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> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 5 | * |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 6 | * All Rights Reserved |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 9 | * it under the terms of the GNU Affero General Public License as published by |
| 10 | * the Free Software Foundation; either version 3 of the License, or |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 16 | * GNU Affero General Public License for more details. |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 17 | * |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 18 | * You should have received a copy of the GNU Affero General Public License |
| 19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 20 | * |
| 21 | */ |
| 22 | |
| 23 | #include <stdio.h> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 24 | #include <stdlib.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 25 | #include <errno.h> |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 26 | #include <netinet/in.h> |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 27 | #include <arpa/inet.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 28 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 29 | #include <openbsc/gsm_data.h> |
| 30 | #include <openbsc/gsm_04_08.h> |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 31 | #include <osmocom/gsm/gsm_utils.h> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 32 | #include <openbsc/abis_rsl.h> |
| 33 | #include <openbsc/chan_alloc.h> |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 34 | #include <openbsc/bsc_rll.h> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 35 | #include <openbsc/debug.h> |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 36 | #include <osmocom/gsm/tlv.h> |
Holger Freyther | 392209c | 2009-02-10 00:06:19 +0000 | [diff] [blame] | 37 | #include <openbsc/paging.h> |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 38 | #include <openbsc/signal.h> |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 39 | #include <openbsc/meas_rep.h> |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 40 | #include <openbsc/rtp_proxy.h> |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 41 | #include <osmocom/gsm/rsl.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 42 | |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 43 | #include <osmocom/core/talloc.h> |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 44 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 45 | #define RSL_ALLOC_SIZE 1024 |
| 46 | #define RSL_ALLOC_HEADROOM 128 |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 47 | |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 48 | #define MAX(a, b) (a) >= (b) ? (a) : (b) |
| 49 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 50 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan); |
| 51 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 52 | static void send_lchan_signal(int sig_no, struct gsm_lchan *lchan, |
| 53 | struct gsm_meas_rep *resp) |
| 54 | { |
| 55 | struct lchan_signal_data sig; |
| 56 | sig.lchan = lchan; |
| 57 | sig.mr = resp; |
| 58 | dispatch_signal(SS_LCHAN, sig_no, &sig); |
| 59 | } |
| 60 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 61 | static uint8_t mdisc_by_msgtype(uint8_t msg_type) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 62 | { |
| 63 | /* mask off the transparent bit ? */ |
| 64 | msg_type &= 0xfe; |
| 65 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 66 | if ((msg_type & 0xf0) == 0x00) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 67 | return ABIS_RSL_MDISC_RLL; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 68 | if ((msg_type & 0xf0) == 0x10) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 69 | if (msg_type >= 0x19 && msg_type <= 0x22) |
| 70 | return ABIS_RSL_MDISC_TRX; |
| 71 | else |
| 72 | return ABIS_RSL_MDISC_COM_CHAN; |
| 73 | } |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 74 | if ((msg_type & 0xe0) == 0x20) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 75 | return ABIS_RSL_MDISC_DED_CHAN; |
| 76 | |
| 77 | return ABIS_RSL_MDISC_LOC; |
| 78 | } |
| 79 | |
| 80 | 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] | 81 | uint8_t msg_type) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 82 | { |
| 83 | dh->c.msg_discr = mdisc_by_msgtype(msg_type); |
| 84 | dh->c.msg_type = msg_type; |
| 85 | dh->ie_chan = RSL_IE_CHAN_NR; |
| 86 | } |
| 87 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 88 | /* determine logical channel based on TRX and channel number IE */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 89 | 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] | 90 | { |
| 91 | struct gsm_lchan *lchan; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 92 | uint8_t ts_nr = chan_nr & 0x07; |
| 93 | uint8_t cbits = chan_nr >> 3; |
| 94 | uint8_t lch_idx; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 95 | struct gsm_bts_trx_ts *ts = &trx->ts[ts_nr]; |
| 96 | |
| 97 | if (cbits == 0x01) { |
| 98 | lch_idx = 0; /* TCH/F */ |
Harald Welte | a1499d0 | 2009-10-24 10:25:50 +0200 | [diff] [blame] | 99 | if (ts->pchan != GSM_PCHAN_TCH_F && |
| 100 | ts->pchan != GSM_PCHAN_PDCH && |
| 101 | ts->pchan != GSM_PCHAN_TCH_F_PDCH) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 102 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 103 | chan_nr, ts->pchan); |
| 104 | } else if ((cbits & 0x1e) == 0x02) { |
| 105 | lch_idx = cbits & 0x1; /* TCH/H */ |
| 106 | if (ts->pchan != GSM_PCHAN_TCH_H) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 107 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 108 | chan_nr, ts->pchan); |
| 109 | } else if ((cbits & 0x1c) == 0x04) { |
| 110 | lch_idx = cbits & 0x3; /* SDCCH/4 */ |
| 111 | if (ts->pchan != GSM_PCHAN_CCCH_SDCCH4) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 112 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 113 | chan_nr, ts->pchan); |
| 114 | } else if ((cbits & 0x18) == 0x08) { |
| 115 | lch_idx = cbits & 0x7; /* SDCCH/8 */ |
| 116 | if (ts->pchan != GSM_PCHAN_SDCCH8_SACCH8C) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 117 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 118 | chan_nr, ts->pchan); |
| 119 | } else if (cbits == 0x10 || cbits == 0x11 || cbits == 0x12) { |
| 120 | lch_idx = 0; |
| 121 | if (ts->pchan != GSM_PCHAN_CCCH && |
| 122 | ts->pchan != GSM_PCHAN_CCCH_SDCCH4) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 123 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 124 | chan_nr, ts->pchan); |
| 125 | /* FIXME: we should not return first sdcch4 !!! */ |
| 126 | } else { |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 127 | LOGP(DRSL, LOGL_ERROR, "unknown chan_nr=0x%02x\n", chan_nr); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 128 | return NULL; |
| 129 | } |
| 130 | |
| 131 | lchan = &ts->lchan[lch_idx]; |
Harald Welte | dc5062b | 2010-03-26 21:28:59 +0800 | [diff] [blame] | 132 | log_set_context(BSC_CTX_LCHAN, lchan); |
Holger Hans Peter Freyther | 2412a07 | 2010-06-28 15:47:12 +0800 | [diff] [blame] | 133 | if (lchan->conn) |
| 134 | log_set_context(BSC_CTX_SUBSCR, lchan->conn->subscr); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 135 | |
| 136 | return lchan; |
| 137 | } |
| 138 | |
Holger Hans Peter Freyther | e81a610 | 2009-10-22 11:47:45 +0200 | [diff] [blame] | 139 | /* See Table 10.5.25 of GSM04.08 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 140 | static uint8_t ts2chan_nr(const struct gsm_bts_trx_ts *ts, uint8_t lchan_nr) |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 141 | { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 142 | uint8_t cbits, chan_nr; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 143 | |
| 144 | switch (ts->pchan) { |
| 145 | case GSM_PCHAN_TCH_F: |
Harald Welte | a1499d0 | 2009-10-24 10:25:50 +0200 | [diff] [blame] | 146 | case GSM_PCHAN_PDCH: |
| 147 | case GSM_PCHAN_TCH_F_PDCH: |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 148 | cbits = 0x01; |
| 149 | break; |
| 150 | case GSM_PCHAN_TCH_H: |
| 151 | cbits = 0x02; |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 152 | cbits += lchan_nr; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 153 | break; |
| 154 | case GSM_PCHAN_CCCH_SDCCH4: |
| 155 | cbits = 0x04; |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 156 | cbits += lchan_nr; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 157 | break; |
| 158 | case GSM_PCHAN_SDCCH8_SACCH8C: |
| 159 | cbits = 0x08; |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 160 | cbits += lchan_nr; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 161 | break; |
| 162 | default: |
| 163 | case GSM_PCHAN_CCCH: |
| 164 | cbits = 0x10; |
| 165 | break; |
| 166 | } |
| 167 | |
| 168 | chan_nr = (cbits << 3) | (ts->nr & 0x7); |
| 169 | |
| 170 | return chan_nr; |
| 171 | } |
| 172 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 173 | uint8_t lchan2chan_nr(const struct gsm_lchan *lchan) |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 174 | { |
| 175 | return ts2chan_nr(lchan->ts, lchan->nr); |
| 176 | } |
| 177 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 178 | /* 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] | 179 | uint64_t str_to_imsi(const char *imsi_str) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 180 | { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 181 | uint64_t ret; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 182 | |
| 183 | ret = strtoull(imsi_str, NULL, 10); |
| 184 | |
| 185 | return ret; |
| 186 | } |
| 187 | |
| 188 | /* Table 5 Clause 7 TS 05.02 */ |
| 189 | unsigned int n_pag_blocks(int bs_ccch_sdcch_comb, unsigned int bs_ag_blks_res) |
| 190 | { |
| 191 | if (!bs_ccch_sdcch_comb) |
| 192 | return 9 - bs_ag_blks_res; |
| 193 | else |
| 194 | return 3 - bs_ag_blks_res; |
| 195 | } |
| 196 | |
| 197 | /* Chapter 6.5.2 of TS 05.02 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 198 | unsigned int get_ccch_group(uint64_t imsi, unsigned int bs_cc_chans, |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 199 | unsigned int n_pag_blocks) |
| 200 | { |
| 201 | return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) / n_pag_blocks; |
| 202 | } |
| 203 | |
| 204 | /* Chapter 6.5.2 of TS 05.02 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 205 | unsigned int get_paging_group(uint64_t imsi, unsigned int bs_cc_chans, |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 206 | int n_pag_blocks) |
| 207 | { |
| 208 | return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) % n_pag_blocks; |
| 209 | } |
| 210 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 211 | static struct msgb *rsl_msgb_alloc(void) |
| 212 | { |
Harald Welte | 966636f | 2009-06-26 19:39:35 +0200 | [diff] [blame] | 213 | return msgb_alloc_headroom(RSL_ALLOC_SIZE, RSL_ALLOC_HEADROOM, |
| 214 | "RSL"); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 215 | } |
| 216 | |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 217 | #define MACBLOCK_SIZE 23 |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 218 | 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] | 219 | { |
| 220 | memcpy(out, in, len); |
| 221 | |
| 222 | if (len < MACBLOCK_SIZE) |
| 223 | memset(out+len, 0x2b, MACBLOCK_SIZE-len); |
| 224 | } |
| 225 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 226 | /* Chapter 9.3.7: Encryption Information */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 227 | static int build_encr_info(uint8_t *out, struct gsm_lchan *lchan) |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 228 | { |
| 229 | *out++ = lchan->encr.alg_id & 0xff; |
| 230 | if (lchan->encr.key_len) |
| 231 | memcpy(out, lchan->encr.key, lchan->encr.key_len); |
| 232 | return lchan->encr.key_len + 1; |
| 233 | } |
| 234 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 235 | 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] | 236 | { |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 237 | int i; |
| 238 | |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 239 | LOGPC(DRSL, lvl, "CAUSE=0x%02x(%s) ", |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 240 | cause_v[0], rsl_err_name(cause_v[0])); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 241 | for (i = 1; i < cause_len-1; i++) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 242 | LOGPC(DRSL, lvl, "%02x ", cause_v[i]); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 243 | } |
| 244 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 245 | /* 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] | 246 | int rsl_bcch_info(struct gsm_bts_trx *trx, uint8_t type, |
| 247 | const uint8_t *data, int len) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 248 | { |
| 249 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 250 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 251 | |
| 252 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof*dh); |
| 253 | init_dchan_hdr(dh, RSL_MT_BCCH_INFO); |
| 254 | dh->chan_nr = RSL_CHAN_BCCH; |
| 255 | |
| 256 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 257 | msgb_tlv_put(msg, RSL_IE_FULL_BCCH_INFO, len, data); |
| 258 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 259 | msg->trx = trx; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 260 | |
| 261 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 262 | } |
| 263 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 264 | int rsl_sacch_filling(struct gsm_bts_trx *trx, uint8_t type, |
| 265 | const uint8_t *data, int len) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 266 | { |
