Parsing new variables from wireless config

For Developers
1

Struggling to understand how to pass a new arbitrary variable from /etc/config/wireless to the downstream setup processes.
If i add a new variable foo=bar under a wifi-device stanza such as:

config wifi-device 'radio0'
	option type 'mac80211'
	option channel '36'
	option hwmode '11a'
	...
	option foo 'bar'

I cannot figure out how to access this variable at somewhere downstream like mac80211_hostapd_setup_base.
It appears that this variable never gets loaded into config. Config is part of the json data coming into init_wireless_driver "$@" as far as i can work out, but it never contains my new variable.

I've read the interaction between ldir and jow here: https://openwrt.org/docs/techref/netifd
but my efforts to register additional variables have failed. I'm missing some understanding here. I can see that some variables get registered here, but what about the channel variable? It seems to just be innately declared.

Someone please steer me in the right direction lol.

2

Did you restart netifd after your changes and did you add config_add_{int,string,boolean} statements for the variables you want to add?

3

If wifi is not enough, then no.
What’s the fastest way to restart netifd safely in such a case?

4

/etc/init.d/network restart

5

Thanks, that was the trick.

6

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