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· 8 min read
Asumu Takikawa

A while back, I wrote a blog post explaining some of the basics of writing plugins for the VPP networking toolkit.

In that previous post, I explained a few mechanisms for hooking a plugin into VPP's graph architecture so that your code can process incoming packets.

I also briefly mentioned something called DPOs (data path objects) but didn't explain what they are or how they work. Since then, I've been reading and hacking on code that involves DPOs, so I'd like to attempt to explain them in this post.