Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1 | /* GSM Radio Signalling Link messages on the A-bis interface |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2 | * 3GPP TS 08.58 version 8.6.0 Release 1999 / ETSI TS 100 596 V8.6.0 */ |
| 3 | |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 4 | /* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org> |
Holger Hans Peter Freyther | e38af68 | 2011-12-27 22:24:17 +0100 | [diff] [blame] | 5 | * (C) 2012 by Holger Hans Peter Freyther |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 6 | * |
| 7 | * All Rights Reserved |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
Harald Welte | 0e3e88e | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 10 | * it under the terms of the GNU Affero General Public License as published by |
| 11 | * the Free Software Foundation; either version 3 of the License, or |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Harald Welte | 0e3e88e | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 17 | * GNU Affero General Public License for more details. |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 18 | * |
Harald Welte | 0e3e88e | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 19 | * You should have received a copy of the GNU Affero General Public License |
| 20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <stdio.h> |
| 25 | #include <stdlib.h> |
| 26 | #include <errno.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 27 | #include <netinet/in.h> |
| 28 | #include <arpa/inet.h> |
| 29 | |
| 30 | #include <openbsc/gsm_data.h> |
| 31 | #include <openbsc/gsm_04_08.h> |
Pablo Neira Ayuso | dd5fff4 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 32 | #include <osmocom/gsm/gsm_utils.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 33 | #include <openbsc/abis_rsl.h> |
| 34 | #include <openbsc/chan_alloc.h> |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 35 | #include <openbsc/bsc_rll.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 36 | #include <openbsc/debug.h> |
Pablo Neira Ayuso | dd5fff4 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 37 | #include <osmocom/gsm/tlv.h> |
Max | 3d94aca | 2016-05-11 12:45:13 +0200 | [diff] [blame] | 38 | #include <osmocom/gsm/protocol/gsm_04_08.h> |
| 39 | #include <osmocom/gsm/protocol/gsm_08_58.h> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 40 | #include <openbsc/paging.h> |
| 41 | #include <openbsc/signal.h> |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 42 | #include <openbsc/meas_rep.h> |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 43 | #include <openbsc/rtp_proxy.h> |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame] | 44 | #include <osmocom/abis/e1_input.h> |
Pablo Neira Ayuso | dd5fff4 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 45 | #include <osmocom/gsm/rsl.h> |
Pablo Neira Ayuso | dd5fff4 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 46 | #include <osmocom/core/talloc.h> |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 47 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 48 | #define RSL_ALLOC_SIZE 1024 |
| 49 | #define RSL_ALLOC_HEADROOM 128 |
| 50 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 51 | enum sacch_deact { |
| 52 | SACCH_NONE, |
| 53 | SACCH_DEACTIVATE, |
| 54 | }; |
| 55 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 56 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan); |
Holger Hans Peter Freyther | da9fb8c | 2014-04-06 12:21:05 +0200 | [diff] [blame] | 57 | static void error_timeout_cb(void *data); |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 58 | static int dyn_ts_switchover_continue(struct gsm_bts_trx_ts *ts); |
| 59 | static int dyn_ts_switchover_failed(struct gsm_bts_trx_ts *ts, int rc); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 60 | static void dyn_ts_switchover_complete(struct gsm_lchan *lchan); |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 61 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 62 | static void send_lchan_signal(int sig_no, struct gsm_lchan *lchan, |
| 63 | struct gsm_meas_rep *resp) |
| 64 | { |
| 65 | struct lchan_signal_data sig; |
| 66 | sig.lchan = lchan; |
| 67 | sig.mr = resp; |
Pablo Neira Ayuso | ef717c6 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 68 | osmo_signal_dispatch(SS_LCHAN, sig_no, &sig); |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 69 | } |
| 70 | |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 71 | static void do_lchan_free(struct gsm_lchan *lchan) |
| 72 | { |
Holger Hans Peter Freyther | da9fb8c | 2014-04-06 12:21:05 +0200 | [diff] [blame] | 73 | /* We start the error timer to make the channel available again */ |
| 74 | if (lchan->state == LCHAN_S_REL_ERR) { |
| 75 | lchan->error_timer.data = lchan; |
| 76 | lchan->error_timer.cb = error_timeout_cb; |
| 77 | osmo_timer_schedule(&lchan->error_timer, |
| 78 | lchan->ts->trx->bts->network->T3111 + 2, 0); |
| 79 | } else { |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 80 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | da9fb8c | 2014-04-06 12:21:05 +0200 | [diff] [blame] | 81 | } |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 82 | lchan_free(lchan); |
| 83 | } |
| 84 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 85 | static uint8_t mdisc_by_msgtype(uint8_t msg_type) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 86 | { |
| 87 | /* mask off the transparent bit ? */ |
| 88 | msg_type &= 0xfe; |
| 89 | |
| 90 | if ((msg_type & 0xf0) == 0x00) |
| 91 | return ABIS_RSL_MDISC_RLL; |
| 92 | if ((msg_type & 0xf0) == 0x10) { |
| 93 | if (msg_type >= 0x19 && msg_type <= 0x22) |
| 94 | return ABIS_RSL_MDISC_TRX; |
| 95 | else |
| 96 | return ABIS_RSL_MDISC_COM_CHAN; |
| 97 | } |
| 98 | if ((msg_type & 0xe0) == 0x20) |
| 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 | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 105 | uint8_t msg_type) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [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 | 0a77199 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 112 | /* call rsl_lchan_lookup and set the log context */ |
| 113 | static struct gsm_lchan *lchan_lookup(struct gsm_bts_trx *trx, uint8_t chan_nr) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 114 | { |
Neels Hofmeyr | 0a77199 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 115 | int rc; |
| 116 | struct gsm_lchan *lchan = rsl_lchan_lookup(trx, chan_nr, &rc); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 117 | |
Neels Hofmeyr | 0a77199 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 118 | if (!lchan) { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 119 | LOGP(DRSL, LOGL_ERROR, "unknown chan_nr=0x%02x\n", chan_nr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 120 | return NULL; |
| 121 | } |
| 122 | |
Neels Hofmeyr | 0a77199 | 2016-07-23 17:38:22 +0200 | [diff] [blame] | 123 | if (rc < 0) |
| 124 | LOGP(DRSL, LOGL_ERROR, "%s mismatching chan_nr=0x%02x\n", |
| 125 | gsm_ts_and_pchan_name(lchan->ts), chan_nr); |
| 126 | |
Harald Welte | 51d2a59 | 2010-03-26 21:28:59 +0800 | [diff] [blame] | 127 | log_set_context(BSC_CTX_LCHAN, lchan); |
Holger Hans Peter Freyther | 1a95fa8 | 2010-06-28 15:47:12 +0800 | [diff] [blame] | 128 | if (lchan->conn) |
| 129 | log_set_context(BSC_CTX_SUBSCR, lchan->conn->subscr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 130 | |
| 131 | return lchan; |
| 132 | } |
| 133 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 134 | /* As per TS 03.03 Section 2.2, the IMSI has 'not more than 15 digits' */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 135 | uint64_t str_to_imsi(const char *imsi_str) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 136 | { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 137 | uint64_t ret; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 138 | |
| 139 | ret = strtoull(imsi_str, NULL, 10); |
| 140 | |
| 141 | return ret; |
| 142 | } |
| 143 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 144 | static struct msgb *rsl_msgb_alloc(void) |
| 145 | { |
Harald Welte | 9cfc935 | 2009-06-26 19:39:35 +0200 | [diff] [blame] | 146 | return msgb_alloc_headroom(RSL_ALLOC_SIZE, RSL_ALLOC_HEADROOM, |
| 147 | "RSL"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | #define MACBLOCK_SIZE 23 |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 151 | static void pad_macblock(uint8_t *out, const uint8_t *in, int len) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 152 | { |
| 153 | memcpy(out, in, len); |
| 154 | |
| 155 | if (len < MACBLOCK_SIZE) |
| 156 | memset(out+len, 0x2b, MACBLOCK_SIZE-len); |
| 157 | } |
| 158 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 159 | /* Chapter 9.3.7: Encryption Information */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 160 | static int build_encr_info(uint8_t *out, struct gsm_lchan *lchan) |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 161 | { |
| 162 | *out++ = lchan->encr.alg_id & 0xff; |
| 163 | if (lchan->encr.key_len) |
| 164 | memcpy(out, lchan->encr.key, lchan->encr.key_len); |
| 165 | return lchan->encr.key_len + 1; |
| 166 | } |
| 167 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 168 | static void print_rsl_cause(int lvl, const uint8_t *cause_v, uint8_t cause_len) |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 169 | { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 170 | int i; |
| 171 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 172 | LOGPC(DRSL, lvl, "CAUSE=0x%02x(%s) ", |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 173 | cause_v[0], rsl_err_name(cause_v[0])); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 174 | for (i = 1; i < cause_len-1; i++) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 175 | LOGPC(DRSL, lvl, "%02x ", cause_v[i]); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 176 | } |
| 177 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 178 | static void lchan_act_tmr_cb(void *data) |
| 179 | { |
| 180 | struct gsm_lchan *lchan = data; |
| 181 | |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 182 | rsl_lchan_mark_broken(lchan, "activation timeout"); |
Daniel Willmann | 2731e73 | 2011-08-11 04:44:12 +0200 | [diff] [blame] | 183 | lchan_free(lchan); |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 184 | } |
| 185 | |
| 186 | static void lchan_deact_tmr_cb(void *data) |
| 187 | { |
| 188 | struct gsm_lchan *lchan = data; |
| 189 | |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 190 | rsl_lchan_mark_broken(lchan, "de-activation timeout"); |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 191 | lchan_free(lchan); |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 192 | } |
| 193 | |
| 194 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 195 | /* Send a BCCH_INFO message as per Chapter 8.5.1 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 196 | int rsl_bcch_info(struct gsm_bts_trx *trx, uint8_t type, |
| 197 | const uint8_t *data, int len) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 198 | { |
| 199 | struct abis_rsl_dchan_hdr *dh; |
| 200 | struct msgb *msg = rsl_msgb_alloc(); |
| 201 | |
| 202 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof*dh); |
| 203 | init_dchan_hdr(dh, RSL_MT_BCCH_INFO); |
| 204 | dh->chan_nr = RSL_CHAN_BCCH; |
| 205 | |
| 206 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 207 | msgb_tlv_put(msg, RSL_IE_FULL_BCCH_INFO, len, data); |
| 208 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 209 | msg->dst = trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 210 | |
| 211 | return abis_rsl_sendmsg(msg); |
| 212 | } |
| 213 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 214 | int rsl_sacch_filling(struct gsm_bts_trx *trx, uint8_t type, |
| 215 | const uint8_t *data, int len) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 216 | { |
| 217 | struct abis_rsl_common_hdr *ch; |
| 218 | struct msgb *msg = rsl_msgb_alloc(); |
| 219 | |
| 220 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 221 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 222 | ch->msg_type = RSL_MT_SACCH_FILL; |
| 223 | |
| 224 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 225 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
| 226 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 227 | msg->dst = trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 228 | |
| 229 | return abis_rsl_sendmsg(msg); |
| 230 | } |
| 231 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 232 | int rsl_sacch_info_modify(struct gsm_lchan *lchan, uint8_t type, |
| 233 | const uint8_t *data, int len) |
Harald Welte | 10b7d8f | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 234 | { |
| 235 | struct abis_rsl_dchan_hdr *dh; |
| 236 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 237 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 10b7d8f | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 238 | |
| 239 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 240 | init_dchan_hdr(dh, RSL_MT_SACCH_INFO_MODIFY); |
| 241 | dh->chan_nr = chan_nr; |
| 242 | |
| 243 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 244 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
| 245 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 246 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 10b7d8f | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 247 | |
| 248 | return abis_rsl_sendmsg(msg); |
| 249 | } |
| 250 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 251 | int rsl_chan_bs_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int db) |
| 252 | { |
| 253 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 254 | struct msgb *msg; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 255 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 256 | |
| 257 | db = abs(db); |
| 258 | if (db > 30) |
| 259 | return -EINVAL; |
| 260 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 261 | msg = rsl_msgb_alloc(); |
| 262 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 263 | lchan->bs_power = db/2; |
| 264 | if (fpc) |
| 265 | lchan->bs_power |= 0x10; |
| 266 | |
| 267 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 268 | init_dchan_hdr(dh, RSL_MT_BS_POWER_CONTROL); |
| 269 | dh->chan_nr = chan_nr; |
| 270 | |
| 271 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 272 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 273 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 274 | |
| 275 | return abis_rsl_sendmsg(msg); |
| 276 | } |
| 277 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 278 | int rsl_chan_ms_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int dbm) |
| 279 | { |
| 280 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 281 | struct msgb *msg; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 282 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 283 | int ctl_lvl; |
| 284 | |
Harald Welte | c4dcda0 | 2009-08-09 14:45:18 +0200 | [diff] [blame] | 285 | ctl_lvl = ms_pwr_ctl_lvl(lchan->ts->trx->bts->band, dbm); |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 286 | if (ctl_lvl < 0) |
| 287 | return ctl_lvl; |
| 288 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 289 | msg = rsl_msgb_alloc(); |
| 290 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 291 | lchan->ms_power = ctl_lvl; |
| 292 | |
| 293 | if (fpc) |
| 294 | lchan->ms_power |= 0x20; |
| 295 | |
| 296 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 297 | init_dchan_hdr(dh, RSL_MT_MS_POWER_CONTROL); |
| 298 | dh->chan_nr = chan_nr; |
| 299 | |
| 300 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 301 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 302 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 303 | |
| 304 | return abis_rsl_sendmsg(msg); |
| 305 | } |
| 306 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 307 | static int channel_mode_from_lchan(struct rsl_ie_chan_mode *cm, |
| 308 | struct gsm_lchan *lchan) |
| 309 | { |
Holger Hans Peter Freyther | fad7365 | 2013-03-09 17:50:10 +0100 | [diff] [blame] | 310 | memset(cm, 0, sizeof(*cm)); |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 311 | |
| 312 | /* FIXME: what to do with data calls ? */ |
Max | 3d94aca | 2016-05-11 12:45:13 +0200 | [diff] [blame] | 313 | cm->dtx_dtu = 0; |
| 314 | if (lchan->ts->trx->bts->dtxu != GSM48_DTX_SHALL_NOT_BE_USED) |
| 315 | cm->dtx_dtu |= RSL_CMOD_DTXu; |
| 316 | if (lchan->ts->trx->bts->dtxd) |
| 317 | cm->dtx_dtu |= RSL_CMOD_DTXd; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 318 | |
| 319 | /* set TCH Speech/Data */ |
| 320 | cm->spd_ind = lchan->rsl_cmode; |
| 321 | |
Harald Welte | 951e351 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 322 | if (lchan->rsl_cmode == RSL_CMOD_SPD_SIGN && |
| 323 | lchan->tch_mode != GSM48_CMODE_SIGN) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 324 | LOGP(DRSL, LOGL_ERROR, "unsupported: rsl_mode == signalling, " |
Harald Welte | 951e351 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 325 | "but tch_mode != signalling\n"); |
| 326 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 327 | switch (lchan->type) { |
| 328 | case GSM_LCHAN_SDCCH: |
| 329 | cm->chan_rt = RSL_CMOD_CRT_SDCCH; |
| 330 | break; |
| 331 | case GSM_LCHAN_TCH_F: |
| 332 | cm->chan_rt = RSL_CMOD_CRT_TCH_Bm; |
| 333 | break; |
| 334 | case GSM_LCHAN_TCH_H: |
| 335 | cm->chan_rt = RSL_CMOD_CRT_TCH_Lm; |
| 336 | break; |
| 337 | case GSM_LCHAN_NONE: |
| 338 | case GSM_LCHAN_UNKNOWN: |
| 339 | default: |
Neels Hofmeyr | 4e472ba | 2016-07-18 23:47:24 +0200 | [diff] [blame] | 340 | LOGP(DRSL, LOGL_ERROR, |
| 341 | "unsupported activation lchan->type %u %s\n", |
| 342 | lchan->type, gsm_lchant_name(lchan->type)); |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 343 | return -EINVAL; |
| 344 | } |
| 345 | |
| 346 | switch (lchan->tch_mode) { |
| 347 | case GSM48_CMODE_SIGN: |
| 348 | cm->chan_rate = 0; |
| 349 | break; |
| 350 | case GSM48_CMODE_SPEECH_V1: |
| 351 | cm->chan_rate = RSL_CMOD_SP_GSM1; |
| 352 | break; |
| 353 | case GSM48_CMODE_SPEECH_EFR: |
| 354 | cm->chan_rate = RSL_CMOD_SP_GSM2; |
| 355 | break; |
| 356 | case GSM48_CMODE_SPEECH_AMR: |
| 357 | cm->chan_rate = RSL_CMOD_SP_GSM3; |
| 358 | break; |
| 359 | case GSM48_CMODE_DATA_14k5: |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 360 | case GSM48_CMODE_DATA_12k0: |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 361 | case GSM48_CMODE_DATA_6k0: |
Harald Welte | e75a47d | 2012-08-24 15:33:56 +0200 | [diff] [blame] | 362 | switch (lchan->csd_mode) { |
| 363 | case LCHAN_CSD_M_NT: |
| 364 | /* non-transparent CSD with RLP */ |
| 365 | switch (lchan->tch_mode) { |
| 366 | case GSM48_CMODE_DATA_14k5: |
| 367 | cm->chan_rate = RSL_CMOD_SP_NT_14k5; |
| 368 | break; |
| 369 | case GSM48_CMODE_DATA_12k0: |
