From: Tom Fitzhenry <tom@tom-fitzhenry.me.uk>
To: Katherine Cox-Buday <cox.katherine.e@gmail.com>,
Guillaume Le Vaillant <glv@posteo.net>
Cc: 49611@debbugs.gnu.org, Brice Waegeneire <brice@waegenei.re>
Subject: bug#49611: Despite wireless-regdb being installed in my operating-system, dmesg indicates it can't find `regulatory.db`
Date: Tue, 10 Aug 2021 09:45:46 +1000 [thread overview]
Message-ID: <c56cc55d-e044-62b5-ce25-9defe131c6d3@tom-fitzhenry.me.uk> (raw)
In-Reply-To: <CA+TvSRhLi-Cvffueu8Kh6Ny+MLMVwC0ZZr97sn08jKWt5dcbnw@mail.gmail.com>
On 20/07/2021 04:21, Katherine Cox-Buday wrote:
> This is not part of the bug per-say, but a question around this space:
> despite all of this, I still cannot broadcast on US approved channels.
> I think this is because the EEPROM on the card is set as global. What
> am I missing? Do you know how Linux intend for people to notify the
> stack that this is an OK thing to do? I know projects like OpenWRT
> carry patches to the driver, but I keep thinking surely this is not
> the only way.
https://github.com/pcengines/apu2-documentation/issues/189 tracks this
issue for PC Engines, which retails wireless cards whose EEPROM uses a
global region.
Disclaimer: I don't understand this well.
My understanding is that Linux does not offer a way for end users to
override the EEPROM, per "It should be reasonably impossible for a user
to fail to comply with local regulations either unwittingly or by
accident."[0]
I can see two supported ways to set the regulatory domain:
* a card vendor/retailer performs certification, and flashes the EEPROM
accordingly.
* a system integrator (e.g. off-the-shelf wireless routers, mobile
phones, etc.) performs certification and sets
CONFIG_CFG80211_CERTIFICATION_ONUS.
Linux does offer a way to indicate your current region via CRDA[1], but
this is for the "travelling in another country" usecase, and acts to
restrict the driver to intersection(EEPROM, country).
0. https://wireless.wiki.kernel.org/en/developers/regulatory/statement
1. https://wireless.wiki.kernel.org/en/developers/regulatory
prev parent reply other threads:[~2021-08-10 20:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-17 21:43 bug#49611: Despite wireless-regdb being installed in my operating-system, dmesg indicates it can't find `regulatory.db` Katherine Cox-Buday
[not found] ` <handler.49611.B.16265582421408.ack@debbugs.gnu.org>
2021-07-17 21:49 ` bug#49611: Acknowledgement (Despite wireless-regdb being installed in my operating-system, dmesg indicates it can't find `regulatory.db`) Katherine Cox-Buday
2021-07-18 17:47 ` bug#49611: Despite wireless-regdb being installed in my operating-system, dmesg indicates it can't find `regulatory.db` Brice Waegeneire
2021-07-18 19:17 ` Guillaume Le Vaillant
2021-07-19 18:21 ` Katherine Cox-Buday
2021-07-19 21:17 ` Guillaume Le Vaillant
2021-08-09 23:40 ` Tom Fitzhenry
2021-08-09 23:45 ` Tom Fitzhenry [this message]
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