Re: when does udev rename network interface ?

[Andrey Borzenkov <arvidjaar@mail.ru>]

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On Thursday 29 June 2006 19:42, Brice Goglin wrote:
> Hi,
>
> In our myri10ge ethernet driver, we print the interface name with
> netdev->name at the end of the myri10ge_probe routine. When the user
> wrote a rule to rename the interface, it looks like udev does the
> renaming after the end of the probe routine, which means we are printing
> the original netdev->name instead of the final one that udev sets.
>
> I thought that udev would be called during register_netdev (which we
> call in the probe routine). But, it seems it is actually called later.
> Is there any way to wait until udev is actually called? or to force it
> to rename before the end of the probe routine so that we can end the
> driver initialization by printing the final name of the interface?
>

udev is not called (in the sense of synchronous procedure call). 
register_netdev just sends notification about new interface; udev 
asynchronously processes this notification.

I am not aware of any way to wait for udev action completion. The only 
solution in your case seems to be long enough timeout (say several seconds) 
before printing interface name.

- -andrey
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