pcap_set_tstamp_precision(3) - NetBSD Manual Pages

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PCAP_SET_TSTAMP_PRECISION(3)                      PCAP_SET_TSTAMP_PRECISION(3)




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 speci-
       fied by tstamp_precision.  It must be called on a pcap descriptor  cre-
       ated  by  pcap_create(3)  that has not yet been activated by pcap_acti-
       vate(3).  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 sup-
       port 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(3), pcap_get_tstamp_precision(3), pcap-tstamp(7)



                                5 February 2015   PCAP_SET_TSTAMP_PRECISION(3)