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From: Ben Pfaff <blp@ovn.org>
To: dev@dpdk.org
Cc: Ben Pfaff <blp@ovn.org>
Subject: [dpdk-dev] [PATCH] app/testpmd: Document what the application does.
Date: Fri, 10 Sep 2021 10:57:34 -0700
Message-ID: <20210910175733.1248739-1-blp@ovn.org> (raw)

I could not find anything in the documentation that says what
testpmd does.  This should save other people time trying to
figure that out in the future.

Signed-off-by: Ben Pfaff <blp@ovn.org>
---
 doc/guides/testpmd_app_ug/run_app.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/guides/testpmd_app_ug/run_app.rst b/doc/guides/testpmd_app_ug/run_app.rst
index 6061674239..7c3406f72b 100644
--- a/doc/guides/testpmd_app_ug/run_app.rst
+++ b/doc/guides/testpmd_app_ug/run_app.rst
@@ -15,6 +15,12 @@ a list of available EAL command-line options.
 Testpmd Command-line Options
 ----------------------------
 
+By default, testpmd receives packets on each configured port and
+forwards the received packets to its paired port.  Ports 0 and 1 are
+paired, as are ports 2 and 3, and so on.  With an odd number of ports,
+the last port is paired with itself: packets received on the port are
+sent back out on the same port.
+
 The following are the command-line options for the testpmd applications.
 They must be separated from the EAL options, shown in the previous section, with a ``--`` separator:
 
-- 
2.31.1


             reply	other threads:[~2021-09-10 17:58 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-10 17:57 Ben Pfaff [this message]
2021-09-10 21:14 ` Thomas Monjalon
2021-09-13 18:25   ` Ben Pfaff
2021-09-14  7:58 ` Ferruh Yigit
2021-10-06 16:28   ` Ben Pfaff

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