From patchwork Fri Apr 24 22:41:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajkumar Manoharan X-Patchwork-Id: 215840 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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, 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 F2C51C55191 for ; Fri, 24 Apr 2020 22:42:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D472820728 for ; Fri, 24 Apr 2020 22:42:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="KuoBvfvP" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726101AbgDXWma (ORCPT ); Fri, 24 Apr 2020 18:42:30 -0400 Received: from mail26.static.mailgun.info ([104.130.122.26]:57358 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726070AbgDXWm3 (ORCPT ); Fri, 24 Apr 2020 18:42:29 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1587768149; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=cheA3LCyJJRur1FCaizcxQDlGa3ekuGU1bw9Vi/c/XE=; b=KuoBvfvPP1Ags7a8qTFwn2TD5VU9Sji0ion9Df6ECIUq6ThYagAgYJi0LX9nMyq5JZzsO1Fb C6LeA8cjwPIMuHQRetbdOfzuyKash/CFzZGJONu1hx6d1+ekUZXDbjIiPZc6fZWCRsN+Q1Gh iwSmf8jn+xfTk2edGfisk4a6YkM= X-Mailgun-Sending-Ip: 104.130.122.26 X-Mailgun-Sid: WyI3YTAwOSIsICJsaW51eC13aXJlbGVzc0B2Z2VyLmtlcm5lbC5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5ea36b46.7fbb8aea0ab0-smtp-out-n04; Fri, 24 Apr 2020 22:42:14 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id B7F6BC433D2; Fri, 24 Apr 2020 22:42:14 +0000 (UTC) Received: from rmanohar-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: rmanohar) by smtp.codeaurora.org (Postfix) with ESMTPSA id 1B279C433CB; Fri, 24 Apr 2020 22:42:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 1B279C433CB Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=rmanohar@codeaurora.org From: Rajkumar Manoharan To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Rajkumar Manoharan Subject: [PATCH 02/10] cfg80211: validate 6 GHz chandef Date: Fri, 24 Apr 2020 15:41:40 -0700 Message-Id: <1587768108-25248-3-git-send-email-rmanohar@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1587768108-25248-1-git-send-email-rmanohar@codeaurora.org> References: <1587768108-25248-1-git-send-email-rmanohar@codeaurora.org> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Validate the params of set_channel against 6 GHz frequency range and bandwidth allowed. Signed-off-by: Rajkumar Manoharan --- include/net/cfg80211.h | 14 ++++++++++++++ net/wireless/chan.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 60 insertions(+) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 70e48f66dac8..13d3d8f92c99 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -730,6 +730,20 @@ cfg80211_chandef_is_edmg(const struct cfg80211_chan_def *chandef) } /** + * cfg80211_chandef_is_6ghz - check if chandef represents an 6 GHz channel + * + * @chandef: the channel definition + * + * Return: %true if frequency is in 6 GHz range, %false otherwise. + */ +static inline bool +cfg80211_chandef_is_6ghz(const struct cfg80211_chan_def *chandef) +{ + return (chandef->center_freq1 > 5940 && chandef->center_freq1 < 7105); +} + + +/** * cfg80211_chandef_compatible - check if two channel definitions are compatible * @chandef1: first channel definition * @chandef2: second channel definition diff --git a/net/wireless/chan.c b/net/wireless/chan.c index fcac5c6366e1..42d27cada237 100644 --- a/net/wireless/chan.c +++ b/net/wireless/chan.c @@ -19,6 +19,29 @@ static bool cfg80211_valid_60g_freq(u32 freq) return freq >= 58320 && freq <= 70200; } +static bool cfg80211_is_6ghz_freq(u32 freq) +{ + return (freq > 5940 && freq < 7105); +} + +static enum nl80211_chan_width cfg80211_chan_to_bw_6ghz(u8 idx) +{ + /* channels: 1, 5, 9, 13... */ + if ((idx & 0x3) == 0x1) + return NL80211_CHAN_WIDTH_20; + /* channels 3, 11, 19... */ + if ((idx & 0x7) == 0x3) + return NL80211_CHAN_WIDTH_40; + /* channels 7, 23, 39.. */ + if ((idx & 0xf) == 0x7) + return NL80211_CHAN_WIDTH_80; + /* channels 15, 47, 79...*/ + if ((idx & 0x1f) == 0xf) + return NL80211_CHAN_WIDTH_160; + + return NL80211_CHAN_WIDTH_20; +} + void cfg80211_chandef_create(struct cfg80211_chan_def *chandef, struct ieee80211_channel *chan, enum nl80211_channel_type chan_type) @@ -139,6 +162,25 @@ static bool cfg80211_edmg_chandef_valid(const struct cfg80211_chan_def *chandef) return true; } +static bool cfg80211_6ghz_chandef_valid(const struct cfg80211_chan_def *chandef) +{ + enum nl80211_chan_width bw; + int chan_idx; + + if (!cfg80211_is_6ghz_freq(chandef->center_freq1)) + return false; + + chan_idx = ieee80211_frequency_to_channel(chandef->center_freq1); + if (chan_idx <= 0) + return false; + + bw = cfg80211_chan_to_bw_6ghz(chan_idx); + if (bw != chandef->width) + return false; + + return true; +} + bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef) { u32 control_freq; @@ -213,6 +255,10 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef) !cfg80211_edmg_chandef_valid(chandef)) return false; + if (cfg80211_chandef_is_6ghz(chandef) && + !cfg80211_6ghz_chandef_valid(chandef)) + return false; + return true; } EXPORT_SYMBOL(cfg80211_chandef_valid);