Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1 | /* GSM Radio Signalling Link messages on the A-bis interface |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2 | * 3GPP TS 08.58 version 8.6.0 Release 1999 / ETSI TS 100 596 V8.6.0 */ |
| 3 | |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 4 | /* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org> |
Holger Hans Peter Freyther | 8582535 | 2011-12-27 22:24:17 +0100 | [diff] [blame] | 5 | * (C) 2012 by Holger Hans Peter Freyther |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 6 | * |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 7 | * All Rights Reserved |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 10 | * it under the terms of the GNU Affero General Public License as published by |
| 11 | * the Free Software Foundation; either version 3 of the License, or |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 17 | * GNU Affero General Public License for more details. |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 18 | * |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 19 | * You should have received a copy of the GNU Affero General Public License |
| 20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <stdio.h> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 25 | #include <stdlib.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 26 | #include <errno.h> |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 27 | #include <netinet/in.h> |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 28 | #include <arpa/inet.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 29 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 30 | #include <openbsc/gsm_data.h> |
| 31 | #include <openbsc/gsm_04_08.h> |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 32 | #include <osmocom/gsm/gsm_utils.h> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 33 | #include <openbsc/abis_rsl.h> |
| 34 | #include <openbsc/chan_alloc.h> |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 35 | #include <openbsc/bsc_rll.h> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 36 | #include <openbsc/debug.h> |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 37 | #include <osmocom/gsm/tlv.h> |
Holger Freyther | 392209c | 2009-02-10 00:06:19 +0000 | [diff] [blame] | 38 | #include <openbsc/paging.h> |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 39 | #include <openbsc/signal.h> |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 40 | #include <openbsc/meas_rep.h> |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 41 | #include <openbsc/rtp_proxy.h> |
Pablo Neira Ayuso | ed5cacb | 2011-08-17 22:44:07 +0200 | [diff] [blame] | 42 | #include <osmocom/abis/e1_input.h> |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 43 | #include <osmocom/gsm/rsl.h> |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 44 | #include <osmocom/core/talloc.h> |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 45 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 46 | #define RSL_ALLOC_SIZE 1024 |
| 47 | #define RSL_ALLOC_HEADROOM 128 |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 48 | |
Holger Hans Peter Freyther | b348939 | 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 | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 54 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan); |
| 55 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 56 | static void send_lchan_signal(int sig_no, struct gsm_lchan *lchan, |
| 57 | struct gsm_meas_rep *resp) |
| 58 | { |
| 59 | struct lchan_signal_data sig; |
| 60 | sig.lchan = lchan; |
| 61 | sig.mr = resp; |
Pablo Neira Ayuso | bbc5b99 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 62 | osmo_signal_dispatch(SS_LCHAN, sig_no, &sig); |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 63 | } |
| 64 | |
Holger Hans Peter Freyther | 93599a2 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 65 | static void do_lchan_free(struct gsm_lchan *lchan) |
| 66 | { |
| 67 | /* we have an error timer pending to release that */ |
| 68 | if (lchan->state != LCHAN_S_REL_ERR) |
| 69 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
| 70 | lchan_free(lchan); |
| 71 | } |
| 72 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 73 | static uint8_t mdisc_by_msgtype(uint8_t msg_type) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 74 | { |
| 75 | /* mask off the transparent bit ? */ |
| 76 | msg_type &= 0xfe; |
| 77 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 78 | if ((msg_type & 0xf0) == 0x00) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 79 | return ABIS_RSL_MDISC_RLL; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 80 | if ((msg_type & 0xf0) == 0x10) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 81 | if (msg_type >= 0x19 && msg_type <= 0x22) |
| 82 | return ABIS_RSL_MDISC_TRX; |
| 83 | else |
| 84 | return ABIS_RSL_MDISC_COM_CHAN; |
| 85 | } |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 86 | if ((msg_type & 0xe0) == 0x20) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 87 | return ABIS_RSL_MDISC_DED_CHAN; |
| 88 | |
| 89 | return ABIS_RSL_MDISC_LOC; |
| 90 | } |
| 91 | |
| 92 | static inline void init_dchan_hdr(struct abis_rsl_dchan_hdr *dh, |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 93 | uint8_t msg_type) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 94 | { |
| 95 | dh->c.msg_discr = mdisc_by_msgtype(msg_type); |
| 96 | dh->c.msg_type = msg_type; |
| 97 | dh->ie_chan = RSL_IE_CHAN_NR; |
| 98 | } |
| 99 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 100 | /* determine logical channel based on TRX and channel number IE */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 101 | struct gsm_lchan *lchan_lookup(struct gsm_bts_trx *trx, uint8_t chan_nr) |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 102 | { |
| 103 | struct gsm_lchan *lchan; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 104 | uint8_t ts_nr = chan_nr & 0x07; |
| 105 | uint8_t cbits = chan_nr >> 3; |
| 106 | uint8_t lch_idx; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 107 | struct gsm_bts_trx_ts *ts = &trx->ts[ts_nr]; |
| 108 | |
| 109 | if (cbits == 0x01) { |
| 110 | lch_idx = 0; /* TCH/F */ |
Harald Welte | a1499d0 | 2009-10-24 10:25:50 +0200 | [diff] [blame] | 111 | if (ts->pchan != GSM_PCHAN_TCH_F && |
| 112 | ts->pchan != GSM_PCHAN_PDCH && |
| 113 | ts->pchan != GSM_PCHAN_TCH_F_PDCH) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 114 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 115 | chan_nr, ts->pchan); |
| 116 | } else if ((cbits & 0x1e) == 0x02) { |
| 117 | lch_idx = cbits & 0x1; /* TCH/H */ |
| 118 | if (ts->pchan != GSM_PCHAN_TCH_H) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 119 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 120 | chan_nr, ts->pchan); |
| 121 | } else if ((cbits & 0x1c) == 0x04) { |
| 122 | lch_idx = cbits & 0x3; /* SDCCH/4 */ |
| 123 | if (ts->pchan != GSM_PCHAN_CCCH_SDCCH4) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 124 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 125 | chan_nr, ts->pchan); |
| 126 | } else if ((cbits & 0x18) == 0x08) { |
| 127 | lch_idx = cbits & 0x7; /* SDCCH/8 */ |
| 128 | if (ts->pchan != GSM_PCHAN_SDCCH8_SACCH8C) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 129 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 130 | chan_nr, ts->pchan); |
| 131 | } else if (cbits == 0x10 || cbits == 0x11 || cbits == 0x12) { |
| 132 | lch_idx = 0; |
| 133 | if (ts->pchan != GSM_PCHAN_CCCH && |
| 134 | ts->pchan != GSM_PCHAN_CCCH_SDCCH4) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 135 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 136 | chan_nr, ts->pchan); |
| 137 | /* FIXME: we should not return first sdcch4 !!! */ |
| 138 | } else { |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 139 | LOGP(DRSL, LOGL_ERROR, "unknown chan_nr=0x%02x\n", chan_nr); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 140 | return NULL; |
| 141 | } |
| 142 | |
| 143 | lchan = &ts->lchan[lch_idx]; |
Harald Welte | dc5062b | 2010-03-26 21:28:59 +0800 | [diff] [blame] | 144 | log_set_context(BSC_CTX_LCHAN, lchan); |
Holger Hans Peter Freyther | 2412a07 | 2010-06-28 15:47:12 +0800 | [diff] [blame] | 145 | if (lchan->conn) |
| 146 | log_set_context(BSC_CTX_SUBSCR, lchan->conn->subscr); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 147 | |
| 148 | return lchan; |
| 149 | } |
| 150 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 151 | /* As per TS 03.03 Section 2.2, the IMSI has 'not more than 15 digits' */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 152 | uint64_t str_to_imsi(const char *imsi_str) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 153 | { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 154 | uint64_t ret; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 155 | |
| 156 | ret = strtoull(imsi_str, NULL, 10); |
| 157 | |
| 158 | return ret; |
| 159 | } |
| 160 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 161 | static struct msgb *rsl_msgb_alloc(void) |
| 162 | { |
Harald Welte | 966636f | 2009-06-26 19:39:35 +0200 | [diff] [blame] | 163 | return msgb_alloc_headroom(RSL_ALLOC_SIZE, RSL_ALLOC_HEADROOM, |
| 164 | "RSL"); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 165 | } |
| 166 | |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 167 | #define MACBLOCK_SIZE 23 |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 168 | static void pad_macblock(uint8_t *out, const uint8_t *in, int len) |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 169 | { |
| 170 | memcpy(out, in, len); |
| 171 | |
| 172 | if (len < MACBLOCK_SIZE) |
| 173 | memset(out+len, 0x2b, MACBLOCK_SIZE-len); |
| 174 | } |
| 175 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 176 | /* Chapter 9.3.7: Encryption Information */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 177 | static int build_encr_info(uint8_t *out, struct gsm_lchan *lchan) |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 178 | { |
| 179 | *out++ = lchan->encr.alg_id & 0xff; |
| 180 | if (lchan->encr.key_len) |
| 181 | memcpy(out, lchan->encr.key, lchan->encr.key_len); |
| 182 | return lchan->encr.key_len + 1; |
| 183 | } |
| 184 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 185 | static void print_rsl_cause(int lvl, const uint8_t *cause_v, uint8_t cause_len) |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 186 | { |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 187 | int i; |
| 188 | |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 189 | LOGPC(DRSL, lvl, "CAUSE=0x%02x(%s) ", |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 190 | cause_v[0], rsl_err_name(cause_v[0])); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 191 | for (i = 1; i < cause_len-1; i++) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 192 | LOGPC(DRSL, lvl, "%02x ", cause_v[i]); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 193 | } |
| 194 | |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 195 | static void lchan_act_tmr_cb(void *data) |
| 196 | { |
| 197 | struct gsm_lchan *lchan = data; |
| 198 | |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 199 | LOGP(DRSL, LOGL_ERROR, |
| 200 | "%s Timeout during activation. Marked as broken.\n", |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 201 | gsm_lchan_name(lchan)); |
| 202 | |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 203 | rsl_lchan_set_state(lchan, LCHAN_S_BROKEN); |
Daniel Willmann | 513da17 | 2011-08-11 04:44:12 +0200 | [diff] [blame] | 204 | lchan_free(lchan); |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | static void lchan_deact_tmr_cb(void *data) |
| 208 | { |
| 209 | struct gsm_lchan *lchan = data; |
| 210 | |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 211 | LOGP(DRSL, LOGL_ERROR, |
| 212 | "%s Timeout during deactivation! Marked as broken.\n", |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 213 | gsm_lchan_name(lchan)); |
| 214 | |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 215 | rsl_lchan_set_state(lchan, LCHAN_S_BROKEN); |
| 216 | lchan_free(lchan); |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 217 | } |
| 218 | |
| 219 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 220 | /* Send a BCCH_INFO message as per Chapter 8.5.1 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 221 | int rsl_bcch_info(struct gsm_bts_trx *trx, uint8_t type, |
| 222 | const uint8_t *data, int len) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 223 | { |
| 224 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 225 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 226 | |
| 227 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof*dh); |
| 228 | init_dchan_hdr(dh, RSL_MT_BCCH_INFO); |
| 229 | dh->chan_nr = RSL_CHAN_BCCH; |
| 230 | |
| 231 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 232 | msgb_tlv_put(msg, RSL_IE_FULL_BCCH_INFO, len, data); |
| 233 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 234 | msg->dst = trx->rsl_link; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 235 | |
| 236 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 237 | } |
| 238 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 239 | int rsl_sacch_filling(struct gsm_bts_trx *trx, uint8_t type, |
| 240 | const uint8_t *data, int len) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 241 | { |
| 242 | struct abis_rsl_common_hdr *ch; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 243 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 244 | |
| 245 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 246 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 247 | ch->msg_type = RSL_MT_SACCH_FILL; |
| 248 | |
| 249 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 250 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 251 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 252 | msg->dst = trx->rsl_link; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 253 | |
| 254 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 255 | } |
| 256 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 257 | int rsl_sacch_info_modify(struct gsm_lchan *lchan, uint8_t type, |
| 258 | const uint8_t *data, int len) |
Harald Welte | 7a69cf0 | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 259 | { |
| 260 | struct abis_rsl_dchan_hdr *dh; |
| 261 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 262 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 7a69cf0 | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 263 | |
| 264 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 265 | init_dchan_hdr(dh, RSL_MT_SACCH_INFO_MODIFY); |
| 266 | dh->chan_nr = chan_nr; |
| 267 | |
| 268 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 269 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
| 270 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 271 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 7a69cf0 | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 272 | |
| 273 | return abis_rsl_sendmsg(msg); |
| 274 | } |
| 275 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 276 | int rsl_chan_bs_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int db) |
| 277 | { |
| 278 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 279 | struct msgb *msg; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 280 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 281 | |
| 282 | db = abs(db); |
| 283 | if (db > 30) |
| 284 | return -EINVAL; |
| 285 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 286 | msg = rsl_msgb_alloc(); |
| 287 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 288 | lchan->bs_power = db/2; |
| 289 | if (fpc) |
| 290 | lchan->bs_power |= 0x10; |
| 291 | |
| 292 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 293 | init_dchan_hdr(dh, RSL_MT_BS_POWER_CONTROL); |
| 294 | dh->chan_nr = chan_nr; |
| 295 | |
| 296 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 297 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 298 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 299 | |
| 300 | return abis_rsl_sendmsg(msg); |
| 301 | } |
