p2p_group_add failed to initialize group interface

Chao Xu caesarxuchao at gmail.com
Mon Nov 19 20:20:45 EST 2012


Thanks. It worked after I disabled the use of a separate group interface.

On Mon, Nov 19, 2012 at 4:03 AM, Jouni Malinen <j at w1.fi> wrote:

> On Sun, Nov 18, 2012 at 08:08:20PM -0600, Chao Xu wrote:
> > I'm running the latest wpa_supplicant. My wireless adapter uses ar9170
> > chipset. I installed the carl9170 driver. When I tried the p2p_gorup_add,
> > the wpa_cli returned this:
> > p2p_group_add
> > FAIL
> > <5>P2P: Failed to initialize group interface
>
> It looks like the driver rejected this configuration for some reason. I
> have not tested P2P with carl9170, so I don't know what to expect from
> that.
>
> > nl80211: Create interface iftype 9 (P2P_GO)
> > nl80211: New interface p2p-wlan0-0 created: ifindex=10
> > nl80211: Allocate new address for P2P group interface
> > nl80211: Assigned new P2P Interface Address 02:1f:33:f8:0f:23
> > P2P: Created pending virtual interface p2p-wlan0-0 addr 02:1f:33:f8:0f:23
>
> > Could not set interface p2p-wlan0-0 flags (UP): Device or resource busy
> > nl80211: Could not set interface 'p2p-wlan0-0' UP
>
> > What's the possible reason that prevents the setup of the interface
> > p2p-wlan0-0? I turned off the network-manager when I run wpa_supplicant
> to
> > prevent any interference. Thank you!
>
> Do you need support for concurrent operations (station + P2P interface
> at the same time)? If not, you could test what happens if you disable
> use of a separate group interface by adding this to wpa_supplicant
> configuration file:
> p2p_no_group_iface=1
>
> --
> Jouni Malinen                                            PGP id EFC895FA
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>



-- 
Regards,
Chao Xu
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