[ovs-discuss] Is there any document about nicira externtion

Ben Pfaff blp at ovn.org
Tue Aug 20 16:44:51 UTC 2019


The implementation in OVS is here:
        https://github.com/openvswitch/ovs/blob/master/lib/ofp-packet.c
It uses the same kind of TLV properties used in several places in
OpenFlow.

On Tue, Aug 20, 2019 at 06:45:21PM +0800, kai xi fan wrote:
> Thanks.
> I have read the following file.
> https://github.com/openvswitch/ovs/blob/master/include/openflow/nicira-ext.h
> 
> But it's too simple to understand. For example, nicira extension use
> properties in "nxm packet_in_2" packet in format. But there is no such
> openflow message format in detail.
> I have to tcpdump the openflow packet to understand it.
> May be there is a official document about this ?
> 
> Numan Siddique <nusiddiq at redhat.com> 于2019年8月20日周二 下午3:37写道:
> 
> >
> >
> > On Tue, Aug 20, 2019 at 7:35 AM kai xi fan <kaixi.f at gmail.com> wrote:
> >
> >> I am writing a controller to control ovs through openflow protocol.
> >> I found that  when I dump flows from ovs using ovs-ofctl. It shows me so
> >> many fields prefixed with "NXM".
> >> And we plan to use "nxm packet_in_2" format. It also needs nicira
> >> extensions.
> >> So if the controller wants to communicate with ovs using openflow 1.3, I
> >> have to deal with nicira extensions.
> >> But I could not found any document about its format and the corresponding
> >> openflow message format.
> >> Could any one help me ?
> >>
> >
> > I think you can find useful information here -
> > https://github.com/openvswitch/ovs/blob/master/include/openflow/nicira-ext.h
> >
> > Thanks
> > Numan
> >
> >
> >> thanks.
> >> _______________________________________________
> >> discuss mailing list
> >> discuss at openvswitch.org
> >> https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
> >>
> >

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