x2ap_eNB_generate_messages.c 93.4 KB
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/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

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/*! \file x2ap_eNB_generate_messages.c
 * \brief x2ap procedures for eNB
 * \author Konstantinos Alexandris <Konstantinos.Alexandris@eurecom.fr>, Cedric Roux <Cedric.Roux@eurecom.fr>, Navid Nikaein <Navid.Nikaein@eurecom.fr>
 * \date 2018
 * \version 1.0
 */

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#include "intertask_interface.h"

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#include "X2AP_LastVisitedCell-Item.h"
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#include "X2AP_FreqBandNrItem.h"
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#include "x2ap_common.h"
#include "x2ap_eNB.h"
#include "x2ap_eNB_generate_messages.h"
#include "x2ap_eNB_encoder.h"
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#include "x2ap_eNB_decoder.h"
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#include "x2ap_ids.h"
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#include "x2ap_eNB_itti_messaging.h"
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#include "X2AP_SupportedSULFreqBandItem.h"
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#include "msc.h"
#include "assertions.h"
#include "conversions.h"

int x2ap_eNB_generate_x2_setup_request(
  x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p)
{
  X2AP_X2AP_PDU_t                     pdu;
  X2AP_X2SetupRequest_t              *out;
  X2AP_X2SetupRequest_IEs_t          *ie;
  X2AP_PLMN_Identity_t               *plmn;
  ServedCells__Member                *servedCellMember;
  X2AP_GU_Group_ID_t                 *gu;

  uint8_t  *buffer;
  uint32_t  len;
  int       ret = 0;

  DevAssert(instance_p != NULL);
  DevAssert(x2ap_eNB_data_p != NULL);

  x2ap_eNB_data_p->state = X2AP_ENB_STATE_WAITING;

  /* Prepare the X2AP message to encode */
  memset(&pdu, 0, sizeof(pdu));
  pdu.present = X2AP_X2AP_PDU_PR_initiatingMessage;
  pdu.choice.initiatingMessage.procedureCode = X2AP_ProcedureCode_id_x2Setup;
  pdu.choice.initiatingMessage.criticality = X2AP_Criticality_reject;
  pdu.choice.initiatingMessage.value.present = X2AP_InitiatingMessage__value_PR_X2SetupRequest;
  out = &pdu.choice.initiatingMessage.value.choice.X2SetupRequest;

  /* mandatory */
  ie = (X2AP_X2SetupRequest_IEs_t *)calloc(1, sizeof(X2AP_X2SetupRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_GlobalENB_ID;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_X2SetupRequest_IEs__value_PR_GlobalENB_ID;
  MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
                    &ie->value.choice.GlobalENB_ID.pLMN_Identity);
  ie->value.choice.GlobalENB_ID.eNB_ID.present = X2AP_ENB_ID_PR_macro_eNB_ID;
  MACRO_ENB_ID_TO_BIT_STRING(instance_p->eNB_id,
                             &ie->value.choice.GlobalENB_ID.eNB_ID.choice.macro_eNB_ID);
  X2AP_INFO("%d -> %02x%02x%02x\n", instance_p->eNB_id,
            ie->value.choice.GlobalENB_ID.eNB_ID.choice.macro_eNB_ID.buf[0],
            ie->value.choice.GlobalENB_ID.eNB_ID.choice.macro_eNB_ID.buf[1],
            ie->value.choice.GlobalENB_ID.eNB_ID.choice.macro_eNB_ID.buf[2]);
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_X2SetupRequest_IEs_t *)calloc(1, sizeof(X2AP_X2SetupRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_ServedCells;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_X2SetupRequest_IEs__value_PR_ServedCells;
  {
    for (int i = 0; i<instance_p->num_cc; i++){
      servedCellMember = (ServedCells__Member *)calloc(1,sizeof(ServedCells__Member));
      {
        servedCellMember->servedCellInfo.pCI = instance_p->Nid_cell[i];

        MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
                      &servedCellMember->servedCellInfo.cellId.pLMN_Identity);
        MACRO_ENB_ID_TO_CELL_IDENTITY(instance_p->eNB_id,0,
                                   &servedCellMember->servedCellInfo.cellId.eUTRANcellIdentifier);

        INT16_TO_OCTET_STRING(instance_p->tac, &servedCellMember->servedCellInfo.tAC);
        plmn = (X2AP_PLMN_Identity_t *)calloc(1,sizeof(X2AP_PLMN_Identity_t));
        {
          MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length, plmn);
          ASN_SEQUENCE_ADD(&servedCellMember->servedCellInfo.broadcastPLMNs.list, plmn);
        }

	if (instance_p->frame_type[i] == FDD) {
          servedCellMember->servedCellInfo.eUTRA_Mode_Info.present = X2AP_EUTRA_Mode_Info_PR_fDD;
          servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_EARFCN = instance_p->fdd_earfcn_DL[i];
          servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_EARFCN = instance_p->fdd_earfcn_UL[i];
          switch (instance_p->N_RB_DL[i]) {
            case 6:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw6;
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw6;
              break;
            case 15:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw15;
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw15;
              break;
            case 25:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw25;
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw25;
              break;
            case 50:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw50;
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw50;
              break;
            case 75:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw75;
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw75;
              break;
            case 100:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw100;
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw100;
              break;
            default:
              AssertFatal(0,"Failed: Check value for N_RB_DL/N_RB_UL");
              break;
          }
        }
        else {
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          servedCellMember->servedCellInfo.eUTRA_Mode_Info.present = X2AP_EUTRA_Mode_Info_PR_tDD;
          servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.eARFCN = instance_p->fdd_earfcn_DL[i];
          switch (instance_p->subframeAssignment[i]) {
            case 0:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa0;
              break;
            case 1:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa1;
              break;
            case 2:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa2;
              break;
            case 3:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa3;
              break;
            case 4:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa4;
              break;
            case 5:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa5;
              break;
            case 6:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa6;
              break;
            default:
              AssertFatal(0,"Failed: Check value for subframeAssignment");
              break;
          }
          switch (instance_p->specialSubframe[i]) {
            case 0:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp0;
              break;
            case 1:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp1;
              break;
            case 2:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp2;
              break;
            case 3:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp3;
              break;
            case 4:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp4;
              break;
            case 5:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp5;
              break;
            case 6:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp6;
              break;
            case 7:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp7;
              break;
            case 8:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp8;
              break;
            default:
              AssertFatal(0,"Failed: Check value for subframeAssignment");
              break;
          }
          servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.cyclicPrefixDL=X2AP_CyclicPrefixDL_normal;
          servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.cyclicPrefixUL=X2AP_CyclicPrefixUL_normal;
          
          switch (instance_p->N_RB_DL[i]) {
            case 6:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw6;
              break;
            case 15:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw15;
              break;
            case 25:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw25;
              break;
            case 50:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw50;
              break;
            case 75:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw75;
              break;
            case 100:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw100;
              break;
            default:
              AssertFatal(0,"Failed: Check value for N_RB_DL/N_RB_UL");
              break;
          }
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        }
      }
      ASN_SEQUENCE_ADD(&ie->value.choice.ServedCells.list, servedCellMember);
    }
  }
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_X2SetupRequest_IEs_t *)calloc(1, sizeof(X2AP_X2SetupRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_GUGroupIDList;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_X2SetupRequest_IEs__value_PR_GUGroupIDList;
  {
    gu = (X2AP_GU_Group_ID_t *)calloc(1, sizeof(X2AP_GU_Group_ID_t));
    {
      MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
                    &gu->pLMN_Identity);
      //@TODO: consider to update this value
      INT16_TO_OCTET_STRING(0, &gu->mME_Group_ID);
    }
    ASN_SEQUENCE_ADD(&ie->value.choice.GUGroupIDList.list, gu);
  }
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
    X2AP_ERROR("Failed to encode X2 setup request\n");
    return -1;
  }

  MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB, MSC_X2AP_TARGET_ENB, NULL, 0, "0 X2Setup/initiatingMessage assoc_id %u", x2ap_eNB_data_p->assoc_id);

  x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 0);

  return ret;
}

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int x2ap_eNB_generate_x2_setup_response(x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p)
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{
  X2AP_X2AP_PDU_t                     pdu;
  X2AP_X2SetupResponse_t              *out;
  X2AP_X2SetupResponse_IEs_t          *ie;
  X2AP_PLMN_Identity_t                *plmn;
  ServedCells__Member                 *servedCellMember;
  X2AP_GU_Group_ID_t                  *gu;

  uint8_t  *buffer;
  uint32_t  len;
  int       ret = 0;

  DevAssert(instance_p != NULL);
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  DevAssert(x2ap_eNB_data_p != NULL);
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  /* Prepare the X2AP message to encode */
  memset(&pdu, 0, sizeof(pdu));
  pdu.present = X2AP_X2AP_PDU_PR_successfulOutcome;
  pdu.choice.successfulOutcome.procedureCode = X2AP_ProcedureCode_id_x2Setup;
  pdu.choice.successfulOutcome.criticality = X2AP_Criticality_reject;
  pdu.choice.successfulOutcome.value.present = X2AP_SuccessfulOutcome__value_PR_X2SetupResponse;
  out = &pdu.choice.successfulOutcome.value.choice.X2SetupResponse;

  /* mandatory */
  ie = (X2AP_X2SetupResponse_IEs_t *)calloc(1, sizeof(X2AP_X2SetupResponse_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_GlobalENB_ID;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_X2SetupResponse_IEs__value_PR_GlobalENB_ID;
  MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
                    &ie->value.choice.GlobalENB_ID.pLMN_Identity);
  ie->value.choice.GlobalENB_ID.eNB_ID.present = X2AP_ENB_ID_PR_macro_eNB_ID;
  MACRO_ENB_ID_TO_BIT_STRING(instance_p->eNB_id,
                             &ie->value.choice.GlobalENB_ID.eNB_ID.choice.macro_eNB_ID);
  X2AP_INFO("%d -> %02x%02x%02x\n", instance_p->eNB_id,
            ie->value.choice.GlobalENB_ID.eNB_ID.choice.macro_eNB_ID.buf[0],
            ie->value.choice.GlobalENB_ID.eNB_ID.choice.macro_eNB_ID.buf[1],
            ie->value.choice.GlobalENB_ID.eNB_ID.choice.macro_eNB_ID.buf[2]);
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_X2SetupResponse_IEs_t *)calloc(1, sizeof(X2AP_X2SetupResponse_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_ServedCells;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_X2SetupResponse_IEs__value_PR_ServedCells;
  {
    for (int i = 0; i<instance_p->num_cc; i++){
      servedCellMember = (ServedCells__Member *)calloc(1,sizeof(ServedCells__Member));
      {
        servedCellMember->servedCellInfo.pCI = instance_p->Nid_cell[i];

        MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
                      &servedCellMember->servedCellInfo.cellId.pLMN_Identity);
        MACRO_ENB_ID_TO_CELL_IDENTITY(instance_p->eNB_id,0,
                                   &servedCellMember->servedCellInfo.cellId.eUTRANcellIdentifier);

        INT16_TO_OCTET_STRING(instance_p->tac, &servedCellMember->servedCellInfo.tAC);
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        X2AP_INFO("TAC: %d -> %02x%02x\n", instance_p->tac,
       		  	  servedCellMember->servedCellInfo.tAC.buf[0],
				  servedCellMember->servedCellInfo.tAC.buf[1]);

