Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1 | /* gprs_rlcmac.cpp |
| 2 | * |
| 3 | * Copyright (C) 2012 Ivan Klyuchnikov |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 4 | * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu> |
Holger Hans Peter Freyther | d6bd91e | 2013-08-24 21:16:55 +0200 | [diff] [blame] | 5 | * Copyright (C) 2013 by Holger Hans Peter Freyther |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version 2 |
| 10 | * of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 20 | */ |
| 21 | |
| 22 | #include <gprs_bssgp_pcu.h> |
| 23 | #include <pcu_l1_if.h> |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 24 | #include <gprs_rlcmac.h> |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame] | 25 | #include <tbf.h> |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 26 | |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 27 | /* 3GPP TS 05.02 Annex B.1 */ |
| 28 | |
| 29 | #define MS_NA 255 /* N/A */ |
| 30 | #define MS_A 254 /* 1 with hopping, 0 without */ |
| 31 | #define MS_B 253 /* 1 with hopping, 0 without (change Rx to Tx)*/ |
| 32 | #define MS_C 252 /* 1 with hopping, 0 without (change Tx to Rx)*/ |
| 33 | |
| 34 | struct gprs_ms_multislot_class { |
| 35 | uint8_t rx, tx, sum; /* Maximum Number of Slots: RX, Tx, Sum Rx+Tx */ |
| 36 | uint8_t ta, tb, ra, rb; /* Minimum Number of Slots */ |
| 37 | uint8_t type; /* Type of Mobile */ |
| 38 | }; |
| 39 | |
Holger Hans Peter Freyther | 2023bd1 | 2013-08-24 22:27:52 +0200 | [diff] [blame] | 40 | static const struct gprs_ms_multislot_class gprs_ms_multislot_class[32] = { |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 41 | /* M-S Class Rx Tx Sum Tta Ttb Tra Trb Type */ |
| 42 | /* N/A */ { MS_NA,MS_NA, MS_NA, MS_NA, MS_NA, MS_NA, MS_NA, MS_NA }, |
| 43 | /* 1 */ { 1, 1, 2, 3, 2, 4, 2, 1 }, |
| 44 | /* 2 */ { 2, 1, 3, 3, 2, 3, 1, 1 }, |
| 45 | /* 3 */ { 2, 2, 3, 3, 2, 3, 1, 1 }, |
| 46 | /* 4 */ { 3, 1, 4, 3, 1, 3, 1, 1 }, |
| 47 | /* 5 */ { 2, 2, 4, 3, 1, 3, 1, 1 }, |
| 48 | /* 6 */ { 3, 2, 4, 3, 1, 3, 1, 1 }, |
| 49 | /* 7 */ { 3, 3, 4, 3, 1, 3, 1, 1 }, |
| 50 | /* 8 */ { 4, 1, 5, 3, 1, 2, 1, 1 }, |
| 51 | /* 9 */ { 3, 2, 5, 3, 1, 2, 1, 1 }, |
| 52 | /* 10 */ { 4, 2, 5, 3, 1, 2, 1, 1 }, |
| 53 | /* 11 */ { 4, 3, 5, 3, 1, 2, 1, 1 }, |
| 54 | /* 12 */ { 4, 4, 5, 2, 1, 2, 1, 1 }, |
| 55 | /* 13 */ { 3, 3, MS_NA, MS_NA, MS_A, 3, MS_A, 2 }, |
| 56 | /* 14 */ { 4, 4, MS_NA, MS_NA, MS_A, 3, MS_A, 2 }, |
| 57 | /* 15 */ { 5, 5, MS_NA, MS_NA, MS_A, 3, MS_A, 2 }, |
| 58 | /* 16 */ { 6, 6, MS_NA, MS_NA, MS_A, 2, MS_A, 2 }, |
| 59 | /* 17 */ { 7, 7, MS_NA, MS_NA, MS_A, 1, 0, 2 }, |
| 60 | /* 18 */ { 8, 8, MS_NA, MS_NA, 0, 0, 0, 2 }, |
| 61 | /* 19 */ { 6, 2, MS_NA, 3, MS_B, 2, MS_C, 1 }, |
| 62 | /* 20 */ { 6, 3, MS_NA, 3, MS_B, 2, MS_C, 1 }, |
| 63 | /* 21 */ { 6, 4, MS_NA, 3, MS_B, 2, MS_C, 1 }, |
| 64 | /* 22 */ { 6, 4, MS_NA, 2, MS_B, 2, MS_C, 1 }, |
| 65 | /* 23 */ { 6, 6, MS_NA, 2, MS_B, 2, MS_C, 1 }, |
| 66 | /* 24 */ { 8, 2, MS_NA, 3, MS_B, 2, MS_C, 1 }, |
| 67 | /* 25 */ { 8, 3, MS_NA, 3, MS_B, 2, MS_C, 1 }, |
| 68 | /* 26 */ { 8, 4, MS_NA, 3, MS_B, 2, MS_C, 1 }, |
| 69 | /* 27 */ { 8, 4, MS_NA, 2, MS_B, 2, MS_C, 1 }, |
| 70 | /* 28 */ { 8, 6, MS_NA, 2, MS_B, 2, MS_C, 1 }, |
| 71 | /* 29 */ { 8, 8, MS_NA, 2, MS_B, 2, MS_C, 1 }, |
| 72 | /* N/A */ { MS_NA,MS_NA, MS_NA, MS_NA, MS_NA, MS_NA, MS_NA, MS_NA }, |
| 73 | /* N/A */ { MS_NA,MS_NA, MS_NA, MS_NA, MS_NA, MS_NA, MS_NA, MS_NA }, |
| 74 | }; |
| 75 | |
Andreas Eversberg | 3b1332c | 2012-10-03 14:20:53 +0200 | [diff] [blame] | 76 | struct gprs_rlcmac_cs gprs_rlcmac_cs[] = { |
| 77 | /* frame length data block max payload */ |
| 78 | { 0, 0, 0 }, |
| 79 | { 23, 23, 20 }, /* CS-1 */ |
| 80 | { 34, 33, 30 }, /* CS-2 */ |
| 81 | { 40, 39, 36 }, /* CS-3 */ |
| 82 | { 54, 53, 50 }, /* CS-4 */ |
| 83 | }; |
| 84 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 85 | LLIST_HEAD(gprs_rlcmac_ul_tbfs); |
| 86 | LLIST_HEAD(gprs_rlcmac_dl_tbfs); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 87 | llist_head *gprs_rlcmac_tbfs_lists[] = { |
| 88 | &gprs_rlcmac_ul_tbfs, |
| 89 | &gprs_rlcmac_dl_tbfs, |
| 90 | NULL |
| 91 | }; |
Andreas Eversberg | 6681bb8 | 2012-07-25 08:48:44 +0200 | [diff] [blame] | 92 | extern void *tall_pcu_ctx; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 93 | |
Andreas Eversberg | b83e2a7 | 2012-10-07 15:26:00 +0200 | [diff] [blame] | 94 | #ifdef DEBUG_DIAGRAM |
| 95 | struct timeval diagram_time = {0,0}; |
| 96 | struct timeval diagram_last_tv = {0,0}; |
| 97 | |
| 98 | void debug_diagram(int diag, const char *format, ...) |
| 99 | { |
| 100 | va_list ap; |
| 101 | char debug[128]; |
| 102 | char line[1024]; |
| 103 | struct gprs_rlcmac_tbf *tbf, *tbf_a[16]; |
| 104 | int max_diag = -1, i; |
| 105 | uint64_t diff = 0; |
| 106 | |
| 107 | va_start(ap, format); |
| 108 | vsnprintf(debug, sizeof(debug) - 1, format, ap); |
| 109 | debug[19] = ' '; |
| 110 | debug[20] = '\0'; |
| 111 | va_end(ap); |
| 112 | |
| 113 | memset(tbf_a, 0, sizeof(tbf_a)); |
| 114 | llist_for_each_entry(tbf, &gprs_rlcmac_ul_tbfs, list) { |
| 115 | if (tbf->diag < 16) { |
| 116 | if (tbf->diag > max_diag) |
| 117 | max_diag = tbf->diag; |
| 118 | tbf_a[tbf->diag] = tbf; |
| 119 | } |
| 120 | } |
| 121 | llist_for_each_entry(tbf, &gprs_rlcmac_dl_tbfs, list) { |
| 122 | if (tbf->diag < 16) { |
| 123 | if (tbf->diag > max_diag) |
| 124 | max_diag = tbf->diag; |
| 125 | tbf_a[tbf->diag] = tbf; |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | if (diagram_last_tv.tv_sec) { |
| 130 | diff = (uint64_t)(diagram_time.tv_sec - |
| 131 | diagram_last_tv.tv_sec) * 1000; |
| 132 | diff += diagram_time.tv_usec / 1000; |
| 133 | diff -= diagram_last_tv.tv_usec / 1000; |
| 134 | } |
| 135 | memcpy(&diagram_last_tv, &diagram_time, sizeof(struct timeval)); |
| 136 | |
| 137 | if (diff > 0) { |
| 138 | if (diff > 99999) |
| 139 | strcpy(line, " ... : "); |
| 140 | else |
| 141 | sprintf(line, "%3d.%03d: ", (int)(diff / 1000), |
| 142 | (int)(diff % 1000)); |
| 143 | for (i = 0; i <= max_diag; i++) { |
| 144 | if (tbf_a[i] == NULL) { |
| 145 | strcat(line, " "); |
| 146 | continue; |
| 147 | } |
| 148 | if (tbf_a[i]->diag_new) { |
| 149 | strcat(line, " | "); |
| 150 | continue; |
| 151 | } |
| 152 | strcat(line, " "); |
| 153 | } |
| 154 | puts(line); |
| 155 | } |
| 156 | strcpy(line, " : "); |
| 157 | for (i = 0; i <= max_diag; i++) { |
| 158 | if (tbf_a[i] == NULL) { |
| 159 | strcat(line, " "); |
| 160 | continue; |
| 161 | } |
| 162 | if (tbf_a[i]->diag != diag) { |
| 163 | strcat(line, " | "); |
| 164 | continue; |
| 165 | } |
| 166 | if (strlen(debug) < 19) { |
| 167 | strcat(line, " "); |
| 168 | memcpy(line + strlen(line) - 11 - strlen(debug) / 2, |
| 169 | debug, strlen(debug)); |
| 170 | } else |
| 171 | strcat(line, debug); |
| 172 | tbf_a[i]->diag_new = 1; |
| 173 | } |
| 174 | puts(line); |
| 175 | } |
| 176 | #endif |
| 177 | |
Holger Hans Peter Freyther | 483f77a | 2013-10-16 16:33:00 +0200 | [diff] [blame] | 178 | /* FIXME: spread resources over multiple TRX. Also add option to use same |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 179 | * TRX in case of existing TBF for TLLI in the other direction. */ |
Andreas Eversberg | 02d7cd2 | 2013-01-15 08:59:34 +0100 | [diff] [blame] | 180 | /* search for free TFI and return TFI, TRX */ |
Holger Hans Peter Freyther | d6bd91e | 2013-08-24 21:16:55 +0200 | [diff] [blame] | 181 | int tfi_find_free(struct gprs_rlcmac_bts *bts, enum gprs_rlcmac_tbf_direction dir, |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 182 | uint8_t *_trx, int8_t use_trx) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 183 | { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 184 | struct gprs_rlcmac_pdch *pdch; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 185 | struct gprs_rlcmac_tbf **tbfp; |
| 186 | uint8_t trx_from, trx_to, trx, ts, tfi; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 187 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 188 | if (use_trx >= 0 && use_trx < 8) |
| 189 | trx_from = trx_to = use_trx; |
| 190 | else { |
| 191 | trx_from = 0; |
| 192 | trx_to = 7; |
| 193 | } |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 194 | |
| 195 | /* on TRX find first enabled TS */ |
| 196 | for (trx = trx_from; trx <= trx_to; trx++) { |
Andreas Eversberg | 02d7cd2 | 2013-01-15 08:59:34 +0100 | [diff] [blame] | 197 | for (ts = 0; ts < 8; ts++) { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 198 | pdch = &bts->trx[trx].pdch[ts]; |
| 199 | if (!pdch->enable) |
| 200 | continue; |
| 201 | break; |
| 202 | } |
| 203 | if (ts < 8) |
| 204 | break; |
| 205 | } |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 206 | if (trx > trx_to) { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 207 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH available.\n"); |
| 208 | return -EINVAL; |
| 209 | } |
| 210 | |
| 211 | |
| 212 | LOGP(DRLCMAC, LOGL_DEBUG, "Searching for first unallocated TFI: " |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 213 | "TRX=%d first TS=%d\n", trx, ts); |
| 214 | if (dir == GPRS_RLCMAC_UL_TBF) |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 215 | tbfp = bts->trx[trx].ul_tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 216 | else |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 217 | tbfp = bts->trx[trx].dl_tbf; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 218 | for (tfi = 0; tfi < 32; tfi++) { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 219 | if (!tbfp[tfi]) |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 220 | break; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 221 | } |
| 222 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 223 | if (tfi < 32) { |
| 224 | LOGP(DRLCMAC, LOGL_DEBUG, " Found TFI=%d.\n", tfi); |
| 225 | *_trx = trx; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 226 | return tfi; |
| 227 | } |
| 228 | LOGP(DRLCMAC, LOGL_NOTICE, "No TFI available.\n"); |
| 229 | |
| 230 | return -1; |
| 231 | } |
| 232 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 233 | static inline int8_t find_free_usf(struct gprs_rlcmac_pdch *pdch, uint8_t ts) |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 234 | { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 235 | struct gprs_rlcmac_tbf *tbf; |
| 236 | uint8_t usf_map = 0; |
| 237 | uint8_t tfi, usf; |
| 238 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 239 | /* make map of used USF */ |
| 240 | for (tfi = 0; tfi < 32; tfi++) { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 241 | tbf = pdch->ul_tbf[tfi]; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 242 | if (!tbf) |
| 243 | continue; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 244 | usf_map |= (1 << tbf->dir.ul.usf[ts]); |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 245 | } |
| 246 | |
| 247 | /* look for USF, don't use USF=7 */ |
| 248 | for (usf = 0; usf < 7; usf++) { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 249 | if (!(usf_map & (1 << usf))) |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 250 | return usf; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 251 | } |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 252 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 253 | return -1; |
| 254 | } |
| 255 | |
| 256 | /* lookup TBF Entity (by TFI) */ |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 257 | struct gprs_rlcmac_tbf *tbf_by_tfi(struct gprs_rlcmac_bts *bts, |
| 258 | uint8_t tfi, uint8_t trx, enum gprs_rlcmac_tbf_direction dir) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 259 | { |
| 260 | struct gprs_rlcmac_tbf *tbf; |
| 261 | |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 262 | if (tfi >= 32 || trx >= 8) |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 263 | return NULL; |
| 264 | |
