From: Ilan Peer <ilan.peer@xxxxxxxxx>
When the kernel driver doesn't support scanning on an AP interface,
nl80211 drivers attempts to switch to station interface to perform
a scan. However, when the AP is an AP MLD and there are already
active links this is not valid. In such a case, fail the scan.
Signed-off-by: Ilan Peer <ilan.peer@xxxxxxxxx>
Reviewed-by: Andrei Otcheretianski <andrei.otcheretianski@xxxxxxxxx>
Signed-off-by: Benjamin Berg <benjamin.berg@xxxxxxxxx>
---
src/drivers/driver_nl80211_scan.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/src/drivers/driver_nl80211_scan.c b/src/drivers/driver_nl80211_scan.c
index da90b55553..06e1e7058b 100644
--- a/src/drivers/driver_nl80211_scan.c
+++ b/src/drivers/driver_nl80211_scan.c
@@ -458,19 +458,28 @@ int wpa_driver_nl80211_scan(struct i802_bss *bss,
/*
* mac80211 does not allow scan requests in AP mode, so
- * try to do this in station mode.
+ * try to do this in station mode. Do so only if there
+ * are not active links in the AP MLD.
*/
+ wpa_printf(MSG_DEBUG,
+ "nl80211: AP scan failed on %s. Links=0x%x",
+ bss->ifname, bss->valid_links);
+
+ if (bss->valid_links)
+ goto fail;
+
drv->ap_scan_as_station = drv->nlmode;
- if (wpa_driver_nl80211_set_mode(
- bss, NL80211_IFTYPE_STATION) ||
+ if (wpa_driver_nl80211_set_mode(bss,
+ NL80211_IFTYPE_STATION) ||
wpa_driver_nl80211_scan(bss, params)) {
nl80211_restore_ap_mode(bss);
goto fail;
}
ret = 0;
- } else
+ } else {
goto fail;
+ }
}
drv->scan_state = SCAN_REQUESTED;
--
2.50.0
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