Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 by Holger Hans Peter Freyther |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version 2 |
| 7 | * of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | */ |
| 18 | |
| 19 | #pragma once |
| 20 | |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 21 | #ifdef __cplusplus |
| 22 | |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame] | 23 | #include "gprs_rlcmac.h" |
Holger Hans Peter Freyther | be57081 | 2013-11-07 08:01:49 +0100 | [diff] [blame] | 24 | #include "llc.h" |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 25 | #include "rlc.h" |
Jacob Erlbeck | 6835cea | 2015-08-21 15:24:02 +0200 | [diff] [blame] | 26 | #include "cxx_linuxlist.h" |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 27 | #include <gprs_debug.h> |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame] | 28 | |
Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 29 | #include <stdint.h> |
| 30 | |
Holger Hans Peter Freyther | 1702f10 | 2013-10-20 08:44:02 +0200 | [diff] [blame] | 31 | struct bssgp_bvc_ctx; |
Holger Hans Peter Freyther | 77e0597 | 2013-11-06 19:16:43 +0100 | [diff] [blame] | 32 | struct rlc_ul_header; |
Holger Hans Peter Freyther | 096f6f9 | 2013-11-07 07:21:06 +0100 | [diff] [blame] | 33 | struct msgb; |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 34 | struct pcu_l1_meas; |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 35 | class GprsMs; |
Holger Hans Peter Freyther | 1702f10 | 2013-10-20 08:44:02 +0200 | [diff] [blame] | 36 | |
Holger Hans Peter Freyther | 9e21d84 | 2013-10-16 17:48:12 +0200 | [diff] [blame] | 37 | /* |
| 38 | * TBF instance |
| 39 | */ |
| 40 | |
Holger Hans Peter Freyther | 9e21d84 | 2013-10-16 17:48:12 +0200 | [diff] [blame] | 41 | #define Tassign_agch 0,200000 /* waiting after IMM.ASS confirm */ |
| 42 | #define Tassign_pacch 2,0 /* timeout for pacch assigment */ |
| 43 | |
| 44 | enum gprs_rlcmac_tbf_state { |
| 45 | GPRS_RLCMAC_NULL = 0, /* new created TBF */ |
| 46 | GPRS_RLCMAC_ASSIGN, /* wait for downlink assignment */ |
| 47 | GPRS_RLCMAC_FLOW, /* RLC/MAC flow, resource needed */ |
| 48 | GPRS_RLCMAC_FINISHED, /* flow finished, wait for release */ |
| 49 | GPRS_RLCMAC_WAIT_RELEASE,/* wait for release or restart of DL TBF */ |
| 50 | GPRS_RLCMAC_RELEASING, /* releasing, wait to free TBI/USF */ |
| 51 | }; |
| 52 | |
| 53 | enum gprs_rlcmac_tbf_poll_state { |
| 54 | GPRS_RLCMAC_POLL_NONE = 0, |
| 55 | GPRS_RLCMAC_POLL_SCHED, /* a polling was scheduled */ |
| 56 | }; |
| 57 | |
| 58 | enum gprs_rlcmac_tbf_dl_ass_state { |
| 59 | GPRS_RLCMAC_DL_ASS_NONE = 0, |
| 60 | GPRS_RLCMAC_DL_ASS_SEND_ASS, /* send downlink assignment on next RTS */ |
| 61 | GPRS_RLCMAC_DL_ASS_WAIT_ACK, /* wait for PACKET CONTROL ACK */ |
| 62 | }; |
| 63 | |
| 64 | enum gprs_rlcmac_tbf_ul_ass_state { |
| 65 | GPRS_RLCMAC_UL_ASS_NONE = 0, |
| 66 | GPRS_RLCMAC_UL_ASS_SEND_ASS, /* send uplink assignment on next RTS */ |
| 67 | GPRS_RLCMAC_UL_ASS_WAIT_ACK, /* wait for PACKET CONTROL ACK */ |
| 68 | }; |
| 69 | |
| 70 | enum gprs_rlcmac_tbf_ul_ack_state { |
| 71 | GPRS_RLCMAC_UL_ACK_NONE = 0, |
| 72 | GPRS_RLCMAC_UL_ACK_SEND_ACK, /* send acknowledge on next RTS */ |
| 73 | GPRS_RLCMAC_UL_ACK_WAIT_ACK, /* wait for PACKET CONTROL ACK */ |
| 74 | }; |
| 75 | |
| 76 | enum gprs_rlcmac_tbf_direction { |
| 77 | GPRS_RLCMAC_DL_TBF, |
| 78 | GPRS_RLCMAC_UL_TBF |
| 79 | }; |
| 80 | |
| 81 | #define GPRS_RLCMAC_FLAG_CCCH 0 /* assignment on CCCH */ |
| 82 | #define GPRS_RLCMAC_FLAG_PACCH 1 /* assignment on PACCH */ |
| 83 | #define GPRS_RLCMAC_FLAG_UL_DATA 2 /* uplink data received */ |
| 84 | #define GPRS_RLCMAC_FLAG_DL_ACK 3 /* downlink acknowledge received */ |
