gsm_um_phdr Struct Reference

Pseudo-header for GSM Um air interface (WTAP_ENCAP_GSM_UM) capture files. More...

#include <wtap.h>

Public Attributes
bool	uplink
uint8_t	channel
uint8_t	bsic
uint16_t	arfcn
uint32_t	tdma_frame
uint8_t	error
uint16_t	timeshift

Detailed Description

Pseudo-header for GSM Um air interface (WTAP_ENCAP_GSM_UM) capture files.

Member Data Documentation

arfcn

uint16_t gsm_um_phdr::arfcn

Absolute Radio Frequency Channel Number of the carrier; populated for downlink frames only.

bsic

uint8_t gsm_um_phdr::bsic

Base Station Identity Code of the BTS; populated for downlink frames only.

channel

uint8_t gsm_um_phdr::channel

Logical channel type on which this frame was captured (e.g. BCCH, SDCCH, TCH).

error

uint8_t gsm_um_phdr::error

Error code reported by the capture device for this frame; 0 if no error.

tdma_frame

uint32_t gsm_um_phdr::tdma_frame

TDMA frame number at which this frame was captured; populated for downlink frames only.

timeshift

uint16_t gsm_um_phdr::timeshift

Timing offset in quarter-symbol units measured for this frame.

uplink

bool gsm_um_phdr::uplink

True if the frame was captured on the uplink (MS→BTS); false for downlink (BTS→MS).

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The documentation for this struct was generated from the following file:

• /builds/wireshark/wireshark/wiretap/wtap.h