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libvirt/src/util/virhostdev.c
Daniel P. Berrange 3cfa19da22 Replace Pci with PCI throughout 
Since it is an abbreviation, PCI should always be fully
capitalized or full lower case, never Pci.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2014-04-08 11:15:55 +01:00

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/* virhostdev.c: hostdev management
*
* Copyright (C) 2006-2007, 2009-2013 Red Hat, Inc.
* Copyright (C) 2006 Daniel P. Berrange
* Copyright (C) 2014 SUSE LINUX Products GmbH, Nuernberg, Germany.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Daniel P. Berrange <berrange@redhat.com>
* Author: Chunyan Liu <cyliu@suse.com>
*/
#include <config.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include "virhostdev.h"
#include "viralloc.h"
#include "virstring.h"
#include "virfile.h"
#include "virerror.h"
#include "virlog.h"
#include "virutil.h"
#include "virnetdev.h"
#include "configmake.h"
#define VIR_FROM_THIS VIR_FROM_NONE
VIR_LOG_INIT("util.hostdev");
#define HOSTDEV_STATE_DIR LOCALSTATEDIR "/run/libvirt/hostdevmgr"
static virHostdevManagerPtr manager; /* global hostdev manager, never freed */
static virClassPtr virHostdevManagerClass;
static void virHostdevManagerDispose(void *obj);
static virHostdevManagerPtr virHostdevManagerNew(void);
static int virHostdevManagerOnceInit(void)
{
if (!(virHostdevManagerClass = virClassNew(virClassForObject(),
"virHostdevManager",
sizeof(virHostdevManager),
virHostdevManagerDispose)))
return -1;
if (!(manager = virHostdevManagerNew()))
return -1;
return 0;
}
VIR_ONCE_GLOBAL_INIT(virHostdevManager)
static void
virHostdevManagerDispose(void *obj)
{
virHostdevManagerPtr hostdevMgr = obj;
if (!hostdevMgr)
return;
virObjectUnref(hostdevMgr->activePCIHostdevs);
virObjectUnref(hostdevMgr->inactivePCIHostdevs);
virObjectUnref(hostdevMgr->activeUSBHostdevs);
virObjectUnref(hostdevMgr->activeSCSIHostdevs);
VIR_FREE(hostdevMgr->stateDir);
}
static virHostdevManagerPtr
virHostdevManagerNew(void)
{
virHostdevManagerPtr hostdevMgr;
bool privileged = geteuid() == 0;
if (!(hostdevMgr = virObjectNew(virHostdevManagerClass)))
return NULL;
if ((hostdevMgr->activePCIHostdevs = virPCIDeviceListNew()) == NULL)
goto error;
if ((hostdevMgr->activeUSBHostdevs = virUSBDeviceListNew()) == NULL)
goto error;
if ((hostdevMgr->inactivePCIHostdevs = virPCIDeviceListNew()) == NULL)
goto error;
if ((hostdevMgr->activeSCSIHostdevs = virSCSIDeviceListNew()) == NULL)
goto error;
if (privileged) {
if (VIR_STRDUP(hostdevMgr->stateDir, HOSTDEV_STATE_DIR) < 0)
goto error;
if (virFileMakePath(hostdevMgr->stateDir) < 0) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("Failed to create state dir '%s'"),
hostdevMgr->stateDir);
goto error;
}
} else {
char *rundir = NULL;
mode_t old_umask;
if (!(rundir = virGetUserRuntimeDirectory()))
goto error;
if (virAsprintf(&hostdevMgr->stateDir, "%s/hostdevmgr", rundir) < 0) {
VIR_FREE(rundir);
goto error;
}
VIR_FREE(rundir);
old_umask = umask(077);
if (virFileMakePath(hostdevMgr->stateDir) < 0) {
umask(old_umask);
virReportError(VIR_ERR_OPERATION_FAILED,
_("Failed to create state dir '%s'"),
hostdevMgr->stateDir);
goto error;
}
umask(old_umask);
}
return hostdevMgr;
error:
virObjectUnref(hostdevMgr);
return NULL;
}
virHostdevManagerPtr
virHostdevManagerGetDefault(void)
{
if (virHostdevManagerInitialize() < 0)
return NULL;
return virObjectRef(manager);
}
static virPCIDeviceListPtr
virHostdevGetPCIHostDeviceList(virDomainHostdevDefPtr *hostdevs, int nhostdevs)
{
virPCIDeviceListPtr list;
size_t i;
if (!(list = virPCIDeviceListNew()))
return NULL;
for (i = 0; i < nhostdevs; i++) {
virDomainHostdevDefPtr hostdev = hostdevs[i];
virPCIDevicePtr dev;
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
continue;
if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
continue;
dev = virPCIDeviceNew(hostdev->source.subsys.u.pci.addr.domain,
hostdev->source.subsys.u.pci.addr.bus,
hostdev->source.subsys.u.pci.addr.slot,
hostdev->source.subsys.u.pci.addr.function);
if (!dev) {
virObjectUnref(list);
return NULL;
}
if (virPCIDeviceListAdd(list, dev) < 0) {
virPCIDeviceFree(dev);
virObjectUnref(list);
return NULL;
}
virPCIDeviceSetManaged(dev, hostdev->managed);
if (hostdev->source.subsys.u.pci.backend
== VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO) {
if (virPCIDeviceSetStubDriver(dev, "vfio-pci") < 0) {
virObjectUnref(list);
return NULL;
}
} else if (hostdev->source.subsys.u.pci.backend
== VIR_DOMAIN_HOSTDEV_PCI_BACKEND_XEN) {
if (virPCIDeviceSetStubDriver(dev, "pciback") < 0) {
virObjectUnref(list);
return NULL;
}
} else {
if (virPCIDeviceSetStubDriver(dev, "pci-stub") < 0) {
virObjectUnref(list);
return NULL;
}
}
}
return list;
}
/*
* virHostdevGetActivePCIHostDeviceList - make a new list with a *copy* of
* every virPCIDevice object that is found on the activePCIHostdevs
* list *and* is in the hostdev list for this domain.
*
* Return the new list, or NULL if there was a failure.
