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123 lines
3.1 KiB
C++
123 lines
3.1 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_MAC_NR_PDU_H
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#define SRSLTE_MAC_NR_PDU_H
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#include "srslte/common/common.h"
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#include <memory>
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#include <stdint.h>
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#include <vector>
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namespace srslte {
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class mac_nr_sch_pdu;
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class mac_nr_sch_subpdu
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{
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public:
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// 3GPP 38.321 v15.3.0 Combined Tables 6.2.1-1, 6.2.1-2
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typedef enum {
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// Values for DL-SCH
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CCCH = 0b000000,
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DRX_CMD = 0b111100,
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TA_CMD = 0b111101,
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CON_RES_ID = 0b111110,
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// Values for UL-SCH
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CRNTI = 0b111010,
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SHORT_TRUNC_BSR = 0b111011,
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LONG_TRUNC_BSR = 0b111100,
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CCCH_SIZE_48 = 0b110100,
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CCCH_SIZE_64 = 0b000000,
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SHORT_BSR = 0b111101,
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LONG_BSR = 0b111110,
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// Common
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PADDING = 0b111111,
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} nr_lcid_sch_t;
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mac_nr_sch_subpdu(mac_nr_sch_pdu* parent_);
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nr_lcid_sch_t get_type();
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bool is_sdu();
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bool is_valid_lcid();
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bool is_var_len_ce();
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bool is_ul_ccch();
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int32_t read_subheader(const uint8_t* ptr);
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uint32_t get_total_length();
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uint32_t get_sdu_length();
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uint32_t get_lcid();
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uint8_t* get_sdu();
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void set_sdu(const uint32_t lcid_, const uint8_t* payload_, const uint32_t len_);
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void set_padding(const uint32_t len_);
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uint32_t write_subpdu(const uint8_t* start_);
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private:
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uint32_t sizeof_ce(uint32_t lcid, bool is_ul);
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// protected:
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uint32_t lcid = 0;
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int header_length = 0;
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int sdu_length = 0;
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bool F_bit = false;
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uint8_t* sdu = nullptr;
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mac_nr_sch_pdu* parent = nullptr;
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};
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class mac_nr_sch_pdu
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{
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public:
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mac_nr_sch_pdu(bool ulsch_ = false) : ulsch(ulsch_) {}
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void pack();
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void unpack(const uint8_t* payload, const uint32_t& len);
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uint32_t get_num_subpdus();
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const mac_nr_sch_subpdu& get_subpdu(const uint32_t& index);
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bool is_ulsch();
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void init_tx(byte_buffer_t* buffer_, uint32_t pdu_len_, bool is_ulsch_ = false);
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uint32_t add_sdu(const uint32_t lcid_, const uint8_t* payload_, const uint32_t len_);
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uint32_t get_remaing_len();
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private:
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uint32_t size_header_sdu(const uint32_t lcid_, const uint32_t nbytes);
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bool ulsch = false;
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std::vector<mac_nr_sch_subpdu> subpdus;
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byte_buffer_t* buffer = nullptr;
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uint32_t pdu_len = 0;
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uint32_t remaining_len = 0;
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};
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} // namespace srslte
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#endif // SRSLTE_MAC_NR_PDU_H
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