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77 lines
3.0 KiB
C++
77 lines
3.0 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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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_nr::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_nr::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_nr::cause_c& cause);
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int reset_pdu_sessions(uint16_t rnti);
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private:
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gtpu_interface_rrc* gtpu = nullptr;
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std::map<uint8_t, pdu_session_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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