| 302 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 303 | int rsl_chan_ms_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int dbm) |
| 304 | { |
| 305 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 306 | struct msgb *msg; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 307 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 308 | int ctl_lvl; |
| 309 | |
Harald Welte | 66b6a8d | 2009-08-09 14:45:18 +0200 | [diff] [blame] | 310 | ctl_lvl = ms_pwr_ctl_lvl(lchan->ts->trx->bts->band, dbm); |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 311 | if (ctl_lvl < 0) |
| 312 | return ctl_lvl; |
| 313 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 314 | msg = rsl_msgb_alloc(); |
| 315 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 316 | lchan->ms_power = ctl_lvl; |
| 317 | |
| 318 | if (fpc) |
| 319 | lchan->ms_power |= 0x20; |
| 320 | |
| 321 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 322 | init_dchan_hdr(dh, RSL_MT_MS_POWER_CONTROL); |
| 323 | dh->chan_nr = chan_nr; |
| 324 | |
| 325 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 326 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 327 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 328 | |
| 329 | return abis_rsl_sendmsg(msg); |
| 330 | } |
| 331 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 332 | static int channel_mode_from_lchan(struct rsl_ie_chan_mode *cm, |
| 333 | struct gsm_lchan *lchan) |
| 334 | { |
Holger Hans Peter Freyther | e1145cf | 2013-03-09 17:50:10 +0100 | [diff] [blame] | 335 | memset(cm, 0, sizeof(*cm)); |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 336 | |
| 337 | /* FIXME: what to do with data calls ? */ |
Holger Hans Peter Freyther | 5a3a61d | 2010-09-06 09:25:48 +0800 | [diff] [blame] | 338 | if (lchan->ts->trx->bts->network->dtx_enabled) |
| 339 | cm->dtx_dtu = 0x03; |
| 340 | else |
| 341 | cm->dtx_dtu = 0x00; |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 342 | |
| 343 | /* set TCH Speech/Data */ |
| 344 | cm->spd_ind = lchan->rsl_cmode; |
| 345 | |
Harald Welte | 1a79d36 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 346 | if (lchan->rsl_cmode == RSL_CMOD_SPD_SIGN && |
| 347 | lchan->tch_mode != GSM48_CMODE_SIGN) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 348 | LOGP(DRSL, LOGL_ERROR, "unsupported: rsl_mode == signalling, " |
Harald Welte | 1a79d36 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 349 | "but tch_mode != signalling\n"); |
| 350 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 351 | switch (lchan->type) { |
| 352 | case GSM_LCHAN_SDCCH: |
| 353 | cm->chan_rt = RSL_CMOD_CRT_SDCCH; |
| 354 | break; |
| 355 | case GSM_LCHAN_TCH_F: |
| 356 | cm->chan_rt = RSL_CMOD_CRT_TCH_Bm; |
| 357 | break; |
| 358 | case GSM_LCHAN_TCH_H: |
| 359 | cm->chan_rt = RSL_CMOD_CRT_TCH_Lm; |
| 360 | break; |
| 361 | case GSM_LCHAN_NONE: |
| 362 | case GSM_LCHAN_UNKNOWN: |
| 363 | default: |
| 364 | return -EINVAL; |
| 365 | } |
| 366 | |
| 367 | switch (lchan->tch_mode) { |
| 368 | case GSM48_CMODE_SIGN: |
| 369 | cm->chan_rate = 0; |
| 370 | break; |
| 371 | case GSM48_CMODE_SPEECH_V1: |
| 372 | cm->chan_rate = RSL_CMOD_SP_GSM1; |
| 373 | break; |
| 374 | case GSM48_CMODE_SPEECH_EFR: |
| 375 | cm->chan_rate = RSL_CMOD_SP_GSM2; |
| 376 | break; |
| 377 | case GSM48_CMODE_SPEECH_AMR: |
| 378 | cm->chan_rate = RSL_CMOD_SP_GSM3; |
| 379 | break; |
| 380 | case GSM48_CMODE_DATA_14k5: |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 381 | case GSM48_CMODE_DATA_12k0: |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 382 | case GSM48_CMODE_DATA_6k0: |
Harald Welte | e422798 | 2012-08-24 15:33:56 +0200 | [diff] [blame] | 383 | switch (lchan->csd_mode) { |
| 384 | case LCHAN_CSD_M_NT: |
| 385 | /* non-transparent CSD with RLP */ |
| 386 | switch (lchan->tch_mode) { |
| 387 | case GSM48_CMODE_DATA_14k5: |
| 388 | cm->chan_rate = RSL_CMOD_SP_NT_14k5; |
| 389 | break; |
| 390 | case GSM48_CMODE_DATA_12k0: |
| 391 | cm->chan_rate = RSL_CMOD_SP_NT_12k0; |
| 392 | break; |
| 393 | case GSM48_CMODE_DATA_6k0: |
| 394 | cm->chan_rate = RSL_CMOD_SP_NT_6k0; |
| 395 | break; |
| 396 | default: |
| 397 | return -EINVAL; |
| 398 | } |
| 399 | break; |
| 400 | /* transparent data services below */ |
| 401 | case LCHAN_CSD_M_T_1200_75: |
| 402 | cm->chan_rate = RSL_CMOD_CSD_T_1200_75; |
| 403 | break; |
| 404 | case LCHAN_CSD_M_T_600: |
| 405 | cm->chan_rate = RSL_CMOD_CSD_T_600; |
| 406 | break; |
| 407 | case LCHAN_CSD_M_T_1200: |
| 408 | cm->chan_rate = RSL_CMOD_CSD_T_1200; |
| 409 | break; |
| 410 | case LCHAN_CSD_M_T_2400: |
| 411 | cm->chan_rate = RSL_CMOD_CSD_T_2400; |
| 412 | break; |
| 413 | case LCHAN_CSD_M_T_9600: |
| 414 | cm->chan_rate = RSL_CMOD_CSD_T_9600; |
| 415 | break; |
| 416 | case LCHAN_CSD_M_T_14400: |
| 417 | cm->chan_rate = RSL_CMOD_CSD_T_14400; |
| 418 | break; |
| 419 | case LCHAN_CSD_M_T_29000: |
| 420 | cm->chan_rate = RSL_CMOD_CSD_T_29000; |
| 421 | break; |
| 422 | case LCHAN_CSD_M_T_32000: |
| 423 | cm->chan_rate = RSL_CMOD_CSD_T_32000; |
| 424 | break; |
| 425 | default: |
| 426 | return -EINVAL; |
| 427 | } |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 428 | default: |
| 429 | return -EINVAL; |
| 430 | } |
| 431 | |
| 432 | return 0; |
| 433 | } |
| 434 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 435 | /* Chapter 8.4.1 */ |
Harald Welte | ddab3c7 | 2009-02-28 13:19:15 +0000 | [diff] [blame] | 436 | #if 0 |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 437 | int rsl_chan_activate(struct gsm_bts_trx *trx, uint8_t chan_nr, |
| 438 | uint8_t act_type, |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 439 | struct rsl_ie_chan_mode *chan_mode, |
| 440 | struct rsl_ie_chan_ident *chan_ident, |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 441 | uint8_t bs_power, uint8_t ms_power, |
| 442 | uint8_t ta) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 443 | { |
| 444 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 445 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 446 | |
| 447 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 448 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 449 | dh->chan_nr = chan_nr; |
| 450 | |
| 451 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
| 452 | /* For compatibility with Phase 1 */ |
| 453 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(*chan_mode), |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 454 | (uint8_t *) chan_mode); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 455 | msgb_tlv_put(msg, RSL_IE_CHAN_IDENT, 4, |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 456 | (uint8_t *) chan_ident); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 457 | #if 0 |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 458 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, 1, |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 459 | (uint8_t *) &encr_info); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 460 | #endif |
Harald Welte | d4c9bf3 | 2009-02-15 16:56:18 +0000 | [diff] [blame] | 461 | msgb_tv_put(msg, RSL_IE_BS_POWER, bs_power); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 462 | msgb_tv_put(msg, RSL_IE_MS_POWER, ms_power); |
| 463 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
| 464 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 465 | msg->dst = trx->rsl_link; |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 466 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 467 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 468 | } |
Harald Welte | ddab3c7 | 2009-02-28 13:19:15 +0000 | [diff] [blame] | 469 | #endif |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 470 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 471 | int rsl_chan_activate_lchan(struct gsm_lchan *lchan, uint8_t act_type, |
| 472 | uint8_t ta, uint8_t ho_ref) |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 473 | { |
| 474 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 475 | struct msgb *msg; |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 476 | int rc; |
Harald Welte | 93d50e6 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 477 | uint8_t *len; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 478 | |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 479 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 480 | struct rsl_ie_chan_mode cm; |
laforge | 694a5cf | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 481 | struct gsm48_chan_desc cd; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 482 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 483 | rc = channel_mode_from_lchan(&cm, lchan); |
| 484 | if (rc < 0) |
| 485 | return rc; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 486 | |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 487 | memset(&cd, 0, sizeof(cd)); |
laforge | 694a5cf | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 488 | gsm48_lchan2chan_desc(&cd, lchan); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 489 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 490 | msg = rsl_msgb_alloc(); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 491 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 492 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 493 | dh->chan_nr = chan_nr; |
| 494 | |
| 495 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 496 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 497 | (uint8_t *) &cm); |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 498 | |
| 499 | /* |
| 500 | * The Channel Identification is needed for Phase1 phones |
| 501 | * and it contains the GSM48 Channel Description and the |
| 502 | * Mobile Allocation. The GSM 08.58 asks for the Mobile |
| 503 | * Allocation to have a length of zero. We are using the |
| 504 | * msgb_l3len to calculate the length of both messages. |
| 505 | */ |
laforge | 694a5cf | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 506 | msgb_v_put(msg, RSL_IE_CHAN_IDENT); |
Harald Welte | 93d50e6 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 507 | len = msgb_put(msg, 1); |
Dieter Spaar | eabb6e3 | 2011-07-27 23:40:33 +0200 | [diff] [blame] | 508 | msgb_tv_fixed_put(msg, GSM48_IE_CHANDESC_2, sizeof(cd), (const uint8_t *) &cd); |
Holger Hans Peter Freyther | 0379c6d | 2010-06-30 12:06:20 +0800 | [diff] [blame] | 509 | |
| 510 | if (lchan->ts->hopping.enabled) |
| 511 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, lchan->ts->hopping.ma_len, |
| 512 | lchan->ts->hopping.ma_data); |
| 513 | else |
| 514 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, 0, NULL); |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 515 | |
| 516 | /* update the calculated size */ |
| 517 | msg->l3h = len + 1; |
| 518 | *len = msgb_l3len(msg); |
| 519 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 520 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 521 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 522 | rc = build_encr_info(encr_info, lchan); |
| 523 | if (rc > 0) |
| 524 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 525 | } |
| 526 | |
Harald Welte | 8d77b95 | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 527 | switch (act_type) { |
| 528 | case RSL_ACT_INTER_ASYNC: |
| 529 | case RSL_ACT_INTER_SYNC: |
| 530 | msgb_tv_put(msg, RSL_IE_HANDO_REF, ho_ref); |
| 531 | break; |
| 532 | default: |
| 533 | break; |
| 534 | } |
| 535 | |
Harald Welte | d4c9bf3 | 2009-02-15 16:56:18 +0000 | [diff] [blame] | 536 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 537 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 538 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
| 539 | |
Holger Hans Peter Freyther | 93b6c65 | 2010-01-28 04:45:05 +0100 | [diff] [blame] | 540 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) |
| 541 | msgb_tlv_put(msg, RSL_IE_MR_CONFIG, sizeof(lchan->mr_conf), |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 542 | (uint8_t *) &lchan->mr_conf); |
Holger Hans Peter Freyther | 93b6c65 | 2010-01-28 04:45:05 +0100 | [diff] [blame] | 543 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 544 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 545 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 546 | return abis_rsl_sendmsg(msg); |
| 547 | } |
| 548 | |
Harald Welte | 470abb7 | 2009-07-29 11:38:15 +0200 | [diff] [blame] | 549 | /* Chapter 8.4.9: Modify channel mode on BTS side */ |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 550 | int rsl_chan_mode_modify_req(struct gsm_lchan *lchan) |
| 551 | { |
| 552 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 553 | struct msgb *msg; |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 554 | int rc; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 555 | |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 556 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 557 | struct rsl_ie_chan_mode cm; |
| 558 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 559 | rc = channel_mode_from_lchan(&cm, lchan); |
| 560 | if (rc < 0) |
| 561 | return rc; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 562 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 563 | msg = rsl_msgb_alloc(); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 564 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 565 | init_dchan_hdr(dh, RSL_MT_MODE_MODIFY_REQ); |
| 566 | dh->chan_nr = chan_nr; |
| 567 | |
| 568 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 569 | (uint8_t *) &cm); |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 570 | |
| 571 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 572 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 573 | rc = build_encr_info(encr_info, lchan); |
| 574 | if (rc > 0) |
| 575 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 576 | } |
| 577 | |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 578 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) { |
| 579 | msgb_tlv_put(msg, RSL_IE_MR_CONFIG, sizeof(lchan->mr_conf), |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 580 | (uint8_t *) &lchan->mr_conf); |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 581 | } |
| 582 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 583 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 584 | |
| 585 | return abis_rsl_sendmsg(msg); |
| 586 | } |
| 587 | |
| 588 | /* Chapter 8.4.6: Send the encryption command with given L3 info */ |
| 589 | int rsl_encryption_cmd(struct msgb *msg) |
| 590 | { |
| 591 | struct abis_rsl_dchan_hdr *dh; |
| 592 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 593 | uint8_t chan_nr = gsm_lchan2chan_nr(lchan); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 594 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
| 595 | uint8_t l3_len = msg->len; |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 596 | int rc; |
| 597 | |
| 598 | /* First push the L3 IE tag and length */ |
| 599 | msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len); |
| 600 | |
| 601 | /* then the link identifier (SAPI0, main sign link) */ |
| 602 | msgb_tv_push(msg, RSL_IE_LINK_IDENT, 0); |
| 603 | |
| 604 | /* then encryption information */ |
| 605 | rc = build_encr_info(encr_info, lchan); |
| 606 | if (rc <= 0) |
| 607 | return rc; |
| 608 | msgb_tlv_push(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 609 | |
| 610 | /* and finally the DCHAN header */ |
| 611 | dh = (struct abis_rsl_dchan_hdr *) msgb_push(msg, sizeof(*dh)); |
| 612 | init_dchan_hdr(dh, RSL_MT_ENCR_CMD); |
| 613 | dh->chan_nr = chan_nr; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 614 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 615 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 616 | |
| 617 | return abis_rsl_sendmsg(msg); |
| 618 | } |
| 619 | |
Harald Welte | 115d103 | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 620 | /* Chapter 8.4.5 / 4.6: Deactivate the SACCH after 04.08 RR CHAN RELEASE */ |
Harald Welte | ae0f236 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 621 | int rsl_deact_sacch(struct gsm_lchan *lchan) |
| 622 | { |
| 623 | struct abis_rsl_dchan_hdr *dh; |
| 624 | struct msgb *msg = rsl_msgb_alloc(); |
| 625 | |
| 626 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 627 | init_dchan_hdr(dh, RSL_MT_DEACTIVATE_SACCH); |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 628 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | ae0f236 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 629 | |
