1010 lines
36 KiB
Python
1010 lines
36 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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import collections
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import copy
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import inspect
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import os
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import netaddr
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from neutron_lib.api.definitions import external_net
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from neutron_lib.api.definitions import extra_dhcp_opt as edo_ext
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from neutron_lib.api.definitions import l3
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from neutron_lib.api.definitions import port_security as psec
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from neutron_lib.api.definitions import portbindings
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from neutron_lib.api.definitions import provider_net
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from neutron_lib.api import validators
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from neutron_lib import constants as const
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from neutron_lib import context as n_context
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from neutron_lib import exceptions as n_exc
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from neutron_lib.plugins import directory
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from neutron_lib.utils import net as n_utils
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from oslo_concurrency import processutils
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from oslo_config import cfg
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from oslo_log import log
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from oslo_serialization import jsonutils
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from oslo_utils import netutils
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from oslo_utils import strutils
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from ovsdbapp import constants as ovsdbapp_const
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import tenacity
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from neutron._i18n import _
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from neutron.common.ovn import constants
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from neutron.common.ovn import exceptions as ovn_exc
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from neutron.common import utils as common_utils
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from neutron.conf.plugins.ml2.drivers.ovn import ovn_conf
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from neutron.db import models_v2
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from neutron.objects import ports as ports_obj
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LOG = log.getLogger(__name__)
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CONF = cfg.CONF
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DNS_RESOLVER_FILE = "/etc/resolv.conf"
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AddrPairsDiff = collections.namedtuple(
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'AddrPairsDiff', ['added', 'removed', 'changed'])
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PortExtraDHCPValidation = collections.namedtuple(
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'PortExtraDHCPValidation', ['failed', 'invalid_ipv4', 'invalid_ipv6'])
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BPInfo = collections.namedtuple(
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'BPInfo', ['bp_param', 'vnic_type', 'capabilities'])
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class OvsdbClientCommand(object):
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_CONNECTION = 0
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_PRIVATE_KEY = 1
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_CERTIFICATE = 2
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_CA_AUTHORITY = 3
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OVN_Northbound = "OVN_Northbound"
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OVN_Southbound = "OVN_Southbound"
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_db_settings = {
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OVN_Northbound: {
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_CONNECTION: ovn_conf.get_ovn_nb_connection,
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_PRIVATE_KEY: ovn_conf.get_ovn_nb_private_key,
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_CERTIFICATE: ovn_conf.get_ovn_nb_certificate,
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_CA_AUTHORITY: ovn_conf.get_ovn_nb_ca_cert,
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},
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OVN_Southbound: {
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_CONNECTION: ovn_conf.get_ovn_sb_connection,
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_PRIVATE_KEY: ovn_conf.get_ovn_sb_private_key,
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_CERTIFICATE: ovn_conf.get_ovn_sb_certificate,
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_CA_AUTHORITY: ovn_conf.get_ovn_sb_ca_cert,
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},
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}
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@classmethod
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def run(cls, command):
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"""Run custom ovsdb protocol command.
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:param command: JSON object of ovsdb protocol command
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"""
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try:
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db = command[0]
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except IndexError:
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raise KeyError(
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_("%s or %s schema must be specified in the command %s" % (
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cls.OVN_Northbound, cls.OVN_Southbound, command)))
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if db not in (cls.OVN_Northbound, cls.OVN_Southbound):
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raise KeyError(
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_("%s or %s schema must be specified in the command %s" % (
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cls.OVN_Northbound, cls.OVN_Southbound, command)))
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cmd = ['ovsdb-client',
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cls.COMMAND,
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cls._db_settings[db][cls._CONNECTION](),
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'--timeout',
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str(ovn_conf.get_ovn_ovsdb_timeout())]
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if cls._db_settings[db][cls._PRIVATE_KEY]():
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cmd += ['-p', cls._db_settings[db][cls._PRIVATE_KEY](),
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'-c', cls._db_settings[db][cls._CERTIFICATE](),
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'-C', cls._db_settings[db][cls._CA_AUTHORITY]()]
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cmd.append(jsonutils.dumps(command))
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return processutils.execute(
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*cmd,
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log_errors=processutils.LOG_FINAL_ERROR)
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class OvsdbClientTransactCommand(OvsdbClientCommand):
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COMMAND = 'transact'
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def ovn_name(id):
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# The name of the OVN entry will be neutron-<UUID>
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# This is due to the fact that the OVN application checks if the name
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# is a UUID. If so then there will be no matches.
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# We prefix the UUID to enable us to use the Neutron UUID when
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# updating, deleting etc.
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return "%s%s" % (constants.OVN_NAME_PREFIX, id)
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def ovn_lrouter_port_name(id):
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# The name of the OVN lrouter port entry will be lrp-<UUID>
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# This is to distinguish with the name of the connected lswitch patch port,
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# which is named with neutron port uuid, so that OVS patch ports are
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# generated properly. The pairing patch port names will be:
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# - patch-lrp-<UUID>-to-<UUID>
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# - patch-<UUID>-to-lrp-<UUID>
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# lrp stands for Logical Router Port
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return constants.LRP_PREFIX + '%s' % id
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def ovn_cr_lrouter_port_name(_id):
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# The name of the OVN chassisredirect lrouter port entry will be
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# cr-lrp-<UUID>
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return 'cr-lrp-%s' % _id
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def ovn_provnet_port_name(network_id):
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# The name of OVN lswitch provider network port entry will be
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# provnet-<Network-UUID>. The port is created for network having
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# provider:physical_network attribute.
