diff options
Diffstat (limited to 'src/conf_mode/interfaces-bridge.py')
| -rwxr-xr-x | src/conf_mode/interfaces-bridge.py | 416 |
1 files changed, 81 insertions, 335 deletions
diff --git a/src/conf_mode/interfaces-bridge.py b/src/conf_mode/interfaces-bridge.py index 1e4fa5816..47c8c05f9 100755 --- a/src/conf_mode/interfaces-bridge.py +++ b/src/conf_mode/interfaces-bridge.py @@ -16,251 +16,105 @@ import os -from copy import deepcopy from sys import exit from netifaces import interfaces -from vyos.ifconfig import BridgeIf, Section -from vyos.ifconfig.stp import STP -from vyos.configdict import list_diff, interface_default_data -from vyos.validate import is_member, has_address_configured from vyos.config import Config -from vyos.util import cmd, get_bridge_member_config +from vyos.configdict import get_interface_dict +from vyos.configdict import node_changed +from vyos.configverify import verify_dhcpv6 +from vyos.configverify import verify_vrf +from vyos.ifconfig import BridgeIf +from vyos.validate import is_member, has_address_configured +from vyos.xml import defaults + +from vyos.util import cmd from vyos import ConfigError from vyos import airbag airbag.enable() -default_config_data = { - **interface_default_data, - 'aging': 300, - 'arp_cache_tmo': 30, - 'deleted': False, - 'forwarding_delay': 14, - 'hello_time': 2, - 'igmp_querier': 0, - 'intf': '', - 'max_age': 20, - 'member': [], - 'member_remove': [], - 'priority': 32768, - 'stp': 0 -} - -def get_config(): - bridge = deepcopy(default_config_data) - conf = Config() - - # determine tagNode instance - if 'VYOS_TAGNODE_VALUE' not in os.environ: - raise ConfigError('Interface (VYOS_TAGNODE_VALUE) not specified') - - bridge['intf'] = os.environ['VYOS_TAGNODE_VALUE'] - - # Check if bridge has been removed - if not conf.exists('interfaces bridge ' + bridge['intf']): - bridge['deleted'] = True - return bridge - - # set new configuration level - conf.set_level('interfaces bridge ' + bridge['intf']) - - # retrieve configured interface addresses - if conf.exists('address'): - bridge['address'] = conf.return_values('address') - - # Determine interface addresses (currently effective) - to determine which - # address is no longer valid and needs to be removed - eff_addr = conf.return_effective_values('address') - bridge['address_remove'] = list_diff(eff_addr, bridge['address']) - - # retrieve aging - how long addresses are retained - if conf.exists('aging'): - bridge['aging'] = int(conf.return_value('aging')) - - # retrieve interface description - if conf.exists('description'): - bridge['description'] = conf.return_value('description') - - # get DHCP client identifier - if conf.exists('dhcp-options client-id'): - bridge['dhcp_client_id'] = conf.return_value('dhcp-options client-id') - - # DHCP client host name (overrides the system host name) - if conf.exists('dhcp-options host-name'): - bridge['dhcp_hostname'] = conf.return_value('dhcp-options host-name') - - # DHCP client vendor identifier - if conf.exists('dhcp-options vendor-class-id'): - bridge['dhcp_vendor_class_id'] = conf.return_value('dhcp-options vendor-class-id') - - # DHCPv6 only acquire config parameters, no address - if conf.exists('dhcpv6-options parameters-only'): - bridge['dhcpv6_prm_only'] = True - - # DHCPv6 temporary IPv6 address - if conf.exists('dhcpv6-options temporary'): - bridge['dhcpv6_temporary'] = True - - # Disable this bridge interface - if conf.exists('disable'): - bridge['disable'] = True - - # Ignore link state changes - if conf.exists('disable-link-detect'): - bridge['disable_link_detect'] = 2 - - # Forwarding delay - if conf.exists('forwarding-delay'): - bridge['forwarding_delay'] = int(conf.return_value('forwarding-delay')) - - # Hello packet advertisment interval - if conf.exists('hello-time'): - bridge['hello_time'] = int(conf.return_value('hello-time')) - - # Enable Internet Group Management Protocol (IGMP) querier - if