8:32 a.m.
Extract code from qemu_hostdev.c and make it reusable for multiple drivers,
meanwhile maintain a global hostdev state to solve conflict between different
drivers.
Signed-off-by: Chunyan Liu <cyliu(a)suse.com>
---
po/POTFILES.in | 1 +
src/Makefile.am | 1 +
src/libvirt_private.syms | 21 +
src/util/virhostdev.c | 1775 ++++++++++++++++++++++++++++++++++++++++++++++
src/util/virhostdev.h | 134 ++++
5 files changed, 1932 insertions(+), 0 deletions(-)
create mode 100644 src/util/virhostdev.c
create mode 100644 src/util/virhostdev.h
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 0359b2f..60c226a 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -160,6 +160,7 @@ src/util/vireventpoll.c
src/util/virfile.c
src/util/virhash.c
src/util/virhook.c
+src/util/virhostdev.c
src/util/viridentity.c
src/util/virinitctl.c
src/util/viriptables.c
diff --git a/src/Makefile.am b/src/Makefile.am
index 3f8d22f..04ea01b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -104,6 +104,7 @@ UTIL_SOURCES = \
util/virhash.c util/virhash.h \
util/virhashcode.c util/virhashcode.h \
util/virhook.c util/virhook.h \
+ util/virhostdev.c util/virhostdev.h \
util/viridentity.c util/viridentity.h \
util/virinitctl.c util/virinitctl.h \
util/viriptables.c util/viriptables.h \
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 2c9536a..b283f8e 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1276,6 +1276,27 @@ virHookInitialize;
virHookPresent;
+#util/virhostdev.h
+virHostdevHostSupportsPassthroughKVM;
+virHostdevHostSupportsPassthroughVFIO;
+virHostdevManagerGetDefault;
+virHostdevPciNodeDeviceDetach;
+virHostdevPciNodeDeviceReAttach;
+virHostdevPciNodeDeviceReset;
+virHostdevPrepareDomainHostdevs;
+virHostdevPreparePciHostdevs;
+virHostdevPrepareScsiHostdevs;
+virHostdevPrepareUsbHostdevs;
+virHostdevReAttachDomainHostdevs;
+virHostdevReAttachPciHostdevs;
+virHostdevReAttachScsiHostdevs;
+virHostdevReAttachUsbHostdevs;
+virHostdevUpdateActiveHostdevs;
+virHostdevUpdateActivePciHostdevs;
+virHostdevUpdateActiveScsiHostdevs;
+virHostdevUpdateActiveUsbHostdevs;
+
+
# util/viridentity.h
virIdentityGetAttr;
virIdentityGetCurrent;
diff --git a/src/util/virhostdev.c b/src/util/virhostdev.c
new file mode 100644
index 0000000..8d75a77
--- /dev/null
+++ b/src/util/virhostdev.c
@@ -0,0 +1,1775 @@
+/* virhostdev.c: hostdev management
+ *
+ * Copyright (C) 2014 SUSE LINUX Products GmbH, Nuernberg, Germany.
+ * Copyright (C) 2006-2007, 2009-2014 Red Hat, Inc.
