netdev - Re: [PATCH] ipv6 addrconf: Fix addrconf_ifid

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Message-ID: <20130308085339.GA792@x61s.8.8.8.8>
Date:	Fri, 8 Mar 2013 09:53:40 +0100
From:	Alexander Aring <alex.aring@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	eric.dumazet@...il.com, bhutchings@...arflare.com,
	kuznet@....inr.ac.ru, jmorris@...ei.org, yoshfuji@...ux-ipv6.org,
	linux-zigbee-devel@...ts.sourceforge.net, netdev@...r.kernel.org
Subject: Re: [PATCH] ipv6 addrconf: Fix addrconf_ifid_eui64 of 802.15.4
 devices

On Thu, Mar 07, 2013 at 06:17:51PM -0500, David Miller wrote:
> From: Eric Dumazet <eric.dumazet@...il.com>
> Date: Thu, 07 Mar 2013 14:57:05 -0800
> 
> > On Thu, 2013-03-07 at 22:41 +0000, Ben Hutchings wrote:
> >> On Thu, 2013-03-07 at 21:13 +0100, Alexander Aring wrote:
> >> > The function addrconf_ifid_eui64 will copy eui into dev->dev_addr.
> >> > We need first to manipulate eui[0] before we call memcpy afterwards.
> >> 
> >> memcpy() does not work that way.
> >> 
> >> > Broken since commit:
> >> > 5e98a36ed4bf6ea396170e3af0dd4fcbe51d772f
> >> > 
> >> > Since this commit I got many trouble with the ieee802154 stack.
> >> 
> >> Your change is effectively reverting that commit.
> > 
> > Reverting the commit seems the solution ;)
> 
> So Yoshifuji HIDEAKI and Alexander need to work out what is happening
> here.

Ok, I will try that. Maybe somebody with a another 802.15.4 device with
6lowpan on linux-zigbee-devel mailinglist can confirm that?

I have a at86rf231 device.

Alex
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