641 lines
25 KiB
Python
641 lines
25 KiB
Python
#
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# Copyright (c) 2013-2016 Wind River Systems, Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# All Rights Reserved.
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#
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""" inventory pci Utilities and helper functions."""
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import glob
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import os
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import shlex
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import subprocess
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from sysinv.common import constants
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from sysinv.common import utils
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from sysinv.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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# Look for PCI class 0x0200 and 0x0280 so that we get generic ethernet
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# controllers and those that may report as "other" network controllers.
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ETHERNET_PCI_CLASSES = ['ethernet controller', 'network controller']
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# Look for other devices we may want to inventory.
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KNOWN_PCI_DEVICES = [{"vendor_id": constants.NOVA_PCI_ALIAS_QAT_PF_VENDOR,
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"device_id": constants.NOVA_PCI_ALIAS_QAT_DH895XCC_PF_DEVICE,
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"class_id": constants.NOVA_PCI_ALIAS_QAT_CLASS},
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{"vendor_id": constants.NOVA_PCI_ALIAS_QAT_PF_VENDOR,
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"device_id": constants.NOVA_PCI_ALIAS_QAT_C62X_PF_DEVICE,
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"class_id": constants.NOVA_PCI_ALIAS_QAT_CLASS},
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{"class_id": constants.NOVA_PCI_ALIAS_GPU_CLASS}]
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# PCI-SIG 0x06 bridge devices to not inventory.
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IGNORE_BRIDGE_PCI_CLASSES = ['bridge', 'isa bridge', 'host bridge']
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# PCI-SIG 0x08 generic peripheral devices to not inventory.
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IGNORE_PERIPHERAL_PCI_CLASSES = ['system peripheral', 'pic', 'dma controller',
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'iommu', 'rtc']
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# PCI-SIG 0x11 signal processing devices to not inventory.
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IGNORE_SIGNAL_PROCESSING_PCI_CLASSES = ['performance counters']
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# Blacklist of devices we do not want to inventory, because they are dealt
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# with separately (ie. Ethernet devices), or do not make sense to expose
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# to a guest.
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IGNORE_PCI_CLASSES = ETHERNET_PCI_CLASSES + IGNORE_BRIDGE_PCI_CLASSES + \
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IGNORE_PERIPHERAL_PCI_CLASSES + \
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IGNORE_SIGNAL_PROCESSING_PCI_CLASSES
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pciaddr = 0
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pclass = 1
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pvendor = 2
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pdevice = 3
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prevision = 4
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psvendor = 5
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psdevice = 6
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VALID_PORT_SPEED = ['10', '100', '1000', '10000', '40000', '100000']
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# Network device flags (from include/uapi/linux/if.h)
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IFF_UP = 1 << 0
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IFF_BROADCAST = 1 << 1
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IFF_DEBUG = 1 << 2
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IFF_LOOPBACK = 1 << 3
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IFF_POINTOPOINT = 1 << 4
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IFF_NOTRAILERS = 1 << 5
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IFF_RUNNING = 1 << 6
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IFF_NOARP = 1 << 7
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IFF_PROMISC = 1 << 8
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IFF_ALLMULTI = 1 << 9
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IFF_MASTER = 1 << 10
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IFF_SLAVE = 1 << 11
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IFF_MULTICAST = 1 << 12
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IFF_PORTSEL = 1 << 13
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IFF_AUTOMEDIA = 1 << 14
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IFF_DYNAMIC = 1 << 15
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class PCI:
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'''Class to encapsulate PCI data for System Inventory'''
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def __init__(self, pciaddr, pclass, pvendor, pdevice, prevision,
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psvendor, psdevice):
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'''Construct a Ipci object with the given values.'''
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self.pciaddr = pciaddr
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self.pclass = pclass
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self.pvendor = pvendor
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self.pdevice = pdevice
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self.prevision = prevision
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self.psvendor = psvendor
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self.psdevice = psdevice
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def __eq__(self, rhs):
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return (self.pvendor == rhs.pvendor and
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self.pdevice == rhs.pdevice)
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def __ne__(self, rhs):
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return (self.pvendor != rhs.pvendor or
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self.pdevice != rhs.pdevice)
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def __str__(self):
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return "%s [%s] [%s]" % (self.pciaddr, self.pvendor, self.pdevice)
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def __repr__(self):
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return "<PCI '%s'>" % str(self)
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class Port:
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'''Class to encapsulate PCI data for System Inventory'''
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def __init__(self, ipci, **kwargs):
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'''Construct an Iport object with the given values.'''
