[libvirt] [PATCH v13 17/49] move virHostdevPrepare(ReAttach)PCIDevices to virhostdev.c

Signed-off-by: Chunyan Liu <cyliu(a)suse.com&gt; --- src/libvirt_private.syms | 3 +- src/qemu/qemu_hostdev.c | 648 --------------------------------------------- src/qemu/qemu_hostdev.h | 5 - src/qemu/qemu_process.c | 1 + src/util/virhostdev.c | 649 ++++++++++++++++++++++++++++++++++++++++++++++ src/util/virhostdev.h | 25 ++ 6 files changed, 677 insertions(+), 654 deletions(-) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index bc048a1..410133a 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -1293,7 +1293,8 @@ virHookPresent; #util/virhostdev.h virHostdevManagerGetDefault; - +virHostdevPreparePCIDevices; +virHostdevReAttachPCIDevices; # util/viridentity.h virIdentityGetAttr; diff --git a/src/qemu/qemu_hostdev.c b/src/qemu/qemu_hostdev.c index 8f009e1..b0489e2 100644 --- a/src/qemu/qemu_hostdev.c +++ b/src/qemu/qemu_hostdev.c @@ -41,102 +41,6 @@ #define VIR_FROM_THIS VIR_FROM_QEMU -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 (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; -} - - int qemuUpdateActivePciHostdevs(virQEMUDriverPtr driver ATTRIBUTE_UNUSED, virDomainDefPtr def) @@ -304,232 +208,6 @@ cleanup: } -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, - 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, - char *stateDir, - 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; -} - - bool qemuHostdevHostSupportsPassthroughVFIO(void) { @@ -662,205 +340,6 @@ qemuPrepareHostdevPCICheckSupport(virDomainHostdevDefPtr *hostdevs, return true; } -static int -virHostdevPreparePCIDevices(virHostdevManagerPtr hostdev_mgr, - const char *drv_name, - const char *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; - - 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_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, 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; - -} - int qemuPrepareHostdevPCIDevices(virQEMUDriverPtr driver ATTRIBUTE_UNUSED, const char *name, @@ -1264,133 +743,6 @@ qemuPrepareHostDevices(virQEMUDriverPtr driver, return 0; } - -/* - * 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 - */ -static void -virHostdevReAttachPCIDevices(virHostdevManagerPtr hostdev_mgr, - const char *drv_name, - const char *name, - virDomainHostdevDefPtr *hostdevs, - int nhostdevs, - char *oldStateDir) -{ - virPCIDeviceListPtr pcidevs; - size_t i; - - 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(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); - qemuReattachPciDevice(dev, hostdev_mgr); - } - - virObjectUnref(pcidevs); -cleanup: - virObjectUnlock(hostdev_mgr->activePciHostdevs); - virObjectUnlock(hostdev_mgr->inactivePciHostdevs); - -} - void qemuDomainReAttachHostdevDevices(virQEMUDriverPtr driver, const char *name, diff --git a/src/qemu/qemu_hostdev.h b/src/qemu/qemu_hostdev.h index c137302..0957a39 100644 --- a/src/qemu/qemu_hostdev.h +++ b/src/qemu/qemu_hostdev.h @@ -27,11 +27,6 @@ # include "qemu_conf.h" # include "domain_conf.h" -typedef enum { - VIR_STRICT_ACS_CHECK = (1 << 0), /* strict acs check */ - VIR_COLD_BOOT = (1 << 1), /* cold boot */ -} virHostdevFlag; - int qemuUpdateActivePciHostdevs(virQEMUDriverPtr driver, virDomainDefPtr def); int qemuUpdateActiveUsbHostdevs(virQEMUDriverPtr driver, diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 3fbe4d1..29c6944 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -66,6 +66,7 @@ #include "viratomic.h" #include "virnuma.h" #include "virstring.h" +#include "virhostdev.h" #define VIR_FROM_THIS VIR_FROM_QEMU diff --git a/src/util/virhostdev.c b/src/util/virhostdev.c index 83124e9..9d48ac9 100644 --- a/src/util/virhostdev.c +++ b/src/util/virhostdev.c @@ -1,5 +1,7 @@ /* 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 @@ -16,6 +18,7 @@ * License along with this library. If not, see * <http://www.gnu.org/licenses/>;. * + * Author: Daniel P. Berrange <berrange(a)redhat.com&gt; * Author: Chunyan Liu <cyliu(a)suse.com&gt; */ @@ -36,6 +39,7 @@ #include "virerror.h" #include "virlog.h" #include "virutil.h" +#include "virnetdev.h" #include "configmake.h" #define VIR_FROM_THIS VIR_FROM_NONE @@ -101,3 +105,648 @@ virHostdevManagerGetDefault(void) return NULL; return hostdevMgr; } + +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 (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, + 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, + char *stateDir, + 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 *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; + + 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_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, 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 *name, + virDomainHostdevDefPtr *hostdevs, + int nhostdevs, + char *oldStateDir) +{ + virPCIDeviceListPtr pcidevs; + size_t i; + + 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(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); + +} diff --git a/src/util/virhostdev.h b/src/util/virhostdev.h index dba5e3e..d3ac1d3 100644 --- a/src/util/virhostdev.h +++ b/src/util/virhostdev.h @@ -1,5 +1,7 @@ /* virhostdev.h: 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 @@ -16,6 +18,7 @@ * License along with this library. If not, see * <http://www.gnu.org/licenses/>;. * + * Author: Daniel P. Berrange <berrange(a)redhat.com&gt; * Author: Chunyan Liu <cyliu(a)suse.com&gt; */ @@ -27,6 +30,13 @@ # include "virpci.h" # include "virusb.h" # include "virscsi.h" +# include "domain_conf.h" + +typedef enum { + VIR_STRICT_ACS_CHECK = (1 << 0), /* strict acs check */ + VIR_COLD_BOOT = (1 << 1), /* cold boot */ +} virHostdevFlag; + typedef struct _virHostdevManager virHostdevManager; typedef virHostdevManager *virHostdevManagerPtr; @@ -40,5 +50,20 @@ struct _virHostdevManager{ }; virHostdevManagerPtr virHostdevManagerGetDefault(void); +int +virHostdevPreparePCIDevices(virHostdevManagerPtr hostdev_mgr, + const char *drv_name, + const char *name, + const unsigned char *uuid, + virDomainHostdevDefPtr *hostdevs, + int nhostdevs, + unsigned int flags); +void +virHostdevReAttachPCIDevices(virHostdevManagerPtr hostdev_mgr, + const char *drv_name, + const char *name, + virDomainHostdevDefPtr *hostdevs, + int nhostdevs, + char *oldStateDir); #endif /* __VIR_HOSTDEV_H__ */ -- 1.6.0.2