12:19 a.m.
2013/8/12 Jim Fehlig <jfehlig(a)suse.com>
> +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;
> +
> + /* 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 1: build temporary list */
> + for (i = 0; i < nhostdevs; i++) {
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> + virSCSIDevicePtr scsi;
> +
> + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
> + hostdev->source.subsys.type !=
VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI)
> + continue;
> +
> + if (hostdev->managed) {
> + virReportError(VIR_ERR_XML_ERROR, "%s",
> + _("SCSI host device doesn't support managed
mode"));
> + goto cleanup;
> + }
> +
> + if (!(scsi =
virSCSIDeviceNew(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)))
> + goto cleanup;
> +
> + if (scsi && virSCSIDeviceListAdd(list, scsi) < 0) {
> + virSCSIDeviceFree(scsi);
> + goto cleanup;
> + }
> + }
> +
> + /* Loop 2: Mark devices in temporary list as used by
> + * 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))) {
> + char *other_drvname = NULL;
> + char *other_domname = NULL;
> + virSCSIDeviceGetUsedBy(tmp, &other_drvname, &other_domname);
> +
> + if (other_drvname && other_domname)
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("SCSI device %s is in use by driver %s
domain %s"),
> + virSCSIDeviceGetName(tmp),
other_drvname, other_domname);
> + else
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("SCSI device %s is already in use"),
> + virSCSIDeviceGetName(tmp));
> + goto error;
> + }
> +
> + virSCSIDeviceSetUsedBy(scsi, drv_name, dom_name);
> + 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, i);
>
Shouldn't this be 'virSCSIDeviceListGet(list, j)'?
Oh, shamed. Yes, should be 'virSCSIDeviceListGet(list, j)'. I copied it
from qemu_hostdev.c, wrong in qemu_hostdev.c too.
+ virSCSIDeviceListSteal(mgr->activeScsiHostdevs, tmp);
> + }
> + virObjectUnlock(mgr->activeScsiHostdevs);
> +cleanup:
> + virObjectUnref(list);
> + return -1;
> +}
> +
> +
> +int
> +virHostdevPrepareDomainHostdevs(virHostdevManagerPtr mgr,
> + const char *driver,
> + virDomainDefPtr def,
> + unsigned int flags)
>
Parameter whitespace alignment.
> +{
> + if (!def->nhostdevs)
> + return 0;
> +
> + 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) {
> + bool coldBoot = (flags & VIR_COLD_BOOT)?true:false;
> + if (virHostdevPrepareUsbHostdevs(mgr, driver, def->name,
> + def->hostdevs, def->nhostdevs,
> + coldBoot) < 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, const char *driver)
>
This line is > 80 columns.
> +{
> + /* 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(driver, QEMU_DRIVER_NAME) &&
> + 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;
> +}
> +
> +void
> +virHostdevReAttachPciHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs)
> +{
> + virPCIDeviceListPtr pcidevs;
> + size_t i;
> +
> + virObjectLock(mgr->activePciHostdevs);
> + virObjectLock(mgr->inactivePciHostdevs);
> +
> + 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;
> + char *usedby_drvname = NULL;
> + char *usedby_domname = NULL;
> +
> + /* Never delete the dev from list driver->activePciHostdevs
> + * if it's used by other domain.
