@@ -315,4 +315,20 @@
##
{ 'event': 'QUORUM_REPORT_BAD',
'data': { '*error': 'str', 'node-name': 'str',
'sector-num': 'int', 'sector-count': 'int' } }
+
+##
+# @VSERPORT_CHANGE
+#
+# Emitted when the guest takes an action that changes the status of a
+# virtio-serial port (eg. opens or closes it).
+#
+# @id: device identifier of the virtio-serial port
+#
+# @status: new status of the virtio-serial port
+#
+# Since: 2.1
+##
+{ 'event': 'VSERPORT_CHANGE',
+ 'data': { 'id': 'str',
+ 'status': 'VirtioSerialPortStatus' } }
@@ -3398,5 +3398,21 @@
##
{ 'enum': 'GuestPanicAction',
'data': [ 'pause' ] }
+##
+# @VirtioSerialPortStatus
+#
+# An enumeration of the possible / recognized states of virtio-serial ports.
+#
+# @connected: the virtio-serial port has been opened (connected to) in the
+# guest.
+#
+# @disconnected: the virtio-serial port has been closed (disconnected from) in
+# the guest.
+#
+# Since: 2.1
+##
+{ 'enum': 'VirtioSerialPortStatus',
+ 'data': [ 'connected', 'disconnected' ] }
+
{ 'include': 'qapi-event.json' }
@@ -13,8 +13,9 @@
#include "sysemu/char.h"
#include "qemu/error-report.h"
#include "trace.h"
#include "hw/virtio/virtio-serial.h"
+#include "qapi-event.h"
#define TYPE_VIRTIO_CONSOLE_SERIAL_PORT "virtserialport"
#define VIRTIO_CONSOLE(obj) \
OBJECT_CHECK(VirtConsole, (obj), TYPE_VIRTIO_CONSOLE_SERIAL_PORT)
@@ -80,13 +81,21 @@ static ssize_t flush_buf(VirtIOSerialPort *port,
/* Callback function that's called when the guest opens/closes the port */
static void set_guest_connected(VirtIOSerialPort *port, int guest_connected)
{
VirtConsole *vcon = VIRTIO_CONSOLE(port);
+ DeviceState *dev = DEVICE(port);
- if (!vcon->chr) {
- return;
+ if (vcon->chr) {
+ qemu_chr_fe_set_open(vcon->chr, guest_connected);
+ }
+
+ if (dev->id) {
+ VirtioSerialPortStatus status = guest_connected ?
+ VIRTIO_SERIAL_PORT_STATUS_CONNECTED :
+ VIRTIO_SERIAL_PORT_STATUS_DISCONNECTED;
+
+ qapi_event_send_vserport_change(dev->id, status, &error_abort);
}
- qemu_chr_fe_set_open(vcon->chr, guest_connected);
}
/* Readiness of the guest to accept data on a port */
static int chr_can_read(void *opaque)
@@ -584,8 +584,9 @@ static void monitor_qapi_event_init(void)
/* Limit guest-triggerable events to 1 per second */
monitor_qapi_event_throttle(QAPI_EVENT_RTC_CHANGE, 1000);
monitor_qapi_event_throttle(QAPI_EVENT_WATCHDOG, 1000);
monitor_qapi_event_throttle(QAPI_EVENT_BALLOON_CHANGE, 1000);
+ monitor_qapi_event_throttle(QAPI_EVENT_VSERPORT_CHANGE, 1000);
/* limit the rate of quorum events to avoid hammering the management */
monitor_qapi_event_throttle(QAPI_EVENT_QUORUM_REPORT_BAD, 1000);
monitor_qapi_event_throttle(QAPI_EVENT_QUORUM_FAILURE, 1000);
Libvirt wants to know about the guest-side connection state of some virtio-serial ports (in particular the one(s) assigned to guest agent(s)). Report such states with a new monitor event. RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1080376 Signed-off-by: Laszlo Ersek <lersek@redhat.com> --- Notes: v2: - emit event unconditionally; drop per-port "report_connstate" property [Eric] - rate-limit the new event [Eric] -- unify it with other guest-triggerable events in monitor_qapi_event_init() - rebased to Wenchao's qapi-event series - introduce one event only, VSERPORT_CHANGE, and make the port status a parameter [Eric] qapi-event.json | 16 ++++++++++++++++ qapi-schema.json | 16 ++++++++++++++++ hw/char/virtio-console.c | 15 ++++++++++++--- monitor.c | 1 + 4 files changed, 45 insertions(+), 3 deletions(-)