netdev - Re: [PATCH] net: fix "queues" uevent between network namespaces

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Date:	Fri, 17 Jan 2014 09:47:15 +0800
From:	chenweilong <chenweilong@...wei.com>
To:	Greg KH <gregkh@...uxfoundation.org>
CC:	<davem@...emloft.net>, <netdev@...r.kernel.org>
Subject: Re: [PATCH] net: fix "queues" uevent between network namespaces

On 2014/1/17 0:19, Greg KH wrote:
> On Thu, Jan 16, 2014 at 05:24:31PM +0800, Chen Weilong wrote:
>> From: Weilong Chen <chenweilong@...wei.com>
>>
>> When I create a new namespace with 'ip netns add net0', or add/remove
>> new links in a namespace with 'ip link add/delete type veth', rx/tx
>> queues events can be got in all namespaces. That is because rx/tx queue
>> ktypes do not have namespace support, and their kobj parents are setted to
>> NULL. This patch is to fix it.
>>
>> Reported-by: Libo Chen <chenlibo@...wei.com>
>> Signed-off-by: Libo Chen <chenlibo@...wei.com>
>> Signed-off-by: Weilong Chen <chenweilong@...wei.com>
>> ---
>>  lib/kobject_uevent.c | 10 ++++++++--
>>  net/core/net-sysfs.c | 26 ++++++++++++++++++++++++++
>>  2 files changed, 34 insertions(+), 2 deletions(-)
> 
> I can't test this, but it looks good to me:
> 
> Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> 
> 

Hi,

Here's detail about the test, I hope it can be useful:
step1: create two netns
	suse11-sp3:~ # ip netns add net0
	suse11-sp3:~ # ip netns add net1
	suse11-sp3:~ # ip netns list
	net1
	net0
setp2: monitor udev events
	Term1:
	suse11-sp3:~ # ip netns exec net0 udevadm monitor
	Term2:
	suse11-sp3:~ # ip netns exec net1 udevadm monitor
setp3: add link to net0
	suse11-sp3:~ # ip netns exec net0 ip link add type veth

Then you'll see the below events in net0 and net1.
KERNEL[1389972662.984988] add      /devices/virtual/net/veth0/queues/rx-0 (queues)
KERNEL[1389972662.985008] add      /devices/virtual/net/veth0/queues/tx-0 (queues)
KERNEL[1389972662.985234] add      /devices/virtual/net/veth1/queues/rx-0 (queues)
KERNEL[1389972662.985247] add      /devices/virtual/net/veth1/queues/tx-0 (queues)



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