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 |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 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 |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <stdio.h> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 25 | #include <stdlib.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 26 | #include <errno.h> |
| 27 | #include <sys/types.h> |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 28 | #include <netinet/in.h> |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 29 | #include <arpa/inet.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 30 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 31 | #include <openbsc/gsm_data.h> |
| 32 | #include <openbsc/gsm_04_08.h> |
Harald Welte | dfe6c7d | 2010-02-20 16:24:02 +0100 | [diff] [blame] | 33 | #include <osmocore/gsm_utils.h> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 34 | #include <openbsc/abis_rsl.h> |
| 35 | #include <openbsc/chan_alloc.h> |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 36 | #include <openbsc/bsc_rll.h> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 37 | #include <openbsc/debug.h> |
Harald Welte | dfe6c7d | 2010-02-20 16:24:02 +0100 | [diff] [blame] | 38 | #include <osmocore/tlv.h> |
Holger Freyther | 392209c | 2009-02-10 00:06:19 +0000 | [diff] [blame] | 39 | #include <openbsc/paging.h> |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 40 | #include <openbsc/signal.h> |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 41 | #include <openbsc/meas_rep.h> |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 42 | #include <openbsc/rtp_proxy.h> |
Harald Welte | 2e411c7 | 2010-03-01 21:59:06 +0100 | [diff] [blame] | 43 | #include <osmocore/rsl.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 44 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 45 | #include <osmocore/talloc.h> |
| 46 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 47 | #define RSL_ALLOC_SIZE 1024 |
| 48 | #define RSL_ALLOC_HEADROOM 128 |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 49 | |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 50 | #define MAX(a, b) (a) >= (b) ? (a) : (b) |
| 51 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 52 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan); |
| 53 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame^] | 54 | static void send_lchan_signal(int sig_no, struct gsm_lchan *lchan, |
| 55 | struct gsm_meas_rep *resp) |
| 56 | { |
| 57 | struct lchan_signal_data sig; |
| 58 | sig.lchan = lchan; |
| 59 | sig.mr = resp; |
| 60 | dispatch_signal(SS_LCHAN, sig_no, &sig); |
| 61 | } |
| 62 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 63 | static u_int8_t mdisc_by_msgtype(u_int8_t msg_type) |
| 64 | { |
| 65 | /* mask off the transparent bit ? */ |
| 66 | msg_type &= 0xfe; |
| 67 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 68 | if ((msg_type & 0xf0) == 0x00) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 69 | return ABIS_RSL_MDISC_RLL; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 70 | if ((msg_type & 0xf0) == 0x10) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 71 | if (msg_type >= 0x19 && msg_type <= 0x22) |
| 72 | return ABIS_RSL_MDISC_TRX; |
| 73 | else |
| 74 | return ABIS_RSL_MDISC_COM_CHAN; |
| 75 | } |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 76 | if ((msg_type & 0xe0) == 0x20) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 77 | return ABIS_RSL_MDISC_DED_CHAN; |
| 78 | |
| 79 | return ABIS_RSL_MDISC_LOC; |
| 80 | } |
| 81 | |
| 82 | static inline void init_dchan_hdr(struct abis_rsl_dchan_hdr *dh, |
| 83 | u_int8_t msg_type) |
| 84 | { |
| 85 | dh->c.msg_discr = mdisc_by_msgtype(msg_type); |
| 86 | dh->c.msg_type = msg_type; |
| 87 | dh->ie_chan = RSL_IE_CHAN_NR; |
| 88 | } |
| 89 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 90 | /* determine logical channel based on TRX and channel number IE */ |
| 91 | struct gsm_lchan *lchan_lookup(struct gsm_bts_trx *trx, u_int8_t chan_nr) |
| 92 | { |
| 93 | struct gsm_lchan *lchan; |
| 94 | u_int8_t ts_nr = chan_nr & 0x07; |
| 95 | u_int8_t cbits = chan_nr >> 3; |
| 96 | u_int8_t lch_idx; |
| 97 | struct gsm_bts_trx_ts *ts = &trx->ts[ts_nr]; |
| 98 | |
| 99 | if (cbits == 0x01) { |
| 100 | lch_idx = 0; /* TCH/F */ |
Harald Welte | a1499d0 | 2009-10-24 10:25:50 +0200 | [diff] [blame] | 101 | if (ts->pchan != GSM_PCHAN_TCH_F && |
| 102 | ts->pchan != GSM_PCHAN_PDCH && |
| 103 | ts->pchan != GSM_PCHAN_TCH_F_PDCH) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 104 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 105 | chan_nr, ts->pchan); |
| 106 | } else if ((cbits & 0x1e) == 0x02) { |
| 107 | lch_idx = cbits & 0x1; /* TCH/H */ |
| 108 | if (ts->pchan != GSM_PCHAN_TCH_H) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 109 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 110 | chan_nr, ts->pchan); |
| 111 | } else if ((cbits & 0x1c) == 0x04) { |
| 112 | lch_idx = cbits & 0x3; /* SDCCH/4 */ |
| 113 | if (ts->pchan != GSM_PCHAN_CCCH_SDCCH4) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 114 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 115 | chan_nr, ts->pchan); |
| 116 | } else if ((cbits & 0x18) == 0x08) { |
| 117 | lch_idx = cbits & 0x7; /* SDCCH/8 */ |
| 118 | if (ts->pchan != GSM_PCHAN_SDCCH8_SACCH8C) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 119 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 120 | chan_nr, ts->pchan); |
| 121 | } else if (cbits == 0x10 || cbits == 0x11 || cbits == 0x12) { |
| 122 | lch_idx = 0; |
| 123 | if (ts->pchan != GSM_PCHAN_CCCH && |
| 124 | ts->pchan != GSM_PCHAN_CCCH_SDCCH4) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 125 | LOGP(DRSL, LOGL_ERROR, "chan_nr=0x%02x but pchan=%u\n", |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 126 | chan_nr, ts->pchan); |
| 127 | /* FIXME: we should not return first sdcch4 !!! */ |
| 128 | } else { |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 129 | LOGP(DRSL, LOGL_ERROR, "unknown chan_nr=0x%02x\n", chan_nr); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 130 | return NULL; |
| 131 | } |
| 132 | |
| 133 | lchan = &ts->lchan[lch_idx]; |
Harald Welte | dc5062b | 2010-03-26 21:28:59 +0800 | [diff] [blame] | 134 | log_set_context(BSC_CTX_LCHAN, lchan); |
Holger Hans Peter Freyther | 2412a07 | 2010-06-28 15:47:12 +0800 | [diff] [blame] | 135 | if (lchan->conn) |
| 136 | log_set_context(BSC_CTX_SUBSCR, lchan->conn->subscr); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 137 | |
| 138 | return lchan; |
| 139 | } |
| 140 | |
Holger Hans Peter Freyther | e81a610 | 2009-10-22 11:47:45 +0200 | [diff] [blame] | 141 | /* See Table 10.5.25 of GSM04.08 */ |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 142 | static u_int8_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] | 143 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 144 | u_int8_t cbits, chan_nr; |
| 145 | |
| 146 | switch (ts->pchan) { |
| 147 | case GSM_PCHAN_TCH_F: |
Harald Welte | a1499d0 | 2009-10-24 10:25:50 +0200 | [diff] [blame] | 148 | case GSM_PCHAN_PDCH: |
| 149 | case GSM_PCHAN_TCH_F_PDCH: |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 150 | cbits = 0x01; |
| 151 | break; |
| 152 | case GSM_PCHAN_TCH_H: |
| 153 | cbits = 0x02; |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 154 | cbits += lchan_nr; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 155 | break; |
| 156 | case GSM_PCHAN_CCCH_SDCCH4: |
| 157 | cbits = 0x04; |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 158 | cbits += lchan_nr; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 159 | break; |
| 160 | case GSM_PCHAN_SDCCH8_SACCH8C: |
| 161 | cbits = 0x08; |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 162 | cbits += lchan_nr; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 163 | break; |
| 164 | default: |
| 165 | case GSM_PCHAN_CCCH: |
| 166 | cbits = 0x10; |
| 167 | break; |
| 168 | } |
| 169 | |
| 170 | chan_nr = (cbits << 3) | (ts->nr & 0x7); |
| 171 | |
| 172 | return chan_nr; |
| 173 | } |
| 174 | |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 175 | u_int8_t lchan2chan_nr(const struct gsm_lchan *lchan) |
| 176 | { |
| 177 | return ts2chan_nr(lchan->ts, lchan->nr); |
| 178 | } |
| 179 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 180 | /* As per TS 03.03 Section 2.2, the IMSI has 'not more than 15 digits' */ |
| 181 | u_int64_t str_to_imsi(const char *imsi_str) |
| 182 | { |
| 183 | u_int64_t ret; |
| 184 | |
| 185 | ret = strtoull(imsi_str, NULL, 10); |
| 186 | |
| 187 | return ret; |
| 188 | } |
| 189 | |
| 190 | /* Table 5 Clause 7 TS 05.02 */ |
| 191 | unsigned int n_pag_blocks(int bs_ccch_sdcch_comb, unsigned int bs_ag_blks_res) |
| 192 | { |
| 193 | if (!bs_ccch_sdcch_comb) |
| 194 | return 9 - bs_ag_blks_res; |
| 195 | else |
| 196 | return 3 - bs_ag_blks_res; |
| 197 | } |
| 198 | |
| 199 | /* Chapter 6.5.2 of TS 05.02 */ |
| 200 | unsigned int get_ccch_group(u_int64_t imsi, unsigned int bs_cc_chans, |
| 201 | unsigned int n_pag_blocks) |
| 202 | { |
| 203 | return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) / n_pag_blocks; |
| 204 | } |
| 205 | |
| 206 | /* Chapter 6.5.2 of TS 05.02 */ |
| 207 | unsigned int get_paging_group(u_int64_t imsi, unsigned int bs_cc_chans, |
| 208 | int n_pag_blocks) |
| 209 | { |
| 210 | return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) % n_pag_blocks; |
| 211 | } |
| 212 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 213 | static struct msgb *rsl_msgb_alloc(void) |
| 214 | { |
Harald Welte | 966636f | 2009-06-26 19:39:35 +0200 | [diff] [blame] | 215 | return msgb_alloc_headroom(RSL_ALLOC_SIZE, RSL_ALLOC_HEADROOM, |
| 216 | "RSL"); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 217 | } |
| 218 | |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 219 | #define MACBLOCK_SIZE 23 |
| 220 | static void pad_macblock(u_int8_t *out, const u_int8_t *in, int len) |
| 221 | { |
| 222 | memcpy(out, in, len); |
| 223 | |
| 224 | if (len < MACBLOCK_SIZE) |
| 225 | memset(out+len, 0x2b, MACBLOCK_SIZE-len); |
| 226 | } |
| 227 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 228 | /* Chapter 9.3.7: Encryption Information */ |
| 229 | static int build_encr_info(u_int8_t *out, struct gsm_lchan *lchan) |
| 230 | { |
| 231 | *out++ = lchan->encr.alg_id & 0xff; |
| 232 | if (lchan->encr.key_len) |
| 233 | memcpy(out, lchan->encr.key, lchan->encr.key_len); |
| 234 | return lchan->encr.key_len + 1; |
| 235 | } |
| 236 | |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 237 | static void print_rsl_cause(int lvl, const u_int8_t *cause_v, u_int8_t cause_len) |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 238 | { |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 239 | int i; |
| 240 | |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 241 | LOGPC(DRSL, lvl, "CAUSE=0x%02x(%s) ", |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 242 | cause_v[0], rsl_err_name(cause_v[0])); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 243 | for (i = 1; i < cause_len-1; i++) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 244 | LOGPC(DRSL, lvl, "%02x ", cause_v[i]); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 245 | } |
| 246 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 247 | /* Send a BCCH_INFO message as per Chapter 8.5.1 */ |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 248 | int rsl_bcch_info(struct gsm_bts_trx *trx, u_int8_t type, |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 249 | const u_int8_t *data, int len) |
| 250 | { |
| 251 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 252 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 253 | |
| 254 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof*dh); |
| 255 | init_dchan_hdr(dh, RSL_MT_BCCH_INFO); |
| 256 | dh->chan_nr = RSL_CHAN_BCCH; |
| 257 | |
| 258 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
| 259 | msgb_tlv_put(msg, RSL_IE_FULL_BCCH_INFO, len, data); |
| 260 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 261 | msg->trx = trx; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 262 | |
| 263 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 264 | } |
| 265 | |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 266 | int rsl_sacch_filling(struct gsm_bts_trx *trx, u_int8_t type, |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 267 | const u_int8_t *data, int len) |
| 268 | { |
| 269 | struct abis_rsl_common_hdr *ch; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 270 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 271 | |
| 272 | ch = (struct abis_rsl_common_hdr *) msgb_put(msg, sizeof(*ch)); |
| 273 | ch->msg_discr = ABIS_RSL_MDISC_TRX; |
| 274 | ch->msg_type = RSL_MT_SACCH_FILL; |
| 275 | |
| 276 | msgb_tv_put(msg, RSL_IE_SYSINFO_TYPE, type); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 277 | msgb_tl16v_put(msg, RSL_IE_L3_INFO, len, data); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 278 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 279 | msg->trx = trx; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 280 | |
| 281 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 282 | } |
| 283 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 284 | int rsl_chan_bs_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int db) |
| 285 | { |
| 286 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 287 | struct msgb *msg; |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 288 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 289 | |
