Neels Hofmeyr | b19b533 | 2020-08-25 13:34:04 +0200 | [diff] [blame] | 1 | /* Cell Broadcast Service Protocol (CBSP, 3GPP TS 48.049): Message encoding, decoding and reception */ |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2019 Harald Welte <laforge@gnumonks.org> |
| 4 | * |
| 5 | * All Rights Reserved |
| 6 | * |
| 7 | * SPDX-License-Identifier: GPL-2.0+ |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 21 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 22 | */ |
| 23 | |
| 24 | #include "config.h" |
| 25 | |
| 26 | #include <errno.h> |
| 27 | |
| 28 | #include <sys/types.h> |
| 29 | |
| 30 | #include <osmocom/core/linuxlist.h> |
| 31 | #include <osmocom/core/msgb.h> |
| 32 | |
| 33 | #include <osmocom/gsm/tlv.h> |
| 34 | #include <osmocom/gsm/cbsp.h> |
| 35 | #include <osmocom/gsm/gsm0808_utils.h> |
| 36 | |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 37 | const __thread char *osmo_cbsp_errstr; |
| 38 | |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 39 | struct msgb *osmo_cbsp_msgb_alloc(void *ctx, const char *name) |
| 40 | { |
| 41 | /* make the messages rather large as the cell lists can be long! */ |
| 42 | return msgb_alloc_headroom_c(ctx, 65535, 16, name); |
| 43 | } |
| 44 | |
| 45 | /*********************************************************************** |
| 46 | * IE Encoding |
| 47 | ***********************************************************************/ |
| 48 | |
| 49 | /* 8.2.6 Cell List */ |
| 50 | static void msgb_put_cbsp_cell_list(struct msgb *msg, const struct osmo_cbsp_cell_list *cl) |
| 51 | { |
| 52 | const struct osmo_cbsp_cell_ent *ent; |
| 53 | uint8_t *lenptr; |
| 54 | |
| 55 | /* put tag; reserve space for length; put discriminator */ |
| 56 | msgb_put_u8(msg, CBSP_IEI_CELL_LIST); |
| 57 | lenptr = msgb_put(msg, sizeof(uint16_t)); |
| 58 | msgb_put_u8(msg, cl->id_discr); |
| 59 | /* put list elements */ |
| 60 | llist_for_each_entry(ent, &cl->list, list) { |
| 61 | gsm0808_msgb_put_cell_id_u(msg, cl->id_discr, &ent->cell_id); |
| 62 | } |
| 63 | /* update IE length */ |
| 64 | osmo_store16be(msg->tail - (lenptr+2), lenptr); |
| 65 | } |
| 66 | |
| 67 | /* 8.2.11 Failure List (discriminator per entry) */ |
| 68 | static void msgb_put_cbsp_fail_list(struct msgb *msg, const struct llist_head *fl) |
| 69 | { |
| 70 | const struct osmo_cbsp_fail_ent *ent; |
| 71 | uint8_t *lenptr; |
| 72 | |
| 73 | /* put tag; reserve space for length; put discriminator */ |
| 74 | msgb_put_u8(msg, CBSP_IEI_FAILURE_LIST); |
| 75 | lenptr = msgb_put(msg, sizeof(uint16_t)); |
| 76 | /* put list elements */ |
| 77 | llist_for_each_entry(ent, fl, list) { |
| 78 | msgb_put_u8(msg, ent->id_discr); |
| 79 | gsm0808_msgb_put_cell_id_u(msg, ent->id_discr, &ent->cell_id); |
| 80 | msgb_put_u8(msg, ent->cause); |
| 81 | } |
| 82 | /* update IE length */ |
| 83 | osmo_store16be(msg->tail - (lenptr+2), lenptr); |
| 84 | } |
| 85 | |
| 86 | /* 8.2.12 Radio Resource Loading List */ |
| 87 | static void msgb_put_cbsp_loading_list(struct msgb *msg, const struct osmo_cbsp_loading_list *ll) |
| 88 | { |
| 89 | const struct osmo_cbsp_loading_ent *ent; |
| 90 | uint8_t *lenptr; |
| 91 | |
| 92 | /* put tag; reserve space for length; put discriminator */ |
| 93 | msgb_put_u8(msg, CBSP_IEI_RR_LOADING_LIST); |
| 94 | lenptr = msgb_put(msg, sizeof(uint16_t)); |
| 95 | msgb_put_u8(msg, ll->id_discr); |
| 96 | /* put list elements */ |
| 97 | llist_for_each_entry(ent, &ll->list, list) { |
| 98 | gsm0808_msgb_put_cell_id_u(msg, ll->id_discr, &ent->cell_id); |
| 99 | msgb_put_u8(msg, ent->load[0]); |
| 100 | msgb_put_u8(msg, ent->load[1]); |
| 101 | } |
| 102 | /* update IE length */ |
| 103 | osmo_store16be(msg->tail - (lenptr+2), lenptr); |
| 104 | } |
| 105 | |
| 106 | /* 8.2.10 Completed List */ |
| 107 | static void msgb_put_cbsp_num_compl_list(struct msgb *msg, const struct osmo_cbsp_num_compl_list *cl) |
| 108 | { |
| 109 | const struct osmo_cbsp_num_compl_ent *ent; |
| 110 | uint8_t *lenptr; |
| 111 | |
| 112 | /* put tag; reserve space for length; put discriminator */ |
| 113 | msgb_put_u8(msg, CBSP_IEI_NUM_BCAST_COMPL_LIST); |
| 114 | lenptr = msgb_put(msg, sizeof(uint16_t)); |
| 115 | msgb_put_u8(msg, cl->id_discr); |
| 116 | /* put list elements */ |
| 117 | llist_for_each_entry(ent, &cl->list, list) { |
| 118 | gsm0808_msgb_put_cell_id_u(msg, cl->id_discr, &ent->cell_id); |
| 119 | msgb_put_u16(msg, ent->num_compl); |
| 120 | msgb_put_u8(msg, ent->num_bcast_info); |
| 121 | } |
| 122 | /* update IE length */ |
| 123 | osmo_store16be(msg->tail - (lenptr+2), lenptr); |
| 124 | } |
| 125 | |
| 126 | static int encode_wperiod(uint32_t secs) |
| 127 | { |
| 128 | if (secs == 0xffffffff) |
| 129 | return 0; /* infinite */ |
| 130 | if (secs <= 10) |
| 131 | return secs; |
| 132 | if (secs <= 30) |
Harald Welte | fcbf347 | 2021-02-22 10:05:05 +0100 | [diff] [blame] | 133 | return 10 + (secs-10)/2; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 134 | if (secs <= 120) |
Harald Welte | fcbf347 | 2021-02-22 10:05:05 +0100 | [diff] [blame] | 135 | return 30 + (secs-30)/5; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 136 | if (secs <= 600) |
Harald Welte | fcbf347 | 2021-02-22 10:05:05 +0100 | [diff] [blame] | 137 | return 120 + (secs-120)/10; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 138 | if (secs <= 60*60) |
Harald Welte | fcbf347 | 2021-02-22 10:05:05 +0100 | [diff] [blame] | 139 | return 600 + (secs-600)/30; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 140 | osmo_cbsp_errstr = "warning period out of range"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 141 | return -1; |
| 142 | } |
| 143 | |
| 144 | /*********************************************************************** |
| 145 | * Message Encoding |
| 146 | ***********************************************************************/ |
| 147 | |
| 148 | /* 8.1.3.1 WRITE REPLACE */ |
| 149 | static int cbsp_enc_write_repl(struct msgb *msg, const struct osmo_cbsp_write_replace *in) |
| 150 | { |
| 151 | msgb_tv16_put(msg, CBSP_IEI_MSG_ID, in->msg_id); |
| 152 | msgb_tv16_put(msg, CBSP_IEI_NEW_SERIAL_NR, in->new_serial_nr); |
| 153 | if (in->old_serial_nr) |
| 154 | msgb_tv16_put(msg, CBSP_IEI_OLD_SERIAL_NR, *in->old_serial_nr); |
| 155 | msgb_put_cbsp_cell_list(msg, &in->cell_list); |
| 156 | if (in->is_cbs) { |
| 157 | int num_of_pages = llist_count(&in->u.cbs.msg_content); |
| 158 | struct osmo_cbsp_content *ce; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 159 | if (num_of_pages == 0 || num_of_pages > 15) { |
| 160 | osmo_cbsp_errstr = "invalid number of pages"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 161 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 162 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 163 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, in->u.cbs.channel_ind); |
| 164 | msgb_tv_put(msg, CBSP_IEI_CATEGORY, in->u.cbs.category); |
| 165 | msgb_tv16_put(msg, CBSP_IEI_REP_PERIOD, in->u.cbs.rep_period); |
| 166 | msgb_tv16_put(msg, CBSP_IEI_NUM_BCAST_REQ, in->u.cbs.num_bcast_req); |
| 167 | msgb_tv_put(msg, CBSP_IEI_NUM_OF_PAGES, num_of_pages); |
| 168 | msgb_tv_put(msg, CBSP_IEI_DCS, in->u.cbs.dcs); |
| 169 | llist_for_each_entry(ce, &in->u.cbs.msg_content, list) { |
| 170 | uint8_t *out; |
| 171 | /* cannot use msgb_tlv_put() as 'len' isn't actually the length of |
| 172 | * the data field */ |
| 173 | msgb_put_u8(msg, CBSP_IEI_MSG_CONTENT); |
| 174 | msgb_put_u8(msg, ce->user_len); |
| 175 | out = msgb_put(msg, sizeof(ce->data)); |
| 176 | memcpy(out, ce->data, sizeof(ce->data)); |
| 177 | } |
| 178 | } else { |
| 179 | int wperiod = encode_wperiod(in->u.emergency.warning_period); |
Harald Welte | 64b9407 | 2021-01-02 20:46:51 +0100 | [diff] [blame] | 180 | uint8_t *cur; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 181 | if (wperiod < 0) |
| 182 | return -EINVAL; |
| 183 | msgb_tv_put(msg, CBSP_IEI_EMERG_IND, in->u.emergency.indicator); |
| 184 | msgb_tv16_put(msg, CBSP_IEI_WARN_TYPE, in->u.emergency.warning_type); |
Harald Welte | 64b9407 | 2021-01-02 20:46:51 +0100 | [diff] [blame] | 185 | /* Tag + fixed length value! */ |
| 186 | msgb_put_u8(msg, CBSP_IEI_WARN_SEC_INFO); |
| 187 | cur = msgb_put(msg, sizeof(in->u.emergency.warning_sec_info)); |
| 188 | memcpy(cur, in->u.emergency.warning_sec_info, sizeof(in->u.emergency.warning_sec_info)); |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 189 | msgb_tv_put(msg, CBSP_IEI_WARNING_PERIOD, wperiod); |
