Imported Upstream version 0.9.10.0 upstream/0.9.10.0

1 files changed, 588 insertions, 0 deletions

diff --git a/src/devices/nm-device-bridge.c b/src/devices/nm-device-bridge.c
new file mode 100644
index 00000000..edc41838
--- /dev/null
+++ b/src/devices/nm-device-bridge.c
@@ -0,0 +1,588 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
+/* NetworkManager -- Network link manager
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Copyright 2011 - 2012 Red Hat, Inc.
+ */
+
+#include "config.h"
+
+#include <glib.h>
+#include <glib/gi18n.h>
+
+#include <netinet/ether.h>
+#include <stdlib.h>
+
+#include "gsystem-local-alloc.h"
+#include "nm-device-bridge.h"
+#include "nm-logging.h"
+#include "nm-utils.h"
+#include "NetworkManagerUtils.h"
+#include "nm-device-private.h"
+#include "nm-dbus-glib-types.h"
+#include "nm-dbus-manager.h"
+#include "nm-enum-types.h"
+#include "nm-platform.h"
+
+#include "nm-device-bridge-glue.h"
+
+
+G_DEFINE_TYPE (NMDeviceBridge, nm_device_bridge, NM_TYPE_DEVICE)
+
+#define NM_DEVICE_BRIDGE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_DEVICE_BRIDGE, NMDeviceBridgePrivate))
+
+#define NM_BRIDGE_ERROR (nm_bridge_error_quark ())
+
+typedef struct {
+	int dummy;
+} NMDeviceBridgePrivate;
+
+enum {
+	PROP_0,
+	PROP_SLAVES,
+
+	LAST_PROP
+};
+
+/******************************************************************/
+
+static GQuark
+nm_bridge_error_quark (void)
+{
+	static GQuark quark = 0;
+	if (!quark)
+		quark = g_quark_from_static_string ("nm-bridge-error");
+	return quark;
+}
+
+/******************************************************************/
+
+static guint32
+get_generic_capabilities (NMDevice *dev)
+{
+	return NM_DEVICE_CAP_CARRIER_DETECT;
+}
+
+static gboolean
+is_available (NMDevice *dev)
+{
+	if (NM_DEVICE_GET_CLASS (dev)->is_up)
+		return NM_DEVICE_GET_CLASS (dev)->is_up (dev);
+	return FALSE;
+}
+
+static gboolean
+check_connection_available (NMDevice *device,
+                            NMConnection *connection,
+                            const char *specific_object)
+{
+	/* Connections are always available because the carrier state is determined
+	 * by the bridge port carrier states, not the bridge's state.
+	 */
+	return TRUE;
+}
+
+static gboolean
+check_connection_compatible (NMDevice *device, NMConnection *connection)
+{
+	const char *iface;
+	NMSettingBridge *s_bridge;
+	const GByteArray *mac_address;
+
+	if (!NM_DEVICE_CLASS (nm_device_bridge_parent_class)->check_connection_compatible (device, connection))
+		return FALSE;
+
+	s_bridge = nm_connection_get_setting_bridge (connection);
+	if (!s_bridge || !nm_connection_is_type (connection, NM_SETTING_BRIDGE_SETTING_NAME))
+		return FALSE;
+
+	/* Bridge connections must specify the virtual interface name */
+	iface = nm_connection_get_virtual_iface_name (connection);
+	if (!iface || strcmp (nm_device_get_iface (device), iface))
+		return FALSE;
+
+	mac_address = nm_setting_bridge_get_mac_address (s_bridge);
+	if (mac_address) {
+		guint hw_len;
+		const guint8 *hw_addr;
+
+		hw_addr = nm_device_get_hw_address (device, &hw_len);
+		if (   !hw_addr
+		    || hw_len != mac_address->len
+		    || memcmp (mac_address->data, hw_addr, hw_len) != 0)
+			return FALSE;
+	}
+
+	return TRUE;
+}
+
+static gboolean
+complete_connection (NMDevice *device,
+                     NMConnection *connection,
+                     const char *specific_object,
+                     const GSList *existing_connections,
+                     GError **error)
+{
+	NMSettingBridge *s_bridge, *tmp;
+	guint32 i = 0;
+	char *name;
+	const GSList *iter;
+	gboolean found;
+
+	nm_utils_complete_generic (connection,
+	                           NM_SETTING_BRIDGE_SETTING_NAME,
+	                           existing_connections,
+	                           _("Bridge connection %d"),
+	                           NULL,
+	                           TRUE);
+
+	s_bridge = nm_connection_get_setting_bridge (connection);
+	if (!s_bridge) {
+		s_bridge = (NMSettingBridge *) nm_setting_bridge_new ();
+		nm_connection_add_setting (connection, NM_SETTING (s_bridge));
+	}
+
+	/* Grab the first name that doesn't exist in either our connections
+	 * or a device on the system.
