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Re: mac80211: AQM and block_tx

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Sven Eckelmann <sven.eckelmann@xxxxxxxxxxxx> writes:

> On Donnerstag, 5. Juli 2018 10:47:11 CEST Sven Eckelmann wrote:
>> Hi Toke,
>> 
>> we are currently testing DFS with ath10k and noticed that AQM seems to ignore 
>> cfg80211_csa_settings->block_tx. Problem is now that the channel switch is 
>> started on a detected radar
>> 
>>   echo 1 >/sys/kernel/debug/ieee80211/phy1/ath10k/dfs_simulate_radar
>> 
>> NL80211_ATTR_CH_SWITCH_BLOCK_TX is set for the channel switch by hostapd but 
>> the AP still sends QoS data to the client.
>> 
>> Was there a fix for such a problem which I might have missed? I've just worked 
>> around that by setting wake_tx_queue TO NULL in ath10k. This still must be 
>> verified but at least I didn't see any packets anymore on a monitor interface.
>
>
> Just as information, the ath10k Dakota devices went through DFS
> certification

Cool! (I think? Not quite sure what the implications of passing / not
passing certification are?)

> but the AQM had to be disabled. Otherwise we would have had problems
> with the FCC closing time.

Hmm, too bad; but I guess this can be fixed :)

-Toke



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