Wireless config file design proposal for multi-radio wiphy

[Harshitha Prem]

Hi Team,

The MLO interface requires support for multi-radio wiphy and we would 
like to propose the following design for the wireless configuration file 
to accommodate multi-radio wiphy. For the multi-radio wireless 
configuration, we could use Wi-Fi devices named as radio0_band0, 
radio0_band1, etc. This naming convention would be helpful for hardware 
that includes a combination of one multi-radio capable wiphy 
(radio0_band0, radio0_band1) and one non-multi-radio wiphy (radio1).

Sample multi-radio wireless configuration file:

config wifi-device  radio0
         option type     mac80211
         option channel  11
         option hwmode   11g
         option htmode   HT20
         # REMOVE THIS LINE TO ENABLE WIFI:
         option disabled 1
config wifi-iface
         option device   radio0
         option network  lan
         option mode     ap
         option ssid     OpenWrt
         option encryption  none
config wifi-device  radio1_band0
         option type     mac80211
         option channel  36
         option hwmode   11a
         option htmode   VHT80
         # REMOVE THIS LINE TO ENABLE WIFI:
         option disabled 1
         option country US
config wifi-iface
         option device   radio1_band0
         option network  lan
         option mode     ap
         option ssid     OpenWrt
         option encryption  none
config wifi-device  radio1_band1
         option type     mac80211
         option channel  49
         option hwmode   11a
         option band     3
         option htmode   HE80
         # REMOVE THIS LINE TO ENABLE WIFI:
         option disabled 1
config wifi-iface
         option device   radio1_band1
         option network  lan
         option mode     ap
         option ssid     OpenWrt
         option encryption  sae
         option sae_pwe  1
         option key      0123456789

To configure a IEEE802.11be Multi-link Interface (MLD VAP), we could use 
options such as mld in each wifi-iface section which are part of MLD and 
introduce a new wireless configuration section, wifi-mld. This allows us 
to couple multiple links together under a single interface and any ML 
specific configurations could be updated under this section.

Please find the sample ML interface configuration below:

config wifi-iface 'default_radio0_band1'
         option device 'radio0_band1'
         option network 'lan'
         option mode 'ap'
         option ssid 'MLO_2_5'
         option encryption 'sae'
         option mld 'mld1'
         option key '0123456789'
         option sae_pwe '1'

config wifi-iface 'default_radio0_band2'
         option device 'radio0_band2'
         option network 'lan'
         option mode 'ap'
         option ssid 'MLO_2_5'
         option encryption 'sae'
         option sae_pwe '1'
         option key '0123456789'
         option mld 'mld1'

config wifi-mld 'mld1'
         option ssid 'MLO_2_5'
         option encryption 'sae'
         option sae_pwe '1'
         option key '0123456789'
         option ifname 'wlan0'

Could you please share your thoughts or comments on this proposal? 
Additionally, is there any other proposal currently being planned or 
developed within the OpenWRT community that we should be aware of?

Thanks,
Harshitha