*
* Pre-condition: activePCIHostdevs is locked
*/
static virPCIDeviceListPtr
virHostdevGetActivePCIHostDeviceList(virHostdevManagerPtr mgr,
virDomainHostdevDefPtr *hostdevs,
int nhostdevs)
{
virPCIDeviceListPtr list;
size_t i;
if (!(list = virPCIDeviceListNew()))
return NULL;
for (i = 0; i < nhostdevs; i++) {
virDomainHostdevDefPtr hostdev = hostdevs[i];
virDevicePCIAddressPtr addr;
virPCIDevicePtr activeDev;
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
continue;
if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
continue;
addr = &hostdev->source.subsys.u.pci.addr;
activeDev = virPCIDeviceListFindByIDs(mgr->activePCIHostdevs,
addr->domain, addr->bus,
addr->slot, addr->function);
if (activeDev && virPCIDeviceListAddCopy(list, activeDev) < 0) {
virObjectUnref(list);
return NULL;
}
}
return list;
}
static int
virHostdevPCISysfsPath(virDomainHostdevDefPtr hostdev,
char **sysfs_path)
{
virPCIDeviceAddress config_address;
config_address.domain = hostdev->source.subsys.u.pci.addr.domain;
config_address.bus = hostdev->source.subsys.u.pci.addr.bus;
config_address.slot = hostdev->source.subsys.u.pci.addr.slot;
config_address.function = hostdev->source.subsys.u.pci.addr.function;
return virPCIDeviceAddressGetSysfsFile(&config_address, sysfs_path);
}
static int
virHostdevIsVirtualFunction(virDomainHostdevDefPtr hostdev)
{
char *sysfs_path = NULL;
int ret = -1;
if (virHostdevPCISysfsPath(hostdev, &sysfs_path) < 0)
return ret;
ret = virPCIIsVirtualFunction(sysfs_path);
VIR_FREE(sysfs_path);
return ret;
}
static int
virHostdevNetDevice(virDomainHostdevDefPtr hostdev, char **linkdev,
int *vf)
{
int ret = -1;
char *sysfs_path = NULL;
if (virHostdevPCISysfsPath(hostdev, &sysfs_path) < 0)
return ret;
if (virPCIIsVirtualFunction(sysfs_path) == 1) {
if (virPCIGetVirtualFunctionInfo(sysfs_path, linkdev,
vf) < 0)
goto cleanup;
} else {
if (virPCIGetNetName(sysfs_path, linkdev) < 0)
goto cleanup;
*vf = -1;
}
ret = 0;
cleanup:
VIR_FREE(sysfs_path);
return ret;
}
static int
virHostdevNetConfigVirtPortProfile(const char *linkdev, int vf,
virNetDevVPortProfilePtr virtPort,
const virMacAddr *macaddr,
const unsigned char *uuid,
bool associate)
{
int ret = -1;
if (!virtPort)
return ret;
switch (virtPort->virtPortType) {
case VIR_NETDEV_VPORT_PROFILE_NONE:
case VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH:
case VIR_NETDEV_VPORT_PROFILE_8021QBG:
case VIR_NETDEV_VPORT_PROFILE_LAST:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("virtualport type %s is "
"currently not supported on interfaces of type "
"hostdev"),
virNetDevVPortTypeToString(virtPort->virtPortType));
break;
case VIR_NETDEV_VPORT_PROFILE_8021QBH:
if (associate)
ret = virNetDevVPortProfileAssociate(NULL, virtPort, macaddr,
linkdev, vf, uuid,
VIR_NETDEV_VPORT_PROFILE_OP_CREATE, false);
else
ret = virNetDevVPortProfileDisassociate(NULL, virtPort,
macaddr, linkdev, vf,
VIR_NETDEV_VPORT_PROFILE_OP_DESTROY);
break;
}
return ret;
}
static int
virHostdevNetConfigReplace(virDomainHostdevDefPtr hostdev,
const unsigned char *uuid,
const char *stateDir)
{
char *linkdev = NULL;
virNetDevVlanPtr vlan;
virNetDevVPortProfilePtr virtPort;
int ret = -1;
int vf = -1;
int vlanid = -1;
bool port_profile_associate = true;
int isvf;
isvf = virHostdevIsVirtualFunction(hostdev);
if (isvf <= 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Interface type hostdev is currently supported on"
" SR-IOV Virtual Functions only"));
return ret;
}
if (virHostdevNetDevice(hostdev, &linkdev, &vf) < 0)
return ret;
vlan = virDomainNetGetActualVlan(hostdev->parent.data.net);
virtPort = virDomainNetGetActualVirtPortProfile(
hostdev->parent.data.net);
if (virtPort) {
if (vlan) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("direct setting of the vlan tag is not allowed "
"for hostdev devices using %s mode"),
virNetDevVPortTypeToString(virtPort->virtPortType));
goto cleanup;
}
ret = virHostdevNetConfigVirtPortProfile(linkdev, vf,
virtPort, &hostdev->parent.data.net->mac, uuid,
port_profile_associate);
} else {
/* Set only mac and vlan */
if (vlan) {
if (vlan->nTags != 1 || vlan->trunk) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("vlan trunking is not supported "
"by SR-IOV network devices"));
goto cleanup;
}
if (vf == -1) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("vlan can only be set for SR-IOV VFs, but "
"%s is not a VF"), linkdev);
goto cleanup;
}
vlanid = vlan->tag[0];
} else if (vf >= 0) {
vlanid = 0; /* assure any current vlan tag is reset */
}
ret = virNetDevReplaceNetConfig(linkdev, vf,
&hostdev->parent.data.net->mac,
vlanid, stateDir);
}
cleanup:
VIR_FREE(linkdev);
return ret;
}
/* @oldStateDir:
* For upgrade purpose:
* To an existing VM on QEMU, the hostdev netconfig file is originally stored
* in cfg->stateDir (/var/run/libvirt/qemu). Switch to new version, it uses new
* location (hostdev_mgr->stateDir) but certainly will not find it. In this
* case, try to find in the old state dir.
*/
static int
virHostdevNetConfigRestore(virDomainHostdevDefPtr hostdev,
const char *stateDir,
const char *oldStateDir)
{
char *linkdev = NULL;
virNetDevVPortProfilePtr virtPort;
int ret = -1;
int vf = -1;
bool port_profile_associate = false;
int isvf;
/* This is only needed for PCI devices that have been defined
* using <interface type='hostdev'>. For all others, it is a NOP.
