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srsRAN_4G/lib/include/srslte/interfaces/ue_interfaces.h

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/*
* Copyright 2013-2019 Software Radio Systems Limited
*
* This file is part of srsLTE.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
/******************************************************************************
* File: interfaces.h
* Description: Abstract base class interfaces provided by layers
* to other layers.
*****************************************************************************/
#ifndef SRSLTE_UE_INTERFACES_H
#define SRSLTE_UE_INTERFACES_H
#include <string>
#include "rrc_interface_types.h"
#include "srslte/asn1/liblte_mme.h"
#include "srslte/common/common.h"
#include "srslte/common/interfaces_common.h"
#include "srslte/common/security.h"
#include "srslte/common/stack_procedure.h"
#include "srslte/interfaces/rrc_interface_types.h"
#include "srslte/phy/channel/channel.h"
#include "srslte/phy/rf/rf.h"
namespace srsue {
typedef enum { AUTH_OK, AUTH_FAILED, AUTH_SYNCH_FAILURE } auth_result_t;
// USIM interface for NAS
class usim_interface_nas
{
public:
virtual std::string get_imsi_str() = 0;
virtual std::string get_imei_str() = 0;
virtual bool get_imsi_vec(uint8_t* imsi_, uint32_t n) = 0;
virtual bool get_imei_vec(uint8_t* imei_, uint32_t n) = 0;
virtual bool get_home_plmn_id(srslte::plmn_id_t* home_plmn_id) = 0;
virtual auth_result_t generate_authentication_response(uint8_t* rand,
uint8_t* autn_enb,
uint16_t mcc,
uint16_t mnc,
uint8_t* res,
int* res_len,
uint8_t* k_asme) = 0;
virtual void generate_nas_keys(uint8_t* k_asme,
uint8_t* k_nas_enc,
uint8_t* k_nas_int,
srslte::CIPHERING_ALGORITHM_ID_ENUM cipher_algo,
srslte::INTEGRITY_ALGORITHM_ID_ENUM integ_algo) = 0;
};
// USIM interface for RRC
class usim_interface_rrc
{
public:
virtual void generate_as_keys(uint8_t* k_asme,
uint32_t count_ul,
uint8_t* k_rrc_enc,
uint8_t* k_rrc_int,
uint8_t* k_up_enc,
uint8_t* k_up_int,
srslte::CIPHERING_ALGORITHM_ID_ENUM cipher_algo,
srslte::INTEGRITY_ALGORITHM_ID_ENUM integ_algo) = 0;
virtual void generate_as_keys_ho(uint32_t pci,
uint32_t earfcn,
int ncc,
uint8_t* k_rrc_enc,
uint8_t* k_rrc_int,
uint8_t* k_up_enc,
uint8_t* k_up_int,
srslte::CIPHERING_ALGORITHM_ID_ENUM cipher_algo,
srslte::INTEGRITY_ALGORITHM_ID_ENUM integ_algo) = 0;
};
// GW interface for NAS
class gw_interface_nas
{
public:
virtual int setup_if_addr(uint32_t lcid, uint8_t pdn_type, uint32_t ip_addr, uint8_t* ipv6_if_id, char* err_str) = 0;
virtual int apply_traffic_flow_template(const uint8_t& eps_bearer_id,
const uint8_t& lcid,
const LIBLTE_MME_TRAFFIC_FLOW_TEMPLATE_STRUCT* tft) = 0;
};
// GW interface for RRC
class gw_interface_rrc
{
public:
virtual void add_mch_port(uint32_t lcid, uint32_t port) = 0;
};
// GW interface for PDCP
class gw_interface_pdcp
{
public:
virtual void write_pdu(uint32_t lcid, srslte::unique_byte_buffer_t pdu) = 0;
virtual void write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t pdu) = 0;
};
// RRC interface for MAC
class rrc_interface_mac_common
{
public:
virtual void ra_problem() = 0;
};
class rrc_interface_mac : public rrc_interface_mac_common
{
public:
