Wireless config file design proposal for multi-radio wiphy

[Janusz Dziedzic]

czw., 26 wrz 2024 o 08:09 Felix Fietkau <nbd at nbd.name> napisał(a):
>
> Hi Harshitha,
>
> On 26.09.24 07:14, Harshitha Prem wrote:
> > 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:
>
> I have a different plan for supporting MLD already. In my staging tree,
> I've been working on user space code for using the multi-radio wiphy
> support that I added to cfg80211/mac80211.
> The idea is to still have multiple wifi-device sections (like on your
> proposal), but with an option radio <idx> matching the wiphy radio index.
> The code will use my work-in-progress code for setting allowed radios
> for each vif.
>
> The next step (which I have not implemented yet) is to turn the device
> option for a wifi-iface into a list, so that the same SSID can be
> brought up on multiple radios without duplicating the section.
> That should be supported for both MLD and non-MLD configurations, adding
> an extra option to enable MLD for the SSID.
>
> I want to retain the ability to bring individual wifi devices up and
> down via the wifi command and make the hostapd ucode script responsible
> for adding/removing MLD links accordingly.
>
> I can go into more detail once I've made more progress with the code.
> The next step for me is to rework the vif-allowed-radios code based on
> feedback from Johannes and to complete the single-wiphy support for
> legacy mode. After that I will move on to MLD.
>

Nice, will that support BPI-R4 (with wifi7 module mt7996e ) MLO also?

And you will do smth like this?
phy#0
       Interface wlan0
               ifindex 51
               wdev 0x23
               addr 02:03:7f:12:34:56
               ssid MLO-AP
               type AP
               link 0:
                 addr 02:03:7f:12:34:56
                 channel 11 (2462 MHz), width: 20 MHz, center1: 2462 MHz
                 txpower 20.00 dBm
               link 1:
                 addr 02:03:7f:12:35:57
                 channel 36 (5180 MHz), width: 80 MHz, center1: 5210 MHz
                 txpower 22.00 dBm
               link 2:
                 addr 00:03:7f:12:36:59
                 channel 37 (6135 MHz), width: 320 MHz, center1: 6105 MHz
                 txpower 21.00 dBm

Could I clone some MLO test code for BPI-R4?

BR
Janusz