+ * Copyright (C) 2006 Daniel P. Berrange
+ *
+ * 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: Chunyan Liu <cyliu(a)suse.com>
+ * Author: Daniel P. Berrange <berrange(a)redhat.com>
+ */
+
+#include <config.h>
+
+#include <dirent.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 "virnetdev.h"
+#include "virutil.h"
+#include "configmake.h"
+
+#define VIR_FROM_THIS VIR_FROM_NONE
+
+#define HOSTDEV_STATE_DIR LOCALSTATEDIR "/run/libvirt/hostdevmgr"
+
+/* for upgrade, may need to find netconfig file in old qemu state dir */
+#define QEMU_STATE_DIR LOCALSTATEDIR "/run/libvirt/qemu"
+
+static virHostdevManagerPtr hostdevMgr;
+
+static void
+virHostdevManagerCleanup(void)
+{
+ if (!hostdevMgr)
+ return;
+
+ virObjectUnref(hostdevMgr->activePciHostdevs);
+ virObjectUnref(hostdevMgr->inactivePciHostdevs);
+ virObjectUnref(hostdevMgr->activeUsbHostdevs);
+ VIR_FREE(hostdevMgr->stateDir);
+
+ VIR_FREE(hostdevMgr);
+}
+
+static int
+virHostdevOnceInit(void)
+{
+ if (VIR_ALLOC(hostdevMgr) < 0)
+ goto error;
+
+ 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 (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;
+ }
+
+ return 0;
+
+error:
+ virHostdevManagerCleanup();
+ return -1;
+}
+
+VIR_ONCE_GLOBAL_INIT(virHostdev)
+
+virHostdevManagerPtr
+virHostdevManagerGetDefault(void)
+{
+ if (virHostdevInitialize() < 0)
+ return NULL;
+ return hostdevMgr;
+}
+
+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,
+ int 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,
+ char *stateDir)
+{
+ char *linkdev = NULL;
+ virNetDevVlanPtr vlan;
+ virNetDevVPortProfilePtr virtPort;
+ int ret = -1;
+ int vf = -1;
+ int vlanid = -1;
+ int port_profile_associate = 1;
+ 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, if there is an existing VM on QEMU, the hostdev netconfig file
+ * is previously stored in /var/run/libvirt/qemu. With new version, it tries to
+ * find in hostdevManager->stateDir location but certainly it cannot find it.
+ * In this case, we should find in the old state dir.
+ */
+static int
+virHostdevNetConfigRestore(virDomainHostdevDefPtr hostdev,
+ char *stateDir,
+ char *oldStateDir)
+{
+ char *linkdev = NULL;
+ virNetDevVPortProfilePtr virtPort;
+ int ret = -1;
+ int vf = -1;
+ int port_profile_associate = 0;
+ 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;
+}
+
+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);
+
+ switch (hostdev->source.subsys.u.pci.backend) {
+ case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO:
+ if (virPCIDeviceSetStubDriver(dev, "vfio-pci") < 0) {
+ virObjectUnref(list);
+ return NULL;
+ }
+ break;
+
+ case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_KVM :
+ case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT:
+ if (virPCIDeviceSetStubDriver(dev, "pci-stub") < 0) {
+ virObjectUnref(list);
+ return NULL;
+ }
+ break;
+ }
+ }
+
+ return list;
+}
+
+bool
+virHostdevHostSupportsPassthroughVFIO(void)
+{
+ DIR *iommuDir = NULL;
+ struct dirent *iommuGroup = NULL;
+ bool ret = false;
+
+ /* condition 1 - /sys/kernel/iommu_groups/ contains entries */
+ if (!(iommuDir = opendir("/sys/kernel/iommu_groups/")))
+ goto cleanup;
+
+ while ((iommuGroup = readdir(iommuDir))) {
+ /* skip ./ ../ */
+ if (STRPREFIX(iommuGroup->d_name, "."))
+ continue;
+
+ /* assume we found a group */
+ break;
+ }
+
+ if (!iommuGroup)
+ goto cleanup;
+ /* okay, iommu is on and recognizes groups */
+
+ /* condition 2 - /dev/vfio/vfio exists */
+ if (!virFileExists("/dev/vfio/vfio"))
+ goto cleanup;
+
+ ret = true;
+
+cleanup:
+ if (iommuDir)
+ closedir(iommuDir);
+
+ return ret;
+}
+
+
+#if HAVE_LINUX_KVM_H
+# include <linux/kvm.h>
+bool
+virHostdevHostSupportsPassthroughKVM(void)
+{
+ int kvmfd = -1;
+ bool ret = false;
+
+ if ((kvmfd = open("/dev/kvm", O_RDONLY)) < 0)
+ goto cleanup;
+
+# ifdef KVM_CAP_IOMMU
+ if ((ioctl(kvmfd, KVM_CHECK_EXTENSION, KVM_CAP_IOMMU)) <= 0)
+ goto cleanup;
+
+ ret = true;
+# endif
+
+cleanup:
+ VIR_FORCE_CLOSE(kvmfd);
+
+ return ret;
+}
+#else
+bool
+virHostdevHostSupportsPassthroughKVM(void)
+{
+ return false;
+}
+#endif
+
+static bool
+virHostdevPCICheckSupport(virDomainHostdevDefPtr *hostdevs,
