Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1 | /* GSM Radio Signalling Link messages on the A-bis interface |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2 | * 3GPP TS 08.58 version 8.6.0 Release 1999 / ETSI TS 100 596 V8.6.0 */ |
| 3 | |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 4 | /* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org> |
Holger Hans Peter Freyther | e38af68 | 2011-12-27 22:24:17 +0100 | [diff] [blame] | 5 | * (C) 2012 by Holger Hans Peter Freyther |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 6 | * |
| 7 | * All Rights Reserved |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
Harald Welte | 0e3e88e | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 10 | * it under the terms of the GNU Affero General Public License as published by |
| 11 | * the Free Software Foundation; either version 3 of the License, or |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Harald Welte | 0e3e88e | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 17 | * GNU Affero General Public License for more details. |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 18 | * |
Harald Welte | 0e3e88e | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 19 | * You should have received a copy of the GNU Affero General Public License |
| 20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <stdio.h> |
| 25 | #include <stdlib.h> |
| 26 | #include <errno.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 27 | #include <netinet/in.h> |
| 28 | #include <arpa/inet.h> |
| 29 | |
| 30 | #include <openbsc/gsm_data.h> |
| 31 | #include <openbsc/gsm_04_08.h> |
Pablo Neira Ayuso | dd5fff4 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 32 | #include <osmocom/gsm/gsm_utils.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 33 | #include <openbsc/abis_rsl.h> |
| 34 | #include <openbsc/chan_alloc.h> |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 35 | #include <openbsc/bsc_rll.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 36 | #include <openbsc/debug.h> |
Pablo Neira Ayuso | dd5fff4 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 37 | #include <osmocom/gsm/tlv.h> |
Max | 3d94aca | 2016-05-11 12:45:13 +0200 | [diff] [blame] | 38 | #include <osmocom/gsm/protocol/gsm_04_08.h> |
| 39 | #include <osmocom/gsm/protocol/gsm_08_58.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 40 | #include <openbsc/paging.h> |
| 41 | #include <openbsc/signal.h> |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 42 | #include <openbsc/meas_rep.h> |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 43 | #include <openbsc/rtp_proxy.h> |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame] | 44 | #include <osmocom/abis/e1_input.h> |
Pablo Neira Ayuso | dd5fff4 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 45 | #include <osmocom/gsm/rsl.h> |
Pablo Neira Ayuso | dd5fff4 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 46 | #include <osmocom/core/talloc.h> |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 47 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 48 | #define RSL_ALLOC_SIZE 1024 |
| 49 | #define RSL_ALLOC_HEADROOM 128 |
| 50 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 51 | enum sacch_deact { |
| 52 | SACCH_NONE, |
| 53 | SACCH_DEACTIVATE, |
| 54 | }; |
| 55 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 56 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan); |
Holger Hans Peter Freyther | da9fb8c | 2014-04-06 12:21:05 +0200 | [diff] [blame] | 57 | static void error_timeout_cb(void *data); |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 58 | static int dyn_ts_switchover_continue(struct gsm_bts_trx_ts *ts); |
| 59 | static int dyn_ts_switchover_failed(struct gsm_bts_trx_ts *ts, int rc); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 60 | static void dyn_ts_switchover_complete(struct gsm_lchan *lchan); |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 61 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 62 | static void send_lchan_signal(int sig_no, struct gsm_lchan *lchan, |
| 63 | struct gsm_meas_rep *resp) |
| 64 | { |
| 65 | struct lchan_signal_data sig; |
| 66 | sig.lchan = lchan; |
| 67 | sig.mr = resp; |
Pablo Neira Ayuso | ef717c6 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 68 | osmo_signal_dispatch(SS_LCHAN, sig_no, &sig); |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 69 | } |
| 70 | |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 71 | static void do_lchan_free(struct gsm_lchan *lchan) |
| 72 | { |
Holger Hans Peter Freyther | da9fb8c | 2014-04-06 12:21:05 +0200 | [diff] [blame] | 73 | /* We start the error timer to make the channel available again */ |
| 74 | if (lchan->state == LCHAN_S_REL_ERR) { |
| 75 | lchan->error_timer.data = lchan; |
| 76 | lchan->error_timer.cb = error_timeout_cb; |
| 77 | osmo_timer_schedule(&lchan->error_timer, |
| 78 | lchan->ts->trx->bts->network->T3111 + 2, 0); |
| 79 | } else { |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 80 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | da9fb8c | 2014-04-06 12:21:05 +0200 | [diff] [blame] | 81 | } |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 82 | lchan_free(lchan); |
| 83 | } |
| 84 | |
Alexander Couzens | 4f598fc | 2016-08-23 06:27:19 +0200 | [diff] [blame] | 85 | static void count_codecs(struct gsm_bts *bts, struct gsm_lchan *lchan) |
| 86 | { |
| 87 | OSMO_ASSERT(bts); |
| 88 | |
| 89 | if (lchan->type == GSM_LCHAN_TCH_H) { |
| 90 | switch (lchan->tch_mode) { |
| 91 | case GSM48_CMODE_SPEECH_AMR: |
| 92 | rate_ctr_inc(&bts->network->bsc_ctrs->ctr[BSC_CTR_CODEC_AMR_H]); |
| 93 | break; |
| 94 | case GSM48_CMODE_SPEECH_V1: |
| 95 | rate_ctr_inc(&bts->network->bsc_ctrs->ctr[BSC_CTR_CODEC_V1_HR]); |
| 96 | break; |
| 97 | default: |
| 98 | break; |
| 99 | } |
| 100 | } else if (lchan->type == GSM_LCHAN_TCH_F) { |
| 101 | switch (lchan->tch_mode) { |
| 102 | case GSM48_CMODE_SPEECH_AMR: |
| 103 | rate_ctr_inc(&bts->network->bsc_ctrs->ctr[BSC_CTR_CODEC_AMR_F]); |
| 104 | break; |
| 105 | case GSM48_CMODE_SPEECH_V1: |
| 106 | rate_ctr_inc(&bts->network->bsc_ctrs->ctr[BSC_CTR_CODEC_V1_FR]); |
| 107 | break; |
| 108 | case GSM48_CMODE_SPEECH_EFR: |
| 109 | rate_ctr_inc(&bts->network->bsc_ctrs->ctr[BSC_CTR_CODEC_EFR]); |
| 110 | break; |
| 111 | default: |
| 112 | break; |
| 113 | } |
Alexander Couzens | 4f598fc | 2016-08-23 06:27:19 +0200 | [diff] [blame] | 114 | } |
| 115 | } |
| 116 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 117 | static uint8_t mdisc_by_msgtype(uint8_t msg_type) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 118 | { |
| 119 | /* mask off the transparent bit ? */ |
| 120 | msg_type &= 0xfe; |
| 121 | |
| 122 | if ((msg_type & 0xf0) == 0x00) |
| 123 | return ABIS_RSL_MDISC_RLL; |
| 124 | if ((msg_type & 0xf0) == 0x10) { |
| 125 | if (msg_type >= 0x19 && msg_type <= 0x22) |
| 126 | return ABIS_RSL_MDISC_TRX; |
| 127 | else |
| 128 | return ABIS_RSL_MDISC_COM_CHAN; |
| 129 | } |
| 130 | if ((msg_type & 0xe0) == 0x20) |
| 131 | return ABIS_RSL_MDISC_DED_CHAN; |
| 132 | |
| 133 | return ABIS_RSL_MDISC_LOC; |
| 134 | } |
| 135 | |
| 136 | static inline void init_dchan_hdr(struct abis_rsl_dchan_hdr *dh, |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 137 | uint8_t msg_type) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 138 | { |
| 139 | dh->c.msg_discr = mdisc_by_msgtype(msg_type); |
| 140 | dh->c.msg_type = msg_type; |
| 141 | dh->ie_chan = RSL_IE_CHAN_NR; |
| 142 | } |
| 143 | |
Neels Hofmeyr | 0a77199 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 144 | /* call rsl_lchan_lookup and set the log context */ |
Neels Hofmeyr | 0781eb0 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 145 | static struct gsm_lchan *lchan_lookup(struct gsm_bts_trx *trx, uint8_t chan_nr, |
| 146 | const char *log_name) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 147 | { |
Neels Hofmeyr | 0a77199 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 148 | int rc; |
| 149 | struct gsm_lchan *lchan = rsl_lchan_lookup(trx, chan_nr, &rc); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 150 | |
Neels Hofmeyr | 0a77199 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 151 | if (!lchan) { |
Neels Hofmeyr | 0781eb0 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 152 | LOGP(DRSL, LOGL_ERROR, "%sunknown chan_nr=0x%02x\n", |
| 153 | log_name, chan_nr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 154 | return NULL; |
| 155 | } |
| 156 | |
Neels Hofmeyr | 0a77199 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 157 | if (rc < 0) |
Neels Hofmeyr | 0781eb0 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 158 | LOGP(DRSL, LOGL_ERROR, "%s %smismatching chan_nr=0x%02x\n", |
| 159 | gsm_ts_and_pchan_name(lchan->ts), log_name, chan_nr); |
Neels Hofmeyr | 0a77199 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 160 | |
Holger Hans Peter Freyther | 1a95fa8 | 2010-06-28 15:47:12 +0800 | [diff] [blame] | 161 | if (lchan->conn) |
Neels Hofmeyr | cf0136d | 2017-02-23 18:00:51 +0100 | [diff] [blame^] | 162 | log_set_context(LOG_CTX_VLR_SUBSCR, lchan->conn->subscr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 163 | |
| 164 | return lchan; |
| 165 | } |
| 166 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 167 | /* As per TS 03.03 Section 2.2, the IMSI has 'not more than 15 digits' */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 168 | uint64_t str_to_imsi(const char *imsi_str) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 169 | { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 170 | uint64_t ret; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 171 | |
| 172 | ret = strtoull(imsi_str, NULL, 10); |
| 173 | |
| 174 | return ret; |
| 175 | } |
| 176 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 177 | static struct msgb *rsl_msgb_alloc(void) |
| 178 | { |
Harald Welte | 9cfc935 | 2009-06-26 19:39:35 +0200 | [diff] [blame] | 179 | return msgb_alloc_headroom(RSL_ALLOC_SIZE, RSL_ALLOC_HEADROOM, |
| 180 | "RSL"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 181 | } |
| 182 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 183 | static void pad_macblock(uint8_t *out, const uint8_t *in, int len) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 184 | { |
| 185 | memcpy(out, in, len); |
| 186 | |
Max | 6b23839 | 2017-02-09 19:23:38 +0100 | [diff] [blame] | 187 | if (len < GSM_MACBLOCK_LEN) |
| 188 | memset(out+len, 0x2b, GSM_MACBLOCK_LEN - len); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 189 | } |
| 190 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 191 | /* Chapter 9.3.7: Encryption Information */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 192 | static int build_encr_info(uint8_t *out, struct gsm_lchan *lchan) |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 193 | { |
| 194 | *out++ = lchan->encr.alg_id & 0xff; |
| 195 | if (lchan->encr.key_len) |
| 196 | memcpy(out, lchan->encr.key, lchan->encr.key_len); |
| 197 | return lchan->encr.key_len + 1; |
| 198 | } |
| 199 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 200 | static void print_rsl_cause(int lvl, const uint8_t *cause_v, uint8_t cause_len) |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 201 | { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 202 | int i; |
| 203 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 204 | LOGPC(DRSL, lvl, "CAUSE=0x%02x(%s) ", |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 205 | cause_v[0], rsl_err_name(cause_v[0])); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 206 | for (i = 1; i < cause_len-1; i++) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 207 | LOGPC(DRSL, lvl, "%02x ", cause_v[i]); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 208 | } |
| 209 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 210 | static void lchan_act_tmr_cb(void *data) |
| 211 | { |
| 212 | struct gsm_lchan *lchan = data; |
| 213 | |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 214 | rsl_lchan_mark_broken(lchan, "activation timeout"); |
Daniel Willmann | 2731e73 | 2011-08-11 04:44:12 +0200 | [diff] [blame] | 215 | lchan_free(lchan); |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | static void lchan_deact_tmr_cb(void *data) |
| 219 | { |
| 220 | struct gsm_lchan *lchan = data; |
| 221 | |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 222 | rsl_lchan_mark_broken(lchan, "de-activation timeout"); |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 223 | lchan_free(lchan); |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 227 | /* Send a BCCH_INFO message as per Chapter 8.5.1 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 228 | int rsl_bcch_info(struct gsm_bts_trx *trx, uint8_t type, |
| 229 | const uint8_t *data, int len) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 230 | { |
| 231 | struct abis_rsl_dchan_hdr *dh; |
| 232 | struct msgb *msg = rsl_msgb_alloc(); |
| 233 | |
| 234 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof*dh); |
| 235 | init_dchan_hdr(dh, RSL_MT_BCCH_INFO); |
| 236 | dh->chan_nr = RSL_CHAN_BCCH; |
| 237 | |
Philipp | f8321be | 2016-11-02 12:05:44 +0100 | [diff] [blame] | 238 | if (trx->bts->type == GSM_BTS_TYPE_RBS2000 |
| 239 | && type == RSL_SYSTEM_INFO_13) { |
| 240 | /* Ericsson proprietary encoding of SI13 */ |
| 241 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, RSL_ERIC_SYSTEM_INFO_13); |
| 242 | msgb_tlv_put(msg, RSL_IE_FULL_BCCH_INFO, len, data); |
| 243 | msgb_tv_put(msg, RSL_IE_ERIC_BCCH_MAPPING, 0x00); |
| 244 | } else { |
| 245 | /* Normal encoding */ |
| 246 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 247 | msgb_tlv_put(msg, RSL_IE_FULL_BCCH_INFO, len, data); |
| 248 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 249 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 250 | msg->dst = trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 251 | |
| 252 | return abis_rsl_sendmsg(msg); |
| 253 | } |
| 254 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 255 | int rsl_sacch_filling(struct gsm_bts_trx *trx, uint8_t type, |
| 256 | const uint8_t *data, int len) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 257 | { |
| 258 | struct abis_rsl_common_hdr *ch; |
| 259 | struct msgb *msg = rsl_msgb_alloc(); |
| 260 | |
| 261 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 262 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 263 | ch->msg_type = RSL_MT_SACCH_FILL; |
| 264 | |
| 265 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 266 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
| 267 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 268 | msg->dst = trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 269 | |
| 270 | return abis_rsl_sendmsg(msg); |
| 271 | } |
| 272 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 273 | int rsl_sacch_info_modify(struct gsm_lchan *lchan, uint8_t type, |
| 274 | const uint8_t *data, int len) |
Harald Welte | 10b7d8f | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 275 | { |
| 276 | struct abis_rsl_dchan_hdr *dh; |
| 277 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 278 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 10b7d8f | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 279 | |
| 280 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 281 | init_dchan_hdr(dh, RSL_MT_SACCH_INFO_MODIFY); |
| 282 | dh->chan_nr = chan_nr; |
| 283 | |
| 284 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 285 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
| 286 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 287 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 10b7d8f | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 288 | |
| 289 | return abis_rsl_sendmsg(msg); |
| 290 | } |
| 291 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 292 | int rsl_chan_bs_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int db) |
| 293 | { |
| 294 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 295 | struct msgb *msg; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 296 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 297 | |
| 298 | db = abs(db); |
| 299 | if (db > 30) |
| 300 | return -EINVAL; |
| 301 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 302 | msg = rsl_msgb_alloc(); |
| 303 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 304 | lchan->bs_power = db/2; |
| 305 | if (fpc) |
| 306 | lchan->bs_power |= 0x10; |
| 307 | |
| 308 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 309 | init_dchan_hdr(dh, RSL_MT_BS_POWER_CONTROL); |
| 310 | dh->chan_nr = chan_nr; |
| 311 | |
| 312 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 313 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 314 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 315 | |
| 316 | return abis_rsl_sendmsg(msg); |
| 317 | } |
| 318 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 319 | int rsl_chan_ms_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int dbm) |
| 320 | { |
| 321 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 322 | struct msgb *msg; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 323 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 324 | int ctl_lvl; |
| 325 | |
Harald Welte | c4dcda0 | 2009-08-09 14:45:18 +0200 | [diff] [blame] | 326 | ctl_lvl = ms_pwr_ctl_lvl(lchan->ts->trx->bts->band, dbm); |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 327 | if (ctl_lvl < 0) |
| 328 | return ctl_lvl; |
| 329 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 330 | msg = rsl_msgb_alloc(); |
| 331 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 332 | lchan->ms_power = ctl_lvl; |
| 333 | |
| 334 | if (fpc) |
| 335 | lchan->ms_power |= 0x20; |
| 336 | |
| 337 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 338 | init_dchan_hdr(dh, RSL_MT_MS_POWER_CONTROL); |
| 339 | dh->chan_nr = chan_nr; |
| 340 | |
| 341 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 342 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 343 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 344 | |
| 345 | return abis_rsl_sendmsg(msg); |
| 346 | } |
| 347 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 348 | static int channel_mode_from_lchan(struct rsl_ie_chan_mode *cm, |
| 349 | struct gsm_lchan *lchan) |
| 350 | { |
Holger Hans Peter Freyther | fad7365 | 2013-03-09 17:50:10 +0100 | [diff] [blame] | 351 | memset(cm, 0, sizeof(*cm)); |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 352 | |
| 353 | /* FIXME: what to do with data calls ? */ |
Max | 3d94aca | 2016-05-11 12:45:13 +0200 | [diff] [blame] | 354 | cm->dtx_dtu = 0; |
| 355 | if (lchan->ts->trx->bts->dtxu != GSM48_DTX_SHALL_NOT_BE_USED) |
| 356 | cm->dtx_dtu |= RSL_CMOD_DTXu; |
| 357 | if (lchan->ts->trx->bts->dtxd) |
| 358 | cm->dtx_dtu |= RSL_CMOD_DTXd; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 359 | |
| 360 | /* set TCH Speech/Data */ |
| 361 | cm->spd_ind = lchan->rsl_cmode; |
| 362 | |
Harald Welte | 951e351 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 363 | if (lchan->rsl_cmode == RSL_CMOD_SPD_SIGN && |
| 364 | lchan->tch_mode != GSM48_CMODE_SIGN) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 365 | LOGP(DRSL, LOGL_ERROR, "unsupported: rsl_mode == signalling, " |
Harald Welte | 951e351 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 366 | "but tch_mode != signalling\n"); |
| 367 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 368 | switch (lchan->type) { |
| 369 | case GSM_LCHAN_SDCCH: |
| 370 | cm->chan_rt = RSL_CMOD_CRT_SDCCH; |
