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    <h1>Node devices XML format</h1>

    <ul id="toc"></ul>

    <h2><a id="NodedevAttributes">Node Device XML</a></h2>

    <p>
      There are several libvirt functions, all with the
      prefix <code>virNodeDevice</code>, which deal with management of
      host devices that can be handed to guests via passthrough as
      &lt;hostdev&gt; elements
      in <a href="formatdomain.html#elementsHostDev">the domain XML</a>.
      These devices are represented as a hierarchy, where a device on
      a bus has a parent of the bus controller device; the root of the
      hierarchy is the node named "computer".
    </p>

    <p>
      When represented in XML, a node device uses the
      top-level <code>device</code> element, with the following
      elements present according to the type of device:
    </p>
    <dl>
      <dt><code>name</code></dt>
      <dd>The name for this device.  The name will be alphanumeric,
        with words separated by underscore.  For many devices, the
        name is just the bus type and address, as in
        "pci_0000_00_02_1" or "usb_1_5_3", but some devices are able
        to provide more specific names, such as
        "net_eth1_00_27_13_6a_fe_00". This is a read-only field that is
        reported by the device driver. If this element is set when defining a
        new device, it will be ignored.

      </dd>
      <dt><code>path</code></dt>
      <dd>
        Fully qualified sysfs path to the device. This is a read-only field
        that is reported by the device driver. If this element is set when
        defining a new device, it will be ignored.
      </dd>
      <dt><code>parent</code></dt>
      <dd>
        This element identifies the parent node in the device hierarchy. The
        value of the element will correspond with the device parent's
        <code>name</code> element or <code>computer</code> if the device does
        not have any parent.
      </dd>
      <dt><code>driver</code></dt>
      <dd>
        This elements reports the driver in use for this device. The presence
        of this element in the output XML depends on whether the underlying
        device manager (most likely udev) exposes information about the
        driver.
      </dd>
      <dt><code>devnode</code></dt>
      <dd>This node appears for each associated <code>/dev</code>
      special file. A mandatory attribute <code>type</code> specify
      the kind of file path, which may be either <code>dev</code> for
      the main name, or <code>link</code> for additional symlinks.
      </dd>
      <dt><code>capability</code></dt>
      <dd>This node appears for each capability that libvirt
        associates with a node.  A mandatory
        attribute <code>type</code> lists which category the device
        belongs to, and controls which further subelements will be
        present to describe the node:
        <dl>
          <dt><code>system</code></dt>
          <dd>Describes the overall host.  Sub-elements include:
            <dl>
              <dt><code>product</code></dt>
              <dd>If present, a simple text string giving the product
                name of the system.</dd>
              <dt><code>hardware</code></dt>
              <dd>Describes the hardware of the system, including
                sub-elements for <code>vendor</code>, <code>version</code>,
                <code>serial</code>, and <code>uuid</code>.</dd>
              <dt><code>firmware</code></dt>
              <dd>Describes the firmware of the system, including
                sub-elements for <code>vendor</code>, <code>version</code>,
                and <code>release_date</code>.</dd>
            </dl>
          </dd>
          <dt><code>pci</code></dt>
          <dd>Describes a device on the host's PCI bus.  Sub-elements
            include:
            <dl>
              <dt><code>class</code></dt>
              <dd>Optional element for combined class, subclass and
                programming interface codes as 6-digit hexadecimal number.
                <span class="since">Since 5.2.0</span></dd>
              <dt><code>domain</code></dt>
              <dd>Which domain the device belongs to.</dd>