| 630 | msg->lchan = lchan; |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 631 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | ae0f236 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 632 | |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 633 | DEBUGP(DRSL, "%s DEACTivate SACCH CMD\n", gsm_lchan_name(lchan)); |
Harald Welte | ae0f236 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 634 | |
| 635 | return abis_rsl_sendmsg(msg); |
| 636 | } |
| 637 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 638 | static void error_timeout_cb(void *data) |
| 639 | { |
| 640 | struct gsm_lchan *lchan = data; |
| 641 | if (lchan->state != LCHAN_S_REL_ERR) { |
| 642 | LOGP(DRSL, LOGL_ERROR, "%s error timeout but not in error state: %d\n", |
| 643 | gsm_lchan_name(lchan), lchan->state); |
| 644 | return; |
| 645 | } |
| 646 | |
| 647 | /* go back to the none state */ |
| 648 | LOGP(DRSL, LOGL_NOTICE, "%s is back in operation.\n", gsm_lchan_name(lchan)); |
Holger Hans Peter Freyther | 44752d9 | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 649 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 650 | } |
| 651 | |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 652 | static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan); |
| 653 | |
Harald Welte | 115d103 | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 654 | /* Chapter 8.4.14 / 4.7: Tell BTS to release the radio channel */ |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 655 | static int rsl_rf_chan_release(struct gsm_lchan *lchan, int error, |
| 656 | enum sacch_deact deact_sacch) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 657 | { |
| 658 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 659 | struct msgb *msg; |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 660 | int rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 661 | |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 662 | /* Stop timers that should lead to a channel release */ |
| 663 | osmo_timer_del(&lchan->T3109); |
| 664 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 665 | if (lchan->state == LCHAN_S_REL_ERR) { |
| 666 | LOGP(DRSL, LOGL_NOTICE, "%s is in error state not sending release.\n", |
| 667 | gsm_lchan_name(lchan)); |
| 668 | return -1; |
| 669 | } |
| 670 | |
| 671 | msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 672 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 673 | init_dchan_hdr(dh, RSL_MT_RF_CHAN_REL); |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 674 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 675 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 676 | msg->lchan = lchan; |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 677 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 678 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 679 | DEBUGP(DRSL, "%s RF Channel Release CMD due error %d\n", gsm_lchan_name(lchan), error); |
| 680 | |
| 681 | if (error) { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 682 | struct e1inp_sign_link *sign_link = msg->dst; |
| 683 | |
Holger Hans Peter Freyther | 9d50a27 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 684 | /* |
| 685 | * FIXME: GSM 04.08 gives us two options for the abnormal |
| 686 | * chanel release. This can be either like in the non-existent |
| 687 | * sub-lcuase 3.5.1 or for the main signalling link deactivate |
| 688 | * the SACCH, start timer T3109 and consider the channel as |
| 689 | * released. |
| 690 | * |
| 691 | * This code is doing the later for all raido links and not |
| 692 | * only the main link. Right now all SAPIs are released on the |
| 693 | * local end, the SACCH will be de-activated and right now the |
| 694 | * T3111 will be started. First T3109 should be started and then |
| 695 | * the T3111. |
| 696 | * |
| 697 | * TODO: Move this out of the function. |
| 698 | */ |
| 699 | |
| 700 | /* |
| 701 | * sacch de-activate and "local end release" |
| 702 | */ |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 703 | if (deact_sacch == SACCH_DEACTIVATE) |
| 704 | rsl_deact_sacch(lchan); |
Holger Hans Peter Freyther | 9d50a27 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 705 | rsl_release_sapis_from(lchan, 0, RSL_REL_LOCAL_END); |
| 706 | |
| 707 | /* |
| 708 | * TODO: start T3109 now. |
| 709 | */ |
Holger Hans Peter Freyther | 44752d9 | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 710 | rsl_lchan_set_state(lchan, LCHAN_S_REL_ERR); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 711 | lchan->error_timer.data = lchan; |
| 712 | lchan->error_timer.cb = error_timeout_cb; |
Pablo Neira Ayuso | bf540cb | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 713 | osmo_timer_schedule(&lchan->error_timer, |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 714 | sign_link->trx->bts->network->T3111 + 2, 0); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 715 | } |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 716 | |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 717 | /* Start another timer or assume the BTS sends a ACK/NACK? */ |
| 718 | lchan->act_timer.cb = lchan_deact_tmr_cb; |
| 719 | lchan->act_timer.data = lchan; |
| 720 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 721 | |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 722 | rc = abis_rsl_sendmsg(msg); |
| 723 | |
Harald Welte | 115d103 | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 724 | /* BTS will respond by RF CHAN REL ACK */ |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 725 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 726 | } |
| 727 | |
Harald Welte | 64bb754 | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 728 | static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan) |
| 729 | { |
| 730 | |
| 731 | DEBUGP(DRSL, "%s RF CHANNEL RELEASE ACK\n", gsm_lchan_name(lchan)); |
| 732 | |
Holger Hans Peter Freyther | 93599a2 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 733 | /* Stop all pending timers */ |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 734 | osmo_timer_del(&lchan->act_timer); |
Holger Hans Peter Freyther | 93599a2 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 735 | osmo_timer_del(&lchan->T3111); |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 736 | |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 737 | if (lchan->state == LCHAN_S_BROKEN) { |
| 738 | /* we are leaving this channel broken for now */ |
| 739 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN REL ACK for broken channel.\n", |
| 740 | gsm_lchan_name(lchan)); |
| 741 | return 0; |
| 742 | } |
| 743 | |
Harald Welte | 64bb754 | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 744 | if (lchan->state != LCHAN_S_REL_REQ && lchan->state != LCHAN_S_REL_ERR) |
| 745 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN REL ACK but state %s\n", |
| 746 | gsm_lchan_name(lchan), |
| 747 | gsm_lchans_name(lchan->state)); |
Holger Hans Peter Freyther | 93599a2 | 2012-12-06 19:09:58 +0100 | [diff] [blame] | 748 | do_lchan_free(lchan); |
Harald Welte | 64bb754 | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 749 | |
| 750 | return 0; |
| 751 | } |
| 752 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 753 | int rsl_paging_cmd(struct gsm_bts *bts, uint8_t paging_group, uint8_t len, |
| 754 | uint8_t *ms_ident, uint8_t chan_needed) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 755 | { |
| 756 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 757 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 758 | |
| 759 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 760 | init_dchan_hdr(dh, RSL_MT_PAGING_CMD); |
| 761 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 762 | |
| 763 | msgb_tv_put(msg, RSL_IE_PAGING_GROUP, paging_group); |
Harald Welte | 255539c | 2008-12-28 02:26:27 +0000 | [diff] [blame] | 764 | msgb_tlv_put(msg, RSL_IE_MS_IDENTITY, len-2, ms_ident+2); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 765 | msgb_tv_put(msg, RSL_IE_CHAN_NEEDED, chan_needed); |
| 766 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 767 | msg->dst = bts->c0->rsl_link; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 768 | |
| 769 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 770 | } |
| 771 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 772 | int imsi_str2bcd(uint8_t *bcd_out, const char *str_in) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 773 | { |
| 774 | int i, len = strlen(str_in); |
| 775 | |
| 776 | for (i = 0; i < len; i++) { |
| 777 | int num = str_in[i] - 0x30; |
| 778 | if (num < 0 || num > 9) |
| 779 | return -1; |
| 780 | if (i % 2 == 0) |
| 781 | bcd_out[i/2] = num; |
| 782 | else |
| 783 | bcd_out[i/2] |= (num << 4); |
| 784 | } |
| 785 | |
| 786 | return 0; |
| 787 | } |
| 788 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 789 | /* Chapter 8.5.6 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 790 | int rsl_imm_assign_cmd(struct gsm_bts *bts, uint8_t len, uint8_t *val) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 791 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 792 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 793 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 794 | uint8_t buf[MACBLOCK_SIZE]; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 795 | |
| 796 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 797 | init_dchan_hdr(dh, RSL_MT_IMMEDIATE_ASSIGN_CMD); |
| 798 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 799 | |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 800 | switch (bts->type) { |
| 801 | case GSM_BTS_TYPE_BS11: |
| 802 | msgb_tlv_put(msg, RSL_IE_IMM_ASS_INFO, len, val); |
| 803 | break; |
| 804 | default: |
| 805 | /* If phase 2, construct a FULL_IMM_ASS_INFO */ |
| 806 | pad_macblock(buf, val, len); |
| 807 | msgb_tlv_put(msg, RSL_IE_FULL_IMM_ASS_INFO, MACBLOCK_SIZE, buf); |
| 808 | break; |
| 809 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 810 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 811 | msg->dst = bts->c0->rsl_link; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 812 | |
| 813 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 814 | } |
| 815 | |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 816 | /* Send Siemens specific MS RF Power Capability Indication */ |
Harald Welte | 31c4893 | 2009-08-10 10:07:33 +0200 | [diff] [blame] | 817 | int rsl_siemens_mrpci(struct gsm_lchan *lchan, struct rsl_mrpci *mrpci) |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 818 | { |
| 819 | struct msgb *msg = rsl_msgb_alloc(); |
| 820 | struct abis_rsl_dchan_hdr *dh; |
| 821 | |
| 822 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 823 | init_dchan_hdr(dh, RSL_MT_SIEMENS_MRPCI); |
Harald Welte | 3c456d0 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 824 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 825 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 826 | msgb_tv_put(msg, RSL_IE_SIEMENS_MRPCI, *(uint8_t *)mrpci); |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 827 | |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 828 | DEBUGP(DRSL, "%s TX Siemens MRPCI 0x%02x\n", |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 829 | gsm_lchan_name(lchan), *(uint8_t *)mrpci); |
Harald Welte | 3c456d0 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 830 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 831 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 3c456d0 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 832 | |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 833 | return abis_rsl_sendmsg(msg); |
| 834 | } |
| 835 | |
| 836 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 837 | /* Send "DATA REQUEST" message with given L3 Info payload */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 838 | /* Chapter 8.3.1 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 839 | int rsl_data_request(struct msgb *msg, uint8_t link_id) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 840 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 841 | if (msg->lchan == NULL) { |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 842 | LOGP(DRSL, LOGL_ERROR, "cannot send DATA REQUEST to unknown lchan\n"); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 843 | return -EINVAL; |
| 844 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 845 | |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 846 | rsl_rll_push_l3(msg, RSL_MT_DATA_REQ, gsm_lchan2chan_nr(msg->lchan), |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 847 | link_id, 1); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 848 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 849 | msg->dst = msg->lchan->ts->trx->rsl_link; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 850 | |
| 851 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 852 | } |
| 853 | |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 854 | /* Send "ESTABLISH REQUEST" message with given L3 Info payload */ |
| 855 | /* Chapter 8.3.1 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 856 | int rsl_establish_request(struct gsm_lchan *lchan, uint8_t link_id) |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 857 | { |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 858 | struct msgb *msg; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 859 | |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 860 | msg = rsl_rll_simple(RSL_MT_EST_REQ, gsm_lchan2chan_nr(lchan), |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 861 | link_id, 0); |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 862 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 863 | |
Harald Welte | fda74ee | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 864 | DEBUGP(DRLL, "%s RSL RLL ESTABLISH REQ (link_id=0x%02x)\n", |
| 865 | gsm_lchan_name(lchan), link_id); |
| 866 | |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 867 | return abis_rsl_sendmsg(msg); |
| 868 | } |
| 869 | |
Andreas Eversberg | 7d8fa34 | 2013-12-05 13:25:06 +0100 | [diff] [blame] | 870 | static void rsl_handle_release(struct gsm_lchan *lchan); |
| 871 | |
| 872 | /* Special work handler to handle missing RSL_MT_REL_CONF message from |
| 873 | * Nokia InSite BTS */ |
| 874 | static void lchan_rel_work_cb(void *data) |
| 875 | { |
| 876 | struct gsm_lchan *lchan = data; |
| 877 | int sapi; |
| 878 | |
| 879 | for (sapi = 0; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 880 | if (lchan->sapis[sapi] == LCHAN_SAPI_REL) |
| 881 | lchan->sapis[sapi] = LCHAN_SAPI_UNUSED; |
| 882 | } |
| 883 | rsl_handle_release(lchan); |
| 884 | } |
| 885 | |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 886 | /* Chapter 8.3.7 Request the release of multiframe mode of RLL connection. |
| 887 | This is what higher layers should call. The BTS then responds with |
| 888 | RELEASE CONFIRM, which we in turn use to trigger RSL CHANNEL RELEASE, |
| 889 | which in turn is acknowledged by RSL CHANNEL RELEASE ACK, which calls |
| 890 | lchan_free() */ |
Holger Hans Peter Freyther | 5ca825e | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 891 | int rsl_release_request(struct gsm_lchan *lchan, uint8_t link_id, |
| 892 | enum rsl_rel_mode release_mode) |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 893 | { |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 894 | |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 895 | struct msgb *msg; |
| 896 | |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 897 | msg = rsl_rll_simple(RSL_MT_REL_REQ, gsm_lchan2chan_nr(lchan), |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 898 | link_id, 0); |
Holger Hans Peter Freyther | 4f5848d | 2010-06-08 11:57:45 +0800 | [diff] [blame] | 899 | /* 0 is normal release, 1 is local end */ |
Holger Hans Peter Freyther | 5ca825e | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 900 | msgb_tv_put(msg, RSL_IE_RELEASE_MODE, release_mode); |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 901 | |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 902 | /* FIXME: start some timer in case we don't receive a REL ACK ? */ |
