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114 lines
3.8 KiB
C++
114 lines
3.8 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 SRSLTE_RLC_H
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#define SRSLTE_RLC_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/log.h"
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#include "srslte/interfaces/ue_interfaces.h"
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#include "srslte/upper/rlc_common.h"
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#include "srslte/upper/rlc_metrics.h"
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namespace srslte {
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/****************************************************************************
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* RLC Layer
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* Ref: 3GPP TS 36.322 v10.0.0
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* Single interface for RLC layer - contains separate RLC entities for
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* each bearer.
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***************************************************************************/
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class rlc : public srsue::rlc_interface_mac, public srsue::rlc_interface_pdcp, public srsue::rlc_interface_rrc
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{
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public:
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rlc(log* rlc_log_);
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virtual ~rlc();
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void init(srsue::pdcp_interface_rlc* pdcp_,
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srsue::rrc_interface_rlc* rrc_,
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srslte::timer_handler* timers_,
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uint32_t lcid_);
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void stop();
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void get_metrics(rlc_metrics_t& m);
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// PDCP interface
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void write_sdu(uint32_t lcid, unique_byte_buffer_t sdu, bool blocking = true);
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void write_sdu_mch(uint32_t lcid, unique_byte_buffer_t sdu);
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bool rb_is_um(uint32_t lcid);
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void discard_sdu(uint32_t lcid, uint32_t discard_sn);
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// MAC interface
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bool has_data(const uint32_t lcid);
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bool is_suspended(const uint32_t lcid);
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uint32_t get_buffer_state(const uint32_t lcid);
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uint32_t get_total_mch_buffer_state(uint32_t lcid);
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int read_pdu(uint32_t lcid, uint8_t* payload, uint32_t nof_bytes);
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int read_pdu_mch(uint32_t lcid, uint8_t* payload, uint32_t nof_bytes);
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int get_increment_sequence_num();
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void write_pdu(uint32_t lcid, uint8_t* payload, uint32_t nof_bytes);
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void write_pdu_bcch_bch(srslte::unique_byte_buffer_t pdu);
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void write_pdu_bcch_dlsch(uint8_t* payload, uint32_t nof_bytes);
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void write_pdu_pcch(srslte::unique_byte_buffer_t pdu);
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void write_pdu_mch(uint32_t lcid, uint8_t* payload, uint32_t nof_bytes);
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// RRC interface
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void reestablish();
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void reestablish(uint32_t lcid);
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void reset();
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void empty_queue();
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void add_bearer(uint32_t lcid, rlc_config_t cnfg);
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void add_bearer_mrb(uint32_t lcid);
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void del_bearer(uint32_t lcid);
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void del_bearer_mrb(uint32_t lcid);
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void suspend_bearer(uint32_t lcid);
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void resume_bearer(uint32_t lcid);
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void change_lcid(uint32_t old_lcid, uint32_t new_lcid);
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bool has_bearer(uint32_t lcid);
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private:
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void reset_metrics();
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byte_buffer_pool* pool = nullptr;
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srslte::log* rlc_log = nullptr;
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srsue::pdcp_interface_rlc* pdcp = nullptr;
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srsue::rrc_interface_rlc* rrc = nullptr;
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srslte::timer_handler* timers = nullptr;
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typedef std::map<uint16_t, rlc_common*> rlc_map_t;
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typedef std::pair<uint16_t, rlc_common*> rlc_map_pair_t;
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rlc_map_t rlc_array, rlc_array_mrb;
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pthread_rwlock_t rwlock;
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uint32_t default_lcid = 0;
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// Timer needed for metrics calculation
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struct timeval metrics_time[3] = {};
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bool valid_lcid(uint32_t lcid);
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bool valid_lcid_mrb(uint32_t lcid);
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};
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} // namespace srslte
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#endif // SRSLTE_RLC_H
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