/* -*- 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. * * Pantelis Koukousoulas */ #include "nm-default.h" #include "nm-device-adsl.h" #include #include #include #include #include #include #include #include #include #include "devices/nm-device-private.h" #include "platform/nm-platform.h" #include "ppp/nm-ppp-manager-call.h" #include "ppp/nm-ppp-status.h" #include "nm-setting-adsl.h" #include "nm-utils.h" #include "devices/nm-device-logging.h" _LOG_DECLARE_SELF (NMDeviceAdsl); /*****************************************************************************/ NM_GOBJECT_PROPERTIES_DEFINE_BASE ( PROP_ATM_INDEX, ); typedef struct { guint carrier_poll_id; int atm_index; /* PPP */ NMPPPManager *ppp_manager; /* RFC 2684 bridging (PPPoE over ATM) */ int brfd; int nas_ifindex; char * nas_ifname; guint nas_update_id; guint nas_update_count; } NMDeviceAdslPrivate; struct _NMDeviceAdsl { NMDevice parent; NMDeviceAdslPrivate _priv; }; struct _NMDeviceAdslClass { NMDeviceClass parent; }; G_DEFINE_TYPE (NMDeviceAdsl, nm_device_adsl, NM_TYPE_DEVICE) #define NM_DEVICE_ADSL_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMDeviceAdsl, NM_IS_DEVICE_ADSL) /*****************************************************************************/ static NMDeviceCapabilities get_generic_capabilities (NMDevice *dev) { return ( NM_DEVICE_CAP_CARRIER_DETECT | NM_DEVICE_CAP_NONSTANDARD_CARRIER | NM_DEVICE_CAP_IS_NON_KERNEL); } static gboolean check_connection_compatible (NMDevice *device, NMConnection *connection, GError **error) { NMSettingAdsl *s_adsl; const char *protocol; if (!NM_DEVICE_CLASS (nm_device_adsl_parent_class)->check_connection_compatible (device, connection, error)) return FALSE; s_adsl = nm_connection_get_setting_adsl (connection); protocol = nm_setting_adsl_get_protocol (s_adsl); if (nm_streq0 (protocol, NM_SETTING_ADSL_PROTOCOL_IPOATM)) { /* FIXME: we don't yet support IPoATM */ nm_utils_error_set_literal (error, NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY, "IPoATM protocol is not yet supported"); return FALSE; } return TRUE; } static gboolean complete_connection (NMDevice *device, NMConnection *connection, const char *specific_object, NMConnection *const*existing_connections, GError **error) { NMSettingAdsl *s_adsl; /* * We can't telepathically figure out the username, so if * it wasn't given, we can't complete the connection. */ s_adsl = nm_connection_get_setting_adsl (connection); if (s_adsl && !nm_setting_verify (NM_SETTING (s_adsl), NULL, error)) return FALSE; nm_utils_complete_generic (nm_device_get_platform (device), connection, NM_SETTING_ADSL_SETTING_NAME, existing_connections, NULL, _("ADSL connection"), NULL, FALSE); /* No IPv6 yet by default */ return TRUE; } /*****************************************************************************/ static gboolean br2684_assign_vcc (NMDeviceAdsl *self, NMSettingAdsl *s_adsl) { NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); struct sockaddr_atmpvc addr; struct atm_backend_br2684 be; struct atm_qos qos; int errsv, err, bufsize = 8192; const char *encapsulation; gboolean is_llc; g_return_val_if_fail (priv->brfd == -1, FALSE); g_return_val_if_fail (priv->nas_ifname != NULL, FALSE); priv->brfd = socket (PF_ATMPVC, SOCK_DGRAM | SOCK_CLOEXEC, ATM_AAL5); if (priv->brfd < 0) { errsv = errno; _LOGE (LOGD_ADSL, "failed to open ATM control socket (%d)", errsv); return FALSE; } err = setsockopt (priv->brfd, SOL_SOCKET, SO_SNDBUF, &bufsize, sizeof (bufsize)); if (err != 0) { errsv = errno; _LOGE (LOGD_ADSL, "failed to set SNDBUF option (%d)", errsv); goto error; } /* QoS */ memset (&qos, 