+	 */
+	while (i < 500 && !nm_setting_bridge_get_interface_name (s_bridge)) {
+		name = g_strdup_printf ("br%u", i);
+		/* check interface names */
+		if (!nm_platform_link_exists (name)) {
+			/* check existing bridge connections */
+			for (iter = existing_connections, found = FALSE; iter; iter = g_slist_next (iter)) {
+				NMConnection *candidate = iter->data;
+
+				tmp = nm_connection_get_setting_bridge (candidate);
+				if (tmp && nm_connection_is_type (candidate, NM_SETTING_BRIDGE_SETTING_NAME)) {
+					if (g_strcmp0 (nm_setting_bridge_get_interface_name (tmp), name) == 0) {
+						found = TRUE;
+						break;
+					}
+				}
+			}
+
+			if (!found)
+				g_object_set (G_OBJECT (s_bridge), NM_SETTING_BRIDGE_INTERFACE_NAME, name, NULL);
+		}
+
+		g_free (name);
+		i++;
+	}
+
+	return TRUE;
+}
+
+/******************************************************************/
+
+typedef struct {
+	const char *name;
+	const char *sysname;
+	gboolean default_if_zero;
+	gboolean user_hz_compensate;
+} Option;
+
+static const Option master_options[] = {
+	{ NM_SETTING_BRIDGE_STP, "stp_state", FALSE, FALSE },
+	{ NM_SETTING_BRIDGE_PRIORITY, "priority", TRUE, FALSE },
+	{ NM_SETTING_BRIDGE_FORWARD_DELAY, "forward_delay", TRUE, TRUE },
+	{ NM_SETTING_BRIDGE_HELLO_TIME, "hello_time", TRUE, TRUE },
+	{ NM_SETTING_BRIDGE_MAX_AGE, "max_age", TRUE, TRUE },
+	{ NM_SETTING_BRIDGE_AGEING_TIME, "ageing_time", TRUE, TRUE },
+	{ NULL, NULL }
+};
+
+static const Option slave_options[] = {
+	{ NM_SETTING_BRIDGE_PORT_PRIORITY, "priority", TRUE, FALSE },
+	{ NM_SETTING_BRIDGE_PORT_PATH_COST, "path_cost", TRUE, FALSE },
+	{ NM_SETTING_BRIDGE_PORT_HAIRPIN_MODE, "hairpin_mode", FALSE, FALSE },
+	{ NULL, NULL }
+};
+
+static void
+commit_option (NMDevice *device, NMSetting *setting, const Option *option, gboolean slave)
+{
+	int ifindex = nm_device_get_ifindex (device);
+	GParamSpec *pspec;
+	GValue val = G_VALUE_INIT;
+	guint32 uval = 0;
+	gs_free char *value = NULL;
+
+	g_assert (setting);
+
+	pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (setting), option->name);
+	g_assert (pspec);
+
+	/* Get the property's value */
+	g_value_init (&val, G_PARAM_SPEC_VALUE_TYPE (pspec));
+	g_object_get_property ((GObject *) setting, option->name, &val);
+	if (G_VALUE_HOLDS_BOOLEAN (&val))
+		uval = g_value_get_boolean (&val) ? 1 : 0;
+	else if (G_VALUE_HOLDS_UINT (&val)) {
+		uval = g_value_get_uint (&val);
+
+		/* zero means "unspecified" for some NM properties but isn't in the
+		 * allowed kernel range, so reset the property to the default value.
