Commit cb55e08d authored by Johannes Berg's avatar Johannes Berg
Browse files

wifi: mac80211: remove link before AP 



If the AP removal timer is long, we don't really want to
remove the link immediately. However, we really should do
it _before_ the AP removes it (which happens at or after
count reaches 0), so subtract 1 from the countdown when
scheduling the timer. This causes the link removal work
to run just after the beacon with value 1 is received. If
the counter is already zero, do it immediately.

This fixes an issue where we do the removal too late and
receive a beacon from the AP that's no longer associated
with the MLD, but thus removed EHT and ML elements, and
then we disconnect instead from the whole MLD, since one
of the associated APs changed mode from EHT to HE.

Fixes: 8eb8dd2f ("wifi: mac80211: Support link removal using Reconfiguration ML element")
Reviewed-by: default avatarIlan Peer <ilan.peer@intel.com>
Reviewed-by: default avatarMiriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240418105220.03ac4a09fa74.Ifb8c8d38e3402721a81ce5981568f47b5c5889cb@changeid


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 2a4e01e5

net/mac80211/mlme.c

+5 −2
Original line number Diff line number Diff line
@@ -5844,8 +5844,11 @@ static void ieee80211_ml_reconfiguration(struct ieee80211_sub_if_data *sdata, 
			continue;

		}



		if (link_removal_timeout[link_id] < 1)

			link_delay = 0;

		else

			link_delay = link_conf->beacon_int *

			link_removal_timeout[link_id];

				(link_removal_timeout[link_id] - 1);



		if (!delay)

			delay = link_delay;