Man page of PCAP_SET_TSTAMP_PRECISION

Section: Misc. Reference Manual Pages (3PCAP)
Updated: 23 August 2018
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This man page documents libpcap version 1.10.0.

Your system may have a different version installed, possibly with some local modifications. To achieve the best results, please make sure this version of this man page suits your needs. If necessary, try to look for a different version on this web site or in the man pages available in your installation.
 

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(7)


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