              <dt><code>bus</code></dt>
              <dd>Which bus within the domain.</dd>
              <dt><code>slot</code></dt>
              <dd>Which slot within the bus.</dd>
              <dt><code>function</code></dt>
              <dd>Which function within the slot.</dd>
              <dt><code>product</code></dt>
              <dd>Product details from the device ROM, including an
                attribute <code>id</code> with the hexadecimal product
                id, and an optional text description of that id.</dd>
              <dt><code>vendor</code></dt>
              <dd>Vendor details from the device ROM, including an
                attribute <code>id</code> with the hexadecimal vendor
                id, and an optional text name of that vendor.</dd>
              <dt><code>iommuGroup</code></dt>
              <dd>
                This optional element describes the "IOMMU group" this
                device belongs to. If the element exists, it has a
                mandatory <code>number</code> attribute which tells
                the group number used for management of the group (all
                devices in group "n" will be found in
                "/sys/kernel/iommu_groups/n"). It will also have a
                list of <code>address</code> subelements, each
                containing the PCI address of a device in the same
                group. The toplevel device will itself be included in
                this list.
              </dd>
              <dt><code>capability</code></dt>
              <dd>
                This optional element can occur multiple times. If it
                exists, it has a mandatory <code>type</code> attribute
                which will be set to:
                <dl>
                  <dt><code>phys_function</code></dt>
                  <dd>
                    That means there will be a single <code>address</code>
                    subelement which contains the PCI address of the SRIOV
                    Physical Function (PF) that is the parent of this device
                    (and this device is, by implication, an SRIOV Virtual
                    Function (VF)).
                  </dd>
                  <dt><code>virt_functions</code></dt>
                  <dd>
                    In this case this device is an SRIOV PF, and the capability
                    element will have a list of <code>address</code>
                    subelements, one for each VF on this PF. If the host system
                    supports reporting it (via the "sriov_totalvfs" file in the
                    device's sysfs directory) the capability element will also
                    have an attribute named <code>maxCount</code> which is the
                    maximum number of SRIOV VFs supported by this device, which
                    could be higher than the number of VFs that are currently
                    active <span class="since">since 1.3.0</span>; in this case,
                    even if there are currently no active VFs the
                    virtual_functions capabililty will still be shown.
                  </dd>
                  <dt><code>pci-bridge</code> or <code>cardbus-bridge</code></dt>
                  <dd>
                    This shows merely that the lower 7 bits of PCI header type
                    have either value of 1 or 2 respectively.  Usually this
                    means such device cannot be used for PCI passthrough.
                    <span class="since">Since 1.3.3</span>
                  </dd>
                  <dt><code><a id="MDEVTypesCapPCI">mdev_types</a></code></dt>
                  <dd>
                    This device is capable of creating mediated devices.
                    The sub-elements are summarized in
                    <a href="#MDEVTypesCap">mdev_types capability</a>.
                  </dd>
                  <dt><code><a id="VPDCapPCI">vpd</a></code></dt>
                  <dd>
                    This device exposes a VPD PCI/PCIe capability.
                    The sub-elements are summarized in
                    <a href="#VPDCap">vpd capability</a>.
                  </dd>
                </dl>
              </dd>

