/* -*- 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 #include #include #include #include #include "nm-device-vlan.h" #include "nm-logging.h" #include "nm-utils.h" #include "NetworkManagerUtils.h" #include "nm-device-private.h" #include "nm-enum-types.h" #include "nm-dbus-manager.h" #include "nm-platform.h" #include "nm-device-vlan-glue.h" G_DEFINE_TYPE (NMDeviceVlan, nm_device_vlan, NM_TYPE_DEVICE) #define NM_DEVICE_VLAN_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_DEVICE_VLAN, NMDeviceVlanPrivate)) #define NM_VLAN_ERROR (nm_vlan_error_quark ()) typedef struct { gboolean disposed; gboolean invalid; NMDevice *parent; guint parent_state_id; guint vlan_id; } NMDeviceVlanPrivate; enum { PROP_0, PROP_PARENT, PROP_VLAN_ID, LAST_PROP }; /******************************************************************/ static GQuark nm_vlan_error_quark (void) { static GQuark quark = 0; if (!quark) quark = g_quark_from_static_string ("nm-vlan-error"); return quark; } /******************************************************************/ static guint32 get_generic_capabilities (NMDevice *dev) { /* We assume VLAN interfaces always support carrier detect */ return NM_DEVICE_CAP_CARRIER_DETECT; } static gboolean bring_up (NMDevice *dev, gboolean *no_firmware) { gboolean success = FALSE; guint i = 20; while (i-- > 0 && !success) { success = NM_DEVICE_CLASS (nm_device_vlan_parent_class)->bring_up (dev, no_firmware); g_usleep (50); } return success; } /******************************************************************/ static gboolean match_parent (NMDeviceVlan *self, const char *parent, GError **error) { NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE (self); g_return_val_if_fail (parent != NULL, FALSE); if (nm_utils_is_uuid (parent)) { NMActRequest *parent_req; NMConnection *parent_connection; /* If the parent is a UUID, the connection matches if our parent * device has that connection activated. */ parent_req = nm_device_get_act_request (priv->parent); if (!parent_req) { g_set_error_literal (error, NM_VLAN_ERROR, NM_VLAN_ERROR_CONNECTION_INVALID, "Parent interface not active; could not match UUID"); return FALSE; } parent_connection = nm_active_connection_get_connection (NM_ACTIVE_CONNECTION (parent_req)); if (!parent_connection) { g_set_error_literal (error, NM_VLAN_ERROR, NM_VLAN_ERROR_CONNECTION_INVALID, "Parent interface had no connection; could not match UUID"); return FALSE; } if (g_strcmp0 (parent, nm_connection_get_uuid (parent_connection)) != 0) { g_set_error_literal (error, NM_VLAN_ERROR, NM_VLAN_ERROR_CONNECTION_INVALID, "Parent interface UUID did not match connection UUID"); return FALSE; } } else { /* interface name */ if (g_strcmp0 (parent, nm_device_get_ip_iface (priv->parent)) != 0) { g_set_error_literal (error, NM_VLAN_ERROR, NM_VLAN_ERROR_CONNECTION_INVALID, "Parent interface name did not match connection"); return FALSE; } } return TRUE; } static gboolean match_hwaddr (NMDevice *device, NMConnection *connection, gboolean fail_if_no_hwaddr) { NMSettingWired *s_wired; const GByteArray *mac; const guint8 *device_mac; guint device_mac_len; s_wired = nm_connection_get_setting_wired (connection); if (!s_wired) return !fail_if_no_hwaddr; mac = nm_setting_wired_get_mac_address (s_wired); if (!mac) return !fail_if_no_hwaddr; device_mac = nm_device_get_hw_address (device, &device_mac_len); return ( mac->len == device_mac_len && memcmp (mac->data, device_mac, device_mac_len) == 0); } static gboolean check_connection_compatible (NMDevice *device, NMConnection *connection, GError **error) { NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE (device); NMSettingVlan *s_vlan; const char *parent, *iface = NULL; if (!NM_DEVICE_CLASS (nm_device_vlan_parent_class)->check_connection_compatible (device, connection, error)) return FALSE; s_vlan = nm_connection_get_setting_vlan (connection); if (!s_vlan) { g_set_error (error, NM_VLAN_ERROR, NM_VLAN_ERROR_CONNECTION_INVALID, "The connection was not a VLAN connection."); return FALSE; } if (nm_setting_vlan_get_id (s_vlan) != priv->vlan_id) { g_set_error (error, NM_VLAN_ERROR, NM_VLAN_ERROR_CONNECTION_INVALID, "The connection's VLAN ID did not match the device's VLAN ID."); return FALSE; } /* Check parent interface; could be an interface name or a UUID */ parent = nm_setting_vlan_get_parent (s_vlan); if (parent) { if (!match_parent (NM_DEVICE_VLAN (device), parent, error)) return FALSE; } else { /* Parent could be a MAC address in an NMSettingWired */ if (!match_hwaddr (device, connection, TRUE)) { g_set_error (error, NM_VLAN_ERROR, NM_VLAN_ERROR_CONNECTION_INVALID, "Failed to match the VLAN parent interface via hardware address."); return FALSE; } } /* Ensure the interface name matches. If not specified we assume a match * since both the parent interface and the VLAN ID matched by the time we * get here. */ iface = nm_connection_get_virtual_iface_name (connection); if (iface) { if (g_strcmp0 (nm_device_get_ip_iface (device), iface) != 0) { g_set_error (error, NM_VLAN_ERROR, NM_VLAN_ERROR_CONNECTION_INVALID, "The VLAN connection virtual interface name did not match."); return FALSE; } } return TRUE; } static gboolean complete_connection (NMDevice *device, NMConnection *connection, const char *specific_object, const GSList *existing_connections, GError **error) { NMSettingVlan *s_vlan; nm_utils_complete_generic (connection, NM_SETTING_VLAN_SETTING_NAME, existing_connections, _("VLAN connection %d"), NULL, TRUE); s_vlan = nm_connection_get_setting_vlan (connection); if (!s_vlan) { g_set_error_literal (error, NM_VLAN_ERROR, NM_VLAN_ERROR_CONNECTION_INVALID, "A 'vlan' setting is required."); return FALSE; } /* If there's no VLAN interface, no parent, and no hardware address in the * settings, then there's not enough information to complete the setting. */ if ( !nm_setting_vlan_get_parent (s_vlan) && !match_hwaddr (device, connection, TRUE)) { g_set_error_literal (error, NM_VLAN_ERROR, NM_VLAN_ERROR_CONNECTION_INVALID, "The 'vlan' setting had no interface name, parent, or hardware address."); return FALSE; } return TRUE; } static gboolean match_l2_config (NMDevice *device, NMConnection *connection) { NMSettingVlan *s_vlan; gboolean fail_if_no_hwaddr = FALSE; s_vlan = nm_connection_get_setting_vlan (connection); g_assert (s_vlan); if ( !nm_setting_vlan_get_parent (s_vlan) && !nm_setting_vlan_get_interface_name (s_vlan)) { /* If there's no parent and no interface name given, then the only way * we have to identify the VLAN interface the connection matches is * a hardware-specific setting's hardware address property, so we want * to fail the match below if we there is none. */ fail_if_no_hwaddr = TRUE; } /* MAC address check; we ask the parent to check our own MAC address, * because only the parent knows what kind of NMSetting the MAC * address will be in. The VLAN device shouldn't have to know what kind * of interface the parent is. */ if (!match_hwaddr (device, connection, fail_if_no_hwaddr)) return FALSE; /* FIXME: any more L2 checks? */ return TRUE; } static NMActStageReturn act_stage1_prepare (NMDevice *dev, NMDeviceStateReason *reason) { NMActRequest *req; NMConnection *connection; NMSettingVlan *s_vlan; NMActStageReturn ret; g_return_val_if_fail (reason != NULL, NM_ACT_STAGE_RETURN_FAILURE); ret = NM_DEVICE_CLASS (nm_device_vlan_parent_class)->act_stage1_prepare (dev, reason); if (ret != NM_ACT_STAGE_RETURN_SUCCESS) return