Commit Graph

303 Commits

Author SHA1 Message Date
Erik Skultety
159be14d9c nodedev: Fix double unlock of the driver on udevEnumerateDevices failure
Commit @4cb719b2dc moved the driver locks around since these have become
unnecessary at spots where the code handles now self-lockable object
list, but missed the possible double unlock if udevEnumerateDevices
fails, because at that point the driver lock had been already dropped.

Signed-off-by: Erik Skultety <eskultet@redhat.com>
2017-07-28 10:52:28 +02:00
John Ferlan
4cb719b2dc nodedev: Remove driver locks around object list mgmt code
Since virnodedeviceobj now has a self-lockable hash table, there's no
need to lock the table from the driver for processing. Thus remove the
locks from the driver for NodeDeviceObjList mgmt.

This includes the test driver as well.
2017-07-24 12:19:34 -04:00
John Ferlan
8f6679d9f6 nodedev: Remove @create from virNodeDeviceObjListGetParentHost
The only callers to this function are from CreateXML paths now, so
let's just remove the unnecessary parameter.
2017-07-24 12:19:34 -04:00
John Ferlan
5ba2ce658b nodedev: Alter node device deletion logic
Alter the node device deletion logic to make use of the parent field
from the obj->def rather than call virNodeDeviceObjListGetParentHost.
As it turns out the saved @def won't have parent_wwnn/wwpn or
parent_fabric_wwn, so the only logical path would be to call
virNodeDeviceObjListGetParentHostByParent which we can accomplish
directly via virNodeDeviceObjListFindByName.
2017-07-24 12:19:34 -04:00
John Ferlan
0a957dd181 nodedev: Fix call to virNodeDeviceObjListFree in nodeStateReload
Commit id '9c5d98fd8' missed changing this call to use driver->devs
rather than @driver->devs.
2017-07-18 07:19:05 -04:00
John Ferlan
dae23ec345 nodedev: Convert virNodeDeviceObj to use virObjectLockable
Now that we have a bit more control, let's convert our object into
a lockable object and let that magic handle the create and lock/unlock.

This also involves creating a virNodeDeviceEndAPI in order to handle
the object cleanup for API's that use the Add or Find API's in order
to get a locked/reffed object. The EndAPI will unlock and unref the
object returning NULL to indicate to the caller to not use the obj.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-07-17 10:40:24 -04:00
John Ferlan
1c7bc64ef3 nodedev: Introduce virNodeDeviceObjListFindSCSIHostByWWNs
In an overall effort to privatize access to virNodeDeviceObj and
virNodeDeviceObjList into the virnodedeviceobj module, move the
object list parsing from node_device_driver and replace with a
call to a virnodedeviceobj helper. This follows other similar
APIs/helpers which peruse the object list looking for some specific
data in order to get/return an @device (virNodeDevice) object to
the caller.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-07-17 10:40:24 -04:00
John Ferlan
12fa16eb98 nodedev: Introduce virNodeDeviceGetSCSIHostCaps
We're about to move the call to nodeDeviceSysfsGetSCSIHostCaps from
node_device_driver into virnodedeviceobj, so move the guts of the code
from the driver specific node_device_linux_sysfs into its own API
since virnodedeviceobj cannot callback into the driver.

Nothing in the code deals with sysfs anyway, as that's hidden by the
various virSCSIHost* and virVHBA* utility function calls.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-07-17 10:40:24 -04:00
John Ferlan
881a486a7d nodedev: Alter node device obj list function names
Ensure that any function that walks the node device object list is prefixed
by virNodeDeviceObjList.

