aboutsummaryrefslogtreecommitdiffstats
path: root/include/osmocom/bsc/gsm_data.h
blob: d82d1bac8612bd3d32f0da2eb5d96c90a1108604 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
#ifndef _GSM_DATA_H
#define _GSM_DATA_H

#include <stdint.h>
#include <regex.h>
#include <sys/types.h>
#include <stdbool.h>
#include <stdint.h>

#include <osmocom/core/timer.h>
#include <osmocom/core/rate_ctr.h>
#include <osmocom/core/select.h>
#include <osmocom/core/stats.h>
#include <osmocom/core/stat_item.h>
#include <osmocom/gsm/bts_features.h>
#include <osmocom/gsm/protocol/gsm_08_08.h>
#include <osmocom/gsm/gsm0808.h>
#include <osmocom/gsm/gsm48.h>
#include <osmocom/core/fsm.h>
#include <osmocom/core/tdef.h>

#include <osmocom/crypt/auth.h>

#include <osmocom/bsc/rest_octets.h>

#include <osmocom/core/bitvec.h>
#include <osmocom/gsm/gsm_utils.h>
#include <osmocom/gsm/rxlev_stat.h>
#include <osmocom/gsm/protocol/gsm_08_58.h>
#include <osmocom/gsm/protocol/gsm_12_21.h>
#include <osmocom/abis/e1_input.h>
#include <osmocom/bsc/meas_rep.h>
#include <osmocom/bsc/bsc_msg_filter.h>
#include <osmocom/bsc/acc_ramp.h>
#include <osmocom/bsc/neighbor_ident.h>
#include <osmocom/bsc/osmux.h>

#define GSM_T3122_DEFAULT 10

struct mgcp_client_conf;
struct mgcp_client;
struct gsm0808_cell_id;
struct osmo_mgcpc_ep;

/** annotations for msgb ownership */
#define __uses

#define OBSC_NM_W_ACK_CB(__msgb) (__msgb)->cb[3]

struct bsc_subscr;
struct gprs_ra_id;
struct handover;

#define OBSC_LINKID_CB(__msgb)	(__msgb)->cb[3]

#define tmsi_from_string(str) strtoul(str, NULL, 10)

/* 3-bit long values */
#define EARFCN_PRIO_INVALID 8
#define EARFCN_MEAS_BW_INVALID 8
/* 5-bit long values */
#define EARFCN_QRXLV_INVALID 32
#define EARFCN_THRESH_LOW_INVALID 32

struct msgb;
typedef int gsm_cbfn(unsigned int hooknum,
		     unsigned int event,
		     struct msgb *msg,
		     void *data, void *param);

/* Maximum number of neighbor cells whose average we track */
#define MAX_NEIGH_MEAS		10
/* Maximum size of the averaging window for neighbor cells */
#define MAX_WIN_NEIGH_AVG	10
/* Maximum number of report history we store */
#define MAX_MEAS_REP		10

/* processed neighbor measurements for one cell */
struct neigh_meas_proc {
	uint16_t arfcn;
	uint8_t bsic;
	uint8_t rxlev[MAX_WIN_NEIGH_AVG];
	unsigned int rxlev_cnt;
	uint8_t last_seen_nr;
};

struct gsm_classmark {
	bool classmark1_set;
	struct gsm48_classmark1 classmark1;
	uint8_t classmark2_len;
	uint8_t classmark2[3];
	uint8_t classmark3_len;
	uint8_t classmark3[14]; /* if cm3 gets extended by spec, it will be truncated */
};

enum subscr_sccp_state {
	SUBSCR_SCCP_ST_NONE,
	SUBSCR_SCCP_ST_WAIT_CONN_CONF,
	SUBSCR_SCCP_ST_CONNECTED
};

enum channel_rate {
	CH_RATE_SDCCH,
	CH_RATE_HALF,
	CH_RATE_FULL,
};

struct channel_mode_and_rate {
	enum gsm48_chan_mode chan_mode;
	enum channel_rate chan_rate;
	uint16_t s15_s0;
};

/* Information retrieved during an Assignment Request from the MSC. This is storage of the Assignment instructions
 * parsed from the Assignment Request message, to pass on until the gscon and assignment FSMs have decided whether an
 * Assignment is actually going to be carried out. Should remain unchanged after initial decoding. */
struct assignment_request {
	bool aoip;

	uint16_t msc_assigned_cic;

	char msc_rtp_addr[INET_ADDRSTRLEN];
	uint16_t msc_rtp_port;
	bool use_osmux;
	uint8_t osmux_cid;

	/* Rate/codec setting in preference order (need at least 1 !) */
	int n_ch_mode_rate;
	struct channel_mode_and_rate ch_mode_rate[3];
};

/* State of an ongoing Assignment, while the assignment_fsm is still busy. This serves as state separation to keep the
 * currently used lchan and gscon unmodified until the outcome of an Assignment is known. If the Assignment fails, this
 * state is simply discarded, and the gscon carries on with the original lchan remaining unchanged. */
struct assignment_fsm_data {
	struct assignment_request req;
	bool requires_voice_stream;

	struct osmo_fsm_inst *fi;
	struct gsm_lchan *new_lchan;

	/* Whether this assignment triggered creation of the MGW endpoint: if the assignment
	 * fails, we will release that again as soon as possible. (If false, the endpoint already
	 * existed before or isn't needed at all.)*/
	struct osmo_mgcpc_ep_ci *created_ci_for_msc;

	enum gsm0808_cause failure_cause;
	enum gsm48_rr_cause rr_cause;

	bool result_rate_ctr_done;
};

enum hodec_id {
	HODEC_NONE,
	HODEC1 = 1,
	HODEC2 = 2,
	HODEC_USER,
	HODEC_REMOTE,
};

/* For example, to count specific kinds of ongoing handovers, it is useful to be able to OR-combine
 * scopes. */
enum handover_scope {
	HO_NO_HANDOVER = 0,
	HO_INTRA_CELL = 0x1,
	HO_INTRA_BSC = 0x2,
	HO_INTER_BSC_OUT = 0x4,
	HO_INTER_BSC_IN = 0x8,
	HO_SCOPE_ALL = 0xffff,
};

extern const struct value_string handover_scope_names[];
inline static const char *handover_scope_name(enum handover_scope val)
{ return get_value_string(handover_scope_names, val); }

struct handover_out_req {
	enum hodec_id from_hodec_id;
	struct gsm_lchan *old_lchan;
	struct neighbor_ident_key target_nik;
	enum gsm_chan_t new_lchan_type; /*< leave GSM_LCHAN_NONE to use same as old_lchan */
};

struct handover_in_req {
	struct gsm0808_channel_type ct;
	struct gsm0808_speech_codec_list scl;
	struct gsm0808_encrypt_info ei;
	struct gsm_classmark classmark;
	/* chosen_encr_alg reflects the encoded value as in RSL_ENC_ALG_A5(a5_numer):
	 * chosen_encr_alg == 1 means A5/0 i.e. no encryption, chosen_encr_alg == 4 means A5/3.
	 * chosen_encr_alg == 0 means no such IE was present. */
	uint8_t chosen_encr_alg;
	struct gsm0808_cell_id cell_id_serving;
	char cell_id_serving_name[64];
	struct gsm0808_cell_id cell_id_target;
	char cell_id_target_name[64];
	uint16_t msc_assigned_cic;
	char msc_assigned_rtp_addr[INET_ADDRSTRLEN];
	uint16_t msc_assigned_rtp_port;
};

struct handover {
	struct osmo_fsm_inst *fi;

	enum hodec_id from_hodec_id;
	enum handover_scope scope;
	enum gsm_chan_t new_lchan_type;
	struct neighbor_ident_key target_cell;

	uint8_t ho_ref;
	struct gsm_bts *new_bts;
	struct gsm_lchan *new_lchan;
	bool async;
	struct handover_in_req inter_bsc_in;
	struct osmo_mgcpc_ep_ci *created_ci_for_msc;
};

/* active radio connection of a mobile subscriber */
struct gsm_subscriber_connection {
	/* global linked list of subscriber_connections */
	struct llist_head entry;

	/* FSM instance to control the subscriber connection state (RTP, A) */
	struct osmo_fsm_inst *fi;

	/* libbsc subscriber information (if available) */
	struct bsc_subscr *bsub;

	/* back pointers */
	struct gsm_network *network;