ret; req = nm_device_get_act_request (dev); g_return_val_if_fail (req != NULL, NM_ACT_STAGE_RETURN_FAILURE); connection = nm_act_request_get_connection (req); g_return_val_if_fail (connection != NULL, NM_ACT_STAGE_RETURN_FAILURE); s_vlan = nm_connection_get_setting_vlan (connection); if (s_vlan) { int ifindex = nm_device_get_ifindex (dev); int num, i; guint32 from, to; num = nm_setting_vlan_get_num_priorities (s_vlan, NM_VLAN_INGRESS_MAP); for (i = 0; i < num; i++) { if (nm_setting_vlan_get_priority (s_vlan, NM_VLAN_INGRESS_MAP, i, &from, &to)) nm_platform_vlan_set_ingress_map (ifindex, from, to); } num = nm_setting_vlan_get_num_priorities (s_vlan, NM_VLAN_EGRESS_MAP); for (i = 0; i < num; i++) { if (nm_setting_vlan_get_priority (s_vlan, NM_VLAN_EGRESS_MAP, i, &from, &to)) nm_platform_vlan_set_egress_map (ifindex, from, to); } } return ret; } /******************************************************************/ static void parent_state_changed (NMDevice *parent, NMDeviceState new_state, NMDeviceState old_state, NMDeviceStateReason reason, gpointer user_data) { NMDeviceVlan *self = NM_DEVICE_VLAN (user_data); /* We'll react to our own carrier state notifications. Ignore the parent's. */ if (reason == NM_DEVICE_STATE_REASON_CARRIER) return; if (new_state < NM_DEVICE_STATE_DISCONNECTED) { /* If the parent becomes unavailable or unmanaged so does the VLAN */ nm_device_state_changed (NM_DEVICE (self), new_state, reason); } else if ( new_state == NM_DEVICE_STATE_DISCONNECTED && old_state < NM_DEVICE_STATE_DISCONNECTED) { /* Mark VLAN interface as available/disconnected when the parent * becomes available as a result of becoming initialized. */ nm_device_state_changed (NM_DEVICE (self), new_state, reason); } } /******************************************************************/ NMDevice * nm_device_vlan_new (NMPlatformLink *platform_device, NMDevice *parent) { NMDevice *device; g_return_val_if_fail (platform_device != NULL, NULL); g_return_val_if_fail (NM_IS_DEVICE (parent), NULL); device = (NMDevice *) g_object_new (NM_TYPE_DEVICE_VLAN, NM_DEVICE_PLATFORM_DEVICE, platform_device, NM_DEVICE_VLAN_PARENT, parent, NM_DEVICE_DRIVER, "8021q", NM_DEVICE_TYPE_DESC, "VLAN", NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_VLAN, NULL); if (NM_DEVICE_VLAN_GET_PRIVATE (device)->invalid) { g_object_unref (device); device = NULL; } return device; } NMDevice * nm_device_vlan_new_for_connection (NMConnection *connection, NMDevice *parent) { NMDevice *device; NMSettingVlan *s_vlan; char *iface; g_return_val_if_fail (connection != NULL, NULL); g_return_val_if_fail (NM_IS_DEVICE (parent), NULL); s_vlan = nm_connection_get_setting_vlan (connection); g_return_val_if_fail (s_vlan != NULL, NULL); iface = g_strdup (nm_connection_get_virtual_iface_name (connection)); if (!iface) { iface = nm_utils_new_vlan_name (nm_device_get_ip_iface (parent), nm_setting_vlan_get_id (s_vlan)); } if ( !nm_platform_vlan_add (iface, nm_device_get_ifindex (parent), nm_setting_vlan_get_id (s_vlan), nm_setting_vlan_get_flags (s_vlan)) && nm_platform_get_error () != NM_PLATFORM_ERROR_EXISTS) { nm_log_warn (LOGD_DEVICE | LOGD_VLAN, "(%s): failed to add VLAN interface for '%s'", iface, nm_connection_get_id (connection)); g_free (iface); return NULL; } device = (NMDevice *) g_object_new (NM_TYPE_DEVICE_VLAN, NM_DEVICE_IFACE, iface, NM_DEVICE_VLAN_PARENT, parent, NM_DEVICE_DRIVER, "8021q", NM_DEVICE_TYPE_DESC, "VLAN", NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_VLAN, NULL); g_free (iface); if (NM_DEVICE_VLAN_GET_PRIVATE (device)->invalid) { g_object_unref (device); device = NULL; } return device; } static void nm_device_vlan_init (NMDeviceVlan * self) { } static void