| 371 | break; |
| 372 | case GSM_LCHAN_TCH_F: |
| 373 | cm->chan_rt = RSL_CMOD_CRT_TCH_Bm; |
| 374 | break; |
| 375 | case GSM_LCHAN_TCH_H: |
| 376 | cm->chan_rt = RSL_CMOD_CRT_TCH_Lm; |
| 377 | break; |
| 378 | case GSM_LCHAN_NONE: |
| 379 | case GSM_LCHAN_UNKNOWN: |
| 380 | default: |
Neels Hofmeyr | 4e472ba | 2016-07-18 23:47:24 +0200 | [diff] [blame] | 381 | LOGP(DRSL, LOGL_ERROR, |
| 382 | "unsupported activation lchan->type %u %s\n", |
| 383 | lchan->type, gsm_lchant_name(lchan->type)); |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 384 | return -EINVAL; |
| 385 | } |
| 386 | |
| 387 | switch (lchan->tch_mode) { |
| 388 | case GSM48_CMODE_SIGN: |
| 389 | cm->chan_rate = 0; |
| 390 | break; |
| 391 | case GSM48_CMODE_SPEECH_V1: |
| 392 | cm->chan_rate = RSL_CMOD_SP_GSM1; |
| 393 | break; |
| 394 | case GSM48_CMODE_SPEECH_EFR: |
| 395 | cm->chan_rate = RSL_CMOD_SP_GSM2; |
| 396 | break; |
| 397 | case GSM48_CMODE_SPEECH_AMR: |
| 398 | cm->chan_rate = RSL_CMOD_SP_GSM3; |
| 399 | break; |
| 400 | case GSM48_CMODE_DATA_14k5: |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 401 | case GSM48_CMODE_DATA_12k0: |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 402 | case GSM48_CMODE_DATA_6k0: |
Harald Welte | e75a47d | 2012-08-24 15:33:56 +0200 | [diff] [blame] | 403 | switch (lchan->csd_mode) { |
| 404 | case LCHAN_CSD_M_NT: |
| 405 | /* non-transparent CSD with RLP */ |
| 406 | switch (lchan->tch_mode) { |
| 407 | case GSM48_CMODE_DATA_14k5: |
| 408 | cm->chan_rate = RSL_CMOD_SP_NT_14k5; |
| 409 | break; |
| 410 | case GSM48_CMODE_DATA_12k0: |
| 411 | cm->chan_rate = RSL_CMOD_SP_NT_12k0; |
| 412 | break; |
| 413 | case GSM48_CMODE_DATA_6k0: |
| 414 | cm->chan_rate = RSL_CMOD_SP_NT_6k0; |
| 415 | break; |
| 416 | default: |
Neels Hofmeyr | 4e472ba | 2016-07-18 23:47:24 +0200 | [diff] [blame] | 417 | LOGP(DRSL, LOGL_ERROR, |
| 418 | "unsupported lchan->tch_mode %u\n", |
| 419 | lchan->tch_mode); |
Harald Welte | e75a47d | 2012-08-24 15:33:56 +0200 | [diff] [blame] | 420 | return -EINVAL; |
| 421 | } |
| 422 | break; |
| 423 | /* transparent data services below */ |
| 424 | case LCHAN_CSD_M_T_1200_75: |
| 425 | cm->chan_rate = RSL_CMOD_CSD_T_1200_75; |
| 426 | break; |
| 427 | case LCHAN_CSD_M_T_600: |
| 428 | cm->chan_rate = RSL_CMOD_CSD_T_600; |
| 429 | break; |
| 430 | case LCHAN_CSD_M_T_1200: |
| 431 | cm->chan_rate = RSL_CMOD_CSD_T_1200; |
| 432 | break; |
| 433 | case LCHAN_CSD_M_T_2400: |
| 434 | cm->chan_rate = RSL_CMOD_CSD_T_2400; |
| 435 | break; |
| 436 | case LCHAN_CSD_M_T_9600: |
| 437 | cm->chan_rate = RSL_CMOD_CSD_T_9600; |
| 438 | break; |
| 439 | case LCHAN_CSD_M_T_14400: |
| 440 | cm->chan_rate = RSL_CMOD_CSD_T_14400; |
| 441 | break; |
| 442 | case LCHAN_CSD_M_T_29000: |
| 443 | cm->chan_rate = RSL_CMOD_CSD_T_29000; |
| 444 | break; |
| 445 | case LCHAN_CSD_M_T_32000: |
| 446 | cm->chan_rate = RSL_CMOD_CSD_T_32000; |
| 447 | break; |
| 448 | default: |
Neels Hofmeyr | 4e472ba | 2016-07-18 23:47:24 +0200 | [diff] [blame] | 449 | LOGP(DRSL, LOGL_ERROR, |
| 450 | "unsupported lchan->csd_mode %u\n", |
| 451 | lchan->csd_mode); |
Harald Welte | e75a47d | 2012-08-24 15:33:56 +0200 | [diff] [blame] | 452 | return -EINVAL; |
| 453 | } |
Harald Welte | fe14df7 | 2016-11-26 15:16:14 +0100 | [diff] [blame] | 454 | break; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 455 | default: |
Neels Hofmeyr | 4e472ba | 2016-07-18 23:47:24 +0200 | [diff] [blame] | 456 | LOGP(DRSL, LOGL_ERROR, |
| 457 | "unsupported lchan->tch_mode %u\n", |
| 458 | lchan->tch_mode); |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 459 | return -EINVAL; |
| 460 | } |
| 461 | |
| 462 | return 0; |
| 463 | } |
| 464 | |
Holger Hans Peter Freyther | ae27c1b | 2015-08-20 19:32:46 +0200 | [diff] [blame] | 465 | static void mr_config_for_bts(struct gsm_lchan *lchan, struct msgb *msg) |
| 466 | { |
| 467 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) |
| 468 | msgb_tlv_put(msg, RSL_IE_MR_CONFIG, lchan->mr_bts_lv[0], |
| 469 | lchan->mr_bts_lv + 1); |
| 470 | } |
| 471 | |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 472 | static enum gsm_phys_chan_config pchan_for_lchant(enum gsm_chan_t type) |
| 473 | { |
| 474 | switch (type) { |
| 475 | case GSM_LCHAN_TCH_F: |
| 476 | return GSM_PCHAN_TCH_F; |
| 477 | case GSM_LCHAN_TCH_H: |
| 478 | return GSM_PCHAN_TCH_H; |
| 479 | case GSM_LCHAN_NONE: |
| 480 | case GSM_LCHAN_PDTCH: |
| 481 | /* TODO: so far lchan->type is NONE in PDCH mode. PDTCH is only |
| 482 | * used in osmo-bts. Maybe set PDTCH and drop the NONE case |
| 483 | * here. */ |
| 484 | return GSM_PCHAN_PDCH; |
| 485 | default: |
| 486 | return GSM_PCHAN_UNKNOWN; |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | /*! Tx simplified channel activation message for non-standard PDCH type. */ |
| 491 | static int rsl_chan_activate_lchan_as_pdch(struct gsm_lchan *lchan) |
| 492 | { |
| 493 | struct msgb *msg; |
| 494 | struct abis_rsl_dchan_hdr *dh; |
| 495 | |
| 496 | /* This might be called after release of the second lchan of a TCH/H, |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 497 | * but PDCH activation must always happen on the first lchan. Make sure |
| 498 | * the calling code passes the correct lchan. */ |
| 499 | OSMO_ASSERT(lchan == lchan->ts->lchan); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 500 | |
| 501 | rsl_lchan_set_state(lchan, LCHAN_S_ACT_REQ); |
| 502 | |
| 503 | msg = rsl_msgb_alloc(); |
| 504 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 505 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 506 | dh->chan_nr = gsm_lchan_as_pchan2chan_nr(lchan, GSM_PCHAN_PDCH); |
| 507 | |
| 508 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, RSL_ACT_OSMO_PDCH); |
| 509 | |
| 510 | msg->dst = lchan->ts->trx->rsl_link; |
| 511 | |
| 512 | return abis_rsl_sendmsg(msg); |
| 513 | } |
| 514 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 515 | /* Chapter 8.4.1 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 516 | int rsl_chan_activate_lchan(struct gsm_lchan *lchan, uint8_t act_type, |
Andreas Eversberg | 3ca9af3 | 2013-10-11 12:55:35 +0200 | [diff] [blame] | 517 | uint8_t ho_ref) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 518 | { |
| 519 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 520 | struct msgb *msg; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 521 | int rc; |
Harald Welte | dea24e9 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 522 | uint8_t *len; |
Andreas Eversberg | 3ca9af3 | 2013-10-11 12:55:35 +0200 | [diff] [blame] | 523 | uint8_t ta; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 524 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 525 | struct rsl_ie_chan_mode cm; |
laforge | f723cf0 | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 526 | struct gsm48_chan_desc cd; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 527 | |
Neels Hofmeyr | b3985cf | 2016-07-14 02:51:13 +0200 | [diff] [blame] | 528 | /* If a TCH_F/PDCH TS is in PDCH mode, deactivate PDCH first. */ |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 529 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_PDCH |
Neels Hofmeyr | 5a3c23c | 2016-06-14 14:08:35 +0200 | [diff] [blame] | 530 | && (lchan->ts->flags & TS_F_PDCH_ACTIVE)) { |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 531 | /* store activation type and handover reference */ |
Neels Hofmeyr | 3c0df95 | 2016-07-23 21:00:51 +0200 | [diff] [blame] | 532 | lchan->dyn.act_type = act_type; |
| 533 | lchan->dyn.ho_ref = ho_ref; |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 534 | return rsl_ipacc_pdch_activate(lchan->ts, 0); |
| 535 | } |
| 536 | |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 537 | /* |
| 538 | * If necessary, release PDCH on dynamic TS. Note that sending a |
| 539 | * release here is only necessary when in PDCH mode; for TCH types, an |
| 540 | * RSL RF Chan Release is initiated by the BTS when a voice call ends, |
| 541 | * so when we reach this, it will already be released. If a dyn TS is |
| 542 | * in PDCH mode, it is still active and we need to initiate a release |
| 543 | * from the BSC side here. |
| 544 | * |
| 545 | * If pchan_is != pchan_want, the PDCH has already been taken down and |
| 546 | * the switchover now needs to enable the TCH lchan. |
| 547 | * |
| 548 | * To switch a dyn TS between TCH/H and TCH/F, it is sufficient to send |
| 549 | * a chan activ with the new lchan type, because it will already be |
| 550 | * released. |
| 551 | */ |
| 552 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH |
| 553 | && lchan->ts->dyn.pchan_is == GSM_PCHAN_PDCH |
| 554 | && lchan->ts->dyn.pchan_is == lchan->ts->dyn.pchan_want) { |
| 555 | enum gsm_phys_chan_config pchan_want; |
| 556 | pchan_want = pchan_for_lchant(lchan->type); |
| 557 | if (lchan->ts->dyn.pchan_is != pchan_want) { |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 558 | /* |
| 559 | * Make sure to record on lchan[0] so that we'll find |
| 560 | * it after the PDCH release. |
| 561 | */ |
| 562 | struct gsm_lchan *lchan0 = lchan->ts->lchan; |
| 563 | lchan0->dyn.act_type = act_type, |
| 564 | lchan0->dyn.ho_ref = ho_ref; |
| 565 | lchan0->dyn.rqd_ref = lchan->rqd_ref; |
| 566 | lchan0->dyn.rqd_ta = lchan->rqd_ta; |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 567 | lchan->rqd_ref = NULL; |
| 568 | lchan->rqd_ta = 0; |
| 569 | DEBUGP(DRSL, "%s saved rqd_ref=%p ta=%u\n", |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 570 | gsm_lchan_name(lchan0), lchan0->rqd_ref, |
| 571 | lchan0->rqd_ta); |
| 572 | return dyn_ts_switchover_start(lchan->ts, pchan_want); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 573 | } |
| 574 | } |
| 575 | |
| 576 | DEBUGP(DRSL, "%s Tx RSL Channel Activate with act_type=%s\n", |
| 577 | gsm_ts_and_pchan_name(lchan->ts), |
| 578 | rsl_act_type_name(act_type)); |
| 579 | |
| 580 | if (act_type == RSL_ACT_OSMO_PDCH) { |
| 581 | if (lchan->ts->pchan != GSM_PCHAN_TCH_F_TCH_H_PDCH) { |
| 582 | LOGP(DRSL, LOGL_ERROR, |
| 583 | "%s PDCH channel activation only allowed on %s\n", |
| 584 | gsm_ts_and_pchan_name(lchan->ts), |
| 585 | gsm_pchan_name(GSM_PCHAN_TCH_F_TCH_H_PDCH)); |
| 586 | return -EINVAL; |
| 587 | } |
| 588 | return rsl_chan_activate_lchan_as_pdch(lchan); |
| 589 | } |
| 590 | |
| 591 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH |
| 592 | && lchan->ts->dyn.pchan_want == GSM_PCHAN_PDCH) { |
| 593 | LOGP(DRSL, LOGL_ERROR, |
| 594 | "%s Expected PDCH activation kind\n", |
| 595 | gsm_ts_and_pchan_name(lchan->ts)); |
| 596 | return -EINVAL; |
| 597 | } |
| 598 | |
Neels Hofmeyr | 89231d2 | 2016-07-23 19:49:58 +0200 | [diff] [blame] | 599 | rc = channel_mode_from_lchan(&cm, lchan); |
| 600 | if (rc < 0) { |
| 601 | LOGP(DRSL, LOGL_ERROR, |
| 602 | "%s Cannot find channel mode from lchan type\n", |
| 603 | gsm_ts_and_pchan_name(lchan->ts)); |
| 604 | return rc; |
| 605 | } |
| 606 | |
Neels Hofmeyr | 10b0f1d | 2016-06-14 13:12:00 +0200 | [diff] [blame] | 607 | rsl_lchan_set_state(lchan, LCHAN_S_ACT_REQ); |
| 608 | |
Andreas Eversberg | 3ca9af3 | 2013-10-11 12:55:35 +0200 | [diff] [blame] | 609 | ta = lchan->rqd_ta; |
| 610 | |
| 611 | /* BS11 requires TA shifted by 2 bits */ |
| 612 | if (lchan->ts->trx->bts->type == GSM_BTS_TYPE_BS11) |
| 613 | ta <<= 2; |
| 614 | |
Holger Hans Peter Freyther | 11b0140 | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 615 | memset(&cd, 0, sizeof(cd)); |
laforge | f723cf0 | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 616 | gsm48_lchan2chan_desc(&cd, lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 617 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 618 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 619 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 620 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
Neels Hofmeyr | e88e535 | 2016-07-23 19:51:09 +0200 | [diff] [blame] | 621 | |
| 622 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH) |
| 623 | dh->chan_nr = gsm_lchan_as_pchan2chan_nr( |
| 624 | lchan, lchan->ts->dyn.pchan_want); |
| 625 | else |
| 626 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 627 | |
| 628 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 629 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 630 | (uint8_t *) &cm); |
Holger Hans Peter Freyther | 11b0140 | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 631 | |
| 632 | /* |
| 633 | * The Channel Identification is needed for Phase1 phones |
| 634 | * and it contains the GSM48 Channel Description and the |
| 635 | * Mobile Allocation. The GSM 08.58 asks for the Mobile |
| 636 | * Allocation to have a length of zero. We are using the |
| 637 | * msgb_l3len to calculate the length of both messages. |
| 638 | */ |
laforge | f723cf0 | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 639 | msgb_v_put(msg, RSL_IE_CHAN_IDENT); |
Harald Welte | dea24e9 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 640 | len = msgb_put(msg, 1); |
Dieter Spaar | 18a55f6 | 2011-07-27 23:40:33 +0200 | [diff] [blame] | 641 | msgb_tv_fixed_put(msg, GSM48_IE_CHANDESC_2, sizeof(cd), (const uint8_t *) &cd); |
Holger Hans Peter Freyther | 4cab442 | 2010-06-30 12:06:20 +0800 | [diff] [blame] | 642 | |
| 643 | if (lchan->ts->hopping.enabled) |
| 644 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, lchan->ts->hopping.ma_len, |
| 645 | lchan->ts->hopping.ma_data); |
| 646 | else |
| 647 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, 0, NULL); |
Holger Hans Peter Freyther | 11b0140 | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 648 | |
| 649 | /* update the calculated size */ |
| 650 | msg->l3h = len + 1; |
| 651 | *len = msgb_l3len(msg); |
| 652 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 653 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 654 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 655 | rc = build_encr_info(encr_info, lchan); |
| 656 | if (rc > 0) |
| 657 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 658 | } |
| 659 | |
Harald Welte | b90d7bd | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 660 | switch (act_type) { |
| 661 | case RSL_ACT_INTER_ASYNC: |
| 662 | case RSL_ACT_INTER_SYNC: |
| 663 | msgb_tv_put(msg, RSL_IE_HANDO_REF, ho_ref); |
| 664 | break; |
| 665 | default: |
| 666 | break; |
| 667 | } |
| 668 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 669 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 670 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 671 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
Holger Hans Peter Freyther | ae27c1b | 2015-08-20 19:32:46 +0200 | [diff] [blame] | 672 | mr_config_for_bts(lchan, msg); |
Holger Hans Peter Freyther | 6fe8ab9 | 2010-01-28 04:45:05 +0100 | [diff] [blame] | 673 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 674 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 675 | |
| 676 | return abis_rsl_sendmsg(msg); |
| 677 | } |
| 678 | |
Harald Welte | 8e77049 | 2009-07-29 11:38:15 +0200 | [diff] [blame] | 679 | /* Chapter 8.4.9: Modify channel mode on BTS side */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 680 | int rsl_chan_mode_modify_req(struct gsm_lchan *lchan) |
| 681 | { |
| 682 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 683 | struct msgb *msg; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 684 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 685 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 686 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 687 | struct rsl_ie_chan_mode cm; |
| 688 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 689 | rc = channel_mode_from_lchan(&cm, lchan); |
| 690 | if (rc < 0) |
| 691 | return rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 692 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 693 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 694 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 695 | init_dchan_hdr(dh, RSL_MT_MODE_MODIFY_REQ); |
| 696 | dh->chan_nr = chan_nr; |
| 697 | |
| 698 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 699 | (uint8_t *) &cm); |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 700 | |
| 701 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 702 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 703 | rc = build_encr_info(encr_info, lchan); |
| 704 | if (rc > 0) |
| 705 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 706 | } |
| 707 | |
Holger Hans Peter Freyther | ae27c1b | 2015-08-20 19:32:46 +0200 | [diff] [blame] | 708 | mr_config_for_bts(lchan, msg); |
Holger Hans Peter Freyther | 3cce58f | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 709 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 710 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 711 | |
| 712 | return abis_rsl_sendmsg(msg); |
| 713 | } |
| 714 | |
| 715 | /* Chapter 8.4.6: Send the encryption command with given L3 info */ |
| 716 | int rsl_encryption_cmd(struct msgb *msg) |
| 717 | { |
| 718 | struct abis_rsl_dchan_hdr *dh; |
| 719 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 720 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 721 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
| 722 | uint8_t l3_len = msg->len; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 723 | int rc; |
| 724 | |
| 725 | /* First push the L3 IE tag and length */ |
| 726 | msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len); |
| 727 | |
| 728 | /* then the link identifier (SAPI0, main sign link) */ |
| 729 | msgb_tv_push(msg, RSL_IE_LINK_IDENT, 0); |
| 730 | |
| 731 | /* then encryption information */ |
| 732 | rc = build_encr_info(encr_info, lchan); |
| 733 | if (rc <= 0) |
| 734 | return rc; |
| 735 | msgb_tlv_push(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 736 | |
| 737 | /* and finally the DCHAN header */ |
| 738 | dh = (struct abis_rsl_dchan_hdr *) msgb_push(msg, sizeof(*dh)); |
| 739 | init_dchan_hdr(dh, RSL_MT_ENCR_CMD); |
| 740 | dh->chan_nr = chan_nr; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 741 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 742 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 743 | |
| 744 | return abis_rsl_sendmsg(msg); |
| 745 | } |
| 746 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 747 | /* Chapter 8.4.5 / 4.6: Deactivate the SACCH after 04.08 RR CHAN RELEASE */ |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 748 | int rsl_deact_sacch(struct gsm_lchan *lchan) |
| 749 | { |
| 750 | struct abis_rsl_dchan_hdr *dh; |
| 751 | struct msgb *msg = rsl_msgb_alloc(); |
| 752 | |
| 753 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 754 | init_dchan_hdr(dh, RSL_MT_DEACTIVATE_SACCH); |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 755 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 756 | |
| 757 | msg->lchan = lchan; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 758 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 759 | |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 760 | DEBUGP(DRSL, "%s DEACTivate SACCH CMD\n", gsm_lchan_name(lchan)); |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 761 | |
| 762 | return abis_rsl_sendmsg(msg); |
| 763 | } |
| 764 | |
Neels Hofmeyr | 4c13663 | 2016-08-24 14:44:11 +0200 | [diff] [blame] | 765 | static bool dyn_ts_should_switch_to_pdch(struct gsm_bts_trx_ts *ts) |
| 766 | { |
| 767 | int ss; |
| 768 | |
| 769 | if (ts->pchan != GSM_PCHAN_TCH_F_TCH_H_PDCH) |
| 770 | return false; |
| 771 | |
| 772 | if (ts->trx->bts->gprs.mode == BTS_GPRS_NONE) |
| 773 | return false; |
| 774 | |
