/* * 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 1.0 (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.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 */ /***************************************************************************** Source EmmRegistered.c Version 0.1 Date 2012/10/03 Product NAS stack Subsystem EPS Mobility Management Author Frederic Maurel Description Implements the EPS Mobility Management procedures executed when the EMM-SAP is in EMM-REGISTERED state. In EMM-REGISTERED state, an EMM context has been established and a default EPS bearer context has been activated in the UE and the MME. The UE may initiate sending and receiving user data and signal- ling information and reply to paging. Additionally, tracking area updating or combined tracking area updating procedure is performed. *****************************************************************************/ #include "emm_fsm.h" #include "commonDef.h" #include "networkDef.h" #include "nas_log.h" #include "emm_proc.h" #include <assert.h> /****************************************************************************/ /**************** E X T E R N A L D E F I N I T I O N S ****************/ /****************************************************************************/ /****************************************************************************/ /******************* L O C A L D E F I N I T I O N S *******************/ /****************************************************************************/ /****************************************************************************/ /****************** E X P O R T E D F U N C T I O N S ******************/ /****************************************************************************/ /**************************************************************************** ** ** ** Name: EmmRegistered() ** ** ** ** Description: Handles the behaviour of the UE and the MME while the ** ** EMM-SAP is in EMM-REGISTERED state. ** ** ** ** Inputs: evt: The received EMM-SAP event ** ** Others: emm_fsm_status ** ** ** ** Outputs: None ** ** Return: RETURNok, RETURNerror ** ** Others: emm_fsm_status ** ** ** ***************************************************************************/ int EmmRegistered(nas_user_t *user, const emm_reg_t *evt) { LOG_FUNC_IN; int rc = RETURNerror; assert(emm_fsm_get_status(user) == EMM_REGISTERED); switch (evt->primitive) { case _EMMREG_DETACH_INIT: /* * Initiate detach procedure for EPS services */ rc = emm_proc_detach(user, EMM_DETACH_TYPE_EPS, evt->u.detach.switch_off); break; case _EMMREG_DETACH_REQ: /* * Network detach has been requested (Detach Request * message successfully delivered to the network); * enter state EMM-DEREGISTERED-INITIATED */ rc = emm_fsm_set_status(user, EMM_DEREGISTERED_INITIATED); break; case _EMMREG_DETACH_CNF: /* * The UE implicitly detached from the network (all EPS * bearer contexts may have been deactivated) */ rc = emm_fsm_set_status(user, EMM_DEREGISTERED); break; case _EMMREG_TAU_REQ: /* * TODO: Tracking Area Update has been requested */ LOG_TRACE(ERROR, "EMM-FSM - Tracking Area Update procedure " "is not implemented"); break; case _EMMREG_SERVICE_REQ: /* * TODO: Service Request has been requested */ LOG_TRACE(ERROR, "EMM-FSM - Service Request procedure " "is not implemented"); break; case _EMMREG_LOWERLAYER_SUCCESS: /* * Data transfer message has been successfully delivered */ rc = emm_proc_lowerlayer_success(user->lowerlayer_data); break; case _EMMREG_LOWERLAYER_FAILURE: /* * Data transfer message failed to be delivered */ rc = emm_proc_lowerlayer_failure(user->lowerlayer_data, FALSE); break; case _EMMREG_LOWERLAYER_RELEASE: /* * NAS signalling connection has been released */ rc = emm_proc_lowerlayer_release(user->lowerlayer_data); break; default: LOG_TRACE(ERROR, "EMM-FSM - Primitive is not valid (%d)", evt->primitive); break; } LOG_FUNC_RETURN (rc); } /****************************************************************************/ /********************* L O C A L F U N C T I O N S *********************/ /****************************************************************************/