virtual void ho_ra_completed(bool ra_successful) = 0;
virtual void release_pucch_srs() = 0;
};
// RRC interface for PHY
class rrc_interface_phy_lte
{
public:
virtual void in_sync() = 0;
virtual void out_of_sync() = 0;
virtual void new_phy_meas(float rsrp, float rsrq, uint32_t tti, int earfcn = -1, int pci = -1) = 0;
};
// RRC interface for NAS
class rrc_interface_nas
{
public:
typedef struct {
srslte::plmn_id_t plmn_id;
uint16_t tac;
} found_plmn_t;
const static int MAX_FOUND_PLMNS = 16;
virtual void write_sdu(srslte::unique_byte_buffer_t sdu) = 0;
virtual uint16_t get_mcc() = 0;
virtual uint16_t get_mnc() = 0;
virtual void enable_capabilities() = 0;
virtual bool plmn_search() = 0;
virtual void plmn_select(srslte::plmn_id_t plmn_id) = 0;
virtual bool connection_request(srslte::establishment_cause_t cause,
srslte::unique_byte_buffer_t dedicatedInfoNAS) = 0;
virtual void set_ue_identity(srslte::s_tmsi_t s_tmsi) = 0;
virtual bool is_connected() = 0;
virtual void paging_completed(bool outcome) = 0;
virtual std::string get_rb_name(uint32_t lcid) = 0;
virtual uint32_t get_lcid_for_eps_bearer(const uint32_t& eps_bearer_id) = 0;
};
// RRC interface for PDCP
class rrc_interface_pdcp
{
public:
virtual void write_pdu(uint32_t lcid, srslte::unique_byte_buffer_t pdu) = 0;
virtual void write_pdu_bcch_bch(srslte::unique_byte_buffer_t pdu) = 0;
virtual void write_pdu_bcch_dlsch(srslte::unique_byte_buffer_t pdu) = 0;
virtual void write_pdu_pcch(srslte::unique_byte_buffer_t pdu) = 0;
virtual void write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t pdu) = 0;
virtual std::string get_rb_name(uint32_t lcid) = 0;
};
// RRC interface for RLC
class rrc_interface_rlc
{
public:
virtual void max_retx_attempted() = 0;
virtual std::string get_rb_name(uint32_t lcid) = 0;
virtual void write_pdu(uint32_t lcid, srslte::unique_byte_buffer_t pdu) = 0;
};
// NAS interface for RRC
class nas_interface_rrc
{
public:
typedef enum { BARRING_NONE = 0, BARRING_MO_DATA, BARRING_MO_SIGNALLING, BARRING_MT, BARRING_ALL } barring_t;
virtual void left_rrc_connected() = 0;
virtual void set_barring(barring_t barring) = 0;
virtual bool paging(srslte::s_tmsi_t* ue_identity) = 0;
virtual bool is_attached() = 0;
virtual void write_pdu(uint32_t lcid, srslte::unique_byte_buffer_t pdu) = 0;
virtual uint32_t get_k_enb_count() = 0;
virtual bool get_k_asme(uint8_t* k_asme_, uint32_t n) = 0;
virtual uint32_t get_ipv4_addr() = 0;
virtual bool get_ipv6_addr(uint8_t* ipv6_addr) = 0;
virtual void
plmn_search_completed(const rrc_interface_nas::found_plmn_t found_plmns[rrc_interface_nas::MAX_FOUND_PLMNS],
int nof_plmns) = 0;
virtual bool connection_request_completed(bool outcome) = 0;
virtual void run_tti(uint32_t tti) = 0;
};
// NAS interface for UE
class nas_interface_ue
{
public:
virtual void start_attach_request(srslte::proc_state_t* proc_result, srslte::establishment_cause_t cause_) = 0;
virtual bool detach_request(const bool switch_off) = 0;
};
// PDCP interface for RRC
class pdcp_interface_rrc
{
public:
virtual void reestablish() = 0;
virtual void reestablish(uint32_t lcid) = 0;
virtual void reset() = 0;
virtual void write_sdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu, bool blocking = false) = 0;
