OpenWrt Support for Asus RT-AC88U

slh · October 3, 2022, 3:53am

Check the valid interface combination in iw list, afaik brcmfmac does not support AP/STA.

arinc9 · October 3, 2022, 8:42am

I think this is because brcmfmac detects a different chip and tries to load the firmware file which doesn't exist because it's not included on the image.

I don't know a proper way to differentiate between hardware revisions. What we can do instead is include firmware for 4366b along with 4366c. This way, both chips will be supported and brcmfmac will use the firmware file for the wireless chip it detects.

I shall get to sending a patch for master and 22.03 branch if everyone agrees.

mrkylegp · October 5, 2022, 10:24am

Sure, has this been patched somewhere? I'd like to try it again.

arinc9 · October 5, 2022, 10:51am

No? I haven't sent a patch if that's what you're asking.

mrkylegp · October 5, 2022, 11:32am

It was. In that case, yes, I agree? lol

arinc9 · October 12, 2022, 11:23am

Can you test this image?

https://files.arinc9.com/OpenWrt/

SopaDeMacaco-UmaDeli · October 14, 2022, 4:26am

Hey, I have a question about this device. Is it capable of 2gbps wan/lan nat routing?

arinc9 · October 14, 2022, 5:28am

Hardware-wise? Yes, there are two CPU ports of the switch, connected to the CPU. Software-wise? No, DSA doesn't support multiple CPU ports and we don't have a special case like on the MT7530 switch.

SopaDeMacaco-UmaDeli · October 14, 2022, 5:59am

So 2gbps wan/lan nat is not a rule for devices but a merely a statistic error? I thought there should be more devices capable of it.

I saw this router kinda cheap at a price of my Mi Router 3 Pro, but since I can't route so much traffic I'm kinda dissapointed.

fpenuin · October 14, 2022, 6:04am

Thanks for the new snapshoot!
I have try this on my HW A2 device, and got the radio back.
The radio setting works, but, still can't get my phone and laptop connected.

arinc9 · October 14, 2022, 6:31am

Did you enable bridge vlan filtering on the bridge interface? That must be disabled on the bridge that wi-fi interfaces are in.

arinc9 · October 14, 2022, 6:33am

How do you mean?

Rasou · October 14, 2022, 9:09am

Hello,

I've owned an Asus RT-AC88U (revision A6) for a long time and for a few days I've been trying to configure OpenWRT on it.

I spent several evenings reading the documentation and following tutorials between version 19, 21 and 22

But between the different versions of OpenWRT, this router and its Broadcom hardware and my level of beginner with OpenWRT, the bugs I encountered with VLANs and wifi, I don't know if today what I want to do is possible with this hardware.

Here is what I would like to do in a first time.

My current OpenWRT configuration is the factory configuration + execution of the following commands which all come from :
https://openwrt.org/docs/guide-user/network/wifi/guestwifi/guest-wlan
https://openwrt.org/docs/guide-user/network/wifi/guestwifi/extras

# Configure network
uci -q delete network.guest_dev
uci set network.guest_dev="device"
uci set network.guest_dev.type="bridge"
uci set network.guest_dev.name="br-guest"
uci -q delete network.guest
uci set network.guest="interface"
uci set network.guest.proto="static"
uci set network.guest.device="br-guest"
uci set network.guest.ipaddr="192.168.3.1"
uci set network.guest.netmask="255.255.255.0"
uci commit network
/etc/init.d/network restart

# Configure wireless
WIFI_DEV="$(uci get wireless.@wifi-iface[0].device)"
uci -q delete wireless.guest
uci set wireless.guest="wifi-iface"
uci set wireless.guest.device="${WIFI_DEV}"
uci set wireless.guest.mode="ap"
uci set wireless.guest.network="guest"
uci set wireless.guest.ssid="guest"
uci set wireless.guest.encryption="none"
uci commit wireless
wifi reload

# Configure DHCP
uci -q delete dhcp.guest
uci set dhcp.guest="dhcp"
uci set dhcp.guest.interface="guest"
uci set dhcp.guest.start="100"
uci set dhcp.guest.limit="150"
uci set dhcp.guest.leasetime="1h"
uci set dhcp.guest.netmask="255.255.255.0"
uci commit dhcp
/etc/init.d/dnsmasq restart

# Configure firewall
uci -q delete firewall.guest
uci set firewall.guest="zone"
uci set firewall.guest.name="guest"
uci set firewall.guest.network="guest"
uci set firewall.guest.input="REJECT"
uci set firewall.guest.output="ACCEPT"
uci set firewall.guest.forward="REJECT"
uci -q delete firewall.guest_wan
uci set firewall.guest_wan="forwarding"
uci set firewall.guest_wan.src="guest"
uci set firewall.guest_wan.dest="wan"
uci -q delete firewall.guest_dns
uci set firewall.guest_dns="rule"
uci set firewall.guest_dns.name="Allow-DNS-Guest"
uci set firewall.guest_dns.src="guest"
uci set firewall.guest_dns.dest_port="53"
uci set firewall.guest_dns.proto="tcp udp"
uci set firewall.guest_dns.target="ACCEPT"
uci -q delete firewall.guest_dhcp
uci set firewall.guest_dhcp="rule"
uci set firewall.guest_dhcp.name="Allow-DHCP-Guest"
uci set firewall.guest_dhcp.src="guest"
uci set firewall.guest_dhcp.src_port="68"
uci set firewall.guest_dhcp.dest_port="67"
uci set firewall.guest_dhcp.proto="udp"
uci set firewall.guest_dhcp.family="ipv4"
uci set firewall.guest_dhcp.target="ACCEPT"
uci commit firewall
/etc/init.d/firewall restart

# Configure wireless
WIFI_PSK="GUEST_WIFI_PASSWORD"
uci set wireless.guest.encryption="psk2"
uci set wireless.guest.key="${WIFI_PSK}"
uci commit wireless
wifi reload

I can't get VLANs to work with Wifi and I feel like this is the same problem that other people are talking about earlier in the thread.

