From: David Miller <davem@davemloft.net>
To: helge.hafting@aitel.hist.no
Cc: shemminger@linux-foundation.org, jengelh@computergmbh.de,
olecom@flower.upol.cz, jbeulich@novell.com,
bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: why network devices don't do reference counting?
Date: Thu, 27 Sep 2007 12:01:14 -0700 (PDT) [thread overview]
Message-ID: <20070927.120114.95884344.davem@davemloft.net> (raw)
In-Reply-To: <46FB99EF.4020806@aitel.hist.no>
From: Helge Hafting <helge.hafting@aitel.hist.no>
Date: Thu, 27 Sep 2007 13:54:23 +0200
> Wouldn't it be enough to down all the interfaces and close all the sockets?
> No need to bring down every app.
And there are routes, and neighbour cache entries, and all sorts
of external references to the stack. For example, if a packet
gets stuck in a device because the link just went down, that
can hold references to the ipv6 module from several angles.
But you have to add code to actually keep track of all of these
references and there is no such code in the ipv6 module at all
and it's a nontrivial time consuming job to implement it.
next prev parent reply other threads:[~2007-09-27 19:01 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-26 7:53 [PATCH] Module use count must be updated as bridges are created/destroyed Jan Beulich
2007-09-26 15:37 ` Stephen Hemminger
2007-09-26 21:06 ` why network devices don't do reference counting? (Re: [PATCH] Module use count must be updated as bridges are created/destroyed) Oleg Verych
2007-09-26 21:06 ` Stephen Hemminger
2007-09-26 22:18 ` Jan Engelhardt
2007-09-26 22:33 ` Stephen Hemminger
2007-09-26 22:57 ` why network devices don't do reference counting? David Miller
2007-09-27 11:54 ` why network devices don't do reference counting? (Re: [PATCH] Module use count must be updated as bridges are created/destroyed) Helge Hafting
2007-09-27 14:51 ` Stephen Hemminger
2007-09-27 14:55 ` Jan Engelhardt
2007-09-27 19:15 ` why network devices don't do reference counting? David Miller
2007-09-27 19:01 ` David Miller [this message]
[not found] ` <46FAA013.76E4.0078.0@novell.com>
[not found] ` <20070926101252.3ccbb987@freepuppy.rosehill>
2007-09-27 7:40 ` [PATCH] Module use count must be updated as bridges are created/destroyed Jan Beulich
2007-09-27 14:48 ` Stephen Hemminger
2007-09-27 15:05 ` Jan Beulich
2007-09-28 5:37 ` Herbert Xu
2007-09-28 18:11 ` Stephen Hemminger
2007-09-29 0:55 ` Herbert Xu
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