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Re: [PATCH v2 1/4] nl80211: Parse channel type attribute in an IBSS join request

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On Wed, 2011-08-31 at 15:49 +0200, Alexander Simon wrote:
> > Use for what? That's confusing. You're asking if it can be used for
> > beaconing, as the old function name *clearly* said. Now you're making it
> > confusing.
> I'm not only asking for beaconing. In 4/4, i am using this function to see if 
> regdom allows me to use HT40 on the extension channel (beacons and data 
> traffic). Hence can_use_ext_chan.
> 
> Even cfg80211_set_freq in net/wireless/chan.c uses this to see if we can 
> communicate (see printk) on that channel.
> 
> So my suggestion would be to use that name. But I'd also use the old if 
> preferred.

But the type of usage should be made clear. You're going to use it for
uncontrolled transmissions, so regulatory rules that apply are different
than "can I use this channel to connect to an AP" for example. The "can
beacon" made that obvious. Obviously, if I can beacon, I can also TX
data, but vice versa isn't necessarily true depending on regulatory
rules, since data TX can happen controlled by the AP (e.g. DFS
channels).

johannes

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