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return constants.OVN_PROVNET_PORT_NAME_PREFIX + '%s' % network_id
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def ovn_vhu_sockpath(sock_dir, port_id):
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# Frame the socket path of a virtio socket
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return os.path.join(
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sock_dir,
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# this parameter will become the virtio port name,
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# so it should not exceed IFNAMSIZ(16).
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(const.VHOST_USER_DEVICE_PREFIX + port_id)[:14])
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def ovn_addrset_name(sg_id, ip_version):
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# The name of the address set for the given security group id and ip
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# version. The format is:
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# as-<ip version>-<security group uuid>
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# with all '-' replaced with '_'. This replacement is necessary
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# because OVN doesn't support '-' in an address set name.
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return ('as-%s-%s' % (ip_version, sg_id)).replace('-', '_')
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def ovn_pg_addrset_name(sg_id, ip_version):
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# The name of the address set for the given security group id modelled as a
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# Port Group and ip version. The format is:
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# pg-<security group uuid>-<ip version>
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# with all '-' replaced with '_'. This replacement is necessary
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# because OVN doesn't support '-' in an address set name.
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return ('pg-%s-%s' % (sg_id, ip_version)).replace('-', '_')
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def ovn_port_group_name(sg_id):
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# The name of the port group for the given security group id.
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# The format is: pg-<security group uuid>.
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return ('pg-%s' % sg_id).replace('-', '_')
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def is_network_device_port(port):
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return port.get('device_owner', '').startswith(
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const.DEVICE_OWNER_PREFIXES)
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def _is_dhcp_disabled(dhcp_opt):
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return (dhcp_opt['opt_name'] == constants.DHCP_DISABLED_OPT and
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dhcp_opt.get('opt_value', '').lower() == 'true')
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def validate_port_extra_dhcp_opts(port):
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"""Validate port's extra DHCP options.
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:param port: A neutron port.
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:returns: A PortExtraDHCPValidation object.
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"""
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# Get the right option mappings according to the port's vnic_type
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vnic_type = port.get(portbindings.VNIC_TYPE, portbindings.VNIC_NORMAL)
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mapping = constants.SUPPORTED_DHCP_OPTS_MAPPING
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if vnic_type == portbindings.VNIC_BAREMETAL:
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mapping = constants.SUPPORTED_BM_DHCP_OPTS_MAPPING
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invalid = {const.IP_VERSION_4: [], const.IP_VERSION_6: []}
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failed = False
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for edo in port.get(edo_ext.EXTRADHCPOPTS, []):
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ip_version = edo['ip_version']
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opt_name = edo['opt_name']
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# If DHCP is disabled for this port via this special option,
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# always succeed the validation
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if _is_dhcp_disabled(edo):
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failed = False
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break
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if opt_name not in mapping[ip_version]:
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invalid[ip_version].append(opt_name)
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failed = True
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return PortExtraDHCPValidation(
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failed=failed,
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invalid_ipv4=invalid[const.IP_VERSION_4] if failed else [],
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invalid_ipv6=invalid[const.IP_VERSION_6] if failed else [])
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def is_dhcp_option_quoted(opt_value):
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return opt_value.startswith('"') and opt_value.endswith('"')
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def get_lsp_dhcp_opts(port, ip_version):
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# Get dhcp options from Neutron port, for setting DHCP_Options row
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# in OVN.
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lsp_dhcp_disabled = False
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lsp_dhcp_opts = {}
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vnic_type = port.get(portbindings.VNIC_TYPE, portbindings.VNIC_NORMAL)
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is_baremetal = vnic_type == portbindings.VNIC_BAREMETAL
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if is_network_device_port(port):
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lsp_dhcp_disabled = True
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elif is_baremetal and ovn_conf.is_ovn_dhcp_disabled_for_baremetal():
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lsp_dhcp_disabled = True
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else:
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mapping = (constants.SUPPORTED_BM_DHCP_OPTS_MAPPING[ip_version]
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if is_baremetal else
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constants.SUPPORTED_DHCP_OPTS_MAPPING[ip_version])
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for edo in port.get(edo_ext.EXTRADHCPOPTS, []):
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if edo['ip_version'] != ip_version:
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continue
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if _is_dhcp_disabled(edo):
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# OVN native DHCP is disabled on this port
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lsp_dhcp_disabled = True
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# Make sure return value behavior not depends on the order and
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# content of the extra DHCP options for the port
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lsp_dhcp_opts.clear()
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break
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if edo['opt_name'] not in mapping:
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LOG.warning('The DHCP option %(opt_name)s on port %(port)s '
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'is not suppported by OVN, ignoring it',
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{'opt_name': edo['opt_name'], 'port': port['id']})
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continue
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opt = mapping[edo['opt_name']]
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if (opt in constants.OVN_STR_TYPE_DHCP_OPTS and
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not is_dhcp_option_quoted(edo['opt_value'])):
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edo['opt_value'] = '"%s"' % edo['opt_value']
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lsp_dhcp_opts[opt] = edo['opt_value']
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return (lsp_dhcp_disabled, lsp_dhcp_opts)
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def is_lsp_trusted(port):
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return n_utils.is_port_trusted(port) if port.get('device_owner') else False
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def is_lsp_ignored(port):
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# Since the floating IP port is not bound to any chassis, packets from vm
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# destined to floating IP will be dropped. To overcome this, we do not
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# create/update floating IP port in OVN.
