Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 1 | /* tbf_fsm.c |
| 2 | * |
| 3 | * Copyright (C) 2021 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de> |
| 4 | * Author: Pau Espin Pedrol <pespin@sysmocom.de> |
| 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 <unistd.h> |
| 22 | |
| 23 | #include <talloc.h> |
| 24 | |
| 25 | #include <tbf_fsm.h> |
| 26 | #include <gprs_rlcmac.h> |
| 27 | #include <gprs_debug.h> |
| 28 | #include <gprs_ms.h> |
| 29 | #include <encoding.h> |
| 30 | #include <bts.h> |
| 31 | |
| 32 | #define X(s) (1 << (s)) |
| 33 | |
| 34 | const struct osmo_tdef_state_timeout tbf_fsm_timeouts[32] = { |
| 35 | [TBF_ST_NULL] = {}, |
| 36 | [TBF_ST_ASSIGN] = { }, |
| 37 | [TBF_ST_FLOW] = { }, |
| 38 | [TBF_ST_FINISHED] = {}, |
| 39 | [TBF_ST_WAIT_RELEASE] = {}, |
| 40 | [TBF_ST_RELEASING] = {}, |
| 41 | }; |
| 42 | |
| 43 | const struct value_string tbf_fsm_event_names[] = { |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 44 | { TBF_EV_ASSIGN_ADD_CCCH, "ASSIGN_ADD_CCCH" }, |
| 45 | { TBF_EV_ASSIGN_ADD_PACCH, "ASSIGN_ADD_PACCH" }, |
| 46 | { TBF_EV_ASSIGN_DEL_CCCH, "ASSIGN_DEL_CCCH" }, |
Pau Espin Pedrol | 720e19e | 2021-07-22 19:56:37 +0200 | [diff] [blame] | 47 | { TBF_EV_ASSIGN_ACK_PACCH, "ASSIGN_ACK_PACCH" }, |
| 48 | { TBF_EV_ASSIGN_READY_CCCH, "ASSIGN_READY_CCCH" }, |
Pau Espin Pedrol | c32c4a3 | 2021-07-23 18:27:57 +0200 | [diff] [blame] | 49 | { TBF_EV_LAST_DL_DATA_SENT, "LAST_DL_DATA_SENT" }, |
| 50 | { TBF_EV_LAST_UL_DATA_RECVD, "LAST_UL_DATA_RECVD" }, |
Pau Espin Pedrol | efcb046 | 2021-07-26 12:33:39 +0200 | [diff] [blame] | 51 | { TBF_EV_FINAL_ACK_RECVD, "FINAL_ACK_RECVD" }, |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 52 | { TBF_EV_MAX_N3101 , "MAX_N3101" }, |
| 53 | { TBF_EV_MAX_N3103 , "MAX_N3103" }, |
| 54 | { TBF_EV_MAX_N3105 , "MAX_N3105" }, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 55 | { 0, NULL } |
| 56 | }; |
| 57 | |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 58 | static void mod_ass_type(struct tbf_fsm_ctx *ctx, uint8_t t, bool set) |
| 59 | { |
| 60 | const char *ch = "UNKNOWN"; |
| 61 | bool prev_set = ctx->state_flags & (1 << t); |
| 62 | |
| 63 | switch (t) { |
| 64 | case GPRS_RLCMAC_FLAG_CCCH: |
| 65 | ch = "CCCH"; |
| 66 | break; |
| 67 | case GPRS_RLCMAC_FLAG_PACCH: |
| 68 | ch = "PACCH"; |
| 69 | break; |
| 70 | default: |
| 71 | LOGPTBF(ctx->tbf, LOGL_ERROR, |
| 72 | "attempted to %sset unexpected ass. type %d - FIXME!\n", |
| 73 | set ? "" : "un", t); |
| 74 | return; |
| 75 | } |
| 76 | |
| 77 | if (set && prev_set) { |
| 78 | LOGPTBF(ctx->tbf, LOGL_ERROR, |
| 79 | "attempted to set ass. type %s which is already set.\n", ch); |
| 80 | } else if (!set && !prev_set) { |
| 81 | return; |
| 82 | } |
| 83 | |
| 84 | LOGPTBF(ctx->tbf, LOGL_INFO, "%sset ass. type %s [prev CCCH:%u, PACCH:%u]\n", |
| 85 | set ? "" : "un", ch, |
| 86 | !!(ctx->state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH)), |
| 87 | !!(ctx->state_flags & (1 << GPRS_RLCMAC_FLAG_PACCH))); |
| 88 | |
| 89 | if (set) { |
| 90 | ctx->state_flags |= (1 << t); |
| 91 | } else { |
| 92 | ctx->state_flags &= GPRS_RLCMAC_FLAG_TO_MASK; /* keep to flags */ |
| 93 | ctx->state_flags &= ~(1 << t); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | |
| 98 | static void st_null(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 99 | { |
| 100 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
| 101 | switch (event) { |
| 102 | case TBF_EV_ASSIGN_ADD_CCCH: |
