[dpdk-dev] Working of pipeline in a given config file and regarding user-defined actions in IP_PIPELINE application

Dumitrescu, Cristian cristian.dumitrescu at intel.com
Tue Apr 18 11:53:46 CEST 2017



From: Nidhia Varghese [mailto:nidhiavarghese93 at gmail.com]
Sent: Tuesday, April 18, 2017 6:40 AM
To: Dumitrescu, Cristian <cristian.dumitrescu at intel.com>
Cc: Singh, Jasvinder <jasvinder.singh at intel.com>; dev at dpdk.org; users at dpdk.org
Subject: Re: [dpdk-dev] Working of pipeline in a given config file and regarding user-defined actions in IP_PIPELINE application

Hi Christian,

Can you please elaborate on how to use DMA action of pass-through table for this?

Is that like creating a separate pipeline for saving this metadata to the headroom space and in the next pipeline we use this metadata field for further lookups. And we will be using different keys for each of these pipelines. Is that so?

Thanks for your help.

Nidhia


[Cristian] Yes, exactly. In the config/edge_router_upstream.cfg personality, you can see this taking place between PIPELINE2 (Pass-through) and PIPELINE3 (FlowClassification). The hash table mask approach can be used here to eliminate the PIPELINE2, but this was an after-thought at the time, which now is supported.


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