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return port.get('device_owner') in [const.DEVICE_OWNER_FLOATINGIP]
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def get_lsp_security_groups(port, skip_trusted_port=True):
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# In other agent link OVS, skipping trusted port is processed in security
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# groups RPC. We haven't that step, so we do it here.
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return [] if (skip_trusted_port and is_lsp_trusted(port)
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) else port.get('security_groups', [])
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def is_snat_enabled(router):
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return router.get(l3.EXTERNAL_GW_INFO, {}).get('enable_snat', True)
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def is_port_security_enabled(port):
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return port.get(psec.PORTSECURITY)
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def is_security_groups_enabled(port):
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return port.get(constants.PORT_SECURITYGROUPS)
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def validate_and_get_data_from_binding_profile(port):
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"""Validate the port binding profile
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:param port: (dict) Neutron port dictionary.
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:returns: (namedtuple BPInfo: dict, string, list) a tuple with the
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dictionary of the port profile, the VNIC type and a list of port
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capabilities.
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"""
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if (constants.OVN_PORT_BINDING_PROFILE not in port or
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not validators.is_attr_set(
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port[constants.OVN_PORT_BINDING_PROFILE])):
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BPInfo({}, None, [])
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param_set = {}
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param_dict = {}
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vnic_type = port.get(portbindings.VNIC_TYPE, portbindings.VNIC_NORMAL)
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# A port's capabilities is listed as part of the binding profile, but we
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# treat it separately and do not want it to be included in the generic
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# validation.
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binding_profile = copy.deepcopy(port[constants.OVN_PORT_BINDING_PROFILE])
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capabilities = binding_profile.pop(constants.PORT_CAP_PARAM, [])
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if not isinstance(capabilities, list):
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msg = _('Invalid binding:profile. %s must be of type list.'
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) % constants.PORT_CAP_PARAM
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raise n_exc.InvalidInput(error_message=msg)
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# Note that only the keys mentioned in each parameter set, as defined in
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# constants.OVN_PORT_BINDING_PROFILE_PARAMS, will be evaluated.
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#
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# Any surplus keys provided by Nova will be ignored and pruned from the
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# Dict returned by this function.
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for pbp_param_set in constants.OVN_PORT_BINDING_PROFILE_PARAMS:
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if pbp_param_set.vnic_type:
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if pbp_param_set.vnic_type != vnic_type:
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continue
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if capabilities and pbp_param_set.capability not in capabilities:
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continue
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param_set = pbp_param_set.param_set
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param_keys = param_set.keys()
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for param_key in param_keys:
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try:
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param_dict[param_key] = binding_profile[param_key]
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except KeyError:
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pass
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if len(param_dict) == 0:
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continue
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if param_keys - binding_profile.keys():
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msg = _('Invalid binding:profile. %s are all '
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'required.') % param_keys
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raise n_exc.InvalidInput(error_message=msg)
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break
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if not param_dict:
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return BPInfo({}, vnic_type, capabilities)
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# With this example param_set:
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#
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# param_set = {
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# 'do_not_check_this_key': None,
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# 'pci_slot': [str],
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# 'physical_network': [str, type(None)]
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# }
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#
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# We confirm that each binding_profile key is of one of the listed types,
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# allowing validation of polymorphic entries.
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#
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# 'physical_network' is polymorphic because: When a VNIC_REMOTE_MANAGED or
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# VNIC_DIRECT with PORT_CAP_SWITCHDEV capability port is attached to a
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# project network backed by an overlay (tunneled) network the value will be
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# 'None'. For the case of ports attached to a project network backed by
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# VLAN the value will be of type ``str``. This comes from Nova and is
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# provided in the ``physical_network`` tag in the Nova PCI Passthrough
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# configuration.
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#
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# In the above example the type of the value behind 'do_not_check_this_key'
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# will not be checked, 'pci_slot' must be ``str``, 'physical_network must
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# be either ``str`` or ``NoneType``.
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for param_key, param_types in param_set.items():
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if param_types is None:
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continue
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param_value = param_dict[param_key]
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for param_type in param_types:
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if isinstance(param_value, param_type):
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break
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else:
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msg = _('Invalid binding:profile. %(key)s %(value)s '
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'value invalid type') % {'key': param_key,
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'value': param_value}
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raise n_exc.InvalidInput(error_message=msg)
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# Make sure we can successfully look up the port indicated by
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# parent_name. Just let it raise the right exception if there is a
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# problem.
