In order to allow libvirt to create and start new mediated devices, we
need to be able to verify that the device has been started. In order to
do this, we'll need to save the UUID of newly-discovered devices within
the virNodeDevCapMdev structure. This allows us to search the device
list by UUID and verify whether the expected device has been started.
Signed-off-by: Jonathon Jongsma <jjongsma@xxxxxxxxxx>
---
src/conf/node_device_conf.c | 1 +
src/conf/node_device_conf.h | 1 +
src/node_device/node_device_udev.c | 5 ++---
3 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/src/conf/node_device_conf.c b/src/conf/node_device_conf.c
index b1dfe81653..06e5924bef 100644
--- a/src/conf/node_device_conf.c
+++ b/src/conf/node_device_conf.c
@@ -2214,6 +2214,7 @@ virNodeDevCapsDefFree(virNodeDevCapsDefPtr caps)
break;
case VIR_NODE_DEV_CAP_MDEV:
VIR_FREE(data->mdev.type);
+ VIR_FREE(data->mdev.uuid);
for (i = 0; i < data->mdev.nattributes; i++)
virMediatedDeviceAttrFree(data->mdev.attributes[i]);
VIR_FREE(data->mdev.attributes);
diff --git a/src/conf/node_device_conf.h b/src/conf/node_device_conf.h
index e3e1e788d4..9b8c7aadea 100644
--- a/src/conf/node_device_conf.h
+++ b/src/conf/node_device_conf.h
@@ -141,6 +141,7 @@ typedef virNodeDevCapMdev *virNodeDevCapMdevPtr;
struct _virNodeDevCapMdev {
char *type;
unsigned int iommuGroupNumber;
+ char *uuid;
virMediatedDeviceAttrPtr *attributes;
size_t nattributes;
};
diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
index 386f23ef3a..bdf0b03add 100644
--- a/src/node_device/node_device_udev.c
+++ b/src/node_device/node_device_udev.c
@@ -1013,7 +1013,6 @@ udevProcessMediatedDevice(struct udev_device *dev,
virNodeDeviceDefPtr def)
{
int ret = -1;
- const char *uuidstr = NULL;
int iommugrp = -1;
char *linkpath = NULL;
char *canonicalpath = NULL;
@@ -1041,8 +1040,8 @@ udevProcessMediatedDevice(struct udev_device *dev,
data->type = g_path_get_basename(canonicalpath);
- uuidstr = udev_device_get_sysname(dev);
- if ((iommugrp = virMediatedDeviceGetIOMMUGroupNum(uuidstr)) < 0)
+ data->uuid = g_strdup(udev_device_get_sysname(dev));
+ if ((iommugrp = virMediatedDeviceGetIOMMUGroupNum(data->uuid)) < 0)
goto cleanup;
if (udevGenerateDeviceName(dev, def, NULL) != 0)
--
2.21.3
