x/vmware-nsx
Code Issues Proposed changes
vmware-nsx/vmware_nsx/plugins/common_v3/plugin.py
Anna Khmelnitsky ac06b1b985 NSX|P: Update slaac config on router 
In neutron, slaac is enabled per subnet. However on policy
slaac is router configuration.
In order to avoid another passthrough API, router will be
configured with slaac profile if at least one of its subnet
has slaac enabled.

Change-Id: I7a055aa4d73425011c22248c8d7d9d2e0a383dc8
2019-04-10 13:35:07 -07:00

2655 lines
126 KiB
Python
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# Copyright 2018 VMware, Inc.
# All Rights Reserved
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import netaddr
from oslo_config import cfg
from oslo_db import exception as db_exc
from oslo_log import log as logging
from oslo_utils import excutils
from sqlalchemy import exc as sql_exc
import webob.exc
from six import moves
from six import string_types
from neutron.db import agents_db
from neutron.db import agentschedulers_db
from neutron.db import allowedaddresspairs_db as addr_pair_db
from neutron.db.availability_zone import router as router_az_db
from neutron.db import db_base_plugin_v2
from neutron.db import dns_db
from neutron.db import external_net_db
from neutron.db import extradhcpopt_db
from neutron.db import extraroute_db
from neutron.db import l3_attrs_db
from neutron.db import l3_db
from neutron.db import l3_gwmode_db
from neutron.db import models_v2
from neutron.db import portbindings_db
from neutron.db import portsecurity_db
from neutron.db import securitygroups_db
from neutron.db import vlantransparent_db
from neutron.extensions import securitygroup as ext_sg
from neutron_lib.agent import topics
from neutron_lib.api.definitions import allowedaddresspairs as addr_apidef
from neutron_lib.api.definitions import availability_zone as az_def
from neutron_lib.api.definitions import external_net as extnet_apidef
from neutron_lib.api.definitions import extra_dhcp_opt as ext_edo
from neutron_lib.api.definitions import port_security as psec
from neutron_lib.api.definitions import portbindings as pbin
from neutron_lib.api.definitions import provider_net as pnet
from neutron_lib.api import faults
from neutron_lib.api import validators
from neutron_lib.api.validators import availability_zone as az_validator
from neutron_lib import constants
from neutron_lib.db import api as db_api
from neutron_lib.db import utils as db_utils
from neutron_lib import exceptions as n_exc
from neutron_lib.exceptions import allowedaddresspairs as addr_exc
from neutron_lib.exceptions import l3 as l3_exc
from neutron_lib.exceptions import port_security as psec_exc
from neutron_lib.plugins import utils as plugin_utils
from neutron_lib import rpc as n_rpc
from neutron_lib.services.qos import constants as qos_consts
from neutron_lib.utils import helpers
from neutron_lib.utils import net as nl_net_utils
from vmware_nsx.common import availability_zones as nsx_com_az
from vmware_nsx.common import exceptions as nsx_exc
from vmware_nsx.common import locking
from vmware_nsx.common import nsx_constants
from vmware_nsx.common import utils
from vmware_nsx.db import db as nsx_db
from vmware_nsx.db import extended_security_group as extended_sec
from vmware_nsx.db import extended_security_group_rule as extend_sg_rule
from vmware_nsx.db import maclearning as mac_db
from vmware_nsx.db import nsx_portbindings_db as pbin_db
from vmware_nsx.extensions import advancedserviceproviders as as_providers
from vmware_nsx.extensions import maclearning as mac_ext
from vmware_nsx.extensions import providersecuritygroup as provider_sg
from vmware_nsx.extensions import secgroup_rule_local_ip_prefix as sg_prefix
from vmware_nsx.plugins.common import plugin
from vmware_nsx.services.qos.common import utils as qos_com_utils
from vmware_nsx.services.vpnaas.nsxv3 import ipsec_utils
from vmware_nsxlib.v3 import exceptions as nsx_lib_exc
from vmware_nsxlib.v3 import nsx_constants as nsxlib_consts
from vmware_nsxlib.v3 import utils as nsxlib_utils
LOG = logging.getLogger(__name__)
# NOTE(asarfaty): the order of inheritance here is important. in order for the
# QoS notification to work, the AgentScheduler init must be called first
# NOTE(arosen): same is true with the ExtendedSecurityGroupPropertiesMixin
# this needs to be above securitygroups_db.SecurityGroupDbMixin.
# FIXME(arosen): we can solve this inheritance order issue by just mixining in
# the classes into a new class to handle the order correctly.
class NsxPluginV3Base(agentschedulers_db.AZDhcpAgentSchedulerDbMixin,
addr_pair_db.AllowedAddressPairsMixin,
plugin.NsxPluginBase,
extended_sec.ExtendedSecurityGroupPropertiesMixin,
pbin_db.NsxPortBindingMixin,
extend_sg_rule.ExtendedSecurityGroupRuleMixin,
securitygroups_db.SecurityGroupDbMixin,
external_net_db.External_net_db_mixin,
extraroute_db.ExtraRoute_db_mixin,
router_az_db.RouterAvailabilityZoneMixin,
l3_gwmode_db.L3_NAT_db_mixin,
portbindings_db.PortBindingMixin,
portsecurity_db.PortSecurityDbMixin,
extradhcpopt_db.ExtraDhcpOptMixin,
dns_db.DNSDbMixin,
vlantransparent_db.Vlantransparent_db_mixin,
mac_db.MacLearningDbMixin,
l3_attrs_db.ExtraAttributesMixin,
nsx_com_az.NSXAvailabilityZonesPluginCommon):
"""Common methods for NSX-V3 plugins (NSX-V3 & Policy)"""
def __init__(self):
super(NsxPluginV3Base, self).__init__()
self._network_vlans = plugin_utils.parse_network_vlan_ranges(
self._get_conf_attr('network_vlan_ranges'))
self._native_dhcp_enabled = False
self.start_rpc_listeners_called = False
def _init_native_dhcp(self):
if not self.nsxlib:
self._native_dhcp_enabled = False
return
self._native_dhcp_enabled = True
for az in self.get_azs_list():
if not az._native_dhcp_profile_uuid:
LOG.error("Unable to retrieve DHCP Profile %s for "
"availability zone %s, "
"native DHCP service is not supported",
az.name, az.dhcp_profile)
self._native_dhcp_enabled = False
def _init_native_metadata(self):
if not self.nsxlib:
return
for az in self.get_azs_list():
if not az._native_md_proxy_uuid:
LOG.error("Unable to retrieve Metadata Proxy %s for "
"availability zone %s, "
"native metadata service is not supported",
az.name, az.metadata_proxy)
def _extend_fault_map(self):
"""Extends the Neutron Fault Map.
Exceptions specific to the NSX Plugin are mapped to standard
HTTP Exceptions.
"""
faults.FAULT_MAP.update({nsx_lib_exc.ManagerError:
webob.exc.HTTPBadRequest,
nsx_lib_exc.ServiceClusterUnavailable:
webob.exc.HTTPServiceUnavailable,
nsx_lib_exc.ClientCertificateNotTrusted:
webob.exc.HTTPBadRequest,
nsx_exc.SecurityGroupMaximumCapacityReached:
webob.exc.HTTPBadRequest,
nsx_lib_exc.NsxLibInvalidInput:
webob.exc.HTTPBadRequest,
nsx_exc.NsxENSPortSecurity:
webob.exc.HTTPBadRequest,
nsx_exc.NsxPluginTemporaryError:
webob.exc.HTTPServiceUnavailable
})
def _get_conf_attr(self, attr):
plugin_cfg = getattr(cfg.CONF, self.cfg_group)
return getattr(plugin_cfg, attr)
def _setup_rpc(self):
"""Should be implemented by each plugin"""
pass
def start_rpc_listeners(self):
if self.start_rpc_listeners_called:
# If called more than once - we should not create it again
return self.conn.consume_in_threads()
self._setup_rpc()
self.topic = topics.PLUGIN
self.conn = n_rpc.Connection()
self.conn.create_consumer(self.topic, self.endpoints, fanout=False)
self.conn.create_consumer(topics.REPORTS,
[agents_db.AgentExtRpcCallback()],
fanout=False)
self.start_rpc_listeners_called = True
return self.conn.consume_in_threads()
def _get_interface_subnet(self, context, interface_info):
is_port, is_sub = self._validate_interface_info(interface_info)
subnet_id = None
if is_sub:
subnet_id = interface_info.get('subnet_id')
if not subnet_id:
port_id = interface_info['port_id']
port = self.get_port(context, port_id)
if 'fixed_ips' in port and port['fixed_ips']:
if len(port['fixed_ips'][0]) > 1:
# This should never happen since router interface is per
# IP version, and we allow single fixed ip per ip version
return
subnet_id = port['fixed_ips'][0]['subnet_id']
if subnet_id:
return self.get_subnet(context, subnet_id)
def _get_interface_network(self, context, interface_info):
is_port, is_sub = self._validate_interface_info(interface_info)
if is_port:
net_id = self.get_port(context,
interface_info['port_id'])['network_id']
elif is_sub:
net_id = self.get_subnet(context,
interface_info['subnet_id'])['network_id']
return net_id
def _fix_sg_rule_dict_ips(self, sg_rule):
# 0.0.0.0/# is not a valid entry for local and remote so we need
# to change this to None
if (sg_rule.get('remote_ip_prefix') and
sg_rule['remote_ip_prefix'].startswith('0.0.0.0/')):
sg_rule['remote_ip_prefix'] = None
if (sg_rule.get(sg_prefix.LOCAL_IP_PREFIX) and
validators.is_attr_set(sg_rule[sg_prefix.LOCAL_IP_PREFIX]) and
sg_rule[sg_prefix.LOCAL_IP_PREFIX].startswith('0.0.0.0/')):
sg_rule[sg_prefix.LOCAL_IP_PREFIX] = None
def _validate_interface_address_scope(self, context,
router_db, interface_info):
gw_network_id = (router_db.gw_port.network_id if router_db.gw_port
else None)
subnet = self.get_subnet(context, interface_info['subnet_ids'][0])
if not router_db.enable_snat and gw_network_id:
self._validate_address_scope_for_router_interface(
context.elevated(), router_db.id, gw_network_id, subnet['id'])
def _validate_address_pairs(self, address_pairs):
for pair in address_pairs:
ip = pair.get('ip_address')
if len(ip.split('/')) > 1:
LOG.error("cidr is not supported in allowed address pairs")
raise nsx_exc.InvalidIPAddress(ip_address=ip)
def _validate_number_of_address_pairs(self, port):
address_pairs = port.get(addr_apidef.ADDRESS_PAIRS)
num_allowed_on_backend = nsxlib_consts.NUM_ALLOWED_IP_ADDRESSES
# Counting existing ports to take into account. If no fixed ips
# are defined - we set it to 3 in order to reserve 2 fixed and another
# for DHCP.
existing_fixed_ips = len(port.get('fixed_ips', []))
if existing_fixed_ips == 0:
existing_fixed_ips = 3
else:
existing_fixed_ips += 1
if address_pairs:
if (len(address_pairs) + existing_fixed_ips >=
num_allowed_on_backend):
err_msg = (_(
"Number of Address pairs is limited at the backend to %("
"backend)s. Existing and requested %("
"existing_and_requested)s") %
{'backend': nsxlib_consts.NUM_ALLOWED_IP_ADDRESSES,
'existing_and_requested': existing_fixed_ips +
len(address_pairs)})
raise n_exc.InvalidInput(error_message=err_msg)
def _create_port_address_pairs(self, context, port_data):
(port_security, has_ip) = self._determine_port_security_and_has_ip(
context, port_data)
address_pairs = port_data.get(addr_apidef.ADDRESS_PAIRS)
if validators.is_attr_set(address_pairs):
if not port_security:
raise addr_exc.AddressPairAndPortSecurityRequired()
else:
self._validate_address_pairs(address_pairs)
self._validate_number_of_address_pairs(port_data)
self._process_create_allowed_address_pairs(context, port_data,
address_pairs)
else:
port_data[addr_apidef.ADDRESS_PAIRS] = []
def _provider_sgs_specified(self, port_data):
# checks if security groups were updated adding/modifying
# security groups, port security is set and port has ip
provider_sgs_specified = (validators.is_attr_set(
port_data.get(provider_sg.PROVIDER_SECURITYGROUPS)) and
port_data.get(provider_sg.PROVIDER_SECURITYGROUPS) != [])
return provider_sgs_specified
def _create_port_preprocess_security(
self, context, port, port_data, neutron_db, is_ens_tz_port):
(port_security, has_ip) = self._determine_port_security_and_has_ip(
context, port_data)
port_data[psec.PORTSECURITY] = port_security
# No port security is allowed if the port belongs to an ENS TZ
if (port_security and is_ens_tz_port and
not self._ens_psec_supported()):
raise nsx_exc.NsxENSPortSecurity()
self._process_port_port_security_create(
context, port_data, neutron_db)
# allowed address pair checks
self._create_port_address_pairs(context, port_data)
if port_security and has_ip:
self._ensure_default_security_group_on_port(context, port)
(sgids, psgids) = self._get_port_security_groups_lists(
context, port)
elif (self._check_update_has_security_groups({'port': port_data}) or
self._provider_sgs_specified(port_data) or
self._get_provider_security_groups_on_port(context, port)):
LOG.error("Port has conflicting port security status and "
"security groups")
raise psec_exc.PortSecurityAndIPRequiredForSecurityGroups()
else:
sgids = psgids = []
port_data[ext_sg.SECURITYGROUPS] = (
self._get_security_groups_on_port(context, port))
return port_security, has_ip, sgids, psgids
def _should_validate_port_sec_on_update_port(self, port_data):
