netdev - Re: [PATCH net-next v6 04/15] ethtool: introduce ethtool netlink interface

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Message-ID: <533462cfc4cf42be9886078a1d8b450d07cbbf6e.camel@sipsolutions.net>
Date:   Mon, 08 Jul 2019 20:12:50 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Michal Kubecek <mkubecek@...e.cz>, netdev@...r.kernel.org
Cc:     Jiri Pirko <jiri@...nulli.us>, David Miller <davem@...emloft.net>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        John Linville <linville@...driver.com>,
        Stephen Hemminger <stephen@...workplumber.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v6 04/15] ethtool: introduce ethtool netlink
 interface

On Mon, 2019-07-08 at 19:27 +0200, Michal Kubecek wrote:
> 
> Second reason is that with 8-bit genetlink command/message id, the space
> is not as infinite as it might seem.

FWIW, there isn't really any good reason for this, we have like 16
reserved bits in the genl header.

OTOH, having a LOT of ops will certainly cost space in the kernel
image...

johannes