aboutsummaryrefslogtreecommitdiffstats
path: root/src/gsm/gsm0808.c
blob: a84e717d367ee212cf1c1498e8394031e8cffd24 (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
/*
 * (C) 2009,2010 by Holger Hans Peter Freyther <zecke@selfish.org>
 * (C) 2009,2010 by On-Waves
 * All Rights Reserved
 *
 * SPDX-License-Identifier: GPL-2.0+
 *
 * 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.
 *
 */

#include <osmocom/core/byteswap.h>
#include <osmocom/gsm/gsm0808.h>
#include <osmocom/gsm/gsm0808_utils.h>
#include <osmocom/gsm/protocol/gsm_08_08.h>
#include <osmocom/gsm/gsm48.h>

/*! \addtogroup gsm0808
 *  @{
 *  \file gsm0808.c
 *  Helper functions regarding the TS 08.08 / 48.008 A interface, primarily
 *  message generation/encoding.
 */

#define BSSMAP_MSG_SIZE 512
#define BSSMAP_MSG_HEADROOM 128

/*! Create "Complete L3 Info" for AoIP, legacy implementation.
 * Instead use gsm0808_create_layer3_aoip2(), which is capable of three-digit MNC with leading zeros.
 *  \param[in] msg_l3 msgb containing Layer 3 Message
 *  \param[in] nc Mobile Network Code
 *  \param[in] cc Mobile Country Code
 *  \param[in] lac Location Area Code
 *  \param[in] _ci Cell Identity
 *  \param[in] scl Speech Codec List
 *  \returns callee-allocated msgb with Complete L3 Info message */
struct msgb *gsm0808_create_layer3_aoip(const struct msgb *msg_l3, uint16_t nc,
					uint16_t cc, int lac, uint16_t _ci,
					const struct gsm0808_speech_codec_list
					*scl)
{
	struct osmo_cell_global_id cgi = {
		.lai = {
			.plmn = {
				.mcc = cc,
				.mnc = nc,
			},
			.lac = lac,
		},
		.cell_identity = _ci,
	};
	return gsm0808_create_layer3_2(msg_l3, &cgi, scl);
}

/*! Create "Complete L3 Info" for AoIP.
 *  \param[in] msg_l3 msgb containing Layer 3 Message -- not modified by this call.
 *  \param[in] cell  MCC, MNC, LAC, CI to identify the cell.
 *  \param[in] scl Speech Codec List, optional.
 *  \returns newly allocated msgb with Complete L3 Info message */
struct msgb *gsm0808_create_layer3_2(const struct msgb *msg_l3, const struct osmo_cell_global_id *cell,
				     const struct gsm0808_speech_codec_list *scl)
{
	struct msgb* msg;
	struct {
		uint8_t ident;
		struct gsm48_loc_area_id lai;
		uint16_t ci;
	} __attribute__ ((packed)) lai_ci;

	msg  = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
				   "bssmap cmpl l3");
	if (!msg)
		return NULL;

	/* create layer 3 header */
	msgb_v_put(msg, BSS_MAP_MSG_COMPLETE_LAYER_3);

	/* create the cell header */
	lai_ci.ident = CELL_IDENT_WHOLE_GLOBAL;
	gsm48_generate_lai2(&lai_ci.lai, &cell->lai);
	lai_ci.ci = osmo_htons(cell->cell_identity);
	msgb_tlv_put(msg, GSM0808_IE_CELL_IDENTIFIER, sizeof(lai_ci),
		     (uint8_t *) &lai_ci);

	/* copy the layer3 data */
	msgb_tlv_put(msg, GSM0808_IE_LAYER_3_INFORMATION,
		     msgb_l3len(msg_l3), msg_l3->l3h);

	/* AoIP: add Codec List (BSS Supported) 3.2.2.103 */
	if (scl)
		gsm0808_enc_speech_codec_list(msg, scl);

	/* push the bssmap header */
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create "Complete L3 Info" for A, legacy implementation.
 * Instead use gsm0808_create_layer3_2() with the scl parameter passed as NULL,
 * which is capable of three-digit MNC with leading zeros.
 *  \param[in] msg_l3 msgb containing Layer 3 Message
 *  \param[in] nc Mobile Network Code
 *  \param[in] cc Mobile Country Code
 *  \param[in] lac Location Area Code
 *  \param[in] _ci Cell Identity
 *  \returns callee-allocated msgb with Complete L3 Info message */
struct msgb *gsm0808_create_layer3(struct msgb *msg_l3, uint16_t nc,
				   uint16_t cc, int lac, uint16_t _ci)
{
	struct osmo_cell_global_id cgi = {
		.lai = {
			.plmn = {
				.mcc = cc,
				.mnc = nc,
			},
			.lac = lac,
		},
		.cell_identity = _ci,
	};
	return gsm0808_create_layer3_2(msg_l3, &cgi, NULL);
}

/*! Create BSSMAP RESET message
 *  \returns callee-allocated msgb with BSSMAP Reset message */
struct msgb *gsm0808_create_reset(void)
{
	uint8_t cause = GSM0808_CAUSE_EQUIPMENT_FAILURE;
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "bssmap: reset");
	if (!msg)
		return NULL;

	msgb_v_put(msg, BSS_MAP_MSG_RESET);
	msgb_tlv_put(msg, GSM0808_IE_CAUSE, 1, &cause);
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP RESET ACK message
 *  \returns callee-allocated msgb with BSSMAP Reset ACK message */
struct msgb *gsm0808_create_reset_ack(void)
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "bssmap: reset ack");
	if (!msg)
		return NULL;

	msgb_v_put(msg, BSS_MAP_MSG_RESET_ACKNOWLEDGE);
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP Clear Complete message
 *  \returns callee-allocated msgb with BSSMAP Clear Complete message */
struct msgb *gsm0808_create_clear_complete(void)
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "bssmap: clear complete");
	uint8_t val = BSS_MAP_MSG_CLEAR_COMPLETE;
	if (!msg)
		return NULL;

	msg->l3h = msg->data;
	msgb_tlv_put(msg, BSSAP_MSG_BSS_MANAGEMENT, 1, &val);

	return msg;
}

/*! Create BSSMAP Clear Command message
 *  \param[in] cause TS 08.08 cause value
 *  \returns callee-allocated msgb with BSSMAP Clear Command message */
struct msgb *gsm0808_create_clear_command(uint8_t cause)
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "bssmap: clear command");
	if (!msg)
		return NULL;

	msg->l3h = msgb_tv_put(msg, BSSAP_MSG_BSS_MANAGEMENT, 4);
	msgb_v_put(msg, BSS_MAP_MSG_CLEAR_CMD);
	msgb_tlv_put(msg, GSM0808_IE_CAUSE, 1, &cause);

	return msg;
}

/*! Create BSSMAP Cipher Mode Command message
 *  \param[in] ei Mandatory Encryption Information
 *  \param[in] cipher_response_mode optional 1-byte Cipher Response Mode
 *  \returns callee-allocated msgb with BSSMAP Cipher Mode Command message */
struct msgb *gsm0808_create_cipher(const struct gsm0808_encrypt_info *ei,
				   const uint8_t *cipher_response_mode)
{
	/* See also: 3GPP TS 48.008 3.2.1.30 CIPHER MODE COMMAND */
	struct msgb *msg;

	/* Mandatory emelent! */
	OSMO_ASSERT(ei);

	msg =
	    msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
				"cipher-mode-command");
	if (!msg)
		return NULL;

	/* Message Type 3.2.2.1 */
	msgb_v_put(msg, BSS_MAP_MSG_CIPHER_MODE_CMD);

	/* Encryption Information 3.2.2.10 */
	gsm0808_enc_encrypt_info(msg, ei);

	/* Cipher Response Mode 3.2.2.34 */
	if (cipher_response_mode)
		msgb_tv_put(msg, GSM0808_IE_CIPHER_RESPONSE_MODE,
			    *cipher_response_mode);

	/* pre-pend the header */
	msg->l3h =
	    msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP Cipher Mode Complete message
 *  \param[in] layer3 L3 Message to be included
 *  \param[in] alg_id Chosen Encrpytion Algorithm
 *  \returns callee-allocated msgb with BSSMAP Cipher Mode Complete message */
struct msgb *gsm0808_create_cipher_complete(struct msgb *layer3, uint8_t alg_id)
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "cipher-complete");
	if (!msg)
		return NULL;

        /* send response with BSS override for A5/1... cheating */
	msgb_v_put(msg, BSS_MAP_MSG_CIPHER_MODE_COMPLETE);

	/* include layer3 in case we have at least two octets */
	if (layer3 && msgb_l3len(layer3) > 2) {
		msg->l4h = msgb_tlv_put(msg, GSM0808_IE_LAYER_3_MESSAGE_CONTENTS,
					msgb_l3len(layer3), layer3->l3h);
	}

	/* and the optional BSS message */
	msgb_tv_put(msg, GSM0808_IE_CHOSEN_ENCR_ALG, alg_id);