| 265 | if (dir == GPRS_RLCMAC_UL_TBF) |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 266 | tbf = bts->trx[trx].ul_tbf[tfi]; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 267 | else |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 268 | tbf = bts->trx[trx].dl_tbf[tfi]; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 269 | if (!tbf) |
| 270 | return NULL; |
| 271 | |
| 272 | if (tbf->state != GPRS_RLCMAC_RELEASING) |
Holger Hans Peter Freyther | 9858060 | 2013-09-30 15:31:56 +0200 | [diff] [blame] | 273 | return tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 274 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 275 | return NULL; |
| 276 | } |
| 277 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 278 | /* search for active downlink or uplink tbf */ |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 279 | struct gprs_rlcmac_tbf *tbf_by_tlli(uint32_t tlli, |
| 280 | enum gprs_rlcmac_tbf_direction dir) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 281 | { |
| 282 | struct gprs_rlcmac_tbf *tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 283 | if (dir == GPRS_RLCMAC_UL_TBF) { |
| 284 | llist_for_each_entry(tbf, &gprs_rlcmac_ul_tbfs, list) { |
| 285 | if (tbf->state != GPRS_RLCMAC_RELEASING |
Andreas Eversberg | a9b9407 | 2012-07-15 19:30:41 +0200 | [diff] [blame] | 286 | && tbf->tlli == tlli && tbf->tlli_valid) |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 287 | return tbf; |
| 288 | } |
| 289 | } else { |
| 290 | llist_for_each_entry(tbf, &gprs_rlcmac_dl_tbfs, list) { |
| 291 | if (tbf->state != GPRS_RLCMAC_RELEASING |
| 292 | && tbf->tlli == tlli) |
| 293 | return tbf; |
| 294 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 295 | } |
| 296 | return NULL; |
| 297 | } |
| 298 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 299 | struct gprs_rlcmac_tbf *tbf_by_poll_fn(uint32_t fn, uint8_t trx, uint8_t ts) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 300 | { |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 301 | struct gprs_rlcmac_tbf *tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 302 | |
| 303 | /* only one TBF can poll on specific TS/FN, because scheduler can only |
| 304 | * schedule one downlink control block (with polling) at a FN per TS */ |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 305 | llist_for_each_entry(tbf, &gprs_rlcmac_ul_tbfs, list) { |
| 306 | if (tbf->state != GPRS_RLCMAC_RELEASING |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 307 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 308 | && tbf->poll_fn == fn && tbf->trx == trx |
| 309 | && tbf->control_ts == ts) |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 310 | return tbf; |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 311 | } |
| 312 | llist_for_each_entry(tbf, &gprs_rlcmac_dl_tbfs, list) { |
| 313 | if (tbf->state != GPRS_RLCMAC_RELEASING |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 314 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 315 | && tbf->poll_fn == fn && tbf->trx == trx |
| 316 | && tbf->control_ts == ts) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 317 | return tbf; |
| 318 | } |
| 319 | return NULL; |
| 320 | } |
| 321 | |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 322 | struct gprs_rlcmac_tbf *tbf_alloc(struct gprs_rlcmac_bts *bts, |
| 323 | struct gprs_rlcmac_tbf *old_tbf, enum gprs_rlcmac_tbf_direction dir, |
| 324 | uint8_t tfi, uint8_t trx, |
Andreas Eversberg | 02d7cd2 | 2013-01-15 08:59:34 +0100 | [diff] [blame] | 325 | uint8_t ms_class, uint8_t single_slot) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 326 | { |
| 327 | struct gprs_rlcmac_tbf *tbf; |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 328 | int rc; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 329 | |
Andreas Eversberg | b83e2a7 | 2012-10-07 15:26:00 +0200 | [diff] [blame] | 330 | #ifdef DEBUG_DIAGRAM |
| 331 | /* hunt for first free number in diagram */ |
| 332 | int diagram_num; |
| 333 | for (diagram_num = 0; ; diagram_num++) { |
| 334 | llist_for_each_entry(tbf, &gprs_rlcmac_ul_tbfs, list) { |
| 335 | if (tbf->diag == diagram_num) |
| 336 | goto next_diagram; |
| 337 | } |
| 338 | llist_for_each_entry(tbf, &gprs_rlcmac_dl_tbfs, list) { |
| 339 | if (tbf->diag == diagram_num) |
| 340 | goto next_diagram; |
| 341 | } |
| 342 | break; |
| 343 | next_diagram: |
| 344 | continue; |
| 345 | } |
| 346 | #endif |
| 347 | |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 348 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF starts here **********\n"); |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 349 | LOGP(DRLCMAC, LOGL_INFO, "Allocating %s TBF: TFI=%d TRX=%d " |
| 350 | "MS_CLASS=%d\n", (dir == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
| 351 | tfi, trx, ms_class); |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 352 | |
Andreas Eversberg | 02d7cd2 | 2013-01-15 08:59:34 +0100 | [diff] [blame] | 353 | if (trx >= 8 || tfi >= 32) |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 354 | return NULL; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 355 | |
Andreas Eversberg | 6681bb8 | 2012-07-25 08:48:44 +0200 | [diff] [blame] | 356 | tbf = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_tbf); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 357 | if (!tbf) |
| 358 | return NULL; |
| 359 | |
Andreas Eversberg | b83e2a7 | 2012-10-07 15:26:00 +0200 | [diff] [blame] | 360 | #ifdef DEBUG_DIAGRAM |
| 361 | tbf->diag = diagram_num; |
| 362 | #endif |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 363 | tbf->direction = dir; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 364 | tbf->tfi = tfi; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 365 | tbf->trx = trx; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 366 | tbf->arfcn = bts->trx[trx].arfcn; |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 367 | tbf->ms_class = ms_class; |
| 368 | tbf->ws = 64; |
| 369 | tbf->sns = 128; |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 370 | /* select algorithm */ |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 371 | rc = bts->alloc_algorithm(bts, old_tbf, tbf, bts->alloc_algorithm_curst, |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 372 | single_slot); |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 373 | /* if no ressource */ |
| 374 | if (rc < 0) { |
| 375 | talloc_free(tbf); |
| 376 | return NULL; |
| 377 | } |
| 378 | /* assign control ts */ |
| 379 | tbf->control_ts = 0xff; |
| 380 | rc = tbf_assign_control_ts(tbf); |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 381 | /* if no ressource */ |
| 382 | if (rc < 0) { |
| 383 | talloc_free(tbf); |
| 384 | return NULL; |
| 385 | } |
| 386 | |
Andreas Eversberg | b3ded4c | 2012-07-24 10:47:24 +0200 | [diff] [blame] | 387 | /* set timestamp */ |
Andreas Eversberg | 050ace2 | 2013-03-16 16:22:02 +0100 | [diff] [blame] | 388 | gettimeofday(&tbf->meas.dl_bw_tv, NULL); |
| 389 | gettimeofday(&tbf->meas.rssi_tv, NULL); |
| 390 | gettimeofday(&tbf->meas.dl_loss_tv, NULL); |
Andreas Eversberg | b3ded4c | 2012-07-24 10:47:24 +0200 | [diff] [blame] | 391 | |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 392 | INIT_LLIST_HEAD(&tbf->llc_queue); |
| 393 | if (dir == GPRS_RLCMAC_UL_TBF) |
| 394 | llist_add(&tbf->list, &gprs_rlcmac_ul_tbfs); |
| 395 | else |
| 396 | llist_add(&tbf->list, &gprs_rlcmac_dl_tbfs); |
| 397 | |
Andreas Eversberg | b83e2a7 | 2012-10-07 15:26:00 +0200 | [diff] [blame] | 398 | debug_diagram(tbf->diag, "+-----------------+"); |
| 399 | debug_diagram(tbf->diag, "|NEW %s TBF TFI=%2d|", |
| 400 | (dir == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tfi); |
| 401 | debug_diagram(tbf->diag, "+-----------------+"); |
| 402 | |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 403 | return tbf; |
| 404 | } |
| 405 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 406 | /* Slot Allocation: Algorithm A |
| 407 | * |
| 408 | * Assign single slot for uplink and downlink |
| 409 | */ |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 410 | int alloc_algorithm_a(struct gprs_rlcmac_bts *bts, |
| 411 | struct gprs_rlcmac_tbf *old_tbf, |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 412 | struct gprs_rlcmac_tbf *tbf, uint32_t cust, uint8_t single) |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 413 | { |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 414 | struct gprs_rlcmac_pdch *pdch; |
Andreas Eversberg | 02d7cd2 | 2013-01-15 08:59:34 +0100 | [diff] [blame] | 415 | uint8_t ts; |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 416 | int8_t usf; /* must be signed */ |
| 417 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 418 | LOGP(DRLCMAC, LOGL_DEBUG, "Slot Allocation (Algorithm A) for class " |
| 419 | "%d\n", tbf->ms_class); |
| 420 | |
Andreas Eversberg | 02d7cd2 | 2013-01-15 08:59:34 +0100 | [diff] [blame] | 421 | for (ts = 0; ts < 8; ts++) { |
| 422 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
| 423 | if (!pdch->enable) { |
| 424 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, because " |
| 425 | "not enabled\n", ts); |
| 426 | continue; |
| 427 | } |
| 428 | break; |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 429 | } |
Andreas Eversberg | 02d7cd2 | 2013-01-15 08:59:34 +0100 | [diff] [blame] | 430 | if (ts == 8) |
| 431 | return -EINVAL; |
| 432 | |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 433 | tbf->tsc = pdch->tsc; |
| 434 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 435 | /* if USF available */ |
| 436 | usf = find_free_usf(pdch, ts); |
| 437 | if (usf >= 0) { |
| 438 | LOGP(DRLCMAC, LOGL_DEBUG, "- Assign uplink " |
| 439 | "TS=%d USF=%d\n", ts, usf); |
| 440 | bts->trx[tbf->trx].ul_tbf[tbf->tfi] = tbf; |
| 441 | pdch->ul_tbf[tbf->tfi] = tbf; |
| 442 | tbf->pdch[ts] = pdch; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 443 | } else { |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 444 | LOGP(DRLCMAC, LOGL_NOTICE, "- Failed " |
| 445 | "allocating TS=%d, no USF available\n", ts); |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 446 | return -EBUSY; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 447 | } |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 448 | } else { |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 449 | LOGP(DRLCMAC, LOGL_DEBUG, "- Assign downlink TS=%d\n", ts); |
| 450 | bts->trx[tbf->trx].dl_tbf[tbf->tfi] = tbf; |
| 451 | pdch->dl_tbf[tbf->tfi] = tbf; |
| 452 | tbf->pdch[ts] = pdch; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 453 | } |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 454 | /* the only one TS is the common TS */ |
Andreas Eversberg | 02d7cd2 | 2013-01-15 08:59:34 +0100 | [diff] [blame] | 455 | tbf->first_ts = tbf->first_common_ts = ts; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 456 | |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 457 | return 0; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 458 | } |
| 459 | |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 460 | /* Slot Allocation: Algorithm B |
| 461 | * |
| 462 | * Assign as many downlink slots as possible. |
| 463 | * Assign one uplink slot. (With free USF) |
| 464 | * |
| 465 | */ |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 466 | int alloc_algorithm_b(struct gprs_rlcmac_bts *bts, |
| 467 | struct gprs_rlcmac_tbf *old_tbf, |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 468 | struct gprs_rlcmac_tbf *tbf, uint32_t cust, uint8_t single) |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 469 | { |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 470 | struct gprs_rlcmac_pdch *pdch; |
Holger Hans Peter Freyther | 2023bd1 | 2013-08-24 22:27:52 +0200 | [diff] [blame] | 471 | const struct gprs_ms_multislot_class *ms_class; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 472 | uint8_t Rx, Tx, Sum; /* Maximum Number of Slots: RX, Tx, Sum Rx+Tx */ |
| 473 | uint8_t Tta, Ttb, Tra, Trb, Tt, Tr; /* Minimum Number of Slots */ |
