Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1 | /* Osmocom Visitor Location Register (VLR): Location Update FSMs */ |
| 2 | |
| 3 | /* (C) 2016 by Harald Welte <laforge@gnumonks.org> |
| 4 | * |
| 5 | * All Rights Reserved |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Affero General Public License as published by |
| 9 | * the Free Software Foundation; either version 3 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU Affero General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Affero General Public License |
| 18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #include <osmocom/core/fsm.h> |
Max | 43b01b0 | 2017-09-15 11:22:30 +0200 | [diff] [blame] | 23 | #include <osmocom/gsm/gsm48.h> |
Neels Hofmeyr | 9084396 | 2017-09-04 15:04:35 +0200 | [diff] [blame] | 24 | #include <osmocom/msc/vlr.h> |
| 25 | #include <osmocom/msc/debug.h> |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 26 | |
| 27 | #include "vlr_core.h" |
| 28 | #include "vlr_auth_fsm.h" |
| 29 | #include "vlr_lu_fsm.h" |
| 30 | |
| 31 | #define S(x) (1 << (x)) |
| 32 | |
| 33 | #define LU_TIMEOUT_LONG 30 |
| 34 | |
| 35 | enum vlr_fsm_result { |
| 36 | VLR_FSM_RESULT_NONE, |
| 37 | VLR_FSM_RESULT_SUCCESS, |
| 38 | VLR_FSM_RESULT_FAILURE, |
| 39 | }; |
| 40 | |
| 41 | |
| 42 | /*********************************************************************** |
| 43 | * Update_HLR_VLR, TS 23.012 Chapter 4.1.2.4 |
| 44 | ***********************************************************************/ |
| 45 | |
| 46 | enum upd_hlr_vlr_state { |
| 47 | UPD_HLR_VLR_S_INIT, |
| 48 | UPD_HLR_VLR_S_WAIT_FOR_DATA, |
| 49 | UPD_HLR_VLR_S_DONE, |
| 50 | }; |
| 51 | |
| 52 | enum upd_hlr_vlr_evt { |
| 53 | UPD_HLR_VLR_E_START, |
| 54 | UPD_HLR_VLR_E_INS_SUB_DATA, |
| 55 | UPD_HLR_VLR_E_ACT_TRACE_MODE, |
| 56 | UPD_HLR_VLR_E_FW_CHECK_SS_IND, |
| 57 | UPD_HLR_VLR_E_UPD_LOC_ACK, |
| 58 | UPD_HLR_VLR_E_UPD_LOC_NACK, |
| 59 | }; |
| 60 | |
| 61 | static const struct value_string upd_hlr_vlr_event_names[] = { |
| 62 | OSMO_VALUE_STRING(UPD_HLR_VLR_E_START), |
| 63 | OSMO_VALUE_STRING(UPD_HLR_VLR_E_INS_SUB_DATA), |
| 64 | OSMO_VALUE_STRING(UPD_HLR_VLR_E_ACT_TRACE_MODE), |
| 65 | OSMO_VALUE_STRING(UPD_HLR_VLR_E_FW_CHECK_SS_IND), |
| 66 | OSMO_VALUE_STRING(UPD_HLR_VLR_E_UPD_LOC_ACK), |
| 67 | OSMO_VALUE_STRING(UPD_HLR_VLR_E_UPD_LOC_NACK), |
| 68 | { 0, NULL } |
| 69 | }; |
| 70 | |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 71 | static inline struct vlr_subscr *upd_hlr_vlr_fi_priv(struct osmo_fsm_inst *fi); |
| 72 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 73 | static void upd_hlr_vlr_fsm_init(struct osmo_fsm_inst *fi, uint32_t event, |
| 74 | void *data) |
| 75 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 76 | struct vlr_subscr *vsub = upd_hlr_vlr_fi_priv(fi); |
Max | 770fbd2 | 2018-01-24 12:48:33 +0100 | [diff] [blame] | 77 | int rc; |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 78 | |
| 79 | OSMO_ASSERT(event == UPD_HLR_VLR_E_START); |
| 80 | |
| 81 | /* Send UpdateLocation to HLR */ |
Max | 770fbd2 | 2018-01-24 12:48:33 +0100 | [diff] [blame] | 82 | rc = vlr_subscr_req_lu(vsub, vsub->vlr->cfg.is_ps); |
| 83 | if (rc < 0) |
| 84 | LOGPFSML(fi, LOGL_ERROR, "Failed to send UpdateLocation to HLR\n"); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 85 | osmo_fsm_inst_state_chg(fi, UPD_HLR_VLR_S_WAIT_FOR_DATA, |
| 86 | LU_TIMEOUT_LONG, 0); |
| 87 | } |
| 88 | |
| 89 | static void upd_hlr_vlr_fsm_wait_data(struct osmo_fsm_inst *fi, uint32_t event, |
| 90 | void *data) |
| 91 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 92 | struct vlr_subscr *vsub = upd_hlr_vlr_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 93 | |
| 94 | switch (event) { |
| 95 | case UPD_HLR_VLR_E_INS_SUB_DATA: |
| 96 | /* FIXME: Insert_Subscr_Data_VLR */ |
| 97 | break; |
| 98 | case UPD_HLR_VLR_E_ACT_TRACE_MODE: |
| 99 | /* TODO: Activate_Tracing_VLR */ |
| 100 | break; |
| 101 | case UPD_HLR_VLR_E_FW_CHECK_SS_IND: |
| 102 | /* TODO: Forward Check SS Ind to MSC */ |
| 103 | break; |
| 104 | case UPD_HLR_VLR_E_UPD_LOC_ACK: |
| 105 | /* Inside Update_HLR_VLR after UpdateLocationAck */ |
| 106 | vsub->sub_dataconf_by_hlr_ind = true; |
| 107 | vsub->loc_conf_in_hlr_ind = true; |
| 108 | osmo_fsm_inst_state_chg(fi, UPD_HLR_VLR_S_DONE, 0, 0); |
| 109 | osmo_fsm_inst_term(fi, OSMO_FSM_TERM_REGULAR, NULL); |
| 110 | break; |
| 111 | case UPD_HLR_VLR_E_UPD_LOC_NACK: |
| 112 | /* Inside Update_HLR_VLR after UpdateLocationNack */ |
| 113 | /* TODO: Check_User_Error_In_Serving_Network_Entity */ |
| 114 | vsub->sub_dataconf_by_hlr_ind = false; |
| 115 | vsub->loc_conf_in_hlr_ind = false; |
| 116 | osmo_fsm_inst_state_chg(fi, UPD_HLR_VLR_S_DONE, 0, 0); |
| 117 | /* Data is a pointer to a gsm48_gmm_cause which we |
| 118 | * simply pass through */ |
| 119 | osmo_fsm_inst_term(fi, OSMO_FSM_TERM_REGULAR, data); |
| 120 | break; |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | static const struct osmo_fsm_state upd_hlr_vlr_states[] = { |
| 125 | [UPD_HLR_VLR_S_INIT] = { |
| 126 | .in_event_mask = S(UPD_HLR_VLR_E_START), |
| 127 | .out_state_mask = S(UPD_HLR_VLR_S_WAIT_FOR_DATA), |
| 128 | .name = OSMO_STRINGIFY(UPD_HLR_VLR_S_INIT), |
| 129 | .action = upd_hlr_vlr_fsm_init, |
| 130 | }, |
| 131 | [UPD_HLR_VLR_S_WAIT_FOR_DATA] = { |
| 132 | .in_event_mask = S(UPD_HLR_VLR_E_INS_SUB_DATA) | |
| 133 | S(UPD_HLR_VLR_E_ACT_TRACE_MODE) | |
| 134 | S(UPD_HLR_VLR_E_FW_CHECK_SS_IND) | |
| 135 | S(UPD_HLR_VLR_E_UPD_LOC_ACK) | |
| 136 | S(UPD_HLR_VLR_E_UPD_LOC_NACK), |
| 137 | .out_state_mask = S(UPD_HLR_VLR_S_DONE), |
| 138 | .name = OSMO_STRINGIFY(UPD_HLR_VLR_S_WAIT_FOR_DATA), |
| 139 | .action = upd_hlr_vlr_fsm_wait_data, |
| 140 | }, |
| 141 | [UPD_HLR_VLR_S_DONE] = { |
| 142 | .name = OSMO_STRINGIFY(UPD_HLR_VLR_S_DONE), |
| 143 | }, |
| 144 | }; |
| 145 | |
| 146 | static struct osmo_fsm upd_hlr_vlr_fsm = { |
| 147 | .name = "upd_hlr_vlr_fsm", |
| 148 | .states = upd_hlr_vlr_states, |
| 149 | .num_states = ARRAY_SIZE(upd_hlr_vlr_states), |
| 150 | .allstate_event_mask = 0, |
| 151 | .allstate_action = NULL, |
| 152 | .log_subsys = DVLR, |
| 153 | .event_names = upd_hlr_vlr_event_names, |
| 154 | }; |
| 155 | |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 156 | static inline struct vlr_subscr *upd_hlr_vlr_fi_priv(struct osmo_fsm_inst *fi) |
| 157 | { |
| 158 | OSMO_ASSERT(fi->fsm == &upd_hlr_vlr_fsm); |
| 159 | return (struct vlr_subscr*)fi->priv; |
| 160 | } |
| 161 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 162 | struct osmo_fsm_inst * |
| 163 | upd_hlr_vlr_proc_start(struct osmo_fsm_inst *parent, |
| 164 | struct vlr_subscr *vsub, |
| 165 | uint32_t parent_event) |
| 166 | { |
| 167 | struct osmo_fsm_inst *fi; |
| 168 | |
| 169 | fi = osmo_fsm_inst_alloc_child(&upd_hlr_vlr_fsm, parent, |
| 170 | parent_event); |
| 171 | if (!fi) |
| 172 | return NULL; |
| 173 | |
| 174 | fi->priv = vsub; |
| 175 | osmo_fsm_inst_dispatch(fi, UPD_HLR_VLR_E_START, NULL); |
| 176 | |
| 177 | return fi; |
| 178 | } |
| 179 | |
| 180 | |
| 181 | /*********************************************************************** |
| 182 | * Subscriber_Present_VLR, TS 29.002 Chapter 25.10.1 |
| 183 | ***********************************************************************/ |
| 184 | |
| 185 | enum sub_pres_vlr_state { |
| 186 | SUB_PRES_VLR_S_INIT, |
| 187 | SUB_PRES_VLR_S_WAIT_FOR_HLR, |
| 188 | SUB_PRES_VLR_S_DONE, |
| 189 | }; |
| 190 | |
| 191 | enum sub_pres_vlr_event { |
| 192 | SUB_PRES_VLR_E_START, |
| 193 | SUB_PRES_VLR_E_READY_SM_CNF, |
| 194 | SUB_PRES_VLR_E_READY_SM_ERR, |
| 195 | }; |
| 196 | |
| 197 | static const struct value_string sub_pres_vlr_event_names[] = { |
| 198 | OSMO_VALUE_STRING(SUB_PRES_VLR_E_START), |
| 199 | OSMO_VALUE_STRING(SUB_PRES_VLR_E_READY_SM_CNF), |
| 200 | OSMO_VALUE_STRING(SUB_PRES_VLR_E_READY_SM_ERR), |