| 85 | #define GPRS_RLCMAC_FLAG_TO_UL_ACK 4 |
| 86 | #define GPRS_RLCMAC_FLAG_TO_DL_ACK 5 |
| 87 | #define GPRS_RLCMAC_FLAG_TO_UL_ASS 6 |
| 88 | #define GPRS_RLCMAC_FLAG_TO_DL_ASS 7 |
| 89 | #define GPRS_RLCMAC_FLAG_TO_MASK 0xf0 /* timeout bits */ |
| 90 | |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 91 | struct llist_pods { |
| 92 | struct llist_head list; |
| 93 | void *back; |
| 94 | }; |
| 95 | |
| 96 | #define llist_pods_entry(ptr, type) \ |
| 97 | ((type *)(container_of(ptr, struct llist_pods, list)->back)) |
| 98 | |
| 99 | /** |
| 100 | * llist_pods_for_each_entry - like llist_for_each_entry, but uses |
| 101 | * struct llist_pods ->back to access the entry. |
| 102 | * This is necessary for non-PODS classes because container_of is |
| 103 | * not guaranteed to work anymore. */ |
| 104 | #define llist_pods_for_each_entry(pos, head, member, lpods) \ |
| 105 | for (lpods = llist_entry((head)->next, typeof(struct llist_pods), list), \ |
| 106 | pos = ((typeof(pos))lpods->back), \ |
| 107 | prefetch(pos->member.list.next); \ |
| 108 | &lpods->list != (head); \ |
| 109 | lpods = llist_entry(lpods->list.next, typeof(struct llist_pods), list), \ |
| 110 | pos = ((typeof(pos))lpods->back),\ |
| 111 | prefetch(pos->member.list.next)) |
| 112 | |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame] | 113 | struct gprs_rlcmac_tbf { |
Jacob Erlbeck | b6b3c7e | 2015-08-28 12:07:14 +0200 | [diff] [blame] | 114 | gprs_rlcmac_tbf(BTS *bts_, gprs_rlcmac_tbf_direction dir); |
Holger Hans Peter Freyther | 964ddb6 | 2013-10-16 17:53:23 +0200 | [diff] [blame] | 115 | |
| 116 | static void free_all(struct gprs_rlcmac_trx *trx); |
Holger Hans Peter Freyther | 4f6a4e5d | 2013-10-16 17:58:46 +0200 | [diff] [blame] | 117 | static void free_all(struct gprs_rlcmac_pdch *pdch); |
Holger Hans Peter Freyther | 964ddb6 | 2013-10-16 17:53:23 +0200 | [diff] [blame] | 118 | |
Holger Hans Peter Freyther | 1c344e2 | 2013-10-16 18:33:18 +0200 | [diff] [blame] | 119 | bool state_is(enum gprs_rlcmac_tbf_state rhs) const; |
| 120 | bool state_is_not(enum gprs_rlcmac_tbf_state rhs) const; |
| 121 | void set_state(enum gprs_rlcmac_tbf_state new_state); |
Daniel Willmann | 08e57c8 | 2014-08-15 18:11:57 +0200 | [diff] [blame] | 122 | const char *state_name() const; |
Holger Hans Peter Freyther | 1c344e2 | 2013-10-16 18:33:18 +0200 | [diff] [blame] | 123 | |
Jacob Erlbeck | adcdf15 | 2015-03-03 14:45:55 +0100 | [diff] [blame] | 124 | const char *name() const; |
| 125 | |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 126 | struct msgb *create_dl_ass(uint32_t fn); |
Holger Hans Peter Freyther | ae03f22 | 2013-10-26 21:20:51 +0200 | [diff] [blame] | 127 | struct msgb *create_ul_ass(uint32_t fn); |
Holger Hans Peter Freyther | 2db7e7e | 2013-10-26 20:45:35 +0200 | [diff] [blame] | 128 | |
Jacob Erlbeck | 10ed795 | 2015-06-02 11:37:22 +0200 | [diff] [blame] | 129 | GprsMs *ms() const; |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 130 | void set_ms(GprsMs *ms); |
| 131 | |
Holger Hans Peter Freyther | 8f399de | 2013-12-25 20:22:35 +0100 | [diff] [blame] | 132 | uint8_t tsc() const; |
Holger Hans Peter Freyther | a1da251 | 2013-11-07 07:32:51 +0100 | [diff] [blame] | 133 | |
Holger Hans Peter Freyther | 7380bab | 2013-10-16 18:09:19 +0200 | [diff] [blame] | 134 | int rlcmac_diag(); |
Holger Hans Peter Freyther | 964ddb6 | 2013-10-16 17:53:23 +0200 | [diff] [blame] | 135 | |
Jacob Erlbeck | e0c734d | 2015-07-03 14:03:33 +0200 | [diff] [blame] | 136 | int update(); |
Holger Hans Peter Freyther | af8094d | 2013-10-26 17:56:15 +0200 | [diff] [blame] | 137 | void handle_timeout(); |
Holger Hans Peter Freyther | 86300bb | 2013-10-26 18:01:35 +0200 | [diff] [blame] | 138 | void stop_timer(); |
