play_scenario_s1ap.c 56.6 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
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 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
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 * 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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/*
                                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"
#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;
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  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) {
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    case S1AP_ProcedureCode_id_HandoverPreparation:
      if (present == S1AP_S1AP_PDU_PR_initiatingMessage) {
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        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;

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    case S1AP_ProcedureCode_id_HandoverResourceAllocation:
      if (present == S1AP_S1AP_PDU_PR_initiatingMessage) {
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        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;
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      } else if (present == S1AP_S1AP_PDU_PR_successfulOutcome) {
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        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;
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      } else if (present == S1AP_S1AP_PDU_PR_unsuccessfulOutcome) {
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        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;

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    case S1AP_ProcedureCode_id_HandoverNotification:
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      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;

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    case S1AP_ProcedureCode_id_PathSwitchRequest:
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      //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;

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    case S1AP_ProcedureCode_id_HandoverCancel:
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      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;

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    case  S1AP_ProcedureCode_id_E_RABSetup:
      if (present == S1AP_S1AP_PDU_PR_initiatingMessage) {
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        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;
        }
366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457
      } 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;

458
    case S1AP_ProcedureCode_id_eNBDirectInformationTransfer:
459 460 461 462
      //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;

463
    case S1AP_ProcedureCode_id_MMEDirectInformationTransfer:
464 465 466 467
      //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;

468 469 470
    case S1AP_ProcedureCode_id_PrivateMessage:
    case S1AP_ProcedureCode_id_eNBConfigurationTransfer:
    case S1AP_ProcedureCode_id_MMEConfigurationTransfer:
471 472 473
      AssertFatal(0, "TODO");
      break;

474
    case S1AP_ProcedureCode_id_CellTrafficTrace:
475 476 477 478
      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;

479 480
    case S1AP_ProcedureCode_id_Kill:
      /*if (present == S1AP_S1AP_PDU_PR_initiatingMessage) {
481 482 483 484 485 486 487 488
        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;

489
    case S1AP_ProcedureCode_id_downlinkUEAssociatedLPPaTransport:
490 491 492 493
      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;

494
    case S1AP_ProcedureCode_id_uplinkUEAssociatedLPPaTransport:
495 496 497 498
      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;

499
    case S1AP_ProcedureCode_id_downlinkNonUEAssociatedLPPaTransport:
500 501 502 503
      //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;

504
    case S1AP_ProcedureCode_id_uplinkNonUEAssociatedLPPaTransport:
505 506 507 508 509 510 511
      //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);
  }
512

513
  if (scenario_mme_ue_s1ap_id != rx_mme_ue_s1ap_id) {
514
    S1AP_DEBUG("%s() Updating  mme_ue_s1ap_id %u -> %u \n", __FUNCTION__, scenario_mme_ue_s1ap_id, rx_mme_ue_s1ap_id);
515 516
    et_packet_t *p = spacket;

517 518 519 520 521 522 523
    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;
524 525 526 527 528 529
}
//------------------------------------------------------------------------------
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;}
530 531 532 533
  switch (s1ap1->pdu.present) {
    case  S1AP_PDU_PR_NOTHING:
      break;
    case  S1AP_PDU_PR_initiatingMessage:
534 535 536 537
      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;}
538 539
      break;
    case  S1AP_PDU_PR_successfulOutcome:
540 541 542 543
      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;}
544 545
      break;
    case  S1AP_PDU_PR_unsuccessfulOutcome:
546 547 548 549
      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;}
550 551 552 553 554 555
      break;
    default:
      AssertFatal(0, "Unknown pdu.present %d", s1ap1->pdu.present);
  }

  if (s1ap1->binary_stream_allocated_size == s1ap2->binary_stream_allocated_size) {
556
    if (memcmp((void*)s1ap1->binary_stream, (void*)s1ap2->binary_stream, s1ap1->binary_stream_allocated_size) ==  0) return NULL;
557 558 559 560 561 562 563
  }
  // 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)
564 565
{
  et_packet_t     * packet    = NULL;
566 567 568 569 570 571 572 573 574 575 576 577 578 579
  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
580 581
  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));
582 583 584 585 586 587 588 589
  //packet->next = NULL;
  packet->status = ET_PACKET_STATUS_RECEIVED;
  //packet->timer_id = 0;
  AssertFatal(0 == gettimeofday(&packet->timestamp_packet, NULL), "gettimeofday() Failed");
  return packet;
}


