[libvirt] [PATCH 08/16] hyperv: introduce basic network driver
Jason Miesionczek
jmiesionczek at datto.com
Tue Aug 9 12:39:16 UTC 2016
---
src/Makefile.am | 1 +
src/hyperv/hyperv_driver.c | 2 +
src/hyperv/hyperv_network_driver.c | 124 +++++++++++++++++++++++++++++++++++++
src/hyperv/hyperv_network_driver.h | 30 +++++++++
src/hyperv/hyperv_wmi.c | 39 ++++++++++++
src/hyperv/hyperv_wmi.h | 17 +++++
6 files changed, 213 insertions(+)
create mode 100644 src/hyperv/hyperv_network_driver.c
create mode 100644 src/hyperv/hyperv_network_driver.h
diff --git a/src/Makefile.am b/src/Makefile.am
index 922b9b8..d03e6b0 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -888,6 +888,7 @@ ESX_DRIVER_EXTRA_DIST = \
HYPERV_DRIVER_SOURCES = \
hyperv/hyperv_private.h \
hyperv/hyperv_driver.c hyperv/hyperv_driver.h \
+ hyperv/hyperv_network_driver.c hyperv/hyperv_network_driver.h \
hyperv/hyperv_util.c hyperv/hyperv_util.h \
hyperv/hyperv_wmi.c hyperv/hyperv_wmi.h \
hyperv/hyperv_wmi_classes.c hyperv/hyperv_wmi_classes.h \
diff --git a/src/hyperv/hyperv_driver.c b/src/hyperv/hyperv_driver.c
index aea7837..4c094e7 100644
--- a/src/hyperv/hyperv_driver.c
+++ b/src/hyperv/hyperv_driver.c
@@ -30,6 +30,7 @@
#include "virlog.h"
#include "viruuid.h"
#include "hyperv_driver.h"
+#include "hyperv_network_driver.h"
#include "hyperv_private.h"
#include "hyperv_util.h"
#include "hyperv_wmi.h"
@@ -1853,6 +1854,7 @@ hypervDebugHandler(const char *message, debug_level_e level,
static virConnectDriver hypervConnectDriver = {
.hypervisorDriver = &hypervHypervisorDriver,
+ .networkDriver = &hypervNetworkDriver,
};
int
diff --git a/src/hyperv/hyperv_network_driver.c b/src/hyperv/hyperv_network_driver.c
new file mode 100644
index 0000000..00037ae
--- /dev/null
+++ b/src/hyperv/hyperv_network_driver.c
@@ -0,0 +1,124 @@
+/*
+ * hyperv_network_driver.c: network driver functions for managing
+ * Microsoft Hyper-V host networks
+ *
+ * Copyright (C) 2011 Matthias Bolte <matthias.bolte at googlemail.com>
+ *
+ * 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/>.
+ *
+ */
+
+#include <config.h>
+
+#include "internal.h"
+#include "virerror.h"
+#include "datatypes.h"
+#include "viralloc.h"
+#include "viruuid.h"
+#include "virstring.h"
+#include "hyperv_network_driver.h"
+#include "hyperv_wmi.h"
+#include "network_conf.h"
+
+#define VIR_FROM_THIS VIR_FROM_HYPERV
+
+static virNetworkPtr
+hypervNetworkLookupByName(virConnectPtr conn, const char *name)
+{
+ virNetworkPtr network = NULL;
+ hypervPrivate *priv = conn->privateData;
+ virBuffer query = VIR_BUFFER_INITIALIZER;
+ Msvm_VirtualSwitch *virtualSwitch = NULL;
+
+ virBufferAddLit(&query, MSVM_VIRTUALSWITCH_WQL_SELECT);
+ virBufferAsprintf(&query, "where Description = \"%s\" and ElementName = \"%s\"",
+ "Microsoft Virtual Switch", name);
+ if (hypervGetMsvmVirtualSwitchList(priv, &query, &virtualSwitch) < 0) {
+ goto cleanup;
+ }
+ if (virtualSwitch == NULL) {
+ virReportError(VIR_ERR_NO_NETWORK,
+ _("No network found with name %s"), name);
+ goto cleanup;
+ }
+
+ hypervMsvmVirtualSwitchToNetwork(conn, virtualSwitch, &network);
+
+ cleanup:
+ hypervFreeObject(priv, (hypervObject *) virtualSwitch);
+ virBufferFreeAndReset(&query);
+
+ return network;
+}
+
+static char *
+hypervNetworkGetXMLDesc(virNetworkPtr network, unsigned int flags)
+{
+ char *xml = NULL;
+ char uuid_string[VIR_UUID_STRING_BUFLEN];
+ hypervPrivate *priv = network->conn->privateData;
+ virNetworkDefPtr def = NULL;
+ virBuffer query = VIR_BUFFER_INITIALIZER;
+ Msvm_VirtualSwitch *virtualSwitch = NULL;
+
+ /* Flags checked by virNetworkDefFormat */
+
+ if (VIR_ALLOC(def) < 0) {
+ virReportOOMError();
+ goto cleanup;
+ }
+
+ virUUIDFormat(network->uuid, uuid_string);
+
+ /* Get Msvm_VirtualSwitch */
