Monitor mode not working for iwi(4) on 7.X

Adrian Chadd adrian at freebsd.org
Thu Oct 7 12:05:01 UTC 2010


finding where the regression happened - eg, which revision along the
6.x/head branch at the time caused the issue, would likely help
Bernard very much..


Adrian

2010/10/7 Alexey Dokuchaev <danfe at freebsd.org>:
> On Wed, Oct 06, 2010 at 11:56:25AM -0500, Brandon Gooch wrote:
>> 2010/10/6 Alexey Dokuchaev <danfe at freebsd.org>:
>> > On Fri, Dec 14, 2007 at 11:19:25PM +0100, Jan Henrik Sylvester wrote:
>> >> In contrast to 6.2-RELEASE, monitor mode does not work. Kismet does
>> >> not receive anything, while it does with ath or ural (even at the same
>> >> time). dmesg with debug.iwi=2 is below -- anything unusual?
>> >>
>> >> Moreover, "ifconfig iwi0 scan" sometimes just hangs, which never
>> >> happened on 6.2-RELEASE.
>> >
>> > Just found this email sent to stable@ almost three years ago; sadly I
>> > have to confirm iwi(4) still exhibits these problems on fairly recent
>> > 7-STABLE (early Juneish).  Maybe I have better luck on net@ (I am
>> > particularly interested in working monitor mode).  Thanks.  Any debug
>> > information will be gladly provided.  Pointers where to look (revisions
>> > to try, patches, etc.) are greatly appreciated.
>>
>> I know this response isn't too helpful, but the whole Intel
>> PRO/Wireless 2200BG/2225BG/2915ABG open-source driver situation is not
>> too good.
>
> I could understand that, but it looks like FreeBSD has a *regression*
> between 6.2 and 7.x, which is different from just "overall not too good
> situation".  Regressions are presumably should not happen and should be
> easier to fix than improving entire support stack in FOSS industry.  :-)
>
>> Same goes for the Intel 3945ABG (wpi(4)); it's very easy in both Linux
>> and *BSDs to befuddle the Intel Wifi chips.
>>
>> Having said that, Bernhard Schmidt has made outstanding progress with
>> the iwn(4) driver, supporting Intel Wireless WiFi Link
>> 4965/1000/5000/5150/5300/6000/6050 series.
>>
>> Is it possible in your situation to try another wireless card? I know
>> some notebook computers only whitelist a small set of PCI devices...
>
> I think there are no technical obstacles w/my laptop, and I'd gladly try
> something else, preferably fully working under FreeBSD (inc. monitor
> mode and packet injection).  Any particular recommendations (aside from
> iwn(4) supported chips mentioned above)?  Thanks.
>
> ./danfe
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