mirror of https://github.com/PentHertz/srsLTE.git
174 lines
4.7 KiB
C++
174 lines
4.7 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2020 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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/******************************************************************************
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* File: pdcp_config.h
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* Description: Structures used for configuration of the PDCP entities
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*****************************************************************************/
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#ifndef SRSLTE_PDCP_INTERFACE_TYPES_H
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#define SRSLTE_PDCP_INTERFACE_TYPES_H
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#include "srslte/common/security.h"
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#include <math.h>
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#include <stdint.h>
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namespace srslte {
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/***************************
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* PDCP Config
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**************************/
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// LTE and NR common config
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const uint8_t PDCP_SN_LEN_5 = 5;
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const uint8_t PDCP_SN_LEN_7 = 7;
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const uint8_t PDCP_SN_LEN_15 = 15;
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const uint8_t PDCP_SN_LEN_12 = 12;
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const uint8_t PDCP_SN_LEN_18 = 18;
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typedef enum { PDCP_RB_IS_SRB, PDCP_RB_IS_DRB } pdcp_rb_type_t;
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enum pdcp_dc_field_t {
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PDCP_DC_FIELD_CONTROL_PDU = 0,
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PDCP_DC_FIELD_DATA_PDU,
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PDCP_DC_FIELD_N_ITEMS,
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};
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static const char* pdcp_dc_field_text[PDCP_DC_FIELD_N_ITEMS] = {"Control PDU", "Data PDU"};
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enum pdcp_pdu_type_t {
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PDCP_PDU_TYPE_STATUS_REPORT = 0,
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PDCP_PDU_TYPE_INTERSPERSED_ROHC_FEEDBACK_PACKET,
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PDCP_PDU_TYPE_LWA_STATUS_REPORT,
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PDCP_PDU_TYPE_LWA_END_MARKER_PACKET,
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PDCP_PDU_TYPE_N_ITEMS,
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};
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static const char* pdcp_pdu_type_text[PDCP_PDU_TYPE_N_ITEMS] = {"PDCP Report PDU",
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"Interspersed ROCH Feedback Packet",
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"LWA Status Report",
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"LWA End-marker Packet"};
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// Taken from PDCP-Config (TS 38.331 version 15.2.1)
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enum class pdcp_t_reordering_t {
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ms0 = 0,
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ms1 = 1,
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ms2 = 2,
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ms4 = 4,
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ms5 = 5,
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ms8 = 8,
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ms10 = 10,
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ms15 = 15,
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ms20 = 20,
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ms30 = 30,
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ms40 = 40,
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ms50 = 50,
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ms60 = 60,
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ms80 = 80,
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ms100 = 100,
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ms120 = 120,
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ms140 = 140,
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ms160 = 160,
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ms180 = 180,
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ms200 = 200,
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ms220 = 220,
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ms240 = 240,
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ms260 = 260,
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ms280 = 280,
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ms300 = 300,
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ms500 = 500,
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ms750 = 750,
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ms1000 = 1000,
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ms1250 = 1250,
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ms1500 = 1500,
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ms1750 = 1750,
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ms2000 = 2000,
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ms2250 = 2250,
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ms2500 = 2500,
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ms2750 = 2750,
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ms3000 = 3000
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};
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// Taken from PDCP-Config (TS 38.331 version 15.2.1)
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enum class pdcp_discard_timer_t {
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ms10 = 10,
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ms20 = 20,
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ms30 = 30,
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ms40 = 40,
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ms50 = 50,
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ms60 = 60,
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ms75 = 75,
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ms100 = 100,
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ms150 = 150,
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ms200 = 200,
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ms250 = 250,
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ms300 = 300,
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ms500 = 500,
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ms750 = 750,
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ms1500 = 1500,
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infinity = 0
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};
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class pdcp_config_t
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{
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public:
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pdcp_config_t(uint8_t bearer_id_,
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pdcp_rb_type_t rb_type_,
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security_direction_t tx_direction_,
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security_direction_t rx_direction_,
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uint8_t sn_len_,
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pdcp_t_reordering_t t_reordering_,
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pdcp_discard_timer_t discard_timer_,
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bool status_report_required_) :
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bearer_id(bearer_id_),
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rb_type(rb_type_),
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tx_direction(tx_direction_),
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rx_direction(rx_direction_),
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sn_len(sn_len_),
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t_reordering(t_reordering_),
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discard_timer(discard_timer_),
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status_report_required(status_report_required_)
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{
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hdr_len_bytes = ceilf((float)sn_len / 8);
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}
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uint8_t bearer_id = 1;
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pdcp_rb_type_t rb_type = PDCP_RB_IS_DRB;
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security_direction_t tx_direction = SECURITY_DIRECTION_DOWNLINK;
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security_direction_t rx_direction = SECURITY_DIRECTION_UPLINK;
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uint8_t sn_len = PDCP_SN_LEN_12;
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uint8_t hdr_len_bytes = 2;
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pdcp_t_reordering_t t_reordering = pdcp_t_reordering_t::ms500;
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pdcp_discard_timer_t discard_timer = pdcp_discard_timer_t::infinity;
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bool status_report_required = false;
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// TODO: Support the following configurations
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// bool do_rohc;
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};
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// Specifies in which direction security (integrity and ciphering) are enabled for PDCP
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enum srslte_direction_t { DIRECTION_NONE = 0, DIRECTION_TX, DIRECTION_RX, DIRECTION_TXRX, DIRECTION_N_ITEMS };
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static const char* srslte_direction_text[DIRECTION_N_ITEMS] = {"none", "tx", "rx", "tx/rx"};
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// PDCP LTE internal state variables, as defined in TS 36 323, section 7.1
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struct pdcp_lte_state_t {
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uint32_t next_pdcp_tx_sn;
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uint32_t tx_hfn;
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uint32_t rx_hfn;
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uint32_t next_pdcp_rx_sn;
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uint32_t last_submitted_pdcp_rx_sn;
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uint32_t reordering_pdcp_rx_count;
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};
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} // namespace srslte
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#endif // SRSLTE_PDCP_INTERFACE_TYPES_H
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