aboutsummaryrefslogtreecommitdiffstats
path: root/tests/handover/handover_test.c
blob: ca3fc6e518d840af3b126a52e68fc2f95a3b3107 (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
1707
1708
/*
 * (C) 2013 by Andreas Eversberg <jolly@eversberg.eu>
 * All Rights Reserved
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>

#include <assert.h>

#include <osmocom/core/application.h>
#include <osmocom/core/select.h>
#include <osmocom/core/talloc.h>

#include <osmocom/mgcp_client/mgcp_client_fsm.h>

#include <osmocom/bsc/abis_rsl.h>
#include <osmocom/bsc/debug.h>
#include <osmocom/bsc/bsc_subscriber.h>
#include <osmocom/bsc/lchan_select.h>
#include <osmocom/bsc/lchan_fsm.h>
#include <osmocom/bsc/handover_decision.h>
#include <osmocom/bsc/system_information.h>
#include <osmocom/bsc/handover_cfg.h>
#include <osmocom/bsc/handover_decision_2.h>
#include <osmocom/bsc/bss.h>
#include <osmocom/bsc/bsc_api.h>
#include <osmocom/bsc/osmo_bsc.h>
#include <osmocom/bsc/bsc_subscr_conn_fsm.h>
#include <osmocom/bsc/timeslot_fsm.h>
#include <osmocom/bsc/mgw_endpoint_fsm.h>

void *ctx;

struct gsm_network *bsc_gsmnet;

/* override, requires '-Wl,--wrap=mgw_endpoint_ci_request'.
 * Catch modification of an MGCP connection. */
void __real_mgw_endpoint_ci_request(struct mgwep_ci *ci,
				    enum mgcp_verb verb, const struct mgcp_conn_peer *verb_info,
				    struct osmo_fsm_inst *notify,
				    uint32_t event_success, uint32_t event_failure,
				    void *notify_data);
void __wrap_mgw_endpoint_ci_request(struct mgwep_ci *ci,
				    enum mgcp_verb verb, const struct mgcp_conn_peer *verb_info,
				    struct osmo_fsm_inst *notify,
				    uint32_t event_success, uint32_t event_failure,
				    void *notify_data)
{
	struct mgcp_conn_peer fake_data = {};
	/* All MGCP shall be successful */
	if (!notify)
		return;
	osmo_fsm_inst_dispatch(notify, event_success, &fake_data);
}

/* measurement report */

uint8_t meas_rep_ba = 0, meas_rep_valid = 1, meas_valid = 1, meas_multi_rep = 0;
uint8_t meas_dl_rxlev = 0, meas_dl_rxqual = 0;
uint8_t meas_ul_rxlev = 0, meas_ul_rxqual = 0;
uint8_t meas_tx_power_ms = 0, meas_tx_power_bs = 0, meas_ta_ms = 0;
uint8_t meas_dtx_ms = 0, meas_dtx_bs = 0, meas_nr = 0;
uint8_t meas_num_nc = 0, meas_rxlev_nc[6], meas_bsic_nc[6], meas_bcch_f_nc[6];

static void gen_meas_rep(struct gsm_lchan *lchan)
{
	struct msgb *msg = msgb_alloc_headroom(256, 64, "RSL");
	struct abis_rsl_dchan_hdr *dh;
	uint8_t chan_nr = gsm_lchan2chan_nr(lchan);
	uint8_t ulm[3], l1i[2], *buf;
	struct gsm48_hdr *gh;
	struct gsm48_meas_res *mr;

	dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh));
	dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN;
	dh->c.msg_type = RSL_MT_MEAS_RES;
	dh->ie_chan = RSL_IE_CHAN_NR;
	dh->chan_nr = chan_nr;

	msgb_tv_put(msg, RSL_IE_MEAS_RES_NR, meas_nr++);

	ulm[0] = meas_ul_rxlev | (meas_dtx_bs << 7);
	ulm[1] = meas_ul_rxlev;
	ulm[2] = (meas_ul_rxqual << 3) | meas_ul_rxqual;
	msgb_tlv_put(msg, RSL_IE_UPLINK_MEAS, sizeof(ulm), ulm);

	msgb_tv_put(msg, RSL_IE_BS_POWER, meas_tx_power_bs);

	l1i[0] = 0;
	l1i[1] = meas_ta_ms;
	msgb_tv_fixed_put(msg, RSL_IE_L1_INFO, sizeof(l1i), l1i);

	buf = msgb_put(msg, 3);
	buf[0] = RSL_IE_L3_INFO;
	buf[1] = (sizeof(*gh) + sizeof(*mr)) >> 8;
	buf[2] = (sizeof(*gh) + sizeof(*mr)) & 0xff;

	gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh));
	mr = (struct gsm48_meas_res *) msgb_put(msg, sizeof(*mr));

	gh->proto_discr = GSM48_PDISC_RR;
	gh->msg_type = GSM48_MT_RR_MEAS_REP;

	/* measurement results */
	mr->rxlev_full = meas_dl_rxlev;
	mr->rxlev_sub = meas_dl_rxlev;
	mr->rxqual_full = meas_dl_rxqual;
	mr->rxqual_sub = meas_dl_rxqual;
	mr->dtx_used = meas_dtx_ms;
	mr->ba_used = meas_rep_ba;
	mr->meas_valid = !meas_valid; /* 0 = valid */
	if (meas_rep_valid) {
		mr->no_nc_n_hi = meas_num_nc >> 2;
		mr->no_nc_n_lo = meas_num_nc & 3;
	} else {
		/* no results for serving cells */
		mr->no_nc_n_hi = 1;
		mr->no_nc_n_lo = 3;
	}
	mr->rxlev_nc1 = meas_rxlev_nc[0];
	mr->rxlev_nc2_hi = meas_rxlev_nc[1] >> 1;
	mr->rxlev_nc2_lo = meas_rxlev_nc[1] & 1;
	mr->rxlev_nc3_hi = meas_rxlev_nc[2] >> 2;
	mr->rxlev_nc3_lo = meas_rxlev_nc[2] & 3;
	mr->rxlev_nc4_hi = meas_rxlev_nc[3] >> 3;
	mr->rxlev_nc4_lo = meas_rxlev_nc[3] & 7;
	mr->rxlev_nc5_hi = meas_rxlev_nc[4] >> 4;
	mr->rxlev_nc5_lo = meas_rxlev_nc[4] & 15;
	mr->rxlev_nc6_hi = meas_rxlev_nc[5] >> 5;
	mr->rxlev_nc6_lo = meas_rxlev_nc[5] & 31;
	mr->bsic_nc1_hi = meas_bsic_nc[0] >> 3;
	mr->bsic_nc1_lo = meas_bsic_nc[0] & 7;
	mr->bsic_nc2_hi = meas_bsic_nc[1] >> 4;
	mr->bsic_nc2_lo = meas_bsic_nc[1] & 15;
	mr->bsic_nc3_hi = meas_bsic_nc[2] >> 5;
	mr->bsic_nc3_lo = meas_bsic_nc[2] & 31;
	mr->bsic_nc4 = meas_bsic_nc[3];
	mr->bsic_nc5 = meas_bsic_nc[4];
	mr->bsic_nc6 = meas_bsic_nc[5];
	mr->bcch_f_nc1 = meas_bcch_f_nc[0];
	mr->bcch_f_nc2 = meas_bcch_f_nc[1];
	mr->bcch_f_nc3 = meas_bcch_f_nc[2];
	mr->bcch_f_nc4 = meas_bcch_f_nc[3];
	mr->bcch_f_nc5_hi = meas_bcch_f_nc[4] >> 1;
	mr->bcch_f_nc5_lo = meas_bcch_f_nc[4] & 1;
	mr->bcch_f_nc6_hi = meas_bcch_f_nc[5] >> 2;
	mr->bcch_f_nc6_lo = meas_bcch_f_nc[5] & 3;

