Date: Tue, 19 Jul 2005 12:12:35 +0200 From: Johann Hugo <jhugo@icomtek.csir.co.za> To: freebsd-current@freebsd.org Subject: Re: Recent fragility with if_wi, 802.11 adhoc/wep, and Tiger Message-ID: <200507191212.36044.jhugo@icomtek.csir.co.za> In-Reply-To: <42DCC637.2050103@FreeBSD.org> References: <20050719094905.F15510@fledge.watson.org> <42DCC637.2050103@FreeBSD.org>
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On Tuesday 19 July 2005 11:21, Alex Dupre wrote: > Robert Watson wrote: > > I fairly regularly use 802.11 adhoc with WEP to communicate between my > > 6.x/7.x FreeBSD notebook using if_wi, and my Apple PowerBook running Mac > > OS X Tiger. A few days ago, when I updated from a June to a July HEAD > > revision, this became quite "fragile". > > I was wondering if anyone else has seen this problem, though. > > I have a (not so) similar problem with my atheros based D-Link DWL-G650 > card with late CURRENTs. The problem is very strange: I can connect > stablily to my neighbor's 11g wireless network (even if the signal is > lower than my D-Link DI-624 AP) and I hardly can connect to my AP. When > it happens, the connection goes down after few seconds (no carrier) and > I cannot reconnect anymore. This used to work with older current (about > a month ago). I though the AP was broken, but I have a 11b device (voip > phone) that can connect without problems (yes, I tried to connect the > card in 11b mode, w/ & w/o wep, but it's the same). > Anyone seeing this? I am also getting problems with my atheros cards. When the connection goes down I'm seeing a lot of "rx failed 'cuz of PHY err" and "CCK timing" errors. lab3# athstats 8894 tx management frames 5 tx frames discarded prior to association 887 tx failed 'cuz too many retries 13077 long on-chip tx retries 7 tx frames with no ack marked 9969 rx failed 'cuz of bad CRC 138910 rx failed 'cuz of PHY err 138888 CCK timing 22 CCK restart 1 beacons transmitted 39 periodic calibrations 1180 rate control checks 25 rate control dropped xmit rate rssi of last ack: 15 avg recv rssi: 44 1 switched default/rx antenna Antenna profile: [1] tx 7720 rx 29817 [2] tx 292 rx 37 With tcpdump -y IEEE802_11 I can see the packets, but without -y IEEE802_11 there is nothing. Johann Hugo
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