Hello all,

I’m trying to build my own Attitude Adjustment image for a Netgear WNRD3700 v1 router mostly to be able to use wireless channels 12 & 13 on 2.4GHz that are legally allowed in my country but not enabled on the US-centric standard build.

Following this router's specific tutorial I have made -amongst others- the following changes to the default wireless selections in the relevant menuconfig sections:

• Kernel Modules > Wireless Drivers > kmod-ath > Configuration > Force Atheros driver respect usr regdomain settings = YES

• Network > CRDA = YES (compile as built-in package with "*")

Now my question: 
Will I be able to update the regulatory DB (I believe it lives in /usr/lib/crda/regulatory.bin) after enabling CRDA as built-in package or should I set it instead as module?

Regards,
D

CRDA is not used anymore, the regdb is directly built into mac80211. Take a look at package/mac80211/files/regdb.txt

Thanks for your answer. Please correct/modify if my reasoning below is wrong.

The regdb seems to be statically compiled and since #31954 mac80211 uses this instead of the standard regulatory infrastructure which is based on an external regulatory.bin. As I understand it for any regulatory changes, a recompilation is needed.

With CONFIG_ATH_USER_REGD=y  I can just do  "iw reg set XX" and the kernel will happily ignore the country code burned on the Atheros card EEPROM  ("0x0" --> "US") and will look up instead my XX code in the internal regdb mentioned earlier to get the corresponding frequency parameters to apply. Correct?

So what does the CONFIG_PACKAGE_crda=y do then?

Yes.

Occupy space.