I suggest that we add the field "wildcards" in the function "match_to_str" of
"ryu/ryu/lib/ofctl_v1_0.py". That is,
-----
in ryu/ryu/lib/ofctl_v1_0.py:
def match_to_str(m):
return {
'wildcards': m.wildcards, # add it for showing wildcards
'dl_dst': haddr_to_str(m.dl_dst),
...
...
...
'tp_dst': m.tp_dst}
Then we can use the binary form of 'wildcards' to decide which fields are
wildcarded or exactly matched.
________________________________________
From: Liu, Weijie
Sent: Wednesday, May 13, 2015 23:31
To: [email protected]
Subject: RE: [Ryu-devel] [Ryu] Output from ryu.app.ofctl_rest
Because from what I saw, the outputs of "exactly matching dl_vlan as value
zero" and "dl_vlan wildcard matching" are the same! :(
how can I tell the correct meaning from the output of ryu.app.ofctl_rest with
OpenFlow 1.0?
________________________________________
From: Liu, Weijie
Sent: Wednesday, May 13, 2015 23:30
To: Minoru TAKAHASHI
Subject: RE: [Ryu-devel] [Ryu] Output from ryu.app.ofctl_rest
Thanks.
Now comes the question: how can I tell the correct meaning from the output of
ryu.app.ofctl_rest with OpenFlow 1.0?
________________________________________
From: Minoru TAKAHASHI [[email protected]]
Sent: Wednesday, May 13, 2015 23:25
To: Liu, Weijie
Subject: Re: [Ryu-devel] [Ryu] Output from ryu.app.ofctl_rest
Hi,
On 2015年05月14日 12:54, Liu, Weijie wrote:
> Hi, Minoru,
>
> (1) Are you sure about that? I disagree with your answer of "exactly matching
> dl_vlan as value zero is correct".
>
> Because this flow rule is from simple_switch.py; there is no dl_vlan matching
> here. Therefore, I think "It should be considered as a wildcard matching".
Oh, Sorry!
I was talking about OpenFlow1.2 and later.
"It should be considered as a wildcard matching" is correct.
thanks,
>
> (2) Actually, I am using Openflow 1.0. I am not sure whether you are saying
> about other version of Openflow.
>
>
> Thanks a lot.
> Weijie
>
>
> ________________________________________
> From: Minoru TAKAHASHI [[email protected]]
> Sent: Wednesday, May 13, 2015 20:19
> To: Liu, Weijie; [email protected]
> Subject: Re: [Ryu-devel] [Ryu] Output from ryu.app.ofctl_rest
>
> Hi,
>
> On 2015年05月14日 01:44, Liu, Weijie wrote:
>> Hi,
>>
>> I have a question when I read the output of 'GET /stats/flow/1' of
>> ryu.app.ofctl_rest. You know, I want to use this command to see the flow
>> rules in a switch's flow table.
>>
>> My question: In "match", there is a field like "dl_vlan: 0". It can be
>> considered as a wildcard matching; but it can also be considered as exactly
>> matching dl_vlan as value zero.
>>
>> How can I tell which of the two is correct?
>
> "exactly matching dl_vlan as value zero" is correct.
>
> Just for your infomation, how to read of "dl_vlan" field is as follows.
>
> "match": {"dl_vlan": "0-4095"}
> -> Only packets with VLAN tag and VID equal
>
> "match": {"dl_vlan": "0x0000"}
> -> Only packets without a VLAN tag
>
> "match": {"dl_vlan": "0x1000/0x1000"}
> -> Only packets with a VLAN tag regardless of its value
>
> thanks,
>
>>
>> Thanks.
>> --
>> Weijie Liu
>> Department of Computer Science
>> University of Illinois at Urbana-Champaign
>> (217)819-6113
>>
>>
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