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if 'parent_name' in param_set:
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plugin = directory.get_plugin()
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plugin.get_port(n_context.get_admin_context(),
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param_dict['parent_name'])
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if 'tag' in param_set:
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tag = int(param_dict['tag'])
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if tag < 0 or tag > 4095:
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msg = _('Invalid binding:profile. tag "%s" must be '
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'an integer between 0 and 4095, inclusive') % tag
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raise n_exc.InvalidInput(error_message=msg)
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return BPInfo(param_dict, vnic_type, capabilities)
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def is_dhcp_options_ignored(subnet):
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# Don't insert DHCP_Options entry for v6 subnet with 'SLAAC' as
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# 'ipv6_address_mode', since DHCPv6 shouldn't work for this mode.
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return (subnet['ip_version'] == const.IP_VERSION_6 and
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subnet.get('ipv6_address_mode') == const.IPV6_SLAAC)
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def get_ovn_ipv6_address_mode(address_mode):
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return constants.OVN_IPV6_ADDRESS_MODES[address_mode]
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def get_revision_number(resource, resource_type):
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"""Get the resource's revision number based on its type."""
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if resource_type in (constants.TYPE_NETWORKS,
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constants.TYPE_PORTS,
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constants.TYPE_SECURITY_GROUP_RULES,
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constants.TYPE_ROUTERS,
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constants.TYPE_ROUTER_PORTS,
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constants.TYPE_SECURITY_GROUPS,
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constants.TYPE_FLOATINGIPS, constants.TYPE_SUBNETS):
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return resource['revision_number']
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else:
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raise ovn_exc.UnknownResourceType(resource_type=resource_type)
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def remove_macs_from_lsp_addresses(addresses):
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"""Remove the mac addresses from the Logical_Switch_Port addresses column.
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:param addresses: The list of addresses from the Logical_Switch_Port.
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Example: ["80:fa:5b:06:72:b7 158.36.44.22",
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"ff:ff:ff:ff:ff:ff 10.0.0.2"]
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:returns: A list of IP addresses (v4 and v6)
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"""
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ip_list = []
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for addr in addresses:
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ip_list.extend([x for x in addr.split() if
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(netutils.is_valid_ipv4(x) or
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netutils.is_valid_ipv6(x))])
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return ip_list
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def get_allowed_address_pairs_ip_addresses(port):
|
|
"""Return a list of IP addresses from port's allowed_address_pairs.
|
|
|
|
:param port: A neutron port
|
|
:returns: A list of IP addresses (v4 and v6)
|
|
"""
|
|
return [x['ip_address'] for x in port.get('allowed_address_pairs', [])
|
|
if 'ip_address' in x]
|
|
|
|
|
|
def get_allowed_address_pairs_ip_addresses_from_ovn_port(ovn_port):
|
|
"""Return a list of IP addresses from ovn port.
|
|
|
|
Return a list of IP addresses equivalent of Neutron's port
|
|
allowed_address_pairs column using the data in the OVN port.
|
|
|
|
:param ovn_port: A OVN port
|
|
:returns: A list of IP addresses (v4 and v6)
|
|
"""
|
|
addresses = remove_macs_from_lsp_addresses(ovn_port.addresses)
|
|
port_security = remove_macs_from_lsp_addresses(ovn_port.port_security)
|
|
return [x for x in port_security if x not in addresses]
|
|
|
|
|
|
def get_ovn_port_security_groups(ovn_port, skip_trusted_port=True):
|
|
info = {'security_groups': ovn_port.external_ids.get(
|
|
constants.OVN_SG_IDS_EXT_ID_KEY, '').split(),
|
|
'device_owner': ovn_port.external_ids.get(
|
|
constants.OVN_DEVICE_OWNER_EXT_ID_KEY, '')}
|
|
return get_lsp_security_groups(info, skip_trusted_port=skip_trusted_port)
|
|
|
|
|
|
