> --- a/src/util/virpci.c > > +++ b/src/util/virpci.c > > @@ -59,7 +59,10 @@ struct _virPCIDevice { > > char name[PCI_ADDR_LEN]; /* domain:bus:slot.function */ > > char id[PCI_ID_LEN]; /* product vendor */ > > char *path; > > - const char *used_by; /* The domain which uses the device */ > > + > > + /* The driver:domain which uses the device */ > > + char *used_by_drvname; > > + char *used_by_domname; Why changing from const char* to char*?

> diff --git a/src/util/virpci.c b/src/util/virpci.c > index 00d1064..4ea2bcf 100644 > --- a/src/util/virpci.c > +++ b/src/util/virpci.c > @@ -59,7 +59,10 @@ struct _virPCIDevice { > char name[PCI_ADDR_LEN]; /* domain:bus:slot.function */ > char id[PCI_ID_LEN]; /* product vendor */ > char *path; > - const char *used_by; /* The domain which uses the device */ > + > + /* The driver:domain which uses the device */ > + char *used_by_drvname; > + char *used_by_domname; Why changing from const char* to char*?

For extracting hostdev codes from qemu_hostdev.c to common library, change qemu specific cfg->relaxedACS handling to be a flag, and pass it to hostdev functions. Signed-off-by: Chunyan Liu <cyliu(a)suse.com&gt; --- src/qemu/qemu_hostdev.c | 11 +++++++---- src/qemu/qemu_hostdev.h | 10 ++++++++-- src/qemu/qemu_hotplug.c | 7 ++++++- src/qemu/qemu_process.c | 5 ++++- 4 files changed, 25 insertions(+), 8 deletions(-) diff --git a/src/qemu/qemu_hostdev.c b/src/qemu/qemu_hostdev.c index 01c24f9..0d313c0 100644 --- a/src/qemu/qemu_hostdev.c +++ b/src/qemu/qemu_hostdev.c @@ -650,7 +650,8 @@ qemuPrepareHostdevPCIDevices(virQEMUDriverPtr driver, const unsigned char *uuid, virDomainHostdevDefPtr *hostdevs, int nhostdevs, - virQEMUCapsPtr qemuCaps) + virQEMUCapsPtr qemuCaps, + unsigned int flags) { virPCIDeviceListPtr pcidevs = NULL; int last_processed_hostdev_vf = -1; @@ -682,8 +683,9 @@ qemuPrepareHostdevPCIDevices(virQEMUDriverPtr 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, !cfg->relaxedACS)) { + if (!virPCIDeviceIsAssignable(dev, strict_acs_check)) { virReportError(VIR_ERR_OPERATION_INVALID, _("PCI device %s is not assignable"), virPCIDeviceGetName(dev)); @@ -1187,14 +1189,15 @@ int qemuPrepareHostDevices(virQEMUDriverPtr driver, virDomainDefPtr def, virQEMUCapsPtr qemuCaps, - bool coldBoot) + bool coldBoot, + unsigned int flags) { if (!def->nhostdevs) return 0; if (qemuPrepareHostdevPCIDevices(driver, def->name, def->uuid, def->hostdevs, def->nhostdevs, - qemuCaps) < 0) + qemuCaps, flags) < 0) return -1; if (qemuPrepareHostUSBDevices(driver, def, coldBoot) < 0) diff --git a/src/qemu/qemu_hostdev.h b/src/qemu/qemu_hostdev.h index ffb3167..ab7fb9f 100644 --- a/src/qemu/qemu_hostdev.h +++ b/src/qemu/qemu_hostdev.h @@ -27,6 +27,10 @@ # include "qemu_conf.h" # include "domain_conf.h" +typedef enum { + VIR_STRICT_ACS_CHECK = (1 << 0), /* strict acs check */ +} qemuHostdevFlag; + int qemuUpdateActivePciHostdevs(virQEMUDriverPtr driver, virDomainDefPtr def); int qemuUpdateActiveUsbHostdevs(virQEMUDriverPtr driver, @@ -40,7 +44,8 @@ int qemuPrepareHostdevPCIDevices(virQEMUDriverPtr driver, const unsigned char *uuid, virDomainHostdevDefPtr *hostdevs, int nhostdevs, - virQEMUCapsPtr qemuCaps); + virQEMUCapsPtr qemuCaps, + unsigned int flags); int qemuFindHostdevUSBDevice(virDomainHostdevDefPtr hostdev, bool mandatory, virUSBDevicePtr *usb); @@ -54,7 +59,8 @@ int qemuPrepareHostdevSCSIDevices(virQEMUDriverPtr driver, int qemuPrepareHostDevices(virQEMUDriverPtr driver, virDomainDefPtr def, virQEMUCapsPtr qemuCaps, - bool coldBoot); + bool coldBoot, + unsigned int flags); void qemuDomainReAttachHostScsiDevices(virQEMUDriverPtr driver, const char *name, virDomainHostdevDefPtr *hostdevs, diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 7066be6..c47c5e8 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -1154,12 +1154,16 @@ qemuDomainAttachHostPciDevice(virQEMUDriverPtr driver, bool teardownlabel = false; int backend; unsigned long long memKB; + virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver); + unsigned int flags = 0; if (VIR_REALLOC_N(vm->def->hostdevs, vm->def->nhostdevs + 