ukui/kernel
0
0
Fork 0
mirror of https://github.com/ukui/kernel.git synced 2026-03-09 10:07:04 -07:00
Code Issues Packages Projects Releases Wiki Activity

vDPA: allow userspace to query features of a vDPA device

Browse Source 
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>
This commit is contained in:
Zhu Lingshan
2022-09-29 09:45:50 +08:00
committed by Michael S. Tsirkin
parent e60d640742
commit 228565100d
2 changed files with 15 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
include/uapi/linux/vdpa.h
View File

@@ -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,
};