Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1 | /* GSM Radio Signalling Link messages on the A-bis interface |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2 | * 3GPP TS 08.58 version 8.6.0 Release 1999 / ETSI TS 100 596 V8.6.0 */ |
| 3 | |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 4 | /* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org> |
Holger Hans Peter Freyther | 8582535 | 2011-12-27 22:24:17 +0100 | [diff] [blame] | 5 | * (C) 2012 by Holger Hans Peter Freyther |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 6 | * |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 7 | * All Rights Reserved |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
Harald Welte | 9af6ddf | 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 | 52b1f98 | 2008-12-23 20:25:15 +0000 | [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 | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 17 | * GNU Affero General Public License for more details. |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 18 | * |
Harald Welte | 9af6ddf | 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 | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <stdio.h> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 25 | #include <stdlib.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 26 | #include <errno.h> |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 27 | #include <netinet/in.h> |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 28 | #include <arpa/inet.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 29 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 30 | #include <openbsc/gsm_data.h> |
| 31 | #include <openbsc/gsm_04_08.h> |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 32 | #include <osmocom/gsm/gsm_utils.h> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 33 | #include <openbsc/abis_rsl.h> |
| 34 | #include <openbsc/chan_alloc.h> |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 35 | #include <openbsc/bsc_rll.h> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 36 | #include <openbsc/debug.h> |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 37 | #include <osmocom/gsm/tlv.h> |
Max | c08ee71 | 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> |
Holger Freyther | 392209c | 2009-02-10 00:06:19 +0000 | [diff] [blame] | 40 | #include <openbsc/paging.h> |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 41 | #include <openbsc/signal.h> |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 42 | #include <openbsc/meas_rep.h> |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 43 | #include <openbsc/rtp_proxy.h> |
Pablo Neira Ayuso | ed5cacb | 2011-08-17 22:44:07 +0200 | [diff] [blame] | 44 | #include <osmocom/abis/e1_input.h> |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 45 | #include <osmocom/gsm/rsl.h> |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 46 | #include <osmocom/core/talloc.h> |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 47 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 48 | #define RSL_ALLOC_SIZE 1024 |
| 49 | #define RSL_ALLOC_HEADROOM 128 |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 50 | |
Holger Hans Peter Freyther | b348939 | 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 | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 56 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan); |
Holger Hans Peter Freyther | f040506 | 2014-04-06 12:21:05 +0200 | [diff] [blame] | 57 | static void error_timeout_cb(void *data); |
Neels Hofmeyr | b74a2c8 | 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 | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 60 | static void dyn_ts_switchover_complete(struct gsm_lchan *lchan); |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 61 | |
Holger Hans Peter Freyther | 08eebd5 | 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 | bbc5b99 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 68 | osmo_signal_dispatch(SS_LCHAN, sig_no, &sig); |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 69 | } |
| 70 | |
Holger Hans Peter Freyther | 93599a2 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 71 | static void do_lchan_free(struct gsm_lchan *lchan) |
| 72 | { |
Holger Hans Peter Freyther | f040506 | 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 | 93599a2 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 80 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | f040506 | 2014-04-06 12:21:05 +0200 | [diff] [blame] | 81 | } |
Holger Hans Peter Freyther | 93599a2 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 82 | lchan_free(lchan); |
| 83 | } |
| 84 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 85 | static uint8_t mdisc_by_msgtype(uint8_t msg_type) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 86 | { |
| 87 | /* mask off the transparent bit ? */ |
| 88 | msg_type &= 0xfe; |
| 89 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 90 | if ((msg_type & 0xf0) == 0x00) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 91 | return ABIS_RSL_MDISC_RLL; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 92 | if ((msg_type & 0xf0) == 0x10) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 93 | if (msg_type >= 0x19 && msg_type <= 0x22) |
| 94 | return ABIS_RSL_MDISC_TRX; |
| 95 | else |
| 96 | return ABIS_RSL_MDISC_COM_CHAN; |
| 97 | } |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 98 | if ((msg_type & 0xe0) == 0x20) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 99 | return ABIS_RSL_MDISC_DED_CHAN; |
| 100 | |
| 101 | return ABIS_RSL_MDISC_LOC; |
| 102 | } |
| 103 | |
| 104 | static inline void init_dchan_hdr(struct abis_rsl_dchan_hdr *dh, |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 105 | uint8_t msg_type) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 106 | { |
| 107 | dh->c.msg_discr = mdisc_by_msgtype(msg_type); |
| 108 | dh->c.msg_type = msg_type; |
| 109 | dh->ie_chan = RSL_IE_CHAN_NR; |
| 110 | } |
| 111 | |
Neels Hofmeyr | 7458572 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 112 | /* call rsl_lchan_lookup and set the log context */ |
Neels Hofmeyr | 2867f88 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 113 | static struct gsm_lchan *lchan_lookup(struct gsm_bts_trx *trx, uint8_t chan_nr, |
| 114 | const char *log_name) |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 115 | { |
Neels Hofmeyr | 7458572 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 116 | int rc; |
| 117 | struct gsm_lchan *lchan = rsl_lchan_lookup(trx, chan_nr, &rc); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 118 | |
Neels Hofmeyr | 7458572 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 119 | if (!lchan) { |
Neels Hofmeyr | 2867f88 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 120 | LOGP(DRSL, LOGL_ERROR, "%sunknown chan_nr=0x%02x\n", |
| 121 | log_name, chan_nr); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 122 | return NULL; |
| 123 | } |
| 124 | |
Neels Hofmeyr | 7458572 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 125 | if (rc < 0) |
Neels Hofmeyr | 2867f88 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 126 | LOGP(DRSL, LOGL_ERROR, "%s %smismatching chan_nr=0x%02x\n", |
| 127 | gsm_ts_and_pchan_name(lchan->ts), log_name, chan_nr); |
Neels Hofmeyr | 7458572 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 128 | |
Harald Welte | dc5062b | 2010-03-26 21:28:59 +0800 | [diff] [blame] | 129 | log_set_context(BSC_CTX_LCHAN, lchan); |
Holger Hans Peter Freyther | 2412a07 | 2010-06-28 15:47:12 +0800 | [diff] [blame] | 130 | if (lchan->conn) |
| 131 | log_set_context(BSC_CTX_SUBSCR, lchan->conn->subscr); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 132 | |
| 133 | return lchan; |
| 134 | } |
| 135 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 136 | /* As per TS 03.03 Section 2.2, the IMSI has 'not more than 15 digits' */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 137 | uint64_t str_to_imsi(const char *imsi_str) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 138 | { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 139 | uint64_t ret; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 140 | |
| 141 | ret = strtoull(imsi_str, NULL, 10); |
| 142 | |
| 143 | return ret; |
| 144 | } |
| 145 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 146 | static struct msgb *rsl_msgb_alloc(void) |
| 147 | { |
Harald Welte | 966636f | 2009-06-26 19:39:35 +0200 | [diff] [blame] | 148 | return msgb_alloc_headroom(RSL_ALLOC_SIZE, RSL_ALLOC_HEADROOM, |
| 149 | "RSL"); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 150 | } |
| 151 | |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 152 | #define MACBLOCK_SIZE 23 |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 153 | static void pad_macblock(uint8_t *out, const uint8_t *in, int len) |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 154 | { |
| 155 | memcpy(out, in, len); |
| 156 | |
| 157 | if (len < MACBLOCK_SIZE) |
| 158 | memset(out+len, 0x2b, MACBLOCK_SIZE-len); |
| 159 | } |
| 160 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 161 | /* Chapter 9.3.7: Encryption Information */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 162 | static int build_encr_info(uint8_t *out, struct gsm_lchan *lchan) |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 163 | { |
| 164 | *out++ = lchan->encr.alg_id & 0xff; |
| 165 | if (lchan->encr.key_len) |
| 166 | memcpy(out, lchan->encr.key, lchan->encr.key_len); |
| 167 | return lchan->encr.key_len + 1; |
| 168 | } |
| 169 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 170 | static void print_rsl_cause(int lvl, const uint8_t *cause_v, uint8_t cause_len) |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 171 | { |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 172 | int i; |
| 173 | |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 174 | LOGPC(DRSL, lvl, "CAUSE=0x%02x(%s) ", |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 175 | cause_v[0], rsl_err_name(cause_v[0])); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 176 | for (i = 1; i < cause_len-1; i++) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 177 | LOGPC(DRSL, lvl, "%02x ", cause_v[i]); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 178 | } |
| 179 | |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 180 | static void lchan_act_tmr_cb(void *data) |
| 181 | { |
| 182 | struct gsm_lchan *lchan = data; |
| 183 | |
Holger Hans Peter Freyther | 454140e | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 184 | rsl_lchan_mark_broken(lchan, "activation timeout"); |
Daniel Willmann | 513da17 | 2011-08-11 04:44:12 +0200 | [diff] [blame] | 185 | lchan_free(lchan); |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | static void lchan_deact_tmr_cb(void *data) |
| 189 | { |
| 190 | struct gsm_lchan *lchan = data; |
| 191 | |
Holger Hans Peter Freyther | 454140e | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 192 | rsl_lchan_mark_broken(lchan, "de-activation timeout"); |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 193 | lchan_free(lchan); |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 194 | } |
| 195 | |
| 196 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 197 | /* Send a BCCH_INFO message as per Chapter 8.5.1 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 198 | int rsl_bcch_info(struct gsm_bts_trx *trx, uint8_t type, |
| 199 | const uint8_t *data, int len) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 200 | { |
| 201 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 202 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 203 | |
| 204 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof*dh); |
| 205 | init_dchan_hdr(dh, RSL_MT_BCCH_INFO); |
| 206 | dh->chan_nr = RSL_CHAN_BCCH; |
| 207 | |
| 208 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 209 | msgb_tlv_put(msg, RSL_IE_FULL_BCCH_INFO, len, data); |
| 210 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 211 | msg->dst = trx->rsl_link; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 212 | |
| 213 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 214 | } |
| 215 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 216 | int rsl_sacch_filling(struct gsm_bts_trx *trx, uint8_t type, |
| 217 | const uint8_t *data, int len) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 218 | { |
| 219 | struct abis_rsl_common_hdr *ch; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 220 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 221 | |
| 222 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 223 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 224 | ch->msg_type = RSL_MT_SACCH_FILL; |
| 225 | |
| 226 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 227 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 228 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 229 | msg->dst = trx->rsl_link; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 230 | |
| 231 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 232 | } |
| 233 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 234 | int rsl_sacch_info_modify(struct gsm_lchan *lchan, uint8_t type, |
| 235 | const uint8_t *data, int len) |
Harald Welte | 7a69cf0 | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 236 | { |
| 237 | struct abis_rsl_dchan_hdr *dh; |
| 238 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 239 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 7a69cf0 | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 240 | |
| 241 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 242 | init_dchan_hdr(dh, RSL_MT_SACCH_INFO_MODIFY); |
| 243 | dh->chan_nr = chan_nr; |
| 244 | |
| 245 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 246 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
| 247 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 248 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 7a69cf0 | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 249 | |
| 250 | return abis_rsl_sendmsg(msg); |
| 251 | } |
| 252 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 253 | int rsl_chan_bs_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int db) |
| 254 | { |
| 255 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 256 | struct msgb *msg; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 257 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 258 | |
| 259 | db = abs(db); |
| 260 | if (db > 30) |
| 261 | return -EINVAL; |
| 262 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 263 | msg = rsl_msgb_alloc(); |
| 264 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 265 | lchan->bs_power = db/2; |
| 266 | if (fpc) |
| 267 | lchan->bs_power |= 0x10; |
| 268 | |
| 269 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 270 | init_dchan_hdr(dh, RSL_MT_BS_POWER_CONTROL); |
| 271 | dh->chan_nr = chan_nr; |
| 272 | |
| 273 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 274 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 275 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 276 | |
| 277 | return abis_rsl_sendmsg(msg); |
| 278 | } |
| 279 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 280 | int rsl_chan_ms_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int dbm) |
| 281 | { |
| 282 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 283 | struct msgb *msg; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 284 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 285 | int ctl_lvl; |
| 286 | |
Harald Welte | 66b6a8d | 2009-08-09 14:45:18 +0200 | [diff] [blame] | 287 | ctl_lvl = ms_pwr_ctl_lvl(lchan->ts->trx->bts->band, dbm); |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 288 | if (ctl_lvl < 0) |
| 289 | return ctl_lvl; |
| 290 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 291 | msg = rsl_msgb_alloc(); |
| 292 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 293 | lchan->ms_power = ctl_lvl; |
| 294 | |
| 295 | if (fpc) |
| 296 | lchan->ms_power |= 0x20; |
| 297 | |
| 298 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 299 | init_dchan_hdr(dh, RSL_MT_MS_POWER_CONTROL); |
| 300 | dh->chan_nr = chan_nr; |
| 301 | |
| 302 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 303 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 304 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 305 | |
| 306 | return abis_rsl_sendmsg(msg); |
| 307 | } |
| 308 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 309 | static int channel_mode_from_lchan(struct rsl_ie_chan_mode *cm, |
| 310 | struct gsm_lchan *lchan) |
| 311 | { |
Holger Hans Peter Freyther | e1145cf | 2013-03-09 17:50:10 +0100 | [diff] [blame] | 312 | memset(cm, 0, sizeof(*cm)); |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 313 | |
| 314 | /* FIXME: what to do with data calls ? */ |
Max | c08ee71 | 2016-05-11 12:45:13 +0200 | [diff] [blame] | 315 | cm->dtx_dtu = 0; |
| 316 | if (lchan->ts->trx->bts->dtxu != GSM48_DTX_SHALL_NOT_BE_USED) |
| 317 | cm->dtx_dtu |= RSL_CMOD_DTXu; |
| 318 | if (lchan->ts->trx->bts->dtxd) |
| 319 | cm->dtx_dtu |= RSL_CMOD_DTXd; |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 320 | |
| 321 | /* set TCH Speech/Data */ |
| 322 | cm->spd_ind = lchan->rsl_cmode; |
| 323 | |
Harald Welte | 1a79d36 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 324 | if (lchan->rsl_cmode == RSL_CMOD_SPD_SIGN && |
| 325 | lchan->tch_mode != GSM48_CMODE_SIGN) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 326 | LOGP(DRSL, LOGL_ERROR, "unsupported: rsl_mode == signalling, " |
Harald Welte | 1a79d36 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 327 | "but tch_mode != signalling\n"); |
| 328 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 329 | switch (lchan->type) { |
| 330 | case GSM_LCHAN_SDCCH: |
| 331 | cm->chan_rt = RSL_CMOD_CRT_SDCCH; |
| 332 | break; |
| 333 | case GSM_LCHAN_TCH_F: |
| 334 | cm->chan_rt = RSL_CMOD_CRT_TCH_Bm; |
| 335 | break; |
| 336 | case GSM_LCHAN_TCH_H: |
| 337 | cm->chan_rt = RSL_CMOD_CRT_TCH_Lm; |
| 338 | break; |
| 339 | case GSM_LCHAN_NONE: |
| 340 | case GSM_LCHAN_UNKNOWN: |
| 341 | default: |
Neels Hofmeyr | bbbcfe5 | 2016-07-18 23:47:24 +0200 | [diff] [blame] | 342 | LOGP(DRSL, LOGL_ERROR, |
| 343 | "unsupported activation lchan->type %u %s\n", |
| 344 | lchan->type, gsm_lchant_name(lchan->type)); |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 345 | return -EINVAL; |
| 346 | } |
| 347 | |
| 348 | switch (lchan->tch_mode) { |
| 349 | case GSM48_CMODE_SIGN: |
| 350 | cm->chan_rate = 0; |
| 351 | break; |
| 352 | case GSM48_CMODE_SPEECH_V1: |
| 353 | cm->chan_rate = RSL_CMOD_SP_GSM1; |
| 354 | break; |
| 355 | case GSM48_CMODE_SPEECH_EFR: |
| 356 | cm->chan_rate = RSL_CMOD_SP_GSM2; |
| 357 | break; |
| 358 | case GSM48_CMODE_SPEECH_AMR: |
| 359 | cm->chan_rate = RSL_CMOD_SP_GSM3; |
| 360 | break; |
| 361 | case GSM48_CMODE_DATA_14k5: |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 362 | case GSM48_CMODE_DATA_12k0: |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 363 | case GSM48_CMODE_DATA_6k0: |
Harald Welte | e422798 | 2012-08-24 15:33:56 +0200 | [diff] [blame] | 364 | switch (lchan->csd_mode) { |
| 365 | case LCHAN_CSD_M_NT: |
| 366 | /* non-transparent CSD with RLP */ |
| 367 | switch (lchan->tch_mode) { |
| 368 | case GSM48_CMODE_DATA_14k5: |
| 369 | cm->chan_rate = RSL_CMOD_SP_NT_14k5; |
| 370 | break; |
| 371 | case GSM48_CMODE_DATA_12k0: |
| 372 | cm->chan_rate = RSL_CMOD_SP_NT_12k0; |
| 373 | break; |
| 374 | case GSM48_CMODE_DATA_6k0: |
| 375 | cm->chan_rate = RSL_CMOD_SP_NT_6k0; |
| 376 | break; |
| 377 | default: |
Neels Hofmeyr | bbbcfe5 | 2016-07-18 23:47:24 +0200 | [diff] [blame] | 378 | LOGP(DRSL, LOGL_ERROR, |
| 379 | "unsupported lchan->tch_mode %u\n", |
| 380 | lchan->tch_mode); |
Harald Welte | e422798 | 2012-08-24 15:33:56 +0200 | [diff] [blame] | 381 | return -EINVAL; |