	/* the primary / currently active lchan to the BTS/subscriber. During Assignment and Handover, separate lchans
	 * are kept in the .assignment or .handover sub-structs, respectively, so that this lchan remains unaffected
	 * until Assignment or Handover have actually succeeded. */
	struct gsm_lchan *lchan;

	/* Only valid during an ongoing Assignment; might be overwritten at any time by a failed Assignment attempt.
	 * Once an Assignment was successful, all relevant state must be copied out of this sub-struct. */
	struct assignment_fsm_data assignment;

	/* handover information, if a handover is pending for this conn. Valid only during an ongoing Handover
	 * operation. If a Handover was successful, all relevant state must be copied out of this sub-struct. */
	struct handover ho;

	/* buffer/cache for classmark of the ME of the subscriber */
	struct gsm_classmark classmark;

	/* Queue DTAP messages during handover/assignment (msgb_enqueue()/msgb_dequeue())*/
	struct llist_head dtap_queue;
	unsigned int dtap_queue_len;

	struct {
		int failures;
		struct penalty_timers *penalty_timers;
	} hodec2;

	/* "Codec List (MSC Preferred)" as received by the BSSAP Assignment Request. 3GPP 48.008
	 * 3.2.2.103 says:
	 *         The "Codec List (MSC Preferred)" shall not include codecs
	 *         that are not supported by the MS.
	 * i.e. by heeding the "Codec list (MSC Preferred)", we inherently heed the MS bearer
	 * capabilities, which the MSC is required to translate into the codec list. */
	struct gsm0808_speech_codec_list codec_list;

	/* flag to prevent multiple simultaneous ciphering commands */
	int ciphering_handled;

	/* state related to welcome USSD */
	uint8_t new_subscriber;

	/* state related to osmo_bsc_filter.c */
	struct bsc_filter_state filter_state;

	/* SCCP connection associatd with this subscriber_connection */
	struct {
		/* for advanced ping/pong */
		int send_ping;

		/* SCCP connection realted */
		struct bsc_msc_data *msc;

		/* Sigtran connection ID */
		int conn_id;
		enum subscr_sccp_state state;
	} sccp;

	/* for audio handling */
	struct {
		uint16_t msc_assigned_cic;

		/* RTP address where the MSC expects us to send the RTP stream coming from the BTS. */
		char msc_assigned_rtp_addr[INET_ADDRSTRLEN];
		uint16_t msc_assigned_rtp_port;

		/* The endpoint at the MGW used to join both BTS and MSC side connections, e.g.
		 * "rtpbridge/23@mgw". */
		struct osmo_mgcpc_ep *mgw_endpoint;

		/* The connection identifier of the osmo_mgcpc_ep used to transceive RTP towards the MSC.
		 * (The BTS side CI is handled by struct gsm_lchan and the lchan_fsm.) */
		struct osmo_mgcpc_ep_ci *mgw_endpoint_ci_msc;
	} user_plane;

	/* LCLS (local call, local switch) related state */
	struct {
		uint8_t global_call_ref[15];
		uint8_t global_call_ref_len; /* length of global_call_ref */
		enum gsm0808_lcls_config config;	/* TS 48.008 3.2.2.116 */
		enum gsm0808_lcls_control control;	/* TS 48.008 3.2.2.117 */
		/* LCLS FSM */
		struct osmo_fsm_inst *fi;
		/* pointer to "other" connection, if Call Leg Relocation was successful */
		struct gsm_subscriber_connection *other;
	} lcls;
};


/* 16 is the max. number of SI2quater messages according to 3GPP TS 44.018 Table 10.5.2.33b.1:
   4-bit index is used (2#1111 = 10#15) */
#define SI2Q_MAX_NUM 16
/* length in bits (for single SI2quater message) */
#define SI2Q_MAX_LEN 160
#define SI2Q_MIN_LEN 18

struct osmo_bsc_data;

struct osmo_bsc_sccp_con;

/* Channel Request reason */
enum gsm_chreq_reason_t {
	GSM_CHREQ_REASON_EMERG,
	GSM_CHREQ_REASON_PAG,
	GSM_CHREQ_REASON_CALL,
	GSM_CHREQ_REASON_LOCATION_UPD,
	GSM_CHREQ_REASON_OTHER,
	GSM_CHREQ_REASON_PDCH,
};

/* lchans 0..3 are SDCCH in combined channel configuration,
   use 4 as magic number for BCCH hack - see osmo-bts-../oml.c:opstart_compl() */
#define CCCH_LCHAN 4

#define TRX_NR_TS	8
#define TS_MAX_LCHAN	8

#define HARDCODED_ARFCN 123
#define HARDCODED_BSIC	0x3f	/* NCC = 7 / BCC = 7 */

/* for multi-drop config */
#define HARDCODED_BTS0_TS	1
#define HARDCODED_BTS1_TS	6
#define HARDCODED_BTS2_TS	11

#define MAX_VERSION_LENGTH 64

enum gsm_hooks {
	GSM_HOOK_NM_SWLOAD,
	GSM_HOOK_RR_PAGING,
	GSM_HOOK_RR_SECURITY,
};

enum bts_gprs_mode {
	BTS_GPRS_NONE = 0,
	BTS_GPRS_GPRS = 1,
	BTS_GPRS_EGPRS = 2,
};

struct gsm_lchan;
struct osmo_rtp_socket;
struct rtp_socket;

/* Network Management State */
struct gsm_nm_state {
	uint8_t operational;
	uint8_t administrative;
	uint8_t availability;
};

struct gsm_abis_mo {
	uint8_t obj_class;
	uint8_t procedure_pending;
	struct abis_om_obj_inst obj_inst;
	const char *name;
	struct gsm_nm_state nm_state;
	struct tlv_parsed *nm_attr;
	struct gsm_bts *bts;
};

/* Ericsson OM2000 Managed Object */
struct abis_om2k_mo {
	uint8_t class;
	uint8_t bts;
	uint8_t assoc_so;
	uint8_t inst;
} __attribute__ ((packed));

struct om2k_mo {
	struct abis_om2k_mo addr;
	struct osmo_fsm_inst *fsm;
};

#define A38_XOR_MIN_KEY_LEN	12
#define A38_XOR_MAX_KEY_LEN	16
#define A38_COMP128_KEY_LEN	16
#define RSL_ENC_ALG_A5(x)	(x+1)
#define MAX_EARFCN_LIST 32

/* is the data link established? who established it? */
#define LCHAN_SAPI_UNUSED	0
#define LCHAN_SAPI_MS		1
#define LCHAN_SAPI_NET		2

/* BTS ONLY */
#define MAX_NUM_UL_MEAS	104
#define LC_UL_M_F_L1_VALID	(1 << 0)
#define LC_UL_M_F_RES_VALID	(1 << 1)

struct bts_ul_meas {
	/* BER in units of 0.01%: 10.000 == 100% ber, 0 == 0% ber */
	uint16_t ber10k;
	/* timing advance offset (in quarter bits) */
	int16_t ta_offs_qbits;
	/* C/I ratio in dB */
	float c_i;
	/* flags */
	uint8_t is_sub:1;
	/* RSSI in dBm * -1 */
	uint8_t inv_rssi;
};

struct bts_codec_conf {
	uint8_t hr;
	uint8_t efr;
	uint8_t amr;
};

struct amr_mode {
	uint8_t mode;
	uint8_t threshold;
	uint8_t hysteresis;
};

struct amr_multirate_conf {
	uint8_t gsm48_ie[2];
	struct amr_mode ms_mode[4];
	struct amr_mode bts_mode[4];
	uint8_t num_modes;
};
/* /BTS ONLY */

enum lchan_csd_mode {
	LCHAN_CSD_M_NT,
	LCHAN_CSD_M_T_1200_75,
	LCHAN_CSD_M_T_600,
	LCHAN_CSD_M_T_1200,
	LCHAN_CSD_M_T_2400,
	LCHAN_CSD_M_T_9600,
	LCHAN_CSD_M_T_14400,
	LCHAN_CSD_M_T_29000,
	LCHAN_CSD_M_T_32000,
};

/* State of the SAPIs in the lchan */
enum lchan_sapi_state {
	LCHAN_SAPI_S_NONE,
	LCHAN_SAPI_S_REQ,
	LCHAN_SAPI_S_ASSIGNED,
	LCHAN_SAPI_S_REL,
	LCHAN_SAPI_S_ERROR,
};

