On 19/01/2023 15:02, Johannes Berg wrote:
On Mon, 2022-12-26 at 14:03 +0530, Rameshkumar Sundaram wrote:
As per 802.11ax-2021, STAs shall process BSS Color Change Announcement
(BCCA) from AP and switch to new color, but some STAs aren't processing
BCCA from AP and not doing color switch, causing them to drop data
frames from AP post color change.
Provide an option to disable color collision detection and therefore
not to do BCCA to mitigate the same from AP. If it's required in case
where STA supports BCCA handling, then it can enabled in AP using this
option.
You should probably split this into cfg80211 and mac80211.
Also, this doesn't really seem to make a lot of _sense_ since nothing in
the kernel actually acts on detection of a color collision - hostapd is
acting on that.
So since you can easily make hostapd ignore the event, why do you even
need this?
This may not be related, but the software color collision detection
sends a netlink message for every colliding frame and it can hose up the
system if the other network is very active.
Also, cfg80211_bss_color_notify() complains that the wdev lock isn't held.
