[Voyage-linux] WRAP freezing problem

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Dear voyage users,

My goal is to make a point to point link using two WRAPs with two CM9 each. I
have ran several tests using only one or the two CM9 (using equal cost
multipath routing) in order to acheive this goal.

When transferring data with highest possible speed (around 30Mbps for one
atheros link), using different TCP protocols (netperf TCP_STREAM test, samba
transfers, ftp transfers), after a while (from 20minutes to 30secs) the WRAP
simply freezes, without giving any kind of information (I tried to point the
/var/log directory towards the flash to get information after a reboot,
connecting a serial console to watch for kernel panic messages, but no
information is shown). I first thought of a madwifi or linux kernel interrupt
problem, but given the fact that right after a reboot (manual or watchdog),
running the same test made it freeze more rapidly, I then thought of a hardware
problem (temperature or so). More tests later and after prooving that it was not
a temperature problem, I still ask myself whether it's hardware or software,
madwifi or kernel.

The problem was repeated with two distinct versions of voyage (0.1 and 0.1sarge
special edition!), different kernels with different configurations
(voyage-2.6.9, voyage-2.6.11, vanilla-2.6.12), and lots of different madwifi
versions...

To repeat the problem, two WRAPs with two CM9 each are required, a basic voyage
installation and a few routing steps to pass traffic from LAN to one or both of
the wireless cards (similar to: ip route add 192.168.10.0/24 via 10.0.0.2 dev
ath0, or: ip route add 192.168.10.0/24 nexthop via 10.0.0.2 dev ath0 nexthop
via 10.0.1.2 dev ath1), multiple instances of netperf running to simulate a few
TCP sessions.

I would just like to know if it happened to someone, if it's specific to voyage
(soon i will try with a gentoo-hardened to get this answer), or if it seems to
be hardware, software,...?

Thanks for any kind of help!

Francois.

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