| 290 | db = abs(db); |
| 291 | if (db > 30) |
| 292 | return -EINVAL; |
| 293 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 294 | msg = rsl_msgb_alloc(); |
| 295 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 296 | lchan->bs_power = db/2; |
| 297 | if (fpc) |
| 298 | lchan->bs_power |= 0x10; |
| 299 | |
| 300 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 301 | init_dchan_hdr(dh, RSL_MT_BS_POWER_CONTROL); |
| 302 | dh->chan_nr = chan_nr; |
| 303 | |
| 304 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 305 | |
| 306 | msg->trx = lchan->ts->trx; |
| 307 | |
| 308 | return abis_rsl_sendmsg(msg); |
| 309 | } |
| 310 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 311 | int rsl_chan_ms_power_ctrl(struct gsm_lchan *lchan, unsigned int fpc, int dbm) |
| 312 | { |
| 313 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 314 | struct msgb *msg; |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 315 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 316 | int ctl_lvl; |
| 317 | |
Harald Welte | 66b6a8d | 2009-08-09 14:45:18 +0200 | [diff] [blame] | 318 | ctl_lvl = ms_pwr_ctl_lvl(lchan->ts->trx->bts->band, dbm); |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 319 | if (ctl_lvl < 0) |
| 320 | return ctl_lvl; |
| 321 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 322 | msg = rsl_msgb_alloc(); |
| 323 | |
Harald Welte | fcd2445 | 2009-06-20 18:15:19 +0200 | [diff] [blame] | 324 | lchan->ms_power = ctl_lvl; |
| 325 | |
| 326 | if (fpc) |
| 327 | lchan->ms_power |= 0x20; |
| 328 | |
| 329 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 330 | init_dchan_hdr(dh, RSL_MT_MS_POWER_CONTROL); |
| 331 | dh->chan_nr = chan_nr; |
| 332 | |
| 333 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
| 334 | |
| 335 | msg->trx = lchan->ts->trx; |
| 336 | |
| 337 | return abis_rsl_sendmsg(msg); |
| 338 | } |
| 339 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 340 | static int channel_mode_from_lchan(struct rsl_ie_chan_mode *cm, |
| 341 | struct gsm_lchan *lchan) |
| 342 | { |
| 343 | memset(cm, 0, sizeof(cm)); |
| 344 | |
| 345 | /* FIXME: what to do with data calls ? */ |
Holger Hans Peter Freyther | 5a3a61d | 2010-09-06 09:25:48 +0800 | [diff] [blame] | 346 | if (lchan->ts->trx->bts->network->dtx_enabled) |
| 347 | cm->dtx_dtu = 0x03; |
| 348 | else |
| 349 | cm->dtx_dtu = 0x00; |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 350 | |
| 351 | /* set TCH Speech/Data */ |
| 352 | cm->spd_ind = lchan->rsl_cmode; |
| 353 | |
Harald Welte | 1a79d36 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 354 | if (lchan->rsl_cmode == RSL_CMOD_SPD_SIGN && |
| 355 | lchan->tch_mode != GSM48_CMODE_SIGN) |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 356 | LOGP(DRSL, LOGL_ERROR, "unsupported: rsl_mode == signalling, " |
Harald Welte | 1a79d36 | 2009-11-27 08:55:16 +0100 | [diff] [blame] | 357 | "but tch_mode != signalling\n"); |
| 358 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 359 | switch (lchan->type) { |
| 360 | case GSM_LCHAN_SDCCH: |
| 361 | cm->chan_rt = RSL_CMOD_CRT_SDCCH; |
| 362 | break; |
| 363 | case GSM_LCHAN_TCH_F: |
| 364 | cm->chan_rt = RSL_CMOD_CRT_TCH_Bm; |
| 365 | break; |
| 366 | case GSM_LCHAN_TCH_H: |
| 367 | cm->chan_rt = RSL_CMOD_CRT_TCH_Lm; |
| 368 | break; |
| 369 | case GSM_LCHAN_NONE: |
| 370 | case GSM_LCHAN_UNKNOWN: |
| 371 | default: |
| 372 | return -EINVAL; |
| 373 | } |
| 374 | |
| 375 | switch (lchan->tch_mode) { |
| 376 | case GSM48_CMODE_SIGN: |
| 377 | cm->chan_rate = 0; |
| 378 | break; |
| 379 | case GSM48_CMODE_SPEECH_V1: |
| 380 | cm->chan_rate = RSL_CMOD_SP_GSM1; |
| 381 | break; |
| 382 | case GSM48_CMODE_SPEECH_EFR: |
| 383 | cm->chan_rate = RSL_CMOD_SP_GSM2; |
| 384 | break; |
| 385 | case GSM48_CMODE_SPEECH_AMR: |
| 386 | cm->chan_rate = RSL_CMOD_SP_GSM3; |
| 387 | break; |
| 388 | case GSM48_CMODE_DATA_14k5: |
| 389 | cm->chan_rate = RSL_CMOD_SP_NT_14k5; |
| 390 | break; |
| 391 | case GSM48_CMODE_DATA_12k0: |
| 392 | cm->chan_rate = RSL_CMOD_SP_NT_12k0; |
| 393 | break; |
| 394 | case GSM48_CMODE_DATA_6k0: |
| 395 | cm->chan_rate = RSL_CMOD_SP_NT_6k0; |
| 396 | break; |
| 397 | default: |
| 398 | return -EINVAL; |
| 399 | } |
| 400 | |
| 401 | return 0; |
| 402 | } |
| 403 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 404 | /* Chapter 8.4.1 */ |
Harald Welte | ddab3c7 | 2009-02-28 13:19:15 +0000 | [diff] [blame] | 405 | #if 0 |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 406 | int rsl_chan_activate(struct gsm_bts_trx *trx, u_int8_t chan_nr, |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 407 | u_int8_t act_type, |
| 408 | struct rsl_ie_chan_mode *chan_mode, |
| 409 | struct rsl_ie_chan_ident *chan_ident, |
| 410 | u_int8_t bs_power, u_int8_t ms_power, |
| 411 | u_int8_t ta) |
| 412 | { |
| 413 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 414 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 415 | |
| 416 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 417 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 418 | dh->chan_nr = chan_nr; |
| 419 | |
| 420 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
| 421 | /* For compatibility with Phase 1 */ |
| 422 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(*chan_mode), |
| 423 | (u_int8_t *) chan_mode); |
| 424 | msgb_tlv_put(msg, RSL_IE_CHAN_IDENT, 4, |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 425 | (u_int8_t *) chan_ident); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 426 | #if 0 |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 427 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, 1, |
| 428 | (u_int8_t *) &encr_info); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 429 | #endif |
Harald Welte | d4c9bf3 | 2009-02-15 16:56:18 +0000 | [diff] [blame] | 430 | msgb_tv_put(msg, RSL_IE_BS_POWER, bs_power); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 431 | msgb_tv_put(msg, RSL_IE_MS_POWER, ms_power); |
| 432 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
| 433 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 434 | msg->trx = trx; |
| 435 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 436 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 437 | } |
Harald Welte | ddab3c7 | 2009-02-28 13:19:15 +0000 | [diff] [blame] | 438 | #endif |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 439 | |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 440 | int rsl_chan_activate_lchan(struct gsm_lchan *lchan, u_int8_t act_type, |
Harald Welte | 8d77b95 | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 441 | u_int8_t ta, u_int8_t ho_ref) |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 442 | { |
| 443 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 444 | struct msgb *msg; |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 445 | int rc; |
Harald Welte | 93d50e6 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 446 | uint8_t *len; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 447 | |
| 448 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 449 | struct rsl_ie_chan_mode cm; |
laforge | 694a5cf | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 450 | struct gsm48_chan_desc cd; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 451 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 452 | rc = channel_mode_from_lchan(&cm, lchan); |
| 453 | if (rc < 0) |
| 454 | return rc; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 455 | |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 456 | memset(&cd, 0, sizeof(cd)); |
laforge | 694a5cf | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 457 | gsm48_lchan2chan_desc(&cd, lchan); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 458 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 459 | msg = rsl_msgb_alloc(); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 460 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 461 | init_dchan_hdr(dh, RSL_MT_CHAN_ACTIV); |
| 462 | dh->chan_nr = chan_nr; |
| 463 | |
| 464 | msgb_tv_put(msg, RSL_IE_ACT_TYPE, act_type); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 465 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
| 466 | (u_int8_t *) &cm); |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 467 | |
| 468 | /* |
| 469 | * The Channel Identification is needed for Phase1 phones |
| 470 | * and it contains the GSM48 Channel Description and the |
| 471 | * Mobile Allocation. The GSM 08.58 asks for the Mobile |
| 472 | * Allocation to have a length of zero. We are using the |
| 473 | * msgb_l3len to calculate the length of both messages. |
| 474 | */ |
laforge | 694a5cf | 2010-06-20 21:38:19 +0200 | [diff] [blame] | 475 | msgb_v_put(msg, RSL_IE_CHAN_IDENT); |
Harald Welte | 93d50e6 | 2010-06-29 17:53:45 +0200 | [diff] [blame] | 476 | len = msgb_put(msg, 1); |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 477 | 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] | 478 | |
| 479 | if (lchan->ts->hopping.enabled) |
| 480 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, lchan->ts->hopping.ma_len, |
| 481 | lchan->ts->hopping.ma_data); |
| 482 | else |
| 483 | msgb_tlv_put(msg, GSM48_IE_MA_AFTER, 0, NULL); |
Holger Hans Peter Freyther | e38bd6c | 2010-06-30 11:56:43 +0800 | [diff] [blame] | 484 | |
| 485 | /* update the calculated size */ |
| 486 | msg->l3h = len + 1; |
| 487 | *len = msgb_l3len(msg); |
| 488 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 489 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
| 490 | u_int8_t encr_info[MAX_A5_KEY_LEN+2]; |
| 491 | rc = build_encr_info(encr_info, lchan); |
| 492 | if (rc > 0) |
| 493 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 494 | } |
| 495 | |
Harald Welte | 8d77b95 | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 496 | switch (act_type) { |
| 497 | case RSL_ACT_INTER_ASYNC: |
| 498 | case RSL_ACT_INTER_SYNC: |
| 499 | msgb_tv_put(msg, RSL_IE_HANDO_REF, ho_ref); |
| 500 | break; |
| 501 | default: |
| 502 | break; |
| 503 | } |
| 504 | |
Harald Welte | d4c9bf3 | 2009-02-15 16:56:18 +0000 | [diff] [blame] | 505 | msgb_tv_put(msg, RSL_IE_BS_POWER, lchan->bs_power); |
| 506 | msgb_tv_put(msg, RSL_IE_MS_POWER, lchan->ms_power); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 507 | msgb_tv_put(msg, RSL_IE_TIMING_ADVANCE, ta); |
| 508 | |
Holger Hans Peter Freyther | 93b6c65 | 2010-01-28 04:45:05 +0100 | [diff] [blame] | 509 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) |
| 510 | msgb_tlv_put(msg, RSL_IE_MR_CONFIG, sizeof(lchan->mr_conf), |
| 511 | (u_int8_t *) &lchan->mr_conf); |
| 512 | |
Harald Welte | e79769b | 2009-02-07 00:48:17 +0000 | [diff] [blame] | 513 | msg->trx = lchan->ts->trx; |
| 514 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 515 | return abis_rsl_sendmsg(msg); |
| 516 | } |
| 517 | |
Harald Welte | 470abb7 | 2009-07-29 11:38:15 +0200 | [diff] [blame] | 518 | /* Chapter 8.4.9: Modify channel mode on BTS side */ |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 519 | int rsl_chan_mode_modify_req(struct gsm_lchan *lchan) |
| 520 | { |
| 521 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 522 | struct msgb *msg; |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 523 | int rc; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 524 | |
| 525 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 526 | struct rsl_ie_chan_mode cm; |
| 527 | |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 528 | rc = channel_mode_from_lchan(&cm, lchan); |
| 529 | if (rc < 0) |
| 530 | return rc; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 531 | |
Harald Welte | eab3335 | 2009-06-27 03:09:08 +0200 | [diff] [blame] | 532 | msg = rsl_msgb_alloc(); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 533 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 534 | init_dchan_hdr(dh, RSL_MT_MODE_MODIFY_REQ); |
| 535 | dh->chan_nr = chan_nr; |
| 536 | |
| 537 | msgb_tlv_put(msg, RSL_IE_CHAN_MODE, sizeof(cm), |
| 538 | (u_int8_t *) &cm); |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 539 | |
| 540 | if (lchan->encr.alg_id > RSL_ENC_ALG_A5(0)) { |
| 541 | u_int8_t encr_info[MAX_A5_KEY_LEN+2]; |
| 542 | rc = build_encr_info(encr_info, lchan); |
| 543 | if (rc > 0) |
| 544 | msgb_tlv_put(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 545 | } |
| 546 | |
Holger Hans Peter Freyther | ea52802 | 2009-11-18 22:57:02 +0100 | [diff] [blame] | 547 | if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR) { |
| 548 | msgb_tlv_put(msg, RSL_IE_MR_CONFIG, sizeof(lchan->mr_conf), |
| 549 | (u_int8_t *) &lchan->mr_conf); |
| 550 | } |
| 551 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 552 | msg->trx = lchan->ts->trx; |
| 553 | |
| 554 | return abis_rsl_sendmsg(msg); |
| 555 | } |
| 556 | |
| 557 | /* Chapter 8.4.6: Send the encryption command with given L3 info */ |
| 558 | int rsl_encryption_cmd(struct msgb *msg) |
| 559 | { |
| 560 | struct abis_rsl_dchan_hdr *dh; |
| 561 | struct gsm_lchan *lchan = msg->lchan; |
| 562 | u_int8_t chan_nr = lchan2chan_nr(lchan); |
| 563 | u_int8_t encr_info[MAX_A5_KEY_LEN+2]; |
Sylvain Munaut | 82aa684 | 2009-09-27 11:13:18 +0200 | [diff] [blame] | 564 | u_int8_t l3_len = msg->len; |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 565 | int rc; |
| 566 | |
| 567 | /* First push the L3 IE tag and length */ |
| 568 | msgb_tv16_push(msg, RSL_IE_L3_INFO, l3_len); |
| 569 | |
| 570 | /* then the link identifier (SAPI0, main sign link) */ |
| 571 | msgb_tv_push(msg, RSL_IE_LINK_IDENT, 0); |
| 572 | |