virtual void add_bearer(uint32_t lcid, srslte::pdcp_config_t cnfg) = 0;
virtual void change_lcid(uint32_t old_lcid, uint32_t new_lcid) = 0;
virtual void config_security(uint32_t lcid,
uint8_t* k_rrc_enc_,
uint8_t* k_rrc_int_,
uint8_t* k_up_enc_,
srslte::CIPHERING_ALGORITHM_ID_ENUM cipher_algo_,
srslte::INTEGRITY_ALGORITHM_ID_ENUM integ_algo_) = 0;
virtual void config_security_all(uint8_t* k_rrc_enc_,
uint8_t* k_rrc_int_,
uint8_t* k_up_enc_,
srslte::CIPHERING_ALGORITHM_ID_ENUM cipher_algo_,
srslte::INTEGRITY_ALGORITHM_ID_ENUM integ_algo_) = 0;
virtual void enable_integrity(uint32_t lcid) = 0;
virtual void enable_encryption(uint32_t lcid) = 0;
};
// PDCP interface for RLC
class pdcp_interface_rlc
{
public:
/* RLC calls PDCP to push a PDCP PDU. */
virtual void write_pdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu) = 0;
virtual void write_pdu_bcch_bch(srslte::unique_byte_buffer_t sdu) = 0;
virtual void write_pdu_bcch_dlsch(srslte::unique_byte_buffer_t sdu) = 0;
virtual void write_pdu_pcch(srslte::unique_byte_buffer_t sdu) = 0;
virtual void write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t sdu) = 0;
};
class pdcp_interface_gw
{
public:
virtual void write_sdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu, bool blocking) = 0;
virtual bool is_lcid_enabled(uint32_t lcid) = 0;
};
// RLC interface for RRC
class rlc_interface_rrc
{
public:
virtual void reset() = 0;
virtual void reestablish() = 0;
virtual void reestablish(uint32_t lcid) = 0;
virtual void add_bearer(uint32_t lcid, srslte::rlc_config_t cnfg) = 0;
virtual void add_bearer_mrb(uint32_t lcid) = 0;
virtual void del_bearer(uint32_t lcid) = 0;
virtual void suspend_bearer(uint32_t lcid) = 0;
virtual void resume_bearer(uint32_t lcid) = 0;
virtual void change_lcid(uint32_t old_lcid, uint32_t new_lcid) = 0;
virtual bool has_bearer(uint32_t lcid) = 0;
virtual bool has_data(const uint32_t lcid) = 0;
virtual void write_sdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu, bool blocking = true) = 0;
};
// RLC interface for PDCP
class rlc_interface_pdcp
{
public:
/* PDCP calls RLC to push an RLC SDU. SDU gets placed into the RLC buffer and MAC pulls
* RLC PDUs according to TB size. */
virtual void write_sdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu, bool blocking = true) = 0;
virtual void discard_sdu(uint32_t lcid, uint32_t discard_sn) = 0;
virtual bool rb_is_um(uint32_t lcid) = 0;
};
// RLC interface for MAC
class rlc_interface_mac : public srslte::read_pdu_interface
{
public:
/* MAC calls has_data() to query whether a logical channel has data to transmit (without
* knowing how much. This function should return quickly. */
virtual bool has_data(const uint32_t lcid) = 0;
/* MAC calls RLC to get the buffer state for a logical channel. */
virtual uint32_t get_buffer_state(const uint32_t lcid) = 0;
const static int MAX_PDU_SEGMENTS = 20;
/* MAC calls RLC to get RLC segment of nof_bytes length.
* Segmentation happens in this function. RLC PDU is stored in payload. */
virtual int read_pdu(uint32_t lcid, uint8_t* payload, uint32_t nof_bytes) = 0;
/* MAC calls RLC to push an RLC PDU. This function is called from an independent MAC thread.