| 370 | cm->chan_rate = RSL_CMOD_SP_NT_12k0; |
| 371 | break; |
| 372 | case GSM48_CMODE_DATA_6k0: |
| 373 | cm->chan_rate = RSL_CMOD_SP_NT_6k0; |
| 374 | break; |
| 375 | default: |
Neels Hofmeyr | 4e472ba | 2016-07-18 23:47:24 +0200 | [diff] [blame] | 376 | LOGP(DRSL, LOGL_ERROR, |
| 377 | "unsupported lchan->tch_mode %u\n", |
| 378 | lchan->tch_mode); |
Harald Welte | e75a47d | 2012-08-24 15:33:56 +0200 | [diff] [blame] | 379 | return -EINVAL; |
| 380 | } |
| 381 | break; |
| 382 | /* transparent data services below */ |
| 383 | case LCHAN_CSD_M_T_1200_75: |
| 384 | cm->chan_rate = RSL_CMOD_CSD_T_1200_75; |
| 385 | break; |
| 386 | case LCHAN_CSD_M_T_600: |
| 387 | cm->chan_rate = RSL_CMOD_CSD_T_600; |
| 388 | break; |
| 389 | case LCHAN_CSD_M_T_1200: |
| 390 | cm->chan_rate = RSL_CMOD_CSD_T_1200; |
| 391 | break; |
| 392 | case LCHAN_CSD_M_T_2400: |
| 393 | cm->chan_rate = RSL_CMOD_CSD_T_2400; |
| 394 | break; |
| 395 | case LCHAN_CSD_M_T_9600: |
| 396 | cm->chan_rate = RSL_CMOD_CSD_T_9600; |
| 397 | break; |
| 398 | case LCHAN_CSD_M_T_14400: |
| 399 | cm->chan_rate = RSL_CMOD_CSD_T_14400; |
| 400 | break; |
| 401 | case LCHAN_CSD_M_T_29000: |
| 402 | cm->chan_rate = RSL_CMOD_CSD_T_29000; |
| 403 | break; |
| 404 | case LCHAN_CSD_M_T_32000: |
| 405 | cm->chan_rate = RSL_CMOD_CSD_T_32000; |
| 406 | break; |
| 407 | default: |
Neels Hofmeyr | 4e472ba | 2016-07-18 23:47:24 +0200 | [diff] [blame] | 408 | LOGP(DRSL, LOGL_ERROR, |
| 409 | "unsupported lchan->csd_mode %u\n", |
| 410 | lchan->csd_mode); |
Harald Welte | e75a47d | 2012-08-24 15:33:56 +0200 | [diff] [blame] | 411 | return -EINVAL; |
| 412 | } |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 413 | default: |
Neels Hofmeyr | 4e472ba | 2016-07-18 23:47:24 +0200 | [diff] [blame] | 414 | LOGP(DRSL, LOGL_ERROR, |
| 415 | "unsupported lchan->tch_mode %u\n", |
| 416 | lchan->tch_mode); |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 417 | return -EINVAL; |
| 418 | } |
| 419 | |
| 420 | return 0; |
| 421 | } |
| 422 | |
Holger Hans Peter Freyther | ae27c1b | 2015-08-20 19:32:46 +0200 | [diff] [blame] | 423 | static void mr_config_for_bts(struct gsm_lchan *lchan, struct msgb *msg) |
| 424 | { |
| 425 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) |
| 426 | msgb_tlv_put(msg, RSL_IE_MR_CONFIG, lchan->mr_bts_lv[0], |
| 427 | lchan->mr_bts_lv + 1); |
| 428 | } |
| 429 | |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 430 | static enum gsm_phys_chan_config pchan_for_lchant(enum gsm_chan_t type) |
| 431 | { |
| 432 | switch (type) { |
| 433 | case GSM_LCHAN_TCH_F: |
| 434 | return GSM_PCHAN_TCH_F; |
| 435 | case GSM_LCHAN_TCH_H: |
| 436 | return GSM_PCHAN_TCH_H; |
| 437 | case GSM_LCHAN_NONE: |
| 438 | case GSM_LCHAN_PDTCH: |
| 439 | /* TODO: so far lchan->type is NONE in PDCH mode. PDTCH is only |
| 440 | * used in osmo-bts. Maybe set PDTCH and drop the NONE case |
| 441 | * here. */ |
| 442 | return GSM_PCHAN_PDCH; |
| 443 | default: |
| 444 | return GSM_PCHAN_UNKNOWN; |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | /*! Tx simplified channel activation message for non-standard PDCH type. */ |
| 449 | static int rsl_chan_activate_lchan_as_pdch(struct gsm_lchan *lchan) |
| 450 | { |
| 451 | struct msgb *msg; |
| 452 | struct abis_rsl_dchan_hdr *dh; |
| 453 | |
| 454 | /* This might be called after release of the second lchan of a TCH/H, |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 455 | * but PDCH activation must always happen on the first lchan. Make sure |
| 456 | * the calling code passes the correct lchan. */ |
| 457 | OSMO_ASSERT(lchan == lchan->ts->lchan); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 458 | |
| 459 | rsl_lchan_set_state(lchan, LCHAN_S_ACT_REQ); |
| 460 | |
| 461 | msg = rsl_msgb_alloc(); |
| 462 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 463 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 464 | dh->chan_nr = gsm_lchan_as_pchan2chan_nr(lchan, GSM_PCHAN_PDCH); |
| 465 | |
| 466 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, RSL_ACT_OSMO_PDCH); |
| 467 | |
| 468 | msg->dst = lchan->ts->trx->rsl_link; |
| 469 | |
| 470 | return abis_rsl_sendmsg(msg); |
| 471 | } |
| 472 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 473 | /* Chapter 8.4.1 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 474 | int rsl_chan_activate_lchan(struct gsm_lchan *lchan, uint8_t act_type, |
Andreas Eversberg | 3ca9af3 | 2013-10-11 12:55:35 +0200 | [diff] [blame] | 475 | uint8_t ho_ref) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 476 | { |
| 477 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 478 | struct msgb *msg; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 479 | int rc; |
Harald Welte | dea24e9 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 480 | uint8_t *len; |
Andreas Eversberg | 3ca9af3 | 2013-10-11 12:55:35 +0200 | [diff] [blame] | 481 | uint8_t ta; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 482 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 483 | struct rsl_ie_chan_mode cm; |
laforge | f723cf0 | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 484 | struct gsm48_chan_desc cd; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 485 | |
Neels Hofmeyr | b3985cf | 2016-07-14 02:51:13 +0200 | [diff] [blame] | 486 | /* If a TCH_F/PDCH TS is in PDCH mode, deactivate PDCH first. */ |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 487 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_PDCH |
Neels Hofmeyr | 5a3c23c | 2016-06-14 14:08:35 +0200 | [diff] [blame] | 488 | && (lchan->ts->flags & TS_F_PDCH_ACTIVE)) { |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 489 | /* store activation type and handover reference */ |
Neels Hofmeyr | 3c0df95 | 2016-07-23 21:00:51 +0200 | [diff] [blame] | 490 | lchan->dyn.act_type = act_type; |
| 491 | lchan->dyn.ho_ref = ho_ref; |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 492 | return rsl_ipacc_pdch_activate(lchan->ts, 0); |
| 493 | } |
| 494 | |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 495 | /* |
| 496 | * If necessary, release PDCH on dynamic TS. Note that sending a |
| 497 | * release here is only necessary when in PDCH mode; for TCH types, an |
| 498 | * RSL RF Chan Release is initiated by the BTS when a voice call ends, |
| 499 | * so when we reach this, it will already be released. If a dyn TS is |
| 500 | * in PDCH mode, it is still active and we need to initiate a release |
| 501 | * from the BSC side here. |
| 502 | * |
| 503 | * If pchan_is != pchan_want, the PDCH has already been taken down and |
| 504 | * the switchover now needs to enable the TCH lchan. |
| 505 | * |
| 506 | * To switch a dyn TS between TCH/H and TCH/F, it is sufficient to send |
| 507 | * a chan activ with the new lchan type, because it will already be |
| 508 | * released. |
| 509 | */ |
| 510 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH |
| 511 | && lchan->ts->dyn.pchan_is == GSM_PCHAN_PDCH |
| 512 | && lchan->ts->dyn.pchan_is == lchan->ts->dyn.pchan_want) { |
| 513 | enum gsm_phys_chan_config pchan_want; |
| 514 | pchan_want = pchan_for_lchant(lchan->type); |
| 515 | if (lchan->ts->dyn.pchan_is != pchan_want) { |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 516 | /* |
| 517 | * Make sure to record on lchan[0] so that we'll find |
| 518 | * it after the PDCH release. |
| 519 | */ |
| 520 | struct gsm_lchan *lchan0 = lchan->ts->lchan; |
| 521 | lchan0->dyn.act_type = act_type, |
| 522 | lchan0->dyn.ho_ref = ho_ref; |
| 523 | lchan0->dyn.rqd_ref = lchan->rqd_ref; |
| 524 | lchan0->dyn.rqd_ta = lchan->rqd_ta; |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 525 | lchan->rqd_ref = NULL; |
| 526 | lchan->rqd_ta = 0; |
| 527 | DEBUGP(DRSL, "%s saved rqd_ref=%p ta=%u\n", |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 528 | gsm_lchan_name(lchan0), lchan0->rqd_ref, |
| 529 | lchan0->rqd_ta); |
| 530 | return dyn_ts_switchover_start(lchan->ts, pchan_want); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 531 | } |
| 532 | } |
| 533 | |
| 534 | DEBUGP(DRSL, "%s Tx RSL Channel Activate with act_type=%s\n", |
| 535 | gsm_ts_and_pchan_name(lchan->ts), |
| 536 | rsl_act_type_name(act_type)); |
| 537 | |
| 538 | if (act_type == RSL_ACT_OSMO_PDCH) { |
| 539 | if (lchan->ts->pchan != GSM_PCHAN_TCH_F_TCH_H_PDCH) { |
| 540 | LOGP(DRSL, LOGL_ERROR, |
| 541 | "%s PDCH channel activation only allowed on %s\n", |
| 542 | gsm_ts_and_pchan_name(lchan->ts), |
| 543 | gsm_pchan_name(GSM_PCHAN_TCH_F_TCH_H_PDCH)); |
| 544 | return -EINVAL; |
| 545 | } |
| 546 | return rsl_chan_activate_lchan_as_pdch(lchan); |
| 547 | } |
| 548 | |
| 549 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH |
| 550 | && lchan->ts->dyn.pchan_want == GSM_PCHAN_PDCH) { |
| 551 | LOGP(DRSL, LOGL_ERROR, |
| 552 | "%s Expected PDCH activation kind\n", |
| 553 | gsm_ts_and_pchan_name(lchan->ts)); |
| 554 | return -EINVAL; |
| 555 | } |
| 556 | |
Neels Hofmeyr | 89231d2 | 2016-07-23 19:49:58 +0200 | [diff] [blame] | 557 | rc = channel_mode_from_lchan(&cm, lchan); |
| 558 | if (rc < 0) { |
| 559 | LOGP(DRSL, LOGL_ERROR, |
| 560 | "%s Cannot find channel mode from lchan type\n", |
| 561 | gsm_ts_and_pchan_name(lchan->ts)); |
| 562 | return rc; |
| 563 | } |
| 564 | |
Neels Hofmeyr | 10b0f1d | 2016-06-14 13:12:00 +0200 | [diff] [blame] | 565 | rsl_lchan_set_state(lchan, LCHAN_S_ACT_REQ); |
| 566 | |
Andreas Eversberg | 3ca9af3 | 2013-10-11 12:55:35 +0200 | [diff] [blame] | 567 | ta = lchan->rqd_ta; |
| 568 | |
| 569 | /* BS11 requires TA shifted by 2 bits */ |
| 570 | if (lchan->ts->trx->bts->type == GSM_BTS_TYPE_BS11) |
| 571 | ta <<= 2; |
| 572 | |
Holger Hans Peter Freyther | 11b0140 | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 573 | memset(&cd, 0, sizeof(cd)); |
laforge | f723cf0 | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 574 | gsm48_lchan2chan_desc(&cd, lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 575 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 576 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 577 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 578 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
Neels Hofmeyr | e88e535 | 2016-07-23 19:51:09 +0200 | [diff] [blame] | 579 | |
| 580 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH) |
| 581 | dh->chan_nr = gsm_lchan_as_pchan2chan_nr( |
| 582 | lchan, lchan->ts->dyn.pchan_want); |
| 583 | else |
| 584 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 585 | |
| 586 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 587 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 588 | (uint8_t *) &cm); |
Holger Hans Peter Freyther | 11b0140 | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 589 | |
| 590 | /* |
| 591 | * The Channel Identification is needed for Phase1 phones |
| 592 | * and it contains the GSM48 Channel Description and the |
| 593 | * Mobile Allocation. The GSM 08.58 asks for the Mobile |
| 594 | * Allocation to have a length of zero. We are using the |
| 595 | * msgb_l3len to calculate the length of both messages. |
| 596 | */ |
laforge | f723cf0 | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 597 | msgb_v_put(msg, RSL_IE_CHAN_IDENT); |
Harald Welte | dea24e9 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 598 | len = msgb_put(msg, 1); |
Dieter Spaar | 18a55f6 | 2011-07-27 23:40:33 +0200 | [diff] [blame] | 599 | msgb_tv_fixed_put(msg, GSM48_IE_CHANDESC_2, sizeof(cd), (const uint8_t *) &cd); |
Holger Hans Peter Freyther | 4cab442 | 2010-06-30 12:06:20 +0800 | [diff] [blame] | 600 | |
| 601 | if (lchan->ts->hopping.enabled) |
| 602 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, lchan->ts->hopping.ma_len, |
| 603 | lchan->ts->hopping.ma_data); |
| 604 | else |
| 605 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, 0, NULL); |
Holger Hans Peter Freyther | 11b0140 | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 606 | |
| 607 | /* update the calculated size */ |
| 608 | msg->l3h = len + 1; |
| 609 | *len = msgb_l3len(msg); |
| 610 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 611 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 612 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 613 | rc = build_encr_info(encr_info, lchan); |
| 614 | if (rc > 0) |
| 615 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 616 | } |
| 617 | |
Harald Welte | b90d7bd | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 618 | switch (act_type) { |
| 619 | case RSL_ACT_INTER_ASYNC: |
| 620 | case RSL_ACT_INTER_SYNC: |
| 621 | msgb_tv_put(msg, RSL_IE_HANDO_REF, ho_ref); |
| 622 | break; |
| 623 | default: |
| 624 | break; |
| 625 | } |
| 626 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 627 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 628 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 629 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
Holger Hans Peter Freyther | ae27c1b | 2015-08-20 19:32:46 +0200 | [diff] [blame] | 630 | mr_config_for_bts(lchan, msg); |
Holger Hans Peter Freyther | 6fe8ab9 | 2010-01-28 04:45:05 +0100 | [diff] [blame] | 631 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 632 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 633 | |
| 634 | return abis_rsl_sendmsg(msg); |
| 635 | } |
| 636 | |
Harald Welte | 8e77049 | 2009-07-29 11:38:15 +0200 | [diff] [blame] | 637 | /* Chapter 8.4.9: Modify channel mode on BTS side */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 638 | int rsl_chan_mode_modify_req(struct gsm_lchan *lchan) |
| 639 | { |
| 640 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 641 | struct msgb *msg; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 642 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 643 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 644 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 645 | struct rsl_ie_chan_mode cm; |
| 646 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 647 | rc = channel_mode_from_lchan(&cm, lchan); |
| 648 | if (rc < 0) |
| 649 | return rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 650 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 651 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 652 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 653 | init_dchan_hdr(dh, RSL_MT_MODE_MODIFY_REQ); |
| 654 | dh->chan_nr = chan_nr; |
| 655 | |
| 656 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 657 | (uint8_t *) &cm); |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 658 | |
| 659 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 660 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 661 | rc = build_encr_info(encr_info, lchan); |
| 662 | if (rc > 0) |
| 663 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 664 | } |
| 665 | |
Holger Hans Peter Freyther | ae27c1b | 2015-08-20 19:32:46 +0200 | [diff] [blame] | 666 | mr_config_for_bts(lchan, msg); |
Holger Hans Peter Freyther | 3cce58f | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 667 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 668 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 669 | |
| 670 | return abis_rsl_sendmsg(msg); |
| 671 | } |
| 672 | |
| 673 | /* Chapter 8.4.6: Send the encryption command with given L3 info */ |
| 674 | int rsl_encryption_cmd(struct msgb *msg) |
| 675 | { |
| 676 | struct abis_rsl_dchan_hdr *dh; |
| 677 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 678 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 679 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
| 680 | uint8_t l3_len = msg->len; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 681 | int rc; |
| 682 | |
| 683 | /* First push the L3 IE tag and length */ |
| 684 | msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len); |
| 685 | |
| 686 | /* then the link identifier (SAPI0, main sign link) */ |
| 687 | msgb_tv_push(msg, RSL_IE_LINK_IDENT, 0); |
| 688 | |
| 689 | /* then encryption information */ |
| 690 | rc = build_encr_info(encr_info, lchan); |
| 691 | if (rc <= 0) |
| 692 | return rc; |
| 693 | msgb_tlv_push(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 694 | |
| 695 | /* and finally the DCHAN header */ |
| 696 | dh = (struct abis_rsl_dchan_hdr *) msgb_push(msg, sizeof(*dh)); |
| 697 | init_dchan_hdr(dh, RSL_MT_ENCR_CMD); |
| 698 | dh->chan_nr = chan_nr; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 699 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 700 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 701 | |
| 702 | return abis_rsl_sendmsg(msg); |
| 703 | } |
| 704 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 705 | /* Chapter 8.4.5 / 4.6: Deactivate the SACCH after 04.08 RR CHAN RELEASE */ |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 706 | int rsl_deact_sacch(struct gsm_lchan *lchan) |
| 707 | { |
| 708 | struct abis_rsl_dchan_hdr *dh; |
| 709 | struct msgb *msg = rsl_msgb_alloc(); |
| 710 | |
| 711 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 712 | init_dchan_hdr(dh, RSL_MT_DEACTIVATE_SACCH); |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 713 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 714 | |
| 715 | msg->lchan = lchan; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 716 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 717 | |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 718 | DEBUGP(DRSL, "%s DEACTivate SACCH CMD\n", gsm_lchan_name(lchan)); |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 719 | |
| 720 | return abis_rsl_sendmsg(msg); |
| 721 | } |
| 722 | |
Neels Hofmeyr | 4c13663 | 2016-08-24 14:44:11 +0200 | [diff] [blame] | 723 | static bool dyn_ts_should_switch_to_pdch(struct gsm_bts_trx_ts *ts) |
| 724 | { |
| 725 | int ss; |
| 726 | |
| 727 | if (ts->pchan != GSM_PCHAN_TCH_F_TCH_H_PDCH) |
| 728 | return false; |
| 729 | |
| 730 | if (ts->trx->bts->gprs.mode == BTS_GPRS_NONE) |
| 731 | return false; |
| 732 | |
| 733 | /* Already in PDCH mode? */ |
| 734 | if (ts->dyn.pchan_is == GSM_PCHAN_PDCH) |
| 735 | return false; |
| 736 | |
| 737 | /* See if all lchans are released. */ |
| 738 | for (ss = 0; ss < ts_subslots(ts); ss++) { |
| 739 | struct gsm_lchan *lc = &ts->lchan[ss]; |
| 740 | if (lc->state != LCHAN_S_NONE) { |
Neels Hofmeyr | 7445cf1 | 2016-08-24 14:48:39 +0200 | [diff] [blame] | 741 | DEBUGP(DRSL, "%s lchan %u still in use" |
| 742 | " (type=%s,state=%s)\n", |
| 743 | gsm_ts_and_pchan_name(ts), lc->nr, |
| 744 | gsm_lchant_name(lc->type), |
| 745 | gsm_lchans_name(lc->state)); |
Neels Hofmeyr | 4c13663 | 2016-08-24 14:44:11 +0200 | [diff] [blame] | 746 | /* An lchan is still used. */ |
| 747 | return false; |
| 748 | } |
| 749 | } |
| 750 | |
| 751 | /* All channels are released, go to PDCH mode. */ |
| 752 | DEBUGP(DRSL, "%s back to PDCH\n", |
| 753 | gsm_ts_and_pchan_name(ts)); |
| 754 | return true; |