| 103 | mod_ass_type(ctx, GPRS_RLCMAC_FLAG_CCCH, true); |
| 104 | tbf_fsm_state_chg(fi, tbf_direction(ctx->tbf) == GPRS_RLCMAC_DL_TBF ? |
| 105 | TBF_ST_ASSIGN : TBF_ST_FLOW); |
| 106 | break; |
| 107 | case TBF_EV_ASSIGN_ADD_PACCH: |
| 108 | mod_ass_type(ctx, GPRS_RLCMAC_FLAG_PACCH, true); |
| 109 | tbf_fsm_state_chg(fi, TBF_ST_ASSIGN); |
| 110 | break; |
| 111 | default: |
| 112 | OSMO_ASSERT(0); |
| 113 | } |
| 114 | } |
| 115 | |
Pau Espin Pedrol | 9d67e72 | 2021-07-28 19:25:38 +0200 | [diff] [blame] | 116 | static void st_assign_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_state) |
| 117 | { |
| 118 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
| 119 | unsigned long val; |
| 120 | unsigned int sec, micro; |
| 121 | |
| 122 | /* If assignment for this TBF is happening on PACCH, that means the |
| 123 | * actual Assignment procedure (tx/rx) is happening on another TBF (eg |
| 124 | * Ul TBF vs DL TBF). Hence we add a security timer here to free it in |
| 125 | * case the other TBF doesn't succeed in informing (assigning) the MS |
| 126 | * about this TBF, or simply because the scheduler takes too long to |
| 127 | * schedule it. This timer can probably be dropped once we make the |
| 128 | * other TBF always signal us assignment failure (we already get |
| 129 | * assignment success through TBF_EV_ASSIGN_ACK_PACCH) */ |
| 130 | if (ctx->state_flags & (1 << GPRS_RLCMAC_FLAG_PACCH)) { |
| 131 | fi->T = -2001; |
| 132 | val = osmo_tdef_get(the_pcu->T_defs, fi->T, OSMO_TDEF_MS, -1); |
| 133 | sec = val / 1000; |
| 134 | micro = (val % 1000) * 1000; |
| 135 | LOGPTBF(ctx->tbf, LOGL_DEBUG, |
| 136 | "Starting timer X2001 [assignment (PACCH)] with %u sec. %u microsec\n", |
| 137 | sec, micro); |
| 138 | osmo_timer_schedule(&fi->timer, sec, micro); |
| 139 | } |
| 140 | } |
| 141 | |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 142 | static void st_assign(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 143 | { |
| 144 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
| 145 | switch (event) { |
| 146 | case TBF_EV_ASSIGN_ADD_CCCH: |
| 147 | mod_ass_type(ctx, GPRS_RLCMAC_FLAG_CCCH, true); |
| 148 | break; |
| 149 | case TBF_EV_ASSIGN_ADD_PACCH: |
| 150 | mod_ass_type(ctx, GPRS_RLCMAC_FLAG_PACCH, true); |
| 151 | break; |
Pau Espin Pedrol | 720e19e | 2021-07-22 19:56:37 +0200 | [diff] [blame] | 152 | case TBF_EV_ASSIGN_ACK_PACCH: |
| 153 | if (ctx->state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH)) { |
| 154 | /* We now know that the PACCH really existed */ |
| 155 | LOGPTBF(ctx->tbf, LOGL_INFO, |
| 156 | "The TBF has been confirmed on the PACCH, " |
| 157 | "changed type from CCCH to PACCH\n"); |
| 158 | mod_ass_type(ctx, GPRS_RLCMAC_FLAG_CCCH, false); |
| 159 | mod_ass_type(ctx, GPRS_RLCMAC_FLAG_PACCH, true); |
| 160 | } |
| 161 | tbf_fsm_state_chg(fi, TBF_ST_FLOW); |
| 162 | break; |
| 163 | case TBF_EV_ASSIGN_READY_CCCH: |
| 164 | /* change state to FLOW, so scheduler will start transmission */ |
| 165 | tbf_fsm_state_chg(fi, TBF_ST_FLOW); |
| 166 | break; |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 167 | default: |
| 168 | OSMO_ASSERT(0); |
| 169 | } |
| 170 | } |
| 171 | |
Pau Espin Pedrol | c32c4a3 | 2021-07-23 18:27:57 +0200 | [diff] [blame] | 172 | static void st_flow(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 173 | { |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 174 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