*/
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI ||
hostdev->parent.type != VIR_DOMAIN_DEVICE_NET ||
!hostdev->parent.data.net)
return 0;
isvf = virHostdevIsVirtualFunction(hostdev);
if (isvf <= 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Interface type hostdev is currently supported on"
" SR-IOV Virtual Functions only"));
return ret;
}
if (virHostdevNetDevice(hostdev, &linkdev, &vf) < 0)
return ret;
virtPort = virDomainNetGetActualVirtPortProfile(
hostdev->parent.data.net);
if (virtPort) {
ret = virHostdevNetConfigVirtPortProfile(linkdev, vf, virtPort,
&hostdev->parent.data.net->mac,
NULL,
port_profile_associate);
} else {
ret = virNetDevRestoreNetConfig(linkdev, vf, stateDir);
if (ret < 0 && oldStateDir != NULL)
ret = virNetDevRestoreNetConfig(linkdev, vf, oldStateDir);
}
VIR_FREE(linkdev);
return ret;
}
int
virHostdevPreparePCIDevices(virHostdevManagerPtr hostdev_mgr,
const char *drv_name,
const char *dom_name,
const unsigned char *uuid,
virDomainHostdevDefPtr *hostdevs,
int nhostdevs,
unsigned int flags)
{
virPCIDeviceListPtr pcidevs = NULL;
int last_processed_hostdev_vf = -1;
size_t i;
int ret = -1;
if (!nhostdevs)
return 0;
virObjectLock(hostdev_mgr->activePCIHostdevs);
virObjectLock(hostdev_mgr->inactivePCIHostdevs);
if (!(pcidevs = virHostdevGetPCIHostDeviceList(hostdevs, nhostdevs)))
goto cleanup;
/* We have to use 9 loops here. *All* devices must
* be detached before we reset any of them, because
* in some cases you have to reset the whole PCI,
* which impacts all devices on it. Also, all devices
* must be reset before being marked as active.
*/
/* Loop 1: validate that non-managed device isn't in use, eg
* by checking that device is either un-bound, or bound
* to pci-stub.ko
*/
for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
virPCIDevicePtr other;
bool strict_acs_check = !!(flags & VIR_HOSTDEV_STRICT_ACS_CHECK);
if (!virPCIDeviceIsAssignable(dev, strict_acs_check)) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("PCI device %s is not assignable"),
virPCIDeviceGetName(dev));
goto cleanup;
}
/* The device is in use by other active domain if
* the dev is in list activePCIHostdevs.
*/
if ((other = virPCIDeviceListFind(hostdev_mgr->activePCIHostdevs, dev))) {
const char *other_drvname;
const char *other_domname;
virPCIDeviceGetUsedBy(other, &other_drvname, &other_domname);
if (other_drvname && other_domname)
virReportError(VIR_ERR_OPERATION_INVALID,
_("PCI device %s is in use by "
"driver %s, domain %s"),
virPCIDeviceGetName(dev),
other_drvname, other_domname);
else
virReportError(VIR_ERR_OPERATION_INVALID,
_("PCI device %s is already in use"),
virPCIDeviceGetName(dev));
goto cleanup;
}
}
/* Loop 2: detach managed devices (i.e. bind to appropriate stub driver) */
for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
if (virPCIDeviceGetManaged(dev) &&
virPCIDeviceDetach(dev, hostdev_mgr->activePCIHostdevs, NULL) < 0)
goto reattachdevs;
}
/* Loop 3: Now that all the PCI hostdevs have been detached, we
* can safely reset them */
for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
if (virPCIDeviceReset(dev, hostdev_mgr->activePCIHostdevs,
hostdev_mgr->inactivePCIHostdevs) < 0)
goto reattachdevs;
}
/* Loop 4: For SRIOV network devices, Now that we have detached the
* the network device, set the netdev config */
for (i = 0; i < nhostdevs; i++) {
virDomainHostdevDefPtr hostdev = hostdevs[i];
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
continue;
if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
continue;
if (hostdev->parent.type == VIR_DOMAIN_DEVICE_NET &&
hostdev->parent.data.net) {
if (virHostdevNetConfigReplace(hostdev, uuid,
hostdev_mgr->stateDir) < 0) {
goto resetvfnetconfig;
}
}
last_processed_hostdev_vf = i;
}
/* Loop 5: Now mark all the devices as active */
for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
if (virPCIDeviceListAdd(hostdev_mgr->activePCIHostdevs, dev) < 0)
goto inactivedevs;
}
/* Loop 6: Now remove the devices from inactive list. */
for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
virPCIDeviceListDel(hostdev_mgr->inactivePCIHostdevs, dev);
}
/* Loop 7: Now set the used_by_domain of the device in
* activePCIHostdevs as domain name.
*/
for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
virPCIDevicePtr dev, activeDev;
dev = virPCIDeviceListGet(pcidevs, i);
activeDev = virPCIDeviceListFind(hostdev_mgr->activePCIHostdevs, dev);
if (activeDev)
virPCIDeviceSetUsedBy(activeDev, drv_name, dom_name);
}
/* Loop 8: Now set the original states for hostdev def */
for (i = 0; i < nhostdevs; i++) {
virPCIDevicePtr dev;
virPCIDevicePtr pcidev;
virDomainHostdevDefPtr hostdev = hostdevs[i];
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
continue;
if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
continue;
dev = virPCIDeviceNew(hostdev->source.subsys.u.pci.addr.domain,
hostdev->source.subsys.u.pci.addr.bus,
hostdev->source.subsys.u.pci.addr.slot,
hostdev->source.subsys.u.pci.addr.function);
/* original states "unbind_from_stub", "remove_slot",
* "reprobe" were already set by pciDettachDevice in
* loop 2.
