Re: [Xen-devel] [PATCH 20 of 29 RFC] libxl: introduce libxl hotplug public API functions

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Stefano Stabellini writes ("Re: [Xen-devel] [PATCH 20 of 29 RFC] libxl: 
introduce libxl hotplug public API functions"):
> On Thu, 9 Feb 2012, Ian Jackson wrote:
> > Stefano Stabellini writes ("Re: [Xen-devel] [PATCH 20 of 29 RFC] libxl: 
> > introduce libxl hotplug public API functions"):
> > > - we can reuse the "state" based mechanism to establish a connection:
> > > again not a great protocol, but very well known and understood.
> > 
> > I don't think we have, in general, a good understanding of these
> > "state" based protocols ...
> 
> What?! We have netback, netfront, blkback, blkfront, pciback, pcifront,
> kbdfront, fbfront, xenconsole, and these are only the ones in Linux!!

In many (most?) of these cases we don't know exactly what the state
numbers mean, let alone exactly the details of the rest of the
protocol.

Ian.

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