On Wed, 16 Feb 2022, John Schneider wrote:
Hi,
Today I upgraded from releng/13.0 to stable/13 but found my iwn device
could no longer scan for access points. I rolled back to releng/13.0 and
everything was fine again. No config changes were made during the upgrade
or rollback process.
/var/log/messages contained messages such as the one below with each scan
attempt:
Feb 16 16:12:33 mobile1 wpa_supplicant[385]: wlan0: CTRL-EVENT-SCAN-FAILED
ret=-1 retry=1
-1 is nothing the kernel should return so I don't know what the actual
error is.
I didn't see any other errors except ACPI stuff which looked normal to me
for this machine. For reference, here is the pciconf output for my device:
iwn0@pci0:2:0:0: class=0x028000 rev=0x35 hdr=0x00 vendor=0x8086
device=0x
422b subvendor=0x8086 subdevice=0x1121
vendor = 'Intel Corporation'
device = 'Centrino Ultimate-N 6300'
class = network
Is it possible that work being done for iwlwifi could affect scanning with
iwn and other drivers?
It shouldn't as there were very little functional changes to net80211
itself so far relating to this.
I would more likely think of wpa_supplicant updates but even that we'd
probably have heard a lot more noise. You could run that with
wpa_supplicant_flags="-sdd"
in rc.conf (from the top of my head) and see.
Also did you update kernel and world or was that just a kernel update
(which would rule out the above wpa_supplicant update theory)?
I also only see 3 changes to iwn(4) in main and 2 of them in stable/13
since releng/13.0:
https://cgit.freebsd.org/src/commit/sys/dev/iwn?h=stable/13&id=d61f10a8780ef94f82e384248ce40d24fc27ad2b
https://cgit.freebsd.org/src/commit/sys/dev/iwn?h=stable/13&id=67b7e2de4fc5dc1165feee8ca281c44444425d0f
and the one Adrian did not MFC:
https://cgit.freebsd.org/src/commit/sys/dev/iwn?id=b6fd00791f2b9690b0a5d8670fc03f74eda96da2&h=stable%2F13
In case you are willing to go back to stable/13 and re-test things
let me know so we can crank some debugging/logging up to see where the
error comes from.
On a separate subject, I had tested iwlwifi on a
separate machine with stable/13 and an AX201 and it was quite stable
(though slow as has been reported by others). Keep up the great work!
Thanks for testing. I'll try to make it more stable and then faster :)
Best Regards,
Bjoern
--
Bjoern A. Zeeb r15:7
