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275 lines
9.2 KiB
C++
275 lines
9.2 KiB
C++
/**
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* Copyright 2013-2023 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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/******************************************************************************
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* File: ue_stack.h
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* Description: L2/L3 LTE stack class.
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*****************************************************************************/
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#ifndef SRSUE_UE_STACK_LTE_H
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#define SRSUE_UE_STACK_LTE_H
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#include "mac/mac.h"
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#include "mac_nr/mac_nr.h"
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#include "rrc/rrc.h"
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#include "rrc_nr/rrc_nr.h"
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#include "srsran/common/bearer_manager.h"
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#include "srsran/common/buffer_pool.h"
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#include "srsran/common/multiqueue.h"
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#include "srsran/common/string_helpers.h"
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#include "srsran/common/task_scheduler.h"
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#include "srsran/common/thread_pool.h"
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#include "srsran/common/time_prof.h"
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#include "srsran/interfaces/ue_interfaces.h"
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#include "srsran/radio/radio.h"
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#include "srsran/rlc/rlc.h"
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#include "srsran/upper/pdcp.h"
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#include "srsue/hdr/ue_metrics_interface.h"
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#include "ue_stack_base.h"
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#include "upper/nas.h"
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#include "upper/nas_5g.h"
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#include "upper/sdap.h"
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#include "upper/usim.h"
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#include <functional>
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#include <pthread.h>
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#include <stdarg.h>
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#include <string>
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namespace srsue {
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class phy_interface_stack_lte;
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class sdap_pdcp_adapter : public pdcp_interface_sdap_nr, public gw_interface_pdcp
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{
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public:
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sdap_pdcp_adapter(pdcp* parent_pdcp_, sdap* parent_sdap_) : parent_pdcp(parent_pdcp_), parent_sdap(parent_sdap_) {}
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void write_sdu(uint32_t lcid, srsran::unique_byte_buffer_t pdu) final
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{
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parent_pdcp->write_sdu(lcid, std::move(pdu));
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}
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void write_pdu(uint32_t lcid, srsran::unique_byte_buffer_t pdu) final
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{
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parent_sdap->write_pdu(lcid, std::move(pdu));
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}
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void write_pdu_mch(uint32_t lcid, srsran::unique_byte_buffer_t pdu) final
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{
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// not implemented
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}
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private:
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pdcp* parent_pdcp = nullptr;
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sdap* parent_sdap = nullptr;
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};
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class ue_stack_lte final : public ue_stack_base,
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public stack_interface_phy_lte,
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public stack_interface_phy_nr,
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public stack_interface_gw,
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public stack_interface_rrc,
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public srsran::thread
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{
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public:
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explicit ue_stack_lte();
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~ue_stack_lte();
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std::string get_type() final;
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int init(const stack_args_t& args_);
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int init(const stack_args_t& args_, phy_interface_stack_lte* phy_, gw_interface_stack* gw_);
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int init(const stack_args_t& args_,
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phy_interface_stack_lte* phy_,
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phy_interface_stack_nr* phy_nr_,
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gw_interface_stack* gw_);
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bool switch_on() final;
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bool switch_off() final;
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bool is_registered() final;
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bool start_service_request() final;
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bool enable_data();
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bool disable_data();
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void stop() final;
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bool get_metrics(stack_metrics_t* metrics) final;
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bool is_rrc_connected() { return rrc.is_connected(); };
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// RRC interface for PHY
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void in_sync() final;
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void out_of_sync() final;
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void new_cell_meas(const std::vector<phy_meas_t>& meas) override { rrc.new_cell_meas(meas); }
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void cell_search_complete(cell_search_ret_t ret, phy_cell_t found_cell) final;
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void cell_select_complete(bool status) final;
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void set_config_complete(bool status) final;
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void set_scell_complete(bool status) final;
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void set_phy_config_complete(bool status) final;
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// MAC Interface for EUTRA PHY
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uint16_t get_dl_sched_rnti(uint32_t tti) final { return mac.get_dl_sched_rnti(tti); }
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uint16_t get_ul_sched_rnti(uint32_t tti) final { return mac.get_ul_sched_rnti(tti); }
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sched_rnti_t get_dl_sched_rnti_nr(uint32_t tti) final { return mac_nr.get_dl_sched_rnti_nr(tti); }
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sched_rnti_t get_ul_sched_rnti_nr(uint32_t tti) final { return mac_nr.get_ul_sched_rnti_nr(tti); }
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void new_grant_ul(uint32_t cc_idx, mac_grant_ul_t grant, mac_interface_phy_lte::tb_action_ul_t* action) final
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{
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mac.new_grant_ul(cc_idx, grant, action);
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}
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void new_grant_dl(uint32_t cc_idx, mac_grant_dl_t grant, mac_interface_phy_lte::tb_action_dl_t* action) final
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{
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mac.new_grant_dl(cc_idx, grant, action);
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}
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void tb_decoded(uint32_t cc_idx, mac_grant_dl_t grant, bool ack[SRSRAN_MAX_CODEWORDS]) final
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{
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mac.tb_decoded(cc_idx, grant, ack);
