virtual p2p interface creation for android UI

ankurrahi1 — Tue, 01 Dec 2015 10:08:37 GMT

Hi all,

I'm using Ralink WiFi chip fr Wifi bringup. The respective driver support to create "waln0" interface and not virtual interface "p2p0" interface and when i enable Wifi from Android UI, it fails to communicate detect p2p0 interface.

root@sabresd_6dq:/ # netcfg

lo	UP	127.0.0.1/8 0x00000049 00:00:00:00:00:00
eth0	UP	0.0.0.0/0 0x00001043 00:04:9f:02:cd:dd
wlan0	DOWN	0.0.0.0/0 0x00001002 7c:dd:90:85:c8:29

I created the virtual p2p0 interface with command-

iw wlan0 interface add p2p0 type managed

root@sabresd_6dq:/ # netcfg
lo	UP	127.0.0.1/8 0x00000049 00:00:00:00:00:00
eth0	UP	0.0.0.0/0 0x00001043 00:04:9f:02:cd:dd
p2p0	DOWN	0.0.0.0/0 0x00001002 7c:dd:90:85:c8:29
wlan0	DOWN	0.0.0.0/0 0x00001002 7c:dd:90:85:c8:29

Both p2p0 and wlan0 share same MAC address, but it fails to start p2p0

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E/wpa_supplicant( 3201): nl80211: Register frame match - hexdump(len=2): 0a 07

E/wpa_supplicant( 3201): Could not set interface p2p0 flags (UP): Name not unique on network

E/wpa_supplicant( 3201): nl80211: Could not set interface 'p2p0' UP

E/wpa_supplicant( 3201): nl80211: Set mode ifindex 8 iftype 2 (STATION)

E/wpa_supplicant( 3201): nl80211: Unsubscribe mgmt frames handle 0x41a470e0 (mode change)

E/wpa_supplicant( 3201): p2p0: Failed to initialize driver interface

E/wpa_supplicant( 3201): Failed to add interface p2p0

E/wpa_supplicant( 3201): p2p0: Cancelling authentication timeout

I/wpa_supplicant( 3201): wpa_driver_set_ap_wps_p2p_ie: Entry

E/wpa_supplicant( 3201): wlan0: Removing interface wlan0

E/wpa_supplicant( 3201): wlan0: No keys have been configured - skip key clearing

E/wpa_supplicant( 3201): wlan0: State: DISCONNECTED -> DISCONNECTED

E/wpa_supplicant( 3201): wpa_driver_nl80211_set_operstate: operstate 0->0 (DORMANT)

E/wpa_supplicant( 3201): wlan0: No keys have been configured - skip key clearing

E/wpa_supplicant( 3201): wlan0: Cancelling authentication timeout

E/wpa_supplicant( 3201): nl80211: Set mode ifindex 7 iftype 2 (STATION)

E/wpa_supplicant( 3201): nl80211: Unsubscribe mgmt frames handle 0x41a37f28 (mode change)

I/wpa_supplicant( 3201): wlan0: CTRL-EVENT-TERMINATING

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I modified the MAC address with-

ip link set dev p2p0 address 00:dd:90:85:c8:29

p2p0	DOWN	0.0.0.0/0 0x00001002 00:dd:90:85:c8:29
wlan0	DOWN	0.0.0.0/0 0x00001002 7c:dd:90:85:c8:29

even though it is not connecting

--------------------------------------------------------------------------------------

D/wpa_supplicant( 2839): wpa_supplicant v2.1-devel-4.4.2

D/wpa_supplicant( 2839): random: Trying to read entropy from /dev/random

I/wpa_supplicant( 2839): Successfully initialized wpa_supplicant

D/wpa_supplicant( 2839): Initializing interface 'wlan0' conf '/data/misc/wifi/wpa_supplicant.conf' driver 'nl80211' ctrl_interface 'N/A' bridge ''

D/wpa_supplicant( 2839): Configuration file '/data/misc/wifi/wpa_supplicant.conf' -> '/data/misc/wifi/wpa_supplicant.conf'

D/wpa_supplicant( 2839): Reading configuration file '/data/misc/wifi/wpa_supplicant.conf'

D/wpa_supplicant( 2839): update_config=1

D/wpa_supplicant( 2839): ctrl_interface='wlan0'

D/wpa_supplicant( 2839): eapol_version=1

D/wpa_supplicant( 2839): ap_scan=1

D/wpa_supplicant( 2839): fast_reauth=1

D/wpa_supplicant( 2839): config_methods='virtual_push_button physical_display keypad'

D/wpa_supplicant( 2839): persistent_reconnect=1

I/wpa_supplicant( 2839): rfkill: Cannot open RFKILL control device

D/wpa_supplicant( 2839): nl80211: RFKILL status not available

D/wpa_supplicant( 2839): netlink: Operstate: linkmode=0, operstate=6

E/wpa_supplicant( 2839): Could not read interface wlan0 flags: No such device

D/wpa_supplicant( 2839): nl80211: Set mode ifindex 0 iftype 2 (STATION)

D/wpa_supplicant( 2839): nl80211: Failed to set interface 0 to mode 2: -19 (No such device)

E/wpa_supplicant( 2839): wlan0: Failed to initialize driver interface

D/wpa_supplicant( 2839): Failed to add interface wlan0

D/wpa_supplicant( 2839): wlan0: Cancelling scan request

D/wpa_supplicant( 2839): wlan0: P2P: Station mode scan operation not pending anymore (sta_scan_pending=0 p2p_cb_on_scan_complete=0)

D/wpa_supplicant( 2839): wlan0: Cancelling authentication timeout

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I am not able to find p2p0 interface in /data/system/wpa_supplicant/wlan0 p2p0

Appreciate any help.

Thanks

Ankur Rahi

Re: virtual p2p interface creation for android UI

b36401 — Wed, 09 Dec 2015 08:00:07 GMT

Here is a common documentation regarding to p2p connection:

http://developer.android.com/training/connect-devices-wirelessly/wifi-direct.html

Have a great day,

Victor

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