aboutsummaryrefslogtreecommitdiffstats
path: root/tests/handover/handover_test.c
blob: 6d7e6d1e28150ca29664d2741d8ee4ab046a8637 (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
#include <stdint.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <sched.h>
#include <sys/signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>

#include <netinet/in.h>
#include <arpa/inet.h>
#include <net/if.h>

#include <osmocom/core/talloc.h>
#include <osmocom/core/application.h>
#include <osmocom/vty/telnet_interface.h>
#include <osmocom/vty/logging.h>
#include <osmocom/core/gsmtap.h>
#include <osmocom/core/gsmtap_util.h>
#include <osmocom/core/bits.h>
#include <osmocom/core/backtrace.h>
#include <osmocom/abis/abis.h>

#include <osmo-bts/gsm_data.h>
#include <osmo-bts/logging.h>
#include <osmo-bts/abis.h>
#include <osmo-bts/bts.h>
#include <osmo-bts/vty.h>
#include <osmo-bts/bts_model.h>
#include <osmo-bts/pcu_if.h>
#include <osmo-bts/l1sap.h>
#include <osmo-bts/handover.h>

uint8_t phys_info[] = { 0x03, 0x03, 0x0d, 0x06, 0x2d, 0x00, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b };

static struct gsm_bts *bts;
struct gsm_bts_trx *trx;
int quit = 0;
uint8_t abis_mac[6] = { 0, 1, 2, 3, 4, 5 };
const int pcu_direct = 0;
int modify_count = 0;

static void expect_phys_info(struct lapdm_entity *le)
{
	struct osmo_phsap_prim pp;
	int rc;

	rc = lapdm_phsap_dequeue_prim(le, &pp);
	OSMO_ASSERT(rc == 0);
	OSMO_ASSERT(sizeof(phys_info) == pp.oph.msg->len);
	OSMO_ASSERT(!memcmp(phys_info, pp.oph.msg->data, pp.oph.msg->len));
	msgb_free(pp.oph.msg);
}

int main(int argc, char **argv)
{
	struct gsm_bts_role_bts *btsb;
	void *tall_bts_ctx;
	void *tall_msgb_ctx;
	struct e1inp_line *line;
	struct gsm_lchan *lchan;
	struct osmo_phsap_prim nl1sap;
	struct msgb *msg;
	struct abis_rsl_dchan_hdr *rslh;
	int i;

	tall_bts_ctx = talloc_named_const(NULL, 1, "OsmoBTS context");
	tall_msgb_ctx = talloc_named_const(tall_bts_ctx, 1, "msgb");
	msgb_set_talloc_ctx(tall_msgb_ctx);

	bts_log_init(NULL);
	osmo_stderr_target->categories[DHO].loglevel = LOGL_DEBUG;

	bts = gsm_bts_alloc(tall_bts_ctx);
	if (!bts) {
		fprintf(stderr, "Failed to create BTS structure\n");
		exit(1);
	}
	trx = gsm_bts_trx_alloc(bts);
	if (!trx) {
		fprintf(stderr, "Failed to TRX structure\n");
		exit(1);
	}

	if (bts_init(bts) < 0) {
		fprintf(stderr, "unable to to open bts\n");
		exit(1);
	}

	btsb = bts_role_bts(bts);

	libosmo_abis_init(NULL);

	line = e1inp_line_create(0, "ipa");
	OSMO_ASSERT(line);

	e1inp_ts_config_sign(&line->ts[E1INP_SIGN_RSL-1], line);
	trx->rsl_link = e1inp_sign_link_create(&line->ts[E1INP_SIGN_RSL-1], E1INP_SIGN_RSL, NULL, 0, 0);
	OSMO_ASSERT(trx->rsl_link);
	trx->rsl_link->trx = trx;

	fprintf(stderr, "test 1: without timeout\n");

