virDomainNetFindIdx no longer returns info whether device was not found,
or there was multiple matches. Additionally it already handle error
reporting. Introduce virDomainHasNet which does a simple task, without
implicit error reporting.
Signed-off-by: NMarek Marczykowski-Górecki <marmarek@invisiblethingslab.com>

Signed-off-by: NMarek Marczykowski-Górecki <marmarek@invisiblethingslab.com>

In Xen>=4.3, libxl supports new syntax for USB devices:
usbdevice=[ "DEVICE", "DEVICE", ... ]
Add support for that in xenconfig driver. When only one device is
defined, keep using old syntax for backward compatibility.

Adjust tests for changed options order.
Signed-off-by: NMarek Marczykowski-Górecki <marmarek@invisiblethingslab.com>

Signed-off-by: NMarek Marczykowski-Górecki <marmarek@invisiblethingslab.com>

Now that the network driver lock is ash heap of history,
we can use more of networkObjFromNetwork().
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

While in previous commits there were some places that relied on
the big lock, in this file there's no such place and the big
driver lock can be dropped completely. Yay!
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Well, if 'everywhere' is defined as that part of the driver code
that serves virNetwork* APIs. Again, we lower layers already have
their locks, so there's no point doing big lock.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Now that we have fine grained locks, there's no need to
lock the whole driver. We can rely on self-locking APIs.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

In order to drop network driver lock, lets annotate which
structure items are immutable, which have self-locking
APIs and so on.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

This is not an immutable pointer and can change during lifetime.
Therefore, in order to drop network driver lock, we must use an
internal accessor which does not lock the network driver yet, but
it will soon. Now it merely returns an referenced object.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Well, network driver code has the driver accessible as a global
variable. This makes any rework hard, as it's unclear where the
variable is accessed and/or modified. Lets just pass the driver
as a parameter to all functions where needed.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

A helper that never returns an error and treats bits out of bitmap range
as false.

Use it everywhere we use ignore_value on virBitmapGetBit, or loop over
the bitmap size.

The version attribute in redirdev filters refers to the revision
of the device, not the version of the USB protocol.

Explicitly state that this is not the USB protocol and remove references
to those round version numbers that resemble USB protocol versions.

https://bugzilla.redhat.com/show_bug.cgi?id=1177237

for memory limits since unset ones are no longer zero
Signed-off-by: NMaxim Nestratov <mnestratov@parallels.com>

This NIC model is supported on hardware version 8 and newer and libvirt
ESX driver does support those.

For VBOX it's most likely that the connection is vbox:///session and it
runs with local non-root account. This caused permission denied when
LOCALSTATEDIR was used to create temp file. This patch makes use of the
virGetUserCacheDirectory to address this problem for non-root users.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Commit c9027d8f added a detection of NIC HW features, but some of them
are not available in old kernel.  Very old kernels lack enum
ethtool_flags and even if this enum is present, not all values are
available for all kernels.  To be sure that we have everything in kernel
that we need, we must check for existence of most of that flags, because
only few of them were defined at first.

Also to successfully build libvirt with older kernel we need to include
<linux/types.h> before <linux/ethtool.h> to have __u32 and friends
defined.
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

as soon as x32 architecture is also supported

We've never formatted them on the qemu command line.

https://bugzilla.redhat.com/show_bug.cgi?id=1164053

Coverity notes in xenapiDomainGetXMLDesc that 'vms' is dereferenced
a few times before a "if (vms) xen_vm_set_free(vms);" call is made.
Since we'd exit out much sooner if the fetch of the vms failed, just
remove the unnecessary "if (vms)" check.

Coverity complains that "net_set" is compared to NULL before calling
xen_network_set_free, but used rather liberally before that.  While
I was looking at the code I also noted that if the virAsprintfQuiet
fails, then we leak our structures - so I added those too.

Coverity points out that the return from virDomainDefParseString is
not checked in xenapiDomainCreateXML like it should be which could
end up in a NULL pointer dereference

Coverity points out that check (def->uuid) has no effect since it's not
a pointer, rather an array of characters.   Just remove the extranous check.

