diff options
Diffstat (limited to 'src/devices/nm-device-vlan.c')
| -rw-r--r-- | src/devices/nm-device-vlan.c | 659 |
1 files changed, 659 insertions, 0 deletions
diff --git a/src/devices/nm-device-vlan.c b/src/devices/nm-device-vlan.c new file mode 100644 index 000000000..348be3528 --- /dev/null +++ b/src/devices/nm-device-vlan.c @@ -0,0 +1,659 @@ +/* -*- 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 <sys/socket.h> +#include <linux/if.h> +#include <netinet/ether.h> + +#include "nm-device-vlan.h" +#include "nm-manager.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-utils.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 { + guint8 initial_hw_addr[ETH_ALEN]; + + gboolean disposed; + gboolean invalid; + + NMDevice *parent; + guint parent_state_id; + + int 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 void +update_initial_hw_address (NMDevice *dev) +{ + NMDeviceVlan *self = NM_DEVICE_VLAN (dev); + NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE (self); + char *mac_str; + + memcpy (priv->initial_hw_addr, nm_device_get_hw_address (dev, NULL), ETH_ALEN); + + mac_str = nm_utils_hwaddr_ntoa (priv->initial_hw_addr, ARPHRD_ETHER); + nm_log_dbg (LOGD_DEVICE | LOGD_VLAN, "(%s): read initial MAC address %s", + nm_device_get_iface (dev), mac_str); + g_free (mac_str); +} + +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) +{ + 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) + return FALSE; + + parent_connection = nm_active_connection_get_connection (NM_ACTIVE_CONNECTION (parent_req)); + if (!parent_connection) + return FALSE; + + if (g_strcmp0 (parent, nm_connection_get_uuid (parent_connection)) != 0) + return FALSE; + } else { + /* interface name */ + if (g_strcmp0 (parent, nm_device_get_ip_iface (priv->parent)) != 0) + 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) +{ + 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)) + return FALSE; + + s_vlan = nm_connection_get_setting_vlan (connection); + if (!s_vlan) + return FALSE; + + if (nm_setting_vlan_get_id (s_vlan) != priv->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)) + return FALSE; + } else { + /* Parent could be a MAC address in an NMSettingWired */ + if (!match_hwaddr (device, connection, TRUE)) + 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) + 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 void parent_state_changed (NMDevice *parent, NMDeviceState new_state, + NMDeviceState old_state, + NMDeviceStateReason reason, + gpointer user_data); + +static void +nm_device_vlan_set_parent (NMDeviceVlan *device, NMDevice *parent) +{ + NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE (device); + + if (priv->parent_state_id) { + g_signal_handler_disconnect (priv->parent, priv->parent_state_id); + priv->parent_state_id = 0; + } + g_clear_object (&priv->parent); + + if (parent) { + priv->parent = g_object_ref (parent); + priv->parent_state_id = g_signal_connect (priv->parent, + "state-changed", + G_CALLBACK (parent_state_changed), + device); + } + g_object_notify (G_OBJECT (device), NM_DEVICE_VLAN_PARENT); +} + +static void +update_connection (NMDevice *device, NMConnection *connection) +{ + NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE (device); + NMSettingVlan *s_vlan = nm_connection_get_setting_vlan (connection); + int ifindex = nm_device_get_ifindex (device); + int parent_ifindex = -1, vlan_id = -1; + NMDevice *parent; + const char *setting_parent, *new_parent; + + if (!s_vlan) { + s_vlan = (NMSettingVlan *) nm_setting_vlan_new (); + nm_connection_add_setting (connection, (NMSetting *) s_vlan); + g_object_set (s_vlan, NM_SETTING_VLAN_INTERFACE_NAME, nm_device_get_iface (device), NULL); + } + + if (!nm_platform_vlan_get_info (ifindex, &parent_ifindex, &vlan_id)) { + nm_log_warn (LOGD_VLAN, "(%s): failed to get VLAN interface info while updating connection.", + nm_device_get_iface (device)); + return; + } + + if (priv->vlan_id != vlan_id) { + priv->vlan_id = vlan_id; + g_object_notify (G_OBJECT (device), NM_DEVICE_VLAN_ID); + } + + if (vlan_id != nm_setting_vlan_get_id (s_vlan)) + g_object_set (s_vlan, NM_SETTING_VLAN_ID, priv->vlan_id, NULL); + + parent = nm_manager_get_device_by_ifindex (nm_manager_get (), parent_ifindex); + g_assert (parent); + if (priv->parent != parent) + nm_device_vlan_set_parent (NM_DEVICE_VLAN (device), parent); + + /* Update parent in the connection; default to parent's interface name */ + new_parent = nm_device_get_iface (parent); + setting_parent = nm_setting_vlan_get_parent (s_vlan); + if (setting_parent && nm_utils_is_uuid (setting_parent)) { + NMConnection *parent_connection; + + /* Don't change a parent specified by UUID if it's still valid */ + parent_connection = nm_connection_provider_get_connection_by_uuid (nm_connection_provider_get (), setting_parent); + if (parent_connection && nm_device_check_connection_compatible (parent, parent_connection)) + new_parent = NULL; + } + if (new_parent) + g_object_set (s_vlan, NM_SETTING_VLAN_PARENT, new_parent, NULL); +} + +static NMActStageReturn +act_stage1_prepare (NMDevice *dev, NMDeviceStateReason *reason) +{ + NMActRequest *req; + NMConnection *connection; + NMSettingVlan *s_vlan; + NMSettingWired *s_wired; + const GByteArray *cloned_mac; + 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_wired = nm_connection_get_setting_wired (connection); + if (s_wired) { + /* Set device MAC address if the connection wants to change it */ + cloned_mac = nm_setting_wired_get_cloned_mac_address (s_wired); + if (cloned_mac && (cloned_mac->len == ETH_ALEN)) + nm_device_set_hw_addr (dev, (const guint8 *) cloned_mac->data, "set", LOGD_VLAN); + } + + 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 +ip4_config_pre_commit (NMDevice *device, NMIP4Config *config) +{ + NMConnection *connection; + NMSettingWired *s_wired; + guint32 mtu; + + connection = nm_device_get_connection (device); + g_assert (connection); + + s_wired = nm_connection_get_setting_wired (connection); + if (s_wired) { + mtu = nm_setting_wired_get_mtu (s_wired); + if (mtu) + nm_ip4_config_set_mtu (config, mtu); + } +} + +static void +deactivate (NMDevice *device) +{ + NMDeviceVlan *self = NM_DEVICE_VLAN (device); + NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE (self); + + /* Reset MAC address back to initial address */ + nm_device_set_hw_addr (device, priv->initial_hw_addr, "reset", LOGD_VLAN); +} + +/******************************************************************/ + +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: + nm_device_vlan_set_parent (NM_DEVICE_VLAN (object), g_value_get_object (value)); + 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; + + nm_device_vlan_set_parent (self, NULL); + + 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); + + parent_class->connection_type = NM_SETTING_VLAN_SETTING_NAME; + + 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->update_initial_hw_address = update_initial_hw_address; + parent_class->get_generic_capabilities = get_generic_capabilities; + parent_class->bring_up = bring_up; + parent_class->act_stage1_prepare = act_stage1_prepare; + parent_class->ip4_config_pre_commit = ip4_config_pre_commit; + parent_class->deactivate = deactivate; + + parent_class->check_connection_compatible = check_connection_compatible; + parent_class->complete_connection = complete_connection; + parent_class->update_connection = update_connection; + + /* 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); +} |