*/
if ((pcidev = virPCIDeviceListFind(pcidevs, dev))) {
hostdev->origstates.states.pci.unbind_from_stub =
virPCIDeviceGetUnbindFromStub(pcidev);
hostdev->origstates.states.pci.remove_slot =
virPCIDeviceGetRemoveSlot(pcidev);
hostdev->origstates.states.pci.reprobe =
virPCIDeviceGetReprobe(pcidev);
}
virPCIDeviceFree(dev);
}
/* Loop 9: Now steal all the devices from pcidevs */
while (virPCIDeviceListCount(pcidevs) > 0)
virPCIDeviceListStealIndex(pcidevs, 0);
ret = 0;
goto cleanup;
inactivedevs:
/* Only steal all the devices from activePCIHostdevs. We will
* free them in virObjectUnref().
*/
for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
virPCIDeviceListSteal(hostdev_mgr->activePCIHostdevs, dev);
}
resetvfnetconfig:
for (i = 0;
last_processed_hostdev_vf != -1 && i < last_processed_hostdev_vf; i++)
virHostdevNetConfigRestore(hostdevs[i], hostdev_mgr->stateDir, NULL);
reattachdevs:
for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
/* NB: This doesn't actually re-bind to original driver, just
* unbinds from the stub driver
*/
ignore_value(virPCIDeviceReattach(dev, hostdev_mgr->activePCIHostdevs,
NULL));
}
cleanup:
virObjectUnlock(hostdev_mgr->activePCIHostdevs);
virObjectUnlock(hostdev_mgr->inactivePCIHostdevs);
virObjectUnref(pcidevs);
return ret;
}
/*
* Pre-condition: inactivePCIHostdevs & activePCIHostdevs
* are locked
*/
static void
virHostdevReattachPCIDevice(virPCIDevicePtr dev, virHostdevManagerPtr mgr)
{
/* If the device is not managed and was attached to guest
* successfully, it must have been inactive.
*/
if (!virPCIDeviceGetManaged(dev)) {
if (virPCIDeviceListAdd(mgr->inactivePCIHostdevs, dev) < 0)
virPCIDeviceFree(dev);
return;
}
/* Wait for device cleanup if it is qemu/kvm */
if (STREQ(virPCIDeviceGetStubDriver(dev), "pci-stub")) {
int retries = 100;
while (virPCIDeviceWaitForCleanup(dev, "kvm_assigned_device")
&& retries) {
usleep(100*1000);
retries--;
}
}
if (virPCIDeviceReattach(dev, mgr->activePCIHostdevs,
mgr->inactivePCIHostdevs) < 0) {
virErrorPtr err = virGetLastError();
VIR_ERROR(_("Failed to re-attach PCI device: %s"),
err ? err->message : _("unknown error"));
virResetError(err);
}
virPCIDeviceFree(dev);
}
/* @oldStateDir:
* For upgrade purpose: see virHostdevNetConfigRestore
*/
void
virHostdevReAttachPCIDevices(virHostdevManagerPtr hostdev_mgr,
const char *drv_name,
const char *dom_name,
virDomainHostdevDefPtr *hostdevs,
int nhostdevs,
const char *oldStateDir)
{
virPCIDeviceListPtr pcidevs;
size_t i;
if (!nhostdevs)
return;
virObjectLock(hostdev_mgr->activePCIHostdevs);
virObjectLock(hostdev_mgr->inactivePCIHostdevs);
if (!(pcidevs = virHostdevGetActivePCIHostDeviceList(hostdev_mgr,
hostdevs,
nhostdevs))) {
virErrorPtr err = virGetLastError();
VIR_ERROR(_("Failed to allocate PCI device list: %s"),
err ? err->message : _("unknown error"));
virResetError(err);
goto cleanup;
}
/* Again 4 loops; mark all devices as inactive before reset
* them and reset all the devices before re-attach.
* Attach mac and port profile parameters to devices
*/
for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
virPCIDevicePtr activeDev = NULL;
/* delete the copy of the dev from pcidevs if it's used by
* other domain. Or delete it from activePCIHostDevs if it had
* been used by this domain.
*/
activeDev = virPCIDeviceListFind(hostdev_mgr->activePCIHostdevs, dev);
if (activeDev) {
const char *usedby_drvname;
const char *usedby_domname;
virPCIDeviceGetUsedBy(activeDev, &usedby_drvname, &usedby_domname);
if (STRNEQ_NULLABLE(drv_name, usedby_drvname) ||
STRNEQ_NULLABLE(dom_name, usedby_domname)) {
virPCIDeviceListDel(pcidevs, dev);
continue;
}
}
virPCIDeviceListDel(hostdev_mgr->activePCIHostdevs, dev);
}
/* At this point, any device that had been used by the guest is in
* pcidevs, but has been removed from activePCIHostdevs.
