[libvirt] [PATCH v2 11/14] libxl: support network device attach/detach
Marek Marczykowski-Górecki
marmarek at invisiblethingslab.com
Thu Jun 13 01:54:13 UTC 2013
Both live and config.
Signed-off-by: Marek Marczykowski-Górecki <marmarek at invisiblethingslab.com>
---
src/libxl/libxl_driver.c | 164 ++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 161 insertions(+), 3 deletions(-)
diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c
index 7b50853..ae0d4f7 100644
--- a/src/libxl/libxl_driver.c
+++ b/src/libxl/libxl_driver.c
@@ -3417,6 +3417,111 @@ cleanup:
}
static int
+libxlDomainAttachDeviceNetLive(libxlDriverPrivatePtr driver,
+ libxlDomainObjPrivatePtr priv,
+ virDomainObjPtr vm,
+ virDomainDeviceDefPtr dev)
+{
+ virDomainNetDefPtr l_net = dev->data.net;
+ libxl_device_nic x_nic;
+ char mac[VIR_MAC_STRING_BUFLEN];
+ int ret = -1;
+
+ switch (dev->data.net->type) {
+ case VIR_DOMAIN_NET_TYPE_ETHERNET:
+ case VIR_DOMAIN_NET_TYPE_BRIDGE:
+ /* -2 means "multiple matches" so then fail also */
+ if (virDomainNetFindIdx(vm->def, dev->data.net) != -1) {
+ virReportError(VIR_ERR_OPERATION_FAILED,
+ _("device matching mac address %s already exists"),
+ virMacAddrFormat(&dev->data.net->mac, mac));
+ goto cleanup;
+ }
+
+ if (libxlMakeNic(driver, l_net, &x_nic) < 0)
+ goto cleanup;
+
+ if ((ret = libxl_device_nic_add(priv->ctx, vm->def->id,
+ &x_nic, NULL)) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("libxenlight failed to attach net '%s'"),
+ virMacAddrFormat(&dev->data.net->mac, mac));
+ goto cleanup;
+ }
+
+ virDomainNetInsert(vm->def, l_net);
+
+ break;
+ default:
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("net device type '%s' cannot be hotplugged"),
+ virDomainNetTypeToString(l_net->type));
+ break;
+ }
+
+cleanup:
+ return ret;
+}
+
+static int
+libxlDomainDetachDeviceNetLive(libxlDriverPrivatePtr driver,
+ libxlDomainObjPrivatePtr priv,
+ virDomainObjPtr vm,
+ virDomainDeviceDefPtr dev)
+{
+ virDomainNetDefPtr l_net = NULL;
+ libxl_device_nic x_nic;
+ char mac[VIR_MAC_STRING_BUFLEN];
+ int i;
+ int ret = -1;
+
+ switch (dev->data.net->type) {
+ case VIR_DOMAIN_NET_TYPE_ETHERNET:
+ case VIR_DOMAIN_NET_TYPE_BRIDGE:
+ if ((i = virDomainNetFindIdx(vm->def, dev->data.net)) < 0) {
+ if (i == -2) {
+
+ virReportError(VIR_ERR_OPERATION_FAILED,
+ _("multiple devices matching mac address %s found"),
+ virMacAddrFormat(&dev->data.net->mac, mac));
+ }
+ else {
+ virReportError(VIR_ERR_OPERATION_FAILED,
+ _("network device %s not found"),
+ virMacAddrFormat(&dev->data.net->mac, mac));
+ }
+ goto cleanup;
+ }
+
+ l_net = vm->def->nets[i];
+
+ if (libxlMakeNic(driver, l_net, &x_nic) < 0)
+ goto cleanup;
+
+ if ((ret = libxl_device_nic_remove(priv->ctx, vm->def->id,
+ &x_nic, NULL)) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("libxenlight failed to detach nic '%d'"),
+ i);
+ goto cleanup;
+ }
+
+ virDomainNetRemove(vm->def, i);
+ virDomainNetDefFree(l_net);
+
+ break;
+ default:
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("net device type '%s' cannot hot unplugged"),
+ virDomainNetTypeToString(dev->data.net->type));
+ break;
+ }
+
+cleanup:
+ return ret;
+}
+
+static int
libxlDomainAttachDeviceLive(libxlDriverPrivatePtr driver,
