Wifi direct - Ping not succesful - (AM335x + WL18xx + linux)

Hi Johncy,

The IP Address should be assigned to the "p2p-p2p0-0" interface.

Regards,
Gigi Joseph.

Hi Joseph,

Thanks for the response. I tried giving ifconfig p2p-p2p-0 192.168.3.4 But it complained error: SIOCSIFADDR (operation not permitted).

On giving netcfg command information related to my MAC accdress showed as,

wlan0 up 10.1.167.179/24

p2p0 UP 0.0.0.0

p2p-wlan0-0 UP 192.168.49.1/24

Thanks,

Johncy.

Hi Johncy,

Which release are you using? You don't seem to have the p2p-p2p0-0 interface. The interface created for you seems to be "p2p-wlan0-0".

Are you entering the wpa_cli using the p2p0 interface ("wpa_cli -ip2p0")?

Regards,
Gigi Joseph.

Hi.

I am having android 4.4.2 in my device.

In the tablet I am not running wpa_cli but using the wifi-direct feature in Connections menu. I give p2p_connect with the mac address of the android device from the EVM board in PBC mode. Then a pop up is dispalyed in my tablet to connect. Once I connect, the connection is succesful. But after that how to assign ip address to the tablet is not known still.

Regards,

Johncy.

Hi Johncy,

Please confirm if you are starting the DHCP Server in the EVM board.

root@am335x-evm:~# echo 1 > /proc/sys/net/ipv4/ip_forward
root@am335x-evm:~# ifconfig p2p-p2p0-0 192.168.0.1
root@am335x-evm:~# udhcpd /etc/udhcpd.conf

Regards,
Gigi Joseph.

Hi Gigi,

I tried in both ways of assigning the ip address as static and using DHCP.

Steps I followed for static ip configuration is:

In EVM #1,

1) Created the p2p0 interface using the below command:
iw phy `ls /sys/class/ieee80211/` interface add p2p0 type managed

2) Changed /etc/p2p_supplicant.conf as below

ctrl_interface=/var/run/wpa_supplicant
update_config=0
device_name=TI-SITARA-P2P
device_type=1-0050F204-1
config_methods=virtual_push_button physical_display keypad
p2p_go_intent=0
country=US
driver_param=use_multi_chan_concurrent=1 use_p2p_group_interface=1
p2p_go_max_inactivity=60
p2p_go_ht40=1
p2p_multi_chan=1
disassoc_low_ack=1
concurrent_sched_scan=1

3) Ran the wpa_supplicant as below:
wpa_supplicant -iwlan0 -Dnl80211 -c/etc/wpa_supplicant.conf -N -ip2p0 -Dnl80211 -c/etc/p2p_supplicant.conf &

4) Sent    wpa_cli -ip2p0
     a) p2p_find
     b) p2p_peers
     c) p2p_connect <MAC address of Android tablet> pbc freq=2412
     d) q to quit the interactive mode

5) At step 4c, a popup is displayed on the android tablet asking to connect. Gave connect and in a while 
tablet shows connected and EVM #1 shows connect success in the putty terminal.

6) Set ip address in EVM #1 as below, 
ifconfig p2p-p2p0-0 192.168.3.3 

7)  In android tablet I can find only p2p0/p2p-wlan0-0 is shown. So couldn't set the IP address for p2p-p2p0-0 interface 
in tablet.


Steps I followed for DHCP is:

In EVM #1,

1) Created the p2p0 interface using the below command:
iw phy `ls /sys/class/ieee80211/` interface add p2p0 type managed

2) Changed /etc/p2p_supplicant.conf as below

ctrl_interface=/var/run/wpa_supplicant
update_config=0
device_name=TI-SITARA-P2P
device_type=1-0050F204-1
config_methods=virtual_push_button physical_display keypad
p2p_go_intent=0
country=US
driver_param=use_multi_chan_concurrent=1 use_p2p_group_interface=1
p2p_go_max_inactivity=60
p2p_go_ht40=1
p2p_multi_chan=1
disassoc_low_ack=1
concurrent_sched_scan=1

3) Ran the wpa_supplicant as below:
wpa_supplicant -iwlan0 -Dnl80211 -c/etc/wpa_supplicant.conf -N -ip2p0 -Dnl80211 -c/etc/p2p_supplicant.conf &

4) Sent    wpa_cli -ip2p0
     a) p2p_find
     b) p2p_peers
     c) p2p_connect <MAC address of Android tablet> pbc freq=2412
     d) q to quit the interactive mode

5) At step 4c, a popup is displayed on the android tablet asking to connect. Gave connect and in a while 
tablet shows connected and EVM #1 shows connect success in the putty terminal.

6) In EVM #1, Changed udhcpd.conf as 

# Sample udhcpd configuration file (/etc/udhcpd.conf)
# The start and end of the IP lease block
start 		192.168.0.20	#default: 192.168.0.20
end		192.168.0.254	#default: 192.168.0.254
# The interface that udhcpd will use
interface   p2p-p2p0-0		#default: eth0
#Examles
opt	dns	8.8.8.8  8.8.4.4 # public google dns servers
option	subnet	255.255.255.0
opt	router	192.168.0.1
option	lease	864000		# 10 days of

7) Sent the below commands in EVM #1,

echo 1 > /proc/sys/net/ipv4/ip_forward

ifconfig p2p-p2p0-0 192.168.0.1

udhcpd /etc/udhcpd.conf

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

8) In android tablet I couldnt run the udhcpc -i p2p-p2p0-0

Thanks,
Johncy.

Hi Johncy,

The DHCP Client should already be running on the Android tablet - so you wouldn't need to set the IP address specifically to the android tablets 'p2p-wlan0-0' interface.
Which IP address are you trying to ping? Based on your configuration, the ip address of the tablet should be "192.168.0.20"

Regards,
Gigi Joseph.

Hi Johncy,

Thanks for the update.
Please let me know if I can close this thread.

Regards,
Gigi Joseph.

Yes please close the thread.