[libvirt] [PATCH v3 08/15] conf: expand network device callbacks to cover resolving NIC type
Daniel P. Berrangé
berrange at redhat.com
Mon Feb 5 15:28:22 UTC 2018
Currently the QEMU driver will call directly into the network driver
impl to modify resolve the atual type of NICs with type=network. It
has todo this before it has allocated the actual NIC. This introduces
a callback system to allow us to decouple the QEMU driver from the
network driver.
This is a short term step, as it ought to be possible to achieve the
same end goal by simply querying XML via the public network API. The
QEMU code in question though, has no virConnectPtr conveniently
available at this time.
Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
---
src/conf/domain_conf.c | 17 ++++++++++++++++-
src/conf/domain_conf.h | 15 ++++++++++++++-
src/libvirt_private.syms | 1 +
src/network/bridge_driver.c | 10 +++++-----
src/network/bridge_driver.h | 5 -----
src/qemu/qemu_alias.c | 3 +--
src/qemu/qemu_domain_address.c | 3 +--
tests/Makefile.am | 11 +++++++++--
tests/qemuxml2argvtest.c | 4 ++++
9 files changed, 51 insertions(+), 18 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 205f99618d..80d349fc5a 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -28822,6 +28822,7 @@ static virDomainNetNotifyActualDeviceImpl netNotify;
static virDomainNetReleaseActualDeviceImpl netRelease;
static virDomainNetBandwidthChangeAllowedImpl netBandwidthChangeAllowed;
static virDomainNetBandwidthUpdateImpl netBandwidthUpdate;
+static virDomainNetResolveActualTypeImpl netResolveActualType;
void
@@ -28829,13 +28830,15 @@ virDomainNetSetDeviceImpl(virDomainNetAllocateActualDeviceImpl allocate,
virDomainNetNotifyActualDeviceImpl notify,
virDomainNetReleaseActualDeviceImpl release,
virDomainNetBandwidthChangeAllowedImpl bandwidthChangeAllowed,
- virDomainNetBandwidthUpdateImpl bandwidthUpdate)
+ virDomainNetBandwidthUpdateImpl bandwidthUpdate,
+ virDomainNetResolveActualTypeImpl resolveActualType)
{
netAllocate = allocate;
netNotify = notify;
netRelease = release;
netBandwidthChangeAllowed = bandwidthChangeAllowed;
netBandwidthUpdate = bandwidthUpdate;
+ netResolveActualType = resolveActualType;
}
int
@@ -28903,3 +28906,15 @@ virDomainNetBandwidthUpdate(virDomainNetDefPtr iface,
return netBandwidthUpdate(iface, newBandwidth);
}
+
+int
+virDomainNetResolveActualType(virDomainNetDefPtr iface)
+{
+ if (!netResolveActualType) {
+ virReportError(VIR_ERR_NO_SUPPORT, "%s",
+ _("Network device resolve type not available"));
+ return -1;
+ }
+
+ return netResolveActualType(iface);
+}
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 32948e181c..7a2f434ec8 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -3474,13 +3474,17 @@ typedef int
(*virDomainNetBandwidthUpdateImpl)(virDomainNetDefPtr iface,
virNetDevBandwidthPtr newBandwidth);
+typedef int
+(*virDomainNetResolveActualTypeImpl)(virDomainNetDefPtr iface);
+
void
virDomainNetSetDeviceImpl(virDomainNetAllocateActualDeviceImpl allocate,
virDomainNetNotifyActualDeviceImpl notify,
virDomainNetReleaseActualDeviceImpl release,
virDomainNetBandwidthChangeAllowedImpl bandwidthChangeAllowed,
- virDomainNetBandwidthUpdateImpl bandwidthUpdate);
+ virDomainNetBandwidthUpdateImpl bandwidthUpdate,
+ virDomainNetResolveActualTypeImpl resolveActualType);
int
virDomainNetAllocateActualDevice(virDomainDefPtr dom,
@@ -3507,5 +3511,14 @@ virDomainNetBandwidthUpdate(virDomainNetDefPtr iface,
virNetDevBandwidthPtr newBandwidth)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
+/* XXX this is a nasty hack and should be removed. It should
+ * be by via public API by fetching XML and parsing it. Not
+ * easy right now as code paths in QEMU reying on this don't
+ * have a virConnectPtr handy.
+ */
+int
+virDomainNetResolveActualType(virDomainNetDefPtr iface)
+ ATTRIBUTE_NONNULL(1);
+
#endif /* __DOMAIN_CONF_H */
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 45ae25e57c..f2801a0d73 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -459,6 +459,7 @@ virDomainNetNotifyActualDevice;
virDomainNetReleaseActualDevice;
virDomainNetRemove;
virDomainNetRemoveHostdev;
+virDomainNetResolveActualType;
virDomainNetSetDeviceImpl;
virDomainNetTypeFromString;
virDomainNetTypeSharesHostView;
diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
index 9c0b3c0895..dd6e3402ea 100644
--- a/src/network/bridge_driver.c
+++ b/src/network/bridge_driver.c
@@ -5147,8 +5147,7 @@ networkReleaseActualDevice(virDomainDefPtr dom,
-/* networkGetActualType:
- * @dom: domain definition that @iface belongs to
+/* networkResolveActualType:
* @iface: the original NetDef from the domain
*
* Looks up the network reference by iface, and returns the actual
@@ -5156,8 +5155,8 @@ networkReleaseActualDevice(virDomainDefPtr dom,
*
* Returns 0 on success, -1 on failure.