#define MAX_A5_KEY_LEN	(128/8)

struct gsm_encr {
	uint8_t alg_id;
	uint8_t key_len;
	uint8_t key[MAX_A5_KEY_LEN];
};

#define LOGPLCHAN(lchan, ss, level, fmt, args...) \
	LOGP(ss, level, "%s (ss=%d,%s) (%s) " fmt, \
	     lchan ? gsm_ts_and_pchan_name(lchan->ts) : "-", \
	     lchan ? lchan->nr : 0, \
	     lchan ? gsm_lchant_name(lchan->type) : "-", \
	     bsc_subscr_name(lchan && lchan->conn ? lchan->conn->bsub : NULL), \
	     ## args)

/* Iterate lchans that have an FSM allocated based based on explicit pchan kind
 * (GSM_PCHAN_* constant).
 * Remark: PDCH related lchans are not handled in BSC but in PCU, so trying to
 * 	  iterate through GSM_PCHAN_PDCH is considered a void loop.
 */
#define ts_as_pchan_for_each_lchan(lchan, ts, as_pchan) \
	for (lchan = (ts)->lchan; \
	     ((lchan - (ts)->lchan) < ARRAY_SIZE((ts)->lchan)) \
	     && lchan->fi \
	     && lchan->nr < pchan_subslots(as_pchan); \
	     lchan++)

/* Iterate lchans that have an FSM allocated based on current PCHAN
 * mode set in \ref ts.
 * usage:
 * struct gsm_lchan *lchan;
 * struct gsm_bts_trx_ts *ts = get_some_timeslot();
 * ts_for_each_lchan(lchan, ts) {
 * 	LOGPLCHAN(DMAIN, LOGL_DEBUG, "hello world\n");
 * }
 */
#define ts_for_each_lchan(lchan, ts) ts_as_pchan_for_each_lchan(lchan, ts, (ts)->pchan_is)

/* Iterate over all possible lchans available that have an FSM allocated based
 * on PCHAN \ref ts (dynamic) configuration.
 * Iterate all lchan instances set up by this \ref ts type, including those
 * lchans currently disabled or in process of being enabled (e.g. due to dynamic
 * timeslot in switchover). Compare ts_for_each_lchan(), which iterates only the
 * enabled lchans.
 * For example, it is useful in case dynamic timeslot \ref ts is in process of
 * switching from configuration PDCH (no lchans) to TCH_F (1 lchan), where
 * pchan_is is still set to PDCH but \ref ts may contain already an \ref lchan
 * of type TCH_F which initiated the request to switch the \ts configuration.
 */
#define ts_for_each_potential_lchan(lchan, ts) ts_as_pchan_for_each_lchan(lchan, ts, (ts)->pchan_on_init)

enum lchan_activate_mode {
	FOR_NONE,
	FOR_MS_CHANNEL_REQUEST,
	FOR_ASSIGNMENT,
	FOR_HANDOVER,
	FOR_VTY,
};

extern const struct value_string lchan_activate_mode_names[];
static inline const char *lchan_activate_mode_name(enum lchan_activate_mode activ_for)
{ return get_value_string(lchan_activate_mode_names, activ_for); }

struct lchan_activate_info {
	enum lchan_activate_mode activ_for;
	struct gsm_subscriber_connection *for_conn;
	/* This always is for a specific lchan, so its lchan->type indicates full or half rate.
	 * When a dyn TS was selected, the lchan->type has been set to the desired rate. */
	enum gsm48_chan_mode chan_mode;
	struct gsm_encr encr;
	/* AMR config */
	uint16_t s15_s0;
	bool requires_voice_stream;
	bool wait_before_switching_rtp; /*< true = requires LCHAN_EV_READY_TO_SWITCH_RTP */
	uint16_t msc_assigned_cic;
	/* During intra-BSC handover, we keep the MGW endpoint intact and just re-route to the new lchan. This
	 * activate_info is for the new lchan, the re_use_mgw_endpoint_from_lchan points at the old lchan. */
	struct gsm_lchan *re_use_mgw_endpoint_from_lchan;
};

struct gsm_lchan {
	/* The TS that we're part of */
	struct gsm_bts_trx_ts *ts;
	/* The logical subslot number in the TS */
	uint8_t nr;
	char *name;

	char *last_error;

	struct osmo_fsm_inst *fi;
	struct osmo_fsm_inst *fi_rtp;
	struct osmo_mgcpc_ep_ci *mgw_endpoint_ci_bts;

	struct {
		struct lchan_activate_info info;
		bool activ_ack; /*< true as soon as RSL Chan Activ Ack is received */
		bool immediate_assignment_sent;
		/*! This flag ensures that when an lchan activation has succeeded, and we have already
		 * sent ACKs like Immediate Assignment or BSSMAP Assignment Complete, and if other errors
		 * occur later, e.g. during release, that we don't send a NACK out of context. */
		bool concluded;
		enum gsm0808_cause gsm0808_error_cause;
	} activate;

	struct {
		/* If an event to release the lchan comes in while still waiting for responses, just mark this
		 * flag, so that the lchan will gracefully release at the next sensible junction. */
		bool requested;
		bool do_rr_release;

		/* There is an RSL error cause of value 0, so we need a separate flag. */
		bool in_error;
		/* RSL error code, RSL_ERR_* */
		uint8_t rsl_error_cause;

		/* If a release event is being handled, ignore other ricocheting release events until that
		 * release handling has concluded. */
		bool in_release_handler;

		/* is this release at the end of a CSFB call? */
		bool is_csfb;
	} release;

	/* The logical channel type */
	enum gsm_chan_t type;
	/* RSL channel mode */
	enum rsl_cmod_spd rsl_cmode;
	/* If TCH, traffic channel mode */
	enum gsm48_chan_mode tch_mode;
	enum lchan_csd_mode csd_mode;
	/* Power levels for MS and BTS */
	uint8_t bs_power;
	uint8_t ms_power;
	/* Encryption information */
	struct gsm_encr encr;

	/* AMR bits */
	uint8_t mr_ms_lv[7];
	uint8_t mr_bts_lv[7];
	/* AMR bits were based on these rate bits: */
	uint16_t s15_s0;

	/* Established data link layer services */
	uint8_t sapis[8];

	struct {
		uint32_t bound_ip; /*< where the BTS receives RTP */
		uint16_t bound_port;
		uint32_t connect_ip; /*< where the BTS sends RTP to (MGW) */
		uint16_t connect_port;
		uint16_t conn_id;
		uint8_t rtp_payload;
		uint8_t rtp_payload2;
		uint8_t speech_mode;

		/* info we need to postpone the AoIP
		 * assignment completed message */
		struct {
			uint8_t rr_cause;
			bool valid;
		} ass_compl;
	} abis_ip;

	uint8_t rqd_ta;

	/* table of neighbor cell measurements */
	struct neigh_meas_proc neigh_meas[MAX_NEIGH_MEAS];

	/* cache of last measurement reports on this lchan */
	struct gsm_meas_rep meas_rep[MAX_MEAS_REP];
	int meas_rep_idx;
	int meas_rep_count;
	uint8_t meas_rep_last_seen_nr;

	/* GSM Random Access data */
	/* TODO: don't allocate this, rather keep an "is_present" flag */
	struct gsm48_req_ref *rqd_ref;

	struct gsm_subscriber_connection *conn;

	/* Depending on the preferences that where submitted together with
	 * the assignment and the current channel load, the BSC has to select
	 * one of the offered codec/rates. The final selection by the BSC is
	 * stored here and is used when sending the assignment complete or
	 * when performing a handover procedure. */
	struct channel_mode_and_rate ch_mode_rate;
};

/* One Timeslot in a TRX */
struct gsm_bts_trx_ts {
	struct gsm_bts_trx *trx;
	/* number of this timeslot at the TRX */
	uint8_t nr;

	struct osmo_fsm_inst *fi;
	char *last_errmsg;

	/* vty phys_chan_config setting, not necessarily in effect in case it was changed in the telnet
	 * vty after OML activation. Gets written on vty 'write file'. */
	enum gsm_phys_chan_config pchan_from_config;
	/* When the timeslot OML is established, pchan_from_config is copied here. This is the pchan
	 * currently in effect; for dynamic ts, this is the dyn kind (GSM_PCHAN_TCH_F_TCH_H_PDCH or
	 * GSM_PCHAN_TCH_F_PDCH) and does not show the pchan type currently active. */
	enum gsm_phys_chan_config pchan_on_init;
	/* This is the *actual* pchan type currently active. For dynamic timeslots, this reflects either
	 * GSM_PCHAN_NONE or one of the standard GSM_PCHAN_TCH_F, GSM_PCHAN_TCH_H, GSM_PCHAN_PDCH.
	 * Callers can use this transparently without being aware of dyn ts. */
	enum gsm_phys_chan_config pchan_is;

