On 1/20/23 19:50, Gregory Etelson wrote:
Hello Andrew,
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On 1/20/23 13:46, Gregory Etelson wrote:
and it's async version `rte_flow_async_action_handle_query_update`
to atomically query and update flow action.
Sorry, may be I'm missing something, but after reading previous
discussion I have a feeling that update could be queried data
dependent. However, I don't understand how it could be possible
with API below. Just my misunderstanding?
The goal of `rte_flow_action_handle_query_update()` is to execute query
and update actions atomically.
The function guaranties that action state will not change by any event
before both update and query complete.
If the function was called with the ` RTE_FLOW_QU_QUERY_FIRST `
`mode` argument, then update execution can depend
on query result. That's up to query format, PMD implementation and
hardware capabilities.
I hope that answered your question.
Sorry, I'm still confused. Could you explain a bit more,
please. How update could depend on query result?
Conditional update I described requires special action properties.
Consider an action object with a method that receives query and update as
parameters.
The method will activate update only if query result satisfies action state.
If the action was updated, both query and update were atomic for application.
The function returns the action state - updated or not.
Application is aware about the action properties.
Application applies action properties to returned state to discover if action
was updated.
Is it just a theoretical possibility or do you have an example
right now?
Caller already specified update structure...
Regards,
Gregory
