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> |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version 2 |
| 9 | * of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | #include <gprs_bssgp_pcu.h> |
| 22 | #include <pcu_l1_if.h> |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 23 | #include <gprs_rlcmac.h> |
| 24 | |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 25 | /* 3GPP TS 05.02 Annex B.1 */ |
| 26 | |
| 27 | #define MS_NA 255 /* N/A */ |
| 28 | #define MS_A 254 /* 1 with hopping, 0 without */ |
| 29 | #define MS_B 253 /* 1 with hopping, 0 without (change Rx to Tx)*/ |
| 30 | #define MS_C 252 /* 1 with hopping, 0 without (change Tx to Rx)*/ |
| 31 | |
| 32 | struct gprs_ms_multislot_class { |
| 33 | uint8_t rx, tx, sum; /* Maximum Number of Slots: RX, Tx, Sum Rx+Tx */ |
| 34 | uint8_t ta, tb, ra, rb; /* Minimum Number of Slots */ |
| 35 | uint8_t type; /* Type of Mobile */ |
| 36 | }; |
| 37 | |
| 38 | struct gprs_ms_multislot_class gprs_ms_multislot_class[32] = { |
| 39 | /* M-S Class Rx Tx Sum Tta Ttb Tra Trb Type */ |
| 40 | /* N/A */ { MS_NA,MS_NA, MS_NA, MS_NA, MS_NA, MS_NA, MS_NA, MS_NA }, |
| 41 | /* 1 */ { 1, 1, 2, 3, 2, 4, 2, 1 }, |
| 42 | /* 2 */ { 2, 1, 3, 3, 2, 3, 1, 1 }, |
| 43 | /* 3 */ { 2, 2, 3, 3, 2, 3, 1, 1 }, |
| 44 | /* 4 */ { 3, 1, 4, 3, 1, 3, 1, 1 }, |
| 45 | /* 5 */ { 2, 2, 4, 3, 1, 3, 1, 1 }, |
| 46 | /* 6 */ { 3, 2, 4, 3, 1, 3, 1, 1 }, |
| 47 | /* 7 */ { 3, 3, 4, 3, 1, 3, 1, 1 }, |
| 48 | /* 8 */ { 4, 1, 5, 3, 1, 2, 1, 1 }, |
| 49 | /* 9 */ { 3, 2, 5, 3, 1, 2, 1, 1 }, |
| 50 | /* 10 */ { 4, 2, 5, 3, 1, 2, 1, 1 }, |
| 51 | /* 11 */ { 4, 3, 5, 3, 1, 2, 1, 1 }, |
| 52 | /* 12 */ { 4, 4, 5, 2, 1, 2, 1, 1 }, |
| 53 | /* 13 */ { 3, 3, MS_NA, MS_NA, MS_A, 3, MS_A, 2 }, |
| 54 | /* 14 */ { 4, 4, MS_NA, MS_NA, MS_A, 3, MS_A, 2 }, |
| 55 | /* 15 */ { 5, 5, MS_NA, MS_NA, MS_A, 3, MS_A, 2 }, |
| 56 | /* 16 */ { 6, 6, MS_NA, MS_NA, MS_A, 2, MS_A, 2 }, |
| 57 | /* 17 */ { 7, 7, MS_NA, MS_NA, MS_A, 1, 0, 2 }, |
| 58 | /* 18 */ { 8, 8, MS_NA, MS_NA, 0, 0, 0, 2 }, |
| 59 | /* 19 */ { 6, 2, MS_NA, 3, MS_B, 2, MS_C, 1 }, |
| 60 | /* 20 */ { 6, 3, MS_NA, 3, MS_B, 2, MS_C, 1 }, |
| 61 | /* 21 */ { 6, 4, MS_NA, 3, MS_B, 2, MS_C, 1 }, |
| 62 | /* 22 */ { 6, 4, MS_NA, 2, MS_B, 2, MS_C, 1 }, |
| 63 | /* 23 */ { 6, 6, MS_NA, 2, MS_B, 2, MS_C, 1 }, |
| 64 | /* 24 */ { 8, 2, MS_NA, 3, MS_B, 2, MS_C, 1 }, |
| 65 | /* 25 */ { 8, 3, MS_NA, 3, MS_B, 2, MS_C, 1 }, |
| 66 | /* 26 */ { 8, 4, MS_NA, 3, MS_B, 2, MS_C, 1 }, |
| 67 | /* 27 */ { 8, 4, MS_NA, 2, MS_B, 2, MS_C, 1 }, |
| 68 | /* 28 */ { 8, 6, MS_NA, 2, MS_B, 2, MS_C, 1 }, |
| 69 | /* 29 */ { 8, 8, MS_NA, 2, MS_B, 2, MS_C, 1 }, |
| 70 | /* N/A */ { MS_NA,MS_NA, MS_NA, MS_NA, MS_NA, MS_NA, MS_NA, MS_NA }, |
| 71 | /* N/A */ { MS_NA,MS_NA, MS_NA, MS_NA, MS_NA, MS_NA, MS_NA, MS_NA }, |
| 72 | }; |
| 73 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 74 | LLIST_HEAD(gprs_rlcmac_ul_tbfs); |
| 75 | LLIST_HEAD(gprs_rlcmac_dl_tbfs); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 76 | llist_head *gprs_rlcmac_tbfs_lists[] = { |
| 77 | &gprs_rlcmac_ul_tbfs, |
| 78 | &gprs_rlcmac_dl_tbfs, |
| 79 | NULL |
| 80 | }; |
Andreas Eversberg | 6681bb8 | 2012-07-25 08:48:44 +0200 | [diff] [blame] | 81 | extern void *tall_pcu_ctx; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 82 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 83 | /* FIXME: spread ressources over multiple TRX. Also add option to use same |
| 84 | * TRX in case of existing TBF for TLLI in the other direction. */ |
| 85 | /* search for free TFI and return TFI, TRX and first TS */ |
| 86 | int tfi_alloc(enum gprs_rlcmac_tbf_direction dir, uint8_t *_trx, uint8_t *_ts, |
Andreas Eversberg | 309ce74 | 2012-08-07 15:31:16 +0200 | [diff] [blame] | 87 | int8_t use_trx, int8_t first_ts) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 88 | { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 89 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| 90 | struct gprs_rlcmac_pdch *pdch; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 91 | struct gprs_rlcmac_tbf **tbfp; |
| 92 | uint8_t trx_from, trx_to, trx, ts, tfi; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 93 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 94 | if (use_trx >= 0 && use_trx < 8) |
| 95 | trx_from = trx_to = use_trx; |
| 96 | else { |
| 97 | trx_from = 0; |
| 98 | trx_to = 7; |
| 99 | } |
| 100 | if (first_ts < 0 || first_ts >= 8) |
| 101 | first_ts = 0; |
| 102 | |
| 103 | /* on TRX find first enabled TS */ |
| 104 | for (trx = trx_from; trx <= trx_to; trx++) { |
| 105 | for (ts = first_ts; ts < 8; ts++) { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 106 | pdch = &bts->trx[trx].pdch[ts]; |
| 107 | if (!pdch->enable) |
| 108 | continue; |
| 109 | break; |
| 110 | } |
| 111 | if (ts < 8) |
| 112 | break; |
| 113 | } |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 114 | if (trx > trx_to) { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 115 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH available.\n"); |
| 116 | return -EINVAL; |
| 117 | } |
| 118 | |
| 119 | |
| 120 | LOGP(DRLCMAC, LOGL_DEBUG, "Searching for first unallocated TFI: " |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 121 | "TRX=%d first TS=%d\n", trx, ts); |
| 122 | if (dir == GPRS_RLCMAC_UL_TBF) |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 123 | tbfp = bts->trx[trx].ul_tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 124 | else |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 125 | tbfp = bts->trx[trx].dl_tbf; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 126 | for (tfi = 0; tfi < 32; tfi++) { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 127 | if (!tbfp[tfi]) |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 128 | break; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 129 | } |
| 130 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 131 | if (tfi < 32) { |
| 132 | LOGP(DRLCMAC, LOGL_DEBUG, " Found TFI=%d.\n", tfi); |
| 133 | *_trx = trx; |
| 134 | *_ts = ts; |
| 135 | return tfi; |
| 136 | } |
| 137 | LOGP(DRLCMAC, LOGL_NOTICE, "No TFI available.\n"); |
| 138 | |
| 139 | return -1; |
| 140 | } |
| 141 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 142 | 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] | 143 | { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 144 | struct gprs_rlcmac_tbf *tbf; |
| 145 | uint8_t usf_map = 0; |
| 146 | uint8_t tfi, usf; |
| 147 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 148 | /* make map of used USF */ |
| 149 | for (tfi = 0; tfi < 32; tfi++) { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 150 | tbf = pdch->ul_tbf[tfi]; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 151 | if (!tbf) |
| 152 | continue; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 153 | usf_map |= (1 << tbf->dir.ul.usf[ts]); |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | /* look for USF, don't use USF=7 */ |
| 157 | for (usf = 0; usf < 7; usf++) { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 158 | if (!(usf_map & (1 << usf))) |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 159 | return usf; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 160 | } |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 161 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 162 | return -1; |
| 163 | } |
| 164 | |
| 165 | /* lookup TBF Entity (by TFI) */ |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 166 | struct gprs_rlcmac_tbf *tbf_by_tfi(uint8_t tfi, uint8_t trx, |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 167 | enum gprs_rlcmac_tbf_direction dir) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 168 | { |
| 169 | struct gprs_rlcmac_tbf *tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 170 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 171 | |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 172 | if (tfi >= 32 || trx >= 8) |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 173 | return NULL; |
| 174 | |
| 175 | if (dir == GPRS_RLCMAC_UL_TBF) |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 176 | tbf = bts->trx[trx].ul_tbf[tfi]; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 177 | else |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 178 | tbf = bts->trx[trx].dl_tbf[tfi]; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 179 | if (!tbf) |
| 180 | return NULL; |
| 181 | |
| 182 | if (tbf->state != GPRS_RLCMAC_RELEASING) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 183 | return tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 184 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 185 | return NULL; |
| 186 | } |
| 187 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 188 | /* search for active downlink or uplink tbf */ |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 189 | struct gprs_rlcmac_tbf *tbf_by_tlli(uint32_t tlli, |
| 190 | enum gprs_rlcmac_tbf_direction dir) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 191 | { |
| 192 | struct gprs_rlcmac_tbf *tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 193 | if (dir == GPRS_RLCMAC_UL_TBF) { |
| 194 | llist_for_each_entry(tbf, &gprs_rlcmac_ul_tbfs, list) { |
| 195 | if (tbf->state != GPRS_RLCMAC_RELEASING |
Andreas Eversberg | a9b9407 | 2012-07-15 19:30:41 +0200 | [diff] [blame] | 196 | && tbf->tlli == tlli && tbf->tlli_valid) |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 197 | return tbf; |
| 198 | } |
| 199 | } else { |
| 200 | llist_for_each_entry(tbf, &gprs_rlcmac_dl_tbfs, list) { |
| 201 | if (tbf->state != GPRS_RLCMAC_RELEASING |
| 202 | && tbf->tlli == tlli) |
| 203 | return tbf; |
| 204 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 205 | } |
| 206 | return NULL; |
| 207 | } |
