New upstream version 18.11.1

[deb_dpdk.git] / doc / guides / testpmd_app_ug / run_app.rst

diff --git a/doc/guides/testpmd_app_ug/run_app.rst b/doc/guides/testpmd_app_ug/run_app.rst
index f717bd3..4495ed0 100644 (file)
--- a/doc/guides/testpmd_app_ug/run_app.rst
+++ b/doc/guides/testpmd_app_ug/run_app.rst
@@ -196,7 +196,7 @@ The commandline options are:
 
 *   ``--port-topology=mode``
 
-    Set port topology, where mode is ``paired`` (the default) or ``chained``.
+    Set port topology, where mode is ``paired`` (the default), ``chained`` or ``loop``.
 
     In ``paired`` mode, the forwarding is between pairs of ports, for example: (0,1), (2,3), (4,5).
 
@@ -204,6 +204,8 @@ The commandline options are:
 
     The ordering of the ports can be changed using the portlist testpmd runtime function.
 
+    In ``loop`` mode, ingress traffic is simply transmitted back on the same interface.
+
 *   ``--forward-mode=mode``
 
     Set the forwarding mode where ``mode`` is one of the following::