how can i use wlan0 and p2p0 for p2p operations without new virtual interfaces?

[Stefano Cappa]

> Do you have any reason to believe that the driver you are using supports
> this?
> That would sound like a clear sign of the driver not supporting this..

If i understand correctly the result of "iw list" (valid interface combinations with {P2P-GO,P2P-Client}<=2 ) yes, but practically no!
After that, i tried to debug with printk the broadcom driver in the kernel and i found a strange behaviour connected to mac address assignment and ifindex. Yesterday, i asked directly to a broadcom delevoper and the answer is "simply is not compatibile" :( And this guy said me that the problem is connected to the mac address. Because, if i try to create 2 p2p interfaces, the mac address is the same, also if i try to force wpa_supplicant to use random mac addresses.

Ok, now i'm switching to work with ibss ad hoc network. I can create the interface (ibss) and connect to another device. I can connect to this new network, but i can't ping the device. But this is another problem :) 
And obviously i really hope that it's possibile to use ibss on wlan0 and p2p-p2p0-0 at the same time :)

> only a single P2P group case can use a specific netdev since that same
> netdev is used for both P2P management operations and group. In order to
> use multiple concurrent groups, the only available option is to use a new
> group interface for each group.

Understood, thank you.

Stefano Cappa

PS: sorry for this double e-mail, i forgot that i must reply with address "hostapd" ;)

________________________________________
Da: hostap-bounces at lists.shmoo.com <hostap-bounces at lists.shmoo.com> per conto di Jouni Malinen <j at w1.fi>
Inviato: venerd? 23 gennaio 2015 00.29
A: hostap at lists.shmoo.com
Oggetto: Re: how can i use wlan0 and p2p0 for p2p operations without new        virtual interfaces?

On Wed, Jan 21, 2015 at 03:30:07PM +0000, Stefano Cappa wrote:
> I'm always at the same point, i mean, i want to have an android device with 2 p2p interfaces.

Do you have any reason to believe that the driver you are using supports
this?

> I tried with driver_param=use_p2p_group_interface=1 without success, because i can create only one interface for p2p operations and i really don't understand the reason.

That would sound like a clear sign of the driver not supporting this..

> Suppose that i have limitations about the total number of interfaces that i can create, for example 3. There is a way to use p2p-p2p0-0 and directly p2p0, instead of p2p-p2p0-1? Or p2p-p2p0-0 and wlan0? Or p2p0 and wlan0, directly?
>
> And, if the answer is yes, how can i achieve this with wpa_supplicant + wpa_cli?

Only a single P2P group case can use a specific netdev since that same
netdev is used for both P2P management operations and group. In order to
use multiple concurrent groups, the only available option is to use a new
group interface for each group.

--
Jouni Malinen                                            PGP id EFC895FA
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