conf.exists('igmp querier'): - bridge['igmp_querier'] = 1 - - # ARP cache entry timeout in seconds - if conf.exists('ip arp-cache-timeout'): - bridge['arp_cache_tmo'] = int(conf.return_value('ip arp-cache-timeout')) - - # ARP filter configuration - if conf.exists('ip disable-arp-filter'): - bridge['ip_disable_arp_filter'] = 0 - - # ARP enable accept - if conf.exists('ip enable-arp-accept'): - bridge['ip_enable_arp_accept'] = 1 - - # ARP enable announce - if conf.exists('ip enable-arp-announce'): - bridge['ip_enable_arp_announce'] = 1 - - # ARP enable ignore - if conf.exists('ip enable-arp-ignore'): - bridge['ip_enable_arp_ignore'] = 1 - - # Enable acquisition of IPv6 address using stateless autoconfig (SLAAC) - if conf.exists('ipv6 address autoconf'): - bridge['ipv6_autoconf'] = 1 - - # Get prefixes for IPv6 addressing based on MAC address (EUI-64) - if conf.exists('ipv6 address eui64'): - bridge['ipv6_eui64_prefix'] = conf.return_values('ipv6 address eui64') - - # Determine currently effective EUI64 addresses - to determine which - # address is no longer valid and needs to be removed - eff_addr = conf.return_effective_values('ipv6 address eui64') - bridge['ipv6_eui64_prefix_remove'] = list_diff(eff_addr, bridge['ipv6_eui64_prefix']) - - # Remove the default link-local address if set. - if conf.exists('ipv6 address no-default-link-local'): - bridge['ipv6_eui64_prefix_remove'].append('fe80::/64') +def get_config(config=None): + """ + Retrive CLI config as dictionary. Dictionary can never be empty, as at least the + interface name will be added or a deleted flag + """ + if config: + conf = config else: - # add the link-local by default to make IPv6 work - bridge['ipv6_eui64_prefix'].append('fe80::/64') - - # Disable IPv6 forwarding on this interface - if conf.exists('ipv6 disable-forwarding'): - bridge['ipv6_forwarding'] = 0 - - # IPv6 Duplicate Address Detection (DAD) tries - if conf.exists('ipv6 dup-addr-detect-transmits'): - bridge['ipv6_dup_addr_detect'] = int(conf.return_value('ipv6 dup-addr-detect-transmits')) - - # Media Access Control (MAC) address - if conf.exists('mac'): - bridge['mac'] = conf.return_value('mac') - - # Find out if MAC has changed - if so, we need to delete all IPv6 EUI64 addresses - # before re-adding them - if ( bridge['mac'] and bridge['intf'] in Section.interfaces(section='bridge') - and bridge['mac'] != BridgeIf(bridge['intf'], create=False).get_mac() ): - bridge['ipv6_eui64_prefix_remove'] += bridge['ipv6_eui64_prefix'] - - # to make IPv6 SLAAC and DHCPv6 work with forwarding=1, - # accept_ra must be 2 - if bridge['ipv6_autoconf'] or 'dhcpv6' in bridge['address']: - bridge['ipv6_accept_ra'] = 2 - - # Interval at which neighbor bridges are removed - if conf.exists('max-age'): - bridge['max_age'] = int(conf.return_value('max-age')) - - # Determine bridge member interface (currently configured) - for intf in conf.list_nodes('member interface'): - # defaults are stored in util.py (they can't be here as all interface - # scripts use the function) - memberconf = get_bridge_member_config(conf, bridge['intf'], intf) - if memberconf: - memberconf['name'] = intf - bridge['member'].append(memberconf) - - # Determine bridge member interface (currently effective) - to determine which - # interfaces is no longer assigend to the bridge and thus can be removed - eff_intf = conf.list_effective_nodes('member interface') - act_intf = conf.list_nodes('member interface') - bridge['member_remove'] = list_diff(eff_intf, act_intf) - - # Priority for this bridge - if conf.exists('priority'): - bridge['priority'] = int(conf.return_value('priority')) - - # Enable spanning tree protocol - if conf.exists('stp'): - bridge['stp'] = 1 - - # retrieve VRF instance - if conf.exists('vrf'): - bridge['vrf'] = conf.return_value('vrf') + conf = Config() + base = ['interfaces', 'bridge'] + bridge = get_interface_dict(conf, base) + + # determine which members have