RE: ath0 goes down periodically

On Thursday I reported my problem with atheros and no response.
Now we see it is common problem.

I used ath_rate_onoe, ath_rate_amrr and now last I am testing
ath_rate_sample, and yet no "kernel: ath0: device timeout" message turns up
in /var/log/messages since last reboot after recompilation kornel with
sample rate.

But U use sample rate and have the same messages.
So choise of ath_rate does not have a influence on timeout.
Last panic was connection to mbuf.

My box went to panic state due to Atheros for many times, my friend advised
me to use this:
lsd# sysctl kern.ipc.maxsockbuf
kern.ipc.maxsockbuf: 2097152

For the present no panic, We will see. :(

U use hostap mode, I use client mode. U use 802.11b, I use 802.11a.

My athstats:

lsd# athstats
3 tx management frames
17 tx frames discarded prior to association
78 tx stopped 'cuz no xmit buffer
36876 tx failed 'cuz too many retries
4224534 long on-chip tx retries
1 tx frames with no ack marked
777988 tx frames with an alternate rate
7419 rx failed 'cuz of bad CRC
1052759 rx failed 'cuz frame too short
10361501 rx failed 'cuz of PHY err
    10360958 OFDM timing
    541 OFDM illegal service
    2 OFDM restart
4677 periodic calibrations
1 rfgain value change
rssi of last ack: 26
avg recv rssi: 26
15 switched default/rx antenna
Antenna profile:
[1] tx 32354058 rx 45291855
[2] tx    72289 rx     3319

My RSSI is about 26, so -95, signal from AP is about -69 dBm, strong enough.
Media selection is autoselect. Generally OFDM/18Mbps.

Daniel


-----Original Message-----
From: owner-freebsd-current_at_freebsd.org
[mailto:owner-freebsd-current_at_freebsd.org] On Behalf Of Emil Mikulic
Sent: Sunday, May 22, 2005 1:06 PM
To: freebsd-current_at_FreeBSD.org
Subject: ath0 goes down periodically

At home I have a FreeBSD 6-CURRENT machine with an ath card acting as an
access point.  Every once in a while, wireless traffic stops and I have
to log in to this machine and manually bounce the interface to get it
going again.

I noticed that when this sort of outage occurs I can't ping from the
hostap machine on the wifi interface.  It looks like the interface queue
is full. (?)

It just happened now so here are the diagnostics I can think of:

# ifconfig -v ath0
ath0: flags=8c43<UP,BROADCAST,RUNNING,OACTIVE,SIMPLEX,MULTICAST> mtu 1500
        inet 192.168.2.1 netmask 0xffffff00 broadcast 192.168.2.255
        inet6 fe80::209:5bff:fec8:6919%ath0 prefixlen 64 scopeid 0x3
        ether 00:09:5b:c8:69:19
        media: IEEE 802.11 Wireless Ethernet DS/11Mbps mode 11b <hostap>
        status: associated
        ssid ***** channel 6 (2437) bssid 00:09:5b:c8:69:19
        authmode SHARED privacy ON deftxkey 1
        wepkey 1:40-bit <**********> tx+rx+def
        powersavemode OFF powersavesleep 100 txpowmax 0 txpower 60
        rtsthreshold 2312 protmode CTS wme ssid SHOW apbridge dtimperiod 1
        bintval 100
        AC_BE cwmin  5 cwmax  7 aifs  3 txopLimit   0 -acm ack
              cwmin  5 cwmax 10 aifs  3 txopLimit   0 -acm
        AC_BK cwmin  5 cwmax 10 aifs  7 txopLimit   0 -acm ack
              cwmin  5 cwmax 10 aifs  7 txopLimit   0 -acm
        AC_VI cwmin  4 cwmax  5 aifs  1 txopLimit 188 -acm ack
              cwmin  4 cwmax  5 aifs  2 txopLimit 188 -acm
        AC_VO cwmin  3 cwmax  4 aifs  1 txopLimit 102 -acm ack
              cwmin  3 cwmax  4 aifs  2 txopLimit 102 -acm

# ping 192.168.2.1
PING 192.168.2.1 (192.168.2.1): 56 data bytes
64 bytes from 192.168.2.1: icmp_seq=0 ttl=64 time=0.191 ms
64 bytes from 192.168.2.1: icmp_seq=1 ttl=64 time=0.149 ms

# ping 192.168.2.2
PING 192.168.2.2 (192.168.2.2): 56 data bytes
ping: sendto: No buffer space available
ping: sendto: No buffer space available

/var/log/messages has a couple of recent lines saying
"kernel: ath0: device timeout"

The fix:
# ifconfig ath0 down
# ifconfig ath0 up
# ping 192.168.2.2
PING 192.168.2.2 (192.168.2.2): 56 data bytes
64 bytes from 192.168.2.2: icmp_seq=0 ttl=128 time=3.392 ms
64 bytes from 192.168.2.2: icmp_seq=1 ttl=128 time=0.886 ms

The card is a Netgear WG311T:
ath0: <Atheros 5212> mem 0xe8120000-0xe812ffff irq 11 at device 12.0 on pci0
ath0: Ethernet address: 00:09:5b:c8:69:19
ath0: mac 5.6 phy 4.1 radio 1.7

The kernel is a little old:
FreeBSD 6.0-CURRENT #4: Tue Apr  5 18:07:56 EST 2005

But all the relevant source files seem up to date:
# ident /boot/kernel/kernel | grep ath
     $FreeBSD: src/sys/dev/ath/ath_rate/sample/sample.c,v 1.8 2005/04/02
18:56:50 sam Exp $
     $FreeBSD: src/sys/dev/ath/if_ath.c,v 1.87 2005/04/04 02:34:14 sam Exp $
     $FreeBSD: src/sys/dev/ath/if_ath_pci.c,v 1.12 2005/03/05 19:06:12 imp
Exp $

(Latest if_ath.c is 1.88, the changelog says "honor new
IEEE80211_KEY_GROUP key flag")

This happens periodically.  I can't reproduce it at will, but it will
happen again eventually.  Is there anything further I can do to help
diagnose (and hopefully fix) this problem?

--Emil
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