| 755 | } |
| 756 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 757 | static void error_timeout_cb(void *data) |
| 758 | { |
| 759 | struct gsm_lchan *lchan = data; |
| 760 | if (lchan->state != LCHAN_S_REL_ERR) { |
| 761 | LOGP(DRSL, LOGL_ERROR, "%s error timeout but not in error state: %d\n", |
| 762 | gsm_lchan_name(lchan), lchan->state); |
| 763 | return; |
| 764 | } |
| 765 | |
| 766 | /* go back to the none state */ |
Harald Welte | fddaba5 | 2012-11-13 04:26:22 +0100 | [diff] [blame] | 767 | LOGP(DRSL, LOGL_INFO, "%s is back in operation.\n", gsm_lchan_name(lchan)); |
Holger Hans Peter Freyther | 456fb9d | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 768 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
Neels Hofmeyr | ff1d734 | 2016-06-21 20:55:14 +0200 | [diff] [blame] | 769 | |
Neels Hofmeyr | 31b2630 | 2016-07-06 14:39:04 +0200 | [diff] [blame] | 770 | /* Put PDCH channel back into PDCH mode, if GPRS is enabled */ |
| 771 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_PDCH |
| 772 | && lchan->ts->trx->bts->gprs.mode != BTS_GPRS_NONE) |
Neels Hofmeyr | ff1d734 | 2016-06-21 20:55:14 +0200 | [diff] [blame] | 773 | rsl_ipacc_pdch_activate(lchan->ts, 1); |
Neels Hofmeyr | 982f0ea | 2016-08-24 14:45:44 +0200 | [diff] [blame] | 774 | |
| 775 | if (dyn_ts_should_switch_to_pdch(lchan->ts)) |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 776 | dyn_ts_switchover_start(lchan->ts, GSM_PCHAN_PDCH); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 777 | } |
| 778 | |
Harald Welte | 08011e2 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 779 | static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan); |
| 780 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 781 | /* Chapter 8.4.14 / 4.7: Tell BTS to release the radio channel */ |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 782 | static int rsl_rf_chan_release(struct gsm_lchan *lchan, int error, |
| 783 | enum sacch_deact deact_sacch) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 784 | { |
| 785 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 786 | struct msgb *msg; |
Harald Welte | 08011e2 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 787 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 788 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 789 | /* Stop timers that should lead to a channel release */ |
| 790 | osmo_timer_del(&lchan->T3109); |
| 791 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 792 | if (lchan->state == LCHAN_S_REL_ERR) { |
Neels Hofmeyr | f0b8e8b | 2016-08-24 17:02:19 +0200 | [diff] [blame] | 793 | LOGP(DRSL, LOGL_NOTICE, "%s is in error state, not sending release.\n", |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 794 | gsm_lchan_name(lchan)); |
| 795 | return -1; |
| 796 | } |
| 797 | |
| 798 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 799 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 800 | init_dchan_hdr(dh, RSL_MT_RF_CHAN_REL); |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 801 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 802 | |
| 803 | msg->lchan = lchan; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 804 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 805 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 806 | DEBUGP(DRSL, "%s RF Channel Release CMD due error %d\n", gsm_lchan_name(lchan), error); |
| 807 | |
| 808 | if (error) { |
Holger Hans Peter Freyther | 701a647 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 809 | /* |
| 810 | * FIXME: GSM 04.08 gives us two options for the abnormal |
| 811 | * chanel release. This can be either like in the non-existent |
| 812 | * sub-lcuase 3.5.1 or for the main signalling link deactivate |
| 813 | * the SACCH, start timer T3109 and consider the channel as |
| 814 | * released. |
| 815 | * |
| 816 | * This code is doing the later for all raido links and not |
| 817 | * only the main link. Right now all SAPIs are released on the |
| 818 | * local end, the SACCH will be de-activated and right now the |
| 819 | * T3111 will be started. First T3109 should be started and then |
| 820 | * the T3111. |
| 821 | * |
| 822 | * TODO: Move this out of the function. |
| 823 | */ |
| 824 | |
| 825 | /* |
| 826 | * sacch de-activate and "local end release" |
| 827 | */ |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 828 | if (deact_sacch == SACCH_DEACTIVATE) |
| 829 | rsl_deact_sacch(lchan); |
Holger Hans Peter Freyther | 701a647 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 830 | rsl_release_sapis_from(lchan, 0, RSL_REL_LOCAL_END); |
| 831 | |
| 832 | /* |
| 833 | * TODO: start T3109 now. |
| 834 | */ |
Holger Hans Peter Freyther | 456fb9d | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 835 | rsl_lchan_set_state(lchan, LCHAN_S_REL_ERR); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 836 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 837 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 838 | /* Start another timer or assume the BTS sends a ACK/NACK? */ |
| 839 | lchan->act_timer.cb = lchan_deact_tmr_cb; |
| 840 | lchan->act_timer.data = lchan; |
| 841 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 842 | |
Harald Welte | 08011e2 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 843 | rc = abis_rsl_sendmsg(msg); |
| 844 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 845 | /* BTS will respond by RF CHAN REL ACK */ |
Harald Welte | 08011e2 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 846 | return rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 847 | } |
| 848 | |
Holger Hans Peter Freyther | 29eb19b | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 849 | /* |
| 850 | * Special handling for channel releases in the error case. |
| 851 | */ |
| 852 | static int rsl_rf_chan_release_err(struct gsm_lchan *lchan) |
| 853 | { |
| 854 | if (lchan->state != LCHAN_S_ACTIVE) |
| 855 | return 0; |
| 856 | return rsl_rf_chan_release(lchan, 1, SACCH_DEACTIVATE); |
| 857 | } |
| 858 | |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 859 | static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan) |
| 860 | { |
Neels Hofmeyr | aff130f | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 861 | struct gsm_bts_trx_ts *ts = lchan->ts; |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 862 | |
| 863 | DEBUGP(DRSL, "%s RF CHANNEL RELEASE ACK\n", gsm_lchan_name(lchan)); |
| 864 | |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 865 | /* Stop all pending timers */ |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 866 | osmo_timer_del(&lchan->act_timer); |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 867 | osmo_timer_del(&lchan->T3111); |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 868 | |
Holger Hans Peter Freyther | 6f8ae69 | 2015-04-04 19:35:22 +0200 | [diff] [blame] | 869 | /* |
| 870 | * The BTS didn't respond within the timeout to our channel |
| 871 | * release request and we have marked the channel as broken. |
| 872 | * Now we do receive an ACK and let's be conservative. If it |
| 873 | * is a sysmoBTS we know that only one RF Channel Release ACK |
| 874 | * will be sent. So let's "repair" the channel. |
| 875 | */ |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 876 | if (lchan->state == LCHAN_S_BROKEN) { |
Neels Hofmeyr | aff130f | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 877 | int do_free = is_sysmobts_v2(ts->trx->bts); |
Holger Hans Peter Freyther | 6f8ae69 | 2015-04-04 19:35:22 +0200 | [diff] [blame] | 878 | LOGP(DRSL, LOGL_NOTICE, |
| 879 | "%s CHAN REL ACK for broken channel. %s.\n", |
| 880 | gsm_lchan_name(lchan), |
| 881 | do_free ? "Releasing it" : "Keeping it broken"); |
| 882 | if (do_free) |
| 883 | do_lchan_free(lchan); |
Neels Hofmeyr | a843076 | 2016-08-24 17:02:37 +0200 | [diff] [blame] | 884 | if (dyn_ts_should_switch_to_pdch(lchan->ts)) |
| 885 | dyn_ts_switchover_start(lchan->ts, GSM_PCHAN_PDCH); |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 886 | return 0; |
| 887 | } |
| 888 | |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 889 | if (lchan->state != LCHAN_S_REL_REQ && lchan->state != LCHAN_S_REL_ERR) |
| 890 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN REL ACK but state %s\n", |
| 891 | gsm_lchan_name(lchan), |
| 892 | gsm_lchans_name(lchan->state)); |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 893 | |
Neels Hofmeyr | 10b0f1d | 2016-06-14 13:12:00 +0200 | [diff] [blame] | 894 | do_lchan_free(lchan); |
| 895 | |
Neels Hofmeyr | 01cb40d | 2016-06-23 22:44:20 +0200 | [diff] [blame] | 896 | /* |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 897 | * Check Osmocom RSL CHAN ACT style dynamic TCH/F_TCH/H_PDCH TS for pending |
| 898 | * transitions in these cases: |
| 899 | * |
| 900 | * a) after PDCH was released due to switchover request, activate TCH. |
| 901 | * BSC initiated this switchover, so dyn.pchan_is != pchan_want and |
| 902 | * lchan->type has been set to the desired GSM_LCHAN_*. |
| 903 | * |
| 904 | * b) Voice call ended and a TCH is released. If the TS is now unused, |
| 905 | * switch to PDCH. Here still dyn.pchan_is == dyn.pchan_want because |
| 906 | * we're only just notified and may decide to switch to PDCH now. |
| 907 | */ |
| 908 | if (ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH) { |
| 909 | DEBUGP(DRSL, "%s Rx RSL Channel Release ack for lchan %u\n", |
| 910 | gsm_ts_and_pchan_name(ts), lchan->nr); |
| 911 | |
| 912 | /* (a) */ |
| 913 | if (ts->dyn.pchan_is != ts->dyn.pchan_want) |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 914 | return dyn_ts_switchover_continue(ts); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 915 | |
| 916 | /* (b) */ |
Neels Hofmeyr | 4c13663 | 2016-08-24 14:44:11 +0200 | [diff] [blame] | 917 | if (dyn_ts_should_switch_to_pdch(ts)) |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 918 | return dyn_ts_switchover_start(ts, GSM_PCHAN_PDCH); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 919 | } |
| 920 | |
| 921 | /* |
Neels Hofmeyr | 01cb40d | 2016-06-23 22:44:20 +0200 | [diff] [blame] | 922 | * Put a dynamic TCH/F_PDCH channel back to PDCH mode iff it was |
| 923 | * released successfully. If in error, the PDCH ACT will follow after |
| 924 | * T3111 in error_timeout_cb(). |
| 925 | * |
| 926 | * Any state other than LCHAN_S_REL_ERR became LCHAN_S_NONE after above |
| 927 | * do_lchan_free(). Assert this, because that's what ensures a PDCH ACT |
Neels Hofmeyr | b3985cf | 2016-07-14 02:51:13 +0200 | [diff] [blame] | 928 | * on a TCH/F_PDCH TS in all cases. |
Neels Hofmeyr | 31b2630 | 2016-07-06 14:39:04 +0200 | [diff] [blame] | 929 | * |
| 930 | * If GPRS is disabled, always skip the PDCH ACT. |
Neels Hofmeyr | 01cb40d | 2016-06-23 22:44:20 +0200 | [diff] [blame] | 931 | */ |
| 932 | OSMO_ASSERT(lchan->state == LCHAN_S_NONE |
| 933 | || lchan->state == LCHAN_S_REL_ERR); |
Neels Hofmeyr | aff130f | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 934 | if (ts->trx->bts->gprs.mode == BTS_GPRS_NONE) |
Neels Hofmeyr | 31b2630 | 2016-07-06 14:39:04 +0200 | [diff] [blame] | 935 | return 0; |
Neels Hofmeyr | aff130f | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 936 | if (ts->pchan == GSM_PCHAN_TCH_F_PDCH |
Neels Hofmeyr | ff1d734 | 2016-06-21 20:55:14 +0200 | [diff] [blame] | 937 | && lchan->state == LCHAN_S_NONE) |
Neels Hofmeyr | aff130f | 2016-07-23 20:01:49 +0200 | [diff] [blame] | 938 | return rsl_ipacc_pdch_activate(ts, 1); |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 939 | return 0; |
| 940 | } |
| 941 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 942 | int rsl_paging_cmd(struct gsm_bts *bts, uint8_t paging_group, uint8_t len, |
| 943 | uint8_t *ms_ident, uint8_t chan_needed) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 944 | { |
| 945 | struct abis_rsl_dchan_hdr *dh; |
| 946 | struct msgb *msg = rsl_msgb_alloc(); |
| 947 | |
| 948 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 949 | init_dchan_hdr(dh, RSL_MT_PAGING_CMD); |
| 950 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 951 | |
| 952 | msgb_tv_put(msg, RSL_IE_PAGING_GROUP, paging_group); |
| 953 | msgb_tlv_put(msg, RSL_IE_MS_IDENTITY, len-2, ms_ident+2); |
| 954 | msgb_tv_put(msg, RSL_IE_CHAN_NEEDED, chan_needed); |
| 955 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 956 | msg->dst = bts->c0->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 957 | |
| 958 | return abis_rsl_sendmsg(msg); |
| 959 | } |
| 960 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 961 | int imsi_str2bcd(uint8_t *bcd_out, const char *str_in) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 962 | { |
| 963 | int i, len = strlen(str_in); |
| 964 | |
| 965 | for (i = 0; i < len; i++) { |
| 966 | int num = str_in[i] - 0x30; |
| 967 | if (num < 0 || num > 9) |
| 968 | return -1; |
| 969 | if (i % 2 == 0) |
| 970 | bcd_out[i/2] = num; |
| 971 | else |
| 972 | bcd_out[i/2] |= (num << 4); |
| 973 | } |
| 974 | |
| 975 | return 0; |
| 976 | } |
| 977 | |
| 978 | /* Chapter 8.5.6 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 979 | int rsl_imm_assign_cmd(struct gsm_bts *bts, uint8_t len, uint8_t *val) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 980 | { |
| 981 | struct msgb *msg = rsl_msgb_alloc(); |
| 982 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 983 | uint8_t buf[MACBLOCK_SIZE]; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 984 | |
| 985 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 986 | init_dchan_hdr(dh, RSL_MT_IMMEDIATE_ASSIGN_CMD); |
| 987 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 988 | |
| 989 | switch (bts->type) { |
| 990 | case GSM_BTS_TYPE_BS11: |
| 991 | msgb_tlv_put(msg, RSL_IE_IMM_ASS_INFO, len, val); |
| 992 | break; |
| 993 | default: |
| 994 | /* If phase 2, construct a FULL_IMM_ASS_INFO */ |
| 995 | pad_macblock(buf, val, len); |
| 996 | msgb_tlv_put(msg, RSL_IE_FULL_IMM_ASS_INFO, MACBLOCK_SIZE, buf); |
| 997 | break; |
| 998 | } |
| 999 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1000 | msg->dst = bts->c0->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1001 | |
| 1002 | return abis_rsl_sendmsg(msg); |
| 1003 | } |
| 1004 | |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 1005 | /* Send Siemens specific MS RF Power Capability Indication */ |
Harald Welte | 1209075 | 2009-08-10 10:07:33 +0200 | [diff] [blame] | 1006 | int rsl_siemens_mrpci(struct gsm_lchan *lchan, struct rsl_mrpci *mrpci) |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 1007 | { |
| 1008 | struct msgb *msg = rsl_msgb_alloc(); |
| 1009 | struct abis_rsl_dchan_hdr *dh; |
| 1010 | |
| 1011 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 1012 | init_dchan_hdr(dh, RSL_MT_SIEMENS_MRPCI); |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 1013 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1014 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1015 | msgb_tv_put(msg, RSL_IE_SIEMENS_MRPCI, *(uint8_t *)mrpci); |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 1016 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1017 | DEBUGP(DRSL, "%s TX Siemens MRPCI 0x%02x\n", |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1018 | gsm_lchan_name(lchan), *(uint8_t *)mrpci); |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 1019 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1020 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 1021 | |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 1022 | return abis_rsl_sendmsg(msg); |
| 1023 | } |
| 1024 | |
| 1025 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1026 | /* Send "DATA REQUEST" message with given L3 Info payload */ |
| 1027 | /* Chapter 8.3.1 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1028 | int rsl_data_request(struct msgb *msg, uint8_t link_id) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1029 | { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1030 | if (msg->lchan == NULL) { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1031 | LOGP(DRSL, LOGL_ERROR, "cannot send DATA REQUEST to unknown lchan\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1032 | return -EINVAL; |
| 1033 | } |
| 1034 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1035 | rsl_rll_push_l3(msg, RSL_MT_DATA_REQ, gsm_lchan2chan_nr(msg->lchan), |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1036 | link_id, 1); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1037 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1038 | msg->dst = msg->lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1039 | |
| 1040 | return abis_rsl_sendmsg(msg); |
| 1041 | } |
| 1042 | |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1043 | /* Send "ESTABLISH REQUEST" message with given L3 Info payload */ |
| 1044 | /* Chapter 8.3.1 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1045 | int rsl_establish_request(struct gsm_lchan *lchan, uint8_t link_id) |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1046 | { |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1047 | struct msgb *msg; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1048 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1049 | msg = rsl_rll_simple(RSL_MT_EST_REQ, gsm_lchan2chan_nr(lchan), |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1050 | link_id, 0); |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1051 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1052 | |
Harald Welte | 17091bd | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 1053 | DEBUGP(DRLL, "%s RSL RLL ESTABLISH REQ (link_id=0x%02x)\n", |
| 1054 | gsm_lchan_name(lchan), link_id); |
| 1055 | |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1056 | return abis_rsl_sendmsg(msg); |
| 1057 | } |
| 1058 | |
Andreas Eversberg | ac27b95 | 2013-12-05 13:25:06 +0100 | [diff] [blame] | 1059 | static void rsl_handle_release(struct gsm_lchan *lchan); |
| 1060 | |
| 1061 | /* Special work handler to handle missing RSL_MT_REL_CONF message from |
| 1062 | * Nokia InSite BTS */ |
| 1063 | static void lchan_rel_work_cb(void *data) |
| 1064 | { |
| 1065 | struct gsm_lchan *lchan = data; |
| 1066 | int sapi; |
| 1067 | |
| 1068 | for (sapi = 0; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 1069 | if (lchan->sapis[sapi] == LCHAN_SAPI_REL) |
| 1070 | lchan->sapis[sapi] = LCHAN_SAPI_UNUSED; |
| 1071 | } |
| 1072 | rsl_handle_release(lchan); |
| 1073 | } |
| 1074 | |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1075 | /* Chapter 8.3.7 Request the release of multiframe mode of RLL connection. |
| 1076 | This is what higher layers should call. The BTS then responds with |
| 1077 | RELEASE CONFIRM, which we in turn use to trigger RSL CHANNEL RELEASE, |
| 1078 | which in turn is acknowledged by RSL CHANNEL RELEASE ACK, which calls |
| 1079 | lchan_free() */ |
