[dpdk-dev] [PATCH 2/2] crypto/aesni_mb: add new option to select SIMD mode
Declan Doherty
declan.doherty at intel.com
Fri Dec 2 17:05:53 CET 2016
On 02/12/16 10:37, Thomas Monjalon wrote:
> 2016-12-02 09:46, Declan Doherty:
>> Add new initialisation option to the aesni_mb_pmd to allow the user to specify
>> which set of SIMD functions to load from the AESNI Multi-Buffer Crypto for IPsec
>> library.
>
> Why let user choose? Isn't the most recent the better?
>
> This PMD and other software crypto PMDs could (should?) override the CFLAGS
> like rte_acl do, in order to be able to use recent SIMD functions even if it
> was globally disabled by the compilation target.
> See my comment in the rte_memset thread.
>
In general yes, I was mainly using this to allow quick performance
comparisons between different platforms and different instruction sets
on the same platform without recompilation, but I admit that this is
probably not a normal end user use case.
I'll look at the CFLAGS options you mention and address in a V2.
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