(new_instance_p != NULL);

  STAILQ_INSERT_TAIL(&s1ap_eNB_internal_data.s1ap_eNB_instances_head,
                     new_instance_p, s1ap_eNB_entries);
}

//------------------------------------------------------------------------------
struct s1ap_eNB_mme_data_s *et_s1ap_eNB_get_MME(
  s1ap_eNB_instance_t *instance_p,
  int32_t assoc_id, uint16_t cnx_id)
{
  struct s1ap_eNB_mme_data_s  temp;
  struct s1ap_eNB_mme_data_s *found;

  memset(&temp, 0, sizeof(struct s1ap_eNB_mme_data_s));

  temp.assoc_id = assoc_id;
  temp.cnx_id   = cnx_id;

  if (instance_p == NULL) {
    STAILQ_FOREACH(instance_p, &s1ap_eNB_internal_data.s1ap_eNB_instances_head,
                   s1ap_eNB_entries) {
      found = RB_FIND(s1ap_mme_map, &instance_p->s1ap_mme_head, &temp);

      if (found != NULL) {
        return found;
      }
    }
  } else {
    return RB_FIND(s1ap_mme_map, &instance_p->s1ap_mme_head, &temp);
  }

  return NULL;
}

//------------------------------------------------------------------------------
s1ap_eNB_instance_t *et_s1ap_eNB_get_instance(instance_t instance)
{
  s1ap_eNB_instance_t *temp = NULL;

  STAILQ_FOREACH(temp, &s1ap_eNB_internal_data.s1ap_eNB_instances_head,
                 s1ap_eNB_entries) {
    if (temp->instance == instance) {
      /* Matching occurence */
      return temp;
    }
  }

  return NULL;
}
//------------------------------------------------------------------------------
void et_s1ap_eNB_itti_send_sctp_data_req(instance_t instance, int32_t assoc_id, uint8_t *buffer,
                                      uint32_t buffer_length, uint16_t stream)
{
  MessageDef      *message_p;
  sctp_data_req_t *sctp_data_req;

  message_p = itti_alloc_new_message(TASK_S1AP, SCTP_DATA_REQ);

  sctp_data_req = &message_p->ittiMsg.sctp_data_req;
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  sctp_data_req->assoc_id      = assoc_id;
  sctp_data_req->buffer        = buffer;
  sctp_data_req->buffer_length = buffer_length;
  sctp_data_req->stream        = stream;
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  itti_send_msg_to_task(TASK_SCTP, instance, message_p);
}
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//------------------------------------------------------------------------------
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int et_handle_s1ap_mismatch_mme_ue_s1ap_id(et_packet_t * const spacket, et_packet_t * const rx_packet)
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{
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  S1ap_MME_UE_S1AP_ID_t scenario_mme_ue_s1ap_id = 0;
  S1ap_MME_UE_S1AP_ID_t rx_mme_ue_s1ap_id       = 0;
  S1AP_PDU_PR           present;

  present = rx_packet->sctp_hdr.u.data_hdr.payload.pdu.present;

  switch (rx_packet->sctp_hdr.u.data_hdr.payload.message.procedureCode) {
    case  S1ap_ProcedureCode_id_HandoverPreparation:
      if (present == S1AP_PDU_PR_initiatingMessage) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverRequiredIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverRequiredIEs.mme_ue_s1ap_id;
      } else {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverCommandIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverCommandIEs.mme_ue_s1ap_id;
      }
      break;

    case  S1ap_ProcedureCode_id_HandoverResourceAllocation:
      if (present == S1AP_PDU_PR_initiatingMessage) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverRequestIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverRequestIEs.mme_ue_s1ap_id;
      } else if (present == S1AP_PDU_PR_successfulOutcome) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverRequestAcknowledgeIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverRequestAcknowledgeIEs.mme_ue_s1ap_id;
      } else if (present == S1AP_PDU_PR_unsuccessfulOutcome) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverFailureIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverFailureIEs.mme_ue_s1ap_id;
      }
      break;

    case  S1ap_ProcedureCode_id_HandoverNotification:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverNotifyIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverNotifyIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_PathSwitchRequest:
      //rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_PathSwitchRequestIEs.mme_ue_s1ap_id;
      //scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_PathSwitchRequestIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_HandoverCancel:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverCancelIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_HandoverCancelIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_E_RABSetup:
      if (present == S1AP_PDU_PR_initiatingMessage) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABSetupRequestIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABSetupRequestIEs.mme_ue_s1ap_id;
      } else  {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABSetupResponseIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABSetupResponseIEs.mme_ue_s1ap_id;
      }
      break;

    case  S1ap_ProcedureCode_id_E_RABModify:
      if (present == S1AP_PDU_PR_initiatingMessage) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABModifyRequestIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABModifyRequestIEs.mme_ue_s1ap_id;
      } else  {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABModifyResponseIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABModifyResponseIEs.mme_ue_s1ap_id;
      }
      break;

    case  S1ap_ProcedureCode_id_E_RABRelease:
      if (present == S1AP_PDU_PR_initiatingMessage) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABReleaseCommandIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABReleaseCommandIEs.mme_ue_s1ap_id;
      } else  {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABReleaseResponseIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABReleaseResponseIEs.mme_ue_s1ap_id;
      }
      break;

    case  S1ap_ProcedureCode_id_E_RABReleaseIndication:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABReleaseIndicationIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_E_RABReleaseIndicationIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_InitialContextSetup:
      if (present == S1AP_PDU_PR_initiatingMessage) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_InitialContextSetupRequestIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_InitialContextSetupRequestIEs.mme_ue_s1ap_id;
      } else  {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_InitialContextSetupResponseIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_InitialContextSetupResponseIEs.mme_ue_s1ap_id;
      }
      break;

    case  S1ap_ProcedureCode_id_Paging:
      //rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_PagingIEs.mme_ue_s1ap_id;
      //scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_PagingIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_downlinkNASTransport:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_DownlinkNASTransportIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_DownlinkNASTransportIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_initialUEMessage:
      //rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_InitialUEMessageIEs.mme_ue_s1ap_id;
      //scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_InitialUEMessageIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_uplinkNASTransport:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UplinkNASTransportIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UplinkNASTransportIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_Reset:
      //rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ResetIEs.mme_ue_s1ap_id;
      //scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ResetIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_ErrorIndication:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ErrorIndicationIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ErrorIndicationIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_NASNonDeliveryIndication:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_NASNonDeliveryIndication_IEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_NASNonDeliveryIndication_IEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_S1Setup:
      /*if (present == S1AP_PDU_PR_initiatingMessage) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_S1SetupRequestIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_S1SetupRequestIEs.mme_ue_s1ap_id;
      } else if (present == S1AP_PDU_PR_successfulOutcome) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_S1SetupResponseIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_S1SetupResponseIEs.mme_ue_s1ap_id;
      } else if (present == S1AP_PDU_PR_unsuccessfulOutcome) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_S1SetupFailureIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_S1SetupFailureIEs.mme_ue_s1ap_id;
      }*/
      break;