# Need to determine if we skip validations for port security.
# This is the edge case when the subnet is deleted.
# This should be called prior to deleting the fixed ip from the
# port data
for fixed_ip in port_data.get('fixed_ips', []):
if 'delete_subnet' in fixed_ip:
return False
return True
def _update_port_preprocess_security(
self, context, port, id, updated_port, is_ens_tz_port,
validate_port_sec=True, direct_vnic_type=False):
delete_addr_pairs = self._check_update_deletes_allowed_address_pairs(
port)
has_addr_pairs = self._check_update_has_allowed_address_pairs(port)
has_security_groups = self._check_update_has_security_groups(port)
delete_security_groups = self._check_update_deletes_security_groups(
port)
# populate port_security setting
port_data = port['port']
if psec.PORTSECURITY not in port_data:
updated_port[psec.PORTSECURITY] = \
self._get_port_security_binding(context, id)
has_ip = self._ip_on_port(updated_port)
# validate port security and allowed address pairs
if not updated_port[psec.PORTSECURITY]:
# has address pairs in request
if has_addr_pairs:
raise addr_exc.AddressPairAndPortSecurityRequired()
elif not delete_addr_pairs:
# check if address pairs are in db
updated_port[addr_apidef.ADDRESS_PAIRS] = (
self.get_allowed_address_pairs(context, id))
if updated_port[addr_apidef.ADDRESS_PAIRS]:
raise addr_exc.AddressPairAndPortSecurityRequired()
if delete_addr_pairs or has_addr_pairs:
self._validate_address_pairs(
updated_port[addr_apidef.ADDRESS_PAIRS])
# delete address pairs and read them in
self._delete_allowed_address_pairs(context, id)
self._process_create_allowed_address_pairs(
context, updated_port,
updated_port[addr_apidef.ADDRESS_PAIRS])
if updated_port[psec.PORTSECURITY] and psec.PORTSECURITY in port_data:
# No port security is allowed if the port belongs to an ENS TZ
if is_ens_tz_port and not self._ens_psec_supported():
raise nsx_exc.NsxENSPortSecurity()
# No port security is allowed if the port has a direct vnic type
if direct_vnic_type:
err_msg = _("Security features are not supported for "
"ports with direct/direct-physical VNIC type")
raise n_exc.InvalidInput(error_message=err_msg)
# checks if security groups were updated adding/modifying
# security groups, port security is set and port has ip
provider_sgs_specified = self._provider_sgs_specified(updated_port)
if (validate_port_sec and
not (has_ip and updated_port[psec.PORTSECURITY])):
if has_security_groups or provider_sgs_specified:
LOG.error("Port has conflicting port security status and "
"security groups")
raise psec_exc.PortSecurityAndIPRequiredForSecurityGroups()
# Update did not have security groups passed in. Check
# that port does not have any security groups already on it.
filters = {'port_id': [id]}
security_groups = (
super(NsxPluginV3Base, self)._get_port_security_group_bindings(
context, filters)
)
if security_groups and not delete_security_groups:
raise psec_exc.PortSecurityPortHasSecurityGroup()
if delete_security_groups or has_security_groups:
# delete the port binding and read it with the new rules.
self._delete_port_security_group_bindings(context, id)
sgids = self._get_security_groups_on_port(context, port)
self._process_port_create_security_group(context, updated_port,
sgids)
if psec.PORTSECURITY in port['port']:
self._process_port_port_security_update(
context, port['port'], updated_port)
return updated_port
def _validate_create_network(self, context, net_data):
"""Validate the parameters of the new network to be created
This method includes general validations that does not depend on
provider attributes, or plugin specific configurations
"""
external = net_data.get(extnet_apidef.EXTERNAL)
is_external_net = validators.is_attr_set(external) and external
with_qos = validators.is_attr_set(
net_data.get(qos_consts.QOS_POLICY_ID))
if with_qos:
self._validate_qos_policy_id(
context, net_data.get(qos_consts.QOS_POLICY_ID))
if is_external_net:
raise nsx_exc.QoSOnExternalNet()
def _validate_update_network(self, context, net_id, original_net,
net_data):
"""Validate the updated parameters of a network
This method includes general validations that does not depend on
provider attributes, or plugin specific configurations
"""
extern_net = self._network_is_external(context, net_id)
with_qos = validators.is_attr_set(
net_data.get(qos_consts.QOS_POLICY_ID))
# Do not allow QoS on external networks
if with_qos:
if extern_net:
raise nsx_exc.QoSOnExternalNet()
self._validate_qos_policy_id(
context, net_data.get(qos_consts.QOS_POLICY_ID))
# Do not support changing external/non-external networks
if (extnet_apidef.EXTERNAL in net_data and
net_data[extnet_apidef.EXTERNAL] != extern_net):
err_msg = _("Cannot change the router:external flag of a network")
raise n_exc.InvalidInput(error_message=err_msg)
is_ens_net = self._is_ens_tz_net(context, net_id)
if is_ens_net:
self._assert_on_ens_with_qos(net_data)
def _assert_on_illegal_port_with_qos(self, device_owner):
# Prevent creating/update port with QoS policy
# on router-interface/network-dhcp ports.
if ((device_owner == l3_db.DEVICE_OWNER_ROUTER_INTF or
device_owner == constants.DEVICE_OWNER_DHCP)):
err_msg = _("Unable to create or update %s port with a QoS "
"policy") % device_owner
LOG.warning(err_msg)
raise n_exc.InvalidInput(error_message=err_msg)
def _assert_on_external_net_with_compute(self, port_data):
# Prevent creating port with device owner prefix 'compute'
# on external networks.
device_owner = port_data.get('device_owner')
if (device_owner is not None and
device_owner.startswith(constants.DEVICE_OWNER_COMPUTE_PREFIX)):
err_msg = _("Unable to update/create a port with an external "
"network")
LOG.warning(err_msg)
raise n_exc.InvalidInput(error_message=err_msg)
def _validate_ens_create_port(self, context, port_data):
qos_selected = validators.is_attr_set(port_data.get(
qos_consts.QOS_POLICY_ID))
if qos_selected:
err_msg = _("Cannot configure QOS on ENS networks")
raise n_exc.InvalidInput(error_message=err_msg)
def _assert_on_port_admin_state(self, port_data, device_owner):
"""Do not allow changing the admin state of some ports"""
if (device_owner == l3_db.DEVICE_OWNER_ROUTER_INTF or
device_owner == l3_db.DEVICE_OWNER_ROUTER_GW):
if port_data.get("admin_state_up") is False:
err_msg = _("admin_state_up=False router ports are not "
"supported")
LOG.warning(err_msg)
raise n_exc.InvalidInput(error_message=err_msg)
def _validate_max_ips_per_port(self, context, fixed_ip_list, device_owner):
"""Validate the number of fixed ips on a port
Do not allow multiple ip addresses on a port since the nsx backend
cannot add multiple static dhcp bindings with the same port
"""
if (device_owner and
nl_net_utils.is_port_trusted({'device_owner': device_owner})):
return
if not validators.is_attr_set(fixed_ip_list):
return
msg = _('Exceeded maximum amount of fixed ips per port and ip version')
if len(fixed_ip_list) > 2:
raise n_exc.InvalidInput(error_message=msg)
if len(fixed_ip_list) < 2:
return
def get_fixed_ip_version(i):
if 'ip_address' in fixed_ip_list[i]:
return netaddr.IPAddress(
fixed_ip_list[i]['ip_address']).version
if 'subnet_id' in fixed_ip_list[i]:
subnet = self.get_subnet(context.elevated(),
fixed_ip_list[i]['subnet_id'])
return subnet['ip_version']
ipver1 = get_fixed_ip_version(0)
ipver2 = get_fixed_ip_version(1)
if ipver1 and ipver2 and ipver1 != ipver2:
# One fixed IP is allowed for each IP version
return
raise n_exc.InvalidInput(error_message=msg)
def _get_subnets_for_fixed_ips_on_port(self, context, port_data):
# get the subnet id from the fixed ips of the port
if 'fixed_ips' in port_data and port_data['fixed_ips']:
subnet_ids = (fixed_ip['subnet_id']
for fixed_ip in port_data['fixed_ips'])
# check only dhcp enabled subnets
return (self.get_subnet(context.elevated(), subnet_id)
for subnet_id in subnet_ids)
def _validate_create_port(self, context, port_data):
self._validate_max_ips_per_port(context,
port_data.get('fixed_ips', []),
port_data.get('device_owner'))
is_external_net = self._network_is_external(
context, port_data['network_id'])
qos_selected = validators.is_attr_set(port_data.get(
qos_consts.QOS_POLICY_ID))
device_owner = port_data.get('device_owner')
# QoS validations
if qos_selected:
self._validate_qos_policy_id(
context, port_data.get(qos_consts.QOS_POLICY_ID))
self._assert_on_illegal_port_with_qos(device_owner)
if is_external_net:
raise nsx_exc.QoSOnExternalNet()
is_ens_tz_port = self._is_ens_tz_port(context, port_data)
if is_ens_tz_port:
self._validate_ens_create_port(context, port_data)
# External network validations:
if is_external_net:
self._assert_on_external_net_with_compute(port_data)
self._assert_on_port_admin_state(port_data, device_owner)
self._validate_extra_dhcp_options(port_data.get(ext_edo.EXTRADHCPOPTS))
def _assert_on_vpn_port_change(self, port_data):
if port_data['device_owner'] == ipsec_utils.VPN_PORT_OWNER:
msg = _('Can not update/delete VPNaaS port %s') % port_data['id']
raise n_exc.InvalidInput(error_message=msg)
def _assert_on_lb_port_fixed_ip_change(self, port_data, orig_dev_own):
if orig_dev_own == constants.DEVICE_OWNER_LOADBALANCERV2:
if "fixed_ips" in port_data and port_data["fixed_ips"]:
msg = _('Can not update Loadbalancer port with fixed IP')
raise n_exc.InvalidInput(error_message=msg)
def _assert_on_device_owner_change(self, port_data, orig_dev_own):
"""Prevent illegal device owner modifications
"""
if orig_dev_own == constants.DEVICE_OWNER_LOADBALANCERV2:
if ("allowed_address_pairs" in port_data and
port_data["allowed_address_pairs"]):
msg = _('Loadbalancer port can not be updated '
'with address pairs')
raise n_exc.InvalidInput(error_message=msg)
if 'device_owner' not in port_data:
return
new_dev_own = port_data['device_owner']
if new_dev_own == orig_dev_own:
return
err_msg = (_("Changing port device owner '%(orig)s' to '%(new)s' is "
"not allowed") % {'orig': orig_dev_own,
'new': new_dev_own})
# Do not allow changing nova <-> neutron device owners
if ((orig_dev_own.startswith(constants.DEVICE_OWNER_COMPUTE_PREFIX) and
new_dev_own.startswith(constants.DEVICE_OWNER_NETWORK_PREFIX)) or
(orig_dev_own.startswith(constants.DEVICE_OWNER_NETWORK_PREFIX) and
new_dev_own.startswith(constants.DEVICE_OWNER_COMPUTE_PREFIX))):
raise n_exc.InvalidInput(error_message=err_msg)
# Do not allow removing the device owner in some cases
if orig_dev_own == constants.DEVICE_OWNER_DHCP:
raise n_exc.InvalidInput(error_message=err_msg)
def _assert_on_port_sec_change(self, port_data, device_owner):
"""Do not allow enabling port security/mac learning of some ports
Trusted ports are created with port security and mac learning disabled
in neutron, and it should not change.