+ size_t nhostdevs)
+{
+ bool supportsPassthroughVFIO = virHostdevHostSupportsPassthroughVFIO();
+ bool supportsPassthroughKVM = virHostdevHostSupportsPassthroughKVM();
+ size_t i;
+
+ /* assign defaults for hostdev passthrough */
+ for (i = 0; i < nhostdevs; i++) {
+ virDomainHostdevDefPtr hostdev = hostdevs[i];
+ int *backend = &hostdev->source.subsys.u.pci.backend;
+
+ if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
+ continue;
+ if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
+ continue;
+
+ switch ((virDomainHostdevSubsysPciBackendType) *backend) {
+ case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO:
+ if (!supportsPassthroughVFIO) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("host doesn't support VFIO PCI
passthrough"));
+ return false;
+ }
+ break;
+
+ case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_KVM:
+ if (!supportsPassthroughKVM) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("host doesn't support legacy PCI
passthrough"));
+ return false;
+ }
+
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ return true;
+}
+int
+virHostdevPreparePciHostdevs(virHostdevManagerPtr 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;
+ if (mgr == NULL)
+ return -1;
+
+ virObjectLock(mgr->activePciHostdevs);
+ virObjectLock(mgr->inactivePciHostdevs);
+
+ if (!virHostdevPCICheckSupport(hostdevs, nhostdevs))
+ goto cleanup;
+
+ 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 stub driver
+ */
+
+ for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
+ virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
+ virPCIDevicePtr other;
+ bool strict_acs_check = !!(flags & VIR_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(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 */
+ for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
+ virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
+ if (virPCIDeviceGetManaged(dev) &&
+ virPCIDeviceDetach(dev, 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, mgr->activePciHostdevs,
+ 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, 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(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(mgr->inactivePciHostdevs, dev);
+ }
+
+ /* Loop 7: Now set the used_by_domain of the device in
+ * driver->activePciHostdevs as domain name.
+ */
+ for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
+ virPCIDevicePtr dev, activeDev;
+
+ dev = virPCIDeviceListGet(pcidevs, i);
+ activeDev = virPCIDeviceListFind(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 driver->activePciHostdevs. We will
+ * free them in virObjectUnref().
+ */
+ while (virPCIDeviceListCount(pcidevs) > 0) {
+ virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, 0);
+ virPCIDeviceListSteal(mgr->activePciHostdevs, dev);
+ }
+
+resetvfnetconfig:
+ for (i = 0;
+ last_processed_hostdev_vf != -1 && i < last_processed_hostdev_vf;
i++)
+ virHostdevNetConfigRestore(hostdevs[i], mgr->stateDir, NULL);
+
+reattachdevs:
+ for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
+ virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
+ virPCIDeviceReattach(dev, mgr->activePciHostdevs, NULL);
+ }
+
+cleanup:
+ virObjectUnlock(mgr->activePciHostdevs);
+ virObjectUnlock(mgr->inactivePciHostdevs);
+ virObjectUnref(pcidevs);
+ return ret;
+}
+
+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;
+}
+
+static int
+virHostdevMarkUsbHostdevs(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 driver= %s dom=%s to activeUsbHostdevs",
+ virUSBDeviceGetBus(usb), virUSBDeviceGetDevno(usb),
+ drv_name, 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, j);
+ virUSBDeviceListSteal(mgr->activeUsbHostdevs, tmp);
+ }
+ virObjectUnlock(mgr->activeUsbHostdevs);
+ return -1;
+}
+
+int
+virHostdevPrepareUsbHostdevs(virHostdevManagerPtr 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_COLD_BOOT);
+
+ if (!nhostdevs)
+ return 0;
+ if (mgr == NULL)
+ return -1;
+
+ /* 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.
+ */
+ 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 @name
+ * and add them do active list. However, if something goes
+ * wrong, perform rollback.
