linux-kernel - Re: [net-next v2 1/2] bonding: netlink error message support for options

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Date:   Wed, 08 Jun 2022 11:52:55 -0700
From:   Jay Vosburgh <jay.vosburgh@...onical.com>
To:     Jonathan Toppins <jtoppins@...hat.com>
cc:     netdev@...r.kernel.org, Veaceslav Falico <vfalico@...il.com>,
        Andy Gospodarek <andy@...yhouse.net>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [net-next v2 1/2] bonding: netlink error message support for options

Jonathan Toppins <jtoppins@...hat.com> wrote:

>Add support for reporting errors via extack in both bond_newlink
>and bond_changelink.
>
>Instead of having to look in the kernel log for why an option was not
>correct just report the error to the user via the extack variable.
>
>What is currently reported today:
>  ip link add bond0 type bond
>  ip link set bond0 up
>  ip link set bond0 type bond mode 4
> RTNETLINK answers: Device or resource busy
>
>After this change:
>  ip link add bond0 type bond
>  ip link set bond0 up
>  ip link set bond0 type bond mode 4
> Error: unable to set option because the bond is up.
>
>Signed-off-by: Jonathan Toppins <jtoppins@...hat.com>

Acked-by: Jay Vosburgh <jay.vosburgh@...onical.com>