	/* After a PDCH ACT NACK, we shall not infinitely loop to try and ACT again.
	 * Also marks a timeslot where PDCH was deactivated by VTY. This is cleared whenever a timeslot
	 * enters IN_USE state, i.e. after each TCH use we try to PDCH ACT once again. */
	bool pdch_act_allowed;

	/* Whether TS_EV_OML_READY was received */
	bool is_oml_ready;
	/* Whether TS_EV_RSL_READY was received */
	bool is_rsl_ready;

	struct gsm_abis_mo mo;
	struct tlv_parsed nm_attr;
	uint8_t nm_chan_comb;
	int tsc;		/* -1 == use BTS TSC */

	struct {
		/* Parameters below are configured by VTY */
		int enabled;
		uint8_t maio;
		uint8_t hsn;
		struct bitvec arfcns;
		uint8_t arfcns_data[1024/8];
		/* This is the pre-computed MA for channel assignments */
		struct bitvec ma;
		uint8_t ma_len;	/* part of ma_data that is used */
		uint8_t ma_data[8];	/* 10.5.2.21: max 8 bytes value part */
	} hopping;

	/* To which E1 subslot are we connected */
	struct gsm_e1_subslot e1_link;

	union {
		struct {
			struct om2k_mo om2k_mo;
		} rbs2000;
	};

	struct gsm_lchan lchan[TS_MAX_LCHAN];
};

/* One TRX in a BTS */
struct gsm_bts_trx {
	/* list header in bts->trx_list */
	struct llist_head list;

	struct gsm_bts *bts;
	/* number of this TRX in the BTS */
	uint8_t nr;
	/* human readable name / description */
	char *description;
	/* how do we talk RSL with this TRX? */
	struct gsm_e1_subslot rsl_e1_link;
	uint8_t rsl_tei;
	struct e1inp_sign_link *rsl_link;

	/* Timeout for initiating the RSL connection. */
	struct osmo_timer_list rsl_connect_timeout;

	/* Some BTS (specifically Ericsson RBS) have a per-TRX OML Link */
	struct e1inp_sign_link *oml_link;

	struct gsm_abis_mo mo;
	struct tlv_parsed nm_attr;
	struct {
		struct gsm_abis_mo mo;
	} bb_transc;

	uint16_t arfcn;
	int nominal_power;		/* in dBm */
	unsigned int max_power_red;	/* in actual dB */

	union {
		struct {
			struct {
				struct gsm_abis_mo mo;
			} bbsig;
			struct {
				struct gsm_abis_mo mo;
			} pa;
		} bs11;
		struct {
			unsigned int test_state;
			uint8_t test_nr;
			struct rxlev_stats rxlev_stat;
		} ipaccess;
		struct {
			struct {
				struct om2k_mo om2k_mo;
			} trxc;
			struct {
				struct om2k_mo om2k_mo;
			} rx;
			struct {
				struct om2k_mo om2k_mo;
			} tx;
		} rbs2000;
	};
	struct gsm_bts_trx_ts ts[TRX_NR_TS];
};

#define GSM_BTS_SI2Q(bts, i)   (struct gsm48_system_information_type_2quater *)((bts)->si_buf[SYSINFO_TYPE_2quater][i])
#define GSM_BTS_HAS_SI(bts, i) ((bts)->si_valid & (1 << i))
#define GSM_BTS_SI(bts, i)     (void *)((bts)->si_buf[i][0])
#define GSM_LCHAN_SI(lchan, i) (void *)((lchan)->si.buf[i][0])

enum gsm_bts_type {
	GSM_BTS_TYPE_UNKNOWN,
	GSM_BTS_TYPE_BS11,
	GSM_BTS_TYPE_NANOBTS,
	GSM_BTS_TYPE_RBS2000,
	GSM_BTS_TYPE_NOKIA_SITE,
	GSM_BTS_TYPE_OSMOBTS,
	_NUM_GSM_BTS_TYPE
};

enum gsm_bts_type_variant {
	BTS_UNKNOWN,
	BTS_OSMO_LITECELL15,
	BTS_OSMO_OCTPHY,
	BTS_OSMO_SYSMO,
	BTS_OSMO_TRX,
	_NUM_BTS_VARIANT
};

/* Used by OML layer for BTS Attribute reporting */
enum bts_attribute {
	BTS_TYPE_VARIANT,
	BTS_SUB_MODEL,
	TRX_PHY_VERSION,
};

struct vty;

struct gsm_bts_model {
	struct llist_head list;

	enum gsm_bts_type type;
	enum gsm_bts_type_variant variant;
	const char *name;

	bool started;
	int (*start)(struct gsm_network *net);
	int (*oml_rcvmsg)(struct msgb *msg);
	char * (*oml_status)(const struct gsm_bts *bts);

	void (*e1line_bind_ops)(struct e1inp_line *line);

	void (*config_write_bts)(struct vty *vty, struct gsm_bts *bts);
	void (*config_write_trx)(struct vty *vty, struct gsm_bts_trx *trx);
	void (*config_write_ts)(struct vty *vty, struct gsm_bts_trx_ts *ts);

	/* Should SI2bis and SI2ter be disabled by default on this BTS model? */
	bool force_combined_si;

	struct tlv_definition nm_att_tlvdef;

	/* features of a given BTS model set via gsm_bts_model_register() locally */
	struct bitvec features;
	uint8_t _features_data[MAX_BTS_FEATURES/8];
};



/*
 * This keeps track of the paging status of one BTS. It
 * includes a number of pending requests, a back pointer
 * to the gsm_bts, a timer and some more state.
 */
struct gsm_bts_paging_state {
	/* pending requests */
	struct llist_head pending_requests;
	struct gsm_bts *bts;

	struct osmo_timer_list work_timer;
	struct osmo_timer_list credit_timer;

	/* free chans needed */
	int free_chans_need;

	/* load */
	uint16_t available_slots;
};

struct gsm_envabtse {
	struct gsm_abis_mo mo;
};

struct gsm_bts_gprs_nsvc {
	struct gsm_bts *bts;
	/* data read via VTY config file, to configure the BTS
	 * via OML from BSC */
	int id;
	uint16_t nsvci;
	uint16_t local_port;	/* on the BTS */
	uint16_t remote_port;	/* on the SGSN */
	uint32_t remote_ip;	/* on the SGSN */

	struct gsm_abis_mo mo;
};

enum gprs_rlc_par {
	RLC_T3142,
	RLC_T3169,
	RLC_T3191,
	RLC_T3193,
	RLC_T3195,
	RLC_N3101,
	RLC_N3103,
	RLC_N3105,
	CV_COUNTDOWN,
	T_DL_TBF_EXT,	/* ms */
	T_UL_TBF_EXT,	/* ms */
	_NUM_RLC_PAR
};

enum gprs_cs {
	GPRS_CS1,
	GPRS_CS2,
	GPRS_CS3,
	GPRS_CS4,
	GPRS_MCS1,
	GPRS_MCS2,
	GPRS_MCS3,
	GPRS_MCS4,
	GPRS_MCS5,
	GPRS_MCS6,
	GPRS_MCS7,
	GPRS_MCS8,
	GPRS_MCS9,
	_NUM_GRPS_CS
};

struct gprs_rlc_cfg {
	uint16_t parameter[_NUM_RLC_PAR];
	struct {
		uint16_t repeat_time; /* ms */
		uint8_t repeat_count;
	} paging;
	uint32_t cs_mask; /* bitmask of gprs_cs */
	uint8_t initial_cs;
	uint8_t initial_mcs;
};


enum neigh_list_manual_mode {
	NL_MODE_AUTOMATIC = 0,
	NL_MODE_MANUAL = 1,
	NL_MODE_MANUAL_SI5SEP = 2, /* SI2 and SI5 have separate neighbor lists */
};

enum bts_loc_fix {
	BTS_LOC_FIX_INVALID = 0,
	BTS_LOC_FIX_2D = 1,
	BTS_LOC_FIX_3D = 2,
};

extern const struct value_string bts_loc_fix_names[];

struct bts_location {
	struct llist_head list;
	time_t tstamp;
	enum bts_loc_fix valid;
	double lat;
	double lon;
	double height;
};

