1/* $Id: callc.c,v 2.59.2.4 2004/02/11 13:21:32 Exp $ 2 * 3 * Author Karsten Keil 4 * Copyright by Karsten Keil <keil@isdn4linux.de> 5 * 6 * This software may be used and distributed according to the terms 7 * of the GNU General Public License, incorporated herein by reference. 8 * 9 * For changes and modifications please read 10 * Documentation/isdn/HiSax.cert 11 * 12 * based on the teles driver from Jan den Ouden 13 * 14 * Thanks to Jan den Ouden 15 * Fritz Elfert 16 * 17 */ 18 19#include <linux/module.h> 20#include <linux/slab.h> 21#include <linux/init.h> 22#include "hisax.h" 23#include <linux/isdn/capicmd.h> 24 25const char *lli_revision = "$Revision: 2.59.2.4 $"; 26 27extern struct IsdnCard cards[]; 28 29static int init_b_st(struct Channel *chanp, int incoming); 30static void release_b_st(struct Channel *chanp); 31 32static struct Fsm callcfsm; 33static int chancount; 34 35/* experimental REJECT after ALERTING for CALLBACK to beat the 4s delay */ 36#define ALERT_REJECT 0 37 38/* Value to delay the sending of the first B-channel paket after CONNECT 39 * here is no value given by ITU, but experience shows that 300 ms will 40 * work on many networks, if you or your other side is behind local exchanges 41 * a greater value may be recommented. If the delay is to short the first paket 42 * will be lost and autodetect on many comercial routers goes wrong ! 43 * You can adjust this value on runtime with 44 * hisaxctrl <id> 2 <value> 45 * value is in milliseconds 46 */ 47#define DEFAULT_B_DELAY 300 48 49/* Flags for remembering action done in lli */ 50 51#define FLG_START_B 0 52 53/* 54 * Find card with given driverId 55 */ 56static inline struct IsdnCardState * 57hisax_findcard(int driverid) 58{ 59 int i; 60 61 for (i = 0; i < nrcards; i++) 62 if (cards[i].cs) 63 if (cards[i].cs->myid == driverid) 64 return (cards[i].cs); 65 return (struct IsdnCardState *) 0; 66} 67 68static void 69link_debug(struct Channel *chanp, int direction, char *fmt, ...) 70{ 71 va_list args; 72 char tmp[16]; 73 74 va_start(args, fmt); 75 sprintf(tmp, "Ch%d %s ", chanp->chan, 76 direction ? "LL->HL" : "HL->LL"); 77 VHiSax_putstatus(chanp->cs, tmp, fmt, args); 78 va_end(args); 79} 80 81enum { 82 ST_NULL, /* 0 inactive */ 83 ST_OUT_DIAL, /* 1 outgoing, SETUP send; awaiting confirm */ 84 ST_IN_WAIT_LL, /* 2 incoming call received; wait for LL confirm */ 85 ST_IN_ALERT_SENT, /* 3 incoming call received; ALERT send */ 86 ST_IN_WAIT_CONN_ACK, /* 4 incoming CONNECT send; awaiting CONN_ACK */ 87 ST_WAIT_BCONN, /* 5 CONNECT/CONN_ACK received, awaiting b-channel prot. estbl. */ 88 ST_ACTIVE, /* 6 active, b channel prot. established */ 89 ST_WAIT_BRELEASE, /* 7 call clear. (initiator), awaiting b channel prot. rel. */ 90 ST_WAIT_BREL_DISC, /* 8 call clear. (receiver), DISCONNECT req. received */ 91 ST_WAIT_DCOMMAND, /* 9 call clear. (receiver), awaiting DCHANNEL message */ 92 ST_WAIT_DRELEASE, /* 10 DISCONNECT sent, awaiting RELEASE */ 93 ST_WAIT_D_REL_CNF, /* 11 RELEASE sent, awaiting RELEASE confirm */ 94 ST_IN_PROCEED_SEND, /* 12 incoming call, proceeding send */ 95}; 96 97 98#define STATE_COUNT (ST_IN_PROCEED_SEND + 1) 99 100static char *strState[] = 101{ 102 "ST_NULL", 103 "ST_OUT_DIAL", 104 "ST_IN_WAIT_LL", 105 "ST_IN_ALERT_SENT", 106 "ST_IN_WAIT_CONN_ACK", 107 "ST_WAIT_BCONN", 108 "ST_ACTIVE", 109 "ST_WAIT_BRELEASE", 110 "ST_WAIT_BREL_DISC", 111 "ST_WAIT_DCOMMAND", 112 "ST_WAIT_DRELEASE", 113 "ST_WAIT_D_REL_CNF", 114 "ST_IN_PROCEED_SEND", 115}; 116 117enum { 118 EV_DIAL, /* 0 */ 119 EV_SETUP_CNF, /* 1 */ 120 EV_ACCEPTB, /* 2 */ 121 EV_DISCONNECT_IND, /* 3 */ 122 EV_RELEASE, /* 4 */ 123 EV_LEASED, /* 5 */ 124 EV_LEASED_REL, /* 6 */ 125 EV_SETUP_IND, /* 7 */ 126 EV_ACCEPTD, /* 8 */ 127 EV_SETUP_CMPL_IND, /* 9 */ 128 EV_BC_EST, /* 10 */ 129 EV_WRITEBUF, /* 11 */ 130 EV_HANGUP, /* 12 */ 131 EV_BC_REL, /* 13 */ 132 EV_CINF, /* 14 */ 133 EV_SUSPEND, /* 15 */ 134 EV_RESUME, /* 16 */ 135 EV_NOSETUP_RSP, /* 17 */ 136 EV_SETUP_ERR, /* 18 */ 137 EV_CONNECT_ERR, /* 19 */ 138 EV_PROCEED, /* 20 */ 139 EV_ALERT, /* 21 */ 140 EV_REDIR, /* 22 */ 141}; 142 143#define EVENT_COUNT (EV_REDIR + 1) 144 145static char *strEvent[] = 146{ 147 "EV_DIAL", 148 "EV_SETUP_CNF", 149 "EV_ACCEPTB", 150 "EV_DISCONNECT_IND", 151 "EV_RELEASE", 152 "EV_LEASED", 153 "EV_LEASED_REL", 154 "EV_SETUP_IND", 155 "EV_ACCEPTD", 156 "EV_SETUP_CMPL_IND", 157 "EV_BC_EST", 158 "EV_WRITEBUF", 159 "EV_HANGUP", 160 "EV_BC_REL", 161 "EV_CINF", 162 "EV_SUSPEND", 163 "EV_RESUME", 164 "EV_NOSETUP_RSP", 165 "EV_SETUP_ERR", 166 "EV_CONNECT_ERR", 167 "EV_PROCEED", 168 "EV_ALERT", 169 "EV_REDIR", 170}; 171 172 173static inline void 174HL_LL(struct Channel *chanp, int command) 175{ 176 isdn_ctrl ic; 177 178 ic.driver = chanp->cs->myid; 179 ic.command = command; 180 ic.arg = chanp->chan; 181 chanp->cs->iif.statcallb(&ic); 182} 183 184static inline void 185lli_deliver_cause(struct Channel *chanp) 186{ 187 isdn_ctrl ic; 188 189 if (!chanp->proc) 190 return; 191 if (chanp->proc->para.cause == NO_CAUSE) 192 return; 193 ic.driver = chanp->cs->myid; 194 ic.command = ISDN_STAT_CAUSE; 195 ic.arg = chanp->chan; 196 if (chanp->cs->protocol == ISDN_PTYPE_EURO) 197 sprintf(ic.parm.num, "E%02X%02X", chanp->proc->para.loc & 0x7f, 198 chanp->proc->para.cause & 0x7f); 199 else 200 sprintf(ic.parm.num, "%02X%02X", chanp->proc->para.loc & 0x7f, 201 chanp->proc->para.cause & 0x7f); 202 chanp->cs->iif.statcallb(&ic); 203} 204 205static inline void 206lli_close(struct FsmInst *fi) 207{ 208 struct Channel *chanp = fi->userdata; 209 210 FsmChangeState(fi, ST_NULL); 211 chanp->Flags = 0; 212 chanp->cs->cardmsg(chanp->cs, MDL_INFO_REL, (void *) (long)chanp->chan); 213} 214 215static void 216lli_leased_in(struct FsmInst *fi, int event, void *arg) 217{ 218 struct Channel *chanp = fi->userdata; 219 isdn_ctrl ic; 220 int ret; 221 222 if (!chanp->leased) 223 return; 224 chanp->cs->cardmsg(chanp->cs, MDL_INFO_SETUP, (void *) (long)chanp->chan); 225 FsmChangeState(fi, ST_IN_WAIT_LL); 226 if (chanp->debug & 1) 227 link_debug(chanp, 0, "STAT_ICALL_LEASED"); 228 ic.driver = chanp->cs->myid; 229 ic.command = ((chanp->chan < 2) ? ISDN_STAT_ICALL : ISDN_STAT_ICALLW); 230 ic.arg = chanp->chan; 231 ic.parm.setup.si1 = 7; 232 ic.parm.setup.si2 = 0; 233 ic.parm.setup.plan = 0; 234 ic.parm.setup.screen = 0; 235 sprintf(ic.parm.setup.eazmsn,"%d", chanp->chan + 1); 236 sprintf(ic.parm.setup.phone,"LEASED%d", chanp->cs->myid); 237 ret = chanp->cs->iif.statcallb(&ic); 238 if (chanp->debug & 1) 239 link_debug(chanp, 1, "statcallb ret=%d", ret); 240 if (!ret) { 241 chanp->cs->cardmsg(chanp->cs, MDL_INFO_REL, (void *) (long)chanp->chan); 242 FsmChangeState(fi, ST_NULL); 243 } 244} 245 246 247/* 248 * Dial out 249 */ 250static void 251lli_init_bchan_out(struct FsmInst *fi, int event, void *arg) 252{ 253 struct Channel *chanp = fi->userdata; 254 255 FsmChangeState(fi, ST_WAIT_BCONN); 256 if (chanp->debug & 1) 257 link_debug(chanp, 0, "STAT_DCONN"); 258 HL_LL(chanp, ISDN_STAT_DCONN); 259 init_b_st(chanp, 0); 260 chanp->b_st->lli.l4l3(chanp->b_st, DL_ESTABLISH | REQUEST, NULL); 261} 262 263static void 264lli_prep_dialout(struct FsmInst *fi, int event, void *arg) 265{ 266 struct Channel *chanp = fi->userdata; 267 268 FsmDelTimer(&chanp->drel_timer, 60); 269 FsmDelTimer(&chanp->dial_timer, 73); 270 chanp->l2_active_protocol = chanp->l2_protocol; 271 chanp->incoming = 0; 272 chanp->cs->cardmsg(chanp->cs, MDL_INFO_SETUP, (void *) (long)chanp->chan); 273 if (chanp->leased) { 274 lli_init_bchan_out(fi, event, arg); 275 } else { 276 FsmChangeState(fi, ST_OUT_DIAL); 277 chanp->d_st->lli.l4l3(chanp->d_st, CC_SETUP | REQUEST, chanp); 278 } 279} 280 281static void 282lli_resume(struct FsmInst *fi, int event, void *arg) 283{ 284 struct Channel *chanp = fi->userdata; 285 286 FsmDelTimer(&chanp->drel_timer, 60); 287 FsmDelTimer(&chanp->dial_timer, 73); 288 chanp->l2_active_protocol = chanp->l2_protocol; 289 chanp->incoming = 0; 290 chanp->cs->cardmsg(chanp->cs, MDL_INFO_SETUP, (void *) (long)chanp->chan); 291 if (chanp->leased) { 292 lli_init_bchan_out(fi, event, arg); 293 } else { 294 FsmChangeState(fi, ST_OUT_DIAL); 295 chanp->d_st->lli.l4l3(chanp->d_st, CC_RESUME | REQUEST, chanp); 296 } 297} 298 299static void 300lli_go_active(struct FsmInst *fi, int event, void *arg) 301{ 302 struct Channel *chanp = fi->userdata; 303 isdn_ctrl ic; 304 305 306 FsmChangeState(fi, ST_ACTIVE); 