Use an un-official community collaboration version of asn1c
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.
This commit is contained in:
Bi-Ruei, Chiu
+148
-219
@@ -34,251 +34,185 @@
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#include "intertask_interface.h"
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#include "s1ap_common.h"
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#include "s1ap_ies_defs.h"
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#include "s1ap_eNB_decoder.h"
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static int s1ap_eNB_decode_initiating_message(s1ap_message *message,
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S1ap_InitiatingMessage_t *initiating_p)
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static int s1ap_eNB_decode_initiating_message(S1AP_S1AP_PDU_t *pdu)
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{
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int ret = -1;
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MessageDef *message_p;
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char *message_string = NULL;
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size_t message_string_size;
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MessagesIds message_id;
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asn_encode_to_new_buffer_result_t res = { NULL, {0, NULL, NULL} };
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DevAssert(pdu != NULL);
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DevAssert(initiating_p != NULL);
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switch(pdu->choice.initiatingMessage.procedureCode) {
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case S1AP_ProcedureCode_id_downlinkNASTransport:
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res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_S1AP_S1AP_PDU, pdu);
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message_id = S1AP_DOWNLINK_NAS_LOG;
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message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id,
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res.result.encoded + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_downlink_nas_log.size = res.result.encoded;
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memcpy(&message_p->ittiMsg.s1ap_downlink_nas_log.text, res.buffer, res.result.encoded);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(res.buffer);
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break;
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message_string = calloc(10000, sizeof(char));
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case S1AP_ProcedureCode_id_InitialContextSetup:
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res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_S1AP_S1AP_PDU, pdu);
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message_id = S1AP_INITIAL_CONTEXT_SETUP_LOG;
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message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id,
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res.result.encoded + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_initial_context_setup_log.size = res.result.encoded;
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memcpy(&message_p->ittiMsg.s1ap_initial_context_setup_log.text, res.buffer, res.result.encoded);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(res.buffer);
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break;
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s1ap_string_total_size = 0;
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case S1AP_ProcedureCode_id_UEContextRelease:
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res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_S1AP_S1AP_PDU, pdu);
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message_id = S1AP_UE_CONTEXT_RELEASE_COMMAND_LOG;
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message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id,
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res.result.encoded + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_ue_context_release_command_log.size = res.result.encoded;
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memcpy(&message_p->ittiMsg.s1ap_ue_context_release_command_log.text, res.buffer, res.result.encoded);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(res.buffer);
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break;
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message->procedureCode = initiating_p->procedureCode;
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message->criticality = initiating_p->criticality;
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case S1AP_ProcedureCode_id_Paging:
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res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_S1AP_S1AP_PDU, pdu);
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message_id = S1AP_PAGING_LOG;
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message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id,
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res.result.encoded + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_paging_log.size = res.result.encoded;
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memcpy(&message_p->ittiMsg.s1ap_paging_log.text, res.buffer, res.result.encoded);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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S1AP_INFO("Paging initiating message\n");
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free(res.buffer);
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break;
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switch(initiating_p->procedureCode) {
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case S1ap_ProcedureCode_id_downlinkNASTransport:
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ret = s1ap_decode_s1ap_downlinknastransporties(
