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
|
/* SCCP User SAP helper functions */
/* (C) 2015 by Harald Welte <laforge@gnumonks.org>
* (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 <string.h>
#include <osmocom/sigtran/sccp_sap.h>
#include <osmocom/sigtran/sua.h>
#include <osmocom/sigtran/sccp_helpers.h>
void osmo_sccp_make_addr_pc_ssn(struct osmo_sccp_addr *addr, uint32_t pc, uint32_t ssn)
{
addr->presence = OSMO_SCCP_ADDR_T_SSN | OSMO_SCCP_ADDR_T_PC;
addr->ssn = ssn;
addr->pc = pc;
}
int osmo_sccp_tx_unitdata(struct osmo_sccp_link *link,
const struct osmo_sccp_addr *calling_addr,
const struct osmo_sccp_addr *called_addr,
uint8_t *data, unsigned int len)
{
struct msgb *msg = msgb_alloc(1024, "sccp_tx_unitdata");
struct osmo_scu_prim *prim;
struct osmo_scu_unitdata_param *param;
prim = (struct osmo_scu_prim *) msgb_put(msg, sizeof(*prim));
param = &prim->u.unitdata;
memcpy(¶m->calling_addr, calling_addr, sizeof(*calling_addr));
memcpy(¶m->called_addr, called_addr, sizeof(*called_addr));
osmo_prim_init(&prim->oph, SCCP_SAP_USER, OSMO_SCU_PRIM_N_UNITDATA, PRIM_OP_REQUEST, msg);
msg->l2h = msgb_put(msg, len);
memcpy(msg->l2h, data, len);
return osmo_sua_user_link_down(link, &prim->oph);
}
int osmo_sccp_tx_unitdata_ranap(struct osmo_sccp_link *link,
uint32_t src_point_code,
uint32_t dst_point_code,
uint8_t *data, unsigned int len)
{
struct osmo_sccp_addr calling_addr;
struct osmo_sccp_addr called_addr;
osmo_sccp_make_addr_pc_ssn(&calling_addr, src_point_code,
OSMO_SCCP_SSN_RANAP);
osmo_sccp_make_addr_pc_ssn(&called_addr, dst_point_code,
OSMO_SCCP_SSN_RANAP);
return osmo_sccp_tx_unitdata(link, &calling_addr, &called_addr,
data, len);
}
int osmo_sccp_tx_unitdata_msg(struct osmo_sccp_link *link,
const struct osmo_sccp_addr *calling_addr,
const struct osmo_sccp_addr *called_addr,
struct msgb *msg)
{
int rc;
rc = osmo_sccp_tx_unitdata(link, calling_addr, called_addr,
msg->data, msgb_length(msg));
msgb_free(msg);
return rc;
}
int osmo_sccp_tx_conn_req(struct osmo_sccp_link *link, uint32_t conn_id,
const struct osmo_sccp_addr *calling_addr,
const struct osmo_sccp_addr *called_addr,
uint8_t *data, unsigned int len)
{
struct msgb *msg = msgb_alloc(1024, "sccp_tx_conn_req");
struct osmo_scu_prim *prim;
prim = (struct osmo_scu_prim *) msgb_put(msg, sizeof(*prim));
osmo_prim_init(&prim->oph, SCCP_SAP_USER,
OSMO_SCU_PRIM_N_CONNECT,
PRIM_OP_REQUEST, msg);
osmo_sccp_make_addr_pc_ssn(&prim->u.connect.calling_addr, 1,
OSMO_SCCP_SSN_RANAP);
prim->u.connect.sccp_class = 2;
prim->u.connect.conn_id = conn_id;
if (data && len) {
msg->l2h = msgb_put(msg, len);
memcpy(msg->l2h, data, len);
}
return osmo_sua_user_link_down(link, &prim->oph);
}
int osmo_sccp_tx_conn_req_msg(struct osmo_sccp_link *link, uint32_t conn_id,
const struct osmo_sccp_addr *calling_addr,
const struct osmo_sccp_addr *called_addr,
struct msgb *msg)
{
int rc;
rc = osmo_sccp_tx_conn_req(link, conn_id, calling_addr, called_addr,
msg->data, msgb_length(msg));
msgb_free(msg);
return rc;
}
int osmo_sccp_tx_data(struct osmo_sccp_link *link, uint32_t conn_id,
uint8_t *data, unsigned int len)
{
struct msgb *msg = msgb_alloc(1024, "sccp_tx_data");
struct osmo_scu_prim *prim;
prim = (struct osmo_scu_prim *) msgb_put(msg, sizeof(*prim));
osmo_prim_init(&prim->oph, SCCP_SAP_USER,
OSMO_SCU_PRIM_N_DATA,
PRIM_OP_REQUEST, msg);
prim->u.data.conn_id = conn_id;
msg->l2h = msgb_put(msg, len);
memcpy(msg->l2h, data, len);
return osmo_sua_user_link_down(link, &prim->oph);
}
int osmo_sccp_tx_data_msg(struct osmo_sccp_link *link, uint32_t conn_id,
struct msgb *msg)
{
int rc;
rc = osmo_sccp_tx_data(link, conn_id, msg->data, msgb_length(msg));
msgb_free(msg);
return rc;
}
|
