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Re: regression: tethering fails in 3.5 with iwlwifi

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On Mon, 2012-09-17 at 17:41 +0300, Artem Bityutskiy wrote:


> OK, finally I got it. After 3 days of hardcore intelligent bisecting
>         I've found out that tethering in 3.5 works for me if I revert
> these 2
>         patches:
>         
>             56138f5 iwlwifi: dont pull too much payload in skb head
>             3edaf3e mac80211: manage AP netdev carrier state

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.

johannes

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