core: fix matching of default metric value for static routes
When NM tries to match a generated connection to a persistent one, it considers also the metric of static routes. However, if the field is set to -1 (use default value for the device) on the persistent connection, the comparison will always fail because the generated connection contains the actual value read from kernel. To fix the issue, modify check_possible_match() to deal correctly with -1 and translate it to the expected value for the current device when performing the comparison. This allows connections with static routes and default metric to properly be re-assumed when NM is restarted. https://bugzilla.redhat.com/show_bug.cgi?id=1302532
This commit is contained in:
Beniamino Galvani
@@ -2305,6 +2305,95 @@ check_ip6_method (NMConnection *orig,
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return allow;
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}
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static int
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route_compare (NMIPRoute *route1, NMIPRoute *route2, gint64 default_metric)
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{
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gint64 r, metric1, metric2;
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r = g_strcmp0 (nm_ip_route_get_dest (route1), nm_ip_route_get_dest (route2));
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if (r)
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return r;
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r = nm_ip_route_get_prefix (route1) - nm_ip_route_get_prefix (route2);
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if (r)
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return r > 0 ? 1 : -1;
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r = g_strcmp0 (nm_ip_route_get_next_hop (route1), nm_ip_route_get_next_hop (route2));
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if (r)
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return r;
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metric1 = nm_ip_route_get_metric (route1) == -1 ? default_metric : nm_ip_route_get_metric (route1);
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metric2 = nm_ip_route_get_metric (route2) == -1 ? default_metric : nm_ip_route_get_metric (route2);
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r = metric1 - metric2;
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if (r)
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return r > 0 ? 1 : -1;
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r = nm_ip_route_get_family (route1) - nm_ip_route_get_family (route2);
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if (r)
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return r > 0 ? 1 : -1;
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return 0;
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}
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static int
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route_ptr_compare (const void *a, const void *b)
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{
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return route_compare (*(NMIPRoute **) a, *(NMIPRoute **) b, -1);
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}
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static gboolean
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check_ip_routes (NMConnection *orig,
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NMConnection *candidate,
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GHashTable *settings,
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gint64 default_metric,
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gboolean v4)
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{
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gs_free NMIPRoute **routes1 = NULL, **routes2 = NULL;
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NMSettingIPConfig *s_ip1, *s_ip2;
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const char *s_name;
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GHashTable *props;
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guint i, num;
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s_name = v4 ? NM_SETTING_IP4_CONFIG_SETTING_NAME :
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NM_SETTING_IP6_CONFIG_SETTING_NAME;
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props = check_property_in_hash (settings,
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s_name,
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NM_SETTING_IP_CONFIG_ROUTES);
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if (!props)
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return TRUE;
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s_ip1 = (NMSettingIPConfig *) nm_connection_get_setting_by_name (orig, s_name);
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s_ip2 = (NMSettingIPConfig *) nm_connection_get_setting_by_name (candidate, s_name);
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if (!s_ip1 || !s_ip2)
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return FALSE;
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num = nm_setting_ip_config_get_num_routes (s_ip1);
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if (num != nm_setting_ip_config_get_num_routes (s_ip2))
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return FALSE;
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routes1 = g_new (NMIPRoute *, num);
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routes2 = g_new (NMIPRoute *, num);
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for (i = 0; i < num; i++) {
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routes1[i] = nm_setting_ip_config_get_route (s_ip1, i);
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routes2[i] = nm_setting_ip_config_get_route (s_ip2, i);
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}
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qsort (routes1, num, sizeof (NMIPRoute *), route_ptr_compare);
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qsort (routes2, num, sizeof (NMIPRoute *), route_ptr_compare);
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for (i = 0; i < num; i++) {
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if (route_compare (routes1[i], routes2[i], default_metric))
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return FALSE;
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}
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remove_from_hash (settings, props, s_name, NM_SETTING_IP_CONFIG_ROUTES);
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return TRUE;
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}
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static gboolean
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check_ip4_method (NMConnection *orig,
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NMConnection *candidate,
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@@ -2488,7 +2577,9 @@ static NMConnection *
