From: Marco Fonseca <marco@tampabay.rr.com>
To: linux-wireless@vger.kernel.org
Subject: iwlwifi: 8265: unexpected LLC packets TX'ed in monitor mode
Date: Wed, 13 May 2020 13:48:27 -0400 [thread overview]
Message-ID: <20200513174827.3o7odouinuirou62@192.168.1.10> (raw)
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.
Other Details
-------------
wifi chipset:
Intel(R) Dual Band Wireless AC 8265, REV=0x230
kernel:
4.9.11 kernel
backports driver:
iwlwifi-stack-public:release/core33:6653:327571a8
I can use other backports versions if needed, but this was the
version called out in:
https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/core_release
Firmware:
36.952d9faa.0
Thank you,
Marco Fonseca
next reply other threads:[~2020-05-13 17:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-13 17:48 Marco Fonseca [this message]
2020-05-25 9:23 ` iwlwifi: 8265: unexpected LLC packets TX'ed in monitor mode Johannes Berg
2020-05-28 14:26 ` Marco
2020-05-28 14:53 ` Johannes Berg
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