Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: l3dss1.c,v 2.32.2.3 2004/01/13 14:31:25 keil Exp $ |
| 2 | * |
| 3 | * EURO/DSS1 D-channel protocol |
| 4 | * |
| 5 | * German 1TR6 D-channel protocol |
| 6 | * |
| 7 | * Author Karsten Keil |
| 8 | * based on the teles driver from Jan den Ouden |
| 9 | * Copyright by Karsten Keil <keil@isdn4linux.de> |
| 10 | * |
| 11 | * This software may be used and distributed according to the terms |
| 12 | * of the GNU General Public License, incorporated herein by reference. |
| 13 | * |
| 14 | * For changes and modifications please read |
| 15 | * Documentation/isdn/HiSax.cert |
| 16 | * |
| 17 | * Thanks to Jan den Ouden |
| 18 | * Fritz Elfert |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #include "hisax.h" |
| 23 | #include "isdnl3.h" |
| 24 | #include "l3dss1.h" |
| 25 | #include <linux/ctype.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | |
| 27 | extern char *HiSax_getrev(const char *revision); |
Adrian Bunk | 672c3fd | 2005-06-25 14:59:18 -0700 | [diff] [blame] | 28 | static const char *dss1_revision = "$Revision: 2.32.2.3 $"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | #define EXT_BEARER_CAPS 1 |
| 31 | |
| 32 | #define MsgHead(ptr, cref, mty) \ |
| 33 | *ptr++ = 0x8; \ |
| 34 | if (cref == -1) { \ |
| 35 | *ptr++ = 0x0; \ |
| 36 | } else { \ |
| 37 | *ptr++ = 0x1; \ |
| 38 | *ptr++ = cref^0x80; \ |
| 39 | } \ |
| 40 | *ptr++ = mty |
| 41 | |
| 42 | |
| 43 | /**********************************************/ |
| 44 | /* get a new invoke id for remote operations. */ |
| 45 | /* Only a return value != 0 is valid */ |
| 46 | /**********************************************/ |
| 47 | static unsigned char new_invoke_id(struct PStack *p) |
| 48 | { |
| 49 | unsigned char retval; |
| 50 | int i; |
| 51 | |
| 52 | i = 32; /* maximum search depth */ |
| 53 | |
| 54 | retval = p->prot.dss1.last_invoke_id + 1; /* try new id */ |
| 55 | while ((i) && (p->prot.dss1.invoke_used[retval >> 3] == 0xFF)) { |
| 56 | p->prot.dss1.last_invoke_id = (retval & 0xF8) + 8; |
| 57 | i--; |
| 58 | } |
| 59 | if (i) { |
| 60 | while (p->prot.dss1.invoke_used[retval >> 3] & (1 << (retval & 7))) |
| 61 | retval++; |
| 62 | } else |
| 63 | retval = 0; |
| 64 | p->prot.dss1.last_invoke_id = retval; |
| 65 | p->prot.dss1.invoke_used[retval >> 3] |= (1 << (retval & 7)); |
| 66 | return(retval); |
| 67 | } /* new_invoke_id */ |
| 68 | |
| 69 | /*************************/ |
| 70 | /* free a used invoke id */ |
| 71 | /*************************/ |
| 72 | static void free_invoke_id(struct PStack *p, unsigned char id) |
| 73 | { |
| 74 | |
| 75 | if (!id) return; /* 0 = invalid value */ |
| 76 | |
| 77 | p->prot.dss1.invoke_used[id >> 3] &= ~(1 << (id & 7)); |
| 78 | } /* free_invoke_id */ |
| 79 | |
| 80 | |
| 81 | /**********************************************************/ |
| 82 | /* create a new l3 process and fill in dss1 specific data */ |
| 83 | /**********************************************************/ |
| 84 | static struct l3_process |
| 85 | *dss1_new_l3_process(struct PStack *st, int cr) |
| 86 | { struct l3_process *proc; |
| 87 | |
| 88 | if (!(proc = new_l3_process(st, cr))) |
| 89 | return(NULL); |
| 90 | |
| 91 | proc->prot.dss1.invoke_id = 0; |
| 92 | proc->prot.dss1.remote_operation = 0; |
| 93 | proc->prot.dss1.uus1_data[0] = '\0'; |
| 94 | |
| 95 | return(proc); |
| 96 | } /* dss1_new_l3_process */ |
| 97 | |
| 98 | /************************************************/ |
| 99 | /* free a l3 process and all dss1 specific data */ |
| 100 | /************************************************/ |
| 101 | static void |
| 102 | dss1_release_l3_process(struct l3_process *p) |
| 103 | { |
| 104 | free_invoke_id(p->st,p->prot.dss1.invoke_id); |
| 105 | release_l3_process(p); |
| 106 | } /* dss1_release_l3_process */ |
| 107 | |
| 108 | /********************************************************/ |
| 109 | /* search a process with invoke id id and dummy callref */ |
| 110 | /********************************************************/ |
| 111 | static struct l3_process * |
| 112 | l3dss1_search_dummy_proc(struct PStack *st, int id) |
| 113 | { struct l3_process *pc = st->l3.proc; /* start of processes */ |
| 114 | |
| 115 | if (!id) return(NULL); |
| 116 | |
| 117 | while (pc) |
| 118 | { if ((pc->callref == -1) && (pc->prot.dss1.invoke_id == id)) |
| 119 | return(pc); |
| 120 | pc = pc->next; |
| 121 | } |
| 122 | return(NULL); |
| 123 | } /* l3dss1_search_dummy_proc */ |
| 124 | |
| 125 | /*******************************************************************/ |
| 126 | /* called when a facility message with a dummy callref is received */ |
| 127 | /* and a return result is delivered. id specifies the invoke id. */ |
| 128 | /*******************************************************************/ |
| 129 | static void |
| 130 | l3dss1_dummy_return_result(struct PStack *st, int id, u_char *p, u_char nlen) |
| 131 | { isdn_ctrl ic; |
| 132 | struct IsdnCardState *cs; |
| 133 | struct l3_process *pc = NULL; |
| 134 | |
| 135 | if ((pc = l3dss1_search_dummy_proc(st, id))) |
| 136 | { L3DelTimer(&pc->timer); /* remove timer */ |
| 137 | |
| 138 | cs = pc->st->l1.hardware; |
| 139 | ic.driver = cs->myid; |
| 140 | ic.command = ISDN_STAT_PROT; |
| 141 | ic.arg = DSS1_STAT_INVOKE_RES; |
| 142 | ic.parm.dss1_io.hl_id = pc->prot.dss1.invoke_id; |
| 143 | ic.parm.dss1_io.ll_id = pc->prot.dss1.ll_id; |
| 144 | ic.parm.dss1_io.proc = pc->prot.dss1.proc; |
| 145 | ic.parm.dss1_io.timeout= 0; |
| 146 | ic.parm.dss1_io.datalen = nlen; |
| 147 | ic.parm.dss1_io.data = p; |
| 148 | free_invoke_id(pc->st, pc->prot.dss1.invoke_id); |
| 149 | pc->prot.dss1.invoke_id = 0; /* reset id */ |
| 150 | |
| 151 | cs->iif.statcallb(&ic); |
| 152 | dss1_release_l3_process(pc); |
| 153 | } |
| 154 | else |
| 155 | l3_debug(st, "dummy return result id=0x%x result len=%d",id,nlen); |
| 156 | } /* l3dss1_dummy_return_result */ |
| 157 | |
| 158 | /*******************************************************************/ |
| 159 | /* called when a facility message with a dummy callref is received */ |
| 160 | /* and a return error is delivered. id specifies the invoke id. */ |
| 161 | /*******************************************************************/ |
| 162 | static void |
| 163 | l3dss1_dummy_error_return(struct PStack *st, int id, ulong error) |
| 164 | { isdn_ctrl ic; |
| 165 | struct IsdnCardState *cs; |
| 166 | struct l3_process *pc = NULL; |
| 167 | |
| 168 | if ((pc = l3dss1_search_dummy_proc(st, id))) |
| 169 | { L3DelTimer(&pc->timer); /* remove timer */ |
| 170 | |
| 171 | cs = pc->st->l1.hardware; |
| 172 | ic.driver = cs->myid; |
| 173 | ic.command = ISDN_STAT_PROT; |
| 174 | ic.arg = DSS1_STAT_INVOKE_ERR; |
| 175 | ic.parm.dss1_io.hl_id = pc->prot.dss1.invoke_id; |
| 176 | ic.parm.dss1_io.ll_id = pc->prot.dss1.ll_id; |
| 177 | ic.parm.dss1_io.proc = pc->prot.dss1.proc; |
| 178 | ic.parm.dss1_io.timeout= error; |
| 179 | ic.parm.dss1_io.datalen = 0; |
| 180 | ic.parm.dss1_io.data = NULL; |
| 181 | free_invoke_id(pc->st, pc->prot.dss1.invoke_id); |
| 182 | pc->prot.dss1.invoke_id = 0; /* reset id */ |
| 183 | |
| 184 | cs->iif.statcallb(&ic); |
| 185 | dss1_release_l3_process(pc); |
| 186 | } |
| 187 | else |
| 188 | l3_debug(st, "dummy return error id=0x%x error=0x%lx",id,error); |
| 189 | } /* l3dss1_error_return */ |
| 190 | |
| 191 | /*******************************************************************/ |
| 192 | /* called when a facility message with a dummy callref is received */ |
| 193 | /* and a invoke is delivered. id specifies the invoke id. */ |
| 194 | /*******************************************************************/ |
| 195 | static void |
| 196 | l3dss1_dummy_invoke(struct PStack *st, int cr, int id, |
| 197 | int ident, u_char *p, u_char nlen) |
| 198 | { isdn_ctrl ic; |
| 199 | struct IsdnCardState *cs; |
| 200 | |
| 201 | l3_debug(st, "dummy invoke %s id=0x%x ident=0x%x datalen=%d", |
| 202 | (cr == -1) ? "local" : "broadcast",id,ident,nlen); |
| 203 | if (cr >= -1) return; /* ignore local data */ |
| 204 | |
| 205 | cs = st->l1.hardware; |
| 206 | ic.driver = cs->myid; |
| 207 | ic.command = ISDN_STAT_PROT; |
| 208 | ic.arg = DSS1_STAT_INVOKE_BRD; |
| 209 | ic.parm.dss1_io.hl_id = id; |
| 210 | ic.parm.dss1_io.ll_id = 0; |
| 211 | ic.parm.dss1_io.proc = ident; |
| 212 | ic.parm.dss1_io.timeout= 0; |
| 213 | ic.parm.dss1_io.datalen = nlen; |
| 214 | ic.parm.dss1_io.data = p; |
| 215 | |
| 216 | cs->iif.statcallb(&ic); |
| 217 | } /* l3dss1_dummy_invoke */ |
| 218 | |
| 219 | static void |
| 220 | l3dss1_parse_facility(struct PStack *st, struct l3_process *pc, |
| 221 | int cr, u_char * p) |
| 222 | { |
| 223 | int qd_len = 0; |
| 224 | unsigned char nlen = 0, ilen, cp_tag; |
| 225 | int ident, id; |
| 226 | ulong err_ret; |
| 227 | |
| 228 | if (pc) |
| 229 | st = pc->st; /* valid Stack */ |
| 230 | else |
| 231 | if ((!st) || (cr >= 0)) return; /* neither pc nor st specified */ |
| 232 | |
| 233 | p++; |
| 234 | qd_len = *p++; |
| 235 | if (qd_len == 0) { |
| 236 | l3_debug(st, "qd_len == 0"); |
| 237 | return; |
| 238 | } |
| 239 | if ((*p & 0x1F) != 0x11) { /* Service discriminator, supplementary service */ |
| 240 | l3_debug(st, "supplementary service != 0x11"); |
| 241 | return; |
| 242 | } |
| 243 | while (qd_len > 0 && !(*p & 0x80)) { /* extension ? */ |
| 244 | p++; |
| 245 | qd_len--; |
| 246 | } |
| 247 | if (qd_len < 2) { |
| 248 | l3_debug(st, "qd_len < 2"); |
| 249 | return; |
| 250 | } |
| 251 | p++; |
| 252 | qd_len--; |
| 253 | if ((*p & 0xE0) != 0xA0) { /* class and form */ |
| 254 | l3_debug(st, "class and form != 0xA0"); |
| 255 | return; |
| 256 | } |
| 257 | |
| 258 | cp_tag = *p & 0x1F; /* remember tag value */ |
| 259 | |
| 260 | p++; |
| 261 | qd_len--; |
| 262 | if (qd_len < 1) |
| 263 | { l3_debug(st, "qd_len < 1"); |
| 264 | return; |
| 265 | } |
| 266 | if (*p & 0x80) |
| 267 | { /* length format indefinite or limited */ |
| 268 | nlen = *p++ & 0x7F; /* number of len bytes or indefinite */ |
| 269 | if ((qd_len-- < ((!nlen) ? 3 : (1 + nlen))) || |
| 270 | (nlen > 1)) |
| 271 | { l3_debug(st, "length format error or not implemented"); |
| 272 | return; |
| 273 | } |
| 274 | if (nlen == 1) |
| 275 | { nlen = *p++; /* complete length */ |
| 276 | qd_len--; |
| 277 | } |
| 278 | else |
| 279 | { qd_len -= 2; /* trailing null bytes */ |
| 280 | if ((*(p+qd_len)) || (*(p+qd_len+1))) |
| 281 | { l3_debug(st,"length format indefinite error"); |
| 282 | return; |
| 283 | } |
| 284 | nlen = qd_len; |
| 285 | } |
| 286 | } |
| 287 | else |
| 288 | { nlen = *p++; |
| 289 | qd_len--; |
| 290 | } |
| 291 | if (qd_len < nlen) |
| 292 | { l3_debug(st, "qd_len < nlen"); |
| 293 | return; |
| 294 | } |
| 295 | qd_len -= nlen; |
| 296 | |
| 297 | if (nlen < 2) |
| 298 | { l3_debug(st, "nlen < 2"); |
| 299 | return; |
| 300 | } |
| 301 | if (*p != 0x02) |
| 302 | { /* invoke identifier tag */ |
| 303 | l3_debug(st, "invoke identifier tag !=0x02"); |
| 304 | return; |
| 305 | } |
| 306 | p++; |
| 307 | nlen--; |
| 308 | if (*p & 0x80) |
| 309 | { /* length format */ |
| 310 | l3_debug(st, "invoke id length format 2"); |
| 311 | return; |
| 312 | } |
| 313 | ilen = *p++; |
| 314 | nlen--; |
| 315 | if (ilen > nlen || ilen == 0) |
| 316 | { l3_debug(st, "ilen > nlen || ilen == 0"); |
| 317 | return; |
| 318 | } |
| 319 | nlen -= ilen; |
| 320 | id = 0; |
| 321 | while (ilen > 0) |
| 322 | { id = (id << 8) | (*p++ & 0xFF); /* invoke identifier */ |
| 323 | ilen--; |
| 324 | } |
| 325 | |
| 326 | switch (cp_tag) { /* component tag */ |
| 327 | case 1: /* invoke */ |
| 328 | if (nlen < 2) { |
| 329 | l3_debug(st, "nlen < 2 22"); |
| 330 | return; |
| 331 | } |
| 332 | if (*p != 0x02) { /* operation value */ |
| 333 | l3_debug(st, "operation value !=0x02"); |
| 334 | return; |
| 335 | } |
| 336 | p++; |
| 337 | nlen--; |
| 338 | ilen = *p++; |
| 339 | nlen--; |
| 340 | if (ilen > nlen || ilen == 0) { |
| 341 | l3_debug(st, "ilen > nlen || ilen == 0 22"); |
| 342 | return; |
| 343 | } |
| 344 | nlen -= ilen; |
| 345 | ident = 0; |
| 346 | while (ilen > 0) { |
| 347 | ident = (ident << 8) | (*p++ & 0xFF); |
| 348 | ilen--; |
| 349 | } |
| 350 | |
| 351 | if (!pc) |
| 352 | { l3dss1_dummy_invoke(st, cr, id, ident, p, nlen); |
| 353 | return; |
| 354 | } |
Olaf Hering | 44456d3 | 2005-07-27 11:45:17 -0700 | [diff] [blame] | 355 | #ifdef HISAX_DE_AOC |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | { |
| 357 | |
| 358 | #define FOO1(s,a,b) \ |
| 359 | while(nlen > 1) { \ |
| 360 | int ilen = p[1]; \ |
| 361 | if(nlen < ilen+2) { \ |
| 362 | l3_debug(st, "FOO1 nlen < ilen+2"); \ |
| 363 | return; \ |
| 364 | } \ |
| 365 | nlen -= ilen+2; \ |
| 366 | if((*p & 0xFF) == (a)) { \ |
| 367 | int nlen = ilen; \ |
| 368 | p += 2; \ |
| 369 | b; \ |
| 370 | } else { \ |
| 371 | p += ilen+2; \ |
| 372 | } \ |
| 373 | } |
| 374 | |
| 375 | switch (ident) { |
| 376 | case 0x22: /* during */ |
| 377 | FOO1("1A", 0x30, FOO1("1C", 0xA1, FOO1("1D", 0x30, FOO1("1E", 0x02, ( { |
| 378 | ident = 0; |
| 379 | nlen = (nlen)?nlen:0; /* Make gcc happy */ |
| 380 | while (ilen > 0) { |
| 381 | ident = (ident << 8) | *p++; |
| 382 | ilen--; |
| 383 | } |
| 384 | if (ident > pc->para.chargeinfo) { |
| 385 | pc->para.chargeinfo = ident; |
| 386 | st->l3.l3l4(st, CC_CHARGE | INDICATION, pc); |
| 387 | } |
| 388 | if (st->l3.debug & L3_DEB_CHARGE) { |
| 389 | if (*(p + 2) == 0) { |
| 390 | l3_debug(st, "charging info during %d", pc->para.chargeinfo); |
