netdev - Re: [V6 PATCH] virtio-net: send gratuitous packets when needed

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Date:	Tue, 03 Apr 2012 17:49:05 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	jasowang@...hat.com
Cc:	netdev@...r.kernel.org, rusty@...tcorp.com.au, mst@...hat.com,
	linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org, qemu-devel@...gnu.org
Subject: Re: [V6 PATCH] virtio-net: send gratuitous packets when needed

From: Jason Wang <jasowang@...hat.com>
Date: Wed, 28 Mar 2012 13:44:28 +0800

> As hypervior does not have the knowledge of guest network configuration, it's
> better to ask guest to send gratuitous packets when needed.
> 
> Guest tests VIRTIO_NET_S_ANNOUNCE bit during config change interrupt and when it
> is set, a workqueue is scheduled to send gratuitous packet through
> NETDEV_NOTIFY_PEERS. This feature is negotiated through bit
> VIRTIO_NET_F_GUEST_ANNOUNCE.
 ...
> Signed-off-by: Jason Wang <jasowang@...hat.com>

Michael and others, what's the story with this patch?
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