129 lines
4.7 KiB
C
129 lines
4.7 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 EmmNull.c
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Version 0.1
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Date 2012/10/03
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Product NAS stack
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Subsystem EPS Mobility Management
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Author Frederic Maurel
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Description Implements the EPS Mobility Management procedures executed
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when the EMM-SAP is in EMM-NULL state.
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In EMM-NULL state, the EPS capability is disabled in the UE.
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No EPS mobility management function shall be performed.
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*****************************************************************************/
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#include "emm_fsm.h"
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#include "commonDef.h"
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#include "nas_log.h"
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#include "emm_proc.h"
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#include "user_defs.h"
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#include <assert.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: EmmNull() **
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** **
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** Description: Handles the behaviour of the UE while the EMM-SAP is in **
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** EMM-NULL state. **
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** **
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** Inputs: evt: The received EMM-SAP event **
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** Others: emm_fsm_status **
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** **
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** Outputs: None **
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** Return: RETURNok, RETURNerror **
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** Others: emm_fsm_status **
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** **
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***************************************************************************/
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int EmmNull(nas_user_t *user, const emm_reg_t *evt)
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{
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LOG_FUNC_IN;
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int rc;
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assert(emm_fsm_get_status(user) == EMM_NULL);
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/* Delete the authentication data RAND and RES */
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rc = emm_proc_authentication_delete(user);
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if (rc != RETURNok) {
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LOG_FUNC_RETURN (rc);
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}
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switch (evt->primitive) {
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case _EMMREG_S1_ENABLED:
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/*
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* The EPS capability has been enabled in the UE:
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* Move to the DEREGISTERED state;
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*/
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rc = emm_fsm_set_status(user, EMM_DEREGISTERED);
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/*
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* And initialize the EMM procedure call manager in order to
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* establish an EMM context and make the UE reachable by an MME.
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*/
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if (rc != RETURNerror) {
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rc = emm_proc_initialize(user);
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}
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break;
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default:
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rc = RETURNerror;
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LOG_TRACE(ERROR, "EMM-FSM - Primitive is not valid (%d)",
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evt->primitive);
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LOG_TRACE(WARNING, "EMM-FSM - Set phone functionnality to "
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"enable EPS capability (+cfun=1)");
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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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