| 391 | } |
| 392 | else { |
| 393 | l3_debug(st, "charging info final %d", pc->para.chargeinfo); |
| 394 | } |
| 395 | } |
| 396 | } |
| 397 | ))))) |
| 398 | break; |
| 399 | case 0x24: /* final */ |
| 400 | FOO1("2A", 0x30, FOO1("2B", 0x30, FOO1("2C", 0xA1, FOO1("2D", 0x30, FOO1("2E", 0x02, ( { |
| 401 | ident = 0; |
| 402 | nlen = (nlen)?nlen:0; /* Make gcc happy */ |
| 403 | while (ilen > 0) { |
| 404 | ident = (ident << 8) | *p++; |
| 405 | ilen--; |
| 406 | } |
| 407 | if (ident > pc->para.chargeinfo) { |
| 408 | pc->para.chargeinfo = ident; |
| 409 | st->l3.l3l4(st, CC_CHARGE | INDICATION, pc); |
| 410 | } |
| 411 | if (st->l3.debug & L3_DEB_CHARGE) { |
| 412 | l3_debug(st, "charging info final %d", pc->para.chargeinfo); |
| 413 | } |
| 414 | } |
| 415 | )))))) |
| 416 | break; |
| 417 | default: |
| 418 | l3_debug(st, "invoke break invalid ident %02x",ident); |
| 419 | break; |
| 420 | } |
| 421 | #undef FOO1 |
| 422 | |
| 423 | } |
| 424 | #else /* not HISAX_DE_AOC */ |
| 425 | l3_debug(st, "invoke break"); |
| 426 | #endif /* not HISAX_DE_AOC */ |
| 427 | break; |
| 428 | case 2: /* return result */ |
| 429 | /* if no process available handle separately */ |
| 430 | if (!pc) |
| 431 | { if (cr == -1) |
| 432 | l3dss1_dummy_return_result(st, id, p, nlen); |
| 433 | return; |
| 434 | } |
| 435 | if ((pc->prot.dss1.invoke_id) && (pc->prot.dss1.invoke_id == id)) |
| 436 | { /* Diversion successful */ |
| 437 | free_invoke_id(st,pc->prot.dss1.invoke_id); |
| 438 | pc->prot.dss1.remote_result = 0; /* success */ |
| 439 | pc->prot.dss1.invoke_id = 0; |
| 440 | pc->redir_result = pc->prot.dss1.remote_result; |
| 441 | st->l3.l3l4(st, CC_REDIR | INDICATION, pc); } /* Diversion successful */ |
| 442 | else |
| 443 | l3_debug(st,"return error unknown identifier"); |
| 444 | break; |
| 445 | case 3: /* return error */ |
| 446 | err_ret = 0; |
| 447 | if (nlen < 2) |
| 448 | { l3_debug(st, "return error nlen < 2"); |
| 449 | return; |
| 450 | } |
| 451 | if (*p != 0x02) |
| 452 | { /* result tag */ |
| 453 | l3_debug(st, "invoke error tag !=0x02"); |
| 454 | return; |
| 455 | } |
| 456 | p++; |
| 457 | nlen--; |
| 458 | if (*p > 4) |
| 459 | { /* length format */ |
| 460 | l3_debug(st, "invoke return errlen > 4 "); |
| 461 | return; |
| 462 | } |
| 463 | ilen = *p++; |
| 464 | nlen--; |
| 465 | if (ilen > nlen || ilen == 0) |
| 466 | { l3_debug(st, "error return ilen > nlen || ilen == 0"); |
| 467 | return; |
| 468 | } |
| 469 | nlen -= ilen; |
| 470 | while (ilen > 0) |
| 471 | { err_ret = (err_ret << 8) | (*p++ & 0xFF); /* error value */ |
| 472 | ilen--; |
| 473 | } |
| 474 | /* if no process available handle separately */ |
| 475 | if (!pc) |
| 476 | { if (cr == -1) |
| 477 | l3dss1_dummy_error_return(st, id, err_ret); |
| 478 | return; |
| 479 | } |
| 480 | if ((pc->prot.dss1.invoke_id) && (pc->prot.dss1.invoke_id == id)) |
| 481 | { /* Deflection error */ |
| 482 | free_invoke_id(st,pc->prot.dss1.invoke_id); |
| 483 | pc->prot.dss1.remote_result = err_ret; /* result */ |
| 484 | pc->prot.dss1.invoke_id = 0; |
| 485 | pc->redir_result = pc->prot.dss1.remote_result; |
| 486 | st->l3.l3l4(st, CC_REDIR | INDICATION, pc); |
| 487 | } /* Deflection error */ |
| 488 | else |
| 489 | l3_debug(st,"return result unknown identifier"); |
| 490 | break; |
| 491 | default: |
| 492 | l3_debug(st, "facility default break tag=0x%02x",cp_tag); |
| 493 | break; |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | static void |
| 498 | l3dss1_message(struct l3_process *pc, u_char mt) |
| 499 | { |
| 500 | struct sk_buff *skb; |
| 501 | u_char *p; |
| 502 | |
| 503 | if (!(skb = l3_alloc_skb(4))) |
| 504 | return; |
| 505 | p = skb_put(skb, 4); |
| 506 | MsgHead(p, pc->callref, mt); |
| 507 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 508 | } |
| 509 | |
| 510 | static void |
| 511 | l3dss1_message_cause(struct l3_process *pc, u_char mt, u_char cause) |
| 512 | { |
| 513 | struct sk_buff *skb; |
| 514 | u_char tmp[16]; |
| 515 | u_char *p = tmp; |
| 516 | int l; |
| 517 | |
| 518 | MsgHead(p, pc->callref, mt); |
| 519 | *p++ = IE_CAUSE; |
| 520 | *p++ = 0x2; |
| 521 | *p++ = 0x80; |
| 522 | *p++ = cause | 0x80; |
| 523 | |
| 524 | l = p - tmp; |
| 525 | if (!(skb = l3_alloc_skb(l))) |
| 526 | return; |
| 527 | memcpy(skb_put(skb, l), tmp, l); |
| 528 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 529 | } |
| 530 | |
| 531 | static void |
| 532 | l3dss1_status_send(struct l3_process *pc, u_char pr, void *arg) |
| 533 | { |
| 534 | u_char tmp[16]; |
| 535 | u_char *p = tmp; |
| 536 | int l; |
| 537 | struct sk_buff *skb; |
| 538 | |
| 539 | MsgHead(p, pc->callref, MT_STATUS); |
| 540 | |
| 541 | *p++ = IE_CAUSE; |
| 542 | *p++ = 0x2; |
| 543 | *p++ = 0x80; |
| 544 | *p++ = pc->para.cause | 0x80; |
| 545 | |
| 546 | *p++ = IE_CALL_STATE; |
| 547 | *p++ = 0x1; |
| 548 | *p++ = pc->state & 0x3f; |
| 549 | |
| 550 | l = p - tmp; |
| 551 | if (!(skb = l3_alloc_skb(l))) |
| 552 | return; |
| 553 | memcpy(skb_put(skb, l), tmp, l); |
| 554 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 555 | } |
| 556 | |
| 557 | static void |
| 558 | l3dss1_msg_without_setup(struct l3_process *pc, u_char pr, void *arg) |
| 559 | { |
| 560 | /* This routine is called if here was no SETUP made (checks in dss1up and in |
| 561 | * l3dss1_setup) and a RELEASE_COMPLETE have to be sent with an error code |
| 562 | * MT_STATUS_ENQUIRE in the NULL state is handled too |
| 563 | */ |
| 564 | u_char tmp[16]; |
| 565 | u_char *p = tmp; |
| 566 | int l; |
| 567 | struct sk_buff *skb; |
| 568 | |
| 569 | switch (pc->para.cause) { |
| 570 | case 81: /* invalid callreference */ |
| 571 | case 88: /* incomp destination */ |
| 572 | case 96: /* mandory IE missing */ |
| 573 | case 100: /* invalid IE contents */ |
| 574 | case 101: /* incompatible Callstate */ |
| 575 | MsgHead(p, pc->callref, MT_RELEASE_COMPLETE); |
| 576 | *p++ = IE_CAUSE; |
| 577 | *p++ = 0x2; |
| 578 | *p++ = 0x80; |
| 579 | *p++ = pc->para.cause | 0x80; |
| 580 | break; |
| 581 | default: |
| 582 | printk(KERN_ERR "HiSax l3dss1_msg_without_setup wrong cause %d\n", |
| 583 | pc->para.cause); |
| 584 | return; |
| 585 | } |
| 586 | l = p - tmp; |
| 587 | if (!(skb = l3_alloc_skb(l))) |
| 588 | return; |
| 589 | memcpy(skb_put(skb, l), tmp, l); |
| 590 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 591 | dss1_release_l3_process(pc); |
| 592 | } |
| 593 | |
| 594 | static int ie_ALERTING[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1, |
| 595 | IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, IE_HLC, |
| 596 | IE_USER_USER, -1}; |
| 597 | static int ie_CALL_PROCEEDING[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1, |
| 598 | IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_HLC, -1}; |
| 599 | static int ie_CONNECT[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1, |
| 600 | IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_DATE, IE_SIGNAL, |
| 601 | IE_CONNECT_PN, IE_CONNECT_SUB, IE_LLC, IE_HLC, IE_USER_USER, -1}; |
| 602 | static int ie_CONNECT_ACKNOWLEDGE[] = {IE_CHANNEL_ID, IE_DISPLAY, IE_SIGNAL, -1}; |
| 603 | static int ie_DISCONNECT[] = {IE_CAUSE | IE_MANDATORY, IE_FACILITY, |
| 604 | IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, IE_USER_USER, -1}; |
| 605 | static int ie_INFORMATION[] = {IE_COMPLETE, IE_DISPLAY, IE_KEYPAD, IE_SIGNAL, |
| 606 | IE_CALLED_PN, -1}; |
| 607 | static int ie_NOTIFY[] = {IE_BEARER, IE_NOTIFY | IE_MANDATORY, IE_DISPLAY, -1}; |
| 608 | static int ie_PROGRESS[] = {IE_BEARER, IE_CAUSE, IE_FACILITY, IE_PROGRESS | |
| 609 | IE_MANDATORY, IE_DISPLAY, IE_HLC, IE_USER_USER, -1}; |
| 610 | static int ie_RELEASE[] = {IE_CAUSE | IE_MANDATORY_1, IE_FACILITY, IE_DISPLAY, |
| 611 | IE_SIGNAL, IE_USER_USER, -1}; |
| 612 | /* a RELEASE_COMPLETE with errors don't require special actions |
| 613 | static int ie_RELEASE_COMPLETE[] = {IE_CAUSE | IE_MANDATORY_1, IE_DISPLAY, IE_SIGNAL, IE_USER_USER, -1}; |
| 614 | */ |
| 615 | static int ie_RESUME_ACKNOWLEDGE[] = {IE_CHANNEL_ID| IE_MANDATORY, IE_FACILITY, |
| 616 | IE_DISPLAY, -1}; |
| 617 | static int ie_RESUME_REJECT[] = {IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1}; |
| 618 | static int ie_SETUP[] = {IE_COMPLETE, IE_BEARER | IE_MANDATORY, |
| 619 | IE_CHANNEL_ID| IE_MANDATORY, IE_FACILITY, IE_PROGRESS, |
| 620 | IE_NET_FAC, IE_DISPLAY, IE_KEYPAD, IE_SIGNAL, IE_CALLING_PN, |
| 621 | IE_CALLING_SUB, IE_CALLED_PN, IE_CALLED_SUB, IE_REDIR_NR, |
| 622 | IE_LLC, IE_HLC, IE_USER_USER, -1}; |
| 623 | static int ie_SETUP_ACKNOWLEDGE[] = {IE_CHANNEL_ID | IE_MANDATORY, IE_FACILITY, |
| 624 | IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, -1}; |
| 625 | static int ie_STATUS[] = {IE_CAUSE | IE_MANDATORY, IE_CALL_STATE | |
| 626 | IE_MANDATORY, IE_DISPLAY, -1}; |
| 627 | static int ie_STATUS_ENQUIRY[] = {IE_DISPLAY, -1}; |
| 628 | static int ie_SUSPEND_ACKNOWLEDGE[] = {IE_DISPLAY, IE_FACILITY, -1}; |
| 629 | static int ie_SUSPEND_REJECT[] = {IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1}; |
| 630 | /* not used |
| 631 | * static int ie_CONGESTION_CONTROL[] = {IE_CONGESTION | IE_MANDATORY, |
| 632 | * IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1}; |
| 633 | * static int ie_USER_INFORMATION[] = {IE_MORE_DATA, IE_USER_USER | IE_MANDATORY, -1}; |
| 634 | * static int ie_RESTART[] = {IE_CHANNEL_ID, IE_DISPLAY, IE_RESTART_IND | |
| 635 | * IE_MANDATORY, -1}; |
| 636 | */ |
| 637 | static int ie_FACILITY[] = {IE_FACILITY | IE_MANDATORY, IE_DISPLAY, -1}; |
| 638 | static int comp_required[] = {1,2,3,5,6,7,9,10,11,14,15,-1}; |
| 639 | static int l3_valid_states[] = {0,1,2,3,4,6,7,8,9,10,11,12,15,17,19,25,-1}; |
| 640 | |
| 641 | struct ie_len { |
| 642 | int ie; |
| 643 | int len; |
| 644 | }; |
| 645 | |
| 646 | static |
| 647 | struct ie_len max_ie_len[] = { |
| 648 | {IE_SEGMENT, 4}, |
| 649 | {IE_BEARER, 12}, |
| 650 | {IE_CAUSE, 32}, |
| 651 | {IE_CALL_ID, 10}, |
| 652 | {IE_CALL_STATE, 3}, |
| 653 | {IE_CHANNEL_ID, 34}, |
| 654 | {IE_FACILITY, 255}, |
| 655 | {IE_PROGRESS, 4}, |
| 656 | {IE_NET_FAC, 255}, |
| 657 | {IE_NOTIFY, 3}, |
| 658 | {IE_DISPLAY, 82}, |
| 659 | {IE_DATE, 8}, |
| 660 | {IE_KEYPAD, 34}, |
| 661 | {IE_SIGNAL, 3}, |
| 662 | {IE_INFORATE, 6}, |
| 663 | {IE_E2E_TDELAY, 11}, |
| 664 | {IE_TDELAY_SEL, 5}, |
| 665 | {IE_PACK_BINPARA, 3}, |
| 666 | {IE_PACK_WINSIZE, 4}, |
| 667 | {IE_PACK_SIZE, 4}, |
| 668 | {IE_CUG, 7}, |
| 669 | {IE_REV_CHARGE, 3}, |
| 670 | {IE_CALLING_PN, 24}, |
| 671 | {IE_CALLING_SUB, 23}, |
| 672 | {IE_CALLED_PN, 24}, |
| 673 | {IE_CALLED_SUB, 23}, |
| 674 | {IE_REDIR_NR, 255}, |
| 675 | {IE_TRANS_SEL, 255}, |
| 676 | {IE_RESTART_IND, 3}, |
| 677 | {IE_LLC, 18}, |
| 678 | {IE_HLC, 5}, |
| 679 | {IE_USER_USER, 131}, |
| 680 | {-1,0}, |
| 681 | }; |
| 682 | |
| 683 | static int |
| 684 | getmax_ie_len(u_char ie) { |
| 685 | int i = 0; |
| 686 | while (max_ie_len[i].ie != -1) { |
| 687 | if (max_ie_len[i].ie == ie) |
| 688 | return(max_ie_len[i].len); |
| 689 | i++; |
| 690 | } |
| 691 | return(255); |
| 692 | } |
| 693 | |
| 694 | static int |
| 695 | ie_in_set(struct l3_process *pc, u_char ie, int *checklist) { |
| 696 | int ret = 1; |
| 697 | |
| 698 | while (*checklist != -1) { |
| 699 | if ((*checklist & 0xff) == ie) { |
| 700 | if (ie & 0x80) |
| 701 | return(-ret); |
| 702 | else |
| 703 | return(ret); |
| 704 | } |
| 705 | ret++; |
| 706 | checklist++; |
| 707 | } |
| 708 | return(0); |
| 709 | } |
| 710 | |
| 711 | static int |
| 712 | check_infoelements(struct l3_process *pc, struct sk_buff *skb, int *checklist) |
| 713 | { |
| 714 | int *cl = checklist; |
| 715 | u_char mt; |
| 716 | u_char *p, ie; |
| 717 | int l, newpos, oldpos; |
| 718 | int err_seq = 0, err_len = 0, err_compr = 0, err_ureg = 0; |
| 719 | u_char codeset = 0; |
| 720 | u_char old_codeset = 0; |
| 721 | u_char codelock = 1; |
| 722 | |
| 723 | p = skb->data; |
| 724 | /* skip cr */ |
| 725 | p++; |
| 726 | l = (*p++) & 0xf; |
| 727 | p += l; |
| 728 | mt = *p++; |
| 729 | oldpos = 0; |
| 730 | while ((p - skb->data) < skb->len) { |
| 731 | if ((*p & 0xf0) == 0x90) { /* shift codeset */ |
| 732 | old_codeset = codeset; |
| 733 | codeset = *p & 7; |
| 734 | if (*p & 0x08) |
| 735 | codelock = 0; |
| 736 | else |
| 737 | codelock = 1; |
| 738 | if (pc->debug & L3_DEB_CHECK) |
| 739 | l3_debug(pc->st, "check IE shift%scodeset %d->%d", |
| 740 | codelock ? " locking ": " ", old_codeset, codeset); |
| 741 | p++; |
| 742 | continue; |
| 743 | } |
| 744 | if (!codeset) { /* only codeset 0 */ |
| 745 | if ((newpos = ie_in_set(pc, *p, cl))) { |
| 746 | if (newpos > 0) { |
| 747 | if (newpos < oldpos) |
| 748 | err_seq++; |
| 749 | else |
| 750 | oldpos = newpos; |
| 751 | } |
| 752 | } else { |
| 753 | if (ie_in_set(pc, *p, comp_required)) |
| 754 | err_compr++; |
| 755 | else |
| 756 | err_ureg++; |
| 757 | } |
| 758 | } |
| 759 | ie = *p++; |
| 760 | if (ie & 0x80) { |
| 761 | l = 1; |
| 762 | } else { |
| 763 | l = *p++; |
| 764 | p += l; |
| 765 | l += 2; |
| 766 | } |
| 767 | if (!codeset && (l > getmax_ie_len(ie))) |
| 768 | err_len++; |
| 769 | if (!codelock) { |
| 770 | if (pc->debug & L3_DEB_CHECK) |
| 771 | l3_debug(pc->st, "check IE shift back codeset %d->%d", |
| 772 | codeset, old_codeset); |
| 773 | codeset = old_codeset; |
| 774 | codelock = 1; |
| 775 | } |
| 776 | } |
| 777 | if (err_compr | err_ureg | err_len | err_seq) { |
| 778 | if (pc->debug & L3_DEB_CHECK) |
| 779 | l3_debug(pc->st, "check IE MT(%x) %d/%d/%d/%d", |
