drivers/isdn/hisax/l3_1tr6.c

   1 /* $Id: l3_1tr6.c,v 2.15.2.3 2004/01/13 14:31:25 keil Exp $
   2  *
   3  * German 1TR6 D-channel protocol
   4  *
   5  * Author       Karsten Keil
   6  * Copyright    by Karsten Keil      <keil@isdn4linux.de>
   7  *
   8  * This software may be used and distributed according to the terms
   9  * of the GNU General Public License, incorporated herein by reference.
  10  *
  11  * For changes and modifications please read
  12  * Documentation/isdn/HiSax.cert
  13  *
  14  */
  15
  16 #include "hisax.h"
  17 #include "l3_1tr6.h"
  18 #include "isdnl3.h"
  19 #include <linux/ctype.h>
  20
  21 extern char *HiSax_getrev(const char *revision);
  22 static const char *l3_1tr6_revision = "$Revision: 2.15.2.3 $";
  23
  24 #define MsgHead(ptr, cref, mty, dis)            \
  25         *ptr++ = dis;                           \
  26         *ptr++ = 0x1;                           \
  27         *ptr++ = cref ^ 0x80;                   \
  28         *ptr++ = mty
  29
  30 static void
  31 l3_1TR6_message(struct l3_process *pc, u_char mt, u_char pd)
  32 {
  33         struct sk_buff *skb;
  34         u_char *p;
  35
  36         if (!(skb = l3_alloc_skb(4)))
  37                 return;
  38         p = skb_put(skb, 4);
  39         MsgHead(p, pc->callref, mt, pd);
  40         l3_msg(pc->st, DL_DATA | REQUEST, skb);
  41 }
  42
  43 static void
  44 l3_1tr6_release_req(struct l3_process *pc, u_char pr, void *arg)
  45 {
  46         StopAllL3Timer(pc);
  47         newl3state(pc, 19);
  48         l3_1TR6_message(pc, MT_N1_REL, PROTO_DIS_N1);
  49         L3AddTimer(&pc->timer, T308, CC_T308_1);
  50 }
  51
  52 static void
  53 l3_1tr6_invalid(struct l3_process *pc, u_char pr, void *arg)
  54 {
  55         struct sk_buff *skb = arg;
  56
  57         dev_kfree_skb(skb);
  58         l3_1tr6_release_req(pc, 0, NULL);
  59 }
  60
  61 static void
  62 l3_1tr6_error(struct l3_process *pc, u_char *msg, struct sk_buff *skb)
  63 {
  64         dev_kfree_skb(skb);
  65         if (pc->st->l3.debug & L3_DEB_WARN)
  66                 l3_debug(pc->st, "%s", msg);
  67         l3_1tr6_release_req(pc, 0, NULL);
  68 }
  69
  70 static void
  71 l3_1tr6_setup_req(struct l3_process *pc, u_char pr, void *arg)
  72 {
  73         struct sk_buff *skb;
  74         u_char tmp[128];
  75         u_char *p = tmp;
  76         u_char *teln;
  77         u_char *eaz;
  78         u_char channel = 0;
  79         int l;
  80
  81         MsgHead(p, pc->callref, MT_N1_SETUP, PROTO_DIS_N1);
  82         teln = pc->para.setup.phone;
  83         pc->para.spv = 0;
  84         if (!isdigit(*teln)) {
  85                 switch (0x5f & *teln) {
  86                 case 'S':
  87                         pc->para.spv = 1;
  88                         break;
  89                 case 'C':
  90                         channel = 0x08;
  91                 case 'P':
  92                         channel |= 0x80;
  93                         teln++;
  94                         if (*teln == '1')
  95                                 channel |= 0x01;
  96                         else
  97                                 channel |= 0x02;
  98                         break;
  99                 default:
 100                         if (pc->st->l3.debug & L3_DEB_WARN)
 101                                 l3_debug(pc->st, "Wrong MSN Code");
 102                         break;
 103                 }
 104                 teln++;
 105         }
 106         if (channel) {
 107                 *p++ = 0x18;    /* channel indicator */
 108                 *p++ = 1;
 109                 *p++ = channel;
 110         }
 111         if (pc->para.spv) {     /* SPV ? */
 112                 /* NSF SPV */
 113                 *p++ = WE0_netSpecFac;
 114                 *p++ = 4;       /* Laenge */
 115                 *p++ = 0;
 116                 *p++ = FAC_SPV; /* SPV */
 117                 *p++ = pc->para.setup.si1;      /* 0 for all Services */
 118                 *p++ = pc->para.setup.si2;      /* 0 for all Services */
 119                 *p++ = WE0_netSpecFac;
 120                 *p++ = 4;       /* Laenge */
 121                 *p++ = 0;
 122                 *p++ = FAC_Activate;    /* aktiviere SPV (default) */
 123                 *p++ = pc->para.setup.si1;      /* 0 for all Services */