+ */
+ if (virHostdevMarkUsbHostdevs(mgr, drv_name, dom_name, list) < 0)
+ goto cleanup;
+
+ /* Loop 2: Temporary list was successfully merged with
+ * active 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;
+}
+
+static int
+virHostdevSetUnprivSGIO(virDomainDeviceDefPtr dev)
+{
+ virDomainHostdevDefPtr hostdev = NULL;
+ char *sysfs_path = NULL;
+ char *path = NULL;
+ char *hostdev_name = NULL;
+ char *hostdev_path = NULL;
+ int val = -1;
+ int ret = 0;
+
+ if (dev->type != VIR_DOMAIN_DEVICE_HOSTDEV) {
+ hostdev = dev->data.hostdev;
+
+ if (!hostdev->shareable ||
+ !(hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
+ hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI))
+ return 0;
+
+ if (!(hostdev_name = virSCSIDeviceGetDevName(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)))
+ goto cleanup;
+
+ if (virAsprintf(&hostdev_path, "/dev/%s", hostdev_name) < 0)
+ goto cleanup;
+
+ path = hostdev_path;
+ } else {
+ return 0;
+ }
+
+ sysfs_path = virGetUnprivSGIOSysfsPath(path, NULL);
+ if (sysfs_path == NULL) {
+ ret = -1;
+ goto cleanup;
+ }
+
+ /* By default, filter the SG_IO commands, i.e. set unpriv_sgio to 0. */
+ val = (hostdev->source.subsys.u.scsi.sgio ==
+ VIR_DOMAIN_DEVICE_SGIO_UNFILTERED);
+
+ /* Do not do anything if unpriv_sgio is not supported by the kernel and the
+ * whitelist is enabled. But if requesting unfiltered access, always call
+ * virSetDeviceUnprivSGIO, to report an error for unsupported unpriv_sgio.
+ */
+ if ((virFileExists(sysfs_path) || val == 1) &&
+ virSetDeviceUnprivSGIO(path, NULL, val) < 0)
+ ret = -1;
+
+cleanup:
+ VIR_FREE(sysfs_path);
+ VIR_FREE(hostdev_name);
+ VIR_FREE(hostdev_path);
+ return ret;
+}
+
+int
+virHostdevPrepareScsiHostdevs(virHostdevManagerPtr 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;
+ if (mgr == NULL)
+ return -1;
+
+ /* Loop 1 */
+ for (i = 0; i < nhostdevs; i++) {
+ virDomainDeviceDef dev;
+
+ dev.type = VIR_DOMAIN_DEVICE_HOSTDEV;
+ dev.data.hostdev = hostdevs[i];
+
+ if (virHostdevSetUnprivSGIO(&dev) < 0)
+ return -1;
+ }
+
+ /* To prevent situation where SCSI device is assigned to two domains
+ * we need to keep a list of currently assigned SCSI devices.
+ */
+ if (!(list = virSCSIDeviceListNew()))
+ goto cleanup;
+
+ /* Loop 2: 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 3: Mark devices in temporary list as used by @drv_name & @dom_name,
+ * and add them to driver list. However, if something goes wrong, perform
+ * rollback.
