Re: [PATCH v2 3/4] cfg80211: reg: remove support for built-in regdb

[Benjamin Beichler <Benjamin.Beichler@uni-rostock.de>]

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Hi Johannes,

Am 09.10.2017 um 11:50 schrieb Johannes Berg:
> From: Johannes Berg <johannes.berg@intel.com>
>
> Parsing and building C structures from a regdb is no longer needed
> since the "firmware" file (regulatory.db) can be linked into the
> kernel image to achieve the same effect.
>
> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
> ---
>  Documentation/networking/regulatory.txt |  22 +----
>  net/wireless/Kconfig                    |  24 +----
>  net/wireless/Makefile                   |   6 --
>  net/wireless/db.txt                     |  17 ----
>  net/wireless/genregdb.awk               | 158 --------------------------------
>  net/wireless/reg.c                      |  39 --------
>  net/wireless/regdb.h                    |  23 -----
>  7 files changed, 3 insertions(+), 286 deletions(-)
>  delete mode 100644 net/wireless/db.txt
>  delete mode 100644 net/wireless/genregdb.awk
>  delete mode 100644 net/wireless/regdb.h
>
> diff --git a/Documentation/networking/regulatory.txt b/Documentation/networking/regulatory.txt
> index 46c8d8b1cc66..381e5b23d61d 100644
> --- a/Documentation/networking/regulatory.txt
> +++ b/Documentation/networking/regulatory.txt
> @@ -200,23 +200,5 @@ Then in some part of your code after your wiphy has been registered:
>  Statically compiled regulatory database
>  ---------------------------------------
>  
> -In most situations the userland solution using CRDA as described
> -above is the preferred solution.  However in some cases a set of
> -rules built into the kernel itself may be desirable.  To account
> -for this situation, a configuration option has been provided
> -(i.e. CONFIG_CFG80211_INTERNAL_REGDB).  With this option enabled,
> -the wireless database information contained in net/wireless/db.txt is
> -used to generate a data structure encoded in net/wireless/regdb.c.
> -That option also enables code in net/wireless/reg.c which queries
> -the data in regdb.c as an alternative to using CRDA.
> -
> -The file net/wireless/db.txt should be kept up-to-date with the db.txt
> -file available in the git repository here:
> -
> -    git://git.kernel.org/pub/scm/linux/kernel/git/sforshee/wireless-regdb.git
> -
> -Again, most users in most situations should be using the CRDA package
> -provided with their distribution, and in most other situations users
> -should be building and using CRDA on their own rather than using
> -this option.  If you are not absolutely sure that you should be using
> -CONFIG_CFG80211_INTERNAL_REGDB then _DO_NOT_USE_IT_.
> +When a database should be fixed into the kernel, it can be provided as a
> +firmware file at build time that is then linked into the kernel.
>

Is there already an example regulatory.db file available? And is there
already a tool chain for creating the new format? I don't see any
corresponding commit on
https://git.kernel.org/pub/scm/linux/kernel/git/sforshee/wireless-regdb.git/
for your change. Or can I simply use the regulartory.bin as firmware file?


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