	msg->dst = lchan->ts->trx->bts->c0->rsl_link;
	msg->l2h = (unsigned char *)dh;
	msg->l3h = (unsigned char *)gh;

	abis_rsl_rcvmsg(msg);
}

static struct gsm_bts *create_bts(int arfcn)
{
	struct gsm_bts *bts;
	struct e1inp_sign_link *rsl_link;
	int i;

	bts = bsc_bts_alloc_register(bsc_gsmnet, GSM_BTS_TYPE_OSMOBTS, 0x3f);
	if (!bts) {
		printf("No resource for bts1\n");
		return NULL;
	}

	bts->location_area_code = 23;
	bts->c0->arfcn = arfcn;

	bts->codec.efr = 1;
	bts->codec.hr = 1;
	bts->codec.amr = 1;

	rsl_link = talloc_zero(ctx, struct e1inp_sign_link);
	rsl_link->trx = bts->c0;
	bts->c0->rsl_link = rsl_link;

	bts->c0->mo.nm_state.operational = NM_OPSTATE_ENABLED;
	bts->c0->mo.nm_state.availability = NM_AVSTATE_OK;
	bts->c0->bb_transc.mo.nm_state.operational = NM_OPSTATE_ENABLED;
	bts->c0->bb_transc.mo.nm_state.availability = NM_AVSTATE_OK;

	/* 4 full rate and 4 half rate channels */
	for (i = 1; i <= 6; i++) {
		bts->c0->ts[i].pchan_from_config = (i < 5) ? GSM_PCHAN_TCH_F : GSM_PCHAN_TCH_H;
		bts->c0->ts[i].mo.nm_state.operational = NM_OPSTATE_ENABLED;
		bts->c0->ts[i].mo.nm_state.availability = NM_AVSTATE_OK;
	}

	for (i = 0; i < ARRAY_SIZE(bts->c0->ts); i++) {
		/* make sure ts->lchans[] get initialized */
		osmo_fsm_inst_dispatch(bts->c0->ts[i].fi, TS_EV_OML_READY, 0);
	}
	return bts;
}

void create_conn(struct gsm_lchan *lchan)
{
	static unsigned int next_imsi = 0;
	char imsi[sizeof(lchan->conn->bsub->imsi)];
	struct gsm_network *net = lchan->ts->trx->bts->network;
	struct gsm_subscriber_connection *conn;
	struct mgcp_client *fake_mgcp_client = (void*)talloc_zero(net, int);

	conn = bsc_subscr_con_allocate(net);

	conn->user_plane.mgw_endpoint = mgw_endpoint_alloc(conn->fi,
							   GSCON_EV_FORGET_MGW_ENDPOINT,
							   fake_mgcp_client, "test",
							   "fake endpoint");

	lchan->conn = conn;
	conn->lchan = lchan;

	/* Make up a new IMSI for this test, for logging the subscriber */
	next_imsi ++;
	snprintf(imsi, sizeof(imsi), "%06u", next_imsi);
	lchan->conn->bsub = bsc_subscr_find_or_create_by_imsi(net->bsc_subscribers, imsi);

	/* kick the FSM from INIT through to the ACTIVE state */
	osmo_fsm_inst_dispatch(conn->fi, GSCON_EV_A_CONN_REQ, NULL);
	osmo_fsm_inst_dispatch(conn->fi, GSCON_EV_A_CONN_CFM, NULL);
}

/* create lchan */
struct gsm_lchan *create_lchan(struct gsm_bts *bts, int full_rate, char *codec)
{
	struct gsm_lchan *lchan;

	lchan = lchan_select_by_type(bts, (full_rate) ? GSM_LCHAN_TCH_F : GSM_LCHAN_TCH_H);
	if (!lchan) {
		printf("No resource for lchan\n");
		exit(EXIT_FAILURE);
	}

	/* serious hack into osmo_fsm */
	lchan->fi->state = LCHAN_ST_ACTIVE;
	lchan->ts->fi->state = TS_ST_IN_USE;
	LOG_LCHAN(lchan, LOGL_DEBUG, "activated by handover_test.c");

	create_conn(lchan);
	if (!strcasecmp(codec, "FR") && full_rate)
		lchan->tch_mode = GSM48_CMODE_SPEECH_V1;
	else if (!strcasecmp(codec, "HR") && !full_rate)
		lchan->tch_mode = GSM48_CMODE_SPEECH_V1;
	else if (!strcasecmp(codec, "EFR") && full_rate)
		lchan->tch_mode = GSM48_CMODE_SPEECH_EFR;
	else if (!strcasecmp(codec, "AMR"))
		lchan->tch_mode = GSM48_CMODE_SPEECH_AMR;
	else {
		printf("Given codec unknown\n");
		exit(EXIT_FAILURE);
	}

	lchan->conn->codec_list = (struct gsm0808_speech_codec_list){
		.codec = {
			{ .fi=true, .type=GSM0808_SCT_FR1, },
			{ .fi=true, .type=GSM0808_SCT_FR2, },
			{ .fi=true, .type=GSM0808_SCT_FR3, },
			{ .fi=true, .type=GSM0808_SCT_HR1, },
			{ .fi=true, .type=GSM0808_SCT_HR3, },
		},
		.len = 5,
	};

	return lchan;
}

/* parse channel request */

static int got_chan_req = 0;
static struct gsm_lchan *chan_req_lchan = NULL;

static int parse_chan_act(struct gsm_lchan *lchan, uint8_t *data)
{
	chan_req_lchan = lchan;
	return 0;
}

static int parse_chan_rel(struct gsm_lchan *lchan, uint8_t *data)
{
	chan_req_lchan = lchan;
	return 0;
}

/* parse handover request */

static int got_ho_req = 0;
static struct gsm_lchan *ho_req_lchan = NULL;

static int parse_ho_command(struct gsm_lchan *lchan, uint8_t *data, int len)
{
	struct gsm48_hdr *gh = (struct gsm48_hdr *) data;
	struct gsm48_ho_cmd *ho = (struct gsm48_ho_cmd *) gh->data;
	int arfcn;
	struct gsm_bts *neigh;

	switch (gh->msg_type) {
	case GSM48_MT_RR_HANDO_CMD:
		arfcn = (ho->cell_desc.arfcn_hi << 8) | ho->cell_desc.arfcn_lo;

		/* look up trx. since every dummy bts uses different arfcn and
		 * only one trx, it is simple */
		llist_for_each_entry(neigh, &bsc_gsmnet->bts_list, list) {
			if (neigh->c0->arfcn != arfcn)
				continue;
			ho_req_lchan = lchan;
			return 0;
		}
		break;
	case GSM48_MT_RR_ASS_CMD:
		ho_req_lchan = lchan;
		return 0;
		break;
	default:
		fprintf(stderr, "Error, expecting HO or AS command\n");
		return -EINVAL;
	}

	return -1;
}

/* send channel activation ack */
static void send_chan_act_ack(struct gsm_lchan *lchan, int act)
{
	struct msgb *msg = msgb_alloc_headroom(256, 64, "RSL");
	struct abis_rsl_dchan_hdr *dh;

	dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh));
	dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN;
	dh->c.msg_type = (act) ? RSL_MT_CHAN_ACTIV_ACK : RSL_MT_RF_CHAN_REL_ACK;
	dh->ie_chan = RSL_IE_CHAN_NR;
	dh->chan_nr = gsm_lchan2chan_nr(lchan);

	msg->dst = lchan->ts->trx->bts->c0->rsl_link;
	msg->l2h = (unsigned char *)dh;