> + */
> + activeDev = virPCIDeviceListFind(mgr->activePciHostdevs, dev);
> + if (activeDev) {
> + if (virPCIDeviceGetUsedBy(activeDev, &usedby_drvname,
&usedby_domname) < 0) {
> + VIR_WARN("Unable to get driver and domain name "
> + "using PCI device %s",
> + virPCIDeviceGetName(dev));
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + continue;
> + }
> +
> + if (STRNEQ_NULLABLE(drv_name, usedby_drvname) ||
> + STRNEQ_NULLABLE(dom_name, usedby_domname)) {
> + virPCIDeviceListSteal(pcidevs, dev);
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + continue;
> + }
> + }
> +
> + /* virObjectUnref() will take care of freeing the dev. */
> + virPCIDeviceListSteal(mgr->activePciHostdevs, dev);
> +
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + }
> +
> + /*
> + * For SRIOV net host devices, unset mac and port profile before
> + * reset and reattach device
> + */
> + 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) {
> + virHostdevNetConfigRestore(hostdev, mgr->stateDir);
> + }
> + }
> +
> + 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, drv_name);
> + }
> +
> + virObjectUnref(pcidevs);
> +cleanup:
> + 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;
> +
> + virObjectLock(mgr->activeUsbHostdevs);
> + for (i = 0; i < nhostdevs; i++) {
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> + virUSBDevicePtr usb, tmp;
> + char *usedby_drvname = NULL;
> + char *usedby_domname = NULL;
> +
> + 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;
> + }
> +
> + if (virUSBDeviceGetUsedBy(tmp, &usedby_drvname,
&usedby_domname) < 0) {
> + VIR_WARN("Unable to get driver and domain name "
> + "using USB device %03d.%03d",
> + hostdev->source.subsys.u.usb.bus,
> + hostdev->source.subsys.u.usb.device);
> +
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + continue;
> + }
> +
> + 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);
> + }
> +
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> +
> + }
> +
> + virObjectUnlock(mgr->activeUsbHostdevs);
> +}
> +
> +void
> +virHostdevReAttachScsiHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs)
> +{
> + size_t i;
> +
> + virObjectLock(mgr->activeScsiHostdevs);
> + for (i = 0; i < nhostdevs; i++) {
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> + virSCSIDevicePtr scsi, tmp;
> + char *usedby_drvname = NULL;
> + char *usedby_domname = NULL;
> +
> + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
> + hostdev->source.subsys.type !=
VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI)
> + continue;
> +
> + if (!(scsi =
virSCSIDeviceNew(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))) {
> + 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;
> + }
> +
> + tmp = virSCSIDeviceListFind(mgr->activeScsiHostdevs, scsi);
> + virSCSIDeviceFree(scsi);
> +
> + if (!tmp) {
> + 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);
> + continue;
> + }
> +
> + if (virSCSIDeviceGetUsedBy(tmp, &usedby_drvname,
&usedby_domname) < 0) {
> + VIR_WARN("Unable to get driver and domain name "
> + "using SCSI device %s:%d:%d:%d ",
> + hostdev->source.subsys.u.scsi.adapter,
> + hostdev->source.subsys.u.scsi.bus,
> + hostdev->source.subsys.u.scsi.target,
> + hostdev->source.subsys.u.scsi.unit);
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + continue;
> + }
> +
> + if (STREQ_NULLABLE(usedby_drvname, drv_name) &&
> + STREQ_NULLABLE(usedby_domname, dom_name)) {
> + VIR_DEBUG("Removing %s:%d:%d:%d driver:%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);
> + }
> +
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + }
> +
> + virObjectUnlock(mgr->activeScsiHostdevs);
> +}
> +
> +void
> +virHostdevReAttachDomainHostdevs(virHostdevManagerPtr mgr,
> + const char *driver,
> + virDomainDefPtr def,
> + unsigned int flags)
>
Parameter whitespace alignment.
> +{
> + if (!def->nhostdevs)
> + 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;
>
Needs a line after local variable declaration.
> + 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;
> +
> + virObjectLock(mgr->activePciHostdevs);
> + virObjectLock(mgr->inactivePciHostdevs);
> + other = virPCIDeviceListFind(mgr->activePciHostdevs, pci);
> + if (other) {
> + char *other_drvname = NULL;
> + char *other_domname = NULL;
> + virPCIDeviceGetUsedBy(other, &other_drvname, &other_domname);
> +
> + if (other_drvname && other_domname)
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("PCI device %s is still in use by driver
%s, domain %s"),
> + virPCIDeviceGetName(pci), other_drvname,
other_domname);
> + else
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("PCI device %s is still in use"),
> + virPCIDeviceGetName(pci));
> + goto out;
> + }
> +
> + virPCIDeviceReattachInit(pci);
> +
> + if (virPCIDeviceReattach(pci, 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;
>
Needs line after local variable declaration.