Pau Espin Pedrol | c32c4a3 | 2021-07-23 18:27:57 +0200 | [diff] [blame] | 175 | switch (event) { |
| 176 | case TBF_EV_LAST_DL_DATA_SENT: |
| 177 | case TBF_EV_LAST_UL_DATA_RECVD: |
| 178 | /* All data has been sent or received, change state to FINISHED */ |
| 179 | tbf_fsm_state_chg(fi, TBF_ST_FINISHED); |
| 180 | break; |
Pau Espin Pedrol | efcb046 | 2021-07-26 12:33:39 +0200 | [diff] [blame] | 181 | case TBF_EV_FINAL_ACK_RECVD: |
| 182 | /* We received Final Ack (DL ACK/NACK) from MS. move to |
| 183 | WAIT_RELEASE, we wait there for release or re-use the TBF in |
| 184 | case we receive more DL data to tx */ |
| 185 | tbf_fsm_state_chg(fi, TBF_ST_WAIT_RELEASE); |
| 186 | break; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 187 | case TBF_EV_MAX_N3101: |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 188 | ctx->T_release = 3169; |
| 189 | tbf_fsm_state_chg(fi, TBF_ST_RELEASING); |
| 190 | break; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 191 | case TBF_EV_MAX_N3105: |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 192 | ctx->T_release = 3195; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 193 | tbf_fsm_state_chg(fi, TBF_ST_RELEASING); |
| 194 | break; |
Pau Espin Pedrol | efcb046 | 2021-07-26 12:33:39 +0200 | [diff] [blame] | 195 | default: |
| 196 | OSMO_ASSERT(0); |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | static void st_finished(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 201 | { |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 202 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
Pau Espin Pedrol | efcb046 | 2021-07-26 12:33:39 +0200 | [diff] [blame] | 203 | switch (event) { |
| 204 | case TBF_EV_FINAL_ACK_RECVD: |
| 205 | /* We received Final Ack (DL ACK/NACK) from MS. move to |
| 206 | WAIT_RELEASE, we wait there for release or re-use the TBF in |
| 207 | case we receive more DL data to tx */ |
| 208 | tbf_fsm_state_chg(fi, TBF_ST_WAIT_RELEASE); |
| 209 | break; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 210 | case TBF_EV_MAX_N3103: |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 211 | ctx->T_release = 3169; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 212 | tbf_fsm_state_chg(fi, TBF_ST_RELEASING); |
| 213 | break; |
| 214 | case TBF_EV_MAX_N3105: |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 215 | ctx->T_release = 3195; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 216 | tbf_fsm_state_chg(fi, TBF_ST_RELEASING); |
| 217 | break; |
| 218 | default: |
| 219 | OSMO_ASSERT(0); |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | static void st_wait_release(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 224 | { |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 225 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 226 | switch (event) { |
| 227 | case TBF_EV_FINAL_ACK_RECVD: |
| 228 | /* ignore, duplicate ACK, we already know about since we are in WAIT_RELEASE */ |
| 229 | break; |
| 230 | case TBF_EV_MAX_N3101: |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 231 | ctx->T_release = 3169; |
| 232 | tbf_fsm_state_chg(fi, TBF_ST_RELEASING); |
| 233 | break; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 234 | case TBF_EV_MAX_N3105: |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 235 | ctx->T_release = 3195; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 236 | tbf_fsm_state_chg(fi, TBF_ST_RELEASING); |
| 237 | break; |
