openstack/os-net-config
Code Issues Proposed changes
27915c67c8
os-net-config/os_net_config/sriov_config.py
waleedm b1a7c9c5f0 Fix breaking vf-lag functionality in os-net-config 
Because of racing issue to activate vf-lag after moving the second
sriov_pf interface to switchdev mode in Nvidia\Mellanox nics, we may
bind sriov_vfs while the LAG is not active yet.
Another reason for breaking vf-lag functionality is that we are doing
ifdown/ifup for sriov_pfs after binding the vfs(in case of linux_bond
is member of ovs_bridge).

As a solution for this issue, we are doing the binding after assuring
the LAG is active, and also moving the ifdown/ifup before start binding

Closes-Bug: #2020085
Change-Id: If0cad8c856ee62064205b9a88f0148980653fcb2
2023-05-29 11:06:18 +00:00

817 lines
30 KiB
Python
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# -*- coding: utf-8 -*-
# Copyright 2014 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
# The sriov_config.py module does the SR-IOV PF configuration.
# It'll be invoked by the sriov_config systemd service for the persistence of
# the SR-IOV configuration across reboots. And os-net-config:utils also invokes
# it for the first time configuration.
# An entry point os-net-config-sriov is added for invocation of this module.
import argparse
import os
import pyudev
import queue
import re
import sys
import time
from json import loads
from os_net_config import common
from os_net_config import sriov_bind_config
from oslo_concurrency import processutils
logger = common.configure_logger()
_UDEV_RULE_FILE = '/etc/udev/rules.d/80-persistent-os-net-config.rules'
_UDEV_LEGACY_RULE_FILE = '/etc/udev/rules.d/70-os-net-config-sriov.rules'
_IFUP_LOCAL_FILE = '/sbin/ifup-local'
_RESET_SRIOV_RULES_FILE = '/etc/udev/rules.d/70-tripleo-reset-sriov.rules'
_ALLOCATE_VFS_FILE = '/etc/sysconfig/allocate_vfs'
_MLNX_DRIVER = "mlx5_core"
MLNX_UNBIND_FILE_PATH = "/sys/bus/pci/drivers/mlx5_core/unbind"
MLNX5_VDPA_KMODS = [
"vdpa",
"vhost_vdpa",
"mlx5_vdpa",
]
MAX_RETRIES = 10
MLNX_LAG_PATH = "/sys/kernel/debug/mlx5/{pf_pci}/lag/state"
PF_FUNC_RE = re.compile(r"\.(\d+)$", 0)
VF_PCI_RE = re.compile(r'/[\d]{4}\:(\d+):(\d+)\.(\d+)/net/[^\/]+$')
# In order to keep VF representor name consistent specially after the upgrade
# proccess, we should have a udev rule to handle that.
# The udev rule will rename the VF representor as "<sriov_pf_name>_<vf_num>"
_REP_LINK_NAME_FILE = "/etc/udev/rep-link-name.sh"
_REP_LINK_NAME_DATA = '''#!/bin/bash
# This file is autogenerated by os-net-config
set -x
PORT="$1"
echo "NUMBER=${PORT##pf*vf}"
'''
# Create a queue for passing the udev network events
vf_queue = queue.Queue()
# Global variable to store link between pci/pf
# for udev rule creationg when dealing with mlnx vdpa
vf_to_pf = {}
class SRIOVNumvfsException(ValueError):
pass
def udev_event_handler(action, device):
event = {"action": action, "device": device.sys_path}
logger.info(
f"Received udev event {event['action']} for {event['device']}"
)
vf_queue.put(event)
def _norm_path(dev, suffix):
return os.path.normpath(os.path.join(dev, suffix))
def _get_pf_path(device):
pf_path = _norm_path(device, "../../physfn/net")
if not os.path.isdir(pf_path):
pf_path = _norm_path(device, "physfn/net")
if not os.path.isdir(pf_path):
pf_path = None
return pf_path
def _driver_unbind(dev):
vf_pci_path = f"/sys/bus/pci/devices/{dev}/driver"
if os.path.exists(vf_pci_path):
logger.info(f"{dev}: Unbinding driver")
with open(MLNX_UNBIND_FILE_PATH, 'w') as f:
f.write(dev)
else:
logger.info(f"{dev}: No driver to unbind")
def _wait_for_vf_creation(pf_name, numvfs):
vf_count = 0
pf_config = common.get_sriov_map(pf_name)
vdpa = False
if len(pf_config):
vdpa = pf_config[0].get('vdpa', False)
while vf_count < numvfs:
try:
# wait for 5 seconds after every udev event
event = vf_queue.get(True, 5)
vf_name = os.path.basename(event["device"])
