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#!/usr/bin/env python3
#
# Copyright (C) 2020-2024 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 <http://www.gnu.org/licenses/>.
import os
import unittest
from glob import glob
from json import loads
from netifaces import AF_INET
from netifaces import AF_INET6
from netifaces import ifaddresses
from base_interfaces_test import BasicInterfaceTest
from vyos.configsession import ConfigSessionError
from vyos.ifconfig import Section
from vyos.frrender import mgmt_daemon
from vyos.utils.file import read_file
from vyos.utils.network import is_intf_addr_assigned
from vyos.utils.network import is_ipv6_link_local
from vyos.utils.process import cmd
from vyos.utils.process import popen
class EthernetInterfaceTest(BasicInterfaceTest.TestCase):
@classmethod
def setUpClass(cls):
cls._base_path = ['interfaces', 'ethernet']
cls._mirror_interfaces = ['dum21354']
# We only test on physical interfaces and not VLAN (sub-)interfaces
if 'TEST_ETH' in os.environ:
tmp = os.environ['TEST_ETH'].split()
cls._interfaces = tmp
else:
for tmp in Section.interfaces('ethernet', vlan=False):
cls._interfaces.append(tmp)
cls._macs = {}
for interface in cls._interfaces:
cls._macs[interface] = read_file(f'/sys/class/net/{interface}/address')
# call base-classes classmethod
super(EthernetInterfaceTest, cls).setUpClass()
def tearDown(self):
for interface in self._interfaces:
# when using a dedicated interface to test via TEST_ETH environment
# variable only this one will be cleared in the end - usable to test
# ethernet interfaces via SSH
self.cli_delete(self._base_path + [interface])
self.cli_set(self._base_path + [interface, 'duplex', 'auto'])
self.cli_set(self._base_path + [interface, 'speed', 'auto'])
self.cli_set(self._base_path + [interface, 'hw-id', self._macs[interface]])
self.cli_commit()
# Verify that no address remains on the system as this is an eternal
# interface.
for interface in self._interfaces:
self.assertNotIn(AF_INET, ifaddresses(interface))
# required for IPv6 link-local address
self.assertIn(AF_INET6, ifaddresses(interface))
for addr in ifaddresses(interface)[AF_INET6]:
# checking link local addresses makes no sense
if is_ipv6_link_local(addr['addr']):
continue
self.assertFalse(is_intf_addr_assigned(interface, addr['addr']))
# Ensure no VLAN interfaces are left behind
tmp = [
x
for x in Section.interfaces('ethernet')
if x.startswith(f'{interface}.')
]
self.assertListEqual(tmp, [])
def test_offloading_rps(self):