* PDU gets placed into the buffer and higher layer thread gets notified. */
virtual void write_pdu(uint32_t lcid, uint8_t* payload, uint32_t nof_bytes) = 0;
virtual void write_pdu_bcch_bch(uint8_t* payload, uint32_t nof_bytes) = 0;
virtual void write_pdu_bcch_dlsch(uint8_t* payload, uint32_t nof_bytes) = 0;
virtual void write_pdu_pcch(uint8_t* payload, uint32_t nof_bytes) = 0;
virtual void write_pdu_mch(uint32_t lcid, uint8_t* payload, uint32_t nof_bytes) = 0;
};
/** MAC interface
*
*/
/* Interface PHY -> MAC */
class mac_interface_phy_lte
{
public:
typedef struct {
uint32_t nof_mbsfn_services;
} mac_phy_cfg_mbsfn_t;
typedef struct {
uint32_t tbs;
bool ndi;
bool ndi_present;
int rv;
} mac_tb_t;
typedef struct {
mac_tb_t tb[SRSLTE_MAX_TB];
uint32_t pid;
uint16_t rnti;
bool is_sps_release;
uint32_t tti;
} mac_grant_dl_t;
typedef struct {
mac_tb_t tb;
uint32_t pid;
uint16_t rnti;
bool phich_available;
bool hi_value;
uint32_t tti_tx;
} mac_grant_ul_t;
typedef struct {
bool enabled;
uint32_t rv;
uint8_t* payload;
union {
srslte_softbuffer_rx_t* rx;
srslte_softbuffer_tx_t* tx;
} softbuffer;
} tb_action_t;
typedef struct {
tb_action_t tb[SRSLTE_MAX_TB];
bool generate_ack;
} tb_action_dl_t;
typedef struct {
tb_action_t tb;
uint32_t current_tx_nb;
bool expect_ack;
} tb_action_ul_t;
/* Query the MAC for the current RNTI to look for
*/
virtual uint16_t get_dl_sched_rnti(uint32_t tti) = 0;
virtual uint16_t get_ul_sched_rnti(uint32_t tti) = 0;
/* Indicate reception of UL dci.
* payload_ptr points to memory where MAC PDU must be written by MAC layer */
virtual void new_grant_ul(uint32_t cc_idx, mac_grant_ul_t grant, tb_action_ul_t* action) = 0;
/* Indicate reception of DL dci. */
virtual void new_grant_dl(uint32_t cc_idx, mac_grant_dl_t grant, tb_action_dl_t* action) = 0;
/* Indicate successful decoding of PDSCH AND PCH TB. */
virtual void tb_decoded(uint32_t cc_idx, mac_grant_dl_t grant, bool ack[SRSLTE_MAX_CODEWORDS]) = 0;
/* Indicate successful decoding of BCH TB through PBCH */
virtual void bch_decoded_ok(uint8_t* payload, uint32_t len) = 0;
/* Indicate successful decoding of MCH TB through PMCH */
virtual void mch_decoded(uint32_t len, bool crc) = 0;
/* Obtain action for a new MCH subframe. */
virtual void new_mch_dl(srslte_pdsch_grant_t phy_grant, tb_action_dl_t* action) = 0;
/* Communicate the number of mbsfn services available */
virtual void set_mbsfn_config(uint32_t nof_mbsfn_services) = 0;
/* Indicate new TTI */
virtual void run_tti(const uint32_t tti) = 0;
};
/* Interface RRC -> MAC shared between different RATs */
class mac_interface_rrc_common
{
public:
// Class to handle UE specific RNTIs between RRC and MAC
typedef struct {
uint16_t crnti;
uint16_t rar_rnti;
uint16_t temp_rnti;
uint16_t tpc_rnti;
uint16_t sps_rnti;
uint64_t contention_id;
} ue_rnti_t;
};
/* Interface RRC -> MAC */
class mac_interface_rrc : public mac_interface_rrc_common
{
public:
virtual void clear_rntis() = 0;
/* Instructs the MAC to start receiving BCCH */
virtual void bcch_start_rx(int si_window_start, int si_window_length) = 0;
virtual void bcch_stop_rx() = 0;
/* Instructs the MAC to start receiving PCCH */
virtual void pcch_start_rx() = 0;