pf_path = _get_pf_path(event["device"])
logger.debug(f"{event['device']}: Got udev event: {event}")
if pf_path:
pf_nic = os.listdir(pf_path)
# NOTE(dvd): For vDPA devices, the VF event we're interrested
# in contains all the VFs. We can also use this to build a dict
# to correlate the VF pci address to the PF when creating the
# vdpa representator udev rule
#
# Data structure sample for vDPA:
# pf_path:
# /sys/devices/pci0000:00/0000:00:02.2/0000:06:01.2/physfn/net
# pf_nic: ['enp6s0f1np1_0', 'enp6s0f1np1_1', 'enp6s0f1np1']
# pf_name: enp6s0f1np1
if vf_name not in vf_to_pf and pf_name in pf_nic:
vf_to_pf[vf_name] = {
'device': event['device'],
'pf': pf_name
}
logger.info(
f"{pf_name}: VF {vf_name} created"
)
vf_count += 1
elif vf_name in vf_to_pf:
logger.debug(
f"{pf_name}: VF {vf_name} was already created"
)
elif vdpa:
logger.warning(f"{pf_name}: This PF is not in {pf_path}")
else:
logger.warning(
f"{pf_name}: Unable to parse event {event['device']}"
)
elif not vdpa:
logger.warning(f"{event['device']}: Unable to find PF")
except queue.Empty:
logger.info(f"{pf_name}: Timeout in the creation of VFs")
return
logger.info(f"{pf_name}: Required VFs are created")
def get_numvfs(ifname):
"""Getting sriov_numvfs for PF
Wrapper that will get the sriov_numvfs file for a PF.
:param ifname: interface name (ie: p1p1)
:returns: int -- the number of current VFs on ifname
:raises: SRIOVNumvfsException
"""
sriov_numvfs_path = common.get_dev_path(ifname, "sriov_numvfs")
logger.debug(f"{ifname}: Getting numvfs for interface")
try:
with open(sriov_numvfs_path, 'r') as f:
curr_numvfs = int(f.read())
except IOError as exc:
msg = f"{ifname}: Unable to read numvfs: {exc}"
raise SRIOVNumvfsException(msg)
logger.debug(f"{ifname}: Interface has {curr_numvfs} configured")
return curr_numvfs
def set_numvfs(ifname, numvfs):
"""Setting sriov_numvfs for PF
Wrapper that will set the sriov_numvfs file for a PF.
After numvfs has been set for an interface, _wait_for_vf_creation will be
called to monitor the creation.
Some restrictions:
- if current number of VF is already defined, we can't change numvfs
- if sriov_numvfs doesn't exist for an interface, we can't create it
:param ifname: interface name (ie: p1p1)
:param numvfs: an int that represents the number of VFs to be created.
:returns: int -- the number of current VFs on ifname
:raises: SRIOVNumvfsException
"""
curr_numvfs = get_numvfs(ifname)
logger.debug(f"{ifname}: Interface has {curr_numvfs} configured, setting "
f"to {numvfs}")
if not isinstance(numvfs, int):
msg = (f"{ifname}: Unable to configure pf with numvfs: {numvfs}\n"
f"numvfs must be an integer")
raise SRIOVNumvfsException(msg)
if numvfs != curr_numvfs:
if curr_numvfs != 0:
logger.warning(f"{ifname}: Numvfs already configured to "
f"{curr_numvfs}")
return curr_numvfs
sriov_numvfs_path = common.get_dev_path(ifname, "sriov_numvfs")
try:
logger.debug(f"Setting {sriov_numvfs_path} to {numvfs}")
with open(sriov_numvfs_path, "w") as f:
f.write("%d" % numvfs)
except IOError as exc:
msg = (f"{ifname} Unable to configure pf with numvfs: {numvfs}\n"
f"{exc}")
raise SRIOVNumvfsException(msg)
_wait_for_vf_creation(ifname, numvfs)
curr_numvfs = get_numvfs(ifname)
if curr_numvfs != numvfs:
msg = (f"{ifname}: Unable to configure pf with numvfs: {numvfs}\n"
"sriov_numvfs file is not set to the targeted number of "
"vfs")
raise SRIOVNumvfsException(msg)
return curr_numvfs
def restart_ovs_and_pfs_netdevs():
sriov_map = common.get_sriov_map()
processutils.execute('/usr/bin/systemctl', 'restart', 'openvswitch')
for item in sriov_map:
if item['device_type'] == 'pf':
if_down_interface(item['name'])
if_up_interface(item['name'])
def cleanup_puppet_config():
file_contents = ""
if os.path.exists(_RESET_SRIOV_RULES_FILE):
os.remove(_RESET_SRIOV_RULES_FILE)
if os.path.exists(_ALLOCATE_VFS_FILE):
os.remove(_ALLOCATE_VFS_FILE)
if os.path.exists(_IFUP_LOCAL_FILE):