	/* pre-pend the header */
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP Cipher Mode Reject message
 *  \param[in] cause 3GPP TS 08.08 §3.2.2.5 cause value
 *  \returns callee-allocated msgb with BSSMAP Cipher Mode Reject message */
struct msgb *gsm0808_create_cipher_reject(enum gsm0808_cause cause)
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "bssmap: cipher mode reject");
	if (!msg)
		return NULL;

	msgb_v_put(msg, BSS_MAP_MSG_CIPHER_MODE_REJECT);

	msgb_tlv_put(msg, GSM0808_IE_CAUSE, 1, (const uint8_t *)&cause);

	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP Cipher Mode Reject message
 *  \param[in] class 3GPP TS 08.08 §3.2.2.5 cause's class
 *  \param[in] ext 3GPP TS 08.08 §3.2.2.5 cause value (national application extension)
 *  \returns callee-allocated msgb with BSSMAP Cipher Mode Reject message */
struct msgb *gsm0808_create_cipher_reject_ext(enum gsm0808_cause_class class, uint8_t ext)
{
	uint8_t c[2];
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "bssmap: cipher mode reject");
	if (!msg)
		return NULL;

	c[0] = 0x80 | (class << 4); /* set the high bit to indicate extended cause */
	c[1] = ext;

	msgb_v_put(msg, BSS_MAP_MSG_CIPHER_MODE_REJECT);

	msgb_tlv_put(msg, GSM0808_IE_CAUSE, 2, c);

	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP LCLS CONNECT CONTROL message (TS 48.008 3.2.1.91).
 *  \param[in] config LCLS Configuration
 *  \param[in] control LCLS Connection Status Control
 *  \returns callee-allocated msgb with BSSMAP LCLS NOTIFICATION */
struct msgb *gsm0808_create_lcls_conn_ctrl(enum gsm0808_lcls_config *config,
					   enum gsm0808_lcls_control *control)
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "bssmap: LCLS CONN CTRL");
	if (!msg)
		return NULL;

	msgb_v_put(msg, BSS_MAP_MSG_LCLS_CONNECT_CTRL);
	if (config)
		msgb_tv_put(msg, GSM0808_IE_LCLS_CONFIG, *config);
	if (control)
		msgb_tv_put(msg, GSM0808_IE_LCLS_CONFIG, *control);
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP LCLS CONNECT CONTROL ACK message (TS 48.008 3.2.1.92).
 *  \param[in] status LCLS BSS Status
 *  \returns callee-allocated msgb with BSSMAP LCLS NOTIFICATION */
struct msgb *gsm0808_create_lcls_conn_ctrl_ack(enum gsm0808_lcls_status status)
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "bssmap: LCLS CONN CTRL ACK");
	if (!msg)
		return NULL;

	msgb_v_put(msg, BSS_MAP_MSG_LCLS_CONNECT_CTRL_ACK);
	msgb_tv_put(msg, GSM0808_IE_LCLS_BSS_STATUS, status);
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP LCLS NOTIFICATION message (TS 48.008 3.2.1.93).
 *  \param[in] status LCLS BSS Status
 *  \param[in] break_req Include the LCLS BREAK REQ IE (true) or not (false)
 *  \returns callee-allocated msgb with BSSMAP LCLS NOTIFICATION */
struct msgb *gsm0808_create_lcls_notification(enum gsm0808_lcls_status status, bool break_req)
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "bssmap: LCLS NOTIFICATION");
	if (!msg)
		return NULL;

	msgb_v_put(msg, BSS_MAP_MSG_LCLS_NOTIFICATION);
	msgb_tv_put(msg, GSM0808_IE_LCLS_BSS_STATUS, status);
	if (break_req)
		msgb_v_put(msg, GSM0808_IE_LCLS_BREAK_REQ);
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP Classmark Request message
 *  \returns callee-allocated msgb with BSSMAP Classmark Request message */
struct msgb *gsm0808_create_classmark_request()
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "classmark-request");
	if (!msg)
		return NULL;

	msgb_v_put(msg, BSS_MAP_MSG_CLASSMARK_RQST);
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));
	return msg;
}

/*! Create BSSMAP Classmark Update message
 *  \param[in] cm2 Classmark 2
 *  \param[in] cm2_len length (in octets) of \a cm2
 *  \param[in] cm3 Classmark 3
 *  \param[in] cm3_len length (in octets) of \a cm3
 *  \returns callee-allocated msgb with BSSMAP Classmark Update message */
struct msgb *gsm0808_create_classmark_update(const uint8_t *cm2, uint8_t cm2_len,
					     const uint8_t *cm3, uint8_t cm3_len)
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "classmark-update");
	if (!msg)
		return NULL;

	msgb_v_put(msg, BSS_MAP_MSG_CLASSMARK_UPDATE);
	msgb_tlv_put(msg, GSM0808_IE_CLASSMARK_INFORMATION_T2, cm2_len, cm2);
	if (cm3)
		msgb_tlv_put(msg, GSM0808_IE_CLASSMARK_INFORMATION_T3,
			     cm3_len, cm3);

	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP SAPI N Reject message
 *  \param[in] link_id Link Identifier
 *  \returns callee-allocated msgb with BSSMAP SAPI N Reject message */
struct msgb *gsm0808_create_sapi_reject(uint8_t link_id)
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "bssmap: sapi 'n' reject");
	if (!msg)
		return NULL;

	msgb_v_put(msg, BSS_MAP_MSG_SAPI_N_REJECT);
	msgb_v_put(msg, link_id);
	msgb_v_put(msg, GSM0808_CAUSE_BSS_NOT_EQUIPPED);

	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP Assignment Request message
 *  \param[in] ct Channel Type
 *  \param[in] cic Circuit Identity Code (Classic A only)
 *  \param[in] ss Socket Address of MSC-side RTP socket (AoIP only)
 *  \param[in] scl Speech Codec List (AoIP only)
 *  \param[in] ci Call Identifier (Optional, LCLS)
 *  \returns callee-allocated msgb with BSSMAP Assignment Request message */
struct msgb *gsm0808_create_ass(const struct gsm0808_channel_type *ct,
				const uint16_t *cic,
				const struct sockaddr_storage *ss,
				const struct gsm0808_speech_codec_list *scl,
				const uint32_t *ci)
{
	/* See also: 3GPP TS 48.008 3.2.1.1 ASSIGNMENT REQUEST */
	struct msgb *msg;
	uint16_t cic_sw;
	uint32_t ci_sw;

	/* Mandatory emelent! */
	OSMO_ASSERT(ct);

	msg =
	    msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
				"bssmap: ass req");
	if (!msg)
		return NULL;

	/* Message Type 3.2.2.1 */
	msgb_v_put(msg, BSS_MAP_MSG_ASSIGMENT_RQST);

	/* Channel Type 3.2.2.11 */
	gsm0808_enc_channel_type(msg, ct);

	/* Circuit Identity Code 3.2.2.2  */
	if (cic) {
		cic_sw = osmo_htons(*cic);
		msgb_tv_fixed_put(msg, GSM0808_IE_CIRCUIT_IDENTITY_CODE,
				  sizeof(cic_sw), (uint8_t *) & cic_sw);
	}

	/* AoIP: AoIP Transport Layer Address (MGW) 3.2.2.102 */
	if (ss) {
		gsm0808_enc_aoip_trasp_addr(msg, ss);
	}

	/* AoIP: Codec List (MSC Preferred) 3.2.2.103 */
	if (scl)
		gsm0808_enc_speech_codec_list(msg, scl);

	/* AoIP: Call Identifier 3.2.2.105 */
	if (ci) {
		ci_sw = osmo_htonl(*ci);
		msgb_tv_fixed_put(msg, GSM0808_IE_CALL_ID, sizeof(ci_sw),
				  (uint8_t *) & ci_sw);
	}

	/* push the bssmap header */
	msg->l3h =
	    msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP Assignment Completed message
 *  \param[in] rr_cause GSM 04.08 RR Cause value
 *  \param[in] chosen_channel Chosen Channel
 *  \param[in] encr_alg_id Encryption Algorithm ID
 *  \param[in] speech_mode Speech Mode
 *  \param[in] ss Socket Address of BSS-side RTP socket
 *  \param[in] sc Speech Codec (current)
 *  \param[in] scl Speech Codec List (permitted)
 *  \returns callee-allocated msgb with BSSMAP Assignment Complete message */
struct msgb *gsm0808_create_ass_compl(uint8_t rr_cause, uint8_t chosen_channel,
				      uint8_t encr_alg_id, uint8_t speech_mode,
				      const struct sockaddr_storage *ss,
				      const struct gsm0808_speech_codec *sc,
				      const struct gsm0808_speech_codec_list
				      *scl)
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
						"bssmap: ass compl");
	if (!msg)
		return NULL;

	msgb_v_put(msg, BSS_MAP_MSG_ASSIGMENT_COMPLETE);

	/* write 3.2.2.22 */
	msgb_tv_put(msg, GSM0808_IE_RR_CAUSE, rr_cause);

	/* write cirtcuit identity  code 3.2.2.2 */
	/* write cell identifier 3.2.2.17 */
	/* write chosen channel 3.2.2.33 when BTS picked it */
	msgb_tv_put(msg, GSM0808_IE_CHOSEN_CHANNEL, chosen_channel);

