Harald Welte | 1e90866 | 2010-03-07 23:39:54 +0100 | [diff] [blame] | 1 | /* GSM Mobile Radio Interface Layer 3 messages |
| 2 | * 3GPP TS 04.08 version 7.21.0 Release 1998 / ETSI TS 100 940 V7.21.0 */ |
| 3 | |
| 4 | /* (C) 2008 by Harald Welte <laforge@gnumonks.org> |
Harald Welte | b1ac2b9 | 2010-04-09 07:50:18 +0200 | [diff] [blame] | 5 | * (C) 2009-2010 by Andreas Eversberg |
Harald Welte | 1e90866 | 2010-03-07 23:39:54 +0100 | [diff] [blame] | 6 | * |
| 7 | * All Rights Reserved |
| 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 | |
| 25 | |
| 26 | #include <stdint.h> |
| 27 | #include <string.h> |
| 28 | #include <errno.h> |
| 29 | |
Pablo Neira Ayuso | 8341934 | 2011-03-22 16:36:13 +0100 | [diff] [blame] | 30 | #include <osmocom/core/utils.h> |
| 31 | #include <osmocom/core/msgb.h> |
| 32 | #include <osmocom/gsm/tlv.h> |
| 33 | #include <osmocom/gsm/mncc.h> |
| 34 | #include <osmocom/gsm/protocol/gsm_04_08.h> |
| 35 | #include <osmocom/gsm/gsm48_ie.h> |
Harald Welte | 1e90866 | 2010-03-07 23:39:54 +0100 | [diff] [blame] | 36 | |
| 37 | static const char bcd_num_digits[] = { |
| 38 | '0', '1', '2', '3', '4', '5', '6', '7', |
| 39 | '8', '9', '*', '#', 'a', 'b', 'c', '\0' |
| 40 | }; |
| 41 | |
| 42 | /* decode a 'called/calling/connect party BCD number' as in 10.5.4.7 */ |
| 43 | int gsm48_decode_bcd_number(char *output, int output_len, |
| 44 | const uint8_t *bcd_lv, int h_len) |
| 45 | { |
| 46 | uint8_t in_len = bcd_lv[0]; |
| 47 | int i; |
| 48 | |
| 49 | for (i = 1 + h_len; i <= in_len; i++) { |
| 50 | /* lower nibble */ |
| 51 | output_len--; |
| 52 | if (output_len <= 1) |
| 53 | break; |
| 54 | *output++ = bcd_num_digits[bcd_lv[i] & 0xf]; |
| 55 | |
| 56 | /* higher nibble */ |
| 57 | output_len--; |
| 58 | if (output_len <= 1) |
| 59 | break; |
| 60 | *output++ = bcd_num_digits[bcd_lv[i] >> 4]; |
| 61 | } |
| 62 | if (output_len >= 1) |
| 63 | *output++ = '\0'; |
| 64 | |
| 65 | return 0; |
| 66 | } |
| 67 | |
| 68 | /* convert a single ASCII character to call-control BCD */ |
| 69 | static int asc_to_bcd(const char asc) |
| 70 | { |
| 71 | int i; |
| 72 | |
| 73 | for (i = 0; i < ARRAY_SIZE(bcd_num_digits); i++) { |
| 74 | if (bcd_num_digits[i] == asc) |
| 75 | return i; |
| 76 | } |
| 77 | return -EINVAL; |
| 78 | } |
| 79 | |
| 80 | /* convert a ASCII phone number to 'called/calling/connect party BCD number' */ |
| 81 | int gsm48_encode_bcd_number(uint8_t *bcd_lv, uint8_t max_len, |
| 82 | int h_len, const char *input) |
| 83 | { |
| 84 | int in_len = strlen(input); |
| 85 | int i; |
| 86 | uint8_t *bcd_cur = bcd_lv + 1 + h_len; |
| 87 | |
| 88 | /* two digits per byte, plus type byte */ |
| 89 | bcd_lv[0] = in_len/2 + h_len; |
| 90 | if (in_len % 2) |
| 91 | bcd_lv[0]++; |
| 92 | |
| 93 | if (bcd_lv[0] > max_len) |
| 94 | return -EIO; |
| 95 | |
| 96 | for (i = 0; i < in_len; i++) { |
| 97 | int rc = asc_to_bcd(input[i]); |
| 98 | if (rc < 0) |
| 99 | return rc; |
| 100 | if (i % 2 == 0) |
| 101 | *bcd_cur = rc; |
| 102 | else |
| 103 | *bcd_cur++ |= (rc << 4); |
| 104 | } |
| 105 | /* append padding nibble in case of odd length */ |
| 106 | if (i % 2) |
| 107 | *bcd_cur++ |= 0xf0; |
| 108 | |
| 109 | /* return how many bytes we used */ |
| 110 | return (bcd_cur - bcd_lv); |
| 111 | } |
| 112 | |
| 113 | /* decode 'bearer capability' */ |
| 114 | int gsm48_decode_bearer_cap(struct gsm_mncc_bearer_cap *bcap, |
| 115 | const uint8_t *lv) |
| 116 | { |
| 117 | uint8_t in_len = lv[0]; |
| 118 | int i, s; |
| 119 | |
| 120 | if (in_len < 1) |
| 121 | return -EINVAL; |
| 122 | |
| 123 | bcap->speech_ver[0] = -1; /* end of list, of maximum 7 values */ |
| 124 | |
| 125 | /* octet 3 */ |
| 126 | bcap->transfer = lv[1] & 0x07; |
| 127 | bcap->mode = (lv[1] & 0x08) >> 3; |
| 128 | bcap->coding = (lv[1] & 0x10) >> 4; |
| 129 | bcap->radio = (lv[1] & 0x60) >> 5; |
| 130 | |
| 131 | if (bcap->transfer == GSM_MNCC_BCAP_SPEECH) { |
| 132 | i = 1; |
| 133 | s = 0; |
| 134 | while(!(lv[i] & 0x80)) { |
| 135 | i++; /* octet 3a etc */ |
| 136 | if (in_len < i) |
| 137 | return 0; |
| 138 | bcap->speech_ver[s++] = lv[i] & 0x0f; |
| 139 | bcap->speech_ver[s] = -1; /* end of list */ |
| 140 | if (i == 2) /* octet 3a */ |
| 141 | bcap->speech_ctm = (lv[i] & 0x20) >> 5; |
| 142 | if (s == 7) /* maximum speech versions + end of list */ |
| 143 | return 0; |
| 144 | } |
| 145 | } else { |
| 146 | i = 1; |
| 147 | while (!(lv[i] & 0x80)) { |
| 148 | i++; /* octet 3a etc */ |
| 149 | if (in_len < i) |
| 150 | return 0; |
| 151 | /* ignore them */ |
| 152 | } |
| 153 | /* FIXME: implement OCTET 4+ parsing */ |
| 154 | } |
| 155 | |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | /* encode 'bearer capability' */ |
| 160 | int gsm48_encode_bearer_cap(struct msgb *msg, int lv_only, |