    case  S1ap_ProcedureCode_id_UEContextReleaseRequest:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextReleaseRequestIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextReleaseRequestIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_DownlinkS1cdma2000tunneling:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_DownlinkS1cdma2000tunnelingIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_DownlinkS1cdma2000tunnelingIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_UplinkS1cdma2000tunneling:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UplinkS1cdma2000tunnelingIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UplinkS1cdma2000tunnelingIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_UEContextModification:
      if (present == S1AP_PDU_PR_initiatingMessage) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextModificationRequestIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextModificationRequestIEs.mme_ue_s1ap_id;
      } else if (present == S1AP_PDU_PR_successfulOutcome) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextModificationResponseIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextModificationResponseIEs.mme_ue_s1ap_id;
      } else if (present == S1AP_PDU_PR_unsuccessfulOutcome) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextModificationFailureIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextModificationFailureIEs.mme_ue_s1ap_id;
      }
      break;

    case  S1ap_ProcedureCode_id_UECapabilityInfoIndication:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UECapabilityInfoIndicationIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UECapabilityInfoIndicationIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_UEContextRelease:
      if (present == S1AP_PDU_PR_initiatingMessage) {
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        switch (rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextReleaseCommandIEs.uE_S1AP_IDs.present) {
          case S1ap_UE_S1AP_IDs_PR_uE_S1AP_ID_pair:
            rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextReleaseCommandIEs.uE_S1AP_IDs.choice.uE_S1AP_ID_pair.mME_UE_S1AP_ID;
            scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextReleaseCommandIEs.uE_S1AP_IDs.choice.uE_S1AP_ID_pair.mME_UE_S1AP_ID;
            break;
          case S1ap_UE_S1AP_IDs_PR_mME_UE_S1AP_ID:
            rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextReleaseCommandIEs.uE_S1AP_IDs.choice.mME_UE_S1AP_ID;
            scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextReleaseCommandIEs.uE_S1AP_IDs.choice.mME_UE_S1AP_ID;
            break;
        }
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      } else  {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextReleaseCompleteIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UEContextReleaseCompleteIEs.mme_ue_s1ap_id;
      }
      break;

    case  S1ap_ProcedureCode_id_eNBStatusTransfer:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ENBStatusTransferIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ENBStatusTransferIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_MMEStatusTransfer:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_MMEStatusTransferIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_MMEStatusTransferIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_DeactivateTrace:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_DeactivateTraceIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_DeactivateTraceIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_TraceStart:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_TraceStartIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_TraceStartIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_TraceFailureIndication:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_TraceFailureIndicationIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_TraceFailureIndicationIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_ENBConfigurationUpdate:
      /*if (present == S1AP_PDU_PR_initiatingMessage) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ENBConfigurationUpdateIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ENBConfigurationUpdateIEs.mme_ue_s1ap_id;
      } else if (present == S1AP_PDU_PR_successfulOutcome) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ENBConfigurationUpdateAcknowledgeIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ENBConfigurationUpdateAcknowledgeIEs.mme_ue_s1ap_id;
      } else {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ENBConfigurationUpdateFailureIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ENBConfigurationUpdateFailureIEs.mme_ue_s1ap_id;
      }*/
      break;

    case  S1ap_ProcedureCode_id_MMEConfigurationUpdate:
      /*if (present == S1AP_PDU_PR_initiatingMessage) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_MMEConfigurationUpdateIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_MMEConfigurationUpdateIEs.mme_ue_s1ap_id;
      } else if (present == S1AP_PDU_PR_successfulOutcome) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_MMEConfigurationUpdateAcknowledgeIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_MMEConfigurationUpdateAcknowledgeIEs.mme_ue_s1ap_id;
      } else {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_MMEConfigurationUpdateFailureIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_MMEConfigurationUpdateFailureIEs.mme_ue_s1ap_id;
      }*/
      break;

    case  S1ap_ProcedureCode_id_LocationReportingControl:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_LocationReportingControlIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_LocationReportingControlIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_LocationReportingFailureIndication:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_LocationReportingFailureIndicationIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_LocationReportingFailureIndicationIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_LocationReport:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_LocationReportIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_LocationReportIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_OverloadStart:
      //rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_OverloadStartIEs.mme_ue_s1ap_id;
      //scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_OverloadStartIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_OverloadStop:
      //rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_OverloadStopIEs.mme_ue_s1ap_id;
      //scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_OverloadStopIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_WriteReplaceWarning:
      /*if (present == S1AP_PDU_PR_initiatingMessage) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_WriteReplaceWarningRequestIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_WriteReplaceWarningRequestIEs.mme_ue_s1ap_id;
      } else  {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_WriteReplaceWarningResponseIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_WriteReplaceWarningResponseIEs.mme_ue_s1ap_id;
      }*/
      break;

    case  S1ap_ProcedureCode_id_eNBDirectInformationTransfer:
      //rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ENBDirectInformationTransferIEs.mme_ue_s1ap_id;
      //scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_ENBDirectInformationTransferIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_MMEDirectInformationTransfer:
      //rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_MMEDirectInformationTransferIEs.mme_ue_s1ap_id;
      //scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_MMEDirectInformationTransferIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_PrivateMessage:
    case  S1ap_ProcedureCode_id_eNBConfigurationTransfer:
    case  S1ap_ProcedureCode_id_MMEConfigurationTransfer:
      AssertFatal(0, "TODO");
      break;

    case  S1ap_ProcedureCode_id_CellTrafficTrace:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_CellTrafficTraceIEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_CellTrafficTraceIEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_Kill:
      /*if (present == S1AP_PDU_PR_initiatingMessage) {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_KillRequestIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_KillRequestIEs.mme_ue_s1ap_id;
      } else  {
        rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_KillResponseIEs.mme_ue_s1ap_id;
        scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_KillResponseIEs.mme_ue_s1ap_id;
      }*/
      break;