been removed + tmp = node_changed(conf, ['member', 'interface']) + if tmp: + if 'member' in bridge: + bridge['member'].update({'interface_remove': tmp }) + else: + bridge.update({'member': {'interface_remove': tmp }}) + + if 'member' in bridge and 'interface' in bridge['member']: + # XXX TT2665 we need a copy of the dict keys for iteration, else we will get: + # RuntimeError: dictionary changed size during iteration + for interface in list(bridge['member']['interface']): + for key in ['cost', 'priority']: + if interface == key: + del bridge['member']['interface'][key] + continue + + # the default dictionary is not properly paged into the dict (see T2665) + # thus we will ammend it ourself + default_member_values = defaults(base + ['member', 'interface']) + for interface, interface_config in bridge['member']['interface'].items(): + interface_config.update(default_member_values) + + # Check if we are a member of another bridge device + tmp = is_member(conf, interface, 'bridge') + if tmp and tmp != bridge['ifname']: + interface_config.update({'is_bridge_member' : tmp}) + + # Check if we are a member of a bond device + tmp = is_member(conf, interface, 'bonding') + if tmp: + interface_config.update({'is_bond_member' : tmp}) + + # Bridge members must not have an assigned address + tmp = has_address_configured(conf, interface) + if tmp: + interface_config.update({'has_address' : ''}) return bridge def verify(bridge): - if bridge['dhcpv6_prm_only'] and bridge['dhcpv6_temporary']: - raise ConfigError('DHCPv6 temporary and parameters-only options are mutually exclusive!') + if 'deleted' in bridge: + return None - vrf_name = bridge['vrf'] - if vrf_name and vrf_name not in interfaces(): - raise ConfigError(f'VRF "{vrf_name}" does not exist') + verify_dhcpv6(bridge) + verify_vrf(bridge) - conf = Config() - for intf in bridge['member']: - # the interface must exist prior adding it to a bridge - if intf['name'] not in interfaces(): - raise ConfigError(( - f'Cannot add nonexistent interface "{intf["name"]}" ' - f'to bridge "{bridge["intf"]}"')) + if 'member' in bridge: + member = bridge.get('member') + bridge_name = bridge['ifname'] + for interface, interface_config in member.get('interface', {}).items(): + error_msg = f'Can not add interface "{interface}" to bridge "{bridge_name}", ' - if intf['name'] == 'lo': - raise ConfigError('Loopback interface "lo" can not be added to a bridge') + if interface == 'lo': + raise ConfigError('Loopback interface "lo" can not be added to a bridge') - # bridge members aren't allowed to be members of another bridge - for br in conf.list_nodes('interfaces bridge'): - # it makes no sense to verify ourself in this case - if br == bridge['intf']: - continue + if interface not in interfaces(): + raise ConfigError(error_msg + 'it does not exist!') - tmp = conf.list_nodes(f'interfaces bridge {br} member interface') - if intf['name'] in tmp: - raise ConfigError(( - f'Cannot add interface "{intf["name"]}" to bridge ' - f'"{bridge["intf"]}", it is already a member of bridge "{br}"!')) + if 'is_bridge_member' in interface_config: + tmp = interface_config['is_bridge_member'] + raise ConfigError(error_msg + f'it is already a member of bridge "{tmp}"!') - # bridge members are not allowed to be bond members - tmp = is_member(conf, intf['name'], 'bonding') - if tmp: - raise ConfigError(( - f'Cannot add interface "{intf["name"]}" to bridge ' - f'"{bridge["intf"]}", it is already a member of bond "{tmp}"!')) + if 'is_bond_member' in interface_config: + tmp = interface_config['is_bond_member'] + raise ConfigError(error_msg + f'it is already a member of bond "{tmp}"!') - # bridge members must not have an assigned address - if has_address_configured(conf, intf['name']): - raise ConfigError(( - f'Cannot add interface "{intf["name"]}" to bridge ' - f'"{bridge["intf"]}", it has an address assigned!')) + if 'has_address' in interface_config: + raise