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wifi: cfg80211: add NL80211_CMD_NAN_SET_NON_EVAC_CHANNELS

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Add a new NL80211_CMD_NAN_SET_NON_EVAC_CHANNELS command that lets user
space mark a set of NAN channels as non-evacuable. The command carries
the channels as nested NL80211_ATTR_NAN_CHANNEL attributes (chandef
only) and replaces the entire set of non-evacuable channels; channels
not included in the list become evacuable again.

All provided channels must already exist in the current local schedule,
otherwise -ENOENT is returned. The command is rejected with -EBUSY
while a schedule update is pending.

This prevents the kernel from evacuating channels that carry NDC or
immutable schedules, so evacuating these channels would break existing
NDP connections.

Fixes: 154b0296c0 ("wifi: nl80211: Add a notification to notify NAN channel evacuation")
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260921215936.2efc32011e73.Ice8839058e114f6f9783079807df446388187dda@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Andrei Otcheretianski 2026-09-21 22:00:22 +03:00 • committed by Johannes Berg
commit 025ef5f4f6
7 changed files with 205 additions and 0 deletions
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