From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9A0244D9EF; Mon, 1 Apr 2024 16:52:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711990337; cv=none; b=FYyXDclfxysbFaLCJBMZU/RKyvvradLzgH9b8ztKHpSz6e0JEEgkPPjgpUhFb2T4XeETPRbh3as6V7jVPSPUNFkSaUi1JUYat8s7qeNaWvdG1BsjFU5eEPFcBlKs4/fTc2BkzynWWJsw8QQc62xhYPoE/mRNqJN5znEPnp0vmfg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711990337; c=relaxed/simple; bh=ZTkaVG/QUTpCDvarCwbkRUA0mlInjxWu0Q5y/cN20wM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NKBWZk5ZGAJxJSgSb4JcBkZhk/DHpJhOpQvWSVne1DTkSRMiNBDKjMTspPRCbOpkGa+cQ2VyIYXXeMd5Nk0WvHTKDWHbHJT4BCiXZqPd3Mxi0nDcqFR2M6/JfxLrxEDo27eo+rq1aq09A/kNlmTvqzGvr6T/3F+fKP6Mb7AEWg0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=pWyr7FWJ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="pWyr7FWJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 22A4EC433F1; Mon, 1 Apr 2024 16:52:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1711990337; bh=ZTkaVG/QUTpCDvarCwbkRUA0mlInjxWu0Q5y/cN20wM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pWyr7FWJxC4Kt99a4b3hGDyoWvbI2udp3o2i1MaZekSReSVHQZ0eSyAdEJWsrdZ6c c6TKdBcSKHRcLQ9wgkcOOapdiSQ5pUdQsbcd2ZiL/uYeoCX9NmL/+Mhe9sXRHU7LbE uUoADH1eWpEq4ZaQ+8T6IOkpccfcqdsEH2TaL+fA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Johannes Berg Subject: [PATCH 6.6 321/396] wifi: cfg80211: add a flag to disable wireless extensions Date: Mon, 1 Apr 2024 17:46:10 +0200 Message-ID: <20240401152557.483743114@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240401152547.867452742@linuxfoundation.org> References: <20240401152547.867452742@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johannes Berg commit be23b2d7c3b7c8bf57b1cf0bf890bd65df9d0186 upstream. Wireless extensions are already disabled if MLO is enabled, given that we cannot support MLO there with all the hard- coded assumptions about BSSID etc. However, the WiFi7 ecosystem is still stabilizing, and some devices may need MLO disabled while that happens. In that case, we might end up with a device that supports wext (but not MLO) in one kernel, and then breaks wext in the future (by enabling MLO), which is not desirable. Add a flag to let such drivers/devices disable wext even if MLO isn't yet enabled. Cc: stable@vger.kernel.org Link: https://msgid.link/20240314110951.b50f1dc4ec21.I656ddd8178eedb49dc5c6c0e70f8ce5807afb54f@changeid Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman --- include/net/cfg80211.h | 2 ++ net/wireless/wext-core.c | 7 +++++-- 2 files changed, 7 insertions(+), 2 deletions(-) --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -4816,6 +4816,7 @@ struct cfg80211_ops { * @WIPHY_FLAG_SUPPORTS_EXT_KCK_32: The device supports 32-byte KCK keys. * @WIPHY_FLAG_NOTIFY_REGDOM_BY_DRIVER: The device could handle reg notify for * NL80211_REGDOM_SET_BY_DRIVER. + * @WIPHY_FLAG_DISABLE_WEXT: disable wireless extensions for this device */ enum wiphy_flags { WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK = BIT(0), @@ -4827,6 +4828,7 @@ enum wiphy_flags { WIPHY_FLAG_4ADDR_STATION = BIT(6), WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), WIPHY_FLAG_IBSS_RSN = BIT(8), + WIPHY_FLAG_DISABLE_WEXT = BIT(9), WIPHY_FLAG_MESH_AUTH = BIT(10), WIPHY_FLAG_SUPPORTS_EXT_KCK_32 = BIT(11), /* use hole at 12 */ --- a/net/wireless/wext-core.c +++ b/net/wireless/wext-core.c @@ -4,6 +4,7 @@ * Authors : Jean Tourrilhes - HPL - * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved. * Copyright 2009 Johannes Berg + * Copyright (C) 2024 Intel Corporation * * (As all part of the Linux kernel, this file is GPL) */ @@ -662,7 +663,8 @@ struct iw_statistics *get_wireless_stats dev->ieee80211_ptr->wiphy->wext && dev->ieee80211_ptr->wiphy->wext->get_wireless_stats) { wireless_warn_cfg80211_wext(); - if (dev->ieee80211_ptr->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) + if (dev->ieee80211_ptr->wiphy->flags & (WIPHY_FLAG_SUPPORTS_MLO | + WIPHY_FLAG_DISABLE_WEXT)) return NULL; return dev->ieee80211_ptr->wiphy->wext->get_wireless_stats(dev); } @@ -704,7 +706,8 @@ static iw_handler get_handler(struct net #ifdef CONFIG_CFG80211_WEXT if (dev->ieee80211_ptr && dev->ieee80211_ptr->wiphy) { wireless_warn_cfg80211_wext(); - if (dev->ieee80211_ptr->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) + if (dev->ieee80211_ptr->wiphy->flags & (WIPHY_FLAG_SUPPORTS_MLO | + WIPHY_FLAG_DISABLE_WEXT)) return NULL; handlers = dev->ieee80211_ptr->wiphy->wext; }