| 208 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 209 | 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] | 210 | { |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 211 | struct gprs_rlcmac_tbf *tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 212 | |
| 213 | /* only one TBF can poll on specific TS/FN, because scheduler can only |
| 214 | * schedule one downlink control block (with polling) at a FN per TS */ |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 215 | llist_for_each_entry(tbf, &gprs_rlcmac_ul_tbfs, list) { |
| 216 | if (tbf->state != GPRS_RLCMAC_RELEASING |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 217 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 218 | && tbf->poll_fn == fn && tbf->trx == trx |
| 219 | && tbf->control_ts == ts) |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 220 | return tbf; |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 221 | } |
| 222 | llist_for_each_entry(tbf, &gprs_rlcmac_dl_tbfs, list) { |
| 223 | if (tbf->state != GPRS_RLCMAC_RELEASING |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 224 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 225 | && tbf->poll_fn == fn && tbf->trx == trx |
| 226 | && tbf->control_ts == ts) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 227 | return tbf; |
| 228 | } |
| 229 | return NULL; |
| 230 | } |
| 231 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 232 | struct gprs_rlcmac_tbf *tbf_alloc(struct gprs_rlcmac_tbf *old_tbf, |
| 233 | enum gprs_rlcmac_tbf_direction dir, uint8_t tfi, uint8_t trx, |
| 234 | uint8_t first_ts, uint8_t ms_class, uint8_t single_slot) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 235 | { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 236 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 237 | struct gprs_rlcmac_tbf *tbf; |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 238 | int rc; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 239 | |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 240 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF starts here **********\n"); |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 241 | LOGP(DRLCMAC, LOGL_INFO, "Allocating %s TBF: TFI=%d TRX=%d " |
| 242 | "MS_CLASS=%d\n", (dir == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
| 243 | tfi, trx, ms_class); |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 244 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 245 | if (trx >= 8 || first_ts >= 8 || tfi >= 32) |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 246 | return NULL; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 247 | |
Andreas Eversberg | 6681bb8 | 2012-07-25 08:48:44 +0200 | [diff] [blame] | 248 | tbf = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_tbf); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 249 | if (!tbf) |
| 250 | return NULL; |
| 251 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 252 | tbf->direction = dir; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 253 | tbf->tfi = tfi; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 254 | tbf->trx = trx; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 255 | tbf->arfcn = bts->trx[trx].arfcn; |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 256 | tbf->first_ts = first_ts; |
| 257 | tbf->ms_class = ms_class; |
| 258 | tbf->ws = 64; |
| 259 | tbf->sns = 128; |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 260 | /* select algorithm A in case we don't have multislot class info */ |
| 261 | if (single_slot || ms_class == 0) |
| 262 | rc = alloc_algorithm_a(old_tbf, tbf, |
| 263 | bts->alloc_algorithm_curst); |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 264 | else |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 265 | rc = bts->alloc_algorithm(old_tbf, tbf, |
| 266 | bts->alloc_algorithm_curst); |
| 267 | /* if no ressource */ |
| 268 | if (rc < 0) { |
| 269 | talloc_free(tbf); |
| 270 | return NULL; |
| 271 | } |
| 272 | /* assign control ts */ |
| 273 | tbf->control_ts = 0xff; |
| 274 | rc = tbf_assign_control_ts(tbf); |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 275 | /* if no ressource */ |
| 276 | if (rc < 0) { |
| 277 | talloc_free(tbf); |
| 278 | return NULL; |
| 279 | } |
| 280 | |
Andreas Eversberg | b3ded4c | 2012-07-24 10:47:24 +0200 | [diff] [blame] | 281 | /* set timestamp */ |
| 282 | gettimeofday(&tbf->bw_tv, NULL); |
| 283 | |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 284 | INIT_LLIST_HEAD(&tbf->llc_queue); |
| 285 | if (dir == GPRS_RLCMAC_UL_TBF) |
| 286 | llist_add(&tbf->list, &gprs_rlcmac_ul_tbfs); |
| 287 | else |
| 288 | llist_add(&tbf->list, &gprs_rlcmac_dl_tbfs); |
| 289 | |
| 290 | return tbf; |
| 291 | } |
| 292 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 293 | /* Slot Allocation: Algorithm A |
| 294 | * |
| 295 | * Assign single slot for uplink and downlink |
| 296 | */ |
| 297 | int alloc_algorithm_a(struct gprs_rlcmac_tbf *old_tbf, |
| 298 | struct gprs_rlcmac_tbf *tbf, uint32_t cust) |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 299 | { |
| 300 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| 301 | struct gprs_rlcmac_pdch *pdch; |
| 302 | uint8_t ts = tbf->first_ts; |
| 303 | int8_t usf; /* must be signed */ |
| 304 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 305 | LOGP(DRLCMAC, LOGL_DEBUG, "Slot Allocation (Algorithm A) for class " |
| 306 | "%d\n", tbf->ms_class); |
| 307 | |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 308 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
| 309 | if (!pdch->enable) { |
| 310 | LOGP(DRLCMAC, LOGL_ERROR, "TS=%d not enabled.", ts); |
| 311 | return -EIO; |
| 312 | } |
| 313 | tbf->tsc = pdch->tsc; |
| 314 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 315 | /* if USF available */ |
| 316 | usf = find_free_usf(pdch, ts); |
| 317 | if (usf >= 0) { |
| 318 | LOGP(DRLCMAC, LOGL_DEBUG, "- Assign uplink " |
| 319 | "TS=%d USF=%d\n", ts, usf); |
| 320 | bts->trx[tbf->trx].ul_tbf[tbf->tfi] = tbf; |
| 321 | pdch->ul_tbf[tbf->tfi] = tbf; |
| 322 | tbf->pdch[ts] = pdch; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 323 | } else { |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 324 | LOGP(DRLCMAC, LOGL_NOTICE, "- Failed " |
| 325 | "allocating TS=%d, no USF available\n", ts); |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 326 | return -EBUSY; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 327 | } |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 328 | } else { |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 329 | LOGP(DRLCMAC, LOGL_DEBUG, "- Assign downlink TS=%d\n", ts); |
| 330 | bts->trx[tbf->trx].dl_tbf[tbf->tfi] = tbf; |
| 331 | pdch->dl_tbf[tbf->tfi] = tbf; |
| 332 | tbf->pdch[ts] = pdch; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 333 | } |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 334 | /* the only one TS is the common TS */ |
| 335 | tbf->first_common_ts = ts; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 336 | |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 337 | return 0; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 338 | } |
| 339 | |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 340 | /* Slot Allocation: Algorithm B |
| 341 | * |
| 342 | * Assign as many downlink slots as possible. |
| 343 | * Assign one uplink slot. (With free USF) |
| 344 | * |
| 345 | */ |
| 346 | int alloc_algorithm_b(struct gprs_rlcmac_tbf *old_tbf, |
| 347 | struct gprs_rlcmac_tbf *tbf, uint32_t cust) |
| 348 | { |
| 349 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| 350 | struct gprs_rlcmac_pdch *pdch; |
| 351 | struct gprs_ms_multislot_class *ms_class; |
| 352 | uint8_t Rx, Tx, Sum; /* Maximum Number of Slots: RX, Tx, Sum Rx+Tx */ |
| 353 | uint8_t Tta, Ttb, Tra, Trb, Tt, Tr; /* Minimum Number of Slots */ |
| 354 | uint8_t Type; /* Type of Mobile */ |
| 355 | uint8_t rx_win_min, rx_win_max; |
| 356 | uint8_t tx_win_min, tx_win_max, tx_range; |
| 357 | uint8_t rx_window = 0, tx_window = 0; |
| 358 | 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] | 359 | 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] | 360 | int8_t tsc = -1; /* must be signed */ |
| 361 | uint8_t i, ts; |
| 362 | |
| 363 | LOGP(DRLCMAC, LOGL_DEBUG, "Slot Allocation (Algorithm B) for class " |
| 364 | "%d\n", tbf->ms_class); |
| 365 | |
| 366 | if (tbf->ms_class >= 32) { |
| 367 | LOGP(DRLCMAC, LOGL_ERROR, "Multislot class %d out of range.\n", |
| 368 | tbf->ms_class); |
| 369 | return -EINVAL; |
| 370 | } |
| 371 | |
| 372 | ms_class = &gprs_ms_multislot_class[tbf->ms_class]; |
| 373 | if (ms_class->tx == MS_NA) { |
| 374 | LOGP(DRLCMAC, LOGL_NOTICE, "Multislot class %d not " |
| 375 | "applicable.\n", tbf->ms_class); |
| 376 | return -EINVAL; |
| 377 | } |
| 378 | |
| 379 | Rx = ms_class->rx; |
| 380 | Tx = ms_class->tx; |
| 381 | Sum = ms_class->sum; |
| 382 | Tta = ms_class->ta; |
| 383 | Ttb = ms_class->tb; |
| 384 | Tra = ms_class->ra; |
| 385 | Trb = ms_class->rb; |
| 386 | Type = ms_class->type; |
| 387 | |
| 388 | /* Tta and Ttb may depend on hopping or frequency change */ |
| 389 | if (Ttb == MS_A) { |
| 390 | if (/* FIXME: hopping*/ 0) |
| 391 | Ttb = 1; |
| 392 | else |
| 393 | Ttb = 0; |
| 394 | } |
| 395 | if (Trb == MS_A) { |
| 396 | if (/* FIXME: hopping*/ 0) |
| 397 | Ttb = 1; |
| 398 | else |
| 399 | Ttb = 0; |
| 400 | } |
| 401 | if (Ttb == MS_B) { |
| 402 | /* FIXME: or frequency change */ |
| 403 | if (/* FIXME: hopping*/ 0) |
| 404 | Ttb = 1; |
| 405 | else |
| 406 | Ttb = 0; |
| 407 | } |
| 408 | if (Trb == MS_C) { |
| 409 | /* FIXME: or frequency change */ |
| 410 | if (/* FIXME: hopping*/ 0) |
| 411 | Ttb = 1; |
| 412 | else |
| 413 | Ttb = 0; |
| 414 | } |
| 415 | |
| 416 | LOGP(DRLCMAC, LOGL_DEBUG, "- Rx=%d Tx=%d Sum Rx+Tx=%s Tta=%s Ttb=%d " |