    case  S1ap_ProcedureCode_id_downlinkUEAssociatedLPPaTransport:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_DownlinkUEAssociatedLPPaTransport_IEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_DownlinkUEAssociatedLPPaTransport_IEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_uplinkUEAssociatedLPPaTransport:
      rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UplinkUEAssociatedLPPaTransport_IEs.mme_ue_s1ap_id;
      scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UplinkUEAssociatedLPPaTransport_IEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_downlinkNonUEAssociatedLPPaTransport:
      //rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_DownlinkNonUEAssociatedLPPaTransport_IEs.mme_ue_s1ap_id;
      //scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_DownlinkNonUEAssociatedLPPaTransport_IEs.mme_ue_s1ap_id;
      break;

    case  S1ap_ProcedureCode_id_uplinkNonUEAssociatedLPPaTransport:
      //rx_mme_ue_s1ap_id       = rx_packet->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UplinkNonUEAssociatedLPPaTransport_IEs.mme_ue_s1ap_id;
      //scenario_mme_ue_s1ap_id = spacket->sctp_hdr.u.data_hdr.payload.message.msg.s1ap_UplinkNonUEAssociatedLPPaTransport_IEs.mme_ue_s1ap_id;
      break;

    default:
      AssertFatal(0, "Unknown procedure code %ld", rx_packet->sctp_hdr.u.data_hdr.payload.message.procedureCode);
  }
521
  if (scenario_mme_ue_s1ap_id != rx_mme_ue_s1ap_id) {
522
    S1AP_DEBUG("%s() Updating  mme_ue_s1ap_id %u -> %u \n", __FUNCTION__, scenario_mme_ue_s1ap_id, rx_mme_ue_s1ap_id);
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    et_packet_t * p = spacket;
    while (p) {
      et_s1ap_update_mme_ue_s1ap_id(p, scenario_mme_ue_s1ap_id, rx_mme_ue_s1ap_id);
      p = p->next;
    }
    return 0;
  }
  return 1;
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}
//------------------------------------------------------------------------------
asn_comp_rval_t * et_s1ap_is_matching(et_s1ap_t * const s1ap1, et_s1ap_t * const s1ap2, const uint32_t constraints)
{
  asn_comp_rval_t *rv = NULL;
  if (s1ap1->pdu.present != s1ap2->pdu.present)  {rv  = calloc(1, sizeof(asn_comp_rval_t)); rv->err_code = ET_ERROR_MATCH_PACKET_S1AP_PRESENT; return rv;}
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  switch (s1ap1->pdu.present) {
    case  S1AP_PDU_PR_NOTHING:
      break;
    case  S1AP_PDU_PR_initiatingMessage:
541 542 543 544
      if (s1ap1->pdu.choice.initiatingMessage.procedureCode != s1ap2->pdu.choice.initiatingMessage.procedureCode)
        {rv  = calloc(1, sizeof(asn_comp_rval_t)); rv->err_code = ET_ERROR_MATCH_PACKET_S1AP_PROCEDURE_CODE; return rv;}
      if (s1ap1->pdu.choice.initiatingMessage.criticality != s1ap2->pdu.choice.initiatingMessage.criticality)
        {rv  = calloc(1, sizeof(asn_comp_rval_t)); rv->err_code = ET_ERROR_MATCH_PACKET_S1AP_CRITICALITY; return rv;}
545 546
      break;
    case  S1AP_PDU_PR_successfulOutcome:
547 548 549 550
      if (s1ap1->pdu.choice.successfulOutcome.procedureCode != s1ap2->pdu.choice.successfulOutcome.procedureCode)
        {rv  = calloc(1, sizeof(asn_comp_rval_t)); rv->err_code = ET_ERROR_MATCH_PACKET_S1AP_PROCEDURE_CODE; return rv;}
      if (s1ap1->pdu.choice.successfulOutcome.criticality != s1ap2->pdu.choice.successfulOutcome.criticality)
        {rv  = calloc(1, sizeof(asn_comp_rval_t)); rv->err_code = ET_ERROR_MATCH_PACKET_S1AP_CRITICALITY; return rv;}
551 552
      break;
    case  S1AP_PDU_PR_unsuccessfulOutcome:
553 554 555 556
      if (s1ap1->pdu.choice.unsuccessfulOutcome.procedureCode != s1ap2->pdu.choice.unsuccessfulOutcome.procedureCode)
        {rv  = calloc(1, sizeof(asn_comp_rval_t)); rv->err_code = ET_ERROR_MATCH_PACKET_S1AP_PROCEDURE_CODE; return rv;}
      if (s1ap1->pdu.choice.unsuccessfulOutcome.criticality != s1ap2->pdu.choice.unsuccessfulOutcome.criticality)
        {rv  = calloc(1, sizeof(asn_comp_rval_t)); rv->err_code = ET_ERROR_MATCH_PACKET_S1AP_CRITICALITY; return rv;}
557 558 559 560 561 562
      break;
    default:
      AssertFatal(0, "Unknown pdu.present %d", s1ap1->pdu.present);
  }

  if (s1ap1->binary_stream_allocated_size == s1ap2->binary_stream_allocated_size) {
563
    if (memcmp((void*)s1ap1->binary_stream, (void*)s1ap2->binary_stream, s1ap1->binary_stream_allocated_size) ==  0) return NULL;
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  }
  // if no matching, may be the scenario need minor corrections (same enb_ue_s1ap_id but need to update mme_ue_s1ap_id)
  return et_s1ap_ies_is_matching(s1ap1->pdu.present, &s1ap1->message, &s1ap2->message, constraints);
}

//------------------------------------------------------------------------------
et_packet_t* et_build_packet_from_s1ap_data_ind(et_event_s1ap_data_ind_t * const s1ap_data_ind)
571 572
{
  et_packet_t     * packet    = NULL;
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  AssertFatal (NULL != s1ap_data_ind, "Bad parameter sctp_data_ind\n");
  packet = calloc(1, sizeof(*packet));
  packet->action                                        = ET_PACKET_ACTION_S1C_NULL;
  //packet->time_relative_to_first_packet.tv_sec          = 0;
  //packet->time_relative_to_first_packet.tv_usec         = 0;
  //packet->time_relative_to_last_sent_packet.tv_sec      = 0;
  //packet->time_relative_to_last_sent_packet.tv_usec     = 0;
  //packet->time_relative_to_last_received_packet.tv_sec  = 0;
  //packet->time_relative_to_last_received_packet.tv_usec = 0;
  //packet->original_frame_number                         = 0;
  //packet->packet_number                                 = 0;
  packet->enb_instance = 0; //TODO
  //packet->ip_hdr;
  // keep in mind: allocated buffer: sctp_datahdr.payload.binary_stream
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  packet->sctp_hdr.chunk_type = SCTP_CID_DATA;
  memcpy((void*)&packet->sctp_hdr.u.data_hdr, (void*)&s1ap_data_ind->sctp_datahdr, sizeof(packet->sctp_hdr));
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  //packet->next = NULL;
  packet->status = ET_PACKET_STATUS_RECEIVED;
  //packet->timer_id = 0;
  AssertFatal(0 == gettimeofday(&packet->timestamp_packet, NULL), "gettimeofday() Failed");
  return packet;
}


