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); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 76 | void *rlcmac_tall_ctx; |
| 77 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 78 | /* FIXME: spread ressources over multiple TRX. Also add option to use same |
| 79 | * TRX in case of existing TBF for TLLI in the other direction. */ |
| 80 | /* search for free TFI and return TFI, TRX and first TS */ |
| 81 | int tfi_alloc(enum gprs_rlcmac_tbf_direction dir, uint8_t *_trx, uint8_t *_ts, |
| 82 | uint8_t use_trx, uint8_t first_ts) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 83 | { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 84 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| 85 | struct gprs_rlcmac_pdch *pdch; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 86 | struct gprs_rlcmac_tbf **tbfp; |
| 87 | uint8_t trx_from, trx_to, trx, ts, tfi; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 88 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 89 | if (use_trx >= 0 && use_trx < 8) |
| 90 | trx_from = trx_to = use_trx; |
| 91 | else { |
| 92 | trx_from = 0; |
| 93 | trx_to = 7; |
| 94 | } |
| 95 | if (first_ts < 0 || first_ts >= 8) |
| 96 | first_ts = 0; |
| 97 | |
| 98 | /* on TRX find first enabled TS */ |
| 99 | for (trx = trx_from; trx <= trx_to; trx++) { |
| 100 | for (ts = first_ts; ts < 8; ts++) { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 101 | pdch = &bts->trx[trx].pdch[ts]; |
| 102 | if (!pdch->enable) |
| 103 | continue; |
| 104 | break; |
| 105 | } |
| 106 | if (ts < 8) |
| 107 | break; |
| 108 | } |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 109 | if (trx > trx_to) { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 110 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH available.\n"); |
| 111 | return -EINVAL; |
| 112 | } |
| 113 | |
| 114 | |
| 115 | LOGP(DRLCMAC, LOGL_DEBUG, "Searching for first unallocated TFI: " |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 116 | "TRX=%d first TS=%d\n", trx, ts); |
| 117 | if (dir == GPRS_RLCMAC_UL_TBF) |
| 118 | tbfp = pdch->ul_tbf; |
| 119 | else |
| 120 | tbfp = pdch->dl_tbf; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 121 | for (tfi = 0; tfi < 32; tfi++) { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 122 | if (!tbfp[tfi]) |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 123 | break; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 124 | } |
| 125 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 126 | if (tfi < 32) { |
| 127 | LOGP(DRLCMAC, LOGL_DEBUG, " Found TFI=%d.\n", tfi); |
| 128 | *_trx = trx; |
| 129 | *_ts = ts; |
| 130 | return tfi; |
| 131 | } |
| 132 | LOGP(DRLCMAC, LOGL_NOTICE, "No TFI available.\n"); |
| 133 | |
| 134 | return -1; |
| 135 | } |
| 136 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 137 | 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] | 138 | { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 139 | struct gprs_rlcmac_tbf *tbf; |
| 140 | uint8_t usf_map = 0; |
| 141 | uint8_t tfi, usf; |
| 142 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 143 | /* make map of used USF */ |
| 144 | for (tfi = 0; tfi < 32; tfi++) { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 145 | tbf = pdch->ul_tbf[tfi]; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 146 | if (!tbf) |
| 147 | continue; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 148 | usf_map |= (1 << tbf->dir.ul.usf[ts]); |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 149 | } |
| 150 | |
| 151 | /* look for USF, don't use USF=7 */ |
| 152 | for (usf = 0; usf < 7; usf++) { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 153 | if (!(usf_map & (1 << usf))) |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 154 | return usf; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 155 | } |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 156 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 157 | return -1; |
| 158 | } |
| 159 | |
| 160 | /* lookup TBF Entity (by TFI) */ |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 161 | struct gprs_rlcmac_tbf *tbf_by_tfi(uint8_t tfi, uint8_t trx, uint8_t ts, |
| 162 | enum gprs_rlcmac_tbf_direction dir) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 163 | { |
| 164 | struct gprs_rlcmac_tbf *tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 165 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 166 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 167 | if (tfi >= 32 || trx >= 8 || ts >= 8) |
| 168 | return NULL; |
| 169 | |
| 170 | if (dir == GPRS_RLCMAC_UL_TBF) |
| 171 | tbf = bts->trx[trx].pdch[ts].ul_tbf[tfi]; |
| 172 | else |
| 173 | tbf = bts->trx[trx].pdch[ts].dl_tbf[tfi]; |
| 174 | if (!tbf) |
| 175 | return NULL; |
| 176 | |
| 177 | if (tbf->state != GPRS_RLCMAC_RELEASING) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 178 | return tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 179 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 180 | return NULL; |
| 181 | } |
| 182 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 183 | /* search for active downlink or uplink tbf */ |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 184 | struct gprs_rlcmac_tbf *tbf_by_tlli(uint32_t tlli, |
| 185 | enum gprs_rlcmac_tbf_direction dir) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 186 | { |
| 187 | struct gprs_rlcmac_tbf *tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 188 | if (dir == GPRS_RLCMAC_UL_TBF) { |
| 189 | llist_for_each_entry(tbf, &gprs_rlcmac_ul_tbfs, list) { |
| 190 | if (tbf->state != GPRS_RLCMAC_RELEASING |
| 191 | && tbf->tlli == tlli) |
| 192 | return tbf; |
| 193 | } |
| 194 | } else { |
| 195 | llist_for_each_entry(tbf, &gprs_rlcmac_dl_tbfs, list) { |
| 196 | if (tbf->state != GPRS_RLCMAC_RELEASING |
| 197 | && tbf->tlli == tlli) |
| 198 | return tbf; |
| 199 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 200 | } |
| 201 | return NULL; |
| 202 | } |
| 203 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 204 | 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] | 205 | { |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 206 | struct gprs_rlcmac_tbf *tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 207 | |
| 208 | /* only one TBF can poll on specific TS/FN, because scheduler can only |
| 209 | * schedule one downlink control block (with polling) at a FN per TS */ |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 210 | llist_for_each_entry(tbf, &gprs_rlcmac_ul_tbfs, list) { |
| 211 | if (tbf->state != GPRS_RLCMAC_RELEASING |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 212 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 213 | && tbf->poll_fn == fn && tbf->trx == trx |
| 214 | && tbf->control_ts == ts) |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 215 | return tbf; |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 216 | } |
| 217 | llist_for_each_entry(tbf, &gprs_rlcmac_dl_tbfs, list) { |
| 218 | if (tbf->state != GPRS_RLCMAC_RELEASING |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 219 | && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 220 | && tbf->poll_fn == fn && tbf->trx == trx |
| 221 | && tbf->control_ts == ts) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 222 | return tbf; |
| 223 | } |
| 224 | return NULL; |
| 225 | } |
| 226 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 227 | struct gprs_rlcmac_tbf *tbf_alloc(struct gprs_rlcmac_tbf *old_tbf, |
| 228 | enum gprs_rlcmac_tbf_direction dir, uint8_t tfi, uint8_t trx, |