> + 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;
> +}
> +
> +/* this function is used to free memory after using following
> + * get_active/inactive_list functions
> + */
> +void
> +virHostdevNameListFree(virHostdevNameListPtr list)
> +{
> + size_t i;
> +
> + if (list && list->names) {
> + for (i = 0; i < list->nnames; i++) {
> + VIR_FREE(list->names[i]);
> + }
> + VIR_FREE(list->names);
> + }
> + VIR_FREE(list);
> +}
> +
> +virHostdevNameListPtr
> +virHostdevGetActivePciHostdevs(virHostdevManagerPtr mgr)
> +{
> + size_t i;
> + int count;
> + virHostdevNameListPtr list = NULL;
> + virObjectLock(mgr->activePciHostdevs);
> +
> + count = virPCIDeviceListCount(mgr->activePciHostdevs);
> + if (count > 0) {
> + if (VIR_ALLOC_N(list, 1) < 0) {
> + virReportOOMError();
>
No need to explicitly report OOM error now.
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC_N(list->names,count) < 0) {
> + virReportOOMError();
>
Same here.
> + goto cleanup;
> + }
> + list->nnames = 0;
> +
> + for (i = 0; i < count; i++) {
> + virPCIDevicePtr dev =
virPCIDeviceListGet(mgr->activePciHostdevs, i);
> + if (VIR_STRDUP(list->names[list->nnames++],
virPCIDeviceGetName(dev)) < 0)
> + goto cleanup;
> + }
> + }
> +
> + goto end;
> +
> +cleanup:
> + virHostdevNameListFree(list);
> +
> +end:
> + virObjectUnlock(mgr->activePciHostdevs);
> + return list;
> +}
> +
> +virHostdevNameListPtr
> +virHostdevGetActiveUsbHostdevs(virHostdevManagerPtr mgr)
> +{
> + size_t i;
> + int count;
> + virHostdevNameListPtr list = NULL;
> + virObjectLock(mgr->activeUsbHostdevs);
> +
> + count = virUSBDeviceListCount(mgr->activeUsbHostdevs);
> + if (count > 0) {
> + if (VIR_ALLOC_N(list, 1) < 0) {
> + virReportOOMError();
>
Same, no need for OOM error reporting.
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC_N(list->names,count) < 0) {
> + virReportOOMError();
>
And again.
> + goto cleanup;
> + }
> + list->nnames = 0;
> +
> + for (i = 0; i < count; i++) {
> + virUSBDevicePtr usb =
virUSBDeviceListGet(mgr->activeUsbHostdevs, i);
> + if (VIR_STRDUP(list->names[list->nnames++],
virUSBDeviceGetName(usb)) < 0)
> + goto cleanup;
> + }
> + }
> +
> + goto end;
> +
> +cleanup:
> + virHostdevNameListFree(list);
> +end:
> + virObjectUnlock(mgr->activeUsbHostdevs);
> + return list;
> +}
> +
> +virHostdevNameListPtr
> +virHostdevGetActiveScsiHostdevs(virHostdevManagerPtr mgr)
> +{
> + size_t i;
> + int count;
> + virHostdevNameListPtr list = NULL;
> + virObjectLock(mgr->activeScsiHostdevs);
> +
> + count = virSCSIDeviceListCount(mgr->activeScsiHostdevs);
> + if (count > 0) {
> + if (VIR_ALLOC_N(list, 1) < 0) {
> + virReportOOMError();
>
And again.
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC_N(list->names,count) < 0) {
> + virReportOOMError();
>
Here too.
> + goto cleanup;
> + }
> + list->nnames = 0;
> +
> + for (i = 0; i < count; i++) {
> + virSCSIDevicePtr dev =
virSCSIDeviceListGet(mgr->activeScsiHostdevs, i);
> + if (VIR_STRDUP(list->names[list->nnames++],
virSCSIDeviceGetName(dev)) < 0)
> + goto cleanup;
> + }
> + }
> +
> + goto end;
> +
> +cleanup:
> + virHostdevNameListFree(list);
> +end:
> + virObjectUnlock(mgr->activeScsiHostdevs);
> + return list;
> +}
> +
> +virHostdevNameListPtr
> +virHostdevGetDomainActivePciHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name)
> +{
> + size_t i, count;
> + virHostdevNameListPtr list = NULL;
> + virObjectLock(mgr->activePciHostdevs);
> +
> + count = virPCIDeviceListCount(mgr->activePciHostdevs);
> + if (count > 0) {
> + if (VIR_ALLOC_N(list, 1) < 0) {
> + virReportOOMError();
>
Same.
