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Hi,

I've already met this kind of behavior on a net4521 box when the wireless
interface is set to 802.11g hostap mode...

Konstantin

>-----Original Message-----
>From: current-users-owner@NetBSD.org [mailto:current-users-
>owner@NetBSD.org] On Behalf Of Andreas Wrede
>Sent: vendredi 14 janvier 2005 23:18
>To: NetBSD-current Discussion List
>Subject: mode 11g on ath(4) on Soekris net4801
>
>I am running 2.99.13 on Soekris net4801 am see strange behaviour of the
>ath  interface.  The interface is configured in hostap mode with no IP
>address. (A bridge0 interface is setup to bridge Ethernet traffic to
>the wirelss network.)
>
>ath0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu
>1500
>         ssid Planix nwkey xxxxxxxxxxxxx
>         powersave off
>         bssid 00:02:6f:20:f5:4a chan 11
>         address: 00:02:6f:20:f5:4a
>         media: IEEE802.11 autoselect mode 11b hostap
>         status: active
>         inet6 fe80::202:6fff:fe20:f54a%ath0 prefixlen 64 scopeid 0x4
>
>This configuration works fine.
>
>If I change the mode to 11g the system starts be behave erratic. At
>times, the amount of time the system spends processing interrupts goes
>to 100%, the system appears looked up for up to minutes at on end.
>Packet loss across the wireless link is greater that 70%. The interrupt
>rate then is anywhere from 120/sec to 19000/sec.  At other times the
>cpu usage is about what i expect (ie. interrupt cpu about 2 to 5 %) but
>the interrupt rate is still one or two orders of magnitude greater then
>the number of packets moved by the interface. (ie 500 interrupts for 2
>packets).
>
>What can I do to find out what is going on?
>
>
>
>
>NetBSD 2.99.13 (NET4801) #13: Thu Jan 13 12:36:33 EST 2005
>
>root@woffi.planix.com:/m5/netbsd-current/obj.i386/sys/arch/i386/
>compile/
>NET4801
>total memory = 127 MB
>avail memory = 121 MB
>BIOS32 rev. 0 found at 0xf7840
>mainbus0 (root)
>cpu0 at mainbus0: (uniprocessor)
>cpu0: National Semiconductor Geode GX1 (586-class), 266.65 MHz, id 0x540
>cpu0: features 808131<FPU,TSC,MSR,CX8>
>cpu0: features 808131<CMOV,MMX>
>cpu0: "Geode(TM) Integrated Processor by National Semi"
>cpu0: I-cache 12K uOp cache 8-way
>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 0 function 0
>pchb0: Cyrix MediaGX Built-in PCI Host Controller (rev. 0x00)
>sip0 at pci0 dev 6 function 0: NatSemi DP83815 10/100 Ethernet, rev 00
>sip0: interrupting at irq 10
>sip0: Ethernet address 00:00:24:c1:cf:18
>nsphyter0 at sip0 phy 0: DP83815 10/100 media interface, rev. 1
>nsphyter0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
>sip1 at pci0 dev 7 function 0: NatSemi DP83815 10/100 Ethernet, rev 00
>sip1: interrupting at irq 10
>sip1: Ethernet address 00:00:24:c1:cf:19
>nsphyter1 at sip1 phy 0: DP83815 10/100 media interface, rev. 1
>nsphyter1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
>sip2 at pci0 dev 8 function 0: NatSemi DP83815 10/100 Ethernet, rev 00
>sip2: interrupting at irq 10
>sip2: Ethernet address 00:00:24:c1:cf:1a
>nsphyter2 at sip2 phy 0: DP83815 10/100 media interface, rev. 1
>nsphyter2: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
>ath0 at pci0 dev 14 function 0
>ath0: interrupting at irq 11
>ath0: mac 5.6 phy 4.1 5ghz radio 1.7 2ghz radio 2.3
>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 36M
>bps 48Mbps 54Mbps
>ath0: turbo rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
>pcib0 at pci0 dev 18 function 0
>pcib0: National Semiconductor SC1100 PCI-ISA bridge (rev. 0x00)
>National Semiconductor SC1100 SMI/ACPI (miscellaneous bridge) at pci0
>dev 18 fun
>ction 1 not configured
>geodeide0 at pci0 dev 18 function 2
>geodeide0: AMD Geode SC1100 IDE controller (rev. 0x01)
>geodeide0: bus-master DMA support present
>geodeide0: primary channel wired to compatibility mode
>geodeide0: primary channel interrupting at irq 14
>atabus0 at geodeide0 channel 0
>geodeide0: secondary channel wired to compatibility mode
>geodeide0: secondary channel interrupting at irq 15
>atabus1 at geodeide0 channel 1
>National Semiconductor SC1100 X-Bus (miscellaneous bridge) at pci0 dev
>18 functi
>on 5 not configured
>ohci0 at pci0 dev 19 function 0: Compaq USB Controller (rev. 0x08)
>ohci0: interrupting at irq 5
>ohci0: OHCI version 1.0, legacy support
>usb0 at ohci0: USB revision 1.0
>uhub0 at usb0
>uhub0: Compaq OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
>uhub0: 3 ports with 3 removable, self powered
>isa0 at pcib0
>com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
>com0: console
>com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
>pcppi0 at isa0 port 0x61
>npx0 at isa0 port 0xf0-0xff: using exception 16
>IPsec: Initialized Security Association Processing.
>wd0 at atabus0 drive 0: <IBM-DMDM-10340>
>wd0: drive supports 16-sector PIO transfers, LBA addressing
>wd0: 342 MB, 695 cyl, 16 head, 63 sec, 512 bytes/sect x 700560 sectors
>wd0: 32-bit data port
>wd0(geodeide0:0:0): using PIO mode 0
>boot device: wd0
>root on wd0a dumps on wd0b
>root file system type: ffs
>cc_microset[0]: delta -55991983, resetting state
>ath0: creating bss 00:02:6f:20:f5:4a
>cc_microset[0]: delta 1755612, resetting state
>
>--
>	aew

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