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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
*/
/*! \file m2ap_eNB_handler.c
* \brief m2ap handler procedures for eNB
* \author Javier Morgade <javier.morgade@ieee.org>
* \date 2019
* \version 0.1
*/
#include <stdint.h>
#include "intertask_interface.h"
#include "asn1_conversions.h"
#include "m2ap_common.h"
#include "m2ap_eNB_defs.h"
//#include "m2ap_handler.h"
#include "m2ap_decoder.h"
#include "m2ap_ids.h"
//#include "m2ap_eNB_management_procedures.h"
#include "m2ap_eNB_generate_messages.h"
#include "m2ap_MCE_interface_management.h"
#include "m2ap_eNB_interface_management.h"
#include "assertions.h"
#include "conversions.h"
/* Handlers matrix. Only eNB related procedure present here */
static const m2ap_message_decoded_callback m2ap_messages_callback[][3] = {
{eNB_handle_MBMS_SESSION_START_REQUEST, MCE_handle_MBMS_SESSION_START_RESPONSE, 0}, /* MBMSSessionStart */
{eNB_handle_MBMS_SESSION_STOP_REQUEST, MCE_handle_MBMS_SESSION_STOP_RESPONSE, 0}, /* MBMSSessionStop */
{eNB_handle_MBMS_SCHEDULING_INFORMATION, MCE_handle_MBMS_SCHEDULING_INFORMATION_RESPONSE, 0}, /* MBMSSchedulingInformation */
{0, 0, 0}, /* Error Indication */
{0, 0, 0}, /* Reset */
{MCE_handle_M2_SETUP_REQUEST, eNB_handle_M2_SETUP_RESPONSE, eNB_handle_M2_SETUP_FAILURE}, /* M2 Setup */
{0, 0, 0}, /* eNBConfigurationUpdate */
{0, 0, 0}, /* MCEConfigurationUpdate */
{0, 0, 0}, /* privateMessage */
{0, 0, 0}, /* MBMSSessionUpdate */
{0, 0, 0}, /* MBMSServiceCounting */
{0, 0, 0}, /* MBMSServiceCountingResultReport */
{0, 0, 0} /* MBMSOverloadNotification */
};
static char *m2ap_direction2String(int m2ap_dir) {
static char *m2ap_direction_String[] = {
"", /* Nothing */
"Originating message", /* originating message */
"Successfull outcome", /* successfull outcome */
"UnSuccessfull outcome", /* successfull outcome */
};
return(m2ap_direction_String[m2ap_dir]);
}
int m2ap_handle_message(instance_t instance, uint32_t assoc_id, int32_t stream,
const uint8_t * const data, const uint32_t data_length)
{
M2AP_M2AP_PDU_t pdu;
int ret;
DevAssert(data != NULL);
memset(&pdu, 0, sizeof(pdu));
if (m2ap_decode_pdu(&pdu, data, data_length) < 0) {
LOG_E(M2AP, "Failed to decode PDU\n");
return -1;
}
/* Checking procedure Code and direction of message */
if (pdu.choice.initiatingMessage.procedureCode > sizeof(m2ap_messages_callback) / (3 * sizeof(
m2ap_message_decoded_callback))
|| (pdu.present > M2AP_M2AP_PDU_PR_unsuccessfulOutcome)) {
LOG_E(M2AP, "[SCTP %d] Either procedureCode %ld or direction %d exceed expected\n",
assoc_id, pdu.choice.initiatingMessage.procedureCode, pdu.present);
ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_M2AP_M2AP_PDU, &pdu);
return -1;
}
/* No handler present.
* This can mean not implemented or no procedure for eNB (wrong direction).
*/
if (m2ap_messages_callback[pdu.choice.initiatingMessage.procedureCode][pdu.present - 1] == NULL) {
LOG_E(M2AP, "[SCTP %d] No handler for procedureCode %ld in %s\n",
assoc_id, pdu.choice.initiatingMessage.procedureCode,
m2ap_direction2String(pdu.present - 1));
ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_M2AP_M2AP_PDU, &pdu);
return -1;
}
/* Calling the right handler */
LOG_I(M2AP, "Calling handler with instance %d\n",instance);
ret = (*m2ap_messages_callback[pdu.choice.initiatingMessage.procedureCode][pdu.present - 1])
(instance, assoc_id, stream, &pdu);
ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_M2AP_M2AP_PDU, &pdu);
return ret;
}