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ovs: set OVS interfaces as available only after ovs-ready signal

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Don't allow OVS interfaces to connect until the NMOvsdb signals it's
ready. Otherwise, connection attemps can race with the initial OVS
cleanup.
This commit is contained in:
Beniamino Galvani 2021-01-25 14:59:45 +01:00
parent 6d195f7a3f
commit c3cb177b7d
1 changed files with 47 additions and 4 deletions
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51
src/devices/ovs/nm-device-ovs-interface.c
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@ -22,7 +22,8 @@
/*****************************************************************************/
typedef struct {
bool waiting_for_interface : 1;
NMOvsdb *ovsdb;
bool waiting_for_interface : 1;
} NMDeviceOvsInterfacePrivate;
struct _NMDeviceOvsInterface {
@ -70,7 +71,10 @@ get_generic_capabilities(NMDevice *device)
static gboolean
is_available(NMDevice *device, NMDeviceCheckDevAvailableFlags flags)
{
return TRUE;
NMDeviceOvsInterface * self = NM_DEVICE_OVS_INTERFACE(device);
NMDeviceOvsInterfacePrivate *priv = NM_DEVICE_OVS_INTERFACE_GET_PRIVATE(self);
return nm_ovsdb_is_ready(priv->ovsdb);
}
static gboolean
@ -152,6 +156,9 @@ set_platform_mtu_cb(GError *error, gpointer user_data)
static gboolean
set_platform_mtu(NMDevice *device, guint32 mtu)
{
NMDeviceOvsInterface * self = NM_DEVICE_OVS_INTERFACE(device);
NMDeviceOvsInterfacePrivate *priv = NM_DEVICE_OVS_INTERFACE_GET_PRIVATE(self);
/*
* If the MTU is not set in ovsdb, Open vSwitch will change
* the MTU of an internal interface to match the minimum of
@ -162,7 +169,7 @@ set_platform_mtu(NMDevice *device, guint32 mtu)
* it can be stopped during shutdown.
*/
if (_is_internal_interface(device)) {
nm_ovsdb_set_interface_mtu(nm_ovsdb_get(),
nm_ovsdb_set_interface_mtu(priv->ovsdb,
nm_device_get_ip_iface(device),
mtu,
set_platform_mtu_cb,
@ -360,9 +367,42 @@ can_update_from_platform_link(NMDevice *device, const NMPlatformLink *plink)
/*****************************************************************************/
static void
ovsdb_ready(NMOvsdb *ovsdb, NMDeviceOvsInterface *self)
{
NMDevice *device = NM_DEVICE(self);
nm_device_queue_recheck_available(device,
NM_DEVICE_STATE_REASON_NONE,
NM_DEVICE_STATE_REASON_NONE);
nm_device_recheck_available_connections(device);
nm_device_emit_recheck_auto_activate(device);
}
static void
nm_device_ovs_interface_init(NMDeviceOvsInterface *self)
{}
{
NMDeviceOvsInterfacePrivate *priv = NM_DEVICE_OVS_INTERFACE_GET_PRIVATE(self);
priv->ovsdb = g_object_ref(nm_ovsdb_get());
if (!nm_ovsdb_is_ready(priv->ovsdb))
g_signal_connect(priv->ovsdb, NM_OVSDB_READY, G_CALLBACK(ovsdb_ready), self);
}
static void
dispose(GObject *object)
{
NMDeviceOvsInterface * self = NM_DEVICE_OVS_INTERFACE(object);
NMDeviceOvsInterfacePrivate *priv = NM_DEVICE_OVS_INTERFACE_GET_PRIVATE(self);
if (priv->ovsdb) {
g_signal_handlers_disconnect_by_func(priv->ovsdb, G_CALLBACK(ovsdb_ready), self);
g_clear_object(&priv->ovsdb);
}
G_OBJECT_CLASS(nm_device_ovs_interface_parent_class)->dispose(object);
}
static const NMDBusInterfaceInfoExtended interface_info_device_ovs_interface = {
.parent = NM_DEFINE_GDBUS_INTERFACE_INFO_INIT(
@ -374,9 +414,12 @@ static const NMDBusInterfaceInfoExtended interface_info_device_ovs_interface = {
static void
nm_device_ovs_interface_class_init(NMDeviceOvsInterfaceClass *klass)
{
GObjectClass * object_class = G_OBJECT_CLASS(klass);
NMDBusObjectClass *dbus_object_class = NM_DBUS_OBJECT_CLASS(klass);
NMDeviceClass * device_class = NM_DEVICE_CLASS(klass);
object_class->dispose = dispose;
dbus_object_class->interface_infos =
NM_DBUS_INTERFACE_INFOS(&interface_info_device_ovs_interface);