Also, modify the @filter param name for virNodeDeviceObjListExport to
be @aclfilter.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-07-17 10:40:24 -04:00
John Ferlan
9c5d98fd83 nodedev: Introduce virNodeDeviceObjListNew
In preparation to make things private, make the ->devs be pointers to a
virNodeDeviceObjList and then manage everything inside virnodedeviceobj

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-07-17 10:40:24 -04:00
John Ferlan
aa6e856b95 nodedev: Use consistent names for driver variables
A virNodeDeviceObjPtr is an @obj

A virNodeDeviceObjListPtr is a @devs

A virNodeDevicePtr is a @device

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-07-17 10:40:24 -04:00
John Ferlan
87e50c9cea nodedev: Alter virNodeDeviceObjRemove
Rather than passing the object to be removed by reference, pass by value
and then let the caller decide whether or not the object should be free'd
and how to handle the logic afterwards. This includes free'ing the object
and/or setting the local variable to NULL to prevent subsequent unexpected
usage (via something like virNodeDeviceObjRemove in testNodeDeviceDestroy).

For now this function will just handle the remove of the object from the
list for which it was placed during virNodeDeviceObjAssignDef.

This essentially reverts logic from commit id '61148074' that free'd the
device entry on list, set *dev = NULL and returned. Thus fixing a bug in
node_device_hal.c/dev_refresh() which would never call dev_create(udi)
since @dev would have been set to NULL.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-07-17 10:40:24 -04:00
John Ferlan
045b75c515 nodedev: Add check for NULL obj before call Unlock
Commit id '95ea171b' was a bit too aggressive in removing the if (obj)
check since cleanup is reachable after Unlock and obj = NULL.
2017-06-28 09:03:07 -04:00
John Ferlan
2065499b60 events: Avoid double free possibility on remote call failure
If a remote call fails during event registration (more than likely from
a network failure or remote libvirtd restart timed just right), then when
calling the virObjectEventStateDeregisterID we don't want to call the
registered @freecb function because that breaks our contract that we
would only call it after succesfully returning.  If the @freecb routine
were called, it could result in a double free from properly coded
applications that free their opaque data on failure to register, as seen
in the following details:

    Program terminated with signal 6, Aborted.
    #0  0x00007fc45cba15d7 in raise
    #1  0x00007fc45cba2cc8 in abort
    #2  0x00007fc45cbe12f7 in __libc_message
    #3  0x00007fc45cbe86d3 in _int_free
    #4  0x00007fc45d8d292c in PyDict_Fini
    #5  0x00007fc45d94f46a in Py_Finalize
    #6  0x00007fc45d960735 in Py_Main
    #7  0x00007fc45cb8daf5 in __libc_start_main
    #8  0x0000000000400721 in _start

The double dereference of 'pyobj_cbData' is triggered in the following way:

    (1) libvirt_virConnectDomainEventRegisterAny is invoked.
    (2) the event is successfully added to the event callback list
        (virDomainEventStateRegisterClient in
        remoteConnectDomainEventRegisterAny returns 1 which means ok).
    (3) when function remoteConnectDomainEventRegisterAny is hit,
        network connection disconnected coincidently (or libvirtd is
        restarted) in the context of function 'call' then the connection
        is lost and the function 'call' failed, the branch
        virObjectEventStateDeregisterID is therefore taken.
    (4) 'pyobj_conn' is dereferenced the 1st time in
        libvirt_virConnectDomainEventFreeFunc.
    (5) 'pyobj_cbData' (refered to pyobj_conn) is dereferenced the
         2nd time in libvirt_virConnectDomainEventRegisterAny.
    (6) the double free error is triggered.

Resolve this by adding a @doFreeCb boolean in order to avoid calling the
freeCb in virObjectEventStateDeregisterID for any remote call failure in
a remoteConnect*EventRegister* API. For remoteConnect*EventDeregister* calls,
the passed value would be true indicating they should run the freecb if it
exists; whereas, it's false for the remote call failure path.

