Bi-Ruei, Chiu
a247907d3a
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.
154 lines
4.5 KiB
C
154 lines
4.5 KiB
C
/*
|
|
* 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
|
|
*/
|
|
|
|
/*! \file x2ap_common.c
|
|
* \brief x2ap procedures for both eNB and MME
|
|
* \author Sebastien ROUX <sebastien.roux@eurecom.fr>, Lionel GAUTHIER <Lionel.GAUTHIER@eurecom.fr>
|
|
* \date 2014
|
|
* \version 0.1
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "x2ap_common.h"
|
|
#include "X2AP_X2AP-PDU.h"
|
|
|
|
int asn_debug = 0;
|
|
int asn1_xer_print = 0;
|
|
|
|
#if defined(EMIT_ASN_DEBUG_EXTERN)
|
|
inline void ASN_DEBUG(const char *fmt, ...)
|
|
{
|
|
if (asn_debug) {
|
|
int adi = asn_debug_indent;
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
fprintf(stderr, "[ASN1]");
|
|
|
|
while(adi--) fprintf(stderr, " ");
|
|
|
|
vfprintf(stderr, fmt, ap);
|
|
fprintf(stderr, "\n");
|
|
va_end(ap);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
ssize_t x2ap_generate_initiating_message(
|
|
uint8_t **buffer,
|
|
uint32_t *length,
|
|
X2AP_ProcedureCode_t procedureCode,
|
|
X2AP_Criticality_t criticality,
|
|
asn_TYPE_descriptor_t *td,
|
|
void *sptr)
|
|
{
|
|
X2AP_X2AP_PDU_t pdu;
|
|
ssize_t encoded;
|
|
memset(&pdu, 0, sizeof(X2AP_X2AP_PDU_t));
|
|
pdu.present = X2AP_X2AP_PDU_PR_initiatingMessage;
|
|
pdu.choice.initiatingMessage.procedureCode = procedureCode;
|
|
pdu.choice.initiatingMessage.criticality = criticality;
|
|
ANY_fromType_aper(&pdu.choice.initiatingMessage.value, td, sptr);
|
|
|
|
if (asn1_xer_print) {
|
|
xer_fprint(stdout, &asn_DEF_X2AP_X2AP_PDU, (void *)&pdu);
|
|
}
|
|
|
|
/* We can safely free list of IE from sptr */
|
|
ASN_STRUCT_FREE_CONTENTS_ONLY(*td, sptr);
|
|
|
|
if ((encoded = aper_encode_to_new_buffer(&asn_DEF_X2AP_X2AP_PDU, 0, &pdu,
|
|
(void **)buffer)) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
*length = encoded;
|
|
return encoded;
|
|
}
|
|
|
|
ssize_t x2ap_generate_successfull_outcome(
|
|
uint8_t **buffer,
|
|
uint32_t *length,
|
|
X2AP_ProcedureCode_t procedureCode,
|
|
X2AP_Criticality_t criticality,
|
|
asn_TYPE_descriptor_t *td,
|
|
void *sptr)
|
|
{
|
|
X2AP_X2AP_PDU_t pdu;
|
|
ssize_t encoded;
|
|
memset(&pdu, 0, sizeof(X2AP_X2AP_PDU_t));
|
|
pdu.present = X2AP_X2AP_PDU_PR_successfulOutcome;
|
|
pdu.choice.successfulOutcome.procedureCode = procedureCode;
|
|
pdu.choice.successfulOutcome.criticality = criticality;
|
|
ANY_fromType_aper(&pdu.choice.successfulOutcome.value, td, sptr);
|
|
|
|
if (asn1_xer_print) {
|
|
xer_fprint(stdout, &asn_DEF_X2AP_X2AP_PDU, (void *)&pdu);
|
|
}
|
|
|
|
/* We can safely free list of IE from sptr */
|
|
ASN_STRUCT_FREE_CONTENTS_ONLY(*td, sptr);
|
|
|
|
if ((encoded = aper_encode_to_new_buffer(&asn_DEF_X2AP_X2AP_PDU, 0, &pdu,
|
|
(void **)buffer)) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
*length = encoded;
|
|
return encoded;
|
|
}
|
|
|
|
ssize_t x2ap_generate_unsuccessfull_outcome(
|
|
uint8_t **buffer,
|
|
uint32_t *length,
|
|
X2AP_ProcedureCode_t procedureCode,
|
|
X2AP_Criticality_t criticality,
|
|
asn_TYPE_descriptor_t *td,
|
|
void *sptr)
|
|
{
|
|
X2AP_X2AP_PDU_t pdu;
|
|
ssize_t encoded;
|
|
memset(&pdu, 0, sizeof(X2AP_X2AP_PDU_t));
|
|
pdu.present = X2AP_X2AP_PDU_PR_unsuccessfulOutcome;
|
|
pdu.choice.successfulOutcome.procedureCode = procedureCode;
|
|
pdu.choice.successfulOutcome.criticality = criticality;
|
|
ANY_fromType_aper(&pdu.choice.successfulOutcome.value, td, sptr);
|
|
|
|
if (asn1_xer_print) {
|
|
xer_fprint(stdout, &asn_DEF_X2AP_X2AP_PDU, (void *)&pdu);
|
|
}
|
|
|
|
/* We can safely free list of IE from sptr */
|
|
ASN_STRUCT_FREE_CONTENTS_ONLY(*td, sptr);
|
|
|
|
if ((encoded = aper_encode_to_new_buffer(&asn_DEF_X2AP_X2AP_PDU, 0, &pdu,
|
|
(void **)buffer)) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
*length = encoded;
|
|
return encoded;
|
|
}
|
|
|
|
void x2ap_handle_criticality(X2AP_Criticality_t criticality)
|
|
{
|
|
}
|