| 267 | struct abis_rsl_common_hdr *ch; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 268 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 269 | |
| 270 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 271 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 272 | ch->msg_type = RSL_MT_SACCH_FILL; |
| 273 | |
| 274 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 275 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 276 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 277 | msg->trx = trx; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 278 | |
| 279 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 280 | } |
| 281 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 282 | int rsl_sacch_info_modify(struct gsm_lchan *lchan, uint8_t type, |
| 283 | const uint8_t *data, int len) |
Harald Welte | 7a69cf0 | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 284 | { |
| 285 | struct abis_rsl_dchan_hdr *dh; |
| 286 | struct msgb *msg = rsl_msgb_alloc(); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 287 | uint8_t chan_nr = lchan2chan_nr(lchan); |
Harald Welte | 7a69cf0 | 2011-01-13 23:16:03 +0100 | [diff] [blame] | 288 | |
| 289 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 290 | init_dchan_hdr(dh, RSL_MT_SACCH_INFO_MODIFY); |
| 291 | dh->chan_nr = chan_nr; |
| 292 | |
| 293 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 294 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
| 295 | |
| 296 | msg->trx = lchan->ts->trx; |
| 297 | |
| 298 | return abis_rsl_sendmsg(msg); |
| 299 | } |
| 300 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 301 | int rsl_chan_bs_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int db) |
| 302 | { |
| 303 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 304 | struct msgb *msg; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 305 | uint8_t chan_nr = lchan2chan_nr(lchan); |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 306 | |
| 307 | db = abs(db); |
| 308 | if (db > 30) |
| 309 | return -EINVAL; |
| 310 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 311 | msg = rsl_msgb_alloc(); |
| 312 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 313 | lchan->bs_power = db/2; |
| 314 | if (fpc) |
| 315 | lchan->bs_power |= 0x10; |
| 316 | |
| 317 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 318 | init_dchan_hdr(dh, RSL_MT_BS_POWER_CONTROL); |
| 319 | dh->chan_nr = chan_nr; |
| 320 | |
| 321 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 322 | |
| 323 | msg->trx = lchan->ts->trx; |
| 324 | |
| 325 | return abis_rsl_sendmsg(msg); |
| 326 | } |
| 327 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 328 | int rsl_chan_ms_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int dbm) |
| 329 | { |
| 330 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 331 | struct msgb *msg; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 332 | uint8_t chan_nr = lchan2chan_nr(lchan); |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 333 | int ctl_lvl; |
| 334 | |
Harald Welte | 66b6a8d | 2009-08-09 14:45:18 +0200 | [diff] [blame] | 335 | ctl_lvl = ms_pwr_ctl_lvl(lchan->ts->trx->bts->band, dbm); |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 336 | if (ctl_lvl < 0) |
| 337 | return ctl_lvl; |
| 338 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 339 | msg = rsl_msgb_alloc(); |
| 340 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 341 | lchan->ms_power = ctl_lvl; |
| 342 | |
| 343 | if (fpc) |
| 344 | lchan->ms_power |= 0x20; |
| 345 | |
| 346 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 347 | init_dchan_hdr(dh, RSL_MT_MS_POWER_CONTROL); |
| 348 | dh->chan_nr = chan_nr; |
| 349 | |
| 350 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 351 | |
| 352 | msg->trx = lchan->ts->trx; |
| 353 | |
| 354 | return abis_rsl_sendmsg(msg); |
| 355 | } |
| 356 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 357 | static int channel_mode_from_lchan(struct rsl_ie_chan_mode *cm, |
| 358 | struct gsm_lchan *lchan) |
| 359 | { |
| 360 | memset(cm, 0, sizeof(cm)); |
| 361 | |
| 362 | /* FIXME: what to do with data calls ? */ |
Holger Hans Peter Freyther | 5a3a61d | 2010-09-06 09:25:48 +0800 | [diff] [blame] | 363 | if (lchan->ts->trx->bts->network->dtx_enabled) |
| 364 | cm->dtx_dtu = 0x03; |
| 365 | else |
| 366 | cm->dtx_dtu = 0x00; |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 367 | |
| 368 | /* set TCH Speech/Data */ |
| 369 | cm->spd_ind = lchan->rsl_cmode; |
| 370 | |
Harald Welte | 1a79d36 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 371 | if (lchan->rsl_cmode == RSL_CMOD_SPD_SIGN && |
| 372 | lchan->tch_mode != GSM48_CMODE_SIGN) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 373 | LOGP(DRSL, LOGL_ERROR, "unsupported: rsl_mode == signalling, " |
Harald Welte | 1a79d36 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 374 | "but tch_mode != signalling\n"); |
| 375 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 376 | switch (lchan->type) { |
| 377 | case GSM_LCHAN_SDCCH: |
| 378 | cm->chan_rt = RSL_CMOD_CRT_SDCCH; |
| 379 | break; |
| 380 | case GSM_LCHAN_TCH_F: |
| 381 | cm->chan_rt = RSL_CMOD_CRT_TCH_Bm; |
| 382 | break; |
| 383 | case GSM_LCHAN_TCH_H: |
| 384 | cm->chan_rt = RSL_CMOD_CRT_TCH_Lm; |
| 385 | break; |
| 386 | case GSM_LCHAN_NONE: |
| 387 | case GSM_LCHAN_UNKNOWN: |
| 388 | default: |
| 389 | return -EINVAL; |
| 390 | } |
| 391 | |
| 392 | switch (lchan->tch_mode) { |
| 393 | case GSM48_CMODE_SIGN: |
| 394 | cm->chan_rate = 0; |
| 395 | break; |
| 396 | case GSM48_CMODE_SPEECH_V1: |
| 397 | cm->chan_rate = RSL_CMOD_SP_GSM1; |
| 398 | break; |
| 399 | case GSM48_CMODE_SPEECH_EFR: |
| 400 | cm->chan_rate = RSL_CMOD_SP_GSM2; |
| 401 | break; |
| 402 | case GSM48_CMODE_SPEECH_AMR: |
| 403 | cm->chan_rate = RSL_CMOD_SP_GSM3; |
| 404 | break; |
| 405 | case GSM48_CMODE_DATA_14k5: |
| 406 | cm->chan_rate = RSL_CMOD_SP_NT_14k5; |
| 407 | break; |
| 408 | case GSM48_CMODE_DATA_12k0: |
| 409 | cm->chan_rate = RSL_CMOD_SP_NT_12k0; |
| 410 | break; |
| 411 | case GSM48_CMODE_DATA_6k0: |
| 412 | cm->chan_rate = RSL_CMOD_SP_NT_6k0; |
| 413 | break; |
| 414 | default: |
| 415 | return -EINVAL; |
| 416 | } |
| 417 | |
| 418 | return 0; |
| 419 | } |
| 420 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 421 | /* Chapter 8.4.1 */ |
Harald Welte | ddab3c7 | 2009-02-28 13:19:15 +0000 | [diff] [blame] | 422 | #if 0 |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 423 | int rsl_chan_activate(struct gsm_bts_trx *trx, uint8_t chan_nr, |
| 424 | uint8_t act_type, |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 425 | struct rsl_ie_chan_mode *chan_mode, |
| 426 | struct rsl_ie_chan_ident *chan_ident, |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 427 | uint8_t bs_power, uint8_t ms_power, |
| 428 | uint8_t ta) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 429 | { |
| 430 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 431 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 432 | |
| 433 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 434 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 435 | dh->chan_nr = chan_nr; |
| 436 | |
| 437 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
| 438 | /* For compatibility with Phase 1 */ |
| 439 | 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] | 440 | (uint8_t *) chan_mode); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 441 | msgb_tlv_put(msg, RSL_IE_CHAN_IDENT, 4, |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 442 | (uint8_t *) chan_ident); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 443 | #if 0 |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 444 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, 1, |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 445 | (uint8_t *) &encr_info); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 446 | #endif |
Harald Welte | d4c9bf3 | 2009-02-15 16:56:18 +0000 | [diff] [blame] | 447 | msgb_tv_put(msg, RSL_IE_BS_POWER, bs_power); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 448 | msgb_tv_put(msg, RSL_IE_MS_POWER, ms_power); |
| 449 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
| 450 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 451 | msg->trx = trx; |
| 452 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 453 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 454 | } |
Harald Welte | ddab3c7 | 2009-02-28 13:19:15 +0000 | [diff] [blame] | 455 | #endif |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 456 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 457 | int rsl_chan_activate_lchan(struct gsm_lchan *lchan, uint8_t act_type, |
| 458 | uint8_t ta, uint8_t ho_ref) |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 459 | { |
| 460 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 461 | struct msgb *msg; |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 462 | int rc; |
Harald Welte | 93d50e6 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 463 | uint8_t *len; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 464 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 465 | uint8_t chan_nr = lchan2chan_nr(lchan); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 466 | struct rsl_ie_chan_mode cm; |
laforge | 694a5cf | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 467 | struct gsm48_chan_desc cd; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 468 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 469 | rc = channel_mode_from_lchan(&cm, lchan); |
| 470 | if (rc < 0) |
| 471 | return rc; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 472 | |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 473 | memset(&cd, 0, sizeof(cd)); |
laforge | 694a5cf | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 474 | gsm48_lchan2chan_desc(&cd, lchan); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 475 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 476 | msg = rsl_msgb_alloc(); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 477 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 478 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 479 | dh->chan_nr = chan_nr; |
| 480 | |
| 481 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 482 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 483 | (uint8_t *) &cm); |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 484 | |
| 485 | /* |
| 486 | * The Channel Identification is needed for Phase1 phones |
| 487 | * and it contains the GSM48 Channel Description and the |
| 488 | * Mobile Allocation. The GSM 08.58 asks for the Mobile |
| 489 | * Allocation to have a length of zero. We are using the |
| 490 | * msgb_l3len to calculate the length of both messages. |
| 491 | */ |
laforge | 694a5cf | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 492 | msgb_v_put(msg, RSL_IE_CHAN_IDENT); |
Harald Welte | 93d50e6 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 493 | len = msgb_put(msg, 1); |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 494 | msgb_tlv_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] | 495 | |
| 496 | if (lchan->ts->hopping.enabled) |
| 497 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, lchan->ts->hopping.ma_len, |
| 498 | lchan->ts->hopping.ma_data); |
| 499 | else |
| 500 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, 0, NULL); |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 501 | |
| 502 | /* update the calculated size */ |
| 503 | msg->l3h = len + 1; |
| 504 | *len = msgb_l3len(msg); |
| 505 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 506 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 507 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 508 | rc = build_encr_info(encr_info, lchan); |
| 509 | if (rc > 0) |
| 510 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 511 | } |
| 512 | |
Harald Welte | 8d77b95 | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 513 | switch (act_type) { |
| 514 | case RSL_ACT_INTER_ASYNC: |
| 515 | case RSL_ACT_INTER_SYNC: |
| 516 | msgb_tv_put(msg, RSL_IE_HANDO_REF, ho_ref); |
| 517 | break; |
| 518 | default: |
| 519 | break; |
| 520 | } |
| 521 | |
Harald Welte | d4c9bf3 | 2009-02-15 16:56:18 +0000 | [diff] [blame] | 522 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 523 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 524 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
| 525 | |
Holger Hans Peter Freyther | 93b6c65 | 2010-01-28 04:45:05 +0100 | [diff] [blame] | 526 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) |
| 527 | 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] | 528 | (uint8_t *) &lchan->mr_conf); |
Holger Hans Peter Freyther | 93b6c65 | 2010-01-28 04:45:05 +0100 | [diff] [blame] | 529 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 530 | msg->trx = lchan->ts->trx; |
| 531 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 532 | return abis_rsl_sendmsg(msg); |
| 533 | } |
| 534 | |
Harald Welte | 470abb7 | 2009-07-29 11:38:15 +0200 | [diff] [blame] | 535 | /* Chapter 8.4.9: Modify channel mode on BTS side */ |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 536 | int rsl_chan_mode_modify_req(struct gsm_lchan *lchan) |
| 537 | { |
| 538 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 539 | struct msgb *msg; |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 540 | int rc; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 541 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 542 | uint8_t chan_nr = lchan2chan_nr(lchan); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 543 | struct rsl_ie_chan_mode cm; |
| 544 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 545 | rc = channel_mode_from_lchan(&cm, lchan); |