              <dt><code>numa</code></dt>
              <dd>
                This optional element contains information on the PCI device
                with respect to NUMA. For example, the optional
                <code>node</code> attribute tells which NUMA node is the PCI
                device associated with.
              </dd>
              <dt><code>pci-express</code></dt>
              <dd>
              This optional element contains information on PCI Express part of
              the device. For example, it can contain a child element
              <code>link</code> which addresses the PCI Express device's link.
              While a device has its own capabilities
              (<code>validity='cap'</code>), the actual run time capabilities
              are negotiated on the device initialization
              (<code>validity='sta'</code>). The <code>link</code> element then
              contains three attributes: <code>port</code> which says in which
              port is the device plugged in, <code>speed</code> (in
              GigaTransfers per second) and <code>width</code> for the number
              of lanes used. Since the port can't be negotiated, it's not
              exposed in <code>./pci-express/link/[@validity='sta']</code>.
              </dd>
            </dl>
          </dd>
          <dt><code>usb_device</code></dt>
          <dd>Describes a device on the host's USB bus, based on its
            location within the bus.  Sub-elements include:
            <dl>
              <dt><code>bus</code></dt>
              <dd>Which bus the device belongs to.</dd>
              <dt><code>device</code></dt>
              <dd>Which device within the bus.</dd>
              <dt><code>product</code></dt>
              <dd>Product details from the device ROM, including an
                attribute <code>id</code> with the hexadecimal product
                id, and an optional text description of that id.</dd>
              <dt><code>vendor</code></dt>
              <dd>Vendor details from the device ROM, including an
                attribute <code>id</code> with the hexadecimal vendor
                id, and an optional text name of that vendor.</dd>
            </dl>
          </dd>
          <dt><code>usb</code></dt>
          <dd>Describes a USB device, based on its advertised driver
            interface.  Sub-elements include:
            <dl>
              <dt><code>number</code></dt>
              <dd>The device number.</dd>
              <dt><code>class</code></dt>
              <dd>The device class.</dd>
              <dt><code>subclass</code></dt>
              <dd>The device subclass.</dd>
              <dt><code>protocol</code></dt>
              <dd>The device protocol.</dd>
              <dt><code>description</code></dt>
              <dd>If present, a description of the device.</dd>
            </dl>
          </dd>
          <dt><code>net</code></dt>
          <dd>Describes a device capable for use as a network
            interface.  Sub-elements include:
            <dl>
              <dt><code>interface</code></dt>
              <dd>The interface name tied to this device.</dd>
              <dt><code>address</code></dt>
              <dd>If present, the MAC address of the device.</dd>
              <dt><code>link</code></dt>
              <dd>Optional to reflect the status of the link. It has
                two optional attributes: <code>speed</code> in Mbits per
                second and <code>state</code> to tell the state of the
                link. So far, the whole element is just for output,
                not setting.
              </dd>
              <dt><code>feature</code></dt>
              <dd>If present, the hw offloads supported by this network
                interface. Possible features are:
                <dl>
                    <dt><code>rx</code></dt><dd>rx-checksumming</dd>
                    <dt><code>tx</code></dt><dd>tx-checksumming</dd>
                    <dt><code>sg</code></dt><dd>scatter-gather</dd>
                    <dt><code>tso</code></dt><dd>tcp-segmentation-offload</dd>
                    <dt><code>ufo</code></dt><dd>udp-fragmentation-offload</dd>
                    <dt><code>gso</code></dt><dd>generic-segmentation-offload</dd>
                    <dt><code>gro</code></dt><dd>generic-receive-offload</dd>
                    <dt><code>lro</code></dt><dd>large-receive-offload</dd>
                    <dt><code>rxvlan</code></dt><dd>rx-vlan-offload</dd>
                    <dt><code>txvlan</code></dt><dd>tx-vlan-offload</dd>
                    <dt><code>ntuple</code></dt><dd>ntuple-filters</dd>
                    <dt><code>rxhash</code></dt><dd>receive-hashing</dd>
                    <dt><code>rdma</code></dt><dd>remote-direct-memory-access</dd>
                    <dt><code>txudptnl</code></dt><dd>tx-udp-tunnel-segmentation</dd>
                    <dt><code>switchdev</code></dt><dd>kernel-forward-plane-offload</dd>
                </dl>
              </dd>
              <dt><code>capability</code></dt>
