23d743a444
Prior this patch OVN Octavia provider driver used
default 5-tuple-hash algorithm which is pretty similar to
SOURCE_IP_PORT.
Unfornutelly because of the bug described here [1] it
was not clear how 5-tuple-hash works and some inconsistencies
between kernel and user space implementations were found.
OVN recently added support for selective fields in OVN LB, to
explicitly define what fields are being hashed to tackle this problem.
This commit adds support for that kind of hashing. If installation
of OVN on which OVN Octavia provider is running doesn't support
selective fields - it will use old behavior.
[1] https://mail.openvswitch.org/pipermail/ovs-discuss/2020-April/049896.html
[2] 5af304e747
Change-Id: I7b4ab99d1be2855e18b186557990c85f170ad548
Closes-Bug: #1871239
92 lines
3.3 KiB
Python
92 lines
3.3 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from octavia_lib.common import constants
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# TODO(mjozefcz): Use those variables from neutron-lib once released.
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LRP_PREFIX = "lrp-"
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LB_VIP_PORT_PREFIX = "ovn-lb-vip-"
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OVN_PORT_NAME_EXT_ID_KEY = 'neutron:port_name'
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OVN_ROUTER_NAME_EXT_ID_KEY = 'neutron:router_name'
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OVN_PORT_NAME_EXT_ID_KEY = 'neutron:port_name'
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OVN_PORT_FIP_EXT_ID_KEY = 'neutron:port_fip'
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OVN_SUBNET_EXT_ID_KEY = 'neutron:subnet_id'
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OVN_SUBNET_EXT_IDS_KEY = 'neutron:subnet_ids'
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OVN_NETWORK_NAME_EXT_ID_KEY = 'neutron:network_name'
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OVN_SG_IDS_EXT_ID_KEY = 'neutron:security_group_ids'
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OVN_DEVICE_OWNER_EXT_ID_KEY = 'neutron:device_owner'
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OVN_FIP_EXT_ID_KEY = 'neutron:fip_id'
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OVN_FIP_PORT_EXT_ID_KEY = 'neutron:fip_port_id'
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OVN_GW_PORT_EXT_ID_KEY = 'neutron:gw_port_id'
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LB_EXT_IDS_LS_REFS_KEY = 'ls_refs'
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LB_EXT_IDS_LR_REF_KEY = 'lr_ref'
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LB_EXT_IDS_POOL_PREFIX = 'pool_'
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LB_EXT_IDS_LISTENER_PREFIX = 'listener_'
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LB_EXT_IDS_MEMBER_PREFIX = 'member_'
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LB_EXT_IDS_VIP_KEY = 'neutron:vip'
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LB_EXT_IDS_VIP_FIP_KEY = 'neutron:vip_fip'
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LB_EXT_IDS_VIP_PORT_ID_KEY = 'neutron:vip_port_id'
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# Auth sections
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SERVICE_AUTH = 'service_auth'
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# Request type constants
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REQ_TYPE_LB_CREATE = 'lb_create'
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REQ_TYPE_LB_DELETE = 'lb_delete'
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REQ_TYPE_LB_FAILOVER = 'lb_failover'
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REQ_TYPE_LB_UPDATE = 'lb_update'
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REQ_TYPE_LISTENER_CREATE = 'listener_create'
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REQ_TYPE_LISTENER_DELETE = 'listener_delete'
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REQ_TYPE_LISTENER_UPDATE = 'listener_update'
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REQ_TYPE_POOL_CREATE = 'pool_create'
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REQ_TYPE_POOL_DELETE = 'pool_delete'
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REQ_TYPE_POOL_UPDATE = 'pool_update'
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REQ_TYPE_MEMBER_CREATE = 'member_create'
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REQ_TYPE_MEMBER_DELETE = 'member_delete'
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REQ_TYPE_MEMBER_UPDATE = 'member_update'
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REQ_TYPE_LB_CREATE_LRP_ASSOC = 'lb_create_lrp_assoc'
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REQ_TYPE_LB_DELETE_LRP_ASSOC = 'lb_delete_lrp_assoc'
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REQ_TYPE_HANDLE_VIP_FIP = 'handle_vip_fip'
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REQ_TYPE_HANDLE_MEMBER_DVR = 'handle_member_dvr'
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REQ_TYPE_EXIT = 'exit'
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# Request information constants
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REQ_INFO_ACTION_ASSOCIATE = 'associate'
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REQ_INFO_ACTION_DISASSOCIATE = 'disassociate'
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REQ_INFO_MEMBER_ADDED = 'member_added'
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REQ_INFO_MEMBER_DELETED = 'member_deleted'
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# Disabled resources have a ':D' at the end
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DISABLED_RESOURCE_SUFFIX = 'D'
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# This driver only supports TCP and UDP, with a single LB algorithm
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OVN_NATIVE_LB_PROTOCOLS = [constants.PROTOCOL_TCP,
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constants.PROTOCOL_UDP, ]
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OVN_NATIVE_LB_ALGORITHMS = [constants.LB_ALGORITHM_SOURCE_IP_PORT, ]
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# Prepended to exception log messages
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EXCEPTION_MSG = "Exception occurred during %s"
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# Used in functional tests
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LR_REF_KEY_HEADER = 'neutron-'
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# LB selection fields to represent LB algorithm
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LB_SELECTION_FIELDS_MAP = {
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constants.LB_ALGORITHM_SOURCE_IP_PORT: ["ip_dst", "ip_src",
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"tp_dst", "tp_src"],
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constants.LB_ALGORITHM_SOURCE_IP: ["ip_src", "ip_dst"],
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None: ["ip_src", "ip_dst", "tp_src", "tp_dst"],
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}
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