def set_numvfs_for_pf(pf, vf_count):
"""
Allocate the required number of VFs for the selected PF.
"""
if vf_count > 256:
raise ConfigurationError(
'cannot allocate more VFs for PF %s than the SR-IOV maximum: %s > 256'
% (pf, vf_count))
devdir = os.path.join('/sys/class/net', pf, 'device')
numvfs_path = os.path.join(devdir, 'sriov_numvfs')
totalvfs_path = os.path.join(devdir, 'sriov_totalvfs')
try:
with open(totalvfs_path) as f:
vf_max = int(f.read().strip())
except IOError as e:
raise RuntimeError('failed parsing sriov_totalvfs for %s: %s' %
(pf, str(e)))
except ValueError:
raise RuntimeError('invalid sriov_totalvfs value for %s' % pf)
if vf_count > vf_max:
raise ConfigurationError(
'cannot allocate more VFs for PF %s than supported: %s > %s (sriov_totalvfs)'
% (pf, vf_count, vf_max))
try:
with open(numvfs_path, 'w') as f:
f.write(str(vf_count))
except IOError as e:
bail = True
if e.errno == 16: # device or resource busy
logging.warning(
'device or resource busy while setting sriov_numvfs for %s, trying workaround'
% pf)
try:
# doing this in two open/close sequences so that
# it's as close to writing via shell as possible
with open(numvfs_path, 'w') as f:
f.write('0')
with open(numvfs_path, 'w') as f:
f.write(str(vf_count))
except IOError as e_inner:
e = e_inner
else:
bail = False
if bail:
raise RuntimeError('failed setting sriov_numvfs to %s for %s: %s' %
(vf_count, pf, str(e)))
return True
def _get_target_interface(interfaces, config_manager, pf_link, pfs):
if pf_link not in pfs:
# handle the match: syntax, get the actual device name
pf_match = config_manager.ethernets[pf_link].get('match')
if pf_match:
by_name = pf_match.get('name')
by_mac = pf_match.get('macaddress')
by_driver = pf_match.get('driver')
for interface in interfaces:
if ((by_name and
not utils.is_interface_matching_name(interface, by_name))
or
(by_mac and not utils.is_interface_matching_macaddress(
interface, by_mac)) or
(by_driver and not utils.is_interface_matching_driver_name(
interface, by_driver))):
continue
# we have a matching PF
# store the matching interface in the dictionary of
# active PFs, but error out if we matched more than one
if pf_link in pfs:
raise ConfigurationError(
'matched more than one interface for a PF device: %s' %
pf_link)
pfs[pf_link] = interface
else:
# no match field, assume entry name is interface name
if pf_link in interfaces:
pfs[pf_link] = pf_link
return pfs.get(pf_link, None)
def get_vf_count_and_functions(interfaces, config_manager, vf_counts, vfs,
pfs):
"""
Go through the list of netplan ethernet devices and identify which are
PFs and VFs, matching the former with actual networking interfaces.
Count how many VFs each PF will need.
"""
explicit_counts = {}
for ethernet, settings in config_manager.ethernets.items():
if not settings:
continue
if ethernet == 'renderer':
continue
# we now also support explicitly stating how many VFs should be
# allocated for a PF
explicit_num = settings.get('virtual-function-count')
if explicit_num:
pf = _get_target_interface(interfaces, config_manager, ethernet,
pfs)
if pf:
explicit_counts[pf] = explicit_num
continue
pf_link = settings.get('link')
if pf_link and pf_link in config_manager.ethernets:
_get_target_interface(interfaces, config_manager, pf_link, pfs)
if pf_link in pfs:
vf_counts[pfs[pf_link]] += 1
else:
logging.warning(
'could not match physical interface for the defined PF: %s'
% pf_link)
# continue looking for other VFs
continue
# we can't yet perform matching on VFs as those are only
# created later - but store, for convenience, all the valid
# VFs that we encounter so far
vfs[ethernet] = None
# sanity check: since we can explicitly state the VF count, make sure
# that this number isn't smaller than the actual number of VFs declared
# the explicit number also overrides the number of actual VFs
for pf, count in explicit_counts.items():
if pf in vf_counts and vf_counts[pf] > count:
