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
|
/* Implementation for MSC decisions which interface to send messages out on. */
/* (C) 2016 by sysmocom s.m.f.c GmbH <info@sysmocom.de>
*
* 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 <osmocom/core/logging.h>
#include <osmocom/msc/debug.h>
#include <osmocom/msc/gsm_data.h>
#include <osmocom/msc/msc_ifaces.h>
#include <osmocom/msc/gsm_subscriber.h>
#include <osmocom/msc/transaction.h>
#include <osmocom/mgcp_client/mgcp_client.h>
#include <osmocom/msc/vlr.h>
#include <osmocom/msc/a_iface.h>
#include <osmocom/msc/sgs_iface.h>
#include <osmocom/msc/gsm_04_08.h>
#include <osmocom/msc/msc_mgcp.h>
#include "../../bscconfig.h"
#ifdef BUILD_IU
#include <osmocom/ranap/iu_client.h>
#else
#include <osmocom/msc/iu_dummy.h>
#endif /* BUILD_IU */
static int msc_tx(struct ran_conn *conn, struct msgb *msg)
{
if (!msg)
return -EINVAL;
if (!conn) {
msgb_free(msg);
return -EINVAL;
}
DEBUGP(DMSC, "msc_tx %u bytes to %s via %s\n",
msg->len, vlr_subscr_name(conn->vsub),
osmo_rat_type_name(conn->via_ran));
switch (conn->via_ran) {
case OSMO_RAT_GERAN_A:
msg->dst = conn;
return a_iface_tx_dtap(msg);
case OSMO_RAT_UTRAN_IU:
msg->dst = conn->iu.ue_ctx;
return ranap_iu_tx(msg, 0);
case OSMO_RAT_EUTRAN_SGS:
msg->dst = conn;
return sgs_iface_tx_dtap_ud(msg);
default:
LOGP(DMSC, LOGL_ERROR,
"msc_tx(): conn->via_ran invalid (%d)\n",
conn->via_ran);
msgb_free(msg);
return -1;
}
}
int msc_tx_dtap(struct ran_conn *conn,
struct msgb *msg)
{
return msc_tx(conn, msg);
}
/* 9.2.5 CM service accept */
int msc_gsm48_tx_mm_serv_ack(struct ran_conn *conn)
{
struct msgb *msg;
struct gsm48_hdr *gh;
if (!conn)
return -EINVAL;
msg = gsm48_msgb_alloc_name("GSM 04.08 SERV ACC");
gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh));
gh->proto_discr = GSM48_PDISC_MM;
gh->msg_type = GSM48_MT_MM_CM_SERV_ACC;
DEBUGP(DMM, "-> CM SERVICE ACCEPT %s\n",
vlr_subscr_name(conn->vsub));
return msc_tx_dtap(conn, msg);
}
/* 9.2.6 CM service reject */
int msc_gsm48_tx_mm_serv_rej(struct ran_conn *conn,
enum gsm48_reject_value value)
{
struct msgb *msg;
if (!conn)
return -EINVAL;
msg = gsm48_create_mm_serv_rej(value);
if (!msg) {
LOGP(DMM, LOGL_ERROR, "Failed to allocate CM Service Reject.\n");
return -1;
}
DEBUGP(DMM, "-> CM SERVICE Reject cause: %d\n", value);
return msc_tx_dtap(conn, msg);
}
int msc_tx_common_id(struct ran_conn *conn)
{
if (!conn)
return -EINVAL;
/* Common ID is only sent over IuCS */
if (conn->via_ran != OSMO_RAT_UTRAN_IU) {
LOGP(DMM, LOGL_INFO,
"%s: Asked to transmit Common ID, but skipping"
" because this is not on UTRAN\n",
vlr_subscr_name(conn->vsub));
return 0;
}
DEBUGP(DIUCS, "%s: tx CommonID %s\n",
vlr_subscr_name(conn->vsub), conn->vsub->imsi);
return ranap_iu_tx_common_id(conn->iu.ue_ctx, conn->vsub->imsi);
}
|