| 139 | void stop_t3191(); |
Jacob Erlbeck | 91ff7d1 | 2015-09-01 11:20:29 +0200 | [diff] [blame] | 140 | int establish_dl_tbf_on_pacch(); |
Holger Hans Peter Freyther | aa9c326 | 2013-10-26 17:49:36 +0200 | [diff] [blame] | 141 | |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 142 | void poll_timeout(); |
| 143 | |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 144 | /** tlli handling */ |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 145 | uint32_t tlli() const; |
| 146 | bool is_tlli_valid() const; |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 147 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 148 | /** MS updating */ |
Jacob Erlbeck | be0cbc1 | 2015-05-18 14:35:11 +0200 | [diff] [blame] | 149 | void update_ms(uint32_t tlli, enum gprs_rlcmac_tbf_direction); |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 150 | |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 151 | uint8_t tfi() const; |
| 152 | |
Holger Hans Peter Freyther | 5464c9b | 2013-10-27 20:57:35 +0100 | [diff] [blame] | 153 | const char *imsi() const; |
| 154 | void assign_imsi(const char *imsi); |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 155 | uint8_t ta() const; |
| 156 | void set_ta(uint8_t); |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 157 | uint8_t ms_class() const; |
| 158 | void set_ms_class(uint8_t); |
Jacob Erlbeck | a700dd9 | 2015-06-02 16:00:41 +0200 | [diff] [blame] | 159 | uint8_t current_cs() const; |
Jacob Erlbeck | 6dbe822 | 2015-05-29 10:37:09 +0200 | [diff] [blame] | 160 | gprs_llc_queue *llc_queue(); |
| 161 | const gprs_llc_queue *llc_queue() const; |
Holger Hans Peter Freyther | 5464c9b | 2013-10-27 20:57:35 +0100 | [diff] [blame] | 162 | |
Holger Hans Peter Freyther | a004799 | 2014-01-16 10:07:20 +0100 | [diff] [blame] | 163 | time_t created_ts() const; |
Jacob Erlbeck | 617c712 | 2015-06-30 09:18:30 +0200 | [diff] [blame] | 164 | uint8_t dl_slots() const; |
| 165 | uint8_t ul_slots() const; |
Daniel Willmann | 80367aa | 2014-01-15 17:40:28 +0100 | [diff] [blame] | 166 | |
Jacob Erlbeck | 5643f35 | 2015-11-27 16:17:40 +0100 | [diff] [blame] | 167 | /* EGPRS */ |
| 168 | bool is_egprs_enabled() const; |
| 169 | void enable_egprs(); |
| 170 | void disable_egprs(); |
| 171 | |
Holger Hans Peter Freyther | 7a5f3c2 | 2013-11-26 13:08:12 +0100 | [diff] [blame] | 172 | /* attempt to make things a bit more fair */ |
| 173 | void rotate_in_list(); |
| 174 | |
Jacob Erlbeck | 6835cea | 2015-08-21 15:24:02 +0200 | [diff] [blame] | 175 | LListHead<gprs_rlcmac_tbf>& ms_list() {return this->m_ms_list;} |
| 176 | const LListHead<gprs_rlcmac_tbf>& ms_list() const {return this->m_ms_list;} |
| 177 | |
Daniel Willmann | 1b3864f | 2014-07-30 13:25:19 +0200 | [diff] [blame] | 178 | struct llist_pods list; |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame] | 179 | uint32_t state_flags; |
| 180 | enum gprs_rlcmac_tbf_direction direction; |
Holger Hans Peter Freyther | 743bafa | 2013-09-29 07:50:50 +0200 | [diff] [blame] | 181 | struct gprs_rlcmac_trx *trx; |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame] | 182 | uint8_t first_ts; /* first TS used by TBF */ |
| 183 | uint8_t first_common_ts; /* first TS that the phone can send and |
| 184 | reveive simultaniously */ |
| 185 | uint8_t control_ts; /* timeslot control messages and polling */ |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame] | 186 | struct gprs_rlcmac_pdch *pdch[8]; /* list of PDCHs allocated to TBF */ |
Holger Hans Peter Freyther | 28e5378 | 2013-11-06 20:23:56 +0100 | [diff] [blame] | 187 | |
| 188 | gprs_llc m_llc; |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame] | 189 | |
