Date: Sat, 29 Dec 2007 13:33:10 +0100 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: net@freebsd.org, current@freebsd.org Cc: kevlo@freebsd.org, sam@freebsd.org Subject: if_ral regression Message-ID: <86ir2hznnd.fsf@ds4.des.no>
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I upgraded my router cum firewall cum access point (soekris net4801 with
a cheap third-party ralink-based wlan adapter) from RELENG_6 to HEAD and
noticed what seems to be a regression in if_ral. After a certain amount
of use (i.e. actually having a client connected to it and transferring
data), the connection falters, and eventually the client can no longer
see even see the access point in a scan. Restarting the interface on
the router (/etc/rc.d/netif restart ral0) fixes it. I now have a cron
job that does this every five minutes. I still get occasional outages,
but all I have to do is wait a few minutes for the cron job to kick in.
Outages are clearly related to traffic; a sure-fire way to trigger one
is to start a backup job on my laptop (rsync to my file server). I will
lose the wlan connection repeatedly until I either stop trying or run
the script with a bandwidth limit.
des@soe ~% uname -a
FreeBSD soe.des.no 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Sat Dec 15 20:46:29 =
UTC 2007 des@pwd.des.no:/usr/obj/usr/src/sys/soe i386
des@soe ~% kldstat -v
Id Refs Address Size Name
1 18 0xc0400000 33fdfc kernel (/boot/soe/kernel)
2 1 0xc0740000 7690 if_sis.ko (/boot/soe/if_sis.ko)
3 2 0xc0748000 1dbe0 miibus.ko (/boot/soe/miibus.ko)
4 1 0xc0766000 18e28 if_ral.ko (/boot/soe/if_ral.ko)
5 4 0xc077f000 2a95c wlan.ko (/boot/soe/wlan.ko)
6 1 0xc07aa000 2cb0 wlan_acl.ko (/boot/soe/wlan_acl.ko)
7 1 0xc07ad000 1924 wlan_scan_ap.ko (/boot/soe/wlan_scan_ap.ko)
8 1 0xc107f000 6000 geom_md.ko (/boot/soe/geom_md.ko)
9 1 0xc10f9000 2000 pflog.ko (/boot/soe/pflog.ko)
10 1 0xc10fb000 2f000 pf.ko (/boot/soe/pf.ko)
11 4 0xc118d000 a000 netgraph.ko (/boot/soe/netgraph.ko)
12 1 0xc119c000 3000 ng_ether.ko (/boot/soe/ng_ether.ko)
13 1 0xc11a8000 5000 ng_pppoe.ko (/boot/soe/ng_pppoe.ko)
14 1 0xc11ad000 4000 ng_socket.ko (/boot/soe/ng_socket.ko)
des@soe ~% grep ral0 /var/run/dmesg.boot
ral0: <Ralink Technology RT2560> mem 0xa0004000-0xa0005fff irq 11 at device=
10.0 on pci0
ral0: MAC/BBP RT2560 (rev 0x04), RF RT2525
ral0: Ethernet address: 00:08:a1:8d:2f:73
ral0: [ITHREAD]
des@soe ~% pciconf -lv
[...]
ral0@pci0:0:10:0: class=3D0x028000 card=3D0x00201371 chip=3D0x0201181=
4 rev=3D0x01 hdr=3D0x00
vendor =3D 'Ralink Technology, Corp'
device =3D '0x03011814 Zonet ZEW1601 (Ralink Chipset) 802.11b/g WLA=
N Card'
class =3D network
[...]
des@soe ~% ifconfig ral0
ral0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 00:08:a1:8d:2f:73
inet 10.0.11.1 netmask 0xffffff00 broadcast 10.0.11.255
media: IEEE 802.11 Wireless Ethernet autoselect mode 11g <hostap>
status: associated
ssid des.no channel 1 (2412 Mhz 11g) bssid 00:08:a1:8d:2f:73
authmode OPEN privacy OFF txpower 50 scanvalid 60 bgscan
bgscanintvl 300 bgscanidle 250 roam:rssi11g 7 roam:rate11g 5
protmode CTS dtimperiod 1
DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no
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