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authorSi-Wei Liu <si-wei.liu@oracle.com>2023-02-07 00:12:04 +0100
committerMichael S. Tsirkin <mst@redhat.com>2023-02-21 01:27:00 +0100
commitdeeacf35c922da579637f5db625af20baafc66ed (patch)
tree163eddbfa3ca603adc1186b0128ce505792a4f64 /rust
parentvdpa/mlx5: make MTU/STATUS presence conditional on feature bits (diff)
downloadlinux-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 'rust')
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