| 382 | } |
| 383 | break; |
| 384 | /* transparent data services below */ |
| 385 | case LCHAN_CSD_M_T_1200_75: |
| 386 | cm->chan_rate = RSL_CMOD_CSD_T_1200_75; |
| 387 | break; |
| 388 | case LCHAN_CSD_M_T_600: |
| 389 | cm->chan_rate = RSL_CMOD_CSD_T_600; |
| 390 | break; |
| 391 | case LCHAN_CSD_M_T_1200: |
| 392 | cm->chan_rate = RSL_CMOD_CSD_T_1200; |
| 393 | break; |
| 394 | case LCHAN_CSD_M_T_2400: |
| 395 | cm->chan_rate = RSL_CMOD_CSD_T_2400; |
| 396 | break; |
| 397 | case LCHAN_CSD_M_T_9600: |
| 398 | cm->chan_rate = RSL_CMOD_CSD_T_9600; |
| 399 | break; |
| 400 | case LCHAN_CSD_M_T_14400: |
| 401 | cm->chan_rate = RSL_CMOD_CSD_T_14400; |
| 402 | break; |
| 403 | case LCHAN_CSD_M_T_29000: |
| 404 | cm->chan_rate = RSL_CMOD_CSD_T_29000; |
| 405 | break; |
| 406 | case LCHAN_CSD_M_T_32000: |
| 407 | cm->chan_rate = RSL_CMOD_CSD_T_32000; |
| 408 | break; |
| 409 | default: |
Neels Hofmeyr | bbbcfe5 | 2016-07-18 23:47:24 +0200 | [diff] [blame] | 410 | LOGP(DRSL, LOGL_ERROR, |
| 411 | "unsupported lchan->csd_mode %u\n", |
| 412 | lchan->csd_mode); |
Harald Welte | e422798 | 2012-08-24 15:33:56 +0200 | [diff] [blame] | 413 | return -EINVAL; |
| 414 | } |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 415 | default: |
Neels Hofmeyr | bbbcfe5 | 2016-07-18 23:47:24 +0200 | [diff] [blame] | 416 | LOGP(DRSL, LOGL_ERROR, |
| 417 | "unsupported lchan->tch_mode %u\n", |
| 418 | lchan->tch_mode); |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 419 | return -EINVAL; |
| 420 | } |
| 421 | |
| 422 | return 0; |
| 423 | } |
| 424 | |
Holger Hans Peter Freyther | 11cb7a9 | 2015-08-20 19:32:46 +0200 | [diff] [blame] | 425 | static void mr_config_for_bts(struct gsm_lchan *lchan, struct msgb *msg) |
| 426 | { |
| 427 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) |
| 428 | msgb_tlv_put(msg, RSL_IE_MR_CONFIG, lchan->mr_bts_lv[0], |
| 429 | lchan->mr_bts_lv + 1); |
| 430 | } |
| 431 | |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 432 | static enum gsm_phys_chan_config pchan_for_lchant(enum gsm_chan_t type) |
| 433 | { |
| 434 | switch (type) { |
| 435 | case GSM_LCHAN_TCH_F: |
| 436 | return GSM_PCHAN_TCH_F; |
| 437 | case GSM_LCHAN_TCH_H: |
| 438 | return GSM_PCHAN_TCH_H; |
| 439 | case GSM_LCHAN_NONE: |
| 440 | case GSM_LCHAN_PDTCH: |
| 441 | /* TODO: so far lchan->type is NONE in PDCH mode. PDTCH is only |
| 442 | * used in osmo-bts. Maybe set PDTCH and drop the NONE case |
| 443 | * here. */ |
| 444 | return GSM_PCHAN_PDCH; |
| 445 | default: |
| 446 | return GSM_PCHAN_UNKNOWN; |
| 447 | } |
| 448 | } |
| 449 | |
| 450 | /*! Tx simplified channel activation message for non-standard PDCH type. */ |
| 451 | static int rsl_chan_activate_lchan_as_pdch(struct gsm_lchan *lchan) |
| 452 | { |
| 453 | struct msgb *msg; |
| 454 | struct abis_rsl_dchan_hdr *dh; |
| 455 | |
| 456 | /* This might be called after release of the second lchan of a TCH/H, |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 457 | * but PDCH activation must always happen on the first lchan. Make sure |
| 458 | * the calling code passes the correct lchan. */ |
| 459 | OSMO_ASSERT(lchan == lchan->ts->lchan); |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 460 | |
| 461 | rsl_lchan_set_state(lchan, LCHAN_S_ACT_REQ); |
| 462 | |
| 463 | msg = rsl_msgb_alloc(); |
| 464 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 465 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 466 | dh->chan_nr = gsm_lchan_as_pchan2chan_nr(lchan, GSM_PCHAN_PDCH); |
| 467 | |
| 468 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, RSL_ACT_OSMO_PDCH); |
| 469 | |
| 470 | msg->dst = lchan->ts->trx->rsl_link; |
| 471 | |
| 472 | return abis_rsl_sendmsg(msg); |
| 473 | } |
| 474 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 475 | /* Chapter 8.4.1 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 476 | int rsl_chan_activate_lchan(struct gsm_lchan *lchan, uint8_t act_type, |
Andreas Eversberg | 723a751 | 2013-10-11 12:55:35 +0200 | [diff] [blame] | 477 | uint8_t ho_ref) |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 478 | { |
| 479 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 480 | struct msgb *msg; |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 481 | int rc; |
Harald Welte | 93d50e6 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 482 | uint8_t *len; |
Andreas Eversberg | 723a751 | 2013-10-11 12:55:35 +0200 | [diff] [blame] | 483 | uint8_t ta; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 484 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 485 | struct rsl_ie_chan_mode cm; |
laforge | 694a5cf | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 486 | struct gsm48_chan_desc cd; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 487 | |
Neels Hofmeyr | c6926d0 | 2016-07-14 02:51:13 +0200 | [diff] [blame] | 488 | /* If a TCH_F/PDCH TS is in PDCH mode, deactivate PDCH first. */ |
Andreas Eversberg | 9df268e | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 489 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_PDCH |
Neels Hofmeyr | 2ebacce | 2016-06-14 14:08:35 +0200 | [diff] [blame] | 490 | && (lchan->ts->flags & TS_F_PDCH_ACTIVE)) { |
Andreas Eversberg | 9df268e | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 491 | /* store activation type and handover reference */ |
Neels Hofmeyr | 6e999b7 | 2016-07-23 21:00:51 +0200 | [diff] [blame] | 492 | lchan->dyn.act_type = act_type; |
| 493 | lchan->dyn.ho_ref = ho_ref; |
Andreas Eversberg | 9df268e | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 494 | return rsl_ipacc_pdch_activate(lchan->ts, 0); |
| 495 | } |
| 496 | |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 497 | /* |
| 498 | * If necessary, release PDCH on dynamic TS. Note that sending a |
| 499 | * release here is only necessary when in PDCH mode; for TCH types, an |
| 500 | * RSL RF Chan Release is initiated by the BTS when a voice call ends, |
| 501 | * so when we reach this, it will already be released. If a dyn TS is |
| 502 | * in PDCH mode, it is still active and we need to initiate a release |
| 503 | * from the BSC side here. |
| 504 | * |
| 505 | * If pchan_is != pchan_want, the PDCH has already been taken down and |
| 506 | * the switchover now needs to enable the TCH lchan. |
| 507 | * |
| 508 | * To switch a dyn TS between TCH/H and TCH/F, it is sufficient to send |
| 509 | * a chan activ with the new lchan type, because it will already be |
| 510 | * released. |
| 511 | */ |
| 512 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH |
| 513 | && lchan->ts->dyn.pchan_is == GSM_PCHAN_PDCH |
| 514 | && lchan->ts->dyn.pchan_is == lchan->ts->dyn.pchan_want) { |
| 515 | enum gsm_phys_chan_config pchan_want; |
| 516 | pchan_want = pchan_for_lchant(lchan->type); |
| 517 | if (lchan->ts->dyn.pchan_is != pchan_want) { |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 518 | /* |
| 519 | * Make sure to record on lchan[0] so that we'll find |
| 520 | * it after the PDCH release. |
| 521 | */ |
| 522 | struct gsm_lchan *lchan0 = lchan->ts->lchan; |
| 523 | lchan0->dyn.act_type = act_type, |
| 524 | lchan0->dyn.ho_ref = ho_ref; |
| 525 | lchan0->dyn.rqd_ref = lchan->rqd_ref; |
| 526 | lchan0->dyn.rqd_ta = lchan->rqd_ta; |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 527 | lchan->rqd_ref = NULL; |
| 528 | lchan->rqd_ta = 0; |
| 529 | DEBUGP(DRSL, "%s saved rqd_ref=%p ta=%u\n", |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 530 | gsm_lchan_name(lchan0), lchan0->rqd_ref, |
| 531 | lchan0->rqd_ta); |
| 532 | return dyn_ts_switchover_start(lchan->ts, pchan_want); |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 533 | } |
| 534 | } |
| 535 | |
| 536 | DEBUGP(DRSL, "%s Tx RSL Channel Activate with act_type=%s\n", |
| 537 | gsm_ts_and_pchan_name(lchan->ts), |
| 538 | rsl_act_type_name(act_type)); |
| 539 | |
| 540 | if (act_type == RSL_ACT_OSMO_PDCH) { |
| 541 | if (lchan->ts->pchan != GSM_PCHAN_TCH_F_TCH_H_PDCH) { |
| 542 | LOGP(DRSL, LOGL_ERROR, |
| 543 | "%s PDCH channel activation only allowed on %s\n", |
| 544 | gsm_ts_and_pchan_name(lchan->ts), |
| 545 | gsm_pchan_name(GSM_PCHAN_TCH_F_TCH_H_PDCH)); |
| 546 | return -EINVAL; |
| 547 | } |
| 548 | return rsl_chan_activate_lchan_as_pdch(lchan); |
| 549 | } |
| 550 | |
| 551 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH |
| 552 | && lchan->ts->dyn.pchan_want == GSM_PCHAN_PDCH) { |
| 553 | LOGP(DRSL, LOGL_ERROR, |
| 554 | "%s Expected PDCH activation kind\n", |
| 555 | gsm_ts_and_pchan_name(lchan->ts)); |
| 556 | return -EINVAL; |
| 557 | } |
| 558 | |
Neels Hofmeyr | cf79338 | 2016-07-23 19:49:58 +0200 | [diff] [blame] | 559 | rc = channel_mode_from_lchan(&cm, lchan); |
| 560 | if (rc < 0) { |
| 561 | LOGP(DRSL, LOGL_ERROR, |
| 562 | "%s Cannot find channel mode from lchan type\n", |
| 563 | gsm_ts_and_pchan_name(lchan->ts)); |
| 564 | return rc; |
| 565 | } |
| 566 | |
Neels Hofmeyr | 832afa3 | 2016-06-14 13:12:00 +0200 | [diff] [blame] | 567 | rsl_lchan_set_state(lchan, LCHAN_S_ACT_REQ); |
| 568 | |
Andreas Eversberg | 723a751 | 2013-10-11 12:55:35 +0200 | [diff] [blame] | 569 | ta = lchan->rqd_ta; |
| 570 | |
| 571 | /* BS11 requires TA shifted by 2 bits */ |
| 572 | if (lchan->ts->trx->bts->type == GSM_BTS_TYPE_BS11) |
| 573 | ta <<= 2; |
| 574 | |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 575 | memset(&cd, 0, sizeof(cd)); |
laforge | 694a5cf | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 576 | gsm48_lchan2chan_desc(&cd, lchan); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 577 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 578 | msg = rsl_msgb_alloc(); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 579 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 580 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
Neels Hofmeyr | 7af652c | 2016-07-23 19:51:09 +0200 | [diff] [blame] | 581 | |
| 582 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH) |
| 583 | dh->chan_nr = gsm_lchan_as_pchan2chan_nr( |
| 584 | lchan, lchan->ts->dyn.pchan_want); |
| 585 | else |
| 586 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 587 | |
| 588 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 589 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 590 | (uint8_t *) &cm); |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 591 | |
| 592 | /* |
| 593 | * The Channel Identification is needed for Phase1 phones |
| 594 | * and it contains the GSM48 Channel Description and the |
| 595 | * Mobile Allocation. The GSM 08.58 asks for the Mobile |
| 596 | * Allocation to have a length of zero. We are using the |
| 597 | * msgb_l3len to calculate the length of both messages. |
| 598 | */ |
laforge | 694a5cf | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 599 | msgb_v_put(msg, RSL_IE_CHAN_IDENT); |
Harald Welte | 93d50e6 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 600 | len = msgb_put(msg, 1); |
Dieter Spaar | eabb6e3 | 2011-07-27 23:40:33 +0200 | [diff] [blame] | 601 | msgb_tv_fixed_put(msg, GSM48_IE_CHANDESC_2, sizeof(cd), (const uint8_t *) &cd); |
Holger Hans Peter Freyther | 0379c6d | 2010-06-30 12:06:20 +0800 | [diff] [blame] | 602 | |
| 603 | if (lchan->ts->hopping.enabled) |
| 604 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, lchan->ts->hopping.ma_len, |
| 605 | lchan->ts->hopping.ma_data); |
| 606 | else |
| 607 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, 0, NULL); |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 608 | |
| 609 | /* update the calculated size */ |
| 610 | msg->l3h = len + 1; |
| 611 | *len = msgb_l3len(msg); |
| 612 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 613 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 614 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 615 | rc = build_encr_info(encr_info, lchan); |
| 616 | if (rc > 0) |
| 617 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 618 | } |
| 619 | |
Harald Welte | 8d77b95 | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 620 | switch (act_type) { |
| 621 | case RSL_ACT_INTER_ASYNC: |
| 622 | case RSL_ACT_INTER_SYNC: |
| 623 | msgb_tv_put(msg, RSL_IE_HANDO_REF, ho_ref); |
| 624 | break; |
| 625 | default: |
| 626 | break; |
| 627 | } |
| 628 | |
Harald Welte | d4c9bf3 | 2009-02-15 16:56:18 +0000 | [diff] [blame] | 629 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 630 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 631 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
Holger Hans Peter Freyther | 11cb7a9 | 2015-08-20 19:32:46 +0200 | [diff] [blame] | 632 | mr_config_for_bts(lchan, msg); |
Holger Hans Peter Freyther | 93b6c65 | 2010-01-28 04:45:05 +0100 | [diff] [blame] | 633 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 634 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 635 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 636 | return abis_rsl_sendmsg(msg); |
| 637 | } |
| 638 | |
Harald Welte | 470abb7 | 2009-07-29 11:38:15 +0200 | [diff] [blame] | 639 | /* Chapter 8.4.9: Modify channel mode on BTS side */ |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 640 | int rsl_chan_mode_modify_req(struct gsm_lchan *lchan) |
| 641 | { |
| 642 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 643 | struct msgb *msg; |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 644 | int rc; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 645 | |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 646 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 647 | struct rsl_ie_chan_mode cm; |
| 648 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 649 | rc = channel_mode_from_lchan(&cm, lchan); |
| 650 | if (rc < 0) |
| 651 | return rc; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 652 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 653 | msg = rsl_msgb_alloc(); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 654 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 655 | init_dchan_hdr(dh, RSL_MT_MODE_MODIFY_REQ); |
| 656 | dh->chan_nr = chan_nr; |
| 657 | |
| 658 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 659 | (uint8_t *) &cm); |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 660 | |
| 661 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 662 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 663 | rc = build_encr_info(encr_info, lchan); |
| 664 | if (rc > 0) |
| 665 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 666 | } |
| 667 | |
Holger Hans Peter Freyther | 11cb7a9 | 2015-08-20 19:32:46 +0200 | [diff] [blame] | 668 | mr_config_for_bts(lchan, msg); |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 669 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 670 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 671 | |
| 672 | return abis_rsl_sendmsg(msg); |
| 673 | } |
| 674 | |
| 675 | /* Chapter 8.4.6: Send the encryption command with given L3 info */ |
| 676 | int rsl_encryption_cmd(struct msgb *msg) |
| 677 | { |
| 678 | struct abis_rsl_dchan_hdr *dh; |
| 679 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 680 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 681 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
| 682 | uint8_t l3_len = msg->len; |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 683 | int rc; |
| 684 | |
| 685 | /* First push the L3 IE tag and length */ |
| 686 | msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len); |
| 687 | |
| 688 | /* then the link identifier (SAPI0, main sign link) */ |
| 689 | msgb_tv_push(msg, RSL_IE_LINK_IDENT, 0); |
| 690 | |
| 691 | /* then encryption information */ |
| 692 | rc = build_encr_info(encr_info, lchan); |
| 693 | if (rc <= 0) |
| 694 | return rc; |
| 695 | msgb_tlv_push(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 696 | |
| 697 | /* and finally the DCHAN header */ |
| 698 | dh = (struct abis_rsl_dchan_hdr *) msgb_push(msg, sizeof(*dh)); |
| 699 | init_dchan_hdr(dh, RSL_MT_ENCR_CMD); |
| 700 | dh->chan_nr = chan_nr; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 701 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 702 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 703 | |
| 704 | return abis_rsl_sendmsg(msg); |
| 705 | } |
| 706 | |
Harald Welte | 115d103 | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 707 | /* Chapter 8.4.5 / 4.6: Deactivate the SACCH after 04.08 RR CHAN RELEASE */ |
Harald Welte | ae0f236 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 708 | int rsl_deact_sacch(struct gsm_lchan *lchan) |
| 709 | { |
| 710 | struct abis_rsl_dchan_hdr *dh; |
| 711 | struct msgb *msg = rsl_msgb_alloc(); |
| 712 | |
| 713 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 714 | init_dchan_hdr(dh, RSL_MT_DEACTIVATE_SACCH); |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 715 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | ae0f236 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 716 | |
| 717 | msg->lchan = lchan; |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 718 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | ae0f236 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 719 | |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 720 | DEBUGP(DRSL, "%s DEACTivate SACCH CMD\n", gsm_lchan_name(lchan)); |
Harald Welte | ae0f236 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 721 | |
| 722 | return abis_rsl_sendmsg(msg); |
| 723 | } |
| 724 | |
Neels Hofmeyr | 2ae305d | 2016-08-24 14:44:11 +0200 | [diff] [blame] | 725 | static bool dyn_ts_should_switch_to_pdch(struct gsm_bts_trx_ts *ts) |
| 726 | { |
| 727 | int ss; |
| 728 | |
| 729 | if (ts->pchan != GSM_PCHAN_TCH_F_TCH_H_PDCH) |
| 730 | return false; |
| 731 | |
| 732 | if (ts->trx->bts->gprs.mode == BTS_GPRS_NONE) |
| 733 | return false; |
| 734 | |
| 735 | /* Already in PDCH mode? */ |
| 736 | if (ts->dyn.pchan_is == GSM_PCHAN_PDCH) |
| 737 | return false; |
| 738 | |
| 739 | /* See if all lchans are released. */ |
| 740 | for (ss = 0; ss < ts_subslots(ts); ss++) { |
| 741 | struct gsm_lchan *lc = &ts->lchan[ss]; |
| 742 | if (lc->state != LCHAN_S_NONE) { |
Neels Hofmeyr | baa6c55 | 2016-08-24 14:48:39 +0200 | [diff] [blame] | 743 | DEBUGP(DRSL, "%s lchan %u still in use" |
| 744 | " (type=%s,state=%s)\n", |
| 745 | gsm_ts_and_pchan_name(ts), lc->nr, |
| 746 | gsm_lchant_name(lc->type), |
| 747 | gsm_lchans_name(lc->state)); |
Neels Hofmeyr | 2ae305d | 2016-08-24 14:44:11 +0200 | [diff] [blame] | 748 | /* An lchan is still used. */ |
| 749 | return false; |
| 750 | } |
| 751 | } |
| 752 | |
| 753 | /* All channels are released, go to PDCH mode. */ |
| 754 | DEBUGP(DRSL, "%s back to PDCH\n", |
| 755 | gsm_ts_and_pchan_name(ts)); |
| 756 | return true; |
| 757 | } |
| 758 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 759 | static void error_timeout_cb(void *data) |
| 760 | { |
| 761 | struct gsm_lchan *lchan = data; |
| 762 | if (lchan->state != LCHAN_S_REL_ERR) { |
| 763 | LOGP(DRSL, LOGL_ERROR, "%s error timeout but not in error state: %d\n", |
| 764 | gsm_lchan_name(lchan), lchan->state); |
| 765 | return; |
| 766 | } |
| 767 | |
| 768 | /* go back to the none state */ |
Harald Welte | a9e420e | 2012-11-13 04:26:22 +0100 | [diff] [blame] | 769 | LOGP(DRSL, LOGL_INFO, "%s is back in operation.\n", gsm_lchan_name(lchan)); |
Holger Hans Peter Freyther | 44752d9 | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 770 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
Neels Hofmeyr | 82c8f75 | 2016-06-21 20:55:14 +0200 | [diff] [blame] | 771 | |
Neels Hofmeyr | 9ddd8e6 | 2016-07-06 14:39:04 +0200 | [diff] [blame] | 772 | /* Put PDCH channel back into PDCH mode, if GPRS is enabled */ |
| 773 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_PDCH |
| 774 | && lchan->ts->trx->bts->gprs.mode != BTS_GPRS_NONE) |
Neels Hofmeyr | 82c8f75 | 2016-06-21 20:55:14 +0200 | [diff] [blame] | 775 | rsl_ipacc_pdch_activate(lchan->ts, 1); |
