From: Johannes Berg <johannes@sipsolutions.net>
To: Marco Fonseca <marco@tampabay.rr.com>, linux-wireless@vger.kernel.org
Subject: Re: iwlwifi: 8265: unexpected LLC packets TX'ed in monitor mode
Date: Mon, 25 May 2020 11:23:55 +0200 [thread overview]
Message-ID: <ca2b26a87d49284a07b24c71046993814c4fe821.camel@sipsolutions.net> (raw)
In-Reply-To: <20200513174827.3o7odouinuirou62@192.168.1.10> (sfid-20200513_195606_809894_A3639A1D)
On Wed, 2020-05-13 at 13:48 -0400, Marco Fonseca wrote:
> Hello,
>
> While in monitor mode, the 8265 will periodically transmit gratuitous
> LLC packets. In this mode, I would expect the wifi chipset to not
> transmit any packets at all (unless packet injection is being used).
>
> This behavior can be observed by a second wifi device in monitor mode.
> A display filter on wireshark/tshark of 'llc' makes these easy to spot.
>
> It seems these packets only get produced in presence of a few APs
> and/or STAs but I'm not sure of the exact cause. I don't see the LLC
> packets on very quiet channels.
I think these are somehow related to calibrations in the device.
johannes
next prev parent reply other threads:[~2020-05-25 9:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-13 17:48 iwlwifi: 8265: unexpected LLC packets TX'ed in monitor mode Marco Fonseca
2020-05-25 9:23 ` Johannes Berg [this message]
2020-05-28 14:26 ` Marco
2020-05-28 14:53 ` Johannes Berg
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