/* Channel load counter */
struct load_counter {
	unsigned int total;
	unsigned int used;
};

/* Useful to track N-N relations between BTS, for example neighbors. */
struct gsm_bts_ref {
	struct llist_head entry;
	struct gsm_bts *bts;
};

/* One BTS */
struct gsm_bts {
	/* list header in net->bts_list */
	struct llist_head list;

	/* Geographical location of the BTS */
	struct llist_head loc_list;

	/* number of ths BTS in network */
	uint8_t nr;
	/* human readable name / description */
	char *description;
	/* Cell Identity */
	uint16_t cell_identity;
	/* location area code of this BTS */
	uint16_t location_area_code;
	/* Base Station Identification Code (BSIC), lower 3 bits is BCC,
	 * which is used as TSC for the CCCH */
	uint8_t bsic;
	/* type of BTS */
	enum gsm_bts_type type;
	enum gsm_bts_type_variant variant;
	struct gsm_bts_model *model;
	enum gsm_band band;
	char version[MAX_VERSION_LENGTH];
	char sub_model[MAX_VERSION_LENGTH];

	/* features of a given BTS set/reported via OML */
	struct bitvec features;
	uint8_t _features_data[MAX_BTS_FEATURES/8];

	/* Connected PCU version (if any) */
	char pcu_version[MAX_VERSION_LENGTH];

	/* maximum Tx power that the MS is permitted to use in this cell */
	int ms_max_power;

	/* how do we talk OML with this TRX? */
	struct gsm_e1_subslot oml_e1_link;
	uint8_t oml_tei;
	struct e1inp_sign_link *oml_link;
	/* Timer to use for deferred drop of OML link, see \ref ipaccess_drop_oml_deferred */
	struct osmo_timer_list oml_drop_link_timer;
	/* when OML link was established */
	time_t uptime;

	/* Abis network management O&M handle */
	struct abis_nm_h *nmh;

	struct gsm_abis_mo mo;

	/* number of this BTS on given E1 link */
	uint8_t bts_nr;

	/* DTX features of this BTS */
	enum gsm48_dtx_mode dtxu;
	bool dtxd;

	/* paging state and control */
	struct gsm_bts_paging_state paging;

	/* CCCH is on C0 */
	struct gsm_bts_trx *c0;

	struct {
		struct gsm_abis_mo mo;
	} site_mgr;

	/* bitmask of all SI that are present/valid in si_buf */
	uint32_t si_valid;
	/* 3GPP TS 44.018 Table 10.5.2.33b.1 INDEX and COUNT for SI2quater */
	uint8_t si2q_index; /* distinguish individual SI2quater messages */
	uint8_t si2q_count; /* si2q_index for the last (highest indexed) individual SI2quater message */
	/* buffers where we put the pre-computed SI */
	sysinfo_buf_t si_buf[_MAX_SYSINFO_TYPE][SI2Q_MAX_NUM];
	/* offsets used while generating SI2quater */
	size_t e_offset;
	size_t u_offset;
	/* 3GPP TS 08.58 §8.5.1 BCCH INFORMATION. Some nanoBTS fail upon
	 * receival of empty SI disabling unsupported SI. see OS#3707. */
	bool si_unused_send_empty;

	/* ip.accesss Unit ID's have Site/BTS/TRX layout */
	union {
		struct {
			uint16_t site_id;
			uint16_t bts_id;
			uint32_t flags;
			uint32_t rsl_ip;
		} ip_access;
		struct {
			struct {
				struct gsm_abis_mo mo;
			} cclk;
			struct {
				struct gsm_abis_mo mo;
			} rack;
			struct gsm_envabtse envabtse[4];
		} bs11;
		struct {
			struct {
				struct om2k_mo om2k_mo;
				struct gsm_abis_mo mo;
				struct llist_head conn_groups;
			} cf;
			struct {
				struct om2k_mo om2k_mo;
				struct gsm_abis_mo mo;
				struct llist_head conn_groups;
			} is;
			struct {
				struct om2k_mo om2k_mo;
				struct gsm_abis_mo mo;
				struct llist_head conn_groups;
			} con;
			struct {
				struct om2k_mo om2k_mo;
				struct gsm_abis_mo mo;
			} dp;
			struct {
				struct om2k_mo om2k_mo;
				struct gsm_abis_mo mo;
			} tf;
			uint32_t use_superchannel:1;
		} rbs2000;
		struct {
			uint8_t bts_type;
			unsigned int configured:1,
				skip_reset:1,
				no_loc_rel_cnf:1,
				bts_reset_timer_cnf,
				did_reset:1,
				wait_reset:1;
			struct osmo_timer_list reset_timer;
		} nokia;
	};

	/* Not entirely sure how ip.access specific this is */
	struct {
		uint8_t supports_egprs_11bit_rach;
		enum bts_gprs_mode mode;
		struct {
			struct gsm_abis_mo mo;
			uint16_t nsei;
			uint8_t timer[7];
		} nse;
		struct {
			struct gsm_abis_mo mo;
			uint16_t bvci;
			uint8_t timer[11];
			struct gprs_rlc_cfg rlc_cfg;
		} cell;
		struct gsm_bts_gprs_nsvc nsvc[2];
		uint8_t rac;
		uint8_t net_ctrl_ord;
		bool ctrl_ack_type_use_block;
	} gprs;

	/* threshold (in percent) when BTS shall send CCCH LOAD IND */
	int ccch_load_ind_thresh;

	/* RACH NM values */
	int rach_b_thresh;
	int rach_ldavg_slots;

	/* transceivers */
	int num_trx;
	struct llist_head trx_list;

	/* SI related items */
	int force_combined_si;
	bool force_combined_si_set;
	int bcch_change_mark;

	/* Abis NM queue */
	struct llist_head abis_queue;
	int abis_nm_pend;

	struct gsm_network *network;

	/* should the channel allocator allocate channels from high TRX to TRX0,
	 * rather than starting from TRX0 and go upwards? */
	int chan_alloc_reverse;

	enum neigh_list_manual_mode neigh_list_manual_mode;
	/* parameters from which we build SYSTEM INFORMATION */
	struct {
		struct gsm48_rach_control rach_control;
		uint8_t ncc_permitted;
		struct gsm48_cell_sel_par cell_sel_par;
		struct gsm48_si_selection_params cell_ro_sel_par; /* rest octet */
		struct gsm48_cell_options cell_options;
		struct gsm48_control_channel_descr chan_desc;
		struct bitvec neigh_list;
		struct bitvec cell_alloc;
		struct bitvec si5_neigh_list;
		struct osmo_earfcn_si2q si2quater_neigh_list;
		size_t uarfcn_length; /* index for uarfcn and scramble lists */
		struct {
			/* bitmask large enough for all possible ARFCN's */
			uint8_t neigh_list[1024/8];
			uint8_t cell_alloc[1024/8];
			/* If the user wants a different neighbor list in SI5 than in SI2 */
			uint8_t si5_neigh_list[1024/8];
			uint8_t meas_bw_list[MAX_EARFCN_LIST];
			uint16_t earfcn_list[MAX_EARFCN_LIST];
			uint16_t uarfcn_list[MAX_EARFCN_LIST];
			uint16_t scramble_list[MAX_EARFCN_LIST];
		} data;
	} si_common;
	bool early_classmark_allowed;
	bool early_classmark_allowed_3g;
	/* for testing only: Have an infinitely long radio link timeout */
	bool infinite_radio_link_timeout;

	/* do we use static (user-defined) system information messages? (bitmask) */
	uint32_t si_mode_static;

	/* access control class ramping */
	struct acc_ramp acc_ramp;

	/* exclude the BTS from the global RF Lock handling */
	int excl_from_rf_lock;

	/* supported codecs beside FR */
	struct bts_codec_conf codec;

	/* BTS dependencies bit field */
	uint32_t depends_on[256/(8*4)];

	/* full and half rate multirate config */
	struct amr_multirate_conf mr_full;
	struct amr_multirate_conf mr_half;

	/* PCU socket state */
	char *pcu_sock_path;
	struct pcu_sock_state *pcu_state;

	struct rate_ctr_group *bts_ctrs;
	struct osmo_stat_item_group *bts_statg;

	struct handover_cfg *ho;