Pau Espin Pedrol | c32c4a3 | 2021-07-23 18:27:57 +0200 | [diff] [blame] | 238 | default: |
| 239 | OSMO_ASSERT(0); |
| 240 | } |
| 241 | } |
| 242 | |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 243 | static void st_releasing_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_state) |
| 244 | { |
| 245 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
| 246 | unsigned long val; |
| 247 | |
| 248 | if (!ctx->T_release) |
| 249 | return; |
| 250 | |
| 251 | /* In general we should end up here with an assigned timer in ctx->T_release. Possible values are: |
| 252 | * T3195: Wait for reuse of TFI(s) when there is no response from the MS |
| 253 | * (radio failure or cell change) for this TBF/MBMS radio bearer. |
| 254 | * T3169: Wait for reuse of USF and TFI(s) after the MS uplink assignment for this TBF is invalid. |
| 255 | */ |
| 256 | val = osmo_tdef_get(tbf_ms(ctx->tbf)->bts->T_defs_bts, ctx->T_release, OSMO_TDEF_S, -1); |
| 257 | fi->T = ctx->T_release; |
| 258 | LOGPTBF(ctx->tbf, LOGL_DEBUG, "starting timer T%u with %lu sec. %u microsec\n", |
| 259 | ctx->T_release, val, 0); |
| 260 | osmo_timer_schedule(&fi->timer, val, 0); |
| 261 | } |
| 262 | |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 263 | static void tbf_fsm_cleanup(struct osmo_fsm_inst *fi, enum osmo_fsm_term_cause cause) |
| 264 | { |
| 265 | /* TODO: needed ? |
| 266 | * struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
| 267 | */ |
| 268 | } |
| 269 | |
| 270 | static int tbf_fsm_timer_cb(struct osmo_fsm_inst *fi) |
| 271 | { |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 272 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 273 | switch (fi->T) { |
Pau Espin Pedrol | 9d67e72 | 2021-07-28 19:25:38 +0200 | [diff] [blame] | 274 | case -2001: |
| 275 | LOGPTBF(ctx->tbf, LOGL_NOTICE, "releasing due to PACCH assignment timeout.\n"); |
| 276 | /* fall-through */ |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 277 | case 3169: |
| 278 | case 3195: |
| 279 | tbf_free(ctx->tbf); |
| 280 | break; |
| 281 | default: |
| 282 | OSMO_ASSERT(0); |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 283 | } |
| 284 | return 0; |
| 285 | } |
| 286 | |
| 287 | static struct osmo_fsm_state tbf_fsm_states[] = { |
| 288 | [TBF_ST_NULL] = { |
| 289 | .in_event_mask = |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 290 | X(TBF_EV_ASSIGN_ADD_CCCH) | |
| 291 | X(TBF_EV_ASSIGN_ADD_PACCH), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 292 | .out_state_mask = |
| 293 | X(TBF_ST_ASSIGN) | |
| 294 | X(TBF_ST_FLOW) | |
| 295 | X(TBF_ST_RELEASING), |
| 296 | .name = "NULL", |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 297 | .action = st_null, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 298 | }, |
| 299 | [TBF_ST_ASSIGN] = { |
| 300 | .in_event_mask = |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 301 | X(TBF_EV_ASSIGN_ADD_CCCH) | |
Pau Espin Pedrol | 720e19e | 2021-07-22 19:56:37 +0200 | [diff] [blame] | 302 | X(TBF_EV_ASSIGN_ADD_PACCH) | |
| 303 | X(TBF_EV_ASSIGN_ACK_PACCH) | |
| 304 | X(TBF_EV_ASSIGN_READY_CCCH), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 305 | .out_state_mask = |
| 306 | X(TBF_ST_FLOW) | |
| 307 | X(TBF_ST_FINISHED) | |
| 308 | X(TBF_ST_RELEASING), |
| 309 | .name = "ASSIGN", |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 310 | .action = st_assign, |
Pau Espin Pedrol | 9d67e72 | 2021-07-28 19:25:38 +0200 | [diff] [blame] | 311 | .onenter = st_assign_on_enter, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 312 | }, |
