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> |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 38 | #include <openbsc/paging.h> |
| 39 | #include <openbsc/signal.h> |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 40 | #include <openbsc/meas_rep.h> |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 41 | #include <openbsc/rtp_proxy.h> |
Pablo Neira Ayuso | 42e41df | 2011-08-17 22:44:07 +0200 | [diff] [blame] | 42 | #include <osmocom/abis/e1_input.h> |
Pablo Neira Ayuso | dd5fff4 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 43 | #include <osmocom/gsm/rsl.h> |
Pablo Neira Ayuso | dd5fff4 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 44 | #include <osmocom/core/talloc.h> |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 45 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 46 | #define RSL_ALLOC_SIZE 1024 |
| 47 | #define RSL_ALLOC_HEADROOM 128 |
| 48 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 49 | enum sacch_deact { |
| 50 | SACCH_NONE, |
| 51 | SACCH_DEACTIVATE, |
| 52 | }; |
| 53 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 54 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan); |
Holger Hans Peter Freyther | da9fb8c | 2014-04-06 12:21:05 +0200 | [diff] [blame] | 55 | static void error_timeout_cb(void *data); |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 56 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 57 | static void send_lchan_signal(int sig_no, struct gsm_lchan *lchan, |
| 58 | struct gsm_meas_rep *resp) |
| 59 | { |
| 60 | struct lchan_signal_data sig; |
| 61 | sig.lchan = lchan; |
| 62 | sig.mr = resp; |
Pablo Neira Ayuso | ef717c6 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 63 | osmo_signal_dispatch(SS_LCHAN, sig_no, &sig); |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 64 | } |
| 65 | |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 66 | static void do_lchan_free(struct gsm_lchan *lchan) |
| 67 | { |
Holger Hans Peter Freyther | da9fb8c | 2014-04-06 12:21:05 +0200 | [diff] [blame] | 68 | /* We start the error timer to make the channel available again */ |
| 69 | if (lchan->state == LCHAN_S_REL_ERR) { |
| 70 | lchan->error_timer.data = lchan; |
| 71 | lchan->error_timer.cb = error_timeout_cb; |
| 72 | osmo_timer_schedule(&lchan->error_timer, |
| 73 | lchan->ts->trx->bts->network->T3111 + 2, 0); |
| 74 | } else { |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 75 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | da9fb8c | 2014-04-06 12:21:05 +0200 | [diff] [blame] | 76 | } |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 77 | lchan_free(lchan); |
| 78 | } |
| 79 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 80 | static uint8_t mdisc_by_msgtype(uint8_t msg_type) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 81 | { |
| 82 | /* mask off the transparent bit ? */ |
| 83 | msg_type &= 0xfe; |
| 84 | |
| 85 | if ((msg_type & 0xf0) == 0x00) |
| 86 | return ABIS_RSL_MDISC_RLL; |
| 87 | if ((msg_type & 0xf0) == 0x10) { |
| 88 | if (msg_type >= 0x19 && msg_type <= 0x22) |
| 89 | return ABIS_RSL_MDISC_TRX; |
| 90 | else |
| 91 | return ABIS_RSL_MDISC_COM_CHAN; |
| 92 | } |
| 93 | if ((msg_type & 0xe0) == 0x20) |
| 94 | return ABIS_RSL_MDISC_DED_CHAN; |
| 95 | |
| 96 | return ABIS_RSL_MDISC_LOC; |
| 97 | } |
| 98 | |
| 99 | 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] | 100 | uint8_t msg_type) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 101 | { |
| 102 | dh->c.msg_discr = mdisc_by_msgtype(msg_type); |
| 103 | dh->c.msg_type = msg_type; |
| 104 | dh->ie_chan = RSL_IE_CHAN_NR; |
| 105 | } |
| 106 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 107 | /* determine logical channel based on TRX and channel number IE */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 108 | 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] | 109 | { |
| 110 | struct gsm_lchan *lchan; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 111 | uint8_t ts_nr = chan_nr & 0x07; |
| 112 | uint8_t cbits = chan_nr >> 3; |
| 113 | uint8_t lch_idx; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 114 | struct gsm_bts_trx_ts *ts = &trx->ts[ts_nr]; |
| 115 | |
| 116 | if (cbits == 0x01) { |
| 117 | lch_idx = 0; /* TCH/F */ |
Harald Welte | 37884ed | 2009-10-24 10:25:50 +0200 | [diff] [blame] | 118 | if (ts->pchan != GSM_PCHAN_TCH_F && |
| 119 | ts->pchan != GSM_PCHAN_PDCH && |
| 120 | ts->pchan != GSM_PCHAN_TCH_F_PDCH) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 121 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 122 | chan_nr, ts->pchan); |
| 123 | } else if ((cbits & 0x1e) == 0x02) { |
| 124 | lch_idx = cbits & 0x1; /* TCH/H */ |
| 125 | if (ts->pchan != GSM_PCHAN_TCH_H) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 126 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 127 | chan_nr, ts->pchan); |
| 128 | } else if ((cbits & 0x1c) == 0x04) { |
| 129 | lch_idx = cbits & 0x3; /* SDCCH/4 */ |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 130 | if (ts->pchan != GSM_PCHAN_CCCH_SDCCH4 && |
| 131 | ts->pchan != GSM_PCHAN_CCCH_SDCCH4_CBCH) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 132 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 133 | chan_nr, ts->pchan); |
| 134 | } else if ((cbits & 0x18) == 0x08) { |
| 135 | lch_idx = cbits & 0x7; /* SDCCH/8 */ |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 136 | if (ts->pchan != GSM_PCHAN_SDCCH8_SACCH8C && |
| 137 | ts->pchan != GSM_PCHAN_SDCCH8_SACCH8C_CBCH) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 138 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 139 | chan_nr, ts->pchan); |
| 140 | } else if (cbits == 0x10 || cbits == 0x11 || cbits == 0x12) { |
| 141 | lch_idx = 0; |
| 142 | if (ts->pchan != GSM_PCHAN_CCCH && |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 143 | ts->pchan != GSM_PCHAN_CCCH_SDCCH4 && |
| 144 | ts->pchan != GSM_PCHAN_CCCH_SDCCH4_CBCH) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 145 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 146 | chan_nr, ts->pchan); |
| 147 | /* FIXME: we should not return first sdcch4 !!! */ |
| 148 | } else { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 149 | LOGP(DRSL, LOGL_ERROR, "unknown chan_nr=0x%02x\n", chan_nr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 150 | return NULL; |
| 151 | } |
| 152 | |
| 153 | lchan = &ts->lchan[lch_idx]; |
Harald Welte | 51d2a59 | 2010-03-26 21:28:59 +0800 | [diff] [blame] | 154 | log_set_context(BSC_CTX_LCHAN, lchan); |
Holger Hans Peter Freyther | 1a95fa8 | 2010-06-28 15:47:12 +0800 | [diff] [blame] | 155 | if (lchan->conn) |
| 156 | log_set_context(BSC_CTX_SUBSCR, lchan->conn->subscr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 157 | |
| 158 | return lchan; |
| 159 | } |
| 160 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 161 | /* 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] | 162 | uint64_t str_to_imsi(const char *imsi_str) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 163 | { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 164 | uint64_t ret; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 165 | |
| 166 | ret = strtoull(imsi_str, NULL, 10); |
| 167 | |
| 168 | return ret; |
| 169 | } |
| 170 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 171 | static struct msgb *rsl_msgb_alloc(void) |
| 172 | { |
Harald Welte | 9cfc935 | 2009-06-26 19:39:35 +0200 | [diff] [blame] | 173 | return msgb_alloc_headroom(RSL_ALLOC_SIZE, RSL_ALLOC_HEADROOM, |
| 174 | "RSL"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | #define MACBLOCK_SIZE 23 |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 178 | 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] | 179 | { |
| 180 | memcpy(out, in, len); |
| 181 | |
| 182 | if (len < MACBLOCK_SIZE) |
| 183 | memset(out+len, 0x2b, MACBLOCK_SIZE-len); |
| 184 | } |
| 185 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 186 | /* Chapter 9.3.7: Encryption Information */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 187 | static int build_encr_info(uint8_t *out, struct gsm_lchan *lchan) |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 188 | { |
| 189 | *out++ = lchan->encr.alg_id & 0xff; |
| 190 | if (lchan->encr.key_len) |
| 191 | memcpy(out, lchan->encr.key, lchan->encr.key_len); |
| 192 | return lchan->encr.key_len + 1; |
| 193 | } |
| 194 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 195 | 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] | 196 | { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 197 | int i; |
| 198 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 199 | LOGPC(DRSL, lvl, "CAUSE=0x%02x(%s) ", |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 200 | cause_v[0], rsl_err_name(cause_v[0])); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 201 | for (i = 1; i < cause_len-1; i++) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 202 | LOGPC(DRSL, lvl, "%02x ", cause_v[i]); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 203 | } |
| 204 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 205 | static void lchan_act_tmr_cb(void *data) |
| 206 | { |
| 207 | struct gsm_lchan *lchan = data; |
| 208 | |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 209 | LOGP(DRSL, LOGL_ERROR, |
| 210 | "%s Timeout during activation. Marked as broken.\n", |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 211 | gsm_lchan_name(lchan)); |
| 212 | |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 213 | rsl_lchan_mark_broken(lchan, "activation timeout"); |
Daniel Willmann | 2731e73 | 2011-08-11 04:44:12 +0200 | [diff] [blame] | 214 | lchan_free(lchan); |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 215 | } |
| 216 | |
| 217 | static void lchan_deact_tmr_cb(void *data) |
| 218 | { |
| 219 | struct gsm_lchan *lchan = data; |
| 220 | |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 221 | LOGP(DRSL, LOGL_ERROR, |
| 222 | "%s Timeout during deactivation! Marked as broken.\n", |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 223 | gsm_lchan_name(lchan)); |
| 224 | |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 225 | rsl_lchan_mark_broken(lchan, "de-activation timeout"); |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 226 | lchan_free(lchan); |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 230 | /* 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] | 231 | int rsl_bcch_info(struct gsm_bts_trx *trx, uint8_t type, |
| 232 | const uint8_t *data, int len) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 233 | { |
| 234 | struct abis_rsl_dchan_hdr *dh; |
| 235 | struct msgb *msg = rsl_msgb_alloc(); |
| 236 | |
| 237 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof*dh); |
| 238 | init_dchan_hdr(dh, RSL_MT_BCCH_INFO); |
| 239 | dh->chan_nr = RSL_CHAN_BCCH; |
| 240 | |
| 241 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 242 | msgb_tlv_put(msg, RSL_IE_FULL_BCCH_INFO, len, data); |
| 243 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 244 | msg->dst = trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 245 | |
| 246 | return abis_rsl_sendmsg(msg); |
| 247 | } |
| 248 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 249 | int rsl_sacch_filling(struct gsm_bts_trx *trx, uint8_t type, |
| 250 | const uint8_t *data, int len) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 251 | { |
| 252 | struct abis_rsl_common_hdr *ch; |
| 253 | struct msgb *msg = rsl_msgb_alloc(); |
| 254 | |
| 255 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 256 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 257 | ch->msg_type = RSL_MT_SACCH_FILL; |
| 258 | |
| 259 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 260 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
| 261 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 262 | msg->dst = trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 263 | |
| 264 | return abis_rsl_sendmsg(msg); |
| 265 | } |
| 266 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 267 | int rsl_sacch_info_modify(struct gsm_lchan *lchan, uint8_t type, |
| 268 | const uint8_t *data, int len) |
Harald Welte | 10b7d8f | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 269 | { |
| 270 | struct abis_rsl_dchan_hdr *dh; |
| 271 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 272 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 10b7d8f | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 273 | |
| 274 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 275 | init_dchan_hdr(dh, RSL_MT_SACCH_INFO_MODIFY); |
| 276 | dh->chan_nr = chan_nr; |
| 277 | |
| 278 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 279 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
| 280 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 281 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 10b7d8f | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 282 | |
| 283 | return abis_rsl_sendmsg(msg); |
| 284 | } |
| 285 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 286 | int rsl_chan_bs_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int db) |
| 287 | { |
| 288 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 289 | struct msgb *msg; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 290 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 291 | |
| 292 | db = abs(db); |
| 293 | if (db > 30) |
| 294 | return -EINVAL; |
| 295 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 296 | msg = rsl_msgb_alloc(); |
| 297 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 298 | lchan->bs_power = db/2; |
| 299 | if (fpc) |
| 300 | lchan->bs_power |= 0x10; |
| 301 | |
| 302 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 303 | init_dchan_hdr(dh, RSL_MT_BS_POWER_CONTROL); |
| 304 | dh->chan_nr = chan_nr; |
| 305 | |
| 306 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 307 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 308 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 309 | |
| 310 | return abis_rsl_sendmsg(msg); |
| 311 | } |
| 312 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 313 | int rsl_chan_ms_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int dbm) |
| 314 | { |
| 315 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 316 | struct msgb *msg; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 317 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 318 | int ctl_lvl; |
| 319 | |
Harald Welte | c4dcda0 | 2009-08-09 14:45:18 +0200 | [diff] [blame] | 320 | ctl_lvl = ms_pwr_ctl_lvl(lchan->ts->trx->bts->band, dbm); |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 321 | if (ctl_lvl < 0) |
| 322 | return ctl_lvl; |
| 323 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 324 | msg = rsl_msgb_alloc(); |
| 325 | |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 326 | lchan->ms_power = ctl_lvl; |
| 327 | |
| 328 | if (fpc) |
| 329 | lchan->ms_power |= 0x20; |
| 330 | |
| 331 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 332 | init_dchan_hdr(dh, RSL_MT_MS_POWER_CONTROL); |
| 333 | dh->chan_nr = chan_nr; |
| 334 | |
| 335 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 336 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 337 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 91afe4c | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 338 | |