| 190 | } |
| 191 | return 0; |
| 192 | } |
| 193 | |
| 194 | /* 8.1.3.2 WRITE REPLACE COMPLETE*/ |
| 195 | static int cbsp_enc_write_repl_compl(struct msgb *msg, const struct osmo_cbsp_write_replace_complete *in) |
| 196 | { |
| 197 | msgb_tv16_put(msg, CBSP_IEI_MSG_ID, in->msg_id); |
| 198 | msgb_tv16_put(msg, CBSP_IEI_NEW_SERIAL_NR, in->new_serial_nr); |
| 199 | if (in->old_serial_nr) |
| 200 | msgb_tv16_put(msg, CBSP_IEI_OLD_SERIAL_NR, *in->old_serial_nr); |
| 201 | |
| 202 | if (!llist_empty(&in->num_compl_list.list)) |
| 203 | msgb_put_cbsp_num_compl_list(msg, &in->num_compl_list); |
| 204 | if (!llist_empty(&in->cell_list.list)) |
| 205 | msgb_put_cbsp_cell_list(msg, &in->cell_list); |
| 206 | if (in->channel_ind) |
| 207 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, *in->channel_ind); |
| 208 | return 0; |
| 209 | } |
| 210 | |
| 211 | /* 8.1.3.3 WRITE REPLACE FAILURE */ |
| 212 | static int cbsp_enc_write_repl_fail(struct msgb *msg, const struct osmo_cbsp_write_replace_failure *in) |
| 213 | { |
| 214 | msgb_tv16_put(msg, CBSP_IEI_MSG_ID, in->msg_id); |
| 215 | msgb_tv16_put(msg, CBSP_IEI_NEW_SERIAL_NR, in->new_serial_nr); |
| 216 | if (in->old_serial_nr) |
| 217 | msgb_tv16_put(msg, CBSP_IEI_OLD_SERIAL_NR, *in->old_serial_nr); |
| 218 | |
| 219 | msgb_put_cbsp_fail_list(msg, &in->fail_list); |
| 220 | if (!llist_empty(&in->num_compl_list.list)) |
| 221 | msgb_put_cbsp_num_compl_list(msg, &in->num_compl_list); |
| 222 | if (!llist_empty(&in->cell_list.list)) |
| 223 | msgb_put_cbsp_cell_list(msg, &in->cell_list); |
| 224 | if (in->channel_ind) |
| 225 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, *in->channel_ind); |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | /* 8.1.3.4 KILL */ |
| 230 | static int cbsp_enc_kill(struct msgb *msg, const struct osmo_cbsp_kill *in) |
| 231 | { |
| 232 | msgb_tv16_put(msg, CBSP_IEI_MSG_ID, in->msg_id); |
| 233 | msgb_tv16_put(msg, CBSP_IEI_OLD_SERIAL_NR, in->old_serial_nr); |
| 234 | msgb_put_cbsp_cell_list(msg, &in->cell_list); |
| 235 | if (in->channel_ind) |
| 236 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, *in->channel_ind); |
| 237 | return 0; |
| 238 | } |
| 239 | |
| 240 | /* 8.1.3.5 KILL COMPLETE */ |
| 241 | static int cbsp_enc_kill_compl(struct msgb *msg, const struct osmo_cbsp_kill_complete *in) |
| 242 | { |
| 243 | msgb_tv16_put(msg, CBSP_IEI_MSG_ID, in->msg_id); |
| 244 | msgb_tv16_put(msg, CBSP_IEI_OLD_SERIAL_NR, in->old_serial_nr); |
| 245 | if (!llist_empty(&in->num_compl_list.list)) |
| 246 | msgb_put_cbsp_num_compl_list(msg, &in->num_compl_list); |
| 247 | if (!llist_empty(&in->cell_list.list)) |
| 248 | msgb_put_cbsp_cell_list(msg, &in->cell_list); |
| 249 | if (in->channel_ind) |
| 250 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, *in->channel_ind); |
| 251 | return 0; |
| 252 | } |
| 253 | |
| 254 | /* 8.1.3.6 KILL FAILURE */ |
| 255 | static int cbsp_enc_kill_fail(struct msgb *msg, const struct osmo_cbsp_kill_failure *in) |
| 256 | { |
| 257 | msgb_tv16_put(msg, CBSP_IEI_MSG_ID, in->msg_id); |
| 258 | msgb_tv16_put(msg, CBSP_IEI_OLD_SERIAL_NR, in->old_serial_nr); |
| 259 | msgb_put_cbsp_fail_list(msg, &in->fail_list); |
| 260 | if (!llist_empty(&in->num_compl_list.list)) |
| 261 | msgb_put_cbsp_num_compl_list(msg, &in->num_compl_list); |
| 262 | if (!llist_empty(&in->cell_list.list)) |
| 263 | msgb_put_cbsp_cell_list(msg, &in->cell_list); |
| 264 | if (in->channel_ind) |
| 265 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, *in->channel_ind); |
| 266 | return 0; |
| 267 | } |
| 268 | |
| 269 | /* 8.1.3.7 LOAD QUERY */ |
| 270 | static int cbsp_enc_load_query(struct msgb *msg, const struct osmo_cbsp_load_query *in) |
| 271 | { |
| 272 | msgb_put_cbsp_cell_list(msg, &in->cell_list); |
| 273 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, in->channel_ind); |
| 274 | return 0; |
| 275 | } |
| 276 | |
| 277 | /* 8.1.3.8 LOAD QUERY COMPLETE */ |
| 278 | static int cbsp_enc_load_query_compl(struct msgb *msg, const struct osmo_cbsp_load_query_complete *in) |
| 279 | { |
| 280 | msgb_put_cbsp_loading_list(msg, &in->loading_list); |
| 281 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, in->channel_ind); |
| 282 | return 0; |
| 283 | } |
| 284 | |
| 285 | /* 8.1.3.9 LOAD QUERY FAILURE */ |
| 286 | static int cbsp_enc_load_query_fail(struct msgb *msg, const struct osmo_cbsp_load_query_failure *in) |
| 287 | { |
| 288 | msgb_put_cbsp_fail_list(msg, &in->fail_list); |
| 289 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, in->channel_ind); |
| 290 | if (!llist_empty(&in->loading_list.list)) |
| 291 | msgb_put_cbsp_loading_list(msg, &in->loading_list); |
| 292 | return 0; |
| 293 | } |
| 294 | |
| 295 | /* 8.1.3.10 STATUS QUERY */ |
| 296 | static int cbsp_enc_msg_status_query(struct msgb *msg, const struct osmo_cbsp_msg_status_query *in) |
| 297 | { |
| 298 | msgb_tv16_put(msg, CBSP_IEI_MSG_ID, in->msg_id); |
| 299 | msgb_tv16_put(msg, CBSP_IEI_OLD_SERIAL_NR, in->old_serial_nr); |
| 300 | msgb_put_cbsp_cell_list(msg, &in->cell_list); |
| 301 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, in->channel_ind); |
| 302 | return 0; |
| 303 | } |
| 304 | |
| 305 | /* 8.1.3.11 STATUS QUERY COMPLETE */ |
| 306 | static int cbsp_enc_msg_status_query_compl(struct msgb *msg, |
| 307 | const struct osmo_cbsp_msg_status_query_complete *in) |
| 308 | { |
| 309 | msgb_tv16_put(msg, CBSP_IEI_MSG_ID, in->msg_id); |
| 310 | msgb_tv16_put(msg, CBSP_IEI_OLD_SERIAL_NR, in->old_serial_nr); |
| 311 | msgb_put_cbsp_num_compl_list(msg, &in->num_compl_list); |
| 312 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, in->channel_ind); |
| 313 | return 0; |
| 314 | } |
| 315 | |
| 316 | /* 8.1.3.12 STATUS QUERY FAILURE */ |
| 317 | static int cbsp_enc_msg_status_query_fail(struct msgb *msg, |
| 318 | const struct osmo_cbsp_msg_status_query_failure *in) |
| 319 | { |
| 320 | msgb_tv16_put(msg, CBSP_IEI_MSG_ID, in->msg_id); |
| 321 | msgb_tv16_put(msg, CBSP_IEI_OLD_SERIAL_NR, in->old_serial_nr); |
| 322 | msgb_put_cbsp_fail_list(msg, &in->fail_list); |
| 323 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, in->channel_ind); |
| 324 | if (!llist_empty(&in->num_compl_list.list)) |
| 325 | msgb_put_cbsp_num_compl_list(msg, &in->num_compl_list); |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | /* 8.1.3.16 RESET */ |
| 330 | static int cbsp_enc_reset(struct msgb *msg, const struct osmo_cbsp_reset *in) |
| 331 | { |
| 332 | msgb_put_cbsp_cell_list(msg, &in->cell_list); |
| 333 | return 0; |
| 334 | } |
| 335 | |
| 336 | /* 8.1.3.17 RESET COMPLETE */ |
| 337 | static int cbsp_enc_reset_compl(struct msgb *msg, const struct osmo_cbsp_reset_complete *in) |
| 338 | { |
| 339 | msgb_put_cbsp_cell_list(msg, &in->cell_list); |
| 340 | return 0; |
| 341 | } |
| 342 | |
| 343 | /* 8.1.3.18 RESET FAILURE */ |
| 344 | static int cbsp_enc_reset_fail(struct msgb *msg, const struct osmo_cbsp_reset_failure *in) |
| 345 | { |
| 346 | msgb_put_cbsp_fail_list(msg, &in->fail_list); |
| 347 | if (!llist_empty(&in->cell_list.list)) |
| 348 | msgb_put_cbsp_cell_list(msg, &in->cell_list); |
| 349 | return 0; |
| 350 | } |
| 351 | |
| 352 | /* 8.1.3.18a KEEP ALIVE */ |
| 353 | static int cbsp_enc_keep_alive(struct msgb *msg, const struct osmo_cbsp_keep_alive *in) |
| 354 | { |
Harald Welte | 48f22b0 | 2021-02-22 09:55:44 +0100 | [diff] [blame] | 355 | int rperiod = encode_wperiod(in->repetition_period); |
| 356 | if (in->repetition_period > 120) |
| 357 | return -EINVAL; |
| 358 | if (rperiod < 0) |
| 359 | return -EINVAL; |
| 360 | msgb_tv_put(msg, CBSP_IEI_KEEP_ALIVE_REP_PERIOD, rperiod); |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 361 | return 0; |
| 362 | } |
| 363 | |
| 364 | /* 8.1.3.18b KEEP ALIVE COMPLETE */ |
| 365 | static int cbsp_enc_keep_alive_compl(struct msgb *msg, const struct osmo_cbsp_keep_alive_complete *in) |
| 366 | { |
| 367 | return 0; |
| 368 | } |
| 369 | |
| 370 | /* 8.1.3.19 RESTART */ |
| 371 | static int cbsp_enc_restart(struct msgb *msg, const struct osmo_cbsp_restart *in) |
| 372 | { |
| 373 | msgb_put_cbsp_cell_list(msg, &in->cell_list); |
| 374 | msgb_tv_put(msg, CBSP_IEI_BCAST_MSG_TYPE, in->bcast_msg_type); |
| 375 | msgb_tv_put(msg, CBSP_IEI_RECOVERY_IND, in->recovery_ind); |
| 376 | return 0; |
| 377 | } |
| 378 | |
| 379 | /* 8.1.3.20 FAILURE */ |
| 380 | static int cbsp_enc_failure(struct msgb *msg, const struct osmo_cbsp_failure *in) |