*/
/*
* For SRIOV net host devices, unset mac and port profile before
* reset and reattach device
*/
for (i = 0; i < nhostdevs; i++)
virHostdevNetConfigRestore(hostdevs[i], hostdev_mgr->stateDir,
oldStateDir);
for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
if (virPCIDeviceReset(dev, hostdev_mgr->activePCIHostdevs,
hostdev_mgr->inactivePCIHostdevs) < 0) {
virErrorPtr err = virGetLastError();
VIR_ERROR(_("Failed to reset PCI device: %s"),
err ? err->message : _("unknown error"));
virResetError(err);
}
}
while (virPCIDeviceListCount(pcidevs) > 0) {
virPCIDevicePtr dev = virPCIDeviceListStealIndex(pcidevs, 0);
virHostdevReattachPCIDevice(dev, hostdev_mgr);
}
virObjectUnref(pcidevs);
cleanup:
virObjectUnlock(hostdev_mgr->activePCIHostdevs);
virObjectUnlock(hostdev_mgr->inactivePCIHostdevs);
}
int
virHostdevUpdateActivePCIDevices(virHostdevManagerPtr mgr,
virDomainHostdevDefPtr *hostdevs,
int nhostdevs,
const char *drv_name,
const char *dom_name)
{
virDomainHostdevDefPtr hostdev = NULL;
virPCIDevicePtr dev = NULL;
size_t i;
int ret = -1;
if (!nhostdevs)
return 0;
virObjectLock(mgr->activePCIHostdevs);
virObjectLock(mgr->inactivePCIHostdevs);
for (i = 0; i < nhostdevs; i++) {
hostdev = hostdevs[i];
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
continue;
if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
continue;
dev = virPCIDeviceNew(hostdev->source.subsys.u.pci.addr.domain,
hostdev->source.subsys.u.pci.addr.bus,
hostdev->source.subsys.u.pci.addr.slot,
hostdev->source.subsys.u.pci.addr.function);
if (!dev)
goto cleanup;
virPCIDeviceSetManaged(dev, hostdev->managed);
if (hostdev->source.subsys.u.pci.backend
== VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO) {
if (virPCIDeviceSetStubDriver(dev, "vfio-pci") < 0)
goto cleanup;
} else if (hostdev->source.subsys.u.pci.backend
== VIR_DOMAIN_HOSTDEV_PCI_BACKEND_XEN) {
if (virPCIDeviceSetStubDriver(dev, "pciback") < 0)
goto cleanup;
} else {
if (virPCIDeviceSetStubDriver(dev, "pci-stub") < 0)
goto cleanup;
}
virPCIDeviceSetUsedBy(dev, drv_name, dom_name);
/* Setup the original states for the PCI device */
virPCIDeviceSetUnbindFromStub(dev, hostdev->origstates.states.pci.unbind_from_stub);
virPCIDeviceSetRemoveSlot(dev, hostdev->origstates.states.pci.remove_slot);
virPCIDeviceSetReprobe(dev, hostdev->origstates.states.pci.reprobe);
if (virPCIDeviceListAdd(mgr->activePCIHostdevs, dev) < 0)
goto cleanup;
dev = NULL;
}
ret = 0;
cleanup:
virPCIDeviceFree(dev);
virObjectUnlock(mgr->activePCIHostdevs);
virObjectUnlock(mgr->inactivePCIHostdevs);
return ret;
}
int
virHostdevUpdateActiveUSBDevices(virHostdevManagerPtr mgr,
virDomainHostdevDefPtr *hostdevs,
int nhostdevs,
const char *drv_name,
const char *dom_name)
{
virDomainHostdevDefPtr hostdev = NULL;
size_t i;
int ret = -1;
if (!nhostdevs)
return 0;
virObjectLock(mgr->activeUSBHostdevs);
for (i = 0; i < nhostdevs; i++) {
virUSBDevicePtr usb = NULL;
hostdev = hostdevs[i];
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
continue;
if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB)
continue;
usb = virUSBDeviceNew(hostdev->source.subsys.u.usb.bus,
hostdev->source.subsys.u.usb.device,
NULL);
if (!usb) {
VIR_WARN("Unable to reattach USB device %03d.%03d on domain %s",
hostdev->source.subsys.u.usb.bus,
hostdev->source.subsys.u.usb.device,
dom_name);
continue;
}
virUSBDeviceSetUsedBy(usb, drv_name, dom_name);
if (virUSBDeviceListAdd(mgr->activeUSBHostdevs, usb) < 0) {
virUSBDeviceFree(usb);
goto cleanup;
}
}
ret = 0;
cleanup:
virObjectUnlock(mgr->activeUSBHostdevs);
return ret;
}
int
virHostdevUpdateActiveSCSIDevices(virHostdevManagerPtr mgr,
virDomainHostdevDefPtr *hostdevs,
int nhostdevs,
const char *drv_name,
const char *dom_name)
{
virDomainHostdevDefPtr hostdev = NULL;
size_t i;
int ret = -1;
virSCSIDevicePtr scsi = NULL;
virSCSIDevicePtr tmp = NULL;
if (!nhostdevs)
return 0;
virObjectLock(mgr->activeSCSIHostdevs);
for (i = 0; i < nhostdevs; i++) {
hostdev = hostdevs[i];
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI)
continue;
if (!(scsi = virSCSIDeviceNew(NULL,
hostdev->source.subsys.u.scsi.adapter,
hostdev->source.subsys.u.scsi.bus,
hostdev->source.subsys.u.scsi.target,
hostdev->source.subsys.u.scsi.unit,
hostdev->readonly,
hostdev->shareable)))
goto cleanup;
if ((tmp = virSCSIDeviceListFind(mgr->activeSCSIHostdevs, scsi))) {
if (virSCSIDeviceSetUsedBy(tmp, drv_name, dom_name) < 0) {
virSCSIDeviceFree(scsi);
goto cleanup;
}
virSCSIDeviceFree(scsi);
} else {
if (virSCSIDeviceSetUsedBy(scsi, drv_name, dom_name) < 0 ||
virSCSIDeviceListAdd(mgr->activeSCSIHostdevs, scsi) < 0) {
virSCSIDeviceFree(scsi);
goto cleanup;
}
}
}
ret = 0;
cleanup:
virObjectUnlock(mgr->activeSCSIHostdevs);
return ret;
}
static int
virHostdevMarkUSBDevices(virHostdevManagerPtr mgr,
const char *drv_name,
const char *dom_name,
virUSBDeviceListPtr list)
{
size_t i, j;
unsigned int count;
virUSBDevicePtr tmp;
virObjectLock(mgr->activeUSBHostdevs);
count = virUSBDeviceListCount(list);
for (i = 0; i < count; i++) {
virUSBDevicePtr usb = virUSBDeviceListGet(list, i);
if ((tmp = virUSBDeviceListFind(mgr->activeUSBHostdevs, usb))) {
const char *other_drvname;
const char *other_domname;
virUSBDeviceGetUsedBy(tmp, &other_drvname, &other_domname);
if (other_drvname && other_domname)
virReportError(VIR_ERR_OPERATION_INVALID,
_("USB device %s is in use by "
"driver %s, domain %s"),
virUSBDeviceGetName(tmp),
other_drvname, other_domname);
else
virReportError(VIR_ERR_OPERATION_INVALID,
_("USB device %s is already in use"),
virUSBDeviceGetName(tmp));
goto error;
}
virUSBDeviceSetUsedBy(usb, drv_name, dom_name);
VIR_DEBUG("Adding %03d.%03d dom=%s to activeUSBHostdevs",
virUSBDeviceGetBus(usb), virUSBDeviceGetDevno(usb),
dom_name);
/*
* The caller is responsible to steal these usb devices
* from the virUSBDeviceList that passed in on success,
* perform rollback on failure.