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check_possible_match (NMConnection *orig,
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NMConnection *candidate,
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GHashTable *settings,
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gboolean device_has_carrier)
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gboolean device_has_carrier,
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gint64 default_v4_metric,
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gint64 default_v6_metric)
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{
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g_return_val_if_fail (settings != NULL, NULL);
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@@ -2498,6 +2589,12 @@ check_possible_match (NMConnection *orig,
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if (!check_ip4_method (orig, candidate, settings, device_has_carrier))
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return NULL;
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if (!check_ip_routes (orig, candidate, settings, default_v4_metric, TRUE))
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return NULL;
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if (!check_ip_routes (orig, candidate, settings, default_v6_metric, FALSE))
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return NULL;
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if (!check_connection_interface_name (orig, candidate, settings))
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return NULL;
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@@ -2541,6 +2638,8 @@ NMConnection *
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nm_utils_match_connection (GSList *connections,
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NMConnection *original,
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gboolean device_has_carrier,
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gint64 default_v4_metric,
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gint64 default_v6_metric,
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NMUtilsMatchFilterFunc match_filter_func,
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gpointer match_filter_data)
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{
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@@ -2557,8 +2656,10 @@ nm_utils_match_connection (GSList *connections,
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}
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if (!nm_connection_diff (original, candidate, NM_SETTING_COMPARE_FLAG_INFERRABLE, &diffs)) {
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if (!best_match)
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best_match = check_possible_match (original, candidate, diffs, device_has_carrier);
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if (!best_match) {
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best_match = check_possible_match (original, candidate, diffs, device_has_carrier,
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default_v4_metric, default_v6_metric);
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}
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if (!best_match && nm_logging_enabled (LOGL_DEBUG, LOGD_CORE)) {
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GString *diff_string;
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@@ -328,6 +328,8 @@ typedef gboolean (NMUtilsMatchFilterFunc) (NMConnection *connection, gpointer us
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NMConnection *nm_utils_match_connection (GSList *connections,
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NMConnection *original,
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gboolean device_has_carrier,
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gint64 default_v4_metric,
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gint64 default_v6_metric,
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NMUtilsMatchFilterFunc match_filter_func,
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gpointer match_filter_data);
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@@ -1582,6 +1582,8 @@ get_existing_connection (NMManager *manager, NMDevice *device, gboolean *out_gen
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matched = NM_SETTINGS_CONNECTION (nm_utils_match_connection (connections,
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connection,
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nm_device_has_carrier (device),
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nm_device_get_ip4_route_metric (device),
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nm_device_get_ip6_route_metric (device),
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match_connection_filter,
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device));
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if (matched) {
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@@ -205,7 +205,7 @@ test_connection_match_basic (void)
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copy = nm_simple_connection_new_clone (orig);
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connections = g_slist_append (connections, copy);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched == copy);
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/* Now change a material property like IPv4 method and ensure matching fails */
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@@ -214,7 +214,7 @@ test_connection_match_basic (void)
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g_object_set (G_OBJECT (s_ip4),
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NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_LINK_LOCAL,
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NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched == NULL);
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g_slist_free (connections);
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@@ -250,7 +250,7 @@ test_connection_match_ip6_method (void)
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NM_SETTING_IP_CONFIG_MAY_FAIL, TRUE,
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NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched == copy);
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g_slist_free (connections);
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@@ -284,7 +284,7 @@ test_connection_match_ip6_method_ignore (void)
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NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_IGNORE,
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NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched == copy);
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g_slist_free (connections);
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@@ -318,7 +318,7 @@ test_connection_match_ip6_method_ignore_auto (void)
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NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_IGNORE,
