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wifi: mac80211: don't perform DA check on S1G beacon

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S1G beacons don't contain the DA field as per IEEE80211-2024 9.3.4.3,
so the DA broadcast check reads the SA address of the S1G beacon which
will subsequently lead to the beacon being dropped. As a result, passive
scanning is not possible. Fix this by only performing the check on
non-S1G beacons to allow S1G long beacons to be processed during a
passive scan.

Fixes: ddf82e752f ("wifi: mac80211: Allow beacons to update BSS table regardless of scan")
Signed-off-by: Lachlan Hodges <lachlan.hodges@morsemicro.com>
Link: https://patch.msgid.link/20260120031122.309942-1-lachlan.hodges@morsemicro.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Lachlan Hodges
2026-01-20 14:11:21 +11:00
committed by Johannes Berg
parent e7df856787
commit 5dc6975566
1 changed files with 7 additions and 2 deletions
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9
net/mac80211/scan.c
View File

@@ -347,8 +347,13 @@ void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb)
mgmt->da))
return;
} else {
/* Beacons are expected only with broadcast address */
if (!is_broadcast_ether_addr(mgmt->da))
/*
* Non-S1G beacons are expected only with broadcast address.
* S1G beacons only carry the SA so no DA check is required
* nor possible.
*/
if (!ieee80211_is_s1g_beacon(mgmt->frame_control) &&
!is_broadcast_ether_addr(mgmt->da))
return;
}