| 201 | { 0, NULL } |
| 202 | }; |
| 203 | |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 204 | static inline struct vlr_subscr *sub_pres_vlr_fi_priv(struct osmo_fsm_inst *fi); |
| 205 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 206 | static void sub_pres_vlr_fsm_init(struct osmo_fsm_inst *fi, uint32_t event, |
| 207 | void *data) |
| 208 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 209 | struct vlr_subscr *vsub = sub_pres_vlr_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 210 | OSMO_ASSERT(event == SUB_PRES_VLR_E_START); |
| 211 | |
| 212 | if (!vsub->ms_not_reachable_flag) { |
| 213 | osmo_fsm_inst_state_chg(fi, SUB_PRES_VLR_S_DONE, 0, 0); |
| 214 | osmo_fsm_inst_term(fi, OSMO_FSM_TERM_REGULAR, NULL); |
| 215 | return; |
| 216 | } |
| 217 | /* FIXME: Send READY_FOR_SM via GSUP */ |
| 218 | osmo_fsm_inst_state_chg(fi, SUB_PRES_VLR_S_WAIT_FOR_HLR, |
| 219 | LU_TIMEOUT_LONG, 0); |
| 220 | } |
| 221 | |
| 222 | static void sub_pres_vlr_fsm_wait_hlr(struct osmo_fsm_inst *fi, uint32_t event, |
| 223 | void *data) |
| 224 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 225 | struct vlr_subscr *vsub = sub_pres_vlr_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 226 | |
| 227 | switch (event) { |
| 228 | case SUB_PRES_VLR_E_READY_SM_CNF: |
| 229 | vsub->ms_not_reachable_flag = false; |
| 230 | break; |
| 231 | case SUB_PRES_VLR_E_READY_SM_ERR: |
| 232 | break; |
| 233 | } |
| 234 | osmo_fsm_inst_state_chg(fi, SUB_PRES_VLR_S_DONE, 0, 0); |
| 235 | osmo_fsm_inst_term(fi, OSMO_FSM_TERM_REGULAR, NULL); |
| 236 | } |
| 237 | |
| 238 | static const struct osmo_fsm_state sub_pres_vlr_states[] = { |
| 239 | [SUB_PRES_VLR_S_INIT] = { |
| 240 | .in_event_mask = S(SUB_PRES_VLR_E_START), |
| 241 | .out_state_mask = S(SUB_PRES_VLR_S_WAIT_FOR_HLR) | |
| 242 | S(SUB_PRES_VLR_S_DONE), |
| 243 | .name = OSMO_STRINGIFY(SUB_PRES_VLR_S_INIT), |
| 244 | .action = sub_pres_vlr_fsm_init, |
| 245 | }, |
| 246 | [SUB_PRES_VLR_S_WAIT_FOR_HLR] = { |
| 247 | .in_event_mask = S(SUB_PRES_VLR_E_READY_SM_CNF) | |
| 248 | S(SUB_PRES_VLR_E_READY_SM_ERR), |
| 249 | .out_state_mask = S(SUB_PRES_VLR_S_DONE), |
| 250 | .name = OSMO_STRINGIFY(SUB_PRES_VLR_S_WAIT_FOR_HLR), |
| 251 | .action = sub_pres_vlr_fsm_wait_hlr, |
| 252 | }, |
| 253 | [SUB_PRES_VLR_S_DONE] = { |
| 254 | .name = OSMO_STRINGIFY(SUB_PRES_VLR_S_DONE), |
| 255 | }, |
| 256 | }; |
| 257 | |
| 258 | static struct osmo_fsm sub_pres_vlr_fsm = { |
| 259 | .name = "sub_pres_vlr_fsm", |
| 260 | .states = sub_pres_vlr_states, |
| 261 | .num_states = ARRAY_SIZE(sub_pres_vlr_states), |
| 262 | .allstate_event_mask = 0, |
| 263 | .allstate_action = NULL, |
| 264 | .log_subsys = DVLR, |
| 265 | .event_names = sub_pres_vlr_event_names, |
| 266 | }; |
| 267 | |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 268 | static inline struct vlr_subscr *sub_pres_vlr_fi_priv(struct osmo_fsm_inst *fi) |
| 269 | { |
| 270 | OSMO_ASSERT(fi->fsm == &sub_pres_vlr_fsm); |
| 271 | return (struct vlr_subscr*)fi->priv; |
| 272 | } |
| 273 | |
Neels Hofmeyr | 1a5bcd5 | 2017-11-18 22:19:55 +0100 | [diff] [blame] | 274 | /* Note that the start event is dispatched right away, so in case the FSM immediately concludes from that |
| 275 | * event, the created FSM struct may no longer be valid as it already deallocated again, and it may |
| 276 | * furthermore already have invoked the parent FSM instance's deallocation as well. Hence, instead of |
| 277 | * returning, store the created FSM instance address in *fi_p before dispatching the event. It is thus |
| 278 | * possible to store the instance's pointer in a parent FSM instance without running danger of using |
| 279 | * already freed memory. */ |
| 280 | void sub_pres_vlr_fsm_start(struct osmo_fsm_inst **fi_p, |
| 281 | struct osmo_fsm_inst *parent, |
| 282 | struct vlr_subscr *vsub, |
| 283 | uint32_t term_event) |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 284 | { |
| 285 | struct osmo_fsm_inst *fi; |
| 286 | |
Neels Hofmeyr | 1a5bcd5 | 2017-11-18 22:19:55 +0100 | [diff] [blame] | 287 | OSMO_ASSERT(fi_p); |
| 288 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 289 | fi = osmo_fsm_inst_alloc_child(&sub_pres_vlr_fsm, parent, |
| 290 | term_event); |
Neels Hofmeyr | 1a5bcd5 | 2017-11-18 22:19:55 +0100 | [diff] [blame] | 291 | *fi_p = fi; |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 292 | if (!fi) |
Neels Hofmeyr | 1a5bcd5 | 2017-11-18 22:19:55 +0100 | [diff] [blame] | 293 | return; |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 294 | |
| 295 | fi->priv = vsub; |
| 296 | osmo_fsm_inst_dispatch(fi, SUB_PRES_VLR_E_START, NULL); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | /*********************************************************************** |
| 300 | * Location_Update_Completion_VLR, TS 23.012 Chapter 4.1.2.3 |
| 301 | ***********************************************************************/ |
| 302 | |
| 303 | enum lu_compl_vlr_state { |
| 304 | LU_COMPL_VLR_S_INIT, |
| 305 | LU_COMPL_VLR_S_WAIT_SUB_PRES, |
| 306 | LU_COMPL_VLR_S_WAIT_IMEI, |
| 307 | LU_COMPL_VLR_S_WAIT_IMEI_TMSI, |
| 308 | LU_COMPL_VLR_S_WAIT_TMSI_CNF, |
| 309 | LU_COMPL_VLR_S_DONE, |
| 310 | }; |
| 311 | |
| 312 | enum lu_compl_vlr_event { |
| 313 | LU_COMPL_VLR_E_START, |
| 314 | LU_COMPL_VLR_E_SUB_PRES_COMPL, |
| 315 | LU_COMPL_VLR_E_IMEI_CHECK_ACK, |
| 316 | LU_COMPL_VLR_E_IMEI_CHECK_NACK, |
| 317 | LU_COMPL_VLR_E_NEW_TMSI_ACK, |
| 318 | }; |
| 319 | |
| 320 | static const struct value_string lu_compl_vlr_event_names[] = { |
| 321 | OSMO_VALUE_STRING(LU_COMPL_VLR_E_START), |
| 322 | OSMO_VALUE_STRING(LU_COMPL_VLR_E_SUB_PRES_COMPL), |
| 323 | OSMO_VALUE_STRING(LU_COMPL_VLR_E_IMEI_CHECK_ACK), |
| 324 | OSMO_VALUE_STRING(LU_COMPL_VLR_E_IMEI_CHECK_NACK), |
| 325 | OSMO_VALUE_STRING(LU_COMPL_VLR_E_NEW_TMSI_ACK), |
| 326 | { 0, NULL } |
| 327 | }; |
| 328 | |
| 329 | struct lu_compl_vlr_priv { |
| 330 | struct vlr_subscr *vsub; |
| 331 | void *msc_conn_ref; |
| 332 | struct osmo_fsm_inst *sub_pres_vlr_fsm; |
| 333 | uint32_t parent_event_success; |
| 334 | uint32_t parent_event_failure; |
| 335 | void *parent_event_data; |
| 336 | enum vlr_fsm_result result; |
| 337 | uint8_t cause; |
| 338 | bool assign_tmsi; |
| 339 | }; |
| 340 | |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 341 | static inline struct lu_compl_vlr_priv *lu_compl_vlr_fi_priv(struct osmo_fsm_inst *fi); |
| 342 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 343 | static void _vlr_lu_compl_fsm_done(struct osmo_fsm_inst *fi, |
| 344 | enum vlr_fsm_result result, |
| 345 | uint8_t cause) |
| 346 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 347 | struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 348 | lcvp->result = result; |
| 349 | lcvp->cause = cause; |
| 350 | osmo_fsm_inst_state_chg(fi, LU_COMPL_VLR_S_DONE, 0, 0); |
| 351 | } |
| 352 | |
| 353 | static void vlr_lu_compl_fsm_success(struct osmo_fsm_inst *fi) |
| 354 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 355 | struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 356 | struct vlr_subscr *vsub = lcvp->vsub; |
| 357 | if (!vsub->lu_complete) { |
| 358 | vsub->lu_complete = true; |
| 359 | /* Balanced by vlr_subscr_rx_imsi_detach() */ |
| 360 | vlr_subscr_get(vsub); |
| 361 | } |
| 362 | _vlr_lu_compl_fsm_done(fi, VLR_FSM_RESULT_SUCCESS, 0); |
| 363 | } |
| 364 | |
| 365 | static void vlr_lu_compl_fsm_failure(struct osmo_fsm_inst *fi, uint8_t cause) |
| 366 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 367 | struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 368 | lcvp->vsub->vlr->ops.tx_lu_rej(lcvp->msc_conn_ref, cause); |
| 369 | _vlr_lu_compl_fsm_done(fi, VLR_FSM_RESULT_FAILURE, cause); |
| 370 | } |
| 371 | |
| 372 | static void vlr_lu_compl_fsm_dispatch_result(struct osmo_fsm_inst *fi, |