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        plmn = (X2AP_PLMN_Identity_t *)calloc(1,sizeof(X2AP_PLMN_Identity_t));
        {
          MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length, plmn);
          ASN_SEQUENCE_ADD(&servedCellMember->servedCellInfo.broadcastPLMNs.list, plmn);
        }

	if (instance_p->frame_type[i] == FDD) {
          servedCellMember->servedCellInfo.eUTRA_Mode_Info.present = X2AP_EUTRA_Mode_Info_PR_fDD;
          servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_EARFCN = instance_p->fdd_earfcn_DL[i];
          servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_EARFCN = instance_p->fdd_earfcn_UL[i];
          switch (instance_p->N_RB_DL[i]) {
            case 6:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw6;
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw6;
              break;
            case 15:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw15;
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw15;
              break;
            case 25:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw25;
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw25;
              break;
            case 50:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw50;
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw50;
              break;
            case 75:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw75;
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw75;
              break;
            case 100:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw100;
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw100;
              break;
            default:
              AssertFatal(0,"Failed: Check value for N_RB_DL/N_RB_UL");
              break;
          }
        }
        else {
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          servedCellMember->servedCellInfo.eUTRA_Mode_Info.present = X2AP_EUTRA_Mode_Info_PR_tDD;
          servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.eARFCN = instance_p->fdd_earfcn_DL[i];
          switch (instance_p->subframeAssignment[i]) {
            case 0:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa0;
              break;
            case 1:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa1;
              break;
            case 2:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa2;
              break;
            case 3:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa3;
              break;
            case 4:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa4;
              break;
            case 5:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa5;
              break;
            case 6:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.subframeAssignment = X2AP_SubframeAssignment_sa6;
              break;
            default:
              AssertFatal(0,"Failed: Check value for subframeAssignment");
              break;
          }
          switch (instance_p->specialSubframe[i]) {
            case 0:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp0;
              break;
            case 1:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp1;
              break;
            case 2:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp2;
              break;
            case 3:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp3;
              break;
            case 4:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp4;
              break;
            case 5:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp5;
              break;
            case 6:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp6;
              break;
            case 7:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp7;
              break;
            case 8:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.specialSubframePatterns = X2AP_SpecialSubframePatterns_ssp8;
              break;
            default:
              AssertFatal(0,"Failed: Check value for subframeAssignment");
              break;
          }
          servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.cyclicPrefixDL=X2AP_CyclicPrefixDL_normal;
          servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.specialSubframe_Info.cyclicPrefixUL=X2AP_CyclicPrefixUL_normal;
          
          switch (instance_p->N_RB_DL[i]) {
            case 6:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw6;
              break;
            case 15:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw15;
              break;
            case 25:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw25;
              break;
            case 50:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw50;
              break;
            case 75:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw75;
              break;
            case 100:
              servedCellMember->servedCellInfo.eUTRA_Mode_Info.choice.tDD.transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw100;
              break;
            default:
              AssertFatal(0,"Failed: Check value for N_RB_DL/N_RB_UL");
              break;
          }
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        }
      }
      ASN_SEQUENCE_ADD(&ie->value.choice.ServedCells.list, servedCellMember);
    }
  }
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_X2SetupResponse_IEs_t *)calloc(1, sizeof(X2AP_X2SetupResponse_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_GUGroupIDList;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_X2SetupResponse_IEs__value_PR_GUGroupIDList;
  {
    gu = (X2AP_GU_Group_ID_t *)calloc(1, sizeof(X2AP_GU_Group_ID_t));
    {
      MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
                    &gu->pLMN_Identity);
      //@TODO: consider to update this value
      INT16_TO_OCTET_STRING(0, &gu->mME_Group_ID);
    }
    ASN_SEQUENCE_ADD(&ie->value.choice.GUGroupIDList.list, gu);
  }
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
    X2AP_ERROR("Failed to encode X2 setup response\n");
    return -1;
  }

  x2ap_eNB_data_p->state = X2AP_ENB_STATE_READY;

  MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB, MSC_X2AP_TARGET_ENB, NULL, 0, "0 X2Setup/successfulOutcome assoc_id %u", x2ap_eNB_data_p->assoc_id);

  x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 0);

  return ret;
}

int x2ap_eNB_generate_x2_setup_failure(instance_t instance,
                                       uint32_t assoc_id,
                                       X2AP_Cause_PR cause_type,
                                       long cause_value,
                                       long time_to_wait)
{
  X2AP_X2AP_PDU_t                     pdu;
  X2AP_X2SetupFailure_t              *out;
  X2AP_X2SetupFailure_IEs_t          *ie;

  uint8_t  *buffer;
  uint32_t  len;
  int       ret = 0;

  /* Prepare the X2AP message to encode */
  memset(&pdu, 0, sizeof(pdu));
  pdu.present = X2AP_X2AP_PDU_PR_unsuccessfulOutcome;
  pdu.choice.unsuccessfulOutcome.procedureCode = X2AP_ProcedureCode_id_x2Setup;
  pdu.choice.unsuccessfulOutcome.criticality = X2AP_Criticality_reject;
  pdu.choice.unsuccessfulOutcome.value.present = X2AP_UnsuccessfulOutcome__value_PR_X2SetupFailure;
  out = &pdu.choice.unsuccessfulOutcome.value.choice.X2SetupFailure;

  /* mandatory */
  ie = (X2AP_X2SetupFailure_IEs_t *)calloc(1, sizeof(X2AP_X2SetupFailure_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_Cause;
  ie->criticality = X2AP_Criticality_ignore;
  ie->value.present = X2AP_X2SetupFailure_IEs__value_PR_Cause;

  x2ap_eNB_set_cause (&ie->value.choice.Cause, cause_type, cause_value);

  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* optional: consider to handle this later */
  ie = (X2AP_X2SetupFailure_IEs_t *)calloc(1, sizeof(X2AP_X2SetupFailure_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_TimeToWait;
  ie->criticality = X2AP_Criticality_ignore;
  ie->value.present = X2AP_X2SetupFailure_IEs__value_PR_TimeToWait;

  if (time_to_wait > -1) {
    ie->value.choice.TimeToWait = time_to_wait;
  }

  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
    X2AP_ERROR("Failed to encode X2 setup failure\n");
    return -1;
  }

  MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB,
                      MSC_X2AP_TARGET_ENB, NULL, 0,
                      "0 X2Setup/unsuccessfulOutcome  assoc_id %u cause %u value %u",
                      assoc_id, cause_type, cause_value);

  x2ap_eNB_itti_send_sctp_data_req(instance, assoc_id, buffer, len, 0);

  return ret;
}

int x2ap_eNB_set_cause (X2AP_Cause_t * cause_p,
                        X2AP_Cause_PR cause_type,
                        long cause_value)
{

  DevAssert (cause_p != NULL);
  cause_p->present = cause_type;

  switch (cause_type) {
  case X2AP_Cause_PR_radioNetwork:
    cause_p->choice.misc = cause_value;
    break;

  case X2AP_Cause_PR_transport:
    cause_p->choice.misc = cause_value;
    break;

  case X2AP_Cause_PR_protocol:
    cause_p->choice.misc = cause_value;
    break;

  case X2AP_Cause_PR_misc:
    cause_p->choice.misc = cause_value;
    break;

  default:
    return -1;
  }

  return 0;
}
587

588
int x2ap_eNB_generate_x2_handover_request (x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p,
589
                                           x2ap_handover_req_t *x2ap_handover_req, int ue_id)
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{

  X2AP_X2AP_PDU_t                     pdu;
  X2AP_HandoverRequest_t              *out;
  X2AP_HandoverRequest_IEs_t          *ie;
  X2AP_E_RABs_ToBeSetup_ItemIEs_t     *e_RABS_ToBeSetup_ItemIEs;
  X2AP_E_RABs_ToBeSetup_Item_t        *e_RABs_ToBeSetup_Item;
  X2AP_LastVisitedCell_Item_t         *lastVisitedCell_Item;

  uint8_t  *buffer;
  uint32_t  len;
  int       ret = 0;

  DevAssert(instance_p != NULL);
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  DevAssert(x2ap_eNB_data_p != NULL);
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  /* Prepare the X2AP handover message to encode */
  memset(&pdu, 0, sizeof(pdu));
  pdu.present = X2AP_X2AP_PDU_PR_initiatingMessage;
  pdu.choice.initiatingMessage.procedureCode = X2AP_ProcedureCode_id_handoverPreparation;
  pdu.choice.initiatingMessage.criticality = X2AP_Criticality_reject;
  pdu.choice.initiatingMessage.value.present = X2AP_InitiatingMessage__value_PR_HandoverRequest;
  out = &pdu.choice.initiatingMessage.value.choice.HandoverRequest;

  /* mandatory */
  ie = (X2AP_HandoverRequest_IEs_t *)calloc(1, sizeof(X2AP_HandoverRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_Old_eNB_UE_X2AP_ID;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_HandoverRequest_IEs__value_PR_UE_X2AP_ID;
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  ie->value.choice.UE_X2AP_ID = x2ap_id_get_id_source(&instance_p->id_manager, ue_id);
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  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_HandoverRequest_IEs_t *)calloc(1, sizeof(X2AP_HandoverRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_Cause;
  ie->criticality = X2AP_Criticality_ignore;
  ie->value.present = X2AP_HandoverRequest_IEs__value_PR_Cause;
  ie->value.choice.Cause.present = X2AP_Cause_PR_radioNetwork;
  ie->value.choice.Cause.choice.radioNetwork = X2AP_CauseRadioNetwork_handover_desirable_for_radio_reasons;
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_HandoverRequest_IEs_t *)calloc(1, sizeof(X2AP_HandoverRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_TargetCell_ID;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_HandoverRequest_IEs__value_PR_ECGI;
  MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
                       &ie->value.choice.ECGI.pLMN_Identity);
638
  MACRO_ENB_ID_TO_CELL_IDENTITY(x2ap_eNB_data_p->eNB_id, 0, &ie->value.choice.ECGI.eUTRANcellIdentifier);
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  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_HandoverRequest_IEs_t *)calloc(1, sizeof(X2AP_HandoverRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_GUMMEI_ID;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_HandoverRequest_IEs__value_PR_GUMMEI;
  MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
                       &ie->value.choice.GUMMEI.gU_Group_ID.pLMN_Identity);
  //@TODO: consider to update these values
  INT16_TO_OCTET_STRING(x2ap_handover_req->ue_gummei.mme_group_id, &ie->value.choice.GUMMEI.gU_Group_ID.mME_Group_ID);
  MME_CODE_TO_OCTET_STRING(x2ap_handover_req->ue_gummei.mme_code, &ie->value.choice.GUMMEI.mME_Code);
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_HandoverRequest_IEs_t *)calloc(1, sizeof(X2AP_HandoverRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_UE_ContextInformation;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_HandoverRequest_IEs__value_PR_UE_ContextInformation;
  //@TODO: consider to update this value
  ie->value.choice.UE_ContextInformation.mME_UE_S1AP_ID = x2ap_handover_req->mme_ue_s1ap_id;

  KENB_STAR_TO_BIT_STRING(x2ap_handover_req->kenb,&ie->value.choice.UE_ContextInformation.aS_SecurityInformation.key_eNodeB_star);

  if (x2ap_handover_req->kenb_ncc >=0) { // Check this condition
    ie->value.choice.UE_ContextInformation.aS_SecurityInformation.nextHopChainingCount = x2ap_handover_req->kenb_ncc;
  }
  else {
    ie->value.choice.UE_ContextInformation.aS_SecurityInformation.nextHopChainingCount = 1;
  }

  ENCRALG_TO_BIT_STRING(x2ap_handover_req->security_capabilities.encryption_algorithms,
              &ie->value.choice.UE_ContextInformation.uESecurityCapabilities.encryptionAlgorithms);

  INTPROTALG_TO_BIT_STRING(x2ap_handover_req->security_capabilities.integrity_algorithms,
              &ie->value.choice.UE_ContextInformation.uESecurityCapabilities.integrityProtectionAlgorithms);