*/
if (virUSBDeviceListAdd(mgr->activeUSBHostdevs, usb) < 0)
goto error;
}
virObjectUnlock(mgr->activeUSBHostdevs);
return 0;
error:
for (j = 0; j < i; j++) {
tmp = virUSBDeviceListGet(list, i);
virUSBDeviceListSteal(mgr->activeUSBHostdevs, tmp);
}
virObjectUnlock(mgr->activeUSBHostdevs);
return -1;
}
static int
virHostdevFindUSBDevice(virDomainHostdevDefPtr hostdev,
bool mandatory,
virUSBDevicePtr *usb)
{
unsigned vendor = hostdev->source.subsys.u.usb.vendor;
unsigned product = hostdev->source.subsys.u.usb.product;
unsigned bus = hostdev->source.subsys.u.usb.bus;
unsigned device = hostdev->source.subsys.u.usb.device;
bool autoAddress = hostdev->source.subsys.u.usb.autoAddress;
int rc;
*usb = NULL;
if (vendor && bus) {
rc = virUSBDeviceFind(vendor, product, bus, device,
NULL,
autoAddress ? false : mandatory,
usb);
if (rc < 0) {
return -1;
} else if (!autoAddress) {
goto out;
} else {
VIR_INFO("USB device %x:%x could not be found at previous"
" address (bus:%u device:%u)",
vendor, product, bus, device);
}
}
/* When vendor is specified, its USB address is either unspecified or the
* device could not be found at the USB device where it had been
* automatically found before.
*/
if (vendor) {
virUSBDeviceListPtr devs;
rc = virUSBDeviceFindByVendor(vendor, product, NULL, mandatory, &devs);
if (rc < 0)
return -1;
if (rc == 1) {
*usb = virUSBDeviceListGet(devs, 0);
virUSBDeviceListSteal(devs, *usb);
}
virObjectUnref(devs);
if (rc == 0) {
goto out;
} else if (rc > 1) {
if (autoAddress) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("Multiple USB devices for %x:%x were found,"
" but none of them is at bus:%u device:%u"),
vendor, product, bus, device);
} else {
virReportError(VIR_ERR_OPERATION_FAILED,
_("Multiple USB devices for %x:%x, "
"use <address> to specify one"),
vendor, product);
}
return -1;
}
hostdev->source.subsys.u.usb.bus = virUSBDeviceGetBus(*usb);
hostdev->source.subsys.u.usb.device = virUSBDeviceGetDevno(*usb);
hostdev->source.subsys.u.usb.autoAddress = true;
if (autoAddress) {
VIR_INFO("USB device %x:%x found at bus:%u device:%u (moved"
" from bus:%u device:%u)",
vendor, product,
hostdev->source.subsys.u.usb.bus,
hostdev->source.subsys.u.usb.device,
bus, device);
}
} else if (!vendor && bus) {
if (virUSBDeviceFindByBus(bus, device, NULL, mandatory, usb) < 0)
return -1;
}
out:
if (!*usb)
hostdev->missing = true;
return 0;
}
int
virHostdevPrepareUSBDevices(virHostdevManagerPtr hostdev_mgr,
const char *drv_name,
const char *dom_name,
virDomainHostdevDefPtr *hostdevs,
int nhostdevs,
unsigned int flags)
{
size_t i;
int ret = -1;
virUSBDeviceListPtr list;
virUSBDevicePtr tmp;
bool coldBoot = !!(flags & VIR_HOSTDEV_COLD_BOOT);
if (!nhostdevs)
return 0;
/* To prevent situation where USB device is assigned to two domains
* we need to keep a list of currently assigned USB devices.
* This is done in several loops which cannot be joined into one big
* loop. See virHostdevPreparePCIDevices()
*/
if (!(list = virUSBDeviceListNew()))
goto cleanup;
/* Loop 1: build temporary list
*/
for (i = 0; i < nhostdevs; i++) {
virDomainHostdevDefPtr hostdev = hostdevs[i];
bool required = true;
virUSBDevicePtr usb;
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
continue;
if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB)
continue;
if (hostdev->startupPolicy == VIR_DOMAIN_STARTUP_POLICY_OPTIONAL ||
(hostdev->startupPolicy == VIR_DOMAIN_STARTUP_POLICY_REQUISITE &&
!coldBoot))
required = false;
if (virHostdevFindUSBDevice(hostdev, required, &usb) < 0)
goto cleanup;
if (usb && virUSBDeviceListAdd(list, usb) < 0) {
virUSBDeviceFree(usb);
goto cleanup;
}
}
/* Mark devices in temporary list as used by @dom_name
* and add them do driver list. However, if something goes
* wrong, perform rollback.
*/
if (virHostdevMarkUSBDevices(hostdev_mgr, drv_name, dom_name, list) < 0)
goto cleanup;
/* Loop 2: Temporary list was successfully merged with
* driver list, so steal all items to avoid freeing them
* in cleanup label.
*/
while (virUSBDeviceListCount(list) > 0) {
tmp = virUSBDeviceListGet(list, 0);
virUSBDeviceListSteal(list, tmp);
}
ret = 0;
cleanup:
virObjectUnref(list);
return ret;
}
int
virHostdevPrepareSCSIDevices(virHostdevManagerPtr hostdev_mgr,
const char *drv_name,
const char *dom_name,
virDomainHostdevDefPtr *hostdevs,
int nhostdevs)
{
size_t i, j;
int count;
virSCSIDeviceListPtr list;
virSCSIDevicePtr tmp;
if (!nhostdevs)
return 0;
/* To prevent situation where SCSI device is assigned to two domains
* we need to keep a list of currently assigned SCSI devices.
* This is done in several loops which cannot be joined into one big
* loop. See virHostdevPreparePCIDevices()
*/
if (!(list = virSCSIDeviceListNew()))
goto cleanup;
/* Loop 1: build temporary list */
for (i = 0; i < nhostdevs; i++) {
virDomainHostdevDefPtr hostdev = hostdevs[i];
virSCSIDevicePtr scsi;
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI)
continue;
if (hostdev->managed) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("SCSI host device doesn't support managed mode"));
goto cleanup;
}
if (!(scsi = virSCSIDeviceNew(NULL,
hostdev->source.subsys.u.scsi.adapter,
hostdev->source.subsys.u.scsi.bus,
hostdev->source.subsys.u.scsi.target,
hostdev->source.subsys.u.scsi.unit,
hostdev->readonly,
hostdev->shareable)))
goto cleanup;
if (scsi && virSCSIDeviceListAdd(list, scsi) < 0) {
virSCSIDeviceFree(scsi);
goto cleanup;
}
}
/* Loop 2: Mark devices in temporary list as used by @name
* and add them to driver list. However, if something goes
* wrong, perform rollback.