597
//------------------------------------------------------------------------------
598 599
// return 0 if packet was waited
int et_scenario_set_packet_received(et_packet_t * const packet)
600
{
601 602 603
  et_packet_t * p = NULL;
  int           rc = 0;

604
  packet->status = ET_PACKET_STATUS_RECEIVED;
605 606
  S1AP_DEBUG("Packet received:          num %u  | original frame number %u \n", packet->packet_number, packet->original_frame_number);
  S1AP_DEBUG("Last Packet received:     num %u  | original frame number %u \n", g_scenario->last_rx_packet->packet_number, g_scenario->last_rx_packet->original_frame_number);
607 608 609

  p = g_scenario->last_rx_packet;
  while (NULL != p) {
610 611
    if (ET_PACKET_ACTION_S1C_RECEIVE == p->action) {
      if ((ET_PACKET_STATUS_RECEIVED == p->status) || (ET_PACKET_STATUS_NOT_TAKEN_IN_ACCOUNT == p->status)) {
612
        g_scenario->last_rx_packet = p;
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        g_scenario->time_last_rx_packet.tv_sec   = p->timestamp_packet.tv_sec;
        g_scenario->time_last_rx_packet.tv_usec  = p->timestamp_packet.tv_usec;
        S1AP_DEBUG("Set Last Packet received: num %u  | original frame number %u \n", g_scenario->last_rx_packet->packet_number, g_scenario->last_rx_packet->original_frame_number);
        S1AP_DEBUG("Set time_last_rx_packet %ld.%06d\n", g_scenario->time_last_rx_packet.tv_sec, g_scenario->time_last_rx_packet.tv_usec);
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      } else {
        break;
      }
    }
    p = p->next;
  }

624
  if (0 != packet->timer_id) {
625
    rc = timer_remove(packet->timer_id);
626
    AssertFatal(rc == 0, "TODO: Debug Timer on Rx packet num %d unknown", packet->packet_number);
627
    g_scenario->timer_count--;
628
    return rc;
629
  }
630
  return 1;
631 632
}

633
//------------------------------------------------------------------------------
634
int et_s1ap_process_rx_packet(et_event_s1ap_data_ind_t * const s1ap_data_ind)
635
{
636 637 638 639 640 641
  et_packet_t      *packet       = NULL;
  et_packet_t      *rx_packet    = NULL;
  unsigned long int not_found    = 1;
  asn_comp_rval_t  *comp_results = NULL;
  asn_comp_rval_t  *comp_results2 = NULL;
  unsigned char     error_code   = 0;
642

643 644 645
  AssertFatal (NULL != s1ap_data_ind, "Bad parameter sctp_data_ind\n");
  rx_packet = et_build_packet_from_s1ap_data_ind(s1ap_data_ind);

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  if (NULL == g_scenario->last_rx_packet) {
    packet = g_scenario->list_packet;
    while (NULL != packet) {
      if (packet->action == ET_PACKET_ACTION_S1C_RECEIVE) {
650
        if ((ET_PACKET_STATUS_RECEIVED == packet->status) || (ET_PACKET_STATUS_NOT_TAKEN_IN_ACCOUNT == packet->status)) {
651
          g_scenario->last_rx_packet = packet;
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          if  (ET_PACKET_STATUS_NOT_TAKEN_IN_ACCOUNT != packet->status) {
            g_scenario->time_last_rx_packet.tv_sec  = packet->timestamp_packet.tv_sec;
            g_scenario->time_last_rx_packet.tv_usec = packet->timestamp_packet.tv_usec;
          }
          S1AP_DEBUG("Set Last Packet received: num %u  | original frame number %u \n", g_scenario->last_rx_packet->packet_number, g_scenario->last_rx_packet->original_frame_number);
          S1AP_DEBUG("Set time_last_rx_packet %ld.%06d\n", g_scenario->time_last_rx_packet.tv_sec, g_scenario->time_last_rx_packet.tv_usec);
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        } else {
          break;
        }
      }
      packet = packet->next;
    }
    packet = g_scenario->list_packet;
  } else {
666
    packet = g_scenario->last_rx_packet->next;
667
  }
668
  // not_found threshold may sure depend on number of mme, may be not sure on number of UE
669 670
  while ((NULL != packet) && (not_found < 7)) {
    S1AP_DEBUG("%s() Considering packet num %d original frame number %u\n", __FUNCTION__, packet->packet_number, packet->original_frame_number);
671
    if (packet->action == ET_PACKET_ACTION_S1C_RECEIVE) {
672 673
      comp_results = et_sctp_is_matching(&packet->sctp_hdr, &rx_packet->sctp_hdr, g_constraints);
      if (NULL == comp_results) {
674 675 676
        S1AP_DEBUG("Compare RX packet with packet: num %u  | original frame number %u \n", packet->packet_number, packet->original_frame_number);
        packet->timestamp_packet.tv_sec = rx_packet->timestamp_packet.tv_sec;
        packet->timestamp_packet.tv_usec = rx_packet->timestamp_packet.tv_usec;
677
        return et_scenario_set_packet_received(packet);
678
      } else {
679 680 681 682 683 684 685 686 687 688
        S1AP_DEBUG("Compare RX packet with packet: num %u  | original frame number %u failed\n",
          packet->packet_number, packet->original_frame_number);
        while (comp_results) {
          S1AP_DEBUG("Result err code %s(%u) ASN1 struct name %s\n",
              et_error_match2str(comp_results->err_code), comp_results->err_code, comp_results->name);
          // (each asn1 rc <= 166 (enum e_S1ap_ProtocolIE_ID, in generated file S1ap_ProtocolIE_ID.h))
          if (comp_results->err_code == COMPARE_ERR_CODE_NO_MATCH) {
            //TODO MME_UE_S1AP_ID, etc.
            // get latest error code
            if (strcmp(comp_results->name, "S1ap-MME-UE-S1AP-ID") == 0) {
689
              if (0 == et_handle_s1ap_mismatch_mme_ue_s1ap_id((et_packet_t *const)packet, (et_packet_t *const)rx_packet)) {
690 691 692 693
                packet->timestamp_packet.tv_sec = rx_packet->timestamp_packet.tv_sec;
                packet->timestamp_packet.tv_usec = rx_packet->timestamp_packet.tv_usec;
                return et_scenario_set_packet_received(packet);
              }
694
            } else if (strcmp(comp_results->name, "S1ap-TransportLayerAddress") == 0) {
695
              S1AP_WARN("Some work needed there for %s, TODO in generic_scenario.xsl, add epc conf file in the process, anyway continuing...\n",comp_results->name);
696 697 698
              packet->timestamp_packet.tv_sec = rx_packet->timestamp_packet.tv_sec;
              packet->timestamp_packet.tv_usec = rx_packet->timestamp_packet.tv_usec;
              return et_scenario_set_packet_received(packet);
699
            } else {
700 701 702 703
              S1AP_WARN("\n\nRX PACKET:\n");
              et_display_packet_sctp(&rx_packet->sctp_hdr);
              S1AP_WARN("\n\nWAITED PACKET:\n");
              et_display_packet_sctp(&packet->sctp_hdr);
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              AssertFatal(0,"Some work needed there");
            }
          }
          comp_results2 = comp_results;
          comp_results = comp_results2->next;
          et_free_pointer(comp_results2);
710
        }
711
      }
712 713 714 715
    }
    not_found += 1;
    packet = packet->next;
  }
716
  et_display_packet_sctp(&rx_packet->sctp_hdr);
717
  AssertFatal(0, "Rx packet not found in scenario (see dump above)");
718
  return -1;
719 720
}