raise ConfigurationError(
'more VFs allocated than the explicit size declared: %s > %s' %
(vf_counts[pf], count))
vf_counts[pf] = count
def _get_target_interface(interfaces, config_manager, pf_link, pfs):
if pf_link not in pfs:
# handle the match: syntax, get the actual device name
pf_dev = config_manager.ethernets[pf_link]
pf_match = pf_dev.get('match')
if pf_match:
# now here it's a bit tricky
set_name = pf_dev.get('set-name')
if set_name and set_name in interfaces:
# if we had a match: stanza and set-name: this means we should
# assume that, if found, the interface has already been
# renamed - use the new name
pfs[pf_link] = set_name
else:
# no set-name (or interfaces not yet renamed) so we need to do
# the matching ourselves
by_name = pf_match.get('name')
by_mac = pf_match.get('macaddress')
by_driver = pf_match.get('driver')
for interface in interfaces:
if ((by_name and not utils.is_interface_matching_name(
interface, by_name)) or
(by_mac and not utils.is_interface_matching_macaddress(
interface, by_mac)) or
(by_driver
and not utils.is_interface_matching_driver_name(
interface, by_driver))):
continue
# we have a matching PF
# store the matching interface in the dictionary of
# active PFs, but error out if we matched more than one
if pf_link in pfs:
raise ConfigurationError(
'matched more than one interface for a PF device: %s'
% pf_link)
pfs[pf_link] = interface
else:
# no match field, assume entry name is the interface name
if pf_link in interfaces:
pfs[pf_link] = pf_link
return pfs.get(pf_link, None)
def command_apply(
run_generate=True,
sync=False,
exit_on_error=True): # pragma: nocover (covered in autopkgtest)
if run_generate and subprocess.call([utils.get_generator_path()]) != 0:
if exit_on_error:
sys.exit(os.EX_CONFIG)
else:
raise ConfigurationError(
"the configuration could not be generated")
devices = os.listdir('/sys/class/net')
restart_networkd = bool(glob.glob('/run/systemd/network/*netplan-*'))
restart_nm = bool(
glob.glob('/run/NetworkManager/system-connections/netplan-*'))
# stop backends
if restart_networkd:
logging.debug(
'netplan generated networkd configuration exists, restarting networkd'
)
utils.systemctl_networkd('stop',
sync=sync,
extra_services=['netplan-wpa@*.service'])
else:
logging.debug('no netplan generated networkd configuration exists')
if restart_nm:
logging.debug(
'netplan generated NM configuration exists, restarting NM')
if utils.nm_running():
# restarting NM does not cause new config to be applied, need to shut down devices first
for device in devices:
# ignore failures here -- some/many devices might not be managed by NM
try:
utils.nmcli(['device', 'disconnect', device])
except subprocess.CalledProcessError:
pass
utils.systemctl_network_manager('stop', sync=sync)
else:
logging.debug('no netplan generated NM configuration exists')
# force-hotplug all "down" network interfaces to apply renames
any_replug = False
for device in devices:
if not os.path.islink('/sys/class/net/' + device):
continue
if NetplanApply.replug(device):
any_replug = True
else:
# if the interface is up, we can still apply .link file changes
logging.debug('netplan triggering .link rules for %s', device)
with open(os.devnull, 'w') as fd:
subprocess.check_call([
'udevadm', 'test-builtin', 'net_setup_link',
'/sys/class/net/' + device
],
stdout=fd,
stderr=fd)
if any_replug:
subprocess.check_call(['udevadm', 'settle'])
# (re)start backends
if restart_networkd:
netplan_wpa = [
os.path.basename(f) for f in glob.glob(
'/run/systemd/system/*.wants/netplan-wpa@*.service')
]
utils.systemctl_networkd('start',
sync=sync,
extra_services=netplan_wpa)
if restart_nm:
utils.systemctl_network_manager('start', sync=sync)
def command_apply(
run_generate=True,
sync=False,
exit_on_error=True): # pragma: nocover (covered in autopkgtest)
# if we are inside a snap, then call dbus to run netplan apply instead
if "SNAP" in os.environ:
