Date: Fri, 15 Jun 2007 09:23:50 -0700 From: Sam Leffler <sam@errno.com> To: Stefan Ehmann <shoesoft@gmx.net> Cc: freebsd-current@freebsd.org Subject: Re: LOR in iwi with new 802.11 work Message-ID: <4672BD16.70707@errno.com> In-Reply-To: <200706151044.32493.shoesoft@gmx.net> References: <200706141641.54668.shoesoft@gmx.net> <467169F6.7020206@errno.com> <200706151044.32493.shoesoft@gmx.net>
next in thread | previous in thread | raw e-mail | index | archive | help
Stefan Ehmann wrote: > On Thursday 14 June 2007 18:16:54 Sam Leffler wrote: >> Stefan Ehmann wrote: >>> After the system is up for about 5 minutes, I see this LOR. Haven't seen >>> it posted yet. >>> >>> Stefan >>> >>> lock order reversal: >>> 1st 0xc2e4700c ieee80211com (802.11 com lock) >>> @ /usr/src/sys/net80211/ieee80211_scan.c:523 >>> 2nd 0xc2e48400 iwi0 (network driver) >>> @ /usr/src/sys/modules/iwi/../../dev/iwi/if_iwi.c:1908 > ... >> Yes, known and can safely be ignored. > > Okay, thanks. > > Another problem I've noticed (don't want to start a new thread): > > Before the latest commit, I've never seen dropouts in the connnection. > > But now I've seen for the second time that the connection drops for some > seconds. ifconfig shows no IP address. At least it recovers, but open > connections die. > > In dmesg I see: > > Jun 15 10:34:25 something kernel: iwi0: firmware stuck in state 4, resetting > Jun 15 10:34:25 something kernel: iwi0: link state changed to DOWN > Jun 15 10:34:28 something kernel: iwi0: link state changed to UP > > Is this a known issue? Do you need any more info? Andrew already responded but if you want to disable bg scanning do: ifconfig iwi0 -bgscan though that won't help resolve the issue. You can also see what's going on at the 802.11 level with: wlandebug -i iwi0 scan FWIW I ran my 2195 card for many days w/ bg scanning and saw zero dropouts (including doing a full xorg portupgrade over wireless). My canonical test is to associate, run ping to a station on the far side of the ap, and then verify bg scanning doesn't cause any ping packets to be dropped. Sam
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4672BD16.70707>