"""
if nl_net_utils.is_port_trusted({'device_owner': device_owner}):
if port_data.get(psec.PORTSECURITY) is True:
err_msg = _("port_security_enabled=True is not supported for "
"trusted ports")
LOG.warning(err_msg)
raise n_exc.InvalidInput(error_message=err_msg)
mac_learning = port_data.get(mac_ext.MAC_LEARNING)
if (validators.is_attr_set(mac_learning) and mac_learning is True):
err_msg = _("mac_learning_enabled=True is not supported for "
"trusted ports")
LOG.warning(err_msg)
raise n_exc.InvalidInput(error_message=err_msg)
def _validate_update_port(self, context, id, original_port, port_data):
qos_selected = validators.is_attr_set(port_data.get
(qos_consts.QOS_POLICY_ID))
is_external_net = self._network_is_external(
context, original_port['network_id'])
device_owner = (port_data['device_owner']
if 'device_owner' in port_data
else original_port.get('device_owner'))
# QoS validations
if qos_selected:
self._validate_qos_policy_id(
context, port_data.get(qos_consts.QOS_POLICY_ID))
if is_external_net:
raise nsx_exc.QoSOnExternalNet()
self._assert_on_illegal_port_with_qos(device_owner)
is_ens_tz_port = self._is_ens_tz_port(context, original_port)
if is_ens_tz_port:
err_msg = _("Cannot configure QOS on ENS networks")
raise n_exc.InvalidInput(error_message=err_msg)
# External networks validations:
if is_external_net:
self._assert_on_external_net_with_compute(port_data)
# Device owner validations:
orig_dev_owner = original_port.get('device_owner')
self._assert_on_device_owner_change(port_data, orig_dev_owner)
self._assert_on_port_admin_state(port_data, device_owner)
self._assert_on_port_sec_change(port_data, device_owner)
self._validate_max_ips_per_port(context,
port_data.get('fixed_ips', []),
device_owner)
self._validate_number_of_address_pairs(port_data)
self._assert_on_vpn_port_change(original_port)
self._assert_on_lb_port_fixed_ip_change(port_data, orig_dev_owner)
self._validate_extra_dhcp_options(port_data.get(ext_edo.EXTRADHCPOPTS))
def _get_dhcp_port_name(self, net_name, net_id):
return utils.get_name_and_uuid('%s-%s' % ('dhcp',
net_name or 'network'),
net_id)
def _build_port_name(self, context, port_data):
device_owner = port_data.get('device_owner')
device_id = port_data.get('device_id')
if device_owner == l3_db.DEVICE_OWNER_ROUTER_INTF and device_id:
router = self._get_router(context, device_id)
name = utils.get_name_and_uuid(
router['name'] or 'router', port_data['id'], tag='port')
elif device_owner == constants.DEVICE_OWNER_DHCP:
network = self.get_network(context, port_data['network_id'])
name = self._get_dhcp_port_name(network['name'],
network['id'])
elif device_owner.startswith(constants.DEVICE_OWNER_COMPUTE_PREFIX):
name = utils.get_name_and_uuid(
port_data['name'] or 'instance-port', port_data['id'])
else:
name = port_data['name']
return name
def _validate_external_net_create(self, net_data, default_tier0_router,
tier0_validator=None):
"""Validate external network configuration
Returns a tuple of:
- Boolean is provider network (always True)
- Network type (always L3_EXT)
- tier 0 router id
- vlan id
"""
if not validators.is_attr_set(net_data.get(pnet.PHYSICAL_NETWORK)):
tier0_uuid = default_tier0_router
else:
tier0_uuid = net_data[pnet.PHYSICAL_NETWORK]
if ((validators.is_attr_set(net_data.get(pnet.NETWORK_TYPE)) and
net_data.get(pnet.NETWORK_TYPE) != utils.NetworkTypes.L3_EXT and
net_data.get(pnet.NETWORK_TYPE) != utils.NetworkTypes.LOCAL) or
validators.is_attr_set(net_data.get(pnet.SEGMENTATION_ID))):
msg = (_("External network cannot be created with %s provider "
"network or segmentation id") %
net_data.get(pnet.NETWORK_TYPE))
raise n_exc.InvalidInput(error_message=msg)
if tier0_validator:
tier0_validator(tier0_uuid)
return (True, utils.NetworkTypes.L3_EXT, tier0_uuid, 0)
def _extend_network_dict_provider(self, context, network, bindings=None):
"""Add network provider fields to the network dict from the DB"""
if 'id' not in network:
return
if not bindings:
bindings = nsx_db.get_network_bindings(context.session,
network['id'])
# With NSX plugin, "normal" overlay networks will have no binding
if bindings:
# Network came in through provider networks API
network[pnet.NETWORK_TYPE] = bindings[0].binding_type
network[pnet.PHYSICAL_NETWORK] = bindings[0].phy_uuid
network[pnet.SEGMENTATION_ID] = bindings[0].vlan_id
def _extend_get_network_dict_provider(self, context, network):
self._extend_network_dict_provider(context, network)
network[qos_consts.QOS_POLICY_ID] = (qos_com_utils.
get_network_policy_id(context, network['id']))
def get_network(self, context, id, fields=None):
with db_api.CONTEXT_READER.using(context):
# Get network from Neutron database
network = self._get_network(context, id)
# Don't do field selection here otherwise we won't be able to add
# provider networks fields
net = self._make_network_dict(network, context=context)
self._extend_get_network_dict_provider(context, net)
return db_utils.resource_fields(net, fields)
def get_networks(self, context, filters=None, fields=None,
sorts=None, limit=None, marker=None,
page_reverse=False):
# Get networks from Neutron database
filters = filters or {}
with db_api.CONTEXT_READER.using(context):
networks = super(NsxPluginV3Base, self).get_networks(
context, filters, fields, sorts,
limit, marker, page_reverse)
# Add provider network fields
for net in networks:
self._extend_get_network_dict_provider(context, net)
return (networks if not fields else
[db_utils.resource_fields(network,
fields) for network in networks])
def _assert_on_ens_with_qos(self, net_data):
qos_id = net_data.get(qos_consts.QOS_POLICY_ID)
if validators.is_attr_set(qos_id):
err_msg = _("Cannot configure QOS on ENS networks")
raise n_exc.InvalidInput(error_message=err_msg)
def _get_port_qos_policy_id(self, context, original_port,
updated_port):
"""Return the QoS policy Id of a port that is being created/updated
Return the QoS policy assigned directly to the port (after update or
originally), or the policy of the network, if it is a compute port that
should inherit it.
original_port: the neutron port data before this update
(or None in a case of a new port creation)
updated_ports: the modified fields of this port
(or all th attributes of the new port)
"""
orig_compute = False
if original_port:
orig_compute = original_port.get('device_owner', '').startswith(
constants.DEVICE_OWNER_COMPUTE_PREFIX)
updated_compute = updated_port.get('device_owner', '').startswith(
constants.DEVICE_OWNER_COMPUTE_PREFIX)
is_new_compute = updated_compute and not orig_compute
qos_policy_id = None
if qos_consts.QOS_POLICY_ID in updated_port:
qos_policy_id = updated_port[qos_consts.QOS_POLICY_ID]
elif original_port:
# Look for the original QoS policy of this port
qos_policy_id = qos_com_utils.get_port_policy_id(
context, original_port['id'])
# If the port is now a 'compute' port (attached to a vm) and
# Qos policy was not configured on the port directly,
# try to take it from the ports network
if qos_policy_id is None and is_new_compute:
# check if the network of this port has a policy
net_id = (original_port.get('network_id') if original_port
else updated_port.get('network_id'))
qos_policy_id = qos_com_utils.get_network_policy_id(
context, net_id)
return qos_policy_id
def _ens_psec_supported(self):
"""Should be implemented by each plugin"""
pass
def _has_native_dhcp_metadata(self):
"""Should be implemented by each plugin"""
pass
def _get_nsx_net_tz_id(self, nsx_net):
"""Should be implemented by each plugin"""
pass
def _get_network_nsx_id(self, context, neutron_id):
"""Should be implemented by each plugin"""
pass
def _get_tier0_uplink_cidrs(self, tier0_id):
"""Should be implemented by each plugin"""
pass
def _validate_ens_net_portsecurity(self, net_data):
"""Validate/Update the port security of the new network for ENS TZ
Should be implemented by the plugin if necessary
"""
pass
def _is_ens_tz_net(self, context, net_id):
"""Return True if the network is based on an END transport zone"""
tz_id = self._get_net_tz(context, net_id)
if tz_id:
# Check the mode of this TZ
return self._is_ens_tz(tz_id)
return False
def _is_ens_tz_port(self, context, port_data):
# Check the host-switch-mode of the TZ connected to the ports network
return self._is_ens_tz_net(context, port_data['network_id'])
def _is_overlay_network(self, network_id):
"""Should be implemented by each plugin"""
pass
def _generate_segment_id(self, context, physical_network, net_data):
bindings = nsx_db.get_network_bindings_by_phy_uuid(
context.session, physical_network)
vlan_ranges = self._network_vlans.get(physical_network, [])
if vlan_ranges:
vlan_ids = set()
for vlan_min, vlan_max in vlan_ranges:
vlan_ids |= set(moves.range(vlan_min, vlan_max + 1))
else:
vlan_min = constants.MIN_VLAN_TAG
vlan_max = constants.MAX_VLAN_TAG
vlan_ids = set(moves.range(vlan_min, vlan_max + 1))
used_ids_in_range = set([binding.vlan_id for binding in bindings
if binding.vlan_id in vlan_ids])
free_ids = list(vlan_ids ^ used_ids_in_range)
if len(free_ids) == 0:
raise n_exc.NoNetworkAvailable()
net_data[pnet.SEGMENTATION_ID] = free_ids[0]
return net_data[pnet.SEGMENTATION_ID]
def _default_physical_net(self, physical_net):
return physical_net is None or physical_net == 'default'
def _validate_provider_create(self, context, network_data,
default_vlan_tz_uuid,
default_overlay_tz_uuid,
nsxlib_tz, nsxlib_network,
transparent_vlan=False):
"""Validate the parameters of a new provider network
raises an error if illegal
returns a dictionary with the relevant processed data:
- is_provider_net: boolean
- net_type: provider network type or None
- physical_net: the uuid of the relevant transport zone or None
- vlan_id: vlan tag, 0 or None
- switch_mode: standard or ENS
"""
is_provider_net = any(
validators.is_attr_set(network_data.get(f))
for f in (pnet.NETWORK_TYPE,
pnet.PHYSICAL_NETWORK,
pnet.SEGMENTATION_ID))
physical_net = network_data.get(pnet.PHYSICAL_NETWORK)
if not validators.is_attr_set(physical_net):
physical_net = None
vlan_id = network_data.get(pnet.SEGMENTATION_ID)
if not validators.is_attr_set(vlan_id):
vlan_id = None
if vlan_id and transparent_vlan:
err_msg = (_("Segmentation ID cannot be set with transparent "
"vlan!"))
raise n_exc.InvalidInput(error_message=err_msg)
err_msg = None
net_type = network_data.get(pnet.NETWORK_TYPE)
tz_type = nsxlib_consts.TRANSPORT_TYPE_VLAN
switch_mode = nsxlib_consts.HOST_SWITCH_MODE_STANDARD
if validators.is_attr_set(net_type):
if net_type == utils.NsxV3NetworkTypes.FLAT:
if vlan_id is not None:
err_msg = (_("Segmentation ID cannot be specified with "
"%s network type") %
utils.NsxV3NetworkTypes.FLAT)
else:
if not transparent_vlan:
# Set VLAN id to 0 for flat networks
vlan_id = '0'
if self._default_physical_net(physical_net):
physical_net = default_vlan_tz_uuid
elif net_type == utils.NsxV3NetworkTypes.VLAN:
# Use default VLAN transport zone if physical network not given
if self._default_physical_net(physical_net):
physical_net = default_vlan_tz_uuid
if not transparent_vlan:
# Validate VLAN id
if not vlan_id:
vlan_id = self._generate_segment_id(context,
physical_net,
network_data)
elif not plugin_utils.is_valid_vlan_tag(vlan_id):
err_msg = (_('Segmentation ID %(seg_id)s out of '
'range (%(min_id)s through %(max_id)s)') %
{'seg_id': vlan_id,
'min_id': constants.MIN_VLAN_TAG,
'max_id': constants.MAX_VLAN_TAG})
else:
# Verify VLAN id is not already allocated
bindings = nsx_db.\
get_network_bindings_by_vlanid_and_physical_net(
context.session, vlan_id, physical_net)
if bindings:
raise n_exc.VlanIdInUse(
vlan_id=vlan_id, physical_network=physical_net)
elif net_type == utils.NsxV3NetworkTypes.GENEVE:
if vlan_id:
err_msg = (_("Segmentation ID cannot be specified with "
"%s network type") %
utils.NsxV3NetworkTypes.GENEVE)
tz_type = nsxlib_consts.TRANSPORT_TYPE_OVERLAY
elif net_type == utils.NsxV3NetworkTypes.NSX_NETWORK:
# Linking neutron networks to an existing NSX logical switch
if not physical_net:
err_msg = (_("Physical network must be specified with "
"%s network type") % net_type)
# Validate the logical switch existence
else:
try:
nsx_net = nsxlib_network.get(physical_net)
tz_id = self._get_nsx_net_tz_id(nsx_net)
switch_mode = nsxlib_tz.get_host_switch_mode(tz_id)
except nsx_lib_exc.ResourceNotFound:
err_msg = (_('Logical switch %s does not exist') %
physical_net)
# make sure no other neutron network is using it
bindings = (
nsx_db.get_network_bindings_by_vlanid_and_physical_net(
context.elevated().session, 0, physical_net))
if bindings:
err_msg = (_('Logical switch %s is already used by '
'another network') % physical_net)
else:
err_msg = (_('%(net_type_param)s %(net_type_value)s not '
'supported') %
{'net_type_param': pnet.NETWORK_TYPE,
'net_type_value': net_type})
elif is_provider_net:
# FIXME: Ideally provider-network attributes should be checked
# at the NSX backend. For now, the network_type is required,
# so the plugin can do a quick check locally.
err_msg = (_('%s is required for creating a provider network') %
pnet.NETWORK_TYPE)
else:
net_type = None
if physical_net is None:
# Default to transport type overlay
physical_net = default_overlay_tz_uuid
# validate the transport zone existence and type
if (not err_msg and physical_net and
net_type != utils.NsxV3NetworkTypes.NSX_NETWORK):
if is_provider_net:
try:
backend_type = nsxlib_tz.get_transport_type(
physical_net)
except nsx_lib_exc.ResourceNotFound:
err_msg = (_('Transport zone %s does not exist') %
physical_net)
else:
if backend_type != tz_type:
err_msg = (_('%(tz)s transport zone is required for '
'creating a %(net)s provider network') %
{'tz': tz_type, 'net': net_type})
if not err_msg:
switch_mode = nsxlib_tz.get_host_switch_mode(physical_net)
if err_msg:
raise n_exc.InvalidInput(error_message=err_msg)
if (switch_mode == nsxlib_consts.HOST_SWITCH_MODE_ENS):
if not self._allow_ens_networks():
raise NotImplementedError(_("ENS support is disabled"))
self._assert_on_ens_with_qos(network_data)
self._validate_ens_net_portsecurity(network_data)
return {'is_provider_net': is_provider_net,
'net_type': net_type,
'physical_net': physical_net,
'vlan_id': vlan_id,
'switch_mode': switch_mode}
def _network_is_nsx_net(self, context, network_id):
bindings = nsx_db.get_network_bindings(context.session, network_id)
if not bindings:
return False
return (bindings[0].binding_type ==
utils.NsxV3NetworkTypes.NSX_NETWORK)
def _vif_type_by_vnic_type(self, direct_vnic_type):
return (nsx_constants.VIF_TYPE_DVS if direct_vnic_type
else pbin.VIF_TYPE_OVS)
def _get_network_segmentation_id(self, context, neutron_id):
bindings = nsx_db.get_network_bindings(context.session, neutron_id)
if bindings:
return bindings[0].vlan_id
def _extend_nsx_port_dict_binding(self, context, port_data):
# Not using the register api for this because we need the context
# Some attributes were already initialized by _extend_port_portbinding
if pbin.VIF_TYPE not in port_data:
port_data[pbin.VIF_TYPE] = pbin.VIF_TYPE_OVS
if pbin.VNIC_TYPE not in port_data:
port_data[pbin.VNIC_TYPE] = pbin.VNIC_NORMAL
if 'network_id' in port_data:
net_id = port_data['network_id']
if pbin.VIF_DETAILS not in port_data:
port_data[pbin.VIF_DETAILS] = {}
port_data[pbin.VIF_DETAILS][pbin.OVS_HYBRID_PLUG] = False
if (port_data.get('device_owner') ==
constants.DEVICE_OWNER_FLOATINGIP):
# floatingip belongs to an external net without nsx-id
port_data[pbin.VIF_DETAILS]['nsx-logical-switch-id'] = None
else:
port_data[pbin.VIF_DETAILS]['nsx-logical-switch-id'] = (
self._get_network_nsx_id(context, net_id))
if port_data[pbin.VNIC_TYPE] != pbin.VNIC_NORMAL:
port_data[pbin.VIF_DETAILS]['segmentation-id'] = (
self._get_network_segmentation_id(context, net_id))
def _extend_qos_port_dict_binding(self, context, port):
# add the qos policy id from the DB
if 'id' in port:
port[qos_consts.QOS_POLICY_ID] = qos_com_utils.get_port_policy_id(
context, port['id'])
def fix_direct_vnic_port_sec(self, direct_vnic_type, port_data):
if direct_vnic_type:
if validators.is_attr_set(port_data.get(psec.PORTSECURITY)):
# 'direct' and 'direct-physical' vnic types ports requires
# port-security to be disabled.
if port_data[psec.PORTSECURITY]:
err_msg = _("Security features are not supported for "
"ports with direct/direct-physical VNIC "
"type")
raise n_exc.InvalidInput(error_message=err_msg)
else:
# Implicitly disable port-security for direct vnic types.
port_data[psec.PORTSECURITY] = False
def _validate_network_type(self, context, network_id, net_types):
net = self.get_network(context, network_id)
if net.get(pnet.NETWORK_TYPE) in net_types:
return True
return False
def _revert_neutron_port_update(self, context, port_id,
original_port, updated_port,
port_security, sec_grp_updated):
# revert the neutron port update
super(NsxPluginV3Base, self).update_port(context, port_id,
{'port': original_port})
# revert allowed address pairs
if port_security:
orig_pair = original_port.get(addr_apidef.ADDRESS_PAIRS)
updated_pair = updated_port.get(addr_apidef.ADDRESS_PAIRS)
if orig_pair != updated_pair:
self._delete_allowed_address_pairs(context, port_id)
if orig_pair:
self._process_create_allowed_address_pairs(
context, original_port, orig_pair)
# revert the security groups modifications
if sec_grp_updated:
self.update_security_group_on_port(
context, port_id, {'port': original_port},
updated_port, original_port)
def _get_external_attachment_info(self, context, router):
gw_port = router.gw_port
ipaddress = None
netmask = None
nexthop = None
if gw_port:
# gw_port may have multiple IPs, only configure the first one
if gw_port.get('fixed_ips'):
ipaddress = gw_port['fixed_ips'][0]['ip_address']
network_id = gw_port.get('network_id')
if network_id:
ext_net = self._get_network(context, network_id)
if not ext_net.external:
msg = (_("Network '%s' is not a valid external "
"network") % network_id)
raise n_exc.BadRequest(resource='router', msg=msg)
if ext_net.subnets:
ext_subnet = ext_net.subnets[0]
netmask = str(netaddr.IPNetwork(ext_subnet.cidr).netmask)
nexthop = ext_subnet.gateway_ip
return (ipaddress, netmask, nexthop)
def _get_tier0_uuid_by_net_id(self, context, network_id):
if not network_id:
return
network = self.get_network(context, network_id)
if not network.get(pnet.PHYSICAL_NETWORK):
az = self.get_network_az(network)
return az._default_tier0_router
else:
return network.get(pnet.PHYSICAL_NETWORK)
def _validate_router_tz(self, context, tier0_uuid, subnets):
"""Ensure the related GW (Tier0 router) belongs to the same TZ
as the subnets attached to the Tier1 router
Should be implemented by each plugin.
"""
pass
def _validate_router_gw_and_tz(self, context, router_id, info,
org_enable_snat, router_subnets):
# Ensure that a router cannot have SNAT disabled if there are
# floating IP's assigned
if (info and 'enable_snat' in info and
org_enable_snat != info.get('enable_snat') and
info.get('enable_snat') is False and
self.router_gw_port_has_floating_ips(context, router_id)):
msg = _("Unable to set SNAT disabled. Floating IPs assigned")
raise n_exc.InvalidInput(error_message=msg)
# Ensure that the router GW tier0 belongs to the same TZ as the
# subnets of its interfaces
if info and info.get('network_id'):
new_tier0_uuid = self._get_tier0_uuid_by_net_id(context.elevated(),
info['network_id'])
if new_tier0_uuid:
self._validate_router_tz(context, new_tier0_uuid,
router_subnets)
def _validate_gw_overlap_interfaces(self, context, gateway_net,
interfaces_networks):
# Ensure that interface subnets cannot overlap with the GW subnet
gw_subnets = self._get_subnets_by_network(
context.elevated(), gateway_net)
gw_cidrs = [subnet['cidr'] for subnet in gw_subnets]
gw_ip_set = netaddr.IPSet(gw_cidrs)
if_subnets = []
for net in interfaces_networks:
if_subnets.extend(self._get_subnets_by_network(
context.elevated(), net))
if_cidrs = [subnet['cidr'] for subnet in if_subnets]
if_ip_set = netaddr.IPSet(if_cidrs)
if gw_ip_set & if_ip_set:
msg = _("Interface network cannot overlap with router GW network")
LOG.error(msg)
raise n_exc.InvalidInput(error_message=msg)
def _get_update_router_gw_actions(
self,
org_tier0_uuid, orgaddr, org_enable_snat,
new_tier0_uuid, newaddr, new_enable_snat,
lb_exist, fw_exist, sr_currently_exists):
"""Return a dictionary of flags indicating which actions should be
performed on this router GW update.
"""
actions = {}
# Remove router link port between tier1 and tier0 if tier0 router link
# is removed or changed
actions['remove_router_link_port'] = (
org_tier0_uuid and
(not new_tier0_uuid or org_tier0_uuid != new_tier0_uuid))
# Remove SNAT rules for gw ip if gw ip is deleted/changed or
# enable_snat is updated from True to False
actions['remove_snat_rules'] = (
org_enable_snat and orgaddr and
(newaddr != orgaddr or not new_enable_snat))
# Remove No-DNAT rules if GW was removed or snat was disabled
actions['remove_no_dnat_rules'] = (
orgaddr and org_enable_snat and
(not newaddr or not new_enable_snat))
# Revocate bgp announce for nonat subnets if tier0 router link is
# changed or enable_snat is updated from False to True
actions['revocate_bgp_announce'] = (
not org_enable_snat and org_tier0_uuid and
(new_tier0_uuid != org_tier0_uuid or new_enable_snat))
# Add router link port between tier1 and tier0 if tier0 router link is
# added or changed to a new one
actions['add_router_link_port'] = (
new_tier0_uuid and
(not org_tier0_uuid or org_tier0_uuid != new_tier0_uuid))
# Add SNAT rules for gw ip if gw ip is add/changed or
# enable_snat is updated from False to True
actions['add_snat_rules'] = (
new_enable_snat and newaddr and
(newaddr != orgaddr or not org_enable_snat))
# Add No-DNAT rules if GW was added, and the router has SNAT enabled,
# or if SNAT was enabled
actions['add_no_dnat_rules'] = (
new_enable_snat and newaddr and
(not orgaddr or not org_enable_snat))
# Bgp announce for nonat subnets if tier0 router link is changed or
# enable_snat is updated from True to False
actions['bgp_announce'] = (
not new_enable_snat and new_tier0_uuid and
(new_tier0_uuid != org_tier0_uuid or not org_enable_snat))
# Advertise NAT routes if enable SNAT to support FIP. In the NoNAT
# use case, only NSX connected routes need to be advertised.
actions['advertise_route_nat_flag'] = (
True if new_enable_snat else False)
actions['advertise_route_connected_flag'] = (
True if not new_enable_snat else False)