 124                 *p++ = pc->para.setup.si2;      /* 0 for all Services */
 125         }
 126         eaz = pc->para.setup.eazmsn;
 127         if (*eaz) {
 128                 *p++ = WE0_origAddr;
 129                 *p++ = strlen(eaz) + 1;
 130                 /* Classify as AnyPref. */
 131                 *p++ = 0x81;    /* Ext = '1'B, Type = '000'B, Plan = '0001'B. */
 132                 while (*eaz)
 133                         *p++ = *eaz++ & 0x7f;
 134         }
 135         *p++ = WE0_destAddr;
 136         *p++ = strlen(teln) + 1;
 137         /* Classify as AnyPref. */
 138         *p++ = 0x81;            /* Ext = '1'B, Type = '000'B, Plan = '0001'B. */
 139         while (*teln)
 140                 *p++ = *teln++ & 0x7f;
 141
 142         *p++ = WE_Shift_F6;
 143         /* Codesatz 6 fuer Service */
 144         *p++ = WE6_serviceInd;
 145         *p++ = 2;               /* len=2 info,info2 */
 146         *p++ = pc->para.setup.si1;
 147         *p++ = pc->para.setup.si2;
 148
 149         l = p - tmp;
 150         if (!(skb = l3_alloc_skb(l)))
 151                 return;
 152         memcpy(skb_put(skb, l), tmp, l);
 153         L3DelTimer(&pc->timer);
 154         L3AddTimer(&pc->timer, T303, CC_T303);
 155         newl3state(pc, 1);
 156         l3_msg(pc->st, DL_DATA | REQUEST, skb);
 157 }
 158
 159 static void
 160 l3_1tr6_setup(struct l3_process *pc, u_char pr, void *arg)
 161 {
 162         u_char *p;
 163         int bcfound = 0;
 164         struct sk_buff *skb = arg;
 165
 166         /* Channel Identification */
 167         p = findie(skb->data, skb->len, WE0_chanID, 0);
 168         if (p) {
 169                 if (p[1] != 1) {
 170                         l3_1tr6_error(pc, "setup wrong chanID len", skb);
 171                         return;
 172                 }
 173                 if ((p[2] & 0xf4) != 0x80) {
 174                         l3_1tr6_error(pc, "setup wrong WE0_chanID", skb);
 175                         return;
 176                 }
 177                 if ((pc->para.bchannel = p[2] & 0x3))
 178                         bcfound++;
 179         } else {
 180                 l3_1tr6_error(pc, "missing setup chanID", skb);
 181                 return;
 182         }
 183
 184         p = skb->data;
 185         if ((p = findie(p, skb->len, WE6_serviceInd, 6))) {
 186                 pc->para.setup.si1 = p[2];
 187                 pc->para.setup.si2 = p[3];
 188         } else {
 189                 l3_1tr6_error(pc, "missing setup SI", skb);
 190                 return;
 191         }
 192
 193         p = skb->data;
 194         if ((p = findie(p, skb->len, WE0_destAddr, 0)))
 195                 iecpy(pc->para.setup.eazmsn, p, 1);
 196         else
 197                 pc->para.setup.eazmsn[0] = 0;
 198
 199         p = skb->data;
 200         if ((p = findie(p, skb->len, WE0_origAddr, 0))) {
 201                 iecpy(pc->para.setup.phone, p, 1);
 202         } else
 203                 pc->para.setup.phone[0] = 0;
 204
 205         p = skb->data;
 206         pc->para.spv = 0;
 207         if ((p = findie(p, skb->len, WE0_netSpecFac, 0))) {
 208                 if ((FAC_SPV == p[3]) || (FAC_Activate == p[3]))
 209                         pc->para.spv = 1;
 210         }
 211         dev_kfree_skb(skb);
 212
 213         /* Signal all services, linklevel takes care of Service-Indicator */
 214         if (bcfound) {
 215                 if ((pc->para.setup.si1 != 7) && (pc->st->l3.debug & L3_DEB_WARN)) {
 216                         l3_debug(pc->st, "non-digital call: %s -> %s",
 217                                 pc->para.setup.phone,
 218                                 pc->para.setup.eazmsn);
 219                 }
 220                 newl3state(pc, 6);
 221                 pc->st->l3.l3l4(pc->st, CC_SETUP | INDICATION, pc);
 222         } else
 223                 release_l3_process(pc);
 224 }
 225
 226 static void
 227 l3_1tr6_setup_ack(struct l3_process *pc, u_char pr, void *arg)
 228 {
 229         u_char *p;
 230         struct sk_buff *skb = arg;
 231
 232         L3DelTimer(&pc->timer);
 233         p = skb->data;
 234         newl3state(pc, 2);
 235         if ((p = findie(p, skb->len, WE0_chanID, 0))) {
 236                 if (p[1] != 1) {
 237                         l3_1tr6_error(pc, "setup_ack wrong chanID len", skb);
