mac80211 and broadcast frames

[Valentin Manea <linux-wireless@mrs.ro>]

Hi,

    I've been working on a small project that basically sends broadcast 
UDP frames from an Wireless AP to multiple clients. While I can send UDP 
frames just fine from the AP to the client the only a few broadcast 
frames reach my client. What is really puzzling is that on the client 
machine using tcpdump I can see all the broadcast frames arriving, my 
application sees only a small fraction of them.

* I have suspected some bug in the application, but the same app using 
the same computers works fine when using wired ethernet.
* I have used both 2.6.30 and the latest wireless-testing kernels, the 
results are the same
* I have used the latest hostapd in AP mode
* I did the same tests in ad-hoc mode, the results are the same
* I used both atheros and intel wireless cards, the problem is not 
related to the wireless drivers.

Any ideea what I'm doing wrong?


Thanks,
Valentin