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source/pci: add iommu_group/type attribute

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Add "iommu_group/type" to the list of PCI device attributes that are
discovered. The value is the raw value from sysfs (i.e DMA, DMA-FQ or
identity).

No built-in (automatic) labels are generated based on this, but, the
attribute is available for custom label rules to use. Examples of custom
rules:

  - name: "iommu enabled rule"
    labels:
      iommu.enabled: "true"
    matchFeatures:
      - feature: pci.device
        matchExpressions:
          "iommu_group/type": {op: NotIn, value: ["unknown"]}

  - name: "iommu passthrough rule"
    labels:
      iommu.passthrough: "true"
    matchFeatures:
      - feature: pci.device
        matchExpressions:
          "iommu_group/type": {op: In, value: ["identity"]}
This commit is contained in:
Markus Lehtonen 2021-12-21 15:03:58 +02:00
parent df9d4e2f24
commit 152f3531fe
2 changed files with 2 additions and 2 deletions
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2
docs/advanced/customization-guide.md
View file

@ -515,7 +515,7 @@ The following features are available for matching:
| **`network.device`** | instance | | | Physical (non-virtual) network interfaces present in the system
| | | **`<sysfs-attribute>`** | string | Sysfs network interface attribute, available attributes: `name`, `operstate`, `speed`, `sriov_numvfs`, `sriov_totalvfs`
| **`pci.device`** | instance | | | PCI devices present in the system
| | | **`<sysfs-attribute>`** | string | Value of the sysfs device attribute, available attributes: `class`, `vendor`, `device`, `subsystem_vendor`, `subsystem_device`, `sriov_totalvfs`
| | | **`<sysfs-attribute>`** | string | Value of the sysfs device attribute, available attributes: `class`, `vendor`, `device`, `subsystem_vendor`, `subsystem_device`, `sriov_totalvfs`, `iommu_group/type`
| **`storage.device`** | instance | | | Block storage devices present in the system
| | | **`<sysfs-attribute>`** | string | Sysfs network interface attribute, available attributes: `name`, `dax`, `rotational`, `nr_zones`, `zoned`
| **`system.osrelease`** | attribute | | | System identification data from `/etc/os-release`

2
source/pci/utils.go
View file

@ -29,7 +29,7 @@ import (
)
var mandatoryDevAttrs = []string{"class", "vendor", "device", "subsystem_vendor", "subsystem_device"}
var optionalDevAttrs = []string{"sriov_totalvfs"}
var optionalDevAttrs = []string{"sriov_totalvfs", "iommu_group/type"}
// Read a single PCI device attribute
// A PCI attribute in this context, maps to the corresponding sysfs file