Re: [PATCH v2 13/15] net: Remove obsolete vlan info

Zhi Yong Wu
2012-05-24T12:34:07Z

On Thu, May 24, 2012 at 8:09 PM, Jan Kiszka <jan.kiszka@siemens.com> wrote:
> On 2012-05-23 23:42, Zhi Yong Wu wrote:
>> On Wed, May 23, 2012 at 11:41 PM, Jan Kiszka <jan.kiszka@siemens.com> wrote:
>>> On 2012-05-23 12:14, zwu.kernel@gmail.com wrote:
>>>> From: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
>>>>
>>>> Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
>>>> ---
>>>>  net.c |    1 -
>>>>  1 files changed, 0 insertions(+), 1 deletions(-)
>>>>
>>>> diff --git a/net.c b/net.c
>>>> index 61dc28d..8c8e703 100644
>>>> --- a/net.c
>>>> +++ b/net.c
>>>> @@ -1079,7 +1079,6 @@ void do_info_network(Monitor *mon)
>>>>      NetClientState *nc, *peer;
>>>>      net_client_type type;
>>>>
>>>> -    monitor_printf(mon, "Devices not on any VLAN:\n");
>>>>      QTAILQ_FOREACH(nc, &net_clients, next) {
>>>>          peer = nc->peer;
>>>>          type = nc->info->type;
>>>
>>> This looks suspicious - or the patch description is improvable. This is
>>> really just about removing that headline? And what about the indention
>>> of the lines printed afterward?
>> As you have known, vlan concept is replaced with hub. So i think that
>> it is more reasonable to remove this in monitor.
>
> That is true. But the output formatting is still improvable.
>
>>>
>>> It also leads me to the question how hub-based networks will be
>>> visualized on "info network", specifically when there are multiple hubs.
>>> Can you provide some more complex example of an info network output?
>>
>> (qemu) info network
>>   virtio-net-pci.0: type=nic,model=virtio-net-pci,macaddr=52:54:00:12:34:56
>>    \ hub0port0: type=(null),
>>   virtio-net-pci.1: type=nic,model=virtio-net-pci,macaddr=52:54:00:12:34:57
>>    \ hub1port0: type=(null),
>> hub 1
>>     port 1 peer user.1
>>     port 0 peer virtio-net-pci.1
>> hub 0
>>     port 1 peer user.0
>>     port 0 peer virtio-net-pci.0
>
> What about a layout like this:
>
> hub.0
>  \ virtio-net-pci.0: ...
>  \ virtio-net-pci.1: ...
>  \ user.0: ...
> hub.1
>  \ e1000.0: ...
> e1000.1: ...
>  \ user.1: ...
For this output, we can't find which port peers with which emulated
NIC or network backend.

>
> ie. printing the hubs first, listing all the peers of their ports
> underneath them. Also, things like "type=(null)" should be avoided.
For this info, we can simply remove it.
>
> Jan
>
> --
> Siemens AG, Corporate Technology, CT T DE IT 1
> Corporate Competence Center Embedded Linux

--
Regards,

Zhi Yong Wu