[PATCH 3/3] doc: Document new station diagnostic values.

(BssLastSeen, ChannelUtilization, and SignalNoiseRatio)
---
 doc/station-diagnostic-api.txt | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/doc/station-diagnostic-api.txt b/doc/station-diagnostic-api.txt
index 9b51d4b7..a946682e 100644
--- a/doc/station-diagnostic-api.txt
+++ b/doc/station-diagnostic-api.txt
@@ -27,6 +27,9 @@ Methods		dict GetDiagnostics()
 
 			Security - The chosen security for the connection.
 
+			BssLastSeen - The time in seconds since the BSS was seen
+				in a scan.
+
 			RSSI [optional] - The RSSI of the currently connected BSS.
 
 			AverageRSSI [optional] - Average RSSI of currently connected BSS.
@@ -59,6 +62,19 @@ Methods		dict GetDiagnostics()
 			ConnectedTime [optional] - Time Duration (in s) for which this STA
 						   remains connected to the BSS.
 
+			ChannelUtilization [optional] - The channel utilization
+				advertised by the BSS load element in scans.
+				Note the confidence of this value heavily
+				depends on the BssLastSeen time as this only
+				updates when IWD scans.
+
+			SignalNoiseRatio [optional] - The signal to noise ratio
+				(SNR) received on the last scan.
+				Note the confidence of this value heavily
+				depends on the BssLastSeen time as this only
+				updates when IWD scans.
+
+
 			Possible errors: net.connman.iwd.Busy
 					 net.connman.iwd.Failed
 					 net.connman.iwd.NotConnected
-- 
2.34.1