590
//------------------------------------------------------------------------------
591 592
// return 0 if packet was waited
int et_scenario_set_packet_received(et_packet_t * const packet)
593
{
594 595 596
  et_packet_t * p = NULL;
  int           rc = 0;

597
  packet->status = ET_PACKET_STATUS_RECEIVED;
598 599
  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);
600 601 602

  p = g_scenario->last_rx_packet;
  while (NULL != p) {
603 604
    if (ET_PACKET_ACTION_S1C_RECEIVE == p->action) {
      if ((ET_PACKET_STATUS_RECEIVED == p->status) || (ET_PACKET_STATUS_NOT_TAKEN_IN_ACCOUNT == p->status)) {
605
        g_scenario->last_rx_packet = p;
606 607 608 609
        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);
610 611 612 613 614 615 616
      } else {
        break;
      }
    }
    p = p->next;
  }

617
  if (0 != packet->timer_id) {
618
    rc = timer_remove(packet->timer_id);
619
    AssertFatal(rc == 0, "TODO: Debug Timer on Rx packet num %u unknown", packet->packet_number);
620
    g_scenario->timer_count--;
621
    return rc;
622
  }
623
  return 1;
624 625
}

626
//------------------------------------------------------------------------------
627
int et_s1ap_process_rx_packet(et_event_s1ap_data_ind_t * const s1ap_data_ind)
628
{
629 630 631 632 633 634
  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;
635

636 637 638
  AssertFatal (NULL != s1ap_data_ind, "Bad parameter sctp_data_ind\n");
  rx_packet = et_build_packet_from_s1ap_data_ind(s1ap_data_ind);

639 640 641 642
  if (NULL == g_scenario->last_rx_packet) {
    packet = g_scenario->list_packet;
    while (NULL != packet) {
      if (packet->action == ET_PACKET_ACTION_S1C_RECEIVE) {
643
        if ((ET_PACKET_STATUS_RECEIVED == packet->status) || (ET_PACKET_STATUS_NOT_TAKEN_IN_ACCOUNT == packet->status)) {
644
          g_scenario->last_rx_packet = packet;
645 646 647 648 649 650
          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);
651 652 653 654 655 656 657 658
        } else {
          break;
        }
      }
      packet = packet->next;
    }
    packet = g_scenario->list_packet;
  } else {
659
    packet = g_scenario->last_rx_packet->next;
660
  }
661
  // not_found threshold may sure depend on number of mme, may be not sure on number of UE
662
  while ((NULL != packet) && (not_found < 9)) {
663
    S1AP_DEBUG("%s() Considering packet num %d original frame number %u\n", __FUNCTION__, packet->packet_number, packet->original_frame_number);
664
    if (packet->action == ET_PACKET_ACTION_S1C_RECEIVE) {
665 666
      comp_results = et_sctp_is_matching(&packet->sctp_hdr, &rx_packet->sctp_hdr, g_constraints);
      if (NULL == comp_results) {
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        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;
670
        return et_scenario_set_packet_received(packet);
671
      } else {
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        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",
676 677 678
                     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))
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          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) {
683
              if (0 == et_handle_s1ap_mismatch_mme_ue_s1ap_id((et_packet_t *const)packet, (et_packet_t *const)rx_packet)) {
684 685 686 687
                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);
              }
688
            } else if (strcmp(comp_results->name, "S1ap-TransportLayerAddress") == 0) {
689
              S1AP_WARN("Some work needed there for %s, TODO in generic_scenario.xsl, add sgw conf file in the process, anyway continuing...\n",comp_results->name);
690 691 692
              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);
693
            } else {
694 695 696 697
              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);
704
        }
705
      }
706 707 708 709
    }
    not_found += 1;
    packet = packet->next;
  }
710
  et_display_packet_sctp(&rx_packet->sctp_hdr);
711
  AssertFatal(0, "Rx packet not found in scenario (see dump above)");
712
  return -1;
713 714
}

