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#!/usr/bin/env python3
#
# Copyright (C) 2022 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/>.
from sys import argv,exit
from vyos.base import Warning
from vyos.configtree import ConfigTree
from vyos.util import read_file
def bandwidth_percent_to_val(interface, percent) -> int:
speed = read_file(f'/sys/class/net/{interface}/speed')
if not speed.isnumeric():
Warning('Interface speed cannot be determined (assuming 10 Mbit/s)')
speed = 10
speed = int(speed) *1000000 # convert to MBit/s
return speed * int(percent) // 100 # integer division
if (len(argv) < 1):
print("Must specify file name!")
exit(1)
file_name = argv[1]
with open(file_name, 'r') as f:
config_file = f.read()
base = ['traffic-policy']
config = ConfigTree(config_file)
if not config.exists(base):
# Nothing to do
exit(0)
iface_config = {}
if config.exists(['interfaces']):
def get_qos(config, interface, interface_base):
if config.exists(interface_base):
tmp = { interface : {} }
if config.exists(interface_base + ['in']):
tmp[interface]['ingress'] = config.return_value(interface_base + ['in'])
if config.exists(interface_base + ['out']):
tmp[interface]['egress'] = config.return_value(interface_base + ['out'])
config.delete(interface_base)
return tmp
return None
# Migrate "interface ethernet eth0 traffic-policy in|out" to "qos interface eth0 ingress|egress"
for type in config.list_nodes(['interfaces']):
for interface in config.list_nodes(['interfaces', type]):
interface_base = ['interfaces', type, interface, 'traffic-policy']
tmp = get_qos(config, interface, interface_base)
if tmp: iface_config.update(tmp)
vif_path = ['interfaces', type, interface, 'vif']
if config.exists(vif_path):
for vif in config.list_nodes(vif_path):
vif_interface_base = vif_path + [vif, 'traffic-policy']
ifname = f'{interface}.{vif}'
tmp = get_qos(config, ifname, vif_interface_base)
if tmp: iface_config.update(tmp)
vif_s_path = ['interfaces', type, interface, 'vif-s']
if config.exists(vif_s_path):
for vif_s in config.list_nodes(vif_s_path):
vif_s_interface_base = vif_s_path + [vif_s, 'traffic-policy']
ifname = f'{interface}.{vif_s}'
tmp = get_qos(config, ifname, vif_s_interface_base)
if tmp: iface_config.update(tmp)
# vif-c interfaces MUST be migrated before their parent vif-s
# interface as the migrate_*() functions delete the path!
vif_c_path = ['interfaces', type, interface, 'vif-s', vif_s, 'vif-c']
if config.exists(vif_c_path):
for vif_c in config.list_nodes(vif_c_path):
vif_c_interface_base = vif_c_path + [vif_c, 'traffic-policy']
ifname = f'{interface}.{vif_s}.{vif_c}'
tmp = get_qos(config, ifname, vif_s_interface_base)
if tmp: iface_config.update(tmp)
# Now we have the information which interface uses which QoS policy.
# Interface binding will be moved to the qos CLi tree
config.set(['qos'])
config.copy(base, ['qos', 'policy'])
config.delete(base)
# TODO
# - remove burst from network emulator
def change_cli_bandwidth(config, path):
if config.exists(path + ['bandwidth']):
bw = config.return_value(path + ['bandwidth'])
if bw.endswith('%'):
bw = bandwidth_percent_to_val(interface, bw.rstrip('%'))
config.set(path + ['bandwidth'], value=bw)
return
# Now map the interface policy binding to the new CLI syntax
for interface, interface_config in iface_config.items():
if 'ingress' in interface_config:
config.set(['qos', 'interface', interface, 'ingress'], value=interface_config['ingress'])
if 'egress' in interface_config:
config.set(['qos', 'interface', interface, 'egress'], value=interface_config['egress'])
# QoS policy <-> interface binding is now established - we now can adjust some
# CLI values like bandwidth in percent
for direction in ['ingress', 'egress']:
if direction not in interface_config:
continue
# Convert % bandwidth values to absolute values
for policy in config.list_nodes(['qos', 'policy']):
for policy_name in config.list_nodes(['qos', 'policy', policy]):
if policy_name == interface_config[direction]:
policy_base = ['qos', 'policy', policy, policy_name]
# This is for the toplevel bandwidth node on a policy
change_cli_bandwidth(config, policy_base)
# This is for class based bandwidth value
if config.exists(policy_base + ['class']):
for cls in config.list_nodes(policy_base + ['class']):
cls_base = policy_base + ['class', cls]
change_cli_bandwidth(config, cls_base)
# This is for the bandwidth value specified under the
# policy "default" tree
if config.exists(policy_base + ['default']):
default_base = policy_base + ['default']
change_cli_bandwidth(config, default_base)
# Remove "burst" CLI node from network emulator
netem_base = ['qos', 'policy', 'network-emulator']
if config.exists(netem_base):
for policy_name in config.list_nodes(netem_base):
if config.exists(netem_base + [policy_name, 'burst']):
config.delete(netem_base + [policy_name, 'burst'])
try:
with open(file_name, 'w') as f:
f.write(config.to_string())
except OSError as e:
print("Failed to save the modified config: {}".format(e))
exit(1)
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