# the purpose of this var is to be able to differ between
# adding a gateway w/o snat and adding snat (when adding/removing gw
# the snat option is on by default).
new_with_snat = True if (new_enable_snat and newaddr) else False
has_gw = True if newaddr else False
if sr_currently_exists:
# currently there is a service router on the backend
actions['add_service_router'] = False
# Should remove the service router if the GW was removed,
# or no service needs it: SNAT, LBaaS or FWaaS
actions['remove_service_router'] = (
not has_gw or not (fw_exist or lb_exist or new_with_snat))
if actions['remove_service_router']:
LOG.info("Removing service router [has GW: %s, FW %s, LB %s, "
"SNAT %s]",
has_gw, fw_exist, lb_exist, new_with_snat)
else:
# currently there is no service router on the backend
actions['remove_service_router'] = False
# Should add service router if there is a GW
# and there is a service that needs it: SNAT, LB or FWaaS
actions['add_service_router'] = (
has_gw is not None and (new_with_snat or fw_exist or lb_exist))
if actions['add_service_router']:
LOG.info("Adding service router [has GW: %s, FW %s, LB %s, "
"SNAT %s]",
has_gw, fw_exist, lb_exist, new_with_snat)
return actions
def _validate_update_router_gw(self, context, router_id, gw_info):
router_ports = self._get_router_interfaces(context, router_id)
for port in router_ports:
# if setting this router as no-snat, make sure gw address scope
# match those of the subnets
if not gw_info.get('enable_snat',
cfg.CONF.enable_snat_by_default):
for fip in port['fixed_ips']:
self._validate_address_scope_for_router_interface(
context.elevated(), router_id,
gw_info['network_id'], fip['subnet_id'])
# If the network attached to a router is a VLAN backed network
# then it must be attached to an edge cluster
if (not gw_info and
not self._is_overlay_network(context, port['network_id'])):
msg = _("A router attached to a VLAN backed network "
"must have an external network assigned")
raise n_exc.InvalidInput(error_message=msg)
def _validate_ext_routes(self, context, router_id, gw_info, new_routes):
ext_net_id = (gw_info['network_id']
if validators.is_attr_set(gw_info) and gw_info else None)
if not ext_net_id:
port_filters = {'device_id': [router_id],
'device_owner': [l3_db.DEVICE_OWNER_ROUTER_GW]}
gw_ports = self.get_ports(context, filters=port_filters)
if gw_ports:
ext_net_id = gw_ports[0]['network_id']
if ext_net_id:
subnets = self._get_subnets_by_network(context, ext_net_id)
ext_cidrs = [subnet['cidr'] for subnet in subnets]
for route in new_routes:
if netaddr.all_matching_cidrs(
route['nexthop'], ext_cidrs):
error_message = (_("route with destination %(dest)s have "
"an external nexthop %(nexthop)s which "
"can't be supported") %
{'dest': route['destination'],
'nexthop': route['nexthop']})
LOG.error(error_message)
raise n_exc.InvalidInput(error_message=error_message)
def _get_static_routes_diff(self, context, router_id, gw_info,
router_data):
new_routes = router_data['routes']
self._validate_ext_routes(context, router_id, gw_info,
new_routes)
self._validate_routes(context, router_id, new_routes)
old_routes = self._get_extra_routes_by_router_id(
context, router_id)
routes_added, routes_removed = helpers.diff_list_of_dict(
old_routes, new_routes)
return routes_added, routes_removed
def _assert_on_router_admin_state(self, router_data):
if router_data.get("admin_state_up") is False:
err_msg = _("admin_state_up=False routers are not supported")
LOG.warning(err_msg)
raise n_exc.InvalidInput(error_message=err_msg)
def _build_dhcp_server_config(self, context, network, subnet, port, az):
name = self.nsxlib.native_dhcp.build_server_name(
network['name'], network['id'])
net_tags = self.nsxlib.build_v3_tags_payload(
network, resource_type='os-neutron-net-id',
project_name=context.tenant_name)
dns_domain = None
if network.get('dns_domain'):
net_dns = network['dns_domain']
if isinstance(net_dns, string_types):
dns_domain = net_dns
elif hasattr(net_dns, "dns_domain"):
dns_domain = net_dns.dns_domain
if not dns_domain or not validators.is_attr_set(dns_domain):
dns_domain = az.dns_domain
dns_nameservers = subnet['dns_nameservers']
if not dns_nameservers or not validators.is_attr_set(dns_nameservers):
dns_nameservers = az.nameservers
return self.nsxlib.native_dhcp.build_server(
name,
ip_address=port['fixed_ips'][0]['ip_address'],
cidr=subnet['cidr'],
gateway_ip=subnet['gateway_ip'],
host_routes=subnet['host_routes'],
dns_domain=dns_domain,
dns_nameservers=dns_nameservers,
dhcp_profile_id=az._native_dhcp_profile_uuid,
tags=net_tags)
def _enable_native_dhcp(self, context, network, subnet):
# Enable native DHCP service on the backend for this network.
# First create a Neutron DHCP port and use its assigned IP
# address as the DHCP server address in an API call to create a
# LogicalDhcpServer on the backend. Then create the corresponding
# logical port for the Neutron port with DHCP attachment as the
# LogicalDhcpServer UUID.
# TODO(annak):
# This function temporarily serves both nsx_v3 and nsx_p plugins.
# In future, when platform supports native dhcp in policy for infra
# segments, this function should move back to nsx_v3 plugin
# Delete obsolete settings if exist. This could happen when a
# previous failed transaction was rolled back. But the backend
# entries are still there.
self._disable_native_dhcp(context, network['id'])
# Get existing ports on subnet.
existing_ports = super(NsxPluginV3Base, self).get_ports(
context, filters={'network_id': [network['id']],
'fixed_ips': {'subnet_id': [subnet['id']]}})
nsx_net_id = self._get_network_nsx_id(context, network['id'])
if not nsx_net_id:
msg = ("Unable to obtain backend network id for logical DHCP "
"server for network %s" % network['id'])
LOG.error(msg)
raise nsx_exc.NsxPluginException(err_msg=msg)
az = self.get_network_az_by_net_id(context, network['id'])
port_data = {
"name": "",
"admin_state_up": True,
"device_id": az._native_dhcp_profile_uuid,
"device_owner": constants.DEVICE_OWNER_DHCP,
"network_id": network['id'],
"tenant_id": network["tenant_id"],
"mac_address": constants.ATTR_NOT_SPECIFIED,
"fixed_ips": [{"subnet_id": subnet['id']}],
psec.PORTSECURITY: False
}
# Create the DHCP port (on neutron only) and update its port security
port = {'port': port_data}
neutron_port = super(NsxPluginV3Base, self).create_port(context, port)
is_ens_tz_port = self._is_ens_tz_port(context, port_data)
self._create_port_preprocess_security(context, port, port_data,
neutron_port, is_ens_tz_port)
self._process_portbindings_create_and_update(
context, port_data, neutron_port)
server_data = self._build_dhcp_server_config(
context, network, subnet, neutron_port, az)
port_tags = self.nsxlib.build_v3_tags_payload(
neutron_port, resource_type='os-neutron-dport-id',
project_name=context.tenant_name)
dhcp_server = None
dhcp_port_profiles = []
if (not self._has_native_dhcp_metadata() and
not self._is_ens_tz_net(context, network['id'])):
dhcp_port_profiles.append(self._dhcp_profile)
try:
dhcp_server = self.nsxlib.dhcp_server.create(**server_data)
LOG.debug("Created logical DHCP server %(server)s for network "
"%(network)s",
{'server': dhcp_server['id'], 'network': network['id']})
name = self._build_port_name(context, port_data)
nsx_port = self.nsxlib.logical_port.create(
nsx_net_id, dhcp_server['id'], tags=port_tags, name=name,
attachment_type=nsxlib_consts.ATTACHMENT_DHCP,
switch_profile_ids=dhcp_port_profiles)
LOG.debug("Created DHCP logical port %(port)s for "
"network %(network)s",
{'port': nsx_port['id'], 'network': network['id']})
except nsx_lib_exc.ManagerError:
with excutils.save_and_reraise_exception():
LOG.error("Unable to create logical DHCP server for "
"network %s", network['id'])
if dhcp_server:
self.nsxlib.dhcp_server.delete(dhcp_server['id'])
super(NsxPluginV3Base, self).delete_port(
context, neutron_port['id'])
try:
# Add neutron_port_id -> nsx_port_id mapping to the DB.
nsx_db.add_neutron_nsx_port_mapping(
context.session, neutron_port['id'], nsx_net_id,
nsx_port['id'])
# Add neutron_net_id -> dhcp_service_id mapping to the DB.
nsx_db.add_neutron_nsx_service_binding(
context.session, network['id'], neutron_port['id'],
nsxlib_consts.SERVICE_DHCP, dhcp_server['id'])
except (db_exc.DBError, sql_exc.TimeoutError):
with excutils.save_and_reraise_exception():
LOG.error("Failed to create mapping for DHCP port %s,"
"deleting port and logical DHCP server",
neutron_port['id'])
self.nsxlib.dhcp_server.delete(dhcp_server['id'])
self._cleanup_port(context, neutron_port['id'], nsx_port['id'])
# Configure existing ports to work with the new DHCP server
try:
for port_data in existing_ports:
self._add_dhcp_binding(context, port_data)
except Exception:
LOG.error('Unable to create DHCP bindings for existing ports '
'on subnet %s', subnet['id'])
def _disable_native_dhcp(self, context, network_id):
# Disable native DHCP service on the backend for this network.
# First delete the DHCP port in this network. Then delete the
# corresponding LogicalDhcpServer for this network.
self._ensure_native_dhcp()
dhcp_service = nsx_db.get_nsx_service_binding(
context.session, network_id, nsxlib_consts.SERVICE_DHCP)
if not dhcp_service:
return
if dhcp_service['port_id']:
try:
_net_id, nsx_port_id = nsx_db.get_nsx_switch_and_port_id(
context.session, dhcp_service['port_id'])
self._cleanup_port(context, dhcp_service['port_id'],
nsx_port_id)
except nsx_lib_exc.ResourceNotFound:
# This could happen when the port has been manually deleted.
LOG.error("Failed to delete DHCP port %(port)s for "
"network %(network)s",
{'port': dhcp_service['port_id'],
'network': network_id})
else:
LOG.error("DHCP port is not configured for network %s",
network_id)
try:
self.nsxlib.dhcp_server.delete(dhcp_service['nsx_service_id'])
LOG.debug("Deleted logical DHCP server %(server)s for network "
"%(network)s",
{'server': dhcp_service['nsx_service_id'],
'network': network_id})
except nsx_lib_exc.ManagerError:
with excutils.save_and_reraise_exception():
LOG.error("Unable to delete logical DHCP server %(server)s "
"for network %(network)s",
{'server': dhcp_service['nsx_service_id'],
'network': network_id})
try:
# Delete neutron_id -> dhcp_service_id mapping from the DB.
nsx_db.delete_neutron_nsx_service_binding(
context.session, network_id, nsxlib_consts.SERVICE_DHCP)
# Delete all DHCP bindings under this DHCP server from the DB.
nsx_db.delete_neutron_nsx_dhcp_bindings_by_service_id(
context.session, dhcp_service['nsx_service_id'])
except db_exc.DBError:
with excutils.save_and_reraise_exception():
LOG.error("Unable to delete DHCP server mapping for "
"network %s", network_id)
def _filter_ipv4_dhcp_fixed_ips(self, context, fixed_ips):
ips = []
for fixed_ip in fixed_ips:
if netaddr.IPNetwork(fixed_ip['ip_address']).version != 4:
continue
with db_api.CONTEXT_READER.using(context):
subnet = self.get_subnet(context, fixed_ip['subnet_id'])
if subnet['enable_dhcp']:
ips.append(fixed_ip)
return ips
def _add_dhcp_binding(self, context, port):
if not utils.is_port_dhcp_configurable(port):
return
dhcp_service = nsx_db.get_nsx_service_binding(
context.session, port['network_id'], nsxlib_consts.SERVICE_DHCP)
if not dhcp_service:
return
for fixed_ip in self._filter_ipv4_dhcp_fixed_ips(
context, port['fixed_ips']):
binding = self._add_dhcp_binding_on_server(
context, dhcp_service['nsx_service_id'], fixed_ip['subnet_id'],
fixed_ip['ip_address'], port)
try:
nsx_db.add_neutron_nsx_dhcp_binding(
context.session, port['id'], fixed_ip['subnet_id'],
fixed_ip['ip_address'], dhcp_service['nsx_service_id'],
binding['id'])
except (db_exc.DBError, sql_exc.TimeoutError):
LOG.error("Failed to add mapping of DHCP binding "
"%(binding)s for port %(port)s, deleting "
"DHCP binding on server",
{'binding': binding['id'], 'port': port['id']})
fake_db_binding = {
'port_id': port['id'],
'nsx_service_id': dhcp_service['nsx_service_id'],
'nsx_binding_id': binding['id']}
self._delete_dhcp_binding_on_server(context, fake_db_binding)
def _add_dhcp_binding_on_server(self, context, dhcp_service_id, subnet_id,
ip, port):
try:
hostname = 'host-%s' % ip.replace('.', '-')
subnet = self.get_subnet(context, subnet_id)
gateway_ip = subnet.get('gateway_ip')
options = self._get_dhcp_options(
context, ip, port.get(ext_edo.EXTRADHCPOPTS),
port['network_id'], subnet)
binding = self.nsxlib.dhcp_server.create_binding(
dhcp_service_id, port['mac_address'], ip, hostname,
self._get_conf_attr('dhcp_lease_time'), options, gateway_ip)
LOG.debug("Created static binding (mac: %(mac)s, ip: %(ip)s, "
"gateway: %(gateway)s, options: %(options)s) for port "
"%(port)s on logical DHCP server %(server)s",
{'mac': port['mac_address'], 'ip': ip,
'gateway': gateway_ip, 'options': options,
'port': port['id'],
'server': dhcp_service_id})
return binding
except nsx_lib_exc.ManagerError:
with excutils.save_and_reraise_exception():
LOG.error("Unable to create static binding (mac: %(mac)s, "
"ip: %(ip)s, gateway: %(gateway)s, options: "
"%(options)s) for port %(port)s on logical DHCP "
"server %(server)s",
{'mac': port['mac_address'], 'ip': ip,
'gateway': gateway_ip, 'options': options,
'port': port['id'],
'server': dhcp_service_id})
def _delete_dhcp_binding(self, context, port):
# Do not check device_owner here because Nova may have already
# deleted that before Neutron's port deletion.
bindings = nsx_db.get_nsx_dhcp_bindings(context.session, port['id'])
for binding in bindings:
self._delete_dhcp_binding_on_server(context, binding)
try:
nsx_db.delete_neutron_nsx_dhcp_binding(
context.session, binding['port_id'],
binding['nsx_binding_id'])
except db_exc.DBError:
LOG.error("Unable to delete mapping of DHCP binding "
"%(binding)s for port %(port)s",
{'binding': binding['nsx_binding_id'],
'port': binding['port_id']})
def _delete_dhcp_binding_on_server(self, context, binding):
try:
self.nsxlib.dhcp_server.delete_binding(
binding['nsx_service_id'], binding['nsx_binding_id'])
LOG.debug("Deleted static binding for port %(port)s) on "
"logical DHCP server %(server)s",
{'port': binding['port_id'],
'server': binding['nsx_service_id']})
except nsx_lib_exc.ManagerError:
with excutils.save_and_reraise_exception():
LOG.error("Unable to delete static binding for port "
"%(port)s) on logical DHCP server %(server)s",
{'port': binding['port_id'],
'server': binding['nsx_service_id']})
def _find_dhcp_binding(self, subnet_id, ip_address, bindings):
for binding in bindings:
if (subnet_id == binding['subnet_id'] and
ip_address == binding['ip_address']):
return binding
def _update_dhcp_binding(self, context, old_port, new_port):
