Weekly Development report(Jan 16 ~ Jan 19) on the iwlwifi WiFi project

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From: Cheng Cui <cc_at_freebsd.org>
Date: Tue, 23 Jan 2024 00:22:47 UTC

I was still focusing on the problem in PR 276083
<https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276083> which caused a
timeout in iwlwifi firmware during 802.11n (11ng, 11na) association, thus
failing 11n association.

   1. The latest discovery shows that newer firmwares or older firmwares
   have the same symptom during 11ng association: the firmware crashes and HW
   cmd timeouts.
      - But the HW cmd from different FWs could be different that causes
      the same symptom.
      - So the problem could be in an earlier command or a missing command,
      or a flag, etc.
   2. Previously mentioned potential workaround in the PR is not working as
   the data path fails with firmware not able to re-start.
   3. Learning Driver API tracing (trace-cmd).
   4. Finished reviewing D43469.
   5. Committed MFC stable/14 in git: 404b91dac415
   <https://cgit.freebsd.org/src/commit/?id=404b91dac415c5c9126fb4201145049c4d3dfbba>
   .
   6. Had the second project monthly meeting on Jan 19, and talked with
   Bjoern and Joseph about the recent progress.

-- 
Best Regards,
Cheng Cui