Neels Hofmeyr | cd150a8 | 2016-08-24 14:45:44 +0200 | [diff] [blame] | 776 | |
| 777 | if (dyn_ts_should_switch_to_pdch(lchan->ts)) |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 778 | dyn_ts_switchover_start(lchan->ts, GSM_PCHAN_PDCH); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 779 | } |
| 780 | |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 781 | static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan); |
| 782 | |
Harald Welte | 115d103 | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 783 | /* Chapter 8.4.14 / 4.7: Tell BTS to release the radio channel */ |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 784 | static int rsl_rf_chan_release(struct gsm_lchan *lchan, int error, |
| 785 | enum sacch_deact deact_sacch) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 786 | { |
| 787 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 788 | struct msgb *msg; |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 789 | int rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 790 | |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 791 | /* Stop timers that should lead to a channel release */ |
| 792 | osmo_timer_del(&lchan->T3109); |
| 793 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 794 | if (lchan->state == LCHAN_S_REL_ERR) { |
Neels Hofmeyr | d5d39ae | 2016-08-24 17:02:19 +0200 | [diff] [blame] | 795 | LOGP(DRSL, LOGL_NOTICE, "%s is in error state, not sending release.\n", |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 796 | gsm_lchan_name(lchan)); |
| 797 | return -1; |
| 798 | } |
| 799 | |
| 800 | msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 801 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 802 | init_dchan_hdr(dh, RSL_MT_RF_CHAN_REL); |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 803 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 804 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 805 | msg->lchan = lchan; |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 806 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 807 | |
Neels Hofmeyr | b3d8706 | 2016-08-22 18:40:07 +0200 | [diff] [blame] | 808 | if (error) |
| 809 | DEBUGP(DRSL, "%s RF Channel Release due to error: %d\n", |
| 810 | gsm_lchan_name(lchan), error); |
| 811 | else |
| 812 | DEBUGP(DRSL, "%s RF Channel Release\n", gsm_lchan_name(lchan)); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 813 | |
| 814 | if (error) { |
Holger Hans Peter Freyther | 9d50a27 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 815 | /* |
| 816 | * FIXME: GSM 04.08 gives us two options for the abnormal |
| 817 | * chanel release. This can be either like in the non-existent |
| 818 | * sub-lcuase 3.5.1 or for the main signalling link deactivate |
| 819 | * the SACCH, start timer T3109 and consider the channel as |
| 820 | * released. |
| 821 | * |
| 822 | * This code is doing the later for all raido links and not |
| 823 | * only the main link. Right now all SAPIs are released on the |
| 824 | * local end, the SACCH will be de-activated and right now the |
| 825 | * T3111 will be started. First T3109 should be started and then |
| 826 | * the T3111. |
| 827 | * |
| 828 | * TODO: Move this out of the function. |
| 829 | */ |
| 830 | |
| 831 | /* |
| 832 | * sacch de-activate and "local end release" |
| 833 | */ |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 834 | if (deact_sacch == SACCH_DEACTIVATE) |
| 835 | rsl_deact_sacch(lchan); |
Holger Hans Peter Freyther | 9d50a27 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 836 | rsl_release_sapis_from(lchan, 0, RSL_REL_LOCAL_END); |
| 837 | |
| 838 | /* |
| 839 | * TODO: start T3109 now. |
| 840 | */ |
Holger Hans Peter Freyther | 44752d9 | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 841 | rsl_lchan_set_state(lchan, LCHAN_S_REL_ERR); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 842 | } |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 843 | |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 844 | /* Start another timer or assume the BTS sends a ACK/NACK? */ |
| 845 | lchan->act_timer.cb = lchan_deact_tmr_cb; |
| 846 | lchan->act_timer.data = lchan; |
| 847 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 848 | |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 849 | rc = abis_rsl_sendmsg(msg); |
| 850 | |
Harald Welte | 115d103 | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 851 | /* BTS will respond by RF CHAN REL ACK */ |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 852 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 853 | } |
| 854 | |
Holger Hans Peter Freyther | 0e4e73a | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 855 | /* |
| 856 | * Special handling for channel releases in the error case. |
| 857 | */ |
| 858 | static int rsl_rf_chan_release_err(struct gsm_lchan *lchan) |
| 859 | { |
| 860 | if (lchan->state != LCHAN_S_ACTIVE) |
| 861 | return 0; |
| 862 | return rsl_rf_chan_release(lchan, 1, SACCH_DEACTIVATE); |
| 863 | } |
| 864 | |
Harald Welte | 64bb754 | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 865 | static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan) |
| 866 | { |
Neels Hofmeyr | 4007468 | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 867 | struct gsm_bts_trx_ts *ts = lchan->ts; |
Harald Welte | 64bb754 | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 868 | |
| 869 | DEBUGP(DRSL, "%s RF CHANNEL RELEASE ACK\n", gsm_lchan_name(lchan)); |
| 870 | |
Holger Hans Peter Freyther | 93599a2 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 871 | /* Stop all pending timers */ |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 872 | osmo_timer_del(&lchan->act_timer); |
Holger Hans Peter Freyther | 93599a2 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 873 | osmo_timer_del(&lchan->T3111); |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 874 | |
Holger Hans Peter Freyther | 6f6cbf7 | 2015-04-04 19:35:22 +0200 | [diff] [blame] | 875 | /* |
| 876 | * The BTS didn't respond within the timeout to our channel |
| 877 | * release request and we have marked the channel as broken. |
| 878 | * Now we do receive an ACK and let's be conservative. If it |
| 879 | * is a sysmoBTS we know that only one RF Channel Release ACK |
| 880 | * will be sent. So let's "repair" the channel. |
| 881 | */ |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 882 | if (lchan->state == LCHAN_S_BROKEN) { |
Neels Hofmeyr | 4007468 | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 883 | int do_free = is_sysmobts_v2(ts->trx->bts); |
Holger Hans Peter Freyther | 6f6cbf7 | 2015-04-04 19:35:22 +0200 | [diff] [blame] | 884 | LOGP(DRSL, LOGL_NOTICE, |
| 885 | "%s CHAN REL ACK for broken channel. %s.\n", |
| 886 | gsm_lchan_name(lchan), |
| 887 | do_free ? "Releasing it" : "Keeping it broken"); |
| 888 | if (do_free) |
| 889 | do_lchan_free(lchan); |
Neels Hofmeyr | d35fc44 | 2016-08-24 17:02:37 +0200 | [diff] [blame] | 890 | if (dyn_ts_should_switch_to_pdch(lchan->ts)) |
| 891 | dyn_ts_switchover_start(lchan->ts, GSM_PCHAN_PDCH); |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 892 | return 0; |
| 893 | } |
| 894 | |
Harald Welte | 64bb754 | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 895 | if (lchan->state != LCHAN_S_REL_REQ && lchan->state != LCHAN_S_REL_ERR) |
| 896 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN REL ACK but state %s\n", |
| 897 | gsm_lchan_name(lchan), |
| 898 | gsm_lchans_name(lchan->state)); |
Andreas Eversberg | 9df268e | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 899 | |
Neels Hofmeyr | 832afa3 | 2016-06-14 13:12:00 +0200 | [diff] [blame] | 900 | do_lchan_free(lchan); |
| 901 | |
Neels Hofmeyr | 3f22122 | 2016-06-23 22:44:20 +0200 | [diff] [blame] | 902 | /* |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 903 | * Check Osmocom RSL CHAN ACT style dynamic TCH/F_TCH/H_PDCH TS for pending |
| 904 | * transitions in these cases: |
| 905 | * |
| 906 | * a) after PDCH was released due to switchover request, activate TCH. |
| 907 | * BSC initiated this switchover, so dyn.pchan_is != pchan_want and |
| 908 | * lchan->type has been set to the desired GSM_LCHAN_*. |
| 909 | * |
| 910 | * b) Voice call ended and a TCH is released. If the TS is now unused, |
| 911 | * switch to PDCH. Here still dyn.pchan_is == dyn.pchan_want because |
| 912 | * we're only just notified and may decide to switch to PDCH now. |
| 913 | */ |
| 914 | if (ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH) { |
| 915 | DEBUGP(DRSL, "%s Rx RSL Channel Release ack for lchan %u\n", |
| 916 | gsm_ts_and_pchan_name(ts), lchan->nr); |
| 917 | |
| 918 | /* (a) */ |
| 919 | if (ts->dyn.pchan_is != ts->dyn.pchan_want) |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 920 | return dyn_ts_switchover_continue(ts); |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 921 | |
| 922 | /* (b) */ |
Neels Hofmeyr | 2ae305d | 2016-08-24 14:44:11 +0200 | [diff] [blame] | 923 | if (dyn_ts_should_switch_to_pdch(ts)) |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 924 | return dyn_ts_switchover_start(ts, GSM_PCHAN_PDCH); |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 925 | } |
| 926 | |
| 927 | /* |
Neels Hofmeyr | 3f22122 | 2016-06-23 22:44:20 +0200 | [diff] [blame] | 928 | * Put a dynamic TCH/F_PDCH channel back to PDCH mode iff it was |
| 929 | * released successfully. If in error, the PDCH ACT will follow after |
| 930 | * T3111 in error_timeout_cb(). |
| 931 | * |
| 932 | * Any state other than LCHAN_S_REL_ERR became LCHAN_S_NONE after above |
| 933 | * do_lchan_free(). Assert this, because that's what ensures a PDCH ACT |
Neels Hofmeyr | c6926d0 | 2016-07-14 02:51:13 +0200 | [diff] [blame] | 934 | * on a TCH/F_PDCH TS in all cases. |
Neels Hofmeyr | 9ddd8e6 | 2016-07-06 14:39:04 +0200 | [diff] [blame] | 935 | * |
| 936 | * If GPRS is disabled, always skip the PDCH ACT. |
Neels Hofmeyr | 3f22122 | 2016-06-23 22:44:20 +0200 | [diff] [blame] | 937 | */ |
| 938 | OSMO_ASSERT(lchan->state == LCHAN_S_NONE |
| 939 | || lchan->state == LCHAN_S_REL_ERR); |
Neels Hofmeyr | 4007468 | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 940 | if (ts->trx->bts->gprs.mode == BTS_GPRS_NONE) |
Neels Hofmeyr | 9ddd8e6 | 2016-07-06 14:39:04 +0200 | [diff] [blame] | 941 | return 0; |
Neels Hofmeyr | 4007468 | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 942 | if (ts->pchan == GSM_PCHAN_TCH_F_PDCH |
Neels Hofmeyr | 82c8f75 | 2016-06-21 20:55:14 +0200 | [diff] [blame] | 943 | && lchan->state == LCHAN_S_NONE) |
Neels Hofmeyr | 4007468 | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 944 | return rsl_ipacc_pdch_activate(ts, 1); |
Harald Welte | 64bb754 | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 945 | return 0; |
| 946 | } |
| 947 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 948 | int rsl_paging_cmd(struct gsm_bts *bts, uint8_t paging_group, uint8_t len, |
| 949 | uint8_t *ms_ident, uint8_t chan_needed) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 950 | { |
| 951 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 952 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 953 | |
| 954 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 955 | init_dchan_hdr(dh, RSL_MT_PAGING_CMD); |
| 956 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 957 | |
| 958 | msgb_tv_put(msg, RSL_IE_PAGING_GROUP, paging_group); |
Harald Welte | 255539c | 2008-12-28 02:26:27 +0000 | [diff] [blame] | 959 | msgb_tlv_put(msg, RSL_IE_MS_IDENTITY, len-2, ms_ident+2); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 960 | msgb_tv_put(msg, RSL_IE_CHAN_NEEDED, chan_needed); |
| 961 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 962 | msg->dst = bts->c0->rsl_link; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 963 | |
| 964 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 965 | } |
| 966 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 967 | int imsi_str2bcd(uint8_t *bcd_out, const char *str_in) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 968 | { |
| 969 | int i, len = strlen(str_in); |
| 970 | |
| 971 | for (i = 0; i < len; i++) { |
| 972 | int num = str_in[i] - 0x30; |
| 973 | if (num < 0 || num > 9) |
| 974 | return -1; |
| 975 | if (i % 2 == 0) |
| 976 | bcd_out[i/2] = num; |
| 977 | else |
| 978 | bcd_out[i/2] |= (num << 4); |
| 979 | } |
| 980 | |
| 981 | return 0; |
| 982 | } |
| 983 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 984 | /* Chapter 8.5.6 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 985 | int rsl_imm_assign_cmd(struct gsm_bts *bts, uint8_t len, uint8_t *val) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 986 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 987 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 988 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 989 | uint8_t buf[MACBLOCK_SIZE]; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 990 | |
| 991 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 992 | init_dchan_hdr(dh, RSL_MT_IMMEDIATE_ASSIGN_CMD); |
| 993 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 994 | |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 995 | switch (bts->type) { |
| 996 | case GSM_BTS_TYPE_BS11: |
| 997 | msgb_tlv_put(msg, RSL_IE_IMM_ASS_INFO, len, val); |
| 998 | break; |
| 999 | default: |
| 1000 | /* If phase 2, construct a FULL_IMM_ASS_INFO */ |
| 1001 | pad_macblock(buf, val, len); |
| 1002 | msgb_tlv_put(msg, RSL_IE_FULL_IMM_ASS_INFO, MACBLOCK_SIZE, buf); |
| 1003 | break; |
| 1004 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1005 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1006 | msg->dst = bts->c0->rsl_link; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1007 | |
| 1008 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1009 | } |
| 1010 | |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 1011 | /* Send Siemens specific MS RF Power Capability Indication */ |
Harald Welte | 31c4893 | 2009-08-10 10:07:33 +0200 | [diff] [blame] | 1012 | int rsl_siemens_mrpci(struct gsm_lchan *lchan, struct rsl_mrpci *mrpci) |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 1013 | { |
| 1014 | struct msgb *msg = rsl_msgb_alloc(); |
| 1015 | struct abis_rsl_dchan_hdr *dh; |
| 1016 | |
| 1017 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 1018 | init_dchan_hdr(dh, RSL_MT_SIEMENS_MRPCI); |
Harald Welte | 3c456d0 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 1019 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1020 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1021 | msgb_tv_put(msg, RSL_IE_SIEMENS_MRPCI, *(uint8_t *)mrpci); |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 1022 | |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1023 | DEBUGP(DRSL, "%s TX Siemens MRPCI 0x%02x\n", |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1024 | gsm_lchan_name(lchan), *(uint8_t *)mrpci); |
Harald Welte | 3c456d0 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 1025 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1026 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 3c456d0 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 1027 | |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 1028 | return abis_rsl_sendmsg(msg); |
| 1029 | } |
| 1030 | |
| 1031 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1032 | /* Send "DATA REQUEST" message with given L3 Info payload */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1033 | /* Chapter 8.3.1 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1034 | int rsl_data_request(struct msgb *msg, uint8_t link_id) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1035 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1036 | if (msg->lchan == NULL) { |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1037 | LOGP(DRSL, LOGL_ERROR, "cannot send DATA REQUEST to unknown lchan\n"); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1038 | return -EINVAL; |
| 1039 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1040 | |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1041 | rsl_rll_push_l3(msg, RSL_MT_DATA_REQ, gsm_lchan2chan_nr(msg->lchan), |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1042 | link_id, 1); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1043 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1044 | msg->dst = msg->lchan->ts->trx->rsl_link; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1045 | |
| 1046 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1047 | } |
| 1048 | |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1049 | /* Send "ESTABLISH REQUEST" message with given L3 Info payload */ |
| 1050 | /* Chapter 8.3.1 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1051 | int rsl_establish_request(struct gsm_lchan *lchan, uint8_t link_id) |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1052 | { |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1053 | struct msgb *msg; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1054 | |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1055 | msg = rsl_rll_simple(RSL_MT_EST_REQ, gsm_lchan2chan_nr(lchan), |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1056 | link_id, 0); |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1057 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1058 | |
Harald Welte | fda74ee | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 1059 | DEBUGP(DRLL, "%s RSL RLL ESTABLISH REQ (link_id=0x%02x)\n", |
| 1060 | gsm_lchan_name(lchan), link_id); |
| 1061 | |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1062 | return abis_rsl_sendmsg(msg); |
| 1063 | } |
| 1064 | |
Andreas Eversberg | 7d8fa34 | 2013-12-05 13:25:06 +0100 | [diff] [blame] | 1065 | static void rsl_handle_release(struct gsm_lchan *lchan); |
| 1066 | |
| 1067 | /* Special work handler to handle missing RSL_MT_REL_CONF message from |
| 1068 | * Nokia InSite BTS */ |
| 1069 | static void lchan_rel_work_cb(void *data) |
| 1070 | { |
| 1071 | struct gsm_lchan *lchan = data; |
| 1072 | int sapi; |
| 1073 | |
| 1074 | for (sapi = 0; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 1075 | if (lchan->sapis[sapi] == LCHAN_SAPI_REL) |
| 1076 | lchan->sapis[sapi] = LCHAN_SAPI_UNUSED; |
| 1077 | } |
| 1078 | rsl_handle_release(lchan); |
| 1079 | } |
| 1080 | |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1081 | /* Chapter 8.3.7 Request the release of multiframe mode of RLL connection. |
| 1082 | This is what higher layers should call. The BTS then responds with |
| 1083 | RELEASE CONFIRM, which we in turn use to trigger RSL CHANNEL RELEASE, |
| 1084 | which in turn is acknowledged by RSL CHANNEL RELEASE ACK, which calls |
| 1085 | lchan_free() */ |
Holger Hans Peter Freyther | 5ca825e | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 1086 | int rsl_release_request(struct gsm_lchan *lchan, uint8_t link_id, |
| 1087 | enum rsl_rel_mode release_mode) |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1088 | { |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1089 | |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1090 | struct msgb *msg; |
| 1091 | |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1092 | msg = rsl_rll_simple(RSL_MT_REL_REQ, gsm_lchan2chan_nr(lchan), |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1093 | link_id, 0); |
Holger Hans Peter Freyther | 4f5848d | 2010-06-08 11:57:45 +0800 | [diff] [blame] | 1094 | /* 0 is normal release, 1 is local end */ |
Holger Hans Peter Freyther | 5ca825e | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 1095 | msgb_tv_put(msg, RSL_IE_RELEASE_MODE, release_mode); |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1096 | |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1097 | /* FIXME: start some timer in case we don't receive a REL ACK ? */ |