	/* create two lchans for handover */
	lchan = &trx->ts[1].lchan[0];
	l1sap_chan_act(lchan->ts->trx, 0x09, NULL);
	lchan = &trx->ts[2].lchan[0];
	lchan->ho.active = HANDOVER_ENABLED;
	lchan->ho.ref = 23;
	l1sap_chan_act(lchan->ts->trx, 0x0a, NULL);
	OSMO_ASSERT(msgb_dequeue(&trx->rsl_link->tx_list));
	OSMO_ASSERT(msgb_dequeue(&trx->rsl_link->tx_list));
	OSMO_ASSERT(!msgb_dequeue(&trx->rsl_link->tx_list));

	/* send access burst with wrong ref */
	memset(&nl1sap, 0, sizeof(nl1sap));
	osmo_prim_init(&nl1sap.oph, SAP_GSM_PH, PRIM_PH_RACH, PRIM_OP_INDICATION, NULL);
	nl1sap.u.rach_ind.chan_nr = 0x0a;
	nl1sap.u.rach_ind.ra = 42;
	l1sap_up(trx, &nl1sap);

	/* expect no action */
	OSMO_ASSERT(modify_count == 0);
	OSMO_ASSERT(!msgb_dequeue(&trx->rsl_link->tx_list));

	/* send access burst with correct ref */
	nl1sap.u.rach_ind.ra = 23;
	l1sap_up(trx, &nl1sap);
	OSMO_ASSERT(modify_count == 1);

	/* expect PHYS INFO */
	expect_phys_info(&trx->ts[2].lchan[0].lapdm_ch.lapdm_dcch);

	/* expect exactly one HO.DET */
	OSMO_ASSERT(msg = msgb_dequeue(&trx->rsl_link->tx_list));
	rslh = msgb_l2(msg);
	OSMO_ASSERT(rslh->c.msg_type == RSL_MT_HANDO_DET);
	OSMO_ASSERT(!msgb_dequeue(&trx->rsl_link->tx_list));

	/* expect T3105 running */
	OSMO_ASSERT(osmo_timer_pending(&trx->ts[2].lchan[0].ho.t3105))

	/* indicate frame */
	handover_frame(&trx->ts[2].lchan[0]);

	/* expect T3105 not running */
	OSMO_ASSERT(!osmo_timer_pending(&trx->ts[2].lchan[0].ho.t3105))

	fprintf(stderr, "test 2: with timeout\n");

	/* enable handover again */
	lchan = &trx->ts[2].lchan[0];
	lchan->ho.active = HANDOVER_ENABLED;
	lchan->ho.ref = 23;
	modify_count = 0;

	/* send access burst with correct ref */
	nl1sap.u.rach_ind.ra = 23;
	l1sap_up(trx, &nl1sap);
	OSMO_ASSERT(modify_count == 1);

	/* expect PHYS INFO */
	expect_phys_info(&trx->ts[2].lchan[0].lapdm_ch.lapdm_dcch);

	/* expect exactly one HO.DET */
	OSMO_ASSERT(msg = msgb_dequeue(&trx->rsl_link->tx_list));
	rslh = msgb_l2(msg);
	OSMO_ASSERT(rslh->c.msg_type == RSL_MT_HANDO_DET);
	OSMO_ASSERT(!msgb_dequeue(&trx->rsl_link->tx_list));

	for (i = 0; i < btsb->ny1 - 1; i++) {
		/* expect T3105 running */
		OSMO_ASSERT(osmo_timer_pending(&trx->ts[2].lchan[0].ho.t3105))

		/* timeout T3105 */
		gettimeofday(&trx->ts[2].lchan[0].ho.t3105.timeout, NULL);
		osmo_select_main(0);

		/* expect PHYS INFO */
		expect_phys_info(&trx->ts[2].lchan[0].lapdm_ch.lapdm_dcch);
	}

	/* timeout T3105 */
	gettimeofday(&trx->ts[2].lchan[0].ho.t3105.timeout, NULL);
	osmo_select_main(0);

