On Tue, 16 Jun 2020 at 17:13, Navdeep Parhar <n...@freebsd.org> wrote:

> We could have a global knob that tells all NIC drivers to use a reserved
> queue for non-RSS traffic, but that would be advisory at best because
> the tx queue selection takes place inside the driver's (or iflib's)
> transmit routine.  The meat of the change is going to be in iflib and
> all non-iflib drivers' if_transmit.
>

This isn't a terrible idea - we do the same on wifi for EAPOL / 802.1x
frames, and some drivers even do the same thing for DHCP frames. Doing it
in iflib would actually be kinda nice.



-adrian
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