1) < 0) return -1; + if (!cfg->relaxedACS) + flags |= VIR_STRICT_ACS_CHECK; if (qemuPrepareHostdevPCIDevices(driver, vm->def->name, vm->def->uuid, - &hostdev, 1, priv->qemuCaps) < 0) + &hostdev, 1, priv->qemuCaps, flags) < 0) return -1; /* this could have been changed by qemuPrepareHostdevPCIDevices */ @@ -1254,6 +1258,7 @@ qemuDomainAttachHostPciDevice(virQEMUDriverPtr driver, VIR_FREE(devstr); VIR_FREE(configfd_name); VIR_FORCE_CLOSE(configfd); + virObjectUnref(cfg); return 0; diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 33d2a77..c0f0719 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -3596,6 +3596,7 @@ int qemuProcessStart(virConnectPtr conn, unsigned int stop_flags; virQEMUDriverConfigPtr cfg; virCapsPtr caps = NULL; + unsigned int hostdev_flags = 0; VIR_DEBUG("vm=%p name=%s id=%d pid=%llu", vm, vm->def->name, vm->def->id, @@ -3685,8 +3686,10 @@ int qemuProcessStart(virConnectPtr conn, /* Must be run before security labelling */ VIR_DEBUG("Preparing host devices"); + if (!cfg->relaxedACS) + hostdev_flags |= VIR_STRICT_ACS_CHECK; if (qemuPrepareHostDevices(driver, vm->def, priv->qemuCaps, - !migrateFrom) < 0) + !migrateFrom, hostdev_flags) < 0) goto cleanup; VIR_DEBUG("Preparing chr devices");

For extracting hostdev codes from qemu_hostdev.c to common library, change qemu specific COLD_BOOT handling to be a flag, and pass it to hostdev functions. Signed-off-by: Chunyan Liu <cyliu(a)suse.com&gt; --- src/qemu/qemu_hostdev.c | 6 +++--- src/qemu/qemu_hostdev.h | 2 +- src/qemu/qemu_process.c | 4 +++- 3 files changed, 7 insertions(+), 5 deletions(-) diff --git a/src/qemu/qemu_hostdev.c b/src/qemu/qemu_hostdev.c index 0d313c0..ce5012d 100644 --- a/src/qemu/qemu_hostdev.c +++ b/src/qemu/qemu_hostdev.c @@ -992,7 +992,7 @@ out: static int qemuPrepareHostUSBDevices(virQEMUDriverPtr driver, virDomainDefPtr def, - bool coldBoot) + unsigned int flags) { size_t i; int ret = -1; @@ -1000,6 +1000,7 @@ qemuPrepareHostUSBDevices(virQEMUDriverPtr driver, virUSBDevicePtr tmp; virDomainHostdevDefPtr *hostdevs = def->hostdevs; int nhostdevs = def->nhostdevs; + bool coldBoot = !!(flags & VIR_COLD_BOOT); /* To prevent situation where USB device is assigned to two domains * we need to keep a list of currently assigned USB devices. @@ -1189,7 +1190,6 @@ int qemuPrepareHostDevices(virQEMUDriverPtr driver, virDomainDefPtr def, virQEMUCapsPtr qemuCaps, - bool coldBoot, unsigned int flags) { if (!def->nhostdevs) @@ -1200,7 +1200,7 @@ qemuPrepareHostDevices(virQEMUDriverPtr driver, qemuCaps, flags) < 0) return -1; - if (qemuPrepareHostUSBDevices(driver, def, coldBoot) < 0) + if (qemuPrepareHostUSBDevices(driver, def, flags) < 0) return -1; if (qemuPrepareHostdevSCSIDevices(driver, def->name, diff --git a/src/qemu/qemu_hostdev.h b/src/qemu/qemu_hostdev.h index ab7fb9f..710867d 100644 --- a/src/qemu/qemu_hostdev.h +++ b/src/qemu/qemu_hostdev.h @@ -29,6 +29,7 @@ typedef enum { VIR_STRICT_ACS_CHECK = (1 << 0), /* strict acs check */ + VIR_COLD_BOOT = (1 << 1), /* cold boot */

} qemuHostdevFlag; int qemuUpdateActivePciHostdevs(virQEMUDriverPtr driver, @@ -59,7 +60,6 @@ int qemuPrepareHostdevSCSIDevices(virQEMUDriverPtr driver, int qemuPrepareHostDevices(virQEMUDriverPtr driver, virDomainDefPtr def, virQEMUCapsPtr qemuCaps, - bool coldBoot, unsigned int flags); void qemuDomainReAttachHostScsiDevices(virQEMUDriverPtr driver, const char *name, diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index c0f0719..f1fe35e 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -3688,8 +3688,10 @@ int qemuProcessStart(virConnectPtr conn, VIR_DEBUG("Preparing host devices"); if (!cfg->relaxedACS) hostdev_flags |= VIR_STRICT_ACS_CHECK; + if (!migrateFrom) + hostdev_flags |= VIR_COLD_BOOT; if (qemuPrepareHostDevices(driver, vm->def, priv->qemuCaps, - !migrateFrom, hostdev_flags) < 0) + hostdev_flags) < 0) goto cleanup; VIR_DEBUG("Preparing chr devices");

For extracting hostdev codes from qemu_hostdev.c to common library, change original paring VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT in hostdev function to qemuDomainDeviceDefPostParse.

