FreeBSD 7.0-RC2 ath wireless issues
Ian Smith
ismith00 at yahoo.com
Mon Feb 25 13:49:46 UTC 2008
----- Original Message ----
From: Sam Leffler <sam at errno.com>
To: Ian Smith <ismith00 at yahoo.com>
Cc: freebsd-mobile at freebsd.org
Sent: Sunday, February 24, 2008 8:36:11 PM
Subject: Re: FreeBSD 7.0-RC2 ath wireless issues
Ian
Smith
wrote:
>
Hello
list,
>
>
I
have
some
issues
with
an
Atheros
card
in
a
Dell
Inspiron
6000
that
I
was
hoping
someone
may
be
able
to
shed
some
light
on.
I
can
associate
with
an
access
point
but
am
unable
to
connect
to
anything
via
the
wireless
card.
The
card
appears
to
be
associated
(see
below)
but
I
am
unable
to
connect/ping
the
router
or
anything
connected/beyond
it.
Please
see
the
following
for
more
details:
>
>
Hardware
info:
>
Laptop:
Dell
Inspiron
6000
>
Wireless
Card:
Complex
WLM54G23
(http://www.msdist.co.uk/product_compex_WLM54G23_200mW_miniPCI.php)
>
>
FreeBSD
output:
>
root#
uname
-a
>
FreeBSD
dmon.bsd.home
7.0-RC2
FreeBSD
7.0-RC2
#0:
Sun
Feb
24
09:08:01
GMT
2008
root at my.domain:/usr/obj/usr/src/sys/GENERIC
i386
>
>
root#
dmesg
|
grep
ath0
>
ath0:
<Atheros
5212>
mem
0xdfcf0000-0xdfcfffff
irq
17
at
device
3.0
on
pci3
>
ath0:
[ITHREAD]
>
ath0:
using
obsoleted
if_watchdog
interface
>
ath0:
Ethernet
address:
xx:xx:xx:xx:xx:xx
>
ath0:
mac
10.4
phy
6.1
radio
6.3
>
>
root#
pciconf
-lv
>
....
>
vendor
=
'Atheros
Communications
Inc.'
>
device
=
'AR5006
family
802.11abg
Wireless
NIC'
>
class
=
network
>
subclass
=
ethernet
>
>
root#
sysctl
hw.ath
>
hw.ath.hal.swba_backoff:
0
>
hw.ath.hal.sw_brt:
10
>
hw.ath.hal.dma_brt:
2
>
hw.ath.hal.version:
0.9.20.3
>
hw.ath.txbuf:
200
>
hw.ath.rxbuf:
40
>
hw.ath.regdomain:
0
>
hw.ath.countrycode:
0
>
hw.ath.xchanmode:
1
>
hw.ath.outdoor:
1
>
hw.ath.calibrate:
30
>
>
root#
sysctl
dev.ath.0
>
dev.ath.0.%desc:
Atheros
5212
>
dev.ath.0.%driver:
ath
>
dev.ath.0.%location:
slot=3
function=0
>
dev.ath.0.%pnpinfo:
vendor=0x168c
device=0x001b
subvendor=0x168c
subdevice=0x2063
class=0x020000
>
dev.ath.0.%parent:
pci3
>
dev.ath.0.smoothing_rate:
95
>
dev.ath.0.sample_rate:
10
>
dev.ath.0.countrycode:
0
>
dev.ath.0.regdomain:
0
>
dev.ath.0.slottime:
9
>
dev.ath.0.acktimeout:
48
>
dev.ath.0.ctstimeout:
48
>
dev.ath.0.softled:
0
>
dev.ath.0.ledpin:
0
>
dev.ath.0.ledon:
0
>
dev.ath.0.ledidle:
2700
>
dev.ath.0.txantenna:
0
>
dev.ath.0.rxantenna:
2
>
dev.ath.0.diversity:
1
>
dev.ath.0.txintrperiod:
5
>
dev.ath.0.diag:
0
>
dev.ath.0.tpscale:
0
>
dev.ath.0.tpc:
0
>
dev.ath.0.tpack:
63
>
dev.ath.0.tpcts:
63
>
dev.ath.0.monpass:
24
>
>
Attempting
to
get
an
address
from
the
AP
after
associating:
>
root#
dhclient
ath0
>
DHCPDISCOVER
on
ath0
to
255.255.255.255
port
67
interval
6
>
DHCPDISCOVER
on
ath0
to
255.255.255.255
port
67
interval
13
>
DHCPDISCOVER
on
ath0
to
255.255.255.255
port
67
interval
14
>
DHCPDISCOVER
on
ath0
to
255.255.255.255
port
67
interval
17
>
DHCPDISCOVER
on
ath0
to
255.255.255.255
port
67
interval
11
>
No
DHCPOFFERS
received.
>
No
working
leases
in
persistent
database
-
sleeping.