	abis_rsl_rcvmsg(msg);
}

/* send handover complete */
static void send_ho_complete(struct gsm_lchan *lchan, bool success)
{
	struct msgb *msg = msgb_alloc_headroom(256, 64, "RSL");
	struct abis_rsl_rll_hdr *rh;
	uint8_t chan_nr = gsm_lchan2chan_nr(lchan);
	uint8_t *buf;
	struct gsm48_hdr *gh;
	struct gsm48_ho_cpl *hc;

	rh = (struct abis_rsl_rll_hdr *) msgb_put(msg, sizeof(*rh));
	rh->c.msg_discr = ABIS_RSL_MDISC_RLL;
	rh->c.msg_type = RSL_MT_DATA_IND;
	rh->ie_chan = RSL_IE_CHAN_NR;
	rh->chan_nr = chan_nr;
	rh->ie_link_id = RSL_IE_LINK_IDENT;
	rh->link_id = 0x00;

	buf = msgb_put(msg, 3);
	buf[0] = RSL_IE_L3_INFO;
	buf[1] = (sizeof(*gh) + sizeof(*hc)) >> 8;
	buf[2] = (sizeof(*gh) + sizeof(*hc)) & 0xff;

	gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh));
	hc = (struct gsm48_ho_cpl *) msgb_put(msg, sizeof(*hc));

	gh->proto_discr = GSM48_PDISC_RR;
	gh->msg_type =
		success ? GSM48_MT_RR_HANDO_COMPL : GSM48_MT_RR_HANDO_FAIL;

	msg->dst = lchan->ts->trx->bts->c0->rsl_link;
	msg->l2h = (unsigned char *)rh;
	msg->l3h = (unsigned char *)gh;

	abis_rsl_rcvmsg(msg);
}

/* override, requires '-Wl,--wrap=abis_rsl_sendmsg'.
 * Catch RSL messages sent towards the BTS. */
int __real_abis_rsl_sendmsg(struct msgb *msg);
int __wrap_abis_rsl_sendmsg(struct msgb *msg)
{
	struct abis_rsl_dchan_hdr *dh = (struct abis_rsl_dchan_hdr *) msg->data;
	struct e1inp_sign_link *sign_link = msg->dst;
	int rc;
	struct gsm_lchan *lchan = rsl_lchan_lookup(sign_link->trx, dh->chan_nr, &rc);

	if (rc) {
		printf("rsl_lchan_lookup() failed\n");
		exit(1);
	}

	switch (dh->c.msg_type) {
	case RSL_MT_CHAN_ACTIV:
		rc = parse_chan_act(lchan, dh->data);
		if (rc == 0)
			got_chan_req = 1;
		break;
	case RSL_MT_RF_CHAN_REL:
		rc = parse_chan_rel(lchan, dh->data);
		if (rc == 0)
			send_chan_act_ack(chan_req_lchan, 0);
		break;
	case RSL_MT_DATA_REQ:
		rc = parse_ho_command(lchan, msg->l3h, msgb_l3len(msg));
		if (rc == 0)
			got_ho_req = 1;
		break;
	case RSL_MT_IPAC_CRCX:
		break;
	default:
		printf("unknown rsl message=0x%x\n", dh->c.msg_type);
	}
	return 0;
}

/* test cases */

static char *test_case_0[] = {
	"2",

	"Stay in better cell\n\n"
	"There are many neighbor cells, but only the current cell is the best\n"
	"cell, so no handover is performed\n",

	"create-bts", "7",
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "0", "30","0",
		"6","0","20","1","21","2","18","3","20","4","23","5","19",
	"expect-no-chan",
	NULL
};

static char *test_case_1[] = {
	"2",

	"Handover to best better cell\n\n"
	"The best neighbor cell is selected\n",

	"create-bts", "7",
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "0", "10","0",
		"6","0","20","1","21","2","18","3","20","4","23","5","19",
	"expect-chan", "5", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_2[] = {
	"2",

	"Handover and Assignment must be enabled\n\n"
	"This test will start with disabled assignment and handover.  A\n"
	"better neighbor cell (assignment enabled) will not be selected and \n"
	"also no assignment from TCH/H to TCH/F to improve quality. There\n"
	"will be no handover nor assignment. After enabling assignment on the\n"
	"current cell, the MS will assign to TCH/F. After enabling handover\n"
	"in the current cell, but disabling in the neighbor cell, handover\n"
	"will not be performed, until it is enabled in the neighbor cell too.\n",

	"create-bts", "2",
	"afs-rxlev-improve", "0", "5",
	"create-ms", "0", "TCH/H", "AMR",
	"as-enable", "0", "0",
	"ho-enable", "0", "0",
	"meas-rep", "0", "0","0", "1","0","30",
	"expect-no-chan",
	"as-enable", "0", "1",
	"meas-rep", "0", "0","0", "1","0","30",
	"expect-chan", "0", "1",
	"ack-chan",
	"expect-ho", "0", "5",
	"ho-complete",
	"ho-enable", "0", "1",
	"ho-enable", "1", "0",
	"meas-rep", "0", "0","0", "1","0","30",
	"expect-no-chan",
	"ho-enable", "1", "1",
	"meas-rep", "0", "0","0", "1","0","30",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_3[] = {
	"2",

	"Penalty timer must not run\n\n"
	"The MS will try to handover to a better cell, but this will fail.\n"
	"Even though the cell is still better, handover will not be performed\n"
	"due to penalty timer after handover failure\n",

	"create-bts", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-failed",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-no-chan",
	NULL
};

static char *test_case_4[] = {
	"2",

	"TCH/H keeping with HR codec\n\n"
	"The MS is using half rate V1 codec, but the better cell is congested\n"
	"at TCH/H slots. As the congestion is removed, the handover takes\n"
	"place.\n",

	"create-bts", "2",
	"set-min-free", "1", "TCH/H", "4",
	"create-ms", "0", "TCH/H", "HR",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-no-chan",
	"set-min-free", "1", "TCH/H", "3",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-chan", "1", "5",
	"ack-chan",
	"expect-ho", "0", "5",
	"ho-complete",
	NULL
};

static char *test_case_5[] = {
	"2",

	"TCH/F keeping with FR codec\n\n"
	"The MS is using full rate V1 codec, but the better cell is congested\n"
	"at TCH/F slots. As the congestion is removed, the handover takes\n"
	"place.\n",

	"create-bts", "2",
	"set-min-free", "1", "TCH/F", "4",
	"create-ms", "0", "TCH/F", "FR",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-no-chan",
	"set-min-free", "1", "TCH/F", "3",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_6[] = {
	"2",

	"TCH/F keeping with EFR codec\n\n"
	"The MS is using full rate V2 codec, but the better cell is congested\n"
	"at TCH/F slots. As the congestion is removed, the handover takes\n"
	"place.\n",

	"create-bts", "2",
	"set-min-free", "1", "TCH/F", "4",
	"create-ms", "0", "TCH/F", "EFR",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-no-chan",
	"set-min-free", "1", "TCH/F", "3",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_7[] = {
	"2",

	"TCH/F to TCH/H changing with AMR codec\n\n"
	"The MS is using AMR V3 codec, the better cell is congested at TCH/F\n"
	"slots. The handover is performed to non-congested TCH/H slots.\n",

	"create-bts", "2",
	"set-min-free", "1", "TCH/F", "4",
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-chan", "1", "5",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_8[] = {
	"2",

	"No handover to a cell with no slots available\n\n"
	"If no slot is available, no handover is performed\n",

	"create-bts", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"create-ms", "1", "TCH/F", "AMR",
	"create-ms", "1", "TCH/F", "AMR",
	"create-ms", "1", "TCH/F", "AMR",
	"create-ms", "1", "TCH/F", "AMR",
	"create-ms", "1", "TCH/H", "AMR",
	"create-ms", "1", "TCH/H", "AMR",
	"create-ms", "1", "TCH/H", "AMR",
	"create-ms", "1", "TCH/H", "AMR",
	"meas-rep", "0", "0","0", "1","0","30",
	"expect-no-chan",
	NULL
};

static char *test_case_9[] = {
	"2",

	"No more parallel handovers, if max_unsync_ho is defined\n\n"
	"There are tree mobiles that want to handover, but only two can do\n"
	"it at a time, because the maximum number is limited to two.\n",

