src/s1ap/handlers/ctxrelease_req.c

/*
 * Copyright (c) 2019, Infosys Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * 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.
 */


#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <pthread.h>

#include "err_codes.h"
#include "options.h"
#include "ipc_api.h"
#include "main.h"
#include "s1ap.h"
#include "s1ap_config.h"
#include "sctp_conn.h"
#include "s1ap_structs.h"
#include "s1ap_msg_codes.h"
#include "msgType.h"


extern int g_enb_fd;
extern ipc_handle ipc_S1ap_Hndl;

int
s1_ctx_release_request_handler(InitiatingMessage_t *msg)
{
	struct s1_incoming_msg_data_t release_request= {0};
	struct proto_IE s1_ctx_rel_req_ies;

	log_msg(LOG_INFO, "Parse s1ap context release request message:--\n");

	convertUeCtxRelReqToProtoIe(msg, &s1_ctx_rel_req_ies);

	/*TODO: Validate all eNB info*/
     for(int i = 0; i < s1_ctx_rel_req_ies.no_of_IEs; i++)
    {
        switch(s1_ctx_rel_req_ies.data[i].IE_type)
        {
            case S1AP_IE_MME_UE_ID:
                {
	                release_request.ue_idx = s1_ctx_rel_req_ies.data[i].val.mme_ue_s1ap_id;
                }break;
            default:
                log_msg(LOG_WARNING,"Unhandled IE.\n");
        }
    }

	
    release_request.msg_type = s1_release_request;
	release_request.destInstAddr = htonl(mmeAppInstanceNum_c);
	release_request.srcInstAddr = htonl(s1apAppInstanceNum_c);
	int i = 0;
	i = send_tipc_message(ipc_S1ap_Hndl,mmeAppInstanceNum_c,
				(char *)&release_request,
				S1_READ_MSG_BUF_SIZE);
				
	if (i < 0) {

		log_msg(LOG_ERROR,"Error To write in s1_ctx_release_request_handler\n");
	}

	log_msg(LOG_INFO, "Ctx Release request sent to mme-app."
				"Bytes send %d\n", i);

	//TODO: free IEs
	return SUCCESS;
}