kern/95710: iwi wont roam
Brad Huntting
huntting at glarp.com
Thu Apr 13 19:20:25 UTC 2006
>Number: 95710
>Category: kern
>Synopsis: iwi wont roam
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Apr 13 19:20:21 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator: Brad Huntting
>Release: FreeBSD 6.1-PRERELEASE i386
>Organization:
>Environment:
System: FreeBSD studious.glarp.com 6.1-PRERELEASE FreeBSD 6.1-PRERELEASE #5: Sat Feb 25 20:02:16 MST 2006 root at studious.glarp.com:/usr/src/sys/i386/compile/STUDIOUS i386
Panasonic CF-W4 laptop (Centrino) (Japanese model)
>Description:
PRO/Wireless 2915ABG MiniPCI Adapter (iwi) will not change base stations (roaming is broken)
>How-To-Repeat:
Load the if_iwi driver either at run time or at boot time,
run 'sh /etc/rc.d/netif start', connects to base station,
all appears well. Next, move to a new base station.
Running 'ifconfig iwi0' indicates the device is still
attached to the original base station: Running 'ifconfig
iwi0 scan' returns an empty list.
I tried 'ifconfig iwi0 roaming device' followed by 'ifconfig
iwi0 down up' but it froze and then crashed the machine.
After reloading once, I see the following messages
$ dmesg|grep iwi0|sort|uniq -c
2 iwi0: <Intel(R) PRO/Wireless 2915ABG> mem 0xb0101000-0xb0101fff irq 21 at device 4.0 on pci6
2 iwi0: Ethernet address: 00:12:f0:5e:b5:3c
1 iwi0: Please load firmware
2 iwi0: [GIANT-LOCKED]
1 iwi0: detached
2 iwi0: fatal error
2 iwi0: link state changed to UP
41 iwi0: unknown authentication state 1
>Fix:
I've been reloading the kernel module with the following
script as a workaround, but it's a kludge. Even with such
extreme measures, a reboot is sometimes required.
#!/usr/local/bin/sudo /bin/sh
set -x
sh /etc/rc.d/netif stop
sh /etc/rc.d/iwi stop
ifconfig iwi0 down
sleep 1
kldunload if_iwi
sleep 1
kldload if_iwi
sleep 1
sh /etc/rc.d/iwi start
sleep 1
sh /etc/rc.d/netif start
ifconfig iwi0 list scan
ifconfig iwi0
>Release-Note:
>Audit-Trail:
>Unformatted:
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