Holger Hans Peter Freyther | 2806c79 | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 1080 | int rsl_release_request(struct gsm_lchan *lchan, uint8_t link_id, |
| 1081 | enum rsl_rel_mode release_mode) |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1082 | { |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1083 | |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1084 | struct msgb *msg; |
| 1085 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1086 | msg = rsl_rll_simple(RSL_MT_REL_REQ, gsm_lchan2chan_nr(lchan), |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 1087 | link_id, 0); |
Holger Hans Peter Freyther | bcea9a7 | 2010-06-08 11:57:45 +0800 | [diff] [blame] | 1088 | /* 0 is normal release, 1 is local end */ |
Holger Hans Peter Freyther | 2806c79 | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 1089 | msgb_tv_put(msg, RSL_IE_RELEASE_MODE, release_mode); |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1090 | |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1091 | /* FIXME: start some timer in case we don't receive a REL ACK ? */ |
| 1092 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1093 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1094 | |
Harald Welte | 17091bd | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 1095 | DEBUGP(DRLL, "%s RSL RLL RELEASE REQ (link_id=0x%02x, reason=%u)\n", |
Holger Hans Peter Freyther | 2806c79 | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 1096 | gsm_lchan_name(lchan), link_id, release_mode); |
Harald Welte | 17091bd | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 1097 | |
Andreas Eversberg | ac27b95 | 2013-12-05 13:25:06 +0100 | [diff] [blame] | 1098 | abis_rsl_sendmsg(msg); |
| 1099 | |
| 1100 | /* Do not wait for Nokia BTS to send the confirm. */ |
| 1101 | if (is_nokia_bts(lchan->ts->trx->bts) |
| 1102 | && lchan->ts->trx->bts->nokia.no_loc_rel_cnf |
| 1103 | && release_mode == RSL_REL_LOCAL_END) { |
| 1104 | DEBUGP(DRLL, "Scheduling release, becasuse Nokia InSite BTS does not send a RELease CONFirm.\n"); |
| 1105 | lchan->sapis[link_id & 0x7] = LCHAN_SAPI_REL; |
| 1106 | lchan->rel_work.cb = lchan_rel_work_cb; |
| 1107 | lchan->rel_work.data = lchan; |
| 1108 | osmo_timer_schedule(&lchan->rel_work, 0, 0); |
| 1109 | } |
| 1110 | |
| 1111 | return 0; |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1112 | } |
| 1113 | |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1114 | int rsl_lchan_mark_broken(struct gsm_lchan *lchan, const char *reason) |
| 1115 | { |
Neels Hofmeyr | 0323f35 | 2016-08-24 16:48:00 +0200 | [diff] [blame] | 1116 | LOGP(DRSL, LOGL_ERROR, "%s %s lchan broken: %s\n", |
| 1117 | gsm_lchan_name(lchan), gsm_lchant_name(lchan->type), reason); |
| 1118 | rsl_lchan_set_state(lchan, LCHAN_S_BROKEN); |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1119 | lchan->broken_reason = reason; |
| 1120 | return 0; |
| 1121 | } |
| 1122 | |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 1123 | int rsl_lchan_set_state(struct gsm_lchan *lchan, int state) |
| 1124 | { |
Neels Hofmeyr | a4353c8 | 2016-06-21 21:34:46 +0200 | [diff] [blame] | 1125 | DEBUGP(DRSL, "%s state %s -> %s\n", |
| 1126 | gsm_lchan_name(lchan), gsm_lchans_name(lchan->state), |
| 1127 | gsm_lchans_name(state)); |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 1128 | lchan->state = state; |
| 1129 | return 0; |
| 1130 | } |
| 1131 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1132 | /* Chapter 8.4.2: Channel Activate Acknowledge */ |
| 1133 | static int rsl_rx_chan_act_ack(struct msgb *msg) |
| 1134 | { |
| 1135 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1136 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1137 | |
| 1138 | /* BTS has confirmed channel activation, we now need |
| 1139 | * to assign the activated channel to the MS */ |
| 1140 | if (rslh->ie_chan != RSL_IE_CHAN_NR) |
| 1141 | return -EINVAL; |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1142 | |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1143 | osmo_timer_del(&lchan->act_timer); |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 1144 | |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1145 | if (lchan->state == LCHAN_S_BROKEN) { |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 1146 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK for broken channel.\n", |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1147 | gsm_lchan_name(lchan)); |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 1148 | return 0; |
| 1149 | } |
| 1150 | |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1151 | if (lchan->state != LCHAN_S_ACT_REQ) |
Harald Welte | ab2534c | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1152 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK, but state %s\n", |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1153 | gsm_lchan_name(lchan), |
| 1154 | gsm_lchans_name(lchan->state)); |
| 1155 | rsl_lchan_set_state(lchan, LCHAN_S_ACTIVE); |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1156 | |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 1157 | if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH) |
| 1158 | dyn_ts_switchover_complete(lchan); |
| 1159 | |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1160 | if (lchan->rqd_ref) { |
| 1161 | rsl_send_imm_assignment(lchan); |
| 1162 | talloc_free(lchan->rqd_ref); |
| 1163 | lchan->rqd_ref = NULL; |
| 1164 | lchan->rqd_ta = 0; |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1165 | } |
| 1166 | |
Neels Hofmeyr | dc99740 | 2016-07-14 16:16:33 +0200 | [diff] [blame] | 1167 | send_lchan_signal(S_LCHAN_ACTIVATE_ACK, lchan, NULL); |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1168 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1169 | return 0; |
| 1170 | } |
| 1171 | |
| 1172 | /* Chapter 8.4.3: Channel Activate NACK */ |
| 1173 | static int rsl_rx_chan_act_nack(struct msgb *msg) |
| 1174 | { |
| 1175 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1176 | struct tlv_parsed tp; |
| 1177 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 1178 | osmo_timer_del(&msg->lchan->act_timer); |
| 1179 | |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 1180 | if (msg->lchan->state == LCHAN_S_BROKEN) { |
| 1181 | LOGP(DRSL, LOGL_ERROR, |
| 1182 | "%s CHANNEL ACTIVATE NACK for broken channel.\n", |
| 1183 | gsm_lchan_name(msg->lchan)); |
| 1184 | return -1; |
| 1185 | } |
| 1186 | |
Daniel Willmann | 9e9d44c | 2011-08-11 04:54:23 +0200 | [diff] [blame] | 1187 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL ACTIVATE NACK ", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1188 | gsm_lchan_name(msg->lchan)); |
Harald Welte (local) | ed6d762 | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 1189 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1190 | /* BTS has rejected channel activation ?!? */ |
| 1191 | if (dh->ie_chan != RSL_IE_CHAN_NR) |
| 1192 | return -EINVAL; |
| 1193 | |
| 1194 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1195 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1196 | const uint8_t *cause = TLVP_VAL(&tp, RSL_IE_CAUSE); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1197 | print_rsl_cause(LOGL_ERROR, cause, |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1198 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
Holger Hans Peter Freyther | 5149c17 | 2012-12-06 19:25:06 +0100 | [diff] [blame] | 1199 | msg->lchan->error_cause = *cause; |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1200 | if (*cause != RSL_ERR_RCH_ALR_ACTV_ALLOC) { |
| 1201 | rsl_lchan_mark_broken(msg->lchan, "NACK on activation"); |
| 1202 | } else |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1203 | rsl_rf_chan_release(msg->lchan, 1, SACCH_DEACTIVATE); |
Daniel Willmann | 245ee03 | 2011-08-11 04:47:11 +0200 | [diff] [blame] | 1204 | |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1205 | } else { |
| 1206 | rsl_lchan_mark_broken(msg->lchan, "NACK on activation no IE"); |
| 1207 | } |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1208 | |
Harald Welte (local) | ed6d762 | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 1209 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
| 1210 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1211 | send_lchan_signal(S_LCHAN_ACTIVATE_NACK, msg->lchan, NULL); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1212 | return 0; |
| 1213 | } |
| 1214 | |
| 1215 | /* Chapter 8.4.4: Connection Failure Indication */ |
| 1216 | static int rsl_rx_conn_fail(struct msgb *msg) |
| 1217 | { |
| 1218 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1219 | struct tlv_parsed tp; |
| 1220 | |
Holger Hans Peter Freyther | de4da29 | 2014-04-19 16:45:36 +0200 | [diff] [blame] | 1221 | LOGP(DRSL, LOGL_NOTICE, "%s CONNECTION FAIL: RELEASING state %s ", |
| 1222 | gsm_lchan_name(msg->lchan), |
| 1223 | gsm_lchans_name(msg->lchan->state)); |
| 1224 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1225 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1226 | |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1227 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1228 | print_rsl_cause(LOGL_NOTICE, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1229 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1230 | |
Harald Welte (local) | 4bd7664 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 1231 | LOGPC(DRSL, LOGL_NOTICE, "\n"); |
Alexander Couzens | d8aad3a | 2016-08-02 11:34:11 +0200 | [diff] [blame] | 1232 | rate_ctr_inc(&msg->lchan->ts->trx->bts->network->bsc_ctrs->ctr[BSC_CTR_CHAN_RF_FAIL]); |
Holger Hans Peter Freyther | 29eb19b | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 1233 | return rsl_rf_chan_release_err(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1234 | } |
| 1235 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1236 | static void print_meas_rep_uni(struct gsm_meas_rep_unidir *mru, |
| 1237 | const char *prefix) |
| 1238 | { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1239 | DEBUGPC(DMEAS, "RXL-FULL-%s=%3ddBm RXL-SUB-%s=%3ddBm ", |
| 1240 | prefix, rxlev2dbm(mru->full.rx_lev), |
| 1241 | prefix, rxlev2dbm(mru->sub.rx_lev)); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1242 | DEBUGPC(DMEAS, "RXQ-FULL-%s=%d RXQ-SUB-%s=%d ", |
| 1243 | prefix, mru->full.rx_qual, prefix, mru->sub.rx_qual); |
| 1244 | } |
| 1245 | |
Harald Welte | 50290cc | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1246 | static void print_meas_rep(struct gsm_lchan *lchan, struct gsm_meas_rep *mr) |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1247 | { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1248 | int i; |
Harald Welte | 50290cc | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1249 | char *name = ""; |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1250 | |
Harald Welte | b764f1c | 2015-12-28 14:04:36 +0100 | [diff] [blame] | 1251 | if (lchan && lchan->conn) |
Harald Welte | 50290cc | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1252 | name = subscr_name(lchan->conn->subscr); |
| 1253 | |
| 1254 | DEBUGP(DMEAS, "[%s] MEASUREMENT RESULT NR=%d ", name, mr->nr); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1255 | |
| 1256 | if (mr->flags & MEAS_REP_F_DL_DTX) |
| 1257 | DEBUGPC(DMEAS, "DTXd "); |
| 1258 | |
| 1259 | print_meas_rep_uni(&mr->ul, "ul"); |
| 1260 | DEBUGPC(DMEAS, "BS_POWER=%d ", mr->bs_power); |
| 1261 | if (mr->flags & MEAS_REP_F_MS_TO) |
| 1262 | DEBUGPC(DMEAS, "MS_TO=%d ", mr->ms_timing_offset); |
| 1263 | |
| 1264 | if (mr->flags & MEAS_REP_F_MS_L1) { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1265 | DEBUGPC(DMEAS, "L1_MS_PWR=%3ddBm ", mr->ms_l1.pwr); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1266 | DEBUGPC(DMEAS, "L1_FPC=%u ", |
| 1267 | mr->flags & MEAS_REP_F_FPC ? 1 : 0); |
| 1268 | DEBUGPC(DMEAS, "L1_TA=%u ", mr->ms_l1.ta); |
| 1269 | } |
| 1270 | |
| 1271 | if (mr->flags & MEAS_REP_F_UL_DTX) |
| 1272 | DEBUGPC(DMEAS, "DTXu "); |
| 1273 | if (mr->flags & MEAS_REP_F_BA1) |
| 1274 | DEBUGPC(DMEAS, "BA1 "); |
| 1275 | if (!(mr->flags & MEAS_REP_F_DL_VALID)) |
| 1276 | DEBUGPC(DMEAS, "NOT VALID "); |
| 1277 | else |
| 1278 | print_meas_rep_uni(&mr->dl, "dl"); |
| 1279 | |
| 1280 | DEBUGPC(DMEAS, "NUM_NEIGH=%u\n", mr->num_cell); |
Harald Welte | 0b833f8 | 2009-12-19 18:33:05 +0100 | [diff] [blame] | 1281 | if (mr->num_cell == 7) |
| 1282 | return; |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1283 | for (i = 0; i < mr->num_cell; i++) { |
| 1284 | struct gsm_meas_rep_cell *mrc = &mr->cell[i]; |
Harald Welte | 350c2d3 | 2009-12-25 23:02:22 +0100 | [diff] [blame] | 1285 | DEBUGP(DMEAS, "IDX=%u ARFCN=%u BSIC=%u => %d dBm\n", |
| 1286 | mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev)); |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1287 | } |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1288 | } |
| 1289 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1290 | static int rsl_rx_meas_res(struct msgb *msg) |
| 1291 | { |
| 1292 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1293 | struct tlv_parsed tp; |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1294 | struct gsm_meas_rep *mr = lchan_next_meas_rep(msg->lchan); |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1295 | uint8_t len; |
| 1296 | const uint8_t *val; |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1297 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1298 | |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1299 | /* check if this channel is actually active */ |
| 1300 | /* FIXME: maybe this check should be way more generic/centralized */ |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1301 | if (msg->lchan->state != LCHAN_S_ACTIVE) { |
Holger Hans Peter Freyther | 67a2e29 | 2010-07-29 14:50:57 +0800 | [diff] [blame] | 1302 | LOGP(DRSL, LOGL_DEBUG, "%s: MEAS RES for inactive channel\n", |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1303 | gsm_lchan_name(msg->lchan)); |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1304 | return 0; |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1305 | } |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1306 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1307 | memset(mr, 0, sizeof(*mr)); |
Harald Welte | aa0efa1 | 2009-12-16 23:29:34 +0100 | [diff] [blame] | 1308 | mr->lchan = msg->lchan; |
Harald Welte | 4efcc54 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 1309 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1310 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1311 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1312 | if (!TLVP_PRESENT(&tp, RSL_IE_MEAS_RES_NR) || |
| 1313 | !TLVP_PRESENT(&tp, RSL_IE_UPLINK_MEAS) || |
| 1314 | !TLVP_PRESENT(&tp, RSL_IE_BS_POWER)) |
| 1315 | return -EIO; |
| 1316 | |
| 1317 | /* Mandatory Parts */ |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1318 | mr->nr = *TLVP_VAL(&tp, RSL_IE_MEAS_RES_NR); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1319 | |
| 1320 | len = TLVP_LEN(&tp, RSL_IE_UPLINK_MEAS); |
| 1321 | val = TLVP_VAL(&tp, RSL_IE_UPLINK_MEAS); |
| 1322 | if (len >= 3) { |
| 1323 | if (val[0] & 0x40) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1324 | mr->flags |= MEAS_REP_F_DL_DTX; |
| 1325 | mr->ul.full.rx_lev = val[0] & 0x3f; |
| 1326 | mr->ul.sub.rx_lev = val[1] & 0x3f; |
| 1327 | mr->ul.full.rx_qual = val[2]>>3 & 0x7; |
| 1328 | mr->ul.sub.rx_qual = val[2] & 0x7; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1329 | } |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1330 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1331 | mr->bs_power = *TLVP_VAL(&tp, RSL_IE_BS_POWER); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1332 | |
| 1333 | /* Optional Parts */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1334 | if (TLVP_PRESENT(&tp, RSL_IE_MS_TIMING_OFFSET)) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1335 | mr->ms_timing_offset = |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1336 | *TLVP_VAL(&tp, RSL_IE_MS_TIMING_OFFSET); |
| 1337 | |
Harald Welte | a1467eb | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 1338 | if (TLVP_PRESENT(&tp, RSL_IE_L1_INFO)) { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1339 | struct e1inp_sign_link *sign_link = msg->dst; |
| 1340 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1341 | val = TLVP_VAL(&tp, RSL_IE_L1_INFO); |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1342 | mr->flags |= MEAS_REP_F_MS_L1; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1343 | mr->ms_l1.pwr = ms_pwr_dbm(sign_link->trx->bts->band, val[0] >> 3); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1344 | if (val[0] & 0x04) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1345 | mr->flags |= MEAS_REP_F_FPC; |
| 1346 | mr->ms_l1.ta = val[1]; |
Andreas Eversberg | fe56cf8 | 2011-12-24 11:49:05 +0100 | [diff] [blame] | 1347 | /* BS11 and Nokia reports TA shifted by 2 bits */ |
| 1348 | if (msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_BS11 |
| 1349 | || msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_NOKIA_SITE) |
Andreas Eversberg | 0f18e5e | 2011-12-16 17:45:37 +0100 | [diff] [blame] | 1350 | mr->ms_l1.ta >>= 2; |
Harald Welte | a1467eb | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 1351 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1352 | if (TLVP_PRESENT(&tp, RSL_IE_L3_INFO)) { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1353 | msg->l3h = (uint8_t *) TLVP_VAL(&tp, RSL_IE_L3_INFO); |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1354 | rc = gsm48_parse_meas_rep(mr, msg); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1355 | if (rc < 0) |
| 1356 | return rc; |
| 1357 | } |
| 1358 | |
Harald Welte | 50290cc | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1359 | print_meas_rep(msg->lchan, mr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1360 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1361 | send_lchan_signal(S_LCHAN_MEAS_REP, msg->lchan, mr); |
Harald Welte | 4efcc54 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 1362 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1363 | return 0; |
| 1364 | } |
| 1365 | |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1366 | /* Chapter 8.4.7 */ |
| 1367 | static int rsl_rx_hando_det(struct msgb *msg) |
| 1368 | { |
| 1369 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1370 | struct tlv_parsed tp; |
| 1371 | |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1372 | DEBUGP(DRSL, "%s HANDOVER DETECT ", gsm_lchan_name(msg->lchan)); |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1373 | |
| 1374 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1375 | |
| 1376 | if (TLVP_PRESENT(&tp, RSL_IE_ACCESS_DELAY)) |
| 1377 | DEBUGPC(DRSL, "access delay = %u\n", |