	"create-bts", "2",
	"set-max-ho", "1", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"create-ms", "0", "TCH/F", "AMR",
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "0", "0","0", "1","0","30",
	"expect-chan", "1", "1",
	"meas-rep", "1", "0","0", "1","0","30",
	"expect-chan", "1", "2",
	"meas-rep", "2", "0","0", "1","0","30",
	"expect-no-chan",
	NULL
};

static char *test_case_10[] = {
	"2",

	"Hysteresis\n\n"
	"If neighbor cell is better, handover is only performed if the\n"
	"ammount of improvement is greater or equal hyteresis\n",

	"create-bts", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "0", "27","0", "1","0","30",
	"expect-no-chan",
	"meas-rep", "0", "26","0", "1","0","30",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_11[] = {
	"2",

	"No Hysteresis and minimum RX level\n\n"
	"If current cell's RX level is below mimium level, handover must be\n"
	"performed, no matter of the hysteresis. First do not perform\n"
	"handover to better neighbor cell, because the hysteresis is not\n"
	"met. Second do not perform handover because better neighbor cell is\n"
	"below minimum RX level. Third perform handover because current cell\n"
	"is below minimum RX level, even if the better neighbor cell (minimum\n"
	"RX level reached) does not meet the hysteresis.\n",

	"create-bts", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "0", "10","0", "1","0","11",
	"expect-no-chan",
	"meas-rep", "0", "8","0", "1","0","9",
	"expect-no-chan",
	"meas-rep", "0", "9","0", "1","0","10",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_12[] = {
	"2",

	"No handover to congested cell\n\n"
	"The better neighbor cell is congested, so no handover is performed.\n"
	"After the congestion is over, handover will be performed.\n",

	"create-bts", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"set-min-free", "1", "TCH/F", "4",
	"set-min-free", "1", "TCH/H", "4",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-no-chan",
	"set-min-free", "1", "TCH/F", "3",
	"set-min-free", "1", "TCH/H", "3",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_13[] = {
	"2",

	"Handover to balance congestion\n\n"
	"The current and the better cell are congested, so no handover is\n"
	"performed. This is because handover would congest the neighbor cell\n"
	"more. After congestion raises in the current cell, the handover is\n"
	"performed to balance congestion\n",

	"create-bts", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"set-min-free", "0", "TCH/F", "4",
	"set-min-free", "0", "TCH/H", "4",
	"set-min-free", "1", "TCH/F", "4",
	"set-min-free", "1", "TCH/H", "4",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-no-chan",
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_14[] = {
	"2",

	"Handover to congested cell, if RX level is below minimum\n\n"
	"The better neighbor cell is congested, so no handover is performed.\n"
	"If the RX level of the current cell drops below minimum acceptable\n"
	"level, the handover is performed.\n",

	"create-bts", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"set-min-free", "1", "TCH/F", "4",
	"set-min-free", "1", "TCH/H", "4",
	"meas-rep", "0", "10","0", "1","0","30",
	"expect-no-chan",
	"meas-rep", "0", "9","0", "1","0","30",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_15[] = {
	"2",

	"Handover to cell with worse RXLEV, if RXQUAL is below minimum\n\n"
	"The neighbor cell has worse RXLEV, so no handover is performed.\n"
	"If the RXQUAL of the current cell drops below minimum acceptable\n"
	"level, the handover is performed. It is also required that 10\n"
	"reports are received, before RXQUAL is checked.\n",
	/* (See also test 28, which tests for RXQUAL triggering HO to congested cell.) */
	/* TODO: bad RXQUAL may want to prefer assignment within the same cell to avoid interference.
	 * See Performence Enhancements in a Frequency Hopping GSM Network (Nielsen Wigard 2002), Chapter
	 * 2.1.1, "Interference" in the list of triggers on p.157. */

	"create-bts", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "0", "40","6", "1","0","30",
	"expect-no-chan",
	"meas-rep", "0", "40","6", "1","0","30",
	"expect-no-chan",
	"meas-rep", "0", "40","6", "1","0","30",
	"expect-no-chan",
	"meas-rep", "0", "40","6", "1","0","30",
	"expect-no-chan",
	"meas-rep", "0", "40","6", "1","0","30",
	"expect-no-chan",
	"meas-rep", "0", "40","6", "1","0","30",
	"expect-no-chan",
	"meas-rep", "0", "40","6", "1","0","30",
	"expect-no-chan",
	"meas-rep", "0", "40","6", "1","0","30",
	"expect-no-chan",
	"meas-rep", "0", "40","6", "1","0","30",
	"expect-no-chan",
	"meas-rep", "0", "40","6", "1","0","30",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_16[] = {
	"2",

	"Handover due to maximum TA exceeded\n\n"
	"The MS in the current (best) cell has reached maximum allowed timing\n"
	"advance. No handover is performed until the timing advance exceeds\n"
	"it. The originating cell is still the best, but no handover is\n"
	"performed back to that cell, because the penalty timer (due to\n"
	"maximum allowed timing advance) is running.\n",

	"create-bts", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"set-max-ta", "0", "5", /* of cell */
	"set-ta", "0", "5", /* of ms */
	"meas-rep", "0", "30","0", "1","0","20",
	"expect-no-chan",
	"set-ta", "0", "6", /* of ms */
	"meas-rep", "0", "30","0", "1","0","20",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	"meas-rep", "0", "20","0", "1","0","30",
	"expect-no-chan",
	NULL
};

static char *test_case_17[] = {
	"2",

	"Congestion check: No congestion\n\n"
	"Three cells have different number of used slots, but there is no\n"
	"congestion in any of these cells. No handover is performed.\n",

	"create-bts", "3",
	"set-min-free", "0", "TCH/F", "2",
	"set-min-free", "0", "TCH/H", "2",
	"set-min-free", "1", "TCH/F", "2",
	"set-min-free", "1", "TCH/H", "2",
	"set-min-free", "2", "TCH/F", "2",
	"set-min-free", "2", "TCH/H", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"create-ms", "0", "TCH/F", "AMR",
	"create-ms", "0", "TCH/H", "AMR",
	"create-ms", "0", "TCH/H", "AMR",
	"create-ms", "1", "TCH/F", "AMR",
	"create-ms", "1", "TCH/H", "AMR",
	"meas-rep", "0", "30","0", "2","0","20","1","20",
	"expect-no-chan",
	"meas-rep", "1", "30","0", "2","0","20","1","20",
	"expect-no-chan",
	"meas-rep", "2", "30","0", "2","0","20","1","20",
	"expect-no-chan",
	"meas-rep", "3", "30","0", "2","0","20","1","20",
	"expect-no-chan",
	"meas-rep", "4", "30","0", "2","0","20","1","20",
	"expect-no-chan",
	"meas-rep", "5", "30","0", "2","0","20","1","20",
	"expect-no-chan",
	"congestion-check",
	"expect-no-chan",
	NULL
};

static char *test_case_18[] = {
	"2",

	"Congestion check: One out of three cells is congested\n\n"
	"Three cells have different number of used slots, but there is\n"
	"congestion at TCH/F in the first cell. Handover is performed with\n"
	"the best candidate.\n",

