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=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 CF5B3C43457 for ; Mon, 12 Oct 2020 19:03:04 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6DEA7214DB for ; Mon, 12 Oct 2020 19:03:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="uSUzp7ca"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="iGR0DTQC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6DEA7214DB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=jTs3Mf2dSTcJcyKVJEj/v45WstLEBggwzJgZWVORRFQ=; b=uSUzp7caFcRgnla6J3K/cQ4Ev k0GIr0y+qJUj8+IttkGrPg0REJRtiiKRcfRv6ltWYsodl1ohRe48yyMwgXspKnnC2fGQdpAg8SMp7 Y5KPeOaLrq9vw6xQYGyjShV31q79KRI4e0VP1bfrL2W8yQfU+7UHz+xLu99mtk66Rp/ciWSyq4zXd RuxrxNOslaQv68oUyqw7rllifuIM0Pnobh6O8V08Io7riom7jofHqUwcNxxLRk7jLXN1Tf5u8hTug j+mqhKkO4piOSAjWwZom533AQB7HlyZGXd41xWx/F50JPl+2FtkFai1d3p/AshetJSkMHh5SIvWjV 9yTIvFyAQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kS360-0000G0-2D; Mon, 12 Oct 2020 19:02:56 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kS35t-0000Dn-Jj; Mon, 12 Oct 2020 19:02:50 +0000 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5FA89208D5; Mon, 12 Oct 2020 19:02:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1602529368; bh=QRWbLLlc5LX4W6tV/eifgyen0KK9C7vxrps4PQ+Cm0k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iGR0DTQCbeOzyqgztIr+ENvLRGoi0Pp5AcYYzaNKAXwHP6dkkGrXlpPayZP+we249 kXiKO8GMuJVfRI6X5rZ0vsvXanaqoCgDkPVEZ1XM5X9bNOgWW/hdHzK0pq6SiDUv5V ea+R3bApGjVqTPnZ4ML2xwDnBh8gjUHRieVxgdFk= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.8 06/24] mt76: mt7615: reduce maximum VHT MPDU length to 7991 Date: Mon, 12 Oct 2020 15:02:21 -0400 Message-Id: <20201012190239.3279198-6-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201012190239.3279198-1-sashal@kernel.org> References: <20201012190239.3279198-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201012_150249_723569_CF43C684 X-CRM114-Status: GOOD ( 14.10 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sasha Levin , netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-mediatek@lists.infradead.org, Kalle Valo , linux-arm-kernel@lists.infradead.org, Felix Fietkau Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Felix Fietkau [ Upstream commit efb1676306f664625c0c546dd10d18d33c75e3fc ] 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 Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20200923052442.24141-1-nbd@nbd.name Signed-off-by: Sasha Levin --- drivers/net/wireless/mediatek/mt76/mt7615/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c index e2d80518e5af9..992a36602ad4c 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c @@ -453,7 +453,7 @@ void mt7615_init_device(struct mt7615_dev *dev) dev->mphy.sband_2g.sband.ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING; dev->mphy.sband_5g.sband.ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING; dev->mphy.sband_5g.sband.vht_cap.cap |= - IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 | + IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; mt7615_cap_dbdc_disable(dev); dev->phy.dfs_state = -1; -- 2.25.1 _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek