netdev - Re: [PATCH net-next v3 1/6] net: ethtool: allow symmetric-xor RSS hash for any flow type

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Date: Mon, 16 Oct 2023 08:02:02 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Ahmed Zaki <ahmed.zaki@...el.com>
Cc: <netdev@...r.kernel.org>, <intel-wired-lan@...ts.osuosl.org>,
 <corbet@....net>, <jesse.brandeburg@...el.com>,
 <anthony.l.nguyen@...el.com>, <davem@...emloft.net>, <edumazet@...gle.com>,
 <pabeni@...hat.com>, <vladimir.oltean@....com>, <andrew@...n.ch>,
 <horms@...nel.org>, <mkubecek@...e.cz>, <linux-doc@...r.kernel.org>,
 Wojciech Drewek <wojciech.drewek@...el.com>, Willem de Bruijn
 <willemdebruijn.kernel@...il.com>
Subject: Re: [PATCH net-next v3 1/6] net: ethtool: allow symmetric-xor RSS
 hash for any flow type

On Sat, 14 Oct 2023 06:19:54 -0600 Ahmed Zaki wrote:
> >> +#define        RXH_SYMMETRIC_XOR       (1 << 30)
> >> +#define        RXH_DISCARD             (1 << 31)
> >>
> >> Are these indentation changes intentional?
> >>
> >>
> >> Yes, for alignment ("RXH_SYMMETRIC_XOR" is too long).  
> > 
> > I think it's preferable to not touch other lines. Among others, that
> > messes up git blame. But it's subjective. Follow your preference if no
> > one else chimes in.  
> 
> Jakub,
> 
> Sorry for late reply, I was off for few days.
> 
> I'd like to keep this version, I don't see any other comments that needs 
> to be addressed. Can you accept this or need a v4/rebase ?

I think you should add a comment above the define explaining what
"symmetric-xor" is. Is this correct?

/* XOR corresponding source and destination fields, both copies 
 * of the XOR'ed fields are fed into the RSS and RXHASH calculation.
 */