netdev - Re: [PATCH 3/3] net/mlx4_en: Add HW timestamping (TS) support

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Message-ID: <20121004142734.GA2810@netboy.at.omicron.at>
Date:	Thu, 4 Oct 2012 16:27:35 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	Eugenia Emantayev <eugenia@...lanox.com>
Cc:	Yevgeny Petrilin <yevgenyp@...lanox.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Or Gerlitz <ogerlitz@...lanox.com>
Subject: Re: [PATCH 3/3] net/mlx4_en: Add HW timestamping (TS) support

On Thu, Oct 04, 2012 at 02:08:29PM +0000, Eugenia Emantayev wrote:
> > Also, why not expose your device as a PTP Hardware Clock?
> 
> Hello Richard,
> Could you please clarify the above?
> What do you mean by expose your device as a PTP Hardware Clock?

You could register the driver as PHC class device, described in

   Documentation/ptp/ptp.txt

and then you device will work together along with a user space PTP
stack, like the one I wrote at

   http://linuxptp.sourceforge.net

Thanks,
Richard

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