netdev - Re: [PATCH V2 net-next 00/28] ethtool: support time stamping and phc clocks

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Message-Id: <20120402.005508.810320049567209896.davem@davemloft.net>
Date:	Mon, 02 Apr 2012 00:55:08 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	richardcochran@...il.com
Cc:	netdev@...r.kernel.org, bhutchings@...arflare.com,
	mporter@...arflare.com, jacob.e.keller@...el.com,
	jeffrey.t.kirsher@...el.com, john.ronciak@...el.com,
	e1000-devel@...ts.sourceforge.net
Subject: Re: [PATCH V2 net-next 00/28] ethtool: support time stamping and
 phc clocks

From: Richard Cochran <richardcochran@...il.com>
Date: Sun,  1 Apr 2012 17:19:45 +0200

> Support for SO_TIMESTAMPING of network packets and PTP Hardware Clocks
> has been expanding over the last year or two. In an ideal world, every
> host would have exactly one PTP hardware clock, and every Ethernet MAC
> would support SO_TIMESTAMPING on both the transmit and receive paths.
> However, since we do not yet have full coverage for these features,
> user space programs need a way to discover what a given interface
> supports in these two areas.
 ...
> This series exposes the hardware and driver capabilities known to user
> space via ethtool. 
> 
> Since the PHC code was first merged, this has become the number one
> requested new feature.
> 
> Patch number  3 applies on top of my recent two igb/phc patches.
> Patch number 12 applies on top of my recent e100 patch.
> 
> The new feature has been tested on the following hardware:
> 
> igb       Hardware time stamping in the MAC
> dp83640   Hardware time stamping in the PHY
> r8169     Software Tx time stamping in the MAC

No real objections from me, Ben?
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