current CVS hostap problem with management frames (0.0.3 OK)

Jouni Malinen jkmaline
Tue Sep 30 18:45:48 PDT 2003

On Tue, Sep 30, 2003 at 05:08:33PM +0100, Petr Novak wrote:

> I have a nasty problem causing suddenly stations not to associate, it works 
> fine with 0.0.3 but not with the CVS version from early September. The MASTER 
> answers are not ACKed by the stations in the recent versions of hostap. Any 
> idea or help is appreciated. 

I do not remember any changes that should cause something like this, but
then again, quite a lot has changed since 0.0.3.. Anyway change of you
being able to narrow this to a bit shorter time period? For example,
does this work with v0.0.4?

> Analyzing the logs identified the problem to 
> be that the AP receives authentication requests from stations and tries to 
> answer them, but these packets are never delivered and are returned back 
> through TxExc event with the Retry limit bit on.

Would you be able to use a wireless sniffer to capture some of the
authentication attempts? I would be interested in finding out whether
the authentication frames are being sent out correctly from the AP and
how much time is used between the authentication frame from the STA and
the reply from the AP. Many client cards seemed to not ACK
authentication frames if they came "too late" (however that is defined;
Wi-Fi certification seems to allow up to 100 ms delay).

What kind of client cards are you using? Is any of them able to
associate with the AP when using a CVS version of the Host AP driver?

Jouni Malinen                                            PGP id EFC895FA

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