| 161 | const struct gsm_mncc_bearer_cap *bcap) |
| 162 | { |
| 163 | uint8_t lv[32 + 1]; |
| 164 | int i = 1, s; |
| 165 | |
| 166 | lv[1] = bcap->transfer; |
| 167 | lv[1] |= bcap->mode << 3; |
| 168 | lv[1] |= bcap->coding << 4; |
| 169 | lv[1] |= bcap->radio << 5; |
| 170 | |
| 171 | if (bcap->transfer == GSM_MNCC_BCAP_SPEECH) { |
| 172 | for (s = 0; bcap->speech_ver[s] >= 0; s++) { |
| 173 | i++; /* octet 3a etc */ |
| 174 | lv[i] = bcap->speech_ver[s]; |
| 175 | if (i == 2) /* octet 3a */ |
| 176 | lv[i] |= bcap->speech_ctm << 5; |
| 177 | } |
| 178 | lv[i] |= 0x80; /* last IE of octet 3 etc */ |
| 179 | } else { |
| 180 | /* FIXME: implement OCTET 4+ encoding */ |
| 181 | } |
| 182 | |
| 183 | lv[0] = i; |
| 184 | if (lv_only) |
| 185 | msgb_lv_put(msg, lv[0], lv+1); |
| 186 | else |
| 187 | msgb_tlv_put(msg, GSM48_IE_BEARER_CAP, lv[0], lv+1); |
| 188 | |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | /* decode 'call control cap' */ |
| 193 | int gsm48_decode_cccap(struct gsm_mncc_cccap *ccap, const uint8_t *lv) |
| 194 | { |
| 195 | uint8_t in_len = lv[0]; |
| 196 | |
| 197 | if (in_len < 1) |
| 198 | return -EINVAL; |
| 199 | |
| 200 | /* octet 3 */ |
| 201 | ccap->dtmf = lv[1] & 0x01; |
| 202 | ccap->pcp = (lv[1] & 0x02) >> 1; |
| 203 | |
| 204 | return 0; |
| 205 | } |
| 206 | |
| 207 | /* encode 'call control cap' */ |
| 208 | int gsm48_encode_cccap(struct msgb *msg, |
| 209 | const struct gsm_mncc_cccap *ccap) |
| 210 | { |
| 211 | uint8_t lv[2]; |
| 212 | |
| 213 | lv[0] = 1; |
| 214 | lv[1] = 0; |
| 215 | if (ccap->dtmf) |
| 216 | lv [1] |= 0x01; |
| 217 | if (ccap->pcp) |
| 218 | lv [1] |= 0x02; |
| 219 | |
| 220 | msgb_tlv_put(msg, GSM48_IE_CC_CAP, lv[0], lv+1); |
| 221 | |
| 222 | return 0; |
| 223 | } |
| 224 | |
| 225 | /* decode 'called party BCD number' */ |
| 226 | int gsm48_decode_called(struct gsm_mncc_number *called, |
| 227 | const uint8_t *lv) |
| 228 | { |
| 229 | uint8_t in_len = lv[0]; |
| 230 | |
| 231 | if (in_len < 1) |
| 232 | return -EINVAL; |
| 233 | |
| 234 | /* octet 3 */ |
| 235 | called->plan = lv[1] & 0x0f; |
| 236 | called->type = (lv[1] & 0x70) >> 4; |
| 237 | |
| 238 | /* octet 4..N */ |
| 239 | gsm48_decode_bcd_number(called->number, sizeof(called->number), lv, 1); |
| 240 | |
| 241 | return 0; |
| 242 | } |
| 243 | |
| 244 | /* encode 'called party BCD number' */ |
| 245 | int gsm48_encode_called(struct msgb *msg, |
| 246 | const struct gsm_mncc_number *called) |
| 247 | { |
| 248 | uint8_t lv[18]; |
| 249 | int ret; |
| 250 | |
| 251 | /* octet 3 */ |
Sylvain Munaut | 47ee693 | 2010-09-20 20:59:23 +0200 | [diff] [blame] | 252 | lv[1] = 0x80; /* no extension */ |
| 253 | lv[1] |= called->plan; |
Harald Welte | 1e90866 | 2010-03-07 23:39:54 +0100 | [diff] [blame] | 254 | lv[1] |= called->type << 4; |
| 255 | |
| 256 | /* octet 4..N, octet 2 */ |
| 257 | ret = gsm48_encode_bcd_number(lv, sizeof(lv), 1, called->number); |
| 258 | if (ret < 0) |
| 259 | return ret; |
| 260 | |
| 261 | msgb_tlv_put(msg, GSM48_IE_CALLED_BCD, lv[0], lv+1); |
| 262 | |
| 263 | return 0; |
| 264 | } |
| 265 | |
| 266 | /* decode callerid of various IEs */ |
| 267 | int gsm48_decode_callerid(struct gsm_mncc_number *callerid, |
| 268 | const uint8_t *lv) |
| 269 | { |
| 270 | uint8_t in_len = lv[0]; |
| 271 | int i = 1; |
| 272 | |
| 273 | if (in_len < 1) |
| 274 | return -EINVAL; |
| 275 | |
| 276 | /* octet 3 */ |
| 277 | callerid->plan = lv[1] & 0x0f; |
| 278 | callerid->type = (lv[1] & 0x70) >> 4; |
| 279 | |
| 280 | /* octet 3a */ |
| 281 | if (!(lv[1] & 0x80)) { |
| 282 | callerid->screen = lv[2] & 0x03; |
| 283 | callerid->present = (lv[2] & 0x60) >> 5; |
| 284 | i = 2; |
| 285 | } |
| 286 | |
| 287 | /* octet 4..N */ |
| 288 | gsm48_decode_bcd_number(callerid->number, sizeof(callerid->number), lv, i); |
| 289 | |
| 290 | return 0; |
| 291 | } |
| 292 | |
| 293 | /* encode callerid of various IEs */ |
| 294 | int gsm48_encode_callerid(struct msgb *msg, int ie, int max_len, |
| 295 | const struct gsm_mncc_number *callerid) |
| 296 | { |
| 297 | uint8_t lv[max_len - 1]; |
| 298 | int h_len = 1; |
| 299 | int ret; |
| 300 | |
| 301 | /* octet 3 */ |
| 302 | lv[1] = callerid->plan; |
| 303 | lv[1] |= callerid->type << 4; |
| 304 | |
| 305 | if (callerid->present || callerid->screen) { |
| 306 | /* octet 3a */ |
| 307 | lv[2] = callerid->screen; |
| 308 | lv[2] |= callerid->present << 5; |
| 309 | lv[2] |= 0x80; |
| 310 | h_len++; |
| 311 | } else |
| 312 | lv[1] |= 0x80; |
| 313 | |
| 314 | /* octet 4..N, octet 2 */ |
| 315 | ret = gsm48_encode_bcd_number(lv, sizeof(lv), h_len, callerid->number); |
| 316 | if (ret < 0) |
| 317 | return ret; |
| 318 | |
| 319 | msgb_tlv_put(msg, ie, lv[0], lv+1); |
| 320 | |
| 321 | return 0; |
| 322 | } |
| 323 | |
| 324 | /* decode 'cause' */ |
