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expose SRIOV information as PCI devices #315

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expose SRIOV information as PCI devices #315

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Commits on Jul 21, 2023

  1. pci: align to the left the loop 

    simplify the code without change in behaviour, using
a flow without `else` to reduce the blocks.

Signed-off-by: Francesco Romani <fromani@redhat.com>
    @ffromani
    ffromani committed Jul 21, 2023
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  2. sriov: add support as special PCI devices 

    Add support to report SRIOV devices.
Differently from GPU devices, we model SRIOV devices as special
PCI devices, extending the `pci` package instead of introducing
a new top-level package.
This design emerged during the review of a previous proposal:
jaypipes@9058f61#r755312597

SRIOV devices are either Physical Functions or Virtual functions.
The preferred representation for ghw is Physical Functions, whose
dependent devices will be Virtual Functions; however, for the sake of
practicality, the API also exposes soft references to Virtual Functions,
so consumers of the API can access them directly and not navigating
the parent devices.

This patch also adds support in `ghwc`, to report the sriov information,
and in the `snapshot` package, to make sure to capture all the files
in sysfs that ghw cares about.

Last but not least, lacking access to suitable non-linux systems,
support is provided only on linux OS, even though the API tries hard
not to be linux-specific.

Resolves: jaypipes#92
Signed-off-by: Francesco Romani <fromani@redhat.com>
    @ffromani
    ffromani committed Jul 21, 2023
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