[ovs-dev] [PATCH V2 01/14] netdev-offload: Add HW miss packet state recover API

[Sriharsha Basavapatna]

On Tue, Feb 23, 2021 at 6:51 PM Eli Britstein <elibr at nvidia.com> wrote:
>
>
> On 2/23/2021 3:10 PM, Sriharsha Basavapatna wrote:
>
> On Wed, Feb 10, 2021 at 8:57 PM Eli Britstein <elibr at nvidia.com> wrote:
>
> When the HW offload involves multiple flows, like in tunnel decap path,
> it is possible that not all flows in the path are offloaded, resulting
> in partial processing in HW. In order to proceed with rest of the
> processing in SW, the packet state has to be recovered as if it was
> processed in SW from the beginning. Add API for that.
>
> Can you be more specific/clear on what this API does ? What specific
> packet state is this referring to and what is meant by recovering the
> state here ? For example, if recovering  the packet state means to
> check if the packet is encapsulated and to pop the tunnel header, then
> it would make it clear to just state that.
> Thanks,
> -Harsha
>
> The state refers to the state provided by the HW. This patch introduces a generic API to support all cases.
>
> The case to pop in SW in case the info provided is that the packet is encapsulated is a private case.

Private case ? IMO, the API/interface should provide sufficient
information on what is meant by the state and recovery for each use
case, starting with tunnel encapsulated packets for now.

>
>
>

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