Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 1 | /* rlc header descriptions |
| 2 | * |
| 3 | * Copyright (C) 2012 Ivan Klyuchnikov |
| 4 | * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu> |
| 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 | #pragma once |
| 21 | |
Jacob Erlbeck | 4abc686 | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 22 | #include "gprs_coding_scheme.h" |
| 23 | |
Jacob Erlbeck | 4aa78a8 | 2015-12-14 11:13:30 +0100 | [diff] [blame] | 24 | #include <osmocom/core/endian.h> |
| 25 | |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 26 | #include <stdint.h> |
| 27 | |
Jacob Erlbeck | 8f8197f | 2015-12-28 13:51:44 +0100 | [diff] [blame] | 28 | #define RLC_GPRS_SNS 128 /* GPRS, must be power of 2 */ |
| 29 | #define RLC_GPRS_WS 64 /* max window size */ |
Jacob Erlbeck | 8f8197f | 2015-12-28 13:51:44 +0100 | [diff] [blame] | 30 | #define RLC_EGPRS_MIN_WS 64 /* min window size */ |
| 31 | #define RLC_EGPRS_MAX_WS 1024 /* min window size */ |
| 32 | #define RLC_EGPRS_SNS 2048 /* EGPRS, must be power of 2 */ |
Jacob Erlbeck | d675249 | 2016-02-02 18:12:46 +0100 | [diff] [blame] | 33 | #define RLC_EGPRS_MAX_BSN_DELTA 512 |
Jacob Erlbeck | 8f8197f | 2015-12-28 13:51:44 +0100 | [diff] [blame] | 34 | #define RLC_MAX_SNS RLC_EGPRS_SNS |
Jacob Erlbeck | eb08f86 | 2016-02-05 17:07:12 +0100 | [diff] [blame] | 35 | #define RLC_MAX_WS RLC_EGPRS_MAX_WS |
Jacob Erlbeck | 8f8197f | 2015-12-28 13:51:44 +0100 | [diff] [blame] | 36 | #define RLC_MAX_LEN 74 /* MCS-9 data unit */ |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 37 | |
Holger Hans Peter Freyther | 35cc1c0 | 2014-07-02 14:48:44 +0200 | [diff] [blame] | 38 | struct BTS; |
Holger Hans Peter Freyther | cbb00eb | 2013-11-25 23:26:06 +0100 | [diff] [blame] | 39 | struct gprs_rlc_v_n; |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 40 | |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 41 | /* The state of a BSN in the send/receive window */ |
| 42 | enum gprs_rlc_ul_bsn_state { |
| 43 | GPRS_RLC_UL_BSN_INVALID, |
| 44 | GPRS_RLC_UL_BSN_RECEIVED, |
| 45 | GPRS_RLC_UL_BSN_MISSING, |
| 46 | GPRS_RLC_UL_BSN_MAX, |
| 47 | }; |
| 48 | |
| 49 | enum gprs_rlc_dl_bsn_state { |
| 50 | GPRS_RLC_DL_BSN_INVALID, |
| 51 | GPRS_RLC_DL_BSN_NACKED, |
| 52 | GPRS_RLC_DL_BSN_ACKED, |
| 53 | GPRS_RLC_DL_BSN_UNACKED, |
| 54 | GPRS_RLC_DL_BSN_RESEND, |
| 55 | GPRS_RLC_DL_BSN_MAX, |
| 56 | }; |
| 57 | |
Aravind Sirsikar | 7a05b03 | 2016-03-23 18:29:45 +0530 | [diff] [blame] | 58 | /* |
| 59 | * Valid puncturing scheme values |
| 60 | * TS 44.060 10.4.8a.3.1, 10.4.8a.2.1, 10.4.8a.1.1 |
| 61 | */ |
| 62 | enum egprs_puncturing_values { |
| 63 | EGPRS_PS_1, |
| 64 | EGPRS_PS_2, |
| 65 | EGPRS_PS_3, |
| 66 | EGPRS_PS_INVALID, |
| 67 | }; |
| 68 | |
| 69 | /* |
| 70 | * EGPRS_MAX_PS_NUM_2 is valid for MCS 1,2,5,6. |
| 71 | * And EGPRS_MAX_PS_NUM_3 is valid for MCS 3,4,7,8,9 |
| 72 | * TS 44.060 10.4.8a.3.1, 10.4.8a.2.1, 10.4.8a.1.1 |
| 73 | */ |
| 74 | enum egprs_puncturing_types { |
| 75 | EGPRS_MAX_PS_NUM_2 = 2, |
| 76 | EGPRS_MAX_PS_NUM_3, |
| 77 | EGPRS_MAX_PS_NUM_INVALID, |
| 78 | }; |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 79 | |
| 80 | static inline uint16_t mod_sns_half() |
| 81 | { |
| 82 | return (RLC_MAX_SNS / 2) - 1; |
| 83 | } |
| 84 | |
Jacob Erlbeck | f2ba4cb | 2016-01-07 18:59:28 +0100 | [diff] [blame] | 85 | struct gprs_rlc_data_block_info { |
Jacob Erlbeck | 4abc686 | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 86 | unsigned int data_len; /* EGPRS: N2, GPRS: N2-2, N-2 */ |
| 87 | unsigned int bsn; |
| 88 | unsigned int ti; |
| 89 | unsigned int e; |
Jacob Erlbeck | cc34a5b | 2016-01-11 12:53:08 +0100 | [diff] [blame] | 90 | unsigned int cv; /* FBI == 1 <=> CV == 0 */ |
Jacob Erlbeck | 4abc686 | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 91 | unsigned int pi; |
| 92 | unsigned int spb; |
| 93 | }; |
| 94 | |
Jacob Erlbeck | f2ba4cb | 2016-01-07 18:59:28 +0100 | [diff] [blame] | 95 | struct gprs_rlc_data_info { |
Jacob Erlbeck | 4abc686 | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 96 | GprsCodingScheme cs; |
| 97 | unsigned int r; |
| 98 | unsigned int si; |