| 325 | int gsm48_decode_cause(struct gsm_mncc_cause *cause, |
| 326 | const uint8_t *lv) |
| 327 | { |
| 328 | uint8_t in_len = lv[0]; |
| 329 | int i; |
| 330 | |
| 331 | if (in_len < 2) |
| 332 | return -EINVAL; |
| 333 | |
| 334 | cause->diag_len = 0; |
| 335 | |
| 336 | /* octet 3 */ |
| 337 | cause->location = lv[1] & 0x0f; |
| 338 | cause->coding = (lv[1] & 0x60) >> 5; |
| 339 | |
| 340 | i = 1; |
| 341 | if (!(lv[i] & 0x80)) { |
| 342 | i++; /* octet 3a */ |
| 343 | if (in_len < i+1) |
| 344 | return 0; |
| 345 | cause->rec = 1; |
| 346 | cause->rec_val = lv[i] & 0x7f; |
| 347 | } |
| 348 | i++; |
| 349 | |
| 350 | /* octet 4 */ |
| 351 | cause->value = lv[i] & 0x7f; |
| 352 | i++; |
| 353 | |
| 354 | if (in_len < i) /* no diag */ |
| 355 | return 0; |
| 356 | |
| 357 | if (in_len - (i-1) > 32) /* maximum 32 octets */ |
| 358 | return 0; |
| 359 | |
| 360 | /* octet 5-N */ |
| 361 | memcpy(cause->diag, lv + i, in_len - (i-1)); |
| 362 | cause->diag_len = in_len - (i-1); |
| 363 | |
| 364 | return 0; |
| 365 | } |
| 366 | |
| 367 | /* encode 'cause' */ |
| 368 | int gsm48_encode_cause(struct msgb *msg, int lv_only, |
| 369 | const struct gsm_mncc_cause *cause) |
| 370 | { |
| 371 | uint8_t lv[32+4]; |
| 372 | int i; |
| 373 | |
| 374 | if (cause->diag_len > 32) |
| 375 | return -EINVAL; |
| 376 | |
| 377 | /* octet 3 */ |
| 378 | lv[1] = cause->location; |
| 379 | lv[1] |= cause->coding << 5; |
| 380 | |
| 381 | i = 1; |
| 382 | if (cause->rec) { |
| 383 | i++; /* octet 3a */ |
| 384 | lv[i] = cause->rec_val; |
| 385 | } |
| 386 | lv[i] |= 0x80; /* end of octet 3 */ |
| 387 | |
| 388 | /* octet 4 */ |
| 389 | i++; |
| 390 | lv[i] = 0x80 | cause->value; |
| 391 | |
| 392 | /* octet 5-N */ |
| 393 | if (cause->diag_len) { |
| 394 | memcpy(lv + i, cause->diag, cause->diag_len); |
| 395 | i += cause->diag_len; |
| 396 | } |
| 397 | |
| 398 | lv[0] = i; |
| 399 | if (lv_only) |
| 400 | msgb_lv_put(msg, lv[0], lv+1); |
| 401 | else |
| 402 | msgb_tlv_put(msg, GSM48_IE_CAUSE, lv[0], lv+1); |
| 403 | |
| 404 | return 0; |
| 405 | } |
| 406 | |
| 407 | /* decode 'calling number' */ |
| 408 | int gsm48_decode_calling(struct gsm_mncc_number *calling, |
| 409 | const uint8_t *lv) |
| 410 | { |
| 411 | return gsm48_decode_callerid(calling, lv); |
| 412 | } |
| 413 | |
| 414 | /* encode 'calling number' */ |
| 415 | int gsm48_encode_calling(struct msgb *msg, |
| 416 | const struct gsm_mncc_number *calling) |
| 417 | { |
| 418 | return gsm48_encode_callerid(msg, GSM48_IE_CALLING_BCD, 14, calling); |
| 419 | } |
| 420 | |
| 421 | /* decode 'connected number' */ |
| 422 | int gsm48_decode_connected(struct gsm_mncc_number *connected, |
| 423 | const uint8_t *lv) |
| 424 | { |
| 425 | return gsm48_decode_callerid(connected, lv); |
| 426 | } |
| 427 | |
| 428 | /* encode 'connected number' */ |
| 429 | int gsm48_encode_connected(struct msgb *msg, |
| 430 | const struct gsm_mncc_number *connected) |
| 431 | { |
| 432 | return gsm48_encode_callerid(msg, GSM48_IE_CONN_BCD, 14, connected); |
| 433 | } |
| 434 | |
| 435 | /* decode 'redirecting number' */ |
| 436 | int gsm48_decode_redirecting(struct gsm_mncc_number *redirecting, |
| 437 | const uint8_t *lv) |
| 438 | { |
| 439 | return gsm48_decode_callerid(redirecting, lv); |
| 440 | } |
| 441 | |
| 442 | /* encode 'redirecting number' */ |
| 443 | int gsm48_encode_redirecting(struct msgb *msg, |
| 444 | const struct gsm_mncc_number *redirecting) |
| 445 | { |
| 446 | return gsm48_encode_callerid(msg, GSM48_IE_REDIR_BCD, 19, redirecting); |
| 447 | } |
| 448 | |
| 449 | /* decode 'facility' */ |
| 450 | int gsm48_decode_facility(struct gsm_mncc_facility *facility, |
| 451 | const uint8_t *lv) |
| 452 | { |
| 453 | uint8_t in_len = lv[0]; |
| 454 | |
| 455 | if (in_len < 1) |
| 456 | return -EINVAL; |
| 457 | |
| 458 | if (in_len > sizeof(facility->info)) |
| 459 | return -EINVAL; |
| 460 | |
| 461 | memcpy(facility->info, lv+1, in_len); |
| 462 | facility->len = in_len; |
| 463 | |
| 464 | return 0; |
| 465 | } |
| 466 | |
| 467 | /* encode 'facility' */ |
| 468 | int gsm48_encode_facility(struct msgb *msg, int lv_only, |
| 469 | const struct gsm_mncc_facility *facility) |
| 470 | { |
| 471 | uint8_t lv[GSM_MAX_FACILITY + 1]; |
| 472 | |
| 473 | if (facility->len < 1 || facility->len > GSM_MAX_FACILITY) |
| 474 | return -EINVAL; |
| 475 | |
| 476 | memcpy(lv+1, facility->info, facility->len); |
| 477 | lv[0] = facility->len; |
| 478 | if (lv_only) |
| 479 | msgb_lv_put(msg, lv[0], lv+1); |
| 480 | else |
| 481 | msgb_tlv_put(msg, GSM48_IE_FACILITY, lv[0], lv+1); |
| 482 | |
| 483 | return 0; |
| 484 | } |
| 485 | |
| 486 | /* decode 'notify' */ |
| 487 | int gsm48_decode_notify(int *notify, const uint8_t *v) |
| 488 | { |
| 489 | *notify = v[0] & 0x7f; |
| 490 | |
| 491 | return 0; |
