kern/45081: "ath0: device timeout", then wifi connection is dropped momentarily

[rcm%volente.us@localhost]

>Number:         45081
>Category:       kern
>Synopsis:       "ath0: device timeout", then wifi connection is dropped 
>momentarily
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jun 17 18:15:00 +0000 2011
>Originator:     Ron McDowell
>Release:        NetBSD 5.1 (ALLIN1) #1: Sun Jun 12 10:57:20 CDT 2011
>Organization:
Volente Services Corp.
>Environment:
NetBSD allin1 5.1 NetBSD 5.1 (ALLIN1) #1: Sun Jun 12 10:57:20 CDT 2011  
rcm%d430.volente.us@localhost:/usr/src/sys/arch/i386/compile/ALLIN1 i386


>Description:
This is just a GENERIC kernel with "options GATEWAY" enabled.

I'm getting lots of these messages [here's one hour's worth]:
Jun 13 01:17:53 alix2 /netbsd: ath0: device timeout (txq 8, txintrperiod 5)
Jun 13 01:18:44 alix2 /netbsd: ath0: device timeout (txq 1, txintrperiod 4)
Jun 13 01:19:12 alix2 /netbsd: ath0: device timeout (txq 1, txintrperiod 3)
Jun 13 01:19:20 alix2 /netbsd: ath0: device timeout (txq 1, txintrperiod 2)
Jun 13 01:32:56 alix2 /netbsd: ath0: device timeout (txq 8, txintrperiod 1)
Jun 13 01:36:06 alix2 /netbsd: ath0: device timeout (txq 8, txintrperiod 1)
Jun 13 01:36:37 alix2 /netbsd: ath0: device timeout (txq 8, txintrperiod 1)
Jun 13 01:48:38 alix2 /netbsd: ath0: device timeout (txq 8, txintrperiod 1)
Jun 13 01:56:07 alix2 /netbsd: ath0: device timeout (txq 8, txintrperiod 1)


Hardware is an Alix 2D13 box with 
http://store.netgate.com/ALFA-AWPCI085H-80211abg-1000mW-miniPCI-Card-P59C26.aspx
 
for an Atheros-besed wifi card.

Jun 15 17:06:29 allin1 dhcpd: DHCPREQUEST for 172.17.5.14 from 
00:1b:77:01:39:c6 via ath0
Jun 15 17:06:29 allin1 dhcpd: DHCPACK on 172.17.5.14 to 
00:1b:77:01:39:c6 via ath0
Jun 15 17:06:39 allin1 dhcpd: DHCPREQUEST for 172.17.5.14 from 
00:1b:77:01:39:c6 via ath0
Jun 15 17:06:39 allin1 dhcpd: DHCPACK on 172.17.5.14 to 
00:1b:77:01:39:c6 via ath0
Jun 15 17:06:53 allin1 dhcpd: DHCPREQUEST for 172.17.5.14 from 
00:1b:77:01:39:c6 via ath0
Jun 15 17:06:53 allin1 dhcpd: DHCPACK on 172.17.5.14 to 
00:1b:77:01:39:c6 via ath0
Jun 15 17:07:03 allin1 dhcpd: DHCPREQUEST for 172.17.5.14 from 
00:1b:77:01:39:c6 via ath0
Jun 15 17:07:03 allin1 dhcpd: DHCPACK on 172.17.5.14 to 
00:1b:77:01:39:c6 via ath0
Jun 15 17:07:15 allin1 dhcpd: DHCPREQUEST for 172.17.5.14 from 
00:1b:77:01:39:c6 via ath0
Jun 15 17:07:15 allin1 dhcpd: DHCPACK on 172.17.5.14 to 
00:1b:77:01:39:c6 via ath0
Jun 15 17:07:15 allin1 dhcpd: send_packet: Host is down

I'm trying to use this as a router/access point, so it needs to stay up without 
dropping connections. I'd be happy to try any patches for this if it'll help.