| 229 | uint8_t first_ts, uint8_t ms_class, uint8_t single_slot) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 230 | { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 231 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 232 | struct gprs_rlcmac_tbf *tbf; |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 233 | int rc; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 234 | |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 235 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF starts here **********\n"); |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 236 | LOGP(DRLCMAC, LOGL_INFO, "Allocating %s TBF: TFI=%d TRX=%d " |
| 237 | "MS_CLASS=%d\n", (dir == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
| 238 | tfi, trx, ms_class); |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 239 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 240 | if (trx >= 8 || first_ts >= 8 || tfi >= 32) |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 241 | return NULL; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 242 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 243 | tbf = talloc_zero(rlcmac_tall_ctx, struct gprs_rlcmac_tbf); |
| 244 | if (!tbf) |
| 245 | return NULL; |
| 246 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 247 | tbf->direction = dir; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 248 | tbf->tfi = tfi; |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 249 | tbf->trx = trx; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 250 | tbf->arfcn = bts->trx[trx].arfcn; |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 251 | tbf->first_ts = first_ts; |
| 252 | tbf->ms_class = ms_class; |
| 253 | tbf->ws = 64; |
| 254 | tbf->sns = 128; |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 255 | /* select algorithm A in case we don't have multislot class info */ |
| 256 | if (single_slot || ms_class == 0) |
| 257 | rc = alloc_algorithm_a(old_tbf, tbf, |
| 258 | bts->alloc_algorithm_curst); |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 259 | else |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 260 | rc = bts->alloc_algorithm(old_tbf, tbf, |
| 261 | bts->alloc_algorithm_curst); |
| 262 | /* if no ressource */ |
| 263 | if (rc < 0) { |
| 264 | talloc_free(tbf); |
| 265 | return NULL; |
| 266 | } |
| 267 | /* assign control ts */ |
| 268 | tbf->control_ts = 0xff; |
| 269 | rc = tbf_assign_control_ts(tbf); |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 270 | /* if no ressource */ |
| 271 | if (rc < 0) { |
| 272 | talloc_free(tbf); |
| 273 | return NULL; |
| 274 | } |
| 275 | |
| 276 | INIT_LLIST_HEAD(&tbf->llc_queue); |
| 277 | if (dir == GPRS_RLCMAC_UL_TBF) |
| 278 | llist_add(&tbf->list, &gprs_rlcmac_ul_tbfs); |
| 279 | else |
| 280 | llist_add(&tbf->list, &gprs_rlcmac_dl_tbfs); |
| 281 | |
| 282 | return tbf; |
| 283 | } |
| 284 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 285 | /* Slot Allocation: Algorithm A |
| 286 | * |
| 287 | * Assign single slot for uplink and downlink |
| 288 | */ |
| 289 | int alloc_algorithm_a(struct gprs_rlcmac_tbf *old_tbf, |
| 290 | struct gprs_rlcmac_tbf *tbf, uint32_t cust) |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 291 | { |
| 292 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| 293 | struct gprs_rlcmac_pdch *pdch; |
| 294 | uint8_t ts = tbf->first_ts; |
| 295 | int8_t usf; /* must be signed */ |
| 296 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 297 | LOGP(DRLCMAC, LOGL_DEBUG, "Slot Allocation (Algorithm A) for class " |
| 298 | "%d\n", tbf->ms_class); |
| 299 | |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 300 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
| 301 | if (!pdch->enable) { |
| 302 | LOGP(DRLCMAC, LOGL_ERROR, "TS=%d not enabled.", ts); |
| 303 | return -EIO; |
| 304 | } |
| 305 | tbf->tsc = pdch->tsc; |
| 306 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| 307 | /* if TFI is free on TS */ |
| 308 | if (!pdch->ul_tbf[tbf->tfi]) { |
| 309 | /* if USF available */ |
| 310 | usf = find_free_usf(pdch, ts); |
| 311 | if (usf >= 0) { |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 312 | LOGP(DRLCMAC, LOGL_DEBUG, "- Assign uplink " |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 313 | "TS=%d USF=%d\n", ts, usf); |
| 314 | pdch->ul_tbf[tbf->tfi] = tbf; |
| 315 | tbf->pdch[ts] = pdch; |
| 316 | } else { |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 317 | LOGP(DRLCMAC, LOGL_NOTICE, "- Failed " |
| 318 | "allocating TS=%d, no USF available\n", |
| 319 | ts); |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 320 | return -EBUSY; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 321 | } |
| 322 | } else { |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 323 | LOGP(DRLCMAC, LOGL_NOTICE, "- Failed allocating " |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 324 | "TS=%d, TFI is not available\n", ts); |
| 325 | return -EBUSY; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 326 | } |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 327 | } else { |
| 328 | /* if TFI is free on TS */ |
| 329 | if (!pdch->dl_tbf[tbf->tfi]) { |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 330 | LOGP(DRLCMAC, LOGL_DEBUG, "- Assign downlink TS=%d\n", |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 331 | ts); |
| 332 | pdch->dl_tbf[tbf->tfi] = tbf; |
| 333 | tbf->pdch[ts] = pdch; |
| 334 | } else { |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 335 | LOGP(DRLCMAC, LOGL_NOTICE, "- Failed allocating " |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 336 | "TS=%d, TFI is not available\n", ts); |
| 337 | return -EBUSY; |
| 338 | } |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 339 | } |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 340 | /* the only one TS is the common TS */ |
| 341 | tbf->first_common_ts = ts; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 342 | |
Andreas Eversberg | f298fa8 | 2012-07-13 14:50:57 +0200 | [diff] [blame] | 343 | return 0; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 344 | } |
| 345 | |
Andreas Eversberg | 53f4725 | 2012-07-15 07:10:10 +0200 | [diff] [blame^] | 346 | /* Slot Allocation: Algorithm B |
| 347 | * |
| 348 | * Assign as many downlink slots as possible. |
| 349 | * Assign one uplink slot. (With free USF) |
| 350 | * |
| 351 | */ |
| 352 | int alloc_algorithm_b(struct gprs_rlcmac_tbf *old_tbf, |
| 353 | struct gprs_rlcmac_tbf *tbf, uint32_t cust) |
| 354 | { |
| 355 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| 356 | struct gprs_rlcmac_pdch *pdch; |
| 357 | struct gprs_ms_multislot_class *ms_class; |
| 358 | uint8_t Rx, Tx, Sum; /* Maximum Number of Slots: RX, Tx, Sum Rx+Tx */ |
| 359 | uint8_t Tta, Ttb, Tra, Trb, Tt, Tr; /* Minimum Number of Slots */ |
| 360 | uint8_t Type; /* Type of Mobile */ |
| 361 | uint8_t rx_win_min, rx_win_max; |
| 362 | uint8_t tx_win_min, tx_win_max, tx_range; |
| 363 | uint8_t rx_window = 0, tx_window = 0; |
| 364 | const char *digit[10] = { "0","1","2","3","4","5","6","7","8","9" }; |
| 365 | uint8_t usf[8]; |
| 366 | int8_t tsc = -1; /* must be signed */ |
| 367 | uint8_t i, ts; |
| 368 | |
| 369 | LOGP(DRLCMAC, LOGL_DEBUG, "Slot Allocation (Algorithm B) for class " |
| 370 | "%d\n", tbf->ms_class); |
| 371 | |
| 372 | if (tbf->ms_class >= 32) { |
| 373 | LOGP(DRLCMAC, LOGL_ERROR, "Multislot class %d out of range.\n", |
| 374 | tbf->ms_class); |
| 375 | return -EINVAL; |
| 376 | } |
| 377 | |
| 378 | ms_class = &gprs_ms_multislot_class[tbf->ms_class]; |
| 379 | if (ms_class->tx == MS_NA) { |
| 380 | LOGP(DRLCMAC, LOGL_NOTICE, "Multislot class %d not " |
| 381 | "applicable.\n", tbf->ms_class); |
| 382 | return -EINVAL; |
| 383 | } |
| 384 | |
| 385 | Rx = ms_class->rx; |
| 386 | Tx = ms_class->tx; |
| 387 | Sum = ms_class->sum; |
| 388 | Tta = ms_class->ta; |
| 389 | Ttb = ms_class->tb; |
| 390 | Tra = ms_class->ra; |
