virtio-serial-bus: Unset guest_connected at reset and driver reset
When a guest driver resets the virtio status to not ready, or when qemu is reset, reset all ports' guest_connected bit and let port users know of this event if they have the guest_close() callback registered. Reviewed-by: Alon Levy <alevy@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
parent
62a9fbf7fd
commit
439972253a
@ -528,6 +528,22 @@ static void set_config(VirtIODevice *vdev, const uint8_t *config_data)
|
||||
memcpy(&config, config_data, sizeof(config));
|
||||
}
|
||||
|
||||
static void guest_reset(VirtIOSerial *vser)
|
||||
{
|
||||
VirtIOSerialPort *port;
|
||||
VirtIOSerialPortClass *vsc;
|
||||
|
||||
QTAILQ_FOREACH(port, &vser->ports, next) {
|
||||
vsc = VIRTIO_SERIAL_PORT_GET_CLASS(port);
|
||||
if (port->guest_connected) {
|
||||
port->guest_connected = false;
|
||||
|
||||
if (vsc->guest_close)
|
||||
vsc->guest_close(port);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void set_status(VirtIODevice *vdev, uint8_t status)
|
||||
{
|
||||
VirtIOSerial *vser;
|
||||
@ -546,6 +562,17 @@ static void set_status(VirtIODevice *vdev, uint8_t status)
|
||||
*/
|
||||
port->guest_connected = true;
|
||||
}
|
||||
if (!(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
|
||||
guest_reset(vser);
|
||||
}
|
||||
}
|
||||
|
||||
static void vser_reset(VirtIODevice *vdev)
|
||||
{
|
||||
VirtIOSerial *vser;
|
||||
|
||||
vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
|
||||
guest_reset(vser);
|
||||
}
|
||||
|
||||
static void virtio_serial_save(QEMUFile *f, void *opaque)
|
||||
@ -918,6 +945,7 @@ VirtIODevice *virtio_serial_init(DeviceState *dev, virtio_serial_conf *conf)
|
||||
vser->vdev.get_config = get_config;
|
||||
vser->vdev.set_config = set_config;
|
||||
vser->vdev.set_status = set_status;
|
||||
vser->vdev.reset = vser_reset;
|
||||
|
||||
vser->qdev = dev;
|
||||
|
||||
|
Loading…
x
Reference in New Issue
Block a user