0, sizeof (qos)); qos.aal = ATM_AAL5; qos.txtp.traffic_class = ATM_UBR; qos.txtp.max_sdu = 1524; qos.txtp.pcr = ATM_MAX_PCR; qos.rxtp = qos.txtp; err = setsockopt (priv->brfd, SOL_ATM, SO_ATMQOS, &qos, sizeof (qos)); if (err != 0) { errsv = errno; _LOGE (LOGD_ADSL, "failed to set QoS (%d)", errsv); goto error; } encapsulation = nm_setting_adsl_get_encapsulation (s_adsl); /* VPI/VCI */ memset (&addr, 0, sizeof (addr)); addr.sap_family = AF_ATMPVC; addr.sap_addr.itf = priv->atm_index; addr.sap_addr.vpi = (guint16) nm_setting_adsl_get_vpi (s_adsl); addr.sap_addr.vci = (int) nm_setting_adsl_get_vci (s_adsl); _LOGD (LOGD_ADSL, "assigning address %d.%d.%d encapsulation %s", priv->atm_index, addr.sap_addr.vpi, addr.sap_addr.vci, encapsulation ?: "(none)"); err = connect (priv->brfd, (struct sockaddr*) &addr, sizeof (addr)); if (err != 0) { errsv = errno; _LOGE (LOGD_ADSL, "failed to set VPI/VCI (%d)", errsv); goto error; } /* And last attach the VCC to the interface */ is_llc = (g_strcmp0 (encapsulation, "llc") == 0); memset (&be, 0, sizeof (be)); be.backend_num = ATM_BACKEND_BR2684; be.ifspec.method = BR2684_FIND_BYIFNAME; strcpy (be.ifspec.spec.ifname, priv->nas_ifname); be.fcs_in = BR2684_FCSIN_NO; be.fcs_out = BR2684_FCSOUT_NO; be.encaps = is_llc ? BR2684_ENCAPS_LLC : BR2684_ENCAPS_VC; err = ioctl (priv->brfd, ATM_SETBACKEND, &be); if (err != 0) { errsv = errno; _LOGE (LOGD_ADSL, "failed to attach VCC (%d)", errsv); goto error; } return TRUE; error: nm_close (priv->brfd); priv->brfd = -1; return FALSE; } static void link_changed_cb (NMPlatform *platform, int obj_type_i, int ifindex, NMPlatformLink *info, int change_type_i, NMDeviceAdsl *self) { const NMPlatformSignalChangeType change_type = change_type_i; if (change_type == NM_PLATFORM_SIGNAL_REMOVED) { NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); NMDevice *device = NM_DEVICE (self); /* This only gets called for PPPoE connections and "nas" interfaces */ if (priv->nas_ifindex > 0 && ifindex == priv->nas_ifindex) { /* NAS device went away for some reason; kill the connection */ _LOGD (LOGD_ADSL, "br2684 interface disappeared"); nm_device_state_changed (device, NM_DEVICE_STATE_FAILED, NM_DEVICE_STATE_REASON_BR2684_FAILED); } } } static gboolean pppoe_vcc_config (NMDeviceAdsl *self) { NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); NMDevice *device = NM_DEVICE (self); NMSettingAdsl *s_adsl; s_adsl = nm_connection_get_setting_adsl (nm_device_get_applied_connection (device)); g_assert (s_adsl); /* Set up the VCC */ if (!br2684_assign_vcc (self, s_adsl)) return FALSE; /* Watch for the 'nas' interface going away */ g_signal_connect (nm_device_get_platform (device), NM_PLATFORM_SIGNAL_LINK_CHANGED, G_CALLBACK (link_changed_cb), self); _LOGD (LOGD_ADSL, "ATM setup successful"); /* otherwise we're good for stage3 */ nm_platform_link_set_up (nm_device_get_platform (device), priv->nas_ifindex, NULL); return TRUE; } static gboolean nas_update_cb (gpointer user_data) { NMDeviceAdsl *self = NM_DEVICE_ADSL (user_data); NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); NMDevice *device = NM_DEVICE (self); g_assert (priv->nas_ifname); priv->nas_update_count++; if (priv->nas_update_count > 10) { priv->nas_update_id = 0; _LOGW (LOGD_ADSL, "failed to find br2684 interface %s ifindex after timeout", priv->nas_ifname); nm_device_state_changed (device, NM_DEVICE_STATE_FAILED, NM_DEVICE_STATE_REASON_BR2684_FAILED); return G_SOURCE_REMOVE; } g_warn_if_fail (priv->nas_ifindex < 0); priv->nas_ifindex = nm_platform_link_get_ifindex (nm_device_get_platform (device), priv->nas_ifname); if (priv->nas_ifindex < 0) { /* Keep waiting for it to appear */ return G_SOURCE_CONTINUE; } priv->nas_update_id = 0; _LOGD (LOGD_ADSL, "using br2684 iface '%s' index %d", priv->nas_ifname, priv->nas_ifindex); if (pppoe_vcc_config (self)) { nm_device_activate_schedule_stage3_ip_config_start (device); } else { nm_device_state_changed (device, NM_DEVICE_STATE_FAILED, NM_DEVICE_STATE_REASON_BR2684_FAILED); } return G_SOURCE_REMOVE; } static NMActStageReturn br2684_create_iface (NMDeviceAdsl *self, NMSettingAdsl *s_adsl, NMDeviceStateReason *out_failure_reason) { NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); struct atm_newif_br2684 ni; nm_auto_close int fd = -1; int err, errsv; guint num = 0; g_return_val_if_fail (s_adsl != NULL, FALSE); if (priv->nas_update_id) { g_warn_if_fail (priv->nas_update_id == 0); nm_clear_g_source (&priv->nas_update_id); } fd = socket (PF_ATMPVC, SOCK_DGRAM | SOCK_CLOEXEC, ATM_AAL5); if (fd < 0) { errsv = errno; _LOGE (LOGD_ADSL, "failed to open ATM control socket (%d)", errsv); NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_BR2684_FAILED); return NM_ACT_STAGE_RETURN_FAILURE; } memset (&ni, 0, sizeof (ni)); ni.backend_num = ATM_BACKEND_BR2684; ni.media = BR2684_MEDIA_ETHERNET; ni.mtu = 1500; /* Loop attempting to create an interface that doesn't exist yet. The * kernel can create one for us automatically, but due to API issues it * cannot return that name to us. Since we want to know the name right * away, just brute-force it. */ while (num < 10000) { memset (&ni.ifname, 0, sizeof (ni.ifname)); g_snprintf (ni.ifname, sizeof (ni.ifname), "nas%d", num++); err = ioctl (fd, ATM_NEWBACKENDIF, &ni); if (err == 0) { g_free (priv->nas_ifname); priv->nas_ifname = g_strdup (ni.ifname); _LOGD (LOGD_ADSL, "waiting for br2684 iface '%s' to appear", priv->nas_ifname); priv->nas_update_count = 0; priv->nas_update_id = g_timeout_add (100, nas_update_cb, self); return NM_ACT_STAGE_RETURN_POSTPONE; } if (errno != EEXIST) { errsv = errno; _LOGW (LOGD_ADSL, "failed to create br2684 interface (%d)", errsv); break; } } NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_BR2684_FAILED); return NM_ACT_STAGE_RETURN_FAILURE; } static NMActStageReturn act_stage2_config (NMDevice *device, NMDeviceStateReason *out_failure_reason) { NMDeviceAdsl *self = NM_DEVICE_ADSL (device); NMActStageReturn ret = NM_ACT_STAGE_RETURN_FAILURE; NMSettingAdsl *s_adsl; const char *protocol; s_adsl = nm_connection_get_setting_adsl (nm_device_get_applied_connection (device)); g_return_val_if_fail (s_adsl, NM_ACT_STAGE_RETURN_FAILURE); protocol = nm_setting_adsl_get_protocol (s_adsl); _LOGD (LOGD_ADSL, "using ADSL protocol '%s'", protocol); if (g_strcmp0 (protocol, NM_SETTING_ADSL_PROTOCOL_PPPOE) == 0) { /* PPPoE needs RFC2684 bridging before we can do PPP over it */ ret = br2684_create_iface (self, s_adsl, out_failure_reason); } else if (g_strcmp0 (protocol, NM_SETTING_ADSL_PROTOCOL_PPPOA) == 0) { /* PPPoA doesn't need anything special */ ret = NM_ACT_STAGE_RETURN_SUCCESS; } else _LOGW (LOGD_ADSL, "unhandled ADSL protocol '%s'", protocol); return ret; } static void ppp_state_changed (NMPPPManager *ppp_manager, NMPPPStatus status, gpointer user_data) { NMDevice *device = NM_DEVICE (user_data); switch (status) { case NM_PPP_STATUS_DISCONNECT: nm_device_state_changed (device, NM_DEVICE_STATE_FAILED, NM_DEVICE_STATE_REASON_PPP_DISCONNECT); break; case NM_PPP_STATUS_DEAD: nm_device_state_changed (device, NM_DEVICE_STATE_FAILED, NM_DEVICE_STATE_REASON_PPP_FAILED); break; default: break; } } static void ppp_ifindex_set (NMPPPManager *ppp_manager, int