| 339 | return abis_rsl_sendmsg(msg); |
| 340 | } |
| 341 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 342 | static int channel_mode_from_lchan(struct rsl_ie_chan_mode *cm, |
| 343 | struct gsm_lchan *lchan) |
| 344 | { |
Holger Hans Peter Freyther | fad7365 | 2013-03-09 17:50:10 +0100 | [diff] [blame] | 345 | memset(cm, 0, sizeof(*cm)); |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 346 | |
| 347 | /* FIXME: what to do with data calls ? */ |
Holger Hans Peter Freyther | 21d63ff | 2010-09-06 09:25:48 +0800 | [diff] [blame] | 348 | if (lchan->ts->trx->bts->network->dtx_enabled) |
| 349 | cm->dtx_dtu = 0x03; |
| 350 | else |
| 351 | cm->dtx_dtu = 0x00; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 352 | |
| 353 | /* set TCH Speech/Data */ |
| 354 | cm->spd_ind = lchan->rsl_cmode; |
| 355 | |
Harald Welte | 951e351 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 356 | if (lchan->rsl_cmode == RSL_CMOD_SPD_SIGN && |
| 357 | lchan->tch_mode != GSM48_CMODE_SIGN) |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 358 | LOGP(DRSL, LOGL_ERROR, "unsupported: rsl_mode == signalling, " |
Harald Welte | 951e351 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 359 | "but tch_mode != signalling\n"); |
| 360 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 361 | switch (lchan->type) { |
| 362 | case GSM_LCHAN_SDCCH: |
| 363 | cm->chan_rt = RSL_CMOD_CRT_SDCCH; |
| 364 | break; |
| 365 | case GSM_LCHAN_TCH_F: |
| 366 | cm->chan_rt = RSL_CMOD_CRT_TCH_Bm; |
| 367 | break; |
| 368 | case GSM_LCHAN_TCH_H: |
| 369 | cm->chan_rt = RSL_CMOD_CRT_TCH_Lm; |
| 370 | break; |
| 371 | case GSM_LCHAN_NONE: |
| 372 | case GSM_LCHAN_UNKNOWN: |
| 373 | default: |
| 374 | return -EINVAL; |
| 375 | } |
| 376 | |
| 377 | switch (lchan->tch_mode) { |
| 378 | case GSM48_CMODE_SIGN: |
| 379 | cm->chan_rate = 0; |
| 380 | break; |
| 381 | case GSM48_CMODE_SPEECH_V1: |
| 382 | cm->chan_rate = RSL_CMOD_SP_GSM1; |
| 383 | break; |
| 384 | case GSM48_CMODE_SPEECH_EFR: |
| 385 | cm->chan_rate = RSL_CMOD_SP_GSM2; |
| 386 | break; |
| 387 | case GSM48_CMODE_SPEECH_AMR: |
| 388 | cm->chan_rate = RSL_CMOD_SP_GSM3; |
| 389 | break; |
| 390 | case GSM48_CMODE_DATA_14k5: |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 391 | case GSM48_CMODE_DATA_12k0: |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 392 | case GSM48_CMODE_DATA_6k0: |
Harald Welte | e75a47d | 2012-08-24 15:33:56 +0200 | [diff] [blame] | 393 | switch (lchan->csd_mode) { |
| 394 | case LCHAN_CSD_M_NT: |
| 395 | /* non-transparent CSD with RLP */ |
| 396 | switch (lchan->tch_mode) { |
| 397 | case GSM48_CMODE_DATA_14k5: |
| 398 | cm->chan_rate = RSL_CMOD_SP_NT_14k5; |
| 399 | break; |
| 400 | case GSM48_CMODE_DATA_12k0: |
| 401 | cm->chan_rate = RSL_CMOD_SP_NT_12k0; |
| 402 | break; |
| 403 | case GSM48_CMODE_DATA_6k0: |
| 404 | cm->chan_rate = RSL_CMOD_SP_NT_6k0; |
| 405 | break; |
| 406 | default: |
| 407 | return -EINVAL; |
| 408 | } |
| 409 | break; |
| 410 | /* transparent data services below */ |
| 411 | case LCHAN_CSD_M_T_1200_75: |
| 412 | cm->chan_rate = RSL_CMOD_CSD_T_1200_75; |
| 413 | break; |
| 414 | case LCHAN_CSD_M_T_600: |
| 415 | cm->chan_rate = RSL_CMOD_CSD_T_600; |
| 416 | break; |
| 417 | case LCHAN_CSD_M_T_1200: |
| 418 | cm->chan_rate = RSL_CMOD_CSD_T_1200; |
| 419 | break; |
| 420 | case LCHAN_CSD_M_T_2400: |
| 421 | cm->chan_rate = RSL_CMOD_CSD_T_2400; |
| 422 | break; |
| 423 | case LCHAN_CSD_M_T_9600: |
| 424 | cm->chan_rate = RSL_CMOD_CSD_T_9600; |
| 425 | break; |
| 426 | case LCHAN_CSD_M_T_14400: |
| 427 | cm->chan_rate = RSL_CMOD_CSD_T_14400; |
| 428 | break; |
| 429 | case LCHAN_CSD_M_T_29000: |
| 430 | cm->chan_rate = RSL_CMOD_CSD_T_29000; |
| 431 | break; |
| 432 | case LCHAN_CSD_M_T_32000: |
| 433 | cm->chan_rate = RSL_CMOD_CSD_T_32000; |
| 434 | break; |
| 435 | default: |
| 436 | return -EINVAL; |
| 437 | } |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 438 | default: |
| 439 | return -EINVAL; |
| 440 | } |
| 441 | |
| 442 | return 0; |
| 443 | } |
| 444 | |
Holger Hans Peter Freyther | ae27c1b | 2015-08-20 19:32:46 +0200 | [diff] [blame] | 445 | static void mr_config_for_bts(struct gsm_lchan *lchan, struct msgb *msg) |
| 446 | { |
| 447 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) |
| 448 | msgb_tlv_put(msg, RSL_IE_MR_CONFIG, lchan->mr_bts_lv[0], |
| 449 | lchan->mr_bts_lv + 1); |
| 450 | } |
| 451 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 452 | /* Chapter 8.4.1 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 453 | 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] | 454 | uint8_t ho_ref) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 455 | { |
| 456 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 457 | struct msgb *msg; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 458 | int rc; |
Harald Welte | dea24e9 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 459 | uint8_t *len; |
Andreas Eversberg | 3ca9af3 | 2013-10-11 12:55:35 +0200 | [diff] [blame] | 460 | uint8_t ta; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 461 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 462 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 463 | struct rsl_ie_chan_mode cm; |
laforge | f723cf0 | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 464 | struct gsm48_chan_desc cd; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 465 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 466 | rc = channel_mode_from_lchan(&cm, lchan); |
| 467 | if (rc < 0) |
| 468 | return rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 469 | |
Andreas Eversberg | 3ca9af3 | 2013-10-11 12:55:35 +0200 | [diff] [blame] | 470 | ta = lchan->rqd_ta; |
| 471 | |
| 472 | /* BS11 requires TA shifted by 2 bits */ |
| 473 | if (lchan->ts->trx->bts->type == GSM_BTS_TYPE_BS11) |
| 474 | ta <<= 2; |
| 475 | |
Holger Hans Peter Freyther | 11b0140 | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 476 | memset(&cd, 0, sizeof(cd)); |
laforge | f723cf0 | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 477 | gsm48_lchan2chan_desc(&cd, lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 478 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 479 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 480 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 481 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 482 | dh->chan_nr = chan_nr; |
| 483 | |
| 484 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 485 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 486 | (uint8_t *) &cm); |
Holger Hans Peter Freyther | 11b0140 | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 487 | |
| 488 | /* |
| 489 | * The Channel Identification is needed for Phase1 phones |
| 490 | * and it contains the GSM48 Channel Description and the |
| 491 | * Mobile Allocation. The GSM 08.58 asks for the Mobile |
| 492 | * Allocation to have a length of zero. We are using the |
| 493 | * msgb_l3len to calculate the length of both messages. |
| 494 | */ |
laforge | f723cf0 | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 495 | msgb_v_put(msg, RSL_IE_CHAN_IDENT); |
Harald Welte | dea24e9 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 496 | len = msgb_put(msg, 1); |
Dieter Spaar | 18a55f6 | 2011-07-27 23:40:33 +0200 | [diff] [blame] | 497 | 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] | 498 | |
| 499 | if (lchan->ts->hopping.enabled) |
| 500 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, lchan->ts->hopping.ma_len, |
| 501 | lchan->ts->hopping.ma_data); |
| 502 | else |
| 503 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, 0, NULL); |
Holger Hans Peter Freyther | 11b0140 | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 504 | |
| 505 | /* update the calculated size */ |
| 506 | msg->l3h = len + 1; |
| 507 | *len = msgb_l3len(msg); |
| 508 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 509 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 510 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 511 | rc = build_encr_info(encr_info, lchan); |
| 512 | if (rc > 0) |
| 513 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 514 | } |
| 515 | |
Harald Welte | b90d7bd | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 516 | switch (act_type) { |
| 517 | case RSL_ACT_INTER_ASYNC: |
| 518 | case RSL_ACT_INTER_SYNC: |
| 519 | msgb_tv_put(msg, RSL_IE_HANDO_REF, ho_ref); |
| 520 | break; |
| 521 | default: |
| 522 | break; |
| 523 | } |
| 524 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 525 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 526 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 527 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
Holger Hans Peter Freyther | ae27c1b | 2015-08-20 19:32:46 +0200 | [diff] [blame] | 528 | mr_config_for_bts(lchan, msg); |
Holger Hans Peter Freyther | 6fe8ab9 | 2010-01-28 04:45:05 +0100 | [diff] [blame] | 529 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 530 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 531 | |
| 532 | return abis_rsl_sendmsg(msg); |
| 533 | } |
| 534 | |
Harald Welte | 8e77049 | 2009-07-29 11:38:15 +0200 | [diff] [blame] | 535 | /* Chapter 8.4.9: Modify channel mode on BTS side */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 536 | int rsl_chan_mode_modify_req(struct gsm_lchan *lchan) |
| 537 | { |
| 538 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 539 | struct msgb *msg; |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 540 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 541 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 542 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 543 | struct rsl_ie_chan_mode cm; |
| 544 | |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 545 | rc = channel_mode_from_lchan(&cm, lchan); |
| 546 | if (rc < 0) |
| 547 | return rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 548 | |
Harald Welte | ed83184 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 549 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 550 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 551 | init_dchan_hdr(dh, RSL_MT_MODE_MODIFY_REQ); |
| 552 | dh->chan_nr = chan_nr; |
| 553 | |
| 554 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 555 | (uint8_t *) &cm); |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 556 | |
| 557 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 558 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 559 | rc = build_encr_info(encr_info, lchan); |
| 560 | if (rc > 0) |
| 561 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 562 | } |
| 563 | |
Holger Hans Peter Freyther | ae27c1b | 2015-08-20 19:32:46 +0200 | [diff] [blame] | 564 | mr_config_for_bts(lchan, msg); |
Holger Hans Peter Freyther | 3cce58f | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 565 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 566 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 567 | |
| 568 | return abis_rsl_sendmsg(msg); |
| 569 | } |
| 570 | |
| 571 | /* Chapter 8.4.6: Send the encryption command with given L3 info */ |
| 572 | int rsl_encryption_cmd(struct msgb *msg) |
| 573 | { |
| 574 | struct abis_rsl_dchan_hdr *dh; |
| 575 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 576 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 577 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
| 578 | uint8_t l3_len = msg->len; |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 579 | int rc; |
| 580 | |
| 581 | /* First push the L3 IE tag and length */ |
| 582 | msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len); |
| 583 | |
| 584 | /* then the link identifier (SAPI0, main sign link) */ |
| 585 | msgb_tv_push(msg, RSL_IE_LINK_IDENT, 0); |
| 586 | |
| 587 | /* then encryption information */ |
| 588 | rc = build_encr_info(encr_info, lchan); |
| 589 | if (rc <= 0) |
| 590 | return rc; |
| 591 | msgb_tlv_push(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 592 | |
| 593 | /* and finally the DCHAN header */ |
| 594 | dh = (struct abis_rsl_dchan_hdr *) msgb_push(msg, sizeof(*dh)); |
| 595 | init_dchan_hdr(dh, RSL_MT_ENCR_CMD); |
| 596 | dh->chan_nr = chan_nr; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 597 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 598 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 599 | |
| 600 | return abis_rsl_sendmsg(msg); |
| 601 | } |
| 602 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 603 | /* 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] | 604 | int rsl_deact_sacch(struct gsm_lchan *lchan) |
| 605 | { |
| 606 | struct abis_rsl_dchan_hdr *dh; |
| 607 | struct msgb *msg = rsl_msgb_alloc(); |
| 608 | |
| 609 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 610 | init_dchan_hdr(dh, RSL_MT_DEACTIVATE_SACCH); |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 611 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 612 | |
| 613 | msg->lchan = lchan; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 614 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 615 | |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 616 | DEBUGP(DRSL, "%s DEACTivate SACCH CMD\n", gsm_lchan_name(lchan)); |
Harald Welte | afe3c23 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 617 | |
| 618 | return abis_rsl_sendmsg(msg); |
| 619 | } |
| 620 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 621 | static void error_timeout_cb(void *data) |
| 622 | { |
| 623 | struct gsm_lchan *lchan = data; |
| 624 | if (lchan->state != LCHAN_S_REL_ERR) { |
| 625 | LOGP(DRSL, LOGL_ERROR, "%s error timeout but not in error state: %d\n", |
| 626 | gsm_lchan_name(lchan), lchan->state); |
| 627 | return; |
| 628 | } |
| 629 | |
| 630 | /* go back to the none state */ |
Harald Welte | fddaba5 | 2012-11-13 04:26:22 +0100 | [diff] [blame] | 631 | 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] | 632 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 633 | } |
| 634 | |
Harald Welte | 08011e2 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 635 | static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan); |
| 636 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 637 | /* 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] | 638 | static int rsl_rf_chan_release(struct gsm_lchan *lchan, int error, |
| 639 | enum sacch_deact deact_sacch) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 640 | { |
| 641 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 642 | struct msgb *msg; |
Harald Welte | 08011e2 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 643 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 644 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 645 | /* Stop timers that should lead to a channel release */ |
| 646 | osmo_timer_del(&lchan->T3109); |
| 647 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 648 | if (lchan->state == LCHAN_S_REL_ERR) { |
| 649 | LOGP(DRSL, LOGL_NOTICE, "%s is in error state not sending release.\n", |
| 650 | gsm_lchan_name(lchan)); |
| 651 | return -1; |
| 652 | } |
| 653 | |