 238                         return;
 239                 }
 240                 if ((p[2] & 0xf4) != 0x80) {
 241                         l3_1tr6_error(pc, "setup_ack wrong WE0_chanID", skb);
 242                         return;
 243                 }
 244                 pc->para.bchannel = p[2] & 0x3;
 245         } else {
 246                 l3_1tr6_error(pc, "missing setup_ack WE0_chanID", skb);
 247                 return;
 248         }
 249         dev_kfree_skb(skb);
 250         L3AddTimer(&pc->timer, T304, CC_T304);
 251         pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc);
 252 }
 253
 254 static void
 255 l3_1tr6_call_sent(struct l3_process *pc, u_char pr, void *arg)
 256 {
 257         u_char *p;
 258         struct sk_buff *skb = arg;
 259
 260         L3DelTimer(&pc->timer);
 261         p = skb->data;
 262         if ((p = findie(p, skb->len, WE0_chanID, 0))) {
 263                 if (p[1] != 1) {
 264                         l3_1tr6_error(pc, "call sent wrong chanID len", skb);
 265                         return;
 266                 }
 267                 if ((p[2] & 0xf4) != 0x80) {
 268                         l3_1tr6_error(pc, "call sent wrong WE0_chanID", skb);
 269                         return;
 270                 }
 271                 if ((pc->state == 2) && (pc->para.bchannel != (p[2] & 0x3))) {
 272                         l3_1tr6_error(pc, "call sent wrong chanID value", skb);
 273                         return;
 274                 }
 275                 pc->para.bchannel = p[2] & 0x3;
 276         } else {
 277                 l3_1tr6_error(pc, "missing call sent WE0_chanID", skb);
 278                 return;
 279         }
 280         dev_kfree_skb(skb);
 281         L3AddTimer(&pc->timer, T310, CC_T310);
 282         newl3state(pc, 3);
 283         pc->st->l3.l3l4(pc->st, CC_PROCEEDING | INDICATION, pc);
 284 }
 285
 286 static void
 287 l3_1tr6_alert(struct l3_process *pc, u_char pr, void *arg)
 288 {
 289         struct sk_buff *skb = arg;
 290
 291         dev_kfree_skb(skb);
 292         L3DelTimer(&pc->timer); /* T304 */
 293         newl3state(pc, 4);
 294         pc->st->l3.l3l4(pc->st, CC_ALERTING | INDICATION, pc);
 295 }
 296
 297 static void
 298 l3_1tr6_info(struct l3_process *pc, u_char pr, void *arg)
 299 {
 300         u_char *p;
 301         int i, tmpcharge = 0;
 302         char a_charge[8];
 303         struct sk_buff *skb = arg;
 304
 305         p = skb->data;
 306         if ((p = findie(p, skb->len, WE6_chargingInfo, 6))) {
 307                 iecpy(a_charge, p, 1);
 308                 for (i = 0; i < strlen(a_charge); i++) {
 309                         tmpcharge *= 10;
 310                         tmpcharge += a_charge[i] & 0xf;
 311                 }
 312                 if (tmpcharge > pc->para.chargeinfo) {
 313                         pc->para.chargeinfo = tmpcharge;
 314                         pc->st->l3.l3l4(pc->st, CC_CHARGE | INDICATION, pc);
 315                 }
 316                 if (pc->st->l3.debug & L3_DEB_CHARGE) {
 317                         l3_debug(pc->st, "charging info %d",
 318                                  pc->para.chargeinfo);
 319                 }
 320         } else if (pc->st->l3.debug & L3_DEB_CHARGE)
 321                 l3_debug(pc->st, "charging info not found");
 322         dev_kfree_skb(skb);
 323
 324 }
 325
 326 static void
 327 l3_1tr6_info_s2(struct l3_process *pc, u_char pr, void *arg)
 328 {
 329         struct sk_buff *skb = arg;
 330
 331         dev_kfree_skb(skb);
 332 }
 333
 334 static void
 335 l3_1tr6_connect(struct l3_process *pc, u_char pr, void *arg)
 336 {
 337         struct sk_buff *skb = arg;
 338
 339         L3DelTimer(&pc->timer); /* T310 */
 340         if (!findie(skb->data, skb->len, WE6_date, 6)) {
 341                 l3_1tr6_error(pc, "missing connect date", skb);
 342                 return;
 343         }
 344         newl3state(pc, 10);
 345         dev_kfree_skb(skb);
 346         pc->para.chargeinfo = 0;
 347         pc->st->l3.l3l4(pc->st, CC_SETUP | CONFIRM, pc);
 348 }
 349
 350 static void
 351 l3_1tr6_rel(struct l3_process *pc, u_char pr, void *arg)
 352 {
 353         struct sk_buff *skb = arg;
 354         u_char *p;
 355
 356         p = skb->data;
 357         if ((p = findie(p, skb->len, WE0_cause, 0))) {
 358                 if (p[1] > 0) {
