[PATCH 1/2] hostap: drop probe request if number of stations limit is reached

[Felix Fietkau]

If multiple APs serve the same SSID, and one of them is full, it should
not respond to probe requests anymore, as it won't allow clients to
connect anyway.

Signed-hostap: Felix Fietkau <nbd at openwrt.org>
---
 src/ap/beacon.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/ap/beacon.c b/src/ap/beacon.c
index 4c47c75..3e0775e 100644
--- a/src/ap/beacon.c
+++ b/src/ap/beacon.c
@@ -455,6 +455,12 @@ void handle_probe_req(struct hostapd_data *hapd,
 		return;
 	}
 
+	if (!sta && hapd->num_sta >= hapd->conf->max_num_sta) {
+		wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " ignored,"
+			   " too many connected stations.", MAC2STR(mgmt->sa));
+		return;
+	}
+
 #ifdef CONFIG_INTERWORKING
 	if (elems.interworking && elems.interworking_len >= 1) {
 		u8 ant = elems.interworking[0] & 0x0f;
-- 
1.8.0.2