| 775 | /* Already in PDCH mode? */ |
| 776 | if (ts->dyn.pchan_is == GSM_PCHAN_PDCH) |
| 777 | return false; |
| 778 | |
| 779 | /* See if all lchans are released. */ |
| 780 | for (ss = 0; ss < ts_subslots(ts); ss++) { |
| 781 | struct gsm_lchan *lc = &ts->lchan[ss]; |
| 782 | if (lc->state != LCHAN_S_NONE) { |
Neels Hofmeyr | 7445cf1 | 2016-08-24 14:48:39 +0200 | [diff] [blame] | 783 | DEBUGP(DRSL, "%s lchan %u still in use" |
| 784 | " (type=%s,state=%s)\n", |
| 785 | gsm_ts_and_pchan_name(ts), lc->nr, |
| 786 | gsm_lchant_name(lc->type), |
| 787 | gsm_lchans_name(lc->state)); |
Neels Hofmeyr | 4c13663 | 2016-08-24 14:44:11 +0200 | [diff] [blame] | 788 | /* An lchan is still used. */ |
| 789 | return false; |
| 790 | } |
| 791 | } |
| 792 | |
| 793 | /* All channels are released, go to PDCH mode. */ |
| 794 | DEBUGP(DRSL, "%s back to PDCH\n", |
| 795 | gsm_ts_and_pchan_name(ts)); |
| 796 | return true; |
| 797 | } |
| 798 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 799 | static void error_timeout_cb(void *data) |
| 800 | { |
| 801 | struct gsm_lchan *lchan = data; |
| 802 | if (lchan->state != LCHAN_S_REL_ERR) { |
| 803 | LOGP(DRSL, LOGL_ERROR, "%s error timeout but not in error state: %d\n", |
| 804 | gsm_lchan_name(lchan), lchan->state); |
| 805 | return; |
| 806 | } |
| 807 | |
| 808 | /* go back to the none state */ |
Harald Welte | fddaba5 | 2012-11-13 04:26:22 +0100 | [diff] [blame] | 809 | LOGP(DRSL, LOGL_INFO, "%s is back in operation.\n", gsm_lchan_name(lchan)); |
Holger Hans Peter Freyther | 456fb9d | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 810 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
Neels Hofmeyr | ff1d734 | 2016-06-21 20:55:14 +0200 | [diff] [blame] | 811 | |
Neels Hofmeyr | 31b2630 | 2016-07-06 14:39:04 +0200 | [diff] [blame] | 812 | /* Put PDCH channel back into PDCH mode, if GPRS is enabled */ |
| 813 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_PDCH |
| 814 | && lchan->ts->trx->bts->gprs.mode != BTS_GPRS_NONE) |
Neels Hofmeyr | ff1d734 | 2016-06-21 20:55:14 +0200 | [diff] [blame] | 815 | rsl_ipacc_pdch_activate(lchan->ts, 1); |
Neels Hofmeyr | 982f0ea | 2016-08-24 14:45:44 +0200 | [diff] [blame] | 816 | |
| 817 | if (dyn_ts_should_switch_to_pdch(lchan->ts)) |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 818 | dyn_ts_switchover_start(lchan->ts, GSM_PCHAN_PDCH); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 819 | } |
| 820 | |
Harald Welte | 08011e2 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 821 | static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan); |
| 822 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 823 | /* Chapter 8.4.14 / 4.7: Tell BTS to release the radio channel */ |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 824 | static int rsl_rf_chan_release(struct gsm_lchan *lchan, int error, |
| 825 | enum sacch_deact deact_sacch) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 826 | { |
| 827 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 828 | struct msgb *msg; |
Harald Welte | 08011e2 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 829 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 830 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 831 | /* Stop timers that should lead to a channel release */ |
| 832 | osmo_timer_del(&lchan->T3109); |
| 833 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 834 | if (lchan->state == LCHAN_S_REL_ERR) { |
Neels Hofmeyr | f0b8e8b | 2016-08-24 17:02:19 +0200 | [diff] [blame] | 835 | LOGP(DRSL, LOGL_NOTICE, "%s is in error state, not sending release.\n", |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 836 | gsm_lchan_name(lchan)); |
| 837 | return -1; |
| 838 | } |
| 839 | |
| 840 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 841 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 842 | init_dchan_hdr(dh, RSL_MT_RF_CHAN_REL); |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 843 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 844 | |
| 845 | msg->lchan = lchan; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 846 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 847 | |
Neels Hofmeyr | d9b6b5d | 2016-08-22 18:40:07 +0200 | [diff] [blame] | 848 | if (error) |
| 849 | DEBUGP(DRSL, "%s RF Channel Release due to error: %d\n", |
| 850 | gsm_lchan_name(lchan), error); |
| 851 | else |
| 852 | DEBUGP(DRSL, "%s RF Channel Release\n", gsm_lchan_name(lchan)); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 853 | |
| 854 | if (error) { |
Holger Hans Peter Freyther | 701a647 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 855 | /* |
| 856 | * FIXME: GSM 04.08 gives us two options for the abnormal |
| 857 | * chanel release. This can be either like in the non-existent |
| 858 | * sub-lcuase 3.5.1 or for the main signalling link deactivate |
| 859 | * the SACCH, start timer T3109 and consider the channel as |
| 860 | * released. |
| 861 | * |
| 862 | * This code is doing the later for all raido links and not |
| 863 | * only the main link. Right now all SAPIs are released on the |
| 864 | * local end, the SACCH will be de-activated and right now the |
| 865 | * T3111 will be started. First T3109 should be started and then |
| 866 | * the T3111. |
| 867 | * |
| 868 | * TODO: Move this out of the function. |
| 869 | */ |
| 870 | |
| 871 | /* |
| 872 | * sacch de-activate and "local end release" |
| 873 | */ |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 874 | if (deact_sacch == SACCH_DEACTIVATE) |
| 875 | rsl_deact_sacch(lchan); |
Holger Hans Peter Freyther | 701a647 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 876 | rsl_release_sapis_from(lchan, 0, RSL_REL_LOCAL_END); |
| 877 | |
| 878 | /* |
| 879 | * TODO: start T3109 now. |
| 880 | */ |
Holger Hans Peter Freyther | 456fb9d | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 881 | rsl_lchan_set_state(lchan, LCHAN_S_REL_ERR); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 882 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 883 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 884 | /* Start another timer or assume the BTS sends a ACK/NACK? */ |
| 885 | lchan->act_timer.cb = lchan_deact_tmr_cb; |
| 886 | lchan->act_timer.data = lchan; |
| 887 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 888 | |
Harald Welte | 08011e2 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 889 | rc = abis_rsl_sendmsg(msg); |
| 890 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 891 | /* BTS will respond by RF CHAN REL ACK */ |
Harald Welte | 08011e2 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 892 | return rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 893 | } |
| 894 | |
Holger Hans Peter Freyther | 29eb19b | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 895 | /* |
| 896 | * Special handling for channel releases in the error case. |
| 897 | */ |
| 898 | static int rsl_rf_chan_release_err(struct gsm_lchan *lchan) |
| 899 | { |
Neels Hofmeyr | e062d44 | 2016-10-17 01:03:53 +0200 | [diff] [blame] | 900 | enum sacch_deact sacch_deact; |
Holger Hans Peter Freyther | 29eb19b | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 901 | if (lchan->state != LCHAN_S_ACTIVE) |
| 902 | return 0; |
Neels Hofmeyr | e062d44 | 2016-10-17 01:03:53 +0200 | [diff] [blame] | 903 | switch (ts_pchan(lchan->ts)) { |
| 904 | case GSM_PCHAN_TCH_F: |
| 905 | case GSM_PCHAN_TCH_H: |
| 906 | case GSM_PCHAN_CCCH_SDCCH4: |
| 907 | case GSM_PCHAN_CCCH_SDCCH4_CBCH: |
| 908 | case GSM_PCHAN_SDCCH8_SACCH8C: |
| 909 | case GSM_PCHAN_SDCCH8_SACCH8C_CBCH: |
| 910 | sacch_deact = SACCH_DEACTIVATE; |
| 911 | break; |
| 912 | default: |
| 913 | sacch_deact = SACCH_NONE; |
| 914 | break; |
| 915 | } |
| 916 | return rsl_rf_chan_release(lchan, 1, sacch_deact); |
Holger Hans Peter Freyther | 29eb19b | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 917 | } |
| 918 | |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 919 | static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan) |
| 920 | { |
Neels Hofmeyr | aff130f | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 921 | struct gsm_bts_trx_ts *ts = lchan->ts; |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 922 | |
| 923 | DEBUGP(DRSL, "%s RF CHANNEL RELEASE ACK\n", gsm_lchan_name(lchan)); |
| 924 | |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 925 | /* Stop all pending timers */ |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 926 | osmo_timer_del(&lchan->act_timer); |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 927 | osmo_timer_del(&lchan->T3111); |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 928 | |
Holger Hans Peter Freyther | 6f8ae69 | 2015-04-04 19:35:22 +0200 | [diff] [blame] | 929 | /* |
| 930 | * The BTS didn't respond within the timeout to our channel |
| 931 | * release request and we have marked the channel as broken. |
| 932 | * Now we do receive an ACK and let's be conservative. If it |
| 933 | * is a sysmoBTS we know that only one RF Channel Release ACK |
| 934 | * will be sent. So let's "repair" the channel. |
| 935 | */ |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 936 | if (lchan->state == LCHAN_S_BROKEN) { |
Neels Hofmeyr | aff130f | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 937 | int do_free = is_sysmobts_v2(ts->trx->bts); |
Holger Hans Peter Freyther | 6f8ae69 | 2015-04-04 19:35:22 +0200 | [diff] [blame] | 938 | LOGP(DRSL, LOGL_NOTICE, |
| 939 | "%s CHAN REL ACK for broken channel. %s.\n", |
| 940 | gsm_lchan_name(lchan), |
| 941 | do_free ? "Releasing it" : "Keeping it broken"); |
| 942 | if (do_free) |
| 943 | do_lchan_free(lchan); |
Neels Hofmeyr | a843076 | 2016-08-24 17:02:37 +0200 | [diff] [blame] | 944 | if (dyn_ts_should_switch_to_pdch(lchan->ts)) |
| 945 | dyn_ts_switchover_start(lchan->ts, GSM_PCHAN_PDCH); |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 946 | return 0; |
| 947 | } |
| 948 | |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 949 | if (lchan->state != LCHAN_S_REL_REQ && lchan->state != LCHAN_S_REL_ERR) |
| 950 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN REL ACK but state %s\n", |
| 951 | gsm_lchan_name(lchan), |
| 952 | gsm_lchans_name(lchan->state)); |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 953 | |
Neels Hofmeyr | 10b0f1d | 2016-06-14 13:12:00 +0200 | [diff] [blame] | 954 | do_lchan_free(lchan); |
| 955 | |
Neels Hofmeyr | 01cb40d | 2016-06-23 22:44:20 +0200 | [diff] [blame] | 956 | /* |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 957 | * Check Osmocom RSL CHAN ACT style dynamic TCH/F_TCH/H_PDCH TS for pending |
| 958 | * transitions in these cases: |
| 959 | * |
| 960 | * a) after PDCH was released due to switchover request, activate TCH. |
| 961 | * BSC initiated this switchover, so dyn.pchan_is != pchan_want and |
| 962 | * lchan->type has been set to the desired GSM_LCHAN_*. |
| 963 | * |
| 964 | * b) Voice call ended and a TCH is released. If the TS is now unused, |
| 965 | * switch to PDCH. Here still dyn.pchan_is == dyn.pchan_want because |
| 966 | * we're only just notified and may decide to switch to PDCH now. |
| 967 | */ |
| 968 | if (ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH) { |
| 969 | DEBUGP(DRSL, "%s Rx RSL Channel Release ack for lchan %u\n", |
| 970 | gsm_ts_and_pchan_name(ts), lchan->nr); |
| 971 | |
| 972 | /* (a) */ |
| 973 | if (ts->dyn.pchan_is != ts->dyn.pchan_want) |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 974 | return dyn_ts_switchover_continue(ts); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 975 | |
| 976 | /* (b) */ |
Neels Hofmeyr | 4c13663 | 2016-08-24 14:44:11 +0200 | [diff] [blame] | 977 | if (dyn_ts_should_switch_to_pdch(ts)) |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 978 | return dyn_ts_switchover_start(ts, GSM_PCHAN_PDCH); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 979 | } |
| 980 | |
| 981 | /* |
Neels Hofmeyr | 01cb40d | 2016-06-23 22:44:20 +0200 | [diff] [blame] | 982 | * Put a dynamic TCH/F_PDCH channel back to PDCH mode iff it was |
| 983 | * released successfully. If in error, the PDCH ACT will follow after |
| 984 | * T3111 in error_timeout_cb(). |
| 985 | * |
| 986 | * Any state other than LCHAN_S_REL_ERR became LCHAN_S_NONE after above |
| 987 | * do_lchan_free(). Assert this, because that's what ensures a PDCH ACT |
Neels Hofmeyr | b3985cf | 2016-07-14 02:51:13 +0200 | [diff] [blame] | 988 | * on a TCH/F_PDCH TS in all cases. |
Neels Hofmeyr | 31b2630 | 2016-07-06 14:39:04 +0200 | [diff] [blame] | 989 | * |
| 990 | * If GPRS is disabled, always skip the PDCH ACT. |
Neels Hofmeyr | 01cb40d | 2016-06-23 22:44:20 +0200 | [diff] [blame] | 991 | */ |
| 992 | OSMO_ASSERT(lchan->state == LCHAN_S_NONE |
| 993 | || lchan->state == LCHAN_S_REL_ERR); |
Neels Hofmeyr | aff130f | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 994 | if (ts->trx->bts->gprs.mode == BTS_GPRS_NONE) |
Neels Hofmeyr | 31b2630 | 2016-07-06 14:39:04 +0200 | [diff] [blame] | 995 | return 0; |
Neels Hofmeyr | aff130f | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 996 | if (ts->pchan == GSM_PCHAN_TCH_F_PDCH |
Neels Hofmeyr | ff1d734 | 2016-06-21 20:55:14 +0200 | [diff] [blame] | 997 | && lchan->state == LCHAN_S_NONE) |
Neels Hofmeyr | aff130f | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 998 | return rsl_ipacc_pdch_activate(ts, 1); |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 999 | return 0; |
| 1000 | } |
| 1001 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1002 | int rsl_paging_cmd(struct gsm_bts *bts, uint8_t paging_group, uint8_t len, |
| 1003 | uint8_t *ms_ident, uint8_t chan_needed) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1004 | { |
| 1005 | struct abis_rsl_dchan_hdr *dh; |
| 1006 | struct msgb *msg = rsl_msgb_alloc(); |
| 1007 | |
| 1008 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 1009 | init_dchan_hdr(dh, RSL_MT_PAGING_CMD); |
| 1010 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 1011 | |
| 1012 | msgb_tv_put(msg, RSL_IE_PAGING_GROUP, paging_group); |
| 1013 | msgb_tlv_put(msg, RSL_IE_MS_IDENTITY, len-2, ms_ident+2); |
| 1014 | msgb_tv_put(msg, RSL_IE_CHAN_NEEDED, chan_needed); |
| 1015 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1016 | msg->dst = bts->c0->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1017 | |
| 1018 | return abis_rsl_sendmsg(msg); |
| 1019 | } |
| 1020 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1021 | int imsi_str2bcd(uint8_t *bcd_out, const char *str_in) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1022 | { |
| 1023 | int i, len = strlen(str_in); |
| 1024 | |
| 1025 | for (i = 0; i < len; i++) { |
| 1026 | int num = str_in[i] - 0x30; |
| 1027 | if (num < 0 || num > 9) |
| 1028 | return -1; |
| 1029 | if (i % 2 == 0) |
| 1030 | bcd_out[i/2] = num; |
| 1031 | else |
| 1032 | bcd_out[i/2] |= (num << 4); |
| 1033 | } |
| 1034 | |
| 1035 | return 0; |
| 1036 | } |
| 1037 | |
| 1038 | /* Chapter 8.5.6 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1039 | int rsl_imm_assign_cmd(struct gsm_bts *bts, uint8_t len, uint8_t *val) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1040 | { |
| 1041 | struct msgb *msg = rsl_msgb_alloc(); |
| 1042 | struct abis_rsl_dchan_hdr *dh; |
Max | 6b23839 | 2017-02-09 19:23:38 +0100 | [diff] [blame] | 1043 | uint8_t buf[GSM_MACBLOCK_LEN]; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1044 | |
| 1045 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 1046 | init_dchan_hdr(dh, RSL_MT_IMMEDIATE_ASSIGN_CMD); |
| 1047 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 1048 | |
| 1049 | switch (bts->type) { |
| 1050 | case GSM_BTS_TYPE_BS11: |
| 1051 | msgb_tlv_put(msg, RSL_IE_IMM_ASS_INFO, len, val); |
| 1052 | break; |
| 1053 | default: |
| 1054 | /* If phase 2, construct a FULL_IMM_ASS_INFO */ |
| 1055 | pad_macblock(buf, val, len); |
Max | 6b23839 | 2017-02-09 19:23:38 +0100 | [diff] [blame] | 1056 | msgb_tlv_put(msg, RSL_IE_FULL_IMM_ASS_INFO, GSM_MACBLOCK_LEN, |
| 1057 | buf); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1058 | break; |
| 1059 | } |
| 1060 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1061 | msg->dst = bts->c0->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1062 | |
| 1063 | return abis_rsl_sendmsg(msg); |
| 1064 | } |
| 1065 | |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 1066 | /* Send Siemens specific MS RF Power Capability Indication */ |
Harald Welte | 1209075 | 2009-08-10 10:07:33 +0200 | [diff] [blame] | 1067 | int rsl_siemens_mrpci(struct gsm_lchan *lchan, struct rsl_mrpci *mrpci) |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 1068 | { |
| 1069 | struct msgb *msg = rsl_msgb_alloc(); |
| 1070 | struct abis_rsl_dchan_hdr *dh; |
| 1071 | |
| 1072 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 1073 | init_dchan_hdr(dh, RSL_MT_SIEMENS_MRPCI); |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 1074 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1075 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1076 | msgb_tv_put(msg, RSL_IE_SIEMENS_MRPCI, *(uint8_t *)mrpci); |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 1077 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1078 | DEBUGP(DRSL, "%s TX Siemens MRPCI 0x%02x\n", |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1079 | gsm_lchan_name(lchan), *(uint8_t *)mrpci); |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 1080 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1081 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 1082 | |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 1083 | return abis_rsl_sendmsg(msg); |
| 1084 | } |
| 1085 | |
| 1086 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1087 | /* Send "DATA REQUEST" message with given L3 Info payload */ |
| 1088 | /* Chapter 8.3.1 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1089 | int rsl_data_request(struct msgb *msg, uint8_t link_id) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1090 | { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1091 | if (msg->lchan == NULL) { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1092 | LOGP(DRSL, LOGL_ERROR, "cannot send DATA REQUEST to unknown lchan\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1093 | return -EINVAL; |
| 1094 | } |
| 1095 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1096 | rsl_rll_push_l3(msg, RSL_MT_DATA_REQ, gsm_lchan2chan_nr(msg->lchan), |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1097 | link_id, 1); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1098 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1099 | msg->dst = msg->lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1100 | |
| 1101 | return abis_rsl_sendmsg(msg); |
| 1102 | } |
| 1103 | |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1104 | /* Send "ESTABLISH REQUEST" message with given L3 Info payload */ |
| 1105 | /* Chapter 8.3.1 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1106 | int rsl_establish_request(struct gsm_lchan *lchan, uint8_t link_id) |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1107 | { |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1108 | struct msgb *msg; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1109 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1110 | msg = rsl_rll_simple(RSL_MT_EST_REQ, gsm_lchan2chan_nr(lchan), |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1111 | link_id, 0); |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1112 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1113 | |
