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
|
/* GPRS SM interfaces as per 3GPP TS 24.008, TS 24.007 */
/* (C) 2023 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
* All Rights Reserved
* Author: Pau Espin Pedrol <pespin@sysmocom.de>
*
* 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/lienses/>.
*
*/
#include <stdbool.h>
#include <string.h>
#include <stdint.h>
#include <errno.h>
#include <stdio.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/prim.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/linuxlist.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/tun.h>
#include <osmocom/gsm/protocol/gsm_04_08_gprs.h>
#include <osmocom/gprs/gmm/gmm.h>
#include <osmocom/gprs/gmm/gmm_prim.h>
#include <osmocom/gprs/sndcp/sndcp.h>
#include <osmocom/gprs/sndcp/sndcp_prim.h>
#include <osmocom/gprs/sm/sm_prim.h>
#include <osmocom/gprs/sm/sm.h>
#include <osmocom/gprs/rlcmac/rlcmac_prim.h>
#include <osmocom/bb/common/settings.h>
#include <osmocom/bb/common/logging.h>
#include <osmocom/bb/common/apn.h>
#include <osmocom/bb/common/ms.h>
#include <osmocom/bb/modem/sm.h>
static int modem_sm_handle_pdp_act_cnf(struct osmocom_ms *ms, struct osmo_gprs_sm_prim *sm_prim)
{
const char *pdu_name = osmo_gprs_sm_prim_name(sm_prim);
struct osmobb_apn *apn = NULL, *apn_it;
struct osmo_netdev *netdev;
char buf_addr[INET6_ADDRSTRLEN];
char buf_addr2[INET6_ADDRSTRLEN];
int rc;
llist_for_each_entry(apn_it, &ms->gprs.apn_list, list) {
if (apn_it->fsm.fi->state == APN_ST_ACTIVATING) {
apn = apn_it;
break;
}
}
if (!apn) {
LOGP(DSM, LOGL_ERROR, "Rx %s but have no APN!\n", pdu_name);
return -ENOENT;
}
if (!sm_prim->smreg.pdp_act_cnf.accepted) {
LOGPAPN(LOGL_ERROR, apn, "Rx %s: Activate PDP failed! cause '%s'\n", pdu_name,
get_value_string(gsm48_gsm_cause_names, sm_prim->smreg.pdp_act_cnf.rej.cause));
osmo_fsm_inst_dispatch(apn->fsm.fi, APN_EV_RX_SM_ACT_PDP_CTX_REJ, NULL);
/* TODO: maybe retry ? */
return 0;
}
ms->subscr.gprs.ptmsi = sm_prim->smreg.pdp_act_cnf.acc.gmm.allocated_ptmsi;
ms->gmmlayer.tlli = sm_prim->smreg.pdp_act_cnf.acc.gmm.allocated_tlli;
apn->pdp.pdp_addr_ietf_type = sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_ietf_type;
netdev = osmo_tundev_get_netdev(apn->tun);
switch (sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_ietf_type) {
case OSMO_GPRS_SM_PDP_ADDR_IETF_IPV4:
LOGPAPN(LOGL_INFO, apn, "Rx %s: IPv4=%s\n", pdu_name,
osmo_sockaddr_ntop(&sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v4.u.sa, buf_addr));
memcpy(&apn->pdp.pdp_addr_v4, &sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v4, sizeof(struct osmo_sockaddr));
rc = osmo_netdev_add_addr(netdev, &sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v4, 30);
if (rc < 0) {
LOGPAPN(LOGL_ERROR, apn, "Rx %s: Failed setting IPv4=%s\n", pdu_name,
osmo_sockaddr_ntop(&sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v4.u.sa, buf_addr));
return rc;
}
break;
case OSMO_GPRS_SM_PDP_ADDR_IETF_IPV6:
LOGPAPN(LOGL_INFO, apn, "Rx %s: IPv6=%s [FIXME: IPv6 not yet supported!]\n", pdu_name,
osmo_sockaddr_ntop(&sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v6.u.sa, buf_addr));