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&message->msg.s1ap_DownlinkNASTransportIEs,
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&initiating_p->value);
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s1ap_xer_print_s1ap_downlinknastransport(s1ap_xer__print2sp,
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message_string,
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message);
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message_id = S1AP_DOWNLINK_NAS_LOG;
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message_string_size = strlen(message_string);
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message_p = itti_alloc_new_message_sized(TASK_S1AP,
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message_id,
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message_string_size + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_downlink_nas_log.size = message_string_size;
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memcpy(&message_p->ittiMsg.s1ap_downlink_nas_log.text, message_string, message_string_size);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(message_string);
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break;
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case S1AP_ProcedureCode_id_E_RABSetup:
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res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_S1AP_S1AP_PDU, pdu);
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message_id = S1AP_E_RAB_SETUP_REQUEST_LOG;
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message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id,
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res.result.encoded + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_e_rab_setup_request_log.size = res.result.encoded;
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memcpy(&message_p->ittiMsg.s1ap_e_rab_setup_request_log.text, res.buffer, res.result.encoded);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(res.buffer);
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S1AP_INFO("E_RABSetup initiating message\n");
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break;
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case S1ap_ProcedureCode_id_InitialContextSetup:
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ret = s1ap_decode_s1ap_initialcontextsetuprequesties(
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&message->msg.s1ap_InitialContextSetupRequestIEs, &initiating_p->value);
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s1ap_xer_print_s1ap_initialcontextsetuprequest(s1ap_xer__print2sp, message_string, message);
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message_id = S1AP_INITIAL_CONTEXT_SETUP_LOG;
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message_string_size = strlen(message_string);
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message_p = itti_alloc_new_message_sized(TASK_S1AP,
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message_id,
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message_string_size + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_initial_context_setup_log.size = message_string_size;
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memcpy(&message_p->ittiMsg.s1ap_initial_context_setup_log.text, message_string, message_string_size);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(message_string);
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break;
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case S1AP_ProcedureCode_id_E_RABModify:
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res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_S1AP_S1AP_PDU, pdu);
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message_id = S1AP_E_RAB_MODIFY_REQUEST_LOG;
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message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id,
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res.result.encoded + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_e_rab_modify_request_log.size = res.result.encoded;
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memcpy(&message_p->ittiMsg.s1ap_e_rab_modify_request_log.text, res.buffer, res.result.encoded);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(res.buffer);
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S1AP_INFO("E_RABModify initiating message\n");
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break;
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case S1ap_ProcedureCode_id_UEContextRelease:
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ret = s1ap_decode_s1ap_uecontextreleasecommandies(
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&message->msg.s1ap_UEContextReleaseCommandIEs, &initiating_p->value);
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s1ap_xer_print_s1ap_uecontextreleasecommand(s1ap_xer__print2sp, message_string, message);
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message_id = S1AP_UE_CONTEXT_RELEASE_COMMAND_LOG;
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message_string_size = strlen(message_string);
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message_p = itti_alloc_new_message_sized(TASK_S1AP,
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message_id,
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message_string_size + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_ue_context_release_command_log.size = message_string_size;
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memcpy(&message_p->ittiMsg.s1ap_ue_context_release_command_log.text, message_string, message_string_size);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(message_string);
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break;
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case S1AP_ProcedureCode_id_E_RABRelease:
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res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_S1AP_S1AP_PDU, pdu);
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message_id = S1AP_E_RAB_RELEASE_REQUEST_LOG;