# TODO: maybe check if we are inside a classic snap and don't do
# this if we are in a classic snap?
busctl = shutil.which("busctl")
if busctl is None:
raise RuntimeError("missing busctl utility")
res = subprocess.call([
busctl,
"call",
"--quiet",
"--system",
"io.netplan.Netplan", # the service
"/io/netplan/Netplan", # the object
"io.netplan.Netplan", # the interface
"Apply", # the method
])
if res != 0:
if exit_on_error:
sys.exit(res)
elif res == 130:
raise PermissionError(
"failed to communicate with dbus service")
elif res == 1:
raise RuntimeError(
"failed to communicate with dbus service")
else:
return
old_files_networkd = bool(glob.glob('/run/systemd/network/*netplan-*'))
old_files_nm = bool(
glob.glob('/run/NetworkManager/system-connections/netplan-*'))
generator_call = []
generate_out = None
if 'NETPLAN_PROFILE' in os.environ:
generator_call.extend(['valgrind', '--leak-check=full'])
generate_out = subprocess.STDOUT
generator_call.append(utils.get_generator_path())
if run_generate and subprocess.call(generator_call,
stderr=generate_out) != 0:
if exit_on_error:
sys.exit(os.EX_CONFIG)
else:
raise ConfigurationError(
"the configuration could not be generated")
config_manager = ConfigManager()
devices = netifaces.interfaces()
# Re-start service when
# 1. We have configuration files for it
# 2. Previously we had config files for it but not anymore
# Ideally we should compare the content of the *netplan-* files before and
# after generation to minimize the number of re-starts, but the conditions
# above works too.
restart_networkd = bool(glob.glob('/run/systemd/network/*netplan-*'))
if not restart_networkd and old_files_networkd:
restart_networkd = True
restart_nm = bool(
glob.glob('/run/NetworkManager/system-connections/netplan-*'))
if not restart_nm and old_files_nm:
restart_nm = True
# stop backends
if restart_networkd:
logging.debug(
'netplan generated networkd configuration changed, restarting networkd'
)
utils.systemctl_networkd('stop',
sync=sync,
extra_services=['netplan-wpa@*.service'])
else:
logging.debug('no netplan generated networkd configuration exists')
if restart_nm:
logging.debug(
'netplan generated NM configuration changed, restarting NM')
if utils.nm_running():
# restarting NM does not cause new config to be applied, need to shut down devices first
for device in devices:
# ignore failures here -- some/many devices might not be managed by NM
try:
utils.nmcli(['device', 'disconnect', device])
except subprocess.CalledProcessError:
pass
utils.systemctl_network_manager('stop', sync=sync)
else:
logging.debug('no netplan generated NM configuration exists')
# Refresh devices now; restarting a backend might have made something appear.
devices = netifaces.interfaces()
# evaluate config for extra steps we need to take (like renaming)
# for now, only applies to non-virtual (real) devices.
config_manager.parse()
changes = NetplanApply.process_link_changes(devices, config_manager)
# if the interface is up, we can still apply some .link file changes
devices = netifaces.interfaces()
for device in devices:
logging.debug('netplan triggering .link rules for %s', device)
try:
subprocess.check_call([
'udevadm', 'test-builtin', 'net_setup_link',
'/sys/class/net/' + device
],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
except subprocess.CalledProcessError:
logging.debug('Ignoring device without syspath: %s', device)
# apply renames to "down" devices
for iface, settings in changes.items():
if settings.get('name'):
subprocess.check_call([
'ip', 'link', 'set', 'dev', iface, 'name',
settings.get('name')
],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
subprocess.check_call(['udevadm', 'settle'])
# (re)start backends
if restart_networkd:
netplan_wpa = [
os.path.basename(f) for f in glob.glob(
'/run/systemd/system/*.wants/netplan-wpa@*.service')
]
utils.systemctl_networkd('start',
sync=sync,
extra_services=netplan_wpa)
if restart_nm:
utils.systemctl_network_manager('start', sync=sync)
def command_apply(self, run_generate=True, sync=False, exit_on_error=True): # pragma: nocover (covered in autopkgtest)
config_manager = ConfigManager()