| 474 | uint8_t Type; /* Type of Mobile */ |
Andreas Eversberg | 02d7cd2 | 2013-01-15 08:59:34 +0100 | [diff] [blame] | 475 | uint8_t rx_win_min = 0, rx_win_max = 7; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 476 | uint8_t tx_win_min, tx_win_max, tx_range; |
| 477 | uint8_t rx_window = 0, tx_window = 0; |
Holger Hans Peter Freyther | 2023bd1 | 2013-08-24 22:27:52 +0200 | [diff] [blame] | 478 | static const char *digit[10] = { "0","1","2","3","4","5","6","7","8","9" }; |
Andreas Eversberg | ba1cd9b | 2012-07-25 09:14:09 +0200 | [diff] [blame] | 479 | int8_t usf[8] = { -1, -1, -1, -1, -1, -1, -1, -1 }; /* must be signed */ |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 480 | int8_t tsc = -1; /* must be signed */ |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 481 | int8_t first_common_ts = -1; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 482 | uint8_t i, ts; |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 483 | uint8_t slotcount = 0; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 484 | |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 485 | |
| 486 | if (tbf->ms_class >= 32) { |
| 487 | LOGP(DRLCMAC, LOGL_ERROR, "Multislot class %d out of range.\n", |
| 488 | tbf->ms_class); |
| 489 | return -EINVAL; |
| 490 | } |
| 491 | |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 492 | if (tbf->ms_class) { |
| 493 | ms_class = &gprs_ms_multislot_class[tbf->ms_class]; |
| 494 | LOGP(DRLCMAC, LOGL_DEBUG, "Slot Allocation (Algorithm B) for " |
| 495 | "class %d\n", tbf->ms_class); |
| 496 | } else { |
| 497 | ms_class = &gprs_ms_multislot_class[12]; |
| 498 | LOGP(DRLCMAC, LOGL_DEBUG, "Slot Allocation (Algorithm B) for " |
| 499 | "unknow class (assuming 12)\n"); |
| 500 | } |
| 501 | |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 502 | if (ms_class->tx == MS_NA) { |
| 503 | LOGP(DRLCMAC, LOGL_NOTICE, "Multislot class %d not " |
| 504 | "applicable.\n", tbf->ms_class); |
| 505 | return -EINVAL; |
| 506 | } |
| 507 | |
| 508 | Rx = ms_class->rx; |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 509 | #if 0 |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 510 | if (Rx > 4) { |
| 511 | LOGP(DRLCMAC, LOGL_DEBUG, "- Degrading max Rx slots to 4\n"); |
| 512 | Rx = 4; |
| 513 | } |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 514 | #endif |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 515 | Tx = ms_class->tx; |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 516 | #if 0 |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 517 | if (Tx > 4) { |
| 518 | LOGP(DRLCMAC, LOGL_DEBUG, "- Degrading max Tx slots to 4\n"); |
| 519 | Tx = 4; |
| 520 | } |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 521 | #endif |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 522 | Sum = ms_class->sum; |
| 523 | Tta = ms_class->ta; |
| 524 | Ttb = ms_class->tb; |
| 525 | Tra = ms_class->ra; |
| 526 | Trb = ms_class->rb; |
| 527 | Type = ms_class->type; |
| 528 | |
| 529 | /* Tta and Ttb may depend on hopping or frequency change */ |
| 530 | if (Ttb == MS_A) { |
| 531 | if (/* FIXME: hopping*/ 0) |
| 532 | Ttb = 1; |
| 533 | else |
| 534 | Ttb = 0; |
| 535 | } |
| 536 | if (Trb == MS_A) { |
| 537 | if (/* FIXME: hopping*/ 0) |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 538 | Trb = 1; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 539 | else |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 540 | Trb = 0; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 541 | } |
| 542 | if (Ttb == MS_B) { |
| 543 | /* FIXME: or frequency change */ |
| 544 | if (/* FIXME: hopping*/ 0) |
| 545 | Ttb = 1; |
| 546 | else |
| 547 | Ttb = 0; |
| 548 | } |
| 549 | if (Trb == MS_C) { |
| 550 | /* FIXME: or frequency change */ |
| 551 | if (/* FIXME: hopping*/ 0) |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 552 | Trb = 1; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 553 | else |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 554 | Trb = 0; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 555 | } |
| 556 | |
| 557 | LOGP(DRLCMAC, LOGL_DEBUG, "- Rx=%d Tx=%d Sum Rx+Tx=%s Tta=%s Ttb=%d " |
| 558 | " Tra=%d Trb=%d Type=%d\n", Rx, Tx, |
| 559 | (Sum == MS_NA) ? "N/A" : digit[Sum], |
| 560 | (Tta == MS_NA) ? "N/A" : digit[Tta], Ttb, Tra, Trb, Type); |
| 561 | |
| 562 | /* select the values for time contraints */ |
| 563 | if (/* FIXME: monitoring */0) { |
| 564 | /* applicable to type 1 and type 2 */ |
| 565 | Tt = Ttb; |
| 566 | Tr = Tra; |
| 567 | } else { |
| 568 | /* applicable to type 1 and type 2 */ |
| 569 | Tt = Ttb; |
| 570 | Tr = Trb; |
| 571 | } |
| 572 | |
| 573 | /* select a window of Rx slots if available |
| 574 | * The maximum allowed slots depend on RX or the window of available |
| 575 | * slots. |
| 576 | * This must be done for uplink TBF also, because it is the basis |
| 577 | * for calculating control slot and uplink slot(s). */ |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 578 | for (ts = 0, i = 0; ts < 8; ts++) { |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 579 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
| 580 | /* check if enabled */ |
| 581 | if (!pdch->enable) { |
| 582 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, because " |
| 583 | "not enabled\n", ts); |
| 584 | /* increase window for Type 1 */ |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 585 | if (Type == 1 && rx_window) |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 586 | i++; |
| 587 | continue; |
| 588 | } |
| 589 | /* check if TSC changes */ |
| 590 | if (tsc < 0) |
| 591 | tbf->tsc = tsc = pdch->tsc; |
| 592 | else if (tsc != pdch->tsc) { |
| 593 | LOGP(DRLCMAC, LOGL_ERROR, "Skipping TS %d of TRX=%d, " |
| 594 | "because it has different TSC than lower TS " |
| 595 | "of TRX. In order to allow multislot, all " |
| 596 | "slots must be configured with the same " |
| 597 | "TSC!\n", ts, tbf->trx); |
| 598 | /* increase window for Type 1 */ |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 599 | if (Type == 1 && rx_window) |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 600 | i++; |
| 601 | continue; |
| 602 | } |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 603 | |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 604 | if (!rx_window) |
| 605 | rx_win_min = ts; |
| 606 | |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 607 | rx_window |= (1 << ts); |
| 608 | LOGP(DRLCMAC, LOGL_DEBUG, "- Selected DL TS %d\n", ts); |
| 609 | |
| 610 | /* range of window (required for Type 1) */ |
| 611 | rx_win_max = ts; |
| 612 | |
| 613 | if (++i == Rx) { |
| 614 | LOGP(DRLCMAC, LOGL_DEBUG, "- Done, because slots / " |
| 615 | "window reached maximum alowed Rx size\n"); |
| 616 | break; |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | LOGP(DRLCMAC, LOGL_DEBUG, "- Selected slots for RX: " |
| 621 | "(TS=0)\"%c%c%c%c%c%c%c%c\"(TS=7)\n", |
| 622 | ((rx_window & 0x01)) ? 'D' : '.', |
| 623 | ((rx_window & 0x02)) ? 'D' : '.', |
| 624 | ((rx_window & 0x04)) ? 'D' : '.', |
| 625 | ((rx_window & 0x08)) ? 'D' : '.', |
| 626 | ((rx_window & 0x10)) ? 'D' : '.', |
| 627 | ((rx_window & 0x20)) ? 'D' : '.', |
| 628 | ((rx_window & 0x40)) ? 'D' : '.', |
| 629 | ((rx_window & 0x80)) ? 'D' : '.'); |
| 630 | |
| 631 | /* reduce window, if existing uplink slots collide RX window */ |
| 632 | if (Type == 1 && old_tbf && old_tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| 633 | uint8_t collide = 0, ul_usage = 0; |
| 634 | int j; |
| 635 | |
| 636 | /* calculate mask of colliding slots */ |
Andreas Eversberg | 02d7cd2 | 2013-01-15 08:59:34 +0100 | [diff] [blame] | 637 | for (ts = 0; ts < 8; ts++) { |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 638 | if (old_tbf->pdch[ts]) { |
| 639 | ul_usage |= (1 << ts); |
| 640 | /* mark bits from TS-t .. TS+r */ |
| 641 | for (j = ts - Tt; j != ((ts + Tr + 1) & 7); |
| 642 | j = (j + 1) & 7) |
| 643 | collide |= (1 << j); |
| 644 | } |
| 645 | } |
| 646 | LOGP(DRLCMAC, LOGL_DEBUG, "- Not allowed slots due to existing " |
| 647 | "UL allocation: (TS=0)\"%c%c%c%c%c%c%c%c\"(TS=7) " |
| 648 | " D=downlink x=not usable\n", |
| 649 | ((ul_usage & 0x01)) ? 'D' : ((collide & 0x01))?'x':'.', |
| 650 | ((ul_usage & 0x02)) ? 'D' : ((collide & 0x02))?'x':'.', |
| 651 | ((ul_usage & 0x04)) ? 'D' : ((collide & 0x04))?'x':'.', |
| 652 | ((ul_usage & 0x08)) ? 'D' : ((collide & 0x08))?'x':'.', |
| 653 | ((ul_usage & 0x10)) ? 'D' : ((collide & 0x10))?'x':'.', |
| 654 | ((ul_usage & 0x20)) ? 'D' : ((collide & 0x20))?'x':'.', |
| 655 | ((ul_usage & 0x40)) ? 'D' : ((collide & 0x40))?'x':'.', |
| 656 | ((ul_usage & 0x80)) ? 'D' : ((collide & 0x80))?'x':'.'); |
| 657 | |
Holger Hans Peter Freyther | 9858060 | 2013-09-30 15:31:56 +0200 | [diff] [blame] | 658 | /* apply mask to reduce tx_window (shifted by 3 slots) */ |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 659 | rx_window &= ~(collide << 3); |
| 660 | rx_window &= ~(collide >> 5); |
| 661 | LOGP(DRLCMAC, LOGL_DEBUG, "- Remaining slots for RX: " |
| 662 | "(TS=0)\"%c%c%c%c%c%c%c%c\"(TS=7)\n", |
| 663 | ((rx_window & 0x01)) ? 'D' : '.', |
| 664 | ((rx_window & 0x02)) ? 'D' : '.', |
| 665 | ((rx_window & 0x04)) ? 'D' : '.', |
| 666 | ((rx_window & 0x08)) ? 'D' : '.', |
| 667 | ((rx_window & 0x10)) ? 'D' : '.', |
| 668 | ((rx_window & 0x20)) ? 'D' : '.', |
| 669 | ((rx_window & 0x40)) ? 'D' : '.', |
| 670 | ((rx_window & 0x80)) ? 'D' : '.'); |
| 671 | if (!rx_window) { |
| 672 | LOGP(DRLCMAC, LOGL_NOTICE, "No suitable downlink slots " |
| 673 | "available with current uplink assignment\n"); |
| 674 | return -EBUSY; |
| 675 | } |
| 676 | |
| 677 | /* calculate new min/max */ |
| 678 | for (ts = rx_win_min; ts <= rx_win_max; ts++) { |
| 679 | if ((rx_window & (1 << ts))) |
| 680 | break; |
| 681 | rx_win_min = ts + 1; |
Andreas Eversberg | 52c748c | 2012-07-15 16:33:02 +0200 | [diff] [blame] | 682 | LOGP(DRLCMAC, LOGL_DEBUG, "- TS has been deleted, so " |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 683 | "raising start of DL window to %d\n", |
| 684 | rx_win_min); |
| 685 | } |
| 686 | for (ts = rx_win_max; ts >= rx_win_min; ts--) { |
| 687 | if ((rx_window & (1 << ts))) |
| 688 | break; |
| 689 | rx_win_max = ts - 1; |
Andreas Eversberg | 52c748c | 2012-07-15 16:33:02 +0200 | [diff] [blame] | 690 | LOGP(DRLCMAC, LOGL_DEBUG, "- TS has been deleted, so " |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 691 | "lowering end of DL window to %d\n", |
| 692 | rx_win_max); |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | /* reduce window, to allow at least one uplink TX slot |
| 697 | * this is only required for Type 1 */ |
| 698 | if (Type == 1 && rx_win_max - rx_win_min + 1 + Tt + 1 + Tr > 8) { |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 699 | rx_win_max = rx_win_min + 7 - Tt - 1 - Tr; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 700 | LOGP(DRLCMAC, LOGL_DEBUG, "- Reduce RX window due to time " |
| 701 | "contraints to %d slots\n", |
| 702 | rx_win_max - rx_win_min + 1); |
| 703 | } |
| 704 | |
| 705 | LOGP(DRLCMAC, LOGL_DEBUG, "- RX-Window is: %d..%d\n", rx_win_min, |
| 706 | rx_win_max); |
| 707 | |
| 708 | /* calculate TX window */ |
| 709 | if (Type == 1) { |
| 710 | /* calculate TX window (shifted by 3 timeslots) |
| 711 | * it uses the space between tx_win_max and tx_win_min */ |
| 712 | tx_win_min = (rx_win_max - 2 + Tt) & 7; |
| 713 | tx_win_max = (rx_win_min + 4 - Tr) & 7; |
| 714 | /* calculate the TX window size (might be larger than Tx) */ |
| 715 | tx_range = (tx_win_max - tx_win_min + 1) & 7; |
| 716 | } else { |
| 717 | /* TX and RX simultaniously */ |
| 718 | tx_win_min = rx_win_min; |
| 719 | tx_win_max = 7; |
| 720 | /* TX window size (might be larger than Tx) */ |
| 721 | tx_range = tx_win_max - tx_win_min + 1; |
| 722 | } |
| 723 | |
| 724 | LOGP(DRLCMAC, LOGL_DEBUG, "- TX-Window is: %d..%d\n", tx_win_min, |
| 725 | tx_win_max); |
