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101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
5 years ago
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/*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSUE_NAS_EMM_STATE_H
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#define SRSUE_NAS_EMM_STATE_H
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#include "srslte/common/logmap.h"
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#include <atomic>
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#include <string>
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namespace srsue {
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// EMM states (3GPP 24.302 v14.0.0)
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class emm_state_t
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{
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public:
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enum class state_t {
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null = 0,
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deregistered,
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deregistered_initiated,
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registered,
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registered_initiated,
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tau_initiated,
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service_request_initiated,
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};
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// EMM-DEREGISTERED sub-states (3GPP 24.302 v14.0.0)
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enum class deregistered_substate_t {
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null = 0, // This should be used when not in EMM-DEREGISTERED
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normal_service,
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limited_service,
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attempting_to_attach,
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plmn_search,
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no_imsi,
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attach_needed,
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no_cell_available,
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e_call_inactive,
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};
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// EMM-REGISTERED sub-states (3GPP 24.302 v14.0.0)
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enum class registered_substate_t {
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null = 0, // This should be used when not in EMM-REGISTERED
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normal_service,
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attempting_to_update,
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limited_service,
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plmn_search,
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update_needed,
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no_cell_available,
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attempting_to_update_mm,
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imsi_dettach_initiated,
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};
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// FSM setters
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void set_null();
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void set_deregistered(deregistered_substate_t substate);
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void set_deregistered_initiated();
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void set_registered(registered_substate_t substate);
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void set_registered_initiated();
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void set_tau_initiated();
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void set_service_request_initiated();
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// FSM getters
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state_t get_state() { return state; }
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deregistered_substate_t get_deregistered_substate() { return deregistered_substate; }
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registered_substate_t get_registered_substate() { return registered_substate; }
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// Text Helpers
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const std::string get_full_state_text();
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private:
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std::atomic<state_t> state{state_t::null}; // The GW might require to know the NAS state from another thread
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deregistered_substate_t deregistered_substate = deregistered_substate_t::null;
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registered_substate_t registered_substate = registered_substate_t::null;
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srslte::log_ref nas_log{"NAS"};
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};
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const char* emm_state_text(emm_state_t::state_t type);
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const char* emm_deregistered_substate_text(emm_state_t::deregistered_substate_t type);
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const char* emm_registered_substate_text(emm_state_t::registered_substate_t type);
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} // namespace srsue
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#endif
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