Patrick McHardy wrote:
> François Valenduc wrote:
>> I did the bisection again, this time on the whole tree and the first 
>> bad commit is again the one I mentioned previously:
>>
>> 175f9c1bba9b825d22b142d183c9e175488b260c is first bad commit
>> commit 175f9c1bba9b825d22b142d183c9e175488b260c
>> Author: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
>> Date:   Sun Jul 20 00:08:47 2008 -0700
>>
>>    net_sched: Add size table for qdiscs
>>
>>    Add size table functions for qdiscs and calculate packet size in
>>    qdisc_enqueue().
>>
>>    Based on patch by Patrick McHardy
>>     http://marc.info/?l=linux-netdev&m=115201979221729&w=2
>>
>> This time, I didn't encounter kernels which didn't compile. So, I 
>> didn't use git-reset or git-bisect skip.
> 
> 
> I think I know whats happening (Jussi CCed). That commit introduced
> a qdisc_skb_cb, which conflicts with the mac80211 usage of skb->cb.
> mac80211 seems to expect the CB to survive the qdisc layer, which
> is wrong. One possibility to fix this (or just test my theory)
> would be to make sure they don't clash by adding the struct
> ieee80211_tx_info to qdisc_skb_cb->data. Something like this patch.
> 

 > +#include <net/sched_generic.h>

That should be sch_generic.h.