	/* write chosen encryption algorithm 3.2.2.44 */
	msgb_tv_put(msg, GSM0808_IE_CHOSEN_ENCR_ALG, encr_alg_id);

	/* write circuit pool 3.2.2.45 */
	/* write speech version chosen: 3.2.2.51 when BTS picked it */
	if (speech_mode != 0)
		msgb_tv_put(msg, GSM0808_IE_SPEECH_VERSION, speech_mode);

	/* AoIP: AoIP Transport Layer Address (BSS) 3.2.2.102 */
	if (ss)
		gsm0808_enc_aoip_trasp_addr(msg, ss);

	/* AoIP: Speech Codec (Chosen) 3.2.2.104 */
	if (sc)
		gsm0808_enc_speech_codec(msg, sc);

	/* AoIP: add Codec List (BSS Supported) 3.2.2.103 */
	if (scl)
		gsm0808_enc_speech_codec_list(msg, scl);

	/* write LSA identifier 3.2.2.15 */

	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP Assignment Completed message
 *  \param[in] rr_cause GSM 04.08 RR Cause value
 *  \param[in] chosen_channel Chosen Channel
 *  \param[in] encr_alg_id Encryption Algorithm ID
 *  \param[in] speech_mode Speech Mode
 *  \returns callee-allocated msgb with BSSMAP Assignment Complete message */
struct msgb *gsm0808_create_assignment_completed(uint8_t rr_cause,
						 uint8_t chosen_channel,
						 uint8_t encr_alg_id,
						 uint8_t speech_mode)
{
	return gsm0808_create_ass_compl(rr_cause, chosen_channel, encr_alg_id,
					speech_mode, NULL, NULL, NULL);
}

/*! Create BSSMAP Assignment Failure message
 *  \param[in] cause BSSMAP Cause value
 *  \param[in] rr_cause GSM 04.08 RR Cause value
 *  \param[in] scl Optional Speech Cdec List (AoIP)
 *  \returns callee-allocated msgb with BSSMAP Assignment Failure message */
struct msgb *gsm0808_create_ass_fail(uint8_t cause, const uint8_t *rr_cause,
				     const struct gsm0808_speech_codec_list
				     *scl)
{
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "bssmap: ass fail");
	if (!msg)
		return NULL;

	msgb_v_put(msg, BSS_MAP_MSG_ASSIGMENT_FAILURE);
	msgb_tlv_put(msg, GSM0808_IE_CAUSE, 1, &cause);

	/* RR cause 3.2.2.22 */
	if (rr_cause)
		msgb_tv_put(msg, GSM0808_IE_RR_CAUSE, *rr_cause);

	/* Circuit pool 3.22.45 */
	/* Circuit pool list 3.2.2.46 */

	/* AoIP: add Codec List (BSS Supported) 3.2.2.103 */
	if (scl)
		gsm0808_enc_speech_codec_list(msg, scl);

	/* update the size */
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP Assignment Failure message
 *  \param[in] cause BSSMAP Cause value
 *  \param[in] rr_cause GSM 04.08 RR Cause value
 *  \returns callee-allocated msgb with BSSMAP Assignment Failure message */
struct msgb *gsm0808_create_assignment_failure(uint8_t cause,
					       uint8_t *rr_cause)
{
	return gsm0808_create_ass_fail(cause, rr_cause, NULL);
}

/*! Create BSSMAP Clear Request message
 *  \param[in] cause BSSMAP Cause value
 *  \returns callee-allocated msgb with BSSMAP Clear Request message */
struct msgb *gsm0808_create_clear_rqst(uint8_t cause)
{
	struct msgb *msg;

	msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
				  "bssmap: clear rqst");
	if (!msg)
		return NULL;

	msgb_v_put(msg, BSS_MAP_MSG_CLEAR_RQST);
	msgb_tlv_put(msg, GSM0808_IE_CAUSE, 1, &cause);
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP PAGING message
 *  \param[in] imsi Mandatory paged IMSI in string representation
 *  \param[in] tmsi Optional paged TMSI
 *  \param[in] cil Mandatory Cell Identity List (where to page)
 *  \param[in] chan_needed Channel Type needed
 *  \returns callee-allocated msgb with BSSMAP PAGING message */
struct msgb *gsm0808_create_paging2(const char *imsi, const uint32_t *tmsi,
				    const struct gsm0808_cell_id_list2 *cil,
				    const uint8_t *chan_needed)
{
	struct msgb *msg;
	uint8_t mid_buf[GSM48_MI_SIZE + 2];
	int mid_len;
	uint32_t tmsi_sw;

	/* Mandatory elements! */
	OSMO_ASSERT(imsi);
	OSMO_ASSERT(cil);

	/* Malformed IMSI */
	OSMO_ASSERT(strlen(imsi) <= GSM48_MI_SIZE);

	msg =
	    msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM, "paging");
	if (!msg)
		return NULL;

	/* Message Type 3.2.2.1 */
	msgb_v_put(msg, BSS_MAP_MSG_PAGING);

	/* mandatory IMSI 3.2.2.6 */
	mid_len = gsm48_generate_mid_from_imsi(mid_buf, imsi);
	msgb_tlv_put(msg, GSM0808_IE_IMSI, mid_len - 2, mid_buf + 2);

	/* TMSI 3.2.2.7 */
	if (tmsi) {
		tmsi_sw = osmo_htonl(*tmsi);
		msgb_tlv_put(msg, GSM0808_IE_TMSI, sizeof(*tmsi),
			     (uint8_t *) & tmsi_sw);
	}

	/* mandatory Cell Identifier List 3.2.2.27 */
	gsm0808_enc_cell_id_list2(msg, cil);

	/* Channel Needed 3.2.2.36 */
	if (chan_needed) {
		msgb_tv_put(msg, GSM0808_IE_CHANNEL_NEEDED,
			    (*chan_needed) & 0x03);
	}

	/* pre-pend the header */
	msg->l3h =
	    msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! DEPRECATED: Use gsm0808_create_paging2 instead.
 * Create BSSMAP PAGING message.
 *  \param[in] imsi Mandatory paged IMSI in string representation
 *  \param[in] tmsi Optional paged TMSI
 *  \param[in] cil Cell Identity List (where to page)
 *  \param[in] chan_needed Channel Type needed
 *  \returns callee-allocated msgb with BSSMAP PAGING message */
struct msgb *gsm0808_create_paging(const char *imsi, const uint32_t *tmsi,
				   const struct gsm0808_cell_id_list *cil,
				   const uint8_t *chan_needed)
{
	struct gsm0808_cell_id_list2 cil2 = {};

	/* Mandatory emelents! */
	OSMO_ASSERT(cil);

	if (cil->id_list_len > GSM0808_CELL_ID_LIST2_MAXLEN)
		return NULL;

	cil2.id_discr = cil->id_discr;
	memcpy(cil2.id_list, cil->id_list_lac, cil->id_list_len * sizeof(cil2.id_list[0].lac));
	cil2.id_list_len = cil->id_list_len;

	return gsm0808_create_paging2(imsi, tmsi, &cil2, chan_needed);
}

static uint8_t put_old_bss_to_new_bss_information(struct msgb *msg,
						  const struct gsm0808_old_bss_to_new_bss_info *i)
{
	uint8_t *old_tail;
	uint8_t *tlv_len;

	msgb_put_u8(msg, GSM0808_IE_OLD_BSS_TO_NEW_BSS_INFORMATION);
	tlv_len = msgb_put(msg, 1);
	old_tail = msg->tail;

	if (i->extra_information_present) {
		uint8_t val = 0;
		if (i->extra_information.prec)
			val |= 1 << 0;
		if (i->extra_information.lcs)
			val |= 1 << 1;
		if (i->extra_information.ue_prob)
			val |= 1 << 2;
		msgb_tlv_put(msg, GSM0808_FE_IE_EXTRA_INFORMATION, 1, &val);
	}

	if (i->current_channel_type_2_present) {
		uint8_t val[2] = {
			i->current_channel_type_2.mode,
			i->current_channel_type_2.field,
		};
		msgb_tlv_put(msg, GSM0808_FE_IE_CURRENT_CHANNEL_TYPE_2, 2, val);
	}

	*tlv_len = (uint8_t) (msg->tail - old_tail);
	return *tlv_len + 2;
}

/*! Create BSSMAP HANDOVER REQUIRED message.
 * \param[in] params  All information to be encoded.
 * \returns newly allocated msgb with BSSMAP REQUIRED message. */
struct msgb *gsm0808_create_handover_required(const struct gsm0808_handover_required *params)
{
	struct msgb *msg;

	msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM, "BSSMAP-HANDOVER-REQUIRED");
	if (!msg)
		return NULL;

	/* Message Type, 3.2.2.1 */
	msgb_v_put(msg, BSS_MAP_MSG_HANDOVER_REQUIRED);

	/* Cause, 3.2.2.5 */
	msgb_tlv_put(msg, GSM0808_IE_CAUSE, params->cause & 0x80? 2 : 1, (const uint8_t*)&params->cause);

	/* Cell Identifier List, 3.2.2.27 */
	gsm0808_enc_cell_id_list2(msg, &params->cil);