| 903 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 904 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 905 | |
Harald Welte | fda74ee | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 906 | DEBUGP(DRLL, "%s RSL RLL RELEASE REQ (link_id=0x%02x, reason=%u)\n", |
Holger Hans Peter Freyther | 5ca825e | 2012-12-06 12:01:38 +0100 | [diff] [blame] | 907 | gsm_lchan_name(lchan), link_id, release_mode); |
Harald Welte | fda74ee | 2012-04-26 19:42:19 +0200 | [diff] [blame] | 908 | |
Andreas Eversberg | 7d8fa34 | 2013-12-05 13:25:06 +0100 | [diff] [blame] | 909 | abis_rsl_sendmsg(msg); |
| 910 | |
| 911 | /* Do not wait for Nokia BTS to send the confirm. */ |
| 912 | if (is_nokia_bts(lchan->ts->trx->bts) |
| 913 | && lchan->ts->trx->bts->nokia.no_loc_rel_cnf |
| 914 | && release_mode == RSL_REL_LOCAL_END) { |
| 915 | DEBUGP(DRLL, "Scheduling release, becasuse Nokia InSite BTS does not send a RELease CONFirm.\n"); |
| 916 | lchan->sapis[link_id & 0x7] = LCHAN_SAPI_REL; |
| 917 | lchan->rel_work.cb = lchan_rel_work_cb; |
| 918 | lchan->rel_work.data = lchan; |
| 919 | osmo_timer_schedule(&lchan->rel_work, 0, 0); |
| 920 | } |
| 921 | |
| 922 | return 0; |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 923 | } |
| 924 | |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 925 | int rsl_lchan_set_state(struct gsm_lchan *lchan, int state) |
| 926 | { |
| 927 | lchan->state = state; |
| 928 | return 0; |
| 929 | } |
| 930 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 931 | /* Chapter 8.4.2: Channel Activate Acknowledge */ |
| 932 | static int rsl_rx_chan_act_ack(struct msgb *msg) |
| 933 | { |
| 934 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 935 | |
| 936 | /* BTS has confirmed channel activation, we now need |
| 937 | * to assign the activated channel to the MS */ |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 938 | if (rslh->ie_chan != RSL_IE_CHAN_NR) |
| 939 | return -EINVAL; |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 940 | |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 941 | osmo_timer_del(&msg->lchan->act_timer); |
| 942 | |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 943 | if (msg->lchan->state == LCHAN_S_BROKEN) { |
| 944 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK for broken channel.\n", |
| 945 | gsm_lchan_name(msg->lchan)); |
| 946 | return 0; |
| 947 | } |
| 948 | |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 949 | if (msg->lchan->state != LCHAN_S_ACT_REQ) |
Harald Welte | 1887f9d | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 950 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK, but state %s\n", |
| 951 | gsm_lchan_name(msg->lchan), |
| 952 | gsm_lchans_name(msg->lchan->state)); |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 953 | rsl_lchan_set_state(msg->lchan, LCHAN_S_ACTIVE); |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 954 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 955 | if (msg->lchan->rqd_ref) { |
| 956 | rsl_send_imm_assignment(msg->lchan); |
| 957 | talloc_free(msg->lchan->rqd_ref); |
| 958 | msg->lchan->rqd_ref = NULL; |
| 959 | msg->lchan->rqd_ta = 0; |
| 960 | } |
| 961 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 962 | send_lchan_signal(S_LCHAN_ACTIVATE_ACK, msg->lchan, NULL); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 963 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 964 | return 0; |
| 965 | } |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 966 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 967 | /* Chapter 8.4.3: Channel Activate NACK */ |
| 968 | static int rsl_rx_chan_act_nack(struct msgb *msg) |
| 969 | { |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 970 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 971 | struct tlv_parsed tp; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 972 | |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 973 | osmo_timer_del(&msg->lchan->act_timer); |
| 974 | |
Holger Hans Peter Freyther | 2177624 | 2013-05-01 18:44:04 +0200 | [diff] [blame] | 975 | if (msg->lchan->state == LCHAN_S_BROKEN) { |
| 976 | LOGP(DRSL, LOGL_ERROR, |
| 977 | "%s CHANNEL ACTIVATE NACK for broken channel.\n", |
| 978 | gsm_lchan_name(msg->lchan)); |
| 979 | return -1; |
| 980 | } |
| 981 | |
Daniel Willmann | 6fc6a12 | 2011-08-11 04:54:23 +0200 | [diff] [blame] | 982 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL ACTIVATE NACK ", |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 983 | gsm_lchan_name(msg->lchan)); |
Harald Welte (local) | 91b603d | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 984 | |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 985 | /* BTS has rejected channel activation ?!? */ |
| 986 | if (dh->ie_chan != RSL_IE_CHAN_NR) |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 987 | return -EINVAL; |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 988 | |
| 989 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 990 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 991 | const uint8_t *cause = TLVP_VAL(&tp, RSL_IE_CAUSE); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 992 | print_rsl_cause(LOGL_ERROR, cause, |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 993 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
Holger Hans Peter Freyther | 638da51 | 2012-12-06 19:25:06 +0100 | [diff] [blame] | 994 | msg->lchan->error_cause = *cause; |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 995 | if (*cause != RSL_ERR_RCH_ALR_ACTV_ALLOC) |
Holger Hans Peter Freyther | 638da51 | 2012-12-06 19:25:06 +0100 | [diff] [blame] | 996 | rsl_lchan_set_state(msg->lchan, LCHAN_S_BROKEN); |
Daniel Willmann | 7ddc318 | 2011-08-11 04:47:11 +0200 | [diff] [blame] | 997 | else |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 998 | rsl_rf_chan_release(msg->lchan, 1, SACCH_DEACTIVATE); |
Daniel Willmann | 7ddc318 | 2011-08-11 04:47:11 +0200 | [diff] [blame] | 999 | |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1000 | } else |
Holger Hans Peter Freyther | 638da51 | 2012-12-06 19:25:06 +0100 | [diff] [blame] | 1001 | rsl_lchan_set_state(msg->lchan, LCHAN_S_BROKEN); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1002 | |
Harald Welte (local) | 91b603d | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 1003 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
| 1004 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1005 | send_lchan_signal(S_LCHAN_ACTIVATE_NACK, msg->lchan, NULL); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1006 | return 0; |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1007 | } |
| 1008 | |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 1009 | /* Chapter 8.4.4: Connection Failure Indication */ |
| 1010 | static int rsl_rx_conn_fail(struct msgb *msg) |
| 1011 | { |
| 1012 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1013 | struct tlv_parsed tp; |
| 1014 | |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1015 | /* FIXME: print which channel */ |
Harald Welte (local) | fc05750 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 1016 | LOGP(DRSL, LOGL_NOTICE, "%s CONNECTION FAIL: RELEASING ", |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1017 | gsm_lchan_name(msg->lchan)); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 1018 | |
| 1019 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1020 | |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1021 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1022 | print_rsl_cause(LOGL_NOTICE, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1023 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1024 | |
Harald Welte (local) | fc05750 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 1025 | LOGPC(DRSL, LOGL_NOTICE, "\n"); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 1026 | /* FIXME: only free it after channel release ACK */ |
Pablo Neira Ayuso | dfb342c | 2011-05-06 12:13:10 +0200 | [diff] [blame] | 1027 | osmo_counter_inc(msg->lchan->ts->trx->bts->network->stats.chan.rf_fail); |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1028 | return rsl_rf_chan_release(msg->lchan, 1, SACCH_DEACTIVATE); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 1029 | } |
| 1030 | |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1031 | static void print_meas_rep_uni(struct gsm_meas_rep_unidir *mru, |
| 1032 | const char *prefix) |
| 1033 | { |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1034 | DEBUGPC(DMEAS, "RXL-FULL-%s=%3ddBm RXL-SUB-%s=%3ddBm ", |
| 1035 | prefix, rxlev2dbm(mru->full.rx_lev), |
| 1036 | prefix, rxlev2dbm(mru->sub.rx_lev)); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1037 | DEBUGPC(DMEAS, "RXQ-FULL-%s=%d RXQ-SUB-%s=%d ", |
| 1038 | prefix, mru->full.rx_qual, prefix, mru->sub.rx_qual); |
| 1039 | } |
| 1040 | |
Harald Welte | 0c1bd61 | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1041 | static void print_meas_rep(struct gsm_lchan *lchan, struct gsm_meas_rep *mr) |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1042 | { |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1043 | int i; |
Harald Welte | 0c1bd61 | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1044 | char *name = ""; |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1045 | |
Harald Welte | 0c1bd61 | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1046 | if (lchan && lchan->conn && lchan->conn->subscr) |
| 1047 | name = subscr_name(lchan->conn->subscr); |
| 1048 | |
| 1049 | DEBUGP(DMEAS, "[%s] MEASUREMENT RESULT NR=%d ", name, mr->nr); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1050 | |
| 1051 | if (mr->flags & MEAS_REP_F_DL_DTX) |
| 1052 | DEBUGPC(DMEAS, "DTXd "); |
| 1053 | |
| 1054 | print_meas_rep_uni(&mr->ul, "ul"); |
| 1055 | DEBUGPC(DMEAS, "BS_POWER=%d ", mr->bs_power); |
| 1056 | if (mr->flags & MEAS_REP_F_MS_TO) |
| 1057 | DEBUGPC(DMEAS, "MS_TO=%d ", mr->ms_timing_offset); |
| 1058 | |
| 1059 | if (mr->flags & MEAS_REP_F_MS_L1) { |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1060 | DEBUGPC(DMEAS, "L1_MS_PWR=%3ddBm ", mr->ms_l1.pwr); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1061 | DEBUGPC(DMEAS, "L1_FPC=%u ", |
| 1062 | mr->flags & MEAS_REP_F_FPC ? 1 : 0); |
| 1063 | DEBUGPC(DMEAS, "L1_TA=%u ", mr->ms_l1.ta); |
| 1064 | } |
| 1065 | |
| 1066 | if (mr->flags & MEAS_REP_F_UL_DTX) |
| 1067 | DEBUGPC(DMEAS, "DTXu "); |
| 1068 | if (mr->flags & MEAS_REP_F_BA1) |
| 1069 | DEBUGPC(DMEAS, "BA1 "); |
| 1070 | if (!(mr->flags & MEAS_REP_F_DL_VALID)) |
| 1071 | DEBUGPC(DMEAS, "NOT VALID "); |
| 1072 | else |
| 1073 | print_meas_rep_uni(&mr->dl, "dl"); |
| 1074 | |
| 1075 | DEBUGPC(DMEAS, "NUM_NEIGH=%u\n", mr->num_cell); |
Harald Welte | 479015b | 2009-12-19 18:33:05 +0100 | [diff] [blame] | 1076 | if (mr->num_cell == 7) |
| 1077 | return; |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1078 | for (i = 0; i < mr->num_cell; i++) { |
| 1079 | struct gsm_meas_rep_cell *mrc = &mr->cell[i]; |
Harald Welte | 303e5e0 | 2009-12-25 23:02:22 +0100 | [diff] [blame] | 1080 | DEBUGP(DMEAS, "IDX=%u ARFCN=%u BSIC=%u => %d dBm\n", |
| 1081 | mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev)); |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 1082 | } |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1083 | } |
| 1084 | |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1085 | static int rsl_rx_meas_res(struct msgb *msg) |
| 1086 | { |
| 1087 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1088 | struct tlv_parsed tp; |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1089 | struct gsm_meas_rep *mr = lchan_next_meas_rep(msg->lchan); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1090 | uint8_t len; |
| 1091 | const uint8_t *val; |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1092 | int rc; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1093 | |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1094 | /* check if this channel is actually active */ |
| 1095 | /* FIXME: maybe this check should be way more generic/centralized */ |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1096 | if (msg->lchan->state != LCHAN_S_ACTIVE) { |
Holger Hans Peter Freyther | c44db4a | 2010-07-29 14:50:57 +0800 | [diff] [blame] | 1097 | LOGP(DRSL, LOGL_DEBUG, "%s: MEAS RES for inactive channel\n", |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1098 | gsm_lchan_name(msg->lchan)); |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1099 | return 0; |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1100 | } |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 1101 | |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1102 | memset(mr, 0, sizeof(*mr)); |
Harald Welte | 33e6597 | 2009-12-16 23:29:34 +0100 | [diff] [blame] | 1103 | mr->lchan = msg->lchan; |
Harald Welte | dbb1d88 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 1104 | |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1105 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1106 | |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1107 | if (!TLVP_PRESENT(&tp, RSL_IE_MEAS_RES_NR) || |
| 1108 | !TLVP_PRESENT(&tp, RSL_IE_UPLINK_MEAS) || |
| 1109 | !TLVP_PRESENT(&tp, RSL_IE_BS_POWER)) |
| 1110 | return -EIO; |
| 1111 | |
| 1112 | /* Mandatory Parts */ |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1113 | mr->nr = *TLVP_VAL(&tp, RSL_IE_MEAS_RES_NR); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1114 | |
| 1115 | len = TLVP_LEN(&tp, RSL_IE_UPLINK_MEAS); |
| 1116 | val = TLVP_VAL(&tp, RSL_IE_UPLINK_MEAS); |
| 1117 | if (len >= 3) { |
| 1118 | if (val[0] & 0x40) |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1119 | mr->flags |= MEAS_REP_F_DL_DTX; |
| 1120 | mr->ul.full.rx_lev = val[0] & 0x3f; |
| 1121 | mr->ul.sub.rx_lev = val[1] & 0x3f; |
| 1122 | mr->ul.full.rx_qual = val[2]>>3 & 0x7; |
| 1123 | mr->ul.sub.rx_qual = val[2] & 0x7; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1124 | } |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1125 | |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1126 | mr->bs_power = *TLVP_VAL(&tp, RSL_IE_BS_POWER); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1127 | |
| 1128 | /* Optional Parts */ |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1129 | if (TLVP_PRESENT(&tp, RSL_IE_MS_TIMING_OFFSET)) |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1130 | mr->ms_timing_offset = |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1131 | *TLVP_VAL(&tp, RSL_IE_MS_TIMING_OFFSET); |
| 1132 | |
Harald Welte | fe9af26 | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 1133 | if (TLVP_PRESENT(&tp, RSL_IE_L1_INFO)) { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1134 | struct e1inp_sign_link *sign_link = msg->dst; |
| 1135 | |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1136 | val = TLVP_VAL(&tp, RSL_IE_L1_INFO); |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1137 | mr->flags |= MEAS_REP_F_MS_L1; |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1138 | mr->ms_l1.pwr = ms_pwr_dbm(sign_link->trx->bts->band, val[0] >> 3); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1139 | if (val[0] & 0x04) |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1140 | mr->flags |= MEAS_REP_F_FPC; |
| 1141 | mr->ms_l1.ta = val[1]; |
Andreas Eversberg | 3365cd1 | 2011-12-24 11:49:05 +0100 | [diff] [blame] | 1142 | /* BS11 and Nokia reports TA shifted by 2 bits */ |
| 1143 | if (msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_BS11 |
| 1144 | || msg->lchan->ts->trx->bts->type == GSM_BTS_TYPE_NOKIA_SITE) |
Andreas Eversberg | 2957de9 | 2011-12-16 17:45:37 +0100 | [diff] [blame] | 1145 | mr->ms_l1.ta >>= 2; |
Harald Welte | fe9af26 | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 1146 | } |
Harald Welte | f7c4352 | 2009-06-09 20:24:21 +0000 | [diff] [blame] | 1147 | if (TLVP_PRESENT(&tp, RSL_IE_L3_INFO)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1148 | msg->l3h = (uint8_t *) TLVP_VAL(&tp, RSL_IE_L3_INFO); |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1149 | rc = gsm48_parse_meas_rep(mr, msg); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1150 | if (rc < 0) |
| 1151 | return rc; |
| 1152 | } |
| 1153 | |