def get_ovn_port_addresses(ovn_port):
|
|
addresses = remove_macs_from_lsp_addresses(ovn_port.addresses)
|
|
port_security = remove_macs_from_lsp_addresses(ovn_port.port_security)
|
|
return list(set(addresses + port_security))
|
|
|
|
|
|
def get_virtual_port_parents(nb_idl, virtual_ip, network_id, port_id):
|
|
ls = nb_idl.ls_get(ovn_name(network_id)).execute(check_error=True)
|
|
return [lsp.name for lsp in ls.ports
|
|
if lsp.name != port_id and
|
|
virtual_ip in get_ovn_port_addresses(lsp)]
|
|
|
|
|
|
def sort_ips_by_version(addresses):
|
|
ip_map = {'ip4': [], 'ip6': []}
|
|
for addr in addresses:
|
|
ip_version = netaddr.IPNetwork(addr).version
|
|
ip_map['ip%d' % ip_version].append(addr)
|
|
return ip_map
|
|
|
|
|
|
def is_lsp_router_port(port):
|
|
return port.get('device_owner') in const.ROUTER_PORT_OWNERS
|
|
|
|
|
|
def get_lrouter_ext_gw_static_route(ovn_router):
|
|
return [route for route in getattr(ovn_router, 'static_routes', []) if
|
|
strutils.bool_from_string(getattr(
|
|
route, 'external_ids', {}).get(
|
|
constants.OVN_ROUTER_IS_EXT_GW, 'false'))]
|
|
|
|
|
|
def get_lrouter_snats(ovn_router):
|
|
return [n for n in getattr(ovn_router, 'nat', []) if n.type == 'snat']
|
|
|
|
|
|
def get_lrouter_non_gw_routes(ovn_router):
|
|
routes = []
|
|
for route in getattr(ovn_router, 'static_routes', []):
|
|
external_ids = getattr(route, 'external_ids', {})
|
|
if strutils.bool_from_string(
|
|
external_ids.get(constants.OVN_ROUTER_IS_EXT_GW, 'false')):
|
|
continue
|
|
|
|
routes.append({'destination': route.ip_prefix,
|
|
'nexthop': route.nexthop})
|
|
return routes
|
|
|
|
|
|
def is_ovn_l3(l3_plugin):
|
|
return hasattr(l3_plugin, '_ovn_client_inst')
|
|
|
|
|
|
def get_system_dns_resolvers(resolver_file=DNS_RESOLVER_FILE):
|
|
resolvers = []
|
|
if not os.path.exists(resolver_file):
|
|
return resolvers
|
|
|
|
with open(resolver_file, 'r') as rconf:
|
|
for line in rconf.readlines():
|
|
if not line.startswith('nameserver'):
|
|
continue
|
|
|
|
line = line.split('nameserver')[1].strip()
|
|
valid_ip = (netutils.is_valid_ipv4(line, strict=True) or
|
|
netutils.is_valid_ipv6(line))
|
|
if valid_ip:
|
|
resolvers.append(line)
|
|
|
|
return resolvers
|
|
|
|
|
|
def get_dhcp_dns_servers(subnet, ip_version=const.IP_VERSION_4):
|
|
"""Retrieve the DHCP option DNS servers
|
|
|
|
The DHCP should not announce any DNS resolver at all on the subnet if any
|
|
configured DNS server is "0.0.0.0" (IPv4) or "::" (IPv6).
|
|
https://docs.openstack.org/neutron/latest/admin/config-dns-res.html
|
|
"""
|
|
def filter_ips(ips, ip_version=const.IP_VERSION_4):
|
|
return [ip for ip in ips
|
|
if netaddr.IPAddress(ip).version == ip_version]
|
|
|
|
dns_servers = (subnet.get('dns_nameservers') or
|
|
filter_ips(ovn_conf.get_dns_servers(), ip_version) or
|
|
filter_ips(get_system_dns_resolvers(), ip_version))
|
|
|
|
if common_utils.is_dns_servers_any_address(dns_servers, ip_version):
|
|
return []
|
|
|
|
return dns_servers
|
|
|
|
|
|
def get_port_subnet_ids(port):
|
|
fixed_ips = list(port['fixed_ips'])
|
|
return [f['subnet_id'] for f in fixed_ips]
|
|
|
|
|
|
def get_method_class(method):
|
|
if not inspect.ismethod(method):
|
|
return
|
|
return method.__self__.__class__
|
|
|
|
|
|
def ovn_metadata_name(id_):
|
|
"""Return the OVN metadata name based on an id."""
|
|
return 'metadata-%s' % id_
|
|
|
|
|
|
def is_gateway_chassis_invalid(chassis_name, gw_chassis,
|
|
physnet, chassis_physnets,
|
|
az_hints, chassis_with_azs):
|
|
"""Check if gateway chassis is invalid
|
|
|
|
@param chassis_name: gateway chassis name
|
|
@type chassis_name: string
|
|
@param gw_chassis: List of gateway chassis in the system
|
|
@type gw_chassis: []
|
|
@param physnet: physical network associated to chassis_name
|
|
@type physnet: string
|
|
@param chassis_physnets: Dictionary linking chassis with their physnets
|
|
@type chassis_physnets: {}
|
|
@param az_hints: available zone hints associated to chassis_name
|
|
@type az_hints: []
|
|
@param chassis_with_azs: Dictionary linking chassis with their azs
|
|
@type chassis_with_azs: {}
|
|
@return Boolean
|
|
"""
|
|
|
|
if chassis_name == constants.OVN_GATEWAY_INVALID_CHASSIS:
|
|
return True
|
|
elif chassis_name not in chassis_physnets:
|
|
return True
|
|
elif physnet and physnet not in chassis_physnets.get(chassis_name):
|
|
return True
|
|
elif gw_chassis and chassis_name not in gw_chassis:
|
|
return True
|
|
elif az_hints and not set(az_hints) & set(chassis_with_azs.get(
|
|
chassis_name, [])):
|
|
return True
|
|
return False
|
|
|
|
|
|
def is_provider_network(network):
|
|
return network.get(provider_net.PHYSICAL_NETWORK, False)
|
|
|
|
|
|
def is_external_network(network):
|
|
return network.get(external_net.EXTERNAL, False)
|
|
|
|
|
|
def compute_address_pairs_diff(ovn_port, neutron_port):
|
|
"""Compute the differences in the allowed_address_pairs field."""
|
|
ovn_ap = get_allowed_address_pairs_ip_addresses_from_ovn_port(
|
|
ovn_port)
|
|
neutron_ap = get_allowed_address_pairs_ip_addresses(neutron_port)
|
|
added = set(neutron_ap) - set(ovn_ap)
|
|
removed = set(ovn_ap) - set(neutron_ap)
|
|
return AddrPairsDiff(added, removed, changed=any(added or removed))
|
|
|
|
|
|
def get_ovn_cms_options(chassis):
|
|
"""Return the list of CMS options in a Chassis."""