constructed (GObject *object) { NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE (object); NMDevice *device = NM_DEVICE (object); const char *iface = nm_device_get_iface (device); int ifindex = nm_device_get_ifindex (device); int parent_ifindex = -1, itype; int vlan_id; if (G_OBJECT_CLASS (nm_device_vlan_parent_class)->constructed) G_OBJECT_CLASS (nm_device_vlan_parent_class)->constructed (object); if (!priv->parent) { nm_log_err (LOGD_VLAN, "(%s): no parent specified.", iface); priv->invalid = TRUE; return; } itype = nm_platform_link_get_type (ifindex); if (itype != NM_LINK_TYPE_VLAN) { nm_log_err (LOGD_VLAN, "(%s): failed to get VLAN interface type.", iface); priv->invalid = TRUE; return; } if (!nm_platform_vlan_get_info (ifindex, &parent_ifindex, &vlan_id)) { nm_log_warn (LOGD_VLAN, "(%s): failed to get VLAN interface info.", iface); priv->invalid = TRUE; return; } if ( parent_ifindex < 0 || parent_ifindex != nm_device_get_ip_ifindex (priv->parent) || vlan_id < 0) { nm_log_warn (LOGD_VLAN, "(%s): VLAN parent ifindex (%d) or VLAN ID (%d) invalid.", iface, parent_ifindex, priv->vlan_id); priv->invalid = TRUE; return; } priv->vlan_id = vlan_id; nm_log_dbg (LOGD_HW | LOGD_VLAN, "(%s): kernel ifindex %d", iface, ifindex); nm_log_info (LOGD_HW | LOGD_VLAN, "(%s): VLAN ID %d with parent %s", iface, priv->vlan_id, nm_device_get_iface (priv->parent)); } static void get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE (object); switch (prop_id) { case PROP_VLAN_ID: g_value_set_uint (value, priv->vlan_id); 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) { NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE (object); switch (prop_id) { case PROP_PARENT: priv->parent = g_value_dup_object (value); priv->parent_state_id = g_signal_connect (priv->parent, "state-changed", G_CALLBACK (parent_state_changed), object); break; case PROP_VLAN_ID: priv->vlan_id = g_value_get_uint (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void dispose (GObject *object) { NMDeviceVlan *self = NM_DEVICE_VLAN (object); NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE (self); if (priv->disposed) { G_OBJECT_CLASS (nm_device_vlan_parent_class)->dispose (object); return; } priv->disposed = TRUE; g_signal_handler_disconnect (priv->parent, priv->parent_state_id); g_object_unref (priv->parent); G_OBJECT_CLASS (nm_device_vlan_parent_class)->dispose (object); } static void nm_device_vlan_class_init (NMDeviceVlanClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); NMDeviceClass *parent_class = NM_DEVICE_CLASS (klass); g_type_class_add_private (object_class, sizeof (NMDeviceVlanPrivate)); /* virtual methods */ object_class->constructed = constructed; object_class->get_property = get_property; object_class->set_property = set_property; object_class->dispose = dispose; parent_class->get_generic_capabilities = get_generic_capabilities; parent_class->bring_up = bring_up; parent_class->act_stage1_prepare = act_stage1_prepare; parent_class->check_connection_compatible = check_connection_compatible; parent_class->complete_connection = complete_connection; parent_class->match_l2_config = match_l2_config; /* properties */ g_object_class_install_property (object_class, PROP_PARENT, g_param_spec_object (NM_DEVICE_VLAN_PARENT, "Parent", "Parent", NM_TYPE_DEVICE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_VLAN_ID, g_param_spec_uint (NM_DEVICE_VLAN_ID, "VLAN ID", "VLAN ID", 0, 4095, 0, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); nm_dbus_manager_register_exported_type (nm_dbus_manager_get (), G_TYPE_FROM_CLASS (klass), &dbus_glib_nm_device_vlan_object_info); dbus_g_error_domain_register (NM_VLAN_ERROR, NULL, NM_TYPE_VLAN_ERROR); }