From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Cochran Subject: Re: [RFC] net : add tx timestamp to packet mmap. Date: Tue, 9 Apr 2013 15:15:35 +0200 Message-ID: <20130409131534.GB5132@netboy> References: <1355326165-12277-1-git-send-email-paul.chavent@onera.fr> <20121213132916.GB10703@netboy.at.omicron.at> <50C9FEC4.5050804@onera.fr> <20121213181733.GA2312@netboy.at.omicron.at> <5163F0B1.7090309@onera.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: davem@davemloft.net, edumazet@google.com, daniel.borkmann@tik.ee.ethz.ch, xemul@parallels.com, ebiederm@xmission.com, netdev@vger.kernel.org To: Paul Chavent Return-path: Received: from mail-bk0-f41.google.com ([209.85.214.41]:52919 "EHLO mail-bk0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759532Ab3DINPn (ORCPT ); Tue, 9 Apr 2013 09:15:43 -0400 Received: by mail-bk0-f41.google.com with SMTP id i18so3643913bkv.0 for ; Tue, 09 Apr 2013 06:15:41 -0700 (PDT) Content-Disposition: inline In-Reply-To: <5163F0B1.7090309@onera.fr> Sender: netdev-owner@vger.kernel.org List-ID: 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 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