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Date:   Wed, 22 May 2019 12:07:48 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     maximmi@...lanox.com
Cc:     jakub.kicinski@...ronome.com, kuznet@....inr.ac.ru,
        yoshfuji@...ux-ipv6.org, netdev@...r.kernel.org,
        leonro@...lanox.com
Subject: Re: [PATCH net v2] Validate required parameters in
 inet6_validate_link_af

From: Maxim Mikityanskiy <maximmi@...lanox.com>
Date: Tue, 21 May 2019 06:40:04 +0000

> inet6_set_link_af requires that at least one of IFLA_INET6_TOKEN or
> IFLA_INET6_ADDR_GET_MODE is passed. If none of them is passed, it
> returns -EINVAL, which may cause do_setlink() to fail in the middle of
> processing other commands and give the following warning message:
> 
>   A link change request failed with some changes committed already.
>   Interface eth0 may have been left with an inconsistent configuration,
>   please check.
> 
> Check the presence of at least one of them in inet6_validate_link_af to
> detect invalid parameters at an early stage, before do_setlink does
> anything. Also validate the address generation mode at an early stage.
> 
> Signed-off-by: Maxim Mikityanskiy <maximmi@...lanox.com>

Applied, thank you.

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