              <dd>A network protocol exposed by the device, where the
                attribute <code>type</code> can be "80203" for IEEE
                802.3, or "80211" for various flavors of IEEE 802.11.
              </dd>
            </dl>
          </dd>
          <dt><code>scsi_host</code></dt>
          <dd>Describes a SCSI host device.  Sub-elements include:
            <dl>
              <dt><code>host</code></dt>
              <dd>The SCSI host number.</dd>
              <dt><code>unique_id</code></dt>
              <dd>On input, this optionally provides the value from the
                'unique_id' file found in the scsi_host's directory. To
                view the values of all 'unique_id' files, use <code>find -H
                /sys/class/scsi_host/host{0..9}/unique_id |
                xargs grep '[0-9]'</code>. On output, if the unique_id
                file exists, the value from the file will be displayed.
                This can be used in order to help uniquely identify the
                scsi_host adapter in a <a href="formatstorage.html">
                Storage Pool</a>. <span class="since">Since 1.2.7</span>
              </dd>
              <dt><code>capability</code></dt>
              <dd>Current capabilities include "vports_ops" (indicates
                vport operations are supported) and "fc_host". "vport_ops"
                could contain two optional sub-elements: <code>vports</code>,
                and <code>max_vports</code>. <code>vports</code> shows the
                number of vport in use. <code>max_vports</code> shows the
                maximum vports the HBA supports. "fc_host" implies following
                sub-elements: <code>wwnn</code>, <code>wwpn</code>, and
                optionally <code>fabric_wwn</code>.
              </dd>
            </dl>
          </dd>
          <dt><code>scsi</code></dt>
          <dd>Describes a SCSI device.  Sub-elements include:
            <dl>
              <dt><code>host</code></dt>
              <dd>The SCSI host containing the device.</dd>
              <dt><code>bus</code></dt>
              <dd>The bus within the host.</dd>
              <dt><code>target</code></dt>
              <dd>The target within the bus.</dd>
              <dt><code>lun</code></dt>
              <dd>The lun within the target.</dd>
              <dt><code>type</code></dt>
              <dd>The type of SCSI device.</dd>
            </dl>
          </dd>
          <dt><code>storage</code></dt>
          <dd>Describes a device usable for storage.  Sub-elements
            include:
            <dl>
              <dt><code>block</code></dt>
              <dd>A block device file name that accesses the storage
                present on the device.</dd>
              <dt><code>bus</code></dt>
              <dd>If present, the name of the bus the device is found
                on.</dd>
              <dt><code>drive_type</code></dt>
              <dd>The type of the drive, such as "disk" or
                "cdrom".</dd>
              <dt><code>model</code></dt>
              <dd>Any model information available from the
                device.</dd>
              <dt><code>vendor</code></dt>
              <dd>Any vendor information available from the
                device.</dd>
              <dt><code>serial</code></dt>
              <dd>Any serial number information available from the
                device.</dd>
              <dt><code>size</code></dt>
              <dd>For fixed-size storage, the amount of storage
                available.</dd>
              <dt><code>capability</code></dt>
              <dd>If present, an additional capability is listed via
                the attribute <code>type</code>.  Current capabilities
                include "hotpluggable" and "removable", with the
                latter implying the following
                sub-elements: <code>media_available</code> (0 or
                1), <code>media_size</code>,
                and <code>media_label</code>.</dd>
            </dl>
          </dd>
          <dt><code>drm</code></dt>
          <dd>Describes a Direct Rendering Manager (DRM) device.
          Sub-elements include:
            <dl>
              <dt><code>type</code></dt>
              <dd>The type of DRM device. Could be
              <code>primary</code>, <code>control</code> or
              <code>render</code>.</dd>
            </dl>
          </dd>
          <dt><a id="mdev"><code>mdev</code></a></dt>
          <dd>Describes a mediated device.  <span class="since">Since
            3.4.0</span> Sub-elements include:
            <dl>
              <dt><code>type</code></dt>
              <dd>
                Describes a mediated device type which acts as an abstract
                template defining a resource allocation for instances
                of this device type. The element has one attribute
                <code>id</code> which holds an official vendor-supplied
                identifier for the type.
              </dd>
              <dt><code>iommuGroup</code></dt>
              <dd>
                This element supports a single attribute <code>number</code>
