How to read WiFi radio frequency.

How to read WiFi radio frequency.

[KATSUMI masanori]

I am trying to make p2p software with the current device as the group
owner.
I would like to acquire the channel that GO started, from normal user(NOT
root).
How can I get this information?

Re: How to read WiFi radio frequency.

[KATSUMI masanori]

On Thu, 25 Jul 2013 21:02:51 +0900
KATSUMI masanori <masanori-katsumi@elwsc.co.jp> wrote:

> I am trying to make p2p software with the current device as the group
> owner.
> I would like to acquire the channel that GO started, from normal user(NOT
> root).
> How can I get this information?

I think I can get own GO operating channel or freq through NL80211_ATTR_WIPHY_FREQ attribute
in nl80211 interface.

However, I was not able to get this attribute by NL80211_CMD_GET_INTERFACE which is used in
iw command.
In addition to that, I tried several nl80211 commands but I couldn't get it.
e.g) 
   NL80211_CMD_GET_WIPHY
   NL80211_CMD_GET_INTERFACE
   NL80211_CMD_GET_SCAN
   NL80211_CMD_GET_SURVEY
   NL80211_CMD_REMAIN_ON_CHANNEL

I can get the operating freq during STA but I cannot find the way to
get the own operating freq during running GO.

BTW, NL80211_CMD_FRAME_TX_STATUS event is only notified when GO started.
But, even this event didn't contain the frequency information.

Is there any other way to get the own GO's operating channel ??

I tried kernel v3.0.31
And do you know this feature supports in the latest kernel ??

Regards,