Re: multiple rx/tx rings and interrupt delivery on newer nics

[Thor Lancelot Simon <tls%rek.tjls.com@localhost>]

On Fri, Mar 13, 2009 at 05:47:38PM +0100, Manuel Bouyer wrote:
> 
> We'd need a generic way to add priority tags to packets, and then
> use it in NIC drivers.

But most modern NICs can use multiple receive rings based on much
richer (and more useful) criteria than just priority.  And, generally
speaking, you never want anything in the system to touch all packets --
you want them segregated to a receive ring based on, for example,
source and destination address and port, and you never want anything
that's not on CPU N to touch receive ring N.

Thor