wake-on-lan: add option to keep existing settings

Add a new 'ignore' option to NMSettingWired.wake-on-lan which disables
management of wake-on-lan by NetworkManager (i.e. the pre-existing
option will not be touched). Also, change the default behavior to be
'ignore' instead of 'disabled'.

https://bugzilla.gnome.org/show_bug.cgi?id=755182
(cherry picked from commit e587dcb16eb045f55f6cba45987be75f83d0c230)

7 files changed, 57 insertions, 25 deletions

diff --git a/clients/cli/settings.c b/clients/cli/settings.c
index 8d2d70be0a..44395c5447 100644
--- a/clients/cli/settings.c
+++ b/clients/cli/settings.c
@@ -1545,7 +1545,10 @@ nmc_property_wired_set_wake_on_lan (NMSetting *setting, const char *prop,
 	gboolean ret;
 	long int t;
 
-	if (nmc_string_to_int_base (val, 0, TRUE, 0, NM_SETTING_WIRED_WAKE_ON_LAN_ALL, &t))
+	if (nmc_string_to_int_base (val, 0, TRUE, 0,
+	                            NM_SETTING_WIRED_WAKE_ON_LAN_ALL
+	                            | NM_SETTING_WIRED_WAKE_ON_LAN_EXCLUSIVE_FLAGS,
+	                            &t))
 		wol = (NMSettingWiredWakeOnLan) t;
 	else {
 		ret = nm_utils_enum_from_str (nm_setting_wired_wake_on_lan_get_type (), val,
@@ -1557,7 +1560,7 @@ nmc_property_wired_set_wake_on_lan (NMSetting *setting, const char *prop,
 			    || g_ascii_strcasecmp (err_token, "disabled") == 0)
 				wol = NM_SETTING_WIRED_WAKE_ON_LAN_NONE;
 			else {
-				g_set_error (error, 1, 0, _("invalid option '%s', use  a combination of [%s] or 'default' or 'none'"),
+				g_set_error (error, 1, 0, _("invalid option '%s', use  a combination of [%s] or 'ignore', 'default' or 'none'"),
 				             err_token,
 				             nm_utils_enum_to_str (nm_setting_wired_wake_on_lan_get_type (),
 				                                   NM_SETTING_WIRED_WAKE_ON_LAN_ALL));
@@ -1566,9 +1569,9 @@ nmc_property_wired_set_wake_on_lan (NMSetting *setting, const char *prop,
 		}
 	}
 
-	if (NM_FLAGS_HAS (wol, NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT) &&
-		NM_FLAGS_ANY (wol, NM_SETTING_WIRED_WAKE_ON_LAN_ALL)) {
-		g_set_error_literal (error, 1, 0, _("'default' is incompatible with other flags"));
+	if (   NM_FLAGS_ANY (wol, NM_SETTING_WIRED_WAKE_ON_LAN_EXCLUSIVE_FLAGS)
+	    && !nm_utils_is_power_of_two (wol)) {
+		g_set_error_literal (error, 1, 0, _("'default' and 'ignore' are incompatible with other flags"));
 		return FALSE;
 	}
 
diff --git a/libnm-core/nm-setting-wired.c b/libnm-core/nm-setting-wired.c
index 3d0c5b6464..c38b187488 100644
--- a/libnm-core/nm-setting-wired.c
+++ b/libnm-core/nm-setting-wired.c
@@ -696,12 +696,12 @@ verify (NMSetting *setting, NMConnection *connection, GError **error)
 		return FALSE;
 	}
 
