[Qemu-devel] [PATCH v4 3/5] vhost: introduce vhost_set/get_protocol_features callbacks

[Yuanhan Liu <yuanhan.liu@linux.intel.com>]

Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
---
 hw/virtio/vhost-user.c            | 7 +++++++
 include/hw/virtio/vhost-backend.h | 6 ++++++
 2 files changed, 13 insertions(+)

diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index 4766f98..2d8bdbd 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -471,6 +471,11 @@ static int vhost_user_get_features(struct vhost_dev *dev, uint64_t *features)
     return vhost_user_get_u64(dev, VHOST_USER_GET_FEATURES, features);
 }
 
+static int vhost_user_get_protocol_features(struct vhost_dev *dev, uint64_t *features)
+{
+    return vhost_user_get_u64(dev, VHOST_USER_GET_PROTOCOL_FEATURES, features);
+}
+
 static int vhost_user_set_owner(struct vhost_dev *dev)
 {
     VhostUserMsg msg = {
@@ -616,6 +621,8 @@ const VhostOps user_ops = {
         .vhost_set_vring_call = vhost_user_set_vring_call,
         .vhost_set_features = vhost_user_set_features,
         .vhost_get_features = vhost_user_get_features,
+        .vhost_set_protocol_features = vhost_user_set_protocol_features,
+        .vhost_get_protocol_features = vhost_user_get_protocol_features,
         .vhost_set_owner = vhost_user_set_owner,
         .vhost_reset_device = vhost_user_reset_device,
         .vhost_get_vq_index = vhost_user_get_vq_index,
diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-backend.h
index c59cc81..7e705ce 100644
--- a/include/hw/virtio/vhost-backend.h
+++ b/include/hw/virtio/vhost-backend.h
@@ -62,6 +62,10 @@ typedef int (*vhost_set_features_op)(struct vhost_dev *dev,
                                      uint64_t features);
 typedef int (*vhost_get_features_op)(struct vhost_dev *dev,
                                      uint64_t *features);
+typedef int (*vhost_set_protocol_features_op)(struct vhost_dev *dev,
+                                              uint64_t features);
+typedef int (*vhost_get_protocol_features_op)(struct vhost_dev *dev,
+                                              uint64_t *features);
 typedef int (*vhost_set_owner_op)(struct vhost_dev *dev);
 typedef int (*vhost_reset_device_op)(struct vhost_dev *dev);
 typedef int (*vhost_get_vq_index_op)(struct vhost_dev *dev, int idx);
@@ -91,6 +95,8 @@ typedef struct VhostOps {
     vhost_set_vring_call_op vhost_set_vring_call;
     vhost_set_features_op vhost_set_features;
     vhost_get_features_op vhost_get_features;
+    vhost_set_protocol_features_op vhost_set_protocol_features;
+    vhost_get_protocol_features_op vhost_get_protocol_features;
     vhost_set_owner_op vhost_set_owner;
     vhost_reset_device_op vhost_reset_device;
     vhost_get_vq_index_op vhost_get_vq_index;
-- 
1.9.0