+		 */
+		if (option->default_if_zero && uval == 0) {
+			g_value_unset (&val);
+			g_value_init (&val, G_PARAM_SPEC_VALUE_TYPE (pspec));
+			g_param_value_set_default (pspec, &val);
+			uval = g_value_get_uint (&val);
+		}
+
+		/* Linux kernel bridge interfaces use 'centiseconds' for time-based values.
+		 * In reality it's not centiseconds, but depends on HZ and USER_HZ, which
+		 * is almost always works out to be a multiplier of 100, so we can assume
+		 * centiseconds.  See clock_t_to_jiffies().
+		 */
+		if (option->user_hz_compensate)
+			uval *= 100;
+	} else
+		g_assert_not_reached ();
+	g_value_unset (&val);
+
+	value = g_strdup_printf ("%u", uval);
+	if (slave)
+		nm_platform_slave_set_option (ifindex, option->sysname, value);
+	else
+		nm_platform_master_set_option (ifindex, option->sysname, value);
+}
+
+static void
+commit_master_options (NMDevice *device, NMSettingBridge *setting)
+{
+	const Option *option;
+	NMSetting *s = NM_SETTING (setting);
+
+	for (option = master_options; option->name; option++)
+		commit_option (device, s, option, FALSE);
+}
+
+static void
+commit_slave_options (NMDevice *device, NMSettingBridgePort *setting)
+{
+	const Option *option;
+	NMSetting *s, *s_clear = NULL;
+
+	if (setting)
+		s = NM_SETTING (setting);
+	else
+		s = s_clear = nm_setting_bridge_port_new ();
+
+	for (option = slave_options; option->name; option++)
+		commit_option (device, s, option, TRUE);
+
+	g_clear_object (&s_clear);
+}
+
+static void
+update_connection (NMDevice *device, NMConnection *connection)
+{
+	NMSettingBridge *s_bridge = nm_connection_get_setting_bridge (connection);
+	const char *ifname = nm_device_get_iface (device);
+	int ifindex = nm_device_get_ifindex (device);
+	const Option *option;
+
+	if (!s_bridge) {
+		s_bridge = (NMSettingBridge *) nm_setting_bridge_new ();
+		nm_connection_add_setting (connection, (NMSetting *) s_bridge);
+		g_object_set (s_bridge, NM_SETTING_BRIDGE_INTERFACE_NAME, ifname, NULL);
+	}
+
+	for (option = master_options; option->name; option++) {
+		gs_free char *str = nm_platform_master_get_option (ifindex, option->sysname);
+		int value;
+
+		if (str) {
+			value = strtol (str, NULL, 10);
+
+			/* See comments in set_sysfs_uint() about centiseconds. */
+			if (option->user_hz_compensate)
+				value /= 100;
+
+			g_object_set (s_bridge, option->name, value, NULL);
+		} else {
+			nm_log_warn (LOGD_BRIDGE, "(%s): failed to read bridge setting '%s'",
+			             nm_device_get_iface (device), option->sysname);
+		}
+	}
+}
+
+/**
+ * nm_bridge_update_slave_connection:
+ * @slave: the slave #NMDevice, is *not* necessarily a bridge interface
+ * @connection: the #NMConnection to update with the bridge port settings
+ *
+ * Reads bridge port configuration and updates @connection with those
+ * properties.
+ *
+ * Returns: %TRUE if the port configuration was read and @connection updated,
+ * %FALSE if not.
