On Wed, 2019-09-18 at 11:27 +0000, Andriy Korud wrote:
> Hi,
> 
> we are developing system heavy using eBPF programs and AF_XDP and
> noticed something that looks like regression.
> 
> 
> In my setup I have system with 2 NICs: XXV710 and X722, kernel 5.2.1.
> 
> 
> Driver version 2.8.20-k (packed into kernel):
> 
> XXV710 - works fine with AF_XDP in  zero copy mode;
> 
> X722 - crash on loading eBPF program (seems to be known bug AFAIK).
> 
> 
> Driver version 2.9.21 (latest available from intel.com):
> 
> XXV710 - "operation not supported" error when initializing AF_XDP
> socket in zero copy mode;
> 
> X722 - the same, "operation not supported" error when initializing
> AF_XDP socket in zero copy mode.
> 
> 
> And my final goal is to run X722 in AF_XDP zero copy which seems hard
> to achieve now.
> 
> 
> Any points, ideas, thing to check or debug? - any help is very 
> valuable.

Could you try the recently released 5.3 kernel?  There were some bug
fixes in that kernel release for AF_XDP for both the i40e and ixgbe
driver.

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