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From: Paul Emmerich <emmericp@net.in.tum.de>
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Subject: Re: [dpdk-users] Beginners question: rte_eth_tx_burst,
	rte_mbuf access synchronization
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Hi,


> Philipp Beyer <pbeyer@voipfuture.com>:
> But I might have found another idea: What about preparing all buffers =
of a memory pool with the same payload? I should than get a pre-filled =
buffer from rte_pktmbuf_alloc, right? Let's say, I initialize a buffer =
for transmittion, the transmitting code free's this buffer, and I get =
the same buffer back from rte_pktmbuf_alloc. What do I have to =
re-initialize to have the same buffer again? Only the payload length? Is =
this approach feasible, based on documented/specified behaviour?

Yes, that's the easiest way to do it with DPDK's mbuf model. Your first
approach would work well on frameworks that expose the ringbuffers
directly in their API (e.g., netmap).

I've implemented it like this in my packet generator MoonGen, you can
read Section 4.2. of our paper at
=
https://www.net.in.tum.de/fileadmin/bibtex/publications/papers/MoonGen_IMC=
2015.pdf
for further details.

 Paul