Defer MAC registration until net devices are actually going
to be used by the guest. This patch does so by setting the
devices online just before starting guest CPUs.
Signed-off-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxxxxxxx>
---
src/Makefile.am | 1 +
src/conf/domain_conf.h | 2 ++
src/lxc/lxc_process.c | 3 +-
src/qemu/qemu_command.c | 6 +++-
src/qemu/qemu_hotplug.c | 7 +++++
src/qemu/qemu_interface.c | 65 +++++++++++++++++++++++++++++++++++++++++++
src/qemu/qemu_interface.h | 33 ++++++++++++++++++++++
src/qemu/qemu_process.c | 4 +++
src/util/virnetdevmacvlan.c | 8 ++++--
src/util/virnetdevmacvlan.h | 2 ++
10 files changed, 126 insertions(+), 5 deletions(-)
create mode 100644 src/qemu/qemu_interface.c
create mode 100644 src/qemu/qemu_interface.h
diff --git a/src/Makefile.am b/src/Makefile.am
index 35720be..e3d2e36 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -687,6 +687,7 @@ QEMU_DRIVER_SOURCES = \
qemu/qemu_domain.c qemu/qemu_domain.h \
qemu/qemu_cgroup.c qemu/qemu_cgroup.h \
qemu/qemu_hostdev.c qemu/qemu_hostdev.h \
+ qemu/qemu_interface.c qemu/qemu_interface.h \
qemu/qemu_hotplug.c qemu/qemu_hotplug.h \
qemu/qemu_hotplugpriv.h \
qemu/qemu_conf.c qemu/qemu_conf.h \
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 1122eb2..8375106 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -921,6 +921,8 @@ struct _virDomainNetDef {
virNetDevBandwidthPtr bandwidth;
virNetDevVlan vlan;
int linkstate;
+ /* vmOp value saved if deferring interface start */
+ virNetDevVPortProfileOp vmOp;
};
/* Used for prefix of ifname of any network name generated dynamically
diff --git a/src/lxc/lxc_process.c b/src/lxc/lxc_process.c
index ab0c5d0..3083ed3 100644
--- a/src/lxc/lxc_process.c
+++ b/src/lxc/lxc_process.c
@@ -302,6 +302,7 @@ char *virLXCProcessSetupInterfaceDirect(virConnectPtr conn,
virNetDevBandwidthPtr bw;
virNetDevVPortProfilePtr prof;
virLXCDriverConfigPtr cfg = virLXCDriverGetConfig(driver);
+ unsigned int macvlan_create_flags = VIR_NETDEV_MACVLAN_CREATE_IFUP;
/* XXX how todo bandwidth controls ?
* Since the 'net-ifname' is about to be moved to a different
@@ -333,7 +334,7 @@ char *virLXCProcessSetupInterfaceDirect(virConnectPtr conn,
net->ifname, &net->mac,
virDomainNetGetActualDirectDev(net),
virDomainNetGetActualDirectMode(net),
- 0, false, def->uuid,
+ macvlan_create_flags, false, def->uuid,
virDomainNetGetActualVirtPortProfile(net),
&res_ifname,
VIR_NETDEV_VPORT_PROFILE_OP_CREATE,
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 314d8a3..a5662f5 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -196,6 +196,9 @@ qemuPhysIfaceConnect(virDomainDefPtr def,
net->ifname = res_ifname;
}
+ /* Save vport profile op for later */
+ net->vmOp = vmop;
+
virObjectUnref(cfg);
return rc;
@@ -294,7 +297,7 @@ qemuNetworkIfaceConnect(virDomainDefPtr def,
{
char *brname = NULL;
int ret = -1;
- unsigned int tap_create_flags = VIR_NETDEV_TAP_CREATE_IFUP;
+ unsigned int tap_create_flags = 0;
bool template_ifname = false;
int actualType = virDomainNetGetActualType(net);
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
@@ -354,6 +357,7 @@ qemuNetworkIfaceConnect(virDomainDefPtr def,
goto cleanup;
}
} else {
+ tap_create_flags |= VIR_NETDEV_TAP_CREATE_IFUP;
if (qemuCreateInBridgePortWithHelper(cfg, brname,
&net->ifname,
tapfd, tap_create_flags) < 0) {
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 5e8aa4e..98e7764 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -49,6 +49,7 @@
#include "virstoragefile.h"
#include "virstring.h"
#include "virtime.h"
+#include "qemu_interface.h"
#define VIR_FROM_THIS VIR_FROM_QEMU
@@ -854,6 +855,9 @@ int qemuDomainAttachNetDevice(virConnectPtr conn,
if (networkAllocateActualDevice(vm->def, net) < 0)
goto cleanup;
+ /* Set device online immediately */
+ qemuInterfaceStartDevice(net);
+
actualType = virDomainNetGetActualType(net);
if (actualType == VIR_DOMAIN_NET_TYPE_HOSTDEV) {
@@ -2030,6 +2034,9 @@ qemuDomainChangeNet(virQEMUDriverPtr driver,
goto cleanup;
}
+ /* Set device online immediately */
+ qemuInterfaceStartDevice(newdev);
+
newType = virDomainNetGetActualType(newdev);
if (newType == VIR_DOMAIN_NET_TYPE_HOSTDEV) {
diff --git a/src/qemu/qemu_interface.c b/src/qemu/qemu_interface.c
new file mode 100644
index 0000000..b70b6eb
--- /dev/null
+++ b/src/qemu/qemu_interface.c
@@ -0,0 +1,65 @@
+/*
+ * qemu_interface.c: QEMU interface management
+ *
+ * Copyright (C) 2014 Red Hat, Inc.
