Add more description for rx and tx param

Add more description for rx and tx in diagnostics command.

Change-Id: Ia4bc5a43a0a90392444dfbe710d6622986bf34b0
Closes-Bug: 1628368

diff --git a/api-ref/source/diagnostics.inc b/api-ref/source/diagnostics.inc
index f2403a762126315e0158bf7ef17613f24c72ae48..2476f4ebdd22455aa7f9a9027e82f3ba8e3be946 100644 (file)
--- a/api-ref/source/diagnostics.inc
+++ b/api-ref/source/diagnostics.inc
@@ -38,7 +38,9 @@ only, and not relied upon by programmatic tools.
 
 **Example Server diagnostics**
 
-Below is an example of diagnostics for a libvirt based server instance.
+Below is an example of diagnostics for a libvirt based instance. The unit of the return
+value is hypervisor specific, but in this case the unit of vnet1_rx* and
+vnet1_tx* is octets.
 
 .. literalinclude:: ../../doc/api_samples/os-server-diagnostics/server-diagnostics-get-resp.json
    :language: javascript