From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Wed, 18 May 2011 08:39:48 -0700
From: Stephen Hemminger <shemminger@vyatta.com>
Message-ID: <20110518083948.261ded68@nehalam>
In-Reply-To: <4DD3E38C.30609@candelatech.com>
References: <20110518081718.0b1fc390@nehalam> <4DD3E38C.30609@candelatech.com>
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Subject: Re: [Bridge] [PATCH net-next] bridge: add notification over netlink
 when STP changes state
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To: Ben Greear <greearb@candelatech.com>
Cc: netdev@vger.kernel.org, bridge@linux-foundation.org, David Miller <davem@davemloft.net>

On Wed, 18 May 2011 08:19:40 -0700
Ben Greear <greearb@candelatech.com> wrote:

> On 05/18/2011 08:17 AM, Stephen Hemminger wrote:
> > The first netlink code in the bridge module was to notify
> > user space implementations of Spanning Tree Protocol about
> > new ports. It did not handle the case of kernel mode STP
> > changing states which could be useful for monitoring.
> >
> > This patch causes RTM_NEWLINK message to occur on kernel
> > transitions. It does not send message if request was from user
> > space STP, since that would cause reflection and break existing
> > API.
> 
> So one app monitoring the system won't get updates if another
> app makes changes?
> 
> Ben

For now, yes. Just don't want to break any existing users
which is more important.

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