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core: don't unmanage devices on shutdown

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... except Wi-Fi and devices that cannot assume connections at all.

https://bugzilla.redhat.com/show_bug.cgi?id=1371126
https://bugzilla.redhat.com/show_bug.cgi?id=1378418
(cherry picked from commit d298b7c96d)
This commit is contained in:
Thomas Haller 2016-10-11 14:42:35 +02:00
parent c53496fe4a
commit b14fe3ce08
1 changed files with 24 additions and 84 deletions
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108
src/devices/nm-device.c
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@ -3492,95 +3492,35 @@ nm_device_can_assume_connections (NMDevice *self)
return !!NM_DEVICE_GET_CLASS (self)->update_connection;
}
/**
* nm_device_can_assume_active_connection:
* @self: #NMDevice instance
*
* This is a convenience function to determine whether the device's active
* connection can be assumed if NetworkManager restarts. This method returns
* %TRUE if and only if the device can assume connections, and the device has
* an active connection, and that active connection can be assumed.
*
* Returns: %TRUE if the device's active connection can be assumed, or %FALSE
* if there is no active connection or the active connection cannot be
* assumed.
*/
static gboolean
nm_device_can_assume_active_connection (NMDevice *self)
{
NMDevicePrivate *priv = NM_DEVICE_GET_PRIVATE (self);
NMConnection *connection;
const char *method;
const char *assumable_ip6_methods[] = {
NM_SETTING_IP6_CONFIG_METHOD_IGNORE,
NM_SETTING_IP6_CONFIG_METHOD_AUTO,
NM_SETTING_IP6_CONFIG_METHOD_DHCP,
NM_SETTING_IP6_CONFIG_METHOD_LINK_LOCAL,
NM_SETTING_IP6_CONFIG_METHOD_MANUAL,
NULL
};
const char *assumable_ip4_methods[] = {
NM_SETTING_IP4_CONFIG_METHOD_DISABLED,
NM_SETTING_IP6_CONFIG_METHOD_AUTO,
NM_SETTING_IP6_CONFIG_METHOD_MANUAL,
NULL
};
if (!nm_device_can_assume_connections (self))
return FALSE;
connection = nm_device_get_applied_connection (self);
if (!connection)
return FALSE;
/* Can't assume connections that aren't yet configured
* FIXME: what about bridges/bonds waiting for slaves?
*/
if (priv->state < NM_DEVICE_STATE_IP_CONFIG)
return FALSE;
if (priv->ip4_state != IP_DONE && priv->ip6_state != IP_DONE)
return FALSE;
method = nm_utils_get_ip_config_method (connection, NM_TYPE_SETTING_IP6_CONFIG);
if (!g_strv_contains (assumable_ip6_methods, method))
return FALSE;
method = nm_utils_get_ip_config_method (connection, NM_TYPE_SETTING_IP4_CONFIG);
if (!g_strv_contains (assumable_ip4_methods, method))
return FALSE;
return TRUE;
}
static gboolean
unmanaged_on_quit (NMDevice *self)
{
/* Leave certain devices alone when quitting so their configuration
* can be taken over when NM restarts. This ensures connectivity while
* NM is stopped.
*/
if (nm_device_uses_assumed_connection (self)) {
/* An assume connection must be left alone */
return FALSE;
NMConnection *connection;
/* NMDeviceWifi overwrites this function to always unmanage wifi devices.
*
* For all other types, if the device type can assume connections, we leave
* it up on quit.
*
* Originally, we would only keep devices up that can be assumed afterwards.
* However, that meant we unmanged layer-2 only devices. So, this was step
* by step refined to unmanage less (commit 25aaaab3, rh#1311988, rh#1333983).
* But there are more scenarios where we also want to keep the device up
* (rh#1378418, rh#1371126). */
if (!nm_device_can_assume_connections (self))
return TRUE;
/* the only exception are IPv4 shared connections. We unmanage them on quit. */
connection = nm_device_get_applied_connection (self);
if (connection) {
if (NM_IN_STRSET (nm_utils_get_ip_config_method (connection, NM_TYPE_SETTING_IP4_CONFIG),
NM_SETTING_IP4_CONFIG_METHOD_SHARED)) {
/* shared connections are to be unmangaed. */
return TRUE;
}
}
if (!nm_device_get_act_request (self)) {
/* a device without any active connection is either UNAVAILABLE or DISCONNECTED
* state. Since we don't know whether the device was upped by NetworkManager,
* we must leave it up on exit.
*/
return FALSE;
}
if (!nm_platform_link_can_assume (NM_PLATFORM_GET, nm_device_get_ifindex (self))) {
/* The device has no layer 3 configuration. Leave it up. */
return FALSE;
}
if (nm_device_can_assume_active_connection (self))
return FALSE;
return TRUE;
return FALSE;
}
gboolean