Rehome ovs related constants to the neutron-lib

Constants were in
neutron/plugins/ml2/drivers/openvswitch/agent/common/constants.py

but at least some of them, like TUNNEL_NETWORK_TYPES,
PEER_INTEGRATION_PREFIX or FLOOD_TO_TUN are used in other projects also
so it would be good to move have them in the neutron-lib.

Change-Id: I46f0cc0bbf680fbceff1806720bb40b60a5e54e8

neutron_lib/constants.py

@@ -672,3 +672,205 @@ PORT_NUMA_POLICIES = (PORT_NUMA_POLICY_REQUIRED, PORT_NUMA_POLICY_PREFERRED,
 ACCESS_SHARED = 'access_as_shared'
 ACCESS_READONLY = 'access_as_readonly'
 ACCESS_EXTERNAL = 'access_as_external'
+
+#######################
+# OVS related constants
+#######################
+
+# Special vlan_tci value indicating flat network
+FLAT_VLAN_TCI = '0x0000/0x1fff'
+
+# Topic for tunnel notifications between the plugin and agent
+TUNNEL = 'tunnel'
+
+# Name prefixes for veth device or patch port pair linking the integration
+# bridge with the physical bridge for a physical network
+PEER_INTEGRATION_PREFIX = 'int-'
+PEER_PHYSICAL_PREFIX = 'phy-'
+
+# Nonexistent peer used to create patch ports without associating them, it
+# allows to define flows before association
+NONEXISTENT_PEER = 'nonexistent-peer'
+
+# The different types of tunnels
+TUNNEL_NETWORK_TYPES = [TYPE_GRE, TYPE_VXLAN, TYPE_GENEVE]
+
+# --- OpenFlow table IDs
+
+# --- Integration bridge (int_br)
+
+LOCAL_SWITCHING = 0
+
+# The pyhsical network types of support DVR router
+DVR_PHYSICAL_NETWORK_TYPES = [TYPE_VLAN, TYPE_FLAT]
+
+# Various tables for DVR use of integration bridge flows
+DVR_TO_SRC_MAC = 1
+DVR_TO_SRC_MAC_PHYSICAL = 2
+ARP_DVR_MAC_TO_DST_MAC = 3
+ARP_DVR_MAC_TO_DST_MAC_PHYSICAL = 4
+CANARY_TABLE = 23
+
+# Table for ARP poison/spoofing prevention rules
+ARP_SPOOF_TABLE = 24
+
+# Table for MAC spoof filtering
+MAC_SPOOF_TABLE = 25
+
+# Table to decide whether further filtering is needed
+TRANSIENT_TABLE = 60
+LOCAL_MAC_DIRECT = 61
+TRANSIENT_EGRESS_TABLE = 62
+
+# Tables used for ovs firewall
+BASE_EGRESS_TABLE = 71
+RULES_EGRESS_TABLE = 72
+ACCEPT_OR_INGRESS_TABLE = 73
+BASE_INGRESS_TABLE = 81
+RULES_INGRESS_TABLE = 82
+
+OVS_FIREWALL_TABLES = (
+    BASE_EGRESS_TABLE,
+    RULES_EGRESS_TABLE,
+    ACCEPT_OR_INGRESS_TABLE,
+    BASE_INGRESS_TABLE,
+    RULES_INGRESS_TABLE,
+)
+
+# Tables for parties interacting with ovs firewall
+ACCEPTED_EGRESS_TRAFFIC_TABLE = 91
+ACCEPTED_INGRESS_TRAFFIC_TABLE = 92
+DROPPED_TRAFFIC_TABLE = 93
+ACCEPTED_EGRESS_TRAFFIC_NORMAL_TABLE = 94
+
+INT_BR_ALL_TABLES = (
+    LOCAL_SWITCHING,
+    DVR_TO_SRC_MAC,
+    DVR_TO_SRC_MAC_PHYSICAL,
+    CANARY_TABLE,
+    ARP_SPOOF_TABLE,
+    MAC_SPOOF_TABLE,
+    LOCAL_MAC_DIRECT,
+    TRANSIENT_TABLE,
+    TRANSIENT_EGRESS_TABLE,
+    BASE_EGRESS_TABLE,
+    RULES_EGRESS_TABLE,
+    ACCEPT_OR_INGRESS_TABLE,
+    BASE_INGRESS_TABLE,
+    RULES_INGRESS_TABLE,
+    ACCEPTED_EGRESS_TRAFFIC_TABLE,
+    ACCEPTED_INGRESS_TRAFFIC_TABLE,
+    DROPPED_TRAFFIC_TABLE)
+
+# --- Tunnel bridge (tun_br)
+
+# Various tables for tunneling flows
+DVR_PROCESS = 1
+PATCH_LV_TO_TUN = 2
+GRE_TUN_TO_LV = 3
