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Diffstat (limited to 'src/conf_mode/interface-ethernet.py')
| -rwxr-xr-x | src/conf_mode/interface-ethernet.py | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/src/conf_mode/interface-ethernet.py b/src/conf_mode/interface-ethernet.py new file mode 100755 index 000000000..f82105847 --- /dev/null +++ b/src/conf_mode/interface-ethernet.py @@ -0,0 +1,382 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2019 VyOS maintainers and contributors +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License version 2 or later as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +import os + +from copy import deepcopy +from sys import exit + +from vyos.ifconfig import EthernetIf, VLANIf +from vyos.configdict import list_diff, vlan_to_dict +from vyos.config import Config +from vyos import ConfigError + +default_config_data = { + 'address': [], + 'address_remove': [], + 'description': '', + 'deleted': False, + 'dhcp_client_id': '', + 'dhcp_hostname': '', + 'dhcpv6_prm_only': False, + 'dhcpv6_temporary': False, + 'disable': False, + 'disable_link_detect': 1, + 'duplex': 'auto', + 'flow_control': 'on', + 'hw_id': '', + 'ip_arp_cache_tmo': 30, + 'ip_proxy_arp': 0, + 'ip_proxy_arp_pvlan': 0, + 'intf': '', + 'mac': '', + 'mtu': 1500, + 'offload_gro': 'off', + 'offload_gso': 'off', + 'offload_sg': 'off', + 'offload_tso': 'off', + 'offload_ufo': 'off', + 'speed': 'auto', + 'vif_s': [], + 'vif_s_remove': [], + 'vif': [], + 'vif_remove': [] +} + + +def apply_vlan_config(vlan, config): + """ + Generic function to apply a VLAN configuration from a dictionary + to a VLAN interface + """ + + if type(vlan) != type(VLANIf("lo")): + raise TypeError() + + # update interface description used e.g. within SNMP + vlan.ifalias = config['description'] + # ignore link state changes + vlan.link_detect = config['disable_link_detect'] + # Maximum Transmission Unit (MTU) + vlan.mtu = config['mtu'] + # Change VLAN interface MAC address + if config['mac']: + vlan.mac = config['mac'] + + # enable/disable VLAN interface + if config['disable']: + vlan.state = 'down' + else: + vlan.state = 'up' + + # Configure interface address(es) + # - not longer required addresses get removed first + # - newly addresses will be added second + for addr in config['address_remove']: + vlan.del_addr(addr) + for addr in config['address']: + vlan.add_addr(addr) + + +def get_config(): + eth = deepcopy(default_config_data) + conf = Config() + + # determine tagNode instance + try: + eth['intf'] = os.environ['VYOS_TAGNODE_VALUE'] + except KeyError as E: + print("Interface not specified") + + # check if ethernet interface has been removed + cfg_base = 'interfaces ethernet ' + eth['intf'] + if not conf.exists(cfg_base): + eth['deleted'] = True + # we can not bail out early as ethernet interface can not be removed + # Kernel will complain with: RTNETLINK answers: Operation not supported. + # Thus we need to remove individual settings + return eth + + # set new configuration level + conf.set_level(cfg_base) + + # retrieve configured interface addresses + if conf.exists('address'): + eth['address'] = conf.return_values('address') + + # get interface addresses (currently effective) - to determine which + # address is no longer valid and needs to be removed + eff_addr = conf.return_effective_values('address') + eth['address_remove'] = list_diff(eff_addr, eth['address']) + + # retrieve interface description + if conf.exists('description'): + eth['description'] = conf.return_value('description') + + # get DHCP client identifier + if conf.exists('dhcp-options client-id'): + eth['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'): + eth['dhcp_hostname'] = conf.return_value('dhcp-options