+ * Copyright IBM Corp. 2014
+ *
+ * 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: Matthew J. Rosato <mjrosato@xxxxxxxxxxxxxxxxxx>
+ */
+
+#include <config.h>
+
+#include "qemu_interface.h"
+#include "virnetdev.h"
+#include "virnetdevtap.h"
+#include "virnetdevmacvlan.h"
+#include "virnetdevvportprofile.h"
+
+void
+qemuInterfaceStartDevice(virDomainNetDefPtr net)
+{
+ switch (virDomainNetGetActualType(net)) {
+ case VIR_DOMAIN_NET_TYPE_BRIDGE:
+ case VIR_DOMAIN_NET_TYPE_NETWORK:
+ if (virNetDevSetOnline(net->ifname, true) < 0) {
+ ignore_value(virNetDevTapDelete(net->ifname));
+ }
+ break;
+ case VIR_DOMAIN_NET_TYPE_DIRECT:
+ if (virNetDevSetOnline(net->ifname, true) < 0) {
+ ignore_value(virNetDevVPortProfileDisassociate(net->ifname,
+ virDomainNetGetActualVirtPortProfile(net),
+ &net->mac,
+ virDomainNetGetActualDirectDev(net),
+ -1,
+ net->vmOp));
+ }
+ break;
+ }
+}
+
+void
+qemuInterfaceStartDevices(virDomainDefPtr def)
+{
+ size_t i;
+
+ for (i = 0; i < def->nnets; i++) {
+ qemuInterfaceStartDevice(def->nets[i]);
+ }
+
+ return;
+}
diff --git a/src/qemu/qemu_interface.h b/src/qemu/qemu_interface.h
new file mode 100644
index 0000000..dd14556
--- /dev/null
+++ b/src/qemu/qemu_interface.h
@@ -0,0 +1,33 @@
+/*
+ * qemu_interface.h: QEMU interface management
+ *
+ * Copyright (C) 2014 Red Hat, Inc.
+ * Copyright IBM Corp. 2014
+ *
+ * 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: Matthew J. Rosato <mjrosato@xxxxxxxxxxxxxxxxxx>
+ */
+
+#ifndef __QEMU_INTERFACE_H__
+#define __QEMU_INTERFACE_H__
+
+//# include "qemu_conf.h"
+# include "domain_conf.h"
+
+void qemuInterfaceStartDevice(virDomainNetDefPtr net);
+void qemuInterfaceStartDevices(virDomainDefPtr def);
+
+#endif /* __QEMU_INTERFACE_H__ */
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 5b598be..26bd494 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -42,6 +42,7 @@
#include "qemu_hostdev.h"
#include "qemu_hotplug.h"
#include "qemu_migration.h"
+#include "qemu_interface.h"
#include "cpu/cpu.h"
#include "datatypes.h"
@@ -2775,6 +2776,9 @@ qemuProcessStartCPUs(virQEMUDriverPtr driver, virDomainObjPtr vm,
qemuDomainObjPrivatePtr priv = vm->privateData;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
+ /* Bring up netdevs before starting CPUs */
+ qemuInterfaceStartDevices(vm->def);
+
VIR_DEBUG("Using lock state '%s'", NULLSTR(priv->lockState));
if (virDomainLockProcessResume(driver->lockManager, cfg->uri,
vm, priv->lockState) < 0) {
diff --git a/src/util/virnetdevmacvlan.c b/src/util/virnetdevmacvlan.c
index bfbecbf..efb31aa 100644
--- a/src/util/virnetdevmacvlan.c
+++ b/src/util/virnetdevmacvlan.c
@@ -903,9 +903,11 @@ int virNetDevMacVLanCreateWithVPortProfile(const char *tgifname,
goto link_del_exit;
}
- if (virNetDevSetOnline(cr_ifname, true) < 0) {
- rc = -1;
- goto disassociate_exit;
+ if (flags & VIR_NETDEV_MACVLAN_CREATE_IFUP) {
+ if (virNetDevSetOnline(cr_ifname, true) < 0) {
+ rc = -1;
+ goto disassociate_exit;
+ }
}
if (flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP) {
diff --git a/src/util/virnetdevmacvlan.h b/src/util/virnetdevmacvlan.h
index f7895b5..d43446f7 100644
--- a/src/util/virnetdevmacvlan.h
+++ b/src/util/virnetdevmacvlan.h
@@ -44,6 +44,8 @@ typedef enum {
VIR_NETDEV_MACVLAN_CREATE_NONE = 0,
/* Create with a tap device */
VIR_NETDEV_MACVLAN_CREATE_WITH_TAP = 1 << 0,
+ /* Bring the interface up */
+ VIR_NETDEV_MACVLAN_CREATE_IFUP = 1 << 1,
} virNetDevMacVLanCreateFlags;
int virNetDevMacVLanCreate(const char *ifname,
--
1.7.9.5
--
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