mirror of https://github.com/PentHertz/srsLTE.git
234 lines
7.2 KiB
C++
234 lines
7.2 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2017 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of srsLTE.
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*
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* srsUE 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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* srsUE 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_MAC_H
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#define SRSENB_MAC_H
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#include <vector>
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#include "srslte/common/log.h"
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#include "srslte/common/timers.h"
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#include "srslte/interfaces/enb_interfaces.h"
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#include "srslte/interfaces/sched_interface.h"
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#include "srslte/common/tti_sync_cv.h"
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#include "srslte/common/threads.h"
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#include "srslte/common/tti_sync_cv.h"
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#include "srslte/common/mac_pcap.h"
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#include "scheduler.h"
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#include "scheduler_metric.h"
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#include "srslte/interfaces/enb_metrics_interface.h"
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#include "ue.h"
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namespace srsenb {
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class pdu_process_handler
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{
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public:
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virtual bool process_pdus() = 0;
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};
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typedef struct {
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sched_interface::sched_args_t sched;
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int link_failure_nof_err;
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} mac_args_t;
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class mac
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:public mac_interface_phy,
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public mac_interface_rlc,
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public mac_interface_rrc,
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public srslte::mac_interface_timers,
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public pdu_process_handler
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{
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public:
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mac();
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bool init(mac_args_t *args, srslte_cell_t *cell, phy_interface_mac *phy, rlc_interface_mac *rlc, rrc_interface_mac *rrc, srslte::log *log_h);
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void stop();
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void start_pcap(srslte::mac_pcap* pcap_);
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/******** Interface from PHY (PHY -> MAC) ****************/
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int sr_detected(uint32_t tti, uint16_t rnti);
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int rach_detected(uint32_t tti, uint32_t preamble_idx, uint32_t time_adv);
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int set_dl_ant_info(uint16_t rnti, LIBLTE_RRC_ANTENNA_INFO_DEDICATED_STRUCT *dl_ant_info);
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int ri_info(uint32_t tti, uint16_t rnti, uint32_t ri_value);
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int pmi_info(uint32_t tti, uint16_t rnti, uint32_t pmi_value);
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int cqi_info(uint32_t tti, uint16_t rnti, uint32_t cqi_value);
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int snr_info(uint32_t tti, uint16_t rnti, float snr);
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int ack_info(uint32_t tti, uint16_t rnti, uint32_t tb_idx, bool ack);
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int crc_info(uint32_t tti, uint16_t rnti, uint32_t nof_bytes, bool crc_res);
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int get_dl_sched(uint32_t tti, dl_sched_t *dl_sched_res);
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int get_ul_sched(uint32_t tti, ul_sched_t *ul_sched_res);
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int get_mch_sched(bool is_mcch, dl_sched_t *dl_sched_res);
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void build_mch_sched(uint32_t tbs);
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void rl_failure(uint16_t rnti);
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void rl_ok(uint16_t rnti);
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void tti_clock();
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/******** Interface from RRC (RRC -> MAC) ****************/
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/* Provides cell configuration including SIB periodicity, etc. */
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int cell_cfg(sched_interface::cell_cfg_t *cell_cfg);
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void reset();
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/* Manages UE scheduling context */
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int ue_cfg(uint16_t rnti, sched_interface::ue_cfg_t *cfg);
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int ue_rem(uint16_t rnti);
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// Indicates that the PHY config dedicated has been enabled or not
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void phy_config_enabled(uint16_t rnti, bool enabled);
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/* Manages UE bearers and associated configuration */
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int bearer_ue_cfg(uint16_t rnti, uint32_t lc_id, sched_interface::ue_bearer_cfg_t *cfg);
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int bearer_ue_rem(uint16_t rnti, uint32_t lc_id);
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int rlc_buffer_state(uint16_t rnti, uint32_t lc_id, uint32_t tx_queue, uint32_t retx_queue);
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bool process_pdus();
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// Interface for upper-layer timers
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srslte::timers::timer* timer_get(uint32_t timer_id);
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void timer_release_id(uint32_t timer_id);
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u_int32_t timer_get_unique_id();
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uint32_t get_current_tti();
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void get_metrics(mac_metrics_t metrics[ENB_METRICS_MAX_USERS]);
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void write_mcch(LIBLTE_RRC_SYS_INFO_BLOCK_TYPE_2_STRUCT *sib2, LIBLTE_RRC_SYS_INFO_BLOCK_TYPE_13_STRUCT *sib13, LIBLTE_RRC_MCCH_MSG_STRUCT *mcch);