| 726 | |
| 727 | /* select a window of Tx slots if available |
| 728 | * The maximum allowed slots depend on TX or the window of available |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 729 | * slots. |
| 730 | * |
| 731 | * also assign the first common ts, which is used for control or single |
| 732 | * slot. */ |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 733 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| 734 | for (ts = tx_win_min, i = 0; i < tx_range; ts = (ts + 1) & 7) { |
| 735 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
| 736 | /* check if enabled */ |
| 737 | if (!pdch->enable) { |
| 738 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, " |
| 739 | "because not enabled\n", ts); |
| 740 | continue; |
| 741 | } |
| 742 | /* check if TSC changes */ |
| 743 | if (tsc < 0) |
| 744 | tbf->tsc = tsc = pdch->tsc; |
| 745 | else if (tsc != pdch->tsc) { |
| 746 | LOGP(DRLCMAC, LOGL_ERROR, "Skipping TS %d of " |
| 747 | "TRX=%d, because it has different TSC " |
| 748 | "than lower TS of TRX. In order to " |
| 749 | "allow multislot, all slots must be " |
| 750 | "configured with the same TSC!\n", |
| 751 | ts, tbf->trx); |
| 752 | /* increase window for Type 1 */ |
| 753 | if (Type == 1) |
| 754 | i++; |
| 755 | continue; |
| 756 | } |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 757 | /* check for free usf */ |
| 758 | usf[ts] = find_free_usf(pdch, ts); |
| 759 | if (usf[ts] < 0) { |
| 760 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, " |
| 761 | "because no USF available\n", ts); |
| 762 | /* increase window for Type 1 */ |
| 763 | if (Type == 1) |
| 764 | i++; |
| 765 | continue; |
| 766 | } |
| 767 | |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 768 | if (!tx_window) |
| 769 | first_common_ts = ts; |
| 770 | |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 771 | tx_window |= (1 << ts); |
| 772 | LOGP(DRLCMAC, LOGL_DEBUG, "- Selected UL TS %d\n", ts); |
| 773 | |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 774 | if (1 && Type == 1) { /* FIXME: multislot UL assignment */ |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 775 | LOGP(DRLCMAC, LOGL_DEBUG, "- Done, because " |
| 776 | "1 slot assigned\n"); |
| 777 | break; |
| 778 | } |
| 779 | if (++i == Tx) { |
| 780 | LOGP(DRLCMAC, LOGL_DEBUG, "- Done, because " |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 781 | "slots / window reached maximum " |
| 782 | "allowed Tx size\n"); |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 783 | break; |
| 784 | } |
| 785 | } |
| 786 | |
| 787 | LOGP(DRLCMAC, LOGL_DEBUG, "- Selected TX window: " |
| 788 | "(TS=0)\"%c%c%c%c%c%c%c%c\"(TS=7)\n", |
| 789 | ((tx_window & 0x01)) ? 'U' : '.', |
| 790 | ((tx_window & 0x02)) ? 'U' : '.', |
| 791 | ((tx_window & 0x04)) ? 'U' : '.', |
| 792 | ((tx_window & 0x08)) ? 'U' : '.', |
| 793 | ((tx_window & 0x10)) ? 'U' : '.', |
| 794 | ((tx_window & 0x20)) ? 'U' : '.', |
| 795 | ((tx_window & 0x40)) ? 'U' : '.', |
| 796 | ((tx_window & 0x80)) ? 'U' : '.'); |
| 797 | |
| 798 | if (!tx_window) { |
| 799 | LOGP(DRLCMAC, LOGL_NOTICE, "No suitable uplink slots " |
| 800 | "available\n"); |
| 801 | return -EBUSY; |
| 802 | } |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 803 | } else { |
| 804 | /* assign the first common ts, which is used for control or |
| 805 | * single slot. */ |
| 806 | for (ts = tx_win_min, i = 0; i < tx_range; ts = (ts + 1) & 7) { |
| 807 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
| 808 | /* check if enabled */ |
| 809 | if (!pdch->enable) { |
| 810 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, " |
| 811 | "because not enabled\n", ts); |
| 812 | continue; |
| 813 | } |
| 814 | first_common_ts = ts; |
| 815 | break; |
| 816 | } |
| 817 | } |
| 818 | |
| 819 | if (first_common_ts < 0) { |
| 820 | LOGP(DRLCMAC, LOGL_NOTICE, "No first common slots available\n"); |
| 821 | return -EINVAL; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 822 | } |
| 823 | |
| 824 | if (tbf->direction == GPRS_RLCMAC_DL_TBF) { |
| 825 | /* assign downlink */ |
| 826 | if (rx_window == 0) { |
| 827 | LOGP(DRLCMAC, LOGL_NOTICE, "No downlink slots " |
| 828 | "available\n"); |
| 829 | return -EINVAL; |
| 830 | } |
| 831 | for (ts = 0; ts < 8; ts++) { |
| 832 | if ((rx_window & (1 << ts))) { |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 833 | /* be sure to select a single downlink slots |
| 834 | * that can be used for uplink, if multiple |
| 835 | * slots are assigned later. */ |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 836 | if (single && first_common_ts != ts) |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 837 | continue; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 838 | LOGP(DRLCMAC, LOGL_DEBUG, "- Assigning DL TS " |
| 839 | "%d\n", ts); |
| 840 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 841 | bts->trx[tbf->trx].dl_tbf[tbf->tfi] = tbf; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 842 | pdch->dl_tbf[tbf->tfi] = tbf; |
| 843 | tbf->pdch[ts] = pdch; |
Andreas Eversberg | 52c748c | 2012-07-15 16:33:02 +0200 | [diff] [blame] | 844 | slotcount++; |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 845 | if (slotcount == 1) |
| 846 | tbf->first_ts = ts; |
| 847 | if (single) |
| 848 | break; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 849 | } |
| 850 | } |
| 851 | } else { |
| 852 | /* assign uplink */ |
| 853 | if (tx_window == 0) { |
| 854 | LOGP(DRLCMAC, LOGL_NOTICE, "No uplink slots " |
| 855 | "available\n"); |
| 856 | return -EINVAL; |
| 857 | } |
| 858 | for (ts = 0; ts < 8; ts++) { |
| 859 | if ((tx_window & (1 << ts))) { |
| 860 | LOGP(DRLCMAC, LOGL_DEBUG, "- Assigning UL TS " |
| 861 | "%d\n", ts); |
| 862 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 863 | bts->trx[tbf->trx].ul_tbf[tbf->tfi] = tbf; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 864 | pdch->ul_tbf[tbf->tfi] = tbf; |
| 865 | tbf->pdch[ts] = pdch; |
| 866 | tbf->dir.ul.usf[ts] = usf[ts]; |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 867 | slotcount++; |
| 868 | if (slotcount == 1) |
| 869 | tbf->first_ts = ts; |
| 870 | if (single) |
| 871 | break; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 872 | } |
| 873 | } |
| 874 | } |
Andreas Eversberg | f01929b | 2012-10-08 12:40:49 +0200 | [diff] [blame] | 875 | if (single && slotcount) { |
| 876 | LOGP(DRLCMAC, LOGL_INFO, "Using single slot at TS %d for %s\n", |
| 877 | tbf->first_ts, |
| 878 | (tbf->direction == GPRS_RLCMAC_DL_TBF) ? "DL" : "UL"); |
| 879 | } else { |
| 880 | LOGP(DRLCMAC, LOGL_INFO, "Using %d slots for %s\n", slotcount, |
| 881 | (tbf->direction == GPRS_RLCMAC_DL_TBF) ? "DL" : "UL"); |
| 882 | } |
| 883 | if (slotcount == 0) |
| 884 | return -EBUSY; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 885 | |
Andreas Eversberg | 97644ed | 2013-01-15 13:20:22 +0100 | [diff] [blame] | 886 | tbf->first_common_ts = first_common_ts; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 887 | |
| 888 | return 0; |
| 889 | } |
| 890 | |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 891 | /* starting time for assigning single slot |
| 892 | * This offset must be a multiple of 13. */ |
| 893 | #define AGCH_START_OFFSET 52 |
| 894 | |
| 895 | LLIST_HEAD(gprs_rlcmac_sbas); |
| 896 | |
| 897 | int sba_alloc(uint8_t *_trx, uint8_t *_ts, uint32_t *_fn, uint8_t ta) |
| 898 | { |
| 899 | |
| 900 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| 901 | struct gprs_rlcmac_pdch *pdch; |
| 902 | struct gprs_rlcmac_sba *sba; |
| 903 | uint8_t trx, ts; |
| 904 | uint32_t fn; |
| 905 | |
| 906 | sba = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_sba); |
| 907 | if (!sba) |
| 908 | return -ENOMEM; |
| 909 | |
| 910 | for (trx = 0; trx < 8; trx++) { |
| 911 | for (ts = 0; ts < 8; ts++) { |
| 912 | pdch = &bts->trx[trx].pdch[ts]; |
| 913 | if (!pdch->enable) |
| 914 | continue; |
| 915 | break; |
| 916 | } |
| 917 | if (ts < 8) |
| 918 | break; |
| 919 | } |
| 920 | if (trx == 8) { |
| 921 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH available.\n"); |
Holger Hans Peter Freyther | dcc9c39 | 2013-10-16 21:51:37 +0200 | [diff] [blame] | 922 | talloc_free(sba); |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 923 | return -EINVAL; |
| 924 | } |
| 925 | |
| 926 | fn = (pdch->last_rts_fn + AGCH_START_OFFSET) % 2715648; |
| 927 | |
| 928 | sba->trx = trx; |
| 929 | sba->ts = ts; |
| 930 | sba->fn = fn; |
| 931 | sba->ta = ta; |
| 932 | |
| 933 | llist_add(&sba->list, &gprs_rlcmac_sbas); |
| 934 | |
| 935 | *_trx = trx; |
| 936 | *_ts = ts; |
| 937 | *_fn = fn; |
| 938 | return 0; |
| 939 | } |
| 940 | |
| 941 | struct gprs_rlcmac_sba *sba_find(uint8_t trx, uint8_t ts, uint32_t fn) |
| 942 | { |
| 943 | struct gprs_rlcmac_sba *sba; |
| 944 | |
| 945 | llist_for_each_entry(sba, &gprs_rlcmac_sbas, list) { |
| 946 | if (sba->trx == trx && sba->ts == ts && sba->fn == fn) |
| 947 | return sba; |
| 948 | } |
| 949 | |
| 950 | return NULL; |
| 951 | } |
| 952 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 953 | #if 0 |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 954 | static void tbf_gsm_timer_cb(void *_tbf) |
| 955 | { |
| 956 | struct gprs_rlcmac_tbf *tbf = (struct gprs_rlcmac_tbf *)_tbf; |
| 957 | |
| 958 | tbf->num_fT_exp++; |
| 959 | |
| 960 | switch (tbf->fT) { |
| 961 | case 0: |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 962 | hier alles berdenken |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 963 | // This is timer for delay RLC/MAC data sending after Downlink Immediate Assignment on CCCH. |
| 964 | gprs_rlcmac_segment_llc_pdu(tbf); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 965 | LOGP(DRLCMAC, LOGL_NOTICE, "TBF: [DOWNLINK] END TFI: %u TLLI: 0x%08x \n", tbf->tfi, tbf->tlli); |
Ivan Kluchnikov | 9c795ab | 2012-05-24 23:12:59 +0400 | [diff] [blame] | 966 | tbf_free(tbf); |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 967 | break; |
| 968 | default: |
Ivan Kluchnikov | 856221f | 2012-06-15 09:31:29 +0400 | [diff] [blame] | 969 | LOGP(DRLCMAC, LOGL_NOTICE, "Timer expired in unknown mode: %u \n", tbf->fT); |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 970 | } |
| 971 | } |
| 972 | |
| 973 | static void tbf_gsm_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int fT, |
| 974 | int frames) |
| 975 | { |
| 976 | if (osmo_gsm_timer_pending(&tbf->gsm_timer)) |
Ivan Kluchnikov | 856221f | 2012-06-15 09:31:29 +0400 | [diff] [blame] | 977 | LOGP(DRLCMAC, LOGL_NOTICE, "Starting TBF timer %u while old timer %u pending \n", fT, tbf->fT); |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 978 | tbf->fT = fT; |
| 979 | tbf->num_fT_exp = 0; |
| 980 | |
| 981 | /* FIXME: we should do this only once ? */ |
| 982 | tbf->gsm_timer.data = tbf; |
| 983 | tbf->gsm_timer.cb = &tbf_gsm_timer_cb; |
| 984 | |
| 985 | osmo_gsm_timer_schedule(&tbf->gsm_timer, frames); |
| 986 | } |
| 987 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 988 | eine stop-funktion, auch im tbf_free aufrufen |
| 989 | |
| 990 | #endif |
| 991 | |
| 992 | #if 0 |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 993 | void gprs_rlcmac_enqueue_block(bitvec *block, int len) |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 994 | { |
| 995 | struct msgb *msg = msgb_alloc(len, "rlcmac_dl"); |
| 996 | bitvec_pack(block, msgb_put(msg, len)); |
| 997 | msgb_enqueue(&block_queue, msg); |
| 998 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 999 | #endif |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 1000 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1001 | /* received RLC/MAC block from L1 */ |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1002 | int gprs_rlcmac_rcv_block(uint8_t trx, uint8_t ts, uint8_t *data, uint8_t len, |
Andreas Eversberg | 570b44b | 2013-03-16 16:15:01 +0100 | [diff] [blame] | 1003 | uint32_t fn, int8_t rssi) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1004 | { |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1005 | unsigned payload = data[0] >> 6; |