307 chanp->data_open = !0; 308 if (chanp->bcs->conmsg) 309 strcpy(ic.parm.num, chanp->bcs->conmsg); 310 else 311 ic.parm.num[0] = 0; 312 if (chanp->debug & 1) 313 link_debug(chanp, 0, "STAT_BCONN %s", ic.parm.num); 314 ic.driver = chanp->cs->myid; 315 ic.command = ISDN_STAT_BCONN; 316 ic.arg = chanp->chan; 317 chanp->cs->iif.statcallb(&ic); 318 chanp->cs->cardmsg(chanp->cs, MDL_INFO_CONN, (void *) (long)chanp->chan); 319} 320 321 322/* 323 * RESUME 324 */ 325 326/* incoming call */ 327 328static void 329lli_deliver_call(struct FsmInst *fi, int event, void *arg) 330{ 331 struct Channel *chanp = fi->userdata; 332 isdn_ctrl ic; 333 int ret; 334 335 chanp->cs->cardmsg(chanp->cs, MDL_INFO_SETUP, (void *) (long)chanp->chan); 336 /* 337 * Report incoming calls only once to linklevel, use CallFlags 338 * which is set to 3 with each broadcast message in isdnl1.c 339 * and resetted if a interface answered the STAT_ICALL. 340 */ 341 if (1) { /* for only one TEI */ 342 FsmChangeState(fi, ST_IN_WAIT_LL); 343 if (chanp->debug & 1) 344 link_debug(chanp, 0, (chanp->chan < 2) ? "STAT_ICALL" : "STAT_ICALLW"); 345 ic.driver = chanp->cs->myid; 346 ic.command = ((chanp->chan < 2) ? ISDN_STAT_ICALL : ISDN_STAT_ICALLW); 347 348 ic.arg = chanp->chan; 349 /* 350 * No need to return "unknown" for calls without OAD, 351 * cause that's handled in linklevel now (replaced by '0') 352 */ 353 memcpy(&ic.parm.setup, &chanp->proc->para.setup, sizeof(setup_parm)); 354 ret = chanp->cs->iif.statcallb(&ic); 355 if (chanp->debug & 1) 356 link_debug(chanp, 1, "statcallb ret=%d", ret); 357 358 switch (ret) { 359 case 1: /* OK, someone likes this call */ 360 FsmDelTimer(&chanp->drel_timer, 61); 361 FsmChangeState(fi, ST_IN_ALERT_SENT); 362 chanp->d_st->lli.l4l3(chanp->d_st, CC_ALERTING | REQUEST, chanp->proc); 363 break; 364 case 5: /* direct redirect */ 365 case 4: /* Proceeding desired */ 366 FsmDelTimer(&chanp->drel_timer, 61); 367 FsmChangeState(fi, ST_IN_PROCEED_SEND); 368 chanp->d_st->lli.l4l3(chanp->d_st, CC_PROCEED_SEND | REQUEST, chanp->proc); 369 if (ret == 5) { 370 memcpy(&chanp->setup, &ic.parm.setup, sizeof(setup_parm)); 371 chanp->d_st->lli.l4l3(chanp->d_st, CC_REDIR | REQUEST, chanp->proc); 372 } 373 break; 374 case 2: /* Rejecting Call */ 375 break; 376 case 3: /* incomplete number */ 377 FsmDelTimer(&chanp->drel_timer, 61); 378 chanp->d_st->lli.l4l3(chanp->d_st, CC_MORE_INFO | REQUEST, chanp->proc); 379 break; 380 case 0: /* OK, nobody likes this call */ 381 default: /* statcallb problems */ 382 chanp->d_st->lli.l4l3(chanp->d_st, CC_IGNORE | REQUEST, chanp->proc); 383 chanp->cs->cardmsg(chanp->cs, MDL_INFO_REL, (void *) (long)chanp->chan); 384 FsmChangeState(fi, ST_NULL); 385 break; 386 } 387 } else { 388 chanp->d_st->lli.l4l3(chanp->d_st, CC_IGNORE | REQUEST, chanp->proc); 389 chanp->cs->cardmsg(chanp->cs, MDL_INFO_REL, (void *) (long)chanp->chan); 390 } 391} 392 393static void 394lli_send_dconnect(struct FsmInst *fi, int event, void *arg) 395{ 396 struct Channel *chanp = fi->userdata; 397 398 FsmChangeState(fi, ST_IN_WAIT_CONN_ACK); 399 chanp->d_st->lli.l4l3(chanp->d_st, CC_SETUP | RESPONSE, chanp->proc); 400} 401 402static void 403lli_send_alert(struct FsmInst *fi, int event, void *arg) 404{ 405 struct Channel *chanp = fi->userdata; 406 407 FsmChangeState(fi, ST_IN_ALERT_SENT); 408 chanp->d_st->lli.l4l3(chanp->d_st, CC_ALERTING | REQUEST, chanp->proc); 409} 410 411static void 412lli_send_redir(struct FsmInst *fi, int event, void *arg) 413{ 414 struct Channel *chanp = fi->userdata; 415 416 chanp->d_st->lli.l4l3(chanp->d_st, CC_REDIR | REQUEST, chanp->proc); 417} 418 419static void 420lli_init_bchan_in(struct FsmInst *fi, int event, void *arg) 421{ 422 struct Channel *chanp = fi->userdata; 423 424 FsmChangeState(fi, ST_WAIT_BCONN); 425 if (chanp->debug & 1) 426 link_debug(chanp, 0, "STAT_DCONN"); 427 HL_LL(chanp, ISDN_STAT_DCONN); 428 chanp->l2_active_protocol = chanp->l2_protocol; 429 chanp->incoming = !0; 430 init_b_st(chanp, !0); 431 chanp->b_st->lli.l4l3(chanp->b_st, DL_ESTABLISH | REQUEST, NULL); 432} 433 434static void 435lli_setup_rsp(struct FsmInst *fi, int event, void *arg) 436{ 437 struct Channel *chanp = fi->userdata; 438 439 if (chanp->leased) { 440 lli_init_bchan_in(fi, event, arg); 441 } else { 442 FsmChangeState(fi, ST_IN_WAIT_CONN_ACK); 443#ifdef WANT_ALERT 444 chanp->d_st->lli.l4l3(chanp->d_st, CC_ALERTING | REQUEST, chanp->proc); 445#endif 446 chanp->d_st->lli.l4l3(chanp->d_st, CC_SETUP | RESPONSE, chanp->proc); 447 } 448} 449 450/* Call suspend */ 451 452static void 453lli_suspend(struct FsmInst *fi, int event, void *arg) 454{ 455 struct Channel *chanp = fi->userdata; 456 457 chanp->d_st->lli.l4l3(chanp->d_st, CC_SUSPEND | REQUEST, chanp->proc); 458} 459 460/* Call clearing */ 461 462static void 463lli_leased_hup(struct FsmInst *fi, struct Channel *chanp) 464{ 465 isdn_ctrl ic; 466 467 ic.driver = chanp->cs->myid; 468 ic.command = ISDN_STAT_CAUSE; 469 ic.arg = chanp->chan; 470 sprintf(ic.parm.num, "L0010"); 471 chanp->cs->iif.statcallb(&ic); 472 if (chanp->debug & 1) 473 link_debug(chanp, 0, "STAT_DHUP"); 474 HL_LL(chanp, ISDN_STAT_DHUP); 475 lli_close(fi); 476} 477 478static void 479lli_disconnect_req(struct FsmInst *fi, int event, void *arg) 480{ 481 struct Channel *chanp = fi->userdata; 482 483 if (chanp->leased) { 484 lli_leased_hup(fi, chanp); 485 } else { 486 FsmChangeState(fi, ST_WAIT_DRELEASE); 487 if (chanp->proc) 488 chanp->proc->para.cause = 0x10; /* Normal Call Clearing */ 489 chanp->d_st->lli.l4l3(chanp->d_st, CC_DISCONNECT | REQUEST, 490 chanp->proc); 491 } 492} 493 494static void 495lli_disconnect_reject(struct FsmInst *fi, int event, void *arg) 496{ 497 struct Channel *chanp = fi->userdata; 498 499 if (chanp->leased) { 500 lli_leased_hup(fi, chanp); 501 } else { 502 FsmChangeState(fi, ST_WAIT_DRELEASE); 503 if (chanp->proc) 504 chanp->proc->para.cause = 0x15; /* Call Rejected */ 505 chanp->d_st->lli.l4l3(chanp->d_st, CC_DISCONNECT | REQUEST, 506 chanp->proc); 507 } 508} 509 510static void 511lli_dhup_close(struct FsmInst *fi, int event, void *arg) 512{ 513 struct Channel *chanp = fi->userdata; 514 515 if (chanp->leased) { 516 lli_leased_hup(fi, chanp); 517 } else { 518 if (chanp->debug & 1) 519 link_debug(chanp, 0, "STAT_DHUP"); 520 lli_deliver_cause(chanp); 521 HL_LL(chanp, ISDN_STAT_DHUP); 522 lli_close(fi); 523 } 524} 525 526static void 527lli_reject_req(struct FsmInst *fi, int event, void *arg) 528{ 529 struct Channel *chanp = fi->userdata; 530 531 if (chanp->leased) { 532 lli_leased_hup(fi, chanp); 533 return; 534 } 535#ifndef ALERT_REJECT 536 if (chanp->proc) 537 chanp->proc->para.cause = 0x15; /* Call Rejected */ 538 chanp->d_st->lli.l4l3(chanp->d_st, CC_REJECT | REQUEST, chanp->proc); 539 lli_dhup_close(fi, event, arg); 540#else 541 FsmRestartTimer(&chanp->drel_timer, 40, EV_HANGUP, NULL, 63); 542 FsmChangeState(fi, ST_IN_ALERT_SENT); 543 chanp->d_st->lli.l4l3(chanp->d_st, CC_ALERTING | REQUEST, chanp->proc); 544#endif 545} 546 547static void 548lli_disconn_bchan(struct FsmInst *fi, int event, void *arg) 549{ 550 struct Channel *chanp = fi->userdata; 551 552 chanp->data_open = 0; 553 FsmChangeState(fi, ST_WAIT_BRELEASE); 554 chanp->b_st->lli.l4l3(chanp->b_st, DL_RELEASE | REQUEST, NULL); 555} 556 557static void 558lli_start_disc(struct FsmInst *fi, int event, void *arg) 559{ 560 struct Channel *chanp = fi->userdata; 561 562 if (chanp->leased) { 563 lli_leased_hup(fi, chanp); 564 } else { 565 lli_disconnect_req(fi, event, arg); 566 } 567} 568 569static void 570lli_rel_b_disc(struct FsmInst *fi, int event, void *arg) 571{ 572 struct Channel *chanp = fi->userdata; 573 574 release_b_st(chanp); 575 lli_start_disc(fi, event, arg); 576} 577 578static void 579lli_bhup_disc(struct FsmInst *fi, int event, void *arg) 580{ 581 struct Channel *chanp = fi->userdata; 582 583 if (chanp->debug & 1) 584 link_debug(chanp, 0, "STAT_BHUP"); 585 HL_LL(chanp, ISDN_STAT_BHUP); 586 lli_rel_b_disc(fi, event, arg); 587} 588 589static void 590lli_bhup_rel_b(struct FsmInst *fi, int event, void *arg) 591{ 592 struct Channel *chanp = fi->userdata; 593 594 FsmChangeState(fi, ST_WAIT_DCOMMAND); 595 chanp->data_open = 0; 596 if (chanp->debug & 1) 597 link_debug(chanp, 0, "STAT_BHUP"); 598 HL_LL(chanp, ISDN_STAT_BHUP); 599 release_b_st(chanp); 600} 601 602static void 603lli_release_bchan(struct FsmInst *fi, int