| 546 | if (rc < 0) |
| 547 | return rc; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 548 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 549 | msg = rsl_msgb_alloc(); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 550 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 551 | init_dchan_hdr(dh, RSL_MT_MODE_MODIFY_REQ); |
| 552 | dh->chan_nr = chan_nr; |
| 553 | |
| 554 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 555 | (uint8_t *) &cm); |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 556 | |
| 557 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 558 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 559 | rc = build_encr_info(encr_info, lchan); |
| 560 | if (rc > 0) |
| 561 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 562 | } |
| 563 | |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 564 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) { |
| 565 | 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] | 566 | (uint8_t *) &lchan->mr_conf); |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 567 | } |
| 568 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 569 | msg->trx = lchan->ts->trx; |
| 570 | |
| 571 | return abis_rsl_sendmsg(msg); |
| 572 | } |
| 573 | |
| 574 | /* Chapter 8.4.6: Send the encryption command with given L3 info */ |
| 575 | int rsl_encryption_cmd(struct msgb *msg) |
| 576 | { |
| 577 | struct abis_rsl_dchan_hdr *dh; |
| 578 | struct gsm_lchan *lchan = msg->lchan; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 579 | uint8_t chan_nr = lchan2chan_nr(lchan); |
| 580 | uint8_t encr_info[MAX_A5_KEY_LEN+2]; |
| 581 | uint8_t l3_len = msg->len; |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 582 | int rc; |
| 583 | |
| 584 | /* First push the L3 IE tag and length */ |
| 585 | msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len); |
| 586 | |
| 587 | /* then the link identifier (SAPI0, main sign link) */ |
| 588 | msgb_tv_push(msg, RSL_IE_LINK_IDENT, 0); |
| 589 | |
| 590 | /* then encryption information */ |
| 591 | rc = build_encr_info(encr_info, lchan); |
| 592 | if (rc <= 0) |
| 593 | return rc; |
| 594 | msgb_tlv_push(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 595 | |
| 596 | /* and finally the DCHAN header */ |
| 597 | dh = (struct abis_rsl_dchan_hdr *) msgb_push(msg, sizeof(*dh)); |
| 598 | init_dchan_hdr(dh, RSL_MT_ENCR_CMD); |
| 599 | dh->chan_nr = chan_nr; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 600 | |
| 601 | msg->trx = lchan->ts->trx; |
| 602 | |
| 603 | return abis_rsl_sendmsg(msg); |
| 604 | } |
| 605 | |
Harald Welte | 115d103 | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 606 | /* 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] | 607 | int rsl_deact_sacch(struct gsm_lchan *lchan) |
| 608 | { |
| 609 | struct abis_rsl_dchan_hdr *dh; |
| 610 | struct msgb *msg = rsl_msgb_alloc(); |
| 611 | |
| 612 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 613 | init_dchan_hdr(dh, RSL_MT_DEACTIVATE_SACCH); |
| 614 | dh->chan_nr = lchan2chan_nr(lchan); |
| 615 | |
| 616 | msg->lchan = lchan; |
| 617 | msg->trx = lchan->ts->trx; |
| 618 | |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 619 | DEBUGP(DRSL, "%s DEACTivate SACCH CMD\n", gsm_lchan_name(lchan)); |
Harald Welte | ae0f236 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 620 | |
| 621 | return abis_rsl_sendmsg(msg); |
| 622 | } |
| 623 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 624 | static void error_timeout_cb(void *data) |
| 625 | { |
| 626 | struct gsm_lchan *lchan = data; |
| 627 | if (lchan->state != LCHAN_S_REL_ERR) { |
| 628 | LOGP(DRSL, LOGL_ERROR, "%s error timeout but not in error state: %d\n", |
| 629 | gsm_lchan_name(lchan), lchan->state); |
| 630 | return; |
| 631 | } |
| 632 | |
| 633 | /* go back to the none state */ |
| 634 | 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] | 635 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 636 | } |
| 637 | |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 638 | static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan); |
| 639 | |
Harald Welte | 115d103 | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 640 | /* Chapter 8.4.14 / 4.7: Tell BTS to release the radio channel */ |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 641 | static int rsl_rf_chan_release(struct gsm_lchan *lchan, int error) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 642 | { |
| 643 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 644 | struct msgb *msg; |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 645 | int rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 646 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 647 | if (lchan->state == LCHAN_S_REL_ERR) { |
| 648 | LOGP(DRSL, LOGL_NOTICE, "%s is in error state not sending release.\n", |
| 649 | gsm_lchan_name(lchan)); |
| 650 | return -1; |
| 651 | } |
| 652 | |
| 653 | msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 654 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 655 | init_dchan_hdr(dh, RSL_MT_RF_CHAN_REL); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 656 | dh->chan_nr = lchan2chan_nr(lchan); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 657 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 658 | msg->lchan = lchan; |
| 659 | msg->trx = lchan->ts->trx; |
| 660 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 661 | DEBUGP(DRSL, "%s RF Channel Release CMD due error %d\n", gsm_lchan_name(lchan), error); |
| 662 | |
| 663 | if (error) { |
| 664 | /* |
| 665 | * the nanoBTS sends RLL release indications after the channel release. This can |
| 666 | * be a problem when we have reassigned the channel to someone else and then can |
| 667 | * not figure out who used this channel. |
| 668 | */ |
Holger Hans Peter Freyther | 44752d9 | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 669 | rsl_lchan_set_state(lchan, LCHAN_S_REL_ERR); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 670 | lchan->error_timer.data = lchan; |
| 671 | lchan->error_timer.cb = error_timeout_cb; |
| 672 | bsc_schedule_timer(&lchan->error_timer, |
| 673 | msg->trx->bts->network->T3111 + 2, 0); |
| 674 | } |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 675 | |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 676 | rc = abis_rsl_sendmsg(msg); |
| 677 | |
Harald Welte | 115d103 | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 678 | /* BTS will respond by RF CHAN REL ACK */ |
Harald Welte | 26d7907 | 2011-01-14 23:18:59 +0100 | [diff] [blame] | 679 | #ifdef HSL_SR_1_0 |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 680 | /* The HSL Femto seems to 'forget' sending a REL ACK for TS1...TS7 */ |
| 681 | if (lchan->ts->trx->bts->type == GSM_BTS_TYPE_HSL_FEMTO && lchan->ts->nr != 0) |
| 682 | rc = rsl_rx_rf_chan_rel_ack(lchan); |
Harald Welte | 26d7907 | 2011-01-14 23:18:59 +0100 | [diff] [blame] | 683 | #endif |
Harald Welte | fd355a3 | 2011-03-04 13:41:31 +0100 | [diff] [blame] | 684 | |
| 685 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 686 | } |
| 687 | |
Harald Welte | 64bb754 | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 688 | static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan) |
| 689 | { |
| 690 | |
| 691 | DEBUGP(DRSL, "%s RF CHANNEL RELEASE ACK\n", gsm_lchan_name(lchan)); |
| 692 | |
| 693 | if (lchan->state != LCHAN_S_REL_REQ && lchan->state != LCHAN_S_REL_ERR) |
| 694 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN REL ACK but state %s\n", |
| 695 | gsm_lchan_name(lchan), |
| 696 | gsm_lchans_name(lchan->state)); |
| 697 | bsc_del_timer(&lchan->T3111); |
| 698 | /* we have an error timer pending to release that */ |
| 699 | if (lchan->state != LCHAN_S_REL_ERR) |
| 700 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
| 701 | lchan_free(lchan); |
| 702 | |
| 703 | return 0; |
| 704 | } |
| 705 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 706 | int rsl_paging_cmd(struct gsm_bts *bts, uint8_t paging_group, uint8_t len, |
| 707 | uint8_t *ms_ident, uint8_t chan_needed) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 708 | { |
| 709 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 710 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 711 | |
| 712 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 713 | init_dchan_hdr(dh, RSL_MT_PAGING_CMD); |
| 714 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 715 | |
| 716 | msgb_tv_put(msg, RSL_IE_PAGING_GROUP, paging_group); |
Harald Welte | 255539c | 2008-12-28 02:26:27 +0000 | [diff] [blame] | 717 | 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] | 718 | msgb_tv_put(msg, RSL_IE_CHAN_NEEDED, chan_needed); |
| 719 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 720 | msg->trx = bts->c0; |
| 721 | |
| 722 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 723 | } |
| 724 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 725 | int imsi_str2bcd(uint8_t *bcd_out, const char *str_in) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 726 | { |
| 727 | int i, len = strlen(str_in); |
| 728 | |
| 729 | for (i = 0; i < len; i++) { |
| 730 | int num = str_in[i] - 0x30; |
| 731 | if (num < 0 || num > 9) |
| 732 | return -1; |
| 733 | if (i % 2 == 0) |
| 734 | bcd_out[i/2] = num; |
| 735 | else |
| 736 | bcd_out[i/2] |= (num << 4); |
| 737 | } |
| 738 | |
| 739 | return 0; |
| 740 | } |
| 741 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 742 | /* Chapter 8.5.6 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 743 | 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] | 744 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 745 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 746 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 747 | uint8_t buf[MACBLOCK_SIZE]; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 748 | |
| 749 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 750 | init_dchan_hdr(dh, RSL_MT_IMMEDIATE_ASSIGN_CMD); |
| 751 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 752 | |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 753 | switch (bts->type) { |
| 754 | case GSM_BTS_TYPE_BS11: |
| 755 | msgb_tlv_put(msg, RSL_IE_IMM_ASS_INFO, len, val); |
| 756 | break; |
| 757 | default: |
| 758 | /* If phase 2, construct a FULL_IMM_ASS_INFO */ |
| 759 | pad_macblock(buf, val, len); |
| 760 | msgb_tlv_put(msg, RSL_IE_FULL_IMM_ASS_INFO, MACBLOCK_SIZE, buf); |
| 761 | break; |
| 762 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 763 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 764 | msg->trx = bts->c0; |
| 765 | |
| 766 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 767 | } |
| 768 | |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 769 | /* Send Siemens specific MS RF Power Capability Indication */ |
Harald Welte | 31c4893 | 2009-08-10 10:07:33 +0200 | [diff] [blame] | 770 | int rsl_siemens_mrpci(struct gsm_lchan *lchan, struct rsl_mrpci *mrpci) |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 771 | { |
| 772 | struct msgb *msg = rsl_msgb_alloc(); |
| 773 | struct abis_rsl_dchan_hdr *dh; |
| 774 | |
| 775 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 776 | init_dchan_hdr(dh, RSL_MT_SIEMENS_MRPCI); |
Harald Welte | 3c456d0 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 777 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 778 | dh->chan_nr = lchan2chan_nr(lchan); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 779 | msgb_tv_put(msg, RSL_IE_SIEMENS_MRPCI, *(uint8_t *)mrpci); |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 780 | |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 781 | DEBUGP(DRSL, "%s TX Siemens MRPCI 0x%02x\n", |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 782 | gsm_lchan_name(lchan), *(uint8_t *)mrpci); |
Harald Welte | 3c456d0 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 783 | |
| 784 | msg->trx = lchan->ts->trx; |
| 785 | |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 786 | return abis_rsl_sendmsg(msg); |
| 787 | } |
| 788 | |
| 789 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 790 | /* Send "DATA REQUEST" message with given L3 Info payload */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 791 | /* Chapter 8.3.1 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 792 | int rsl_data_request(struct msgb *msg, uint8_t link_id) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 793 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 794 | if (msg->lchan == NULL) { |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 795 | LOGP(DRSL, LOGL_ERROR, "cannot send DATA REQUEST to unknown lchan\n"); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 796 | return -EINVAL; |
| 797 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 798 | |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 799 | rsl_rll_push_l3(msg, RSL_MT_DATA_REQ, lchan2chan_nr(msg->lchan), |
| 800 | link_id, 1); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 801 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 802 | msg->trx = msg->lchan->ts->trx; |
| 803 | |
| 804 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 805 | } |
| 806 | |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 807 | /* Send "ESTABLISH REQUEST" message with given L3 Info payload */ |
| 808 | /* Chapter 8.3.1 */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 809 | int rsl_establish_request(struct gsm_lchan *lchan, uint8_t link_id) |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 810 | { |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 811 | struct msgb *msg; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 812 | |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 813 | msg = rsl_rll_simple(RSL_MT_EST_REQ, lchan2chan_nr(lchan), |