| 654 | msg = rsl_msgb_alloc(); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 655 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 656 | init_dchan_hdr(dh, RSL_MT_RF_CHAN_REL); |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 657 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 658 | |
| 659 | msg->lchan = lchan; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 660 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 661 | |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 662 | DEBUGP(DRSL, "%s RF Channel Release CMD due error %d\n", gsm_lchan_name(lchan), error); |
| 663 | |
| 664 | if (error) { |
Holger Hans Peter Freyther | 701a647 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 665 | /* |
| 666 | * FIXME: GSM 04.08 gives us two options for the abnormal |
| 667 | * chanel release. This can be either like in the non-existent |
| 668 | * sub-lcuase 3.5.1 or for the main signalling link deactivate |
| 669 | * the SACCH, start timer T3109 and consider the channel as |
| 670 | * released. |
| 671 | * |
| 672 | * This code is doing the later for all raido links and not |
| 673 | * only the main link. Right now all SAPIs are released on the |
| 674 | * local end, the SACCH will be de-activated and right now the |
| 675 | * T3111 will be started. First T3109 should be started and then |
| 676 | * the T3111. |
| 677 | * |
| 678 | * TODO: Move this out of the function. |
| 679 | */ |
| 680 | |
| 681 | /* |
| 682 | * sacch de-activate and "local end release" |
| 683 | */ |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 684 | if (deact_sacch == SACCH_DEACTIVATE) |
| 685 | rsl_deact_sacch(lchan); |
Holger Hans Peter Freyther | 701a647 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 686 | rsl_release_sapis_from(lchan, 0, RSL_REL_LOCAL_END); |
| 687 | |
| 688 | /* |
| 689 | * TODO: start T3109 now. |
| 690 | */ |
Holger Hans Peter Freyther | 456fb9d | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 691 | rsl_lchan_set_state(lchan, LCHAN_S_REL_ERR); |
Holger Hans Peter Freyther | 10ea12f | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 692 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 693 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 694 | /* Start another timer or assume the BTS sends a ACK/NACK? */ |
| 695 | lchan->act_timer.cb = lchan_deact_tmr_cb; |
| 696 | lchan->act_timer.data = lchan; |
| 697 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 698 | |
Harald Welte | 08011e2 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 699 | rc = abis_rsl_sendmsg(msg); |
| 700 | |
Harald Welte | 85a163c | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 701 | /* BTS will respond by RF CHAN REL ACK */ |
Harald Welte | 08011e2 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 702 | return rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 703 | } |
| 704 | |
Holger Hans Peter Freyther | 29eb19b | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 705 | /* |
| 706 | * Special handling for channel releases in the error case. |
| 707 | */ |
| 708 | static int rsl_rf_chan_release_err(struct gsm_lchan *lchan) |
| 709 | { |
| 710 | if (lchan->state != LCHAN_S_ACTIVE) |
| 711 | return 0; |
| 712 | return rsl_rf_chan_release(lchan, 1, SACCH_DEACTIVATE); |
| 713 | } |
| 714 | |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 715 | static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan) |
| 716 | { |
| 717 | |
| 718 | DEBUGP(DRSL, "%s RF CHANNEL RELEASE ACK\n", gsm_lchan_name(lchan)); |
| 719 | |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 720 | /* Stop all pending timers */ |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 721 | osmo_timer_del(&lchan->act_timer); |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 722 | osmo_timer_del(&lchan->T3111); |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 723 | |
Holger Hans Peter Freyther | 6f8ae69 | 2015-04-04 19:35:22 +0200 | [diff] [blame] | 724 | /* |
| 725 | * The BTS didn't respond within the timeout to our channel |
| 726 | * release request and we have marked the channel as broken. |
| 727 | * Now we do receive an ACK and let's be conservative. If it |
| 728 | * is a sysmoBTS we know that only one RF Channel Release ACK |
| 729 | * will be sent. So let's "repair" the channel. |
| 730 | */ |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 731 | if (lchan->state == LCHAN_S_BROKEN) { |
Holger Hans Peter Freyther | 6f8ae69 | 2015-04-04 19:35:22 +0200 | [diff] [blame] | 732 | int do_free = is_sysmobts_v2(lchan->ts->trx->bts); |
| 733 | LOGP(DRSL, LOGL_NOTICE, |
| 734 | "%s CHAN REL ACK for broken channel. %s.\n", |
| 735 | gsm_lchan_name(lchan), |
| 736 | do_free ? "Releasing it" : "Keeping it broken"); |
| 737 | if (do_free) |
| 738 | do_lchan_free(lchan); |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 739 | return 0; |
| 740 | } |
| 741 | |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 742 | if (lchan->state != LCHAN_S_REL_REQ && lchan->state != LCHAN_S_REL_ERR) |
| 743 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN REL ACK but state %s\n", |
| 744 | gsm_lchan_name(lchan), |
| 745 | gsm_lchans_name(lchan->state)); |
Holger Hans Peter Freyther | c22f299 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 746 | do_lchan_free(lchan); |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 747 | |
| 748 | return 0; |
| 749 | } |
| 750 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 751 | int rsl_paging_cmd(struct gsm_bts *bts, uint8_t paging_group, uint8_t len, |
| 752 | uint8_t *ms_ident, uint8_t chan_needed) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 753 | { |
| 754 | struct abis_rsl_dchan_hdr *dh; |
| 755 | struct msgb *msg = rsl_msgb_alloc(); |
| 756 | |
| 757 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 758 | init_dchan_hdr(dh, RSL_MT_PAGING_CMD); |
| 759 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 760 | |
| 761 | msgb_tv_put(msg, RSL_IE_PAGING_GROUP, paging_group); |
| 762 | msgb_tlv_put(msg, RSL_IE_MS_IDENTITY, len-2, ms_ident+2); |
| 763 | msgb_tv_put(msg, RSL_IE_CHAN_NEEDED, chan_needed); |
| 764 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 765 | msg->dst = bts->c0->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 766 | |
| 767 | return abis_rsl_sendmsg(msg); |
| 768 | } |
| 769 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 770 | int imsi_str2bcd(uint8_t *bcd_out, const char *str_in) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 771 | { |
| 772 | int i, len = strlen(str_in); |
| 773 | |
| 774 | for (i = 0; i < len; i++) { |
| 775 | int num = str_in[i] - 0x30; |
| 776 | if (num < 0 || num > 9) |
| 777 | return -1; |
| 778 | if (i % 2 == 0) |
| 779 | bcd_out[i/2] = num; |
| 780 | else |
| 781 | bcd_out[i/2] |= (num << 4); |
| 782 | } |
| 783 | |
| 784 | return 0; |
| 785 | } |
| 786 | |
| 787 | /* Chapter 8.5.6 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 788 | 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] | 789 | { |
| 790 | struct msgb *msg = rsl_msgb_alloc(); |
| 791 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 792 | uint8_t buf[MACBLOCK_SIZE]; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 793 | |
| 794 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 795 | init_dchan_hdr(dh, RSL_MT_IMMEDIATE_ASSIGN_CMD); |
| 796 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 797 | |
| 798 | switch (bts->type) { |
| 799 | case GSM_BTS_TYPE_BS11: |
| 800 | msgb_tlv_put(msg, RSL_IE_IMM_ASS_INFO, len, val); |
| 801 | break; |
| 802 | default: |
| 803 | /* If phase 2, construct a FULL_IMM_ASS_INFO */ |
| 804 | pad_macblock(buf, val, len); |
| 805 | msgb_tlv_put(msg, RSL_IE_FULL_IMM_ASS_INFO, MACBLOCK_SIZE, buf); |
| 806 | break; |
| 807 | } |
| 808 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 809 | msg->dst = bts->c0->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 810 | |
| 811 | return abis_rsl_sendmsg(msg); |
| 812 | } |
| 813 | |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 814 | /* Send Siemens specific MS RF Power Capability Indication */ |
Harald Welte | 1209075 | 2009-08-10 10:07:33 +0200 | [diff] [blame] | 815 | int rsl_siemens_mrpci(struct gsm_lchan *lchan, struct rsl_mrpci *mrpci) |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 816 | { |
| 817 | struct msgb *msg = rsl_msgb_alloc(); |
| 818 | struct abis_rsl_dchan_hdr *dh; |
| 819 | |
| 820 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 821 | init_dchan_hdr(dh, RSL_MT_SIEMENS_MRPCI); |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 822 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 823 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 824 | msgb_tv_put(msg, RSL_IE_SIEMENS_MRPCI, *(uint8_t *)mrpci); |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 825 | |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 826 | DEBUGP(DRSL, "%s TX Siemens MRPCI 0x%02x\n", |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 827 | gsm_lchan_name(lchan), *(uint8_t *)mrpci); |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 828 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 829 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 874a5b4 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 830 | |
Harald Welte | 4684e63 | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 831 | return abis_rsl_sendmsg(msg); |
| 832 | } |
| 833 | |
| 834 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 835 | /* Send "DATA REQUEST" message with given L3 Info payload */ |
| 836 | /* Chapter 8.3.1 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 837 | int rsl_data_request(struct msgb *msg, uint8_t link_id) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 838 | { |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 839 | if (msg->lchan == NULL) { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 840 | LOGP(DRSL, LOGL_ERROR, "cannot send DATA REQUEST to unknown lchan\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 841 | return -EINVAL; |
| 842 | } |
| 843 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 844 | 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] | 845 | link_id, 1); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 846 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 847 | msg->dst = msg->lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 848 | |
| 849 | return abis_rsl_sendmsg(msg); |
| 850 | } |
| 851 | |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 852 | /* Send "ESTABLISH REQUEST" message with given L3 Info payload */ |
| 853 | /* Chapter 8.3.1 */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 854 | int rsl_establish_request(struct gsm_lchan *lchan, uint8_t link_id) |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 855 | { |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 856 | struct msgb *msg; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 857 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 858 | msg = rsl_rll_simple(RSL_MT_EST_REQ, gsm_lchan2chan_nr(lchan), |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 859 | link_id, 0); |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 860 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 861 | |
Harald Welte | 17091bd | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 862 | DEBUGP(DRLL, "%s RSL RLL ESTABLISH REQ (link_id=0x%02x)\n", |
| 863 | gsm_lchan_name(lchan), link_id); |
| 864 | |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 865 | return abis_rsl_sendmsg(msg); |
| 866 | } |
| 867 | |
Andreas Eversberg | ac27b95 | 2013-12-05 13:25:06 +0100 | [diff] [blame] | 868 | static void rsl_handle_release(struct gsm_lchan *lchan); |
| 869 | |
| 870 | /* Special work handler to handle missing RSL_MT_REL_CONF message from |
| 871 | * Nokia InSite BTS */ |
| 872 | static void lchan_rel_work_cb(void *data) |
| 873 | { |
| 874 | struct gsm_lchan *lchan = data; |
| 875 | int sapi; |
| 876 | |
| 877 | for (sapi = 0; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 878 | if (lchan->sapis[sapi] == LCHAN_SAPI_REL) |
| 879 | lchan->sapis[sapi] = LCHAN_SAPI_UNUSED; |
| 880 | } |
| 881 | rsl_handle_release(lchan); |
| 882 | } |
| 883 | |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 884 | /* Chapter 8.3.7 Request the release of multiframe mode of RLL connection. |
| 885 | This is what higher layers should call. The BTS then responds with |
| 886 | RELEASE CONFIRM, which we in turn use to trigger RSL CHANNEL RELEASE, |
| 887 | which in turn is acknowledged by RSL CHANNEL RELEASE ACK, which calls |
| 888 | lchan_free() */ |
Holger Hans Peter Freyther | 2806c79 | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 889 | int rsl_release_request(struct gsm_lchan *lchan, uint8_t link_id, |
| 890 | enum rsl_rel_mode release_mode) |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 891 | { |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 892 | |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 893 | struct msgb *msg; |
| 894 | |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 895 | msg = rsl_rll_simple(RSL_MT_REL_REQ, gsm_lchan2chan_nr(lchan), |
Harald Welte | a22d36b | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 896 | link_id, 0); |
Holger Hans Peter Freyther | bcea9a7 | 2010-06-08 11:57:45 +0800 | [diff] [blame] | 897 | /* 0 is normal release, 1 is local end */ |
Holger Hans Peter Freyther | 2806c79 | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 898 | msgb_tv_put(msg, RSL_IE_RELEASE_MODE, release_mode); |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 899 | |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 900 | /* FIXME: start some timer in case we don't receive a REL ACK ? */ |
| 901 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 902 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 903 | |
Harald Welte | 17091bd | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 904 | 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] | 905 | gsm_lchan_name(lchan), link_id, release_mode); |
Harald Welte | 17091bd | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 906 | |
Andreas Eversberg | ac27b95 | 2013-12-05 13:25:06 +0100 | [diff] [blame] | 907 | abis_rsl_sendmsg(msg); |
| 908 | |
| 909 | /* Do not wait for Nokia BTS to send the confirm. */ |
| 910 | if (is_nokia_bts(lchan->ts->trx->bts) |
| 911 | && lchan->ts->trx->bts->nokia.no_loc_rel_cnf |
| 912 | && release_mode == RSL_REL_LOCAL_END) { |
| 913 | DEBUGP(DRLL, "Scheduling release, becasuse Nokia InSite BTS does not send a RELease CONFirm.\n"); |
| 914 | lchan->sapis[link_id & 0x7] = LCHAN_SAPI_REL; |
| 915 | lchan->rel_work.cb = lchan_rel_work_cb; |
| 916 | lchan->rel_work.data = lchan; |
| 917 | osmo_timer_schedule(&lchan->rel_work, 0, 0); |
| 918 | } |
| 919 | |
| 920 | return 0; |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 921 | } |
| 922 | |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 923 | int rsl_lchan_mark_broken(struct gsm_lchan *lchan, const char *reason) |
| 924 | { |
| 925 | lchan->state = LCHAN_S_BROKEN; |
| 926 | lchan->broken_reason = reason; |
| 927 | return 0; |
| 928 | } |
| 929 | |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 930 | int rsl_lchan_set_state(struct gsm_lchan *lchan, int state) |