	/* Current Channel Type 1, 3.2.2.49 */
	if (params->current_channel_type_1_present)
		msgb_tv_fixed_put(msg, GSM0808_IE_CURRENT_CHANNEL_TYPE_1, 1, &params->current_channel_type_1);

	/* Speech Version (Used), 3.2.2.51 */
	if (params->speech_version_used_present)
		msgb_tv_fixed_put(msg, GSM0808_IE_SPEECH_VERSION, 1, &params->speech_version_used);

	if (params->old_bss_to_new_bss_info_present)
		put_old_bss_to_new_bss_information(msg, &params->old_bss_to_new_bss_info);

	/* pre-pend the header */
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP HANDOVER REQUEST ACKNOWLEDGE message, 3GPP TS 48.008 3.2.1.10.
 * Sent from the MT BSC back to the MSC when it has allocated an lchan to handover to.
 * l3_info is the RR Handover Command that the MO BSC sends to the MS to move over. */
struct msgb *gsm0808_create_handover_request_ack(const uint8_t *l3_info, uint8_t l3_info_len,
						 uint8_t chosen_channel, uint8_t chosen_encr_alg,
						 uint8_t chosen_speech_version)
{
	struct msgb *msg;

	msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM, "BSSMAP-HANDOVER-REQUEST-ACK");
	if (!msg)
		return NULL;

	/* Message Type, 3.2.2.1 */
	msgb_v_put(msg, BSS_MAP_MSG_HANDOVER_RQST_ACKNOWLEDGE);

	/* Layer 3 Information, 3.2.2.24 */
	msgb_tlv_put(msg, GSM0808_IE_LAYER_3_INFORMATION, l3_info_len, l3_info);

	msgb_tv_put(msg, GSM0808_IE_CHOSEN_CHANNEL, chosen_channel);
	msgb_tv_put(msg, GSM0808_IE_CHOSEN_ENCR_ALG, chosen_encr_alg);
	if (chosen_speech_version != 0)
		msgb_tv_put(msg, GSM0808_IE_SPEECH_VERSION, chosen_speech_version);

	/* prepend header with final length */
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP HANDOVER DETECT message, 3GPP TS 48.008 3.2.1.40.
 * Sent from the MT BSC back to the MSC when the MS has sent a handover RACH request and the MT BSC has
 * received the Handover Detect message. */
struct msgb *gsm0808_create_handover_detect()
{
	struct msgb *msg;

	msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM, "BSSMAP-HANDOVER-DETECT");
	if (!msg)
		return NULL;

	/* Message Type, 3.2.2.1 */
	msgb_v_put(msg, BSS_MAP_MSG_HANDOVER_DETECT);

	/* prepend header with final length */
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP HANDOVER COMPLETE message, 3GPP TS 48.008 3.2.1.12.
 * Sent from the MT BSC back to the MSC when the MS has fully settled into the new lchan. */
struct msgb *gsm0808_create_handover_complete(const struct gsm0808_handover_complete *params)
{
	struct msgb *msg;

	msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM, "BSSMAP-HANDOVER-COMPLETE");
	if (!msg)
		return NULL;

	/* Message Type, 3.2.2.1 */
	msgb_v_put(msg, BSS_MAP_MSG_HANDOVER_COMPLETE);

	/* RR Cause, 3.2.2.22 */
	if (params->rr_cause_present)
		msgb_tlv_put(msg, GSM0808_IE_RR_CAUSE, 1, &params->rr_cause);

	/* AoIP: Speech Codec (Chosen) 3.2.2.104 */
	if (params->speech_codec_chosen_present)
		gsm0808_enc_speech_codec(msg, &params->speech_codec_chosen);

	/* AoIP: add Codec List (BSS Supported) 3.2.2.103 */
	if (params->codec_list_bss_supported.len)
		gsm0808_enc_speech_codec_list(msg, &params->codec_list_bss_supported);

	/* Chosen Encryption Algorithm 3.2.2.44 */
	if (params->chosen_encr_alg_present)
		msgb_tv_put(msg, GSM0808_IE_CHOSEN_ENCR_ALG, params->chosen_encr_alg);

	/* LCLS-BSS-Status 3.2.2.119 */
	if (params->lcls_bss_status_present)
		msgb_tv_put(msg, GSM0808_IE_LCLS_BSS_STATUS, params->lcls_bss_status);

	/* prepend header with final length */
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Create BSSMAP HANDOVER FAILURE message, 3GPP TS 48.008 3.2.1.16.
 * Sent from the MT BSC back to the MSC when the handover has failed. */
struct msgb *gsm0808_create_handover_failure(const struct gsm0808_handover_failure *params)
{
	struct msgb *msg;

	msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM, "BSSMAP-HANDOVER-FAILURE");
	if (!msg)
		return NULL;

	/* Message Type, 3.2.2.1 */
	msgb_v_put(msg, BSS_MAP_MSG_HANDOVER_FAILURE);

	/* Cause, 3.2.2.5 */
	msgb_tlv_put(msg, GSM0808_IE_CAUSE, params->cause & 0x80? 2 : 1, (const uint8_t*)&params->cause);

	/* RR Cause, 3.2.2.22 */
	if (params->rr_cause_present)
		msgb_tlv_put(msg, GSM0808_IE_RR_CAUSE, 1, &params->rr_cause);

	/* AoIP: add Codec List (BSS Supported) 3.2.2.103 */
	if (params->codec_list_bss_supported.len)
		gsm0808_enc_speech_codec_list(msg, &params->codec_list_bss_supported);

	/* prepend header with final length */
	msg->l3h = msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));

	return msg;
}

/*! Prepend a DTAP header to given Message Buffer
 *  \param[in] msgb Message Buffer
 *  \param[in] link_id Link Identifier */
void gsm0808_prepend_dtap_header(struct msgb *msg, uint8_t link_id)
{
	uint8_t *hh = msgb_push(msg, 3);
	hh[0] = BSSAP_MSG_DTAP;
	hh[1] = link_id;
	hh[2] = msg->len - 3;
}

/*! Create BSSMAP DTAP message
 *  \param[in] msg_l3 Messge Buffer containing Layer3 message
 *  \param[in] link_id Link Identifier
 *  \returns callee-allocated msgb with BSSMAP DTAP message */
struct msgb *gsm0808_create_dtap(struct msgb *msg_l3, uint8_t link_id)
{
	struct dtap_header *header;
	uint8_t *data;
	struct msgb *msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
					       "dtap");
	if (!msg)
		return NULL;

	/* DTAP header */
	msg->l3h = msgb_put(msg, sizeof(*header));
	header = (struct dtap_header *) &msg->l3h[0];
	header->type = BSSAP_MSG_DTAP;
	header->link_id = link_id;
	header->length = msgb_l3len(msg_l3);

	/* Payload */
	data = msgb_put(msg, header->length);
	memcpy(data, msg_l3->l3h, header->length);

