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 | |
| 116 | static void st_assign(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 117 | { |
| 118 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
| 119 | switch (event) { |
| 120 | case TBF_EV_ASSIGN_ADD_CCCH: |
| 121 | mod_ass_type(ctx, GPRS_RLCMAC_FLAG_CCCH, true); |
| 122 | break; |
| 123 | case TBF_EV_ASSIGN_ADD_PACCH: |
| 124 | mod_ass_type(ctx, GPRS_RLCMAC_FLAG_PACCH, true); |
| 125 | break; |
Pau Espin Pedrol | 720e19e | 2021-07-22 19:56:37 +0200 | [diff] [blame] | 126 | case TBF_EV_ASSIGN_ACK_PACCH: |
| 127 | if (ctx->state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH)) { |
| 128 | /* We now know that the PACCH really existed */ |
| 129 | LOGPTBF(ctx->tbf, LOGL_INFO, |
| 130 | "The TBF has been confirmed on the PACCH, " |
| 131 | "changed type from CCCH to PACCH\n"); |
| 132 | mod_ass_type(ctx, GPRS_RLCMAC_FLAG_CCCH, false); |
| 133 | mod_ass_type(ctx, GPRS_RLCMAC_FLAG_PACCH, true); |
| 134 | } |
| 135 | tbf_fsm_state_chg(fi, TBF_ST_FLOW); |
| 136 | break; |
| 137 | case TBF_EV_ASSIGN_READY_CCCH: |
| 138 | /* change state to FLOW, so scheduler will start transmission */ |
| 139 | tbf_fsm_state_chg(fi, TBF_ST_FLOW); |
| 140 | break; |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 141 | default: |
| 142 | OSMO_ASSERT(0); |
| 143 | } |
| 144 | } |
| 145 | |
Pau Espin Pedrol | c32c4a3 | 2021-07-23 18:27:57 +0200 | [diff] [blame] | 146 | static void st_flow(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 147 | { |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 148 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
Pau Espin Pedrol | c32c4a3 | 2021-07-23 18:27:57 +0200 | [diff] [blame] | 149 | switch (event) { |
| 150 | case TBF_EV_LAST_DL_DATA_SENT: |
| 151 | case TBF_EV_LAST_UL_DATA_RECVD: |
| 152 | /* All data has been sent or received, change state to FINISHED */ |
| 153 | tbf_fsm_state_chg(fi, TBF_ST_FINISHED); |
| 154 | break; |
Pau Espin Pedrol | efcb046 | 2021-07-26 12:33:39 +0200 | [diff] [blame] | 155 | case TBF_EV_FINAL_ACK_RECVD: |
| 156 | /* We received Final Ack (DL ACK/NACK) from MS. move to |
| 157 | WAIT_RELEASE, we wait there for release or re-use the TBF in |
| 158 | case we receive more DL data to tx */ |
| 159 | tbf_fsm_state_chg(fi, TBF_ST_WAIT_RELEASE); |
| 160 | break; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 161 | case TBF_EV_MAX_N3101: |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 162 | ctx->T_release = 3169; |
| 163 | tbf_fsm_state_chg(fi, TBF_ST_RELEASING); |
| 164 | break; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 165 | case TBF_EV_MAX_N3105: |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 166 | ctx->T_release = 3195; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 167 | tbf_fsm_state_chg(fi, TBF_ST_RELEASING); |
| 168 | break; |
Pau Espin Pedrol | efcb046 | 2021-07-26 12:33:39 +0200 | [diff] [blame] | 169 | default: |
| 170 | OSMO_ASSERT(0); |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | static void st_finished(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 175 | { |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 176 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
Pau Espin Pedrol | efcb046 | 2021-07-26 12:33:39 +0200 | [diff] [blame] | 177 | switch (event) { |
| 178 | case TBF_EV_FINAL_ACK_RECVD: |
| 179 | /* We received Final Ack (DL ACK/NACK) from MS. move to |
| 180 | WAIT_RELEASE, we wait there for release or re-use the TBF in |
| 181 | case we receive more DL data to tx */ |
| 182 | tbf_fsm_state_chg(fi, TBF_ST_WAIT_RELEASE); |
| 183 | break; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 184 | case TBF_EV_MAX_N3103: |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 185 | ctx->T_release = 3169; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 186 | tbf_fsm_state_chg(fi, TBF_ST_RELEASING); |
| 187 | break; |
