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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 21/35] libxl_usb: Make libxl__device_usbdev_add uses ev_qmp
Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---
tools/libxl/libxl_usb.c | 99 +++++++++++++++++++++++++++++++++--------
1 file changed, 81 insertions(+), 18 deletions(-)
diff --git a/tools/libxl/libxl_usb.c b/tools/libxl/libxl_usb.c
index 92eeeb27f0..6b3e388a18 100644
--- a/tools/libxl/libxl_usb.c
+++ b/tools/libxl/libxl_usb.c
@@ -397,26 +397,25 @@ static int libxl__device_usbctrl_del_hvm(libxl__gc *gc,
}
/* Send qmp commands to create a usb device in qemu. */
-static int libxl__device_usbdev_add_hvm(libxl__gc *gc, uint32_t domid,
+static int libxl__device_usbdev_add_hvm(libxl__gc *gc, libxl__ev_qmp *qmp,
libxl_device_usbdev *usbdev)
{
- flexarray_t *qmp_args;
+ libxl__json_object *qmp_args = NULL;
- qmp_args = flexarray_make(gc, 12, 1);
- flexarray_append_pair(qmp_args, "id",
- GCSPRINTF("xenusb-%d-%d",
- usbdev->u.hostdev.hostbus,
- usbdev->u.hostdev.hostaddr));
- flexarray_append_pair(qmp_args, "driver", "usb-host");
- flexarray_append_pair(qmp_args, "bus",
- GCSPRINTF("xenusb-%d.0", usbdev->ctrl));
- flexarray_append_pair(qmp_args, "port", GCSPRINTF("%d", usbdev->port));
- flexarray_append_pair(qmp_args, "hostbus",
- GCSPRINTF("%d", usbdev->u.hostdev.hostbus));
- flexarray_append_pair(qmp_args, "hostaddr",
- GCSPRINTF("%d", usbdev->u.hostdev.hostaddr));
-
- return libxl__qmp_run_command_flexarray(gc, domid, "device_add", qmp_args);
+ libxl__qmp_param_add_string(gc, &qmp_args, "id",
+ GCSPRINTF("xenusb-%d-%d", usbdev->u.hostdev.hostbus,
+ usbdev->u.hostdev.hostaddr));
+ libxl__qmp_param_add_string(gc, &qmp_args, "driver", "usb-host");
+ libxl__qmp_param_add_string(gc, &qmp_args, "bus",
+ GCSPRINTF("xenusb-%d.0", usbdev->ctrl));
+ libxl__qmp_param_add_string(gc, &qmp_args, "port",
+ GCSPRINTF("%d", usbdev->port));
+ libxl__qmp_param_add_string(gc, &qmp_args, "hostbus",
+ GCSPRINTF("%d", usbdev->u.hostdev.hostbus));
+ libxl__qmp_param_add_string(gc, &qmp_args, "hostaddr",
+ GCSPRINTF("%d", usbdev->u.hostdev.hostaddr));
+
+ return libxl__ev_qmp_send(gc, qmp, "device_add", qmp_args);
}
/* Send qmp commands to delete a usb device in qemu. */
@@ -1641,6 +1640,13 @@ static int usbback_dev_assign(libxl__gc *gc, const char
*busid)
return rc;
}
+static void device_usbdev_add_qmp_cb(libxl__egc *egc,
+ libxl__ev_qmp *qmp, const libxl__json_object *r, int rc);
+static void device_usbdev_add_timeout(libxl__egc *egc,
+ libxl__ev_time *ev, const struct timeval *requested_abs, int rc);
+static void device_usbdev_add_done(libxl__egc *egc,
+ libxl__ao_device *aodev, int rc);
+
/* AO operation to add a usb device.
*
* Generally, it does:
@@ -1667,9 +1673,14 @@ static void libxl__device_usbdev_add(libxl__egc *egc,
uint32_t domid,
int num_assigned;
libxl_device_usbctrl usbctrl;
char *busid;
+ bool has_callback = false;
libxl_device_usbctrl_init(&usbctrl);
+ /* Store *usbdev to be used by callbacks */
+ aodev->device_config = usbdev;
+ aodev->device_type = &libxl__usbdev_devtype;
+
/* Currently only support adding USB device from Dom0 backend.
* So, if USB controller is specified, check its backend domain,
* if it's not Dom0, report error.
@@ -1753,12 +1764,22 @@ static void libxl__device_usbdev_add(libxl__egc *egc,
uint32_t domid,
aodev->update_json);
if (rc) goto out;
- rc = libxl__device_usbdev_add_hvm(gc, domid, usbdev);
+ rc = libxl__ev_time_register_rel(ao, &aodev->timeout,
+ device_usbdev_add_timeout,
+ LIBXL_QMP_CMD_TIMEOUT * 1000);
+ if (rc) goto out;
+
+ aodev->qmp.ao = ao;
+ aodev->qmp.domid = domid;
+ aodev->qmp.callback = device_usbdev_add_qmp_cb;
+ aodev->qmp.payload_fd = -1;
+ rc = libxl__device_usbdev_add_hvm(gc, &aodev->qmp, usbdev);
if (rc) {
libxl__device_usbdev_remove_xenstore(gc, domid, usbdev,
LIBXL_USBCTRL_TYPE_DEVICEMODEL);
goto out;
}
+ has_callback = true;
break;
default:
LOGD(ERROR, domid, "Unsupported usb controller type");
@@ -1770,6 +1791,48 @@ static void libxl__device_usbdev_add(libxl__egc *egc,
uint32_t domid,
out:
libxl_device_usbctrl_dispose(&usbctrl);
+ /* Only call _done if no callback have been setup */
+ if (!has_callback)
+ device_usbdev_add_done(egc, aodev, rc); /* must be last */
+}
+
+static void device_usbdev_add_timeout(libxl__egc *egc,
+ libxl__ev_time *ev,
+ const struct timeval *requested_abs,
+ int rc)
+{
+ EGC_GC;
+ libxl__ao_device *aodev = CONTAINER_OF(ev, *aodev, timeout);
+
+ if (rc == ERROR_TIMEDOUT)
+ LOGD(ERROR, aodev->qmp.domid,
+ "Adding usbdev to QEMU timed out");
+ device_usbdev_add_qmp_cb(egc, &aodev->qmp, NULL, rc);
+}
+
+static void device_usbdev_add_qmp_cb(libxl__egc *egc,
+ libxl__ev_qmp *qmp,
+ const libxl__json_object *r,
+ int rc)
+{
+ EGC_GC;
+ libxl__ao_device *aodev = CONTAINER_OF(qmp, *aodev, qmp);
+ libxl_device_usbdev *const usbdev = aodev->device_config;
+
+ if (rc)
+ libxl__device_usbdev_remove_xenstore(gc, qmp->domid,
+ usbdev, LIBXL_USBCTRL_TYPE_DEVICEMODEL);
+ device_usbdev_add_done(egc, aodev, rc); /* must be last */
+}
+
+static void device_usbdev_add_done(libxl__egc *egc,
+ libxl__ao_device *aodev,
+ int rc)
+{
+ EGC_GC;
+
+ libxl__ev_time_deregister(gc, &aodev->timeout);
+ libxl__ev_qmp_dispose(gc, &aodev->qmp);
aodev->rc = rc;
aodev->callback(egc, aodev);
}
--
Anthony PERARD
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