netdev - Re: [Intel-wired-lan] [PATCH net-next v4 1/6] net: ethtool: allow symmetric-xor RSS hash for any flow type

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Date: Fri, 20 Oct 2023 16:49:17 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Ahmed Zaki <ahmed.zaki@...el.com>
Cc: <mkubecek@...e.cz>, <andrew@...n.ch>, <willemdebruijn.kernel@...il.com>,
 Wojciech Drewek <wojciech.drewek@...el.com>, <corbet@....net>,
 <netdev@...r.kernel.org>, <linux-doc@...r.kernel.org>,
 <jesse.brandeburg@...el.com>, <edumazet@...gle.com>,
 <anthony.l.nguyen@...el.com>, <horms@...nel.org>,
 <vladimir.oltean@....com>, Jacob Keller <jacob.e.keller@...el.com>,
 <intel-wired-lan@...ts.osuosl.org>, <pabeni@...hat.com>,
 <davem@...emloft.net>
Subject: Re: [Intel-wired-lan] [PATCH net-next v4 1/6] net: ethtool: allow
 symmetric-xor RSS hash for any flow type

On Fri, 20 Oct 2023 17:14:11 -0600 Ahmed Zaki wrote:
> I replied to that here:
> 
> https://lore.kernel.org/all/afb4a06f-cfba-47ba-adb3-09bea7cb5f00@intel.com/
> 
> I am kind of confused now so please bear with me. ethtool either sends 
> "ethtool_rxfh" or "ethtool_rxnfc". AFAIK "ethtool_rxfh" is the interface 
> for "ethtool -X" which is used to set the RSS algorithm. But we kind of 
> agreed to go with "ethtool -U|-N" for symmetric-xor, and that uses 
> "ethtool_rxnfc" (as implemented in this series).

I have no strong preference. Sounds like Alex prefers to keep it closer
to algo, which is "ethtool_rxfh".

> Do you mean use "ethtool_rxfh" instead of "ethtool_rxnfc"? how would 
> that work on the ethtool user interface?

I don't know what you're asking of us. If you find the code to confusing
maybe someone at Intel can help you :|