|
|
return [opt.strip() for opt in get_ovn_chassis_other_config(chassis).get(
|
|
constants.OVN_CMS_OPTIONS, '').split(',')]
|
|
|
|
|
|
def is_gateway_chassis(chassis):
|
|
"""Check if the given chassis is a gateway chassis"""
|
|
return constants.CMS_OPT_CHASSIS_AS_GW in get_ovn_cms_options(chassis)
|
|
|
|
|
|
def get_port_capabilities(port):
|
|
"""Return a list of port's capabilities"""
|
|
return port.get(portbindings.PROFILE, {}).get(constants.PORT_CAP_PARAM, [])
|
|
|
|
|
|
def get_port_id_from_gwc_row(row):
|
|
"""Return a port_id from gwc row
|
|
|
|
The Gateway_Chassis row stores router port_id in
|
|
the row name attribute:
|
|
|
|
<prefix>-<port_id>_<chassis_id>
|
|
|
|
:param row: A Gateway_Chassis table row.
|
|
:returns: String containing router port_id.
|
|
"""
|
|
return constants.RE_PORT_FROM_GWC.search(row.name).group(2)
|
|
|
|
|
|
def get_chassis_availability_zones(chassis):
|
|
"""Return a list of availability zones from a given OVN Chassis."""
|
|
azs = set()
|
|
if not chassis:
|
|
return azs
|
|
|
|
opt_key = constants.CMS_OPT_AVAILABILITY_ZONES + '='
|
|
for opt in get_ovn_cms_options(chassis):
|
|
if not opt.startswith(opt_key):
|
|
continue
|
|
values = opt.split('=')[1]
|
|
azs = {az.strip() for az in values.split(':') if az.strip()}
|
|
break
|
|
return azs
|
|
|
|
|
|
def get_chassis_in_azs(chassis_list, az_list):
|
|
"""Return a set of Chassis that belongs to the AZs.
|
|
|
|
Given a list of Chassis and a list of availability zones (AZs),
|
|
return a set of Chassis that belongs to one or more AZs.
|
|
|
|
:param chassis_list: A list of Chassis objects
|
|
:param az_list: A list of availability zones
|
|
:returns: A set of Chassis names
|
|
"""
|
|
chassis = set()
|
|
for ch in chassis_list:
|
|
chassis_azs = get_chassis_availability_zones(ch)
|
|
if chassis_azs.intersection(az_list):
|
|
chassis.add(ch.name)
|
|
return chassis
|
|
|
|
|
|
def get_gateway_chassis_without_azs(chassis_list):
|
|
"""Return a set of Chassis that does not belong to any AZs.
|
|
|
|
Filter a list of Chassis and return only the Chassis that does not
|
|
belong to any availability zones.
|
|
|
|
:param chassis_list: A list of Chassis objects
|
|
:returns: A set of Chassis names
|
|
"""
|
|
return {ch.name for ch in chassis_list if is_gateway_chassis(ch) and not
|
|
get_chassis_availability_zones(ch)}
|
|
|
|
|
|
def parse_ovn_lb_port_forwarding(ovn_rtr_lb_pfs):
|
|
"""Return a dictionary compatible with port forwarding from OVN lb."""
|
|
result = {}
|
|
for ovn_lb in ovn_rtr_lb_pfs:
|
|
ext_ids = ovn_lb.external_ids
|
|
fip_id = ext_ids.get(constants.OVN_FIP_EXT_ID_KEY)
|
|
protocol = (ovn_lb.protocol[0]
|
|
if ovn_lb.protocol else ovsdbapp_const.PROTO_TCP)
|
|
fip_dict = result.get(fip_id, {})
|
|
fip_dict_proto = fip_dict.get(protocol, set())
|
|
ovn_vips = ovn_lb.vips
|
|
for vip, ips in ovn_vips.items():
|
|
for ip in ips.split(','):
|
|
fip_dict_proto.add("{} {}".format(vip, ip))
|
|
fip_dict[protocol] = fip_dict_proto
|
|
result[fip_id] = fip_dict
|
|
return result
|
|
|
|
|
|
def get_network_name_from_datapath(datapath):
|
|
return datapath.external_ids['name'].replace('neutron-', '')
|
|
|
|
|
|
def is_port_external(port):
|
|
# This port is represented in OVN DB as lsp.type=external
|
|
capabilities = []
|
|
vnic_type = portbindings.VNIC_NORMAL
|
|
|
|
if isinstance(port, dict):
|
|
capabilities = get_port_capabilities(port)
|
|
vnic_type = port.get(portbindings.VNIC_TYPE,
|
|
portbindings.VNIC_NORMAL)
|
|
else:
|
|
if isinstance(port, models_v2.Port):
|
|
bindings = port.port_bindings
|
|
elif isinstance(port, ports_obj.Port):
|
|
bindings = port.bindings
|
|
else: # What else could be "port"?