| 381 | { |
| 382 | msgb_put_cbsp_fail_list(msg, &in->fail_list); |
| 383 | msgb_tv_put(msg, CBSP_IEI_BCAST_MSG_TYPE, in->bcast_msg_type); |
| 384 | return 0; |
| 385 | } |
| 386 | |
| 387 | /* 8.1.3.21 ERROR INDICATION */ |
| 388 | static int cbsp_enc_error_ind(struct msgb *msg, const struct osmo_cbsp_error_ind *in) |
| 389 | { |
| 390 | msgb_tv_put(msg, CBSP_IEI_CAUSE, in->cause); |
| 391 | if (in->msg_id) |
| 392 | msgb_tv16_put(msg, CBSP_IEI_MSG_ID, *in->msg_id); |
| 393 | if (in->new_serial_nr) |
| 394 | msgb_tv16_put(msg, CBSP_IEI_NEW_SERIAL_NR, *in->new_serial_nr); |
| 395 | if (in->old_serial_nr) |
| 396 | msgb_tv16_put(msg, CBSP_IEI_OLD_SERIAL_NR, *in->old_serial_nr); |
| 397 | if (in->channel_ind) |
| 398 | msgb_tv_put(msg, CBSP_IEI_CHANNEL_IND, *in->channel_ind); |
| 399 | return 0; |
| 400 | } |
| 401 | |
| 402 | /*! Encode a CBSP message from the decoded/parsed structure representation to binary PDU. |
| 403 | * \param[in] ctx talloc context from which to allocate returned msgb. |
| 404 | * \param[in] in decoded CBSP message which is to be encoded. Ownership not transferred. |
| 405 | * \return callee-allocated message buffer containing binary CBSP PDU; NULL on error */ |
| 406 | struct msgb *osmo_cbsp_encode(void *ctx, const struct osmo_cbsp_decoded *in) |
| 407 | { |
| 408 | struct msgb *msg = osmo_cbsp_msgb_alloc(ctx, __func__); |
| 409 | unsigned int len; |
| 410 | int rc; |
| 411 | |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 412 | osmo_cbsp_errstr = NULL; |
| 413 | |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 414 | if (!msg) |
| 415 | return NULL; |
| 416 | |
| 417 | switch (in->msg_type) { |
| 418 | case CBSP_MSGT_WRITE_REPLACE: |
| 419 | rc = cbsp_enc_write_repl(msg, &in->u.write_replace); |
| 420 | break; |
| 421 | case CBSP_MSGT_WRITE_REPLACE_COMPL: |
| 422 | rc = cbsp_enc_write_repl_compl(msg, &in->u.write_replace_compl); |
| 423 | break; |
| 424 | case CBSP_MSGT_WRITE_REPLACE_FAIL: |
| 425 | rc = cbsp_enc_write_repl_fail(msg, &in->u.write_replace_fail); |
| 426 | break; |
| 427 | case CBSP_MSGT_KILL: |
| 428 | rc = cbsp_enc_kill(msg, &in->u.kill); |
| 429 | break; |
| 430 | case CBSP_MSGT_KILL_COMPL: |
| 431 | rc = cbsp_enc_kill_compl(msg, &in->u.kill_compl); |
| 432 | break; |
| 433 | case CBSP_MSGT_KILL_FAIL: |
| 434 | rc = cbsp_enc_kill_fail(msg, &in->u.kill_fail); |
| 435 | break; |
| 436 | case CBSP_MSGT_LOAD_QUERY: |
| 437 | rc = cbsp_enc_load_query(msg, &in->u.load_query); |
| 438 | break; |
| 439 | case CBSP_MSGT_LOAD_QUERY_COMPL: |
| 440 | rc = cbsp_enc_load_query_compl(msg, &in->u.load_query_compl); |
| 441 | break; |
| 442 | case CBSP_MSGT_LOAD_QUERY_FAIL: |
| 443 | rc = cbsp_enc_load_query_fail(msg, &in->u.load_query_fail); |
| 444 | break; |
| 445 | case CBSP_MSGT_MSG_STATUS_QUERY: |
| 446 | rc = cbsp_enc_msg_status_query(msg, &in->u.msg_status_query); |
| 447 | break; |
| 448 | case CBSP_MSGT_MSG_STATUS_QUERY_COMPL: |
| 449 | rc = cbsp_enc_msg_status_query_compl(msg, &in->u.msg_status_query_compl); |
| 450 | break; |
| 451 | case CBSP_MSGT_MSG_STATUS_QUERY_FAIL: |
| 452 | rc = cbsp_enc_msg_status_query_fail(msg, &in->u.msg_status_query_fail); |
| 453 | break; |
| 454 | case CBSP_MSGT_RESET: |
| 455 | rc = cbsp_enc_reset(msg, &in->u.reset); |
| 456 | break; |
| 457 | case CBSP_MSGT_RESET_COMPL: |
| 458 | rc = cbsp_enc_reset_compl(msg, &in->u.reset_compl); |
| 459 | break; |
| 460 | case CBSP_MSGT_RESET_FAIL: |
| 461 | rc = cbsp_enc_reset_fail(msg, &in->u.reset_fail); |
| 462 | break; |
| 463 | case CBSP_MSGT_RESTART: |
| 464 | rc = cbsp_enc_restart(msg, &in->u.restart); |
| 465 | break; |
| 466 | case CBSP_MSGT_FAILURE: |
| 467 | rc = cbsp_enc_failure(msg, &in->u.failure); |
| 468 | break; |
| 469 | case CBSP_MSGT_ERROR_IND: |
| 470 | rc = cbsp_enc_error_ind(msg, &in->u.error_ind); |
| 471 | break; |
| 472 | case CBSP_MSGT_KEEP_ALIVE: |
| 473 | rc = cbsp_enc_keep_alive(msg, &in->u.keep_alive); |
| 474 | break; |
| 475 | case CBSP_MSGT_KEEP_ALIVE_COMPL: |
| 476 | rc = cbsp_enc_keep_alive_compl(msg, &in->u.keep_alive_compl); |
| 477 | break; |
| 478 | case CBSP_MSGT_SET_DRX: |
| 479 | case CBSP_MSGT_SET_DRX_COMPL: |
| 480 | case CBSP_MSGT_SET_DRX_FAIL: |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 481 | osmo_cbsp_errstr = "message type not implemented"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 482 | rc = -1; |
| 483 | break; |
| 484 | default: |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 485 | osmo_cbsp_errstr = "message type not known in spec"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 486 | rc = -1; |
| 487 | break; |
| 488 | } |
| 489 | |
| 490 | if (rc < 0) { |
| 491 | msgb_free(msg); |
| 492 | return NULL; |
| 493 | } |
| 494 | |
| 495 | /* push header in front */ |
| 496 | len = msgb_length(msg); |
| 497 | msgb_push_u8(msg, len & 0xff); |
| 498 | msgb_push_u8(msg, (len >> 8) & 0xff); |
| 499 | msgb_push_u8(msg, (len >> 16) & 0xff); |
| 500 | msgb_push_u8(msg, in->msg_type); |
| 501 | |
| 502 | return msg; |
| 503 | } |
| 504 | |
| 505 | /*********************************************************************** |
| 506 | * IE Decoding |
| 507 | ***********************************************************************/ |
| 508 | |
| 509 | /* 8.2.6 Cell List */ |
| 510 | static int cbsp_decode_cell_list(struct osmo_cbsp_cell_list *cl, void *ctx, |
| 511 | const uint8_t *buf, unsigned int len) |
| 512 | { |
| 513 | const uint8_t *cur = buf; |
| 514 | int rc; |
| 515 | |
| 516 | cl->id_discr = *cur++; |
| 517 | |
| 518 | while (cur < buf + len) { |
| 519 | struct osmo_cbsp_cell_ent *ent = talloc_zero(ctx, struct osmo_cbsp_cell_ent); |
| 520 | unsigned int len_remain = len - (cur - buf); |
| 521 | OSMO_ASSERT(ent); |
| 522 | rc = gsm0808_decode_cell_id_u(&ent->cell_id, cl->id_discr, cur, len_remain); |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 523 | if (rc < 0) { |
| 524 | osmo_cbsp_errstr = "cell list: error decoding cell_id_union"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 525 | return rc; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 526 | } |
Harald Welte | f221003 | 2019-08-31 21:25:05 +0200 | [diff] [blame] | 527 | cur += gsm0808_cell_id_size(cl->id_discr); |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 528 | llist_add_tail(&ent->list, &cl->list); |
| 529 | } |
| 530 | return 0; |
| 531 | } |
| 532 | |
| 533 | /* 8.2.11 Failure List (discriminator per entry) */ |
| 534 | static int cbsp_decode_fail_list(struct llist_head *fl, void *ctx, |
| 535 | const uint8_t *buf, unsigned int len) |
| 536 | { |
| 537 | const uint8_t *cur = buf; |
| 538 | int rc; |
| 539 | |
| 540 | while (cur < buf + len) { |
| 541 | struct osmo_cbsp_fail_ent *ent = talloc_zero(ctx, struct osmo_cbsp_fail_ent); |
| 542 | unsigned int len_remain = len - (cur - buf); |
| 543 | OSMO_ASSERT(ent); |
| 544 | ent->id_discr = cur[0]; |
| 545 | rc = gsm0808_decode_cell_id_u(&ent->cell_id, ent->id_discr, cur+1, len_remain-1); |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 546 | if (rc < 0) { |
| 547 | osmo_cbsp_errstr = "fail list: error decoding cell_id_union"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 548 | return rc; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 549 | } |
Harald Welte | f221003 | 2019-08-31 21:25:05 +0200 | [diff] [blame] | 550 | cur += gsm0808_cell_id_size(ent->id_discr); |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 551 | ent->cause = *cur++; |
| 552 | llist_add_tail(&ent->list, fl); |
| 553 | } |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | /* 8.2.12 Radio Resource Loading List */ |
| 558 | static int cbsp_decode_loading_list(struct osmo_cbsp_loading_list *ll, void *ctx, |
| 559 | const uint8_t *buf, unsigned int len) |
| 560 | { |
| 561 | const uint8_t *cur = buf; |
| 562 | int rc; |
| 563 | |
| 564 | ll->id_discr = *cur++; |
| 565 | while (cur < buf + len) { |
| 566 | struct osmo_cbsp_loading_ent *ent = talloc_zero(ctx, struct osmo_cbsp_loading_ent); |
| 567 | unsigned int len_remain = len - (cur - buf); |
| 568 | OSMO_ASSERT(ent); |
| 569 | rc = gsm0808_decode_cell_id_u(&ent->cell_id, ll->id_discr, cur, len_remain); |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 570 | if (rc < 0) { |
| 571 | osmo_cbsp_errstr = "load list: error decoding cell_id_union"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 572 | return rc; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 573 | } |