ConfigError(error_msg + 'it has an address assigned!') return None @@ -268,120 +122,12 @@ def generate(bridge): return None def apply(bridge): - br = BridgeIf(bridge['intf']) - - if bridge['deleted']: + br = BridgeIf(bridge['ifname']) + if 'deleted' in bridge: # delete interface br.remove() else: - # enable interface - br.set_admin_state('up') - # set ageing time - br.set_ageing_time(bridge['aging']) - # set bridge forward delay - br.set_forward_delay(bridge['forwarding_delay']) - # set hello time - br.set_hello_time(bridge['hello_time']) - # configure ARP filter configuration - br.set_arp_filter(bridge['ip_disable_arp_filter']) - # configure ARP accept - br.set_arp_accept(bridge['ip_enable_arp_accept']) - # configure ARP announce - br.set_arp_announce(bridge['ip_enable_arp_announce']) - # configure ARP ignore - br.set_arp_ignore(bridge['ip_enable_arp_ignore']) - # IPv6 accept RA - br.set_ipv6_accept_ra(bridge['ipv6_accept_ra']) - # IPv6 address autoconfiguration - br.set_ipv6_autoconf(bridge['ipv6_autoconf']) - # IPv6 forwarding - br.set_ipv6_forwarding(bridge['ipv6_forwarding']) - # IPv6 Duplicate Address Detection (DAD) tries - br.set_ipv6_dad_messages(bridge['ipv6_dup_addr_detect']) - # set max message age - br.set_max_age(bridge['max_age']) - # set bridge priority - br.set_priority(bridge['priority']) - # turn stp on/off - br.set_stp(bridge['stp']) - # enable or disable IGMP querier - br.set_multicast_querier(bridge['igmp_querier']) - # update interface description used e.g. within SNMP - br.set_alias(bridge['description']) - - if bridge['dhcp_client_id']: - br.dhcp.v4.options['client_id'] = bridge['dhcp_client_id'] - - if bridge['dhcp_hostname']: - br.dhcp.v4.options['hostname'] = bridge['dhcp_hostname'] - - if bridge['dhcp_vendor_class_id']: - br.dhcp.v4.options['vendor_class_id'] = bridge['dhcp_vendor_class_id'] - - if bridge['dhcpv6_prm_only']: - br.dhcp.v6.options['dhcpv6_prm_only'] = True - - if bridge['dhcpv6_temporary']: - br.dhcp.v6.options['dhcpv6_temporary'] = True - - if bridge['dhcpv6_pd_length']: - br.dhcp.v6.options['dhcpv6_pd_length'] = br['dhcpv6_pd_length'] - - if bridge['dhcpv6_pd_interfaces']: - br.dhcp.v6.options['dhcpv6_pd_interfaces'] = br['dhcpv6_pd_interfaces'] - - # assign/remove VRF - br.set_vrf(bridge['vrf']) - - # Delete old IPv6 EUI64 addresses before changing MAC - # (adding members to a fresh bridge changes its MAC too) - for addr in bridge['ipv6_eui64_prefix_remove']: - br.del_ipv6_eui64_address(addr) - - # remove interface from bridge - for intf in bridge['member_remove']: - br.del_port(intf) - - # add interfaces to bridge - for member in bridge['member']: - # if we've come here we already verified the interface doesn't - # have addresses configured so just flush any remaining ones - cmd(f'ip addr flush dev "{member["name"]}"') - br.add_port(member['name']) - - # Change interface MAC address - if bridge['mac']: - br.set_mac(bridge['mac']) - - # Add IPv6 EUI-based addresses (must be done after adding the - # 1st bridge member or setting its MAC) - for addr in bridge['ipv6_eui64_prefix']: - br.add_ipv6_eui64_address(addr) - - # up/down interface - if bridge['disable']: - br.set_admin_state('down') - - # Configure interface address(es) - # - not longer required addresses get removed first - # - newly addresses will be added second - for addr in bridge['address_remove']: - br.del_addr(addr) - for addr in bridge['address']: - br.add_addr(addr) - - STPBridgeIf = STP.enable(BridgeIf) - # configure additional bridge member options - for member in bridge['member']: - i = STPBridgeIf(member['name']) - # configure ARP cache timeout - i.set_arp_cache_tmo(member['arp_cache_tmo']) - # ignore link state changes - i.set_link_detect(member['disable_link_detect']) - # set bridge port path cost - i.set_path_cost(member['cost']) - # set bridge port path priority - i.set_path_priority(member['priority']) + br.update(bridge) return None |