mirror of https://github.com/PentHertz/srsLTE.git
107 lines
3.2 KiB
C++
107 lines
3.2 KiB
C++
/**
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* Copyright 2013-2022 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsRAN is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include "srsran/common/rlc_pcap.h"
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#include "srsran/common/pcap.h"
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#include "srsran/srsran.h"
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#include <stdint.h>
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namespace srsran {
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void rlc_pcap::enable(bool en)
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{
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enable_write = true;
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}
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void rlc_pcap::open(const char* filename, const rlc_config_t& config)
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{
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fprintf(stdout, "Opening RLC PCAP with DLT=%d\n", UDP_DLT);
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pcap_file = DLT_PCAP_Open(UDP_DLT, filename);
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enable_write = true;
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if (config.rlc_mode == rlc_mode_t::am) {
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mode = RLC_AM_MODE;
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sn_length = AM_SN_LENGTH_10_BITS;
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} else if (config.rlc_mode == rlc_mode_t::um) {
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mode = RLC_UM_MODE;
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if (config.um.rx_sn_field_length == rlc_umd_sn_size_t::size5bits) {
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sn_length = UM_SN_LENGTH_5_BITS;
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} else {
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sn_length = UM_SN_LENGTH_10_BITS;
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}
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} else {
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mode = RLC_TM_MODE;
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}
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}
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void rlc_pcap::close()
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{
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fprintf(stdout, "Saving RLC PCAP file\n");
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DLT_PCAP_Close(pcap_file);
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}
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void rlc_pcap::set_ue_id(uint16_t ue_id_)
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{
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ue_id = ue_id_;
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}
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void rlc_pcap::pack_and_write(uint8_t* pdu,
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uint32_t pdu_len_bytes,
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uint8_t mode_,
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uint8_t direction,
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uint8_t priority,
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uint8_t seqnumberlength,
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uint16_t ueid,
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uint16_t channel_type,
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uint16_t channel_id)
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{
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if (enable_write) {
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RLC_Context_Info_t context;
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context.rlcMode = mode_;
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context.direction = direction;
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context.priority = priority;
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context.sequenceNumberLength = seqnumberlength;
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context.ueid = ueid;
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context.channelType = channel_type;
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context.channelId = channel_id;
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context.pduLength = pdu_len_bytes;
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if (pdu) {
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LTE_PCAP_RLC_WritePDU(pcap_file, &context, pdu, pdu_len_bytes);
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}
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}
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}
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void rlc_pcap::write_dl_ccch(uint8_t* pdu, uint32_t pdu_len_bytes)
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{
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uint8_t priority = 0;
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uint8_t channel_id = CHANNEL_TYPE_DRB;
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pack_and_write(
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pdu, pdu_len_bytes, mode, DIRECTION_DOWNLINK, priority, sn_length, ue_id, CHANNEL_TYPE_CCCH, channel_id);
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}
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void rlc_pcap::write_ul_ccch(uint8_t* pdu, uint32_t pdu_len_bytes)
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{
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uint8_t priority = 0;
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uint8_t channel_id = CHANNEL_TYPE_DRB;
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pack_and_write(pdu, pdu_len_bytes, mode, DIRECTION_UPLINK, priority, sn_length, ue_id, CHANNEL_TYPE_CCCH, channel_id);
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}
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} // namespace srsran
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