netdev - Re: [Patch net-next 0/3] net: forbid net devices named "all" "default" or "config"

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Message-Id: <20140724.233254.1343189609913837881.davem@davemloft.net>
Date:	Thu, 24 Jul 2014 23:32:54 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	xiyou.wangcong@...il.com
Cc:	netdev@...r.kernel.org, stephane.chazelas@...il.com
Subject: Re: [Patch net-next 0/3] net: forbid net devices named "all"
 "default" or "config"

From: Cong Wang <xiyou.wangcong@...il.com>
Date: Wed, 23 Jul 2014 15:17:29 -0700

> /proc/sys/net/ipv[46]/conf/<dev> could conflict with
> /proc/sys/net/ipv[46]/conf/(all|default). And /proc/net/vlan/<dev>
> could conflict with /proc/net/vlan/config. Besides kernel warnings,
> undefined behavior such as duplicated proc files also appears, therefore
> we should forbid these names.
> 
> Cong Wang (3):
>   ipv4: fail early when creating netdev named all or default
>   ipv6: fail early when creating netdev named all or default
>   vlan: fail early when creating netdev named config

As suggested, please make a common helper for ipv4/ipv6, the restrictions
are identical currently.
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