On 4/12/24 8:36 AM, Marc Hartmayer wrote:
From: Boris Fiuczynski <fiuczy@xxxxxxxxxxxxx>
When a mdev device is destroyed or stopped the udev remove event
handling needs to reset the active config data of the node object
representing a persisted mdev.
Reviewed-by: Marc Hartmayer <mhartmay@xxxxxxxxxxxxx>
Signed-off-by: Boris Fiuczynski <fiuczy@xxxxxxxxxxxxx>
Signed-off-by: Marc Hartmayer <mhartmay@xxxxxxxxxxxxx>
---
src/node_device/node_device_driver.h | 3 +++
src/util/virmdev.h | 4 ++++
src/conf/node_device_conf.c | 10 ++--------
src/node_device/node_device_driver.c | 13 +++++++++++++
src/node_device/node_device_udev.c | 1 +
src/util/virmdev.c | 20 ++++++++++++++++++++
src/libvirt_private.syms | 2 ++
7 files changed, 45 insertions(+), 8 deletions(-)
diff --git a/src/node_device/node_device_driver.h b/src/node_device/node_device_driver.h
index b3bc4b2e96ed..f195cfef9d49 100644
--- a/src/node_device/node_device_driver.h
+++ b/src/node_device/node_device_driver.h
@@ -197,3 +197,6 @@ int
nodeDeviceUpdate(virNodeDevice *dev,
const char *xmlDesc,
unsigned int flags);
+
+void
+nodeDeviceDefResetMdevActiveConfig(virNodeDeviceDef *def);
diff --git a/src/util/virmdev.h b/src/util/virmdev.h
index 853041ac0619..e8e69040e5d4 100644
--- a/src/util/virmdev.h
+++ b/src/util/virmdev.h
@@ -54,6 +54,10 @@ struct _virMediatedDeviceConfig {
size_t nattributes;
};
+void virMediatedDeviceConfigClear(virMediatedDeviceConfig *config);
+void virMediatedDeviceConfigFree(virMediatedDeviceConfig *config);
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(virMediatedDeviceConfig, virMediatedDeviceConfigFree);
As far as I can tell, this Free function is not actually used anywhere,
either in this patch or any following patches.
+
typedef struct _virMediatedDeviceType virMediatedDeviceType;
struct _virMediatedDeviceType {
char *id;
diff --git a/src/conf/node_device_conf.c b/src/conf/node_device_conf.c
index 5cfbd6a7eb72..897c67d6af91 100644
--- a/src/conf/node_device_conf.c
+++ b/src/conf/node_device_conf.c
@@ -2592,15 +2592,9 @@ virNodeDevCapsDefFree(virNodeDevCapsDef *caps)
g_free(data->sg.path);
break;
case VIR_NODE_DEV_CAP_MDEV:
- g_free(data->mdev.defined_config.type);
- g_free(data->mdev.active_config.type);
g_free(data->mdev.uuid);
- for (i = 0; i < data->mdev.defined_config.nattributes; i++)
- virMediatedDeviceAttrFree(data->mdev.defined_config.attributes[i]);
- g_free(data->mdev.defined_config.attributes);
- for (i = 0; i < data->mdev.active_config.nattributes; i++)
- virMediatedDeviceAttrFree(data->mdev.active_config.attributes[i]);
- g_free(data->mdev.active_config.attributes);
+ virMediatedDeviceConfigClear(&data->mdev.defined_config);
+ virMediatedDeviceConfigClear(&data->mdev.active_config);
g_free(data->mdev.parent_addr);
break;
case VIR_NODE_DEV_CAP_CSS_DEV:
diff --git a/src/node_device/node_device_driver.c b/src/node_device/node_device_driver.c
index d99b48138ebf..f623339dc973 100644
--- a/src/node_device/node_device_driver.c
+++ b/src/node_device/node_device_driver.c
@@ -2018,6 +2018,19 @@ nodeDeviceDefCopyFromMdevctl(virNodeDeviceDef *dst,
}
+/* A mediated device definition contains data from mdevctl about the active
+ * device. When the device is deactivated the active configuration data needs
+ * to be removed. */
+void
+nodeDeviceDefResetMdevActiveConfig(virNodeDeviceDef *def)
+{
+ if (def->caps->data.type != VIR_NODE_DEV_CAP_MDEV)
+ return;
+
+ virMediatedDeviceConfigClear(&def->caps->data.mdev.active_config);
+}
It doesn't feel necessary to introduce a short single-use function here.
I think it can just be inlined.
+
+
int
nodeDeviceSetAutostart(virNodeDevice *device,
int autostart)
diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
index 03ef0c14371a..3297bdd8d7ef 100644
--- a/src/node_device/node_device_udev.c
+++ b/src/node_device/node_device_udev.c
@@ -1467,6 +1467,7 @@ udevRemoveOneDeviceSysPath(const char *path)
if (virNodeDeviceObjIsPersistent(obj)) {
VIR_FREE(def->sysfs_path);
virNodeDeviceObjSetActive(obj, false);
+ nodeDeviceDefResetMdevActiveConfig(def);
} else {
VIR_DEBUG("Removing device '%s' with sysfs path '%s'",
def->name, path);
diff --git a/src/util/virmdev.c b/src/util/virmdev.c
index 992f3eb1b74c..6ecdbdf0ab77 100644
--- a/src/util/virmdev.c
+++ b/src/util/virmdev.c
@@ -516,6 +516,26 @@ void virMediatedDeviceAttrFree(virMediatedDeviceAttr *attr)
g_free(attr);
}
+void virMediatedDeviceConfigFree(virMediatedDeviceConfig *config)
+{
+ if (!config)
+ return;
+
+ virMediatedDeviceConfigClear(config);
+ g_free(config);
+}
+
+void virMediatedDeviceConfigClear(virMediatedDeviceConfig *config)
+{
+ size_t i = 0;
+
+ g_clear_pointer(&config->type, g_free);
+ for (i = 0; i < config->nattributes; i++)
+ virMediatedDeviceAttrFree(config->attributes[i]);
+ config->nattributes = 0;
+ g_clear_pointer(&config->attributes, g_free);
+}
+
#define MDEV_BUS_DIR "/sys/class/mdev_bus"
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 84e30b711c67..fd413949dae2 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2778,6 +2778,8 @@ virMacMapWriteFile;
# util/virmdev.h
virMediatedDeviceAttrFree;
virMediatedDeviceAttrNew;
+virMediatedDeviceConfigClear;
+virMediatedDeviceConfigFree;
virMediatedDeviceFree;
virMediatedDeviceGetIOMMUGroupDev;
virMediatedDeviceGetIOMMUGroupNum;
Reviewed-by: Jonathon Jongsma <jjongsma@xxxxxxxxxx>
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