	"create-bts", "3",
	"set-min-free", "0", "TCH/F", "2",
	"set-min-free", "0", "TCH/H", "2",
	"set-min-free", "1", "TCH/F", "2",
	"set-min-free", "1", "TCH/H", "2",
	"set-min-free", "2", "TCH/F", "2",
	"set-min-free", "2", "TCH/H", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"create-ms", "0", "TCH/F", "AMR",
	"create-ms", "0", "TCH/F", "AMR",
	"create-ms", "0", "TCH/H", "AMR",
	"create-ms", "0", "TCH/H", "AMR",
	"create-ms", "1", "TCH/F", "AMR",
	"create-ms", "1", "TCH/H", "AMR",
	"meas-rep", "0", "30","0", "2","0","20","1","20",
	"expect-no-chan",
	"meas-rep", "1", "30","0", "2","0","20","1","20",
	"expect-no-chan",
	"meas-rep", "2", "30","0", "2","0","21","1","20",
	"expect-no-chan",
	"meas-rep", "3", "30","0", "2","0","20","1","20",
	"expect-no-chan",
	"meas-rep", "4", "30","0", "2","0","20","1","20",
	"expect-no-chan",
	"meas-rep", "5", "30","0", "2","0","20","1","20",
	"expect-no-chan",
	"meas-rep", "6", "30","0", "2","0","20","1","20",
	"expect-no-chan",
	"congestion-check",
	"expect-chan", "1", "2",
	"ack-chan",
	"expect-ho", "0", "3", /* best candidate is MS 2 at BTS 1, TS 3 */
	"ho-complete",
	NULL
};

static char *test_case_19[] = {
	"2",

	"Congestion check: Balancing over congested cells\n\n"
	"Two cells are congested, but the second cell is more congested.\n"
	"Handover is performed to solve the congestion.\n",

	"create-bts", "2",
	"set-min-free", "0", "TCH/F", "4",
	"set-min-free", "1", "TCH/F", "4",
	"create-ms", "0", "TCH/F", "FR",
	"create-ms", "0", "TCH/F", "FR",
	"create-ms", "0", "TCH/F", "FR",
	"create-ms", "1", "TCH/F", "FR",
	"meas-rep", "0", "30","0", "1","0","20",
	"expect-no-chan",
	"meas-rep", "1", "30","0", "1","0","21",
	"expect-no-chan",
	"meas-rep", "2", "30","0", "1","0","20",
	"expect-no-chan",
	"meas-rep", "3", "30","0", "1","0","20",
	"expect-no-chan",
	"congestion-check",
	"expect-chan", "1", "2",
	"ack-chan",
	"expect-ho", "0", "2", /* best candidate is MS 1 at BTS 0, TS 2 */
	"ho-complete",
	NULL
};

static char *test_case_20[] = {
	"2",

	"Congestion check: Solving congestion by handover TCH/F -> TCH/H\n\n"
	"Two BTS, one MS in the first congested BTS must handover to\n"
	"non-congested TCH/H of second BTS, in order to solve congestion\n",
	"create-bts", "2",
	"set-min-free", "0", "TCH/F", "4",
	"set-min-free", "0", "TCH/H", "4",
	"set-min-free", "1", "TCH/F", "4",
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "0", "30","0", "1","0","30",
	"expect-no-chan",
	"congestion-check",
	"expect-chan", "1", "5",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_21[] = {
	"2",

	"Congestion check: Balancing congestion by handover TCH/F -> TCH/H\n\n"
	"Two BTS, one MS in the first congested BTS must handover to\n"
	"less-congested TCH/H of second BTS, in order to balance congestion\n",
	"create-bts", "2",
	"set-min-free", "0", "TCH/F", "4",
	"set-min-free", "0", "TCH/H", "4",
	"set-min-free", "1", "TCH/F", "4",
	"set-min-free", "1", "TCH/H", "4",
	"create-ms", "0", "TCH/F", "AMR",
	"create-ms", "0", "TCH/F", "AMR",
	"create-ms", "0", "TCH/H", "AMR",
	"meas-rep", "0", "30","0", "1","0","30",
	"expect-no-chan",
	"congestion-check",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_22[] = {
	"2",

	"Congestion check: Upgrading worst candidate from TCH/H -> TCH/F\n\n"
	"There is only one BTS. The TCH/H slots are congested. Since\n"
	"assignment is performed to less-congested TCH/F, the candidate with\n"
	"the worst RX level is chosen.\n",

	"create-bts", "1",
	"set-min-free", "0", "TCH/F", "4",
	"set-min-free", "0", "TCH/H", "4",
	"create-ms", "0", "TCH/H", "AMR",
	"create-ms", "0", "TCH/H", "AMR",
	"create-ms", "0", "TCH/H", "AMR",
	"meas-rep", "0", "30","0", "0",
	"meas-rep", "1", "34","0", "0",
	"meas-rep", "2", "20","0", "0",
	"expect-no-chan",
	"congestion-check",
	"expect-chan", "0", "1",
	"ack-chan",
	"expect-ho", "0", "6",
	"ho-complete",
	NULL
};

static char *test_case_23[] = {
	"2",

	"Story: 'A neighbor is your friend'\n",

	"create-bts", "3",

	"print",
	"Andreas is driving along the coast, on a sunny june afternoon.\n"
	"Suddenly he is getting a call from his friend and neighbor Axel.\n"
	"\n"
	"What happens: Two MS are created, #0 for Axel, #1 for Andreas.",
	/* Axel */
	"create-ms", "2", "TCH/F", "AMR",
	/* andreas */
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "1", "40","0", "1","0","30",
	"expect-no-chan",

	"print",
	"Axel asks Andreas if he would like to join them for a barbecue.\n"
	"Axel's house is right in the neighborhood and the weather is fine.\n"
	"Andreas agrees, so he drives to a close store to buy some barbecue\n"
	"skewers.\n"
	"\n"
	"What happens: While driving, a different cell (mounted atop the\n"
	"store) becomes better.",
	/* drive to bts 1 */
	"meas-rep", "1", "20","0", "1","0","35",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",

	"print",
	"While Andreas is walking into the store, Axel asks, if he could also\n"
	"bring some beer. Andreas has problems understanding him: \"I have a\n"
	"bad reception here. The cell tower is right atop the store, but poor\n"
	"coverage inside. Can you repeat please?\"\n"
	"\n"
	"What happens: Inside the store the close cell is so bad, that\n"
	"handover back to the previous cell is required.",
	/* bts 1 becomes bad, so bts 0 helps out */
	"meas-rep", "1", "5","0", "1","0","20",
	"expect-chan", "0", "1",
	"ack-chan",
	"expect-ho", "1", "1",
	"ho-complete",

	"print",
	"After Andreas bought skewers and beer, he leaves the store.\n"
	"\n"
	"What happens: Outside the store the close cell is better again, so\n"
	"handover back to the that cell is performed.",
	/* bts 1 becomes better again */
	"meas-rep", "1", "20","0", "1","0","35",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",

	"print",
	/* bts 2 becomes better */
	"Andreas drives down to the lake where Axel's house is.\n"
	"\n"
	"What happens: There is a small cell at Axel's house, which becomes\n"
	"better, because the current cell has no good comverage at the lake.",
	"meas-rep", "1", "14","0", "2","0","2","1","63",
	"expect-chan", "2", "2",
	"ack-chan",
	"expect-ho", "1", "1",
	"ho-complete",

	"print",
	"Andreas wonders why he still has good radio coverage: \"Last time it\n"
	"was so bad\". Axel says: \"I installed a pico cell in my house,\n"
	"now we can use our mobile phones down here at the lake.\"",

	NULL
};

static char *test_case_24[] = {
	"2",
	"No (or not enough) measurements for handover\n\n"
	"Do not solve congestion in cell, because there is no measurement.\n"
	"As soon as enough measurments available (1 in our case), perform\n"
	"handover. Afterwards the old cell becomes congested and the new\n"
	"cell is not. Do not perform handover until new measurements are\n"
	"received.\n",

