Hi, Ben, Thank you for the clarification. Just one more question, are there any documentations that I could refer to for datapath flow mask generation? Thanks!
An Wang On Tue, May 26, 2015 at 9:09 PM, Ben Pfaff <[email protected]> wrote: > On Thu, May 21, 2015 at 01:26:01PM -0400, an wang wrote: > > Hi, All, > > > > I'm trying to figure out how datapath mega flows are generated. So I did > a > > very simple experiment on openvswitch 2.3.0. I inserted a rule ovs-ofctl > > add-flow br0 in_port=2,ip,nw_dst=192.168.2.2/16,actions=output:1 to the > > userspace flow table. And I used ovs-appctl dpif/dump-flows br0 to check > > the flows in datapath flow table and this is what I observed. > > > > > skb_priority(0),recirc_id(0),in_port(3),eth(src=00:c0:95:e0:0e:ad,dst=00:00:39:d3:34:3b),eth_type(0x0800),ipv4(src= > > > 192.168.2.1/255.255.255.255,dst=192.168.2.2/255.255.255.255,proto=6/0xff,tos=0x10/0,ttl=62/0,frag=no/0xff > ), > > packets:26670724, bytes:1762573766, used:0.000s, flags:SR., actions:2 > > > skb_priority(0),recirc_id(0),in_port(3),eth(src=00:c0:95:e0:0e:ad,dst=00:50:56:49:01:29),eth_type(0x0800),ipv4(src= > > > 192.168.2.1/255.255.255.255,dst=192.168.2.2/255.255.255.255,proto=6/0xff,tos=0x10/0,ttl=63/0,frag=no/0xff > ), > > packets:9469993, bytes:586123740, used:0.000s, flags:SF., actions:2 > > > > Somehow it seems that the ip dst field is not wildcarded at all. And I've > > repeated the experiment for several times using different prefix and I > > obtained the same result. Could anyone please explain why this happened > and > > how wildcarded flows are supported in the datapath? > > OVS 2.3 doesn't configure any prefix fields by default, so you have to > set the "prefixes" column in the OVSDB Flow_Table table. > > OVS 2.4 uses IPV4 source and destination fields as prefixes by default. >
_______________________________________________ discuss mailing list [email protected] http://openvswitch.org/mailman/listinfo/discuss
