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#!/usr/bin/env python3
#
# Copyright (C) VyOS Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import os
from vyos.config import Config
from vyos.configdict import leaf_node_changed
from vyos.configdep import set_dependents, call_dependents
from vyos import ConfigError
from vyos.vpp.interface import BondInterface
from vyos.vpp.config_deps import deps_xconnect_dict
from vyos.vpp.config_verify import (
verify_vpp_remove_xconnect_interface,
verify_vpp_remove_kernel_interface,
verify_vpp_change_kernel_interface,
verify_vpp_exists_kernel_interface,
)
from vyos.vpp.utils import cli_ifaces_list, cli_ifaces_lcp_kernel_list
def _get_bond_mode(mode_name: str) -> int:
"""Convert VyOS CLI name bonding mode to VPP compatible"""
mode_mapping = {
'round-robin': 1,
'active-backup': 2,
'xor-hash': 3,
'broadcast': 4,
'802.3ad': 5,
}
return mode_mapping.get(mode_name, 5)
def _get_bond_lb(lb_name: str) -> int:
"""Convert VyOS CLI name bonding load balance to VPP compatible"""
lb_mapping = {
'layer2': 0,
'layer2+3': 2,
'layer3+4': 1,
}
return lb_mapping.get(lb_name, 5)
def get_config(config=None) -> dict:
"""Get Bonding interface configuration
Args:
config (vyos.config.Config, optional): The VyOS configuration dictionary
Returns:
dict: Bonding interface configuration
"""
if config:
conf = config
else:
conf = Config()
base = ['vpp', 'interfaces', 'bonding']
base_kernel_interfaces = ['vpp', 'kernel-interfaces']
ifname = os.environ['VYOS_TAGNODE_VALUE']
# Get config_dict with default values
config = conf.get_config_dict(
base + [ifname],
key_mangling=('-', '_'),
get_first_key=True,
no_tag_node_value_mangle=True,
with_defaults=True,
with_recursive_defaults=True,
)
if not conf.exists(['vpp']):
config['remove_vpp'] = True
return config
# Get effective config as we need full dicitonary per interface delete
effective_config = conf.get_config_dict(
base + [ifname],
key_mangling=('-', '_'),
effective=True,
get_first_key=True,
no_tag_node_value_mangle=True,
)
if effective_config:
config.update({'effective': effective_config})
if not conf.exists(base + [ifname]):
config['remove'] = True
if effective_config:
config.update({'effective': effective_config})
config['vpp_ifaces'] = cli_ifaces_list(conf, 'candidate')
# Get global 'vpp kernel-interfaces' for verify
config['vpp_kernel_interfaces'] = conf.get_config_dict(
base_kernel_interfaces,
key_mangling=('-', '_'),
get_first_key=True,
no_tag_node_value_mangle=True,
)
# list of all kernel interfaces `vpp interface xxx kernel-interface xxx`
config['candidate_kernel_interfaces'] = cli_ifaces_lcp_kernel_list(conf)
# convert values to VPP compatible
if 'mode' in config:
config['mode'] = _get_bond_mode(config['mode'])
if 'hash_policy' in config:
config['hash_policy'] = _get_bond_lb(config['hash_policy'])
tmp = leaf_node_changed(conf, base + [ifname, 'kernel-interface'])
if tmp:
config['kernel_interface_removed'] = tmp
# Dependency
config['xconn_members'] = deps_xconnect_dict(conf)
if ifname in config['xconn_members']:
for xconn_iface in config['xconn_members'][ifname]:
set_dependents('vpp_interfaces_xconnect', conf, xconn_iface)
if conf.exists(base + [ifname, 'kernel-interface']):
if effective_config.get('kernel_interface') or __name__ != '__main__':
iface = config.get('kernel_interface')
if conf.exists(['vpp', 'kernel-interfaces', iface]):
set_dependents('vpp_kernel_interface', conf, iface)
# NAT dependency
if conf.exists(['vpp', 'nat44']):
set_dependents('vpp_nat', conf)
if conf.exists(['vpp', 'nat', 'cgnat']):
set_dependents('vpp_nat_cgnat', conf)
# ACL dependency
if conf.exists(['vpp', 'acl']):
set_dependents('vpp_acl', conf)
# IPFIX dependency
if conf.exists(['vpp', 'ipfix']):
set_dependents('vpp_ipfix', conf)
config['ifname'] = ifname
return config
def verify(config):
if 'remove_vpp' in config:
return None
verify_vpp_remove_kernel_interface(config)
verify_vpp_remove_xconnect_interface(config)
# Member must belong to VPP
for iface in config.get('member', {}).get('interface', []):
if iface not in config['vpp_ifaces']:
raise ConfigError(f'{iface} must be a VPP interface for bonding')
if 'remove' in config:
return None
verify_vpp_change_kernel_interface(config)
verify_vpp_exists_kernel_interface(config)
def generate(config):
pass
def apply(config):
if 'remove_vpp' in config:
return None
ifname = config.get('ifname')
# remove old members
if 'effective' in config:
members = config['effective'].get('member', {}).get('interface', [])
kernel_interface = config['effective'].get('kernel_interface', '')
i = BondInterface(ifname, kernel_interface=kernel_interface)
for member in members:
i.detach_member(interface=member)
if 'kernel_interface' in config['effective'] and i.lcp_pair_exists():
i.kernel_delete()
# Delete bonding interface
i.delete()
if 'remove' in config:
return None
# Create a new one
mode = config.get('mode')
lb = config.get('hash_policy')
members = config.get('member', {}).get('interface', [])
mac = config.get('mac', '')
kernel_interface = config.get('kernel_interface', '')
state = 'up' if 'disable' not in config else 'down'
i = BondInterface(ifname, mode, lb, mac, kernel_interface, state)
i.add()
# Add members to bond
if members:
for member in members:
i.add_member(interface=member)
call_dependents()
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)
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