	return msg;
}

/* As per 3GPP TS 48.008 version 11.7.0 Release 11 */
static const struct tlv_definition bss_att_tlvdef = {
	.def = {
		[GSM0808_IE_CIRCUIT_IDENTITY_CODE]  = { TLV_TYPE_FIXED, 2 },
		[GSM0808_IE_CONNECTION_RELEASE_RQSTED]	= { TLV_TYPE_TV },
		[GSM0808_IE_RESOURCE_AVAILABLE]		= { TLV_TYPE_FIXED, 21 },
		[GSM0808_IE_CAUSE]			= { TLV_TYPE_TLV },
		[GSM0808_IE_IMSI]		    = { TLV_TYPE_TLV },
		[GSM0808_IE_TMSI]		    = { TLV_TYPE_TLV },
		[GSM0808_IE_NUMBER_OF_MSS]		= { TLV_TYPE_TV },
		[GSM0808_IE_LAYER_3_HEADER_INFORMATION] = { TLV_TYPE_TLV },
		[GSM0808_IE_ENCRYPTION_INFORMATION] = { TLV_TYPE_TLV },
		[GSM0808_IE_CHANNEL_TYPE]	    = { TLV_TYPE_TLV },
		[GSM0808_IE_PERIODICITY]		= { TLV_TYPE_TV },
		[GSM0808_IE_EXTENDED_RESOURCE_INDICATOR]= { TLV_TYPE_TV },
		[GSM0808_IE_TOTAL_RESOURCE_ACCESSIBLE]	= { TLV_TYPE_FIXED, 4 },
		[GSM0808_IE_LSA_IDENTIFIER]		= { TLV_TYPE_TLV },
		[GSM0808_IE_LSA_IDENTIFIER_LIST]	= { TLV_TYPE_TLV },
		[GSM0808_IE_LSA_INFORMATION]	= { TLV_TYPE_TLV },
		[GSM0808_IE_CELL_IDENTIFIER]	    = { TLV_TYPE_TLV },
		[GSM0808_IE_PRIORITY]		    = { TLV_TYPE_TLV },
		[GSM0808_IE_CLASSMARK_INFORMATION_T2] = { TLV_TYPE_TLV },
		[GSM0808_IE_CLASSMARK_INFORMATION_T3] = { TLV_TYPE_TLV },
		[GSM0808_IE_INTERFERENCE_BAND_TO_USE] = { TLV_TYPE_TV },
		[GSM0808_IE_RR_CAUSE]			= { TLV_TYPE_TV },
		[GSM0808_IE_LAYER_3_INFORMATION]    = { TLV_TYPE_TLV },
		[GSM0808_IE_DLCI]			= { TLV_TYPE_TV },
		[GSM0808_IE_DOWNLINK_DTX_FLAG]	    = { TLV_TYPE_TV },
		[GSM0808_IE_CELL_IDENTIFIER_LIST]   = { TLV_TYPE_TLV },
		[GSM0808_IE_CELL_ID_LIST_SEGMENT]	= { TLV_TYPE_TLV },
		[GSM0808_IE_CELL_ID_LIST_SEG_EST_CELLS]	= { TLV_TYPE_TLV },
		[GSM0808_IE_CELL_ID_LIST_SEG_CELLS_TBE]	= { TLV_TYPE_TLV },
		[GSM0808_IE_CELL_ID_LIST_SEG_REL_CELLS]	= { TLV_TYPE_TLV },
		[GSM0808_IE_CELL_ID_LIST_SEG_NE_CELLS]	= { TLV_TYPE_TLV },
		[GSM0808_IE_RESPONSE_RQST]		= { TLV_TYPE_T },
		[GSM0808_IE_RESOURCE_INDICATION_METHOD]	= { TLV_TYPE_TV },
		[GSM0808_IE_CLASSMARK_INFORMATION_TYPE_1] = { TLV_TYPE_TV },
		[GSM0808_IE_CIRCUIT_IDENTITY_CODE_LIST]	= { TLV_TYPE_TLV },
		[GSM0808_IE_DIAGNOSTIC]			= { TLV_TYPE_TLV },
		[GSM0808_IE_CHOSEN_CHANNEL]	    = { TLV_TYPE_TV },
		[GSM0808_IE_CIPHER_RESPONSE_MODE]   = { TLV_TYPE_TV },
		[GSM0808_IE_LAYER_3_MESSAGE_CONTENTS] = { TLV_TYPE_TLV },
		[GSM0808_IE_CHANNEL_NEEDED]	    = { TLV_TYPE_TV },
		[GSM0808_IE_TRACE_TYPE]			= { TLV_TYPE_TV },
		[GSM0808_IE_TRIGGERID]			= { TLV_TYPE_TLV },
		[GSM0808_IE_TRACE_REFERENCE]		= { TLV_TYPE_TV },
		[GSM0808_IE_TRANSACTIONID]		= { TLV_TYPE_TLV },
		[GSM0808_IE_MOBILE_IDENTITY]		= { TLV_TYPE_TLV },
		[GSM0808_IE_OMCID]			= { TLV_TYPE_TLV },
		[GSM0808_IE_FORWARD_INDICATOR]		= { TLV_TYPE_TV },
		[GSM0808_IE_CHOSEN_ENCR_ALG]        = { TLV_TYPE_TV },
		[GSM0808_IE_CIRCUIT_POOL]		= { TLV_TYPE_TV },
		[GSM0808_IE_CIRCUIT_POOL_LIST]		= { TLV_TYPE_TLV },
		[GSM0808_IE_TIME_INDICATION]		= { TLV_TYPE_TV },
		[GSM0808_IE_RESOURCE_SITUATION]		= { TLV_TYPE_TLV },
		[GSM0808_IE_CURRENT_CHANNEL_TYPE_1]	= { TLV_TYPE_TV },
		[GSM0808_IE_QUEUEING_INDICATOR]		= { TLV_TYPE_TV },
		[GSM0808_IE_SPEECH_VERSION]         = { TLV_TYPE_TV },
		[GSM0808_IE_ASSIGNMENT_REQUIREMENT]	= { TLV_TYPE_TV },
		[GSM0808_IE_TALKER_FLAG]	    = { TLV_TYPE_T },
		[GSM0808_IE_GROUP_CALL_REFERENCE]   = { TLV_TYPE_TLV },
		[GSM0808_IE_EMLPP_PRIORITY]	    = { TLV_TYPE_TV },
		[GSM0808_IE_CONFIG_EVO_INDI]	    = { TLV_TYPE_TV },
		[GSM0808_IE_OLD_BSS_TO_NEW_BSS_INFORMATION] = { TLV_TYPE_TLV },
		[GSM0808_IE_LCS_QOS]			= { TLV_TYPE_TLV },
		[GSM0808_IE_LSA_ACCESS_CTRL_SUPPR]  = { TLV_TYPE_TV },
		[GSM0808_IE_LCS_PRIORITY]		= { TLV_TYPE_TLV },
		[GSM0808_IE_LOCATION_TYPE]		= { TLV_TYPE_TLV },
		[GSM0808_IE_LOCATION_ESTIMATE]		= { TLV_TYPE_TLV },
		[GSM0808_IE_POSITIONING_DATA]		= { TLV_TYPE_TLV },
		[GSM0808_IE_LCS_CAUSE]			= { TLV_TYPE_TLV },
		[GSM0808_IE_APDU]			= { TLV_TYPE_TLV },
		[GSM0808_IE_NETWORK_ELEMENT_IDENTITY]	= { TLV_TYPE_TLV },
		[GSM0808_IE_GPS_ASSISTANCE_DATA]	= { TLV_TYPE_TLV },
		[GSM0808_IE_DECIPHERING_KEYS]		= { TLV_TYPE_TLV },
		[GSM0808_IE_RETURN_ERROR_RQST]		= { TLV_TYPE_TLV },
		[GSM0808_IE_RETURN_ERROR_CAUSE]		= { TLV_TYPE_TLV },
		[GSM0808_IE_SEGMENTATION]		= { TLV_TYPE_TLV },
		[GSM0808_IE_SERVICE_HANDOVER]	    = { TLV_TYPE_TLV },
		[GSM0808_IE_SOURCE_RNC_TO_TARGET_RNC_TRANSPARENT_UMTS]		= { TLV_TYPE_TLV },
		[GSM0808_IE_SOURCE_RNC_TO_TARGET_RNC_TRANSPARENT_CDMA2000]	= { TLV_TYPE_TLV },
		[GSM0808_IE_GERAN_CLASSMARK]		= { TLV_TYPE_TLV },
		[GSM0808_IE_GERAN_BSC_CONTAINER]	= { TLV_TYPE_TLV },
		[GSM0808_IE_NEW_BSS_TO_OLD_BSS_INFO]	= { TLV_TYPE_TLV },
		[GSM0800_IE_INTER_SYSTEM_INFO]		= { TLV_TYPE_TLV },
		[GSM0808_IE_SNA_ACCESS_INFO]		= { TLV_TYPE_TLV },
		[GSM0808_IE_VSTK_RAND_INFO]		= { TLV_TYPE_TLV },
		[GSM0808_IE_PAGING_INFO]		= { TLV_TYPE_TV },
		[GSM0808_IE_IMEI]			= { TLV_TYPE_TLV },
		[GSM0808_IE_VELOCITY_ESTIMATE]		= { TLV_TYPE_TLV },
		[GSM0808_IE_VGCS_FEATURE_FLAGS]		= { TLV_TYPE_TLV },
		[GSM0808_IE_TALKER_PRIORITY]		= { TLV_TYPE_TV },
		[GSM0808_IE_EMERGENCY_SET_INDICATION]	= { TLV_TYPE_T },
		[GSM0808_IE_TALKER_IDENTITY]		= { TLV_TYPE_TLV },
		[GSM0808_IE_SMS_TO_VGCS]		= { TLV_TYPE_TLV },
		[GSM0808_IE_VGCS_TALKER_MODE]		= { TLV_TYPE_TLV },
		[GSM0808_IE_VGCS_VBS_CELL_STATUS]	= { TLV_TYPE_TLV },
		[GSM0808_IE_GANSS_ASSISTANCE_DATA]	= { TLV_TYPE_TLV },
		[GSM0808_IE_GANSS_POSITIONING_DATA]	= { TLV_TYPE_TLV },
		[GSM0808_IE_GANSS_LOCATION_TYPE]	= { TLV_TYPE_TLV },
		[GSM0808_IE_APP_DATA]			= { TLV_TYPE_TLV },
		[GSM0808_IE_DATA_IDENTITY]		= { TLV_TYPE_TLV },
		[GSM0808_IE_APP_DATA_INFO]		= { TLV_TYPE_TLV },
		[GSM0808_IE_MSISDN]			= { TLV_TYPE_TLV },
		[GSM0808_IE_AOIP_TRASP_ADDR]		= { TLV_TYPE_TLV },
		[GSM0808_IE_SPEECH_CODEC_LIST]		= { TLV_TYPE_TLV },
		[GSM0808_IE_SPEECH_CODEC]		= { TLV_TYPE_TLV },
		[GSM0808_IE_CALL_ID]			= { TLV_TYPE_FIXED, 4 },
		[GSM0808_IE_CALL_ID_LIST]		= { TLV_TYPE_TLV },
		[GSM0808_IE_A_IF_SEL_FOR_RESET]		= { TLV_TYPE_TV },
		[GSM0808_IE_KC_128]			= { TLV_TYPE_FIXED, 16 },
		[GSM0808_IE_CSG_IDENTIFIER]		= { TLV_TYPE_TLV },
		[GSM0808_IE_REDIR_ATTEMPT_FLAG]		= { TLV_TYPE_T },
		[GSM0808_IE_REROUTE_REJ_CAUSE]		= { TLV_TYPE_TV },
		[GSM0808_IE_SEND_SEQ_NUM]		= { TLV_TYPE_TV },
		[GSM0808_IE_REROUTE_COMPL_OUTCOME]	= { TLV_TYPE_TV },
		[GSM0808_IE_GLOBAL_CALL_REF]		= { TLV_TYPE_TLV },
		[GSM0808_IE_LCLS_CONFIG]		= { TLV_TYPE_TV },
		[GSM0808_IE_LCLS_CONN_STATUS_CTRL]	= { TLV_TYPE_TV },
		[GSM0808_IE_LCLS_CORR_NOT_NEEDED]	= { TLV_TYPE_TV },
		[GSM0808_IE_LCLS_BSS_STATUS]		= { TLV_TYPE_TV },
		[GSM0808_IE_LCLS_BREAK_REQ]		= { TLV_TYPE_TV },
		[GSM0808_IE_CSFB_INDICATION]		= { TLV_TYPE_T },
		[GSM0808_IE_CS_TO_PS_SRVCC]		= { TLV_TYPE_T },
		[GSM0808_IE_SRC_ENB_TO_TGT_ENB_TRANSP]	= { TLV_TYPE_TLV },
		[GSM0808_IE_CS_TO_PS_SRVCC_IND]		= { TLV_TYPE_T },
		[GSM0808_IE_CN_TO_MS_TRANSP_INFO]	= { TLV_TYPE_TLV },
		[GSM0808_IE_SELECTED_PLMN_ID]		= { TLV_TYPE_FIXED, 3 },
		[GSM0808_IE_LAST_USED_EUTRAN_PLMN_ID]	= { TLV_TYPE_FIXED, 3 },
	},
};