| 99 | unsigned int tfi; |
| 100 | unsigned int cps; |
| 101 | unsigned int rsb; |
Jacob Erlbeck | cc34a5b | 2016-01-11 12:53:08 +0100 | [diff] [blame] | 102 | unsigned int usf; |
| 103 | unsigned int es_p; |
| 104 | unsigned int rrbp; |
| 105 | unsigned int pr; |
Jacob Erlbeck | 4abc686 | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 106 | unsigned int num_data_blocks; |
Jacob Erlbeck | b55f313 | 2016-02-03 18:28:04 +0100 | [diff] [blame] | 107 | unsigned int with_padding; |
Jacob Erlbeck | 4abc686 | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 108 | unsigned int data_offs_bits[2]; |
Jacob Erlbeck | f2ba4cb | 2016-01-07 18:59:28 +0100 | [diff] [blame] | 109 | struct gprs_rlc_data_block_info block_info[2]; |
Jacob Erlbeck | 4abc686 | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 110 | }; |
| 111 | |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 112 | struct gprs_rlc_data { |
| 113 | uint8_t *prepare(size_t block_data_length); |
Holger Hans Peter Freyther | 423dd22 | 2013-11-25 23:24:29 +0100 | [diff] [blame] | 114 | void put_data(const uint8_t *data, size_t len); |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 115 | |
Alexander Couzens | 68e2c63 | 2016-05-30 19:53:13 +0200 | [diff] [blame] | 116 | /* block data including LI headers */ |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 117 | uint8_t block[RLC_MAX_LEN]; |
Alexander Couzens | 68e2c63 | 2016-05-30 19:53:13 +0200 | [diff] [blame] | 118 | /* block data len including LI headers*/ |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 119 | uint8_t len; |
Jacob Erlbeck | 1751c62 | 2015-06-04 12:12:32 +0200 | [diff] [blame] | 120 | |
Jacob Erlbeck | f2ba4cb | 2016-01-07 18:59:28 +0100 | [diff] [blame] | 121 | struct gprs_rlc_data_block_info block_info; |
Aravind Sirsikar | 9149552 | 2016-07-12 14:17:12 +0530 | [diff] [blame^] | 122 | /* |
| 123 | * cs_current_trans is variable to hold the cs_last value for |
| 124 | * current transmission. cs_current_trans is same as cs_last during |
| 125 | * transmission case. during retransmission cs_current_trans is |
| 126 | * fetched from egprs_mcs_retx_tbl table based on |
| 127 | * cs and demanded cs.reference is 44.060 Table |
| 128 | * 8.1.1.1 and Table 8.1.1.2 |
| 129 | * For UL. cs_last shall be used everywhere. |
| 130 | */ |
| 131 | GprsCodingScheme cs_current_trans; |
| 132 | GprsCodingScheme cs_last; |
Aravind Sirsikar | 7a05b03 | 2016-03-23 18:29:45 +0530 | [diff] [blame] | 133 | |
| 134 | /* puncturing scheme value to be used for next transmission*/ |
| 135 | enum egprs_puncturing_values next_ps; |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 136 | }; |
| 137 | |
Jacob Erlbeck | 6e9f9c2 | 2016-01-11 11:15:45 +0100 | [diff] [blame] | 138 | void gprs_rlc_data_info_init_dl(struct gprs_rlc_data_info *rlc, |
Jacob Erlbeck | b55f313 | 2016-02-03 18:28:04 +0100 | [diff] [blame] | 139 | GprsCodingScheme cs, bool with_padding); |
Jacob Erlbeck | 6e9f9c2 | 2016-01-11 11:15:45 +0100 | [diff] [blame] | 140 | void gprs_rlc_data_info_init_ul(struct gprs_rlc_data_info *rlc, |
Jacob Erlbeck | b55f313 | 2016-02-03 18:28:04 +0100 | [diff] [blame] | 141 | GprsCodingScheme cs, bool with_padding); |
Jacob Erlbeck | 6e9f9c2 | 2016-01-11 11:15:45 +0100 | [diff] [blame] | 142 | void gprs_rlc_data_block_info_init(struct gprs_rlc_data_block_info *rdbi, |
Jacob Erlbeck | b55f313 | 2016-02-03 18:28:04 +0100 | [diff] [blame] | 143 | GprsCodingScheme cs, bool with_padding); |
Aravind Sirsikar | a859a21 | 2016-03-23 18:29:46 +0530 | [diff] [blame] | 144 | unsigned int gprs_rlc_mcs_cps(GprsCodingScheme cs, enum egprs_puncturing_values |
| 145 | punct, enum egprs_puncturing_values punct2, int with_padding); |
Jacob Erlbeck | fbd82e4 | 2016-02-03 18:31:19 +0100 | [diff] [blame] | 146 | void gprs_rlc_mcs_cps_decode(unsigned int cps, GprsCodingScheme cs, |
| 147 | int *punct, int *punct2, int *with_padding); |
Aravind Sirsikar | 7952282 | 2016-03-23 18:29:47 +0530 | [diff] [blame] | 148 | enum egprs_puncturing_values gprs_get_punct_scheme(enum egprs_puncturing_values |
| 149 | punct, const GprsCodingScheme &cs, |
| 150 | const GprsCodingScheme &cs_current_trans); |