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC_N(list->names,count) < 0) {
> + virReportOOMError();
>
Same.
> + goto cleanup;
> + }
> + list->nnames = 0;
> +
> + for (i = 0; i < count; i++) {
> + virPCIDevicePtr dev =
virPCIDeviceListGet(mgr->activePciHostdevs, i);
> + char *usedby_drvname = NULL;
> + char *usedby_domname = NULL;
> + int ret;
> +
> + if (virPCIDeviceGetUsedBy(dev, &usedby_drvname,
&usedby_domname) < 0) {
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> +
> + goto cleanup;
> + }
> +
> + if (STREQ(drv_name, usedby_drvname) &&
> + STREQ(dom_name, usedby_domname)) {
> + ret = VIR_STRDUP(list->names[list->nnames++],
virPCIDeviceGetName(dev));
> + if (ret < 0) {
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + goto cleanup;
> + }
> + }
> +
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + }
> +
> + VIR_SHRINK_N(list->names, count, count - list->nnames);
> + }
> +
> + goto end;
> +
> +cleanup:
> + virHostdevNameListFree(list);
> +end:
> + virObjectUnlock(mgr->activePciHostdevs);
> + return list;
> +}
> +
> +virHostdevNameListPtr
> +virHostdevGetDomainActiveUsbHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name)
> +{
> + size_t i, count;
> + virHostdevNameListPtr list = NULL;
> + virObjectLock(mgr->activeUsbHostdevs);
> +
> + count = virUSBDeviceListCount(mgr->activeUsbHostdevs);
> + if (count > 0) {
> + if (VIR_ALLOC_N(list, 1) < 0) {
> + virReportOOMError();
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC_N(list->names,count) < 0) {
> + virReportOOMError();
>
A few more cases of unneeded OOM error reporting.
> + goto cleanup;
> + }
> + list->nnames = 0;
> +
> + for (i = 0; i < count; i++) {
> + virUSBDevicePtr usb =
virUSBDeviceListGet(mgr->activeUsbHostdevs, i);
> + char *usedby_drvname = NULL;
> + char *usedby_domname = NULL;
> + int ret;
> +
> + if (virUSBDeviceGetUsedBy(usb, &usedby_drvname,
&usedby_domname) < 0) {
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + goto cleanup;
> + }
> +
> + if (STREQ(drv_name, usedby_drvname) &&
> + STREQ(dom_name, usedby_domname)) {
> + ret = VIR_STRDUP(list->names[list->nnames++],
virUSBDeviceGetName(usb));
> + if (ret < 0) {
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + goto cleanup;
> + }
> + }
> +
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + }
> +
> + VIR_SHRINK_N(list->names, count, count - list->nnames);
> + }
> +
> + goto end;
> +
> +cleanup:
> + virHostdevNameListFree(list);
> +end:
> + virObjectUnlock(mgr->activeUsbHostdevs);
> + return list;
> +}
> +
> +virHostdevNameListPtr
> +virHostdevGetDomainActiveScsiHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name)
> +{
> + size_t i, count;
> + virHostdevNameListPtr list = NULL;
> + virObjectLock(mgr->activeScsiHostdevs);
> +
> + count = virSCSIDeviceListCount(mgr->activeScsiHostdevs);
> + if (count > 0) {
> + if (VIR_ALLOC_N(list, 1) < 0) {
> + virReportOOMError();
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC_N(list->names,count) < 0) {
> + virReportOOMError();
>
You're probably getting tired of this comment by now :).