| 1378 | *TLVP_VAL(&tp, RSL_IE_ACCESS_DELAY)); |
| 1379 | else |
| 1380 | DEBUGPC(DRSL, "\n"); |
| 1381 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1382 | send_lchan_signal(S_LCHAN_HANDOVER_DETECT, msg->lchan, NULL); |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1383 | |
| 1384 | return 0; |
| 1385 | } |
| 1386 | |
Neels Hofmeyr | 6297b74 | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1387 | static bool lchan_may_change_pdch(struct gsm_lchan *lchan, bool pdch_act) |
| 1388 | { |
| 1389 | struct gsm_bts_trx_ts *ts; |
Neels Hofmeyr | 6297b74 | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1390 | |
| 1391 | OSMO_ASSERT(lchan); |
| 1392 | |
| 1393 | ts = lchan->ts; |
| 1394 | OSMO_ASSERT(ts); |
| 1395 | OSMO_ASSERT(ts->trx); |
| 1396 | OSMO_ASSERT(ts->trx->bts); |
| 1397 | |
| 1398 | if (lchan->ts->pchan != GSM_PCHAN_TCH_F_PDCH) { |
Neels Hofmeyr | 50c2bd4 | 2016-06-21 20:53:27 +0200 | [diff] [blame] | 1399 | LOGP(DRSL, LOGL_ERROR, "%s pchan=%s Rx PDCH %s ACK" |
| 1400 | " for channel that is no TCH/F_PDCH\n", |
| 1401 | gsm_lchan_name(lchan), |
Neels Hofmeyr | 6297b74 | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1402 | gsm_pchan_name(ts->pchan), |
| 1403 | pdch_act? "ACT" : "DEACT"); |
| 1404 | return false; |
| 1405 | } |
| 1406 | |
Neels Hofmeyr | 10b0f1d | 2016-06-14 13:12:00 +0200 | [diff] [blame] | 1407 | if (lchan->state != LCHAN_S_NONE) { |
Neels Hofmeyr | 50c2bd4 | 2016-06-21 20:53:27 +0200 | [diff] [blame] | 1408 | LOGP(DRSL, LOGL_ERROR, "%s pchan=%s Rx PDCH %s ACK" |
| 1409 | " in unexpected state: %s\n", |
| 1410 | gsm_lchan_name(lchan), |
Neels Hofmeyr | 6297b74 | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1411 | gsm_pchan_name(ts->pchan), |
| 1412 | pdch_act? "ACT" : "DEACT", |
| 1413 | gsm_lchans_name(lchan->state)); |
| 1414 | return false; |
| 1415 | } |
| 1416 | return true; |
| 1417 | } |
| 1418 | |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1419 | static int rsl_rx_pdch_act_ack(struct msgb *msg) |
| 1420 | { |
Neels Hofmeyr | 6297b74 | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1421 | if (!lchan_may_change_pdch(msg->lchan, true)) |
| 1422 | return -EINVAL; |
| 1423 | |
Neels Hofmeyr | 5a3c23c | 2016-06-14 14:08:35 +0200 | [diff] [blame] | 1424 | msg->lchan->ts->flags |= TS_F_PDCH_ACTIVE; |
Neels Hofmeyr | 1d9a3aa | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 1425 | msg->lchan->ts->flags &= ~TS_F_PDCH_ACT_PENDING; |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1426 | |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1427 | return 0; |
| 1428 | } |
| 1429 | |
| 1430 | static int rsl_rx_pdch_deact_ack(struct msgb *msg) |
| 1431 | { |
Neels Hofmeyr | 6297b74 | 2016-06-13 12:28:21 +0200 | [diff] [blame] | 1432 | if (!lchan_may_change_pdch(msg->lchan, false)) |
| 1433 | return -EINVAL; |
| 1434 | |
Neels Hofmeyr | 5a3c23c | 2016-06-14 14:08:35 +0200 | [diff] [blame] | 1435 | msg->lchan->ts->flags &= ~TS_F_PDCH_ACTIVE; |
Neels Hofmeyr | 1d9a3aa | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 1436 | msg->lchan->ts->flags &= ~TS_F_PDCH_DEACT_PENDING; |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1437 | |
Neels Hofmeyr | 3c0df95 | 2016-07-23 21:00:51 +0200 | [diff] [blame] | 1438 | rsl_chan_activate_lchan(msg->lchan, msg->lchan->dyn.act_type, |
| 1439 | msg->lchan->dyn.ho_ref); |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1440 | |
| 1441 | return 0; |
| 1442 | } |
| 1443 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1444 | static int abis_rsl_rx_dchan(struct msgb *msg) |
| 1445 | { |
| 1446 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1447 | int rc = 0; |
| 1448 | char *ts_name; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1449 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1450 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1451 | msg->lchan = lchan_lookup(sign_link->trx, rslh->chan_nr); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1452 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1453 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1454 | switch (rslh->c.msg_type) { |
| 1455 | case RSL_MT_CHAN_ACTIV_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1456 | DEBUGP(DRSL, "%s CHANNEL ACTIVATE ACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1457 | rc = rsl_rx_chan_act_ack(msg); |
| 1458 | break; |
| 1459 | case RSL_MT_CHAN_ACTIV_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1460 | rc = rsl_rx_chan_act_nack(msg); |
| 1461 | break; |
| 1462 | case RSL_MT_CONN_FAIL: |
| 1463 | rc = rsl_rx_conn_fail(msg); |
| 1464 | break; |
| 1465 | case RSL_MT_MEAS_RES: |
| 1466 | rc = rsl_rx_meas_res(msg); |
| 1467 | break; |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1468 | case RSL_MT_HANDO_DET: |
| 1469 | rc = rsl_rx_hando_det(msg); |
| 1470 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1471 | case RSL_MT_RF_CHAN_REL_ACK: |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 1472 | rc = rsl_rx_rf_chan_rel_ack(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1473 | break; |
| 1474 | case RSL_MT_MODE_MODIFY_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1475 | DEBUGP(DRSL, "%s CHANNEL MODE MODIFY ACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1476 | break; |
| 1477 | case RSL_MT_MODE_MODIFY_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1478 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL MODE MODIFY NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1479 | break; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1480 | case RSL_MT_IPAC_PDCH_ACT_ACK: |
Neels Hofmeyr | 6b27230 | 2016-05-31 17:51:41 +0200 | [diff] [blame] | 1481 | DEBUGP(DRSL, "%s IPAC PDCH ACT ACK\n", ts_name); |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1482 | rc = rsl_rx_pdch_act_ack(msg); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1483 | break; |
| 1484 | case RSL_MT_IPAC_PDCH_ACT_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1485 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH ACT NACK\n", ts_name); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1486 | break; |
| 1487 | case RSL_MT_IPAC_PDCH_DEACT_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1488 | DEBUGP(DRSL, "%s IPAC PDCH DEACT ACK\n", ts_name); |
Andreas Eversberg | 37c3a61 | 2013-10-11 13:32:30 +0200 | [diff] [blame] | 1489 | rc = rsl_rx_pdch_deact_ack(msg); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1490 | break; |
| 1491 | case RSL_MT_IPAC_PDCH_DEACT_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1492 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH DEACT NACK\n", ts_name); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1493 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1494 | case RSL_MT_PHY_CONTEXT_CONF: |
| 1495 | case RSL_MT_PREPROC_MEAS_RES: |
| 1496 | case RSL_MT_TALKER_DET: |
| 1497 | case RSL_MT_LISTENER_DET: |
| 1498 | case RSL_MT_REMOTE_CODEC_CONF_REP: |
| 1499 | case RSL_MT_MR_CODEC_MOD_ACK: |
| 1500 | case RSL_MT_MR_CODEC_MOD_NACK: |
| 1501 | case RSL_MT_MR_CODEC_MOD_PER: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1502 | LOGP(DRSL, LOGL_NOTICE, "%s Unimplemented Abis RSL DChan " |
| 1503 | "msg 0x%02x\n", ts_name, rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1504 | break; |
| 1505 | default: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1506 | LOGP(DRSL, LOGL_NOTICE, "%s unknown Abis RSL DChan msg 0x%02x\n", |
| 1507 | ts_name, rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1508 | return -EINVAL; |
| 1509 | } |
| 1510 | |
| 1511 | return rc; |
| 1512 | } |
| 1513 | |
| 1514 | static int rsl_rx_error_rep(struct msgb *msg) |
| 1515 | { |
| 1516 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1517 | struct tlv_parsed tp; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1518 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1519 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1520 | LOGP(DRSL, LOGL_ERROR, "%s ERROR REPORT ", gsm_trx_name(sign_link->trx)); |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1521 | |
| 1522 | rsl_tlv_parse(&tp, rslh->data, msgb_l2len(msg)-sizeof(*rslh)); |
| 1523 | |
| 1524 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1525 | print_rsl_cause(LOGL_ERROR, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1526 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1527 | |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1528 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1529 | |
| 1530 | return 0; |
| 1531 | } |
| 1532 | |
| 1533 | static int abis_rsl_rx_trx(struct msgb *msg) |
| 1534 | { |
| 1535 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1536 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1537 | int rc = 0; |
| 1538 | |
| 1539 | switch (rslh->msg_type) { |
| 1540 | case RSL_MT_ERROR_REPORT: |
| 1541 | rc = rsl_rx_error_rep(msg); |
| 1542 | break; |
| 1543 | case RSL_MT_RF_RES_IND: |
| 1544 | /* interference on idle channels of TRX */ |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1545 | //DEBUGP(DRSL, "%s RF Resource Indication\n", gsm_trx_name(sign_link->trx)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1546 | break; |
| 1547 | case RSL_MT_OVERLOAD: |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1548 | /* indicate CCCH / ACCH / processor overload */ |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1549 | LOGP(DRSL, LOGL_ERROR, "%s CCCH/ACCH/CPU Overload\n", |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1550 | gsm_trx_name(sign_link->trx)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1551 | break; |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 1552 | case 0x42: /* Nokia specific: SI End ACK */ |
| 1553 | LOGP(DRSL, LOGL_INFO, "Nokia SI End ACK\n"); |
| 1554 | break; |
| 1555 | case 0x43: /* Nokia specific: SI End NACK */ |
| 1556 | LOGP(DRSL, LOGL_INFO, "Nokia SI End NACK\n"); |
| 1557 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1558 | default: |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1559 | LOGP(DRSL, LOGL_NOTICE, "%s Unknown Abis RSL TRX message " |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1560 | "type 0x%02x\n", gsm_trx_name(sign_link->trx), rslh->msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1561 | return -EINVAL; |
| 1562 | } |
| 1563 | return rc; |
| 1564 | } |
| 1565 | |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1566 | /* If T3101 expires, we never received a response to IMMEDIATE ASSIGN */ |
| 1567 | static void t3101_expired(void *data) |
| 1568 | { |
| 1569 | struct gsm_lchan *lchan = data; |
| 1570 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1571 | rsl_rf_chan_release(lchan, 1, SACCH_DEACTIVATE); |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1572 | } |
| 1573 | |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1574 | /* If T3111 expires, we will send the RF Channel Request */ |
| 1575 | static void t3111_expired(void *data) |
| 1576 | { |
| 1577 | struct gsm_lchan *lchan = data; |
| 1578 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1579 | rsl_rf_chan_release(lchan, 0, SACCH_NONE); |
| 1580 | } |
| 1581 | |
| 1582 | /* If T3109 expires the MS has not send a UA/UM do the error release */ |
| 1583 | static void t3109_expired(void *data) |
| 1584 | { |
| 1585 | struct gsm_lchan *lchan = data; |
| 1586 | |
| 1587 | LOGP(DRSL, LOGL_ERROR, |
| 1588 | "%s SACCH deactivation timeout.\n", gsm_lchan_name(lchan)); |
| 1589 | rsl_rf_chan_release(lchan, 1, SACCH_NONE); |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1590 | } |
| 1591 | |
Harald Welte | a00fdd7 | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1592 | /* Format an IMM ASS REJ according to 04.08 Chapter 9.1.20 */ |
| 1593 | static int rsl_send_imm_ass_rej(struct gsm_bts *bts, |
| 1594 | unsigned int num_req_refs, |
| 1595 | struct gsm48_req_ref *rqd_refs, |
| 1596 | uint8_t wait_ind) |
| 1597 | { |
| 1598 | uint8_t buf[GSM_MACBLOCK_LEN]; |
| 1599 | struct gsm48_imm_ass_rej *iar = (struct gsm48_imm_ass_rej *)buf; |
| 1600 | |
| 1601 | /* create IMMEDIATE ASSIGN REJECT 04.08 message */ |
| 1602 | memset(iar, 0, sizeof(*iar)); |
| 1603 | iar->proto_discr = GSM48_PDISC_RR; |
Andreas Eversberg | dee934a | 2013-02-07 11:51:16 +0100 | [diff] [blame] | 1604 | iar->msg_type = GSM48_MT_RR_IMM_ASS_REJ; |
Harald Welte | a00fdd7 | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1605 | iar->page_mode = GSM48_PM_SAME; |
| 1606 | |
| 1607 | memcpy(&iar->req_ref1, &rqd_refs[0], sizeof(iar->req_ref1)); |
| 1608 | iar->wait_ind1 = wait_ind; |
| 1609 | |
| 1610 | if (num_req_refs >= 2) |
| 1611 | memcpy(&iar->req_ref2, &rqd_refs[1], sizeof(iar->req_ref2)); |
| 1612 | else |
| 1613 | memcpy(&iar->req_ref2, &rqd_refs[0], sizeof(iar->req_ref2)); |
| 1614 | iar->wait_ind2 = wait_ind; |
| 1615 | |
| 1616 | if (num_req_refs >= 3) |
| 1617 | memcpy(&iar->req_ref3, &rqd_refs[2], sizeof(iar->req_ref3)); |
| 1618 | else |
| 1619 | memcpy(&iar->req_ref3, &rqd_refs[0], sizeof(iar->req_ref3)); |
| 1620 | iar->wait_ind3 = wait_ind; |
| 1621 | |
| 1622 | if (num_req_refs >= 4) |
| 1623 | memcpy(&iar->req_ref4, &rqd_refs[3], sizeof(iar->req_ref4)); |
| 1624 | else |
| 1625 | memcpy(&iar->req_ref4, &rqd_refs[0], sizeof(iar->req_ref4)); |
| 1626 | iar->wait_ind4 = wait_ind; |
| 1627 | |
Andreas Eversberg | dee934a | 2013-02-07 11:51:16 +0100 | [diff] [blame] | 1628 | /* we need to subtract 1 byte from sizeof(*iar) since ia includes the l2_plen field */ |
| 1629 | iar->l2_plen = GSM48_LEN2PLEN((sizeof(*iar)-1)); |
| 1630 | |
| 1631 | return rsl_imm_assign_cmd(bts, sizeof(*iar), (uint8_t *) iar); |
Harald Welte | a00fdd7 | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1632 | } |
| 1633 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1634 | /* MS has requested a channel on the RACH */ |
| 1635 | static int rsl_rx_chan_rqd(struct msgb *msg) |
| 1636 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1637 | struct e1inp_sign_link *sign_link = msg->dst; |
| 1638 | struct gsm_bts *bts = sign_link->trx->bts; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1639 | struct abis_rsl_dchan_hdr *rqd_hdr = msgb_l2(msg); |
| 1640 | struct gsm48_req_ref *rqd_ref; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1641 | enum gsm_chan_t lctype; |
| 1642 | enum gsm_chreq_reason_t chreq_reason; |
| 1643 | struct gsm_lchan *lchan; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1644 | uint8_t rqd_ta; |
Holger Hans Peter Freyther | db39203 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1645 | int is_lu; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1646 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1647 | uint16_t arfcn; |
Holger Hans Peter Freyther | efd75b5 | 2012-02-03 20:10:13 +0100 | [diff] [blame] | 1648 | uint8_t subch; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1649 | |
| 1650 | /* parse request reference to be used in immediate assign */ |
| 1651 | if (rqd_hdr->data[0] != RSL_IE_REQ_REFERENCE) |
| 1652 | return -EINVAL; |
| 1653 | |
| 1654 | rqd_ref = (struct gsm48_req_ref *) &rqd_hdr->data[1]; |
| 1655 | |
| 1656 | /* parse access delay and use as TA */ |
| 1657 | if (rqd_hdr->data[sizeof(struct gsm48_req_ref)+1] != RSL_IE_ACCESS_DELAY) |
| 1658 | return -EINVAL; |
| 1659 | rqd_ta = rqd_hdr->data[sizeof(struct gsm48_req_ref)+2]; |
| 1660 | |
| 1661 | /* determine channel type (SDCCH/TCH_F/TCH_H) based on |
| 1662 | * request reference RA */ |
Holger Hans Peter Freyther | f0f37f1 | 2010-09-06 09:36:02 +0800 | [diff] [blame] | 1663 | lctype = get_ctype_by_chreq(bts->network, rqd_ref->ra); |
| 1664 | chreq_reason = get_reason_by_chreq(rqd_ref->ra, bts->network->neci); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1665 | |
Alexander Couzens | d8aad3a | 2016-08-02 11:34:11 +0200 | [diff] [blame] | 1666 | rate_ctr_inc(&bts->network->bsc_ctrs->ctr[BSC_CTR_CHREQ_TOTAL]); |
Harald Welte | 3edc5a9 | 2009-12-22 00:41:05 +0100 | [diff] [blame] | 1667 | |
Holger Hans Peter Freyther | db39203 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1668 | /* |
| 1669 | * We want LOCATION UPDATES to succeed and will assign a TCH |
| 1670 | * if we have no SDCCH available. |
| 1671 | */ |
| 1672 | is_lu = !!(chreq_reason == GSM_CHREQ_REASON_LOCATION_UPD); |
| 1673 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1674 | /* check availability / allocate channel */ |
Holger Hans Peter Freyther | db39203 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1675 | lchan = lchan_alloc(bts, lctype, is_lu); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1676 | if (!lchan) { |
Harald Welte (local) | e0bb5fa | 2009-12-27 13:48:09 +0100 | [diff] [blame] | 1677 | LOGP(DRSL, LOGL_NOTICE, "BTS %d CHAN RQD: no resources for %s 0x%x\n", |
Harald Welte (local) | 02204d0 | 2009-12-27 18:05:25 +0100 | [diff] [blame] | 1678 | msg->lchan->ts->trx->bts->nr, gsm_lchant_name(lctype), rqd_ref->ra); |
Alexander Couzens | d8aad3a | 2016-08-02 11:34:11 +0200 | [diff] [blame] | 1679 | rate_ctr_inc(&bts->network->bsc_ctrs->ctr[BSC_CTR_CHREQ_NO_CHANNEL]); |
Harald Welte | a00fdd7 | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1680 | /* FIXME gather multiple CHAN RQD and reject up to 4 at the same time */ |
| 1681 | if (bts->network->T3122) |
| 1682 | rsl_send_imm_ass_rej(bts, 1, rqd_ref, bts->network->T3122 & 0xff); |
Harald Welte | cf7c90c | 2012-11-13 04:46:03 +0100 | [diff] [blame] | 1683 | return 0; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1684 | } |
| 1685 | |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 1686 | /* |
| 1687 | * Expecting lchan state to be NONE, except for dyn TS in PDCH mode. |
| 1688 | * Those are expected to be ACTIVE: the PDCH release will be sent from |
| 1689 | * rsl_chan_activate_lchan() below. |
| 1690 | */ |
| 1691 | if (lchan->state != LCHAN_S_NONE |
| 1692 | && !(lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH |
| 1693 | && lchan->ts->dyn.pchan_is == GSM_PCHAN_PDCH |
| 1694 | && lchan->state == LCHAN_S_ACTIVE)) |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1695 | LOGP(DRSL, LOGL_NOTICE, "%s lchan_alloc() returned channel " |
Harald Welte | ab2534c | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1696 | "in state %s\n", gsm_lchan_name(lchan), |
| 1697 | gsm_lchans_name(lchan->state)); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1698 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1699 | /* save the RACH data as we need it after the CHAN ACT ACK */ |
| 1700 | lchan->rqd_ref = talloc_zero(bts, struct gsm48_req_ref); |
| 1701 | if (!lchan->rqd_ref) { |
| 1702 | LOGP(DRSL, LOGL_ERROR, "Failed to allocate gsm48_req_ref.\n"); |
| 1703 | lchan_free(lchan); |
| 1704 | return -ENOMEM; |
| 1705 | } |
| 1706 | |
| 1707 | memcpy(lchan->rqd_ref, rqd_ref, sizeof(*rqd_ref)); |
| 1708 | lchan->rqd_ta = rqd_ta; |
| 1709 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1710 | arfcn = lchan->ts->trx->arfcn; |
