[dpdk-dev] [RFC 17.08] flow_classify: add librte_flow_classify library

Thomas Monjalon thomas at monjalon.net
Thu May 18 22:31:57 CEST 2017


18/05/2017 13:33, Ferruh Yigit:
> On 5/17/2017 5:38 PM, Gaëtan Rivet wrote:
> > The other is the expression of flows through a shared syntax. Using
> > flags to propose presets can be simpler, but will probably not be flexible
> > enough. rte_flow_items are a first-class citizen in DPDK and are
> > already a data type that can express flows with flexibility. As
> > mentioned, they are however missing a few elements to fully cover IPFIX
> > meters, but nothing that cannot be added I think.
> > 
> > So I was probably not clear enough, but I was thinking about
> > supporting rte_flow_items in rte_flow_classify as the possible key
> > applications would use to configure their measurements. This should not
> > require rte_flow supports from the PMDs they would be using, only
> > rte_flow_item parsing from the rte_flow_classify library.
> > 
> > Otherwise, DPDK will probably end up with two competing flow
> > representations. Additionally, it may be interesting for applications
> > to bind these data directly to rte_flow actions once the
> > classification has been analyzed.
> 
> Thanks for clarification, I see now what you and Konstantin is proposing.
> 
> And yes it makes sense to use rte_flow to define flows in the library, I
> will update the RFC.

Does it mean that rte_flow.h must be moved from ethdev to this
new flow library? Or will it depend of ethdev?


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