| 417 | " Tra=%d Trb=%d Type=%d\n", Rx, Tx, |
| 418 | (Sum == MS_NA) ? "N/A" : digit[Sum], |
| 419 | (Tta == MS_NA) ? "N/A" : digit[Tta], Ttb, Tra, Trb, Type); |
| 420 | |
| 421 | /* select the values for time contraints */ |
| 422 | if (/* FIXME: monitoring */0) { |
| 423 | /* applicable to type 1 and type 2 */ |
| 424 | Tt = Ttb; |
| 425 | Tr = Tra; |
| 426 | } else { |
| 427 | /* applicable to type 1 and type 2 */ |
| 428 | Tt = Ttb; |
| 429 | Tr = Trb; |
| 430 | } |
| 431 | |
| 432 | /* select a window of Rx slots if available |
| 433 | * The maximum allowed slots depend on RX or the window of available |
| 434 | * slots. |
| 435 | * This must be done for uplink TBF also, because it is the basis |
| 436 | * for calculating control slot and uplink slot(s). */ |
| 437 | rx_win_min = rx_win_max = tbf->first_ts; |
| 438 | for (ts = tbf->first_ts, i = 0; ts < 8; ts++) { |
| 439 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
| 440 | /* check if enabled */ |
| 441 | if (!pdch->enable) { |
| 442 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, because " |
| 443 | "not enabled\n", ts); |
| 444 | /* increase window for Type 1 */ |
| 445 | if (Type == 1) |
| 446 | i++; |
| 447 | continue; |
| 448 | } |
| 449 | /* check if TSC changes */ |
| 450 | if (tsc < 0) |
| 451 | tbf->tsc = tsc = pdch->tsc; |
| 452 | else if (tsc != pdch->tsc) { |
| 453 | LOGP(DRLCMAC, LOGL_ERROR, "Skipping TS %d of TRX=%d, " |
| 454 | "because it has different TSC than lower TS " |
| 455 | "of TRX. In order to allow multislot, all " |
| 456 | "slots must be configured with the same " |
| 457 | "TSC!\n", ts, tbf->trx); |
| 458 | /* increase window for Type 1 */ |
| 459 | if (Type == 1) |
| 460 | i++; |
| 461 | continue; |
| 462 | } |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 463 | |
| 464 | rx_window |= (1 << ts); |
| 465 | LOGP(DRLCMAC, LOGL_DEBUG, "- Selected DL TS %d\n", ts); |
| 466 | |
| 467 | /* range of window (required for Type 1) */ |
| 468 | rx_win_max = ts; |
| 469 | |
| 470 | if (++i == Rx) { |
| 471 | LOGP(DRLCMAC, LOGL_DEBUG, "- Done, because slots / " |
| 472 | "window reached maximum alowed Rx size\n"); |
| 473 | break; |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | LOGP(DRLCMAC, LOGL_DEBUG, "- Selected slots for RX: " |
| 478 | "(TS=0)\"%c%c%c%c%c%c%c%c\"(TS=7)\n", |
| 479 | ((rx_window & 0x01)) ? 'D' : '.', |
| 480 | ((rx_window & 0x02)) ? 'D' : '.', |
| 481 | ((rx_window & 0x04)) ? 'D' : '.', |
| 482 | ((rx_window & 0x08)) ? 'D' : '.', |
| 483 | ((rx_window & 0x10)) ? 'D' : '.', |
| 484 | ((rx_window & 0x20)) ? 'D' : '.', |
| 485 | ((rx_window & 0x40)) ? 'D' : '.', |
| 486 | ((rx_window & 0x80)) ? 'D' : '.'); |
| 487 | |
| 488 | /* reduce window, if existing uplink slots collide RX window */ |
| 489 | if (Type == 1 && old_tbf && old_tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| 490 | uint8_t collide = 0, ul_usage = 0; |
| 491 | int j; |
| 492 | |
| 493 | /* calculate mask of colliding slots */ |
| 494 | for (ts = old_tbf->first_ts; ts < 8; ts++) { |
| 495 | if (old_tbf->pdch[ts]) { |
| 496 | ul_usage |= (1 << ts); |
| 497 | /* mark bits from TS-t .. TS+r */ |
| 498 | for (j = ts - Tt; j != ((ts + Tr + 1) & 7); |
| 499 | j = (j + 1) & 7) |
| 500 | collide |= (1 << j); |
| 501 | } |
| 502 | } |
| 503 | LOGP(DRLCMAC, LOGL_DEBUG, "- Not allowed slots due to existing " |
| 504 | "UL allocation: (TS=0)\"%c%c%c%c%c%c%c%c\"(TS=7) " |
| 505 | " D=downlink x=not usable\n", |
| 506 | ((ul_usage & 0x01)) ? 'D' : ((collide & 0x01))?'x':'.', |
| 507 | ((ul_usage & 0x02)) ? 'D' : ((collide & 0x02))?'x':'.', |
| 508 | ((ul_usage & 0x04)) ? 'D' : ((collide & 0x04))?'x':'.', |
| 509 | ((ul_usage & 0x08)) ? 'D' : ((collide & 0x08))?'x':'.', |
| 510 | ((ul_usage & 0x10)) ? 'D' : ((collide & 0x10))?'x':'.', |
| 511 | ((ul_usage & 0x20)) ? 'D' : ((collide & 0x20))?'x':'.', |
| 512 | ((ul_usage & 0x40)) ? 'D' : ((collide & 0x40))?'x':'.', |
| 513 | ((ul_usage & 0x80)) ? 'D' : ((collide & 0x80))?'x':'.'); |
| 514 | |
| 515 | /* apply massk to reduce tx_window (shifted by 3 slots) */ |
| 516 | rx_window &= ~(collide << 3); |
| 517 | rx_window &= ~(collide >> 5); |
| 518 | LOGP(DRLCMAC, LOGL_DEBUG, "- Remaining slots for RX: " |
| 519 | "(TS=0)\"%c%c%c%c%c%c%c%c\"(TS=7)\n", |
| 520 | ((rx_window & 0x01)) ? 'D' : '.', |
| 521 | ((rx_window & 0x02)) ? 'D' : '.', |
| 522 | ((rx_window & 0x04)) ? 'D' : '.', |
| 523 | ((rx_window & 0x08)) ? 'D' : '.', |
| 524 | ((rx_window & 0x10)) ? 'D' : '.', |
| 525 | ((rx_window & 0x20)) ? 'D' : '.', |
| 526 | ((rx_window & 0x40)) ? 'D' : '.', |
| 527 | ((rx_window & 0x80)) ? 'D' : '.'); |
| 528 | if (!rx_window) { |
| 529 | LOGP(DRLCMAC, LOGL_NOTICE, "No suitable downlink slots " |
| 530 | "available with current uplink assignment\n"); |
| 531 | return -EBUSY; |
| 532 | } |
| 533 | |
| 534 | /* calculate new min/max */ |
| 535 | for (ts = rx_win_min; ts <= rx_win_max; ts++) { |
| 536 | if ((rx_window & (1 << ts))) |
| 537 | break; |
| 538 | rx_win_min = ts + 1; |
Andreas Eversberg | 52c748c | 2012-07-15 16:33:02 +0200 | [diff] [blame] | 539 | LOGP(DRLCMAC, LOGL_DEBUG, "- TS has been deleted, so " |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 540 | "raising start of DL window to %d\n", |
| 541 | rx_win_min); |
| 542 | } |
| 543 | for (ts = rx_win_max; ts >= rx_win_min; ts--) { |
| 544 | if ((rx_window & (1 << ts))) |
| 545 | break; |
| 546 | rx_win_max = ts - 1; |
Andreas Eversberg | 52c748c | 2012-07-15 16:33:02 +0200 | [diff] [blame] | 547 | LOGP(DRLCMAC, LOGL_DEBUG, "- TS has been deleted, so " |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 548 | "lowering end of DL window to %d\n", |
| 549 | rx_win_max); |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | /* reduce window, to allow at least one uplink TX slot |
| 554 | * this is only required for Type 1 */ |
| 555 | if (Type == 1 && rx_win_max - rx_win_min + 1 + Tt + 1 + Tr > 8) { |
| 556 | rx_win_max = rx_win_min + 7 - Tr - 1 - Tr; |
| 557 | LOGP(DRLCMAC, LOGL_DEBUG, "- Reduce RX window due to time " |
| 558 | "contraints to %d slots\n", |
| 559 | rx_win_max - rx_win_min + 1); |
| 560 | } |
| 561 | |
| 562 | LOGP(DRLCMAC, LOGL_DEBUG, "- RX-Window is: %d..%d\n", rx_win_min, |
| 563 | rx_win_max); |
| 564 | |
| 565 | /* calculate TX window */ |
| 566 | if (Type == 1) { |
| 567 | /* calculate TX window (shifted by 3 timeslots) |
| 568 | * it uses the space between tx_win_max and tx_win_min */ |
| 569 | tx_win_min = (rx_win_max - 2 + Tt) & 7; |
| 570 | tx_win_max = (rx_win_min + 4 - Tr) & 7; |
| 571 | /* calculate the TX window size (might be larger than Tx) */ |
| 572 | tx_range = (tx_win_max - tx_win_min + 1) & 7; |
| 573 | } else { |
| 574 | /* TX and RX simultaniously */ |
| 575 | tx_win_min = rx_win_min; |
| 576 | tx_win_max = 7; |
| 577 | /* TX window size (might be larger than Tx) */ |
| 578 | tx_range = tx_win_max - tx_win_min + 1; |
| 579 | } |
| 580 | |
| 581 | LOGP(DRLCMAC, LOGL_DEBUG, "- TX-Window is: %d..%d\n", tx_win_min, |
| 582 | tx_win_max); |
| 583 | |
| 584 | /* select a window of Tx slots if available |
| 585 | * The maximum allowed slots depend on TX or the window of available |
| 586 | * slots. */ |
| 587 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| 588 | for (ts = tx_win_min, i = 0; i < tx_range; ts = (ts + 1) & 7) { |
| 589 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
| 590 | /* check if enabled */ |
| 591 | if (!pdch->enable) { |
| 592 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, " |
| 593 | "because not enabled\n", ts); |
| 594 | continue; |
| 595 | } |
| 596 | /* check if TSC changes */ |
| 597 | if (tsc < 0) |
| 598 | tbf->tsc = tsc = pdch->tsc; |
| 599 | else if (tsc != pdch->tsc) { |
| 600 | LOGP(DRLCMAC, LOGL_ERROR, "Skipping TS %d of " |
| 601 | "TRX=%d, because it has different TSC " |
| 602 | "than lower TS of TRX. In order to " |
| 603 | "allow multislot, all slots must be " |
| 604 | "configured with the same TSC!\n", |
| 605 | ts, tbf->trx); |
| 606 | /* increase window for Type 1 */ |
| 607 | if (Type == 1) |
| 608 | i++; |
| 609 | continue; |
| 610 | } |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 611 | /* check for free usf */ |
| 612 | usf[ts] = find_free_usf(pdch, ts); |
| 613 | if (usf[ts] < 0) { |
| 614 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, " |
| 615 | "because no USF available\n", ts); |
| 616 | /* increase window for Type 1 */ |
| 617 | if (Type == 1) |
| 618 | i++; |
| 619 | continue; |
| 620 | } |
| 621 | |
| 622 | tx_window |= (1 << ts); |
| 623 | LOGP(DRLCMAC, LOGL_DEBUG, "- Selected UL TS %d\n", ts); |
| 624 | |
| 625 | if (!(cust & 1)) { |
| 626 | LOGP(DRLCMAC, LOGL_DEBUG, "- Done, because " |
| 627 | "1 slot assigned\n"); |
| 628 | break; |
| 629 | } |
| 630 | if (++i == Tx) { |
| 631 | LOGP(DRLCMAC, LOGL_DEBUG, "- Done, because " |
| 632 | "slots / window reached maximum alowed " |
| 633 | "Tx size\n"); |
| 634 | break; |
| 635 | } |
| 636 | } |
| 637 | |
| 638 | LOGP(DRLCMAC, LOGL_DEBUG, "- Selected TX window: " |
| 639 | "(TS=0)\"%c%c%c%c%c%c%c%c\"(TS=7)\n", |
| 640 | ((tx_window & 0x01)) ? 'U' : '.', |
| 641 | ((tx_window & 0x02)) ? 'U' : '.', |
| 642 | ((tx_window & 0x04)) ? 'U' : '.', |
| 643 | ((tx_window & 0x08)) ? 'U' : '.', |
| 644 | ((tx_window & 0x10)) ? 'U' : '.', |
| 645 | ((tx_window & 0x20)) ? 'U' : '.', |
| 646 | ((tx_window & 0x40)) ? 'U' : '.', |
| 647 | ((tx_window & 0x80)) ? 'U' : '.'); |
| 648 | |
| 649 | if (!tx_window) { |
| 650 | LOGP(DRLCMAC, LOGL_NOTICE, "No suitable uplink slots " |
| 651 | "available\n"); |
| 652 | return -EBUSY; |
| 653 | } |
| 654 | } |
| 655 | |
| 656 | if (tbf->direction == GPRS_RLCMAC_DL_TBF) { |
Andreas Eversberg | 52c748c | 2012-07-15 16:33:02 +0200 | [diff] [blame] | 657 | uint8_t slotcount = 0; |
| 658 | |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 659 | /* assign downlink */ |