| 391 | Trb = ms_class->rb; |
| 392 | Type = ms_class->type; |
| 393 | |
| 394 | /* Tta and Ttb may depend on hopping or frequency change */ |
| 395 | if (Ttb == MS_A) { |
| 396 | if (/* FIXME: hopping*/ 0) |
| 397 | Ttb = 1; |
| 398 | else |
| 399 | Ttb = 0; |
| 400 | } |
| 401 | if (Trb == MS_A) { |
| 402 | if (/* FIXME: hopping*/ 0) |
| 403 | Ttb = 1; |
| 404 | else |
| 405 | Ttb = 0; |
| 406 | } |
| 407 | if (Ttb == MS_B) { |
| 408 | /* FIXME: or frequency change */ |
| 409 | if (/* FIXME: hopping*/ 0) |
| 410 | Ttb = 1; |
| 411 | else |
| 412 | Ttb = 0; |
| 413 | } |
| 414 | if (Trb == MS_C) { |
| 415 | /* FIXME: or frequency change */ |
| 416 | if (/* FIXME: hopping*/ 0) |
| 417 | Ttb = 1; |
| 418 | else |
| 419 | Ttb = 0; |
| 420 | } |
| 421 | |
| 422 | LOGP(DRLCMAC, LOGL_DEBUG, "- Rx=%d Tx=%d Sum Rx+Tx=%s Tta=%s Ttb=%d " |
| 423 | " Tra=%d Trb=%d Type=%d\n", Rx, Tx, |
| 424 | (Sum == MS_NA) ? "N/A" : digit[Sum], |
| 425 | (Tta == MS_NA) ? "N/A" : digit[Tta], Ttb, Tra, Trb, Type); |
| 426 | |
| 427 | /* select the values for time contraints */ |
| 428 | if (/* FIXME: monitoring */0) { |
| 429 | /* applicable to type 1 and type 2 */ |
| 430 | Tt = Ttb; |
| 431 | Tr = Tra; |
| 432 | } else { |
| 433 | /* applicable to type 1 and type 2 */ |
| 434 | Tt = Ttb; |
| 435 | Tr = Trb; |
| 436 | } |
| 437 | |
| 438 | /* select a window of Rx slots if available |
| 439 | * The maximum allowed slots depend on RX or the window of available |
| 440 | * slots. |
| 441 | * This must be done for uplink TBF also, because it is the basis |
| 442 | * for calculating control slot and uplink slot(s). */ |
| 443 | rx_win_min = rx_win_max = tbf->first_ts; |
| 444 | for (ts = tbf->first_ts, i = 0; ts < 8; ts++) { |
| 445 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
| 446 | /* check if enabled */ |
| 447 | if (!pdch->enable) { |
| 448 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, because " |
| 449 | "not enabled\n", ts); |
| 450 | /* increase window for Type 1 */ |
| 451 | if (Type == 1) |
| 452 | i++; |
| 453 | continue; |
| 454 | } |
| 455 | /* check if TSC changes */ |
| 456 | if (tsc < 0) |
| 457 | tbf->tsc = tsc = pdch->tsc; |
| 458 | else if (tsc != pdch->tsc) { |
| 459 | LOGP(DRLCMAC, LOGL_ERROR, "Skipping TS %d of TRX=%d, " |
| 460 | "because it has different TSC than lower TS " |
| 461 | "of TRX. In order to allow multislot, all " |
| 462 | "slots must be configured with the same " |
| 463 | "TSC!\n", ts, tbf->trx); |
| 464 | /* increase window for Type 1 */ |
| 465 | if (Type == 1) |
| 466 | i++; |
| 467 | continue; |
| 468 | } |
| 469 | /* check if TFI for slot is available |
| 470 | * This is only possible for downlink TFI. */ |
| 471 | if (tbf->direction == GPRS_RLCMAC_DL_TBF |
| 472 | && pdch->dl_tbf[tbf->tfi]) { |
| 473 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, because " |
| 474 | "already assigned to other DL TBF with " |
| 475 | "TFI=%d\n", ts, tbf->tfi); |
| 476 | /* increase window for Type 1 */ |
| 477 | if (Type == 1) |
| 478 | i++; |
| 479 | continue; |
| 480 | } |
| 481 | |
| 482 | rx_window |= (1 << ts); |
| 483 | LOGP(DRLCMAC, LOGL_DEBUG, "- Selected DL TS %d\n", ts); |
| 484 | |
| 485 | /* range of window (required for Type 1) */ |
| 486 | rx_win_max = ts; |
| 487 | |
| 488 | if (++i == Rx) { |
| 489 | LOGP(DRLCMAC, LOGL_DEBUG, "- Done, because slots / " |
| 490 | "window reached maximum alowed Rx size\n"); |
| 491 | break; |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | LOGP(DRLCMAC, LOGL_DEBUG, "- Selected slots for RX: " |
| 496 | "(TS=0)\"%c%c%c%c%c%c%c%c\"(TS=7)\n", |
| 497 | ((rx_window & 0x01)) ? 'D' : '.', |
| 498 | ((rx_window & 0x02)) ? 'D' : '.', |
| 499 | ((rx_window & 0x04)) ? 'D' : '.', |
| 500 | ((rx_window & 0x08)) ? 'D' : '.', |
| 501 | ((rx_window & 0x10)) ? 'D' : '.', |
| 502 | ((rx_window & 0x20)) ? 'D' : '.', |
| 503 | ((rx_window & 0x40)) ? 'D' : '.', |
| 504 | ((rx_window & 0x80)) ? 'D' : '.'); |
| 505 | |
| 506 | /* reduce window, if existing uplink slots collide RX window */ |
| 507 | if (Type == 1 && old_tbf && old_tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| 508 | uint8_t collide = 0, ul_usage = 0; |
| 509 | int j; |
| 510 | |
| 511 | /* calculate mask of colliding slots */ |
| 512 | for (ts = old_tbf->first_ts; ts < 8; ts++) { |
| 513 | if (old_tbf->pdch[ts]) { |
| 514 | ul_usage |= (1 << ts); |
| 515 | /* mark bits from TS-t .. TS+r */ |
| 516 | for (j = ts - Tt; j != ((ts + Tr + 1) & 7); |
| 517 | j = (j + 1) & 7) |
| 518 | collide |= (1 << j); |
| 519 | } |
| 520 | } |
| 521 | LOGP(DRLCMAC, LOGL_DEBUG, "- Not allowed slots due to existing " |
| 522 | "UL allocation: (TS=0)\"%c%c%c%c%c%c%c%c\"(TS=7) " |
| 523 | " D=downlink x=not usable\n", |
| 524 | ((ul_usage & 0x01)) ? 'D' : ((collide & 0x01))?'x':'.', |
| 525 | ((ul_usage & 0x02)) ? 'D' : ((collide & 0x02))?'x':'.', |
| 526 | ((ul_usage & 0x04)) ? 'D' : ((collide & 0x04))?'x':'.', |
| 527 | ((ul_usage & 0x08)) ? 'D' : ((collide & 0x08))?'x':'.', |
| 528 | ((ul_usage & 0x10)) ? 'D' : ((collide & 0x10))?'x':'.', |
| 529 | ((ul_usage & 0x20)) ? 'D' : ((collide & 0x20))?'x':'.', |
| 530 | ((ul_usage & 0x40)) ? 'D' : ((collide & 0x40))?'x':'.', |
| 531 | ((ul_usage & 0x80)) ? 'D' : ((collide & 0x80))?'x':'.'); |
| 532 | |
| 533 | /* apply massk to reduce tx_window (shifted by 3 slots) */ |
| 534 | rx_window &= ~(collide << 3); |
| 535 | rx_window &= ~(collide >> 5); |
| 536 | LOGP(DRLCMAC, LOGL_DEBUG, "- Remaining slots for RX: " |
| 537 | "(TS=0)\"%c%c%c%c%c%c%c%c\"(TS=7)\n", |
| 538 | ((rx_window & 0x01)) ? 'D' : '.', |
| 539 | ((rx_window & 0x02)) ? 'D' : '.', |
| 540 | ((rx_window & 0x04)) ? 'D' : '.', |
| 541 | ((rx_window & 0x08)) ? 'D' : '.', |
| 542 | ((rx_window & 0x10)) ? 'D' : '.', |
| 543 | ((rx_window & 0x20)) ? 'D' : '.', |
| 544 | ((rx_window & 0x40)) ? 'D' : '.', |
| 545 | ((rx_window & 0x80)) ? 'D' : '.'); |
| 546 | if (!rx_window) { |
| 547 | LOGP(DRLCMAC, LOGL_NOTICE, "No suitable downlink slots " |
| 548 | "available with current uplink assignment\n"); |
| 549 | return -EBUSY; |
| 550 | } |
| 551 | |
| 552 | /* calculate new min/max */ |
| 553 | for (ts = rx_win_min; ts <= rx_win_max; ts++) { |
| 554 | if ((rx_window & (1 << ts))) |
| 555 | break; |
| 556 | rx_win_min = ts + 1; |
| 557 | LOGP(DRLCMAC, LOGL_NOTICE, "- TS has been deleted, so " |
| 558 | "raising start of DL window to %d\n", |
| 559 | rx_win_min); |
| 560 | } |
| 561 | for (ts = rx_win_max; ts >= rx_win_min; ts--) { |
| 562 | if ((rx_window & (1 << ts))) |
| 563 | break; |
| 564 | rx_win_max = ts - 1; |
| 565 | LOGP(DRLCMAC, LOGL_NOTICE, "- TS has been deleted, so " |
| 566 | "lowering end of DL window to %d\n", |
| 567 | rx_win_max); |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | /* reduce window, to allow at least one uplink TX slot |
| 572 | * this is only required for Type 1 */ |
| 573 | if (Type == 1 && rx_win_max - rx_win_min + 1 + Tt + 1 + Tr > 8) { |
| 574 | rx_win_max = rx_win_min + 7 - Tr - 1 - Tr; |
| 575 | LOGP(DRLCMAC, LOGL_DEBUG, "- Reduce RX window due to time " |
| 576 | "contraints to %d slots\n", |
| 577 | rx_win_max - rx_win_min + 1); |
| 578 | } |
| 579 | |
| 580 | LOGP(DRLCMAC, LOGL_DEBUG, "- RX-Window is: %d..%d\n", rx_win_min, |
| 581 | rx_win_max); |
| 582 | |
| 583 | /* calculate TX window */ |
| 584 | if (Type == 1) { |
| 585 | /* calculate TX window (shifted by 3 timeslots) |
| 586 | * it uses the space between tx_win_max and tx_win_min */ |
| 587 | tx_win_min = (rx_win_max - 2 + Tt) & 7; |
| 588 | tx_win_max = (rx_win_min + 4 - Tr) & 7; |
| 589 | /* calculate the TX window size (might be larger than Tx) */ |
| 590 | tx_range = (tx_win_max - tx_win_min + 1) & 7; |
| 591 | } else { |
| 592 | /* TX and RX simultaniously */ |
