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89 lines
3.6 KiB
C++
89 lines
3.6 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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#ifndef SRSENB_NGAP_UE_BEARER_MANAGER_H
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#define SRSENB_NGAP_UE_BEARER_MANAGER_H
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#include "srsran/asn1/asn1_utils.h"
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#include "srsran/asn1/ngap.h"
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#include "srsran/config.h"
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#include "srsran/interfaces/enb_gtpu_interfaces.h"
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#include "srsran/interfaces/gnb_rrc_nr_interfaces.h"
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namespace srsenb {
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/**
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* @brief Manages the GTPU bearers as part of the NGAP session procedures
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* */
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class ngap_ue_bearer_manager
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{
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public:
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struct pdu_session_t {
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struct gtpu_tunnel {
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uint32_t teid_out = 0;
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uint32_t teid_in = 0;
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asn1::bounded_bitstring<1, 160, true, true> address_out;
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asn1::bounded_bitstring<1, 160, true, true> address_in;
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};
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uint8_t id = 0;
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uint8_t lcid = 0;
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asn1::ngap::qos_flow_level_qos_params_s qos_params;
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std::vector<gtpu_tunnel> tunnels;
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};
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ngap_ue_bearer_manager(gtpu_interface_rrc* gtpu_, srslog::basic_logger& logger_);
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~ngap_ue_bearer_manager();
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int add_pdu_session(uint16_t rnti,
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uint8_t pdu_session_id,
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const asn1::ngap::qos_flow_level_qos_params_s& qos,
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const asn1::bounded_bitstring<1, 160, true, true>& addr,
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uint32_t teid_out,
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uint16_t& lcid,
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asn1::bounded_bitstring<1, 160, true, true>& addr_in,
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uint32_t& teid_in,
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asn1::ngap::cause_c& cause);
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int reset_pdu_sessions(uint16_t rnti);
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using pdu_session_list_t = std::map<uint8_t, pdu_session_t>;
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const pdu_session_list_t& pdu_sessions() const { return pdu_session_list; }
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private:
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gtpu_interface_rrc* gtpu = nullptr;
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pdu_session_list_t pdu_session_list;
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srslog::basic_logger& logger;
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std::map<uint32_t, uint32_t> next_lcid_list; // Map RNTI to next LCID to be allocated
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int add_gtpu_bearer(uint16_t rnti,
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uint32_t pdu_session_id,
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uint32_t teid_out,
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asn1::bounded_bitstring<1, 160, true, true> address,
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pdu_session_t::gtpu_tunnel& tunnel, // out parameter
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const gtpu_interface_rrc::bearer_props* props = nullptr);
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void rem_gtpu_bearer(uint16_t rnti, uint32_t pdu_session_id);
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uint8_t allocate_lcid(uint32_t rnti);
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};
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} // namespace srsenb
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#endif // SRSENB_NGAP_UE_BEARER_MANAGER_H
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