| 492 | } |
| 493 | |
| 494 | /* encode 'notify' */ |
| 495 | int gsm48_encode_notify(struct msgb *msg, int notify) |
| 496 | { |
| 497 | msgb_v_put(msg, notify | 0x80); |
| 498 | |
| 499 | return 0; |
| 500 | } |
| 501 | |
| 502 | /* decode 'signal' */ |
| 503 | int gsm48_decode_signal(int *signal, const uint8_t *v) |
| 504 | { |
| 505 | *signal = v[0]; |
| 506 | |
| 507 | return 0; |
| 508 | } |
| 509 | |
| 510 | /* encode 'signal' */ |
| 511 | int gsm48_encode_signal(struct msgb *msg, int signal) |
| 512 | { |
| 513 | msgb_tv_put(msg, GSM48_IE_SIGNAL, signal); |
| 514 | |
| 515 | return 0; |
| 516 | } |
| 517 | |
| 518 | /* decode 'keypad' */ |
| 519 | int gsm48_decode_keypad(int *keypad, const uint8_t *lv) |
| 520 | { |
| 521 | uint8_t in_len = lv[0]; |
| 522 | |
| 523 | if (in_len < 1) |
| 524 | return -EINVAL; |
| 525 | |
| 526 | *keypad = lv[1] & 0x7f; |
| 527 | |
| 528 | return 0; |
| 529 | } |
| 530 | |
| 531 | /* encode 'keypad' */ |
| 532 | int gsm48_encode_keypad(struct msgb *msg, int keypad) |
| 533 | { |
| 534 | msgb_tv_put(msg, GSM48_IE_KPD_FACILITY, keypad); |
| 535 | |
| 536 | return 0; |
| 537 | } |
| 538 | |
| 539 | /* decode 'progress' */ |
| 540 | int gsm48_decode_progress(struct gsm_mncc_progress *progress, |
| 541 | const uint8_t *lv) |
| 542 | { |
| 543 | uint8_t in_len = lv[0]; |
| 544 | |
| 545 | if (in_len < 2) |
| 546 | return -EINVAL; |
| 547 | |
| 548 | progress->coding = (lv[1] & 0x60) >> 5; |
| 549 | progress->location = lv[1] & 0x0f; |
| 550 | progress->descr = lv[2] & 0x7f; |
| 551 | |
| 552 | return 0; |
| 553 | } |
| 554 | |
| 555 | /* encode 'progress' */ |
| 556 | int gsm48_encode_progress(struct msgb *msg, int lv_only, |
| 557 | const struct gsm_mncc_progress *p) |
| 558 | { |
| 559 | uint8_t lv[3]; |
| 560 | |
| 561 | lv[0] = 2; |
| 562 | lv[1] = 0x80 | ((p->coding & 0x3) << 5) | (p->location & 0xf); |
| 563 | lv[2] = 0x80 | (p->descr & 0x7f); |
| 564 | if (lv_only) |
| 565 | msgb_lv_put(msg, lv[0], lv+1); |
| 566 | else |
| 567 | msgb_tlv_put(msg, GSM48_IE_PROGR_IND, lv[0], lv+1); |
| 568 | |
| 569 | return 0; |
| 570 | } |
| 571 | |
| 572 | /* decode 'user-user' */ |
| 573 | int gsm48_decode_useruser(struct gsm_mncc_useruser *uu, |
| 574 | const uint8_t *lv) |
| 575 | { |
| 576 | uint8_t in_len = lv[0]; |
| 577 | char *info = uu->info; |
| 578 | int info_len = sizeof(uu->info); |
| 579 | int i; |
| 580 | |
| 581 | if (in_len < 1) |
| 582 | return -EINVAL; |
| 583 | |
| 584 | uu->proto = lv[1]; |
| 585 | |
| 586 | for (i = 2; i <= in_len; i++) { |
| 587 | info_len--; |
| 588 | if (info_len <= 1) |
| 589 | break; |
| 590 | *info++ = lv[i]; |
| 591 | } |
| 592 | if (info_len >= 1) |
| 593 | *info++ = '\0'; |
| 594 | |
| 595 | return 0; |
| 596 | } |
| 597 | |
| 598 | /* encode 'useruser' */ |
| 599 | int gsm48_encode_useruser(struct msgb *msg, int lv_only, |
| 600 | const struct gsm_mncc_useruser *uu) |
| 601 | { |
| 602 | uint8_t lv[GSM_MAX_USERUSER + 2]; |
| 603 | |
| 604 | if (strlen(uu->info) > GSM_MAX_USERUSER) |
| 605 | return -EINVAL; |
| 606 | |
| 607 | lv[0] = 1 + strlen(uu->info); |
| 608 | lv[1] = uu->proto; |
| 609 | memcpy(lv + 2, uu->info, strlen(uu->info)); |
| 610 | if (lv_only) |
| 611 | msgb_lv_put(msg, lv[0], lv+1); |
| 612 | else |
| 613 | msgb_tlv_put(msg, GSM48_IE_USER_USER, lv[0], lv+1); |
| 614 | |
| 615 | return 0; |
| 616 | } |
| 617 | |
| 618 | /* decode 'ss version' */ |
| 619 | int gsm48_decode_ssversion(struct gsm_mncc_ssversion *ssv, |
| 620 | const uint8_t *lv) |
| 621 | { |
| 622 | uint8_t in_len = lv[0]; |
| 623 | |
| 624 | if (in_len < 1 || in_len < sizeof(ssv->info)) |
| 625 | return -EINVAL; |
| 626 | |
| 627 | memcpy(ssv->info, lv + 1, in_len); |
| 628 | ssv->len = in_len; |
| 629 | |
| 630 | return 0; |
| 631 | } |
| 632 | |
| 633 | /* encode 'ss version' */ |
| 634 | int gsm48_encode_ssversion(struct msgb *msg, |
| 635 | const struct gsm_mncc_ssversion *ssv) |
| 636 | { |
| 637 | uint8_t lv[GSM_MAX_SSVERSION + 1]; |
| 638 | |
| 639 | if (ssv->len > GSM_MAX_SSVERSION) |
| 640 | return -EINVAL; |
| 641 | |
| 642 | lv[0] = ssv->len; |
| 643 | memcpy(lv + 1, ssv->info, ssv->len); |
| 644 | msgb_tlv_put(msg, GSM48_IE_SS_VERS, lv[0], lv+1); |
| 645 | |
| 646 | return 0; |
| 647 | } |
| 648 | |
| 649 | /* decode 'more data' does not require a function, because it has no value */ |
| 650 | |
| 651 | /* encode 'more data' */ |
| 652 | int gsm48_encode_more(struct msgb *msg) |
| 653 | { |
| 654 | uint8_t *ie; |
| 655 | |
| 656 | ie = msgb_put(msg, 1); |
| 657 | ie[0] = GSM48_IE_MORE_DATA; |
| 658 | |
| 659 | return 0; |
| 660 | } |
| 661 | |
Harald Welte | 1523d70 | 2010-08-04 11:46:44 +0200 | [diff] [blame] | 662 | /* decode "Cell Channel Description" (10.5.2.1b) and other frequency lists */ |
