Re: [PATCH] cfg80211/nl80211: add wifi tx power mode switching support

On Thu, 2016-05-05 at 14:44 +0800, Wei-Ning Huang wrote:

Recent new hardware has the ability to switch between tablet mode and
clamshell mode. To optimize WiFi performance, we want to be able to
use different power table between modes. This patch adds a new
netlink message type and cfg80211_ops function to allow userspace to
trigger a power mode switch for a given wireless interface.

I'm not a fan of this at all. Too much magic.

FWIW, we implemented something similar, currently with vendor commands,
that simply allows to set the TX power in a more controlled fashion,
i.e. allows setting TX power per band/channel range. For our device
it's only 2.4 GHz vs. 5.2 GHz, but I can imagine that you might want to
split it a bit further, so perhaps we need to advertise those ranges
somehow.

johannes
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