| 188 | case TBF_EV_MAX_N3105: |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 189 | ctx->T_release = 3195; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 190 | tbf_fsm_state_chg(fi, TBF_ST_RELEASING); |
| 191 | break; |
| 192 | default: |
| 193 | OSMO_ASSERT(0); |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | static void st_wait_release(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 198 | { |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 199 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 200 | switch (event) { |
| 201 | case TBF_EV_FINAL_ACK_RECVD: |
| 202 | /* ignore, duplicate ACK, we already know about since we are in WAIT_RELEASE */ |
| 203 | break; |
| 204 | case TBF_EV_MAX_N3101: |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 205 | ctx->T_release = 3169; |
| 206 | tbf_fsm_state_chg(fi, TBF_ST_RELEASING); |
| 207 | break; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 208 | case TBF_EV_MAX_N3105: |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 209 | ctx->T_release = 3195; |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 210 | tbf_fsm_state_chg(fi, TBF_ST_RELEASING); |
| 211 | break; |
Pau Espin Pedrol | c32c4a3 | 2021-07-23 18:27:57 +0200 | [diff] [blame] | 212 | default: |
| 213 | OSMO_ASSERT(0); |
| 214 | } |
| 215 | } |
| 216 | |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 217 | static void st_releasing_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_state) |
| 218 | { |
| 219 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
| 220 | unsigned long val; |
| 221 | |
| 222 | if (!ctx->T_release) |
| 223 | return; |
| 224 | |
| 225 | /* In general we should end up here with an assigned timer in ctx->T_release. Possible values are: |
| 226 | * T3195: Wait for reuse of TFI(s) when there is no response from the MS |
| 227 | * (radio failure or cell change) for this TBF/MBMS radio bearer. |
| 228 | * T3169: Wait for reuse of USF and TFI(s) after the MS uplink assignment for this TBF is invalid. |
| 229 | */ |
| 230 | val = osmo_tdef_get(tbf_ms(ctx->tbf)->bts->T_defs_bts, ctx->T_release, OSMO_TDEF_S, -1); |
| 231 | fi->T = ctx->T_release; |
| 232 | LOGPTBF(ctx->tbf, LOGL_DEBUG, "starting timer T%u with %lu sec. %u microsec\n", |
| 233 | ctx->T_release, val, 0); |
| 234 | osmo_timer_schedule(&fi->timer, val, 0); |
| 235 | } |
| 236 | |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 237 | static void tbf_fsm_cleanup(struct osmo_fsm_inst *fi, enum osmo_fsm_term_cause cause) |
| 238 | { |
| 239 | /* TODO: needed ? |
| 240 | * struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
| 241 | */ |
| 242 | } |
| 243 | |
| 244 | static int tbf_fsm_timer_cb(struct osmo_fsm_inst *fi) |
| 245 | { |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 246 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 247 | switch (fi->T) { |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 248 | case 3169: |
| 249 | case 3195: |
| 250 | tbf_free(ctx->tbf); |
| 251 | break; |
| 252 | default: |
| 253 | OSMO_ASSERT(0); |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 254 | } |
| 255 | return 0; |
| 256 | } |
| 257 | |
| 258 | static struct osmo_fsm_state tbf_fsm_states[] = { |
| 259 | [TBF_ST_NULL] = { |
| 260 | .in_event_mask = |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 261 | X(TBF_EV_ASSIGN_ADD_CCCH) | |
| 262 | X(TBF_EV_ASSIGN_ADD_PACCH), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 263 | .out_state_mask = |
| 264 | X(TBF_ST_ASSIGN) | |
| 265 | X(TBF_ST_FLOW) | |
| 266 | X(TBF_ST_RELEASING), |
| 267 | .name = "NULL", |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 268 | .action = st_null, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 269 | }, |
| 270 | [TBF_ST_ASSIGN] = { |
| 271 | .in_event_mask = |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 272 | X(TBF_EV_ASSIGN_ADD_CCCH) | |
Pau Espin Pedrol | 720e19e | 2021-07-22 19:56:37 +0200 | [diff] [blame] | 273 | X(TBF_EV_ASSIGN_ADD_PACCH) | |