| 373 | uint32_t prev_state) |
| 374 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 375 | struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 376 | if (!fi->proc.parent) { |
| 377 | LOGPFSML(fi, LOGL_ERROR, "No parent FSM\n"); |
| 378 | return; |
| 379 | } |
| 380 | osmo_fsm_inst_dispatch(fi->proc.parent, |
| 381 | (lcvp->result == VLR_FSM_RESULT_SUCCESS) |
| 382 | ? lcvp->parent_event_success |
| 383 | : lcvp->parent_event_failure, |
| 384 | &lcvp->cause); |
| 385 | } |
| 386 | |
| 387 | static void lu_compl_vlr_init(struct osmo_fsm_inst *fi, uint32_t event, |
| 388 | void *data) |
| 389 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 390 | struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 391 | struct vlr_subscr *vsub = lcvp->vsub; |
| 392 | struct vlr_instance *vlr; |
| 393 | OSMO_ASSERT(vsub); |
| 394 | vlr = vsub->vlr; |
| 395 | OSMO_ASSERT(vlr); |
| 396 | |
| 397 | OSMO_ASSERT(event == LU_COMPL_VLR_E_START); |
| 398 | |
| 399 | /* TODO: National Roaming restrictions? */ |
| 400 | /* TODO: Roaming restriction due to unsupported feature in subscriber |
| 401 | * data? */ |
| 402 | /* TODO: Regional subscription restriction? */ |
| 403 | /* TODO: Administrative restriction of subscribres' access feature? */ |
| 404 | /* TODO: AccessRestrictuionData parameter available? */ |
| 405 | /* TODO: AccessRestrictionData permits RAT? */ |
| 406 | /* Node 1 */ |
| 407 | /* TODO: Autonomous CSG supported in VPLMN and allowed by HPLMN? */ |
| 408 | /* TODO: Hybrid Cel / CSG Cell */ |
| 409 | /* Node 2 */ |
| 410 | vsub->la_allowed = true; |
| 411 | vsub->imsi_detached_flag = false; |
| 412 | /* Start Subscriber_Present_VLR Procedure */ |
| 413 | osmo_fsm_inst_state_chg(fi, LU_COMPL_VLR_S_WAIT_SUB_PRES, |
| 414 | LU_TIMEOUT_LONG, 0); |
| 415 | |
Neels Hofmeyr | 1a5bcd5 | 2017-11-18 22:19:55 +0100 | [diff] [blame] | 416 | sub_pres_vlr_fsm_start(&lcvp->sub_pres_vlr_fsm, fi, vsub, LU_COMPL_VLR_E_SUB_PRES_COMPL); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 417 | } |
| 418 | |
| 419 | static void lu_compl_vlr_new_tmsi(struct osmo_fsm_inst *fi) |
| 420 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 421 | struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 422 | struct vlr_subscr *vsub = lcvp->vsub; |
| 423 | struct vlr_instance *vlr = vsub->vlr; |
| 424 | |
| 425 | LOGPFSM(fi, "%s()\n", __func__); |
| 426 | |
| 427 | if (vlr_subscr_alloc_tmsi(vsub)) { |
| 428 | vlr_lu_compl_fsm_failure(fi, |
| 429 | GSM48_REJECT_SRV_OPT_TMP_OUT_OF_ORDER); |
| 430 | return; |
| 431 | } |
| 432 | |
| 433 | osmo_fsm_inst_state_chg(fi, LU_COMPL_VLR_S_WAIT_TMSI_CNF, |
| 434 | vlr_timer(vlr, 3250), 3250); |
| 435 | |
| 436 | vlr->ops.tx_lu_acc(lcvp->msc_conn_ref, vsub->tmsi_new); |
| 437 | } |
| 438 | |
| 439 | /* After completion of Subscriber_Present_VLR */ |
| 440 | static void lu_compl_vlr_wait_subscr_pres(struct osmo_fsm_inst *fi, |
| 441 | uint32_t event, |
| 442 | void *data) |
| 443 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 444 | struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 445 | struct vlr_subscr *vsub = lcvp->vsub; |
| 446 | struct vlr_instance *vlr = vsub->vlr; |
| 447 | |
| 448 | OSMO_ASSERT(event == LU_COMPL_VLR_E_SUB_PRES_COMPL); |
| 449 | |
| 450 | lcvp->sub_pres_vlr_fsm = NULL; |
| 451 | |
| 452 | /* TODO: Trace_Subscriber_Activity_VLR */ |
| 453 | |
| 454 | if (vlr->cfg.check_imei_rqd) { |
| 455 | /* Check IMEI VLR */ |
| 456 | osmo_fsm_inst_state_chg(fi, |
| 457 | lcvp->assign_tmsi ? |
| 458 | LU_COMPL_VLR_S_WAIT_IMEI_TMSI |
| 459 | : LU_COMPL_VLR_S_WAIT_IMEI, |
| 460 | vlr_timer(vlr, 3270), 3270); |
| 461 | vlr->ops.tx_id_req(lcvp->msc_conn_ref, GSM_MI_TYPE_IMEI); |
| 462 | return; |
| 463 | } |
| 464 | |
| 465 | /* Do we need to allocate a TMSI? */ |
| 466 | if (lcvp->assign_tmsi) { |
| 467 | lu_compl_vlr_new_tmsi(fi); |
| 468 | return; |
| 469 | } |
| 470 | |
| 471 | /* Location Updating Accept */ |
| 472 | vlr->ops.tx_lu_acc(lcvp->msc_conn_ref, GSM_RESERVED_TMSI); |
| 473 | vlr_lu_compl_fsm_success(fi); |
| 474 | } |
| 475 | |
| 476 | /* Waiting for completion of CHECK_IMEI_VLR */ |
| 477 | static void lu_compl_vlr_wait_imei(struct osmo_fsm_inst *fi, uint32_t event, |
| 478 | void *data) |
| 479 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 480 | struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 481 | struct vlr_subscr *vsub = lcvp->vsub; |
| 482 | struct vlr_instance *vlr = vsub->vlr; |
| 483 | |
| 484 | switch (event) { |
| 485 | case LU_COMPL_VLR_E_IMEI_CHECK_ACK: |
| 486 | if (!vsub->imei[0]) { |
| 487 | /* Abort: Do nothing */ |
| 488 | vlr_lu_compl_fsm_failure(fi, |
| 489 | GSM48_REJECT_PROTOCOL_ERROR); |
| 490 | return; |
| 491 | } |
| 492 | /* Pass */ |
| 493 | break; |
| 494 | |
| 495 | case LU_COMPL_VLR_E_IMEI_CHECK_NACK: |
| 496 | vlr_lu_compl_fsm_failure(fi, GSM48_REJECT_ILLEGAL_ME); |
| 497 | /* FIXME: IMEI Check Fail to VLR Application (Detach IMSI VLR) */ |
| 498 | return; |
| 499 | } |
| 500 | |
| 501 | /* IMEI is available. Allocate TMSI if needed. */ |
| 502 | if (lcvp->assign_tmsi) { |
| 503 | if (fi->state != LU_COMPL_VLR_S_WAIT_IMEI_TMSI) |
| 504 | LOGPFSML(fi, LOGL_ERROR, |
| 505 | "TMSI required, expected to be in state" |
| 506 | " LU_COMPL_VLR_S_WAIT_IMEI_TMSI," |
| 507 | " am in %s instead\n", |
| 508 | osmo_fsm_state_name(fi->fsm, fi->state)); |
| 509 | /* Logged an error, continue anyway. */ |
| 510 | |
| 511 | lu_compl_vlr_new_tmsi(fi); |
| 512 | |
| 513 | /* Wait for TMSI ack */ |
| 514 | return; |
| 515 | } |
| 516 | |
| 517 | /* No TMSI needed, accept now. */ |
| 518 | vlr->ops.tx_lu_acc(lcvp->msc_conn_ref, GSM_RESERVED_TMSI); |
| 519 | vlr_lu_compl_fsm_success(fi); |
| 520 | } |
| 521 | |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 522 | static inline struct lu_compl_vlr_priv *lu_compl_vlr_fi_priv(struct osmo_fsm_inst *fi); |
| 523 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 524 | /* Waiting for TMSI confirmation */ |
| 525 | static void lu_compl_vlr_wait_tmsi(struct osmo_fsm_inst *fi, uint32_t event, |
| 526 | void *data) |
| 527 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 528 | struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 529 | struct vlr_subscr *vsub = lcvp->vsub; |
| 530 | |
| 531 | OSMO_ASSERT(event == LU_COMPL_VLR_E_NEW_TMSI_ACK); |
| 532 | |
| 533 | if (!vsub || vsub->tmsi_new == GSM_RESERVED_TMSI) { |
| 534 | LOGPFSML(fi, LOGL_ERROR, "TMSI Realloc Compl implies that" |
| 535 | " the subscriber has a new TMSI allocated, but" |
| 536 | " the new TMSI is unset.\n"); |
| 537 | vlr_lu_compl_fsm_failure(fi, GSM48_REJECT_NETWORK_FAILURE); |
| 538 | return; |
| 539 | } |
| 540 | |
| 541 | vsub->tmsi = vsub->tmsi_new; |
| 542 | vsub->tmsi_new = GSM_RESERVED_TMSI; |
| 543 | |
| 544 | vlr_lu_compl_fsm_success(fi); |
| 545 | } |
| 546 | |
| 547 | static const struct osmo_fsm_state lu_compl_vlr_states[] = { |
| 548 | [LU_COMPL_VLR_S_INIT] = { |
| 549 | .in_event_mask = S(LU_COMPL_VLR_E_START), |
| 550 | .out_state_mask = S(LU_COMPL_VLR_S_DONE) | |
| 551 | S(LU_COMPL_VLR_S_WAIT_SUB_PRES) | |
| 552 | S(LU_COMPL_VLR_S_WAIT_IMEI), |
| 553 | .name = OSMO_STRINGIFY(LU_COMPL_VLR_S_INIT), |
| 554 | .action = lu_compl_vlr_init, |
| 555 | }, |
| 556 | [LU_COMPL_VLR_S_WAIT_SUB_PRES] = { |
| 557 | .in_event_mask = S(LU_COMPL_VLR_E_SUB_PRES_COMPL), |
| 558 | .out_state_mask = S(LU_COMPL_VLR_S_WAIT_IMEI) | |
| 559 | S(LU_COMPL_VLR_S_WAIT_IMEI_TMSI) | |
| 560 | S(LU_COMPL_VLR_S_WAIT_TMSI_CNF) | |
| 561 | S(LU_COMPL_VLR_S_DONE), |
| 562 | .name = OSMO_STRINGIFY(LU_COMPL_VLR_S_WAIT_SUB_PRES), |
| 563 | .action = lu_compl_vlr_wait_subscr_pres, |
| 564 | }, |
| 565 | [LU_COMPL_VLR_S_WAIT_IMEI] = { |
| 566 | .in_event_mask = S(LU_COMPL_VLR_E_IMEI_CHECK_ACK) | |
| 567 | S(LU_COMPL_VLR_E_IMEI_CHECK_NACK), |
| 568 | .out_state_mask = S(LU_COMPL_VLR_S_DONE), |
