Re: [PATCH v3] ethdev: add hint when creating async transfer table

[Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>]

On 10/4/22 11:31, Andrew Rybchenko wrote:
> On 9/28/22 12:24, Rongwei Liu wrote:
>> The transfer domain rule is able to match traffic wire/vf
>> origin and it means two directions' underlayer resource.
>>
>> In customer deployments, they usually match only one direction
>> traffic in single flow table: either from wire or from vf.
>>
>> Introduce one new member transfer_mode into rte_flow_template_table_attr
>> to indicate the flow table direction property: from wire, from vf
>> or bi-direction(default).
>>
>> It helps to save underlayer memory also on insertion rate, and this
>> new field doesn't expose any matching criteira.
>>
>> By default, the transfer domain is to match bi-direction traffic, and
>> no behavior changed.
>>
>> 1. Match wire origin only
>>     flow template_table 0 create group 0 priority 0 transfer wire_orig...
>> 2. Match vf origin only
>>     flow template_table 0 create group 0 priority 0 transfer vf_orig...
> 
> Since wire_orig and vf_orig are just optional hints and not
> all PMDs are obliged to handle it, it does not impose any
> matching criteria. So, example above are misleading and you
> need to add pattern items to highlight that corresponding rules
> are really wire_orig or vf_orig.

I'm sorry, but I still don't see how it is addressed in v4.

> 
>>
>> Signed-off-by: Rongwei Liu <rongweil@nvidia.com>
>> Acked-by: Ori Kam <orika@nvidia.com>
> 
> [snip]
>