const struct tlv_definition *gsm0808_att_tlvdef(void)
{
	return &bss_att_tlvdef;
}

static const struct value_string gsm0808_msgt_names[] = {
	{ BSS_MAP_MSG_ASSIGMENT_RQST,		"ASSIGNMENT REQ" },
	{ BSS_MAP_MSG_ASSIGMENT_COMPLETE,	"ASSIGNMENT COMPL" },
	{ BSS_MAP_MSG_ASSIGMENT_FAILURE,	"ASSIGNMENT FAIL" },
	{ BSS_MAP_MSG_CHAN_MOD_RQST,		"CHANNEL MODIFY REQUEST" },

	{ BSS_MAP_MSG_HANDOVER_RQST,		"HANDOVER REQ" },
	{ BSS_MAP_MSG_HANDOVER_REQUIRED,	"HANDOVER REQUIRED" },
	{ BSS_MAP_MSG_HANDOVER_RQST_ACKNOWLEDGE,"HANDOVER REQ ACK" },
	{ BSS_MAP_MSG_HANDOVER_CMD,		"HANDOVER CMD" },
	{ BSS_MAP_MSG_HANDOVER_COMPLETE,	"HANDOVER COMPLETE" },
	{ BSS_MAP_MSG_HANDOVER_SUCCEEDED,	"HANDOVER SUCCESS" },
	{ BSS_MAP_MSG_HANDOVER_FAILURE,		"HANDOVER FAILURE" },
	{ BSS_MAP_MSG_HANDOVER_PERFORMED,	"HANDOVER PERFORMED" },
	{ BSS_MAP_MSG_HANDOVER_CANDIDATE_ENQUIRE, "HANDOVER CAND ENQ" },
	{ BSS_MAP_MSG_HANDOVER_CANDIDATE_RESPONSE, "HANDOVER CAND RESP" },
	{ BSS_MAP_MSG_HANDOVER_REQUIRED_REJECT,	"HANDOVER REQ REJ" },
	{ BSS_MAP_MSG_HANDOVER_DETECT,		"HANDOVER DETECT" },
	{ BSS_MAP_MSG_INT_HANDOVER_REQUIRED,	"INT HANDOVER REQ" },
	{ BSS_MAP_MSG_INT_HANDOVER_REQUIRED_REJ,"INT HANDOVER REQ REJ" },
	{ BSS_MAP_MSG_INT_HANDOVER_CMD,		"INT HANDOVER CMD" },
	{ BSS_MAP_MSG_INT_HANDOVER_ENQUIRY,	"INT HANDOVER ENQ" },

	{ BSS_MAP_MSG_CLEAR_CMD,		"CLEAR COMMAND" },
	{ BSS_MAP_MSG_CLEAR_COMPLETE,		"CLEAR COMPLETE" },
	{ BSS_MAP_MSG_CLEAR_RQST,		"CLEAR REQUEST" },
	{ BSS_MAP_MSG_SAPI_N_REJECT,		"SAPI N REJECT" },
	{ BSS_MAP_MSG_CONFUSION,		"CONFUSION" },

	{ BSS_MAP_MSG_SUSPEND,			"SUSPEND" },
	{ BSS_MAP_MSG_RESUME,			"RESUME" },
	{ BSS_MAP_MSG_CONNECTION_ORIENTED_INFORMATION, "CONN ORIENT INFO" },
	{ BSS_MAP_MSG_PERFORM_LOCATION_RQST,	"PERFORM LOC REQ" },
	{ BSS_MAP_MSG_LSA_INFORMATION,		"LSA INFORMATION" },
	{ BSS_MAP_MSG_PERFORM_LOCATION_RESPONSE, "PERFORM LOC RESP" },
	{ BSS_MAP_MSG_PERFORM_LOCATION_ABORT,	"PERFORM LOC ABORT" },
	{ BSS_MAP_MSG_COMMON_ID,		"COMMON ID" },
	{ BSS_MAP_MSG_REROUTE_CMD,		"REROUTE COMMAND" },
	{ BSS_MAP_MSG_REROUTE_COMPLETE,		"REROUTE COMPLETE" },

	{ BSS_MAP_MSG_RESET,			"RESET" },
	{ BSS_MAP_MSG_RESET_ACKNOWLEDGE,	"RESET ACK" },
	{ BSS_MAP_MSG_OVERLOAD,			"OVERLOAD" },
	{ BSS_MAP_MSG_RESET_CIRCUIT,		"RESET CIRCUIT" },
	{ BSS_MAP_MSG_RESET_CIRCUIT_ACKNOWLEDGE, "RESET CIRCUIT ACK" },
	{ BSS_MAP_MSG_MSC_INVOKE_TRACE,		"MSC INVOKE TRACE" },
	{ BSS_MAP_MSG_BSS_INVOKE_TRACE,		"BSS INVOKE TRACE" },
	{ BSS_MAP_MSG_CONNECTIONLESS_INFORMATION, "CONNLESS INFO" },
	{ BSS_MAP_MSG_RESET_IP_RSRC,		"RESET IP RESOURCE" },
	{ BSS_MAP_MSG_RESET_IP_RSRC_ACK,	"RESET IP RESOURCE ACK" },

	{ BSS_MAP_MSG_BLOCK,			"BLOCK" },
	{ BSS_MAP_MSG_BLOCKING_ACKNOWLEDGE,	"BLOCK ACK" },
	{ BSS_MAP_MSG_UNBLOCK,			"UNBLOCK" },
	{ BSS_MAP_MSG_UNBLOCKING_ACKNOWLEDGE,	"UNBLOCK ACK" },
	{ BSS_MAP_MSG_CIRCUIT_GROUP_BLOCK,	"CIRC GROUP BLOCK" },
	{ BSS_MAP_MSG_CIRCUIT_GROUP_BLOCKING_ACKNOWLEDGE, "CIRC GORUP BLOCK ACK" },
	{ BSS_MAP_MSG_CIRCUIT_GROUP_UNBLOCK,	"CIRC GROUP UNBLOCK" },
	{ BSS_MAP_MSG_CIRCUIT_GROUP_UNBLOCKING_ACKNOWLEDGE, "CIRC GROUP UNBLOCK ACK" },
	{ BSS_MAP_MSG_UNEQUIPPED_CIRCUIT,	"UNEQUIPPED CIRCUIT" },
	{ BSS_MAP_MSG_CHANGE_CIRCUIT,		"CHANGE CIRCUIT" },
	{ BSS_MAP_MSG_CHANGE_CIRCUIT_ACKNOWLEDGE, "CHANGE CIRCUIT ACK" },

	{ BSS_MAP_MSG_RESOURCE_RQST,		"RESOURCE REQ" },
	{ BSS_MAP_MSG_RESOURCE_INDICATION,	"RESOURCE IND" },
	{ BSS_MAP_MSG_PAGING,			"PAGING" },
	{ BSS_MAP_MSG_CIPHER_MODE_CMD,		"CIPHER MODE CMD" },
	{ BSS_MAP_MSG_CLASSMARK_UPDATE,		"CLASSMARK UPDATE" },
	{ BSS_MAP_MSG_CIPHER_MODE_COMPLETE,	"CIPHER MODE COMPLETE" },
	{ BSS_MAP_MSG_QUEUING_INDICATION,	"QUEUING INDICATION" },
	{ BSS_MAP_MSG_COMPLETE_LAYER_3,		"COMPLETE LAYER 3" },
	{ BSS_MAP_MSG_CLASSMARK_RQST,		"CLASSMARK REQ" },
	{ BSS_MAP_MSG_CIPHER_MODE_REJECT,	"CIPHER MODE REJECT" },
	{ BSS_MAP_MSG_LOAD_INDICATION,		"LOAD IND" },