721
//------------------------------------------------------------------------------
722
void et_s1ap_eNB_handle_sctp_data_ind(sctp_data_ind_t * const sctp_data_ind)
723 724 725 726 727 728 729 730 731 732 733 734
{
  int            result = 0;
  et_event_t     event;

  DevAssert(sctp_data_ind != NULL);

  memset((void*)&event, 0, sizeof(event));

  event.code = ET_EVENT_RX_S1AP;
  event.u.s1ap_data_ind.sctp_datahdr.tsn                       = 0;
  event.u.s1ap_data_ind.sctp_datahdr.stream                    = sctp_data_ind->stream;
  event.u.s1ap_data_ind.sctp_datahdr.ssn                       = 0;
735 736
  event.u.s1ap_data_ind.sctp_datahdr.ppid                      = S1AP_SCTP_PPID;
  event.u.s1ap_data_ind.sctp_datahdr.assoc_id                  = sctp_data_ind->assoc_id;
737 738 739 740 741 742 743 744 745 746 747 748 749 750 751

  event.u.s1ap_data_ind.sctp_datahdr.payload.binary_stream_pos = 0;
  event.u.s1ap_data_ind.sctp_datahdr.payload.binary_stream_allocated_size = sctp_data_ind->buffer_length;
  event.u.s1ap_data_ind.sctp_datahdr.payload.binary_stream = NULL;
  if ((sctp_data_ind->buffer_length > 0) && (NULL != sctp_data_ind->buffer)) {
    event.u.s1ap_data_ind.sctp_datahdr.payload.binary_stream   = calloc(1, sctp_data_ind->buffer_length);
    memcpy(event.u.s1ap_data_ind.sctp_datahdr.payload.binary_stream,
           sctp_data_ind->buffer,
           sctp_data_ind->buffer_length);

    if (et_s1ap_decode_pdu(
           &event.u.s1ap_data_ind.sctp_datahdr.payload.pdu,
           &event.u.s1ap_data_ind.sctp_datahdr.payload.message,
           event.u.s1ap_data_ind.sctp_datahdr.payload.binary_stream,
           event.u.s1ap_data_ind.sctp_datahdr.payload.binary_stream_allocated_size) < 0) {
752
      AssertFatal (0, "ERROR Cannot decode RX S1AP message!\n");
753 754 755 756 757 758 759 760 761
    }

  }

  result = itti_free(TASK_UNKNOWN, sctp_data_ind->buffer);
  AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);

  et_scenario_fsm_notify_event(event);

762 763 764 765
  memset((void*)&event, 0, sizeof(event));
  event.code = ET_EVENT_TICK;
  et_scenario_fsm_notify_event(event);

766
}
767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829
//------------------------------------------------------------------------------
void et_s1ap_eNB_register_mme(s1ap_eNB_instance_t *instance_p,
                                  net_ip_address_t    *mme_ip_address,
                                  net_ip_address_t    *local_ip_addr,
                                  uint16_t             in_streams,
                                  uint16_t             out_streams)
{
  MessageDef                 *message_p                   = NULL;
  sctp_new_association_req_t *sctp_new_association_req_p  = NULL;
  s1ap_eNB_mme_data_t        *s1ap_mme_data_p             = NULL;

  DevAssert(instance_p != NULL);
  DevAssert(mme_ip_address != NULL);

  message_p = itti_alloc_new_message(TASK_S1AP, SCTP_NEW_ASSOCIATION_REQ);

  sctp_new_association_req_p = &message_p->ittiMsg.sctp_new_association_req;

  sctp_new_association_req_p->port = S1AP_PORT_NUMBER;
  sctp_new_association_req_p->ppid = S1AP_SCTP_PPID;

  sctp_new_association_req_p->in_streams  = in_streams;
  sctp_new_association_req_p->out_streams = out_streams;

  memcpy(&sctp_new_association_req_p->remote_address,
         mme_ip_address,
         sizeof(*mme_ip_address));

  memcpy(&sctp_new_association_req_p->local_address,
         local_ip_addr,
         sizeof(*local_ip_addr));

  /* Create new MME descriptor */
  s1ap_mme_data_p = calloc(1, sizeof(*s1ap_mme_data_p));
  DevAssert(s1ap_mme_data_p != NULL);

  s1ap_mme_data_p->cnx_id                = et_s1ap_eNB_fetch_add_global_cnx_id();
  sctp_new_association_req_p->ulp_cnx_id = s1ap_mme_data_p->cnx_id;

  s1ap_mme_data_p->assoc_id          = -1;
  s1ap_mme_data_p->s1ap_eNB_instance = instance_p;

  memcpy((void*)&s1ap_mme_data_p->mme_net_ip_address, mme_ip_address, sizeof(*mme_ip_address));


