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qemu: Allow to attach/detach controller device persistently
* src/conf/domain_conf.c: - Add virDomainControllerFind to find controller device by type and index. - Add virDomainControllerRemove to remove the controller device from maintained controler list. * src/conf/domain_conf.h: - Declare the two new helpers. * src/libvirt_private.syms: - Expose private symbols for the two new helpers. * src/qemu/qemu_driver.c: - Support attach/detach controller device persistently * src/qemu/qemu_hotplug.c: - Use the two helpers to simplify the codes.
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@ -7556,6 +7556,43 @@ void virDomainControllerInsertPreAlloced(virDomainDefPtr def,
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def->ncontrollers++;
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}
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int
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virDomainControllerFind(virDomainDefPtr def,
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int type, int idx)
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{
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int i;
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for (i = 0 ; i < def->ncontrollers ; i++) {
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if ((def->controllers[i]->type == type) &&
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(def->controllers[i]->idx == idx)) {
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return i;
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}
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}
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return -1;
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}
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virDomainControllerDefPtr
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virDomainControllerRemove(virDomainDefPtr def, size_t i)
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{
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virDomainControllerDefPtr controller = def->controllers[i];
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if (def->ncontrollers > 1) {
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memmove(def->controllers + i,
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def->controllers + i + 1,
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sizeof(*def->controllers) *
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(def->ncontrollers - (i + 1)));
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def->ncontrollers--;
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if (VIR_REALLOC_N(def->controllers, def->ncontrollers) < 0) {
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/* ignore, harmless */
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}
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} else {
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VIR_FREE(def->controllers);
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def->ncontrollers = 0;
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}
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return controller;
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}
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int virDomainLeaseIndex(virDomainDefPtr def,
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virDomainLeaseDefPtr lease)
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@ -2048,7 +2048,8 @@ int virDomainControllerInsert(virDomainDefPtr def,
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virDomainControllerDefPtr controller);
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void virDomainControllerInsertPreAlloced(virDomainDefPtr def,
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virDomainControllerDefPtr controller);
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int virDomainControllerFind(virDomainDefPtr def, int type, int idx);
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virDomainControllerDefPtr virDomainControllerRemove(virDomainDefPtr def, size_t i);
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int virDomainLeaseIndex(virDomainDefPtr def,
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virDomainLeaseDefPtr lease);
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@ -266,12 +266,14 @@ virDomainClockOffsetTypeFromString;
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virDomainClockOffsetTypeToString;
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virDomainConfigFile;
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virDomainControllerDefFree;
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virDomainControllerFind;
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virDomainControllerInsert;
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virDomainControllerInsertPreAlloced;
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virDomainControllerModelSCSITypeFromString;
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virDomainControllerModelSCSITypeToString;
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virDomainControllerModelUSBTypeFromString;
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virDomainControllerModelUSBTypeToString;
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virDomainControllerRemove;
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virDomainControllerTypeToString;
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virDomainCpuPlacementModeTypeFromString;
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virDomainCpuPlacementModeTypeToString;
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@ -5535,6 +5535,7 @@ qemuDomainAttachDeviceConfig(virDomainDefPtr vmdef,
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virDomainNetDefPtr net;
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virDomainHostdevDefPtr hostdev;
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virDomainLeaseDefPtr lease;
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virDomainControllerDefPtr controller;
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switch (dev->type) {
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case VIR_DOMAIN_DEVICE_DISK:
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@ -5607,6 +5608,23 @@ qemuDomainAttachDeviceConfig(virDomainDefPtr vmdef,
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dev->data.lease = NULL;
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break;
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case VIR_DOMAIN_DEVICE_CONTROLLER:
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controller = dev->data.controller;
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if (virDomainControllerFind(vmdef, controller->type,
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controller->idx) > 0) {
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virReportError(VIR_ERR_INVALID_ARG, "%s",
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_("Target already exists"));
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return -1;
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}
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if (virDomainControllerInsert(vmdef, controller) < 0)
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return -1;
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dev->data.controller = NULL;
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if (qemuDomainAssignAddresses(vmdef, NULL, NULL) < 0)
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return -1;
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break;
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default:
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virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
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_("persistent attach of device is not supported"));
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@ -5624,6 +5642,8 @@ qemuDomainDetachDeviceConfig(virDomainDefPtr vmdef,
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virDomainNetDefPtr net, det_net;
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virDomainHostdevDefPtr hostdev, det_hostdev;
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virDomainLeaseDefPtr lease, det_lease;
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virDomainControllerDefPtr cont, det_cont;
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int idx;
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switch (dev->type) {
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case VIR_DOMAIN_DEVICE_DISK:
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@ -5650,8 +5670,6 @@ qemuDomainDetachDeviceConfig(virDomainDefPtr vmdef,
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break;
