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Thu, 8 Mar 2018 00:17:42 -0500 Received: from mail-bn3nam01on0104.outbound.protection.outlook.com ([104.47.33.104]:62624 "EHLO NAM01-BN3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S966452AbeCHFIm (ORCPT ); Thu, 8 Mar 2018 00:08:42 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Mohammed Shafi Shajakhan , Kalle Valo , Sasha Levin Subject: [PATCH AUTOSEL for 3.18 18/53] ath: Fix updating radar flags for coutry code India Thread-Topic: [PATCH AUTOSEL for 3.18 18/53] ath: Fix updating radar flags for coutry code India Thread-Index: AQHTtprDebSBJkf6M0SzNNIFUwQbhw== Date: Thu, 8 Mar 2018 05:03:14 +0000 Message-ID: <20180308050230.8876-18-alexander.levin@microsoft.com> References: <20180308050230.8876-1-alexander.levin@microsoft.com> In-Reply-To: <20180308050230.8876-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB0871;7:ikkSXB9z6PLfci1TwcD1S0QQQcUn4QBTdW4Q8UGRpjSRkjsKeiVx2h6tEgLjiCB3MBKUwFxuOWoVnVHLzYIupEgf435LraOxSzBrjTeCI44JOL83ASJ4pDKGDAIVexslrd+THm5P9nIvANA8TWytKKTpcWJ/ePYu4P7nKj+WLgufPwfE6ty33pSYp4ggoBOg6/zRfNG7QVL8tB2dgHgApfQJ3rKdBEwJNVtuQXCzIjFqCcxM9zOTwyJJZq0uPySr;20:MSB7sBLxkMWJdJeLI3G6xc73uTA+lqWVhg/OfE9Cz05vkkX+C1+TGY+kISICcdG6wkFtG+bHVv3UogxQHtpblzsEL3FC6IKb0nVo3kyxEfn/Hz94+ybvmydMt1zKYok08ewzcoBoR6WNKkZ6taz+8nFC9kwDG2HyTSw7bqiZwUk= x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: f823063d-2527-4028-de31-08d584b2a7a4 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB0871; 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x-microsoft-antispam-message-info: dOJ52+tNnnUzKGk9V2fjd/g4dYDYfUoo61XYm9qr7MDqMwL2HhM4f6VgxEBniekvV0xC/sW29Q6GD397IHlzmaRtUSKf7PtOHtt9mn7spbZKlAPKSkC/vchBNjnDpXVpguEKzSpwMeKK4wFobh9evRQmUlTJOOqD9ggTq9o9gOXeOXES18zOX+kvbISjq5RKda6ASiqMijvEMigo8ur0fIn0kP4cL7LX62u/omBLgmFGpXQWGz0SCeWcElnidP0Rz2p3/4Lej48Kmescn3gcGndx8hqs1IW5Ms28HNEuimi9x96wgU/xJJ/NWHIMFdt0VlPxr3oGSKrWc5gMHeatow== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: f823063d-2527-4028-de31-08d584b2a7a4 X-MS-Exchange-CrossTenant-originalarrivaltime: 08 Mar 2018 05:03:14.7094 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0871 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Mohammed Shafi Shajakhan [ Upstream commit c0c345d4cacc6a1f39d4856f37dcf6e34f51a5e4 ] As per latest regulatory update for India, channel 52, 56, 60, 64 is no longer restricted to DFS. Enabling DFS/no infra flags in driver results in applying all DFS related restrictions (like doing CAC etc before this channel moves to 'available state') for these channels even though the country code is programmed as 'India' in he hardware, fix this by relaxing the frequency range while applying RADAR flags only if the country code is programmed to India. If the frequency range needs to modified based on different country code, ath_is_radar_freq can be extended/modified dynamically. Signed-off-by: Mohammed Shafi Shajakhan Signed-off-by: Kalle Valo Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/regd.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/ath/regd.c b/drivers/net/wireless/ath/reg= d.c index 06ea6cc9e30a..62077bda8dde 100644 --- a/drivers/net/wireless/ath/regd.c +++ b/drivers/net/wireless/ath/regd.c @@ -254,8 +254,12 @@ bool ath_is_49ghz_allowed(u16 regdomain) EXPORT_SYMBOL(ath_is_49ghz_allowed); =20 /* Frequency is one where radar detection is required */ -static bool ath_is_radar_freq(u16 center_freq) +static bool ath_is_radar_freq(u16 center_freq, + struct ath_regulatory *reg) + { + if (reg->country_code =3D=3D CTRY_INDIA) + return (center_freq >=3D 5500 && center_freq <=3D 5700); return (center_freq >=3D 5260 && center_freq <=3D 5700); } =20 @@ -306,7 +310,7 @@ __ath_reg_apply_beaconing_flags(struct wiphy *wiphy, enum nl80211_reg_initiator initiator, struct ieee80211_channel *ch) { - if (ath_is_radar_freq(ch->center_freq) || + if (ath_is_radar_freq(ch->center_freq, reg) || (ch->flags & IEEE80211_CHAN_RADAR)) return; =20 @@ -395,8 +399,9 @@ ath_reg_apply_ir_flags(struct wiphy *wiphy, } } =20 -/* Always apply Radar/DFS rules on freq range 5260 MHz - 5700 MHz */ -static void ath_reg_apply_radar_flags(struct wiphy *wiphy) +/* Always apply Radar/DFS rules on freq range 5500 MHz - 5700 MHz */ +static void ath_reg_apply_radar_flags(struct wiphy *wiphy, + struct ath_regulatory *reg) { struct ieee80211_supported_band *sband; struct ieee80211_channel *ch; @@ -409,7 +414,7 @@ static void ath_reg_apply_radar_flags(struct wiphy *wip= hy) =20 for (i =3D 0; i < sband->n_channels; i++) { ch =3D &sband->channels[i]; - if (!ath_is_radar_freq(ch->center_freq)) + if (!ath_is_radar_freq(ch->center_freq, reg)) continue; /* We always enable radar detection/DFS on this * frequency range. Additionally we also apply on @@ -505,7 +510,7 @@ void ath_reg_notifier_apply(struct wiphy *wiphy, struct ath_common *common =3D container_of(reg, struct ath_common, regulatory); /* We always apply this */ - ath_reg_apply_radar_flags(wiphy); + ath_reg_apply_radar_flags(wiphy, reg); =20 /* * This would happen when we have sent a custom regulatory request @@ -653,7 +658,7 @@ ath_regd_init_wiphy(struct ath_regulatory *reg, } =20 wiphy_apply_custom_regulatory(wiphy, regd); - ath_reg_apply_radar_flags(wiphy); + ath_reg_apply_radar_flags(wiphy, reg); ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg); return 0; } --=20 2.14.1