                which holds the IOMMU group number to which the mediated device
                belongs. This is a read-only field that is reported by the
                device driver.
              </dd>
              <dt><code>attr</code></dt>
              <dd>
                This optional element can occur multiple times. It represents a
                vendor-specific attribute that is used to configure this
                mediated device. It has two required attributes:
                <code>name</code> and <code>value</code>. Note that the order
                in which attributes are set may be important for some devices.
                The order that they appear in the xml definition determines the
                order that they will be written to the device.
              </dd>
              <dt><code>uuid</code></dt>
              <dd>
                This element represents the UUID of the mediated device.
              </dd>
            </dl>
          </dd>
          <dt><code>ccw</code></dt>
          <dd>Describes a Command Channel Word (CCW) device commonly found on
          the S390 architecture. Sub-elements include:
            <dl>
              <dt><code>cssid</code></dt>
              <dd>The channel subsystem identifier.</dd>
              <dt><code>ssid</code></dt>
              <dd>The subchannel-set identifier.</dd>
              <dt><code>devno</code></dt>
              <dd>The device number.</dd>
            </dl>
          </dd>
          <dt><code>css</code></dt>
          <dd>Describes a subchannel in the Channel SubSystem (CSS) commonly
          found on the S390 architecture. Sub-elements include:
            <dl>
              <dt><code>cssid</code></dt>
              <dd>The channel subsystem identifier.</dd>
              <dt><code>ssid</code></dt>
              <dd>The subchannel-set identifier.</dd>
              <dt><code>devno</code></dt>
              <dd>The subchannel number.</dd>
              <dt><code>capability</code></dt>
              <dd>
                This optional element can occur multiple times. If it
                exists, it has a mandatory <code>type</code> attribute
                which will be set to:
                <dl>
                  <dt><code><a id="MDEVTypesCapCSS">mdev_types</a></code></dt>
                  <dd>
                    <span class="since">Since 6.10.0</span>
                    This device is capable of creating mediated devices.
                    The sub-elements are summarized in
                    <a href="#MDevTypesCap">mdev_types capability</a>.
                  </dd>
                </dl>
              </dd>
            </dl>
          </dd>
          <dt><code>vdpa</code></dt>
          <dd>Describes a virtual datapath acceleration (vDPA) network device.
          <span class="since">Since 6.9.0</span>. Sub-elements include:
            <dl>
              <dt><code>chardev</code></dt>
              <dd>The path to the character device that is used to access the
                  device.</dd>
            </dl>
          </dd>
          <dt><code>ap_card</code></dt>
          <dd>Describes the Adjunct Processor (AP) Card device on a S390 host.
              Sub-elements include:
            <dl>
              <dt><code>ap-adapter</code></dt>
              <dd>AP Card identifier.</dd>
            </dl>
          </dd>
          <dt><code>ap_queue</code></dt>
          <dd>Describes the AP queue on a s390 host. An AP queue is
              an AP domain on an AP adapter which is specified by an
              adapter identifier and a domain identifier.
              Sub-elements include:
            <dl>
              <dt><code>ap-adapter</code></dt>
              <dd>The ap-adapter of an AP queue identifies the AP
                  card to which this AP queue belongs.</dd>
              <dt><code>ap-domain</code></dt>
              <dd>The ap-domain of an AP queue identifies the AP
                  domain to which this AP queue belongs.</dd>
              <dd>AP Queue identifier.</dd>
            </dl>
          </dd>
          <dt><code>ap_matrix</code></dt>
          <dd>Describes an AP Matrix device on a S390 architecture providing
              cryptographic host resources usable for virtualization.
              Sub-elements include:
            <dl>
              <dt><code>capability</code></dt>
              <dd>
                This optional element can occur multiple times. If it
                exists, it has a mandatory <code>type</code> attribute
                which will be set to:
                <dl>
                  <dt><code><a id="MDEVTypesCapAP">mdev_types</a></code></dt>
                  <dd>
                    <span class="since">Since 6.10.0</span>
                    This device is capable of creating mediated devices.
                    The sub-elements are summarized in
                    <a href="#MDEVTypesCap">mdev_types capability</a>.
                  </dd>
                </dl>
              </dd>
            </dl>
          </dd>
        </dl>
      </dd>
    </dl>

