From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sipsolutions.net (s3.sipsolutions.net [168.119.38.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C3E6238CFFB for ; Thu, 16 Apr 2026 11:09:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=168.119.38.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776337789; cv=none; b=cSuyglK2jFLDCBWNwLaDHD0Vplj3YBX/1X0IVstmkwwV/pAMtoKIylAt/CYFGjQb+ap3FzBpVnXTKTVTkpXRiwBY3PYRedEHPrM4G8NF4JELKVL0ItOtb88sFIcYfBgQQng74usRDgXUqPCPP2AueoJzRiDbtqP+MVT5QMRwxSg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776337789; c=relaxed/simple; bh=dhwSJ8E4rJx7rF70sKZt5F5PzgEr3XpjDN0PTz3AnAI=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=sLtsDu2KElKUoo9s9vlli4AQTNIl1q1Il66C1oiCwynL69N1JJKcBlQBsiQUKmnmHlZHoVwrlVO4JmYw5er6yqM4mGuc0gJYzGHclHRdewimgUNz43VG/Ih3ojc97B2roDRjtCcpQ9uvFh0lVf8Q/vAaprNGlL9AhQ5/y9yvQD8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sipsolutions.net; spf=pass smtp.mailfrom=sipsolutions.net; dkim=pass (2048-bit key) header.d=sipsolutions.net header.i=@sipsolutions.net header.b=oJNoYTQc; arc=none smtp.client-ip=168.119.38.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sipsolutions.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sipsolutions.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sipsolutions.net header.i=@sipsolutions.net header.b="oJNoYTQc" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sipsolutions.net; s=mail; h=MIME-Version:Content-Transfer-Encoding: Content-Type:References:In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-To: Resent-Cc:Resent-Message-ID; bh=jDjpf0jAxRqIFAPIzyoNs5a4Fd8Q5S6uZ9jZ5xWPmXw=; t=1776337787; x=1777547387; b=oJNoYTQcejFn6sUgjwjAr6KsLm71z4DLVpc6ouNn6s6rpFN oFCtTKmKWbloUA8Vt6GVr5eG61N4V8IwJKsft+7vbz1W5zHZ5jn97nKv+Oq7jIuXnIYN4M7hILpvN riknHnlupuObJ0u6PkOFO6Sl/gjIJVoNEaBBr7ZL4anzmpOUn9kOzWDR+Tzx8AQO6SRHlCPq4o8VI KkttqENzyD7bdUT11LAcndfXylLb0ghSVsDOy3dMpD/7an+MNqKbO3hA7fjlNKBBjK9TDOR7A9PI7 /B1YatoJt00oHkP3RJXJn+IbEVxjzc/18glx+E0FXkXWPGg0MIJ8O6pUKnJnvDKw==; Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.98.2) (envelope-from ) id 1wDKbL-00000007OYm-0aPG; Thu, 16 Apr 2026 13:09:39 +0200 Message-ID: Subject: Re: Wi-Fi speeds degrade from 600Mps to 30Mps while using WPA2 security, but not on open network, shortly after ISP firmware upgrade. From: Johannes Berg To: Benson Bear , Pablo MARTIN-GOMEZ Cc: linux-wireless@vger.kernel.org Date: Thu, 16 Apr 2026 13:09:38 +0200 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.3 (3.58.3-1.fc43) Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-malware-bazaar: not-scanned On Thu, 2026-04-16 at 07:03 -0400, Benson Bear wrote: >=20 > (Sadly I think I might have an idea -- it's partly my fault. The > mac80211 module was disabling all HT and above because it > felt it could not meet the BCS criteria laid down by the AP. > Many people have thought these criteria were way too onerous. > So I first had very low speeds because of that. No HT even. > I applied a patch to the module that ignored these requirements > and got back to a high connection speed, and HE or VHT > enabled, and got back a little of the lost speed. Clearly very > kludgy but seems a legitimate response to what the patch > author called "aggressive basic MCS rates". But it may > have opened up the room for misunderstandings. I have my > speed back in practice, but I wonder what the "correct" way > of fixing this would be -- without the kludgy module patch). I think what you're referring to here might be this? https://lore.kernel.org/linux-wireless/99Mv9QEceyPrQhSP52MtAVmz0_kWJmzqotJj= D9YW6LGLqk-AZloAueUyHCURilFkuqOh6Ecv8i2KKdSE1ujP3AnbU5QEouVisT1w_V3xdfc=3D@= r26.me/ johannes