| 660 | if (rx_window == 0) { |
| 661 | LOGP(DRLCMAC, LOGL_NOTICE, "No downlink slots " |
| 662 | "available\n"); |
| 663 | return -EINVAL; |
| 664 | } |
| 665 | for (ts = 0; ts < 8; ts++) { |
| 666 | if ((rx_window & (1 << ts))) { |
| 667 | LOGP(DRLCMAC, LOGL_DEBUG, "- Assigning DL TS " |
| 668 | "%d\n", ts); |
| 669 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 670 | bts->trx[tbf->trx].dl_tbf[tbf->tfi] = tbf; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 671 | pdch->dl_tbf[tbf->tfi] = tbf; |
| 672 | tbf->pdch[ts] = pdch; |
Andreas Eversberg | 52c748c | 2012-07-15 16:33:02 +0200 | [diff] [blame] | 673 | slotcount++; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 674 | } |
| 675 | } |
Andreas Eversberg | 52c748c | 2012-07-15 16:33:02 +0200 | [diff] [blame] | 676 | if (slotcount) |
| 677 | LOGP(DRLCMAC, LOGL_INFO, "Using Multislot with %d " |
| 678 | "slots DL\n", slotcount); |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 679 | } else { |
| 680 | /* assign uplink */ |
| 681 | if (tx_window == 0) { |
| 682 | LOGP(DRLCMAC, LOGL_NOTICE, "No uplink slots " |
| 683 | "available\n"); |
| 684 | return -EINVAL; |
| 685 | } |
| 686 | for (ts = 0; ts < 8; ts++) { |
| 687 | if ((tx_window & (1 << ts))) { |
| 688 | LOGP(DRLCMAC, LOGL_DEBUG, "- Assigning UL TS " |
| 689 | "%d\n", ts); |
| 690 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 691 | bts->trx[tbf->trx].ul_tbf[tbf->tfi] = tbf; |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame] | 692 | pdch->ul_tbf[tbf->tfi] = tbf; |
| 693 | tbf->pdch[ts] = pdch; |
| 694 | tbf->dir.ul.usf[ts] = usf[ts]; |
| 695 | } |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | /* the timeslot of the TX window start is always |
| 700 | * available in RX window */ |
| 701 | tbf->first_common_ts = tx_win_min; |
| 702 | |
| 703 | return 0; |
| 704 | } |
| 705 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 706 | static void tbf_unlink_pdch(struct gprs_rlcmac_tbf *tbf) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 707 | { |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 708 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 709 | struct gprs_rlcmac_pdch *pdch; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 710 | int ts; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 711 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 712 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 713 | bts->trx[tbf->trx].ul_tbf[tbf->tfi] = NULL; |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 714 | for (ts = 0; ts < 8; ts++) { |
| 715 | pdch = tbf->pdch[ts]; |
| 716 | if (pdch) |
| 717 | pdch->ul_tbf[tbf->tfi] = NULL; |
| 718 | tbf->pdch[ts] = NULL; |
| 719 | } |
| 720 | } else { |
Andreas Eversberg | adb2f18 | 2012-08-07 17:06:08 +0200 | [diff] [blame] | 721 | bts->trx[tbf->trx].dl_tbf[tbf->tfi] = NULL; |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 722 | for (ts = 0; ts < 8; ts++) { |
| 723 | pdch = tbf->pdch[ts]; |
| 724 | if (pdch) |
| 725 | pdch->dl_tbf[tbf->tfi] = NULL; |
| 726 | tbf->pdch[ts] = NULL; |
| 727 | } |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | void tbf_free(struct gprs_rlcmac_tbf *tbf) |
| 732 | { |
| 733 | struct msgb *msg; |
| 734 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 735 | LOGP(DRLCMAC, LOGL_INFO, "Free %s TBF=%d with TLLI=0x%08x.\n", |
| 736 | (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tbf->tfi, |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 737 | tbf->tlli); |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 738 | if (tbf->ul_ass_state != GPRS_RLCMAC_UL_ASS_NONE) |
| 739 | LOGP(DRLCMAC, LOGL_ERROR, "Software error: Pending uplink " |
| 740 | "assignment. This may not happen, because the " |
| 741 | "assignment message never gets transmitted. Please " |
| 742 | "be shure not to free in this state. PLEASE FIX!\n"); |
| 743 | if (tbf->dl_ass_state != GPRS_RLCMAC_DL_ASS_NONE) |
| 744 | LOGP(DRLCMAC, LOGL_ERROR, "Software error: Pending downlink " |
| 745 | "assignment. This may not happen, because the " |
| 746 | "assignment message never gets transmitted. Please " |
| 747 | "be shure not to free in this state. PLEASE FIX!\n"); |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 748 | tbf_timer_stop(tbf); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 749 | while ((msg = msgb_dequeue(&tbf->llc_queue))) |
| 750 | msgb_free(msg); |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 751 | tbf_unlink_pdch(tbf); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 752 | llist_del(&tbf->list); |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 753 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF ends here **********\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 754 | talloc_free(tbf); |
| 755 | } |
| 756 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 757 | int tbf_update(struct gprs_rlcmac_tbf *tbf) |
| 758 | { |
| 759 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| 760 | struct gprs_rlcmac_tbf *ul_tbf = NULL; |
| 761 | int rc; |
| 762 | |
| 763 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF update **********\n"); |
| 764 | |
| 765 | if (tbf->direction != GPRS_RLCMAC_DL_TBF) |
| 766 | return -EINVAL; |
| 767 | |
| 768 | if (!tbf->ms_class) { |
| 769 | LOGP(DRLCMAC, LOGL_DEBUG, "- Cannot update, no class\n"); |
| 770 | return -EINVAL; |
| 771 | } |
| 772 | |
Andreas Eversberg | a9b9407 | 2012-07-15 19:30:41 +0200 | [diff] [blame] | 773 | ul_tbf = tbf_by_tlli(tbf->tlli, GPRS_RLCMAC_UL_TBF); |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 774 | |
| 775 | tbf_unlink_pdch(tbf); |
| 776 | rc = bts->alloc_algorithm(ul_tbf, tbf, bts->alloc_algorithm_curst); |
| 777 | /* if no ressource */ |
| 778 | if (rc < 0) { |
| 779 | LOGP(DRLCMAC, LOGL_ERROR, "No ressource after update???\n"); |
| 780 | return -rc; |
| 781 | } |
| 782 | |
| 783 | return 0; |
| 784 | } |
| 785 | |
| 786 | int tbf_assign_control_ts(struct gprs_rlcmac_tbf *tbf) |
| 787 | { |
| 788 | if (tbf->control_ts == 0xff) |
| 789 | LOGP(DRLCMAC, LOGL_DEBUG, "- Setting Control TS %d\n", |
Andreas Eversberg | 52c748c | 2012-07-15 16:33:02 +0200 | [diff] [blame] | 790 | tbf->first_common_ts); |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 791 | else if (tbf->control_ts != tbf->first_common_ts) |
| 792 | LOGP(DRLCMAC, LOGL_DEBUG, "- Changing Control TS %d\n", |
Andreas Eversberg | 52c748c | 2012-07-15 16:33:02 +0200 | [diff] [blame] | 793 | tbf->first_common_ts); |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 794 | tbf->control_ts = tbf->first_common_ts; |
| 795 | |
| 796 | return 0; |
| 797 | } |
| 798 | |
| 799 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 800 | const char *tbf_state_name[] = { |
| 801 | "NULL", |
| 802 | "ASSIGN", |
| 803 | "FLOW", |
| 804 | "FINISHED", |
| 805 | "WAIT RELEASE", |
| 806 | "RELEASING", |
| 807 | }; |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 808 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 809 | void tbf_new_state(struct gprs_rlcmac_tbf *tbf, |
| 810 | enum gprs_rlcmac_tbf_state state) |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 811 | { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 812 | LOGP(DRLCMAC, LOGL_DEBUG, "%s TBF=%d changes state from %s to %s\n", |
| 813 | (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tbf->tfi, |
| 814 | tbf_state_name[tbf->state], tbf_state_name[state]); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 815 | tbf->state = state; |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 816 | } |
| 817 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 818 | void tbf_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int T, |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 819 | unsigned int seconds, unsigned int microseconds) |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 820 | { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 821 | if (!osmo_timer_pending(&tbf->timer)) |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 822 | LOGP(DRLCMAC, LOGL_DEBUG, "Starting %s TBF=%d timer %u.\n", |
| 823 | (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 824 | tbf->tfi, T); |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 825 | else |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 826 | LOGP(DRLCMAC, LOGL_DEBUG, "Restarting %s TBF=%d timer %u " |
| 827 | "while old timer %u pending \n", |
| 828 | (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
| 829 | tbf->tfi, T, tbf->T); |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 830 | |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 831 | tbf->T = T; |
| 832 | tbf->num_T_exp = 0; |
| 833 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 834 | /* Tunning timers can be safely re-scheduled. */ |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 835 | tbf->timer.data = tbf; |
| 836 | tbf->timer.cb = &tbf_timer_cb; |
| 837 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 838 | osmo_timer_schedule(&tbf->timer, seconds, microseconds); |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 839 | } |
| 840 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 841 | void tbf_timer_stop(struct gprs_rlcmac_tbf *tbf) |
| 842 | { |
| 843 | if (osmo_timer_pending(&tbf->timer)) { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 844 | LOGP(DRLCMAC, LOGL_DEBUG, "Stopping %s TBF=%d timer %u.\n", |
| 845 | (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 846 | tbf->tfi, tbf->T); |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 847 | osmo_timer_del(&tbf->timer); |
| 848 | } |
| 849 | } |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 850 | |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 851 | /* starting time for assigning single slot |
| 852 | * This offset must be a multiple of 13. */ |
| 853 | #define AGCH_START_OFFSET 52 |
