ndisuio dosn't receive packets

Jouni Malinen j
Sat Mar 8 00:16:48 PST 2008

On Wed, Mar 05, 2008 at 08:12:28AM +0100, Thomas Unterleitner wrote:

> The Problem is, that we dosn't receive inside wpa_supplicant the second
> packet (EAP,Request, Identity [FSC3748]). We sniff the network traffic and
> we see, that the switch send this packet. But wpa_supplicant timed out after
> a while with (Authentication with xx:xx:xx:... timed out.). It looks like we
> can only send EAPOL Start via ndisuio.

NDISUIO is limited to just a single application using the
receive-EAPOL-frames functionality. If something else on the system is
trying to do the same, wpa_supplicant won't be able to use NDISUIO for
this. However, I would expect this to cause initialization to fail.

Do you have any particular reason for using NDISUIO or would use of
WinPcap be suitable for this system? WinPcap provides a more generic
mechanism for receiving EAPOL frames and does not have this type of
limitation on how many applications can use it at the same time.

Jouni Malinen                                            PGP id EFC895FA

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