[Bug 230465] ixl: not working in netmap mode

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230465

--- Comment #3 from Charles Goncalves <halfling at halfling.com.br> ---
I've noted that in POLLIN this: 
poll(pfd, rxrings, -1);
Doesn't work, need it to be something like: 
poll(pfd, rxrings, 1); 
But with this I have a latency problem.

And I also have noted that I only can TX from TX-RING-0 if I use TX-RING more
than 0, doesn't work. In my test scenario my ixl NIC has 8 rings.

Can anyone understand the reason?

Thanks!

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