Re: [PATCH][ATM] use rtnl_{lock,unlock} during device operations (take 2)

From: David S. Miller (davem@redhat.com)
Date: Fri Jun 06 2003 - 10:28:02 EST


   From: Werner Almesberger <wa@almesberger.net>
   Date: Fri, 6 Jun 2003 12:26:16 -0300

   David S. Miller wrote:
> But regardless I should be able to yank an ATM device out of the
> kernel (unregistering it) even if there are a thousand VCC's attached
> to it.
   
   Why ? A VCC is more like a network interface than a TCP
   connection.
   
It's more like an IP tunnel and a route, granted. And those are
similarly configured, and to me the same rules apply.
   
   Removing an ATM device while there are open VCCs isn't a lot
   more useful than removing a telephone while there is still a
   call in progress :-)
   
It's like rmmod'ing TCP while you have TCP connections.
And it's like unregistering IP tunnels while you still have
routes going over them, the routes just get deleted.

And frankly I see absolutely NOTHING wrong with doing these
sorts of things.
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