| 573 | /* then encryption information */ |
| 574 | rc = build_encr_info(encr_info, lchan); |
| 575 | if (rc <= 0) |
| 576 | return rc; |
| 577 | msgb_tlv_push(msg, RSL_IE_ENCR_INFO, rc, encr_info); |
| 578 | |
| 579 | /* and finally the DCHAN header */ |
| 580 | dh = (struct abis_rsl_dchan_hdr *) msgb_push(msg, sizeof(*dh)); |
| 581 | init_dchan_hdr(dh, RSL_MT_ENCR_CMD); |
| 582 | dh->chan_nr = chan_nr; |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 583 | |
| 584 | msg->trx = lchan->ts->trx; |
| 585 | |
| 586 | return abis_rsl_sendmsg(msg); |
| 587 | } |
| 588 | |
Harald Welte | 115d103 | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 589 | /* 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] | 590 | int rsl_deact_sacch(struct gsm_lchan *lchan) |
| 591 | { |
| 592 | struct abis_rsl_dchan_hdr *dh; |
| 593 | struct msgb *msg = rsl_msgb_alloc(); |
| 594 | |
| 595 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 596 | init_dchan_hdr(dh, RSL_MT_DEACTIVATE_SACCH); |
| 597 | dh->chan_nr = lchan2chan_nr(lchan); |
| 598 | |
| 599 | msg->lchan = lchan; |
| 600 | msg->trx = lchan->ts->trx; |
| 601 | |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 602 | DEBUGP(DRSL, "%s DEACTivate SACCH CMD\n", gsm_lchan_name(lchan)); |
Harald Welte | ae0f236 | 2009-07-19 18:36:49 +0200 | [diff] [blame] | 603 | |
| 604 | return abis_rsl_sendmsg(msg); |
| 605 | } |
| 606 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 607 | static void error_timeout_cb(void *data) |
| 608 | { |
| 609 | struct gsm_lchan *lchan = data; |
| 610 | if (lchan->state != LCHAN_S_REL_ERR) { |
| 611 | LOGP(DRSL, LOGL_ERROR, "%s error timeout but not in error state: %d\n", |
| 612 | gsm_lchan_name(lchan), lchan->state); |
| 613 | return; |
| 614 | } |
| 615 | |
| 616 | /* go back to the none state */ |
| 617 | 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] | 618 | rsl_lchan_set_state(lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 619 | } |
| 620 | |
Harald Welte | 115d103 | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 621 | /* 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] | 622 | static int rsl_rf_chan_release(struct gsm_lchan *lchan, int error) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 623 | { |
| 624 | struct abis_rsl_dchan_hdr *dh; |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 625 | struct msgb *msg; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 626 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 627 | if (lchan->state == LCHAN_S_REL_ERR) { |
| 628 | LOGP(DRSL, LOGL_NOTICE, "%s is in error state not sending release.\n", |
| 629 | gsm_lchan_name(lchan)); |
| 630 | return -1; |
| 631 | } |
| 632 | |
| 633 | msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 634 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 635 | init_dchan_hdr(dh, RSL_MT_RF_CHAN_REL); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 636 | dh->chan_nr = lchan2chan_nr(lchan); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 637 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 638 | msg->lchan = lchan; |
| 639 | msg->trx = lchan->ts->trx; |
| 640 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 641 | DEBUGP(DRSL, "%s RF Channel Release CMD due error %d\n", gsm_lchan_name(lchan), error); |
| 642 | |
| 643 | if (error) { |
| 644 | /* |
| 645 | * the nanoBTS sends RLL release indications after the channel release. This can |
| 646 | * be a problem when we have reassigned the channel to someone else and then can |
| 647 | * not figure out who used this channel. |
| 648 | */ |
Holger Hans Peter Freyther | 44752d9 | 2010-06-08 11:53:33 +0800 | [diff] [blame] | 649 | rsl_lchan_set_state(lchan, LCHAN_S_REL_ERR); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 650 | lchan->error_timer.data = lchan; |
| 651 | lchan->error_timer.cb = error_timeout_cb; |
| 652 | bsc_schedule_timer(&lchan->error_timer, |
| 653 | msg->trx->bts->network->T3111 + 2, 0); |
| 654 | } |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 655 | |
Harald Welte | 115d103 | 2009-08-10 11:43:22 +0200 | [diff] [blame] | 656 | /* BTS will respond by RF CHAN REL ACK */ |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 657 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 658 | } |
| 659 | |
| 660 | int rsl_paging_cmd(struct gsm_bts *bts, u_int8_t paging_group, u_int8_t len, |
| 661 | u_int8_t *ms_ident, u_int8_t chan_needed) |
| 662 | { |
| 663 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 664 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 665 | |
| 666 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 667 | init_dchan_hdr(dh, RSL_MT_PAGING_CMD); |
| 668 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 669 | |
| 670 | msgb_tv_put(msg, RSL_IE_PAGING_GROUP, paging_group); |
Harald Welte | 255539c | 2008-12-28 02:26:27 +0000 | [diff] [blame] | 671 | 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] | 672 | msgb_tv_put(msg, RSL_IE_CHAN_NEEDED, chan_needed); |
| 673 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 674 | msg->trx = bts->c0; |
| 675 | |
| 676 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 677 | } |
| 678 | |
| 679 | int imsi_str2bcd(u_int8_t *bcd_out, const char *str_in) |
| 680 | { |
| 681 | int i, len = strlen(str_in); |
| 682 | |
| 683 | for (i = 0; i < len; i++) { |
| 684 | int num = str_in[i] - 0x30; |
| 685 | if (num < 0 || num > 9) |
| 686 | return -1; |
| 687 | if (i % 2 == 0) |
| 688 | bcd_out[i/2] = num; |
| 689 | else |
| 690 | bcd_out[i/2] |= (num << 4); |
| 691 | } |
| 692 | |
| 693 | return 0; |
| 694 | } |
| 695 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 696 | /* Chapter 8.5.6 */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 697 | int rsl_imm_assign_cmd(struct gsm_bts *bts, u_int8_t len, u_int8_t *val) |
| 698 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 699 | struct msgb *msg = rsl_msgb_alloc(); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 700 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 701 | u_int8_t buf[MACBLOCK_SIZE]; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 702 | |
| 703 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 704 | init_dchan_hdr(dh, RSL_MT_IMMEDIATE_ASSIGN_CMD); |
| 705 | dh->chan_nr = RSL_CHAN_PCH_AGCH; |
| 706 | |
Harald Welte | 362322e | 2009-02-15 14:36:38 +0000 | [diff] [blame] | 707 | switch (bts->type) { |
| 708 | case GSM_BTS_TYPE_BS11: |
| 709 | msgb_tlv_put(msg, RSL_IE_IMM_ASS_INFO, len, val); |
| 710 | break; |
| 711 | default: |
| 712 | /* If phase 2, construct a FULL_IMM_ASS_INFO */ |
| 713 | pad_macblock(buf, val, len); |
| 714 | msgb_tlv_put(msg, RSL_IE_FULL_IMM_ASS_INFO, MACBLOCK_SIZE, buf); |
| 715 | break; |
| 716 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 717 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 718 | msg->trx = bts->c0; |
| 719 | |
| 720 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 721 | } |
| 722 | |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 723 | /* Send Siemens specific MS RF Power Capability Indication */ |
Harald Welte | 31c4893 | 2009-08-10 10:07:33 +0200 | [diff] [blame] | 724 | int rsl_siemens_mrpci(struct gsm_lchan *lchan, struct rsl_mrpci *mrpci) |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 725 | { |
| 726 | struct msgb *msg = rsl_msgb_alloc(); |
| 727 | struct abis_rsl_dchan_hdr *dh; |
| 728 | |
| 729 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
| 730 | init_dchan_hdr(dh, RSL_MT_SIEMENS_MRPCI); |
Harald Welte | 3c456d0 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 731 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 732 | dh->chan_nr = lchan2chan_nr(lchan); |
Harald Welte | 31c4893 | 2009-08-10 10:07:33 +0200 | [diff] [blame] | 733 | msgb_tv_put(msg, RSL_IE_SIEMENS_MRPCI, *(u_int8_t *)mrpci); |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 734 | |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 735 | DEBUGP(DRSL, "%s TX Siemens MRPCI 0x%02x\n", |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 736 | gsm_lchan_name(lchan), *(u_int8_t *)mrpci); |
Harald Welte | 3c456d0 | 2009-08-10 11:26:14 +0200 | [diff] [blame] | 737 | |
| 738 | msg->trx = lchan->ts->trx; |
| 739 | |
Harald Welte | 67fa91b | 2009-08-10 09:51:40 +0200 | [diff] [blame] | 740 | return abis_rsl_sendmsg(msg); |
| 741 | } |
| 742 | |
| 743 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 744 | /* Send "DATA REQUEST" message with given L3 Info payload */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 745 | /* Chapter 8.3.1 */ |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 746 | int rsl_data_request(struct msgb *msg, u_int8_t link_id) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 747 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 748 | if (msg->lchan == NULL) { |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 749 | LOGP(DRSL, LOGL_ERROR, "cannot send DATA REQUEST to unknown lchan\n"); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 750 | return -EINVAL; |
| 751 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 752 | |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 753 | rsl_rll_push_l3(msg, RSL_MT_DATA_REQ, lchan2chan_nr(msg->lchan), |
| 754 | link_id, 1); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 755 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 756 | msg->trx = msg->lchan->ts->trx; |
| 757 | |
| 758 | return abis_rsl_sendmsg(msg); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 759 | } |
| 760 | |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 761 | /* Send "ESTABLISH REQUEST" message with given L3 Info payload */ |
| 762 | /* Chapter 8.3.1 */ |
| 763 | int rsl_establish_request(struct gsm_lchan *lchan, u_int8_t link_id) |
| 764 | { |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 765 | struct msgb *msg; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 766 | |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 767 | msg = rsl_rll_simple(RSL_MT_EST_REQ, lchan2chan_nr(lchan), |
| 768 | link_id, 0); |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 769 | msg->trx = lchan->ts->trx; |
| 770 | |
| 771 | return abis_rsl_sendmsg(msg); |
| 772 | } |
| 773 | |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 774 | /* Chapter 8.3.7 Request the release of multiframe mode of RLL connection. |
| 775 | This is what higher layers should call. The BTS then responds with |
| 776 | RELEASE CONFIRM, which we in turn use to trigger RSL CHANNEL RELEASE, |
| 777 | which in turn is acknowledged by RSL CHANNEL RELEASE ACK, which calls |
| 778 | lchan_free() */ |
Holger Hans Peter Freyther | 4f5848d | 2010-06-08 11:57:45 +0800 | [diff] [blame] | 779 | int rsl_release_request(struct gsm_lchan *lchan, u_int8_t link_id, u_int8_t reason) |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 780 | { |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 781 | |
Harald Welte | 3c9c5f9 | 2010-03-04 10:33:10 +0100 | [diff] [blame] | 782 | struct msgb *msg; |
| 783 | |
| 784 | msg = rsl_rll_simple(RSL_MT_REL_REQ, lchan2chan_nr(lchan), |
| 785 | link_id, 0); |
Holger Hans Peter Freyther | 4f5848d | 2010-06-08 11:57:45 +0800 | [diff] [blame] | 786 | /* 0 is normal release, 1 is local end */ |
| 787 | msgb_tv_put(msg, RSL_IE_RELEASE_MODE, reason); |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 788 | |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 789 | /* FIXME: start some timer in case we don't receive a REL ACK ? */ |
| 790 | |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 791 | msg->trx = lchan->ts->trx; |
| 792 | |
| 793 | return abis_rsl_sendmsg(msg); |
| 794 | } |
| 795 | |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 796 | int rsl_lchan_set_state(struct gsm_lchan *lchan, int state) |
| 797 | { |
| 798 | lchan->state = state; |
| 799 | return 0; |
| 800 | } |
| 801 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 802 | /* Chapter 8.4.2: Channel Activate Acknowledge */ |
| 803 | static int rsl_rx_chan_act_ack(struct msgb *msg) |
| 804 | { |
| 805 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 806 | |
| 807 | /* BTS has confirmed channel activation, we now need |
| 808 | * to assign the activated channel to the MS */ |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 809 | if (rslh->ie_chan != RSL_IE_CHAN_NR) |
| 810 | return -EINVAL; |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 811 | |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 812 | if (msg->lchan->state != LCHAN_S_ACT_REQ) |
Harald Welte | 1887f9d | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 813 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK, but state %s\n", |
| 814 | gsm_lchan_name(msg->lchan), |
| 815 | gsm_lchans_name(msg->lchan->state)); |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 816 | rsl_lchan_set_state(msg->lchan, LCHAN_S_ACTIVE); |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 817 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 818 | if (msg->lchan->rqd_ref) { |
| 819 | rsl_send_imm_assignment(msg->lchan); |
| 820 | talloc_free(msg->lchan->rqd_ref); |
| 821 | msg->lchan->rqd_ref = NULL; |
| 822 | msg->lchan->rqd_ta = 0; |
| 823 | } |
| 824 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame^] | 825 | send_lchan_signal(S_LCHAN_ACTIVATE_ACK, msg->lchan, NULL); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 826 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 827 | return 0; |
| 828 | } |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 829 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 830 | /* Chapter 8.4.3: Channel Activate NACK */ |