*/
virObjectLock(hostdev_mgr->activeSCSIHostdevs);
count = virSCSIDeviceListCount(list);
for (i = 0; i < count; i++) {
virSCSIDevicePtr scsi = virSCSIDeviceListGet(list, i);
if ((tmp = virSCSIDeviceListFind(hostdev_mgr->activeSCSIHostdevs,
scsi))) {
bool scsi_shareable = virSCSIDeviceGetShareable(scsi);
bool tmp_shareable = virSCSIDeviceGetShareable(tmp);
if (!(scsi_shareable && tmp_shareable)) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("SCSI device %s is already in use by "
"other domain(s) as '%s'"),
virSCSIDeviceGetName(tmp),
tmp_shareable ? "shareable" : "non-shareable");
goto error;
}
if (virSCSIDeviceSetUsedBy(tmp, drv_name, dom_name) < 0)
goto error;
} else {
if (virSCSIDeviceSetUsedBy(scsi, drv_name, dom_name) < 0)
goto error;
VIR_DEBUG("Adding %s to activeSCSIHostdevs", virSCSIDeviceGetName(scsi));
if (virSCSIDeviceListAdd(hostdev_mgr->activeSCSIHostdevs, scsi) < 0)
goto error;
}
}
virObjectUnlock(hostdev_mgr->activeSCSIHostdevs);
/* Loop 3: Temporary list was successfully merged with
* driver list, so steal all items to avoid freeing them
* when freeing temporary list.
*/
while (virSCSIDeviceListCount(list) > 0) {
tmp = virSCSIDeviceListGet(list, 0);
virSCSIDeviceListSteal(list, tmp);
}
virObjectUnref(list);
return 0;
error:
for (j = 0; j < i; j++) {
tmp = virSCSIDeviceListGet(list, i);
virSCSIDeviceListSteal(hostdev_mgr->activeSCSIHostdevs, tmp);
}
virObjectUnlock(hostdev_mgr->activeSCSIHostdevs);
cleanup:
virObjectUnref(list);
return -1;
}
void
virHostdevReAttachUSBDevices(virHostdevManagerPtr hostdev_mgr,
const char *drv_name,
const char *dom_name,
virDomainHostdevDefPtr *hostdevs,
int nhostdevs)
{
size_t i;
if (!nhostdevs)
return;
virObjectLock(hostdev_mgr->activeUSBHostdevs);
for (i = 0; i < nhostdevs; i++) {
virDomainHostdevDefPtr hostdev = hostdevs[i];
virUSBDevicePtr usb, tmp;
const char *usedby_drvname;
const char *usedby_domname;
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
continue;
if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB)
continue;
if (hostdev->missing)
continue;
usb = virUSBDeviceNew(hostdev->source.subsys.u.usb.bus,
hostdev->source.subsys.u.usb.device,
NULL);
if (!usb) {
VIR_WARN("Unable to reattach USB device %03d.%03d on domain %s",
hostdev->source.subsys.u.usb.bus,
hostdev->source.subsys.u.usb.device,
dom_name);
continue;
}
/* Delete only those USB devices which belongs
* to domain @name because qemuProcessStart() might
* have failed because USB device is already taken.
* Therefore we want to steal only those devices from
* the list which were taken by @name */
tmp = virUSBDeviceListFind(hostdev_mgr->activeUSBHostdevs, usb);
virUSBDeviceFree(usb);
if (!tmp) {
VIR_WARN("Unable to find device %03d.%03d "
"in list of active USB devices",
hostdev->source.subsys.u.usb.bus,
hostdev->source.subsys.u.usb.device);
continue;
}
virUSBDeviceGetUsedBy(tmp, &usedby_drvname, &usedby_domname);
if (STREQ_NULLABLE(drv_name, usedby_drvname) &&
STREQ_NULLABLE(dom_name, usedby_domname)) {
VIR_DEBUG("Removing %03d.%03d dom=%s from activeUSBHostdevs",
hostdev->source.subsys.u.usb.bus,
hostdev->source.subsys.u.usb.device,
dom_name);
virUSBDeviceListDel(hostdev_mgr->activeUSBHostdevs, tmp);
}
}
virObjectUnlock(hostdev_mgr->activeUSBHostdevs);
}
void
virHostdevReAttachSCSIDevices(virHostdevManagerPtr hostdev_mgr,
const char *drv_name,
const char *dom_name,
virDomainHostdevDefPtr *hostdevs,
int nhostdevs)
{
size_t i;
if (!nhostdevs)
return;
virObjectLock(hostdev_mgr->activeSCSIHostdevs);
for (i = 0; i < nhostdevs; i++) {
virDomainHostdevDefPtr hostdev = hostdevs[i];
virSCSIDevicePtr scsi;
virSCSIDevicePtr tmp;
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI)
continue;
if (!(scsi = virSCSIDeviceNew(NULL,
hostdev->source.subsys.u.scsi.adapter,
hostdev->source.subsys.u.scsi.bus,
hostdev->source.subsys.u.scsi.target,
hostdev->source.subsys.u.scsi.unit,
hostdev->readonly,
hostdev->shareable))) {
VIR_WARN("Unable to reattach SCSI device %s:%d:%d:%d on domain %s",
hostdev->source.subsys.u.scsi.adapter,
hostdev->source.subsys.u.scsi.bus,
hostdev->source.subsys.u.scsi.target,
hostdev->source.subsys.u.scsi.unit,
dom_name);
continue;
}
/* Only delete the devices which are marked as being used by @name,
* because qemuProcessStart could fail on the half way. */
if (!(tmp = virSCSIDeviceListFind(hostdev_mgr->activeSCSIHostdevs, scsi))) {
VIR_WARN("Unable to find device %s:%d:%d:%d "
"in list of active SCSI devices",
