Date: Tue, 6 Feb 2024 09:24:11 -0500 From: Cheng Cui <cc@freebsd.org> To: wireless@freebsd.org Subject: Weekly Development report(Jan 29 ~ Feb 02) on the iwlwifi WiFi project Message-ID: <CAGaXuiLFqBD%2Br2_4k1tuL1B_9E7TwJWcgeUQL4Csp6md8NzgvA@mail.gmail.com>
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--0000000000002e4daf0610b75798 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>; last week, which caused a timeout in iwlwifi firmware during 802.11n (11ng, 11na) association, thus failing 11n association. But this problem may need a second help after I have to move it to a lower priority. 1. Given the problem could be in an earlier command or a missing command, or a flag, (a needle in a haystack), etc, I am narrowing down the problem/learning scope. - In discussion, Bjoern reached out in his contact and found some feedback about the problem which may be caused by a short hcmd size. - With the help of trace-cmd and some hex raw data dump in Linux/FreeBSD, in comparison we found the raw data in the specific hcmd (grp=5, cmd=22) was intact. So the hcmd size problem is highly likely ruled-out. - Further investigation from Bjoern showed the hcmd had reached the firmware and at least processed to some extent, but the answer didn't come back. - We decided to reach out to the contact again and hope there is some help/feedback. 2. Meanwhile, I am lowering down the priority of PR 276083 <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276083>, and focusing on remaining tasks. After discussion, I will work on some other TX/data path after disabling the ampdu_rx* case. 3. Finished reviewing D43646, D43635, D43512. -- Best Regards, Cheng Cui --0000000000002e4daf0610b75798 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=A0last week, which caused a timeout in iw= lwifi firmware during 802.11n (11ng, 11na) association,=C2=A0thus failing 1= 1n association. But this problem may need a second help after I have to mov= e it to a lower priority.<br></div><div><ol><li>Given the problem could be = in an earlier command or a missing command, or a flag,=C2=A0(a needle in a = haystack), etc, I am narrowing down the problem/learning scope.<br></li><ul= ><li>In discussion, Bjoern reached out in his contact and found some feedba= ck about the problem which may be caused by a short hcmd size.</li><li>With= the help of trace-cmd and some hex raw data dump in Linux/FreeBSD, in comp= arison we found the raw data in the specific hcmd (grp=3D5, cmd=3D22) was i= ntact. So the hcmd size problem is highly likely ruled-out.</li><li>Further= investigation from Bjoern showed the hcmd had reached the firmware and at = least processed to some extent, but the answer didn't come back.</li><l= i>We decided to reach out to the contact again and hope there is some help/= feedback.</li></ul><li>Meanwhile, I am lowering down the priority of=C2=A0<= a href=3D"https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D276083" targe= t=3D"_blank">PR 276083</a>, and focusing on remaining tasks. After discussi= on, I will work on some other TX/data path after disabling the ampdu_rx* ca= se.</li><li>Finished reviewing=C2=A0D43646, D43635, D43512.<br></li></ol></= div><div><br></div><span class=3D"gmail_signature_prefix">-- </span><br><di= v 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> --0000000000002e4daf0610b75798--
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