715
//------------------------------------------------------------------------------
716
void et_s1ap_eNB_handle_sctp_data_ind(sctp_data_ind_t * const sctp_data_ind)
717 718 719 720 721 722 723 724 725 726 727 728
{
  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;
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  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;
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  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) {
746
      AssertFatal (0, "ERROR Cannot decode RX S1AP message!\n");
747 748 749 750 751 752 753 754 755
    }

  }

  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);

756 757 758 759
  memset((void*)&event, 0, sizeof(event));
  event.code = ET_EVENT_TICK;
  et_scenario_fsm_notify_event(event);

760
}
761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823
//------------------------------------------------------------------------------
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;
824 825 826
  int              ret;
  unsigned int     old_enb_port = 0;
  unsigned int     old_mme_port = 0;
827

828 829 830
  S1AP_DEBUG("%s for SCTP association (%u)\n",__FUNCTION__,assoc_id);

  packet = g_scenario->list_packet;
831 832 833 834
  while (NULL != packet) {
    switch (packet->sctp_hdr.chunk_type) {

      case SCTP_CID_DATA :
835
        S1AP_DEBUG("%s for SCTP association (%u) SCTP_CID_DATA\n",__FUNCTION__,assoc_id);
836
        if ((ET_PACKET_STATUS_NONE == packet->status) || (ET_PACKET_STATUS_SCHEDULED_FOR_RECEIVING == packet->status)) {
837
          if (0 < old_mme_port) {
838
            if (packet->action == ET_PACKET_ACTION_S1C_SEND) {
839 840 841 842 843 844 845 846 847 848 849 850
              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);
                  }
                }
              }
851
            } else if (packet->action == ET_PACKET_ACTION_S1C_RECEIVE) {
852 853 854 855 856 857 858 859 860 861 862 863 864 865
              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);
                  }
                }
              }
            }
          }
866 867 868
        }
        break;

869 870
        // Strong assumption
        // in replayed scenario, the order of SCTP INIT packets is supposed to be the same as in the catched scenario
871
      case SCTP_CID_INIT:
872
        S1AP_DEBUG("%s for SCTP association (%u) SCTP_CID_INIT\n",__FUNCTION__,assoc_id);
873 874 875 876 877 878 879 880
        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;
881
                S1AP_DEBUG("%s for SCTP association (%u) SCTP_CID_INIT SUCCESS\n",__FUNCTION__,assoc_id);
882 883 884 885 886 887
              }
            }
          }
        }
        break;

888
      case SCTP_CID_INIT_ACK:
889 890
        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);
891
        if (0 == ret) {
892
          ret = et_compare_et_ip_to_net_ip_address(&packet->ip_hdr.dst, &s1ap_eNB_instance->s1c_net_ip_address);
893 894 895 896 897
          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;
898
                S1AP_DEBUG("%s for SCTP association (%u) SCTP_CID_INIT_ACK SUCCESS\n",__FUNCTION__,assoc_id);
899 900 901 902 903 904
              }
            }
          }
        }
        break;

905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921
      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:
922
        AssertFatal(0, "Unknown chunk_type %d packet num %u", packet->sctp_hdr.chunk_type, packet->packet_number);
923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959
        ;
    }
    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 --;
960
      mme_desc_p->s1ap_eNB_instance->s1ap_mme_associated_nb++;
961 962 963 964 965 966
    }

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

967

968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996
    /* 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);
997
    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);
998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013
  } 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;
1014
    memcpy((void*)&new_instance->s1c_net_ip_address, (void*)&s1ap_register_eNB->enb_ip_address, sizeof(new_instance->s1c_net_ip_address));
1015 1016 1017 1018 1019 1020 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

    /* 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;
  }

1064 1065 1066 1067
  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);
1068 1069 1070 1071 1072 1073 1074 1075
  /* 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:
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      S1AP_WARN("*** Exiting S1AP thread\n");
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      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_MSG_DESTINATION_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_MSG_DESTINATION_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;
}