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NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched == copy);
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g_slist_free (connections);
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@@ -326,7 +326,6 @@ test_connection_match_ip6_method_ignore_auto (void)
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g_object_unref (copy);
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}
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static void
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test_connection_match_ip4_method (void)
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{
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@@ -355,11 +354,11 @@ test_connection_match_ip4_method (void)
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NM_SETTING_IP_CONFIG_MAY_FAIL, TRUE,
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NULL);
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matched = nm_utils_match_connection (connections, orig, FALSE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, FALSE, 0, 0, NULL, NULL);
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g_assert (matched == copy);
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/* Ensure when carrier=true matching fails */
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched == NULL);
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g_slist_free (connections);
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@@ -393,7 +392,7 @@ test_connection_match_interface_name (void)
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NM_SETTING_CONNECTION_INTERFACE_NAME, NULL,
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NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched == copy);
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g_slist_free (connections);
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@@ -430,7 +429,7 @@ test_connection_match_wired (void)
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NM_SETTING_WIRED_S390_NETTYPE, "qeth",
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NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched == copy);
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g_slist_free (connections);
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@@ -462,7 +461,7 @@ test_connection_match_wired2 (void)
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* the connections match. It can happen if assuming VLAN devices. */
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nm_connection_remove_setting (orig, NM_TYPE_SETTING_WIRED);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched == copy);
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g_slist_free (connections);
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@@ -487,7 +486,7 @@ test_connection_match_cloned_mac (void)
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NM_SETTING_WIRED_CLONED_MAC_ADDRESS, "52:54:00:ab:db:23",
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NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched == fuzzy);
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exact = nm_simple_connection_new_clone (orig);
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@@ -498,14 +497,14 @@ test_connection_match_cloned_mac (void)
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NM_SETTING_WIRED_CLONED_MAC_ADDRESS, "52:54:00:ab:db:23",
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NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched == exact);
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g_object_set (G_OBJECT (s_wired),
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NM_SETTING_WIRED_CLONED_MAC_ADDRESS, "52:54:00:ab:db:24",
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NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched == fuzzy);
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g_slist_free (connections);
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@@ -565,7 +564,7 @@ test_connection_no_match_ip4_addr (void)
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nm_setting_ip_config_add_address (s_ip4, nm_addr);
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nm_ip_address_unref (nm_addr);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched != copy);
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g_slist_free (connections);
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@@ -611,7 +610,7 @@ test_connection_no_match_vlan (void)
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NM_SETTING_VLAN_FLAGS, 0,
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NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched != copy);
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/* Check that the connections do not match if VLAN priorities differ */
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@@ -621,7 +620,7 @@ test_connection_no_match_vlan (void)
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g_object_set (G_OBJECT (s_vlan_copy), NM_SETTING_VLAN_FLAGS, 0, NULL);
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nm_setting_vlan_add_priority_str (s_vlan_copy, NM_VLAN_INGRESS_MAP, "4:2");
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matched = nm_utils_match_connection (connections, orig, TRUE, NULL, NULL);
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matched = nm_utils_match_connection (connections, orig, TRUE, 0, 0, NULL, NULL);
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g_assert (matched != copy);
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g_slist_free (connections);
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@@ -629,6 +628,118 @@ test_connection_no_match_vlan (void)
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g_object_unref (copy);
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}
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static void
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test_connection_match_ip4_routes1 (void)
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{
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gs_unref_object NMConnection *orig = NULL, *copy = NULL;
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NMConnection *matched;
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gs_free_slist GSList *connections = NULL;
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NMSettingIPConfig *s_ip4;
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orig = _match_connection_new ();
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s_ip4 = nm_connection_get_setting_ip4_config (orig);
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g_assert (s_ip4);
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g_object_set (G_OBJECT (s_ip4),
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NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_MANUAL,
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NULL);
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nmtst_setting_ip_config_add_address (s_ip4, "10.0.0.1", 8);