| 931 | { |
| 932 | lchan->state = state; |
| 933 | return 0; |
| 934 | } |
| 935 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 936 | /* Chapter 8.4.2: Channel Activate Acknowledge */ |
| 937 | static int rsl_rx_chan_act_ack(struct msgb *msg) |
| 938 | { |
| 939 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 940 | |
| 941 | /* BTS has confirmed channel activation, we now need |
| 942 | * to assign the activated channel to the MS */ |
| 943 | if (rslh->ie_chan != RSL_IE_CHAN_NR) |
| 944 | return -EINVAL; |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 945 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 946 | osmo_timer_del(&msg->lchan->act_timer); |
| 947 | |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 948 | if (msg->lchan->state == LCHAN_S_BROKEN) { |
| 949 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK for broken channel.\n", |
| 950 | gsm_lchan_name(msg->lchan)); |
| 951 | return 0; |
| 952 | } |
| 953 | |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 954 | if (msg->lchan->state != LCHAN_S_ACT_REQ) |
Harald Welte | ab2534c | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 955 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK, but state %s\n", |
| 956 | gsm_lchan_name(msg->lchan), |
| 957 | gsm_lchans_name(msg->lchan->state)); |
Holger Hans Peter Freyther | 68914a0 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 958 | rsl_lchan_set_state(msg->lchan, LCHAN_S_ACTIVE); |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 959 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 960 | if (msg->lchan->rqd_ref) { |
| 961 | rsl_send_imm_assignment(msg->lchan); |
| 962 | talloc_free(msg->lchan->rqd_ref); |
| 963 | msg->lchan->rqd_ref = NULL; |
| 964 | msg->lchan->rqd_ta = 0; |
| 965 | } |
| 966 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 967 | send_lchan_signal(S_LCHAN_ACTIVATE_ACK, msg->lchan, NULL); |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 968 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 969 | return 0; |
| 970 | } |
| 971 | |
| 972 | /* Chapter 8.4.3: Channel Activate NACK */ |
| 973 | static int rsl_rx_chan_act_nack(struct msgb *msg) |
| 974 | { |
| 975 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 976 | struct tlv_parsed tp; |
| 977 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 978 | osmo_timer_del(&msg->lchan->act_timer); |
| 979 | |
Holger Hans Peter Freyther | bd5f21f | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 980 | if (msg->lchan->state == LCHAN_S_BROKEN) { |
| 981 | LOGP(DRSL, LOGL_ERROR, |
| 982 | "%s CHANNEL ACTIVATE NACK for broken channel.\n", |
| 983 | gsm_lchan_name(msg->lchan)); |
| 984 | return -1; |
| 985 | } |
| 986 | |
Daniel Willmann | 9e9d44c | 2011-08-11 04:54:23 +0200 | [diff] [blame] | 987 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL ACTIVATE NACK ", |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 988 | gsm_lchan_name(msg->lchan)); |
Harald Welte (local) | ed6d762 | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 989 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 990 | /* BTS has rejected channel activation ?!? */ |
| 991 | if (dh->ie_chan != RSL_IE_CHAN_NR) |
| 992 | return -EINVAL; |
| 993 | |
| 994 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 995 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 996 | const uint8_t *cause = TLVP_VAL(&tp, RSL_IE_CAUSE); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 997 | print_rsl_cause(LOGL_ERROR, cause, |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 998 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
Holger Hans Peter Freyther | 5149c17 | 2012-12-06 19:25:06 +0100 | [diff] [blame] | 999 | msg->lchan->error_cause = *cause; |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1000 | if (*cause != RSL_ERR_RCH_ALR_ACTV_ALLOC) { |
| 1001 | rsl_lchan_mark_broken(msg->lchan, "NACK on activation"); |
| 1002 | } else |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1003 | rsl_rf_chan_release(msg->lchan, 1, SACCH_DEACTIVATE); |
Daniel Willmann | 245ee03 | 2011-08-11 04:47:11 +0200 | [diff] [blame] | 1004 | |
Holger Hans Peter Freyther | 960adfe | 2014-12-28 12:08:28 +0100 | [diff] [blame] | 1005 | } else { |
| 1006 | rsl_lchan_mark_broken(msg->lchan, "NACK on activation no IE"); |
| 1007 | } |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1008 | |
Harald Welte (local) | ed6d762 | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 1009 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
| 1010 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1011 | send_lchan_signal(S_LCHAN_ACTIVATE_NACK, msg->lchan, NULL); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1012 | return 0; |
| 1013 | } |
| 1014 | |
| 1015 | /* Chapter 8.4.4: Connection Failure Indication */ |
| 1016 | static int rsl_rx_conn_fail(struct msgb *msg) |
| 1017 | { |
| 1018 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1019 | struct tlv_parsed tp; |
| 1020 | |
Holger Hans Peter Freyther | de4da29 | 2014-04-19 16:45:36 +0200 | [diff] [blame] | 1021 | LOGP(DRSL, LOGL_NOTICE, "%s CONNECTION FAIL: RELEASING state %s ", |
| 1022 | gsm_lchan_name(msg->lchan), |
| 1023 | gsm_lchans_name(msg->lchan->state)); |
| 1024 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1025 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1026 | |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1027 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1028 | print_rsl_cause(LOGL_NOTICE, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1029 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1030 | |
Harald Welte (local) | 4bd7664 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 1031 | LOGPC(DRSL, LOGL_NOTICE, "\n"); |
Pablo Neira Ayuso | 1c45074 | 2011-05-06 12:13:10 +0200 | [diff] [blame] | 1032 | osmo_counter_inc(msg->lchan->ts->trx->bts->network->stats.chan.rf_fail); |
Holger Hans Peter Freyther | 29eb19b | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 1033 | return rsl_rf_chan_release_err(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1034 | } |
| 1035 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1036 | static void print_meas_rep_uni(struct gsm_meas_rep_unidir *mru, |
| 1037 | const char *prefix) |
| 1038 | { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1039 | DEBUGPC(DMEAS, "RXL-FULL-%s=%3ddBm RXL-SUB-%s=%3ddBm ", |
| 1040 | prefix, rxlev2dbm(mru->full.rx_lev), |
| 1041 | prefix, rxlev2dbm(mru->sub.rx_lev)); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1042 | DEBUGPC(DMEAS, "RXQ-FULL-%s=%d RXQ-SUB-%s=%d ", |
| 1043 | prefix, mru->full.rx_qual, prefix, mru->sub.rx_qual); |
| 1044 | } |
| 1045 | |
Harald Welte | 50290cc | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1046 | 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] | 1047 | { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1048 | int i; |
Harald Welte | 50290cc | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1049 | char *name = ""; |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1050 | |
Harald Welte | 50290cc | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1051 | if (lchan && lchan->conn && lchan->conn->subscr) |
| 1052 | name = subscr_name(lchan->conn->subscr); |
| 1053 | |
| 1054 | DEBUGP(DMEAS, "[%s] MEASUREMENT RESULT NR=%d ", name, mr->nr); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1055 | |
| 1056 | if (mr->flags & MEAS_REP_F_DL_DTX) |
| 1057 | DEBUGPC(DMEAS, "DTXd "); |
| 1058 | |
| 1059 | print_meas_rep_uni(&mr->ul, "ul"); |
| 1060 | DEBUGPC(DMEAS, "BS_POWER=%d ", mr->bs_power); |
| 1061 | if (mr->flags & MEAS_REP_F_MS_TO) |
| 1062 | DEBUGPC(DMEAS, "MS_TO=%d ", mr->ms_timing_offset); |
| 1063 | |
| 1064 | if (mr->flags & MEAS_REP_F_MS_L1) { |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1065 | DEBUGPC(DMEAS, "L1_MS_PWR=%3ddBm ", mr->ms_l1.pwr); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1066 | DEBUGPC(DMEAS, "L1_FPC=%u ", |
| 1067 | mr->flags & MEAS_REP_F_FPC ? 1 : 0); |
| 1068 | DEBUGPC(DMEAS, "L1_TA=%u ", mr->ms_l1.ta); |
| 1069 | } |
| 1070 | |
| 1071 | if (mr->flags & MEAS_REP_F_UL_DTX) |
| 1072 | DEBUGPC(DMEAS, "DTXu "); |
| 1073 | if (mr->flags & MEAS_REP_F_BA1) |
| 1074 | DEBUGPC(DMEAS, "BA1 "); |
| 1075 | if (!(mr->flags & MEAS_REP_F_DL_VALID)) |
| 1076 | DEBUGPC(DMEAS, "NOT VALID "); |
| 1077 | else |
| 1078 | print_meas_rep_uni(&mr->dl, "dl"); |
| 1079 | |
| 1080 | DEBUGPC(DMEAS, "NUM_NEIGH=%u\n", mr->num_cell); |
Harald Welte | 0b833f8 | 2009-12-19 18:33:05 +0100 | [diff] [blame] | 1081 | if (mr->num_cell == 7) |
| 1082 | return; |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1083 | for (i = 0; i < mr->num_cell; i++) { |
| 1084 | struct gsm_meas_rep_cell *mrc = &mr->cell[i]; |
Harald Welte | 350c2d3 | 2009-12-25 23:02:22 +0100 | [diff] [blame] | 1085 | DEBUGP(DMEAS, "IDX=%u ARFCN=%u BSIC=%u => %d dBm\n", |
| 1086 | mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev)); |
Harald Welte | 0e4fa78 | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1087 | } |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1088 | } |
| 1089 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1090 | static int rsl_rx_meas_res(struct msgb *msg) |
| 1091 | { |
| 1092 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1093 | struct tlv_parsed tp; |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1094 | 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] | 1095 | uint8_t len; |
| 1096 | const uint8_t *val; |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1097 | int rc; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1098 | |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1099 | /* check if this channel is actually active */ |
| 1100 | /* FIXME: maybe this check should be way more generic/centralized */ |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1101 | if (msg->lchan->state != LCHAN_S_ACTIVE) { |
Holger Hans Peter Freyther | 67a2e29 | 2010-07-29 14:50:57 +0800 | [diff] [blame] | 1102 | LOGP(DRSL, LOGL_DEBUG, "%s: MEAS RES for inactive channel\n", |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1103 | gsm_lchan_name(msg->lchan)); |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1104 | return 0; |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1105 | } |
Harald Welte | 4baa9c5 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1106 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1107 | memset(mr, 0, sizeof(*mr)); |
Harald Welte | aa0efa1 | 2009-12-16 23:29:34 +0100 | [diff] [blame] | 1108 | mr->lchan = msg->lchan; |
Harald Welte | 4efcc54 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 1109 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1110 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1111 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1112 | if (!TLVP_PRESENT(&tp, RSL_IE_MEAS_RES_NR) || |
| 1113 | !TLVP_PRESENT(&tp, RSL_IE_UPLINK_MEAS) || |
| 1114 | !TLVP_PRESENT(&tp, RSL_IE_BS_POWER)) |
| 1115 | return -EIO; |
| 1116 | |
| 1117 | /* Mandatory Parts */ |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1118 | mr->nr = *TLVP_VAL(&tp, RSL_IE_MEAS_RES_NR); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1119 | |
| 1120 | len = TLVP_LEN(&tp, RSL_IE_UPLINK_MEAS); |
| 1121 | val = TLVP_VAL(&tp, RSL_IE_UPLINK_MEAS); |
| 1122 | if (len >= 3) { |
| 1123 | if (val[0] & 0x40) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1124 | mr->flags |= MEAS_REP_F_DL_DTX; |
| 1125 | mr->ul.full.rx_lev = val[0] & 0x3f; |
| 1126 | mr->ul.sub.rx_lev = val[1] & 0x3f; |
| 1127 | mr->ul.full.rx_qual = val[2]>>3 & 0x7; |
| 1128 | mr->ul.sub.rx_qual = val[2] & 0x7; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1129 | } |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1130 | |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1131 | mr->bs_power = *TLVP_VAL(&tp, RSL_IE_BS_POWER); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1132 | |
| 1133 | /* Optional Parts */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1134 | if (TLVP_PRESENT(&tp, RSL_IE_MS_TIMING_OFFSET)) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1135 | mr->ms_timing_offset = |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1136 | *TLVP_VAL(&tp, RSL_IE_MS_TIMING_OFFSET); |
| 1137 | |
Harald Welte | a1467eb | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 1138 | if (TLVP_PRESENT(&tp, RSL_IE_L1_INFO)) { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1139 | struct e1inp_sign_link *sign_link = msg->dst; |
| 1140 | |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1141 | val = TLVP_VAL(&tp, RSL_IE_L1_INFO); |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1142 | mr->flags |= MEAS_REP_F_MS_L1; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1143 | 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] | 1144 | if (val[0] & 0x04) |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1145 | mr->flags |= MEAS_REP_F_FPC; |
| 1146 | mr->ms_l1.ta = val[1]; |
Andreas Eversberg | fe56cf8 | 2011-12-24 11:49:05 +0100 | [diff] [blame] | 1147 | /* BS11 and Nokia reports TA shifted by 2 bits */ |
| 1148 | if (msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_BS11 |
| 1149 | || msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_NOKIA_SITE) |
Andreas Eversberg | 0f18e5e | 2011-12-16 17:45:37 +0100 | [diff] [blame] | 1150 | mr->ms_l1.ta >>= 2; |
Harald Welte | a1467eb | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 1151 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1152 | if (TLVP_PRESENT(&tp, RSL_IE_L3_INFO)) { |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1153 | msg->l3h = (uint8_t *) TLVP_VAL(&tp, RSL_IE_L3_INFO); |
Harald Welte | f947681 | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1154 | rc = gsm48_parse_meas_rep(mr, msg); |
Harald Welte | c20bd1d | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1155 | if (rc < 0) |
| 1156 | return rc; |
| 1157 | } |
| 1158 | |
Harald Welte | 50290cc | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1159 | print_meas_rep(msg->lchan, mr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1160 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1161 | send_lchan_signal(S_LCHAN_MEAS_REP, msg->lchan, mr); |
Harald Welte | 4efcc54 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 1162 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1163 | return 0; |
| 1164 | } |
| 1165 | |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1166 | /* Chapter 8.4.7 */ |
| 1167 | static int rsl_rx_hando_det(struct msgb *msg) |
| 1168 | { |
| 1169 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1170 | struct tlv_parsed tp; |
| 1171 | |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1172 | DEBUGP(DRSL, "%s HANDOVER DETECT ", gsm_lchan_name(msg->lchan)); |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1173 | |
| 1174 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1175 | |
| 1176 | if (TLVP_PRESENT(&tp, RSL_IE_ACCESS_DELAY)) |
| 1177 | DEBUGPC(DRSL, "access delay = %u\n", |
| 1178 | *TLVP_VAL(&tp, RSL_IE_ACCESS_DELAY)); |
| 1179 | else |
| 1180 | DEBUGPC(DRSL, "\n"); |
| 1181 | |