 359                         pc->para.cause = p[2];
 360                         if (p[1] > 1)
 361                                 pc->para.loc = p[3];
 362                         else
 363                                 pc->para.loc = 0;
 364                 } else {
 365                         pc->para.cause = 0;
 366                         pc->para.loc = 0;
 367                 }
 368         } else {
 369                 pc->para.cause = NO_CAUSE;
 370                 l3_1tr6_error(pc, "missing REL cause", skb);
 371                 return;
 372         }
 373         dev_kfree_skb(skb);
 374         StopAllL3Timer(pc);
 375         newl3state(pc, 0);
 376         l3_1TR6_message(pc, MT_N1_REL_ACK, PROTO_DIS_N1);
 377         pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
 378         release_l3_process(pc);
 379 }
 380
 381 static void
 382 l3_1tr6_rel_ack(struct l3_process *pc, u_char pr, void *arg)
 383 {
 384         struct sk_buff *skb = arg;
 385
 386         dev_kfree_skb(skb);
 387         StopAllL3Timer(pc);
 388         newl3state(pc, 0);
 389         pc->para.cause = NO_CAUSE;
 390         pc->st->l3.l3l4(pc->st, CC_RELEASE | CONFIRM, pc);
 391         release_l3_process(pc);
 392 }
 393
 394 static void
 395 l3_1tr6_disc(struct l3_process *pc, u_char pr, void *arg)
 396 {
 397         struct sk_buff *skb = arg;
 398         u_char *p;
 399         int i, tmpcharge = 0;
 400         char a_charge[8];
 401
 402         StopAllL3Timer(pc);
 403         p = skb->data;
 404         if ((p = findie(p, skb->len, WE6_chargingInfo, 6))) {
 405                 iecpy(a_charge, p, 1);
 406                 for (i = 0; i < strlen(a_charge); i++) {
 407                         tmpcharge *= 10;
 408                         tmpcharge += a_charge[i] & 0xf;
 409                 }
 410                 if (tmpcharge > pc->para.chargeinfo) {
 411                         pc->para.chargeinfo = tmpcharge;
 412                         pc->st->l3.l3l4(pc->st, CC_CHARGE | INDICATION, pc);
 413                 }
 414                 if (pc->st->l3.debug & L3_DEB_CHARGE) {
 415                         l3_debug(pc->st, "charging info %d",
 416                                  pc->para.chargeinfo);
 417                 }
 418         } else if (pc->st->l3.debug & L3_DEB_CHARGE)
 419                 l3_debug(pc->st, "charging info not found");
 420
 421
 422         p = skb->data;
 423         if ((p = findie(p, skb->len, WE0_cause, 0))) {
 424                 if (p[1] > 0) {
 425                         pc->para.cause = p[2];
 426                         if (p[1] > 1)
 427                                 pc->para.loc = p[3];
 428                         else
 429                                 pc->para.loc = 0;
 430                 } else {
 431                         pc->para.cause = 0;
 432                         pc->para.loc = 0;
 433                 }
 434         } else {
 435                 if (pc->st->l3.debug & L3_DEB_WARN)
 436                         l3_debug(pc->st, "cause not found");
 437                 pc->para.cause = NO_CAUSE;
 438         }
 439         if (!findie(skb->data, skb->len, WE6_date, 6)) {
 440                 l3_1tr6_error(pc, "missing connack date", skb);
 441                 return;
 442         }
 443         dev_kfree_skb(skb);
 444         newl3state(pc, 12);
 445         pc->st->l3.l3l4(pc->st, CC_DISCONNECT | INDICATION, pc);
 446 }
 447
 448
 449 static void
 450 l3_1tr6_connect_ack(struct l3_process *pc, u_char pr, void *arg)
 451 {
 452         struct sk_buff *skb = arg;
 453
 454         if (!findie(skb->data, skb->len, WE6_date, 6)) {
 455                 l3_1tr6_error(pc, "missing connack date", skb);
 456                 return;
 457         }
 458         dev_kfree_skb(skb);
 459         newl3state(pc, 10);
 460         pc->para.chargeinfo = 0;
 461         L3DelTimer(&pc->timer);
 462         pc->st->l3.l3l4(pc->st, CC_SETUP_COMPL | INDICATION, pc);
 463 }
 464
 465 static void
 466 l3_1tr6_alert_req(struct l3_process *pc, u_char pr, void *arg)
 467 {
 468         newl3state(pc, 7);
 469         l3_1TR6_message(pc, MT_N1_ALERT, PROTO_DIS_N1);
 470 }
 471
 472 static void
 473 l3_1tr6_setup_rsp(struct l3_process *pc, u_char pr, void *arg)
 474 {
 475         struct sk_buff *skb;
 476         u_char tmp[24];
 477         u_char *p = tmp;