    <h3><a id="MDEVTypesCap">mdev_types capability</a></h3>

    <p>
      <a href="#MDEVTypesCapPCI">PCI</a>, <a href="#MDEVTypesCapCSS">CSS</a>
      and <a href="#MDEVTypesCapAP">AP Matrix</a>
      devices can be capable of creating mediated devices.
      If they indeed are capable, then the parent <code>capability</code>
      element for <code>mdev_types</code> type will contain a list of
      <code>type</code> elements, which list all mdev types supported
      on the physical device. <span class="since">Since 3.4.0</span>
      Each <code>type</code> element has a single <code>id</code>
      attribute that holds an official vendor-supplied identifier
      for the type. It supports the following sub-elements:
      <dl>
        <dt><code>name</code></dt>
        <dd>
          The <code>name</code> element holds a vendor-supplied
          code name for the given mediated device type. This is
          an optional element.
        </dd>
        <dt><code>deviceAPI</code></dt>
        <dd>
          The value of this element describes how an instance of
          the given type will be presented to the guest by the
          VFIO framework.
        </dd>
        <dt><code>availableInstances</code></dt>
        <dd>
          This element reports the current state of resource
          allocation. In other words, how many instances of the
          given type can still be successfully created on the
          physical device.
        </dd>
      </dl>
    </p>

    <h3><a id="VPDCap">vpd capability</a></h3>

    <p>
      <a href="#VPDCapPCI">PCI</a> devices can expose a VPD capability which
      is optional per PCI Local Bus 2.2+ and PCIe 4.0+ specifications. If
      the VPD capability is present, then the parent <code>capability</code>
      element with the <code>vpd</code> type will contain a <code>name</code>
      element (containing a manufacturer-provided device name) and optionally
      one or two <code>fields</code> elements with an <code>access</code>
      attribute set to <code>readonly</code> or <code>readwrite</code>.
    </p>
    <p>
      The read-only <code>fields</code> element may contain the following elements:
      <dl>
        <dt><code>change_level</code></dt>
        <dd>An engineering change level for this add-in card.</dd>
        <dt><code>manufacture_id</code></dt>
        <dd>An extension to the Vendor ID (or Subsystem Vendor ID) in the
          Configuration Space header which allows vendors the flexibility to identify
          an additional level of detail pertaining to the sourcing of a PCI device.</dd>
        <dt><code>part_number</code></dt>
        <dd>An extension to the Device ID (or Subsystem ID) in the Configuration
          Space header specifying a part number of an add-in card.</dd>
        <dt><code>serial_number</code></dt>
        <dd>A unique add-in card Serial Number.</dd>
        <dt><code>vendor_field</code></dt>
        <dd>Zero or many of those elements with an <code>index</code> attribute
          (since-character upper-case ASCII alphanumeric indexes). Contents will vary
          depending on a vendor.</dd>
      </dl>
      All fields are optional and are not guaranteed to be present for a generic PCI device.
    </p>
    <p>
      The read-write <code>fields</code> element may contain the following elements:
      <dl>
        <dt><code>asset_tag</code></dt>
        <dd>A system asset identifier provided by the system owner.</dd>
        <dt><code>vendor_field</code></dt>
        <dd>Zero or many of those elements with an <code>index</code> attribute
          (since-character upper-case ASCII alphanumeric indexes). Contents will vary depending
          on a vendor.</dd>
        <dt><code>system_field</code></dt>
        <dd>Zero or many of those elements with an <code>index</code> attribute (since-character
          upper-case ASCII alphanumeric indexes, except for letter 'A'). May store system-specific
          data related to a PCI device.</dd>
      </dl>
      All fields are optional and are not guaranteed to be present for a generic PCI device.
      Read-write fields are not possible to alter via Libvirt at the time of writing but their
      content is refreshed on each invocation in case this is done by means external to Libvirt.
    </p>
    <p>
      The device name and all fields may contain only the following characters:
      <code>[0-9a-zA-F -_,.:;=]</code>.
      The device name may be as large as 65535 bytes while fields are limited with 255 bytes.
    </p>

