netdev - Re: [PATCH] new UDPCP Communication Protocol

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Message-ID: <1294784609.18562.4.camel@wall-e>
Date:	Tue, 11 Jan 2011 23:23:29 +0100
From:	Stefani Seibold <stefani@...bold.net>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	David Miller <davem@...emloft.net>, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, netdev@...r.kernel.org,
	shemminger@...tta.com, jj@...osbits.net, daniel.baluta@...il.com,
	jochen@...hen.org, hagen@...u.net, torvalds@...ux-foundation.org,
	pavel@....cz
Subject: Re: [PATCH] new UDPCP Communication Protocol

Am Dienstag, den 11.01.2011, 22:46 +0100 schrieb Eric Dumazet:
> Le mardi 11 janvier 2011 à 22:41 +0100, Stefani Seibold a écrit :
> 
> > Second, the design is may in your opinion poor. I like it. What is
> > really poor is the kernel_...() socket functions, which are only simple
> > wrapper of the system calls without any performance improvement, skb
> > support and memory saving.
> > 
> 
> The only thing you want is to have a callback to your own code to
> deliver an decapsulated skb to your state machine.
> 
> Take a look at other layers on top of UDP
> 
> (L2TP comes to mind)
> 

I have looked on it. And it will not work since UDPCP is UDP. And so
IPPROTO_UDP (17) is still handled by the UDP handler.

Despite this it will also make no sense to rewrite the whole UDP socket
layer.

The only thing i have found with comes near to my requirements is the
rxrpc module, but i see no real different to my solution.


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