diff options
Diffstat (limited to 'src/devices/nm-device-tun.c')
| -rw-r--r-- | src/devices/nm-device-tun.c | 571 |
1 files changed, 0 insertions, 571 deletions
diff --git a/src/devices/nm-device-tun.c b/src/devices/nm-device-tun.c deleted file mode 100644 index 94805255..00000000 --- a/src/devices/nm-device-tun.c +++ /dev/null @@ -1,571 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ -/* - * Copyright (C) 2013 - 2015 Red Hat, Inc. - */ - -#include "nm-default.h" - -#include "nm-device-tun.h" - -#include <stdlib.h> -#include <sys/types.h> -#include <linux/if_tun.h> - -#include "nm-act-request.h" -#include "nm-device-private.h" -#include "nm-ip4-config.h" -#include "platform/nm-platform.h" -#include "nm-device-factory.h" -#include "nm-setting-tun.h" -#include "nm-core-internal.h" - -#include "nm-device-logging.h" -_LOG_DECLARE_SELF(NMDeviceTun); - -/*****************************************************************************/ - -NM_GOBJECT_PROPERTIES_DEFINE(NMDeviceTun, - PROP_OWNER, - PROP_GROUP, - PROP_MODE, - PROP_NO_PI, - PROP_VNET_HDR, - PROP_MULTI_QUEUE, ); - -typedef struct { - NMPlatformLnkTun props; -} NMDeviceTunPrivate; - -struct _NMDeviceTun { - NMDevice parent; - NMDeviceTunPrivate _priv; -}; - -struct _NMDeviceTunClass { - NMDeviceClass parent; -}; - -G_DEFINE_TYPE(NMDeviceTun, nm_device_tun, NM_TYPE_DEVICE) - -#define NM_DEVICE_TUN_GET_PRIVATE(self) \ - _NM_GET_PRIVATE(self, NMDeviceTun, NM_IS_DEVICE_TUN, NMDevice) - -/*****************************************************************************/ - -static void -update_properties_from_struct(NMDeviceTun *self, const NMPlatformLnkTun *props) -{ - NMDeviceTunPrivate * priv = NM_DEVICE_TUN_GET_PRIVATE(self); - const NMPlatformLnkTun props0 = {}; - - if (!props) { - /* allow passing %NULL to reset all properties. */ - props = &props0; - } - - g_object_freeze_notify(G_OBJECT(self)); - -#define CHECK_PROPERTY_CHANGED_VALID(field, prop) \ - G_STMT_START \ - { \ - if (priv->props.field != props->field \ - || priv->props.field##_valid != props->field##_valid) { \ - priv->props.field##_valid = props->field##_valid; \ - priv->props.field = props->field; \ - _notify(self, prop); \ - } \ - } \ - G_STMT_END - -#define CHECK_PROPERTY_CHANGED(field, prop) \ - G_STMT_START \ - { \ - if (priv->props.field != props->field) { \ - priv->props.field = props->field; \ - _notify(self, prop); \ - } \ - } \ - G_STMT_END - - CHECK_PROPERTY_CHANGED_VALID(owner, PROP_OWNER); - CHECK_PROPERTY_CHANGED_VALID(group, PROP_GROUP); - CHECK_PROPERTY_CHANGED(type, PROP_MODE); - CHECK_PROPERTY_CHANGED(pi, PROP_NO_PI); - CHECK_PROPERTY_CHANGED(vnet_hdr, PROP_VNET_HDR); - CHECK_PROPERTY_CHANGED(multi_queue, PROP_MULTI_QUEUE); - - g_object_thaw_notify(G_OBJECT(self)); -} - -static void -update_properties(NMDeviceTun *self) -{ - NMPlatformLnkTun props_storage; - const NMPlatformLnkTun *props = NULL; - int ifindex; - - ifindex = nm_device_get_ifindex(NM_DEVICE(self)); - if (ifindex > 0 - && nm_platform_link_tun_get_properties(nm_device_get_platform(NM_DEVICE(self)), - ifindex, - &props_storage)) - props = &props_storage; - - update_properties_from_struct(self, props); -} - -static NMDeviceCapabilities -get_generic_capabilities(NMDevice *dev) -{ - return NM_DEVICE_CAP_IS_SOFTWARE; -} - -static void -link_changed(NMDevice *device, const NMPlatformLink *pllink) -{ - NM_DEVICE_CLASS(nm_device_tun_parent_class)->link_changed(device, pllink); - update_properties(NM_DEVICE_TUN(device)); -} - -static gboolean -complete_connection(NMDevice * device, - NMConnection * connection, - const char * specific_object, - NMConnection *const *existing_connections, - GError ** error) -{ - NMSettingTun *s_tun; - - nm_utils_complete_generic(nm_device_get_platform(device), - connection, - NM_SETTING_TUN_SETTING_NAME, - existing_connections, - NULL, - _("TUN connection"), - NULL, - NULL, - TRUE); - - s_tun = nm_connection_get_setting_tun(connection); - if (!s_tun) { - g_set_error_literal(error, - NM_DEVICE_ERROR, - NM_DEVICE_ERROR_INVALID_CONNECTION, - "A 'tun' setting is required."); - return FALSE; - } - - return TRUE; -} - -static void -update_connection(NMDevice *device, NMConnection *connection) -{ - NMDeviceTun * self = NM_DEVICE_TUN(device); - NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE(self); - NMSettingTun * s_tun; - NMSettingTunMode mode; - char s_buf[100]; - const char * str; - - /* Note: since we read tun properties from sysctl for older kernels, - * we don't get proper change notifications. Make sure that all our - * tun properties are up to date at this point. We should not do this, - * if we would entirely rely on netlink events. */ - update_properties(NM_DEVICE_TUN(device)); - - switch (priv->props.type) { - case IFF_TUN: - mode = NM_SETTING_TUN_MODE_TUN; - break; - case IFF_TAP: - mode = NM_SETTING_TUN_MODE_TAP; - break; - default: - /* Huh? */ - return; - } - - s_tun = nm_connection_get_setting_tun(connection); - if (!s_tun) { - s_tun = (NMSettingTun *) nm_setting_tun_new(); - nm_connection_add_setting(connection, (NMSetting *) s_tun); - } - - if (mode != nm_setting_tun_get_mode(s_tun)) - g_object_set(G_OBJECT(s_tun), NM_SETTING_TUN_MODE, (guint) mode, NULL); - - str = priv->props.owner_valid ? nm_sprintf_buf(s_buf, "%" G_GINT32_FORMAT, priv->props.owner) - : NULL; - if (!nm_streq0(str, nm_setting_tun_get_owner(s_tun))) - g_object_set(G_OBJECT(s_tun), NM_SETTING_TUN_OWNER, str, NULL); - - str = priv->props.group_valid ? nm_sprintf_buf(s_buf, "%" G_GINT32_FORMAT, priv->props.group) - : NULL; - if (!nm_streq0(str, nm_setting_tun_get_group(s_tun))) - g_object_set(G_OBJECT(s_tun), NM_SETTING_TUN_GROUP, str, NULL); - - if (priv->props.pi != nm_setting_tun_get_pi(s_tun)) - g_object_set(G_OBJECT(s_tun), NM_SETTING_TUN_PI, (gboolean) priv->props.pi, NULL); - if (priv->props.vnet_hdr != nm_setting_tun_get_vnet_hdr(s_tun)) - g_object_set(G_OBJECT(s_tun), - NM_SETTING_TUN_VNET_HDR, - (gboolean) priv->props.vnet_hdr, - NULL); - if (priv->props.multi_queue != nm_setting_tun_get_multi_queue(s_tun)) - g_object_set(G_OBJECT(s_tun), - NM_SETTING_TUN_MULTI_QUEUE, - (gboolean) priv->props.multi_queue, - NULL); -} - -static gboolean -create_and_realize(NMDevice * device, - NMConnection * connection, - NMDevice * parent, - const NMPlatformLink **out_plink, - GError ** error) -{ - const char * iface = nm_device_get_iface(device); - NMPlatformLnkTun props = {}; - NMSettingTun * s_tun; - gint64 owner; - gint64 group; - int r; - - s_tun = nm_connection_get_setting_tun(connection); - g_return_val_if_fail(s_tun, FALSE); - - switch (nm_setting_tun_get_mode(s_tun)) { - case