Patch based on the investigation and initial patch posted by
fangying <fangying1@huawei.com>.
2017-06-25 08:16:04 -04:00
John Ferlan
5d3994d822 nodedev: Remove privateData from virNodeDeviceObj
It was only ever used in node_device_hal.c which really never used it
anyway since the NODE_DEV_UDI was never referenced.  Remove free_udi()
and @privData as well as the references to obj->privateData & obj->privateFree.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-06-03 08:34:35 -04:00
John Ferlan
922af89e44 nodedev: Introduce virNodeDeviceObjGetDef
In preparation for privatizing the virNodeDeviceObj - create an accessor
for the @def field and then use it for various callers.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-06-03 08:34:35 -04:00
John Ferlan
95ea171b39 nodedev: Create helper for finding by name in driver
Create nodeDeviceObjFindByName which will perform the corresponding
virNodeDeviceObjFindByName call for various node_device_driver callers
rather than having the same repetitive code.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-06-03 08:34:34 -04:00
John Ferlan
7c40ed4a84 nodedev: Alter param to nodeDeviceUpdateCaps
Rather than taking an virNodeDeviceObjPtr and dereffing the obj->def,
just pass the def.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-06-03 08:34:34 -04:00
John Ferlan
381bbfbbb6 nodedev: Alter param to nodeDeviceUpdateDriverName
Rather than taking an virNodeDeviceObjPtr and dereffing the obj->def,
just pass the def.

Also check for an error in the function to have the calling function goto
cleanup on error.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-06-03 08:34:34 -04:00
John Ferlan
18c551f378 nodedev: Cleanup driver code and prototypes
Alter the node_device_driver source and prototypes to follow more
recent code style guidelines w/r/t spacing between functions, format
of the function, and the prototype definitions.

While the new names for nodeDeviceUpdateCaps, nodeDeviceUpdateDriverName,
and nodeDeviceGetTime don't follow exactly w/r/t a "vir" prefix, they
do follow other driver nomenclature style.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-06-03 08:34:34 -04:00
Erik Skultety
5970b13982 udev: Fix build on older platforms
Caused by commit @d1eea6c1 due to the missing symbol on older platforms.

Signed-off-by: Erik Skultety <eskultet@redhat.com>
2017-05-31 13:28:24 +02:00
ning.bo
d1eea6c12a nodedev: Increase the netlink socket buffer size to the one used by udev
When a number of SRIOV VFs (up to 128 on Intel XL710) is created:
for i in `seq 0 1`; do
  echo 63 > /sys/class/net/<interface>/device/sriov_numvfs
done

libvirtd will then report "udev_monitor_receive_device returned NULL"
error because the netlink socket buffer is not big enough (using GDB on
libudev confirmed this with ENOBUFFS) and thus some udev events were
dropped. This results in some devices being missing in the nodedev-list
output. This patch overrides the system's rmem_max limit but for that,
we need to make sure we've got root privileges.

https://bugzilla.redhat.com/show_bug.cgi?id=1450960

Signed-off-by: ning.bo <ning.bo9@zte.com.cn>
Signed-off-by: Erik Skultety <eskultet@redhat.com>
2017-05-29 15:57:04 +02:00
Bjoern Walk
bb2adfe934 node_device: introduce new capability FC_RPORT
Similar to scsi_host and fc_host, there is a relation between a
scsi_target and its transport specific fc_remote_port. Let's expose this
relation and relevant information behind it.

An example for a virsh nodedev-dumpxml:

    virsh # nodedev-dumpxml scsi_target0_0_0
    <device>
      <name>scsi_target0_0_0</name>
      <path>/sys/devices/[...]/host0/rport-0:0-0/target0:0:0</path>
      <parent>scsi_host0</parent>
      <capability type='scsi_target'>
        <target>target0:0:0</target>
        <capability type='fc_remote_port'>
          <rport>rport-0:0-0</rport>
          <wwpn>0x9d73bc45f0e21a86</wwpn>
        </capability>
      </capability>
    </device>

Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Signed-off-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
2017-05-26 10:44:05 -04:00
Bjoern Walk
b0ffd938d4 node_device: detect CCW devices
Make CCW devices available to the node_device driver. The devices are
already seen by udev so let's implement necessary code for detecting
them properly.