| 151 | void gprs_update_punct_scheme(enum egprs_puncturing_values *punct, |
| 152 | const GprsCodingScheme &cs); |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 153 | /* |
| 154 | * I hold the currently transferred blocks and will provide |
| 155 | * the routines to manipulate these arrays. |
| 156 | */ |
| 157 | struct gprs_rlc { |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 158 | gprs_rlc_data *block(int bsn); |
| 159 | gprs_rlc_data m_blocks[RLC_MAX_SNS/2]; |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 160 | }; |
| 161 | |
Daniel Willmann | 146514e | 2013-12-28 18:24:42 +0100 | [diff] [blame] | 162 | /** |
| 163 | * TODO: for GPRS/EDGE maybe make sns a template parameter |
| 164 | * so we create specialized versions... |
| 165 | */ |
| 166 | struct gprs_rlc_v_b { |
| 167 | /* Check for an individual frame */ |
| 168 | bool is_unacked(int bsn) const; |
| 169 | bool is_nacked(int bsn) const; |
| 170 | bool is_acked(int bsn) const; |
| 171 | bool is_resend(int bsn) const; |
| 172 | bool is_invalid(int bsn) const; |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 173 | gprs_rlc_dl_bsn_state get_state(int bsn) const; |
Daniel Willmann | 146514e | 2013-12-28 18:24:42 +0100 | [diff] [blame] | 174 | |
| 175 | /* Mark a RLC frame for something */ |
| 176 | void mark_unacked(int bsn); |
| 177 | void mark_nacked(int bsn); |
| 178 | void mark_acked(int bsn); |
| 179 | void mark_resend(int bsn); |
| 180 | void mark_invalid(int bsn); |
| 181 | |
| 182 | void reset(); |
| 183 | |
| 184 | |
| 185 | private: |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 186 | bool is_state(int bsn, const gprs_rlc_dl_bsn_state state) const; |
| 187 | void mark(int bsn, const gprs_rlc_dl_bsn_state state); |
Daniel Willmann | 146514e | 2013-12-28 18:24:42 +0100 | [diff] [blame] | 188 | |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 189 | gprs_rlc_dl_bsn_state m_v_b[RLC_MAX_SNS/2]; /* acknowledge state array */ |
Daniel Willmann | 146514e | 2013-12-28 18:24:42 +0100 | [diff] [blame] | 190 | }; |
| 191 | |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 192 | |
| 193 | /** |
Jacob Erlbeck | ed2dbf6 | 2015-12-28 19:15:40 +0100 | [diff] [blame] | 194 | * TODO: The UL/DL code could/should share a base class. |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 195 | */ |
Jacob Erlbeck | db88380 | 2016-01-19 14:07:33 +0100 | [diff] [blame] | 196 | class gprs_rlc_window { |
| 197 | public: |
| 198 | gprs_rlc_window(); |
| 199 | |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 200 | const uint16_t mod_sns() const; |
Jacob Erlbeck | 93c55d0 | 2015-12-23 16:29:07 +0100 | [diff] [blame] | 201 | const uint16_t mod_sns(uint16_t bsn) const; |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 202 | const uint16_t sns() const; |
| 203 | const uint16_t ws() const; |
| 204 | |
Jacob Erlbeck | db88380 | 2016-01-19 14:07:33 +0100 | [diff] [blame] | 205 | void set_sns(uint16_t sns); |
| 206 | void set_ws(uint16_t ws); |
| 207 | |
| 208 | protected: |
| 209 | uint16_t m_sns; |
| 210 | uint16_t m_ws; |
| 211 | }; |
| 212 | |
| 213 | struct gprs_rlc_dl_window: public gprs_rlc_window { |
| 214 | void reset(); |
| 215 | |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 216 | bool window_stalled() const; |
| 217 | bool window_empty() const; |
| 218 | |
| 219 | void increment_send(); |
| 220 | void raise(int moves); |
| 221 | |
| 222 | const uint16_t v_s() const; |
| 223 | const uint16_t v_s_mod(int offset) const; |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 224 | const uint16_t v_a() const; |
| 225 | const int16_t distance() const; |
| 226 | |
Daniel Willmann | 146514e | 2013-12-28 18:24:42 +0100 | [diff] [blame] | 227 | /* Methods to manage reception */ |
| 228 | int resend_needed(); |
| 229 | int mark_for_resend(); |
Jacob Erlbeck | e1ca87f | 2015-12-23 16:40:56 +0100 | [diff] [blame] | 230 | void update(BTS *bts, char *show_rbb, uint16_t ssn, |
Daniel Willmann | 146514e | 2013-12-28 18:24:42 +0100 | [diff] [blame] | 231 | uint16_t *lost, uint16_t *received); |
Jacob Erlbeck | eb08f86 | 2016-02-05 17:07:12 +0100 | [diff] [blame] | 232 | void update(BTS *bts, const struct bitvec *rbb, |
