diff options
Diffstat (limited to 'cloudinit/net/network_state.py')
| -rw-r--r-- | cloudinit/net/network_state.py | 125 |
1 files changed, 92 insertions, 33 deletions
diff --git a/cloudinit/net/network_state.py b/cloudinit/net/network_state.py index f76e508a..63d6e291 100644 --- a/cloudinit/net/network_state.py +++ b/cloudinit/net/network_state.py @@ -10,19 +10,23 @@ import logging import socket import struct -import six - +from cloudinit import safeyaml from cloudinit import util LOG = logging.getLogger(__name__) NETWORK_STATE_VERSION = 1 +IPV6_DYNAMIC_TYPES = ['dhcp6', + 'ipv6_slaac', + 'ipv6_dhcpv6-stateless', + 'ipv6_dhcpv6-stateful'] NETWORK_STATE_REQUIRED_KEYS = { 1: ['version', 'config', 'network_state'], } NETWORK_V2_KEY_FILTER = [ - 'addresses', 'dhcp4', 'dhcp6', 'gateway4', 'gateway6', 'interfaces', - 'match', 'mtu', 'nameservers', 'renderer', 'set-name', 'wakeonlan' + 'addresses', 'dhcp4', 'dhcp4-overrides', 'dhcp6', 'dhcp6-overrides', + 'gateway4', 'gateway6', 'interfaces', 'match', 'mtu', 'nameservers', + 'renderer', 'set-name', 'wakeonlan', 'accept-ra' ] NET_CONFIG_TO_V2 = { @@ -67,7 +71,7 @@ def parse_net_config_data(net_config, skip_broken=True): # pass the whole net-config as-is config = net_config - if version and config: + if version and config is not None: nsi = NetworkStateInterpreter(version=version, config=config) nsi.parse_config(skip_broken=skip_broken) state = nsi.get_network_state() @@ -148,6 +152,7 @@ class NetworkState(object): self._network_state = copy.deepcopy(network_state) self._version = version self.use_ipv6 = network_state.get('use_ipv6', False) + self._has_default_route = None @property def config(self): @@ -157,14 +162,6 @@ class NetworkState(object): def version(self): return self._version - def iter_routes(self, filter_func=None): - for route in self._network_state.get('routes', []): - if filter_func is not None: - if filter_func(route): - yield route - else: - yield route - @property def dns_nameservers(self): try: @@ -179,18 +176,49 @@ class NetworkState(object): except KeyError: return [] + @property + def has_default_route(self): + if self._has_default_route is None: + self._has_default_route = self._maybe_has_default_route() + return self._has_default_route + def iter_interfaces(self, filter_func=None): ifaces = self._network_state.get('interfaces', {}) - for iface in six.itervalues(ifaces): + for iface in ifaces.values(): if filter_func is None: yield iface else: if filter_func(iface): yield iface + def iter_routes(self, filter_func=None): + for route in self._network_state.get('routes', []): + if filter_func is not None: + if filter_func(route): + yield route + else: + yield route + + def _maybe_has_default_route(self): + for route in self.iter_routes(): + if self._is_default_route(route): + return True + for iface in self.iter_interfaces(): + for subnet in iface.get('subnets', []): + for route in subnet.get('routes', []): + if self._is_default_route(route): + return True + return False + + def _is_default_route(self, route): + default_nets = ('::', '0.0.0.0') + return ( + route.get('prefix') == 0 + and route.get('network') in default_nets + ) -@six.add_metaclass(CommandHandlerMeta) -class NetworkStateInterpreter(object): + +class NetworkStateInterpreter(metaclass=CommandHandlerMeta): initial_network_state = { 'interfaces': {}, @@ -228,7 +256,7 @@ class NetworkStateInterpreter(object): 'config': self._config, 'network_state': self._network_state, } - return util.yaml_dumps(state) + return safeyaml.dumps(state) def load(self, state): if 'version' not in state: @@ -247,7 +275,7 @@ class NetworkStateInterpreter(object): setattr(self, key, state[key]) def dump_network_state(self): - return util.yaml_dumps(self._network_state) + return safeyaml.dumps(self._network_state) def as_dict(self): return {'version': self._version, 'config': self._config} @@ -315,7 +343,8 @@ class NetworkStateInterpreter(object): 'name': 'eth0', 'subnets': [ {'type': 'dhcp4'} - ] + ], + 'accept-ra': 'true' } ''' @@ -335,6 +364,9 @@ class NetworkStateInterpreter(object): self.use_ipv6 = True break + accept_ra = command.get('accept-ra', None) + if accept_ra is not None: + accept_ra = util.is_true(accept_ra) iface.update({ 