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self.ipci = ipci
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self.name = kwargs.get('name')
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self.mac = kwargs.get('mac')
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self.mtu = kwargs.get('mtu')
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self.speed = kwargs.get('speed')
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self.link_mode = kwargs.get('link_mode')
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self.numa_node = kwargs.get('numa_node')
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self.dev_id = kwargs.get('dev_id')
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self.sriov_totalvfs = kwargs.get('sriov_totalvfs')
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self.sriov_numvfs = kwargs.get('sriov_numvfs')
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self.sriov_vfs_pci_address = kwargs.get('sriov_vfs_pci_address')
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self.sriov_vf_driver = kwargs.get('sriov_vf_driver')
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self.driver = kwargs.get('driver')
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self.dpdksupport = kwargs.get('dpdksupport')
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def __str__(self):
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return "%s %s: [%s] [%s] [%s], [%s], [%s], [%s], [%s]" % (
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self.ipci, self.name, self.mac, self.mtu, self.speed,
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self.link_mode, self.numa_node, self.dev_id, self.dpdksupport)
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def __repr__(self):
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return "<Port '%s'>" % str(self)
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class PCIDevice:
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'''Class to encapsulate extended PCI data for System Inventory'''
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def __init__(self, pci, **kwargs):
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'''Construct a PciDevice object with the given values.'''
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self.pci = pci
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self.name = kwargs.get('name')
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self.pclass_id = kwargs.get('pclass_id')
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self.pvendor_id = kwargs.get('pvendor_id')
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self.pdevice_id = kwargs.get('pdevice_id')
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self.numa_node = kwargs.get('numa_node')
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self.sriov_totalvfs = kwargs.get('sriov_totalvfs')
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self.sriov_numvfs = kwargs.get('sriov_numvfs')
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self.sriov_vfs_pci_address = kwargs.get('sriov_vfs_pci_address')
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self.driver = kwargs.get('driver')
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self.enabled = kwargs.get('enabled')
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self.extra_info = kwargs.get('extra_info')
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def __str__(self):
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return "%s %s: [%s]" % (
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self.pci, self.numa_node, self.driver)
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def __repr__(self):
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return "<PCIDevice '%s'>" % str(self)
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class PCIOperator(object):
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'''Class to encapsulate PCI operations for System Inventory'''
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def format_lspci_output(self, device):
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# hack for now
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if device[prevision].strip() == device[pvendor].strip():
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# no revision info
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device.append(device[psvendor])
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device[psvendor] = device[prevision]
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device[prevision] = "0"
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elif len(device) <= 6: # one less entry, no revision
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LOG.debug("update psdevice length=%s" % len(device))
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device.append(device[psvendor])
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return device
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def get_pci_numa_node(self, pciaddr):
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fnuma_node = '/sys/bus/pci/devices/' + pciaddr + '/numa_node'
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try:
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with open(fnuma_node, 'r') as f:
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numa_node = f.readline().strip()
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LOG.debug("ATTR numa_node: %s " % numa_node)
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except Exception:
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LOG.debug("ATTR numa_node unknown for: %s " % pciaddr)
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numa_node = None
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return numa_node
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def get_pci_sriov_totalvfs(self, pciaddr):
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fsriov_totalvfs = '/sys/bus/pci/devices/' + pciaddr + '/sriov_totalvfs'
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try:
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with open(fsriov_totalvfs, 'r') as f:
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sriov_totalvfs = f.readline()
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LOG.debug("ATTR sriov_totalvfs: %s " % sriov_totalvfs)
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f.close()
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except Exception:
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LOG.debug("ATTR sriov_totalvfs unknown for: %s " % pciaddr)
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sriov_totalvfs = None
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pass
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return sriov_totalvfs
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def get_pci_sriov_numvfs(self, pciaddr):
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fsriov_numvfs = '/sys/bus/pci/devices/' + pciaddr + '/sriov_numvfs'
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try:
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with open(fsriov_numvfs, 'r') as f:
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sriov_numvfs = f.readline()
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LOG.debug("ATTR sriov_numvfs: %s " % sriov_numvfs)
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f.close()
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except Exception:
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LOG.debug("ATTR sriov_numvfs unknown for: %s " % pciaddr)
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sriov_numvfs = 0
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pass
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LOG.debug("sriov_numvfs: %s" % sriov_numvfs)
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return sriov_numvfs