Topologically, CCW devices are similar to PCI devices, e.g.:

    +- ccw_0_0_1a2b
        |
        +- scsi_host0
            |
            +- scsi_target0_0_0
                |
                +- scsi_0_0_0_0

Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Signed-off-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
2017-05-26 10:44:05 -04:00
Marc Hartmayer
a9b98ecf4e node_device: Unlock obj in case of an error too
Unlock @obj in case of an error too.

Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
2017-05-26 10:44:05 -04:00
Marc Hartmayer
3e69217953 node_device: Use the @cap iterator variable
Since the switch statement is already using the deref'd @cap variable
and the VIR_NODE_DEV_CAP_NET case uses it, the SCSI_HOST and PCI_DEV
cases may as well use it too.

Suggested-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
2017-05-26 10:44:05 -04:00
Peter Krempa
8238fd6624 node: Don't return invalid pointers
Commit 4337bc57be introduced code that would in certain error paths
unref the last reference of a pointer, but return it.

Clear the pointers before returning them.
2017-05-26 14:21:52 +02:00
Yi Wang
d190424105 node_device: fix memory leak in nodeDeviceSysfsGetSCSIHostCaps
@tmp is leaked after the second call to virVHBAGetConfig within
virVHBAIsVportCapable code block because it wasn't freed after making the
first call to the function.

Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Signed-off-by: Erik Skultety <eskultet@redhat.com>
2017-05-26 13:16:36 +02:00
Erik Skultety
de4b46e1e1 nodedev: mdev: Fix build caused by symbol shadowing
GCC 4.6 complains about a local declaration shadowing a global symbol.

Signed-off-by: Erik Skultety <eskultet@redhat.com>
2017-05-18 14:56:13 +02:00
Erik Skultety
88ef73e13c nodedev: Introduce mdev capability for mediated devices
Start discovering the mediated devices on the host system and format the
attributes for the mediated device into the XML. Compared to the parent
device which reports generic information about the abstract mediated
devices types, a child device only reports the type name it has been
instantiated from and the IOMMU group number, since that's device
specific compared to the rest of the info that can be gathered about
mediated devices at the moment.
This patch introduces both the formatting and parsing routines, updates
nodedev.rng schema, adding a testcase as well.

The resulting mdev child device XML:
<device>
  <name>mdev_4b20d080_1b54_4048_85b3_a6a62d165c01</name>
  <path>/sys/devices/.../4b20d080-1b54-4048-85b3-a6a62d165c01</path>
  <parent>pci_0000_06_00_0</parent>
  <driver>
    <name>vfio_mdev</name>
  </driver>
  <capability type='mdev'>
    <type id='vendor_supplied_type_id'/>
    <iommuGroup number='NUM'/>
  <capability/>
<device/>

https://bugzilla.redhat.com/show_bug.cgi?id=1452072

Signed-off-by: Erik Skultety <eskultet@redhat.com>
2017-05-18 12:21:45 +02:00
Erik Skultety
500cbc066a nodedev: Introduce the mdev capability to a PCI parent device
The parent device needs to report the generic stuff about the supported
mediated devices types, like device API, available instances, type name,
etc. Therefore this patch introduces a new nested capability element of
type 'mdev_types' with the resulting XML of the following format:

<device>
  ...
  <capability type='pci'>
    ...
    <capability type='mdev_types'>
      <type id='vendor_supplied_id'>
        <name>optional_vendor_supplied_codename</name>
        <deviceAPI>vfio-pci</deviceAPI>
        <availableInstances>NUM</availableInstances>
      </type>
        ...
      <type>
        ...
      </type>
    </capability>
  </capability>
  ...
</device>

https://bugzilla.redhat.com/show_bug.cgi?id=1452072

Signed-off-by: Erik Skultety <eskultet@redhat.com>
2017-05-18 12:21:33 +02:00
Erik Skultety
4385df97fe nodedev: Introduce new mdev_types and mdev nodedev capabilities
The reason for introducing two capabilities, one for the device itself
(cap 'mdev') and one for the parent device listing the available types
('mdev_types'), is that we should be able to do
'virsh nodedev-list --cap' not only for existing mdev devices but also
for devices that support creation of mdev devices, since one day libvirt
might be actually able to create the mdev devices in an automated way
(just like we do for NPIV/vHBA).

https://bugzilla.redhat.com/show_bug.cgi?id=1452072

Signed-off-by: Erik Skultety <eskultet@redhat.com>
2017-05-18 12:20:15 +02:00
Erik Skultety
9347652142 nodedev: udevProcessPCI: Drop syspath variable
Since we have that information provided by @def which is not a private
object, there is really no need for the variable.