| 831 | static int rsl_rx_chan_act_nack(struct msgb *msg) |
| 832 | { |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 833 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 834 | struct tlv_parsed tp; |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 835 | |
Harald Welte (local) | 91b603d | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 836 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL ACTIVATE NACK", |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 837 | gsm_lchan_name(msg->lchan)); |
Harald Welte (local) | 91b603d | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 838 | |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 839 | /* BTS has rejected channel activation ?!? */ |
| 840 | if (dh->ie_chan != RSL_IE_CHAN_NR) |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 841 | return -EINVAL; |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 842 | |
| 843 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 844 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) { |
| 845 | const u_int8_t *cause = TLVP_VAL(&tp, RSL_IE_CAUSE); |
| 846 | print_rsl_cause(LOGL_ERROR, cause, |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 847 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 848 | if (*cause != RSL_ERR_RCH_ALR_ACTV_ALLOC) |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 849 | rsl_lchan_set_state(msg->lchan, LCHAN_S_NONE); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 850 | } else |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 851 | rsl_lchan_set_state(msg->lchan, LCHAN_S_NONE); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 852 | |
Harald Welte (local) | 91b603d | 2009-12-27 11:48:11 +0100 | [diff] [blame] | 853 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
| 854 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame^] | 855 | send_lchan_signal(S_LCHAN_ACTIVATE_NACK, msg->lchan, NULL); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 856 | |
Harald Welte | 3073a9f | 2009-08-09 19:50:08 +0200 | [diff] [blame] | 857 | lchan_free(msg->lchan); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 858 | return 0; |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 859 | } |
| 860 | |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 861 | /* Chapter 8.4.4: Connection Failure Indication */ |
| 862 | static int rsl_rx_conn_fail(struct msgb *msg) |
| 863 | { |
| 864 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 865 | struct tlv_parsed tp; |
| 866 | |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 867 | /* FIXME: print which channel */ |
Harald Welte (local) | fc05750 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 868 | LOGP(DRSL, LOGL_NOTICE, "%s CONNECTION FAIL: RELEASING ", |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 869 | gsm_lchan_name(msg->lchan)); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 870 | |
| 871 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 872 | |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 873 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 874 | print_rsl_cause(LOGL_NOTICE, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 875 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 876 | |
Harald Welte (local) | fc05750 | 2009-12-26 22:33:09 +0100 | [diff] [blame] | 877 | LOGPC(DRSL, LOGL_NOTICE, "\n"); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 878 | /* FIXME: only free it after channel release ACK */ |
Holger Hans Peter Freyther | 3ba36d5 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 879 | 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] | 880 | return rsl_rf_chan_release(msg->lchan, 1); |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 881 | } |
| 882 | |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 883 | static void print_meas_rep_uni(struct gsm_meas_rep_unidir *mru, |
| 884 | const char *prefix) |
| 885 | { |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 886 | DEBUGPC(DMEAS, "RXL-FULL-%s=%3ddBm RXL-SUB-%s=%3ddBm ", |
| 887 | prefix, rxlev2dbm(mru->full.rx_lev), |
| 888 | prefix, rxlev2dbm(mru->sub.rx_lev)); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 889 | DEBUGPC(DMEAS, "RXQ-FULL-%s=%d RXQ-SUB-%s=%d ", |
| 890 | prefix, mru->full.rx_qual, prefix, mru->sub.rx_qual); |
| 891 | } |
| 892 | |
| 893 | static void print_meas_rep(struct gsm_meas_rep *mr) |
| 894 | { |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 895 | int i; |
| 896 | |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 897 | DEBUGP(DMEAS, "MEASUREMENT RESULT NR=%d ", mr->nr); |
| 898 | |
| 899 | if (mr->flags & MEAS_REP_F_DL_DTX) |
| 900 | DEBUGPC(DMEAS, "DTXd "); |
| 901 | |
| 902 | print_meas_rep_uni(&mr->ul, "ul"); |
| 903 | DEBUGPC(DMEAS, "BS_POWER=%d ", mr->bs_power); |
| 904 | if (mr->flags & MEAS_REP_F_MS_TO) |
| 905 | DEBUGPC(DMEAS, "MS_TO=%d ", mr->ms_timing_offset); |
| 906 | |
| 907 | if (mr->flags & MEAS_REP_F_MS_L1) { |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 908 | DEBUGPC(DMEAS, "L1_MS_PWR=%3ddBm ", mr->ms_l1.pwr); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 909 | DEBUGPC(DMEAS, "L1_FPC=%u ", |
| 910 | mr->flags & MEAS_REP_F_FPC ? 1 : 0); |
| 911 | DEBUGPC(DMEAS, "L1_TA=%u ", mr->ms_l1.ta); |
| 912 | } |
| 913 | |
| 914 | if (mr->flags & MEAS_REP_F_UL_DTX) |
| 915 | DEBUGPC(DMEAS, "DTXu "); |
| 916 | if (mr->flags & MEAS_REP_F_BA1) |
| 917 | DEBUGPC(DMEAS, "BA1 "); |
| 918 | if (!(mr->flags & MEAS_REP_F_DL_VALID)) |
| 919 | DEBUGPC(DMEAS, "NOT VALID "); |
| 920 | else |
| 921 | print_meas_rep_uni(&mr->dl, "dl"); |
| 922 | |
| 923 | DEBUGPC(DMEAS, "NUM_NEIGH=%u\n", mr->num_cell); |
Harald Welte | 479015b | 2009-12-19 18:33:05 +0100 | [diff] [blame] | 924 | if (mr->num_cell == 7) |
| 925 | return; |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 926 | for (i = 0; i < mr->num_cell; i++) { |
| 927 | struct gsm_meas_rep_cell *mrc = &mr->cell[i]; |
Harald Welte | 303e5e0 | 2009-12-25 23:02:22 +0100 | [diff] [blame] | 928 | DEBUGP(DMEAS, "IDX=%u ARFCN=%u BSIC=%u => %d dBm\n", |
| 929 | mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev)); |
Harald Welte | 6739dfb | 2009-12-16 16:52:07 +0100 | [diff] [blame] | 930 | } |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 931 | } |
| 932 | |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 933 | static int rsl_rx_meas_res(struct msgb *msg) |
| 934 | { |
| 935 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 936 | struct tlv_parsed tp; |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 937 | struct gsm_meas_rep *mr = lchan_next_meas_rep(msg->lchan); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 938 | u_int8_t len; |
| 939 | const u_int8_t *val; |
| 940 | int rc; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 941 | |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 942 | /* check if this channel is actually active */ |
| 943 | /* FIXME: maybe this check should be way more generic/centralized */ |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 944 | if (msg->lchan->state != LCHAN_S_ACTIVE) { |
Holger Hans Peter Freyther | c44db4a | 2010-07-29 14:50:57 +0800 | [diff] [blame] | 945 | LOGP(DRSL, LOGL_DEBUG, "%s: MEAS RES for inactive channel\n", |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 946 | gsm_lchan_name(msg->lchan)); |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 947 | return 0; |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 948 | } |
Harald Welte | b8bfc56 | 2009-12-21 13:27:11 +0100 | [diff] [blame] | 949 | |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 950 | memset(mr, 0, sizeof(*mr)); |
Harald Welte | 33e6597 | 2009-12-16 23:29:34 +0100 | [diff] [blame] | 951 | mr->lchan = msg->lchan; |
Harald Welte | dbb1d88 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 952 | |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 953 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 954 | |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 955 | if (!TLVP_PRESENT(&tp, RSL_IE_MEAS_RES_NR) || |
| 956 | !TLVP_PRESENT(&tp, RSL_IE_UPLINK_MEAS) || |
| 957 | !TLVP_PRESENT(&tp, RSL_IE_BS_POWER)) |
| 958 | return -EIO; |
| 959 | |
| 960 | /* Mandatory Parts */ |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 961 | mr->nr = *TLVP_VAL(&tp, RSL_IE_MEAS_RES_NR); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 962 | |
| 963 | len = TLVP_LEN(&tp, RSL_IE_UPLINK_MEAS); |
| 964 | val = TLVP_VAL(&tp, RSL_IE_UPLINK_MEAS); |
| 965 | if (len >= 3) { |
| 966 | if (val[0] & 0x40) |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 967 | mr->flags |= MEAS_REP_F_DL_DTX; |
| 968 | mr->ul.full.rx_lev = val[0] & 0x3f; |
| 969 | mr->ul.sub.rx_lev = val[1] & 0x3f; |
| 970 | mr->ul.full.rx_qual = val[2]>>3 & 0x7; |
| 971 | mr->ul.sub.rx_qual = val[2] & 0x7; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 972 | } |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 973 | |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 974 | mr->bs_power = *TLVP_VAL(&tp, RSL_IE_BS_POWER); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 975 | |
| 976 | /* Optional Parts */ |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 977 | if (TLVP_PRESENT(&tp, RSL_IE_MS_TIMING_OFFSET)) |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 978 | mr->ms_timing_offset = |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 979 | *TLVP_VAL(&tp, RSL_IE_MS_TIMING_OFFSET); |
| 980 | |
Harald Welte | fe9af26 | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 981 | if (TLVP_PRESENT(&tp, RSL_IE_L1_INFO)) { |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 982 | val = TLVP_VAL(&tp, RSL_IE_L1_INFO); |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 983 | mr->flags |= MEAS_REP_F_MS_L1; |
| 984 | 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] | 985 | if (val[0] & 0x04) |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 986 | mr->flags |= MEAS_REP_F_FPC; |
| 987 | mr->ms_l1.ta = val[1]; |
Harald Welte | fe9af26 | 2009-06-20 18:44:35 +0200 | [diff] [blame] | 988 | } |
Harald Welte | f7c4352 | 2009-06-09 20:24:21 +0000 | [diff] [blame] | 989 | if (TLVP_PRESENT(&tp, RSL_IE_L3_INFO)) { |
Holger Hans Peter Freyther | ddd918f | 2009-10-22 15:43:55 +0200 | [diff] [blame] | 990 | msg->l3h = (u_int8_t *) TLVP_VAL(&tp, RSL_IE_L3_INFO); |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 991 | rc = gsm48_parse_meas_rep(mr, msg); |
Harald Welte | 3c7dc6e | 2009-11-29 19:07:28 +0100 | [diff] [blame] | 992 | if (rc < 0) |
| 993 | return rc; |
| 994 | } |
| 995 | |
Harald Welte | d12b0fd | 2009-12-15 21:36:05 +0100 | [diff] [blame] | 996 | print_meas_rep(mr); |
Harald Welte | 60d68f1 | 2009-06-05 20:07:43 +0000 | [diff] [blame] | 997 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame^] | 998 | send_lchan_signal(S_LCHAN_MEAS_REP, msg->lchan, mr); |
Harald Welte | dbb1d88 | 2009-11-30 19:16:47 +0100 | [diff] [blame] | 999 | |
Harald Welte | 75d34a8 | 2009-05-23 06:11:13 +0000 | [diff] [blame] | 1000 | return 0; |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1001 | } |
| 1002 | |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1003 | /* Chapter 8.4.7 */ |
| 1004 | static int rsl_rx_hando_det(struct msgb *msg) |
| 1005 | { |
| 1006 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1007 | struct tlv_parsed tp; |
| 1008 | |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1009 | DEBUGP(DRSL, "%s HANDOVER DETECT ", gsm_lchan_name(msg->lchan)); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1010 | |
| 1011 | rsl_tlv_parse(&tp, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1012 | |
| 1013 | if (TLVP_PRESENT(&tp, RSL_IE_ACCESS_DELAY)) |
| 1014 | DEBUGPC(DRSL, "access delay = %u\n", |
| 1015 | *TLVP_VAL(&tp, RSL_IE_ACCESS_DELAY)); |
| 1016 | else |
| 1017 | DEBUGPC(DRSL, "\n"); |
| 1018 | |
Holger Hans Peter Freyther | 08eebd5 | 2010-12-27 13:28:20 +0100 | [diff] [blame^] | 1019 | send_lchan_signal(S_LCHAN_HANDOVER_DETECT, msg->lchan, NULL); |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1020 | |
| 1021 | return 0; |
| 1022 | } |
| 1023 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1024 | static int abis_rsl_rx_dchan(struct msgb *msg) |
| 1025 | { |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1026 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1027 | int rc = 0; |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1028 | char *ts_name; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1029 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1030 | msg->lchan = lchan_lookup(msg->trx, rslh->chan_nr); |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1031 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1032 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1033 | switch (rslh->c.msg_type) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1034 | case RSL_MT_CHAN_ACTIV_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1035 | DEBUGP(DRSL, "%s CHANNEL ACTIVATE ACK\n", ts_name); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1036 | rc = rsl_rx_chan_act_ack(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1037 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1038 | case RSL_MT_CHAN_ACTIV_NACK: |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1039 | rc = rsl_rx_chan_act_nack(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1040 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1041 | case RSL_MT_CONN_FAIL: |
Harald Welte | 7f93cea | 2009-02-23 00:02:59 +0000 | [diff] [blame] | 1042 | rc = rsl_rx_conn_fail(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1043 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1044 | case RSL_MT_MEAS_RES: |
