From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcel Holtmann <marcel@holtmann.org>
Date: Tue, 11 Aug 2009 22:17:47 +0000
Subject: Re: link up and down
Message-Id: <1250029067.30166.34.camel@localhost.localdomain>
List-Id: <linux-hotplug.vger.kernel.org>
References: <cfeab66d0908110935v38566a5awc48edbffd62053f@mail.gmail.com>
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To: linux-hotplug@vger.kernel.org

Hi Greg,

> > the linux kernel is running on an embedded box ... so if i can achieve
> > this using hotplug2 , i can save a lot of flash by not intstalling
> > ethtool ..
> > is there any way
> 
> You are really using hotplug2 for a device?  Are you insane?  That's
> very old, unsupported, and buggy code that was a totally bad idea when I
> wrote it.
> 
> Please do not use it, it will break and cause bad things to happen.
> 
> And no, there are no hotplug events for link up/down, use ethtool like
> it is designed for.

actually there was a patch for KOBJ_CHANGE events when network interface
flags change, but it never got merged upstream.

Also just using RTNL and listening for IFF_LOWER_UP is way simpler than
going through uevents.

Regards

Marcel