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Re: [Qemu-devel] [RFC PATCH] net/net: Record usage status of mac address

From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [RFC PATCH] net/net: Record usage status of mac address
Date: Tue, 26 May 2015 11:08:12 +0100
User-agent: Mutt/1.5.23 (2014-03-12)

On Thu, May 21, 2015 at 05:44:48PM +0800, Shannon Zhao wrote:
> From: Shannon Zhao <address@hidden>
> Currently QEMU dynamically generates mac address for the NIC which
> doesn't specify the mac address. But when we hotplug a NIC without
> specifying mac address, the mac address will increase for the same NIC
> along with hotplug and hot-unplug, and at last it will overflow. And if
> we codeplug one NIC with mac address e.g. "52:54:00:12:34:56", then
> hotplug one NIC without specifying mac address and the mac address of
> the hotplugged NIC is duplicate of "52:54:00:12:34:56".
> This patch add a mac_table to record the usage status and free the mac
> address when the NIC is unrealized.
> Signed-off-by: Shannon Zhao <address@hidden>
> Signed-off-by: Shannon Zhao <address@hidden>
> ---
>  net/net.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++----
>  1 file changed, 55 insertions(+), 4 deletions(-)

Thanks, applied to my net tree:


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