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