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Groups > linux.kernel > #1528804

Re: wl1251 & mac address & calibration data

From Pavel Machek <pavel@ucw.cz>
Newsgroups linux.kernel
Subject Re: wl1251 & mac address & calibration data
Date 2016-11-23 23:30 +0100
Message-ID <sGOdb-2lV-13@gated-at.bofh.it> (permalink)
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Hi!

> > > As wl1251.ko does not accept mac_address as module parameter, such
> > > modprobe hook does not help -- as there is absolutely no way from
> > > userspace to set or change (permanent) mac address.
> > 
> > Quoting modprobe.d manual:
> > >       install modulename command...
> > >       
> > >           This command instructs modprobe to run your
> > >           command instead of inserting the module in the
> > >           kernel as normal. The command can be any shell
> > >           command: this allows you to do any kind of
> > >           complex processing you might wish. [...]
> 
> I know. But this do not allow me to send mac address to kernel -- as 
> kernel does not support such command yet (reason for my first
> question).

Plus, this does not really work for cases where wl1251 is not a
module.

> > You can hook up a script that cooks up wl1251-nvs.bin (caldata,
> > macaddr) and then insmod the actual wl1251.ko module. Or you can just
> > cook up the nvs on first device boot and store it in /lib/firmware
> > (possibly overwriting the "generic" wl1251 from linux-firmware).
> 
> This is what I would like to prevent -- overwriting (possible readonly) 
> system files with some device specific. It is really bad idea!

Agreed.

"ifconfig hw ether XX" normally sets the address. I guess that's
ioctl? And I guess we should use similar mechanism for permanent
address.

Best regards,

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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Thread

Re: wl1251 & mac address & calibration data Pali Rohár <pali.rohar@gmail.com> - 2016-11-21 17:00 +0100
  Re: wl1251 & mac address & calibration data Michal Kazior <michal.kazior@tieto.com> - 2016-11-22 16:30 +0100
    Re: wl1251 & mac address & calibration data Pali Rohár <pali.rohar@gmail.com> - 2016-11-22 16:40 +0100
      Re: wl1251 & mac address & calibration data Michal Kazior <michal.kazior@tieto.com> - 2016-11-22 17:30 +0100
        Re: wl1251 & mac address & calibration data Pali Rohár <pali.rohar@gmail.com> - 2016-11-22 19:10 +0100
          Re: wl1251 & mac address & calibration data Arend Van Spriel <arend.vanspriel@broadcom.com> - 2016-11-23 09:30 +0100
          Re: wl1251 & mac address & calibration data Pavel Machek <pavel@ucw.cz> - 2016-11-23 23:30 +0100
            Re: wl1251 & mac address & calibration data Pali Rohár <pali.rohar@gmail.com> - 2016-11-23 23:50 +0100
              Re: wl1251 & mac address & calibration data Pavel Machek <pavel@ucw.cz> - 2016-11-24 09:00 +0100
                Re: wl1251 & mac address & calibration data Pali Rohár <pali.rohar@gmail.com> - 2016-11-24 09:40 +0100
                Re: wl1251 & mac address & calibration data Pali Rohár <pali.rohar@gmail.com> - 2016-11-24 16:30 +0100
                Re: wl1251 & mac address & calibration data Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> - 2016-11-24 16:40 +0100
                Re: wl1251 & mac address & calibration data Sebastian Reichel <sre@kernel.org> - 2016-11-24 17:10 +0100
                Re: wl1251 & mac address & calibration data Pali Rohár <pali.rohar@gmail.com> - 2016-11-24 17:50 +0100
                Re: wl1251 & mac address & calibration data Sebastian Reichel <sre@kernel.org> - 2016-11-24 19:20 +0100
                Re: wl1251 & mac address & calibration data Pali Rohár <pali.rohar@gmail.com> - 2016-11-24 19:40 +0100
                Re: wl1251 & mac address & calibration data Aaro Koskinen <aaro.koskinen@iki.fi> - 2016-11-24 20:10 +0100
                Re: wl1251 & mac address & calibration data Sebastian Reichel <sre@kernel.org> - 2016-11-24 16:30 +0100

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