# Remove the invocation of allocate_vfs script generated by puppet
# After the removal of allocate_vfs, if the ifup-local file has just
# "#!/bin/bash" left, then remove the file as well.
with open(_IFUP_LOCAL_FILE) as oldfile:
for line in oldfile:
if "/etc/sysconfig/allocate_vfs" not in line:
file_contents = file_contents + line
if file_contents.strip() == "#!/bin/bash":
os.remove(_IFUP_LOCAL_FILE)
else:
with open(_IFUP_LOCAL_FILE, 'w') as newfile:
newfile.write(file_contents)
def udev_monitor_setup():
# Create a context for pyudev and observe udev events for network
context = pyudev.Context()
monitor = pyudev.Monitor.from_netlink(context)
monitor.filter_by('net')
observer = pyudev.MonitorObserver(monitor, udev_event_handler)
return observer
def udev_monitor_start(observer):
observer.start()
def udev_monitor_stop(observer):
observer.stop()
def is_partitioned_pf(dev_name: str) -> bool:
"""Check if any nic-partition(VF) is already used
Given a PF device, returns True if any VFs of this
device are in-use.
"""
sriov_map = common.get_sriov_map()
for config in sriov_map:
devtype = config.get('device_type', None)
if devtype == 'vf':
name = config.get('device', {}).get('name')
vf_name = config.get('name')
if dev_name == name:
logger.warning(f"{name} has VF({vf_name}) used by host")
return True
return False
def configure_sriov_pf(execution_from_cli=False, restart_openvswitch=False):
observer = udev_monitor_setup()
udev_monitor_start(observer)
sriov_map = common.get_sriov_map()
dpdk_vfs_pcis_list = []
vf_lag_sriov_pfs_list = []
trigger_udev_rule = False
# Cleanup the previous config by puppet-tripleo
cleanup_puppet_config()
if any(item.get('vdpa') for item in sriov_map):
common.load_kmods(MLNX5_VDPA_KMODS)
vdpa_devices = get_vdpa_vhost_devices()
for item in sriov_map:
if item['device_type'] == 'pf':
if pf_configure_status(item):
logger.debug(f"PF {item['name']} is already configured")
continue
_pf_interface_up(item)
if item.get('link_mode') == "legacy":
# Add a udev rule to configure the VF's when PF's are
# released by a guest
if not is_partitioned_pf(item['name']):
add_udev_rule_for_legacy_sriov_pf(item['name'],
item['numvfs'])
# When configuring vdpa, we need to configure switchdev before
# we create the VFs
is_mlnx = common.is_mellanox_interface(item['name'])
vdpa = item.get('vdpa')
# Configure switchdev mode when vdpa
# It has to happen before we set_numvfs
if vdpa and is_mlnx:
configure_switchdev(item['name'])
set_numvfs(item['name'], item['numvfs'])
# Configure switchdev, unbind driver and configure vdpa
if item.get('link_mode') == "switchdev" and is_mlnx:
logger.info(f"{item['name']}: Mellanox card")
vf_pcis_list = get_vf_pcis_list(item['name'])
for vf_pci in vf_pcis_list:
if not vdpa:
# For DPDK, we need to unbind the driver
_driver_unbind(vf_pci)
else:
if vf_pci not in vdpa_devices:
configure_vdpa_vhost_device(vf_pci)
else:
logger.info(
f"{item['name']}: vDPA device already created "
f"for {vf_pci}"
)
if vdpa:
common.restorecon('/dev/vhost-*')
logger.info(f"{item['name']}: Adding udev rules")
# Adding a udev rule to make vf-representors unmanaged by
# NetworkManager
add_udev_rule_to_unmanage_vf_representors_by_nm()
# Adding a udev rule to save the sriov_pf name
trigger_udev_rule = add_udev_rule_for_sriov_pf(item['name'])\
or trigger_udev_rule
trigger_udev_rule = add_udev_rule_for_vf_representors(
item['name']) or trigger_udev_rule
if not vdpa:
# This is used for the sriov_bind_config
dpdk_vfs_pcis_list += vf_pcis_list
# Configure flow steering mode, default to smfs
configure_flow_steering(item['name'],
item.get('steering_mode', 'smfs'))
# Configure switchdev mode
configure_switchdev(item['name'])
# Add sriovpf to vf_lag_sriov_pfs_list if it's
# a linux bond member (lag_candidate)
if item.get('lag_candidate', False):
vf_lag_sriov_pfs_list.append(item['name'])
# Adding a udev rule to rename vf-representors
else:
trigger_udev_rule = add_udev_rule_for_vdpa_representors(
item['name']) or trigger_udev_rule
# Moving the sriov-PFs to switchdev mode will put the netdev
# interfaces in down state.
# In case we are running during initial deployment,
# bring the interfaces up.
# In case we are running as part of the sriov_config service
# after reboot, net config scripts, which run after
# sriov_config service will bring the interfaces up.
if execution_from_cli:
if_up_interface(item['name'])
if restart_openvswitch:
restart_ovs_and_pfs_netdevs()
if vf_lag_sriov_pfs_list and execution_from_cli:
_wait_for_lag_creation(vf_lag_sriov_pfs_list)
if dpdk_vfs_pcis_list and not vdpa:
sriov_bind_pcis_map = {_MLNX_DRIVER: dpdk_vfs_pcis_list}
if not execution_from_cli:
sriov_bind_config.update_sriov_bind_pcis_map(sriov_bind_pcis_map)
else:
sriov_bind_config.configure_sriov_bind_service()
sriov_bind_config.bind_vfs(sriov_bind_pcis_map)
# Trigger udev rules if there is new rules written
if trigger_udev_rule:
trigger_udev_rules()
udev_monitor_stop(observer)
def _wait_for_uplink_rep_creation(pf_name):
uplink_rep_phys_switch_id_path = f"/sys/class/net/{pf_name}/phys_switch_id"
for i in range(MAX_RETRIES):
if common.get_file_data(uplink_rep_phys_switch_id_path):
logger.info(f"{pf_name} Uplink representor ready")
break
time.sleep(1)
else:
raise RuntimeError(f"{pf_name}: Timeout waiting uplink representor")
def _wait_for_lag_creation(lag_sriov_pf_list):
for sriov_pf in lag_sriov_pf_list:
pf_pci = get_pf_pci(sriov_pf)
lag_path = MLNX_LAG_PATH.format(pf_pci=pf_pci)
if os.path.exists(lag_path):
for i in range(MAX_RETRIES):
lag_state = common.get_file_data(lag_path).strip()
if lag_state == "active":
logger.info(f"VF-LAG is enabled for interface {sriov_pf}"
f" after {i} retries")
break
time.sleep(1)
else:
raise RuntimeError("VF-LAG is not created for interface"
f" {sriov_pf} after {i} retries")
else:
logger.warning(f"Lag path {lag_path} does not exist for this "
"kernel, skipping..")
