I think the problem may be here:
@classmethod
def parser(cls, datapath, version, msg_type, msg_len, xid, buf):
msg = super(OFPPacketIn, cls).parser(datapath, version, msg_type,
msg_len, xid, buf)
(msg.buffer_id, msg.total_len, msg.reason,
msg.table_id, msg.cookie) = struct.unpack_from(
ofproto.OFP_PACKET_IN_PACK_STR,
msg.buf, ofproto.OFP_HEADER_SIZE)
msg.match = OFPMatch.parser(msg.buf, ofproto.OFP_PACKET_IN_SIZE -
ofproto.OFP_MATCH_SIZE)
match_len = utils.round_up(msg.match.length, 8)
msg.data = msg.buf[(ofproto.OFP_PACKET_IN_SIZE -
ofproto.OFP_MATCH_SIZE + match_len + 2):]
if msg.total_len < len(msg.data):
# discard padding for 8-byte alignment of OFP packet
msg.data = msg.data[:msg.total_len]
return msg
def _serialize_body(self):
msg_pack_into(ofproto.OFP_PACKET_IN_PACK_STR,
self.buf, ofproto.OFP_HEADER_SIZE,
self.buffer_id, self.total_len, self.reason,
self.table_id, self.cookie)
offset = ofproto.OFP_PACKET_IN_SIZE - ofproto.OFP_MATCH_SIZE
match_len = self.match.serialize(self.buf, offset)
if self.data is not None:
self.buf += self.data
The round_up function align the match length to 64bit. But I my serialize_body
method, I have not implemented the align logic. Is that right??
------------------
Distance ????
_____________________________________________________
School of Information and Communication Engineering
Beijing University of Posts and Telecommunications
Beijing 100876, PR China
??????????????????????????????????????????
_____________________________________________________
Mobile Phone:
(+86) 151-1698-3550 Beijing
E-mail:
[email protected]
[email protected]
Homepage:
http://www.muzixing.com
------------------ ???????? ------------------
??????: "Yusuke Iwase";<[email protected]>;
????????: 2015??8??25??(??????) ????1:55
??????: "muzixing.com"<[email protected]>;
????: "ryu-devel"<[email protected]>;
????: Re: [Ryu-devel] ????: Re: LLDP packet parse error: LLDPUnknownFormat
Hi,
On 2015??08??25?? 14:18, muzixing.com wrote:
> I do not mean to send the same packet to another controller.I have to build a
> new lldp packet with self-defined information. What's more, I need to send
> packetIn to controller, just like a switch, so we should use packetin not
> packet out.
Sorry, I misunderstood.
Because Ryu does not have implementation for serializing Packet-In message,
it is difficult to create Packet-In packet data.
Maybe, you need to implement serialize() method into OFPPacketIn class.
Thanks,
Iwase
> Thank you for your reply.
> ---????????---
> ??????:"Yusuke Iwase"<[email protected]>
> ????????:2015??8??25?? ?????? ????1:2
> ??????:"15116983550"<[email protected]>
> ????:"ryu-devel"<[email protected]>
> ????:Re: [Ryu-devel] LLDP packet parse error: LLDPUnknownFormat
> Hi,
> On 2015??08??25?? 12:52, muzixing.com wrote:
>> Hi all,
>> I built an Packet_in packet with LLDP, and send it from a controller to
>> another controller. When I parse the packet, I can get PacketIn packet with
>> data. But the data is Not LLDP packet.
>> When parse data ,I get LLDPUnknownFormat exception. The packet information
>> show below.
>>
>> {'total_len': 87, 'xid': 0, 'msg_type': 10, 'data':
>> '\xc2\x00\x00\x0e\x00\x00\x00\x00\x00\x00\x88\xcc\x02\x16\x07dpid:0000000000000001\x04\x05\x02\x00\x00\x00\x01\x06\x02\x00x\x12\x1b\x07domain_id:0000000000000002\x14\x05\x02\x00\x00\xff\xff\x00\x00',
>> 'msg_len': 135, 'datapath': None, 'buffer_id': 4294967295L, 'reason': 1,
>> 'version': 4, 'table_id': 0, 'cookie': 0, 'buf': <read-only buffer for
>> 0x9dc2a10, size -1, offset 0 at 0x9e60980>, 'match':
>> OFPMatch(oxm_fields={'in_port': 1})}
>> data: 0xc2 0x0 0x0 0xe 0x0 0x0 0x0 0x0 0x0 0x0 0x88 0xcc 0x2 0x16 0x7 0x64
>> 0x70 0x69 0x64 0x3a 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30
>> 0x30 0x30 0x30 0x30 0x31 0x4 0x5 0x2 0x0 0x0 0x0 0x1 0x6 0x2 0x0 0x78 0x12
>> 0x1b 0x7 0x64 0x6f 0x6d 0x61 0x69 0x6e 0x5f 0x69 0x64 0x3a 0x30 0x30 0x30
>> 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x32 0x14 0x5
>> 0x2 0x0 0x0 0xff 0xff 0x0 0x0
>> {'data':
>> '\xc2\x00\x00\x0e\x00\x00\x00\x00\x00\x00\x88\xcc\x02\x16\x07dpid:0000000000000001\x04\x05\x02\x00\x00\x00\x01\x06\x02\x00x\x12\x1b\x07domain_id:0000000000000002\x14\x05\x02\x00\x00\xff\xff\x00\x00',
>> 'protocols':
>> [ethernet(dst='c2:00:00:0e:00:00',ethertype=534,src='00:00:00:00:88:cc'),
>> llc(control=ControlFormatI(pf_bit=0,receive_sequence_number=52,send_sequence_number=56),dsap_addr=7,ssap_addr=100),
>>
>> 'd:0000000000000001\x04\x05\x02\x00\x00\x00\x01\x06\x02\x00x\x12\x1b\x07domain_id:0000000000000002\x14\x05\x02\x00\x00\xff\xff\x00\x00']}
>>
>> We can find out that there is LLC in protocols in protocols.
>> The ethernet type is 534, which is the same with the LLDP chassis_id?? s
>> typelen??534.
> How did you make OFPPacketOut?
> If you want to set Packet-In data into Packet-Out data,
> I think you need to set OFPPacketIn.data, which is raw packet data, into
> OFPPacketOut.data.
> e.g.)
> @set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
> def _packet_in_handler(self, ev):
> msg = ev.msg
> data = msg.data
> ...
> ...
> out = parser.OFPPacketOut(..., data=data) # set OFPPacketIn.data into
> OFPPacketOut.data
> datapath.send_msg(out)
> Thanks,
> Iwase
>>
>> What should I do?
>>
>> Thank you for your time.
>>
>>
>> ------------------
>> Distance ????
>>
>> _____________________________________________________
>> School of Information and Communication Engineering
>> Beijing University of Posts and Telecommunications
>> Beijing 100876, PR China
>>
>> ??????????????????????????????????????????
>> _____________________________________________________
>> Mobile Phone:
>> (+86) 151-1698-3550 Beijing
>> E-mail:
>> [email protected]
>> [email protected]
>> Homepage:
>> http://www.muzixing.com
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>>
>>
>>
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>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/ryu-devel
>>
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