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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#ifndef SRSRAN_RLC_AM_NR_PACKING_H
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#define SRSRAN_RLC_AM_NR_PACKING_H
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#include "srsran/rlc/rlc_am_base.h"
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namespace srsran {
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///< AM NR PDU header
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typedef struct {
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rlc_dc_field_t dc; ///< Data/Control (D/C) field
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uint8_t p; ///< Polling bit
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rlc_nr_si_field_t si; ///< Segmentation info
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rlc_am_nr_sn_size_t sn_size; ///< Sequence number size (12 or 18 bits)
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uint32_t sn; ///< Sequence number
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uint16_t so; ///< Sequence offset
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} rlc_am_nr_pdu_header_t;
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struct rlc_amd_pdu_nr_t {
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rlc_am_nr_pdu_header_t header;
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unique_byte_buffer_t buf;
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};
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///< AM NR Status PDU header (perhaps merge with LTE version)
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typedef struct {
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rlc_am_nr_control_pdu_type_t cpt;
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uint32_t ack_sn; ///< SN of the next not received RLC Data PDU
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uint16_t N_nack; ///< number of NACKs
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uint8_t nack_range; ///< number of consecutively lost RLC SDUs starting from and including NACK_SN
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rlc_status_nack_t nacks[RLC_AM_WINDOW_SIZE];
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} rlc_am_nr_status_pdu_t;
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/****************************************************************************
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* Header pack/unpack helper functions for NR
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* Ref: 3GPP TS 38.322 v15.3.0 Section 6.2.2.3
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***************************************************************************/
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uint32_t rlc_am_nr_read_data_pdu_header(const byte_buffer_t* pdu,
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const rlc_am_nr_sn_size_t sn_size,
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rlc_am_nr_pdu_header_t* header);
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uint32_t rlc_am_nr_read_data_pdu_header(const uint8_t* payload,
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const uint32_t nof_bytes,
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const rlc_am_nr_sn_size_t sn_size,
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rlc_am_nr_pdu_header_t* header);
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uint32_t rlc_am_nr_write_data_pdu_header(const rlc_am_nr_pdu_header_t& header, byte_buffer_t* pdu);
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uint32_t rlc_am_nr_packed_length(const rlc_am_nr_pdu_header_t& header);
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uint32_t
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rlc_am_nr_read_status_pdu(const byte_buffer_t* pdu, const rlc_am_nr_sn_size_t sn_size, rlc_am_nr_status_pdu_t* status);
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uint32_t rlc_am_nr_read_status_pdu(const uint8_t* payload,
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const uint32_t nof_bytes,
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const rlc_am_nr_sn_size_t sn_size,
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rlc_am_nr_status_pdu_t* status);
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int32_t rlc_am_nr_write_status_pdu(const rlc_am_nr_status_pdu_t& status_pdu,
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const rlc_am_nr_sn_size_t sn_size,
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byte_buffer_t* pdu);
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} // namespace srsran
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#endif // SRSRAN_RLC_AM_NR_PACKING_H
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