| 663 | int gsm48_decode_freq_list(struct gsm_sysinfo_freq *f, uint8_t *cd, |
| 664 | uint8_t len, uint8_t mask, uint8_t frqt) |
| 665 | { |
| 666 | int i; |
| 667 | |
| 668 | /* NOTES: |
| 669 | * |
| 670 | * The Range format uses "SMOD" computation. |
| 671 | * e.g. "n SMOD m" equals "((n - 1) % m) + 1" |
| 672 | * A cascade of multiple SMOD computations is simpified: |
| 673 | * "(n SMOD m) SMOD o" equals "(((n - 1) % m) % o) + 1" |
| 674 | * |
| 675 | * The Range format uses 16 octets of data in SYSTEM INFORMATION. |
| 676 | * When used in dedicated messages, the length can be less. |
| 677 | * In this case the ranges are decoded for all frequencies that |
| 678 | * fit in the block of given length. |
| 679 | */ |
| 680 | |
| 681 | /* tabula rasa */ |
| 682 | for (i = 0; i < 1024; i++) |
| 683 | f[i].mask &= ~frqt; |
| 684 | |
| 685 | /* 00..XXX. */ |
| 686 | if ((cd[0] & 0xc0 & mask) == 0x00) { |
| 687 | /* Bit map 0 format */ |
| 688 | if (len < 16) |
| 689 | return -EINVAL; |
| 690 | for (i = 1; i <= 124; i++) |
| 691 | if ((cd[15 - ((i-1) >> 3)] & (1 << ((i-1) & 7)))) |
| 692 | f[i].mask |= frqt; |
| 693 | |
| 694 | return 0; |
| 695 | } |
| 696 | |
| 697 | /* 10..0XX. */ |
| 698 | if ((cd[0] & 0xc8 & mask) == 0x80) { |
| 699 | /* Range 1024 format */ |
| 700 | uint16_t w[17]; /* 1..16 */ |
| 701 | struct gsm48_range_1024 *r = (struct gsm48_range_1024 *)cd; |
| 702 | |
| 703 | if (len < 2) |
| 704 | return -EINVAL; |
| 705 | memset(w, 0, sizeof(w)); |
| 706 | if (r->f0) |
| 707 | f[0].mask |= frqt; |
| 708 | w[1] = (r->w1_hi << 8) | r->w1_lo; |
| 709 | if (len >= 4) |
| 710 | w[2] = (r->w2_hi << 1) | r->w2_lo; |
| 711 | if (len >= 5) |
| 712 | w[3] = (r->w3_hi << 2) | r->w3_lo; |
| 713 | if (len >= 6) |
| 714 | w[4] = (r->w4_hi << 2) | r->w4_lo; |
| 715 | if (len >= 7) |
| 716 | w[5] = (r->w5_hi << 2) | r->w5_lo; |
| 717 | if (len >= 8) |
| 718 | w[6] = (r->w6_hi << 2) | r->w6_lo; |
| 719 | if (len >= 9) |
| 720 | w[7] = (r->w7_hi << 2) | r->w7_lo; |
| 721 | if (len >= 10) |
| 722 | w[8] = (r->w8_hi << 1) | r->w8_lo; |
| 723 | if (len >= 10) |
| 724 | w[9] = r->w9; |
| 725 | if (len >= 11) |
| 726 | w[10] = r->w10; |
| 727 | if (len >= 12) |
| 728 | w[11] = (r->w11_hi << 6) | r->w11_lo; |
| 729 | if (len >= 13) |
| 730 | w[12] = (r->w12_hi << 5) | r->w12_lo; |
| 731 | if (len >= 14) |
| 732 | w[13] = (r->w13_hi << 4) | r->w13_lo; |
| 733 | if (len >= 15) |
| 734 | w[14] = (r->w14_hi << 3) | r->w14_lo; |
| 735 | if (len >= 16) |
| 736 | w[15] = (r->w15_hi << 2) | r->w15_lo; |
| 737 | if (len >= 16) |
| 738 | w[16] = r->w16; |
| 739 | if (w[1]) |
| 740 | f[w[1]].mask |= frqt; |
| 741 | if (w[2]) |
| 742 | f[((w[1] - 512 + w[2] - 1) % 1023) + 1].mask |= frqt; |
| 743 | if (w[3]) |
| 744 | f[((w[1] + w[3] - 1) % 1023) + 1].mask |= frqt; |
| 745 | if (w[4]) |
| 746 | f[((w[1] - 512 + ((w[2] - 256 + w[4] - 1) % 511)) % 1023) + 1].mask |= frqt; |
| 747 | if (w[5]) |
Andreas.Eversberg | 1a99df8 | 2011-07-30 20:27:40 +0200 | [diff] [blame^] | 748 | f[((w[1] + ((w[3] - 256 + w[5] - 1) % 511)) % 1023) + 1].mask |= frqt; |
Harald Welte | 1523d70 | 2010-08-04 11:46:44 +0200 | [diff] [blame] | 749 | if (w[6]) |
| 750 | f[((w[1] - 512 + ((w[2] + w[6] - 1) % 511)) % 1023) + 1].mask |= frqt; |
| 751 | if (w[7]) |
| 752 | f[((w[1] + ((w[3] + w[7] - 1) % 511)) % 1023) + 1].mask |= frqt; |
| 753 | if (w[8]) |
| 754 | f[((w[1] - 512 + ((w[2] - 256 + ((w[4] - 128 + w[8] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt; |
| 755 | if (w[9]) |
| 756 | f[((w[1] + ((w[3] - 256 + ((w[5] - 128 + w[9] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt; |
| 757 | if (w[10]) |
| 758 | f[((w[1] - 512 + ((w[2] + ((w[6] - 128 + w[10] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt; |
| 759 | if (w[11]) |
| 760 | f[((w[1] + ((w[3] + ((w[7] - 128 + w[11] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt; |
| 761 | if (w[12]) |
| 762 | f[((w[1] - 512 + ((w[2] - 256 + ((w[4] + w[12] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt; |
| 763 | if (w[13]) |
| 764 | f[((w[1] + ((w[3] - 256 + ((w[5] + w[13] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt; |
| 765 | if (w[14]) |
| 766 | f[((w[1] - 512 + ((w[2] + ((w[6] + w[14] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt; |
| 767 | if (w[15]) |
| 768 | f[((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 255)) % 511)) % 1023) + 1].mask |= frqt; |
| 769 | if (w[16]) |
| 770 | f[((w[1] - 512 + ((w[2] - 256 + ((w[4] - 128 + ((w[8] - 64 + w[16] - 1) % 127)) % 255)) % 511)) % 1023) + 1].mask |= frqt; |
| 771 | |
| 772 | return 0; |
| 773 | } |
| 774 | /* 10..100. */ |
| 775 | if ((cd[0] & 0xce & mask) == 0x88) { |
| 776 | /* Range 512 format */ |
| 777 | uint16_t w[18]; /* 1..17 */ |
| 778 | struct gsm48_range_512 *r = (struct gsm48_range_512 *)cd; |
| 779 | |
| 780 | if (len < 4) |