Harald Welte | 440fed0 | 2009-05-01 18:43:47 +0000 | [diff] [blame] | 1045 | rc = rsl_rx_meas_res(msg); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1046 | break; |
Harald Welte | d011e8b | 2009-11-29 22:45:52 +0100 | [diff] [blame] | 1047 | case RSL_MT_HANDO_DET: |
| 1048 | rc = rsl_rx_hando_det(msg); |
| 1049 | break; |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1050 | case RSL_MT_RF_CHAN_REL_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1051 | DEBUGP(DRSL, "%s RF CHANNEL RELEASE ACK\n", ts_name); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 1052 | if (msg->lchan->state != LCHAN_S_REL_REQ && msg->lchan->state != LCHAN_S_REL_ERR) |
Harald Welte | 1887f9d | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1053 | LOGP(DRSL, LOGL_NOTICE, "%s CHAN REL ACK but state %s\n", |
| 1054 | gsm_lchan_name(msg->lchan), |
| 1055 | gsm_lchans_name(msg->lchan->state)); |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1056 | bsc_del_timer(&msg->lchan->T3111); |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 1057 | /* we have an error timer pending to release that */ |
| 1058 | if (msg->lchan->state != LCHAN_S_REL_ERR) |
| 1059 | rsl_lchan_set_state(msg->lchan, LCHAN_S_NONE); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1060 | lchan_free(msg->lchan); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1061 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1062 | case RSL_MT_MODE_MODIFY_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1063 | DEBUGP(DRSL, "%s CHANNEL MODE MODIFY ACK\n", ts_name); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 1064 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1065 | case RSL_MT_MODE_MODIFY_NACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1066 | LOGP(DRSL, LOGL_ERROR, "%s CHANNEL MODE MODIFY NACK\n", ts_name); |
Harald Welte | da78376 | 2009-02-18 03:29:53 +0000 | [diff] [blame] | 1067 | break; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1068 | case RSL_MT_IPAC_PDCH_ACT_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1069 | DEBUGPC(DRSL, "%s IPAC PDCH ACT ACK\n", ts_name); |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1070 | msg->lchan->ts->flags |= TS_F_PDCH_MODE; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1071 | break; |
| 1072 | case RSL_MT_IPAC_PDCH_ACT_NACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1073 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH ACT NACK\n", ts_name); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1074 | break; |
| 1075 | case RSL_MT_IPAC_PDCH_DEACT_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1076 | DEBUGP(DRSL, "%s IPAC PDCH DEACT ACK\n", ts_name); |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1077 | msg->lchan->ts->flags &= ~TS_F_PDCH_MODE; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1078 | break; |
| 1079 | case RSL_MT_IPAC_PDCH_DEACT_NACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1080 | LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH DEACT NACK\n", ts_name); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1081 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1082 | case RSL_MT_PHY_CONTEXT_CONF: |
| 1083 | case RSL_MT_PREPROC_MEAS_RES: |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1084 | case RSL_MT_TALKER_DET: |
| 1085 | case RSL_MT_LISTENER_DET: |
| 1086 | case RSL_MT_REMOTE_CODEC_CONF_REP: |
| 1087 | case RSL_MT_MR_CODEC_MOD_ACK: |
| 1088 | case RSL_MT_MR_CODEC_MOD_NACK: |
| 1089 | case RSL_MT_MR_CODEC_MOD_PER: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1090 | LOGP(DRSL, LOGL_NOTICE, "%s Unimplemented Abis RSL DChan " |
| 1091 | "msg 0x%02x\n", ts_name, rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1092 | break; |
| 1093 | default: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1094 | LOGP(DRSL, LOGL_NOTICE, "%s unknown Abis RSL DChan msg 0x%02x\n", |
| 1095 | ts_name, rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1096 | return -EINVAL; |
| 1097 | } |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1098 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1099 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1100 | } |
| 1101 | |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1102 | static int rsl_rx_error_rep(struct msgb *msg) |
| 1103 | { |
| 1104 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1105 | struct tlv_parsed tp; |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1106 | |
Harald Welte (local) | d48f4eb | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1107 | LOGP(DRSL, LOGL_ERROR, "%s ERROR REPORT ", gsm_trx_name(msg->trx)); |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1108 | |
| 1109 | rsl_tlv_parse(&tp, rslh->data, msgb_l2len(msg)-sizeof(*rslh)); |
| 1110 | |
| 1111 | if (TLVP_PRESENT(&tp, RSL_IE_CAUSE)) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1112 | print_rsl_cause(LOGL_ERROR, TLVP_VAL(&tp, RSL_IE_CAUSE), |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1113 | TLVP_LEN(&tp, RSL_IE_CAUSE)); |
| 1114 | |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1115 | LOGPC(DRSL, LOGL_ERROR, "\n"); |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1116 | |
| 1117 | return 0; |
| 1118 | } |
| 1119 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1120 | static int abis_rsl_rx_trx(struct msgb *msg) |
| 1121 | { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1122 | struct abis_rsl_common_hdr *rslh = msgb_l2(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1123 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1124 | |
| 1125 | switch (rslh->msg_type) { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1126 | case RSL_MT_ERROR_REPORT: |
| 1127 | rc = rsl_rx_error_rep(msg); |
| 1128 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1129 | case RSL_MT_RF_RES_IND: |
| 1130 | /* interference on idle channels of TRX */ |
Harald Welte (local) | d48f4eb | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1131 | //DEBUGP(DRSL, "%s RF Resource Indication\n", gsm_trx_name(msg->trx)); |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 1132 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1133 | case RSL_MT_OVERLOAD: |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1134 | /* indicate CCCH / ACCH / processor overload */ |
Harald Welte (local) | d48f4eb | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1135 | LOGP(DRSL, LOGL_ERROR, "%s CCCH/ACCH/CPU Overload\n", |
| 1136 | gsm_trx_name(msg->trx)); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1137 | break; |
| 1138 | default: |
Harald Welte (local) | d48f4eb | 2009-12-28 23:14:22 +0100 | [diff] [blame] | 1139 | LOGP(DRSL, LOGL_NOTICE, "%s Unknown Abis RSL TRX message " |
| 1140 | "type 0x%02x\n", gsm_trx_name(msg->trx), rslh->msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1141 | return -EINVAL; |
| 1142 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1143 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1144 | } |
| 1145 | |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1146 | /* If T3101 expires, we never received a response to IMMEDIATE ASSIGN */ |
| 1147 | static void t3101_expired(void *data) |
| 1148 | { |
| 1149 | struct gsm_lchan *lchan = data; |
| 1150 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 1151 | rsl_rf_chan_release(lchan, 1); |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1152 | } |
| 1153 | |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1154 | /* If T3111 expires, we will send the RF Channel Request */ |
| 1155 | static void t3111_expired(void *data) |
| 1156 | { |
| 1157 | struct gsm_lchan *lchan = data; |
| 1158 | |
Holger Hans Peter Freyther | 4b4dd10 | 2010-05-31 21:38:24 +0800 | [diff] [blame] | 1159 | rsl_rf_chan_release(lchan, 0); |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1160 | } |
| 1161 | |
laforge | cfa4a01 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1162 | #define GSM48_LEN2PLEN(a) (((a) << 2) | 1) |
| 1163 | |
Harald Welte | 2862dca | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1164 | /* Format an IMM ASS REJ according to 04.08 Chapter 9.1.20 */ |
| 1165 | static int rsl_send_imm_ass_rej(struct gsm_bts *bts, |
| 1166 | unsigned int num_req_refs, |
| 1167 | struct gsm48_req_ref *rqd_refs, |
| 1168 | uint8_t wait_ind) |
| 1169 | { |
| 1170 | uint8_t buf[GSM_MACBLOCK_LEN]; |
| 1171 | struct gsm48_imm_ass_rej *iar = (struct gsm48_imm_ass_rej *)buf; |
| 1172 | |
| 1173 | /* create IMMEDIATE ASSIGN REJECT 04.08 message */ |
| 1174 | memset(iar, 0, sizeof(*iar)); |
| 1175 | iar->proto_discr = GSM48_PDISC_RR; |
| 1176 | iar->msg_type = GSM48_MT_RR_IMM_ASS; |
| 1177 | iar->page_mode = GSM48_PM_SAME; |
| 1178 | |
| 1179 | memcpy(&iar->req_ref1, &rqd_refs[0], sizeof(iar->req_ref1)); |
| 1180 | iar->wait_ind1 = wait_ind; |
| 1181 | |
| 1182 | if (num_req_refs >= 2) |
| 1183 | memcpy(&iar->req_ref2, &rqd_refs[1], sizeof(iar->req_ref2)); |
| 1184 | else |
| 1185 | memcpy(&iar->req_ref2, &rqd_refs[0], sizeof(iar->req_ref2)); |
| 1186 | iar->wait_ind2 = wait_ind; |
| 1187 | |
| 1188 | if (num_req_refs >= 3) |
| 1189 | memcpy(&iar->req_ref3, &rqd_refs[2], sizeof(iar->req_ref3)); |
| 1190 | else |
| 1191 | memcpy(&iar->req_ref3, &rqd_refs[0], sizeof(iar->req_ref3)); |
| 1192 | iar->wait_ind3 = wait_ind; |
| 1193 | |
| 1194 | if (num_req_refs >= 4) |
| 1195 | memcpy(&iar->req_ref4, &rqd_refs[3], sizeof(iar->req_ref4)); |
| 1196 | else |
| 1197 | memcpy(&iar->req_ref4, &rqd_refs[0], sizeof(iar->req_ref4)); |
| 1198 | iar->wait_ind4 = wait_ind; |
| 1199 | |
| 1200 | return rsl_imm_assign_cmd(bts, sizeof(iar), (uint8_t *) iar); |
| 1201 | } |
| 1202 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1203 | /* MS has requested a channel on the RACH */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1204 | static int rsl_rx_chan_rqd(struct msgb *msg) |
| 1205 | { |
Harald Welte | 702d870 | 2008-12-26 20:25:35 +0000 | [diff] [blame] | 1206 | struct gsm_bts *bts = msg->trx->bts; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1207 | struct abis_rsl_dchan_hdr *rqd_hdr = msgb_l2(msg); |
| 1208 | struct gsm48_req_ref *rqd_ref; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1209 | enum gsm_chan_t lctype; |
Harald Welte | 2cbe092 | 2008-12-29 04:09:31 +0000 | [diff] [blame] | 1210 | enum gsm_chreq_reason_t chreq_reason; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1211 | struct gsm_lchan *lchan; |
| 1212 | u_int8_t rqd_ta; |
Holger Hans Peter Freyther | 457c2a8 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1213 | int is_lu; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1214 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1215 | u_int16_t arfcn; |
| 1216 | u_int8_t ts_number, subch; |
| 1217 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1218 | /* parse request reference to be used in immediate assign */ |
| 1219 | if (rqd_hdr->data[0] != RSL_IE_REQ_REFERENCE) |
| 1220 | return -EINVAL; |
| 1221 | |
| 1222 | rqd_ref = (struct gsm48_req_ref *) &rqd_hdr->data[1]; |
| 1223 | |
| 1224 | /* parse access delay and use as TA */ |
| 1225 | if (rqd_hdr->data[sizeof(struct gsm48_req_ref)+1] != RSL_IE_ACCESS_DELAY) |
| 1226 | return -EINVAL; |
| 1227 | rqd_ta = rqd_hdr->data[sizeof(struct gsm48_req_ref)+2]; |
| 1228 | |
| 1229 | /* determine channel type (SDCCH/TCH_F/TCH_H) based on |
| 1230 | * request reference RA */ |
Holger Hans Peter Freyther | 7889107 | 2010-09-06 09:36:02 +0800 | [diff] [blame] | 1231 | lctype = get_ctype_by_chreq(bts->network, rqd_ref->ra); |
| 1232 | chreq_reason = get_reason_by_chreq(rqd_ref->ra, bts->network->neci); |
Harald Welte | 2cbe092 | 2008-12-29 04:09:31 +0000 | [diff] [blame] | 1233 | |
Harald Welte | ffa55a4 | 2009-12-22 19:07:32 +0100 | [diff] [blame] | 1234 | counter_inc(bts->network->stats.chreq.total); |
Harald Welte | 24ff6ee | 2009-12-22 00:41:05 +0100 | [diff] [blame] | 1235 | |
Holger Hans Peter Freyther | 457c2a8 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1236 | /* |
| 1237 | * We want LOCATION UPDATES to succeed and will assign a TCH |
| 1238 | * if we have no SDCCH available. |
| 1239 | */ |
| 1240 | is_lu = !!(chreq_reason == GSM_CHREQ_REASON_LOCATION_UPD); |
| 1241 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1242 | /* check availability / allocate channel */ |
Holger Hans Peter Freyther | 457c2a8 | 2010-09-06 08:58:42 +0800 | [diff] [blame] | 1243 | lchan = lchan_alloc(bts, lctype, is_lu); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1244 | if (!lchan) { |
Harald Welte (local) | 2f5df85 | 2009-12-27 13:48:09 +0100 | [diff] [blame] | 1245 | 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] | 1246 | 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] | 1247 | counter_inc(bts->network->stats.chreq.no_channel); |
Harald Welte | 2862dca | 2010-12-23 14:39:29 +0100 | [diff] [blame] | 1248 | /* FIXME gather multiple CHAN RQD and reject up to 4 at the same time */ |
| 1249 | if (bts->network->T3122) |
| 1250 | 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] | 1251 | return -ENOMEM; |
| 1252 | } |
| 1253 | |
Harald Welte | 8e93b79 | 2009-12-29 10:44:17 +0100 | [diff] [blame] | 1254 | if (lchan->state != LCHAN_S_NONE) |
| 1255 | LOGP(DRSL, LOGL_NOTICE, "%s lchan_alloc() returned channel " |
Harald Welte | 1887f9d | 2009-12-29 10:52:38 +0100 | [diff] [blame] | 1256 | "in state %s\n", gsm_lchan_name(lchan), |
| 1257 | gsm_lchans_name(lchan->state)); |
Holger Hans Peter Freyther | 7441949 | 2010-04-10 00:12:31 +0200 | [diff] [blame] | 1258 | rsl_lchan_set_state(lchan, LCHAN_S_ACT_REQ); |