Signed-off-by: Chunyan Liu <cyliu(a)suse.com&gt; --- src/qemu/qemu_domain.c | 22 +++++++++++++++ src/qemu/qemu_hostdev.c | 28 +++----------------- src/qemu/qemu_hostdev.h | 2 - src/qemu/qemu_hotplug.c | 2 +- src/qemu/qemu_process.c | 3 +- .../qemuxml2argv-hostdev-pci-address.xml | 1 + .../qemuxml2argvdata/qemuxml2argv-net-hostdev.xml | 1 + tests/qemuxml2argvdata/qemuxml2argv-pci-rom.xml | 2 + 8 files changed, 32 insertions(+), 29 deletions(-) diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index a665061..55e707e 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -38,6 +38,7 @@ #include "virtime.h" #include "virstoragefile.h" #include "virstring.h" +#include "qemu_hostdev.h" #include <sys/time.h> #include <fcntl.h> @@ -821,6 +822,7 @@ qemuDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, int ret = -1; virQEMUDriverPtr driver = opaque; virQEMUDriverConfigPtr cfg = NULL; + virQEMUCapsPtr qemuCaps = NULL; if (dev->type == VIR_DOMAIN_DEVICE_NET && dev->data.net->type != VIR_DOMAIN_NET_TYPE_HOSTDEV && @@ -899,6 +901,26 @@ qemuDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, dev->data.chr->source.data.nix.listen = true; } + if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV) { + virDomainHostdevDefPtr hostdev = dev->data.hostdev; + if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS && + hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI && + hostdev->source.subsys.u.pci.backend == VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT) { + + hostdev->source.subsys.u.pci.backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_KVM; + if (driver && driver->qemuCapsCache) { + bool supportsPassthroughVFIO = qemuHostdevHostSupportsPassthroughVFIO(); + qemuCaps = virQEMUCapsCacheLookupCopy(driver->qemuCapsCache, + def->emulator); + if (supportsPassthroughVFIO && qemuCaps && + virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VFIO_PCI)) + hostdev->source.subsys.u.pci.backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO; + + virObjectUnref(qemuCaps); + } + } + } + ret = 0;

cleanup: diff --git a/src/qemu/qemu_hostdev.c b/src/qemu/qemu_hostdev.c index ce5012d..80552cd 100644 --- a/src/qemu/qemu_hostdev.c +++ b/src/qemu/qemu_hostdev.c @@ -583,8 +583,7 @@ qemuHostdevHostSupportsPassthroughLegacy(void) static bool qemuPrepareHostdevPCICheckSupport(virDomainHostdevDefPtr *hostdevs, - size_t nhostdevs, - virQEMUCapsPtr qemuCaps) + size_t nhostdevs) { bool supportsPassthroughKVM = qemuHostdevHostSupportsPassthroughLegacy(); bool supportsPassthroughVFIO = qemuHostdevHostSupportsPassthroughVFIO(); @@ -601,23 +600,6 @@ qemuPrepareHostdevPCICheckSupport(virDomainHostdevDefPtr *hostdevs, continue; switch ((virDomainHostdevSubsysPciBackendType) *backend) { - case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT: - if (supportsPassthroughVFIO && - virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VFIO_PCI)) { - *backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO; - } else if (supportsPassthroughKVM && - (virQEMUCapsGet(qemuCaps, QEMU_CAPS_PCIDEVICE) || - virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE))) { - *backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_KVM; - } else { - virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", - _("host doesn't support passthrough of " - "host PCI devices")); - return false; - } - - break; - case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO: if (!supportsPassthroughVFIO) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", @@ -635,7 +617,7 @@ qemuPrepareHostdevPCICheckSupport(virDomainHostdevDefPtr *hostdevs, break; - case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_TYPE_LAST: + default: break; } } @@ -650,7 +632,6 @@ qemuPrepareHostdevPCIDevices(virQEMUDriverPtr driver, const unsigned char *uuid, virDomainHostdevDefPtr *hostdevs, int nhostdevs, - virQEMUCapsPtr qemuCaps, unsigned int flags) { virPCIDeviceListPtr pcidevs = NULL; @@ -659,7 +640,7 @@ qemuPrepareHostdevPCIDevices(virQEMUDriverPtr driver, int ret = -1; virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver); - if (!qemuPrepareHostdevPCICheckSupport(hostdevs, nhostdevs, qemuCaps)) + if (!qemuPrepareHostdevPCICheckSupport(hostdevs, nhostdevs)) goto cleanup; virObjectLock(driver->activePciHostdevs); @@ -1189,7 +1170,6 @@ cleanup: int qemuPrepareHostDevices(virQEMUDriverPtr driver, virDomainDefPtr def, - virQEMUCapsPtr qemuCaps, unsigned int flags) { if (!def->nhostdevs) @@ -1197,7 +1177,7 @@ qemuPrepareHostDevices(virQEMUDriverPtr driver, if (qemuPrepareHostdevPCIDevices(driver, def->name, def->uuid, def->hostdevs, def->nhostdevs, - qemuCaps, flags) < 0) + flags) < 0) return -1; if (qemuPrepareHostUSBDevices(driver, def, flags) < 0) diff --git a/src/qemu/qemu_hostdev.h b/src/qemu/qemu_hostdev.h index 710867d..128032d 100644 --- a/src/qemu/qemu_hostdev.h +++ b/src/qemu/qemu_hostdev.h @@ -45,7 +45,6 @@ int qemuPrepareHostdevPCIDevices(virQEMUDriverPtr driver, const unsigned char *uuid, virDomainHostdevDefPtr *hostdevs, int nhostdevs, - virQEMUCapsPtr qemuCaps, unsigned int flags); int qemuFindHostdevUSBDevice(virDomainHostdevDefPtr hostdev, bool mandatory, @@ -59,7 +58,6 @@ int qemuPrepareHostdevSCSIDevices(virQEMUDriverPtr driver, int nhostdevs); int qemuPrepareHostDevices(virQEMUDriverPtr driver, virDomainDefPtr def, - virQEMUCapsPtr qemuCaps, unsigned int flags); void qemuDomainReAttachHostScsiDevices(virQEMUDriverPtr driver, const char *name, diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index c47c5e8..8486f25 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -1163,7 +1163,7 @@ qemuDomainAttachHostPciDevice(virQEMUDriverPtr driver, if (!cfg->relaxedACS) flags |= VIR_STRICT_ACS_CHECK; if (qemuPrepareHostdevPCIDevices(driver, vm->def->name, vm->def->uuid, - &hostdev, 1, priv->qemuCaps, flags) < 0) + &hostdev, 1, flags) < 0) return -1; /* this could have been changed by qemuPrepareHostdevPCIDevices */ diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index f1fe35e..e938649 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -3690,8 +3690,7 @@ int qemuProcessStart(virConnectPtr conn, hostdev_flags |= VIR_STRICT_ACS_CHECK; if (!migrateFrom) hostdev_flags |= VIR_COLD_BOOT; - if (qemuPrepareHostDevices(driver, vm->def, priv->qemuCaps, - hostdev_flags) < 0) + if (qemuPrepareHostDevices(driver, vm->def, hostdev_flags) < 0) goto cleanup; VIR_DEBUG("Preparing chr devices"); diff --git a/tests/qemuxml2argvdata/qemuxml2argv-hostdev-pci-address.xml b/tests/qemuxml2argvdata/qemuxml2argv-hostdev-pci-address.xml index 422127c..b9a221a 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-hostdev-pci-address.xml +++ b/tests/qemuxml2argvdata/qemuxml2argv-hostdev-pci-address.xml @@ -24,6 +24,7 @@ <controller type='ide' index='0'/> <controller type='pci' index='0' model='pci-root'/> <hostdev mode='subsystem' type='pci' managed='yes'> + <driver name='kvm'/> <source> <address domain='0x0000' bus='0x06' slot='0x12' function='0x5'/> </source> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-net-hostdev.xml b/tests/qemuxml2argvdata/qemuxml2argv-net-hostdev.xml index d65ef87..9e79348 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-net-hostdev.xml +++ b/tests/qemuxml2argvdata/qemuxml2argv-net-hostdev.xml @@ -24,6 +24,7 @@ <controller type='pci' index='0' model='pci-root'/> <interface type='hostdev' managed='yes'> <mac address='00:11:22:33:44:55'/> + <driver name='kvm'/> <source> <address type='pci' domain='0x0002' bus='0x03' slot='0x07' function='0x1'/> </source> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-pci-rom.xml b/tests/qemuxml2argvdata/qemuxml2argv-pci-rom.xml index a5e59b2..924842b 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-pci-rom.xml +++ b/tests/qemuxml2argvdata/qemuxml2argv-pci-rom.xml @@ -33,12 +33,14 @@ <rom file='/etc/fake/bootrom.bin'/> </interface> <hostdev mode='subsystem' type='pci' managed='yes'> + <driver name='kvm'/> <source> <address domain='0x0000' bus='0x06' slot='0x12' function='0x5'/> </source> <rom bar='off'/> </hostdev> <hostdev mode='subsystem' type='pci' managed='yes'> + <driver name='kvm'/> <source> <address domain='0x0000' bus='0x06' slot='0x12' function='0x6'/> </source>