  STAILQ_INIT(&s1ap_mme_data_p->served_gummei);

  /* Insert the new descriptor in list of known MME
   * but not yet associated.
   */
  RB_INSERT(s1ap_mme_map, &instance_p->s1ap_mme_head, s1ap_mme_data_p);
  s1ap_mme_data_p->state = S1AP_ENB_STATE_WAITING;
  instance_p->s1ap_mme_nb ++;
  instance_p->s1ap_mme_pending_nb ++;

  itti_send_msg_to_task(TASK_SCTP, instance_p->instance, message_p);
}
//------------------------------------------------------------------------------
void et_s1ap_update_assoc_id_of_packets(const int32_t assoc_id,
                                        struct s1ap_eNB_instance_s * const s1ap_eNB_instance,
                                        s1ap_eNB_mme_data_t        * const mme_desc_p)
{
  et_packet_t     *packet = NULL;
830 831 832
  int              ret;
  unsigned int     old_enb_port = 0;
  unsigned int     old_mme_port = 0;
833

834 835 836
  S1AP_DEBUG("%s for SCTP association (%u)\n",__FUNCTION__,assoc_id);

  packet = g_scenario->list_packet;
837 838 839 840
  while (NULL != packet) {
    switch (packet->sctp_hdr.chunk_type) {

      case SCTP_CID_DATA :
841
        S1AP_DEBUG("%s for SCTP association (%u) SCTP_CID_DATA\n",__FUNCTION__,assoc_id);
842
        if ((ET_PACKET_STATUS_NONE == packet->status) || (ET_PACKET_STATUS_SCHEDULED_FOR_RECEIVING == packet->status)) {
843
          if (0 < old_mme_port) {
844
            if (packet->action == ET_PACKET_ACTION_S1C_SEND) {
845 846 847 848 849 850 851 852 853 854 855 856
              ret = et_compare_et_ip_to_net_ip_address(&packet->ip_hdr.dst, &mme_desc_p->mme_net_ip_address);
              if (0 == ret) {
                ret = et_compare_et_ip_to_net_ip_address(&packet->ip_hdr.src, &s1ap_eNB_instance->s1c_net_ip_address);
                if (0 == ret) {
                  // same IP src, same IP dst
                  if ((packet->sctp_hdr.dst_port == old_mme_port) && (packet->sctp_hdr.src_port == old_enb_port)) {
                    packet->sctp_hdr.u.data_hdr.assoc_id = assoc_id;
                    S1AP_DEBUG("tPacket:\tnum %u  | original frame number %u \n", packet->packet_number, packet->original_frame_number);
                    S1AP_DEBUG("\tUpdated assoc id: %u\n", assoc_id);
                  }
                }
              }
857
            } else if (packet->action == ET_PACKET_ACTION_S1C_RECEIVE) {
858 859 860 861 862 863 864 865 866 867 868 869 870 871
              ret = et_compare_et_ip_to_net_ip_address(&packet->ip_hdr.src, &mme_desc_p->mme_net_ip_address);
              if (0 == ret) {
                ret = et_compare_et_ip_to_net_ip_address(&packet->ip_hdr.dst, &s1ap_eNB_instance->s1c_net_ip_address);
                if (0 == ret) {
                  // same IP src, same IP dst
                  if ((packet->sctp_hdr.src_port == old_mme_port) && (packet->sctp_hdr.dst_port == old_enb_port)) {
                    packet->sctp_hdr.u.data_hdr.assoc_id = assoc_id;
                    S1AP_DEBUG("tPacket:\tnum %u  | original frame number %u \n", packet->packet_number, packet->original_frame_number);
                    S1AP_DEBUG("\tUpdated assoc id: %u\n", assoc_id);
                  }
                }
              }
            }
          }
872 873 874
        }
        break;

875 876
        // Strong assumption
        // in replayed scenario, the order of SCTP INIT packets is supposed to be the same as in the catched scenario
877
      case SCTP_CID_INIT:
878
        S1AP_DEBUG("%s for SCTP association (%u) SCTP_CID_INIT\n",__FUNCTION__,assoc_id);
879 880 881 882 883 884 885 886
        ret = et_compare_et_ip_to_net_ip_address(&packet->ip_hdr.dst, &mme_desc_p->mme_net_ip_address);
        if (0 == ret) {
          ret = et_compare_et_ip_to_net_ip_address(&packet->ip_hdr.src, &s1ap_eNB_instance->s1c_net_ip_address);
          if (0 == ret) {
            if (0 == old_enb_port) {
              if (ET_PACKET_STATUS_NONE == packet->status) {
                packet->status = ET_PACKET_STATUS_SENT;
                old_enb_port = packet->sctp_hdr.src_port;
887
                S1AP_DEBUG("%s for SCTP association (%u) SCTP_CID_INIT SUCCESS\n",__FUNCTION__,assoc_id);
888 889 890 891 892 893
              }
            }
          }
        }
        break;

894
      case SCTP_CID_INIT_ACK:
895 896
        S1AP_DEBUG("%s for SCTP association (%u) SCTP_CID_INIT_ACK\n",__FUNCTION__,assoc_id);
        ret = et_compare_et_ip_to_net_ip_address(&packet->ip_hdr.src, &mme_desc_p->mme_net_ip_address);
897
        if (0 == ret) {
898
          ret = et_compare_et_ip_to_net_ip_address(&packet->ip_hdr.dst, &s1ap_eNB_instance->s1c_net_ip_address);
899 900 901 902 903
          if (0 == ret) {
            if (old_enb_port == packet->sctp_hdr.dst_port) {
              if (ET_PACKET_STATUS_NONE == packet->status) {
                packet->status = ET_PACKET_STATUS_RECEIVED;
                old_mme_port = packet->sctp_hdr.dst_port;
904
                S1AP_DEBUG("%s for SCTP association (%u) SCTP_CID_INIT_ACK SUCCESS\n",__FUNCTION__,assoc_id);
905 906 907 908 909 910
              }
            }
          }
        }
        break;