| 814 | link_id, 0); |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 815 | msg->trx = lchan->ts->trx; |
| 816 | |
| 817 | return abis_rsl_sendmsg(msg); |
| 818 | } |
| 819 | |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 820 | /* Chapter 8.3.7 Request the release of multiframe mode of RLL connection. |
| 821 | This is what higher layers should call. The BTS then responds with |
| 822 | RELEASE CONFIRM, which we in turn use to trigger RSL CHANNEL RELEASE, |
| 823 | which in turn is acknowledged by RSL CHANNEL RELEASE ACK, which calls |
| 824 | lchan_free() */ |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 825 | int rsl_release_request(struct gsm_lchan *lchan, uint8_t link_id, uint8_t reason) |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 826 | { |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 827 | |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 828 | struct msgb *msg; |
| 829 | |
| 830 | msg = rsl_rll_simple(RSL_MT_REL_REQ, lchan2chan_nr(lchan), |
| 831 | link_id, 0); |
Holger Hans Peter Freyther | 4f5848d | 2010-06-08 11:57:45 +0800 | [diff] [blame] | 832 | /* 0 is normal release, 1 is local end */ |
| 833 | msgb_tv_put(msg, RSL_IE_RELEASE_MODE, reason); |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 834 | |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 835 | /* FIXME: start some timer in case we don't receive a REL ACK ? */ |
| 836 | |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 837 | msg->trx = lchan->ts->trx; |
| 838 | |
| 839 | return abis_rsl_sendmsg(msg); |
| 840 | } |
| 841 | |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 842 | int rsl_lchan_set_state(struct gsm_lchan *lchan, int state) |
| 843 | { |
| 844 | lchan->state = state; |
| 845 | return 0; |
| 846 | } |
| 847 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 848 | /* Chapter 8.4.2: Channel Activate Acknowledge */ |
| 849 | static int rsl_rx_chan_act_ack(struct msgb *msg) |
| 850 | { |
| 851 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 852 | |
| 853 | /* BTS has confirmed channel activation, we now need |
| 854 | * to assign the activated channel to the MS */ |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 855 | if (rslh->ie_chan != RSL_IE_CHAN_NR) |
| 856 | return -EINVAL; |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 857 | |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 858 | if (msg->lchan->state != LCHAN_S_ACT_REQ) |
Harald Welte | 1887f9d | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 859 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK, but state %s\n", |
| 860 | gsm_lchan_name(msg->lchan), |
| 861 | gsm_lchans_name(msg->lchan->state)); |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 862 | rsl_lchan_set_state(msg->lchan, LCHAN_S_ACTIVE); |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 863 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 864 | if (msg->lchan->rqd_ref) { |
| 865 | rsl_send_imm_assignment(msg->lchan); |
| 866 | talloc_free(msg->lchan->rqd_ref); |
| 867 | msg->lchan->rqd_ref = NULL; |
| 868 | msg->lchan->rqd_ta = 0; |
| 869 | } |
| 870 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 871 | send_lchan_signal(S_LCHAN_ACTIVATE_ACK, msg->lchan, NULL); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 872 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 873 | return 0; |
| 874 | } |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 875 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 876 | /* Chapter 8.4.3: Channel Activate NACK */ |
| 877 | static int rsl_rx_chan_act_nack(struct msgb *msg) |
| 878 | { |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 879 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 880 | struct tlv_parsed tp; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 881 | |
Harald Welte (local) | 91b603d | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 882 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL ACTIVATE NACK", |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 883 | gsm_lchan_name(msg->lchan)); |
Harald Welte (local) | 91b603d | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 884 | |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 885 | /* BTS has rejected channel activation ?!? */ |
| 886 | if (dh->ie_chan != RSL_IE_CHAN_NR) |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 887 | return -EINVAL; |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 888 | |
| 889 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 890 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 891 | const uint8_t *cause = TLVP_VAL(&tp, RSL_IE_CAUSE); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 892 | print_rsl_cause(LOGL_ERROR, cause, |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 893 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 894 | if (*cause != RSL_ERR_RCH_ALR_ACTV_ALLOC) |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 895 | rsl_lchan_set_state(msg->lchan, LCHAN_S_NONE); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 896 | } else |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 897 | rsl_lchan_set_state(msg->lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 898 | |
Harald Welte (local) | 91b603d | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 899 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
| 900 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 901 | send_lchan_signal(S_LCHAN_ACTIVATE_NACK, msg->lchan, NULL); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 902 | |
Harald Welte | 3073a9f | 2009-08-09 19:50:08 +0200 | [diff] [blame] | 903 | lchan_free(msg->lchan); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 904 | return 0; |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 905 | } |
| 906 | |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 907 | /* Chapter 8.4.4: Connection Failure Indication */ |
| 908 | static int rsl_rx_conn_fail(struct msgb *msg) |
| 909 | { |
| 910 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 911 | struct tlv_parsed tp; |
| 912 | |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 913 | /* FIXME: print which channel */ |
Harald Welte (local) | fc05750 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 914 | LOGP(DRSL, LOGL_NOTICE, "%s CONNECTION FAIL: RELEASING ", |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 915 | gsm_lchan_name(msg->lchan)); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 916 | |
| 917 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 918 | |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 919 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 920 | print_rsl_cause(LOGL_NOTICE, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 921 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 922 | |
Harald Welte (local) | fc05750 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 923 | LOGPC(DRSL, LOGL_NOTICE, "\n"); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 924 | /* FIXME: only free it after channel release ACK */ |
Holger Hans Peter Freyther | 3ba36d5 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 925 | counter_inc(msg->lchan->ts->trx->bts->network->stats.chan.rf_fail); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 926 | return rsl_rf_chan_release(msg->lchan, 1); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 927 | } |
| 928 | |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 929 | static void print_meas_rep_uni(struct gsm_meas_rep_unidir *mru, |
| 930 | const char *prefix) |
| 931 | { |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 932 | DEBUGPC(DMEAS, "RXL-FULL-%s=%3ddBm RXL-SUB-%s=%3ddBm ", |
| 933 | prefix, rxlev2dbm(mru->full.rx_lev), |
| 934 | prefix, rxlev2dbm(mru->sub.rx_lev)); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 935 | DEBUGPC(DMEAS, "RXQ-FULL-%s=%d RXQ-SUB-%s=%d ", |
| 936 | prefix, mru->full.rx_qual, prefix, mru->sub.rx_qual); |
| 937 | } |
| 938 | |
| 939 | static void print_meas_rep(struct gsm_meas_rep *mr) |
| 940 | { |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 941 | int i; |
| 942 | |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 943 | DEBUGP(DMEAS, "MEASUREMENT RESULT NR=%d ", mr->nr); |
| 944 | |
| 945 | if (mr->flags & MEAS_REP_F_DL_DTX) |
| 946 | DEBUGPC(DMEAS, "DTXd "); |
| 947 | |
| 948 | print_meas_rep_uni(&mr->ul, "ul"); |
| 949 | DEBUGPC(DMEAS, "BS_POWER=%d ", mr->bs_power); |
| 950 | if (mr->flags & MEAS_REP_F_MS_TO) |
| 951 | DEBUGPC(DMEAS, "MS_TO=%d ", mr->ms_timing_offset); |
| 952 | |
| 953 | if (mr->flags & MEAS_REP_F_MS_L1) { |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 954 | DEBUGPC(DMEAS, "L1_MS_PWR=%3ddBm ", mr->ms_l1.pwr); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 955 | DEBUGPC(DMEAS, "L1_FPC=%u ", |
| 956 | mr->flags & MEAS_REP_F_FPC ? 1 : 0); |
| 957 | DEBUGPC(DMEAS, "L1_TA=%u ", mr->ms_l1.ta); |
| 958 | } |
| 959 | |
| 960 | if (mr->flags & MEAS_REP_F_UL_DTX) |
| 961 | DEBUGPC(DMEAS, "DTXu "); |
| 962 | if (mr->flags & MEAS_REP_F_BA1) |
| 963 | DEBUGPC(DMEAS, "BA1 "); |
| 964 | if (!(mr->flags & MEAS_REP_F_DL_VALID)) |
| 965 | DEBUGPC(DMEAS, "NOT VALID "); |
| 966 | else |
| 967 | print_meas_rep_uni(&mr->dl, "dl"); |
| 968 | |
| 969 | DEBUGPC(DMEAS, "NUM_NEIGH=%u\n", mr->num_cell); |
Harald Welte | 479015b | 2009-12-19 18:33:05 +0100 | [diff] [blame] | 970 | if (mr->num_cell == 7) |
| 971 | return; |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 972 | for (i = 0; i < mr->num_cell; i++) { |
| 973 | struct gsm_meas_rep_cell *mrc = &mr->cell[i]; |
Harald Welte | 303e5e0 | 2009-12-25 23:02:22 +0100 | [diff] [blame] | 974 | DEBUGP(DMEAS, "IDX=%u ARFCN=%u BSIC=%u => %d dBm\n", |
| 975 | mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev)); |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 976 | } |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 977 | } |
| 978 | |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 979 | static int rsl_rx_meas_res(struct msgb *msg) |
| 980 | { |
| 981 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 982 | struct tlv_parsed tp; |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 983 | 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] | 984 | uint8_t len; |
| 985 | const uint8_t *val; |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 986 | int rc; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 987 | |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 988 | /* check if this channel is actually active */ |
| 989 | /* FIXME: maybe this check should be way more generic/centralized */ |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 990 | if (msg->lchan->state != LCHAN_S_ACTIVE) { |
Holger Hans Peter Freyther | c44db4a | 2010-07-29 14:50:57 +0800 | [diff] [blame] | 991 | LOGP(DRSL, LOGL_DEBUG, "%s: MEAS RES for inactive channel\n", |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 992 | gsm_lchan_name(msg->lchan)); |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 993 | return 0; |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 994 | } |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 995 | |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 996 | memset(mr, 0, sizeof(*mr)); |
Harald Welte | 33e6597 | 2009-12-16 23:29:34 +0100 | [diff] [blame] | 997 | mr->lchan = msg->lchan; |
Harald Welte | dbb1d88 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 998 | |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 999 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1000 | |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1001 | if (!TLVP_PRESENT(&tp, RSL_IE_MEAS_RES_NR) || |
| 1002 | !TLVP_PRESENT(&tp, RSL_IE_UPLINK_MEAS) || |
| 1003 | !TLVP_PRESENT(&tp, RSL_IE_BS_POWER)) |
| 1004 | return -EIO; |
| 1005 | |
| 1006 | /* Mandatory Parts */ |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1007 | mr->nr = *TLVP_VAL(&tp, RSL_IE_MEAS_RES_NR); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1008 | |
| 1009 | len = TLVP_LEN(&tp, RSL_IE_UPLINK_MEAS); |
| 1010 | val = TLVP_VAL(&tp, RSL_IE_UPLINK_MEAS); |
| 1011 | if (len >= 3) { |
| 1012 | if (val[0] & 0x40) |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1013 | mr->flags |= MEAS_REP_F_DL_DTX; |
| 1014 | mr->ul.full.rx_lev = val[0] & 0x3f; |
| 1015 | mr->ul.sub.rx_lev = val[1] & 0x3f; |
| 1016 | mr->ul.full.rx_qual = val[2]>>3 & 0x7; |
| 1017 | mr->ul.sub.rx_qual = val[2] & 0x7; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1018 | } |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1019 | |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1020 | mr->bs_power = *TLVP_VAL(&tp, RSL_IE_BS_POWER); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1021 | |
| 1022 | /* Optional Parts */ |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1023 | if (TLVP_PRESENT(&tp, RSL_IE_MS_TIMING_OFFSET)) |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1024 | mr->ms_timing_offset = |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1025 | *TLVP_VAL(&tp, RSL_IE_MS_TIMING_OFFSET); |
| 1026 | |
Harald Welte | fe9af26 | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 1027 | if (TLVP_PRESENT(&tp, RSL_IE_L1_INFO)) { |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1028 | val = TLVP_VAL(&tp, RSL_IE_L1_INFO); |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1029 | mr->flags |= MEAS_REP_F_MS_L1; |
| 1030 | mr->ms_l1.pwr = ms_pwr_dbm(msg->trx->bts->band, val[0] >> 3); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1031 | if (val[0] & 0x04) |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1032 | mr->flags |= MEAS_REP_F_FPC; |
| 1033 | mr->ms_l1.ta = val[1]; |
Harald Welte | fe9af26 | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 1034 | } |