| 233 | uint16_t first_bsn, uint16_t *lost, |
| 234 | uint16_t *received); |
Daniel Willmann | 146514e | 2013-12-28 18:24:42 +0100 | [diff] [blame] | 235 | int move_window(); |
Daniel Willmann | 3ce011f | 2014-01-15 12:45:56 +0100 | [diff] [blame] | 236 | void show_state(char *show_rbb); |
Daniel Willmann | 146514e | 2013-12-28 18:24:42 +0100 | [diff] [blame] | 237 | int count_unacked(); |
| 238 | |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 239 | uint16_t m_v_s; /* send state */ |
| 240 | uint16_t m_v_a; /* ack state */ |
Daniel Willmann | 146514e | 2013-12-28 18:24:42 +0100 | [diff] [blame] | 241 | |
| 242 | gprs_rlc_v_b m_v_b; |
Jacob Erlbeck | a3a567e | 2015-12-28 13:46:32 +0100 | [diff] [blame] | 243 | |
| 244 | gprs_rlc_dl_window(); |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 245 | }; |
| 246 | |
Daniel Willmann | 7c3751b | 2013-12-28 13:59:24 +0100 | [diff] [blame] | 247 | struct gprs_rlc_v_n { |
| 248 | void reset(); |
| 249 | |
| 250 | void mark_received(int bsn); |
| 251 | void mark_missing(int bsn); |
| 252 | |
| 253 | bool is_received(int bsn) const; |
| 254 | |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 255 | gprs_rlc_ul_bsn_state state(int bsn) const; |
Daniel Willmann | 7c3751b | 2013-12-28 13:59:24 +0100 | [diff] [blame] | 256 | private: |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 257 | bool is_state(int bsn, const gprs_rlc_ul_bsn_state state) const; |
| 258 | void mark(int bsn, const gprs_rlc_ul_bsn_state state); |
| 259 | gprs_rlc_ul_bsn_state m_v_n[RLC_MAX_SNS/2]; /* receive state array */ |
Daniel Willmann | 7c3751b | 2013-12-28 13:59:24 +0100 | [diff] [blame] | 260 | }; |
| 261 | |
Jacob Erlbeck | db88380 | 2016-01-19 14:07:33 +0100 | [diff] [blame] | 262 | struct gprs_rlc_ul_window: public gprs_rlc_window { |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 263 | const uint16_t v_r() const; |
| 264 | const uint16_t v_q() const; |
| 265 | |
Daniel Willmann | 8a31f9e | 2013-11-27 17:08:35 +0100 | [diff] [blame] | 266 | const uint16_t ssn() const; |
| 267 | |
Jacob Erlbeck | e1ca87f | 2015-12-23 16:40:56 +0100 | [diff] [blame] | 268 | bool is_in_window(uint16_t bsn) const; |
| 269 | bool is_received(uint16_t bsn) const; |
Holger Hans Peter Freyther | 6ab5b24 | 2013-11-24 22:43:03 +0100 | [diff] [blame] | 270 | |
Daniel Willmann | 7c3751b | 2013-12-28 13:59:24 +0100 | [diff] [blame] | 271 | void update_rbb(char *rbb); |
Daniel Willmann | f4a1ec6 | 2013-12-28 13:57:31 +0100 | [diff] [blame] | 272 | void raise_v_r_to(int moves); |
Daniel Willmann | 7c3751b | 2013-12-28 13:59:24 +0100 | [diff] [blame] | 273 | void raise_v_r(const uint16_t bsn); |
| 274 | uint16_t raise_v_q(); |
Holger Hans Peter Freyther | cbb00eb | 2013-11-25 23:26:06 +0100 | [diff] [blame] | 275 | |
Holger Hans Peter Freyther | 7f3e662 | 2013-11-25 23:51:19 +0100 | [diff] [blame] | 276 | void raise_v_q(int); |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 277 | |
Jacob Erlbeck | d87e1d6 | 2015-12-14 11:43:04 +0100 | [diff] [blame] | 278 | void receive_bsn(const uint16_t bsn); |
Jacob Erlbeck | 784a0bd | 2015-12-14 11:54:29 +0100 | [diff] [blame] | 279 | bool invalidate_bsn(const uint16_t bsn); |
Daniel Willmann | 5584479 | 2013-12-28 14:41:00 +0100 | [diff] [blame] | 280 | |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 281 | uint16_t m_v_r; /* receive state */ |
| 282 | uint16_t m_v_q; /* receive window state */ |
Daniel Willmann | 7c3751b | 2013-12-28 13:59:24 +0100 | [diff] [blame] | 283 | |
| 284 | gprs_rlc_v_n m_v_n; |
Jacob Erlbeck | a3a567e | 2015-12-28 13:46:32 +0100 | [diff] [blame] | 285 | |
| 286 | gprs_rlc_ul_window(); |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 287 | }; |
| 288 | |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 289 | extern "C" { |
| 290 | /* TS 04.60 10.2.2 */ |
Jacob Erlbeck | 4aa78a8 | 2015-12-14 11:13:30 +0100 | [diff] [blame] | 291 | #if OSMO_IS_LITTLE_ENDIAN |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 292 | struct rlc_ul_header { |
| 293 | uint8_t r:1, |
| 294 | si:1, |
| 295 | cv:4, |
| 296 | pt:2; |
| 297 | uint8_t ti:1, |
| 298 | tfi:5, |