Harald Welte (local) | 3e46031 | 2009-12-27 18:12:29 +0100 | [diff] [blame] | 1259 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1260 | /* save the RACH data as we need it after the CHAN ACT ACK */ |
| 1261 | lchan->rqd_ref = talloc_zero(bts, struct gsm48_req_ref); |
| 1262 | if (!lchan->rqd_ref) { |
| 1263 | LOGP(DRSL, LOGL_ERROR, "Failed to allocate gsm48_req_ref.\n"); |
| 1264 | lchan_free(lchan); |
| 1265 | return -ENOMEM; |
| 1266 | } |
| 1267 | |
| 1268 | memcpy(lchan->rqd_ref, rqd_ref, sizeof(*rqd_ref)); |
| 1269 | lchan->rqd_ta = rqd_ta; |
| 1270 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1271 | ts_number = lchan->ts->nr; |
| 1272 | arfcn = lchan->ts->trx->arfcn; |
| 1273 | subch = lchan->nr; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1274 | |
Harald Welte | 08d91a5 | 2009-08-30 15:37:11 +0900 | [diff] [blame] | 1275 | lchan->encr.alg_id = RSL_ENC_ALG_A5(0); /* no encryption */ |
Harald Welte (local) | 0e451d0 | 2009-08-13 10:14:26 +0200 | [diff] [blame] | 1276 | 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] | 1277 | lchan->bs_power = 0; /* 0dB reduction, output power = Pn */ |
Harald Welte | 9943c5b | 2009-07-29 15:41:29 +0200 | [diff] [blame] | 1278 | lchan->rsl_cmode = RSL_CMOD_SPD_SIGN; |
Harald Welte | 196d052 | 2009-08-28 23:28:28 +0900 | [diff] [blame] | 1279 | lchan->tch_mode = GSM48_CMODE_SIGN; |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1280 | |
| 1281 | /* FIXME: Start another timer or assume the BTS sends a ACK/NACK? */ |
Harald Welte | 8d77b95 | 2009-12-17 00:31:10 +0100 | [diff] [blame] | 1282 | rsl_chan_activate_lchan(lchan, 0x00, rqd_ta, 0); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1283 | |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1284 | DEBUGP(DRSL, "%s Activating ARFCN(%u) SS(%u) lctype %s " |
| 1285 | "r=%s ra=0x%02x\n", gsm_lchan_name(lchan), arfcn, subch, |
| 1286 | gsm_lchant_name(lchan->type), gsm_chreq_name(chreq_reason), |
| 1287 | rqd_ref->ra); |
| 1288 | return 0; |
| 1289 | } |
| 1290 | |
| 1291 | static int rsl_send_imm_assignment(struct gsm_lchan *lchan) |
| 1292 | { |
| 1293 | struct gsm_bts *bts = lchan->ts->trx->bts; |
| 1294 | u_int8_t buf[GSM_MACBLOCK_LEN]; |
| 1295 | struct gsm48_imm_ass *ia = (struct gsm48_imm_ass *) buf; |
| 1296 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1297 | /* create IMMEDIATE ASSIGN 04.08 messge */ |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1298 | memset(ia, 0, sizeof(*ia)); |
laforge | cfa4a01 | 2010-06-21 12:08:52 +0200 | [diff] [blame] | 1299 | /* 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] | 1300 | ia->proto_discr = GSM48_PDISC_RR; |
| 1301 | ia->msg_type = GSM48_MT_RR_IMM_ASS; |
| 1302 | ia->page_mode = GSM48_PM_SAME; |
| 1303 | gsm48_lchan2chan_desc(&ia->chan_desc, lchan); |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1304 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1305 | /* use request reference extracted from CHAN_RQD */ |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1306 | memcpy(&ia->req_ref, lchan->rqd_ref, sizeof(ia->req_ref)); |
| 1307 | ia->timing_advance = lchan->rqd_ta; |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1308 | if (!lchan->ts->hopping.enabled) { |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1309 | ia->mob_alloc_len = 0; |
Harald Welte | a39b0f2 | 2010-06-14 22:26:10 +0200 | [diff] [blame] | 1310 | } else { |
laforge | 09108bf | 2010-06-20 15:18:46 +0200 | [diff] [blame] | 1311 | ia->mob_alloc_len = lchan->ts->hopping.ma_len; |
| 1312 | 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] | 1313 | } |
Harald Welte | a1d39a2 | 2010-06-28 18:41:27 +0200 | [diff] [blame] | 1314 | /* we need to subtract 1 byte from sizeof(*ia) since ia includes the l2_plen field */ |
| 1315 | ia->l2_plen = GSM48_LEN2PLEN((sizeof(*ia)-1) + ia->mob_alloc_len); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1316 | |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1317 | /* Start timer T3101 to wait for GSM48_MT_RR_PAG_RESP */ |
| 1318 | lchan->T3101.cb = t3101_expired; |
| 1319 | lchan->T3101.data = lchan; |
Holger Hans Peter Freyther | c4d88ad | 2009-11-21 21:18:38 +0100 | [diff] [blame] | 1320 | bsc_schedule_timer(&lchan->T3101, bts->network->T3101, 0); |
Holger Freyther | 3186bf2 | 2008-12-29 06:23:49 +0000 | [diff] [blame] | 1321 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1322 | /* send IMMEDIATE ASSIGN CMD on RSL to BTS (to send on CCCH to MS) */ |
Holger Hans Peter Freyther | 5ba05f4 | 2010-06-22 12:11:59 +0800 | [diff] [blame] | 1323 | return rsl_imm_assign_cmd(bts, sizeof(*ia)+ia->mob_alloc_len, (u_int8_t *) ia); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1324 | } |
| 1325 | |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1326 | /* MS has requested a channel on the RACH */ |
| 1327 | static int rsl_rx_ccch_load(struct msgb *msg) |
| 1328 | { |
| 1329 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
| 1330 | u_int16_t pg_buf_space; |
Holger Freyther | 8c563cf | 2009-02-03 20:08:51 +0000 | [diff] [blame] | 1331 | u_int16_t rach_slot_count = -1; |
| 1332 | u_int16_t rach_busy_count = -1; |
| 1333 | u_int16_t rach_access_count = -1; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1334 | |
| 1335 | switch (rslh->data[0]) { |
| 1336 | case RSL_IE_PAGING_LOAD: |
| 1337 | pg_buf_space = rslh->data[1] << 8 | rslh->data[2]; |
Harald Welte | 38e9c82 | 2010-04-19 10:24:07 +0200 | [diff] [blame] | 1338 | if (is_ipaccess_bts(msg->trx->bts) && pg_buf_space == 0xffff) { |
| 1339 | /* paging load below configured threshold, use 50 as default */ |
| 1340 | pg_buf_space = 50; |
| 1341 | } |
Holger Freyther | 392209c | 2009-02-10 00:06:19 +0000 | [diff] [blame] | 1342 | paging_update_buffer_space(msg->trx->bts, pg_buf_space); |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1343 | break; |
| 1344 | case RSL_IE_RACH_LOAD: |
Holger Freyther | 8c563cf | 2009-02-03 20:08:51 +0000 | [diff] [blame] | 1345 | if (msg->data_len >= 7) { |
| 1346 | rach_slot_count = rslh->data[2] << 8 | rslh->data[3]; |
| 1347 | rach_busy_count = rslh->data[4] << 8 | rslh->data[5]; |
| 1348 | rach_access_count = rslh->data[6] << 8 | rslh->data[7]; |
| 1349 | } |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1350 | break; |
| 1351 | default: |
| 1352 | break; |
| 1353 | } |
| 1354 | |
| 1355 | return 0; |
| 1356 | } |
| 1357 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1358 | static int abis_rsl_rx_cchan(struct msgb *msg) |
| 1359 | { |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1360 | struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1361 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1362 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1363 | msg->lchan = lchan_lookup(msg->trx, rslh->chan_nr); |
| 1364 | |
| 1365 | switch (rslh->c.msg_type) { |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1366 | case RSL_MT_CHAN_RQD: |
| 1367 | /* MS has requested a channel on the RACH */ |
| 1368 | rc = rsl_rx_chan_rqd(msg); |
| 1369 | break; |
Harald Welte | ea28044 | 2009-02-02 22:29:56 +0000 | [diff] [blame] | 1370 | case RSL_MT_CCCH_LOAD_IND: |
| 1371 | /* current load on the CCCH */ |
| 1372 | rc = rsl_rx_ccch_load(msg); |
| 1373 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1374 | case RSL_MT_DELETE_IND: |
| 1375 | /* CCCH overloaded, IMM_ASSIGN was dropped */ |
| 1376 | case RSL_MT_CBCH_LOAD_IND: |
| 1377 | /* current load on the CBCH */ |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1378 | LOGP(DRSL, LOGL_NOTICE, "Unimplemented Abis RSL TRX message " |
| 1379 | "type 0x%02x\n", rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1380 | break; |
| 1381 | default: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1382 | LOGP(DRSL, LOGL_NOTICE, "Unknown Abis RSL TRX message type " |
| 1383 | "0x%02x\n", rslh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1384 | return -EINVAL; |
| 1385 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1386 | |
| 1387 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1388 | } |
| 1389 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1390 | static int rsl_rx_rll_err_ind(struct msgb *msg) |
| 1391 | { |
| 1392 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
| 1393 | u_int8_t *rlm_cause = rllh->data; |
| 1394 | |
Harald Welte (local) | 9538efc | 2009-12-26 23:55:00 +0100 | [diff] [blame] | 1395 | LOGP(DRLL, LOGL_ERROR, "%s ERROR INDICATION cause=%s\n", |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1396 | gsm_lchan_name(msg->lchan), |
Harald Welte | e95daf1 | 2010-03-25 12:13:02 +0800 | [diff] [blame] | 1397 | rsl_rlm_cause_name(rlm_cause[1])); |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1398 | |
| 1399 | 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] | 1400 | |
Holger Hans Peter Freyther | 3ba36d5 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1401 | if (rlm_cause[1] == RLL_CAUSE_T200_EXPIRED) { |
| 1402 | 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] | 1403 | return rsl_rf_chan_release(msg->lchan, 1); |
Holger Hans Peter Freyther | 3ba36d5 | 2010-04-17 06:48:29 +0200 | [diff] [blame] | 1404 | } |
Harald Welte | 81543bc | 2009-07-04 09:40:05 +0200 | [diff] [blame] | 1405 | |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1406 | return 0; |
| 1407 | } |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1408 | |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1409 | static void rsl_handle_release(struct gsm_lchan *lchan) |
| 1410 | { |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1411 | int sapi; |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1412 | struct gsm_bts *bts; |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1413 | |
| 1414 | /* maybe we have only brought down one RLL */ |
Holger Hans Peter Freyther | d7fd306 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1415 | if (lchan->state != LCHAN_S_REL_REQ) |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1416 | return; |
| 1417 | |
| 1418 | for (sapi = 0; sapi < ARRAY_SIZE(lchan->sapis); ++sapi) { |
| 1419 | if (lchan->sapis[sapi] == LCHAN_SAPI_UNUSED) |
| 1420 | continue; |
Harald Welte | 3a3c277 | 2010-12-24 12:51:07 +0100 | [diff] [blame] | 1421 | 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] | 1422 | gsm_lchan_name(lchan), sapi); |
| 1423 | return; |
| 1424 | } |
| 1425 | |
Holger Hans Peter Freyther | d7fd306 | 2010-04-08 22:47:44 +0200 | [diff] [blame] | 1426 | |
| 1427 | |
Holger Hans Peter Freyther | f30c0dc | 2010-05-31 21:33:15 +0800 | [diff] [blame] | 1428 | /* wait a bit to send the RF Channel Release */ |
| 1429 | lchan->T3111.cb = t3111_expired; |
| 1430 | lchan->T3111.data = lchan; |
| 1431 | bts = lchan->ts->trx->bts; |
| 1432 | bsc_schedule_timer(&lchan->T3111, bts->network->T3111, 0); |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1433 | } |
| 1434 | |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1435 | /* ESTABLISH INDICATION, LOCATION AREA UPDATE REQUEST |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1436 | 0x02, 0x06, |
| 1437 | 0x01, 0x20, |
| 1438 | 0x02, 0x00, |
| 1439 | 0x0b, 0x00, 0x0f, 0x05, 0x08, ... */ |
| 1440 | |
| 1441 | static int abis_rsl_rx_rll(struct msgb *msg) |
| 1442 | { |
| 1443 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1444 | int rc = 0; |
| 1445 | char *ts_name; |
Harald Welte (local) | daef606 | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1446 | u_int8_t sapi = rllh->link_id & 7; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1447 | |
| 1448 | msg->lchan = lchan_lookup(msg->trx, rllh->chan_nr); |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1449 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1450 | DEBUGP(DRLL, "%s SAPI=%u ", ts_name, sapi); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1451 | |
| 1452 | switch (rllh->c.msg_type) { |
| 1453 | case RSL_MT_DATA_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1454 | DEBUGPC(DRLL, "DATA INDICATION\n"); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1455 | if (msgb_l2len(msg) > |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1456 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1457 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1458 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | daef606 | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1459 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1460 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1461 | break; |
| 1462 | case RSL_MT_EST_IND: |
Harald Welte | f325eb4 | 2009-02-19 17:07:39 +0000 | [diff] [blame] | 1463 | DEBUGPC(DRLL, "ESTABLISH INDICATION\n"); |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1464 | /* lchan is established, stop T3101 */ |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1465 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_MS; |
Harald Welte | b7e8116 | 2009-08-10 00:26:10 +0200 | [diff] [blame] | 1466 | bsc_del_timer(&msg->lchan->T3101); |
Holger Hans Peter Freyther | acf8a0c | 2010-03-29 08:47:44 +0200 | [diff] [blame] | 1467 | if (msgb_l2len(msg) > |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1468 | sizeof(struct abis_rsl_common_hdr) + sizeof(*rllh) && |
| 1469 | rllh->data[0] == RSL_IE_L3_INFO) { |
| 1470 | msg->l3h = &rllh->data[3]; |
Harald Welte (local) | daef606 | 2009-08-14 11:41:12 +0200 | [diff] [blame] | 1471 | return gsm0408_rcvmsg(msg, rllh->link_id); |
Harald Welte | 4a543e8 | 2009-02-28 13:17:55 +0000 | [diff] [blame] | 1472 | } |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1473 | break; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1474 | case RSL_MT_EST_CONF: |
