netdev - Re: [PATCH V2 09/12] net/eipoib: Add main driver functionality

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Message-ID: <20120812105421.GI1421@redhat.com>
Date:	Sun, 12 Aug 2012 13:54:22 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Or Gerlitz <or.gerlitz@...il.com>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Or Gerlitz <ogerlitz@...lanox.com>, davem@...emloft.net,
	roland@...nel.org, netdev@...r.kernel.org, ali@...lanox.com,
	sean.hefty@...el.com, Erez Shitrit <erezsh@...lanox.co.il>,
	Doug Ledford <dledford@...hat.com>
Subject: Re: [PATCH V2 09/12] net/eipoib: Add main driver functionality

On Wed, Aug 08, 2012 at 08:23:15AM +0300, Or Gerlitz wrote:
> > So far the things that make sense. Here are some that don't, to me:
> 
> > - Is a pdf presentation all you have in terms of documentation?
> >   We are talking communication protocols here - I would expect a
> >   proper spec, and some effort to standardize, otherwise where's the
> >   guarantee it won't change in an incompatible way?
> 
> To be precise, the solution uses 100% IPoIB wire-protocol, so we don't
> see a need
> for any spec change / standardization effort.

Thinking about it some more, the solution is not really 100% local:
- ARP packets used at migration are visible on the network
- QPN/LID in MAC are guest visible, and could be exported on the network

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