def create_rep_link_name_script():
with open(_REP_LINK_NAME_FILE, "w") as f:
f.write(_REP_LINK_NAME_DATA)
# Make the _REP_LINK_NAME_FILE executable
os.chmod(_REP_LINK_NAME_FILE, 0o755)
def add_udev_rule_for_sriov_pf(pf_name):
logger.info(f"{pf_name}: adding udev rules for sriov")
pf_pci = get_pf_pci(pf_name)
udev_data_line = 'SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", '\
f'KERNELS=="{pf_pci}", NAME="{pf_name}"'
return add_udev_rule(udev_data_line, _UDEV_RULE_FILE)
def add_udev_rule_for_legacy_sriov_pf(pf_name, numvfs):
logger.info(f"{pf_name}: adding udev rules for legacy sriov: {numvfs}")
udev_line = f'KERNEL=="{pf_name}", '\
f'RUN+="/bin/os-net-config-sriov -n %k:{numvfs}"'
pattern = f'KERNEL=="{pf_name}", RUN+="/bin/os-net-config-sriov -n'
return add_udev_rule(udev_line, _UDEV_LEGACY_RULE_FILE, pattern)
def add_udev_rule_for_vf_representors(pf_name):
logger.info(f"{pf_name}: adding udev rules for vf representators")
phys_switch_id_path = common.get_dev_path(pf_name,
"_phys_switch_id")
phys_switch_id = common.get_file_data(phys_switch_id_path).strip()
pf_pci = get_pf_pci(pf_name)
pf_fun_num_match = PF_FUNC_RE.search(pf_pci)
if not pf_fun_num_match:
logger.error(f"{pf_name}: Failed to get function number "
"and so failed to create a udev rule for renaming "
"its vf-represent")
return
pf_fun_num = pf_fun_num_match.group(1)
udev_data_line = 'SUBSYSTEM=="net", ACTION=="add", ATTR{phys_switch_id}'\
'=="%s", ATTR{phys_port_name}=="pf%svf*", '\
'IMPORT{program}="%s $attr{phys_port_name}", '\
'NAME="%s_$env{NUMBER}"' % (phys_switch_id,
pf_fun_num,
_REP_LINK_NAME_FILE,
pf_name)
create_rep_link_name_script()
return add_udev_rule(udev_data_line, _UDEV_RULE_FILE)
def add_udev_rule_for_vdpa_representors(pf_name):
logger.info(f"{pf_name}: adding udev rules for vdpa representators")
udev_lines = ""
for vf, att in vf_to_pf.items():
mac = common.interface_mac(vf)
vadd = VF_PCI_RE.search(att.get('device'))
if not vadd:
logger.error(
f"{att.get('device')}/{vf}: Failed to get pf/vf numbers "
"and so failed to create a udev rule for renaming vdpa dev"
)
continue
vdpa_rep = f"vdpa{vadd.group(1)}p{vadd.group(2)}vf{vadd.group(3)}"
logger.info(f"{vdpa_rep}: Adding udev representor rule.")
udev_lines += (
'SUBSYSTEM=="net", ACTION=="add", '
f'ATTR{{address}}=="{mac}", NAME="{vdpa_rep}"\n'
)
return add_udev_rule(udev_lines, _UDEV_RULE_FILE)
def add_udev_rule_to_unmanage_vf_representors_by_nm():
logger.info("adding udev rules to unmanage vf representators")
udev_data_line = 'SUBSYSTEM=="net", ACTION=="add", ATTR{phys_switch_id}'\
'!="", ATTR{phys_port_name}=="pf*vf*", '\
'ENV{NM_UNMANAGED}="1"'
return add_udev_rule(udev_data_line, _UDEV_RULE_FILE)
def add_udev_rule(udev_data, udev_file, pattern=None):
logger.debug(f"adding udev rule to {udev_file}: {udev_data}")
trigger_udev_rule = False
udev_data = udev_data.strip()
if not pattern:
pattern = udev_data
if not os.path.exists(udev_file):
with open(udev_file, "w") as f:
data = "# This file is autogenerated by os-net-config\n"\
f"{udev_data}\n"
f.write(data)
else:
file_data = common.get_file_data(udev_file)
udev_lines = file_data.splitlines()
if pattern in file_data:
if udev_data in udev_lines:
return trigger_udev_rule
with open(udev_file, "w") as f:
for line in udev_lines:
if pattern in line:
f.write(udev_data + "\n")
else:
f.write(line + "\n")
else:
with open(udev_file, "a") as f:
f.write(udev_data + "\n")
reload_udev_rules()
trigger_udev_rule = True
return trigger_udev_rule
def reload_udev_rules():
try:
processutils.execute('/usr/sbin/udevadm', 'control', '--reload-rules')
logger.info("udev rules reloaded successfully")
except processutils.ProcessExecutionError as exc:
logger.error(f"Failed to reload udev rules: {exc}")
raise
def trigger_udev_rules():
try:
processutils.execute('/usr/sbin/udevadm', 'trigger', '--action=add',
'--attr-match=subsystem=net')
logger.info("udev rules triggered successfully")
except processutils.ProcessExecutionError as exc:
logger.error(f"Failed to trigger udev rules: {exc}")
raise
def configure_switchdev(pf_name):
pf_pci = get_pf_pci(pf_name)
pf_device_id = get_pf_device_id(pf_name)
if pf_device_id == "0x1013" or pf_device_id == "0x1015":
try:
processutils.execute('/usr/sbin/devlink', 'dev', 'eswitch', 'set',
f'pci/{pf_pci}', 'inline-mode', 'transport')
except processutils.ProcessExecutionError as exc:
logger.error(f"{pf_name}: Failed to set inline-mode to transport "
f"for {pf_pci}: {exc}")
raise
try:
processutils.execute('/usr/sbin/devlink', 'dev', 'eswitch', 'set',
f'pci/{pf_pci}', 'mode', 'switchdev')
except processutils.ProcessExecutionError as exc:
logger.error(f"{pf_name}: Failed to set mode to switchdev for "
f"{pf_pci}: {exc}")
raise
logger.info(f"{pf_name}: Device pci/{pf_pci} set to switchdev mode.")