Holger Hans Peter Freyther | 645b383 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1182 | send_lchan_signal(S_LCHAN_HANDOVER_DETECT, msg->lchan, NULL); |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1183 | |
| 1184 | return 0; |
| 1185 | } |
| 1186 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1187 | static int abis_rsl_rx_dchan(struct msgb *msg) |
| 1188 | { |
| 1189 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1190 | int rc = 0; |
| 1191 | char *ts_name; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1192 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1193 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1194 | msg->lchan = lchan_lookup(sign_link->trx, rslh->chan_nr); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1195 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1196 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1197 | switch (rslh->c.msg_type) { |
| 1198 | case RSL_MT_CHAN_ACTIV_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1199 | DEBUGP(DRSL, "%s CHANNEL ACTIVATE ACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1200 | rc = rsl_rx_chan_act_ack(msg); |
| 1201 | break; |
| 1202 | case RSL_MT_CHAN_ACTIV_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1203 | rc = rsl_rx_chan_act_nack(msg); |
| 1204 | break; |
| 1205 | case RSL_MT_CONN_FAIL: |
| 1206 | rc = rsl_rx_conn_fail(msg); |
| 1207 | break; |
| 1208 | case RSL_MT_MEAS_RES: |
| 1209 | rc = rsl_rx_meas_res(msg); |
| 1210 | break; |
Harald Welte | 6720a43 | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1211 | case RSL_MT_HANDO_DET: |
| 1212 | rc = rsl_rx_hando_det(msg); |
| 1213 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1214 | case RSL_MT_RF_CHAN_REL_ACK: |
Harald Welte | 9773f6c | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 1215 | rc = rsl_rx_rf_chan_rel_ack(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1216 | break; |
| 1217 | case RSL_MT_MODE_MODIFY_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1218 | DEBUGP(DRSL, "%s CHANNEL MODE MODIFY ACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1219 | break; |
| 1220 | case RSL_MT_MODE_MODIFY_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1221 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL MODE MODIFY NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1222 | break; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1223 | case RSL_MT_IPAC_PDCH_ACT_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1224 | DEBUGPC(DRSL, "%s IPAC PDCH ACT ACK\n", ts_name); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1225 | msg->lchan->ts->flags |= TS_F_PDCH_MODE; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1226 | break; |
| 1227 | case RSL_MT_IPAC_PDCH_ACT_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1228 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH ACT NACK\n", ts_name); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1229 | break; |
| 1230 | case RSL_MT_IPAC_PDCH_DEACT_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1231 | DEBUGP(DRSL, "%s IPAC PDCH DEACT ACK\n", ts_name); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1232 | msg->lchan->ts->flags &= ~TS_F_PDCH_MODE; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1233 | break; |
| 1234 | case RSL_MT_IPAC_PDCH_DEACT_NACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1235 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH DEACT NACK\n", ts_name); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1236 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1237 | case RSL_MT_PHY_CONTEXT_CONF: |
| 1238 | case RSL_MT_PREPROC_MEAS_RES: |
| 1239 | case RSL_MT_TALKER_DET: |
| 1240 | case RSL_MT_LISTENER_DET: |
| 1241 | case RSL_MT_REMOTE_CODEC_CONF_REP: |
| 1242 | case RSL_MT_MR_CODEC_MOD_ACK: |
| 1243 | case RSL_MT_MR_CODEC_MOD_NACK: |
| 1244 | case RSL_MT_MR_CODEC_MOD_PER: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1245 | LOGP(DRSL, LOGL_NOTICE, "%s Unimplemented Abis RSL DChan " |
| 1246 | "msg 0x%02x\n", ts_name, rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1247 | break; |
| 1248 | default: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1249 | LOGP(DRSL, LOGL_NOTICE, "%s unknown Abis RSL DChan msg 0x%02x\n", |
| 1250 | ts_name, rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1251 | return -EINVAL; |
| 1252 | } |
| 1253 | |
| 1254 | return rc; |
| 1255 | } |
| 1256 | |
| 1257 | static int rsl_rx_error_rep(struct msgb *msg) |
| 1258 | { |
| 1259 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1260 | struct tlv_parsed tp; |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1261 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1262 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1263 | 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] | 1264 | |
| 1265 | rsl_tlv_parse(&tp, rslh->data, msgb_l2len(msg)-sizeof(*rslh)); |
| 1266 | |
| 1267 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1268 | print_rsl_cause(LOGL_ERROR, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1269 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1270 | |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1271 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1272 | |
| 1273 | return 0; |
| 1274 | } |
| 1275 | |
| 1276 | static int abis_rsl_rx_trx(struct msgb *msg) |
| 1277 | { |
| 1278 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1279 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1280 | int rc = 0; |
| 1281 | |
| 1282 | switch (rslh->msg_type) { |
| 1283 | case RSL_MT_ERROR_REPORT: |
| 1284 | rc = rsl_rx_error_rep(msg); |
| 1285 | break; |
| 1286 | case RSL_MT_RF_RES_IND: |
| 1287 | /* interference on idle channels of TRX */ |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1288 | //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] | 1289 | break; |
| 1290 | case RSL_MT_OVERLOAD: |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1291 | /* indicate CCCH / ACCH / processor overload */ |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1292 | LOGP(DRSL, LOGL_ERROR, "%s CCCH/ACCH/CPU Overload\n", |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1293 | gsm_trx_name(sign_link->trx)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1294 | break; |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 1295 | case 0x42: /* Nokia specific: SI End ACK */ |
| 1296 | LOGP(DRSL, LOGL_INFO, "Nokia SI End ACK\n"); |
| 1297 | break; |
| 1298 | case 0x43: /* Nokia specific: SI End NACK */ |
| 1299 | LOGP(DRSL, LOGL_INFO, "Nokia SI End NACK\n"); |
| 1300 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1301 | default: |
Harald Welte (local) | ab788cf | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1302 | LOGP(DRSL, LOGL_NOTICE, "%s Unknown Abis RSL TRX message " |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1303 | "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] | 1304 | return -EINVAL; |
| 1305 | } |
| 1306 | return rc; |
| 1307 | } |
| 1308 | |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1309 | /* If T3101 expires, we never received a response to IMMEDIATE ASSIGN */ |
| 1310 | static void t3101_expired(void *data) |
| 1311 | { |
| 1312 | struct gsm_lchan *lchan = data; |
| 1313 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1314 | rsl_rf_chan_release(lchan, 1, SACCH_DEACTIVATE); |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1315 | } |
| 1316 | |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1317 | /* If T3111 expires, we will send the RF Channel Request */ |
| 1318 | static void t3111_expired(void *data) |
| 1319 | { |
| 1320 | struct gsm_lchan *lchan = data; |
| 1321 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1322 | rsl_rf_chan_release(lchan, 0, SACCH_NONE); |
| 1323 | } |
| 1324 | |
| 1325 | /* If T3109 expires the MS has not send a UA/UM do the error release */ |
| 1326 | static void t3109_expired(void *data) |
| 1327 | { |
| 1328 | struct gsm_lchan *lchan = data; |
| 1329 | |
| 1330 | LOGP(DRSL, LOGL_ERROR, |
| 1331 | "%s SACCH deactivation timeout.\n", gsm_lchan_name(lchan)); |
| 1332 | rsl_rf_chan_release(lchan, 1, SACCH_NONE); |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1333 | } |
| 1334 | |
laforge | 50312e8 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1335 | #define GSM48_LEN2PLEN(a) (((a) << 2) | 1) |
| 1336 | |
Harald Welte | a00fdd7 | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1337 | /* Format an IMM ASS REJ according to 04.08 Chapter 9.1.20 */ |
| 1338 | static int rsl_send_imm_ass_rej(struct gsm_bts *bts, |
| 1339 | unsigned int num_req_refs, |
| 1340 | struct gsm48_req_ref *rqd_refs, |
| 1341 | uint8_t wait_ind) |
| 1342 | { |
| 1343 | uint8_t buf[GSM_MACBLOCK_LEN]; |
| 1344 | struct gsm48_imm_ass_rej *iar = (struct gsm48_imm_ass_rej *)buf; |
| 1345 | |
| 1346 | /* create IMMEDIATE ASSIGN REJECT 04.08 message */ |
| 1347 | memset(iar, 0, sizeof(*iar)); |
| 1348 | iar->proto_discr = GSM48_PDISC_RR; |
Andreas Eversberg | dee934a | 2013-02-07 11:51:16 +0100 | [diff] [blame] | 1349 | iar->msg_type = GSM48_MT_RR_IMM_ASS_REJ; |
Harald Welte | a00fdd7 | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1350 | iar->page_mode = GSM48_PM_SAME; |
| 1351 | |
| 1352 | memcpy(&iar->req_ref1, &rqd_refs[0], sizeof(iar->req_ref1)); |
| 1353 | iar->wait_ind1 = wait_ind; |
| 1354 | |
| 1355 | if (num_req_refs >= 2) |
| 1356 | memcpy(&iar->req_ref2, &rqd_refs[1], sizeof(iar->req_ref2)); |
| 1357 | else |
| 1358 | memcpy(&iar->req_ref2, &rqd_refs[0], sizeof(iar->req_ref2)); |
| 1359 | iar->wait_ind2 = wait_ind; |
| 1360 | |
| 1361 | if (num_req_refs >= 3) |
| 1362 | memcpy(&iar->req_ref3, &rqd_refs[2], sizeof(iar->req_ref3)); |
| 1363 | else |
| 1364 | memcpy(&iar->req_ref3, &rqd_refs[0], sizeof(iar->req_ref3)); |
| 1365 | iar->wait_ind3 = wait_ind; |
| 1366 | |
| 1367 | if (num_req_refs >= 4) |
| 1368 | memcpy(&iar->req_ref4, &rqd_refs[3], sizeof(iar->req_ref4)); |
| 1369 | else |
| 1370 | memcpy(&iar->req_ref4, &rqd_refs[0], sizeof(iar->req_ref4)); |
| 1371 | iar->wait_ind4 = wait_ind; |
| 1372 | |
Andreas Eversberg | dee934a | 2013-02-07 11:51:16 +0100 | [diff] [blame] | 1373 | /* we need to subtract 1 byte from sizeof(*iar) since ia includes the l2_plen field */ |
| 1374 | iar->l2_plen = GSM48_LEN2PLEN((sizeof(*iar)-1)); |
| 1375 | |
| 1376 | return rsl_imm_assign_cmd(bts, sizeof(*iar), (uint8_t *) iar); |
Harald Welte | a00fdd7 | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1377 | } |
| 1378 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1379 | /* MS has requested a channel on the RACH */ |
| 1380 | static int rsl_rx_chan_rqd(struct msgb *msg) |
| 1381 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1382 | struct e1inp_sign_link *sign_link = msg->dst; |
| 1383 | struct gsm_bts *bts = sign_link->trx->bts; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1384 | struct abis_rsl_dchan_hdr *rqd_hdr = msgb_l2(msg); |
| 1385 | struct gsm48_req_ref *rqd_ref; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1386 | enum gsm_chan_t lctype; |
| 1387 | enum gsm_chreq_reason_t chreq_reason; |
| 1388 | struct gsm_lchan *lchan; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1389 | uint8_t rqd_ta; |
Holger Hans Peter Freyther | db39203 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1390 | int is_lu; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1391 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1392 | uint16_t arfcn; |
Holger Hans Peter Freyther | efd75b5 | 2012-02-03 20:10:13 +0100 | [diff] [blame] | 1393 | uint8_t subch; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1394 | |
| 1395 | /* parse request reference to be used in immediate assign */ |
| 1396 | if (rqd_hdr->data[0] != RSL_IE_REQ_REFERENCE) |
| 1397 | return -EINVAL; |
| 1398 | |
| 1399 | rqd_ref = (struct gsm48_req_ref *) &rqd_hdr->data[1]; |
| 1400 | |
| 1401 | /* parse access delay and use as TA */ |
| 1402 | if (rqd_hdr->data[sizeof(struct gsm48_req_ref)+1] != RSL_IE_ACCESS_DELAY) |
| 1403 | return -EINVAL; |
| 1404 | rqd_ta = rqd_hdr->data[sizeof(struct gsm48_req_ref)+2]; |
| 1405 | |
| 1406 | /* determine channel type (SDCCH/TCH_F/TCH_H) based on |
| 1407 | * request reference RA */ |
Holger Hans Peter Freyther | f0f37f1 | 2010-09-06 09:36:02 +0800 | [diff] [blame] | 1408 | lctype = get_ctype_by_chreq(bts->network, rqd_ref->ra); |
| 1409 | chreq_reason = get_reason_by_chreq(rqd_ref->ra, bts->network->neci); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1410 | |
Pablo Neira Ayuso | 1c45074 | 2011-05-06 12:13:10 +0200 | [diff] [blame] | 1411 | osmo_counter_inc(bts->network->stats.chreq.total); |
Harald Welte | 3edc5a9 | 2009-12-22 00:41:05 +0100 | [diff] [blame] | 1412 | |
Holger Hans Peter Freyther | db39203 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1413 | /* |
| 1414 | * We want LOCATION UPDATES to succeed and will assign a TCH |
| 1415 | * if we have no SDCCH available. |
| 1416 | */ |
| 1417 | is_lu = !!(chreq_reason == GSM_CHREQ_REASON_LOCATION_UPD); |
| 1418 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1419 | /* check availability / allocate channel */ |
Holger Hans Peter Freyther | db39203 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1420 | lchan = lchan_alloc(bts, lctype, is_lu); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1421 | if (!lchan) { |
Harald Welte (local) | e0bb5fa | 2009-12-27 13:48:09 +0100 | [diff] [blame] | 1422 | 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] | 1423 | msg->lchan->ts->trx->bts->nr, gsm_lchant_name(lctype), rqd_ref->ra); |
Pablo Neira Ayuso | 1c45074 | 2011-05-06 12:13:10 +0200 | [diff] [blame] | 1424 | osmo_counter_inc(bts->network->stats.chreq.no_channel); |
Harald Welte | a00fdd7 | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1425 | /* FIXME gather multiple CHAN RQD and reject up to 4 at the same time */ |
| 1426 | if (bts->network->T3122) |
| 1427 | 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] | 1428 | return 0; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1429 | } |
| 1430 | |
Harald Welte | c88a443 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1431 | if (lchan->state != LCHAN_S_NONE) |
| 1432 | LOGP(DRSL, LOGL_NOTICE, "%s lchan_alloc() returned channel " |
Harald Welte | ab2534c | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1433 | "in state %s\n", gsm_lchan_name(lchan), |
| 1434 | gsm_lchans_name(lchan->state)); |
Harald Welte (local) | c3be50c | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1435 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1436 | /* save the RACH data as we need it after the CHAN ACT ACK */ |
| 1437 | lchan->rqd_ref = talloc_zero(bts, struct gsm48_req_ref); |
| 1438 | if (!lchan->rqd_ref) { |
| 1439 | LOGP(DRSL, LOGL_ERROR, "Failed to allocate gsm48_req_ref.\n"); |
| 1440 | lchan_free(lchan); |
| 1441 | return -ENOMEM; |
| 1442 | } |
| 1443 | |
Holger Hans Peter Freyther | 161cec1 | 2011-12-29 23:33:04 +0100 | [diff] [blame] | 1444 | rsl_lchan_set_state(lchan, LCHAN_S_ACT_REQ); |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1445 | memcpy(lchan->rqd_ref, rqd_ref, sizeof(*rqd_ref)); |
| 1446 | lchan->rqd_ta = rqd_ta; |
| 1447 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1448 | arfcn = lchan->ts->trx->arfcn; |
