On 06/30/2009 07:20 PM, Luis R. Rodriguez wrote:
On Tue, Jun 30, 2009 at 3:53 AM, Valentin Manea<linux-wireless@xxxxxx> 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.
Keep in mind when you use tcpdump it will modify the RX filters of the
device you use but if you say you see them on tcpdump and at the same
time do not see them on the application that seems fishy and non
driver related.
Luis
tcpdump doesn't affect the results at all, with or without it running
it's the same.
I have tried tracing the packets, I thought that maybe there is a
problem in the 80211 stack and for some reason they would be dropped but
as far as I can tell every packet is routed to the ip stack with the
correct protocol and pkt_type.
One more strange thing, if I'm looking at netstat -s everything seems to
be normal, InBcastPkts is fine, also the number of incomming UDP packets.
Any ideas where I could look? it just gets stranger and stranger.
Thanks,
Valentin
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