| 299 | pi:1, |
| 300 | spare:1; |
| 301 | uint8_t e:1, |
| 302 | bsn:7; |
| 303 | } __attribute__ ((packed)); |
| 304 | |
| 305 | struct rlc_dl_header { |
| 306 | uint8_t usf:3, |
| 307 | s_p:1, |
| 308 | rrbp:2, |
| 309 | pt:2; |
| 310 | uint8_t fbi:1, |
| 311 | tfi:5, |
| 312 | pr:2; |
| 313 | uint8_t e:1, |
| 314 | bsn:7; |
| 315 | } __attribute__ ((packed)); |
| 316 | |
| 317 | struct rlc_li_field { |
| 318 | uint8_t e:1, |
| 319 | m:1, |
| 320 | li:6; |
| 321 | } __attribute__ ((packed)); |
Jacob Erlbeck | 4abc686 | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 322 | |
| 323 | struct rlc_li_field_egprs { |
| 324 | uint8_t e:1, |
| 325 | li:7; |
| 326 | } __attribute__ ((packed)); |
| 327 | |
Aravind Sirsikar | 5a5d2b7 | 2016-03-16 19:19:17 +0530 | [diff] [blame] | 328 | /* TS 44.060 10.3a.4.1.1 */ |
| 329 | struct gprs_rlc_ul_header_egprs_1 { |
| 330 | uint8_t r:1, |
| 331 | si:1, |
| 332 | cv:4, |
| 333 | tfi_a:2; |
| 334 | uint8_t tfi_b:3, |
| 335 | bsn1_a:5; |
| 336 | uint8_t bsn1_b:6, |
| 337 | bsn2_a:2; |
| 338 | uint8_t bsn2_b; |
| 339 | uint8_t cps:5, |
| 340 | rsb:1, |
| 341 | pi:1, |
| 342 | spare_a:1; |
| 343 | uint8_t spare_b:6, |
| 344 | dummy:2; |
| 345 | } __attribute__ ((packed)); |
| 346 | |
| 347 | /* TS 44.060 10.3a.4.2.1 */ |
| 348 | struct gprs_rlc_ul_header_egprs_2 { |
| 349 | uint8_t r:1, |
| 350 | si:1, |
| 351 | cv:4, |
| 352 | tfi_a:2; |
| 353 | uint8_t tfi_b:3, |
| 354 | bsn1_a:5; |
| 355 | uint8_t bsn1_b:6, |
| 356 | cps_a:2; |
| 357 | uint8_t cps_b:1, |
| 358 | rsb:1, |
| 359 | pi:1, |
| 360 | spare_a:5; |
| 361 | uint8_t spare_b:5, |
| 362 | dummy:3; |
| 363 | } __attribute__ ((packed)); |
| 364 | |
| 365 | /* TS 44.060 10.3a.4.3.1 */ |
Jacob Erlbeck | 4abc686 | 2015-12-08 15:14:05 +0100 | [diff] [blame] | 366 | struct gprs_rlc_ul_header_egprs_3 { |
| 367 | uint8_t r:1, |
| 368 | si:1, |
| 369 | cv:4, |
| 370 | tfi_a:2; |
| 371 | uint8_t tfi_b:3, |
| 372 | bsn1_a:5; |
| 373 | uint8_t bsn1_b:6, |
| 374 | cps_a:2; |
| 375 | uint8_t cps_b:2, |
| 376 | spb:2, |
| 377 | rsb:1, |
| 378 | pi:1, |
| 379 | spare:1, |
| 380 | dummy:1; |
| 381 | } __attribute__ ((packed)); |
Jacob Erlbeck | f0e4039 | 2016-01-08 10:07:53 +0100 | [diff] [blame] | 382 | |
Jacob Erlbeck | 9e85939 | 2016-02-02 11:48:37 +0100 | [diff] [blame] | 383 | struct gprs_rlc_dl_header_egprs_1 { |
| 384 | uint8_t usf:3, |
| 385 | es_p:2, |
| 386 | rrbp:2, |
| 387 | tfi_a:1; |
| 388 | uint8_t tfi_b:4, |
| 389 | pr:2, |
| 390 | bsn1_a:2; |
| 391 | uint8_t bsn1_b:8; |
| 392 | uint8_t bsn1_c:1, |
| 393 | bsn2_a:7; |
| 394 | uint8_t bsn2_b:3, |
| 395 | cps:5; |
| 396 | } __attribute__ ((packed)); |
| 397 | |
| 398 | struct gprs_rlc_dl_header_egprs_2 { |
| 399 | uint8_t usf:3, |
| 400 | es_p:2, |
| 401 | rrbp:2, |
| 402 | tfi_a:1; |
| 403 | uint8_t tfi_b:4, |
| 404 | pr:2, |
| 405 | bsn1_a:2; |
| 406 | uint8_t bsn1_b:8; |
| 407 | uint8_t bsn1_c:1, |
| 408 | cps:3, |
| 409 | dummy:4; |
| 410 | } __attribute__ ((packed)); |
| 411 | |
Jacob Erlbeck | f0e4039 | 2016-01-08 10:07:53 +0100 | [diff] [blame] | 412 | struct gprs_rlc_dl_header_egprs_3 { |
| 413 | uint8_t usf:3, |
| 414 | es_p:2, |
| 415 | rrbp:2, |
| 416 | tfi_a:1; |
| 417 | uint8_t tfi_b:4, |
| 418 | pr:2, |
| 419 | bsn1_a:2; |
| 420 | uint8_t bsn1_b:8; |
| 421 | uint8_t bsn1_c:1, |
| 422 | cps:4, |
| 423 | spb:2, |
| 424 | dummy:1; |
| 425 | } __attribute__ ((packed)); |
Jacob Erlbeck | 4aa78a8 | 2015-12-14 11:13:30 +0100 | [diff] [blame] | 426 | #else |
| 427 | # error "Only little endian headers are supported yet. TODO: add missing structs" |
| 428 | #endif |
Holger Hans Peter Freyther | d11290b | 2013-10-26 17:32:04 +0200 | [diff] [blame] | 429 | } |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 430 | |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 431 | inline bool gprs_rlc_v_b::is_state(int bsn, const gprs_rlc_dl_bsn_state type) const |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 432 | { |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 433 | return m_v_b[bsn & mod_sns_half()] == type; |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 434 | } |