ifindex, const char *iface, gpointer user_data) { NMDevice *device = NM_DEVICE (user_data); if (!nm_device_set_ip_ifindex (device, ifindex)) { nm_device_state_changed (device, NM_DEVICE_STATE_FAILED, NM_DEVICE_STATE_REASON_IP_CONFIG_UNAVAILABLE); } } static void ppp_ip4_config (NMPPPManager *ppp_manager, NMIP4Config *config, gpointer user_data) { NMDevice *device = NM_DEVICE (user_data); /* Ignore PPP IP4 events that come in after initial configuration */ if (nm_device_activate_ip4_state_in_conf (device)) { nm_device_activate_schedule_ip4_config_result (device, config); } } static NMActStageReturn act_stage3_ip4_config_start (NMDevice *device, NMIP4Config **out_config, NMDeviceStateReason *out_failure_reason) { NMDeviceAdsl *self = NM_DEVICE_ADSL (device); NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); NMSettingAdsl *s_adsl; NMActRequest *req; GError *err = NULL; const char *ppp_iface; req = nm_device_get_act_request (device); g_return_val_if_fail (req, NM_ACT_STAGE_RETURN_FAILURE); s_adsl = (NMSettingAdsl *) nm_device_get_applied_setting (device, NM_TYPE_SETTING_ADSL); g_return_val_if_fail (s_adsl, NM_ACT_STAGE_RETURN_FAILURE); /* PPPoE uses the NAS interface, not the ATM interface */ if (g_strcmp0 (nm_setting_adsl_get_protocol (s_adsl), NM_SETTING_ADSL_PROTOCOL_PPPOE) == 0) { g_assert (priv->nas_ifname); ppp_iface = priv->nas_ifname; _LOGD (LOGD_ADSL, "starting PPPoE on br2684 interface %s", priv->nas_ifname); } else { ppp_iface = nm_device_get_iface (device); _LOGD (LOGD_ADSL, "starting PPPoA"); } priv->ppp_manager = nm_ppp_manager_create (ppp_iface, &err); if (priv->ppp_manager) { nm_ppp_manager_set_route_parameters (priv->ppp_manager, nm_device_get_route_table (device, AF_INET, TRUE), nm_device_get_route_metric (device, AF_INET), nm_device_get_route_table (device, AF_INET6, TRUE), nm_device_get_route_metric (device, AF_INET6)); } if ( !priv->ppp_manager || !nm_ppp_manager_start (priv->ppp_manager, req, nm_setting_adsl_get_username (s_adsl), 30, 0, &err)) { _LOGW (LOGD_ADSL, "PPP failed to start: %s", err->message); g_error_free (err); g_clear_object (&priv->ppp_manager); NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_PPP_START_FAILED); return NM_ACT_STAGE_RETURN_FAILURE; } g_signal_connect (priv->ppp_manager, NM_PPP_MANAGER_SIGNAL_STATE_CHANGED, G_CALLBACK (ppp_state_changed), self); g_signal_connect (priv->ppp_manager, NM_PPP_MANAGER_SIGNAL_IFINDEX_SET, G_CALLBACK (ppp_ifindex_set), self); g_signal_connect (priv->ppp_manager, NM_PPP_MANAGER_SIGNAL_IP4_CONFIG, G_CALLBACK (ppp_ip4_config), self); return NM_ACT_STAGE_RETURN_POSTPONE; } static void adsl_cleanup (NMDeviceAdsl *self) { NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); if (priv->ppp_manager) { g_signal_handlers_disconnect_by_func (priv->ppp_manager, G_CALLBACK (ppp_state_changed), self); g_signal_handlers_disconnect_by_func (priv->ppp_manager, G_CALLBACK (ppp_ip4_config), self); nm_ppp_manager_stop (priv->ppp_manager, NULL, NULL); g_clear_object (&priv->ppp_manager); } g_signal_handlers_disconnect_by_func (nm_device_get_platform (NM_DEVICE (self)), G_CALLBACK (link_changed_cb), self); nm_close (priv->brfd); priv->brfd = -1; nm_clear_g_source (&priv->nas_update_id); /* FIXME: kernel has no way of explicitly deleting the 'nasX' interface yet, * so it gets leaked. It does get destroyed when it's no longer in use, * but we have no control over that. */ priv->nas_ifindex = -1; g_clear_pointer (&priv->nas_ifname, g_free); } static void deactivate (NMDevice *device) { adsl_cleanup (NM_DEVICE_ADSL (device)); } /*****************************************************************************/ static gboolean carrier_update_cb (gpointer user_data) { NMDeviceAdsl *self = NM_DEVICE_ADSL (user_data); int carrier; char *path; path = g_strdup_printf ("/sys/class/atm/%s/carrier", NM_ASSERT_VALID_PATH_COMPONENT (nm_device_get_iface (NM_DEVICE (self)))); carrier = (int) nm_platform_sysctl_get_int_checked (nm_device_get_platform (NM_DEVICE (self)), NMP_SYSCTL_PATHID_ABSOLUTE (path), 10, 0, 1, -1); g_free (path); if (carrier != -1) nm_device_set_carrier (NM_DEVICE (self), carrier); return TRUE; } /*****************************************************************************/ static void get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { switch (prop_id) { case PROP_ATM_INDEX: g_value_set_int (value, NM_DEVICE_ADSL_GET_PRIVATE ((NMDeviceAdsl *) object)->atm_index); 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) { case PROP_ATM_INDEX: /* construct-only */ NM_DEVICE_ADSL_GET_PRIVATE ((NMDeviceAdsl *) object)->atm_index = g_value_get_int (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /*****************************************************************************/ static void nm_device_adsl_init (NMDeviceAdsl *self) { } static void constructed (GObject *object) { NMDeviceAdsl *self = NM_DEVICE_ADSL (object); NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); G_OBJECT_CLASS (nm_device_adsl_parent_class)->constructed (object); priv->carrier_poll_id = g_timeout_add_seconds (5, carrier_update_cb, self); _LOGD (LOGD_ADSL, "ATM device index %d", priv->atm_index); g_return_if_fail (priv->atm_index >= 0); } NMDevice * nm_device_adsl_new (const char *udi, const char *iface, const char *driver, int atm_index) { g_return_val_if_fail (udi != NULL, NULL); g_return_val_if_fail (atm_index >= 0, NULL); return (NMDevice *) g_object_new (NM_TYPE_DEVICE_ADSL, NM_DEVICE_UDI, udi, NM_DEVICE_IFACE, iface, NM_DEVICE_DRIVER, driver, NM_DEVICE_ADSL_ATM_INDEX, atm_index, NM_DEVICE_TYPE_DESC, "ADSL", NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_ADSL, NULL); } static void dispose (GObject *object) { adsl_cleanup (NM_DEVICE_ADSL (object)); nm_clear_g_source (&NM_DEVICE_ADSL_GET_PRIVATE ((NMDeviceAdsl *) object)->carrier_poll_id); G_OBJECT_CLASS (nm_device_adsl_parent_class)->dispose (object); } static const NMDBusInterfaceInfoExtended interface_info_device_adsl = { .parent = NM_DEFINE_GDBUS_INTERFACE_INFO_INIT ( NM_DBUS_INTERFACE_DEVICE_ADSL, .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 ("Carrier", "b", NM_DEVICE_CARRIER), ), ), .legacy_property_changed = TRUE, }; static void nm_device_adsl_class_init (NMDeviceAdslClass *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->constructed = constructed; object_class->dispose = dispose; object_class->get_property = get_property; object_class->set_property = set_property; dbus_object_class->interface_infos = NM_DBUS_INTERFACE_INFOS (&interface_info_device_adsl); device_class->connection_type_check_compatible = NM_SETTING_ADSL_SETTING_NAME; device_class->get_generic_capabilities = get_generic_capabilities; device_class->check_connection_compatible = check_connection_compatible; device_class->complete_connection = complete_connection; device_class->act_stage2_config = act_stage2_config; device_class->act_stage3_ip4_config_start = act_stage3_ip4_config_start; device_class->deactivate = deactivate; obj_properties[PROP_ATM_INDEX] = g_param_spec_int (NM_DEVICE_ADSL_ATM_INDEX, "", "", -1, G_MAXINT, -1, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); g_object_class_install_properties (object_class, _PROPERTY_ENUMS_LAST, obj_properties); }