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
279
280
281
282
283
284
285
286
287
|
/* GSM Radio Signalling Link messages on the A-bis interface
* 3GPP TS 08.58 version 8.6.0 Release 1999 / ETSI TS 100 596 V8.6.0 */
/* (C) 2008-2009 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <osmocore/tlv.h>
#include <osmocore/rsl.h>
void rsl_init_rll_hdr(struct abis_rsl_rll_hdr *dh, uint8_t msg_type)
{
dh->c.msg_discr = ABIS_RSL_MDISC_RLL;
dh->c.msg_type = msg_type;
dh->ie_chan = RSL_IE_CHAN_NR;
dh->ie_link_id = RSL_IE_LINK_IDENT;
}
const struct tlv_definition rsl_att_tlvdef = {
.def = {
[RSL_IE_CHAN_NR] = { TLV_TYPE_TV },
[RSL_IE_LINK_IDENT] = { TLV_TYPE_TV },
[RSL_IE_ACT_TYPE] = { TLV_TYPE_TV },
[RSL_IE_BS_POWER] = { TLV_TYPE_TV },
[RSL_IE_CHAN_IDENT] = { TLV_TYPE_TLV },
[RSL_IE_CHAN_MODE] = { TLV_TYPE_TLV },
[RSL_IE_ENCR_INFO] = { TLV_TYPE_TLV },
[RSL_IE_FRAME_NUMBER] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_HANDO_REF] = { TLV_TYPE_TV },
[RSL_IE_L1_INFO] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_L3_INFO] = { TLV_TYPE_TL16V },
[RSL_IE_MS_IDENTITY] = { TLV_TYPE_TLV },
[RSL_IE_MS_POWER] = { TLV_TYPE_TV },
[RSL_IE_PAGING_GROUP] = { TLV_TYPE_TV },
[RSL_IE_PAGING_LOAD] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_PYHS_CONTEXT] = { TLV_TYPE_TLV },
[RSL_IE_ACCESS_DELAY] = { TLV_TYPE_TV },
[RSL_IE_RACH_LOAD] = { TLV_TYPE_TLV },
[RSL_IE_REQ_REFERENCE] = { TLV_TYPE_FIXED, 3 },
[RSL_IE_RELEASE_MODE] = { TLV_TYPE_TV },
[RSL_IE_RESOURCE_INFO] = { TLV_TYPE_TLV },
[RSL_IE_RLM_CAUSE] = { TLV_TYPE_TLV },
[RSL_IE_STARTNG_TIME] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_TIMING_ADVANCE] = { TLV_TYPE_TV },
[RSL_IE_UPLINK_MEAS] = { TLV_TYPE_TLV },
[RSL_IE_CAUSE] = { TLV_TYPE_TLV },
[RSL_IE_MEAS_RES_NR] = { TLV_TYPE_TV },
[RSL_IE_MSG_ID] = { TLV_TYPE_TV },
[RSL_IE_SYSINFO_TYPE] = { TLV_TYPE_TV },
[RSL_IE_MS_POWER_PARAM] = { TLV_TYPE_TLV },
[RSL_IE_BS_POWER_PARAM] = { TLV_TYPE_TLV },
[RSL_IE_PREPROC_PARAM] = { TLV_TYPE_TLV },
[RSL_IE_PREPROC_MEAS] = { TLV_TYPE_TLV },
[RSL_IE_IMM_ASS_INFO] = { TLV_TYPE_TLV },
[RSL_IE_SMSCB_INFO] = { TLV_TYPE_FIXED, 23 },
[RSL_IE_MS_TIMING_OFFSET] = { TLV_TYPE_TV },
[RSL_IE_ERR_MSG] = { TLV_TYPE_TLV },
[RSL_IE_FULL_BCCH_INFO] = { TLV_TYPE_TLV },
[RSL_IE_CHAN_NEEDED] = { TLV_TYPE_TV },
[RSL_IE_CB_CMD_TYPE] = { TLV_TYPE_TV },
[RSL_IE_SMSCB_MSG] = { TLV_TYPE_TLV },
[RSL_IE_FULL_IMM_ASS_INFO] = { TLV_TYPE_TLV },
[RSL_IE_SACCH_INFO] = { TLV_TYPE_TLV },
[RSL_IE_CBCH_LOAD_INFO] = { TLV_TYPE_TV },
[RSL_IE_SMSCB_CHAN_INDICATOR] = { TLV_TYPE_TV },
[RSL_IE_GROUP_CALL_REF] = { TLV_TYPE_TLV },
[RSL_IE_CHAN_DESC] = { TLV_TYPE_TLV },
[RSL_IE_NCH_DRX_INFO] = { TLV_TYPE_TLV },
[RSL_IE_CMD_INDICATOR] = { TLV_TYPE_TLV },
[RSL_IE_EMLPP_PRIO] = { TLV_TYPE_TV },
[RSL_IE_UIC] = { TLV_TYPE_TLV },
[RSL_IE_MAIN_CHAN_REF] = { TLV_TYPE_TV },
[RSL_IE_MR_CONFIG] = { TLV_TYPE_TLV },
[RSL_IE_MR_CONTROL] = { TLV_TYPE_TV },
[RSL_IE_SUP_CODEC_TYPES] = { TLV_TYPE_TLV },
[RSL_IE_CODEC_CONFIG] = { TLV_TYPE_TLV },
