PCAP_SET_TSTAMP_PRECISION(3PCAP) PCAP_SET_TSTAMP_PRECISION(3PCAP)

NAME

pcap_set_tstamp_precision - set the time stamp precision returned in
captures

SYNOPSIS

#include <pcap/pcap.h>

int pcap_set_tstamp_precision(pcap_t *p, int tstamp_precision);

DESCRIPTION

pcap_set_tstamp_precision() sets the precision of the time stamp
desired for packets captured on the pcap descriptor to the type
specified by tstamp_precision. It must be called on a pcap
descriptor created by pcap_create(3PCAP) that has not yet been
activated by pcap_activate(3PCAP). Two time stamp precisions are
supported, microseconds and nanoseconds. One can use options
PCAP_TSTAMP_PRECISION_MICRO and PCAP_TSTAMP_PRECISION_NANO to request
desired precision. By default, time stamps are in microseconds.

RETURN VALUE

pcap_set_tstamp_precision() returns 0 on success if the specified
time stamp precision is expected to be supported by the capture
device, PCAP_ERROR_TSTAMP_PRECISION_NOTSUP if the capture device does
not support the requested time stamp precision, PCAP_ERROR_ACTIVATED
if called on a capture handle that has been activated.

BACKWARD COMPATIBILITY

This function became available in libpcap release 1.5.1. In previous
releases, time stamps from a capture device or savefile are always
given in seconds and microseconds.

SEE ALSO

pcap(3PCAP), pcap_get_tstamp_precision(3PCAP), pcap-tstamp(5)

23 August 2018
PCAP_SET_TSTAMP_PRECISION(3PCAP)