Received: by 2002:a05:6a10:22f:0:0:0:0 with SMTP id 15csp164642pxk; Tue, 22 Sep 2020 22:57:18 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxtTeuX1rM9X+PYpOD2MWSEyjgxhLXL91NPOmAdBD29I1d7zVCnYQlICxVqwSUtghi6O7ci X-Received: by 2002:a17:906:86cd:: with SMTP id j13mr8564969ejy.5.1600840638520; Tue, 22 Sep 2020 22:57:18 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1600840638; cv=none; d=google.com; s=arc-20160816; b=EEu2zHCNW2DzFz9G7OKkNGS/ALOJ/Qwp3NHCJU/qkvPTdFYd4JqxKjzUNytGL4G+KR WjVcaDv/ivCHve0MhxLKEKTJILA9Gg/hWD2WSNT/FTA9PMbg22xM0I+ZkjeDz98Fr7sA bePUkDLhmftgrXqwRRW5UAlHN7cX3LImuKpGs6jmbALFV56b0LHAEvRl3pbgJ3Kk/Wwb 6Joo0FVGdqfjw1J+kxkZqrpVY2vlPMehWmHt3A8f+vcLg4KQD3LlTjhW8nIooDEzj/Cy ckvvtCm19o0eFXE2iQ5y+ka3T1OVdlXgG7mSVWH3iBMtsEb4mo5CqAS1fMaHFfjDEMCH kk1g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:user-agent:message-id:in-reply-to :date:references:subject:cc:to:from:dmarc-filter:sender :dkim-signature; bh=8gJeOxpLmK2L3t+U1TnHcEniQWu5rJBKiUI7aOGaKdw=; b=ZWyVv+LHmzALv0jt5BikCe3Tp7Vmk/flPzzCXrPez4eRwAgX94NvTprb2ttIBq00zu zhbUIKdjGPoe4rOtu01LsfFatINxJ85OzWSQmq6JqshALVaQSPtYxtJeHqHQwQaClcTi y2yvfy8yuIwmuj+bZqSR8w8ZiGVQMTMdnke4hUgpZ5dZlmwij9o1NPp7YjAhi7L8DD6A znV5QpjGBsWeFpiBaP8c9cxcctQTCiomG7iKi7VouHnjTnreASGXUCPl+M3lcBcMDKkj qJyhPJSrc1JiOxNKd2LCI7p66FKaF/EXyXvJTXm7m9t4bcfVXb/FPuNOGw12yIBocffH yRNw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@mg.codeaurora.org header.s=smtp header.b=TDN3IeL0; spf=pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-wireless-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id v16si10130208ejk.553.2020.09.22.22.56.39; Tue, 22 Sep 2020 22:57:18 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@mg.codeaurora.org header.s=smtp header.b=TDN3IeL0; spf=pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-wireless-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726557AbgIWF4a (ORCPT + 99 others); Wed, 23 Sep 2020 01:56:30 -0400 Received: from m42-4.mailgun.net ([69.72.42.4]:42744 "EHLO m42-4.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726179AbgIWF4a (ORCPT ); Wed, 23 Sep 2020 01:56:30 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1600840589; h=Content-Type: MIME-Version: Message-ID: In-Reply-To: Date: References: Subject: Cc: To: From: Sender; bh=8gJeOxpLmK2L3t+U1TnHcEniQWu5rJBKiUI7aOGaKdw=; b=TDN3IeL02PuQxgdF7EPSTL9z0McPMSJB8VKoUttNp6kYOF3TwVLC3YliGfFGELyevbyL4pmE yIev8P7YGcbICvveYwjW1An49tSjep7up8i3iR+Up/kO7oqQhwcIn69MxbGIisrYQ5RxRfUF YMqRbbOk2YdQ3ytJJA5E4qqD8xo= X-Mailgun-Sending-Ip: 69.72.42.4 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-n05.prod.us-east-1.postgun.com with SMTP id 5f6ae37e722ceb032700eafd (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Wed, 23 Sep 2020 05:56:14 GMT Sender: kvalo=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 1F810C433CB; Wed, 23 Sep 2020 05:56:14 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=ALL_TRUSTED,BAYES_00,SPF_FAIL, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from potku.adurom.net (88-114-240-156.elisa-laajakaista.fi [88.114.240.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: kvalo) by smtp.codeaurora.org (Postfix) with ESMTPSA id AA757C433CA; Wed, 23 Sep 2020 05:56:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org AA757C433CA 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 From: Kalle Valo To: Felix Fietkau Cc: linux-wireless@vger.kernel.org Subject: Re: [PATCH 5.9] mt76: mt7615: reduce maximum VHT MPDU length to 7991 References: <20200923052442.24141-1-nbd@nbd.name> Date: Wed, 23 Sep 2020 08:56:10 +0300 In-Reply-To: <20200923052442.24141-1-nbd@nbd.name> (Felix Fietkau's message of "Wed, 23 Sep 2020 07:24:42 +0200") Message-ID: <87blhxxchx.fsf@codeaurora.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Felix Fietkau writes: > 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 I'm planning to queue this to v5.9 and I assigned the patch to me in patchwork. -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches