Ok. I got it. Maybe I misunderstood the concept of metadata. Metadata is passed between tables. It is not from packets.
One more question, if we used metadata, is metadata stored in "tun_in" in "struct ovs_key_ipv4_tunnel"? Which data structure keeps metadata information? Thanks, Junguk 2014-08-26 13:50 GMT-06:00 Ben Pfaff <b...@nicira.com>: > Metadata is always 0 at the point that a packet enters the OpenFlow > pipeline, so there's no need for the datapath to match on it--it would > always be a match against 0. > > On Tue, Aug 26, 2014 at 01:44:56PM -0600, Junguk Cho wrote: > > Oh, really? > > > > Basically, what I understood is datapath keeps some tables based on > "struct > > sw_flow_key" and used it for evaluating if incoming packet is matched > or > > not. > > > > Is it right or do I miss something? > > If I miss something, can you forward me to metadata matching in datapath? > > > > Thanks, > > Junguk > > > > > > 2014-08-26 13:40 GMT-06:00 Ben Pfaff <b...@nicira.com>: > > > > > On Tue, Aug 26, 2014 at 01:36:04PM -0600, Junguk Cho wrote: > > > > Hi, I have a simple question. > > > > When we use metadata as flow-rule, > > > > Does all traffic forward ofproto to match it because there is no > match > > > > field in "struct sw_flow" in datapath? > > > > > > No, metadata matching still allows for kernel forwarding. There's no > > > need to send every packet to userspace. > > > > _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