911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927
      case SCTP_CID_HEARTBEAT:
      case SCTP_CID_HEARTBEAT_ACK:
      case SCTP_CID_COOKIE_ECHO:
      case SCTP_CID_COOKIE_ACK:
      case SCTP_CID_ECN_ECNE:
      case SCTP_CID_ECN_CWR:
        break;

      case SCTP_CID_ABORT:
      case SCTP_CID_SHUTDOWN:
      case SCTP_CID_SHUTDOWN_ACK:
      case SCTP_CID_ERROR:
      case SCTP_CID_SHUTDOWN_COMPLETE:
        //TODO
        break;

      default:
928
        AssertFatal(0, "Unknown chunk_type %d packet num %d", packet->sctp_hdr.chunk_type, packet->packet_number);
929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965
        ;
    }
    packet = packet->next;
  }
}
//------------------------------------------------------------------------------
void et_s1ap_handle_s1_setup_message(s1ap_eNB_mme_data_t *mme_desc_p, int sctp_shutdown)
{
  if (sctp_shutdown) {
    /* A previously connected MME has been shutdown */

    /* TODO check if it was used by some eNB and send a message to inform these eNB if there is no more associated MME */
    if (mme_desc_p->state == S1AP_ENB_STATE_CONNECTED) {
      mme_desc_p->state = S1AP_ENB_STATE_DISCONNECTED;

      if (mme_desc_p->s1ap_eNB_instance->s1ap_mme_associated_nb > 0) {
        /* Decrease associated MME number */
        mme_desc_p->s1ap_eNB_instance->s1ap_mme_associated_nb --;
      }

      /* If there are no more associated MME, inform eNB app */
      if (mme_desc_p->s1ap_eNB_instance->s1ap_mme_associated_nb == 0) {
        MessageDef                 *message_p;

        message_p = itti_alloc_new_message(TASK_S1AP, S1AP_DEREGISTERED_ENB_IND);
        S1AP_DEREGISTERED_ENB_IND(message_p).nb_mme = 0;
        itti_send_msg_to_task(TASK_ENB_APP, mme_desc_p->s1ap_eNB_instance->instance, message_p);
      }
    }
  } else {
    /* Check that at least one setup message is pending */
    DevCheck(mme_desc_p->s1ap_eNB_instance->s1ap_mme_pending_nb > 0, mme_desc_p->s1ap_eNB_instance->instance,
             mme_desc_p->s1ap_eNB_instance->s1ap_mme_pending_nb, 0);

    if (mme_desc_p->s1ap_eNB_instance->s1ap_mme_pending_nb > 0) {
      /* Decrease pending messages number */
      mme_desc_p->s1ap_eNB_instance->s1ap_mme_pending_nb --;
966
      mme_desc_p->s1ap_eNB_instance->s1ap_mme_associated_nb++;
967 968 969 970 971 972
    }

    et_s1ap_update_assoc_id_of_packets(mme_desc_p->assoc_id,
        mme_desc_p->s1ap_eNB_instance,
        mme_desc_p);

973

974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002
    /* If there are no more pending messages, inform eNB app */
    if (mme_desc_p->s1ap_eNB_instance->s1ap_mme_pending_nb == 0) {
      MessageDef                 *message_p;

      message_p = itti_alloc_new_message(TASK_S1AP, S1AP_REGISTER_ENB_CNF);
      S1AP_REGISTER_ENB_CNF(message_p).nb_mme = mme_desc_p->s1ap_eNB_instance->s1ap_mme_associated_nb;
      itti_send_msg_to_task(TASK_ENB_APP, mme_desc_p->s1ap_eNB_instance->instance, message_p);
    }
  }
}
//------------------------------------------------------------------------------
void et_s1ap_eNB_handle_register_eNB(instance_t instance, s1ap_register_enb_req_t *s1ap_register_eNB)
{
  s1ap_eNB_instance_t *new_instance;
  uint8_t index;

  DevAssert(s1ap_register_eNB != NULL);

  /* Look if the provided instance already exists */
  new_instance = et_s1ap_eNB_get_instance(instance);

  if (new_instance != NULL) {
    /* Checks if it is a retry on the same eNB */
    DevCheck(new_instance->eNB_id == s1ap_register_eNB->eNB_id, new_instance->eNB_id, s1ap_register_eNB->eNB_id, 0);
    DevCheck(new_instance->cell_type == s1ap_register_eNB->cell_type, new_instance->cell_type, s1ap_register_eNB->cell_type, 0);
    DevCheck(new_instance->tac == s1ap_register_eNB->tac, new_instance->tac, s1ap_register_eNB->tac, 0);
    DevCheck(new_instance->mcc == s1ap_register_eNB->mcc, new_instance->mcc, s1ap_register_eNB->mcc, 0);
    DevCheck(new_instance->mnc == s1ap_register_eNB->mnc, new_instance->mnc, s1ap_register_eNB->mnc, 0);
    DevCheck(new_instance->mnc_digit_length == s1ap_register_eNB->mnc_digit_length, new_instance->mnc_digit_length, s1ap_register_eNB->mnc_digit_length, 0);
1003
    DevCheck(memcmp((void*)&new_instance->s1c_net_ip_address, (void*)&s1ap_register_eNB->enb_ip_address, sizeof(new_instance->s1c_net_ip_address)) == 0, 0,0,0);
1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019
  } else {
    new_instance = calloc(1, sizeof(s1ap_eNB_instance_t));
    DevAssert(new_instance != NULL);

    RB_INIT(&new_instance->s1ap_ue_head);
    RB_INIT(&new_instance->s1ap_mme_head);

    /* Copy usefull parameters */
    new_instance->instance         = instance;
    new_instance->eNB_name         = s1ap_register_eNB->eNB_name;
    new_instance->eNB_id           = s1ap_register_eNB->eNB_id;
    new_instance->cell_type        = s1ap_register_eNB->cell_type;
    new_instance->tac              = s1ap_register_eNB->tac;
    new_instance->mcc              = s1ap_register_eNB->mcc;
    new_instance->mnc              = s1ap_register_eNB->mnc;
    new_instance->mnc_digit_length = s1ap_register_eNB->mnc_digit_length;
1020
    memcpy((void*)&new_instance->s1c_net_ip_address, (void*)&s1ap_register_eNB->enb_ip_address, sizeof(new_instance->s1c_net_ip_address));
1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069

    /* Add the new instance to the list of eNB (meaningfull in virtual mode) */
    et_s1ap_eNB_insert_new_instance(new_instance);

    S1AP_DEBUG("Registered new eNB[%d] and %s eNB id %u\n",
               instance,
               s1ap_register_eNB->cell_type == CELL_MACRO_ENB ? "macro" : "home",
               s1ap_register_eNB->eNB_id);
  }