| 1449 | subch = lchan->nr; |
| 1450 | |
Harald Welte | d2dd9de | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 1451 | lchan->encr.alg_id = RSL_ENC_ALG_A5(0); /* no encryption */ |
Harald Welte (local) | cbd4610 | 2009-08-13 10:14:26 +0200 | [diff] [blame] | 1452 | 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] | 1453 | lchan->bs_power = 0; /* 0dB reduction, output power = Pn */ |
Harald Welte | 39274f4 | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 1454 | lchan->rsl_cmode = RSL_CMOD_SPD_SIGN; |
Harald Welte | 77234e1 | 2009-08-28 23:28:28 +0900 | [diff] [blame] | 1455 | lchan->tch_mode = GSM48_CMODE_SIGN; |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1456 | |
Harald Welte | 32951ea | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 1457 | /* Start another timer or assume the BTS sends a ACK/NACK? */ |
| 1458 | lchan->act_timer.cb = lchan_act_tmr_cb; |
| 1459 | lchan->act_timer.data = lchan; |
| 1460 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 1461 | |
Andreas Eversberg | 0f18e5e | 2011-12-16 17:45:37 +0100 | [diff] [blame] | 1462 | DEBUGP(DRSL, "%s Activating ARFCN(%u) SS(%u) lctype %s " |
| 1463 | "r=%s ra=0x%02x ta=%d\n", gsm_lchan_name(lchan), arfcn, subch, |
| 1464 | gsm_lchant_name(lchan->type), gsm_chreq_name(chreq_reason), |
| 1465 | rqd_ref->ra, rqd_ta); |
| 1466 | |
Andreas Eversberg | 3ca9af3 | 2013-10-11 12:55:35 +0200 | [diff] [blame] | 1467 | rsl_chan_activate_lchan(lchan, 0x00, 0); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1468 | |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1469 | return 0; |
| 1470 | } |
| 1471 | |
| 1472 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan) |
| 1473 | { |
| 1474 | struct gsm_bts *bts = lchan->ts->trx->bts; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1475 | uint8_t buf[GSM_MACBLOCK_LEN]; |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1476 | struct gsm48_imm_ass *ia = (struct gsm48_imm_ass *) buf; |
| 1477 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1478 | /* create IMMEDIATE ASSIGN 04.08 messge */ |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1479 | memset(ia, 0, sizeof(*ia)); |
laforge | 50312e8 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1480 | /* 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] | 1481 | ia->proto_discr = GSM48_PDISC_RR; |
| 1482 | ia->msg_type = GSM48_MT_RR_IMM_ASS; |
| 1483 | ia->page_mode = GSM48_PM_SAME; |
| 1484 | gsm48_lchan2chan_desc(&ia->chan_desc, lchan); |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1485 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1486 | /* use request reference extracted from CHAN_RQD */ |
Holger Hans Peter Freyther | c08f6f0 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1487 | memcpy(&ia->req_ref, lchan->rqd_ref, sizeof(ia->req_ref)); |
| 1488 | ia->timing_advance = lchan->rqd_ta; |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1489 | if (!lchan->ts->hopping.enabled) { |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1490 | ia->mob_alloc_len = 0; |
Harald Welte | a42a93f | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1491 | } else { |
laforge | e06d598 | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1492 | ia->mob_alloc_len = lchan->ts->hopping.ma_len; |
| 1493 | 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] | 1494 | } |
Harald Welte | 07f3218 | 2010-06-28 18:41:27 +0200 | [diff] [blame] | 1495 | /* we need to subtract 1 byte from sizeof(*ia) since ia includes the l2_plen field */ |
| 1496 | ia->l2_plen = GSM48_LEN2PLEN((sizeof(*ia)-1) + ia->mob_alloc_len); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1497 | |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1498 | /* Start timer T3101 to wait for GSM48_MT_RR_PAG_RESP */ |
| 1499 | lchan->T3101.cb = t3101_expired; |
| 1500 | lchan->T3101.data = lchan; |
Pablo Neira Ayuso | 840ccf6 | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1501 | osmo_timer_schedule(&lchan->T3101, bts->network->T3101, 0); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1502 | |
| 1503 | /* 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] | 1504 | 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] | 1505 | } |
| 1506 | |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1507 | /* current load on the CCCH */ |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1508 | static int rsl_rx_ccch_load(struct msgb *msg) |
| 1509 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1510 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1511 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1512 | struct ccch_signal_data sd; |
| 1513 | |
| 1514 | sd.bts = sign_link->trx->bts; |
| 1515 | sd.rach_slot_count = -1; |
| 1516 | sd.rach_busy_count = -1; |
| 1517 | sd.rach_access_count = -1; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1518 | |
| 1519 | switch (rslh->data[0]) { |
| 1520 | case RSL_IE_PAGING_LOAD: |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1521 | sd.pg_buf_space = rslh->data[1] << 8 | rslh->data[2]; |
| 1522 | 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] | 1523 | /* paging load below configured threshold, use 50 as default */ |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1524 | sd.pg_buf_space = 50; |
Harald Welte | 008a492 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1525 | } |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1526 | paging_update_buffer_space(sign_link->trx->bts, sd.pg_buf_space); |
| 1527 | osmo_signal_dispatch(SS_CCCH, S_CCCH_PAGING_LOAD, &sd); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1528 | break; |
| 1529 | case RSL_IE_RACH_LOAD: |
| 1530 | if (msg->data_len >= 7) { |
Holger Hans Peter Freyther | 285af69 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1531 | sd.rach_slot_count = rslh->data[2] << 8 | rslh->data[3]; |
| 1532 | sd.rach_busy_count = rslh->data[4] << 8 | rslh->data[5]; |
| 1533 | sd.rach_access_count = rslh->data[6] << 8 | rslh->data[7]; |
| 1534 | osmo_signal_dispatch(SS_CCCH, S_CCCH_RACH_LOAD, &sd); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1535 | } |
| 1536 | break; |
| 1537 | default: |
| 1538 | break; |
| 1539 | } |
| 1540 | |
| 1541 | return 0; |
| 1542 | } |
| 1543 | |
| 1544 | static int abis_rsl_rx_cchan(struct msgb *msg) |
| 1545 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1546 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1547 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1548 | int rc = 0; |
| 1549 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1550 | msg->lchan = lchan_lookup(sign_link->trx, rslh->chan_nr); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1551 | |
| 1552 | switch (rslh->c.msg_type) { |
| 1553 | case RSL_MT_CHAN_RQD: |
| 1554 | /* MS has requested a channel on the RACH */ |
| 1555 | rc = rsl_rx_chan_rqd(msg); |
| 1556 | break; |
| 1557 | case RSL_MT_CCCH_LOAD_IND: |
| 1558 | /* current load on the CCCH */ |
| 1559 | rc = rsl_rx_ccch_load(msg); |
| 1560 | break; |
| 1561 | case RSL_MT_DELETE_IND: |
| 1562 | /* CCCH overloaded, IMM_ASSIGN was dropped */ |
| 1563 | case RSL_MT_CBCH_LOAD_IND: |
| 1564 | /* current load on the CBCH */ |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1565 | LOGP(DRSL, LOGL_NOTICE, "Unimplemented Abis RSL TRX message " |
| 1566 | "type 0x%02x\n", rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1567 | break; |
| 1568 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1569 | LOGP(DRSL, LOGL_NOTICE, "Unknown Abis RSL TRX message type " |
| 1570 | "0x%02x\n", rslh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1571 | return -EINVAL; |
| 1572 | } |
| 1573 | |
| 1574 | return rc; |
| 1575 | } |
| 1576 | |
| 1577 | static int rsl_rx_rll_err_ind(struct msgb *msg) |
| 1578 | { |
Holger Hans Peter Freyther | 80abe25 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1579 | struct tlv_parsed tp; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1580 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Holger Hans Peter Freyther | 80abe25 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1581 | uint8_t rlm_cause; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1582 | |
Holger Hans Peter Freyther | 80abe25 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1583 | rsl_tlv_parse(&tp, rllh->data, msgb_l2len(msg) - sizeof(*rllh)); |
| 1584 | if (!TLVP_PRESENT(&tp, RSL_IE_RLM_CAUSE)) { |
| 1585 | LOGP(DRLL, LOGL_ERROR, |
| 1586 | "%s ERROR INDICATION without mandantory cause.\n", |
| 1587 | gsm_lchan_name(msg->lchan)); |
| 1588 | return -1; |
| 1589 | } |
| 1590 | |
| 1591 | rlm_cause = *TLVP_VAL(&tp, RSL_IE_RLM_CAUSE); |
Holger Hans Peter Freyther | de4da29 | 2014-04-19 16:45:36 +0200 | [diff] [blame] | 1592 | 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] | 1593 | gsm_lchan_name(msg->lchan), |
Holger Hans Peter Freyther | de4da29 | 2014-04-19 16:45:36 +0200 | [diff] [blame] | 1594 | rsl_rlm_cause_name(rlm_cause), |
| 1595 | gsm_lchans_name(msg->lchan->state)); |
| 1596 | |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1597 | 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] | 1598 | |
Holger Hans Peter Freyther | 80abe25 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1599 | if (rlm_cause == RLL_CAUSE_T200_EXPIRED) { |
Pablo Neira Ayuso | 1c45074 | 2011-05-06 12:13:10 +0200 | [diff] [blame] | 1600 | osmo_counter_inc(msg->lchan->ts->trx->bts->network->stats.chan.rll_err); |
Holger Hans Peter Freyther | 29eb19b | 2014-04-19 17:38:33 +0200 | [diff] [blame] | 1601 | return rsl_rf_chan_release_err(msg->lchan); |
Holger Hans Peter Freyther | 27942e9 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1602 | } |
Harald Welte | 692f585 | 2009-07-04 09:40:05 +0200 | [diff] [blame] | 1603 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1604 | return 0; |
| 1605 | } |
| 1606 | |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1607 | static void rsl_handle_release(struct gsm_lchan *lchan) |
| 1608 | { |
Holger Hans Peter Freyther | 3fdf5b9 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1609 | int sapi; |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1610 | struct gsm_bts *bts; |
Holger Hans Peter Freyther | 3fdf5b9 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1611 | |
Holger Hans Peter Freyther | 701a647 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 1612 | /* |
| 1613 | * Maybe only one link/SAPI was releasd or the error handling |
| 1614 | * was activated. Just return now and let the other code handle |
| 1615 | * it. |
| 1616 | */ |
Holger Hans Peter Freyther | d26cbc8 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1617 | if (lchan->state != LCHAN_S_REL_REQ) |
Holger Hans Peter Freyther | 3fdf5b9 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1618 | return; |
| 1619 | |
| 1620 | for (sapi = 0; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 1621 | if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) |
| 1622 | continue; |
Harald Welte | 497aa98 | 2010-12-24 12:51:07 +0100 | [diff] [blame] | 1623 | 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] | 1624 | gsm_lchan_name(lchan), sapi); |
| 1625 | return; |
| 1626 | } |
| 1627 | |
Holger Hans Peter Freyther | d26cbc8 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1628 | |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1629 | /* Stop T3109 and wait for T3111 before re-using the channel */ |
| 1630 | osmo_timer_del(&lchan->T3109); |
Holger Hans Peter Freyther | 4a00c06 | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1631 | lchan->T3111.cb = t3111_expired; |
| 1632 | lchan->T3111.data = lchan; |
| 1633 | bts = lchan->ts->trx->bts; |
Pablo Neira Ayuso | 840ccf6 | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1634 | osmo_timer_schedule(&lchan->T3111, bts->network->T3111, 0); |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1635 | } |
| 1636 | |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1637 | /* ESTABLISH INDICATION, LOCATION AREA UPDATE REQUEST |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1638 | 0x02, 0x06, |
| 1639 | 0x01, 0x20, |
| 1640 | 0x02, 0x00, |
| 1641 | 0x0b, 0x00, 0x0f, 0x05, 0x08, ... */ |
| 1642 | |
| 1643 | static int abis_rsl_rx_rll(struct msgb *msg) |
| 1644 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1645 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1646 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
| 1647 | int rc = 0; |
| 1648 | char *ts_name; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1649 | uint8_t sapi = rllh->link_id & 7; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1650 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1651 | msg->lchan = lchan_lookup(sign_link->trx, rllh->chan_nr); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1652 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1653 | DEBUGP(DRLL, "%s SAPI=%u ", ts_name, sapi); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1654 | |
| 1655 | switch (rllh->c.msg_type) { |
| 1656 | case RSL_MT_DATA_IND: |
| 1657 | DEBUGPC(DRLL, "DATA INDICATION\n"); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1658 | if (msgb_l2len(msg) > |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1659 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1660 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1661 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | 64994ce | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1662 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1663 | } |
| 1664 | break; |
| 1665 | case RSL_MT_EST_IND: |
| 1666 | DEBUGPC(DRLL, "ESTABLISH INDICATION\n"); |
Harald Welte | 427dbc4 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1667 | /* lchan is established, stop T3101 */ |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1668 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_MS; |
Pablo Neira Ayuso | 840ccf6 | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1669 | osmo_timer_del(&msg->lchan->T3101); |
Holger Hans Peter Freyther | 7113514 | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1670 | if (msgb_l2len(msg) > |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1671 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1672 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1673 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | 64994ce | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1674 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1675 | } |
| 1676 | break; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1677 | case RSL_MT_EST_CONF: |
Harald Welte | 6140217 | 2009-08-09 14:13:58 +0200 | [diff] [blame] | 1678 | DEBUGPC(DRLL, "ESTABLISH CONFIRM\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1679 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_NET; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1680 | rll_indication(msg->lchan, rllh->link_id, |
| 1681 | BSC_RLLR_IND_EST_CONF); |
| 1682 | break; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1683 | case RSL_MT_REL_IND: |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1684 | /* BTS informs us of having received DISC from MS */ |
