Date: Wed, 26 Nov 2003 12:04:56 -0800
From: "David S. Miller" <davem@redhat.com>
To: Jamie Lokier <jamie@shareable.org>
Cc: ak@suse.de, linux-kernel@vger.kernel.org
Subject: Re: Fire Engine??
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On Wed, 26 Nov 2003 20:01:53 +0000
Jamie Lokier <jamie@shareable.org> wrote:

> Do the timestamps need to be precise and accurately reflect the
> arrival time in the irq handler?

It would be a regression to make the timestamps less accurate
than those provided now.

> Or, for TCP timestamps,

The timestamps we are talking about are not used for TCP.

> Apart from TCP, precise timestamps are only used for packet capture,
> and it's easy to keep track globally of whether anyone has packet
> sockets open.

We have no knowledge of what an applications requirements are,
that is why we provide as accurate a timestamp as possible.

If we were writing this stuff for the first time now, sure we could
specify things however conveniently we like, but how this stuff behaves
is already well defined.
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