| 1711 | subch = lchan->nr; |
| 1712 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 1713 | lchan->encr.alg_id = RSL_ENC_ALG_A5(0); /* no encryption */ |
Harald Welte (local) | cbd4610 | 2009-08-13 10:14:26 +0200 | [diff] [blame] | 1714 | lchan->ms_power = ms_pwr_ctl_lvl(bts->band, bts->ms_max_power); |
Harald Welte | 9a229e1 | 2009-08-10 00:45:40 +0200 | [diff] [blame] | 1715 | lchan->bs_power = 0; /* 0dB reduction, output power = Pn */ |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 1716 | lchan->rsl_cmode = RSL_CMOD_SPD_SIGN; |
Harald Welte | 77234e1 | 2009-08-28 23:28:28 +0900 | [diff] [blame] | 1717 | lchan->tch_mode = GSM48_CMODE_SIGN; |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1718 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 1719 | /* Start another timer or assume the BTS sends a ACK/NACK? */ |
| 1720 | lchan->act_timer.cb = lchan_act_tmr_cb; |
| 1721 | lchan->act_timer.data = lchan; |
| 1722 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 1723 | |
Andreas Eversberg | 0f18e5e | 2011-12-16 17:45:37 +0100 | [diff] [blame] | 1724 | DEBUGP(DRSL, "%s Activating ARFCN(%u) SS(%u) lctype %s " |
| 1725 | "r=%s ra=0x%02x ta=%d\n", gsm_lchan_name(lchan), arfcn, subch, |
| 1726 | gsm_lchant_name(lchan->type), gsm_chreq_name(chreq_reason), |
| 1727 | rqd_ref->ra, rqd_ta); |
| 1728 | |
Neels Hofmeyr | fe9fdfa | 2016-07-15 01:26:03 +0200 | [diff] [blame] | 1729 | rsl_chan_activate_lchan(lchan, RSL_ACT_INTRA_IMM_ASS, 0); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1730 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1731 | return 0; |
| 1732 | } |
| 1733 | |
| 1734 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan) |
| 1735 | { |
| 1736 | struct gsm_bts *bts = lchan->ts->trx->bts; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1737 | uint8_t buf[GSM_MACBLOCK_LEN]; |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1738 | struct gsm48_imm_ass *ia = (struct gsm48_imm_ass *) buf; |
| 1739 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1740 | /* create IMMEDIATE ASSIGN 04.08 messge */ |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1741 | memset(ia, 0, sizeof(*ia)); |
laforge | 50312e8 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1742 | /* we set ia->l2_plen once we know the length of the MA below */ |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1743 | ia->proto_discr = GSM48_PDISC_RR; |
| 1744 | ia->msg_type = GSM48_MT_RR_IMM_ASS; |
| 1745 | ia->page_mode = GSM48_PM_SAME; |
| 1746 | gsm48_lchan2chan_desc(&ia->chan_desc, lchan); |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1747 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1748 | /* use request reference extracted from CHAN_RQD */ |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1749 | memcpy(&ia->req_ref, lchan->rqd_ref, sizeof(ia->req_ref)); |
| 1750 | ia->timing_advance = lchan->rqd_ta; |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1751 | if (!lchan->ts->hopping.enabled) { |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1752 | ia->mob_alloc_len = 0; |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1753 | } else { |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1754 | ia->mob_alloc_len = lchan->ts->hopping.ma_len; |
| 1755 | memcpy(ia->mob_alloc, lchan->ts->hopping.ma_data, ia->mob_alloc_len); |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1756 | } |
Harald Welte | 07f3218 | 2010-06-28 18:41:27 +0200 | [diff] [blame] | 1757 | /* we need to subtract 1 byte from sizeof(*ia) since ia includes the l2_plen field */ |
| 1758 | ia->l2_plen = GSM48_LEN2PLEN((sizeof(*ia)-1) + ia->mob_alloc_len); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1759 | |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1760 | /* Start timer T3101 to wait for GSM48_MT_RR_PAG_RESP */ |
| 1761 | lchan->T3101.cb = t3101_expired; |
| 1762 | lchan->T3101.data = lchan; |
Pablo Neira Ayuso | 840ccf6 | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1763 | osmo_timer_schedule(&lchan->T3101, bts->network->T3101, 0); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1764 | |
| 1765 | /* send IMMEDIATE ASSIGN CMD on RSL to BTS (to send on CCCH to MS) */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1766 | return rsl_imm_assign_cmd(bts, sizeof(*ia)+ia->mob_alloc_len, (uint8_t *) ia); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1767 | } |
| 1768 | |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1769 | /* current load on the CCCH */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1770 | static int rsl_rx_ccch_load(struct msgb *msg) |
| 1771 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1772 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1773 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1774 | struct ccch_signal_data sd; |
| 1775 | |
| 1776 | sd.bts = sign_link->trx->bts; |
| 1777 | sd.rach_slot_count = -1; |
| 1778 | sd.rach_busy_count = -1; |
| 1779 | sd.rach_access_count = -1; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1780 | |
| 1781 | switch (rslh->data[0]) { |
| 1782 | case RSL_IE_PAGING_LOAD: |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1783 | sd.pg_buf_space = rslh->data[1] << 8 | rslh->data[2]; |
| 1784 | if (is_ipaccess_bts(sign_link->trx->bts) && sd.pg_buf_space == 0xffff) { |
Harald Welte | 008a492 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1785 | /* paging load below configured threshold, use 50 as default */ |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1786 | sd.pg_buf_space = 50; |
Harald Welte | 008a492 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1787 | } |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1788 | paging_update_buffer_space(sign_link->trx->bts, sd.pg_buf_space); |
| 1789 | osmo_signal_dispatch(SS_CCCH, S_CCCH_PAGING_LOAD, &sd); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1790 | break; |
| 1791 | case RSL_IE_RACH_LOAD: |
| 1792 | if (msg->data_len >= 7) { |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1793 | sd.rach_slot_count = rslh->data[2] << 8 | rslh->data[3]; |
| 1794 | sd.rach_busy_count = rslh->data[4] << 8 | rslh->data[5]; |
| 1795 | sd.rach_access_count = rslh->data[6] << 8 | rslh->data[7]; |
| 1796 | osmo_signal_dispatch(SS_CCCH, S_CCCH_RACH_LOAD, &sd); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1797 | } |
| 1798 | break; |
| 1799 | default: |
| 1800 | break; |
| 1801 | } |
| 1802 | |
| 1803 | return 0; |
| 1804 | } |
| 1805 | |
| 1806 | static int abis_rsl_rx_cchan(struct msgb *msg) |
| 1807 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1808 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1809 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1810 | int rc = 0; |
| 1811 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1812 | msg->lchan = lchan_lookup(sign_link->trx, rslh->chan_nr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1813 | |
| 1814 | switch (rslh->c.msg_type) { |
| 1815 | case RSL_MT_CHAN_RQD: |
| 1816 | /* MS has requested a channel on the RACH */ |
| 1817 | rc = rsl_rx_chan_rqd(msg); |
| 1818 | break; |
| 1819 | case RSL_MT_CCCH_LOAD_IND: |
| 1820 | /* current load on the CCCH */ |
| 1821 | rc = rsl_rx_ccch_load(msg); |
| 1822 | break; |
| 1823 | case RSL_MT_DELETE_IND: |
| 1824 | /* CCCH overloaded, IMM_ASSIGN was dropped */ |
| 1825 | case RSL_MT_CBCH_LOAD_IND: |
| 1826 | /* current load on the CBCH */ |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1827 | LOGP(DRSL, LOGL_NOTICE, "Unimplemented Abis RSL TRX message " |
| 1828 | "type 0x%02x\n", rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1829 | break; |
| 1830 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1831 | LOGP(DRSL, LOGL_NOTICE, "Unknown Abis RSL TRX message type " |
| 1832 | "0x%02x\n", rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1833 | return -EINVAL; |
| 1834 | } |
| 1835 | |
| 1836 | return rc; |
| 1837 | } |
| 1838 | |
| 1839 | static int rsl_rx_rll_err_ind(struct msgb *msg) |
| 1840 | { |
Holger Hans Peter Freyther | 80abe25 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1841 | struct tlv_parsed tp; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1842 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Holger Hans Peter Freyther | 80abe25 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1843 | uint8_t rlm_cause; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1844 | |
Holger Hans Peter Freyther | 80abe25 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1845 | rsl_tlv_parse(&tp, rllh->data, msgb_l2len(msg) - sizeof(*rllh)); |
| 1846 | if (!TLVP_PRESENT(&tp, RSL_IE_RLM_CAUSE)) { |
| 1847 | LOGP(DRLL, LOGL_ERROR, |
| 1848 | "%s ERROR INDICATION without mandantory cause.\n", |
| 1849 | gsm_lchan_name(msg->lchan)); |
| 1850 | return -1; |
| 1851 | } |
| 1852 | |
| 1853 | rlm_cause = *TLVP_VAL(&tp, RSL_IE_RLM_CAUSE); |
Holger Hans Peter Freyther | de4da29 | 2014-04-19 16:45:36 +0200 | [diff] [blame] | 1854 | LOGP(DRLL, LOGL_ERROR, "%s ERROR INDICATION cause=%s in state=%s\n", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1855 | gsm_lchan_name(msg->lchan), |
Holger Hans Peter Freyther | de4da29 | 2014-04-19 16:45:36 +0200 | [diff] [blame] | 1856 | rsl_rlm_cause_name(rlm_cause), |
| 1857 | gsm_lchans_name(msg->lchan->state)); |
| 1858 | |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1859 | rll_indication(msg->lchan, rllh->link_id, BSC_RLLR_IND_ERR_IND); |
Harald Welte (local) | bd76cce | 2009-12-26 23:55:00 +0100 | [diff] [blame] | 1860 | |
Holger Hans Peter Freyther | 80abe25 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1861 | if (rlm_cause == RLL_CAUSE_T200_EXPIRED) { |
Alexander Couzens | d8aad3a | 2016-08-02 11:34:11 +0200 | [diff] [blame] | 1862 | rate_ctr_inc(&msg->lchan->ts->trx->bts->network->bsc_ctrs->ctr[BSC_CTR_CHAN_RLL_ERR]); |
Holger Hans Peter Freyther | 29eb19b | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 1863 | return rsl_rf_chan_release_err(msg->lchan); |
Holger Hans Peter Freyther | 27942e9 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1864 | } |
Harald Welte | 692f585 | 2009-07-04 09:40:05 +0200 | [diff] [blame] | 1865 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1866 | return 0; |
| 1867 | } |
| 1868 | |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1869 | static void rsl_handle_release(struct gsm_lchan *lchan) |
| 1870 | { |
Holger Hans Peter Freyther | 3fdf5b9 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1871 | int sapi; |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1872 | struct gsm_bts *bts; |
Holger Hans Peter Freyther | 3fdf5b9 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1873 | |
Holger Hans Peter Freyther | 701a647 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 1874 | /* |
| 1875 | * Maybe only one link/SAPI was releasd or the error handling |
| 1876 | * was activated. Just return now and let the other code handle |
| 1877 | * it. |
| 1878 | */ |
Holger Hans Peter Freyther | d26cbc8 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1879 | if (lchan->state != LCHAN_S_REL_REQ) |
Holger Hans Peter Freyther | 3fdf5b9 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1880 | return; |
| 1881 | |
| 1882 | for (sapi = 0; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 1883 | if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) |
| 1884 | continue; |
Harald Welte | 497aa98 | 2010-12-24 12:51:07 +0100 | [diff] [blame] | 1885 | LOGP(DRSL, LOGL_DEBUG, "%s waiting for SAPI=%d to be released.\n", |
Holger Hans Peter Freyther | 3fdf5b9 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1886 | gsm_lchan_name(lchan), sapi); |
| 1887 | return; |
| 1888 | } |
| 1889 | |
Holger Hans Peter Freyther | d26cbc8 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1890 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1891 | /* Stop T3109 and wait for T3111 before re-using the channel */ |
| 1892 | osmo_timer_del(&lchan->T3109); |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1893 | lchan->T3111.cb = t3111_expired; |
| 1894 | lchan->T3111.data = lchan; |
| 1895 | bts = lchan->ts->trx->bts; |
Pablo Neira Ayuso | 840ccf6 | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1896 | osmo_timer_schedule(&lchan->T3111, bts->network->T3111, 0); |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1897 | } |
| 1898 | |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1899 | /* ESTABLISH INDICATION, LOCATION AREA UPDATE REQUEST |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1900 | 0x02, 0x06, |
| 1901 | 0x01, 0x20, |
| 1902 | 0x02, 0x00, |
| 1903 | 0x0b, 0x00, 0x0f, 0x05, 0x08, ... */ |
| 1904 | |
| 1905 | static int abis_rsl_rx_rll(struct msgb *msg) |
| 1906 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1907 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1908 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
| 1909 | int rc = 0; |
| 1910 | char *ts_name; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1911 | uint8_t sapi = rllh->link_id & 7; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1912 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1913 | msg->lchan = lchan_lookup(sign_link->trx, rllh->chan_nr); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1914 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1915 | DEBUGP(DRLL, "%s SAPI=%u ", ts_name, sapi); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1916 | |
| 1917 | switch (rllh->c.msg_type) { |
| 1918 | case RSL_MT_DATA_IND: |
| 1919 | DEBUGPC(DRLL, "DATA INDICATION\n"); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1920 | if (msgb_l2len(msg) > |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1921 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1922 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1923 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | 64994ce | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1924 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1925 | } |
| 1926 | break; |
| 1927 | case RSL_MT_EST_IND: |
| 1928 | DEBUGPC(DRLL, "ESTABLISH INDICATION\n"); |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1929 | /* lchan is established, stop T3101 */ |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1930 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_MS; |
Pablo Neira Ayuso | 840ccf6 | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1931 | osmo_timer_del(&msg->lchan->T3101); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1932 | if (msgb_l2len(msg) > |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1933 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1934 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1935 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | 64994ce | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1936 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1937 | } |
| 1938 | break; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1939 | case RSL_MT_EST_CONF: |
Harald Welte | 6140217 | 2009-08-09 14:13:58 +0200 | [diff] [blame] | 1940 | DEBUGPC(DRLL, "ESTABLISH CONFIRM\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1941 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_NET; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1942 | rll_indication(msg->lchan, rllh->link_id, |
| 1943 | BSC_RLLR_IND_EST_CONF); |
| 1944 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1945 | case RSL_MT_REL_IND: |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1946 | /* BTS informs us of having received DISC from MS */ |
Harald Welte | b660144 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1947 | DEBUGPC(DRLL, "RELEASE INDICATION\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1948 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1949 | rll_indication(msg->lchan, rllh->link_id, |
| 1950 | BSC_RLLR_IND_REL_IND); |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1951 | rsl_handle_release(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1952 | break; |
| 1953 | case RSL_MT_REL_CONF: |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1954 | /* BTS informs us of having received UA from MS, |
| 1955 | * in response to DISC that we've sent earlier */ |
Harald Welte | b660144 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1956 | DEBUGPC(DRLL, "RELEASE CONFIRMATION\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1957 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1958 | rsl_handle_release(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1959 | break; |
| 1960 | case RSL_MT_ERROR_IND: |
Neels Hofmeyr | 6fcad25 | 2016-07-26 19:39:43 +0200 | [diff] [blame] | 1961 | DEBUGPC(DRLL, "ERROR INDICATION\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1962 | rc = rsl_rx_rll_err_ind(msg); |
| 1963 | break; |
| 1964 | case RSL_MT_UNIT_DATA_IND: |
Neels Hofmeyr | 6fcad25 | 2016-07-26 19:39:43 +0200 | [diff] [blame] | 1965 | DEBUGPC(DRLL, "UNIT DATA INDICATION\n"); |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1966 | LOGP(DRLL, LOGL_NOTICE, "unimplemented Abis RLL message " |
| 1967 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1968 | break; |
| 1969 | default: |
Neels Hofmeyr | 6fcad25 | 2016-07-26 19:39:43 +0200 | [diff] [blame] | 1970 | DEBUGPC(DRLL, "UNKNOWN\n"); |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1971 | LOGP(DRLL, LOGL_NOTICE, "unknown Abis RLL message " |
| 1972 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1973 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1974 | return rc; |
| 1975 | } |
| 1976 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1977 | static uint8_t ipa_smod_s_for_lchan(struct gsm_lchan *lchan) |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1978 | { |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1979 | switch (lchan->tch_mode) { |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1980 | case GSM48_CMODE_SPEECH_V1: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1981 | switch (lchan->type) { |
| 1982 | case GSM_LCHAN_TCH_F: |
| 1983 | return 0x00; |
| 1984 | case GSM_LCHAN_TCH_H: |
| 1985 | return 0x03; |
| 1986 | default: |
| 1987 | break; |
| 1988 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 1989 | break; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1990 | case GSM48_CMODE_SPEECH_EFR: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1991 | switch (lchan->type) { |
| 1992 | case GSM_LCHAN_TCH_F: |
| 1993 | return 0x01; |
| 1994 | /* there's no half-rate EFR */ |
| 1995 | default: |
| 1996 | break; |
| 1997 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 1998 | break; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1999 | case GSM48_CMODE_SPEECH_AMR: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2000 | switch (lchan->type) { |
| 2001 | case GSM_LCHAN_TCH_F: |
| 2002 | return 0x02; |
| 2003 | case GSM_LCHAN_TCH_H: |
