Re: [PATCH net-next v2] ethtool: add netlink based get rxfh support

[Jakub Kicinski <kuba@kernel.org>]

On Thu, 10 Nov 2022 17:24:15 -0600 Samudrala, Sridhar wrote:
> > The RSS context thing is a pretty shallow abstraction, I don't think we
> > should be extending it into "queue groups" or whatnot. We'll probably
> > need some devlink objects at some point (rate configuration?) and
> > locking order is devlink > rtnl, so spawning things from within ethtool
> > will be a pain :S  
> 
> We are going this path of extending ethtool rss context interface to support
> per queue-group parameters based on this feedback.
>    https://lore.kernel.org/netdev/20220314131114.635d5acb@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com/
> 
> Per queue-group rate can already be configured when creating queue groups via
> tc-mpqrio interface using bw_rlimit parameters.

Right, but that's still just flow-director-y/hash-y thing?
Does the name RSS imply purely hash based distribution?

My worry is that if we go with a more broad name like
"queue group" someone may be mislead to adding controls 
unrelated to flow <> queue assignment here.