linux-kernel - Re: [PATCH] new UDPCP Communication Protocol

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Message-ID: <1294051199.2892.198.camel@edumazet-laptop>
Date:	Mon, 03 Jan 2011 11:39:59 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Stefani Seibold <stefani@...bold.net>
Cc:	Jesper Juhl <jj@...osbits.net>, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, davem@...emloft.net,
	netdev@...r.kernel.org, shemminger@...tta.com,
	daniel.baluta@...il.com, jochen@...hen.org
Subject: Re: [PATCH] new UDPCP Communication Protocol

Le lundi 03 janvier 2011 à 10:54 +0100, Stefani Seibold a écrit :

> How can you do a routing, how can you determinate the MTU of the route.
> This are basics. Look into other code how this things will be handled is
> in my opinion the right way, since there a no function provide to do
> this.
> 

Hmm, how user land can perform this task then ?

Is there an open source implementation of UDPCP ?

What are its problems ? You say its dog slow, I really wonder why.
UDP stack is pretty scalable these days, yet some improvements are
possible.

Why not adding generic helpers if you believe you miss some
infrastructure ? This could benefit to other 'stacks' as well.

> Otherwise you can say the same about all the filesystem or PCI
> drvivers , which do also a lot in the same way. But since this is the
> way to do it, it is the right way.
> 

These drivers are here because of high performance on top of high
performance specs.

While UDPCP is only a layer above UDP. If the problem comes from UDP
being too slow, it'll be slow too.

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