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def get_pci_sriov_vfs_pci_address(self, pciaddr, sriov_numvfs):
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dirpcidev = '/sys/bus/pci/devices/' + pciaddr
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sriov_vfs_pci_address = []
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i = 0
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while i < int(sriov_numvfs):
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lvf = dirpcidev + '/virtfn' + str(i)
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try:
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sriov_vfs_pci_address.append(os.path.basename(os.readlink(lvf)))
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except Exception:
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LOG.warning("virtfn link %s non-existent (sriov_numvfs=%s)"
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% (lvf, sriov_numvfs))
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pass
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i += 1
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LOG.debug("sriov_vfs_pci_address: %s" % sriov_vfs_pci_address)
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return sriov_vfs_pci_address
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def get_pci_sriov_vf_driver_name(self, pciaddr, sriov_vfs_pci_address):
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vf_driver = None
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for addr in sriov_vfs_pci_address:
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try:
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with open(os.devnull, "w") as fnull:
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output = subprocess.check_output(['lspci', '-vmmks', addr],
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stderr=fnull)
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except Exception as e:
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LOG.error("Error getting PCI data for SR-IOV "
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"VF address %s: %s", addr, e)
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continue
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for line in output.split('\n'):
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pci_attr = shlex.split(line.strip())
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if (pci_attr and len(pci_attr) == 2 and 'Module' in pci_attr[0]):
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vf_driver = pci_attr[1]
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break
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# All VFs have the same driver per device.
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if vf_driver:
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break
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return vf_driver
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def get_pci_driver_name(self, pciaddr):
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ddriver = '/sys/bus/pci/devices/' + pciaddr + '/driver/module/drivers'
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try:
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drivers = [
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os.path.basename(os.readlink(ddriver + '/' + d)) for d in os.listdir(ddriver)
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]
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driver = str(','.join(str(d) for d in drivers))
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except Exception:
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LOG.debug("ATTR driver unknown for: %s " % pciaddr)
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driver = None
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pass
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LOG.debug("driver: %s" % driver)
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return driver
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def pci_devices_get(self):
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p = subprocess.Popen(["lspci", "-Dm"], stdout=subprocess.PIPE)
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pci_devices = []
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for line in p.stdout:
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pci_device = shlex.split(line.strip())
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pci_device = self.format_lspci_output(pci_device)
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if any(x in pci_device[pclass].lower() for x in
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IGNORE_PCI_CLASSES):
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continue
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dirpcidev = '/sys/bus/pci/devices/'
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physfn = dirpcidev + pci_device[pciaddr] + '/physfn'
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if not os.path.isdir(physfn):
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# Do not report VFs
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pci_devices.append(PCI(pci_device[pciaddr],
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pci_device[pclass],
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pci_device[pvendor],
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pci_device[pdevice],
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pci_device[prevision],
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pci_device[psvendor],
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pci_device[psdevice]))
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p.wait()
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return pci_devices
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def inics_get(self):
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p = subprocess.Popen(["lspci", "-Dm"], stdout=subprocess.PIPE)
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pci_inics = []
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for line in p.stdout:
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inic = shlex.split(line.strip())
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if any(x in inic[pclass].lower() for x in ETHERNET_PCI_CLASSES):
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# hack for now
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if inic[prevision].strip() == inic[pvendor].strip():
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# no revision info
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inic.append(inic[psvendor])
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inic[psvendor] = inic[prevision]
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inic[prevision] = "0"
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elif len(inic) <= 6: # one less entry, no revision
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LOG.debug("update psdevice length=%s" % len(inic))
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inic.append(inic[psvendor])
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dirpcidev = '/sys/bus/pci/devices/'
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physfn = dirpcidev + inic[pciaddr] + '/physfn'
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if os.path.isdir(physfn):
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# Do not report VFs
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continue
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pci_inics.append(PCI(inic[pciaddr], inic[pclass],
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inic[pvendor], inic[pdevice],
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inic[prevision], inic[psvendor],
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inic[psdevice]))