Harald Welte | b660144 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1685 | DEBUGPC(DRLL, "RELEASE INDICATION\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1686 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Harald Welte | ed9a5ab | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1687 | rll_indication(msg->lchan, rllh->link_id, |
| 1688 | BSC_RLLR_IND_REL_IND); |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1689 | rsl_handle_release(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1690 | break; |
| 1691 | case RSL_MT_REL_CONF: |
Harald Welte | 0f2e3c1 | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1692 | /* BTS informs us of having received UA from MS, |
| 1693 | * in response to DISC that we've sent earlier */ |
Harald Welte | b660144 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1694 | DEBUGPC(DRLL, "RELEASE CONFIRMATION\n"); |
Holger Hans Peter Freyther | d831805 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1695 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Holger Hans Peter Freyther | 65f0852 | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1696 | rsl_handle_release(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1697 | break; |
| 1698 | case RSL_MT_ERROR_IND: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1699 | rc = rsl_rx_rll_err_ind(msg); |
| 1700 | break; |
| 1701 | case RSL_MT_UNIT_DATA_IND: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1702 | LOGP(DRLL, LOGL_NOTICE, "unimplemented Abis RLL message " |
| 1703 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1704 | break; |
| 1705 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1706 | LOGP(DRLL, LOGL_NOTICE, "unknown Abis RLL message " |
| 1707 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1708 | } |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1709 | return rc; |
| 1710 | } |
| 1711 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1712 | static uint8_t ipa_smod_s_for_lchan(struct gsm_lchan *lchan) |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1713 | { |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1714 | switch (lchan->tch_mode) { |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1715 | case GSM48_CMODE_SPEECH_V1: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1716 | switch (lchan->type) { |
| 1717 | case GSM_LCHAN_TCH_F: |
| 1718 | return 0x00; |
| 1719 | case GSM_LCHAN_TCH_H: |
| 1720 | return 0x03; |
| 1721 | default: |
| 1722 | break; |
| 1723 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 1724 | break; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1725 | case GSM48_CMODE_SPEECH_EFR: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1726 | switch (lchan->type) { |
| 1727 | case GSM_LCHAN_TCH_F: |
| 1728 | return 0x01; |
| 1729 | /* there's no half-rate EFR */ |
| 1730 | default: |
| 1731 | break; |
| 1732 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 1733 | break; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1734 | case GSM48_CMODE_SPEECH_AMR: |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1735 | switch (lchan->type) { |
| 1736 | case GSM_LCHAN_TCH_F: |
| 1737 | return 0x02; |
| 1738 | case GSM_LCHAN_TCH_H: |
| 1739 | return 0x05; |
| 1740 | default: |
| 1741 | break; |
| 1742 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 1743 | break; |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1744 | default: |
| 1745 | break; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1746 | } |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1747 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access speech mode for " |
Harald Welte | b284b47 | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1748 | "tch_mode == 0x%02x\n", lchan->tch_mode); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1749 | return 0; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1750 | } |
| 1751 | |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1752 | static uint8_t ipa_rtp_pt_for_lchan(struct gsm_lchan *lchan) |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1753 | { |
| 1754 | switch (lchan->tch_mode) { |
| 1755 | case GSM48_CMODE_SPEECH_V1: |
| 1756 | switch (lchan->type) { |
| 1757 | case GSM_LCHAN_TCH_F: |
| 1758 | return RTP_PT_GSM_FULL; |
| 1759 | case GSM_LCHAN_TCH_H: |
| 1760 | return RTP_PT_GSM_HALF; |
| 1761 | default: |
| 1762 | break; |
| 1763 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 1764 | break; |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1765 | case GSM48_CMODE_SPEECH_EFR: |
| 1766 | switch (lchan->type) { |
| 1767 | case GSM_LCHAN_TCH_F: |
| 1768 | return RTP_PT_GSM_EFR; |
| 1769 | /* there's no half-rate EFR */ |
| 1770 | default: |
| 1771 | break; |
| 1772 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 1773 | break; |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1774 | case GSM48_CMODE_SPEECH_AMR: |
| 1775 | switch (lchan->type) { |
| 1776 | case GSM_LCHAN_TCH_F: |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1777 | case GSM_LCHAN_TCH_H: |
Holger Hans Peter Freyther | d78bee8 | 2011-07-21 10:24:46 +0200 | [diff] [blame] | 1778 | return RTP_PT_AMR; |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1779 | default: |
| 1780 | break; |
| 1781 | } |
Holger Hans Peter Freyther | e523609 | 2014-04-04 12:14:55 +0200 | [diff] [blame] | 1782 | break; |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1783 | default: |
| 1784 | break; |
| 1785 | } |
| 1786 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access rtp payload type for " |
| 1787 | "tch_mode == 0x%02x\n & lchan_type == %d", |
| 1788 | lchan->tch_mode, lchan->type); |
| 1789 | return 0; |
| 1790 | } |
| 1791 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1792 | /* ip.access specific RSL extensions */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1793 | static void ipac_parse_rtp(struct gsm_lchan *lchan, struct tlv_parsed *tv) |
| 1794 | { |
| 1795 | struct in_addr ip; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1796 | uint16_t port, conn_id; |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1797 | |
| 1798 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_IP)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 1799 | ip.s_addr = tlvp_val32_unal(tv, RSL_IE_IPAC_LOCAL_IP); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1800 | DEBUGPC(DRSL, "LOCAL_IP=%s ", inet_ntoa(ip)); |
| 1801 | lchan->abis_ip.bound_ip = ntohl(ip.s_addr); |
| 1802 | } |
| 1803 | |
| 1804 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_PORT)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 1805 | port = tlvp_val16_unal(tv, RSL_IE_IPAC_LOCAL_PORT); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1806 | port = ntohs(port); |
| 1807 | DEBUGPC(DRSL, "LOCAL_PORT=%u ", port); |
| 1808 | lchan->abis_ip.bound_port = port; |
| 1809 | } |
| 1810 | |
| 1811 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_CONN_ID)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 1812 | conn_id = tlvp_val16_unal(tv, RSL_IE_IPAC_CONN_ID); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1813 | conn_id = ntohs(conn_id); |
| 1814 | DEBUGPC(DRSL, "CON_ID=%u ", conn_id); |
| 1815 | lchan->abis_ip.conn_id = conn_id; |
| 1816 | } |
| 1817 | |
| 1818 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_RTP_PAYLOAD2)) { |
| 1819 | lchan->abis_ip.rtp_payload2 = |
| 1820 | *TLVP_VAL(tv, RSL_IE_IPAC_RTP_PAYLOAD2); |
| 1821 | DEBUGPC(DRSL, "RTP_PAYLOAD2=0x%02x ", |
| 1822 | lchan->abis_ip.rtp_payload2); |
| 1823 | } |
| 1824 | |
| 1825 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_SPEECH_MODE)) { |
| 1826 | lchan->abis_ip.speech_mode = |
| 1827 | *TLVP_VAL(tv, RSL_IE_IPAC_SPEECH_MODE); |
| 1828 | DEBUGPC(DRSL, "speech_mode=0x%02x ", |
| 1829 | lchan->abis_ip.speech_mode); |
| 1830 | } |
| 1831 | |
| 1832 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_IP)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 1833 | ip.s_addr = tlvp_val32_unal(tv, RSL_IE_IPAC_REMOTE_IP); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1834 | DEBUGPC(DRSL, "REMOTE_IP=%s ", inet_ntoa(ip)); |
| 1835 | lchan->abis_ip.connect_ip = ntohl(ip.s_addr); |
| 1836 | } |
| 1837 | |
| 1838 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_PORT)) { |
Daniel Willmann | b97c9d1 | 2014-06-27 17:05:47 +0200 | [diff] [blame] | 1839 | port = tlvp_val16_unal(tv, RSL_IE_IPAC_REMOTE_PORT); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1840 | port = ntohs(port); |
| 1841 | DEBUGPC(DRSL, "REMOTE_PORT=%u ", port); |
| 1842 | lchan->abis_ip.connect_port = port; |
| 1843 | } |
| 1844 | } |
| 1845 | |
Harald Welte | 9a696d7 | 2013-02-03 12:06:58 +0100 | [diff] [blame] | 1846 | /*! \brief Issue IPA RSL CRCX to configure RTP on BTS side |
| 1847 | * \param[in] lchan Logical Channel for which we issue CRCX |
| 1848 | */ |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1849 | int rsl_ipacc_crcx(struct gsm_lchan *lchan) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1850 | { |
| 1851 | struct msgb *msg = rsl_msgb_alloc(); |
| 1852 | struct abis_rsl_dchan_hdr *dh; |
| 1853 | |
| 1854 | 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] | 1855 | init_dchan_hdr(dh, RSL_MT_IPAC_CRCX); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1856 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1857 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1858 | |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1859 | /* 0x1- == receive-only, 0x-1 == EFR codec */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1860 | lchan->abis_ip.speech_mode = 0x10 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1861 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1862 | 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] | 1863 | 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] | 1864 | |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1865 | DEBUGP(DRSL, "%s IPAC_BIND speech_mode=0x%02x RTP_PAYLOAD=%d\n", |
| 1866 | gsm_lchan_name(lchan), lchan->abis_ip.speech_mode, |
| 1867 | lchan->abis_ip.rtp_payload); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1868 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1869 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1870 | |
| 1871 | return abis_rsl_sendmsg(msg); |
| 1872 | } |
| 1873 | |
Harald Welte | 9a696d7 | 2013-02-03 12:06:58 +0100 | [diff] [blame] | 1874 | /*! \brief Issue IPA RSL MDCX to configure MGW-side of RTP |
| 1875 | * \param[in] lchan Logical Channel for which we issue MDCX |
| 1876 | * \param[in] ip Remote (MGW) IP address for RTP |
| 1877 | * \param[in] port Remote (MGW) UDP port number for RTP |
| 1878 | * \param[in] rtp_payload2 Contents of RTP PAYLOAD 2 IE |
| 1879 | */ |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1880 | int rsl_ipacc_mdcx(struct gsm_lchan *lchan, uint32_t ip, uint16_t port, |
| 1881 | uint8_t rtp_payload2) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1882 | { |
| 1883 | struct msgb *msg = rsl_msgb_alloc(); |
| 1884 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1885 | uint32_t *att_ip; |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1886 | struct in_addr ia; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1887 | |
| 1888 | 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] | 1889 | init_dchan_hdr(dh, RSL_MT_IPAC_MDCX); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1890 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1891 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1892 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1893 | /* we need to store these now as MDCX_ACK does not return them :( */ |
| 1894 | lchan->abis_ip.rtp_payload2 = rtp_payload2; |
| 1895 | lchan->abis_ip.connect_port = port; |
| 1896 | lchan->abis_ip.connect_ip = ip; |
| 1897 | |
Harald Welte | fb4a9e9 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 1898 | /* 0x0- == both directions, 0x-1 == EFR codec */ |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1899 | lchan->abis_ip.speech_mode = 0x00 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1900 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | fb4a9e9 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 1901 | |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1902 | ia.s_addr = htonl(ip); |
Sylvain Munaut | 1338a55 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1903 | DEBUGP(DRSL, "%s IPAC_MDCX IP=%s PORT=%d RTP_PAYLOAD=%d RTP_PAYLOAD2=%d " |
| 1904 | "CONN_ID=%d speech_mode=0x%02x\n", gsm_lchan_name(lchan), |
| 1905 | inet_ntoa(ia), port, lchan->abis_ip.rtp_payload, rtp_payload2, |
| 1906 | lchan->abis_ip.conn_id, lchan->abis_ip.speech_mode); |
Harald Welte | 98d79f9 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1907 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1908 | msgb_tv16_put(msg, RSL_IE_IPAC_CONN_ID, lchan->abis_ip.conn_id); |
| 1909 | msgb_v_put(msg, RSL_IE_IPAC_REMOTE_IP); |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1910 | att_ip = (uint32_t *) msgb_put(msg, sizeof(ip)); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1911 | *att_ip = ia.s_addr; |
| 1912 | msgb_tv16_put(msg, RSL_IE_IPAC_REMOTE_PORT, port); |
| 1913 | 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] | 1914 | 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] | 1915 | if (rtp_payload2) |
| 1916 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD2, rtp_payload2); |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1917 | |
| 1918 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1919 | |
| 1920 | return abis_rsl_sendmsg(msg); |
| 1921 | } |
| 1922 | |
Harald Welte | 9947d9f | 2009-12-20 16:51:09 +0100 | [diff] [blame] | 1923 | /* tell BTS to connect RTP stream to our local RTP socket */ |
| 1924 | int rsl_ipacc_mdcx_to_rtpsock(struct gsm_lchan *lchan) |
| 1925 | { |
| 1926 | struct rtp_socket *rs = lchan->abis_ip.rtp_socket; |
| 1927 | int rc; |
| 1928 | |
| 1929 | rc = rsl_ipacc_mdcx(lchan, ntohl(rs->rtp.sin_local.sin_addr.s_addr), |
| 1930 | ntohs(rs->rtp.sin_local.sin_port), |
| 1931 | /* FIXME: use RTP payload of bound socket, not BTS*/ |
| 1932 | lchan->abis_ip.rtp_payload2); |
| 1933 | |
| 1934 | return rc; |
| 1935 | } |
| 1936 | |
Harald Welte | 6f40df0 | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 1937 | 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] | 1938 | { |
| 1939 | struct msgb *msg = rsl_msgb_alloc(); |
| 1940 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 7eb8a9a | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1941 | uint8_t msg_type; |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1942 | |
| 1943 | if (act) |
| 1944 | msg_type = RSL_MT_IPAC_PDCH_ACT; |
| 1945 | else |
| 1946 | msg_type = RSL_MT_IPAC_PDCH_DEACT; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1947 | |
| 1948 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1949 | init_dchan_hdr(dh, msg_type); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1950 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | e6d51f9 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1951 | dh->chan_nr = gsm_ts2chan_nr(ts, 0); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1952 | |
Harald Welte | 6f40df0 | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 1953 | DEBUGP(DRSL, "%s IPAC_PDCH_%sACT\n", gsm_ts_name(ts), |
