netdev - Re: [PATCH net-next 2/7] net-timestamp: MSG

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Message-ID: <20140625050158.GD3845@localhost.localdomain>
Date:	Wed, 25 Jun 2014 07:01:58 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	Willem de Bruijn <willemb@...gle.com>
Cc:	netdev@...r.kernel.org, eric.dumazet@...il.com, davem@...emloft.net
Subject: Re: [PATCH net-next 2/7] net-timestamp: MSG_TSTAMP one-shot tx
 timestamps

On Tue, Jun 24, 2014 at 11:43:47AM -0400, Willem de Bruijn wrote:
> The kernel support datagram tx timestamping through socket option
> SO_TIMESTAMPING. This patch add send() flag MSG_TSTAMP to allow
> selectively requesting a timestamp for a single packet.

This is a nice idea. I wonder whether the drivers will react
correctly, need to think about it.

> MSG_TSTAMP does not depend on SO_TIMESTAMPING. Enabling both
> concurrently is redundant, but safe.
> 
> This patch adds support for IPv4 and IPv6 UDP sendmsg().

What about raw?

Thanks,
Richard

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