Harald Welte | f221003 | 2019-08-31 21:25:05 +0200 | [diff] [blame] | 574 | cur += gsm0808_cell_id_size(ll->id_discr); |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 575 | if (cur + 2 > buf + len) { |
| 576 | talloc_free(ent); |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 577 | osmo_cbsp_errstr = "load list: truncated IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 578 | return -EINVAL; |
| 579 | } |
| 580 | ent->load[0] = *cur++; |
| 581 | ent->load[1] = *cur++; |
| 582 | llist_add_tail(&ent->list, &ll->list); |
| 583 | } |
| 584 | return 0; |
| 585 | } |
| 586 | |
| 587 | /* 8.2.10 Completed List */ |
| 588 | static int cbsp_decode_num_compl_list(struct osmo_cbsp_num_compl_list *cl, void *ctx, |
| 589 | const uint8_t *buf, unsigned int len) |
| 590 | { |
| 591 | const uint8_t *cur = buf; |
| 592 | int rc; |
| 593 | |
| 594 | cl->id_discr = *cur++; |
| 595 | while (cur < buf + len) { |
| 596 | struct osmo_cbsp_num_compl_ent *ent = talloc_zero(ctx, struct osmo_cbsp_num_compl_ent); |
| 597 | unsigned int len_remain = len - (cur - buf); |
| 598 | OSMO_ASSERT(ent); |
| 599 | rc = gsm0808_decode_cell_id_u(&ent->cell_id, cl->id_discr, cur, len_remain); |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 600 | if (rc < 0) { |
| 601 | osmo_cbsp_errstr = "completed list: error decoding cell_id_union"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 602 | return rc; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 603 | } |
Harald Welte | f221003 | 2019-08-31 21:25:05 +0200 | [diff] [blame] | 604 | cur += gsm0808_cell_id_size(cl->id_discr); |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 605 | if (cur + 3 > buf + len) { |
| 606 | talloc_free(ent); |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 607 | osmo_cbsp_errstr = "completed list: truncated IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 608 | return -EINVAL; |
| 609 | } |
| 610 | ent->num_compl = osmo_load16be(cur); cur += 2; |
| 611 | ent->num_bcast_info = *cur++; |
| 612 | llist_add_tail(&ent->list, &cl->list); |
| 613 | } |
| 614 | return 0; |
| 615 | } |
| 616 | |
| 617 | /* 8.2.25 */ |
| 618 | static uint32_t decode_wperiod(uint8_t in) |
| 619 | { |
| 620 | if (in == 0x00) |
| 621 | return 0xffffffff; /* infinite */ |
| 622 | if (in <= 10) |
| 623 | return in; |
| 624 | if (in <= 20) |
| 625 | return 10 + (in - 10)*2; |
| 626 | if (in <= 38) |
| 627 | return 30 + (in - 20)*5; |
| 628 | if (in <= 86) |
| 629 | return 120 + (in - 38)*10; |
| 630 | if (in <= 186) |
| 631 | return 600 + (in - 86)*30; |
| 632 | else |
| 633 | return 0; |
| 634 | } |
| 635 | |
| 636 | |
| 637 | /*********************************************************************** |
| 638 | * Message Decoding |
| 639 | ***********************************************************************/ |
| 640 | |
| 641 | /* 8.1.3.1 WRITE REPLACE */ |
| 642 | static int cbsp_dec_write_repl(struct osmo_cbsp_write_replace *out, const struct tlv_parsed *tp, |
| 643 | struct msgb *in, void *ctx) |
| 644 | { |
| 645 | unsigned int i; |
| 646 | |
| 647 | /* check for mandatory IEs */ |
| 648 | if (!TLVP_PRESENT(tp, CBSP_IEI_MSG_ID) || |
| 649 | !TLVP_PRESENT(tp, CBSP_IEI_NEW_SERIAL_NR) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 650 | !TLVP_PRESENT(tp, CBSP_IEI_CELL_LIST)) { |
| 651 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 652 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 653 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 654 | |
| 655 | out->msg_id = tlvp_val16be(tp, CBSP_IEI_MSG_ID); |
| 656 | out->new_serial_nr = tlvp_val16be(tp, CBSP_IEI_NEW_SERIAL_NR); |
| 657 | if (TLVP_PRESENT(tp, CBSP_IEI_OLD_SERIAL_NR)) { |
| 658 | out->old_serial_nr = talloc(ctx, uint16_t); |
| 659 | *out->old_serial_nr = tlvp_val16be(tp, CBSP_IEI_OLD_SERIAL_NR); |
| 660 | } |
| 661 | |
| 662 | INIT_LLIST_HEAD(&out->cell_list.list); |
| 663 | cbsp_decode_cell_list(&out->cell_list, ctx, TLVP_VAL(tp, CBSP_IEI_CELL_LIST), |
| 664 | TLVP_LEN(tp, CBSP_IEI_CELL_LIST)); |
| 665 | |
| 666 | if (TLVP_PRESENT(tp, CBSP_IEI_CHANNEL_IND)) { |
| 667 | uint8_t num_of_pages; |
| 668 | INIT_LLIST_HEAD(&out->u.cbs.msg_content); |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 669 | if (TLVP_PRESENT(tp, CBSP_IEI_EMERG_IND)) { |
| 670 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 671 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 672 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 673 | if (!TLVP_PRESENT(tp, CBSP_IEI_CATEGORY) || |
| 674 | !TLVP_PRESENT(tp, CBSP_IEI_REP_PERIOD) || |
| 675 | !TLVP_PRESENT(tp, CBSP_IEI_NUM_BCAST_REQ) || |
| 676 | !TLVP_PRESENT(tp, CBSP_IEI_NUM_OF_PAGES) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 677 | !TLVP_PRESENT(tp, CBSP_IEI_DCS)) { |
| 678 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 679 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 680 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 681 | out->is_cbs = true; |
| 682 | out->u.cbs.channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 683 | out->u.cbs.category = *TLVP_VAL(tp, CBSP_IEI_CATEGORY); |
| 684 | out->u.cbs.rep_period = tlvp_val16be(tp, CBSP_IEI_REP_PERIOD); |
| 685 | out->u.cbs.num_bcast_req = tlvp_val16be(tp, CBSP_IEI_NUM_BCAST_REQ); |
Harald Welte | 886e742 | 2021-01-02 22:30:02 +0100 | [diff] [blame] | 686 | out->u.cbs.dcs = *TLVP_VAL(tp, CBSP_IEI_DCS); |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 687 | num_of_pages = *TLVP_VAL(tp, CBSP_IEI_NUM_OF_PAGES); |
| 688 | if (num_of_pages < 1) |
| 689 | return -EINVAL; |
| 690 | /* parse pages */ |
| 691 | for (i = 0; i < num_of_pages; i++) { |
| 692 | const uint8_t *ie = TLVP_VAL(&tp[i], CBSP_IEI_MSG_CONTENT); |
| 693 | struct osmo_cbsp_content *page; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 694 | if (!ie) { |
| 695 | osmo_cbsp_errstr = "insufficient message content IEs"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 696 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 697 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 698 | page = talloc_zero(ctx, struct osmo_cbsp_content); |
| 699 | OSMO_ASSERT(page); |
Harald Welte | e674c44 | 2019-09-01 22:30:58 +0200 | [diff] [blame] | 700 | page->user_len = ie[0]; /* length byte before payload */ |
| 701 | memcpy(page->data, ie+1, sizeof(page->data)); |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 702 | llist_add_tail(&page->list, &out->u.cbs.msg_content); |
| 703 | } |
| 704 | } else { |
| 705 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_EMERG_IND, 1) || |
| 706 | !TLVP_PRES_LEN(tp, CBSP_IEI_WARN_TYPE, 2) || |
| 707 | !TLVP_PRES_LEN(tp, CBSP_IEI_WARN_SEC_INFO, 50) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 708 | !TLVP_PRES_LEN(tp, CBSP_IEI_WARNING_PERIOD, 1)) { |
| 709 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 710 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 711 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 712 | out->u.emergency.indicator = *TLVP_VAL(tp, CBSP_IEI_EMERG_IND); |
| 713 | out->u.emergency.warning_type = tlvp_val16be(tp, CBSP_IEI_WARN_TYPE); |
| 714 | memcpy(&out->u.emergency.warning_sec_info, TLVP_VAL(tp, CBSP_IEI_WARN_SEC_INFO), |
| 715 | sizeof(out->u.emergency.warning_sec_info)); |
| 716 | out->u.emergency.warning_period = decode_wperiod(*TLVP_VAL(tp, CBSP_IEI_WARNING_PERIOD)); |
| 717 | } |
| 718 | return 0; |
| 719 | } |
| 720 | |
| 721 | /* 8.1.3.2 WRITE REPLACE COMPLETE*/ |
| 722 | static int cbsp_dec_write_repl_compl(struct osmo_cbsp_write_replace_complete *out, |
| 723 | const struct tlv_parsed *tp, struct msgb *in, void *ctx) |
| 724 | { |
| 725 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_MSG_ID, 2) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 726 | !TLVP_PRES_LEN(tp, CBSP_IEI_NEW_SERIAL_NR, 2)) { |
| 727 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 728 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 729 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 730 | |
| 731 | out->msg_id = tlvp_val16be(tp, CBSP_IEI_MSG_ID); |
| 732 | out->new_serial_nr = tlvp_val16be(tp, CBSP_IEI_NEW_SERIAL_NR); |
| 733 | if (TLVP_PRES_LEN(tp, CBSP_IEI_OLD_SERIAL_NR, 2)) { |
| 734 | out->old_serial_nr = talloc(ctx, uint16_t); |
| 735 | *out->old_serial_nr = tlvp_val16be(tp, CBSP_IEI_OLD_SERIAL_NR); |
| 736 | } |
| 737 | |
| 738 | INIT_LLIST_HEAD(&out->num_compl_list.list); |
| 739 | if (TLVP_PRES_LEN(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST, 7)) { |
| 740 | cbsp_decode_num_compl_list(&out->num_compl_list, ctx, |
