netdev - Re: [PATCH ethtool] netlink: rss: retrieve ring count using ETHTOOL

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Message-ID: <tctt7svco2xfmp7qr2rrgrpx6kzyvlaia2lxfqlunrdlgjny3h@77gxzrjooolu>
Date: Fri, 4 Oct 2024 01:20:03 +0200
From: Michal Kubecek <mkubecek@...e.cz>
To: Vladimir Oltean <vladimir.oltean@....com>
Cc: Jacob Keller <jacob.e.keller@...el.com>, 
	"Mogilappagari, Sudheer" <sudheer.mogilappagari@...el.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, 
	Jakub Kicinski <kuba@...nel.org>
Subject: Re: [PATCH ethtool] netlink: rss: retrieve ring count using
 ETHTOOL_GRXRINGS ioctl

On Thu, Oct 03, 2024 at 04:49:16PM +0300, Vladimir Oltean wrote:
> On Thu, Oct 03, 2024 at 01:09:47PM +0200, Michal Kubecek wrote:
> > I'm afraid we will have to keep the unfortunate ioctl fallback for quite
> > long. The only other option would be to only use netlink for RSS against
> > kernel which provides full information and use only ioctl against those
> > which don't.
> > 
> > Michal
> 
> So, then, is there anything blocking this patch?

I'm still not fully convinced that this mix of netlink and ioctl is
actually better than fully reverting to ioctl until we can get all
information via netlink.

Either way, I'm going to handle this before the end of this week so that
ethtool 6.11 can be released. At the moment I'm in favor of your patch,
however unhappy I'm about it.

Michal

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