| 190 | enum gprs_rlcmac_tbf_dl_ass_state dl_ass_state; |
| 191 | enum gprs_rlcmac_tbf_ul_ass_state ul_ass_state; |
| 192 | enum gprs_rlcmac_tbf_ul_ack_state ul_ack_state; |
| 193 | |
| 194 | enum gprs_rlcmac_tbf_poll_state poll_state; |
| 195 | uint32_t poll_fn; /* frame number to poll */ |
| 196 | |
Holger Hans Peter Freyther | 9241fd0 | 2013-11-13 19:51:55 +0100 | [diff] [blame] | 197 | gprs_rlc m_rlc; |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame] | 198 | |
| 199 | uint8_t n3105; /* N3105 counter */ |
| 200 | |
| 201 | struct osmo_timer_list timer; |
| 202 | unsigned int T; /* Txxxx number */ |
| 203 | unsigned int num_T_exp; /* number of consecutive T expirations */ |
| 204 | |
| 205 | struct osmo_gsm_timer_list gsm_timer; |
| 206 | unsigned int fT; /* fTxxxx number */ |
| 207 | unsigned int num_fT_exp; /* number of consecutive fT expirations */ |
| 208 | |
Jacob Erlbeck | b6b3c7e | 2015-08-28 12:07:14 +0200 | [diff] [blame] | 209 | struct Meas { |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame] | 210 | struct timeval rssi_tv; /* timestamp for rssi calculation */ |
| 211 | int32_t rssi_sum; /* sum of rssi values */ |
| 212 | int rssi_num; /* number of rssi values added since rssi_tv */ |
Jacob Erlbeck | b6b3c7e | 2015-08-28 12:07:14 +0200 | [diff] [blame] | 213 | |
| 214 | Meas(); |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame] | 215 | } meas; |
| 216 | |
Holger Hans Peter Freyther | 1c344e2 | 2013-10-16 18:33:18 +0200 | [diff] [blame] | 217 | /* these should become protected but only after gprs_rlcmac_data.c |
| 218 | * stops to iterate over all tbf in its current form */ |
| 219 | enum gprs_rlcmac_tbf_state state; |
Holger Hans Peter Freyther | 9f0c1d2 | 2013-10-19 21:24:34 +0200 | [diff] [blame] | 220 | |
Daniel Willmann | 73191a4 | 2014-05-30 17:58:00 +0200 | [diff] [blame] | 221 | /* Remember if the tbf was in wait_release state when we want to |
| 222 | * schedule a new dl assignment */ |
| 223 | uint8_t was_releasing; |
| 224 | |
Daniel Willmann | cf1fae7 | 2014-05-30 17:58:01 +0200 | [diff] [blame] | 225 | /* Can/should we upgrade this tbf to use multiple slots? */ |
| 226 | uint8_t upgrade_to_multislot; |
| 227 | |
Holger Hans Peter Freyther | 9f0c1d2 | 2013-10-19 21:24:34 +0200 | [diff] [blame] | 228 | /* store the BTS this TBF belongs to */ |
| 229 | BTS *bts; |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 230 | |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 231 | /* |
| 232 | * private fields. We can't make it private as it is breaking the |
| 233 | * llist macros. |
| 234 | */ |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 235 | uint8_t m_tfi; |
Holger Hans Peter Freyther | a004799 | 2014-01-16 10:07:20 +0100 | [diff] [blame] | 236 | time_t m_created_ts; |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 237 | |
Holger Hans Peter Freyther | d9262b3 | 2013-10-26 20:12:59 +0200 | [diff] [blame] | 238 | protected: |
| 239 | gprs_rlcmac_bts *bts_data() const; |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 240 | |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 241 | int extract_tlli(const uint8_t *data, const size_t len); |
Jacob Erlbeck | 28c40b1 | 2015-08-16 18:19:32 +0200 | [diff] [blame] | 242 | void merge_and_clear_ms(GprsMs *old_ms); |
Holger Hans Peter Freyther | 4c06d91 | 2013-11-25 23:05:26 +0100 | [diff] [blame] | 243 | |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 244 | static const char *tbf_state_name[6]; |
Jacob Erlbeck | adcdf15 | 2015-03-03 14:45:55 +0100 | [diff] [blame] | 245 | |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 246 | class GprsMs *m_ms; |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 247 | |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 248 | /* Fields to take the TA/MS class values if no MS is associated */ |
