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Message-ID: <52A5CDA5.7000601@rempel-privat.de> (sfid-20131209_150334_677343_F06EE8F1)
Date: Mon, 09 Dec 2013 15:03:17 +0100
From: Oleksij Rempel <linux@rempel-privat.de>
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To: David Herrmann <dh.herrmann@gmail.com>,
	linux-wireless <linux-wireless@vger.kernel.org>
Subject: Re: [BUG] P2P setup timeout
References: <CANq1E4R--OowH-LCUX4oSxsJu7yf_2e6Jei8tP+i_BQ_QHiKkw@mail.gmail.com>
In-Reply-To: <CANq1E4R--OowH-LCUX4oSxsJu7yf_2e6Jei8tP+i_BQ_QHiKkw@mail.gmail.com>
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Sender: linux-wireless-owner@vger.kernel.org
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Am 06.12.2013 11:18, schrieb David Herrmann:
> Hi
> 
> I am currently working on user-space helpers for P2P setup as part of
> an Open-Source Miracast implementation (openwfd). I can set up a
> P2P-group with my Android test-device just fine, however, it only
> works if initiated by the GNU/Linux host. Once I initiate the
> p2p-connect from the Android device, it creates a group and sends me a
> p2p-invitation which I am unable to accept.
> 
> I am running wpa_supplicant-git from today (but also tried older
> versions), ath9k-htc from linus-git (3.13-rc2) and the relevant log
> files are appended.
> 
> My wpa-config is:
>   ctrl_interface=/var/run/wpa_supplicant
>   update_config=1
>   p2p_go_ht40=1
> 
> And I do nothing else than open wpa_cli and run:
>   p2p_find
>   p2p_connect <peer> pbc
> 
> This works perfectly well if I don't touch the Android device before
> issuing the p2p_connect. However, if I initiate the first connect on
> the Android device, my linux host gets a p2p-invitation:
>   <3>P2P-INVITATION-RECEIVED sa=12:68:3f:4e:39:f2
> go_dev_addr=12:68:3f:4e:39:f2 bssid=12:68:3f:4e:b9:f2 unknown-network
> 
> I tried accepting this invitation via p2p_connect, but just nothing
> happens. I also tried any combination of arguments
> (auth/join/persistent, pbc/pin/PIN#, playing with go_intent=), didn't
> help..
> 
> Looking at the wpa-log, I see a timeout firing repeatedly:
>   P2P: GO Negotiation Request TX callback: success=1
>   P2P: State CONNECT -> CONNECT
>   P2P: Set timeout (state=CONNECT): 0.500000 sec
>   P2P: Timeout (state=CONNECT)
> Below you can see the whole sequence of wpa-messages that repeat over
> and over again until I cancel the connection-request.
> 
> For WFD I need to initiate the connect from the Android device,
> otherwise their WFD stack won't recognize the connection. So if anyone
> has hints what might be wrong here, I'd gladly try out any patches or
> configurations.
> I cannot test whether this happens with other drivers, too, as I
> couldn't get my hands on a device other than ath9k-htc which supports
> p2p on linux.
> 
> If anyone is interested, I'll be presenting OpenWFD at FOSDEM in the
> graphics-devroom. It would be awesome if I can get my Nexus-4 as a
> working demo until then. Otherwise, it'll be just linux<->linux demos
> (non-android), which is already working fine.

Is it related to your "Atheros AR9280: NULL-deref during P2P setup"
issue? Or it is not reproducible any more?

-- 
Regards,
Oleksij