netdev - Re: SO_REUSEPORT - can it be done in kernel?

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Message-ID: <1298997084.3284.119.camel@edumazet-laptop>
Date:	Tue, 01 Mar 2011 17:31:24 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	Thomas Graf <tgraf@...radead.org>,
	David Miller <davem@...emloft.net>, rick.jones2@...com,
	therbert@...gle.com, wsommerfeld@...gle.com,
	daniel.baluta@...il.com, netdev@...r.kernel.org
Subject: Re: SO_REUSEPORT - can it be done in kernel?

Le mardi 01 mars 2011 à 21:18 +0800, Herbert Xu a écrit :
> On Tue, Mar 01, 2011 at 02:03:29PM +0100, Eric Dumazet wrote:
> >
> > I believe its now done properly (in net-next-2.6) with commit
> > 4f57c087de9b46182 (net: implement mechanism for HW based QOS)
> 
> Nope, that has nothing to do with this.

Right, I was thinking of commit 1d24eb4815d1e0e8 (xps: Transmit Packet
Steering)

Now you say all this stuff should be replaced by "use this cpu number
nly", just because you have a multi threaded process sending UDP frames
trough one socket...

This wont work for tcp streams, you could imagine a multi-threaded
application using a shared tcp socket as well. Too many OOO packets.



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