On Sat, 18 Jan 2014 22:22:12 +0800
Shuoling Deng <[email protected]> wrote:
> Hello, Everyone.
>
> In ryu/topology/swiches.py.
>
> there is a code snippet I don't understand the meaning clearly, just
> as follows:
>
>> @staticmethod
>> def _drop_packet(msg):
>> buffer_id = msg.buffer_id
>> if buffer_id == msg.datapath.ofproto.OFP_NO_BUFFER:
>> return
>>
>> dp = msg.datapath
>> # TODO:XXX
>> if dp.ofproto.OFP_VERSION == ofproto_v1_0.OFP_VERSION:
>> dp.send_packet_out(buffer_id, msg.in_port, [])
>> else:
>> LOG.error('cannot drop_packet. unsupported version. %x',
>>
>> dp.ofproto.OFP_VERSION)
>>
>
> In the logic of "else" for none-OF_VERSION_1.0:
> WHY does this program snippet call "Log.error()" and show the
> message of "cannot drop packet, unsupported version."?
> Is it a Bug?
I guess it's a 'not-implemented-yet' bug.
> BTW, when I use the CPQD1.3 switches to have a test of My App, My
> Console print these error message frequently. So I issue these
> question.
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