+ */
+ virObjectLock(mgr->activeScsiHostdevs);
+ count = virSCSIDeviceListCount(list);
+
+ for (i = 0; i < count; i++) {
+ virSCSIDevicePtr scsi = virSCSIDeviceListGet(list, i);
+ if ((tmp = virSCSIDeviceListFind(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(mgr->activeScsiHostdevs, scsi) < 0)
+ goto error;
+
+ }
+ }
+
+ virObjectUnlock(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, j);
+ virSCSIDeviceListSteal(mgr->activeScsiHostdevs, tmp);
+ }
+ virObjectUnlock(mgr->activeScsiHostdevs);
+cleanup:
+ virObjectUnref(list);
+ return -1;
+}
+
+int
+virHostdevPrepareDomainHostdevs(virHostdevManagerPtr mgr,
+ const char *driver,
+ virDomainDefPtr def,
+ unsigned int flags)
+{
+ if (!def->nhostdevs)
+ return 0;
+
+ if (mgr == NULL)
+ return -1;
+
+ if (flags & VIR_SP_PCI_HOSTDEV) {
+ if (virHostdevPreparePciHostdevs(mgr, driver,
+ def->name, def->uuid,
+ def->hostdevs,
+ def->nhostdevs,
+ flags) < 0)
+ return -1;
+ }
+
+ if (flags & VIR_SP_USB_HOSTDEV) {
+ if (virHostdevPrepareUsbHostdevs(mgr, driver, def->name,
+ def->hostdevs, def->nhostdevs,
+ flags) < 0)
+ return -1;
+ }
+
+ if (flags & VIR_SP_SCSI_HOSTDEV) {
+ if (virHostdevPrepareScsiHostdevs(mgr, driver, def->name,
+ def->hostdevs, def->nhostdevs) < 0)
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Pre-condition: mgr->inactivePciHostdevs & mgr->activePciHostdevs
+ * are locked
+ */
+static void
+virHostdevReAttachPciDevice(virHostdevManagerPtr mgr, virPCIDevicePtr dev)
+{
+ /* 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);
+}
+
+/*
+ * Pre-condition: mgr->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];
+ virPCIDevicePtr dev;
+ virPCIDevicePtr activeDev;
+
+ 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 ((activeDev = virPCIDeviceListFind(mgr->activePciHostdevs, dev))) {
+ if (virPCIDeviceListAdd(list, activeDev) < 0) {
+ virPCIDeviceFree(dev);
+ virObjectUnref(list);
+ return NULL;
+ }
+ }
+
+ virPCIDeviceFree(dev);
+ }
+
+ return list;
+}
+
+int
+virHostdevUpdateActivePciHostdevs(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;
+
+ if (!mgr)
+ return -1;
+
+ 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);
+ switch (hostdev->source.subsys.u.pci.backend) {
+ case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO:
+ if (virPCIDeviceSetStubDriver(dev, "vfio-pci") < 0)
+ goto cleanup;
+ break;
+
+ case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_KVM :
+ case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT:
+ if (virPCIDeviceSetStubDriver(dev, "pci-stub") < 0)
+ goto cleanup;
+ break;
+ }
+ 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
+virHostdevUpdateActiveUsbHostdevs(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;
+
+ if (!mgr)
+ return -1;
+
+ 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 driver %s domain %s",
+ hostdev->source.subsys.u.usb.bus,
+ hostdev->source.subsys.u.usb.device,
+ drv_name, 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
+virHostdevUpdateActiveScsiHostdevs(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;
+
+ if (!mgr)
+ return -1;
+
+ 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;
+}
+
+int
+virHostdevUpdateActiveHostdevs(virHostdevManagerPtr mgr,
+ const char *driver,
+ virDomainDefPtr def,
+ unsigned int flags)
+{
+ if (!def->nhostdevs)
+ return 0;
+
+ if (flags & VIR_SP_PCI_HOSTDEV) {
+ if (virHostdevUpdateActivePciHostdevs(mgr,
+ def->hostdevs,
+ def->nhostdevs,
+ driver, def->name) < 0)
+ return -1;
+ }
+
+ if (flags & VIR_SP_USB_HOSTDEV) {
+ if (virHostdevUpdateActiveUsbHostdevs(mgr,
+ def->hostdevs,
+ def->nhostdevs,
+ driver, def->name) < 0)
+ return -1;
+ }
+
+ if (flags & VIR_SP_SCSI_HOSTDEV) {
+ if (virHostdevUpdateActiveScsiHostdevs(mgr,
+ def->hostdevs,
+ def->nhostdevs,
+ driver, def->name) < 0)
+ return -1;
+ }
+
+ return 0;
+}
+
+
+void
+virHostdevReAttachPciHostdevs(virHostdevManagerPtr mgr,
+ const char *drv_name,
+ const char *dom_name,
+ virDomainHostdevDefPtr *hostdevs,
+ int nhostdevs)
+{
+ virPCIDeviceListPtr pcidevs;
+ size_t i;
+ char *oldStateDir = NULL;
+
+ if (!nhostdevs || !mgr)
+ return;
+
+ virObjectLock(mgr->activePciHostdevs);
+ virObjectLock(mgr->inactivePciHostdevs);
+
+ /* for upgrade, if netconfig file is not found in mgr->stateDir,
+ * find in old state dir */
+ if (VIR_STRDUP(oldStateDir, QEMU_STATE_DIR) < 0)
+ goto cleanup;
+
+ if (!(pcidevs = virHostdevGetActivePciHostDeviceList(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;
+ const char *usedby_drvname;
+ const char *usedby_domname;
+
+ /* Never delete the dev from list driver->activePciHostdevs
+ * if it's used by other domain.
