Re: iwlagn is getting even worse with 3.3-rc1

From: Norbert Preining
Date: Tue Mar 13 2012 - 19:39:41 EST


Hi Emmanuel,

(now at -rc6)

On Mo, 27 Feb 2012, Emmanuel Grumbach wrote:
> > Now I did:
> > kernel 3.3-rc5
> >
> > On Mi, 22 Feb 2012, Emmanuel Grumbach wrote:
> >> From the log, I can see that we have a lot of "passive channel
> >> failures". Can you try to disable 11n (module_parameter) ?
> >> Please also try with debug=0xc0000000
>
> So this doesn't seem to be related to my rework of the AMPDU logic....
> Will keep you updated if I think about something.

Another thing ... I don't know what the hack is going on here, since
-rc6 I think I get *loads* of messages:
delba from 00:0a:79:eb:56:10 (initiator) tid 0 reason code 39
After last reboot in about 10min (920.95) I got 414 of these lines.
Always in a triple:
[ 914.882870] delba from 00:0a:79:eb:56:10 (initiator) tid 0 reason code 39
[ 914.882881] Rx BA session stop requested for 00:0a:79:eb:56:10 tid 0 inititator reason: 0
[ 915.012136] Rx A-MPDU request on tid 0 result 0
[ 916.157983] delba from 00:0a:79:eb:56:10 (initiator) tid 0 reason code 39
...

No idea if that helps in any way, but it is new.

Interestingly, after doing rfkill block wifi; sleep 10; rfkill unblock wifi,
and that sometimes 2 or three times, at some point these messages disappear
and I have only:
[18876.624068] tx session timer expired on tid 0
[18876.624117] Tx BA session stop requested for 00:0a:79:eb:56:10 tid 0
[18876.644224] Stopping Tx BA session for 00:0a:79:eb:56:10 tid 0
[18877.609764] Open BA session requested for 00:0a:79:eb:56:10 tid 0
[18877.640279] activated addBA response timer on tid 0
[18877.642218] switched off addBA timer for tid 0
[18877.642224] Aggregation is on for tid 0
(again many of them)

Best wishes

Norbert
------------------------------------------------------------------------
Norbert Preining preining@{jaist.ac.jp, logic.at, debian.org}
JAIST, Japan TeX Live & Debian Developer
DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094
------------------------------------------------------------------------
MELCOMBE REGIS (n.)
The name of the style of decoration used in cocktail lounges in mock
Tudor hotels in Surrey.
--- Douglas Adams, The Meaning of Liff
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/