# For certain use-cases, we might want to only apply specific configuration.
# If we only need SR-IOV configuration, do that and exit early.
if self.sriov_only:
NetplanApply.process_sriov_config(config_manager, exit_on_error)
return
# If we only need OpenVSwitch cleanup, do that and exit early.
elif self.only_ovs_cleanup:
NetplanApply.process_ovs_cleanup(config_manager, False, False, exit_on_error)
return
# if we are inside a snap, then call dbus to run netplan apply instead
if "SNAP" in os.environ:
# TODO: maybe check if we are inside a classic snap and don't do
# this if we are in a classic snap?
busctl = shutil.which("busctl")
if busctl is None:
raise RuntimeError("missing busctl utility")
# XXX: DO NOT TOUCH or change this API call, it is used by snapd to communicate
# using core20 netplan binary/client/CLI on core18 base systems. Any change
# must be agreed upon with the snapd team, so we don't break support for
# base systems running older netplan versions.
res = subprocess.call([busctl, "call", "--quiet", "--system",
"io.netplan.Netplan", # the service
"/io/netplan/Netplan", # the object
"io.netplan.Netplan", # the interface
"Apply", # the method
])
if res != 0:
if exit_on_error:
sys.exit(res)
elif res == 130:
raise PermissionError(
"failed to communicate with dbus service")
elif res == 1:
raise RuntimeError(
"failed to communicate with dbus service")
else:
return
ovs_cleanup_service = '/run/systemd/system/netplan-ovs-cleanup.service'
old_files_networkd = bool(glob.glob('/run/systemd/network/*netplan-*'))
old_ovs_glob = glob.glob('/run/systemd/system/netplan-ovs-*')
# Ignore netplan-ovs-cleanup.service, as it can always be there
if ovs_cleanup_service in old_ovs_glob:
old_ovs_glob.remove(ovs_cleanup_service)
old_files_ovs = bool(old_ovs_glob)
old_nm_glob = glob.glob('/run/NetworkManager/system-connections/netplan-*')
nm_ifaces = utils.nm_interfaces(old_nm_glob, netifaces.interfaces())
old_files_nm = bool(old_nm_glob)
generator_call = []
generate_out = None
if 'NETPLAN_PROFILE' in os.environ:
generator_call.extend(['valgrind', '--leak-check=full'])
generate_out = subprocess.STDOUT
generator_call.append(utils.get_generator_path())
if run_generate and subprocess.call(generator_call, stderr=generate_out) != 0:
if exit_on_error:
sys.exit(os.EX_CONFIG)
else:
raise ConfigurationError("the configuration could not be generated")
devices = netifaces.interfaces()
# Re-start service when
# 1. We have configuration files for it
# 2. Previously we had config files for it but not anymore
# Ideally we should compare the content of the *netplan-* files before and
# after generation to minimize the number of re-starts, but the conditions
# above works too.
restart_networkd = bool(glob.glob('/run/systemd/network/*netplan-*'))
if not restart_networkd and old_files_networkd:
restart_networkd = True
restart_ovs_glob = glob.glob('/run/systemd/system/netplan-ovs-*')
# Ignore netplan-ovs-cleanup.service, as it can always be there
if ovs_cleanup_service in restart_ovs_glob:
restart_ovs_glob.remove(ovs_cleanup_service)
restart_ovs = bool(restart_ovs_glob)
if not restart_ovs and old_files_ovs:
# OVS is managed via systemd units
restart_networkd = True
restart_nm_glob = glob.glob('/run/NetworkManager/system-connections/netplan-*')
nm_ifaces.update(utils.nm_interfaces(restart_nm_glob, devices))
restart_nm = bool(restart_nm_glob)
if not restart_nm and old_files_nm:
restart_nm = True
# stop backends
if restart_networkd:
logging.debug('netplan generated networkd configuration changed, reloading networkd')
# Running 'systemctl daemon-reload' will re-run the netplan systemd generator,
# so let's make sure we only run it iff we're willing to run 'netplan generate'
if run_generate:
utils.systemctl_daemon_reload()
# Clean up any old netplan related OVS ports/bonds/bridges, if applicable
NetplanApply.process_ovs_cleanup(config_manager, old_files_ovs, restart_ovs, exit_on_error)
wpa_services = ['netplan-wpa-*.service']
# Historically (up to v0.98) we had netplan-wpa@*.service files, in case of an
# upgraded system, we need to make sure to stop those.
if utils.systemctl_is_active('netplan-wpa@*.service'):
wpa_services.insert(0, 'netplan-wpa@*.service')
utils.systemctl('stop', wpa_services, sync=sync)
else:
logging.debug('no netplan generated networkd configuration exists')
if restart_nm:
logging.debug('netplan generated NM configuration changed, restarting NM')
if utils.nm_running():
# restarting NM does not cause new config to be applied, need to shut down devices first
for device in devices:
if device not in nm_ifaces:
continue # do not touch this interface
# ignore failures here -- some/many devices might not be managed by NM
try:
utils.nmcli(['device', 'disconnect', device])
except subprocess.CalledProcessError:
pass
utils.systemctl_network_manager('stop', sync=sync)
else:
logging.debug('no netplan generated NM configuration exists')
