From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 033F0C4363D for ; Thu, 24 Sep 2020 13:15:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 95F4F20758 for ; Thu, 24 Sep 2020 13:15:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="tuBKXzGX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727850AbgIXNPq (ORCPT ); Thu, 24 Sep 2020 09:15:46 -0400 Received: from z5.mailgun.us ([104.130.96.5]:40120 "EHLO z5.mailgun.us" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727846AbgIXNPq (ORCPT ); Thu, 24 Sep 2020 09:15:46 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1600953346; h=Date: Message-Id: Cc: To: References: In-Reply-To: From: Subject: Content-Transfer-Encoding: MIME-Version: Content-Type: Sender; bh=G/pobf+eXErdOYtD3b7hJ+MdOcPjBKqHww1ZUz/A+Y0=; b=tuBKXzGXbtPe18fkt+CPfbtEhWnkWH3RZCutHKB05/+icVZIzCuVHaKwk6dCHh/IGDCy6oAv rYmp6uGnxWaoSpDyrL+mffcfDvl/Rf5eRZOkAZS2GCaeSfwTNyFTj0+9T+usyTwvXIMXE8Pz stKdh+8pJ5D6q9ULwVxX5ZpN5j4= X-Mailgun-Sending-Ip: 104.130.96.5 X-Mailgun-Sid: WyI3YTAwOSIsICJsaW51eC13aXJlbGVzc0B2Z2VyLmtlcm5lbC5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n07.prod.us-west-2.postgun.com with SMTP id 5f6c9becefb844e003b2296a (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 24 Sep 2020 13:15:24 GMT Sender: kvalo=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 82290C433C8; Thu, 24 Sep 2020 13:15:24 +0000 (UTC) Received: from potku.adurom.net (88-114-240-156.elisa-laajakaista.fi [88.114.240.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: kvalo) by smtp.codeaurora.org (Postfix) with ESMTPSA id 36986C433CA; Thu, 24 Sep 2020 13:15:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 36986C433CA Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=kvalo@codeaurora.org Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: Re: [PATCH 5.9] mt76: mt7615: reduce maximum VHT MPDU length to 7991 From: Kalle Valo In-Reply-To: <20200923052442.24141-1-nbd@nbd.name> References: <20200923052442.24141-1-nbd@nbd.name> To: Felix Fietkau Cc: linux-wireless@vger.kernel.org User-Agent: pwcli/0.1.0-git (https://github.com/kvalo/pwcli/) Python/3.5.2 Message-Id: <20200924131524.82290C433C8@smtp.codeaurora.org> Date: Thu, 24 Sep 2020 13:15:24 +0000 (UTC) Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Felix Fietkau wrote: > After fixing mac80211 to allow larger A-MSDUs in some cases, there have been > reports of performance regressions and packet loss with some clients. > It appears that the issue occurs when the hardware is transmitting A-MSDUs > bigger than 8k. Limit the local VHT MPDU size capability to 7991, matching > the value used for MT7915 as well. > > Signed-off-by: Felix Fietkau Patch applied to wireless-drivers.git, thanks. efb1676306f6 mt76: mt7615: reduce maximum VHT MPDU length to 7991 -- https://patchwork.kernel.org/patch/11793855/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches