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| author | Si-Wei Liu <si-wei.liu@oracle.com> | 2023-02-07 00:12:04 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-02-21 01:27:00 +0100 |
| commit | deeacf35c922da579637f5db625af20baafc66ed (patch) | |
| tree | 163eddbfa3ca603adc1186b0128ce505792a4f64 /drivers/virtio | |
| parent | vdpa/mlx5: make MTU/STATUS presence conditional on feature bits (diff) | |
| download | linux-deeacf35c922da579637f5db625af20baafc66ed.tar.xz linux-deeacf35c922da579637f5db625af20baafc66ed.zip | |
vdpa/mlx5: support device features provisioning
This patch implements features provisioning for mlx5_vdpa.
1) Validate the provisioned features are a subset of the parent
features.
2) Clearing features that are not wanted by userspace.
For example:
# vdpa mgmtdev show
pci/0000:41:04.2:
supported_classes net
max_supported_vqs 65
dev_features CSUM GUEST_CSUM MTU MAC HOST_TSO4 HOST_TSO6 STATUS CTRL_VQ CTRL_VLAN MQ CTRL_MAC_ADDR VERSION_1 ACCESS_PLATFORM
1) Provision vDPA device with all features derived from the parent
# vdpa dev add name vdpa1 mgmtdev pci/0000:41:04.2
# vdpa dev config show
vdpa1: mac e4:11:c6:d3:45:f0 link up link_announce false max_vq_pairs 1 mtu 1500
negotiated_features CSUM GUEST_CSUM MTU HOST_TSO4 HOST_TSO6 STATUS CTRL_VQ CTRL_VLAN MQ CTRL_MAC_ADDR VERSION_1 ACCESS_PLATFORM
2) Provision vDPA device with a subset of parent features
# vdpa dev add name vdpa1 mgmtdev pci/0000:41:04.2 device_features 0x300020000
# vdpa dev config show
vdpa1:
negotiated_features CTRL_VQ VERSION_1 ACCESS_PLATFORM
Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
Reviewed-by: Eli Cohen <elic@nvidia.com>
Message-Id: <1675725124-7375-7-git-send-email-si-wei.liu@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/virtio')
0 files changed, 0 insertions, 0 deletions