| 780 | mt, err_compr, err_ureg, err_len, err_seq); |
| 781 | if (err_compr) |
| 782 | return(ERR_IE_COMPREHENSION); |
| 783 | if (err_ureg) |
| 784 | return(ERR_IE_UNRECOGNIZED); |
| 785 | if (err_len) |
| 786 | return(ERR_IE_LENGTH); |
| 787 | if (err_seq) |
| 788 | return(ERR_IE_SEQUENCE); |
| 789 | } |
| 790 | return(0); |
| 791 | } |
| 792 | |
| 793 | /* verify if a message type exists and contain no IE error */ |
| 794 | static int |
| 795 | l3dss1_check_messagetype_validity(struct l3_process *pc, int mt, void *arg) |
| 796 | { |
| 797 | switch (mt) { |
| 798 | case MT_ALERTING: |
| 799 | case MT_CALL_PROCEEDING: |
| 800 | case MT_CONNECT: |
| 801 | case MT_CONNECT_ACKNOWLEDGE: |
| 802 | case MT_DISCONNECT: |
| 803 | case MT_INFORMATION: |
| 804 | case MT_FACILITY: |
| 805 | case MT_NOTIFY: |
| 806 | case MT_PROGRESS: |
| 807 | case MT_RELEASE: |
| 808 | case MT_RELEASE_COMPLETE: |
| 809 | case MT_SETUP: |
| 810 | case MT_SETUP_ACKNOWLEDGE: |
| 811 | case MT_RESUME_ACKNOWLEDGE: |
| 812 | case MT_RESUME_REJECT: |
| 813 | case MT_SUSPEND_ACKNOWLEDGE: |
| 814 | case MT_SUSPEND_REJECT: |
| 815 | case MT_USER_INFORMATION: |
| 816 | case MT_RESTART: |
| 817 | case MT_RESTART_ACKNOWLEDGE: |
| 818 | case MT_CONGESTION_CONTROL: |
| 819 | case MT_STATUS: |
| 820 | case MT_STATUS_ENQUIRY: |
| 821 | if (pc->debug & L3_DEB_CHECK) |
| 822 | l3_debug(pc->st, "l3dss1_check_messagetype_validity mt(%x) OK", mt); |
| 823 | break; |
| 824 | case MT_RESUME: /* RESUME only in user->net */ |
| 825 | case MT_SUSPEND: /* SUSPEND only in user->net */ |
| 826 | default: |
| 827 | if (pc->debug & (L3_DEB_CHECK | L3_DEB_WARN)) |
| 828 | l3_debug(pc->st, "l3dss1_check_messagetype_validity mt(%x) fail", mt); |
| 829 | pc->para.cause = 97; |
| 830 | l3dss1_status_send(pc, 0, NULL); |
| 831 | return(1); |
| 832 | } |
| 833 | return(0); |
| 834 | } |
| 835 | |
| 836 | static void |
| 837 | l3dss1_std_ie_err(struct l3_process *pc, int ret) { |
| 838 | |
| 839 | if (pc->debug & L3_DEB_CHECK) |
| 840 | l3_debug(pc->st, "check_infoelements ret %d", ret); |
| 841 | switch(ret) { |
| 842 | case 0: |
| 843 | break; |
| 844 | case ERR_IE_COMPREHENSION: |
| 845 | pc->para.cause = 96; |
| 846 | l3dss1_status_send(pc, 0, NULL); |
| 847 | break; |
| 848 | case ERR_IE_UNRECOGNIZED: |
| 849 | pc->para.cause = 99; |
| 850 | l3dss1_status_send(pc, 0, NULL); |
| 851 | break; |
| 852 | case ERR_IE_LENGTH: |
| 853 | pc->para.cause = 100; |
| 854 | l3dss1_status_send(pc, 0, NULL); |
| 855 | break; |
| 856 | case ERR_IE_SEQUENCE: |
| 857 | default: |
| 858 | break; |
| 859 | } |
| 860 | } |
| 861 | |
| 862 | static int |
| 863 | l3dss1_get_channel_id(struct l3_process *pc, struct sk_buff *skb) { |
| 864 | u_char *p; |
| 865 | |
| 866 | p = skb->data; |
| 867 | if ((p = findie(p, skb->len, IE_CHANNEL_ID, 0))) { |
| 868 | p++; |
| 869 | if (*p != 1) { /* len for BRI = 1 */ |
| 870 | if (pc->debug & L3_DEB_WARN) |
| 871 | l3_debug(pc->st, "wrong chid len %d", *p); |
| 872 | return (-2); |
| 873 | } |
| 874 | p++; |
| 875 | if (*p & 0x60) { /* only base rate interface */ |
| 876 | if (pc->debug & L3_DEB_WARN) |
| 877 | l3_debug(pc->st, "wrong chid %x", *p); |
| 878 | return (-3); |
| 879 | } |
| 880 | return(*p & 0x3); |
| 881 | } else |
| 882 | return(-1); |
| 883 | } |
| 884 | |
| 885 | static int |
| 886 | l3dss1_get_cause(struct l3_process *pc, struct sk_buff *skb) { |
| 887 | u_char l, i=0; |
| 888 | u_char *p; |
| 889 | |
| 890 | p = skb->data; |
| 891 | pc->para.cause = 31; |
| 892 | pc->para.loc = 0; |
| 893 | if ((p = findie(p, skb->len, IE_CAUSE, 0))) { |
| 894 | p++; |
| 895 | l = *p++; |
| 896 | if (l>30) |
| 897 | return(1); |
| 898 | if (l) { |
| 899 | pc->para.loc = *p++; |
| 900 | l--; |
| 901 | } else { |
| 902 | return(2); |
| 903 | } |
| 904 | if (l && !(pc->para.loc & 0x80)) { |
| 905 | l--; |
| 906 | p++; /* skip recommendation */ |
| 907 | } |
| 908 | if (l) { |
| 909 | pc->para.cause = *p++; |
| 910 | l--; |
| 911 | if (!(pc->para.cause & 0x80)) |
| 912 | return(3); |
| 913 | } else |
| 914 | return(4); |
| 915 | while (l && (i<6)) { |
| 916 | pc->para.diag[i++] = *p++; |
| 917 | l--; |
| 918 | } |
| 919 | } else |
| 920 | return(-1); |
| 921 | return(0); |
| 922 | } |
| 923 | |
| 924 | static void |
| 925 | l3dss1_msg_with_uus(struct l3_process *pc, u_char cmd) |
| 926 | { |
| 927 | struct sk_buff *skb; |
| 928 | u_char tmp[16+40]; |
| 929 | u_char *p = tmp; |
| 930 | int l; |
| 931 | |
| 932 | MsgHead(p, pc->callref, cmd); |
| 933 | |
| 934 | if (pc->prot.dss1.uus1_data[0]) |
| 935 | { *p++ = IE_USER_USER; /* UUS info element */ |
| 936 | *p++ = strlen(pc->prot.dss1.uus1_data) + 1; |
| 937 | *p++ = 0x04; /* IA5 chars */ |
| 938 | strcpy(p,pc->prot.dss1.uus1_data); |
| 939 | p += strlen(pc->prot.dss1.uus1_data); |
| 940 | pc->prot.dss1.uus1_data[0] = '\0'; |
| 941 | } |
| 942 | |
| 943 | l = p - tmp; |
| 944 | if (!(skb = l3_alloc_skb(l))) |
| 945 | return; |
| 946 | memcpy(skb_put(skb, l), tmp, l); |
| 947 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 948 | } /* l3dss1_msg_with_uus */ |
| 949 | |
| 950 | static void |
| 951 | l3dss1_release_req(struct l3_process *pc, u_char pr, void *arg) |
| 952 | { |
| 953 | StopAllL3Timer(pc); |
| 954 | newl3state(pc, 19); |
| 955 | if (!pc->prot.dss1.uus1_data[0]) |
| 956 | l3dss1_message(pc, MT_RELEASE); |
| 957 | else |
| 958 | l3dss1_msg_with_uus(pc, MT_RELEASE); |
| 959 | L3AddTimer(&pc->timer, T308, CC_T308_1); |
| 960 | } |
| 961 | |
| 962 | static void |
| 963 | l3dss1_release_cmpl(struct l3_process *pc, u_char pr, void *arg) |
| 964 | { |
| 965 | struct sk_buff *skb = arg; |
| 966 | int ret; |
| 967 | |
| 968 | if ((ret = l3dss1_get_cause(pc, skb))>0) { |
| 969 | if (pc->debug & L3_DEB_WARN) |
| 970 | l3_debug(pc->st, "RELCMPL get_cause ret(%d)",ret); |
| 971 | } else if (ret < 0) |
| 972 | pc->para.cause = NO_CAUSE; |
| 973 | StopAllL3Timer(pc); |
| 974 | newl3state(pc, 0); |
| 975 | pc->st->l3.l3l4(pc->st, CC_RELEASE | CONFIRM, pc); |
| 976 | dss1_release_l3_process(pc); |
| 977 | } |
| 978 | |
Olaf Hering | 44456d3 | 2005-07-27 11:45:17 -0700 | [diff] [blame] | 979 | #ifdef EXT_BEARER_CAPS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | |
| 981 | static u_char * |
| 982 | EncodeASyncParams(u_char * p, u_char si2) |
| 983 | { // 7c 06 88 90 21 42 00 bb |
| 984 | |
| 985 | p[0] = 0; |
| 986 | p[1] = 0x40; // Intermediate rate: 16 kbit/s jj 2000.02.19 |
| 987 | p[2] = 0x80; |
| 988 | if (si2 & 32) // 7 data bits |
| 989 | |
| 990 | p[2] += 16; |
| 991 | else // 8 data bits |
| 992 | |
| 993 | p[2] += 24; |
| 994 | |
| 995 | if (si2 & 16) // 2 stop bits |
| 996 | |
| 997 | p[2] += 96; |
| 998 | else // 1 stop bit |
| 999 | |
| 1000 | p[2] += 32; |
| 1001 | |
| 1002 | if (si2 & 8) // even parity |
| 1003 | |
| 1004 | p[2] += 2; |
| 1005 | else // no parity |
| 1006 | |
| 1007 | p[2] += 3; |
| 1008 | |
| 1009 | switch (si2 & 0x07) { |
| 1010 | case 0: |
| 1011 | p[0] = 66; // 1200 bit/s |
| 1012 | |
| 1013 | break; |
| 1014 | case 1: |
| 1015 | p[0] = 88; // 1200/75 bit/s |
| 1016 | |
| 1017 | break; |
| 1018 | case 2: |
| 1019 | p[0] = 87; // 75/1200 bit/s |
| 1020 | |
| 1021 | break; |
| 1022 | case 3: |
| 1023 | p[0] = 67; // 2400 bit/s |
| 1024 | |
| 1025 | break; |
| 1026 | case 4: |
| 1027 | p[0] = 69; // 4800 bit/s |
| 1028 | |
| 1029 | break; |
| 1030 | case 5: |
| 1031 | p[0] = 72; // 9600 bit/s |
| 1032 | |
| 1033 | break; |
| 1034 | case 6: |
| 1035 | p[0] = 73; // 14400 bit/s |
| 1036 | |
| 1037 | break; |
| 1038 | case 7: |
| 1039 | p[0] = 75; // 19200 bit/s |
| 1040 | |
| 1041 | break; |
| 1042 | } |
| 1043 | return p + 3; |
| 1044 | } |
| 1045 | |
| 1046 | static u_char |
| 1047 | EncodeSyncParams(u_char si2, u_char ai) |
| 1048 | { |
| 1049 | |
| 1050 | switch (si2) { |
| 1051 | case 0: |
| 1052 | return ai + 2; // 1200 bit/s |
| 1053 | |
| 1054 | case 1: |
| 1055 | return ai + 24; // 1200/75 bit/s |
| 1056 | |
| 1057 | case 2: |
| 1058 | return ai + 23; // 75/1200 bit/s |
| 1059 | |
| 1060 | case 3: |
| 1061 | return ai + 3; // 2400 bit/s |
| 1062 | |
| 1063 | case 4: |
| 1064 | return ai + 5; // 4800 bit/s |
| 1065 | |
| 1066 | case 5: |
| 1067 | return ai + 8; // 9600 bit/s |
| 1068 | |
| 1069 | case 6: |
| 1070 | return ai + 9; // 14400 bit/s |
| 1071 | |
| 1072 | case 7: |
| 1073 | return ai + 11; // 19200 bit/s |
| 1074 | |
| 1075 | case 8: |
| 1076 | return ai + 14; // 48000 bit/s |
| 1077 | |
| 1078 | case 9: |
| 1079 | return ai + 15; // 56000 bit/s |
| 1080 | |
| 1081 | case 15: |
| 1082 | return ai + 40; // negotiate bit/s |
| 1083 | |
| 1084 | default: |
| 1085 | break; |
| 1086 | } |
| 1087 | return ai; |
| 1088 | } |
| 1089 | |
| 1090 | |
| 1091 | static u_char |
| 1092 | DecodeASyncParams(u_char si2, u_char * p) |
| 1093 | { |
| 1094 | u_char info; |
| 1095 | |
| 1096 | switch (p[5]) { |
| 1097 | case 66: // 1200 bit/s |
| 1098 | |
| 1099 | break; // si2 don't change |
| 1100 | |
| 1101 | case 88: // 1200/75 bit/s |
| 1102 | |
| 1103 | si2 += 1; |
| 1104 | break; |
| 1105 | case 87: // 75/1200 bit/s |
| 1106 | |
| 1107 | si2 += 2; |
| 1108 | break; |
| 1109 | case 67: // 2400 bit/s |
| 1110 | |
| 1111 | si2 += 3; |
| 1112 | break; |
| 1113 | case 69: // 4800 bit/s |
| 1114 | |
| 1115 | si2 += 4; |
| 1116 | break; |
| 1117 | case 72: // 9600 bit/s |
| 1118 | |
| 1119 | si2 += 5; |
| 1120 | break; |
| 1121 | case 73: // 14400 bit/s |
| 1122 | |
| 1123 | si2 += 6; |
| 1124 | break; |
| 1125 | case 75: // 19200 bit/s |
| 1126 | |
| 1127 | si2 += 7; |
| 1128 | break; |
| 1129 | } |
| 1130 | |
| 1131 | info = p[7] & 0x7f; |
| 1132 | if ((info & 16) && (!(info & 8))) // 7 data bits |
| 1133 | |
| 1134 | si2 += 32; // else 8 data bits |
| 1135 | |
| 1136 | if ((info & 96) == 96) // 2 stop bits |
| 1137 | |
| 1138 | si2 += 16; // else 1 stop bit |
| 1139 | |
| 1140 | if ((info & 2) && (!(info & 1))) // even parity |
| 1141 | |
| 1142 | si2 += 8; // else no parity |
| 1143 | |
| 1144 | return si2; |
| 1145 | } |
| 1146 | |
| 1147 | |
| 1148 | static u_char |
| 1149 | DecodeSyncParams(u_char si2, u_char info) |
| 1150 | { |
| 1151 | info &= 0x7f; |
| 1152 | switch (info) { |
| 1153 | case 40: // bit/s negotiation failed ai := 165 not 175! |
| 1154 | |
| 1155 | return si2 + 15; |
| 1156 | case 15: // 56000 bit/s failed, ai := 0 not 169 ! |
| 1157 | |
| 1158 | return si2 + 9; |
| 1159 | case 14: // 48000 bit/s |
| 1160 | |
| 1161 | return si2 + 8; |
| 1162 | case 11: // 19200 bit/s |
| 1163 | |
| 1164 | return si2 + 7; |
| 1165 | case 9: // 14400 bit/s |
| 1166 | |
| 1167 | return si2 + 6; |
| 1168 | case 8: // 9600 bit/s |
| 1169 | |
| 1170 | return si2 + 5; |
| 1171 | case 5: // 4800 bit/s |
| 1172 | |
| 1173 | return si2 + 4; |
| 1174 | case 3: // 2400 bit/s |
| 1175 | |
| 1176 | return si2 + 3; |
| 1177 | case 23: // 75/1200 bit/s |
| 1178 | |
| 1179 | return si2 + 2; |
| 1180 | case 24: // 1200/75 bit/s |
| 1181 | |
| 1182 | return si2 + 1; |
| 1183 | default: // 1200 bit/s |
| 1184 | |
| 1185 | return si2; |
| 1186 | } |
| 1187 | } |
| 1188 | |
| 1189 | static u_char |
| 1190 | DecodeSI2(struct sk_buff *skb) |
| 1191 | { |
| 1192 | u_char *p; //, *pend=skb->data + skb->len; |
| 1193 | |
| 1194 | if ((p = findie(skb->data, skb->len, 0x7c, 0))) { |
| 1195 | switch (p[4] & 0x0f) { |
| 1196 | case 0x01: |
| 1197 | if (p[1] == 0x04) // sync. Bitratenadaption |
| 1198 | |
| 1199 | return DecodeSyncParams(160, p[5]); // V.110/X.30 |
| 1200 | |
| 1201 | else if (p[1] == 0x06) // async. Bitratenadaption |
| 1202 | |
| 1203 | return DecodeASyncParams(192, p); // V.110/X.30 |
| 1204 | |
| 1205 | break; |
| 1206 | case 0x08: // if (p[5] == 0x02) // sync. Bitratenadaption |
| 1207 | if (p[1] > 3) |
| 1208 | return DecodeSyncParams(176, p[5]); // V.120 |
| 1209 | break; |
| 1210 | } |
| 1211 | } |
| 1212 | return 0; |
| 1213 | } |
| 1214 | |
| 1215 | #endif |
| 1216 | |
| 1217 | |
| 1218 | static void |
| 1219 | l3dss1_setup_req(struct l3_process *pc, u_char pr, |
| 1220 | void *arg) |
| 1221 | { |
| 1222 | struct sk_buff *skb; |
| 1223 | u_char tmp[128]; |
| 1224 | u_char *p = tmp; |
| 1225 | u_char channel = 0; |
| 1226 | |
| 1227 | u_char send_keypad; |
| 1228 | u_char screen = 0x80; |
| 1229 | u_char *teln; |
| 1230 | u_char *msn; |
| 1231 | u_char *sub; |
| 1232 | u_char *sp; |
| 1233 | int l; |
| 1234 | |
| 1235 | MsgHead(p, pc->callref, MT_SETUP); |
| 1236 | |
| 1237 | teln = pc->para.setup.phone; |
| 1238 | #ifndef CONFIG_HISAX_NO_KEYPAD |
| 1239 | send_keypad = (strchr(teln,'*') || strchr(teln,'#')) ? 1 : 0; |
| 1240 | #else |
| 1241 | send_keypad = 0; |
| 1242 | #endif |
| 1243 | #ifndef CONFIG_HISAX_NO_SENDCOMPLETE |
| 1244 | if (!send_keypad) |
| 1245 | *p++ = 0xa1; /* complete indicator */ |
| 1246 | #endif |
| 1247 | /* |
| 1248 | * Set Bearer Capability, Map info from 1TR6-convention to EDSS1 |
| 1249 | */ |
| 1250 | switch (pc->para.setup.si1) { |
| 1251 | case 1: /* Telephony */ |
| 1252 | *p++ = IE_BEARER; |
| 1253 | *p++ = 0x3; /* Length */ |
| 1254 | *p++ = 0x90; /* Coding Std. CCITT, 3.1 kHz audio */ |
| 1255 | *p++ = 0x90; /* Circuit-Mode 64kbps */ |
| 1256 | *p++ = 0xa3; /* A-Law Audio */ |
| 1257 | break; |
| 1258 | case 5: /* Datatransmission 64k, BTX */ |
| 1259 | case 7: /* Datatransmission 64k */ |
| 1260 | default: |
| 1261 | *p++ = IE_BEARER; |
| 1262 | *p++ = 0x2; /* Length */ |
| 1263 | *p++ = 0x88; /* Coding Std. CCITT, unrestr. dig. Inform. */ |
| 1264 | *p++ = 0x90; /* Circuit-Mode 64kbps */ |
| 1265 | break; |
| 1266 | } |
| 1267 | |
