Date: Mon, 29 Jan 2024 17:18:09 -0500 From: Cheng Cui <cc@freebsd.org> To: wireless@freebsd.org Subject: Weekly Development report(Jan 22 ~ Jan 26) on the iwlwifi WiFi project Message-ID: <CAGaXuiJDWDzYeWrvCgd9Rwc4B2Hwg8VOYQiqDnUBiKLcwbscjg@mail.gmail.com>
index | next in thread | raw e-mail
[-- Attachment #1 --] 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. Given the problem could be in an earlier command or a missing command, or a flag, etc, I am narrowing down the problem/learning scope. - Trying to print hcmds sequences together with some rx/tx calls and some mac80211_config_ops calls in Linux kernel. - With a separate monitor node to capture traffic packets in air, I am trying to understand the workflows near the 11ng hcmd (grp=5, cmd=22). - Most likely that hcmd is a response to an 802.11 management packet (Action code: Add Block Ack Request) after a success association in Linux, but I need to confirm. - Practicing trace-cmd in Linux kernel as well, the learning curve is long. - Bjoern offered help to take a look at the trace-cmd report as well. 2. Finished reviewing D43647 -- Best Regards, Cheng Cui [-- Attachment #2 --] <div dir="ltr"><div dir="ltr">I was still focusing on the problem in <a href="https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276083" target="_blank">PR 276083</a> which caused a timeout in iwlwifi firmware during 802.11n (11ng, 11na) association, thus failing 11n association.<br></div><div><ol><li>Given the problem could be in an earlier command or a missing command, or a flag, etc, I am narrowing down the problem/learning scope.</li><ul><li>Trying to print hcmds sequences together with some rx/tx calls and some mac80211_config_ops calls in Linux kernel.<br></li><li>With a separate monitor node to capture traffic packets in air, I am trying to understand the workflows near the 11ng hcmd (grp=5, cmd=22).</li><li>Most likely that hcmd is a response to an 802.11 management packet (Action code: Add Block Ack Request) after a success association in Linux, but I need to confirm.</li><li>Practicing trace-cmd in Linux kernel as well, the learning curve is long.</li><li>Bjoern offered help to take a look at the trace-cmd report as well.</li></ul><li style="margin-left:15px">Finished reviewing D43647</li></ol></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div></div>Best Regards,<div>Cheng Cui</div></div></div></div>home | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAGaXuiJDWDzYeWrvCgd9Rwc4B2Hwg8VOYQiqDnUBiKLcwbscjg>