| 593 | tx_win_min = rx_win_min; |
| 594 | tx_win_max = 7; |
| 595 | /* TX window size (might be larger than Tx) */ |
| 596 | tx_range = tx_win_max - tx_win_min + 1; |
| 597 | } |
| 598 | |
| 599 | LOGP(DRLCMAC, LOGL_DEBUG, "- TX-Window is: %d..%d\n", tx_win_min, |
| 600 | tx_win_max); |
| 601 | |
| 602 | /* select a window of Tx slots if available |
| 603 | * The maximum allowed slots depend on TX or the window of available |
| 604 | * slots. */ |
| 605 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| 606 | for (ts = tx_win_min, i = 0; i < tx_range; ts = (ts + 1) & 7) { |
| 607 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
| 608 | /* check if enabled */ |
| 609 | if (!pdch->enable) { |
| 610 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, " |
| 611 | "because not enabled\n", ts); |
| 612 | continue; |
| 613 | } |
| 614 | /* check if TSC changes */ |
| 615 | if (tsc < 0) |
| 616 | tbf->tsc = tsc = pdch->tsc; |
| 617 | else if (tsc != pdch->tsc) { |
| 618 | LOGP(DRLCMAC, LOGL_ERROR, "Skipping TS %d of " |
| 619 | "TRX=%d, because it has different TSC " |
| 620 | "than lower TS of TRX. In order to " |
| 621 | "allow multislot, all slots must be " |
| 622 | "configured with the same TSC!\n", |
| 623 | ts, tbf->trx); |
| 624 | /* increase window for Type 1 */ |
| 625 | if (Type == 1) |
| 626 | i++; |
| 627 | continue; |
| 628 | } |
| 629 | /* check if TFI for slot is available */ |
| 630 | if (pdch->ul_tbf[tbf->tfi]) { |
| 631 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, " |
| 632 | "because already assigned to other " |
| 633 | "UL TBF with TFI=%d\n", ts, tbf->tfi); |
| 634 | /* increase window for Type 1 */ |
| 635 | if (Type == 1) |
| 636 | i++; |
| 637 | continue; |
| 638 | } |
| 639 | /* check for free usf */ |
| 640 | usf[ts] = find_free_usf(pdch, ts); |
| 641 | if (usf[ts] < 0) { |
| 642 | LOGP(DRLCMAC, LOGL_DEBUG, "- Skipping TS %d, " |
| 643 | "because no USF available\n", ts); |
| 644 | /* increase window for Type 1 */ |
| 645 | if (Type == 1) |
| 646 | i++; |
| 647 | continue; |
| 648 | } |
| 649 | |
| 650 | tx_window |= (1 << ts); |
| 651 | LOGP(DRLCMAC, LOGL_DEBUG, "- Selected UL TS %d\n", ts); |
| 652 | |
| 653 | if (!(cust & 1)) { |
| 654 | LOGP(DRLCMAC, LOGL_DEBUG, "- Done, because " |
| 655 | "1 slot assigned\n"); |
| 656 | break; |
| 657 | } |
| 658 | if (++i == Tx) { |
| 659 | LOGP(DRLCMAC, LOGL_DEBUG, "- Done, because " |
| 660 | "slots / window reached maximum alowed " |
| 661 | "Tx size\n"); |
| 662 | break; |
| 663 | } |
| 664 | } |
| 665 | |
| 666 | LOGP(DRLCMAC, LOGL_DEBUG, "- Selected TX window: " |
| 667 | "(TS=0)\"%c%c%c%c%c%c%c%c\"(TS=7)\n", |
| 668 | ((tx_window & 0x01)) ? 'U' : '.', |
| 669 | ((tx_window & 0x02)) ? 'U' : '.', |
| 670 | ((tx_window & 0x04)) ? 'U' : '.', |
| 671 | ((tx_window & 0x08)) ? 'U' : '.', |
| 672 | ((tx_window & 0x10)) ? 'U' : '.', |
| 673 | ((tx_window & 0x20)) ? 'U' : '.', |
| 674 | ((tx_window & 0x40)) ? 'U' : '.', |
| 675 | ((tx_window & 0x80)) ? 'U' : '.'); |
| 676 | |
| 677 | if (!tx_window) { |
| 678 | LOGP(DRLCMAC, LOGL_NOTICE, "No suitable uplink slots " |
| 679 | "available\n"); |
| 680 | return -EBUSY; |
| 681 | } |
| 682 | } |
| 683 | |
| 684 | if (tbf->direction == GPRS_RLCMAC_DL_TBF) { |
| 685 | /* assign downlink */ |
| 686 | if (rx_window == 0) { |
| 687 | LOGP(DRLCMAC, LOGL_NOTICE, "No downlink slots " |
| 688 | "available\n"); |
| 689 | return -EINVAL; |
| 690 | } |
| 691 | for (ts = 0; ts < 8; ts++) { |
| 692 | if ((rx_window & (1 << ts))) { |
| 693 | LOGP(DRLCMAC, LOGL_DEBUG, "- Assigning DL TS " |
| 694 | "%d\n", ts); |
| 695 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
| 696 | pdch->dl_tbf[tbf->tfi] = tbf; |
| 697 | tbf->pdch[ts] = pdch; |
| 698 | } |
| 699 | } |
| 700 | } else { |
| 701 | /* assign uplink */ |
| 702 | if (tx_window == 0) { |
| 703 | LOGP(DRLCMAC, LOGL_NOTICE, "No uplink slots " |
| 704 | "available\n"); |
| 705 | return -EINVAL; |
| 706 | } |
| 707 | for (ts = 0; ts < 8; ts++) { |
| 708 | if ((tx_window & (1 << ts))) { |
| 709 | LOGP(DRLCMAC, LOGL_DEBUG, "- Assigning UL TS " |
| 710 | "%d\n", ts); |
| 711 | pdch = &bts->trx[tbf->trx].pdch[ts]; |
| 712 | pdch->ul_tbf[tbf->tfi] = tbf; |
| 713 | tbf->pdch[ts] = pdch; |
| 714 | tbf->dir.ul.usf[ts] = usf[ts]; |
| 715 | } |
| 716 | } |
| 717 | } |
| 718 | |
| 719 | /* the timeslot of the TX window start is always |
| 720 | * available in RX window */ |
| 721 | tbf->first_common_ts = tx_win_min; |
| 722 | |
| 723 | return 0; |
| 724 | } |
| 725 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 726 | static void tbf_unlink_pdch(struct gprs_rlcmac_tbf *tbf) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 727 | { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 728 | struct gprs_rlcmac_pdch *pdch; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 729 | int ts; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 730 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 731 | if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| 732 | for (ts = 0; ts < 8; ts++) { |
| 733 | pdch = tbf->pdch[ts]; |
| 734 | if (pdch) |
| 735 | pdch->ul_tbf[tbf->tfi] = NULL; |
| 736 | tbf->pdch[ts] = NULL; |
| 737 | } |
| 738 | } else { |
| 739 | for (ts = 0; ts < 8; ts++) { |
| 740 | pdch = tbf->pdch[ts]; |
| 741 | if (pdch) |
| 742 | pdch->dl_tbf[tbf->tfi] = NULL; |
| 743 | tbf->pdch[ts] = NULL; |
| 744 | } |
| 745 | } |
| 746 | } |
| 747 | |
| 748 | void tbf_free(struct gprs_rlcmac_tbf *tbf) |
| 749 | { |
| 750 | struct msgb *msg; |
| 751 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 752 | LOGP(DRLCMAC, LOGL_INFO, "Free %s TBF=%d with TLLI=0x%08x.\n", |
| 753 | (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tbf->tfi, |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 754 | tbf->tlli); |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 755 | if (tbf->ul_ass_state != GPRS_RLCMAC_UL_ASS_NONE) |
| 756 | LOGP(DRLCMAC, LOGL_ERROR, "Software error: Pending uplink " |
| 757 | "assignment. This may not happen, because the " |
| 758 | "assignment message never gets transmitted. Please " |
| 759 | "be shure not to free in this state. PLEASE FIX!\n"); |
| 760 | if (tbf->dl_ass_state != GPRS_RLCMAC_DL_ASS_NONE) |
| 761 | LOGP(DRLCMAC, LOGL_ERROR, "Software error: Pending downlink " |
| 762 | "assignment. This may not happen, because the " |
| 763 | "assignment message never gets transmitted. Please " |
| 764 | "be shure not to free in this state. PLEASE FIX!\n"); |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 765 | tbf_timer_stop(tbf); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 766 | while ((msg = msgb_dequeue(&tbf->llc_queue))) |
| 767 | msgb_free(msg); |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 768 | tbf_unlink_pdch(tbf); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 769 | llist_del(&tbf->list); |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 770 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF ends here **********\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 771 | talloc_free(tbf); |
| 772 | } |
| 773 | |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 774 | int tbf_update(struct gprs_rlcmac_tbf *tbf) |
| 775 | { |
| 776 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| 777 | struct gprs_rlcmac_tbf *ul_tbf = NULL; |
| 778 | int rc; |
| 779 | |
| 780 | LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF update **********\n"); |
| 781 | |
| 782 | if (tbf->direction != GPRS_RLCMAC_DL_TBF) |
| 783 | return -EINVAL; |
| 784 | |
| 785 | if (!tbf->ms_class) { |
| 786 | LOGP(DRLCMAC, LOGL_DEBUG, "- Cannot update, no class\n"); |
| 787 | return -EINVAL; |
| 788 | } |
| 789 | |
| 790 | if (tbf->tlli_valid) |
| 791 | ul_tbf = tbf_by_tlli(tbf->tlli, GPRS_RLCMAC_UL_TBF); |
