Re: [Xen-devel] Re: [patch] netfront: unregister net device at backend_changed() if network_connect() failed

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 20/11/08 02:53, "Joe Jin" <joe.jin@xxxxxxxxxx> wrote:

>> In this case, xend shouldn't be creating front and back directories at all.
>> What happens if you make netif's getDeviceDetails() return None for devid if
>> type == 'ioemu'? This should cause DevController.py not to set up the
>> front/back details and netfront.c will never get triggered.
>> 
> 
> The change could not stoped kernel insert xen_vnif driver.
> From xend.log I did not saw xend have tried to create vnif device at all,
> I'm not sure whether virtual device platform "Xen Platform Device" have
> preallocated the interface, then kernel try to load the driver?

If you really return None for devid from getDeviceDetails then it should be
impossible to get further in DevController.py:createDevice(). If you take a
look at the implementation it immediately returns in that case. So something
odd is going on. Perhaps your new patch does not work.

 -- Keir



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