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mac80211: AQM and block_tx

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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.

Kind regards,
	Sven

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