| 313 | [TBF_ST_FLOW] = { |
| 314 | .in_event_mask = |
Pau Espin Pedrol | c32c4a3 | 2021-07-23 18:27:57 +0200 | [diff] [blame] | 315 | X(TBF_EV_LAST_DL_DATA_SENT) | |
Pau Espin Pedrol | efcb046 | 2021-07-26 12:33:39 +0200 | [diff] [blame] | 316 | X(TBF_EV_LAST_UL_DATA_RECVD) | |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 317 | X(TBF_EV_FINAL_ACK_RECVD) | |
| 318 | X(TBF_EV_MAX_N3101) | |
| 319 | X(TBF_EV_MAX_N3105), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 320 | .out_state_mask = |
| 321 | X(TBF_ST_FINISHED) | |
| 322 | X(TBF_ST_WAIT_RELEASE) | |
| 323 | X(TBF_ST_RELEASING), |
| 324 | .name = "FLOW", |
Pau Espin Pedrol | c32c4a3 | 2021-07-23 18:27:57 +0200 | [diff] [blame] | 325 | .action = st_flow, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 326 | }, |
| 327 | [TBF_ST_FINISHED] = { |
| 328 | .in_event_mask = |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 329 | X(TBF_EV_FINAL_ACK_RECVD) | |
| 330 | X(TBF_EV_MAX_N3103) | |
| 331 | X(TBF_EV_MAX_N3105), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 332 | .out_state_mask = |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 333 | X(TBF_ST_WAIT_RELEASE) | |
| 334 | X(TBF_ST_RELEASING), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 335 | .name = "FINISHED", |
Pau Espin Pedrol | efcb046 | 2021-07-26 12:33:39 +0200 | [diff] [blame] | 336 | .action = st_finished, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 337 | }, |
| 338 | [TBF_ST_WAIT_RELEASE] = { |
| 339 | .in_event_mask = |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 340 | X(TBF_EV_FINAL_ACK_RECVD) | |
| 341 | X(TBF_EV_MAX_N3101) | |
| 342 | X(TBF_EV_MAX_N3105), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 343 | .out_state_mask = |
| 344 | X(TBF_ST_RELEASING), |
| 345 | .name = "WAIT_RELEASE", |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 346 | .action = st_wait_release, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 347 | }, |
| 348 | [TBF_ST_RELEASING] = { |
| 349 | .in_event_mask = |
| 350 | 0, |
| 351 | .out_state_mask = |
| 352 | 0, |
| 353 | .name = "RELEASING", |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 354 | .onenter = st_releasing_on_enter, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 355 | }, |
| 356 | }; |
| 357 | |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 358 | void tbf_fsm_allstate_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 359 | { |
| 360 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
| 361 | switch (event) { |
| 362 | case TBF_EV_ASSIGN_DEL_CCCH: |
| 363 | mod_ass_type(ctx, GPRS_RLCMAC_FLAG_CCCH, false); |
| 364 | break; |
| 365 | default: |
| 366 | OSMO_ASSERT(0); |
| 367 | } |
| 368 | } |
| 369 | |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 370 | struct osmo_fsm tbf_fsm = { |
| 371 | .name = "TBF", |
| 372 | .states = tbf_fsm_states, |
| 373 | .num_states = ARRAY_SIZE(tbf_fsm_states), |
| 374 | .timer_cb = tbf_fsm_timer_cb, |
| 375 | .cleanup = tbf_fsm_cleanup, |
| 376 | .log_subsys = DTBF, |
| 377 | .event_names = tbf_fsm_event_names, |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 378 | .allstate_action = tbf_fsm_allstate_action, |
| 379 | .allstate_event_mask = X(TBF_EV_ASSIGN_DEL_CCCH), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 380 | }; |
| 381 | |
| 382 | static __attribute__((constructor)) void tbf_fsm_init(void) |
| 383 | { |
| 384 | OSMO_ASSERT(osmo_fsm_register(&tbf_fsm) == 0); |
| 385 | } |