> + goto cleanup;
> + }
> + list->nnames = 0;
> +
> + for (i = 0; i < count; i++) {
> + virSCSIDevicePtr dev =
virSCSIDeviceListGet(mgr->activeScsiHostdevs, i);
> + char *usedby_drvname = NULL;
> + char *usedby_domname = NULL;
> + int ret;
> +
> + if (virSCSIDeviceGetUsedBy(dev, &usedby_drvname,
&usedby_domname) < 0) {
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + goto cleanup;
> + }
> +
> + if (STREQ(drv_name, usedby_drvname) &&
> + STREQ(dom_name, usedby_domname)) {
> + ret = VIR_STRDUP(list->names[list->nnames++],
virSCSIDeviceGetName(dev));
> + if (ret < 0){
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + goto cleanup;
> + }
> + }
> +
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + }
> +
> + VIR_SHRINK_N(list->names, count, count - list->nnames);
> + }
> +
> + goto end;
> +
> +cleanup:
> + virHostdevNameListFree(list);
> +end:
> + virObjectUnlock(mgr->activeScsiHostdevs);
> + return list;
> +}
> diff --git a/src/util/virhostdev.h b/src/util/virhostdev.h
> new file mode 100644
> index 0000000..09377db
> --- /dev/null
> +++ b/src/util/virhostdev.h
> @@ -0,0 +1,123 @@
> +/* virhostdev.h: hostdev management
> + *
> + * Copyright (C) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
> + * Copyright (C) 2006-2007, 2009-2013 Red Hat, Inc.
> + * Copyright (C) 2006 Daniel P. Berrange
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * This library is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * Lesser General Public License for more details.
> + *
> + * You should have received a copy of the GNU Lesser General Public
> + * License along with this library. If not, see
> + * <http://www.gnu.org/licenses/>;.
> + *
> + * Author: Chunyan Liu <cyliu(a)suse.com>
> + * Author: Daniel P. Berrange <berrange(a)redhat.com>
> + */
> +
> +#ifndef __VIR_HOSTDEV_MANAGER_H__
> +# define __VIR_HOSTDEV_MANAGER_H__
> +
> +# include "internal.h"
> +# include "configmake.h"
> +
> +# include "domain_conf.h"
> +# include "virpci.h"
> +
> +# define HOSTDEV_STATE_DIR LOCALSTATEDIR "/run/libvirt/hostdevmanager"
>
This could be moved to virhostdev.c right?
Yeah, could be.
> +
> +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 virHostdevNameList {
> + char **names;
> + size_t nnames;
> +};
> +typedef struct virHostdevNameList *virHostdevNameListPtr;
> +
> +virHostdevManagerPtr virHostdevManagerGetDefault(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);
>
Parameter whitespace alignment in these two function declarations.
> +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,
> + bool coldBoot);
> +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);
> +
> +/* functions used by NodeDevDetach/Reattach/Reset */
> +int virHostdevPciNodeDeviceDetach(virHostdevManagerPtr mgr,
> + virPCIDevicePtr pci);
> +int virHostdevPciNodeDeviceReAttach(virHostdevManagerPtr mgr,
> + virPCIDevicePtr pci);
> +int virHostdevPciNodeDeviceReset(virHostdevManagerPtr mgr,
> + virPCIDevicePtr pci);
> +
> +/* functions to get active/inactive lists */
> +virHostdevNameListPtr
virHostdevGetActivePciHostdevs(virHostdevManagerPtr mgr);
> +virHostdevNameListPtr
virHostdevGetActiveUsbHostdevs(virHostdevManagerPtr mgr);
> +virHostdevNameListPtr
virHostdevGetActiveScsiHostdevs(virHostdevManagerPtr mgr);
> +virHostdevNameListPtr
virHostdevGetDomainActivePciHostdevs(virHostdevManagerPtr mgr,
> + const char
*drv_name,
> + const char