-	if (   NM_FLAGS_HAS (priv->wol, NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT)
-	    && NM_FLAGS_ANY (priv->wol, NM_SETTING_WIRED_WAKE_ON_LAN_ALL)) {
+	if (   NM_FLAGS_ANY (priv->wol, NM_SETTING_WIRED_WAKE_ON_LAN_EXCLUSIVE_FLAGS)
+	    && !nm_utils_is_power_of_two (priv->wol)) {
 		g_set_error_literal (error,
 		                     NM_CONNECTION_ERROR,
 		                     NM_CONNECTION_ERROR_INVALID_PROPERTY,
-		                     _("Wake-on-LAN mode 'default' is incompatible with other flags"));
+		                     _("Wake-on-LAN mode 'default' and 'ignore' are exclusive flags"));
 		g_prefix_error (error, "%s.%s: ", NM_SETTING_WIRED_SETTING_NAME, NM_SETTING_WIRED_WAKE_ON_LAN);
 		return FALSE;
 	}
@@ -1190,7 +1190,10 @@ nm_setting_wired_class_init (NMSettingWiredClass *setting_class)
 	 * May be any combination of %NM_SETTING_WIRED_WAKE_ON_LAN_PHY,
 	 * %NM_SETTING_WIRED_WAKE_ON_LAN_UNICAST, %NM_SETTING_WIRED_WAKE_ON_LAN_MULTICAST,
 	 * %NM_SETTING_WIRED_WAKE_ON_LAN_BROADCAST, %NM_SETTING_WIRED_WAKE_ON_LAN_ARP,
-	 * %NM_SETTING_WIRED_WAKE_ON_LAN_MAGIC.
+	 * %NM_SETTING_WIRED_WAKE_ON_LAN_MAGIC or the special values
+	 * %NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT (to use global settings) and
+	 * %NM_SETTING_WIRED_WAKE_ON_LAN_IGNORE (to disable management of Wake-on-LAN in
+	 * NetworkManager).
 	 *
 	 * Since: 1.0.6
 	 **/
diff --git a/libnm-core/nm-setting-wired.h b/libnm-core/nm-setting-wired.h
index 44b7c4d023..e1fd6f6725 100644
--- a/libnm-core/nm-setting-wired.h
+++ b/libnm-core/nm-setting-wired.h
@@ -43,14 +43,19 @@ G_BEGIN_DECLS
 /**
  * NMSettingWiredWakeOnLan:
  * @NM_SETTING_WIRED_WAKE_ON_LAN_NONE: Wake-on-LAN disabled
- * @NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT: Use the default value
  * @NM_SETTING_WIRED_WAKE_ON_LAN_PHY: Wake on PHY activity
  * @NM_SETTING_WIRED_WAKE_ON_LAN_UNICAST: Wake on unicast messages
  * @NM_SETTING_WIRED_WAKE_ON_LAN_MULTICAST: Wake on multicast messages
  * @NM_SETTING_WIRED_WAKE_ON_LAN_BROADCAST: Wake on broadcast messages
  * @NM_SETTING_WIRED_WAKE_ON_LAN_ARP: Wake on ARP
  * @NM_SETTING_WIRED_WAKE_ON_LAN_MAGIC: Wake on magic packet
- * @NM_SETTING_WIRED_WAKE_ON_LAN_ALL: Wake on all events
+ * @NM_SETTING_WIRED_WAKE_ON_LAN_ALL: Wake on all events. This does not
+ *   include the exclusive flags @NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT or
+ *   @NM_SETTING_WIRED_WAKE_ON_LAN_IGNORE.
+ * @NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT: Use the default value
+ * @NM_SETTING_WIRED_WAKE_ON_LAN_IGNORE: Don't change configured settings
+ * @NM_SETTING_WIRED_WAKE_ON_LAN_EXCLUSIVE_FLAGS: Mask of flags that are
+ *   incompatible with other flags
  *
  * Options for #NMSettingWired:wake-on-lan. Note that not all options
  * are supported by all devices.
@@ -59,15 +64,19 @@ G_BEGIN_DECLS
  */
 typedef enum { /*< flags >*/
 	NM_SETTING_WIRED_WAKE_ON_LAN_NONE      = 0, /*< skip >*/
-	NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT   = (1 << 0),
 	NM_SETTING_WIRED_WAKE_ON_LAN_PHY       = (1 << 1),
 	NM_SETTING_WIRED_WAKE_ON_LAN_UNICAST   = (1 << 2),
 	NM_SETTING_WIRED_WAKE_ON_LAN_MULTICAST = (1 << 3),
 	NM_SETTING_WIRED_WAKE_ON_LAN_BROADCAST = (1 << 4),
 	NM_SETTING_WIRED_WAKE_ON_LAN_ARP       = (1 << 5),
 	NM_SETTING_WIRED_WAKE_ON_LAN_MAGIC     = (1 << 6),
-	_NM_SETTING_WIRED_WAKE_ON_LAN_LAST,    /*< skip >*/
-	NM_SETTING_WIRED_WAKE_ON_LAN_ALL       = (((_NM_SETTING_WIRED_WAKE_ON_LAN_LAST - 1) << 1) - 1 - NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT) /*< skip >*/
+
+	_NM_SETTING_WIRED_WAKE_ON_LAN_LAST_OPT, /*< skip >*/
+	NM_SETTING_WIRED_WAKE_ON_LAN_ALL       = (((_NM_SETTING_WIRED_WAKE_ON_LAN_LAST_OPT - 1) << 1) - 1) - (1 << 0 /*DEFAULT*/), /*< skip >*/
+
+	NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT   = (1 << 0),
+	NM_SETTING_WIRED_WAKE_ON_LAN_IGNORE    = (1 << 15),
+	NM_SETTING_WIRED_WAKE_ON_LAN_EXCLUSIVE_FLAGS = NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT | NM_SETTING_WIRED_WAKE_ON_LAN_IGNORE, /*< skip >*/
 } NMSettingWiredWakeOnLan;
 