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message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id,
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res.result.encoded + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_e_rab_release_request_log.size = res.result.encoded;
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memcpy(&message_p->ittiMsg.s1ap_e_rab_release_request_log.text, res.buffer, res.result.encoded);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(res.buffer);
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S1AP_INFO("TODO E_RABRelease initiating message\n");
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break;
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case S1ap_ProcedureCode_id_Paging:
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ret = s1ap_decode_s1ap_pagingies(
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&message->msg.s1ap_PagingIEs, &initiating_p->value);
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s1ap_xer_print_s1ap_paging(s1ap_xer__print2sp, message_string, message);
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message_id = S1AP_PAGING_LOG;
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message_string_size = strlen(message_string);
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message_p = itti_alloc_new_message_sized(TASK_S1AP,
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message_id,
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message_string_size + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_paging_log.size = message_string_size;
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memcpy(&message_p->ittiMsg.s1ap_paging_log.text, message_string, message_string_size);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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S1AP_INFO("Paging initiating message\n");
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free(message_string);
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break;
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case S1AP_ProcedureCode_id_ErrorIndication:
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res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_S1AP_S1AP_PDU, pdu);
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message_id = S1AP_ERROR_INDICATION_LOG;
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message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id,
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res.result.encoded + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_error_indication_log.size = res.result.encoded;
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memcpy(&message_p->ittiMsg.s1ap_error_indication_log.text, res.buffer, res.result.encoded);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(res.buffer);
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S1AP_INFO("TODO ErrorIndication initiating message\n");
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break;
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case S1ap_ProcedureCode_id_E_RABSetup:
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ret = s1ap_decode_s1ap_e_rabsetuprequesties(
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&message->msg.s1ap_E_RABSetupRequestIEs, &initiating_p->value);
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//s1ap_xer_print_s1ap_e_rabsetuprequest(s1ap_xer__print2sp, message_string, message);
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message_id = S1AP_E_RAB_SETUP_REQUEST_LOG;
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message_string_size = strlen(message_string);
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message_p = itti_alloc_new_message_sized(TASK_S1AP,
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message_id,
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message_string_size + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_e_rab_setup_request_log.size = message_string_size;
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memcpy(&message_p->ittiMsg.s1ap_e_rab_setup_request_log.text, message_string, message_string_size);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(message_string);
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S1AP_INFO("E_RABSetup initiating message\n");
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break;
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case S1ap_ProcedureCode_id_E_RABModify:
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ret = s1ap_decode_s1ap_e_rabmodifyrequesties(
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&message->msg.s1ap_E_RABModifyRequestIEs, &initiating_p->value);
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message_id = S1AP_E_RAB_MODIFY_REQUEST_LOG;
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message_string_size = strlen(message_string);
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message_p = itti_alloc_new_message_sized(TASK_S1AP,
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message_id,
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message_string_size + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_e_rab_modify_request_log.size = message_string_size;
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memcpy(&message_p->ittiMsg.s1ap_e_rab_modify_request_log.text, message_string, message_string_size);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(message_string);
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S1AP_INFO("E_RABModify initiating message\n");
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break;
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case S1ap_ProcedureCode_id_E_RABRelease:
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ret = s1ap_decode_s1ap_e_rabreleasecommandies(
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&message->msg.s1ap_E_RABReleaseCommandIEs, &initiating_p->value);
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s1ap_xer_print_s1ap_e_rabreleasecommand(s1ap_xer__print2sp, message_string, message);