Harald Welte | 17091bd | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 1114 | DEBUGP(DRLL, "%s RSL RLL ESTABLISH REQ (link_id=0x%02x)\n", |
| 1115 | gsm_lchan_name(lchan), link_id); |
| 1116 | |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1117 | return abis_rsl_sendmsg(msg); |
| 1118 | } |
| 1119 | |
Andreas Eversberg | ac27b95 | 2013-12-05 13:25:06 +0100 | [diff] [blame] | 1120 | static void rsl_handle_release(struct gsm_lchan *lchan); |
| 1121 | |
| 1122 | /* Special work handler to handle missing RSL_MT_REL_CONF message from |
| 1123 | * Nokia InSite BTS */ |
| 1124 | static void lchan_rel_work_cb(void *data) |
| 1125 | { |
| 1126 | struct gsm_lchan *lchan = data; |
| 1127 | int sapi; |
| 1128 | |
| 1129 | for (sapi = 0; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 1130 | if (lchan->sapis[sapi] == LCHAN_SAPI_REL) |
| 1131 | lchan->sapis[sapi] = LCHAN_SAPI_UNUSED; |
| 1132 | } |
| 1133 | rsl_handle_release(lchan); |
| 1134 | } |
| 1135 | |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1136 | /* Chapter 8.3.7 Request the release of multiframe mode of RLL connection. |
| 1137 | This is what higher layers should call. The BTS then responds with |
| 1138 | RELEASE CONFIRM, which we in turn use to trigger RSL CHANNEL RELEASE, |
| 1139 | which in turn is acknowledged by RSL CHANNEL RELEASE ACK, which calls |
| 1140 | lchan_free() */ |
Holger Hans Peter Freyther | 2806c79 | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 1141 | int rsl_release_request(struct gsm_lchan *lchan, uint8_t link_id, |
| 1142 | enum rsl_rel_mode release_mode) |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1143 | { |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1144 | |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1145 | struct msgb *msg; |
| 1146 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1147 | msg = rsl_rll_simple(RSL_MT_REL_REQ, gsm_lchan2chan_nr(lchan), |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1148 | link_id, 0); |
Holger Hans Peter Freyther | bcea9a7 | 2010-06-08 11:57:45 +0800 | [diff] [blame] | 1149 | /* 0 is normal release, 1 is local end */ |
Holger Hans Peter Freyther | 2806c79 | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 1150 | msgb_tv_put(msg, RSL_IE_RELEASE_MODE, release_mode); |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1151 | |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1152 | /* FIXME: start some timer in case we don't receive a REL ACK ? */ |
| 1153 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1154 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1155 | |
Harald Welte | 17091bd | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 1156 | DEBUGP(DRLL, "%s RSL RLL RELEASE REQ (link_id=0x%02x, reason=%u)\n", |
Holger Hans Peter Freyther | 2806c79 | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 1157 | gsm_lchan_name(lchan), link_id, release_mode); |
Harald Welte | 17091bd | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 1158 | |
Andreas Eversberg | ac27b95 | 2013-12-05 13:25:06 +0100 | [diff] [blame] | 1159 | abis_rsl_sendmsg(msg); |
| 1160 | |
| 1161 | /* Do not wait for Nokia BTS to send the confirm. */ |
| 1162 | if (is_nokia_bts(lchan->ts->trx->bts) |
| 1163 | && lchan->ts->trx->bts->nokia.no_loc_rel_cnf |
| 1164 | && release_mode == RSL_REL_LOCAL_END) { |
| 1165 | DEBUGP(DRLL, "Scheduling release, becasuse Nokia InSite BTS does not send a RELease CONFirm.\n"); |
| 1166 | lchan->sapis[link_id & 0x7] = LCHAN_SAPI_REL; |
| 1167 | lchan->rel_work.cb = lchan_rel_work_cb; |
| 1168 | lchan->rel_work.data = lchan; |
| 1169 | osmo_timer_schedule(&lchan->rel_work, 0, 0); |
| 1170 | } |
| 1171 | |
| 1172 | return 0; |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1173 | } |
| 1174 | |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1175 | int rsl_lchan_mark_broken(struct gsm_lchan *lchan, const char *reason) |
| 1176 | { |
Neels Hofmeyr | 0323f35 | 2016-08-24 16:48:00 +0200 | [diff] [blame] | 1177 | LOGP(DRSL, LOGL_ERROR, "%s %s lchan broken: %s\n", |
| 1178 | gsm_lchan_name(lchan), gsm_lchant_name(lchan->type), reason); |
| 1179 | rsl_lchan_set_state(lchan, LCHAN_S_BROKEN); |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1180 | lchan->broken_reason = reason; |
| 1181 | return 0; |
| 1182 | } |
| 1183 | |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 1184 | int rsl_lchan_set_state(struct gsm_lchan *lchan, int state) |
| 1185 | { |
Neels Hofmeyr | a4353c8 | 2016-06-21 21:34:46 +0200 | [diff] [blame] | 1186 | DEBUGP(DRSL, "%s state %s -> %s\n", |
| 1187 | gsm_lchan_name(lchan), gsm_lchans_name(lchan->state), |
| 1188 | gsm_lchans_name(state)); |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 1189 | lchan->state = state; |
| 1190 | return 0; |
| 1191 | } |
| 1192 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1193 | /* Chapter 8.4.2: Channel Activate Acknowledge */ |
| 1194 | static int rsl_rx_chan_act_ack(struct msgb *msg) |
| 1195 | { |
| 1196 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1197 | struct gsm_lchan *lchan = msg->lchan; |
Holger Hans Peter Freyther | 18e514c | 2016-08-18 08:49:21 +0200 | [diff] [blame] | 1198 | struct gsm_bts_trx_ts *ts = lchan->ts; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1199 | |
| 1200 | /* BTS has confirmed channel activation, we now need |
| 1201 | * to assign the activated channel to the MS */ |
| 1202 | if (rslh->ie_chan != RSL_IE_CHAN_NR) |
| 1203 | return -EINVAL; |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1204 | |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1205 | osmo_timer_del(&lchan->act_timer); |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 1206 | |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1207 | if (lchan->state == LCHAN_S_BROKEN) { |
Holger Hans Peter Freyther | 18e514c | 2016-08-18 08:49:21 +0200 | [diff] [blame] | 1208 | int do_release = is_sysmobts_v2(ts->trx->bts); |
| 1209 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK for broken channel. %s\n", |
| 1210 | gsm_lchan_name(lchan), |
| 1211 | do_release ? "Releasing it" : "Keeping it broken"); |
| 1212 | if (do_release) { |
| 1213 | talloc_free(lchan->rqd_ref); |
| 1214 | lchan->rqd_ref = NULL; |
| 1215 | lchan->rqd_ta = 0; |
| 1216 | rsl_lchan_set_state(msg->lchan, LCHAN_S_ACTIVE); |
| 1217 | if (ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH) { |
| 1218 | /* |
| 1219 | * lchan_act_tmr_cb() already called |
| 1220 | * lchan_free() and cleared the lchan->type, so |
| 1221 | * calling dyn_ts_switchover_complete() here |
| 1222 | * would not have the desired effect of |
| 1223 | * mimicking an activated lchan that we can |
| 1224 | * release. Instead hack the dyn ts state to |
| 1225 | * make sure that rsl_rx_rf_chan_rel_ack() will |
| 1226 | * switch back to PDCH, i.e. have pchan_is == |
| 1227 | * pchan_want, both != GSM_PCHAN_PDCH: |
| 1228 | */ |
| 1229 | ts->dyn.pchan_is = GSM_PCHAN_NONE; |
| 1230 | ts->dyn.pchan_want = GSM_PCHAN_NONE; |
| 1231 | } |
| 1232 | rsl_rf_chan_release(msg->lchan, 0, SACCH_NONE); |
| 1233 | } |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 1234 | return 0; |
| 1235 | } |
| 1236 | |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1237 | if (lchan->state != LCHAN_S_ACT_REQ) |
Harald Welte | ab2534c | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1238 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK, but state %s\n", |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1239 | gsm_lchan_name(lchan), |
| 1240 | gsm_lchans_name(lchan->state)); |
| 1241 | rsl_lchan_set_state(lchan, LCHAN_S_ACTIVE); |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1242 | |
Holger Hans Peter Freyther | 18e514c | 2016-08-18 08:49:21 +0200 | [diff] [blame] | 1243 | if (ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH) |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 1244 | dyn_ts_switchover_complete(lchan); |
| 1245 | |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1246 | if (lchan->rqd_ref) { |
| 1247 | rsl_send_imm_assignment(lchan); |
| 1248 | talloc_free(lchan->rqd_ref); |
| 1249 | lchan->rqd_ref = NULL; |
| 1250 | lchan->rqd_ta = 0; |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1251 | } |
| 1252 | |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1253 | send_lchan_signal(S_LCHAN_ACTIVATE_ACK, lchan, NULL); |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1254 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1255 | return 0; |
| 1256 | } |
| 1257 | |
| 1258 | /* Chapter 8.4.3: Channel Activate NACK */ |
| 1259 | static int rsl_rx_chan_act_nack(struct msgb *msg) |
| 1260 | { |
| 1261 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1262 | struct tlv_parsed tp; |
| 1263 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 1264 | osmo_timer_del(&msg->lchan->act_timer); |
| 1265 | |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 1266 | if (msg->lchan->state == LCHAN_S_BROKEN) { |
| 1267 | LOGP(DRSL, LOGL_ERROR, |
| 1268 | "%s CHANNEL ACTIVATE NACK for broken channel.\n", |
| 1269 | gsm_lchan_name(msg->lchan)); |
| 1270 | return -1; |
| 1271 | } |
| 1272 | |
Daniel Willmann | 9e9d44c | 2011-08-11 04:54:23 +0200 | [diff] [blame] | 1273 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL ACTIVATE NACK ", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1274 | gsm_lchan_name(msg->lchan)); |
Harald Welte (local) | ed6d762 | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 1275 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1276 | /* BTS has rejected channel activation ?!? */ |
| 1277 | if (dh->ie_chan != RSL_IE_CHAN_NR) |
| 1278 | return -EINVAL; |
| 1279 | |
| 1280 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1281 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1282 | const uint8_t *cause = TLVP_VAL(&tp, RSL_IE_CAUSE); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1283 | print_rsl_cause(LOGL_ERROR, cause, |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1284 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
Holger Hans Peter Freyther | 5149c17 | 2012-12-06 19:25:06 +0100 | [diff] [blame] | 1285 | msg->lchan->error_cause = *cause; |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1286 | if (*cause != RSL_ERR_RCH_ALR_ACTV_ALLOC) { |
| 1287 | rsl_lchan_mark_broken(msg->lchan, "NACK on activation"); |
| 1288 | } else |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1289 | rsl_rf_chan_release(msg->lchan, 1, SACCH_DEACTIVATE); |
Daniel Willmann | 245ee03 | 2011-08-11 04:47:11 +0200 | [diff] [blame] | 1290 | |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1291 | } else { |
| 1292 | rsl_lchan_mark_broken(msg->lchan, "NACK on activation no IE"); |
| 1293 | } |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1294 | |
Harald Welte (local) | ed6d762 | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 1295 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
| 1296 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1297 | send_lchan_signal(S_LCHAN_ACTIVATE_NACK, msg->lchan, NULL); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1298 | return 0; |
| 1299 | } |
| 1300 | |
| 1301 | /* Chapter 8.4.4: Connection Failure Indication */ |
| 1302 | static int rsl_rx_conn_fail(struct msgb *msg) |
| 1303 | { |
| 1304 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1305 | struct tlv_parsed tp; |
| 1306 | |
Holger Hans Peter Freyther | de4da29 | 2014-04-19 16:45:36 +0200 | [diff] [blame] | 1307 | LOGP(DRSL, LOGL_NOTICE, "%s CONNECTION FAIL: RELEASING state %s ", |
| 1308 | gsm_lchan_name(msg->lchan), |
| 1309 | gsm_lchans_name(msg->lchan->state)); |
| 1310 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1311 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1312 | |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1313 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1314 | print_rsl_cause(LOGL_NOTICE, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1315 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1316 | |
Harald Welte (local) | 4bd7664 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 1317 | LOGPC(DRSL, LOGL_NOTICE, "\n"); |
Alexander Couzens | d8aad3a | 2016-08-02 11:34:11 +0200 | [diff] [blame] | 1318 | rate_ctr_inc(&msg->lchan->ts->trx->bts->network->bsc_ctrs->ctr[BSC_CTR_CHAN_RF_FAIL]); |
Holger Hans Peter Freyther | 29eb19b | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 1319 | return rsl_rf_chan_release_err(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1320 | } |
| 1321 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1322 | static void print_meas_rep_uni(struct gsm_meas_rep_unidir *mru, |
| 1323 | const char *prefix) |
| 1324 | { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1325 | DEBUGPC(DMEAS, "RXL-FULL-%s=%3ddBm RXL-SUB-%s=%3ddBm ", |
| 1326 | prefix, rxlev2dbm(mru->full.rx_lev), |
| 1327 | prefix, rxlev2dbm(mru->sub.rx_lev)); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1328 | DEBUGPC(DMEAS, "RXQ-FULL-%s=%d RXQ-SUB-%s=%d ", |
| 1329 | prefix, mru->full.rx_qual, prefix, mru->sub.rx_qual); |
| 1330 | } |
| 1331 | |
Harald Welte | 50290cc | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1332 | static void print_meas_rep(struct gsm_lchan *lchan, struct gsm_meas_rep *mr) |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1333 | { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1334 | int i; |
Harald Welte | 50290cc | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1335 | char *name = ""; |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1336 | |
Harald Welte | b764f1c | 2015-12-28 14:04:36 +0100 | [diff] [blame] | 1337 | if (lchan && lchan->conn) |
Harald Welte | 50290cc | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1338 | name = subscr_name(lchan->conn->subscr); |
| 1339 | |
| 1340 | DEBUGP(DMEAS, "[%s] MEASUREMENT RESULT NR=%d ", name, mr->nr); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1341 | |
| 1342 | if (mr->flags & MEAS_REP_F_DL_DTX) |
| 1343 | DEBUGPC(DMEAS, "DTXd "); |
| 1344 | |
| 1345 | print_meas_rep_uni(&mr->ul, "ul"); |
| 1346 | DEBUGPC(DMEAS, "BS_POWER=%d ", mr->bs_power); |
| 1347 | if (mr->flags & MEAS_REP_F_MS_TO) |
| 1348 | DEBUGPC(DMEAS, "MS_TO=%d ", mr->ms_timing_offset); |
| 1349 | |
| 1350 | if (mr->flags & MEAS_REP_F_MS_L1) { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1351 | DEBUGPC(DMEAS, "L1_MS_PWR=%3ddBm ", mr->ms_l1.pwr); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1352 | DEBUGPC(DMEAS, "L1_FPC=%u ", |
| 1353 | mr->flags & MEAS_REP_F_FPC ? 1 : 0); |
| 1354 | DEBUGPC(DMEAS, "L1_TA=%u ", mr->ms_l1.ta); |
| 1355 | } |
| 1356 | |
| 1357 | if (mr->flags & MEAS_REP_F_UL_DTX) |
| 1358 | DEBUGPC(DMEAS, "DTXu "); |
| 1359 | if (mr->flags & MEAS_REP_F_BA1) |
| 1360 | DEBUGPC(DMEAS, "BA1 "); |
| 1361 | if (!(mr->flags & MEAS_REP_F_DL_VALID)) |
| 1362 | DEBUGPC(DMEAS, "NOT VALID "); |
| 1363 | else |
| 1364 | print_meas_rep_uni(&mr->dl, "dl"); |
| 1365 | |
| 1366 | DEBUGPC(DMEAS, "NUM_NEIGH=%u\n", mr->num_cell); |
Harald Welte | 0b833f8 | 2009-12-19 18:33:05 +0100 | [diff] [blame] | 1367 | if (mr->num_cell == 7) |
| 1368 | return; |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1369 | for (i = 0; i < mr->num_cell; i++) { |
| 1370 | struct gsm_meas_rep_cell *mrc = &mr->cell[i]; |
Harald Welte | 350c2d3 | 2009-12-25 23:02:22 +0100 | [diff] [blame] | 1371 | DEBUGP(DMEAS, "IDX=%u ARFCN=%u BSIC=%u => %d dBm\n", |
| 1372 | mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev)); |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1373 | } |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1374 | } |
| 1375 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1376 | static int rsl_rx_meas_res(struct msgb *msg) |
| 1377 | { |
| 1378 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1379 | struct tlv_parsed tp; |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1380 | struct gsm_meas_rep *mr = lchan_next_meas_rep(msg->lchan); |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1381 | uint8_t len; |
| 1382 | const uint8_t *val; |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1383 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1384 | |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1385 | /* check if this channel is actually active */ |
| 1386 | /* FIXME: maybe this check should be way more generic/centralized */ |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1387 | if (msg->lchan->state != LCHAN_S_ACTIVE) { |
Holger Hans Peter Freyther | 67a2e29 | 2010-07-29 14:50:57 +0800 | [diff] [blame] | 1388 | LOGP(DRSL, LOGL_DEBUG, "%s: MEAS RES for inactive channel\n", |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1389 | gsm_lchan_name(msg->lchan)); |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1390 | return 0; |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1391 | } |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1392 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1393 | memset(mr, 0, sizeof(*mr)); |
Harald Welte | aa0efa1 | 2009-12-16 23:29:34 +0100 | [diff] [blame] | 1394 | mr->lchan = msg->lchan; |
Harald Welte | 4efcc54 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 1395 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1396 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1397 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1398 | if (!TLVP_PRESENT(&tp, RSL_IE_MEAS_RES_NR) || |
| 1399 | !TLVP_PRESENT(&tp, RSL_IE_UPLINK_MEAS) || |
| 1400 | !TLVP_PRESENT(&tp, RSL_IE_BS_POWER)) |
| 1401 | return -EIO; |
| 1402 | |
| 1403 | /* Mandatory Parts */ |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1404 | mr->nr = *TLVP_VAL(&tp, RSL_IE_MEAS_RES_NR); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1405 | |
| 1406 | len = TLVP_LEN(&tp, RSL_IE_UPLINK_MEAS); |
| 1407 | val = TLVP_VAL(&tp, RSL_IE_UPLINK_MEAS); |
| 1408 | if (len >= 3) { |
| 1409 | if (val[0] & 0x40) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1410 | mr->flags |= MEAS_REP_F_DL_DTX; |
| 1411 | mr->ul.full.rx_lev = val[0] & 0x3f; |
| 1412 | mr->ul.sub.rx_lev = val[1] & 0x3f; |
| 1413 | mr->ul.full.rx_qual = val[2]>>3 & 0x7; |
| 1414 | mr->ul.sub.rx_qual = val[2] & 0x7; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1415 | } |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1416 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1417 | mr->bs_power = *TLVP_VAL(&tp, RSL_IE_BS_POWER); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1418 | |
| 1419 | /* Optional Parts */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1420 | if (TLVP_PRESENT(&tp, RSL_IE_MS_TIMING_OFFSET)) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1421 | mr->ms_timing_offset = |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1422 | *TLVP_VAL(&tp, RSL_IE_MS_TIMING_OFFSET); |
| 1423 | |
Harald Welte | a1467eb | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 1424 | if (TLVP_PRESENT(&tp, RSL_IE_L1_INFO)) { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1425 | struct e1inp_sign_link *sign_link = msg->dst; |
| 1426 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1427 | val = TLVP_VAL(&tp, RSL_IE_L1_INFO); |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1428 | mr->flags |= MEAS_REP_F_MS_L1; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1429 | mr->ms_l1.pwr = ms_pwr_dbm(sign_link->trx->bts->band, val[0] >> 3); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1430 | if (val[0] & 0x04) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1431 | mr->flags |= MEAS_REP_F_FPC; |
| 1432 | mr->ms_l1.ta = val[1]; |