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p.wait()
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return pci_inics
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def pci_get_enabled_attr(self, class_id, vendor_id, product_id):
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for known_device in KNOWN_PCI_DEVICES:
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if (class_id == known_device.get("class_id", None) or
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(vendor_id == known_device.get("vendor_id", None) and
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product_id == known_device.get("device_id", None))):
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return True
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return False
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def pci_get_device_attrs(self, pciaddr):
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''' For this pciaddr, build a list of device attributes '''
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pci_attrs_array = []
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dirpcidev = '/sys/bus/pci/devices/'
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pciaddrs = os.listdir(dirpcidev)
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for a in pciaddrs:
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if ((a == pciaddr) or (a == ("0000:" + pciaddr))):
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LOG.debug("Found device pci bus: %s " % a)
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dirpcideva = dirpcidev + a
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numa_node = self.get_pci_numa_node(a)
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sriov_totalvfs = self.get_pci_sriov_totalvfs(a)
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sriov_numvfs = self.get_pci_sriov_numvfs(a)
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sriov_vfs_pci_address = self.get_pci_sriov_vfs_pci_address(a, sriov_numvfs)
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driver = self.get_pci_driver_name(a)
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fclass = dirpcideva + '/class'
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fvendor = dirpcideva + '/vendor'
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fdevice = dirpcideva + '/device'
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try:
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with open(fvendor, 'r') as f:
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pvendor_id = f.readline().strip('0x').strip()
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except Exception:
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LOG.debug("ATTR vendor unknown for: %s " % a)
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pvendor_id = None
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try:
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with open(fdevice, 'r') as f:
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pdevice_id = f.readline().replace('0x', '').strip()
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except Exception:
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LOG.debug("ATTR device unknown for: %s " % a)
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pdevice_id = None
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try:
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with open(fclass, 'r') as f:
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pclass_id = f.readline().replace('0x', '').strip()
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except Exception:
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LOG.debug("ATTR class unknown for: %s " % a)
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pclass_id = None
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name = "pci_" + a.replace(':', '_').replace('.', '_')
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attrs = {
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"name": name,
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"pci_address": a,
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"pclass_id": pclass_id,
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"pvendor_id": pvendor_id,
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"pdevice_id": pdevice_id,
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"numa_node": numa_node,
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"sriov_totalvfs": sriov_totalvfs,
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"sriov_numvfs": sriov_numvfs,
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"sriov_vfs_pci_address":
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','.join(str(x) for x in sriov_vfs_pci_address),
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"driver": driver,
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"enabled": self.pci_get_enabled_attr(pclass_id,
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pvendor_id, pdevice_id),
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}
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pci_attrs_array.append(attrs)
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return pci_attrs_array
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def get_pci_net_directory(self, pciaddr):
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device_directory = '/sys/bus/pci/devices/' + pciaddr
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# Look for the standard device 'net' directory
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net_directory = device_directory + '/net/'
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if os.path.exists(net_directory):
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return net_directory
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# Otherwise check whether this is a virtio based device
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net_pattern = device_directory + '/virtio*/net/'
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results = glob.glob(net_pattern)
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if not results:
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return None
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if len(results) > 1:
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LOG.warning("PCI device {} has multiple virtio "
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"sub-directories".format(pciaddr))
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return results[0]
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def _read_flags(self, fflags):
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try:
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with open(fflags, 'r') as f:
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hex_str = f.readline().rstrip()
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flags = int(hex_str, 16)
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except Exception:
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flags = None
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return flags
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def _get_netdev_flags(self, dirpcinet, pci):
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fflags = dirpcinet + pci + '/flags'
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return self._read_flags(fflags)
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def pci_get_net_flags(self, name):
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fflags = '/sys/class/net/' + name + '/flags'
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return self._read_flags(fflags)
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def pci_get_net_names(self):
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'''build a list of network device names.'''
