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From:   Alex Deucher <alexdeucher@gmail.com>
Date:   Fri, 4 Mar 2022 16:01:06 -0500
Message-ID: <CADnq5_OUDMiyB3+H-Y-TkY16t_mHa+-uN5gv8rNyCT7XNwYZCw@mail.gmail.com>
Subject: Re: Way to enumerate wireless adapters in kernel
To:     Larry Finger <Larry.Finger@lwfinger.net>
Cc:     Linux Wireless List <linux-wireless@vger.kernel.org>
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On Fri, Mar 4, 2022 at 3:48 PM Larry Finger <Larry.Finger@lwfinger.net> wrote:
>
> On 3/4/22 13:59, Alex Deucher wrote:
> > Hi, is there a way to enumerate wireless adapters in the kernel and
> > determine what their channel and frequency is?  I'm looking for a way
> > to determine this from another component in the kernel so as to avoid
> > any potential frequency interface from another device in the kernel.
>
> The command 'iw dev' will list the device name and frequency if the device is
> connected. There is a bit of extraneous output, but it is not difficult to sort
> it outwith something like iw dev | egrep "Interface|channel"

What about within the kernel itself?  E.g., from another kernel driver?

Alex