| 854 | |
| 855 | LLIST_HEAD(gprs_rlcmac_sbas); |
| 856 | |
| 857 | int sba_alloc(uint8_t *_trx, uint8_t *_ts, uint32_t *_fn, uint8_t ta) |
| 858 | { |
| 859 | |
| 860 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| 861 | struct gprs_rlcmac_pdch *pdch; |
| 862 | struct gprs_rlcmac_sba *sba; |
| 863 | uint8_t trx, ts; |
| 864 | uint32_t fn; |
| 865 | |
| 866 | sba = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_sba); |
| 867 | if (!sba) |
| 868 | return -ENOMEM; |
| 869 | |
| 870 | for (trx = 0; trx < 8; trx++) { |
| 871 | for (ts = 0; ts < 8; ts++) { |
| 872 | pdch = &bts->trx[trx].pdch[ts]; |
| 873 | if (!pdch->enable) |
| 874 | continue; |
| 875 | break; |
| 876 | } |
| 877 | if (ts < 8) |
| 878 | break; |
| 879 | } |
| 880 | if (trx == 8) { |
| 881 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH available.\n"); |
| 882 | return -EINVAL; |
| 883 | } |
| 884 | |
| 885 | fn = (pdch->last_rts_fn + AGCH_START_OFFSET) % 2715648; |
| 886 | |
| 887 | sba->trx = trx; |
| 888 | sba->ts = ts; |
| 889 | sba->fn = fn; |
| 890 | sba->ta = ta; |
| 891 | |
| 892 | llist_add(&sba->list, &gprs_rlcmac_sbas); |
| 893 | |
| 894 | *_trx = trx; |
| 895 | *_ts = ts; |
| 896 | *_fn = fn; |
| 897 | return 0; |
| 898 | } |
| 899 | |
| 900 | struct gprs_rlcmac_sba *sba_find(uint8_t trx, uint8_t ts, uint32_t fn) |
| 901 | { |
| 902 | struct gprs_rlcmac_sba *sba; |
| 903 | |
| 904 | llist_for_each_entry(sba, &gprs_rlcmac_sbas, list) { |
| 905 | if (sba->trx == trx && sba->ts == ts && sba->fn == fn) |
| 906 | return sba; |
| 907 | } |
| 908 | |
| 909 | return NULL; |
| 910 | } |
| 911 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 912 | #if 0 |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 913 | static void tbf_gsm_timer_cb(void *_tbf) |
| 914 | { |
| 915 | struct gprs_rlcmac_tbf *tbf = (struct gprs_rlcmac_tbf *)_tbf; |
| 916 | |
| 917 | tbf->num_fT_exp++; |
| 918 | |
| 919 | switch (tbf->fT) { |
| 920 | case 0: |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 921 | hier alles berdenken |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 922 | // This is timer for delay RLC/MAC data sending after Downlink Immediate Assignment on CCCH. |
| 923 | gprs_rlcmac_segment_llc_pdu(tbf); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 924 | 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] | 925 | tbf_free(tbf); |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 926 | break; |
| 927 | default: |
Ivan Kluchnikov | 856221f | 2012-06-15 09:31:29 +0400 | [diff] [blame] | 928 | 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] | 929 | } |
| 930 | } |
| 931 | |
| 932 | static void tbf_gsm_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int fT, |
| 933 | int frames) |
| 934 | { |
| 935 | if (osmo_gsm_timer_pending(&tbf->gsm_timer)) |
Ivan Kluchnikov | 856221f | 2012-06-15 09:31:29 +0400 | [diff] [blame] | 936 | 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] | 937 | tbf->fT = fT; |
| 938 | tbf->num_fT_exp = 0; |
| 939 | |
| 940 | /* FIXME: we should do this only once ? */ |
| 941 | tbf->gsm_timer.data = tbf; |
| 942 | tbf->gsm_timer.cb = &tbf_gsm_timer_cb; |
| 943 | |
| 944 | osmo_gsm_timer_schedule(&tbf->gsm_timer, frames); |
| 945 | } |
| 946 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 947 | eine stop-funktion, auch im tbf_free aufrufen |
| 948 | |
| 949 | #endif |
| 950 | |
| 951 | #if 0 |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 952 | void gprs_rlcmac_enqueue_block(bitvec *block, int len) |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 953 | { |
| 954 | struct msgb *msg = msgb_alloc(len, "rlcmac_dl"); |
| 955 | bitvec_pack(block, msgb_put(msg, len)); |
| 956 | msgb_enqueue(&block_queue, msg); |
| 957 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 958 | #endif |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 959 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 960 | /* received RLC/MAC block from L1 */ |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 961 | int gprs_rlcmac_rcv_block(uint8_t trx, uint8_t ts, uint8_t *data, uint8_t len, |
| 962 | uint32_t fn) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 963 | { |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 964 | unsigned payload = data[0] >> 6; |
| 965 | bitvec *block; |
| 966 | int rc = 0; |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 967 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 968 | switch (payload) { |
| 969 | case GPRS_RLCMAC_DATA_BLOCK: |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 970 | rc = gprs_rlcmac_rcv_data_block_acknowledged(trx, ts, data, |
| 971 | len); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 972 | break; |
| 973 | case GPRS_RLCMAC_CONTROL_BLOCK: |
| 974 | block = bitvec_alloc(len); |
| 975 | if (!block) |
| 976 | return -ENOMEM; |
| 977 | bitvec_unpack(block, data); |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 978 | rc = gprs_rlcmac_rcv_control_block(block, trx, ts, fn); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 979 | bitvec_free(block); |
| 980 | break; |
| 981 | case GPRS_RLCMAC_CONTROL_BLOCK_OPT: |
| 982 | LOGP(DRLCMAC, LOGL_NOTICE, "GPRS_RLCMAC_CONTROL_BLOCK_OPT block payload is not supported.\n"); |
| 983 | default: |
| 984 | LOGP(DRLCMAC, LOGL_NOTICE, "Unknown RLCMAC block payload.\n"); |
| 985 | rc = -EINVAL; |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 986 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 987 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 988 | return rc; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 989 | } |
| 990 | |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 991 | /* add paging to paging queue(s) */ |
| 992 | int gprs_rlcmac_add_paging(uint8_t chan_needed, uint8_t *identity_lv) |
| 993 | { |
| 994 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| 995 | uint8_t l, trx, ts, any_tbf = 0; |
| 996 | struct gprs_rlcmac_tbf *tbf; |
| 997 | struct gprs_rlcmac_paging *pag; |
| 998 | uint8_t slot_mask[8]; |
| 999 | int8_t first_ts; /* must be signed */ |
| 1000 | |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1001 | LOGP(DRLCMAC, LOGL_INFO, "Add RR paging: chan-needed=%d MI=%s\n", |
| 1002 | chan_needed, osmo_hexdump(identity_lv + 1, identity_lv[0])); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1003 | |
| 1004 | /* collect slots to page |
| 1005 | * Mark slots for every TBF, but only mark one of it. |
| 1006 | * Mark only the first slot found. |
| 1007 | * Don't mark, if TBF uses a different slot that is already marked. */ |
| 1008 | memset(slot_mask, 0, sizeof(slot_mask)); |
| 1009 | for (l = 0; gprs_rlcmac_tbfs_lists[l]; l++) { |
| 1010 | llist_for_each_entry(tbf, gprs_rlcmac_tbfs_lists[l], list) { |
| 1011 | first_ts = -1; |
| 1012 | for (ts = 0; ts < 8; ts++) { |
| 1013 | if (tbf->pdch[ts]) { |
| 1014 | /* remember the first slot found */ |
| 1015 | if (first_ts < 0) |
| 1016 | first_ts = ts; |
| 1017 | /* break, if we already marked a slot */ |
| 1018 | if ((slot_mask[tbf->trx] & (1 << ts))) |
| 1019 | break; |
| 1020 | } |
| 1021 | } |
| 1022 | /* mark first slot found, if none is marked already */ |
| 1023 | if (ts == 8 && first_ts >= 0) { |
| 1024 | LOGP(DRLCMAC, LOGL_DEBUG, "- %s TBF=%d uses " |
| 1025 | "TRX=%d TS=%d, so we mark\n", |
| 1026 | (tbf->direction == GPRS_RLCMAC_UL_TBF) |
| 1027 | ? "UL" : "DL", |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1028 | tbf->tfi, tbf->trx, first_ts); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1029 | slot_mask[tbf->trx] |= (1 << first_ts); |
| 1030 | } else |
| 1031 | LOGP(DRLCMAC, LOGL_DEBUG, "- %s TBF=%d uses " |
| 1032 | "already marked TRX=%d TS=%d\n", |
| 1033 | (tbf->direction == GPRS_RLCMAC_UL_TBF) |
| 1034 | ? "UL" : "DL", |
| 1035 | tbf->tfi, tbf->trx, ts); |
| 1036 | } |
| 1037 | } |
| 1038 | |
| 1039 | /* Now we have a list of marked slots. Every TBF uses at least one |
| 1040 | * of these slots. */ |
| 1041 | |
| 1042 | /* schedule paging to all marked slots */ |
| 1043 | for (trx = 0; trx < 8; trx++) { |
| 1044 | if (slot_mask[trx] == 0) |
| 1045 | continue; |
| 1046 | any_tbf = 1; |
| 1047 | for (ts = 0; ts < 8; ts++) { |
| 1048 | if ((slot_mask[trx] & (1 << ts))) { |
| 1049 | /* schedule */ |
Andreas Eversberg | 6681bb8 | 2012-07-25 08:48:44 +0200 | [diff] [blame] | 1050 | pag = talloc_zero(tall_pcu_ctx, |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1051 | struct gprs_rlcmac_paging); |
| 1052 | if (!pag) |
| 1053 | return -ENOMEM; |
| 1054 | pag->chan_needed = chan_needed; |
| 1055 | memcpy(pag->identity_lv, identity_lv, |
| 1056 | identity_lv[0] + 1); |
| 1057 | llist_add(&pag->list, |
| 1058 | &bts->trx[trx].pdch[ts].paging_list); |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1059 | LOGP(DRLCMAC, LOGL_INFO, "Paging on PACCH of " |
| 1060 | "TRX=%d TS=%d\n", trx, ts); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1061 | } |
| 1062 | } |
| 1063 | } |
| 1064 | |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1065 | if (!any_tbf) |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1066 | LOGP(DRLCMAC, LOGL_INFO, "No paging, because no TBF\n"); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1067 | |
| 1068 | return 0; |
| 1069 | } |
| 1070 | |
| 1071 | struct gprs_rlcmac_paging *gprs_rlcmac_dequeue_paging( |
| 1072 | struct gprs_rlcmac_pdch *pdch) |
| 1073 | { |
| 1074 | struct gprs_rlcmac_paging *pag; |
| 1075 | |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1076 | if (llist_empty(&pdch->paging_list)) |
| 1077 | return NULL; |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1078 | pag = llist_entry(pdch->paging_list.next, |
| 1079 | struct gprs_rlcmac_paging, list); |
| 1080 | llist_del(&pag->list); |
| 1081 | |
| 1082 | return pag; |
| 1083 | } |
| 1084 | |
| 1085 | struct msgb *gprs_rlcmac_send_packet_paging_request( |