+ */
+ activeDev = virPCIDeviceListFind(mgr->activePciHostdevs, dev);
+ if (activeDev) {
+ virPCIDeviceGetUsedBy(activeDev, &usedby_drvname, &usedby_domname);
+ if (STRNEQ_NULLABLE(drv_name, usedby_drvname) ||
+ STRNEQ_NULLABLE(dom_name, usedby_domname)) {
+ virPCIDeviceListSteal(pcidevs, dev);
+ continue;
+ }
+ }
+
+ virPCIDeviceListSteal(mgr->activePciHostdevs, dev);
+ }
+
+ /*
+ * For SRIOV net host devices, unset mac and port profile before
+ * reset and reattach device
+ */
+ for (i = 0; i < nhostdevs; i++)
+ virHostdevNetConfigRestore(hostdevs[i], mgr->stateDir, oldStateDir);
+
+ for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
+ virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
+ if (virPCIDeviceReset(dev, mgr->activePciHostdevs,
+ 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(mgr, dev);
+ }
+
+ virObjectUnref(pcidevs);
+cleanup:
+ VIR_FREE(oldStateDir);
+ virObjectUnlock(mgr->activePciHostdevs);
+ virObjectUnlock(mgr->inactivePciHostdevs);
+}
+
+void
+virHostdevReAttachUsbHostdevs(virHostdevManagerPtr mgr,
+ const char *drv_name,
+ const char *dom_name,
+ virDomainHostdevDefPtr *hostdevs,
+ int nhostdevs)
+{
+ size_t i;
+
+ if (!nhostdevs || !mgr)
+ return;
+
+ virObjectLock(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 driver %s domain %s",
+ hostdev->source.subsys.u.usb.bus,
+ hostdev->source.subsys.u.usb.device,
+ drv_name, dom_name);
+ continue;
+ }
+
+ /* Delete only those USB devices which belongs
+ * to domain. Therefore we want to steal only
+ * those devices from the list which were taken
+ * by domain */
+
+ tmp = virUSBDeviceListFind(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:%s",
+ hostdev->source.subsys.u.usb.bus,
+ hostdev->source.subsys.u.usb.device,
+ drv_name, dom_name);
+ virUSBDeviceListDel(mgr->activeUsbHostdevs, tmp);
+ }
+
+ }
+
+ virObjectUnlock(mgr->activeUsbHostdevs);
+}
+
+void
+virHostdevReAttachScsiHostdevs(virHostdevManagerPtr mgr,
+ const char *drv_name,
+ const char *dom_name,
+ virDomainHostdevDefPtr *hostdevs,
+ int nhostdevs)
+{
+ size_t i;
+
+ if (!nhostdevs || !mgr)
+ return;
+
+ virObjectLock(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 driver %s,
"
+ "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,
+ drv_name, 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(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 drv= %s 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,
+ drv_name, dom_name);
+
+ virSCSIDeviceListDel(mgr->activeScsiHostdevs, tmp, drv_name, dom_name);
+ virSCSIDeviceFree(scsi);
