HI Lee
>-----Original Message-----
>From: Daly, Lee [mailto:lee.d...@intel.com]
>Sent: 25 June 2018 15:35
>To: Verma, Shally <shally.ve...@cavium.com>
>Cc: Trahe, Fiona <fiona.tr...@intel.com>; dev@dpdk.org;
>pathr...@caviumnetworks.com; Sahu, Sunila <sunila.s...@cavium.com>;
>Gupta, Ashish <ashish.gu...@cavium.com>; De Lara Guarch, Pablo
><pablo.de.lara.gua...@intel.com>
>Subject: RE: [dpdk-dev] [PATCH v1 2/6] compress/zlib: add device setup PMD ops
>
//snip
>> >>+static const struct rte_compressdev_capabilities zlib_pmd_capabilities[]
>> = {
>> >>+ { /* Deflate */
>> >>+ .algo = RTE_COMP_ALGO_DEFLATE,
>> >>+ .comp_feature_flags =
>> RTE_COMP_FF_SHAREABLE_PRIV_XFORM,
>> >[Lee] The priv_xform structure in this case is not shareable, as it
>> >contains your zlib_stream structure, which contains zlibs own zstream
>> >struct. This is not read only, the contents of this zstream will be written
>> >to,
>> which means it is not shareable across queue pairs or devices.
>> >
>> [Shally] Per my understanding, SHAREABLE_PRIV_XFORM here means xform
>> is shareable by all ops in one single enqueue_burst() but not across devices
>> or qps by multiple threads in parallel. Does your implementation support
>> such usage of shareable priv_xforms?
>>
>> Thanks for review.
>> Shally
>[Lee]
>Hey Shally, I have just clarified this with Fiona and Pablo and the intended
>use of Shareable priv xforms is to allow a xform to be shared
>across devices & qps not just all the ops in a burst, yes the ISA-L PMD has a
>shareable private xform due to all its contents being read
>only.
>
[Shally] Ok. Got that. Will change it accordingly.
Thanks
Shally
>>
>> >>+ .window_size = {
>> >>+ .min = 8,
>> >>+ .max = 15,
>> >>+ .increment = 2
>> >>+ },
>> >>+ },
>> >>+
>> >>+ RTE_COMP_END_OF_CAPABILITIES_LIST()
>> >>+
