netdev - Re: [RFC] Enhance dev_ioctl to return <hwaddr>:<if_name::if

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Message-ID: <AANLkTilhSSh1kE5ZfqVDbBJJWdP3hDcXRffpQwdyMQua@mail.gmail.com>
Date:	Fri, 16 Jul 2010 15:35:48 -0400
From:	Chetan Loke <chetanloke@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	shemminger@...tta.com, Chetan.Loke@...scout.com,
	bhutchings@...arflare.com, netdev@...r.kernel.org
Subject: Re: [RFC] Enhance dev_ioctl to return <hwaddr>:<if_name::if_index> 
	mapping

On Fri, Jul 16, 2010 at 3:33 PM, David Miller <davem@...emloft.net> wrote:
> From: Chetan Loke <chetanloke@...il.com>
> Date: Fri, 16 Jul 2010 15:29:06 -0400
>
>> On Fri, Jul 16, 2010 at 2:31 PM, Stephen Hemminger
>> <shemminger@...tta.com> wrote:
>>> Simple way:
>>>   Use SIOCGIFCONF to get list of interfaces
>>>   Use SIOCGIFHWADDR to read device addresss
>>>
>> And interfaces that don't have IP's?
>
> There is no requirement that an interface have configured IP addresses
> in order to use those ioctl()'s.
>
> You simply create an arbitrary socket, and use the resulting 'fd' to
> run the ioctl's mentioned to fetch information about any and all
> interfaces which exist in the system.
>

Yes, I opened a socket and then sent the IFCONF ioctl.What I meant was
that interfaces that didn't have an IP weren't returned.
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