On 02/17/2014 11:38 AM, Cedric Bosdonnat wrote: > On Mon, 2014-02-17 at 14:32 +0800, Chunyan Liu wrote: >> For extracting hostdev codes from qemu_hostdev.c to common library, change >> original paring VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT in hostdev function to >> qemuDomainDeviceDefPostParse. > typo: paring -> parsing. > >> Signed-off-by: Chunyan Liu <cyliu(a)suse.com&gt; >> --- >> src/qemu/qemu_domain.c | 22 +++++++++++++++ >> src/qemu/qemu_hostdev.c | 28 +++----------------- >> src/qemu/qemu_hostdev.h | 2 - >> src/qemu/qemu_hotplug.c | 2 +- >> src/qemu/qemu_process.c | 3 +- >> .../qemuxml2argv-hostdev-pci-address.xml | 1 + >> .../qemuxml2argvdata/qemuxml2argv-net-hostdev.xml | 1 + >> tests/qemuxml2argvdata/qemuxml2argv-pci-rom.xml | 2 + >> 8 files changed, 32 insertions(+), 29 deletions(-) >> >> diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c >> index a665061..55e707e 100644 >> --- a/src/qemu/qemu_domain.c >> +++ b/src/qemu/qemu_domain.c >> @@ -38,6 +38,7 @@ >> #include "virtime.h" >> #include "virstoragefile.h" >> #include "virstring.h" >> +#include "qemu_hostdev.h" >> >> #include <sys/time.h> >> #include <fcntl.h> >> @@ -821,6 +822,7 @@ qemuDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, >> int ret = -1; >> virQEMUDriverPtr driver = opaque; >> virQEMUDriverConfigPtr cfg = NULL; >> + virQEMUCapsPtr qemuCaps = NULL; >> >> if (dev->type == VIR_DOMAIN_DEVICE_NET && >> dev->data.net->type != VIR_DOMAIN_NET_TYPE_HOSTDEV && >> @@ -899,6 +901,26 @@ qemuDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, >> dev->data.chr->source.data.nix.listen = true; >> } >> >> + if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV) { >> + virDomainHostdevDefPtr hostdev = dev->data.hostdev; >> + if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS && >> + hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI && >> + hostdev->source.subsys.u.pci.backend == VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT) { >> + >> + hostdev->source.subsys.u.pci.backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_KVM; >> + if (driver && driver->qemuCapsCache) { >> + bool supportsPassthroughVFIO = qemuHostdevHostSupportsPassthroughVFIO(); >> + qemuCaps = virQEMUCapsCacheLookupCopy(driver->qemuCapsCache, >> + def->emulator); >> + if (supportsPassthroughVFIO && qemuCaps && >> + virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VFIO_PCI)) >> + hostdev->source.subsys.u.pci.backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO; >> + >> + virObjectUnref(qemuCaps); >> + } >> + } >> + } >> + >> ret = 0; > KVM passthrough support isn't checked here but was checked in the > removed code, is that intended? The fact that the code doing the KVM check is fairly new, suggests to me that this omission *wasn't* intentional. I'm really glad that you're looking at that in detail, because it's the potential omission of recent bugfixes that has me nervous. Beyond that, this isn't the proper place to be moving this to - anything that is done by the PostParse callback function ends up being written to persistent config and is there effectively forever, but the interpretation of the hostdev driver "default" backend is something that must be re-done exactly at the moment the device it going to be attached. This patch instead causes that decision to be made when the domain is defined, and forever encoded in the config. I think that instead you need to either call it from qemuPrepareHostDevices() and qemuDomainAttachHostPciDevice(), OR send a callback function pointer into your new virHostdevPreparePciHostdevs(), with that function returning the "backend to use this time" based on the config setting and current system state.

