airo.o problem

[Ventsislav Genchev <vigour@atlantis.bg>]

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I've got a RedHat 9 Linux 2.4.20-20.9 box with Cisco aironet 350 series 
wireless adapter.
The problem appears when I start tcpdump on that interface. For few 
second everything seems normal, but after couple of second the traffic 
hangs down. The signal strength and quolity matter show that it's 
working just fine, but neither there is ping response or any traffic 
passes through the interface.
I maintain few linux boxes and noticed that problem with RedHat 8.0.
The latest Redhat distro hasing no problems is 7.3 with kernel 2.4.18-3.
Any latest version hangs down...

here is some informatios as recomended:

lsmod:
airo                   49672   1
ne2k-pci                7232   1
8390                    8524   0  [ne2k-pci]
8139too                18120   0  (unused)
mii                     3976   0  [8139too]
keybdev                 2976   0  (unused)
mousedev                5556   0  (unused)
hid                    22244   0  (unused)
input                   5856   0  [keybdev mousedev hid]
usb-uhci               26412   0  (unused)
usbcore                79040   1  [hid usb-uhci]
ext3                   70784   2
jbd                    51924   2  [ext3]

There is no indication fot trouble in /var/log/messages

Shell script .. hmm
(install Cisco Aironet 350 Series Wireless Adapter) and run:
#!/bin/bash
modprobe airo
ifconfig eth0 192.168.0.1
echo "SSID" > /proc/driver/aironet/eth0/SSID
tcpdump -qn -i eth0

Notice that there must be a traffic going throug the access poit (some 
other clients must be connected too, and generate traffic). I've tested 
the situation when only I was a client in that AP and no problem 
occured. (Hope that will help you)

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 6
model name      : Celeron (Mendocino)
stepping        : 5
cpu MHz         : 367.507
cache size      : 128 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca 
cmov pat pse36 mmx fxsr
bogomips        : 734.00

But I may be repeating myself by saying that this is not a single box 
problem.

Here is the PCI information:

00:14.0 Network controller: AIRONET Wireless Communications PC4800 (rev 01)
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- 
ParErr- Stepping- SERR+ FastB2B-
        Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Interrupt: pin A routed to IRQ 10
        Region 0: Memory at effffe80 (32-bit, non-prefetchable) [size=128]
        Region 1: I/O ports at d800 [size=128]
        Region 2: I/O ports at d600 [size=64]

no SCSI...
no patches or fixes (except that provided by RedHat)


Regards, and please excuse my english...

 -- 
=========================================================
| Atlantis BG, Ltd.      | Ventsislav Genchev		|
| http://www.atlantis.bg | E-mail: vigour@atlantis.bg	|
=========================================================


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