  //@TODO: update with proper UEAMPR
  UEAGMAXBITRTD_TO_ASN_PRIMITIVES(3L,&ie->value.choice.UE_ContextInformation.uEaggregateMaximumBitRate.uEaggregateMaximumBitRateDownlink);
  UEAGMAXBITRTU_TO_ASN_PRIMITIVES(6L,&ie->value.choice.UE_ContextInformation.uEaggregateMaximumBitRate.uEaggregateMaximumBitRateUplink);
  {
    for (int i=0;i<x2ap_handover_req->nb_e_rabs_tobesetup;i++) {
      e_RABS_ToBeSetup_ItemIEs = (X2AP_E_RABs_ToBeSetup_ItemIEs_t *)calloc(1,sizeof(X2AP_E_RABs_ToBeSetup_ItemIEs_t));
      e_RABS_ToBeSetup_ItemIEs->id = X2AP_ProtocolIE_ID_id_E_RABs_ToBeSetup_Item;
      e_RABS_ToBeSetup_ItemIEs->criticality = X2AP_Criticality_ignore;
      e_RABS_ToBeSetup_ItemIEs->value.present = X2AP_E_RABs_ToBeSetup_ItemIEs__value_PR_E_RABs_ToBeSetup_Item;
      e_RABs_ToBeSetup_Item = &e_RABS_ToBeSetup_ItemIEs->value.choice.E_RABs_ToBeSetup_Item;
      {
        e_RABs_ToBeSetup_Item->e_RAB_ID = x2ap_handover_req->e_rabs_tobesetup[i].e_rab_id;
        e_RABs_ToBeSetup_Item->e_RAB_Level_QoS_Parameters.qCI = x2ap_handover_req->e_rab_param[i].qos.qci;
        e_RABs_ToBeSetup_Item->e_RAB_Level_QoS_Parameters.allocationAndRetentionPriority.priorityLevel = x2ap_handover_req->e_rab_param[i].qos.allocation_retention_priority.priority_level;
        e_RABs_ToBeSetup_Item->e_RAB_Level_QoS_Parameters.allocationAndRetentionPriority.pre_emptionCapability = x2ap_handover_req->e_rab_param[i].qos.allocation_retention_priority.pre_emp_capability;
        e_RABs_ToBeSetup_Item->e_RAB_Level_QoS_Parameters.allocationAndRetentionPriority.pre_emptionVulnerability = x2ap_handover_req->e_rab_param[i].qos.allocation_retention_priority.pre_emp_vulnerability;
        e_RABs_ToBeSetup_Item->uL_GTPtunnelEndpoint.transportLayerAddress.size = (uint8_t)(x2ap_handover_req->e_rabs_tobesetup[i].eNB_addr.length/8);
        e_RABs_ToBeSetup_Item->uL_GTPtunnelEndpoint.transportLayerAddress.bits_unused = x2ap_handover_req->e_rabs_tobesetup[i].eNB_addr.length%8;
        e_RABs_ToBeSetup_Item->uL_GTPtunnelEndpoint.transportLayerAddress.buf =
                        calloc(1,e_RABs_ToBeSetup_Item->uL_GTPtunnelEndpoint.transportLayerAddress.size);

        memcpy (e_RABs_ToBeSetup_Item->uL_GTPtunnelEndpoint.transportLayerAddress.buf,
                        x2ap_handover_req->e_rabs_tobesetup[i].eNB_addr.buffer,
                        e_RABs_ToBeSetup_Item->uL_GTPtunnelEndpoint.transportLayerAddress.size);

        INT32_TO_OCTET_STRING(x2ap_handover_req->e_rabs_tobesetup[i].gtp_teid,&e_RABs_ToBeSetup_Item->uL_GTPtunnelEndpoint.gTP_TEID);
      }
      ASN_SEQUENCE_ADD(&ie->value.choice.UE_ContextInformation.e_RABs_ToBeSetup_List.list, e_RABS_ToBeSetup_ItemIEs);
    }
  }

  OCTET_STRING_fromBuf(&ie->value.choice.UE_ContextInformation.rRC_Context, (char*) x2ap_handover_req->rrc_buffer, x2ap_handover_req->rrc_buffer_size);

  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_HandoverRequest_IEs_t *)calloc(1, sizeof(X2AP_HandoverRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_UE_HistoryInformation;
  ie->criticality = X2AP_Criticality_ignore;
  ie->value.present = X2AP_HandoverRequest_IEs__value_PR_UE_HistoryInformation;
  //@TODO: consider to update this value
  {
   lastVisitedCell_Item = (X2AP_LastVisitedCell_Item_t *)calloc(1, sizeof(X2AP_LastVisitedCell_Item_t));
   lastVisitedCell_Item->present = X2AP_LastVisitedCell_Item_PR_e_UTRAN_Cell;
   MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
                       &lastVisitedCell_Item->choice.e_UTRAN_Cell.global_Cell_ID.pLMN_Identity);
   MACRO_ENB_ID_TO_CELL_IDENTITY(0, 0, &lastVisitedCell_Item->choice.e_UTRAN_Cell.global_Cell_ID.eUTRANcellIdentifier);
   lastVisitedCell_Item->choice.e_UTRAN_Cell.cellType.cell_Size = X2AP_Cell_Size_small;
   lastVisitedCell_Item->choice.e_UTRAN_Cell.time_UE_StayedInCell = 2;
   ASN_SEQUENCE_ADD(&ie->value.choice.UE_HistoryInformation.list, lastVisitedCell_Item);
  }

  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
    X2AP_ERROR("Failed to encode X2 handover request\n");
    abort();
    return -1;
  }

  MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB, MSC_X2AP_TARGET_ENB, NULL, 0, "0 X2Handover/initiatingMessage assoc_id %u", x2ap_eNB_data_p->assoc_id);

  x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 1);

  return ret;
}

743
int x2ap_eNB_generate_x2_handover_request_ack (x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p,
744 745 746 747 748 749 750 751
                                               x2ap_handover_req_ack_t *x2ap_handover_req_ack)
{

  X2AP_X2AP_PDU_t                        pdu;
  X2AP_HandoverRequestAcknowledge_t      *out;
  X2AP_HandoverRequestAcknowledge_IEs_t  *ie;
  X2AP_E_RABs_Admitted_ItemIEs_t         *e_RABS_Admitted_ItemIEs;
  X2AP_E_RABs_Admitted_Item_t            *e_RABs_Admitted_Item;
752 753 754
  int                                    ue_id;
  int                                    id_source;
  int                                    id_target;
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  uint8_t  *buffer;
  uint32_t  len;
  int       ret = 0;

  DevAssert(instance_p != NULL);
761
  DevAssert(x2ap_eNB_data_p != NULL);
762

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  ue_id     = x2ap_handover_req_ack->x2_id_target;
  id_source = x2ap_id_get_id_source(&instance_p->id_manager, ue_id);
  id_target = ue_id;

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  /* Prepare the X2AP handover message to encode */
  memset(&pdu, 0, sizeof(pdu));
  pdu.present = X2AP_X2AP_PDU_PR_successfulOutcome;
  pdu.choice.successfulOutcome.procedureCode = X2AP_ProcedureCode_id_handoverPreparation;
  pdu.choice.successfulOutcome.criticality = X2AP_Criticality_reject;
  pdu.choice.successfulOutcome.value.present = X2AP_SuccessfulOutcome__value_PR_HandoverRequestAcknowledge;
  out = &pdu.choice.successfulOutcome.value.choice.HandoverRequestAcknowledge;

  /* mandatory */
  ie = (X2AP_HandoverRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_HandoverRequestAcknowledge_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_Old_eNB_UE_X2AP_ID;
  ie->criticality = X2AP_Criticality_ignore;
  ie->value.present = X2AP_HandoverRequestAcknowledge_IEs__value_PR_UE_X2AP_ID;
780
  ie->value.choice.UE_X2AP_ID = id_source;
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  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_HandoverRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_HandoverRequestAcknowledge_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_New_eNB_UE_X2AP_ID;
  ie->criticality = X2AP_Criticality_ignore;
787
  ie->value.present = X2AP_HandoverRequestAcknowledge_IEs__value_PR_UE_X2AP_ID_1;
788
  ie->value.choice.UE_X2AP_ID_1 = id_target;
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  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_HandoverRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_HandoverRequestAcknowledge_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_E_RABs_Admitted_List;
  ie->criticality = X2AP_Criticality_ignore;
  ie->value.present = X2AP_HandoverRequestAcknowledge_IEs__value_PR_E_RABs_Admitted_List;

  {
      for (int i=0;i<x2ap_handover_req_ack->nb_e_rabs_tobesetup;i++) {
        e_RABS_Admitted_ItemIEs = (X2AP_E_RABs_Admitted_ItemIEs_t *)calloc(1,sizeof(X2AP_E_RABs_Admitted_ItemIEs_t));
        e_RABS_Admitted_ItemIEs->id = X2AP_ProtocolIE_ID_id_E_RABs_Admitted_Item;
        e_RABS_Admitted_ItemIEs->criticality = X2AP_Criticality_ignore;
        e_RABS_Admitted_ItemIEs->value.present = X2AP_E_RABs_Admitted_ItemIEs__value_PR_E_RABs_Admitted_Item;
        e_RABs_Admitted_Item = &e_RABS_Admitted_ItemIEs->value.choice.E_RABs_Admitted_Item;
        {
          e_RABs_Admitted_Item->e_RAB_ID = x2ap_handover_req_ack->e_rabs_tobesetup[i].e_rab_id;
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	  e_RABs_Admitted_Item->uL_GTP_TunnelEndpoint = NULL;
	  e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint = (X2AP_GTPtunnelEndpoint_t *)calloc(1, sizeof(*e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint));
		  
	  e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->transportLayerAddress.size = (uint8_t)x2ap_handover_req_ack->e_rabs_tobesetup[i].eNB_addr.length;
          e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->transportLayerAddress.bits_unused = 0;
          e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->transportLayerAddress.buf =
                        calloc(1, e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->transportLayerAddress.size);

          memcpy (e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->transportLayerAddress.buf,
                  x2ap_handover_req_ack->e_rabs_tobesetup[i].eNB_addr.buffer,
                  e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->transportLayerAddress.size);

          X2AP_DEBUG("X2 handover response target ip addr. length %lu bits_unused %d buf %d.%d.%d.%d\n",
		  e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->transportLayerAddress.size,
		  e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->transportLayerAddress.bits_unused,
		  e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->transportLayerAddress.buf[0],
		  e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->transportLayerAddress.buf[1],
		  e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->transportLayerAddress.buf[2],
		  e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->transportLayerAddress.buf[3]);
		  
          INT32_TO_OCTET_STRING(x2ap_handover_req_ack->e_rabs_tobesetup[i].gtp_teid, &e_RABs_Admitted_Item->dL_GTP_TunnelEndpoint->gTP_TEID);
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        }
        ASN_SEQUENCE_ADD(&ie->value.choice.E_RABs_Admitted_List.list, e_RABS_Admitted_ItemIEs);
      }
  }

  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_HandoverRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_HandoverRequestAcknowledge_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_TargeteNBtoSource_eNBTransparentContainer;
  ie->criticality = X2AP_Criticality_ignore;
  ie->value.present = X2AP_HandoverRequestAcknowledge_IEs__value_PR_TargeteNBtoSource_eNBTransparentContainer;

  OCTET_STRING_fromBuf(&ie->value.choice.TargeteNBtoSource_eNBTransparentContainer, (char*) x2ap_handover_req_ack->rrc_buffer, x2ap_handover_req_ack->rrc_buffer_size);

  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
    X2AP_ERROR("Failed to encode X2 handover response\n");
    abort();
    return -1;
  }

  MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB, MSC_X2AP_TARGET_ENB, NULL, 0, "0 X2Handover/successfulOutcome assoc_id %u", x2ap_eNB_data_p->assoc_id);

  x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 1);

  return ret;
}

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int x2ap_eNB_generate_x2_ue_context_release (x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p, x2ap_ue_context_release_t *x2ap_ue_context_release)
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{

  X2AP_X2AP_PDU_t                pdu;
  X2AP_UEContextRelease_t        *out;
  X2AP_UEContextRelease_IEs_t    *ie;
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  int                            ue_id;
  int                            id_source;
  int                            id_target;
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  uint8_t  *buffer;
  uint32_t  len;
  int       ret = 0;

  DevAssert(instance_p != NULL);
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  DevAssert(x2ap_eNB_data_p != NULL);
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  ue_id = x2ap_find_id_from_rnti(&instance_p->id_manager, x2ap_ue_context_release->rnti);
  if (ue_id == -1) {
    X2AP_ERROR("could not find UE %x\n", x2ap_ue_context_release->rnti);
    exit(1);
  }
  id_source = x2ap_id_get_id_source(&instance_p->id_manager, ue_id);
  id_target = ue_id;

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  /* Prepare the X2AP ue context relase message to encode */
  memset(&pdu, 0, sizeof(pdu));
  pdu.present = X2AP_X2AP_PDU_PR_initiatingMessage;
  pdu.choice.initiatingMessage.procedureCode = X2AP_ProcedureCode_id_uEContextRelease;
  pdu.choice.initiatingMessage.criticality = X2AP_Criticality_ignore;
  pdu.choice.initiatingMessage.value.present = X2AP_InitiatingMessage__value_PR_UEContextRelease;
  out = &pdu.choice.initiatingMessage.value.choice.UEContextRelease;

  /* mandatory */
  ie = (X2AP_UEContextRelease_IEs_t *)calloc(1, sizeof(X2AP_UEContextRelease_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_Old_eNB_UE_X2AP_ID;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_UEContextRelease_IEs__value_PR_UE_X2AP_ID;
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  ie->value.choice.UE_X2AP_ID = id_source;
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  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_UEContextRelease_IEs_t *)calloc(1, sizeof(X2AP_UEContextRelease_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_New_eNB_UE_X2AP_ID;
  ie->criticality = X2AP_Criticality_reject;
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  ie->value.present = X2AP_UEContextRelease_IEs__value_PR_UE_X2AP_ID_1;
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  ie->value.choice.UE_X2AP_ID_1 = id_target;
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  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
    X2AP_ERROR("Failed to encode X2 UE Context Release\n");
    abort();
    return -1;
  }

  MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB, MSC_X2AP_TARGET_ENB, NULL, 0, "0 X2UEContextRelease/initiatingMessage assoc_id %u", x2ap_eNB_data_p->assoc_id);

  x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 1);

  return ret;
}
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int x2ap_eNB_generate_x2_handover_cancel (x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p,
                                          int x2_ue_id,
                                          x2ap_handover_cancel_cause_t cause)
{
  X2AP_X2AP_PDU_t              pdu;
  X2AP_HandoverCancel_t        *out;
  X2AP_HandoverCancel_IEs_t    *ie;
  int                          ue_id;
  int                          id_source;
  int                          id_target;

  uint8_t  *buffer;
  uint32_t  len;
  int       ret = 0;

  DevAssert(instance_p != NULL);
  DevAssert(x2ap_eNB_data_p != NULL);

  ue_id = x2_ue_id;
  id_source = ue_id;
  id_target = x2ap_id_get_id_target(&instance_p->id_manager, ue_id);

  /* Prepare the X2AP handover cancel message to encode */
  memset(&pdu, 0, sizeof(pdu));
  pdu.present = X2AP_X2AP_PDU_PR_initiatingMessage;
  pdu.choice.initiatingMessage.procedureCode = X2AP_ProcedureCode_id_handoverCancel;
  pdu.choice.initiatingMessage.criticality = X2AP_Criticality_ignore;
  pdu.choice.initiatingMessage.value.present = X2AP_InitiatingMessage__value_PR_HandoverCancel;
  out = &pdu.choice.initiatingMessage.value.choice.HandoverCancel;

  /* mandatory */
  ie = (X2AP_HandoverCancel_IEs_t *)calloc(1, sizeof(X2AP_HandoverCancel_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_Old_eNB_UE_X2AP_ID;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_HandoverCancel_IEs__value_PR_UE_X2AP_ID;
  ie->value.choice.UE_X2AP_ID = id_source;
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* optional */
  if (id_target != -1) {
    ie = (X2AP_HandoverCancel_IEs_t *)calloc(1, sizeof(X2AP_HandoverCancel_IEs_t));
    ie->id = X2AP_ProtocolIE_ID_id_New_eNB_UE_X2AP_ID;
    ie->criticality = X2AP_Criticality_ignore;
    ie->value.present = X2AP_HandoverCancel_IEs__value_PR_UE_X2AP_ID_1;
    ie->value.choice.UE_X2AP_ID_1 = id_target;
    ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
  }

  /* mandatory */
  ie = (X2AP_HandoverCancel_IEs_t *)calloc(1, sizeof(X2AP_HandoverCancel_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_Cause;
  ie->criticality = X2AP_Criticality_ignore;
  ie->value.present = X2AP_HandoverCancel_IEs__value_PR_Cause;
  switch (cause) {
  case X2AP_T_RELOC_PREP_TIMEOUT:
    ie->value.choice.Cause.present = X2AP_Cause_PR_radioNetwork;
    ie->value.choice.Cause.choice.radioNetwork =
      X2AP_CauseRadioNetwork_trelocprep_expiry;
    break;
  case X2AP_TX2_RELOC_OVERALL_TIMEOUT:
    ie->value.choice.Cause.present = X2AP_Cause_PR_radioNetwork;
    ie->value.choice.Cause.choice.radioNetwork =
      X2AP_CauseRadioNetwork_tx2relocoverall_expiry;
    break;
  default:
    /* we can't come here */
    X2AP_ERROR("unhandled cancel cause\n");
    exit(1);
  }
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
    X2AP_ERROR("Failed to encode X2 Handover Cancel\n");
    abort();
    return -1;
  }

  MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB, MSC_X2AP_TARGET_ENB, NULL, 0, "0 X2HandoverCancel/initiatingMessage assoc_id %u", x2ap_eNB_data_p->assoc_id);

  x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 1);

  return ret;
}
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int x2ap_eNB_generate_senb_addition_request (x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p
                                             /* TODO: pass needed parameters */)
{
  X2AP_X2AP_PDU_t                pdu;
  X2AP_SeNBAdditionRequest_t     *out;
  X2AP_SeNBAdditionRequest_IEs_t *ie;

  uint8_t  *buffer;
  uint32_t  len;
  int       ret = 0;

  DevAssert(instance_p != NULL);
  DevAssert(x2ap_eNB_data_p != NULL);

  /* Prepare the X2AP SeNB Addition Request message to encode */
  memset(&pdu, 0, sizeof(pdu));
  pdu.present = X2AP_X2AP_PDU_PR_initiatingMessage;
  pdu.choice.initiatingMessage.procedureCode = X2AP_ProcedureCode_id_seNBAdditionPreparation;
  pdu.choice.initiatingMessage.criticality = X2AP_Criticality_reject;
  pdu.choice.initiatingMessage.value.present = X2AP_InitiatingMessage__value_PR_SeNBAdditionRequest;
  out = &pdu.choice.initiatingMessage.value.choice.SeNBAdditionRequest;

  /* id-MeNB-UE-X2AP-ID - mandatory - criticality reject */
  ie = (X2AP_SeNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SeNBAdditionRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_MeNB_UE_X2AP_ID;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_ProtocolIE_ID_id_MeNB_UE_X2AP_ID;
  ie->value.choice.UE_X2AP_ID = 0;                                   /* TODO */
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* id-UE-SecurityCapabilities - conditional - criticality reject */
  /* TODO */

  /* id-SeNBSecurityKey - conditional - criticality reject */
  /* TODO */

  /* id-SeNBUEAggregateMaximumBitRate - mandatory - criticality reject */
  ie = (X2AP_SeNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SeNBAdditionRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_SeNBUEAggregateMaximumBitRate;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_ProtocolIE_ID_id_SeNBUEAggregateMaximumBitRate;
  if (asn_imax2INTEGER(&ie->value.choice.UEAggregateMaximumBitRate.uEaggregateMaximumBitRateDownlink, 0) != 0) { /* TODO: right value */
    LOG_E(X2AP, "%s:%d:%s: fatal asn1 error\n", __FILE__, __LINE__, __FUNCTION__);
    exit(1);
  }
  if (asn_imax2INTEGER(&ie->value.choice.UEAggregateMaximumBitRate.uEaggregateMaximumBitRateUplink, 0) != 0) { /* TODO: right value */
    LOG_E(X2AP, "%s:%d:%s: fatal asn1 error\n", __FILE__, __LINE__, __FUNCTION__);
    exit(1);
  }
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* id-ServingPLMN - optional - criticality ignore */
  /* TODO */

  /* id-E-RABs-ToBeAdded-List - mandatory - criticality reject */
  ie = (X2AP_SeNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SeNBAdditionRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_SeNBUEAggregateMaximumBitRate;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_ProtocolIE_ID_id_E_RABs_ToBeAdded_List;
  /* TODO: set value of ie->value.choice.E_RABs_ToBeAdded_List.list */
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* id-MeNBtoSeNBContainer - mandatory - criticality reject */
  ie = (X2AP_SeNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SeNBAdditionRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_MeNBtoSeNBContainer;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_ProtocolIE_ID_id_MeNBtoSeNBContainer;
  /* TODO: set value of ie->value.choice.MeNBtoSeNBContainer */
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* id-CSGMembershipStatus - optional - criticality reject */
  /* TODO */

  /* id-SeNB-UE-X2AP-ID - optional - criticality reject */
  /* TODO */

  /* id-SeNB-UE-X2AP-ID-Extension - optional - criticality reject */
  /* TODO */

  /* id-ExpectedUEBehaviour - optional - criticality ignore */
  /* TODO */

  /* id-MeNB-UE-X2AP-ID-Extension - optional - criticality reject */
  /* TODO */

  if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
    X2AP_ERROR("Failed to encode X2AP SeNB Addition Request\n");
    abort();
    return -1;
  }

  MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB, MSC_X2AP_TARGET_ENB, NULL, 0, "0 X2SeNBAdditionRequest/initiatingMessage assoc_id %u", x2ap_eNB_data_p->assoc_id);

  x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 1);

  return ret;
}
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int x2ap_eNB_generate_senb_addition_request_ack (x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p,
                                               x2ap_senb_addition_req_ack_t *x2ap_addition_req_ack)
{

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  X2AP_X2AP_PDU_t                                  pdu;
  X2AP_SeNBAdditionRequestAcknowledge_t            *out;
  X2AP_SeNBAdditionRequestAcknowledge_IEs_t        *ie;
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  X2AP_E_RABs_Admitted_ToBeAdded_ItemIEs_t         *e_RABS_Admitted_ToBeAdded_ItemIEs;
  X2AP_E_RABs_Admitted_ToBeAdded_Item_t            *e_RABs_Admitted_ToBeAdded_Item;
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  //int                                    ue_id;
  //int                                    ue_id_MeNB;
  //int                                    ue_id_SeNB;
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  uint8_t  *buffer;
  uint32_t  len;
  int       ret = 0;

  DevAssert(instance_p != NULL);
  DevAssert(x2ap_eNB_data_p != NULL);

  //ue_id     = x2ap_addition_req_ack->x2_id_target; //Panos: change name to master_x2...
  //id_source = x2ap_id_get_id_source(&instance_p->id_manager, ue_id);
  //id_target = ue_id;

  /* Prepare the X2AP addition req. ack. message to encode */
  memset(&pdu, 0, sizeof(pdu));
  pdu.present = X2AP_X2AP_PDU_PR_successfulOutcome;
  pdu.choice.successfulOutcome.procedureCode = X2AP_ProcedureCode_id_seNBAdditionPreparation;
  pdu.choice.successfulOutcome.criticality = X2AP_Criticality_reject;
  pdu.choice.successfulOutcome.value.present = X2AP_SuccessfulOutcome__value_PR_SeNBAdditionRequestAcknowledge;
  out = &pdu.choice.successfulOutcome.value.choice.SeNBAdditionRequestAcknowledge;

  /* mandatory */
  ie = (X2AP_SeNBAdditionRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_SeNBAdditionRequestAcknowledge_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_MeNB_UE_X2AP_ID;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_SeNBAdditionRequestAcknowledge_IEs__value_PR_UE_X2AP_ID;
  ie->value.choice.UE_X2AP_ID = 0;
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_SeNBAdditionRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_SeNBAdditionRequestAcknowledge_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_SeNB_UE_X2AP_ID;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_SeNBAdditionRequestAcknowledge_IEs__value_PR_UE_X2AP_ID_1;
  ie->value.choice.UE_X2AP_ID_1 = 0;
  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_SeNBAdditionRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_SeNBAdditionRequestAcknowledge_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_E_RABs_Admitted_ToBeAdded_List;
  ie->criticality = X2AP_Criticality_ignore;
  ie->value.present = X2AP_SeNBAdditionRequestAcknowledge_IEs__value_PR_E_RABs_Admitted_ToBeAdded_List;

