mirror of https://github.com/PentHertz/srsLTE.git
100 lines
4.8 KiB
C++
100 lines
4.8 KiB
C++
/**
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* Copyright 2013-2022 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN 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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* srsRAN 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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#include "srsran/asn1/s1ap_utils.h"
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#include "srsran/interfaces/enb_rrc_interface_types.h"
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#ifndef SRSRAN_ENB_RRC_INTERFACES_H
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#define SRSRAN_ENB_RRC_INTERFACES_H
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namespace srsenb {
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// RRC interface for S1AP
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class rrc_interface_s1ap
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{
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public:
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using failed_erab_list = std::map<uint32_t, asn1::s1ap::cause_c>;
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virtual void write_dl_info(uint16_t rnti, srsran::unique_byte_buffer_t sdu) = 0;
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virtual void release_ue(uint16_t rnti) = 0;
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virtual bool setup_ue_ctxt(uint16_t rnti, const asn1::s1ap::init_context_setup_request_s& msg) = 0;
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virtual bool modify_ue_ctxt(uint16_t rnti, const asn1::s1ap::ue_context_mod_request_s& msg) = 0;
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virtual bool has_erab(uint16_t rnti, uint32_t erab_id) const = 0;
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virtual bool release_erabs(uint32_t rnti) = 0;
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virtual int get_erab_addr_in(uint16_t rnti, uint16_t erab_id, transp_addr_t& addr_in, uint32_t& teid_in) const = 0;
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virtual void set_aggregate_max_bitrate(uint16_t rnti, const asn1::s1ap::ue_aggregate_maximum_bitrate_s& bitrate) = 0;
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/**
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* TS 36.413, 8.2.1 and 8.3.1 - Setup E-RAB / Initial Context Setup
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* @return if error, cause argument is updated with cause
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*/
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virtual int setup_erab(uint16_t rnti,
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uint16_t erab_id,
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const asn1::s1ap::erab_level_qos_params_s& qos_params,
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srsran::const_span<uint8_t> nas_pdu,
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const transp_addr_t& addr,
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uint32_t gtpu_teid_out,
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asn1::s1ap::cause_c& cause) = 0;
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/**
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* TS 36.413, 8.2.2 - Modify E-RAB
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* @return if error, cause argument is updated with cause
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*/
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virtual int modify_erab(uint16_t rnti,
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uint16_t erab_id,
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const asn1::s1ap::erab_level_qos_params_s& qos_params,
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srsran::const_span<uint8_t> nas_pdu,
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asn1::s1ap::cause_c& cause) = 0;
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/**
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* TS 36.413, 8.2.3 - Release E-RAB id
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* @return error if E-RAB id or rnti were not found
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*/
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virtual int release_erab(uint16_t rnti, uint16_t erab_id) = 0;
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virtual void add_paging_id(uint32_t ueid, const asn1::s1ap::ue_paging_id_c& ue_paging_id) = 0;
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/// TS 36.413, 8.2.1, 8.2.2, 8.2.3 - Notify UE of ERAB updates (done via RRC Reconfiguration Message)
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virtual int notify_ue_erab_updates(uint16_t rnti, srsran::const_span<uint8_t> nas_pdu) = 0;
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/**
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* Reports the reception of S1 HandoverCommand / HandoverPreparationFailure or abnormal conditions during
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* S1 Handover preparation back to RRC.
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*
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* @param rnti user
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* @param is_success true if ho cmd was received
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* @param container TargeteNB RRCConnectionReconfiguration message with MobilityControlInfo
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*/
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enum class ho_prep_result { success, failure, timeout };
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virtual void ho_preparation_complete(uint16_t rnti,
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ho_prep_result result,
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const asn1::s1ap::ho_cmd_s& msg,
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srsran::unique_byte_buffer_t container) = 0;
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virtual uint16_t
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start_ho_ue_resource_alloc(const asn1::s1ap::ho_request_s& msg,
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const asn1::s1ap::sourceenb_to_targetenb_transparent_container_s& container,
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asn1::s1ap::cause_c& failure_cause) = 0;
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virtual void set_erab_status(uint16_t rnti, const asn1::s1ap::bearers_subject_to_status_transfer_list_l& erabs) = 0;
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};
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} // namespace srsenb
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#endif // SRSRAN_ENB_RRC_INTERFACES_H
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