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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20190812084039.2fbd1f01@hermes.lan>
Date:   Mon, 12 Aug 2019 08:40:39 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     David Ahern <dsahern@...il.com>,
        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

On Mon, 12 Aug 2019 10:31:39 +0200
Jiri Pirko <jiri@...nulli.us> wrote:

> 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!

The existing IFALIAS takes an empty name to do deletion.