>> cleanup: >> diff --git a/src/qemu/qemu_hostdev.c b/src/qemu/qemu_hostdev.c >> index ce5012d..80552cd 100644 >> --- a/src/qemu/qemu_hostdev.c >> +++ b/src/qemu/qemu_hostdev.c >> @@ -583,8 +583,7 @@ qemuHostdevHostSupportsPassthroughLegacy(void) >> >> static bool >> qemuPrepareHostdevPCICheckSupport(virDomainHostdevDefPtr *hostdevs, >> - size_t nhostdevs, >> - virQEMUCapsPtr qemuCaps) >> + size_t nhostdevs) >> { >> bool supportsPassthroughKVM = qemuHostdevHostSupportsPassthroughLegacy(); >> bool supportsPassthroughVFIO = qemuHostdevHostSupportsPassthroughVFIO(); >> @@ -601,23 +600,6 @@ qemuPrepareHostdevPCICheckSupport(virDomainHostdevDefPtr *hostdevs, >> continue; >> >> switch ((virDomainHostdevSubsysPciBackendType) *backend) { >> - case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT: >> - if (supportsPassthroughVFIO && >> - virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_VFIO_PCI)) { >> - *backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO; >> - } else if (supportsPassthroughKVM && >> - (virQEMUCapsGet(qemuCaps, QEMU_CAPS_PCIDEVICE) || >> - virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE))) { >> - *backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_KVM; >> - } else { >> - virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", >> - _("host doesn't support passthrough of " >> - "host PCI devices")); >> - return false; >> - } >> - >> - break; >> - >> case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO: >> if (!supportsPassthroughVFIO) { >> virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", >> @@ -635,7 +617,7 @@ qemuPrepareHostdevPCICheckSupport(virDomainHostdevDefPtr *hostdevs, >> >> break; >> >> - case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_TYPE_LAST: >> + default: I'm pretty sure that Peter intentionally *didn't* put a default case into this switch (and many others) specifically so that somebody adding a new enum value would get compiler errors telling them all the places they needed to handle the new case, i.e. please do not replace "case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_TYPE_LAST" with "default". >> break; >> } >> } >> @@ -650,7 +632,6 @@ qemuPrepareHostdevPCIDevices(virQEMUDriverPtr driver, >> const unsigned char *uuid, >> virDomainHostdevDefPtr *hostdevs, >> int nhostdevs, >> - virQEMUCapsPtr qemuCaps, >> unsigned int flags) >> { >> virPCIDeviceListPtr pcidevs = NULL; >> @@ -659,7 +640,7 @@ qemuPrepareHostdevPCIDevices(virQEMUDriverPtr driver, >> int ret = -1; >> virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver); >> >> - if (!qemuPrepareHostdevPCICheckSupport(hostdevs, nhostdevs, qemuCaps)) >> + if (!qemuPrepareHostdevPCICheckSupport(hostdevs, nhostdevs)) >> goto cleanup; >> >> virObjectLock(driver->activePciHostdevs); >> @@ -1189,7 +1170,6 @@ cleanup: >> int >> qemuPrepareHostDevices(virQEMUDriverPtr driver, >> virDomainDefPtr def, >> - virQEMUCapsPtr qemuCaps, >> unsigned int flags) >> { >> if (!def->nhostdevs) >> @@ -1197,7 +1177,7 @@ qemuPrepareHostDevices(virQEMUDriverPtr driver, >> >> if (qemuPrepareHostdevPCIDevices(driver, def->name, def->uuid, >> def->hostdevs, def->nhostdevs, >> - qemuCaps, flags) < 0) >> + flags) < 0) >> return -1; >> >> if (qemuPrepareHostUSBDevices(driver, def, flags) < 0) >> diff --git a/src/qemu/qemu_hostdev.h b/src/qemu/qemu_hostdev.h >> index 710867d..128032d 100644 >> --- a/src/qemu/qemu_hostdev.h >> +++ b/src/qemu/qemu_hostdev.h >> @@ -45,7 +45,6 @@ int qemuPrepareHostdevPCIDevices(virQEMUDriverPtr driver, >> const unsigned char *uuid, >> virDomainHostdevDefPtr *hostdevs, >> int nhostdevs, >> - virQEMUCapsPtr qemuCaps, >> unsigned int flags); >> int qemuFindHostdevUSBDevice(virDomainHostdevDefPtr hostdev, >> bool mandatory, >> @@ -59,7 +58,6 @@ int qemuPrepareHostdevSCSIDevices(virQEMUDriverPtr driver, >> int nhostdevs); >> int qemuPrepareHostDevices(virQEMUDriverPtr driver, >> virDomainDefPtr def, >> - virQEMUCapsPtr qemuCaps, >> unsigned int flags); >> void qemuDomainReAttachHostScsiDevices(virQEMUDriverPtr driver, >> const char *name, >> diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c >> index c47c5e8..8486f25 100644 >> --- a/src/qemu/qemu_hotplug.c >> +++ b/src/qemu/qemu_hotplug.c >> @@ -1163,7 +1163,7 @@ qemuDomainAttachHostPciDevice(virQEMUDriverPtr driver, >> if (!cfg->relaxedACS) >> flags |= VIR_STRICT_ACS_CHECK; >> if (qemuPrepareHostdevPCIDevices(driver, vm->def->name, vm->def->uuid, >> - &hostdev, 1, priv->qemuCaps, flags) < 0) >> + &hostdev, 1, flags) < 0) >> return -1; >> >> /* this could have been changed by qemuPrepareHostdevPCIDevices */ >> diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c >> index f1fe35e..e938649 100644 >> --- a/src/qemu/qemu_process.c >> +++ b/src/qemu/qemu_process.c >> @@ -3690,8 +3690,7 @@ int qemuProcessStart(virConnectPtr conn, >> hostdev_flags |= VIR_STRICT_ACS_CHECK; >> if (!migrateFrom) >> hostdev_flags |= VIR_COLD_BOOT; >> - if (qemuPrepareHostDevices(driver, vm->def, priv->qemuCaps, >> - hostdev_flags) < 0) >> + if (qemuPrepareHostDevices(driver, vm->def, hostdev_flags) < 0) >> goto cleanup; >> >> VIR_DEBUG("Preparing chr devices"); >> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-hostdev-pci-address.xml b/tests/qemuxml2argvdata/qemuxml2argv-hostdev-pci-address.xml >> index 422127c..b9a221a 100644 >> --- a/tests/qemuxml2argvdata/qemuxml2argv-hostdev-pci-address.xml >> +++ b/tests/qemuxml2argvdata/qemuxml2argv-hostdev-pci-address.xml >> @@ -24,6 +24,7 @@ >> <controller type='ide' index='0'/> >> <controller type='pci' index='0' model='pci-root'/> >> <hostdev mode='subsystem' type='pci' managed='yes'> >> + <driver name='kvm'/> >> <source> >> <address domain='0x0000' bus='0x06' slot='0x12' function='0x5'/> >> </source> >> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-net-hostdev.xml b/tests/qemuxml2argvdata/qemuxml2argv-net-hostdev.xml >> index d65ef87..9e79348 100644 >> --- a/tests/qemuxml2argvdata/qemuxml2argv-net-hostdev.xml >> +++ b/tests/qemuxml2argvdata/qemuxml2argv-net-hostdev.xml >> @@ -24,6 +24,7 @@ >> <controller type='pci' index='0' model='pci-root'/> >> <interface type='hostdev' managed='yes'> >> <mac address='00:11:22:33:44:55'/> >> + <driver name='kvm'/> >> <source> >> <address type='pci' domain='0x0002' bus='0x03' slot='0x07' function='0x1'/> >> </source> >> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-pci-rom.xml b/tests/qemuxml2argvdata/qemuxml2argv-pci-rom.xml >> index a5e59b2..924842b 100644 >> --- a/tests/qemuxml2argvdata/qemuxml2argv-pci-rom.xml >> +++ b/tests/qemuxml2argvdata/qemuxml2argv-pci-rom.xml >> @@ -33,12 +33,14 @@ >> <rom file='/etc/fake/bootrom.bin'/> >> </interface> >> <hostdev mode='subsystem' type='pci' managed='yes'> >> + <driver name='kvm'/> >> <source> >> <address domain='0x0000' bus='0x06' slot='0x12' function='0x5'/> >> </source> >> <rom bar='off'/> >> </hostdev> >> <hostdev mode='subsystem' type='pci' managed='yes'> >> + <driver name='kvm'/> >> <source> >> <address domain='0x0000' bus='0x06' slot='0x12' function='0x6'/> >> </source> > Can't those hostdev definitions keep the default backend like before? A changes in the test case is sometimes correct, but should be considered a red flag. My first guest would be that it was necessary due to the code that was added to the PostParse function (i.e. it's indicating a problem)

For extracting hostdev codes from qemu_hostdev.c to common library, move add/remove a shareable csi hostdev to/from shared device table outside hostdev functions.

