[Xen-devel] [PATCH v1 2/2] libxl: add removing XS backend path for PV devices on domain destroy

[Oleksandr Grytsov <al1img@gmail.com>]

From: Oleksandr Grytsov <oleksandr_grytsov@epam.com>

Currently backend path is remove for specific devices: VBD, VIF, QDISK.
This commit adds removing backend path for: VDISPL, VSND, VINPUT.

Signed-off-by: Oleksandr Grytsov <oleksandr_grytsov@epam.com>
---
 tools/libxl/libxl_device.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/tools/libxl/libxl_device.c b/tools/libxl/libxl_device.c
index 1402b61a81..8ce70661e5 100644
--- a/tools/libxl/libxl_device.c
+++ b/tools/libxl/libxl_device.c
@@ -1477,7 +1477,7 @@ typedef struct libxl__ddomain_device {
  */
 typedef struct libxl__ddomain_guest {
     uint32_t domid;
-    int num_vifs, num_vbds, num_qdisks;
+    int num_qdisks;
     LIBXL_SLIST_HEAD(, struct libxl__ddomain_device) devices;
     LIBXL_SLIST_ENTRY(struct libxl__ddomain_guest) next;
 } libxl__ddomain_guest;
@@ -1530,8 +1530,7 @@ static void check_and_maybe_remove_guest(libxl__gc *gc,
 {
     assert(ddomain);
 
-    if (dguest != NULL &&
-        dguest->num_vifs + dguest->num_vbds + dguest->num_qdisks == 0) {
+    if (dguest != NULL && LIBXL_SLIST_FIRST(&dguest->devices) == NULL) {
         LIBXL_SLIST_REMOVE(&ddomain->guests, dguest, libxl__ddomain_guest,
                            next);
         LOGD(DEBUG, dguest->domid, "Removed domain from the list of active guests");
@@ -1573,9 +1572,6 @@ static int add_device(libxl__egc *egc, libxl__ao *ao,
     switch(dev->backend_kind) {
     case LIBXL__DEVICE_KIND_VBD:
     case LIBXL__DEVICE_KIND_VIF:
-        if (dev->backend_kind == LIBXL__DEVICE_KIND_VBD) dguest->num_vbds++;
-        if (dev->backend_kind == LIBXL__DEVICE_KIND_VIF) dguest->num_vifs++;
-
         GCNEW(aodev);
         libxl__prepare_ao_device(ao, aodev);
         /*
@@ -1619,11 +1615,11 @@ static int remove_device(libxl__egc *egc, libxl__ao *ao,
     int rc = 0;
 
     switch(ddev->dev->backend_kind) {
+    case LIBXL__DEVICE_KIND_VDISPL:
+    case LIBXL__DEVICE_KIND_VSND:
+    case LIBXL__DEVICE_KIND_VINPUT:
     case LIBXL__DEVICE_KIND_VBD:
     case LIBXL__DEVICE_KIND_VIF:
-        if (dev->backend_kind == LIBXL__DEVICE_KIND_VBD) dguest->num_vbds--;
-        if (dev->backend_kind == LIBXL__DEVICE_KIND_VIF) dguest->num_vifs--;
-
         GCNEW(aodev);
         libxl__prepare_ao_device(ao, aodev);
         /*
-- 
2.17.1


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