linux-kernel - Re: [PATCH net-next v6 01/15] rtnetlink: provide permanent hardware address in RTM

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Message-ID: <20190702075500.1b9845e1@hermes.lan>
Date:   Tue, 2 Jul 2019 07:55:00 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Michal Kubecek <mkubecek@...e.cz>
Cc:     David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Jiri Pirko <jiri@...nulli.us>, Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        John Linville <linville@...driver.com>,
        Johannes Berg <johannes@...solutions.net>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v6 01/15] rtnetlink: provide permanent hardware
 address in RTM_NEWLINK

On Tue,  2 Jul 2019 13:49:44 +0200 (CEST)
Michal Kubecek <mkubecek@...e.cz> wrote:

> Permanent hardware address of a network device was traditionally provided
> via ethtool ioctl interface but as Jiri Pirko pointed out in a review of
> ethtool netlink interface, rtnetlink is much more suitable for it so let's
> add it to the RTM_NEWLINK message.
> 
> Add IFLA_PERM_ADDRESS attribute to RTM_NEWLINK messages unless the
> permanent address is all zeros (i.e. device driver did not fill it). As
> permanent address is not modifiable, reject userspace requests containing
> IFLA_PERM_ADDRESS attribute.
> 
> Note: we already provide permanent hardware address for bond slaves;
> unfortunately we cannot drop that attribute for backward compatibility
> reasons.
> 
> v5 -> v6: only add the attribute if permanent address is not zero
> 
> Signed-off-by: Michal Kubecek <mkubecek@...e.cz>

Do you want to make an iproute patch to display this?

Acked-by: Stephen Hemminger <stephen@...workplumber.org>