 478         int l;
 479
 480         MsgHead(p, pc->callref, MT_N1_CONN, PROTO_DIS_N1);
 481         if (pc->para.spv) {     /* SPV ? */
 482                 /* NSF SPV */
 483                 *p++ = WE0_netSpecFac;
 484                 *p++ = 4;       /* Laenge */
 485                 *p++ = 0;
 486                 *p++ = FAC_SPV; /* SPV */
 487                 *p++ = pc->para.setup.si1;
 488                 *p++ = pc->para.setup.si2;
 489                 *p++ = WE0_netSpecFac;
 490                 *p++ = 4;       /* Laenge */
 491                 *p++ = 0;
 492                 *p++ = FAC_Activate;    /* aktiviere SPV */
 493                 *p++ = pc->para.setup.si1;
 494                 *p++ = pc->para.setup.si2;
 495         }
 496         newl3state(pc, 8);
 497         l = p - tmp;
 498         if (!(skb = l3_alloc_skb(l)))
 499                 return;
 500         memcpy(skb_put(skb, l), tmp, l);
 501         l3_msg(pc->st, DL_DATA | REQUEST, skb);
 502         L3DelTimer(&pc->timer);
 503         L3AddTimer(&pc->timer, T313, CC_T313);
 504 }
 505
 506 static void
 507 l3_1tr6_reset(struct l3_process *pc, u_char pr, void *arg)
 508 {
 509         release_l3_process(pc);
 510 }
 511
 512 static void
 513 l3_1tr6_disconnect_req(struct l3_process *pc, u_char pr, void *arg)
 514 {
 515         struct sk_buff *skb;
 516         u_char tmp[16];
 517         u_char *p = tmp;
 518         int l;
 519         u_char cause = 0x10;
 520         u_char clen = 1;
 521
 522         if (pc->para.cause > 0)
 523                 cause = pc->para.cause;
 524         /* Map DSS1 causes */
 525         switch (cause & 0x7f) {
 526         case 0x10:
 527                 clen = 0;
 528                 break;
 529         case 0x11:
 530                 cause = CAUSE_UserBusy;
 531                 break;
 532         case 0x15:
 533                 cause = CAUSE_CallRejected;
 534                 break;
 535         }
 536         StopAllL3Timer(pc);
 537         MsgHead(p, pc->callref, MT_N1_DISC, PROTO_DIS_N1);
 538         *p++ = WE0_cause;
 539         *p++ = clen;            /* Laenge */
 540         if (clen)
 541                 *p++ = cause | 0x80;
 542         newl3state(pc, 11);
 543         l = p - tmp;
 544         if (!(skb = l3_alloc_skb(l)))
 545                 return;
 546         memcpy(skb_put(skb, l), tmp, l);
 547         l3_msg(pc->st, DL_DATA | REQUEST, skb);
 548         L3AddTimer(&pc->timer, T305, CC_T305);
 549 }
 550
 551 static void
 552 l3_1tr6_t303(struct l3_process *pc, u_char pr, void *arg)
 553 {
 554         if (pc->N303 > 0) {
 555                 pc->N303--;
 556                 L3DelTimer(&pc->timer);
 557                 l3_1tr6_setup_req(pc, pr, arg);
 558         } else {
 559                 L3DelTimer(&pc->timer);
 560                 pc->para.cause = 0;
 561                 l3_1tr6_disconnect_req(pc, 0, NULL);
 562         }
 563 }
 564
 565 static void
 566 l3_1tr6_t304(struct l3_process *pc, u_char pr, void *arg)
 567 {
 568         L3DelTimer(&pc->timer);
 569         pc->para.cause = 0xE6;
 570         l3_1tr6_disconnect_req(pc, pr, NULL);
 571         pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
 572 }
 573
 574 static void
 575 l3_1tr6_t305(struct l3_process *pc, u_char pr, void *arg)
 576 {
 577         struct sk_buff *skb;
 578         u_char tmp[16];
 579         u_char *p = tmp;
 580         int l;
 581         u_char cause = 0x90;
 582         u_char clen = 1;
 583
 584         L3DelTimer(&pc->timer);
 585         if (pc->para.cause != NO_CAUSE)
 586                 cause = pc->para.cause;
 587         /* Map DSS1 causes */
 588         switch (cause & 0x7f) {
 589         case 0x10:
 590                 clen = 0;
 591                 break;
 592         case 0x15:
 593                 cause = CAUSE_CallRejected;
 594                 break;
 595         }
 596         MsgHead(p, pc->callref, MT_N1_REL, PROTO_DIS_N1);
 597         *p++ = WE0_cause;
 598         *p++ = clen;            /* Laenge */
 599         if (clen)
 600                 *p++ = cause;
 601         newl3state(pc, 19);
 602         l = p - tmp;
 603         if (!(skb = l3_alloc_skb(l)))
 604                 return;
 605         memcpy(skb_put(skb, l), tmp, l);
 606         l3_msg(pc->st, DL_DATA | REQUEST, skb);
 607         L3AddTimer(&pc->timer, T308, CC_T308_1);