| 1098 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1099 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1100 | |
Harald Welte | fda74ee | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 1101 | DEBUGP(DRLL, "%s RSL RLL RELEASE REQ (link_id=0x%02x, reason=%u)\n", |
Holger Hans Peter Freyther | 5ca825e | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 1102 | gsm_lchan_name(lchan), link_id, release_mode); |
Harald Welte | fda74ee | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 1103 | |
Andreas Eversberg | 7d8fa34 | 2013-12-05 13:25:06 +0100 | [diff] [blame] | 1104 | abis_rsl_sendmsg(msg); |
| 1105 | |
| 1106 | /* Do not wait for Nokia BTS to send the confirm. */ |
| 1107 | if (is_nokia_bts(lchan->ts->trx->bts) |
| 1108 | && lchan->ts->trx->bts->nokia.no_loc_rel_cnf |
| 1109 | && release_mode == RSL_REL_LOCAL_END) { |
| 1110 | DEBUGP(DRLL, "Scheduling release, becasuse Nokia InSite BTS does not send a RELease CONFirm.\n"); |
| 1111 | lchan->sapis[link_id & 0x7] = LCHAN_SAPI_REL; |
| 1112 | lchan->rel_work.cb = lchan_rel_work_cb; |
| 1113 | lchan->rel_work.data = lchan; |
| 1114 | osmo_timer_schedule(&lchan->rel_work, 0, 0); |
| 1115 | } |
| 1116 | |
| 1117 | return 0; |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1118 | } |
| 1119 | |
Holger Hans Peter Freyther | 454140e | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1120 | int rsl_lchan_mark_broken(struct gsm_lchan *lchan, const char *reason) |
| 1121 | { |
Neels Hofmeyr | 423269f | 2016-08-24 16:48:00 +0200 | [diff] [blame] | 1122 | LOGP(DRSL, LOGL_ERROR, "%s %s lchan broken: %s\n", |
| 1123 | gsm_lchan_name(lchan), gsm_lchant_name(lchan->type), reason); |
| 1124 | rsl_lchan_set_state(lchan, LCHAN_S_BROKEN); |
Holger Hans Peter Freyther | 454140e | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1125 | lchan->broken_reason = reason; |
| 1126 | return 0; |
| 1127 | } |
| 1128 | |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 1129 | int rsl_lchan_set_state(struct gsm_lchan *lchan, int state) |
| 1130 | { |
Neels Hofmeyr | b0cc642 | 2016-06-21 21:34:46 +0200 | [diff] [blame] | 1131 | DEBUGP(DRSL, "%s state %s -> %s\n", |
| 1132 | gsm_lchan_name(lchan), gsm_lchans_name(lchan->state), |
| 1133 | gsm_lchans_name(state)); |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 1134 | lchan->state = state; |
| 1135 | return 0; |
| 1136 | } |
| 1137 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1138 | /* Chapter 8.4.2: Channel Activate Acknowledge */ |
| 1139 | static int rsl_rx_chan_act_ack(struct msgb *msg) |
| 1140 | { |
| 1141 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Neels Hofmeyr | f29dd5f | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1142 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1143 | |
| 1144 | /* BTS has confirmed channel activation, we now need |
| 1145 | * to assign the activated channel to the MS */ |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1146 | if (rslh->ie_chan != RSL_IE_CHAN_NR) |
| 1147 | return -EINVAL; |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1148 | |
Neels Hofmeyr | f29dd5f | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1149 | osmo_timer_del(&lchan->act_timer); |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 1150 | |
Neels Hofmeyr | f29dd5f | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1151 | if (lchan->state == LCHAN_S_BROKEN) { |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 1152 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK for broken channel.\n", |
Neels Hofmeyr | f29dd5f | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1153 | gsm_lchan_name(lchan)); |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 1154 | return 0; |
| 1155 | } |
| 1156 | |
Neels Hofmeyr | f29dd5f | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1157 | if (lchan->state != LCHAN_S_ACT_REQ) |
Harald Welte | 1887f9d | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1158 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK, but state %s\n", |
Neels Hofmeyr | f29dd5f | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1159 | gsm_lchan_name(lchan), |
| 1160 | gsm_lchans_name(lchan->state)); |
| 1161 | rsl_lchan_set_state(lchan, LCHAN_S_ACTIVE); |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1162 | |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 1163 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH) |
| 1164 | dyn_ts_switchover_complete(lchan); |
| 1165 | |
Neels Hofmeyr | f29dd5f | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1166 | if (lchan->rqd_ref) { |
| 1167 | rsl_send_imm_assignment(lchan); |
| 1168 | talloc_free(lchan->rqd_ref); |
| 1169 | lchan->rqd_ref = NULL; |
| 1170 | lchan->rqd_ta = 0; |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1171 | } |
| 1172 | |
Neels Hofmeyr | f29dd5f | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1173 | send_lchan_signal(S_LCHAN_ACTIVATE_ACK, lchan, NULL); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1174 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1175 | return 0; |
| 1176 | } |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1177 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1178 | /* Chapter 8.4.3: Channel Activate NACK */ |
| 1179 | static int rsl_rx_chan_act_nack(struct msgb *msg) |
| 1180 | { |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 1181 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1182 | struct tlv_parsed tp; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1183 | |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 1184 | osmo_timer_del(&msg->lchan->act_timer); |
| 1185 | |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 1186 | if (msg->lchan->state == LCHAN_S_BROKEN) { |
| 1187 | LOGP(DRSL, LOGL_ERROR, |
| 1188 | "%s CHANNEL ACTIVATE NACK for broken channel.\n", |
| 1189 | gsm_lchan_name(msg->lchan)); |
| 1190 | return -1; |
| 1191 | } |
| 1192 | |
Daniel Willmann | 6fc6a12 | 2011-08-11 04:54:23 +0200 | [diff] [blame] | 1193 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL ACTIVATE NACK ", |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1194 | gsm_lchan_name(msg->lchan)); |
Harald Welte (local) | 91b603d | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 1195 | |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 1196 | /* BTS has rejected channel activation ?!? */ |
| 1197 | if (dh->ie_chan != RSL_IE_CHAN_NR) |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1198 | return -EINVAL; |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 1199 | |
| 1200 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1201 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1202 | const uint8_t *cause = TLVP_VAL(&tp, RSL_IE_CAUSE); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1203 | print_rsl_cause(LOGL_ERROR, cause, |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1204 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
Holger Hans Peter Freyther | 638da51 | 2012-12-06 19:25:06 +0100 | [diff] [blame] | 1205 | msg->lchan->error_cause = *cause; |
Holger Hans Peter Freyther | 454140e | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1206 | if (*cause != RSL_ERR_RCH_ALR_ACTV_ALLOC) { |
| 1207 | rsl_lchan_mark_broken(msg->lchan, "NACK on activation"); |
| 1208 | } else |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1209 | rsl_rf_chan_release(msg->lchan, 1, SACCH_DEACTIVATE); |
Daniel Willmann | 7ddc318 | 2011-08-11 04:47:11 +0200 | [diff] [blame] | 1210 | |
Holger Hans Peter Freyther | 454140e | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1211 | } else { |
| 1212 | rsl_lchan_mark_broken(msg->lchan, "NACK on activation no IE"); |
| 1213 | } |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1214 | |
Harald Welte (local) | 91b603d | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 1215 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
| 1216 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1217 | send_lchan_signal(S_LCHAN_ACTIVATE_NACK, msg->lchan, NULL); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1218 | return 0; |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1219 | } |
| 1220 | |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 1221 | /* Chapter 8.4.4: Connection Failure Indication */ |
| 1222 | static int rsl_rx_conn_fail(struct msgb *msg) |
| 1223 | { |
| 1224 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1225 | struct tlv_parsed tp; |
| 1226 | |
Holger Hans Peter Freyther | 1e93b79 | 2014-04-19 16:45:36 +0200 | [diff] [blame] | 1227 | LOGP(DRSL, LOGL_NOTICE, "%s CONNECTION FAIL: RELEASING state %s ", |
| 1228 | gsm_lchan_name(msg->lchan), |
| 1229 | gsm_lchans_name(msg->lchan->state)); |
| 1230 | |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 1231 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1232 | |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1233 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1234 | print_rsl_cause(LOGL_NOTICE, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1235 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1236 | |
Harald Welte (local) | fc05750 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 1237 | LOGPC(DRSL, LOGL_NOTICE, "\n"); |
Alexander Couzens | b847a21 | 2016-08-02 11:34:11 +0200 | [diff] [blame] | 1238 | rate_ctr_inc(&msg->lchan->ts->trx->bts->network->bsc_ctrs->ctr[BSC_CTR_CHAN_RF_FAIL]); |
Holger Hans Peter Freyther | 0e4e73a | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 1239 | return rsl_rf_chan_release_err(msg->lchan); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 1240 | } |
| 1241 | |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1242 | static void print_meas_rep_uni(struct gsm_meas_rep_unidir *mru, |
| 1243 | const char *prefix) |
| 1244 | { |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1245 | DEBUGPC(DMEAS, "RXL-FULL-%s=%3ddBm RXL-SUB-%s=%3ddBm ", |
| 1246 | prefix, rxlev2dbm(mru->full.rx_lev), |
| 1247 | prefix, rxlev2dbm(mru->sub.rx_lev)); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1248 | DEBUGPC(DMEAS, "RXQ-FULL-%s=%d RXQ-SUB-%s=%d ", |
| 1249 | prefix, mru->full.rx_qual, prefix, mru->sub.rx_qual); |
| 1250 | } |
| 1251 | |
Harald Welte | 0c1bd61 | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1252 | static void print_meas_rep(struct gsm_lchan *lchan, struct gsm_meas_rep *mr) |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1253 | { |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1254 | int i; |
Harald Welte | 0c1bd61 | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1255 | char *name = ""; |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1256 | |
Harald Welte | 7184bd0 | 2015-12-28 14:04:36 +0100 | [diff] [blame] | 1257 | if (lchan && lchan->conn) |
Harald Welte | 0c1bd61 | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1258 | name = subscr_name(lchan->conn->subscr); |
| 1259 | |
| 1260 | DEBUGP(DMEAS, "[%s] MEASUREMENT RESULT NR=%d ", name, mr->nr); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1261 | |
| 1262 | if (mr->flags & MEAS_REP_F_DL_DTX) |
| 1263 | DEBUGPC(DMEAS, "DTXd "); |
| 1264 | |
| 1265 | print_meas_rep_uni(&mr->ul, "ul"); |
| 1266 | DEBUGPC(DMEAS, "BS_POWER=%d ", mr->bs_power); |
| 1267 | if (mr->flags & MEAS_REP_F_MS_TO) |
| 1268 | DEBUGPC(DMEAS, "MS_TO=%d ", mr->ms_timing_offset); |
| 1269 | |
| 1270 | if (mr->flags & MEAS_REP_F_MS_L1) { |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1271 | DEBUGPC(DMEAS, "L1_MS_PWR=%3ddBm ", mr->ms_l1.pwr); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1272 | DEBUGPC(DMEAS, "L1_FPC=%u ", |
| 1273 | mr->flags & MEAS_REP_F_FPC ? 1 : 0); |
| 1274 | DEBUGPC(DMEAS, "L1_TA=%u ", mr->ms_l1.ta); |
| 1275 | } |
| 1276 | |
| 1277 | if (mr->flags & MEAS_REP_F_UL_DTX) |
| 1278 | DEBUGPC(DMEAS, "DTXu "); |
| 1279 | if (mr->flags & MEAS_REP_F_BA1) |
| 1280 | DEBUGPC(DMEAS, "BA1 "); |
| 1281 | if (!(mr->flags & MEAS_REP_F_DL_VALID)) |
| 1282 | DEBUGPC(DMEAS, "NOT VALID "); |
| 1283 | else |
| 1284 | print_meas_rep_uni(&mr->dl, "dl"); |
| 1285 | |
| 1286 | DEBUGPC(DMEAS, "NUM_NEIGH=%u\n", mr->num_cell); |
Harald Welte | 479015b | 2009-12-19 18:33:05 +0100 | [diff] [blame] | 1287 | if (mr->num_cell == 7) |
| 1288 | return; |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1289 | for (i = 0; i < mr->num_cell; i++) { |
| 1290 | struct gsm_meas_rep_cell *mrc = &mr->cell[i]; |
Harald Welte | 303e5e0 | 2009-12-25 23:02:22 +0100 | [diff] [blame] | 1291 | DEBUGP(DMEAS, "IDX=%u ARFCN=%u BSIC=%u => %d dBm\n", |
| 1292 | mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev)); |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1293 | } |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1294 | } |
| 1295 | |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1296 | static int rsl_rx_meas_res(struct msgb *msg) |
| 1297 | { |
| 1298 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1299 | struct tlv_parsed tp; |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1300 | struct gsm_meas_rep *mr = lchan_next_meas_rep(msg->lchan); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1301 | uint8_t len; |
| 1302 | const uint8_t *val; |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1303 | int rc; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1304 | |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1305 | /* check if this channel is actually active */ |
| 1306 | /* FIXME: maybe this check should be way more generic/centralized */ |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1307 | if (msg->lchan->state != LCHAN_S_ACTIVE) { |
Holger Hans Peter Freyther | c44db4a | 2010-07-29 14:50:57 +0800 | [diff] [blame] | 1308 | LOGP(DRSL, LOGL_DEBUG, "%s: MEAS RES for inactive channel\n", |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1309 | gsm_lchan_name(msg->lchan)); |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1310 | return 0; |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1311 | } |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1312 | |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1313 | memset(mr, 0, sizeof(*mr)); |
Harald Welte | 33e6597 | 2009-12-16 23:29:34 +0100 | [diff] [blame] | 1314 | mr->lchan = msg->lchan; |
Harald Welte | dbb1d88 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 1315 | |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1316 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1317 | |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1318 | if (!TLVP_PRESENT(&tp, RSL_IE_MEAS_RES_NR) || |
| 1319 | !TLVP_PRESENT(&tp, RSL_IE_UPLINK_MEAS) || |
| 1320 | !TLVP_PRESENT(&tp, RSL_IE_BS_POWER)) |
| 1321 | return -EIO; |
| 1322 | |
| 1323 | /* Mandatory Parts */ |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1324 | mr->nr = *TLVP_VAL(&tp, RSL_IE_MEAS_RES_NR); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1325 | |
| 1326 | len = TLVP_LEN(&tp, RSL_IE_UPLINK_MEAS); |
| 1327 | val = TLVP_VAL(&tp, RSL_IE_UPLINK_MEAS); |
| 1328 | if (len >= 3) { |
| 1329 | if (val[0] & 0x40) |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1330 | mr->flags |= MEAS_REP_F_DL_DTX; |
| 1331 | mr->ul.full.rx_lev = val[0] & 0x3f; |
| 1332 | mr->ul.sub.rx_lev = val[1] & 0x3f; |
| 1333 | mr->ul.full.rx_qual = val[2]>>3 & 0x7; |
| 1334 | mr->ul.sub.rx_qual = val[2] & 0x7; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1335 | } |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1336 | |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1337 | mr->bs_power = *TLVP_VAL(&tp, RSL_IE_BS_POWER); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1338 | |
| 1339 | /* Optional Parts */ |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1340 | if (TLVP_PRESENT(&tp, RSL_IE_MS_TIMING_OFFSET)) |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1341 | mr->ms_timing_offset = |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1342 | *TLVP_VAL(&tp, RSL_IE_MS_TIMING_OFFSET); |
| 1343 | |
Harald Welte | fe9af26 | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 1344 | if (TLVP_PRESENT(&tp, RSL_IE_L1_INFO)) { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1345 | struct e1inp_sign_link *sign_link = msg->dst; |
| 1346 | |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1347 | val = TLVP_VAL(&tp, RSL_IE_L1_INFO); |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1348 | mr->flags |= MEAS_REP_F_MS_L1; |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1349 | mr->ms_l1.pwr = ms_pwr_dbm(sign_link->trx->bts->band, val[0] >> 3); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1350 | if (val[0] & 0x04) |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1351 | mr->flags |= MEAS_REP_F_FPC; |
| 1352 | mr->ms_l1.ta = val[1]; |
Andreas Eversberg | 3365cd1 | 2011-12-24 11:49:05 +0100 | [diff] [blame] | 1353 | /* BS11 and Nokia reports TA shifted by 2 bits */ |
| 1354 | if (msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_BS11 |
| 1355 | || msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_NOKIA_SITE) |
Andreas Eversberg | 2957de9 | 2011-12-16 17:45:37 +0100 | [diff] [blame] | 1356 | mr->ms_l1.ta >>= 2; |
Harald Welte | fe9af26 | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 1357 | } |
Harald Welte | f7c4352 | 2009-06-09 20:24:21 +0000 | [diff] [blame] | 1358 | if (TLVP_PRESENT(&tp, RSL_IE_L3_INFO)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1359 | msg->l3h = (uint8_t *) TLVP_VAL(&tp, RSL_IE_L3_INFO); |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1360 | rc = gsm48_parse_meas_rep(mr, msg); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1361 | if (rc < 0) |
| 1362 | return rc; |
| 1363 | } |
| 1364 | |
Harald Welte | 0c1bd61 | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1365 | print_meas_rep(msg->lchan, mr); |
Harald Welte | 60d68f1 | 2009-06-05 20:07:43 +0000 | [diff] [blame] | 1366 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1367 | send_lchan_signal(S_LCHAN_MEAS_REP, msg->lchan, mr); |
Harald Welte | dbb1d88 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 1368 | |
Harald Welte | 75d34a8 | 2009-05-23 06:11:13 +0000 | [diff] [blame] | 1369 | return 0; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1370 | } |
| 1371 | |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1372 | /* Chapter 8.4.7 */ |
| 1373 | static int rsl_rx_hando_det(struct msgb *msg) |
| 1374 | { |
| 1375 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1376 | struct tlv_parsed tp; |
| 1377 | |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1378 | DEBUGP(DRSL, "%s HANDOVER DETECT ", gsm_lchan_name(msg->lchan)); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1379 | |
| 1380 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1381 | |
| 1382 | if (TLVP_PRESENT(&tp, RSL_IE_ACCESS_DELAY)) |
| 1383 | DEBUGPC(DRSL, "access delay = %u\n", |
| 1384 | *TLVP_VAL(&tp, RSL_IE_ACCESS_DELAY)); |
| 1385 | else |
| 1386 | DEBUGPC(DRSL, "\n"); |
| 1387 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1388 | send_lchan_signal(S_LCHAN_HANDOVER_DETECT, msg->lchan, NULL); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1389 | |
| 1390 | return 0; |
| 1391 | } |
| 1392 | |
Neels Hofmeyr | 285df2e | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1393 | static bool lchan_may_change_pdch(struct gsm_lchan *lchan, bool pdch_act) |
| 1394 | { |
| 1395 | struct gsm_bts_trx_ts *ts; |
Neels Hofmeyr | 285df2e | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1396 | |
| 1397 | OSMO_ASSERT(lchan); |
| 1398 | |
| 1399 | ts = lchan->ts; |
| 1400 | OSMO_ASSERT(ts); |
| 1401 | OSMO_ASSERT(ts->trx); |
| 1402 | OSMO_ASSERT(ts->trx->bts); |
| 1403 | |
| 1404 | if (lchan->ts->pchan != GSM_PCHAN_TCH_F_PDCH) { |
Neels Hofmeyr | dd49bee | 2016-06-21 20:53:27 +0200 | [diff] [blame] | 1405 | LOGP(DRSL, LOGL_ERROR, "%s pchan=%s Rx PDCH %s ACK" |
| 1406 | " for channel that is no TCH/F_PDCH\n", |
