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C

/*
* 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/.
*
*/
#ifndef SRSLTE_PCAP_H
#define SRSLTE_PCAP_H
#include <inttypes.h>
#include <stdbool.h>
#include <stdio.h>
#define MAC_LTE_DLT 147
#define NAS_LTE_DLT 148
#define UDP_DLT 149 // UDP needs to be selected as protocol
#define S1AP_LTE_DLT 150
/* This structure gets written to the start of the file */
typedef struct pcap_hdr_s {
unsigned int magic_number; /* magic number */
unsigned short version_major; /* major version number */
unsigned short version_minor; /* minor version number */
unsigned int thiszone; /* GMT to local correction */
unsigned int sigfigs; /* accuracy of timestamps */
unsigned int snaplen; /* max length of captured packets, in octets */
unsigned int network; /* data link type */
} pcap_hdr_t;
/* This structure precedes each packet */
typedef struct pcaprec_hdr_s {
unsigned int ts_sec; /* timestamp seconds */
unsigned int ts_usec; /* timestamp microseconds */
unsigned int incl_len; /* number of octets of packet saved in file */
unsigned int orig_len; /* actual length of packet */
} pcaprec_hdr_t;
/* radioType */
#define FDD_RADIO 1
#define TDD_RADIO 2
/* Direction */
#define DIRECTION_UPLINK 0
#define DIRECTION_DOWNLINK 1
/* rntiType */
#define NO_RNTI 0 /* Used for BCH-BCH */
#define P_RNTI 1
#define RA_RNTI 2
#define C_RNTI 3
#define SI_RNTI 4
#define SPS_RNTI 5
#define M_RNTI 6
#define MAC_LTE_START_STRING "mac-lte"
#define MAC_LTE_PAYLOAD_TAG 0x01
#define MAC_LTE_RNTI_TAG 0x02
#define MAC_LTE_UEID_TAG 0x03
#define MAC_LTE_FRAME_SUBFRAME_TAG 0x04
#define MAC_LTE_PREDFINED_DATA_TAG 0x05
#define MAC_LTE_RETX_TAG 0x06
#define MAC_LTE_CRC_STATUS_TAG 0x07
#define MAC_LTE_CARRIER_ID_TAG 0x0A
#define MAC_LTE_NB_MODE_TAG 0x0F
/* Context information for every MAC PDU that will be logged */
typedef struct MAC_Context_Info_t {
unsigned short radioType;
unsigned char direction;
unsigned char rntiType;
unsigned short rnti;
unsigned short ueid;
unsigned char isRetx;
unsigned char crcStatusOK;
unsigned char cc_idx;
unsigned short sysFrameNumber;
unsigned short subFrameNumber;
unsigned char nbiotMode;
} MAC_Context_Info_t;
/* Context information for every NAS PDU that will be logged */
typedef struct NAS_Context_Info_s {
// No Context yet
} NAS_Context_Info_t;
#define MAC_NR_START_STRING "mac-nr"
#define MAC_NR_PHR_TYPE2_OTHERCELL_TAG 0x05
#define MAC_NR_HARQID 0x06
/* Context information for every MAC NR PDU that will be logged */
typedef struct {
uint8_t radioType;
uint8_t direction;
uint8_t rntiType;
uint16_t rnti;
uint16_t ueid;
uint8_t harqid;
uint8_t phr_type2_othercell;
uint16_t system_frame_number;
uint8_t sub_frame_number;
uint16_t length;
} mac_nr_context_info_t;
/* RLC-LTE disector */
/* rlcMode */
#define RLC_TM_MODE 1
#define RLC_UM_MODE 2
#define RLC_AM_MODE 4
#define RLC_PREDEF 8
/* priority ? */
/* channelType */
#define CHANNEL_TYPE_CCCH 1
#define CHANNEL_TYPE_BCCH_BCH 2
#define CHANNEL_TYPE_PCCH 3
#define CHANNEL_TYPE_SRB 4
#define CHANNEL_TYPE_DRB 5
#define CHANNEL_TYPE_BCCH_DL_SCH 6
#define CHANNEL_TYPE_MCCH 7
#define CHANNEL_TYPE_MTCH 8
/* sequenceNumberLength */
#define UM_SN_LENGTH_5_BITS 5
#define UM_SN_LENGTH_10_BITS 10
#define AM_SN_LENGTH_10_BITS 10
#define AM_SN_LENGTH_16_BITS 16
/* Narrow band mode */
typedef enum { rlc_no_nb_mode = 0, rlc_nb_mode = 1 } rlc_lte_nb_mode;
/* Context information for every RLC PDU that will be logged */
typedef struct {
unsigned char rlcMode;
unsigned char direction;
unsigned char priority;
unsigned char sequenceNumberLength;
unsigned short ueid;
unsigned short channelType;
unsigned short channelId; /* for SRB: 1=SRB1, 2=SRB2, 3=SRB1bis; for DRB: DRB ID */
unsigned short pduLength;
bool extendedLiField;
rlc_lte_nb_mode nbMode;
} RLC_Context_Info_t;
// See Wireshark's packet-rlc-lte.h for details
#define RLC_LTE_START_STRING "rlc-lte"
#define RLC_LTE_PAYLOAD_TAG 0x01
#define RLC_LTE_SN_LENGTH_TAG 0x02
#define RLC_LTE_DIRECTION_TAG 0x03
#define RLC_LTE_PRIORITY_TAG 0x04
#define RLC_LTE_UEID_TAG 0x05
#define RLC_LTE_CHANNEL_TYPE_TAG 0x06
#define RLC_LTE_CHANNEL_ID_TAG 0x07
#define RLC_LTE_EXT_LI_FIELD_TAG 0x08
#define RLC_LTE_NB_MODE_TAG 0x09
/* Context information for every S1AP PDU that will be logged */
typedef struct S1AP_Context_Info_s {
// No Context yet
} S1AP_Context_Info_t;
#ifdef __cplusplus
extern "C" {
#endif
/* Open the file and write file header */
FILE* LTE_PCAP_Open(uint32_t DLT, const char* fileName);
/* Close the PCAP file */
void LTE_PCAP_Close(FILE* fd);
/* Write an individual MAC PDU (PCAP packet header + mac-context + mac-pdu) */
int LTE_PCAP_MAC_WritePDU(FILE* fd, MAC_Context_Info_t* context, const unsigned char* PDU, unsigned int length);
/* Write an individual NAS PDU (PCAP packet header + nas-context + nas-pdu) */
int LTE_PCAP_NAS_WritePDU(FILE* fd, NAS_Context_Info_t* context, const unsigned char* PDU, unsigned int length);
/* Write an individual RLC PDU (PCAP packet header + UDP header + rlc-context + rlc-pdu) */
int LTE_PCAP_RLC_WritePDU(FILE* fd, RLC_Context_Info_t* context, const unsigned char* PDU, unsigned int length);
/* Write an individual S1AP PDU (PCAP packet header + s1ap-context + s1ap-pdu) */
int LTE_PCAP_S1AP_WritePDU(FILE* fd, S1AP_Context_Info_t* context, const unsigned char* PDU, unsigned int length);
/* Write an individual NR MAC PDU (PCAP packet header + UDP header + nr-mac-context + mac-pdu) */
int NR_PCAP_MAC_WritePDU(FILE* fd, mac_nr_context_info_t* context, const unsigned char* PDU, unsigned int length);
#ifdef __cplusplus
}
#endif
#endif // SRSLTE_PCAP_H