Jacob Erlbeck | 9200ce6 | 2015-05-22 17:48:04 +0200 | [diff] [blame] | 249 | uint8_t m_ta; |
Jacob Erlbeck | befc760 | 2015-06-02 12:33:30 +0200 | [diff] [blame] | 250 | uint8_t m_ms_class; |
Jacob Erlbeck | 6dbe822 | 2015-05-29 10:37:09 +0200 | [diff] [blame] | 251 | |
Jacob Erlbeck | adcdf15 | 2015-03-03 14:45:55 +0100 | [diff] [blame] | 252 | private: |
Jacob Erlbeck | 6835cea | 2015-08-21 15:24:02 +0200 | [diff] [blame] | 253 | LListHead<gprs_rlcmac_tbf> m_ms_list; |
Jacob Erlbeck | 5643f35 | 2015-11-27 16:17:40 +0100 | [diff] [blame] | 254 | bool m_egprs_enabled; |
Jacob Erlbeck | 6835cea | 2015-08-21 15:24:02 +0200 | [diff] [blame] | 255 | |
Jacob Erlbeck | adcdf15 | 2015-03-03 14:45:55 +0100 | [diff] [blame] | 256 | mutable char m_name_buf[60]; |
Holger Hans Peter Freyther | 099535a | 2013-10-16 17:42:31 +0200 | [diff] [blame] | 257 | }; |
| 258 | |
Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 259 | |
Daniel Willmann | 0d12a2f | 2014-07-10 17:44:07 +0200 | [diff] [blame] | 260 | struct gprs_rlcmac_ul_tbf *tbf_alloc_ul(struct gprs_rlcmac_bts *bts, |
Jacob Erlbeck | 86b6f05 | 2015-11-27 15:17:34 +0100 | [diff] [blame] | 261 | int8_t use_trx, uint8_t ms_class, uint8_t egprs_ms_class, |
Jacob Erlbeck | e2e004e | 2015-06-18 17:16:26 +0200 | [diff] [blame] | 262 | uint32_t tlli, uint8_t ta, GprsMs *ms); |
Holger Hans Peter Freyther | 9e21d84 | 2013-10-16 17:48:12 +0200 | [diff] [blame] | 263 | |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 264 | struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_tbf(struct gprs_rlcmac_bts *bts, |
Jacob Erlbeck | 5879c64 | 2015-07-10 10:41:36 +0200 | [diff] [blame] | 265 | GprsMs *ms, int8_t use_trx, |
Jacob Erlbeck | 86b6f05 | 2015-11-27 15:17:34 +0100 | [diff] [blame] | 266 | uint8_t ms_class, uint8_t egprs_ms_class, uint8_t single_slot); |
Daniel Willmann | 48aa0b0 | 2014-07-16 18:54:10 +0200 | [diff] [blame] | 267 | |
| 268 | struct gprs_rlcmac_dl_tbf *tbf_alloc_dl_tbf(struct gprs_rlcmac_bts *bts, |
Jacob Erlbeck | 5879c64 | 2015-07-10 10:41:36 +0200 | [diff] [blame] | 269 | GprsMs *ms, int8_t use_trx, |
Jacob Erlbeck | 86b6f05 | 2015-11-27 15:17:34 +0100 | [diff] [blame] | 270 | uint8_t ms_class, uint8_t egprs_ms_class, uint8_t single_slot); |
Holger Hans Peter Freyther | 9e21d84 | 2013-10-16 17:48:12 +0200 | [diff] [blame] | 271 | |
Holger Hans Peter Freyther | 9e21d84 | 2013-10-16 17:48:12 +0200 | [diff] [blame] | 272 | void tbf_free(struct gprs_rlcmac_tbf *tbf); |
| 273 | |
Holger Hans Peter Freyther | 9e21d84 | 2013-10-16 17:48:12 +0200 | [diff] [blame] | 274 | int tbf_assign_control_ts(struct gprs_rlcmac_tbf *tbf); |
| 275 | |
Holger Hans Peter Freyther | 9e21d84 | 2013-10-16 17:48:12 +0200 | [diff] [blame] | 276 | void tbf_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int T, |
| 277 | unsigned int seconds, unsigned int microseconds); |
| 278 | |
Holger Hans Peter Freyther | 1c344e2 | 2013-10-16 18:33:18 +0200 | [diff] [blame] | 279 | inline bool gprs_rlcmac_tbf::state_is(enum gprs_rlcmac_tbf_state rhs) const |
| 280 | { |
| 281 | return state == rhs; |
| 282 | } |
| 283 | |
| 284 | inline bool gprs_rlcmac_tbf::state_is_not(enum gprs_rlcmac_tbf_state rhs) const |
| 285 | { |
| 286 | return state != rhs; |
| 287 | } |
| 288 | |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 289 | const char *tbf_name(gprs_rlcmac_tbf *tbf); |
| 290 | |
Daniel Willmann | 08e57c8 | 2014-08-15 18:11:57 +0200 | [diff] [blame] | 291 | inline const char *gprs_rlcmac_tbf::state_name() const |
| 292 | { |
| 293 | return tbf_state_name[state]; |
| 294 | } |
| 295 | |
