On Wed, 21 Aug 2019 17:49:33 +0900, Toshiaki Makita wrote:

quoted

Having an implementation nor support a feature of another implementation
and degrade gracefully to the slower one is not necessarily breakage.
We need to make a concious decision here, hence the clarifying question.  

As I described above, breakage can happen in some case, and if the patch 
breaks xdp_flow I think we need to fix xdp_flow at the same time. If 
xdp_flow does not support newly added features but it works for existing 
ones, it is OK. In the first place not all features can be offloaded to 
xdp_flow. I think this is the same as HW-offload.

I see, that sounds reasonable, yes. Thanks for clarifying.