Signed-off-by: Erik Skultety <eskultet@redhat.com>
2017-04-24 12:37:37 +02:00
Erik Skultety
364c912cf3 nodedev: Make use of the compile-time missing enum in switch error
So udevGetDeviceDetails was one those functions using an enum in a
switch, but since it had a 'default' case, compiler didn't warn about an
unhandled enum. Moreover, the error about an unsupported device type
reported in the default case is unnecessary, since by the time we get
there, udevGetDeviceType (which was called before) already made sure
that any unrecognized device types had been handled properly.

Signed-off-by: Erik Skultety <eskultet@redhat.com>
2017-04-24 12:37:37 +02:00
John Ferlan
6f143cc5bb nodedev: Pass driver arg by ref
Alter virNodeDeviceObjListExport in order to pass the drivers->devs
by reference

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-04-10 07:36:26 -04:00
John Ferlan
d06d1a329d nodedev: Introduce virNodeDeviceObjGetNames
Unify the *ListDevice API into virnodedeviceobj.c from node_device_driver
and test_driver.  The only real difference between the two is that the test
driver doesn't call the aclfilter API. The name of the new API follows that
of other drivers to "GetNames".

NB: Change some variable names to match what they really are - consistency
with other drivers. Also added a clear of the input names.

This also allows virNodeDeviceObjHasCap to be static to virnodedeviceobj

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-04-10 07:36:23 -04:00
John Ferlan
be3c2dfd1a nodedev: Introduce virNodeDeviceObjNumOfDevices
Unify the NumOfDevices API into virnodedeviceobj.c from node_device_driver
and test_driver.  The only real difference between the two is that the test
driver doesn't call the aclfilter API.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-04-10 07:33:43 -04:00
John Ferlan
97e0d3c3c9 util: Rename virFileWaitForDevices
The function is actually in virutil.c, but prototyped in virfile.h.
This patch fixes that by renaming the function to virWaitForDevices,
adding the prototype in virutil.h and libvirt_private.syms, and then
changing the callers to use the new name.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-03-15 21:17:47 -04:00
John Ferlan
cbcfd09769 node: Replace variable named 'system' with 'syscap'
Changes in commit id 'dec6d9df' caused a compilation failure on a RHEL6
CI build environment. So just replace 'system' with 'syscap' as a name.

cc1: warnings being treated as errors
../../src/conf/node_device_conf.c: In function 'virNodeDevCapSystemParseXML':
../../src/conf/node_device_conf.c:1415: error: declaration of 'system' shadows a global declaration [-Wshadow]
2017-03-04 10:42:33 -05:00
John Ferlan
dec6d9df5f nodedev: Reduce virNodeDevCapDataPtr usage
Replace with more data specific pointer types.
2017-03-03 18:36:09 -05:00
John Ferlan
0a5cc56d92 conf: Use consistent function name prefixes for virnodedeviceobj
Use "virNodeDeviceObj" as a prefix for any external API in virnodedeviceobj
2017-03-03 18:36:09 -05:00
John Ferlan
bc20200e53 conf: Introduce virnodedeviceobj
Move all the NodeDeviceObj API's into their own module virnodedeviceobj
from the node_device_conf

Purely code motion at this point, plus adjustments to cleanly build.
2017-03-03 18:36:09 -05:00
Marc Hartmayer
3427b36cc1 node_device: Check return value for udev_new()
The comment was actually wrong as
https://www.freedesktop.org/software/systemd/man/udev_new.html#
mentions that on failure NULL is returned.  Also the same return value
is checked in src/interface/interface_backend_udev.c already.

Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
2017-02-20 14:44:27 +01:00
John Ferlan
7ad479d0bd nodedev: Rework virNodeDeviceGetParentHost
Rework the code to perform the various searches by parent, parent_wwnn/
parent_wwpn, parent_fabric_wwn, or vport capable in order to return the
'parent_host' number that is vHBA capable.

The former virNodeDeviceGetParentHost is renamed to add the ByParent
on it fixes an issue where if no parent was supplied in the XML to
create the vHBA, then virNodeDeviceFindByName was called with a NULL
second parameter which had bad results.

The reworked code will make the various calls to fetch the NPIV host
by the passed parameter options or if none are provided find a vport
capable NPIV HBA to perform the create. If the call is from the delete
path, then this option won't be allowed.

Each of virNodeDeviceGetParentHostBy* functions is now static, so
remove them external definitions.

A secondary benefit of this is the test_driver now can make use of
the new API to add some new tests to test the various creation options.
2017-02-19 06:45:09 -05:00
John Ferlan
ccb0d6e342 nodedev: Keep the node device lock longer in nodeDeviceDestroy
While perhaps improbable, it could be possible that after finding our
object that another thread running essentially in parallel could attempt
to delete the same vHBA.

So rather than dropping the lock right after finding the object, keep
the lock around while we drop the object lock and work on deleting the
object. Once the delete occurs we can safely drop the driver lock again.

Cleanup some of the usage of cleanup instead out for the goto label.
2017-02-19 06:45:09 -05:00
John Ferlan
03346def06 util: Move scsi_host specific functions from virutil
Create a virscsihost.c and place the functions there. That removes the
last #ifdef __linux__ from virutil.c.

Take the opporunity to also change the function names and in one case
the parameters slightly
2017-02-19 06:45:09 -05:00
John Ferlan
16416816c1 util: Create a new virvhba module and move/rename API's
Rather than have them mixed in with the virutil apis, create a separate
virvhba.c module and move the vHBA related calls into there. Soon there
will be more added.

Also modify the names of the functions and some arguments to be more
indicative of what is really happening. Adjust the callers respectively.

While I was changing fchosttest, rather than the non-descriptive names
test1...test6, rename them to match what the test is doing.
2017-02-19 06:45:09 -05:00
Marc-André Lureau
7f1bdec5fa nodedev: add drm capability
Add a new 'drm' capability for Direct Rendering Manager (DRM) devices,
providing device type information.

Teach the udev backend to populate those devices.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-02-17 15:47:58 +01:00
Marc-André Lureau
0809508ed2 nodedev: add <devnode> paths
Add new <devnode> top-level <device> element, that list the associated
/dev files. Distinguish the main /dev name from symlinks with a 'type'
attribute of value 'dev' or 'symlink'.

Update a test to check XML schema, and actually add it to the test list
since it was missing.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2017-02-17 15:47:58 +01:00
John Ferlan
4337bc57be nodedev: Return the parent for a virNodeDevicePtr struct
When the 'parent' was added to the virNodeDevicePtr structure
by commit id 'e8a4ea75a' the 'parent' field was not properly filled
in when a virGetNodeDevice call was made within driver/config code.
Only the device name was ever filled in. Fetching the parent required
a second trip via virNodeDeviceGetParent into the node device lookup
code was required in order to retrieve the specific parent field (and
still the parent field was never filled in although it was free'd).

Since we have the data when we initially call virGetNodeDevice from
within driver/node_config code - let's just fill in the parent field
as well for anyone that wants it without requiring another trip into
the node_device lookup just to get the parent.

This will allow API's such as virConnectListAllNodeDevices,
virNodeDeviceLookupByName, and virNodeDeviceLookupSCSIHostByWWN
to retrieve both name and parent in the returned virNodeDevicePtr.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-02-16 12:23:04 -05:00