Thanks a lot for your ligthting fast answer. I am not confused anymore. You
are the man. Best wishes Edison.
Em 9 de jul de 2017 21:26, "Iwase Yusuke" <iwase.yusu...@gmail.com>
escreveu:
> Hi Edison,
>
>
> On 2017年07月09日 09:31, Edison Albuquerque wrote:
>
>> Hi.
>> I wrote a simple code to send a packet through the switch.
>> I caught the switch datapath from FeaturesReply message and from datapath
>> I found the ofproto and parser, which is openflow 1.3;
>> But when I print the message the controller is sending out, the common
>> header shows None to all it's fields as follows:
>>
>> printing:
>> out = parser.OFPPacketOut(datapath=datapath, buffer_id=buffer_id,
>> in_port=in_port, actions=actions, data=None)
>>
>> shows:
>> version=None,msg_type=None,msg_len=None,xid=None,OFPPacketOu
>> t(actions=[OFPActionOutput(len=16,max_len=65509,port=3,
>> type=0)],actions_len=0,buffer_id=4294967295,data=None,in_port=1)
>>
>> Please help me understand why is that.
>>
>
> For the header fields in OFP messages, Ryu will fill them when serializing
> messages.
> You can see these filed after serialization.
>
> $ git diff
> diff --git a/ryu/app/simple_switch_13.py b/ryu/app/simple_switch_13.py
> index 3e7c598..8b66f18 100644
> --- a/ryu/app/simple_switch_13.py
> +++ b/ryu/app/simple_switch_13.py
> @@ -61,7 +61,11 @@ class SimpleSwitch13(app_manager.RyuApp):
> else:
> mod = parser.OFPFlowMod(datapath=datapath, priority=priority,
> match=match, instructions=inst)
> +
> + self.logger.info('Before: %s', mod)
> datapath.send_msg(mod)
> + # Message should be serialized in datapath.send_msg()
> + self.logger.info('After: %s', mod)
>
> @set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
> def _packet_in_handler(self, ev):
>
>
> $ ryu-manager ryu/app/simple_switch_13.py
> ...(snip)...
> Before: version=None,msg_type=None,msg_len=None,xid=None,OFPFlowMod(
> buffer_id=4294967295,command=0,cookie=0,cookie_mask=0,
> flags=0,hard_timeout=0,idle_timeout=0,instructions=[OFPIns
> tructionActions(actions=[OFPActionOutput(len=16,max_len
> =65535,port=4294967293,type=0)],type=4)],match=OFPMatch(oxm_
> fields={}),out_group=0,out_port=0,priority=0,table_id=0)
> After: version=0x4,msg_type=0xe,msg_len=0x50,xid=0x3b00d2f8,OFPFlow
> Mod(buffer_id=4294967295,command=0,cookie=0,cookie_
> mask=0,flags=0,hard_timeout=0,idle_timeout=0,instructions=[O
> FPInstructionActions(actions=[OFPActionOutput(len=16,max_len
> =65535,port=4294967293,type=0)],len=24,type=4)],match=
> OFPMatch(oxm_fields={}),out_group=0,out_port=0,priority=0,table_id=0)
> ...(snip)...
>
>
> Thanks,
> Iwase
>
>
>> Tks, Edison.
>> --
>> /_Todos querem um mundo melhor. Poucos colaboram.
>> _/
>>
>> Prof. Edison de Queiroz Albuquerque, BSc, Msc, Dr.
>> Adjunto da Escola Politécnica de Pernambuco, Universidade de Pernambuco
>> (POLI/UPE)
>> Professor do Curso de Engenharia de Computação
>> Líder do Grupo de Pesquisa em Protocolos de Redes de Computadores
>> Membro do IEEE (ComSoc), do SBrT, do IECOM e da APEET
>>
>> Universidade de Pernambuco/Escola Politécnica de Pernambuco
>> Rua Benfica, 455 (Bl. 'C' 2. andar) - Bairro: Madalena
>> CEP 50720-001 - Recife, Pernambuco - Brasil
>> Fone: +55 81 3184-7542 - Fax: +55 81 3184-7581
>>
>>
>>
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>>
>>
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>>
>>
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