netdev - Re: [Patch net-next] vxlan: do not use vxlan

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Message-ID: <52D8B17A.6030301@windriver.com>
Date:	Fri, 17 Jan 2014 12:28:42 +0800
From:	Fan Du <fan.du@...driver.com>
To:	Cong Wang <xiyou.wangcong@...il.com>
CC:	<netdev@...r.kernel.org>, Daniel Borkmann <dborkman@...hat.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [Patch net-next] vxlan: do not use vxlan_net before checking
 event type

Hi, Cong

On 2014年01月17日 12:20, Cong Wang wrote:
> When cloning a netns, loopback device will be registered
> and therefore an event will be notified. Of course
> vxlan doesn't care about it, therefore should check if it
> is NETDEV_UNREGISTER before getting the vxlan_net struct.
> Otherwise, vxlan_net is probably not initialized yet at
> this point.

I'm bit new to vxlan, but in vxlan_init_module

register_pernet_device is called before register_netdevice_notifier.
By my understanding once register_pernet_device is called,
then subsequent vxlan_notifier_block callback see a valid vxlan_net_id.
I mean execute vxlan_notifier_block callback indicates a valid vxlan_net_id,
or I miss somewhere else.


-- 
浮沉随浪只记今朝笑

--fan
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