• Bi-Ruei, Chiu's avatar
    Use an un-official community collaboration version of asn1c · a247907d
    Bi-Ruei, Chiu authored
    1. It's no need to modify LTE-RRC's ASN.1 file for enabling option group
       feature in generate_asn1.
    2. It's no need to patch the C header files generated from
       LTE-RRC/S1AP/X2AP's ASN.1 in fix_asn1.
    3. It's no need to pre-process S1AP/X2AP's ASN.1 for enabling information
       object class feature by asn1tostruct.py.
    
    This commit requires an un-official version of asn1c which are
    collaboration of asn1c community members and `build_helper` is modified
    in this commit accordingly :
    
      https://github.com/brchiu/asn1c/tree/velichkov_s1ap_plus_option_group
    
    This asn1c can also convert ASN.1 of 5G NR RRC (38.331, v15.1.0) and
    generate C files with -findirect-choice command line option without
    tweaking ASN.1 file.
    
    Examples for how to use this asn1c for S1AP are in S1AP files, e.g.
    s1ap_eNB_nas_procedures.c and s1ap_eNB_handler.c.
    
    There is an modified openair-cn (based on tag 0.5.0) with this new asn1c at :
    
      https://github.com/brchiu/openair-cn/tree/new-asn1c
    
    Basic S1AP interaction and data transfer operation between OAI eNB and
    this modified openair-cn has been tested.
    
    Note: Community version of asn1c is keeping evolved to provide better usage.
    a247907d
s1ap_eNB_itti_messaging.c 2.86 KB
/*
 * 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
 */

#include "intertask_interface.h"

#include "s1ap_eNB_itti_messaging.h"

void s1ap_eNB_itti_send_sctp_data_req(instance_t instance, int32_t assoc_id, uint8_t *buffer,
                                      uint32_t buffer_length, uint16_t stream)
{
  MessageDef      *message_p;
  sctp_data_req_t *sctp_data_req;

  message_p = itti_alloc_new_message(TASK_S1AP, SCTP_DATA_REQ);

  sctp_data_req = &message_p->ittiMsg.sctp_data_req;

  sctp_data_req->assoc_id      = assoc_id;
  sctp_data_req->buffer        = buffer;
  sctp_data_req->buffer_length = buffer_length;
  sctp_data_req->stream        = stream;

  itti_send_msg_to_task(TASK_SCTP, instance, message_p);
}

void s1ap_eNB_itti_send_nas_downlink_ind(instance_t instance,
    uint16_t ue_initial_id,
    uint32_t eNB_ue_s1ap_id,
    uint8_t *nas_pdu,
    uint32_t nas_pdu_length)
{
  MessageDef          *message_p;
  s1ap_downlink_nas_t *s1ap_downlink_nas;

  message_p = itti_alloc_new_message(TASK_S1AP, S1AP_DOWNLINK_NAS);

  s1ap_downlink_nas = &message_p->ittiMsg.s1ap_downlink_nas;

  s1ap_downlink_nas->ue_initial_id  = ue_initial_id;
  s1ap_downlink_nas->eNB_ue_s1ap_id = eNB_ue_s1ap_id;
  s1ap_downlink_nas->nas_pdu.buffer = malloc(sizeof(uint8_t) * nas_pdu_length);
  memcpy(s1ap_downlink_nas->nas_pdu.buffer, nas_pdu, nas_pdu_length);
  s1ap_downlink_nas->nas_pdu.length = nas_pdu_length;

  itti_send_msg_to_task(TASK_RRC_ENB, instance, message_p);
}

void s1ap_eNB_itti_send_sctp_close_association(instance_t instance, int32_t assoc_id)
{
  MessageDef               *message_p = NULL;
  sctp_close_association_t *sctp_close_association_p = NULL;

  message_p = itti_alloc_new_message(TASK_S1AP, SCTP_CLOSE_ASSOCIATION);
  sctp_close_association_p = &message_p->ittiMsg.sctp_close_association;
  sctp_close_association_p->assoc_id      = assoc_id;

  itti_send_msg_to_task(TASK_SCTP, instance, message_p);
}