[Intel-wired-lan] zero-copy between interfaces

Ryan Goodfellow rgoodfel at isi.edu
Mon Jan 20 18:33:09 UTC 2020

On Mon, Jan 20, 2020 at 09:24:05AM +0100, Magnus Karlsson wrote:
> I was wondering if you could run two small experiments since I cannot
> reproduce this?
> 1: Run your program using the two ports on your X710 card. Does it
> work? This is my setup and works for me.

The X710 card works without issue.

> 2: On your Mellanox setup, insert a kick_tx() call for each of your
> two sockets before the poll() call in your forward() function. Just to
> see if it works when we explicitly wake up the driver.

This did not have an effect on the observed behavior. Exactly N packets go
through the interface where N is equal to the size of the FQ/CQ rings and then
forwarding halts.

~ ry

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