mirror of
https://github.com/openvswitch/ovs
synced 2025-08-25 19:37:14 +00:00
0b2c7e690a
It's becoming more common that OSes include "ip" but not "ifconfig", so it's best to avoid using the latter. This commit removes most references to "ifconfig" and replaces them by "ip". It also adds a build-time check to make it harder to introduce new uses of "ifconfig". There are important differences between "ifconfig" and "ip": - An "ifconfig" command that sets an IP address also brings the interface up, but a similar "ip addr add" command does not, so it is often necessary (or at least precautionary) to add an "ip link set <dev> up" command. - "ifconfig" can infer a netmask from an IP adddress, but "ip" always assumes /32 if none is given. - "ifconfig" with address 0.0.0.0 removes any configured IP address, but "ip addr add" does not, so "ifconfig <dev> 0.0.0.0" must be replaced by "ip addr del" or "ip addr flush". Signed-off-by: Ben Pfaff <blp@ovn.org>
108 lines
3.3 KiB
Python
108 lines
3.3 KiB
Python
# Copyright (c) 2012 Nicira, Inc.
|
|
#
|
|
# 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.
|
|
|
|
"""
|
|
vswitch module allows its callers to interact with OVS DB.
|
|
"""
|
|
import util
|
|
|
|
|
|
def ovs_vsctl_add_bridge(bridge):
|
|
"""
|
|
This function creates an OVS bridge.
|
|
"""
|
|
ret, _out, _err = util.start_process(["ovs-vsctl", "add-br", bridge])
|
|
return ret
|
|
|
|
|
|
def ovs_vsctl_del_bridge(bridge):
|
|
"""
|
|
This function deletes the OVS bridge.
|
|
"""
|
|
ret, _out, _err = util.start_process(["ovs-vsctl", "del-br", bridge])
|
|
return ret
|
|
|
|
|
|
def ovs_vsctl_del_pbridge(bridge, iface):
|
|
"""
|
|
This function deletes the OVS bridge and assigns the bridge IP address
|
|
back to the iface.
|
|
"""
|
|
(ip_addr, mask) = util.interface_get_ip(bridge)
|
|
util.interface_assign_ip(iface, ip_addr, mask)
|
|
util.interface_up(iface)
|
|
util.move_routes(bridge, iface)
|
|
return ovs_vsctl_del_bridge(bridge)
|
|
|
|
|
|
def ovs_vsctl_is_ovs_bridge(bridge):
|
|
"""
|
|
This function verifies whether given port is an OVS bridge. If it is an
|
|
OVS bridge then it will return True.
|
|
"""
|
|
ret, _out, _err = util.start_process(["ovs-vsctl", "br-exists", bridge])
|
|
return ret == 0
|
|
|
|
|
|
def ovs_vsctl_add_port_to_bridge(bridge, iface):
|
|
"""
|
|
This function adds given interface to the bridge.
|
|
"""
|
|
ret, _out, _err = util.start_process(["ovs-vsctl", "add-port", bridge,
|
|
iface])
|
|
return ret
|
|
|
|
|
|
def ovs_vsctl_del_port_from_bridge(port):
|
|
"""
|
|
This function removes given port from a OVS bridge.
|
|
"""
|
|
ret, _out, _err = util.start_process(["ovs-vsctl", "del-port", port])
|
|
return ret
|
|
|
|
|
|
def ovs_vsctl_set(table, record, column, key, value):
|
|
"""
|
|
This function allows to alter the OVS database. If column is a map, then
|
|
caller should also set the key, otherwise the key should be left as an
|
|
empty string.
|
|
"""
|
|
if key is None:
|
|
index = column
|
|
else:
|
|
index = "%s:%s" % (column, key)
|
|
index_value = "%s=%s" % (index, value)
|
|
ret, _out, _err = util.start_process(["ovs-vsctl", "set", table, record,
|
|
index_value])
|
|
return ret
|
|
|
|
|
|
def ovs_get_physical_interface(bridge):
|
|
"""
|
|
This function tries to figure out which is the physical interface that
|
|
belongs to the bridge. If there are multiple physical interfaces assigned
|
|
to this bridge then it will return the first match.
|
|
"""
|
|
ret, out, _err = util.start_process(["ovs-vsctl", "list-ifaces", bridge])
|
|
|
|
if ret == 0:
|
|
ifaces = out.splitlines()
|
|
for iface in ifaces:
|
|
ret, out, _err = util.start_process(["ovs-vsctl", "get",
|
|
"Interface", iface, "type"])
|
|
if ret == 0:
|
|
if ('""' in out) or ('system' in out):
|
|
return iface # this should be the physical interface
|
|
return None
|