| 435 | |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 436 | inline void gprs_rlc_v_b::mark(int bsn, const gprs_rlc_dl_bsn_state type) |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 437 | { |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 438 | m_v_b[bsn & mod_sns_half()] = type; |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 439 | } |
| 440 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 441 | inline bool gprs_rlc_v_b::is_nacked(int bsn) const |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 442 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 443 | return is_state(bsn, GPRS_RLC_DL_BSN_NACKED); |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 444 | } |
| 445 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 446 | inline bool gprs_rlc_v_b::is_acked(int bsn) const |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 447 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 448 | return is_state(bsn, GPRS_RLC_DL_BSN_ACKED); |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 449 | } |
| 450 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 451 | inline bool gprs_rlc_v_b::is_unacked(int bsn) const |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 452 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 453 | return is_state(bsn, GPRS_RLC_DL_BSN_UNACKED); |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 454 | } |
| 455 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 456 | inline bool gprs_rlc_v_b::is_resend(int bsn) const |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 457 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 458 | return is_state(bsn, GPRS_RLC_DL_BSN_RESEND); |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 459 | } |
| 460 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 461 | inline bool gprs_rlc_v_b::is_invalid(int bsn) const |
Holger Hans Peter Freyther | 9525567 | 2013-11-23 16:18:18 +0100 | [diff] [blame] | 462 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 463 | return is_state(bsn, GPRS_RLC_DL_BSN_INVALID); |
Holger Hans Peter Freyther | 9525567 | 2013-11-23 16:18:18 +0100 | [diff] [blame] | 464 | } |
| 465 | |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 466 | inline gprs_rlc_dl_bsn_state gprs_rlc_v_b::get_state(int bsn) const |
Daniel Willmann | 146514e | 2013-12-28 18:24:42 +0100 | [diff] [blame] | 467 | { |
| 468 | return m_v_b[bsn & mod_sns_half()]; |
| 469 | } |
| 470 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 471 | inline void gprs_rlc_v_b::mark_resend(int bsn) |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 472 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 473 | return mark(bsn, GPRS_RLC_DL_BSN_RESEND); |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 474 | } |
| 475 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 476 | inline void gprs_rlc_v_b::mark_unacked(int bsn) |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 477 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 478 | return mark(bsn, GPRS_RLC_DL_BSN_UNACKED); |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 479 | } |
| 480 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 481 | inline void gprs_rlc_v_b::mark_acked(int bsn) |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 482 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 483 | return mark(bsn, GPRS_RLC_DL_BSN_ACKED); |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 484 | } |
| 485 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 486 | inline void gprs_rlc_v_b::mark_nacked(int bsn) |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 487 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 488 | return mark(bsn, GPRS_RLC_DL_BSN_NACKED); |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 489 | } |
| 490 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 491 | inline void gprs_rlc_v_b::mark_invalid(int bsn) |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 492 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 493 | return mark(bsn, GPRS_RLC_DL_BSN_INVALID); |
Holger Hans Peter Freyther | 6b5660c | 2013-11-23 16:10:48 +0100 | [diff] [blame] | 494 | } |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 495 | |
