[Qemu-devel] [PATCH] vhost-vsock: report QMP event when set running

[Ning Bo <ning.bo9@zte.com.cn>]

Report vsock running event so that the upper application can
control boot sequence.
see https://github.com/kata-containers/runtime/pull/1918

Signed-off-by: Ning Bo <ning.bo9@zte.com.cn>
---
 hw/virtio/vhost-vsock.c |  3 +++
 qapi/char.json          | 22 ++++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/hw/virtio/vhost-vsock.c b/hw/virtio/vhost-vsock.c
index 0371493..a5920fd 100644
--- a/hw/virtio/vhost-vsock.c
+++ b/hw/virtio/vhost-vsock.c
@@ -22,6 +22,7 @@
 #include "qemu/iov.h"
 #include "qemu/module.h"
 #include "monitor/monitor.h"
+#include "qapi/qapi-events-char.h"
 
 enum {
     VHOST_VSOCK_SAVEVM_VERSION = 0,
@@ -68,6 +69,8 @@ static int vhost_vsock_set_running(VHostVSock *vsock, int start)
     if (ret < 0) {
         return -errno;
     }
+    qapi_event_send_vsock_running(vsock->conf.guest_cid, start != 0);
+
     return 0;
 }
 
diff --git a/qapi/char.json b/qapi/char.json
index a6e81ac..7b746e3 100644
--- a/qapi/char.json
+++ b/qapi/char.json
@@ -570,3 +570,25 @@
 { 'event': 'VSERPORT_CHANGE',
   'data': { 'id': 'str',
             'open': 'bool' } }
+
+##
+# @VSOCK_RUNNING:
+#
+# Emitted when the guest changes the vsock status.
+#
+# @cid: guest context ID
+#
+# @running: true if the vsock is running
+#
+# Since: v4.2
+#
+# Example:
+#
+# <- { "event": "VSOCK_RUNNING",
+#      "data": { "cid": "123456", "running": true },
+#      "timestamp": { "seconds": 1401385907, "microseconds": 422329 } }
+#
+##
+{ 'event': 'VSOCK_RUNNING',
+  'data': { 'cid': 'uint64',
+            'running': 'bool' } }
-- 
2.9.5