| 569 | .name = OSMO_STRINGIFY(LU_COMPL_VLR_S_WAIT_IMEI), |
| 570 | .action = lu_compl_vlr_wait_imei, |
| 571 | }, |
| 572 | [LU_COMPL_VLR_S_WAIT_IMEI_TMSI] = { |
| 573 | .in_event_mask = S(LU_COMPL_VLR_E_IMEI_CHECK_ACK) | |
| 574 | S(LU_COMPL_VLR_E_IMEI_CHECK_NACK), |
| 575 | .out_state_mask = S(LU_COMPL_VLR_S_DONE) | |
| 576 | S(LU_COMPL_VLR_S_WAIT_TMSI_CNF), |
| 577 | .name = OSMO_STRINGIFY(LU_COMPL_VLR_S_WAIT_IMEI_TMSI), |
| 578 | .action = lu_compl_vlr_wait_imei, |
| 579 | }, |
| 580 | [LU_COMPL_VLR_S_WAIT_TMSI_CNF] = { |
| 581 | .in_event_mask = S(LU_COMPL_VLR_E_NEW_TMSI_ACK), |
| 582 | .out_state_mask = S(LU_COMPL_VLR_S_DONE), |
| 583 | .name = OSMO_STRINGIFY(LU_COMPL_VLR_S_WAIT_TMSI_CNF), |
| 584 | .action = lu_compl_vlr_wait_tmsi, |
| 585 | }, |
| 586 | [LU_COMPL_VLR_S_DONE] = { |
| 587 | .name = OSMO_STRINGIFY(LU_COMPL_VLR_S_DONE), |
| 588 | .onenter = vlr_lu_compl_fsm_dispatch_result, |
| 589 | }, |
| 590 | }; |
| 591 | |
| 592 | static struct osmo_fsm lu_compl_vlr_fsm = { |
| 593 | .name = "lu_compl_vlr_fsm", |
| 594 | .states = lu_compl_vlr_states, |
| 595 | .num_states = ARRAY_SIZE(lu_compl_vlr_states), |
| 596 | .allstate_event_mask = 0, |
| 597 | .allstate_action = NULL, |
| 598 | .log_subsys = DVLR, |
| 599 | .event_names = lu_compl_vlr_event_names, |
| 600 | }; |
| 601 | |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 602 | static inline struct lu_compl_vlr_priv *lu_compl_vlr_fi_priv(struct osmo_fsm_inst *fi) |
| 603 | { |
| 604 | OSMO_ASSERT(fi->fsm == &lu_compl_vlr_fsm); |
| 605 | return (struct lu_compl_vlr_priv*)fi->priv; |
| 606 | } |
| 607 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 608 | struct osmo_fsm_inst * |
| 609 | lu_compl_vlr_proc_alloc(struct osmo_fsm_inst *parent, |
| 610 | struct vlr_subscr *vsub, |
| 611 | void *msc_conn_ref, |
| 612 | uint32_t parent_event_success, |
| 613 | uint32_t parent_event_failure, |
| 614 | bool assign_tmsi) |
| 615 | { |
| 616 | struct osmo_fsm_inst *fi; |
| 617 | struct lu_compl_vlr_priv *lcvp; |
| 618 | |
| 619 | fi = osmo_fsm_inst_alloc_child(&lu_compl_vlr_fsm, parent, |
| 620 | parent_event_failure); |
| 621 | if (!fi) |
| 622 | return NULL; |
| 623 | |
| 624 | lcvp = talloc_zero(fi, struct lu_compl_vlr_priv); |
| 625 | lcvp->vsub = vsub; |
| 626 | lcvp->msc_conn_ref = msc_conn_ref; |
| 627 | lcvp->parent_event_success = parent_event_success; |
| 628 | lcvp->parent_event_failure = parent_event_failure; |
| 629 | lcvp->assign_tmsi = assign_tmsi; |
| 630 | fi->priv = lcvp; |
| 631 | |
| 632 | return fi; |
| 633 | } |
| 634 | |
| 635 | |
| 636 | /*********************************************************************** |
| 637 | * Update_Location_Area_VLR, TS 23.012 Chapter 4.1.2.1 |
| 638 | ***********************************************************************/ |
| 639 | |
| 640 | static const struct value_string fsm_lu_event_names[] = { |
| 641 | OSMO_VALUE_STRING(VLR_ULA_E_UPDATE_LA), |
| 642 | OSMO_VALUE_STRING(VLR_ULA_E_SEND_ID_ACK), |
| 643 | OSMO_VALUE_STRING(VLR_ULA_E_SEND_ID_NACK), |
| 644 | OSMO_VALUE_STRING(VLR_ULA_E_AUTH_RES), |
| 645 | OSMO_VALUE_STRING(VLR_ULA_E_CIPH_RES), |
| 646 | OSMO_VALUE_STRING(VLR_ULA_E_ID_IMSI), |
| 647 | OSMO_VALUE_STRING(VLR_ULA_E_ID_IMEI), |
| 648 | OSMO_VALUE_STRING(VLR_ULA_E_ID_IMEISV), |
| 649 | OSMO_VALUE_STRING(VLR_ULA_E_HLR_LU_RES), |
| 650 | OSMO_VALUE_STRING(VLR_ULA_E_UPD_HLR_COMPL), |
| 651 | OSMO_VALUE_STRING(VLR_ULA_E_LU_COMPL_SUCCESS), |
| 652 | OSMO_VALUE_STRING(VLR_ULA_E_LU_COMPL_FAILURE), |
| 653 | OSMO_VALUE_STRING(VLR_ULA_E_NEW_TMSI_ACK), |
| 654 | { 0, NULL } |
| 655 | }; |
| 656 | |
| 657 | struct lu_fsm_priv { |
| 658 | struct vlr_instance *vlr; |
| 659 | struct vlr_subscr *vsub; |
| 660 | void *msc_conn_ref; |
| 661 | struct osmo_fsm_inst *upd_hlr_vlr_fsm; |
| 662 | struct osmo_fsm_inst *lu_compl_vlr_fsm; |
| 663 | uint32_t parent_event_success; |
| 664 | uint32_t parent_event_failure; |
| 665 | void *parent_event_data; |
| 666 | enum vlr_fsm_result result; |
| 667 | uint8_t rej_cause; |
| 668 | |
| 669 | enum vlr_lu_type type; |
| 670 | bool lu_by_tmsi; |
| 671 | char imsi[16]; |
| 672 | uint32_t tmsi; |
| 673 | struct osmo_location_area_id old_lai; |
| 674 | struct osmo_location_area_id new_lai; |
| 675 | bool authentication_required; |
Harald Welte | 71c51df | 2017-12-23 18:51:48 +0100 | [diff] [blame] | 676 | bool ciphering_required; |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 677 | bool is_r99; |
| 678 | bool is_utran; |
| 679 | bool assign_tmsi; |
| 680 | }; |
| 681 | |
| 682 | |
| 683 | /* Determine if given location area is served by this VLR */ |
| 684 | static bool lai_in_this_vlr(struct vlr_instance *vlr, |
| 685 | const struct osmo_location_area_id *lai) |
| 686 | { |
| 687 | /* TODO: VLR needs to keep a locally configued list of LAIs */ |
| 688 | return true; |
| 689 | } |
| 690 | |
| 691 | /* Determine if authentication is required */ |
| 692 | static bool is_auth_required(struct lu_fsm_priv *lfp) |
| 693 | { |
| 694 | /* The cases where the authentication procedure should be used |
| 695 | * are defined in 3GPP TS 33.102 */ |
| 696 | /* For now we use a default value passed in to vlr_lu_fsm(). */ |
Harald Welte | 71c51df | 2017-12-23 18:51:48 +0100 | [diff] [blame] | 697 | return lfp->authentication_required || lfp->ciphering_required; |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 698 | } |
| 699 | |
| 700 | /* Determine if ciphering is required */ |
| 701 | static bool is_ciph_required(struct lu_fsm_priv *lfp) |
| 702 | { |
Harald Welte | 71c51df | 2017-12-23 18:51:48 +0100 | [diff] [blame] | 703 | return lfp->ciphering_required; |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 704 | } |
| 705 | |
| 706 | /* Determine if a HLR Update is required */ |
| 707 | static bool hlr_update_needed(struct vlr_subscr *vsub) |
| 708 | { |
| 709 | /* TODO: properly decide this, rather than always assuming we |
| 710 | * need to update the HLR. */ |
| 711 | return true; |
| 712 | } |
| 713 | |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 714 | static inline struct lu_fsm_priv *lu_fsm_fi_priv(struct osmo_fsm_inst *fi); |
| 715 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 716 | static void lu_fsm_dispatch_result(struct osmo_fsm_inst *fi, |
| 717 | uint32_t prev_state) |
| 718 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 719 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 720 | if (!fi->proc.parent) { |
| 721 | LOGPFSML(fi, LOGL_ERROR, "No parent FSM\n"); |
| 722 | return; |
| 723 | } |
| 724 | osmo_fsm_inst_dispatch(fi->proc.parent, |
| 725 | (lfp->result == VLR_FSM_RESULT_SUCCESS) |
| 726 | ? lfp->parent_event_success |
| 727 | : lfp->parent_event_failure, |
| 728 | lfp->parent_event_data); |
| 729 | } |
| 730 | |
| 731 | static void _lu_fsm_done(struct osmo_fsm_inst *fi, |
| 732 | enum vlr_fsm_result result) |
| 733 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 734 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 735 | lfp->result = result; |
| 736 | osmo_fsm_inst_state_chg(fi, VLR_ULA_S_DONE, 0, 0); |
| 737 | } |
| 738 | |
| 739 | static void lu_fsm_success(struct osmo_fsm_inst *fi) |
| 740 | { |
| 741 | _lu_fsm_done(fi, VLR_FSM_RESULT_SUCCESS); |
| 742 | } |
| 743 | |
| 744 | static void lu_fsm_failure(struct osmo_fsm_inst *fi, uint8_t rej_cause) |
| 745 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 746 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 747 | if (rej_cause) |
| 748 | lfp->vlr->ops.tx_lu_rej(lfp->msc_conn_ref, rej_cause); |
| 749 | _lu_fsm_done(fi, VLR_FSM_RESULT_FAILURE); |
| 750 | } |
| 751 | |
| 752 | static void vlr_loc_upd_start_lu_compl_fsm(struct osmo_fsm_inst *fi) |
| 753 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 754 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 755 | lfp->lu_compl_vlr_fsm = |
| 756 | lu_compl_vlr_proc_alloc(fi, lfp->vsub, lfp->msc_conn_ref, |