Harald Welte | 1c40927 | 2009-08-09 14:13:58 +0200 | [diff] [blame] | 1475 | DEBUGPC(DRLL, "ESTABLISH CONFIRM\n"); |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1476 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_NET; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1477 | rll_indication(msg->lchan, rllh->link_id, |
| 1478 | BSC_RLLR_IND_EST_CONF); |
| 1479 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1480 | case RSL_MT_REL_IND: |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1481 | /* BTS informs us of having received DISC from MS */ |
Harald Welte | 602f2b8 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1482 | DEBUGPC(DRLL, "RELEASE INDICATION\n"); |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1483 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Harald Welte | edcc527 | 2009-08-09 13:47:35 +0200 | [diff] [blame] | 1484 | rll_indication(msg->lchan, rllh->link_id, |
| 1485 | BSC_RLLR_IND_REL_IND); |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1486 | rsl_handle_release(msg->lchan); |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1487 | rsl_lchan_rll_release(msg->lchan, rllh->link_id); |
Harald Welte | 2d5b638 | 2008-12-27 19:46:06 +0000 | [diff] [blame] | 1488 | break; |
| 1489 | case RSL_MT_REL_CONF: |
Harald Welte | d2dc1de | 2009-08-08 13:15:07 +0200 | [diff] [blame] | 1490 | /* BTS informs us of having received UA from MS, |
| 1491 | * in response to DISC that we've sent earlier */ |
Harald Welte | 602f2b8 | 2009-08-04 02:50:21 +0200 | [diff] [blame] | 1492 | DEBUGPC(DRLL, "RELEASE CONFIRMATION\n"); |
Holger Hans Peter Freyther | 5ba6f48 | 2009-10-28 14:23:39 +0100 | [diff] [blame] | 1493 | msg->lchan->sapis[rllh->link_id & 0x7] = LCHAN_SAPI_UNUSED; |
Holger Hans Peter Freyther | dbc5fae | 2010-04-08 22:39:34 +0200 | [diff] [blame] | 1494 | rsl_handle_release(msg->lchan); |
Holger Hans Peter Freyther | 4b85a32 | 2010-07-29 17:09:36 +0800 | [diff] [blame] | 1495 | rsl_lchan_rll_release(msg->lchan, rllh->link_id); |
Harald Welte | 4b63454 | 2008-12-27 01:55:51 +0000 | [diff] [blame] | 1496 | break; |
| 1497 | case RSL_MT_ERROR_IND: |
| 1498 | rc = rsl_rx_rll_err_ind(msg); |
| 1499 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1500 | case RSL_MT_UNIT_DATA_IND: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1501 | LOGP(DRLL, LOGL_NOTICE, "unimplemented Abis RLL message " |
| 1502 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1503 | break; |
| 1504 | default: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1505 | LOGP(DRLL, LOGL_NOTICE, "unknown Abis RLL message " |
| 1506 | "type 0x%02x\n", rllh->c.msg_type); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1507 | } |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1508 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1509 | } |
| 1510 | |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1511 | static u_int8_t ipa_smod_s_for_lchan(struct gsm_lchan *lchan) |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1512 | { |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1513 | switch (lchan->tch_mode) { |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1514 | case GSM48_CMODE_SPEECH_V1: |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1515 | switch (lchan->type) { |
| 1516 | case GSM_LCHAN_TCH_F: |
| 1517 | return 0x00; |
| 1518 | case GSM_LCHAN_TCH_H: |
| 1519 | return 0x03; |
| 1520 | default: |
| 1521 | break; |
| 1522 | } |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1523 | case GSM48_CMODE_SPEECH_EFR: |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1524 | switch (lchan->type) { |
| 1525 | case GSM_LCHAN_TCH_F: |
| 1526 | return 0x01; |
| 1527 | /* there's no half-rate EFR */ |
| 1528 | default: |
| 1529 | break; |
| 1530 | } |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1531 | case GSM48_CMODE_SPEECH_AMR: |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1532 | switch (lchan->type) { |
| 1533 | case GSM_LCHAN_TCH_F: |
| 1534 | return 0x02; |
| 1535 | case GSM_LCHAN_TCH_H: |
| 1536 | return 0x05; |
| 1537 | default: |
| 1538 | break; |
| 1539 | } |
| 1540 | default: |
| 1541 | break; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1542 | } |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1543 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access speech mode for " |
Harald Welte | 0603c9d | 2009-12-02 01:58:23 +0530 | [diff] [blame] | 1544 | "tch_mode == 0x%02x\n", lchan->tch_mode); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1545 | return 0; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1546 | } |
| 1547 | |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1548 | static u_int8_t ipa_rtp_pt_for_lchan(struct gsm_lchan *lchan) |
| 1549 | { |
Holger Hans Peter Freyther | 8cc5903 | 2010-11-14 21:09:08 +0100 | [diff] [blame] | 1550 | struct gsm_network *net = lchan->ts->trx->bts->network; |
| 1551 | |
| 1552 | /* allow to hardcode the rtp payload */ |
| 1553 | if (net->hardcoded_rtp_payload != 0) |
| 1554 | return net->hardcoded_rtp_payload; |
| 1555 | |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1556 | switch (lchan->tch_mode) { |
| 1557 | case GSM48_CMODE_SPEECH_V1: |
| 1558 | switch (lchan->type) { |
| 1559 | case GSM_LCHAN_TCH_F: |
| 1560 | return RTP_PT_GSM_FULL; |
| 1561 | case GSM_LCHAN_TCH_H: |
| 1562 | return RTP_PT_GSM_HALF; |
| 1563 | default: |
| 1564 | break; |
| 1565 | } |
| 1566 | case GSM48_CMODE_SPEECH_EFR: |
| 1567 | switch (lchan->type) { |
| 1568 | case GSM_LCHAN_TCH_F: |
| 1569 | return RTP_PT_GSM_EFR; |
| 1570 | /* there's no half-rate EFR */ |
| 1571 | default: |
| 1572 | break; |
| 1573 | } |
| 1574 | case GSM48_CMODE_SPEECH_AMR: |
| 1575 | switch (lchan->type) { |
| 1576 | case GSM_LCHAN_TCH_F: |
| 1577 | return RTP_PT_AMR_FULL; |
| 1578 | case GSM_LCHAN_TCH_H: |
| 1579 | return RTP_PT_AMR_HALF; |
| 1580 | default: |
| 1581 | break; |
| 1582 | } |
| 1583 | default: |
| 1584 | break; |
| 1585 | } |
| 1586 | LOGP(DRSL, LOGL_ERROR, "Cannot determine ip.access rtp payload type for " |
| 1587 | "tch_mode == 0x%02x\n & lchan_type == %d", |
| 1588 | lchan->tch_mode, lchan->type); |
| 1589 | return 0; |
| 1590 | } |
| 1591 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1592 | /* ip.access specific RSL extensions */ |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1593 | static void ipac_parse_rtp(struct gsm_lchan *lchan, struct tlv_parsed *tv) |
| 1594 | { |
| 1595 | struct in_addr ip; |
| 1596 | u_int16_t port, conn_id; |
| 1597 | |
| 1598 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_IP)) { |
| 1599 | ip.s_addr = *((u_int32_t *) TLVP_VAL(tv, RSL_IE_IPAC_LOCAL_IP)); |
| 1600 | DEBUGPC(DRSL, "LOCAL_IP=%s ", inet_ntoa(ip)); |
| 1601 | lchan->abis_ip.bound_ip = ntohl(ip.s_addr); |
| 1602 | } |
| 1603 | |
| 1604 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_LOCAL_PORT)) { |
| 1605 | port = *((u_int16_t *) TLVP_VAL(tv, RSL_IE_IPAC_LOCAL_PORT)); |
| 1606 | port = ntohs(port); |
| 1607 | DEBUGPC(DRSL, "LOCAL_PORT=%u ", port); |
| 1608 | lchan->abis_ip.bound_port = port; |
| 1609 | } |
| 1610 | |
| 1611 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_CONN_ID)) { |
| 1612 | conn_id = *((u_int16_t *) TLVP_VAL(tv, RSL_IE_IPAC_CONN_ID)); |
| 1613 | conn_id = ntohs(conn_id); |
| 1614 | DEBUGPC(DRSL, "CON_ID=%u ", conn_id); |
| 1615 | lchan->abis_ip.conn_id = conn_id; |
| 1616 | } |
| 1617 | |
| 1618 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_RTP_PAYLOAD2)) { |
| 1619 | lchan->abis_ip.rtp_payload2 = |
| 1620 | *TLVP_VAL(tv, RSL_IE_IPAC_RTP_PAYLOAD2); |
| 1621 | DEBUGPC(DRSL, "RTP_PAYLOAD2=0x%02x ", |
| 1622 | lchan->abis_ip.rtp_payload2); |
| 1623 | } |
| 1624 | |
| 1625 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_SPEECH_MODE)) { |
| 1626 | lchan->abis_ip.speech_mode = |
| 1627 | *TLVP_VAL(tv, RSL_IE_IPAC_SPEECH_MODE); |
| 1628 | DEBUGPC(DRSL, "speech_mode=0x%02x ", |
| 1629 | lchan->abis_ip.speech_mode); |
| 1630 | } |
| 1631 | |
| 1632 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_IP)) { |
| 1633 | ip.s_addr = *((u_int32_t *) TLVP_VAL(tv, RSL_IE_IPAC_REMOTE_IP)); |
| 1634 | DEBUGPC(DRSL, "REMOTE_IP=%s ", inet_ntoa(ip)); |
| 1635 | lchan->abis_ip.connect_ip = ntohl(ip.s_addr); |
| 1636 | } |
| 1637 | |
| 1638 | if (TLVP_PRESENT(tv, RSL_IE_IPAC_REMOTE_PORT)) { |
| 1639 | port = *((u_int16_t *) TLVP_VAL(tv, RSL_IE_IPAC_REMOTE_PORT)); |
| 1640 | port = ntohs(port); |
| 1641 | DEBUGPC(DRSL, "REMOTE_PORT=%u ", port); |
| 1642 | lchan->abis_ip.connect_port = port; |
| 1643 | } |
| 1644 | } |
| 1645 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1646 | int rsl_ipacc_crcx(struct gsm_lchan *lchan) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1647 | { |
| 1648 | struct msgb *msg = rsl_msgb_alloc(); |
| 1649 | struct abis_rsl_dchan_hdr *dh; |
| 1650 | |
| 1651 | 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] | 1652 | init_dchan_hdr(dh, RSL_MT_IPAC_CRCX); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1653 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
| 1654 | dh->chan_nr = lchan2chan_nr(lchan); |
| 1655 | |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1656 | /* 0x1- == receive-only, 0x-1 == EFR codec */ |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1657 | lchan->abis_ip.speech_mode = 0x10 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1658 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1659 | 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] | 1660 | 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] | 1661 | |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1662 | DEBUGP(DRSL, "%s IPAC_BIND speech_mode=0x%02x RTP_PAYLOAD=%d\n", |
| 1663 | gsm_lchan_name(lchan), lchan->abis_ip.speech_mode, |
| 1664 | lchan->abis_ip.rtp_payload); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1665 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1666 | msg->trx = lchan->ts->trx; |
| 1667 | |
| 1668 | return abis_rsl_sendmsg(msg); |
| 1669 | } |
| 1670 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1671 | int rsl_ipacc_mdcx(struct gsm_lchan *lchan, u_int32_t ip, u_int16_t port, |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1672 | u_int8_t rtp_payload2) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1673 | { |
| 1674 | struct msgb *msg = rsl_msgb_alloc(); |
| 1675 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1676 | u_int32_t *att_ip; |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1677 | struct in_addr ia; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1678 | |
| 1679 | 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] | 1680 | init_dchan_hdr(dh, RSL_MT_IPAC_MDCX); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1681 | dh->c.msg_discr = ABIS_RSL_MDISC_IPACCESS; |
| 1682 | dh->chan_nr = lchan2chan_nr(lchan); |
| 1683 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1684 | /* we need to store these now as MDCX_ACK does not return them :( */ |
| 1685 | lchan->abis_ip.rtp_payload2 = rtp_payload2; |
| 1686 | lchan->abis_ip.connect_port = port; |
| 1687 | lchan->abis_ip.connect_ip = ip; |
| 1688 | |
Harald Welte | 58ca5b7 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 1689 | /* 0x0- == both directions, 0x-1 == EFR codec */ |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1690 | lchan->abis_ip.speech_mode = 0x00 | ipa_smod_s_for_lchan(lchan); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1691 | lchan->abis_ip.rtp_payload = ipa_rtp_pt_for_lchan(lchan); |
Harald Welte | 58ca5b7 | 2009-07-29 12:12:18 +0200 | [diff] [blame] | 1692 | |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1693 | ia.s_addr = htonl(ip); |
Sylvain Munaut | b54dda4 | 2009-12-20 22:06:40 +0100 | [diff] [blame] | 1694 | DEBUGP(DRSL, "%s IPAC_MDCX IP=%s PORT=%d RTP_PAYLOAD=%d RTP_PAYLOAD2=%d " |
| 1695 | "CONN_ID=%d speech_mode=0x%02x\n", gsm_lchan_name(lchan), |
| 1696 | inet_ntoa(ia), port, lchan->abis_ip.rtp_payload, rtp_payload2, |
| 1697 | lchan->abis_ip.conn_id, lchan->abis_ip.speech_mode); |
Harald Welte | f4e79f2 | 2009-07-28 18:11:56 +0200 | [diff] [blame] | 1698 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1699 | msgb_tv16_put(msg, RSL_IE_IPAC_CONN_ID, lchan->abis_ip.conn_id); |
| 1700 | msgb_v_put(msg, RSL_IE_IPAC_REMOTE_IP); |
| 1701 | att_ip = (u_int32_t *) msgb_put(msg, sizeof(ip)); |
| 1702 | *att_ip = ia.s_addr; |
| 1703 | msgb_tv16_put(msg, RSL_IE_IPAC_REMOTE_PORT, port); |
| 1704 | 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] | 1705 | 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] | 1706 | if (rtp_payload2) |
| 1707 | msgb_tv_put(msg, RSL_IE_IPAC_RTP_PAYLOAD2, rtp_payload2); |
| 1708 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1709 | msg->trx = lchan->ts->trx; |
| 1710 | |
| 1711 | return abis_rsl_sendmsg(msg); |
| 1712 | } |
| 1713 | |
Harald Welte | a72273e | 2009-12-20 16:51:09 +0100 | [diff] [blame] | 1714 | /* tell BTS to connect RTP stream to our local RTP socket */ |
| 1715 | int rsl_ipacc_mdcx_to_rtpsock(struct gsm_lchan *lchan) |
| 1716 | { |
| 1717 | struct rtp_socket *rs = lchan->abis_ip.rtp_socket; |
| 1718 | int rc; |
| 1719 | |
| 1720 | rc = rsl_ipacc_mdcx(lchan, ntohl(rs->rtp.sin_local.sin_addr.s_addr), |
| 1721 | ntohs(rs->rtp.sin_local.sin_port), |
| 1722 | /* FIXME: use RTP payload of bound socket, not BTS*/ |
| 1723 | lchan->abis_ip.rtp_payload2); |
| 1724 | |
| 1725 | return rc; |
| 1726 | } |
| 1727 | |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 1728 | 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] | 1729 | { |
| 1730 | struct msgb *msg = rsl_msgb_alloc(); |