	/* A list of struct gsm_bts_ref, indicating neighbors of this BTS.
	 * When the si_common neigh_list is in automatic mode, it is populated from this list as well as
	 * gsm_network->neighbor_bss_cells. */
	struct llist_head local_neighbors;

	/* BTS-specific overrides for timer values from struct gsm_network. */
	uint8_t T3122;	/* ASSIGMENT REJECT wait indication */
	bool T3113_dynamic; /* Calculate T3113 timeout dynamically based on BTS channel config and load */

	/* Periodic channel load measurements are used to maintain T3122. */
	struct load_counter chan_load_samples[7];
	int chan_load_samples_idx;
	uint8_t chan_load_avg; /* current channel load average in percent (0 - 100). */
};

/* One rejected BTS */
struct gsm_bts_rejected {
	/* list header in net->bts_rejected */
	struct llist_head list;

	uint16_t site_id;
	uint16_t bts_id;
	char ip[INET6_ADDRSTRLEN];
	time_t time;
};

struct gsm_network *gsm_network_init(void *ctx);

struct gsm_bts *gsm_bts_alloc(struct gsm_network *net, uint8_t bts_num);
struct gsm_bts *gsm_bts_num(const struct gsm_network *net, int num);
bool gsm_bts_matches_lai(const struct gsm_bts *bts, const struct osmo_location_area_id *lai);
bool gsm_bts_matches_cell_id(const struct gsm_bts *bts, const struct gsm0808_cell_id *cell_id);
struct gsm_bts *gsm_bts_by_cell_id(const struct gsm_network *net,
				   const struct gsm0808_cell_id *cell_id,
				   int match_idx);
int gsm_bts_local_neighbor_add(struct gsm_bts *bts, struct gsm_bts *neighbor);
int gsm_bts_local_neighbor_del(struct gsm_bts *bts, const struct gsm_bts *neighbor);

struct gsm_bts_trx *gsm_bts_trx_alloc(struct gsm_bts *bts);
struct gsm_bts_trx *gsm_bts_trx_num(const struct gsm_bts *bts, int num);

enum gsm_bts_type str2btstype(const char *arg);
const char *btstype2str(enum gsm_bts_type type);

enum bts_attribute str2btsattr(const char *s);
const char *btsatttr2str(enum bts_attribute v);

enum gsm_bts_type_variant str2btsvariant(const char *arg);
const char *btsvariant2str(enum gsm_bts_type_variant v);

extern const struct value_string gsm_chreq_descs[];
extern const struct value_string gsm_pchant_names[];
extern const struct value_string gsm_pchant_descs[];
extern const struct value_string gsm_pchan_ids[];
const char *gsm_pchan_name(enum gsm_phys_chan_config c);
static inline const char *gsm_pchan_id(enum gsm_phys_chan_config c)
{ return get_value_string(gsm_pchan_ids, c); }
enum gsm_phys_chan_config gsm_pchan_parse(const char *name);
const char *gsm_lchant_name(enum gsm_chan_t c);
const char *gsm_chreq_name(enum gsm_chreq_reason_t c);
char *gsm_bts_name(const struct gsm_bts *bts);
char *gsm_trx_name(const struct gsm_bts_trx *trx);
char *gsm_ts_name(const struct gsm_bts_trx_ts *ts);
char *gsm_ts_and_pchan_name(const struct gsm_bts_trx_ts *ts);
char *gsm_lchan_name_compute(const struct gsm_lchan *lchan);

static inline char *gsm_lchan_name(const struct gsm_lchan *lchan)
{
	return lchan->name;
}

void gsm_abis_mo_reset(struct gsm_abis_mo *mo);

struct gsm_nm_state *
gsm_objclass2nmstate(struct gsm_bts *bts, uint8_t obj_class,
		 const struct abis_om_obj_inst *obj_inst);
void *
gsm_objclass2obj(struct gsm_bts *bts, uint8_t obj_class,
	     const struct abis_om_obj_inst *obj_inst);

/* reset the state of all MO in the BTS */
void gsm_bts_mo_reset(struct gsm_bts *bts);

uint8_t gsm_pchan2chan_nr(enum gsm_phys_chan_config pchan,
			  uint8_t ts_nr, uint8_t lchan_nr);
uint8_t gsm_lchan2chan_nr(const struct gsm_lchan *lchan);
uint8_t gsm_lchan_as_pchan2chan_nr(const struct gsm_lchan *lchan,
				   enum gsm_phys_chan_config as_pchan);

void gsm48_lchan2chan_desc(struct gsm48_chan_desc *cd,
			   const struct gsm_lchan *lchan);
void gsm48_lchan2chan_desc_as_configured(struct gsm48_chan_desc *cd, const struct gsm_lchan *lchan);

/* return the gsm_lchan for the CBCH (if it exists at all) */
struct gsm_lchan *gsm_bts_get_cbch(struct gsm_bts *bts);

/*
 * help with parsing regexps
 */
int gsm_parse_reg(void *ctx, regex_t *reg, char **str,
		int argc, const char **argv) __attribute__ ((warn_unused_result));

static inline uint8_t gsm_ts_tsc(const struct gsm_bts_trx_ts *ts)
{
	if (ts->tsc != -1)
		return ts->tsc;
	else
		return ts->trx->bts->bsic & 7;
}

struct gsm_lchan *rsl_lchan_lookup(struct gsm_bts_trx *trx, uint8_t chan_nr,
				   int *rc);

enum gsm_phys_chan_config ts_pchan(struct gsm_bts_trx_ts *ts);
uint8_t pchan_subslots(enum gsm_phys_chan_config pchan);
bool ts_is_tch(struct gsm_bts_trx_ts *ts);


static inline struct gsm_bts *conn_get_bts(struct gsm_subscriber_connection *conn) {
	OSMO_ASSERT(conn->lchan);
	return conn->lchan->ts->trx->bts;
}

enum {
	BTS_CTR_CHREQ_TOTAL,
	BTS_CTR_CHREQ_NO_CHANNEL,
	BTS_CTR_CHAN_RF_FAIL,
	BTS_CTR_CHAN_RLL_ERR,
	BTS_CTR_BTS_OML_FAIL,
	BTS_CTR_BTS_RSL_FAIL,
	BTS_CTR_CODEC_AMR_F,
	BTS_CTR_CODEC_AMR_H,
	BTS_CTR_CODEC_EFR,
	BTS_CTR_CODEC_V1_FR,
	BTS_CTR_CODEC_V1_HR,
	BTS_CTR_PAGING_ATTEMPTED,
	BTS_CTR_PAGING_ALREADY,
	BTS_CTR_PAGING_RESPONDED,
	BTS_CTR_PAGING_EXPIRED,
	BTS_CTR_CHAN_ACT_TOTAL,
	BTS_CTR_CHAN_ACT_NACK,
	BTS_CTR_RSL_UNKNOWN,
	BTS_CTR_RSL_IPA_NACK,
	BTS_CTR_MODE_MODIFY_NACK,
};

static const struct rate_ctr_desc bts_ctr_description[] = {
	[BTS_CTR_CHREQ_TOTAL] = 		{"chreq:total", "Received channel requests."},
	[BTS_CTR_CHREQ_NO_CHANNEL] = 		{"chreq:no_channel", "Sent to MS no channel available."},
	[BTS_CTR_CHAN_RF_FAIL] = 		{"chan:rf_fail", "Received a RF failure indication from BTS."},
	[BTS_CTR_CHAN_RLL_ERR] = 		{"chan:rll_err", "Received a RLL failure with T200 cause from BTS."},
	[BTS_CTR_BTS_OML_FAIL] = 		{"oml_fail", "Received a TEI down on a OML link."},
	[BTS_CTR_BTS_RSL_FAIL] = 		{"rsl_fail", "Received a TEI down on a OML link."},
	[BTS_CTR_CODEC_AMR_F] =			{"codec:amr_f", "Count the usage of AMR/F codec by channel mode requested."},
	[BTS_CTR_CODEC_AMR_H] =			{"codec:amr_h", "Count the usage of AMR/H codec by channel mode requested."},
	[BTS_CTR_CODEC_EFR] = 			{"codec:efr", "Count the usage of EFR codec by channel mode requested."},
	[BTS_CTR_CODEC_V1_FR] =			{"codec:fr", "Count the usage of FR codec by channel mode requested."},
	[BTS_CTR_CODEC_V1_HR] =			{"codec:hr", "Count the usage of HR codec by channel mode requested."},

