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

[Jan Kiszka]

On 2012-05-24 11:12, Zhi Yong Wu wrote:
> On Thu, May 24, 2012 at 9:30 PM, Jan Kiszka <address@hidden> wrote:
>> On 2012-05-24 09:27, Zhi Yong Wu wrote:
>>> On Thu, May 24, 2012 at 8:09 PM, Jan Kiszka <address@hidden> wrote:
>>>> On 2012-05-23 23:42, Zhi Yong Wu wrote:
>>>>> On Wed, May 23, 2012 at 11:41 PM, Jan Kiszka <address@hidden> wrote:
>>>>>> On 2012-05-23 12:14, address@hidden wrote:
>>>>>>> From: Zhi Yong Wu <address@hidden>
>>>>>>>
>>>>>>> Signed-off-by: Zhi Yong Wu <address@hidden>
>>>>>>> ---
>>>>>>>  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.
>>> Please see below.
>>>>
>>>>>>
>>>>>> 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: ...
>>> It is completely wrong.
>>
>> (Note: my example is not a different representation of yours, it's a
>> different setup).
> Sorry, i don't understand what the benefit for your layout is? And we

To see at one glance which peers are connected via a hub with eachother.

> can not see which hub port peers with which NIC driver or network
> backend.

What is the benefit of printing the port number? Is it part of the
user-visible interface? Does the port number make any difference for the
attached peer?

Jan

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