Andreas Eversberg | fe56cf8 | 2011-12-24 11:49:05 +0100 | [diff] [blame] | 1433 | /* BS11 and Nokia reports TA shifted by 2 bits */ |
| 1434 | if (msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_BS11 |
| 1435 | || msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_NOKIA_SITE) |
Andreas Eversberg | 0f18e5e | 2011-12-16 17:45:37 +0100 | [diff] [blame] | 1436 | mr->ms_l1.ta >>= 2; |
Harald Welte | a1467eb | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 1437 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1438 | if (TLVP_PRESENT(&tp, RSL_IE_L3_INFO)) { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1439 | msg->l3h = (uint8_t *) TLVP_VAL(&tp, RSL_IE_L3_INFO); |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1440 | rc = gsm48_parse_meas_rep(mr, msg); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1441 | if (rc < 0) |
| 1442 | return rc; |
| 1443 | } |
| 1444 | |
Harald Welte | 50290cc | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1445 | print_meas_rep(msg->lchan, mr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1446 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1447 | send_lchan_signal(S_LCHAN_MEAS_REP, msg->lchan, mr); |
Harald Welte | 4efcc54 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 1448 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1449 | return 0; |
| 1450 | } |
| 1451 | |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1452 | /* Chapter 8.4.7 */ |
| 1453 | static int rsl_rx_hando_det(struct msgb *msg) |
| 1454 | { |
| 1455 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1456 | struct tlv_parsed tp; |
| 1457 | |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1458 | DEBUGP(DRSL, "%s HANDOVER DETECT ", gsm_lchan_name(msg->lchan)); |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1459 | |
| 1460 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1461 | |
| 1462 | if (TLVP_PRESENT(&tp, RSL_IE_ACCESS_DELAY)) |
| 1463 | DEBUGPC(DRSL, "access delay = %u\n", |
| 1464 | *TLVP_VAL(&tp, RSL_IE_ACCESS_DELAY)); |
| 1465 | else |
| 1466 | DEBUGPC(DRSL, "\n"); |
| 1467 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1468 | send_lchan_signal(S_LCHAN_HANDOVER_DETECT, msg->lchan, NULL); |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1469 | |
| 1470 | return 0; |
| 1471 | } |
| 1472 | |
Neels Hofmeyr | 6297b74 | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1473 | static bool lchan_may_change_pdch(struct gsm_lchan *lchan, bool pdch_act) |
| 1474 | { |
| 1475 | struct gsm_bts_trx_ts *ts; |
Neels Hofmeyr | 6297b74 | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1476 | |
| 1477 | OSMO_ASSERT(lchan); |
| 1478 | |
| 1479 | ts = lchan->ts; |
| 1480 | OSMO_ASSERT(ts); |
| 1481 | OSMO_ASSERT(ts->trx); |
| 1482 | OSMO_ASSERT(ts->trx->bts); |
| 1483 | |
| 1484 | if (lchan->ts->pchan != GSM_PCHAN_TCH_F_PDCH) { |
Neels Hofmeyr | 50c2bd4 | 2016-06-21 20:53:27 +0200 | [diff] [blame] | 1485 | LOGP(DRSL, LOGL_ERROR, "%s pchan=%s Rx PDCH %s ACK" |
| 1486 | " for channel that is no TCH/F_PDCH\n", |
| 1487 | gsm_lchan_name(lchan), |
Neels Hofmeyr | 6297b74 | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1488 | gsm_pchan_name(ts->pchan), |
| 1489 | pdch_act? "ACT" : "DEACT"); |
| 1490 | return false; |
| 1491 | } |
| 1492 | |
Neels Hofmeyr | 10b0f1d | 2016-06-14 13:12:00 +0200 | [diff] [blame] | 1493 | if (lchan->state != LCHAN_S_NONE) { |
Neels Hofmeyr | 50c2bd4 | 2016-06-21 20:53:27 +0200 | [diff] [blame] | 1494 | LOGP(DRSL, LOGL_ERROR, "%s pchan=%s Rx PDCH %s ACK" |
| 1495 | " in unexpected state: %s\n", |
| 1496 | gsm_lchan_name(lchan), |
Neels Hofmeyr | 6297b74 | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1497 | gsm_pchan_name(ts->pchan), |
| 1498 | pdch_act? "ACT" : "DEACT", |
| 1499 | gsm_lchans_name(lchan->state)); |
| 1500 | return false; |
| 1501 | } |
| 1502 | return true; |
| 1503 | } |
| 1504 | |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1505 | static int rsl_rx_pdch_act_ack(struct msgb *msg) |
| 1506 | { |
Neels Hofmeyr | 6297b74 | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1507 | if (!lchan_may_change_pdch(msg->lchan, true)) |
| 1508 | return -EINVAL; |
| 1509 | |
Neels Hofmeyr | 5a3c23c | 2016-06-14 14:08:35 +0200 | [diff] [blame] | 1510 | msg->lchan->ts->flags |= TS_F_PDCH_ACTIVE; |
Neels Hofmeyr | 1d9a3aa | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 1511 | msg->lchan->ts->flags &= ~TS_F_PDCH_ACT_PENDING; |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1512 | |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1513 | return 0; |
| 1514 | } |
| 1515 | |
| 1516 | static int rsl_rx_pdch_deact_ack(struct msgb *msg) |
| 1517 | { |
Neels Hofmeyr | 6297b74 | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1518 | if (!lchan_may_change_pdch(msg->lchan, false)) |
| 1519 | return -EINVAL; |
| 1520 | |
Neels Hofmeyr | 5a3c23c | 2016-06-14 14:08:35 +0200 | [diff] [blame] | 1521 | msg->lchan->ts->flags &= ~TS_F_PDCH_ACTIVE; |
Neels Hofmeyr | 1d9a3aa | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 1522 | msg->lchan->ts->flags &= ~TS_F_PDCH_DEACT_PENDING; |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1523 | |
Neels Hofmeyr | 3c0df95 | 2016-07-23 21:00:51 +0200 | [diff] [blame] | 1524 | rsl_chan_activate_lchan(msg->lchan, msg->lchan->dyn.act_type, |
| 1525 | msg->lchan->dyn.ho_ref); |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1526 | |
| 1527 | return 0; |
| 1528 | } |
| 1529 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1530 | static int abis_rsl_rx_dchan(struct msgb *msg) |
| 1531 | { |
| 1532 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1533 | int rc = 0; |
| 1534 | char *ts_name; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1535 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1536 | |
Neels Hofmeyr | 0781eb0 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 1537 | msg->lchan = lchan_lookup(sign_link->trx, rslh->chan_nr, |
| 1538 | "Abis RSL rx DCHAN: "); |
Neels Hofmeyr | 0f4e895 | 2016-10-10 03:24:05 +0200 | [diff] [blame] | 1539 | if (!msg->lchan) |
| 1540 | return -1; |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1541 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1542 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1543 | switch (rslh->c.msg_type) { |
| 1544 | case RSL_MT_CHAN_ACTIV_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1545 | DEBUGP(DRSL, "%s CHANNEL ACTIVATE ACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1546 | rc = rsl_rx_chan_act_ack(msg); |
Alexander Couzens | 4f598fc | 2016-08-23 06:27:19 +0200 | [diff] [blame] | 1547 | count_codecs(sign_link->trx->bts, msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1548 | break; |
| 1549 | case RSL_MT_CHAN_ACTIV_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1550 | rc = rsl_rx_chan_act_nack(msg); |
| 1551 | break; |
| 1552 | case RSL_MT_CONN_FAIL: |
| 1553 | rc = rsl_rx_conn_fail(msg); |
| 1554 | break; |
| 1555 | case RSL_MT_MEAS_RES: |
| 1556 | rc = rsl_rx_meas_res(msg); |
| 1557 | break; |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1558 | case RSL_MT_HANDO_DET: |
| 1559 | rc = rsl_rx_hando_det(msg); |
| 1560 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1561 | case RSL_MT_RF_CHAN_REL_ACK: |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 1562 | rc = rsl_rx_rf_chan_rel_ack(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1563 | break; |
| 1564 | case RSL_MT_MODE_MODIFY_ACK: |
Alexander Couzens | 4f598fc | 2016-08-23 06:27:19 +0200 | [diff] [blame] | 1565 | count_codecs(sign_link->trx->bts, msg->lchan); |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1566 | DEBUGP(DRSL, "%s CHANNEL MODE MODIFY ACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1567 | break; |
| 1568 | case RSL_MT_MODE_MODIFY_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1569 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL MODE MODIFY NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1570 | break; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1571 | case RSL_MT_IPAC_PDCH_ACT_ACK: |
Neels Hofmeyr | 6b27230 | 2016-05-31 17:51:41 +0200 | [diff] [blame] | 1572 | DEBUGP(DRSL, "%s IPAC PDCH ACT ACK\n", ts_name); |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1573 | rc = rsl_rx_pdch_act_ack(msg); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1574 | break; |
| 1575 | case RSL_MT_IPAC_PDCH_ACT_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1576 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH ACT NACK\n", ts_name); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1577 | break; |
| 1578 | case RSL_MT_IPAC_PDCH_DEACT_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1579 | DEBUGP(DRSL, "%s IPAC PDCH DEACT ACK\n", ts_name); |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1580 | rc = rsl_rx_pdch_deact_ack(msg); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1581 | break; |
| 1582 | case RSL_MT_IPAC_PDCH_DEACT_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1583 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH DEACT NACK\n", ts_name); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1584 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1585 | case RSL_MT_PHY_CONTEXT_CONF: |
| 1586 | case RSL_MT_PREPROC_MEAS_RES: |
| 1587 | case RSL_MT_TALKER_DET: |
| 1588 | case RSL_MT_LISTENER_DET: |
| 1589 | case RSL_MT_REMOTE_CODEC_CONF_REP: |
| 1590 | case RSL_MT_MR_CODEC_MOD_ACK: |
| 1591 | case RSL_MT_MR_CODEC_MOD_NACK: |
| 1592 | case RSL_MT_MR_CODEC_MOD_PER: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1593 | LOGP(DRSL, LOGL_NOTICE, "%s Unimplemented Abis RSL DChan " |
| 1594 | "msg 0x%02x\n", ts_name, rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1595 | break; |
| 1596 | default: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1597 | LOGP(DRSL, LOGL_NOTICE, "%s unknown Abis RSL DChan msg 0x%02x\n", |
| 1598 | ts_name, rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1599 | return -EINVAL; |
| 1600 | } |
| 1601 | |
| 1602 | return rc; |
| 1603 | } |
| 1604 | |
| 1605 | static int rsl_rx_error_rep(struct msgb *msg) |
| 1606 | { |
| 1607 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1608 | struct tlv_parsed tp; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1609 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1610 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1611 | LOGP(DRSL, LOGL_ERROR, "%s ERROR REPORT ", gsm_trx_name(sign_link->trx)); |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1612 | |
| 1613 | rsl_tlv_parse(&tp, rslh->data, msgb_l2len(msg)-sizeof(*rslh)); |
| 1614 | |
| 1615 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1616 | print_rsl_cause(LOGL_ERROR, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1617 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1618 | |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1619 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1620 | |
| 1621 | return 0; |
| 1622 | } |
| 1623 | |
| 1624 | static int abis_rsl_rx_trx(struct msgb *msg) |
| 1625 | { |
| 1626 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1627 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1628 | int rc = 0; |
| 1629 | |
| 1630 | switch (rslh->msg_type) { |
| 1631 | case RSL_MT_ERROR_REPORT: |
| 1632 | rc = rsl_rx_error_rep(msg); |
| 1633 | break; |
| 1634 | case RSL_MT_RF_RES_IND: |
| 1635 | /* interference on idle channels of TRX */ |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1636 | //DEBUGP(DRSL, "%s RF Resource Indication\n", gsm_trx_name(sign_link->trx)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1637 | break; |
| 1638 | case RSL_MT_OVERLOAD: |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1639 | /* indicate CCCH / ACCH / processor overload */ |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1640 | LOGP(DRSL, LOGL_ERROR, "%s CCCH/ACCH/CPU Overload\n", |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1641 | gsm_trx_name(sign_link->trx)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1642 | break; |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 1643 | case 0x42: /* Nokia specific: SI End ACK */ |
| 1644 | LOGP(DRSL, LOGL_INFO, "Nokia SI End ACK\n"); |
| 1645 | break; |
| 1646 | case 0x43: /* Nokia specific: SI End NACK */ |
| 1647 | LOGP(DRSL, LOGL_INFO, "Nokia SI End NACK\n"); |
| 1648 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1649 | default: |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1650 | LOGP(DRSL, LOGL_NOTICE, "%s Unknown Abis RSL TRX message " |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1651 | "type 0x%02x\n", gsm_trx_name(sign_link->trx), rslh->msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1652 | return -EINVAL; |
| 1653 | } |
| 1654 | return rc; |
| 1655 | } |
| 1656 | |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1657 | /* If T3101 expires, we never received a response to IMMEDIATE ASSIGN */ |
| 1658 | static void t3101_expired(void *data) |
| 1659 | { |
| 1660 | struct gsm_lchan *lchan = data; |
Max | f7f79ca | 2017-02-09 19:13:02 +0100 | [diff] [blame] | 1661 | LOGP(DRSL, LOGL_NOTICE, |
| 1662 | "%s T3101 expired: no response to IMMEDIATE ASSIGN\n", |
| 1663 | gsm_lchan_name(lchan)); |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1664 | rsl_rf_chan_release(lchan, 1, SACCH_DEACTIVATE); |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1665 | } |
| 1666 | |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1667 | /* If T3111 expires, we will send the RF Channel Request */ |
| 1668 | static void t3111_expired(void *data) |
| 1669 | { |
| 1670 | struct gsm_lchan *lchan = data; |
Max | f7f79ca | 2017-02-09 19:13:02 +0100 | [diff] [blame] | 1671 | LOGP(DRSL, LOGL_NOTICE, |
| 1672 | "%s T3111 expired: releasing RF Channel\n", |
| 1673 | gsm_lchan_name(lchan)); |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1674 | rsl_rf_chan_release(lchan, 0, SACCH_NONE); |
| 1675 | } |
| 1676 | |
| 1677 | /* If T3109 expires the MS has not send a UA/UM do the error release */ |
| 1678 | static void t3109_expired(void *data) |
| 1679 | { |
| 1680 | struct gsm_lchan *lchan = data; |
| 1681 | |
| 1682 | LOGP(DRSL, LOGL_ERROR, |
| 1683 | "%s SACCH deactivation timeout.\n", gsm_lchan_name(lchan)); |
| 1684 | rsl_rf_chan_release(lchan, 1, SACCH_NONE); |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1685 | } |
| 1686 | |
Harald Welte | a00fdd7 | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1687 | /* Format an IMM ASS REJ according to 04.08 Chapter 9.1.20 */ |
| 1688 | static int rsl_send_imm_ass_rej(struct gsm_bts *bts, |
| 1689 | unsigned int num_req_refs, |
| 1690 | struct gsm48_req_ref *rqd_refs, |
| 1691 | uint8_t wait_ind) |
| 1692 | { |
| 1693 | uint8_t buf[GSM_MACBLOCK_LEN]; |
| 1694 | struct gsm48_imm_ass_rej *iar = (struct gsm48_imm_ass_rej *)buf; |
| 1695 | |
| 1696 | /* create IMMEDIATE ASSIGN REJECT 04.08 message */ |
| 1697 | memset(iar, 0, sizeof(*iar)); |
| 1698 | iar->proto_discr = GSM48_PDISC_RR; |
Andreas Eversberg | dee934a | 2013-02-07 11:51:16 +0100 | [diff] [blame] | 1699 | iar->msg_type = GSM48_MT_RR_IMM_ASS_REJ; |
Harald Welte | a00fdd7 | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1700 | iar->page_mode = GSM48_PM_SAME; |
| 1701 | |
| 1702 | memcpy(&iar->req_ref1, &rqd_refs[0], sizeof(iar->req_ref1)); |
| 1703 | iar->wait_ind1 = wait_ind; |
| 1704 | |
| 1705 | if (num_req_refs >= 2) |
| 1706 | memcpy(&iar->req_ref2, &rqd_refs[1], sizeof(iar->req_ref2)); |
| 1707 | else |
| 1708 | memcpy(&iar->req_ref2, &rqd_refs[0], sizeof(iar->req_ref2)); |
| 1709 | iar->wait_ind2 = wait_ind; |
| 1710 | |
| 1711 | if (num_req_refs >= 3) |
| 1712 | memcpy(&iar->req_ref3, &rqd_refs[2], sizeof(iar->req_ref3)); |
| 1713 | else |
| 1714 | memcpy(&iar->req_ref3, &rqd_refs[0], sizeof(iar->req_ref3)); |
| 1715 | iar->wait_ind3 = wait_ind; |
| 1716 | |
| 1717 | if (num_req_refs >= 4) |
| 1718 | memcpy(&iar->req_ref4, &rqd_refs[3], sizeof(iar->req_ref4)); |
| 1719 | else |
| 1720 | memcpy(&iar->req_ref4, &rqd_refs[0], sizeof(iar->req_ref4)); |
| 1721 | iar->wait_ind4 = wait_ind; |
| 1722 | |
Andreas Eversberg | dee934a | 2013-02-07 11:51:16 +0100 | [diff] [blame] | 1723 | /* we need to subtract 1 byte from sizeof(*iar) since ia includes the l2_plen field */ |
| 1724 | iar->l2_plen = GSM48_LEN2PLEN((sizeof(*iar)-1)); |
| 1725 | |
| 1726 | return rsl_imm_assign_cmd(bts, sizeof(*iar), (uint8_t *) iar); |
Harald Welte | a00fdd7 | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1727 | } |
| 1728 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1729 | /* MS has requested a channel on the RACH */ |
| 1730 | static int rsl_rx_chan_rqd(struct msgb *msg) |
| 1731 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1732 | struct e1inp_sign_link *sign_link = msg->dst; |
| 1733 | struct gsm_bts *bts = sign_link->trx->bts; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1734 | struct abis_rsl_dchan_hdr *rqd_hdr = msgb_l2(msg); |
| 1735 | struct gsm48_req_ref *rqd_ref; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1736 | enum gsm_chan_t lctype; |
| 1737 | enum gsm_chreq_reason_t chreq_reason; |
| 1738 | struct gsm_lchan *lchan; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1739 | uint8_t rqd_ta; |
Holger Hans Peter Freyther | db39203 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1740 | int is_lu; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1741 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1742 | uint16_t arfcn; |
Holger Hans Peter Freyther | efd75b5 | 2012-02-03 20:10:13 +0100 | [diff] [blame] | 1743 | uint8_t subch; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1744 | |
| 1745 | /* parse request reference to be used in immediate assign */ |
| 1746 | if (rqd_hdr->data[0] != RSL_IE_REQ_REFERENCE) |
| 1747 | return -EINVAL; |
| 1748 | |
| 1749 | rqd_ref = (struct gsm48_req_ref *) &rqd_hdr->data[1]; |
| 1750 | |
| 1751 | /* parse access delay and use as TA */ |
| 1752 | if (rqd_hdr->data[sizeof(struct gsm48_req_ref)+1] != RSL_IE_ACCESS_DELAY) |
| 1753 | return -EINVAL; |
| 1754 | rqd_ta = rqd_hdr->data[sizeof(struct gsm48_req_ref)+2]; |
| 1755 | |
| 1756 | /* determine channel type (SDCCH/TCH_F/TCH_H) based on |
| 1757 | * request reference RA */ |
Holger Hans Peter Freyther | f0f37f1 | 2010-09-06 09:36:02 +0800 | [diff] [blame] | 1758 | lctype = get_ctype_by_chreq(bts->network, rqd_ref->ra); |
| 1759 | chreq_reason = get_reason_by_chreq(rqd_ref->ra, bts->network->neci); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1760 | |
Alexander Couzens | d8aad3a | 2016-08-02 11:34:11 +0200 | [diff] [blame] | 1761 | rate_ctr_inc(&bts->network->bsc_ctrs->ctr[BSC_CTR_CHREQ_TOTAL]); |
Harald Welte | 3edc5a9 | 2009-12-22 00:41:05 +0100 | [diff] [blame] | 1762 | |
Holger Hans Peter Freyther | db39203 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1763 | /* |
| 1764 | * We want LOCATION UPDATES to succeed and will assign a TCH |
| 1765 | * if we have no SDCCH available. |
| 1766 | */ |
| 1767 | is_lu = !!(chreq_reason == GSM_CHREQ_REASON_LOCATION_UPD); |
| 1768 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1769 | /* check availability / allocate channel */ |
Holger Hans Peter Freyther | db39203 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1770 | lchan = lchan_alloc(bts, lctype, is_lu); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1771 | if (!lchan) { |
Harald Welte (local) | e0bb5fa | 2009-12-27 13:48:09 +0100 | [diff] [blame] | 1772 | LOGP(DRSL, LOGL_NOTICE, "BTS %d CHAN RQD: no resources for %s 0x%x\n", |
Harald Welte (local) | 02204d0 | 2009-12-27 18:05:25 +0100 | [diff] [blame] | 1773 | msg->lchan->ts->trx->bts->nr, gsm_lchant_name(lctype), rqd_ref->ra); |
