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FS#3961 - Atheros WDS stopped working on TP-Link Archer C60 v2 with OpenWRT 21.02.0 rc4 #8955

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openwrt-bot opened this issue Aug 2, 2021 · 20 comments
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@openwrt-bot openwrt-bot commented Aug 2, 2021

evoserver:

I tried rc4 of OpenWRT 21.02.0 on my Atheros C60 v2 and WDS stopped working.
[[https://openwrt.org/docs/guide-user/network/wifi/atheroswds|WDS]] is used for forwarding a wired client on the same subnet of the wifi network.
I found the wireless client associated to my Atheros C60 access point
Mon Aug 2 15:46:45 2021 daemon.info hostapd: wlan1-1: STA xxx IEEE 802.11: authenticated
Mon Aug 2 15:46:45 2021 daemon.info hostapd: wlan1-1: STA xxxx IEEE 802.11: associated (aid 1)

but I'm unable even to ping it.
Even if I set up a fixed IP address on both the wireless and the wired clients, they can't connect to the router.
Other clients are connected to the Atheros C60 access point without problems.
I never had a problem with previous version of OpenWRT, so I went back to rc3 and everything started working again.

The only extra package installed is relayd

/etc/config/network on Archer C60
config interface 'loopback'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
option device 'lo'

config globals 'globals'

config interface 'wan'
option proto 'dhcp'
option device 'eth1'

config interface 'wan6'
option proto 'dhcpv6'
option device 'eth1'

config interface 'lan'
option proto 'static'
option netmask '255.255.255.0'
option ipaddr '192.168.50.1'
option gateway '192.168.2.1'
list dns '192.168.2.5'
option device 'br-lan'

config switch
option name 'switch0'
option reset '1'
option enable_vlan '1'

config switch_vlan
option device 'switch0'
option vlan '1'
option ports '1 2 3 4 0t'

config interface 'wwan'
option proto 'static'
option netmask '255.255.255.0'
list dns '192.168.2.5'
option ipaddr '192.168.2.50'
option gateway '192.168.2.1'

config interface 'repeater_bridge'
option proto 'relay'
list network 'lan'
list network 'wwan'
option gateway '192.168.2.5'

config device
option name 'br-lan'
option type 'bridge'
list ports 'eth0.1'

/etc/config/wireless on Archer C60

config wifi-device 'radio0'
option type 'mac80211'
option hwmode '11a'
option path 'pci0000:00/0000:00:00.0'
option htmode 'VHT80'
option country 'IT'
option channel '60'
option cell_density '0'

config wifi-iface 'default_radio0'
option device 'radio0'
option network 'lan'
option mode 'ap'
option ssid 'xxx'
option encryption 'psk2+ccmp'
option key ''

config wifi-device 'radio1'
option type 'mac80211'
option hwmode '11g'
option htmode 'HT20'
option country 'IT'
option channel 'auto'
option path 'platform/ahb/18100000.wmac'

config wifi-iface 'default_radio1'
option device 'radio1'
option network 'lan'
option mode 'ap'
option wds '1'
option ssid 'xxx'
option encryption 'psk2+ccmp'
option key ''

config wifi-iface 'wifinet2'
option ssid 'xxx'
option device 'radio1'
option mode 'sta'
option key ''
option network 'wwan'
option encryption 'psk2'
option bssid 'xxx'

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@openwrt-bot openwrt-bot commented Aug 26, 2021

Greybeard:

I just tried this on my wr842v1 with snapshot and have a similar issue. WDS no longer appears to work. I don't use relayd.
Previous versions worked ok.

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@openwrt-bot openwrt-bot commented Aug 27, 2021

Greybeard:

Confirming that WDS is broken on client wr842nv1 snapshot r17419-364bd887a1
Can ping when client is simple station but fails when client is station with WDS enabled.
No obvious errors in logs.
Master is c7v5 running SNAPSHOT r17182-f7374bce00

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@openwrt-bot openwrt-bot commented Sep 6, 2021

evoserver:

The problem is still there, even with the stable version.
I'll stay with RC3

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@openwrt-bot openwrt-bot commented Sep 7, 2021

@openwrt-bot
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@openwrt-bot openwrt-bot commented Sep 9, 2021

Slenderchat:

Can confirm this bug from 21.02.0-rc4 and up to current stable 21.02.0. My two routers is TP-Link Archer C20 v4 and TP-Link TL-WR841N/ND v9. Downgraded TP-Link Archer C20 v4 to 21.02.0-rc3 and everything rock stable again. In some situations WDS breaking can be lead to severe consequences, as in my situation where i have little fleet of 10 different routers, and 5 WDS links.

