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macvlan: update MTU according to parent's one

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This commit is contained in:
Beniamino Galvani 2019-09-13 11:40:51 +02:00
parent 438a0a9ad5
commit 4875745bc0
1 changed files with 29 additions and 1 deletions
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30
src/devices/nm-device-macvlan.c
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@ -34,6 +34,7 @@ NM_GOBJECT_PROPERTIES_DEFINE (NMDeviceMacvlan,
typedef struct {
gulong parent_state_id;
gulong parent_mtu_id;
NMPlatformLnkMacvlan props;
} NMDeviceMacvlanPrivate;
@ -120,6 +121,17 @@ parent_state_changed (NMDevice *parent,
nm_device_set_unmanaged_by_flags (NM_DEVICE (self), NM_UNMANAGED_PARENT, !nm_device_get_managed (parent, FALSE), reason);
}
static void
parent_mtu_maybe_changed (NMDevice *parent,
GParamSpec *pspec,
gpointer user_data)
{
/* the MTU of a macvlan/macvtap device is limited by the parent's MTU.
*
* When the parent's MTU changes, try to re-set the MTU. */
nm_device_commit_mtu (user_data);
}
static void
parent_changed_notify (NMDevice *device,
int old_ifindex,
@ -136,12 +148,15 @@ parent_changed_notify (NMDevice *device,
* because NMDevice's dispose() will unset the parent, which in turn calls
* parent_changed_notify(). */
nm_clear_g_signal_handler (old_parent, &priv->parent_state_id);
nm_clear_g_signal_handler (old_parent, &priv->parent_mtu_id);
if (new_parent) {
priv->parent_state_id = g_signal_connect (new_parent,
NM_DEVICE_STATE_CHANGED,
G_CALLBACK (parent_state_changed),
device);
priv->parent_mtu_id = g_signal_connect (new_parent, "notify::" NM_DEVICE_MTU,
G_CALLBACK (parent_mtu_maybe_changed), device);
/* Set parent-dependent unmanaged flag */
nm_device_set_unmanaged_by_flags (device,
@ -447,6 +462,17 @@ nm_device_macvlan_init (NMDeviceMacvlan *self)
{
}
static void
dispose (GObject *object)
{
NMDeviceMacvlanPrivate *priv = NM_DEVICE_MACVLAN_GET_PRIVATE (object);
G_OBJECT_CLASS (nm_device_macvlan_parent_class)->dispose (object);
nm_assert (priv->parent_state_id == 0);
nm_assert (priv->parent_mtu_id == 0);
}
static const NMDBusInterfaceInfoExtended interface_info_device_macvlan = {
.parent = NM_DEFINE_GDBUS_INTERFACE_INFO_INIT (
NM_DBUS_INTERFACE_DEVICE_MACVLAN,
@ -470,6 +496,7 @@ nm_device_macvlan_class_init (NMDeviceMacvlanClass *klass)
NMDBusObjectClass *dbus_object_class = NM_DBUS_OBJECT_CLASS (klass);
NMDeviceClass *device_class = NM_DEVICE_CLASS (klass);
object_class->dispose = dispose;
object_class->get_property = get_property;
object_class->set_property = set_property;
@ -478,13 +505,14 @@ nm_device_macvlan_class_init (NMDeviceMacvlanClass *klass)
device_class->connection_type_supported = NM_SETTING_MACVLAN_SETTING_NAME;
device_class->connection_type_check_compatible = NM_SETTING_MACVLAN_SETTING_NAME;
device_class->link_types = NM_DEVICE_DEFINE_LINK_TYPES (NM_LINK_TYPE_MACVLAN, NM_LINK_TYPE_MACVTAP);
device_class->mtu_parent_delta = 0;
device_class->act_stage1_prepare_set_hwaddr_ethernet = TRUE;
device_class->check_connection_compatible = check_connection_compatible;
device_class->complete_connection = complete_connection;
device_class->create_and_realize = create_and_realize;
device_class->get_generic_capabilities = get_generic_capabilities;
device_class->get_configured_mtu = nm_device_get_configured_mtu_for_wired;
device_class->get_configured_mtu = nm_device_get_configured_mtu_wired_parent;
device_class->is_available = is_available;
device_class->link_changed = link_changed;
device_class->parent_changed_notify = parent_changed_notify;