221 lines
8.5 KiB
C
221 lines
8.5 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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/*****************************************************************************
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Source nas_network.h
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Version 0.1
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Date 2012/09/20
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Product NAS stack
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Subsystem NAS main process
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Author Frederic Maurel
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Description NAS procedure functions triggered by the network
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*****************************************************************************/
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#include "nas_network.h"
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#include "commonDef.h"
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#include "nas_log.h"
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#include "nas_timer.h"
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#include "as_message.h"
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#include "nas_proc.h"
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#include "user_defs.h"
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/****************************************************************************/
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/**************** E X T E R N A L D E F I N I T I O N S ****************/
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/****************************************************************************/
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/****************************************************************************/
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/******************* L O C A L D E F I N I T I O N S *******************/
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/****************************************************************************/
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/****************************************************************************/
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/****************** E X P O R T E D F U N C T I O N S ******************/
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/****************************************************************************/
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/****************************************************************************
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** **
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** Name: nas_network_initialize() **
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** **
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** Description: Initializes network internal data **
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** **
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** Inputs: None **
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** Others: None **
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** **
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** Outputs: None **
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** Return: None **
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** Others: None **
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** **
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***************************************************************************/
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void nas_network_initialize(void)
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{
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LOG_FUNC_IN;
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LOG_FUNC_OUT;
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}
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/****************************************************************************
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** **
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** Name: nas_network_cleanup() **
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** **
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** Description: Performs clean up procedure before the system is shutdown **
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** **
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** Inputs: None **
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** Others: None **
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** **
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** Outputs: None **
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** Return: None **
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** Others: None **
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** **
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***************************************************************************/
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void nas_network_cleanup(nas_user_t *user)
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{
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LOG_FUNC_IN;
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nas_proc_cleanup(user);
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LOG_FUNC_OUT;
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}
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/****************************************************************************
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** **
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** Name: nas_network_process_data() **
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** **
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** Description: Process Access Stratum messages received from the network **
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** and call applicable NAS procedure function. **
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** **
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** Inputs: msg_id: AS message identifier **
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** data: Generic pointer to data structure that has **
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** to be processed **
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** Others: None **
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** **
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** Outputs: None **
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** Return: RETURNok if the message has been success- **
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** fully processed; RETURNerror otherwise **
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** Others: None **
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** **
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***************************************************************************/
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int nas_network_process_data(nas_user_t *user, int msg_id, const void *data)
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{
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LOG_FUNC_IN;
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const as_message_t *msg = (as_message_t *)(data);
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int rc = RETURNok;
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/* Sanity check */
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if (msg_id != msg->msgID) {
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LOG_TRACE(ERROR, "NET-MAIN - Message identifier 0x%x to process "
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"is different from that of the network data (0x%x)",
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msg_id, msg->msgID);
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LOG_FUNC_RETURN (RETURNerror);
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}
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switch (msg_id) {
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case AS_BROADCAST_INFO_IND:
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break;
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case AS_CELL_INFO_CNF: {
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/* Received cell information confirm */
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const cell_info_cnf_t *info = &msg->msg.cell_info_cnf;
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int cell_found = (info->errCode == AS_SUCCESS);
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rc = nas_proc_cell_info(user, cell_found, info->tac,
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info->cellID, info->rat,
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info->rsrp, info->rsrq);
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break;
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}
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case AS_CELL_INFO_IND:
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break;
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case AS_PAGING_IND:
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break;
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case AS_NAS_ESTABLISH_CNF: {
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/* Received NAS signalling connection establishment confirm */
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const nas_establish_cnf_t *confirm = &msg->msg.nas_establish_cnf;
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if ( (confirm->errCode == AS_SUCCESS) ||
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(confirm->errCode == AS_TERMINATED_NAS) ) {
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rc = nas_proc_establish_cnf(user, confirm->nasMsg.data,
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confirm->nasMsg.length);
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} else {
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LOG_TRACE(WARNING, "NET-MAIN - "
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"Initial NAS message not delivered");
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rc = nas_proc_establish_rej(user);
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}
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break;
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}
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case AS_NAS_RELEASE_IND:
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/* Received NAS signalling connection releaase indication */
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rc = nas_proc_release_ind(user, msg->msg.nas_release_ind.cause);
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break;
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case AS_UL_INFO_TRANSFER_CNF:
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/* Received uplink data transfer confirm */
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if (msg->msg.ul_info_transfer_cnf.errCode != AS_SUCCESS) {
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LOG_TRACE(WARNING, "NET-MAIN - "
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"Uplink NAS message not delivered");
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rc = nas_proc_ul_transfer_rej(user);
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} else {
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rc = nas_proc_ul_transfer_cnf(user);
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}
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break;
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case AS_DL_INFO_TRANSFER_IND: {
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const dl_info_transfer_ind_t *info = &msg->msg.dl_info_transfer_ind;
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/* Received downlink data transfer indication */
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rc = nas_proc_dl_transfer_ind(user, info->nasMsg.data,
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info->nasMsg.length);
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break;
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}
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case AS_RAB_ESTABLISH_IND:
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break;
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case AS_RAB_RELEASE_IND:
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break;
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default:
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LOG_TRACE(ERROR, "NET-MAIN - Unexpected AS message type: 0x%x",
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msg_id);
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rc = RETURNerror;
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break;
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}
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LOG_FUNC_RETURN (rc);
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}
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/****************************************************************************/
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/********************* L O C A L F U N C T I O N S *********************/
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/****************************************************************************/
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