[libvirt] [PATCH] xml: nodedev: add class info for pci capability

Nikolay Shirokovskiy Fri, 22 Feb 2019 05:39:31 -0800

This info can be useful to filter devices visible
to mgmt clients so that they won't see devices that
unsafe/not meaningful to pass thru.


Provide class info the way it is provided by udev or
kernel that is as single 6-digit hexadecimal.

Class element is not optional. I guess this should not
break users that use virNodeDeviceCreateXML because
they probably specify only scsi_host capability on
input and then node device driver gets other capabilities
from udev after device appeared.

HAL driver does not get support for the new element in
this patch.

Signed-off-by: Nikolay Shirokovskiy <nshirokovs...@virtuozzo.com>
---
 docs/formatnode.html.in                                     |  5 +++++
 docs/schemas/nodedev.rng                                    |  5 +++++
 src/conf/node_device_conf.c                                 | 13 +++++++++++++
 tests/nodedevschemadata/pci_0000_00_02_0_header_type.xml    |  1 +
 tests/nodedevschemadata/pci_0000_00_1c_0_header_type.xml    |  1 +
 tests/nodedevschemadata/pci_0000_02_10_7_mdev_types.xml     |  1 +
 tests/nodedevschemadata/pci_0000_02_10_7_sriov.xml          |  1 +
 .../nodedevschemadata/pci_0000_02_10_7_sriov_pf_vfs_all.xml |  1 +
 .../pci_0000_02_10_7_sriov_pf_vfs_all_header_type.xml       |  1 +
 tests/nodedevschemadata/pci_0000_02_10_7_sriov_vfs.xml      |  1 +
 .../pci_0000_02_10_7_sriov_zero_vfs_max_count.xml           |  1 +
 tests/nodedevschemadata/pci_1002_71c4.xml                   |  1 +
 tests/nodedevschemadata/pci_8086_0c0c_snd_hda_intel.xml     |  1 +
 tests/nodedevschemadata/pci_8086_10c9_sriov_pf.xml          |  1 +
 tests/nodedevschemadata/pci_8086_4238_pcie_wireless.xml     |  1 +
 tests/nodedevschemadata/pci_82579LM_network_adapter.xml     |  1 +
 16 files changed, 36 insertions(+)

diff --git a/docs/formatnode.html.in b/docs/formatnode.html.in
index 29244a8..b72d7db 100644
--- a/docs/formatnode.html.in
+++ b/docs/formatnode.html.in
@@ -70,6 +70,10 @@
           <dd>Describes a device on the host's PCI bus.  Sub-elements
             include:
             <dl>
+              <dt><code>class</code></dt>
+              <dd>Combined class, subclass and
+                programming interface codes as 6-digit hexadecimal number.
+                <span class="since">Since 5.1.0</span></dd>
               <dt><code>domain</code></dt>
               <dd>Which domain the device belongs to.</dd>
               <dt><code>bus</code></dt>
@@ -381,6 +385,7 @@
     &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;
diff --git a/docs/schemas/nodedev.rng b/docs/schemas/nodedev.rng
index 0498489..0f45d79 100644
--- a/docs/schemas/nodedev.rng
+++ b/docs/schemas/nodedev.rng
@@ -133,6 +133,11 @@
       <value>pci</value>
     </attribute>
 
+    <element name='class'>
+      <data type="string">
+        <param name="pattern">0x[0-9a-fA-F]{6}</param>
+      </data>
+    </element>
     <element name='domain'>
       <ref name='unsignedLong'/>
     </element>
diff --git a/src/conf/node_device_conf.c b/src/conf/node_device_conf.c
index 1b1f57d..d2f5183 100644
--- a/src/conf/node_device_conf.c
+++ b/src/conf/node_device_conf.c
@@ -208,6 +208,7 @@ virNodeDeviceCapPCIDefFormat(virBufferPtr buf,
 {
     size_t i;
 
+    virBufferAsprintf(buf, "<class>0x%.6x</class>\n", data->pci_dev.class);
     virBufferAsprintf(buf, "<domain>%d</domain>\n",
                       data->pci_dev.domain);
     virBufferAsprintf(buf, "<bus>%d</bus>\n", data->pci_dev.bus);
@@ -1644,6 +1645,18 @@ virNodeDevCapPCIDevParseXML(xmlXPathContextPtr ctxt,
     orignode = ctxt->node;
     ctxt->node = node;
 