	{ BSS_MAP_MSG_VGCS_VBS_SETUP,		"VGCS/VBS SETUP" },
	{ BSS_MAP_MSG_VGCS_VBS_SETUP_ACK,	"VGCS/VBS SETUP ACK" },
	{ BSS_MAP_MSG_VGCS_VBS_SETUP_REFUSE,	"VGCS/VBS SETUP REFUSE" },
	{ BSS_MAP_MSG_VGCS_VBS_ASSIGNMENT_RQST,	"VGCS/VBS ASSIGN REQ" },
	{ BSS_MAP_MSG_VGCS_VBS_ASSIGNMENT_RESULT, "VGCS/VBS ASSIGN RES" },
	{ BSS_MAP_MSG_VGCS_VBS_ASSIGNMENT_FAILURE, "VGCS/VBS ASSIGN FAIL" },
	{ BSS_MAP_MSG_VGCS_VBS_QUEUING_INDICATION, "VGCS/VBS QUEUING IND" },
	{ BSS_MAP_MSG_UPLINK_RQST,		"UPLINK REQ" },
	{ BSS_MAP_MSG_UPLINK_RQST_ACKNOWLEDGE,	"UPLINK REQ ACK" },
	{ BSS_MAP_MSG_UPLINK_RQST_CONFIRMATION,	"UPLINK REQ CONF" },
	{ BSS_MAP_MSG_UPLINK_RELEASE_INDICATION,"UPLINK REL IND" },
	{ BSS_MAP_MSG_UPLINK_REJECT_CMD,	"UPLINK REJ CMD" },
	{ BSS_MAP_MSG_UPLINK_RELEASE_CMD,	"UPLINK REL CMD" },
	{ BSS_MAP_MSG_UPLINK_SEIZED_CMD,	"UPLINK SEIZED CMD" },
	{ BSS_MAP_MSG_VGCS_ADDL_INFO,		"VGCS ADDL INFO" },
	{ BSS_MAP_MSG_NOTIFICATION_DATA,	"NOTIF DATA" },
	{ BSS_MAP_MSG_UPLINK_APP_DATA,		"UPLINK APP DATA" },

	{ BSS_MAP_MSG_LCLS_CONNECT_CTRL,	"LCLS-CONNECT-CONTROL" },
	{ BSS_MAP_MSG_LCLS_CONNECT_CTRL_ACK,	"CLS-CONNECT-CONTROL-ACK" },
	{ BSS_MAP_MSG_LCLS_NOTIFICATION,	"LCLS-NOTIFICATION" },

	{ 0, NULL }
};

/*! Return string name of BSSMAP Message Type */
const char *gsm0808_bssmap_name(uint8_t msg_type)
{
	return get_value_string(gsm0808_msgt_names, msg_type);
}

static const struct value_string gsm0808_bssap_names[] = {
	{ BSSAP_MSG_BSS_MANAGEMENT, 		"MANAGEMENT" },
	{ BSSAP_MSG_DTAP,			"DTAP" },
	{ 0, NULL }
};

/*! Return string name of BSSAP Message Type */
const char *gsm0808_bssap_name(uint8_t msg_type)
{
	return get_value_string(gsm0808_bssap_names, msg_type);
}

const struct value_string gsm0808_speech_codec_type_names[] = {
	{ GSM0808_SCT_FR1, "FR1" },
	{ GSM0808_SCT_FR2, "FR2" },
	{ GSM0808_SCT_FR3, "FR3" },
	{ GSM0808_SCT_FR4, "FR4" },
	{ GSM0808_SCT_FR5, "FR5" },
	{ GSM0808_SCT_HR1, "HR1" },
	{ GSM0808_SCT_HR3, "HR3" },
	{ GSM0808_SCT_HR4, "HR4" },
	{ GSM0808_SCT_HR6, "HR6" },
	{ GSM0808_SCT_CSD, "CSD" },
	{ 0, NULL }
};

const struct value_string gsm0808_permitted_speech_names[] = {
	{ GSM0808_PERM_FR1, "FR1" },
	{ GSM0808_PERM_FR2, "FR2" },
	{ GSM0808_PERM_FR3, "FR3" },
	{ GSM0808_PERM_FR4, "FR4" },
	{ GSM0808_PERM_FR5, "FR5" },
	{ GSM0808_PERM_HR1, "HR1" },
	{ GSM0808_PERM_HR2, "HR2" },
	{ GSM0808_PERM_HR3, "HR3" },
	{ GSM0808_PERM_HR4, "HR4" },
	{ GSM0808_PERM_HR6, "HR6" },
	{ 0, NULL }
};

const struct value_string gsm0808_chosen_enc_alg_names[] = {
	{ GSM0808_ALG_ID_A5_0, "A5/0" },
	{ GSM0808_ALG_ID_A5_1, "A5/1" },
	{ GSM0808_ALG_ID_A5_2, "A5/2" },
	{ GSM0808_ALG_ID_A5_3, "A5/3" },
	{ GSM0808_ALG_ID_A5_4, "A5/4" },
	{ GSM0808_ALG_ID_A5_5, "A5/5" },
	{ GSM0808_ALG_ID_A5_6, "A5/6" },
	{ GSM0808_ALG_ID_A5_7, "A5/7" },
	{ 0, NULL }
};