| 781 | return -EINVAL; |
| 782 | memset(w, 0, sizeof(w)); |
| 783 | w[0] = (r->orig_arfcn_hi << 9) | (r->orig_arfcn_mid << 1) | r->orig_arfcn_lo; |
| 784 | w[1] = (r->w1_hi << 2) | r->w1_lo; |
| 785 | if (len >= 5) |
| 786 | w[2] = (r->w2_hi << 2) | r->w2_lo; |
| 787 | if (len >= 6) |
| 788 | w[3] = (r->w3_hi << 2) | r->w3_lo; |
| 789 | if (len >= 7) |
| 790 | w[4] = (r->w4_hi << 1) | r->w4_lo; |
| 791 | if (len >= 7) |
| 792 | w[5] = r->w5; |
| 793 | if (len >= 8) |
| 794 | w[6] = r->w6; |
| 795 | if (len >= 9) |
| 796 | w[7] = (r->w7_hi << 6) | r->w7_lo; |
| 797 | if (len >= 10) |
| 798 | w[8] = (r->w8_hi << 4) | r->w8_lo; |
| 799 | if (len >= 11) |
| 800 | w[9] = (r->w9_hi << 2) | r->w9_lo; |
| 801 | if (len >= 11) |
| 802 | w[10] = r->w10; |
| 803 | if (len >= 12) |
| 804 | w[11] = r->w11; |
| 805 | if (len >= 13) |
| 806 | w[12] = (r->w12_hi << 4) | r->w12_lo; |
| 807 | if (len >= 14) |
| 808 | w[13] = (r->w13_hi << 2) | r->w13_lo; |
| 809 | if (len >= 14) |
| 810 | w[14] = r->w14; |
| 811 | if (len >= 15) |
| 812 | w[15] = r->w15; |
| 813 | if (len >= 16) |
| 814 | w[16] = (r->w16_hi << 3) | r->w16_lo; |
| 815 | if (len >= 16) |
| 816 | w[17] = r->w17; |
| 817 | f[w[0]].mask |= frqt; |
| 818 | if (w[1]) |
| 819 | f[(w[0] + w[1]) % 1024].mask |= frqt; |
| 820 | if (w[2]) |
| 821 | f[(w[0] + ((w[1] - 256 + w[2] - 1) % 511) + 1) % 1024].mask |= frqt; |
| 822 | if (w[3]) |
| 823 | f[(w[0] + ((w[1] + w[3] - 1) % 511) + 1) % 1024].mask |= frqt; |
| 824 | if (w[4]) |
| 825 | f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + w[4] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 826 | if (w[5]) |
| 827 | f[(w[0] + ((w[1] + ((w[3] - 128 + w[5] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 828 | if (w[6]) |
| 829 | f[(w[0] + ((w[1] - 256 + ((w[2] + w[6] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 830 | if (w[7]) |
| 831 | f[(w[0] + ((w[1] + ((w[3] + w[7] - 1) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 832 | if (w[8]) |
| 833 | f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + ((w[4] - 64 + w[8] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 834 | if (w[9]) |
| 835 | f[(w[0] + ((w[1] + ((w[3] - 128 + ((w[5] - 64 + w[9] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 836 | if (w[10]) |
| 837 | f[(w[0] + ((w[1] - 256 + ((w[2] + ((w[6] - 64 + w[10] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 838 | if (w[11]) |
| 839 | f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 64 + w[11] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 840 | if (w[12]) |
| 841 | f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + ((w[4] + w[12] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 842 | if (w[13]) |
| 843 | f[(w[0] + ((w[1] + ((w[3] - 128 + ((w[5] + w[13] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 844 | if (w[14]) |
| 845 | f[(w[0] + ((w[1] - 256 + ((w[2] + ((w[6] + w[14] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 846 | if (w[15]) |
| 847 | f[(w[0] + ((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 848 | if (w[16]) |
| 849 | f[(w[0] + ((w[1] - 256 + ((w[2] - 128 + ((w[4] - 64 + ((w[8] - 32 + w[16] - 1) % 63)) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 850 | if (w[17]) |
| 851 | f[(w[0] + ((w[1] + ((w[3] - 128 + ((w[5] - 64 + ((w[9] - 32 + w[17] - 1) % 63)) % 127)) % 255)) % 511) + 1) % 1024].mask |= frqt; |
| 852 | |
| 853 | return 0; |
| 854 | } |
| 855 | /* 10..101. */ |
| 856 | if ((cd[0] & 0xce & mask) == 0x8a) { |
| 857 | /* Range 256 format */ |
| 858 | uint16_t w[22]; /* 1..21 */ |
| 859 | struct gsm48_range_256 *r = (struct gsm48_range_256 *)cd; |
| 860 | |
| 861 | if (len < 4) |
| 862 | return -EINVAL; |
| 863 | memset(w, 0, sizeof(w)); |
| 864 | w[0] = (r->orig_arfcn_hi << 9) | (r->orig_arfcn_mid << 1) | r->orig_arfcn_lo; |
| 865 | w[1] = (r->w1_hi << 1) | r->w1_lo; |
| 866 | if (len >= 4) |
| 867 | w[2] = r->w2; |
| 868 | if (len >= 5) |
| 869 | w[3] = r->w3; |
| 870 | if (len >= 6) |
| 871 | w[4] = (r->w4_hi << 5) | r->w4_lo; |
| 872 | if (len >= 7) |
| 873 | w[5] = (r->w5_hi << 3) | r->w5_lo; |
| 874 | if (len >= 8) |
| 875 | w[6] = (r->w6_hi << 1) | r->w6_lo; |
| 876 | if (len >= 8) |
| 877 | w[7] = r->w7; |
| 878 | if (len >= 9) |
| 879 | w[8] = (r->w8_hi << 4) | r->w8_lo; |
| 880 | if (len >= 10) |
| 881 | w[9] = (r->w9_hi << 1) | r->w9_lo; |
| 882 | if (len >= 10) |
| 883 | w[10] = r->w10; |
| 884 | if (len >= 11) |
| 885 | w[11] = (r->w11_hi << 3) | r->w11_lo; |
| 886 | if (len >= 11) |
| 887 | w[12] = r->w12; |
| 888 | if (len >= 12) |
| 889 | w[13] = r->w13; |
| 890 | if (len >= 13) |
| 891 | w[14] = r->w15; |
| 892 | if (len >= 13) |
| 893 | w[15] = (r->w14_hi << 2) | r->w14_lo; |
| 894 | if (len >= 14) |
| 895 | w[16] = (r->w16_hi << 3) | r->w16_lo; |
| 896 | if (len >= 14) |
