From c9c37a56cdee45dfa7d4b2e677e88a19afde8ac7 Mon Sep 17 00:00:00 2001 From: Nataliia Solomko Date: Tue, 27 Aug 2024 13:50:16 +0300 Subject: openfabric: T6652: Add support for OpenFabric protocol OpenFabric is a routing protocol providing link-state routing with efficient flooding for topologies like spine-leaf networks. FRR implements OpenFabric in a daemon called fabricd --- src/conf_mode/protocols_openfabric.py | 145 ++++++++++++++++++++++++++++++++++ 1 file changed, 145 insertions(+) create mode 100644 src/conf_mode/protocols_openfabric.py (limited to 'src/conf_mode') diff --git a/src/conf_mode/protocols_openfabric.py b/src/conf_mode/protocols_openfabric.py new file mode 100644 index 000000000..8e8c50c06 --- /dev/null +++ b/src/conf_mode/protocols_openfabric.py @@ -0,0 +1,145 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2024 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 . + +from sys import exit + +from vyos.base import Warning +from vyos.config import Config +from vyos.configdict import node_changed +from vyos.configverify import verify_interface_exists +from vyos.template import render_to_string +from vyos import ConfigError +from vyos import frr +from vyos import airbag + +airbag.enable() + +def get_config(config=None): + if config: + conf = config + else: + conf = Config() + + base_path = ['protocols', 'openfabric'] + + openfabric = conf.get_config_dict(base_path, key_mangling=('-', '_'), + get_first_key=True, + no_tag_node_value_mangle=True) + + # Remove per domain MPLS configuration - get a list of all changed Openfabric domains + # (removed and added) so that they will be properly rendered for the FRR config. + openfabric['domains_all'] = list(conf.list_nodes(' '.join(base_path) + f' domain') + + node_changed(conf, base_path + ['domain'])) + + # Get a list of all interfaces + openfabric['interfaces_all'] = [] + for domain in openfabric['domains_all']: + interfaces_modified = list(node_changed(conf, base_path + ['domain', domain, 'interface']) + + conf.list_nodes(' '.join(base_path) + f' domain {domain} interface')) + openfabric['interfaces_all'].extend(interfaces_modified) + + if not conf.exists(base_path): + openfabric.update({'deleted': ''}) + + return openfabric + +def verify(openfabric): + # bail out early - looks like removal from running config + if not openfabric or 'deleted' in openfabric: + return None + + if 'net' not in openfabric: + raise ConfigError('Network entity is mandatory!') + + # last byte in OpenFabric area address must be 0 + tmp = openfabric['net'].split('.') + if int(tmp[-1]) != 0: + raise ConfigError('Last byte of OpenFabric network entity title must always be 0!') + + if 'domain' not in openfabric: + raise ConfigError('OpenFabric domain name is mandatory!') + + interfaces_used = [] + + for domain, domain_config in openfabric['domain'].items(): + # If interface not set + if 'interface' not in domain_config: + raise ConfigError(f'Interface used for routing updates in OpenFabric "{domain}" is mandatory!') + + for iface, iface_config in domain_config['interface'].items(): + verify_interface_exists(openfabric, iface) + + # interface can be activated only on one OpenFabric instance + if iface in interfaces_used: + raise ConfigError(f'Interface {iface} is already used in different OpenFabric instance!') + + if 'address_family' not in iface_config or len(iface_config['address_family']) < 1: + raise ConfigError(f'Need to specify address family for the interface "{iface}"!') + + # If md5 and plaintext-password set at the same time + if 'password' in iface_config: + if {'md5', 'plaintext_password'} <= set(iface_config['password']): + raise ConfigError(f'Can use either md5 or plaintext-password for password for the interface!') + + if iface == 'lo' and 'passive' not in iface_config: + Warning('For loopback interface passive mode is implied!') + + interfaces_used.append(iface) + + # If md5 and plaintext-password set at the same time + password = 'domain_password' + if password in domain_config: + if {'md5', 'plaintext_password'} <= set(domain_config[password]): + raise ConfigError(f'Can use either md5 or plaintext-password for domain-password!') + + return None + +def generate(openfabric): + if not openfabric or 'deleted' in openfabric: + return None + + openfabric['frr_fabricd_config'] = render_to_string('frr/fabricd.frr.j2', openfabric) + return None + +def apply(openfabric): + openfabric_daemon = 'fabricd' + + # Save original configuration prior to starting any commit actions + frr_cfg = frr.FRRConfig() + + frr_cfg.load_configuration(openfabric_daemon) + for domain in openfabric['domains_all']: + frr_cfg.modify_section(f'^router openfabric {domain}', stop_pattern='^exit', remove_stop_mark=True) + + for interface in openfabric['interfaces_all']: + frr_cfg.modify_section(f'^interface {interface}', stop_pattern='^exit', remove_stop_mark=True) + + if 'frr_fabricd_config' in openfabric: + frr_cfg.add_before(frr.default_add_before, openfabric['frr_fabricd_config']) + + frr_cfg.commit_configuration(openfabric_daemon) + + return None + +if __name__ == '__main__': + try: + c = get_config() + verify(c) + generate(c) + apply(c) + except ConfigError as e: + print(e) + exit(1) -- cgit v1.2.3