netdev - Re: [PATCH 2/2] ipv4: Properly purge netdev references on uncached routes.

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Message-ID: <20120731154455.2acf97a8@nehalam.linuxnetplumber.net>
Date:	Tue, 31 Jul 2012 15:44:55 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 2/2] ipv4: Properly purge netdev references on uncached
 routes.

On Tue, 31 Jul 2012 15:20:33 -0700 (PDT)
David Miller <davem@...emloft.net> wrote:

> 
> When a device is unregistered, we have to purge all of the
> references to it that may exist in the entire system.
> 
> If a route is uncached, we currently have no way of accomplishing
> this.
> 
> So create a global list that is scanned when a network device goes
> down.  This mirrors the logic in net/core/dst.c's dst_ifdown().
> 
> Signed-off-by: David S. Miller <davem@...emloft.net>

What about systems will full 1M route table?
I wonder if doing rbtree here would make the search faster?

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