Date: Sun, 18 Jan 2009 23:10:22 +0100 From: Jan Henrik Sylvester <me@janh.de> To: stable-list freebsd <freebsd-stable@freebsd.org> Cc: Brandon Gooch <jamesbrandongooch@gmail.com>, Da Rock <rock_on_the_web@comcen.com.au>, questions-list freebsd <freebsd-questions@freebsd.org> Subject: Re: iwn driver on 7.1 Message-ID: <4973A8CE.9060909@janh.de> References: 179b97fb0901181217v475a4a6aw127634c4c472266@mail.gmail.com
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Da Rock wrote: > On Sun, 2009-01-18 at 14:17 -0600, Brandon Gooch wrote: >> I have a working driver for the Intel 4965, aka iwn(4), loaded on my >> Lenovo X300 running FreeBSD 7.1-RELEASE (amd64). >> >> This driver is a slightly-modified version of the iwn(4) driver >> backported from 8.0-CURRENT by Gavin Atkinson: >> >> http://docs.freebsd.org/cgi/getmsg.cgi?fetch=221758+0+/usr/local/www/db/text/2008/freebsd-stable/20080928.freebsd-stable >> >> I was seeing the same symptoms described in these threads (among others): >> >> http://lists.freebsd.org/pipermail/freebsd-stable/2008-September/045264.html >> >> http://www.freebsd.org/cgi/getmsg.cgi?fetch=1334322+1338147+/usr/local/www/db/text/2009/freebsd-questions/20090118.freebsd-questions >> >> http://www.freebsd.org/cgi/getmsg.cgi?fetch=1418632+1421765+/usr/local/www/db/text/2009/freebsd-questions/20090118.freebsd-questions >> >> ...so I debugged and modified Gavin's driver for my system. >> >> The driver and the source tree diff can be downloaded here for any >> brave souls wanting to test it out: >> >> http://sites.google.com/site/bsdgooch/files >> >> I'm using the driver now to send this e-mail over a link to my TP-LINK >> TL-WR941ND access point (with WPA2). Feedback and bug reports would be >> useful. >> >> -brandon > > Sounds like you got to it before I did- thank god! :) > > Question though: have you got it figured for a channels yet? > > I'll test it for you and keep you updated with my results. Thanks for working on the driver! The only difference to the version of gavin that I could see is that the bands in iwn_bands that got commented out were brought back. Or did I miss something? Do you know why they were commented out and it was unnecessary? Or was it just to fix the crash? I did a few test runs: It does not crash immediately as the version from gavin, but the error I had with the perforce version iwn0: error, INTR=82000000<SW_ERROR,RX_INTR> STATUS=0x10000 iwn0: iwn_config: could not set power mode, error 35 is there -- in 3 out of 3 tries. So nothing improved there. (I hit that error on first use in about 50% of the cases before.) Moreover, at 3 out of 4 tries to 'kldunload if_iwn' after hitting the error (after '/etc/rc.d/netif stop iwn0' and 'ifconfig iwn0 down'), there was a crash: 2 page faults and 1 freeze. I have not had that with the perforce version. (Maybe once long ago, but I think I forgot to stop iwn0 at that time.) The one time I actually got the (WPA2) connection up, I was able to transfer with a similar speed as with the perforce version. Thus, for me, there are no improvement over the (old) perforce version. Probably by chance, but I had more crashes. I think the thread on stable@ should rather be continued than the one on questions@, but since Da Rock answered on questions@, I reinclude both. Cheers, Jan Henrik
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