| 1006 | bitvec *block; |
| 1007 | int rc = 0; |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 1008 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1009 | switch (payload) { |
| 1010 | case GPRS_RLCMAC_DATA_BLOCK: |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1011 | rc = gprs_rlcmac_rcv_data_block_acknowledged(trx, ts, data, |
Andreas Eversberg | 570b44b | 2013-03-16 16:15:01 +0100 | [diff] [blame] | 1012 | len, rssi); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1013 | break; |
| 1014 | case GPRS_RLCMAC_CONTROL_BLOCK: |
| 1015 | block = bitvec_alloc(len); |
| 1016 | if (!block) |
| 1017 | return -ENOMEM; |
| 1018 | bitvec_unpack(block, data); |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1019 | rc = gprs_rlcmac_rcv_control_block(block, trx, ts, fn); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1020 | bitvec_free(block); |
| 1021 | break; |
| 1022 | case GPRS_RLCMAC_CONTROL_BLOCK_OPT: |
| 1023 | LOGP(DRLCMAC, LOGL_NOTICE, "GPRS_RLCMAC_CONTROL_BLOCK_OPT block payload is not supported.\n"); |
Holger Hans Peter Freyther | 26da836 | 2013-10-16 16:34:09 +0200 | [diff] [blame] | 1024 | break; |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1025 | default: |
Holger Hans Peter Freyther | 70862c9 | 2013-10-16 16:37:22 +0200 | [diff] [blame] | 1026 | LOGP(DRLCMAC, LOGL_NOTICE, "Unknown RLCMAC block payload(%u).\n", payload); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1027 | rc = -EINVAL; |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 1028 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1029 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1030 | return rc; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1031 | } |
| 1032 | |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1033 | /* add paging to paging queue(s) */ |
| 1034 | int gprs_rlcmac_add_paging(uint8_t chan_needed, uint8_t *identity_lv) |
| 1035 | { |
| 1036 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| 1037 | uint8_t l, trx, ts, any_tbf = 0; |
| 1038 | struct gprs_rlcmac_tbf *tbf; |
| 1039 | struct gprs_rlcmac_paging *pag; |
| 1040 | uint8_t slot_mask[8]; |
| 1041 | int8_t first_ts; /* must be signed */ |
| 1042 | |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1043 | LOGP(DRLCMAC, LOGL_INFO, "Add RR paging: chan-needed=%d MI=%s\n", |
| 1044 | chan_needed, osmo_hexdump(identity_lv + 1, identity_lv[0])); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1045 | |
| 1046 | /* collect slots to page |
| 1047 | * Mark slots for every TBF, but only mark one of it. |
| 1048 | * Mark only the first slot found. |
| 1049 | * Don't mark, if TBF uses a different slot that is already marked. */ |
| 1050 | memset(slot_mask, 0, sizeof(slot_mask)); |
| 1051 | for (l = 0; gprs_rlcmac_tbfs_lists[l]; l++) { |
| 1052 | llist_for_each_entry(tbf, gprs_rlcmac_tbfs_lists[l], list) { |
| 1053 | first_ts = -1; |
| 1054 | for (ts = 0; ts < 8; ts++) { |
| 1055 | if (tbf->pdch[ts]) { |
| 1056 | /* remember the first slot found */ |
| 1057 | if (first_ts < 0) |
| 1058 | first_ts = ts; |
| 1059 | /* break, if we already marked a slot */ |
| 1060 | if ((slot_mask[tbf->trx] & (1 << ts))) |
| 1061 | break; |
| 1062 | } |
| 1063 | } |
| 1064 | /* mark first slot found, if none is marked already */ |
| 1065 | if (ts == 8 && first_ts >= 0) { |
| 1066 | LOGP(DRLCMAC, LOGL_DEBUG, "- %s TBF=%d uses " |
| 1067 | "TRX=%d TS=%d, so we mark\n", |
| 1068 | (tbf->direction == GPRS_RLCMAC_UL_TBF) |
| 1069 | ? "UL" : "DL", |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1070 | tbf->tfi, tbf->trx, first_ts); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1071 | slot_mask[tbf->trx] |= (1 << first_ts); |
| 1072 | } else |
| 1073 | LOGP(DRLCMAC, LOGL_DEBUG, "- %s TBF=%d uses " |
| 1074 | "already marked TRX=%d TS=%d\n", |
| 1075 | (tbf->direction == GPRS_RLCMAC_UL_TBF) |
| 1076 | ? "UL" : "DL", |
| 1077 | tbf->tfi, tbf->trx, ts); |
| 1078 | } |
| 1079 | } |
| 1080 | |
| 1081 | /* Now we have a list of marked slots. Every TBF uses at least one |
| 1082 | * of these slots. */ |
| 1083 | |
| 1084 | /* schedule paging to all marked slots */ |
| 1085 | for (trx = 0; trx < 8; trx++) { |
| 1086 | if (slot_mask[trx] == 0) |
| 1087 | continue; |
| 1088 | any_tbf = 1; |
| 1089 | for (ts = 0; ts < 8; ts++) { |
| 1090 | if ((slot_mask[trx] & (1 << ts))) { |
| 1091 | /* schedule */ |
Andreas Eversberg | 6681bb8 | 2012-07-25 08:48:44 +0200 | [diff] [blame] | 1092 | pag = talloc_zero(tall_pcu_ctx, |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1093 | struct gprs_rlcmac_paging); |
| 1094 | if (!pag) |
| 1095 | return -ENOMEM; |
| 1096 | pag->chan_needed = chan_needed; |
| 1097 | memcpy(pag->identity_lv, identity_lv, |
| 1098 | identity_lv[0] + 1); |
| 1099 | llist_add(&pag->list, |
| 1100 | &bts->trx[trx].pdch[ts].paging_list); |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1101 | LOGP(DRLCMAC, LOGL_INFO, "Paging on PACCH of " |
| 1102 | "TRX=%d TS=%d\n", trx, ts); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1103 | } |
| 1104 | } |
| 1105 | } |
| 1106 | |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1107 | if (!any_tbf) |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1108 | LOGP(DRLCMAC, LOGL_INFO, "No paging, because no TBF\n"); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1109 | |
| 1110 | return 0; |
| 1111 | } |
| 1112 | |
| 1113 | struct gprs_rlcmac_paging *gprs_rlcmac_dequeue_paging( |
| 1114 | struct gprs_rlcmac_pdch *pdch) |
| 1115 | { |
| 1116 | struct gprs_rlcmac_paging *pag; |
| 1117 | |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1118 | if (llist_empty(&pdch->paging_list)) |
| 1119 | return NULL; |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1120 | pag = llist_entry(pdch->paging_list.next, |
| 1121 | struct gprs_rlcmac_paging, list); |
| 1122 | llist_del(&pag->list); |
| 1123 | |
| 1124 | return pag; |
| 1125 | } |
| 1126 | |
| 1127 | struct msgb *gprs_rlcmac_send_packet_paging_request( |
| 1128 | struct gprs_rlcmac_pdch *pdch) |
| 1129 | { |
| 1130 | struct gprs_rlcmac_paging *pag; |
| 1131 | struct msgb *msg; |
| 1132 | unsigned wp = 0, len; |
| 1133 | |
| 1134 | /* no paging, no message */ |
| 1135 | pag = gprs_rlcmac_dequeue_paging(pdch); |
| 1136 | if (!pag) |
| 1137 | return NULL; |
| 1138 | |
| 1139 | LOGP(DRLCMAC, LOGL_DEBUG, "Scheduling paging\n"); |
| 1140 | |
| 1141 | /* alloc message */ |
| 1142 | msg = msgb_alloc(23, "pag ctrl block"); |
Andreas Eversberg | 5cae087 | 2012-10-07 15:08:22 +0200 | [diff] [blame] | 1143 | if (!msg) { |
| 1144 | talloc_free(pag); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1145 | return NULL; |
Andreas Eversberg | 5cae087 | 2012-10-07 15:08:22 +0200 | [diff] [blame] | 1146 | } |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1147 | bitvec *pag_vec = bitvec_alloc(23); |
| 1148 | if (!pag_vec) { |
| 1149 | msgb_free(msg); |
Andreas Eversberg | 5cae087 | 2012-10-07 15:08:22 +0200 | [diff] [blame] | 1150 | talloc_free(pag); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1151 | return NULL; |
| 1152 | } |
| 1153 | wp = write_packet_paging_request(pag_vec); |
| 1154 | |
| 1155 | /* loop until message is full */ |
| 1156 | while (pag) { |
| 1157 | /* try to add paging */ |
| 1158 | if ((pag->identity_lv[1] & 0x07) == 4) { |
| 1159 | /* TMSI */ |
| 1160 | LOGP(DRLCMAC, LOGL_DEBUG, "- TMSI=0x%08x\n", |
| 1161 | ntohl(*((uint32_t *)(pag->identity_lv + 1)))); |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1162 | len = 1 + 1 + 1 + 32 + 2 + 1; |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1163 | if (pag->identity_lv[0] != 5) { |
| 1164 | LOGP(DRLCMAC, LOGL_ERROR, "TMSI paging with " |
| 1165 | "MI != 5 octets!\n"); |
Andreas Eversberg | 5cae087 | 2012-10-07 15:08:22 +0200 | [diff] [blame] | 1166 | goto continue_next; |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1167 | } |
| 1168 | } else { |
| 1169 | /* MI */ |
| 1170 | LOGP(DRLCMAC, LOGL_DEBUG, "- MI=%s\n", |
| 1171 | osmo_hexdump(pag->identity_lv + 1, |
| 1172 | pag->identity_lv[0])); |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1173 | len = 1 + 1 + 1 + 4 + (pag->identity_lv[0]<<3) + 2 + 1; |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1174 | if (pag->identity_lv[0] > 8) { |
| 1175 | LOGP(DRLCMAC, LOGL_ERROR, "Paging with " |
| 1176 | "MI > 8 octets!\n"); |
Andreas Eversberg | 5cae087 | 2012-10-07 15:08:22 +0200 | [diff] [blame] | 1177 | goto continue_next; |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1178 | } |
| 1179 | } |
| 1180 | if (wp + len > 184) { |
| 1181 | LOGP(DRLCMAC, LOGL_DEBUG, "- Does not fit, so schedule " |
| 1182 | "next time\n"); |
| 1183 | /* put back paging record, because does not fit */ |
| 1184 | llist_add_tail(&pag->list, &pdch->paging_list); |
| 1185 | break; |
| 1186 | } |
| 1187 | write_repeated_page_info(pag_vec, wp, pag->identity_lv[0], |
| 1188 | pag->identity_lv + 1, pag->chan_needed); |
| 1189 | |
Andreas Eversberg | 5cae087 | 2012-10-07 15:08:22 +0200 | [diff] [blame] | 1190 | continue_next: |
| 1191 | talloc_free(pag); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1192 | pag = gprs_rlcmac_dequeue_paging(pdch); |
| 1193 | } |
| 1194 | |
| 1195 | bitvec_pack(pag_vec, msgb_put(msg, 23)); |
Andreas Eversberg | 6681bb8 | 2012-07-25 08:48:44 +0200 | [diff] [blame] | 1196 | RlcMacDownlink_t * mac_control_block = (RlcMacDownlink_t *)talloc_zero(tall_pcu_ctx, RlcMacDownlink_t); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1197 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Paging Request +++++++++++++++++++++++++\n"); |
| 1198 | decode_gsm_rlcmac_downlink(pag_vec, mac_control_block); |
| 1199 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 1200 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Paging Request -------------------------\n"); |
| 1201 | bitvec_free(pag_vec); |
Andreas Eversberg | 6681bb8 | 2012-07-25 08:48:44 +0200 | [diff] [blame] | 1202 | talloc_free(mac_control_block); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1203 | |
| 1204 | return msg; |
| 1205 | } |
| 1206 | |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1207 | // GSM 04.08 9.1.18 Immediate assignment |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1208 | int write_immediate_assignment(bitvec * dest, uint8_t downlink, uint8_t ra, |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 1209 | uint32_t ref_fn, uint8_t ta, uint16_t arfcn, uint8_t ts, uint8_t tsc, |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1210 | uint8_t tfi, uint8_t usf, uint32_t tlli, |
Andreas Eversberg | aafcbbb | 2012-09-27 09:20:45 +0200 | [diff] [blame] | 1211 | uint8_t polling, uint32_t fn, uint8_t single_block, uint8_t alpha, |
Andreas Eversberg | afdd9e1 | 2012-10-07 17:08:55 +0200 | [diff] [blame] | 1212 | uint8_t gamma, int8_t ta_idx) |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1213 | { |
| 1214 | unsigned wp = 0; |
Andreas Eversberg | 7b04501 | 2012-07-05 07:38:49 +0200 | [diff] [blame] | 1215 | uint8_t plen; |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1216 | |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1217 | bitvec_write_field(dest, wp,0x0,4); // Skip Indicator |
| 1218 | bitvec_write_field(dest, wp,0x6,4); // Protocol Discriminator |
| 1219 | bitvec_write_field(dest, wp,0x3F,8); // Immediate Assignment Message Type |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1220 | |
| 1221 | // 10.5.2.25b Dedicated mode or TBF |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1222 | bitvec_write_field(dest, wp,0x0,1); // spare |
| 1223 | bitvec_write_field(dest, wp,0x0,1); // TMA : Two-message assignment: No meaning |
| 1224 | bitvec_write_field(dest, wp,downlink,1); // Downlink : Downlink assignment to mobile in packet idle mode |