My project seems to be such a basic setup that I'm wondering:

does my layout make sense/is it possible?
Is the RC-AC88U rev A6 capable of doing this with OpenWRT?
If yes, with which version exactly? (I already did several tests with 22.03.0-rc5, 22.03.0-rc6, 22.03.1, snapshot, arinc9)
And most important: how?

I'm new to OpenWRT, it must be from me, but I'm starting to get lost after several evenings of testing tutorials and different configurations

Thanks in advance if someone can help me
And if it's better I make a dedicated topic, sorry, I would like to know already if there can be a hardware compatibility problem

arinc9 · October 14, 2022, 4:43pm

Check the workaround I explained on the related GitHub issue.

github.com/openwrt/openwrt

brcmfmac for bcm4366c0: Wi-Fi won't work on VLAN Filtering Enabled Bridge

opened 10:47AM - 08 Jul 22 UTC

arinc9

When connecting to the Wi-Fi network, phone claims incorrect password was given.… However, that's not the case. I can see the Wi-Fi interface properly added to the VLAN filtering enabled bridge: ``` # bridge vlan show dev wlan0-1 port vlan-id wlan0-1 1 PVID Egress Untagged ``` Config: ``` config wifi-iface 'wifinet1' option device 'radio0' option mode 'ap' option ssid 'OpenWrt' option encryption 'psk2' option key 'password' option network 'internet' ``` ``` config device option type 'bridge' option name 'br0' list ports 'extsw' list ports 'lan1' list ports 'lan2' list ports 'lan3' list ports 'lan4' list ports 'wan' config bridge-vlan option device 'br0' list ports 'wan:t' option vlan '1' config interface 'internet' option proto 'dhcp' option device 'br0.1' ``` Wi-Fi works on a bridge where VLAN filtering is not enabled. As a workaround, I put the locally created VLAN interface (e.g. br0.1) on a new bridge where VLAN filtering is not enabled. Then I use that new bridge as the interface for LAN. Wi-Fi interface will be automatically added to the VLAN filtering disabled bridge interface of LAN. Me and @scatman75 experience this issue on Asus RT-AC88U. Tested on 22.03.0-rc5 and SNAPSHOT (r20023-21825af2da).

Yeah it makes perfect sense and it's possible to achieve.

Revisions don't matter, it's capable.

Any version should work.

Maybe we can go over it together on LuCI.

madmic · October 15, 2022, 1:51pm

I'd be interested in this - I'd like to put VLANs on the WiFi networks to have a guest, IoT, etc. all separate.

Thanks

arinc9 · October 17, 2022, 8:57am

You didn't respond to my private message. I hope you figured it out on your own.

madmic · October 17, 2022, 4:24pm

Many thanks for the offer - very busy weekend. Will have a play tonight and drop you a note on how I get on.

arinc9 · October 18, 2022, 9:00am

I've just sent a patch to openwrt-devel regarding the wireless issue on some of the hardware revisions of the router.

https://patchwork.ozlabs.org/project/openwrt/patch/20221018085420.12425-1-arinc.unal@arinc9.com/

@Magazine8237 this should fix your issues with wireless.

arinc9 · October 21, 2022, 7:31am

The patch is accepted to master. New snapshot builds should have WiFi work on all hardware revisions of the router.

github.com/openwrt/openwrt

bcm53xx: enable Broadcom 4366b1 firmware for Asus RT-AC88U

committed 06:50AM - 21 Oct 22 UTC

arinc9

+1 -1

On some of the hardware revisions of Asus RT-AC88U, brcmfmac detects the 4366b1 …wireless chip and tries to load the firmware file which doesn't exist because it's not included in the image. Therefore, include firmware for 4366b1 along with 4366c0. This way, all hardware revisions of the router will be supported by having brcmfmac use the firmware file for the wireless chip it detects. Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>

This is also on the 22.02 branch. The 22.03.3 release will include it.

lilli · October 28, 2022, 12:17pm

Yes, I tried installing the brcmfmac-firmware-4366b1-pcie, and the Wi-Fi works!

Here is the details of my device:

BTW, the HW version of my AC88U is A2

Model	Asus RT-AC88U
Architecture	ARMv7 Processor rev 0 (v7l)
Target Platform	bcm53xx/generic
Firmware Version	OpenWrt 22.03.1 r19777-2853b6d652 / LuCI openwrt-22.03 branch git-22.245.77528-487e58a
Kernel Version	5.10.146

after the Wi-Fi works, I installed the full version of wpad and successfully connected to 802.1X network (WPA2-EAP, PEAP, EAP-MSCHAPv2) for both 2.4GHz and 5GHz wlan interface.

Thank you very much!