	/* two cells, first in congested, but no handover */
	"create-bts", "2",
	"set-min-free", "0", "TCH/F", "4",
	"set-min-free", "0", "TCH/H", "4",
	"create-ms", "0", "TCH/F", "AMR",
	"congestion-check",
	"expect-no-chan",

	/* send measurement and trigger congestion check */
	"meas-rep", "0", "20","0", "1","0","20",
	"expect-no-chan",
	"congestion-check",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",

	/* congest the first cell and remove congestion from second cell */
	"set-min-free", "0", "TCH/F", "0",
	"set-min-free", "0", "TCH/H", "0",
	"set-min-free", "1", "TCH/F", "4",
	"set-min-free", "1", "TCH/H", "4",

	/* no handover until measurements applied */
	"congestion-check",
	"expect-no-chan",
	"meas-rep", "0", "20","0", "1","0","20",
	"expect-no-chan",
	"congestion-check",
	"expect-chan", "0", "1",
	"ack-chan",
	"expect-ho", "1", "1",
	"ho-complete",
	NULL
};

static char *test_case_25[] = {
	"1",

	"Stay in better cell\n\n"
	"There are many neighbor cells, but only the current cell is the best\n"
	"cell, so no handover is performed\n",

	"create-bts", "7",
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "0", "30","0",
		"6","0","20","1","21","2","18","3","20","4","23","5","19",
	"expect-no-chan",
	NULL
};

static char *test_case_26[] = {
	"1",

	"Handover to best better cell\n\n"
	"The best neighbor cell is selected\n",

	"create-bts", "7",
	"create-ms", "0", "TCH/F", "AMR",
	"meas-rep", "0", "10","0",
		"6","0","20","1","21","2","18","3","20","4","23","5","19",
	"expect-chan", "5", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char *test_case_27[] = {
	"2",

	"Congestion check: Upgrading worst candidate from TCH/H -> TCH/F\n\n"
	"There is only one BTS. The TCH/H slots are congested. Since\n"
	"assignment is performed to less-congested TCH/F, the candidate with\n"
	"the worst RX level is chosen. (So far like test 22.)\n"
	"After that, trigger more congestion checks to ensure stability.\n",

	"create-bts", "1",
	"set-min-free", "0", "TCH/F", "2",
	"set-min-free", "0", "TCH/H", "4",
	"create-ms", "0", "TCH/H", "AMR",
	"create-ms", "0", "TCH/H", "AMR",
	"create-ms", "0", "TCH/H", "AMR",
	"meas-rep", "0", "30","0", "0",
	"meas-rep", "1", "34","0", "0",
	"meas-rep", "2", "20","0", "0",
	"expect-no-chan",
	"congestion-check",
	"expect-chan", "0", "1",
	"ack-chan",
	"expect-ho", "0", "6",
	"ho-complete",
	"congestion-check",
	"expect-chan", "0", "2",
	"ack-chan",
	"expect-ho", "0", "5",
	"ho-complete",
	"congestion-check",
	"expect-no-chan",
	"congestion-check",
	"expect-no-chan",
	NULL
};

static char *test_case_28[] = {
	"2",

	"Handover to congested cell, if RX quality is below minimum\n\n"
	"The better neighbor cell is congested, so no handover is performed.\n"
	"If the RX quality of the current cell drops below minimum acceptable\n"
	"level, the handover is performed. It is also required that 10\n"
	"resports are received, before RX quality is checked.\n",

	"create-bts", "2",
	"create-ms", "0", "TCH/F", "AMR",
	"set-min-free", "1", "TCH/F", "4",
	"set-min-free", "1", "TCH/H", "4",
	"meas-rep", "0", "30","6", "1","0","40",
	"expect-no-chan",
	"meas-rep", "0", "30","6", "1","0","40",
	"expect-no-chan",
	"meas-rep", "0", "30","6", "1","0","40",
	"expect-no-chan",
	"meas-rep", "0", "30","6", "1","0","40",
	"expect-no-chan",
	"meas-rep", "0", "30","6", "1","0","40",
	"expect-no-chan",
	"meas-rep", "0", "30","6", "1","0","40",
	"expect-no-chan",
	"meas-rep", "0", "30","6", "1","0","40",
	"expect-no-chan",
	"meas-rep", "0", "30","6", "1","0","40",
	"expect-no-chan",
	"meas-rep", "0", "30","6", "1","0","40",
	"expect-no-chan",
	"meas-rep", "0", "30","6", "1","0","40",
	"expect-chan", "1", "1",
	"ack-chan",
	"expect-ho", "0", "1",
	"ho-complete",
	NULL
};

static char **test_cases[] =  {
	test_case_0,
	test_case_1,
	test_case_2,
	test_case_3,
	test_case_4,
	test_case_5,
	test_case_6,
	test_case_7,
	test_case_8,
	test_case_9,
	test_case_10,
	test_case_11,
	test_case_12,
	test_case_13,
	test_case_14,
	test_case_15,
	test_case_16,
	test_case_17,
	test_case_18,
	test_case_19,
	test_case_20,
	test_case_21,
	test_case_22,
	test_case_23,
	test_case_24,
	test_case_25,
	test_case_26,
	test_case_27,
	test_case_28,
};

static const struct log_info_cat log_categories[] = {
	[DHO] = {
		.name = "DHO",
		.description = "Hand-Over Process",
		.color = "\033[1;38m",
		.enabled = 1, .loglevel = LOGL_DEBUG,
	},
	[DHODEC] = {
		.name = "DHODEC",
		.description = "Hand-Over Decision",
		.color = "\033[1;38m",
		.enabled = 1, .loglevel = LOGL_DEBUG,
	},
	[DMEAS] = {
		.name = "DMEAS",
		.description = "Radio Measurement Processing",
		.enabled = 1, .loglevel = LOGL_DEBUG,
	},
	[DREF] = {
		.name = "DREF",
		.description = "Reference Counting",
		.enabled = 1, .loglevel = LOGL_DEBUG,
	},
	[DRSL] = {
		.name = "DRSL",
		.description = "A-bis Radio Signalling Link (RSL)",
		.color = "\033[1;35m",
		.enabled = 1, .loglevel = LOGL_DEBUG,
	},
	[DRR] = {
		.name = "DRR",
		.description = "RR",
		.color = "\033[1;35m",
		.enabled = 1, .loglevel = LOGL_DEBUG,
	},
	[DRLL] = {
		.name = "DRLL",
		.description = "RLL",
		.color = "\033[1;35m",
		.enabled = 1, .loglevel = LOGL_DEBUG,
	},
	[DMSC] = {
		.name = "DMSC",
		.description = "Mobile Switching Center",
		.enabled = 1, .loglevel = LOGL_DEBUG,
	},
};

const struct log_info log_info = {
	.cat = log_categories,
	.num_cat = ARRAY_SIZE(log_categories),
};

int main(int argc, char **argv)
{
	char **test_case;
	struct gsm_bts *bts[256];
	int bts_num = 0;
	struct gsm_lchan *lchan[256];
	int lchan_num = 0;
	int i;
	int algorithm;
	int test_case_i;
	int last_test_i;

	ctx = talloc_named_const(NULL, 0, "handover_test");
	msgb_talloc_ctx_init(ctx, 0);

	test_case_i = argc > 1? atoi(argv[1]) : -1;
	last_test_i = ARRAY_SIZE(test_cases) - 1;

	if (test_case_i < 0 || test_case_i > last_test_i) {
		for (i = 0; i <= last_test_i; i++) {
			printf("Test #%d (algorithm %s):\n%s\n", i,
				test_cases[i][0], test_cases[i][1]);
		}
		printf("\nPlease specify test case number 0..%d\n", last_test_i);
		return EXIT_FAILURE;
	}

	osmo_init_logging2(ctx, &log_info);