libxlDomainObjPrivatePtr priv, virDomainObjPtr vm,
virDomainDeviceDefPtr dev)
@@ -3430,6 +3535,12 @@ libxlDomainAttachDeviceLive(libxlDriverPrivatePtr driver,
dev->data.disk = NULL;
break;
+ case VIR_DOMAIN_DEVICE_NET:
+ ret = libxlDomainAttachDeviceNetLive(driver, priv, vm, dev);
+ if (!ret)
+ dev->data.net = NULL;
+ break;
+
default:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("device type '%s' cannot be attached"),
@@ -3444,6 +3555,8 @@ static int
libxlDomainAttachDeviceConfig(virDomainDefPtr vmdef, virDomainDeviceDefPtr dev)
{
virDomainDiskDefPtr disk;
+ virDomainNetDefPtr net;
+ char mac[VIR_MAC_STRING_BUFLEN];
switch (dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
@@ -3461,6 +3574,22 @@ libxlDomainAttachDeviceConfig(virDomainDefPtr vmdef, virDomainDeviceDefPtr dev)
dev->data.disk = NULL;
break;
+ case VIR_DOMAIN_DEVICE_NET:
+ net = dev->data.net;
+ if (virDomainNetFindIdx(vmdef, net) >= 0) {
+ virReportError(VIR_ERR_INVALID_ARG,
+ _("net device with mac %s already exists."),
+ virMacAddrFormat(&net->mac, mac));
+ return -1;
+ }
+ if (virDomainNetInsert(vmdef, net)) {
+ virReportOOMError();
+ return -1;
+ }
+ /* vmdef has the pointer. Generic codes for vmdef will do all jobs */
+ dev->data.net = NULL;
+ break;
+
default:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("persistent attach of device is not supported"));
@@ -3482,6 +3611,10 @@ libxlDomainDetachDeviceLive(libxlDriverPrivatePtr driver,
ret = libxlDomainDetachDeviceDiskLive(driver, priv, vm, dev);
break;
+ case VIR_DOMAIN_DEVICE_NET:
+ ret = libxlDomainDetachDeviceNetLive(driver, priv, vm, dev);
+ break;
+
default:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("device type '%s' cannot be detached"),
@@ -3495,20 +3628,45 @@ libxlDomainDetachDeviceLive(libxlDriverPrivatePtr driver,
static int
libxlDomainDetachDeviceConfig(virDomainDefPtr vmdef, virDomainDeviceDefPtr dev)
{
- virDomainDiskDefPtr disk, detach;
+ virDomainDiskDefPtr disk, disk_detach;
+ virDomainNetDefPtr net, net_detach;
+ char mac[VIR_MAC_STRING_BUFLEN];
+ int net_idx;
int ret = -1;
switch (dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
disk = dev->data.disk;
- if (!(detach = virDomainDiskRemoveByName(vmdef, disk->dst))) {
+ if (!(disk_detach = virDomainDiskRemoveByName(vmdef, disk->dst))) {
virReportError(VIR_ERR_INVALID_ARG,
_("no target device %s"), disk->dst);
break;
}
- virDomainDiskDefFree(detach);
+ virDomainDiskDefFree(disk_detach);
+ ret = 0;
+ break;
+
+ case VIR_DOMAIN_DEVICE_NET:
+ net = dev->data.net;
+ if ((net_idx = virDomainNetFindIdx(vmdef, net)) < 0) {
+ if (net_idx == -2) {
+
+ virReportError(VIR_ERR_OPERATION_FAILED,
+ _("multiple devices matching mac address %s found"),
+ virMacAddrFormat(&dev->data.net->mac, mac));
+ }
+ else {
+ virReportError(VIR_ERR_OPERATION_FAILED,
+ _("network device %s not found"),
+ virMacAddrFormat(&dev->data.net->mac, mac));
+ }
+ return -1;
+ }
+ net_detach = virDomainNetRemove(vmdef, net_idx);
+ virDomainNetDefFree(net_detach);
ret = 0;
break;
+
default:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("persistent detach of device is not supported"));
--
1.8.1.4
More information about the libvir-list
mailing list