On Mon, 13 Jan 2020 at 01:28, Ryan Goodfellow <rgoodfel@xxxxxxx> wrote:
>
[...]
>
> I could not get zero-copy to work with the i40e driver as it would crash. I've
> attached the corresponding traces from dmesg.
Thanks Ryan! I had a look at the crash, and it's in the XDP setup:
i40e_xdp_setup:
...
for (i = 0; i < vsi->num_queue_pairs; i++)
WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);
and the vsi->rx_ring[0] is NULL. This is clearly broken.
It would help with more lines from your dmesg: the cut i40e log hints
that something is really broken:
[ 328.579154] i40e 0000:b7:00.2: failed to get tracking for 256
queues for VSI 0 err -12
[ 328.579280] i40e 0000:b7:00.2: setup of MAIN VSI failed
[ 328.579367] i40e 0000:b7:00.2: can't remove VEB 162 with 0 VSIs left
Is it possible to dig out the complete log?
Thanks!
Björn
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