    <h2><a id="nodeExample">Examples</a></h2>

    <p>The following are some example node device XML outputs:</p>
    <pre>
&lt;device&gt;
  &lt;name&gt;computer&lt;/name&gt;
  &lt;capability type='system'&gt;
    &lt;product&gt;2241B36&lt;/product&gt;
    &lt;hardware&gt;
      &lt;vendor&gt;LENOVO&lt;/vendor&gt;
      &lt;version&gt;ThinkPad T500&lt;/version&gt;
      &lt;serial&gt;R89055N&lt;/serial&gt;
      &lt;uuid&gt;c9488981-5049-11cb-9c1c-993d0230b4cd&lt;/uuid&gt;
    &lt;/hardware&gt;
    &lt;firmware&gt;
      &lt;vendor&gt;LENOVO&lt;/vendor&gt;
      &lt;version&gt;6FET82WW (3.12 )&lt;/version&gt;
      &lt;release_date&gt;11/26/2009&lt;/release_date&gt;
    &lt;/firmware&gt;
  &lt;/capability&gt;
&lt;/device&gt;

&lt;device&gt;
  &lt;name&gt;net_eth1_00_27_13_6a_fe_00&lt;/name&gt;
  &lt;parent&gt;pci_0000_00_19_0&lt;/parent&gt;
  &lt;capability type='net'&gt;
    &lt;interface&gt;eth1&lt;/interface&gt;
    &lt;address&gt;00:27:13:6a:fe:00&lt;/address&gt;
    &lt;capability type='80203'/&gt;
  &lt;/capability&gt;
&lt;/device&gt;

&lt;device&gt;
  &lt;name&gt;pci_0000_02_00_0&lt;/name&gt;
  &lt;path&gt;/sys/devices/pci0000:00/0000:00:04.0/0000:02:00.0&lt;/path&gt;
  &lt;parent&gt;pci_0000_00_04_0&lt;/parent&gt;
  &lt;driver&gt;
    &lt;name&gt;igb&lt;/name&gt;
  &lt;/driver&gt;
  &lt;capability type='pci'&gt;
    &lt;class&gt;0x020000&lt;/class&gt;
    &lt;domain&gt;0&lt;/domain&gt;
    &lt;bus&gt;2&lt;/bus&gt;
    &lt;slot&gt;0&lt;/slot&gt;
    &lt;function&gt;0&lt;/function&gt;
    &lt;product id='0x10c9'&gt;82576 Gigabit Network Connection&lt;/product&gt;
    &lt;vendor id='0x8086'&gt;Intel Corporation&lt;/vendor&gt;
    &lt;capability type='virt_functions'&gt;
      &lt;address domain='0x0000' bus='0x02' slot='0x10' function='0x0'/&gt;
      &lt;address domain='0x0000' bus='0x02' slot='0x10' function='0x2'/&gt;
      &lt;address domain='0x0000' bus='0x02' slot='0x10' function='0x4'/&gt;
      &lt;address domain='0x0000' bus='0x02' slot='0x10' function='0x6'/&gt;
      &lt;address domain='0x0000' bus='0x02' slot='0x11' function='0x0'/&gt;
      &lt;address domain='0x0000' bus='0x02' slot='0x11' function='0x2'/&gt;
      &lt;address domain='0x0000' bus='0x02' slot='0x11' function='0x4'/&gt;
    &lt;/capability&gt;
    &lt;iommuGroup number='12'&gt;
      &lt;address domain='0x0000' bus='0x02' slot='0x00' function='0x0'/&gt;
      &lt;address domain='0x0000' bus='0x02' slot='0x00' function='0x1'/&gt;
    &lt;/iommuGroup&gt;
    &lt;pci-express&gt;
      &lt;link validity='cap' port='1' speed='2.5' width='1'/&gt;
      &lt;link validity='sta' speed='2.5' width='1'/&gt;
    &lt;/pci-express&gt;
  &lt;/capability&gt;
&lt;/device&gt;
    </pre>

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