Holger Hans Peter Freyther | 1c344e2 | 2013-10-16 18:33:18 +0200 | [diff] [blame] | 296 | inline void gprs_rlcmac_tbf::set_state(enum gprs_rlcmac_tbf_state new_state) |
| 297 | { |
Daniel Willmann | eb10024 | 2014-08-08 11:43:53 +0200 | [diff] [blame] | 298 | LOGP(DRLCMAC, LOGL_DEBUG, "%s changes state from %s to %s\n", |
| 299 | tbf_name(this), |
| 300 | tbf_state_name[state], tbf_state_name[new_state]); |
Holger Hans Peter Freyther | 1c344e2 | 2013-10-16 18:33:18 +0200 | [diff] [blame] | 301 | state = new_state; |
| 302 | } |
Holger Hans Peter Freyther | bd449f5 | 2013-10-27 16:39:36 +0100 | [diff] [blame] | 303 | |
Jacob Erlbeck | 10ed795 | 2015-06-02 11:37:22 +0200 | [diff] [blame] | 304 | inline GprsMs *gprs_rlcmac_tbf::ms() const |
Jacob Erlbeck | fecece0 | 2015-05-08 12:13:08 +0200 | [diff] [blame] | 305 | { |
| 306 | return m_ms; |
| 307 | } |
| 308 | |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 309 | inline bool gprs_rlcmac_tbf::is_tlli_valid() const |
| 310 | { |
Jacob Erlbeck | 767193e | 2015-05-20 12:06:46 +0200 | [diff] [blame] | 311 | return tlli() != 0; |
Holger Hans Peter Freyther | 474685e | 2013-10-27 17:01:14 +0100 | [diff] [blame] | 312 | } |
| 313 | |
Holger Hans Peter Freyther | 34f6e5e | 2013-10-27 20:31:47 +0100 | [diff] [blame] | 314 | inline uint8_t gprs_rlcmac_tbf::tfi() const |
| 315 | { |
| 316 | return m_tfi; |
| 317 | } |
| 318 | |
Holger Hans Peter Freyther | a004799 | 2014-01-16 10:07:20 +0100 | [diff] [blame] | 319 | inline time_t gprs_rlcmac_tbf::created_ts() const |
Daniel Willmann | 80367aa | 2014-01-15 17:40:28 +0100 | [diff] [blame] | 320 | { |
Holger Hans Peter Freyther | a004799 | 2014-01-16 10:07:20 +0100 | [diff] [blame] | 321 | return m_created_ts; |
Daniel Willmann | 80367aa | 2014-01-15 17:40:28 +0100 | [diff] [blame] | 322 | } |
| 323 | |
Jacob Erlbeck | 5643f35 | 2015-11-27 16:17:40 +0100 | [diff] [blame] | 324 | inline bool gprs_rlcmac_tbf::is_egprs_enabled() const |
| 325 | { |
| 326 | return m_egprs_enabled; |
| 327 | } |
| 328 | |
| 329 | inline void gprs_rlcmac_tbf::enable_egprs() |
| 330 | { |
| 331 | m_egprs_enabled = true; |
| 332 | } |
| 333 | |
| 334 | inline void gprs_rlcmac_tbf::disable_egprs() |
| 335 | { |
| 336 | m_egprs_enabled = false; |
| 337 | } |
| 338 | |
Daniel Willmann | 078bb71 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 339 | struct gprs_rlcmac_dl_tbf : public gprs_rlcmac_tbf { |
Jacob Erlbeck | b6b3c7e | 2015-08-28 12:07:14 +0200 | [diff] [blame] | 340 | gprs_rlcmac_dl_tbf(BTS *bts); |
Jacob Erlbeck | 444bc82 | 2015-08-20 17:49:03 +0200 | [diff] [blame] | 341 | |
Jacob Erlbeck | d0261b7 | 2015-04-02 13:58:09 +0200 | [diff] [blame] | 342 | void cleanup(); |
| 343 | |
Daniel Willmann | 3016888 | 2014-08-07 12:48:29 +0200 | [diff] [blame] | 344 | /* dispatch Unitdata.DL messages */ |
| 345 | static int handle(struct gprs_rlcmac_bts *bts, |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 346 | const uint32_t tlli, const uint32_t old_tlli, |
| 347 | const char *imsi, const uint8_t ms_class, |
Daniel Willmann | 3016888 | 2014-08-07 12:48:29 +0200 | [diff] [blame] | 348 | const uint16_t delay_csec, const uint8_t *data, const uint16_t len); |
| 349 | |
Daniel Willmann | 538ac5b | 2014-07-30 19:12:27 +0200 | [diff] [blame] | 350 | int append_data(const uint8_t ms_class, |
| 351 | const uint16_t pdu_delay_csec, |
| 352 | const uint8_t *data, const uint16_t len); |
| 353 | |
Daniel Willmann | 6c813fc | 2014-07-30 19:12:27 +0200 | [diff] [blame] | 354 | int rcvd_dl_ack(uint8_t final, uint8_t ssn, uint8_t *rbb); |
Daniel Willmann | b8f2601 | 2014-07-30 19:12:28 +0200 | [diff] [blame] | 355 | struct msgb *create_dl_acked_block(uint32_t fn, uint8_t ts); |