>
>
With
manual
IP
address:
>
root#
ifconfig
-v
ath0
>
ath0:
flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST>
metric
0
mtu
1500
>
ether
xx:xx:xx:xx:xx:xx
>
inet
xxx.xxx.xxx.xxx
netmask
0xffffff00
broadcast
xxx.xxx.xxx.255
>
media:
IEEE
802.11
Wireless
Ethernet
autoselect
(OFDM/54Mbps)
>
status:
associated
>
ssid
XXXXX
channel
11
(2462
Mhz
11g)
bssid
xx:xx:xx:xx:xx:xx
>
authmode
OPEN
privacy
OFF
deftxkey
UNDEF
powersavemode
OFF
>
powersavesleep
100
txpower
31.5
txpowmax
23.0
rtsthreshold
2346
>
fragthreshold
2346
bmiss
7
scanvalid
60
bgscan
bgscanintvl
300
>
bgscanidle
250
roam:rssi11a
7
roam:rate11a
12
roam:rssi11b
7
>
roam:rate11b
1
roam:rssi11g
7
roam:rate11g
5
-pureg
protmode
CTS
-ht
>
-htcompat
-ampdu
ampdulimit
8k
ampdudensity
-
-amsdu
-shortgi
>
htprotmode
RTSCTS
-puren
-wme
burst
-ff
-dturbo
roaming
AUTO
>
bintval
100
>
>
In
either
case
pinging
anything
on
the
network
results
in
the
following:
>
root#
ping
xxx.xxx.xxx.xxx
>
PING
xxx.xxx.xxx.xxx
(xxx.xxx.xxx.xxx):
56
data
bytes
>
^C
>
---
xxx.xxx.xxx.xxx
ping
statistics
---
>
9
packets
transmitted,
0
packets
received,
100.0%
packet
loss
>
>
For
the
purpose
of
this
testing
the
AP
was
running
without
a
firewall,
encryption
or
an
access
list.
>
>
Interestingly
when
I
run
`tcpdump
-ttt
-vv
-n
-i
ath0`
I
am
able
to
see
broadcasts
from
other
clients
on
the
network.
Also
if
I
run
`
airodump-ng
--band
bg
ath0`
I
can
see
a
whole
host
of
wireless
networks
including
the
one
I
am
trying
to
connect
to.
>
>
Any
information/advice
would
be
much
appreciated.
>
>
The
first
thing
to
check
is
whether
errors
are
being
counted.
netstat
-in,
wlanstats,
athstats
are
useful
tools.
Next
I'd
use
tcpdump
to
inspect
traffic
starting
at
the
802.3
layer
and
going
down;
e.g.
tcpdump
-n
-i
ath0
-p
then
tcpdump
-n
-i
ath0
-p
-y
IEEE802_11
then
finally
tcpdump
-n
-i
ath0
-p
-y
IEEE802_11_RADIO
If
you
are
associated
then
packets
should
be
coming
through
so
you
should
find
them
at
some
level.
Once
you
find
them
you
need
to
figure
out
why
they
aren't
being
handled
correctly;
the
stats
usually
tell
you
where+when
frames
are
dropped.
You
can
also
turn
on
debug
msgs
in
net80211
with
wlandebug
if
you
believe
the
issue
is
there.
You
say
this
network
is
running
open
so
presumably
there's
no
need
to
disable
crypto
(the
first
step
one
should
do
whenever
having
problems
like
this).
Sam
_______________________________________________
freebsd-mobile at freebsd.org
mailing
list
http://lists.freebsd.org/mailman/listinfo/freebsd-mobile
To
unsubscribe,
send
any
mail
to
"freebsd-mobile-unsubscribe at freebsd.org"
###############################
###############################
Hi Sam,
I have had a go at debugging the interface but things just don't add up. While requesting an address using `dhclient ath0` I'm not seeing any lost packets with `netstat -in`:
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
....
ath0 1500 <Link#4> xx:xx:xx:xx:xx:xx 12 0 2 0 0
ath0 1500 0.0.0.0/8 0.0.0.0 0 - 0 - -
....