memcpy(&apn->pdp.pdp_addr_v6, &sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v6, sizeof(struct osmo_sockaddr));
rc = osmo_netdev_add_addr(netdev, &sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v6, 64);
if (rc < 0) {
LOGPAPN(LOGL_ERROR, apn, "Rx %s: Failed setting IPv6=%s\n", pdu_name,
osmo_sockaddr_ntop(&sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v6.u.sa, buf_addr));
return rc;
}
break;
case OSMO_GPRS_SM_PDP_ADDR_IETF_IPV4V6:
LOGPAPN(LOGL_INFO, apn, "Rx %s: IPv4=%s IPv6=%s [FIXME: IPv6 not yet supported!]\n", pdu_name,
osmo_sockaddr_ntop(&sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v4.u.sa, buf_addr),
osmo_sockaddr_ntop(&sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v6.u.sa, buf_addr2));
memcpy(&apn->pdp.pdp_addr_v4, &sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v4, sizeof(struct osmo_sockaddr));
memcpy(&apn->pdp.pdp_addr_v6, &sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v6, sizeof(struct osmo_sockaddr));
rc = osmo_netdev_add_addr(netdev, &sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v4, 30);
if (rc < 0) {
LOGPAPN(LOGL_ERROR, apn, "Rx %s: Failed setting IPv4=%s\n", pdu_name,
osmo_sockaddr_ntop(&sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v4.u.sa, buf_addr));
return rc;
}
rc = osmo_netdev_add_addr(netdev, &sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v6, 64);
if (rc < 0) {
LOGPAPN(LOGL_ERROR, apn, "Rx %s: Failed setting IPv6=%s\n", pdu_name,
osmo_sockaddr_ntop(&sm_prim->smreg.pdp_act_cnf.acc.pdp_addr_v6.u.sa, buf_addr));
return rc;
}
break;
default:
OSMO_ASSERT(0);
}
/* TODO: Handle PCO */
/* TODO: Handle QoS */
osmo_fsm_inst_dispatch(apn->fsm.fi, APN_EV_RX_SM_ACT_PDP_CTX_ACC, NULL);
return rc;
}
static int modem_sm_prim_up_cb(struct osmo_gprs_sm_prim *sm_prim, void *user_data)
{
const char *pdu_name = osmo_gprs_sm_prim_name(sm_prim);
struct osmocom_ms *ms = user_data;
int rc = 0;
switch (sm_prim->oph.sap) {
case OSMO_GPRS_SM_SAP_SMREG:
switch (OSMO_PRIM_HDR(&sm_prim->oph)) {
case OSMO_PRIM(OSMO_GPRS_SM_SMREG_PDP_ACTIVATE, PRIM_OP_CONFIRM):
modem_sm_handle_pdp_act_cnf(ms, sm_prim);
break;
case OSMO_PRIM(OSMO_GPRS_SM_SMREG_PDP_ACTIVATE, PRIM_OP_INDICATION):
case OSMO_PRIM(OSMO_GPRS_SM_SMREG_PDP_DEACTIVATE, PRIM_OP_CONFIRM):
case OSMO_PRIM(OSMO_GPRS_SM_SMREG_PDP_DEACTIVATE, PRIM_OP_INDICATION):
case OSMO_PRIM(OSMO_GPRS_SM_SMREG_PDP_MODIFY, PRIM_OP_CONFIRM):
case OSMO_PRIM(OSMO_GPRS_SM_SMREG_PDP_MODIFY, PRIM_OP_INDICATION):
case OSMO_PRIM(OSMO_GPRS_SM_SMREG_PDP_ACTIVATE_SEC, PRIM_OP_CONFIRM):
default:
LOGP(DSM, LOGL_ERROR, "%s(): Rx %s UNIMPLEMENTED\n", __func__, pdu_name);
break;
};
break;
default:
LOGP(DSM, LOGL_ERROR, "%s(): Unexpected Rx %s\n", __func__, pdu_name);
OSMO_ASSERT(0);
}
return rc;
}
int modem_sm_prim_sndcp_up_cb(struct osmo_gprs_sndcp_prim *sndcp_prim, void *user_data)
{
const char *pdu_name = osmo_gprs_sndcp_prim_name(sndcp_prim);
int rc;
switch (sndcp_prim->oph.sap) {
case OSMO_GPRS_SNDCP_SAP_SNSM:
switch (OSMO_PRIM_HDR(&sndcp_prim->oph)) {
case OSMO_PRIM(OSMO_GPRS_SNDCP_SNSM_ACTIVATE, PRIM_OP_INDICATION):
LOGP(DSM, LOGL_INFO, "%s(): Rx %s\n", __func__, pdu_name);
rc = osmo_gprs_sndcp_prim_dispatch_snsm(sndcp_prim);
rc = 1; /* Tell SM that we take ownership of the prim. */
