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
|
/* Test the SGSN */
/*
* (C) 2014 by Holger Hans Peter Freyther
* (C) 2014 by sysmocom s.f.m.c. GmbH
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <openbsc/gprs_llc.h>
#include <openbsc/sgsn.h>
#include <openbsc/gprs_gmm.h>
#include <openbsc/debug.h>
#include <osmocom/gsm/gsm_utils.h>
#include <osmocom/core/application.h>
#include <osmocom/core/msgb.h>
#include <stdio.h>
extern void *tall_msgb_ctx;
void *tall_bsc_ctx;
static struct sgsn_instance sgsn_inst = {
.config_file = "osmo_sgsn.cfg",
.cfg = {
.gtp_statedir = "./",
.acl_enabled = 1,
},
};
struct sgsn_instance *sgsn = &sgsn_inst;
static int count(struct llist_head *head)
{
struct llist_head *cur;
int count = 0;
llist_for_each(cur, head)
count += 1;
return count;
}
static struct msgb *create_msg(const uint8_t *data, size_t len)
{
struct msgb *msg = msgb_alloc(len + 8, "test message");
msg->l1h = msgb_put(msg, 8);
msg->l2h = msgb_put(msg, len);
memcpy(msg->l2h, data, len);
msgb_bcid(msg) = msg->l1h;
msgb_gmmh(msg) = msg->l2h;
return msg;
}
static void test_llme(void)
{
struct gprs_llc_lle *lle, *lle_copy;
uint32_t local_tlli;
uint32_t foreign_tlli;
printf("Testing LLME allocations\n");
local_tlli = gprs_tmsi2tlli(0x234, TLLI_LOCAL);
foreign_tlli = gprs_tmsi2tlli(0x234, TLLI_FOREIGN);
/* initial state */
OSMO_ASSERT(count(gprs_llme_list()) == 0);
/* Create a new entry */
lle = gprs_lle_get_or_create(local_tlli, 3);
OSMO_ASSERT(lle);
OSMO_ASSERT(count(gprs_llme_list()) == 1);
/* No new entry is created */
lle_copy = gprs_lle_get_or_create(local_tlli, 3);
OSMO_ASSERT(lle == lle_copy);
OSMO_ASSERT(count(gprs_llme_list()) == 1);
lle_copy = gprs_lle_get_or_create(foreign_tlli, 3);
OSMO_ASSERT(lle == lle_copy);
OSMO_ASSERT(count(gprs_llme_list()) == 1);
/* unassign which should delete it*/
gprs_llgmm_assign(lle->llme, lle->llme->tlli, 0xffffffff, GPRS_ALGO_GEA0, NULL);
/* Check that everything was cleaned up */
OSMO_ASSERT(count(gprs_llme_list()) == 0);
}
/*
* Test that a GMM Detach will remove the MMCTX and the
* associated LLME.
*/
static void test_gmm_detach(void)
{
struct gprs_ra_id raid = { 0, };
struct sgsn_mm_ctx *ctx, *ictx;
struct gprs_llc_lle *lle;
uint32_t local_tlli;
struct msgb *msg;
printf("Testing GMM detach\n");
/* DTAP - Detach Request (MO) */
/* normal detach, power_off = 0 */
static const unsigned char detach_req[] = {
0x08, 0x05, 0x01, 0x18, 0x05, 0xf4, 0xef, 0xe2,
0xb7, 0x00, 0x19, 0x03, 0xb9, 0x97, 0xcb
};
/* Create a conext and search for it */
OSMO_ASSERT(count(gprs_llme_list()) == 0);
local_tlli = gprs_tmsi2tlli(0x23, TLLI_LOCAL);
lle = gprs_lle_get_or_create(local_tlli, 3);
ctx = sgsn_mm_ctx_alloc(local_tlli, &raid);
ctx->mm_state = GMM_REGISTERED_NORMAL;
ctx->llme = lle->llme;
ictx = sgsn_mm_ctx_by_tlli(local_tlli, &raid);
OSMO_ASSERT(ictx == ctx);
OSMO_ASSERT(count(gprs_llme_list()) == 1);
/* inject the detach */
msg = create_msg(detach_req, ARRAY_SIZE(detach_req));
msgb_tlli(msg) = local_tlli;
gsm0408_gprs_rcvmsg(msg, ctx->llme);
msgb_free(msg);
/* verify that things are gone */
OSMO_ASSERT(count(gprs_llme_list()) == 0);
ictx = sgsn_mm_ctx_by_tlli(local_tlli, &raid);
OSMO_ASSERT(!ictx);
}
static struct log_info_cat gprs_categories[] = {
[DMM] = {
.name = "DMM",
.description = "Layer3 Mobility Management (MM)",
.color = "\033[1;33m",
.enabled = 1, .loglevel = LOGL_NOTICE,
},
[DPAG] = {
.name = "DPAG",
.description = "Paging Subsystem",
.color = "\033[1;38m",
.enabled = 1, .loglevel = LOGL_NOTICE,
},
[DMEAS] = {
.name = "DMEAS",
.description = "Radio Measurement Processing",
.enabled = 0, .loglevel = LOGL_NOTICE,
},
[DREF] = {
.name = "DREF",
.description = "Reference Counting",
.enabled = 0, .loglevel = LOGL_NOTICE,
},
[DGPRS] = {
.name = "DGPRS",
.description = "GPRS Packet Service",
.enabled = 1, .loglevel = LOGL_DEBUG,
},
[DNS] = {
.name = "DNS",
.description = "GPRS Network Service (NS)",
.enabled = 1, .loglevel = LOGL_INFO,
},
[DBSSGP] = {
.name = "DBSSGP",
.description = "GPRS BSS Gateway Protocol (BSSGP)",
.enabled = 1, .loglevel = LOGL_DEBUG,
},
[DLLC] = {
.name = "DLLC",
.description = "GPRS Logical Link Control Protocol (LLC)",
.enabled = 1, .loglevel = LOGL_DEBUG,
},
[DSNDCP] = {
.name = "DSNDCP",
.description = "GPRS Sub-Network Dependent Control Protocol (SNDCP)",
.enabled = 1, .loglevel = LOGL_DEBUG,
},
};
static struct log_info info = {
.cat = gprs_categories,
.num_cat = ARRAY_SIZE(gprs_categories),
};
int main(int argc, char **argv)
{
osmo_init_logging(&info);
tall_bsc_ctx = talloc_named_const(NULL, 0, "osmo_sgsn");
tall_msgb_ctx = talloc_named_const(tall_bsc_ctx, 0, "msgb");
test_llme();
test_gmm_detach();
printf("Done\n");
return 0;
}
/* stubs */
struct osmo_prim_hdr;
int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx)
{
abort();
}
|
