Re: AX210 testing, problems connecting 11ac

On Wed, 23 Apr 2025, Peter Miller wrote:

Hi,

  Cc: Adrian for the mode vs. cahnnel


> doas wlandebug -i wlan0 +scan
> net.wlan.0.debug: 0x200000<scan>
>
> Is there something else to go along with that? Seems like I'm not getting
> info you need with that one.

It would log to console and may show up in a log file or dmesg.


> OK.. now for something *new*.
>
> To make this reply even more confusing. I noticed while testing that
> my 11ac connection quietly drops back to 11ng and/or even 11g when I'm
> right in the middle of documenting things!! At least according to
> ifconfig. When I run a speed test, I'm clearly not on 11g.
>
> I tested this a bit more, and when ifconfig initially says I'm on 11ng
> I get corresponding speeds. If I get connected with 11ac and ifconfig
> later shows it 11ng etc. I still get 11ac speeds. 300+ mbit.
>
> Below see reported 11g yet 300+ mbit speeds.
>
> ifconfig
> lo0: flags=1008049<UP,LOOPBACK,RUNNING,MULTICAST,LOWER_UP> metric 0 mtu 16384
> 	options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
> 	inet 127.0.0.1 netmask 0xff000000
> 	inet6 ::1 prefixlen 128
> 	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
> 	groups: lo
> 	nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
> wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> 	options=0
> 	ether a0:80:69:f4:02:4f
> 	inet 192.168.1.207 netmask 0xffffff00 broadcast 192.168.1.255
> 	inet6 fe80::a280:69ff:fef4:24f%wlan0 prefixlen 64 scopeid 0x2
> 	inet6 2600:1702:6251:ef0:a280:69ff:fef4:24f prefixlen 64 autoconf pltime 3600 vltime 3600
> 	groups: wlan
> 	ssid MaeAutoDetail channel 36 (5180 MHz 11a vht/80+) bssid 14:91:82:8b:5b:15

The channel is a 11a VHT/80


> 	regdomain FCC country US authmode WPA2/802.11i privacy ON
> 	deftxkey UNDEF AES-CCM 3:128-bit txpower 30 bmiss 7 mcastrate 6
> 	mgmtrate 6 scanvalid 60 -ampdutx ampdurx ampdulimit 64k
> 	-amsdutx amsdurx shortgi -ldpctx ldpcrx -uapsd vht vht40 vht80 vht160
> 	-vht80p80 wme roaming MANUAL
> 	parent interface: iwlwifi0
> 	media: IEEE 802.11 Wireless Ethernet autoselect mode 11g

but media is indeed 11g.  Never seen this before.

@adrian, this smells like a ieee80211_node_txrate gone wrong in
ieee80211_rate2media() or some place around this?

I further assume this has to do with IEEE80211_RATECTL_STATUS_FINAL_RATE
not being used anywhere as feedback and net80211 having no idea what
happens in the TX path otherwise on firmware based drivers?

I wouldn't mind seeing an 11a or 11an there if no 11ac but an 11a
channel and an 11g mode seems wrong.


> 	status: associated
> 	nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>

If in doubt check the
 	sysctl compat.linuxkpi.80211.wlan0
as well, which is closer to what firmware reports back to iwlwifi and
LinuxKPI for now.

/bz

-- 
Bjoern A. Zeeb                                                     r15:7