| 1268 | if (send_keypad) { |
| 1269 | *p++ = IE_KEYPAD; |
| 1270 | *p++ = strlen(teln); |
| 1271 | while (*teln) |
| 1272 | *p++ = (*teln++) & 0x7F; |
| 1273 | } |
| 1274 | |
| 1275 | /* |
| 1276 | * What about info2? Mapping to High-Layer-Compatibility? |
| 1277 | */ |
| 1278 | if ((*teln) && (!send_keypad)) { |
| 1279 | /* parse number for special things */ |
| 1280 | if (!isdigit(*teln)) { |
| 1281 | switch (0x5f & *teln) { |
| 1282 | case 'C': |
| 1283 | channel = 0x08; |
| 1284 | case 'P': |
| 1285 | channel |= 0x80; |
| 1286 | teln++; |
| 1287 | if (*teln == '1') |
| 1288 | channel |= 0x01; |
| 1289 | else |
| 1290 | channel |= 0x02; |
| 1291 | break; |
| 1292 | case 'R': |
| 1293 | screen = 0xA0; |
| 1294 | break; |
| 1295 | case 'D': |
| 1296 | screen = 0x80; |
| 1297 | break; |
| 1298 | |
| 1299 | default: |
| 1300 | if (pc->debug & L3_DEB_WARN) |
| 1301 | l3_debug(pc->st, "Wrong MSN Code"); |
| 1302 | break; |
| 1303 | } |
| 1304 | teln++; |
| 1305 | } |
| 1306 | } |
| 1307 | if (channel) { |
| 1308 | *p++ = IE_CHANNEL_ID; |
| 1309 | *p++ = 1; |
| 1310 | *p++ = channel; |
| 1311 | } |
| 1312 | msn = pc->para.setup.eazmsn; |
| 1313 | sub = NULL; |
| 1314 | sp = msn; |
| 1315 | while (*sp) { |
| 1316 | if ('.' == *sp) { |
| 1317 | sub = sp; |
| 1318 | *sp = 0; |
| 1319 | } else |
| 1320 | sp++; |
| 1321 | } |
| 1322 | if (*msn) { |
| 1323 | *p++ = IE_CALLING_PN; |
| 1324 | *p++ = strlen(msn) + (screen ? 2 : 1); |
| 1325 | /* Classify as AnyPref. */ |
| 1326 | if (screen) { |
| 1327 | *p++ = 0x01; /* Ext = '0'B, Type = '000'B, Plan = '0001'B. */ |
| 1328 | *p++ = screen; |
| 1329 | } else |
| 1330 | *p++ = 0x81; /* Ext = '1'B, Type = '000'B, Plan = '0001'B. */ |
| 1331 | while (*msn) |
| 1332 | *p++ = *msn++ & 0x7f; |
| 1333 | } |
| 1334 | if (sub) { |
| 1335 | *sub++ = '.'; |
| 1336 | *p++ = IE_CALLING_SUB; |
| 1337 | *p++ = strlen(sub) + 2; |
| 1338 | *p++ = 0x80; /* NSAP coded */ |
| 1339 | *p++ = 0x50; /* local IDI format */ |
| 1340 | while (*sub) |
| 1341 | *p++ = *sub++ & 0x7f; |
| 1342 | } |
| 1343 | sub = NULL; |
| 1344 | sp = teln; |
| 1345 | while (*sp) { |
| 1346 | if ('.' == *sp) { |
| 1347 | sub = sp; |
| 1348 | *sp = 0; |
| 1349 | } else |
| 1350 | sp++; |
| 1351 | } |
| 1352 | |
| 1353 | if (!send_keypad) { |
| 1354 | *p++ = IE_CALLED_PN; |
| 1355 | *p++ = strlen(teln) + 1; |
| 1356 | /* Classify as AnyPref. */ |
| 1357 | *p++ = 0x81; /* Ext = '1'B, Type = '000'B, Plan = '0001'B. */ |
| 1358 | while (*teln) |
| 1359 | *p++ = *teln++ & 0x7f; |
| 1360 | |
| 1361 | if (sub) { |
| 1362 | *sub++ = '.'; |
| 1363 | *p++ = IE_CALLED_SUB; |
| 1364 | *p++ = strlen(sub) + 2; |
| 1365 | *p++ = 0x80; /* NSAP coded */ |
| 1366 | *p++ = 0x50; /* local IDI format */ |
| 1367 | while (*sub) |
| 1368 | *p++ = *sub++ & 0x7f; |
| 1369 | } |
| 1370 | } |
Olaf Hering | 44456d3 | 2005-07-27 11:45:17 -0700 | [diff] [blame] | 1371 | #ifdef EXT_BEARER_CAPS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | if ((pc->para.setup.si2 >= 160) && (pc->para.setup.si2 <= 175)) { // sync. Bitratenadaption, V.110/X.30 |
| 1373 | |
| 1374 | *p++ = IE_LLC; |
| 1375 | *p++ = 0x04; |
| 1376 | *p++ = 0x88; |
| 1377 | *p++ = 0x90; |
| 1378 | *p++ = 0x21; |
| 1379 | *p++ = EncodeSyncParams(pc->para.setup.si2 - 160, 0x80); |
| 1380 | } else if ((pc->para.setup.si2 >= 176) && (pc->para.setup.si2 <= 191)) { // sync. Bitratenadaption, V.120 |
| 1381 | |
| 1382 | *p++ = IE_LLC; |
| 1383 | *p++ = 0x05; |
| 1384 | *p++ = 0x88; |
| 1385 | *p++ = 0x90; |
| 1386 | *p++ = 0x28; |
| 1387 | *p++ = EncodeSyncParams(pc->para.setup.si2 - 176, 0); |
| 1388 | *p++ = 0x82; |
| 1389 | } else if (pc->para.setup.si2 >= 192) { // async. Bitratenadaption, V.110/X.30 |
| 1390 | |
| 1391 | *p++ = IE_LLC; |
| 1392 | *p++ = 0x06; |
| 1393 | *p++ = 0x88; |
| 1394 | *p++ = 0x90; |
| 1395 | *p++ = 0x21; |
| 1396 | p = EncodeASyncParams(p, pc->para.setup.si2 - 192); |
| 1397 | #ifndef CONFIG_HISAX_NO_LLC |
| 1398 | } else { |
| 1399 | switch (pc->para.setup.si1) { |
| 1400 | case 1: /* Telephony */ |
| 1401 | *p++ = IE_LLC; |
| 1402 | *p++ = 0x3; /* Length */ |
| 1403 | *p++ = 0x90; /* Coding Std. CCITT, 3.1 kHz audio */ |
| 1404 | *p++ = 0x90; /* Circuit-Mode 64kbps */ |
| 1405 | *p++ = 0xa3; /* A-Law Audio */ |
| 1406 | break; |
| 1407 | case 5: /* Datatransmission 64k, BTX */ |
| 1408 | case 7: /* Datatransmission 64k */ |
| 1409 | default: |
| 1410 | *p++ = IE_LLC; |
| 1411 | *p++ = 0x2; /* Length */ |
| 1412 | *p++ = 0x88; /* Coding Std. CCITT, unrestr. dig. Inform. */ |
| 1413 | *p++ = 0x90; /* Circuit-Mode 64kbps */ |
| 1414 | break; |
| 1415 | } |
| 1416 | #endif |
| 1417 | } |
| 1418 | #endif |
| 1419 | l = p - tmp; |
| 1420 | if (!(skb = l3_alloc_skb(l))) |
| 1421 | return; |
| 1422 | memcpy(skb_put(skb, l), tmp, l); |
| 1423 | L3DelTimer(&pc->timer); |
| 1424 | L3AddTimer(&pc->timer, T303, CC_T303); |
| 1425 | newl3state(pc, 1); |
| 1426 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 1427 | } |
| 1428 | |
| 1429 | static void |
| 1430 | l3dss1_call_proc(struct l3_process *pc, u_char pr, void *arg) |
| 1431 | { |
| 1432 | struct sk_buff *skb = arg; |
| 1433 | int id, ret; |
| 1434 | |
| 1435 | if ((id = l3dss1_get_channel_id(pc, skb)) >= 0) { |
| 1436 | if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) { |
| 1437 | if (pc->debug & L3_DEB_WARN) |
| 1438 | l3_debug(pc->st, "setup answer with wrong chid %x", id); |
| 1439 | pc->para.cause = 100; |
| 1440 | l3dss1_status_send(pc, pr, NULL); |
| 1441 | return; |
| 1442 | } |
| 1443 | pc->para.bchannel = id; |
| 1444 | } else if (1 == pc->state) { |
| 1445 | if (pc->debug & L3_DEB_WARN) |
| 1446 | l3_debug(pc->st, "setup answer wrong chid (ret %d)", id); |
| 1447 | if (id == -1) |
| 1448 | pc->para.cause = 96; |
| 1449 | else |
| 1450 | pc->para.cause = 100; |
| 1451 | l3dss1_status_send(pc, pr, NULL); |
| 1452 | return; |
| 1453 | } |
| 1454 | /* Now we are on none mandatory IEs */ |
| 1455 | ret = check_infoelements(pc, skb, ie_CALL_PROCEEDING); |
| 1456 | if (ERR_IE_COMPREHENSION == ret) { |
| 1457 | l3dss1_std_ie_err(pc, ret); |
| 1458 | return; |
| 1459 | } |
| 1460 | L3DelTimer(&pc->timer); |
| 1461 | newl3state(pc, 3); |
| 1462 | L3AddTimer(&pc->timer, T310, CC_T310); |
| 1463 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ |
| 1464 | l3dss1_std_ie_err(pc, ret); |
| 1465 | pc->st->l3.l3l4(pc->st, CC_PROCEEDING | INDICATION, pc); |
| 1466 | } |
| 1467 | |
| 1468 | static void |
| 1469 | l3dss1_setup_ack(struct l3_process *pc, u_char pr, void *arg) |
| 1470 | { |
| 1471 | struct sk_buff *skb = arg; |
| 1472 | int id, ret; |
| 1473 | |
| 1474 | if ((id = l3dss1_get_channel_id(pc, skb)) >= 0) { |
| 1475 | if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) { |
| 1476 | if (pc->debug & L3_DEB_WARN) |
| 1477 | l3_debug(pc->st, "setup answer with wrong chid %x", id); |
| 1478 | pc->para.cause = 100; |
| 1479 | l3dss1_status_send(pc, pr, NULL); |
| 1480 | return; |
| 1481 | } |
| 1482 | pc->para.bchannel = id; |
| 1483 | } else { |
| 1484 | if (pc->debug & L3_DEB_WARN) |
| 1485 | l3_debug(pc->st, "setup answer wrong chid (ret %d)", id); |
| 1486 | if (id == -1) |
| 1487 | pc->para.cause = 96; |
| 1488 | else |
| 1489 | pc->para.cause = 100; |
| 1490 | l3dss1_status_send(pc, pr, NULL); |
| 1491 | return; |
| 1492 | } |
| 1493 | /* Now we are on none mandatory IEs */ |
| 1494 | ret = check_infoelements(pc, skb, ie_SETUP_ACKNOWLEDGE); |
| 1495 | if (ERR_IE_COMPREHENSION == ret) { |
| 1496 | l3dss1_std_ie_err(pc, ret); |
| 1497 | return; |
| 1498 | } |
| 1499 | L3DelTimer(&pc->timer); |
| 1500 | newl3state(pc, 2); |
| 1501 | L3AddTimer(&pc->timer, T304, CC_T304); |
| 1502 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ |
| 1503 | l3dss1_std_ie_err(pc, ret); |
| 1504 | pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc); |
| 1505 | } |
| 1506 | |
| 1507 | static void |
| 1508 | l3dss1_disconnect(struct l3_process *pc, u_char pr, void *arg) |
| 1509 | { |
| 1510 | struct sk_buff *skb = arg; |
| 1511 | u_char *p; |
| 1512 | int ret; |
| 1513 | u_char cause = 0; |
| 1514 | |
| 1515 | StopAllL3Timer(pc); |
| 1516 | if ((ret = l3dss1_get_cause(pc, skb))) { |
| 1517 | if (pc->debug & L3_DEB_WARN) |
| 1518 | l3_debug(pc->st, "DISC get_cause ret(%d)", ret); |
| 1519 | if (ret < 0) |
| 1520 | cause = 96; |
| 1521 | else if (ret > 0) |
| 1522 | cause = 100; |
| 1523 | } |
| 1524 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) |
| 1525 | l3dss1_parse_facility(pc->st, pc, pc->callref, p); |
| 1526 | ret = check_infoelements(pc, skb, ie_DISCONNECT); |
| 1527 | if (ERR_IE_COMPREHENSION == ret) |
| 1528 | cause = 96; |
| 1529 | else if ((!cause) && (ERR_IE_UNRECOGNIZED == ret)) |
| 1530 | cause = 99; |
| 1531 | ret = pc->state; |
| 1532 | newl3state(pc, 12); |
| 1533 | if (cause) |
| 1534 | newl3state(pc, 19); |
| 1535 | if (11 != ret) |
| 1536 | pc->st->l3.l3l4(pc->st, CC_DISCONNECT | INDICATION, pc); |
| 1537 | else if (!cause) |
| 1538 | l3dss1_release_req(pc, pr, NULL); |
| 1539 | if (cause) { |
| 1540 | l3dss1_message_cause(pc, MT_RELEASE, cause); |
| 1541 | L3AddTimer(&pc->timer, T308, CC_T308_1); |
| 1542 | } |
| 1543 | } |
| 1544 | |
| 1545 | static void |
| 1546 | l3dss1_connect(struct l3_process *pc, u_char pr, void *arg) |
| 1547 | { |
| 1548 | struct sk_buff *skb = arg; |
| 1549 | int ret; |
| 1550 | |
| 1551 | ret = check_infoelements(pc, skb, ie_CONNECT); |
| 1552 | if (ERR_IE_COMPREHENSION == ret) { |
| 1553 | l3dss1_std_ie_err(pc, ret); |
| 1554 | return; |
| 1555 | } |
| 1556 | L3DelTimer(&pc->timer); /* T310 */ |
| 1557 | newl3state(pc, 10); |
| 1558 | pc->para.chargeinfo = 0; |
| 1559 | /* here should inserted COLP handling KKe */ |
| 1560 | if (ret) |
| 1561 | l3dss1_std_ie_err(pc, ret); |
| 1562 | pc->st->l3.l3l4(pc->st, CC_SETUP | CONFIRM, pc); |
| 1563 | } |
| 1564 | |
| 1565 | static void |
| 1566 | l3dss1_alerting(struct l3_process *pc, u_char pr, void *arg) |
| 1567 | { |
| 1568 | struct sk_buff *skb = arg; |
| 1569 | int ret; |
| 1570 | |
| 1571 | ret = check_infoelements(pc, skb, ie_ALERTING); |
| 1572 | if (ERR_IE_COMPREHENSION == ret) { |
| 1573 | l3dss1_std_ie_err(pc, ret); |
| 1574 | return; |
| 1575 | } |
| 1576 | L3DelTimer(&pc->timer); /* T304 */ |
| 1577 | newl3state(pc, 4); |
| 1578 | if (ret) |
| 1579 | l3dss1_std_ie_err(pc, ret); |
| 1580 | pc->st->l3.l3l4(pc->st, CC_ALERTING | INDICATION, pc); |
| 1581 | } |
| 1582 | |
| 1583 | static void |
| 1584 | l3dss1_setup(struct l3_process *pc, u_char pr, void *arg) |
| 1585 | { |
| 1586 | u_char *p; |
| 1587 | int bcfound = 0; |
| 1588 | char tmp[80]; |
| 1589 | struct sk_buff *skb = arg; |
| 1590 | int id; |
| 1591 | int err = 0; |
| 1592 | |
| 1593 | /* |
| 1594 | * Bearer Capabilities |
| 1595 | */ |
| 1596 | p = skb->data; |
| 1597 | /* only the first occurence 'll be detected ! */ |
| 1598 | if ((p = findie(p, skb->len, 0x04, 0))) { |
| 1599 | if ((p[1] < 2) || (p[1] > 11)) |
| 1600 | err = 1; |
| 1601 | else { |
| 1602 | pc->para.setup.si2 = 0; |
| 1603 | switch (p[2] & 0x7f) { |
| 1604 | case 0x00: /* Speech */ |
| 1605 | case 0x10: /* 3.1 Khz audio */ |
| 1606 | pc->para.setup.si1 = 1; |
| 1607 | break; |
| 1608 | case 0x08: /* Unrestricted digital information */ |
| 1609 | pc->para.setup.si1 = 7; |
| 1610 | /* JIM, 05.11.97 I wanna set service indicator 2 */ |
Olaf Hering | 44456d3 | 2005-07-27 11:45:17 -0700 | [diff] [blame] | 1611 | #ifdef EXT_BEARER_CAPS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1612 | pc->para.setup.si2 = DecodeSI2(skb); |
| 1613 | #endif |
| 1614 | break; |
| 1615 | case 0x09: /* Restricted digital information */ |
| 1616 | pc->para.setup.si1 = 2; |
| 1617 | break; |
| 1618 | case 0x11: |
| 1619 | /* Unrestr. digital information with |
| 1620 | * tones/announcements ( or 7 kHz audio |
| 1621 | */ |
| 1622 | pc->para.setup.si1 = 3; |
| 1623 | break; |
| 1624 | case 0x18: /* Video */ |
| 1625 | pc->para.setup.si1 = 4; |
| 1626 | break; |
| 1627 | default: |
| 1628 | err = 2; |
| 1629 | break; |
| 1630 | } |
| 1631 | switch (p[3] & 0x7f) { |
| 1632 | case 0x40: /* packed mode */ |
| 1633 | pc->para.setup.si1 = 8; |
| 1634 | break; |
| 1635 | case 0x10: /* 64 kbit */ |
| 1636 | case 0x11: /* 2*64 kbit */ |
| 1637 | case 0x13: /* 384 kbit */ |
| 1638 | case 0x15: /* 1536 kbit */ |
| 1639 | case 0x17: /* 1920 kbit */ |
| 1640 | pc->para.moderate = p[3] & 0x7f; |
| 1641 | break; |
| 1642 | default: |
| 1643 | err = 3; |
| 1644 | break; |
| 1645 | } |
| 1646 | } |
| 1647 | if (pc->debug & L3_DEB_SI) |
| 1648 | l3_debug(pc->st, "SI=%d, AI=%d", |
| 1649 | pc->para.setup.si1, pc->para.setup.si2); |
| 1650 | if (err) { |
| 1651 | if (pc->debug & L3_DEB_WARN) |
| 1652 | l3_debug(pc->st, "setup with wrong bearer(l=%d:%x,%x)", |
| 1653 | p[1], p[2], p[3]); |
| 1654 | pc->para.cause = 100; |
| 1655 | l3dss1_msg_without_setup(pc, pr, NULL); |
| 1656 | return; |
| 1657 | } |
| 1658 | } else { |
| 1659 | if (pc->debug & L3_DEB_WARN) |
| 1660 | l3_debug(pc->st, "setup without bearer capabilities"); |
| 1661 | /* ETS 300-104 1.3.3 */ |
| 1662 | pc->para.cause = 96; |
| 1663 | l3dss1_msg_without_setup(pc, pr, NULL); |
| 1664 | return; |
| 1665 | } |
| 1666 | /* |
| 1667 | * Channel Identification |
| 1668 | */ |
| 1669 | if ((id = l3dss1_get_channel_id(pc, skb)) >= 0) { |
| 1670 | if ((pc->para.bchannel = id)) { |
| 1671 | if ((3 == id) && (0x10 == pc->para.moderate)) { |
| 1672 | if (pc->debug & L3_DEB_WARN) |
| 1673 | l3_debug(pc->st, "setup with wrong chid %x", |
| 1674 | id); |
| 1675 | pc->para.cause = 100; |