Harald Welte | 0c1bd61 | 2012-07-02 17:12:08 +0200 | [diff] [blame] | 1154 | print_meas_rep(msg->lchan, mr); |
Harald Welte | 60d68f1 | 2009-06-05 20:07:43 +0000 | [diff] [blame] | 1155 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1156 | send_lchan_signal(S_LCHAN_MEAS_REP, msg->lchan, mr); |
Harald Welte | dbb1d88 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 1157 | |
Harald Welte | 75d34a8 | 2009-05-23 06:11:13 +0000 | [diff] [blame] | 1158 | return 0; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1159 | } |
| 1160 | |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1161 | /* Chapter 8.4.7 */ |
| 1162 | static int rsl_rx_hando_det(struct msgb *msg) |
| 1163 | { |
| 1164 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1165 | struct tlv_parsed tp; |
| 1166 | |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1167 | DEBUGP(DRSL, "%s HANDOVER DETECT ", gsm_lchan_name(msg->lchan)); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1168 | |
| 1169 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1170 | |
| 1171 | if (TLVP_PRESENT(&tp, RSL_IE_ACCESS_DELAY)) |
| 1172 | DEBUGPC(DRSL, "access delay = %u\n", |
| 1173 | *TLVP_VAL(&tp, RSL_IE_ACCESS_DELAY)); |
| 1174 | else |
| 1175 | DEBUGPC(DRSL, "\n"); |
| 1176 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1177 | send_lchan_signal(S_LCHAN_HANDOVER_DETECT, msg->lchan, NULL); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1178 | |
| 1179 | return 0; |
| 1180 | } |
| 1181 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1182 | static int abis_rsl_rx_dchan(struct msgb *msg) |
| 1183 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1184 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1185 | int rc = 0; |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1186 | char *ts_name; |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1187 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1188 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1189 | msg->lchan = lchan_lookup(sign_link->trx, rslh->chan_nr); |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1190 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1191 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1192 | switch (rslh->c.msg_type) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1193 | case RSL_MT_CHAN_ACTIV_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1194 | DEBUGP(DRSL, "%s CHANNEL ACTIVATE ACK\n", ts_name); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1195 | rc = rsl_rx_chan_act_ack(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1196 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1197 | case RSL_MT_CHAN_ACTIV_NACK: |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1198 | rc = rsl_rx_chan_act_nack(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1199 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1200 | case RSL_MT_CONN_FAIL: |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 1201 | rc = rsl_rx_conn_fail(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1202 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1203 | case RSL_MT_MEAS_RES: |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1204 | rc = rsl_rx_meas_res(msg); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1205 | break; |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1206 | case RSL_MT_HANDO_DET: |
| 1207 | rc = rsl_rx_hando_det(msg); |
| 1208 | break; |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1209 | case RSL_MT_RF_CHAN_REL_ACK: |
Harald Welte | 64bb754 | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 1210 | rc = rsl_rx_rf_chan_rel_ack(msg->lchan); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1211 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1212 | case RSL_MT_MODE_MODIFY_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1213 | DEBUGP(DRSL, "%s CHANNEL MODE MODIFY ACK\n", ts_name); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 1214 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1215 | case RSL_MT_MODE_MODIFY_NACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1216 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL MODE MODIFY NACK\n", ts_name); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 1217 | break; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1218 | case RSL_MT_IPAC_PDCH_ACT_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1219 | DEBUGPC(DRSL, "%s IPAC PDCH ACT ACK\n", ts_name); |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1220 | msg->lchan->ts->flags |= TS_F_PDCH_MODE; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1221 | break; |
| 1222 | case RSL_MT_IPAC_PDCH_ACT_NACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1223 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH ACT NACK\n", ts_name); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1224 | break; |
| 1225 | case RSL_MT_IPAC_PDCH_DEACT_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1226 | DEBUGP(DRSL, "%s IPAC PDCH DEACT ACK\n", ts_name); |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1227 | msg->lchan->ts->flags &= ~TS_F_PDCH_MODE; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1228 | break; |
| 1229 | case RSL_MT_IPAC_PDCH_DEACT_NACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1230 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH DEACT NACK\n", ts_name); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1231 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1232 | case RSL_MT_PHY_CONTEXT_CONF: |
| 1233 | case RSL_MT_PREPROC_MEAS_RES: |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1234 | case RSL_MT_TALKER_DET: |
| 1235 | case RSL_MT_LISTENER_DET: |
| 1236 | case RSL_MT_REMOTE_CODEC_CONF_REP: |
| 1237 | case RSL_MT_MR_CODEC_MOD_ACK: |
| 1238 | case RSL_MT_MR_CODEC_MOD_NACK: |
| 1239 | case RSL_MT_MR_CODEC_MOD_PER: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1240 | LOGP(DRSL, LOGL_NOTICE, "%s Unimplemented Abis RSL DChan " |
| 1241 | "msg 0x%02x\n", ts_name, rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1242 | break; |
| 1243 | default: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1244 | LOGP(DRSL, LOGL_NOTICE, "%s unknown Abis RSL DChan msg 0x%02x\n", |
| 1245 | ts_name, rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1246 | return -EINVAL; |
| 1247 | } |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1248 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1249 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1250 | } |
| 1251 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1252 | static int rsl_rx_error_rep(struct msgb *msg) |
| 1253 | { |
| 1254 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1255 | struct tlv_parsed tp; |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1256 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1257 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1258 | LOGP(DRSL, LOGL_ERROR, "%s ERROR REPORT ", gsm_trx_name(sign_link->trx)); |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1259 | |
| 1260 | rsl_tlv_parse(&tp, rslh->data, msgb_l2len(msg)-sizeof(*rslh)); |
| 1261 | |
| 1262 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1263 | print_rsl_cause(LOGL_ERROR, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1264 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1265 | |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1266 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1267 | |
| 1268 | return 0; |
| 1269 | } |
| 1270 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1271 | static int abis_rsl_rx_trx(struct msgb *msg) |
| 1272 | { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1273 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1274 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1275 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1276 | |
| 1277 | switch (rslh->msg_type) { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1278 | case RSL_MT_ERROR_REPORT: |
| 1279 | rc = rsl_rx_error_rep(msg); |
| 1280 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1281 | case RSL_MT_RF_RES_IND: |
| 1282 | /* interference on idle channels of TRX */ |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1283 | //DEBUGP(DRSL, "%s RF Resource Indication\n", gsm_trx_name(sign_link->trx)); |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 1284 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1285 | case RSL_MT_OVERLOAD: |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1286 | /* indicate CCCH / ACCH / processor overload */ |
Harald Welte (local) | d48f4eb | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1287 | LOGP(DRSL, LOGL_ERROR, "%s CCCH/ACCH/CPU Overload\n", |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1288 | gsm_trx_name(sign_link->trx)); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1289 | break; |
Dieter Spaar | 1664602 | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 1290 | case 0x42: /* Nokia specific: SI End ACK */ |
| 1291 | LOGP(DRSL, LOGL_INFO, "Nokia SI End ACK\n"); |
| 1292 | break; |
| 1293 | case 0x43: /* Nokia specific: SI End NACK */ |
| 1294 | LOGP(DRSL, LOGL_INFO, "Nokia SI End NACK\n"); |
| 1295 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1296 | default: |
Harald Welte (local) | d48f4eb | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1297 | LOGP(DRSL, LOGL_NOTICE, "%s Unknown Abis RSL TRX message " |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1298 | "type 0x%02x\n", gsm_trx_name(sign_link->trx), rslh->msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1299 | return -EINVAL; |
| 1300 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1301 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1302 | } |
| 1303 | |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1304 | /* If T3101 expires, we never received a response to IMMEDIATE ASSIGN */ |
| 1305 | static void t3101_expired(void *data) |
| 1306 | { |
| 1307 | struct gsm_lchan *lchan = data; |
| 1308 | |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1309 | rsl_rf_chan_release(lchan, 1, SACCH_DEACTIVATE); |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1310 | } |
| 1311 | |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1312 | /* If T3111 expires, we will send the RF Channel Request */ |
| 1313 | static void t3111_expired(void *data) |
| 1314 | { |
| 1315 | struct gsm_lchan *lchan = data; |
| 1316 | |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1317 | rsl_rf_chan_release(lchan, 0, SACCH_NONE); |
| 1318 | } |
| 1319 | |
| 1320 | /* If T3109 expires the MS has not send a UA/UM do the error release */ |
| 1321 | static void t3109_expired(void *data) |
| 1322 | { |
| 1323 | struct gsm_lchan *lchan = data; |
| 1324 | |
| 1325 | LOGP(DRSL, LOGL_ERROR, |
| 1326 | "%s SACCH deactivation timeout.\n", gsm_lchan_name(lchan)); |
| 1327 | rsl_rf_chan_release(lchan, 1, SACCH_NONE); |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1328 | } |
| 1329 | |
laforge | cfa4a01 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1330 | #define GSM48_LEN2PLEN(a) (((a) << 2) | 1) |
| 1331 | |
Harald Welte | 2862dca | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1332 | /* Format an IMM ASS REJ according to 04.08 Chapter 9.1.20 */ |
| 1333 | static int rsl_send_imm_ass_rej(struct gsm_bts *bts, |
| 1334 | unsigned int num_req_refs, |
| 1335 | struct gsm48_req_ref *rqd_refs, |
| 1336 | uint8_t wait_ind) |
| 1337 | { |
| 1338 | uint8_t buf[GSM_MACBLOCK_LEN]; |
| 1339 | struct gsm48_imm_ass_rej *iar = (struct gsm48_imm_ass_rej *)buf; |
| 1340 | |
| 1341 | /* create IMMEDIATE ASSIGN REJECT 04.08 message */ |
| 1342 | memset(iar, 0, sizeof(*iar)); |
| 1343 | iar->proto_discr = GSM48_PDISC_RR; |
Andreas Eversberg | 75e13a4 | 2013-02-07 11:51:16 +0100 | [diff] [blame] | 1344 | iar->msg_type = GSM48_MT_RR_IMM_ASS_REJ; |
Harald Welte | 2862dca | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1345 | iar->page_mode = GSM48_PM_SAME; |
| 1346 | |
| 1347 | memcpy(&iar->req_ref1, &rqd_refs[0], sizeof(iar->req_ref1)); |
| 1348 | iar->wait_ind1 = wait_ind; |
| 1349 | |
| 1350 | if (num_req_refs >= 2) |
| 1351 | memcpy(&iar->req_ref2, &rqd_refs[1], sizeof(iar->req_ref2)); |
| 1352 | else |
| 1353 | memcpy(&iar->req_ref2, &rqd_refs[0], sizeof(iar->req_ref2)); |
| 1354 | iar->wait_ind2 = wait_ind; |
| 1355 | |
| 1356 | if (num_req_refs >= 3) |
| 1357 | memcpy(&iar->req_ref3, &rqd_refs[2], sizeof(iar->req_ref3)); |
| 1358 | else |
| 1359 | memcpy(&iar->req_ref3, &rqd_refs[0], sizeof(iar->req_ref3)); |
| 1360 | iar->wait_ind3 = wait_ind; |
| 1361 | |
| 1362 | if (num_req_refs >= 4) |
| 1363 | memcpy(&iar->req_ref4, &rqd_refs[3], sizeof(iar->req_ref4)); |
| 1364 | else |
| 1365 | memcpy(&iar->req_ref4, &rqd_refs[0], sizeof(iar->req_ref4)); |
| 1366 | iar->wait_ind4 = wait_ind; |
| 1367 | |
Andreas Eversberg | 75e13a4 | 2013-02-07 11:51:16 +0100 | [diff] [blame] | 1368 | /* we need to subtract 1 byte from sizeof(*iar) since ia includes the l2_plen field */ |
| 1369 | iar->l2_plen = GSM48_LEN2PLEN((sizeof(*iar)-1)); |
| 1370 | |
| 1371 | return rsl_imm_assign_cmd(bts, sizeof(*iar), (uint8_t *) iar); |
Harald Welte | 2862dca | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1372 | } |
| 1373 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1374 | /* MS has requested a channel on the RACH */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1375 | static int rsl_rx_chan_rqd(struct msgb *msg) |
| 1376 | { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1377 | struct e1inp_sign_link *sign_link = msg->dst; |
| 1378 | struct gsm_bts *bts = sign_link->trx->bts; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1379 | struct abis_rsl_dchan_hdr *rqd_hdr = msgb_l2(msg); |
| 1380 | struct gsm48_req_ref *rqd_ref; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1381 | enum gsm_chan_t lctype; |
Harald Welte | 2cbe092 | 2008-12-29 04:09:31 +0000 | [diff] [blame] | 1382 | enum gsm_chreq_reason_t chreq_reason; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1383 | struct gsm_lchan *lchan; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1384 | uint8_t rqd_ta; |
Holger Hans Peter Freyther | 457c2a8 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1385 | int is_lu; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1386 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1387 | uint16_t arfcn; |
Holger Hans Peter Freyther | c6d0a17 | 2012-02-03 20:10:13 +0100 | [diff] [blame] | 1388 | uint8_t subch; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1389 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1390 | /* parse request reference to be used in immediate assign */ |
| 1391 | if (rqd_hdr->data[0] != RSL_IE_REQ_REFERENCE) |
| 1392 | return -EINVAL; |
| 1393 | |
| 1394 | rqd_ref = (struct gsm48_req_ref *) &rqd_hdr->data[1]; |
| 1395 | |
| 1396 | /* parse access delay and use as TA */ |
| 1397 | if (rqd_hdr->data[sizeof(struct gsm48_req_ref)+1] != RSL_IE_ACCESS_DELAY) |
| 1398 | return -EINVAL; |
| 1399 | rqd_ta = rqd_hdr->data[sizeof(struct gsm48_req_ref)+2]; |
| 1400 | |
| 1401 | /* determine channel type (SDCCH/TCH_F/TCH_H) based on |
| 1402 | * request reference RA */ |
Holger Hans Peter Freyther | 7889107 | 2010-09-06 09:36:02 +0800 | [diff] [blame] | 1403 | lctype = get_ctype_by_chreq(bts->network, rqd_ref->ra); |
| 1404 | chreq_reason = get_reason_by_chreq(rqd_ref->ra, bts->network->neci); |
Harald Welte | 2cbe092 | 2008-12-29 04:09:31 +0000 | [diff] [blame] | 1405 | |
Pablo Neira Ayuso | dfb342c | 2011-05-06 12:13:10 +0200 | [diff] [blame] | 1406 | osmo_counter_inc(bts->network->stats.chreq.total); |
Harald Welte | 24ff6ee | 2009-12-22 00:41:05 +0100 | [diff] [blame] | 1407 | |
Holger Hans Peter Freyther | 457c2a8 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1408 | /* |
| 1409 | * We want LOCATION UPDATES to succeed and will assign a TCH |
| 1410 | * if we have no SDCCH available. |
| 1411 | */ |
| 1412 | is_lu = !!(chreq_reason == GSM_CHREQ_REASON_LOCATION_UPD); |
| 1413 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1414 | /* check availability / allocate channel */ |
Holger Hans Peter Freyther | 457c2a8 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1415 | lchan = lchan_alloc(bts, lctype, is_lu); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1416 | if (!lchan) { |