	log_set_print_category(osmo_stderr_target, 1);
	log_set_print_category_hex(osmo_stderr_target, 0);
	log_set_print_filename2(osmo_stderr_target, LOG_FILENAME_BASENAME);
	osmo_fsm_log_addr(false);

	bsc_network_alloc();
	if (!bsc_gsmnet)
		exit(1);

	mgw_endpoint_fsm_init(bsc_gsmnet->T_defs);

	ho_set_algorithm(bsc_gsmnet->ho, 2);
	ho_set_ho_active(bsc_gsmnet->ho, true);
	ho_set_hodec2_as_active(bsc_gsmnet->ho, true);
	ho_set_hodec2_min_rxlev(bsc_gsmnet->ho, -100);
	ho_set_hodec2_rxlev_avg_win(bsc_gsmnet->ho, 1);
	ho_set_hodec2_rxlev_neigh_avg_win(bsc_gsmnet->ho, 1);
	ho_set_hodec2_rxqual_avg_win(bsc_gsmnet->ho, 10);
	ho_set_hodec2_pwr_hysteresis(bsc_gsmnet->ho, 3);
	ho_set_hodec2_pwr_interval(bsc_gsmnet->ho, 1);
	ho_set_hodec2_afs_bias_rxlev(bsc_gsmnet->ho, 0);
	ho_set_hodec2_min_rxqual(bsc_gsmnet->ho, 5);
	ho_set_hodec2_afs_bias_rxqual(bsc_gsmnet->ho, 0);
	ho_set_hodec2_max_distance(bsc_gsmnet->ho, 9999);
	ho_set_hodec2_ho_max(bsc_gsmnet->ho, 9999);
	ho_set_hodec2_penalty_max_dist(bsc_gsmnet->ho, 300);
	ho_set_hodec2_penalty_failed_ho(bsc_gsmnet->ho, 60);
	ho_set_hodec2_penalty_failed_as(bsc_gsmnet->ho, 60);

	bts_model_sysmobts_init();

	test_case = test_cases[test_case_i];

	fprintf(stderr, "--------------------\n");
	fprintf(stderr, "Performing the following test %d (algorithm %s):\n%s",
		test_case_i, test_case[0], test_case[1]);
	algorithm = atoi(test_case[0]);
	test_case += 2;
	fprintf(stderr, "--------------------\n");

	/* Disable the congestion check timer, we will trigger manually. */
	bsc_gsmnet->hodec2.congestion_check_interval_s = 0;

	handover_decision_1_init();
	hodec2_init(bsc_gsmnet);