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message_id = S1AP_E_RAB_RELEASE_REQUEST_LOG;
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message_string_size = strlen(message_string);
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message_p = itti_alloc_new_message_sized(TASK_S1AP,
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message_id,
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message_string_size + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_e_rab_release_request_log.size = message_string_size;
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memcpy(&message_p->ittiMsg.s1ap_e_rab_release_request_log.text, message_string, message_string_size);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(message_string);
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S1AP_INFO("TODO E_RABRelease nitiating message\n");
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break;
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case S1ap_ProcedureCode_id_ErrorIndication:
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ret = s1ap_decode_s1ap_errorindicationies(
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&message->msg.s1ap_ErrorIndicationIEs, &initiating_p->value);
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s1ap_xer_print_s1ap_errorindication(s1ap_xer__print2sp, message_string, message);
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message_id = S1AP_E_RAB_ERROR_INDICATION_LOG;
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message_string_size = strlen(message_string);
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message_p = itti_alloc_new_message_sized(TASK_S1AP,
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message_id,
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message_string_size + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_e_rab_release_request_log.size = message_string_size;
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memcpy(&message_p->ittiMsg.s1ap_error_indication_log.text, message_string, message_string_size);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(message_string);
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S1AP_INFO("ErrorIndication initiating message\n");
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break;
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default:
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S1AP_ERROR("Unknown procedure ID (%d) for initiating message\n",
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(int)initiating_p->procedureCode);
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AssertFatal( 0 , "Unknown procedure ID (%d) for initiating message\n",
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(int)initiating_p->procedureCode);
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return -1;
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default:
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S1AP_ERROR("Unknown procedure ID (%d) for initiating message\n",
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(int)pdu->choice.initiatingMessage.procedureCode);
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AssertFatal( 0, "Unknown procedure ID (%d) for initiating message\n",
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(int)pdu->choice.initiatingMessage.procedureCode);
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return -1;
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}
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return ret;
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return 0;
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}
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static int s1ap_eNB_decode_successful_outcome(s1ap_message *message,
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S1ap_SuccessfulOutcome_t *successfullOutcome_p)
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static int s1ap_eNB_decode_successful_outcome(S1AP_S1AP_PDU_t *pdu)
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{
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int ret = -1;
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MessageDef *message_p;
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char *message_string = NULL;
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size_t message_string_size;
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MessagesIds message_id;
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asn_encode_to_new_buffer_result_t res = { NULL, {0, NULL, NULL} };
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DevAssert(pdu != NULL);
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DevAssert(successfullOutcome_p != NULL);
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switch(pdu->choice.successfulOutcome.procedureCode) {
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case S1AP_ProcedureCode_id_S1Setup:
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res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_S1AP_S1AP_PDU, pdu);
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message_id = S1AP_S1_SETUP_LOG;
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message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id, res.result.encoded + sizeof (IttiMsgText));
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message_p->ittiMsg.s1ap_s1_setup_log.size = res.result.encoded;
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memcpy(&message_p->ittiMsg.s1ap_s1_setup_log.text, res.buffer, res.result.encoded);
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itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
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free(res.buffer);
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break;
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message_string = malloc(sizeof(char) * 10000);
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memset((void*)message_string,0,sizeof(char) * 10000);
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s1ap_string_total_size = 0;