Alexander Couzens | d8aad3a | 2016-08-02 11:34:11 +0200 | [diff] [blame] | 1774 | rate_ctr_inc(&bts->network->bsc_ctrs->ctr[BSC_CTR_CHREQ_NO_CHANNEL]); |
Harald Welte | a00fdd7 | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1775 | /* FIXME gather multiple CHAN RQD and reject up to 4 at the same time */ |
| 1776 | if (bts->network->T3122) |
| 1777 | rsl_send_imm_ass_rej(bts, 1, rqd_ref, bts->network->T3122 & 0xff); |
Harald Welte | cf7c90c | 2012-11-13 04:46:03 +0100 | [diff] [blame] | 1778 | return 0; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1779 | } |
| 1780 | |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 1781 | /* |
| 1782 | * Expecting lchan state to be NONE, except for dyn TS in PDCH mode. |
| 1783 | * Those are expected to be ACTIVE: the PDCH release will be sent from |
| 1784 | * rsl_chan_activate_lchan() below. |
| 1785 | */ |
| 1786 | if (lchan->state != LCHAN_S_NONE |
| 1787 | && !(lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH |
| 1788 | && lchan->ts->dyn.pchan_is == GSM_PCHAN_PDCH |
| 1789 | && lchan->state == LCHAN_S_ACTIVE)) |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1790 | LOGP(DRSL, LOGL_NOTICE, "%s lchan_alloc() returned channel " |
Harald Welte | ab2534c | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1791 | "in state %s\n", gsm_lchan_name(lchan), |
| 1792 | gsm_lchans_name(lchan->state)); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1793 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1794 | /* save the RACH data as we need it after the CHAN ACT ACK */ |
| 1795 | lchan->rqd_ref = talloc_zero(bts, struct gsm48_req_ref); |
| 1796 | if (!lchan->rqd_ref) { |
| 1797 | LOGP(DRSL, LOGL_ERROR, "Failed to allocate gsm48_req_ref.\n"); |
| 1798 | lchan_free(lchan); |
| 1799 | return -ENOMEM; |
| 1800 | } |
| 1801 | |
| 1802 | memcpy(lchan->rqd_ref, rqd_ref, sizeof(*rqd_ref)); |
| 1803 | lchan->rqd_ta = rqd_ta; |
| 1804 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1805 | arfcn = lchan->ts->trx->arfcn; |
| 1806 | subch = lchan->nr; |
| 1807 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 1808 | lchan->encr.alg_id = RSL_ENC_ALG_A5(0); /* no encryption */ |
Harald Welte (local) | cbd4610 | 2009-08-13 10:14:26 +0200 | [diff] [blame] | 1809 | lchan->ms_power = ms_pwr_ctl_lvl(bts->band, bts->ms_max_power); |
Harald Welte | 9a229e1 | 2009-08-10 00:45:40 +0200 | [diff] [blame] | 1810 | lchan->bs_power = 0; /* 0dB reduction, output power = Pn */ |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 1811 | lchan->rsl_cmode = RSL_CMOD_SPD_SIGN; |
Harald Welte | 77234e1 | 2009-08-28 23:28:28 +0900 | [diff] [blame] | 1812 | lchan->tch_mode = GSM48_CMODE_SIGN; |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1813 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 1814 | /* Start another timer or assume the BTS sends a ACK/NACK? */ |
| 1815 | lchan->act_timer.cb = lchan_act_tmr_cb; |
| 1816 | lchan->act_timer.data = lchan; |
| 1817 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 1818 | |
Andreas Eversberg | 0f18e5e | 2011-12-16 17:45:37 +0100 | [diff] [blame] | 1819 | DEBUGP(DRSL, "%s Activating ARFCN(%u) SS(%u) lctype %s " |
| 1820 | "r=%s ra=0x%02x ta=%d\n", gsm_lchan_name(lchan), arfcn, subch, |
| 1821 | gsm_lchant_name(lchan->type), gsm_chreq_name(chreq_reason), |
| 1822 | rqd_ref->ra, rqd_ta); |
| 1823 | |
Neels Hofmeyr | fe9fdfa | 2016-07-15 01:26:03 +0200 | [diff] [blame] | 1824 | rsl_chan_activate_lchan(lchan, RSL_ACT_INTRA_IMM_ASS, 0); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1825 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1826 | return 0; |
| 1827 | } |
| 1828 | |
| 1829 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan) |
| 1830 | { |
| 1831 | struct gsm_bts *bts = lchan->ts->trx->bts; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1832 | uint8_t buf[GSM_MACBLOCK_LEN]; |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1833 | struct gsm48_imm_ass *ia = (struct gsm48_imm_ass *) buf; |
| 1834 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1835 | /* create IMMEDIATE ASSIGN 04.08 messge */ |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1836 | memset(ia, 0, sizeof(*ia)); |
laforge | 50312e8 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1837 | /* we set ia->l2_plen once we know the length of the MA below */ |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1838 | ia->proto_discr = GSM48_PDISC_RR; |
| 1839 | ia->msg_type = GSM48_MT_RR_IMM_ASS; |
| 1840 | ia->page_mode = GSM48_PM_SAME; |
| 1841 | gsm48_lchan2chan_desc(&ia->chan_desc, lchan); |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1842 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1843 | /* use request reference extracted from CHAN_RQD */ |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1844 | memcpy(&ia->req_ref, lchan->rqd_ref, sizeof(ia->req_ref)); |
| 1845 | ia->timing_advance = lchan->rqd_ta; |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1846 | if (!lchan->ts->hopping.enabled) { |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1847 | ia->mob_alloc_len = 0; |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1848 | } else { |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1849 | ia->mob_alloc_len = lchan->ts->hopping.ma_len; |
| 1850 | memcpy(ia->mob_alloc, lchan->ts->hopping.ma_data, ia->mob_alloc_len); |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1851 | } |
Harald Welte | 07f3218 | 2010-06-28 18:41:27 +0200 | [diff] [blame] | 1852 | /* we need to subtract 1 byte from sizeof(*ia) since ia includes the l2_plen field */ |
| 1853 | ia->l2_plen = GSM48_LEN2PLEN((sizeof(*ia)-1) + ia->mob_alloc_len); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1854 | |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1855 | /* Start timer T3101 to wait for GSM48_MT_RR_PAG_RESP */ |
| 1856 | lchan->T3101.cb = t3101_expired; |
| 1857 | lchan->T3101.data = lchan; |
Pablo Neira Ayuso | 840ccf6 | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1858 | osmo_timer_schedule(&lchan->T3101, bts->network->T3101, 0); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1859 | |
| 1860 | /* send IMMEDIATE ASSIGN CMD on RSL to BTS (to send on CCCH to MS) */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1861 | return rsl_imm_assign_cmd(bts, sizeof(*ia)+ia->mob_alloc_len, (uint8_t *) ia); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1862 | } |
| 1863 | |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1864 | /* current load on the CCCH */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1865 | static int rsl_rx_ccch_load(struct msgb *msg) |
| 1866 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1867 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1868 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1869 | struct ccch_signal_data sd; |
| 1870 | |
| 1871 | sd.bts = sign_link->trx->bts; |
| 1872 | sd.rach_slot_count = -1; |
| 1873 | sd.rach_busy_count = -1; |
| 1874 | sd.rach_access_count = -1; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1875 | |
| 1876 | switch (rslh->data[0]) { |
| 1877 | case RSL_IE_PAGING_LOAD: |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1878 | sd.pg_buf_space = rslh->data[1] << 8 | rslh->data[2]; |
| 1879 | if (is_ipaccess_bts(sign_link->trx->bts) && sd.pg_buf_space == 0xffff) { |
Harald Welte | 008a492 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1880 | /* paging load below configured threshold, use 50 as default */ |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1881 | sd.pg_buf_space = 50; |
Harald Welte | 008a492 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1882 | } |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1883 | paging_update_buffer_space(sign_link->trx->bts, sd.pg_buf_space); |
| 1884 | osmo_signal_dispatch(SS_CCCH, S_CCCH_PAGING_LOAD, &sd); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1885 | break; |
| 1886 | case RSL_IE_RACH_LOAD: |
| 1887 | if (msg->data_len >= 7) { |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1888 | sd.rach_slot_count = rslh->data[2] << 8 | rslh->data[3]; |
| 1889 | sd.rach_busy_count = rslh->data[4] << 8 | rslh->data[5]; |
| 1890 | sd.rach_access_count = rslh->data[6] << 8 | rslh->data[7]; |
| 1891 | osmo_signal_dispatch(SS_CCCH, S_CCCH_RACH_LOAD, &sd); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1892 | } |
| 1893 | break; |
| 1894 | default: |
| 1895 | break; |
| 1896 | } |
| 1897 | |
| 1898 | return 0; |
| 1899 | } |
| 1900 | |
| 1901 | static int abis_rsl_rx_cchan(struct msgb *msg) |
| 1902 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1903 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1904 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1905 | int rc = 0; |
| 1906 | |
Neels Hofmeyr | 0781eb0 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 1907 | msg->lchan = lchan_lookup(sign_link->trx, rslh->chan_nr, |
| 1908 | "Abis RSL rx CCHAN: "); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1909 | |
| 1910 | switch (rslh->c.msg_type) { |
| 1911 | case RSL_MT_CHAN_RQD: |
| 1912 | /* MS has requested a channel on the RACH */ |
| 1913 | rc = rsl_rx_chan_rqd(msg); |
| 1914 | break; |
| 1915 | case RSL_MT_CCCH_LOAD_IND: |
| 1916 | /* current load on the CCCH */ |
| 1917 | rc = rsl_rx_ccch_load(msg); |
| 1918 | break; |
| 1919 | case RSL_MT_DELETE_IND: |
| 1920 | /* CCCH overloaded, IMM_ASSIGN was dropped */ |
| 1921 | case RSL_MT_CBCH_LOAD_IND: |
| 1922 | /* current load on the CBCH */ |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1923 | LOGP(DRSL, LOGL_NOTICE, "Unimplemented Abis RSL TRX message " |
| 1924 | "type 0x%02x\n", rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1925 | break; |
| 1926 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1927 | LOGP(DRSL, LOGL_NOTICE, "Unknown Abis RSL TRX message type " |
| 1928 | "0x%02x\n", rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1929 | return -EINVAL; |
| 1930 | } |
| 1931 | |
| 1932 | return rc; |
| 1933 | } |
| 1934 | |
| 1935 | static int rsl_rx_rll_err_ind(struct msgb *msg) |
| 1936 | { |
Holger Hans Peter Freyther | 80abe25 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1937 | struct tlv_parsed tp; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1938 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Holger Hans Peter Freyther | 80abe25 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1939 | uint8_t rlm_cause; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1940 | |
Holger Hans Peter Freyther | 80abe25 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1941 | rsl_tlv_parse(&tp, rllh->data, msgb_l2len(msg) - sizeof(*rllh)); |
| 1942 | if (!TLVP_PRESENT(&tp, RSL_IE_RLM_CAUSE)) { |
| 1943 | LOGP(DRLL, LOGL_ERROR, |
| 1944 | "%s ERROR INDICATION without mandantory cause.\n", |
| 1945 | gsm_lchan_name(msg->lchan)); |
| 1946 | return -1; |
| 1947 | } |
| 1948 | |
| 1949 | rlm_cause = *TLVP_VAL(&tp, RSL_IE_RLM_CAUSE); |
Holger Hans Peter Freyther | de4da29 | 2014-04-19 16:45:36 +0200 | [diff] [blame] | 1950 | LOGP(DRLL, LOGL_ERROR, "%s ERROR INDICATION cause=%s in state=%s\n", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1951 | gsm_lchan_name(msg->lchan), |
Holger Hans Peter Freyther | de4da29 | 2014-04-19 16:45:36 +0200 | [diff] [blame] | 1952 | rsl_rlm_cause_name(rlm_cause), |
| 1953 | gsm_lchans_name(msg->lchan->state)); |
| 1954 | |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1955 | rll_indication(msg->lchan, rllh->link_id, BSC_RLLR_IND_ERR_IND); |
Harald Welte (local) | bd76cce | 2009-12-26 23:55:00 +0100 | [diff] [blame] | 1956 | |
Holger Hans Peter Freyther | 80abe25 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1957 | if (rlm_cause == RLL_CAUSE_T200_EXPIRED) { |
Alexander Couzens | d8aad3a | 2016-08-02 11:34:11 +0200 | [diff] [blame] | 1958 | rate_ctr_inc(&msg->lchan->ts->trx->bts->network->bsc_ctrs->ctr[BSC_CTR_CHAN_RLL_ERR]); |
Holger Hans Peter Freyther | 29eb19b | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 1959 | return rsl_rf_chan_release_err(msg->lchan); |
Holger Hans Peter Freyther | 27942e9 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1960 | } |
Harald Welte | 692f585 | 2009-07-04 09:40:05 +0200 | [diff] [blame] | 1961 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1962 | return 0; |
| 1963 | } |
| 1964 | |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1965 | static void rsl_handle_release(struct gsm_lchan *lchan) |
| 1966 | { |
Holger Hans Peter Freyther | 3fdf5b9 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1967 | int sapi; |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1968 | struct gsm_bts *bts; |
Holger Hans Peter Freyther | 3fdf5b9 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1969 | |
Holger Hans Peter Freyther | 701a647 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 1970 | /* |
| 1971 | * Maybe only one link/SAPI was releasd or the error handling |
| 1972 | * was activated. Just return now and let the other code handle |
| 1973 | * it. |
| 1974 | */ |
Holger Hans Peter Freyther | d26cbc8 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1975 | if (lchan->state != LCHAN_S_REL_REQ) |
Holger Hans Peter Freyther | 3fdf5b9 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1976 | return; |
| 1977 | |
| 1978 | for (sapi = 0; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 1979 | if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) |
| 1980 | continue; |
Harald Welte | 497aa98 | 2010-12-24 12:51:07 +0100 | [diff] [blame] | 1981 | LOGP(DRSL, LOGL_DEBUG, "%s waiting for SAPI=%d to be released.\n", |
Holger Hans Peter Freyther | 3fdf5b9 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1982 | gsm_lchan_name(lchan), sapi); |
| 1983 | return; |
| 1984 | } |
| 1985 | |
Holger Hans Peter Freyther | d26cbc8 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1986 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1987 | /* Stop T3109 and wait for T3111 before re-using the channel */ |
| 1988 | osmo_timer_del(&lchan->T3109); |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1989 | lchan->T3111.cb = t3111_expired; |
| 1990 | lchan->T3111.data = lchan; |
| 1991 | bts = lchan->ts->trx->bts; |
Pablo Neira Ayuso | 840ccf6 | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1992 | osmo_timer_schedule(&lchan->T3111, bts->network->T3111, 0); |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1993 | } |
| 1994 | |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1995 | /* ESTABLISH INDICATION, LOCATION AREA UPDATE REQUEST |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1996 | 0x02, 0x06, |
| 1997 | 0x01, 0x20, |
| 1998 | 0x02, 0x00, |
| 1999 | 0x0b, 0x00, 0x0f, 0x05, 0x08, ... */ |
| 2000 | |
| 2001 | static int abis_rsl_rx_rll(struct msgb *msg) |
| 2002 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2003 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2004 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
| 2005 | int rc = 0; |
| 2006 | char *ts_name; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2007 | uint8_t sapi = rllh->link_id & 7; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2008 | |
Neels Hofmeyr | 0781eb0 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 2009 | msg->lchan = lchan_lookup(sign_link->trx, rllh->chan_nr, |
| 2010 | "Abis RSL rx RLL: "); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 2011 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2012 | DEBUGP(DRLL, "%s SAPI=%u ", ts_name, sapi); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2013 | |
| 2014 | switch (rllh->c.msg_type) { |
| 2015 | case RSL_MT_DATA_IND: |
| 2016 | DEBUGPC(DRLL, "DATA INDICATION\n"); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 2017 | if (msgb_l2len(msg) > |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2018 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 2019 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 2020 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | 64994ce | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 2021 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2022 | } |
| 2023 | break; |
| 2024 | case RSL_MT_EST_IND: |
| 2025 | DEBUGPC(DRLL, "ESTABLISH INDICATION\n"); |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 2026 | /* lchan is established, stop T3101 */ |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 2027 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_MS; |
Pablo Neira Ayuso | 840ccf6 | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 2028 | osmo_timer_del(&msg->lchan->T3101); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 2029 | if (msgb_l2len(msg) > |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2030 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 2031 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 2032 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | 64994ce | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 2033 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2034 | } |
| 2035 | break; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 2036 | case RSL_MT_EST_CONF: |
Harald Welte | 6140217 | 2009-08-09 14:13:58 +0200 | [diff] [blame] | 2037 | DEBUGPC(DRLL, "ESTABLISH CONFIRM\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 2038 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_NET; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 2039 | rll_indication(msg->lchan, rllh->link_id, |
| 2040 | BSC_RLLR_IND_EST_CONF); |
| 2041 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2042 | case RSL_MT_REL_IND: |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 2043 | /* BTS informs us of having received DISC from MS */ |
Harald Welte | b660144 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 2044 | DEBUGPC(DRLL, "RELEASE INDICATION\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 2045 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 2046 | rll_indication(msg->lchan, rllh->link_id, |
| 2047 | BSC_RLLR_IND_REL_IND); |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 2048 | rsl_handle_release(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2049 | break; |
| 2050 | case RSL_MT_REL_CONF: |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 2051 | /* BTS informs us of having received UA from MS, |
| 2052 | * in response to DISC that we've sent earlier */ |
Harald Welte | b660144 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 2053 | DEBUGPC(DRLL, "RELEASE CONFIRMATION\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 2054 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 2055 | rsl_handle_release(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2056 | break; |
| 2057 | case RSL_MT_ERROR_IND: |
Neels Hofmeyr | 6fcad25 | 2016-07-26 19:39:43 +0200 | [diff] [blame] | 2058 | DEBUGPC(DRLL, "ERROR INDICATION\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2059 | rc = rsl_rx_rll_err_ind(msg); |
| 2060 | break; |
| 2061 | case RSL_MT_UNIT_DATA_IND: |
Neels Hofmeyr | 6fcad25 | 2016-07-26 19:39:43 +0200 | [diff] [blame] | 2062 | DEBUGPC(DRLL, "UNIT DATA INDICATION\n"); |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2063 | LOGP(DRLL, LOGL_NOTICE, "unimplemented Abis RLL message " |
| 2064 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2065 | break; |
| 2066 | default: |
Neels Hofmeyr | 6fcad25 | 2016-07-26 19:39:43 +0200 | [diff] [blame] | 2067 | DEBUGPC(DRLL, "UNKNOWN\n"); |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2068 | LOGP(DRLL, LOGL_NOTICE, "unknown Abis RLL message " |
