netdev - Re: [ovs-dev] [GIT PULL v2] Open vSwitch

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Message-ID: <20111128160400.GB6349@nicira.com>
Date:	Mon, 28 Nov 2011 08:04:00 -0800
From:	Ben Pfaff <blp@...ira.com>
To:	"Fischer, Anna" <anna.fischer@...com>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	"jhs@...atatu.com" <jhs@...atatu.com>,
	"dev@...nvswitch.org" <dev@...nvswitch.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>
Subject: Re: [ovs-dev] [GIT PULL v2] Open vSwitch

On Mon, Nov 28, 2011 at 01:54:16PM +0000, Fischer, Anna wrote:
> Yes, I mentioned this months ago, and I am surprised this critical
> issue has never been picked up on and addressed. With a flaw like this
> there is no chance this component can be used in any serious
> virtualization deployment where different customers share the same
> physical server.

It was addressed, by introducing additional queues and using them in
userspace.

This is documented in NEWS:

    - Flow setups are now processed in a round-robin manner across ports
      to prevent any single client from monopolizing the CPU and conducting
      a denial of service attack.

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