return;
}
+ /*
+ * No need to reply if the Probe Request frame was sent on an adjacent
+ * channel. IEEE Std 802.11-2012 describes this as a requirement for an
+ * AP with dot11RadioMeasurementActivated set to true, but strictly
+ * speaking does not allow such ignoring of Probe Request frames if
+ * dot11RadioMeasurementActivated is false. Anyway, this can help reduce
+ * number of unnecessary Probe Response frames for cases where the STA
+ * is less likely to see them (Probe Request frame sent on a
+ * neighboring, but partially overlapping, channel).
+ */
+ if (elems.ds_params && elems.ds_params_len == 1 &&
+ hapd->iface->current_mode &&
+ (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G ||
+ hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) &&
+ hapd->iconf->channel != elems.ds_params[0]) {
+ wpa_printf(MSG_DEBUG,
+ "Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u",
+ hapd->iconf->channel, elems.ds_params[0]);
+ return;
+ }
+
#ifdef CONFIG_P2P
if (hapd->p2p && elems.wps_ie) {
struct wpabuf *wps;