# Refresh devices now; restarting a backend might have made something appear.
devices = netifaces.interfaces()
# evaluate config for extra steps we need to take (like renaming)
# for now, only applies to non-virtual (real) devices.
config_manager.parse()
changes = NetplanApply.process_link_changes(devices, config_manager)
# if the interface is up, we can still apply some .link file changes
# but we cannot apply the interface rename via udev, as it won't touch
# the interface name, if it was already renamed once (e.g. during boot),
# because of the NamePolicy=keep default:
# https://www.freedesktop.org/software/systemd/man/systemd.net-naming-scheme.html
devices = netifaces.interfaces()
for device in devices:
logging.debug('netplan triggering .link rules for %s', device)
try:
subprocess.check_call(['udevadm', 'test-builtin',
'net_setup_link',
'/sys/class/net/' + device],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
except subprocess.CalledProcessError:
logging.debug('Ignoring device without syspath: %s', device)
# apply some more changes manually
for iface, settings in changes.items():
# rename non-critical network interfaces
if settings.get('name'):
# bring down the interface, using its current (matched) interface name
subprocess.check_call(['ip', 'link', 'set', 'dev', iface, 'down'],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
# rename the interface to the name given via 'set-name'
subprocess.check_call(['ip', 'link', 'set',
'dev', iface,
'name', settings.get('name')],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
subprocess.check_call(['udevadm', 'settle'])
# apply any SR-IOV related changes, if applicable
NetplanApply.process_sriov_config(config_manager, exit_on_error)
# (re)start backends
if restart_networkd:
netplan_wpa = [os.path.basename(f) for f in glob.glob('/run/systemd/system/*.wants/netplan-wpa-*.service')]
# exclude the special 'netplan-ovs-cleanup.service' unit
netplan_ovs = [os.path.basename(f) for f in glob.glob('/run/systemd/system/*.wants/netplan-ovs-*.service')
if not f.endswith('/' + OVS_CLEANUP_SERVICE)]
# Run 'systemctl start' command synchronously, to avoid race conditions
# with 'oneshot' systemd service units, e.g. netplan-ovs-*.service.
utils.networkctl_reconfigure(utils.networkd_interfaces())
# 1st: execute OVS cleanup, to avoid races while applying OVS config
utils.systemctl('start', [OVS_CLEANUP_SERVICE], sync=True)
# 2nd: start all other services
utils.systemctl('start', netplan_wpa + netplan_ovs, sync=True)
if restart_nm:
# Flush all IP addresses of NM managed interfaces, to avoid NM creating
# new, non netplan-* connection profiles, using the existing IPs.
for iface in utils.nm_interfaces(restart_nm_glob, devices):
utils.ip_addr_flush(iface)
utils.systemctl_network_manager('start', sync=sync)
def apply_sriov_config(interfaces, config_manager):
"""
Go through all interfaces, identify which ones are SR-IOV VFs, create
them and perform all other necessary setup.
"""
# for sr-iov devices, we identify VFs by them having a link: field
# pointing to an PF. So let's browse through all ethernet devices,
# find all that are VFs and count how many of those are linked to
# particular PFs, as we need to then set the numvfs for each.
vf_counts = defaultdict(int)
# we also store all matches between VF/PF netplan entry names and
# interface that they're currently matching to
vfs = {}
pfs = {}
get_vf_count_and_functions(interfaces, config_manager, vf_counts, vfs, pfs)
# setup the required number of VFs per PF
# at the same time store which PFs got changed in case the NICs
# require some special quirks for the VF number to change
vf_count_changed = []
if vf_counts:
for pf, vf_count in vf_counts.items():
if not set_numvfs_for_pf(pf, vf_count):
continue
vf_count_changed.append(pf)
if vf_count_changed:
# some cards need special treatment when we want to change the
# number of enabled VFs
for pf in vf_count_changed:
perform_hardware_specific_quirks(pf)
# also, since the VF number changed, the interfaces list also
# changed, so we need to refresh it
interfaces = netifaces.interfaces()