| 1086 | struct gprs_rlcmac_pdch *pdch) |
| 1087 | { |
| 1088 | struct gprs_rlcmac_paging *pag; |
| 1089 | struct msgb *msg; |
| 1090 | unsigned wp = 0, len; |
| 1091 | |
| 1092 | /* no paging, no message */ |
| 1093 | pag = gprs_rlcmac_dequeue_paging(pdch); |
| 1094 | if (!pag) |
| 1095 | return NULL; |
| 1096 | |
| 1097 | LOGP(DRLCMAC, LOGL_DEBUG, "Scheduling paging\n"); |
| 1098 | |
| 1099 | /* alloc message */ |
| 1100 | msg = msgb_alloc(23, "pag ctrl block"); |
| 1101 | if (!msg) |
| 1102 | return NULL; |
| 1103 | bitvec *pag_vec = bitvec_alloc(23); |
| 1104 | if (!pag_vec) { |
| 1105 | msgb_free(msg); |
| 1106 | return NULL; |
| 1107 | } |
| 1108 | wp = write_packet_paging_request(pag_vec); |
| 1109 | |
| 1110 | /* loop until message is full */ |
| 1111 | while (pag) { |
| 1112 | /* try to add paging */ |
| 1113 | if ((pag->identity_lv[1] & 0x07) == 4) { |
| 1114 | /* TMSI */ |
| 1115 | LOGP(DRLCMAC, LOGL_DEBUG, "- TMSI=0x%08x\n", |
| 1116 | ntohl(*((uint32_t *)(pag->identity_lv + 1)))); |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1117 | len = 1 + 1 + 1 + 32 + 2 + 1; |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1118 | if (pag->identity_lv[0] != 5) { |
| 1119 | LOGP(DRLCMAC, LOGL_ERROR, "TMSI paging with " |
| 1120 | "MI != 5 octets!\n"); |
| 1121 | break; |
| 1122 | } |
| 1123 | } else { |
| 1124 | /* MI */ |
| 1125 | LOGP(DRLCMAC, LOGL_DEBUG, "- MI=%s\n", |
| 1126 | osmo_hexdump(pag->identity_lv + 1, |
| 1127 | pag->identity_lv[0])); |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1128 | len = 1 + 1 + 1 + 4 + (pag->identity_lv[0]<<3) + 2 + 1; |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1129 | if (pag->identity_lv[0] > 8) { |
| 1130 | LOGP(DRLCMAC, LOGL_ERROR, "Paging with " |
| 1131 | "MI > 8 octets!\n"); |
| 1132 | break; |
| 1133 | } |
| 1134 | } |
| 1135 | if (wp + len > 184) { |
| 1136 | LOGP(DRLCMAC, LOGL_DEBUG, "- Does not fit, so schedule " |
| 1137 | "next time\n"); |
| 1138 | /* put back paging record, because does not fit */ |
| 1139 | llist_add_tail(&pag->list, &pdch->paging_list); |
| 1140 | break; |
| 1141 | } |
| 1142 | write_repeated_page_info(pag_vec, wp, pag->identity_lv[0], |
| 1143 | pag->identity_lv + 1, pag->chan_needed); |
| 1144 | |
| 1145 | pag = gprs_rlcmac_dequeue_paging(pdch); |
| 1146 | } |
| 1147 | |
| 1148 | bitvec_pack(pag_vec, msgb_put(msg, 23)); |
Andreas Eversberg | 6681bb8 | 2012-07-25 08:48:44 +0200 | [diff] [blame] | 1149 | 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] | 1150 | LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Paging Request +++++++++++++++++++++++++\n"); |
| 1151 | decode_gsm_rlcmac_downlink(pag_vec, mac_control_block); |
| 1152 | LOGPC(DCSN1, LOGL_NOTICE, "\n"); |
| 1153 | LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Paging Request -------------------------\n"); |
| 1154 | bitvec_free(pag_vec); |
Andreas Eversberg | 6681bb8 | 2012-07-25 08:48:44 +0200 | [diff] [blame] | 1155 | talloc_free(mac_control_block); |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1156 | |
| 1157 | return msg; |
| 1158 | } |
| 1159 | |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1160 | // GSM 04.08 9.1.18 Immediate assignment |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1161 | int write_immediate_assignment(bitvec * dest, uint8_t downlink, uint8_t ra, |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 1162 | 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] | 1163 | uint8_t tfi, uint8_t usf, uint32_t tlli, |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 1164 | uint8_t polling, uint32_t fn, uint8_t single_block) |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1165 | { |
| 1166 | unsigned wp = 0; |
Andreas Eversberg | 7b04501 | 2012-07-05 07:38:49 +0200 | [diff] [blame] | 1167 | uint8_t plen; |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1168 | |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1169 | bitvec_write_field(dest, wp,0x0,4); // Skip Indicator |
| 1170 | bitvec_write_field(dest, wp,0x6,4); // Protocol Discriminator |
| 1171 | bitvec_write_field(dest, wp,0x3F,8); // Immediate Assignment Message Type |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1172 | |
| 1173 | // 10.5.2.25b Dedicated mode or TBF |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1174 | bitvec_write_field(dest, wp,0x0,1); // spare |
| 1175 | bitvec_write_field(dest, wp,0x0,1); // TMA : Two-message assignment: No meaning |
| 1176 | bitvec_write_field(dest, wp,downlink,1); // Downlink : Downlink assignment to mobile in packet idle mode |
| 1177 | 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] | 1178 | |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1179 | bitvec_write_field(dest, wp,0x0,4); // Page Mode |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1180 | |
| 1181 | // GSM 04.08 10.5.2.25a Packet Channel Description |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1182 | bitvec_write_field(dest, wp,0x1,5); // Channel type |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 1183 | bitvec_write_field(dest, wp,ts,3); // TN |
| 1184 | bitvec_write_field(dest, wp,tsc,3); // TSC |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1185 | bitvec_write_field(dest, wp,0x0,3); // non-hopping RF channel configuraion |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 1186 | bitvec_write_field(dest, wp,arfcn,10); // ARFCN |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1187 | |
| 1188 | //10.5.2.30 Request Reference |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1189 | bitvec_write_field(dest, wp,ra,8); // RA |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 1190 | bitvec_write_field(dest, wp,(ref_fn / (26 * 51)) % 32,5); // T1' |
| 1191 | bitvec_write_field(dest, wp,ref_fn % 51,6); // T3 |
| 1192 | bitvec_write_field(dest, wp,ref_fn % 26,5); // T2 |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1193 | |
| 1194 | // 10.5.2.40 Timing Advance |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1195 | bitvec_write_field(dest, wp,0x0,2); // spare |
| 1196 | bitvec_write_field(dest, wp,ta,6); // Timing Advance value |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1197 | |
| 1198 | // No mobile allocation in non-hopping systems. |
| 1199 | // A zero-length LV. Just write L=0. |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1200 | bitvec_write_field(dest, wp,0,8); |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1201 | |
Andreas Eversberg | 7b04501 | 2012-07-05 07:38:49 +0200 | [diff] [blame] | 1202 | if ((wp % 8)) { |
| 1203 | LOGP(DRLCMACUL, LOGL_ERROR, "Length of IMM.ASS without rest " |
| 1204 | "octets is not multiple of 8 bits, PLEASE FIX!\n"); |
| 1205 | exit (0); |
| 1206 | } |
| 1207 | plen = wp / 8; |
| 1208 | |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1209 | if (downlink) |
| 1210 | { |
| 1211 | // GSM 04.08 10.5.2.16 IA Rest Octets |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1212 | bitvec_write_field(dest, wp, 3, 2); // "HH" |
| 1213 | bitvec_write_field(dest, wp, 1, 2); // "01" Packet Downlink Assignment |
| 1214 | bitvec_write_field(dest, wp,tlli,32); // TLLI |
| 1215 | bitvec_write_field(dest, wp,0x1,1); // switch TFI : on |
| 1216 | bitvec_write_field(dest, wp,tfi,5); // TFI |
| 1217 | bitvec_write_field(dest, wp,0x0,1); // RLC acknowledged mode |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1218 | bitvec_write_field(dest, wp,0x0,1); // ALPHA = not present |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1219 | bitvec_write_field(dest, wp,0x0,5); // GAMMA power control parameter |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1220 | bitvec_write_field(dest, wp,polling,1); // Polling Bit |
| 1221 | bitvec_write_field(dest, wp,!polling,1); // TA_VALID ??? |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1222 | bitvec_write_field(dest, wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on |
| 1223 | bitvec_write_field(dest, wp,0x0,4); // TIMING_ADVANCE_INDEX |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1224 | if (polling) { |
| 1225 | bitvec_write_field(dest, wp,0x1,1); // TBF Starting TIME present |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 1226 | bitvec_write_field(dest, wp,(fn / (26 * 51)) % 32,5); // T1' |
| 1227 | bitvec_write_field(dest, wp,fn % 51,6); // T3 |
| 1228 | bitvec_write_field(dest, wp,fn % 26,5); // T2 |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1229 | } else { |
| 1230 | bitvec_write_field(dest, wp,0x0,1); // TBF Starting TIME present |
| 1231 | } |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1232 | bitvec_write_field(dest, wp,0x0,1); // P0 not present |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1233 | // bitvec_write_field(dest, wp,0x1,1); // P0 not present |
| 1234 | // bitvec_write_field(dest, wp,0xb,4); |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1235 | } |
| 1236 | else |
| 1237 | { |
Andreas Eversberg | dfa563c | 2012-07-06 08:13:59 +0200 | [diff] [blame] | 1238 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1239 | // GMS 04.08 10.5.2.37b 10.5.2.16 |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1240 | bitvec_write_field(dest, wp, 3, 2); // "HH" |
| 1241 | bitvec_write_field(dest, wp, 0, 2); // "0" Packet Uplink Assignment |
Andreas Eversberg | 07e97cf | 2012-08-07 16:00:56 +0200 | [diff] [blame] | 1242 | if (single_block) { |
| 1243 | bitvec_write_field(dest, wp, 0, 1); // Block Allocation : Single Block Allocation |
| 1244 | bitvec_write_field(dest, wp, 1, 1); // "1" Alpha : Present |
| 1245 | bitvec_write_field(dest, wp, 0, 4); // Alpha |
| 1246 | bitvec_write_field(dest, wp, 0, 5); // Gamma |
| 1247 | bitvec_write_field(dest, wp, 0, 1); // TIMING_ADVANCE_INDEX_FLAG |
| 1248 | bitvec_write_field(dest, wp, 1, 1); // TBF_STARTING_TIME_FLAG |