# WA to make sure that the uplink_rep is ready after moving to switchdev,
# as moving to switchdev will remove the sriov_pf and create uplink
# representor, so we need to make sure that uplink representor is ready
# before proceed
_wait_for_uplink_rep_creation(pf_name)
try:
processutils.execute('/usr/sbin/ethtool', '-K', pf_name,
'hw-tc-offload', 'on')
logger.info(f"{pf_name}: Enabled \"hw-tc-offload\" for PF.")
except processutils.ProcessExecutionError as exc:
logger.error(f"{pf_name}: Failed to enable hw-tc-offload: {exc}")
raise
def get_vdpa_vhost_devices():
logger.info(f"Getting list of vdpa devices")
try:
stdout, stderr = processutils.execute('vdpa', '-j', 'dev')
except processutils.ProcessExecutionError as exc:
logger.error(f"Failed to get vdpa vhost devices: {exc}")
raise
return loads(stdout)['dev']
def configure_vdpa_vhost_device(pci):
logger.info(f"{pci}: Creating vdpa device")
try:
processutils.execute('vdpa', 'dev', 'add', 'name', pci,
'mgmtdev', f'pci/{pci}')
except processutils.ProcessExecutionError as exc:
logger.error(f"{pci}: Failed to create vdpa vhost device: {exc}")
raise
def configure_flow_steering(pf_name, steering_mode):
pf_pci = get_pf_pci(pf_name)
try:
processutils.execute('/usr/sbin/devlink', 'dev', 'param', 'set',
f'pci/{pf_pci}', 'name', 'flow_steering_mode',
'value', steering_mode, 'cmode', 'runtime')
logger.info(f"{pf_name}: Device pci/{pf_pci} is set to"
" {steering_mode} steering mode.")
except processutils.ProcessExecutionError as exc:
logger.warning(f"{pf_name}: Could not set pci/{pf_pci} to"
f" {steering_mode} steering mode: {exc}")
def run_ip_config_cmd(*cmd, **kwargs):
logger.info("Running %s" % ' '.join(cmd))
try:
processutils.execute(*cmd, delay_on_retry=True, attempts=10, **kwargs)
except processutils.ProcessExecutionError as exc:
logger.error("Failed to execute %s: %s" % (' '.join(cmd), exc))
raise
def _pf_interface_up(pf_device):
if 'promisc' in pf_device:
run_ip_config_cmd('ip', 'link', 'set', 'dev', pf_device['name'],
'promisc', pf_device['promisc'])
logger.info(f"{pf_device['name']}: Bringing up PF")
run_ip_config_cmd('ip', 'link', 'set', 'dev', pf_device['name'], 'up')
def pf_configure_status(pf_device):
return pf_device['numvfs'] == get_numvfs(pf_device['name'])
def run_ip_config_cmd_safe(raise_error, *cmd, **kwargs):
try:
run_ip_config_cmd(*cmd)
except processutils.ProcessExecutionError:
if raise_error:
raise
def get_pf_pci(pf_name):
pf_pci_path = common.get_dev_path(pf_name, "uevent")
pf_info = common.get_file_data(pf_pci_path)
pf_pci = re.search(r'PCI_SLOT_NAME=(.*)', pf_info, re.MULTILINE).group(1)
return pf_pci
def get_pf_device_id(pf_name):
pf_device_path = common.get_dev_path(pf_name, "device")
pf_device_id = common.get_file_data(pf_device_path).strip()
return pf_device_id
def get_vf_pcis_list(pf_name):
vf_pcis_list = []
pf_files = os.listdir(common.get_dev_path(pf_name, "_device"))
for pf_file in pf_files:
if pf_file.startswith("virtfn"):
vf_info = common.get_file_data(common.get_dev_path(pf_name,
f"{pf_file}/uevent"))
vf_pcis_list.append(re.search(r'PCI_SLOT_NAME=(.*)',
vf_info, re.MULTILINE).group(1))