Harald Welte (local) | 2f5df85 | 2009-12-27 13:48:09 +0100 | [diff] [blame] | 1417 | LOGP(DRSL, LOGL_NOTICE, "BTS %d CHAN RQD: no resources for %s 0x%x\n", |
Harald Welte (local) | ccd8845 | 2009-12-27 18:05:25 +0100 | [diff] [blame] | 1418 | msg->lchan->ts->trx->bts->nr, gsm_lchant_name(lctype), rqd_ref->ra); |
Pablo Neira Ayuso | dfb342c | 2011-05-06 12:13:10 +0200 | [diff] [blame] | 1419 | osmo_counter_inc(bts->network->stats.chreq.no_channel); |
Harald Welte | 2862dca | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1420 | /* FIXME gather multiple CHAN RQD and reject up to 4 at the same time */ |
| 1421 | if (bts->network->T3122) |
| 1422 | rsl_send_imm_ass_rej(bts, 1, rqd_ref, bts->network->T3122 & 0xff); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1423 | return -ENOMEM; |
| 1424 | } |
| 1425 | |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1426 | if (lchan->state != LCHAN_S_NONE) |
| 1427 | LOGP(DRSL, LOGL_NOTICE, "%s lchan_alloc() returned channel " |
Harald Welte | 1887f9d | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1428 | "in state %s\n", gsm_lchan_name(lchan), |
| 1429 | gsm_lchans_name(lchan->state)); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1430 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1431 | /* save the RACH data as we need it after the CHAN ACT ACK */ |
| 1432 | lchan->rqd_ref = talloc_zero(bts, struct gsm48_req_ref); |
| 1433 | if (!lchan->rqd_ref) { |
| 1434 | LOGP(DRSL, LOGL_ERROR, "Failed to allocate gsm48_req_ref.\n"); |
| 1435 | lchan_free(lchan); |
| 1436 | return -ENOMEM; |
| 1437 | } |
| 1438 | |
Holger Hans Peter Freyther | c0a6674 | 2011-12-29 23:33:04 +0100 | [diff] [blame] | 1439 | rsl_lchan_set_state(lchan, LCHAN_S_ACT_REQ); |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1440 | memcpy(lchan->rqd_ref, rqd_ref, sizeof(*rqd_ref)); |
| 1441 | lchan->rqd_ta = rqd_ta; |
| 1442 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1443 | arfcn = lchan->ts->trx->arfcn; |
| 1444 | subch = lchan->nr; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1445 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 1446 | lchan->encr.alg_id = RSL_ENC_ALG_A5(0); /* no encryption */ |
Harald Welte (local) | 0e451d0 | 2009-08-13 10:14:26 +0200 | [diff] [blame] | 1447 | lchan->ms_power = ms_pwr_ctl_lvl(bts->band, bts->ms_max_power); |
Harald Welte | 0b2124b | 2009-08-10 00:45:40 +0200 | [diff] [blame] | 1448 | lchan->bs_power = 0; /* 0dB reduction, output power = Pn */ |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 1449 | lchan->rsl_cmode = RSL_CMOD_SPD_SIGN; |
Harald Welte | 196d052 | 2009-08-28 23:28:28 +0900 | [diff] [blame] | 1450 | lchan->tch_mode = GSM48_CMODE_SIGN; |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1451 | |
Harald Welte | e8bd9e8 | 2011-08-10 23:26:33 +0200 | [diff] [blame] | 1452 | /* Start another timer or assume the BTS sends a ACK/NACK? */ |
| 1453 | lchan->act_timer.cb = lchan_act_tmr_cb; |
| 1454 | lchan->act_timer.data = lchan; |
| 1455 | osmo_timer_schedule(&lchan->act_timer, 4, 0); |
| 1456 | |
Andreas Eversberg | 2957de9 | 2011-12-16 17:45:37 +0100 | [diff] [blame] | 1457 | DEBUGP(DRSL, "%s Activating ARFCN(%u) SS(%u) lctype %s " |
| 1458 | "r=%s ra=0x%02x ta=%d\n", gsm_lchan_name(lchan), arfcn, subch, |
| 1459 | gsm_lchant_name(lchan->type), gsm_chreq_name(chreq_reason), |
| 1460 | rqd_ref->ra, rqd_ta); |
| 1461 | |
| 1462 | /* BS11 requires TA shifted by 2 bits */ |
| 1463 | if (bts->type == GSM_BTS_TYPE_BS11) |
| 1464 | rqd_ta <<= 2; |
Harald Welte | 8d77b95 | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 1465 | rsl_chan_activate_lchan(lchan, 0x00, rqd_ta, 0); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1466 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1467 | return 0; |
| 1468 | } |
| 1469 | |
| 1470 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan) |
| 1471 | { |
| 1472 | struct gsm_bts *bts = lchan->ts->trx->bts; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1473 | uint8_t buf[GSM_MACBLOCK_LEN]; |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1474 | struct gsm48_imm_ass *ia = (struct gsm48_imm_ass *) buf; |
| 1475 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1476 | /* create IMMEDIATE ASSIGN 04.08 messge */ |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1477 | memset(ia, 0, sizeof(*ia)); |
laforge | cfa4a01 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1478 | /* we set ia->l2_plen once we know the length of the MA below */ |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1479 | ia->proto_discr = GSM48_PDISC_RR; |
| 1480 | ia->msg_type = GSM48_MT_RR_IMM_ASS; |
| 1481 | ia->page_mode = GSM48_PM_SAME; |
| 1482 | gsm48_lchan2chan_desc(&ia->chan_desc, lchan); |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1483 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1484 | /* use request reference extracted from CHAN_RQD */ |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1485 | memcpy(&ia->req_ref, lchan->rqd_ref, sizeof(ia->req_ref)); |
| 1486 | ia->timing_advance = lchan->rqd_ta; |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1487 | if (!lchan->ts->hopping.enabled) { |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1488 | ia->mob_alloc_len = 0; |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1489 | } else { |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1490 | ia->mob_alloc_len = lchan->ts->hopping.ma_len; |
| 1491 | memcpy(ia->mob_alloc, lchan->ts->hopping.ma_data, ia->mob_alloc_len); |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1492 | } |
Harald Welte | a1d39a2 | 2010-06-28 18:41:27 +0200 | [diff] [blame] | 1493 | /* we need to subtract 1 byte from sizeof(*ia) since ia includes the l2_plen field */ |
| 1494 | ia->l2_plen = GSM48_LEN2PLEN((sizeof(*ia)-1) + ia->mob_alloc_len); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1495 | |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1496 | /* Start timer T3101 to wait for GSM48_MT_RR_PAG_RESP */ |
| 1497 | lchan->T3101.cb = t3101_expired; |
| 1498 | lchan->T3101.data = lchan; |
Pablo Neira Ayuso | bf540cb | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1499 | osmo_timer_schedule(&lchan->T3101, bts->network->T3101, 0); |
Holger Freyther | 3186bf2 | 2008-12-29 06:23:49 +0000 | [diff] [blame] | 1500 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1501 | /* send IMMEDIATE ASSIGN CMD on RSL to BTS (to send on CCCH to MS) */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1502 | return rsl_imm_assign_cmd(bts, sizeof(*ia)+ia->mob_alloc_len, (uint8_t *) ia); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1503 | } |
| 1504 | |
Holger Hans Peter Freyther | 54fa2c7 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1505 | /* current load on the CCCH */ |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1506 | static int rsl_rx_ccch_load(struct msgb *msg) |
| 1507 | { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1508 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1509 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Holger Hans Peter Freyther | 54fa2c7 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1510 | struct ccch_signal_data sd; |
| 1511 | |
| 1512 | sd.bts = sign_link->trx->bts; |
| 1513 | sd.rach_slot_count = -1; |
| 1514 | sd.rach_busy_count = -1; |
| 1515 | sd.rach_access_count = -1; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1516 | |
| 1517 | switch (rslh->data[0]) { |
| 1518 | case RSL_IE_PAGING_LOAD: |
Holger Hans Peter Freyther | 54fa2c7 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1519 | sd.pg_buf_space = rslh->data[1] << 8 | rslh->data[2]; |
| 1520 | if (is_ipaccess_bts(sign_link->trx->bts) && sd.pg_buf_space == 0xffff) { |
Harald Welte | 38e9c82 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1521 | /* paging load below configured threshold, use 50 as default */ |
Holger Hans Peter Freyther | 54fa2c7 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1522 | sd.pg_buf_space = 50; |
Harald Welte | 38e9c82 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1523 | } |
Holger Hans Peter Freyther | 54fa2c7 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1524 | paging_update_buffer_space(sign_link->trx->bts, sd.pg_buf_space); |
| 1525 | osmo_signal_dispatch(SS_CCCH, S_CCCH_PAGING_LOAD, &sd); |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1526 | break; |
| 1527 | case RSL_IE_RACH_LOAD: |
Holger Freyther | 8c563cf | 2009-02-03 20:08:51 +0000 | [diff] [blame] | 1528 | if (msg->data_len >= 7) { |
Holger Hans Peter Freyther | 54fa2c7 | 2012-02-03 20:26:25 +0100 | [diff] [blame] | 1529 | sd.rach_slot_count = rslh->data[2] << 8 | rslh->data[3]; |
| 1530 | sd.rach_busy_count = rslh->data[4] << 8 | rslh->data[5]; |
| 1531 | sd.rach_access_count = rslh->data[6] << 8 | rslh->data[7]; |
| 1532 | osmo_signal_dispatch(SS_CCCH, S_CCCH_RACH_LOAD, &sd); |
Holger Freyther | 8c563cf | 2009-02-03 20:08:51 +0000 | [diff] [blame] | 1533 | } |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1534 | break; |
| 1535 | default: |
| 1536 | break; |
| 1537 | } |
| 1538 | |
| 1539 | return 0; |
| 1540 | } |
| 1541 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1542 | static int abis_rsl_rx_cchan(struct msgb *msg) |
| 1543 | { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1544 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1545 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1546 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1547 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1548 | msg->lchan = lchan_lookup(sign_link->trx, rslh->chan_nr); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1549 | |
| 1550 | switch (rslh->c.msg_type) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1551 | case RSL_MT_CHAN_RQD: |
| 1552 | /* MS has requested a channel on the RACH */ |
| 1553 | rc = rsl_rx_chan_rqd(msg); |
| 1554 | break; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1555 | case RSL_MT_CCCH_LOAD_IND: |
| 1556 | /* current load on the CCCH */ |
| 1557 | rc = rsl_rx_ccch_load(msg); |
| 1558 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1559 | case RSL_MT_DELETE_IND: |
| 1560 | /* CCCH overloaded, IMM_ASSIGN was dropped */ |
| 1561 | case RSL_MT_CBCH_LOAD_IND: |
| 1562 | /* current load on the CBCH */ |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1563 | LOGP(DRSL, LOGL_NOTICE, "Unimplemented Abis RSL TRX message " |
| 1564 | "type 0x%02x\n", rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1565 | break; |
| 1566 | default: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1567 | LOGP(DRSL, LOGL_NOTICE, "Unknown Abis RSL TRX message type " |
| 1568 | "0x%02x\n", rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1569 | return -EINVAL; |
| 1570 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1571 | |
| 1572 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1573 | } |
| 1574 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1575 | static int rsl_rx_rll_err_ind(struct msgb *msg) |
| 1576 | { |
Holger Hans Peter Freyther | 164ee30 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1577 | struct tlv_parsed tp; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1578 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Holger Hans Peter Freyther | 164ee30 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1579 | uint8_t rlm_cause; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1580 | |
Holger Hans Peter Freyther | 164ee30 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1581 | rsl_tlv_parse(&tp, rllh->data, msgb_l2len(msg) - sizeof(*rllh)); |
| 1582 | if (!TLVP_PRESENT(&tp, RSL_IE_RLM_CAUSE)) { |
| 1583 | LOGP(DRLL, LOGL_ERROR, |
| 1584 | "%s ERROR INDICATION without mandantory cause.\n", |
| 1585 | gsm_lchan_name(msg->lchan)); |
| 1586 | return -1; |
| 1587 | } |
| 1588 | |
| 1589 | rlm_cause = *TLVP_VAL(&tp, RSL_IE_RLM_CAUSE); |
Harald Welte (local) | 9538efc | 2009-12-26 23:55:00 +0100 | [diff] [blame] | 1590 | LOGP(DRLL, LOGL_ERROR, "%s ERROR INDICATION cause=%s\n", |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1591 | gsm_lchan_name(msg->lchan), |
Holger Hans Peter Freyther | 164ee30 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1592 | rsl_rlm_cause_name(rlm_cause)); |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1593 | |
| 1594 | rll_indication(msg->lchan, rllh->link_id, BSC_RLLR_IND_ERR_IND); |
Harald Welte (local) | 9538efc | 2009-12-26 23:55:00 +0100 | [diff] [blame] | 1595 | |
Holger Hans Peter Freyther | 164ee30 | 2013-01-16 21:07:43 +0100 | [diff] [blame] | 1596 | if (rlm_cause == RLL_CAUSE_T200_EXPIRED) { |
Pablo Neira Ayuso | dfb342c | 2011-05-06 12:13:10 +0200 | [diff] [blame] | 1597 | osmo_counter_inc(msg->lchan->ts->trx->bts->network->stats.chan.rll_err); |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1598 | return rsl_rf_chan_release(msg->lchan, 1, SACCH_DEACTIVATE); |
Holger Hans Peter Freyther | 3ba36d5 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1599 | } |
Harald Welte | 81543bc | 2009-07-04 09:40:05 +0200 | [diff] [blame] | 1600 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1601 | return 0; |
| 1602 | } |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1603 | |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1604 | static void rsl_handle_release(struct gsm_lchan *lchan) |
| 1605 | { |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1606 | int sapi; |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1607 | struct gsm_bts *bts; |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1608 | |
Holger Hans Peter Freyther | 9d50a27 | 2011-12-28 12:11:40 +0100 | [diff] [blame] | 1609 | /* |
| 1610 | * Maybe only one link/SAPI was releasd or the error handling |
| 1611 | * was activated. Just return now and let the other code handle |
| 1612 | * it. |
| 1613 | */ |
Holger Hans Peter Freyther | d7fd306 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1614 | if (lchan->state != LCHAN_S_REL_REQ) |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1615 | return; |
| 1616 | |
| 1617 | for (sapi = 0; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 1618 | if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) |
| 1619 | continue; |
Harald Welte | 3a3c277 | 2010-12-24 12:51:07 +0100 | [diff] [blame] | 1620 | LOGP(DRSL, LOGL_DEBUG, "%s waiting for SAPI=%d to be released.\n", |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1621 | gsm_lchan_name(lchan), sapi); |
| 1622 | return; |
| 1623 | } |
| 1624 | |
Holger Hans Peter Freyther | d7fd306 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1625 | |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 1626 | /* Stop T3109 and wait for T3111 before re-using the channel */ |
| 1627 | osmo_timer_del(&lchan->T3109); |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1628 | lchan->T3111.cb = t3111_expired; |
| 1629 | lchan->T3111.data = lchan; |
| 1630 | bts = lchan->ts->trx->bts; |
Pablo Neira Ayuso | bf540cb | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1631 | osmo_timer_schedule(&lchan->T3111, bts->network->T3111, 0); |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1632 | } |
| 1633 | |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1634 | /* ESTABLISH INDICATION, LOCATION AREA UPDATE REQUEST |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1635 | 0x02, 0x06, |
| 1636 | 0x01, 0x20, |
| 1637 | 0x02, 0x00, |
| 1638 | 0x0b, 0x00, 0x0f, 0x05, 0x08, ... */ |
| 1639 | |
| 1640 | static int abis_rsl_rx_rll(struct msgb *msg) |
| 1641 | { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1642 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1643 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1644 | int rc = 0; |
| 1645 | char *ts_name; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1646 | uint8_t sapi = rllh->link_id & 7; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1647 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1648 | msg->lchan = lchan_lookup(sign_link->trx, rllh->chan_nr); |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1649 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1650 | DEBUGP(DRLL, "%s SAPI=%u ", ts_name, sapi); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1651 | |