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case VIR_DOMAIN_DEVICE_HOSTDEV: {
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int idx;
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hostdev = dev->data.hostdev;
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if ((idx = virDomainHostdevFind(vmdef, hostdev, &det_hostdev)) < 0) {
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virReportError(VIR_ERR_INVALID_ARG, "%s",
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@ -5674,6 +5692,19 @@ qemuDomainDetachDeviceConfig(virDomainDefPtr vmdef,
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virDomainLeaseDefFree(det_lease);
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break;
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case VIR_DOMAIN_DEVICE_CONTROLLER:
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cont = dev->data.controller;
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if ((idx = virDomainControllerFind(vmdef, cont->type,
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cont->idx)) < 0) {
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virReportError(VIR_ERR_INVALID_ARG, "%s",
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_("device not present in domain configuration"));
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return -1;
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}
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det_cont = virDomainControllerRemove(vmdef, idx);
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virDomainControllerDefFree(det_cont);
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break;
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default:
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virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
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_("persistent detach of device is not supported"));
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@ -308,21 +308,17 @@ int qemuDomainAttachPciControllerDevice(struct qemud_driver *driver,
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virDomainObjPtr vm,
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virDomainControllerDefPtr controller)
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{
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int i;
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int ret = -1;
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const char* type = virDomainControllerTypeToString(controller->type);
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char *devstr = NULL;
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qemuDomainObjPrivatePtr priv = vm->privateData;
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bool releaseaddr = false;
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for (i = 0 ; i < vm->def->ncontrollers ; i++) {
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if ((vm->def->controllers[i]->type == controller->type) &&
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(vm->def->controllers[i]->idx == controller->idx)) {
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virReportError(VIR_ERR_OPERATION_FAILED,
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_("target %s:%d already exists"),
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type, controller->idx);
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return -1;
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}
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if (virDomainControllerFind(vm->def, controller->type, controller->idx) > 0) {
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virReportError(VIR_ERR_OPERATION_FAILED,
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_("target %s:%d already exists"),
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type, controller->idx);
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return -1;
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}
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if (qemuCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE)) {
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@ -1875,19 +1871,13 @@ int qemuDomainDetachPciControllerDevice(struct qemud_driver *driver,
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virDomainObjPtr vm,
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virDomainDeviceDefPtr dev)
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{
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int i, ret = -1;
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int idx, ret = -1;
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virDomainControllerDefPtr detach = NULL;
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qemuDomainObjPrivatePtr priv = vm->privateData;
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for (i = 0 ; i < vm->def->ncontrollers ; i++) {
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if ((vm->def->controllers[i]->type == dev->data.controller->type) &&
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(vm->def->controllers[i]->idx == dev->data.controller->idx)) {
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detach = vm->def->controllers[i];
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break;
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}
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}
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if (!detach) {
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if ((idx = virDomainControllerFind(vm->def,
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dev->data.controller->type,
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dev->data.controller->idx)) < 0) {
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virReportError(VIR_ERR_OPERATION_FAILED,
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_("disk controller %s:%d not found"),
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virDomainControllerTypeToString(dev->data.controller->type),
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@ -1895,6 +1885,8 @@ int qemuDomainDetachPciControllerDevice(struct qemud_driver *driver,
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goto cleanup;
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}
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detach = vm->def->controllers[idx];
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if (!virDomainDeviceAddressIsValid(&detach->info,
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VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI)) {
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virReportError(VIR_ERR_OPERATION_FAILED, "%s",
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@ -1935,27 +1927,14 @@ int qemuDomainDetachPciControllerDevice(struct qemud_driver *driver,
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}
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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if (vm->def->ncontrollers > 1) {
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memmove(vm->def->controllers + i,
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vm->def->controllers + i + 1,
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sizeof(*vm->def->controllers) *
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(vm->def->ncontrollers - (i + 1)));
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vm->def->ncontrollers--;
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if (VIR_REALLOC_N(vm->def->controllers, vm->def->ncontrollers) < 0) {
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/* ignore, harmless */
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}
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} else {
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VIR_FREE(vm->def->controllers);
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vm->def->ncontrollers = 0;
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}
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virDomainControllerRemove(vm->def, idx);
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virDomainControllerDefFree(detach);
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if (qemuCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE) &&
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qemuDomainPCIAddressReleaseSlot(priv->pciaddrs,
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detach->info.addr.pci.slot) < 0)
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VIR_WARN("Unable to release PCI address on controller");
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virDomainControllerDefFree(detach);
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ret = 0;
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cleanup:
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