[RSL_IE_RTD] = { TLV_TYPE_TV },
[RSL_IE_TFO_STATUS] = { TLV_TYPE_TV },
[RSL_IE_LLP_APDU] = { TLV_TYPE_TLV },
[RSL_IE_SIEMENS_MRPCI] = { TLV_TYPE_TV },
[RSL_IE_IPAC_PROXY_UDP] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_IPAC_BSCMPL_TOUT] = { TLV_TYPE_TV },
[RSL_IE_IPAC_REMOTE_IP] = { TLV_TYPE_FIXED, 4 },
[RSL_IE_IPAC_REMOTE_PORT] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_IPAC_RTP_PAYLOAD] = { TLV_TYPE_TV },
[RSL_IE_IPAC_LOCAL_PORT] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_IPAC_SPEECH_MODE] = { TLV_TYPE_TV },
[RSL_IE_IPAC_LOCAL_IP] = { TLV_TYPE_FIXED, 4 },
[RSL_IE_IPAC_CONN_ID] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_IPAC_RTP_CSD_FMT] = { TLV_TYPE_TV },
[RSL_IE_IPAC_RTP_JIT_BUF] = { TLV_TYPE_FIXED, 2 },
[RSL_IE_IPAC_RTP_COMPR] = { TLV_TYPE_TV },
[RSL_IE_IPAC_RTP_PAYLOAD2] = { TLV_TYPE_TV },
[RSL_IE_IPAC_RTP_MPLEX] = { TLV_TYPE_FIXED, 8 },
[RSL_IE_IPAC_RTP_MPLEX_ID] = { TLV_TYPE_TV },
},
};
/* encode channel number as per Section 9.3.1 */
uint8_t rsl_enc_chan_nr(uint8_t type, uint8_t subch, uint8_t timeslot)
{
uint8_t ret;
ret = (timeslot & 0x07) | type;
switch (type) {
case RSL_CHAN_Lm_ACCHs:
subch &= 0x01;
break;
case RSL_CHAN_SDCCH4_ACCH:
subch &= 0x07;
break;
case RSL_CHAN_SDCCH8_ACCH:
subch &= 0x07;
break;
default:
/* no subchannels allowed */
subch = 0x00;
break;
}
ret |= (subch << 3);
return ret;
}
/* FIXME: convert to value_string */
static const char *rsl_err_vals[0xff] = {
[RSL_ERR_RADIO_IF_FAIL] = "Radio Interface Failure",
[RSL_ERR_RADIO_LINK_FAIL] = "Radio Link Failure",
[RSL_ERR_HANDOVER_ACC_FAIL] = "Handover Access Failure",
[RSL_ERR_TALKER_ACC_FAIL] = "Talker Access Failure",
[RSL_ERR_OM_INTERVENTION] = "O&M Intervention",
[RSL_ERR_NORMAL_UNSPEC] = "Normal event, unspecified",
[RSL_ERR_T_MSRFPCI_EXP] = "Siemens: T_MSRFPCI Expired",
[RSL_ERR_EQUIPMENT_FAIL] = "Equipment Failure",
[RSL_ERR_RR_UNAVAIL] = "Radio Resource not available",
[RSL_ERR_TERR_CH_FAIL] = "Terrestrial Channel Failure",
[RSL_ERR_CCCH_OVERLOAD] = "CCCH Overload",
[RSL_ERR_ACCH_OVERLOAD] = "ACCH Overload",
[RSL_ERR_PROCESSOR_OVERLOAD] = "Processor Overload",
[RSL_ERR_RES_UNAVAIL] = "Resource not available, unspecified",
[RSL_ERR_TRANSC_UNAVAIL] = "Transcoding not available",
[RSL_ERR_SERV_OPT_UNAVAIL] = "Service or Option not available",
[RSL_ERR_ENCR_UNIMPL] = "Encryption algorithm not implemented",
[RSL_ERR_SERV_OPT_UNIMPL] = "Service or Option not implemented",
[RSL_ERR_RCH_ALR_ACTV_ALLOC] = "Radio channel already activated",
[RSL_ERR_INVALID_MESSAGE] = "Invalid Message, unspecified",
[RSL_ERR_MSG_DISCR] = "Message Discriminator Error",
[RSL_ERR_MSG_TYPE] = "Message Type Error",
[RSL_ERR_MSG_SEQ] = "Message Sequence Error",
[RSL_ERR_IE_ERROR] = "General IE error",
[RSL_ERR_MAND_IE_ERROR] = "Mandatory IE error",
[RSL_ERR_OPT_IE_ERROR] = "Optional IE error",
[RSL_ERR_IE_NONEXIST] = "IE non-existent",
[RSL_ERR_IE_LENGTH] = "IE length error",
[RSL_ERR_IE_CONTENT] = "IE content error",
[RSL_ERR_PROTO] = "Protocol error, unspecified",