| 741 | TLVP_VAL(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST), |
| 742 | TLVP_LEN(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST)); |
| 743 | } |
| 744 | |
| 745 | INIT_LLIST_HEAD(&out->cell_list.list); |
| 746 | cbsp_decode_cell_list(&out->cell_list, ctx, TLVP_VAL(tp, CBSP_IEI_CELL_LIST), |
| 747 | TLVP_LEN(tp, CBSP_IEI_CELL_LIST)); |
| 748 | |
| 749 | if (TLVP_PRES_LEN(tp, CBSP_IEI_CHANNEL_IND, 1)) { |
| 750 | out->channel_ind = talloc(ctx, enum cbsp_channel_ind); |
| 751 | *out->channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 752 | } |
| 753 | return 0; |
| 754 | } |
| 755 | |
| 756 | /* 8.1.3.3 WRITE REPLACE FAILURE */ |
| 757 | static int cbsp_dec_write_repl_fail(struct osmo_cbsp_write_replace_failure *out, |
| 758 | const struct tlv_parsed *tp, struct msgb *in, void *ctx) |
| 759 | { |
| 760 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_MSG_ID, 2) || |
| 761 | !TLVP_PRES_LEN(tp, CBSP_IEI_NEW_SERIAL_NR, 2) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 762 | !TLVP_PRES_LEN(tp, CBSP_IEI_FAILURE_LIST, 5)) { |
| 763 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 764 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 765 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 766 | |
| 767 | out->msg_id = tlvp_val16be(tp, CBSP_IEI_MSG_ID); |
| 768 | out->new_serial_nr = tlvp_val16be(tp, CBSP_IEI_NEW_SERIAL_NR); |
| 769 | if (TLVP_PRES_LEN(tp, CBSP_IEI_OLD_SERIAL_NR, 2)) { |
| 770 | out->old_serial_nr = talloc(ctx, uint16_t); |
| 771 | *out->old_serial_nr = tlvp_val16be(tp, CBSP_IEI_OLD_SERIAL_NR); |
| 772 | } |
| 773 | |
| 774 | INIT_LLIST_HEAD(&out->fail_list); |
| 775 | cbsp_decode_fail_list(&out->fail_list, ctx, |
| 776 | TLVP_VAL(tp, CBSP_IEI_FAILURE_LIST), |
| 777 | TLVP_LEN(tp, CBSP_IEI_FAILURE_LIST)); |
| 778 | |
| 779 | INIT_LLIST_HEAD(&out->num_compl_list.list); |
| 780 | if (TLVP_PRES_LEN(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST, 7)) { |
| 781 | cbsp_decode_num_compl_list(&out->num_compl_list, ctx, |
| 782 | TLVP_VAL(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST), |
| 783 | TLVP_LEN(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST)); |
| 784 | } |
| 785 | |
| 786 | INIT_LLIST_HEAD(&out->cell_list.list); |
| 787 | if (TLVP_PRES_LEN(tp, CBSP_IEI_CELL_LIST, 1)) { |
| 788 | cbsp_decode_cell_list(&out->cell_list, ctx, TLVP_VAL(tp, CBSP_IEI_CELL_LIST), |
| 789 | TLVP_LEN(tp, CBSP_IEI_CELL_LIST)); |
| 790 | } |
| 791 | |
| 792 | if (TLVP_PRES_LEN(tp, CBSP_IEI_CHANNEL_IND, 1)) { |
| 793 | out->channel_ind = talloc(ctx, enum cbsp_channel_ind); |
| 794 | *out->channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 795 | } |
| 796 | return 0; |
| 797 | } |
| 798 | |
| 799 | /* 8.1.3.4 KILL */ |
| 800 | static int cbsp_dec_kill(struct osmo_cbsp_kill *out, const struct tlv_parsed *tp, |
| 801 | struct msgb *in, void *ctx) |
| 802 | { |
| 803 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_MSG_ID, 2) || |
| 804 | !TLVP_PRES_LEN(tp, CBSP_IEI_OLD_SERIAL_NR, 2) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 805 | !TLVP_PRES_LEN(tp, CBSP_IEI_CELL_LIST, 1)) { |
| 806 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 807 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 808 | } |
| 809 | |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 810 | out->msg_id = tlvp_val16be(tp, CBSP_IEI_MSG_ID); |
| 811 | out->old_serial_nr = tlvp_val16be(tp, CBSP_IEI_OLD_SERIAL_NR); |
| 812 | |
| 813 | INIT_LLIST_HEAD(&out->cell_list.list); |
| 814 | cbsp_decode_cell_list(&out->cell_list, ctx, TLVP_VAL(tp, CBSP_IEI_CELL_LIST), |
| 815 | TLVP_LEN(tp, CBSP_IEI_CELL_LIST)); |
| 816 | |
| 817 | if (TLVP_PRES_LEN(tp, CBSP_IEI_CHANNEL_IND, 1)) { |
| 818 | out->channel_ind = talloc(ctx, enum cbsp_channel_ind); |
| 819 | *out->channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 820 | } |
| 821 | return 0; |
| 822 | } |
| 823 | |
| 824 | /* 8.1.3.5 KILL COMPLETE */ |
| 825 | static int cbsp_dec_kill_compl(struct osmo_cbsp_kill_complete *out, const struct tlv_parsed *tp, |
| 826 | struct msgb *in, void *ctx) |
| 827 | { |
| 828 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_MSG_ID, 2) || |
| 829 | !TLVP_PRES_LEN(tp, CBSP_IEI_OLD_SERIAL_NR, 2) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 830 | !TLVP_PRES_LEN(tp, CBSP_IEI_CELL_LIST, 1)) { |
| 831 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 832 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 833 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 834 | |
| 835 | out->msg_id = tlvp_val16be(tp, CBSP_IEI_MSG_ID); |
| 836 | out->old_serial_nr = tlvp_val16be(tp, CBSP_IEI_OLD_SERIAL_NR); |
| 837 | |
| 838 | INIT_LLIST_HEAD(&out->num_compl_list.list); |
| 839 | if (TLVP_PRES_LEN(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST, 7)) { |
| 840 | cbsp_decode_num_compl_list(&out->num_compl_list, ctx, |
| 841 | TLVP_VAL(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST), |
| 842 | TLVP_LEN(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST)); |
| 843 | } |
| 844 | |
| 845 | INIT_LLIST_HEAD(&out->cell_list.list); |
| 846 | cbsp_decode_cell_list(&out->cell_list, ctx, TLVP_VAL(tp, CBSP_IEI_CELL_LIST), |
| 847 | TLVP_LEN(tp, CBSP_IEI_CELL_LIST)); |
| 848 | |
| 849 | if (TLVP_PRES_LEN(tp, CBSP_IEI_CHANNEL_IND, 1)) { |
| 850 | out->channel_ind = talloc(ctx, enum cbsp_channel_ind); |
| 851 | *out->channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 852 | } |
| 853 | return 0; |
| 854 | } |
| 855 | |
| 856 | /* 8.1.3.6 KILL FAILURE */ |
| 857 | static int cbsp_dec_kill_fail(struct osmo_cbsp_kill_failure *out, const struct tlv_parsed *tp, |
| 858 | struct msgb *in, void *ctx) |
| 859 | { |
| 860 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_MSG_ID, 2) || |
| 861 | !TLVP_PRES_LEN(tp, CBSP_IEI_OLD_SERIAL_NR, 2) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 862 | !TLVP_PRES_LEN(tp, CBSP_IEI_FAILURE_LIST, 5)) { |
| 863 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 864 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 865 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 866 | |
| 867 | out->msg_id = tlvp_val16be(tp, CBSP_IEI_MSG_ID); |
| 868 | out->old_serial_nr = tlvp_val16be(tp, CBSP_IEI_OLD_SERIAL_NR); |
| 869 | |
| 870 | INIT_LLIST_HEAD(&out->fail_list); |
| 871 | cbsp_decode_fail_list(&out->fail_list, ctx, |
| 872 | TLVP_VAL(tp, CBSP_IEI_FAILURE_LIST), |
| 873 | TLVP_LEN(tp, CBSP_IEI_FAILURE_LIST)); |
| 874 | |
| 875 | INIT_LLIST_HEAD(&out->num_compl_list.list); |
| 876 | if (TLVP_PRES_LEN(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST, 7)) { |
| 877 | cbsp_decode_num_compl_list(&out->num_compl_list, ctx, |
| 878 | TLVP_VAL(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST), |
| 879 | TLVP_LEN(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST)); |
| 880 | } |
| 881 | |
| 882 | INIT_LLIST_HEAD(&out->cell_list.list); |
| 883 | if (TLVP_PRES_LEN(tp, CBSP_IEI_CELL_LIST, 1)) { |
| 884 | cbsp_decode_cell_list(&out->cell_list, ctx, TLVP_VAL(tp, CBSP_IEI_CELL_LIST), |
| 885 | TLVP_LEN(tp, CBSP_IEI_CELL_LIST)); |
| 886 | } |
| 887 | |
| 888 | if (TLVP_PRES_LEN(tp, CBSP_IEI_CHANNEL_IND, 1)) { |
| 889 | out->channel_ind = talloc(ctx, enum cbsp_channel_ind); |
| 890 | *out->channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 891 | } |
| 892 | return 0; |
| 893 | } |
| 894 | |
| 895 | /* 8.1.3.7 LOAD QUERY */ |
| 896 | static int cbsp_dec_load_query(struct osmo_cbsp_load_query *out, const struct tlv_parsed *tp, |
| 897 | struct msgb *in, void *ctx) |
| 898 | { |
| 899 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_CELL_LIST, 1) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 900 | !TLVP_PRES_LEN(tp, CBSP_IEI_CHANNEL_IND, 1)) { |
| 901 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 902 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 903 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 904 | |
| 905 | INIT_LLIST_HEAD(&out->cell_list.list); |
| 906 | cbsp_decode_cell_list(&out->cell_list, ctx, TLVP_VAL(tp, CBSP_IEI_CELL_LIST), |
| 907 | TLVP_LEN(tp, CBSP_IEI_CELL_LIST)); |
| 908 | |
| 909 | out->channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 910 | return 0; |
| 911 | } |
| 912 | |
| 913 | /* 8.1.3.8 LOAD QUERY COMPLETE */ |
| 914 | static int cbsp_dec_load_query_compl(struct osmo_cbsp_load_query_complete *out, |
| 915 | const struct tlv_parsed *tp, struct msgb *in, void *ctx) |
| 916 | { |