host-name') + + # DHCPv6 only acquire config parameters, no address + if conf.exists('dhcpv6-options parameters-only'): + eth['dhcpv6_prm_only'] = conf.return_value('dhcpv6-options parameters-only') + + # DHCPv6 temporary IPv6 address + if conf.exists('dhcpv6-options temporary'): + eth['dhcpv6_temporary'] = conf.return_value('dhcpv6-options temporary') + + # ignore link state changes + if conf.exists('disable-link-detect'): + eth['disable_link_detect'] = 2 + + # disable ethernet flow control (pause frames) + if conf.exists('disable-flow-control'): + eth['flow_control'] = 'off' + + # retrieve real hardware address + if conf.exists('hw-id'): + eth['hw_id'] = conf.return_value('hw-id') + + # disable interface + if conf.exists('disable'): + eth['disable'] = True + + # interface duplex + if conf.exists('duplex'): + eth['duplex'] = conf.return_value('duplex') + + # ARP cache entry timeout in seconds + if conf.exists('ip arp-cache-timeout'): + eth['ip_arp_cache_tmo'] = int(conf.return_value('ip arp-cache-timeout')) + + # Enable proxy-arp on this interface + if conf.exists('ip enable-proxy-arp'): + eth['ip_proxy_arp'] = 1 + + # Enable private VLAN proxy ARP on this interface + if conf.exists('ip proxy-arp-pvlan'): + eth['ip_proxy_arp_pvlan'] = 1 + + # Media Access Control (MAC) address + if conf.exists('mac'): + eth['mac'] = conf.return_value('mac') + + # Maximum Transmission Unit (MTU) + if conf.exists('mtu'): + eth['mtu'] = int(conf.return_value('mtu')) + + # GRO (generic receive offload) + if conf.exists('offload-options generic-receive'): + eth['offload_gro'] = conf.return_value('offload-options generic-receive') + + # GSO (generic segmentation offload) + if conf.exists('offload-options generic-segmentation'): + eth['offload_gso'] = conf.return_value('offload-options generic-segmentation') + + # scatter-gather option + if conf.exists('offload-options scatter-gather'): + eth['offload_sg'] = conf.return_value('offload-options scatter-gather') + + # TSO (TCP segmentation offloading) + if conf.exists('offload-options tcp-segmentation'): + eth['offload_tso'] = conf.return_value('offload-options tcp-segmentation') + + # UDP fragmentation offloading + if conf.exists('offload-options udp-fragmentation'): + eth['offload_ufo'] = conf.return_value('offload-options udp-fragmentation') + + # interface speed + if conf.exists('speed'): + eth['speed'] = conf.return_value('speed') + + # re-set configuration level and retrieve vif-s interfaces + conf.set_level(cfg_base) + # get vif-s interfaces (currently effective) - to determine which vif-s + # interface is no longer present and needs to be removed + eff_intf = conf.list_effective_nodes('vif-s') + act_intf = conf.list_nodes('vif-s') + eth['vif_s_remove'] = list_diff(eff_intf, act_intf) + + if conf.exists('vif-s'): + for vif_s in conf.list_nodes('vif-s'): + # set config level to vif-s interface + conf.set_level(cfg_base + ' vif-s ' + vif_s) + eth['vif_s'].append(vlan_to_dict(conf)) + + # re-set configuration level and retrieve vif-s interfaces + conf.set_level(cfg_base) + # Determine vif interfaces (currently effective) - to determine which + # vif interface is no longer present and needs to be removed + eff_intf = conf.list_effective_nodes('vif') + act_intf = conf.list_nodes('vif') + eth['vif_remove'] = list_diff(eff_intf, act_intf) + + if conf.exists('vif'): + for vif in conf.list_nodes('vif'): + # set config level to vif interface + conf.set_level(cfg_base + ' vif ' + vif) + eth['vif'].append(vlan_to_dict(conf)) + + return eth + + +def verify(eth): + if eth['deleted']: + return None + + if eth['speed'] == 'auto': + if eth['duplex'] != 'auto': + raise ConfigError('If speed is hardcoded, duplex must be hardcoded, too') + + if eth['duplex'] == 'auto': + if