+ */
+gboolean
+nm_bridge_update_slave_connection (NMDevice *slave, NMConnection *connection)
+{
+	NMSettingBridgePort *s_port;
+	int ifindex = nm_device_get_ifindex (slave);
+	const Option *option;
+
+	g_return_val_if_fail (NM_IS_DEVICE (slave), FALSE);
+	g_return_val_if_fail (NM_IS_CONNECTION (connection), FALSE);
+
+	s_port = nm_connection_get_setting_bridge_port (connection);
+	if (!s_port) {
+		s_port = (NMSettingBridgePort *) nm_setting_bridge_port_new ();
+		nm_connection_add_setting (connection, NM_SETTING (s_port));
+	}
+
+	for (option = slave_options; option->name; option++) {
+		gs_free char *str = nm_platform_slave_get_option (ifindex, option->sysname);
+		int value;
+
+		if (str) {
+			value = strtol (str, NULL, 10);
+
+			/* See comments in set_sysfs_uint() about centiseconds. */
+			if (option->user_hz_compensate)
+				value /= 100;
+
+			g_object_set (s_port, option->name, value, NULL);
+		} else {
+			nm_log_warn (LOGD_BRIDGE, "(%s): failed to read bridge port setting '%s'",
+			             nm_device_get_iface (slave), option->sysname);
+		}
+	}
+
+	return TRUE;
+}
+
+static NMActStageReturn
+act_stage1_prepare (NMDevice *device, NMDeviceStateReason *reason)
+{
+	NMActStageReturn ret;
+	NMConnection *connection = nm_device_get_connection (device);
+
+	g_assert (connection);
+
+	ret = NM_DEVICE_CLASS (nm_device_bridge_parent_class)->act_stage1_prepare (device, reason);
+	if (ret != NM_ACT_STAGE_RETURN_SUCCESS)
+		return ret;
+
+	commit_master_options (device, nm_connection_get_setting_bridge (connection));
+
+	return NM_ACT_STAGE_RETURN_SUCCESS;
+}
+
+static gboolean
+enslave_slave (NMDevice *device,
+               NMDevice *slave,
+               NMConnection *connection,
+               gboolean configure)
+{
+	if (configure) {
+		if (!nm_platform_link_enslave (nm_device_get_ip_ifindex (device), nm_device_get_ip_ifindex (slave)))
+			return FALSE;
+
+		commit_slave_options (slave, nm_connection_get_setting_bridge_port (connection));
+
+		nm_log_info (LOGD_BRIDGE, "(%s): attached bridge port %s",
+		             nm_device_get_ip_iface (device),
+		             nm_device_get_ip_iface (slave));
+	} else {
+		nm_log_info (LOGD_BRIDGE, "(%s): bridge port %s was attached",
+		             nm_device_get_ip_iface (device),
+		             nm_device_get_ip_iface (slave));
+	}
+
+	g_object_notify (G_OBJECT (device), NM_DEVICE_BRIDGE_SLAVES);
+
+	return TRUE;
+}
+
+static gboolean
+release_slave (NMDevice *device,
+               NMDevice *slave,
+               gboolean configure)
+{
+	gboolean success = TRUE;
+
+	if (configure) {
+		success = nm_platform_link_release (nm_device_get_ip_ifindex (device),
+		                                    nm_device_get_ip_ifindex (slave));
+
+		if (success) {
+			nm_log_info (LOGD_BRIDGE, "(%s): detached bridge port %s",
+			             nm_device_get_ip_iface (device),
+			             nm_device_get_ip_iface (slave));
+		} else {
+			nm_log_warn (LOGD_BRIDGE, "(%s): failed to detach bridge port %s",
+			             nm_device_get_ip_iface (device),
+			             nm_device_get_ip_iface (slave));
+		}
+	} else {
+		nm_log_info (LOGD_BRIDGE, "(%s): bridge port %s was detached",
+		             nm_device_get_ip_iface (device),
+		             nm_device_get_ip_iface (slave));
+	}
+
+	g_object_notify (G_OBJECT (device), NM_DEVICE_BRIDGE_SLAVES);
+	return success;
+}
+
+/******************************************************************/
+
+NMDevice *
+nm_device_bridge_new (NMPlatformLink *platform_device)
+{
+	g_return_val_if_fail (platform_device != NULL, NULL);
+
+	return (NMDevice *) g_object_new (NM_TYPE_DEVICE_BRIDGE,
+	                                  NM_DEVICE_PLATFORM_DEVICE, platform_device,
+	                                  NM_DEVICE_DRIVER, "bridge",
+	                                  NM_DEVICE_TYPE_DESC, "Bridge",
+	                                  NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_BRIDGE,
+	                                  NM_DEVICE_IS_MASTER, TRUE,
+	                                  NULL);
+}
+
+NMDevice *
+nm_device_bridge_new_for_connection (NMConnection *connection)