| 1652 | switch (rllh->c.msg_type) { |
| 1653 | case RSL_MT_DATA_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1654 | DEBUGPC(DRLL, "DATA INDICATION\n"); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1655 | if (msgb_l2len(msg) > |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1656 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1657 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1658 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | daef606 | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1659 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1660 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1661 | break; |
| 1662 | case RSL_MT_EST_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1663 | DEBUGPC(DRLL, "ESTABLISH INDICATION\n"); |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1664 | /* lchan is established, stop T3101 */ |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1665 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_MS; |
Pablo Neira Ayuso | bf540cb | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 1666 | osmo_timer_del(&msg->lchan->T3101); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1667 | if (msgb_l2len(msg) > |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1668 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1669 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1670 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | daef606 | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1671 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1672 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1673 | break; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1674 | case RSL_MT_EST_CONF: |
Harald Welte | 1c40927 | 2009-08-09 14:13:58 +0200 | [diff] [blame] | 1675 | DEBUGPC(DRLL, "ESTABLISH CONFIRM\n"); |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1676 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_NET; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1677 | rll_indication(msg->lchan, rllh->link_id, |
| 1678 | BSC_RLLR_IND_EST_CONF); |
| 1679 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1680 | case RSL_MT_REL_IND: |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1681 | /* BTS informs us of having received DISC from MS */ |
Harald Welte | 602f2b8 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1682 | DEBUGPC(DRLL, "RELEASE INDICATION\n"); |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1683 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1684 | rll_indication(msg->lchan, rllh->link_id, |
| 1685 | BSC_RLLR_IND_REL_IND); |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1686 | rsl_handle_release(msg->lchan); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1687 | break; |
| 1688 | case RSL_MT_REL_CONF: |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1689 | /* BTS informs us of having received UA from MS, |
| 1690 | * in response to DISC that we've sent earlier */ |
Harald Welte | 602f2b8 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1691 | DEBUGPC(DRLL, "RELEASE CONFIRMATION\n"); |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1692 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1693 | rsl_handle_release(msg->lchan); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1694 | break; |
| 1695 | case RSL_MT_ERROR_IND: |
| 1696 | rc = rsl_rx_rll_err_ind(msg); |
| 1697 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1698 | case RSL_MT_UNIT_DATA_IND: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1699 | LOGP(DRLL, LOGL_NOTICE, "unimplemented Abis RLL message " |
| 1700 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1701 | break; |
| 1702 | default: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1703 | LOGP(DRLL, LOGL_NOTICE, "unknown Abis RLL message " |
| 1704 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1705 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1706 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1707 | } |
| 1708 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1709 | static uint8_t ipa_smod_s_for_lchan(struct gsm_lchan *lchan) |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1710 | { |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1711 | switch (lchan->tch_mode) { |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1712 | case GSM48_CMODE_SPEECH_V1: |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1713 | switch (lchan->type) { |
| 1714 | case GSM_LCHAN_TCH_F: |
| 1715 | return 0x00; |
| 1716 | case GSM_LCHAN_TCH_H: |
| 1717 | return 0x03; |
| 1718 | default: |
| 1719 | break; |
| 1720 | } |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1721 | case GSM48_CMODE_SPEECH_EFR: |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1722 | switch (lchan->type) { |
| 1723 | case GSM_LCHAN_TCH_F: |
| 1724 | return 0x01; |
| 1725 | /* there's no half-rate EFR */ |
| 1726 | default: |
| 1727 | break; |
| 1728 | } |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1729 | case GSM48_CMODE_SPEECH_AMR: |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1730 | switch (lchan->type) { |
| 1731 | case GSM_LCHAN_TCH_F: |
| 1732 | return 0x02; |
| 1733 | case GSM_LCHAN_TCH_H: |
| 1734 | return 0x05; |
| 1735 | default: |
| 1736 | break; |
| 1737 | } |
| 1738 | default: |
| 1739 | break; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1740 | } |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1741 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access speech mode for " |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1742 | "tch_mode == 0x%02x\n", lchan->tch_mode); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1743 | return 0; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1744 | } |
| 1745 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1746 | static uint8_t ipa_rtp_pt_for_lchan(struct gsm_lchan *lchan) |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1747 | { |
| 1748 | switch (lchan->tch_mode) { |
| 1749 | case GSM48_CMODE_SPEECH_V1: |
| 1750 | switch (lchan->type) { |
| 1751 | case GSM_LCHAN_TCH_F: |
| 1752 | return RTP_PT_GSM_FULL; |
| 1753 | case GSM_LCHAN_TCH_H: |
| 1754 | return RTP_PT_GSM_HALF; |
| 1755 | default: |
| 1756 | break; |
| 1757 | } |
| 1758 | case GSM48_CMODE_SPEECH_EFR: |
| 1759 | switch (lchan->type) { |
| 1760 | case GSM_LCHAN_TCH_F: |
| 1761 | return RTP_PT_GSM_EFR; |
| 1762 | /* there's no half-rate EFR */ |
| 1763 | default: |
| 1764 | break; |
| 1765 | } |
| 1766 | case GSM48_CMODE_SPEECH_AMR: |
| 1767 | switch (lchan->type) { |
| 1768 | case GSM_LCHAN_TCH_F: |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1769 | case GSM_LCHAN_TCH_H: |
Holger Hans Peter Freyther | ed999b2 | 2011-07-21 10:24:46 +0200 | [diff] [blame] | 1770 | return RTP_PT_AMR; |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1771 | default: |
| 1772 | break; |
| 1773 | } |
| 1774 | default: |
| 1775 | break; |
| 1776 | } |
| 1777 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access rtp payload type for " |
| 1778 | "tch_mode == 0x%02x\n & lchan_type == %d", |
| 1779 | lchan->tch_mode, lchan->type); |
| 1780 | return 0; |
| 1781 | } |
| 1782 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1783 | /* ip.access specific RSL extensions */ |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1784 | static void ipac_parse_rtp(struct gsm_lchan *lchan, struct tlv_parsed *tv) |
| 1785 | { |
| 1786 | struct in_addr ip; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1787 | uint16_t port, conn_id; |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1788 | |
| 1789 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_IP)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1790 | ip.s_addr = *((uint32_t *) TLVP_VAL(tv, RSL_IE_IPAC_LOCAL_IP)); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1791 | DEBUGPC(DRSL, "LOCAL_IP=%s ", inet_ntoa(ip)); |
| 1792 | lchan->abis_ip.bound_ip = ntohl(ip.s_addr); |
| 1793 | } |
| 1794 | |
| 1795 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_PORT)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1796 | port = *((uint16_t *) TLVP_VAL(tv, RSL_IE_IPAC_LOCAL_PORT)); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1797 | port = ntohs(port); |
| 1798 | DEBUGPC(DRSL, "LOCAL_PORT=%u ", port); |
| 1799 | lchan->abis_ip.bound_port = port; |
| 1800 | } |
| 1801 | |
| 1802 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_CONN_ID)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1803 | conn_id = *((uint16_t *) TLVP_VAL(tv, RSL_IE_IPAC_CONN_ID)); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1804 | conn_id = ntohs(conn_id); |
| 1805 | DEBUGPC(DRSL, "CON_ID=%u ", conn_id); |
| 1806 | lchan->abis_ip.conn_id = conn_id; |
| 1807 | } |
| 1808 | |
| 1809 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_RTP_PAYLOAD2)) { |
| 1810 | lchan->abis_ip.rtp_payload2 = |
| 1811 | *TLVP_VAL(tv, RSL_IE_IPAC_RTP_PAYLOAD2); |
| 1812 | DEBUGPC(DRSL, "RTP_PAYLOAD2=0x%02x ", |
| 1813 | lchan->abis_ip.rtp_payload2); |
| 1814 | } |
| 1815 | |
| 1816 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_SPEECH_MODE)) { |
| 1817 | lchan->abis_ip.speech_mode = |
| 1818 | *TLVP_VAL(tv, RSL_IE_IPAC_SPEECH_MODE); |
| 1819 | DEBUGPC(DRSL, "speech_mode=0x%02x ", |
| 1820 | lchan->abis_ip.speech_mode); |
| 1821 | } |
| 1822 | |
| 1823 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_IP)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1824 | ip.s_addr = *((uint32_t *) TLVP_VAL(tv, RSL_IE_IPAC_REMOTE_IP)); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1825 | DEBUGPC(DRSL, "REMOTE_IP=%s ", inet_ntoa(ip)); |
| 1826 | lchan->abis_ip.connect_ip = ntohl(ip.s_addr); |
| 1827 | } |
| 1828 | |
| 1829 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_PORT)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1830 | port = *((uint16_t *) TLVP_VAL(tv, RSL_IE_IPAC_REMOTE_PORT)); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1831 | port = ntohs(port); |
| 1832 | DEBUGPC(DRSL, "REMOTE_PORT=%u ", port); |
| 1833 | lchan->abis_ip.connect_port = port; |
| 1834 | } |
| 1835 | } |
| 1836 | |
Harald Welte | 647db84 | 2013-02-03 12:06:58 +0100 | [diff] [blame] | 1837 | /*! \brief Issue IPA RSL CRCX to configure RTP on BTS side |
| 1838 | * \param[in] lchan Logical Channel for which we issue CRCX |
| 1839 | */ |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1840 | int rsl_ipacc_crcx(struct gsm_lchan *lchan) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1841 | { |
| 1842 | struct msgb *msg = rsl_msgb_alloc(); |
| 1843 | struct abis_rsl_dchan_hdr *dh; |
| 1844 | |
| 1845 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1846 | init_dchan_hdr(dh, RSL_MT_IPAC_CRCX); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1847 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1848 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1849 | |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1850 | /* 0x1- == receive-only, 0x-1 == EFR codec */ |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1851 | lchan->abis_ip.speech_mode = 0x10 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1852 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1853 | msgb_tv_put(msg, RSL_IE_IPAC_SPEECH_MODE, lchan->abis_ip.speech_mode); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1854 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD, lchan->abis_ip.rtp_payload); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1855 | |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1856 | DEBUGP(DRSL, "%s IPAC_BIND speech_mode=0x%02x RTP_PAYLOAD=%d\n", |
| 1857 | gsm_lchan_name(lchan), lchan->abis_ip.speech_mode, |
| 1858 | lchan->abis_ip.rtp_payload); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1859 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1860 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1861 | |
| 1862 | return abis_rsl_sendmsg(msg); |
| 1863 | } |
| 1864 | |
Harald Welte | 647db84 | 2013-02-03 12:06:58 +0100 | [diff] [blame] | 1865 | /*! \brief Issue IPA RSL MDCX to configure MGW-side of RTP |
| 1866 | * \param[in] lchan Logical Channel for which we issue MDCX |
| 1867 | * \param[in] ip Remote (MGW) IP address for RTP |
| 1868 | * \param[in] port Remote (MGW) UDP port number for RTP |
| 1869 | * \param[in] rtp_payload2 Contents of RTP PAYLOAD 2 IE |
| 1870 | */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1871 | int rsl_ipacc_mdcx(struct gsm_lchan *lchan, uint32_t ip, uint16_t port, |
| 1872 | uint8_t rtp_payload2) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1873 | { |
| 1874 | struct msgb *msg = rsl_msgb_alloc(); |
| 1875 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1876 | uint32_t *att_ip; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1877 | struct in_addr ia; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1878 | |
| 1879 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1880 | init_dchan_hdr(dh, RSL_MT_IPAC_MDCX); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1881 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1882 | dh->chan_nr = gsm_lchan2chan_nr(lchan); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1883 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1884 | /* we need to store these now as MDCX_ACK does not return them :( */ |
| 1885 | lchan->abis_ip.rtp_payload2 = rtp_payload2; |
| 1886 | lchan->abis_ip.connect_port = port; |
| 1887 | lchan->abis_ip.connect_ip = ip; |
| 1888 | |
Harald Welte | 58ca5b7 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 1889 | /* 0x0- == both directions, 0x-1 == EFR codec */ |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1890 | lchan->abis_ip.speech_mode = 0x00 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1891 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | 58ca5b7 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 1892 | |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1893 | ia.s_addr = htonl(ip); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1894 | DEBUGP(DRSL, "%s IPAC_MDCX IP=%s PORT=%d RTP_PAYLOAD=%d RTP_PAYLOAD2=%d " |
| 1895 | "CONN_ID=%d speech_mode=0x%02x\n", gsm_lchan_name(lchan), |
| 1896 | inet_ntoa(ia), port, lchan->abis_ip.rtp_payload, rtp_payload2, |
| 1897 | lchan->abis_ip.conn_id, lchan->abis_ip.speech_mode); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1898 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1899 | msgb_tv16_put(msg, RSL_IE_IPAC_CONN_ID, lchan->abis_ip.conn_id); |
| 1900 | msgb_v_put(msg, RSL_IE_IPAC_REMOTE_IP); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1901 | att_ip = (uint32_t *) msgb_put(msg, sizeof(ip)); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1902 | *att_ip = ia.s_addr; |
| 1903 | msgb_tv16_put(msg, RSL_IE_IPAC_REMOTE_PORT, port); |
| 1904 | msgb_tv_put(msg, RSL_IE_IPAC_SPEECH_MODE, lchan->abis_ip.speech_mode); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1905 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD, lchan->abis_ip.rtp_payload); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1906 | if (rtp_payload2) |
| 1907 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD2, rtp_payload2); |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1908 | |
| 1909 | msg->dst = lchan->ts->trx->rsl_link; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1910 | |
| 1911 | return abis_rsl_sendmsg(msg); |
| 1912 | } |
| 1913 | |
Harald Welte | a72273e | 2009-12-20 16:51:09 +0100 | [diff] [blame] | 1914 | /* tell BTS to connect RTP stream to our local RTP socket */ |
| 1915 | int rsl_ipacc_mdcx_to_rtpsock(struct gsm_lchan *lchan) |
| 1916 | { |
| 1917 | struct rtp_socket *rs = lchan->abis_ip.rtp_socket; |
| 1918 | int rc; |
| 1919 | |
| 1920 | rc = rsl_ipacc_mdcx(lchan, ntohl(rs->rtp.sin_local.sin_addr.s_addr), |
| 1921 | ntohs(rs->rtp.sin_local.sin_port), |
| 1922 | /* FIXME: use RTP payload of bound socket, not BTS*/ |
| 1923 | lchan->abis_ip.rtp_payload2); |
| 1924 | |
| 1925 | return rc; |
| 1926 | } |
| 1927 | |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 1928 | int rsl_ipacc_pdch_activate(struct gsm_bts_trx_ts *ts, int act) |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1929 | { |
| 1930 | struct msgb *msg = rsl_msgb_alloc(); |
