luci-mod-network: missing channel width setting in AX mode

[abajk]

Is there an existing issue for this?

• I have searched among all existing issues (including closed issues)

screenshots or captures

Actual behaviour

Just connected the Comfast CF-951AX WiFi adapter to the BT Home Hub 5A. It turned out that LUCI doesn't have an option to set the channel bandwidth.

Expected behaviour

This issue doesn't happen on the EX5601. That's how it looks then:

Steps to reproduce

1. Connect adapter to device
2. Go to Network->Interfaces and select MT7921AU adapter
3. Select AX mode

Additional Information

root@OpenWrt:~# ubus call system board
{
	"kernel": "6.12.57",
	"hostname": "OpenWrt",
	"system": "xRX200 rev 1.2",
	"model": "BT Home Hub 5A",
	"board_name": "bt,homehub-v5a",
	"rootfs_type": "squashfs",
	"release": {
		"distribution": "OpenWrt",
		"version": "SNAPSHOT",
		"firmware_url": "https://downloads.openwrt.org/",
		"revision": "r31783-7656e74a95",
		"target": "lantiq/xrx200",
		"description": "OpenWrt SNAPSHOT r31783-7656e74a95",
		"builddate": "1762878114"
	}
}

What browsers do you see the problem on?

Firefox

Relevant log output

root@OpenWrt:~# iwinfo phy1-ap0 htmodelist
HT20 VHT20 HE20 HT40 VHT40 HE40 VHT80 HE80
root@OpenWrt:~#  iw list
...
		HE Iftypes: AP
			HE MAC Capabilities (0x00011a081044):
				+HTC HE Supported
				BSR
				OM Control
				Maximum A-MPDU Length Exponent: 3
				BQR
				A-MSDU in A-MPDU
				OM Control UL MU Data Disable RX
			HE PHY Capabilities: (0x0420ce120000a000000c00):
				HE40/HE80/5GHz
				LDPC Coding in Payload
				NDP with 4x HE-LTF and 3.2us GI
				STBC Tx <= 80MHz
				STBC Rx <= 80MHz
				Full Bandwidth UL MU-MIMO
				Partial Bandwidth UL MU-MIMO
				DCM Max Constellation: 2
				DCM Max Constellation Rx: 2
				Partial Bandwidth Extended Range
				PPE Threshold Present
				TX 1024-QAM
				RX 1024-QAM
			HE RX MCS and NSS set <= 80 MHz
				1 streams: MCS 0-11
				2 streams: MCS 0-11
				3 streams: not supported
				4 streams: not supported
				5 streams: not supported
				6 streams: not supported
				7 streams: not supported
				8 streams: not supported
			HE TX MCS and NSS set <= 80 MHz
				1 streams: MCS 0-11
				2 streams: MCS 0-11
				3 streams: not supported
				4 streams: not supported
				5 streams: not supported
				6 streams: not supported
				7 streams: not supported
				8 streams: not supported
			PPE Threshold 0x79 0x1c 0xc7 0x71 0x1c 0xc7 0x71
...

[abajk]

I think it might be some kind of endian issue, but I don't know where to start.
Iw correctly decodes the supported channel widths. Where does LUCI get the supported channel widths from?

[systemcrash]

Not from iw directly. It typically goes through netifd I think. So absence in LuCI is only a symptom.

Run ubus list and have a poke around in the network and WiFi related entries.