'name': command.get('name'), 'type': command.get('type'), @@ -345,6 +377,7 @@ class NetworkStateInterpreter(object): 'address': None, 'gateway': None, 'subnets': subnets, + 'accept-ra': accept_ra }) self._network_state['interfaces'].update({command.get('name'): iface}) self.dump_network_state() @@ -571,6 +604,7 @@ class NetworkStateInterpreter(object): eno1: match: macaddress: 00:11:22:33:44:55 + driver: hv_netsvc wakeonlan: true dhcp4: true dhcp6: false @@ -587,6 +621,7 @@ class NetworkStateInterpreter(object): driver: ixgbe set-name: lom1 dhcp6: true + accept-ra: true switchports: match: name: enp2* @@ -606,15 +641,18 @@ class NetworkStateInterpreter(object): 'type': 'physical', 'name': cfg.get('set-name', eth), } - mac_address = cfg.get('match', {}).get('macaddress', None) + match = cfg.get('match', {}) + mac_address = match.get('macaddress', None) if not mac_address: LOG.debug('NetworkState Version2: missing "macaddress" info ' 'in config entry: %s: %s', eth, str(cfg)) - phy_cmd.update({'mac_address': mac_address}) - - for key in ['mtu', 'match', 'wakeonlan']: + phy_cmd['mac_address'] = mac_address + driver = match.get('driver', None) + if driver: + phy_cmd['params'] = {'driver': driver} + for key in ['mtu', 'match', 'wakeonlan', 'accept-ra']: if key in cfg: - phy_cmd.update({key: cfg.get(key)}) + phy_cmd[key] = cfg[key] subnets = self._v2_to_v1_ipcfg(cfg) if len(subnets) > 0: @@ -648,6 +686,8 @@ class NetworkStateInterpreter(object): 'vlan_id': cfg.get('id'), 'vlan_link': cfg.get('link'), } + if 'mtu' in cfg: + vlan_cmd['mtu'] = cfg['mtu'] subnets = self._v2_to_v1_ipcfg(cfg) if len(subnets) > 0: vlan_cmd.update({'subnets': subnets}) @@ -682,6 +722,14 @@ class NetworkStateInterpreter(object): item_params = dict((key, value) for (key, value) in item_cfg.items() if key not in NETWORK_V2_KEY_FILTER) + # we accept the fixed spelling, but write the old for compatability + # Xenial does not have an updated netplan which supports the + # correct spelling. LP: #1756701 + params = item_params['parameters'] + grat_value = params.pop('gratuitous-arp', None) + if grat_value: + params['gratuitious-arp'] = grat_value + v1_cmd = { 'type': cmd_type, 'name': item_name, @@ -689,6 +737,8 @@ class NetworkStateInterpreter(object): 'params': dict((v2key_to_v1[k], v) for k, v in item_params.get('parameters', {}).items()) } + if 'mtu' in item_cfg: + v1_cmd['mtu'] = item_cfg['mtu'] subnets = self._v2_to_v1_ipcfg(item_cfg) if len(subnets) > 0: v1_cmd.update({'subnets': subnets}) @@ -705,12 +755,20 @@ class NetworkStateInterpreter(object): def _v2_to_v1_ipcfg(self, cfg): """Common ipconfig extraction from v2 to v1 subnets array.""" + def _add_dhcp_overrides(overrides, subnet): + if 'route-metric' in overrides: + subnet['metric'] = overrides['route-metric'] + subnets = [] - if 'dhcp4' in cfg: - subnets.append({'type': 'dhcp4'}) - if 'dhcp6' in cfg: + if cfg.get('dhcp4'): + subnet = {'type': 'dhcp4'} + _add_dhcp_overrides(cfg.get('dhcp4-overrides', {}), subnet) + subnets.append(subnet) + if cfg.get('dhcp6'): + subnet = {'type': 'dhcp6'} self.use_ipv6 = True - subnets.append({'type': 'dhcp6'}) + _add_dhcp_overrides(cfg.get('dhcp6-overrides', {}), subnet) + subnets.append(subnet) gateway4 = None gateway6 = None @@ -877,9 +935,10 @@ def is_ipv6_addr(address): def subnet_is_ipv6(subnet): """Common helper for checking network_state subnets for ipv6.""" - # 'static6' or 'dhcp6' - if subnet['type'].endswith('6'): - # This is a request for DHCPv6. + # 'static6', 'dhcp6', 'ipv6_dhcpv6-stateful', 'ipv6_dhcpv6-stateless' or + # 'ipv6_slaac' + if subnet['type'].endswith('6') or subnet['type'] in IPV6_DYNAMIC_TYPES: + # This is a request either static6 type or DHCPv6. return True elif subnet['type'] == 'static' and is_ipv6_addr(subnet.get('address')): return True @@ -908,7 +967,7 @@ def ipv4_mask_to_net_prefix(mask): """ if isinstance(mask, int): return mask - if isinstance(mask, six.string_types): + if isinstance(mask, str): try: return int(mask) except ValueError: @@ -935,7 +994,7 @@ def ipv6_mask_to_net_prefix(mask): if isinstance(mask, int): return mask - if isinstance(mask, six.string_types): + if isinstance(mask, str): try: return int(mask) except ValueError: |