hostdev->source.subsys.u.scsi.adapter,
hostdev->source.subsys.u.scsi.bus,
hostdev->source.subsys.u.scsi.target,
hostdev->source.subsys.u.scsi.unit);
virSCSIDeviceFree(scsi);
continue;
}
VIR_DEBUG("Removing %s:%d:%d:%d dom=%s from activeSCSIHostdevs",
hostdev->source.subsys.u.scsi.adapter,
hostdev->source.subsys.u.scsi.bus,
hostdev->source.subsys.u.scsi.target,
hostdev->source.subsys.u.scsi.unit,
dom_name);
virSCSIDeviceListDel(hostdev_mgr->activeSCSIHostdevs, tmp,
drv_name, dom_name);
virSCSIDeviceFree(scsi);
}
virObjectUnlock(hostdev_mgr->activeSCSIHostdevs);
}
int
virHostdevPCINodeDeviceDetach(virHostdevManagerPtr hostdev_mgr,
virPCIDevicePtr pci)
{
int ret = -1;
virObjectLock(hostdev_mgr->activePCIHostdevs);
virObjectLock(hostdev_mgr->inactivePCIHostdevs);
if (virPCIDeviceDetach(pci, hostdev_mgr->activePCIHostdevs,
hostdev_mgr->inactivePCIHostdevs) < 0) {
goto out;
}
ret = 0;
out:
virObjectUnlock(hostdev_mgr->inactivePCIHostdevs);
virObjectUnlock(hostdev_mgr->activePCIHostdevs);
return ret;
}
int
virHostdevPCINodeDeviceReAttach(virHostdevManagerPtr hostdev_mgr,
virPCIDevicePtr pci)
{
virPCIDevicePtr other;
int ret = -1;
virObjectLock(hostdev_mgr->activePCIHostdevs);
virObjectLock(hostdev_mgr->inactivePCIHostdevs);
other = virPCIDeviceListFind(hostdev_mgr->activePCIHostdevs, pci);
if (other) {
const char *other_drvname = NULL;
const char *other_domname = NULL;
virPCIDeviceGetUsedBy(other, &other_drvname, &other_domname);
if (other_drvname && other_domname)
virReportError(VIR_ERR_OPERATION_INVALID,
_("PCI device %s is still in use by "
"driver %s, domain %s"),
virPCIDeviceGetName(pci),
other_drvname, other_domname);
else
virReportError(VIR_ERR_OPERATION_INVALID,
_("PCI device %s is still in use"),
virPCIDeviceGetName(pci));
goto out;
}
virPCIDeviceReattachInit(pci);
if (virPCIDeviceReattach(pci, hostdev_mgr->activePCIHostdevs,
hostdev_mgr->inactivePCIHostdevs) < 0)
goto out;
ret = 0;
out:
virObjectUnlock(hostdev_mgr->inactivePCIHostdevs);
virObjectUnlock(hostdev_mgr->activePCIHostdevs);
return ret;
}
int
virHostdevPCINodeDeviceReset(virHostdevManagerPtr hostdev_mgr,
virPCIDevicePtr pci)
{
int ret = -1;
virObjectLock(hostdev_mgr->activePCIHostdevs);
virObjectLock(hostdev_mgr->inactivePCIHostdevs);
if (virPCIDeviceReset(pci, hostdev_mgr->activePCIHostdevs,
hostdev_mgr->inactivePCIHostdevs) < 0)
goto out;
ret = 0;
out:
virObjectUnlock(hostdev_mgr->inactivePCIHostdevs);
virObjectUnlock(hostdev_mgr->activePCIHostdevs);
return ret;
}
int
virHostdevPrepareDomainDevices(virHostdevManagerPtr mgr,
const char *driver,
virDomainDefPtr def,
unsigned int flags)
{
if (!def->nhostdevs)
return 0;
if (mgr == NULL)
return -1;
if (flags & VIR_HOSTDEV_SP_PCI) {
if (virHostdevPreparePCIDevices(mgr, driver,
def->name, def->uuid,
def->hostdevs,
def->nhostdevs,
flags) < 0)
return -1;
}
if (flags & VIR_HOSTDEV_SP_USB) {
if (virHostdevPrepareUSBDevices(mgr, driver, def->name,
def->hostdevs, def->nhostdevs,
flags) < 0)
return -1;
}
if (flags & VIR_HOSTDEV_SP_SCSI) {
if (virHostdevPrepareSCSIDevices(mgr, driver, def->name,
def->hostdevs, def->nhostdevs) < 0)
return -1;
}
return 0;
}
/* @oldStateDir
* For upgrade purpose: see virHostdevReAttachPCIHostdevs
*/
void
virHostdevReAttachDomainDevices(virHostdevManagerPtr mgr,
const char *driver,
virDomainDefPtr def,
unsigned int flags,
const char *oldStateDir)
{
if (!def->nhostdevs || !mgr)
return;
if (flags & VIR_HOSTDEV_SP_PCI) {
virHostdevReAttachPCIDevices(mgr, driver, def->name,
def->hostdevs, def->nhostdevs,
oldStateDir);
}
if (flags & VIR_HOSTDEV_SP_USB) {
virHostdevReAttachUSBDevices(mgr, driver, def->name,
def->hostdevs, def->nhostdevs);
}
if (flags & VIR_HOSTDEV_SP_SCSI) {
virHostdevReAttachSCSIDevices(mgr, driver, def->name,
def->hostdevs, def->nhostdevs);
}
}
int
virHostdevUpdateDomainActiveDevices(virHostdevManagerPtr mgr,
const char *driver,
virDomainDefPtr def,
unsigned int flags)
{
if (!def->nhostdevs)
return 0;
if (flags & VIR_HOSTDEV_SP_PCI) {
if (virHostdevUpdateActivePCIDevices(mgr,
def->hostdevs,
def->nhostdevs,
driver, def->name) < 0)
return -1;
}
if (flags & VIR_HOSTDEV_SP_USB) {
if (virHostdevUpdateActiveUSBDevices(mgr,
def->hostdevs,
def->nhostdevs,
driver, def->name) < 0)
return -1;
}
if (flags & VIR_HOSTDEV_SP_SCSI) {
if (virHostdevUpdateActiveSCSIDevices(mgr,
def->hostdevs,
def->nhostdevs,
driver, def->name) < 0)
return -1;
}
return 0;
}
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