[Madwifi-users] Briding problem with two wifi cards in one device

[sxn <ml...@sa...>]

Hi,

i currently testing the briding stuff. At first i give you a overview
about the setup

Hardware overview:
client1
----[Ethernet]---->Node1----[Wlan]---->Node2-----[Wlan]---->client2

Software overview:
Node1-Hostapd(ath0)-->Node2-Wpa_supp(ath0) |
Hostapd(ath1)---->Client2-wpa_supp

All nodes and clients got the latest svn and 2.6.* Kernel. Bridge-utils
1.1 are used.
On all devices hostapd and wpa_supplicant are running the version 5.4.
Wpa_supplicant and hostapd are compiled with the same madwifi headers
which the driver is running on the systems.

Node1 setup:
ath0 + eth0 are in a bridge called br0
Hostapd is running with the bridge option (bridge=br0) and the interface
for hostapd is ath0. Its no problem to connect from client on to node1.

Node2 setup
ath0 + ath1 + eth0 are in abridge called br0
Hostapd is running with the bridge option (bridge=br0) and the interface
for hostapd is ath0. Wpa_supplicant is runnung with the options:
"wpa_supplicant -D madwifi -b br0 -c /etc/wpa_supplicant.conf -i ath0
-B". Its no problem to ping,iperf, and do tcp stuff from node2 to
client1 - that really works good over a long time.

The Problem:
When client 2 connects to node2 over WPA or WEP - it works for a view
seconds - i can ping client1 - then it stops. When it stops i got the
following debug output on node2:

br0: port 2(ath0) entering disabled state
br0: port 2(ath0) entering learning state
br0: port 2(ath0) entering disabled state
br0: port 2(ath0) entering learning state
br0: port 2(ath0) entering disabled state
br0: port 2(ath0) entering learning state
br0: port 2(ath0) entering disabled state

That messages are repeating all over the time. 
So at the same second when for example a ping stops - the first message
on node2 comes out.

I tested it with wep and with wpa its no difference so i dont think that
that hostapd is the problem.

I have turned on ip_forwarding and iwpriv athX wds 1 on - also i run
iwpriv ath0 bgscan 0. Im building the bridge with this options: 

rmmod ath_pci
wlanconfig ath0 create wlandev wifi0 wlanmode sta
iwconfig ath0 essid test
iwpriv ath0 wds 1
iwconfig ath0 channel 10
ifconfig ath0 up

wlanconfig ath1 create wlandev wifi1 wlanmode ap
iwconfig ath1 essid aptest
iwpriv ath1 wds 1
iwconfig ath1 channel 1
#iwconfig ath1 key s:KEY
ifconfig ath1 up

brctl addbr br0
brctl addif br0 eth0
brctl addif br0 ath0
brctl addif br0 ath1

ifconfig br0 inet 192.168.1.33
ifconfig br0 up
echo 1  > /proc/sys/net/ipv4/ip_forward
route add default gw 192.168.1.5
hostapd /etc/hostapd/hostapd.conf -B
wpa_supplicant -D madwifi -b br0 -c /etc/wpa_supplicant.conf -i ath0 -B


Does anybody got a idea what the problem is?

Regards,

Steffen