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Wed, 26 Aug 2020 14:31:58 +0000 From: Shay Bar To: Johannes Berg Cc: linux-wireless@vger.kernel.org, aviad.brikman@celeno.com, eliav.farber@celeno.com Subject: [PATCH] wireless: fix wrong 160/80+80 MHz setting Date: Wed, 26 Aug 2020 17:31:39 +0300 Message-Id: <20200826143139.25976-1-shay.bar@celeno.com> X-Mailer: git-send-email 2.17.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AM3PR05CA0089.eurprd05.prod.outlook.com (2603:10a6:207:1::15) To VI1P192MB0479.EURP192.PROD.OUTLOOK.COM (2603:10a6:803:38::31) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (77.126.12.128) by AM3PR05CA0089.eurprd05.prod.outlook.com (2603:10a6:207:1::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3326.19 via Frontend Transport; Wed, 26 Aug 2020 14:31:56 +0000 X-Mailer: git-send-email 2.17.1 X-Originating-IP: [77.126.12.128] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 3fff7408-0c43-4dd2-1a32-08d849ccc981 X-MS-TrafficTypeDiagnostic: VE1P192MB0733: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2512; 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Based on: "Table 9-272 =E2=80=94 Setting of the Supported Channel Width Set subfield = and Extended NSS BW Support subfield at a STA transmitting the VHT Capabilities Information fie= ld" >From "Draft P802.11REVmd_D3.0.pdf" Signed-off-by: Aviad Brikman Signed-off-by: Shay Bar --- net/wireless/chan.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/net/wireless/chan.c b/net/wireless/chan.c index 90f0f82cd9ca..a51d11d3be33 100644 --- a/net/wireless/chan.c +++ b/net/wireless/chan.c @@ -912,6 +912,7 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy, struct ieee80211_sta_vht_cap *vht_cap; struct ieee80211_edmg *edmg_cap; u32 width, control_freq, cap; + bool support_80_80 =3D false; if (WARN_ON(!cfg80211_chandef_valid(chandef))) return false; @@ -979,9 +980,16 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy, return false; break; case NL80211_CHAN_WIDTH_80P80: - cap =3D vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MA= SK; + cap =3D vht_cap->cap; + support_80_80 =3D + ((cap & + IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ= ) || + (cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && + cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) || + ((cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) >> + IEEE80211_VHT_CAP_EXT_NSS_BW_SHIFT > 1)= ); if (chandef->chan->band !=3D NL80211_BAND_6GHZ && - cap !=3D IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80= MHZ) + !support_80_80) return false; /* fall through */ case NL80211_CHAN_WIDTH_80: @@ -1001,7 +1009,8 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy, return false; cap =3D vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MA= SK; if (cap !=3D IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && - cap !=3D IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80= MHZ) + cap !=3D IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80= MHZ && + !(vht_cap->cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)) return false; break; default: -- 2.17.1 ________________________________ The information transmitted is intended only for the person or entity to wh= ich it is addressed and may contain confidential and/or privileged material= . 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