[dpdk-dev] [PATCH] examples/l3fwd: force CRC stripping for i40evf

Ananyev, Konstantin konstantin.ananyev at intel.com
Wed Nov 9 12:08:05 CET 2016

> Adding Helin to the conversation.
> > That's a common problem across Intel VF devices. Bothe igb and ixgbe
> > overcomes that problem just by forcing ' rxmode.hw_strip_crc = 1;' at
> > PMD itself:
> [...]
> > Wonder, can't i40e VF do the same?
> Right, however, and this (silent failure) approach was rejected by the
> maintainers. Please, refer to this thread:
> http://dpdk.org/ml/archives/dev/2016-April/037523.html
>  > BTW, all other examples would experience same problem too, right?
> Correct, so the broader question would be "what is the correct behavior
> for an example application, when a port configuration isn't supported by
> the hardware?".
> My stand, FWIW, is that igb and ixgbe should have the same semantics as
> i40e currently has, i.e. return an error to the user if the port is
> mis-configured, NOT changing the setting behind the users back.

Fine by me, but then it means that the fix haw to include changes for all apps
plus ixgbe and igb PMDs, correct? :)


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