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Re: regression: tethering fails in 3.5 with iwlwifi

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On Tue, 2012-09-18 at 11:40 +0300, Artem Bityutskiy wrote:
> On Tue, 2012-09-18 at 09:09 +0200, Johannes Berg wrote:
> > Hm. This is curious. *How* does AP mode fail? You said earlier stations
> > failed to connect, but can they actually get associated? I'm curious
> > because while I could see the carrier state thing causing issues (on old
> > hostapd versions that we didn't test), I'm not sure I see how the skb
> > payload makes a difference since mac80211 will linearize management
> > frames (so association should work) and data frames don't matter (so
> > authorization should work) ... unless there's a bug somewhere in
> > mac80211 where it forgets to pskb_may_pull(), but I don't see any such
> > place right now.
> 
> I am not sure what happens. In the failure case the high-level symptom
> (in NetwokManager or in Windows) is that "failed to set IP address".
> I've captured 2 tcpdumps - for the working (those 2 patches reverted)
> and non-working cases (vanilla 3.5.4). I'll send them to you privately. 

Thanks. I just got that far as well, but I hadn't set up a DHCP
server ... I'll debug further, I just confirmed that association still
works.

johannes

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