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Message-ID: <34a51d38.e7c87.1898b8a81b6.Coremail.linma@zju.edu.cn>
Date:   Tue, 25 Jul 2023 13:34:17 +0800 (GMT+08:00)
From:   "Lin Ma" <linma@....edu.cn>
To:     "Leon Romanovsky" <leon@...nel.org>
Cc:     "Jakub Kicinski" <kuba@...nel.org>, jgg@...pe.ca,
        markzhang@...dia.com, michaelgur@...dia.com, ohartoov@...dia.com,
        chenzhongjin@...wei.com, yuancan@...wei.com,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] RDMA/nldev: Add length check for
 IFLA_BOND_ARP_IP_TARGET parsing

Hi Leon,

> 
> Right, and this is what bothers me.
> 
> I would more than happy to change nla_for_each_nested() to be something
> like nla_for_each_nested_type(...., sizeof(u32)), which will skip empty
> lines, for code which can't have them.
> 
> Thanks
> 

Well, nla_for_each_nested_type(...., sizeof(u32)) seems good if the nested
attribute is sure to contain only one type of attribute with constant length.
(like the case of RDMA_NLDEV_ATTR_STAT_HWCOUNTERS).

I accept that it is another elegant solution here. But efforts are needed to
make sure if this is true for other cases.

Regards
Lin

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