*dom_name);
> +virHostdevNameListPtr
virHostdevGetDomainActiveUsbHostdevs(virHostdevManagerPtr mgr,
> + const char
*drv_name,
> + const char
*dom_name);
> +virHostdevNameListPtr
virHostdevGetDomainActiveScsiHostdevs(virHostdevManagerPtr mgr,
> + const char
*drv_name,
> + const char
*dom_name);
> +/* function to free memory after get active/inactive lists */
> +void virHostdevNameListFree(virHostdevNameListPtr list);
> +
> +#endif /* __VIR_HOSTDEV_MANAGER_H__ */
> diff --git a/src/util/virpci.c b/src/util/virpci.c
> index be50b4f..dc38efe 100644
> --- a/src/util/virpci.c
> +++ b/src/util/virpci.c
> @@ -62,7 +62,10 @@ 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 */
> + const char *used_by_drvname;
> + const char *used_by_domname;
>
> unsigned int pcie_cap_pos;
> unsigned int pci_pm_cap_pos;
> @@ -1642,15 +1645,21 @@ virPCIDeviceSetReprobe(virPCIDevicePtr dev, bool
reprobe)
> }
>
> void
> -virPCIDeviceSetUsedBy(virPCIDevicePtr dev, const char *name)
> +virPCIDeviceSetUsedBy(virPCIDevicePtr dev, const char *drv_name, const
char *dom_name)
> {
> - dev->used_by = name;
> + dev->used_by_drvname = drv_name;
> + dev->used_by_domname = dom_name;
> }
>
> -const char *
> -virPCIDeviceGetUsedBy(virPCIDevicePtr dev)
> +int
> +virPCIDeviceGetUsedBy(virPCIDevicePtr dev, char **drv_name, char
**dom_name)
> {
> - return dev->used_by;
> + if (VIR_STRDUP(*drv_name, dev->used_by_drvname) < 0)
> + return -1;
> + if (VIR_STRDUP(*dom_name, dev->used_by_domname) < 0)
> + return -1;
> +
> + return 0;
> }
>
> void virPCIDeviceReattachInit(virPCIDevicePtr pci)
> diff --git a/src/util/virpci.h b/src/util/virpci.h
> index 0aa6fee..dc1a80b 100644
> --- a/src/util/virpci.h
> +++ b/src/util/virpci.h
> @@ -66,8 +66,11 @@ int virPCIDeviceSetStubDriver(virPCIDevicePtr dev,
> const char *driver);
> const char *virPCIDeviceGetStubDriver(virPCIDevicePtr dev);
> void virPCIDeviceSetUsedBy(virPCIDevice *dev,
> - const char *used_by);
> -const char *virPCIDeviceGetUsedBy(virPCIDevice *dev);
> + const char *drv_name,
> + const char *dom_name);
> +int virPCIDeviceGetUsedBy(virPCIDevice *dev,
> + char **drv_name,
> + char **dom_name);
>
Parameters not aligned properly in these two function declarations.
> unsigned int virPCIDeviceGetUnbindFromStub(virPCIDevicePtr dev);
> void virPCIDeviceSetUnbindFromStub(virPCIDevice *dev,
> bool unbind);
> diff --git a/src/util/virscsi.c b/src/util/virscsi.c
> index 32e438b..dc1eebb 100644
> --- a/src/util/virscsi.c
> +++ b/src/util/virscsi.c
> @@ -55,7 +55,10 @@ struct _virSCSIDevice {
> char *name; /* adapter:bus:target:unit */
> char *id; /* model:vendor */
> char *sg_path; /* e.g. /dev/sg2 */
> - const char *used_by; /* name of the domain using this dev */
> +
> + /* driver:domain using this dev */
> + const char *used_by_drvname;
> + const char *used_by_domname;
>
> bool readonly;
> };
> @@ -267,15 +270,22 @@ virSCSIDeviceFree(virSCSIDevicePtr dev)
>
> void
> virSCSIDeviceSetUsedBy(virSCSIDevicePtr dev,
> - const char *name)
> + const char *drvname,
> + const char *domname)
> {
> - dev->used_by = name;
> + dev->used_by_drvname = drvname;
> + dev->used_by_domname = domname;
> }
>
> -const char *
> -virSCSIDeviceGetUsedBy(virSCSIDevicePtr dev)
> +int
> +virSCSIDeviceGetUsedBy(virSCSIDevicePtr dev, char **drvname, char
**domname)
> {
> - return dev->used_by;
> + if (VIR_STRDUP(*drvname, dev->used_by_drvname) < 0)