/* RRC configures a logical channel */
virtual void setup_lcid(uint32_t lcid, uint32_t lcg, uint32_t priority, int PBR_x_tti, uint32_t BSD) = 0;
/* Instructs the MAC to start receiving an MCH */
virtual void mch_start_rx(uint32_t lcid) = 0;
virtual uint32_t get_current_tti() = 0;
virtual void set_config(srslte::mac_cfg_t& mac_cfg) = 0;
virtual void get_rntis(ue_rnti_t* rntis) = 0;
virtual void set_contention_id(uint64_t uecri) = 0;
virtual void set_ho_rnti(uint16_t crnti, uint16_t target_pci) = 0;
virtual void start_noncont_ho(uint32_t preamble_index, uint32_t prach_mask) = 0;
virtual void start_cont_ho() = 0;
virtual void reconfiguration(const uint32_t& cc_idx, const bool& enable) = 0;
virtual void reset() = 0;
virtual void wait_uplink() = 0;
virtual void set_enable_ra_proc(bool en) = 0;
};
/** PHY interface
*
*/
typedef struct {
uint32_t radio_idx;
uint32_t channel_idx;
} carrier_map_t;
typedef struct {
std::string type = "lte";
srslte::phy_log_args_t log = {
.phy_level = "none",
.phy_lib_level = "none",
.phy_hex_limit = -1,
};
std::string dl_earfcn = "3400"; // comma-separated list of EARFCNs
std::vector<uint32_t> earfcn_list = {3400}; // vectorized version of dl_earfcn that gets populated during init
float dl_freq = -1.0f;
float ul_freq = -1.0f;
bool ul_pwr_ctrl_en = false;
float prach_gain = -1;
int pdsch_max_its = 8;
int nof_phy_threads = 3;
int worker_cpu_mask = -1;
int sync_cpu_affinity = -1;
uint32_t nof_carriers = 1;
uint32_t nof_radios = 1;
uint32_t nof_rx_ant = 1;
uint32_t nof_rf_channels = 1;
carrier_map_t carrier_map[SRSLTE_MAX_CARRIERS] = {};
std::string equalizer_mode = "mmse";
int cqi_max = 15;
int cqi_fixed = -1;
float snr_ema_coeff = 0.1f;
std::string snr_estim_alg = "refs";
bool agc_enable = true;
bool cfo_is_doppler = false;
bool cfo_integer_enabled = false;
float cfo_correct_tol_hz = 1.0f;
float cfo_pss_ema = DEFAULT_CFO_EMA_TRACK;
float cfo_loop_bw_pss = DEFAULT_CFO_BW_PSS;
float cfo_loop_bw_ref = DEFAULT_CFO_BW_REF;
float cfo_loop_ref_min = DEFAULT_CFO_REF_MIN;
float cfo_loop_pss_tol = DEFAULT_CFO_PSS_MIN;
float sfo_ema = DEFAULT_SFO_EMA_COEFF;
uint32_t sfo_correct_period = DEFAULT_SAMPLE_OFFSET_CORRECT_PERIOD;
uint32_t cfo_loop_pss_conv = DEFAULT_PSS_STABLE_TIMEOUT;
uint32_t cfo_ref_mask = 1023;
bool interpolate_subframe_enabled = false;
bool estimator_fil_auto = false;
float estimator_fil_stddev = 1.0f;
uint32_t estimator_fil_order = 4;
float snr_to_cqi_offset = 0.0f;
std::string sss_algorithm = "full";
bool sic_pss_enabled = false;
float rx_gain_offset = 62;
bool pdsch_csi_enabled = true;
bool pdsch_8bit_decoder = false;
uint32_t intra_freq_meas_len_ms = 20;
uint32_t intra_freq_meas_period_ms = 200;
bool pregenerate_signals = false;
float force_ul_amplitude = 0.0f;
srslte::channel::args_t dl_channel_args;
srslte::channel::args_t ul_channel_args;
} phy_args_t;
/* RAT agnostic Interface MAC -> PHY */
class phy_interface_mac_common
{
public:
/* Sets a C-RNTI allowing the PHY to pregenerate signals if necessary */
virtual void set_crnti(uint16_t rnti) = 0;
/* Time advance commands */
virtual void set_timeadv_rar(uint32_t ta_cmd) = 0;
virtual void set_timeadv(uint32_t ta_cmd) = 0;