# First check if any IPv4 address in fixed_ips is changed.
# Then update DHCP server setting or DHCP static binding
# depending on the port type.
# Note that Neutron allows a port with multiple IPs in the
# same subnet. But backend DHCP server may not support that.
if (utils.is_port_dhcp_configurable(old_port) !=
utils.is_port_dhcp_configurable(new_port)):
# Note that the device_owner could be changed,
# but still needs DHCP binding.
if utils.is_port_dhcp_configurable(old_port):
self._delete_dhcp_binding(context, old_port)
else:
self._add_dhcp_binding(context, new_port)
return
# Collect IPv4 DHCP addresses from original and updated fixed_ips
# in the form of [(subnet_id, ip_address)].
old_fixed_ips = set([(fixed_ip['subnet_id'], fixed_ip['ip_address'])
for fixed_ip in self._filter_ipv4_dhcp_fixed_ips(
context, old_port['fixed_ips'])])
new_fixed_ips = set([(fixed_ip['subnet_id'], fixed_ip['ip_address'])
for fixed_ip in self._filter_ipv4_dhcp_fixed_ips(
context, new_port['fixed_ips'])])
# Find out the subnet/IP differences before and after the update.
ips_to_add = list(new_fixed_ips - old_fixed_ips)
ips_to_delete = list(old_fixed_ips - new_fixed_ips)
ip_change = (ips_to_add or ips_to_delete)
if (old_port["device_owner"] == constants.DEVICE_OWNER_DHCP and
ip_change):
# Update backend DHCP server address if the IP address of a DHCP
# port is changed.
if len(new_fixed_ips) != 1:
msg = _("Can only configure one IP address on a DHCP server")
LOG.error(msg)
raise n_exc.InvalidInput(error_message=msg)
# Locate the backend DHCP server for this DHCP port.
dhcp_service = nsx_db.get_nsx_service_binding(
context.session, old_port['network_id'],
nsxlib_consts.SERVICE_DHCP)
if dhcp_service:
new_ip = ips_to_add[0][1]
try:
self.nsxlib.dhcp_server.update(
dhcp_service['nsx_service_id'],
server_ip=new_ip)
LOG.debug("Updated IP %(ip)s for logical DHCP server "
"%(server)s",
{'ip': new_ip,
'server': dhcp_service['nsx_service_id']})
except nsx_lib_exc.ManagerError:
with excutils.save_and_reraise_exception():
LOG.error("Unable to update IP %(ip)s for logical "
"DHCP server %(server)s",
{'ip': new_ip,
'server': dhcp_service['nsx_service_id']})
elif utils.is_port_dhcp_configurable(old_port):
# Update static DHCP bindings for a compute port.
bindings = nsx_db.get_nsx_dhcp_bindings(context.session,
old_port['id'])
dhcp_opts = new_port.get(ext_edo.EXTRADHCPOPTS)
dhcp_opts_changed = (old_port[ext_edo.EXTRADHCPOPTS] !=
new_port[ext_edo.EXTRADHCPOPTS])
if ip_change:
# If IP address is changed, update associated DHCP bindings,
# metadata route, and default hostname.
# Mac address (if changed) will be updated at the same time.
if ([subnet_id for (subnet_id, ip) in ips_to_add] ==
[subnet_id for (subnet_id, ip) in ips_to_delete]):
# No change on subnet_id, just update corresponding IPs.
for i, (subnet_id, ip) in enumerate(ips_to_delete):
binding = self._find_dhcp_binding(subnet_id, ip,
bindings)
if binding:
subnet = self.get_subnet(context,
binding['subnet_id'])
self._update_dhcp_binding_on_server(
context, binding, new_port['mac_address'],
ips_to_add[i][1], old_port['network_id'],
dhcp_opts=dhcp_opts, subnet=subnet)
# Update DB IP
nsx_db.update_nsx_dhcp_bindings(context.session,
old_port['id'],
ip,
ips_to_add[i][1])
else:
for (subnet_id, ip) in ips_to_delete:
binding = self._find_dhcp_binding(subnet_id, ip,
bindings)
if binding:
self._delete_dhcp_binding_on_server(context,
binding)
if ips_to_add:
dhcp_service = nsx_db.get_nsx_service_binding(
context.session, new_port['network_id'],
nsxlib_consts.SERVICE_DHCP)
if dhcp_service:
for (subnet_id, ip) in ips_to_add:
self._add_dhcp_binding_on_server(
context, dhcp_service['nsx_service_id'],
subnet_id, ip, new_port)
elif (old_port['mac_address'] != new_port['mac_address'] or
dhcp_opts_changed):
# If only Mac address/dhcp opts is changed,
# update it in all associated DHCP bindings.
for binding in bindings:
subnet = self.get_subnet(context, binding['subnet_id'])
self._update_dhcp_binding_on_server(
context, binding, new_port['mac_address'],
binding['ip_address'], old_port['network_id'],
dhcp_opts=dhcp_opts, subnet=subnet)
def _cleanup_port(self, context, port_id, nsx_port_id=None):
# Clean up neutron port and nsx manager port if provided
# Does not handle cleanup of policy port
super(NsxPluginV3Base, self).delete_port(context, port_id)
if nsx_port_id and self.nsxlib:
self.nsxlib.logical_port.delete(nsx_port_id)
def _is_excluded_port(self, device_owner, port_security):
if device_owner == l3_db.DEVICE_OWNER_ROUTER_INTF:
return False
if device_owner == constants.DEVICE_OWNER_DHCP:
if not self._has_native_dhcp_metadata():
return True
elif not port_security:
return True
return False
def _validate_obj_az_on_creation(self, context, obj_data, obj_type):
# validate the availability zone, and get the AZ object
if az_def.AZ_HINTS in obj_data:
self._validate_availability_zones_forced(
context, obj_type, obj_data[az_def.AZ_HINTS])
return self.get_obj_az_by_hints(obj_data)
def _add_az_to_net(self, context, net_id, net_data):
if az_def.AZ_HINTS in net_data:
# Update the AZ hints in the neutron object
az_hints = az_validator.convert_az_list_to_string(
net_data[az_def.AZ_HINTS])
super(NsxPluginV3Base, self).update_network(
context, net_id,
{'network': {az_def.AZ_HINTS: az_hints}})
def _add_az_to_router(self, context, router_id, router_data):
if az_def.AZ_HINTS in router_data:
# Update the AZ hints in the neutron object
az_hints = az_validator.convert_az_list_to_string(
router_data[az_def.AZ_HINTS])
super(NsxPluginV3Base, self).update_router(
context, router_id,
{'router': {az_def.AZ_HINTS: az_hints}})
def get_network_availability_zones(self, net_db):
if self._has_native_dhcp_metadata():
hints = az_validator.convert_az_string_to_list(
net_db[az_def.AZ_HINTS])
# When using the configured AZs, the az will always be the same
# as the hint (or default if none)
if hints:
az_name = hints[0]
else:
az_name = self.get_default_az().name
return [az_name]
else:
return []
def _get_router_az_obj(self, router):
l3_attrs_db.ExtraAttributesMixin._extend_extra_router_dict(
router, router)
return self.get_router_az(router)
def get_router_availability_zones(self, router):
"""Return availability zones which a router belongs to."""
return [self._get_router_az_obj(router).name]
def _validate_availability_zones_forced(self, context, resource_type,
availability_zones):
return self.validate_availability_zones(context, resource_type,
availability_zones,
force=True)
def _list_availability_zones(self, context, filters=None):
# If no native_dhcp_metadata - use neutron AZs
if not self._has_native_dhcp_metadata():
return super(NsxPluginV3Base, self)._list_availability_zones(
context, filters=filters)
result = {}
for az in self._availability_zones_data.list_availability_zones():
# Add this availability zone as a network & router resource
if filters:
if 'name' in filters and az not in filters['name']:
continue
for res in ['network', 'router']:
if 'resource' not in filters or res in filters['resource']:
result[(az, res)] = True
return result
def validate_availability_zones(self, context, resource_type,
availability_zones, force=False):
# This method is called directly from this plugin but also from
# registered callbacks
if self._is_sub_plugin and not force:
# validation should be done together for both plugins
return
# If no native_dhcp_metadata - use neutron AZs
if not self._has_native_dhcp_metadata():
return super(NsxPluginV3Base, self).validate_availability_zones(
context, resource_type, availability_zones)
# Validate against the configured AZs
return self.validate_obj_azs(availability_zones)
def _ensure_nsxlib(self, feature):
if not self.nsxlib:
msg = (_("%s is not supported since passthough API is disabled") %
feature)
LOG.error(msg)
raise n_exc.InvalidInput(error_message=msg)
def _ensure_native_dhcp(self):
self._ensure_nsxlib("Native DHCP")
if not self._native_dhcp_enabled:
msg = (_("Native DHCP is not supported since dhcp_profile is not"
" provided in plugin configuration"))
LOG.error(msg)
raise n_exc.InvalidInput(error_message=msg)
def _get_net_dhcp_relay(self, context, net_id):
"""Should be implemented by each plugin"""
pass
def _get_ipv6_subnet(self, context, network):
for subnet in network.subnets:
if subnet.ip_version == 6:
return subnet
def _validate_single_ipv6_subnet(self, context, network, subnet):
if subnet.get('ip_version') == 6:
if self._get_ipv6_subnet(context, network):
msg = (_("Only one ipv6 subnet per network is supported"))
LOG.error(msg)
raise n_exc.InvalidInput(error_message=msg)
def _subnet_with_native_dhcp(self, subnet):
native_metadata = self._has_native_dhcp_metadata()
# DHCPv6 is not yet supported, but slaac is
# When configuring slaac, neutron requires the user
# to enable dhcp, however plugin code does not consider
# slaac as dhcp.
return (native_metadata and
subnet.get('enable_dhcp', False) and
subnet.get('ipv6_address_mode') != 'slaac')
def _validate_subnet_ip_version(self, subnet):
# This validation only needs to be called at create,
# since ip version and ipv6 mode attributes are read only
if subnet.get('ip_version') == 4:
# No dhcp restrictions for V4
return
enable_dhcp = subnet.get('enable_dhcp', False)
is_slaac = (subnet.get('ipv6_address_mode') == 'slaac')
if enable_dhcp and not is_slaac:
# No DHCPv6 support yet
msg = _("DHCPv6 is not supported")
LOG.error(msg)
raise n_exc.InvalidInput(error_message=msg)
def _create_subnet(self, context, subnet):
self._validate_number_of_subnet_static_routes(subnet)
self._validate_host_routes_input(subnet)
self._validate_subnet_ip_version(subnet['subnet'])
network = self._get_network(
context, subnet['subnet']['network_id'])
self._validate_single_ipv6_subnet(context, network, subnet['subnet'])
# TODO(berlin): public external subnet announcement
if self._subnet_with_native_dhcp(subnet['subnet']):
self._validate_external_subnet(context,
subnet['subnet']['network_id'])
self._ensure_native_dhcp()
lock = 'nsxv3_network_' + subnet['subnet']['network_id']
ddi_support, ddi_type = self._is_ddi_supported_on_net_with_type(
context, subnet['subnet']['network_id'])
with locking.LockManager.get_lock(lock):