  {
	  // SCG bearers to be added
      for (int i=0;i<x2ap_addition_req_ack->nb_sCG_e_rabs_tobeadded;i++) {
    	e_RABS_Admitted_ToBeAdded_ItemIEs = (X2AP_E_RABs_Admitted_ToBeAdded_ItemIEs_t *)calloc(1,sizeof(X2AP_E_RABs_Admitted_ToBeAdded_ItemIEs_t));
    	e_RABS_Admitted_ToBeAdded_ItemIEs->id = X2AP_ProtocolIE_ID_id_E_RABs_Admitted_ToBeAdded_Item;
    	e_RABS_Admitted_ToBeAdded_ItemIEs->criticality = X2AP_Criticality_ignore;
    	e_RABS_Admitted_ToBeAdded_ItemIEs->value.present = X2AP_E_RABs_Admitted_ToBeAdded_ItemIEs__value_PR_E_RABs_Admitted_ToBeAdded_Item;
    	e_RABs_Admitted_ToBeAdded_Item = &e_RABS_Admitted_ToBeAdded_ItemIEs->value.choice.E_RABs_Admitted_ToBeAdded_Item;
        {
    		e_RABs_Admitted_ToBeAdded_Item->choice.sCG_Bearer.e_RAB_ID = x2ap_addition_req_ack->e_sCG_rabs_tobeadded[i].e_rab_id;
    		INT32_TO_OCTET_STRING(x2ap_addition_req_ack->e_sCG_rabs_tobeadded[i].gtp_teid, &e_RABs_Admitted_ToBeAdded_Item->choice.sCG_Bearer.s1_DL_GTPtunnelEndpoint.gTP_TEID);

    		e_RABs_Admitted_ToBeAdded_Item->choice.sCG_Bearer.s1_DL_GTPtunnelEndpoint.transportLayerAddress.size 		= (uint8_t)(x2ap_addition_req_ack->e_sCG_rabs_tobeadded[i].eNB_addr.length/8);
    		e_RABs_Admitted_ToBeAdded_Item->choice.sCG_Bearer.s1_DL_GTPtunnelEndpoint.transportLayerAddress.bits_unused = x2ap_addition_req_ack->e_sCG_rabs_tobeadded[i].eNB_addr.length%8;
    		e_RABs_Admitted_ToBeAdded_Item->choice.sCG_Bearer.s1_DL_GTPtunnelEndpoint.transportLayerAddress.buf =
    		                        calloc(1,e_RABs_Admitted_ToBeAdded_Item->choice.sCG_Bearer.s1_DL_GTPtunnelEndpoint.transportLayerAddress.size);

    		        memcpy (e_RABs_Admitted_ToBeAdded_Item->choice.sCG_Bearer.s1_DL_GTPtunnelEndpoint.transportLayerAddress.buf,
    		        		x2ap_addition_req_ack->e_sCG_rabs_tobeadded[i].eNB_addr.buffer,
    		        		e_RABs_Admitted_ToBeAdded_Item->choice.sCG_Bearer.s1_DL_GTPtunnelEndpoint.transportLayerAddress.size);

        }
        ASN_SEQUENCE_ADD(&ie->value.choice.E_RABs_Admitted_ToBeAdded_List.list, e_RABS_Admitted_ToBeAdded_ItemIEs);
      }

      // Split bearers to be added
      for (int i=0;i<x2ap_addition_req_ack->nb_split_e_rabs_tobeadded;i++) {
    	  e_RABS_Admitted_ToBeAdded_ItemIEs = (X2AP_E_RABs_Admitted_ToBeAdded_ItemIEs_t *)calloc(1,sizeof(X2AP_E_RABs_Admitted_ToBeAdded_ItemIEs_t));
    	  e_RABS_Admitted_ToBeAdded_ItemIEs->id = X2AP_ProtocolIE_ID_id_E_RABs_Admitted_ToBeAdded_Item;
    	  e_RABS_Admitted_ToBeAdded_ItemIEs->criticality = X2AP_Criticality_ignore;
    	  e_RABS_Admitted_ToBeAdded_ItemIEs->value.present = X2AP_E_RABs_Admitted_ToBeAdded_ItemIEs__value_PR_E_RABs_Admitted_ToBeAdded_Item;
    	  e_RABs_Admitted_ToBeAdded_Item = &e_RABS_Admitted_ToBeAdded_ItemIEs->value.choice.E_RABs_Admitted_ToBeAdded_Item;
    	  {
    		  e_RABs_Admitted_ToBeAdded_Item->choice.split_Bearer.e_RAB_ID = x2ap_addition_req_ack->e_split_rabs_tobeadded[i].e_rab_id;
    		  INT32_TO_OCTET_STRING(x2ap_addition_req_ack->e_split_rabs_tobeadded[i].gtp_teid, &e_RABs_Admitted_ToBeAdded_Item->choice.split_Bearer.seNB_GTPtunnelEndpoint.gTP_TEID);

    		  e_RABs_Admitted_ToBeAdded_Item->choice.split_Bearer.seNB_GTPtunnelEndpoint.transportLayerAddress.size 		= (uint8_t)(x2ap_addition_req_ack->e_split_rabs_tobeadded[i].eNB_addr.length/8);
    		  e_RABs_Admitted_ToBeAdded_Item->choice.split_Bearer.seNB_GTPtunnelEndpoint.transportLayerAddress.bits_unused = x2ap_addition_req_ack->e_split_rabs_tobeadded[i].eNB_addr.length%8;
    		  e_RABs_Admitted_ToBeAdded_Item->choice.split_Bearer.seNB_GTPtunnelEndpoint.transportLayerAddress.buf =
    				  calloc(1,e_RABs_Admitted_ToBeAdded_Item->choice.split_Bearer.seNB_GTPtunnelEndpoint.transportLayerAddress.size);

    		  memcpy (e_RABs_Admitted_ToBeAdded_Item->choice.split_Bearer.seNB_GTPtunnelEndpoint.transportLayerAddress.buf,
    				  x2ap_addition_req_ack->e_split_rabs_tobeadded[i].eNB_addr.buffer,
    				  e_RABs_Admitted_ToBeAdded_Item->choice.split_Bearer.seNB_GTPtunnelEndpoint.transportLayerAddress.size);

    		  }
    	  ASN_SEQUENCE_ADD(&ie->value.choice.E_RABs_Admitted_ToBeAdded_List.list, e_RABS_Admitted_ToBeAdded_ItemIEs);
      }

  }

  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  /* mandatory */
  ie = (X2AP_SeNBAdditionRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_SeNBAdditionRequestAcknowledge_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_SeNBtoMeNBContainer;
  ie->criticality = X2AP_Criticality_reject;
  ie->value.present = X2AP_SeNBAdditionRequestAcknowledge_IEs__value_PR_SeNBtoMeNBContainer;

  OCTET_STRING_fromBuf(&ie->value.choice.SeNBtoMeNBContainer, (char*) x2ap_addition_req_ack->rrc_buffer, x2ap_addition_req_ack->rrc_buffer_size);

  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
    X2AP_ERROR("Failed to encode SeNB addition response\n");
    abort();
    return -1;
  }

  x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 1);

  return ret;
}
1228

1229 1230
/*setup request message from a gNB to an eNB*/
int x2ap_gNB_generate_ENDC_x2_setup_request(
1231 1232 1233 1234 1235
  x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p)
{
  X2AP_X2AP_PDU_t                     	 pdu;
  X2AP_ENDCX2SetupRequest_t              *out;
  X2AP_ENDCX2SetupRequest_IEs_t          *ie;
1236
  X2AP_En_gNB_ENDCX2SetupReqIEs_t 			 *ie_GNB_ENDC;
1237
  X2AP_PLMN_Identity_t               	 *plmn;
1238 1239
  ServedNRcellsENDCX2ManagementList__Member                *servedCellMember;
  X2AP_SupportedSULFreqBandItem_t *SULFreqBandItem;
1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260

  uint8_t  *buffer;
  uint32_t  len;
  int       ret = 0;

  DevAssert(instance_p != NULL);
  DevAssert(x2ap_eNB_data_p != NULL);

  x2ap_eNB_data_p->state = X2AP_ENB_STATE_WAITING;

  /* Prepare the X2AP message to encode */
  memset(&pdu, 0, sizeof(pdu));
  pdu.present = X2AP_X2AP_PDU_PR_initiatingMessage;
  pdu.choice.initiatingMessage.procedureCode = X2AP_ProcedureCode_id_endcX2Setup;
  pdu.choice.initiatingMessage.criticality = X2AP_Criticality_reject;
  pdu.choice.initiatingMessage.value.present = X2AP_InitiatingMessage__value_PR_ENDCX2SetupRequest;
  out = &pdu.choice.initiatingMessage.value.choice.ENDCX2SetupRequest;

  ie = (X2AP_ENDCX2SetupRequest_IEs_t *)calloc(1, sizeof(X2AP_ENDCX2SetupRequest_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_InitiatingNodeType_EndcX2Setup;
  ie->value.present = X2AP_ENDCX2SetupRequest_IEs__value_PR_InitiatingNodeType_EndcX2Setup;
1261
  ie->value.choice.InitiatingNodeType_EndcX2Setup.present = X2AP_InitiatingNodeType_EndcX2Setup_PR_init_en_gNB;
1262

1263 1264 1265 1266 1267 1268 1269
  ie_GNB_ENDC = (X2AP_En_gNB_ENDCX2SetupReqIEs_t *)calloc(1, sizeof(X2AP_En_gNB_ENDCX2SetupReqIEs_t));
  ie_GNB_ENDC->id = X2AP_ProtocolIE_ID_id_Globalen_gNB_ID;
  ie_GNB_ENDC->criticality = X2AP_Criticality_reject;
  ie_GNB_ENDC->value.present = X2AP_En_gNB_ENDCX2SetupReqAckIEs__value_PR_GlobalGNB_ID;
  ie_GNB_ENDC->value.choice.GlobalGNB_ID.gNB_ID.present = X2AP_GNB_ID_PR_gNB_ID;
  INT32_TO_OCTET_STRING(instance_p->eNB_id,
                               &ie_GNB_ENDC->value.choice.GlobalGNB_ID.gNB_ID.choice.gNB_ID);
1270

1271 1272 1273 1274
X2AP_INFO("%d -> %02x%02x%02x\n", instance_p->eNB_id,
		  ie_GNB_ENDC->value.choice.GlobalGNB_ID.gNB_ID.choice.gNB_ID.buf[0],
		  ie_GNB_ENDC->value.choice.GlobalGNB_ID.gNB_ID.choice.gNB_ID.buf[1],
		  ie_GNB_ENDC->value.choice.GlobalGNB_ID.gNB_ID.choice.gNB_ID.buf[2]);
1275

1276 1277 1278 1279 1280 1281 1282 1283 1284
MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
                      &ie_GNB_ENDC->value.choice.GlobalGNB_ID.pLMN_Identity);

  ASN_SEQUENCE_ADD(&ie->value.choice.InitiatingNodeType_EndcX2Setup.choice.init_en_gNB.list, ie_GNB_ENDC);

  ie_GNB_ENDC = (X2AP_En_gNB_ENDCX2SetupReqIEs_t *)calloc(1, sizeof(X2AP_En_gNB_ENDCX2SetupReqIEs_t));
  ie_GNB_ENDC->id = X2AP_ProtocolIE_ID_id_ServedNRcellsENDCX2ManagementList;
  ie_GNB_ENDC->criticality = X2AP_Criticality_reject;
  ie_GNB_ENDC->value.present = X2AP_En_gNB_ENDCX2SetupReqIEs__value_PR_ServedNRcellsENDCX2ManagementList;
1285 1286 1287

  {
      for (int i = 0; i<instance_p->num_cc; i++){
1288
        servedCellMember = (ServedNRcellsENDCX2ManagementList__Member *)calloc(1,sizeof(ServedNRcellsENDCX2ManagementList__Member));
1289
        {
1290
          servedCellMember->servedNRCellInfo.nrpCI = instance_p->Nid_cell[i];
1291 1292

          MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304
                        &servedCellMember->servedNRCellInfo.nrCellID.pLMN_Identity);
          NR_CELL_ID_TO_BIT_STRING(instance_p->eNB_id,
                                     &servedCellMember->servedNRCellInfo.nrCellID.nRcellIdentifier);
          servedCellMember->servedNRCellInfo.fiveGS_TAC = calloc(1, sizeof(X2AP_FiveGS_TAC_t));
          if (servedCellMember->servedNRCellInfo.fiveGS_TAC == NULL)
            exit(1);
          NR_FIVEGS_TAC_ID_TO_BIT_STRING(instance_p->tac, servedCellMember->servedNRCellInfo.fiveGS_TAC);

          X2AP_INFO("TAC: %d -> %02x%02x%02x\n", instance_p->tac,
        		  	  servedCellMember->servedNRCellInfo.fiveGS_TAC->buf[0],
					  servedCellMember->servedNRCellInfo.fiveGS_TAC->buf[1],
					  servedCellMember->servedNRCellInfo.fiveGS_TAC->buf[2]);
1305 1306 1307 1308

          plmn = (X2AP_PLMN_Identity_t *)calloc(1,sizeof(X2AP_PLMN_Identity_t));
          {
            MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length, plmn);
1309
            ASN_SEQUENCE_ADD(&servedCellMember->servedNRCellInfo.broadcastPLMNs.list, plmn);
1310 1311
          }

1312
  	if (instance_p->frame_type[i] == TDD) {
1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326
            X2AP_FreqBandNrItem_t *freq_band;
            servedCellMember->servedNRCellInfo.nrModeInfo.present = X2AP_ServedNRCell_Information__nrModeInfo_PR_tdd;
            servedCellMember->servedNRCellInfo.nrModeInfo.choice.tdd.nRFreqInfo.nRARFCN = 0; //instance_p->tdd_nRARFCN[i];
            /* addition of Frequency Band List */
            freq_band = calloc(1, sizeof(X2AP_FreqBandNrItem_t));
            if (freq_band == NULL)
               exit(1);
            freq_band->freqBandIndicatorNr = 1; /* TODO: put correct value */

            SULFreqBandItem = calloc(1, sizeof(X2AP_SupportedSULFreqBandItem_t));
            SULFreqBandItem->freqBandIndicatorNr=80; /* TODO: put correct value */
            ASN_SEQUENCE_ADD(&freq_band->supportedSULBandList.list, SULFreqBandItem);

            ASN_SEQUENCE_ADD(&servedCellMember->servedNRCellInfo.nrModeInfo.choice.tdd.nRFreqInfo.freqBandListNr, freq_band);
1327
            switch (instance_p->N_RB_DL[i]) {
1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346
        	case 50:
			//This is not correct. Just to be able to test X2 only using an eNB instead of gNB
                	servedCellMember->servedNRCellInfo.nrModeInfo.choice.tdd.nR_TxBW.nRNRB = X2AP_NRNRB_nrb51;
			break;
		case 93 :
			servedCellMember->servedNRCellInfo.nrModeInfo.choice.tdd.nR_TxBW.nRNRB = X2AP_NRNRB_nrb93;
			break;
		case 106:
			servedCellMember->servedNRCellInfo.nrModeInfo.choice.tdd.nR_TxBW.nRNRB = X2AP_NRNRB_nrb106;
			break;
		case 121:
			servedCellMember->servedNRCellInfo.nrModeInfo.choice.tdd.nR_TxBW.nRNRB = X2AP_NRNRB_nrb121;
			break;
		/*More cases to be added */
		default:
			AssertFatal(0,"Failed: Check value for N_RB_DL/N_RB_UL");
			break;
		}
	}
1347
          else {
1348
            AssertFatal(0,"ENDC_X2Setuprequest not supported for FDD!");
1349
          }
1350 1351
  	/*Don't know where to extract the value of measurementTimingConfiguration from. Set it to 0 for now */
  	INT8_TO_OCTET_STRING(0, &servedCellMember->servedNRCellInfo.measurementTimingConfiguration);
1352
        }
1353
        ASN_SEQUENCE_ADD(&ie_GNB_ENDC->value.choice.ServedNRcellsENDCX2ManagementList.list, servedCellMember);
1354 1355
      }
    }
1356
  ASN_SEQUENCE_ADD(&ie->value.choice.InitiatingNodeType_EndcX2Setup.choice.init_en_gNB.list, ie_GNB_ENDC);
1357 1358 1359 1360 1361


  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
1362
    X2AP_ERROR("Failed to encode ENDC X2 setup request\n");
1363 1364 1365 1366 1367 1368 1369 1370 1371
    return -1;
  }

  MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB, MSC_X2AP_TARGET_ENB, NULL, 0, "0 X2Setup/initiatingMessage assoc_id %u", x2ap_eNB_data_p->assoc_id);

  x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 0);

  return ret;
}
1372

1373
int x2ap_eNB_generate_ENDC_x2_setup_response(
1374 1375 1376 1377 1378
  x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p)
{
  X2AP_X2AP_PDU_t                     	 pdu;
  X2AP_ENDCX2SetupResponse_t              *out;
  X2AP_ENDCX2SetupResponse_IEs_t          *ie;
1379
  X2AP_ENB_ENDCX2SetupReqAckIEs_t 			 *ie_ENB_ENDC;
1380
  X2AP_PLMN_Identity_t               	 *plmn;
1381
  ServedEUTRAcellsENDCX2ManagementList__Member                *servedCellMember;
1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393

  uint8_t  *buffer;
  uint32_t  len;
  int       ret = 0;

  DevAssert(instance_p != NULL);
  DevAssert(x2ap_eNB_data_p != NULL);

  x2ap_eNB_data_p->state = X2AP_ENB_STATE_WAITING;

  /* Prepare the X2AP message to encode */
  memset(&pdu, 0, sizeof(pdu));
1394
  pdu.present = X2AP_X2AP_PDU_PR_successfulOutcome;
1395 1396 1397 1398 1399 1400 1401 1402
  pdu.choice.successfulOutcome.procedureCode = X2AP_ProcedureCode_id_endcX2Setup;
  pdu.choice.successfulOutcome.criticality = X2AP_Criticality_reject;
  pdu.choice.successfulOutcome.value.present = X2AP_SuccessfulOutcome__value_PR_ENDCX2SetupResponse;
  out = &pdu.choice.successfulOutcome.value.choice.ENDCX2SetupResponse;

  ie = (X2AP_ENDCX2SetupResponse_IEs_t *)calloc(1, sizeof(X2AP_ENDCX2SetupResponse_IEs_t));
  ie->id = X2AP_ProtocolIE_ID_id_RespondingNodeType_EndcX2Setup;
  ie->value.present = X2AP_ENDCX2SetupResponse_IEs__value_PR_RespondingNodeType_EndcX2Setup;
1403
  ie->value.choice.RespondingNodeType_EndcX2Setup.present = X2AP_RespondingNodeType_EndcX2Setup_PR_respond_eNB;
1404

1405 1406 1407 1408 1409 1410 1411
  ie_ENB_ENDC = (X2AP_ENB_ENDCX2SetupReqAckIEs_t *)calloc(1, sizeof(X2AP_ENB_ENDCX2SetupReqAckIEs_t));
  ie_ENB_ENDC->id = X2AP_ProtocolIE_ID_id_GlobalENB_ID;
  ie_ENB_ENDC->criticality = X2AP_Criticality_reject;
  ie_ENB_ENDC->value.present = X2AP_ENB_ENDCX2SetupReqAckIEs__value_PR_GlobalENB_ID;
  ie_ENB_ENDC->value.choice.GlobalENB_ID.eNB_ID.present = X2AP_ENB_ID_PR_macro_eNB_ID;
  MACRO_ENB_ID_TO_BIT_STRING(instance_p->eNB_id,
                               &ie_ENB_ENDC->value.choice.GlobalENB_ID.eNB_ID.choice.macro_eNB_ID);
1412
  MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
1413
                      &ie_ENB_ENDC->value.choice.GlobalENB_ID.pLMN_Identity);
1414

1415
  ASN_SEQUENCE_ADD(&ie->value.choice.RespondingNodeType_EndcX2Setup.choice.respond_eNB.list, ie_ENB_ENDC);
1416

1417 1418 1419 1420
  ie_ENB_ENDC = (X2AP_ENB_ENDCX2SetupReqAckIEs_t *)calloc(1, sizeof(X2AP_ENB_ENDCX2SetupReqAckIEs_t));
  ie_ENB_ENDC->id = X2AP_ProtocolIE_ID_id_ServedEUTRAcellsENDCX2ManagementList;
  ie_ENB_ENDC->criticality = X2AP_Criticality_reject;
  ie_ENB_ENDC->value.present = X2AP_ENB_ENDCX2SetupReqAckIEs__value_PR_ServedEUTRAcellsENDCX2ManagementList;
1421 1422 1423

  {
      for (int i = 0; i<instance_p->num_cc; i++){
1424
        servedCellMember = (ServedEUTRAcellsENDCX2ManagementList__Member *)calloc(1,sizeof(ServedEUTRAcellsENDCX2ManagementList__Member));
1425
        {
1426
          servedCellMember->servedEUTRACellInfo.pCI = instance_p->Nid_cell[i];
1427 1428

          MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length,
1429 1430 1431
                        &servedCellMember->servedEUTRACellInfo.cellId.pLMN_Identity);
          MACRO_ENB_ID_TO_CELL_IDENTITY(instance_p->eNB_id,0,
                                     &servedCellMember->servedEUTRACellInfo.cellId.eUTRANcellIdentifier);
1432

1433
          INT16_TO_OCTET_STRING(instance_p->tac, &servedCellMember->servedEUTRACellInfo.tAC);
1434 1435 1436
          plmn = (X2AP_PLMN_Identity_t *)calloc(1,sizeof(X2AP_PLMN_Identity_t));
          {
            MCC_MNC_TO_PLMNID(instance_p->mcc, instance_p->mnc, instance_p->mnc_digit_length, plmn);
1437
            ASN_SEQUENCE_ADD(&servedCellMember->servedEUTRACellInfo.broadcastPLMNs.list, plmn);
1438 1439
          }

1440 1441 1442 1443
          if (instance_p->frame_type[i] == FDD) {
                  servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.present = X2AP_EUTRA_Mode_Info_PR_fDD;
            servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.dL_EARFCN = instance_p->fdd_earfcn_DL[i];
            servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.uL_EARFCN = instance_p->fdd_earfcn_UL[i];
1444
        	  switch (instance_p->N_RB_DL[i]) {
1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472
              case 6:
                servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw6;
                servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw6;
                break;
              case 15:
                servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw15;
                servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw15;
                break;
              case 25:
                servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw25;
                servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw25;
                break;
              case 50:
                servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw50;
                servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw50;
                break;
              case 75:
                servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw75;
                servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw75;
                break;
              case 100:
                servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.uL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw100;
                servedCellMember->servedEUTRACellInfo.eUTRA_Mode_Info.choice.fDD.dL_Transmission_Bandwidth = X2AP_Transmission_Bandwidth_bw100;
                break;
              default:
                AssertFatal(0,"Failed: Check value for N_RB_DL/N_RB_UL");
                break;
            }
1473 1474
          }
          else {
1475
        	  AssertFatal(0,"X2Setupresponse not supported for TDD!");
1476 1477
          }
        }
1478
        ASN_SEQUENCE_ADD(&ie_ENB_ENDC->value.choice.ServedEUTRAcellsENDCX2ManagementList.list, servedCellMember);
1479 1480
      }
    }
1481
  ASN_SEQUENCE_ADD(&ie->value.choice.RespondingNodeType_EndcX2Setup.choice.respond_eNB.list, ie_ENB_ENDC);
1482 1483 1484 1485 1486


  ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

  if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
1487
    X2AP_ERROR("Failed to encode ENDC X2 setup response\n");
1488 1489 1490 1491 1492 1493 1494 1495 1496 1497
    return -1;
  }

  MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB, MSC_X2AP_TARGET_ENB, NULL, 0, "0 X2Setup/initiatingMessage assoc_id %u", x2ap_eNB_data_p->assoc_id);

  x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 0);

  return ret;
}

1498
int x2ap_eNB_generate_ENDC_x2_SgNB_addition_request(
1499
  x2ap_eNB_instance_t *instance_p, x2ap_ENDC_sgnb_addition_req_t *x2ap_ENDC_sgnb_addition_req, x2ap_eNB_data_t *x2ap_eNB_data_p, int ue_id)
1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515
{
	X2AP_X2AP_PDU_t                     	 pdu;
	X2AP_SgNBAdditionRequest_t               *out;
	X2AP_SgNBAdditionRequest_IEs_t           *ie;
	X2AP_E_RABs_ToBeAdded_SgNBAddReq_ItemIEs_t 		*e_RABS_ToBeAdded_SgNBAddReq_ItemIEs;
	X2AP_E_RABs_ToBeAdded_SgNBAddReq_Item_t         *e_RABS_ToBeAdded_SgNBAddReq_Item;

	uint8_t  *buffer;
	uint32_t  len;
	int       ret = 0;

	// Currently hardcoded (dummy) values filling the fields of SgNB_addition_request message. To be substituted
	// with values coming from RRC.
	uint16_t nRencryptionAlgorithms = 0;
	uint16_t nRintegrityProtectionAlgorithms = 0;
	uint8_t  SgNBSecurityKey[32] = { 0 };
1516 1517
	int uEaggregateMaximumBitRateDownlink = 100000000;
	int uEaggregateMaximumBitRateUplink = 100000000;
1518 1519
	int e_rabs_tobeadded = 1;
	long int pDCPatSgNB = X2AP_EN_DC_ResourceConfiguration__pDCPatSgNB_present;
1520 1521 1522
	long int mCGresources = X2AP_EN_DC_ResourceConfiguration__mCGresources_not_present;
	long int sCGresources = X2AP_EN_DC_ResourceConfiguration__sCGresources_not_present;
	long qCI = 1;
1523 1524
	X2AP_Pre_emptionCapability_t pre_emptionCapability = X2AP_Pre_emptionCapability_shall_not_trigger_pre_emption;
	X2AP_Pre_emptionVulnerability_t pre_emptionVulnerability = X2AP_Pre_emptionVulnerability_not_pre_emptable;
1525
	priority_level_t priority_level = PRIORITY_LEVEL_NO_PRIORITY;
1526
	e_rab_tobe_added_t e_MCG_rabs_tobeadded;
1527
	e_MCG_rabs_tobeadded.gtp_teid = 0;
1528
	e_MCG_rabs_tobeadded.sgw_addr.length = 24;
1529
	uint8_t buf[20] = { 0 };
1530
	memcpy(e_MCG_rabs_tobeadded.sgw_addr.buffer, buf, 20*sizeof(uint8_t));
1531 1532