| 1249 | bitvec_write_field(dest, wp,(fn / (26 * 51)) % 32,5); // T1' |
| 1250 | bitvec_write_field(dest, wp,fn % 51,6); // T3 |
| 1251 | bitvec_write_field(dest, wp,fn % 26,5); // T2 |
| 1252 | } else { |
| 1253 | bitvec_write_field(dest, wp, 1, 1); // Block Allocation : Not Single Block Allocation |
| 1254 | bitvec_write_field(dest, wp, tfi, 5); // TFI_ASSIGNMENT Temporary Flow Identity |
| 1255 | bitvec_write_field(dest, wp, 0, 1); // POLLING |
| 1256 | bitvec_write_field(dest, wp, 0, 1); // ALLOCATION_TYPE: dynamic |
| 1257 | bitvec_write_field(dest, wp, usf, 3); // USF |
| 1258 | bitvec_write_field(dest, wp, 0, 1); // USF_GRANULARITY |
| 1259 | bitvec_write_field(dest, wp, 0, 1); // "0" power control: Not Present |
| 1260 | bitvec_write_field(dest, wp, bts->initial_cs-1, 2); // CHANNEL_CODING_COMMAND |
| 1261 | bitvec_write_field(dest, wp, 1, 1); // TLLI_BLOCK_CHANNEL_CODING |
| 1262 | bitvec_write_field(dest, wp, 1, 1); // "1" Alpha : Present |
| 1263 | bitvec_write_field(dest, wp, 0, 4); // Alpha |
| 1264 | bitvec_write_field(dest, wp, 0, 5); // Gamma |
| 1265 | bitvec_write_field(dest, wp, 0, 1); // TIMING_ADVANCE_INDEX_FLAG |
| 1266 | bitvec_write_field(dest, wp, 0, 1); // TBF_STARTING_TIME_FLAG |
| 1267 | } |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1268 | } |
| 1269 | |
Andreas Eversberg | 7b04501 | 2012-07-05 07:38:49 +0200 | [diff] [blame] | 1270 | return plen; |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1271 | } |
| 1272 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1273 | /* generate uplink assignment */ |
| 1274 | void write_packet_uplink_assignment(bitvec * dest, uint8_t old_tfi, |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1275 | uint8_t old_downlink, uint32_t tlli, uint8_t use_tlli, |
| 1276 | struct gprs_rlcmac_tbf *tbf, uint8_t poll) |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1277 | { |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1278 | // TODO We should use our implementation of encode RLC/MAC Control messages. |
Andreas Eversberg | dfa563c | 2012-07-06 08:13:59 +0200 | [diff] [blame] | 1279 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1280 | unsigned wp = 0; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1281 | uint8_t ts; |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1282 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1283 | bitvec_write_field(dest, wp,0x1,2); // Payload Type |
| 1284 | bitvec_write_field(dest, wp,0x0,2); // Uplink block with TDMA framenumber (N+13) |
| 1285 | bitvec_write_field(dest, wp,poll,1); // Suppl/Polling Bit |
| 1286 | bitvec_write_field(dest, wp,0x0,3); // Uplink state flag |
| 1287 | bitvec_write_field(dest, wp,0xa,6); // MESSAGE TYPE |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1288 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1289 | bitvec_write_field(dest, wp,0x0,2); // Page Mode |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1290 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1291 | bitvec_write_field(dest, wp,0x0,1); // switch PERSIST_LEVEL: off |
| 1292 | if (use_tlli) { |
| 1293 | bitvec_write_field(dest, wp,0x2,2); // switch TLLI : on |
| 1294 | bitvec_write_field(dest, wp,tlli,32); // TLLI |
| 1295 | } else { |
| 1296 | bitvec_write_field(dest, wp,0x0,1); // switch TFI : on |
| 1297 | bitvec_write_field(dest, wp,old_downlink,1); // 0=UPLINK TFI, 1=DL TFI |
| 1298 | bitvec_write_field(dest, wp,old_tfi,5); // TFI |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1299 | } |
Ivan Kluchnikov | b2b8100 | 2012-06-04 21:57:02 +0400 | [diff] [blame] | 1300 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1301 | bitvec_write_field(dest, wp,0x0,1); // Message escape |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1302 | bitvec_write_field(dest, wp,bts->initial_cs-1, 2); // CHANNEL_CODING_COMMAND |
Andreas Eversberg | dfa563c | 2012-07-06 08:13:59 +0200 | [diff] [blame] | 1303 | bitvec_write_field(dest, wp,0x1,1); // TLLI_BLOCK_CHANNEL_CODING |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1304 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1305 | bitvec_write_field(dest, wp,0x1,1); // switch TIMING_ADVANCE_VALUE = on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1306 | bitvec_write_field(dest, wp,tbf->ta,6); // TIMING_ADVANCE_VALUE |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1307 | bitvec_write_field(dest, wp,0x0,1); // switch TIMING_ADVANCE_INDEX = off |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1308 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1309 | #if 1 |
| 1310 | bitvec_write_field(dest, wp,0x1,1); // Frequency Parameters information elements = present |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1311 | bitvec_write_field(dest, wp,tbf->tsc,3); // Training Sequence Code (TSC) |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1312 | bitvec_write_field(dest, wp,0x0,2); // ARFCN = present |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1313 | bitvec_write_field(dest, wp,tbf->arfcn,10); // ARFCN |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1314 | #else |
| 1315 | bitvec_write_field(dest, wp,0x0,1); // Frequency Parameters = off |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 1316 | #endif |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1317 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1318 | bitvec_write_field(dest, wp,0x1,2); // Dynamic Allocation |
Ivan Kluchnikov | e359423 | 2012-06-07 01:12:29 +0400 | [diff] [blame] | 1319 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1320 | bitvec_write_field(dest, wp,0x0,1); // Extended Dynamic Allocation = off |
| 1321 | bitvec_write_field(dest, wp,0x0,1); // P0 = off |
Ivan Kluchnikov | e359423 | 2012-06-07 01:12:29 +0400 | [diff] [blame] | 1322 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1323 | bitvec_write_field(dest, wp,0x0,1); // USF_GRANULARITY |
| 1324 | bitvec_write_field(dest, wp,0x1,1); // switch TFI : on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1325 | bitvec_write_field(dest, wp,tbf->tfi,5);// TFI |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1326 | |
| 1327 | bitvec_write_field(dest, wp,0x0,1); // |
| 1328 | bitvec_write_field(dest, wp,0x0,1); // TBF Starting Time = off |
| 1329 | bitvec_write_field(dest, wp,0x0,1); // Timeslot Allocation |
| 1330 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1331 | for (ts = 0; ts < 8; ts++) { |
| 1332 | if (tbf->pdch[ts]) { |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1333 | bitvec_write_field(dest, wp,0x1,1); // USF_TN(i): on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1334 | bitvec_write_field(dest, wp,tbf->dir.ul.usf[ts],3); // USF_TN(i) |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1335 | } else |
| 1336 | bitvec_write_field(dest, wp,0x0,1); // USF_TN(i): off |
Ivan Kluchnikov | e359423 | 2012-06-07 01:12:29 +0400 | [diff] [blame] | 1337 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1338 | // bitvec_write_field(dest, wp,0x0,1); // Measurement Mapping struct not present |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1339 | } |
| 1340 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1341 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1342 | /* generate downlink assignment */ |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1343 | void write_packet_downlink_assignment(RlcMacDownlink_t * block, uint8_t old_tfi, |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1344 | uint8_t old_downlink, struct gprs_rlcmac_tbf *tbf, uint8_t poll) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1345 | { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1346 | // Packet downlink assignment TS 44.060 11.2.7 |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1347 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1348 | uint8_t tn; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1349 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1350 | block->PAYLOAD_TYPE = 0x1; // RLC/MAC control block that does not include the optional octets of the RLC/MAC control header |
| 1351 | block->RRBP = 0x0; // N+13 |
| 1352 | block->SP = poll; // RRBP field is valid |
| 1353 | block->USF = 0x0; // Uplink state flag |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1354 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1355 | block->u.Packet_Downlink_Assignment.MESSAGE_TYPE = 0x2; // Packet Downlink Assignment |
| 1356 | block->u.Packet_Downlink_Assignment.PAGE_MODE = 0x0; // Normal Paging |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1357 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1358 | block->u.Packet_Downlink_Assignment.Exist_PERSISTENCE_LEVEL = 0x0; // PERSISTENCE_LEVEL: off |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1359 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1360 | block->u.Packet_Downlink_Assignment.ID.UnionType = 0x0; // TFI = on |
| 1361 | block->u.Packet_Downlink_Assignment.ID.u.Global_TFI.UnionType = old_downlink; // 0=UPLINK TFI, 1=DL TFI |
| 1362 | 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] | 1363 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1364 | block->u.Packet_Downlink_Assignment.MAC_MODE = 0x0; // Dynamic Allocation |
| 1365 | block->u.Packet_Downlink_Assignment.RLC_MODE = 0x0; // RLC acknowledged mode |
| 1366 | 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] | 1367 | block->u.Packet_Downlink_Assignment.TIMESLOT_ALLOCATION = 0; // timeslot(s) |
| 1368 | for (tn = 0; tn < 8; tn++) { |
| 1369 | if (tbf->pdch[tn]) |
| 1370 | block->u.Packet_Downlink_Assignment.TIMESLOT_ALLOCATION |= 0x80 >> tn; // timeslot(s) |