Harald Welte | f7c4352 | 2009-06-09 20:24:21 +0000 | [diff] [blame] | 1035 | if (TLVP_PRESENT(&tp, RSL_IE_L3_INFO)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1036 | msg->l3h = (uint8_t *) TLVP_VAL(&tp, RSL_IE_L3_INFO); |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1037 | rc = gsm48_parse_meas_rep(mr, msg); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 1038 | if (rc < 0) |
| 1039 | return rc; |
| 1040 | } |
| 1041 | |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 1042 | print_meas_rep(mr); |
Harald Welte | 60d68f1 | 2009-06-05 20:07:43 +0000 | [diff] [blame] | 1043 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1044 | send_lchan_signal(S_LCHAN_MEAS_REP, msg->lchan, mr); |
Harald Welte | dbb1d88 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 1045 | |
Harald Welte | 75d34a8 | 2009-05-23 06:11:13 +0000 | [diff] [blame] | 1046 | return 0; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1047 | } |
| 1048 | |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1049 | /* Chapter 8.4.7 */ |
| 1050 | static int rsl_rx_hando_det(struct msgb *msg) |
| 1051 | { |
| 1052 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1053 | struct tlv_parsed tp; |
| 1054 | |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1055 | DEBUGP(DRSL, "%s HANDOVER DETECT ", gsm_lchan_name(msg->lchan)); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1056 | |
| 1057 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1058 | |
| 1059 | if (TLVP_PRESENT(&tp, RSL_IE_ACCESS_DELAY)) |
| 1060 | DEBUGPC(DRSL, "access delay = %u\n", |
| 1061 | *TLVP_VAL(&tp, RSL_IE_ACCESS_DELAY)); |
| 1062 | else |
| 1063 | DEBUGPC(DRSL, "\n"); |
| 1064 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame] | 1065 | send_lchan_signal(S_LCHAN_HANDOVER_DETECT, msg->lchan, NULL); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1066 | |
| 1067 | return 0; |
| 1068 | } |
| 1069 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1070 | static int abis_rsl_rx_dchan(struct msgb *msg) |
| 1071 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1072 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1073 | int rc = 0; |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1074 | char *ts_name; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1075 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1076 | msg->lchan = lchan_lookup(msg->trx, rslh->chan_nr); |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1077 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1078 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1079 | switch (rslh->c.msg_type) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1080 | case RSL_MT_CHAN_ACTIV_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1081 | DEBUGP(DRSL, "%s CHANNEL ACTIVATE ACK\n", ts_name); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1082 | rc = rsl_rx_chan_act_ack(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1083 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1084 | case RSL_MT_CHAN_ACTIV_NACK: |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1085 | rc = rsl_rx_chan_act_nack(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1086 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1087 | case RSL_MT_CONN_FAIL: |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 1088 | rc = rsl_rx_conn_fail(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1089 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1090 | case RSL_MT_MEAS_RES: |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1091 | rc = rsl_rx_meas_res(msg); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1092 | break; |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1093 | case RSL_MT_HANDO_DET: |
| 1094 | rc = rsl_rx_hando_det(msg); |
| 1095 | break; |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1096 | case RSL_MT_RF_CHAN_REL_ACK: |
Harald Welte | 64bb754 | 2011-01-14 14:16:16 +0100 | [diff] [blame] | 1097 | rc = rsl_rx_rf_chan_rel_ack(msg->lchan); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1098 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1099 | case RSL_MT_MODE_MODIFY_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1100 | DEBUGP(DRSL, "%s CHANNEL MODE MODIFY ACK\n", ts_name); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 1101 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1102 | case RSL_MT_MODE_MODIFY_NACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1103 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL MODE MODIFY NACK\n", ts_name); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 1104 | break; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1105 | case RSL_MT_IPAC_PDCH_ACT_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1106 | DEBUGPC(DRSL, "%s IPAC PDCH ACT ACK\n", ts_name); |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1107 | msg->lchan->ts->flags |= TS_F_PDCH_MODE; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1108 | break; |
| 1109 | case RSL_MT_IPAC_PDCH_ACT_NACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1110 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH ACT NACK\n", ts_name); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1111 | break; |
| 1112 | case RSL_MT_IPAC_PDCH_DEACT_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1113 | DEBUGP(DRSL, "%s IPAC PDCH DEACT ACK\n", ts_name); |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1114 | msg->lchan->ts->flags &= ~TS_F_PDCH_MODE; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1115 | break; |
| 1116 | case RSL_MT_IPAC_PDCH_DEACT_NACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1117 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH DEACT NACK\n", ts_name); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1118 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1119 | case RSL_MT_PHY_CONTEXT_CONF: |
| 1120 | case RSL_MT_PREPROC_MEAS_RES: |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1121 | case RSL_MT_TALKER_DET: |
| 1122 | case RSL_MT_LISTENER_DET: |
| 1123 | case RSL_MT_REMOTE_CODEC_CONF_REP: |
| 1124 | case RSL_MT_MR_CODEC_MOD_ACK: |
| 1125 | case RSL_MT_MR_CODEC_MOD_NACK: |
| 1126 | case RSL_MT_MR_CODEC_MOD_PER: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1127 | LOGP(DRSL, LOGL_NOTICE, "%s Unimplemented Abis RSL DChan " |
| 1128 | "msg 0x%02x\n", ts_name, rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1129 | break; |
| 1130 | default: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1131 | LOGP(DRSL, LOGL_NOTICE, "%s unknown Abis RSL DChan msg 0x%02x\n", |
| 1132 | ts_name, rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1133 | return -EINVAL; |
| 1134 | } |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1135 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1136 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1137 | } |
| 1138 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1139 | static int rsl_rx_error_rep(struct msgb *msg) |
| 1140 | { |
| 1141 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1142 | struct tlv_parsed tp; |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1143 | |
Harald Welte (local) | d48f4eb | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1144 | LOGP(DRSL, LOGL_ERROR, "%s ERROR REPORT ", gsm_trx_name(msg->trx)); |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1145 | |
| 1146 | rsl_tlv_parse(&tp, rslh->data, msgb_l2len(msg)-sizeof(*rslh)); |
| 1147 | |
| 1148 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1149 | print_rsl_cause(LOGL_ERROR, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1150 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1151 | |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1152 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1153 | |
| 1154 | return 0; |
| 1155 | } |
| 1156 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1157 | static int abis_rsl_rx_trx(struct msgb *msg) |
| 1158 | { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1159 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1160 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1161 | |
| 1162 | switch (rslh->msg_type) { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1163 | case RSL_MT_ERROR_REPORT: |
| 1164 | rc = rsl_rx_error_rep(msg); |
| 1165 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1166 | case RSL_MT_RF_RES_IND: |
| 1167 | /* interference on idle channels of TRX */ |
Harald Welte (local) | d48f4eb | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1168 | //DEBUGP(DRSL, "%s RF Resource Indication\n", gsm_trx_name(msg->trx)); |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 1169 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1170 | case RSL_MT_OVERLOAD: |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1171 | /* indicate CCCH / ACCH / processor overload */ |
Harald Welte (local) | d48f4eb | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1172 | LOGP(DRSL, LOGL_ERROR, "%s CCCH/ACCH/CPU Overload\n", |
| 1173 | gsm_trx_name(msg->trx)); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1174 | break; |
| 1175 | default: |
Harald Welte (local) | d48f4eb | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1176 | LOGP(DRSL, LOGL_NOTICE, "%s Unknown Abis RSL TRX message " |
| 1177 | "type 0x%02x\n", gsm_trx_name(msg->trx), rslh->msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1178 | return -EINVAL; |
| 1179 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1180 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1181 | } |
| 1182 | |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1183 | /* If T3101 expires, we never received a response to IMMEDIATE ASSIGN */ |
| 1184 | static void t3101_expired(void *data) |
| 1185 | { |
| 1186 | struct gsm_lchan *lchan = data; |
| 1187 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 1188 | rsl_rf_chan_release(lchan, 1); |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1189 | } |
| 1190 | |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1191 | /* If T3111 expires, we will send the RF Channel Request */ |
| 1192 | static void t3111_expired(void *data) |
| 1193 | { |
| 1194 | struct gsm_lchan *lchan = data; |
| 1195 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 1196 | rsl_rf_chan_release(lchan, 0); |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1197 | } |
| 1198 | |
laforge | cfa4a01 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1199 | #define GSM48_LEN2PLEN(a) (((a) << 2) | 1) |
| 1200 | |
Harald Welte | 2862dca | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1201 | /* Format an IMM ASS REJ according to 04.08 Chapter 9.1.20 */ |
| 1202 | static int rsl_send_imm_ass_rej(struct gsm_bts *bts, |
| 1203 | unsigned int num_req_refs, |
| 1204 | struct gsm48_req_ref *rqd_refs, |
| 1205 | uint8_t wait_ind) |
| 1206 | { |
| 1207 | uint8_t buf[GSM_MACBLOCK_LEN]; |
| 1208 | struct gsm48_imm_ass_rej *iar = (struct gsm48_imm_ass_rej *)buf; |
| 1209 | |
| 1210 | /* create IMMEDIATE ASSIGN REJECT 04.08 message */ |
| 1211 | memset(iar, 0, sizeof(*iar)); |
| 1212 | iar->proto_discr = GSM48_PDISC_RR; |
| 1213 | iar->msg_type = GSM48_MT_RR_IMM_ASS; |
| 1214 | iar->page_mode = GSM48_PM_SAME; |
| 1215 | |
| 1216 | memcpy(&iar->req_ref1, &rqd_refs[0], sizeof(iar->req_ref1)); |
| 1217 | iar->wait_ind1 = wait_ind; |
| 1218 | |
| 1219 | if (num_req_refs >= 2) |
| 1220 | memcpy(&iar->req_ref2, &rqd_refs[1], sizeof(iar->req_ref2)); |
| 1221 | else |
| 1222 | memcpy(&iar->req_ref2, &rqd_refs[0], sizeof(iar->req_ref2)); |
| 1223 | iar->wait_ind2 = wait_ind; |
| 1224 | |
| 1225 | if (num_req_refs >= 3) |
| 1226 | memcpy(&iar->req_ref3, &rqd_refs[2], sizeof(iar->req_ref3)); |
| 1227 | else |
| 1228 | memcpy(&iar->req_ref3, &rqd_refs[0], sizeof(iar->req_ref3)); |
| 1229 | iar->wait_ind3 = wait_ind; |
| 1230 | |
| 1231 | if (num_req_refs >= 4) |
| 1232 | memcpy(&iar->req_ref4, &rqd_refs[3], sizeof(iar->req_ref4)); |
| 1233 | else |
| 1234 | memcpy(&iar->req_ref4, &rqd_refs[0], sizeof(iar->req_ref4)); |
| 1235 | iar->wait_ind4 = wait_ind; |
| 1236 | |
| 1237 | return rsl_imm_assign_cmd(bts, sizeof(iar), (uint8_t *) iar); |
| 1238 | } |
| 1239 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1240 | /* MS has requested a channel on the RACH */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1241 | static int rsl_rx_chan_rqd(struct msgb *msg) |
| 1242 | { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1243 | struct gsm_bts *bts = msg->trx->bts; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1244 | struct abis_rsl_dchan_hdr *rqd_hdr = msgb_l2(msg); |
| 1245 | struct gsm48_req_ref *rqd_ref; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1246 | enum gsm_chan_t lctype; |
Harald Welte | 2cbe092 | 2008-12-29 04:09:31 +0000 | [diff] [blame] | 1247 | enum gsm_chreq_reason_t chreq_reason; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1248 | struct gsm_lchan *lchan; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1249 | uint8_t rqd_ta; |
Holger Hans Peter Freyther | 457c2a8 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1250 | int is_lu; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1251 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1252 | uint16_t arfcn; |
| 1253 | uint8_t ts_number, subch; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1254 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1255 | /* parse request reference to be used in immediate assign */ |
| 1256 | if (rqd_hdr->data[0] != RSL_IE_REQ_REFERENCE) |
| 1257 | return -EINVAL; |
| 1258 | |
| 1259 | rqd_ref = (struct gsm48_req_ref *) &rqd_hdr->data[1]; |
| 1260 | |
| 1261 | /* parse access delay and use as TA */ |
| 1262 | if (rqd_hdr->data[sizeof(struct gsm48_req_ref)+1] != RSL_IE_ACCESS_DELAY) |
