Re: [Xen-devel] [PATCH net-next v4] Don't destroy the netdev until the vif is shut down

[David Miller <davem@xxxxxxxxxxxxx>]

From: Paul Durrant <paul.durrant@xxxxxxxxxx>
Date: Tue, 17 Sep 2013 17:46:08 +0100

> Without this patch, if a frontend cycles through states Closing
> and Closed (which Windows frontends need to do) then the netdev
> will be destroyed and requires re-invocation of hotplug scripts
> to restore state before the frontend can move to Connected. Thus
> when udev is not in use the backend gets stuck in InitWait.
> 
> With this patch, the netdev is left alone whilst the backend is
> still online and is only de-registered and freed just prior to
> destroying the vif (which is also nicely symmetrical with the
> netdev allocation and registration being done during probe) so
> no re-invocation of hotplug scripts is required.
> 
> Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>

I think all of the testing requests have been satisfied so I have
applied this.

But _please_ write a more proper subject line in future patch
submissions.  You have to provide a subsystem prefix in the
subject line, here I added "xen-netback: ", otherwise someone
skimming the shortlog has no idea what area of code this change
touches.

Thanks.

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