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C++

/**
* Copyright 2013-2022 Software Radio Systems Limited
*
* This file is part of srsRAN.
*
* srsRAN is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsRAN is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#ifndef SRSRAN_RLC_TM_H
#define SRSRAN_RLC_TM_H
#include "srsran/common/buffer_pool.h"
#include "srsran/common/common.h"
#include "srsran/rlc/rlc_common.h"
#include "srsran/upper/byte_buffer_queue.h"
namespace srsue {
class pdcp_interface_rlc;
class rrc_interface_rlc;
} // namespace srsue
namespace srsran {
class rlc_tm final : public rlc_common
{
public:
rlc_tm(srslog::basic_logger& logger,
uint32_t lcid_,
srsue::pdcp_interface_rlc* pdcp_,
srsue::rrc_interface_rlc* rrc_);
~rlc_tm() override;
bool configure(const rlc_config_t& cnfg) override;
void stop() override;
void reestablish() override;
void empty_queue() override;
rlc_mode_t get_mode() override;
uint32_t get_lcid() override;
rlc_bearer_metrics_t get_metrics() override;
void reset_metrics() override;
// PDCP interface
void write_sdu(unique_byte_buffer_t sdu) override;
void discard_sdu(uint32_t discard_sn) override;
bool sdu_queue_is_full() override;
// MAC interface
bool has_data() override;
uint32_t get_buffer_state() override;
void get_buffer_state(uint32_t& newtx_queue, uint32_t& prio_tx_queue) override;
uint32_t read_pdu(uint8_t* payload, uint32_t nof_bytes) override;
void write_pdu(uint8_t* payload, uint32_t nof_bytes) override;
void set_bsr_callback(bsr_callback_t callback) override;
private:
byte_buffer_pool* pool = nullptr;
uint32_t lcid = 0;
srsue::pdcp_interface_rlc* pdcp = nullptr;
srsue::rrc_interface_rlc* rrc = nullptr;
std::mutex bsr_callback_mutex;
bsr_callback_t bsr_callback;
std::atomic<bool> tx_enabled = {true};
std::mutex metrics_mutex;
rlc_bearer_metrics_t metrics = {};
// Thread-safe queues for MAC messages
byte_buffer_queue ul_queue;
};
} // namespace srsran
#endif // SRSRAN_RLC_TM_H