I'm not sure if this sheds any light on things but `athstats` is showing "0M current transmit rate":
root# athstats
9 data frames received
2 data frames transmit
168 mib overflow interrupts
0M current transmit rate <----------------------
50 tx management frames
129 tx frames discarded prior to association
48 tx frames with no ack marked
2 tx frames with short preamble
22 periodic calibrations
34 rssi of last ack
36 avg recv rssi
-91 rx noise floor
1 switched default/rx antenna
Antenna profile:
[1] tx 50 rx 1052
Here is the rest of the wlanstats and tcpdump info:
root# wlanstats
1267 rx beacon frames
1 rx element unknown
13 rx frame chan mismatch
1 active scans started
1284 rx management frames
12 total data frames received
12 multicast data frames received
36M current transmit rate
35 current rssi
35 current signal (dBm)
root# tcpdump -n -i ath0 -p
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ath0, link-type EN10MB (Ethernet), capture size 96 bytes
13:21:06.140535 arp who-has 192.168.1.90 tell 192.168.1.1
13:21:07.140223 arp who-has 192.168.1.90 tell 192.168.1.1
13:21:08.140218 arp who-has 192.168.1.90 tell 192.168.1.1
13:21:16.913634 arp who-has 192.168.1.90 tell 192.168.1.1
13:21:17.910161 arp who-has 192.168.1.90 tell 192.168.1.1
13:21:18.910151 arp who-has 192.168.1.90 tell 192.168.1.1
13:21:23.464980 arp who-has 192.168.1.90 tell 192.168.1.1
13:21:24.460096 arp who-has 192.168.1.90 tell 192.168.1.1
13:21:25.460086 arp who-has 192.168.1.90 tell 192.168.1.1
13:21:32.215510 arp who-has 192.168.1.90 tell 192.168.1.1
13:21:33.215027 arp who-has 192.168.1.90 tell 192.168.1.1
13:21:34.215016 arp who-has 192.168.1.90 tell 192.168.1.1
^C
12 packets captured
12 packets received by filter
0 packets dropped by kernel
root# tcpdump -n -i ath0 -p -y IEEE802_11
tcpdump: data link type IEEE802_11
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ath0, link-type IEEE802_11 (802.11), capture size 96 bytes
13:22:35.447955 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:35.550347 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:35.652739 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:35.755141 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:35.857539 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:35.959939 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:36.062348 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:36.164735 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:36.267134 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:36.369533 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:36.471945 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:36.574331 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
....
13:22:40.158300 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:40.260702 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:22:40.363106 Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
^C
49 packets captured
49 packets received by filter
0 packets dropped by kernel
root# tcpdump -n -i ath0 -p -y IEEE802_11_RADIO
tcpdump: data link type IEEE802_11_RADIO
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ath0, link-type IEEE802_11_RADIO (802.11 plus BSD radio information header), capture size 96 bytes
13:24:02.896844 467892316us tsft 19.5 Mb/s -65dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:02.999220 467994716us tsft 19.5 Mb/s -65dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:03.101619 468097116us tsft 19.5 Mb/s -65dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:03.204016 468199518us tsft 19.5 Mb/s -66dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:03.306415 468301916us tsft 19.5 Mb/s -65dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:03.408813 468404314us tsft 19.5 Mb/s -64dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:03.511211 468506716us tsft 19.5 Mb/s -64dB signal -95dB noise antenna 2 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:03.613608 468609118us tsft 19.5 Mb/s -63dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:03.716005 468711516us tsft 19.5 Mb/s -66dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:03.818414 468813916us tsft 19.5 Mb/s -66dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:03.920812 468916316us tsft 19.5 Mb/s -66dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:04.023204 469018718us tsft 19.5 Mb/s -65dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:04.125600 469121116us tsft 19.5 Mb/s -64dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:04.227999 469223518us tsft 19.5 Mb/s -65dB signal -95dB noise antenna 2 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:04.330399 469325912us tsft 19.5 Mb/s -64dB signal -95dB noise antenna 1 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:04.432799 469428318us tsft 19.5 Mb/s -64dB signal -95dB noise antenna 2 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:04.535198 469530716us tsft 19.5 Mb/s -64dB signal -95dB noise antenna 2 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:04.637595 469633118us tsft 19.5 Mb/s -65dB signal -95dB noise antenna 2 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:04.739996 469735514us tsft 19.5 Mb/s -64dB signal -95dB noise antenna 2 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
13:24:04.842394 469837918us tsft 19.5 Mb/s -65dB signal -95dB noise antenna 2 [0x00000012] Beacon (XXXXX) [1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 Mbit] ESS CH: 11
^C
20 packets captured
23 packets received by filter
0 packets dropped by kernel
All of the above were run when I was trying to get an address with `dhclient ath0`
Finally with a static address I see the following:
root# athstats
50 data frames received
2 data frames transmit
168 mib overflow interrupts
54M current transmit rate <--------------------- no longer 0.... ?
152 tx management frames
129 tx frames discarded prior to association
144 tx frames with no ack marked
104 tx frames with short preamble
91 periodic calibrations
32 avg recv rssi
-95 rx noise floor
13 switched default/rx antenna
Antenna profile:
[1] tx 148 rx 7653
[2] tx 0 rx 376
root# wlanstats
2 rx discard 'cuz dup
3 rx discard mgt frames
8247 rx beacon frames
2 rx element unknown
26 rx frame chan mismatch
3 active scans started
8284 rx management frames
53 total data frames received
53 multicast data frames received
6 total data frames transmit
54M current transmit rate
34 current rssi
34 current signal (dBm)
An interesting point - what is the significance of the first athstats having only 1 entry in "Antenna profile" and the second showing 1 and 2? Also if I'm able to see traffic in the air one would assume that the card is receiving ok and that the problem lies somewhere in the transmitting of packets? I'll check the connections on the card to make sure that it isn't in fact a wiring issue.
Thanks,
Ian
____________________________________________________________________________________
Never miss a thing. Make Yahoo your home page.
http://www.yahoo.com/r/hs
More information about the freebsd-mobile
mailing list