| 792 | |
| 793 | tbf_unlink_pdch(tbf); |
| 794 | rc = bts->alloc_algorithm(ul_tbf, tbf, bts->alloc_algorithm_curst); |
| 795 | /* if no ressource */ |
| 796 | if (rc < 0) { |
| 797 | LOGP(DRLCMAC, LOGL_ERROR, "No ressource after update???\n"); |
| 798 | return -rc; |
| 799 | } |
| 800 | |
| 801 | return 0; |
| 802 | } |
| 803 | |
| 804 | int tbf_assign_control_ts(struct gprs_rlcmac_tbf *tbf) |
| 805 | { |
| 806 | if (tbf->control_ts == 0xff) |
| 807 | LOGP(DRLCMAC, LOGL_DEBUG, "- Setting Control TS %d\n", |
| 808 | tbf->control_ts); |
| 809 | else if (tbf->control_ts != tbf->first_common_ts) |
| 810 | LOGP(DRLCMAC, LOGL_DEBUG, "- Changing Control TS %d\n", |
| 811 | tbf->control_ts); |
| 812 | tbf->control_ts = tbf->first_common_ts; |
| 813 | |
| 814 | return 0; |
| 815 | } |
| 816 | |
| 817 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 818 | const char *tbf_state_name[] = { |
| 819 | "NULL", |
| 820 | "ASSIGN", |
| 821 | "FLOW", |
| 822 | "FINISHED", |
| 823 | "WAIT RELEASE", |
| 824 | "RELEASING", |
| 825 | }; |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 826 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 827 | void tbf_new_state(struct gprs_rlcmac_tbf *tbf, |
| 828 | enum gprs_rlcmac_tbf_state state) |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 829 | { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 830 | LOGP(DRLCMAC, LOGL_DEBUG, "%s TBF=%d changes state from %s to %s\n", |
| 831 | (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tbf->tfi, |
| 832 | tbf_state_name[tbf->state], tbf_state_name[state]); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 833 | tbf->state = state; |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 834 | } |
| 835 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 836 | void tbf_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int T, |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 837 | unsigned int seconds, unsigned int microseconds) |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 838 | { |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 839 | if (!osmo_timer_pending(&tbf->timer)) |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 840 | LOGP(DRLCMAC, LOGL_DEBUG, "Starting %s TBF=%d timer %u.\n", |
| 841 | (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 842 | tbf->tfi, T); |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 843 | else |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 844 | LOGP(DRLCMAC, LOGL_DEBUG, "Restarting %s TBF=%d timer %u " |
| 845 | "while old timer %u pending \n", |
| 846 | (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
| 847 | tbf->tfi, T, tbf->T); |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 848 | |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 849 | tbf->T = T; |
| 850 | tbf->num_T_exp = 0; |
| 851 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 852 | /* Tunning timers can be safely re-scheduled. */ |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 853 | tbf->timer.data = tbf; |
| 854 | tbf->timer.cb = &tbf_timer_cb; |
| 855 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 856 | osmo_timer_schedule(&tbf->timer, seconds, microseconds); |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 857 | } |
| 858 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 859 | void tbf_timer_stop(struct gprs_rlcmac_tbf *tbf) |
| 860 | { |
| 861 | if (osmo_timer_pending(&tbf->timer)) { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 862 | LOGP(DRLCMAC, LOGL_DEBUG, "Stopping %s TBF=%d timer %u.\n", |
| 863 | (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 864 | tbf->tfi, tbf->T); |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 865 | osmo_timer_del(&tbf->timer); |
| 866 | } |
| 867 | } |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 868 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 869 | #if 0 |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 870 | static void tbf_gsm_timer_cb(void *_tbf) |
| 871 | { |
| 872 | struct gprs_rlcmac_tbf *tbf = (struct gprs_rlcmac_tbf *)_tbf; |
| 873 | |
| 874 | tbf->num_fT_exp++; |
| 875 | |
| 876 | switch (tbf->fT) { |
| 877 | case 0: |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 878 | hier alles berdenken |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 879 | // This is timer for delay RLC/MAC data sending after Downlink Immediate Assignment on CCCH. |
| 880 | gprs_rlcmac_segment_llc_pdu(tbf); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 881 | 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] | 882 | tbf_free(tbf); |
Ivan Kluchnikov | 61a33f7 | 2012-04-12 15:22:06 +0400 | [diff] [blame] | 883 | break; |
| 884 | default: |
Ivan Kluchnikov | 856221f | 2012-06-15 09:31:29 +0400 | [diff] [blame] | 885 | 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] | 886 | } |
| 887 | } |
| 888 | |
| 889 | static void tbf_gsm_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int fT, |
| 890 | int frames) |
| 891 | { |
| 892 | if (osmo_gsm_timer_pending(&tbf->gsm_timer)) |
Ivan Kluchnikov | 856221f | 2012-06-15 09:31:29 +0400 | [diff] [blame] | 893 | 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] | 894 | tbf->fT = fT; |
| 895 | tbf->num_fT_exp = 0; |
| 896 | |
| 897 | /* FIXME: we should do this only once ? */ |
| 898 | tbf->gsm_timer.data = tbf; |
| 899 | tbf->gsm_timer.cb = &tbf_gsm_timer_cb; |
| 900 | |
| 901 | osmo_gsm_timer_schedule(&tbf->gsm_timer, frames); |
| 902 | } |
| 903 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 904 | eine stop-funktion, auch im tbf_free aufrufen |
| 905 | |
| 906 | #endif |
| 907 | |
| 908 | #if 0 |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 909 | void gprs_rlcmac_enqueue_block(bitvec *block, int len) |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 910 | { |
| 911 | struct msgb *msg = msgb_alloc(len, "rlcmac_dl"); |
| 912 | bitvec_pack(block, msgb_put(msg, len)); |
| 913 | msgb_enqueue(&block_queue, msg); |
| 914 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 915 | #endif |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 916 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 917 | /* received RLC/MAC block from L1 */ |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 918 | int gprs_rlcmac_rcv_block(uint8_t trx, uint8_t ts, uint8_t *data, uint8_t len, |
| 919 | uint32_t fn) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 920 | { |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 921 | unsigned payload = data[0] >> 6; |
| 922 | bitvec *block; |
| 923 | int rc = 0; |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 924 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 925 | switch (payload) { |
| 926 | case GPRS_RLCMAC_DATA_BLOCK: |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 927 | rc = gprs_rlcmac_rcv_data_block_acknowledged(trx, ts, data, |
| 928 | len); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 929 | break; |
| 930 | case GPRS_RLCMAC_CONTROL_BLOCK: |
| 931 | block = bitvec_alloc(len); |
| 932 | if (!block) |
| 933 | return -ENOMEM; |
| 934 | bitvec_unpack(block, data); |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 935 | rc = gprs_rlcmac_rcv_control_block(block, trx, ts, fn); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 936 | bitvec_free(block); |
| 937 | break; |
| 938 | case GPRS_RLCMAC_CONTROL_BLOCK_OPT: |
| 939 | LOGP(DRLCMAC, LOGL_NOTICE, "GPRS_RLCMAC_CONTROL_BLOCK_OPT block payload is not supported.\n"); |
| 940 | default: |
| 941 | LOGP(DRLCMAC, LOGL_NOTICE, "Unknown RLCMAC block payload.\n"); |
| 942 | rc = -EINVAL; |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 943 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 944 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 945 | return rc; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 946 | } |