event, void *arg) 604{ 605 struct Channel *chanp = fi->userdata; 606 607 chanp->data_open = 0; 608 FsmChangeState(fi, ST_WAIT_BREL_DISC); 609 chanp->b_st->lli.l4l3(chanp->b_st, DL_RELEASE | REQUEST, NULL); 610} 611 612 613static void 614lli_rel_b_dhup(struct FsmInst *fi, int event, void *arg) 615{ 616 struct Channel *chanp = fi->userdata; 617 618 release_b_st(chanp); 619 lli_dhup_close(fi, event, arg); 620} 621 622static void 623lli_bhup_dhup(struct FsmInst *fi, int event, void *arg) 624{ 625 struct Channel *chanp = fi->userdata; 626 627 if (chanp->debug & 1) 628 link_debug(chanp, 0, "STAT_BHUP"); 629 HL_LL(chanp, ISDN_STAT_BHUP); 630 lli_rel_b_dhup(fi, event, arg); 631} 632 633static void 634lli_abort(struct FsmInst *fi, int event, void *arg) 635{ 636 struct Channel *chanp = fi->userdata; 637 638 chanp->data_open = 0; 639 chanp->b_st->lli.l4l3(chanp->b_st, DL_RELEASE | REQUEST, NULL); 640 lli_bhup_dhup(fi, event, arg); 641} 642 643static void 644lli_release_req(struct FsmInst *fi, int event, void *arg) 645{ 646 struct Channel *chanp = fi->userdata; 647 648 if (chanp->leased) { 649 lli_leased_hup(fi, chanp); 650 } else { 651 FsmChangeState(fi, ST_WAIT_D_REL_CNF); 652 chanp->d_st->lli.l4l3(chanp->d_st, CC_RELEASE | REQUEST, 653 chanp->proc); 654 } 655} 656 657static void 658lli_rel_b_release_req(struct FsmInst *fi, int event, void *arg) 659{ 660 struct Channel *chanp = fi->userdata; 661 662 release_b_st(chanp); 663 lli_release_req(fi, event, arg); 664} 665 666static void 667lli_bhup_release_req(struct FsmInst *fi, int event, void *arg) 668{ 669 struct Channel *chanp = fi->userdata; 670 671 if (chanp->debug & 1) 672 link_debug(chanp, 0, "STAT_BHUP"); 673 HL_LL(chanp, ISDN_STAT_BHUP); 674 lli_rel_b_release_req(fi, event, arg); 675} 676 677 678/* processing charge info */ 679static void 680lli_charge_info(struct FsmInst *fi, int event, void *arg) 681{ 682 struct Channel *chanp = fi->userdata; 683 isdn_ctrl ic; 684 685 ic.driver = chanp->cs->myid; 686 ic.command = ISDN_STAT_CINF; 687 ic.arg = chanp->chan; 688 sprintf(ic.parm.num, "%d", chanp->proc->para.chargeinfo); 689 chanp->cs->iif.statcallb(&ic); 690} 691 692/* error procedures */ 693 694static void 695lli_dchan_not_ready(struct FsmInst *fi, int event, void *arg) 696{ 697 struct Channel *chanp = fi->userdata; 698 699 if (chanp->debug & 1) 700 link_debug(chanp, 0, "STAT_DHUP"); 701 HL_LL(chanp, ISDN_STAT_DHUP); 702} 703 704static void 705lli_no_setup_rsp(struct FsmInst *fi, int event, void *arg) 706{ 707 struct Channel *chanp = fi->userdata; 708 709 if (chanp->debug & 1) 710 link_debug(chanp, 0, "STAT_DHUP"); 711 HL_LL(chanp, ISDN_STAT_DHUP); 712 lli_close(fi); 713} 714 715static void 716lli_error(struct FsmInst *fi, int event, void *arg) 717{ 718 FsmChangeState(fi, ST_WAIT_DRELEASE); 719} 720 721static void 722lli_failure_l(struct FsmInst *fi, int event, void *arg) 723{ 724 struct Channel *chanp = fi->userdata; 725 isdn_ctrl ic; 726 727 FsmChangeState(fi, ST_NULL); 728 ic.driver = chanp->cs->myid; 729 ic.command = ISDN_STAT_CAUSE; 730 ic.arg = chanp->chan; 731 sprintf(ic.parm.num, "L%02X%02X", 0, 0x2f); 732 chanp->cs->iif.statcallb(&ic); 733 HL_LL(chanp, ISDN_STAT_DHUP); 734 chanp->Flags = 0; 735 chanp->cs->cardmsg(chanp->cs, MDL_INFO_REL, (void *) (long)chanp->chan); 736} 737 738static void 739lli_rel_b_fail(struct FsmInst *fi, int event, void *arg) 740{ 741 struct Channel *chanp = fi->userdata; 742 743 release_b_st(chanp); 744 lli_failure_l(fi, event, arg); 745} 746 747static void 748lli_bhup_fail(struct FsmInst *fi, int event, void *arg) 749{ 750 struct Channel *chanp = fi->userdata; 751 752 if (chanp->debug & 1) 753 link_debug(chanp, 0, "STAT_BHUP"); 754 HL_LL(chanp, ISDN_STAT_BHUP); 755 lli_rel_b_fail(fi, event, arg); 756} 757 758static void 759lli_failure_a(struct FsmInst *fi, int event, void *arg) 760{ 761 struct Channel *chanp = fi->userdata; 762 763 chanp->data_open = 0; 764 chanp->b_st->lli.l4l3(chanp->b_st, DL_RELEASE | REQUEST, NULL); 765 lli_bhup_fail(fi, event, arg); 766} 767 768/* *INDENT-OFF* */ 769static struct FsmNode fnlist[] __initdata = 770{ 771 {ST_NULL, EV_DIAL, lli_prep_dialout}, 772 {ST_NULL, EV_RESUME, lli_resume}, 773 {ST_NULL, EV_SETUP_IND, lli_deliver_call}, 774 {ST_NULL, EV_LEASED, lli_leased_in}, 775 {ST_OUT_DIAL, EV_SETUP_CNF, lli_init_bchan_out}, 776 {ST_OUT_DIAL, EV_HANGUP, lli_disconnect_req}, 777 {ST_OUT_DIAL, EV_DISCONNECT_IND, lli_release_req}, 778 {ST_OUT_DIAL, EV_RELEASE, lli_dhup_close}, 779 {ST_OUT_DIAL, EV_NOSETUP_RSP, lli_no_setup_rsp}, 780 {ST_OUT_DIAL, EV_SETUP_ERR, lli_error}, 781 {ST_IN_WAIT_LL, EV_LEASED_REL, lli_failure_l}, 782 {ST_IN_WAIT_LL, EV_ACCEPTD, lli_setup_rsp}, 783 {ST_IN_WAIT_LL, EV_HANGUP, lli_reject_req}, 784 {ST_IN_WAIT_LL, EV_DISCONNECT_IND, lli_release_req}, 785 {ST_IN_WAIT_LL, EV_RELEASE, lli_dhup_close}, 786 {ST_IN_WAIT_LL, EV_SETUP_IND, lli_deliver_call}, 787 {ST_IN_WAIT_LL, EV_SETUP_ERR, lli_error}, 788 {ST_IN_ALERT_SENT, EV_SETUP_CMPL_IND, lli_init_bchan_in}, 789 {ST_IN_ALERT_SENT, EV_ACCEPTD, lli_send_dconnect}, 790 {ST_IN_ALERT_SENT, EV_HANGUP, lli_disconnect_reject}, 791 {ST_IN_ALERT_SENT, EV_DISCONNECT_IND, lli_release_req}, 792 {ST_IN_ALERT_SENT, EV_RELEASE, lli_dhup_close}, 793 {ST_IN_ALERT_SENT, EV_REDIR, lli_send_redir}, 794 {ST_IN_PROCEED_SEND, EV_REDIR, lli_send_redir}, 795 {ST_IN_PROCEED_SEND, EV_ALERT, lli_send_alert}, 796 {ST_IN_PROCEED_SEND, EV_ACCEPTD, lli_send_dconnect}, 797 {ST_IN_PROCEED_SEND, EV_HANGUP, lli_disconnect_reject}, 798 {ST_IN_PROCEED_SEND, EV_DISCONNECT_IND, lli_dhup_close}, 799 {ST_IN_ALERT_SENT, EV_RELEASE, lli_dhup_close}, 800 {ST_IN_WAIT_CONN_ACK, EV_SETUP_CMPL_IND, lli_init_bchan_in}, 801 {ST_IN_WAIT_CONN_ACK, EV_HANGUP, lli_disconnect_req}, 802 {ST_IN_WAIT_CONN_ACK, EV_DISCONNECT_IND, lli_release_req}, 803 {ST_IN_WAIT_CONN_ACK, EV_RELEASE, lli_dhup_close}, 804 {ST_IN_WAIT_CONN_ACK, EV_CONNECT_ERR, lli_error}, 805 {ST_WAIT_BCONN, EV_BC_EST, lli_go_active}, 806 {ST_WAIT_BCONN, EV_BC_REL, lli_rel_b_disc}, 807 {ST_WAIT_BCONN, EV_HANGUP, lli_rel_b_disc}, 808 {ST_WAIT_BCONN, EV_DISCONNECT_IND, lli_rel_b_release_req}, 809 {ST_WAIT_BCONN, EV_RELEASE, lli_rel_b_dhup}, 810 {ST_WAIT_BCONN, EV_LEASED_REL, lli_rel_b_fail}, 811 {ST_WAIT_BCONN, EV_CINF, lli_charge_info}, 812 {ST_ACTIVE, EV_CINF, lli_charge_info}, 813 {ST_ACTIVE, EV_BC_REL, lli_bhup_rel_b}, 814 {ST_ACTIVE, EV_SUSPEND, lli_suspend}, 815 {ST_ACTIVE, EV_HANGUP, lli_disconn_bchan}, 816 {ST_ACTIVE, EV_DISCONNECT_IND, lli_release_bchan}, 817 {ST_ACTIVE, EV_RELEASE, lli_abort}, 818 {ST_ACTIVE, EV_LEASED_REL, lli_failure_a}, 819 {ST_WAIT_BRELEASE, EV_BC_REL, lli_bhup_disc}, 820 {ST_WAIT_BRELEASE, EV_DISCONNECT_IND, lli_bhup_release_req}, 821 {ST_WAIT_BRELEASE, EV_RELEASE, lli_bhup_dhup}, 822 {ST_WAIT_BRELEASE, EV_LEASED_REL, lli_bhup_fail}, 823 {ST_WAIT_BREL_DISC, EV_BC_REL, lli_bhup_release_req}, 824 {ST_WAIT_BREL_DISC, EV_RELEASE, lli_bhup_dhup}, 825 {ST_WAIT_DCOMMAND, EV_HANGUP, lli_start_disc}, 826 {ST_WAIT_DCOMMAND, EV_DISCONNECT_IND, lli_release_req}, 827 {ST_WAIT_DCOMMAND, EV_RELEASE, lli_dhup_close}, 828 {ST_WAIT_DCOMMAND, EV_LEASED_REL, lli_failure_l}, 829 {ST_WAIT_DRELEASE, EV_RELEASE, lli_dhup_close}, 830 {ST_WAIT_DRELEASE, EV_DIAL, lli_dchan_not_ready}, 831 /* ETS 300-104 16.1 */ 832 {ST_WAIT_D_REL_CNF, EV_RELEASE, lli_dhup_close}, 833 {ST_WAIT_D_REL_CNF, EV_DIAL, lli_dchan_not_ready}, 834}; 835/* *INDENT-ON* */ 836 837int __init 838CallcNew(void) 839{ 840 callcfsm.state_count = STATE_COUNT; 841 callcfsm.event_count = EVENT_COUNT; 842 callcfsm.strEvent = strEvent; 843 callcfsm.strState = strState; 844 return FsmNew(&callcfsm, fnlist, ARRAY_SIZE(fnlist)); 845} 846 847void 848CallcFree(void) 849{ 850 FsmFree(&callcfsm); 851} 852 853static void 854release_b_st(struct Channel *chanp) 855{ 856 struct PStack *st = chanp->b_st; 857 858 if(test_and_clear_bit(FLG_START_B, &chanp->Flags)) { 859 chanp->bcs->BC_Close(chanp->bcs); 860 switch (chanp->l2_active_protocol) { 861 case (ISDN_PROTO_L2_X75I): 862 releasestack_isdnl2(st); 863 break; 864 case (ISDN_PROTO_L2_HDLC): 865 case (ISDN_PROTO_L2_HDLC_56K): 866 case (ISDN_PROTO_L2_TRANS): 867 case (ISDN_PROTO_L2_MODEM): 868 case (ISDN_PROTO_L2_FAX): 869 releasestack_transl2(st); 870 break; 871 } 872 } 873} 874 875static struct Channel 876*selectfreechannel(struct PStack *st, int bch) 877{ 878 struct IsdnCardState *cs = st->l1.hardware; 879 struct Channel *chanp = st->lli.userdata; 880 int i; 881 882 if (test_bit(FLG_TWO_DCHAN, &cs->HW_Flags)) 883 i=1; 884 else 885 i=0; 886 887 if (!bch) { 888 i = 2; /* virtual channel */ 889 chanp += 2; 890 } 891 892 while (i < ((bch) ? cs->chanlimit : (2 + MAX_WAITING_CALLS))) { 893 if (chanp->fi.state == ST_NULL) 894 return (chanp); 895 chanp++; 896 i++; 897 } 898 899 if (bch) /* number of channels is limited */ { 900 i = 2; /* virtual channel */ 901 chanp = st->lli.userdata; 902 chanp += i; 903 while (i < (2 + MAX_WAITING_CALLS)) { 904 if (chanp->fi.state == ST_NULL) 905 return (chanp); 906 chanp++; 907 i++; 908 } 909 } 910 return (NULL); 911} 912 913static void stat_redir_result(struct IsdnCardState *cs, int chan, ulong result) 914{ isdn_ctrl ic; 915 916 ic.driver = cs->myid; 917 ic.command = ISDN_STAT_REDIR; 918 ic.arg = chan; 919 ic.parm.num[0] = result; 920 cs->iif.statcallb(&ic); 921} /* stat_redir_result */ 922 923static void 924dchan_l3l4(struct PStack *st, int pr, void *arg) 925{ 926 struct l3_process *pc = arg; 927 struct IsdnCardState *cs = st->l1.hardware; 928 struct Channel *chanp; 929 930 if(!pc) 931 return; 932 933 if (pr == (CC_SETUP | INDICATION)) { 934 if (!(chanp = selectfreechannel(pc->st, pc->para.bchannel))) { 935 pc->para.cause = 0x11; /* User busy */ 936 pc->st->lli.l4l3(pc->st, CC_REJECT | REQUEST, pc); 937 } else { 938 chanp->proc = pc; 939 pc->chan = chanp; 940 FsmEvent(&chanp->fi, EV_SETUP_IND, NULL); 941 } 942 return; 943 } 944 if (!(chanp = pc->chan)) 945 return; 946 947 switch (pr) { 948 case (CC_MORE_INFO | INDICATION): 949 FsmEvent(&chanp->fi, EV_SETUP_IND, NULL); 950 break; 951 case (CC_DISCONNECT | INDICATION): 952 FsmEvent(&chanp->fi, EV_DISCONNECT_IND, NULL); 953 break; 954 case (CC_RELEASE | CONFIRM): 955 FsmEvent(&chanp->fi, EV_RELEASE, NULL); 956 break; 957 case (CC_SUSPEND | CONFIRM): 958 FsmEvent(&chanp->fi, EV_RELEASE, NULL); 959 break; 960 case (CC_RESUME | CONFIRM): 961 FsmEvent(&chanp->fi, EV_SETUP_CNF, NULL); 962 break; 963 case (CC_RESUME_ERR): 964 FsmEvent(&chanp->fi, EV_RELEASE, NULL); 965 break; 966 case (CC_RELEASE | INDICATION): 967 FsmEvent(&chanp->fi, EV_RELEASE, NULL); 968 break; 969 case (CC_SETUP_COMPL | INDICATION): 970 FsmEvent(&chanp->fi, EV_SETUP_CMPL_IND, NULL); 971 break; 972 case (CC_SETUP | CONFIRM): 973 FsmEvent(&chanp->fi, EV_SETUP_CNF, NULL); 974 break; 975 case (CC_CHARGE | INDICATION): 976 FsmEvent(&chanp->fi, EV_CINF, NULL); 977 break; 978 case (CC_NOSETUP_RSP): 979 FsmEvent(&chanp->fi, EV_NOSETUP_RSP, NULL); 980 break; 981 case (CC_SETUP_ERR): 982 FsmEvent(&chanp->fi, EV_SETUP_ERR, NULL); 983 break; 984 case (CC_CONNECT_ERR): 985 FsmEvent(&chanp->fi, EV_CONNECT_ERR, NULL); 986 break; 987 case (CC_RELEASE_ERR): 988 FsmEvent(&chanp->fi, EV_RELEASE, NULL); 989 break; 990 case (CC_PROCEED_SEND | INDICATION): 991 case (CC_PROCEEDING | INDICATION): 992 case (CC_ALERTING | INDICATION): 993 case (CC_PROGRESS | INDICATION): 994 case (CC_NOTIFY | INDICATION): 995 break; 996 case (CC_REDIR | INDICATION): 997 stat_redir_result(cs, chanp->chan, pc->redir_result); 998 break; 999 default: 1000 if (chanp->debug & 0x800) { 1001 HiSax_putstatus(chanp->cs, "Ch", 1002 "%d L3->L4 unknown primitiv %#x", 1003 chanp->chan, pr); 1004 } 1005 } 1006} 1007 1008static void 1009dummy_pstack(struct PStack *st, int pr, void *arg) { 1010 printk(KERN_WARNING"call to dummy_pstack pr=%04x arg %lx\n", pr, (long)arg); 1011} 1012 1013static int 1014init_PStack(struct PStack **stp) { 1015 *stp = kmalloc(sizeof(struct PStack), GFP_ATOMIC); 1016 if (!*stp) 1017 return -ENOMEM; 1018 (*stp)->next = NULL; 1019 (*stp)->l1.l1l2 = dummy_pstack; 1020 (*stp)->l1.l1hw = dummy_pstack; 1021 (*stp)->l1.l1tei = dummy_pstack; 1022 (*stp)->l2.l2tei = dummy_pstack; 1023 (*stp)->l2.l2l1 = dummy_pstack; 1024 (*stp)->l2.l2l3 = dummy_pstack; 1025 (*stp)->l3.l3l2 = dummy_pstack; 1026 (*stp)->l3.l3ml3 = dummy_pstack; 1027 (*stp)->l3.l3l4 = dummy_pstack; 1028 (*stp)->lli.l4l3 = dummy_pstack; 1029 (*stp)->ma.layer = dummy_pstack; 1030 return 0; 1031} 1032 1033static int 1034init_d_st(struct Channel *chanp) 1035{ 1036 struct PStack *st; 1037 struct IsdnCardState *cs = chanp->cs; 1038 char tmp[16]; 1039 int err; 1040 