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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 A1CF5C35671 for ; Sun, 23 Feb 2020 02:34:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 735CF20659 for ; Sun, 23 Feb 2020 02:34:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582425286; bh=PtriBsXyW8kGTAqXSDy7UYBdHikaU5JTUnz/W1iCUdQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=aQqkONGZvordcE3XSVItN1xGHWH90+BsHpYD44IMT2SvjHqlUT7QBDq1Cgc3KCfvh AGA6FHytqAk4Z5ziSC78kjUjk4tZA5LkD+wmXjcx8OgQ/d1+KYPzgRgjnmL7TioOHV TcWBvStEeDpAQlZjIHbIFt0m35C3sGHFQTnSlFG0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728877AbgBWCeo (ORCPT ); Sat, 22 Feb 2020 21:34:44 -0500 Received: from mail.kernel.org ([198.145.29.99]:51360 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728130AbgBWCWX (ORCPT ); Sat, 22 Feb 2020 21:22:23 -0500 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 053F2208C3; Sun, 23 Feb 2020 02:22:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582424542; bh=PtriBsXyW8kGTAqXSDy7UYBdHikaU5JTUnz/W1iCUdQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=X932TZecS8SDghWmK/+lVskKiKGwIihu8IgZkI6/x1Bt/xLH8PSDwmY9PKXCq/AoB D17uu74H7nx/pr/CvY9njxyOw8CC7Zi7D4vR8becgIZXn6RhhuKEgcuIvQzYqYwsLp 0cC4BDJ0owhzrctgdVHHl1D+nJVWbphhI+qkmbHc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Shay Bar , Aviad Brikman , Johannes Berg , Sasha Levin , linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 5.5 52/58] mac80211: fix wrong 160/80+80 MHz setting Date: Sat, 22 Feb 2020 21:21:13 -0500 Message-Id: <20200223022119.707-52-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200223022119.707-1-sashal@kernel.org> References: <20200223022119.707-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Shay Bar [ Upstream commit 33181ea7f5a62a17fbe55f0f73428ecb5e686be8 ] Before this patch, STA's would set new width of 160/80+80 MHz based on AP capability only. This is wrong because STA may not support > 80MHz BW. Fix is to verify STA has 160/80+80 MHz capability before increasing its width to > 80MHz. The "support_80_80" and "support_160" setting is based on: "Table 9-272 — Setting of the Supported Channel Width Set subfield and Extended NSS BW Support subfield at a STA transmitting the VHT Capabilities Information field" >From "Draft P802.11REVmd_D3.0.pdf" Signed-off-by: Aviad Brikman Signed-off-by: Shay Bar Link: https://lore.kernel.org/r/20200210130728.23674-1-shay.bar@celeno.com Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/mac80211/util.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 739e90555d8b9..decd46b383938 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -2993,10 +2993,22 @@ bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, int cf0, cf1; int ccfs0, ccfs1, ccfs2; int ccf0, ccf1; + u32 vht_cap; + bool support_80_80 = false; + bool support_160 = false; if (!oper || !htop) return false; + vht_cap = hw->wiphy->bands[chandef->chan->band]->vht_cap.cap; + support_160 = (vht_cap & (IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK | + IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)); + support_80_80 = ((vht_cap & + IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) || + (vht_cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && + vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) || + ((vht_cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >> + IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1)); ccfs0 = oper->center_freq_seg0_idx; ccfs1 = oper->center_freq_seg1_idx; ccfs2 = (le16_to_cpu(htop->operation_mode) & @@ -3024,10 +3036,10 @@ bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, unsigned int diff; diff = abs(ccf1 - ccf0); - if (diff == 8) { + if ((diff == 8) && support_160) { new.width = NL80211_CHAN_WIDTH_160; new.center_freq1 = cf1; - } else if (diff > 8) { + } else if ((diff > 8) && support_80_80) { new.width = NL80211_CHAN_WIDTH_80P80; new.center_freq2 = cf1; } -- 2.20.1