| 947 | |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 948 | // GSM 04.08 9.1.18 Immediate assignment |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 949 | int write_immediate_assignment(bitvec * dest, uint8_t downlink, uint8_t ra, |
| 950 | uint32_t fn, uint8_t ta, uint16_t arfcn, uint8_t ts, uint8_t tsc, |
| 951 | uint8_t tfi, uint8_t usf, uint32_t tlli, |
| 952 | uint8_t polling, uint32_t poll_fn) |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 953 | { |
| 954 | unsigned wp = 0; |
Andreas Eversberg | 7b04501 | 2012-07-05 07:38:49 +0200 | [diff] [blame] | 955 | uint8_t plen; |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 956 | |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 957 | bitvec_write_field(dest, wp,0x0,4); // Skip Indicator |
| 958 | bitvec_write_field(dest, wp,0x6,4); // Protocol Discriminator |
| 959 | bitvec_write_field(dest, wp,0x3F,8); // Immediate Assignment Message Type |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 960 | |
| 961 | // 10.5.2.25b Dedicated mode or TBF |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 962 | bitvec_write_field(dest, wp,0x0,1); // spare |
| 963 | bitvec_write_field(dest, wp,0x0,1); // TMA : Two-message assignment: No meaning |
| 964 | bitvec_write_field(dest, wp,downlink,1); // Downlink : Downlink assignment to mobile in packet idle mode |
| 965 | 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] | 966 | |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 967 | bitvec_write_field(dest, wp,0x0,4); // Page Mode |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 968 | |
| 969 | // GSM 04.08 10.5.2.25a Packet Channel Description |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 970 | bitvec_write_field(dest, wp,0x1,5); // Channel type |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 971 | bitvec_write_field(dest, wp,ts,3); // TN |
| 972 | bitvec_write_field(dest, wp,tsc,3); // TSC |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 973 | bitvec_write_field(dest, wp,0x0,3); // non-hopping RF channel configuraion |
Andreas Eversberg | 0aed654 | 2012-06-23 10:33:16 +0200 | [diff] [blame] | 974 | bitvec_write_field(dest, wp,arfcn,10); // ARFCN |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 975 | |
| 976 | //10.5.2.30 Request Reference |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 977 | bitvec_write_field(dest, wp,ra,8); // RA |
| 978 | bitvec_write_field(dest, wp,(fn / (26 * 51)) % 32,5); // T1' |
| 979 | bitvec_write_field(dest, wp,fn % 51,6); // T3 |
| 980 | bitvec_write_field(dest, wp,fn % 26,5); // T2 |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 981 | |
| 982 | // 10.5.2.40 Timing Advance |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 983 | bitvec_write_field(dest, wp,0x0,2); // spare |
| 984 | bitvec_write_field(dest, wp,ta,6); // Timing Advance value |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 985 | |
| 986 | // No mobile allocation in non-hopping systems. |
| 987 | // A zero-length LV. Just write L=0. |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 988 | bitvec_write_field(dest, wp,0,8); |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 989 | |
Andreas Eversberg | 7b04501 | 2012-07-05 07:38:49 +0200 | [diff] [blame] | 990 | if ((wp % 8)) { |
| 991 | LOGP(DRLCMACUL, LOGL_ERROR, "Length of IMM.ASS without rest " |
| 992 | "octets is not multiple of 8 bits, PLEASE FIX!\n"); |
| 993 | exit (0); |
| 994 | } |
| 995 | plen = wp / 8; |
| 996 | |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 997 | if (downlink) |
| 998 | { |
| 999 | // GSM 04.08 10.5.2.16 IA Rest Octets |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1000 | bitvec_write_field(dest, wp, 3, 2); // "HH" |
| 1001 | bitvec_write_field(dest, wp, 1, 2); // "01" Packet Downlink Assignment |
| 1002 | bitvec_write_field(dest, wp,tlli,32); // TLLI |
| 1003 | bitvec_write_field(dest, wp,0x1,1); // switch TFI : on |
| 1004 | bitvec_write_field(dest, wp,tfi,5); // TFI |
| 1005 | bitvec_write_field(dest, wp,0x0,1); // RLC acknowledged mode |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1006 | bitvec_write_field(dest, wp,0x0,1); // ALPHA = not present |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1007 | bitvec_write_field(dest, wp,0x0,5); // GAMMA power control parameter |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1008 | bitvec_write_field(dest, wp,polling,1); // Polling Bit |
| 1009 | bitvec_write_field(dest, wp,!polling,1); // TA_VALID ??? |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1010 | bitvec_write_field(dest, wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on |
| 1011 | bitvec_write_field(dest, wp,0x0,4); // TIMING_ADVANCE_INDEX |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1012 | if (polling) { |
| 1013 | bitvec_write_field(dest, wp,0x1,1); // TBF Starting TIME present |
| 1014 | bitvec_write_field(dest, wp,(poll_fn / (26 * 51)) % 32,5); // T1' |
| 1015 | bitvec_write_field(dest, wp,poll_fn % 51,6); // T3 |
| 1016 | bitvec_write_field(dest, wp,poll_fn % 26,5); // T2 |
| 1017 | } else { |
| 1018 | bitvec_write_field(dest, wp,0x0,1); // TBF Starting TIME present |
| 1019 | } |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1020 | bitvec_write_field(dest, wp,0x0,1); // P0 not present |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1021 | // bitvec_write_field(dest, wp,0x1,1); // P0 not present |
| 1022 | // bitvec_write_field(dest, wp,0xb,4); |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1023 | } |
| 1024 | else |
| 1025 | { |
Andreas Eversberg | dfa563c | 2012-07-06 08:13:59 +0200 | [diff] [blame] | 1026 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1027 | // GMS 04.08 10.5.2.37b 10.5.2.16 |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1028 | bitvec_write_field(dest, wp, 3, 2); // "HH" |
| 1029 | bitvec_write_field(dest, wp, 0, 2); // "0" Packet Uplink Assignment |
| 1030 | bitvec_write_field(dest, wp, 1, 1); // Block Allocation : Not Single Block Allocation |
| 1031 | bitvec_write_field(dest, wp, tfi, 5); // TFI_ASSIGNMENT Temporary Flow Identity |
| 1032 | bitvec_write_field(dest, wp, 0, 1); // POLLING |
| 1033 | bitvec_write_field(dest, wp, 0, 1); // ALLOCATION_TYPE: dynamic |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 1034 | bitvec_write_field(dest, wp, usf, 3); // USF |
Andreas Eversberg | 0553408 | 2012-06-24 11:46:49 +0200 | [diff] [blame] | 1035 | bitvec_write_field(dest, wp, 0, 1); // USF_GRANULARITY |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1036 | bitvec_write_field(dest, wp, 0 , 1); // "0" power control: Not Present |
Andreas Eversberg | dfa563c | 2012-07-06 08:13:59 +0200 | [diff] [blame] | 1037 | bitvec_write_field(dest, wp, bts->initial_cs-1, 2); // CHANNEL_CODING_COMMAND |
| 1038 | bitvec_write_field(dest, wp, 1, 1); // TLLI_BLOCK_CHANNEL_CODING |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1039 | bitvec_write_field(dest, wp, 1 , 1); // "1" Alpha : Present |
| 1040 | bitvec_write_field(dest, wp, 0, 4); // Alpha |
| 1041 | bitvec_write_field(dest, wp, 0, 5); // Gamma |
| 1042 | bitvec_write_field(dest, wp, 0, 1); // TIMING_ADVANCE_INDEX_FLAG |
| 1043 | bitvec_write_field(dest, wp, 0, 1); // TBF_STARTING_TIME_FLAG |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1044 | } |
| 1045 | |
Andreas Eversberg | 7b04501 | 2012-07-05 07:38:49 +0200 | [diff] [blame] | 1046 | return plen; |
Ivan Kluchnikov | 5310d45 | 2012-04-17 22:00:31 +0400 | [diff] [blame] | 1047 | } |
| 1048 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1049 | /* generate uplink assignment */ |
