[PATCH 00/20] wpa_s: p2p: support nl80211 P2P_DEVICE interface

Jouni Malinen j at w1.fi
Tue May 21 08:02:58 EDT 2013


On Tue, May 21, 2013 at 01:53:38PM +0200, Arend van Spriel wrote:
> On 05/19/2013 09:08 PM, Jouni Malinen wrote:
> >Thanks. I started applying commits, but had to stop with that pretty
> >quickly since this broke number of things in my tests (including hostapd
> >build and wpa_supplicant start).. I think I managed to fix most of the
> >issues, but this still does not work in my hwsim tests.
> 
> Can you elaborate what does not work in you hwsim tests. I tested
> with your devel branch and I can connect and ping. However, I am
> using 3.10-rc1 on the peer using P2P Device interface. Reason for
> this is that it needs a nl80211 patch to make P2P_FIND succeed.

I did not see device discovery working. hwsim0 shows Probe Request
frames, but there was no reporting if Probe Request frames to
wpa_supplicant and as such, no responses to these.

>   commit 97990a060e6757f48b931a3946b17c1c4362c3fb
>   Author: Johannes Berg <johannes.berg at intel.com>
>   Date:   Fri Apr 19 01:02:55 2013 +0200
> 
>       nl80211: allow using wdev identifiers to get scan results

I'd assume I had that in my tests. I was using a wireless-testing.git
snapshot. Anyway, whether I had that there or not does not matter since
there is obviously at least one snapshot of the kernel where this breaks
P2P completely at least for hwsim tests. I cannot apply such changes
into hostap.git without protection that avoids regressions with any past
kernel snapshot in the default configuration. It would be unfortunate if
we have managed to push kernel changes in to claim support for this
without it actually working. That would mean that there may be need for
manual configuration to enable this in wpa_supplicant and/or a new
capability bit in the kernel once things start working.

> Another thing is that for P2P Device I use the same configuration
> file, but that starts scanning on P2P Device for the networks
> configured in it. So I patched wpa_supplicant_enabled_networks() to
> return 0 if wpa_s->p2p_mgmt is 1.

Hmm.. I don't think this would explain the issues I saw.

-- 
Jouni Malinen                                            PGP id EFC895FA


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