+ }
+
+ virObjectUnlock(mgr->activeScsiHostdevs);
+}
+
+void
+virHostdevReAttachDomainHostdevs(virHostdevManagerPtr mgr,
+ const char *driver,
+ virDomainDefPtr def,
+ unsigned int flags)
+{
+ if (!def->nhostdevs || !mgr)
+ return;
+
+ if (flags & VIR_SP_PCI_HOSTDEV) {
+ virHostdevReAttachPciHostdevs(mgr, driver, def->name,
+ def->hostdevs, def->nhostdevs);
+ }
+
+ if (flags & VIR_SP_USB_HOSTDEV) {
+ virHostdevReAttachUsbHostdevs(mgr, driver, def->name,
+ def->hostdevs, def->nhostdevs);
+ }
+
+ if (flags & VIR_SP_SCSI_HOSTDEV) {
+ virHostdevReAttachScsiHostdevs(mgr, driver, def->name,
+ def->hostdevs, def->nhostdevs);
+ }
+}
+
+/* following functions are used by NodeDevDetach/Reattach/Reset */
+int
+virHostdevPciNodeDeviceDetach(virHostdevManagerPtr mgr,
+ virPCIDevicePtr pci)
+{
+ int ret;
+
+ if (!mgr || !pci)
+ return -1;
+
+ virObjectLock(mgr->activePciHostdevs);
+ virObjectLock(mgr->inactivePciHostdevs);
+ if (virPCIDeviceDetach(pci, mgr->activePciHostdevs,
+ mgr->inactivePciHostdevs) < 0)
+ ret = -1;
+ else
+ ret = 0;
+
+ virObjectUnlock(mgr->inactivePciHostdevs);
+ virObjectUnlock(mgr->activePciHostdevs);
+ return ret;
+}
+
+int
+virHostdevPciNodeDeviceReAttach(virHostdevManagerPtr mgr,
+ virPCIDevicePtr pci)
+{
+ int ret = -1;
+ virPCIDevicePtr other;
+
+ if (!mgr || !pci)
+ return -1;
+
+ virObjectLock(mgr->activePciHostdevs);
+ virObjectLock(mgr->inactivePciHostdevs);
+ other = virPCIDeviceListFind(mgr->activePciHostdevs, pci);
+ if (other) {
+ 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 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, mgr->activePciHostdevs,
+ mgr->inactivePciHostdevs) < 0)
+ goto out;
+
+ ret = 0;
+out:
+ virObjectUnlock(mgr->inactivePciHostdevs);
+ virObjectUnlock(mgr->activePciHostdevs);
+ return ret;
+}
+
+int
+virHostdevPciNodeDeviceReset(virHostdevManagerPtr mgr,
+ virPCIDevicePtr pci)
+{
+ int ret;
+
+ if (!mgr || !pci)
+ return -1;
+
+ virObjectLock(mgr->activePciHostdevs);
+ virObjectLock(mgr->inactivePciHostdevs);
+ if (virPCIDeviceReset(pci, mgr->activePciHostdevs,
+ mgr->inactivePciHostdevs) < 0)
+ ret = -1;
+ else
+ ret = 0;
+
+ virObjectUnlock(mgr->inactivePciHostdevs);
+ virObjectUnlock(mgr->activePciHostdevs);
+ return ret;
+}
diff --git a/src/util/virhostdev.h b/src/util/virhostdev.h
new file mode 100644
index 0000000..e4b5b86
--- /dev/null
+++ b/src/util/virhostdev.h
@@ -0,0 +1,134 @@
+/* virhostdev.h: hostdev management
+ *
+ * Copyright (C) 2014 SUSE LINUX Products GmbH, Nuernberg, Germany.
+ * Copyright (C) 2006-2007, 2009-2014 Red Hat, Inc.