| 1225 | bitvec_write_field(dest, wp,0x1,1); // T/D : TBF or dedicated mode: this message assigns a Temporary Block Flow (TBF). |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1226 | |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1227 | bitvec_write_field(dest, wp,0x0,4); // Page Mode |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1228 | |
| 1229 | // GSM 04.08 10.5.2.25a Packet Channel Description |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1230 | bitvec_write_field(dest, wp,0x1,5); // Channel type |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 1231 | bitvec_write_field(dest, wp,ts,3); // TN |
| 1232 | bitvec_write_field(dest, wp,tsc,3); // TSC |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1233 | bitvec_write_field(dest, wp,0x0,3); // non-hopping RF channel configuraion |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 1234 | bitvec_write_field(dest, wp,arfcn,10); // ARFCN |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1235 | |
| 1236 | //10.5.2.30 Request Reference |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1237 | bitvec_write_field(dest, wp,ra,8); // RA |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 1238 | bitvec_write_field(dest, wp,(ref_fn / (26 * 51)) % 32,5); // T1' |
| 1239 | bitvec_write_field(dest, wp,ref_fn % 51,6); // T3 |
| 1240 | bitvec_write_field(dest, wp,ref_fn % 26,5); // T2 |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1241 | |
| 1242 | // 10.5.2.40 Timing Advance |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1243 | bitvec_write_field(dest, wp,0x0,2); // spare |
| 1244 | bitvec_write_field(dest, wp,ta,6); // Timing Advance value |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1245 | |
| 1246 | // No mobile allocation in non-hopping systems. |
| 1247 | // A zero-length LV. Just write L=0. |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1248 | bitvec_write_field(dest, wp,0,8); |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1249 | |
Andreas Eversberg | 7b04501 | 2012-07-05 07:38:49 +0200 | [diff] [blame] | 1250 | if ((wp % 8)) { |
| 1251 | LOGP(DRLCMACUL, LOGL_ERROR, "Length of IMM.ASS without rest " |
| 1252 | "octets is not multiple of 8 bits, PLEASE FIX!\n"); |
| 1253 | exit (0); |
| 1254 | } |
| 1255 | plen = wp / 8; |
| 1256 | |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1257 | if (downlink) |
| 1258 | { |
| 1259 | // GSM 04.08 10.5.2.16 IA Rest Octets |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1260 | bitvec_write_field(dest, wp, 3, 2); // "HH" |
| 1261 | bitvec_write_field(dest, wp, 1, 2); // "01" Packet Downlink Assignment |
| 1262 | bitvec_write_field(dest, wp,tlli,32); // TLLI |
| 1263 | bitvec_write_field(dest, wp,0x1,1); // switch TFI : on |
| 1264 | bitvec_write_field(dest, wp,tfi,5); // TFI |
| 1265 | bitvec_write_field(dest, wp,0x0,1); // RLC acknowledged mode |
Andreas Eversberg | aafcbbb | 2012-09-27 09:20:45 +0200 | [diff] [blame] | 1266 | if (alpha) { |
| 1267 | bitvec_write_field(dest, wp,0x1,1); // ALPHA = present |
| 1268 | bitvec_write_field(dest, wp,alpha,4); // ALPHA |
| 1269 | } else { |
| 1270 | bitvec_write_field(dest, wp,0x0,1); // ALPHA = not present |
| 1271 | } |
| 1272 | bitvec_write_field(dest, wp,gamma,5); // GAMMA power control parameter |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1273 | bitvec_write_field(dest, wp,polling,1); // Polling Bit |
| 1274 | bitvec_write_field(dest, wp,!polling,1); // TA_VALID ??? |
Andreas Eversberg | afdd9e1 | 2012-10-07 17:08:55 +0200 | [diff] [blame] | 1275 | if (ta_idx < 0) { |
| 1276 | bitvec_write_field(dest, wp,0x0,1); // switch TIMING_ADVANCE_INDEX = off |
| 1277 | } else { |
| 1278 | bitvec_write_field(dest, wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on |
| 1279 | bitvec_write_field(dest, wp,ta_idx,4); // TIMING_ADVANCE_INDEX |
| 1280 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1281 | if (polling) { |
| 1282 | bitvec_write_field(dest, wp,0x1,1); // TBF Starting TIME present |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 1283 | bitvec_write_field(dest, wp,(fn / (26 * 51)) % 32,5); // T1' |
| 1284 | bitvec_write_field(dest, wp,fn % 51,6); // T3 |
| 1285 | bitvec_write_field(dest, wp,fn % 26,5); // T2 |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1286 | } else { |
| 1287 | bitvec_write_field(dest, wp,0x0,1); // TBF Starting TIME present |
| 1288 | } |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1289 | bitvec_write_field(dest, wp,0x0,1); // P0 not present |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1290 | // bitvec_write_field(dest, wp,0x1,1); // P0 not present |
| 1291 | // bitvec_write_field(dest, wp,0xb,4); |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1292 | } |
| 1293 | else |
| 1294 | { |
Andreas Eversberg | dfa563c | 2012-07-06 08:13:59 +0200 | [diff] [blame] | 1295 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1296 | // GMS 04.08 10.5.2.37b 10.5.2.16 |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1297 | bitvec_write_field(dest, wp, 3, 2); // "HH" |
| 1298 | bitvec_write_field(dest, wp, 0, 2); // "0" Packet Uplink Assignment |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 1299 | if (single_block) { |
| 1300 | bitvec_write_field(dest, wp, 0, 1); // Block Allocation : Single Block Allocation |
Andreas Eversberg | aafcbbb | 2012-09-27 09:20:45 +0200 | [diff] [blame] | 1301 | if (alpha) { |
| 1302 | bitvec_write_field(dest, wp,0x1,1); // ALPHA = present |
| 1303 | bitvec_write_field(dest, wp,alpha,4); // ALPHA = present |
| 1304 | } else |
| 1305 | bitvec_write_field(dest, wp,0x0,1); // ALPHA = not present |
| 1306 | bitvec_write_field(dest, wp,gamma,5); // GAMMA power control parameter |
Andreas Eversberg | afdd9e1 | 2012-10-07 17:08:55 +0200 | [diff] [blame] | 1307 | if (ta_idx < 0) { |
| 1308 | bitvec_write_field(dest, wp,0x0,1); // switch TIMING_ADVANCE_INDEX = off |
| 1309 | } else { |
| 1310 | bitvec_write_field(dest, wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on |
| 1311 | bitvec_write_field(dest, wp,ta_idx,4); // TIMING_ADVANCE_INDEX |
| 1312 | } |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 1313 | bitvec_write_field(dest, wp, 1, 1); // TBF_STARTING_TIME_FLAG |
| 1314 | bitvec_write_field(dest, wp,(fn / (26 * 51)) % 32,5); // T1' |
| 1315 | bitvec_write_field(dest, wp,fn % 51,6); // T3 |
| 1316 | bitvec_write_field(dest, wp,fn % 26,5); // T2 |
| 1317 | } else { |
| 1318 | bitvec_write_field(dest, wp, 1, 1); // Block Allocation : Not Single Block Allocation |
| 1319 | bitvec_write_field(dest, wp, tfi, 5); // TFI_ASSIGNMENT Temporary Flow Identity |
| 1320 | bitvec_write_field(dest, wp, 0, 1); // POLLING |
| 1321 | bitvec_write_field(dest, wp, 0, 1); // ALLOCATION_TYPE: dynamic |
| 1322 | bitvec_write_field(dest, wp, usf, 3); // USF |
| 1323 | bitvec_write_field(dest, wp, 0, 1); // USF_GRANULARITY |
| 1324 | bitvec_write_field(dest, wp, 0, 1); // "0" power control: Not Present |
Andreas Eversberg | 499ff41 | 2012-10-03 14:21:36 +0200 | [diff] [blame] | 1325 | bitvec_write_field(dest, wp, bts->initial_cs_ul-1, 2); // CHANNEL_CODING_COMMAND |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 1326 | bitvec_write_field(dest, wp, 1, 1); // TLLI_BLOCK_CHANNEL_CODING |
Andreas Eversberg | aafcbbb | 2012-09-27 09:20:45 +0200 | [diff] [blame] | 1327 | if (alpha) { |
| 1328 | bitvec_write_field(dest, wp,0x1,1); // ALPHA = present |
| 1329 | bitvec_write_field(dest, wp,alpha,4); // ALPHA |
| 1330 | } else |
| 1331 | bitvec_write_field(dest, wp,0x0,1); // ALPHA = not present |
| 1332 | bitvec_write_field(dest, wp,gamma,5); // GAMMA power control parameter |
Andreas Eversberg | afdd9e1 | 2012-10-07 17:08:55 +0200 | [diff] [blame] | 1333 | /* note: there is no choise for TAI and no starting time */ |
| 1334 | bitvec_write_field(dest, wp, 0, 1); // switch TIMING_ADVANCE_INDEX = off |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 1335 | bitvec_write_field(dest, wp, 0, 1); // TBF_STARTING_TIME_FLAG |
| 1336 | } |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1337 | } |
| 1338 | |
Andreas Eversberg | 7b04501 | 2012-07-05 07:38:49 +0200 | [diff] [blame] | 1339 | return plen; |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1340 | } |
| 1341 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1342 | /* generate uplink assignment */ |
| 1343 | void write_packet_uplink_assignment(bitvec * dest, uint8_t old_tfi, |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1344 | uint8_t old_downlink, uint32_t tlli, uint8_t use_tlli, |
Andreas Eversberg | aafcbbb | 2012-09-27 09:20:45 +0200 | [diff] [blame] | 1345 | struct gprs_rlcmac_tbf *tbf, uint8_t poll, uint8_t alpha, |
Andreas Eversberg | afdd9e1 | 2012-10-07 17:08:55 +0200 | [diff] [blame] | 1346 | uint8_t gamma, int8_t ta_idx) |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1347 | { |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1348 | // TODO We should use our implementation of encode RLC/MAC Control messages. |
Andreas Eversberg | dfa563c | 2012-07-06 08:13:59 +0200 | [diff] [blame] | 1349 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1350 | unsigned wp = 0; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1351 | uint8_t ts; |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1352 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1353 | bitvec_write_field(dest, wp,0x1,2); // Payload Type |
| 1354 | bitvec_write_field(dest, wp,0x0,2); // Uplink block with TDMA framenumber (N+13) |
| 1355 | bitvec_write_field(dest, wp,poll,1); // Suppl/Polling Bit |
| 1356 | bitvec_write_field(dest, wp,0x0,3); // Uplink state flag |
| 1357 | bitvec_write_field(dest, wp,0xa,6); // MESSAGE TYPE |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1358 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1359 | bitvec_write_field(dest, wp,0x0,2); // Page Mode |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1360 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1361 | bitvec_write_field(dest, wp,0x0,1); // switch PERSIST_LEVEL: off |
| 1362 | if (use_tlli) { |
| 1363 | bitvec_write_field(dest, wp,0x2,2); // switch TLLI : on |
| 1364 | bitvec_write_field(dest, wp,tlli,32); // TLLI |
| 1365 | } else { |
| 1366 | bitvec_write_field(dest, wp,0x0,1); // switch TFI : on |
| 1367 | bitvec_write_field(dest, wp,old_downlink,1); // 0=UPLINK TFI, 1=DL TFI |
| 1368 | bitvec_write_field(dest, wp,old_tfi,5); // TFI |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1369 | } |
Ivan Kluchnikov | b2b8100 | 2012-06-04 21:57:02 +0400 | [diff] [blame] | 1370 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1371 | bitvec_write_field(dest, wp,0x0,1); // Message escape |
Andreas Eversberg | 499ff41 | 2012-10-03 14:21:36 +0200 | [diff] [blame] | 1372 | bitvec_write_field(dest, wp,bts->initial_cs_ul-1, 2); // CHANNEL_CODING_COMMAND |
Andreas Eversberg | dfa563c | 2012-07-06 08:13:59 +0200 | [diff] [blame] | 1373 | bitvec_write_field(dest, wp,0x1,1); // TLLI_BLOCK_CHANNEL_CODING |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1374 | bitvec_write_field(dest, wp,0x1,1); // switch TIMING_ADVANCE_VALUE = on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1375 | bitvec_write_field(dest, wp,tbf->ta,6); // TIMING_ADVANCE_VALUE |
Andreas Eversberg | afdd9e1 | 2012-10-07 17:08:55 +0200 | [diff] [blame] | 1376 | if (ta_idx < 0) { |
| 1377 | bitvec_write_field(dest, wp,0x0,1); // switch TIMING_ADVANCE_INDEX = off |
| 1378 | } else { |
| 1379 | bitvec_write_field(dest, wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on |
| 1380 | bitvec_write_field(dest, wp,ta_idx,4); // TIMING_ADVANCE_INDEX |
| 1381 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1382 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1383 | #if 1 |
| 1384 | bitvec_write_field(dest, wp,0x1,1); // Frequency Parameters information elements = present |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1385 | bitvec_write_field(dest, wp,tbf->tsc,3); // Training Sequence Code (TSC) |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1386 | bitvec_write_field(dest, wp,0x0,2); // ARFCN = present |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1387 | bitvec_write_field(dest, wp,tbf->arfcn,10); // ARFCN |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1388 | #else |