# Check if it is on an overlay network and is the first
# DHCP-enabled subnet to create.
if ddi_support:
if self._has_no_dhcp_enabled_subnet(context, network):
created_subnet = super(
NsxPluginV3Base, self).create_subnet(context,
subnet)
try:
# This can be called only after the super create
# since we need the subnet pool to be translated
# to allocation pools
self._validate_address_space(
context, created_subnet)
except n_exc.InvalidInput:
# revert the subnet creation
with excutils.save_and_reraise_exception():
super(NsxPluginV3Base, self).delete_subnet(
context, created_subnet['id'])
self._extension_manager.process_create_subnet(context,
subnet['subnet'], created_subnet)
dhcp_relay = self._get_net_dhcp_relay(
context, subnet['subnet']['network_id'])
if not dhcp_relay:
if self.nsxlib:
try:
self._enable_native_dhcp(context, network,
created_subnet)
except nsx_lib_exc.ManagerError:
with excutils.save_and_reraise_exception():
super(NsxPluginV3Base,
self).delete_subnet(
context, created_subnet['id'])
else:
msg = (_("Native DHCP is not supported since "
"passthough API is disabled"))
self._enable_native_dhcp(context, network,
created_subnet)
msg = None
else:
msg = (_("Can not create more than one DHCP-enabled "
"subnet in network %s") %
subnet['subnet']['network_id'])
else:
msg = _("Native DHCP is not supported for %(type)s "
"network %(id)s") % {
'id': subnet['subnet']['network_id'],
'type': ddi_type}
if msg:
LOG.error(msg)
raise n_exc.InvalidInput(error_message=msg)
else:
created_subnet = super(NsxPluginV3Base, self).create_subnet(
context, subnet)
try:
# This can be called only after the super create
# since we need the subnet pool to be translated
# to allocation pools
self._validate_address_space(context, created_subnet)
except n_exc.InvalidInput:
# revert the subnet creation
with excutils.save_and_reraise_exception():
super(NsxPluginV3Base, self).delete_subnet(
context, created_subnet['id'])
return created_subnet
def _create_bulk_with_callback(self, resource, context, request_items,
post_create_func=None, rollback_func=None):
# This is a copy of the _create_bulk() in db_base_plugin_v2.py,
# but extended with user-provided callback functions.
objects = []
collection = "%ss" % resource
items = request_items[collection]
try:
with db_api.CONTEXT_WRITER.using(context):
for item in items:
obj_creator = getattr(self, 'create_%s' % resource)
obj = obj_creator(context, item)
objects.append(obj)
if post_create_func:
# The user-provided post_create function is called
# after a new object is created.
post_create_func(obj)
except Exception:
if rollback_func:
# The user-provided rollback function is called when an
# exception occurred.
for obj in objects:
rollback_func(obj)
# Note that the session.rollback() function is called here.
# session.rollback() will invoke transaction.rollback() on
# the transaction this session maintains. The latter will
# deactive the transaction and clear the session's cache.
#
# But depending on where the exception occurred,
# transaction.rollback() may have already been called
# internally before reaching here.
#
# For example, if the exception happened under a
# "with session.begin(subtransactions=True):" statement
# anywhere in the middle of processing obj_creator(),
# transaction.__exit__() will invoke transaction.rollback().
# Thus when the exception reaches here, the session's cache
# is already empty.
context.session.rollback()
with excutils.save_and_reraise_exception():
LOG.error("An exception occurred while creating "
"the %(resource)s:%(item)s",
{'resource': resource, 'item': item})
return objects
def _post_create_subnet(self, context, subnet):
LOG.debug("Collect native DHCP entries for network %s",
subnet['network_id'])
dhcp_service = nsx_db.get_nsx_service_binding(
context.session, subnet['network_id'], nsxlib_consts.SERVICE_DHCP)
if dhcp_service:
_net_id, nsx_port_id = nsx_db.get_nsx_switch_and_port_id(
context.session, dhcp_service['port_id'])
return {'nsx_port_id': nsx_port_id,
'nsx_service_id': dhcp_service['nsx_service_id']}
def _rollback_subnet(self, subnet, dhcp_info):
LOG.debug("Rollback native DHCP entries for network %s",
subnet['network_id'])
if dhcp_info and self.nsxlib:
try:
self.nsxlib.logical_port.delete(dhcp_info['nsx_port_id'])
except Exception as e:
LOG.error("Failed to delete logical port %(id)s "
"during rollback. Exception: %(e)s",
{'id': dhcp_info['nsx_port_id'], 'e': e})
try:
self.nsxlib.dhcp_server.delete(dhcp_info['nsx_service_id'])
except Exception as e:
LOG.error("Failed to delete logical DHCP server %(id)s "
"during rollback. Exception: %(e)s",
{'id': dhcp_info['nsx_service_id'], 'e': e})
def create_subnet_bulk(self, context, subnets):
# Maintain a local cache here because when the rollback function
# is called, the cache in the session may have already been cleared.
_subnet_dhcp_info = {}
def _post_create(subnet):
if subnet['enable_dhcp']:
_subnet_dhcp_info[subnet['id']] = self._post_create_subnet(
context, subnet)
def _rollback(subnet):
if subnet['enable_dhcp'] and subnet['id'] in _subnet_dhcp_info:
self._rollback_subnet(subnet, _subnet_dhcp_info[subnet['id']])
del _subnet_dhcp_info[subnet['id']]
if self._has_native_dhcp_metadata():
return self._create_bulk_with_callback('subnet', context, subnets,
_post_create, _rollback)
else:
return self._create_bulk('subnet', context, subnets)
def _get_neutron_net_ids_by_nsx_id(self, context, nsx_id):
"""Should be implemented by each plugin"""
pass
def _validate_number_of_subnet_static_routes(self, subnet_input):
s = subnet_input['subnet']
request_host_routes = (validators.is_attr_set(s.get('host_routes')) and
s['host_routes'])
num_allowed_on_backend = nsxlib_consts.MAX_STATIC_ROUTES
if request_host_routes:
if len(request_host_routes) > num_allowed_on_backend:
err_msg = (_(
"Number of static routes is limited at the backend to %("
"backend)s. Requested %(requested)s") %
{'backend': nsxlib_consts.MAX_STATIC_ROUTES,
'requested': len(request_host_routes)})
raise n_exc.InvalidInput(error_message=err_msg)
def get_subnets(self, context, filters=None, fields=None, sorts=None,
limit=None, marker=None, page_reverse=False):
filters = filters or {}
lswitch_ids = filters.pop(as_providers.ADV_SERVICE_PROVIDERS, [])
if lswitch_ids:
# This is a request from Nova for metadata processing.
# Find the corresponding neutron network for each logical switch.
network_ids = filters.pop('network_id', [])
context = context.elevated()
for lswitch_id in lswitch_ids:
network_ids += self._get_neutron_net_ids_by_nsx_id(
context, lswitch_id)
filters['network_id'] = network_ids
return super(NsxPluginV3Base, self).get_subnets(
context, filters, fields, sorts, limit, marker, page_reverse)
def delete_subnet(self, context, subnet_id):
# TODO(berlin): cancel public external subnet announcement
if self._has_native_dhcp_metadata():
# Ensure that subnet is not deleted if attached to router.
self._subnet_check_ip_allocations_internal_router_ports(
context, subnet_id)
subnet = self.get_subnet(context, subnet_id)
if self._subnet_with_native_dhcp(subnet):
lock = 'nsxv3_network_' + subnet['network_id']
with locking.LockManager.get_lock(lock):
# Check if it is the last DHCP-enabled subnet to delete.
network = self._get_network(context, subnet['network_id'])
if self._has_single_dhcp_enabled_subnet(context, network):
try:
self._disable_native_dhcp(context, network['id'])
except Exception as e:
LOG.error("Failed to disable native DHCP for "
"network %(id)s. Exception: %(e)s",
{'id': network['id'], 'e': e})
super(NsxPluginV3Base, self).delete_subnet(
context, subnet_id)
return
super(NsxPluginV3Base, self).delete_subnet(context, subnet_id)
def _update_subnet(self, context, subnet_id, subnet):
updated_subnet = None
orig_subnet = self.get_subnet(context, subnet_id)
self._validate_number_of_subnet_static_routes(subnet)
self._validate_host_routes_input(
subnet,
orig_enable_dhcp=orig_subnet['enable_dhcp'],
orig_host_routes=orig_subnet['host_routes'])
network = self._get_network(context, orig_subnet['network_id'])
if (subnet['subnet'].get('ip_version') !=
orig_subnet.get('ip_version')):
self._validate_single_ipv6_subnet(
context, network, subnet['subnet'])
if self._has_native_dhcp_metadata():
enable_dhcp = self._subnet_with_native_dhcp(subnet['subnet'])
orig_enable_dhcp = self._subnet_with_native_dhcp(orig_subnet)
if (enable_dhcp is not None and
enable_dhcp != orig_enable_dhcp):
self._ensure_native_dhcp()
lock = 'nsxv3_network_' + orig_subnet['network_id']
with locking.LockManager.get_lock(lock):
if enable_dhcp:
(ddi_support,
ddi_type) = self._is_ddi_supported_on_net_with_type(
context, orig_subnet['network_id'])
if ddi_support:
if self._has_no_dhcp_enabled_subnet(
context, network):
updated_subnet = super(
NsxPluginV3Base, self).update_subnet(
context, subnet_id, subnet)
self._extension_manager.process_update_subnet(
context, subnet['subnet'], updated_subnet)
self._enable_native_dhcp(context, network,
updated_subnet)
msg = None
else:
msg = (_("Multiple DHCP-enabled subnets is "
"not allowed in network %s") %
orig_subnet['network_id'])
else:
msg = (_("Native DHCP is not supported for "
"%(type)s network %(id)s") %
{'id': orig_subnet['network_id'],
'type': ddi_type})
if msg:
LOG.error(msg)
raise n_exc.InvalidInput(error_message=msg)
elif self._has_single_dhcp_enabled_subnet(context,
network):
self._disable_native_dhcp(context, network['id'])
updated_subnet = super(
NsxPluginV3Base, self).update_subnet(
context, subnet_id, subnet)
self._extension_manager.process_update_subnet(
context, subnet['subnet'], updated_subnet)
if not updated_subnet:
updated_subnet = super(NsxPluginV3Base, self).update_subnet(
context, subnet_id, subnet)
self._extension_manager.process_update_subnet(
context, subnet['subnet'], updated_subnet)
# Check if needs to update logical DHCP server for native DHCP.
if self._subnet_with_native_dhcp(updated_subnet):
self._ensure_native_dhcp()
kwargs = {}
for key in ('dns_nameservers', 'gateway_ip', 'host_routes'):
if key in subnet['subnet']:
value = subnet['subnet'][key]
if value != orig_subnet[key]:
kwargs[key] = value
if key != 'dns_nameservers':
kwargs['options'] = None
if 'options' in kwargs:
sr, gw_ip = self.nsxlib.native_dhcp.build_static_routes(
updated_subnet.get('gateway_ip'),
updated_subnet.get('cidr'),
updated_subnet.get('host_routes', []))
kwargs['options'] = {'option121': {'static_routes': sr}}
kwargs.pop('host_routes', None)
if (gw_ip is not None and 'gateway_ip' not in kwargs and
gw_ip != updated_subnet['gateway_ip']):
kwargs['gateway_ip'] = gw_ip
if kwargs:
dhcp_service = nsx_db.get_nsx_service_binding(
context.session, orig_subnet['network_id'],
nsxlib_consts.SERVICE_DHCP)
if dhcp_service:
try:
self.nsxlib.dhcp_server.update(
dhcp_service['nsx_service_id'], **kwargs)
except nsx_lib_exc.ManagerError:
with excutils.save_and_reraise_exception():
LOG.error(
"Unable to update logical DHCP server "
"%(server)s for network %(network)s",
{'server': dhcp_service['nsx_service_id'],
'network': orig_subnet['network_id']})
if 'options' in kwargs:
# Need to update the static binding of every VM in
# this logical DHCP server.
bindings = nsx_db.get_nsx_dhcp_bindings_by_service(
context.session, dhcp_service['nsx_service_id'])
for binding in bindings:
port = self._get_port(context, binding['port_id'])
dhcp_opts = port.get(ext_edo.EXTRADHCPOPTS)
self._update_dhcp_binding_on_server(
context, binding, port['mac_address'],
binding['ip_address'],
port['network_id'],
gateway_ip=kwargs.get('gateway_ip', False),
dhcp_opts=dhcp_opts,
options=kwargs.get('options'),
subnet=updated_subnet)
return updated_subnet
def _has_active_port(self, context, network_id):
ports_in_use = context.session.query(models_v2.Port).filter_by(
network_id=network_id).all()
return not all([p.device_owner in
db_base_plugin_v2.AUTO_DELETE_PORT_OWNERS
for p in ports_in_use]) if ports_in_use else False
def _delete_network_disable_dhcp(self, context, network_id):
# Disable native DHCP and delete DHCP ports before network deletion
lock = 'nsxv3_network_' + network_id
with locking.LockManager.get_lock(lock):
# Disable native DHCP if there is no other existing port
# besides DHCP port.
if not self._has_active_port(context, network_id):
self._disable_native_dhcp(context, network_id)
def _retry_delete_network(self, context, network_id):
"""This method attempts to retry the delete on a network if there are
AUTO_DELETE_PORT_OWNERS left. This is to avoid a race condition
between delete_network and the dhcp creating a port on the network.