| 1407 | gsm_lchan_name(lchan), |
Neels Hofmeyr | 285df2e | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1408 | gsm_pchan_name(ts->pchan), |
| 1409 | pdch_act? "ACT" : "DEACT"); |
| 1410 | return false; |
| 1411 | } |
| 1412 | |
Neels Hofmeyr | 832afa3 | 2016-06-14 13:12:00 +0200 | [diff] [blame] | 1413 | if (lchan->state != LCHAN_S_NONE) { |
Neels Hofmeyr | dd49bee | 2016-06-21 20:53:27 +0200 | [diff] [blame] | 1414 | LOGP(DRSL, LOGL_ERROR, "%s pchan=%s Rx PDCH %s ACK" |
| 1415 | " in unexpected state: %s\n", |
| 1416 | gsm_lchan_name(lchan), |
Neels Hofmeyr | 285df2e | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1417 | gsm_pchan_name(ts->pchan), |
| 1418 | pdch_act? "ACT" : "DEACT", |
| 1419 | gsm_lchans_name(lchan->state)); |
| 1420 | return false; |
| 1421 | } |
| 1422 | return true; |
| 1423 | } |
| 1424 | |
Andreas Eversberg | 9df268e | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1425 | static int rsl_rx_pdch_act_ack(struct msgb *msg) |
| 1426 | { |
Neels Hofmeyr | 285df2e | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1427 | if (!lchan_may_change_pdch(msg->lchan, true)) |
| 1428 | return -EINVAL; |
| 1429 | |
Neels Hofmeyr | 2ebacce | 2016-06-14 14:08:35 +0200 | [diff] [blame] | 1430 | msg->lchan->ts->flags |= TS_F_PDCH_ACTIVE; |
Neels Hofmeyr | 3201988 | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 1431 | msg->lchan->ts->flags &= ~TS_F_PDCH_ACT_PENDING; |
Andreas Eversberg | 9df268e | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1432 | |
Andreas Eversberg | 9df268e | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1433 | return 0; |
| 1434 | } |
| 1435 | |
| 1436 | static int rsl_rx_pdch_deact_ack(struct msgb *msg) |
| 1437 | { |
Neels Hofmeyr | 285df2e | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1438 | if (!lchan_may_change_pdch(msg->lchan, false)) |
| 1439 | return -EINVAL; |
| 1440 | |
Neels Hofmeyr | 2ebacce | 2016-06-14 14:08:35 +0200 | [diff] [blame] | 1441 | msg->lchan->ts->flags &= ~TS_F_PDCH_ACTIVE; |
Neels Hofmeyr | 3201988 | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 1442 | msg->lchan->ts->flags &= ~TS_F_PDCH_DEACT_PENDING; |
Andreas Eversberg | 9df268e | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1443 | |
Neels Hofmeyr | 6e999b7 | 2016-07-23 21:00:51 +0200 | [diff] [blame] | 1444 | rsl_chan_activate_lchan(msg->lchan, msg->lchan->dyn.act_type, |
| 1445 | msg->lchan->dyn.ho_ref); |
Andreas Eversberg | 9df268e | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1446 | |
| 1447 | return 0; |
| 1448 | } |
| 1449 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1450 | static int abis_rsl_rx_dchan(struct msgb *msg) |
| 1451 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1452 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1453 | int rc = 0; |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1454 | char *ts_name; |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1455 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1456 | |
Neels Hofmeyr | 2867f88 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 1457 | msg->lchan = lchan_lookup(sign_link->trx, rslh->chan_nr, |
| 1458 | "Abis RSL rx DCHAN: "); |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1459 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1460 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1461 | switch (rslh->c.msg_type) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1462 | case RSL_MT_CHAN_ACTIV_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1463 | DEBUGP(DRSL, "%s CHANNEL ACTIVATE ACK\n", ts_name); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1464 | rc = rsl_rx_chan_act_ack(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1465 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1466 | case RSL_MT_CHAN_ACTIV_NACK: |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1467 | rc = rsl_rx_chan_act_nack(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1468 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1469 | case RSL_MT_CONN_FAIL: |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 1470 | rc = rsl_rx_conn_fail(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1471 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1472 | case RSL_MT_MEAS_RES: |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1473 | rc = rsl_rx_meas_res(msg); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1474 | break; |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1475 | case RSL_MT_HANDO_DET: |
| 1476 | rc = rsl_rx_hando_det(msg); |
| 1477 | break; |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1478 | case RSL_MT_RF_CHAN_REL_ACK: |
Harald Welte | 64bb754 | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 1479 | rc = rsl_rx_rf_chan_rel_ack(msg->lchan); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1480 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1481 | case RSL_MT_MODE_MODIFY_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1482 | DEBUGP(DRSL, "%s CHANNEL MODE MODIFY ACK\n", ts_name); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 1483 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1484 | case RSL_MT_MODE_MODIFY_NACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1485 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL MODE MODIFY NACK\n", ts_name); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 1486 | break; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1487 | case RSL_MT_IPAC_PDCH_ACT_ACK: |
Neels Hofmeyr | 9f5d231 | 2016-05-31 17:51:41 +0200 | [diff] [blame] | 1488 | DEBUGP(DRSL, "%s IPAC PDCH ACT ACK\n", ts_name); |
Andreas Eversberg | 9df268e | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1489 | rc = rsl_rx_pdch_act_ack(msg); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1490 | break; |
| 1491 | case RSL_MT_IPAC_PDCH_ACT_NACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1492 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH ACT NACK\n", ts_name); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1493 | break; |
| 1494 | case RSL_MT_IPAC_PDCH_DEACT_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1495 | DEBUGP(DRSL, "%s IPAC PDCH DEACT ACK\n", ts_name); |
Andreas Eversberg | 9df268e | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1496 | rc = rsl_rx_pdch_deact_ack(msg); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1497 | break; |
| 1498 | case RSL_MT_IPAC_PDCH_DEACT_NACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1499 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH DEACT NACK\n", ts_name); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1500 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1501 | case RSL_MT_PHY_CONTEXT_CONF: |
| 1502 | case RSL_MT_PREPROC_MEAS_RES: |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1503 | case RSL_MT_TALKER_DET: |
| 1504 | case RSL_MT_LISTENER_DET: |
| 1505 | case RSL_MT_REMOTE_CODEC_CONF_REP: |
| 1506 | case RSL_MT_MR_CODEC_MOD_ACK: |
| 1507 | case RSL_MT_MR_CODEC_MOD_NACK: |
| 1508 | case RSL_MT_MR_CODEC_MOD_PER: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1509 | LOGP(DRSL, LOGL_NOTICE, "%s Unimplemented Abis RSL DChan " |
| 1510 | "msg 0x%02x\n", ts_name, rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1511 | break; |
| 1512 | default: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1513 | LOGP(DRSL, LOGL_NOTICE, "%s unknown Abis RSL DChan msg 0x%02x\n", |
| 1514 | ts_name, rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1515 | return -EINVAL; |
| 1516 | } |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1517 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1518 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1519 | } |
| 1520 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1521 | static int rsl_rx_error_rep(struct msgb *msg) |
| 1522 | { |
| 1523 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1524 | struct tlv_parsed tp; |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1525 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1526 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1527 | LOGP(DRSL, LOGL_ERROR, "%s ERROR REPORT ", gsm_trx_name(sign_link->trx)); |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1528 | |
| 1529 | rsl_tlv_parse(&tp, rslh->data, msgb_l2len(msg)-sizeof(*rslh)); |
| 1530 | |
| 1531 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1532 | print_rsl_cause(LOGL_ERROR, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1533 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1534 | |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1535 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1536 | |
| 1537 | return 0; |
| 1538 | } |
| 1539 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1540 | static int abis_rsl_rx_trx(struct msgb *msg) |
| 1541 | { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1542 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1543 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1544 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1545 | |
| 1546 | switch (rslh->msg_type) { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1547 | case RSL_MT_ERROR_REPORT: |
| 1548 | rc = rsl_rx_error_rep(msg); |
| 1549 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1550 | case RSL_MT_RF_RES_IND: |
| 1551 | /* interference on idle channels of TRX */ |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1552 | //DEBUGP(DRSL, "%s RF Resource Indication\n", gsm_trx_name(sign_link->trx)); |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 1553 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1554 | case RSL_MT_OVERLOAD: |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1555 | /* indicate CCCH / ACCH / processor overload */ |
Harald Welte (local) | d48f4eb | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1556 | LOGP(DRSL, LOGL_ERROR, "%s CCCH/ACCH/CPU Overload\n", |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1557 | gsm_trx_name(sign_link->trx)); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1558 | break; |
Dieter Spaar | 1664602 | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 1559 | case 0x42: /* Nokia specific: SI End ACK */ |
| 1560 | LOGP(DRSL, LOGL_INFO, "Nokia SI End ACK\n"); |
| 1561 | break; |
| 1562 | case 0x43: /* Nokia specific: SI End NACK */ |
| 1563 | LOGP(DRSL, LOGL_INFO, "Nokia SI End NACK\n"); |
| 1564 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1565 | default: |
Harald Welte (local) | d48f4eb | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1566 | LOGP(DRSL, LOGL_NOTICE, "%s Unknown Abis RSL TRX message " |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1567 | "type 0x%02x\n", gsm_trx_name(sign_link->trx), rslh->msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1568 | return -EINVAL; |
| 1569 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1570 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1571 | } |
| 1572 | |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1573 | /* If T3101 expires, we never received a response to IMMEDIATE ASSIGN */ |
| 1574 | static void t3101_expired(void *data) |
| 1575 | { |
| 1576 | struct gsm_lchan *lchan = data; |
| 1577 | |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1578 | rsl_rf_chan_release(lchan, 1, SACCH_DEACTIVATE); |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1579 | } |
| 1580 | |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1581 | /* If T3111 expires, we will send the RF Channel Request */ |
| 1582 | static void t3111_expired(void *data) |
| 1583 | { |
| 1584 | struct gsm_lchan *lchan = data; |
| 1585 | |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1586 | rsl_rf_chan_release(lchan, 0, SACCH_NONE); |
| 1587 | } |
| 1588 | |
| 1589 | /* If T3109 expires the MS has not send a UA/UM do the error release */ |
| 1590 | static void t3109_expired(void *data) |
| 1591 | { |
| 1592 | struct gsm_lchan *lchan = data; |
| 1593 | |
| 1594 | LOGP(DRSL, LOGL_ERROR, |
| 1595 | "%s SACCH deactivation timeout.\n", gsm_lchan_name(lchan)); |
| 1596 | rsl_rf_chan_release(lchan, 1, SACCH_NONE); |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1597 | } |
| 1598 | |
Harald Welte | 2862dca | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1599 | /* Format an IMM ASS REJ according to 04.08 Chapter 9.1.20 */ |
| 1600 | static int rsl_send_imm_ass_rej(struct gsm_bts *bts, |
| 1601 | unsigned int num_req_refs, |
| 1602 | struct gsm48_req_ref *rqd_refs, |
| 1603 | uint8_t wait_ind) |
| 1604 | { |
| 1605 | uint8_t buf[GSM_MACBLOCK_LEN]; |
| 1606 | struct gsm48_imm_ass_rej *iar = (struct gsm48_imm_ass_rej *)buf; |
| 1607 | |
| 1608 | /* create IMMEDIATE ASSIGN REJECT 04.08 message */ |
| 1609 | memset(iar, 0, sizeof(*iar)); |
| 1610 | iar->proto_discr = GSM48_PDISC_RR; |
Andreas Eversberg | 75e13a4 | 2013-02-07 11:51:16 +0100 | [diff] [blame] | 1611 | iar->msg_type = GSM48_MT_RR_IMM_ASS_REJ; |
Harald Welte | 2862dca | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1612 | iar->page_mode = GSM48_PM_SAME; |
| 1613 | |
| 1614 | memcpy(&iar->req_ref1, &rqd_refs[0], sizeof(iar->req_ref1)); |
| 1615 | iar->wait_ind1 = wait_ind; |
| 1616 | |
| 1617 | if (num_req_refs >= 2) |
| 1618 | memcpy(&iar->req_ref2, &rqd_refs[1], sizeof(iar->req_ref2)); |
| 1619 | else |
| 1620 | memcpy(&iar->req_ref2, &rqd_refs[0], sizeof(iar->req_ref2)); |
| 1621 | iar->wait_ind2 = wait_ind; |
| 1622 | |
| 1623 | if (num_req_refs >= 3) |
| 1624 | memcpy(&iar->req_ref3, &rqd_refs[2], sizeof(iar->req_ref3)); |
| 1625 | else |
| 1626 | memcpy(&iar->req_ref3, &rqd_refs[0], sizeof(iar->req_ref3)); |
| 1627 | iar->wait_ind3 = wait_ind; |
| 1628 | |
| 1629 | if (num_req_refs >= 4) |
| 1630 | memcpy(&iar->req_ref4, &rqd_refs[3], sizeof(iar->req_ref4)); |
| 1631 | else |
| 1632 | memcpy(&iar->req_ref4, &rqd_refs[0], sizeof(iar->req_ref4)); |
| 1633 | iar->wait_ind4 = wait_ind; |
| 1634 | |
Andreas Eversberg | 75e13a4 | 2013-02-07 11:51:16 +0100 | [diff] [blame] | 1635 | /* we need to subtract 1 byte from sizeof(*iar) since ia includes the l2_plen field */ |
| 1636 | iar->l2_plen = GSM48_LEN2PLEN((sizeof(*iar)-1)); |
| 1637 | |
| 1638 | return rsl_imm_assign_cmd(bts, sizeof(*iar), (uint8_t *) iar); |
Harald Welte | 2862dca | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1639 | } |
| 1640 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1641 | /* MS has requested a channel on the RACH */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1642 | static int rsl_rx_chan_rqd(struct msgb *msg) |
| 1643 | { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1644 | struct e1inp_sign_link *sign_link = msg->dst; |
| 1645 | struct gsm_bts *bts = sign_link->trx->bts; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1646 | struct abis_rsl_dchan_hdr *rqd_hdr = msgb_l2(msg); |
| 1647 | struct gsm48_req_ref *rqd_ref; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1648 | enum gsm_chan_t lctype; |
Harald Welte | 2cbe092 | 2008-12-29 04:09:31 +0000 | [diff] [blame] | 1649 | enum gsm_chreq_reason_t chreq_reason; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1650 | struct gsm_lchan *lchan; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1651 | uint8_t rqd_ta; |
Holger Hans Peter Freyther | 457c2a8 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1652 | int is_lu; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1653 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1654 | uint16_t arfcn; |
Holger Hans Peter Freyther | c6d0a17 | 2012-02-03 20:10:13 +0100 | [diff] [blame] | 1655 | uint8_t subch; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1656 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1657 | /* parse request reference to be used in immediate assign */ |
| 1658 | if (rqd_hdr->data[0] != RSL_IE_REQ_REFERENCE) |
| 1659 | return -EINVAL; |
| 1660 | |
| 1661 | rqd_ref = (struct gsm48_req_ref *) &rqd_hdr->data[1]; |
| 1662 | |
| 1663 | /* parse access delay and use as TA */ |
| 1664 | if (rqd_hdr->data[sizeof(struct gsm48_req_ref)+1] != RSL_IE_ACCESS_DELAY) |
| 1665 | return -EINVAL; |
| 1666 | rqd_ta = rqd_hdr->data[sizeof(struct gsm48_req_ref)+2]; |
| 1667 | |
| 1668 | /* determine channel type (SDCCH/TCH_F/TCH_H) based on |
| 1669 | * request reference RA */ |
Holger Hans Peter Freyther | 7889107 | 2010-09-06 09:36:02 +0800 | [diff] [blame] | 1670 | lctype = get_ctype_by_chreq(bts->network, rqd_ref->ra); |
| 1671 | chreq_reason = get_reason_by_chreq(rqd_ref->ra, bts->network->neci); |
Harald Welte | 2cbe092 | 2008-12-29 04:09:31 +0000 | [diff] [blame] | 1672 | |
Alexander Couzens | b847a21 | 2016-08-02 11:34:11 +0200 | [diff] [blame] | 1673 | rate_ctr_inc(&bts->network->bsc_ctrs->ctr[BSC_CTR_CHREQ_TOTAL]); |
Harald Welte | 24ff6ee | 2009-12-22 00:41:05 +0100 | [diff] [blame] | 1674 | |
Holger Hans Peter Freyther | 457c2a8 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1675 | /* |
| 1676 | * We want LOCATION UPDATES to succeed and will assign a TCH |
| 1677 | * if we have no SDCCH available. |
| 1678 | */ |
| 1679 | is_lu = !!(chreq_reason == GSM_CHREQ_REASON_LOCATION_UPD); |
| 1680 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1681 | /* check availability / allocate channel */ |
Holger Hans Peter Freyther | 457c2a8 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1682 | lchan = lchan_alloc(bts, lctype, is_lu); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1683 | if (!lchan) { |
Harald Welte (local) | 2f5df85 | 2009-12-27 13:48:09 +0100 | [diff] [blame] | 1684 | LOGP(DRSL, LOGL_NOTICE, "BTS %d CHAN RQD: no resources for %s 0x%x\n", |
Harald Welte (local) | ccd8845 | 2009-12-27 18:05:25 +0100 | [diff] [blame] | 1685 | msg->lchan->ts->trx->bts->nr, gsm_lchant_name(lctype), rqd_ref->ra); |
Alexander Couzens | b847a21 | 2016-08-02 11:34:11 +0200 | [diff] [blame] | 1686 | rate_ctr_inc(&bts->network->bsc_ctrs->ctr[BSC_CTR_CHREQ_NO_CHANNEL]); |
Harald Welte | 2862dca | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1687 | /* FIXME gather multiple CHAN RQD and reject up to 4 at the same time */ |
| 1688 | if (bts->network->T3122) |
| 1689 | rsl_send_imm_ass_rej(bts, 1, rqd_ref, bts->network->T3122 & 0xff); |
Harald Welte | 1dcc260 | 2012-11-13 04:46:03 +0100 | [diff] [blame] | 1690 | return 0; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1691 | } |
| 1692 | |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 1693 | /* |
| 1694 | * Expecting lchan state to be NONE, except for dyn TS in PDCH mode. |
| 1695 | * Those are expected to be ACTIVE: the PDCH release will be sent from |
| 1696 | * rsl_chan_activate_lchan() below. |
| 1697 | */ |
| 1698 | if (lchan->state != LCHAN_S_NONE |
| 1699 | && !(lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH |
| 1700 | && lchan->ts->dyn.pchan_is == GSM_PCHAN_PDCH |
| 1701 | && lchan->state == LCHAN_S_ACTIVE)) |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1702 | LOGP(DRSL, LOGL_NOTICE, "%s lchan_alloc() returned channel " |
Harald Welte | 1887f9d | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1703 | "in state %s\n", gsm_lchan_name(lchan), |
| 1704 | gsm_lchans_name(lchan->state)); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1705 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1706 | /* save the RACH data as we need it after the CHAN ACT ACK */ |
| 1707 | lchan->rqd_ref = talloc_zero(bts, struct gsm48_req_ref); |
| 1708 | if (!lchan->rqd_ref) { |
| 1709 | LOGP(DRSL, LOGL_ERROR, "Failed to allocate gsm48_req_ref.\n"); |
| 1710 | lchan_free(lchan); |
| 1711 | return -ENOMEM; |
| 1712 | } |
| 1713 | |
| 1714 | memcpy(lchan->rqd_ref, rqd_ref, sizeof(*rqd_ref)); |
| 1715 | lchan->rqd_ta = rqd_ta; |
| 1716 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1717 | arfcn = lchan->ts->trx->arfcn; |
| 1718 | subch = lchan->nr; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1719 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 1720 | lchan->encr.alg_id = RSL_ENC_ALG_A5(0); /* no encryption */ |
