Difference between revisions of "Neutron/OFAgent/FlowTable"
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OpenFlow1.3 flow table for OFAgent | OpenFlow1.3 flow table for OFAgent | ||
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+ | WIP implementation: https://github.com/yamt/neutron/tree/ofagent-merge-bridges | ||
* requirements | * requirements |
Revision as of 03:03, 21 April 2014
OpenFlow1.3 flow table for OFAgent
WIP implementation: https://github.com/yamt/neutron/tree/ofagent-merge-bridges
- requirements
- plain OpenFlow 1.3. no vendor extensions.
- todo: VXLAN (same as GRE?)
- legends
xxx: network id (agent internal use) yyy: segment id (vlan id, gre key, ...) a,b,c: tunnel port (tun_br_ofports, map[net_id].tun_ofports) i,j,k: vm port (map[net_id].vif_ports[vif_id].ofport) x,y,z: physical port (int_ofports) N: tunnel type (0 for TYPE_GRE, 1 for TYPE_xxx, ...) uuu: unicast l2 address
- tables (in order)
CHECK_IN_PORT CHECK_NETWORK+N ARP_PROXY TUNNEL_OUT TUNNEL_OUT_FLOOD+N LOCAL_OUT LOCAL_OUT_FLOOD
- CHECK_IN_PORT
for each vm ports: in_port=i, write_metadata(xxx),goto(ARP_PROXY) // port_bound TYPE_GRE for each tunnel ports: in_port=a, goto(CHECK_NETWORK+N) // setup_tunnel_port TYPE_VLAN for each physical ports: in_port=x, goto(CHECK_NETWORK+N) TYPE_FLAT in_port=x, goto(CHECK_NETWORK+N) default drop
- CHECK_NETWORK+N. (per tunnel types) tunnel/vlan -> network
TYPE_GRE for each networks: // _provision_local_vlan_inbound_for_tunnel tun_id=yyy, write_metadata(xxx),goto(LOCAL_OUT) TYPE_VLAN for each networks: vlan_vid=present|yyy, write_metadata(xxx),pop_vlan,goto(LOCAL_OUT) TYPE_FLAT vlan_vid=none, write_metadata(xxx),pop_vlan,goto(LOCAL_OUT) default drop
- ARP_PROXY
- todo: local arp responder
goto(TUNNEL_OUT)
- TUNNEL_OUT
- todo: learning and/or l2 pop
goto(TUNNEL_OUT_FLOOD+0)
- TUNNEL_OUT_FLOOD+N. (per tunnel types)
network -> tunnel/vlan output to tunnel/physical ports "next table" might be LOCAL_OUT TYPE_GRE for each networks: // _provision_local_vlan_outbound_for_tunnel metadata=xxx, set_tunnel(yyy),output:a,b,c,goto(next table) TYPE_VLAN for each networks: metadata=xxx, push_vlan:0x8100,set_field:present|yyy->vlan_vid,output:x,y,z,goto(next table) TYPE_FLAT metadata=xxx, output:x,y,z,goto(next table) default goto(next table)
- LOCAL_OUT
- todo: learning and/or l2 pop
for each known destinations: metadata=xxx,eth_dst=uuu output:i goto(LOCAL_OUT_FLOOD)
- LOCAL_OUT_FLOOD
- todo: learning and/or l2 pop
for each networks: metadata=xxx, output:i,j,k // port_bound default drop
- references
- similar attempts for OVS agent https://wiki.openstack.org/wiki/Ovs-flow-logic
- we use metadata instead of "internal" VLANs
- we don't want to use NX learn action
- similar attempts for OVS agent https://wiki.openstack.org/wiki/Ovs-flow-logic