# now in theory we should have all the new VFs set up and existing;
# this is needed because we will have to now match the defined VF
# entries to existing interfaces, otherwise we won't be able to set
# filtered VLANs for those.
# XXX: does matching those even make sense?
for vf in vfs:
settings = config_manager.ethernets.get(vf)
match = settings.get('match')
if match:
# right now we only match by name, as I don't think matching per
# driver and/or macaddress makes sense
by_name = match.get('name')
# by_mac = match.get('macaddress')
# by_driver = match.get('driver')
# TODO: print warning if other matches are provided
for interface in interfaces:
if by_name and not utils.is_interface_matching_name(
interface, by_name):
continue
if vf in vfs and vfs[vf]:
raise ConfigurationError(
'matched more than one interface for a VF device: %s' %
vf)
vfs[vf] = interface
else:
if vf in interfaces:
vfs[vf] = vf
filtered_vlans_set = set()
for vlan, settings in config_manager.vlans.items():
# there is a special sriov vlan renderer that one can use to mark
# a selected vlan to be done in hardware (VLAN filtering)
if settings.get('renderer') == 'sriov':
# this only works for SR-IOV VF interfaces
link = settings.get('link')
vlan_id = settings.get('id')
if not vlan_id:
raise ConfigurationError(
'no id property defined for SR-IOV vlan %s' % vlan)
vf = vfs.get(link)
if not vf:
# it is possible this is not an error, for instance when
# the configuration has been defined 'for the future'
# XXX: but maybe we should error out here as well?
logging.warning(
'SR-IOV vlan defined for %s but link %s is either not a VF or has no matches'
% (vlan, link))
continue
# get the parent pf interface
# first we fetch the related vf netplan entry
vf_parent_entry = config_manager.ethernets.get(link).get('link')
# and finally, get the matched pf interface
pf = pfs.get(vf_parent_entry)
if vf in filtered_vlans_set:
raise ConfigurationError(
'interface %s for netplan device %s (%s) already has an SR-IOV vlan defined'
% (vf, link, vlan))
apply_vlan_filter_for_vf(pf, vf, vlan, vlan_id)
filtered_vlans_set.add(vf)
def command_apply(
run_generate=True,
sync=False,
exit_on_error=True): # pragma: nocover (covered in autopkgtest)
if run_generate and subprocess.call([utils.get_generator_path()]) != 0:
if exit_on_error:
sys.exit(os.EX_CONFIG)
else:
raise ConfigurationError(
"the configuration could not be generated")
config_manager = ConfigManager()
devices = netifaces.interfaces()
restart_networkd = bool(glob.glob('/run/systemd/network/*netplan-*'))
restart_nm = bool(
glob.glob('/run/NetworkManager/system-connections/netplan-*'))
# stop backends
if restart_networkd:
logging.debug(
'netplan generated networkd configuration exists, restarting networkd'
)
utils.systemctl_networkd('stop',
sync=sync,
extra_services=['netplan-wpa@*.service'])
else:
logging.debug('no netplan generated networkd configuration exists')
if restart_nm:
logging.debug(
'netplan generated NM configuration exists, restarting NM')
if utils.nm_running():
# restarting NM does not cause new config to be applied, need to shut down devices first
for device in devices:
# ignore failures here -- some/many devices might not be managed by NM
try:
utils.nmcli(['device', 'disconnect', device])
except subprocess.CalledProcessError:
pass
utils.systemctl_network_manager('stop', sync=sync)
else:
logging.debug('no netplan generated NM configuration exists')
# evaluate config for extra steps we need to take (like renaming)
# for now, only applies to non-virtual (real) devices.
config_manager.parse()
changes = NetplanApply.process_link_changes(devices, config_manager)
# if the interface is up, we can still apply some .link file changes
for device in devices:
logging.debug('netplan triggering .link rules for %s', device)
subprocess.check_call([
'udevadm', 'test-builtin', 'net_setup_link',
'/sys/class/net/' + device
],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
# apply renames to "down" devices
for iface, settings in changes.items():
if settings.get('name'):
subprocess.check_call([
'ip', 'link', 'set', 'dev', iface, 'name',
settings.get('name')
],
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL)
subprocess.check_call(['udevadm', 'settle'])
# (re)start backends
if restart_networkd:
netplan_wpa = [
os.path.basename(f) for f in glob.glob(
'/run/systemd/system/*.wants/netplan-wpa@*.service')
]
utils.systemctl_networkd('start',
sync=sync,
extra_services=netplan_wpa)
if restart_nm:
utils.systemctl_network_manager('start', sync=sync)