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message->procedureCode = successfullOutcome_p->procedureCode;
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message->criticality = successfullOutcome_p->criticality;
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switch(successfullOutcome_p->procedureCode) {
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case S1ap_ProcedureCode_id_S1Setup:
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ret = s1ap_decode_s1ap_s1setupresponseies(
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&message->msg.s1ap_S1SetupResponseIEs, &successfullOutcome_p->value);
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s1ap_xer_print_s1ap_s1setupresponse(s1ap_xer__print2sp, message_string, message);
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message_id = S1AP_S1_SETUP_LOG;
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break;
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default:
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S1AP_ERROR("Unknown procedure ID (%d) for successfull outcome message\n",
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(int)successfullOutcome_p->procedureCode);
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return -1;
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default:
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S1AP_ERROR("Unknown procedure ID (%d) for successfull outcome message\n",
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(int)pdu->choice.successfulOutcome.procedureCode);
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return -1;
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}
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message_string_size = strlen(message_string);
|
||||
|
||||
message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id, message_string_size + sizeof (IttiMsgText));
|
||||
message_p->ittiMsg.s1ap_s1_setup_log.size = message_string_size;
|
||||
memcpy(&message_p->ittiMsg.s1ap_s1_setup_log.text, message_string, message_string_size);
|
||||
|
||||
itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
|
||||
|
||||
free(message_string);
|
||||
|
||||
return ret;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int s1ap_eNB_decode_unsuccessful_outcome(s1ap_message *message,
|
||||
S1ap_UnsuccessfulOutcome_t *unSuccessfullOutcome_p)
|
||||
static int s1ap_eNB_decode_unsuccessful_outcome(S1AP_S1AP_PDU_t *pdu)
|
||||
{
|
||||
int ret = -1;
|
||||
DevAssert(unSuccessfullOutcome_p != NULL);
|
||||
MessageDef *message_p;
|
||||
MessagesIds message_id;
|
||||
asn_encode_to_new_buffer_result_t res = { NULL, {0, NULL, NULL} };
|
||||
DevAssert(pdu != NULL);
|
||||
|
||||
message->procedureCode = unSuccessfullOutcome_p->procedureCode;
|
||||
message->criticality = unSuccessfullOutcome_p->criticality;
|
||||
switch(pdu->choice.unsuccessfulOutcome.procedureCode) {
|
||||
case S1AP_ProcedureCode_id_S1Setup:
|
||||
res = asn_encode_to_new_buffer(NULL, ATS_CANONICAL_XER, &asn_DEF_S1AP_S1AP_PDU, pdu);
|
||||
message_id = S1AP_S1_SETUP_LOG;
|
||||
message_p = itti_alloc_new_message_sized(TASK_S1AP, message_id, res.result.encoded + sizeof (IttiMsgText));
|
||||
message_p->ittiMsg.s1ap_s1_setup_log.size = res.result.encoded;
|
||||
memcpy(&message_p->ittiMsg.s1ap_s1_setup_log.text, res.buffer, res.result.encoded);
|
||||
itti_send_msg_to_task(TASK_UNKNOWN, INSTANCE_DEFAULT, message_p);
|
||||
free(res.buffer);
|
||||
break;
|
||||
|
||||
switch(unSuccessfullOutcome_p->procedureCode) {
|
||||
case S1ap_ProcedureCode_id_S1Setup:
|
||||
return s1ap_decode_s1ap_s1setupfailureies(
|
||||
&message->msg.s1ap_S1SetupFailureIEs, &unSuccessfullOutcome_p->value);
|
||||
|
||||
default:
|
||||
S1AP_ERROR("Unknown procedure ID (%d) for unsuccessfull outcome message\n",
|
||||
(int)unSuccessfullOutcome_p->procedureCode);
|
||||
break;
|
||||
default:
|
||||
S1AP_ERROR("Unknown procedure ID (%d) for unsuccessfull outcome message\n",
|
||||
(int)pdu->choice.unsuccessfulOutcome.procedureCode);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return ret;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int s1ap_eNB_decode_pdu(s1ap_message *message, const uint8_t * const buffer,
|
||||
int s1ap_eNB_decode_pdu(S1AP_S1AP_PDU_t *pdu, const uint8_t *const buffer,
|
||||
const uint32_t length)
|
||||
{
|
||||
S1AP_PDU_t pdu;
|
||||
S1AP_PDU_t *pdu_p = &pdu;
|
||||
asn_dec_rval_t dec_ret;
|
||||
|
||||
DevAssert(pdu != NULL);
|
||||
DevAssert(buffer != NULL);
|
||||
|
||||
memset((void *)pdu_p, 0, sizeof(S1AP_PDU_t));
|
||||
|
||||
dec_ret = aper_decode(NULL,
|
||||
&asn_DEF_S1AP_PDU,
|
||||
(void **)&pdu_p,
|
||||
&asn_DEF_S1AP_S1AP_PDU,
|
||||
(void **)&pdu,
|
||||
buffer,
|
||||
length,
|
||||
0,
|
||||
@@ -289,24 +223,19 @@ int s1ap_eNB_decode_pdu(s1ap_message *message, const uint8_t * const buffer,
|
||||
return -1;
|
||||
}
|
||||
|
||||
message->direction = pdu_p->present;
|
||||
switch(pdu->present) {
|
||||
case S1AP_S1AP_PDU_PR_initiatingMessage:
|
||||
return s1ap_eNB_decode_initiating_message(pdu);
|
||||
|
||||
switch(pdu_p->present) {
|
||||
case S1AP_PDU_PR_initiatingMessage:
|
||||
return s1ap_eNB_decode_initiating_message(message,
|
||||
&pdu_p->choice.initiatingMessage);
|
||||
case S1AP_S1AP_PDU_PR_successfulOutcome:
|
||||
return s1ap_eNB_decode_successful_outcome(pdu);
|
||||
|
||||
case S1AP_PDU_PR_successfulOutcome:
|
||||
return s1ap_eNB_decode_successful_outcome(message,
|
||||
&pdu_p->choice.successfulOutcome);
|
||||
case S1AP_S1AP_PDU_PR_unsuccessfulOutcome:
|
||||
return s1ap_eNB_decode_unsuccessful_outcome(pdu);
|
||||
|
||||
case S1AP_PDU_PR_unsuccessfulOutcome:
|
||||
return s1ap_eNB_decode_unsuccessful_outcome(message,
|
||||
&pdu_p->choice.unsuccessfulOutcome);
|
||||
|
||||
default:
|
||||
S1AP_DEBUG("Unknown presence (%d) or not implemented\n", (int)pdu_p->present);
|
||||
break;
|
||||
default:
|
||||
S1AP_DEBUG("Unknown presence (%d) or not implemented\n", (int)pdu->present);
|
||||
break;
|
||||
}
|
||||
|
||||
return -1;
|
||||
|
||||
Reference in New Issue
Block a user