| 2069 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2070 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2071 | return rc; |
| 2072 | } |
| 2073 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2074 | static uint8_t ipa_smod_s_for_lchan(struct gsm_lchan *lchan) |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2075 | { |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2076 | switch (lchan->tch_mode) { |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2077 | case GSM48_CMODE_SPEECH_V1: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2078 | switch (lchan->type) { |
| 2079 | case GSM_LCHAN_TCH_F: |
| 2080 | return 0x00; |
| 2081 | case GSM_LCHAN_TCH_H: |
| 2082 | return 0x03; |
| 2083 | default: |
| 2084 | break; |
| 2085 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2086 | break; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2087 | case GSM48_CMODE_SPEECH_EFR: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2088 | switch (lchan->type) { |
| 2089 | case GSM_LCHAN_TCH_F: |
| 2090 | return 0x01; |
| 2091 | /* there's no half-rate EFR */ |
| 2092 | default: |
| 2093 | break; |
| 2094 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2095 | break; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2096 | case GSM48_CMODE_SPEECH_AMR: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2097 | switch (lchan->type) { |
| 2098 | case GSM_LCHAN_TCH_F: |
| 2099 | return 0x02; |
| 2100 | case GSM_LCHAN_TCH_H: |
| 2101 | return 0x05; |
| 2102 | default: |
| 2103 | break; |
| 2104 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2105 | break; |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2106 | default: |
| 2107 | break; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2108 | } |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2109 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access speech mode for " |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2110 | "tch_mode == 0x%02x\n", lchan->tch_mode); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2111 | return 0; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2112 | } |
| 2113 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2114 | static uint8_t ipa_rtp_pt_for_lchan(struct gsm_lchan *lchan) |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2115 | { |
| 2116 | switch (lchan->tch_mode) { |
| 2117 | case GSM48_CMODE_SPEECH_V1: |
| 2118 | switch (lchan->type) { |
| 2119 | case GSM_LCHAN_TCH_F: |
| 2120 | return RTP_PT_GSM_FULL; |
| 2121 | case GSM_LCHAN_TCH_H: |
| 2122 | return RTP_PT_GSM_HALF; |
| 2123 | default: |
| 2124 | break; |
| 2125 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2126 | break; |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2127 | case GSM48_CMODE_SPEECH_EFR: |
| 2128 | switch (lchan->type) { |
| 2129 | case GSM_LCHAN_TCH_F: |
| 2130 | return RTP_PT_GSM_EFR; |
| 2131 | /* there's no half-rate EFR */ |
| 2132 | default: |
| 2133 | break; |
| 2134 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2135 | break; |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2136 | case GSM48_CMODE_SPEECH_AMR: |
| 2137 | switch (lchan->type) { |
| 2138 | case GSM_LCHAN_TCH_F: |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2139 | case GSM_LCHAN_TCH_H: |
Holger Hans Peter Freyther | d78bee8 | 2011-07-21 10:24:46 +0200 | [diff] [blame] | 2140 | return RTP_PT_AMR; |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2141 | default: |
| 2142 | break; |
| 2143 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2144 | break; |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2145 | default: |
| 2146 | break; |
| 2147 | } |
| 2148 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access rtp payload type for " |
| 2149 | "tch_mode == 0x%02x\n & lchan_type == %d", |
| 2150 | lchan->tch_mode, lchan->type); |
| 2151 | return 0; |
| 2152 | } |
| 2153 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2154 | /* ip.access specific RSL extensions */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2155 | static void ipac_parse_rtp(struct gsm_lchan *lchan, struct tlv_parsed *tv) |
| 2156 | { |
| 2157 | struct in_addr ip; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2158 | uint16_t port, conn_id; |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2159 | |
| 2160 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_IP)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2161 | ip.s_addr = tlvp_val32_unal(tv, RSL_IE_IPAC_LOCAL_IP); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2162 | DEBUGPC(DRSL, "LOCAL_IP=%s ", inet_ntoa(ip)); |
| 2163 | lchan->abis_ip.bound_ip = ntohl(ip.s_addr); |
| 2164 | } |
| 2165 | |
| 2166 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_PORT)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2167 | port = tlvp_val16_unal(tv, RSL_IE_IPAC_LOCAL_PORT); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2168 | port = ntohs(port); |
| 2169 | DEBUGPC(DRSL, "LOCAL_PORT=%u ", port); |
| 2170 | lchan->abis_ip.bound_port = port; |
| 2171 | } |
| 2172 | |
| 2173 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_CONN_ID)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2174 | conn_id = tlvp_val16_unal(tv, RSL_IE_IPAC_CONN_ID); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2175 | conn_id = ntohs(conn_id); |
| 2176 | DEBUGPC(DRSL, "CON_ID=%u ", conn_id); |
| 2177 | lchan->abis_ip.conn_id = conn_id; |
| 2178 | } |
| 2179 | |
| 2180 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_RTP_PAYLOAD2)) { |
| 2181 | lchan->abis_ip.rtp_payload2 = |
| 2182 | *TLVP_VAL(tv, RSL_IE_IPAC_RTP_PAYLOAD2); |
| 2183 | DEBUGPC(DRSL, "RTP_PAYLOAD2=0x%02x ", |
| 2184 | lchan->abis_ip.rtp_payload2); |
| 2185 | } |
| 2186 | |
| 2187 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_SPEECH_MODE)) { |
| 2188 | lchan->abis_ip.speech_mode = |
| 2189 | *TLVP_VAL(tv, RSL_IE_IPAC_SPEECH_MODE); |
| 2190 | DEBUGPC(DRSL, "speech_mode=0x%02x ", |
| 2191 | lchan->abis_ip.speech_mode); |
| 2192 | } |
| 2193 | |
| 2194 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_IP)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2195 | ip.s_addr = tlvp_val32_unal(tv, RSL_IE_IPAC_REMOTE_IP); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2196 | DEBUGPC(DRSL, "REMOTE_IP=%s ", inet_ntoa(ip)); |
| 2197 | lchan->abis_ip.connect_ip = ntohl(ip.s_addr); |
| 2198 | } |
| 2199 | |
| 2200 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_PORT)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2201 | port = tlvp_val16_unal(tv, RSL_IE_IPAC_REMOTE_PORT); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2202 | port = ntohs(port); |
| 2203 | DEBUGPC(DRSL, "REMOTE_PORT=%u ", port); |
| 2204 | lchan->abis_ip.connect_port = port; |
| 2205 | } |
| 2206 | } |
| 2207 | |
Harald Welte | 9a696d7 | 2013-02-03 12:06:58 +0100 | [diff] [blame] | 2208 | /*! \brief Issue IPA RSL CRCX to configure RTP on BTS side |
| 2209 | * \param[in] lchan Logical Channel for which we issue CRCX |
| 2210 | */ |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2211 | int rsl_ipacc_crcx(struct gsm_lchan *lchan) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2212 | { |
| 2213 | struct msgb *msg = rsl_msgb_alloc(); |
| 2214 | struct abis_rsl_dchan_hdr *dh; |
| 2215 | |
| 2216 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2217 | init_dchan_hdr(dh, RSL_MT_IPAC_CRCX); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2218 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 2219 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2220 | |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2221 | /* 0x1- == receive-only, 0x-1 == EFR codec */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2222 | lchan->abis_ip.speech_mode = 0x10 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2223 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2224 | msgb_tv_put(msg, RSL_IE_IPAC_SPEECH_MODE, lchan->abis_ip.speech_mode); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2225 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD, lchan->abis_ip.rtp_payload); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2226 | |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2227 | DEBUGP(DRSL, "%s IPAC_BIND speech_mode=0x%02x RTP_PAYLOAD=%d\n", |
| 2228 | gsm_lchan_name(lchan), lchan->abis_ip.speech_mode, |
| 2229 | lchan->abis_ip.rtp_payload); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2230 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2231 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2232 | |
| 2233 | return abis_rsl_sendmsg(msg); |
| 2234 | } |
| 2235 | |
Harald Welte | 9a696d7 | 2013-02-03 12:06:58 +0100 | [diff] [blame] | 2236 | /*! \brief Issue IPA RSL MDCX to configure MGW-side of RTP |
| 2237 | * \param[in] lchan Logical Channel for which we issue MDCX |
| 2238 | * \param[in] ip Remote (MGW) IP address for RTP |
| 2239 | * \param[in] port Remote (MGW) UDP port number for RTP |
| 2240 | * \param[in] rtp_payload2 Contents of RTP PAYLOAD 2 IE |
| 2241 | */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2242 | int rsl_ipacc_mdcx(struct gsm_lchan *lchan, uint32_t ip, uint16_t port, |
| 2243 | uint8_t rtp_payload2) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2244 | { |
| 2245 | struct msgb *msg = rsl_msgb_alloc(); |
| 2246 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2247 | uint32_t *att_ip; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2248 | struct in_addr ia; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2249 | |
| 2250 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2251 | init_dchan_hdr(dh, RSL_MT_IPAC_MDCX); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2252 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 2253 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2254 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2255 | /* we need to store these now as MDCX_ACK does not return them :( */ |
| 2256 | lchan->abis_ip.rtp_payload2 = rtp_payload2; |
| 2257 | lchan->abis_ip.connect_port = port; |
| 2258 | lchan->abis_ip.connect_ip = ip; |
| 2259 | |
Harald Welte | fb4a9e9 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 2260 | /* 0x0- == both directions, 0x-1 == EFR codec */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2261 | lchan->abis_ip.speech_mode = 0x00 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2262 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | fb4a9e9 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 2263 | |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2264 | ia.s_addr = htonl(ip); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2265 | DEBUGP(DRSL, "%s IPAC_MDCX IP=%s PORT=%d RTP_PAYLOAD=%d RTP_PAYLOAD2=%d " |
| 2266 | "CONN_ID=%d speech_mode=0x%02x\n", gsm_lchan_name(lchan), |
| 2267 | inet_ntoa(ia), port, lchan->abis_ip.rtp_payload, rtp_payload2, |
| 2268 | lchan->abis_ip.conn_id, lchan->abis_ip.speech_mode); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2269 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2270 | msgb_tv16_put(msg, RSL_IE_IPAC_CONN_ID, lchan->abis_ip.conn_id); |
| 2271 | msgb_v_put(msg, RSL_IE_IPAC_REMOTE_IP); |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2272 | att_ip = (uint32_t *) msgb_put(msg, sizeof(ip)); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2273 | *att_ip = ia.s_addr; |
| 2274 | msgb_tv16_put(msg, RSL_IE_IPAC_REMOTE_PORT, port); |
| 2275 | msgb_tv_put(msg, RSL_IE_IPAC_SPEECH_MODE, lchan->abis_ip.speech_mode); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2276 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD, lchan->abis_ip.rtp_payload); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2277 | if (rtp_payload2) |
| 2278 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD2, rtp_payload2); |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2279 | |
| 2280 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2281 | |
| 2282 | return abis_rsl_sendmsg(msg); |
| 2283 | } |
| 2284 | |
Harald Welte | 9947d9f | 2009-12-20 16:51:09 +0100 | [diff] [blame] | 2285 | /* tell BTS to connect RTP stream to our local RTP socket */ |
| 2286 | int rsl_ipacc_mdcx_to_rtpsock(struct gsm_lchan *lchan) |
| 2287 | { |
| 2288 | struct rtp_socket *rs = lchan->abis_ip.rtp_socket; |
| 2289 | int rc; |
| 2290 | |
| 2291 | rc = rsl_ipacc_mdcx(lchan, ntohl(rs->rtp.sin_local.sin_addr.s_addr), |
| 2292 | ntohs(rs->rtp.sin_local.sin_port), |
| 2293 | /* FIXME: use RTP payload of bound socket, not BTS*/ |
| 2294 | lchan->abis_ip.rtp_payload2); |
| 2295 | |
| 2296 | return rc; |
| 2297 | } |
| 2298 | |
Harald Welte | 6f40df0 | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 2299 | int rsl_ipacc_pdch_activate(struct gsm_bts_trx_ts *ts, int act) |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2300 | { |
| 2301 | struct msgb *msg = rsl_msgb_alloc(); |
| 2302 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2303 | uint8_t msg_type; |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2304 | |
Neels Hofmeyr | 1d9a3aa | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 2305 | if (ts->flags & TS_F_PDCH_PENDING_MASK) { |
| 2306 | LOGP(DRSL, LOGL_ERROR, |
| 2307 | "%s PDCH %s requested, but a PDCH%s%s is still pending\n", |
| 2308 | gsm_ts_name(ts), |
| 2309 | act ? "ACT" : "DEACT", |
| 2310 | ts->flags & TS_F_PDCH_ACT_PENDING? " ACT" : "", |
| 2311 | ts->flags & TS_F_PDCH_DEACT_PENDING? " DEACT" : ""); |
| 2312 | return -EINVAL; |
| 2313 | } |
| 2314 | |
| 2315 | if (act){ |
Neels Hofmeyr | 31b2630 | 2016-07-06 14:39:04 +0200 | [diff] [blame] | 2316 | /* Callers should heed the GPRS mode. */ |
| 2317 | OSMO_ASSERT(ts->trx->bts->gprs.mode != BTS_GPRS_NONE); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2318 | msg_type = RSL_MT_IPAC_PDCH_ACT; |
Neels Hofmeyr | 1d9a3aa | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 2319 | ts->flags |= TS_F_PDCH_ACT_PENDING; |
| 2320 | } else { |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2321 | msg_type = RSL_MT_IPAC_PDCH_DEACT; |
Neels Hofmeyr | 1d9a3aa | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 2322 | ts->flags |= TS_F_PDCH_DEACT_PENDING; |
| 2323 | } |
| 2324 | /* TODO add timeout to cancel PDCH DE/ACT */ |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2325 | |
| 2326 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2327 | init_dchan_hdr(dh, msg_type); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2328 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Neels Hofmeyr | b597811 | 2016-07-18 23:43:44 +0200 | [diff] [blame] | 2329 | dh->chan_nr = gsm_pchan2chan_nr(GSM_PCHAN_PDCH, ts->nr, 0); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2330 | |
Neels Hofmeyr | 6b27230 | 2016-05-31 17:51:41 +0200 | [diff] [blame] | 2331 | DEBUGP(DRSL, "%s IPAC PDCH %sACT\n", gsm_ts_name(ts), |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2332 | act ? "" : "DE"); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2333 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2334 | msg->dst = ts->trx->rsl_link; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2335 | |
| 2336 | return abis_rsl_sendmsg(msg); |
| 2337 | } |
| 2338 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2339 | static int abis_rsl_rx_ipacc_crcx_ack(struct msgb *msg) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2340 | { |
| 2341 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 2342 | struct tlv_parsed tv; |
Harald Welte | 8750421 | 2009-12-02 01:56:49 +0530 | [diff] [blame] | 2343 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2344 | |
| 2345 | /* the BTS has acknowledged a local bind, it now tells us the IP |
| 2346 | * address and port number to which it has bound the given logical |
| 2347 | * channel */ |
| 2348 | |
| 2349 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 2350 | if (!TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_PORT) || |
| 2351 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_IP) || |
Harald Welte | b949895 | 2009-07-12 09:45:05 +0200 | [diff] [blame] | 2352 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_CONN_ID)) { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2353 | LOGP(DRSL, LOGL_NOTICE, "mandatory IE missing"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2354 | return -EINVAL; |
| 2355 | } |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 2356 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2357 | ipac_parse_rtp(lchan, &tv); |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 2358 | |
Pablo Neira Ayuso | ef717c6 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 2359 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_CRCX_ACK, msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2360 | |
| 2361 | return 0; |
| 2362 | } |
| 2363 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2364 | static int abis_rsl_rx_ipacc_mdcx_ack(struct msgb *msg) |
| 2365 | { |
| 2366 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 2367 | struct tlv_parsed tv; |
| 2368 | struct gsm_lchan *lchan = msg->lchan; |
| 2369 | |
| 2370 | /* the BTS has acknowledged a remote connect request and |
| 2371 | * it now tells us the IP address and port number to which it has |
| 2372 | * connected the given logical channel */ |
| 2373 | |
| 2374 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 2375 | ipac_parse_rtp(lchan, &tv); |
Pablo Neira Ayuso | ef717c6 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 2376 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_MDCX_ACK, msg->lchan); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2377 | |
| 2378 | return 0; |
| 2379 | } |
| 2380 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2381 | static int abis_rsl_rx_ipacc_dlcx_ind(struct msgb *msg) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2382 | { |
| 2383 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 2384 | struct tlv_parsed tv; |
| 2385 | |
| 2386 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2387 | |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 2388 | if (TLVP_PRESENT(&tv, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2389 | print_rsl_cause(LOGL_DEBUG, TLVP_VAL(&tv, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 2390 | TLVP_LEN(&tv, RSL_IE_CAUSE)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2391 | |
Pablo Neira Ayuso | ef717c6 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 2392 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_DLCX_IND, msg->lchan); |
Harald Welte | ba4e58d | 2009-07-28 18:02:05 +0200 | [diff] [blame] | 2393 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2394 | return 0; |
| 2395 | } |
| 2396 | |
| 2397 | static int abis_rsl_rx_ipacc(struct msgb *msg) |
| 2398 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2399 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2400 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2401 | char *ts_name; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2402 | int rc = 0; |
| 2403 | |
Neels Hofmeyr | 0781eb0 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 2404 | msg->lchan = lchan_lookup(sign_link->trx, rllh->chan_nr, |
| 2405 | "Abis RSL rx IPACC: "); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 2406 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2407 | |
| 2408 | switch (rllh->c.msg_type) { |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2409 | case RSL_MT_IPAC_CRCX_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2410 | DEBUGP(DRSL, "%s IPAC_CRCX_ACK ", ts_name); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2411 | rc = abis_rsl_rx_ipacc_crcx_ack(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2412 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2413 | case RSL_MT_IPAC_CRCX_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2414 | /* somehow the BTS was unable to bind the lchan to its local |