"""
first_try = True
while True:
try:
with db_api.CONTEXT_WRITER.using(context):
self._process_l3_delete(context, network_id)
return super(NsxPluginV3Base, self).delete_network(
context, network_id)
except n_exc.NetworkInUse:
# There is a race condition in delete_network() that we need
# to work around here. delete_network() issues a query to
# automatically delete DHCP ports and then checks to see if any
# ports exist on the network. If a network is created and
# deleted quickly, such as when running tempest, the DHCP agent
# may be creating its port for the network around the same time
# that the network is deleted. This can result in the DHCP
# port getting created in between these two queries in
# delete_network(). To work around that, we'll call
# delete_network() a second time if we get a NetworkInUse
# exception but the only port(s) that exist are ones that
# delete_network() is supposed to automatically delete.
if not first_try:
# We tried once to work around the known race condition,
# but we still got the exception, so something else is
# wrong that we can't recover from.
raise
first_try = False
if self._has_active_port(context, network_id):
# There is a port on the network that is not going to be
# automatically deleted (such as a tenant created port), so
# we have nothing else to do but raise the exception.
raise
def _get_dhcp_options(self, context, ip, extra_dhcp_opts, net_id,
subnet):
# Always add option121.
net_az = self.get_network_az_by_net_id(context, net_id)
options = {'option121': {'static_routes': [
{'network': '%s' % net_az.native_metadata_route,
'next_hop': '0.0.0.0'},
{'network': '%s' % net_az.native_metadata_route,
'next_hop': ip}]}}
if subnet:
sr, gateway_ip = self.nsxlib.native_dhcp.build_static_routes(
subnet.get('gateway_ip'), subnet.get('cidr'),
subnet.get('host_routes', []))
options['option121']['static_routes'].extend(sr)
# Adding extra options only if configured on port
if extra_dhcp_opts:
other_opts = []
for opt in extra_dhcp_opts:
opt_name = opt['opt_name']
if opt['opt_value'] is not None:
# None value means - delete this option. Since we rebuild
# the options from scratch, it can be ignored.
opt_val = opt['opt_value']
if opt_name == 'classless-static-route':
# Add to the option121 static routes
net, ip = opt_val.split(',')
options['option121']['static_routes'].append({
'network': net, 'next_hop': ip})
else:
other_opts.append({
'code': nsxlib_utils.get_dhcp_opt_code(opt_name),
'values': [opt_val]})
if other_opts:
options['others'] = other_opts
return options
def _update_dhcp_binding_on_server(self, context, binding, mac, ip,
net_id, gateway_ip=False,
dhcp_opts=None, options=None,
subnet=None):
try:
data = {'mac_address': mac, 'ip_address': ip}
if ip != binding['ip_address']:
data['host_name'] = 'host-%s' % ip.replace('.', '-')
data['options'] = self._get_dhcp_options(
context, ip, dhcp_opts, net_id,
subnet)
elif (dhcp_opts is not None or
options is not None):
data['options'] = self._get_dhcp_options(
context, ip, dhcp_opts, net_id,
subnet)
if gateway_ip is not False:
# Note that None is valid for gateway_ip, means deleting it.
data['gateway_ip'] = gateway_ip
self.nsxlib.dhcp_server.update_binding(
binding['nsx_service_id'], binding['nsx_binding_id'], **data)
LOG.debug("Updated static binding (mac: %(mac)s, ip: %(ip)s, "
"gateway: %(gateway)s) for port %(port)s on "
"logical DHCP server %(server)s",
{'mac': mac, 'ip': ip, 'gateway': gateway_ip,
'port': binding['port_id'],
'server': binding['nsx_service_id']})
except nsx_lib_exc.ManagerError:
with excutils.save_and_reraise_exception():
LOG.error("Unable to update static binding (mac: %(mac)s, "
"ip: %(ip)s, gateway: %(gateway)s) for port "
"%(port)s on logical DHCP server %(server)s",
{'mac': mac, 'ip': ip, 'gateway': gateway_ip,
'port': binding['port_id'],
'server': binding['nsx_service_id']})
def _validate_extra_dhcp_options(self, opts):
if not opts or not self._has_native_dhcp_metadata():
return
for opt in opts:
opt_name = opt['opt_name']
opt_val = opt['opt_value']
if opt_name == 'classless-static-route':
# separate validation for option121
if opt_val is not None:
try:
net, ip = opt_val.split(',')
except Exception:
msg = (_("Bad value %(val)s for DHCP option "
"%(name)s") % {'name': opt_name,
'val': opt_val})
raise n_exc.InvalidInput(error_message=msg)
elif not nsxlib_utils.get_dhcp_opt_code(opt_name):
msg = (_("DHCP option %s is not supported") % opt_name)
raise n_exc.InvalidInput(error_message=msg)
def _is_vlan_router_interface_supported(self):
"""Should be implemented by each plugin"""
def _is_ddi_supported_on_network(self, context, network_id):
result, _ = self._is_ddi_supported_on_net_with_type(
context, network_id)
return result
def _is_ddi_supported_on_net_with_type(self, context, network_id):
net = self.get_network(context, network_id)
# NSX current does not support transparent VLAN ports for
# DHCP and metadata
if cfg.CONF.vlan_transparent:
if net.get('vlan_transparent') is True:
return False, "VLAN transparent"
# NSX current does not support flat network ports for
# DHCP and metadata
if net.get(pnet.NETWORK_TYPE) == utils.NsxV3NetworkTypes.FLAT:
return False, "flat"
# supported for overlay networks, and for vlan networks depending on
# NSX version
is_overlay = self._is_overlay_network(context, network_id)
net_type = "overlay" if is_overlay else "non-overlay"
return (is_overlay or
self._is_vlan_router_interface_supported()), net_type
def _has_no_dhcp_enabled_subnet(self, context, network):
# Check if there is no DHCP-enabled subnet in the network.
for subnet in network.subnets:
if subnet.enable_dhcp and subnet.ipv6_address_mode != 'slaac':
return False
return True
def _has_single_dhcp_enabled_subnet(self, context, network):
# Check if there is only one DHCP-enabled subnet in the network.
count = 0
for subnet in network.subnets:
if subnet.enable_dhcp:
count += 1
if count > 1:
return False
return True if count == 1 else False
def _cidrs_overlap(self, cidr0, cidr1):
return cidr0.first <= cidr1.last and cidr1.first <= cidr0.last
def _validate_address_space(self, context, subnet):
# get the subnet IPs
if ('allocation_pools' in subnet and
validators.is_attr_set(subnet['allocation_pools'])):
# use the pools instead of the cidr
subnet_networks = [
netaddr.IPRange(pool.get('start'), pool.get('end'))
for pool in subnet.get('allocation_pools')]
else:
cidr = subnet.get('cidr')
if not validators.is_attr_set(cidr):
return
subnet_networks = [netaddr.IPNetwork(subnet['cidr'])]
# Check if subnet overlaps with shared address space.
# This is checked on the backend when attaching subnet to a router.
shared_ips_cidrs = self._get_conf_attr('transit_networks')
for subnet_net in subnet_networks:
for shared_ips in shared_ips_cidrs:
if netaddr.IPSet(subnet_net) & netaddr.IPSet([shared_ips]):
msg = _("Subnet overlaps with shared address space "
"%s") % shared_ips
LOG.error(msg)
raise n_exc.InvalidInput(error_message=msg)
# Ensure that the NSX uplink cidr does not lie on the same subnet as
# the external subnet
filters = {'id': [subnet['network_id']],
'router:external': [True]}
external_nets = self.get_networks(context, filters=filters)
tier0_routers = [ext_net[pnet.PHYSICAL_NETWORK]
for ext_net in external_nets
if ext_net.get(pnet.PHYSICAL_NETWORK)]
for tier0_rtr in set(tier0_routers):
tier0_cidrs = self._get_tier0_uplink_cidrs(tier0_rtr)
for cidr in tier0_cidrs:
tier0_subnet = netaddr.IPNetwork(cidr).cidr
for subnet_network in subnet_networks:
if self._cidrs_overlap(tier0_subnet, subnet_network):
msg = _("External subnet cannot overlap with T0 "
"router cidr %s") % cidr
LOG.error(msg)
raise n_exc.InvalidInput(error_message=msg)
def _need_router_no_dnat_rules(self, subnet):
# NAT is not supported for IPv6
return (subnet['ip_version'] == 4)
def _need_router_snat_rules(self, context, router_id, subnet,
gw_address_scope):
# NAT is not supported for IPv6
if subnet['ip_version'] != 4:
return False
# if the subnets address scope is the same as the gateways:
# no need for SNAT
if gw_address_scope:
subnet_address_scope = self._get_subnetpool_address_scope(
context, subnet['subnetpool_id'])
if (gw_address_scope == subnet_address_scope):
LOG.info("No need for SNAT rule for router %(router)s "
"and subnet %(subnet)s because they use the "
"same address scope %(addr_scope)s.",
{'router': router_id,
'subnet': subnet['id'],
'addr_scope': gw_address_scope})
return False
return True
def _get_mdproxy_port_name(self, net_name, net_id):
return utils.get_name_and_uuid('%s-%s' % ('mdproxy',
net_name or 'network'),
net_id)
def _create_net_mdproxy_port(self, context, network, az, nsx_net_id):
if (not self.nsxlib or
not self._has_native_dhcp_metadata()):
return
is_ddi_network = self._is_ddi_supported_on_network(
context, network['id'])
if is_ddi_network:
# Enable native metadata proxy for this network.
tags = self.nsxlib.build_v3_tags_payload(
network, resource_type='os-neutron-net-id',
project_name=context.tenant_name)
name = self._get_mdproxy_port_name(network['name'],
network['id'])
md_port = self.nsxlib.logical_port.create(
nsx_net_id, az._native_md_proxy_uuid,
tags=tags, name=name,
attachment_type=nsxlib_consts.ATTACHMENT_MDPROXY)
LOG.debug("Created MD-Proxy logical port %(port)s "
"for network %(network)s",
{'port': md_port['id'],
'network': network['id']})
def _delete_nsx_port_by_network(self, network_id):
if not self.nsxlib:
return
port_id = self.nsxlib.get_id_by_resource_and_tag(
self.nsxlib.logical_port.resource_type,
'os-neutron-net-id', network_id)
if port_id:
self.nsxlib.logical_port.delete(port_id)
def _support_vlan_router_interfaces(self):
"""Should be implemented by each plugin"""
pass
def _validate_multiple_subnets_routers(self, context, router_id,
net_id, subnet):
network = self.get_network(context, net_id)
net_type = network.get(pnet.NETWORK_TYPE)
if (net_type and
not self._support_vlan_router_interfaces() and
not self._is_overlay_network(context, net_id)):
err_msg = (_("Only overlay networks can be attached to a logical "
"router. Network %(net_id)s is a %(net_type)s based "
"network") % {'net_id': net_id, 'net_type': net_type})
LOG.error(err_msg)
raise n_exc.InvalidInput(error_message=err_msg)
# Unable to attach a trunked network to a router interface
if cfg.CONF.vlan_transparent:
if network.get('vlan_transparent') is True:
err_msg = (_("Transparent VLAN networks cannot be attached to "
"a logical router."))
LOG.error(err_msg)
raise n_exc.InvalidInput(error_message=err_msg)
port_filters = {'device_owner': [l3_db.DEVICE_OWNER_ROUTER_INTF],
'network_id': [net_id]}
intf_ports = self.get_ports(context.elevated(), filters=port_filters)
router_ids = [port['device_id']
for port in intf_ports if port['device_id']]
if len(router_ids) > 0:
err_msg = _("Only one subnet of each IP version in a network "
"%(net_id)s can be attached to router, one subnet "
"is already attached to router %(router_id)s") % {
'net_id': net_id,
'router_id': router_ids[0]}
if router_id in router_ids:
# We support 2 subnets from same net only for dual stack case
if not subnet:
# No IP provided on connected port
LOG.error(err_msg)
raise n_exc.InvalidInput(error_message=err_msg)
for port in intf_ports:
if port['device_id'] != router_id:
continue
if 'fixed_ips' in port and port['fixed_ips']:
ex_subnet = self.get_subnet(
context.elevated(),
port['fixed_ips'][0]['subnet_id'])
if ex_subnet['ip_version'] == subnet['ip_version']:
# attach to the same router with same IP version
LOG.error(err_msg)
raise n_exc.InvalidInput(error_message=err_msg)
else:
# attach to multiple routers
LOG.error(err_msg)
raise l3_exc.RouterInterfaceAttachmentConflict(reason=err_msg)
def _router_has_edge_fw_rules(self, context, router):
if not router.gw_port_id:
# No GW -> No rule on the edge firewall
return False
if self.fwaas_callbacks and self.fwaas_callbacks.fwaas_enabled:
ports = self._get_router_interfaces(context, router.id)
return self.fwaas_callbacks.router_with_fwg(context, ports)
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