linux-kernel - Re: [PATCH V8 3/9] cfg80211: expose nl80211_chan_width_to

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Message-ID: <ec8d88db-4af7-3567-ac6a-92f50f0da8bb@quicinc.com>
Date:   Thu, 10 Aug 2023 07:05:54 -0700
From:   Jeff Johnson <quic_jjohnson@...cinc.com>
To:     Evan Quan <evan.quan@....com>, <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>
Subject: Re: [PATCH V8 3/9] cfg80211: expose nl80211_chan_width_to_mhz for
 wide sharing

On 8/10/2023 12:37 AM, Evan Quan wrote:
> 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 7c7d03aa9d06..f50508e295db 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.

SI nit: s/Mhz/MHz/ in both places

> + */
> +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)
>   {