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190 lines
7.0 KiB
C++
190 lines
7.0 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 SRSENB_RRC_H
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#define SRSENB_RRC_H
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#include "rrc_bearer_cfg.h"
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#include "rrc_cell_cfg.h"
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#include "rrc_metrics.h"
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#include "srsenb/hdr/stack/upper/common_enb.h"
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#include "srslte/common/block_queue.h"
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#include "srslte/common/buffer_pool.h"
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#include "srslte/common/common.h"
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#include "srslte/common/logmap.h"
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#include "srslte/common/stack_procedure.h"
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#include "srslte/common/timeout.h"
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#include "srslte/interfaces/enb_interfaces.h"
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#include <map>
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#include <queue>
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namespace srsenb {
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static const char rrc_state_text[RRC_STATE_N_ITEMS][100] = {"IDLE",
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"WAIT FOR CON SETUP COMPLETE",
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"WAIT FOR SECURITY MODE COMPLETE",
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"WAIT FOR UE CAPABILITIY INFORMATION",
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"WAIT FOR CON RECONF COMPLETE",
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"RRC CONNECTED",
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"RELEASE REQUEST"};
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class rrc final : public rrc_interface_pdcp,
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public rrc_interface_mac,
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public rrc_interface_rlc,
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public rrc_interface_s1ap
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{
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public:
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rrc();
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~rrc();
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void init(const rrc_cfg_t& cfg_,
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phy_interface_rrc_lte* phy,
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mac_interface_rrc* mac,
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rlc_interface_rrc* rlc,
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pdcp_interface_rrc* pdcp,
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s1ap_interface_rrc* s1ap,
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gtpu_interface_rrc* gtpu,
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srslte::timer_handler* timers_);
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void stop();
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void get_metrics(rrc_metrics_t& m);
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void tti_clock();
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// rrc_interface_mac
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void rl_failure(uint16_t rnti) override;
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void add_user(uint16_t rnti, const sched_interface::ue_cfg_t& init_ue_cfg) override;
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void upd_user(uint16_t new_rnti, uint16_t old_rnti) override;
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void set_activity_user(uint16_t rnti) override;
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bool is_paging_opportunity(uint32_t tti, uint32_t* payload_len) override;
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uint8_t* read_pdu_bcch_dlsch(const uint8_t cc_idx, const uint32_t sib_index) override;
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// rrc_interface_rlc
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void read_pdu_pcch(uint8_t* payload, uint32_t buffer_size) override;
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void max_retx_attempted(uint16_t rnti) override;
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// rrc_interface_s1ap
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void write_dl_info(uint16_t rnti, srslte::unique_byte_buffer_t sdu) override;
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void release_complete(uint16_t rnti) override;
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bool setup_ue_ctxt(uint16_t rnti, const asn1::s1ap::init_context_setup_request_s& msg) override;
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bool modify_ue_ctxt(uint16_t rnti, const asn1::s1ap::ue_context_mod_request_s& msg) override;
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bool setup_ue_erabs(uint16_t rnti, const asn1::s1ap::erab_setup_request_s& msg) override;
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bool release_erabs(uint32_t rnti) override;
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void add_paging_id(uint32_t ueid, const asn1::s1ap::ue_paging_id_c& UEPagingID) override;
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void ho_preparation_complete(uint16_t rnti, bool is_success, srslte::unique_byte_buffer_t rrc_container) override;
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// rrc_interface_pdcp
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void write_pdu(uint16_t rnti, uint32_t lcid, srslte::unique_byte_buffer_t pdu) override;
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uint32_t get_nof_users();
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// logging
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typedef enum { Rx = 0, Tx } direction_t;
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template <class T>
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void log_rrc_message(const std::string& source,
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const direction_t dir,
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const srslte::byte_buffer_t* pdu,
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const T& msg,
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const std::string& msg_type)
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{
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if (rrc_log->get_level() == srslte::LOG_LEVEL_INFO) {
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rrc_log->info("%s - %s %s (%d B)\n", source.c_str(), dir == Tx ? "Tx" : "Rx", msg_type.c_str(), pdu->N_bytes);
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} else if (rrc_log->get_level() >= srslte::LOG_LEVEL_DEBUG) {
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asn1::json_writer json_writer;
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msg.to_json(json_writer);
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rrc_log->debug_hex(pdu->msg,
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pdu->N_bytes,
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"%s - %s %s (%d B)\n",
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source.c_str(),
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dir == Tx ? "Tx" : "Rx",
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msg_type.c_str(),
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pdu->N_bytes);
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rrc_log->debug_long("Content:\n%s\n", json_writer.to_string().c_str());
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}
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}
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private:
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class ue;
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// args
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srslte::timer_handler* timers = nullptr;
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srslte::byte_buffer_pool* pool = nullptr;
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phy_interface_rrc_lte* phy = nullptr;
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mac_interface_rrc* mac = nullptr;
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rlc_interface_rrc* rlc = nullptr;
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pdcp_interface_rrc* pdcp = nullptr;
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gtpu_interface_rrc* gtpu = nullptr;
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s1ap_interface_rrc* s1ap = nullptr;
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srslte::log_ref rrc_log;
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// derived params
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std::unique_ptr<cell_info_common_list> cell_common_list;
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// state
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std::unique_ptr<freq_res_common_list> pucch_res_list;
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std::map<uint16_t, std::unique_ptr<ue> > users; // NOTE: has to have fixed addr
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std::map<uint32_t, asn1::rrc::paging_record_s> pending_paging;
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void process_release_complete(uint16_t rnti);
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void process_rl_failure(uint16_t rnti);
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void rem_user(uint16_t rnti);
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uint32_t generate_sibs();
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void configure_mbsfn_sibs(asn1::rrc::sib_type2_s* sib2, asn1::rrc::sib_type13_r9_s* sib13);
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void config_mac();
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void parse_ul_dcch(uint16_t rnti, uint32_t lcid, srslte::unique_byte_buffer_t pdu);
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void parse_ul_ccch(uint16_t rnti, srslte::unique_byte_buffer_t pdu);
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srslte::byte_buffer_t byte_buf_paging;
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typedef struct {
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uint16_t rnti;
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uint32_t lcid;
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srslte::unique_byte_buffer_t pdu;
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} rrc_pdu;
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const static uint32_t LCID_EXIT = 0xffff0000;
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const static uint32_t LCID_REM_USER = 0xffff0001;
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const static uint32_t LCID_REL_USER = 0xffff0002;
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const static uint32_t LCID_RLF_USER = 0xffff0003;
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const static uint32_t LCID_ACT_USER = 0xffff0004;
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bool running = false;
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static const int RRC_THREAD_PRIO = 65;
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srslte::block_queue<rrc_pdu> rx_pdu_queue;
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asn1::rrc::mcch_msg_s mcch;
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bool enable_mbms = false;
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rrc_cfg_t cfg = {};
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uint32_t nof_si_messages = 0;
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asn1::rrc::sib_type7_s sib7;
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class enb_mobility_handler;
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std::unique_ptr<enb_mobility_handler> enb_mobility_cfg;
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void rem_user_thread(uint16_t rnti);
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std::mutex paging_mutex;
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};
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} // namespace srsenb
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#endif // SRSENB_RRC_H
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