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108 lines
3.5 KiB
C++
108 lines
3.5 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 SRSLTE_PDCP_ENTITY_LTE_H
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#define SRSLTE_PDCP_ENTITY_LTE_H
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#include "srslte/common/buffer_pool.h"
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#include "srslte/common/log.h"
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#include "srslte/common/common.h"
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#include "srslte/interfaces/ue_interfaces.h"
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#include "srslte/common/security.h"
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#include "srslte/common/threads.h"
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#include "pdcp_entity_base.h"
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namespace srslte {
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/****************************************************************************
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* Structs and Defines
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* Ref: 3GPP TS 36.323 v10.1.0
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***************************************************************************/
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#define PDCP_CONTROL_MAC_I 0x00000000
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/****************************************************************************
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* LTE PDCP Entity
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* Class for LTE PDCP entities
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***************************************************************************/
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class pdcp_entity_lte final: public pdcp_entity_base
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{
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public:
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pdcp_entity_lte();
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~pdcp_entity_lte();
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void init(srsue::rlc_interface_pdcp* rlc_,
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srsue::rrc_interface_pdcp* rrc_,
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srsue::gw_interface_pdcp* gw_,
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srslte::log* log_,
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uint32_t lcid_,
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srslte_pdcp_config_lte_t cfg_);
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void reset();
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void reestablish();
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bool is_active();
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// GW/RRC interface
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void write_sdu(unique_byte_buffer_t sdu, bool blocking);
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uint32_t get_dl_count();
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uint32_t get_ul_count();
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// RLC interface
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void write_pdu(unique_byte_buffer_t pdu);
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private:
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srsue::rlc_interface_pdcp* rlc = nullptr;
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srsue::rrc_interface_pdcp* rrc = nullptr;
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srsue::gw_interface_pdcp* gw = nullptr;
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srslte_pdcp_config_lte_t cfg = {};
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uint8_t sn_len_bytes = 0;
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uint32_t rx_count = 0;
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uint32_t tx_count = 0;
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uint32_t rx_hfn = 0;
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uint32_t next_pdcp_rx_sn = 0;
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uint32_t reordering_window = 0;
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uint32_t last_submitted_pdcp_rx_sn = 0;
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uint32_t maximum_pdcp_sn = 0;
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void handle_um_drb_pdu(const srslte::unique_byte_buffer_t& pdu);
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void handle_am_drb_pdu(const srslte::unique_byte_buffer_t& pdu);
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};
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/****************************************************************************
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* Pack/Unpack helper functions
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* Ref: 3GPP TS 36.323 v10.1.0
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***************************************************************************/
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void pdcp_pack_control_pdu(uint32_t sn, byte_buffer_t *sdu);
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void pdcp_unpack_control_pdu(byte_buffer_t *sdu, uint32_t *sn);
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void pdcp_pack_data_pdu_short_sn(uint32_t sn, byte_buffer_t *sdu);
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void pdcp_unpack_data_pdu_short_sn(byte_buffer_t *sdu, uint32_t *sn);
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void pdcp_pack_data_pdu_long_sn(uint32_t sn, byte_buffer_t *sdu);
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void pdcp_unpack_data_pdu_long_sn(byte_buffer_t *sdu, uint32_t *sn);
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} // namespace srslte
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#endif // SRSLTE_PDCP_ENTITY_LTE_H
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