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115 lines
4.2 KiB
C++
115 lines
4.2 KiB
C++
/*
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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 SRSLTE_RRC_BEARER_CFG_H
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#define SRSLTE_RRC_BEARER_CFG_H
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#include "srsenb/hdr/stack/rrc/rrc_config.h"
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#include "srslte/common/logmap.h"
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#include "srslte/interfaces/enb_interfaces.h"
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#include "srslte/interfaces/enb_rrc_interface_types.h"
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namespace srsenb {
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class security_cfg_handler
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{
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public:
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explicit security_cfg_handler(const rrc_cfg_t& cfg_) : cfg(&cfg_) {}
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bool set_security_capabilities(const asn1::s1ap::ue_security_cap_s& caps);
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void set_security_key(const asn1::fixed_bitstring<256, false, true>& key);
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asn1::rrc::security_algorithm_cfg_s get_security_algorithm_cfg();
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const srslte::as_security_config_t& get_as_sec_cfg() const { return sec_cfg; }
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bool is_as_sec_cfg_valid() const { return k_enb_present; }
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void regenerate_keys_handover(uint32_t new_pci, uint32_t new_dl_earfcn);
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private:
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void generate_as_keys();
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srslte::log_ref log_h{"RRC"};
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const rrc_cfg_t* cfg = nullptr;
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bool k_enb_present = false;
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asn1::s1ap::ue_security_cap_s security_capabilities = {};
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uint8_t k_enb[32] = {}; // Provided by MME
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srslte::as_security_config_t sec_cfg = {};
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};
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class bearer_cfg_handler
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{
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public:
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struct erab_t {
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uint8_t id = 0;
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asn1::s1ap::erab_level_qos_params_s qos_params;
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asn1::bounded_bitstring<1, 160, true, true> address;
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uint32_t teid_out = 0;
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uint32_t teid_in = 0;
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};
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bearer_cfg_handler(uint16_t rnti_, const rrc_cfg_t& cfg_);
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void add_srb(uint8_t srb_id);
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int add_erab(uint8_t erab_id,
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const asn1::s1ap::erab_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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const asn1::unbounded_octstring<true>* nas_pdu);
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void release_erab(uint8_t erab_id);
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void release_erabs();
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void reest_bearers();
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bool fill_rr_cfg_ded(asn1::rrc::rr_cfg_ded_s& msg);
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void rr_ded_cfg_complete();
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// Methods to apply bearer updates
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void apply_pdcp_bearer_updates(pdcp_interface_rrc* pdcp, const security_cfg_handler& ue_sec_cfg);
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void apply_rlc_bearer_updates(rlc_interface_rrc* rlc);
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void add_gtpu_bearer(gtpu_interface_rrc* gtpu, uint32_t erab_id);
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void fill_pending_nas_info(asn1::rrc::rrc_conn_recfg_r8_ies_s* msg);
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const std::map<uint8_t, erab_t>& get_erabs() const { return erabs; }
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const asn1::rrc::drb_to_add_mod_list_l& get_established_drbs() const { return current_drbs; }
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const asn1::rrc::srb_to_add_mod_list_l& get_established_srbs() const { return current_srbs; }
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const asn1::rrc::drb_to_add_mod_list_l& get_pending_addmod_drbs() const { return drbs_to_add; }
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std::map<uint8_t, std::vector<uint8_t> > erab_info_list;
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std::map<uint8_t, erab_t> erabs;
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private:
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srslte::log_ref log_h{"RRC"};
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uint16_t rnti = 0;
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const rrc_cfg_t* cfg = nullptr;
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// last cfg
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asn1::rrc::srb_to_add_mod_list_l current_srbs;
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asn1::rrc::drb_to_add_mod_list_l current_drbs;
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// pending cfg updates
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asn1::rrc::srb_to_add_mod_list_l srbs_to_add;
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asn1::rrc::drb_to_add_mod_list_l drbs_to_add;
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asn1::rrc::drb_to_release_list_l drbs_to_release;
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};
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} // namespace srsenb
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#endif // SRSLTE_RRC_BEARER_CFG_H
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