| 1389 | bitvec_write_field(dest, wp,0x0,1); // Frequency Parameters = off |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 1390 | #endif |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1391 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1392 | bitvec_write_field(dest, wp,0x1,2); // Dynamic Allocation |
Ivan Kluchnikov | e359423 | 2012-06-07 01:12:29 +0400 | [diff] [blame] | 1393 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1394 | bitvec_write_field(dest, wp,0x0,1); // Extended Dynamic Allocation = off |
| 1395 | bitvec_write_field(dest, wp,0x0,1); // P0 = off |
Ivan Kluchnikov | e359423 | 2012-06-07 01:12:29 +0400 | [diff] [blame] | 1396 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1397 | bitvec_write_field(dest, wp,0x0,1); // USF_GRANULARITY |
| 1398 | bitvec_write_field(dest, wp,0x1,1); // switch TFI : on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1399 | bitvec_write_field(dest, wp,tbf->tfi,5);// TFI |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1400 | |
| 1401 | bitvec_write_field(dest, wp,0x0,1); // |
| 1402 | bitvec_write_field(dest, wp,0x0,1); // TBF Starting Time = off |
Andreas Eversberg | aafcbbb | 2012-09-27 09:20:45 +0200 | [diff] [blame] | 1403 | if (alpha || gamma) { |
| 1404 | bitvec_write_field(dest, wp,0x1,1); // Timeslot Allocation with Power Control |
| 1405 | bitvec_write_field(dest, wp,alpha,4); // ALPHA |
| 1406 | } else |
| 1407 | bitvec_write_field(dest, wp,0x0,1); // Timeslot Allocation |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1408 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1409 | for (ts = 0; ts < 8; ts++) { |
| 1410 | if (tbf->pdch[ts]) { |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1411 | bitvec_write_field(dest, wp,0x1,1); // USF_TN(i): on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1412 | bitvec_write_field(dest, wp,tbf->dir.ul.usf[ts],3); // USF_TN(i) |
Andreas Eversberg | aafcbbb | 2012-09-27 09:20:45 +0200 | [diff] [blame] | 1413 | if (alpha || gamma) |
| 1414 | bitvec_write_field(dest, wp,gamma,5); // GAMMA power control parameter |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1415 | } else |
| 1416 | bitvec_write_field(dest, wp,0x0,1); // USF_TN(i): off |
Ivan Kluchnikov | e359423 | 2012-06-07 01:12:29 +0400 | [diff] [blame] | 1417 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1418 | // bitvec_write_field(dest, wp,0x0,1); // Measurement Mapping struct not present |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1419 | } |
| 1420 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1421 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1422 | /* generate downlink assignment */ |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1423 | void write_packet_downlink_assignment(RlcMacDownlink_t * block, uint8_t old_tfi, |
Andreas Eversberg | aafcbbb | 2012-09-27 09:20:45 +0200 | [diff] [blame] | 1424 | uint8_t old_downlink, struct gprs_rlcmac_tbf *tbf, uint8_t poll, |
Andreas Eversberg | afdd9e1 | 2012-10-07 17:08:55 +0200 | [diff] [blame] | 1425 | uint8_t alpha, uint8_t gamma, int8_t ta_idx, uint8_t ta_ts) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1426 | { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1427 | // Packet downlink assignment TS 44.060 11.2.7 |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1428 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1429 | uint8_t tn; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1430 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1431 | block->PAYLOAD_TYPE = 0x1; // RLC/MAC control block that does not include the optional octets of the RLC/MAC control header |
| 1432 | block->RRBP = 0x0; // N+13 |
| 1433 | block->SP = poll; // RRBP field is valid |
| 1434 | block->USF = 0x0; // Uplink state flag |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1435 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1436 | block->u.Packet_Downlink_Assignment.MESSAGE_TYPE = 0x2; // Packet Downlink Assignment |
| 1437 | block->u.Packet_Downlink_Assignment.PAGE_MODE = 0x0; // Normal Paging |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1438 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1439 | block->u.Packet_Downlink_Assignment.Exist_PERSISTENCE_LEVEL = 0x0; // PERSISTENCE_LEVEL: off |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1440 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1441 | block->u.Packet_Downlink_Assignment.ID.UnionType = 0x0; // TFI = on |
| 1442 | block->u.Packet_Downlink_Assignment.ID.u.Global_TFI.UnionType = old_downlink; // 0=UPLINK TFI, 1=DL TFI |
| 1443 | block->u.Packet_Downlink_Assignment.ID.u.Global_TFI.u.UPLINK_TFI = old_tfi; // TFI |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1444 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1445 | block->u.Packet_Downlink_Assignment.MAC_MODE = 0x0; // Dynamic Allocation |
| 1446 | block->u.Packet_Downlink_Assignment.RLC_MODE = 0x0; // RLC acknowledged mode |
| 1447 | block->u.Packet_Downlink_Assignment.CONTROL_ACK = old_downlink; // NW establishes no new DL TBF for the MS with running timer T3192 |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1448 | block->u.Packet_Downlink_Assignment.TIMESLOT_ALLOCATION = 0; // timeslot(s) |
| 1449 | for (tn = 0; tn < 8; tn++) { |
| 1450 | if (tbf->pdch[tn]) |
| 1451 | block->u.Packet_Downlink_Assignment.TIMESLOT_ALLOCATION |= 0x80 >> tn; // timeslot(s) |
| 1452 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1453 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1454 | block->u.Packet_Downlink_Assignment.Packet_Timing_Advance.Exist_TIMING_ADVANCE_VALUE = 0x1; // TIMING_ADVANCE_VALUE = on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1455 | block->u.Packet_Downlink_Assignment.Packet_Timing_Advance.TIMING_ADVANCE_VALUE = tbf->ta; // TIMING_ADVANCE_VALUE |
Andreas Eversberg | afdd9e1 | 2012-10-07 17:08:55 +0200 | [diff] [blame] | 1456 | if (ta_idx < 0) { |
| 1457 | block->u.Packet_Downlink_Assignment.Packet_Timing_Advance.Exist_IndexAndtimeSlot = 0x0; // TIMING_ADVANCE_INDEX = off |
| 1458 | } else { |
| 1459 | block->u.Packet_Downlink_Assignment.Packet_Timing_Advance.Exist_IndexAndtimeSlot = 0x1; // TIMING_ADVANCE_INDEX = on |
| 1460 | block->u.Packet_Downlink_Assignment.Packet_Timing_Advance.TIMING_ADVANCE_INDEX = ta_idx; // TIMING_ADVANCE_INDEX |
| 1461 | block->u.Packet_Downlink_Assignment.Packet_Timing_Advance.TIMING_ADVANCE_TIMESLOT_NUMBER = ta_ts; // TIMING_ADVANCE_TS |
| 1462 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1463 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1464 | block->u.Packet_Downlink_Assignment.Exist_P0_and_BTS_PWR_CTRL_MODE = 0x0; // POWER CONTROL = off |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1465 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1466 | block->u.Packet_Downlink_Assignment.Exist_Frequency_Parameters = 0x1; // Frequency Parameters = on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1467 | block->u.Packet_Downlink_Assignment.Frequency_Parameters.TSC = tbf->tsc; // Training Sequence Code (TSC) |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1468 | block->u.Packet_Downlink_Assignment.Frequency_Parameters.UnionType = 0x0; // ARFCN = on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1469 | block->u.Packet_Downlink_Assignment.Frequency_Parameters.u.ARFCN = tbf->arfcn; // ARFCN |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1470 | |
| 1471 | block->u.Packet_Downlink_Assignment.Exist_DOWNLINK_TFI_ASSIGNMENT = 0x1; // DOWNLINK TFI ASSIGNMENT = on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1472 | block->u.Packet_Downlink_Assignment.DOWNLINK_TFI_ASSIGNMENT = tbf->tfi; // TFI |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1473 | |
| 1474 | block->u.Packet_Downlink_Assignment.Exist_Power_Control_Parameters = 0x1; // Power Control Parameters = on |
Andreas Eversberg | aafcbbb | 2012-09-27 09:20:45 +0200 | [diff] [blame] | 1475 | block->u.Packet_Downlink_Assignment.Power_Control_Parameters.ALPHA = alpha; // ALPHA |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1476 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1477 | for (tn = 0; tn < 8; tn++) |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 1478 | { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1479 | if (tbf->pdch[tn]) |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1480 | { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1481 | block->u.Packet_Downlink_Assignment.Power_Control_Parameters.Slot[tn].Exist = 0x1; // Slot[i] = on |
Andreas Eversberg | aafcbbb | 2012-09-27 09:20:45 +0200 | [diff] [blame] | 1482 | block->u.Packet_Downlink_Assignment.Power_Control_Parameters.Slot[tn].GAMMA_TN = gamma; // GAMMA_TN |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1483 | } |
| 1484 | else |
| 1485 | { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1486 | block->u.Packet_Downlink_Assignment.Power_Control_Parameters.Slot[tn].Exist = 0x0; // Slot[i] = off |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1487 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1488 | } |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 1489 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1490 | block->u.Packet_Downlink_Assignment.Exist_TBF_Starting_Time = 0x0; // TBF Starting TIME = off |
| 1491 | block->u.Packet_Downlink_Assignment.Exist_Measurement_Mapping = 0x0; // Measurement_Mapping = off |
| 1492 | block->u.Packet_Downlink_Assignment.Exist_AdditionsR99 = 0x0; // AdditionsR99 = off |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1493 | } |
| 1494 | |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 1495 | /* generate paging request */ |
| 1496 | int write_paging_request(bitvec * dest, uint8_t *ptmsi, uint16_t ptmsi_len) |
| 1497 | { |
| 1498 | unsigned wp = 0; |
| 1499 | int plen; |
| 1500 | |
| 1501 | bitvec_write_field(dest, wp,0x0,4); // Skip Indicator |
| 1502 | bitvec_write_field(dest, wp,0x6,4); // Protocol Discriminator |
| 1503 | bitvec_write_field(dest, wp,0x21,8); // Paging Request Message Type |
| 1504 | |
| 1505 | bitvec_write_field(dest, wp,0x0,4); // Page Mode |
| 1506 | bitvec_write_field(dest, wp,0x0,4); // Channel Needed |
| 1507 | |
| 1508 | // Mobile Identity |
| 1509 | bitvec_write_field(dest, wp,ptmsi_len+1,8); // Mobile Identity length |
| 1510 | bitvec_write_field(dest, wp,0xf,4); // unused |
| 1511 | bitvec_write_field(dest, wp,0x4,4); // PTMSI type |
| 1512 | for (int i = 0; i < ptmsi_len; i++) |
| 1513 | { |
| 1514 | bitvec_write_field(dest, wp,ptmsi[i],8); // PTMSI |
| 1515 | } |
| 1516 | if ((wp % 8)) { |
| 1517 | LOGP(DRLCMACUL, LOGL_ERROR, "Length of PAG.REQ without rest " |
| 1518 | "octets is not multiple of 8 bits, PLEASE FIX!\n"); |
| 1519 | exit (0); |
| 1520 | } |
| 1521 | plen = wp / 8; |
| 1522 | bitvec_write_field(dest, wp,0x0,1); // "L" NLN(PCH) = off |
| 1523 | bitvec_write_field(dest, wp,0x0,1); // "L" Priority1 = off |
| 1524 | bitvec_write_field(dest, wp,0x1,1); // "L" Priority2 = off |
| 1525 | bitvec_write_field(dest, wp,0x0,1); // "L" Group Call information = off |
| 1526 | bitvec_write_field(dest, wp,0x0,1); // "H" Packet Page Indication 1 = packet paging procedure |
| 1527 | bitvec_write_field(dest, wp,0x1,1); // "H" Packet Page Indication 2 = packet paging procedure |
| 1528 | |
| 1529 | return plen; |
| 1530 | } |
| 1531 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1532 | /* generate uplink ack */ |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1533 | void write_packet_uplink_ack(RlcMacDownlink_t * block, struct gprs_rlcmac_tbf *tbf, |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1534 | uint8_t final) |