| 1371 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1372 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1373 | 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] | 1374 | block->u.Packet_Downlink_Assignment.Packet_Timing_Advance.TIMING_ADVANCE_VALUE = tbf->ta; // TIMING_ADVANCE_VALUE |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1375 | block->u.Packet_Downlink_Assignment.Packet_Timing_Advance.Exist_IndexAndtimeSlot = 0x0; // TIMING_ADVANCE_INDEX = off |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1376 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1377 | 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] | 1378 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1379 | block->u.Packet_Downlink_Assignment.Exist_Frequency_Parameters = 0x1; // Frequency Parameters = on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1380 | 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] | 1381 | block->u.Packet_Downlink_Assignment.Frequency_Parameters.UnionType = 0x0; // ARFCN = on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1382 | block->u.Packet_Downlink_Assignment.Frequency_Parameters.u.ARFCN = tbf->arfcn; // ARFCN |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1383 | |
| 1384 | 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] | 1385 | block->u.Packet_Downlink_Assignment.DOWNLINK_TFI_ASSIGNMENT = tbf->tfi; // TFI |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1386 | |
| 1387 | block->u.Packet_Downlink_Assignment.Exist_Power_Control_Parameters = 0x1; // Power Control Parameters = on |
| 1388 | block->u.Packet_Downlink_Assignment.Power_Control_Parameters.ALPHA = 0x0; // ALPHA |
| 1389 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1390 | for (tn = 0; tn < 8; tn++) |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 1391 | { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1392 | if (tbf->pdch[tn]) |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1393 | { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1394 | block->u.Packet_Downlink_Assignment.Power_Control_Parameters.Slot[tn].Exist = 0x1; // Slot[i] = on |
| 1395 | block->u.Packet_Downlink_Assignment.Power_Control_Parameters.Slot[tn].GAMMA_TN = 0x0; // GAMMA_TN |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1396 | } |
| 1397 | else |
| 1398 | { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1399 | 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] | 1400 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1401 | } |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 1402 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1403 | block->u.Packet_Downlink_Assignment.Exist_TBF_Starting_Time = 0x0; // TBF Starting TIME = off |
| 1404 | block->u.Packet_Downlink_Assignment.Exist_Measurement_Mapping = 0x0; // Measurement_Mapping = off |
| 1405 | block->u.Packet_Downlink_Assignment.Exist_AdditionsR99 = 0x0; // AdditionsR99 = off |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1406 | } |
| 1407 | |
| 1408 | /* generate uplink ack */ |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1409 | 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] | 1410 | uint8_t final) |
| 1411 | { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1412 | // Packet Uplink Ack/Nack TS 44.060 11.2.28 |
| 1413 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1414 | char show_v_n[65]; |
| 1415 | |
Andreas Eversberg | ab18bab | 2012-07-15 16:34:07 +0200 | [diff] [blame] | 1416 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1417 | uint8_t rbb = 0; |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1418 | uint16_t i, bbn; |
| 1419 | uint16_t mod_sns_half = (tbf->sns >> 1) - 1; |
| 1420 | char bit; |
| 1421 | |
| 1422 | LOGP(DRLCMACUL, LOGL_DEBUG, "Sending Ack/Nack for TBF=%d " |
| 1423 | "(final=%d)\n", tbf->tfi, final); |
| 1424 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1425 | block->PAYLOAD_TYPE = 0x1; // RLC/MAC control block that does not include the optional octets of the RLC/MAC control header |
| 1426 | block->RRBP = 0x0; // N+13 |
| 1427 | block->SP = final; // RRBP field is valid, if it is final ack |
| 1428 | block->USF = 0x0; // Uplink state flag |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1429 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1430 | block->u.Packet_Uplink_Ack_Nack.MESSAGE_TYPE = 0x9; // Packet Downlink Assignment |
| 1431 | block->u.Packet_Uplink_Ack_Nack.PAGE_MODE = 0x0; // Normal Paging |
| 1432 | block->u.Packet_Uplink_Ack_Nack.UPLINK_TFI = tbf->tfi; // Uplink TFI |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1433 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1434 | block->u.Packet_Uplink_Ack_Nack.UnionType = 0x0; // PU_AckNack_GPRS = on |
Andreas Eversberg | ab18bab | 2012-07-15 16:34:07 +0200 | [diff] [blame] | 1435 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.CHANNEL_CODING_COMMAND = bts->initial_cs - 1; // CS1 |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1436 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Ack_Nack_Description.FINAL_ACK_INDICATION = final; // FINAL ACK INDICATION |
| 1437 | 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] | 1438 | // RECEIVE_BLOCK_BITMAP |
| 1439 | for (i = 0, bbn = (tbf->dir.ul.v_r - 64) & mod_sns_half; i < 64; |
| 1440 | i++, bbn = (bbn + 1) & mod_sns_half) { |
| 1441 | bit = tbf->dir.ul.v_n[bbn]; |
| 1442 | if (bit == 0) |
| 1443 | bit = ' '; |
| 1444 | show_v_n[i] = bit; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1445 | if (bit == 'R') |
| 1446 | rbb = (rbb << 1)|1; |
| 1447 | else |
| 1448 | rbb = (rbb << 1); |
| 1449 | if((i%8) == 7) |
| 1450 | { |
| 1451 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Ack_Nack_Description.RECEIVED_BLOCK_BITMAP[i/8] = rbb; |
| 1452 | rbb = 0; |
| 1453 | } |
Ivan Kluchnikov | e359423 | 2012-06-07 01:12:29 +0400 | [diff] [blame] | 1454 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1455 | show_v_n[64] = '\0'; |
| 1456 | LOGP(DRLCMACUL, LOGL_DEBUG, "- V(N): \"%s\" R=Received " |
| 1457 | "N=Not-Received\n", show_v_n); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1458 | |
| 1459 | 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] | 1460 | 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] | 1461 | 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] | 1462 | |
| 1463 | 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] | 1464 | 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] | 1465 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.Exist_Packet_Timing_Advance = 0x0; |
| 1466 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.Exist_Extension_Bits = 0x0; |
| 1467 | 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] | 1468 | } |
| 1469 | |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1470 | unsigned write_packet_paging_request(bitvec * dest) |
| 1471 | { |
| 1472 | unsigned wp = 0; |
| 1473 | |
| 1474 | bitvec_write_field(dest, wp,0x1,2); // Payload Type |
| 1475 | bitvec_write_field(dest, wp,0x0,3); // No polling |
| 1476 | bitvec_write_field(dest, wp,0x0,3); // Uplink state flag |
| 1477 | bitvec_write_field(dest, wp,0x22,6); // MESSAGE TYPE |
| 1478 | |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1479 | bitvec_write_field(dest, wp,0x0,2); // Page Mode |
| 1480 | |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1481 | bitvec_write_field(dest, wp,0x0,1); // No PERSISTENCE_LEVEL |
| 1482 | bitvec_write_field(dest, wp,0x0,1); // No NLN |
| 1483 | |
| 1484 | return wp; |
| 1485 | } |
| 1486 | |
| 1487 | unsigned write_repeated_page_info(bitvec * dest, unsigned& wp, uint8_t len, |
| 1488 | uint8_t *identity, uint8_t chan_needed) |
| 1489 | { |
Andreas Eversberg | 3b7461c | 2012-07-20 11:19:59 +0200 | [diff] [blame] | 1490 | bitvec_write_field(dest, wp,0x1,1); // Repeated Page info exists |
| 1491 | |
Andreas Eversberg | 2b91464 | 2012-07-19 13:06:26 +0200 | [diff] [blame] | 1492 | bitvec_write_field(dest, wp,0x1,1); // RR connection paging |
| 1493 | |
| 1494 | if ((identity[0] & 0x07) == 4) { |
| 1495 | bitvec_write_field(dest, wp,0x0,1); // TMSI |
| 1496 | identity++; |
| 1497 | len--; |
| 1498 | } else { |
| 1499 | bitvec_write_field(dest, wp,0x0,1); // MI |
| 1500 | bitvec_write_field(dest, wp,len,4); // MI len |
| 1501 | } |
| 1502 | while (len) { |
| 1503 | bitvec_write_field(dest, wp,*identity++,8); // MI data |
| 1504 | len--; |
| 1505 | } |
| 1506 | bitvec_write_field(dest, wp,chan_needed,2); // CHANNEL_NEEDED |
| 1507 | bitvec_write_field(dest, wp,0x0,1); // No eMLPP_PRIORITY |
| 1508 | |
| 1509 | return wp; |
| 1510 | } |
| 1511 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1512 | /* Send Uplink unit-data to SGSN. */ |
Andreas Eversberg | 3e372d5 | 2012-07-06 09:28:15 +0200 | [diff] [blame] | 1513 | int gprs_rlcmac_tx_ul_ud(gprs_rlcmac_tbf *tbf) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1514 | { |
| 1515 | const uint8_t qos_profile = QOS_PROFILE; |
| 1516 | struct msgb *llc_pdu; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 1517 | unsigned msg_len = NS_HDR_LEN + BSSGP_HDR_LEN + tbf->llc_index; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1518 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1519 | 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] | 1520 | if (!bctx) { |
| 1521 | LOGP(DBSSGP, LOGL_ERROR, "No bctx\n"); |
| 1522 | return -EIO; |
| 1523 | } |
Ivan Kluchnikov | c320d86 | 2012-03-18 15:04:48 +0400 | [diff] [blame] | 1524 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1525 | llc_pdu = msgb_alloc_headroom(msg_len, msg_len,"llc_pdu"); |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 1526 | msgb_tvlv_push(llc_pdu, BSSGP_IE_LLC_PDU, sizeof(uint8_t)*tbf->llc_index, tbf->llc_frame); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1527 | bssgp_tx_ul_ud(bctx, tbf->tlli, &qos_profile, llc_pdu); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1528 | |
Andreas Eversberg | 3e372d5 | 2012-07-06 09:28:15 +0200 | [diff] [blame] | 1529 | return 0; |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1530 | } |