tcpdump mailing list archives

Re: libpcap pcap_sendpacket support across platforms.


From: Michael Richardson <mcr () sandelman ottawa on ca>
Date: Wed, 24 Mar 2004 09:42:41 -0500

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"Stephen" == Stephen Donnelly <stephen () endace com> writes:
    Stephen> useful. Is it assumed that libpcap now always uses UTC for
    Stephen> timezone? 

  No, it stores the timezone in the header.

    Stephen> timeval (unix sec,microsec) by libpcap, timespec (unix
    Stephen> sec,nanosec) by AIX libpcap(?), and the Endace 64-bit
    Stephen> fixed-point format (unix sec,fraction). All these formats
    Stephen> use 64 bits total. I don't know about WinPcap. 

  I prefer unix sec, nanosec myself.

    Stephen> Are we trying to converge on one time-stamp format for
    Stephen> libpcap-ng, or allowing the use of various formats, with
    Stephen> some indication of which format per file/interface, and the
    Stephen> problems of merging traces? Would libpcap offer time-stamp
    Stephen> conversion routines for programs that don't understand
    Stephen> various ones, and allow them to select?

  I'd rather have one new common time-stamp format, but I'd like to leave the
door open to other formats being supported.

- --
]       ON HUMILITY: to err is human. To moo, bovine.           |  firewalls  [
]   Michael Richardson,    Xelerance Corporation, Ottawa, ON    |net architect[
] mcr () xelerance com      http://www.sandelman.ottawa.on.ca/mcr/ |device driver[
] panic("Just another Debian GNU/Linux using, kernel hacking, security guy"); [
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