| 1676 | l3dss1_msg_without_setup(pc, pr, NULL); |
| 1677 | return; |
| 1678 | } |
| 1679 | bcfound++; |
| 1680 | } else |
| 1681 | { if (pc->debug & L3_DEB_WARN) |
| 1682 | l3_debug(pc->st, "setup without bchannel, call waiting"); |
| 1683 | bcfound++; |
| 1684 | } |
| 1685 | } else { |
| 1686 | if (pc->debug & L3_DEB_WARN) |
| 1687 | l3_debug(pc->st, "setup with wrong chid ret %d", id); |
| 1688 | if (id == -1) |
| 1689 | pc->para.cause = 96; |
| 1690 | else |
| 1691 | pc->para.cause = 100; |
| 1692 | l3dss1_msg_without_setup(pc, pr, NULL); |
| 1693 | return; |
| 1694 | } |
| 1695 | /* Now we are on none mandatory IEs */ |
| 1696 | err = check_infoelements(pc, skb, ie_SETUP); |
| 1697 | if (ERR_IE_COMPREHENSION == err) { |
| 1698 | pc->para.cause = 96; |
| 1699 | l3dss1_msg_without_setup(pc, pr, NULL); |
| 1700 | return; |
| 1701 | } |
| 1702 | p = skb->data; |
| 1703 | if ((p = findie(p, skb->len, 0x70, 0))) |
| 1704 | iecpy(pc->para.setup.eazmsn, p, 1); |
| 1705 | else |
| 1706 | pc->para.setup.eazmsn[0] = 0; |
| 1707 | |
| 1708 | p = skb->data; |
| 1709 | if ((p = findie(p, skb->len, 0x71, 0))) { |
| 1710 | /* Called party subaddress */ |
| 1711 | if ((p[1] >= 2) && (p[2] == 0x80) && (p[3] == 0x50)) { |
| 1712 | tmp[0] = '.'; |
| 1713 | iecpy(&tmp[1], p, 2); |
| 1714 | strcat(pc->para.setup.eazmsn, tmp); |
| 1715 | } else if (pc->debug & L3_DEB_WARN) |
| 1716 | l3_debug(pc->st, "wrong called subaddress"); |
| 1717 | } |
| 1718 | p = skb->data; |
| 1719 | if ((p = findie(p, skb->len, 0x6c, 0))) { |
| 1720 | pc->para.setup.plan = p[2]; |
| 1721 | if (p[2] & 0x80) { |
| 1722 | iecpy(pc->para.setup.phone, p, 1); |
| 1723 | pc->para.setup.screen = 0; |
| 1724 | } else { |
| 1725 | iecpy(pc->para.setup.phone, p, 2); |
| 1726 | pc->para.setup.screen = p[3]; |
| 1727 | } |
| 1728 | } else { |
| 1729 | pc->para.setup.phone[0] = 0; |
| 1730 | pc->para.setup.plan = 0; |
| 1731 | pc->para.setup.screen = 0; |
| 1732 | } |
| 1733 | p = skb->data; |
| 1734 | if ((p = findie(p, skb->len, 0x6d, 0))) { |
| 1735 | /* Calling party subaddress */ |
| 1736 | if ((p[1] >= 2) && (p[2] == 0x80) && (p[3] == 0x50)) { |
| 1737 | tmp[0] = '.'; |
| 1738 | iecpy(&tmp[1], p, 2); |
| 1739 | strcat(pc->para.setup.phone, tmp); |
| 1740 | } else if (pc->debug & L3_DEB_WARN) |
| 1741 | l3_debug(pc->st, "wrong calling subaddress"); |
| 1742 | } |
| 1743 | newl3state(pc, 6); |
| 1744 | if (err) /* STATUS for none mandatory IE errors after actions are taken */ |
| 1745 | l3dss1_std_ie_err(pc, err); |
| 1746 | pc->st->l3.l3l4(pc->st, CC_SETUP | INDICATION, pc); |
| 1747 | } |
| 1748 | |
| 1749 | static void |
| 1750 | l3dss1_reset(struct l3_process *pc, u_char pr, void *arg) |
| 1751 | { |
| 1752 | dss1_release_l3_process(pc); |
| 1753 | } |
| 1754 | |
| 1755 | static void |
| 1756 | l3dss1_disconnect_req(struct l3_process *pc, u_char pr, void *arg) |
| 1757 | { |
| 1758 | struct sk_buff *skb; |
| 1759 | u_char tmp[16+40]; |
| 1760 | u_char *p = tmp; |
| 1761 | int l; |
| 1762 | u_char cause = 16; |
| 1763 | |
| 1764 | if (pc->para.cause != NO_CAUSE) |
| 1765 | cause = pc->para.cause; |
| 1766 | |
| 1767 | StopAllL3Timer(pc); |
| 1768 | |
| 1769 | MsgHead(p, pc->callref, MT_DISCONNECT); |
| 1770 | |
| 1771 | *p++ = IE_CAUSE; |
| 1772 | *p++ = 0x2; |
| 1773 | *p++ = 0x80; |
| 1774 | *p++ = cause | 0x80; |
| 1775 | |
| 1776 | if (pc->prot.dss1.uus1_data[0]) |
| 1777 | { *p++ = IE_USER_USER; /* UUS info element */ |
| 1778 | *p++ = strlen(pc->prot.dss1.uus1_data) + 1; |
| 1779 | *p++ = 0x04; /* IA5 chars */ |
| 1780 | strcpy(p,pc->prot.dss1.uus1_data); |
| 1781 | p += strlen(pc->prot.dss1.uus1_data); |
| 1782 | pc->prot.dss1.uus1_data[0] = '\0'; |
| 1783 | } |
| 1784 | |
| 1785 | l = p - tmp; |
| 1786 | if (!(skb = l3_alloc_skb(l))) |
| 1787 | return; |
| 1788 | memcpy(skb_put(skb, l), tmp, l); |
| 1789 | newl3state(pc, 11); |
| 1790 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 1791 | L3AddTimer(&pc->timer, T305, CC_T305); |
| 1792 | } |
| 1793 | |
| 1794 | static void |
| 1795 | l3dss1_setup_rsp(struct l3_process *pc, u_char pr, |
| 1796 | void *arg) |
| 1797 | { |
| 1798 | if (!pc->para.bchannel) |
| 1799 | { if (pc->debug & L3_DEB_WARN) |
| 1800 | l3_debug(pc->st, "D-chan connect for waiting call"); |
| 1801 | l3dss1_disconnect_req(pc, pr, arg); |
| 1802 | return; |
| 1803 | } |
| 1804 | newl3state(pc, 8); |
| 1805 | l3dss1_message(pc, MT_CONNECT); |
| 1806 | L3DelTimer(&pc->timer); |
| 1807 | L3AddTimer(&pc->timer, T313, CC_T313); |
| 1808 | } |
| 1809 | |
| 1810 | static void |
| 1811 | l3dss1_connect_ack(struct l3_process *pc, u_char pr, void *arg) |
| 1812 | { |
| 1813 | struct sk_buff *skb = arg; |
| 1814 | int ret; |
| 1815 | |
| 1816 | ret = check_infoelements(pc, skb, ie_CONNECT_ACKNOWLEDGE); |
| 1817 | if (ERR_IE_COMPREHENSION == ret) { |
| 1818 | l3dss1_std_ie_err(pc, ret); |
| 1819 | return; |
| 1820 | } |
| 1821 | newl3state(pc, 10); |
| 1822 | L3DelTimer(&pc->timer); |
| 1823 | if (ret) |
| 1824 | l3dss1_std_ie_err(pc, ret); |
| 1825 | pc->st->l3.l3l4(pc->st, CC_SETUP_COMPL | INDICATION, pc); |
| 1826 | } |
| 1827 | |
| 1828 | static void |
| 1829 | l3dss1_reject_req(struct l3_process *pc, u_char pr, void *arg) |
| 1830 | { |
| 1831 | struct sk_buff *skb; |
| 1832 | u_char tmp[16]; |
| 1833 | u_char *p = tmp; |
| 1834 | int l; |
| 1835 | u_char cause = 21; |
| 1836 | |
| 1837 | if (pc->para.cause != NO_CAUSE) |
| 1838 | cause = pc->para.cause; |
| 1839 | |
| 1840 | MsgHead(p, pc->callref, MT_RELEASE_COMPLETE); |
| 1841 | |
| 1842 | *p++ = IE_CAUSE; |
| 1843 | *p++ = 0x2; |
| 1844 | *p++ = 0x80; |
| 1845 | *p++ = cause | 0x80; |
| 1846 | |
| 1847 | l = p - tmp; |
| 1848 | if (!(skb = l3_alloc_skb(l))) |
| 1849 | return; |
| 1850 | memcpy(skb_put(skb, l), tmp, l); |
| 1851 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 1852 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); |
| 1853 | newl3state(pc, 0); |
| 1854 | dss1_release_l3_process(pc); |
| 1855 | } |
| 1856 | |
| 1857 | static void |
| 1858 | l3dss1_release(struct l3_process *pc, u_char pr, void *arg) |
| 1859 | { |
| 1860 | struct sk_buff *skb = arg; |
| 1861 | u_char *p; |
| 1862 | int ret, cause=0; |
| 1863 | |
| 1864 | StopAllL3Timer(pc); |
| 1865 | if ((ret = l3dss1_get_cause(pc, skb))>0) { |
| 1866 | if (pc->debug & L3_DEB_WARN) |
| 1867 | l3_debug(pc->st, "REL get_cause ret(%d)", ret); |
| 1868 | } else if (ret<0) |
| 1869 | pc->para.cause = NO_CAUSE; |
| 1870 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) { |
| 1871 | l3dss1_parse_facility(pc->st, pc, pc->callref, p); |
| 1872 | } |
| 1873 | if ((ret<0) && (pc->state != 11)) |
| 1874 | cause = 96; |
| 1875 | else if (ret>0) |
| 1876 | cause = 100; |
| 1877 | ret = check_infoelements(pc, skb, ie_RELEASE); |
| 1878 | if (ERR_IE_COMPREHENSION == ret) |
| 1879 | cause = 96; |
| 1880 | else if ((ERR_IE_UNRECOGNIZED == ret) && (!cause)) |
| 1881 | cause = 99; |
| 1882 | if (cause) |
| 1883 | l3dss1_message_cause(pc, MT_RELEASE_COMPLETE, cause); |
| 1884 | else |
| 1885 | l3dss1_message(pc, MT_RELEASE_COMPLETE); |
| 1886 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); |
| 1887 | newl3state(pc, 0); |
| 1888 | dss1_release_l3_process(pc); |
| 1889 | } |
| 1890 | |
| 1891 | static void |
| 1892 | l3dss1_alert_req(struct l3_process *pc, u_char pr, |
| 1893 | void *arg) |
| 1894 | { |
| 1895 | newl3state(pc, 7); |
| 1896 | if (!pc->prot.dss1.uus1_data[0]) |
| 1897 | l3dss1_message(pc, MT_ALERTING); |
| 1898 | else |
| 1899 | l3dss1_msg_with_uus(pc, MT_ALERTING); |
| 1900 | } |
| 1901 | |
| 1902 | static void |
| 1903 | l3dss1_proceed_req(struct l3_process *pc, u_char pr, |
| 1904 | void *arg) |
| 1905 | { |
| 1906 | newl3state(pc, 9); |
| 1907 | l3dss1_message(pc, MT_CALL_PROCEEDING); |
| 1908 | pc->st->l3.l3l4(pc->st, CC_PROCEED_SEND | INDICATION, pc); |
| 1909 | } |
| 1910 | |
| 1911 | static void |
| 1912 | l3dss1_setup_ack_req(struct l3_process *pc, u_char pr, |
| 1913 | void *arg) |
| 1914 | { |
| 1915 | newl3state(pc, 25); |
| 1916 | L3DelTimer(&pc->timer); |
| 1917 | L3AddTimer(&pc->timer, T302, CC_T302); |
| 1918 | l3dss1_message(pc, MT_SETUP_ACKNOWLEDGE); |
| 1919 | } |
| 1920 | |
| 1921 | /********************************************/ |
| 1922 | /* deliver a incoming display message to HL */ |
| 1923 | /********************************************/ |
| 1924 | static void |
| 1925 | l3dss1_deliver_display(struct l3_process *pc, int pr, u_char *infp) |
| 1926 | { u_char len; |
| 1927 | isdn_ctrl ic; |
| 1928 | struct IsdnCardState *cs; |
| 1929 | char *p; |
| 1930 | |
| 1931 | if (*infp++ != IE_DISPLAY) return; |
| 1932 | if ((len = *infp++) > 80) return; /* total length <= 82 */ |
| 1933 | if (!pc->chan) return; |
| 1934 | |
| 1935 | p = ic.parm.display; |
| 1936 | while (len--) |
| 1937 | *p++ = *infp++; |
| 1938 | *p = '\0'; |
| 1939 | ic.command = ISDN_STAT_DISPLAY; |
| 1940 | cs = pc->st->l1.hardware; |
| 1941 | ic.driver = cs->myid; |
| 1942 | ic.arg = pc->chan->chan; |
| 1943 | cs->iif.statcallb(&ic); |
| 1944 | } /* l3dss1_deliver_display */ |
| 1945 | |
| 1946 | |
| 1947 | static void |
| 1948 | l3dss1_progress(struct l3_process *pc, u_char pr, void *arg) |
| 1949 | { |
| 1950 | struct sk_buff *skb = arg; |
| 1951 | int err = 0; |
| 1952 | u_char *p; |
| 1953 | |
| 1954 | if ((p = findie(skb->data, skb->len, IE_PROGRESS, 0))) { |
| 1955 | if (p[1] != 2) { |
| 1956 | err = 1; |
| 1957 | pc->para.cause = 100; |
| 1958 | } else if (!(p[2] & 0x70)) { |
| 1959 | switch (p[2]) { |
| 1960 | case 0x80: |
| 1961 | case 0x81: |
| 1962 | case 0x82: |
| 1963 | case 0x84: |
| 1964 | case 0x85: |
| 1965 | case 0x87: |
| 1966 | case 0x8a: |
| 1967 | switch (p[3]) { |
| 1968 | case 0x81: |
| 1969 | case 0x82: |
| 1970 | case 0x83: |
| 1971 | case 0x84: |
| 1972 | case 0x88: |
| 1973 | break; |
| 1974 | default: |
| 1975 | err = 2; |
| 1976 | pc->para.cause = 100; |
| 1977 | break; |
| 1978 | } |
| 1979 | break; |
| 1980 | default: |
| 1981 | err = 3; |
| 1982 | pc->para.cause = 100; |
| 1983 | break; |
| 1984 | } |
| 1985 | } |
| 1986 | } else { |
| 1987 | pc->para.cause = 96; |
| 1988 | err = 4; |
| 1989 | } |
| 1990 | if (err) { |
| 1991 | if (pc->debug & L3_DEB_WARN) |
| 1992 | l3_debug(pc->st, "progress error %d", err); |
| 1993 | l3dss1_status_send(pc, pr, NULL); |
| 1994 | return; |
| 1995 | } |
| 1996 | /* Now we are on none mandatory IEs */ |
| 1997 | err = check_infoelements(pc, skb, ie_PROGRESS); |
| 1998 | if (err) |
| 1999 | l3dss1_std_ie_err(pc, err); |
| 2000 | if (ERR_IE_COMPREHENSION != err) |
| 2001 | pc->st->l3.l3l4(pc->st, CC_PROGRESS | INDICATION, pc); |
| 2002 | } |
| 2003 | |
| 2004 | static void |
| 2005 | l3dss1_notify(struct l3_process *pc, u_char pr, void *arg) |
| 2006 | { |
| 2007 | struct sk_buff *skb = arg; |
| 2008 | int err = 0; |
| 2009 | u_char *p; |
| 2010 | |
| 2011 | if ((p = findie(skb->data, skb->len, IE_NOTIFY, 0))) { |
| 2012 | if (p[1] != 1) { |
| 2013 | err = 1; |
| 2014 | pc->para.cause = 100; |
| 2015 | } else { |
| 2016 | switch (p[2]) { |
| 2017 | case 0x80: |
| 2018 | case 0x81: |
| 2019 | case 0x82: |
| 2020 | break; |
| 2021 | default: |
| 2022 | pc->para.cause = 100; |
| 2023 | err = 2; |
| 2024 | break; |
| 2025 | } |
| 2026 | } |
| 2027 | } else { |
| 2028 | pc->para.cause = 96; |
| 2029 | err = 3; |
| 2030 | } |
| 2031 | if (err) { |
| 2032 | if (pc->debug & L3_DEB_WARN) |
| 2033 | l3_debug(pc->st, "notify error %d", err); |
| 2034 | l3dss1_status_send(pc, pr, NULL); |
| 2035 | return; |
| 2036 | } |
| 2037 | /* Now we are on none mandatory IEs */ |
| 2038 | err = check_infoelements(pc, skb, ie_NOTIFY); |
| 2039 | if (err) |
| 2040 | l3dss1_std_ie_err(pc, err); |
| 2041 | if (ERR_IE_COMPREHENSION != err) |
| 2042 | pc->st->l3.l3l4(pc->st, CC_NOTIFY | INDICATION, pc); |
| 2043 | } |
| 2044 | |
| 2045 | static void |
| 2046 | l3dss1_status_enq(struct l3_process *pc, u_char pr, void *arg) |
| 2047 | { |
| 2048 | int ret; |
| 2049 | struct sk_buff *skb = arg; |
| 2050 | |
| 2051 | ret = check_infoelements(pc, skb, ie_STATUS_ENQUIRY); |
| 2052 | l3dss1_std_ie_err(pc, ret); |
| 2053 | pc->para.cause = 30; /* response to STATUS_ENQUIRY */ |
| 2054 | l3dss1_status_send(pc, pr, NULL); |
| 2055 | } |
| 2056 | |
| 2057 | static void |
| 2058 | l3dss1_information(struct l3_process *pc, u_char pr, void *arg) |
| 2059 | { |
| 2060 | int ret; |
| 2061 | struct sk_buff *skb = arg; |
| 2062 | u_char *p; |
| 2063 | char tmp[32]; |
| 2064 | |
| 2065 | ret = check_infoelements(pc, skb, ie_INFORMATION); |
| 2066 | if (ret) |
| 2067 | l3dss1_std_ie_err(pc, ret); |
| 2068 | if (pc->state == 25) { /* overlap receiving */ |
| 2069 | L3DelTimer(&pc->timer); |
| 2070 | p = skb->data; |
| 2071 | if ((p = findie(p, skb->len, 0x70, 0))) { |
| 2072 | iecpy(tmp, p, 1); |
| 2073 | strcat(pc->para.setup.eazmsn, tmp); |
| 2074 | pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc); |
| 2075 | } |
| 2076 | L3AddTimer(&pc->timer, T302, CC_T302); |
| 2077 | } |
| 2078 | } |
| 2079 | |
| 2080 | /******************************/ |
| 2081 | /* handle deflection requests */ |
| 2082 | /******************************/ |
| 2083 | static void l3dss1_redir_req(struct l3_process *pc, u_char pr, void *arg) |
| 2084 | { |
| 2085 | struct sk_buff *skb; |
| 2086 | u_char tmp[128]; |
| 2087 | u_char *p = tmp; |
| 2088 | u_char *subp; |
| 2089 | u_char len_phone = 0; |
| 2090 | u_char len_sub = 0; |
| 2091 | int l; |
| 2092 | |
| 2093 | |
| 2094 | strcpy(pc->prot.dss1.uus1_data,pc->chan->setup.eazmsn); /* copy uus element if available */ |