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names = []
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for name in os.listdir('/sys/class/net/'):
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if os.path.isdir('/sys/class/net/' + name):
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names.append(name)
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return names
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def pci_get_net_attrs(self, pciaddr):
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''' For this pciaddr, build a list of network attributes per port '''
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pci_attrs_array = []
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dirpcidev = '/sys/bus/pci/devices/'
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pciaddrs = os.listdir(dirpcidev)
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for a in pciaddrs:
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if ((a == pciaddr) or (a == ("0000:" + pciaddr))):
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# Look inside net expect to find address,speed,mtu etc. info
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# There may be more than 1 net device for this NIC.
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LOG.debug("Found NIC pci bus: %s " % a)
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dirpcideva = dirpcidev + a
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numa_node = self.get_pci_numa_node(a)
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sriov_totalvfs = self.get_pci_sriov_totalvfs(a)
|
|
sriov_numvfs = self.get_pci_sriov_numvfs(a)
|
|
sriov_vfs_pci_address = self.get_pci_sriov_vfs_pci_address(a, sriov_numvfs)
|
|
sriov_vf_driver = self.get_pci_sriov_vf_driver_name(a, sriov_vfs_pci_address)
|
|
driver = self.get_pci_driver_name(a)
|
|
|
|
# Determine DPDK support
|
|
dpdksupport = False
|
|
fvendor = dirpcideva + '/vendor'
|
|
fdevice = dirpcideva + '/device'
|
|
try:
|
|
with open(fvendor, 'r') as f:
|
|
vendor = f.readline().strip()
|
|
except Exception:
|
|
LOG.debug("ATTR vendor unknown for: %s " % a)
|
|
vendor = None
|
|
|
|
try:
|
|
with open(fdevice, 'r') as f:
|
|
device = f.readline().strip()
|
|
except Exception:
|
|
LOG.debug("ATTR device unknown for: %s " % a)
|
|
device = None
|
|
|
|
try:
|
|
with open(os.devnull, "w") as fnull:
|
|
subprocess.check_call(["query_pci_id", "-v " + str(vendor),
|
|
"-d " + str(device)],
|
|
stdout=fnull, stderr=fnull)
|
|
dpdksupport = True
|
|
LOG.debug("DPDK does support NIC "
|
|
"(vendor: %s device: %s)",
|
|
vendor, device)
|
|
except subprocess.CalledProcessError as e:
|
|
dpdksupport = False
|
|
if e.returncode == 1:
|
|
# NIC is not supprted
|
|
LOG.debug("DPDK does not support NIC "
|
|
"(vendor: %s device: %s)",
|
|
vendor, device)
|
|
else:
|
|
# command failed, default to DPDK support to False
|
|
LOG.info("Could not determine DPDK support for "
|
|
"NIC (vendor %s device: %s), defaulting "
|
|
"to False", vendor, device)
|
|
|
|
# determine the net directory for this device
|
|
dirpcinet = self.get_pci_net_directory(a)
|
|
if dirpcinet is None:
|
|
LOG.warning("no /net for PCI device: %s " % a)
|
|
continue # go to next PCI device
|
|
|
|
# determine which netdevs are associated to this device
|
|
netdevs = os.listdir(dirpcinet)
|
|
for n in netdevs:
|
|
mac = None
|
|
fmac = dirpcinet + n + '/' + "address"
|
|
fmaster = dirpcinet + n + '/' + "master"
|
|
# if a port is a member of a bond the port MAC address
|