+VXLAN_TUN_TO_LV = 4
+GENEVE_TUN_TO_LV = 6
+
+DVR_NOT_LEARN = 9
+LEARN_FROM_TUN = 10
+UCAST_TO_TUN = 20
+ARP_RESPONDER = 21
+FLOOD_TO_TUN = 22
+# NOTE(vsaienko): transit table used by networking-bagpipe driver to
+# mirror traffic to EVPN and standard tunnels to gateway nodes
+BAGPIPE_FLOOD_TO_TUN_BROADCAST = 222
+
+TUN_BR_ALL_TABLES = (
+    LOCAL_SWITCHING,
+    DVR_PROCESS,
+    PATCH_LV_TO_TUN,
+    GRE_TUN_TO_LV,
+    VXLAN_TUN_TO_LV,
+    GENEVE_TUN_TO_LV,
+    DVR_NOT_LEARN,
+    LEARN_FROM_TUN,
+    UCAST_TO_TUN,
+    ARP_RESPONDER,
+    FLOOD_TO_TUN)
+
+# --- Physical Bridges (phys_brs)
+
+# Various tables for DVR use of physical bridge flows
+DVR_PROCESS_PHYSICAL = 1
+LOCAL_VLAN_TRANSLATION = 2
+DVR_NOT_LEARN_PHYSICAL = 3
+
+PHY_BR_ALL_TABLES = (
+    LOCAL_SWITCHING,
+    DVR_PROCESS_PHYSICAL,
+    LOCAL_VLAN_TRANSLATION,
+    DVR_NOT_LEARN_PHYSICAL)
+
+# --- end of OpenFlow table IDs
+
+# type for ARP reply in ARP header
+ARP_REPLY = '0x2'
+
+# Map tunnel types to tables number
+TUN_TABLE = {TYPE_GRE: GRE_TUN_TO_LV,
+             TYPE_VXLAN: VXLAN_TUN_TO_LV,
+             TYPE_GENEVE: GENEVE_TUN_TO_LV}
+
+
+# The default respawn interval for the ovsdb monitor
+DEFAULT_OVSDBMON_RESPAWN = 30
+
+# Represent invalid OF Port
+OFPORT_INVALID = -1
+
+ARP_RESPONDER_ACTIONS = ('move:NXM_OF_ETH_SRC[]->NXM_OF_ETH_DST[],'
+                         'mod_dl_src:%(mac)s,'
+                         'load:0x2->NXM_OF_ARP_OP[],'
+                         'move:NXM_NX_ARP_SHA[]->NXM_NX_ARP_THA[],'
+                         'move:NXM_OF_ARP_SPA[]->NXM_OF_ARP_TPA[],'
+                         'load:%(mac)#x->NXM_NX_ARP_SHA[],'
+                         'load:%(ip)#x->NXM_OF_ARP_SPA[],'
+                         'in_port')
+
+# Represent ovs status
+OVS_RESTARTED = 0
+OVS_NORMAL = 1
+OVS_DEAD = 2
+
+EXTENSION_DRIVER_TYPE = 'ovs'
+
+# ovs datapath types
+OVS_DATAPATH_SYSTEM = 'system'
+OVS_DATAPATH_NETDEV = 'netdev'
+OVS_DPDK_VHOST_USER = 'dpdkvhostuser'
+OVS_DPDK_VHOST_USER_CLIENT = 'dpdkvhostuserclient'
+
+OVS_DPDK_PORT_TYPES = [OVS_DPDK_VHOST_USER, OVS_DPDK_VHOST_USER_CLIENT]
+
+# default ovs vhost-user socket location
+VHOST_USER_SOCKET_DIR = '/var/run/openvswitch'
+
+MAX_DEVICE_RETRIES = 5
+
+# OpenFlow version constants
+OPENFLOW10 = "OpenFlow10"
+OPENFLOW11 = "OpenFlow11"
+OPENFLOW12 = "OpenFlow12"
+OPENFLOW13 = "OpenFlow13"
+OPENFLOW14 = "OpenFlow14"
+OPENFLOW15 = "OpenFlow15"
+
+OPENFLOW_MAX_PRIORITY = 65535
+
+# A placeholder for dead vlans.
+DEAD_VLAN_TAG = MAX_VLAN_TAG + 1
+
+# callback resource for setting 'bridge_name' in the 'binding:vif_details'
+OVS_BRIDGE_NAME = 'ovs_bridge_name'
+
+# callback resource for notifying to ovsdb handler
+OVSDB_RESOURCE = 'ovsdb'
+
+# Used in ovs port 'external_ids' in order mark it for no cleanup when
+# ovs_cleanup script is used.
+SKIP_CLEANUP = 'skip_cleanup'

releasenotes/notes/rehome-ovs-constants-3a11c9ad0d44132a.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    The neutron
+    ``neutron.plugins.ml2.drivers.openvswitch.agent.common.constants``
+    are now available in ``neutron_lib.constants``.