> + return -1;
> + if (VIR_STRDUP(*domname, dev->used_by_domname) < 0)
> + return -1;
> +
> + return 0;
> }
>
> const char *
> diff --git a/src/util/virscsi.h b/src/util/virscsi.h
> index cce5df4..89b3e5d 100644
> --- a/src/util/virscsi.h
> +++ b/src/util/virscsi.h
> @@ -49,8 +49,12 @@ virSCSIDevicePtr virSCSIDeviceNew(const char *adapter,
> bool readonly);
>
> void virSCSIDeviceFree(virSCSIDevicePtr dev);
> -void virSCSIDeviceSetUsedBy(virSCSIDevicePtr dev, const char *name);
> -const char *virSCSIDeviceGetUsedBy(virSCSIDevicePtr dev);
> +void virSCSIDeviceSetUsedBy(virSCSIDevicePtr dev,
> + const char *drvname,
> + const char *domname);
> +int virSCSIDeviceGetUsedBy(virSCSIDevicePtr dev,
> + char **drvname,
> + char **domname);
> const char *virSCSIDeviceGetName(virSCSIDevicePtr dev);
> unsigned int virSCSIDeviceGetAdapter(virSCSIDevicePtr dev);
> unsigned int virSCSIDeviceGetBus(virSCSIDevicePtr dev);
> diff --git a/src/util/virusb.c b/src/util/virusb.c
> index e901618..54d836d 100644
> --- a/src/util/virusb.c
> +++ b/src/util/virusb.c
> @@ -55,7 +55,10 @@ struct _virUSBDevice {
> char name[USB_ADDR_LEN]; /* domain:bus:slot.function */
> char id[USB_ID_LEN]; /* product vendor */
> char *path;
> - const char *used_by; /* name of the domain using this
dev */
> +
> + /* driver:domain using this dev */
> + const char *used_by_drvname;
> + const char *used_by_domname;
> };
>
> struct _virUSBDeviceList {
> @@ -378,16 +381,24 @@ virUSBDeviceFree(virUSBDevicePtr dev)
> VIR_FREE(dev);
> }
>
> -
> void virUSBDeviceSetUsedBy(virUSBDevicePtr dev,
> - const char *name)
> + const char *drv_name,
> + const char *dom_name)
> {
> - dev->used_by = name;
> + dev->used_by_drvname = drv_name;
> + dev->used_by_domname = dom_name;
> }
>
> -const char * virUSBDeviceGetUsedBy(virUSBDevicePtr dev)
> +int virUSBDeviceGetUsedBy(virUSBDevicePtr dev,
> + char **drv_name,
> + char **dom_name)
>
Parameter alignment.
This patch is looking good, but since I'm not terribly familiar with
this area of libvirt and historically there have been quite a few bugs
related to passthrough, it would be best if one of the devs familiar
with this code (Laine, Osier) could also review it.
Regards,
Jim
Thanks a lot for your review and comment.
Since this patch affect existing qemu/lxc driver too, I also hope some one
expert in that could review and point out problem if there is.
Thanks,
Chunyan
> {
> - return dev->used_by;
> + if (VIR_STRDUP(*drv_name, dev->used_by_drvname) < 0)
> + return -1;
> + if (VIR_STRDUP(*dom_name, dev->used_by_domname) < 0)
> + return -1;
> +
> + return 0;
> }
>
> const char *virUSBDeviceGetName(virUSBDevicePtr dev)
> diff --git a/src/util/virusb.h b/src/util/virusb.h
> index aa59d12..5f1df58 100644
> --- a/src/util/virusb.h
> +++ b/src/util/virusb.h
> @@ -60,8 +60,12 @@ int virUSBDeviceFind(unsigned int vendor,
> virUSBDevicePtr *usb);
>
> void virUSBDeviceFree(virUSBDevicePtr dev);
> -void virUSBDeviceSetUsedBy(virUSBDevicePtr dev, const char *name);
> -const char *virUSBDeviceGetUsedBy(virUSBDevicePtr dev);
> +void virUSBDeviceSetUsedBy(virUSBDevicePtr dev,
> + const char *drv_name,
> + const char *dom_name);
> +int virUSBDeviceGetUsedBy(virUSBDevicePtr dev,
> + char **drv_name,
> + char **dom_name);
> const char *virUSBDeviceGetName(virUSBDevicePtr dev);
>
> unsigned int virUSBDeviceGetBus(virUSBDevicePtr dev);
>