pcap_set_tstamp_precision(3PCAP) man page
Updated: 23 August 2018 • View in plain text • Return to Main Contents
This man page documents libpcap version 1.11.0-PRE-GIT (see also: 1.10.2, 1.10.1, 1.10.0, 1.9.1, 1.9.0, 1.8.1, 1.7.4, 1.6.2, 1.5.3).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.
pcap_set_tstamp_precision - set the time stamp precision returned in captures
#include <pcap/pcap.h> int pcap_set_tstamp_precision(pcap_t *p, int tstamp_precision);
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_NANOto request desired precision. By default, time stamps are in microseconds.
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_NOTSUPif the capture device does not support the requested time stamp precision,
PCAP_ERROR_ACTIVATEDif called on a capture handle that has been activated.
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.
pcap(3PCAP), pcap_get_tstamp_precision(3PCAP), pcap-tstamp(7)
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