Hi,
On 2015年12月30日 02:30, Zahi Gradstein wrote:
> Hi,
> I hope this is where I should send this E-Mail J
>
>
>
> I’m having an issue with port stats reply handler at RYU Controller.
>
>
>
> My code is as following:
>
>
>
> *def send_port_stats_request(datapath, port_num):*
>
> ofp = datapath.ofproto
>
> ofp_parser = datapath.ofproto_parser
>
>
>
> req = ofp_parser.OFPPortStatsRequest(datapath, 0, port_num)
>
> return datapath.send_msg(req)
>
>
>
>
>
> @set_ev_cls(ofp_event.EventOFPPortStatsReply, MAIN_DISPATCHER)
>
> * def port_stats_reply_handler(self, ev):*
>
> ports = []
>
> for stat in ev.msg.body:
>
> print(' \nStatistics of port_no: %d \n'
>
> ' rx_packets: %d \n tx_packets: %d \n'
>
> ' rx_bytes: %d \n tx_bytes: %d \n'
>
> ' rx_dropped: %d \n tx_dropped: %d \n'
>
> ' rx_errors: %d \n tx_errors: %d \n'
>
> ' rx_frame_err: %d \n rx_over_err: %d \n rx_crc_err:
> %d \n'
>
> ' collisions: %d \n duration_sec: %d \n duration_nsec:
> %d \n'
>
> ' --- End of statistics --- \n' %
>
> (stat.port_no,
>
> stat.rx_packets, stat.tx_packets,
>
> stat.rx_bytes, stat.tx_bytes,
>
> stat.rx_dropped, stat.tx_dropped,
>
> stat.rx_errors, stat.tx_errors,
>
> stat.rx_frame_err, stat.rx_over_err,
>
> stat.rx_crc_err, stat.collisions,
>
> stat.duration_sec, stat.duration_nsec))
>
>
>
> self.logger.debug('PortStats: %s', ports)
>
>
>
> once I sent several messages from the controller:
>
> *send_port_stats_request(dp1,0)*
>
> *send_port_stats_request(dp1,1)*
>
> *send_port_stats_request(dp1,2)*
>
> *send_port_stats_request(dp1,3)*
>
> *send_port_stats_request(dp1,4)*
>
> *send_port_stats_request(dp1,5)*
>
> *send_port_stats_request(dp1,6)*
>
> *send_port_stats_request(dp1,7)*
>
> *send_port_stats_request(dp1,8)*
>
> *send_port_stats_request(dp1,9)*
>
> * *
>
> some of the packets seems to arrive to reply handler and some don’t (I see
> they are all sent from the switch (using indigo).
>
> What can be the problem?
First, please confirm that your switch sends the port stats reply messages by
using wireshark, tcpdump or so.
Or,
How about setting "ofp.OFPP_ANY" as port_num in OFPPortStatsRequest?
It is the default value of OFPPortStatsRequest.
>
>
>
> In addition, I saw get_port_stats at ofctl – but could not understand what is
> waiters.
ryu.lib.ofctl_v1_* are libraries for ryu.app.ofctl_rest and "waiters" are
a dictionary for observing the OpenFlow event from switches.
https://github.com/iwaseyusuke/ryu/blob/master/ryu/app/ofctl_rest.py
If you want to use ryu.lib.ofctl_v1_* as the utilities of your apps,
you need to implement event handlers like following.
It may be complicated and not easy to use though.
https://github.com/iwaseyusuke/ryu/blob/master/ryu/app/ofctl_rest.py#L936
Thanks,
Iwase
>
>
>
> If you don’t know, can you direct me?
>
>
>
> Thanks,
>
> Zahi
>
>
>
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