| 757 | VLR_ULA_E_LU_COMPL_SUCCESS, |
| 758 | VLR_ULA_E_LU_COMPL_FAILURE, |
| 759 | lfp->assign_tmsi); |
| 760 | |
| 761 | osmo_fsm_inst_dispatch(lfp->lu_compl_vlr_fsm, LU_COMPL_VLR_E_START, NULL); |
| 762 | } |
| 763 | |
| 764 | static void lu_fsm_discard_lu_compl_fsm(struct osmo_fsm_inst *fi) |
| 765 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 766 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 767 | if (!lfp->lu_compl_vlr_fsm) |
| 768 | return; |
| 769 | osmo_fsm_inst_term(lfp->lu_compl_vlr_fsm, OSMO_FSM_TERM_PARENT, NULL); |
| 770 | } |
| 771 | |
| 772 | /* 4.1.2.1 Node 4 */ |
| 773 | static void vlr_loc_upd_node_4(struct osmo_fsm_inst *fi) |
| 774 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 775 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 776 | struct vlr_subscr *vsub = lfp->vsub; |
| 777 | bool hlr_unknown = false; |
| 778 | |
| 779 | LOGPFSM(fi, "%s()\n", __func__); |
| 780 | |
| 781 | if (hlr_unknown) { |
| 782 | /* FIXME: Delete subscriber record */ |
| 783 | /* LU REJ: Roaming not allowed */ |
| 784 | lu_fsm_failure(fi, GSM48_REJECT_ROAMING_NOT_ALLOWED); |
| 785 | } else { |
| 786 | /* Update_HLR_VLR */ |
| 787 | osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_HLR_UPD, |
| 788 | LU_TIMEOUT_LONG, 0); |
| 789 | lfp->upd_hlr_vlr_fsm = |
| 790 | upd_hlr_vlr_proc_start(fi, vsub, VLR_ULA_E_UPD_HLR_COMPL); |
| 791 | } |
| 792 | } |
| 793 | |
| 794 | /* 4.1.2.1 Node B */ |
| 795 | static void vlr_loc_upd_node_b(struct osmo_fsm_inst *fi) |
| 796 | { |
| 797 | LOGPFSM(fi, "%s()\n", __func__); |
| 798 | |
Neels Hofmeyr | ef9126c | 2017-07-18 15:38:39 +0200 | [diff] [blame] | 799 | /* OsmoHLR does not support PgA, neither stores the IMEISV, so we have no need to update the HLR |
| 800 | * with either. TODO: depend on actual HLR configuration. See 3GPP TS 23.012 Release 14, process |
| 801 | * Update_Location_Area_VLR (ULA_VLR2). */ |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 802 | if (0) { /* IMEISV or PgA to send */ |
| 803 | vlr_loc_upd_node_4(fi); |
| 804 | } else { |
| 805 | /* Location_Update_Completion */ |
| 806 | osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_LU_COMPL, |
| 807 | LU_TIMEOUT_LONG, 0); |
| 808 | vlr_loc_upd_start_lu_compl_fsm(fi); |
| 809 | } |
| 810 | } |
| 811 | |
| 812 | /* Non-standard: after Ciphering Mode Complete (or no ciph required) */ |
| 813 | static void vlr_loc_upd_post_ciph(struct osmo_fsm_inst *fi) |
| 814 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 815 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 816 | struct vlr_subscr *vsub = lfp->vsub; |
| 817 | |
| 818 | LOGPFSM(fi, "%s()\n", __func__); |
| 819 | |
| 820 | OSMO_ASSERT(vsub); |
| 821 | |
Neels Hofmeyr | 84da6b1 | 2016-05-20 21:59:55 +0200 | [diff] [blame] | 822 | if (lfp->is_utran) { |
| 823 | int rc; |
| 824 | rc = lfp->vlr->ops.tx_common_id(lfp->msc_conn_ref); |
| 825 | if (rc) |
| 826 | LOGPFSML(fi, LOGL_ERROR, |
| 827 | "Error while sending Common ID (%d)\n", rc); |
| 828 | } |
| 829 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 830 | vsub->conf_by_radio_contact_ind = true; |
| 831 | /* Update LAI */ |
| 832 | vsub->cgi.lai = lfp->new_lai; |
| 833 | vsub->dormant_ind = false; |
| 834 | vsub->cancel_loc_rx = false; |
| 835 | if (hlr_update_needed(vsub)) { |
| 836 | vlr_loc_upd_node_4(fi); |
| 837 | } else { |
| 838 | /* TODO: ADD Support */ |
| 839 | /* TODO: Node A: PgA Support */ |
| 840 | vlr_loc_upd_node_b(fi); |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | /* 4.1.2.1 after Authentication successful (or no auth rqd) */ |
| 845 | static void vlr_loc_upd_post_auth(struct osmo_fsm_inst *fi) |
| 846 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 847 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 848 | struct vlr_subscr *vsub = lfp->vsub; |
Neels Hofmeyr | 7795a19 | 2018-03-10 00:26:36 +0100 | [diff] [blame] | 849 | bool umts_aka; |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 850 | |
| 851 | LOGPFSM(fi, "%s()\n", __func__); |
| 852 | |
| 853 | OSMO_ASSERT(vsub); |
| 854 | |
| 855 | if (!is_ciph_required(lfp)) { |
| 856 | vlr_loc_upd_post_ciph(fi); |
| 857 | return; |
| 858 | } |
| 859 | |
Neels Hofmeyr | 2ef2da5 | 2017-12-18 01:23:42 +0100 | [diff] [blame] | 860 | if (!vsub->last_tuple) { |
| 861 | LOGPFSML(fi, LOGL_ERROR, "No auth tuple available\n"); |
Neels Hofmeyr | d2278ec | 2018-03-02 02:44:05 +0100 | [diff] [blame] | 862 | lu_fsm_failure(fi, GSM48_REJECT_NETWORK_FAILURE); |
Neels Hofmeyr | 2ef2da5 | 2017-12-18 01:23:42 +0100 | [diff] [blame] | 863 | return; |
| 864 | } |
| 865 | |
Neels Hofmeyr | 7795a19 | 2018-03-10 00:26:36 +0100 | [diff] [blame] | 866 | switch (vsub->sec_ctx) { |
| 867 | case VLR_SEC_CTX_GSM: |
| 868 | umts_aka = false; |
| 869 | break; |
| 870 | case VLR_SEC_CTX_UMTS: |
| 871 | umts_aka = true; |
| 872 | break; |
| 873 | default: |
| 874 | LOGPFSML(fi, LOGL_ERROR, "Cannot start ciphering, security context is not established\n"); |
| 875 | lu_fsm_failure(fi, GSM48_REJECT_NETWORK_FAILURE); |
| 876 | return; |
| 877 | } |
| 878 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 879 | if (vlr_set_ciph_mode(vsub->vlr, fi, lfp->msc_conn_ref, |
| 880 | lfp->ciphering_required, |
Neels Hofmeyr | 7795a19 | 2018-03-10 00:26:36 +0100 | [diff] [blame] | 881 | umts_aka, |
Neels Hofmeyr | 54a706c | 2017-07-18 15:39:27 +0200 | [diff] [blame] | 882 | vsub->vlr->cfg.retrieve_imeisv_ciphered)) { |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 883 | LOGPFSML(fi, LOGL_ERROR, |
| 884 | "Failed to send Ciphering Mode Command\n"); |
Neels Hofmeyr | d2278ec | 2018-03-02 02:44:05 +0100 | [diff] [blame] | 885 | lu_fsm_failure(fi, GSM48_REJECT_NETWORK_FAILURE); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 886 | return; |
| 887 | } |
| 888 | |
| 889 | osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_CIPH, LU_TIMEOUT_LONG, 0); |
| 890 | } |
| 891 | |
| 892 | static void vlr_loc_upd_node1(struct osmo_fsm_inst *fi) |
| 893 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 894 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 895 | struct vlr_subscr *vsub = lfp->vsub; |
| 896 | |
| 897 | LOGPFSM(fi, "%s()\n", __func__); |
| 898 | |
| 899 | OSMO_ASSERT(vsub); |
| 900 | |
| 901 | if (is_auth_required(lfp)) { |
| 902 | /* Authenticate_VLR */ |
| 903 | osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_AUTH, |
| 904 | LU_TIMEOUT_LONG, 0); |
| 905 | vsub->auth_fsm = auth_fsm_start(lfp->vsub, fi->log_level, |
| 906 | fi, VLR_ULA_E_AUTH_RES, |
| 907 | lfp->is_r99, |
| 908 | lfp->is_utran); |
| 909 | } else { |
| 910 | /* no need for authentication */ |
| 911 | vlr_loc_upd_post_auth(fi); |
| 912 | } |
| 913 | } |
| 914 | |
| 915 | static void vlr_loc_upd_want_imsi(struct osmo_fsm_inst *fi) |
| 916 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 917 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 918 | struct vlr_instance *vlr = lfp->vlr; |
| 919 | |
| 920 | LOGPFSM(fi, "%s()\n", __func__); |
| 921 | |
| 922 | OSMO_ASSERT(lfp->vsub); |
| 923 | |
| 924 | /* Obtain_IMSI_VLR */ |
| 925 | osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_IMSI, |
| 926 | vlr_timer(vlr, 3270), 3270); |
| 927 | vlr->ops.tx_id_req(lfp->msc_conn_ref, GSM_MI_TYPE_IMSI); |
| 928 | /* will continue at vlr_loc_upd_node1() once IMSI arrives */ |
| 929 | } |
| 930 | |
| 931 | static int assoc_lfp_with_sub(struct osmo_fsm_inst *fi, struct vlr_subscr *vsub) |
| 932 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 933 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 934 | struct vlr_instance *vlr = lfp->vlr; |
| 935 | |
| 936 | if (vsub->lu_fsm) { |
| 937 | LOGPFSML(fi, LOGL_ERROR, |
| 938 | "A Location Updating process is already pending for" |
| 939 | " this subscriber. Aborting.\n"); |
| 940 | /* Also get rid of the other pending LU attempt? */ |
