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Date:	Wed, 9 Oct 2013 18:24:08 -0700
From:	Jesse Gross <>
To:	Alexei Starovoitov <>
Cc:	"David S. Miller" <>,
	Pravin B Shelar <>,
	Jiri Pirko <>,
	"" <>,
	netdev <>
Subject: Re: [PATCH net-next] openvswitch: fix vport-netdev unregister

On Tue, Oct 8, 2013 at 8:07 PM, Alexei Starovoitov <> wrote:
> The combination of two commits
> commit 8e4e1713e4
> ("openvswitch: Simplify datapath locking.")
> and
> commit 2537b4dd0a
> ("openvswitch:: link upper device for port devices")
> introduced a bug where upper_dev wasn't unlinked upon
> netdev_unregister notification
> The following steps:
>   modprobe openvswitch
>   ovs-dpctl add-dp test
>   ip tuntap add dev tap1 mode tap
>   ovs-dpctl add-if test tap1
>   ip tuntap del dev tap1 mode tap
> are causing multiple warnings:


Hmm, you are right. Pravin mentioned some concerns about layering with
this patch so I believe he's trying to think of a way to minimize
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