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diff --git a/include/openbsc/signal.h b/include/openbsc/signal.h
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+/* Generic signalling/notification infrastructure */
+/* (C) 2009-2010 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2010 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef OPENBSC_SIGNAL_H
+#define OPENBSC_SIGNAL_H
+
+#include <stdlib.h>
+#include <errno.h>
+
+#include <openbsc/gsm_data.h>
+
+#include <osmocore/signal.h>
+
+/*
+ * Signalling subsystems
+ */
+enum signal_subsystems {
+ SS_PAGING,
+ SS_SMS,
+ SS_ABISIP,
+ SS_NM,
+ SS_LCHAN,
+ SS_SUBSCR,
+ SS_SCALL,
+ SS_GLOBAL,
+ SS_CHALLOC,
+ SS_NS,
+ SS_IPAC_NWL,
+ SS_RF,
+ SS_MSC,
+ SS_HO,
+ SS_INPUT,
+};
+
+/* SS_PAGING signals */
+enum signal_paging {
+ S_PAGING_SUCCEEDED,
+ S_PAGING_EXPIRED,
+};
+
+/* SS_SMS signals */
+enum signal_sms {
+ S_SMS_SUBMITTED, /* A SMS has been successfully submitted to us */
+ S_SMS_DELIVERED, /* A SMS has been successfully delivered to a MS */
+ S_SMS_SMMA, /* A MS tells us it has more space available */
+ S_SMS_MEM_EXCEEDED, /* A MS tells us it has no more space available */
+ S_SMS_UNKNOWN_ERROR, /* A MS tells us it has an error */
+};
+
+/* SS_ABISIP signals */
+enum signal_abisip {
+ S_ABISIP_CRCX_ACK,
+ S_ABISIP_MDCX_ACK,
+ S_ABISIP_DLCX_IND,
+};
+
+/* SS_NM signals */
+enum signal_nm {
+ S_NM_SW_ACTIV_REP, /* GSM 12.21 software activated report */
+ S_NM_FAIL_REP, /* GSM 12.21 failure event report */
+ S_NM_NACK, /* GSM 12.21 various NM_MT_*_NACK happened */
+ S_NM_IPACC_NACK, /* GSM 12.21 nanoBTS extensions NM_MT_IPACC_*_*_NACK happened */
+ S_NM_IPACC_ACK, /* GSM 12.21 nanoBTS extensions NM_MT_IPACC_*_*_ACK happened */
+ S_NM_IPACC_RESTART_ACK, /* nanoBTS has send a restart ack */
+ S_NM_IPACC_RESTART_NACK,/* nanoBTS has send a restart ack */
+ S_NM_TEST_REP, /* GSM 12.21 Test Report */
+ S_NM_STATECHG_OPER, /* Operational State changed*/
+ S_NM_STATECHG_ADM, /* Administrative State changed */
+};
+
+/* SS_LCHAN signals */
+enum signal_lchan {
+ /*
+ * The lchan got freed with an use_count != 0 and error
+ * recovery needs to be carried out from within the
+ * signal handler.
