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122 lines
3.4 KiB
C++
122 lines
3.4 KiB
C++
/*
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* Copyright 2013-2019 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 SRSUE_PROC_BSR_H
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#define SRSUE_PROC_BSR_H
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#include <map>
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#include <stdint.h>
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#include "srslte/common/log.h"
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#include "srslte/interfaces/ue_interfaces.h"
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#include "srslte/common/timers.h"
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/* Buffer status report procedure */
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namespace srsue {
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// BSR interface for MUX
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class bsr_interface_mux
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{
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public:
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typedef enum { LONG_BSR, SHORT_BSR, TRUNC_BSR } bsr_format_t;
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typedef struct {
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bsr_format_t format;
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uint32_t buff_size[4];
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} bsr_t;
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/* MUX calls BSR to check if it can fit a BSR into PDU */
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virtual bool need_to_send_bsr_on_ul_grant(uint32_t grant_size, bsr_t* bsr) = 0;
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/* MUX calls BSR to let it generate a padding BSR if there is space in PDU */
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virtual bool generate_padding_bsr(uint32_t nof_padding_bytes, bsr_t* bsr) = 0;
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};
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class bsr_proc : public srslte::timer_callback, public bsr_interface_mux
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{
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public:
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bsr_proc();
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void init(rlc_interface_mac* rlc, srslte::log* log_h, srslte::timers* timers_db);
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void step(uint32_t tti);
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void reset();
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void set_config(srslte::bsr_cfg_t& bsr_cfg);
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void setup_lcid(uint32_t lcid, uint32_t lcg, uint32_t priority);
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void timer_expired(uint32_t timer_id);
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uint32_t get_buffer_state();
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bool need_to_send_bsr_on_ul_grant(uint32_t grant_size, bsr_t *bsr);
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bool generate_padding_bsr(uint32_t nof_padding_bytes, bsr_t *bsr);
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bool need_to_send_sr(uint32_t tti);
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bool need_to_reset_sr();
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private:
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const static int QUEUE_STATUS_PERIOD_MS = 1000;
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pthread_mutex_t mutex;
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bool reset_sr;
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srslte::timers *timers_db;
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srslte::log *log_h;
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rlc_interface_mac *rlc;
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srslte::bsr_cfg_t bsr_cfg;
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bool initiated;
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const static int NOF_LCG = 4;
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typedef struct {
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int priority;
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uint32_t old_buffer;
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uint32_t new_buffer;
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} lcid_t;
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std::map<uint32_t, lcid_t> lcgs[NOF_LCG]; // groups LCID in LCG
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uint32_t find_max_priority_lcg_with_data();
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typedef enum {NONE, REGULAR, PADDING, PERIODIC} triggered_bsr_type_t;
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triggered_bsr_type_t triggered_bsr_type;
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bool sr_is_sent;
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uint32_t last_print;
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uint32_t current_tti;
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uint32_t trigger_tti;
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void set_trigger(triggered_bsr_type_t new_trigger);
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void update_new_data();
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void update_buffer_state();
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bool check_highest_channel();
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bool check_new_data();
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bool check_any_channel();
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uint32_t get_buffer_state_lcg(uint32_t lcg);
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bool generate_bsr(bsr_t* bsr, uint32_t nof_padding_bytes);
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char* bsr_type_tostring(triggered_bsr_type_t type);
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char* bsr_format_tostring(bsr_format_t format);
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uint32_t timer_periodic_id;
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uint32_t timer_retx_id;
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};
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} // namespace srsue
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#endif // SRSUE_PROC_BSR_H
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