  DevCheck(s1ap_register_eNB->nb_mme <= S1AP_MAX_NB_MME_IP_ADDRESS,
           S1AP_MAX_NB_MME_IP_ADDRESS, s1ap_register_eNB->nb_mme, 0);

  /* Trying to connect to provided list of MME ip address */
  for (index = 0; index < s1ap_register_eNB->nb_mme; index++) {
    et_s1ap_eNB_register_mme(new_instance,
                      &s1ap_register_eNB->mme_ip_address[index],
                          &s1ap_register_eNB->enb_ip_address,
                          s1ap_register_eNB->sctp_in_streams,
                          s1ap_register_eNB->sctp_out_streams);
  }
}

//------------------------------------------------------------------------------
void et_s1ap_eNB_handle_sctp_association_resp(instance_t instance, sctp_new_association_resp_t *sctp_new_association_resp)
{
  s1ap_eNB_instance_t *instance_p      = NULL;
  s1ap_eNB_mme_data_t *s1ap_mme_data_p = NULL;

  DevAssert(sctp_new_association_resp != NULL);

  instance_p = et_s1ap_eNB_get_instance(instance);
  DevAssert(instance_p != NULL);

  s1ap_mme_data_p = et_s1ap_eNB_get_MME(instance_p, -1,
                                     sctp_new_association_resp->ulp_cnx_id);
  DevAssert(s1ap_mme_data_p != NULL);

  if (sctp_new_association_resp->sctp_state != SCTP_STATE_ESTABLISHED) {
    S1AP_WARN("Received unsuccessful result for SCTP association (%u), instance %d, cnx_id %u\n",
              sctp_new_association_resp->sctp_state,
              instance,
              sctp_new_association_resp->ulp_cnx_id);

    et_s1ap_handle_s1_setup_message(s1ap_mme_data_p, sctp_new_association_resp->sctp_state == SCTP_STATE_SHUTDOWN);

    return;
  }

1070 1071 1072 1073
  S1AP_DEBUG("Received successful result for SCTP association (%u), instance %d, cnx_id %u\n",
             sctp_new_association_resp->sctp_state,
             instance,
             sctp_new_association_resp->ulp_cnx_id);
1074 1075 1076 1077 1078 1079 1080 1081
  /* Update parameters */
  s1ap_mme_data_p->assoc_id    = sctp_new_association_resp->assoc_id;
  s1ap_mme_data_p->in_streams  = sctp_new_association_resp->in_streams;
  s1ap_mme_data_p->out_streams = sctp_new_association_resp->out_streams;

  et_s1ap_handle_s1_setup_message(s1ap_mme_data_p, sctp_new_association_resp->sctp_state == SCTP_STATE_SHUTDOWN);
}

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//------------------------------------------------------------------------------
void *et_s1ap_eNB_task(void *arg)
{
  MessageDef *received_msg = NULL;
  int         result;

  S1AP_DEBUG("Starting S1AP layer\n");

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  et_s1ap_eNB_prepare_internal_data();
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  itti_mark_task_ready(TASK_S1AP);
  MSC_START_USE();

  while (1) {
    itti_receive_msg(TASK_S1AP, &received_msg);

    switch (ITTI_MSG_ID(received_msg)) {
    case TERMINATE_MESSAGE:
      itti_exit_task();
      break;

    case S1AP_REGISTER_ENB_REQ: {
      /* Register a new eNB.
       * in Virtual mode eNBs will be distinguished using the mod_id/
       * Each eNB has to send an S1AP_REGISTER_ENB message with its
       * own parameters.
       */
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      et_s1ap_eNB_handle_register_eNB(ITTI_MESSAGE_GET_INSTANCE(received_msg),
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                                   &S1AP_REGISTER_ENB_REQ(received_msg));
    }
    break;

    case SCTP_NEW_ASSOCIATION_RESP: {
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      et_s1ap_eNB_handle_sctp_association_resp(ITTI_MESSAGE_GET_INSTANCE(received_msg),
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                                            &received_msg->ittiMsg.sctp_new_association_resp);
    }
    break;

    case SCTP_DATA_IND: {
      et_s1ap_eNB_handle_sctp_data_ind(&received_msg->ittiMsg.sctp_data_ind);
    }
    break;

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    case TIMER_HAS_EXPIRED:
      LOG_I(S1AP, " Received TIMER_HAS_EXPIRED: timer_id %d\n", TIMER_HAS_EXPIRED(received_msg).timer_id);
      {
        et_packet_t * packet = (et_packet_t*)TIMER_HAS_EXPIRED (received_msg).arg;
        et_event_t    event;
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        g_scenario->timer_count--;
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        if (NULL != packet) {
          if (packet->status == ET_PACKET_STATUS_SCHEDULED_FOR_RECEIVING) {
            memset((void*)&event, 0, sizeof(event));
            event.code = ET_EVENT_RX_PACKET_TIME_OUT;
            event.u.rx_packet_time_out = packet;
            et_scenario_fsm_notify_event(event);
          } else if (packet->status == ET_PACKET_STATUS_SCHEDULED_FOR_SENDING) {
            memset((void*)&event, 0, sizeof(event));
            event.code = ET_EVENT_TX_TIMED_PACKET;
            event.u.tx_timed_packet = packet;
            et_scenario_fsm_notify_event(event);
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            et_event_t continue_event;
            continue_event.code = ET_EVENT_TICK;
            et_scenario_fsm_notify_event(continue_event);
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          } else if ((packet->status != ET_PACKET_STATUS_SENT) && ((packet->status != ET_PACKET_STATUS_RECEIVED))) {
            AssertFatal (0, "Bad status %d of packet timed out!\n", packet->status);
          }
        } else {
          LOG_W(S1AP, " Received TIMER_HAS_EXPIRED: timer_id %d, no packet attached to timer\n", TIMER_HAS_EXPIRED(received_msg).timer_id);
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        }
      }
      if (TIMER_HAS_EXPIRED (received_msg).timer_id == g_scenario->enb_register_retry_timer_id) {
        /* Restart the registration process */
        g_scenario->registered_enb = 0;
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        et_eNB_app_register (g_scenario->enb_properties);
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      }
      break;
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    default:
      S1AP_ERROR("Received unhandled message: %d:%s\n",
                 ITTI_MSG_ID(received_msg), ITTI_MSG_NAME(received_msg));
      break;
    }

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

    received_msg = NULL;
  }

  return NULL;
}