| 1263 | return -EINVAL; |
| 1264 | rqd_ta = rqd_hdr->data[sizeof(struct gsm48_req_ref)+2]; |
| 1265 | |
| 1266 | /* determine channel type (SDCCH/TCH_F/TCH_H) based on |
| 1267 | * request reference RA */ |
Holger Hans Peter Freyther | 7889107 | 2010-09-06 09:36:02 +0800 | [diff] [blame] | 1268 | lctype = get_ctype_by_chreq(bts->network, rqd_ref->ra); |
| 1269 | chreq_reason = get_reason_by_chreq(rqd_ref->ra, bts->network->neci); |
Harald Welte | 2cbe092 | 2008-12-29 04:09:31 +0000 | [diff] [blame] | 1270 | |
Harald Welte | ffa55a4 | 2009-12-22 19:07:32 +0100 | [diff] [blame] | 1271 | counter_inc(bts->network->stats.chreq.total); |
Harald Welte | 24ff6ee | 2009-12-22 00:41:05 +0100 | [diff] [blame] | 1272 | |
Holger Hans Peter Freyther | 457c2a8 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1273 | /* |
| 1274 | * We want LOCATION UPDATES to succeed and will assign a TCH |
| 1275 | * if we have no SDCCH available. |
| 1276 | */ |
| 1277 | is_lu = !!(chreq_reason == GSM_CHREQ_REASON_LOCATION_UPD); |
| 1278 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1279 | /* check availability / allocate channel */ |
Holger Hans Peter Freyther | 457c2a8 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1280 | lchan = lchan_alloc(bts, lctype, is_lu); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1281 | if (!lchan) { |
Harald Welte (local) | 2f5df85 | 2009-12-27 13:48:09 +0100 | [diff] [blame] | 1282 | 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] | 1283 | msg->lchan->ts->trx->bts->nr, gsm_lchant_name(lctype), rqd_ref->ra); |
Harald Welte | ffa55a4 | 2009-12-22 19:07:32 +0100 | [diff] [blame] | 1284 | counter_inc(bts->network->stats.chreq.no_channel); |
Harald Welte | 2862dca | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1285 | /* FIXME gather multiple CHAN RQD and reject up to 4 at the same time */ |
| 1286 | if (bts->network->T3122) |
| 1287 | 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] | 1288 | return -ENOMEM; |
| 1289 | } |
| 1290 | |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1291 | if (lchan->state != LCHAN_S_NONE) |
| 1292 | LOGP(DRSL, LOGL_NOTICE, "%s lchan_alloc() returned channel " |
Harald Welte | 1887f9d | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1293 | "in state %s\n", gsm_lchan_name(lchan), |
| 1294 | gsm_lchans_name(lchan->state)); |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 1295 | rsl_lchan_set_state(lchan, LCHAN_S_ACT_REQ); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1296 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1297 | /* save the RACH data as we need it after the CHAN ACT ACK */ |
| 1298 | lchan->rqd_ref = talloc_zero(bts, struct gsm48_req_ref); |
| 1299 | if (!lchan->rqd_ref) { |
| 1300 | LOGP(DRSL, LOGL_ERROR, "Failed to allocate gsm48_req_ref.\n"); |
| 1301 | lchan_free(lchan); |
| 1302 | return -ENOMEM; |
| 1303 | } |
| 1304 | |
| 1305 | memcpy(lchan->rqd_ref, rqd_ref, sizeof(*rqd_ref)); |
| 1306 | lchan->rqd_ta = rqd_ta; |
| 1307 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1308 | ts_number = lchan->ts->nr; |
| 1309 | arfcn = lchan->ts->trx->arfcn; |
| 1310 | subch = lchan->nr; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1311 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 1312 | lchan->encr.alg_id = RSL_ENC_ALG_A5(0); /* no encryption */ |
Harald Welte (local) | 0e451d0 | 2009-08-13 10:14:26 +0200 | [diff] [blame] | 1313 | 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] | 1314 | lchan->bs_power = 0; /* 0dB reduction, output power = Pn */ |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 1315 | lchan->rsl_cmode = RSL_CMOD_SPD_SIGN; |
Harald Welte | 196d052 | 2009-08-28 23:28:28 +0900 | [diff] [blame] | 1316 | lchan->tch_mode = GSM48_CMODE_SIGN; |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1317 | |
| 1318 | /* FIXME: Start another timer or assume the BTS sends a ACK/NACK? */ |
Harald Welte | 8d77b95 | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 1319 | rsl_chan_activate_lchan(lchan, 0x00, rqd_ta, 0); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1320 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1321 | DEBUGP(DRSL, "%s Activating ARFCN(%u) SS(%u) lctype %s " |
| 1322 | "r=%s ra=0x%02x\n", gsm_lchan_name(lchan), arfcn, subch, |
| 1323 | gsm_lchant_name(lchan->type), gsm_chreq_name(chreq_reason), |
| 1324 | rqd_ref->ra); |
| 1325 | return 0; |
| 1326 | } |
| 1327 | |
| 1328 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan) |
| 1329 | { |
| 1330 | struct gsm_bts *bts = lchan->ts->trx->bts; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1331 | uint8_t buf[GSM_MACBLOCK_LEN]; |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1332 | struct gsm48_imm_ass *ia = (struct gsm48_imm_ass *) buf; |
| 1333 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1334 | /* create IMMEDIATE ASSIGN 04.08 messge */ |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1335 | memset(ia, 0, sizeof(*ia)); |
laforge | cfa4a01 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1336 | /* 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] | 1337 | ia->proto_discr = GSM48_PDISC_RR; |
| 1338 | ia->msg_type = GSM48_MT_RR_IMM_ASS; |
| 1339 | ia->page_mode = GSM48_PM_SAME; |
| 1340 | gsm48_lchan2chan_desc(&ia->chan_desc, lchan); |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1341 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1342 | /* use request reference extracted from CHAN_RQD */ |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1343 | memcpy(&ia->req_ref, lchan->rqd_ref, sizeof(ia->req_ref)); |
| 1344 | ia->timing_advance = lchan->rqd_ta; |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1345 | if (!lchan->ts->hopping.enabled) { |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1346 | ia->mob_alloc_len = 0; |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1347 | } else { |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1348 | ia->mob_alloc_len = lchan->ts->hopping.ma_len; |
| 1349 | 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] | 1350 | } |
Harald Welte | a1d39a2 | 2010-06-28 18:41:27 +0200 | [diff] [blame] | 1351 | /* we need to subtract 1 byte from sizeof(*ia) since ia includes the l2_plen field */ |
| 1352 | ia->l2_plen = GSM48_LEN2PLEN((sizeof(*ia)-1) + ia->mob_alloc_len); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1353 | |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1354 | /* Start timer T3101 to wait for GSM48_MT_RR_PAG_RESP */ |
| 1355 | lchan->T3101.cb = t3101_expired; |
| 1356 | lchan->T3101.data = lchan; |
Holger Hans Peter Freyther | c4d88ad | 2009-11-21 21:18:38 +0100 | [diff] [blame] | 1357 | bsc_schedule_timer(&lchan->T3101, bts->network->T3101, 0); |
Holger Freyther | 3186bf2 | 2008-12-29 06:23:49 +0000 | [diff] [blame] | 1358 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1359 | /* 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] | 1360 | 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] | 1361 | } |
| 1362 | |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1363 | /* MS has requested a channel on the RACH */ |
| 1364 | static int rsl_rx_ccch_load(struct msgb *msg) |
| 1365 | { |
| 1366 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1367 | uint16_t pg_buf_space; |
| 1368 | uint16_t rach_slot_count = -1; |
| 1369 | uint16_t rach_busy_count = -1; |
| 1370 | uint16_t rach_access_count = -1; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1371 | |
| 1372 | switch (rslh->data[0]) { |
| 1373 | case RSL_IE_PAGING_LOAD: |
| 1374 | pg_buf_space = rslh->data[1] << 8 | rslh->data[2]; |
Harald Welte | 38e9c82 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1375 | if (is_ipaccess_bts(msg->trx->bts) && pg_buf_space == 0xffff) { |
| 1376 | /* paging load below configured threshold, use 50 as default */ |
| 1377 | pg_buf_space = 50; |
| 1378 | } |
Holger Freyther | 392209c | 2009-02-10 00:06:19 +0000 | [diff] [blame] | 1379 | paging_update_buffer_space(msg->trx->bts, pg_buf_space); |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1380 | break; |
| 1381 | case RSL_IE_RACH_LOAD: |
Holger Freyther | 8c563cf | 2009-02-03 20:08:51 +0000 | [diff] [blame] | 1382 | if (msg->data_len >= 7) { |
| 1383 | rach_slot_count = rslh->data[2] << 8 | rslh->data[3]; |
| 1384 | rach_busy_count = rslh->data[4] << 8 | rslh->data[5]; |
| 1385 | rach_access_count = rslh->data[6] << 8 | rslh->data[7]; |
| 1386 | } |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1387 | break; |
| 1388 | default: |
| 1389 | break; |
| 1390 | } |
| 1391 | |
| 1392 | return 0; |
| 1393 | } |
| 1394 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1395 | static int abis_rsl_rx_cchan(struct msgb *msg) |
| 1396 | { |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1397 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1398 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1399 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1400 | msg->lchan = lchan_lookup(msg->trx, rslh->chan_nr); |
| 1401 | |
| 1402 | switch (rslh->c.msg_type) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1403 | case RSL_MT_CHAN_RQD: |
| 1404 | /* MS has requested a channel on the RACH */ |
| 1405 | rc = rsl_rx_chan_rqd(msg); |
| 1406 | break; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1407 | case RSL_MT_CCCH_LOAD_IND: |
| 1408 | /* current load on the CCCH */ |
| 1409 | rc = rsl_rx_ccch_load(msg); |
| 1410 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1411 | case RSL_MT_DELETE_IND: |
| 1412 | /* CCCH overloaded, IMM_ASSIGN was dropped */ |
| 1413 | case RSL_MT_CBCH_LOAD_IND: |
| 1414 | /* current load on the CBCH */ |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1415 | LOGP(DRSL, LOGL_NOTICE, "Unimplemented Abis RSL TRX message " |
| 1416 | "type 0x%02x\n", rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1417 | break; |
| 1418 | default: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1419 | LOGP(DRSL, LOGL_NOTICE, "Unknown Abis RSL TRX message type " |
| 1420 | "0x%02x\n", rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1421 | return -EINVAL; |
| 1422 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1423 | |
| 1424 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1425 | } |
| 1426 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1427 | static int rsl_rx_rll_err_ind(struct msgb *msg) |
| 1428 | { |
| 1429 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1430 | uint8_t *rlm_cause = rllh->data; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1431 | |
Harald Welte (local) | 9538efc | 2009-12-26 23:55:00 +0100 | [diff] [blame] | 1432 | LOGP(DRLL, LOGL_ERROR, "%s ERROR INDICATION cause=%s\n", |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1433 | gsm_lchan_name(msg->lchan), |
Harald Welte | e95daf1 | 2010-03-25 12:13:02 +0800 | [diff] [blame] | 1434 | rsl_rlm_cause_name(rlm_cause[1])); |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1435 | |
| 1436 | 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] | 1437 | |
Holger Hans Peter Freyther | 3ba36d5 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1438 | if (rlm_cause[1] == RLL_CAUSE_T200_EXPIRED) { |
| 1439 | counter_inc(msg->lchan->ts->trx->bts->network->stats.chan.rll_err); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 1440 | return rsl_rf_chan_release(msg->lchan, 1); |
Holger Hans Peter Freyther | 3ba36d5 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1441 | } |
Harald Welte | 81543bc | 2009-07-04 09:40:05 +0200 | [diff] [blame] | 1442 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1443 | return 0; |
| 1444 | } |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1445 | |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1446 | static void rsl_handle_release(struct gsm_lchan *lchan) |
| 1447 | { |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1448 | int sapi; |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1449 | struct gsm_bts *bts; |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1450 | |
| 1451 | /* maybe we have only brought down one RLL */ |
Holger Hans Peter Freyther | d7fd306 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1452 | if (lchan->state != LCHAN_S_REL_REQ) |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1453 | return; |
| 1454 | |
| 1455 | for (sapi = 0; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 1456 | if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) |
| 1457 | continue; |
Harald Welte | 3a3c277 | 2010-12-24 12:51:07 +0100 | [diff] [blame] | 1458 | 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] | 1459 | gsm_lchan_name(lchan), sapi); |
| 1460 | return; |
| 1461 | } |
| 1462 | |
Holger Hans Peter Freyther | d7fd306 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1463 | |
| 1464 | |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1465 | /* wait a bit to send the RF Channel Release */ |
| 1466 | lchan->T3111.cb = t3111_expired; |
| 1467 | lchan->T3111.data = lchan; |
| 1468 | bts = lchan->ts->trx->bts; |
| 1469 | bsc_schedule_timer(&lchan->T3111, bts->network->T3111, 0); |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1470 | } |
| 1471 | |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1472 | /* ESTABLISH INDICATION, LOCATION AREA UPDATE REQUEST |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1473 | 0x02, 0x06, |
| 1474 | 0x01, 0x20, |
| 1475 | 0x02, 0x00, |
| 1476 | 0x0b, 0x00, 0x0f, 0x05, 0x08, ... */ |
| 1477 | |
| 1478 | static int abis_rsl_rx_rll(struct msgb *msg) |
| 1479 | { |
| 1480 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1481 | int rc = 0; |
| 1482 | char *ts_name; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1483 | uint8_t sapi = rllh->link_id & 7; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1484 | |