| 941 | /*lu_fsm_failure(vsub->lu_fsm, GSM48_REJECT_CONGESTION);*/ |
| 942 | lu_fsm_failure(fi, GSM48_REJECT_CONGESTION); |
| 943 | return -EINVAL; |
| 944 | } |
| 945 | vsub->lu_fsm = fi; |
| 946 | vsub->msc_conn_ref = lfp->msc_conn_ref; |
| 947 | /* FIXME: send new LAC to HLR? */ |
| 948 | vsub->lac = lfp->new_lai.lac; |
| 949 | lfp->vsub = vsub; |
| 950 | /* Tell MSC to associate this subscriber with the given |
| 951 | * connection */ |
| 952 | vlr->ops.subscr_assoc(lfp->msc_conn_ref, lfp->vsub); |
| 953 | return 0; |
| 954 | } |
| 955 | |
Neels Hofmeyr | 54a706c | 2017-07-18 15:39:27 +0200 | [diff] [blame] | 956 | static int _lu_fsm_associate_vsub(struct osmo_fsm_inst *fi) |
| 957 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 958 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Neels Hofmeyr | 54a706c | 2017-07-18 15:39:27 +0200 | [diff] [blame] | 959 | struct vlr_instance *vlr = lfp->vlr; |
| 960 | struct vlr_subscr *vsub = NULL; |
| 961 | |
| 962 | if (!lfp->imsi[0]) { |
| 963 | /* TMSI was used */ |
| 964 | lfp->lu_by_tmsi = true; |
| 965 | /* TMSI clash: if a different subscriber already has this TMSI, |
| 966 | * we will find that other subscriber in the VLR. So the IMSIs |
| 967 | * would mismatch, but we don't know about it. Theoretically, |
| 968 | * an authentication process would thwart any attempt to use |
| 969 | * someone else's TMSI. |
| 970 | * TODO: Otherwise we can ask for the IMSI and verify that it |
| 971 | * matches the IMSI on record. */ |
| 972 | vsub = vlr_subscr_find_or_create_by_tmsi(vlr, lfp->tmsi, NULL); |
| 973 | |
| 974 | if (!vsub) { |
| 975 | LOGPFSML(fi, LOGL_ERROR, "VLR subscriber allocation failed\n"); |
| 976 | lu_fsm_failure(fi, GSM48_REJECT_SRV_OPT_TMP_OUT_OF_ORDER); |
| 977 | return -1; |
| 978 | } |
| 979 | |
| 980 | vsub->sub_dataconf_by_hlr_ind = false; |
| 981 | if (assoc_lfp_with_sub(fi, vsub)) { |
| 982 | vlr_subscr_put(vsub); |
| 983 | return -1; /* error, fsm failure invoked in assoc_lfp_with_sub() */ |
| 984 | } |
| 985 | vlr_subscr_put(vsub); |
| 986 | } else { |
| 987 | /* IMSI was used */ |
| 988 | vsub = vlr_subscr_find_or_create_by_imsi(vlr, lfp->imsi, NULL); |
| 989 | |
| 990 | if (!vsub) { |
| 991 | LOGPFSML(fi, LOGL_ERROR, "VLR subscriber allocation failed\n"); |
| 992 | lu_fsm_failure(fi, GSM48_REJECT_SRV_OPT_TMP_OUT_OF_ORDER); |
| 993 | vlr_subscr_put(vsub); |
| 994 | return -1; |
| 995 | } |
| 996 | |
| 997 | vsub->sub_dataconf_by_hlr_ind = false; |
| 998 | if (assoc_lfp_with_sub(fi, vsub)) { |
| 999 | vlr_subscr_put(vsub); |
| 1000 | return -1; /* error, fsm failure invoked in assoc_lfp_with_sub() */ |
| 1001 | } |
| 1002 | vlr_subscr_put(vsub); |
| 1003 | } |
| 1004 | return 0; |
| 1005 | } |
| 1006 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1007 | /* 4.1.2.1: Subscriber (via MSC/SGSN) requests location update */ |
| 1008 | static void _start_lu_main(struct osmo_fsm_inst *fi) |
| 1009 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 1010 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1011 | struct vlr_instance *vlr = lfp->vlr; |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1012 | |
| 1013 | /* TODO: PUESBINE related handling */ |
| 1014 | |
| 1015 | /* Is previous LAI in this VLR? */ |
| 1016 | if (!lai_in_this_vlr(vlr, &lfp->old_lai)) { |
| 1017 | #if 0 |
| 1018 | /* FIXME: check previous VLR, (3) */ |
| 1019 | osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_PVLR, |
| 1020 | LU_TIMEOUT_LONG, 0); |
| 1021 | return; |
| 1022 | #endif |
| 1023 | LOGPFSML(fi, LOGL_NOTICE, "LAI change from %s," |
| 1024 | " but checking previous VLR not implemented\n", |
Neels Hofmeyr | 379d579 | 2018-02-22 04:04:54 +0100 | [diff] [blame] | 1025 | osmo_lai_name(&lfp->old_lai)); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1026 | } |
| 1027 | |
Neels Hofmeyr | 54a706c | 2017-07-18 15:39:27 +0200 | [diff] [blame] | 1028 | /* If this is a TMSI based LU, we may not have the IMSI. Make sure that |
| 1029 | * we know the IMSI, either on record, or request it. */ |
| 1030 | if (!lfp->vsub->imsi[0]) |
| 1031 | vlr_loc_upd_want_imsi(fi); |
| 1032 | else |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1033 | vlr_loc_upd_node1(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1034 | } |
| 1035 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1036 | static void lu_fsm_idle(struct osmo_fsm_inst *fi, uint32_t event, |
| 1037 | void *data) |
| 1038 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 1039 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1040 | struct vlr_instance *vlr = lfp->vlr; |
| 1041 | |
| 1042 | OSMO_ASSERT(event == VLR_ULA_E_UPDATE_LA); |
| 1043 | |
Neels Hofmeyr | 54a706c | 2017-07-18 15:39:27 +0200 | [diff] [blame] | 1044 | if (_lu_fsm_associate_vsub(fi)) |
| 1045 | return; /* error. FSM already terminated. */ |
| 1046 | |
| 1047 | OSMO_ASSERT(lfp->vsub); |
| 1048 | |
| 1049 | /* See 3GPP TS 23.012, procedure Retrieve_IMEISV_If_Required */ |
| 1050 | if ((!vlr->cfg.retrieve_imeisv_early) |
| 1051 | || (lfp->type == VLR_LU_TYPE_PERIODIC && lfp->vsub->imeisv[0])) { |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1052 | /* R_IMEISV_IR1 passed */ |
| 1053 | _start_lu_main(fi); |
| 1054 | } else { |
| 1055 | vlr->ops.tx_id_req(lfp->msc_conn_ref, GSM_MI_TYPE_IMEISV); |
| 1056 | osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_IMEISV, |
| 1057 | vlr_timer(vlr, 3270), 3270); |
| 1058 | } |
| 1059 | } |
| 1060 | |
| 1061 | static void lu_fsm_wait_imeisv(struct osmo_fsm_inst *fi, uint32_t event, |
| 1062 | void *data) |
| 1063 | { |
| 1064 | switch (event) { |
| 1065 | case VLR_ULA_E_ID_IMEISV: |
Neels Hofmeyr | 54a706c | 2017-07-18 15:39:27 +0200 | [diff] [blame] | 1066 | /* IMEISV was copied in vlr_subscr_rx_id_resp(), and that's |
| 1067 | * where we received this event from. */ |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1068 | _start_lu_main(fi); |
| 1069 | break; |
| 1070 | default: |
| 1071 | LOGPFSML(fi, LOGL_ERROR, "event without effect: %s\n", |
| 1072 | osmo_fsm_event_name(fi->fsm, event)); |
| 1073 | break; |
| 1074 | } |
| 1075 | } |
| 1076 | |
| 1077 | /* Wait for response from Send_Identification to PVLR */ |
| 1078 | static void lu_fsm_wait_pvlr(struct osmo_fsm_inst *fi, uint32_t event, |
| 1079 | void *data) |
| 1080 | { |
| 1081 | switch (event) { |
| 1082 | case VLR_ULA_E_SEND_ID_ACK: |
| 1083 | vlr_loc_upd_node1(fi); |
| 1084 | break; |
| 1085 | case VLR_ULA_E_SEND_ID_NACK: |
| 1086 | vlr_loc_upd_want_imsi(fi); |
| 1087 | break; |
| 1088 | default: |
| 1089 | LOGPFSML(fi, LOGL_ERROR, "event without effect: %s\n", |
| 1090 | osmo_fsm_event_name(fi->fsm, event)); |
| 1091 | break; |
| 1092 | } |
| 1093 | } |
| 1094 | |
| 1095 | /* Wait for result of Authenticate_VLR procedure */ |
| 1096 | static void lu_fsm_wait_auth(struct osmo_fsm_inst *fi, uint32_t event, |
| 1097 | void *data) |
| 1098 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 1099 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1100 | enum vlr_auth_fsm_result *res = data; |
| 1101 | uint8_t rej_cause = 0; |
| 1102 | |
| 1103 | OSMO_ASSERT(event == VLR_ULA_E_AUTH_RES); |
| 1104 | |
| 1105 | lfp->upd_hlr_vlr_fsm = NULL; |
| 1106 | |
| 1107 | if (res) { |
| 1108 | switch (*res) { |
| 1109 | case VLR_AUTH_RES_PASSED: |
| 1110 | /* Result == Pass */ |
| 1111 | vlr_loc_upd_post_auth(fi); |
| 1112 | return; |
| 1113 | case VLR_AUTH_RES_ABORTED: |
| 1114 | /* go to Idle with no response */ |
| 1115 | rej_cause = 0; |
| 1116 | break; |
| 1117 | case VLR_AUTH_RES_UNKNOWN_SUBSCR: |
| 1118 | /* FIXME: delete subscribe record */ |
| 1119 | rej_cause = GSM48_REJECT_IMSI_UNKNOWN_IN_HLR; |
| 1120 | break; |
| 1121 | case VLR_AUTH_RES_AUTH_FAILED: |
| 1122 | /* cause = illegal subscriber */ |
| 1123 | rej_cause = GSM48_REJECT_ILLEGAL_MS; |
| 1124 | break; |