| 2415 | * port?!? */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2416 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_CRCX_NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2417 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2418 | case RSL_MT_IPAC_MDCX_ACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2419 | /* the BTS tells us that a connect operation was successful */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2420 | DEBUGP(DRSL, "%s IPAC_MDCX_ACK ", ts_name); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2421 | rc = abis_rsl_rx_ipacc_mdcx_ack(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2422 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2423 | case RSL_MT_IPAC_MDCX_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2424 | /* somehow the BTS was unable to connect the lchan to a remote |
| 2425 | * port */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2426 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_MDCX_NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2427 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2428 | case RSL_MT_IPAC_DLCX_IND: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2429 | DEBUGP(DRSL, "%s IPAC_DLCX_IND ", ts_name); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2430 | rc = abis_rsl_rx_ipacc_dlcx_ind(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2431 | break; |
| 2432 | default: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2433 | LOGP(DRSL, LOGL_NOTICE, "Unknown ip.access msg_type 0x%02x\n", |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2434 | rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2435 | break; |
| 2436 | } |
| 2437 | DEBUGPC(DRSL, "\n"); |
| 2438 | |
| 2439 | return rc; |
| 2440 | } |
| 2441 | |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2442 | int dyn_ts_switchover_start(struct gsm_bts_trx_ts *ts, |
Neels Hofmeyr | b763811 | 2016-07-23 20:08:41 +0200 | [diff] [blame] | 2443 | enum gsm_phys_chan_config to_pchan) |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2444 | { |
| 2445 | int ss; |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2446 | int rc = -EIO; |
| 2447 | |
| 2448 | OSMO_ASSERT(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH); |
| 2449 | DEBUGP(DRSL, "%s starting switchover to %s\n", |
| 2450 | gsm_ts_and_pchan_name(ts), gsm_pchan_name(to_pchan)); |
| 2451 | |
| 2452 | if (ts->dyn.pchan_is != ts->dyn.pchan_want) { |
| 2453 | LOGP(DRSL, LOGL_ERROR, |
| 2454 | "%s: Attempt to switch dynamic channel to %s," |
| 2455 | " but is already in switchover.\n", |
| 2456 | gsm_ts_and_pchan_name(ts), |
| 2457 | gsm_pchan_name(to_pchan)); |
| 2458 | return ts->dyn.pchan_want == to_pchan? 0 : -EAGAIN; |
| 2459 | } |
| 2460 | |
| 2461 | if (ts->dyn.pchan_is == to_pchan) { |
| 2462 | LOGP(DRSL, LOGL_INFO, |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2463 | "%s %s Already is in %s mode, cannot switchover.\n", |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2464 | gsm_ts_name(ts), gsm_pchan_name(ts->pchan), |
| 2465 | gsm_pchan_name(to_pchan)); |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2466 | return -EINVAL; |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2467 | } |
| 2468 | |
| 2469 | /* Paranoia: let's make sure all is indeed released. */ |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2470 | for (ss = 0; ss < ts_subslots(ts); ss++) { |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2471 | struct gsm_lchan *lc = &ts->lchan[ss]; |
| 2472 | if (lc->state != LCHAN_S_NONE) { |
| 2473 | LOGP(DRSL, LOGL_ERROR, |
| 2474 | "%s Attempt to switch dynamic channel to %s," |
| 2475 | " but is not fully released.\n", |
| 2476 | gsm_ts_and_pchan_name(ts), |
| 2477 | gsm_pchan_name(to_pchan)); |
| 2478 | return -EAGAIN; |
| 2479 | } |
| 2480 | } |
| 2481 | |
| 2482 | /* Record that we're busy switching. */ |
| 2483 | ts->dyn.pchan_want = to_pchan; |
| 2484 | |
| 2485 | /* |
| 2486 | * To switch from PDCH, we need to initiate the release from the BSC |
| 2487 | * side. dyn_ts_switchover_continue() will be called from |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2488 | * rsl_rx_rf_chan_rel_ack(). PDCH is always on lchan[0]. |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2489 | */ |
| 2490 | if (ts->dyn.pchan_is == GSM_PCHAN_PDCH) { |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2491 | rsl_lchan_set_state(ts->lchan, LCHAN_S_REL_REQ); |
| 2492 | rc = rsl_rf_chan_release(ts->lchan, 0, SACCH_NONE); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2493 | if (rc) { |
| 2494 | LOGP(DRSL, LOGL_ERROR, |
| 2495 | "%s RSL RF Chan Release failed\n", |
| 2496 | gsm_ts_and_pchan_name(ts)); |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2497 | return dyn_ts_switchover_failed(ts, rc); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2498 | } |
| 2499 | return 0; |
| 2500 | } |
| 2501 | |
| 2502 | /* |
| 2503 | * To switch from TCH/F and TCH/H pchans, this has been called from |
| 2504 | * rsl_rx_rf_chan_rel_ack(), i.e. release is complete. Go ahead and |
| 2505 | * activate as new type. This will always be PDCH. |
| 2506 | */ |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2507 | return dyn_ts_switchover_continue(ts); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2508 | } |
| 2509 | |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2510 | static int dyn_ts_switchover_continue(struct gsm_bts_trx_ts *ts) |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2511 | { |
| 2512 | int rc; |
| 2513 | uint8_t act_type; |
| 2514 | uint8_t ho_ref; |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2515 | int ss; |
| 2516 | struct gsm_lchan *lchan; |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2517 | |
| 2518 | OSMO_ASSERT(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH); |
| 2519 | DEBUGP(DRSL, "%s switchover: release complete," |
| 2520 | " activating new pchan type\n", |
| 2521 | gsm_ts_and_pchan_name(ts)); |
| 2522 | |
| 2523 | if (ts->dyn.pchan_is == ts->dyn.pchan_want) { |
| 2524 | LOGP(DRSL, LOGL_ERROR, |
| 2525 | "%s Requested to switchover dynamic channel to the" |
| 2526 | " same type it is already in.\n", |
| 2527 | gsm_ts_and_pchan_name(ts)); |
| 2528 | return 0; |
| 2529 | } |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2530 | |
| 2531 | for (ss = 0; ss < ts_subslots(ts); ss++) { |
| 2532 | lchan = &ts->lchan[ss]; |
| 2533 | if (lchan->rqd_ref) { |
| 2534 | LOGP(DRSL, LOGL_ERROR, |
| 2535 | "%s During dyn TS switchover, expecting no" |
| 2536 | " Request Reference to be pending. Discarding!\n", |
| 2537 | gsm_lchan_name(lchan)); |
| 2538 | talloc_free(lchan->rqd_ref); |
| 2539 | lchan->rqd_ref = NULL; |
| 2540 | } |
| 2541 | } |
| 2542 | |
| 2543 | /* |
| 2544 | * When switching pchan modes, all lchans are unused. So always |
| 2545 | * activate whatever wants to be activated on the first lchan. (We |
| 2546 | * wouldn't remember to use lchan[1] across e.g. a PDCH deact anyway) |
| 2547 | */ |
| 2548 | lchan = ts->lchan; |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2549 | |
| 2550 | /* |
| 2551 | * For TCH/x, the lchan->type has been set in lchan_alloc(), but it may |
| 2552 | * have been lost during channel release due to dynamic switchover. |
| 2553 | * |
| 2554 | * For PDCH, the lchan->type will actually remain NONE. |
| 2555 | * TODO: set GSM_LCHAN_PDTCH? |
| 2556 | */ |
| 2557 | switch (ts->dyn.pchan_want) { |
| 2558 | case GSM_PCHAN_TCH_F: |
| 2559 | lchan->type = GSM_LCHAN_TCH_F; |
| 2560 | break; |
| 2561 | case GSM_PCHAN_TCH_H: |
| 2562 | lchan->type = GSM_LCHAN_TCH_H; |
| 2563 | break; |
| 2564 | case GSM_PCHAN_PDCH: |
| 2565 | lchan->type = GSM_LCHAN_NONE; |
| 2566 | break; |
| 2567 | default: |
| 2568 | LOGP(DRSL, LOGL_ERROR, |
| 2569 | "%s Invalid target pchan for dynamic TS\n", |
| 2570 | gsm_ts_and_pchan_name(ts)); |
| 2571 | } |
| 2572 | |
| 2573 | act_type = (ts->dyn.pchan_want == GSM_PCHAN_PDCH) |
| 2574 | ? RSL_ACT_OSMO_PDCH |
| 2575 | : lchan->dyn.act_type; |
| 2576 | ho_ref = (ts->dyn.pchan_want == GSM_PCHAN_PDCH) |
| 2577 | ? 0 |
| 2578 | : lchan->dyn.ho_ref; |
| 2579 | |
| 2580 | /* Fetch the rqd_ref back from before switchover started. */ |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2581 | lchan->rqd_ref = lchan->dyn.rqd_ref; |
| 2582 | lchan->rqd_ta = lchan->dyn.rqd_ta; |
| 2583 | lchan->dyn.rqd_ref = NULL; |
| 2584 | lchan->dyn.rqd_ta = 0; |
| 2585 | |
Neels Hofmeyr | b6cf05e | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2586 | /* During switchover, we have received a release ack, which means that |
| 2587 | * the act_timer has been stopped. Start the timer again so we mark |
| 2588 | * this channel broken if the activation ack comes too late. */ |
| 2589 | lchan->act_timer.cb = lchan_act_tmr_cb; |
| 2590 | lchan->act_timer.data = lchan; |
| 2591 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 2592 | |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2593 | rc = rsl_chan_activate_lchan(lchan, act_type, ho_ref); |
| 2594 | if (rc) { |
| 2595 | LOGP(DRSL, LOGL_ERROR, |
| 2596 | "%s RSL Chan Activate failed\n", |
| 2597 | gsm_ts_and_pchan_name(ts)); |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2598 | return dyn_ts_switchover_failed(ts, rc); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2599 | } |
| 2600 | return 0; |
| 2601 | } |
| 2602 | |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2603 | static int dyn_ts_switchover_failed(struct gsm_bts_trx_ts *ts, int rc) |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2604 | { |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2605 | ts->dyn.pchan_want = ts->dyn.pchan_is; |
| 2606 | LOGP(DRSL, LOGL_ERROR, "%s Error %d during dynamic channel switchover." |
| 2607 | " Going back to previous pchan.\n", gsm_ts_and_pchan_name(ts), |
| 2608 | rc); |
| 2609 | return rc; |
| 2610 | } |
| 2611 | |
| 2612 | static void dyn_ts_switchover_complete(struct gsm_lchan *lchan) |
| 2613 | { |
| 2614 | enum gsm_phys_chan_config pchan_act; |
| 2615 | enum gsm_phys_chan_config pchan_was; |
| 2616 | struct gsm_bts_trx_ts *ts = lchan->ts; |
| 2617 | |
| 2618 | OSMO_ASSERT(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH); |
| 2619 | |
| 2620 | pchan_act = pchan_for_lchant(lchan->type); |
| 2621 | /* |
| 2622 | * Paranoia: do the types match? |
| 2623 | * In case of errors: we've received an act ack already, so what to do |
| 2624 | * about it? Logging the error should suffice for now. |
| 2625 | */ |
| 2626 | if (pchan_act != ts->dyn.pchan_want) |
| 2627 | LOGP(DRSL, LOGL_ERROR, |
| 2628 | "%s Requested transition does not match lchan type %s\n", |
| 2629 | gsm_ts_and_pchan_name(ts), |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2630 | gsm_lchant_name(lchan->type)); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2631 | |
| 2632 | pchan_was = ts->dyn.pchan_is; |
| 2633 | ts->dyn.pchan_is = ts->dyn.pchan_want = pchan_act; |
| 2634 | |
Neels Hofmeyr | ba1eab2 | 2016-08-24 14:42:58 +0200 | [diff] [blame] | 2635 | if (pchan_was != ts->dyn.pchan_is) |
| 2636 | LOGP(DRSL, LOGL_INFO, "%s switchover from %s complete.\n", |
| 2637 | gsm_ts_and_pchan_name(ts), gsm_pchan_name(pchan_was)); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2638 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2639 | |
| 2640 | /* Entry-point where L2 RSL from BTS enters */ |
| 2641 | int abis_rsl_rcvmsg(struct msgb *msg) |
| 2642 | { |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2643 | struct abis_rsl_common_hdr *rslh; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2644 | int rc = 0; |
| 2645 | |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2646 | if (!msg) { |
| 2647 | DEBUGP(DRSL, "Empty RSL msg?..\n"); |
| 2648 | return -1; |
| 2649 | } |
| 2650 | |
| 2651 | if (msgb_l2len(msg) < sizeof(*rslh)) { |
| 2652 | DEBUGP(DRSL, "Truncated RSL message with l2len: %u\n", msgb_l2len(msg)); |
Harald Welte | ce80726 | 2012-05-31 20:22:34 +0200 | [diff] [blame] | 2653 | msgb_free(msg); |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2654 | return -1; |
| 2655 | } |
| 2656 | |
| 2657 | rslh = msgb_l2(msg); |
| 2658 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2659 | switch (rslh->msg_discr & 0xfe) { |
| 2660 | case ABIS_RSL_MDISC_RLL: |
| 2661 | rc = abis_rsl_rx_rll(msg); |
| 2662 | break; |
| 2663 | case ABIS_RSL_MDISC_DED_CHAN: |
| 2664 | rc = abis_rsl_rx_dchan(msg); |
| 2665 | break; |
| 2666 | case ABIS_RSL_MDISC_COM_CHAN: |
| 2667 | rc = abis_rsl_rx_cchan(msg); |
| 2668 | break; |
| 2669 | case ABIS_RSL_MDISC_TRX: |
| 2670 | rc = abis_rsl_rx_trx(msg); |
| 2671 | break; |
| 2672 | case ABIS_RSL_MDISC_LOC: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2673 | LOGP(DRSL, LOGL_NOTICE, "unimplemented RSL msg disc 0x%02x\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2674 | rslh->msg_discr); |
| 2675 | break; |
| 2676 | case ABIS_RSL_MDISC_IPACCESS: |
| 2677 | rc = abis_rsl_rx_ipacc(msg); |
| 2678 | break; |
| 2679 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2680 | LOGP(DRSL, LOGL_NOTICE, "unknown RSL message discriminator " |
| 2681 | "0x%02x\n", rslh->msg_discr); |
Harald Welte | ce80726 | 2012-05-31 20:22:34 +0200 | [diff] [blame] | 2682 | rc = -EINVAL; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2683 | } |
| 2684 | msgb_free(msg); |
| 2685 | return rc; |
| 2686 | } |
| 2687 | |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2688 | int rsl_sms_cb_command(struct gsm_bts *bts, uint8_t chan_number, |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2689 | struct rsl_ie_cb_cmd_type cb_command, |
| 2690 | const uint8_t *data, int len) |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2691 | { |
| 2692 | struct abis_rsl_dchan_hdr *dh; |
| 2693 | struct msgb *cb_cmd; |
| 2694 | |
| 2695 | cb_cmd = rsl_msgb_alloc(); |
| 2696 | if (!cb_cmd) |
| 2697 | return -1; |
| 2698 | |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2699 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(cb_cmd, sizeof(*dh)); |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2700 | init_dchan_hdr(dh, RSL_MT_SMS_BC_CMD); |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2701 | dh->c.msg_discr = ABIS_RSL_MDISC_COM_CHAN; |
| 2702 | dh->chan_nr = chan_number; /* TODO: check the chan config */ |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2703 | |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2704 | msgb_tv_put(cb_cmd, RSL_IE_CB_CMD_TYPE, *(uint8_t*)&cb_command); |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2705 | msgb_tlv_put(cb_cmd, RSL_IE_SMSCB_MSG, len, data); |
| 2706 | |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2707 | cb_cmd->dst = bts->c0->rsl_link; |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2708 | |
| 2709 | return abis_rsl_sendmsg(cb_cmd); |
| 2710 | } |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2711 | |
| 2712 | int rsl_nokia_si_begin(struct gsm_bts_trx *trx) |
| 2713 | { |
| 2714 | struct abis_rsl_common_hdr *ch; |
| 2715 | struct msgb *msg = rsl_msgb_alloc(); |
| 2716 | |
| 2717 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2718 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 2719 | ch->msg_type = 0x40; /* Nokia SI Begin */ |
| 2720 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2721 | msg->dst = trx->rsl_link; |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2722 | |
| 2723 | return abis_rsl_sendmsg(msg); |
| 2724 | } |
| 2725 | |
| 2726 | int rsl_nokia_si_end(struct gsm_bts_trx *trx) |
| 2727 | { |
| 2728 | struct abis_rsl_common_hdr *ch; |
| 2729 | struct msgb *msg = rsl_msgb_alloc(); |
| 2730 | |
| 2731 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2732 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 2733 | ch->msg_type = 0x41; /* Nokia SI End */ |
| 2734 | |
| 2735 | msgb_tv_put(msg, 0xFD, 0x00); /* Nokia Pagemode Info, No paging reorganisation required */ |
| 2736 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2737 | msg->dst = trx->rsl_link; |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2738 | |
| 2739 | return abis_rsl_sendmsg(msg); |
| 2740 | } |
| 2741 | |
| 2742 | int rsl_bs_power_control(struct gsm_bts_trx *trx, uint8_t channel, uint8_t reduction) |
| 2743 | { |
| 2744 | struct abis_rsl_common_hdr *ch; |
| 2745 | struct msgb *msg = rsl_msgb_alloc(); |
| 2746 | |
| 2747 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2748 | ch->msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
| 2749 | ch->msg_type = RSL_MT_BS_POWER_CONTROL; |
| 2750 | |
| 2751 | msgb_tv_put(msg, RSL_IE_CHAN_NR, channel); |
| 2752 | msgb_tv_put(msg, RSL_IE_BS_POWER, reduction); /* reduction in 2dB steps */ |
| 2753 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2754 | msg->dst = trx->rsl_link; |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2755 | |
| 2756 | return abis_rsl_sendmsg(msg); |
| 2757 | } |
Holger Hans Peter Freyther | e38af68 | 2011-12-27 22:24:17 +0100 | [diff] [blame] | 2758 | |
| 2759 | /** |
| 2760 | * Release all allocated SAPIs starting from @param start and |
| 2761 | * release them with the given release mode. Once the release |
| 2762 | * confirmation arrives it will be attempted to release the |
| 2763 | * the RF channel. |
| 2764 | */ |
| 2765 | int rsl_release_sapis_from(struct gsm_lchan *lchan, int start, |
| 2766 | enum rsl_rel_mode release_mode) |
| 2767 | { |
| 2768 | int no_sapi = 1; |
| 2769 | int sapi; |
| 2770 | |
| 2771 | for (sapi = start; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 2772 | uint8_t link_id; |
| 2773 | if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) |
| 2774 | continue; |
| 2775 | |
| 2776 | link_id = sapi; |
| 2777 | if (lchan->type == GSM_LCHAN_TCH_F || lchan->type == GSM_LCHAN_TCH_H) |
| 2778 | link_id |= 0x40; |
| 2779 | rsl_release_request(lchan, link_id, release_mode); |
| 2780 | no_sapi = 0; |
| 2781 | } |
| 2782 | |
| 2783 | return no_sapi; |
| 2784 | } |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 2785 | |
| 2786 | int rsl_start_t3109(struct gsm_lchan *lchan) |
| 2787 | { |
| 2788 | struct gsm_bts *bts = lchan->ts->trx->bts; |
| 2789 | |
| 2790 | /* Disabled, mostly legacy code */ |
| 2791 | if (bts->network->T3109 == 0) |
| 2792 | return -1; |
| 2793 | |
| 2794 | lchan->T3109.cb = t3109_expired; |
| 2795 | lchan->T3109.data = lchan; |
| 2796 | osmo_timer_schedule(&lchan->T3109, bts->network->T3109, 0); |
| 2797 | return 0; |
| 2798 | } |
Holger Hans Peter Freyther | c63cb86 | 2012-12-25 23:45:14 +0100 | [diff] [blame] | 2799 | |
| 2800 | /** |
| 2801 | * \brief directly RF Channel Release the lchan |
| 2802 | * |
| 2803 | * When no SAPI was allocated, directly release the logical channel. This |
| 2804 | * should only be called from chan_alloc.c on channel release handling. In |
| 2805 | * case no SAPI was established the RF Channel can be directly released, |
| 2806 | */ |
| 2807 | int rsl_direct_rf_release(struct gsm_lchan *lchan) |
| 2808 | { |
| 2809 | int i; |
| 2810 | for (i = 0; i < ARRAY_SIZE(lchan->sapis); ++i) { |
| 2811 | if (lchan->sapis[i] != LCHAN_SAPI_UNUSED) { |
| 2812 | LOGP(DRSL, LOGL_ERROR, "%s SAPI(%d) still allocated.\n", |
| 2813 | gsm_lchan_name(lchan), i); |
| 2814 | return -1; |
| 2815 | } |
| 2816 | } |
| 2817 | |
| 2818 | /* Now release it */ |
| 2819 | return rsl_rf_chan_release(lchan, 0, SACCH_NONE); |
| 2820 | } |