*/
-int
-networkGetActualType(virDomainNetDefPtr iface)
+static int
+networkResolveActualType(virDomainNetDefPtr iface)
{
virNetworkDriverStatePtr driver = networkGetDriver();
virNetworkObjPtr obj = NULL;
@@ -5718,7 +5717,8 @@ networkRegister(void)
networkNotifyActualDevice,
networkReleaseActualDevice,
networkBandwidthChangeAllowed,
- networkBandwidthUpdate);
+ networkBandwidthUpdate,
+ networkResolveActualType);
return 0;
}
diff --git a/src/network/bridge_driver.h b/src/network/bridge_driver.h
index 6fa6432d13..2cf886a7e6 100644
--- a/src/network/bridge_driver.h
+++ b/src/network/bridge_driver.h
@@ -36,10 +36,6 @@ networkRegister(void);
# if WITH_NETWORK
-int
-networkGetActualType(virDomainNetDefPtr iface)
- ATTRIBUTE_NONNULL(1);
-
int
networkDnsmasqConfContents(virNetworkObjPtr obj,
const char *pidfile,
@@ -49,7 +45,6 @@ networkDnsmasqConfContents(virNetworkObjPtr obj,
# else
/* Define no-op replacements that don't drag in any link dependencies. */
-# define networkGetActualType(iface) (iface->type)
# define networkDnsmasqConfContents(network, pidfile, configstr, \
dctx, caps) 0
diff --git a/src/qemu/qemu_alias.c b/src/qemu/qemu_alias.c
index e8c1256b75..ae30f7df82 100644
--- a/src/qemu/qemu_alias.c
+++ b/src/qemu/qemu_alias.c
@@ -27,7 +27,6 @@
#include "viralloc.h"
#include "virlog.h"
#include "virstring.h"
-#include "network/bridge_driver.h"
#define QEMU_DRIVE_HOST_PREFIX "drive-"
@@ -271,7 +270,7 @@ qemuAssignDeviceNetAlias(virDomainDefPtr def,
* We must use "-1" as the index because the caller doesn't know
* that we're now looking for a unique hostdevN rather than netN
*/
- if (networkGetActualType(net) == VIR_DOMAIN_NET_TYPE_HOSTDEV)
+ if (virDomainNetResolveActualType(net) == VIR_DOMAIN_NET_TYPE_HOSTDEV)
return qemuAssignDeviceHostdevAlias(def, &net->info.alias, -1);
if (idx == -1) {
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index 6272b1e91d..e28119e4b1 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -25,7 +25,6 @@
#include "qemu_domain_address.h"
#include "qemu_domain.h"
-#include "network/bridge_driver.h"
#include "viralloc.h"
#include "virerror.h"
#include "virlog.h"
@@ -1064,7 +1063,7 @@ qemuDomainFillDeviceIsolationGroup(virDomainDefPtr def,
* to is of type hostdev. All other kinds of network interfaces don't
* require us to isolate the guest device, so we can skip them */
if (iface->type != VIR_DOMAIN_NET_TYPE_NETWORK ||
- networkGetActualType(iface) != VIR_DOMAIN_NET_TYPE_HOSTDEV) {
+ virDomainNetResolveActualType(iface) != VIR_DOMAIN_NET_TYPE_HOSTDEV) {
goto skip;
}
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 497bd21a25..d013aed5eb 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -280,7 +280,7 @@ test_libraries += virmocklibxl.la
endif WITH_LIBXL
if WITH_QEMU
-test_programs += qemuxml2argvtest qemuxml2xmltest \
+test_programs += qemuxml2xmltest \
qemuargv2xmltest qemuhelptest domainsnapshotxml2xmltest \
qemumonitortest qemumonitorjsontest qemuhotplugtest \
qemuagenttest qemucapabilitiestest qemucaps2xmltest \
@@ -288,6 +288,11 @@ test_programs += qemuxml2argvtest qemuxml2xmltest \
qemucommandutiltest \
qemublocktest \
$(NULL)
+if WITH_NETWORK
+# Dep on the network driver callback for resolving NIC
+# actual type. XXX remove this dep.
+test_programs += qemuxml2xmltest
+endif WITH_NETWORK
test_helpers += qemucapsprobe
test_libraries += libqemumonitortestutils.la \
libqemutestdriver.la \
@@ -582,7 +587,9 @@ qemucpumock_la_LIBADD = $(MOCKLIBS_LIBS)
qemuxml2argvtest_SOURCES = \
qemuxml2argvtest.c testutilsqemu.c testutilsqemu.h \
testutils.c testutils.h
-qemuxml2argvtest_LDADD = libqemutestdriver.la $(LDADDS) $(LIBXML_LIBS)
+qemuxml2argvtest_LDADD = libqemutestdriver.la \
+ ../src/libvirt_driver_network_impl.la \
+ $(LDADDS) $(LIBXML_LIBS)
qemuxml2argvmock_la_SOURCES = \
qemuxml2argvmock.c
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index c8739909de..b341467143 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -25,6 +25,7 @@
# include "cpu/cpu_map.h"
# include "virstring.h"
# include "storage/storage_driver.h"
+# include "network/bridge_driver.h"
# include "virmock.h"
# define __QEMU_CAPSPRIV_H_ALLOW__
@@ -580,6 +581,9 @@ mymain(void)
if (qemuTestDriverInit(&driver) < 0)
return EXIT_FAILURE;
+ if (networkRegister() < 0)
+ return EXIT_FAILURE;
+
driver.privileged = true;
VIR_FREE(driver.config->defaultTLSx509certdir);
--
2.14.3
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