+    if (virNodeDevCapsDefParseHexId("string(./class[1])", ctxt,
+                                    &pci_dev->class, def,
+                                    _("no PCI class supplied for '%s'"),
+                                    _("invalid PCI class supplied for '%s'")) 
< 0)
+        goto out;
+
+    if (pci_dev->class > 0xFFFFFF) {
+        virReportError(VIR_ERR_INTERNAL_ERROR,
+                       _("invalid PCI class supplied for '%s'"), def->name);
+        goto out;
+    }
+
     if (virNodeDevCapsDefParseULong("number(./domain[1])", ctxt,
                                     &pci_dev->domain, def,
                                     _("no PCI domain ID supplied for '%s'"),
diff --git a/tests/nodedevschemadata/pci_0000_00_02_0_header_type.xml 
b/tests/nodedevschemadata/pci_0000_00_02_0_header_type.xml
index 5150fd1..387fce7 100644
--- a/tests/nodedevschemadata/pci_0000_00_02_0_header_type.xml
+++ b/tests/nodedevschemadata/pci_0000_00_02_0_header_type.xml
@@ -2,6 +2,7 @@
   <name>pci_0000_00_02_0</name>
   <parent>computer</parent>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>0</bus>
     <slot>2</slot>
diff --git a/tests/nodedevschemadata/pci_0000_00_1c_0_header_type.xml 
b/tests/nodedevschemadata/pci_0000_00_1c_0_header_type.xml
index c1be9f7..b07d14f 100644
--- a/tests/nodedevschemadata/pci_0000_00_1c_0_header_type.xml
+++ b/tests/nodedevschemadata/pci_0000_00_1c_0_header_type.xml
@@ -2,6 +2,7 @@
   <name>pci_0000_00_1c_0</name>
   <parent>computer</parent>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>0</bus>
     <slot>28</slot>
diff --git a/tests/nodedevschemadata/pci_0000_02_10_7_mdev_types.xml 
b/tests/nodedevschemadata/pci_0000_02_10_7_mdev_types.xml
index a2d5756..8e71e3f 100644
--- a/tests/nodedevschemadata/pci_0000_02_10_7_mdev_types.xml
+++ b/tests/nodedevschemadata/pci_0000_02_10_7_mdev_types.xml
@@ -2,6 +2,7 @@
   <name>pci_0000_02_10_7</name>
   <parent>pci_0000_00_04_0</parent>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>2</bus>
     <slot>16</slot>
diff --git a/tests/nodedevschemadata/pci_0000_02_10_7_sriov.xml 
b/tests/nodedevschemadata/pci_0000_02_10_7_sriov.xml
index 8f243b4..6fa2b40 100644
--- a/tests/nodedevschemadata/pci_0000_02_10_7_sriov.xml
+++ b/tests/nodedevschemadata/pci_0000_02_10_7_sriov.xml
@@ -2,6 +2,7 @@
   <name>pci_0000_02_10_7</name>
   <parent>pci_0000_00_04_0</parent>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>2</bus>
     <slot>16</slot>
diff --git a/tests/nodedevschemadata/pci_0000_02_10_7_sriov_pf_vfs_all.xml 
b/tests/nodedevschemadata/pci_0000_02_10_7_sriov_pf_vfs_all.xml
index 9e8dace..74036a6 100644
--- a/tests/nodedevschemadata/pci_0000_02_10_7_sriov_pf_vfs_all.xml
+++ b/tests/nodedevschemadata/pci_0000_02_10_7_sriov_pf_vfs_all.xml
@@ -2,6 +2,7 @@
   <name>pci_0000_02_10_7</name>
   <parent>pci_0000_00_04_0</parent>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>2</bus>
     <slot>16</slot>
diff --git 
a/tests/nodedevschemadata/pci_0000_02_10_7_sriov_pf_vfs_all_header_type.xml 
b/tests/nodedevschemadata/pci_0000_02_10_7_sriov_pf_vfs_all_header_type.xml
index 4e6323a..c30c0d0 100644
--- a/tests/nodedevschemadata/pci_0000_02_10_7_sriov_pf_vfs_all_header_type.xml
+++ b/tests/nodedevschemadata/pci_0000_02_10_7_sriov_pf_vfs_all_header_type.xml
@@ -2,6 +2,7 @@
   <name>pci_0000_02_10_7</name>
   <parent>pci_0000_00_04_0</parent>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>2</bus>
     <slot>16</slot>
diff --git a/tests/nodedevschemadata/pci_0000_02_10_7_sriov_vfs.xml 
b/tests/nodedevschemadata/pci_0000_02_10_7_sriov_vfs.xml
index 355eaaa..096055e 100644
--- a/tests/nodedevschemadata/pci_0000_02_10_7_sriov_vfs.xml
+++ b/tests/nodedevschemadata/pci_0000_02_10_7_sriov_vfs.xml
@@ -2,6 +2,7 @@
   <name>pci_0000_02_10_7</name>
   <parent>pci_0000_00_04_0</parent>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>2</bus>
     <slot>16</slot>
diff --git 
a/tests/nodedevschemadata/pci_0000_02_10_7_sriov_zero_vfs_max_count.xml 
b/tests/nodedevschemadata/pci_0000_02_10_7_sriov_zero_vfs_max_count.xml
index e9eb122..8259cd0 100644
--- a/tests/nodedevschemadata/pci_0000_02_10_7_sriov_zero_vfs_max_count.xml
+++ b/tests/nodedevschemadata/pci_0000_02_10_7_sriov_zero_vfs_max_count.xml
@@ -2,6 +2,7 @@
   <name>pci_0000_02_10_7</name>
   <parent>pci_0000_00_04_0</parent>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>2</bus>
     <slot>16</slot>
diff --git a/tests/nodedevschemadata/pci_1002_71c4.xml 
b/tests/nodedevschemadata/pci_1002_71c4.xml
index 6d5d85b..2039e22 100644
--- a/tests/nodedevschemadata/pci_1002_71c4.xml
+++ b/tests/nodedevschemadata/pci_1002_71c4.xml
@@ -2,6 +2,7 @@
   <name>pci_1002_71c4</name>
   <parent>pci_8086_27a1</parent>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>1</bus>
     <slot>0</slot>
diff --git a/tests/nodedevschemadata/pci_8086_0c0c_snd_hda_intel.xml 
b/tests/nodedevschemadata/pci_8086_0c0c_snd_hda_intel.xml
index 8e89900..3ffe53b 100644
--- a/tests/nodedevschemadata/pci_8086_0c0c_snd_hda_intel.xml
+++ b/tests/nodedevschemadata/pci_8086_0c0c_snd_hda_intel.xml
@@ -2,6 +2,7 @@
   <name>pci_0000_00_03_0</name>
   <parent>computer</parent>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>0</bus>
     <slot>3</slot>
diff --git a/tests/nodedevschemadata/pci_8086_10c9_sriov_pf.xml 
b/tests/nodedevschemadata/pci_8086_10c9_sriov_pf.xml
index 6e1dc86..6bd1292 100644
--- a/tests/nodedevschemadata/pci_8086_10c9_sriov_pf.xml
+++ b/tests/nodedevschemadata/pci_8086_10c9_sriov_pf.xml
@@ -2,6 +2,7 @@
   <name>pci_0000_02_00_0</name>
   <parent>pci_0000_00_04_0</parent>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>2</bus>
     <slot>0</slot>
diff --git a/tests/nodedevschemadata/pci_8086_4238_pcie_wireless.xml 
b/tests/nodedevschemadata/pci_8086_4238_pcie_wireless.xml
index 18172e9..59f5ec8 100644
--- a/tests/nodedevschemadata/pci_8086_4238_pcie_wireless.xml
+++ b/tests/nodedevschemadata/pci_8086_4238_pcie_wireless.xml
@@ -2,6 +2,7 @@
   <name>pci_0000_03_00_0</name>
   <parent>pci_0000_00_1c_1</parent>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>3</bus>
     <slot>0</slot>
diff --git a/tests/nodedevschemadata/pci_82579LM_network_adapter.xml 
b/tests/nodedevschemadata/pci_82579LM_network_adapter.xml
index 6e154d6..96a4c51 100644
--- a/tests/nodedevschemadata/pci_82579LM_network_adapter.xml
+++ b/tests/nodedevschemadata/pci_82579LM_network_adapter.xml
@@ -5,6 +5,7 @@
     <name>e1000e</name>
   </driver>
   <capability type='pci'>
+    <class>0xffffff</class>
     <domain>0</domain>
     <bus>0</bus>
     <slot>25</slot>
-- 
1.8.3.1

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[libvirt] [PATCH] xml: nodedev: add class info for pci capability

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