+ virBufferAddLit(&query, MSVM_VIRTUALSWITCH_WQL_SELECT);
+ virBufferAsprintf(&query, "where Name = \"%s\"", uuid_string);
+ if (hypervGetMsvmVirtualSwitchList(priv, &query, &virtualSwitch) < 0) {
+ goto cleanup;
+ }
+ if (virtualSwitch == NULL) {
+ virReportError(VIR_ERR_NO_NETWORK,
+ _("No network found with UUID %s"), uuid_string);
+ goto cleanup;
+ }
+
+ /* Fill struct */
+ if (virUUIDParse(virtualSwitch->data->Name, def->uuid) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Could not parse UUID from string '%s'"),
+ virtualSwitch->data->Name);
+ return NULL;
+ }
+
+ if (VIR_STRDUP(def->name, virtualSwitch->data->ElementName) < 0)
+ goto cleanup;
+
+ xml = virNetworkDefFormat(def, flags);
+
+ cleanup:
+ virNetworkDefFree(def);
+ hypervFreeObject(priv, (hypervObject *)virtualSwitch);
+ virBufferFreeAndReset(&query);
+
+ return xml;
+}
+
+
+
+virNetworkDriver hypervNetworkDriver = {
+ .name = "Hyper-V",
+ .networkLookupByName = hypervNetworkLookupByName, /* 1.2.10 */
+ .networkGetXMLDesc = hypervNetworkGetXMLDesc, /* 1.2.10 */
+};
diff --git a/src/hyperv/hyperv_network_driver.h b/src/hyperv/hyperv_network_driver.h
new file mode 100644
index 0000000..54a4792
--- /dev/null
+++ b/src/hyperv/hyperv_network_driver.h
@@ -0,0 +1,30 @@
+/*
+ * hyperv_network_driver.h: network driver functions for managing
+ * Microsoft Hyper-V host networks
+ *
+ * Copyright (C) 2011 Matthias Bolte <matthias.bolte at googlemail.com>
+ *
+ * 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/>.
+ *
+ */
+
+#ifndef __HYPERV_NETWORK_DRIVER_H__
+# define __HYPERV_NETWORK_DRIVER_H__
+
+int hypervNetworkRegister(void);
+
+extern virNetworkDriver hypervNetworkDriver;
+
+#endif /* __HYPERV_NETWORK_DRIVER_H__ */
diff --git a/src/hyperv/hyperv_wmi.c b/src/hyperv/hyperv_wmi.c
index 51d9b43..2334c49 100644
--- a/src/hyperv/hyperv_wmi.c
+++ b/src/hyperv/hyperv_wmi.c
@@ -1326,5 +1326,44 @@ hypervInvokeMethod(hypervPrivate *priv, invokeXmlParam *param_t, int nbParameter
}
+int
+hypervMsvmVirtualSwitchToNetwork(virConnectPtr conn,
+ Msvm_VirtualSwitch *virtualSwitch, virNetworkPtr *network)
+{
+ unsigned char uuid[VIR_UUID_BUFLEN];
+ char *rawUuid = NULL;
+ char *uuidBuf;
+
+ if (network == NULL || *network != NULL) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Invalid argument"));
+ return -1;
+ }
+
+ // Switch-SM-91b305f3-9a9e-408b-8b04-0ecff33aaba8-0
+ // need to parse out the 'Switch-SM-' and '-0' so that its a proper UUID
+ rawUuid = virtualSwitch->data->Name;
+ uuidBuf = (char *)calloc(37, sizeof(char));
+ strncpy(uuidBuf, rawUuid+10, 36);
+
+ if (virUUIDParse(uuidBuf, uuid) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Could not parse UUID from string '%s'"),
+ virtualSwitch->data->Name);
+ free(uuidBuf);
+ return -1;
+ }
+
+ *network = virGetNetwork(conn, virtualSwitch->data->ElementName, uuid);
+
+ if (*network == NULL) {
+ free(uuidBuf);
+ return -1;
+ }
+
+ free(uuidBuf);
+ return 0;
+}
+
+
#include "hyperv_wmi.generated.c"
diff --git a/src/hyperv/hyperv_wmi.h b/src/hyperv/hyperv_wmi.h
index c14d229..67f45fb 100644
--- a/src/hyperv/hyperv_wmi.h
+++ b/src/hyperv/hyperv_wmi.h
@@ -172,6 +172,23 @@ int hypervMsvmComputerSystemFromDomain(virDomainPtr domain,
Msvm_ComputerSystem **computerSystem);
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Msvm_VirtualSwitch
+ */
+
+int hypervMsvmVirtualSwitchToNetwork(virConnectPtr conn,
+ Msvm_VirtualSwitch *virtualSwitch, virNetworkPtr *network);
+
+
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Msvm_VirtualSwitch
+ */
+
+int hypervMsvmVirtualSwitchToNetwork(virConnectPtr conn,
+ Msvm_VirtualSwitch *virtualSwitch, virNetworkPtr *network);
+
+
# include "hyperv_wmi.generated.h"
--
2.7.4
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