|
|
bindings = []
|
|
|
|
if bindings:
|
|
profile = bindings[0].get('profile')
|
|
if profile:
|
|
# DB object, not OVO, stores the dict in JSON.
|
|
profile = (jsonutils.loads(profile) if isinstance(profile, str)
|
|
else profile)
|
|
capabilities = profile.get(constants.PORT_CAP_PARAM, [])
|
|
vnic_type = bindings[0].get('vnic_type', portbindings.VNIC_NORMAL)
|
|
|
|
return (vnic_type in constants.EXTERNAL_PORT_TYPES and
|
|
constants.PORT_CAP_SWITCHDEV not in capabilities)
|
|
|
|
|
|
def retry(max_=None):
|
|
def inner(func):
|
|
def wrapper(*args, **kwargs):
|
|
local_max = max_ or ovn_conf.get_ovn_ovsdb_retry_max_interval()
|
|
return tenacity.retry(
|
|
wait=tenacity.wait_exponential(max=local_max),
|
|
reraise=True)(func)(*args, **kwargs)
|
|
return wrapper
|
|
return inner
|
|
|
|
|
|
def create_neutron_pg_drop():
|
|
"""Create neutron_pg_drop Port Group.
|
|
|
|
It uses ovsdb-client to send to server transact command using ovsdb
|
|
protocol that checks if the neutron_pg_drop row exists. If it exists
|
|
it times out immediatelly. If it doesn't exist then it creates the
|
|
Port_Group and default ACLs to drop all ingress and egress traffic.
|
|
"""
|
|
command = [
|
|
"OVN_Northbound", {
|
|
"op": "wait",
|
|
"timeout": 0,
|
|
"table": "Port_Group",
|
|
"where": [
|
|
["name", "==", constants.OVN_DROP_PORT_GROUP_NAME]
|
|
],
|
|
"until": "==",
|
|
"rows": []
|
|
}, {
|
|
"op": "insert",
|
|
"table": "ACL",
|
|
"row": {
|
|
"action": "drop",
|
|
"direction": "to-lport",
|
|
"match": "outport == @neutron_pg_drop && ip",
|
|
"priority": 1001
|
|
},
|
|
"uuid-name": "droptoport"
|
|
}, {
|
|
"op": "insert",
|
|
"table": "ACL",
|
|
"row": {
|
|
"action": "drop",
|
|
"direction": "from-lport",
|
|
"match": "inport == @neutron_pg_drop && ip",
|
|
"priority": 1001
|
|
},
|
|
"uuid-name": "dropfromport"
|
|
}, {
|
|
"op": "insert",
|
|
"table": "Port_Group",
|
|
"row": {
|
|
"name": constants.OVN_DROP_PORT_GROUP_NAME,
|
|
"acls": ["set", [
|
|
["named-uuid", "droptoport"],
|
|
["named-uuid", "dropfromport"]
|
|
]]
|
|
}
|
|
}]
|
|
|
|
OvsdbClientTransactCommand.run(command)
|
|
|
|
|
|
def get_ovn_chassis_other_config(chassis):
|
|
# NOTE(ralonsoh): LP#1990229 to be removed when min OVN version is 22.09
|
|
try:
|
|
return chassis.other_config
|
|
except AttributeError:
|
|
return chassis.external_ids
|
|
|
|
|
|
def get_subnets_address_scopes(context, subnets, fixed_ips, ml2_plugin):
|
|
"""Returns the IPv4 and IPv6 address scopes of several subnets.
|
|
|
|
The subnets hosted on the same network must be allocated from the same
|
|
subnet pool (from ``NetworkSubnetPoolAffinityError`` exception). That
|
|
applies per IP version (it means it is possible to have two subnet pools,
|
|
one for IPv4 and one for IPv6).
|
|
|
|
:param context: neutron api request context
|
|
:param subnets: (list of dict) subnet dictionaries
|
|
:param fixed_ips: (list of dict) fixed IPs of several subnets (usually
|
|
belonging to a network but not mandatory)
|
|
:param ml2_plugin: (``Ml2Plugin``) ML2 plugin instance
|
|
:return: (tuple of 2 strings) IPv4 and IPv6 address scope IDs
|
|
"""
|
|
address4_scope_id, address6_scope_id = '', ''
|
|
if not subnets:
|
|
return address4_scope_id, address6_scope_id
|
|
|
|
subnets_by_id = {subnet['id']: subnet for subnet in subnets}
|
|
for fixed_ip in fixed_ips:
|
|
subnet_id = fixed_ip.get('subnet_id')
|
|
subnet = subnets_by_id.get(subnet_id)
|
|
if not subnet or not subnet['subnetpool_id']:
|
|
continue
|
|
|
|
try:
|
|
subnet_pool = ml2_plugin.get_subnetpool(context,
|
|
id=subnet['subnetpool_id'])
|
|
if subnet_pool['address_scope_id']:
|
|
if subnet_pool['ip_version'] == const.IP_VERSION_4:
|
|
address4_scope_id = subnet_pool['address_scope_id']
|
|
else:
|
|
address6_scope_id = subnet_pool['address_scope_id']
|
|
except n_exc.SubnetPoolNotFound:
|
|
# swallow the exception and just continue if the
|
|
# lookup failed
|
|
pass
|
|
|
|
return address4_scope_id, address6_scope_id
|
|
|
|
|
|
def get_port_type_virtual_and_parents(subnets, fixed_ips, network_id, port_id,
|
|
nb_idl):
|
|
"""Returns if a port is type virtual and its corresponding parents.