| 1050 | void write_packet_uplink_assignment(bitvec * dest, uint8_t old_tfi, |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1051 | uint8_t old_downlink, uint32_t tlli, uint8_t use_tlli, |
| 1052 | struct gprs_rlcmac_tbf *tbf, uint8_t poll) |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1053 | { |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1054 | // TODO We should use our implementation of encode RLC/MAC Control messages. |
Andreas Eversberg | dfa563c | 2012-07-06 08:13:59 +0200 | [diff] [blame] | 1055 | struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1056 | unsigned wp = 0; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1057 | uint8_t ts; |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1058 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1059 | bitvec_write_field(dest, wp,0x1,2); // Payload Type |
| 1060 | bitvec_write_field(dest, wp,0x0,2); // Uplink block with TDMA framenumber (N+13) |
| 1061 | bitvec_write_field(dest, wp,poll,1); // Suppl/Polling Bit |
| 1062 | bitvec_write_field(dest, wp,0x0,3); // Uplink state flag |
| 1063 | bitvec_write_field(dest, wp,0xa,6); // MESSAGE TYPE |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1064 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1065 | bitvec_write_field(dest, wp,0x0,2); // Page Mode |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1066 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1067 | bitvec_write_field(dest, wp,0x0,1); // switch PERSIST_LEVEL: off |
| 1068 | if (use_tlli) { |
| 1069 | bitvec_write_field(dest, wp,0x2,2); // switch TLLI : on |
| 1070 | bitvec_write_field(dest, wp,tlli,32); // TLLI |
| 1071 | } else { |
| 1072 | bitvec_write_field(dest, wp,0x0,1); // switch TFI : on |
| 1073 | bitvec_write_field(dest, wp,old_downlink,1); // 0=UPLINK TFI, 1=DL TFI |
| 1074 | bitvec_write_field(dest, wp,old_tfi,5); // TFI |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1075 | } |
Ivan Kluchnikov | b2b8100 | 2012-06-04 21:57:02 +0400 | [diff] [blame] | 1076 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1077 | bitvec_write_field(dest, wp,0x0,1); // Message escape |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1078 | 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] | 1079 | bitvec_write_field(dest, wp,0x1,1); // TLLI_BLOCK_CHANNEL_CODING |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1080 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1081 | bitvec_write_field(dest, wp,0x1,1); // switch TIMING_ADVANCE_VALUE = on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1082 | bitvec_write_field(dest, wp,tbf->ta,6); // TIMING_ADVANCE_VALUE |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1083 | bitvec_write_field(dest, wp,0x0,1); // switch TIMING_ADVANCE_INDEX = off |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1084 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1085 | #if 1 |
| 1086 | bitvec_write_field(dest, wp,0x1,1); // Frequency Parameters information elements = present |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1087 | bitvec_write_field(dest, wp,tbf->tsc,3); // Training Sequence Code (TSC) |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1088 | bitvec_write_field(dest, wp,0x0,2); // ARFCN = present |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1089 | bitvec_write_field(dest, wp,tbf->arfcn,10); // ARFCN |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1090 | #else |
| 1091 | bitvec_write_field(dest, wp,0x0,1); // Frequency Parameters = off |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 1092 | #endif |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1093 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1094 | bitvec_write_field(dest, wp,0x1,2); // Dynamic Allocation |
Ivan Kluchnikov | e359423 | 2012-06-07 01:12:29 +0400 | [diff] [blame] | 1095 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1096 | bitvec_write_field(dest, wp,0x0,1); // Extended Dynamic Allocation = off |
| 1097 | bitvec_write_field(dest, wp,0x0,1); // P0 = off |
Ivan Kluchnikov | e359423 | 2012-06-07 01:12:29 +0400 | [diff] [blame] | 1098 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1099 | bitvec_write_field(dest, wp,0x0,1); // USF_GRANULARITY |
| 1100 | bitvec_write_field(dest, wp,0x1,1); // switch TFI : on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1101 | bitvec_write_field(dest, wp,tbf->tfi,5);// TFI |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1102 | |
| 1103 | bitvec_write_field(dest, wp,0x0,1); // |
| 1104 | bitvec_write_field(dest, wp,0x0,1); // TBF Starting Time = off |
| 1105 | bitvec_write_field(dest, wp,0x0,1); // Timeslot Allocation |
| 1106 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1107 | for (ts = 0; ts < 8; ts++) { |
| 1108 | if (tbf->pdch[ts]) { |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1109 | bitvec_write_field(dest, wp,0x1,1); // USF_TN(i): on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1110 | 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] | 1111 | } else |
| 1112 | bitvec_write_field(dest, wp,0x0,1); // USF_TN(i): off |
Ivan Kluchnikov | e359423 | 2012-06-07 01:12:29 +0400 | [diff] [blame] | 1113 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1114 | // bitvec_write_field(dest, wp,0x0,1); // Measurement Mapping struct not present |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1115 | } |
| 1116 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1117 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1118 | /* generate downlink assignment */ |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1119 | void write_packet_downlink_assignment(RlcMacDownlink_t * block, uint8_t old_tfi, |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1120 | uint8_t old_downlink, struct gprs_rlcmac_tbf *tbf, uint8_t poll) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1121 | { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1122 | // Packet downlink assignment TS 44.060 11.2.7 |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1123 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1124 | uint8_t tn; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1125 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1126 | block->PAYLOAD_TYPE = 0x1; // RLC/MAC control block that does not include the optional octets of the RLC/MAC control header |
| 1127 | block->RRBP = 0x0; // N+13 |
| 1128 | block->SP = poll; // RRBP field is valid |
| 1129 | block->USF = 0x0; // Uplink state flag |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1130 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1131 | block->u.Packet_Downlink_Assignment.MESSAGE_TYPE = 0x2; // Packet Downlink Assignment |
| 1132 | block->u.Packet_Downlink_Assignment.PAGE_MODE = 0x0; // Normal Paging |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1133 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1134 | block->u.Packet_Downlink_Assignment.Exist_PERSISTENCE_LEVEL = 0x0; // PERSISTENCE_LEVEL: off |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1135 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1136 | block->u.Packet_Downlink_Assignment.ID.UnionType = 0x0; // TFI = on |
| 1137 | block->u.Packet_Downlink_Assignment.ID.u.Global_TFI.UnionType = old_downlink; // 0=UPLINK TFI, 1=DL TFI |
| 1138 | 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] | 1139 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1140 | block->u.Packet_Downlink_Assignment.MAC_MODE = 0x0; // Dynamic Allocation |
| 1141 | block->u.Packet_Downlink_Assignment.RLC_MODE = 0x0; // RLC acknowledged mode |
| 1142 | 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] | 1143 | block->u.Packet_Downlink_Assignment.TIMESLOT_ALLOCATION = 0; // timeslot(s) |
| 1144 | for (tn = 0; tn < 8; tn++) { |
| 1145 | if (tbf->pdch[tn]) |