Harald Welte (local) | 0e451d0 | 2009-08-13 10:14:26 +0200 | [diff] [blame] | 1721 | lchan->ms_power = ms_pwr_ctl_lvl(bts->band, bts->ms_max_power); |
Harald Welte | 0b2124b | 2009-08-10 00:45:40 +0200 | [diff] [blame] | 1722 | lchan->bs_power = 0; /* 0dB reduction, output power = Pn */ |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 1723 | lchan->rsl_cmode = RSL_CMOD_SPD_SIGN; |
Harald Welte | 196d052 | 2009-08-28 23:28:28 +0900 | [diff] [blame] | 1724 | lchan->tch_mode = GSM48_CMODE_SIGN; |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1725 | |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 1726 | /* Start another timer or assume the BTS sends a ACK/NACK? */ |
| 1727 | lchan->act_timer.cb = lchan_act_tmr_cb; |
| 1728 | lchan->act_timer.data = lchan; |
| 1729 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 1730 | |
Andreas Eversberg | 2957de9 | 2011-12-16 17:45:37 +0100 | [diff] [blame] | 1731 | DEBUGP(DRSL, "%s Activating ARFCN(%u) SS(%u) lctype %s " |
| 1732 | "r=%s ra=0x%02x ta=%d\n", gsm_lchan_name(lchan), arfcn, subch, |
| 1733 | gsm_lchant_name(lchan->type), gsm_chreq_name(chreq_reason), |
| 1734 | rqd_ref->ra, rqd_ta); |
| 1735 | |
Neels Hofmeyr | 8151648 | 2016-07-15 01:26:03 +0200 | [diff] [blame] | 1736 | rsl_chan_activate_lchan(lchan, RSL_ACT_INTRA_IMM_ASS, 0); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1737 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1738 | return 0; |
| 1739 | } |
| 1740 | |
| 1741 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan) |
| 1742 | { |
| 1743 | struct gsm_bts *bts = lchan->ts->trx->bts; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1744 | uint8_t buf[GSM_MACBLOCK_LEN]; |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1745 | struct gsm48_imm_ass *ia = (struct gsm48_imm_ass *) buf; |
| 1746 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1747 | /* create IMMEDIATE ASSIGN 04.08 messge */ |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1748 | memset(ia, 0, sizeof(*ia)); |
laforge | cfa4a01 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1749 | /* we set ia->l2_plen once we know the length of the MA below */ |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1750 | ia->proto_discr = GSM48_PDISC_RR; |
| 1751 | ia->msg_type = GSM48_MT_RR_IMM_ASS; |
| 1752 | ia->page_mode = GSM48_PM_SAME; |
| 1753 | gsm48_lchan2chan_desc(&ia->chan_desc, lchan); |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1754 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1755 | /* use request reference extracted from CHAN_RQD */ |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1756 | memcpy(&ia->req_ref, lchan->rqd_ref, sizeof(ia->req_ref)); |
| 1757 | ia->timing_advance = lchan->rqd_ta; |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1758 | if (!lchan->ts->hopping.enabled) { |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1759 | ia->mob_alloc_len = 0; |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1760 | } else { |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1761 | ia->mob_alloc_len = lchan->ts->hopping.ma_len; |
| 1762 | memcpy(ia->mob_alloc, lchan->ts->hopping.ma_data, ia->mob_alloc_len); |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1763 | } |
Harald Welte | a1d39a2 | 2010-06-28 18:41:27 +0200 | [diff] [blame] | 1764 | /* we need to subtract 1 byte from sizeof(*ia) since ia includes the l2_plen field */ |
| 1765 | ia->l2_plen = GSM48_LEN2PLEN((sizeof(*ia)-1) + ia->mob_alloc_len); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1766 | |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1767 | /* Start timer T3101 to wait for GSM48_MT_RR_PAG_RESP */ |
| 1768 | lchan->T3101.cb = t3101_expired; |
| 1769 | lchan->T3101.data = lchan; |
Pablo Neira Ayuso | bf540cb | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1770 | osmo_timer_schedule(&lchan->T3101, bts->network->T3101, 0); |
Holger Freyther | 3186bf2 | 2008-12-29 06:23:49 +0000 | [diff] [blame] | 1771 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1772 | /* send IMMEDIATE ASSIGN CMD on RSL to BTS (to send on CCCH to MS) */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1773 | return rsl_imm_assign_cmd(bts, sizeof(*ia)+ia->mob_alloc_len, (uint8_t *) ia); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1774 | } |
| 1775 | |
Holger Hans Peter Freyther | 54fa2c7 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1776 | /* current load on the CCCH */ |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1777 | static int rsl_rx_ccch_load(struct msgb *msg) |
| 1778 | { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1779 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1780 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Holger Hans Peter Freyther | 54fa2c7 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1781 | struct ccch_signal_data sd; |
| 1782 | |
| 1783 | sd.bts = sign_link->trx->bts; |
| 1784 | sd.rach_slot_count = -1; |
| 1785 | sd.rach_busy_count = -1; |
| 1786 | sd.rach_access_count = -1; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1787 | |
| 1788 | switch (rslh->data[0]) { |
| 1789 | case RSL_IE_PAGING_LOAD: |
Holger Hans Peter Freyther | 54fa2c7 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1790 | sd.pg_buf_space = rslh->data[1] << 8 | rslh->data[2]; |
| 1791 | if (is_ipaccess_bts(sign_link->trx->bts) && sd.pg_buf_space == 0xffff) { |
Harald Welte | 38e9c82 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1792 | /* paging load below configured threshold, use 50 as default */ |
Holger Hans Peter Freyther | 54fa2c7 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1793 | sd.pg_buf_space = 50; |
Harald Welte | 38e9c82 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1794 | } |
Holger Hans Peter Freyther | 54fa2c7 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1795 | paging_update_buffer_space(sign_link->trx->bts, sd.pg_buf_space); |
| 1796 | osmo_signal_dispatch(SS_CCCH, S_CCCH_PAGING_LOAD, &sd); |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1797 | break; |
| 1798 | case RSL_IE_RACH_LOAD: |
Holger Freyther | 8c563cf | 2009-02-03 20:08:51 +0000 | [diff] [blame] | 1799 | if (msg->data_len >= 7) { |
Holger Hans Peter Freyther | 54fa2c7 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1800 | sd.rach_slot_count = rslh->data[2] << 8 | rslh->data[3]; |
| 1801 | sd.rach_busy_count = rslh->data[4] << 8 | rslh->data[5]; |
| 1802 | sd.rach_access_count = rslh->data[6] << 8 | rslh->data[7]; |
| 1803 | osmo_signal_dispatch(SS_CCCH, S_CCCH_RACH_LOAD, &sd); |
Holger Freyther | 8c563cf | 2009-02-03 20:08:51 +0000 | [diff] [blame] | 1804 | } |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1805 | break; |
| 1806 | default: |
| 1807 | break; |
| 1808 | } |
| 1809 | |
| 1810 | return 0; |
| 1811 | } |
| 1812 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1813 | static int abis_rsl_rx_cchan(struct msgb *msg) |
| 1814 | { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1815 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1816 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1817 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1818 | |
Neels Hofmeyr | 2867f88 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 1819 | msg->lchan = lchan_lookup(sign_link->trx, rslh->chan_nr, |
| 1820 | "Abis RSL rx CCHAN: "); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1821 | |
| 1822 | switch (rslh->c.msg_type) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1823 | case RSL_MT_CHAN_RQD: |
| 1824 | /* MS has requested a channel on the RACH */ |
| 1825 | rc = rsl_rx_chan_rqd(msg); |
| 1826 | break; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1827 | case RSL_MT_CCCH_LOAD_IND: |
| 1828 | /* current load on the CCCH */ |
| 1829 | rc = rsl_rx_ccch_load(msg); |
| 1830 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1831 | case RSL_MT_DELETE_IND: |
| 1832 | /* CCCH overloaded, IMM_ASSIGN was dropped */ |
| 1833 | case RSL_MT_CBCH_LOAD_IND: |
| 1834 | /* current load on the CBCH */ |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1835 | LOGP(DRSL, LOGL_NOTICE, "Unimplemented Abis RSL TRX message " |
| 1836 | "type 0x%02x\n", rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1837 | break; |
| 1838 | default: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1839 | LOGP(DRSL, LOGL_NOTICE, "Unknown Abis RSL TRX message type " |
| 1840 | "0x%02x\n", rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1841 | return -EINVAL; |
| 1842 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1843 | |
| 1844 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1845 | } |
| 1846 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1847 | static int rsl_rx_rll_err_ind(struct msgb *msg) |
| 1848 | { |
Holger Hans Peter Freyther | 164ee30 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1849 | struct tlv_parsed tp; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1850 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Holger Hans Peter Freyther | 164ee30 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1851 | uint8_t rlm_cause; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1852 | |
Holger Hans Peter Freyther | 164ee30 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1853 | rsl_tlv_parse(&tp, rllh->data, msgb_l2len(msg) - sizeof(*rllh)); |
| 1854 | if (!TLVP_PRESENT(&tp, RSL_IE_RLM_CAUSE)) { |
| 1855 | LOGP(DRLL, LOGL_ERROR, |
| 1856 | "%s ERROR INDICATION without mandantory cause.\n", |
| 1857 | gsm_lchan_name(msg->lchan)); |
| 1858 | return -1; |
| 1859 | } |
| 1860 | |
| 1861 | rlm_cause = *TLVP_VAL(&tp, RSL_IE_RLM_CAUSE); |
Holger Hans Peter Freyther | 1e93b79 | 2014-04-19 16:45:36 +0200 | [diff] [blame] | 1862 | LOGP(DRLL, LOGL_ERROR, "%s ERROR INDICATION cause=%s in state=%s\n", |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1863 | gsm_lchan_name(msg->lchan), |
Holger Hans Peter Freyther | 1e93b79 | 2014-04-19 16:45:36 +0200 | [diff] [blame] | 1864 | rsl_rlm_cause_name(rlm_cause), |
| 1865 | gsm_lchans_name(msg->lchan->state)); |
| 1866 | |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1867 | rll_indication(msg->lchan, rllh->link_id, BSC_RLLR_IND_ERR_IND); |
Harald Welte (local) | 9538efc | 2009-12-26 23:55:00 +0100 | [diff] [blame] | 1868 | |
Holger Hans Peter Freyther | 164ee30 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1869 | if (rlm_cause == RLL_CAUSE_T200_EXPIRED) { |
Alexander Couzens | b847a21 | 2016-08-02 11:34:11 +0200 | [diff] [blame] | 1870 | rate_ctr_inc(&msg->lchan->ts->trx->bts->network->bsc_ctrs->ctr[BSC_CTR_CHAN_RLL_ERR]); |
Holger Hans Peter Freyther | 0e4e73a | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 1871 | return rsl_rf_chan_release_err(msg->lchan); |
Holger Hans Peter Freyther | 3ba36d5 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1872 | } |
Harald Welte | 81543bc | 2009-07-04 09:40:05 +0200 | [diff] [blame] | 1873 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1874 | return 0; |
| 1875 | } |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1876 | |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1877 | static void rsl_handle_release(struct gsm_lchan *lchan) |
| 1878 | { |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1879 | int sapi; |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1880 | struct gsm_bts *bts; |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1881 | |
Holger Hans Peter Freyther | 9d50a27 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 1882 | /* |
| 1883 | * Maybe only one link/SAPI was releasd or the error handling |
| 1884 | * was activated. Just return now and let the other code handle |
| 1885 | * it. |
| 1886 | */ |
Holger Hans Peter Freyther | d7fd306 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1887 | if (lchan->state != LCHAN_S_REL_REQ) |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1888 | return; |
| 1889 | |
| 1890 | for (sapi = 0; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 1891 | if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) |
| 1892 | continue; |
Harald Welte | 3a3c277 | 2010-12-24 12:51:07 +0100 | [diff] [blame] | 1893 | LOGP(DRSL, LOGL_DEBUG, "%s waiting for SAPI=%d to be released.\n", |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1894 | gsm_lchan_name(lchan), sapi); |
| 1895 | return; |
| 1896 | } |
| 1897 | |
Holger Hans Peter Freyther | d7fd306 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1898 | |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1899 | /* Stop T3109 and wait for T3111 before re-using the channel */ |
| 1900 | osmo_timer_del(&lchan->T3109); |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1901 | lchan->T3111.cb = t3111_expired; |
| 1902 | lchan->T3111.data = lchan; |
| 1903 | bts = lchan->ts->trx->bts; |
Pablo Neira Ayuso | bf540cb | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1904 | osmo_timer_schedule(&lchan->T3111, bts->network->T3111, 0); |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1905 | } |
| 1906 | |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1907 | /* ESTABLISH INDICATION, LOCATION AREA UPDATE REQUEST |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1908 | 0x02, 0x06, |
| 1909 | 0x01, 0x20, |
| 1910 | 0x02, 0x00, |
| 1911 | 0x0b, 0x00, 0x0f, 0x05, 0x08, ... */ |
| 1912 | |
| 1913 | static int abis_rsl_rx_rll(struct msgb *msg) |
| 1914 | { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1915 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1916 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1917 | int rc = 0; |
| 1918 | char *ts_name; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1919 | uint8_t sapi = rllh->link_id & 7; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1920 | |
Neels Hofmeyr | 2867f88 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 1921 | msg->lchan = lchan_lookup(sign_link->trx, rllh->chan_nr, |
| 1922 | "Abis RSL rx RLL: "); |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1923 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1924 | DEBUGP(DRLL, "%s SAPI=%u ", ts_name, sapi); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1925 | |
| 1926 | switch (rllh->c.msg_type) { |
| 1927 | case RSL_MT_DATA_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1928 | DEBUGPC(DRLL, "DATA INDICATION\n"); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1929 | if (msgb_l2len(msg) > |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1930 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1931 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1932 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | daef606 | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1933 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1934 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1935 | break; |
| 1936 | case RSL_MT_EST_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1937 | DEBUGPC(DRLL, "ESTABLISH INDICATION\n"); |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1938 | /* lchan is established, stop T3101 */ |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1939 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_MS; |
Pablo Neira Ayuso | bf540cb | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1940 | osmo_timer_del(&msg->lchan->T3101); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1941 | if (msgb_l2len(msg) > |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1942 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1943 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1944 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | daef606 | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1945 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1946 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1947 | break; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1948 | case RSL_MT_EST_CONF: |
Harald Welte | 1c40927 | 2009-08-09 14:13:58 +0200 | [diff] [blame] | 1949 | DEBUGPC(DRLL, "ESTABLISH CONFIRM\n"); |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1950 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_NET; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1951 | rll_indication(msg->lchan, rllh->link_id, |
| 1952 | BSC_RLLR_IND_EST_CONF); |
| 1953 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1954 | case RSL_MT_REL_IND: |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1955 | /* BTS informs us of having received DISC from MS */ |
Harald Welte | 602f2b8 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1956 | DEBUGPC(DRLL, "RELEASE INDICATION\n"); |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1957 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1958 | rll_indication(msg->lchan, rllh->link_id, |
| 1959 | BSC_RLLR_IND_REL_IND); |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1960 | rsl_handle_release(msg->lchan); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1961 | break; |
| 1962 | case RSL_MT_REL_CONF: |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1963 | /* BTS informs us of having received UA from MS, |
| 1964 | * in response to DISC that we've sent earlier */ |
Harald Welte | 602f2b8 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1965 | DEBUGPC(DRLL, "RELEASE CONFIRMATION\n"); |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1966 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1967 | rsl_handle_release(msg->lchan); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1968 | break; |
| 1969 | case RSL_MT_ERROR_IND: |
Neels Hofmeyr | e3dc498 | 2016-07-26 19:39:43 +0200 | [diff] [blame] | 1970 | DEBUGPC(DRLL, "ERROR INDICATION\n"); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1971 | rc = rsl_rx_rll_err_ind(msg); |
| 1972 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1973 | case RSL_MT_UNIT_DATA_IND: |
Neels Hofmeyr | e3dc498 | 2016-07-26 19:39:43 +0200 | [diff] [blame] | 1974 | DEBUGPC(DRLL, "UNIT DATA INDICATION\n"); |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1975 | LOGP(DRLL, LOGL_NOTICE, "unimplemented Abis RLL message " |
| 1976 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1977 | break; |
| 1978 | default: |
Neels Hofmeyr | e3dc498 | 2016-07-26 19:39:43 +0200 | [diff] [blame] | 1979 | DEBUGPC(DRLL, "UNKNOWN\n"); |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1980 | LOGP(DRLL, LOGL_NOTICE, "unknown Abis RLL message " |
| 1981 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1982 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1983 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1984 | } |
| 1985 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1986 | static uint8_t ipa_smod_s_for_lchan(struct gsm_lchan *lchan) |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1987 | { |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1988 | switch (lchan->tch_mode) { |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1989 | case GSM48_CMODE_SPEECH_V1: |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1990 | switch (lchan->type) { |
| 1991 | case GSM_LCHAN_TCH_F: |
| 1992 | return 0x00; |
| 1993 | case GSM_LCHAN_TCH_H: |
| 1994 | return 0x03; |
| 1995 | default: |
| 1996 | break; |
| 1997 | } |
Holger Hans Peter Freyther | 4766524 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 1998 | break; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1999 | case GSM48_CMODE_SPEECH_EFR: |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2000 | switch (lchan->type) { |
| 2001 | case GSM_LCHAN_TCH_F: |
| 2002 | return 0x01; |
| 2003 | /* there's no half-rate EFR */ |
| 2004 | default: |
| 2005 | break; |
| 2006 | } |
Holger Hans Peter Freyther | 4766524 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2007 | break; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2008 | case GSM48_CMODE_SPEECH_AMR: |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2009 | switch (lchan->type) { |
