OF1.5 has two different flow stats messages, OFPMP_FLOW_DESC and OFPMP_FLOW_STATS. OVS currently implements only the former.
On Mon, Nov 12, 2018 at 11:05:06AM +0100, Jozef Valko wrote: > Ok, thanks. > In the earlier message you mentioned that you don't see any problems with > OF1.5 flow stats. > So is there some other way how to get flow stats from the forwarders using > OF1.5? > > Thank you and regards. > > > po 12. 11. 2018 o 0:47 Ben Pfaff <b...@ovn.org> napísal(a): > > > OK, I took a look. OVS just doesn't support that request in OF1.5 yet. > > No one has implemented it. As I've said, OF1.5 support is incomplete. > > > > On Sun, Nov 11, 2018 at 11:34:11PM +0100, Jozef Valko wrote: > > > Thanks a lot! > > > OVS version 2.9.0 was installed along with Mininet emulator. I've already > > > tried to update OVS to v2.10.1, but Mininet then met some issues in > > > creating the emulation. Anyway, there was the same error with the newest > > > OVS version. > > > I have created a PCAP file for you. Kindly please have a look at the > > > packets no. 89 and 90, these are the request and error reply packets. > > > > > > Thank you for your time. > > > Regards, > > > Jozef Valko. > > > > > > > > > ne 11. 11. 2018 o 21:35 Ben Pfaff <b...@ovn.org> napísal(a): > > > > > > > On Sun, Nov 11, 2018 at 09:12:03PM +0100, Jozef Valko wrote: > > > > > Hello all, > > > > > I am developing an SDN application using Ryu and Mininet. My goal is > > to > > > > > develop security module on the top of Ryu controller. Therefore, I > > need a > > > > > regular statistics update from the forwarders which are OVS bridges. > > For > > > > > this purpose I am using OFPFlowStatsRequest function provided by Ryu > > > > > parser. Below is the function which I am using: > > > > > [image: image.png] > > > > > This function runs in separate thread and sends the request every 10 > > > > > seconds. > > > > > When I use this function with OpenFlow14 everything is fine, the > > > > controller > > > > > receives flow stats from the forwarder. But when I try to trigger > > this > > > > > function using OpenFlow15, the following error shows in the > > controller > > > > > window: > > > > > [image: image.png] > > > > > I tried to google this issue, searched in the specification and > > Ryubook > > > > but > > > > > I did not find any solution. Because Ryu doesn't crash, I suppose > > that > > > > this > > > > > is OVS-related issue. > > > > > The only difference between requests in OF14 and OF15 is the value > > of the > > > > > field 'type'. In case of OF14 it is 1 and in case of OF15 it is 17. > > Here > > > > is > > > > > the request before sending (OF15): > > > > > [image: image.png] > > > > > What can be an issue? How to properly request flow statistics from > > the > > > > OVS > > > > > forwarders using Ryu and OpenFlow15? > > > > > Versions of the applications: > > > > > Mininet - 2.3.0d4 > > > > > Ryu - ryu-manager 4.29 > > > > > OVS - ovs_version: "2.9.0" > > > > > > > > > > PortStatsRequest function is working nicely in both OF14 and OF15. > > > > > > > > OVS doesn't fully support OpenFlow 1.5 and does not enable it by > > > > default, so I suppose that you turned it on yourself. That is fine--we > > > > are pleased to hear about problems with protocol versions that are not > > > > yet complete. Also, I don't see any problems with OF1.5 flow stats and > > > > it seems to work OK in my own simple test case with ovs-ofctl. > > > > > > > > However, for testing incomplete protocol versions, one should use the > > > > latest version of Open vSwitch. Please try the latest release v2.10.1 > > > > or what one can find on master. > > > > > > > > Alternatively, if you can provide a hex dump of the message that Ryu is > > > > sending OVS (or otherwise some kind of exact representation), I can > > test > > > > that for you. > > > > > > > > > > _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