Since inception.  Coverity complains that the code checks "(record ==
NULL && !session->ok)", but doesn't check (record != NULL) before
dereferencing at "record->is_a_template"

Commit id 'c9027d8f' added parsing of the CapNet for offload SRIOV NIC
discovery, but forgot to free the nodes

https://bugzilla.redhat.com/show_bug.cgi?id=1135491

$ virsh iothread --help

  NAME
    iothreadpin - control domain IOThread affinity

  SYNOPSIS
    iothreadpin <domain> <iothread> <cpulist> [--config] [--live] [--current]

  DESCRIPTION
    Pin domain IOThreads to host physical CPUs.

  OPTIONS
    [--domain] <string>  domain name, id or uuid
    [--iothread] <number>  IOThread ID number
    [--cpulist] <string>  host cpu number(s) to set
    --config         affect next boot
    --live           affect running domain
    --current        affect current domain

Using the output from iothreadsinfo, allow changing the pinned CPUs for
a single IOThread.

$ virsh iothreadsinfo $dom
 IOThread ID    CPU Affinity
---------------------------------------------------
 1               2
 2               3
 3               0-1

$ virsh iothreadpin $dom 3 0-2

Then view the change

$ virsh iothreadsinfo $dom
 IOThread ID    CPU Affinity
---------------------------------------------------
 1               2
 2               3
 3               0-2

If an invalid value is supplied or require option missing,
then an error will be displayed:

$ virsh iothreadpin $dom 4 3
error: invalid argument: iothread value out of range 4 > 3

$ virsh iothreadpin $dom 3
error: command 'iothreadpin' requires <cpulist> option

Add qemuDomainPinIOThread to handle setting the CPU affinity
for a specific IOThread

https://bugzilla.redhat.com/show_bug.cgi?id=1135491

More or less a virtual copy of the existing virDomainVcpuPin{Add|Del} API's.

NB: The IOThreads implementation "reused" the virDomainVcpuPinDefPtr
since it provided everything necessary - an "id" and a "map" for each
thread id configured.

Implement the remote plumbing.

Add virDomainPinIOThread to allow setting the CPU affinity for a specific
IOThread based on the output generated from virDomainGetIOThreadsInfo

The API supports updating both the --live domain and the --config data

This patch turns both virNetworkObjFindByUUID() and
virNetworkObjFindByName() to return an referenced object so that
even if caller unlocks it, it's for sure that object won't
disappear meanwhile. Especially if the object (in general) is
locked and unlocked during the caller run.
Moreover, this commit is nicely small, since the object unrefing
can be done in virNetworkObjEndAPI().
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Every API that touches internal structure of the object must lock
the object first. Not every API that has the object as an
argument needs to do that though. Some APIs just pass the object
to lower layers which, however, must lock the object then. Look
at the code, you'll get my meaning soon.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

This is going to be needed later, when some functions already
have the virNetworkObjList object already locked and need to
lookup a object to work on. As an example of such function is
virNetworkAssignDef(). The other use case might be in
virNetworkObjListForEach() callback.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Later we can turn APIs to lock the object if needed instead of
relying on caller to mutually exclude itself (probably done by
locking a big lock anyway).
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

So far, this is pure code replacement. But once we introduce
reference counting to virNetworkObj this will be more handy as
there'll be only one function to change: virNetworkObjEndAPI().
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

So far, this is pure code replacement. But once we introduce
reference counting to virNetworkObj this will be more handy as
there'll be only one function to change: virNetworkObjEndAPI().
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

So far, this is pure code replacement. But once we introduce
reference counting to virNetworkObj this will be more handy as
there'll be only one function to change: virNetworkObjEndAPI().
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

This is practically copy of qemuDomObjEndAPI. The reason why is
it so widely available is to avoid code duplication, since the
function is going to be called from our bridge driver, test
driver and parallels driver too.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

So far it's just a structure which happens to have 'Obj' in its
name, but otherwise it not related to virObject at all. No
reference counting, not virObjectLock(), nothing.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>