| 1535 | { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1536 | // Packet Uplink Ack/Nack TS 44.060 11.2.28 |
| 1537 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1538 | char show_v_n[65]; |
| 1539 | |
Andreas Eversberg | ab18bab | 2012-07-15 16:34:07 +0200 | [diff] [blame] | 1540 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1541 | uint8_t rbb = 0; |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1542 | uint16_t i, bbn; |
| 1543 | uint16_t mod_sns_half = (tbf->sns >> 1) - 1; |
| 1544 | char bit; |
| 1545 | |
| 1546 | LOGP(DRLCMACUL, LOGL_DEBUG, "Sending Ack/Nack for TBF=%d " |
| 1547 | "(final=%d)\n", tbf->tfi, final); |
| 1548 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1549 | block->PAYLOAD_TYPE = 0x1; // RLC/MAC control block that does not include the optional octets of the RLC/MAC control header |
| 1550 | block->RRBP = 0x0; // N+13 |
| 1551 | block->SP = final; // RRBP field is valid, if it is final ack |
| 1552 | block->USF = 0x0; // Uplink state flag |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1553 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1554 | block->u.Packet_Uplink_Ack_Nack.MESSAGE_TYPE = 0x9; // Packet Downlink Assignment |
| 1555 | block->u.Packet_Uplink_Ack_Nack.PAGE_MODE = 0x0; // Normal Paging |
| 1556 | block->u.Packet_Uplink_Ack_Nack.UPLINK_TFI = tbf->tfi; // Uplink TFI |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1557 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1558 | block->u.Packet_Uplink_Ack_Nack.UnionType = 0x0; // PU_AckNack_GPRS = on |
Andreas Eversberg | 499ff41 | 2012-10-03 14:21:36 +0200 | [diff] [blame] | 1559 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.CHANNEL_CODING_COMMAND = bts->initial_cs_ul - 1; // CS1 |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1560 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Ack_Nack_Description.FINAL_ACK_INDICATION = final; // FINAL ACK INDICATION |
| 1561 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Ack_Nack_Description.STARTING_SEQUENCE_NUMBER = tbf->dir.ul.v_r; // STARTING_SEQUENCE_NUMBER |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1562 | // RECEIVE_BLOCK_BITMAP |
| 1563 | for (i = 0, bbn = (tbf->dir.ul.v_r - 64) & mod_sns_half; i < 64; |
| 1564 | i++, bbn = (bbn + 1) & mod_sns_half) { |
| 1565 | bit = tbf->dir.ul.v_n[bbn]; |
| 1566 | if (bit == 0) |
| 1567 | bit = ' '; |
| 1568 | show_v_n[i] = bit; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1569 | if (bit == 'R') |
| 1570 | rbb = (rbb << 1)|1; |
| 1571 | else |
| 1572 | rbb = (rbb << 1); |
| 1573 | if((i%8) == 7) |
| 1574 | { |
| 1575 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Ack_Nack_Description.RECEIVED_BLOCK_BITMAP[i/8] = rbb; |
| 1576 | rbb = 0; |
| 1577 | } |
Ivan Kluchnikov | e359423 | 2012-06-07 01:12:29 +0400 | [diff] [blame] | 1578 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1579 | show_v_n[64] = '\0'; |
| 1580 | LOGP(DRLCMACUL, LOGL_DEBUG, "- V(N): \"%s\" R=Received " |
| 1581 | "N=Not-Received\n", show_v_n); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1582 | |
| 1583 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.UnionType = 0x0; // Fixed Allocation Dummy = on |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 1584 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.u.FixedAllocationDummy = 0x0; // Fixed Allocation Dummy |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1585 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Exist_AdditionsR99 = 0x0; // AdditionsR99 = off |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 1586 | |
| 1587 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.Exist_CONTENTION_RESOLUTION_TLLI = 0x1; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1588 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.CONTENTION_RESOLUTION_TLLI = tbf->tlli; |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 1589 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.Exist_Packet_Timing_Advance = 0x0; |
| 1590 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.Exist_Extension_Bits = 0x0; |
| 1591 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.Exist_Power_Control_Parameters = 0x0; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1592 | } |
| 1593 | |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1594 | unsigned write_packet_paging_request(bitvec * dest) |
| 1595 | { |
| 1596 | unsigned wp = 0; |
| 1597 | |
| 1598 | bitvec_write_field(dest, wp,0x1,2); // Payload Type |
| 1599 | bitvec_write_field(dest, wp,0x0,3); // No polling |
| 1600 | bitvec_write_field(dest, wp,0x0,3); // Uplink state flag |
| 1601 | bitvec_write_field(dest, wp,0x22,6); // MESSAGE TYPE |
| 1602 | |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1603 | bitvec_write_field(dest, wp,0x0,2); // Page Mode |
| 1604 | |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1605 | bitvec_write_field(dest, wp,0x0,1); // No PERSISTENCE_LEVEL |
| 1606 | bitvec_write_field(dest, wp,0x0,1); // No NLN |
| 1607 | |
| 1608 | return wp; |
| 1609 | } |
| 1610 | |
| 1611 | unsigned write_repeated_page_info(bitvec * dest, unsigned& wp, uint8_t len, |
| 1612 | uint8_t *identity, uint8_t chan_needed) |
| 1613 | { |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1614 | bitvec_write_field(dest, wp,0x1,1); // Repeated Page info exists |
| 1615 | |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1616 | bitvec_write_field(dest, wp,0x1,1); // RR connection paging |
| 1617 | |
| 1618 | if ((identity[0] & 0x07) == 4) { |
| 1619 | bitvec_write_field(dest, wp,0x0,1); // TMSI |
| 1620 | identity++; |
| 1621 | len--; |
| 1622 | } else { |
| 1623 | bitvec_write_field(dest, wp,0x0,1); // MI |
| 1624 | bitvec_write_field(dest, wp,len,4); // MI len |
| 1625 | } |
| 1626 | while (len) { |
| 1627 | bitvec_write_field(dest, wp,*identity++,8); // MI data |
| 1628 | len--; |
| 1629 | } |
| 1630 | bitvec_write_field(dest, wp,chan_needed,2); // CHANNEL_NEEDED |
| 1631 | bitvec_write_field(dest, wp,0x0,1); // No eMLPP_PRIORITY |
| 1632 | |
| 1633 | return wp; |
| 1634 | } |
| 1635 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1636 | /* Send Uplink unit-data to SGSN. */ |
Andreas Eversberg | 3e372d5 | 2012-07-06 09:28:15 +0200 | [diff] [blame] | 1637 | int gprs_rlcmac_tx_ul_ud(gprs_rlcmac_tbf *tbf) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1638 | { |
Andreas Eversberg | 9a91346 | 2012-09-23 06:42:38 +0200 | [diff] [blame] | 1639 | uint8_t qos_profile[3]; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1640 | struct msgb *llc_pdu; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 1641 | unsigned msg_len = NS_HDR_LEN + BSSGP_HDR_LEN + tbf->llc_index; |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 1642 | struct bssgp_bvc_ctx *bctx = gprs_bssgp_pcu_current_bctx(); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1643 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1644 | LOGP(DBSSGP, LOGL_INFO, "LLC [PCU -> SGSN] TFI: %u TLLI: 0x%08x len=%d\n", tbf->tfi, tbf->tlli, tbf->llc_index); |
Andreas Eversberg | 3e372d5 | 2012-07-06 09:28:15 +0200 | [diff] [blame] | 1645 | if (!bctx) { |
| 1646 | LOGP(DBSSGP, LOGL_ERROR, "No bctx\n"); |
| 1647 | return -EIO; |
| 1648 | } |
Ivan Kluchnikov | c320d86 | 2012-03-18 15:04:48 +0400 | [diff] [blame] | 1649 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1650 | llc_pdu = msgb_alloc_headroom(msg_len, msg_len,"llc_pdu"); |
Andreas Eversberg | 9a91346 | 2012-09-23 06:42:38 +0200 | [diff] [blame] | 1651 | uint8_t *buf = msgb_push(llc_pdu, TL16V_GROSS_LEN(sizeof(uint8_t)*tbf->llc_index)); |
| 1652 | tl16v_put(buf, BSSGP_IE_LLC_PDU, sizeof(uint8_t)*tbf->llc_index, tbf->llc_frame); |
| 1653 | qos_profile[0] = QOS_PROFILE >> 16; |
| 1654 | qos_profile[1] = QOS_PROFILE >> 8; |
| 1655 | qos_profile[2] = QOS_PROFILE; |
| 1656 | bssgp_tx_ul_ud(bctx, tbf->tlli, qos_profile, llc_pdu); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1657 | |
Andreas Eversberg | 3e372d5 | 2012-07-06 09:28:15 +0200 | [diff] [blame] | 1658 | return 0; |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1659 | } |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 1660 | |
| 1661 | int gprs_rlcmac_paging_request(uint8_t *ptmsi, uint16_t ptmsi_len, |
| 1662 | const char *imsi) |
| 1663 | { |
| 1664 | LOGP(DRLCMAC, LOGL_NOTICE, "TX: [PCU -> BTS] Paging Request (CCCH)\n"); |
| 1665 | bitvec *paging_request = bitvec_alloc(23); |
| 1666 | bitvec_unhex(paging_request, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
| 1667 | int plen = write_paging_request(paging_request, ptmsi, ptmsi_len); |
| 1668 | pcu_l1if_tx_pch(paging_request, plen, (char *)imsi); |
| 1669 | bitvec_free(paging_request); |
| 1670 | |
| 1671 | return 0; |
| 1672 | } |
Andreas Eversberg | a004e6a | 2013-05-13 16:45:21 +0200 | [diff] [blame] | 1673 | |
| 1674 | |
| 1675 | /* |
| 1676 | * timing advance memory |
| 1677 | */ |
| 1678 | |
| 1679 | /* enable to debug timing advance memory */ |
| 1680 | //#define DEBUG_TA |
| 1681 | |
| 1682 | static LLIST_HEAD(gprs_rlcmac_ta_list); |
| 1683 | static int gprs_rlcmac_ta_num = 0; |
| 1684 | |
| 1685 | struct gprs_rlcmac_ta { |
| 1686 | struct llist_head list; |
| 1687 | uint32_t tlli; |
| 1688 | uint8_t ta; |
| 1689 | }; |
| 1690 | |
| 1691 | /* remember timing advance of a given TLLI */ |
| 1692 | int remember_timing_advance(uint32_t tlli, uint8_t ta) |
| 1693 | { |
| 1694 | struct gprs_rlcmac_ta *ta_entry; |
| 1695 | |
| 1696 | /* check for existing entry */ |
| 1697 | llist_for_each_entry(ta_entry, &gprs_rlcmac_ta_list, list) { |
| 1698 | if (ta_entry->tlli == tlli) { |
| 1699 | #ifdef DEBUG_TA |
| 1700 | fprintf(stderr, "update %08x %d\n", tlli, ta); |
| 1701 | #endif |
| 1702 | ta_entry->ta = ta; |
| 1703 | /* relink to end of list */ |
| 1704 | llist_del(&ta_entry->list); |
| 1705 | llist_add_tail(&ta_entry->list, &gprs_rlcmac_ta_list); |
| 1706 | return 0; |
| 1707 | } |
| 1708 | } |
| 1709 | |
| 1710 | #ifdef DEBUG_TA |
| 1711 | fprintf(stderr, "remember %08x %d\n", tlli, ta); |
| 1712 | #endif |
| 1713 | /* if list is full, remove oldest entry */ |
| 1714 | if (gprs_rlcmac_ta_num == 30) { |
| 1715 | ta_entry = llist_entry(gprs_rlcmac_ta_list.next, |
| 1716 | struct gprs_rlcmac_ta, list); |
| 1717 | llist_del(&ta_entry->list); |
| 1718 | talloc_free(ta_entry); |
| 1719 | gprs_rlcmac_ta_num--; |
| 1720 | } |
| 1721 | |
| 1722 | /* create new TA entry */ |
| 1723 | ta_entry = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_ta); |
| 1724 | if (!ta_entry) |
| 1725 | return -ENOMEM; |
| 1726 | |
| 1727 | ta_entry->tlli = tlli; |
| 1728 | ta_entry->ta = ta; |
| 1729 | llist_add_tail(&ta_entry->list, &gprs_rlcmac_ta_list); |
| 1730 | gprs_rlcmac_ta_num++; |
| 1731 | |
| 1732 | return 0; |
| 1733 | } |
| 1734 | |
| 1735 | int recall_timing_advance(uint32_t tlli) |
| 1736 | { |
| 1737 | struct gprs_rlcmac_ta *ta_entry; |
| 1738 | uint8_t ta; |
| 1739 | |
| 1740 | llist_for_each_entry(ta_entry, &gprs_rlcmac_ta_list, list) { |
| 1741 | if (ta_entry->tlli == tlli) { |
| 1742 | ta = ta_entry->ta; |
| 1743 | #ifdef DEBUG_TA |
| 1744 | fprintf(stderr, "recall %08x %d\n", tlli, ta); |
| 1745 | #endif |
| 1746 | return ta; |
| 1747 | } |
| 1748 | } |
| 1749 | #ifdef DEBUG_TA |
| 1750 | fprintf(stderr, "no entry for %08x\n", tlli); |
| 1751 | #endif |
| 1752 | |
| 1753 | return -EINVAL; |
| 1754 | } |
| 1755 | |
| 1756 | int flush_timing_advance(void) |
| 1757 | { |
| 1758 | struct gprs_rlcmac_ta *ta_entry; |
| 1759 | int count = 0; |
| 1760 | |
| 1761 | while (!llist_empty(&gprs_rlcmac_ta_list)) { |
| 1762 | ta_entry = llist_entry(gprs_rlcmac_ta_list.next, |
| 1763 | struct gprs_rlcmac_ta, list); |
| 1764 | #ifdef DEBUG_TA |
| 1765 | fprintf(stderr, "flush entry %08x %d\n", ta_entry->tlli, |
| 1766 | ta_entry->ta); |
| 1767 | #endif |
| 1768 | llist_del(&ta_entry->list); |
| 1769 | talloc_free(ta_entry); |
| 1770 | count++; |
| 1771 | } |
| 1772 | gprs_rlcmac_ta_num = 0; |
| 1773 | |
| 1774 | return count; |
| 1775 | } |
| 1776 | |