| 2095 | if (!pc->chan->setup.phone[0]) |
| 2096 | { pc->para.cause = -1; |
| 2097 | l3dss1_disconnect_req(pc,pr,arg); /* disconnect immediately */ |
| 2098 | return; |
| 2099 | } /* only uus */ |
| 2100 | |
| 2101 | if (pc->prot.dss1.invoke_id) |
| 2102 | free_invoke_id(pc->st,pc->prot.dss1.invoke_id); |
| 2103 | |
| 2104 | if (!(pc->prot.dss1.invoke_id = new_invoke_id(pc->st))) |
| 2105 | return; |
| 2106 | |
| 2107 | MsgHead(p, pc->callref, MT_FACILITY); |
| 2108 | |
| 2109 | for (subp = pc->chan->setup.phone; (*subp) && (*subp != '.'); subp++) len_phone++; /* len of phone number */ |
| 2110 | if (*subp++ == '.') len_sub = strlen(subp) + 2; /* length including info subaddress element */ |
| 2111 | |
| 2112 | *p++ = 0x1c; /* Facility info element */ |
| 2113 | *p++ = len_phone + len_sub + 2 + 2 + 8 + 3 + 3; /* length of element */ |
| 2114 | *p++ = 0x91; /* remote operations protocol */ |
| 2115 | *p++ = 0xa1; /* invoke component */ |
| 2116 | |
| 2117 | *p++ = len_phone + len_sub + 2 + 2 + 8 + 3; /* length of data */ |
| 2118 | *p++ = 0x02; /* invoke id tag, integer */ |
| 2119 | *p++ = 0x01; /* length */ |
| 2120 | *p++ = pc->prot.dss1.invoke_id; /* invoke id */ |
| 2121 | *p++ = 0x02; /* operation value tag, integer */ |
| 2122 | *p++ = 0x01; /* length */ |
| 2123 | *p++ = 0x0D; /* Call Deflect */ |
| 2124 | |
| 2125 | *p++ = 0x30; /* sequence phone number */ |
| 2126 | *p++ = len_phone + 2 + 2 + 3 + len_sub; /* length */ |
| 2127 | |
| 2128 | *p++ = 0x30; /* Deflected to UserNumber */ |
| 2129 | *p++ = len_phone+2+len_sub; /* length */ |
| 2130 | *p++ = 0x80; /* NumberDigits */ |
| 2131 | *p++ = len_phone; /* length */ |
| 2132 | for (l = 0; l < len_phone; l++) |
| 2133 | *p++ = pc->chan->setup.phone[l]; |
| 2134 | |
| 2135 | if (len_sub) |
| 2136 | { *p++ = 0x04; /* called party subaddress */ |
| 2137 | *p++ = len_sub - 2; |
| 2138 | while (*subp) *p++ = *subp++; |
| 2139 | } |
| 2140 | |
| 2141 | *p++ = 0x01; /* screening identifier */ |
| 2142 | *p++ = 0x01; |
| 2143 | *p++ = pc->chan->setup.screen; |
| 2144 | |
| 2145 | l = p - tmp; |
| 2146 | if (!(skb = l3_alloc_skb(l))) return; |
| 2147 | memcpy(skb_put(skb, l), tmp, l); |
| 2148 | |
| 2149 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 2150 | } /* l3dss1_redir_req */ |
| 2151 | |
| 2152 | /********************************************/ |
| 2153 | /* handle deflection request in early state */ |
| 2154 | /********************************************/ |
| 2155 | static void l3dss1_redir_req_early(struct l3_process *pc, u_char pr, void *arg) |
| 2156 | { |
| 2157 | l3dss1_proceed_req(pc,pr,arg); |
| 2158 | l3dss1_redir_req(pc,pr,arg); |
| 2159 | } /* l3dss1_redir_req_early */ |
| 2160 | |
| 2161 | /***********************************************/ |
| 2162 | /* handle special commands for this protocol. */ |
| 2163 | /* Examples are call independant services like */ |
| 2164 | /* remote operations with dummy callref. */ |
| 2165 | /***********************************************/ |
| 2166 | static int l3dss1_cmd_global(struct PStack *st, isdn_ctrl *ic) |
| 2167 | { u_char id; |
| 2168 | u_char temp[265]; |
| 2169 | u_char *p = temp; |
| 2170 | int i, l, proc_len; |
| 2171 | struct sk_buff *skb; |
| 2172 | struct l3_process *pc = NULL; |
| 2173 | |
| 2174 | switch (ic->arg) |
| 2175 | { case DSS1_CMD_INVOKE: |
| 2176 | if (ic->parm.dss1_io.datalen < 0) return(-2); /* invalid parameter */ |
| 2177 | |
| 2178 | for (proc_len = 1, i = ic->parm.dss1_io.proc >> 8; i; i++) |
| 2179 | i = i >> 8; /* add one byte */ |
| 2180 | l = ic->parm.dss1_io.datalen + proc_len + 8; /* length excluding ie header */ |
| 2181 | if (l > 255) |
| 2182 | return(-2); /* too long */ |
| 2183 | |
| 2184 | if (!(id = new_invoke_id(st))) |
| 2185 | return(0); /* first get a invoke id -> return if no available */ |
| 2186 | |
| 2187 | i = -1; |
| 2188 | MsgHead(p, i, MT_FACILITY); /* build message head */ |
| 2189 | *p++ = 0x1C; /* Facility IE */ |
| 2190 | *p++ = l; /* length of ie */ |
| 2191 | *p++ = 0x91; /* remote operations */ |
| 2192 | *p++ = 0xA1; /* invoke */ |
| 2193 | *p++ = l - 3; /* length of invoke */ |
| 2194 | *p++ = 0x02; /* invoke id tag */ |
| 2195 | *p++ = 0x01; /* length is 1 */ |
| 2196 | *p++ = id; /* invoke id */ |
| 2197 | *p++ = 0x02; /* operation */ |
| 2198 | *p++ = proc_len; /* length of operation */ |
| 2199 | |
| 2200 | for (i = proc_len; i; i--) |
| 2201 | *p++ = (ic->parm.dss1_io.proc >> (i-1)) & 0xFF; |
| 2202 | memcpy(p, ic->parm.dss1_io.data, ic->parm.dss1_io.datalen); /* copy data */ |
| 2203 | l = (p - temp) + ic->parm.dss1_io.datalen; /* total length */ |
| 2204 | |
| 2205 | if (ic->parm.dss1_io.timeout > 0) |
| 2206 | if (!(pc = dss1_new_l3_process(st, -1))) |
| 2207 | { free_invoke_id(st, id); |
| 2208 | return(-2); |
| 2209 | } |
| 2210 | pc->prot.dss1.ll_id = ic->parm.dss1_io.ll_id; /* remember id */ |
| 2211 | pc->prot.dss1.proc = ic->parm.dss1_io.proc; /* and procedure */ |
| 2212 | |
| 2213 | if (!(skb = l3_alloc_skb(l))) |
| 2214 | { free_invoke_id(st, id); |
| 2215 | if (pc) dss1_release_l3_process(pc); |
| 2216 | return(-2); |
| 2217 | } |
| 2218 | memcpy(skb_put(skb, l), temp, l); |
| 2219 | |
| 2220 | if (pc) |
| 2221 | { pc->prot.dss1.invoke_id = id; /* remember id */ |
| 2222 | L3AddTimer(&pc->timer, ic->parm.dss1_io.timeout, CC_TDSS1_IO | REQUEST); |
| 2223 | } |
| 2224 | |
| 2225 | l3_msg(st, DL_DATA | REQUEST, skb); |
| 2226 | ic->parm.dss1_io.hl_id = id; /* return id */ |
| 2227 | return(0); |
| 2228 | |
| 2229 | case DSS1_CMD_INVOKE_ABORT: |
| 2230 | if ((pc = l3dss1_search_dummy_proc(st, ic->parm.dss1_io.hl_id))) |
| 2231 | { L3DelTimer(&pc->timer); /* remove timer */ |
| 2232 | dss1_release_l3_process(pc); |
| 2233 | return(0); |
| 2234 | } |
| 2235 | else |
| 2236 | { l3_debug(st, "l3dss1_cmd_global abort unknown id"); |
| 2237 | return(-2); |
| 2238 | } |
| 2239 | break; |
| 2240 | |
| 2241 | default: |
| 2242 | l3_debug(st, "l3dss1_cmd_global unknown cmd 0x%lx", ic->arg); |
| 2243 | return(-1); |
| 2244 | } /* switch ic-> arg */ |
| 2245 | return(-1); |
| 2246 | } /* l3dss1_cmd_global */ |
| 2247 | |
| 2248 | static void |
| 2249 | l3dss1_io_timer(struct l3_process *pc) |
| 2250 | { isdn_ctrl ic; |
| 2251 | struct IsdnCardState *cs = pc->st->l1.hardware; |
| 2252 | |
| 2253 | L3DelTimer(&pc->timer); /* remove timer */ |
| 2254 | |
| 2255 | ic.driver = cs->myid; |
| 2256 | ic.command = ISDN_STAT_PROT; |
| 2257 | ic.arg = DSS1_STAT_INVOKE_ERR; |
| 2258 | ic.parm.dss1_io.hl_id = pc->prot.dss1.invoke_id; |
| 2259 | ic.parm.dss1_io.ll_id = pc->prot.dss1.ll_id; |
| 2260 | ic.parm.dss1_io.proc = pc->prot.dss1.proc; |
| 2261 | ic.parm.dss1_io.timeout= -1; |
| 2262 | ic.parm.dss1_io.datalen = 0; |
| 2263 | ic.parm.dss1_io.data = NULL; |
| 2264 | free_invoke_id(pc->st, pc->prot.dss1.invoke_id); |
| 2265 | pc->prot.dss1.invoke_id = 0; /* reset id */ |
| 2266 | |
| 2267 | cs->iif.statcallb(&ic); |
| 2268 | |
| 2269 | dss1_release_l3_process(pc); |
| 2270 | } /* l3dss1_io_timer */ |
| 2271 | |
| 2272 | static void |
| 2273 | l3dss1_release_ind(struct l3_process *pc, u_char pr, void *arg) |
| 2274 | { |
| 2275 | u_char *p; |
| 2276 | struct sk_buff *skb = arg; |
| 2277 | int callState = 0; |
| 2278 | p = skb->data; |
| 2279 | |
| 2280 | if ((p = findie(p, skb->len, IE_CALL_STATE, 0))) { |
| 2281 | p++; |
| 2282 | if (1 == *p++) |
| 2283 | callState = *p; |
| 2284 | } |
| 2285 | if (callState == 0) { |
| 2286 | /* ETS 300-104 7.6.1, 8.6.1, 10.6.1... and 16.1 |
| 2287 | * set down layer 3 without sending any message |
| 2288 | */ |
| 2289 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); |
| 2290 | newl3state(pc, 0); |
| 2291 | dss1_release_l3_process(pc); |
| 2292 | } else { |
| 2293 | pc->st->l3.l3l4(pc->st, CC_IGNORE | INDICATION, pc); |
| 2294 | } |
| 2295 | } |
| 2296 | |
| 2297 | static void |
| 2298 | l3dss1_dummy(struct l3_process *pc, u_char pr, void *arg) |
| 2299 | { |
| 2300 | } |
| 2301 | |
| 2302 | static void |
| 2303 | l3dss1_t302(struct l3_process *pc, u_char pr, void *arg) |
| 2304 | { |
| 2305 | L3DelTimer(&pc->timer); |
| 2306 | pc->para.loc = 0; |
| 2307 | pc->para.cause = 28; /* invalid number */ |
| 2308 | l3dss1_disconnect_req(pc, pr, NULL); |
| 2309 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); |
| 2310 | } |
| 2311 | |
| 2312 | static void |
| 2313 | l3dss1_t303(struct l3_process *pc, u_char pr, void *arg) |
| 2314 | { |
| 2315 | if (pc->N303 > 0) { |
| 2316 | pc->N303--; |
| 2317 | L3DelTimer(&pc->timer); |
| 2318 | l3dss1_setup_req(pc, pr, arg); |
| 2319 | } else { |
| 2320 | L3DelTimer(&pc->timer); |
| 2321 | l3dss1_message_cause(pc, MT_RELEASE_COMPLETE, 102); |
| 2322 | pc->st->l3.l3l4(pc->st, CC_NOSETUP_RSP, pc); |
| 2323 | dss1_release_l3_process(pc); |
| 2324 | } |
| 2325 | } |
| 2326 | |
| 2327 | static void |
| 2328 | l3dss1_t304(struct l3_process *pc, u_char pr, void *arg) |
| 2329 | { |
| 2330 | L3DelTimer(&pc->timer); |
| 2331 | pc->para.loc = 0; |
| 2332 | pc->para.cause = 102; |
| 2333 | l3dss1_disconnect_req(pc, pr, NULL); |
| 2334 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); |
| 2335 | |
| 2336 | } |
| 2337 | |
| 2338 | static void |
| 2339 | l3dss1_t305(struct l3_process *pc, u_char pr, void *arg) |
| 2340 | { |
| 2341 | u_char tmp[16]; |
| 2342 | u_char *p = tmp; |
| 2343 | int l; |
| 2344 | struct sk_buff *skb; |
| 2345 | u_char cause = 16; |
| 2346 | |
| 2347 | L3DelTimer(&pc->timer); |
| 2348 | if (pc->para.cause != NO_CAUSE) |
| 2349 | cause = pc->para.cause; |
| 2350 | |
| 2351 | MsgHead(p, pc->callref, MT_RELEASE); |
| 2352 | |
| 2353 | *p++ = IE_CAUSE; |
| 2354 | *p++ = 0x2; |
| 2355 | *p++ = 0x80; |
| 2356 | *p++ = cause | 0x80; |
| 2357 | |
| 2358 | l = p - tmp; |
| 2359 | if (!(skb = l3_alloc_skb(l))) |
| 2360 | return; |
| 2361 | memcpy(skb_put(skb, l), tmp, l); |
| 2362 | newl3state(pc, 19); |
| 2363 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 2364 | L3AddTimer(&pc->timer, T308, CC_T308_1); |
| 2365 | } |
| 2366 | |
| 2367 | static void |
| 2368 | l3dss1_t310(struct l3_process *pc, u_char pr, void *arg) |
| 2369 | { |
| 2370 | L3DelTimer(&pc->timer); |
| 2371 | pc->para.loc = 0; |
| 2372 | pc->para.cause = 102; |
| 2373 | l3dss1_disconnect_req(pc, pr, NULL); |
| 2374 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); |
| 2375 | } |
| 2376 | |
| 2377 | static void |
| 2378 | l3dss1_t313(struct l3_process *pc, u_char pr, void *arg) |
| 2379 | { |
| 2380 | L3DelTimer(&pc->timer); |
| 2381 | pc->para.loc = 0; |
| 2382 | pc->para.cause = 102; |
| 2383 | l3dss1_disconnect_req(pc, pr, NULL); |
| 2384 | pc->st->l3.l3l4(pc->st, CC_CONNECT_ERR, pc); |
| 2385 | } |
| 2386 | |
| 2387 | static void |
| 2388 | l3dss1_t308_1(struct l3_process *pc, u_char pr, void *arg) |
| 2389 | { |
| 2390 | newl3state(pc, 19); |
| 2391 | L3DelTimer(&pc->timer); |
| 2392 | l3dss1_message(pc, MT_RELEASE); |
| 2393 | L3AddTimer(&pc->timer, T308, CC_T308_2); |
| 2394 | } |
| 2395 | |
| 2396 | static void |
| 2397 | l3dss1_t308_2(struct l3_process *pc, u_char pr, void *arg) |
| 2398 | { |
| 2399 | L3DelTimer(&pc->timer); |
| 2400 | pc->st->l3.l3l4(pc->st, CC_RELEASE_ERR, pc); |
| 2401 | dss1_release_l3_process(pc); |
| 2402 | } |
| 2403 | |
| 2404 | static void |
| 2405 | l3dss1_t318(struct l3_process *pc, u_char pr, void *arg) |
| 2406 | { |
| 2407 | L3DelTimer(&pc->timer); |
| 2408 | pc->para.cause = 102; /* Timer expiry */ |
| 2409 | pc->para.loc = 0; /* local */ |
| 2410 | pc->st->l3.l3l4(pc->st, CC_RESUME_ERR, pc); |
| 2411 | newl3state(pc, 19); |
| 2412 | l3dss1_message(pc, MT_RELEASE); |
| 2413 | L3AddTimer(&pc->timer, T308, CC_T308_1); |
| 2414 | } |
| 2415 | |
| 2416 | static void |
| 2417 | l3dss1_t319(struct l3_process *pc, u_char pr, void *arg) |
| 2418 | { |
| 2419 | L3DelTimer(&pc->timer); |
| 2420 | pc->para.cause = 102; /* Timer expiry */ |
| 2421 | pc->para.loc = 0; /* local */ |
| 2422 | pc->st->l3.l3l4(pc->st, CC_SUSPEND_ERR, pc); |
| 2423 | newl3state(pc, 10); |
| 2424 | } |
| 2425 | |
| 2426 | static void |
| 2427 | l3dss1_restart(struct l3_process *pc, u_char pr, void *arg) |
| 2428 | { |
| 2429 | L3DelTimer(&pc->timer); |
| 2430 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); |
| 2431 | dss1_release_l3_process(pc); |
| 2432 | } |
| 2433 | |
| 2434 | static void |
| 2435 | l3dss1_status(struct l3_process *pc, u_char pr, void *arg) |
| 2436 | { |
| 2437 | u_char *p; |
| 2438 | struct sk_buff *skb = arg; |
| 2439 | int ret; |
| 2440 | u_char cause = 0, callState = 0; |
| 2441 | |
| 2442 | if ((ret = l3dss1_get_cause(pc, skb))) { |
| 2443 | if (pc->debug & L3_DEB_WARN) |
| 2444 | l3_debug(pc->st, "STATUS get_cause ret(%d)",ret); |
| 2445 | if (ret < 0) |
| 2446 | cause = 96; |
| 2447 | else if (ret > 0) |
| 2448 | cause = 100; |
| 2449 | } |
| 2450 | if ((p = findie(skb->data, skb->len, IE_CALL_STATE, 0))) { |
| 2451 | p++; |
| 2452 | if (1 == *p++) { |
| 2453 | callState = *p; |
| 2454 | if (!ie_in_set(pc, *p, l3_valid_states)) |
| 2455 | cause = 100; |
| 2456 | } else |
| 2457 | cause = 100; |
| 2458 | } else |
| 2459 | cause = 96; |
| 2460 | if (!cause) { /* no error before */ |
| 2461 | ret = check_infoelements(pc, skb, ie_STATUS); |
| 2462 | if (ERR_IE_COMPREHENSION == ret) |
| 2463 | cause = 96; |
| 2464 | else if (ERR_IE_UNRECOGNIZED == ret) |
| 2465 | cause = 99; |
| 2466 | } |
| 2467 | if (cause) { |
| 2468 | u_char tmp; |
| 2469 | |
| 2470 | if (pc->debug & L3_DEB_WARN) |
| 2471 | l3_debug(pc->st, "STATUS error(%d/%d)",ret,cause); |