 #define NM_SETTING_WIRED_PORT "port"
diff --git a/src/devices/nm-device-ethernet.c b/src/devices/nm-device-ethernet.c
index bd7554152d..8a02384328 100644
--- a/src/devices/nm-device-ethernet.c
+++ b/src/devices/nm-device-ethernet.c
@@ -1198,15 +1198,22 @@ wake_on_lan_enable (NMDevice *device)
 	value = nm_config_data_get_connection_default (NM_CONFIG_GET_DATA,
 	                                               "ethernet.wake-on-lan",
 	                                               device);
+
 	if (value) {
 		wol = _nm_utils_ascii_str_to_int64 (value, 10,
 		                                    NM_SETTING_WIRED_WAKE_ON_LAN_NONE,
-		                                    NM_SETTING_WIRED_WAKE_ON_LAN_ALL,
+		                                    G_MAXINT32,
 		                                    NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT);
+
+		if (   NM_FLAGS_ANY (wol, NM_SETTING_WIRED_WAKE_ON_LAN_EXCLUSIVE_FLAGS)
+		    && !nm_utils_is_power_of_two (wol)) {
+			nm_log_dbg (LOGD_ETHER, "invalid default value %u for wake-on-lan", (guint) wol);
+			wol = NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT;
+		}
 		if (wol != NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT)
 			goto found;
 	}
-	wol = NM_SETTING_WIRED_WAKE_ON_LAN_NONE;
+	wol = NM_SETTING_WIRED_WAKE_ON_LAN_IGNORE;
 found:
 	return nmp_utils_ethtool_set_wake_on_lan (nm_device_get_iface (device), wol, password);
 }
diff --git a/src/platform/nm-platform-utils.c b/src/platform/nm-platform-utils.c
index 051a873efe..e9b8d4be87 100644
--- a/src/platform/nm-platform-utils.c
+++ b/src/platform/nm-platform-utils.c
@@ -279,6 +279,9 @@ nmp_utils_ethtool_set_wake_on_lan (const char *ifname,
 {
 	struct ethtool_wolinfo wol_info = { };
 
