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Re: [PATCHv2 2/5] nl80211/cfg80211: add channel switch command

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On Tue, 2013-06-18 at 17:18 +0200, Simon Wunderlich wrote:
> On Tue, Jun 18, 2013 at 04:50:30PM +0200, Johannes Berg wrote:
> > 
> > > + * @NL80211_CMD_CHANNEL_SWITCH: Perform a channel switch by announcing the
> > > + *	the new channel information (Channel Switch Announcement - CSA)
> > > + *	in the beacon for some time (as defined in the
> > > + *	%NL80211_ATTR_CH_SWITCH_COUNT parameter) and then change to the
> > > + *	new channel. Userspace provides the new channel information (using
> > > + *	%NL80211_ATTR_WIPHY_FREQ and the attributes determining channel
> > > + *	width). %NL80211_ATTR_CH_SWITCH_BLOCK_TX may be supplied to inform
> > > + *	other station that transmission must be blocked until the channel
> > > + *	switch is complete.
> > 
> > We probably need a flag to indicate that the command is available, since
> > mac80211 might implement it but not all drivers will?
> 
> Yeah ... shall we announce it as CMD() in nl80211_send_wiphy()? Or feature
> flag?

CMD() works (make sure to only put it if split), but need a wiphy flag
since mac80211 always implements it, I think.

johannes

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