| 2472 | tmp = pc->para.cause; |
| 2473 | pc->para.cause = cause; |
| 2474 | l3dss1_status_send(pc, 0, NULL); |
| 2475 | if (cause == 99) |
| 2476 | pc->para.cause = tmp; |
| 2477 | else |
| 2478 | return; |
| 2479 | } |
| 2480 | cause = pc->para.cause; |
| 2481 | if (((cause & 0x7f) == 111) && (callState == 0)) { |
| 2482 | /* ETS 300-104 7.6.1, 8.6.1, 10.6.1... |
| 2483 | * if received MT_STATUS with cause == 111 and call |
| 2484 | * state == 0, then we must set down layer 3 |
| 2485 | */ |
| 2486 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); |
| 2487 | newl3state(pc, 0); |
| 2488 | dss1_release_l3_process(pc); |
| 2489 | } |
| 2490 | } |
| 2491 | |
| 2492 | static void |
| 2493 | l3dss1_facility(struct l3_process *pc, u_char pr, void *arg) |
| 2494 | { |
| 2495 | struct sk_buff *skb = arg; |
| 2496 | int ret; |
| 2497 | |
| 2498 | ret = check_infoelements(pc, skb, ie_FACILITY); |
| 2499 | l3dss1_std_ie_err(pc, ret); |
| 2500 | { |
| 2501 | u_char *p; |
| 2502 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) |
| 2503 | l3dss1_parse_facility(pc->st, pc, pc->callref, p); |
| 2504 | } |
| 2505 | } |
| 2506 | |
| 2507 | static void |
| 2508 | l3dss1_suspend_req(struct l3_process *pc, u_char pr, void *arg) |
| 2509 | { |
| 2510 | struct sk_buff *skb; |
| 2511 | u_char tmp[32]; |
| 2512 | u_char *p = tmp; |
| 2513 | u_char i, l; |
| 2514 | u_char *msg = pc->chan->setup.phone; |
| 2515 | |
| 2516 | MsgHead(p, pc->callref, MT_SUSPEND); |
| 2517 | l = *msg++; |
| 2518 | if (l && (l <= 10)) { /* Max length 10 octets */ |
| 2519 | *p++ = IE_CALL_ID; |
| 2520 | *p++ = l; |
| 2521 | for (i = 0; i < l; i++) |
| 2522 | *p++ = *msg++; |
| 2523 | } else if (l) { |
| 2524 | l3_debug(pc->st, "SUS wrong CALL_ID len %d", l); |
| 2525 | return; |
| 2526 | } |
| 2527 | l = p - tmp; |
| 2528 | if (!(skb = l3_alloc_skb(l))) |
| 2529 | return; |
| 2530 | memcpy(skb_put(skb, l), tmp, l); |
| 2531 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 2532 | newl3state(pc, 15); |
| 2533 | L3AddTimer(&pc->timer, T319, CC_T319); |
| 2534 | } |
| 2535 | |
| 2536 | static void |
| 2537 | l3dss1_suspend_ack(struct l3_process *pc, u_char pr, void *arg) |
| 2538 | { |
| 2539 | struct sk_buff *skb = arg; |
| 2540 | int ret; |
| 2541 | |
| 2542 | L3DelTimer(&pc->timer); |
| 2543 | newl3state(pc, 0); |
| 2544 | pc->para.cause = NO_CAUSE; |
| 2545 | pc->st->l3.l3l4(pc->st, CC_SUSPEND | CONFIRM, pc); |
| 2546 | /* We don't handle suspend_ack for IE errors now */ |
| 2547 | if ((ret = check_infoelements(pc, skb, ie_SUSPEND_ACKNOWLEDGE))) |
| 2548 | if (pc->debug & L3_DEB_WARN) |
| 2549 | l3_debug(pc->st, "SUSPACK check ie(%d)",ret); |
| 2550 | dss1_release_l3_process(pc); |
| 2551 | } |
| 2552 | |
| 2553 | static void |
| 2554 | l3dss1_suspend_rej(struct l3_process *pc, u_char pr, void *arg) |
| 2555 | { |
| 2556 | struct sk_buff *skb = arg; |
| 2557 | int ret; |
| 2558 | |
| 2559 | if ((ret = l3dss1_get_cause(pc, skb))) { |
| 2560 | if (pc->debug & L3_DEB_WARN) |
| 2561 | l3_debug(pc->st, "SUSP_REJ get_cause ret(%d)",ret); |
| 2562 | if (ret < 0) |
| 2563 | pc->para.cause = 96; |
| 2564 | else |
| 2565 | pc->para.cause = 100; |
| 2566 | l3dss1_status_send(pc, pr, NULL); |
| 2567 | return; |
| 2568 | } |
| 2569 | ret = check_infoelements(pc, skb, ie_SUSPEND_REJECT); |
| 2570 | if (ERR_IE_COMPREHENSION == ret) { |
| 2571 | l3dss1_std_ie_err(pc, ret); |
| 2572 | return; |
| 2573 | } |
| 2574 | L3DelTimer(&pc->timer); |
| 2575 | pc->st->l3.l3l4(pc->st, CC_SUSPEND_ERR, pc); |
| 2576 | newl3state(pc, 10); |
| 2577 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ |
| 2578 | l3dss1_std_ie_err(pc, ret); |
| 2579 | } |
| 2580 | |
| 2581 | static void |
| 2582 | l3dss1_resume_req(struct l3_process *pc, u_char pr, void *arg) |
| 2583 | { |
| 2584 | struct sk_buff *skb; |
| 2585 | u_char tmp[32]; |
| 2586 | u_char *p = tmp; |
| 2587 | u_char i, l; |
| 2588 | u_char *msg = pc->para.setup.phone; |
| 2589 | |
| 2590 | MsgHead(p, pc->callref, MT_RESUME); |
| 2591 | |
| 2592 | l = *msg++; |
| 2593 | if (l && (l <= 10)) { /* Max length 10 octets */ |
| 2594 | *p++ = IE_CALL_ID; |
| 2595 | *p++ = l; |
| 2596 | for (i = 0; i < l; i++) |
| 2597 | *p++ = *msg++; |
| 2598 | } else if (l) { |
| 2599 | l3_debug(pc->st, "RES wrong CALL_ID len %d", l); |
| 2600 | return; |
| 2601 | } |
| 2602 | l = p - tmp; |
| 2603 | if (!(skb = l3_alloc_skb(l))) |
| 2604 | return; |
| 2605 | memcpy(skb_put(skb, l), tmp, l); |
| 2606 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 2607 | newl3state(pc, 17); |
| 2608 | L3AddTimer(&pc->timer, T318, CC_T318); |
| 2609 | } |
| 2610 | |
| 2611 | static void |
| 2612 | l3dss1_resume_ack(struct l3_process *pc, u_char pr, void *arg) |
| 2613 | { |
| 2614 | struct sk_buff *skb = arg; |
| 2615 | int id, ret; |
| 2616 | |
| 2617 | if ((id = l3dss1_get_channel_id(pc, skb)) > 0) { |
| 2618 | if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) { |
| 2619 | if (pc->debug & L3_DEB_WARN) |
| 2620 | l3_debug(pc->st, "resume ack with wrong chid %x", id); |
| 2621 | pc->para.cause = 100; |
| 2622 | l3dss1_status_send(pc, pr, NULL); |
| 2623 | return; |
| 2624 | } |
| 2625 | pc->para.bchannel = id; |
| 2626 | } else if (1 == pc->state) { |
| 2627 | if (pc->debug & L3_DEB_WARN) |
| 2628 | l3_debug(pc->st, "resume ack without chid (ret %d)", id); |
| 2629 | pc->para.cause = 96; |
| 2630 | l3dss1_status_send(pc, pr, NULL); |
| 2631 | return; |
| 2632 | } |
| 2633 | ret = check_infoelements(pc, skb, ie_RESUME_ACKNOWLEDGE); |
| 2634 | if (ERR_IE_COMPREHENSION == ret) { |
| 2635 | l3dss1_std_ie_err(pc, ret); |
| 2636 | return; |
| 2637 | } |
| 2638 | L3DelTimer(&pc->timer); |
| 2639 | pc->st->l3.l3l4(pc->st, CC_RESUME | CONFIRM, pc); |
| 2640 | newl3state(pc, 10); |
| 2641 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ |
| 2642 | l3dss1_std_ie_err(pc, ret); |
| 2643 | } |
| 2644 | |
| 2645 | static void |
| 2646 | l3dss1_resume_rej(struct l3_process *pc, u_char pr, void *arg) |
| 2647 | { |
| 2648 | struct sk_buff *skb = arg; |
| 2649 | int ret; |
| 2650 | |
| 2651 | if ((ret = l3dss1_get_cause(pc, skb))) { |
| 2652 | if (pc->debug & L3_DEB_WARN) |
| 2653 | l3_debug(pc->st, "RES_REJ get_cause ret(%d)",ret); |
| 2654 | if (ret < 0) |
| 2655 | pc->para.cause = 96; |
| 2656 | else |
| 2657 | pc->para.cause = 100; |
| 2658 | l3dss1_status_send(pc, pr, NULL); |
| 2659 | return; |
| 2660 | } |
| 2661 | ret = check_infoelements(pc, skb, ie_RESUME_REJECT); |
| 2662 | if (ERR_IE_COMPREHENSION == ret) { |
| 2663 | l3dss1_std_ie_err(pc, ret); |
| 2664 | return; |
| 2665 | } |
| 2666 | L3DelTimer(&pc->timer); |
| 2667 | pc->st->l3.l3l4(pc->st, CC_RESUME_ERR, pc); |
| 2668 | newl3state(pc, 0); |
| 2669 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ |
| 2670 | l3dss1_std_ie_err(pc, ret); |
| 2671 | dss1_release_l3_process(pc); |
| 2672 | } |
| 2673 | |
| 2674 | static void |
| 2675 | l3dss1_global_restart(struct l3_process *pc, u_char pr, void *arg) |
| 2676 | { |
| 2677 | u_char tmp[32]; |
| 2678 | u_char *p; |
| 2679 | u_char ri, ch = 0, chan = 0; |
| 2680 | int l; |
| 2681 | struct sk_buff *skb = arg; |
| 2682 | struct l3_process *up; |
| 2683 | |
| 2684 | newl3state(pc, 2); |
| 2685 | L3DelTimer(&pc->timer); |
| 2686 | p = skb->data; |
| 2687 | if ((p = findie(p, skb->len, IE_RESTART_IND, 0))) { |
| 2688 | ri = p[2]; |
| 2689 | l3_debug(pc->st, "Restart %x", ri); |
| 2690 | } else { |
| 2691 | l3_debug(pc->st, "Restart without restart IE"); |
| 2692 | ri = 0x86; |
| 2693 | } |
| 2694 | p = skb->data; |
| 2695 | if ((p = findie(p, skb->len, IE_CHANNEL_ID, 0))) { |
| 2696 | chan = p[2] & 3; |
| 2697 | ch = p[2]; |
| 2698 | if (pc->st->l3.debug) |
| 2699 | l3_debug(pc->st, "Restart for channel %d", chan); |
| 2700 | } |
| 2701 | newl3state(pc, 2); |
| 2702 | up = pc->st->l3.proc; |
| 2703 | while (up) { |
| 2704 | if ((ri & 7) == 7) |
| 2705 | up->st->lli.l4l3(up->st, CC_RESTART | REQUEST, up); |
| 2706 | else if (up->para.bchannel == chan) |
| 2707 | up->st->lli.l4l3(up->st, CC_RESTART | REQUEST, up); |
| 2708 | up = up->next; |
| 2709 | } |
| 2710 | p = tmp; |
| 2711 | MsgHead(p, pc->callref, MT_RESTART_ACKNOWLEDGE); |
| 2712 | if (chan) { |
| 2713 | *p++ = IE_CHANNEL_ID; |
| 2714 | *p++ = 1; |
| 2715 | *p++ = ch | 0x80; |
| 2716 | } |
| 2717 | *p++ = 0x79; /* RESTART Ind */ |
| 2718 | *p++ = 1; |
| 2719 | *p++ = ri; |
| 2720 | l = p - tmp; |
| 2721 | if (!(skb = l3_alloc_skb(l))) |
| 2722 | return; |
| 2723 | memcpy(skb_put(skb, l), tmp, l); |
| 2724 | newl3state(pc, 0); |
| 2725 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
| 2726 | } |
| 2727 | |
| 2728 | static void |
| 2729 | l3dss1_dl_reset(struct l3_process *pc, u_char pr, void *arg) |
| 2730 | { |
| 2731 | pc->para.cause = 0x29; /* Temporary failure */ |
| 2732 | pc->para.loc = 0; |
| 2733 | l3dss1_disconnect_req(pc, pr, NULL); |
| 2734 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); |
| 2735 | } |
| 2736 | |
| 2737 | static void |
| 2738 | l3dss1_dl_release(struct l3_process *pc, u_char pr, void *arg) |
| 2739 | { |
| 2740 | newl3state(pc, 0); |
| 2741 | pc->para.cause = 0x1b; /* Destination out of order */ |
| 2742 | pc->para.loc = 0; |
| 2743 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); |
| 2744 | release_l3_process(pc); |
| 2745 | } |
| 2746 | |
| 2747 | static void |
| 2748 | l3dss1_dl_reestablish(struct l3_process *pc, u_char pr, void *arg) |
| 2749 | { |
| 2750 | L3DelTimer(&pc->timer); |
| 2751 | L3AddTimer(&pc->timer, T309, CC_T309); |
| 2752 | l3_msg(pc->st, DL_ESTABLISH | REQUEST, NULL); |
| 2753 | } |
| 2754 | |
| 2755 | static void |
| 2756 | l3dss1_dl_reest_status(struct l3_process *pc, u_char pr, void *arg) |
| 2757 | { |
| 2758 | L3DelTimer(&pc->timer); |
| 2759 | |
| 2760 | pc->para.cause = 0x1F; /* normal, unspecified */ |
| 2761 | l3dss1_status_send(pc, 0, NULL); |
| 2762 | } |
| 2763 | |
| 2764 | /* *INDENT-OFF* */ |
| 2765 | static struct stateentry downstatelist[] = |
| 2766 | { |
| 2767 | {SBIT(0), |
| 2768 | CC_SETUP | REQUEST, l3dss1_setup_req}, |
| 2769 | {SBIT(0), |
| 2770 | CC_RESUME | REQUEST, l3dss1_resume_req}, |
| 2771 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(6) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(25), |
| 2772 | CC_DISCONNECT | REQUEST, l3dss1_disconnect_req}, |
| 2773 | {SBIT(12), |
| 2774 | CC_RELEASE | REQUEST, l3dss1_release_req}, |
| 2775 | {ALL_STATES, |
| 2776 | CC_RESTART | REQUEST, l3dss1_restart}, |
| 2777 | {SBIT(6) | SBIT(25), |
| 2778 | CC_IGNORE | REQUEST, l3dss1_reset}, |
| 2779 | {SBIT(6) | SBIT(25), |
| 2780 | CC_REJECT | REQUEST, l3dss1_reject_req}, |
| 2781 | {SBIT(6) | SBIT(25), |
| 2782 | CC_PROCEED_SEND | REQUEST, l3dss1_proceed_req}, |
| 2783 | {SBIT(6), |
| 2784 | CC_MORE_INFO | REQUEST, l3dss1_setup_ack_req}, |
| 2785 | {SBIT(25), |
| 2786 | CC_MORE_INFO | REQUEST, l3dss1_dummy}, |
| 2787 | {SBIT(6) | SBIT(9) | SBIT(25), |
| 2788 | CC_ALERTING | REQUEST, l3dss1_alert_req}, |
| 2789 | {SBIT(6) | SBIT(7) | SBIT(9) | SBIT(25), |
| 2790 | CC_SETUP | RESPONSE, l3dss1_setup_rsp}, |
| 2791 | {SBIT(10), |
| 2792 | CC_SUSPEND | REQUEST, l3dss1_suspend_req}, |
| 2793 | {SBIT(7) | SBIT(9) | SBIT(25), |
| 2794 | CC_REDIR | REQUEST, l3dss1_redir_req}, |
| 2795 | {SBIT(6), |
| 2796 | CC_REDIR | REQUEST, l3dss1_redir_req_early}, |
| 2797 | {SBIT(9) | SBIT(25), |
| 2798 | CC_DISCONNECT | REQUEST, l3dss1_disconnect_req}, |
| 2799 | {SBIT(25), |
| 2800 | CC_T302, l3dss1_t302}, |
| 2801 | {SBIT(1), |
| 2802 | CC_T303, l3dss1_t303}, |
| 2803 | {SBIT(2), |
| 2804 | CC_T304, l3dss1_t304}, |
| 2805 | {SBIT(3), |
| 2806 | CC_T310, l3dss1_t310}, |
| 2807 | {SBIT(8), |
| 2808 | CC_T313, l3dss1_t313}, |
| 2809 | {SBIT(11), |
| 2810 | CC_T305, l3dss1_t305}, |
| 2811 | {SBIT(15), |
| 2812 | CC_T319, l3dss1_t319}, |
| 2813 | {SBIT(17), |
| 2814 | CC_T318, l3dss1_t318}, |
| 2815 | {SBIT(19), |
| 2816 | CC_T308_1, l3dss1_t308_1}, |
| 2817 | {SBIT(19), |
| 2818 | CC_T308_2, l3dss1_t308_2}, |
| 2819 | {SBIT(10), |
| 2820 | CC_T309, l3dss1_dl_release}, |
| 2821 | }; |
| 2822 | |
| 2823 | #define DOWNSLLEN \ |
| 2824 | (sizeof(downstatelist) / sizeof(struct stateentry)) |
| 2825 | |
| 2826 | static struct stateentry datastatelist[] = |
| 2827 | { |
| 2828 | {ALL_STATES, |
| 2829 | MT_STATUS_ENQUIRY, l3dss1_status_enq}, |
| 2830 | {ALL_STATES, |
| 2831 | MT_FACILITY, l3dss1_facility}, |
| 2832 | {SBIT(19), |
| 2833 | MT_STATUS, l3dss1_release_ind}, |
| 2834 | {ALL_STATES, |
| 2835 | MT_STATUS, l3dss1_status}, |
| 2836 | {SBIT(0), |
| 2837 | MT_SETUP, l3dss1_setup}, |
| 2838 | {SBIT(6) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(12) | |
| 2839 | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25), |
| 2840 | MT_SETUP, l3dss1_dummy}, |
| 2841 | {SBIT(1) | SBIT(2), |
| 2842 | MT_CALL_PROCEEDING, l3dss1_call_proc}, |
| 2843 | {SBIT(1), |
| 2844 | MT_SETUP_ACKNOWLEDGE, l3dss1_setup_ack}, |
| 2845 | {SBIT(2) | SBIT(3), |
| 2846 | MT_ALERTING, l3dss1_alerting}, |
| 2847 | {SBIT(2) | SBIT(3), |
| 2848 | MT_PROGRESS, l3dss1_progress}, |
| 2849 | {SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | |
| 2850 | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25), |
| 2851 | MT_INFORMATION, l3dss1_information}, |
| 2852 | {SBIT(10) | SBIT(11) | SBIT(15), |
| 2853 | MT_NOTIFY, l3dss1_notify}, |
| 2854 | {SBIT(0) | SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(10) | |
| 2855 | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25), |
| 2856 | MT_RELEASE_COMPLETE, l3dss1_release_cmpl}, |
