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>
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--00000000000075da3a06101d07fc Content-Type: text/plain; charset="UTF-8" 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 --00000000000075da3a06101d07fc Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div dir=3D"ltr">I was still focusing on the problem in=C2= =A0<a href=3D"https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D276083" t= arget=3D"_blank">PR 276083</a>=C2=A0which caused a timeout in iwlwifi firmw= are during 802.11n (11ng, 11na) association,=C2=A0thus failing 11n associat= ion.<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/lear= ning 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 tryin= g to understand the workflows near the 11ng hcmd (grp=3D5, cmd=3D22).</li><= li>Most likely that hcmd is a response to an 802.11 management packet (Acti= on 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=3D"margin-left:15px">Finished = reviewing=C2=A0D43647</li></ol></div><span class=3D"gmail_signature_prefix"= >-- </span><br><div dir=3D"ltr" class=3D"gmail_signature" data-smartmail=3D= "gmail_signature"><div dir=3D"ltr"><div></div>Best Regards,<div>Cheng Cui</= div></div></div></div> --00000000000075da3a06101d07fc--
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