|
# must be retrieved from /proc/net/bonding/<bond_name>
|
|
if os.path.exists(fmaster):
|
|
dirmaster = os.path.realpath(fmaster)
|
|
master_name = os.path.basename(dirmaster)
|
|
procnetbonding = '/proc/net/bonding/' + master_name
|
|
found_interface = False
|
|
|
|
try:
|
|
with open(procnetbonding, 'r') as f:
|
|
for line in f:
|
|
if 'Slave Interface: ' + n in line:
|
|
found_interface = True
|
|
if found_interface and 'Permanent HW addr:' in line:
|
|
mac = line.split(': ')[1].rstrip()
|
|
mac = utils.validate_and_normalize_mac(mac)
|
|
break
|
|
if not mac:
|
|
LOG.info("ATTR mac could not be determined "
|
|
"for slave interface %s" % n)
|
|
except Exception:
|
|
LOG.info("ATTR mac could not be determined, "
|
|
"could not open %s" % procnetbonding)
|
|
else:
|
|
try:
|
|
with open(fmac, 'r') as f:
|
|
mac = f.readline().rstrip()
|
|
mac = utils.validate_and_normalize_mac(mac)
|
|
except Exception:
|
|
LOG.info("ATTR mac unknown for: %s " % n)
|
|
|
|
fmtu = dirpcinet + n + '/' + "mtu"
|
|
try:
|
|
with open(fmtu, 'r') as f:
|
|
mtu = f.readline().rstrip()
|
|
except Exception:
|
|
LOG.debug("ATTR mtu unknown for: %s " % n)
|
|
mtu = None
|
|
|
|
# Check the administrative state before reading the speed
|
|
flags = self._get_netdev_flags(dirpcinet, n)
|
|
|
|
# If administrative state is down, bring it up momentarily
|
|
if not(flags & IFF_UP):
|
|
LOG.warning("Enabling device %s to query link speed" % n)
|
|
cmd = 'ip link set dev %s up' % n
|
|
subprocess.Popen(cmd, stdout=subprocess.PIPE,
|
|
shell=True)
|
|
# Read the speed
|
|
fspeed = dirpcinet + n + '/' + "speed"
|
|
try:
|
|
with open(fspeed, 'r') as f:
|
|
speed = f.readline().rstrip()
|
|
if speed not in VALID_PORT_SPEED:
|
|
LOG.error("Invalid port speed = %s for %s " %
|
|
(speed, n))
|
|
speed = None
|
|
except Exception:
|
|
LOG.warning("ATTR speed unknown for: %s (flags: %s)" % (n, hex(flags)))
|
|
speed = None
|
|
# If the administrative state was down, take it back down
|
|
if not(flags & IFF_UP):
|
|
LOG.warning("Disabling device %s after querying link speed" % n)
|
|
cmd = 'ip link set dev %s down' % n
|
|
subprocess.Popen(cmd, stdout=subprocess.PIPE,
|
|
shell=True)
|
|
|
|
flink_mode = dirpcinet + n + '/' + "link_mode"
|
|
try:
|
|
with open(flink_mode, 'r') as f:
|
|
link_mode = f.readline().rstrip()
|
|
except Exception:
|
|
LOG.debug("ATTR link_mode unknown for: %s " % n)
|
|
link_mode = None
|
|
|
|
fdevport = dirpcinet + n + '/' + "dev_port"
|
|
try:
|
|
with open(fdevport, 'r') as f:
|
|
dev_port = int(f.readline().rstrip(), 0)
|
|
except Exception:
|
|
LOG.debug("ATTR dev_port unknown for: %s " % n)
|
|
# Kernel versions older than 3.15 used dev_id
|
|
# (incorrectly) to identify the network devices,
|
|
# therefore support the fallback if dev_port is not
|
|
# available
|
|
try:
|
|
fdevid = dirpcinet + n + '/' + "dev_id"
|
|
with open(fdevid, 'r') as f:
|
|
dev_port = int(f.readline().rstrip(), 0)
|
|
except Exception:
|
|
LOG.debug("ATTR dev_id unknown for: %s " % n)
|
|
dev_port = 0
|
|
|
|
attrs = {
|
|
"name": n,
|
|
"numa_node": numa_node,
|
|
"sriov_totalvfs": sriov_totalvfs,
|
|
"sriov_numvfs": sriov_numvfs,
|
|
"sriov_vfs_pci_address":
|
|
','.join(str(x) for x in sriov_vfs_pci_address),
|
|
"sriov_vf_driver": sriov_vf_driver,
|
|
"driver": driver,
|
|
"pci_address": a,
|
|
"mac": mac,
|
|
"mtu": mtu,
|
|
"speed": speed,
|
|
"link_mode": link_mode,
|
|
"dev_id": dev_port,
|
|
"dpdksupport": dpdksupport
|
|
}
|
|
|
|
pci_attrs_array.append(attrs)
|
|
|
|
return pci_attrs_array
|