| 2857 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(25), |
| 2858 | MT_RELEASE, l3dss1_release}, |
| 2859 | {SBIT(19), MT_RELEASE, l3dss1_release_ind}, |
| 2860 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(15) | SBIT(17) | SBIT(25), |
| 2861 | MT_DISCONNECT, l3dss1_disconnect}, |
| 2862 | {SBIT(19), |
| 2863 | MT_DISCONNECT, l3dss1_dummy}, |
| 2864 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4), |
| 2865 | MT_CONNECT, l3dss1_connect}, |
| 2866 | {SBIT(8), |
| 2867 | MT_CONNECT_ACKNOWLEDGE, l3dss1_connect_ack}, |
| 2868 | {SBIT(15), |
| 2869 | MT_SUSPEND_ACKNOWLEDGE, l3dss1_suspend_ack}, |
| 2870 | {SBIT(15), |
| 2871 | MT_SUSPEND_REJECT, l3dss1_suspend_rej}, |
| 2872 | {SBIT(17), |
| 2873 | MT_RESUME_ACKNOWLEDGE, l3dss1_resume_ack}, |
| 2874 | {SBIT(17), |
| 2875 | MT_RESUME_REJECT, l3dss1_resume_rej}, |
| 2876 | }; |
| 2877 | |
| 2878 | #define DATASLLEN \ |
| 2879 | (sizeof(datastatelist) / sizeof(struct stateentry)) |
| 2880 | |
| 2881 | static struct stateentry globalmes_list[] = |
| 2882 | { |
| 2883 | {ALL_STATES, |
| 2884 | MT_STATUS, l3dss1_status}, |
| 2885 | {SBIT(0), |
| 2886 | MT_RESTART, l3dss1_global_restart}, |
| 2887 | /* {SBIT(1), |
| 2888 | MT_RESTART_ACKNOWLEDGE, l3dss1_restart_ack}, |
| 2889 | */ |
| 2890 | }; |
| 2891 | #define GLOBALM_LEN \ |
| 2892 | (sizeof(globalmes_list) / sizeof(struct stateentry)) |
| 2893 | |
| 2894 | static struct stateentry manstatelist[] = |
| 2895 | { |
| 2896 | {SBIT(2), |
| 2897 | DL_ESTABLISH | INDICATION, l3dss1_dl_reset}, |
| 2898 | {SBIT(10), |
| 2899 | DL_ESTABLISH | CONFIRM, l3dss1_dl_reest_status}, |
| 2900 | {SBIT(10), |
| 2901 | DL_RELEASE | INDICATION, l3dss1_dl_reestablish}, |
| 2902 | {ALL_STATES, |
| 2903 | DL_RELEASE | INDICATION, l3dss1_dl_release}, |
| 2904 | }; |
| 2905 | |
| 2906 | #define MANSLLEN \ |
| 2907 | (sizeof(manstatelist) / sizeof(struct stateentry)) |
| 2908 | /* *INDENT-ON* */ |
| 2909 | |
| 2910 | |
| 2911 | static void |
| 2912 | global_handler(struct PStack *st, int mt, struct sk_buff *skb) |
| 2913 | { |
| 2914 | u_char tmp[16]; |
| 2915 | u_char *p = tmp; |
| 2916 | int l; |
| 2917 | int i; |
| 2918 | struct l3_process *proc = st->l3.global; |
| 2919 | |
| 2920 | proc->callref = skb->data[2]; /* cr flag */ |
| 2921 | for (i = 0; i < GLOBALM_LEN; i++) |
| 2922 | if ((mt == globalmes_list[i].primitive) && |
| 2923 | ((1 << proc->state) & globalmes_list[i].state)) |
| 2924 | break; |
| 2925 | if (i == GLOBALM_LEN) { |
| 2926 | if (st->l3.debug & L3_DEB_STATE) { |
| 2927 | l3_debug(st, "dss1 global state %d mt %x unhandled", |
| 2928 | proc->state, mt); |
| 2929 | } |
| 2930 | MsgHead(p, proc->callref, MT_STATUS); |
| 2931 | *p++ = IE_CAUSE; |
| 2932 | *p++ = 0x2; |
| 2933 | *p++ = 0x80; |
| 2934 | *p++ = 81 |0x80; /* invalid cr */ |
| 2935 | *p++ = 0x14; /* CallState */ |
| 2936 | *p++ = 0x1; |
| 2937 | *p++ = proc->state & 0x3f; |
| 2938 | l = p - tmp; |
| 2939 | if (!(skb = l3_alloc_skb(l))) |
| 2940 | return; |
| 2941 | memcpy(skb_put(skb, l), tmp, l); |
| 2942 | l3_msg(proc->st, DL_DATA | REQUEST, skb); |
| 2943 | } else { |
| 2944 | if (st->l3.debug & L3_DEB_STATE) { |
| 2945 | l3_debug(st, "dss1 global %d mt %x", |
| 2946 | proc->state, mt); |
| 2947 | } |
| 2948 | globalmes_list[i].rout(proc, mt, skb); |
| 2949 | } |
| 2950 | } |
| 2951 | |
| 2952 | static void |
| 2953 | dss1up(struct PStack *st, int pr, void *arg) |
| 2954 | { |
| 2955 | int i, mt, cr, cause, callState; |
| 2956 | char *ptr; |
| 2957 | u_char *p; |
| 2958 | struct sk_buff *skb = arg; |
| 2959 | struct l3_process *proc; |
| 2960 | |
| 2961 | switch (pr) { |
| 2962 | case (DL_DATA | INDICATION): |
| 2963 | case (DL_UNIT_DATA | INDICATION): |
| 2964 | break; |
| 2965 | case (DL_ESTABLISH | CONFIRM): |
| 2966 | case (DL_ESTABLISH | INDICATION): |
| 2967 | case (DL_RELEASE | INDICATION): |
| 2968 | case (DL_RELEASE | CONFIRM): |
| 2969 | l3_msg(st, pr, arg); |
| 2970 | return; |
| 2971 | break; |
| 2972 | default: |
| 2973 | printk(KERN_ERR "HiSax dss1up unknown pr=%04x\n", pr); |
| 2974 | return; |
| 2975 | } |
| 2976 | if (skb->len < 3) { |
| 2977 | l3_debug(st, "dss1up frame too short(%d)", skb->len); |
| 2978 | dev_kfree_skb(skb); |
| 2979 | return; |
| 2980 | } |
| 2981 | |
| 2982 | if (skb->data[0] != PROTO_DIS_EURO) { |
| 2983 | if (st->l3.debug & L3_DEB_PROTERR) { |
| 2984 | l3_debug(st, "dss1up%sunexpected discriminator %x message len %d", |
| 2985 | (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", |
| 2986 | skb->data[0], skb->len); |
| 2987 | } |
| 2988 | dev_kfree_skb(skb); |
| 2989 | return; |
| 2990 | } |
| 2991 | cr = getcallref(skb->data); |
| 2992 | if (skb->len < ((skb->data[1] & 0x0f) + 3)) { |
| 2993 | l3_debug(st, "dss1up frame too short(%d)", skb->len); |
| 2994 | dev_kfree_skb(skb); |
| 2995 | return; |
| 2996 | } |
| 2997 | mt = skb->data[skb->data[1] + 2]; |
| 2998 | if (st->l3.debug & L3_DEB_STATE) |
| 2999 | l3_debug(st, "dss1up cr %d", cr); |
| 3000 | if (cr == -2) { /* wrong Callref */ |
| 3001 | if (st->l3.debug & L3_DEB_WARN) |
| 3002 | l3_debug(st, "dss1up wrong Callref"); |
| 3003 | dev_kfree_skb(skb); |
| 3004 | return; |
| 3005 | } else if (cr == -1) { /* Dummy Callref */ |
| 3006 | if (mt == MT_FACILITY) |
| 3007 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) { |
| 3008 | l3dss1_parse_facility(st, NULL, |
| 3009 | (pr == (DL_DATA | INDICATION)) ? -1 : -2, p); |
| 3010 | dev_kfree_skb(skb); |
| 3011 | return; |
| 3012 | } |
| 3013 | if (st->l3.debug & L3_DEB_WARN) |
| 3014 | l3_debug(st, "dss1up dummy Callref (no facility msg or ie)"); |
| 3015 | dev_kfree_skb(skb); |
| 3016 | return; |
| 3017 | } else if ((((skb->data[1] & 0x0f) == 1) && (0==(cr & 0x7f))) || |
| 3018 | (((skb->data[1] & 0x0f) == 2) && (0==(cr & 0x7fff)))) { /* Global CallRef */ |
| 3019 | if (st->l3.debug & L3_DEB_STATE) |
| 3020 | l3_debug(st, "dss1up Global CallRef"); |
| 3021 | global_handler(st, mt, skb); |
| 3022 | dev_kfree_skb(skb); |
| 3023 | return; |
| 3024 | } else if (!(proc = getl3proc(st, cr))) { |
| 3025 | /* No transaction process exist, that means no call with |
| 3026 | * this callreference is active |
| 3027 | */ |
| 3028 | if (mt == MT_SETUP) { |
| 3029 | /* Setup creates a new transaction process */ |
| 3030 | if (skb->data[2] & 0x80) { |
| 3031 | /* Setup with wrong CREF flag */ |
| 3032 | if (st->l3.debug & L3_DEB_STATE) |
| 3033 | l3_debug(st, "dss1up wrong CRef flag"); |
| 3034 | dev_kfree_skb(skb); |
| 3035 | return; |
| 3036 | } |
| 3037 | if (!(proc = dss1_new_l3_process(st, cr))) { |
| 3038 | /* May be to answer with RELEASE_COMPLETE and |
| 3039 | * CAUSE 0x2f "Resource unavailable", but this |
| 3040 | * need a new_l3_process too ... arghh |
| 3041 | */ |
| 3042 | dev_kfree_skb(skb); |
| 3043 | return; |
| 3044 | } |
| 3045 | } else if (mt == MT_STATUS) { |
| 3046 | cause = 0; |
| 3047 | if ((ptr = findie(skb->data, skb->len, IE_CAUSE, 0)) != NULL) { |
| 3048 | ptr++; |
| 3049 | if (*ptr++ == 2) |
| 3050 | ptr++; |
| 3051 | cause = *ptr & 0x7f; |
| 3052 | } |
| 3053 | callState = 0; |
| 3054 | if ((ptr = findie(skb->data, skb->len, IE_CALL_STATE, 0)) != NULL) { |
| 3055 | ptr++; |
| 3056 | if (*ptr++ == 2) |
| 3057 | ptr++; |
| 3058 | callState = *ptr; |
| 3059 | } |
| 3060 | /* ETS 300-104 part 2.4.1 |
| 3061 | * if setup has not been made and a message type |
| 3062 | * MT_STATUS is received with call state == 0, |
| 3063 | * we must send nothing |
| 3064 | */ |
| 3065 | if (callState != 0) { |
| 3066 | /* ETS 300-104 part 2.4.2 |
| 3067 | * if setup has not been made and a message type |
| 3068 | * MT_STATUS is received with call state != 0, |
| 3069 | * we must send MT_RELEASE_COMPLETE cause 101 |
| 3070 | */ |
| 3071 | if ((proc = dss1_new_l3_process(st, cr))) { |
| 3072 | proc->para.cause = 101; |
| 3073 | l3dss1_msg_without_setup(proc, 0, NULL); |
| 3074 | } |
| 3075 | } |
| 3076 | dev_kfree_skb(skb); |
| 3077 | return; |
| 3078 | } else if (mt == MT_RELEASE_COMPLETE) { |
| 3079 | dev_kfree_skb(skb); |
| 3080 | return; |
| 3081 | } else { |
| 3082 | /* ETS 300-104 part 2 |
| 3083 | * if setup has not been made and a message type |
| 3084 | * (except MT_SETUP and RELEASE_COMPLETE) is received, |
| 3085 | * we must send MT_RELEASE_COMPLETE cause 81 */ |
| 3086 | dev_kfree_skb(skb); |
| 3087 | if ((proc = dss1_new_l3_process(st, cr))) { |
| 3088 | proc->para.cause = 81; |
| 3089 | l3dss1_msg_without_setup(proc, 0, NULL); |
| 3090 | } |
| 3091 | return; |
| 3092 | } |
| 3093 | } |
| 3094 | if (l3dss1_check_messagetype_validity(proc, mt, skb)) { |
| 3095 | dev_kfree_skb(skb); |
| 3096 | return; |
| 3097 | } |
| 3098 | if ((p = findie(skb->data, skb->len, IE_DISPLAY, 0)) != NULL) |
| 3099 | l3dss1_deliver_display(proc, pr, p); /* Display IE included */ |
| 3100 | for (i = 0; i < DATASLLEN; i++) |
| 3101 | if ((mt == datastatelist[i].primitive) && |
| 3102 | ((1 << proc->state) & datastatelist[i].state)) |
| 3103 | break; |
| 3104 | if (i == DATASLLEN) { |
| 3105 | if (st->l3.debug & L3_DEB_STATE) { |
| 3106 | l3_debug(st, "dss1up%sstate %d mt %#x unhandled", |
| 3107 | (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", |
| 3108 | proc->state, mt); |
| 3109 | } |
| 3110 | if ((MT_RELEASE_COMPLETE != mt) && (MT_RELEASE != mt)) { |
| 3111 | proc->para.cause = 101; |
| 3112 | l3dss1_status_send(proc, pr, skb); |
| 3113 | } |
| 3114 | } else { |
| 3115 | if (st->l3.debug & L3_DEB_STATE) { |
| 3116 | l3_debug(st, "dss1up%sstate %d mt %x", |
| 3117 | (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", |
| 3118 | proc->state, mt); |
| 3119 | } |
| 3120 | datastatelist[i].rout(proc, pr, skb); |
| 3121 | } |
| 3122 | dev_kfree_skb(skb); |
| 3123 | return; |
| 3124 | } |
| 3125 | |
| 3126 | static void |
| 3127 | dss1down(struct PStack *st, int pr, void *arg) |
| 3128 | { |
| 3129 | int i, cr; |
| 3130 | struct l3_process *proc; |
| 3131 | struct Channel *chan; |
| 3132 | |
| 3133 | if ((DL_ESTABLISH | REQUEST) == pr) { |
| 3134 | l3_msg(st, pr, NULL); |
| 3135 | return; |
| 3136 | } else if (((CC_SETUP | REQUEST) == pr) || ((CC_RESUME | REQUEST) == pr)) { |
| 3137 | chan = arg; |
| 3138 | cr = newcallref(); |
| 3139 | cr |= 0x80; |
| 3140 | if ((proc = dss1_new_l3_process(st, cr))) { |
| 3141 | proc->chan = chan; |
| 3142 | chan->proc = proc; |
| 3143 | memcpy(&proc->para.setup, &chan->setup, sizeof(setup_parm)); |
| 3144 | proc->callref = cr; |
| 3145 | } |
| 3146 | } else { |
| 3147 | proc = arg; |
| 3148 | } |
| 3149 | if (!proc) { |
| 3150 | printk(KERN_ERR "HiSax dss1down without proc pr=%04x\n", pr); |
| 3151 | return; |
| 3152 | } |
| 3153 | |
| 3154 | if ( pr == (CC_TDSS1_IO | REQUEST)) { |
| 3155 | l3dss1_io_timer(proc); /* timer expires */ |
| 3156 | return; |
| 3157 | } |
| 3158 | |
| 3159 | for (i = 0; i < DOWNSLLEN; i++) |
| 3160 | if ((pr == downstatelist[i].primitive) && |
| 3161 | ((1 << proc->state) & downstatelist[i].state)) |
| 3162 | break; |
| 3163 | if (i == DOWNSLLEN) { |
| 3164 | if (st->l3.debug & L3_DEB_STATE) { |
| 3165 | l3_debug(st, "dss1down state %d prim %#x unhandled", |
| 3166 | proc->state, pr); |
| 3167 | } |
| 3168 | } else { |
| 3169 | if (st->l3.debug & L3_DEB_STATE) { |
| 3170 | l3_debug(st, "dss1down state %d prim %#x", |
| 3171 | proc->state, pr); |
| 3172 | } |
| 3173 | downstatelist[i].rout(proc, pr, arg); |
| 3174 | } |
| 3175 | } |
| 3176 | |
| 3177 | static void |
| 3178 | dss1man(struct PStack *st, int pr, void *arg) |
| 3179 | { |
| 3180 | int i; |
| 3181 | struct l3_process *proc = arg; |
| 3182 | |
| 3183 | if (!proc) { |
| 3184 | printk(KERN_ERR "HiSax dss1man without proc pr=%04x\n", pr); |
| 3185 | return; |
| 3186 | } |
| 3187 | for (i = 0; i < MANSLLEN; i++) |
| 3188 | if ((pr == manstatelist[i].primitive) && |
| 3189 | ((1 << proc->state) & manstatelist[i].state)) |
| 3190 | break; |
| 3191 | if (i == MANSLLEN) { |
| 3192 | if (st->l3.debug & L3_DEB_STATE) { |
| 3193 | l3_debug(st, "cr %d dss1man state %d prim %#x unhandled", |
| 3194 | proc->callref & 0x7f, proc->state, pr); |
| 3195 | } |
| 3196 | } else { |
| 3197 | if (st->l3.debug & L3_DEB_STATE) { |
| 3198 | l3_debug(st, "cr %d dss1man state %d prim %#x", |
| 3199 | proc->callref & 0x7f, proc->state, pr); |
| 3200 | } |
| 3201 | manstatelist[i].rout(proc, pr, arg); |
| 3202 | } |
| 3203 | } |
| 3204 | |
| 3205 | void |
| 3206 | setstack_dss1(struct PStack *st) |
| 3207 | { |
| 3208 | char tmp[64]; |
| 3209 | int i; |
| 3210 | |
| 3211 | st->lli.l4l3 = dss1down; |
| 3212 | st->lli.l4l3_proto = l3dss1_cmd_global; |
| 3213 | st->l2.l2l3 = dss1up; |
| 3214 | st->l3.l3ml3 = dss1man; |
| 3215 | st->l3.N303 = 1; |
| 3216 | st->prot.dss1.last_invoke_id = 0; |
| 3217 | st->prot.dss1.invoke_used[0] = 1; /* Bit 0 must always be set to 1 */ |
| 3218 | i = 1; |
| 3219 | while (i < 32) |
| 3220 | st->prot.dss1.invoke_used[i++] = 0; |
| 3221 | |
| 3222 | if (!(st->l3.global = kmalloc(sizeof(struct l3_process), GFP_ATOMIC))) { |
| 3223 | printk(KERN_ERR "HiSax can't get memory for dss1 global CR\n"); |
| 3224 | } else { |
| 3225 | st->l3.global->state = 0; |
| 3226 | st->l3.global->callref = 0; |
| 3227 | st->l3.global->next = NULL; |
| 3228 | st->l3.global->debug = L3_DEB_WARN; |
| 3229 | st->l3.global->st = st; |
| 3230 | st->l3.global->N303 = 1; |
| 3231 | st->l3.global->prot.dss1.invoke_id = 0; |
| 3232 | |
| 3233 | L3InitTimer(st->l3.global, &st->l3.global->timer); |
| 3234 | } |
| 3235 | strcpy(tmp, dss1_revision); |
| 3236 | printk(KERN_INFO "HiSax: DSS1 Rev. %s\n", HiSax_getrev(tmp)); |
| 3237 | } |