Signed-off-by: Chunyan Liu <cyliu(a)suse.com&gt; --- src/qemu/qemu_hostdev.c | 9 --------- src/qemu/qemu_hotplug.c | 14 ++++++++++++++ src/qemu/qemu_process.c | 28 ++++++++++++++++++++++++++++ 3 files changed, 42 insertions(+), 9 deletions(-) diff --git a/src/qemu/qemu_hostdev.c b/src/qemu/qemu_hostdev.c index 80552cd..cfdfb03 100644 --- a/src/qemu/qemu_hostdev.c +++ b/src/qemu/qemu_hostdev.c @@ -1061,9 +1061,6 @@ qemuPrepareHostdevSCSIDevices(virQEMUDriverPtr driver, dev.type = VIR_DOMAIN_DEVICE_HOSTDEV; dev.data.hostdev = hostdevs[i]; - if (qemuAddSharedDevice(driver, &dev, name) < 0) - return -1; - if (qemuSetUnprivSGIO(&dev) < 0) return -1; } @@ -1389,12 +1386,6 @@ qemuDomainReAttachHostScsiDevices(virQEMUDriverPtr driver, virDomainHostdevDefPtr hostdev = hostdevs[i]; virSCSIDevicePtr scsi; virSCSIDevicePtr tmp; - virDomainDeviceDef dev; - - dev.type = VIR_DOMAIN_DEVICE_HOSTDEV; - dev.data.hostdev = hostdev; - - ignore_value(qemuRemoveSharedDevice(driver, &dev, name)); if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS || hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI) diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 8486f25..afa92da 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -1548,6 +1548,7 @@ qemuDomainAttachHostScsiDevice(virQEMUDriverPtr driver, char *drvstr = NULL; bool teardowncgroup = false; bool teardownlabel = false; + virDomainDeviceDef dev; if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DRIVE) || !virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE) || @@ -1561,6 +1562,12 @@ qemuDomainAttachHostScsiDevice(virQEMUDriverPtr driver, if (!cont) return -1; + /* check sharable scsi device */ + dev.type = VIR_DOMAIN_DEVICE_HOSTDEV; + dev.data.hostdev = hostdev; + if (qemuAddSharedDevice(driver, &dev, vm->def->name) < 0) + return -1; + if (qemuPrepareHostdevSCSIDevices(driver, vm->def->name, &hostdev, 1)) { virReportError(VIR_ERR_INTERNAL_ERROR, @@ -1619,6 +1626,7 @@ qemuDomainAttachHostScsiDevice(virQEMUDriverPtr driver, ret = 0; cleanup: if (ret < 0) { + ignore_value(qemuRemoveSharedDevice(driver, &dev, vm->def->name)); qemuDomainReAttachHostScsiDevices(driver, vm->def->name, &hostdev, 1); if (teardowncgroup && qemuTeardownHostdevCgroup(vm, hostdev) < 0) VIR_WARN("Unable to remove host device cgroup ACL on hotplug fail"); @@ -2587,6 +2595,12 @@ qemuDomainRemoveSCSIHostDevice(virQEMUDriverPtr driver, virDomainObjPtr vm, virDomainHostdevDefPtr hostdev) { + virDomainDeviceDef dev; + + dev.type = VIR_DOMAIN_DEVICE_HOSTDEV; + dev.data.hostdev = hostdev; + + ignore_value(qemuRemoveSharedDevice(driver, &dev, vm->def->name)); qemuDomainReAttachHostScsiDevices(driver, vm->def->name, &hostdev, 1); } diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index e938649..5ea42c7 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -3158,6 +3158,16 @@ qemuProcessReconnect(void *opaque) priv->agentError = true; } + /* update hostdevs */ + for (i = 0; i < obj->def->nhostdevs; i++) { + virDomainDeviceDef dev; + dev.type = VIR_DOMAIN_DEVICE_HOSTDEV; + dev.data.hostdev = obj->def->hostdevs[i]; + /* handle sharable scsi hostdev */ + if (qemuAddSharedDevice(driver, &dev, obj->def->name) < 0) + goto error; + } + if (qemuUpdateActivePciHostdevs(driver, obj->def) < 0) { goto error; } @@ -3686,6 +3696,15 @@ int qemuProcessStart(virConnectPtr conn, /* Must be run before security labelling */ VIR_DEBUG("Preparing host devices"); + for (i = 0; i < vm->def->nhostdevs; i++) { + virDomainDeviceDef dev; + dev.type = VIR_DOMAIN_DEVICE_HOSTDEV; + dev.data.hostdev = vm->def->hostdevs[i]; + /* handle sharable scsi hostdev */ + if (qemuAddSharedDevice(driver, &dev, vm->def->name) < 0) + goto cleanup; + } + if (!cfg->relaxedACS) hostdev_flags |= VIR_STRICT_ACS_CHECK; if (!migrateFrom) @@ -4372,6 +4391,15 @@ void qemuProcessStop(virQEMUDriverPtr driver, priv->ccwaddrs = NULL; } + /* handle shared scsi hostdev */ + for (i = 0; i < vm->def->nhostdevs; i++) { + virDomainDeviceDef dev; + + dev.type = VIR_DOMAIN_DEVICE_HOSTDEV; + dev.data.hostdev = vm->def->hostdevs[i]; + ignore_value(qemuRemoveSharedDevice(driver, &dev, vm->def->name)); + } + qemuDomainReAttachHostDevices(driver, vm->def); def = vm->def;

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&gt; --- 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&gt; + * Author: Daniel P. Berrange <berrange(a)redhat.com&gt; + */ + +#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&gt; + * Author: Daniel P. Berrange <berrange(a)redhat.com&gt; + */ + +#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__ */