| 917 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_RR_LOADING_LIST, 6) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 918 | !TLVP_PRES_LEN(tp, CBSP_IEI_CHANNEL_IND, 1)) { |
| 919 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 920 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 921 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 922 | |
| 923 | INIT_LLIST_HEAD(&out->loading_list.list); |
| 924 | cbsp_decode_loading_list(&out->loading_list, ctx, |
| 925 | TLVP_VAL(tp, CBSP_IEI_RR_LOADING_LIST), |
| 926 | TLVP_LEN(tp, CBSP_IEI_RR_LOADING_LIST)); |
| 927 | |
| 928 | out->channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 929 | return 0; |
| 930 | } |
| 931 | |
| 932 | /* 8.1.3.9 LOAD QUERY FAILURE */ |
| 933 | static int cbsp_dec_load_query_fail(struct osmo_cbsp_load_query_failure *out, |
| 934 | const struct tlv_parsed *tp, struct msgb *in, void *ctx) |
| 935 | { |
| 936 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_FAILURE_LIST, 5) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 937 | !TLVP_PRES_LEN(tp, CBSP_IEI_CHANNEL_IND, 1)) { |
| 938 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 939 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 940 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 941 | |
| 942 | INIT_LLIST_HEAD(&out->fail_list); |
| 943 | cbsp_decode_fail_list(&out->fail_list, ctx, |
| 944 | TLVP_VAL(tp, CBSP_IEI_FAILURE_LIST), |
| 945 | TLVP_LEN(tp, CBSP_IEI_FAILURE_LIST)); |
| 946 | |
| 947 | out->channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 948 | |
| 949 | INIT_LLIST_HEAD(&out->loading_list.list); |
| 950 | if (TLVP_PRES_LEN(tp, CBSP_IEI_RR_LOADING_LIST, 6)) { |
| 951 | cbsp_decode_loading_list(&out->loading_list, ctx, |
| 952 | TLVP_VAL(tp, CBSP_IEI_RR_LOADING_LIST), |
| 953 | TLVP_LEN(tp, CBSP_IEI_RR_LOADING_LIST)); |
| 954 | } |
| 955 | return 0; |
| 956 | } |
| 957 | |
| 958 | /* 8.1.3.10 STATUS QUERY */ |
| 959 | static int cbsp_dec_msg_status_query(struct osmo_cbsp_msg_status_query *out, |
| 960 | const struct tlv_parsed *tp, struct msgb *in, void *ctx) |
| 961 | { |
| 962 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_MSG_ID, 2) || |
| 963 | !TLVP_PRES_LEN(tp, CBSP_IEI_OLD_SERIAL_NR, 2) || |
| 964 | !TLVP_PRES_LEN(tp, CBSP_IEI_CELL_LIST, 1) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 965 | !TLVP_PRES_LEN(tp, CBSP_IEI_CHANNEL_IND, 1)) { |
| 966 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 967 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 968 | } |
| 969 | |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 970 | out->msg_id = tlvp_val16be(tp, CBSP_IEI_MSG_ID); |
| 971 | out->old_serial_nr = tlvp_val16be(tp, CBSP_IEI_OLD_SERIAL_NR); |
| 972 | |
| 973 | INIT_LLIST_HEAD(&out->cell_list.list); |
| 974 | cbsp_decode_cell_list(&out->cell_list, ctx, TLVP_VAL(tp, CBSP_IEI_CELL_LIST), |
| 975 | TLVP_LEN(tp, CBSP_IEI_CELL_LIST)); |
| 976 | |
| 977 | out->channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 978 | return 0; |
| 979 | } |
| 980 | |
| 981 | /* 8.1.3.11 STATUS QUERY COMPLETE */ |
| 982 | static int cbsp_dec_msg_status_query_compl(struct osmo_cbsp_msg_status_query_complete *out, |
| 983 | const struct tlv_parsed *tp, struct msgb *in, void *ctx) |
| 984 | { |
| 985 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_MSG_ID, 2) || |
| 986 | !TLVP_PRES_LEN(tp, CBSP_IEI_OLD_SERIAL_NR, 2) || |
| 987 | !TLVP_PRES_LEN(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST, 7) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 988 | !TLVP_PRES_LEN(tp, CBSP_IEI_CHANNEL_IND, 1)) { |
| 989 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 990 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 991 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 992 | |
| 993 | out->msg_id = tlvp_val16be(tp, CBSP_IEI_MSG_ID); |
| 994 | out->old_serial_nr = tlvp_val16be(tp, CBSP_IEI_OLD_SERIAL_NR); |
| 995 | |
| 996 | INIT_LLIST_HEAD(&out->num_compl_list.list); |
| 997 | cbsp_decode_num_compl_list(&out->num_compl_list, ctx, |
| 998 | TLVP_VAL(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST), |
| 999 | TLVP_LEN(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST)); |
| 1000 | out->channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 1001 | return 0; |
| 1002 | } |
| 1003 | |
| 1004 | /* 8.1.3.12 STATUS QUERY FAILURE */ |
| 1005 | static int cbsp_dec_msg_status_query_fail(struct osmo_cbsp_msg_status_query_failure *out, |
| 1006 | const struct tlv_parsed *tp, struct msgb *in, void *ctx) |
| 1007 | { |
| 1008 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_MSG_ID, 2) || |
| 1009 | !TLVP_PRES_LEN(tp, CBSP_IEI_OLD_SERIAL_NR, 2) || |
| 1010 | !TLVP_PRES_LEN(tp, CBSP_IEI_FAILURE_LIST, 5) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1011 | !TLVP_PRES_LEN(tp, CBSP_IEI_CHANNEL_IND, 1)) { |
| 1012 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1013 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1014 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1015 | |
| 1016 | out->msg_id = tlvp_val16be(tp, CBSP_IEI_MSG_ID); |
| 1017 | out->old_serial_nr = tlvp_val16be(tp, CBSP_IEI_OLD_SERIAL_NR); |
| 1018 | |
| 1019 | INIT_LLIST_HEAD(&out->fail_list); |
| 1020 | cbsp_decode_fail_list(&out->fail_list, ctx, |
| 1021 | TLVP_VAL(tp, CBSP_IEI_FAILURE_LIST), |
| 1022 | TLVP_LEN(tp, CBSP_IEI_FAILURE_LIST)); |
| 1023 | |
| 1024 | out->channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 1025 | |
| 1026 | INIT_LLIST_HEAD(&out->num_compl_list.list); |
| 1027 | if (TLVP_PRES_LEN(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST, 7)) { |
| 1028 | cbsp_decode_num_compl_list(&out->num_compl_list, ctx, |
| 1029 | TLVP_VAL(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST), |
| 1030 | TLVP_LEN(tp, CBSP_IEI_NUM_BCAST_COMPL_LIST)); |
| 1031 | } |
| 1032 | return 0; |
| 1033 | } |
| 1034 | |
| 1035 | /* 8.1.3.16 RESET */ |
| 1036 | static int cbsp_dec_reset(struct osmo_cbsp_reset *out, const struct tlv_parsed *tp, |
| 1037 | struct msgb *in, void *ctx) |
| 1038 | { |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1039 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_CELL_LIST, 1)) { |
| 1040 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1041 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1042 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1043 | |
| 1044 | INIT_LLIST_HEAD(&out->cell_list.list); |
| 1045 | cbsp_decode_cell_list(&out->cell_list, ctx, TLVP_VAL(tp, CBSP_IEI_CELL_LIST), |
| 1046 | TLVP_LEN(tp, CBSP_IEI_CELL_LIST)); |
| 1047 | return 0; |
| 1048 | } |
| 1049 | |
| 1050 | /* 8.1.3.17 RESET COMPLETE */ |
| 1051 | static int cbsp_dec_reset_compl(struct osmo_cbsp_reset_complete *out, const struct tlv_parsed *tp, |
| 1052 | struct msgb *in, void *ctx) |
| 1053 | { |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1054 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_CELL_LIST, 1)) { |
| 1055 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1056 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1057 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1058 | |
| 1059 | INIT_LLIST_HEAD(&out->cell_list.list); |
| 1060 | cbsp_decode_cell_list(&out->cell_list, ctx, TLVP_VAL(tp, CBSP_IEI_CELL_LIST), |
| 1061 | TLVP_LEN(tp, CBSP_IEI_CELL_LIST)); |
| 1062 | return 0; |
| 1063 | } |
| 1064 | |
| 1065 | /* 8.1.3.18 RESET FAILURE */ |
| 1066 | static int cbsp_dec_reset_fail(struct osmo_cbsp_reset_failure *out, const struct tlv_parsed *tp, |
| 1067 | struct msgb *in, void *ctx) |
| 1068 | { |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1069 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_FAILURE_LIST, 5)) { |
| 1070 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1071 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1072 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1073 | |
| 1074 | INIT_LLIST_HEAD(&out->fail_list); |
| 1075 | cbsp_decode_fail_list(&out->fail_list, ctx, |
| 1076 | TLVP_VAL(tp, CBSP_IEI_FAILURE_LIST), |
| 1077 | TLVP_LEN(tp, CBSP_IEI_FAILURE_LIST)); |
| 1078 | |
| 1079 | INIT_LLIST_HEAD(&out->cell_list.list); |
| 1080 | if (TLVP_PRES_LEN(tp, CBSP_IEI_CELL_LIST, 1)) { |
| 1081 | cbsp_decode_cell_list(&out->cell_list, ctx, TLVP_VAL(tp, CBSP_IEI_CELL_LIST), |
| 1082 | TLVP_LEN(tp, CBSP_IEI_CELL_LIST)); |
| 1083 | } |
| 1084 | return 0; |
| 1085 | } |
| 1086 | |
| 1087 | /* 8.1.3.18a KEEP ALIVE */ |
| 1088 | static int cbsp_dec_keep_alive(struct osmo_cbsp_keep_alive *out, const struct tlv_parsed *tp, |
