[ovs-discuss] DPDK OVS HW offload related question

Patil, Harish Harish.Patil at cavium.com
Wed May 3 04:56:43 UTC 2017


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>On 4/26/17, 11:45 AM, "ovs-discuss-bounces at openvswitch.org on behalf of
>Patil, Harish" <ovs-discuss-bounces at openvswitch.org on behalf of
>Harish.Patil at cavium.com> wrote:
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>    
>    
>    >Hello,
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>    >
>    
>    >We are planning to utilize the rte_flow (generic flow interface)
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>    >introduced in DPDK 16.11. It provides, among other things, a flow
>action
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>    >type called RTE_FLOW_ACTION_TYPE_MARK that attaches an arbitrary
>32-bit
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>    >integer value for packets matching the flow director rules and sets
>    
>    >PKT_RX_FDIR_ID flag (flow director ID reported if FDIR match). Would
>like
>    
>    >to understand the following:
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>    >1) Are the OVS changes in place to be able to make use of this driver
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>    >returned ³hint² (or flow-id) in the data path for lookups?
>
>No
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> If so, can you
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>    >please provide code pointer?
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>    >2) Is that 32-bit tag/flow_id meant to be used for megaflow cache
>only? 
>
>TBD, if future support were to exist.
>
>In    
>    > the existing implementation, it seems NIC computed RSS hash is used
>for
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>    >EMC only.
>
>right
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>    >
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>    >Thanks,
>    
>    >Harish
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>    >
>    
>    >_______________________________________________
>    
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>    >
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>    
>    Reposting this question, haven’t received any response.
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>    First of all, is this the right forum for this question?
>    
>    Could someone at least suggest who would the right folks to answer
>this?
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>    
>    
>    Thanks.
>    
>    
>    
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I missed this email due to my filter settings.
Thanks Darrell for your response.
Do you know when OVS changes might be available to take advantage of HW
provided flow_id info for the matching flows?
Thanks.







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