| 274 | X(TBF_EV_ASSIGN_ACK_PACCH) | |
| 275 | X(TBF_EV_ASSIGN_READY_CCCH), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 276 | .out_state_mask = |
| 277 | X(TBF_ST_FLOW) | |
| 278 | X(TBF_ST_FINISHED) | |
| 279 | X(TBF_ST_RELEASING), |
| 280 | .name = "ASSIGN", |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 281 | .action = st_assign, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 282 | }, |
| 283 | [TBF_ST_FLOW] = { |
| 284 | .in_event_mask = |
Pau Espin Pedrol | c32c4a3 | 2021-07-23 18:27:57 +0200 | [diff] [blame] | 285 | X(TBF_EV_LAST_DL_DATA_SENT) | |
Pau Espin Pedrol | efcb046 | 2021-07-26 12:33:39 +0200 | [diff] [blame] | 286 | X(TBF_EV_LAST_UL_DATA_RECVD) | |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 287 | X(TBF_EV_FINAL_ACK_RECVD) | |
| 288 | X(TBF_EV_MAX_N3101) | |
| 289 | X(TBF_EV_MAX_N3105), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 290 | .out_state_mask = |
| 291 | X(TBF_ST_FINISHED) | |
| 292 | X(TBF_ST_WAIT_RELEASE) | |
| 293 | X(TBF_ST_RELEASING), |
| 294 | .name = "FLOW", |
Pau Espin Pedrol | c32c4a3 | 2021-07-23 18:27:57 +0200 | [diff] [blame] | 295 | .action = st_flow, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 296 | }, |
| 297 | [TBF_ST_FINISHED] = { |
| 298 | .in_event_mask = |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 299 | X(TBF_EV_FINAL_ACK_RECVD) | |
| 300 | X(TBF_EV_MAX_N3103) | |
| 301 | X(TBF_EV_MAX_N3105), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 302 | .out_state_mask = |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 303 | X(TBF_ST_WAIT_RELEASE) | |
| 304 | X(TBF_ST_RELEASING), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 305 | .name = "FINISHED", |
Pau Espin Pedrol | efcb046 | 2021-07-26 12:33:39 +0200 | [diff] [blame] | 306 | .action = st_finished, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 307 | }, |
| 308 | [TBF_ST_WAIT_RELEASE] = { |
| 309 | .in_event_mask = |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 310 | X(TBF_EV_FINAL_ACK_RECVD) | |
| 311 | X(TBF_EV_MAX_N3101) | |
| 312 | X(TBF_EV_MAX_N3105), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 313 | .out_state_mask = |
| 314 | X(TBF_ST_RELEASING), |
| 315 | .name = "WAIT_RELEASE", |
Pau Espin Pedrol | 55f600b | 2021-07-26 15:54:39 +0200 | [diff] [blame] | 316 | .action = st_wait_release, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 317 | }, |
| 318 | [TBF_ST_RELEASING] = { |
| 319 | .in_event_mask = |
| 320 | 0, |
| 321 | .out_state_mask = |
| 322 | 0, |
| 323 | .name = "RELEASING", |
Pau Espin Pedrol | cfb61d9 | 2021-07-26 17:17:02 +0200 | [diff] [blame] | 324 | .onenter = st_releasing_on_enter, |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 325 | }, |
| 326 | }; |
| 327 | |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 328 | void tbf_fsm_allstate_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 329 | { |
| 330 | struct tbf_fsm_ctx *ctx = (struct tbf_fsm_ctx *)fi->priv; |
| 331 | switch (event) { |
| 332 | case TBF_EV_ASSIGN_DEL_CCCH: |
| 333 | mod_ass_type(ctx, GPRS_RLCMAC_FLAG_CCCH, false); |
| 334 | break; |
| 335 | default: |
| 336 | OSMO_ASSERT(0); |
| 337 | } |
| 338 | } |
| 339 | |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 340 | struct osmo_fsm tbf_fsm = { |
| 341 | .name = "TBF", |
| 342 | .states = tbf_fsm_states, |
| 343 | .num_states = ARRAY_SIZE(tbf_fsm_states), |
| 344 | .timer_cb = tbf_fsm_timer_cb, |
| 345 | .cleanup = tbf_fsm_cleanup, |
| 346 | .log_subsys = DTBF, |
| 347 | .event_names = tbf_fsm_event_names, |
Pau Espin Pedrol | 33e8007 | 2021-07-22 19:20:50 +0200 | [diff] [blame] | 348 | .allstate_action = tbf_fsm_allstate_action, |
| 349 | .allstate_event_mask = X(TBF_EV_ASSIGN_DEL_CCCH), |
Pau Espin Pedrol | dc2aaac | 2021-05-14 12:50:46 +0200 | [diff] [blame] | 350 | }; |
| 351 | |
| 352 | static __attribute__((constructor)) void tbf_fsm_init(void) |
| 353 | { |
| 354 | OSMO_ASSERT(osmo_fsm_register(&tbf_fsm) == 0); |
| 355 | } |