+{
+	const char *iface;
+	NMSettingBridge *s_bridge;
+	const GByteArray *mac_address;
+
+	g_return_val_if_fail (connection != NULL, NULL);
+
+	iface = nm_connection_get_virtual_iface_name (connection);
+	g_return_val_if_fail (iface != NULL, NULL);
+
+	s_bridge = nm_connection_get_setting_bridge (connection);
+	g_return_val_if_fail (s_bridge, NULL);
+
+	mac_address = nm_setting_bridge_get_mac_address (s_bridge);
+
+	if (   !nm_platform_bridge_add (iface,
+	                                mac_address ? mac_address->data : NULL,
+	                                mac_address ? mac_address->len : 0)
+	    && nm_platform_get_error () != NM_PLATFORM_ERROR_EXISTS) {
+		nm_log_warn (LOGD_DEVICE | LOGD_BRIDGE, "(%s): failed to create bridge master interface for '%s': %s",
+		             iface, nm_connection_get_id (connection),
+		             nm_platform_get_error_msg ());
+		return NULL;
+	}
+
+	return (NMDevice *) g_object_new (NM_TYPE_DEVICE_BRIDGE,
+	                                  NM_DEVICE_IFACE, iface,
+	                                  NM_DEVICE_DRIVER, "bridge",
+	                                  NM_DEVICE_TYPE_DESC, "Bridge",
+	                                  NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_BRIDGE,
+	                                  NM_DEVICE_IS_MASTER, TRUE,
+	                                  NULL);
+}
+
+static void
+constructed (GObject *object)
+{
+	G_OBJECT_CLASS (nm_device_bridge_parent_class)->constructed (object);
+
+	nm_log_dbg (LOGD_HW | LOGD_BRIDGE, "(%s): kernel ifindex %d",
+	            nm_device_get_iface (NM_DEVICE (object)),
+	            nm_device_get_ifindex (NM_DEVICE (object)));
+}
+
+static void
+nm_device_bridge_init (NMDeviceBridge * self)
+{
+}
+
+static void
+get_property (GObject *object, guint prop_id,
+              GValue *value, GParamSpec *pspec)
+{
+	GPtrArray *slaves;
+	GSList *list, *iter;
+
+	switch (prop_id) {
+		break;
+	case PROP_SLAVES:
+		slaves = g_ptr_array_new ();
+		list = nm_device_master_get_slaves (NM_DEVICE (object));
+		for (iter = list; iter; iter = iter->next)
+			g_ptr_array_add (slaves, g_strdup (nm_device_get_path (NM_DEVICE (iter->data))));
+		g_slist_free (list);
+		g_value_take_boxed (value, slaves);
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+		break;
+	}
+}
+
+static void
+set_property (GObject *object, guint prop_id,
+			  const GValue *value, GParamSpec *pspec)
+{
+	switch (prop_id) {
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+		break;
+	}
+}
+
+static void
+nm_device_bridge_class_init (NMDeviceBridgeClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+	NMDeviceClass *parent_class = NM_DEVICE_CLASS (klass);
+
+	g_type_class_add_private (object_class, sizeof (NMDeviceBridgePrivate));
+
+	parent_class->connection_type = NM_SETTING_BRIDGE_SETTING_NAME;
+
+	/* virtual methods */
+	object_class->constructed = constructed;
+	object_class->get_property = get_property;
+	object_class->set_property = set_property;
+
+	parent_class->get_generic_capabilities = get_generic_capabilities;
+	parent_class->is_available = is_available;
+	parent_class->check_connection_compatible = check_connection_compatible;
+	parent_class->check_connection_available = check_connection_available;
+	parent_class->complete_connection = complete_connection;
+
+	parent_class->update_connection = update_connection;
+
+	parent_class->act_stage1_prepare = act_stage1_prepare;
+	parent_class->enslave_slave = enslave_slave;
+	parent_class->release_slave = release_slave;
+
+	/* properties */
+	g_object_class_install_property
+		(object_class, PROP_SLAVES,
+		 g_param_spec_boxed (NM_DEVICE_BRIDGE_SLAVES,
+		                     "Slaves",
+		                     "Slaves",
+		                     DBUS_TYPE_G_ARRAY_OF_OBJECT_PATH,
+		                     G_PARAM_READABLE));
+
+	nm_dbus_manager_register_exported_type (nm_dbus_manager_get (),
+	                                        G_TYPE_FROM_CLASS (klass),
+	                                        &dbus_glib_nm_device_bridge_object_info);
+
+	dbus_g_error_domain_register (NM_BRIDGE_ERROR, NULL, NM_TYPE_BRIDGE_ERROR);
+}