netdev - Re: [iproute2] iproute2: Allow 'ip addr flush' to loop more than 10 times.

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Message-Id: <20100629.100226.235686154.davem@davemloft.net>
Date:	Tue, 29 Jun 2010 10:02:26 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	greearb@...delatech.com
Cc:	greearb@...il.com, netdev@...r.kernel.org
Subject: Re: [iproute2] iproute2: Allow 'ip addr flush' to loop more than
 10 times.

From: Ben Greear <greearb@...delatech.com>
Date: Tue, 29 Jun 2010 08:10:43 -0700

> If I understand your proposal properly, this would seem to be
> somewhat O(N^2) if we have large numbers of addresses, and I'm
> hoping to support thousands of IPs with decent performance.

I am not modifying the computational complexity or cost of the
operation at all.

I'm just changing under what circumstances it gives up.

> What do you think about improving the kernel side so that we can send
> a single netlink msg to delete all addresses on an interface, and just
> let the kernel do the looping/locking needed to make it happen?

I think the current scheme isn't that bad.
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