 608 }
 609
 610 static void
 611 l3_1tr6_t310(struct l3_process *pc, u_char pr, void *arg)
 612 {
 613         L3DelTimer(&pc->timer);
 614         pc->para.cause = 0xE6;
 615         l3_1tr6_disconnect_req(pc, pr, NULL);
 616         pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
 617 }
 618
 619 static void
 620 l3_1tr6_t313(struct l3_process *pc, u_char pr, void *arg)
 621 {
 622         L3DelTimer(&pc->timer);
 623         pc->para.cause = 0xE6;
 624         l3_1tr6_disconnect_req(pc, pr, NULL);
 625         pc->st->l3.l3l4(pc->st, CC_CONNECT_ERR, pc);
 626 }
 627
 628 static void
 629 l3_1tr6_t308_1(struct l3_process *pc, u_char pr, void *arg)
 630 {
 631         L3DelTimer(&pc->timer);
 632         l3_1TR6_message(pc, MT_N1_REL, PROTO_DIS_N1);
 633         L3AddTimer(&pc->timer, T308, CC_T308_2);
 634         newl3state(pc, 19);
 635 }
 636
 637 static void
 638 l3_1tr6_t308_2(struct l3_process *pc, u_char pr, void *arg)
 639 {
 640         L3DelTimer(&pc->timer);
 641         pc->st->l3.l3l4(pc->st, CC_RELEASE_ERR, pc);
 642         release_l3_process(pc);
 643 }
 644
 645 static void
 646 l3_1tr6_dl_reset(struct l3_process *pc, u_char pr, void *arg)
 647 {
 648         pc->para.cause = CAUSE_LocalProcErr;
 649         l3_1tr6_disconnect_req(pc, pr, NULL);
 650         pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
 651 }
 652
 653 static void
 654 l3_1tr6_dl_release(struct l3_process *pc, u_char pr, void *arg)
 655 {
 656         newl3state(pc, 0);
 657         pc->para.cause = 0x1b;          /* Destination out of order */
 658         pc->para.loc = 0;
 659         pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
 660         release_l3_process(pc);
 661 }
 662
 663 /* *INDENT-OFF* */
 664 static struct stateentry downstl[] =
 665 {
 666         {SBIT(0),
 667          CC_SETUP | REQUEST, l3_1tr6_setup_req},
 668         {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(6) | SBIT(7) | SBIT(8) |
 669          SBIT(10),
 670          CC_DISCONNECT | REQUEST, l3_1tr6_disconnect_req},
 671         {SBIT(12),
 672          CC_RELEASE | REQUEST, l3_1tr6_release_req},
 673         {SBIT(6),
 674          CC_IGNORE | REQUEST, l3_1tr6_reset},
 675         {SBIT(6),
 676          CC_REJECT | REQUEST, l3_1tr6_disconnect_req},
 677         {SBIT(6),
 678          CC_ALERTING | REQUEST, l3_1tr6_alert_req},
 679         {SBIT(6) | SBIT(7),
 680          CC_SETUP | RESPONSE, l3_1tr6_setup_rsp},
 681         {SBIT(1),
 682          CC_T303, l3_1tr6_t303},
 683         {SBIT(2),
 684          CC_T304, l3_1tr6_t304},
 685         {SBIT(3),
 686          CC_T310, l3_1tr6_t310},
 687         {SBIT(8),
 688          CC_T313, l3_1tr6_t313},
 689         {SBIT(11),
 690          CC_T305, l3_1tr6_t305},
 691         {SBIT(19),
 692          CC_T308_1, l3_1tr6_t308_1},
 693         {SBIT(19),
 694          CC_T308_2, l3_1tr6_t308_2},
 695 };
 696
 697 static struct stateentry datastln1[] =
 698 {
 699         {SBIT(0),
 700          MT_N1_INVALID, l3_1tr6_invalid},
 701         {SBIT(0),
 702          MT_N1_SETUP, l3_1tr6_setup},
 703         {SBIT(1),
 704          MT_N1_SETUP_ACK, l3_1tr6_setup_ack},
 705         {SBIT(1) | SBIT(2),
 706          MT_N1_CALL_SENT, l3_1tr6_call_sent},
 707         {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(10),
 708          MT_N1_DISC, l3_1tr6_disc},
 709         {SBIT(2) | SBIT(3) | SBIT(4),
 710          MT_N1_ALERT, l3_1tr6_alert},
 711         {SBIT(2) | SBIT(3) | SBIT(4),
 712          MT_N1_CONN, l3_1tr6_connect},
 713         {SBIT(2),
 714          MT_N1_INFO, l3_1tr6_info_s2},
 715         {SBIT(8),
 716          MT_N1_CONN_ACK, l3_1tr6_connect_ack},
 717         {SBIT(10),
 718          MT_N1_INFO, l3_1tr6_info},
 719         {SBIT(0) | SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) |
 720          SBIT(10) | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17),
 721          MT_N1_REL, l3_1tr6_rel},
 722         {SBIT(19),
 723          MT_N1_REL, l3_1tr6_rel_ack},
 724         {SBIT(0) | SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) |
 725          SBIT(10) | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17),
 726          MT_N1_REL_ACK, l3_1tr6_invalid},
 727         {SBIT(19),
 728          MT_N1_REL_ACK, l3_1tr6_rel_ack}
 729 };
 730
 731 static struct stateentry manstatelist[] =
 732 {