| 1931 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1932 | uint8_t msg_type; |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1933 | |
| 1934 | if (act) |
| 1935 | msg_type = RSL_MT_IPAC_PDCH_ACT; |
| 1936 | else |
| 1937 | msg_type = RSL_MT_IPAC_PDCH_DEACT; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1938 | |
| 1939 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1940 | init_dchan_hdr(dh, msg_type); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1941 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | f6093a4 | 2011-06-25 10:02:33 +0200 | [diff] [blame] | 1942 | dh->chan_nr = gsm_ts2chan_nr(ts, 0); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1943 | |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 1944 | DEBUGP(DRSL, "%s IPAC_PDCH_%sACT\n", gsm_ts_name(ts), |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1945 | act ? "" : "DE"); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1946 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 1947 | msg->dst = ts->trx->rsl_link; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1948 | |
| 1949 | return abis_rsl_sendmsg(msg); |
| 1950 | } |
| 1951 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1952 | static int abis_rsl_rx_ipacc_crcx_ack(struct msgb *msg) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1953 | { |
| 1954 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1955 | struct tlv_parsed tv; |
Harald Welte | 2c82899 | 2009-12-02 01:56:49 +0530 | [diff] [blame] | 1956 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1957 | |
| 1958 | /* the BTS has acknowledged a local bind, it now tells us the IP |
| 1959 | * address and port number to which it has bound the given logical |
| 1960 | * channel */ |
| 1961 | |
| 1962 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1963 | if (!TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_PORT) || |
| 1964 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_IP) || |
Harald Welte | 86c162d | 2009-07-12 09:45:05 +0200 | [diff] [blame] | 1965 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_CONN_ID)) { |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1966 | LOGP(DRSL, LOGL_NOTICE, "mandatory IE missing"); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1967 | return -EINVAL; |
| 1968 | } |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1969 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1970 | ipac_parse_rtp(lchan, &tv); |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1971 | |
Pablo Neira Ayuso | bbc5b99 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 1972 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_CRCX_ACK, msg->lchan); |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 1973 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1974 | return 0; |
| 1975 | } |
| 1976 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1977 | static int abis_rsl_rx_ipacc_mdcx_ack(struct msgb *msg) |
| 1978 | { |
| 1979 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1980 | struct tlv_parsed tv; |
| 1981 | struct gsm_lchan *lchan = msg->lchan; |
| 1982 | |
| 1983 | /* the BTS has acknowledged a remote connect request and |
| 1984 | * it now tells us the IP address and port number to which it has |
| 1985 | * connected the given logical channel */ |
| 1986 | |
| 1987 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1988 | ipac_parse_rtp(lchan, &tv); |
Pablo Neira Ayuso | bbc5b99 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 1989 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_MDCX_ACK, msg->lchan); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1990 | |
| 1991 | return 0; |
| 1992 | } |
| 1993 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1994 | static int abis_rsl_rx_ipacc_dlcx_ind(struct msgb *msg) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1995 | { |
| 1996 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1997 | struct tlv_parsed tv; |
| 1998 | |
| 1999 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2000 | |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 2001 | if (TLVP_PRESENT(&tv, RSL_IE_CAUSE)) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2002 | print_rsl_cause(LOGL_DEBUG, TLVP_VAL(&tv, RSL_IE_CAUSE), |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 2003 | TLVP_LEN(&tv, RSL_IE_CAUSE)); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2004 | |
Pablo Neira Ayuso | bbc5b99 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 2005 | osmo_signal_dispatch(SS_ABISIP, S_ABISIP_DLCX_IND, msg->lchan); |
Harald Welte | 888b114 | 2009-07-28 18:02:05 +0200 | [diff] [blame] | 2006 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2007 | return 0; |
| 2008 | } |
| 2009 | |
| 2010 | static int abis_rsl_rx_ipacc(struct msgb *msg) |
| 2011 | { |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2012 | struct e1inp_sign_link *sign_link = msg->dst; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2013 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2014 | char *ts_name; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2015 | int rc = 0; |
| 2016 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2017 | msg->lchan = lchan_lookup(sign_link->trx, rllh->chan_nr); |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 2018 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2019 | |
| 2020 | switch (rllh->c.msg_type) { |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2021 | case RSL_MT_IPAC_CRCX_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2022 | DEBUGP(DRSL, "%s IPAC_CRCX_ACK ", ts_name); |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2023 | rc = abis_rsl_rx_ipacc_crcx_ack(msg); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2024 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2025 | case RSL_MT_IPAC_CRCX_NACK: |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2026 | /* somehow the BTS was unable to bind the lchan to its local |
| 2027 | * port?!? */ |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2028 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_CRCX_NACK\n", ts_name); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2029 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2030 | case RSL_MT_IPAC_MDCX_ACK: |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2031 | /* the BTS tells us that a connect operation was successful */ |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2032 | DEBUGP(DRSL, "%s IPAC_MDCX_ACK ", ts_name); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 2033 | rc = abis_rsl_rx_ipacc_mdcx_ack(msg); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2034 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2035 | case RSL_MT_IPAC_MDCX_NACK: |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2036 | /* somehow the BTS was unable to connect the lchan to a remote |
| 2037 | * port */ |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2038 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_MDCX_NACK\n", ts_name); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2039 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2040 | case RSL_MT_IPAC_DLCX_IND: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2041 | DEBUGP(DRSL, "%s IPAC_DLCX_IND ", ts_name); |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 2042 | rc = abis_rsl_rx_ipacc_dlcx_ind(msg); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2043 | break; |
| 2044 | default: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 2045 | LOGP(DRSL, LOGL_NOTICE, "Unknown ip.access msg_type 0x%02x\n", |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2046 | rllh->c.msg_type); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2047 | break; |
| 2048 | } |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 2049 | DEBUGPC(DRSL, "\n"); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2050 | |
| 2051 | return rc; |
| 2052 | } |
| 2053 | |
| 2054 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2055 | /* Entry-point where L2 RSL from BTS enters */ |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 2056 | int abis_rsl_rcvmsg(struct msgb *msg) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2057 | { |
Holger Hans Peter Freyther | 19bab73 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2058 | struct abis_rsl_common_hdr *rslh; |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 2059 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2060 | |
Holger Hans Peter Freyther | 19bab73 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2061 | if (!msg) { |
| 2062 | DEBUGP(DRSL, "Empty RSL msg?..\n"); |
| 2063 | return -1; |
| 2064 | } |
| 2065 | |
| 2066 | if (msgb_l2len(msg) < sizeof(*rslh)) { |
| 2067 | DEBUGP(DRSL, "Truncated RSL message with l2len: %u\n", msgb_l2len(msg)); |
Harald Welte | f25b55e | 2012-05-31 20:22:34 +0200 | [diff] [blame] | 2068 | msgb_free(msg); |
Holger Hans Peter Freyther | 19bab73 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 2069 | return -1; |
| 2070 | } |
| 2071 | |
| 2072 | rslh = msgb_l2(msg); |
| 2073 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2074 | switch (rslh->msg_discr & 0xfe) { |
| 2075 | case ABIS_RSL_MDISC_RLL: |
| 2076 | rc = abis_rsl_rx_rll(msg); |
| 2077 | break; |
| 2078 | case ABIS_RSL_MDISC_DED_CHAN: |
| 2079 | rc = abis_rsl_rx_dchan(msg); |
| 2080 | break; |
| 2081 | case ABIS_RSL_MDISC_COM_CHAN: |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2082 | rc = abis_rsl_rx_cchan(msg); |
| 2083 | break; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 2084 | case ABIS_RSL_MDISC_TRX: |
| 2085 | rc = abis_rsl_rx_trx(msg); |
| 2086 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2087 | case ABIS_RSL_MDISC_LOC: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2088 | LOGP(DRSL, LOGL_NOTICE, "unimplemented RSL msg disc 0x%02x\n", |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 2089 | rslh->msg_discr); |
| 2090 | break; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 2091 | case ABIS_RSL_MDISC_IPACCESS: |
| 2092 | rc = abis_rsl_rx_ipacc(msg); |
| 2093 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2094 | default: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 2095 | LOGP(DRSL, LOGL_NOTICE, "unknown RSL message discriminator " |
| 2096 | "0x%02x\n", rslh->msg_discr); |
Harald Welte | f25b55e | 2012-05-31 20:22:34 +0200 | [diff] [blame] | 2097 | rc = -EINVAL; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2098 | } |
Harald Welte | 4f4a390 | 2008-12-26 00:04:49 +0000 | [diff] [blame] | 2099 | msgb_free(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 2100 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2101 | } |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 2102 | |
Holger Hans Peter Freyther | 8cb4a0f | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 2103 | int rsl_sms_cb_command(struct gsm_bts *bts, uint8_t chan_number, |
| 2104 | uint8_t cb_command, const uint8_t *data, int len) |
| 2105 | { |
| 2106 | struct abis_rsl_dchan_hdr *dh; |
| 2107 | struct msgb *cb_cmd; |
| 2108 | |
| 2109 | cb_cmd = rsl_msgb_alloc(); |
| 2110 | if (!cb_cmd) |
| 2111 | return -1; |
| 2112 | |
| 2113 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(cb_cmd, sizeof*dh); |
| 2114 | init_dchan_hdr(dh, RSL_MT_SMS_BC_CMD); |
| 2115 | dh->chan_nr = RSL_CHAN_SDCCH4_ACCH; /* TODO: check the chan config */ |
| 2116 | |
| 2117 | msgb_tv_put(cb_cmd, RSL_IE_CB_CMD_TYPE, cb_command); |
| 2118 | msgb_tlv_put(cb_cmd, RSL_IE_SMSCB_MSG, len, data); |
| 2119 | |
| 2120 | cb_cmd->trx = bts->c0; |
| 2121 | |
| 2122 | return abis_rsl_sendmsg(cb_cmd); |
| 2123 | } |
Dieter Spaar | 1664602 | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2124 | |
| 2125 | int rsl_nokia_si_begin(struct gsm_bts_trx *trx) |
| 2126 | { |
| 2127 | struct abis_rsl_common_hdr *ch; |
| 2128 | struct msgb *msg = rsl_msgb_alloc(); |
| 2129 | |
| 2130 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2131 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 2132 | ch->msg_type = 0x40; /* Nokia SI Begin */ |
| 2133 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2134 | msg->dst = trx->rsl_link; |
Dieter Spaar | 1664602 | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2135 | |
| 2136 | return abis_rsl_sendmsg(msg); |
| 2137 | } |
| 2138 | |
| 2139 | int rsl_nokia_si_end(struct gsm_bts_trx *trx) |
| 2140 | { |
| 2141 | struct abis_rsl_common_hdr *ch; |
| 2142 | struct msgb *msg = rsl_msgb_alloc(); |
| 2143 | |
| 2144 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2145 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 2146 | ch->msg_type = 0x41; /* Nokia SI End */ |
| 2147 | |
| 2148 | msgb_tv_put(msg, 0xFD, 0x00); /* Nokia Pagemode Info, No paging reorganisation required */ |
| 2149 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2150 | msg->dst = trx->rsl_link; |
Dieter Spaar | 1664602 | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2151 | |
| 2152 | return abis_rsl_sendmsg(msg); |
| 2153 | } |
| 2154 | |
| 2155 | int rsl_bs_power_control(struct gsm_bts_trx *trx, uint8_t channel, uint8_t reduction) |
| 2156 | { |
| 2157 | struct abis_rsl_common_hdr *ch; |
| 2158 | struct msgb *msg = rsl_msgb_alloc(); |
| 2159 | |
| 2160 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 2161 | ch->msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
| 2162 | ch->msg_type = RSL_MT_BS_POWER_CONTROL; |
| 2163 | |
| 2164 | msgb_tv_put(msg, RSL_IE_CHAN_NR, channel); |
| 2165 | msgb_tv_put(msg, RSL_IE_BS_POWER, reduction); /* reduction in 2dB steps */ |
| 2166 | |
Pablo Neira Ayuso | 7abecfc | 2011-08-17 22:43:54 +0200 | [diff] [blame] | 2167 | msg->dst = trx->rsl_link; |
Dieter Spaar | 1664602 | 2011-07-28 00:01:50 +0200 | [diff] [blame] | 2168 | |
| 2169 | return abis_rsl_sendmsg(msg); |
| 2170 | } |
Holger Hans Peter Freyther | 8582535 | 2011-12-27 22:24:17 +0100 | [diff] [blame] | 2171 | |
| 2172 | /** |
| 2173 | * Release all allocated SAPIs starting from @param start and |
| 2174 | * release them with the given release mode. Once the release |
| 2175 | * confirmation arrives it will be attempted to release the |
| 2176 | * the RF channel. |
| 2177 | */ |
| 2178 | int rsl_release_sapis_from(struct gsm_lchan *lchan, int start, |
| 2179 | enum rsl_rel_mode release_mode) |
| 2180 | { |
| 2181 | int no_sapi = 1; |
| 2182 | int sapi; |
| 2183 | |
| 2184 | for (sapi = start; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 2185 | uint8_t link_id; |
| 2186 | if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) |
| 2187 | continue; |
| 2188 | |
| 2189 | link_id = sapi; |
| 2190 | if (lchan->type == GSM_LCHAN_TCH_F || lchan->type == GSM_LCHAN_TCH_H) |
| 2191 | link_id |= 0x40; |
| 2192 | rsl_release_request(lchan, link_id, release_mode); |
| 2193 | no_sapi = 0; |
| 2194 | } |
| 2195 | |
| 2196 | return no_sapi; |
| 2197 | } |
Holger Hans Peter Freyther | b348939 | 2011-12-28 16:21:05 +0100 | [diff] [blame] | 2198 | |
| 2199 | int rsl_start_t3109(struct gsm_lchan *lchan) |
| 2200 | { |
| 2201 | struct gsm_bts *bts = lchan->ts->trx->bts; |
| 2202 | |
| 2203 | /* Disabled, mostly legacy code */ |
| 2204 | if (bts->network->T3109 == 0) |
| 2205 | return -1; |
| 2206 | |
| 2207 | lchan->T3109.cb = t3109_expired; |
| 2208 | lchan->T3109.data = lchan; |
| 2209 | osmo_timer_schedule(&lchan->T3109, bts->network->T3109, 0); |
| 2210 | return 0; |
| 2211 | } |
Holger Hans Peter Freyther | 006e3d8 | 2012-12-25 23:45:14 +0100 | [diff] [blame] | 2212 | |
| 2213 | /** |
| 2214 | * \brief directly RF Channel Release the lchan |
| 2215 | * |
| 2216 | * When no SAPI was allocated, directly release the logical channel. This |
| 2217 | * should only be called from chan_alloc.c on channel release handling. In |
| 2218 | * case no SAPI was established the RF Channel can be directly released, |
| 2219 | */ |
| 2220 | int rsl_direct_rf_release(struct gsm_lchan *lchan) |
| 2221 | { |
| 2222 | int i; |
| 2223 | for (i = 0; i < ARRAY_SIZE(lchan->sapis); ++i) { |
| 2224 | if (lchan->sapis[i] != LCHAN_SAPI_UNUSED) { |
| 2225 | LOGP(DRSL, LOGL_ERROR, "%s SAPI(%d) still allocated.\n", |
| 2226 | gsm_lchan_name(lchan), i); |
| 2227 | return -1; |
| 2228 | } |
| 2229 | } |
| 2230 | |
| 2231 | /* Now release it */ |
| 2232 | return rsl_rf_chan_release(lchan, 0, SACCH_NONE); |
| 2233 | } |