ubus: introduce enum for beacon measurement mode

This improves code readability.

Signed-off-by: David Bauer <mail@david-bauer.net>

ubus.c

@@ -524,7 +524,7 @@ int usteer_ubus_trigger_client_scan(struct sta_info *si)
 
 	blob_buf_init(&b, 0);
 	blobmsg_printf(&b, "addr", MAC_ADDR_FMT, MAC_ADDR_DATA(si->sta->addr));
-	blobmsg_add_u32(&b, "mode", 1);
+	blobmsg_add_u32(&b, "mode", BEACON_MEASUREMENT_ACTIVE);
 	blobmsg_add_u32(&b, "duration", 65535);
 	blobmsg_add_u32(&b, "channel", 255);
 	blobmsg_add_u32(&b, "op_class", si->scan_band ? 1 : 12);

usteer.h

@@ -60,6 +60,12 @@ enum usteer_sta_connection_state {
 	STA_DISCONNECTED = 2,
 };
 
+enum usteer_beacon_measurement_mode {
+	BEACON_MEASUREMENT_PASSIVE = 0,
+	BEACON_MEASUREMENT_ACTIVE = 1,
+	BEACON_MEASUREMENT_TABLE = 2,
+};
+
 struct sta_info;
 struct usteer_local_node;
 struct usteer_remote_host;