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| author | Zhu Lingshan <lingshan.zhu@intel.com> | 2022-09-29 04:45:50 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-10-08 03:00:42 +0300 |
| commit | 228565100def593df0f26ee07d5fb810039454d5 (patch) | |
| tree | d094e5736f78cf2d851802d966d4735105fa7e19 /include/uapi/linux | |
| parent | e60d64074214db7207fc13c25ee39d8d47cb4a34 (diff) | |
| download | linux-228565100def593df0f26ee07d5fb810039454d5.tar.xz | |
vDPA: allow userspace to query features of a vDPA device
This commit adds a new vDPA netlink attribution
VDPA_ATTR_VDPA_DEV_SUPPORTED_FEATURES. Userspace can query
features of vDPA devices through this new attr.
This commit invokes vdpa_config_ops.get_config()
rather than vdpa_get_config_unlocked() to read
the device config spcae, so no races in
vdpa_set_features_unlocked()
Userspace tool iproute2 example:
$ vdpa dev config show vdpa0
vdpa0: mac 00:e8:ca:11:be:05 link up link_announce false max_vq_pairs 4 mtu 1500
negotiated_features MRG_RXBUF CTRL_VQ MQ VERSION_1 ACCESS_PLATFORM
dev_features MTU MAC MRG_RXBUF CTRL_VQ MQ ANY_LAYOUT VERSION_1 ACCESS_PLATFORM
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Message-Id: <20220929014555.112323-2-lingshan.zhu@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/vdpa.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/vdpa.h b/include/uapi/linux/vdpa.h index 9dc855f37c59..9bd79235c875 100644 --- a/include/uapi/linux/vdpa.h +++ b/include/uapi/linux/vdpa.h @@ -46,6 +46,7 @@ enum vdpa_attr { VDPA_ATTR_DEV_NEGOTIATED_FEATURES, /* u64 */ VDPA_ATTR_DEV_MGMTDEV_MAX_VQS, /* u32 */ + /* virtio features that are supported by the vDPA management device */ VDPA_ATTR_DEV_SUPPORTED_FEATURES, /* u64 */ VDPA_ATTR_DEV_QUEUE_INDEX, /* u32 */ @@ -54,6 +55,9 @@ enum vdpa_attr { VDPA_ATTR_DEV_FEATURES, /* u64 */ + /* virtio features that are supported by the vDPA device */ + VDPA_ATTR_VDPA_DEV_SUPPORTED_FEATURES, /* u64 */ + /* new attributes must be added above here */ VDPA_ATTR_MAX, }; |