virtio-serial-bus: Maintain guest and host port open/close state
Via control channel messages, the guest can tell us whether a port got
opened or closed. Similarly, we can also indicate to the guest of host
port open/close events.
Signed-off-by: Amit Shah <[email protected]>
Signed-off-by: Anthony Liguori <[email protected]>
diff --git a/hw/virtio-serial.h b/hw/virtio-serial.h
index fe8e357..d9c7acb 100644
--- a/hw/virtio-serial.h
+++ b/hw/virtio-serial.h
@@ -49,6 +49,7 @@
#define VIRTIO_CONSOLE_PORT_READY 0
#define VIRTIO_CONSOLE_CONSOLE_PORT 1
#define VIRTIO_CONSOLE_RESIZE 2
+#define VIRTIO_CONSOLE_PORT_OPEN 3
/* == In-qemu interface == */
@@ -92,6 +93,11 @@
/* Identify if this is a port that binds with hvc in the guest */
uint8_t is_console;
+
+ /* Is the corresponding guest device open? */
+ bool guest_connected;
+ /* Is this device open for IO on the host? */
+ bool host_connected;
};
struct VirtIOSerialPortInfo {
