Re: LOR wlan0 wi0

On Sat, 08 Aug 2009 08:59:27 -0700
Sam Leffler <sam_at_errno.com> wrote:

> Robert wrote:
> > Greetings
> > 
> > I have just upgraded a laptop on my network to current:
> > 
> > [root_at_hp] ~# uname -a
> > FreeBSD hp.shasta204.local 8.0-BETA2 FreeBSD 8.0-BETA2 #1: Fri Aug
> > 7 11:15:24 PDT 2009     root_at_vaio.shasta204.local:/usr/ob
> > j/usr/src/sys/VESA  i386
> > 
> > I have made the changes in rc.conf after reading UPDATING and
> > rc.conf defaults. Here is the bits from rc.conf
> > 
> > wlans_wi0=wlan0   # I have tried with quotes around wlan0 with 
> >                   # no difference. 
> > ifconfig_wlan0="DHCP ssid MY_SSID channel any wepmode on \
> > deftxkey 1 wepkey 0xSecretNumber78bf" 
> > 
> > # ifconfig_re0="DHCP"
> > 
> > My wlan0 interface comes up but never retrieves an IP from the
> > router. 
> > 
> > [root_at_hp] ~# ifconfig -a
> > plip0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> metric 0 mtu 1500
> > lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
> >         options=3<RXCSUM,TXCSUM>
> >         inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
> >         inet6 ::1 prefixlen 128
> >         ether 00:09:5b:25:5e:b3
> >         media: IEEE 802.11 Wireless Ethernet autoselect mode 11b
> >         status: associated
> > wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0
> > mtu 1500 ether 00:09:5b:25:5e:b3
> >         inet 0.0.0.0 netmask 0xff000000 broadcast 255.255.255.255
> >         media: IEEE 802.11 Wireless Ethernet DS/11Mbps mode 11b
> >         status: associated
> >         ssid MY_SSID channel 11 (2462 Mhz 11b) bssid
> > 00:1c:df:f9:ad:fc country US authmode OPEN privacy ON deftxkey 1
> > wepkey 1:104-bit txpower 0 bmiss 7 scanvalid 60
> > 
> > Searching dmesg I see this
> > 
> > wlan0: Ethernet address: 00:09:5b:25:5e:b3
> > lock order reversal:
> >  1st 0xc2c04014 wi0_com_lock (wi0_com_lock)
> > _at_ /usr/src/sys/net80211/ieee80211_scan.c:806 2nd 0xc2bf2008 wi0
> > (network driver) _at_ /usr/src/sys/dev/wi/if_wi.c:1083 KDB: stack
> > backtrace:
> > db_trace_self_wrapper(c0c7746e,cca4ea78,c08c1435,c08b217b,c0c7a303,...)
> > at db_trace_self_wrapper+0x26
> > kdb_backtrace(c08b217b,c0c7a303,c292f228,c2929040,cca4ead4,...) at
> > kdb_backtrace+0x29
> > _witness_debugger(c0c7a303,c2bf2008,c2af88d0,c2929040,c0c6775c,...)
> > at _witness_debugger+0x25
> > witness_checkorder(c2bf2008,9,c0c6775c,43b,0,...) at
> > witness_checkorder+0x839
> > _mtx_lock_flags(c2bf2008,0,c0c6775c,43b,c2bf2008,...) at
> > _mtx_lock_flags+0xc4
> > wi_raw_xmit(c2cc5000,c2cd0000,cca4ebba,10,c2c9c2a4,...) at
> > wi_raw_xmit+0x3e
> > ieee80211_send_probereq(c2cc5000,c2c9c2a4,c0bfd600,c0bfd600,c2ac2018,...)
> > at ieee80211_send_probereq+0x488
> > ieee80211_probe_curchan(c2c9c000,0,c0c8aa85,326,cca4ec30,...) at
> > ieee80211_probe_curchan+0x93
> > scan_curchan(c2ac2000,190,c0c8aa85,396,246,...) at scan_curchan+0x49
> > scan_task(c2ac2000,1,c0c78c6a,54,c2af4d1c,...) at scan_task+0x33a
> > taskqueue_run(c2af4d00,c2af4d1c,0,c0c6a13b,0,...) at
> > taskqueue_run+0x10b
> > taskqueue_thread_loop(c2c04074,cca4ed38,c0c6f7cc,33e,c0dc60a0,...)
> > at taskqueue_thread_loop+0x68 fork_exit(c08ba5b0,c2c04074,cca4ed38)
> > at fork_exit+0xb8 fork_trampoline() at fork_trampoline+0x8 --- trap
> > 0, eip = 0, esp = 0xcca4ed70, ebp = 0 --- Starting Network: lo0.
> > 
> > The PCMCIA is and older Netgear 802.11b that was working fine on 7
> > stable. I have searched the archives and tried changing things in
> > rc.conf but I can not seem to make this work.
> > 
> > 
> > Any help or direction will be greatly appreciated.
> 
> Ignore the LOR.  The first thing to do is simplify your config;
> remove crypto.  If you can pass data frames then your problem is in
> the crypto setup.  If not then you have unencrypted data to examine
> for problems.
> 
> Use tools/tools/net80211/wlanstats to check for errors.  You can
> trace packet traffic with tcpdump to see if frames are moving.
> 
> You also don't identify your card.  wi in 8.0 works with a subset of
> the cards in RELENG_7 so your card may not work correctly--though
> since you appear to have associated that doesn't seem like the issue
> (cards that don't work are unlikely to successfully associate).
> 
> 	Sam

Sam

Thanks for responding and for all of the fine work you are doing.

I thought that I had tried without the crypto before but I either
didn't or messed up. Anyway, The interface links up fine without WEP
activated.

I am able to get on the network and NFS loads all file systems from
other boxes.

Re-enabling WEP on the router (Belkin) and in rc.conf, causes the same
failure as show above: associated without an IP.

The interface card is old. It shows to be a Netgear MA401. I have
ordered a newer model of the Netgear card. It is a WG511T which is
supposed to have an atheros chipset. I should receive this card in about
a week. I really do not know if any of this is relevant to my problem.

On this laptop, because it is old and slow, I NFS mount /usr/src from a
faster machine. So, wlanstats is not available when I do not have an IP.

Running tcpdump -vv shows a whole lot of stuff. It starts with wlan0:
no IPv4 assigned, so I do not know if the rest is important. There are
many lines which contain "Unknown SSAP" and "Unknown DSAP". I have
copied some of it to a file which I can forward if it of any help.

Robert