| 1146 | block->u.Packet_Downlink_Assignment.TIMESLOT_ALLOCATION |= 0x80 >> tn; // timeslot(s) |
| 1147 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1148 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1149 | 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] | 1150 | 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] | 1151 | 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] | 1152 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1153 | 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] | 1154 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1155 | block->u.Packet_Downlink_Assignment.Exist_Frequency_Parameters = 0x1; // Frequency Parameters = on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1156 | 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] | 1157 | block->u.Packet_Downlink_Assignment.Frequency_Parameters.UnionType = 0x0; // ARFCN = on |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1158 | block->u.Packet_Downlink_Assignment.Frequency_Parameters.u.ARFCN = tbf->arfcn; // ARFCN |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1159 | |
| 1160 | 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] | 1161 | block->u.Packet_Downlink_Assignment.DOWNLINK_TFI_ASSIGNMENT = tbf->tfi; // TFI |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1162 | |
| 1163 | block->u.Packet_Downlink_Assignment.Exist_Power_Control_Parameters = 0x1; // Power Control Parameters = on |
| 1164 | block->u.Packet_Downlink_Assignment.Power_Control_Parameters.ALPHA = 0x0; // ALPHA |
| 1165 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1166 | for (tn = 0; tn < 8; tn++) |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 1167 | { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1168 | if (tbf->pdch[tn]) |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1169 | { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1170 | block->u.Packet_Downlink_Assignment.Power_Control_Parameters.Slot[tn].Exist = 0x1; // Slot[i] = on |
| 1171 | 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] | 1172 | } |
| 1173 | else |
| 1174 | { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1175 | 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] | 1176 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1177 | } |
Ivan Kluchnikov | 34460b8 | 2012-06-27 18:41:04 +0400 | [diff] [blame] | 1178 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1179 | block->u.Packet_Downlink_Assignment.Exist_TBF_Starting_Time = 0x0; // TBF Starting TIME = off |
| 1180 | block->u.Packet_Downlink_Assignment.Exist_Measurement_Mapping = 0x0; // Measurement_Mapping = off |
| 1181 | block->u.Packet_Downlink_Assignment.Exist_AdditionsR99 = 0x0; // AdditionsR99 = off |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1182 | } |
| 1183 | |
| 1184 | /* generate uplink ack */ |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1185 | 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] | 1186 | uint8_t final) |
| 1187 | { |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1188 | // Packet Uplink Ack/Nack TS 44.060 11.2.28 |
| 1189 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1190 | char show_v_n[65]; |
| 1191 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1192 | uint8_t rbb = 0; |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1193 | uint16_t i, bbn; |
| 1194 | uint16_t mod_sns_half = (tbf->sns >> 1) - 1; |
| 1195 | char bit; |
| 1196 | |
| 1197 | LOGP(DRLCMACUL, LOGL_DEBUG, "Sending Ack/Nack for TBF=%d " |
| 1198 | "(final=%d)\n", tbf->tfi, final); |
| 1199 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1200 | block->PAYLOAD_TYPE = 0x1; // RLC/MAC control block that does not include the optional octets of the RLC/MAC control header |
| 1201 | block->RRBP = 0x0; // N+13 |
| 1202 | block->SP = final; // RRBP field is valid, if it is final ack |
| 1203 | block->USF = 0x0; // Uplink state flag |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1204 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1205 | block->u.Packet_Uplink_Ack_Nack.MESSAGE_TYPE = 0x9; // Packet Downlink Assignment |
| 1206 | block->u.Packet_Uplink_Ack_Nack.PAGE_MODE = 0x0; // Normal Paging |
| 1207 | block->u.Packet_Uplink_Ack_Nack.UPLINK_TFI = tbf->tfi; // Uplink TFI |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1208 | |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1209 | block->u.Packet_Uplink_Ack_Nack.UnionType = 0x0; // PU_AckNack_GPRS = on |
| 1210 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.CHANNEL_CODING_COMMAND = 0x0; // CS1 |
| 1211 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Ack_Nack_Description.FINAL_ACK_INDICATION = final; // FINAL ACK INDICATION |
| 1212 | 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] | 1213 | // RECEIVE_BLOCK_BITMAP |
| 1214 | for (i = 0, bbn = (tbf->dir.ul.v_r - 64) & mod_sns_half; i < 64; |
| 1215 | i++, bbn = (bbn + 1) & mod_sns_half) { |
| 1216 | bit = tbf->dir.ul.v_n[bbn]; |
| 1217 | if (bit == 0) |
| 1218 | bit = ' '; |
| 1219 | show_v_n[i] = bit; |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1220 | if (bit == 'R') |
| 1221 | rbb = (rbb << 1)|1; |
| 1222 | else |
| 1223 | rbb = (rbb << 1); |
| 1224 | if((i%8) == 7) |
| 1225 | { |
| 1226 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Ack_Nack_Description.RECEIVED_BLOCK_BITMAP[i/8] = rbb; |
| 1227 | rbb = 0; |
| 1228 | } |
Ivan Kluchnikov | e359423 | 2012-06-07 01:12:29 +0400 | [diff] [blame] | 1229 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 1230 | show_v_n[64] = '\0'; |
| 1231 | LOGP(DRLCMACUL, LOGL_DEBUG, "- V(N): \"%s\" R=Received " |
| 1232 | "N=Not-Received\n", show_v_n); |
Ivan Kluchnikov | ef7f28c | 2012-07-12 14:49:15 +0400 | [diff] [blame] | 1233 | |
| 1234 | 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] | 1235 | 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] | 1236 | 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] | 1237 | |
| 1238 | 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] | 1239 | 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] | 1240 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.Exist_Packet_Timing_Advance = 0x0; |
| 1241 | block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.Exist_Extension_Bits = 0x0; |
| 1242 | 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] | 1243 | } |
| 1244 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1245 | /* Send Uplink unit-data to SGSN. */ |
Andreas Eversberg | 3e372d5 | 2012-07-06 09:28:15 +0200 | [diff] [blame] | 1246 | int gprs_rlcmac_tx_ul_ud(gprs_rlcmac_tbf *tbf) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1247 | { |
| 1248 | const uint8_t qos_profile = QOS_PROFILE; |
| 1249 | struct msgb *llc_pdu; |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 1250 | unsigned msg_len = NS_HDR_LEN + BSSGP_HDR_LEN + tbf->llc_index; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1251 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 1252 | 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] | 1253 | if (!bctx) { |
| 1254 | LOGP(DBSSGP, LOGL_ERROR, "No bctx\n"); |
| 1255 | return -EIO; |
| 1256 | } |
Ivan Kluchnikov | c320d86 | 2012-03-18 15:04:48 +0400 | [diff] [blame] | 1257 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1258 | llc_pdu = msgb_alloc_headroom(msg_len, msg_len,"llc_pdu"); |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 1259 | 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] | 1260 | bssgp_tx_ul_ud(bctx, tbf->tlli, &qos_profile, llc_pdu); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1261 | |
Andreas Eversberg | 3e372d5 | 2012-07-06 09:28:15 +0200 | [diff] [blame] | 1262 | return 0; |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 1263 | } |