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From: Richard Cochran <richardcochran@gmail.com>
To: Paul Chavent <Paul.Chavent@onera.fr>
Cc: davem@davemloft.net, edumazet@google.com,
	daniel.borkmann@tik.ee.ethz.ch, xemul@parallels.com,
	ebiederm@xmission.com, netdev@vger.kernel.org
Subject: Re: [RFC] net : add tx timestamp to packet mmap.
Date: Tue, 9 Apr 2013 15:15:35 +0200	[thread overview]
Message-ID: <20130409131534.GB5132@netboy> (raw)
In-Reply-To: <5163F0B1.7090309@onera.fr>

On Tue, Apr 09, 2013 at 12:42:57PM +0200, Paul Chavent wrote:
> 
> Would it be possible that the packet mmap maintainers give their
> opinion on this thread please ?

I was digging around, trying to understand whether libpcap can get HW
time stamps via the packet_mmap interface, and I found this.

 commit 614f60fa9d73a9e8fdff3df83381907fea7c5649
 Author: Scott McMillan <scott.a.mcmillan@intel.com>
 Date:   Wed Jun 2 05:53:56 2010 -0700

    packet_mmap: expose hw packet timestamps to network packet capture utilities

Maybe you could ask Scott for help?

[ It looks to me like that patch is kinda useless, since the user has
  no way to tell whether the time stamps are from HW or SW. ]

HTH,
Richard

  reply	other threads:[~2013-04-09 13:15 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-12-12 15:29 [RFC] net : add tx timestamp to packet mmap Paul Chavent
2012-12-12 19:23 ` David Miller
2012-12-13  7:13   ` Paul Chavent
2012-12-13 13:29 ` Richard Cochran
2012-12-13 16:13   ` Paul Chavent
2012-12-13 18:17     ` Richard Cochran
2012-12-14  7:57       ` Paul Chavent
2013-04-09 10:42       ` Paul Chavent
2013-04-09 13:15         ` Richard Cochran [this message]
2013-04-13 18:33     ` Willem de Bruijn
2013-04-13 18:56       ` [PATCH] net-packet: tx timestamping on tpacket ring Willem de Bruijn
2013-04-13 22:18         ` Daniel Borkmann
2013-04-13 22:47           ` David Miller
2013-04-14  0:04             ` Willem de Bruijn
2013-04-14  0:16               ` Willem de Bruijn
2013-04-14  0:49                 ` Willem de Bruijn
2013-04-14  5:16                   ` Daniel Borkmann
2013-04-14  0:00           ` Willem de Bruijn
2013-04-14 10:52             ` Daniel Borkmann
2013-04-14 13:07               ` Richard Cochran
2013-04-15  7:37                 ` Paul Chavent
2013-04-15 16:56                   ` Richard Cochran
2013-04-15 16:59                   ` Willem de Bruijn
2013-04-17 10:22                     ` Richard Cochran
2013-04-19 21:51                     ` [PATCH net-next v2] packet: " Willem de Bruijn
2013-04-20 12:33                       ` Daniel Borkmann
2013-04-21  2:30                         ` Willem de Bruijn
2013-04-21 10:10                           ` Daniel Borkmann
2013-04-21 16:42                             ` Willem de Bruijn
2013-04-21 18:14                               ` Daniel Borkmann
2013-04-22  8:19                               ` Paul Chavent
2013-04-22 10:25                                 ` Daniel Borkmann
2013-04-22 14:23                                 ` Willem de Bruijn
2013-04-20 16:43                       ` Richard Cochran
2013-04-21  2:34                         ` Willem de Bruijn
2013-04-15 15:41               ` [PATCH] net-packet: " Paul Chavent
2013-04-15  9:45           ` David Laight
2013-04-15 17:08             ` Willem de Bruijn
2013-04-15 17:31             ` David Miller
2013-04-15  7:31         ` Paul Chavent
2013-04-15 16:37           ` Willem de Bruijn

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