linux-kernel - [PATCH V6 3/9] cfg80211: expose nl80211_chan_width_to

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Message-ID: <20230710083641.2132264-4-evan.quan@amd.com>
Date:   Mon, 10 Jul 2023 16:36:35 +0800
From:   Evan Quan <evan.quan@....com>
To:     <rafael@...nel.org>, <lenb@...nel.org>,
        <Alexander.Deucher@....com>, <Christian.Koenig@....com>,
        <Xinhui.Pan@....com>, <airlied@...il.com>, <daniel@...ll.ch>,
        <johannes@...solutions.net>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
        <Mario.Limonciello@....com>, <mdaenzer@...hat.com>,
        <maarten.lankhorst@...ux.intel.com>, <tzimmermann@...e.de>,
        <hdegoede@...hat.com>, <jingyuwang_vip@....com>,
        <Lijo.Lazar@....com>, <jim.cromie@...il.com>,
        <bellosilicio@...il.com>, <andrealmeid@...lia.com>,
        <trix@...hat.com>, <jsg@....id.au>, <arnd@...db.de>,
        <andrew@...n.ch>
CC:     <linux-kernel@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
        <amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
        <linux-wireless@...r.kernel.org>, <netdev@...r.kernel.org>,
        Evan Quan <evan.quan@....com>
Subject: [PATCH V6 3/9] cfg80211: expose nl80211_chan_width_to_mhz for wide sharing

The newly added WBRF feature needs this interface for channel
width calculation.

Signed-off-by: Evan Quan <evan.quan@....com>
---
 include/net/cfg80211.h | 8 ++++++++
 net/wireless/chan.c    | 3 ++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 9e04f69712b1..c6dc337eafce 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -920,6 +920,14 @@ const struct cfg80211_chan_def *
 cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1,
 			    const struct cfg80211_chan_def *chandef2);
 
+/**
+ * nl80211_chan_width_to_mhz - get the channel width in Mhz
+ * @chan_width: the channel width from &enum nl80211_chan_width
+ * Return: channel width in Mhz if the chan_width from &enum nl80211_chan_width
+ * is valid. -1 otherwise.
+ */
+int nl80211_chan_width_to_mhz(enum nl80211_chan_width chan_width);
+
 /**
  * cfg80211_chandef_valid - check if a channel definition is valid
  * @chandef: the channel definition to check
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index 0b7e81db383d..227db04eac42 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -141,7 +141,7 @@ static bool cfg80211_edmg_chandef_valid(const struct cfg80211_chan_def *chandef)
 	return true;
 }
 
-static int nl80211_chan_width_to_mhz(enum nl80211_chan_width chan_width)
+int nl80211_chan_width_to_mhz(enum nl80211_chan_width chan_width)
 {
 	int mhz;
 
@@ -190,6 +190,7 @@ static int nl80211_chan_width_to_mhz(enum nl80211_chan_width chan_width)
 	}
 	return mhz;
 }
+EXPORT_SYMBOL(nl80211_chan_width_to_mhz);
 
 static int cfg80211_chandef_get_width(const struct cfg80211_chan_def *c)
 {
-- 
2.34.1