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Date:   Sun, 4 Sep 2016 14:27:53 +0200
From:   Jiri Benc <jbenc@...hat.com>
To:     zyjzyj2000@...il.com
Cc:     netdev@...r.kernel.org, pabeni@...hat.com, daniel@...earbox.net,
        pshelar@...ira.com, aduyck@...antis.com,
        hannes@...essinduktion.org, davem@...emloft.net
Subject: Re: [PATCH 1/1] vxlan: make the struct nlattr variable const

On Sat,  3 Sep 2016 22:07:10 +0800, zyjzyj2000@...il.com wrote:
> From: Zhu Yanjun <zyjzyj2000@...il.com>
> 
> The struct nlattr variable should not be changed.

True. But the only caller is vxlan_fdb_parse which doesn't have its tb
parameter const, so what's the point?

Now, the tb parameter of vxlan_fdb_parse could be changed to const.
This again doesn't make much sense without modifying its callers, which
are vxlan_fdb_add and vxlan_fdb_delete. And those are net_device_ops
hooks. Have you considered looking into those (ndo_fdb_*) and turning
the struct nlattr ** to const (that is, if it's possible)?

 Jiri

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