/* * 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 */ /***************************************************************************** Source EmmDeregisteredNormalService.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-DEREGISTERED.NORMAL-SERVICE state. In EMM-DEREGISTERED.NORMAL-SERVICE state, the EPS update status is EU1 or EU2, in the meantime a suitable cell has been found and the PLMN or tracking area is not in the forbidden list. *****************************************************************************/ #include "emm_fsm.h" #include "commonDef.h" #include "networkDef.h" #include "nas_log.h" #include "targets/RT/USER/lte-softmodem.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: EmmDeregisteredNormalService() ** ** ** ** Description: Handles the behaviour of the UE while the EMM-SAP is in ** ** EMM-DEREGISTERED.NORMAL-SERVICE state. ** ** ** ** 3GPP TS 24.301, section 5.2.2.3.1 ** ** The UE shall initiate an attach or combined attach proce- ** ** dure. ** ** ** ** Inputs: evt: The received EMM-SAP event ** ** Others: emm_fsm_status ** ** ** ** Outputs: None ** ** Return: RETURNok, RETURNerror ** ** Others: emm_fsm_status ** ** ** ***************************************************************************/ int EmmDeregisteredNormalService(nas_user_t *user, const emm_reg_t *evt) { LOG_FUNC_IN; int rc = RETURNerror; assert(emm_fsm_get_status(user) == EMM_DEREGISTERED_NORMAL_SERVICE); switch (evt->primitive) { case _EMMREG_REGISTER_REQ: /* * The user manually re-selected a PLMN to register to */ rc = emm_fsm_set_status(user, EMM_DEREGISTERED_PLMN_SEARCH); if (rc != RETURNerror) { /* Process the network registration request */ rc = emm_fsm_process(user, evt); } break; case _EMMREG_ATTACH_INIT: /* * Initiate the attach procedure for EPS services */ if(get_softmodem_params()->usim_test == 0) { rc = emm_proc_attach(user, EMM_ATTACH_TYPE_EPS); } else { rc = emm_proc_attach(user, EMM_ATTACH_TYPE_IMSI); // CMW500 IMSI initial attach expected } break; case _EMMREG_ATTACH_REQ: /* * An EPS network attach has been requested (Attach Request * message successfully delivered to the network); * enter state EMM-REGISTERED-INITIATED */ rc = emm_fsm_set_status(user, EMM_REGISTERED_INITIATED); break; case _EMMREG_LOWERLAYER_SUCCESS: /* * Initial NAS message has been successfully delivered * to the network */ rc = emm_proc_lowerlayer_success(user->lowerlayer_data); break; case _EMMREG_LOWERLAYER_FAILURE: /* * Initial NAS message failed to be delivered to the network */ rc = emm_proc_lowerlayer_failure(user->lowerlayer_data, TRUE); break; case _EMMREG_LOWERLAYER_RELEASE: /* * NAS signalling connection has been released */ rc = emm_proc_lowerlayer_release(user->lowerlayer_data); break; case _EMMREG_ATTACH_CNF: /* * Attach procedure successful and default EPS bearer * context activated; * enter state EMM-REGISTERED. */ rc = emm_fsm_set_status(user, EMM_REGISTERED); 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 *********************/ /****************************************************************************/