netdev - Re: UDP splice

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Message-ID: <1372096418.3301.75.camel@edumazet-glaptop>
Date:	Mon, 24 Jun 2013 10:53:38 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ricardo Landim <ricardolan@...il.com>
Cc:	Ben Hutchings <bhutchings@...arflare.com>, netdev@...r.kernel.org
Subject: Re: UDP splice

On Mon, 2013-06-24 at 14:09 -0300, Ricardo Landim wrote:
> Useful for UDP proxy, mainly for RTP payload including voice (voip)
> and video live stream...


I really doubt splice could help voip streams, they usually send one
small frame every 20 ms. Implementing splice() for such small frame
would be not really useful.

For video, I would rather use a kernel helper (netfilter/conntrack ?) to
avoid userland switch...



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