	[BTS_CTR_PAGING_ATTEMPTED] = 		{"paging:attempted", "Paging attempts for a subscriber."},
	[BTS_CTR_PAGING_ALREADY] = 		{"paging:already", "Paging attempts ignored as subsciber was already being paged."},
	[BTS_CTR_PAGING_RESPONDED] = 		{"paging:responded", "Paging attempts with successful paging response."},
	[BTS_CTR_PAGING_EXPIRED] = 		{"paging:expired", "Paging Request expired because of timeout T3113."},
	[BTS_CTR_CHAN_ACT_TOTAL] =		{"chan_act:total", "Total number of Channel Activations."},
	[BTS_CTR_CHAN_ACT_NACK] =		{"chan_act:nack", "Number of Channel Activations that the BTS NACKed"},
	[BTS_CTR_RSL_UNKNOWN] =			{"rsl:unknown", "Number of unknown/unsupported RSL messages received from BTS"},
	[BTS_CTR_RSL_IPA_NACK] =		{"rsl:ipa_nack", "Number of IPA (RTP/dyn-PDCH) related NACKs received from BTS"},
	[BTS_CTR_MODE_MODIFY_NACK] =		{"chan:mode_modify_nack", "Number of Channel Mode Modify NACKs received from BTS"},
};

static const struct rate_ctr_group_desc bts_ctrg_desc = {
	"bts",
	"base transceiver station",
	OSMO_STATS_CLASS_GLOBAL,
	ARRAY_SIZE(bts_ctr_description),
	bts_ctr_description,
};

enum {
	BTS_STAT_CHAN_LOAD_AVERAGE,
	BTS_STAT_T3122,
	BTS_STAT_RACH_BUSY,
	BTS_STAT_RACH_ACCESS,
};

enum {
	BSC_CTR_ASSIGNMENT_ATTEMPTED,
	BSC_CTR_ASSIGNMENT_COMPLETED,
	BSC_CTR_ASSIGNMENT_STOPPED,
	BSC_CTR_ASSIGNMENT_NO_CHANNEL,
	BSC_CTR_ASSIGNMENT_TIMEOUT,
	BSC_CTR_ASSIGNMENT_FAILED,
	BSC_CTR_ASSIGNMENT_ERROR,
	BSC_CTR_HANDOVER_ATTEMPTED,
	BSC_CTR_HANDOVER_COMPLETED,
	BSC_CTR_HANDOVER_STOPPED,
	BSC_CTR_HANDOVER_NO_CHANNEL,
	BSC_CTR_HANDOVER_TIMEOUT,
	BSC_CTR_HANDOVER_FAILED,
	BSC_CTR_HANDOVER_ERROR,
	BSC_CTR_INTER_BSC_HO_OUT_ATTEMPTED,
	BSC_CTR_INTER_BSC_HO_OUT_COMPLETED,
	BSC_CTR_INTER_BSC_HO_OUT_STOPPED,
	BSC_CTR_INTER_BSC_HO_OUT_TIMEOUT,
	BSC_CTR_INTER_BSC_HO_OUT_ERROR,
	BSC_CTR_INTER_BSC_HO_IN_ATTEMPTED,
	BSC_CTR_INTER_BSC_HO_IN_COMPLETED,
	BSC_CTR_INTER_BSC_HO_IN_STOPPED,
	BSC_CTR_INTER_BSC_HO_IN_NO_CHANNEL,
	BSC_CTR_INTER_BSC_HO_IN_FAILED,
	BSC_CTR_INTER_BSC_HO_IN_TIMEOUT,
	BSC_CTR_INTER_BSC_HO_IN_ERROR,
	BSC_CTR_PAGING_ATTEMPTED,
	BSC_CTR_PAGING_DETACHED,
	BSC_CTR_PAGING_RESPONDED,
	BSC_CTR_UNKNOWN_UNIT_ID,
};

static const struct rate_ctr_desc bsc_ctr_description[] = {
	[BSC_CTR_ASSIGNMENT_ATTEMPTED] =	{"assignment:attempted", "Assignment attempts."},
	[BSC_CTR_ASSIGNMENT_COMPLETED] =	{"assignment:completed", "Assignment completed."},
	[BSC_CTR_ASSIGNMENT_STOPPED] = 		{"assignment:stopped", "Connection ended during Assignment."},
	[BSC_CTR_ASSIGNMENT_NO_CHANNEL] = 	{"assignment:no_channel", "Failure to allocate lchan for Assignment."},
	[BSC_CTR_ASSIGNMENT_TIMEOUT] = 		{"assignment:timeout", "Assignment timed out."},
	[BSC_CTR_ASSIGNMENT_FAILED] = 		{"assignment:failed", "Received Assignment Failure message."},
	[BSC_CTR_ASSIGNMENT_ERROR] = 		{"assignment:error", "Assigment failed for other reason."},

	[BSC_CTR_HANDOVER_ATTEMPTED] = 		{"handover:attempted", "Intra-BSC handover attempts."},
	[BSC_CTR_HANDOVER_COMPLETED] = 		{"handover:completed", "Intra-BSC handover completed."},
	[BSC_CTR_HANDOVER_STOPPED] = 		{"handover:stopped", "Connection ended during HO."},
	[BSC_CTR_HANDOVER_NO_CHANNEL] = 	{"handover:no_channel", "Failure to allocate lchan for HO."},
	[BSC_CTR_HANDOVER_TIMEOUT] = 		{"handover:timeout", "Handover timed out."},
	[BSC_CTR_HANDOVER_FAILED] = 		{"handover:failed", "Received Handover Fail messages."},
	[BSC_CTR_HANDOVER_ERROR] = 		{"handover:error", "Re-assigment failed for other reason."},

	[BSC_CTR_INTER_BSC_HO_OUT_ATTEMPTED] =	{"interbsc_ho_out:attempted",
						 "Attempts to handover to remote BSS."},
	[BSC_CTR_INTER_BSC_HO_OUT_COMPLETED] =	{"interbsc_ho_out:completed",
						 "Handover to remote BSS completed."},
	[BSC_CTR_INTER_BSC_HO_OUT_STOPPED] =	{"interbsc_ho_out:stopped", "Connection ended during HO."},
	[BSC_CTR_INTER_BSC_HO_OUT_TIMEOUT] =	{"interbsc_ho_out:timeout", "Handover timed out."},
	[BSC_CTR_INTER_BSC_HO_OUT_ERROR] =	{"interbsc_ho_out:error",
						 "Handover to remote BSS failed for other reason."},

	[BSC_CTR_INTER_BSC_HO_IN_ATTEMPTED] =	{"interbsc_ho_in:attempted",
						 "Attempts to handover from remote BSS."},
	[BSC_CTR_INTER_BSC_HO_IN_COMPLETED] =	{"interbsc_ho_in:completed",
						 "Handover from remote BSS completed."},
	[BSC_CTR_INTER_BSC_HO_IN_STOPPED] =	{"interbsc_ho_in:stopped", "Connection ended during HO."},
	[BSC_CTR_INTER_BSC_HO_IN_NO_CHANNEL] =	{"interbsc_ho_in:no_channel",
						 "Failure to allocate lchan for HO."},
	[BSC_CTR_INTER_BSC_HO_IN_TIMEOUT] =	{"interbsc_ho_in:timeout", "Handover from remote BSS timed out."},
	[BSC_CTR_INTER_BSC_HO_IN_FAILED] =	{"interbsc_ho_in:failed", "Received Handover Fail message."},
	[BSC_CTR_INTER_BSC_HO_IN_ERROR] =	{"interbsc_ho_in:error",
						 "Handover from remote BSS failed for other reason."},

	[BSC_CTR_PAGING_ATTEMPTED] = 		{"paging:attempted", "Paging attempts for a subscriber."},
	[BSC_CTR_PAGING_DETACHED] = 		{"paging:detached", "Paging request send failures because no responsible BTS was found."},
	[BSC_CTR_PAGING_RESPONDED] = 		{"paging:responded", "Paging attempts with successful response."},

