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C++

/**
* Copyright 2013-2021 Software Radio Systems Limited
*
* This file is part of srsRAN.
*
* srsRAN 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.
*
* srsRAN 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/.
*
*/
#ifndef SRSRAN_MAC_PCAP_BASE_H
#define SRSRAN_MAC_PCAP_BASE_H
#include "srsran/adt/circular_buffer.h"
#include "srsran/common/buffer_pool.h"
#include "srsran/common/common.h"
#include "srsran/common/pcap.h"
#include "srsran/common/threads.h"
#include "srsran/srslog/srslog.h"
#include <mutex>
#include <stdint.h>
#include <thread>
namespace srsran {
class mac_pcap_base : protected srsran::thread
{
public:
mac_pcap_base();
~mac_pcap_base();
void enable(bool enable);
virtual uint32_t close() = 0;
void set_ue_id(uint16_t ue_id);
// EUTRA
void
write_ul_crnti(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t crnti, uint32_t reTX, uint32_t tti, uint8_t cc_idx);
void write_dl_crnti(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t crnti, bool crc_ok, uint32_t tti, uint8_t cc_idx);
void write_dl_ranti(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t ranti, bool crc_ok, uint32_t tti, uint8_t cc_idx);
void write_ul_crnti(uint8_t* pdu,
uint32_t pdu_len_bytes,
uint16_t crnti,
uint16_t ue_id,
uint32_t reTX,
uint32_t tti,
uint8_t cc_idx);
void write_dl_crnti(uint8_t* pdu,
uint32_t pdu_len_bytes,
uint16_t crnti,
uint16_t ue_id,
bool crc_ok,
uint32_t tti,
uint8_t cc_idx);
// SI and BCH only for DL
void write_dl_sirnti(uint8_t* pdu, uint32_t pdu_len_bytes, bool crc_ok, uint32_t tti, uint8_t cc_idx);
void write_dl_bch(uint8_t* pdu, uint32_t pdu_len_bytes, bool crc_ok, uint32_t tti, uint8_t cc_idx);
void write_dl_pch(uint8_t* pdu, uint32_t pdu_len_bytes, bool crc_ok, uint32_t tti, uint8_t cc_idx);
void write_dl_mch(uint8_t* pdu, uint32_t pdu_len_bytes, bool crc_ok, uint32_t tti, uint8_t cc_idx);
void write_ul_rrc_pdu(const uint8_t* input, const int32_t input_len);
// Sidelink
void write_sl_crnti(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t rnti, uint32_t reTX, uint32_t tti, uint8_t cc_idx);
// NR
void write_dl_crnti_nr(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t crnti, uint8_t harqid, uint32_t tti);
void write_ul_crnti_nr(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t rnti, uint8_t harqid, uint32_t tti);
void write_dl_ra_rnti_nr(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t rnti, uint8_t harqid, uint32_t tti);
void write_dl_bch_nr(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t rnti, uint8_t harqid, uint32_t tti);
void write_dl_pch_nr(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t rnti, uint8_t harqid, uint32_t tti);
void write_dl_si_rnti_nr(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t rnti, uint8_t harqid, uint32_t tti);
// NR for enb with different ue_id
// clang-format off
void write_dl_crnti_nr(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t crnti, uint16_t ue_id, uint8_t harqid, uint32_t tti);
void write_ul_crnti_nr(uint8_t* pdu, uint32_t pdu_len_bytes, uint16_t rnti, uint16_t ue_id, uint8_t harqid, uint32_t tti);
// clang-format on
protected:
typedef struct {
// Different PCAP context for both RATs
srsran::srsran_rat_t rat;
MAC_Context_Info_t context;
mac_nr_context_info_t context_nr;
unique_byte_buffer_t pdu;
} pcap_pdu_t;
virtual void write_pdu(pcap_pdu_t& pdu) = 0;
void run_thread() final;
std::mutex mutex;
srslog::basic_logger& logger;
std::atomic<bool> running = {false};
static_blocking_queue<pcap_pdu_t, 1024> queue;
uint16_t ue_id = 0;
private:
void pack_and_queue(uint8_t* payload,
uint32_t payload_len,
uint16_t ue_id,
uint32_t reTX,
bool crc_ok,
uint8_t cc_idx,
uint32_t tti,
uint16_t crnti_,
uint8_t direction,
uint8_t rnti_type);
void pack_and_queue_nr(uint8_t* payload,
uint32_t payload_len,
uint32_t tti,
uint16_t crnti,
uint16_t ue_id,
uint8_t harqid,
uint8_t direction,
uint8_t rnti_type);
};
} // namespace srsran
#endif // SRSRAN_MAC_PCAP_BASE_H