| 897 | w[17] = r->w17; |
| 898 | if (len >= 15) |
| 899 | w[18] = r->w19; |
| 900 | if (len >= 15) |
| 901 | w[19] = (r->w18_hi << 3) | r->w18_lo; |
| 902 | if (len >= 16) |
| 903 | w[20] = (r->w20_hi << 3) | r->w20_lo; |
| 904 | if (len >= 16) |
| 905 | w[21] = r->w21; |
| 906 | f[w[0]].mask |= frqt; |
| 907 | if (w[1]) |
| 908 | f[(w[0] + w[1]) % 1024].mask |= frqt; |
| 909 | if (w[2]) |
| 910 | f[(w[0] + ((w[1] - 128 + w[2] - 1) % 255) + 1) % 1024].mask |= frqt; |
| 911 | if (w[3]) |
| 912 | f[(w[0] + ((w[1] + w[3] - 1) % 255) + 1) % 1024].mask |= frqt; |
| 913 | if (w[4]) |
| 914 | f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + w[4] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 915 | if (w[5]) |
| 916 | f[(w[0] + ((w[1] + ((w[3] - 64 + w[5] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 917 | if (w[6]) |
| 918 | f[(w[0] + ((w[1] - 128 + ((w[2] + w[6] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 919 | if (w[7]) |
| 920 | f[(w[0] + ((w[1] + ((w[3] + w[7] - 1) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 921 | if (w[8]) |
| 922 | f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + ((w[4] - 32 + w[8] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 923 | if (w[9]) |
| 924 | f[(w[0] + ((w[1] + ((w[3] - 64 + ((w[5] - 32 + w[9] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 925 | if (w[10]) |
| 926 | f[(w[0] + ((w[1] - 128 + ((w[2] + ((w[6] - 32 + w[10] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 927 | if (w[11]) |
| 928 | f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 32 + w[11] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 929 | if (w[12]) |
| 930 | f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + ((w[4] + w[12] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 931 | if (w[13]) |
| 932 | f[(w[0] + ((w[1] + ((w[3] - 64 + ((w[5] + w[13] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 933 | if (w[14]) |
| 934 | f[(w[0] + ((w[1] - 128 + ((w[2] + ((w[6] + w[14] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 935 | if (w[15]) |
| 936 | f[(w[0] + ((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 937 | if (w[16]) |
| 938 | f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + ((w[4] - 32 + ((w[8] - 16 + w[16] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 939 | if (w[17]) |
| 940 | f[(w[0] + ((w[1] + ((w[3] - 64 + ((w[5] - 32 + ((w[9] - 16 + w[17] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 941 | if (w[18]) |
| 942 | f[(w[0] + ((w[1] - 128 + ((w[2] + ((w[6] - 32 + ((w[10] - 16 + w[18] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 943 | if (w[19]) |
| 944 | f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 32 + ((w[11] - 16 + w[19] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 945 | if (w[20]) |
| 946 | f[(w[0] + ((w[1] - 128 + ((w[2] - 64 + ((w[4] + ((w[12] - 16 + w[20] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 947 | if (w[21]) |
| 948 | f[(w[0] + ((w[1] + ((w[3] - 64 + ((w[5] + ((w[13] - 16 + w[21] - 1) % 31)) % 63)) % 127)) % 255) + 1) % 1024].mask |= frqt; |
| 949 | |
| 950 | return 0; |
| 951 | } |
| 952 | /* 10..110. */ |
| 953 | if ((cd[0] & 0xce & mask) == 0x8c) { |
| 954 | /* Range 128 format */ |
| 955 | uint16_t w[29]; /* 1..28 */ |
| 956 | struct gsm48_range_128 *r = (struct gsm48_range_128 *)cd; |
| 957 | |
| 958 | if (len < 3) |
| 959 | return -EINVAL; |
| 960 | memset(w, 0, sizeof(w)); |
| 961 | w[0] = (r->orig_arfcn_hi << 9) | (r->orig_arfcn_mid << 1) | r->orig_arfcn_lo; |
| 962 | w[1] = r->w1; |
| 963 | if (len >= 4) |
| 964 | w[2] = r->w2; |
| 965 | if (len >= 5) |
| 966 | w[3] = (r->w3_hi << 4) | r->w3_lo; |
| 967 | if (len >= 6) |
| 968 | w[4] = (r->w4_hi << 1) | r->w4_lo; |
| 969 | if (len >= 6) |
| 970 | w[5] = r->w5; |
| 971 | if (len >= 7) |
| 972 | w[6] = (r->w6_hi << 3) | r->w6_lo; |
| 973 | if (len >= 7) |
| 974 | w[7] = r->w7; |
| 975 | if (len >= 8) |
| 976 | w[8] = r->w8; |
| 977 | if (len >= 8) |
| 978 | w[9] = r->w9; |
| 979 | if (len >= 9) |
| 980 | w[10] = r->w10; |
| 981 | if (len >= 9) |
| 982 | w[11] = r->w11; |
| 983 | if (len >= 10) |
| 984 | w[12] = r->w12; |
| 985 | if (len >= 10) |
| 986 | w[13] = r->w13; |
| 987 | if (len >= 11) |
| 988 | w[14] = r->w14; |
| 989 | if (len >= 11) |
| 990 | w[15] = r->w15; |
| 991 | if (len >= 12) |
| 992 | w[16] = r->w16; |
| 993 | if (len >= 12) |
| 994 | w[17] = r->w17; |
| 995 | if (len >= 13) |
| 996 | w[18] = (r->w18_hi << 1) | r->w18_lo; |
| 997 | if (len >= 13) |
| 998 | w[19] = r->w19; |
| 999 | if (len >= 13) |
| 1000 | w[20] = r->w20; |
| 1001 | if (len >= 14) |
| 1002 | w[21] = (r->w21_hi << 2) | r->w21_lo; |
| 1003 | if (len >= 14) |
| 1004 | w[22] = r->w22; |
| 1005 | if (len >= 14) |
| 1006 | w[23] = r->w23; |
| 1007 | if (len >= 15) |
| 1008 | w[24] = r->w24; |
| 1009 | if (len >= 15) |