	FILE *fd;
1533
	fd = fopen("../../../executables/uecap.raw","r");
1534 1535 1536 1537 1538
	if (fd != NULL) {
		OCTET_STRING_t CG_Config_Info;
		CG_Config_Info.size = 4096;
		CG_Config_Info.buf = (uint8_t *)calloc(4096, sizeof(uint8_t));
		int msg_len=fread(CG_Config_Info.buf,1,CG_Config_Info.size,fd);
1539
		CG_Config_Info.size = msg_len;
1540 1541 1542 1543 1544 1545 1546

		/*char buffer[4096];
		int msg_len=fread(buffer,1,4096,fd);*/
		LOG_I(RRC,"Read in %d bytes for uecap\n",msg_len);


	/*OCTET_STRING_t CG_Config_Info;
1547
	CG_Config_Info.size = 4096;
1548
	CG_Config_Info.buf = (uint8_t *)calloc(4096, sizeof(uint8_t));*/
1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560


	DevAssert(instance_p != NULL);
	DevAssert(x2ap_eNB_data_p != NULL);

	x2ap_eNB_data_p->state = X2AP_ENB_STATE_WAITING;



	/* Prepare the X2AP message to encode */
	memset(&pdu, 0, sizeof(pdu));
	pdu.present = X2AP_X2AP_PDU_PR_initiatingMessage;
1561 1562 1563
	pdu.choice.initiatingMessage.procedureCode = X2AP_ProcedureCode_id_sgNBAdditionPreparation;
	pdu.choice.initiatingMessage.criticality = X2AP_Criticality_reject;
	pdu.choice.initiatingMessage.value.present = X2AP_InitiatingMessage__value_PR_SgNBAdditionRequest;
1564 1565 1566 1567 1568 1569
	out = &pdu.choice.initiatingMessage.value.choice.SgNBAdditionRequest;

	ie = (X2AP_SgNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequest_IEs_t));
	ie->id = X2AP_ProtocolIE_ID_id_MeNB_UE_X2AP_ID; //Not sure about that
	ie->criticality= X2AP_Criticality_reject;
	ie->value.present = X2AP_SgNBAdditionRequest_IEs__value_PR_UE_X2AP_ID;
1570
	ie->value.choice.UE_X2AP_ID = x2ap_id_get_id_source(&instance_p->id_manager, ue_id);
1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591
	ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

	ie = (X2AP_SgNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequest_IEs_t));
	ie->id = X2AP_ProtocolIE_ID_id_NRUESecurityCapabilities;
	ie->criticality = X2AP_Criticality_reject;
	ie->value.present = X2AP_SgNBAdditionRequest_IEs__value_PR_NRUESecurityCapabilities;
	INT16_TO_BIT_STRING(nRencryptionAlgorithms, &ie->value.choice.NRUESecurityCapabilities.nRencryptionAlgorithms);
	INT16_TO_BIT_STRING(nRintegrityProtectionAlgorithms, &ie->value.choice.NRUESecurityCapabilities.nRintegrityProtectionAlgorithms);
	ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

	ie = (X2AP_SgNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequest_IEs_t));
	ie->id = X2AP_ProtocolIE_ID_id_SgNBSecurityKey;
	ie->criticality = X2AP_Criticality_reject;
	ie->value.present = X2AP_SgNBAdditionRequest_IEs__value_PR_SgNBSecurityKey;
	KENB_STAR_TO_BIT_STRING(SgNBSecurityKey, &ie->value.choice.SgNBSecurityKey);
	ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

	ie = (X2AP_SgNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequest_IEs_t));
	ie->id = X2AP_ProtocolIE_ID_id_SgNBUEAggregateMaximumBitRate;
	ie->criticality = X2AP_Criticality_reject;
	ie->value.present = X2AP_SgNBAdditionRequest_IEs__value_PR_UEAggregateMaximumBitRate;
1592 1593
	ie->value.choice.UEAggregateMaximumBitRate.uEaggregateMaximumBitRateDownlink.buf = (uint8_t *)calloc(4, sizeof(uint8_t));
	INT32_TO_BUFFER(uEaggregateMaximumBitRateDownlink, ie->value.choice.UEAggregateMaximumBitRate.uEaggregateMaximumBitRateDownlink.buf);
1594 1595
	ie->value.choice.UEAggregateMaximumBitRate.uEaggregateMaximumBitRateDownlink.size = 4;

1596 1597
	ie->value.choice.UEAggregateMaximumBitRate.uEaggregateMaximumBitRateUplink.buf = (uint8_t *)calloc(4, sizeof(uint8_t));
	INT32_TO_BUFFER(uEaggregateMaximumBitRateUplink, ie->value.choice.UEAggregateMaximumBitRate.uEaggregateMaximumBitRateUplink.buf);
1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609
	ie->value.choice.UEAggregateMaximumBitRate.uEaggregateMaximumBitRateUplink.size = 4;

	ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

	ie = (X2AP_SgNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequest_IEs_t));
	//Not sure if id should be X2AP_ProtocolIE_ID_id_E_RABs_ToBeAdded_List or X2AP_ProtocolIE_ID_id_E_RABs_ToBeAdded_SgNBAddReqList
	ie->id = X2AP_ProtocolIE_ID_id_E_RABs_ToBeAdded_SgNBAddReqList;
	ie->criticality = X2AP_Criticality_reject;
	ie->value.present = X2AP_SgNBAdditionRequest_IEs__value_PR_E_RABs_ToBeAdded_SgNBAddReqList;

    for (int i=0;i<e_rabs_tobeadded;i++) {
    	e_RABS_ToBeAdded_SgNBAddReq_ItemIEs = (X2AP_E_RABs_ToBeAdded_SgNBAddReq_ItemIEs_t *)calloc(1,sizeof(X2AP_E_RABs_ToBeAdded_SgNBAddReq_ItemIEs_t));
1610
    	e_RABS_ToBeAdded_SgNBAddReq_ItemIEs->id = X2AP_ProtocolIE_ID_id_E_RABs_ToBeAdded_SgNBAddReq_Item;
1611
    	e_RABS_ToBeAdded_SgNBAddReq_ItemIEs->criticality = X2AP_Criticality_ignore;
1612
    	e_RABS_ToBeAdded_SgNBAddReq_ItemIEs->value.present = X2AP_E_RABs_ToBeAdded_SgNBAddReq_ItemIEs__value_PR_E_RABs_ToBeAdded_SgNBAddReq_Item;
1613 1614
    	e_RABS_ToBeAdded_SgNBAddReq_Item = &e_RABS_ToBeAdded_SgNBAddReq_ItemIEs->value.choice.E_RABs_ToBeAdded_SgNBAddReq_Item;
      {
1615 1616
    	e_RABS_ToBeAdded_SgNBAddReq_Item->drb_ID = x2ap_ENDC_sgnb_addition_req->e_rabs_tobeadded[i].drb_ID;
    	e_RABS_ToBeAdded_SgNBAddReq_Item->e_RAB_ID = x2ap_ENDC_sgnb_addition_req->e_rabs_tobeadded[i].e_rab_id;
1617 1618 1619 1620
    	e_RABS_ToBeAdded_SgNBAddReq_Item->en_DC_ResourceConfiguration.pDCPatSgNB = pDCPatSgNB;
    	e_RABS_ToBeAdded_SgNBAddReq_Item->en_DC_ResourceConfiguration.mCGresources = mCGresources;
    	e_RABS_ToBeAdded_SgNBAddReq_Item->en_DC_ResourceConfiguration.sCGresources = sCGresources;
    	if (pDCPatSgNB == X2AP_EN_DC_ResourceConfiguration__pDCPatSgNB_present){
1621 1622
    		e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.present = X2AP_E_RABs_ToBeAdded_SgNBAddReq_Item__resource_configuration_PR_sgNBPDCPpresent;

1623 1624
    		e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.full_E_RAB_Level_QoS_Parameters.qCI = qCI;
    		e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.full_E_RAB_Level_QoS_Parameters.allocationAndRetentionPriority.pre_emptionCapability = pre_emptionCapability;
1625 1626
    		e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.full_E_RAB_Level_QoS_Parameters.allocationAndRetentionPriority. pre_emptionVulnerability = pre_emptionVulnerability;
    		e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.full_E_RAB_Level_QoS_Parameters.allocationAndRetentionPriority.priorityLevel = priority_level;
1627 1628

    		//Continue from filling the UL_GTPtunnelEndpointInformation inspired from how it is done for the HO case
1629 1630 1631
    		INT32_TO_OCTET_STRING(x2ap_ENDC_sgnb_addition_req->e_rabs_tobeadded[i].gtp_teid, &e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.gTP_TEID);
    		e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.transportLayerAddress.size = x2ap_ENDC_sgnb_addition_req->e_rabs_tobeadded[i].sgw_addr.length/8;
    		e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.transportLayerAddress.bits_unused = x2ap_ENDC_sgnb_addition_req->e_rabs_tobeadded[i].sgw_addr.length%8;
1632 1633 1634 1635
    		e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.transportLayerAddress.buf =
    				calloc(1, e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.transportLayerAddress.size);

    		memcpy (e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.transportLayerAddress.buf,
1636
    				x2ap_ENDC_sgnb_addition_req->e_rabs_tobeadded[i].sgw_addr.buffer,
1637 1638 1639 1640 1641 1642
    				e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.transportLayerAddress.size);
    	}

      }
      ASN_SEQUENCE_ADD(&ie->value.choice.E_RABs_ToBeAdded_SgNBAddReqList.list, e_RABS_ToBeAdded_SgNBAddReq_ItemIEs);
    }
1643
    ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
1644 1645

    ie = (X2AP_SgNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequest_IEs_t));
1646 1647 1648
    ie->id = X2AP_ProtocolIE_ID_id_MeNBtoSgNBContainer;
    ie->criticality = X2AP_Criticality_reject;
    ie->value.present = X2AP_SgNBAdditionRequest_IEs__value_PR_MeNBtoSgNBContainer;
1649
    ie->value.choice.MeNBtoSgNBContainer.buf = (uint8_t *)calloc(CG_Config_Info.size, sizeof(uint8_t));
1650
    memcpy(ie->value.choice.MeNBtoSgNBContainer.buf, CG_Config_Info.buf, CG_Config_Info.size);
1651
    ie->value.choice.MeNBtoSgNBContainer.size = CG_Config_Info.size; //4096;
1652 1653 1654
    ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

    if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
1655
        X2AP_ERROR("Failed to encode ENDC X2 SgNB_addition request message\n");
1656 1657 1658 1659 1660 1661
        return -1;
    }

    MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB, MSC_X2AP_TARGET_ENB, NULL, 0, "0 X2Setup/initiatingMessage assoc_id %u", x2ap_eNB_data_p->assoc_id);

    x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 0);
1662 1663 1664 1665 1666 1667
	fclose(fd);
	}
	else {
		LOG_I(RRC, "uecap.raw file could not be opened... \n");
		return -1;
	}
1668 1669 1670 1671 1672 1673

	return ret;

}


1674
int x2ap_gNB_generate_ENDC_x2_SgNB_addition_request_ACK( x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p,
1675 1676 1677
		x2ap_ENDC_sgnb_addition_req_ACK_t *x2ap_sgnb_addition_req_ACK, int ue_id)
{
        
1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742
		X2AP_X2AP_PDU_t                     	 			pdu;
		X2AP_SgNBAdditionRequestAcknowledge_t               *out;
		X2AP_SgNBAdditionRequestAcknowledge_IEs_t           *ie;
		X2AP_E_RABs_Admitted_ToBeAdded_SgNBAddReqAck_ItemIEs_t 			*e_RABS_AdmittedToBeAdded_SgNBAddReq_ItemIEs;
		X2AP_E_RABs_Admitted_ToBeAdded_SgNBAddReqAck_Item_t         	*e_RABS_AdmittedToBeAdded_SgNBAddReq_Item;

		uint8_t  *buffer;
		uint32_t  len;
		int       ret = 0;
		int MeNB_UE_X2AP_id = ue_id;
		int SgNB_UE_X2AP_id = 0;

		// Currently hardcoded (dummy) values filling the fields of SgNB_addition_request message. To be substituted
		// with values coming from RRC.
		int e_rabs_admitted_tobeadded = 1;
		long int pDCPatSgNB = X2AP_EN_DC_ResourceConfiguration__pDCPatSgNB_present;
		long int mCGresources = X2AP_EN_DC_ResourceConfiguration__mCGresources_not_present;
		long int sCGresources = X2AP_EN_DC_ResourceConfiguration__sCGresources_not_present;
		e_rab_setup_t e_SCG_rabs_tobeadded;
		e_SCG_rabs_tobeadded.gtp_teid = 0;
		e_SCG_rabs_tobeadded.eNB_addr.length = 24;
		uint8_t buf[20] = { 0 };
		memcpy(e_SCG_rabs_tobeadded.eNB_addr.buffer, buf, 20*sizeof(uint8_t));

		DevAssert(instance_p != NULL);
		DevAssert(x2ap_eNB_data_p != NULL);

		x2ap_eNB_data_p->state = X2AP_ENB_STATE_WAITING;

		// Prepare the X2AP message to encode
		memset(&pdu, 0, sizeof(pdu));
		pdu.present = X2AP_X2AP_PDU_PR_successfulOutcome;
		pdu.choice.successfulOutcome.procedureCode = X2AP_ProcedureCode_id_sgNBAdditionPreparation;
		pdu.choice.successfulOutcome.criticality = X2AP_Criticality_reject;
		pdu.choice.successfulOutcome.value.present = X2AP_SuccessfulOutcome__value_PR_SgNBAdditionRequestAcknowledge;
		out = &pdu.choice.successfulOutcome.value.choice.SgNBAdditionRequestAcknowledge;

		// MeNB_UE_X2AP_id
		ie = (X2AP_SgNBAdditionRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequestAcknowledge_IEs_t));
		ie->id = X2AP_ProtocolIE_ID_id_MeNB_UE_X2AP_ID;
		ie->criticality= X2AP_Criticality_reject;
		ie->value.present = X2AP_SgNBAdditionRequestAcknowledge_IEs__value_PR_UE_X2AP_ID;
		ie->value.choice.UE_X2AP_ID = MeNB_UE_X2AP_id; //x2ap_id_get_id_source(&instance_p->id_manager, ue_id);
		ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

		// SgNB_UE_X2AP_id
		ie = (X2AP_SgNBAdditionRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequestAcknowledge_IEs_t));
		ie->id = X2AP_ProtocolIE_ID_id_SgNB_UE_X2AP_ID;
		ie->criticality= X2AP_Criticality_reject;
		ie->value.present = X2AP_SgNBAdditionRequestAcknowledge_IEs__value_PR_SgNB_UE_X2AP_ID;
		ie->value.choice.UE_X2AP_ID = SgNB_UE_X2AP_id; //x2ap_id_get_id_source(&instance_p->id_manager, ue_id);
		ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

		ie = (X2AP_SgNBAdditionRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequestAcknowledge_IEs_t));
		ie->id = X2AP_ProtocolIE_ID_id_E_RABs_Admitted_ToBeAdded_SgNBAddReqAckList;
		ie->criticality = X2AP_Criticality_ignore;
		ie->value.present = X2AP_SgNBAdditionRequestAcknowledge_IEs__value_PR_E_RABs_Admitted_ToBeAdded_SgNBAddReqAckList;

	    for (int i=0;i<e_rabs_admitted_tobeadded;i++) {
	    	e_RABS_AdmittedToBeAdded_SgNBAddReq_ItemIEs = (X2AP_E_RABs_Admitted_ToBeAdded_SgNBAddReqAck_ItemIEs_t *)calloc(1,sizeof(X2AP_E_RABs_Admitted_ToBeAdded_SgNBAddReqAck_ItemIEs_t));
	    	e_RABS_AdmittedToBeAdded_SgNBAddReq_ItemIEs->id = X2AP_ProtocolIE_ID_id_E_RABs_Admitted_ToBeAdded_SgNBAddReqAck_Item;
	    	e_RABS_AdmittedToBeAdded_SgNBAddReq_ItemIEs->criticality = X2AP_Criticality_ignore;
	    	e_RABS_AdmittedToBeAdded_SgNBAddReq_ItemIEs->value.present = X2AP_E_RABs_Admitted_ToBeAdded_SgNBAddReqAck_ItemIEs__value_PR_E_RABs_Admitted_ToBeAdded_SgNBAddReqAck_Item;
	    	e_RABS_AdmittedToBeAdded_SgNBAddReq_Item = &e_RABS_AdmittedToBeAdded_SgNBAddReq_ItemIEs->value.choice.E_RABs_Admitted_ToBeAdded_SgNBAddReqAck_Item;
	      {
1743
	    		e_RABS_AdmittedToBeAdded_SgNBAddReq_Item->e_RAB_ID = x2ap_sgnb_addition_req_ACK->e_rabs_admitted_tobeadded[i].e_rab_id;
1744 1745 1746 1747 1748 1749
	    		e_RABS_AdmittedToBeAdded_SgNBAddReq_Item->en_DC_ResourceConfiguration.pDCPatSgNB = pDCPatSgNB;
	    		e_RABS_AdmittedToBeAdded_SgNBAddReq_Item->en_DC_ResourceConfiguration.mCGresources = mCGresources;
	    		e_RABS_AdmittedToBeAdded_SgNBAddReq_Item->en_DC_ResourceConfiguration.sCGresources = sCGresources;
	    	if (pDCPatSgNB == X2AP_EN_DC_ResourceConfiguration__pDCPatSgNB_present){
	    		e_RABS_AdmittedToBeAdded_SgNBAddReq_Item->resource_configuration.present = X2AP_E_RABs_Admitted_ToBeAdded_SgNBAddReqAck_Item__resource_configuration_PR_sgNBPDCPpresent;

1750
	    		INT32_TO_OCTET_STRING(x2ap_sgnb_addition_req_ACK->e_rabs_admitted_tobeadded[i].gtp_teid, &e_RABS_AdmittedToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_DL_GTPtunnelEndpoint.gTP_TEID);
1751 1752
	    		e_RABS_AdmittedToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_DL_GTPtunnelEndpoint.transportLayerAddress.size  = x2ap_sgnb_addition_req_ACK->e_rabs_admitted_tobeadded[i].gnb_addr.length/8;
	    		e_RABS_AdmittedToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_DL_GTPtunnelEndpoint.transportLayerAddress.bits_unused = x2ap_sgnb_addition_req_ACK->e_rabs_admitted_tobeadded[i].gnb_addr.length%8; 
1753 1754 1755 1756
	    		e_RABS_AdmittedToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_DL_GTPtunnelEndpoint.transportLayerAddress.buf =
	    				calloc(1, e_RABS_AdmittedToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_DL_GTPtunnelEndpoint.transportLayerAddress.size);

	    		memcpy (e_RABS_AdmittedToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_DL_GTPtunnelEndpoint.transportLayerAddress.buf,
1757
	    				x2ap_sgnb_addition_req_ACK->e_rabs_admitted_tobeadded[i].gnb_addr.buffer,
1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784
	    				e_RABS_AdmittedToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_DL_GTPtunnelEndpoint.transportLayerAddress.size);
	    	}

	      }
	      ASN_SEQUENCE_ADD(&ie->value.choice.E_RABs_Admitted_ToBeAdded_SgNBAddReqAckList.list, e_RABS_AdmittedToBeAdded_SgNBAddReq_ItemIEs);
	    }
	    ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

	    ie = (X2AP_SgNBAdditionRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequestAcknowledge_IEs_t));
	    ie->id = X2AP_ProtocolIE_ID_id_SgNBtoMeNBContainer;
	    ie->criticality = X2AP_Criticality_reject;
	    ie->value.present = X2AP_SgNBAdditionRequestAcknowledge_IEs__value_PR_SgNBtoMeNBContainer;
	    ie->value.choice.SgNBtoMeNBContainer.buf = (uint8_t *)calloc(x2ap_sgnb_addition_req_ACK->rrc_buffer_size, sizeof(uint8_t));
	    memcpy(ie->value.choice.SgNBtoMeNBContainer.buf, x2ap_sgnb_addition_req_ACK->rrc_buffer, x2ap_sgnb_addition_req_ACK->rrc_buffer_size);
	    ie->value.choice.SgNBtoMeNBContainer.size = x2ap_sgnb_addition_req_ACK->rrc_buffer_size; //4096;
	    ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

	    if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
	        X2AP_ERROR("Failed to encode ENDC X2 SgNB_addition request message\n");
	        return -1;
	    }

	    MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB, MSC_X2AP_TARGET_ENB, NULL, 0, "0 X2Setup/initiatingMessage assoc_id %u", x2ap_eNB_data_p->assoc_id);

	    x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 0);

		return ret;
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}
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int x2ap_eNB_generate_ENDC_x2_SgNB_reconfiguration_complete(
  x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p, int ue_id, int SgNB_ue_id)
{
	X2AP_X2AP_PDU_t                     	 pdu;
	X2AP_SgNBReconfigurationComplete_t               *out;
	X2AP_SgNBReconfigurationComplete_IEs_t           *ie;

	uint8_t  *buffer;
	uint32_t  len;
	int       ret = 0;

	DevAssert(instance_p != NULL);
	DevAssert(x2ap_eNB_data_p != NULL);

	x2ap_eNB_data_p->state = X2AP_ENB_STATE_WAITING;


	/* Prepare the X2AP message to encode */
	memset(&pdu, 0, sizeof(pdu));
	pdu.present = X2AP_X2AP_PDU_PR_initiatingMessage;
	pdu.choice.initiatingMessage.procedureCode = X2AP_ProcedureCode_id_sgNBReconfigurationCompletion;
	pdu.choice.initiatingMessage.criticality = X2AP_Criticality_ignore;
	pdu.choice.initiatingMessage.value.present = X2AP_InitiatingMessage__value_PR_SgNBReconfigurationComplete;
	out = &pdu.choice.initiatingMessage.value.choice.SgNBReconfigurationComplete;

	ie = (X2AP_SgNBReconfigurationComplete_IEs_t *)calloc(1, sizeof(X2AP_SgNBReconfigurationComplete_IEs_t));
	ie->id = X2AP_ProtocolIE_ID_id_MeNB_UE_X2AP_ID;
	ie->criticality= X2AP_Criticality_reject;
	ie->value.present = X2AP_SgNBReconfigurationComplete_IEs__value_PR_UE_X2AP_ID;
	ie->value.choice.UE_X2AP_ID = ue_id; //x2ap_id_get_id_source(&instance_p->id_manager, ue_id);
	ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

	ie = (X2AP_SgNBReconfigurationComplete_IEs_t *)calloc(1, sizeof(X2AP_SgNBReconfigurationComplete_IEs_t));
	ie->id = X2AP_ProtocolIE_ID_id_SgNB_UE_X2AP_ID;
	ie->criticality = X2AP_Criticality_reject;
	ie->value.present = X2AP_SgNBReconfigurationComplete_IEs__value_PR_SgNB_UE_X2AP_ID;
	ie->value.choice.SgNB_UE_X2AP_ID = SgNB_ue_id;
	ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

	ie = (X2AP_SgNBReconfigurationComplete_IEs_t *)calloc(1, sizeof(X2AP_SgNBReconfigurationComplete_IEs_t));
	ie->id = X2AP_ProtocolIE_ID_id_ResponseInformationSgNBReconfComp;
	ie->criticality = X2AP_Criticality_ignore;
	ie->value.present = X2AP_SgNBReconfigurationComplete_IEs__value_PR_ResponseInformationSgNBReconfComp;
	ie->value.choice.ResponseInformationSgNBReconfComp.present = X2AP_ResponseInformationSgNBReconfComp_PR_success_SgNBReconfComp;
	// meNBtoSgNBContainer should contain the RRCReconfigurationComplete message from the UE but in the specs 36.423(9.1.4.4) its presence is not mandatory
	ie->value.choice.ResponseInformationSgNBReconfComp.choice.success_SgNBReconfComp.meNBtoSgNBContainer = NULL;
	ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);

    if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
        X2AP_ERROR("Failed to encode ENDC X2 SgNB_addition request message\n");
        return -1;
    }

    x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 0);

	return ret;

}