+	if (wol == NM_SETTING_WIRED_WAKE_ON_LAN_IGNORE)
+		return TRUE;
+
 	nm_log_dbg (LOGD_PLATFORM, "setting Wake-on-LAN options 0x%x, password '%s'",
 	            (unsigned int) wol, wol_password);
 
diff --git a/src/settings/plugins/ifcfg-rh/reader.c b/src/settings/plugins/ifcfg-rh/reader.c
index 8502ef49d6..41c182d221 100644
--- a/src/settings/plugins/ifcfg-rh/reader.c
+++ b/src/settings/plugins/ifcfg-rh/reader.c
@@ -3509,18 +3509,23 @@ wireless_connection_from_ifcfg (const char *file,
 static void
 parse_ethtool_options (shvarFile *ifcfg, NMSettingWired *s_wired, char *value)
 {
-	NMSettingWiredWakeOnLan wol_flags = NM_SETTING_WIRED_WAKE_ON_LAN_NONE;
+	NMSettingWiredWakeOnLan wol_flags = NM_SETTING_WIRED_WAKE_ON_LAN_IGNORE;
 	gboolean use_password = FALSE;
-	char **words, **iter, *flag;
+	char **words = NULL, **iter = NULL, *flag;
 
-	if (!value || !value[0])
+	if (!value)
 		return;
 
-	words = g_strsplit_set (value, " ", 0);
-	iter = words;
+	if (value[0]) {
+		words = g_strsplit_set (value, " ", 0);
+		iter = words;
+	}
 
-	while (iter[0]) {
+	while (iter && iter[0]) {
 		if (g_str_equal (iter[0], "wol") && iter[1] && *iter[1]) {
+
+			wol_flags = NM_SETTING_WIRED_WAKE_ON_LAN_NONE;
+
 			for (flag = iter[1]; *flag; flag++) {
 				switch (*flag) {
 				case 'p':
@@ -3556,7 +3561,6 @@ parse_ethtool_options (shvarFile *ifcfg, NMSettingWired *s_wired, char *value)
 			if (!NM_FLAGS_HAS (wol_flags, NM_SETTING_WIRED_WAKE_ON_LAN_MAGIC))
 				use_password = FALSE;
 
-			g_object_set (s_wired, NM_SETTING_WIRED_WAKE_ON_LAN, wol_flags, NULL);
 			iter += 2;
 			continue;
 		}
@@ -3577,6 +3581,7 @@ parse_ethtool_options (shvarFile *ifcfg, NMSettingWired *s_wired, char *value)
 		iter++;
 	}
 
+	g_object_set (s_wired, NM_SETTING_WIRED_WAKE_ON_LAN, wol_flags, NULL);
 	g_strfreev (words);
 }
 
@@ -3715,7 +3720,7 @@ make_wired_setting (shvarFile *ifcfg,
 		g_free (value);
 	}
 
-	value = svGetValue (ifcfg, "ETHTOOL_OPTS", FALSE);
+	value = svGetValueFull (ifcfg, "ETHTOOL_OPTS", FALSE);
 	parse_ethtool_options (ifcfg, s_wired, value);
 	g_free (value);
 
diff --git a/src/settings/plugins/ifcfg-rh/writer.c b/src/settings/plugins/ifcfg-rh/writer.c
index 6289a930c7..ede1e66a7f 100644
--- a/src/settings/plugins/ifcfg-rh/writer.c
+++ b/src/settings/plugins/ifcfg-rh/writer.c
@@ -1137,7 +1137,9 @@ write_wired_setting (NMConnection *connection, shvarFile *ifcfg, GError **error)
 
 	wol = nm_setting_wired_get_wake_on_lan (s_wired);
 	wol_password = nm_setting_wired_get_wake_on_lan_password (s_wired);
-	if (wol == NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT)
+	if (wol == NM_SETTING_WIRED_WAKE_ON_LAN_IGNORE)
+		svSetValueFull (ifcfg, "ETHTOOL_OPTS", "", FALSE);
+	else if (wol == NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT)
 		svSetValue (ifcfg, "ETHTOOL_OPTS", NULL, FALSE);
 	else {
 		str = g_string_sized_new (30);