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

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Message-ID: <20100804140012.577b2195@nehalam>
Date:	Wed, 4 Aug 2010 14:00:12 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	greearb@...il.com
Cc:	netdev@...r.kernel.org, Ben Greear <greearb@...delatech.com>
Subject: Re: [iproute2] iproute2:  Allow 'ip addr flush' to loop more than
 10 times.

On Mon, 28 Jun 2010 22:55:59 -0700
greearb@...il.com wrote:

> From: Ben Greear <greearb@...delatech.com>
> 
> The default remains at 10 for backwards compatibility.
> 
> For instance:
>  # ip addr flush dev eth2
>  *** Flush remains incomplete after 10 rounds. ***
>  # ip -l 20 addr flush dev eth2
>  *** Flush remains incomplete after 20 rounds. ***
>  # ip -loops 0 addr flush dev eth2
>  #
> 
> This is useful for getting rid of large numbers of IP
> addresses in scripts.
> 
> Signed-off-by: Ben Greear <greearb@...delatech.com>

The current userspace driven flush behavior is crap.
There really should be an atomic flush netlink message
with kernel support.
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