en:developers:p2p:howto
Differences
This shows you the differences between two versions of the page.
| — |
en:developers:p2p:howto [2015/01/26 09:49] (current) |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| + | |||
| + | |||
| + | ===== P2P howto ===== | ||
| + | |||
| + | |||
| + | ==== prerequisites ==== | ||
| + | |||
| + | In order to test P2P, you need: | ||
| + | * a current wireless-testing kernel (or compat-wireless equivalent) or kernel 3.0 later | ||
| + | * wpa_supplicant from the [[http://hostap.epitest.fi/gitweb/gitweb.cgi?p=hostap.git;a=summary|hostap]] git tree: | ||
| + | <code>git clone git://w1.fi/srv/git/hostap.git</code>, or possibly from the hostap-1 stabilisation tree | ||
| + | * an Atheros ath9k device | ||
| + | * OR an ar9170 USB device (with carl9170 driver!) | ||
| + | * (OR another device that has a mac80211 driver, but these are known to work, iwlwifi does **not** currently work with any released microcode) | ||
| + | |||
| + | |||
| + | === wpa_supplicant === | ||
| + | |||
| + | Use this config file for compiling: | ||
| + | <code>CONFIG_DRIVER_NL80211=y | ||
| + | # optional, depending on libnl version you want to use: | ||
| + | # CONFIG_LIBNL20=y | ||
| + | |||
| + | CONFIG_CTRL_IFACE=y | ||
| + | CONFIG_WPS=y | ||
| + | CONFIG_WPS2=y | ||
| + | CONFIG_P2P=y | ||
| + | CONFIG_AP=y | ||
| + | |||
| + | # and maybe DBus</code> | ||
| + | |||
| + | ==== running ==== | ||
| + | |||
| + | Start wpa_supplicant with this config file: | ||
| + | <code>ctrl_interface=/var/run/wpa_supplicant | ||
| + | ap_scan=1 | ||
| + | |||
| + | device_name=my-device-name | ||
| + | device_type=1-0050F204-1 | ||
| + | |||
| + | # If you need to modify the group owner intent, 0-15, the higher | ||
| + | # number indicates preference to become the GO. You can also set | ||
| + | # this on p2p_connect commands. | ||
| + | #p2p_go_intent=15 | ||
| + | |||
| + | # optional, can be useful for monitoring, forces | ||
| + | # wpa_supplicant to use only channel 1 rather than | ||
| + | # 1, 6 and 11: | ||
| + | #p2p_listen_reg_class=81 | ||
| + | #p2p_listen_channel=1 | ||
| + | #p2p_oper_reg_class=81 | ||
| + | #p2p_oper_channel=1</code> | ||
| + | like this: | ||
| + | <code>./wpa_supplicant -Dnl80211 -c /path/to/p2p.conf -i wlan0 -dt</code> | ||
| + | Then start <code>./wpa_cli</code> and use the various <code>p2p_*</code> commands, for example: | ||
| + | <code>p2p_find | ||
| + | [wait for peer to be found] | ||
| + | p2p_connect <peer-mac-addr> pbc go_intent=<0..15></code> | ||
| + | (or you can use pin of course, go_intent is optional.) | ||
| + | |||
| + | |||
| + | ==== using multiple virtual interfaces for concurrent usage ==== | ||
| + | |||
| + | If the driver advertises support, wpa_supplicant will automatically create secondary P2P interfaces. To force this without the driver advertising support, you can add the following to the config file: | ||
| + | <code>driver_param=use_p2p_group_interface=1</code> | ||
| + | When this is added, start the supplicant normally on wlan0 like above. Then, when P2P negotiation finishes, it will create a new interface for the group (called "p2p-wlan0-0") and put it into the appropriate mode (GO or P2P client). | ||
en/developers/p2p/howto.txt ยท Last modified: 2015/01/26 09:49 (external edit)
Page Tools
