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authorKonstantin Khlebnikov <khlebnikov@yandex-team.ru>2022-06-23 19:13:24 +0300
committerMichael S. Tsirkin <mst@redhat.com>2022-06-27 18:53:18 -0400
commit60dc3c5be9ce67f4195c432b22a88d8af6429d80 (patch)
tree2253b8c09ca3744b574f53f7902fc56bc2a3abaa /hw/virtio/vhost-user.c
parent71e3d004824724fe55cd1c4dba34477361a38319 (diff)
downloadfocaccia-qemu-60dc3c5be9ce67f4195c432b22a88d8af6429d80.tar.gz
focaccia-qemu-60dc3c5be9ce67f4195c432b22a88d8af6429d80.zip
vhost: add method vhost_set_vring_err
Kernel and user vhost may report virtqueue errors via eventfd.
This is only reliable way to get notification about protocol error.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Message-Id: <20220623161325.18813-2-vsementsov@yandex-team.ru>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Roman Kagan <rvkagan@yandex-team.ru>
Diffstat (limited to 'hw/virtio/vhost-user.c')
-rw-r--r--hw/virtio/vhost-user.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index 4b9be26e84..75b8df21a4 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -1313,6 +1313,11 @@ static int vhost_user_set_vring_call(struct vhost_dev *dev,
     return vhost_set_vring_file(dev, VHOST_USER_SET_VRING_CALL, file);
 }
 
+static int vhost_user_set_vring_err(struct vhost_dev *dev,
+                                    struct vhost_vring_file *file)
+{
+    return vhost_set_vring_file(dev, VHOST_USER_SET_VRING_ERR, file);
+}
 
 static int vhost_user_get_u64(struct vhost_dev *dev, int request, uint64_t *u64)
 {
@@ -2616,6 +2621,7 @@ const VhostOps user_ops = {
         .vhost_get_vring_base = vhost_user_get_vring_base,
         .vhost_set_vring_kick = vhost_user_set_vring_kick,
         .vhost_set_vring_call = vhost_user_set_vring_call,
+        .vhost_set_vring_err = vhost_user_set_vring_err,
         .vhost_set_features = vhost_user_set_features,
         .vhost_get_features = vhost_user_get_features,
         .vhost_set_owner = vhost_user_set_owner,