| 1485 | msg->lchan = lchan_lookup(msg->trx, rllh->chan_nr); |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1486 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1487 | DEBUGP(DRLL, "%s SAPI=%u ", ts_name, sapi); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1488 | |
| 1489 | switch (rllh->c.msg_type) { |
| 1490 | case RSL_MT_DATA_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1491 | DEBUGPC(DRLL, "DATA INDICATION\n"); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1492 | if (msgb_l2len(msg) > |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1493 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1494 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1495 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | daef606 | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1496 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1497 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1498 | break; |
| 1499 | case RSL_MT_EST_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1500 | DEBUGPC(DRLL, "ESTABLISH INDICATION\n"); |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1501 | /* lchan is established, stop T3101 */ |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1502 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_MS; |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1503 | bsc_del_timer(&msg->lchan->T3101); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1504 | if (msgb_l2len(msg) > |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1505 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1506 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1507 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | daef606 | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1508 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1509 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1510 | break; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1511 | case RSL_MT_EST_CONF: |
Harald Welte | 1c40927 | 2009-08-09 14:13:58 +0200 | [diff] [blame] | 1512 | DEBUGPC(DRLL, "ESTABLISH CONFIRM\n"); |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1513 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_NET; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1514 | rll_indication(msg->lchan, rllh->link_id, |
| 1515 | BSC_RLLR_IND_EST_CONF); |
| 1516 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1517 | case RSL_MT_REL_IND: |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1518 | /* BTS informs us of having received DISC from MS */ |
Harald Welte | 602f2b8 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1519 | DEBUGPC(DRLL, "RELEASE INDICATION\n"); |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1520 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1521 | rll_indication(msg->lchan, rllh->link_id, |
| 1522 | BSC_RLLR_IND_REL_IND); |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1523 | rsl_handle_release(msg->lchan); |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1524 | rsl_lchan_rll_release(msg->lchan, rllh->link_id); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1525 | break; |
| 1526 | case RSL_MT_REL_CONF: |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1527 | /* BTS informs us of having received UA from MS, |
| 1528 | * in response to DISC that we've sent earlier */ |
Harald Welte | 602f2b8 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1529 | DEBUGPC(DRLL, "RELEASE CONFIRMATION\n"); |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1530 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1531 | rsl_handle_release(msg->lchan); |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1532 | rsl_lchan_rll_release(msg->lchan, rllh->link_id); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1533 | break; |
| 1534 | case RSL_MT_ERROR_IND: |
| 1535 | rc = rsl_rx_rll_err_ind(msg); |
| 1536 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1537 | case RSL_MT_UNIT_DATA_IND: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1538 | LOGP(DRLL, LOGL_NOTICE, "unimplemented Abis RLL message " |
| 1539 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1540 | break; |
| 1541 | default: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1542 | LOGP(DRLL, LOGL_NOTICE, "unknown Abis RLL message " |
| 1543 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1544 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1545 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1546 | } |
| 1547 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1548 | static uint8_t ipa_smod_s_for_lchan(struct gsm_lchan *lchan) |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1549 | { |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1550 | switch (lchan->tch_mode) { |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1551 | case GSM48_CMODE_SPEECH_V1: |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1552 | switch (lchan->type) { |
| 1553 | case GSM_LCHAN_TCH_F: |
| 1554 | return 0x00; |
| 1555 | case GSM_LCHAN_TCH_H: |
| 1556 | return 0x03; |
| 1557 | default: |
| 1558 | break; |
| 1559 | } |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1560 | case GSM48_CMODE_SPEECH_EFR: |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1561 | switch (lchan->type) { |
| 1562 | case GSM_LCHAN_TCH_F: |
| 1563 | return 0x01; |
| 1564 | /* there's no half-rate EFR */ |
| 1565 | default: |
| 1566 | break; |
| 1567 | } |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1568 | case GSM48_CMODE_SPEECH_AMR: |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1569 | switch (lchan->type) { |
| 1570 | case GSM_LCHAN_TCH_F: |
| 1571 | return 0x02; |
| 1572 | case GSM_LCHAN_TCH_H: |
| 1573 | return 0x05; |
| 1574 | default: |
| 1575 | break; |
| 1576 | } |
| 1577 | default: |
| 1578 | break; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1579 | } |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1580 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access speech mode for " |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1581 | "tch_mode == 0x%02x\n", lchan->tch_mode); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1582 | return 0; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1583 | } |
| 1584 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1585 | static uint8_t ipa_rtp_pt_for_lchan(struct gsm_lchan *lchan) |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1586 | { |
Holger Hans Peter Freyther | 8cc5903 | 2010-11-14 21:09:08 +0100 | [diff] [blame] | 1587 | struct gsm_network *net = lchan->ts->trx->bts->network; |
| 1588 | |
| 1589 | /* allow to hardcode the rtp payload */ |
| 1590 | if (net->hardcoded_rtp_payload != 0) |
| 1591 | return net->hardcoded_rtp_payload; |
| 1592 | |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1593 | switch (lchan->tch_mode) { |
| 1594 | case GSM48_CMODE_SPEECH_V1: |
| 1595 | switch (lchan->type) { |
| 1596 | case GSM_LCHAN_TCH_F: |
| 1597 | return RTP_PT_GSM_FULL; |
| 1598 | case GSM_LCHAN_TCH_H: |
| 1599 | return RTP_PT_GSM_HALF; |
| 1600 | default: |
| 1601 | break; |
| 1602 | } |
| 1603 | case GSM48_CMODE_SPEECH_EFR: |
| 1604 | switch (lchan->type) { |
| 1605 | case GSM_LCHAN_TCH_F: |
| 1606 | return RTP_PT_GSM_EFR; |
| 1607 | /* there's no half-rate EFR */ |
| 1608 | default: |
| 1609 | break; |
| 1610 | } |
| 1611 | case GSM48_CMODE_SPEECH_AMR: |
| 1612 | switch (lchan->type) { |
| 1613 | case GSM_LCHAN_TCH_F: |
| 1614 | return RTP_PT_AMR_FULL; |
| 1615 | case GSM_LCHAN_TCH_H: |
| 1616 | return RTP_PT_AMR_HALF; |
| 1617 | default: |
| 1618 | break; |
| 1619 | } |
| 1620 | default: |
| 1621 | break; |
| 1622 | } |
| 1623 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access rtp payload type for " |
| 1624 | "tch_mode == 0x%02x\n & lchan_type == %d", |
| 1625 | lchan->tch_mode, lchan->type); |
| 1626 | return 0; |
| 1627 | } |
| 1628 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1629 | /* ip.access specific RSL extensions */ |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1630 | static void ipac_parse_rtp(struct gsm_lchan *lchan, struct tlv_parsed *tv) |
| 1631 | { |
| 1632 | struct in_addr ip; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1633 | uint16_t port, conn_id; |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1634 | |
| 1635 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_IP)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1636 | 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] | 1637 | DEBUGPC(DRSL, "LOCAL_IP=%s ", inet_ntoa(ip)); |
| 1638 | lchan->abis_ip.bound_ip = ntohl(ip.s_addr); |
| 1639 | } |
| 1640 | |
| 1641 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_PORT)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1642 | port = *((uint16_t *) TLVP_VAL(tv, RSL_IE_IPAC_LOCAL_PORT)); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1643 | port = ntohs(port); |
| 1644 | DEBUGPC(DRSL, "LOCAL_PORT=%u ", port); |
| 1645 | lchan->abis_ip.bound_port = port; |
| 1646 | } |
| 1647 | |
| 1648 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_CONN_ID)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1649 | conn_id = *((uint16_t *) TLVP_VAL(tv, RSL_IE_IPAC_CONN_ID)); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1650 | conn_id = ntohs(conn_id); |
| 1651 | DEBUGPC(DRSL, "CON_ID=%u ", conn_id); |
| 1652 | lchan->abis_ip.conn_id = conn_id; |
| 1653 | } |
| 1654 | |
| 1655 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_RTP_PAYLOAD2)) { |
| 1656 | lchan->abis_ip.rtp_payload2 = |
| 1657 | *TLVP_VAL(tv, RSL_IE_IPAC_RTP_PAYLOAD2); |
| 1658 | DEBUGPC(DRSL, "RTP_PAYLOAD2=0x%02x ", |
| 1659 | lchan->abis_ip.rtp_payload2); |
| 1660 | } |
| 1661 | |
| 1662 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_SPEECH_MODE)) { |
| 1663 | lchan->abis_ip.speech_mode = |
| 1664 | *TLVP_VAL(tv, RSL_IE_IPAC_SPEECH_MODE); |
| 1665 | DEBUGPC(DRSL, "speech_mode=0x%02x ", |
| 1666 | lchan->abis_ip.speech_mode); |
| 1667 | } |
| 1668 | |
| 1669 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_IP)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1670 | 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] | 1671 | DEBUGPC(DRSL, "REMOTE_IP=%s ", inet_ntoa(ip)); |
| 1672 | lchan->abis_ip.connect_ip = ntohl(ip.s_addr); |
| 1673 | } |
| 1674 | |
| 1675 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_PORT)) { |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1676 | port = *((uint16_t *) TLVP_VAL(tv, RSL_IE_IPAC_REMOTE_PORT)); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1677 | port = ntohs(port); |
| 1678 | DEBUGPC(DRSL, "REMOTE_PORT=%u ", port); |
| 1679 | lchan->abis_ip.connect_port = port; |
| 1680 | } |
| 1681 | } |
| 1682 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1683 | int rsl_ipacc_crcx(struct gsm_lchan *lchan) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1684 | { |
| 1685 | struct msgb *msg = rsl_msgb_alloc(); |
| 1686 | struct abis_rsl_dchan_hdr *dh; |
| 1687 | |
| 1688 | 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] | 1689 | init_dchan_hdr(dh, RSL_MT_IPAC_CRCX); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1690 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
| 1691 | dh->chan_nr = lchan2chan_nr(lchan); |
| 1692 | |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1693 | /* 0x1- == receive-only, 0x-1 == EFR codec */ |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1694 | lchan->abis_ip.speech_mode = 0x10 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1695 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1696 | 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] | 1697 | 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] | 1698 | |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1699 | DEBUGP(DRSL, "%s IPAC_BIND speech_mode=0x%02x RTP_PAYLOAD=%d\n", |
| 1700 | gsm_lchan_name(lchan), lchan->abis_ip.speech_mode, |
| 1701 | lchan->abis_ip.rtp_payload); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1702 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1703 | msg->trx = lchan->ts->trx; |
| 1704 | |
| 1705 | return abis_rsl_sendmsg(msg); |
| 1706 | } |
| 1707 | |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1708 | int rsl_ipacc_mdcx(struct gsm_lchan *lchan, uint32_t ip, uint16_t port, |
| 1709 | uint8_t rtp_payload2) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1710 | { |
| 1711 | struct msgb *msg = rsl_msgb_alloc(); |
| 1712 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1713 | uint32_t *att_ip; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1714 | struct in_addr ia; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1715 | |
| 1716 | 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] | 1717 | init_dchan_hdr(dh, RSL_MT_IPAC_MDCX); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1718 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
| 1719 | dh->chan_nr = lchan2chan_nr(lchan); |
| 1720 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1721 | /* we need to store these now as MDCX_ACK does not return them :( */ |
| 1722 | lchan->abis_ip.rtp_payload2 = rtp_payload2; |
| 1723 | lchan->abis_ip.connect_port = port; |
| 1724 | lchan->abis_ip.connect_ip = ip; |
| 1725 | |
Harald Welte | 58ca5b7 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 1726 | /* 0x0- == both directions, 0x-1 == EFR codec */ |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1727 | lchan->abis_ip.speech_mode = 0x00 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1728 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | 58ca5b7 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 1729 | |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1730 | ia.s_addr = htonl(ip); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1731 | DEBUGP(DRSL, "%s IPAC_MDCX IP=%s PORT=%d RTP_PAYLOAD=%d RTP_PAYLOAD2=%d " |