| 1010 | w[25] = r->w25; |
| 1011 | if (len >= 16) |
| 1012 | w[26] = (r->w26_hi << 1) | r->w26_lo; |
| 1013 | if (len >= 16) |
| 1014 | w[27] = r->w27; |
| 1015 | if (len >= 16) |
| 1016 | w[28] = r->w28; |
| 1017 | f[w[0]].mask |= frqt; |
| 1018 | if (w[1]) |
| 1019 | f[(w[0] + w[1]) % 1024].mask |= frqt; |
| 1020 | if (w[2]) |
| 1021 | f[(w[0] + ((w[1] - 64 + w[2] - 1) % 127) + 1) % 1024].mask |= frqt; |
| 1022 | if (w[3]) |
| 1023 | f[(w[0] + ((w[1] + w[3] - 1) % 127) + 1) % 1024].mask |= frqt; |
| 1024 | if (w[4]) |
| 1025 | f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + w[4] - 1) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1026 | if (w[5]) |
| 1027 | f[(w[0] + ((w[1] + ((w[3] - 32 + w[5] - 1) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1028 | if (w[6]) |
| 1029 | f[(w[0] + ((w[1] - 64 + ((w[2] + w[6] - 1) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1030 | if (w[7]) |
| 1031 | f[(w[0] + ((w[1] + ((w[3] + w[7] - 1) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1032 | if (w[8]) |
| 1033 | f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + ((w[4] - 16 + w[8] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1034 | if (w[9]) |
| 1035 | f[(w[0] + ((w[1] + ((w[3] - 32 + ((w[5] - 16 + w[9] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1036 | if (w[10]) |
| 1037 | f[(w[0] + ((w[1] - 64 + ((w[2] + ((w[6] - 16 + w[10] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1038 | if (w[11]) |
| 1039 | f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 16 + w[11] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1040 | if (w[12]) |
| 1041 | f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + ((w[4] + w[12] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1042 | if (w[13]) |
| 1043 | f[(w[0] + ((w[1] + ((w[3] - 32 + ((w[5] + w[13] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1044 | if (w[14]) |
| 1045 | f[(w[0] + ((w[1] - 64 + ((w[2] + ((w[6] + w[14] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1046 | if (w[15]) |
| 1047 | f[(w[0] + ((w[1] + ((w[3] + ((w[7] + w[15] - 1) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1048 | if (w[16]) |
| 1049 | f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + ((w[4] - 16 + ((w[8] - 8 + w[16] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1050 | if (w[17]) |
| 1051 | f[(w[0] + ((w[1] + ((w[3] - 32 + ((w[5] - 16 + ((w[9] - 8 + w[17] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1052 | if (w[18]) |
| 1053 | f[(w[0] + ((w[1] - 64 + ((w[2] + ((w[6] - 16 + ((w[10] - 8 + w[18] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1054 | if (w[19]) |
| 1055 | f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 16 + ((w[11] - 8 + w[19] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1056 | if (w[20]) |
| 1057 | f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + ((w[4] + ((w[12] - 8 + w[20] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1058 | if (w[21]) |
| 1059 | f[(w[0] + ((w[1] + ((w[3] - 32 + ((w[5] + ((w[13] - 8 + w[21] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1060 | if (w[22]) |
| 1061 | f[(w[0] + ((w[1] - 64 + ((w[2] + ((w[6] + ((w[14] - 8 + w[22] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1062 | if (w[23]) |
| 1063 | f[(w[0] + ((w[1] + ((w[3] + ((w[7] + ((w[15] - 8 + w[23] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1064 | if (w[24]) |
| 1065 | f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + ((w[4] - 16 + ((w[8] + w[24] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1066 | if (w[25]) |
| 1067 | f[(w[0] + ((w[1] + ((w[3] - 32 + ((w[5] - 16 + ((w[9] + w[25] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1068 | if (w[26]) |
| 1069 | f[(w[0] + ((w[1] - 64 + ((w[2] + ((w[6] - 16 + ((w[10] + w[26] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1070 | if (w[27]) |
| 1071 | f[(w[0] + ((w[1] + ((w[3] + ((w[7] - 16 + ((w[11] + w[27] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1072 | if (w[28]) |
| 1073 | f[(w[0] + ((w[1] - 64 + ((w[2] - 32 + ((w[4] + ((w[12] + w[28] - 1) % 15)) % 31)) % 63)) % 127) + 1) % 1024].mask |= frqt; |
| 1074 | |
| 1075 | return 0; |
| 1076 | } |
| 1077 | /* 10..111. */ |
| 1078 | if ((cd[0] & 0xce & mask) == 0x8e) { |
| 1079 | /* Variable bitmap format (can be any length >= 3) */ |
| 1080 | uint16_t orig = 0; |
| 1081 | struct gsm48_var_bit *r = (struct gsm48_var_bit *)cd; |
| 1082 | |
| 1083 | if (len < 3) |
| 1084 | return -EINVAL; |
| 1085 | orig = (r->orig_arfcn_hi << 9) | (r->orig_arfcn_mid << 1) | r->orig_arfcn_lo; |
| 1086 | f[orig].mask |= frqt; |
| 1087 | for (i = 1; 2 + (i >> 3) < len; i++) |
| 1088 | if ((cd[2 + (i >> 3)] & (0x80 >> (i & 7)))) |
| 1089 | f[(orig + i) % 1024].mask |= frqt; |
| 1090 | |
| 1091 | return 0; |
| 1092 | } |
| 1093 | |
| 1094 | return 0; |
| 1095 | } |