+ */
+ S_LCHAN_UNEXPECTED_RELEASE,
+ S_LCHAN_ACTIVATE_ACK, /* 08.58 Channel Activate ACK */
+ S_LCHAN_ACTIVATE_NACK, /* 08.58 Channel Activate NACK */
+ S_LCHAN_HANDOVER_COMPL, /* 04.08 Handover Completed */
+ S_LCHAN_HANDOVER_FAIL, /* 04.08 Handover Failed */
+ S_LCHAN_HANDOVER_DETECT, /* 08.58 Handover Detect */
+ S_LCHAN_MEAS_REP, /* 08.58 Measurement Report */
+};
+
+/* SS_CHALLOC signals */
+enum signal_challoc {
+ S_CHALLOC_ALLOC_FAIL, /* allocation of lchan has failed */
+ S_CHALLOC_FREED, /* lchan has been successfully freed */
+};
+
+/* SS_SUBSCR signals */
+enum signal_subscr {
+ S_SUBSCR_ATTACHED,
+ S_SUBSCR_DETACHED,
+ S_SUBSCR_IDENTITY, /* we've received some identity information */
+};
+
+/* SS_SCALL signals */
+enum signal_scall {
+ S_SCALL_SUCCESS,
+ S_SCALL_EXPIRED,
+ S_SCALL_DETACHED,
+};
+
+/* SS_IPAC_NWL signals */
+enum signal_ipaccess {
+ S_IPAC_NWL_COMPLETE,
+};
+
+enum signal_global {
+ S_GLOBAL_SHUTDOWN,
+ S_GLOBAL_BTS_CLOSE_OM,
+};
+
+/* SS_RF signals */
+enum signal_rf {
+ S_RF_OFF,
+ S_RF_ON,
+ S_RF_GRACE,
+};
+
+/* SS_INPUT signals */
+enum signal_input {
+ S_INP_NONE,
+ S_INP_TEI_UP,
+ S_INP_TEI_DN,
+ S_INP_LINE_INIT,
+ S_INP_LINE_ALARM,
+ S_INP_LINE_NOALARM,
+};
+
+struct gsm_subscriber;
+
+struct paging_signal_data {
+ struct gsm_subscriber *subscr;
+ struct gsm_bts *bts;
+
+ int paging_result;
+
+ /* NULL in case the paging didn't work */
+ struct gsm_subscriber_connection *conn;
+};
+
+struct scall_signal_data {
+ struct gsm_subscriber *subscr;
+ struct gsm_subscriber_connection *conn;
+ void *data;
+};
+
+struct ipacc_ack_signal_data {
+ struct gsm_bts_trx *trx;
+ u_int8_t msg_type;
+};
+
+struct nm_statechg_signal_data {
+ u_int8_t obj_class;
+ void *obj;
+ struct gsm_nm_state *old_state;
+ struct gsm_nm_state *new_state;
+ struct abis_om_obj_inst *obj_inst;
+};
+
+struct nm_nack_signal_data {
+ struct msgb *msg;
+ uint8_t mt;
+};
+
+struct challoc_signal_data {
+ struct gsm_bts *bts;
+ struct gsm_lchan *lchan;
+ enum gsm_chan_t type;
+};
+
+struct rf_signal_data {
+ struct gsm_network *net;
+};
+
+struct sms_signal_data {
+ /* The transaction where this occured */
+ struct gsm_trans *trans;
+ /* Can be NULL for SMMA */
+ struct gsm_sms *sms;
+ /* int paging result. Only the ones with > 0 */
+ int paging_result;
+};
+
+struct lchan_signal_data {
+ /* The lchan the signal happened on */
+ struct gsm_lchan *lchan;
+ /* Measurement reports on this lchan */
+ struct gsm_meas_rep *mr;
+};
+
+enum signal_ns {
+ S_NS_RESET,
+ S_NS_BLOCK,
+ S_NS_UNBLOCK,
+ S_NS_ALIVE_EXP, /* Tns-alive expired more than N times */
+};
+
+struct ns_signal_data {
+ struct gprs_nsvc *nsvc;
+ uint8_t cause;
+};
+
+/* MSC signals */
+enum signal_msc {
+ S_MSC_LOST,
+ S_MSC_CONNECTED,
+};
+
+struct osmo_msc_data;
+struct msc_signal_data {
+ struct osmo_msc_data *data;
+};
+
+/* handover */
+enum signal_ho {
+ S_HANDOVER_ACK,
+};
+
+struct ho_signal_data {
+ struct gsm_lchan *old_lchan;
+ struct gsm_lchan *new_lchan;
+};
+
+struct input_signal_data {
+ int link_type;
+ uint8_t tei;
+ uint8_t sapi;
+ struct gsm_bts_trx *trx;
+ struct e1inp_line *line;
+};
+
+#endif