Jacob Erlbeck | 7c44415 | 2015-03-12 12:08:54 +0100 | [diff] [blame] | 356 | void request_dl_ack(); |
Jacob Erlbeck | eceb910 | 2015-03-20 14:41:50 +0100 | [diff] [blame] | 357 | bool need_control_ts() const; |
| 358 | bool have_data() const; |
Jacob Erlbeck | 005ee7f | 2015-03-20 14:53:54 +0100 | [diff] [blame] | 359 | int frames_since_last_poll(unsigned fn) const; |
Jacob Erlbeck | 3bed5d1 | 2015-03-19 11:22:38 +0100 | [diff] [blame] | 360 | int frames_since_last_drain(unsigned fn) const; |
| 361 | bool keep_open(unsigned fn) const; |
Jacob Erlbeck | 91ff7d1 | 2015-09-01 11:20:29 +0200 | [diff] [blame] | 362 | int release(); |
Jacob Erlbeck | 5643f35 | 2015-11-27 16:17:40 +0100 | [diff] [blame] | 363 | void enable_egprs(); |
Jacob Erlbeck | eceb910 | 2015-03-20 14:41:50 +0100 | [diff] [blame] | 364 | |
| 365 | bool is_control_ts(uint8_t ts) const { |
| 366 | return ts == control_ts; |
| 367 | } |
Daniel Willmann | b8f2601 | 2014-07-30 19:12:28 +0200 | [diff] [blame] | 368 | |
Daniel Willmann | cf706b0 | 2014-08-07 17:35:22 +0200 | [diff] [blame] | 369 | /* TODO: add the gettimeofday as parameter */ |
| 370 | struct msgb *llc_dequeue(bssgp_bvc_ctx *bctx); |
| 371 | |
Daniel Willmann | 6a8a1dc | 2014-08-07 15:14:08 +0200 | [diff] [blame] | 372 | /* Please note that all variables here will be reset when changing |
| 373 | * from WAIT RELEASE back to FLOW state (re-use of TBF). |
| 374 | * All states that need reset must be in this struct, so this is why |
| 375 | * variables are in both (dl and ul) structs and not outside union. |
| 376 | */ |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 377 | gprs_rlc_dl_window m_window; |
| 378 | int32_t m_tx_counter; /* count all transmitted blocks */ |
| 379 | uint8_t m_wait_confirm; /* wait for CCCH IMM.ASS cnf */ |
Jacob Erlbeck | 7c44415 | 2015-03-12 12:08:54 +0100 | [diff] [blame] | 380 | bool m_dl_ack_requested; |
Jacob Erlbeck | 005ee7f | 2015-03-20 14:53:54 +0100 | [diff] [blame] | 381 | int32_t m_last_dl_poll_fn; |
Jacob Erlbeck | 3bed5d1 | 2015-03-19 11:22:38 +0100 | [diff] [blame] | 382 | int32_t m_last_dl_drained_fn; |
Daniel Willmann | 6a8a1dc | 2014-08-07 15:14:08 +0200 | [diff] [blame] | 383 | |
Jacob Erlbeck | b6b3c7e | 2015-08-28 12:07:14 +0200 | [diff] [blame] | 384 | struct BandWidth { |
Daniel Willmann | 418a423 | 2014-08-08 11:21:04 +0200 | [diff] [blame] | 385 | struct timeval dl_bw_tv; /* timestamp for dl bw calculation */ |
| 386 | uint32_t dl_bw_octets; /* number of octets since bw_tv */ |
| 387 | |
| 388 | struct timeval dl_loss_tv; /* timestamp for loss calculation */ |
| 389 | uint16_t dl_loss_lost; /* sum of lost packets */ |
| 390 | uint16_t dl_loss_received; /* sum of received packets */ |
Jacob Erlbeck | b6b3c7e | 2015-08-28 12:07:14 +0200 | [diff] [blame] | 391 | |
| 392 | BandWidth(); |
Daniel Willmann | 418a423 | 2014-08-08 11:21:04 +0200 | [diff] [blame] | 393 | } m_bw; |
| 394 | |
Daniel Willmann | b8f2601 | 2014-07-30 19:12:28 +0200 | [diff] [blame] | 395 | protected: |
Jacob Erlbeck | 2db0f08 | 2015-09-07 18:49:00 +0200 | [diff] [blame] | 396 | struct ana_result { |
| 397 | unsigned received_packets; |
| 398 | unsigned lost_packets; |
| 399 | unsigned received_bytes; |
| 400 | unsigned lost_bytes; |
| 401 | }; |
| 402 | |
Daniel Willmann | b8f2601 | 2014-07-30 19:12:28 +0200 | [diff] [blame] | 403 | struct msgb *create_new_bsn(const uint32_t fn, const uint8_t ts); |
| 404 | struct msgb *create_dl_acked_block(const uint32_t fn, const uint8_t ts, |
Jacob Erlbeck | 7c44415 | 2015-03-12 12:08:54 +0100 | [diff] [blame] | 405 | const int index); |
Daniel Willmann | 3016888 | 2014-08-07 12:48:29 +0200 | [diff] [blame] | 406 | int update_window(const uint8_t ssn, const uint8_t *rbb); |
| 407 | int maybe_start_new_window(); |
