WCN7850 disconnects and reconnects in a loop

[Baochen Qiang]

On 4/4/2024 11:41 PM, Gregoire Stein wrote:
> Hello,
> now i'm on the last commit of master-pending 
> (6.9.0-rc2-wt-ath-1-mainline-g853450ce5ca0)
> here are the various logs you asked for: 
> https://gist.github.com/GreyXor/927e7871e70630beabb522aeddc5891e

Thanks for the logs.

 From dmesg and NetworkManager logs, connection and EAPOL frames are 
good, but DHCP transaction fails. IWD logs show 'Del Station' event 
received after EAPOL is done. So guessing 3rd party triggers 'Del 
Station' due to some unkown reasons (DHCP session failed?).

In order to know who triggers 'Del Station', could you help reproduce 
this issue and collect mac80211/cfg80211 trace?

Below steps for your consideration:

1. enable tracing on mac80211/cfg80211
	# echo 1 > /sys/kernel/debug/tracing/events/cfg80211/enable
	# echo 1 > /sys/kernel/debug/tracing/events/mac80211/enable

2. recording trace to local file
	# cat /sys/kernel/debug/tracing/trace_pipe > trace.log

3. reproduce this issue

4. share full/verbose kernel/ath12k/IWD/NetworkManager logs, just like 
before, and trace log to us. Air sniffer logs are useful as well if 
possible.

> There are iwd, networkmanager and dmesg
> iwd is launched with -d and the ath12k module with the debug flag
> thanks
> 
And one more question, is this issue specific to AP? could you try other 
APs or could you try other client with this same AP? We can do 
comparison to narrow down.