NM_SETTING_TUN_MODE_TAP: - props.type = IFF_TAP; - break; - case NM_SETTING_TUN_MODE_TUN: - props.type = IFF_TUN; - break; - default: - g_return_val_if_reached(FALSE); - } - - owner = _nm_utils_ascii_str_to_int64(nm_setting_tun_get_owner(s_tun), 10, 0, G_MAXINT32, -1); - if (owner != -1) { - props.owner_valid = TRUE; - props.owner = owner; - } - group = _nm_utils_ascii_str_to_int64(nm_setting_tun_get_group(s_tun), 10, 0, G_MAXINT32, -1); - if (group != -1) { - props.group_valid = TRUE; - props.group = group; - } - - props.pi = nm_setting_tun_get_pi(s_tun); - props.vnet_hdr = nm_setting_tun_get_vnet_hdr(s_tun); - props.multi_queue = nm_setting_tun_get_multi_queue(s_tun); - props.persist = TRUE; - - r = nm_platform_link_tun_add(nm_device_get_platform(device), iface, &props, out_plink, NULL); - if (r < 0) { - g_set_error(error, - NM_DEVICE_ERROR, - NM_DEVICE_ERROR_CREATION_FAILED, - "Failed to create TUN/TAP interface '%s' for '%s': %s", - iface, - nm_connection_get_id(connection), - nm_strerror(r)); - return FALSE; - } - - return TRUE; -} - -static gboolean -_same_og(const char *str, gboolean og_valid, guint32 og_num) -{ - gint64 v; - - v = _nm_utils_ascii_str_to_int64(str, 10, 0, G_MAXINT32, -1); - return (!og_valid && (v == (gint64) -1)) || (og_valid && (((guint32) v) == og_num)); -} - -static gboolean -check_connection_compatible(NMDevice *device, NMConnection *connection, GError **error) -{ - NMDeviceTun * self = NM_DEVICE_TUN(device); - NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE(self); - NMSettingTunMode mode; - NMSettingTun * s_tun; - - if (!NM_DEVICE_CLASS(nm_device_tun_parent_class) - ->check_connection_compatible(device, connection, error)) - return FALSE; - - if (nm_device_is_real(device)) { - switch (priv->props.type) { - case IFF_TUN: - mode = NM_SETTING_TUN_MODE_TUN; - break; - case IFF_TAP: - mode = NM_SETTING_TUN_MODE_TAP; - break; - default: - nm_utils_error_set_literal(error, - NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY, - "invalid tun type on device"); - return FALSE; - } - - s_tun = nm_connection_get_setting_tun(connection); - - if (mode != nm_setting_tun_get_mode(s_tun)) { - nm_utils_error_set_literal(error, - NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY, - "tun mode setting mismatches"); - return FALSE; - } - if (!_same_og(nm_setting_tun_get_owner(s_tun), - priv->props.owner_valid, - priv->props.owner)) { - nm_utils_error_set_literal(error, - NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY, - "tun owner setting mismatches"); - return FALSE; - } - if (!_same_og(nm_setting_tun_get_group(s_tun), - priv->props.group_valid, - priv->props.group)) { - nm_utils_error_set_literal(error, - NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY, - "tun group setting mismatches"); - return FALSE; - } - if (nm_setting_tun_get_pi(s_tun) != priv->props.pi) { - nm_utils_error_set_literal(error, - NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY, - "tun pi setting mismatches"); - return FALSE; - } - if (nm_setting_tun_get_vnet_hdr(s_tun) != priv->props.vnet_hdr) { - nm_utils_error_set_literal(error, - NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY, - "tun vnet-hdr setting mismatches"); - return FALSE; - } - if (nm_setting_tun_get_multi_queue(s_tun) != priv->props.multi_queue) { - nm_utils_error_set_literal(error, - NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY, - "tun multi-queue setting mismatches"); - return FALSE; - } - } - - return TRUE; -} - -static NMActStageReturn -act_stage1_prepare(NMDevice *device, NMDeviceStateReason *out_failure_reason) -{ - NMDeviceTun * self = NM_DEVICE_TUN(device); - NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE(self); - - if (priv->props.type == IFF_TUN) { - /* Nothing to do for TUN devices */ - } else { - if (!nm_device_hw_addr_set_cloned(device, - nm_device_get_applied_connection(device), - FALSE)) { - *out_failure_reason = NM_DEVICE_STATE_REASON_CONFIG_FAILED; - return NM_ACT_STAGE_RETURN_FAILURE; - } - } - - return NM_ACT_STAGE_RETURN_SUCCESS; -} - -static void -unrealize_notify(NMDevice *device) -{ - NM_DEVICE_CLASS(nm_device_tun_parent_class)->unrealize_notify(device); - update_properties_from_struct(NM_DEVICE_TUN(device), NULL); -} - -/*****************************************************************************/ - -static void -get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) -{ - NMDeviceTun * self = NM_DEVICE_TUN(object); - NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE(self); - const char * s; - - switch (prop_id) { - case PROP_OWNER: - g_value_set_int64(value, - priv->props.owner_valid ? (gint64) priv->props.owner : (gint64) -1); - break; - case PROP_GROUP: - g_value_set_int64(value, - priv->props.group_valid ? (gint64) priv->props.group : (gint64) -1); - break; - case PROP_MODE: - switch (priv->props.type) { - case IFF_TUN: - s = "tun"; - break; - case IFF_TAP: - s = "tap"; - break; - default: - s = NULL; - break; - } - g_value_set_static_string(value, s); - break; - case PROP_NO_PI: - g_value_set_boolean(value, !priv->props.pi); - break; - case PROP_VNET_HDR: - g_value_set_boolean(value, priv->props.vnet_hdr); - break; - case PROP_MULTI_QUEUE: - g_value_set_boolean(value, priv->props.multi_queue); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec); - break; - } -} - -/*****************************************************************************/ - -static void -nm_device_tun_init(NMDeviceTun *self) -{} - -static const NMDBusInterfaceInfoExtended interface_info_device_tun = { - .parent = NM_DEFINE_GDBUS_INTERFACE_INFO_INIT( - NM_DBUS_INTERFACE_DEVICE_TUN, - .signals = NM_DEFINE_GDBUS_SIGNAL_INFOS(&nm_signal_info_property_changed_legacy, ), - .properties = NM_DEFINE_GDBUS_PROPERTY_INFOS( - NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("Owner", "x", NM_DEVICE_TUN_OWNER), - NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("Group", "x", NM_DEVICE_TUN_GROUP), - NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("Mode", "s", NM_DEVICE_TUN_MODE), - NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("NoPi", "b", NM_DEVICE_TUN_NO_PI), - NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("VnetHdr", - "b", - NM_DEVICE_TUN_VNET_HDR), - NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("MultiQueue", - "b", - NM_DEVICE_TUN_MULTI_QUEUE), - NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("HwAddress", - "s", - NM_DEVICE_HW_ADDRESS), ), ), - .legacy_property_changed = TRUE, -}; - -static void -nm_device_tun_class_init(NMDeviceTunClass *klass) -{ - GObjectClass * object_class = G_OBJECT_CLASS(klass); - NMDBusObjectClass *dbus_object_class = NM_DBUS_OBJECT_CLASS(klass); - NMDeviceClass * device_class = NM_DEVICE_CLASS(klass); - - object_class->get_property = get_property; - - dbus_object_class->interface_infos = NM_DBUS_INTERFACE_INFOS(&interface_info_device_tun); - - device_class->connection_type_supported = NM_SETTING_TUN_SETTING_NAME; - device_class->connection_type_check_compatible = NM_SETTING_TUN_SETTING_NAME; - device_class->link_types = NM_DEVICE_DEFINE_LINK_TYPES(NM_LINK_TYPE_TUN); - - device_class->link_changed = link_changed; - device_class->complete_connection = complete_connection; - device_class->check_connection_compatible = check_connection_compatible; - device_class->create_and_realize = create_and_realize; - device_class->get_generic_capabilities = get_generic_capabilities; - device_class->unrealize_notify = unrealize_notify; - device_class->update_connection = update_connection; - device_class->act_stage1_prepare = act_stage1_prepare; - device_class->get_configured_mtu = nm_device_get_configured_mtu_for_wired; - - obj_properties[PROP_OWNER] = g_param_spec_int64(NM_DEVICE_TUN_OWNER, - "", - "", - -1, - G_MAXUINT32, - -1, - G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); - - obj_properties[PROP_GROUP] = g_param_spec_int64(NM_DEVICE_TUN_GROUP, - "", - "", - -1, - G_MAXUINT32, - -1, - G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); - - obj_properties[PROP_MODE] = g_param_spec_string(NM_DEVICE_TUN_MODE, - "", - "", - NULL, - G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); - - obj_properties[PROP_NO_PI] = g_param_spec_boolean(NM_DEVICE_TUN_NO_PI, - "", - "", - FALSE, - G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); - - obj_properties[PROP_VNET_HDR] = g_param_spec_boolean(NM_DEVICE_TUN_VNET_HDR, - "", - "", - FALSE, - G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); - - obj_properties[PROP_MULTI_QUEUE] = - g_param_spec_boolean(NM_DEVICE_TUN_MULTI_QUEUE, - "", - "", - FALSE, - G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); - - g_object_class_install_properties(object_class, _PROPERTY_ENUMS_LAST, obj_properties); -} - -/*****************************************************************************/ - -#define NM_TYPE_TUN_DEVICE_FACTORY (nm_tun_device_factory_get_type()) -#define NM_TUN_DEVICE_FACTORY(obj) \ - (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_TUN_DEVICE_FACTORY, NMTunDeviceFactory)) - -static NMDevice * -create_device(NMDeviceFactory * factory, - const char * iface, - const NMPlatformLink *plink, - NMConnection * connection, - gboolean * out_ignore) -{ - g_return_val_if_fail(!plink || plink->type == NM_LINK_TYPE_TUN, NULL); - g_return_val_if_fail(!connection - || nm_streq0(nm_connection_get_connection_type(connection), - NM_SETTING_TUN_SETTING_NAME), - NULL); - - return (NMDevice *) g_object_new(NM_TYPE_DEVICE_TUN, - NM_DEVICE_IFACE, - iface, - NM_DEVICE_TYPE_DESC, - "Tun", - NM_DEVICE_DEVICE_TYPE, - NM_DEVICE_TYPE_TUN, - NM_DEVICE_LINK_TYPE, - (guint) NM_LINK_TYPE_TUN, - NULL); -} - -NM_DEVICE_FACTORY_DEFINE_INTERNAL( - TUN, - Tun, - tun, - NM_DEVICE_FACTORY_DECLARE_LINK_TYPES(NM_LINK_TYPE_TUN) - NM_DEVICE_FACTORY_DECLARE_SETTING_TYPES(NM_SETTING_TUN_SETTING_NAME), - factory_class->create_device = create_device;); 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