Hi,

On 06/08/2016 10:22 AM, Chandran, Sugesh wrote:

quoted

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I guess the IP checksum also important as L4. In some cases, UDP
checksum is zero and no need to validate it. But Ip checksum is
present on all the packets and that must be validated all  the time.
At higher packet rate, the ip checksum offload can offer slight performance

improvement. What do you think??

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Agree, in some situations (and this is even more true with packet types /
smartnics), the application could process without accessing the packet data if
we keep the IP cksum flags.

[Sugesh] True, If that's the case, Will you considering to implement IP
checksum flags as well along with L4?
As you said , this will be useful when we offload packet lookup itself into the NICs(May be
when using Flow director) ? 

Yes, I plan to implement the same rx status flags (good, bad, unknown,
none) for rx IP checksum too.

Regards,
Olivier