netdev - Re: [PATCH net-next] rtnetlink: Honour NLM_F_ECHO flag in rtnl

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Date:   Thu, 22 Sep 2022 12:52:38 +0200
From:   Florent Fourcot <florent.fourcot@...irst.fr>
To:     Jakub Kicinski <kuba@...nel.org>,
        Guillaume Nault <gnault@...hat.com>
Cc:     Hangbin Liu <liuhangbin@...il.com>, netdev@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Ido Schimmel <idosch@...dia.com>,
        Petr Machata <petrm@...dia.com>,
        Nikolay Aleksandrov <razor@...ckwall.org>
Subject: Re: [PATCH net-next] rtnetlink: Honour NLM_F_ECHO flag in rtnl_{new,
 set}link

Hello,

On 22/09/2022 00:56, Jakub Kicinski wrote:
> NEWLINK should have
> reported the allocated handle / ifindex from the start


Could we not return ifindex as a COOKIE when extended ACK is enabled?

However, I'm note sure that it will helps to simplify API. COOKIE are 
not well defined at the best of my knowledge (and very rarely used).

-- 
Florent.

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