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Subject[PATCH] vdpa: merge functionally duplicated dev_features attributes
Date
We can merge VDPA_ATTR_VDPA_DEV_SUPPORTED_FEATURES with
VDPA_ATTR_DEV_FEATURES which is functionally equivalent.
While at it, tweak the comment in header file to make
user provioned device features distinguished from those
supported by the parent mgmtdev device: the former of
which can be inherited as a whole from the latter, or
can be a subset of the latter if explicitly specified.

Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
---
drivers/vdpa/vdpa.c | 2 +-
include/uapi/linux/vdpa.h | 4 +---
2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c
index febdc99..41ed563 100644
--- a/drivers/vdpa/vdpa.c
+++ b/drivers/vdpa/vdpa.c
@@ -855,7 +855,7 @@ static int vdpa_dev_net_config_fill(struct vdpa_device *vdev, struct sk_buff *ms

features_device = vdev->config->get_device_features(vdev);

- if (nla_put_u64_64bit(msg, VDPA_ATTR_VDPA_DEV_SUPPORTED_FEATURES, features_device,
+ if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_FEATURES, features_device,
VDPA_ATTR_PAD))
return -EMSGSIZE;

diff --git a/include/uapi/linux/vdpa.h b/include/uapi/linux/vdpa.h
index 9bd7923..54b649a 100644
--- a/include/uapi/linux/vdpa.h
+++ b/include/uapi/linux/vdpa.h
@@ -53,11 +53,9 @@ enum vdpa_attr {
VDPA_ATTR_DEV_VENDOR_ATTR_NAME, /* string */
VDPA_ATTR_DEV_VENDOR_ATTR_VALUE, /* u64 */

+ /* virtio features that are provisioned to the vDPA device */
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,
};
--
1.8.3.1
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