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Subject: Re: [PATCH v3 2/2] mac80211: Allow deleting stations in ibss mode to
 reset their state
To:     Koen Vandeputte <koen.vandeputte@ncentric.com>,
        Nicolas Cavallari <cavallar@lri.fr>,
        linux-wireless@vger.kernel.org
Cc:     Johannes Berg <johannes@sipsolutions.com>
References: <20200305135754.12094-1-cavallar@lri.fr>
 <20200305135754.12094-2-cavallar@lri.fr>
 <bc2934fe-ee0b-c593-e866-692487e06d4e@ncentric.com>
From:   Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Message-ID: <ff459a4c-9bf8-30e9-a486-86d171640e79@green-communications.fr>
Date:   Wed, 8 Apr 2020 16:31:10 +0200
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On 08/04/2020 13:56, Koen Vandeputte wrote:
> Quick test setup overview:
> 
> - Device mounted on top of a vessel, sailing around in windfarms.
> - Lots of turbines are equiped with 4x 90deg sectors
> - 802.11n HT40 2x2 custom mesh over IBSS, using Dynack
> - As the vessel moves around,  IBSS links are continuously dropped and
> re-added throughout the field
> - Output of my app, fyi:  https://pastebin.com/raw/vtZSwHC9
> 
> I've made 2 identical builds, one containing your patches and one without.
> 
> When your patches are used:
> 
> --> On devices with multiple radio's, all radio's went deaf within a few
> minutes without any notice in logs.
> 
> --> Only a reboot solved the issue but everything goes deaf again within
> a few minutes. (after dropping/adding some links)
> 
> 
> Any idea?

I would highly suspect the hasty wpa_supplicant patch more than the
kernel patches.

I suppose you don't have any wpa_supplicant verbose logs ? (with the -dd
option).

I don't have physical access to any hardware given the current crisis,
but if you could tell which kernel and wpa_supplicant version you
applied the patch on, and whether you took the patches from the mailing
list or from git including the cleanup patches.

Also, which driver/card did you use ? I mainly tested this with ath9k
with ar93xx.