netdev - Re: [PATCH v2 net-next 2/2] gianfar: Add hardware TX timestamping support

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Message-Id: <20100413.015248.139841458.davem@davemloft.net>
Date:	Tue, 13 Apr 2010 01:52:48 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	Manfred.Rudigier@...cron.at
Cc:	netdev@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	sandeep.kumar@...escale.com, scottwood@...escale.com
Subject: Re: [PATCH v2 net-next 2/2] gianfar: Add hardware TX timestamping
 support

From: Manfred Rudigier <Manfred.Rudigier@...cron.at>
Date: Fri, 9 Apr 2010 11:10:35 +0200

> If a packet has the skb_shared_tx->hardware flag set the device is
> instructed to generate a TX timestamp and write it back to memory after
> the frame is transmitted. During the clean_tx_ring operation the
> timestamp will be extracted and copied into the skb_shared_hwtstamps
> struct of the skb.
> 
> TX timestamping is enabled by setting the tx_type to something else
> than HWTSTAMP_TX_OFF with the SIOCSHWTSTAMP ioctl command. It is only
> supported by eTSEC devices.
> 
> Signed-off-by: Manfred Rudigier <manfred.rudigier@...cron.at>

Applied to net-next-2.6
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