Sample plugin for VPP {#sample_plugin_doc}

Overview

This is the VPP sample plugin demonstrates how to create a new plugin that integrates with VPP. The sample code implements a trival macswap algorithim that demonstrates plugin runtime integration with the VPP graph hierachy, api and cli.

For deeper dive information see the annotations in the sample code itself. See [sample.c](@ref sample.c)

How to build and run the sample plugin.

Now (re)build VPP.

$ make wipe

Define environmental variable 'SAMPLE_PLUGIN=yes' with a process scope

$ SAMPLE_PLUGIN=yes make build

or a session scope, and build VPP.

$ export SAMPLE_PLUGIN=yes
$ make build

Now run VPP and make sure the plugin is loaded.

$ make run
...
load_one_plugin:184: Loaded plugin: memif_plugin.so (Packet Memory Interface (experimetal))
load_one_plugin:184: Loaded plugin: sample_plugin.so (Sample of VPP Plugin)
load_one_plugin:184: Loaded plugin: nat_plugin.so (Network Address Translation)
...
DBGvpp#

How to create a new plugin

To create a new plugin based on the sample plugin, copy and rename the sample plugin directory and automake config.

cp -r src/examples/sample-plugin/sample src/plugins/newplugin
cp src/examples/sample-plugin/sample.am src/plugins/newplugin.am

Add the following entry to the plugins section of src/configure.ac.

PLUGIN_ENABLED(newplugin)

Add the following entry to the plugins section of src/plugins/Makefile.am

if ENABLE_NEWPLUGIN
include newplugin.am
endif

Now (re)build VPP.

$ make wipe
$ make build

Configuration

To enable the sample plugin

sample macswap <interface name>

To disable the sample plugin

sample macswap <interface name> disable