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authorEli Cohen <elic@nvidia.com>2022-01-05 13:46:40 +0200
committerMichael S. Tsirkin <mst@redhat.com>2022-01-14 18:50:53 -0500
commit612f330ec56f12c0d099286c45f82d835845f136 (patch)
tree824fef20cd098581d4ed1c54b11127fb468f26c2 /include/uapi
parent75560522eaef2f7c7b2fec3c22e1254244f52372 (diff)
vdpa: Add support for returning device configuration information
Add netlink attribute to store the negotiated features. This can be used by userspace to get the current state of the vdpa instance. Examples: $ vdpa dev config show vdpa-a vdpa-a: mac 00:00:00:00:88:88 link up link_announce false max_vq_pairs 16 mtu 1500 negotiated_features CSUM GUEST_CSUM MTU MAC HOST_TSO4 HOST_TSO6 STATUS \ CTRL_VQ MQ CTRL_MAC_ADDR VERSION_1 ACCESS_PLATFORM $ vdpa -j dev config show vdpa-a {"config":{"vdpa-a":{"mac":"00:00:00:00:88:88","link ":"up","link_announce":false, \ "max_vq_pairs":16,"mtu":1500,"negotiated_features":["CSUM","GUEST_CSUM","MTU","MAC", \ "HOST_TSO4","HOST_TSO6","STATUS","CTRL_VQ","MQ","CTRL_MAC_ADDR","VERSION_1", \ "ACCESS_PLATFORM"]}}} $ vdpa -jp dev config show vdpa-a { "config": { "vdpa-a": { "mac": "00:00:00:00:88:88", "link ": "up", "link_announce ": false, "max_vq_pairs": 16, "mtu": 1500, "negotiated_features": [ "CSUM","GUEST_CSUM","MTU","MAC","HOST_TSO4","HOST_TSO6","STATUS","CTRL_VQ","MQ", \ "CTRL_MAC_ADDR","VERSION_1","ACCESS_PLATFORM" ] } } } Signed-off-by: Eli Cohen <elic@nvidia.com> Link: https://lore.kernel.org/r/20220105114646.577224-9-elic@nvidia.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'include/uapi')
-rw-r--r--include/uapi/linux/vdpa.h4
1 files changed, 4 insertions, 0 deletions
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,
};