netdev - Re: [RFC] should we care of COMPAT mode in bridge ?

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Date:	Tue, 7 Jun 2011 16:51:34 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	David Miller <davem@...emloft.net>
Cc:	eric.dumazet@...il.com, netdev@...r.kernel.org
Subject: Re: [RFC] should we care of COMPAT mode in bridge ?

On Mon, 06 Jun 2011 13:03:09 -0700 (PDT)
David Miller <davem@...emloft.net> wrote:

> From: Eric Dumazet <eric.dumazet@...il.com>
> Date: Mon, 06 Jun 2011 21:45:40 +0200
> 
> > While trying Alexander Holler patch, I found a 32bit brctl program was
> > not able to work on a 64bit kernel. So I had to switch to another
> > machine for my tests.
> > 
> > brctl addbr mybridge
> > ->
> > socket(PF_FILE, SOCK_STREAM, 0)         = 3
> > ioctl(3, SIOCSIFBR, 0xffd509c0)         = -1 EINVAL (Invalid argument)
> > 
> > Should we care or not ?
> 
> I think we should make an effort to fix this.

The problem is that most of the other ioctl's won't work because of use of
SIOCDEVPRIVATE.
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