RLC,无线链路控制子层

RLC(Radio Link Control，无线链路层控制协议)是GPRS/WCDMA/TD-SCDMA/LTE 等无线通信系统中的无线链路控制层协议。在WCDMA系统中，RLC层位于MAC层之上，属于L2的一部分，为用户和控制数据提供分段和重传业务。

rlc_pcap.h

lib\include\srslte\common 1859 4/11/2019 1

/**** \section COPYRIGHT** Copyright 2013-2015 Software Radio Systems Limited** \section LICENSE** This file is part of the srsUE library.** srsUE 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.** srsUE 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/.* RLC,无线链路控制子层。*/#ifndef RLCPCAP_H
#define RLCPCAP_H#include <stdint.h>
#include "srslte/common/pcap.h"namespace srslte {//RLC,无线链路控制子层。
class rlc_pcap
{
public: rlc_pcap() {enable_write=false; ue_id=0; pcap_file = NULL; };void enable(bool en);void open(const char *filename, uint32_t ue_id = 0);void close();void set_ue_id(uint16_t ue_id);void write_dl_am_ccch(uint8_t* pdu, uint32_t pdu_len_bytes);void write_ul_am_ccch(uint8_t* pdu, uint32_t pdu_len_bytes);private:bool enable_write; FILE *pcap_file; uint32_t ue_id;void pack_and_write(uint8_t* pdu,uint32_t pdu_len_bytes,uint8_t mode,uint8_t direction,uint8_t priority,uint8_t seqnumberlength,uint16_t ueid,uint16_t channel_type,uint16_t channel_id);
};} // namespace srsue#endif // RLCPCAP_H

rlc_pcap.cc

lib\src\common 2720 2/28/2019 44

/**** \section COPYRIGHT** Copyright 2013-2015 Software Radio Systems Limited** \section LICENSE** This file is part of the srsUE library.** srsUE 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.** srsUE 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/.**/#include <stdint.h>
#include "srslte/srslte.h"
#include "srslte/common/pcap.h"
#include "srslte/common/rlc_pcap.h"namespace srslte {void rlc_pcap::enable(bool en)
{enable_write = true;
}
void rlc_pcap::open(const char* filename, uint32_t ue_id)
{fprintf(stdout, "Opening RLC PCAP with DLT=%d\n", RLC_LTE_DLT);pcap_file = LTE_PCAP_Open(RLC_LTE_DLT, filename);this->ue_id = ue_id;enable_write = true;
}
void rlc_pcap::close()
{fprintf(stdout, "Saving RLC PCAP file\n");LTE_PCAP_Close(pcap_file);
}void rlc_pcap::set_ue_id(uint16_t ue_id) {this->ue_id = ue_id;
}void rlc_pcap::pack_and_write(uint8_t* pdu, uint32_t pdu_len_bytes, uint8_t mode, uint8_t direction, uint8_t priority, uint8_t seqnumberlength, uint16_t ueid, uint16_t channel_type, uint16_t channel_id)
{if (enable_write) {RLC_Context_Info_t context;context.rlcMode = mode;context.direction = direction;context.priority = priority;context.sequenceNumberLength = seqnumberlength;context.ueid = ueid;context.channelType = channel_type;context.channelId = channel_id;context.pduLength = pdu_len_bytes;if (pdu) {LTE_PCAP_RLC_WritePDU(pcap_file, &context, pdu, pdu_len_bytes);}}
}void rlc_pcap::write_dl_am_ccch(uint8_t* pdu, uint32_t pdu_len_bytes)
{uint8_t priority = 0;uint8_t seqnumberlength = 0; // normal length of 10bituint8_t channel_id = 0;pack_and_write(pdu, pdu_len_bytes, RLC_AM_MODE, DIRECTION_DOWNLINK, priority, seqnumberlength, ue_id, CHANNEL_TYPE_CCCH, channel_id);
}void rlc_pcap::write_ul_am_ccch(uint8_t* pdu, uint32_t pdu_len_bytes)
{uint8_t priority = 0;uint8_t seqnumberlength = 0; // normal length of 10bituint8_t channel_id = 0;pack_and_write(pdu, pdu_len_bytes, RLC_AM_MODE, DIRECTION_UPLINK, priority, seqnumberlength, ue_id, CHANNEL_TYPE_CCCH, channel_id);
}}

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srsLTE源码学习：RLC,无线链路控制子层抓包rlc_pcap.h，rlc_pcap.cc

RLC,无线链路控制子层

rlc_pcap.h

rlc_pcap.cc

srsLTE源码学习：RLC,无线链路控制子层抓包rlc_pcap.h，rlc_pcap.cc相关推荐

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