This patch adds a missing topology loopback mode for port-topology
option in testpmd guide. The testpmd loopback option
(PORT_TOPOLOGY_LOOP) was added to testpmd parameter
port-topology back in 2014, but it seems that it was never added
to the testpmd guide. This patch adds it in the testpmd guide.
Fixes: 3e2006d6186c ("app/testpmd: add loopback topology")
Cc: sta...@dpdk.org
Signed-off-by: Rami Rosen <ramir...@gmail.com>
---
doc/guides/testpmd_app_ug/run_app.rst | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/doc/guides/testpmd_app_ug/run_app.rst
b/doc/guides/testpmd_app_ug/run_app.rst
index f717bd3..ee51b1d 100644
--- 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
``loopback``.
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 ``loopback`` 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::
--
1.8.3.1
