wifi: mac80211: add NAN channel evacuation support

Browse source

A NAN channel can be evacuated, i.e. detached from its chanctx, if all
chanctxs are used by NAN and a chanctx is needed for something else.
For example if the STA interface needs to perform a channel switch.

Implement the evacuation: detach the NAN channel from its chanctx, remove
all the peer NAN channels that were using this chanctx, and update the
driver.

Internally, the NAN channel evacuation will be triggered in the scenario
described above, and API is provided for the driver to also trigger it.

The driver/device is assumed to publish a ULW to notify the peers about
the fact that we won't be present on this NAN channel anymore.

Also export this as an API for the drivers: if a driver has other
resources per channel, it might want to trigger channel evacuation in
order to free up such internal resources for other usages.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260504101829.1e1dc40d2f3e.I003fe84dc6373bb9ad55abd7824b9fc21c51203f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

...

This commit is contained in:

Miri Korenblit 2026-05-04 10:20:47 +03:00 • committed by Johannes Berg

parent 03c41203ee

commit 42c9de58d9

3 changed files with 162 additions and 7 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

15

include/net/mac80211.h

View file

28

net/mac80211/chan.c

View file

126

net/mac80211/nan.c

View file