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private:
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static const int MAX_LOCATIONS = 20;
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static const uint32_t cfi = 3;
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srslte_dci_location_t locations[MAX_LOCATIONS];
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static const int MAC_PDU_THREAD_PRIO = 60;
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// We use a rwlock in MAC to allow multiple workers to access MAC simultaneously. No conflicts will happen since access for different TTIs
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pthread_rwlock_t rwlock;
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// Interaction with PHY
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phy_interface_mac *phy_h;
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rlc_interface_mac *rlc_h;
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rrc_interface_mac *rrc_h;
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srslte::log *log_h;
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srslte_cell_t cell;
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mac_args_t args;
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uint32_t tti;
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bool started;
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/* Scheduler unit */
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sched scheduler;
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dl_metric_rr sched_metric_dl_rr;
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ul_metric_rr sched_metric_ul_rr;
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sched_interface::cell_cfg_t cell_config;
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sched_interface::dl_pdu_mch_t mch;
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/* Map of active UEs */
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std::map<uint16_t, ue*> ue_db;
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uint16_t last_rnti;
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uint8_t* assemble_rar(sched_interface::dl_sched_rar_grant_t *grants, uint32_t nof_grants, int rar_idx, uint32_t pdu_len);
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uint8_t* assemble_si(uint32_t index);
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const static int rar_payload_len = 128;
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std::vector<srslte::rar_pdu> rar_pdu_msg;
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uint8_t rar_payload[sched_interface::MAX_RAR_LIST][rar_payload_len];
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typedef struct {
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uint32_t preamble_idx;
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uint32_t ta_cmd;
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uint16_t temp_crnti;
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} pending_rar_t;
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const static int MAX_PENDING_RARS = 64;
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pending_rar_t pending_rars[MAX_PENDING_RARS];
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const static int NOF_BCCH_DLSCH_MSG=sched_interface::MAX_SIBS;
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uint8_t bcch_dlsch_payload[sched_interface::MAX_SIB_PAYLOAD_LEN];
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const static int pcch_payload_buffer_len = 1024;
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uint8_t pcch_payload_buffer[pcch_payload_buffer_len];
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srslte_softbuffer_tx_t bcch_softbuffer_tx[NOF_BCCH_DLSCH_MSG];
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srslte_softbuffer_tx_t pcch_softbuffer_tx;
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srslte_softbuffer_tx_t rar_softbuffer_tx;
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const static int mcch_payload_len = 3000; //TODO FIND OUT MAX LENGTH
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int current_mcch_length;
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uint8_t mcch_payload_buffer[mcch_payload_len];
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LIBLTE_RRC_MCCH_MSG_STRUCT mcch;
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LIBLTE_RRC_SYS_INFO_BLOCK_TYPE_2_STRUCT sib2;
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LIBLTE_RRC_SYS_INFO_BLOCK_TYPE_13_STRUCT sib13;
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const static int mtch_payload_len = 10000;
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uint8_t mtch_payload_buffer[mtch_payload_len];
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/* Functions for MAC Timers */
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srslte::timers timers_db;
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void setup_timers();
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// pointer to MAC PCAP object
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srslte::mac_pcap* pcap;
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/* Class to run upper-layer timers with normal priority */
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class timer_thread : public thread {
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public:
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timer_thread(srslte::timers *t) : ttisync(10240),timers(t),running(false) {start();}
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void tti_clock();
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void stop();
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private:
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void run_thread();
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srslte::tti_sync_cv ttisync;
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srslte::timers *timers;
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bool running;
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};
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timer_thread timers_thread;
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/* Class to process MAC PDUs from DEMUX unit */
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class pdu_process : public thread {
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public:
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pdu_process(pdu_process_handler *h);
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void notify();
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void stop();
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private:
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void run_thread();
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bool running;
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bool have_data;
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pthread_mutex_t mutex;
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pthread_cond_t cvar;
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pdu_process_handler *handler;
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};
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pdu_process pdu_process_thread;
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};
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} // namespace srsenb
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#endif // SRSENB_MAC_H
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