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Hi Shuoling Deng:
It is necessary to parse every packet-in message if you want controller be
a simple dhcp server.
Hi alyosha:
That's strange, because udp parser will check if it's a dhcp packet and
parser it......
maybe it is a bug for parsing udp packet.
https://github.com/osrg/ryu/blob/master/ryu/lib/packet/udp.py#L54
2015-10-07 20:41 GMT+08:00 alyosha <tan...@gmail.com>:
> Thank you for comments, Mr Shuoling Deng and Mr Yi Tseng.
>
> >> it looks like parse every PAKCET-IN ?
> would this cause heavy load to Controller.
>
> As you pointed out, this application parses all PACKET-IN to handle DHCP
> Packet.
> Bit this is a "simple" dhcp server.
> So this application shoud be used in a small network.
> And you shoud set enough flowentries to avoid PACKET-IN.
>
>
> >> dhcp_packet = pkt.get_protocol(dhcp.dhcp)
> At first I tried.
> But, DHCP Packet is parsed into buf[msg._MIN_LEN:total_length] in
> ryu.lib.packet.udp.
> Not DHCP Class.
> So, it did not work.
>
> Best regards.
>
>
> On 2015/10/07 17:48, Yi Tseng wrote:
>
> Hello
>
> Maybe you can try
>
>
> dhcp_packet = pkt.get_protocol(dhcp.dhcp)
>
> if not dhcp_packet:
>
> # not dhcp packet
>
> return
>
>
> # ... handling dhcp packet
>
>
> 2015-10-07 15:40 GMT+08:00 Shuoling Deng <mr.dengshuol...@gmail.com>:
>
>> it looks like parse every PAKCET-IN ?
>>
>> would this cause heavy load to Controller.
>>
>>
>> On Wed, Oct 7, 2015 at 12:52 AM, alyosha < <tan...@gmail.com>
>> tan...@gmail.com> wrote:
>>
>>> Nice to e-meet you. My name is Okano Yuu.
>>> I created a new ryu application, simple_dhcp_server for DHCPServer.
>>>
>>> I tested this application with 2 VMs, and this application worked well.
>>> VM1... DHCPClient
>>> VM2... DHCPServer(Ryu & OpenVSwitch)
>>>
>>> I set one flowentry on OpenVSwitch "ovs-ofctl add-flow br-test
>>> udp,actions=Controller".
>>>
>>> This application supports pep8.
>>> Check this code and comments please.
>>>
>>> Thanks!
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> Ryu-devel mailing list
>>> Ryu-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/ryu-devel
>>>
>>>
>>
>>
>> --
>> Shuoling Deng
>> Dept. of Computer Science and Technology
>> Xi'an Jiaotong University
>> Xi'an, 710049, P.R. China
>>
>>
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>
>
> --
> Yi Tseng (a.k.a Takeshi)
> Taiwan National Chiao Tung University
> Department of Computer Science
> W2CNLab
>
> http://blog.takeshi.tw
>
>
>
--
Yi Tseng (a.k.a Takeshi)
Taiwan National Chiao Tung University
Department of Computer Science
W2CNLab
http://blog.takeshi.tw
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