| 1089 | struct msgb *in, void *ctx) |
| 1090 | { |
Harald Welte | 48f22b0 | 2021-02-22 09:55:44 +0100 | [diff] [blame] | 1091 | uint8_t rperiod; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1092 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_KEEP_ALIVE_REP_PERIOD, 1)) { |
| 1093 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1094 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1095 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1096 | |
Harald Welte | 48f22b0 | 2021-02-22 09:55:44 +0100 | [diff] [blame] | 1097 | rperiod = *TLVP_VAL(tp, CBSP_IEI_KEEP_ALIVE_REP_PERIOD); |
| 1098 | out->repetition_period = decode_wperiod(rperiod); |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1099 | return 0; |
| 1100 | } |
| 1101 | |
| 1102 | /* 8.1.3.18b KEEP ALIVE COMPLETE */ |
| 1103 | static int cbsp_dec_keep_alive_compl(struct osmo_cbsp_keep_alive_complete *out, |
| 1104 | const struct tlv_parsed *tp, struct msgb *in, void *ctx) |
| 1105 | { |
| 1106 | return 0; |
| 1107 | } |
| 1108 | |
| 1109 | /* 8.1.3.19 RESTART */ |
| 1110 | static int cbsp_dec_restart(struct osmo_cbsp_restart *out, const struct tlv_parsed *tp, |
| 1111 | struct msgb *in, void *ctx) |
| 1112 | { |
| 1113 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_CELL_LIST, 1) || |
| 1114 | !TLVP_PRES_LEN(tp, CBSP_IEI_BCAST_MSG_TYPE, 1) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1115 | !TLVP_PRES_LEN(tp, CBSP_IEI_RECOVERY_IND, 1)) { |
| 1116 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1117 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1118 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1119 | |
| 1120 | INIT_LLIST_HEAD(&out->cell_list.list); |
| 1121 | cbsp_decode_cell_list(&out->cell_list, ctx, TLVP_VAL(tp, CBSP_IEI_CELL_LIST), |
| 1122 | TLVP_LEN(tp, CBSP_IEI_CELL_LIST)); |
| 1123 | |
| 1124 | out->bcast_msg_type = *TLVP_VAL(tp, CBSP_IEI_BCAST_MSG_TYPE); |
| 1125 | out->recovery_ind = *TLVP_VAL(tp, CBSP_IEI_RECOVERY_IND); |
| 1126 | return 0; |
| 1127 | } |
| 1128 | |
| 1129 | /* 8.1.3.20 FAILURE */ |
| 1130 | static int cbsp_dec_failure(struct osmo_cbsp_failure *out, const struct tlv_parsed *tp, |
| 1131 | struct msgb *in, void *ctx) |
| 1132 | { |
| 1133 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_FAILURE_LIST, 5) || |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1134 | !TLVP_PRES_LEN(tp, CBSP_IEI_BCAST_MSG_TYPE, 1)) { |
| 1135 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1136 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1137 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1138 | |
| 1139 | INIT_LLIST_HEAD(&out->fail_list); |
| 1140 | cbsp_decode_fail_list(&out->fail_list, ctx, |
| 1141 | TLVP_VAL(tp, CBSP_IEI_FAILURE_LIST), |
| 1142 | TLVP_LEN(tp, CBSP_IEI_FAILURE_LIST)); |
| 1143 | |
| 1144 | out->bcast_msg_type = *TLVP_VAL(tp, CBSP_IEI_BCAST_MSG_TYPE); |
| 1145 | return 0; |
| 1146 | } |
| 1147 | |
| 1148 | /* 8.1.3.21 ERROR INDICATION */ |
| 1149 | static int cbsp_dec_error_ind(struct osmo_cbsp_error_ind *out, const struct tlv_parsed *tp, |
| 1150 | struct msgb *in, void *ctx) |
| 1151 | { |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1152 | if (!TLVP_PRES_LEN(tp, CBSP_IEI_CAUSE, 1)) { |
| 1153 | osmo_cbsp_errstr = "missing/short mandatory IE"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1154 | return -EINVAL; |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1155 | } |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1156 | |
| 1157 | out->cause = *TLVP_VAL(tp, CBSP_IEI_CAUSE); |
| 1158 | if (TLVP_PRES_LEN(tp, CBSP_IEI_MSG_ID, 2)) { |
| 1159 | out->msg_id = talloc(ctx, uint16_t); |
| 1160 | *out->msg_id = tlvp_val16be(tp, CBSP_IEI_MSG_ID); |
| 1161 | } |
| 1162 | if (TLVP_PRES_LEN(tp, CBSP_IEI_NEW_SERIAL_NR, 2)) { |
| 1163 | out->new_serial_nr = talloc(ctx, uint16_t); |
| 1164 | *out->new_serial_nr = tlvp_val16be(tp, CBSP_IEI_NEW_SERIAL_NR); |
| 1165 | } |
| 1166 | if (TLVP_PRES_LEN(tp, CBSP_IEI_OLD_SERIAL_NR, 2)) { |
| 1167 | out->old_serial_nr = talloc(ctx, uint16_t); |
| 1168 | *out->old_serial_nr = tlvp_val16be(tp, CBSP_IEI_OLD_SERIAL_NR); |
| 1169 | } |
| 1170 | if (TLVP_PRES_LEN(tp, CBSP_IEI_CHANNEL_IND, 1)) { |
| 1171 | out->channel_ind = talloc(ctx, enum cbsp_channel_ind); |
| 1172 | *out->channel_ind = *TLVP_VAL(tp, CBSP_IEI_CHANNEL_IND); |
| 1173 | } |
| 1174 | return 0; |
| 1175 | } |
| 1176 | |
| 1177 | /*! Decode a CBSP message from wire formwat to pased structure. |
| 1178 | * \param[in] ctx talloc context from which to allocate decoded output. |
| 1179 | * \param[in] in message buffer contiaining binary CBSP message. |
| 1180 | * \returns callee-allocated decoded representation of CBSP message; NULL on error */ |
| 1181 | struct osmo_cbsp_decoded *osmo_cbsp_decode(void *ctx, struct msgb *in) |
| 1182 | { |
| 1183 | struct osmo_cbsp_decoded *out = talloc_zero(ctx, struct osmo_cbsp_decoded); |
| 1184 | const struct cbsp_header *h = msgb_l1(in); |
| 1185 | struct tlv_parsed tp[16]; /* max. number of pages in a given CBS message */ |
| 1186 | unsigned int len; |
| 1187 | int rc; |
| 1188 | |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1189 | osmo_cbsp_errstr = NULL; |
| 1190 | |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1191 | if (!out) |
| 1192 | return NULL; |
| 1193 | |
| 1194 | if (msgb_l1len(in) < sizeof(*h)) { |
| 1195 | goto out_err; |
| 1196 | } |
| 1197 | len = h->len[0] << 16 | h->len[1] << 8 | h->len[2]; |
| 1198 | |
| 1199 | /* discard messages where indicated length is more than we have */ |
| 1200 | if (len > msgb_l2len(in)) { |
| 1201 | goto out_err; |
| 1202 | } |
| 1203 | |
| 1204 | /* trim any messages with extra payload at the end */ |
| 1205 | if (len < msgb_l2len(in)) |
| 1206 | msgb_trim(in, (in->l2h - in->data) + msgb_l2len(in)); |
| 1207 | out->msg_type = h->msg_type; |
| 1208 | |
| 1209 | rc = tlv_parse2(tp, ARRAY_SIZE(tp), &cbsp_att_tlvdef, msgb_l2(in), msgb_l2len(in), 0, 0); |
| 1210 | if (rc < 0) { |
| 1211 | goto out_err; |
| 1212 | } |
| 1213 | |
| 1214 | switch (h->msg_type) { |
| 1215 | case CBSP_MSGT_WRITE_REPLACE: |
| 1216 | rc = cbsp_dec_write_repl(&out->u.write_replace, tp, in, out); |
| 1217 | break; |
| 1218 | case CBSP_MSGT_WRITE_REPLACE_COMPL: |
| 1219 | rc = cbsp_dec_write_repl_compl(&out->u.write_replace_compl, tp, in, out); |
| 1220 | break; |
| 1221 | case CBSP_MSGT_WRITE_REPLACE_FAIL: |
| 1222 | rc = cbsp_dec_write_repl_fail(&out->u.write_replace_fail, tp, in, out); |
| 1223 | break; |
| 1224 | case CBSP_MSGT_KILL: |
| 1225 | rc = cbsp_dec_kill(&out->u.kill, tp, in, out); |
| 1226 | break; |
| 1227 | case CBSP_MSGT_KILL_COMPL: |
| 1228 | rc = cbsp_dec_kill_compl(&out->u.kill_compl, tp, in, out); |
| 1229 | break; |
| 1230 | case CBSP_MSGT_KILL_FAIL: |
| 1231 | rc = cbsp_dec_kill_fail(&out->u.kill_fail, tp, in, out); |
| 1232 | break; |
| 1233 | case CBSP_MSGT_LOAD_QUERY: |
| 1234 | rc = cbsp_dec_load_query(&out->u.load_query, tp, in, out); |
| 1235 | break; |
| 1236 | case CBSP_MSGT_LOAD_QUERY_COMPL: |
| 1237 | rc = cbsp_dec_load_query_compl(&out->u.load_query_compl, tp, in, out); |
| 1238 | break; |
| 1239 | case CBSP_MSGT_LOAD_QUERY_FAIL: |
| 1240 | rc = cbsp_dec_load_query_fail(&out->u.load_query_fail, tp, in, out); |
| 1241 | break; |
| 1242 | case CBSP_MSGT_MSG_STATUS_QUERY: |
| 1243 | rc = cbsp_dec_msg_status_query(&out->u.msg_status_query, tp, in, out); |
| 1244 | break; |
| 1245 | case CBSP_MSGT_MSG_STATUS_QUERY_COMPL: |
| 1246 | rc = cbsp_dec_msg_status_query_compl(&out->u.msg_status_query_compl, tp, in, out); |
| 1247 | break; |
| 1248 | case CBSP_MSGT_MSG_STATUS_QUERY_FAIL: |
| 1249 | rc = cbsp_dec_msg_status_query_fail(&out->u.msg_status_query_fail, tp, in, out); |
| 1250 | break; |
| 1251 | case CBSP_MSGT_RESET: |
| 1252 | rc = cbsp_dec_reset(&out->u.reset, tp, in, out); |
| 1253 | break; |
| 1254 | case CBSP_MSGT_RESET_COMPL: |
| 1255 | rc = cbsp_dec_reset_compl(&out->u.reset_compl, tp, in, out); |
| 1256 | break; |
| 1257 | case CBSP_MSGT_RESET_FAIL: |
| 1258 | rc = cbsp_dec_reset_fail(&out->u.reset_fail, tp, in, out); |
| 1259 | break; |
| 1260 | case CBSP_MSGT_RESTART: |
| 1261 | rc = cbsp_dec_restart(&out->u.restart, tp, in, out); |
| 1262 | break; |
| 1263 | case CBSP_MSGT_FAILURE: |
| 1264 | rc = cbsp_dec_failure(&out->u.failure, tp, in, out); |
| 1265 | break; |
| 1266 | case CBSP_MSGT_ERROR_IND: |
| 1267 | rc = cbsp_dec_error_ind(&out->u.error_ind, tp, in, out); |
| 1268 | break; |