Harald Welte | 2b36152 | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1954 | act ? "" : "DE"); |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1955 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1956 | msg->dst = ts->trx->rsl_link; |
Harald Welte | aed946e | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1957 | |
| 1958 | return abis_rsl_sendmsg(msg); |
| 1959 | } |
| 1960 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1961 | static int abis_rsl_rx_ipacc_crcx_ack(struct msgb *msg) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1962 | { |
| 1963 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1964 | struct tlv_parsed tv; |
Harald Welte | 8750421 | 2009-12-02 01:56:49 +0530 | [diff] [blame] | 1965 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1966 | |
| 1967 | /* the BTS has acknowledged a local bind, it now tells us the IP |
| 1968 | * address and port number to which it has bound the given logical |
| 1969 | * channel */ |
| 1970 | |
| 1971 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1972 | if (!TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_PORT) || |
| 1973 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_IP) || |
Harald Welte | b949895 | 2009-07-12 09:45:05 +0200 | [diff] [blame] | 1974 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_CONN_ID)) { |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1975 | LOGP(DRSL, LOGL_NOTICE, "mandatory IE missing"); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1976 | return -EINVAL; |
| 1977 | } |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1978 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1979 | ipac_parse_rtp(lchan, &tv); |
Harald Welte | 5051774 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1980 | |
Pablo Neira Ayuso | ef717c6 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 1981 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_CRCX_ACK, msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 1982 | |
| 1983 | return 0; |
| 1984 | } |
| 1985 | |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1986 | static int abis_rsl_rx_ipacc_mdcx_ack(struct msgb *msg) |
| 1987 | { |
| 1988 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1989 | struct tlv_parsed tv; |
| 1990 | struct gsm_lchan *lchan = msg->lchan; |
| 1991 | |
| 1992 | /* the BTS has acknowledged a remote connect request and |
| 1993 | * it now tells us the IP address and port number to which it has |
| 1994 | * connected the given logical channel */ |
| 1995 | |
| 1996 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1997 | ipac_parse_rtp(lchan, &tv); |
Pablo Neira Ayuso | ef717c6 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 1998 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_MDCX_ACK, msg->lchan); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1999 | |
| 2000 | return 0; |
| 2001 | } |
| 2002 | |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2003 | static int abis_rsl_rx_ipacc_dlcx_ind(struct msgb *msg) |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2004 | { |
| 2005 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 2006 | struct tlv_parsed tv; |
| 2007 | |
| 2008 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2009 | |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 2010 | if (TLVP_PRESENT(&tv, RSL_IE_CAUSE)) |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2011 | print_rsl_cause(LOGL_DEBUG, TLVP_VAL(&tv, RSL_IE_CAUSE), |
Harald Welte | f1a168d | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 2012 | TLVP_LEN(&tv, RSL_IE_CAUSE)); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2013 | |
Pablo Neira Ayuso | ef717c6 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 2014 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_DLCX_IND, msg->lchan); |
Harald Welte | ba4e58d | 2009-07-28 18:02:05 +0200 | [diff] [blame] | 2015 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2016 | return 0; |
| 2017 | } |
| 2018 | |
| 2019 | static int abis_rsl_rx_ipacc(struct msgb *msg) |
| 2020 | { |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2021 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2022 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2023 | char *ts_name; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2024 | int rc = 0; |
| 2025 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2026 | msg->lchan = lchan_lookup(sign_link->trx, rllh->chan_nr); |
Harald Welte (local) | c4e9c9c | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 2027 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2028 | |
| 2029 | switch (rllh->c.msg_type) { |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2030 | case RSL_MT_IPAC_CRCX_ACK: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2031 | DEBUGP(DRSL, "%s IPAC_CRCX_ACK ", ts_name); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2032 | rc = abis_rsl_rx_ipacc_crcx_ack(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2033 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2034 | case RSL_MT_IPAC_CRCX_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2035 | /* somehow the BTS was unable to bind the lchan to its local |
| 2036 | * port?!? */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2037 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_CRCX_NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2038 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2039 | case RSL_MT_IPAC_MDCX_ACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2040 | /* the BTS tells us that a connect operation was successful */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2041 | DEBUGP(DRSL, "%s IPAC_MDCX_ACK ", ts_name); |
Harald Welte | bffa499 | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2042 | rc = abis_rsl_rx_ipacc_mdcx_ack(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2043 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2044 | case RSL_MT_IPAC_MDCX_NACK: |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2045 | /* somehow the BTS was unable to connect the lchan to a remote |
| 2046 | * port */ |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2047 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_MDCX_NACK\n", ts_name); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2048 | break; |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2049 | case RSL_MT_IPAC_DLCX_IND: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2050 | DEBUGP(DRSL, "%s IPAC_DLCX_IND ", ts_name); |
Holger Hans Peter Freyther | 5ea7ea6 | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2051 | rc = abis_rsl_rx_ipacc_dlcx_ind(msg); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2052 | break; |
| 2053 | default: |
Harald Welte | de4477a | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2054 | LOGP(DRSL, LOGL_NOTICE, "Unknown ip.access msg_type 0x%02x\n", |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2055 | rllh->c.msg_type); |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2056 | break; |
| 2057 | } |
| 2058 | DEBUGPC(DRSL, "\n"); |
| 2059 | |
| 2060 | return rc; |
| 2061 | } |
| 2062 | |
| 2063 | |
| 2064 | /* Entry-point where L2 RSL from BTS enters */ |
| 2065 | int abis_rsl_rcvmsg(struct msgb *msg) |
| 2066 | { |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2067 | struct abis_rsl_common_hdr *rslh; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2068 | int rc = 0; |
| 2069 | |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2070 | if (!msg) { |
| 2071 | DEBUGP(DRSL, "Empty RSL msg?..\n"); |
| 2072 | return -1; |
| 2073 | } |
| 2074 | |
| 2075 | if (msgb_l2len(msg) < sizeof(*rslh)) { |
| 2076 | DEBUGP(DRSL, "Truncated RSL message with l2len: %u\n", msgb_l2len(msg)); |
Harald Welte | ce80726 | 2012-05-31 20:22:34 +0200 | [diff] [blame] | 2077 | msgb_free(msg); |
Holger Hans Peter Freyther | c7d9409 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2078 | return -1; |
| 2079 | } |
| 2080 | |
| 2081 | rslh = msgb_l2(msg); |
| 2082 | |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2083 | switch (rslh->msg_discr & 0xfe) { |
| 2084 | case ABIS_RSL_MDISC_RLL: |
| 2085 | rc = abis_rsl_rx_rll(msg); |
| 2086 | break; |
| 2087 | case ABIS_RSL_MDISC_DED_CHAN: |
| 2088 | rc = abis_rsl_rx_dchan(msg); |
| 2089 | break; |
| 2090 | case ABIS_RSL_MDISC_COM_CHAN: |
| 2091 | rc = abis_rsl_rx_cchan(msg); |
| 2092 | break; |
| 2093 | case ABIS_RSL_MDISC_TRX: |
| 2094 | rc = abis_rsl_rx_trx(msg); |
| 2095 | break; |
| 2096 | case ABIS_RSL_MDISC_LOC: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2097 | LOGP(DRSL, LOGL_NOTICE, "unimplemented RSL msg disc 0x%02x\n", |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2098 | rslh->msg_discr); |
| 2099 | break; |
| 2100 | case ABIS_RSL_MDISC_IPACCESS: |
| 2101 | rc = abis_rsl_rx_ipacc(msg); |
| 2102 | break; |
| 2103 | default: |
Harald Welte | cf2ec4a | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2104 | LOGP(DRSL, LOGL_NOTICE, "unknown RSL message discriminator " |
| 2105 | "0x%02x\n", rslh->msg_discr); |
Harald Welte | ce80726 | 2012-05-31 20:22:34 +0200 | [diff] [blame] | 2106 | rc = -EINVAL; |
Harald Welte | 59b0468 | 2009-06-10 05:40:52 +0800 | [diff] [blame] | 2107 | } |
| 2108 | msgb_free(msg); |
| 2109 | return rc; |
| 2110 | } |
| 2111 | |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2112 | 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] | 2113 | struct rsl_ie_cb_cmd_type cb_command, |
| 2114 | const uint8_t *data, int len) |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2115 | { |
| 2116 | struct abis_rsl_dchan_hdr *dh; |
| 2117 | struct msgb *cb_cmd; |
| 2118 | |
| 2119 | cb_cmd = rsl_msgb_alloc(); |
| 2120 | if (!cb_cmd) |
| 2121 | return -1; |
| 2122 | |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2123 | 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] | 2124 | init_dchan_hdr(dh, RSL_MT_SMS_BC_CMD); |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2125 | dh->c.msg_discr = ABIS_RSL_MDISC_COM_CHAN; |
| 2126 | dh->chan_nr = chan_number; /* TODO: check the chan config */ |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2127 | |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2128 | 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] | 2129 | msgb_tlv_put(cb_cmd, RSL_IE_SMSCB_MSG, len, data); |
| 2130 | |
Harald Welte | bf4ba72 | 2014-12-28 15:00:45 +0100 | [diff] [blame] | 2131 | cb_cmd->dst = bts->c0->rsl_link; |
Holger Hans Peter Freyther | b67f408 | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2132 | |
| 2133 | return abis_rsl_sendmsg(cb_cmd); |
| 2134 | } |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2135 | |
| 2136 | int rsl_nokia_si_begin(struct gsm_bts_trx *trx) |
| 2137 | { |
| 2138 | struct abis_rsl_common_hdr *ch; |
| 2139 | struct msgb *msg = rsl_msgb_alloc(); |
| 2140 | |
| 2141 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2142 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 2143 | ch->msg_type = 0x40; /* Nokia SI Begin */ |
| 2144 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2145 | msg->dst = trx->rsl_link; |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2146 | |
| 2147 | return abis_rsl_sendmsg(msg); |
| 2148 | } |
| 2149 | |
| 2150 | int rsl_nokia_si_end(struct gsm_bts_trx *trx) |
| 2151 | { |
| 2152 | struct abis_rsl_common_hdr *ch; |
| 2153 | struct msgb *msg = rsl_msgb_alloc(); |
| 2154 | |
| 2155 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2156 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 2157 | ch->msg_type = 0x41; /* Nokia SI End */ |
| 2158 | |
| 2159 | msgb_tv_put(msg, 0xFD, 0x00); /* Nokia Pagemode Info, No paging reorganisation required */ |
| 2160 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2161 | msg->dst = trx->rsl_link; |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2162 | |
| 2163 | return abis_rsl_sendmsg(msg); |
| 2164 | } |
| 2165 | |
| 2166 | int rsl_bs_power_control(struct gsm_bts_trx *trx, uint8_t channel, uint8_t reduction) |
| 2167 | { |
| 2168 | struct abis_rsl_common_hdr *ch; |
| 2169 | struct msgb *msg = rsl_msgb_alloc(); |
| 2170 | |
| 2171 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2172 | ch->msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
| 2173 | ch->msg_type = RSL_MT_BS_POWER_CONTROL; |
| 2174 | |
| 2175 | msgb_tv_put(msg, RSL_IE_CHAN_NR, channel); |
| 2176 | msgb_tv_put(msg, RSL_IE_BS_POWER, reduction); /* reduction in 2dB steps */ |
| 2177 | |
Pablo Neira Ayuso | 88c9bba | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2178 | msg->dst = trx->rsl_link; |
Dieter Spaar | 49c843e | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2179 | |
| 2180 | return abis_rsl_sendmsg(msg); |
| 2181 | } |
Holger Hans Peter Freyther | e38af68 | 2011-12-27 22:24:17 +0100 | [diff] [blame] | 2182 | |
| 2183 | /** |
| 2184 | * Release all allocated SAPIs starting from @param start and |
| 2185 | * release them with the given release mode. Once the release |
| 2186 | * confirmation arrives it will be attempted to release the |
| 2187 | * the RF channel. |
| 2188 | */ |
| 2189 | int rsl_release_sapis_from(struct gsm_lchan *lchan, int start, |
| 2190 | enum rsl_rel_mode release_mode) |
| 2191 | { |
| 2192 | int no_sapi = 1; |
| 2193 | int sapi; |
| 2194 | |
| 2195 | for (sapi = start; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 2196 | uint8_t link_id; |
| 2197 | if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) |
| 2198 | continue; |
| 2199 | |
| 2200 | link_id = sapi; |
| 2201 | if (lchan->type == GSM_LCHAN_TCH_F || lchan->type == GSM_LCHAN_TCH_H) |
| 2202 | link_id |= 0x40; |
| 2203 | rsl_release_request(lchan, link_id, release_mode); |
| 2204 | no_sapi = 0; |
| 2205 | } |
| 2206 | |
| 2207 | return no_sapi; |
| 2208 | } |
Holger Hans Peter Freyther | 969a405 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 2209 | |
| 2210 | int rsl_start_t3109(struct gsm_lchan *lchan) |
| 2211 | { |
| 2212 | struct gsm_bts *bts = lchan->ts->trx->bts; |
| 2213 | |
| 2214 | /* Disabled, mostly legacy code */ |
| 2215 | if (bts->network->T3109 == 0) |
| 2216 | return -1; |
| 2217 | |
| 2218 | lchan->T3109.cb = t3109_expired; |
| 2219 | lchan->T3109.data = lchan; |
| 2220 | osmo_timer_schedule(&lchan->T3109, bts->network->T3109, 0); |
| 2221 | return 0; |
| 2222 | } |
Holger Hans Peter Freyther | c63cb86 | 2012-12-25 23:45:14 +0100 | [diff] [blame] | 2223 | |
| 2224 | /** |
| 2225 | * \brief directly RF Channel Release the lchan |
| 2226 | * |
| 2227 | * When no SAPI was allocated, directly release the logical channel. This |
| 2228 | * should only be called from chan_alloc.c on channel release handling. In |
| 2229 | * case no SAPI was established the RF Channel can be directly released, |
| 2230 | */ |
| 2231 | int rsl_direct_rf_release(struct gsm_lchan *lchan) |
| 2232 | { |
| 2233 | int i; |
| 2234 | for (i = 0; i < ARRAY_SIZE(lchan->sapis); ++i) { |
| 2235 | if (lchan->sapis[i] != LCHAN_SAPI_UNUSED) { |
| 2236 | LOGP(DRSL, LOGL_ERROR, "%s SAPI(%d) still allocated.\n", |
| 2237 | gsm_lchan_name(lchan), i); |
| 2238 | return -1; |
| 2239 | } |
| 2240 | } |
| 2241 | |
| 2242 | /* Now release it */ |
| 2243 | return rsl_rf_chan_release(lchan, 0, SACCH_NONE); |
| 2244 | } |