	while (*test_case) {
		if (!strcmp(*test_case, "create-bts")) {
			static int arfcn = 870;
			int n = atoi(test_case[1]);
			fprintf(stderr, "- Creating %d BTS (one TRX each, "
				"TS(1-4) are TCH/F, TS(5-6) are TCH/H)\n", n);
			for (i = 0; i < n; i++)
				bts[bts_num + i] = create_bts(arfcn++);
			for (i = 0; i < n; i++) {
				if (gsm_generate_si(bts[bts_num + i], SYSINFO_TYPE_2) <= 0)
					fprintf(stderr, "Error generating SI2\n");
			}
			bts_num += n;
			test_case += 2;
		} else
		if (!strcmp(*test_case, "as-enable")) {
			fprintf(stderr, "- Set assignment enable state at "
				"BTS %s to %s\n", test_case[1], test_case[2]);
			ho_set_hodec2_as_active(bts[atoi(test_case[1])]->ho, atoi(test_case[2]));
			test_case += 3;
		} else
		if (!strcmp(*test_case, "ho-enable")) {
			fprintf(stderr, "- Set handover enable state at "
				"BTS %s to %s\n", test_case[1], test_case[2]);
			ho_set_ho_active(bts[atoi(test_case[1])]->ho, atoi(test_case[2]));
			test_case += 3;
		} else
		if (!strcmp(*test_case, "afs-rxlev-improve")) {
			fprintf(stderr, "- Set afs RX level improvement at "
				"BTS %s to %s\n", test_case[1], test_case[2]);
			ho_set_hodec2_afs_bias_rxlev(bts[atoi(test_case[1])]->ho, atoi(test_case[2]));
			test_case += 3;
		} else
		if (!strcmp(*test_case, "afs-rxqual-improve")) {
			fprintf(stderr, "- Set afs RX quality improvement at "
				"BTS %s to %s\n", test_case[1], test_case[2]);
			ho_set_hodec2_afs_bias_rxqual(bts[atoi(test_case[1])]->ho, atoi(test_case[2]));
			test_case += 3;
		} else
		if (!strcmp(*test_case, "set-min-free")) {
			fprintf(stderr, "- Setting minimum required free %s "
				"slots at BTS %s to %s\n", test_case[2],
				test_case[1], test_case[3]);
			if (!strcmp(test_case[2], "TCH/F"))
				ho_set_hodec2_tchf_min_slots(bts[atoi(test_case[1])]->ho, atoi(test_case[3]));
			else
				ho_set_hodec2_tchh_min_slots(bts[atoi(test_case[1])]->ho, atoi(test_case[3]));
			test_case += 4;
		} else
		if (!strcmp(*test_case, "set-max-ho")) {
			fprintf(stderr, "- Setting maximum parallel handovers "
				"at BTS %s to %s\n", test_case[1],
				test_case[2]);
			ho_set_hodec2_ho_max( bts[atoi(test_case[1])]->ho, atoi(test_case[2]));
			test_case += 3;
		} else
		if (!strcmp(*test_case, "set-max-ta")) {
			fprintf(stderr, "- Setting maximum timing advance "
				"at BTS %s to %s\n", test_case[1],
				test_case[2]);
			ho_set_hodec2_max_distance(bts[atoi(test_case[1])]->ho, atoi(test_case[2]));
			test_case += 3;
		} else
		if (!strcmp(*test_case, "create-ms")) {
			fprintf(stderr, "- Creating mobile #%d at BTS %s on "
				"%s with %s codec\n", lchan_num, test_case[1],
				test_case[2], test_case[3]);
			lchan[lchan_num] = create_lchan(bts[atoi(test_case[1])],
				!strcmp(test_case[2], "TCH/F"), test_case[3]);
			if (!lchan[lchan_num]) {
				printf("Failed to create lchan!\n");
				return EXIT_FAILURE;
			}
			fprintf(stderr, " * New MS is at BTS %d TS %d\n",
				lchan[lchan_num]->ts->trx->bts->nr,
				lchan[lchan_num]->ts->nr);
			lchan_num++;
			test_case += 4;
		} else
		if (!strcmp(*test_case, "set-ta")) {
			fprintf(stderr, "- Setting maximum timing advance "
				"at MS %s to %s\n", test_case[1],
				test_case[2]);
			meas_ta_ms = atoi(test_case[2]);
			test_case += 3;
		} else
		if (!strcmp(*test_case, "meas-rep")) {
			/* meas-rep <lchan-nr> <rxlev> <rxqual> <nr-of-neighbors> [<cell-idx> <rxlev> [...]] */
			int n = atoi(test_case[4]);
			struct gsm_lchan *lc = lchan[atoi(test_case[1])];
			fprintf(stderr, "- Sending measurement report from "
				"mobile #%s (rxlev=%s, rxqual=%s)\n",
				test_case[1], test_case[2], test_case[3]);
			meas_dl_rxlev = atoi(test_case[2]);
			meas_dl_rxqual = atoi(test_case[3]);
			meas_num_nc = n;
			test_case += 5;
			for (i = 0; i < n; i++) {
				int nr = atoi(test_case[0]);
				/* since our bts is not in the list of neighbor
				 * cells, we need to shift */
				if (nr >= lc->ts->trx->bts->nr)
					nr++;
				fprintf(stderr, " * Neighbor cell #%s, actual "
					"BTS %d (rxlev=%s)\n", test_case[0], nr,
					test_case[1]);
				meas_bcch_f_nc[i] = atoi(test_case[0]);
					/* bts number, not counting our own */
				meas_rxlev_nc[i] = atoi(test_case[1]);
				meas_bsic_nc[i] = 0x3f;
				test_case += 2;
			}
			got_chan_req = 0;
			gen_meas_rep(lc);
		} else
		if (!strcmp(*test_case, "congestion-check")) {
			fprintf(stderr, "- Triggering congestion check\n");
			got_chan_req = 0;
			if (algorithm == 2)
				hodec2_congestion_check(bsc_gsmnet);
			test_case += 1;
		} else
		if (!strcmp(*test_case, "expect-chan")) {
			fprintf(stderr, "- Expecting channel request at BTS %s "
				"TS %s\n", test_case[1], test_case[2]);
			if (!got_chan_req) {
				printf("Test failed, because no channel was "
					"requested\n");
				return EXIT_FAILURE;
			}
			fprintf(stderr, " * Got channel request at BTS %d "
				"TS %d\n", chan_req_lchan->ts->trx->bts->nr,
				chan_req_lchan->ts->nr);
			if (chan_req_lchan->ts->trx->bts->nr
						!= atoi(test_case[1])) {
				printf("Test failed, because channel was not "
					"requested on expected BTS\n");
				return EXIT_FAILURE;
			}
			if (chan_req_lchan->ts->nr != atoi(test_case[2])) {
				printf("Test failed, because channel was not "
					"requested on expected TS\n");
				return EXIT_FAILURE;
			}
			test_case += 3;
		} else
		if (!strcmp(*test_case, "expect-no-chan")) {
			fprintf(stderr, "- Expecting no channel request\n");
			if (got_chan_req) {
				fprintf(stderr, " * Got channel request at "
					"BTS %d TS %d\n",
					chan_req_lchan->ts->trx->bts->nr,
					chan_req_lchan->ts->nr);
				printf("Test failed, because channel was "
					"requested\n");
				return EXIT_FAILURE;
			}
			fprintf(stderr, " * Got no channel request\n");
			test_case += 1;
		} else
		if (!strcmp(*test_case, "expect-ho")) {
			fprintf(stderr, "- Expecting handover/assignment "
				"request at BTS %s TS %s\n", test_case[1],
				test_case[2]);
			if (!got_ho_req) {
				printf("Test failed, because no handover was "
					"requested\n");
				return EXIT_FAILURE;
			}
			fprintf(stderr, " * Got handover/assignment request at "
				"BTS %d TS %d\n",
				ho_req_lchan->ts->trx->bts->nr,
				ho_req_lchan->ts->nr);
			if (ho_req_lchan->ts->trx->bts->nr
							!= atoi(test_case[1])) {
				printf("Test failed, because "
					"handover/assignment was not commanded "
					"at the expected BTS\n");
				return EXIT_FAILURE;
			}
			if (ho_req_lchan->ts->nr != atoi(test_case[2])) {
				printf("Test failed, because "
					"handover/assignment was not commanded "
					"at the expected TS\n");
				return EXIT_FAILURE;
			}
			test_case += 3;
		} else
		if (!strcmp(*test_case, "ack-chan")) {
			fprintf(stderr, "- Acknowledging channel request\n");
			if (!got_chan_req) {
				printf("Cannot ack channel, because no "
					"request\n");
				return EXIT_FAILURE;
			}
			test_case += 1;
			got_ho_req = 0;
			send_chan_act_ack(chan_req_lchan, 1);
		} else
		if (!strcmp(*test_case, "ho-complete")) {
			fprintf(stderr, "- Acknowledging handover/assignment "
				"request\n");
			if (!got_chan_req) {
				printf("Cannot ack handover/assignment, "
					"because no chan request\n");
				return EXIT_FAILURE;
			}
			if (!got_ho_req) {
				printf("Cannot ack handover/assignment, "
					"because no ho request\n");
				return EXIT_FAILURE;
			}
			test_case += 1;
			got_chan_req = 0;
			got_ho_req = 0;
			/* switch lchan */
			for (i = 0; i < lchan_num; i++) {
				if (lchan[i] == ho_req_lchan) {
					fprintf(stderr, " * MS %d changes from "
						"BTS=%d TS=%d to BTS=%d "
						"TS=%d\n", i,
						lchan[i]->ts->trx->bts->nr,
						lchan[i]->ts->nr,
					       chan_req_lchan->ts->trx->bts->nr,
						chan_req_lchan->ts->nr);
					lchan[i] = chan_req_lchan;
				}
			}
			send_ho_complete(chan_req_lchan, true);
		} else
		if (!strcmp(*test_case, "ho-failed")) {
			fprintf(stderr, "- Making handover fail\n");
			if (!got_chan_req) {
				printf("Cannot fail handover, because no chan "
					"request\n");
				return EXIT_FAILURE;
			}
			test_case += 1;
			got_chan_req = 0;
			got_ho_req = 0;
			send_ho_complete(ho_req_lchan, false);
		} else
		if (!strcmp(*test_case, "print")) {
			fprintf(stderr, "\n%s\n\n", test_case[1]);
			test_case += 2;
		} else {
			printf("Unknown test command '%s', please fix!\n",
				*test_case);
			return EXIT_FAILURE;
		}
	}

	for (i = 0; i < lchan_num; i++) {
		struct gsm_subscriber_connection *conn = lchan[i]->conn;
		lchan[i]->conn = NULL;
		conn->lchan = NULL;
		osmo_fsm_inst_term(conn->fi, OSMO_FSM_TERM_REGULAR, NULL);
	}

	fprintf(stderr, "--------------------\n");

	printf("Test OK\n");

	fprintf(stderr, "--------------------\n");

	talloc_free(ctx);
	return EXIT_SUCCESS;
}

void rtp_socket_free() {}
void rtp_send_frame() {}
void rtp_socket_upstream() {}
void rtp_socket_create() {}
void rtp_socket_connect() {}
void rtp_socket_proxy() {}
void trau_mux_unmap() {}
void trau_mux_map_lchan() {}
void trau_recv_lchan() {}
void trau_send_frame() {}
int osmo_bsc_sigtran_send(struct gsm_subscriber_connection *conn, struct msgb *msg) { return 0; }
int osmo_bsc_sigtran_open_conn(struct gsm_subscriber_connection *conn, struct msgb *msg) { return 0; }
void bsc_sapi_n_reject(struct gsm_subscriber_connection *conn, int dlci) {}
void bsc_cipher_mode_compl(struct gsm_subscriber_connection *conn, struct msgb *msg, uint8_t chosen_encr) {}
int bsc_compl_l3(struct gsm_subscriber_connection *conn, struct msgb *msg, uint16_t chosen_channel)
{ return 0; }
void bsc_dtap(struct gsm_subscriber_connection *conn, uint8_t link_id, struct msgb *msg) {}
void bsc_assign_compl(struct gsm_subscriber_connection *conn, uint8_t rr_cause) {}
int bsc_clear_request(struct gsm_subscriber_connection *conn, uint32_t cause)
{ return 0; }
void bsc_cm_update(struct gsm_subscriber_connection *conn,
		   const uint8_t *cm2, uint8_t cm2_len,
		   const uint8_t *cm3, uint8_t cm3_len) {}
void bsc_mr_config(struct gsm_subscriber_connection *conn, struct gsm_lchan *lchan, int full_rate) {}
struct gsm0808_handover_required;
int bsc_send_handover_required(struct gsm_lchan *lchan,
			       const struct gsm0808_handover_required *params) { return -EINVAL; }
int bsc_send_handover_request_ack(struct gsm_subscriber_connection *conn, struct msgb *rr_ho_command)
{ return 0; }