| 1269 | case CBSP_MSGT_KEEP_ALIVE: |
| 1270 | rc = cbsp_dec_keep_alive(&out->u.keep_alive, tp, in, out); |
| 1271 | break; |
| 1272 | case CBSP_MSGT_KEEP_ALIVE_COMPL: |
| 1273 | rc = cbsp_dec_keep_alive_compl(&out->u.keep_alive_compl, tp, in, out); |
| 1274 | break; |
| 1275 | case CBSP_MSGT_SET_DRX: |
| 1276 | case CBSP_MSGT_SET_DRX_COMPL: |
| 1277 | case CBSP_MSGT_SET_DRX_FAIL: |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1278 | osmo_cbsp_errstr = "message type not implemented"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1279 | rc = -1; |
| 1280 | break; |
| 1281 | default: |
Harald Welte | f72155a | 2019-06-15 23:05:19 +0200 | [diff] [blame] | 1282 | osmo_cbsp_errstr = "message type not known in spec"; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1283 | rc = -1; |
| 1284 | break; |
| 1285 | } |
| 1286 | |
| 1287 | if (rc < 0) { |
| 1288 | goto out_err; |
| 1289 | } |
| 1290 | |
| 1291 | return out; |
| 1292 | |
| 1293 | out_err: |
| 1294 | talloc_free(out); |
| 1295 | return NULL; |
| 1296 | } |
| 1297 | |
| 1298 | /* initialization of 'decoded' structure of given message type */ |
| 1299 | void osmo_cbsp_init_struct(struct osmo_cbsp_decoded *cbsp, enum cbsp_msg_type msg_type) |
| 1300 | { |
| 1301 | memset(cbsp, 0, sizeof(*cbsp)); |
| 1302 | cbsp->msg_type = msg_type; |
| 1303 | |
| 1304 | switch (msg_type) { |
| 1305 | case CBSP_MSGT_WRITE_REPLACE: |
| 1306 | INIT_LLIST_HEAD(&cbsp->u.write_replace.cell_list.list); |
| 1307 | break; |
| 1308 | case CBSP_MSGT_WRITE_REPLACE_COMPL: |
| 1309 | INIT_LLIST_HEAD(&cbsp->u.write_replace_compl.num_compl_list.list); |
| 1310 | INIT_LLIST_HEAD(&cbsp->u.write_replace_compl.cell_list.list); |
| 1311 | break; |
| 1312 | case CBSP_MSGT_WRITE_REPLACE_FAIL: |
| 1313 | INIT_LLIST_HEAD(&cbsp->u.write_replace_fail.fail_list); |
| 1314 | INIT_LLIST_HEAD(&cbsp->u.write_replace_fail.num_compl_list.list); |
| 1315 | INIT_LLIST_HEAD(&cbsp->u.write_replace_fail.cell_list.list); |
| 1316 | break; |
| 1317 | case CBSP_MSGT_KILL: |
| 1318 | INIT_LLIST_HEAD(&cbsp->u.kill.cell_list.list); |
| 1319 | break; |
| 1320 | case CBSP_MSGT_KILL_COMPL: |
| 1321 | INIT_LLIST_HEAD(&cbsp->u.kill_compl.num_compl_list.list); |
| 1322 | INIT_LLIST_HEAD(&cbsp->u.kill_compl.cell_list.list); |
| 1323 | break; |
| 1324 | case CBSP_MSGT_KILL_FAIL: |
| 1325 | INIT_LLIST_HEAD(&cbsp->u.kill_fail.fail_list); |
| 1326 | INIT_LLIST_HEAD(&cbsp->u.kill_fail.num_compl_list.list); |
| 1327 | INIT_LLIST_HEAD(&cbsp->u.kill_fail.cell_list.list); |
| 1328 | break; |
| 1329 | case CBSP_MSGT_LOAD_QUERY: |
| 1330 | INIT_LLIST_HEAD(&cbsp->u.load_query.cell_list.list); |
| 1331 | break; |
| 1332 | case CBSP_MSGT_LOAD_QUERY_COMPL: |
| 1333 | INIT_LLIST_HEAD(&cbsp->u.load_query_compl.loading_list.list); |
| 1334 | break; |
| 1335 | case CBSP_MSGT_LOAD_QUERY_FAIL: |
| 1336 | INIT_LLIST_HEAD(&cbsp->u.load_query_fail.fail_list); |
| 1337 | break; |
| 1338 | case CBSP_MSGT_MSG_STATUS_QUERY: |
| 1339 | INIT_LLIST_HEAD(&cbsp->u.msg_status_query.cell_list.list); |
| 1340 | break; |
| 1341 | case CBSP_MSGT_MSG_STATUS_QUERY_COMPL: |
| 1342 | INIT_LLIST_HEAD(&cbsp->u.msg_status_query_compl.num_compl_list.list); |
| 1343 | break; |
| 1344 | case CBSP_MSGT_MSG_STATUS_QUERY_FAIL: |
| 1345 | INIT_LLIST_HEAD(&cbsp->u.msg_status_query_fail.fail_list); |
| 1346 | INIT_LLIST_HEAD(&cbsp->u.msg_status_query_fail.num_compl_list.list); |
| 1347 | break; |
| 1348 | case CBSP_MSGT_RESET: |
| 1349 | INIT_LLIST_HEAD(&cbsp->u.reset.cell_list.list); |
| 1350 | break; |
| 1351 | case CBSP_MSGT_RESET_COMPL: |
| 1352 | INIT_LLIST_HEAD(&cbsp->u.reset_compl.cell_list.list); |
| 1353 | break; |
| 1354 | case CBSP_MSGT_RESET_FAIL: |
| 1355 | INIT_LLIST_HEAD(&cbsp->u.reset_fail.fail_list); |
| 1356 | INIT_LLIST_HEAD(&cbsp->u.reset_fail.cell_list.list); |
| 1357 | break; |
| 1358 | case CBSP_MSGT_RESTART: |
| 1359 | INIT_LLIST_HEAD(&cbsp->u.restart.cell_list.list); |
| 1360 | break; |
| 1361 | case CBSP_MSGT_FAILURE: |
| 1362 | INIT_LLIST_HEAD(&cbsp->u.failure.fail_list); |
| 1363 | break; |
| 1364 | default: |
| 1365 | break; |
| 1366 | } |
| 1367 | } |
| 1368 | |
| 1369 | /*! Dynamically allocate and initialize decoded CBSP structure. |
| 1370 | * \param[in] ctx talloc context from which to allocate |
| 1371 | * \param[in] msg_type CBSP message type for which to initialize result |
| 1372 | * \returns allocated + initialized decoded CBSP structure; NULL on talloc failure */ |
| 1373 | struct osmo_cbsp_decoded *osmo_cbsp_decoded_alloc(void *ctx, enum cbsp_msg_type msg_type) |
| 1374 | { |
| 1375 | struct osmo_cbsp_decoded *cbsp = talloc_zero(ctx, struct osmo_cbsp_decoded); |
| 1376 | if (!cbsp) |
| 1377 | return NULL; |
| 1378 | osmo_cbsp_init_struct(cbsp, msg_type); |
| 1379 | return cbsp; |
| 1380 | } |
| 1381 | |
| 1382 | /*********************************************************************** |
| 1383 | * Message Reception |
| 1384 | ***********************************************************************/ |
| 1385 | |
| 1386 | #ifdef HAVE_SYS_SOCKET_H |
| 1387 | #include <sys/socket.h> |
| 1388 | |
| 1389 | /*! Read one CBSP message from socket fd or store part if still not fully received. |
| 1390 | * \param[in] ctx talloc context from which to allocate new msgb. |
| 1391 | * \param[in] fd The fd for the socket to read from. |
| 1392 | * \param[out] rmsg internally allocated msgb containing a fully received CBSP message. |
| 1393 | * \param[inout] tmp_msg internally allocated msgb caching data for not yet fully received message. |
| 1394 | * |
| 1395 | * Function is designed just like ipa_msg_recv_buffered() |
| 1396 | */ |
| 1397 | int osmo_cbsp_recv_buffered(void *ctx, int fd, struct msgb **rmsg, struct msgb **tmp_msg) |
| 1398 | { |
| 1399 | struct msgb *msg = tmp_msg ? *tmp_msg : NULL; |
| 1400 | struct cbsp_header *h; |
| 1401 | int len, rc; |
| 1402 | int needed; |
| 1403 | |
| 1404 | if (!msg) { |
| 1405 | msg = osmo_cbsp_msgb_alloc(ctx, __func__); |
Harald Welte | c30d8be | 2019-07-21 07:51:33 +0200 | [diff] [blame] | 1406 | if (!msg) |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1407 | return -ENOMEM; |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1408 | msg->l1h = msg->tail; |
| 1409 | } |
| 1410 | |
| 1411 | if (msg->l2h == NULL) { |
| 1412 | /* first read the [missing part of the] header */ |
| 1413 | needed = sizeof(*h) - msg->len; |
| 1414 | rc = recv(fd, msg->tail, needed, 0); |
| 1415 | if (rc == 0) |
| 1416 | goto discard_msg; |
| 1417 | else if (rc < 0) { |
| 1418 | if (errno == EAGAIN || errno == EINTR) |
| 1419 | rc = 0; |
| 1420 | else { |
| 1421 | rc = -errno; |
| 1422 | goto discard_msg; |
| 1423 | } |
| 1424 | } |
| 1425 | msgb_put(msg, rc); |
| 1426 | if (rc < needed) { |
| 1427 | if (msg->len == 0) { |
| 1428 | rc = -EAGAIN; |
| 1429 | goto discard_msg; |
| 1430 | } |
| 1431 | |
| 1432 | if (!tmp_msg) { |
| 1433 | rc = -EIO; |
| 1434 | goto discard_msg; |
| 1435 | } |
| 1436 | *tmp_msg = msg; |
| 1437 | return -EAGAIN; |
| 1438 | } |
| 1439 | msg->l2h = msg->tail; |
| 1440 | } |
| 1441 | |
| 1442 | h = (struct cbsp_header *) msg->data; |
| 1443 | /* then read the length as specified in the header */ |
| 1444 | len = h->len[0] << 16 | h->len[1] << 8 | h->len[2]; |
| 1445 | |
| 1446 | needed = len - msgb_l2len(msg); |
| 1447 | if (needed > 0) { |
| 1448 | rc = recv(fd, msg->tail, needed, 0); |
| 1449 | if (rc == 0) |
| 1450 | goto discard_msg; |
| 1451 | else if (rc < 0) { |
| 1452 | if (errno == EAGAIN || errno == EINTR) |
| 1453 | rc = 0; |
| 1454 | else { |
| 1455 | rc = -errno; |
| 1456 | goto discard_msg; |
| 1457 | } |
| 1458 | } |
| 1459 | msgb_put(msg, rc); |
| 1460 | /* still not all of payload received? */ |
| 1461 | if (rc < needed) { |
| 1462 | if (!tmp_msg) { |
| 1463 | rc = -EIO; |
| 1464 | goto discard_msg; |
| 1465 | } |
| 1466 | *tmp_msg = msg; |
| 1467 | return -EAGAIN; |
| 1468 | } |
| 1469 | } |
| 1470 | /* else: complete message received */ |
Harald Welte | fdd71c8 | 2021-01-02 20:50:47 +0100 | [diff] [blame] | 1471 | rc = msgb_length(msg); |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1472 | if (tmp_msg) |
| 1473 | *tmp_msg = NULL; |
| 1474 | *rmsg = msg; |
| 1475 | return rc; |
| 1476 | |
| 1477 | discard_msg: |
Harald Welte | 07958e4 | 2019-05-03 09:39:10 +0200 | [diff] [blame] | 1478 | if (tmp_msg) |
| 1479 | *tmp_msg = NULL; |
| 1480 | msgb_free(msg); |
| 1481 | return rc; |
| 1482 | } |
| 1483 | |
| 1484 | #endif /* HAVE_SYS_SOCKET_H */ |