| 2004 | return 0x05; |
| 2005 | default: |
| 2006 | break; |
| 2007 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2008 | break; |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2009 | default: |
| 2010 | break; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2011 | } |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2012 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access speech mode for " |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 2013 | "tch_mode == 0x%02x\n", lchan->tch_mode); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2014 | return 0; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2015 | } |
| 2016 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2017 | static uint8_t ipa_rtp_pt_for_lchan(struct gsm_lchan *lchan) |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2018 | { |
| 2019 | switch (lchan->tch_mode) { |
| 2020 | case GSM48_CMODE_SPEECH_V1: |
| 2021 | switch (lchan->type) { |
| 2022 | case GSM_LCHAN_TCH_F: |
| 2023 | return RTP_PT_GSM_FULL; |
| 2024 | case GSM_LCHAN_TCH_H: |
| 2025 | return RTP_PT_GSM_HALF; |
| 2026 | default: |
| 2027 | break; |
| 2028 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2029 | break; |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2030 | case GSM48_CMODE_SPEECH_EFR: |
| 2031 | switch (lchan->type) { |
| 2032 | case GSM_LCHAN_TCH_F: |
| 2033 | return RTP_PT_GSM_EFR; |
| 2034 | /* there's no half-rate EFR */ |
| 2035 | default: |
| 2036 | break; |
| 2037 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2038 | break; |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2039 | case GSM48_CMODE_SPEECH_AMR: |
| 2040 | switch (lchan->type) { |
| 2041 | case GSM_LCHAN_TCH_F: |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2042 | case GSM_LCHAN_TCH_H: |
Holger Hans Peter Freyther | d78bee8 | 2011-07-21 10:24:46 +0200 | [diff] [blame] | 2043 | return RTP_PT_AMR; |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2044 | default: |
| 2045 | break; |
| 2046 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 2047 | break; |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2048 | default: |
| 2049 | break; |
| 2050 | } |
| 2051 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access rtp payload type for " |
| 2052 | "tch_mode == 0x%02x\n & lchan_type == %d", |
| 2053 | lchan->tch_mode, lchan->type); |
| 2054 | return 0; |
| 2055 | } |
| 2056 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2057 | /* ip.access specific RSL extensions */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2058 | static void ipac_parse_rtp(struct gsm_lchan *lchan, struct tlv_parsed *tv) |
| 2059 | { |
| 2060 | struct in_addr ip; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2061 | uint16_t port, conn_id; |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2062 | |
| 2063 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_IP)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2064 | ip.s_addr = tlvp_val32_unal(tv, RSL_IE_IPAC_LOCAL_IP); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2065 | DEBUGPC(DRSL, "LOCAL_IP=%s ", inet_ntoa(ip)); |
| 2066 | lchan->abis_ip.bound_ip = ntohl(ip.s_addr); |
| 2067 | } |
| 2068 | |
| 2069 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_PORT)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2070 | port = tlvp_val16_unal(tv, RSL_IE_IPAC_LOCAL_PORT); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2071 | port = ntohs(port); |
| 2072 | DEBUGPC(DRSL, "LOCAL_PORT=%u ", port); |
| 2073 | lchan->abis_ip.bound_port = port; |
| 2074 | } |
| 2075 | |
| 2076 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_CONN_ID)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2077 | conn_id = tlvp_val16_unal(tv, RSL_IE_IPAC_CONN_ID); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2078 | conn_id = ntohs(conn_id); |
| 2079 | DEBUGPC(DRSL, "CON_ID=%u ", conn_id); |
| 2080 | lchan->abis_ip.conn_id = conn_id; |
| 2081 | } |
| 2082 | |
| 2083 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_RTP_PAYLOAD2)) { |
| 2084 | lchan->abis_ip.rtp_payload2 = |
| 2085 | *TLVP_VAL(tv, RSL_IE_IPAC_RTP_PAYLOAD2); |
| 2086 | DEBUGPC(DRSL, "RTP_PAYLOAD2=0x%02x ", |
| 2087 | lchan->abis_ip.rtp_payload2); |
| 2088 | } |
| 2089 | |
| 2090 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_SPEECH_MODE)) { |
| 2091 | lchan->abis_ip.speech_mode = |
| 2092 | *TLVP_VAL(tv, RSL_IE_IPAC_SPEECH_MODE); |
| 2093 | DEBUGPC(DRSL, "speech_mode=0x%02x ", |
| 2094 | lchan->abis_ip.speech_mode); |
| 2095 | } |
| 2096 | |
| 2097 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_IP)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2098 | ip.s_addr = tlvp_val32_unal(tv, RSL_IE_IPAC_REMOTE_IP); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2099 | DEBUGPC(DRSL, "REMOTE_IP=%s ", inet_ntoa(ip)); |
| 2100 | lchan->abis_ip.connect_ip = ntohl(ip.s_addr); |
| 2101 | } |
| 2102 | |
| 2103 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_PORT)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 2104 | port = tlvp_val16_unal(tv, RSL_IE_IPAC_REMOTE_PORT); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2105 | port = ntohs(port); |
| 2106 | DEBUGPC(DRSL, "REMOTE_PORT=%u ", port); |
| 2107 | lchan->abis_ip.connect_port = port; |
| 2108 | } |
| 2109 | } |
| 2110 | |
Harald Welte | 9a696d7 | 2013-02-03 12:06:58 +0100 | [diff] [blame] | 2111 | /*! \brief Issue IPA RSL CRCX to configure RTP on BTS side |
| 2112 | * \param[in] lchan Logical Channel for which we issue CRCX |
| 2113 | */ |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2114 | int rsl_ipacc_crcx(struct gsm_lchan *lchan) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2115 | { |
| 2116 | struct msgb *msg = rsl_msgb_alloc(); |
| 2117 | struct abis_rsl_dchan_hdr *dh; |
| 2118 | |
| 2119 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2120 | init_dchan_hdr(dh, RSL_MT_IPAC_CRCX); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2121 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 2122 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2123 | |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2124 | /* 0x1- == receive-only, 0x-1 == EFR codec */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2125 | lchan->abis_ip.speech_mode = 0x10 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2126 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2127 | msgb_tv_put(msg, RSL_IE_IPAC_SPEECH_MODE, lchan->abis_ip.speech_mode); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2128 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD, lchan->abis_ip.rtp_payload); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2129 | |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2130 | DEBUGP(DRSL, "%s IPAC_BIND speech_mode=0x%02x RTP_PAYLOAD=%d\n", |
| 2131 | gsm_lchan_name(lchan), lchan->abis_ip.speech_mode, |
| 2132 | lchan->abis_ip.rtp_payload); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2133 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2134 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2135 | |
| 2136 | return abis_rsl_sendmsg(msg); |
| 2137 | } |
| 2138 | |
Harald Welte | 9a696d7 | 2013-02-03 12:06:58 +0100 | [diff] [blame] | 2139 | /*! \brief Issue IPA RSL MDCX to configure MGW-side of RTP |
| 2140 | * \param[in] lchan Logical Channel for which we issue MDCX |
| 2141 | * \param[in] ip Remote (MGW) IP address for RTP |
| 2142 | * \param[in] port Remote (MGW) UDP port number for RTP |
| 2143 | * \param[in] rtp_payload2 Contents of RTP PAYLOAD 2 IE |
| 2144 | */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2145 | int rsl_ipacc_mdcx(struct gsm_lchan *lchan, uint32_t ip, uint16_t port, |
| 2146 | uint8_t rtp_payload2) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2147 | { |
| 2148 | struct msgb *msg = rsl_msgb_alloc(); |
| 2149 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2150 | uint32_t *att_ip; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2151 | struct in_addr ia; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2152 | |
| 2153 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2154 | init_dchan_hdr(dh, RSL_MT_IPAC_MDCX); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2155 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 2156 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2157 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2158 | /* we need to store these now as MDCX_ACK does not return them :( */ |
| 2159 | lchan->abis_ip.rtp_payload2 = rtp_payload2; |
| 2160 | lchan->abis_ip.connect_port = port; |
| 2161 | lchan->abis_ip.connect_ip = ip; |
| 2162 | |
Harald Welte | fb4a9e9 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 2163 | /* 0x0- == both directions, 0x-1 == EFR codec */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2164 | lchan->abis_ip.speech_mode = 0x00 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2165 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | fb4a9e9 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 2166 | |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2167 | ia.s_addr = htonl(ip); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2168 | DEBUGP(DRSL, "%s IPAC_MDCX IP=%s PORT=%d RTP_PAYLOAD=%d RTP_PAYLOAD2=%d " |
| 2169 | "CONN_ID=%d speech_mode=0x%02x\n", gsm_lchan_name(lchan), |
| 2170 | inet_ntoa(ia), port, lchan->abis_ip.rtp_payload, rtp_payload2, |
| 2171 | lchan->abis_ip.conn_id, lchan->abis_ip.speech_mode); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2172 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2173 | msgb_tv16_put(msg, RSL_IE_IPAC_CONN_ID, lchan->abis_ip.conn_id); |
| 2174 | msgb_v_put(msg, RSL_IE_IPAC_REMOTE_IP); |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2175 | att_ip = (uint32_t *) msgb_put(msg, sizeof(ip)); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2176 | *att_ip = ia.s_addr; |
| 2177 | msgb_tv16_put(msg, RSL_IE_IPAC_REMOTE_PORT, port); |
| 2178 | msgb_tv_put(msg, RSL_IE_IPAC_SPEECH_MODE, lchan->abis_ip.speech_mode); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 2179 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD, lchan->abis_ip.rtp_payload); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 2180 | if (rtp_payload2) |
| 2181 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD2, rtp_payload2); |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2182 | |
| 2183 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2184 | |
| 2185 | return abis_rsl_sendmsg(msg); |
| 2186 | } |
| 2187 | |
Harald Welte | 9947d9f | 2009-12-20 16:51:09 +0100 | [diff] [blame] | 2188 | /* tell BTS to connect RTP stream to our local RTP socket */ |
| 2189 | int rsl_ipacc_mdcx_to_rtpsock(struct gsm_lchan *lchan) |
| 2190 | { |
| 2191 | struct rtp_socket *rs = lchan->abis_ip.rtp_socket; |
| 2192 | int rc; |
| 2193 | |
| 2194 | rc = rsl_ipacc_mdcx(lchan, ntohl(rs->rtp.sin_local.sin_addr.s_addr), |
| 2195 | ntohs(rs->rtp.sin_local.sin_port), |
| 2196 | /* FIXME: use RTP payload of bound socket, not BTS*/ |
| 2197 | lchan->abis_ip.rtp_payload2); |
| 2198 | |
| 2199 | return rc; |
| 2200 | } |
| 2201 | |
Harald Welte | 6f40df0 | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 2202 | int rsl_ipacc_pdch_activate(struct gsm_bts_trx_ts *ts, int act) |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2203 | { |
| 2204 | struct msgb *msg = rsl_msgb_alloc(); |
| 2205 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 2206 | uint8_t msg_type; |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2207 | |
Neels Hofmeyr | 1d9a3aa | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 2208 | if (ts->flags & TS_F_PDCH_PENDING_MASK) { |
| 2209 | LOGP(DRSL, LOGL_ERROR, |
| 2210 | "%s PDCH %s requested, but a PDCH%s%s is still pending\n", |
| 2211 | gsm_ts_name(ts), |
| 2212 | act ? "ACT" : "DEACT", |
| 2213 | ts->flags & TS_F_PDCH_ACT_PENDING? " ACT" : "", |
| 2214 | ts->flags & TS_F_PDCH_DEACT_PENDING? " DEACT" : ""); |
| 2215 | return -EINVAL; |
| 2216 | } |
| 2217 | |
| 2218 | if (act){ |
Neels Hofmeyr | 31b2630 | 2016-07-06 14:39:04 +0200 | [diff] [blame] | 2219 | /* Callers should heed the GPRS mode. */ |
| 2220 | OSMO_ASSERT(ts->trx->bts->gprs.mode != BTS_GPRS_NONE); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2221 | msg_type = RSL_MT_IPAC_PDCH_ACT; |
Neels Hofmeyr | 1d9a3aa | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 2222 | ts->flags |= TS_F_PDCH_ACT_PENDING; |
| 2223 | } else { |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2224 | msg_type = RSL_MT_IPAC_PDCH_DEACT; |
Neels Hofmeyr | 1d9a3aa | 2016-06-15 15:32:29 +0200 | [diff] [blame] | 2225 | ts->flags |= TS_F_PDCH_DEACT_PENDING; |
| 2226 | } |
| 2227 | /* TODO add timeout to cancel PDCH DE/ACT */ |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2228 | |
| 2229 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2230 | init_dchan_hdr(dh, msg_type); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2231 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Neels Hofmeyr | b597811 | 2016-07-18 23:43:44 +0200 | [diff] [blame] | 2232 | dh->chan_nr = gsm_pchan2chan_nr(GSM_PCHAN_PDCH, ts->nr, 0); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2233 | |
Neels Hofmeyr | 6b27230 | 2016-05-31 17:51:41 +0200 | [diff] [blame] | 2234 | DEBUGP(DRSL, "%s IPAC PDCH %sACT\n", gsm_ts_name(ts), |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 2235 | act ? "" : "DE"); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2236 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2237 | msg->dst = ts->trx->rsl_link; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 2238 | |
| 2239 | return abis_rsl_sendmsg(msg); |
| 2240 | } |
| 2241 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2242 | static int abis_rsl_rx_ipacc_crcx_ack(struct msgb *msg) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2243 | { |
| 2244 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 2245 | struct tlv_parsed tv; |
Harald Welte | 8750421 | 2009-12-02 01:56:49 +0530 | [diff] [blame] | 2246 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2247 | |
| 2248 | /* the BTS has acknowledged a local bind, it now tells us the IP |
| 2249 | * address and port number to which it has bound the given logical |
| 2250 | * channel */ |
| 2251 | |
| 2252 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 2253 | if (!TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_PORT) || |
| 2254 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_IP) || |
Harald Welte | b949895 | 2009-07-12 09:45:05 +0200 | [diff] [blame] | 2255 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_CONN_ID)) { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2256 | LOGP(DRSL, LOGL_NOTICE, "mandatory IE missing"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2257 | return -EINVAL; |
| 2258 | } |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 2259 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2260 | ipac_parse_rtp(lchan, &tv); |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 2261 | |
Pablo Neira Ayuso | ef717c6 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 2262 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_CRCX_ACK, msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2263 | |
| 2264 | return 0; |
| 2265 | } |
| 2266 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2267 | static int abis_rsl_rx_ipacc_mdcx_ack(struct msgb *msg) |
| 2268 | { |
| 2269 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 2270 | struct tlv_parsed tv; |
| 2271 | struct gsm_lchan *lchan = msg->lchan; |
| 2272 | |
| 2273 | /* the BTS has acknowledged a remote connect request and |
| 2274 | * it now tells us the IP address and port number to which it has |
| 2275 | * connected the given logical channel */ |
| 2276 | |
| 2277 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 2278 | ipac_parse_rtp(lchan, &tv); |
Pablo Neira Ayuso | ef717c6 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 2279 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_MDCX_ACK, msg->lchan); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2280 | |
| 2281 | return 0; |
| 2282 | } |
| 2283 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2284 | static int abis_rsl_rx_ipacc_dlcx_ind(struct msgb *msg) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2285 | { |
| 2286 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 2287 | struct tlv_parsed tv; |
| 2288 | |
| 2289 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2290 | |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 2291 | if (TLVP_PRESENT(&tv, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2292 | print_rsl_cause(LOGL_DEBUG, TLVP_VAL(&tv, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 2293 | TLVP_LEN(&tv, RSL_IE_CAUSE)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2294 | |
Pablo Neira Ayuso | ef717c6 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 2295 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_DLCX_IND, msg->lchan); |
Harald Welte | ba4e58d | 2009-07-28 18:02:05 +0200 | [diff] [blame] | 2296 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2297 | return 0; |
| 2298 | } |
| 2299 | |
| 2300 | static int abis_rsl_rx_ipacc(struct msgb *msg) |
| 2301 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2302 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2303 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2304 | char *ts_name; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2305 | int rc = 0; |
| 2306 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2307 | msg->lchan = lchan_lookup(sign_link->trx, rllh->chan_nr); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 2308 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2309 | |
| 2310 | switch (rllh->c.msg_type) { |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2311 | case RSL_MT_IPAC_CRCX_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2312 | DEBUGP(DRSL, "%s IPAC_CRCX_ACK ", ts_name); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2313 | rc = abis_rsl_rx_ipacc_crcx_ack(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2314 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2315 | case RSL_MT_IPAC_CRCX_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2316 | /* somehow the BTS was unable to bind the lchan to its local |
| 2317 | * port?!? */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2318 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_CRCX_NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2319 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2320 | case RSL_MT_IPAC_MDCX_ACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2321 | /* the BTS tells us that a connect operation was successful */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2322 | DEBUGP(DRSL, "%s IPAC_MDCX_ACK ", ts_name); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2323 | rc = abis_rsl_rx_ipacc_mdcx_ack(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2324 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2325 | case RSL_MT_IPAC_MDCX_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2326 | /* somehow the BTS was unable to connect the lchan to a remote |
