Re: mac80211 and broadcast frames

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

Hello Again,

    I have been studying the network statistics for this problem and 
they don't really make sense to me, if I bombard the wireless device 
with broadcast packets *RX packets* in ifconfig increases very fast but 
*RX bytes* does not. However when I'm doing the same thing over the 
wired device both of them increase very fast.
    This doesn't really make sense to me, I don't understand where those 
packets are going exactly.

Thanks,
Valentin

On 06/30/2009 01:53 PM, Valentin Manea wrote:
> 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
>
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