| 1125 | case VLR_AUTH_RES_PROC_ERR: |
| 1126 | /* cause = system failure */ |
| 1127 | rej_cause = GSM48_REJECT_NETWORK_FAILURE; |
| 1128 | break; |
| 1129 | default: |
| 1130 | LOGPFSML(fi, LOGL_ERROR, "event without effect: %s\n", |
| 1131 | osmo_fsm_event_name(fi->fsm, event)); |
| 1132 | break; |
| 1133 | } |
| 1134 | } else |
| 1135 | rej_cause = GSM48_REJECT_NETWORK_FAILURE; |
| 1136 | |
| 1137 | lu_fsm_failure(fi, rej_cause); |
| 1138 | } |
| 1139 | |
| 1140 | static void lu_fsm_wait_ciph(struct osmo_fsm_inst *fi, uint32_t event, |
| 1141 | void *data) |
| 1142 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 1143 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1144 | struct vlr_subscr *vsub = lfp->vsub; |
| 1145 | struct vlr_ciph_result res = { .cause = VLR_CIPH_REJECT }; |
| 1146 | |
| 1147 | OSMO_ASSERT(event == VLR_ULA_E_CIPH_RES); |
| 1148 | |
| 1149 | if (!data) |
| 1150 | LOGPFSML(fi, LOGL_ERROR, "invalid ciphering result: NULL\n"); |
| 1151 | else |
| 1152 | res = *(struct vlr_ciph_result*)data; |
| 1153 | |
| 1154 | switch (res.cause) { |
| 1155 | case VLR_CIPH_COMPL: |
| 1156 | break; |
| 1157 | case VLR_CIPH_REJECT: |
| 1158 | LOGPFSM(fi, "ciphering rejected\n"); |
| 1159 | lu_fsm_failure(fi, GSM48_REJECT_INVALID_MANDANTORY_INF); |
| 1160 | return; |
| 1161 | default: |
| 1162 | LOGPFSML(fi, LOGL_ERROR, "invalid ciphering result: %d\n", |
| 1163 | res.cause); |
| 1164 | lu_fsm_failure(fi, GSM48_REJECT_INVALID_MANDANTORY_INF); |
| 1165 | return; |
| 1166 | } |
| 1167 | |
Neels Hofmeyr | fa10eda | 2018-03-13 01:22:01 +0100 | [diff] [blame] | 1168 | if (*res.imeisv) { |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1169 | LOGPFSM(fi, "got IMEISV: %s\n", res.imeisv); |
| 1170 | vlr_subscr_set_imeisv(vsub, res.imeisv); |
| 1171 | } |
| 1172 | vlr_loc_upd_post_ciph(fi); |
| 1173 | } |
| 1174 | |
| 1175 | static void lu_fsm_wait_imsi(struct osmo_fsm_inst *fi, uint32_t event, |
| 1176 | void *data) |
| 1177 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 1178 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1179 | struct vlr_subscr *vsub = lfp->vsub; |
| 1180 | char *mi_string = data; |
| 1181 | |
| 1182 | switch (event) { |
| 1183 | case VLR_ULA_E_ID_IMSI: |
| 1184 | vlr_subscr_set_imsi(vsub, mi_string); |
| 1185 | vlr_loc_upd_node1(fi); |
| 1186 | break; |
| 1187 | default: |
| 1188 | LOGPFSML(fi, LOGL_ERROR, "event without effect: %s\n", |
| 1189 | osmo_fsm_event_name(fi->fsm, event)); |
| 1190 | break; |
| 1191 | } |
| 1192 | } |
| 1193 | |
| 1194 | /* At the end of Update_HLR_VLR */ |
| 1195 | static void lu_fsm_wait_hlr_ul_res(struct osmo_fsm_inst *fi, uint32_t event, |
| 1196 | void *data) |
| 1197 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 1198 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1199 | |
| 1200 | switch (event) { |
| 1201 | case VLR_ULA_E_HLR_LU_RES: |
| 1202 | /* pass-through this event to Update_HLR_VLR */ |
| 1203 | if (data == NULL) |
| 1204 | osmo_fsm_inst_dispatch(lfp->upd_hlr_vlr_fsm, UPD_HLR_VLR_E_UPD_LOC_ACK, NULL); |
| 1205 | else |
| 1206 | osmo_fsm_inst_dispatch(lfp->upd_hlr_vlr_fsm, UPD_HLR_VLR_E_UPD_LOC_NACK, data); |
| 1207 | break; |
| 1208 | case VLR_ULA_E_UPD_HLR_COMPL: |
| 1209 | if (data == NULL) { |
| 1210 | /* successful case */ |
| 1211 | osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_LU_COMPL, |
| 1212 | LU_TIMEOUT_LONG, 0); |
| 1213 | vlr_loc_upd_start_lu_compl_fsm(fi); |
| 1214 | /* continue in MSC ?!? */ |
| 1215 | } else { |
| 1216 | /* unsuccessful case */ |
| 1217 | enum gsm48_gmm_cause cause = |
| 1218 | *(enum gsm48_gmm_cause *)data; |
Neels Hofmeyr | ef9126c | 2017-07-18 15:38:39 +0200 | [diff] [blame] | 1219 | /* Ignoring standalone mode for now. */ |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1220 | if (0 /* procedure_error && vlr->cfg.standalone_mode */) { |
| 1221 | osmo_fsm_inst_state_chg(fi, |
| 1222 | VLR_ULA_S_WAIT_LU_COMPL_STANDALONE, |
| 1223 | LU_TIMEOUT_LONG, 0); |
| 1224 | vlr_loc_upd_start_lu_compl_fsm(fi); |
| 1225 | } else { |
| 1226 | lu_fsm_failure(fi, cause); |
| 1227 | } |
| 1228 | } |
| 1229 | break; |
| 1230 | default: |
| 1231 | LOGPFSML(fi, LOGL_ERROR, "event without effect: %s\n", |
| 1232 | osmo_fsm_event_name(fi->fsm, event)); |
| 1233 | break; |
| 1234 | } |
| 1235 | } |
| 1236 | |
| 1237 | /* Wait for end of Location_Update_Completion_VLR */ |
| 1238 | static void lu_fsm_wait_lu_compl(struct osmo_fsm_inst *fi, uint32_t event, |
| 1239 | void *data) |
| 1240 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 1241 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1242 | uint8_t cause; |
| 1243 | |
| 1244 | switch (event) { |
| 1245 | case VLR_ULA_E_NEW_TMSI_ACK: |
| 1246 | osmo_fsm_inst_dispatch(lfp->lu_compl_vlr_fsm, |
| 1247 | LU_COMPL_VLR_E_NEW_TMSI_ACK, NULL); |
| 1248 | break; |
| 1249 | case VLR_ULA_E_ID_IMEI: |
| 1250 | osmo_fsm_inst_dispatch(lfp->lu_compl_vlr_fsm, |
| 1251 | LU_COMPL_VLR_E_IMEI_CHECK_ACK, NULL); |
| 1252 | break; |
| 1253 | case VLR_ULA_E_LU_COMPL_SUCCESS: |
| 1254 | lu_fsm_discard_lu_compl_fsm(fi); |
| 1255 | |
| 1256 | /* Update Register */ |
| 1257 | /* TODO: Set_Notification_Type 23.078 */ |
| 1258 | /* TODO: Notify_gsmSCF 23.078 */ |
| 1259 | /* TODO: Authenticated Radio Contact Established -> ARC */ |
Stefan Sperling | 3a74128 | 2018-03-13 21:11:49 +0100 | [diff] [blame] | 1260 | |
| 1261 | if (lfp->type == VLR_LU_TYPE_IMSI_ATTACH) |
| 1262 | lfp->vlr->ops.tx_mm_info(lfp->msc_conn_ref); |
| 1263 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1264 | lu_fsm_success(fi); |
| 1265 | break; |
| 1266 | case VLR_ULA_E_LU_COMPL_FAILURE: |
| 1267 | cause = GSM48_REJECT_NETWORK_FAILURE; |
| 1268 | if (data) |
| 1269 | cause = *(uint8_t*)data; |
| 1270 | lu_fsm_discard_lu_compl_fsm(fi); |
| 1271 | lu_fsm_failure(fi, cause); |
| 1272 | break; |
| 1273 | default: |
| 1274 | LOGPFSML(fi, LOGL_ERROR, "event without effect: %s\n", |
| 1275 | osmo_fsm_event_name(fi->fsm, event)); |
| 1276 | break; |
| 1277 | } |
| 1278 | } |
| 1279 | |
| 1280 | /* Wait for end of Location_Update_Completion_VLR (standalone case) */ |
| 1281 | static void lu_fsm_wait_lu_compl_standalone(struct osmo_fsm_inst *fi, |
| 1282 | uint32_t event, void *data) |
| 1283 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 1284 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1285 | struct vlr_subscr *vsub = lfp->vsub; |
| 1286 | uint8_t cause; |
| 1287 | |
| 1288 | switch (event) { |
| 1289 | case VLR_ULA_E_NEW_TMSI_ACK: |
| 1290 | osmo_fsm_inst_dispatch(lfp->lu_compl_vlr_fsm, |
| 1291 | LU_COMPL_VLR_E_NEW_TMSI_ACK, NULL); |
| 1292 | break; |
| 1293 | case VLR_ULA_E_LU_COMPL_SUCCESS: |
| 1294 | lu_fsm_discard_lu_compl_fsm(fi); |
| 1295 | vsub->sub_dataconf_by_hlr_ind = false; |
| 1296 | lu_fsm_success(fi); |
| 1297 | break; |
| 1298 | case VLR_ULA_E_LU_COMPL_FAILURE: |
| 1299 | vsub->sub_dataconf_by_hlr_ind = false; |
| 1300 | cause = GSM48_REJECT_NETWORK_FAILURE; |
| 1301 | if (data) |
| 1302 | cause = *(uint8_t*)data; |
| 1303 | lu_fsm_discard_lu_compl_fsm(fi); |
| 1304 | lu_fsm_failure(fi, cause); |
| 1305 | break; |
| 1306 | default: |
| 1307 | LOGPFSML(fi, LOGL_ERROR, "event without effect: %s\n", |
| 1308 | osmo_fsm_event_name(fi->fsm, event)); |
| 1309 | break; |
| 1310 | } |
| 1311 | } |
| 1312 | |
| 1313 | static const struct osmo_fsm_state vlr_lu_fsm_states[] = { |
| 1314 | [VLR_ULA_S_IDLE] = { |
| 1315 | .in_event_mask = S(VLR_ULA_E_UPDATE_LA), |
| 1316 | .out_state_mask = S(VLR_ULA_S_WAIT_IMEISV) | |
| 1317 | S(VLR_ULA_S_WAIT_PVLR) | |
| 1318 | S(VLR_ULA_S_WAIT_IMSI) | |
| 1319 | S(VLR_ULA_S_WAIT_AUTH) | |
| 1320 | S(VLR_ULA_S_WAIT_HLR_UPD) | |
| 1321 | S(VLR_ULA_S_DONE), |
| 1322 | .name = OSMO_STRINGIFY(VLR_ULA_S_IDLE), |
| 1323 | .action = lu_fsm_idle, |
| 1324 | }, |
| 1325 | [VLR_ULA_S_WAIT_IMEISV] = { |
| 1326 | .in_event_mask = S(VLR_ULA_E_ID_IMEISV), |