# enable RPS on all available CPUs, RPS works with a CPU bitmask,
# where each bit represents a CPU (core/thread). The formula below
# expands to rps_cpus = 255 for a 8 core system
rps_cpus = (1 << os.cpu_count()) - 1
# XXX: we should probably reserve one core when the system is under
# high preasure so we can still have a core left for housekeeping.
# This is done by masking out the lowst bit so CPU0 is spared from
# receive packet steering.
rps_cpus &= ~1
for interface in self._interfaces:
self.cli_set(self._base_path + [interface, 'offload', 'rps'])
self.cli_commit()
for interface in self._interfaces:
cpus = read_file(f'/sys/class/net/{interface}/queues/rx-0/rps_cpus')
# remove the nasty ',' separation on larger strings
cpus = cpus.replace(',', '')
cpus = int(cpus, 16)
self.assertEqual(f'{cpus:x}', f'{rps_cpus:x}')
def test_offloading_rfs(self):
global_rfs_flow = 32768
rfs_flow = global_rfs_flow
for interface in self._interfaces:
self.cli_set(self._base_path + [interface, 'offload', 'rfs'])
self.cli_commit()
for interface in self._interfaces:
queues = len(glob(f'/sys/class/net/{interface}/queues/rx-*'))
rfs_flow = int(global_rfs_flow / queues)
for i in range(0, queues):
tmp = read_file(
f'/sys/class/net/{interface}/queues/rx-{i}/rps_flow_cnt'
)
self.assertEqual(int(tmp), rfs_flow)
tmp = read_file('/proc/sys/net/core/rps_sock_flow_entries')
self.assertEqual(int(tmp), global_rfs_flow)
# delete configuration of RFS and check all values returned to default "0"
for interface in self._interfaces:
self.cli_delete(self._base_path + [interface, 'offload', 'rfs'])
self.cli_commit()
for interface in self._interfaces:
queues = len(glob(f'/sys/class/net/{interface}/queues/rx-*'))
rfs_flow = int(global_rfs_flow / queues)
for i in range(0, queues):
tmp = read_file(
f'/sys/class/net/{interface}/queues/rx-{i}/rps_flow_cnt'
)
self.assertEqual(int(tmp), 0)
def test_non_existing_interface(self):
unknonw_interface = self._base_path + ['eth667']
self.cli_set(unknonw_interface)
# check validate() - interface does not exist
with self.assertRaises(ConfigSessionError):
self.cli_commit()
# we need to remove this wrong interface from the configuration
# manually, else tearDown() will have problem in commit()
self.cli_delete(unknonw_interface)
def test_speed_duplex_verify(self):
for interface in self._interfaces:
self.cli_set(self._base_path + [interface, 'speed', '1000'])
# check validate() - if either speed or duplex is not auto, the
# other one must be manually configured, too
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(self._base_path + [interface, 'speed', 'auto'])
self.cli_commit()
def test_ethtool_ring_buffer(self):
for interface in self._interfaces:
# We do not use vyos.ethtool here to not have any chance
# for invalid testcases. Re-gain data by hand
tmp = cmd(f'sudo ethtool --json --show-ring {interface}')
tmp = loads(tmp)
max_rx = str(tmp[0]['rx-max'])
max_tx = str(tmp[0]['tx-max'])
self.cli_set(self._base_path + [interface, 'ring-buffer', 'rx', max_rx])
self.cli_set(self._base_path + [interface, 'ring-buffer', 'tx', max_tx])
self.cli_commit()
for interface in self._interfaces:
tmp = cmd(f'sudo ethtool --json --show-ring {interface}')
tmp = loads(tmp)
max_rx = str(tmp[0]['rx-max'])
max_tx = str(tmp[0]['tx-max'])
rx = str(tmp[0]['rx'])
tx = str(tmp[0]['tx'])
# validate if the above change was carried out properly and the
# ring-buffer size got increased
self.assertEqual(max_rx, rx)
self.assertEqual(max_tx, tx)
def test_ethtool_flow_control(self):
for interface in self._interfaces:
# Disable flow-control
self.cli_set(self._base_path + [interface, 'disable-flow-control'])
# Check current flow-control state on ethernet interface
out, err = popen(f'sudo ethtool --json --show-pause {interface}')
# Flow-control not supported - test if it bails out with a proper
# this is a dynamic path where err = 1 on VMware, but err = 0 on
# a physical box.
if bool(err):
with self.assertRaises(ConfigSessionError):
self.cli_commit()
else:
out = loads(out)
# Flow control is on
self.assertTrue(out[0]['autonegotiate'])
# commit change on CLI to disable-flow-control and re-test
self.cli_commit()
out, err = popen(f'sudo ethtool --json --show-pause {interface}')
out = loads(out)
self.assertFalse(out[0]['autonegotiate'])
def test_ethtool_evpn_uplink_tarcking(self):
for interface in self._interfaces:
self.cli_set(self._base_path + [interface, 'evpn', 'uplink'])
self.cli_commit()
for interface in self._interfaces:
frrconfig = self.getFRRconfig(f'interface {interface}', daemon=mgmt_daemon)
self.assertIn(' evpn mh uplink', frrconfig)
def test_switchdev(self):
interface = self._interfaces[0]
self.cli_set(self._base_path + [interface, 'switchdev'])
# check validate() - virtual interfaces do not support switchdev
# should print out warning that enabling failed
self.cli_delete(self._base_path + [interface, 'switchdev'])
if __name__ == '__main__':
unittest.main(verbosity=2)
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