break;
default:
LOGP(DSM, LOGL_ERROR, "%s(): Unexpected Rx %s\n", __func__, pdu_name);
OSMO_ASSERT(0);
}
break;
default:
LOGP(DSM, LOGL_ERROR, "%s(): Unexpected Rx %s\n", __func__, pdu_name);
OSMO_ASSERT(0);
}
return rc;
}
static int modem_sm_prim_down_cb(struct osmo_gprs_sm_prim *sm_prim, void *user_data)
{
const char *pdu_name = osmo_gprs_sm_prim_name(sm_prim);
int rc = 0;
switch (sm_prim->oph.sap) {
default:
LOGP(DSM, LOGL_ERROR, "%s(): Unexpected Rx %s\n", __func__, pdu_name);
OSMO_ASSERT(0);
}
return rc;
}
static int modem_sm_prim_gmm_down_cb(struct osmo_gprs_gmm_prim *gmm_prim, void *user_data)
{
int rc;
rc = osmo_gprs_gmm_prim_upper_down(gmm_prim);
/* GMM took ownership of the message, tell SM layer to not free it: */
rc = 1;
return rc;
}
int modem_sm_init(struct osmocom_ms *ms)
{
int rc;
rc = osmo_gprs_sm_init(OSMO_GPRS_SM_LOCATION_MS);
if (rc != 0)
return rc;
osmo_gprs_sm_set_log_cat(OSMO_GPRS_SM_LOGC_SM, DSM);
osmo_gprs_sm_prim_set_up_cb(modem_sm_prim_up_cb, ms);
osmo_gprs_sm_prim_set_sndcp_up_cb(modem_sm_prim_sndcp_up_cb, ms);
osmo_gprs_sm_prim_set_down_cb(modem_sm_prim_down_cb, ms);
osmo_gprs_sm_prim_set_gmm_down_cb(modem_sm_prim_gmm_down_cb, ms);
return rc;
}
int modem_sm_smreg_pdp_act_req(const struct osmocom_ms *ms, const struct osmobb_apn *apn)
{
struct osmo_gprs_sm_prim *sm_prim;
const struct gsm_subscriber *subscr = &ms->subscr;
enum osmo_gprs_sm_pdp_addr_ietf_type pdp_addr_ietf_type;
struct osmo_sockaddr pdp_addr_any = {0};
int rc;
if (apn->cfg.apn_type_mask & APN_TYPE_IPv4v6) {
pdp_addr_ietf_type = OSMO_GPRS_SM_PDP_ADDR_IETF_IPV4V6;
} else if (apn->cfg.apn_type_mask & APN_TYPE_IPv4) {
pdp_addr_ietf_type = OSMO_GPRS_SM_PDP_ADDR_IETF_IPV4;
} else if (apn->cfg.apn_type_mask & APN_TYPE_IPv6) {
pdp_addr_ietf_type = OSMO_GPRS_SM_PDP_ADDR_IETF_IPV6;
} else {
LOGP(DSM, LOGL_ERROR, "APN '%s' has no PDP address type set\n", apn->cfg.name);
return -EINVAL;
}
sm_prim = osmo_gprs_sm_prim_alloc_smreg_pdp_act_req();
sm_prim->smreg.pdp_act_req.nsapi = apn->pdp.nsapi;
sm_prim->smreg.pdp_act_req.llc_sapi = apn->pdp.llc_sapi;
sm_prim->smreg.pdp_act_req.pdp_addr_ietf_type = pdp_addr_ietf_type;
sm_prim->smreg.pdp_act_req.pdp_addr_v4 = pdp_addr_any;
sm_prim->smreg.pdp_act_req.pdp_addr_v6 = pdp_addr_any;
memcpy(sm_prim->smreg.pdp_act_req.qos, apn->pdp.qos, apn->pdp.qos_len);
sm_prim->smreg.pdp_act_req.qos_len = apn->pdp.qos_len;
memcpy(sm_prim->smreg.pdp_act_req.pco, apn->pdp.pco, apn->pdp.pco_len);
sm_prim->smreg.pdp_act_req.pco_len = apn->pdp.pco_len;
OSMO_STRLCPY_ARRAY(sm_prim->smreg.pdp_act_req.apn, apn->cfg.name);
sm_prim->smreg.pdp_act_req.gmm.ptmsi = subscr->gprs.ptmsi;
sm_prim->smreg.pdp_act_req.gmm.ptmsi_sig = subscr->gprs.ptmsi;
OSMO_STRLCPY_ARRAY(sm_prim->smreg.pdp_act_req.gmm.imsi, subscr->imsi);
OSMO_STRLCPY_ARRAY(sm_prim->smreg.pdp_act_req.gmm.imei, ms->settings.imei);
OSMO_STRLCPY_ARRAY(sm_prim->smreg.pdp_act_req.gmm.imeisv, ms->settings.imeisv);
memcpy(&sm_prim->smreg.pdp_act_req.gmm.old_rai, &subscr->gprs.rai, sizeof(subscr->gprs.rai));
rc = osmo_gprs_sm_prim_upper_down(sm_prim);
if (rc < 0)
LOGP(DSM, LOGL_ERROR, "Failed submitting SMREG-PDP_ACT_REQ.req\n");
return rc;
}
|