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}
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void bch_decoded_ok(uint32_t cc_idx, uint8_t* payload, uint32_t len) final
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{
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mac.bch_decoded_ok(cc_idx, payload, len);
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}
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void mch_decoded(uint32_t len, bool crc, uint8_t* payload) final { mac.mch_decoded(len, crc, payload); }
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void set_mbsfn_config(uint32_t nof_mbsfn_services) final { mac.set_mbsfn_config(nof_mbsfn_services); }
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void run_tti(uint32_t tti, uint32_t tti_jump) final;
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// RRC interface for NR PHY
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void cell_search_found_cell(const cell_search_result_t& result) final;
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void cell_select_completed(const cell_select_result_t& result) final;
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// MAC Interface for NR PHY
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void tb_decoded(const uint32_t cc_idx,
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const mac_nr_grant_dl_t& grant,
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mac_interface_phy_nr::tb_action_dl_result_t result) final
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{
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mac_nr.tb_decoded(cc_idx, grant, std::move(result));
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}
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void new_grant_dl(const uint32_t cc_idx,
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const mac_nr_grant_dl_t& grant,
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mac_interface_phy_nr::tb_action_dl_t* action) final
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{
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mac_nr.new_grant_dl(cc_idx, grant, action);
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}
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void new_grant_ul(const uint32_t cc_idx,
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const mac_nr_grant_ul_t& grant,
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mac_interface_phy_nr::tb_action_ul_t* action) final
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{
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mac_nr.new_grant_ul(cc_idx, grant, action);
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}
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void prach_sent(uint32_t tti, uint32_t s_id, uint32_t t_id, uint32_t f_id, uint32_t ul_carrier_id) final
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{
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mac_nr.prach_sent(tti, s_id, t_id, f_id, ul_carrier_id);
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}
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bool sr_opportunity(uint32_t tti, uint32_t sr_id, bool meas_gap, bool ul_sch_tx) final
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{
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return mac_nr.sr_opportunity(tti, sr_id, meas_gap, ul_sch_tx);
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}
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// Interface for GW
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void write_sdu(uint32_t eps_bearer_id, srsran::unique_byte_buffer_t sdu) final;
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bool has_active_radio_bearer(uint32_t eps_bearer_id) final;
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// Interface for RRC
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tti_point get_current_tti() final { return current_tti; }
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void add_eps_bearer(uint8_t eps_bearer_id, srsran::srsran_rat_t rat, uint32_t lcid) final;
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void remove_eps_bearer(uint8_t eps_bearer_id) final;
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void reset_eps_bearers() final;
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srsran::ext_task_sched_handle get_task_sched() { return {&task_sched}; }
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private:
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void run_thread() final;
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void run_tti_impl(uint32_t tti, uint32_t tti_jump);
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void stop_impl();
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const uint32_t TTI_STAT_PERIOD = 1024;
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const std::chrono::milliseconds TTI_WARN_THRESHOLD_MS{5};
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const uint32_t SYNC_QUEUE_WARN_THRESHOLD = 5;
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std::atomic<bool> running{false};
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srsue::stack_args_t args;
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srsran::tti_point current_tti;
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// UE stack logging
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srslog::basic_logger& stack_logger;
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srslog::basic_logger& mac_logger;
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srslog::basic_logger& rlc_logger;
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srslog::basic_logger& pdcp_logger;
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srslog::basic_logger& rrc_logger;
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srslog::basic_logger& usim_logger;
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srslog::basic_logger& nas_logger;
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srslog::basic_logger& nas5g_logger;
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// UE NR stack logging
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srslog::basic_logger& mac_nr_logger;
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srslog::basic_logger& rrc_nr_logger;
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srslog::basic_logger& rlc_nr_logger;
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srslog::basic_logger& pdcp_nr_logger;
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// tracing
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srsran::mac_pcap mac_pcap;
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srsran::mac_pcap mac_nr_pcap;
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srsran::nas_pcap nas_pcap;
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// RAT-specific interfaces
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phy_interface_stack_lte* phy = nullptr;
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gw_interface_stack* gw = nullptr;
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phy_interface_stack_nr* phy_nr = nullptr;
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// Thread
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static const int STACK_MAIN_THREAD_PRIO = 4; // Next lower priority after PHY workers
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srsran::block_queue<stack_metrics_t> pending_stack_metrics;
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task_scheduler task_sched;
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srsran::task_multiqueue::queue_handle sync_task_queue, ue_task_queue, gw_queue_id, cfg_task_queue;
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// TTI stats
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srsran::tprof<srsran::sliding_window_stats_ms> tti_tprof;
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// stack components
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srsue::mac mac;
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srsran::rlc rlc;
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srsran::pdcp pdcp;
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srsue::rrc rrc;
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srsue::mac_nr mac_nr;
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srsran::rlc rlc_nr;
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srsran::pdcp pdcp_nr;
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srsue::rrc_nr rrc_nr;
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srsue::nas nas;
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srsue::nas_5g nas_5g;
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std::unique_ptr<usim_base> usim;
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// SDAP only applies to NR
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srsue::sdap sdap;
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sdap_pdcp_adapter sdap_pdcp;
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ue_bearer_manager bearers; // helper to manage mapping between EPS and radio bearers
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// Metrics helper
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std::atomic<uint32_t> ul_dropped_sdus{0};
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};
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} // namespace srsue
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#endif // SRSUE_UE_STACK_LTE_H
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