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-rw-r--r--drivers/vdpa/vdpa.c3
-rw-r--r--include/uapi/linux/vdpa.h4
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c
index 96d31b80fdce..60cf821175fa 100644
--- a/drivers/vdpa/vdpa.c
+++ b/drivers/vdpa/vdpa.c
@@ -846,6 +846,9 @@ static int vdpa_dev_net_config_fill(struct vdpa_device *vdev, struct sk_buff *ms
return -EMSGSIZE;
features = vdev->config->get_driver_features(vdev);
+ if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_NEGOTIATED_FEATURES, features,
+ VDPA_ATTR_PAD))
+ return -EMSGSIZE;
return vdpa_dev_net_mq_config_fill(vdev, msg, features, &config);
}
diff --git a/include/uapi/linux/vdpa.h b/include/uapi/linux/vdpa.h
index a252f06f9dfd..db3738ef3beb 100644
--- a/include/uapi/linux/vdpa.h
+++ b/include/uapi/linux/vdpa.h
@@ -23,6 +23,9 @@ enum vdpa_command {
enum vdpa_attr {
VDPA_ATTR_UNSPEC,
+ /* Pad attribute for 64b alignment */
+ VDPA_ATTR_PAD = VDPA_ATTR_UNSPEC,
+
/* bus name (optional) + dev name together make the parent device handle */
VDPA_ATTR_MGMTDEV_BUS_NAME, /* string */
VDPA_ATTR_MGMTDEV_DEV_NAME, /* string */
@@ -40,6 +43,7 @@ enum vdpa_attr {
VDPA_ATTR_DEV_NET_CFG_MAX_VQP, /* u16 */
VDPA_ATTR_DEV_NET_CFG_MTU, /* u16 */
+ VDPA_ATTR_DEV_NEGOTIATED_FEATURES, /* u64 */
/* new attributes must be added above here */
VDPA_ATTR_MAX,
};