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142 lines
4.5 KiB
C++
142 lines
4.5 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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/******************************************************************************
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* File: gnb_stack_nr.h
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* Description: L2/L3 gNB stack class.
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*****************************************************************************/
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#ifndef SRSRAN_GNB_STACK_NR_H
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#define SRSRAN_GNB_STACK_NR_H
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#include "srsenb/hdr/stack/mac/nr/mac_nr.h"
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#include "srsenb/hdr/stack/rrc/rrc_nr.h"
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#include "upper/pdcp.h"
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#include "upper/rlc.h"
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#include "upper/sdap.h"
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#include "enb_stack_base.h"
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#include "srsran/interfaces/gnb_interfaces.h"
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namespace srsenb {
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struct gnb_stack_args_t {
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stack_log_args_t log;
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mac_nr_args_t mac;
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};
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class gnb_stack_nr final : public srsenb::enb_stack_base,
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public stack_interface_phy_nr,
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public stack_interface_mac,
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public srsue::stack_interface_gw,
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public rrc_nr_interface_rrc,
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public pdcp_interface_gtpu, // for user-plane over X2
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public srsran::thread
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{
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public:
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explicit gnb_stack_nr(srslog::sink& log_sink);
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~gnb_stack_nr() final;
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int init(const gnb_stack_args_t& args_,
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const rrc_nr_cfg_t& rrc_cfg_,
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phy_interface_stack_nr* phy_,
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x2_interface* x2_);
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// eNB stack base interface
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void stop() final;
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std::string get_type() final;
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bool get_metrics(srsenb::stack_metrics_t* metrics) final;
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// GW srsue stack_interface_gw dummy interface
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bool is_registered() override { return true; };
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bool start_service_request() override { return true; };
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// Temporary GW interface
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void write_sdu(uint32_t lcid, srsran::unique_byte_buffer_t sdu) override;
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bool has_active_radio_bearer(uint32_t eps_bearer_id) override;
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bool switch_on();
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void tti_clock() override;
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// MAC interface to trigger processing of received PDUs
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void process_pdus() final;
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void toggle_padding() override {}
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int slot_indication(const srsran_slot_cfg_t& slot_cfg) override;
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int get_dl_sched(const srsran_slot_cfg_t& slot_cfg, dl_sched_t& dl_sched) override;
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int get_ul_sched(const srsran_slot_cfg_t& slot_cfg, ul_sched_t& ul_sched) override;
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int pucch_info(const srsran_slot_cfg_t& slot_cfg, const pucch_info_t& pucch_info) override;
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int pusch_info(const srsran_slot_cfg_t& slot_cfg, pusch_info_t& pusch_info) override;
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void rach_detected(const rach_info_t& rach_info) override;
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// X2 interface
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// control plane, i.e. rrc_nr_interface_rrc
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int sgnb_addition_request(uint16_t eutra_rnti, const sgnb_addition_req_params_t& params) final
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{
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return rrc.sgnb_addition_request(eutra_rnti, params);
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};
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int sgnb_reconfiguration_complete(uint16_t eutra_rnti, asn1::dyn_octstring reconfig_response) final
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{
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return rrc.sgnb_reconfiguration_complete(eutra_rnti, reconfig_response);
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};
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// X2 data interface
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void write_sdu(uint16_t rnti, uint32_t lcid, srsran::unique_byte_buffer_t sdu, int pdcp_sn = -1) final
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{
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auto task = [this, rnti, lcid, pdcp_sn](srsran::unique_byte_buffer_t& sdu) {
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pdcp.write_sdu(rnti, lcid, std::move(sdu), pdcp_sn);
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};
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gtpu_task_queue.push(std::bind(task, std::move(sdu)));
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}
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std::map<uint32_t, srsran::unique_byte_buffer_t> get_buffered_pdus(uint16_t rnti, uint32_t lcid) final
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{
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// TODO: make it thread-safe. For now, this function is unused
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return pdcp.get_buffered_pdus(rnti, lcid);
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}
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private:
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void run_thread() final;
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void tti_clock_impl();
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// args
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gnb_stack_args_t args = {};
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phy_interface_stack_nr* phy = nullptr;
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srslog::basic_logger& rrc_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& stack_logger;
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// task scheduling
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static const int STACK_MAIN_THREAD_PRIO = 4;
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srsran::task_scheduler task_sched;
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srsran::task_multiqueue::queue_handle sync_task_queue, ue_task_queue, gtpu_task_queue, mac_task_queue,
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metrics_task_queue;
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srsran::dyn_blocking_queue<stack_metrics_t> pending_stack_metrics;
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// derived
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srsenb::mac_nr mac;
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srsenb::rlc rlc;
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srsenb::pdcp pdcp;
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srsenb::rrc_nr rrc;
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// std::unique_ptr<sdap> m_sdap;
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// state
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std::atomic<bool> running = {false};
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};
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} // namespace srsenb
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#endif // SRSRAN_GNB_STACK_NR_H
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