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 <b...@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