| 2327 | * port */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2328 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_MDCX_NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2329 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2330 | case RSL_MT_IPAC_DLCX_IND: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2331 | DEBUGP(DRSL, "%s IPAC_DLCX_IND ", ts_name); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2332 | rc = abis_rsl_rx_ipacc_dlcx_ind(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2333 | break; |
| 2334 | default: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2335 | LOGP(DRSL, LOGL_NOTICE, "Unknown ip.access msg_type 0x%02x\n", |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2336 | rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2337 | break; |
| 2338 | } |
| 2339 | DEBUGPC(DRSL, "\n"); |
| 2340 | |
| 2341 | return rc; |
| 2342 | } |
| 2343 | |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2344 | int dyn_ts_switchover_start(struct gsm_bts_trx_ts *ts, |
Neels Hofmeyr | b763811 | 2016-07-23 20:08:41 +0200 | [diff] [blame] | 2345 | enum gsm_phys_chan_config to_pchan) |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2346 | { |
| 2347 | int ss; |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2348 | int rc = -EIO; |
| 2349 | |
| 2350 | OSMO_ASSERT(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH); |
| 2351 | DEBUGP(DRSL, "%s starting switchover to %s\n", |
| 2352 | gsm_ts_and_pchan_name(ts), gsm_pchan_name(to_pchan)); |
| 2353 | |
| 2354 | if (ts->dyn.pchan_is != ts->dyn.pchan_want) { |
| 2355 | LOGP(DRSL, LOGL_ERROR, |
| 2356 | "%s: Attempt to switch dynamic channel to %s," |
| 2357 | " but is already in switchover.\n", |
| 2358 | gsm_ts_and_pchan_name(ts), |
| 2359 | gsm_pchan_name(to_pchan)); |
| 2360 | return ts->dyn.pchan_want == to_pchan? 0 : -EAGAIN; |
| 2361 | } |
| 2362 | |
| 2363 | if (ts->dyn.pchan_is == to_pchan) { |
| 2364 | LOGP(DRSL, LOGL_INFO, |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2365 | "%s %s Already is in %s mode, cannot switchover.\n", |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2366 | gsm_ts_name(ts), gsm_pchan_name(ts->pchan), |
| 2367 | gsm_pchan_name(to_pchan)); |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2368 | return -EINVAL; |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2369 | } |
| 2370 | |
| 2371 | /* Paranoia: let's make sure all is indeed released. */ |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2372 | for (ss = 0; ss < ts_subslots(ts); ss++) { |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2373 | struct gsm_lchan *lc = &ts->lchan[ss]; |
| 2374 | if (lc->state != LCHAN_S_NONE) { |
| 2375 | LOGP(DRSL, LOGL_ERROR, |
| 2376 | "%s Attempt to switch dynamic channel to %s," |
| 2377 | " but is not fully released.\n", |
| 2378 | gsm_ts_and_pchan_name(ts), |
| 2379 | gsm_pchan_name(to_pchan)); |
| 2380 | return -EAGAIN; |
| 2381 | } |
| 2382 | } |
| 2383 | |
| 2384 | /* Record that we're busy switching. */ |
| 2385 | ts->dyn.pchan_want = to_pchan; |
| 2386 | |
| 2387 | /* |
| 2388 | * To switch from PDCH, we need to initiate the release from the BSC |
| 2389 | * side. dyn_ts_switchover_continue() will be called from |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2390 | * rsl_rx_rf_chan_rel_ack(). PDCH is always on lchan[0]. |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2391 | */ |
| 2392 | if (ts->dyn.pchan_is == GSM_PCHAN_PDCH) { |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2393 | rsl_lchan_set_state(ts->lchan, LCHAN_S_REL_REQ); |
| 2394 | rc = rsl_rf_chan_release(ts->lchan, 0, SACCH_NONE); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2395 | if (rc) { |
| 2396 | LOGP(DRSL, LOGL_ERROR, |
| 2397 | "%s RSL RF Chan Release failed\n", |
| 2398 | gsm_ts_and_pchan_name(ts)); |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2399 | return dyn_ts_switchover_failed(ts, rc); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2400 | } |
| 2401 | return 0; |
| 2402 | } |
| 2403 | |
| 2404 | /* |
| 2405 | * To switch from TCH/F and TCH/H pchans, this has been called from |
| 2406 | * rsl_rx_rf_chan_rel_ack(), i.e. release is complete. Go ahead and |
| 2407 | * activate as new type. This will always be PDCH. |
| 2408 | */ |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2409 | return dyn_ts_switchover_continue(ts); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2410 | } |
| 2411 | |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2412 | static int dyn_ts_switchover_continue(struct gsm_bts_trx_ts *ts) |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2413 | { |
| 2414 | int rc; |
| 2415 | uint8_t act_type; |
| 2416 | uint8_t ho_ref; |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2417 | int ss; |
| 2418 | struct gsm_lchan *lchan; |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2419 | |
| 2420 | OSMO_ASSERT(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH); |
| 2421 | DEBUGP(DRSL, "%s switchover: release complete," |
| 2422 | " activating new pchan type\n", |
| 2423 | gsm_ts_and_pchan_name(ts)); |
| 2424 | |
| 2425 | if (ts->dyn.pchan_is == ts->dyn.pchan_want) { |
| 2426 | LOGP(DRSL, LOGL_ERROR, |
| 2427 | "%s Requested to switchover dynamic channel to the" |
| 2428 | " same type it is already in.\n", |
| 2429 | gsm_ts_and_pchan_name(ts)); |
| 2430 | return 0; |
| 2431 | } |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2432 | |
| 2433 | for (ss = 0; ss < ts_subslots(ts); ss++) { |
| 2434 | lchan = &ts->lchan[ss]; |
| 2435 | if (lchan->rqd_ref) { |
| 2436 | LOGP(DRSL, LOGL_ERROR, |
| 2437 | "%s During dyn TS switchover, expecting no" |
| 2438 | " Request Reference to be pending. Discarding!\n", |
| 2439 | gsm_lchan_name(lchan)); |
| 2440 | talloc_free(lchan->rqd_ref); |
| 2441 | lchan->rqd_ref = NULL; |
| 2442 | } |
| 2443 | } |
| 2444 | |
| 2445 | /* |
| 2446 | * When switching pchan modes, all lchans are unused. So always |
| 2447 | * activate whatever wants to be activated on the first lchan. (We |
| 2448 | * wouldn't remember to use lchan[1] across e.g. a PDCH deact anyway) |
| 2449 | */ |
| 2450 | lchan = ts->lchan; |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2451 | |
| 2452 | /* |
| 2453 | * For TCH/x, the lchan->type has been set in lchan_alloc(), but it may |
| 2454 | * have been lost during channel release due to dynamic switchover. |
| 2455 | * |
| 2456 | * For PDCH, the lchan->type will actually remain NONE. |
| 2457 | * TODO: set GSM_LCHAN_PDTCH? |
| 2458 | */ |
| 2459 | switch (ts->dyn.pchan_want) { |
| 2460 | case GSM_PCHAN_TCH_F: |
| 2461 | lchan->type = GSM_LCHAN_TCH_F; |
| 2462 | break; |
| 2463 | case GSM_PCHAN_TCH_H: |
| 2464 | lchan->type = GSM_LCHAN_TCH_H; |
| 2465 | break; |
| 2466 | case GSM_PCHAN_PDCH: |
| 2467 | lchan->type = GSM_LCHAN_NONE; |
| 2468 | break; |
| 2469 | default: |
| 2470 | LOGP(DRSL, LOGL_ERROR, |
| 2471 | "%s Invalid target pchan for dynamic TS\n", |
| 2472 | gsm_ts_and_pchan_name(ts)); |
| 2473 | } |
| 2474 | |
| 2475 | act_type = (ts->dyn.pchan_want == GSM_PCHAN_PDCH) |
| 2476 | ? RSL_ACT_OSMO_PDCH |
| 2477 | : lchan->dyn.act_type; |
| 2478 | ho_ref = (ts->dyn.pchan_want == GSM_PCHAN_PDCH) |
| 2479 | ? 0 |
| 2480 | : lchan->dyn.ho_ref; |
| 2481 | |
| 2482 | /* Fetch the rqd_ref back from before switchover started. */ |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2483 | lchan->rqd_ref = lchan->dyn.rqd_ref; |
| 2484 | lchan->rqd_ta = lchan->dyn.rqd_ta; |
| 2485 | lchan->dyn.rqd_ref = NULL; |
| 2486 | lchan->dyn.rqd_ta = 0; |
| 2487 | |
Neels Hofmeyr | b6cf05e | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2488 | /* During switchover, we have received a release ack, which means that |
| 2489 | * the act_timer has been stopped. Start the timer again so we mark |
| 2490 | * this channel broken if the activation ack comes too late. */ |
| 2491 | lchan->act_timer.cb = lchan_act_tmr_cb; |
| 2492 | lchan->act_timer.data = lchan; |
| 2493 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 2494 | |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2495 | rc = rsl_chan_activate_lchan(lchan, act_type, ho_ref); |
| 2496 | if (rc) { |
| 2497 | LOGP(DRSL, LOGL_ERROR, |
| 2498 | "%s RSL Chan Activate failed\n", |
| 2499 | gsm_ts_and_pchan_name(ts)); |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2500 | return dyn_ts_switchover_failed(ts, rc); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2501 | } |
| 2502 | return 0; |
| 2503 | } |
| 2504 | |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2505 | static int dyn_ts_switchover_failed(struct gsm_bts_trx_ts *ts, int rc) |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2506 | { |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2507 | ts->dyn.pchan_want = ts->dyn.pchan_is; |
| 2508 | LOGP(DRSL, LOGL_ERROR, "%s Error %d during dynamic channel switchover." |
| 2509 | " Going back to previous pchan.\n", gsm_ts_and_pchan_name(ts), |
| 2510 | rc); |
| 2511 | return rc; |
| 2512 | } |
| 2513 | |
| 2514 | static void dyn_ts_switchover_complete(struct gsm_lchan *lchan) |
| 2515 | { |
| 2516 | enum gsm_phys_chan_config pchan_act; |
| 2517 | enum gsm_phys_chan_config pchan_was; |
| 2518 | struct gsm_bts_trx_ts *ts = lchan->ts; |
| 2519 | |
| 2520 | OSMO_ASSERT(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH); |
| 2521 | |
| 2522 | pchan_act = pchan_for_lchant(lchan->type); |
| 2523 | /* |
| 2524 | * Paranoia: do the types match? |
| 2525 | * In case of errors: we've received an act ack already, so what to do |
| 2526 | * about it? Logging the error should suffice for now. |
| 2527 | */ |
| 2528 | if (pchan_act != ts->dyn.pchan_want) |
| 2529 | LOGP(DRSL, LOGL_ERROR, |
| 2530 | "%s Requested transition does not match lchan type %s\n", |
| 2531 | gsm_ts_and_pchan_name(ts), |
Neels Hofmeyr | 8ceb9de | 2016-08-24 16:57:31 +0200 | [diff] [blame] | 2532 | gsm_lchant_name(lchan->type)); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2533 | |
| 2534 | pchan_was = ts->dyn.pchan_is; |
| 2535 | ts->dyn.pchan_is = ts->dyn.pchan_want = pchan_act; |
| 2536 | |
Neels Hofmeyr | ba1eab2 | 2016-08-24 14:42:58 +0200 | [diff] [blame] | 2537 | if (pchan_was != ts->dyn.pchan_is) |
| 2538 | LOGP(DRSL, LOGL_INFO, "%s switchover from %s complete.\n", |
| 2539 | gsm_ts_and_pchan_name(ts), gsm_pchan_name(pchan_was)); |
Neels Hofmeyr | 6c5f278 | 2016-07-23 19:45:15 +0200 | [diff] [blame] | 2540 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2541 | |
| 2542 | /* Entry-point where L2 RSL from BTS enters */ |
| 2543 | int abis_rsl_rcvmsg(struct msgb *msg) |
| 2544 | { |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2545 | struct abis_rsl_common_hdr *rslh; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2546 | int rc = 0; |
| 2547 | |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2548 | if (!msg) { |
| 2549 | DEBUGP(DRSL, "Empty RSL msg?..\n"); |
| 2550 | return -1; |
| 2551 | } |
| 2552 | |
| 2553 | if (msgb_l2len(msg) < sizeof(*rslh)) { |
| 2554 | DEBUGP(DRSL, "Truncated RSL message with l2len: %u\n", msgb_l2len(msg)); |
Harald Welte | ce80726 | 2012-05-31 20:22:34 +0200 | [diff] [blame] | 2555 | msgb_free(msg); |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2556 | return -1; |
| 2557 | } |
| 2558 | |
| 2559 | rslh = msgb_l2(msg); |
| 2560 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2561 | switch (rslh->msg_discr & 0xfe) { |
| 2562 | case ABIS_RSL_MDISC_RLL: |
| 2563 | rc = abis_rsl_rx_rll(msg); |
| 2564 | break; |
| 2565 | case ABIS_RSL_MDISC_DED_CHAN: |
| 2566 | rc = abis_rsl_rx_dchan(msg); |
| 2567 | break; |
| 2568 | case ABIS_RSL_MDISC_COM_CHAN: |
| 2569 | rc = abis_rsl_rx_cchan(msg); |
| 2570 | break; |
| 2571 | case ABIS_RSL_MDISC_TRX: |
| 2572 | rc = abis_rsl_rx_trx(msg); |
| 2573 | break; |
| 2574 | case ABIS_RSL_MDISC_LOC: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2575 | LOGP(DRSL, LOGL_NOTICE, "unimplemented RSL msg disc 0x%02x\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2576 | rslh->msg_discr); |
| 2577 | break; |
| 2578 | case ABIS_RSL_MDISC_IPACCESS: |
| 2579 | rc = abis_rsl_rx_ipacc(msg); |
| 2580 | break; |
| 2581 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2582 | LOGP(DRSL, LOGL_NOTICE, "unknown RSL message discriminator " |
| 2583 | "0x%02x\n", rslh->msg_discr); |
Harald Welte | ce80726 | 2012-05-31 20:22:34 +0200 | [diff] [blame] | 2584 | rc = -EINVAL; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2585 | } |
| 2586 | msgb_free(msg); |
| 2587 | return rc; |
| 2588 | } |
| 2589 | |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2590 | int rsl_sms_cb_command(struct gsm_bts *bts, uint8_t chan_number, |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2591 | struct rsl_ie_cb_cmd_type cb_command, |
| 2592 | const uint8_t *data, int len) |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2593 | { |
| 2594 | struct abis_rsl_dchan_hdr *dh; |
| 2595 | struct msgb *cb_cmd; |
| 2596 | |
| 2597 | cb_cmd = rsl_msgb_alloc(); |
| 2598 | if (!cb_cmd) |
| 2599 | return -1; |
| 2600 | |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2601 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(cb_cmd, sizeof(*dh)); |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2602 | init_dchan_hdr(dh, RSL_MT_SMS_BC_CMD); |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2603 | dh->c.msg_discr = ABIS_RSL_MDISC_COM_CHAN; |
| 2604 | dh->chan_nr = chan_number; /* TODO: check the chan config */ |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2605 | |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2606 | msgb_tv_put(cb_cmd, RSL_IE_CB_CMD_TYPE, *(uint8_t*)&cb_command); |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2607 | msgb_tlv_put(cb_cmd, RSL_IE_SMSCB_MSG, len, data); |
| 2608 | |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2609 | cb_cmd->dst = bts->c0->rsl_link; |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2610 | |
| 2611 | return abis_rsl_sendmsg(cb_cmd); |
| 2612 | } |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2613 | |
| 2614 | int rsl_nokia_si_begin(struct gsm_bts_trx *trx) |
| 2615 | { |
| 2616 | struct abis_rsl_common_hdr *ch; |
| 2617 | struct msgb *msg = rsl_msgb_alloc(); |
| 2618 | |
| 2619 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2620 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 2621 | ch->msg_type = 0x40; /* Nokia SI Begin */ |
| 2622 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2623 | msg->dst = trx->rsl_link; |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2624 | |
| 2625 | return abis_rsl_sendmsg(msg); |
| 2626 | } |
| 2627 | |
| 2628 | int rsl_nokia_si_end(struct gsm_bts_trx *trx) |
| 2629 | { |
| 2630 | struct abis_rsl_common_hdr *ch; |
| 2631 | struct msgb *msg = rsl_msgb_alloc(); |
| 2632 | |
| 2633 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2634 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 2635 | ch->msg_type = 0x41; /* Nokia SI End */ |
| 2636 | |
| 2637 | msgb_tv_put(msg, 0xFD, 0x00); /* Nokia Pagemode Info, No paging reorganisation required */ |
| 2638 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2639 | msg->dst = trx->rsl_link; |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2640 | |
| 2641 | return abis_rsl_sendmsg(msg); |
| 2642 | } |
| 2643 | |
| 2644 | int rsl_bs_power_control(struct gsm_bts_trx *trx, uint8_t channel, uint8_t reduction) |
| 2645 | { |
| 2646 | struct abis_rsl_common_hdr *ch; |
| 2647 | struct msgb *msg = rsl_msgb_alloc(); |
| 2648 | |
| 2649 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2650 | ch->msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
| 2651 | ch->msg_type = RSL_MT_BS_POWER_CONTROL; |
| 2652 | |
| 2653 | msgb_tv_put(msg, RSL_IE_CHAN_NR, channel); |
| 2654 | msgb_tv_put(msg, RSL_IE_BS_POWER, reduction); /* reduction in 2dB steps */ |
| 2655 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2656 | msg->dst = trx->rsl_link; |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2657 | |
| 2658 | return abis_rsl_sendmsg(msg); |
| 2659 | } |
Holger Hans Peter Freyther | e38af68 | 2011-12-27 22:24:17 +0100 | [diff] [blame] | 2660 | |
| 2661 | /** |
| 2662 | * Release all allocated SAPIs starting from @param start and |
| 2663 | * release them with the given release mode. Once the release |
| 2664 | * confirmation arrives it will be attempted to release the |
| 2665 | * the RF channel. |
| 2666 | */ |
| 2667 | int rsl_release_sapis_from(struct gsm_lchan *lchan, int start, |
| 2668 | enum rsl_rel_mode release_mode) |
| 2669 | { |
| 2670 | int no_sapi = 1; |
| 2671 | int sapi; |
| 2672 | |
| 2673 | for (sapi = start; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 2674 | uint8_t link_id; |
| 2675 | if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) |
| 2676 | continue; |
| 2677 | |
| 2678 | link_id = sapi; |
| 2679 | if (lchan->type == GSM_LCHAN_TCH_F || lchan->type == GSM_LCHAN_TCH_H) |
| 2680 | link_id |= 0x40; |
| 2681 | rsl_release_request(lchan, link_id, release_mode); |
| 2682 | no_sapi = 0; |
| 2683 | } |
| 2684 | |
| 2685 | return no_sapi; |
| 2686 | } |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 2687 | |
| 2688 | int rsl_start_t3109(struct gsm_lchan *lchan) |
| 2689 | { |
| 2690 | struct gsm_bts *bts = lchan->ts->trx->bts; |
| 2691 | |
| 2692 | /* Disabled, mostly legacy code */ |
| 2693 | if (bts->network->T3109 == 0) |
| 2694 | return -1; |
| 2695 | |
| 2696 | lchan->T3109.cb = t3109_expired; |
| 2697 | lchan->T3109.data = lchan; |
| 2698 | osmo_timer_schedule(&lchan->T3109, bts->network->T3109, 0); |
| 2699 | return 0; |
| 2700 | } |
Holger Hans Peter Freyther | c63cb86 | 2012-12-25 23:45:14 +0100 | [diff] [blame] | 2701 | |
| 2702 | /** |
| 2703 | * \brief directly RF Channel Release the lchan |
| 2704 | * |
| 2705 | * When no SAPI was allocated, directly release the logical channel. This |
| 2706 | * should only be called from chan_alloc.c on channel release handling. In |
| 2707 | * case no SAPI was established the RF Channel can be directly released, |
| 2708 | */ |
| 2709 | int rsl_direct_rf_release(struct gsm_lchan *lchan) |
| 2710 | { |
| 2711 | int i; |
| 2712 | for (i = 0; i < ARRAY_SIZE(lchan->sapis); ++i) { |
| 2713 | if (lchan->sapis[i] != LCHAN_SAPI_UNUSED) { |
| 2714 | LOGP(DRSL, LOGL_ERROR, "%s SAPI(%d) still allocated.\n", |
| 2715 | gsm_lchan_name(lchan), i); |
| 2716 | return -1; |
| 2717 | } |
| 2718 | } |
| 2719 | |
| 2720 | /* Now release it */ |
| 2721 | return rsl_rf_chan_release(lchan, 0, SACCH_NONE); |
| 2722 | } |