[Madwifi-users] Duplicate packets

[Sergey H. <se...@ra...>]

Hello!

We test DLink PCI IEEE802.11g card and Proxim cardbus now.
We use 2 cards for adhoc or hostap-client p2p link.
I know that adhoc don't work now but in second scenario
I see duplicate packets on 2nd side.
Using flood ping (-f key) I see ~50 duplicates on 2500 packets,
in this case we have computers at 2m one from another.
We try to test when on the open air (we need that fro production)
and see only ~1Mbit TCP throughput and ~50% of duplicates

I think that duplicate sent by card (/firmware) because
it don't get ACK in time.
For ~5km outdoor link that time may be rather small to physically 
transfer packet.
This problem appears using both PCI D-Link and Cardbus Proxim cards.


Can we change that ACK timeout some way?
Or maybe completely disable ACK waiting?


-- 
With Best Regards,
Sergey A. Holod
Head Of Network Management Dep.
RadioCom Ltd.
SAH1-RIPE