Re: [PATCH] mac80211: While associated, force off channel transmission for action frames

[Johannes Berg <johannes@sipsolutions.net>]

On Mon, 2015-04-20 at 22:54 +0300, Emmanuel Grumbach wrote:
> From: Matti Gottlieb <matti.gottlieb@intel.com>
> 
> Currently while associated to an AP and sending an action frame to a
> different AP on the same channel, the action frame will be sent
> like a regular tx frame without going off channel.
> 
> When power save is enabled this can cause problems, since the device can
> go into power save and miss the response to the action frame that is sent
> by the other AP.
> 
> By forcing the frame to be transmitted off channel we avoid this issue.
> 
> Force the transmitting of the action frame to use off channel in
> case of association
> - If HW off channel is enabled
> - The user did not forbid transmitting frames off channel
> - The frame is not designated to the AP that we are associated with

Makes sense, but I reworded the commit message a bit.

If this problem crops up on non-hw-offchannel devices we should prevent
powersave there for the transition period.

johannes