/usr/lib/python3/dist-packages/vif_plug_linux_bridge/linux_bridge.py is in python3-os-vif 1.2.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | # Derived from nova/virt/libvirt/vif.py
#
# Copyright (C) 2011 Midokura KK
# Copyright (C) 2011 Nicira, Inc
# Copyright 2011 OpenStack Foundation
# 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.
from os_vif import objects
from os_vif import plugin
from oslo_config import cfg
from vif_plug_linux_bridge import iptables
from vif_plug_linux_bridge import linux_net
class LinuxBridgePlugin(plugin.PluginBase):
"""A VIF type that uses a standard Linux bridge device."""
CONFIG_OPTS = (
cfg.BoolOpt('use_ipv6',
default=False,
help='Use IPv6',
deprecated_group="DEFAULT"),
cfg.StrOpt('iptables_top_regex',
default='',
help='Regular expression to match the iptables rule that '
'should always be on the top.',
deprecated_group="DEFAULT"),
cfg.StrOpt('iptables_bottom_regex',
default='',
help='Regular expression to match the iptables rule that '
'should always be on the bottom.',
deprecated_group="DEFAULT"),
cfg.StrOpt('iptables_drop_action',
default='DROP',
help='The table that iptables to jump to when a packet is '
'to be dropped.',
deprecated_group="DEFAULT"),
cfg.MultiStrOpt('forward_bridge_interface',
default=['all'],
help='An interface that bridges can forward to. If '
'this is set to all then all traffic will be '
'forwarded. Can be specified multiple times.',
deprecated_group="DEFAULT"),
cfg.StrOpt('vlan_interface',
help='VLANs will bridge into this interface if set',
deprecated_group="DEFAULT"),
cfg.StrOpt('flat_interface',
help='FlatDhcp will bridge into this interface if set',
deprecated_group="DEFAULT"),
cfg.IntOpt('network_device_mtu',
default=1500,
help='MTU setting for network interface.',
deprecated_group="DEFAULT"),
)
def __init__(self, config):
super(LinuxBridgePlugin, self).__init__(config)
ipm = iptables.IptablesManager(
use_ipv6=config.use_ipv6,
iptables_top_regex=config.iptables_top_regex,
iptables_bottom_regex=config.iptables_bottom_regex,
iptables_drop_action=config.iptables_drop_action,
forward_bridge_interface=config.forward_bridge_interface)
linux_net.configure(ipm)
def describe(self):
return objects.host_info.HostPluginInfo(
plugin_name="linux_bridge",
vif_info=[
objects.host_info.HostVIFInfo(
vif_object_name=objects.vif.VIFBridge.__name__,
min_version="1.0",
max_version="1.0")
])
def plug(self, vif, instance_info):
"""Ensure that the bridge exists, and add VIF to it."""
network = vif.network
bridge_name = vif.bridge_name
if not network.multi_host and network.should_provide_bridge:
if network.should_provide_vlan:
iface = self.config.vlan_interface or network.bridge_interface
mtu = self.config.network_device_mtu
linux_net.ensure_vlan_bridge(network.vlan,
bridge_name, iface, mtu=mtu)
else:
iface = self.config.flat_interface or network.bridge_interface
linux_net.ensure_bridge(bridge_name, iface)
def unplug(self, vif, instance_info):
# Nothing required to unplug a port for a VIF using standard
# Linux bridge device...
pass
|