[dpdk-dev] Question on AESNI PMD

Thomas Monjalon thomas at monjalon.net
Fri Mar 9 23:35:45 CET 2018


Cc Declan and Pablo, the maintainers

09/03/2018 23:08, Luse, Paul E:
> Hi,
> 
> I'm working on an SPDK module that uses the DPDK cryptodev framework, initially I'm using the AESNI PMD and have a few questions. in the doc it says that only in-place is supported however I see code in set_mb_job_params() just after the comment "Mutable crypto operation parameters" it appears to support a separate src and dst m_buf so curious about that.
> 
> For my use case (storage) I'm using external data buffers so I can't use that code anyways but I was able to make some minor changes and am able to pass in different src and dst m_bufs that point to my own data buffers (not in the packet) and it seems to be working fine.
> 
> So my 2 questions are:
> 
> (1) is the documented in-place limitation simply not correct?
> 
> (2) would there be any upstream interest in supporting a patch that enables m_bufs using external data buffers for src and dst?
> 
> Thanks!
> Paul







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