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Subject: Re: [PATCH] AF_UNIX: Implement SO_TIMESTAMP and SO_TIMETAMPNS on
 Unix sockets
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Alban Crequy <alban.crequy@collabora.co.uk>
Cc: Lennart Poettering <lennart@poettering.net>,
        "David S. Miller" <davem@davemloft.net>,
        Stephen Hemminger <shemminger@vyatta.com>,
        Cyrill Gorcunov <gorcunov@openvz.org>,
        Alexey Dobriyan <adobriyan@gmail.com>, linux-kernel@vger.kernel.org,
        netdev@vger.kernel.org
In-Reply-To: <1286218109-30771-1-git-send-email-alban.crequy@collabora.co.uk>
References: <20101004194734.6a1caf3e@chocolatine.cbg.collabora.co.uk>
	 <1286218109-30771-1-git-send-email-alban.crequy@collabora.co.uk>
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Date: Mon, 04 Oct 2010 21:20:52 +0200
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Le lundi 04 octobre 2010 à 19:48 +0100, Alban Crequy a écrit :
> Userspace applications can already request to receive timestamps with:
> setsockopt(sockfd, SOL_SOCKET, SO_TIMESTAMP, ...)
> 
> Although setsockopt() returns zero (success), timestamps are not added to the
> ancillary data. This patch fixes that on SOCK_DGRAM and SOCK_SEQPACKET Unix
> sockets.
> 
> Signed-off-by: Alban Crequy <alban.crequy@collabora.co.uk>

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>

Note: tstamp is sampled at the time of skb queueing, _after_ eventual
sleep in sock_alloc_send_skb() or memcpy_fromiovec()