return vf_pcis_list
def if_down_interface(device):
logger.info(f"{device}: Running /sbin/ifdown")
try:
processutils.execute('/sbin/ifdown', device)
except processutils.ProcessExecutionError:
logger.error(f"{device}: Failed to ifdown")
raise
def if_up_interface(device):
logger.info(f"{device}: Running /sbin/ifup")
try:
processutils.execute('/sbin/ifup', device)
except processutils.ProcessExecutionError:
logger.error(f"{device}: Failed to ifup")
raise
def configure_sriov_vf():
sriov_map = common.get_sriov_map()
for item in sriov_map:
raise_error = True
if item['device_type'] == 'vf':
pf_name = item['device']['name']
vfid = item['device']['vfid']
base_cmd = ('ip', 'link', 'set', 'dev', pf_name, 'vf', str(vfid))
logger.info(f"{pf_name}: Configuring settings for VF: {vfid} "
f"VF name: {item['name']}")
raise_error = True
if 'macaddr' in item:
cmd = base_cmd + ('mac', item['macaddr'])
run_ip_config_cmd(*cmd)
if 'vlan_id' in item:
vlan_cmd = base_cmd + ('vlan', str(item['vlan_id']))
if 'qos' in item:
vlan_cmd = vlan_cmd + ('qos', str(item['qos']))
run_ip_config_cmd(*vlan_cmd)
if 'max_tx_rate' in item:
cmd = base_cmd + ('max_tx_rate', str(item['max_tx_rate']))
if item['max_tx_rate'] == 0:
raise_error = False
run_ip_config_cmd_safe(raise_error, *cmd)
if 'min_tx_rate' in item:
cmd = base_cmd + ('min_tx_rate', str(item['min_tx_rate']))
if item['min_tx_rate'] == 0:
raise_error = False
run_ip_config_cmd_safe(raise_error, *cmd)
if 'spoofcheck' in item:
cmd = base_cmd + ('spoofchk', item['spoofcheck'])
run_ip_config_cmd(*cmd)
if 'state' in item:
cmd = base_cmd + ('state', item['state'])
run_ip_config_cmd(*cmd)
if 'trust' in item:
cmd = base_cmd + ('trust', item['trust'])
run_ip_config_cmd(*cmd)
if 'promisc' in item:
run_ip_config_cmd('ip', 'link', 'set', 'dev', item['name'],
'promisc', item['promisc'])
if 'driver' in item:
common.set_driverctl_override(item['pci_address'],
item['driver'])
def parse_opts(argv):
parser = argparse.ArgumentParser(
description='Configure SR-IOV PF and VF interfaces using a YAML'
' config file format.')
parser.add_argument(
'-d', '--debug',
dest="debug",
action='store_true',
help="Print debugging output.",
required=False)
parser.add_argument(
'-v', '--verbose',
dest="verbose",
action='store_true',
help="Print verbose output.",
required=False)
parser.add_argument(
'-n', '--numvfs',
dest="numvfs",
action='store',
help="Provide the numvfs for device in the format <device>:<numvfs>",
required=False)
opts = parser.parse_args(argv[1:])
return opts
def main(argv=sys.argv, main_logger=None):
opts = parse_opts(argv)
if not main_logger:
main_logger = common.configure_logger(log_file=True)
common.logger_level(main_logger, opts.verbose, opts.debug)
if opts.numvfs:
if re.match(r"^\w+:\d+$", opts.numvfs):
device_name, numvfs = opts.numvfs.split(':')
set_numvfs(device_name, int(numvfs))
else:
main_logger.error(f"Invalid arguments for --numvfs {opts.numvfs}")
return 1
else:
# Configure the PF's
configure_sriov_pf()
# Configure the VFs
configure_sriov_vf()
if __name__ == '__main__':
sys.exit(main(sys.argv))
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