| 2010 | case GSM_LCHAN_TCH_F: |
| 2011 | return 0x02; |
| 2012 | case GSM_LCHAN_TCH_H: |
| 2013 | return 0x05; |
| 2014 | default: |
| 2015 | break; |
| 2016 | } |
Holger Hans Peter Freyther | 4766524 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2017 | break; |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2018 | default: |
| 2019 | break; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2020 | } |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2021 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access speech mode for " |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2022 | "tch_mode == 0x%02x\n", lchan->tch_mode); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2023 | return 0; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2024 | } |
| 2025 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2026 | static uint8_t ipa_rtp_pt_for_lchan(struct gsm_lchan *lchan) |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2027 | { |
| 2028 | switch (lchan->tch_mode) { |
| 2029 | case GSM48_CMODE_SPEECH_V1: |
| 2030 | switch (lchan->type) { |
| 2031 | case GSM_LCHAN_TCH_F: |
| 2032 | return RTP_PT_GSM_FULL; |
| 2033 | case GSM_LCHAN_TCH_H: |
| 2034 | return RTP_PT_GSM_HALF; |
| 2035 | default: |
| 2036 | break; |
| 2037 | } |
Holger Hans Peter Freyther | 4766524 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2038 | break; |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2039 | case GSM48_CMODE_SPEECH_EFR: |
| 2040 | switch (lchan->type) { |
| 2041 | case GSM_LCHAN_TCH_F: |
| 2042 | return RTP_PT_GSM_EFR; |
| 2043 | /* there's no half-rate EFR */ |
| 2044 | default: |
| 2045 | break; |
| 2046 | } |
Holger Hans Peter Freyther | 4766524 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2047 | break; |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2048 | case GSM48_CMODE_SPEECH_AMR: |
| 2049 | switch (lchan->type) { |
| 2050 | case GSM_LCHAN_TCH_F: |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2051 | case GSM_LCHAN_TCH_H: |
Holger Hans Peter Freyther | ed999b2 | 2011-07-21 10:24:46 +0200 | [diff] [blame] | 2052 | return RTP_PT_AMR; |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2053 | default: |
| 2054 | break; |
| 2055 | } |
Holger Hans Peter Freyther | 4766524 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2056 | break; |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2057 | default: |
| 2058 | break; |
| 2059 | } |
| 2060 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access rtp payload type for " |
| 2061 | "tch_mode == 0x%02x\n & lchan_type == %d", |
| 2062 | lchan->tch_mode, lchan->type); |
| 2063 | return 0; |
| 2064 | } |
| 2065 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2066 | /* ip.access specific RSL extensions */ |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2067 | static void ipac_parse_rtp(struct gsm_lchan *lchan, struct tlv_parsed *tv) |
| 2068 | { |
| 2069 | struct in_addr ip; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2070 | uint16_t port, conn_id; |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2071 | |
| 2072 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_IP)) { |
Daniel Willmann | 8a485f0 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2073 | ip.s_addr = tlvp_val32_unal(tv, RSL_IE_IPAC_LOCAL_IP); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2074 | DEBUGPC(DRSL, "LOCAL_IP=%s ", inet_ntoa(ip)); |
| 2075 | lchan->abis_ip.bound_ip = ntohl(ip.s_addr); |
| 2076 | } |
| 2077 | |
| 2078 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_PORT)) { |
Daniel Willmann | 8a485f0 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2079 | port = tlvp_val16_unal(tv, RSL_IE_IPAC_LOCAL_PORT); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2080 | port = ntohs(port); |
| 2081 | DEBUGPC(DRSL, "LOCAL_PORT=%u ", port); |
| 2082 | lchan->abis_ip.bound_port = port; |
| 2083 | } |
| 2084 | |
| 2085 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_CONN_ID)) { |
Daniel Willmann | 8a485f0 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2086 | conn_id = tlvp_val16_unal(tv, RSL_IE_IPAC_CONN_ID); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2087 | conn_id = ntohs(conn_id); |
| 2088 | DEBUGPC(DRSL, "CON_ID=%u ", conn_id); |
| 2089 | lchan->abis_ip.conn_id = conn_id; |
| 2090 | } |
| 2091 | |
| 2092 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_RTP_PAYLOAD2)) { |
| 2093 | lchan->abis_ip.rtp_payload2 = |
| 2094 | *TLVP_VAL(tv, RSL_IE_IPAC_RTP_PAYLOAD2); |
| 2095 | DEBUGPC(DRSL, "RTP_PAYLOAD2=0x%02x ", |
| 2096 | lchan->abis_ip.rtp_payload2); |
| 2097 | } |
| 2098 | |
| 2099 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_SPEECH_MODE)) { |
| 2100 | lchan->abis_ip.speech_mode = |
| 2101 | *TLVP_VAL(tv, RSL_IE_IPAC_SPEECH_MODE); |
| 2102 | DEBUGPC(DRSL, "speech_mode=0x%02x ", |
| 2103 | lchan->abis_ip.speech_mode); |
| 2104 | } |
| 2105 | |
| 2106 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_IP)) { |
Daniel Willmann | 8a485f0 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2107 | ip.s_addr = tlvp_val32_unal(tv, RSL_IE_IPAC_REMOTE_IP); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2108 | DEBUGPC(DRSL, "REMOTE_IP=%s ", inet_ntoa(ip)); |
| 2109 | lchan->abis_ip.connect_ip = ntohl(ip.s_addr); |
| 2110 | } |
| 2111 | |
| 2112 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_PORT)) { |
Daniel Willmann | 8a485f0 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2113 | port = tlvp_val16_unal(tv, RSL_IE_IPAC_REMOTE_PORT); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2114 | port = ntohs(port); |
| 2115 | DEBUGPC(DRSL, "REMOTE_PORT=%u ", port); |
| 2116 | lchan->abis_ip.connect_port = port; |
| 2117 | } |
| 2118 | } |
| 2119 | |
Harald Welte | 647db84 | 2013-02-03 12:06:58 +0100 | [diff] [blame] | 2120 | /*! \brief Issue IPA RSL CRCX to configure RTP on BTS side |
| 2121 | * \param[in] lchan Logical Channel for which we issue CRCX |
| 2122 | */ |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2123 | int rsl_ipacc_crcx(struct gsm_lchan *lchan) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2124 | { |
| 2125 | struct msgb *msg = rsl_msgb_alloc(); |
| 2126 | struct abis_rsl_dchan_hdr *dh; |
| 2127 | |
| 2128 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2129 | init_dchan_hdr(dh, RSL_MT_IPAC_CRCX); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2130 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 2131 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2132 | |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2133 | /* 0x1- == receive-only, 0x-1 == EFR codec */ |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2134 | lchan->abis_ip.speech_mode = 0x10 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2135 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2136 | msgb_tv_put(msg, RSL_IE_IPAC_SPEECH_MODE, lchan->abis_ip.speech_mode); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2137 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD, lchan->abis_ip.rtp_payload); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2138 | |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2139 | DEBUGP(DRSL, "%s IPAC_BIND speech_mode=0x%02x RTP_PAYLOAD=%d\n", |
| 2140 | gsm_lchan_name(lchan), lchan->abis_ip.speech_mode, |
| 2141 | lchan->abis_ip.rtp_payload); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2142 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2143 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2144 | |
| 2145 | return abis_rsl_sendmsg(msg); |
| 2146 | } |
| 2147 | |
Harald Welte | 647db84 | 2013-02-03 12:06:58 +0100 | [diff] [blame] | 2148 | /*! \brief Issue IPA RSL MDCX to configure MGW-side of RTP |
| 2149 | * \param[in] lchan Logical Channel for which we issue MDCX |
| 2150 | * \param[in] ip Remote (MGW) IP address for RTP |
| 2151 | * \param[in] port Remote (MGW) UDP port number for RTP |
| 2152 | * \param[in] rtp_payload2 Contents of RTP PAYLOAD 2 IE |
| 2153 | */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2154 | int rsl_ipacc_mdcx(struct gsm_lchan *lchan, uint32_t ip, uint16_t port, |
| 2155 | uint8_t rtp_payload2) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2156 | { |
| 2157 | struct msgb *msg = rsl_msgb_alloc(); |
| 2158 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2159 | uint32_t *att_ip; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2160 | struct in_addr ia; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2161 | |
| 2162 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2163 | init_dchan_hdr(dh, RSL_MT_IPAC_MDCX); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2164 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 2165 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2166 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2167 | /* we need to store these now as MDCX_ACK does not return them :( */ |
| 2168 | lchan->abis_ip.rtp_payload2 = rtp_payload2; |
| 2169 | lchan->abis_ip.connect_port = port; |
| 2170 | lchan->abis_ip.connect_ip = ip; |
| 2171 | |
Harald Welte | 58ca5b7 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 2172 | /* 0x0- == both directions, 0x-1 == EFR codec */ |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2173 | lchan->abis_ip.speech_mode = 0x00 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2174 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | 58ca5b7 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 2175 | |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2176 | ia.s_addr = htonl(ip); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2177 | DEBUGP(DRSL, "%s IPAC_MDCX IP=%s PORT=%d RTP_PAYLOAD=%d RTP_PAYLOAD2=%d " |
| 2178 | "CONN_ID=%d speech_mode=0x%02x\n", gsm_lchan_name(lchan), |
| 2179 | inet_ntoa(ia), port, lchan->abis_ip.rtp_payload, rtp_payload2, |
| 2180 | lchan->abis_ip.conn_id, lchan->abis_ip.speech_mode); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2181 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2182 | msgb_tv16_put(msg, RSL_IE_IPAC_CONN_ID, lchan->abis_ip.conn_id); |
| 2183 | msgb_v_put(msg, RSL_IE_IPAC_REMOTE_IP); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2184 | att_ip = (uint32_t *) msgb_put(msg, sizeof(ip)); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2185 | *att_ip = ia.s_addr; |
| 2186 | msgb_tv16_put(msg, RSL_IE_IPAC_REMOTE_PORT, port); |
| 2187 | msgb_tv_put(msg, RSL_IE_IPAC_SPEECH_MODE, lchan->abis_ip.speech_mode); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2188 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD, lchan->abis_ip.rtp_payload); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2189 | if (rtp_payload2) |
| 2190 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD2, rtp_payload2); |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2191 | |
| 2192 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2193 | |
| 2194 | return abis_rsl_sendmsg(msg); |
| 2195 | } |
| 2196 | |
Harald Welte | a72273e | 2009-12-20 16:51:09 +0100 | [diff] [blame] | 2197 | /* tell BTS to connect RTP stream to our local RTP socket */ |
| 2198 | int rsl_ipacc_mdcx_to_rtpsock(struct gsm_lchan *lchan) |
| 2199 | { |
| 2200 | struct rtp_socket *rs = lchan->abis_ip.rtp_socket; |
| 2201 | int rc; |
| 2202 | |
| 2203 | rc = rsl_ipacc_mdcx(lchan, ntohl(rs->rtp.sin_local.sin_addr.s_addr), |
| 2204 | ntohs(rs->rtp.sin_local.sin_port), |
| 2205 | /* FIXME: use RTP payload of bound socket, not BTS*/ |
| 2206 | lchan->abis_ip.rtp_payload2); |
| 2207 | |
| 2208 | return rc; |
| 2209 | } |
| 2210 | |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 2211 | int rsl_ipacc_pdch_activate(struct gsm_bts_trx_ts *ts, int act) |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2212 | { |
| 2213 | struct msgb *msg = rsl_msgb_alloc(); |
| 2214 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2215 | uint8_t msg_type; |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2216 | |
Neels Hofmeyr | 3201988 | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 2217 | if (ts->flags & TS_F_PDCH_PENDING_MASK) { |
| 2218 | LOGP(DRSL, LOGL_ERROR, |
| 2219 | "%s PDCH %s requested, but a PDCH%s%s is still pending\n", |
| 2220 | gsm_ts_name(ts), |
| 2221 | act ? "ACT" : "DEACT", |
| 2222 | ts->flags & TS_F_PDCH_ACT_PENDING? " ACT" : "", |
| 2223 | ts->flags & TS_F_PDCH_DEACT_PENDING? " DEACT" : ""); |
| 2224 | return -EINVAL; |
| 2225 | } |
| 2226 | |
| 2227 | if (act){ |
Neels Hofmeyr | 9ddd8e6 | 2016-07-06 14:39:04 +0200 | [diff] [blame] | 2228 | /* Callers should heed the GPRS mode. */ |
| 2229 | OSMO_ASSERT(ts->trx->bts->gprs.mode != BTS_GPRS_NONE); |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2230 | msg_type = RSL_MT_IPAC_PDCH_ACT; |
Neels Hofmeyr | 3201988 | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 2231 | ts->flags |= TS_F_PDCH_ACT_PENDING; |
| 2232 | } else { |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2233 | msg_type = RSL_MT_IPAC_PDCH_DEACT; |
Neels Hofmeyr | 3201988 | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 2234 | ts->flags |= TS_F_PDCH_DEACT_PENDING; |
| 2235 | } |
| 2236 | /* TODO add timeout to cancel PDCH DE/ACT */ |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2237 | |
| 2238 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2239 | init_dchan_hdr(dh, msg_type); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2240 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Neels Hofmeyr | d384110 | 2016-07-18 23:43:44 +0200 | [diff] [blame] | 2241 | dh->chan_nr = gsm_pchan2chan_nr(GSM_PCHAN_PDCH, ts->nr, 0); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2242 | |
Neels Hofmeyr | 9f5d231 | 2016-05-31 17:51:41 +0200 | [diff] [blame] | 2243 | DEBUGP(DRSL, "%s IPAC PDCH %sACT\n", gsm_ts_name(ts), |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2244 | act ? "" : "DE"); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2245 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2246 | msg->dst = ts->trx->rsl_link; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2247 | |
| 2248 | return abis_rsl_sendmsg(msg); |
| 2249 | } |
| 2250 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2251 | static int abis_rsl_rx_ipacc_crcx_ack(struct msgb *msg) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2252 | { |
| 2253 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 2254 | struct tlv_parsed tv; |
Harald Welte | 2c82899 | 2009-12-02 01:56:49 +0530 | [diff] [blame] | 2255 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2256 | |
| 2257 | /* the BTS has acknowledged a local bind, it now tells us the IP |
| 2258 | * address and port number to which it has bound the given logical |
| 2259 | * channel */ |
| 2260 | |
| 2261 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 2262 | if (!TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_PORT) || |
| 2263 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_IP) || |
Harald Welte | 86c162d | 2009-07-12 09:45:05 +0200 | [diff] [blame] | 2264 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_CONN_ID)) { |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2265 | LOGP(DRSL, LOGL_NOTICE, "mandatory IE missing"); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2266 | return -EINVAL; |
| 2267 | } |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 2268 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2269 | ipac_parse_rtp(lchan, &tv); |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 2270 | |
Pablo Neira Ayuso | bbc5b99 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 2271 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_CRCX_ACK, msg->lchan); |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 2272 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2273 | return 0; |
| 2274 | } |
| 2275 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2276 | static int abis_rsl_rx_ipacc_mdcx_ack(struct msgb *msg) |
| 2277 | { |
| 2278 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 2279 | struct tlv_parsed tv; |
| 2280 | struct gsm_lchan *lchan = msg->lchan; |
| 2281 | |
| 2282 | /* the BTS has acknowledged a remote connect request and |
| 2283 | * it now tells us the IP address and port number to which it has |
| 2284 | * connected the given logical channel */ |
| 2285 | |
| 2286 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 2287 | ipac_parse_rtp(lchan, &tv); |
Pablo Neira Ayuso | bbc5b99 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 2288 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_MDCX_ACK, msg->lchan); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2289 | |
| 2290 | return 0; |
| 2291 | } |
| 2292 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2293 | static int abis_rsl_rx_ipacc_dlcx_ind(struct msgb *msg) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2294 | { |
| 2295 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 2296 | struct tlv_parsed tv; |
| 2297 | |
| 2298 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2299 | |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 2300 | if (TLVP_PRESENT(&tv, RSL_IE_CAUSE)) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2301 | print_rsl_cause(LOGL_DEBUG, TLVP_VAL(&tv, RSL_IE_CAUSE), |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 2302 | TLVP_LEN(&tv, RSL_IE_CAUSE)); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2303 | |
Pablo Neira Ayuso | bbc5b99 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 2304 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_DLCX_IND, msg->lchan); |
Harald Welte | 888b114 | 2009-07-28 18:02:05 +0200 | [diff] [blame] | 2305 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2306 | return 0; |
| 2307 | } |
| 2308 | |
| 2309 | static int abis_rsl_rx_ipacc(struct msgb *msg) |
| 2310 | { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2311 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2312 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2313 | char *ts_name; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2314 | int rc = 0; |
| 2315 | |
Neels Hofmeyr | 2867f88 | 2016-08-23 01:22:58 +0200 | [diff] [blame] | 2316 | msg->lchan = lchan_lookup(sign_link->trx, rllh->chan_nr, |
| 2317 | "Abis RSL rx IPACC: "); |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 2318 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2319 | |
| 2320 | switch (rllh->c.msg_type) { |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2321 | case RSL_MT_IPAC_CRCX_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2322 | DEBUGP(DRSL, "%s IPAC_CRCX_ACK ", ts_name); |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2323 | rc = abis_rsl_rx_ipacc_crcx_ack(msg); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2324 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2325 | case RSL_MT_IPAC_CRCX_NACK: |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2326 | /* somehow the BTS was unable to bind the lchan to its local |
| 2327 | * port?!? */ |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2328 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_CRCX_NACK\n", ts_name); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2329 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2330 | case RSL_MT_IPAC_MDCX_ACK: |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2331 | /* the BTS tells us that a connect operation was successful */ |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2332 | DEBUGP(DRSL, "%s IPAC_MDCX_ACK ", ts_name); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2333 | rc = abis_rsl_rx_ipacc_mdcx_ack(msg); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2334 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2335 | case RSL_MT_IPAC_MDCX_NACK: |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2336 | /* somehow the BTS was unable to connect the lchan to a remote |