| 1327 | .out_state_mask = S(VLR_ULA_S_WAIT_PVLR) | |
| 1328 | S(VLR_ULA_S_WAIT_IMSI) | |
Neels Hofmeyr | 54a706c | 2017-07-18 15:39:27 +0200 | [diff] [blame] | 1329 | S(VLR_ULA_S_WAIT_AUTH) | |
| 1330 | S(VLR_ULA_S_WAIT_HLR_UPD) | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1331 | S(VLR_ULA_S_DONE), |
| 1332 | .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_IMEISV), |
| 1333 | .action = lu_fsm_wait_imeisv, |
| 1334 | }, |
| 1335 | [VLR_ULA_S_WAIT_PVLR] = { |
| 1336 | .in_event_mask = S(VLR_ULA_E_SEND_ID_ACK) | |
| 1337 | S(VLR_ULA_E_SEND_ID_NACK), |
| 1338 | .out_state_mask = S(VLR_ULA_S_WAIT_IMSI) | |
| 1339 | S(VLR_ULA_S_WAIT_AUTH) | |
| 1340 | S(VLR_ULA_S_DONE), |
| 1341 | .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_PVLR), |
| 1342 | .action = lu_fsm_wait_pvlr, |
| 1343 | }, |
| 1344 | [VLR_ULA_S_WAIT_AUTH] = { |
| 1345 | .in_event_mask = S(VLR_ULA_E_AUTH_RES), |
| 1346 | .out_state_mask = S(VLR_ULA_S_WAIT_CIPH) | |
| 1347 | S(VLR_ULA_S_WAIT_LU_COMPL) | |
| 1348 | S(VLR_ULA_S_WAIT_HLR_UPD) | |
| 1349 | S(VLR_ULA_S_DONE), |
| 1350 | .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_AUTH), |
| 1351 | .action = lu_fsm_wait_auth, |
| 1352 | }, |
| 1353 | [VLR_ULA_S_WAIT_CIPH] = { |
| 1354 | .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_CIPH), |
| 1355 | .in_event_mask = S(VLR_ULA_E_CIPH_RES), |
| 1356 | .out_state_mask = S(VLR_ULA_S_WAIT_LU_COMPL) | |
| 1357 | S(VLR_ULA_S_WAIT_HLR_UPD) | |
| 1358 | S(VLR_ULA_S_DONE), |
| 1359 | .action = lu_fsm_wait_ciph, |
| 1360 | }, |
| 1361 | [VLR_ULA_S_WAIT_IMSI] = { |
| 1362 | .in_event_mask = S(VLR_ULA_E_ID_IMSI), |
| 1363 | .out_state_mask = S(VLR_ULA_S_WAIT_AUTH) | |
| 1364 | S(VLR_ULA_S_WAIT_HLR_UPD) | |
| 1365 | S(VLR_ULA_S_DONE), |
| 1366 | .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_IMSI), |
| 1367 | .action = lu_fsm_wait_imsi, |
| 1368 | }, |
| 1369 | [VLR_ULA_S_WAIT_HLR_UPD] = { |
| 1370 | .in_event_mask = S(VLR_ULA_E_HLR_LU_RES) | |
| 1371 | S(VLR_ULA_E_UPD_HLR_COMPL), |
| 1372 | .out_state_mask = S(VLR_ULA_S_WAIT_LU_COMPL) | |
| 1373 | S(VLR_ULA_S_WAIT_LU_COMPL_STANDALONE) | |
| 1374 | S(VLR_ULA_S_DONE), |
| 1375 | .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_HLR_UPD), |
| 1376 | .action = lu_fsm_wait_hlr_ul_res, |
| 1377 | }, |
| 1378 | [VLR_ULA_S_WAIT_LU_COMPL] = { |
| 1379 | .in_event_mask = S(VLR_ULA_E_LU_COMPL_SUCCESS) | |
| 1380 | S(VLR_ULA_E_LU_COMPL_FAILURE) | |
| 1381 | S(VLR_ULA_E_NEW_TMSI_ACK) | |
| 1382 | S(VLR_ULA_E_ID_IMEI) | |
| 1383 | S(VLR_ULA_E_ID_IMEISV), |
| 1384 | .out_state_mask = S(VLR_ULA_S_DONE), |
| 1385 | .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_LU_COMPL), |
| 1386 | .action = lu_fsm_wait_lu_compl, |
| 1387 | }, |
| 1388 | [VLR_ULA_S_WAIT_LU_COMPL_STANDALONE] = { |
| 1389 | .in_event_mask = S(VLR_ULA_E_LU_COMPL_SUCCESS) | |
| 1390 | S(VLR_ULA_E_LU_COMPL_FAILURE) | |
| 1391 | S(VLR_ULA_E_NEW_TMSI_ACK), |
| 1392 | .out_state_mask = S(VLR_ULA_S_DONE), |
| 1393 | .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_LU_COMPL_STANDALONE), |
| 1394 | .action = lu_fsm_wait_lu_compl_standalone, |
| 1395 | }, |
| 1396 | [VLR_ULA_S_DONE] = { |
| 1397 | .name = OSMO_STRINGIFY(VLR_ULA_S_DONE), |
| 1398 | .onenter = lu_fsm_dispatch_result, |
| 1399 | }, |
| 1400 | }; |
| 1401 | |
| 1402 | static void fsm_lu_cleanup(struct osmo_fsm_inst *fi, enum osmo_fsm_term_cause cause) |
| 1403 | { |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 1404 | struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1405 | struct vlr_subscr *vsub = lfp->vsub; |
| 1406 | |
| 1407 | LOGPFSM(fi, "fsm_lu_cleanup called with cause %s\n", |
| 1408 | osmo_fsm_term_cause_name(cause)); |
| 1409 | if (vsub && vsub->lu_fsm == fi) |
| 1410 | vsub->lu_fsm = NULL; |
| 1411 | } |
| 1412 | |
| 1413 | static struct osmo_fsm vlr_lu_fsm = { |
| 1414 | .name = "vlr_lu_fsm", |
| 1415 | .states = vlr_lu_fsm_states, |
| 1416 | .num_states = ARRAY_SIZE(vlr_lu_fsm_states), |
| 1417 | .allstate_event_mask = 0, |
| 1418 | .allstate_action = NULL, |
| 1419 | .log_subsys = DVLR, |
| 1420 | .event_names = fsm_lu_event_names, |
| 1421 | .cleanup = fsm_lu_cleanup, |
| 1422 | }; |
| 1423 | |
Neels Hofmeyr | c5e0ace | 2018-03-02 03:12:22 +0100 | [diff] [blame] | 1424 | static inline struct lu_fsm_priv *lu_fsm_fi_priv(struct osmo_fsm_inst *fi) |
| 1425 | { |
| 1426 | OSMO_ASSERT(fi->fsm == &vlr_lu_fsm); |
| 1427 | return (struct lu_fsm_priv*)fi->priv; |
| 1428 | } |
| 1429 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1430 | struct osmo_fsm_inst * |
| 1431 | vlr_loc_update(struct osmo_fsm_inst *parent, |
| 1432 | uint32_t parent_event_success, |
| 1433 | uint32_t parent_event_failure, |
| 1434 | void *parent_event_data, |
| 1435 | struct vlr_instance *vlr, void *msc_conn_ref, |
| 1436 | enum vlr_lu_type type, uint32_t tmsi, const char *imsi, |
| 1437 | const struct osmo_location_area_id *old_lai, |
| 1438 | const struct osmo_location_area_id *new_lai, |
| 1439 | bool authentication_required, |
Harald Welte | 71c51df | 2017-12-23 18:51:48 +0100 | [diff] [blame] | 1440 | bool ciphering_required, |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1441 | bool is_r99, bool is_utran, |
| 1442 | bool assign_tmsi) |
| 1443 | { |
| 1444 | struct osmo_fsm_inst *fi; |
| 1445 | struct lu_fsm_priv *lfp; |
| 1446 | |
| 1447 | fi = osmo_fsm_inst_alloc_child(&vlr_lu_fsm, parent, parent_event_failure); |
| 1448 | if (!fi) |
| 1449 | return NULL; |
| 1450 | |
| 1451 | lfp = talloc_zero(fi, struct lu_fsm_priv); |
| 1452 | lfp->vlr = vlr; |
| 1453 | lfp->msc_conn_ref = msc_conn_ref; |
| 1454 | lfp->tmsi = tmsi; |
| 1455 | lfp->type = type; |
| 1456 | lfp->old_lai = *old_lai; |
| 1457 | lfp->new_lai = *new_lai; |
| 1458 | lfp->lu_by_tmsi = true; |
| 1459 | lfp->parent_event_success = parent_event_success; |
| 1460 | lfp->parent_event_failure = parent_event_failure; |
| 1461 | lfp->parent_event_data = parent_event_data; |
| 1462 | lfp->authentication_required = authentication_required; |
| 1463 | lfp->ciphering_required = ciphering_required; |
| 1464 | lfp->is_r99 = is_r99; |
| 1465 | lfp->is_utran = is_utran; |
| 1466 | lfp->assign_tmsi = assign_tmsi; |
| 1467 | if (imsi) { |
| 1468 | strncpy(lfp->imsi, imsi, sizeof(lfp->imsi)-1); |
| 1469 | lfp->imsi[sizeof(lfp->imsi)-1] = '\0'; |
| 1470 | lfp->lu_by_tmsi = false; |
| 1471 | } |
| 1472 | fi->priv = lfp; |
| 1473 | |
| 1474 | LOGPFSM(fi, "rev=%s net=%s%s%s\n", |
| 1475 | is_r99 ? "R99" : "GSM", |
| 1476 | is_utran ? "UTRAN" : "GERAN", |
| 1477 | (authentication_required || ciphering_required)? |
| 1478 | " Auth" : " (no Auth)", |
| 1479 | (authentication_required || ciphering_required)? |
| 1480 | (ciphering_required? "+Ciph" : " (no Ciph)") |
| 1481 | : ""); |
| 1482 | |
Neels Hofmeyr | 84da6b1 | 2016-05-20 21:59:55 +0200 | [diff] [blame] | 1483 | if (is_utran && !authentication_required) |
| 1484 | LOGPFSML(fi, LOGL_ERROR, |
| 1485 | "Authentication off on UTRAN network. Good luck.\n"); |
| 1486 | |
Harald Welte | b8b85a1 | 2016-06-17 00:06:42 +0200 | [diff] [blame] | 1487 | osmo_fsm_inst_dispatch(fi, VLR_ULA_E_UPDATE_LA, NULL); |
| 1488 | |
| 1489 | return fi; |
| 1490 | } |
| 1491 | |
| 1492 | /* Gracefully terminate an FSM created by vlr_loc_update() in case of external |
| 1493 | * timeout (i.e. from MSC). */ |
| 1494 | void vlr_loc_update_conn_timeout(struct osmo_fsm_inst *fi) |
| 1495 | { |
| 1496 | if (!fi || fi->state == VLR_ULA_S_DONE) |
| 1497 | return; |
| 1498 | LOGPFSM(fi, "Connection timed out\n"); |
| 1499 | lu_fsm_failure(fi, GSM48_REJECT_CONGESTION); |
| 1500 | } |
| 1501 | |
| 1502 | void vlr_lu_fsm_init(void) |
| 1503 | { |
| 1504 | osmo_fsm_register(&vlr_lu_fsm); |
| 1505 | osmo_fsm_register(&upd_hlr_vlr_fsm); |
| 1506 | osmo_fsm_register(&sub_pres_vlr_fsm); |
| 1507 | osmo_fsm_register(&lu_compl_vlr_fsm); |
| 1508 | } |