| 1732 | "CONN_ID=%d speech_mode=0x%02x\n", gsm_lchan_name(lchan), |
| 1733 | inet_ntoa(ia), port, lchan->abis_ip.rtp_payload, rtp_payload2, |
| 1734 | lchan->abis_ip.conn_id, lchan->abis_ip.speech_mode); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1735 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1736 | msgb_tv16_put(msg, RSL_IE_IPAC_CONN_ID, lchan->abis_ip.conn_id); |
| 1737 | msgb_v_put(msg, RSL_IE_IPAC_REMOTE_IP); |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1738 | att_ip = (uint32_t *) msgb_put(msg, sizeof(ip)); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1739 | *att_ip = ia.s_addr; |
| 1740 | msgb_tv16_put(msg, RSL_IE_IPAC_REMOTE_PORT, port); |
| 1741 | 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] | 1742 | 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] | 1743 | if (rtp_payload2) |
| 1744 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD2, rtp_payload2); |
| 1745 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1746 | msg->trx = lchan->ts->trx; |
| 1747 | |
| 1748 | return abis_rsl_sendmsg(msg); |
| 1749 | } |
| 1750 | |
Harald Welte | a72273e | 2009-12-20 16:51:09 +0100 | [diff] [blame] | 1751 | /* tell BTS to connect RTP stream to our local RTP socket */ |
| 1752 | int rsl_ipacc_mdcx_to_rtpsock(struct gsm_lchan *lchan) |
| 1753 | { |
| 1754 | struct rtp_socket *rs = lchan->abis_ip.rtp_socket; |
| 1755 | int rc; |
| 1756 | |
| 1757 | rc = rsl_ipacc_mdcx(lchan, ntohl(rs->rtp.sin_local.sin_addr.s_addr), |
| 1758 | ntohs(rs->rtp.sin_local.sin_port), |
| 1759 | /* FIXME: use RTP payload of bound socket, not BTS*/ |
| 1760 | lchan->abis_ip.rtp_payload2); |
| 1761 | |
| 1762 | return rc; |
| 1763 | } |
| 1764 | |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 1765 | 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] | 1766 | { |
| 1767 | struct msgb *msg = rsl_msgb_alloc(); |
| 1768 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | c42ad8b | 2011-04-18 17:04:00 +0200 | [diff] [blame] | 1769 | uint8_t msg_type; |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1770 | |
| 1771 | if (act) |
| 1772 | msg_type = RSL_MT_IPAC_PDCH_ACT; |
| 1773 | else |
| 1774 | msg_type = RSL_MT_IPAC_PDCH_DEACT; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1775 | |
| 1776 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1777 | init_dchan_hdr(dh, msg_type); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1778 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 1779 | dh->chan_nr = ts2chan_nr(ts, 0); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1780 | |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 1781 | DEBUGP(DRSL, "%s IPAC_PDCH_%sACT\n", gsm_ts_name(ts), |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1782 | act ? "" : "DE"); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1783 | |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 1784 | msg->trx = ts->trx; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1785 | |
| 1786 | return abis_rsl_sendmsg(msg); |
| 1787 | } |
| 1788 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1789 | static int abis_rsl_rx_ipacc_crcx_ack(struct msgb *msg) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1790 | { |
| 1791 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1792 | struct tlv_parsed tv; |
Harald Welte | 2c82899 | 2009-12-02 01:56:49 +0530 | [diff] [blame] | 1793 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1794 | |
| 1795 | /* the BTS has acknowledged a local bind, it now tells us the IP |
| 1796 | * address and port number to which it has bound the given logical |
| 1797 | * channel */ |
| 1798 | |
| 1799 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1800 | if (!TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_PORT) || |
| 1801 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_IP) || |
Harald Welte | 86c162d | 2009-07-12 09:45:05 +0200 | [diff] [blame] | 1802 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_CONN_ID)) { |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1803 | LOGP(DRSL, LOGL_NOTICE, "mandatory IE missing"); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1804 | return -EINVAL; |
| 1805 | } |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1806 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1807 | ipac_parse_rtp(lchan, &tv); |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1808 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1809 | dispatch_signal(SS_ABISIP, S_ABISIP_CRCX_ACK, msg->lchan); |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 1810 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1811 | return 0; |
| 1812 | } |
| 1813 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1814 | static int abis_rsl_rx_ipacc_mdcx_ack(struct msgb *msg) |
| 1815 | { |
| 1816 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1817 | struct tlv_parsed tv; |
| 1818 | struct gsm_lchan *lchan = msg->lchan; |
| 1819 | |
| 1820 | /* the BTS has acknowledged a remote connect request and |
| 1821 | * it now tells us the IP address and port number to which it has |
| 1822 | * connected the given logical channel */ |
| 1823 | |
| 1824 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1825 | ipac_parse_rtp(lchan, &tv); |
| 1826 | dispatch_signal(SS_ABISIP, S_ABISIP_MDCX_ACK, msg->lchan); |
| 1827 | |
| 1828 | return 0; |
| 1829 | } |
| 1830 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1831 | static int abis_rsl_rx_ipacc_dlcx_ind(struct msgb *msg) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1832 | { |
| 1833 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1834 | struct tlv_parsed tv; |
| 1835 | |
| 1836 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1837 | |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1838 | if (TLVP_PRESENT(&tv, RSL_IE_CAUSE)) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1839 | print_rsl_cause(LOGL_DEBUG, TLVP_VAL(&tv, RSL_IE_CAUSE), |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1840 | TLVP_LEN(&tv, RSL_IE_CAUSE)); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1841 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1842 | dispatch_signal(SS_ABISIP, S_ABISIP_DLCX_IND, msg->lchan); |
Harald Welte | 888b114 | 2009-07-28 18:02:05 +0200 | [diff] [blame] | 1843 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1844 | return 0; |
| 1845 | } |
| 1846 | |
| 1847 | static int abis_rsl_rx_ipacc(struct msgb *msg) |
| 1848 | { |
| 1849 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1850 | char *ts_name; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1851 | int rc = 0; |
| 1852 | |
| 1853 | msg->lchan = lchan_lookup(msg->trx, rllh->chan_nr); |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1854 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1855 | |
| 1856 | switch (rllh->c.msg_type) { |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1857 | case RSL_MT_IPAC_CRCX_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1858 | DEBUGP(DRSL, "%s IPAC_CRCX_ACK ", ts_name); |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1859 | rc = abis_rsl_rx_ipacc_crcx_ack(msg); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1860 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1861 | case RSL_MT_IPAC_CRCX_NACK: |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1862 | /* somehow the BTS was unable to bind the lchan to its local |
| 1863 | * port?!? */ |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1864 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_CRCX_NACK\n", ts_name); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1865 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1866 | case RSL_MT_IPAC_MDCX_ACK: |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1867 | /* the BTS tells us that a connect operation was successful */ |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1868 | DEBUGP(DRSL, "%s IPAC_MDCX_ACK ", ts_name); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1869 | rc = abis_rsl_rx_ipacc_mdcx_ack(msg); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1870 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1871 | case RSL_MT_IPAC_MDCX_NACK: |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1872 | /* somehow the BTS was unable to connect the lchan to a remote |
| 1873 | * port */ |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1874 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_MDCX_NACK\n", ts_name); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1875 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1876 | case RSL_MT_IPAC_DLCX_IND: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1877 | DEBUGP(DRSL, "%s IPAC_DLCX_IND ", ts_name); |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1878 | rc = abis_rsl_rx_ipacc_dlcx_ind(msg); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1879 | break; |
| 1880 | default: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1881 | LOGP(DRSL, LOGL_NOTICE, "Unknown ip.access msg_type 0x%02x\n", |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1882 | rllh->c.msg_type); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1883 | break; |
| 1884 | } |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 1885 | DEBUGPC(DRSL, "\n"); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1886 | |
| 1887 | return rc; |
| 1888 | } |
| 1889 | |
| 1890 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1891 | /* Entry-point where L2 RSL from BTS enters */ |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1892 | int abis_rsl_rcvmsg(struct msgb *msg) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1893 | { |
Holger Hans Peter Freyther | 19bab73 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 1894 | struct abis_rsl_common_hdr *rslh; |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 1895 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1896 | |
Holger Hans Peter Freyther | 19bab73 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 1897 | if (!msg) { |
| 1898 | DEBUGP(DRSL, "Empty RSL msg?..\n"); |
| 1899 | return -1; |
| 1900 | } |
| 1901 | |
| 1902 | if (msgb_l2len(msg) < sizeof(*rslh)) { |
| 1903 | DEBUGP(DRSL, "Truncated RSL message with l2len: %u\n", msgb_l2len(msg)); |
| 1904 | return -1; |
| 1905 | } |
| 1906 | |
| 1907 | rslh = msgb_l2(msg); |
| 1908 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1909 | switch (rslh->msg_discr & 0xfe) { |
| 1910 | case ABIS_RSL_MDISC_RLL: |
| 1911 | rc = abis_rsl_rx_rll(msg); |
| 1912 | break; |
| 1913 | case ABIS_RSL_MDISC_DED_CHAN: |
| 1914 | rc = abis_rsl_rx_dchan(msg); |
| 1915 | break; |
| 1916 | case ABIS_RSL_MDISC_COM_CHAN: |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1917 | rc = abis_rsl_rx_cchan(msg); |
| 1918 | break; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1919 | case ABIS_RSL_MDISC_TRX: |
| 1920 | rc = abis_rsl_rx_trx(msg); |
| 1921 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1922 | case ABIS_RSL_MDISC_LOC: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1923 | LOGP(DRSL, LOGL_NOTICE, "unimplemented RSL msg disc 0x%02x\n", |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 1924 | rslh->msg_discr); |
| 1925 | break; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1926 | case ABIS_RSL_MDISC_IPACCESS: |
| 1927 | rc = abis_rsl_rx_ipacc(msg); |
| 1928 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1929 | default: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1930 | LOGP(DRSL, LOGL_NOTICE, "unknown RSL message discriminator " |
| 1931 | "0x%02x\n", rslh->msg_discr); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1932 | return -EINVAL; |
| 1933 | } |
Harald Welte | 4f4a390 | 2008-12-26 00:04:49 +0000 | [diff] [blame] | 1934 | msgb_free(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1935 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1936 | } |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 1937 | |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 1938 | /* From Table 10.5.33 of GSM 04.08 */ |
| 1939 | int rsl_number_of_paging_subchannels(struct gsm_bts *bts) |
| 1940 | { |
Harald Welte | a43f789 | 2009-12-01 18:04:30 +0530 | [diff] [blame] | 1941 | if (bts->si_common.chan_desc.ccch_conf == RSL_BCCH_CCCH_CONF_1_C) { |
| 1942 | return MAX(1, (3 - bts->si_common.chan_desc.bs_ag_blks_res)) |
| 1943 | * (bts->si_common.chan_desc.bs_pa_mfrms + 2); |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 1944 | } else { |
Harald Welte | a43f789 | 2009-12-01 18:04:30 +0530 | [diff] [blame] | 1945 | return (9 - bts->si_common.chan_desc.bs_ag_blks_res) |
| 1946 | * (bts->si_common.chan_desc.bs_pa_mfrms + 2); |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 1947 | } |
| 1948 | } |
Holger Hans Peter Freyther | 8cb4a0f | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 1949 | |
| 1950 | int rsl_sms_cb_command(struct gsm_bts *bts, uint8_t chan_number, |
| 1951 | uint8_t cb_command, const uint8_t *data, int len) |
| 1952 | { |
| 1953 | struct abis_rsl_dchan_hdr *dh; |
| 1954 | struct msgb *cb_cmd; |
| 1955 | |
| 1956 | cb_cmd = rsl_msgb_alloc(); |
| 1957 | if (!cb_cmd) |
| 1958 | return -1; |
| 1959 | |
| 1960 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(cb_cmd, sizeof*dh); |
| 1961 | init_dchan_hdr(dh, RSL_MT_SMS_BC_CMD); |
| 1962 | dh->chan_nr = RSL_CHAN_SDCCH4_ACCH; /* TODO: check the chan config */ |
| 1963 | |
| 1964 | msgb_tv_put(cb_cmd, RSL_IE_CB_CMD_TYPE, cb_command); |
| 1965 | msgb_tlv_put(cb_cmd, RSL_IE_SMSCB_MSG, len, data); |
| 1966 | |
| 1967 | cb_cmd->trx = bts->c0; |
| 1968 | |
| 1969 | return abis_rsl_sendmsg(cb_cmd); |
| 1970 | } |