netdev - Re: [patch net-next rfc 3/7] net: rtnetlink: add commands to add and delete alternative ifnames

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Message-ID: <20190812083139.GA2428@nanopsycho>
Date:   Mon, 12 Aug 2019 10:31:39 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     David Ahern <dsahern@...il.com>
Cc:     Roopa Prabhu <roopa@...ulusnetworks.com>,
        netdev <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>, dcbw@...hat.com,
        Michal Kubecek <mkubecek@...e.cz>,
        Andrew Lunn <andrew@...n.ch>, parav@...lanox.com,
        Saeed Mahameed <saeedm@...lanox.com>,
        mlxsw <mlxsw@...lanox.com>
Subject: Re: [patch net-next rfc 3/7] net: rtnetlink: add commands to add and
 delete alternative ifnames

Mon, Aug 12, 2019 at 03:37:26AM CEST, dsahern@...il.com wrote:
>On 8/11/19 7:34 PM, David Ahern wrote:
>> On 8/10/19 12:30 AM, Jiri Pirko wrote:
>>> Could you please write me an example message of add/remove?
>> 
>> altnames are for existing netdevs, yes? existing netdevs have an id and
>> a name - 2 existing references for identifying the existing netdev for
>> which an altname will be added. Even using the altname as the main
>> 'handle' for a setlink change, I see no reason why the GETLINK api can
>> not take an the IFLA_ALT_IFNAME and return the full details of the
>> device if the altname is unique.
>> 
>> So, what do the new RTM commands give you that you can not do with
>> RTM_*LINK?
>> 
>
>
>To put this another way, the ALT_NAME is an attribute of an object - a
>LINK. It is *not* a separate object which requires its own set of
>commands for manipulating.

Okay, again, could you provide example of a message to add/remove
altname using existing setlink message? Thanks!