 733         {SBIT(2),
 734          DL_ESTABLISH | INDICATION, l3_1tr6_dl_reset},
 735         {ALL_STATES,
 736          DL_RELEASE | INDICATION, l3_1tr6_dl_release},
 737 };
 738
 739 /* *INDENT-ON* */
 740
 741 static void
 742 up1tr6(struct PStack *st, int pr, void *arg)
 743 {
 744         int i, mt, cr;
 745         struct l3_process *proc;
 746         struct sk_buff *skb = arg;
 747
 748         switch (pr) {
 749         case (DL_DATA | INDICATION):
 750         case (DL_UNIT_DATA | INDICATION):
 751                 break;
 752         case (DL_ESTABLISH | CONFIRM):
 753         case (DL_ESTABLISH | INDICATION):
 754         case (DL_RELEASE | INDICATION):
 755         case (DL_RELEASE | CONFIRM):
 756                 l3_msg(st, pr, arg);
 757                 return;
 758                 break;
 759         }
 760         if (skb->len < 4) {
 761                 if (st->l3.debug & L3_DEB_PROTERR) {
 762                         l3_debug(st, "up1tr6 len only %d", skb->len);
 763                 }
 764                 dev_kfree_skb(skb);
 765                 return;
 766         }
 767         if ((skb->data[0] & 0xfe) != PROTO_DIS_N0) {
 768                 if (st->l3.debug & L3_DEB_PROTERR) {
 769                         l3_debug(st, "up1tr6%sunexpected discriminator %x message len %d",
 770                                 (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
 771                                 skb->data[0], skb->len);
 772                 }
 773                 dev_kfree_skb(skb);
 774                 return;
 775         }
 776         if (skb->data[1] != 1) {
 777                 if (st->l3.debug & L3_DEB_PROTERR) {
 778                         l3_debug(st, "up1tr6 CR len not 1");
 779                 }
 780                 dev_kfree_skb(skb);
 781                 return;
 782         }
 783         cr = skb->data[2];
 784         mt = skb->data[3];
 785         if (skb->data[0] == PROTO_DIS_N0) {
 786                 dev_kfree_skb(skb);
 787                 if (st->l3.debug & L3_DEB_STATE) {
 788                         l3_debug(st, "up1tr6%s N0 mt %x unhandled",
 789                                 (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", mt);
 790                 }
 791         } else if (skb->data[0] == PROTO_DIS_N1) {
 792                 if (!(proc = getl3proc(st, cr))) {
 793                         if (mt == MT_N1_SETUP) {
 794                                 if (cr < 128) {
 795                                         if (!(proc = new_l3_process(st, cr))) {
 796                                                 if (st->l3.debug & L3_DEB_PROTERR) {
 797                                                         l3_debug(st, "up1tr6 no roc mem");
 798                                                 }
 799                                                 dev_kfree_skb(skb);
 800                                                 return;
 801                                         }
 802                                 } else {
 803                                         dev_kfree_skb(skb);
 804                                         return;
 805                                 }
 806                         } else if ((mt == MT_N1_REL) || (mt == MT_N1_REL_ACK) ||
 807                                    (mt == MT_N1_CANC_ACK) || (mt == MT_N1_CANC_REJ) ||
 808                                    (mt == MT_N1_REG_ACK) || (mt == MT_N1_REG_REJ) ||
 809                                    (mt == MT_N1_SUSP_ACK) || (mt == MT_N1_RES_REJ) ||
 810                                    (mt == MT_N1_INFO)) {
 811                                 dev_kfree_skb(skb);
 812                                 return;
 813                         } else {
 814                                 if (!(proc = new_l3_process(st, cr))) {
 815                                         if (st->l3.debug & L3_DEB_PROTERR) {
 816                                                 l3_debug(st, "up1tr6 no roc mem");
 817                                         }
 818                                         dev_kfree_skb(skb);
 819                                         return;
 820                                 }
 821                                 mt = MT_N1_INVALID;
 822                         }
 823                 }
 824                 for (i = 0; i < ARRAY_SIZE(datastln1); i++)