eth['speed'] != 'auto': + raise ConfigError('If duplex is hardcoded, speed must be hardcoded, too') + + conf = Config() + # some options can not be changed when interface is enslaved to a bond + for bond in conf.list_nodes('interfaces bonding'): + if conf.exists('interfaces bonding ' + bond + ' member interface'): + bond_member = conf.return_values('interfaces bonding ' + bond + ' member interface') + if eth['name'] in bond_member: + if eth['address']: + raise ConfigError('Can not assign address to interface {} which is a member of {}').format(eth['intf'], bond) + + + return None + +def generate(eth): + return None + +def apply(eth): + e = EthernetIf(eth['intf']) + if eth['deleted']: + # delete interface + e.remove() + else: + # update interface description used e.g. within SNMP + e.ifalias = eth['description'] + + # + # missing DHCP/DHCPv6 options go here + # + + # ignore link state changes + e.link_detect = eth['disable_link_detect'] + # disable ethernet flow control (pause frames) + e.set_flow_control(eth['flow_control']) + # configure ARP cache timeout in milliseconds + e.arp_cache_tmo = eth['ip_arp_cache_tmo'] + # Enable proxy-arp on this interface + e.proxy_arp = eth['ip_proxy_arp'] + # Enable private VLAN proxy ARP on this interface + e.proxy_arp_pvlan = eth['ip_proxy_arp_pvlan'] + + # Change interface MAC address - re-set to real hardware address (hw-id) + # if custom mac is removed + if eth['mac']: + e.mac = eth['mac'] + else: + e.mac = eth['hw_id'] + + # Maximum Transmission Unit (MTU) + e.mtu = eth['mtu'] + + # GRO (generic receive offload) + e.set_gro(eth['offload_gro']) + + # GSO (generic segmentation offload) + e.set_gso(eth['offload_gso']) + + # scatter-gather option + e.set_sg(eth['offload_sg']) + + # TSO (TCP segmentation offloading) + e.set_tso(eth['offload_tso']) + + # UDP fragmentation offloading + e.set_ufo(eth['offload_ufo']) + + # Set physical interface speed and duplex + e.set_speed_duplex(eth['speed'], eth['duplex']) + + # Configure interface address(es) + # - not longer required addresses get removed first + # - newly addresses will be added second + for addr in eth['address_remove']: + e.del_addr(addr) + for addr in eth['address']: + e.add_addr(addr) + + # Enable/Disable interface + if eth['disable']: + e.state = 'down' + else: + e.state = 'up' + + # remove no longer required service VLAN interfaces (vif-s) + for vif_s in eth['vif_s_remove']: + e.del_vlan(vif_s) + + # create service VLAN interfaces (vif-s) + for vif_s in eth['vif_s']: + s_vlan = e.add_vlan(vif_s['id'], ethertype=vif_s['ethertype']) + apply_vlan_config(s_vlan, vif_s) + + # remove no longer required client VLAN interfaces (vif-c) + # on lower service VLAN interface + for vif_c in vif_s['vif_c_remove']: + s_vlan.del_vlan(vif_c) + + # create client VLAN interfaces (vif-c) + # on lower service VLAN interface + for vif_c in vif_s['vif_c']: + c_vlan = s_vlan.add_vlan(vif_c['id']) + apply_vlan_config(c_vlan, vif_c) + + # remove no longer required VLAN interfaces (vif) + for vif in eth['vif_remove']: + e.del_vlan(vif) + + # create VLAN interfaces (vif) + for vif in eth['vif']: + # QoS priority mapping can only be set during interface creation + # so we delete the interface first if required. + if vif['egress_qos_changed'] or vif['ingress_qos_changed']: + try: + # on system bootup the above condition is true but the interface + # does not exists, which throws an exception, but that's legal + e.del_vlan(vif['id']) + except: + pass + + vlan = e.add_vlan(vif['id'], ingress_qos=vif['ingress_qos'], egress_qos=vif['egress_qos']) + apply_vlan_config(vlan, vif) + + return None + +if __name__ == '__main__': + try: + c = get_config() + verify(c) + generate(c) + apply(c) + except ConfigError as e: + print(e) + exit(1) |