dmesg.boot:
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007, 2008, 2009, 2010
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 5.1 (ALLIN1) #1: Sun Jun 12 10:57:20 CDT 2011
        rcm%d430.volente.us@localhost:/usr/src/sys/arch/i386/compile/ALLIN1
total memory = 255 MB
avail memory = 239 MB
timecounter: Timecounters tick every 10.000 msec
timecounter: Timecounter "i8254" frequency 1193182 Hz quality 100
Generic PC
mainbus0 (root)
ACPI Error (tbxfroot-0308): A valid RSDP was not found [20080321]
ACPI: unable to initialize ACPI tables: AE_NOT_FOUND
cpu0 at mainbus0: AMD 586-class, 498MHz, id 0x5a2
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
pchb0 at pci0 dev 1 function 0
pchb0: vendor 0x1022 product 0x2080 (rev. 0x33)
glxsb0 at pci0 dev 1 function 2: RNG AES
vr0 at pci0 dev 9 function 0: VIA VT6105M (Rhine III) 10/100 Ethernet
vr0: interrupting at irq 10
vr0: Ethernet address: 00:0d:b9:21:fa:54
ukphy0 at vr0 phy 1: Generic IEEE 802.3u media interface
ukphy0: OUI 0x0002c6, model 0x0034, rev. 3
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
vr1 at pci0 dev 10 function 0: VIA VT6105M (Rhine III) 10/100 Ethernet
vr1: interrupting at irq 11
vr1: Ethernet address: 00:0d:b9:21:fa:55
ukphy1 at vr1 phy 1: Generic IEEE 802.3u media interface
ukphy1: OUI 0x0002c6, model 0x0034, rev. 3
ukphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
vr2 at pci0 dev 11 function 0: VIA VT6105M (Rhine III) 10/100 Ethernet
vr2: interrupting at irq 15
vr2: Ethernet address: 00:0d:b9:21:fa:56
ukphy2 at vr2 phy 1: Generic IEEE 802.3u media interface
ukphy2: OUI 0x0002c6, model 0x0034, rev. 3
ukphy2: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
ath0 at pci0 dev 12 function 0
ath0: interrupting at irq 9
ath0: 11a rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
ath0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
ath0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 
36Mbps 48Mbps 54Mbps
ath0: turboA rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
ath0: mac 10.5 phy 6.1 radio 6.3
gcscpcib0 at pci0 dev 15 function 0
gcscpcib0: vendor 0x1022 product 0x2090 (rev. 0x03)
timecounter: Timecounter "gcscpcib0" frequency 3579545 Hz quality 1000
gcscpcib0: Watchdog Timer via MFGPT0, GPIO
gpio0 at gcscpcib0: 32 pins
viaide0 at pci0 dev 15 function 2
viaide0: Advanced Micro Devices CS5536 IDE Controller (rev. 0x01)
viaide0: bus-master DMA support present
viaide0: primary channel wired to compatibility mode
viaide0: primary channel interrupting at irq 14
atabus0 at viaide0 channel 0
viaide0: secondary channel wired to compatibility mode
viaide0: secondary channel ignored (disabled)
ohci0 at pci0 dev 15 function 4: vendor 0x1022 product 0x2094 (rev. 0x02)
ohci0: interrupting at irq 12
ohci0: OHCI version 1.0, legacy support
usb0 at ohci0: USB revision 1.0
gcscehci0 at pci0 dev 15 function 5: vendor 0x1022 product 0x2095 (rev. 0x02)
gcscehci0: interrupting at irq 12
gcscehci0: EHCI version 1.0
gcscehci0: companion controller, 4 ports each: ohci0
usb1 at gcscehci0: USB revision 2.0
isa0 at gcscpcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com0: console
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
attimer0 at isa0 port 0x40-0x43: AT Timer
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker (CPU-intensive output)
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff
npx0: reported by CPUID; using exception 16
attimer0: attached to pcppi0
isapnp0: no ISA Plug 'n Play devices found
timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
uhub0 at usb0: vendor 0x1022 OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 4 ports with 4 removable, self powered
uhub1 at usb1: vendor 0x1022 EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub1: 4 ports with 4 removable, self powered
wd0 at atabus0 drive 0: <SanDisk SDCFH-002G>
wd0: drive supports 1-sector PIO transfers, LBA addressing
wd0: 1907 MB, 3875 cyl, 16 head, 63 sec, 512 bytes/sect x 3906560 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2
wd0(viaide0:0:0): using PIO mode 4, DMA mode 2 (using DMA)
Kernelized RAIDframe activated
pad0: outputs: 44100Hz, 16-bit, stereo
audio0 at pad0: half duplex, playback, capture
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
warning: no /dev/console

>How-To-Repeat:
Boot the machine, watch for the messages on the console within 5 minutes or so.
>Fix: