Re: IBSS channel support

[Johannes Berg <johannes@sipsolutions.net>]

On Fri, 2011-07-29 at 17:27 +0200, p4u wrote:
> Hi,
> This is my first mail to this list, I'm Pau from Barcelona working in 
> guifi.net (wireless community)
> First of all I want to say thank you guys for your amazing job :-)
> 
> Now, I have a little question. Using command "iw phy phy0 info" I can 
> see that IBSS mode is only avaiable in some channels for 5ghz spectrum. 
> I have been looking for information about it, but I cannot find from 
> what depends if some channel can by used in IBSS mode or not. So I think 
> it depends on the driver and on the regdomain, is it right?
> 
> Also I'm working in some scripts, and I need to know if a channel has 
> IBSS support or not. The only way I found is with iw command, but pharse 
> this data is very dirty. Furthermore I can read in the end of iw help:
> 
> "Do NOT screenscrape this tool, we don't consider its output stable."
> 
> So I need another way to get this information. Any idea?

Copy bits of the wpa_supplicant or iw code into your code to get this
information. That said, iw output _should_ be fairly stable, in this
area.

johannes