Jacob Erlbeck | db88380 | 2016-01-19 14:07:33 +0100 | [diff] [blame] | 496 | inline gprs_rlc_window::gprs_rlc_window() |
| 497 | : m_sns(RLC_GPRS_SNS) |
Jacob Erlbeck | 8f8197f | 2015-12-28 13:51:44 +0100 | [diff] [blame] | 498 | , m_ws(RLC_GPRS_WS) |
Jacob Erlbeck | a3a567e | 2015-12-28 13:46:32 +0100 | [diff] [blame] | 499 | { |
| 500 | } |
| 501 | |
Jacob Erlbeck | db88380 | 2016-01-19 14:07:33 +0100 | [diff] [blame] | 502 | inline const uint16_t gprs_rlc_window::sns() const |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 503 | { |
Jacob Erlbeck | 8f8197f | 2015-12-28 13:51:44 +0100 | [diff] [blame] | 504 | return m_sns; |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 505 | } |
| 506 | |
Jacob Erlbeck | db88380 | 2016-01-19 14:07:33 +0100 | [diff] [blame] | 507 | inline const uint16_t gprs_rlc_window::ws() const |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 508 | { |
Jacob Erlbeck | 8f8197f | 2015-12-28 13:51:44 +0100 | [diff] [blame] | 509 | return m_ws; |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 510 | } |
| 511 | |
Jacob Erlbeck | db88380 | 2016-01-19 14:07:33 +0100 | [diff] [blame] | 512 | inline const uint16_t gprs_rlc_window::mod_sns() const |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 513 | { |
| 514 | return sns() - 1; |
| 515 | } |
| 516 | |
Jacob Erlbeck | db88380 | 2016-01-19 14:07:33 +0100 | [diff] [blame] | 517 | inline const uint16_t gprs_rlc_window::mod_sns(uint16_t bsn) const |
Jacob Erlbeck | 93c55d0 | 2015-12-23 16:29:07 +0100 | [diff] [blame] | 518 | { |
| 519 | return bsn & mod_sns(); |
| 520 | } |
| 521 | |
Jacob Erlbeck | db88380 | 2016-01-19 14:07:33 +0100 | [diff] [blame] | 522 | inline gprs_rlc_dl_window::gprs_rlc_dl_window() |
| 523 | : m_v_s(0) |
| 524 | , m_v_a(0) |
| 525 | { |
| 526 | } |
| 527 | |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 528 | inline const uint16_t gprs_rlc_dl_window::v_s() const |
| 529 | { |
| 530 | return m_v_s; |
| 531 | } |
| 532 | |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 533 | inline const uint16_t gprs_rlc_dl_window::v_s_mod(int offset) const |
| 534 | { |
Jacob Erlbeck | 93c55d0 | 2015-12-23 16:29:07 +0100 | [diff] [blame] | 535 | return mod_sns(m_v_s + offset); |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 536 | } |
| 537 | |
| 538 | inline const uint16_t gprs_rlc_dl_window::v_a() const |
| 539 | { |
| 540 | return m_v_a; |
| 541 | } |
| 542 | |
| 543 | inline bool gprs_rlc_dl_window::window_stalled() const |
| 544 | { |
Jacob Erlbeck | 93c55d0 | 2015-12-23 16:29:07 +0100 | [diff] [blame] | 545 | return (mod_sns(m_v_s - m_v_a)) == ws(); |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | inline bool gprs_rlc_dl_window::window_empty() const |
| 549 | { |
| 550 | return m_v_s == m_v_a; |
| 551 | } |
| 552 | |
| 553 | inline void gprs_rlc_dl_window::increment_send() |
| 554 | { |
| 555 | m_v_s = (m_v_s + 1) & mod_sns(); |
| 556 | } |
| 557 | |
| 558 | inline void gprs_rlc_dl_window::raise(int moves) |
| 559 | { |
| 560 | m_v_a = (m_v_a + moves) & mod_sns(); |
| 561 | } |
| 562 | |
| 563 | inline const int16_t gprs_rlc_dl_window::distance() const |
| 564 | { |
| 565 | return (m_v_s - m_v_a) & mod_sns(); |
| 566 | } |
| 567 | |
Jacob Erlbeck | a3a567e | 2015-12-28 13:46:32 +0100 | [diff] [blame] | 568 | inline gprs_rlc_ul_window::gprs_rlc_ul_window() |
| 569 | : m_v_r(0) |
| 570 | , m_v_q(0) |
| 571 | { |
| 572 | } |
| 573 | |
Jacob Erlbeck | e1ca87f | 2015-12-23 16:40:56 +0100 | [diff] [blame] | 574 | inline bool gprs_rlc_ul_window::is_in_window(uint16_t bsn) const |
Holger Hans Peter Freyther | 6ab5b24 | 2013-11-24 22:43:03 +0100 | [diff] [blame] | 575 | { |
| 576 | uint16_t offset_v_q; |
| 577 | |
| 578 | /* current block relative to lowest unreceived block */ |
| 579 | offset_v_q = (bsn - m_v_q) & mod_sns(); |
| 580 | /* If out of window (may happen if blocks below V(Q) are received |
| 581 | * again. */ |
| 582 | return offset_v_q < ws(); |
| 583 | } |
| 584 | |
Jacob Erlbeck | e1ca87f | 2015-12-23 16:40:56 +0100 | [diff] [blame] | 585 | inline bool gprs_rlc_ul_window::is_received(uint16_t bsn) const |