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/* Clone connection */
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copy = nm_simple_connection_new_clone (orig);
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connections = g_slist_append (connections, copy);
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/* Set routes on original connection */
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nmtst_setting_ip_config_add_route (s_ip4, "172.25.16.0", 24, "10.0.0.2", -1);
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nmtst_setting_ip_config_add_route (s_ip4, "172.25.17.0", 24, "10.0.0.3", 20);
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/* Set single route on cloned connection */
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s_ip4 = nm_connection_get_setting_ip4_config (copy);
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g_assert (s_ip4);
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nmtst_setting_ip_config_add_route (s_ip4, "172.25.17.0", 24, "10.0.0.3", 20);
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/* Try to match the connections */
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matched = nm_utils_match_connection (connections, orig, FALSE, 100, 0, NULL, NULL);
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g_assert (matched == NULL);
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}
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static void
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test_connection_match_ip4_routes2 (void)
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{
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gs_unref_object NMConnection *orig = NULL, *copy = NULL;
|
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NMConnection *matched;
|
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gs_free_slist GSList *connections = NULL;
|
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NMSettingIPConfig *s_ip4;
|
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|
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orig = _match_connection_new ();
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|
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s_ip4 = nm_connection_get_setting_ip4_config (orig);
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g_assert (s_ip4);
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g_object_set (G_OBJECT (s_ip4),
|
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NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_MANUAL,
|
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NULL);
|
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|
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nmtst_setting_ip_config_add_address (s_ip4, "10.0.0.1", 8);
|
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|
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/* Clone connection */
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copy = nm_simple_connection_new_clone (orig);
|
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connections = g_slist_append (connections, copy);
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/* Set routes on original connection */
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nmtst_setting_ip_config_add_route (s_ip4, "172.25.16.0", 24, "10.0.0.2", -1);
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nmtst_setting_ip_config_add_route (s_ip4, "172.25.17.0", 24, "10.0.0.3", 20);
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|
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/* Set routes on cloned connection, changing order and using explicit metrics */
|
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s_ip4 = nm_connection_get_setting_ip4_config (copy);
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g_assert (s_ip4);
|
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nmtst_setting_ip_config_add_route (s_ip4, "172.25.17.0", 24, "10.0.0.3", 20);
|
||||
nmtst_setting_ip_config_add_route (s_ip4, "172.25.16.0", 24, "10.0.0.2", 100);
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||||
|
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/* Try to match the connections using different default metrics */
|
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matched = nm_utils_match_connection (connections, orig, FALSE, 100, 0, NULL, NULL);
|
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g_assert (matched == copy);
|
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matched = nm_utils_match_connection (connections, orig, FALSE, 500, 0, NULL, NULL);
|
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g_assert (matched == NULL);
|
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}
|
||||
|
||||
static void
|
||||
test_connection_match_ip6_routes (void)
|
||||
{
|
||||
gs_unref_object NMConnection *orig = NULL, *copy = NULL;
|
||||
NMConnection *matched;
|
||||
gs_free_slist GSList *connections = NULL;
|
||||
NMSettingIPConfig *s_ip6;
|
||||
|
||||
orig = _match_connection_new ();
|
||||
|
||||
s_ip6 = nm_connection_get_setting_ip6_config (orig);
|
||||
g_assert (s_ip6);
|
||||
g_object_set (G_OBJECT (s_ip6),
|
||||
NM_SETTING_IP_CONFIG_METHOD, NM_SETTING_IP6_CONFIG_METHOD_MANUAL,
|
||||
NULL);
|
||||
|
||||
nmtst_setting_ip_config_add_address (s_ip6, "fd01::15", 64);
|
||||
|
||||
/* Clone connection */
|
||||
copy = nm_simple_connection_new_clone (orig);
|
||||
connections = g_slist_append (connections, copy);
|
||||
|
||||
/* Set routes on original connection */
|
||||
nmtst_setting_ip_config_add_route (s_ip6, "2001:db8:a:b:0:0:0:0", 64, "fd01::16", -1);
|
||||
|
||||
/* Set routes on cloned connection */
|
||||
s_ip6 = nm_connection_get_setting_ip6_config (copy);
|
||||
g_assert (s_ip6);
|
||||
nmtst_setting_ip_config_add_route (s_ip6, "2001:db8:a:b:0:0:0:0", 64, "fd01::16", 50);
|
||||
|
||||
/* Try to match the connections */
|
||||
matched = nm_utils_match_connection (connections, orig, FALSE, 0, 100, NULL, NULL);
|
||||
g_assert (matched == NULL);
|
||||
matched = nm_utils_match_connection (connections, orig, FALSE, 0, 50, NULL, NULL);
|
||||
g_assert (matched == copy);
|
||||
}
|
||||
|
||||
static NMConnection *
|
||||
_create_connection_autoconnect (const char *id, gboolean autoconnect, int autoconnect_priority)
|
||||
{
|
||||
@@ -1136,6 +1247,9 @@ main (int argc, char **argv)
|
||||
g_test_add_func ("/general/connection-match/cloned_mac", test_connection_match_cloned_mac);
|
||||
g_test_add_func ("/general/connection-match/no-match-ip4-addr", test_connection_no_match_ip4_addr);
|
||||
g_test_add_func ("/general/connection-match/no-match-vlan", test_connection_no_match_vlan);
|
||||
g_test_add_func ("/general/connection-match/routes/ip4/1", test_connection_match_ip4_routes1);
|
||||
g_test_add_func ("/general/connection-match/routes/ip4/2", test_connection_match_ip4_routes2);
|
||||
g_test_add_func ("/general/connection-match/routes/ip6", test_connection_match_ip6_routes);
|
||||
|
||||
g_test_add_func ("/general/connection-sort/autoconnect-priority", test_connection_sort_autoconnect_priority);
|
||||
|
||||
|
||||
Reference in New Issue
Block a user