On Wed, 2016-01-27 at 13:18 +0100, Johannes Berg wrote:
> > > + if (state == NETDEV_UNREGISTER)
> > > +         wireless_nlevent_flush();
> > > 
> > It could be argued that the state check isn't really necessary and
> > should be removed to avoid ordering issues with up/down vs. wext,
> > but
> > this fixes the really strange issue where you get an RTM_NEWLINK
> > after
> > RTM_DELLINK (with the same ifidx), and I don't see how any software
> > would care much about the ordering otherwise.
> > 
> 
> Actually though, with the fix I still get:
> 
> 5: wlan1: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group
> default 
>     link/ether 02:00:00:00:01:00 brd ff:ff:ff:ff:ff:ff
> 5: wlan1: <BROADCAST,MULTICAST,UP> 
>     link/ether 
> Deleted 5: wlan1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state
> DOWN group default 
>     link/ether 02:00:00:00:01:00 brd ff:ff:ff:ff:ff:ff
> 
> which is clearly odd (see the UP flag), so I'll change it.
> 

Doesn't help, since the wext netdev notifier is registered earlier and
thus runs earlier than the cfg80211 one that triggers the action ...

I'll fix that differently then.

johannes
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