/* Activate / Disactivate SCell*/
virtual void set_activation_deactivation_scell(uint32_t cmd) = 0;
/* Sets RAR dci payload */
virtual void set_rar_grant(uint8_t grant_payload[SRSLTE_RAR_GRANT_LEN], uint16_t rnti) = 0;
virtual uint32_t get_current_tti() = 0;
virtual float get_phr() = 0;
virtual float get_pathloss_db() = 0;
};
/* Interface MAC -> PHY */
class phy_interface_mac_lte : public phy_interface_mac_common
{
public:
typedef struct {
bool is_transmitted;
uint32_t tti_ra;
uint32_t f_id;
uint32_t preamble_format;
} prach_info_t;
/* Configure PRACH using parameters written by RRC */
virtual void configure_prach_params() = 0;
virtual void prach_send(uint32_t preamble_idx, int allowed_subframe, float target_power_dbm) = 0;
virtual prach_info_t prach_get_info() = 0;
/* Indicates the transmission of a SR signal in the next opportunity */
virtual void sr_send() = 0;
virtual int sr_last_tx_tti() = 0;
virtual void set_mch_period_stop(uint32_t stop) = 0;
};
class phy_interface_rrc_lte
{
public:
virtual void get_current_cell(srslte_cell_t* cell, uint32_t* current_earfcn = NULL) = 0;
virtual uint32_t get_current_earfcn() = 0;
virtual uint32_t get_current_pci() = 0;
virtual void set_config(srslte::phy_cfg_t& config,
uint32_t cc_idx = 0,
uint32_t earfcn = 0,
srslte_cell_t* cell_info = nullptr) = 0;
virtual void set_config_tdd(srslte_tdd_config_t& tdd_config) = 0;
virtual void set_config_mbsfn_sib2(srslte::mbsfn_sf_cfg_t* cfg_list, uint32_t nof_cfgs) = 0;
virtual void set_config_mbsfn_sib13(const srslte::sib13_t& sib13) = 0;
virtual void set_config_mbsfn_mcch(const srslte::mcch_msg_t& mcch) = 0;
/* Measurements interface */
virtual void meas_reset() = 0;
virtual int meas_start(uint32_t earfcn, int pci = -1) = 0;
virtual int meas_stop(uint32_t earfcn, int pci = -1) = 0;
typedef struct {
enum { CELL_FOUND = 0, CELL_NOT_FOUND, ERROR } found;
enum { MORE_FREQS = 0, NO_MORE_FREQS } last_freq;
} cell_search_ret_t;
typedef struct {
srslte_cell_t cell;
uint32_t earfcn;
} phy_cell_t;
/* Cell search and selection procedures */
virtual cell_search_ret_t cell_search(phy_cell_t* cell) = 0;
virtual bool cell_select(phy_cell_t* cell = NULL) = 0;
virtual bool cell_is_camping() = 0;
virtual void reset() = 0;
virtual void enable_pregen_signals(bool enable) = 0;
};
// STACK interface for GW
class stack_interface_gw : public pdcp_interface_gw
{
public:
virtual bool switch_on() = 0;
};
class gw_interface_stack : public gw_interface_nas, public gw_interface_rrc, public gw_interface_pdcp
{
};
// STACK interface for MAC
class stack_interface_mac
{
public:
virtual void process_pdus() = 0;
virtual void wait_ra_completion(uint16_t rnti) = 0;
};
// STACK interface for RRC
class stack_interface_rrc
{
public:
virtual void start_cell_search() = 0;
};
// Combined interface for PHY to access stack (MAC and RRC)
class stack_interface_phy_lte : public mac_interface_phy_lte, public rrc_interface_phy_lte
{
};
// Combined interface for stack (MAC and RRC) to access PHY
class phy_interface_stack_lte : public phy_interface_mac_lte, public phy_interface_rrc_lte
{
};
} // namespace srsue
#endif // SRSLTE_UE_INTERFACES_H
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