+ * Copyright (C) 2006 Daniel P. Berrange
+ *
+ * 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: Chunyan Liu <cyliu(a)suse.com>
+ * Author: Daniel P. Berrange <berrange(a)redhat.com>
+ */
+
+#ifndef __VIR_HOSTDEV_H__
+# define __VIR_HOSTDEV_H__
+
+# include "internal.h"
+
+# include "domain_conf.h"
+# include "virpci.h"
+# include "virusb.h"
+# include "virscsi.h"
+
+typedef enum {
+ VIR_SP_PCI_HOSTDEV = (1 << 0), /* support pci passthrough */
+ VIR_SP_USB_HOSTDEV = (1 << 1), /* support usb passthrough */
+ VIR_SP_SCSI_HOSTDEV = (1 << 2), /* support scsi passthrough */
+
+ VIR_COLD_BOOT = (1 << 8), /* cold boot */
+ VIR_STRICT_ACS_CHECK = (1 << 9), /* strict acs check */
+} virHostdevManagerFlag;
+
+typedef struct _virHostdevManager virHostdevManager;
+typedef virHostdevManager *virHostdevManagerPtr;
+struct _virHostdevManager{
+ char *stateDir;
+
+ virPCIDeviceListPtr activePciHostdevs;
+ virPCIDeviceListPtr inactivePciHostdevs;
+ virUSBDeviceListPtr activeUsbHostdevs;
+ virSCSIDeviceListPtr activeScsiHostdevs;
+};
+
+virHostdevManagerPtr virHostdevManagerGetDefault(void);
+
+bool virHostdevHostSupportsPassthroughVFIO(void);
+bool virHostdevHostSupportsPassthroughKVM(void);
+
+/* functions used to prepare/unprepare hostdevs for domain */
+int virHostdevPrepareDomainHostdevs(virHostdevManagerPtr mgr,
+ const char *driver,
+ virDomainDefPtr def,
+ unsigned int flags);
+void virHostdevReAttachDomainHostdevs(virHostdevManagerPtr mgr,
+ const char *driver,
+ virDomainDefPtr def,
+ unsigned int flags);
+int virHostdevPreparePciHostdevs(virHostdevManagerPtr mgr,
+ const char *drv_name,
+ const char *dom_name,
+ const unsigned char *uuid,
+ virDomainHostdevDefPtr *hostdevs,
+ int nhostdevs,
+ unsigned int flags);
+int virHostdevPrepareUsbHostdevs(virHostdevManagerPtr mgr,
+ const char *drv_name,
+ const char *dom_name,
+ virDomainHostdevDefPtr *hostdevs,
+ int nhostdevs,
+ unsigned int flags);
+int virHostdevPrepareScsiHostdevs(virHostdevManagerPtr mgr,
+ const char *drv_name,
+ const char *dom_name,
+ virDomainHostdevDefPtr *hostdevs,
+ int nhostdevs);
+void virHostdevReAttachPciHostdevs(virHostdevManagerPtr mgr,
+ const char *drv_name,
+ const char *dom_name,
+ virDomainHostdevDefPtr *hostdevs,
+ int nhostdevs);
+void virHostdevReAttachUsbHostdevs(virHostdevManagerPtr mgr,
+ const char *drv_name,
+ const char *dom_name,
+ virDomainHostdevDefPtr *hostdevs,
+ int nhostdevs);
+void virHostdevReAttachScsiHostdevs(virHostdevManagerPtr mgr,
+ const char *drv_name,
+ const char *dom_name,
+ virDomainHostdevDefPtr *hostdevs,
+ int nhostdevs);
+int
+virHostdevUpdateActivePciHostdevs(virHostdevManagerPtr mgr,
+ virDomainHostdevDefPtr *hostdevs,
+ int nhostdevs,
+ const char *drv_name,
+ const char *dom_name);
+int
+virHostdevUpdateActiveUsbHostdevs(virHostdevManagerPtr mgr,
+ virDomainHostdevDefPtr *hostdevs,
+ int nhostdevs,
+ const char *drv_name,
+ const char *dom_name);
+int
+virHostdevUpdateActiveScsiHostdevs(virHostdevManagerPtr mgr,
+ virDomainHostdevDefPtr *hostdevs,
+ int nhostdevs,
+ const char *drv_name,
+ const char *dom_name);
+int
+virHostdevUpdateActiveHostdevs(virHostdevManagerPtr mgr,
+ const char *driver,
+ virDomainDefPtr def,
+ unsigned int flags);
+
+/* functions used by NodeDevDetach/Reattach/Reset */
+int virHostdevPciNodeDeviceDetach(virHostdevManagerPtr mgr,
+ virPCIDevicePtr pci);
+int virHostdevPciNodeDeviceReAttach(virHostdevManagerPtr mgr,
+ virPCIDevicePtr pci);
+int virHostdevPciNodeDeviceReset(virHostdevManagerPtr mgr,
+ virPCIDevicePtr pci);
+
+#endif /* __VIR_HOSTDEV_H__ */
--
1.6.0.2