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@openwrt-bot openwrt-bot commented Sep 9, 2021

shaarkys:

I did observe similar issues on TP-Link Archer MR200 having bridge with Ubiquiti UniFi AC Pro - going back to RC3 resolved all my WDS issues....

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@openwrt-bot openwrt-bot commented Sep 12, 2021

chadneufeld:

I've been trying to figure out which commits have caused this issue for me. I think I have it narrowed down to commit # fe498dd. I had to revert 3 netifd commits before this one (in total 4 netifd commits). 21.02 snapshot installed and running smoothly with the 4 commits removed.

[[https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=fe498dd3f108de494594ae8e0eba207fdbf14594]]

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@openwrt-bot openwrt-bot commented Sep 15, 2021

cowwoc:

Why is the priority of this task very low?

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@openwrt-bot openwrt-bot commented Sep 15, 2021

chadneufeld:

I did some more digging. I think the issue is related to this specific commit in NETIFD.

  • f037b082923abc2dad0d14c8401ebe0afd816b5c wireless: handle WDS per-sta devices

I undid just the changes in the above commit related to "wireless_device_hotplug_event", recompiled NETIFD and my WDS links seem to work perfectly fine now.

The end result is OpenWRT 21.02.0 with an up to date NETIFD minus the wireless_device_hotplug_event changes.

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@openwrt-bot openwrt-bot commented Sep 20, 2021

nbd:

Please try to apply this patch on top of the affected netifd version to see if it fixes the issue: https://termbin.com/awp7

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@openwrt-bot openwrt-bot commented Sep 20, 2021

chadneufeld:

Hi Felix. I applied the patch and updated the netifd package on two access points (one master and one client).

The WDS link seems to be working with the patch. I'll let you know how it works over the day.

Thanks

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@openwrt-bot openwrt-bot commented Sep 29, 2021

D.H.:

Could you try restarting the WDS AP a few times and check if it keeps working every time? I had the same problem, but the patch did not help.

It turns out that the problem was the follwing race condition:

http://lists.openwrt.org/pipermail/openwrt-devel/2021-September/036464.html

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@openwrt-bot openwrt-bot commented Oct 1, 2021

chadneufeld:

I haven't seen that issue yet. I'll do some testing next week and let you know how it goes.

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@openwrt-bot openwrt-bot commented Oct 5, 2021

D.H.:

With the latest snapshot, the bug is now also fixed for me, see:

http://lists.openwrt.org/pipermail/openwrt-devel/2021-October/036612.html

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@openwrt-bot openwrt-bot commented Oct 8, 2021

chadneufeld:

You are correct. The original patch helped, but it didn't completely solve the issue. My WDS link was down after being away for a week.

I have compiled and applied the new patch. I've restarted my WDS AP a few times with no issue. Will keep you updated.

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@openwrt-bot openwrt-bot commented Oct 11, 2021

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@openwrt-bot openwrt-bot commented Oct 16, 2021

chadneufeld:

Hi Daniel. I've been running the new NETIFD updates for about a week and the WDS link seems to be nice and stable.

Have you have any issues since the last update?

Do you know if we could port the NETIFD updates to 21.02?

Thanks

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@openwrt-bot openwrt-bot commented Oct 25, 2021

D.H.:

No issues, it works well for me.

Unfortunately, it seems it did not go into 21.02.1.

What can we do to get it into 21.02.2?

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@openwrt-bot openwrt-bot commented Nov 2, 2021

evoserver:

21.02.1 didn't solve the problem for me.
I hope for a 21.02.2 release.

Thank you all

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@openwrt-bot openwrt-bot commented Nov 25, 2021

chadneufeld:

It looks like the NETIFD updates have been pushed to the 21.02 branch as of Nov 21, 2021. Hopefully 21.02.2 will have working WDS links again for Atheros.

[[https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=be55e7d5dd4b9f26eee98b0e996b752ebe641df8]]

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