/* -*- 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 #include #include #include #include #include #include #include #include #include #include #include #include "nm-device-adsl.h" #include "nm-device-private.h" #include "NetworkManagerUtils.h" #include "nm-logging.h" #include "nm-enum-types.h" #include "nm-dbus-manager.h" #include "nm-platform.h" #include "ppp-manager/nm-ppp-manager.h" #include "nm-setting-adsl.h" #include "nm-device-adsl-glue.h" G_DEFINE_TYPE (NMDeviceAdsl, nm_device_adsl, NM_TYPE_DEVICE) #define NM_DEVICE_ADSL_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_DEVICE_ADSL, NMDeviceAdslPrivate)) /**********************************************/ typedef struct { gboolean disposed; 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; } NMDeviceAdslPrivate; /**************************************************************/ static guint32 get_generic_capabilities (NMDevice *dev) { return (NM_DEVICE_CAP_CARRIER_DETECT | NM_DEVICE_CAP_NONSTANDARD_CARRIER); } static gboolean check_connection_compatible (NMDevice *device, NMConnection *connection) { NMSettingAdsl *s_adsl; const char *protocol; if (!NM_DEVICE_CLASS (nm_device_adsl_parent_class)->check_connection_compatible (device, connection)) return FALSE; if (!nm_connection_is_type (connection, NM_SETTING_ADSL_SETTING_NAME)) return FALSE; s_adsl = nm_connection_get_setting_adsl (connection); if (!s_adsl) return FALSE; /* FIXME: we don't yet support IPoATM */ protocol = nm_setting_adsl_get_protocol (s_adsl); if (g_strcmp0 (protocol, NM_SETTING_ADSL_PROTOCOL_IPOATM) == 0) return FALSE; return TRUE; } static gboolean complete_connection (NMDevice *device, NMConnection *connection, const char *specific_object, const GSList *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 (connection, NM_SETTING_ADSL_SETTING_NAME, existing_connections, _("ADSL connection %d"), NULL, FALSE); /* No IPv6 yet by default */ return TRUE; } /**************************************************************/ static void set_nas_iface (NMDeviceAdsl *self, int idx, const char *name) { NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); g_return_if_fail (name != NULL); g_warn_if_fail (priv->nas_ifindex <= 0); priv->nas_ifindex = idx > 0 ? idx : nm_platform_link_get_ifindex (name); g_warn_if_fail (priv->nas_ifindex > 0); g_warn_if_fail (priv->nas_ifname == NULL); priv->nas_ifname = g_strdup (name); /* Update NAS interface's MAC address */ nm_device_update_hw_address (NM_DEVICE (self)); } static gboolean br2684_create_iface (NMDeviceAdsl *self, NMSettingAdsl *s_adsl) { NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); const char *iface = nm_device_get_iface (NM_DEVICE (self)); struct atm_newif_br2684 ni; int err, fd; gboolean success = FALSE; guint num = 0; g_return_val_if_fail (s_adsl != NULL, FALSE); fd = socket (PF_ATMPVC, SOCK_DGRAM, ATM_AAL5); if (fd < 0) { nm_log_err (LOGD_ADSL, "(%s): failed to open ATM control socket (%d)", iface, errno); return FALSE; } 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) { set_nas_iface (self, -1, ni.ifname); nm_log_info (LOGD_ADSL, "(%s): using NAS interface %s (%d)", iface, priv->nas_ifname, priv->nas_ifindex); success = TRUE; break; } else if (errno == -EEXIST) { /* Try again */ num++; } else { nm_log_warn (LOGD_ADSL, "(%s): failed to create br2684 interface (%d)", iface, errno); break; } } close (fd); return success; } static gboolean br2684_assign_vcc (NMDeviceAdsl *self, NMSettingAdsl *s_adsl) { NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); const char *iface = nm_device_get_iface (NM_DEVICE (self)); struct sockaddr_atmpvc addr; struct atm_backend_br2684 be; struct atm_qos qos; int 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, ATM_AAL5); if (priv->brfd < 0) { nm_log_err (LOGD_ADSL, "(%s): failed to open ATM control socket (%d)", iface, errno); return FALSE; } err = setsockopt (priv->brfd, SOL_SOCKET, SO_SNDBUF, &bufsize, sizeof (bufsize)); if (err != 0) { nm_log_err (LOGD_ADSL, "(%s): failed to set SNDBUF option (%d)", iface, errno); 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) { nm_log_err (LOGD_ADSL, "(%s): failed to set QoS (%d)", iface, errno); 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); nm_log_dbg (LOGD_ADSL, "(%s): assigning address %d.%d.