[RSL_ERR_INTERWORKING] = "Interworking error, unspecified",
};
const struct value_string rsl_rlm_cause_strs[] = {
{ RLL_CAUSE_T200_EXPIRED, "Timer T200 expired (N200+1) times" },
{ RLL_CAUSE_REEST_REQ, "Re-establishment request" },
{ RLL_CAUSE_UNSOL_UA_RESP, "Unsolicited UA response" },
{ RLL_CAUSE_UNSOL_DM_RESP, "Unsolicited DM response" },
{ RLL_CAUSE_UNSOL_DM_RESP_MF, "Unsolicited DM response, multiple frame" },
{ RLL_CAUSE_UNSOL_SPRV_RESP, "Unsolicited supervisory response" },
{ RLL_CAUSE_SEQ_ERR, "Sequence Error" },
{ RLL_CAUSE_UFRM_INC_PARAM, "U-Frame with incorrect parameters" },
{ RLL_CAUSE_SFRM_INC_PARAM, "S-Frame with incorrect parameters" },
{ RLL_CAUSE_IFRM_INC_MBITS, "I-Frame with incorrect use of M bit" },
{ RLL_CAUSE_IFRM_INC_LEN, "I-Frame with incorrect length" },
{ RLL_CAUSE_FRM_UNIMPL, "Fraeme not implemented" },
{ RLL_CAUSE_SABM_MF, "SABM command, multiple frame established state" },
{ RLL_CAUSE_SABM_INFO_NOTALL, "SABM frame with information not allowed in this state" },
{ 0, NULL },
};
const char *rsl_err_name(uint8_t err)
{
if (rsl_err_vals[err])
return rsl_err_vals[err];
else
return "unknown";
}
/* Section 3.3.2.3 TS 05.02. I think this looks like a table */
int rsl_ccch_conf_to_bs_cc_chans(int ccch_conf)
{
switch (ccch_conf) {
case RSL_BCCH_CCCH_CONF_1_NC:
return 1;
case RSL_BCCH_CCCH_CONF_1_C:
return 1;
case RSL_BCCH_CCCH_CONF_2_NC:
return 2;
case RSL_BCCH_CCCH_CONF_3_NC:
return 3;
case RSL_BCCH_CCCH_CONF_4_NC:
return 4;
default:
return -1;
}
}
/* Section 3.3.2.3 TS 05.02 */
int rsl_ccch_conf_to_bs_ccch_sdcch_comb(int ccch_conf)
{
switch (ccch_conf) {
case RSL_BCCH_CCCH_CONF_1_NC:
return 0;
case RSL_BCCH_CCCH_CONF_1_C:
return 1;
case RSL_BCCH_CCCH_CONF_2_NC:
return 0;
case RSL_BCCH_CCCH_CONF_3_NC:
return 0;
case RSL_BCCH_CCCH_CONF_4_NC:
return 0;
default:
return -1;
}
}
/* Push a RSL RLL header with L3_INFO IE */
int rsl_rll_push_l3(struct msgb *msg, uint8_t msg_type,
uint8_t chan_nr, uint8_t link_id)
{
uint8_t l3_len = msg->tail - (uint8_t *)msgb_l3(msg);
struct abis_rsl_rll_hdr *rh;
/* construct a RSLms RLL message (DATA INDICATION, UNIT DATA
* INDICATION) and send it off via RSLms */
/* Push the L3 IE tag and lengh */
msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len);
/* Then push the RSL header */
rh = (struct abis_rsl_rll_hdr *) msgb_push(msg, sizeof(*rh));
rsl_init_rll_hdr(rh, msg_type);
rh->c.msg_discr |= ABIS_RSL_MDISC_TRANSP;
rh->chan_nr = chan_nr;
rh->link_id = link_id;
/* set the l2 header pointer */
msg->l2h = (uint8_t *)rh;
return 0;
}
struct msgb *rsl_rll_simple(uint8_t msg_type, uint8_t chan_nr,
uint8_t link_id)
{
struct abis_rsl_rll_hdr *rh;
struct msgb *msg = msgb_alloc(sizeof(*rh), "rsl_rll_simple");
if (!msg)
return NULL;
/* put the RSL header */
rh = (struct abis_rsl_rll_hdr *) msgb_put(msg, sizeof(*rh));
rsl_init_rll_hdr(rh, msg_type);
rh->c.msg_discr |= ABIS_RSL_MDISC_TRANSP;
rh->chan_nr = chan_nr;
rh->link_id = link_id;
/* set the l2 header pointer */
msg->l2h = (uint8_t *)rh;
return msg;
}
|
