Re: LinuxKPI (iwlwifi, rtw8x) Please test! Important! (in stable/15 in three days)

On Fri, 6 Mar 2026, Oleg Nauman wrote:

> On Thu, Mar 5, 2026 at 3:59 PM Bjoern A. Zeeb <bz@freebsd.org> wrote:
>>
>> In the last 48 hours I pushed the next round of LinuxKPI 802.11
>> changes which would be good to validate on a wide set of chipsets
>> and supported drivers.  One of them fixed a firmware crash, another
>> one re-enabled some code again which was silently not doing its things
>> due to Linux KPI changes (and surprisingly most of it worked anyway the
>> last months).
>
> Unfortunately I am observing regression so my
>
> rtw880@pci0:2:0:0:      class=0x028000 rev=0x00 hdr=0x00 vendor=0x10ec
> device=0xc821 subvendor=0x1a3b subdevice=0x3040
>    vendor     = 'Realtek Semiconductor Co., Ltd.'
>    device     = 'RTL8821CE 802.11ac PCIe Wireless Network Adapter'
>    class      = network
>
> can't connect to 2.4 Ghz access point again
>
> rtw880: lkpi_sta_scan_to_auth:2575: lvif 0xfffffe01146ba000 vap 0xfffffe01146ba010 iv_bss 0xfffffe011463e000 lvif_bss 0 lvif_bss->ni 0 synched 0, ni 0xfffffe0115ba2000 lsta 0xfffff80042084000
> rtw880: lkpi_sta_a_to_a:3418: lvif 0xfffffe01146ba000 vap 0xfffffe01146ba010 iv_bss 0xfffffe011463e000 lvif_bss 0xfffff80042084000 lvif_bss->ni 0xfffffe0115ba2000 synched 0
> rtw880: lkpi_iv_newstate: error 95 during state transition 2 (AUTH) -> 2 (AUTH)
> rtw880: lkpi_sta_auth_to_assoc:2660: lvif 0xfffffe01146ba000 vap 0xfffffe01146ba010 iv_bss 0xfffffe011463e000 lvif_bss 0xfffff80042084000 lvif_bss->ni 0xfffffe0115ba2000 synched 0
> rtw880: lkpi_iv_newstate: error 95 during state transition 2 (AUTH) -> 3 (ASSOC)

AUTH->AUTH or scan_to_auth we have seen and are seeing with iwlwifi as well
but something kicking it during auth_to_assoc I cannot remember.

# ifconfig wlan882
wlan882: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
         options=0
         ether 5c:ea:1d:32:a2:0f
         inet6 fe80::5eea:1dff:fe32:a20f%wlan882 prefixlen 64 scopeid 0x5
         groups: wlan
         ssid ... channel 6 (2437 MHz 11g) bssid ...
         regdomain ETSI country DE authmode WPA2/802.11i privacy ON
         deftxkey UNDEF AES-CCM 3:128-bit AES-CCM ucast:128-bit txpower 30
         bmiss 7 scanvalid 60 protmode CTS wme roaming MANUAL
         parent interface: rtw882
         media: IEEE 802.11 Wireless Ethernet OFDM/54Mbps mode 11g
         status: associated
         nd6 options=823<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL,STABLEADDR>
# pciconf -lv pci0:10:0:0
rtw882@pci0:10:0:0:     class=0x028000 rev=0x00 hdr=0x00 vendor=0x10ec device=0xc821 subvendor=0x103c subdevice=0x831a
     vendor     = 'Realtek Semiconductor Co., Ltd.'
     device     = 'RTL8821CE 802.11ac PCIe Wireless Network Adapter'
     class      = network

It just comes up here.

It's not an open access point for you I assume?

I think we need to debug your setup separately and gather data of what is going on...


-- 
Bjoern A. Zeeb                                                     r15:7