%d encapsulation %s", nm_device_get_iface (NM_DEVICE (self)), priv->atm_index, addr.sap_addr.vpi, addr.sap_addr.vci, encapsulation); err = connect (priv->brfd, (struct sockaddr*) &addr, sizeof (addr)); if (err != 0) { nm_log_err (LOGD_ADSL, "(%s): failed to set VPI/VCI (%d)", iface, errno); 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) { nm_log_err (LOGD_ADSL, "(%s): failed to attach VCC (%d)", iface, errno); goto error; } return TRUE; error: close (priv->brfd); priv->brfd = -1; return FALSE; } static void link_changed_cb (NMPlatform *platform, int ifindex, NMPlatformLink *info, NMPlatformSignalChangeType change_type, NMPlatformReason reason, NMDeviceAdsl *device_adsl) { if (change_type == NM_PLATFORM_SIGNAL_REMOVED) { NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (device_adsl); NMDevice *device = NM_DEVICE (device_adsl); /* 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 */ nm_log_dbg (LOGD_ADSL, "(%s): NAS interface disappeared", nm_device_get_iface (device)); nm_device_state_changed (device, NM_DEVICE_STATE_FAILED, NM_DEVICE_STATE_REASON_BR2684_FAILED); } } } static NMActStageReturn act_stage2_config (NMDevice *device, NMDeviceStateReason *out_reason) { NMDeviceAdsl *self = NM_DEVICE_ADSL (device); NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); NMActStageReturn ret = NM_ACT_STAGE_RETURN_FAILURE; NMSettingAdsl *s_adsl; const char *protocol; g_assert (out_reason); s_adsl = nm_connection_get_setting_adsl (nm_device_get_connection (device)); g_assert (s_adsl); protocol = nm_setting_adsl_get_protocol (s_adsl); nm_log_dbg (LOGD_ADSL, "(%s): using ADSL protocol '%s'", nm_device_get_iface (device), protocol); if (g_strcmp0 (protocol, NM_SETTING_ADSL_PROTOCOL_PPPOE) == 0) { /* PPPoE needs RFC2684 bridging before we can do PPP over it */ if (!br2684_create_iface (self, s_adsl)) { *out_reason = NM_DEVICE_STATE_REASON_BR2684_FAILED; goto done; } /* Set up the VCC */ if (!br2684_assign_vcc (self, s_adsl)) { *out_reason = NM_DEVICE_STATE_REASON_BR2684_FAILED; goto done; } /* Watch for the 'nas' interface going away */ g_signal_connect (nm_platform_get (), NM_PLATFORM_SIGNAL_LINK_CHANGED, G_CALLBACK (link_changed_cb), self); nm_log_dbg (LOGD_ADSL, "(%s): ATM setup successful", nm_device_get_iface (device)); /* otherwise we're good for stage3 */ nm_platform_link_set_up (priv->nas_ifindex); ret = NM_ACT_STAGE_RETURN_SUCCESS; } else if (g_strcmp0 (protocol, NM_SETTING_ADSL_PROTOCOL_PPPOA) == 0) { /* PPPoA doesn't need anything special */ ret = NM_ACT_STAGE_RETURN_SUCCESS; } else { nm_log_warn (LOGD_ADSL, "(%s): unhandled ADSL protocol '%s'", nm_device_get_iface (device), protocol); } done: 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_ip4_config (NMPPPManager *ppp_manager, const char *iface, 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_set_ip_iface (device, iface); nm_device_activate_schedule_ip4_config_result (device, config); } } static NMActStageReturn act_stage3_ip4_config_start (NMDevice *device, NMIP4Config **out_config, NMDeviceStateReason *reason) { NMDeviceAdsl *self = NM_DEVICE_ADSL (device); NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); NMConnection *connection; NMSettingAdsl *s_adsl; NMActRequest *req; GError *err = NULL; NMActStageReturn ret = NM_ACT_STAGE_RETURN_FAILURE; const char *iface = nm_device_get_iface (device); const char *ppp_iface; req = nm_device_get_act_request (device); g_assert (req); connection = nm_act_request_get_connection (req); g_assert (req); s_adsl = nm_connection_get_setting_adsl (connection); g_assert (s_adsl); /* 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; nm_log_dbg (LOGD_ADSL, "(%s): starting PPPoE on NAS interface %s", iface, priv->nas_ifname); } else { ppp_iface = iface; nm_log_dbg (LOGD_ADSL, "(%s): starting PPPoA", iface); } priv->ppp_manager = nm_ppp_manager_new (ppp_iface); if (nm_ppp_manager_start (priv->ppp_manager, req, nm_setting_adsl_get_username (s_adsl), 30, &err)) { g_signal_connect (priv->ppp_manager, "state-changed", G_CALLBACK (ppp_state_changed), self); g_signal_connect (priv->ppp_manager, "ip4-config", G_CALLBACK (ppp_ip4_config), self); ret = NM_ACT_STAGE_RETURN_POSTPONE; } else { nm_log_warn (LOGD_ADSL, "(%s): PPP failed to start: %s", iface, err->message); g_error_free (err); g_object_unref (priv->ppp_manager); priv->ppp_manager = NULL; *reason = NM_DEVICE_STATE_REASON_PPP_START_FAILED; } return ret; } static void deactivate (NMDevice *device) { NMDeviceAdsl *self = NM_DEVICE_ADSL (device); NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); if (priv->ppp_manager) { g_object_unref (priv->ppp_manager); priv->ppp_manager = NULL; } g_signal_handlers_disconnect_by_func (nm_platform_get (), G_CALLBACK (link_changed_cb), device); if (priv->brfd >= 0) { close (priv->brfd); priv->brfd = -1; } /* 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. */ if (priv->nas_ifindex >= 0) priv->nas_ifindex = -1; g_free (priv->nas_ifname); priv->nas_ifname = NULL; /* Poke NMDevice to notice that our hw_address is no longer valid */ nm_device_update_hw_address (NM_DEVICE (self)); } /**************************************************************/ static guint get_hw_address_length (NMDevice *device, gboolean *out_permanent) { NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (device); return priv->nas_ifname ? ETH_ALEN : 0; } static gboolean carrier_update_cb (gpointer user_data) { NMDeviceAdsl *self = NM_DEVICE_ADSL (user_data); int carrier; char *path; const char *iface; iface = nm_device_get_iface (NM_DEVICE (self)); path = g_strdup_printf ("/sys/class/atm/%s/carrier", ASSERT_VALID_PATH_COMPONENT (iface)); carrier = (int) nm_platform_sysctl_get_int_checked (path, 10, 0, 1, -1); g_free (path); if (carrier != -1) nm_device_set_carrier (NM_DEVICE (self), carrier); return TRUE; } /**************************************************************/ NMDevice * nm_device_adsl_new (const char *udi, const char *iface, const char *driver) { g_return_val_if_fail (udi != NULL, NULL); return (NMDevice *) g_object_new (NM_TYPE_DEVICE_ADSL, NM_DEVICE_UDI, udi, NM_DEVICE_IFACE, iface, NM_DEVICE_DRIVER, driver, NM_DEVICE_TYPE_DESC, "ADSL", NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_ADSL, NULL); } static int get_atm_index (const char *iface) { char *path; int idx; path = g_strdup_printf ("/sys/class/atm/%s/atmindex", ASSERT_VALID_PATH_COMPONENT (iface)); idx = (int) nm_platform_sysctl_get_int_checked (path, 10, 0, G_MAXINT, -1); g_free (path); return idx; } static GObject* constructor (GType type, guint n_construct_params, GObjectConstructParam *construct_params) { GObject *object; NMDeviceAdslPrivate *priv; object = G_OBJECT_CLASS (nm_device_adsl_parent_class)->constructor (type, n_construct_params, construct_params); if (!object) return NULL; priv = NM_DEVICE_ADSL_GET_PRIVATE (object); priv->atm_index = get_atm_index (nm_device_get_iface (NM_DEVICE (object))); if (priv->atm_index < 0) { nm_log_err (LOGD_ADSL, "(%s): error reading ATM device index", nm_device_get_iface (NM_DEVICE (object))); g_object_unref (object); return NULL; } else { nm_log_dbg (LOGD_ADSL, "(%s): ATM device index %d", nm_device_get_iface (NM_DEVICE (object)), priv->atm_index); } /* Poll the carrier */ priv->carrier_poll_id = g_timeout_add_seconds (5, carrier_update_cb, object); return object; } static void dispose (GObject *object) { NMDeviceAdsl *self = NM_DEVICE_ADSL (object); NMDeviceAdslPrivate *priv = NM_DEVICE_ADSL_GET_PRIVATE (self); if (priv->disposed) { G_OBJECT_CLASS (nm_device_adsl_parent_class)->dispose (object); return; } priv->disposed = TRUE; if (priv->carrier_poll_id) { g_source_remove (priv->carrier_poll_id); priv->carrier_poll_id = 0; } g_signal_handlers_disconnect_by_func (nm_platform_get (), G_CALLBACK (link_changed_cb), self); g_free (priv->nas_ifname); priv->nas_ifname = NULL; G_OBJECT_CLASS (nm_device_adsl_parent_class)->dispose (object); } static void nm_device_adsl_init (NMDeviceAdsl *self) { } static void nm_device_adsl_class_init (NMDeviceAdslClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); NMDeviceClass *parent_class = NM_DEVICE_CLASS (klass); g_type_class_add_private (object_class, sizeof (NMDeviceAdslPrivate)); object_class->constructor = constructor; object_class->dispose = dispose; parent_class->get_generic_capabilities = get_generic_capabilities; parent_class->check_connection_compatible = check_connection_compatible; parent_class->complete_connection = complete_connection; parent_class->get_hw_address_length = get_hw_address_length; parent_class->act_stage2_config = act_stage2_config; parent_class->act_stage3_ip4_config_start = act_stage3_ip4_config_start; parent_class->deactivate = deactivate; nm_dbus_manager_register_exported_type (nm_dbus_manager_get (), G_TYPE_FROM_CLASS (klass), &dbus_glib_nm_device_adsl_object_info); }