| 1731 | struct abis_rsl_dchan_hdr *dh; |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1732 | u_int8_t msg_type; |
| 1733 | |
| 1734 | if (act) |
| 1735 | msg_type = RSL_MT_IPAC_PDCH_ACT; |
| 1736 | else |
| 1737 | msg_type = RSL_MT_IPAC_PDCH_DEACT; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1738 | |
| 1739 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(msg, sizeof(*dh)); |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1740 | init_dchan_hdr(dh, msg_type); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1741 | dh->c.msg_discr = ABIS_RSL_MDISC_DED_CHAN; |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 1742 | dh->chan_nr = ts2chan_nr(ts, 0); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1743 | |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 1744 | DEBUGP(DRSL, "%s IPAC_PDCH_%sACT\n", gsm_ts_name(ts), |
Harald Welte | 4563eab | 2010-03-28 14:42:09 +0800 | [diff] [blame] | 1745 | act ? "" : "DE"); |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1746 | |
Harald Welte | 53cd7ac | 2010-12-23 12:59:52 +0100 | [diff] [blame] | 1747 | msg->trx = ts->trx; |
Harald Welte | 9c880c9 | 2009-10-24 10:29:22 +0200 | [diff] [blame] | 1748 | |
| 1749 | return abis_rsl_sendmsg(msg); |
| 1750 | } |
| 1751 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1752 | static int abis_rsl_rx_ipacc_crcx_ack(struct msgb *msg) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1753 | { |
| 1754 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1755 | struct tlv_parsed tv; |
Harald Welte | 2c82899 | 2009-12-02 01:56:49 +0530 | [diff] [blame] | 1756 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1757 | |
| 1758 | /* the BTS has acknowledged a local bind, it now tells us the IP |
| 1759 | * address and port number to which it has bound the given logical |
| 1760 | * channel */ |
| 1761 | |
| 1762 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1763 | if (!TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_PORT) || |
| 1764 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_LOCAL_IP) || |
Harald Welte | 86c162d | 2009-07-12 09:45:05 +0200 | [diff] [blame] | 1765 | !TLVP_PRESENT(&tv, RSL_IE_IPAC_CONN_ID)) { |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1766 | LOGP(DRSL, LOGL_NOTICE, "mandatory IE missing"); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1767 | return -EINVAL; |
| 1768 | } |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1769 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1770 | ipac_parse_rtp(lchan, &tv); |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1771 | |
| 1772 | /* in case we don't use direct BTS-to-BTS RTP */ |
| 1773 | if (!ipacc_rtp_direct) { |
| 1774 | int rc; |
| 1775 | /* the BTS has successfully bound a TCH to a local ip/port, |
| 1776 | * which means we can connect our UDP socket to it */ |
| 1777 | if (lchan->abis_ip.rtp_socket) { |
| 1778 | rtp_socket_free(lchan->abis_ip.rtp_socket); |
| 1779 | lchan->abis_ip.rtp_socket = NULL; |
| 1780 | } |
| 1781 | |
| 1782 | lchan->abis_ip.rtp_socket = rtp_socket_create(); |
| 1783 | if (!lchan->abis_ip.rtp_socket) |
| 1784 | goto out_err; |
| 1785 | |
| 1786 | rc = rtp_socket_connect(lchan->abis_ip.rtp_socket, |
| 1787 | lchan->abis_ip.bound_ip, |
| 1788 | lchan->abis_ip.bound_port); |
| 1789 | if (rc < 0) |
| 1790 | goto out_err; |
| 1791 | } |
| 1792 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1793 | dispatch_signal(SS_ABISIP, S_ABISIP_CRCX_ACK, msg->lchan); |
Harald Welte | 167df88 | 2009-02-17 14:35:45 +0000 | [diff] [blame] | 1794 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1795 | return 0; |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1796 | out_err: |
| 1797 | return -EIO; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1798 | } |
| 1799 | |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1800 | static int abis_rsl_rx_ipacc_mdcx_ack(struct msgb *msg) |
| 1801 | { |
| 1802 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1803 | struct tlv_parsed tv; |
| 1804 | struct gsm_lchan *lchan = msg->lchan; |
| 1805 | |
| 1806 | /* the BTS has acknowledged a remote connect request and |
| 1807 | * it now tells us the IP address and port number to which it has |
| 1808 | * connected the given logical channel */ |
| 1809 | |
| 1810 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
| 1811 | ipac_parse_rtp(lchan, &tv); |
| 1812 | dispatch_signal(SS_ABISIP, S_ABISIP_MDCX_ACK, msg->lchan); |
| 1813 | |
| 1814 | return 0; |
| 1815 | } |
| 1816 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1817 | static int abis_rsl_rx_ipacc_dlcx_ind(struct msgb *msg) |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1818 | { |
| 1819 | struct abis_rsl_dchan_hdr *dh = msgb_l2(msg); |
| 1820 | struct tlv_parsed tv; |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1821 | struct gsm_lchan *lchan = msg->lchan; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1822 | |
| 1823 | rsl_tlv_parse(&tv, dh->data, msgb_l2len(msg)-sizeof(*dh)); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1824 | |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1825 | if (TLVP_PRESENT(&tv, RSL_IE_CAUSE)) |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1826 | print_rsl_cause(LOGL_DEBUG, TLVP_VAL(&tv, RSL_IE_CAUSE), |
Harald Welte | 8830e07 | 2009-07-28 17:58:09 +0200 | [diff] [blame] | 1827 | TLVP_LEN(&tv, RSL_IE_CAUSE)); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1828 | |
Harald Welte | 17f5bf6 | 2009-12-20 15:42:44 +0100 | [diff] [blame] | 1829 | /* the BTS tells us a RTP stream has been disconnected */ |
| 1830 | if (lchan->abis_ip.rtp_socket) { |
| 1831 | rtp_socket_free(lchan->abis_ip.rtp_socket); |
| 1832 | lchan->abis_ip.rtp_socket = NULL; |
| 1833 | } |
| 1834 | |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1835 | dispatch_signal(SS_ABISIP, S_ABISIP_DLCX_IND, msg->lchan); |
Harald Welte | 888b114 | 2009-07-28 18:02:05 +0200 | [diff] [blame] | 1836 | |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1837 | return 0; |
| 1838 | } |
| 1839 | |
| 1840 | static int abis_rsl_rx_ipacc(struct msgb *msg) |
| 1841 | { |
| 1842 | struct abis_rsl_rll_hdr *rllh = msgb_l2(msg); |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1843 | char *ts_name; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1844 | int rc = 0; |
| 1845 | |
| 1846 | msg->lchan = lchan_lookup(msg->trx, rllh->chan_nr); |
Harald Welte (local) | 19ef62a | 2009-12-27 18:16:36 +0100 | [diff] [blame] | 1847 | ts_name = gsm_lchan_name(msg->lchan); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1848 | |
| 1849 | switch (rllh->c.msg_type) { |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1850 | case RSL_MT_IPAC_CRCX_ACK: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1851 | DEBUGP(DRSL, "%s IPAC_CRCX_ACK ", ts_name); |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1852 | rc = abis_rsl_rx_ipacc_crcx_ack(msg); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1853 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1854 | case RSL_MT_IPAC_CRCX_NACK: |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1855 | /* somehow the BTS was unable to bind the lchan to its local |
| 1856 | * port?!? */ |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1857 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_CRCX_NACK\n", ts_name); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1858 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1859 | case RSL_MT_IPAC_MDCX_ACK: |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1860 | /* the BTS tells us that a connect operation was successful */ |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1861 | DEBUGP(DRSL, "%s IPAC_MDCX_ACK ", ts_name); |
Harald Welte | 5e3d91b | 2009-12-19 16:42:06 +0100 | [diff] [blame] | 1862 | rc = abis_rsl_rx_ipacc_mdcx_ack(msg); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1863 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1864 | case RSL_MT_IPAC_MDCX_NACK: |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1865 | /* somehow the BTS was unable to connect the lchan to a remote |
| 1866 | * port */ |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1867 | LOGP(DRSL, LOGL_ERROR, "%s IPAC_MDCX_NACK\n", ts_name); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1868 | break; |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1869 | case RSL_MT_IPAC_DLCX_IND: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1870 | DEBUGP(DRSL, "%s IPAC_DLCX_IND ", ts_name); |
Holger Hans Peter Freyther | 231163d | 2009-11-18 21:06:12 +0100 | [diff] [blame] | 1871 | rc = abis_rsl_rx_ipacc_dlcx_ind(msg); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1872 | break; |
| 1873 | default: |
Harald Welte | 5b8ed43 | 2009-12-24 12:20:20 +0100 | [diff] [blame] | 1874 | LOGP(DRSL, LOGL_NOTICE, "Unknown ip.access msg_type 0x%02x\n", |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1875 | rllh->c.msg_type); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1876 | break; |
| 1877 | } |
Harald Welte | 6dab055 | 2009-05-01 17:21:37 +0000 | [diff] [blame] | 1878 | DEBUGPC(DRSL, "\n"); |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1879 | |
| 1880 | return rc; |
| 1881 | } |
| 1882 | |
| 1883 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1884 | /* Entry-point where L2 RSL from BTS enters */ |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1885 | int abis_rsl_rcvmsg(struct msgb *msg) |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1886 | { |
Holger Hans Peter Freyther | 19bab73 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 1887 | struct abis_rsl_common_hdr *rslh; |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 1888 | int rc = 0; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1889 | |
Holger Hans Peter Freyther | 19bab73 | 2009-11-20 15:14:01 +0100 | [diff] [blame] | 1890 | if (!msg) { |
| 1891 | DEBUGP(DRSL, "Empty RSL msg?..\n"); |
| 1892 | return -1; |
| 1893 | } |
| 1894 | |
| 1895 | if (msgb_l2len(msg) < sizeof(*rslh)) { |
| 1896 | DEBUGP(DRSL, "Truncated RSL message with l2len: %u\n", msgb_l2len(msg)); |
| 1897 | return -1; |
| 1898 | } |
| 1899 | |
| 1900 | rslh = msgb_l2(msg); |
| 1901 | |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1902 | switch (rslh->msg_discr & 0xfe) { |
| 1903 | case ABIS_RSL_MDISC_RLL: |
| 1904 | rc = abis_rsl_rx_rll(msg); |
| 1905 | break; |
| 1906 | case ABIS_RSL_MDISC_DED_CHAN: |
| 1907 | rc = abis_rsl_rx_dchan(msg); |
| 1908 | break; |
| 1909 | case ABIS_RSL_MDISC_COM_CHAN: |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1910 | rc = abis_rsl_rx_cchan(msg); |
| 1911 | break; |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1912 | case ABIS_RSL_MDISC_TRX: |
| 1913 | rc = abis_rsl_rx_trx(msg); |
| 1914 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1915 | case ABIS_RSL_MDISC_LOC: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1916 | LOGP(DRSL, LOGL_NOTICE, "unimplemented RSL msg disc 0x%02x\n", |
Harald Welte | 8f5e239 | 2009-02-03 12:57:37 +0000 | [diff] [blame] | 1917 | rslh->msg_discr); |
| 1918 | break; |
Harald Welte | 7509926 | 2009-02-16 21:12:08 +0000 | [diff] [blame] | 1919 | case ABIS_RSL_MDISC_IPACCESS: |
| 1920 | rc = abis_rsl_rx_ipacc(msg); |
| 1921 | break; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1922 | default: |
Harald Welte | b1d4c8e | 2009-12-17 23:10:46 +0100 | [diff] [blame] | 1923 | LOGP(DRSL, LOGL_NOTICE, "unknown RSL message discriminator " |
| 1924 | "0x%02x\n", rslh->msg_discr); |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1925 | return -EINVAL; |
| 1926 | } |
Harald Welte | 4f4a390 | 2008-12-26 00:04:49 +0000 | [diff] [blame] | 1927 | msgb_free(msg); |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 1928 | return rc; |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 1929 | } |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 1930 | |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 1931 | /* From Table 10.5.33 of GSM 04.08 */ |
| 1932 | int rsl_number_of_paging_subchannels(struct gsm_bts *bts) |
| 1933 | { |
Harald Welte | a43f789 | 2009-12-01 18:04:30 +0530 | [diff] [blame] | 1934 | if (bts->si_common.chan_desc.ccch_conf == RSL_BCCH_CCCH_CONF_1_C) { |
| 1935 | return MAX(1, (3 - bts->si_common.chan_desc.bs_ag_blks_res)) |
| 1936 | * (bts->si_common.chan_desc.bs_pa_mfrms + 2); |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 1937 | } else { |
Harald Welte | a43f789 | 2009-12-01 18:04:30 +0530 | [diff] [blame] | 1938 | return (9 - bts->si_common.chan_desc.bs_ag_blks_res) |
| 1939 | * (bts->si_common.chan_desc.bs_pa_mfrms + 2); |
Holger Freyther | 3b72a89 | 2009-02-04 00:31:39 +0000 | [diff] [blame] | 1940 | } |
| 1941 | } |
Holger Hans Peter Freyther | 8cb4a0f | 2010-07-21 15:54:32 +0800 | [diff] [blame] | 1942 | |
| 1943 | int rsl_sms_cb_command(struct gsm_bts *bts, uint8_t chan_number, |
| 1944 | uint8_t cb_command, const uint8_t *data, int len) |
| 1945 | { |
| 1946 | struct abis_rsl_dchan_hdr *dh; |
| 1947 | struct msgb *cb_cmd; |
| 1948 | |
| 1949 | cb_cmd = rsl_msgb_alloc(); |
| 1950 | if (!cb_cmd) |
| 1951 | return -1; |
| 1952 | |
| 1953 | dh = (struct abis_rsl_dchan_hdr *) msgb_put(cb_cmd, sizeof*dh); |
| 1954 | init_dchan_hdr(dh, RSL_MT_SMS_BC_CMD); |
| 1955 | dh->chan_nr = RSL_CHAN_SDCCH4_ACCH; /* TODO: check the chan config */ |
| 1956 | |
| 1957 | msgb_tv_put(cb_cmd, RSL_IE_CB_CMD_TYPE, cb_command); |
| 1958 | msgb_tlv_put(cb_cmd, RSL_IE_SMSCB_MSG, len, data); |
| 1959 | |
| 1960 | cb_cmd->trx = bts->c0; |
| 1961 | |
| 1962 | return abis_rsl_sendmsg(cb_cmd); |
| 1963 | } |