|
|
|
|
:param subnets: (list of dict) subnet dictionaries
|
|
:param fixed_ips: (list of dict) fixed IPs of several subnets (usually
|
|
belonging to a network but not mandatory)
|
|
:param network_id: (string) network ID
|
|
:param port_id: (string) port ID
|
|
:param nb_idl: (``OvsdbNbOvnIdl``) OVN Northbound IDL
|
|
:return: (tuple, three strings) (1) the virtual type ('' if not virtual),
|
|
(2) the virtual IP address and (3) the virtual parents
|
|
"""
|
|
port_type, virtual_ip, virtual_parents = '', None, None
|
|
if not subnets:
|
|
return port_type, virtual_ip, virtual_parents
|
|
|
|
subnets_by_id = {subnet['id'] for subnet in subnets}
|
|
for fixed_ip in fixed_ips:
|
|
if fixed_ip.get('subnet_id') not in subnets_by_id:
|
|
continue
|
|
|
|
# Check if the port being created is a virtual port
|
|
parents = get_virtual_port_parents(
|
|
nb_idl, fixed_ip['ip_address'], network_id, port_id)
|
|
if not parents:
|
|
continue
|
|
|
|
port_type = constants.LSP_TYPE_VIRTUAL
|
|
virtual_ip = fixed_ip['ip_address']
|
|
virtual_parents = ','.join(parents)
|
|
break
|
|
|
|
return port_type, virtual_ip, virtual_parents
|
|
|
|
|
|
def determine_bind_host(sb_idl, port, port_context=None):
|
|
"""Determine which host the port should be bound to.
|
|
|
|
Traditionally it has been Nova's responsibility to create Virtual
|
|
Interfaces (VIFs) as part of instance life cycle, and subsequently
|
|
manage plug/unplug operations on the Open vSwitch integration bridge.
|
|
For the traditional topology the bind host will be the same as the
|
|
hypervisor hosting the instance.
|
|
|
|
With the advent of SmartNIC DPUs which are connected to multiple
|
|
distinct CPUs we can have a topology where the instance runs on one
|
|
host and Open vSwitch and OVN runs on a different host, the SmartNIC
|
|
DPU control plane CPU. In the SmartNIC DPU topology the bind host will
|
|
be different than the hypervisor host.
|
|
|
|
This helper accepts both a port Dict and optionally a PortContext
|
|
instance so that it can be used both before and after a port is bound.
|
|
|
|
:param sb_idl: OVN Southbound IDL
|
|
:type sb_idl: ``OvsdbSbOvnIdl``
|
|
:param port: Port Dictionary
|
|
:type port: Dict[str,any]
|
|
:param port_context: PortContext instance describing the port
|
|
:type port_context: api.PortContext
|
|
:returns: FQDN or Hostname to bind port to.
|
|
:rtype: str
|
|
:raises: n_exc.InvalidInput, RuntimeError
|
|
"""
|
|
# Note that we use port_context.host below when called from bind_port
|
|
port = port_context.current if port_context else port
|
|
vnic_type = port.get(portbindings.VNIC_TYPE, portbindings.VNIC_NORMAL)
|
|
if vnic_type != portbindings.VNIC_REMOTE_MANAGED:
|
|
# The ``PortContext`` ``host`` property contains handling of
|
|
# special cases.
|
|
return port_context.host if port_context else port.get(
|
|
portbindings.HOST_ID, '')
|
|
|
|
bp_info = validate_and_get_data_from_binding_profile(port)
|
|
if constants.VIF_DETAILS_CARD_SERIAL_NUMBER in bp_info.bp_param:
|
|
return sb_idl.get_chassis_by_card_serial_from_cms_options(
|
|
bp_info.bp_param[
|
|
constants.VIF_DETAILS_CARD_SERIAL_NUMBER]).hostname
|
|
return ''
|
|
|
|
|
|
def validate_port_binding_and_virtual_port(
|
|
port_context, nb_idl, sb_idl, ml2_plugin, port):
|
|
"""If the port is type=virtual and it is bound, raise BadRequest"""
|
|
if not determine_bind_host(sb_idl, port, port_context=port_context):
|
|
# The port is not bound, exit.
|
|
return
|
|
|
|
fixed_ips = port.get('fixed_ips', [])
|
|
subnet_ids = set([fixed_ip['subnet_id'] for fixed_ip in fixed_ips
|
|
if 'subnet_id' in fixed_ip])
|
|
if not subnet_ids:
|
|
# If the port has no fixed_ips/subnets, it cannot be virtual.
|
|
return
|
|
|
|
subnets = ml2_plugin.get_subnets(port_context.plugin_context,
|
|
filters={'id': list(subnet_ids)})
|
|
port_type, _, _ = get_port_type_virtual_and_parents(
|
|
subnets, fixed_ips, port['network_id'], port['id'], nb_idl)
|
|
if port_type == constants.LSP_TYPE_VIRTUAL:
|
|
raise n_exc.BadRequest(
|
|
resource='port',
|
|
msg='A virtual logical switch port cannot be bound to a host')
|
|
|
|
|
|
def get_requested_chassis(requested_chassis):
|
|
"""Returns a list with the items in the LSP.options:requested-chassis"""
|
|
if isinstance(requested_chassis, str):
|
|
return requested_chassis.split(',')
|
|
return []
|