	[BSC_CTR_UNKNOWN_UNIT_ID] = 		{"abis:unknown_unit_id", "Connection attempts from unknown IPA CCM Unit ID."},
};



static const struct rate_ctr_group_desc bsc_ctrg_desc = {
	"bsc",
	"base station controller",
	OSMO_STATS_CLASS_GLOBAL,
	ARRAY_SIZE(bsc_ctr_description),
	bsc_ctr_description,
};

struct gsm_tz {
	int override; /* if 0, use system's time zone instead. */
	int hr; /* hour */
	int mn; /* minute */
	int dst; /* daylight savings */
};

struct gsm_network {
	/* TODO MSCSPLIT the gsm_network struct is basically a kitchen sink for
	 * global settings and variables, "madly" mixing BSC and MSC stuff. Split
	 * this in e.g. struct osmo_bsc and struct osmo_msc, with the things
	 * these have in common, like country and network code, put in yet
	 * separate structs and placed as members in osmo_bsc and osmo_msc. */

	struct osmo_plmn_id plmn;

	/* bit-mask of permitted encryption algorithms. LSB=A5/0, MSB=A5/7 */
	uint8_t a5_encryption_mask;
	int neci;

	struct handover_cfg *ho;
	struct {
		unsigned int congestion_check_interval_s;
		struct osmo_timer_list congestion_check_timer;
	} hodec2;

	struct rate_ctr_group *bsc_ctrs;

	unsigned int num_bts;
	struct llist_head bts_list;
	struct llist_head bts_rejected;

	/* see gsm_network_T_defs */
	struct osmo_tdef *T_defs;

	enum gsm_chan_t ctype_by_chreq[_NUM_CHREQ_T];

	/* Use a TCH for handling requests of type paging any */
	int pag_any_tch;

	/* MSC data in case we are a true BSC */
	struct osmo_bsc_data *bsc_data;

	/* control interface */
	struct ctrl_handle *ctrl;

	/* Allow or disallow TCH/F on dynamic TCH/F_TCH/H_PDCH; OS#1778 */
	bool dyn_ts_allow_tch_f;

	/* all active subscriber connections. */
	struct llist_head subscr_conns;

	/* if override is nonzero, this timezone data is used for all MM
	 * contexts. */
	/* TODO: in OsmoNITB, tz-override used to be BTS-specific. To enable
	 * BTS|RNC specific timezone overrides for multi-tz networks in
	 * OsmoMSC, this should be tied to the location area code (LAC). */
	struct gsm_tz tz;

	/* List of all struct bsc_subscr used in libbsc. This llist_head is
	 * allocated so that the llist_head pointer itself can serve as a
	 * talloc context (useful to not have to pass the entire gsm_network
	 * struct to the bsc_subscr_* API, and for bsc_susbscr unit tests to
	 * not require gsm_data.h). In an MSC-without-BSC environment, this
	 * pointer is NULL to indicate absence of a bsc_subscribers list. */
	struct llist_head *bsc_subscribers;

	/* Timer for periodic channel load measurements to maintain each BTS's T3122. */
	struct osmo_timer_list t3122_chan_load_timer;

	struct {
		struct mgcp_client_conf *conf;
		struct mgcp_client *client;
		struct osmo_tdef *tdefs;
	} mgw;

	/* Remote BSS Cell Identifier Lists */
	struct neighbor_ident_list *neighbor_bss_cells;
};

struct gsm_audio_support {
        uint8_t hr  : 1,
                ver : 7;
};

static inline const struct osmo_location_area_id *bts_lai(struct gsm_bts *bts)
{
	static struct osmo_location_area_id lai;
	lai = (struct osmo_location_area_id){
		.plmn = bts->network->plmn,
		.lac = bts->location_area_code,
	};
	return &lai;
}

extern void talloc_ctx_init(void *ctx_root);

int gsm_set_bts_type(struct gsm_bts *bts, enum gsm_bts_type type);

enum gsm_bts_type parse_btstype(const char *arg);
const char *btstype2str(enum gsm_bts_type type);
struct gsm_bts *gsm_bts_by_lac(struct gsm_network *net, unsigned int lac,
				struct gsm_bts *start_bts);

extern void *tall_bsc_ctx;

/* this actaully refers to the IPA transport, not the BTS model */
static inline int is_ipaccess_bts(struct gsm_bts *bts)
{
	switch (bts->type) {
	case GSM_BTS_TYPE_NANOBTS:
	case GSM_BTS_TYPE_OSMOBTS:
		return 1;
	default:
		break;
	}
	return 0;
}

static inline int is_sysmobts_v2(struct gsm_bts *bts)
{
	switch (bts->type) {
	case GSM_BTS_TYPE_OSMOBTS:
		return 1;
	default:
		break;
	}
	return 0;
}

static inline int is_siemens_bts(struct gsm_bts *bts)
{
	switch (bts->type) {
	case GSM_BTS_TYPE_BS11:
		return 1;
	default:
		break;
	}

	return 0;
}

static inline int is_nokia_bts(struct gsm_bts *bts)
{
	switch (bts->type) {
	case GSM_BTS_TYPE_NOKIA_SITE:
		return 1;
	default:
		break;
	}

	return 0;
}

static inline int is_e1_bts(struct gsm_bts *bts)
{
	switch (bts->type) {
	case GSM_BTS_TYPE_BS11:
	case GSM_BTS_TYPE_RBS2000:
	case GSM_BTS_TYPE_NOKIA_SITE:
		return 1;
	default:
		break;
	}

	return 0;
}

extern struct gsm_network *bsc_gsmnet;

enum bts_gprs_mode bts_gprs_mode_parse(const char *arg, int *valid);
const char *bts_gprs_mode_name(enum bts_gprs_mode mode);
int bts_gprs_mode_is_compat(struct gsm_bts *bts, enum bts_gprs_mode mode);

void gsm48_ra_id_by_bts(struct gsm48_ra_id *buf, struct gsm_bts *bts);
void gprs_ra_id_by_bts(struct gprs_ra_id *raid, struct gsm_bts *bts);

int gsm_bts_model_register(struct gsm_bts_model *model);

struct gsm_subscriber_connection *bsc_subscr_con_allocate(struct gsm_network *network);

struct gsm_subscriber_connection *msc_subscr_con_allocate(struct gsm_network *network);
void msc_subscr_con_free(struct gsm_subscriber_connection *conn);

struct gsm_bts *gsm_bts_alloc_register(struct gsm_network *net, enum gsm_bts_type type, uint8_t bsic);
struct gsm_bts *bsc_bts_alloc_register(struct gsm_network *net, enum gsm_bts_type type, uint8_t bsic);

void set_ts_e1link(struct gsm_bts_trx_ts *ts, uint8_t e1_nr,
		   uint8_t e1_ts, uint8_t e1_ts_ss);

void gsm_trx_lock_rf(struct gsm_bts_trx *trx, bool locked, const char *reason);
struct gsm_bts_trx *gsm_bts_trx_by_nr(struct gsm_bts *bts, int nr);
int gsm_bts_trx_set_system_infos(struct gsm_bts_trx *trx);
int gsm_bts_set_system_infos(struct gsm_bts *bts);

/* generic E1 line operations for all ISDN-based BTS. */
extern struct e1inp_line_ops bts_isdn_e1inp_line_ops;

extern const struct value_string bts_type_names[_NUM_GSM_BTS_TYPE+1];
extern const struct value_string bts_type_descs[_NUM_GSM_BTS_TYPE+1];

char *get_model_oml_status(const struct gsm_bts *bts);

unsigned long long bts_uptime(const struct gsm_bts *bts);

/* control interface handling */
int bsc_base_ctrl_cmds_install(void);

/* dependency handling */
void bts_depend_mark(struct gsm_bts *bts, int dep);
void bts_depend_clear(struct gsm_bts *bts, int dep);
int bts_depend_check(struct gsm_bts *bts);
int bts_depend_is_depedency(struct gsm_bts *base, struct gsm_bts *other);

int gsm_bts_get_radio_link_timeout(const struct gsm_bts *bts);
void gsm_bts_set_radio_link_timeout(struct gsm_bts *bts, int value);

bool classmark_is_r99(struct gsm_classmark *cm);

bool trx_is_usable(const struct gsm_bts_trx *trx);
bool ts_is_usable(const struct gsm_bts_trx_ts *ts);

int gsm_lchan_type_by_pchan(enum gsm_phys_chan_config pchan);
enum gsm_phys_chan_config gsm_pchan_by_lchan_type(enum gsm_chan_t type);

void gsm_bts_all_ts_dispatch(struct gsm_bts *bts, uint32_t ts_ev, void *data);
void gsm_trx_all_ts_dispatch(struct gsm_bts_trx *trx, uint32_t ts_ev, void *data);

int bts_count_free_ts(struct gsm_bts *bts, enum gsm_phys_chan_config pchan);

#endif /* _GSM_DATA_H */