| 2337 | * port */ |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2338 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_MDCX_NACK\n", ts_name); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2339 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2340 | case RSL_MT_IPAC_DLCX_IND: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2341 | DEBUGP(DRSL, "%s IPAC_DLCX_IND ", ts_name); |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2342 | rc = abis_rsl_rx_ipacc_dlcx_ind(msg); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2343 | break; |
| 2344 | default: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2345 | LOGP(DRSL, LOGL_NOTICE, "Unknown ip.access msg_type 0x%02x\n", |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2346 | rllh->c.msg_type); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2347 | break; |
| 2348 | } |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 2349 | DEBUGPC(DRSL, "\n"); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2350 | |
| 2351 | return rc; |
| 2352 | } |
| 2353 | |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2354 | int dyn_ts_switchover_start(struct gsm_bts_trx_ts *ts, |
Neels Hofmeyr | d3b7fa8 | 2016-07-23 20:08:41 +0200 | [diff] [blame] | 2355 | enum gsm_phys_chan_config to_pchan) |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2356 | { |
| 2357 | int ss; |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2358 | int rc = -EIO; |
| 2359 | |
| 2360 | OSMO_ASSERT(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH); |
| 2361 | DEBUGP(DRSL, "%s starting switchover to %s\n", |
| 2362 | gsm_ts_and_pchan_name(ts), gsm_pchan_name(to_pchan)); |
| 2363 | |
| 2364 | if (ts->dyn.pchan_is != ts->dyn.pchan_want) { |
| 2365 | LOGP(DRSL, LOGL_ERROR, |
| 2366 | "%s: Attempt to switch dynamic channel to %s," |
| 2367 | " but is already in switchover.\n", |
| 2368 | gsm_ts_and_pchan_name(ts), |
| 2369 | gsm_pchan_name(to_pchan)); |
| 2370 | return ts->dyn.pchan_want == to_pchan? 0 : -EAGAIN; |
| 2371 | } |
| 2372 | |
| 2373 | if (ts->dyn.pchan_is == to_pchan) { |
| 2374 | LOGP(DRSL, LOGL_INFO, |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2375 | "%s %s Already is in %s mode, cannot switchover.\n", |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2376 | gsm_ts_name(ts), gsm_pchan_name(ts->pchan), |
| 2377 | gsm_pchan_name(to_pchan)); |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2378 | return -EINVAL; |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2379 | } |
| 2380 | |
| 2381 | /* Paranoia: let's make sure all is indeed released. */ |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2382 | for (ss = 0; ss < ts_subslots(ts); ss++) { |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2383 | struct gsm_lchan *lc = &ts->lchan[ss]; |
| 2384 | if (lc->state != LCHAN_S_NONE) { |
| 2385 | LOGP(DRSL, LOGL_ERROR, |
| 2386 | "%s Attempt to switch dynamic channel to %s," |
| 2387 | " but is not fully released.\n", |
| 2388 | gsm_ts_and_pchan_name(ts), |
| 2389 | gsm_pchan_name(to_pchan)); |
| 2390 | return -EAGAIN; |
| 2391 | } |
| 2392 | } |
| 2393 | |
| 2394 | /* Record that we're busy switching. */ |
| 2395 | ts->dyn.pchan_want = to_pchan; |
| 2396 | |
| 2397 | /* |
| 2398 | * To switch from PDCH, we need to initiate the release from the BSC |
| 2399 | * side. dyn_ts_switchover_continue() will be called from |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2400 | * rsl_rx_rf_chan_rel_ack(). PDCH is always on lchan[0]. |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2401 | */ |
| 2402 | if (ts->dyn.pchan_is == GSM_PCHAN_PDCH) { |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2403 | rsl_lchan_set_state(ts->lchan, LCHAN_S_REL_REQ); |
| 2404 | rc = rsl_rf_chan_release(ts->lchan, 0, SACCH_NONE); |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2405 | if (rc) { |
| 2406 | LOGP(DRSL, LOGL_ERROR, |
| 2407 | "%s RSL RF Chan Release failed\n", |
| 2408 | gsm_ts_and_pchan_name(ts)); |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2409 | return dyn_ts_switchover_failed(ts, rc); |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2410 | } |
| 2411 | return 0; |
| 2412 | } |
| 2413 | |
| 2414 | /* |
| 2415 | * To switch from TCH/F and TCH/H pchans, this has been called from |
| 2416 | * rsl_rx_rf_chan_rel_ack(), i.e. release is complete. Go ahead and |
| 2417 | * activate as new type. This will always be PDCH. |
| 2418 | */ |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2419 | return dyn_ts_switchover_continue(ts); |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2420 | } |
| 2421 | |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2422 | static int dyn_ts_switchover_continue(struct gsm_bts_trx_ts *ts) |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2423 | { |
| 2424 | int rc; |
| 2425 | uint8_t act_type; |
| 2426 | uint8_t ho_ref; |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2427 | int ss; |
| 2428 | struct gsm_lchan *lchan; |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2429 | |
| 2430 | OSMO_ASSERT(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH); |
| 2431 | DEBUGP(DRSL, "%s switchover: release complete," |
| 2432 | " activating new pchan type\n", |
| 2433 | gsm_ts_and_pchan_name(ts)); |
| 2434 | |
| 2435 | if (ts->dyn.pchan_is == ts->dyn.pchan_want) { |
| 2436 | LOGP(DRSL, LOGL_ERROR, |
| 2437 | "%s Requested to switchover dynamic channel to the" |
| 2438 | " same type it is already in.\n", |
| 2439 | gsm_ts_and_pchan_name(ts)); |
| 2440 | return 0; |
| 2441 | } |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2442 | |
| 2443 | for (ss = 0; ss < ts_subslots(ts); ss++) { |
| 2444 | lchan = &ts->lchan[ss]; |
| 2445 | if (lchan->rqd_ref) { |
| 2446 | LOGP(DRSL, LOGL_ERROR, |
| 2447 | "%s During dyn TS switchover, expecting no" |
| 2448 | " Request Reference to be pending. Discarding!\n", |
| 2449 | gsm_lchan_name(lchan)); |
| 2450 | talloc_free(lchan->rqd_ref); |
| 2451 | lchan->rqd_ref = NULL; |
| 2452 | } |
| 2453 | } |
| 2454 | |
| 2455 | /* |
| 2456 | * When switching pchan modes, all lchans are unused. So always |
| 2457 | * activate whatever wants to be activated on the first lchan. (We |
| 2458 | * wouldn't remember to use lchan[1] across e.g. a PDCH deact anyway) |
| 2459 | */ |
| 2460 | lchan = ts->lchan; |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2461 | |
| 2462 | /* |
| 2463 | * For TCH/x, the lchan->type has been set in lchan_alloc(), but it may |
| 2464 | * have been lost during channel release due to dynamic switchover. |
| 2465 | * |
| 2466 | * For PDCH, the lchan->type will actually remain NONE. |
| 2467 | * TODO: set GSM_LCHAN_PDTCH? |
| 2468 | */ |
| 2469 | switch (ts->dyn.pchan_want) { |
| 2470 | case GSM_PCHAN_TCH_F: |
| 2471 | lchan->type = GSM_LCHAN_TCH_F; |
| 2472 | break; |
| 2473 | case GSM_PCHAN_TCH_H: |
| 2474 | lchan->type = GSM_LCHAN_TCH_H; |
| 2475 | break; |
| 2476 | case GSM_PCHAN_PDCH: |
| 2477 | lchan->type = GSM_LCHAN_NONE; |
| 2478 | break; |
| 2479 | default: |
| 2480 | LOGP(DRSL, LOGL_ERROR, |
| 2481 | "%s Invalid target pchan for dynamic TS\n", |
| 2482 | gsm_ts_and_pchan_name(ts)); |
| 2483 | } |
| 2484 | |
| 2485 | act_type = (ts->dyn.pchan_want == GSM_PCHAN_PDCH) |
| 2486 | ? RSL_ACT_OSMO_PDCH |
| 2487 | : lchan->dyn.act_type; |
| 2488 | ho_ref = (ts->dyn.pchan_want == GSM_PCHAN_PDCH) |
| 2489 | ? 0 |
| 2490 | : lchan->dyn.ho_ref; |
| 2491 | |
| 2492 | /* Fetch the rqd_ref back from before switchover started. */ |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2493 | lchan->rqd_ref = lchan->dyn.rqd_ref; |
| 2494 | lchan->rqd_ta = lchan->dyn.rqd_ta; |
| 2495 | lchan->dyn.rqd_ref = NULL; |
| 2496 | lchan->dyn.rqd_ta = 0; |
| 2497 | |
Neels Hofmeyr | a2ef7d6 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2498 | /* During switchover, we have received a release ack, which means that |
| 2499 | * the act_timer has been stopped. Start the timer again so we mark |
| 2500 | * this channel broken if the activation ack comes too late. */ |
| 2501 | lchan->act_timer.cb = lchan_act_tmr_cb; |
| 2502 | lchan->act_timer.data = lchan; |
| 2503 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 2504 | |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2505 | rc = rsl_chan_activate_lchan(lchan, act_type, ho_ref); |
| 2506 | if (rc) { |
| 2507 | LOGP(DRSL, LOGL_ERROR, |
| 2508 | "%s RSL Chan Activate failed\n", |
| 2509 | gsm_ts_and_pchan_name(ts)); |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2510 | return dyn_ts_switchover_failed(ts, rc); |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2511 | } |
| 2512 | return 0; |
| 2513 | } |
| 2514 | |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2515 | static int dyn_ts_switchover_failed(struct gsm_bts_trx_ts *ts, int rc) |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2516 | { |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2517 | ts->dyn.pchan_want = ts->dyn.pchan_is; |
| 2518 | LOGP(DRSL, LOGL_ERROR, "%s Error %d during dynamic channel switchover." |
| 2519 | " Going back to previous pchan.\n", gsm_ts_and_pchan_name(ts), |
| 2520 | rc); |
| 2521 | return rc; |
| 2522 | } |
| 2523 | |
| 2524 | static void dyn_ts_switchover_complete(struct gsm_lchan *lchan) |
| 2525 | { |
| 2526 | enum gsm_phys_chan_config pchan_act; |
| 2527 | enum gsm_phys_chan_config pchan_was; |
| 2528 | struct gsm_bts_trx_ts *ts = lchan->ts; |
| 2529 | |
| 2530 | OSMO_ASSERT(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH); |
| 2531 | |
| 2532 | pchan_act = pchan_for_lchant(lchan->type); |
| 2533 | /* |
| 2534 | * Paranoia: do the types match? |
| 2535 | * In case of errors: we've received an act ack already, so what to do |
| 2536 | * about it? Logging the error should suffice for now. |
| 2537 | */ |
| 2538 | if (pchan_act != ts->dyn.pchan_want) |
| 2539 | LOGP(DRSL, LOGL_ERROR, |
| 2540 | "%s Requested transition does not match lchan type %s\n", |
| 2541 | gsm_ts_and_pchan_name(ts), |
Neels Hofmeyr | b74a2c8 | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2542 | gsm_lchant_name(lchan->type)); |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2543 | |
| 2544 | pchan_was = ts->dyn.pchan_is; |
| 2545 | ts->dyn.pchan_is = ts->dyn.pchan_want = pchan_act; |
| 2546 | |
Neels Hofmeyr | a0a08d8 | 2016-08-24 14:42:58 +0200 | [diff] [blame] | 2547 | if (pchan_was != ts->dyn.pchan_is) |
| 2548 | LOGP(DRSL, LOGL_INFO, "%s switchover from %s complete.\n", |
| 2549 | gsm_ts_and_pchan_name(ts), gsm_pchan_name(pchan_was)); |
Neels Hofmeyr | b91e600 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2550 | } |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2551 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2552 | /* Entry-point where L2 RSL from BTS enters */ |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 2553 | int abis_rsl_rcvmsg(struct msgb *msg) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2554 | { |
Holger Hans Peter Freyther | 19bab73 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2555 | struct abis_rsl_common_hdr *rslh; |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 2556 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2557 | |
Holger Hans Peter Freyther | 19bab73 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2558 | if (!msg) { |
| 2559 | DEBUGP(DRSL, "Empty RSL msg?..\n"); |
| 2560 | return -1; |
| 2561 | } |
| 2562 | |
| 2563 | if (msgb_l2len(msg) < sizeof(*rslh)) { |
| 2564 | DEBUGP(DRSL, "Truncated RSL message with l2len: %u\n", msgb_l2len(msg)); |
Harald Welte | f25b55e | 2012-05-31 20:22:34 +0200 | [diff] [blame] | 2565 | msgb_free(msg); |
Holger Hans Peter Freyther | 19bab73 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2566 | return -1; |
| 2567 | } |
| 2568 | |
| 2569 | rslh = msgb_l2(msg); |
| 2570 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2571 | switch (rslh->msg_discr & 0xfe) { |
| 2572 | case ABIS_RSL_MDISC_RLL: |
| 2573 | rc = abis_rsl_rx_rll(msg); |
| 2574 | break; |
| 2575 | case ABIS_RSL_MDISC_DED_CHAN: |
| 2576 | rc = abis_rsl_rx_dchan(msg); |
| 2577 | break; |
| 2578 | case ABIS_RSL_MDISC_COM_CHAN: |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2579 | rc = abis_rsl_rx_cchan(msg); |
| 2580 | break; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 2581 | case ABIS_RSL_MDISC_TRX: |
| 2582 | rc = abis_rsl_rx_trx(msg); |
| 2583 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2584 | case ABIS_RSL_MDISC_LOC: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2585 | LOGP(DRSL, LOGL_NOTICE, "unimplemented RSL msg disc 0x%02x\n", |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 2586 | rslh->msg_discr); |
| 2587 | break; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2588 | case ABIS_RSL_MDISC_IPACCESS: |
| 2589 | rc = abis_rsl_rx_ipacc(msg); |
| 2590 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2591 | default: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2592 | LOGP(DRSL, LOGL_NOTICE, "unknown RSL message discriminator " |
| 2593 | "0x%02x\n", rslh->msg_discr); |
Harald Welte | f25b55e | 2012-05-31 20:22:34 +0200 | [diff] [blame] | 2594 | rc = -EINVAL; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2595 | } |
Harald Welte | 4f4a390 | 2008-12-26 00:04:49 +0000 | [diff] [blame] | 2596 | msgb_free(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 2597 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2598 | } |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 2599 | |
Holger Hans Peter Freyther | 8cb4a0f | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2600 | int rsl_sms_cb_command(struct gsm_bts *bts, uint8_t chan_number, |
Harald Welte | 30f1f37 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2601 | struct rsl_ie_cb_cmd_type cb_command, |
| 2602 | const uint8_t *data, int len) |
Holger Hans Peter Freyther | 8cb4a0f | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2603 | { |
| 2604 | struct abis_rsl_dchan_hdr *dh; |
| 2605 | struct msgb *cb_cmd; |
| 2606 | |
| 2607 | cb_cmd = rsl_msgb_alloc(); |
| 2608 | if (!cb_cmd) |
| 2609 | return -1; |
| 2610 | |
Harald Welte | 30f1f37 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2611 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(cb_cmd, sizeof(*dh)); |
Holger Hans Peter Freyther | 8cb4a0f | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2612 | init_dchan_hdr(dh, RSL_MT_SMS_BC_CMD); |
Harald Welte | 30f1f37 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2613 | dh->c.msg_discr = ABIS_RSL_MDISC_COM_CHAN; |
| 2614 | dh->chan_nr = chan_number; /* TODO: check the chan config */ |
Holger Hans Peter Freyther | 8cb4a0f | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2615 | |
Harald Welte | 30f1f37 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2616 | msgb_tv_put(cb_cmd, RSL_IE_CB_CMD_TYPE, *(uint8_t*)&cb_command); |
Holger Hans Peter Freyther | 8cb4a0f | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2617 | msgb_tlv_put(cb_cmd, RSL_IE_SMSCB_MSG, len, data); |
| 2618 | |
Harald Welte | 30f1f37 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2619 | cb_cmd->dst = bts->c0->rsl_link; |
Holger Hans Peter Freyther | 8cb4a0f | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2620 | |
| 2621 | return abis_rsl_sendmsg(cb_cmd); |
| 2622 | } |
Dieter Spaar | 1664602 | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2623 | |
| 2624 | int rsl_nokia_si_begin(struct gsm_bts_trx *trx) |
| 2625 | { |
| 2626 | struct abis_rsl_common_hdr *ch; |
| 2627 | struct msgb *msg = rsl_msgb_alloc(); |
| 2628 | |
| 2629 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2630 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 2631 | ch->msg_type = 0x40; /* Nokia SI Begin */ |
| 2632 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2633 | msg->dst = trx->rsl_link; |
Dieter Spaar | 1664602 | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2634 | |
| 2635 | return abis_rsl_sendmsg(msg); |
| 2636 | } |
| 2637 | |
| 2638 | int rsl_nokia_si_end(struct gsm_bts_trx *trx) |
| 2639 | { |
| 2640 | struct abis_rsl_common_hdr *ch; |
| 2641 | struct msgb *msg = rsl_msgb_alloc(); |
| 2642 | |
| 2643 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2644 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 2645 | ch->msg_type = 0x41; /* Nokia SI End */ |
| 2646 | |
| 2647 | msgb_tv_put(msg, 0xFD, 0x00); /* Nokia Pagemode Info, No paging reorganisation required */ |
| 2648 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2649 | msg->dst = trx->rsl_link; |
Dieter Spaar | 1664602 | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2650 | |
| 2651 | return abis_rsl_sendmsg(msg); |
| 2652 | } |
| 2653 | |
| 2654 | int rsl_bs_power_control(struct gsm_bts_trx *trx, uint8_t channel, uint8_t reduction) |
| 2655 | { |
| 2656 | struct abis_rsl_common_hdr *ch; |
| 2657 | struct msgb *msg = rsl_msgb_alloc(); |
| 2658 | |
| 2659 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2660 | ch->msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
| 2661 | ch->msg_type = RSL_MT_BS_POWER_CONTROL; |
| 2662 | |
| 2663 | msgb_tv_put(msg, RSL_IE_CHAN_NR, channel); |
| 2664 | msgb_tv_put(msg, RSL_IE_BS_POWER, reduction); /* reduction in 2dB steps */ |
| 2665 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2666 | msg->dst = trx->rsl_link; |
Dieter Spaar | 1664602 | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2667 | |
| 2668 | return abis_rsl_sendmsg(msg); |
| 2669 | } |
Holger Hans Peter Freyther | 8582535 | 2011-12-27 22:24:17 +0100 | [diff] [blame] | 2670 | |
| 2671 | /** |
| 2672 | * Release all allocated SAPIs starting from @param start and |
| 2673 | * release them with the given release mode. Once the release |
| 2674 | * confirmation arrives it will be attempted to release the |
| 2675 | * the RF channel. |
| 2676 | */ |
| 2677 | int rsl_release_sapis_from(struct gsm_lchan *lchan, int start, |
| 2678 | enum rsl_rel_mode release_mode) |
| 2679 | { |
| 2680 | int no_sapi = 1; |
| 2681 | int sapi; |
| 2682 | |
| 2683 | for (sapi = start; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 2684 | uint8_t link_id; |
| 2685 | if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) |
| 2686 | continue; |
| 2687 | |
| 2688 | link_id = sapi; |
| 2689 | if (lchan->type == GSM_LCHAN_TCH_F || lchan->type == GSM_LCHAN_TCH_H) |
| 2690 | link_id |= 0x40; |
| 2691 | rsl_release_request(lchan, link_id, release_mode); |
| 2692 | no_sapi = 0; |
| 2693 | } |
| 2694 | |
| 2695 | return no_sapi; |
| 2696 | } |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 2697 | |
| 2698 | int rsl_start_t3109(struct gsm_lchan *lchan) |
| 2699 | { |
| 2700 | struct gsm_bts *bts = lchan->ts->trx->bts; |
| 2701 | |
| 2702 | /* Disabled, mostly legacy code */ |
| 2703 | if (bts->network->T3109 == 0) |
| 2704 | return -1; |
| 2705 | |
| 2706 | lchan->T3109.cb = t3109_expired; |
| 2707 | lchan->T3109.data = lchan; |
| 2708 | osmo_timer_schedule(&lchan->T3109, bts->network->T3109, 0); |
| 2709 | return 0; |
| 2710 | } |
Holger Hans Peter Freyther | 006e3d8 | 2012-12-25 23:45:14 +0100 | [diff] [blame] | 2711 | |
| 2712 | /** |
| 2713 | * \brief directly RF Channel Release the lchan |
| 2714 | * |
| 2715 | * When no SAPI was allocated, directly release the logical channel. This |
| 2716 | * should only be called from chan_alloc.c on channel release handling. In |
| 2717 | * case no SAPI was established the RF Channel can be directly released, |
| 2718 | */ |
| 2719 | int rsl_direct_rf_release(struct gsm_lchan *lchan) |
| 2720 | { |
| 2721 | int i; |
| 2722 | for (i = 0; i < ARRAY_SIZE(lchan->sapis); ++i) { |
| 2723 | if (lchan->sapis[i] != LCHAN_SAPI_UNUSED) { |
| 2724 | LOGP(DRSL, LOGL_ERROR, "%s SAPI(%d) still allocated.\n", |
| 2725 | gsm_lchan_name(lchan), i); |
| 2726 | return -1; |
| 2727 | } |
| 2728 | } |
| 2729 | |
| 2730 | /* Now release it */ |
| 2731 | return rsl_rf_chan_release(lchan, 0, SACCH_NONE); |
| 2732 | } |