Jacob Erlbeck | 784a0bd | 2015-12-14 11:54:29 +0100 | [diff] [blame] | 586 | { |
| 587 | uint16_t offset_v_r; |
| 588 | |
| 589 | /* Offset to the end of the received window */ |
| 590 | offset_v_r = (m_v_r - 1 - bsn) & mod_sns(); |
| 591 | return is_in_window(bsn) && m_v_n.is_received(bsn) && offset_v_r < ws(); |
| 592 | } |
| 593 | |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 594 | inline const uint16_t gprs_rlc_ul_window::v_r() const |
| 595 | { |
| 596 | return m_v_r; |
| 597 | } |
| 598 | |
| 599 | inline const uint16_t gprs_rlc_ul_window::v_q() const |
| 600 | { |
| 601 | return m_v_q; |
| 602 | } |
| 603 | |
Daniel Willmann | 8a31f9e | 2013-11-27 17:08:35 +0100 | [diff] [blame] | 604 | inline const uint16_t gprs_rlc_ul_window::ssn() const |
| 605 | { |
| 606 | return m_v_r; |
| 607 | } |
| 608 | |
Daniel Willmann | f4a1ec6 | 2013-12-28 13:57:31 +0100 | [diff] [blame] | 609 | inline void gprs_rlc_ul_window::raise_v_r_to(int moves) |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 610 | { |
Jacob Erlbeck | 93c55d0 | 2015-12-23 16:29:07 +0100 | [diff] [blame] | 611 | m_v_r = mod_sns(m_v_r + moves); |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 612 | } |
| 613 | |
Holger Hans Peter Freyther | 7f3e662 | 2013-11-25 23:51:19 +0100 | [diff] [blame] | 614 | inline void gprs_rlc_ul_window::raise_v_q(int incr) |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 615 | { |
Jacob Erlbeck | 93c55d0 | 2015-12-23 16:29:07 +0100 | [diff] [blame] | 616 | m_v_q = mod_sns(m_v_q + incr); |
Holger Hans Peter Freyther | f1593b7 | 2013-11-24 20:36:36 +0100 | [diff] [blame] | 617 | } |
Holger Hans Peter Freyther | 270f7fc | 2013-11-24 20:55:02 +0100 | [diff] [blame] | 618 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 619 | inline void gprs_rlc_v_n::mark_received(int bsn) |
Holger Hans Peter Freyther | 270f7fc | 2013-11-24 20:55:02 +0100 | [diff] [blame] | 620 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 621 | return mark(bsn, GPRS_RLC_UL_BSN_RECEIVED); |
Holger Hans Peter Freyther | 270f7fc | 2013-11-24 20:55:02 +0100 | [diff] [blame] | 622 | } |
| 623 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 624 | inline void gprs_rlc_v_n::mark_missing(int bsn) |
Holger Hans Peter Freyther | 270f7fc | 2013-11-24 20:55:02 +0100 | [diff] [blame] | 625 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 626 | return mark(bsn, GPRS_RLC_UL_BSN_MISSING); |
Holger Hans Peter Freyther | 270f7fc | 2013-11-24 20:55:02 +0100 | [diff] [blame] | 627 | } |
| 628 | |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 629 | inline bool gprs_rlc_v_n::is_received(int bsn) const |
Holger Hans Peter Freyther | 270f7fc | 2013-11-24 20:55:02 +0100 | [diff] [blame] | 630 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 631 | return is_state(bsn, GPRS_RLC_UL_BSN_RECEIVED); |
Holger Hans Peter Freyther | 270f7fc | 2013-11-24 20:55:02 +0100 | [diff] [blame] | 632 | } |
| 633 | |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 634 | inline bool gprs_rlc_v_n::is_state(int bsn, gprs_rlc_ul_bsn_state type) const |
Holger Hans Peter Freyther | 270f7fc | 2013-11-24 20:55:02 +0100 | [diff] [blame] | 635 | { |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 636 | return m_v_n[bsn & mod_sns_half()] == type; |
| 637 | } |
| 638 | |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 639 | inline void gprs_rlc_v_n::mark(int bsn, gprs_rlc_ul_bsn_state type) |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 640 | { |
| 641 | m_v_n[bsn & mod_sns_half()] = type; |
| 642 | } |
| 643 | |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 644 | inline gprs_rlc_ul_bsn_state gprs_rlc_v_n::state(int bsn) const |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 645 | { |
Daniel Willmann | d54d9f5 | 2013-12-28 21:16:13 +0100 | [diff] [blame] | 646 | return m_v_n[bsn & mod_sns_half()]; |
Holger Hans Peter Freyther | 270f7fc | 2013-11-24 20:55:02 +0100 | [diff] [blame] | 647 | } |
Holger Hans Peter Freyther | 3cbf9e0 | 2013-11-26 21:43:58 +0100 | [diff] [blame] | 648 | |
| 649 | inline gprs_rlc_data *gprs_rlc::block(int bsn) |
| 650 | { |
| 651 | return &m_blocks[bsn & mod_sns_half()]; |
| 652 | } |