	/* expect T3105 not running */
	OSMO_ASSERT(!osmo_timer_pending(&trx->ts[2].lchan[0].ho.t3105))

	/* expect exactly one CONN.FAIL */
	OSMO_ASSERT(msg = msgb_dequeue(&trx->rsl_link->tx_list));
	rslh = msgb_l2(msg);
	OSMO_ASSERT(rslh->c.msg_type == RSL_MT_CONN_FAIL);
	OSMO_ASSERT(!msgb_dequeue(&trx->rsl_link->tx_list));

#if 0
	while (!quit) {
		log_reset_context();
		osmo_select_main(0);
	}
#endif

	printf("Success\n");

	return 0;
}

void bts_model_abis_close(struct gsm_bts *bts)
{
}

int bts_model_oml_estab(struct gsm_bts *bts)
{
	return 0;
}

int bts_model_l1sap_down(struct gsm_bts_trx *trx, struct osmo_phsap_prim *l1sap)
{
	int rc = 0;
	uint8_t chan_nr;
	uint8_t tn, ss;
	struct gsm_lchan *lchan;
	struct msgb *msg = l1sap->oph.msg;
	struct osmo_phsap_prim nl1sap;

	switch (OSMO_PRIM_HDR(&l1sap->oph)) {
	case OSMO_PRIM(PRIM_MPH_INFO, PRIM_OP_REQUEST):
		switch (l1sap->u.info.type) {
		case PRIM_INFO_ACTIVATE:
			chan_nr = l1sap->u.info.u.act_req.chan_nr;
			tn = L1SAP_CHAN2TS(chan_nr);
			ss = l1sap_chan2ss(chan_nr);
			lchan = &trx->ts[tn].lchan[ss];

			lchan_init_lapdm(lchan);

			lchan_set_state(lchan, LCHAN_S_ACTIVE);

			memset(&nl1sap, 0, sizeof(nl1sap));
			osmo_prim_init(&nl1sap.oph, SAP_GSM_PH, PRIM_MPH_INFO, PRIM_OP_CONFIRM, NULL);
			nl1sap.u.info.type = PRIM_INFO_ACTIVATE;
			nl1sap.u.info.u.act_cnf.chan_nr = chan_nr;
			return l1sap_up(trx, &nl1sap);
		case PRIM_INFO_MODIFY:
			modify_count++;
			break;
		default:
			LOGP(DL1C, LOGL_NOTICE, "unknown MPH-INFO.req %d\n",
				l1sap->u.info.type);
			rc = -EINVAL;
			goto done;
		}
		break;
	default:
		LOGP(DL1C, LOGL_NOTICE, "unknown prim %d op %d\n",
		l1sap->oph.primitive, l1sap->oph.operation);
		rc = -EINVAL;
		goto done;
	}

done:
	if (msg)
		msgb_free(msg);
	return rc;
}

int bts_model_check_oml(struct gsm_bts *bts, uint8_t msg_type, struct tlv_parsed *old_attr, struct tlv_parsed *new_attr, void *obj) { return 0; }
int bts_model_apply_oml(struct gsm_bts *bts, struct msgb *msg, struct tlv_parsed *new_attr, int obj_kind, void *obj) { return 0; }
int bts_model_opstart(struct gsm_bts *bts, struct gsm_abis_mo *mo, void *obj) { return 0; }
int bts_model_chg_adm_state(struct gsm_bts *bts, struct gsm_abis_mo *mo, void *obj, uint8_t adm_state) { return 0; }
int bts_model_init(struct gsm_bts *bts) { return 0; }
int bts_model_trx_deact_rf(struct gsm_bts_trx *trx) { return 0; }
int bts_model_trx_close(struct gsm_bts_trx *trx) { return 0; }
void trx_get_hlayer1(void) {}
int bts_model_adjst_ms_pwr(struct gsm_lchan *lchan) { return 0; }