 825                         if ((mt == datastln1[i].primitive) &&
 826                             ((1 << proc->state) & datastln1[i].state))
 827                                 break;
 828                 if (i == ARRAY_SIZE(datastln1)) {
 829                         dev_kfree_skb(skb);
 830                         if (st->l3.debug & L3_DEB_STATE) {
 831                                 l3_debug(st, "up1tr6%sstate %d mt %x unhandled",
 832                                         (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
 833                                         proc->state, mt);
 834                         }
 835                         return;
 836                 } else {
 837                         if (st->l3.debug & L3_DEB_STATE) {
 838                                 l3_debug(st, "up1tr6%sstate %d mt %x",
 839                                         (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
 840                                         proc->state, mt);
 841                         }
 842                         datastln1[i].rout(proc, pr, skb);
 843                 }
 844         }
 845 }
 846
 847 static void
 848 down1tr6(struct PStack *st, int pr, void *arg)
 849 {
 850         int i, cr;
 851         struct l3_process *proc;
 852         struct Channel *chan;
 853
 854         if ((DL_ESTABLISH | REQUEST) == pr) {
 855                 l3_msg(st, pr, NULL);
 856                 return;
 857         } else if ((CC_SETUP | REQUEST) == pr) {
 858                 chan = arg;
 859                 cr = newcallref();
 860                 cr |= 0x80;
 861                 if (!(proc = new_l3_process(st, cr))) {
 862                         return;
 863                 } else {
 864                         proc->chan = chan;
 865                         chan->proc = proc;
 866                         memcpy(&proc->para.setup, &chan->setup, sizeof(setup_parm));
 867                         proc->callref = cr;
 868                 }
 869         } else {
 870                 proc = arg;
 871         }
 872
 873         for (i = 0; i < ARRAY_SIZE(downstl); i++)
 874                 if ((pr == downstl[i].primitive) &&
 875                     ((1 << proc->state) & downstl[i].state))
 876                         break;
 877         if (i == ARRAY_SIZE(downstl)) {
 878                 if (st->l3.debug & L3_DEB_STATE) {
 879                         l3_debug(st, "down1tr6 state %d prim %d unhandled",
 880                                 proc->state, pr);
 881                 }
 882         } else {
 883                 if (st->l3.debug & L3_DEB_STATE) {
 884                         l3_debug(st, "down1tr6 state %d prim %d",
 885                                 proc->state, pr);
 886                 }
 887                 downstl[i].rout(proc, pr, arg);
 888         }
 889 }
 890
 891 static void
 892 man1tr6(struct PStack *st, int pr, void *arg)
 893 {
 894         int i;
 895         struct l3_process *proc = arg;
 896
 897         if (!proc) {
 898                 printk(KERN_ERR "HiSax man1tr6 without proc pr=%04x\n", pr);
 899                 return;
 900         }
 901         for (i = 0; i < ARRAY_SIZE(manstatelist); i++)
 902                 if ((pr == manstatelist[i].primitive) &&
 903                     ((1 << proc->state) & manstatelist[i].state))
 904                         break;
 905         if (i == ARRAY_SIZE(manstatelist)) {
 906                 if (st->l3.debug & L3_DEB_STATE) {
 907                         l3_debug(st, "cr %d man1tr6 state %d prim %d unhandled",
 908                                  proc->callref & 0x7f, proc->state, pr);
 909                 }
 910         } else {
 911                 if (st->l3.debug & L3_DEB_STATE) {
 912                         l3_debug(st, "cr %d man1tr6 state %d prim %d",
 913                                  proc->callref & 0x7f, proc->state, pr);
 914                 }
 915                 manstatelist[i].rout(proc, pr, arg);
 916         }
 917 }
 918
 919 void
 920 setstack_1tr6(struct PStack *st)
 921 {
 922         char tmp[64];
 923
 924         st->lli.l4l3 = down1tr6;
 925         st->l2.l2l3 = up1tr6;
 926         st->l3.l3ml3 = man1tr6;
 927         st->l3.N303 = 0;
 928
 929         strcpy(tmp, l3_1tr6_revision);
 930         printk(KERN_INFO "HiSax: 1TR6 Rev. %s\n", HiSax_getrev(tmp));
 931 }