| 408 | bool dl_window_stalled() const; |
Jacob Erlbeck | 409efa1 | 2015-06-12 14:06:09 +0200 | [diff] [blame] | 409 | void reuse_tbf(); |
Jacob Erlbeck | d0261b7 | 2015-04-02 13:58:09 +0200 | [diff] [blame] | 410 | void start_llc_timer(); |
Jacob Erlbeck | 2db0f08 | 2015-09-07 18:49:00 +0200 | [diff] [blame] | 411 | int analyse_errors(char *show_rbb, uint8_t ssn, ana_result *res); |
Jacob Erlbeck | 409efa1 | 2015-06-12 14:06:09 +0200 | [diff] [blame] | 412 | void schedule_next_frame(); |
Jacob Erlbeck | d0261b7 | 2015-04-02 13:58:09 +0200 | [diff] [blame] | 413 | |
| 414 | struct osmo_timer_list m_llc_timer; |
Daniel Willmann | 078bb71 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 415 | }; |
| 416 | |
| 417 | struct gprs_rlcmac_ul_tbf : public gprs_rlcmac_tbf { |
Jacob Erlbeck | b6b3c7e | 2015-08-28 12:07:14 +0200 | [diff] [blame] | 418 | gprs_rlcmac_ul_tbf(BTS *bts); |
Jacob Erlbeck | 444bc82 | 2015-08-20 17:49:03 +0200 | [diff] [blame] | 419 | |
Daniel Willmann | 350f64d | 2014-08-07 14:54:11 +0200 | [diff] [blame] | 420 | struct msgb *create_ul_ack(uint32_t fn); |
| 421 | |
| 422 | /* blocks were acked */ |
Jacob Erlbeck | 20f6fd1 | 2015-06-08 11:05:45 +0200 | [diff] [blame] | 423 | int rcv_data_block_acknowledged(const uint8_t *data, size_t len, |
| 424 | struct pcu_l1_meas *meas); |
Daniel Willmann | 350f64d | 2014-08-07 14:54:11 +0200 | [diff] [blame] | 425 | |
Daniel Willmann | e2732e2 | 2014-08-07 17:32:01 +0200 | [diff] [blame] | 426 | /* TODO: extract LLC class? */ |
| 427 | int assemble_forward_llc(const gprs_rlc_data *data); |
| 428 | int snd_ul_ud(); |
| 429 | |
Daniel Willmann | 6a8a1dc | 2014-08-07 15:14:08 +0200 | [diff] [blame] | 430 | /* Please note that all variables here will be reset when changing |
| 431 | * from WAIT RELEASE back to FLOW state (re-use of TBF). |
| 432 | * All states that need reset must be in this struct, so this is why |
| 433 | * variables are in both (dl and ul) structs and not outside union. |
| 434 | */ |
Daniel Willmann | 7e994e3 | 2014-08-07 15:49:21 +0200 | [diff] [blame] | 435 | gprs_rlc_ul_window m_window; |
| 436 | int32_t m_rx_counter; /* count all received blocks */ |
| 437 | uint8_t m_n3103; /* N3103 counter */ |
| 438 | uint8_t m_usf[8]; /* list USFs per PDCH (timeslot) */ |
| 439 | uint8_t m_contention_resolution_done; /* set after done */ |
| 440 | uint8_t m_final_ack_sent; /* set if we sent final ack */ |
Daniel Willmann | 6a8a1dc | 2014-08-07 15:14:08 +0200 | [diff] [blame] | 441 | |
Daniel Willmann | 350f64d | 2014-08-07 14:54:11 +0200 | [diff] [blame] | 442 | protected: |
| 443 | void maybe_schedule_uplink_acknack(const rlc_ul_header *rh); |
Daniel Willmann | 078bb71 | 2014-07-10 17:44:06 +0200 | [diff] [blame] | 444 | }; |
| 445 | |
Jacob Erlbeck | ac89a55 | 2015-06-29 14:18:46 +0200 | [diff] [blame] | 446 | inline enum gprs_rlcmac_tbf_direction reverse(enum gprs_rlcmac_tbf_direction dir) |
| 447 | { |
| 448 | return (enum gprs_rlcmac_tbf_direction) |
| 449 | ((int)GPRS_RLCMAC_UL_TBF - (int)dir + (int)GPRS_RLCMAC_DL_TBF); |
| 450 | } |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 451 | #endif |
Holger Hans Peter Freyther | 321f3c3 | 2013-11-23 16:06:54 +0100 | [diff] [blame] | 452 | |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 453 | #ifdef __cplusplus |
| 454 | extern "C" { |
| 455 | #endif |
| 456 | #include <osmocom/vty/command.h> |
| 457 | #include <osmocom/vty/vty.h> |
| 458 | |
Jacob Erlbeck | c0c580c | 2015-04-30 15:59:01 +0200 | [diff] [blame] | 459 | void tbf_print_vty_info(struct vty *vty, struct llist_head *tbf); |
Daniel Willmann | afa72f5 | 2014-01-15 17:06:19 +0100 | [diff] [blame] | 460 | #ifdef __cplusplus |
| 461 | } |
| 462 | #endif |