static const struct value_string gsm0808_cause_names[] = {
	{ GSM0808_CAUSE_RADIO_INTERFACE_MESSAGE_FAILURE, "RADIO INTERFACE MESSAGE FAILURE" },
	{ GSM0808_CAUSE_RADIO_INTERFACE_FAILURE, "RADIO INTERFACE FAILURE" },
	{ GSM0808_CAUSE_UPLINK_QUALITY, "UPLINK QUALITY" },
	{ GSM0808_CAUSE_UPLINK_STRENGTH, "UPLINK STRENGTH" },
	{ GSM0808_CAUSE_DOWNLINK_QUALITY, "DOWNLINK QUALITY" },
	{ GSM0808_CAUSE_DOWNLINK_STRENGTH, "DOWNLINK STRENGTH" },
	{ GSM0808_CAUSE_DISTANCE, "DISTANCE" },
	{ GSM0808_CAUSE_O_AND_M_INTERVENTION, "O AND M INTERVENTION" },
	{ GSM0808_CAUSE_RESPONSE_TO_MSC_INVOCATION, "RESPONSE TO MSC INVOCATION" },
	{ GSM0808_CAUSE_CALL_CONTROL, "CALL CONTROL" },
	{ GSM0808_CAUSE_RADIO_INTERFACE_FAILURE_REVERSION, "RADIO INTERFACE FAILURE REVERSION" },
	{ GSM0808_CAUSE_HANDOVER_SUCCESSFUL, "HANDOVER SUCCESSFUL" },
	{ GSM0808_CAUSE_BETTER_CELL, "BETTER CELL" },
	{ GSM0808_CAUSE_DIRECTED_RETRY, "DIRECTED RETRY" },
	{ GSM0808_CAUSE_JOINED_GROUP_CALL_CHANNEL, "JOINED GROUP CALL CHANNEL" },
	{ GSM0808_CAUSE_TRAFFIC, "TRAFFIC" },
	{ GSM0808_CAUSE_REDUCE_LOAD_IN_SERVING_CELL, "REDUCE LOAD IN SERVING CELL" },
	{ GSM0808_CAUSE_TRAFFIC_LOAD_IN_TGT_HIGHER_THAN_IN_SRC_CELL, "TRAFFIC LOAD IN TGT HIGHER THAN IN SRC CELL" },
	{ GSM0808_CAUSE_RELOCATION_TRIGGERED, "RELOCATION TRIGGERED" },
	{ GSM0808_CAUSE_REQUESTED_OPT_NOT_AUTHORISED, "REQUESTED OPT NOT AUTHORISED" },
	{ GSM0808_CAUSE_ALT_CHAN_CONFIG_REQUESTED, "ALT CHAN CONFIG REQUESTED" },
	{ GSM0808_CAUSE_RESP_TO_INT_HO_ENQ_MSG, "RESP TO INT HO ENQ MSG" },
	{ GSM0808_CAUSE_INT_HO_ENQUIRY_REJECT, "INT HO ENQUIRY REJECT" },
	{ GSM0808_CAUSE_REDUNDANCY_LEVEL_NOT_ADEQUATE, "REDUNDANCY LEVEL NOT ADEQUATE" },
	{ GSM0808_CAUSE_EQUIPMENT_FAILURE, "EQUIPMENT FAILURE" },
	{ GSM0808_CAUSE_NO_RADIO_RESOURCE_AVAILABLE, "NO RADIO RESOURCE AVAILABLE" },
	{ GSM0808_CAUSE_RQSTED_TERRESTRIAL_RESOURCE_UNAVAILABLE, "RQSTED TERRESTRIAL RESOURCE UNAVAILABLE" },
	{ GSM0808_CAUSE_CCCH_OVERLOAD, "CCCH OVERLOAD" },
	{ GSM0808_CAUSE_PROCESSOR_OVERLOAD, "PROCESSOR OVERLOAD" },
	{ GSM0808_CAUSE_BSS_NOT_EQUIPPED, "BSS NOT EQUIPPED" },
	{ GSM0808_CAUSE_MS_NOT_EQUIPPED, "MS NOT EQUIPPED" },
	{ GSM0808_CAUSE_INVALID_CELL, "INVALID CELL" },
	{ GSM0808_CAUSE_TRAFFIC_LOAD, "TRAFFIC LOAD" },
	{ GSM0808_CAUSE_PREEMPTION, "PREEMPTION" },
	{ GSM0808_CAUSE_DTM_HO_SGSN_FAILURE, "DTM HO SGSN FAILURE" },
	{ GSM0808_CAUSE_DTM_HO_PS_ALLOC_FAILURE, "DTM HO PS ALLOC FAILURE" },
	{ GSM0808_CAUSE_RQSTED_TRANSCODING_RATE_ADAPTION_UNAVAILABLE, "RQSTED TRANSCODING RATE ADAPTION UNAVAILABLE" },
	{ GSM0808_CAUSE_CIRCUIT_POOL_MISMATCH, "CIRCUIT POOL MISMATCH" },
	{ GSM0808_CAUSE_SWITCH_CIRCUIT_POOL, "SWITCH CIRCUIT POOL" },
	{ GSM0808_CAUSE_RQSTED_SPEECH_VERSION_UNAVAILABLE, "RQSTED SPEECH VERSION UNAVAILABLE" },
	{ GSM0808_CAUSE_LSA_NOT_ALLOWED, "LSA NOT ALLOWED" },
	{ GSM0808_CAUSE_REQ_CODEC_TYPE_OR_CONFIG_UNAVAIL, "REQ CODEC TYPE OR CONFIG UNAVAIL" },
	{ GSM0808_CAUSE_REQ_A_IF_TYPE_UNAVAIL, "REQ A IF TYPE UNAVAIL" },
	{ GSM0808_CAUSE_INVALID_CSG_CELL, "INVALID CSG CELL" },
	{ GSM0808_CAUSE_REQ_REDUND_LEVEL_NOT_AVAIL, "REQ REDUND LEVEL NOT AVAIL" },
	{ GSM0808_CAUSE_CIPHERING_ALGORITHM_NOT_SUPPORTED, "CIPHERING ALGORITHM NOT SUPPORTED" },
	{ GSM0808_CAUSE_GERAN_IU_MODE_FAILURE, "GERAN IU MODE FAILURE" },
	{ GSM0808_CAUSE_INC_RELOC_NOT_SUPP_DT_PUESBINE_FEATURE, "INC RELOC NOT SUPP DT PUESBINE FEATURE" },
	{ GSM0808_CAUSE_ACCESS_RESTRICTED_DUE_TO_SHARED_NETWORKS, "ACCESS RESTRICTED DUE TO SHARED NETWORKS" },
	{ GSM0808_CAUSE_REQ_CODEC_TYPE_OR_CONFIG_NOT_SUPP, "REQ CODEC TYPE OR CONFIG NOT SUPP" },
	{ GSM0808_CAUSE_REQ_A_IF_TYPE_NOT_SUPP, "REQ A IF TYPE NOT SUPP" },
	{ GSM0808_CAUSE_REQ_REDUND_LVL_NOT_SUPP, "REQ REDUND LVL NOT SUPP" },
	{ GSM0808_CAUSE_TERRESTRIAL_CIRCUIT_ALREADY_ALLOCATED, "TERRESTRIAL CIRCUIT ALREADY ALLOCATED" },
	{ GSM0808_CAUSE_INVALID_MESSAGE_CONTENTS, "INVALID MESSAGE CONTENTS" },
	{ GSM0808_CAUSE_INFORMATION_ELEMENT_OR_FIELD_MISSING, "INFORMATION ELEMENT OR FIELD MISSING" },
	{ GSM0808_CAUSE_INCORRECT_VALUE, "INCORRECT VALUE" },
	{ GSM0808_CAUSE_UNKNOWN_MESSAGE_TYPE, "UNKNOWN MESSAGE TYPE" },
	{ GSM0808_CAUSE_UNKNOWN_INFORMATION_ELEMENT, "UNKNOWN INFORMATION ELEMENT" },
	{ GSM0808_CAUSE_DTM_HO_INVALID_PS_IND, "DTM HO INVALID PS IND" },
	{ GSM0808_CAUSE_CALL_ID_ALREADY_ALLOC, "CALL ID ALREADY ALLOC" },
	{ GSM0808_CAUSE_PROTOCOL_ERROR_BETWEEN_BSS_AND_MSC, "PROTOCOL ERROR BETWEEN BSS AND MSC" },
	{ GSM0808_CAUSE_VGCS_VBS_CALL_NON_EXISTENT, "VGCS VBS CALL NON EXISTENT" },
	{ GSM0808_CAUSE_DTM_HO_TIMER_EXPIRY, "DTM HO TIMER EXPIRY" },
	{ 0, NULL }
};

static const struct value_string gsm0808_cause_class_names[] = {
	{ GSM0808_CAUSE_CLASS_NORM0,		"Normal event" },
	{ GSM0808_CAUSE_CLASS_NORM1,		"Normal event" },
	{ GSM0808_CAUSE_CLASS_RES_UNAVAIL,	"Resource unavailable" },
	{ GSM0808_CAUSE_CLASS_SRV_OPT_NA,	"Service or option not available" },
	{ GSM0808_CAUSE_CLASS_SRV_OPT_NIMPL,	"Service or option not implemented" },
	{ GSM0808_CAUSE_CLASS_INVAL,		"Invalid message" },
	{ GSM0808_CAUSE_CLASS_PERR,		"Protocol error" },
	{ GSM0808_CAUSE_CLASS_INTW,		"Interworking" },
	{ 0, NULL }
};

/*! Return string name of BSSMAP Cause Class name */
const char *gsm0808_cause_class_name(enum gsm0808_cause_class class)
{
	return get_value_string(gsm0808_cause_class_names, class);
}

/*! Return string name of BSSMAP Cause name */
const char *gsm0808_cause_name(enum gsm0808_cause cause)
{
	return get_value_string(gsm0808_cause_names, cause);
}

const struct value_string gsm0808_lcls_config_names[] = {
	{ GSM0808_LCLS_CFG_BOTH_WAY, "Connect both-way" },
	{ GSM0808_LCLS_CFG_BOTH_WAY_AND_BICAST_UL,
	  "Connect both-way, bi-cast UL to CN" },
	{ GSM0808_LCLS_CFG_BOTH_WAY_AND_SEND_DL,
	  "Connect both-way, send access DL from CN" },
	{ GSM0808_LCLS_CFG_BOTH_WAY_AND_SEND_DL_BLOCK_LOCAL_DL,
	  "Connect both-way, send access DL from CN, block local DL" },
	{ GSM0808_LCLS_CFG_BOTH_WAY_AND_BICAST_UL_SEND_DL,
	  "Connect both-way, bi-cast UL to CN, send access DL from CN" },
	{ GSM0808_LCLS_CFG_BOTH_WAY_AND_BICAST_UL_SEND_DL_BLOCK_LOCAL_DL,
	  "Connect both-way, bi-cast UL to CN, send access DL from CN, block local DL" },
	{ GSM0808_LCLS_CFG_NA, "Not available" },
	{ 0, NULL }
};

const struct value_string gsm0808_lcls_control_names[] = {
	{ GSM0808_LCLS_CSC_CONNECT,				"Connect" },
	{ GSM0808_LCLS_CSC_DO_NOT_CONNECT,			"Do not connect" },
	{ GSM0808_LCLS_CSC_RELEASE_LCLS,			"Release LCLS" },
	{ GSM0808_LCLS_CSC_BICAST_UL_AT_HANDOVER,		"Bi-cast UL at Handover" },
	{ GSM0808_LCLS_CSC_BICAST_UL_AND_RECV_DL_AT_HANDOVER,	"Bi-cast UL and receive DL at Handover" },
	{ GSM0808_LCLS_CSC_NA,					"Not available" },
	{ 0, NULL }
};

const struct value_string gsm0808_lcls_status_names[] = {
	{ GSM0808_LCLS_STS_NOT_YET_LS,		"Call not yet locally switched" },
	{ GSM0808_LCLS_STS_NOT_POSSIBLE_LS,	"Call not possible to be locally switched" },
	{ GSM0808_LCLS_STS_NO_LONGER_LS,	"Call is no longer locally switched" },
	{ GSM0808_LCLS_STS_REQ_LCLS_NOT_SUPP,	"Requested LCLS configuration is not supported" },
	{ GSM0808_LCLS_STS_LOCALLY_SWITCHED,	"Call is locally switched with requested LCLS config" },
	{ GSM0808_LCLS_STS_NA,			"Not available" },
	{ 0, NULL }
};

/*! @} */