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From: yzhu1 <Yanjun.Zhu@windriver.com>
To: David Ahern <dsahern@gmail.com>,
	Stephen Hemminger <stephen@networkplumber.org>
Cc: netdev <netdev@vger.kernel.org>,
	"Wu, Kuaikuai" <Kuaikuai.Wu@windriver.com>,
	"Tao, Yue" <Yue.Tao@windriver.com>
Subject: Re: If bridge have no sub-interfaces, it's status may be still with 'RUNNING'
Date: Wed, 25 Feb 2015 13:29:47 +0800	[thread overview]
Message-ID: <54ED5DCB.6020702@windriver.com> (raw)
In-Reply-To: <54ED4E47.9070304@gmail.com>

On 02/25/2015 12:23 PM, David Ahern wrote:
> On 2/24/15 7:55 PM, yzhu1 wrote:
>> Hi, Stephen && David
>>
>> Any update?
>
> As I mentioned in my last response I see no problem with the existing 
> behavior -- 3.18, 3.19 and 4.0-rc1. With all of them the bridge stays 
> in the running state after all interfaces are removed.
>
> David
>
>
>
Hi, David

I made tests on kernel 3.19-rc7.

1. brctl addbr br0

2. ifconfig br0 up

3. ifconfig br0 (br0's status is with 'RUNNING')

br0       Link encap:Ethernet  HWaddr 0a:70:0b:06:34:8f
           inet6 addr: fe80::870:bff:fe06:348f/64 Scope:Link
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
           TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:0 (0.0 B)  TX bytes:5054 (5.0 KB)

4. brctl addif br0 eth1

5. brctl delif br0 eth1

6. ifconfig br0 (br0's status is without 'RUNNING')

br0       Link encap:Ethernet  HWaddr 00:00:00:00:00:00
           inet6 addr: fe80::870:bff:fe06:348f/64 Scope:Link
           UP BROADCAST MULTICAST  MTU:1500  Metric:1
           RX packets:328 errors:0 dropped:5 overruns:0 frame:0
           TX packets:19 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:39997 (39.9 KB)  TX bytes:5760 (5.7 KB)

Please compare with the outputs of step 3 and step 6, we can find the 
difference.

uname:

Linux wind-virtual-machine 3.19.0-rc7 #2 SMP Wed Jan 28 18:36:44 CST 
2015 x86_64 x86_64 x86_64 GNU/Linux

So I think we should apply the latest patch to make consistent.

Any reply is appreciated.

Zhu Yanjun

  reply	other threads:[~2015-02-25  5:29 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-13  9:57 If bridge have no sub-interfaces, it's status may be still with 'RUNNING' yzhu1
2015-02-13 10:00 ` yzhu1
2015-02-13 18:30 ` Stephen Hemminger
2015-02-15  7:49   ` Wu, Kuaikuai
2015-02-16  4:55   ` yzhu1
2015-02-16 15:47     ` David Ahern
2015-02-16 16:51       ` Stephen Hemminger
2015-02-17 16:14         ` Zhu, Yanjun
2015-02-25  2:55           ` yzhu1
2015-02-25  4:23             ` David Ahern
2015-02-25  5:29               ` yzhu1 [this message]
2015-02-16 16:52     ` Stephen Hemminger
2015-03-10  6:07     ` yzhu1

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