1041 err = init_PStack(&chanp->d_st); 1042 if (err) 1043 return err; 1044 st = chanp->d_st; 1045 st->next = NULL; 1046 HiSax_addlist(cs, st); 1047 setstack_HiSax(st, cs); 1048 st->l2.sap = 0; 1049 st->l2.tei = -1; 1050 st->l2.flag = 0; 1051 test_and_set_bit(FLG_MOD128, &st->l2.flag); 1052 test_and_set_bit(FLG_LAPD, &st->l2.flag); 1053 test_and_set_bit(FLG_ORIG, &st->l2.flag); 1054 st->l2.maxlen = MAX_DFRAME_LEN; 1055 st->l2.window = 1; 1056 st->l2.T200 = 1000; /* 1000 milliseconds */ 1057 st->l2.N200 = 3; /* try 3 times */ 1058 st->l2.T203 = 10000; /* 10000 milliseconds */ 1059 if (test_bit(FLG_TWO_DCHAN, &cs->HW_Flags)) 1060 sprintf(tmp, "DCh%d Q.921 ", chanp->chan); 1061 else 1062 sprintf(tmp, "DCh Q.921 "); 1063 setstack_isdnl2(st, tmp); 1064 setstack_l3dc(st, chanp); 1065 st->lli.userdata = chanp; 1066 st->l3.l3l4 = dchan_l3l4; 1067 1068 return 0; 1069} 1070 1071static void 1072callc_debug(struct FsmInst *fi, char *fmt, ...) 1073{ 1074 va_list args; 1075 struct Channel *chanp = fi->userdata; 1076 char tmp[16]; 1077 1078 va_start(args, fmt); 1079 sprintf(tmp, "Ch%d callc ", chanp->chan); 1080 VHiSax_putstatus(chanp->cs, tmp, fmt, args); 1081 va_end(args); 1082} 1083 1084static int 1085init_chan(int chan, struct IsdnCardState *csta) 1086{ 1087 struct Channel *chanp = csta->channel + chan; 1088 int err; 1089 1090 chanp->cs = csta; 1091 chanp->bcs = csta->bcs + chan; 1092 chanp->chan = chan; 1093 chanp->incoming = 0; 1094 chanp->debug = 0; 1095 chanp->Flags = 0; 1096 chanp->leased = 0; 1097 err = init_PStack(&chanp->b_st); 1098 if (err) 1099 return err; 1100 chanp->b_st->l1.delay = DEFAULT_B_DELAY; 1101 chanp->fi.fsm = &callcfsm; 1102 chanp->fi.state = ST_NULL; 1103 chanp->fi.debug = 0; 1104 chanp->fi.userdata = chanp; 1105 chanp->fi.printdebug = callc_debug; 1106 FsmInitTimer(&chanp->fi, &chanp->dial_timer); 1107 FsmInitTimer(&chanp->fi, &chanp->drel_timer); 1108 if (!chan || (test_bit(FLG_TWO_DCHAN, &csta->HW_Flags) && chan < 2)) { 1109 err = init_d_st(chanp); 1110 if (err) 1111 return err; 1112 } else { 1113 chanp->d_st = csta->channel->d_st; 1114 } 1115 chanp->data_open = 0; 1116 return 0; 1117} 1118 1119int 1120CallcNewChan(struct IsdnCardState *csta) { 1121 int i, err; 1122 1123 chancount += 2; 1124 err = init_chan(0, csta); 1125 if (err) 1126 return err; 1127 err = init_chan(1, csta); 1128 if (err) 1129 return err; 1130 printk(KERN_INFO "HiSax: 2 channels added\n"); 1131 1132 for (i = 0; i < MAX_WAITING_CALLS; i++) { 1133 err = init_chan(i+2,csta); 1134 if (err) 1135 return err; 1136 } 1137 printk(KERN_INFO "HiSax: MAX_WAITING_CALLS added\n"); 1138 if (test_bit(FLG_PTP, &csta->channel->d_st->l2.flag)) { 1139 printk(KERN_INFO "LAYER2 WATCHING ESTABLISH\n"); 1140 csta->channel->d_st->lli.l4l3(csta->channel->d_st, 1141 DL_ESTABLISH | REQUEST, NULL); 1142 } 1143 return (0); 1144} 1145 1146static void 1147release_d_st(struct Channel *chanp) 1148{ 1149 struct PStack *st = chanp->d_st; 1150 1151 if (!st) 1152 return; 1153 releasestack_isdnl2(st); 1154 releasestack_isdnl3(st); 1155 HiSax_rmlist(st->l1.hardware, st); 1156 kfree(st); 1157 chanp->d_st = NULL; 1158} 1159 1160void 1161CallcFreeChan(struct IsdnCardState *csta) 1162{ 1163 int i; 1164 1165 for (i = 0; i < 2; i++) { 1166 FsmDelTimer(&csta->channel[i].drel_timer, 74); 1167 FsmDelTimer(&csta->channel[i].dial_timer, 75); 1168 if (i || test_bit(FLG_TWO_DCHAN, &csta->HW_Flags)) 1169 release_d_st(csta->channel + i); 1170 if (csta->channel[i].b_st) { 1171 release_b_st(csta->channel + i); 1172 kfree(csta->channel[i].b_st); 1173 csta->channel[i].b_st = NULL; 1174 } else 1175 printk(KERN_WARNING "CallcFreeChan b_st ch%d already freed\n", i); 1176 if (i || test_bit(FLG_TWO_DCHAN, &csta->HW_Flags)) { 1177 release_d_st(csta->channel + i); 1178 } else 1179 csta->channel[i].d_st = NULL; 1180 } 1181} 1182 1183static void 1184lldata_handler(struct PStack *st, int pr, void *arg) 1185{ 1186 struct Channel *chanp = (struct Channel *) st->lli.userdata; 1187 struct sk_buff *skb = arg; 1188 1189 switch (pr) { 1190 case (DL_DATA | INDICATION): 1191 if (chanp->data_open) { 1192 if (chanp->debug & 0x800) 1193 link_debug(chanp, 0, "lldata: %d", skb->len); 1194 chanp->cs->iif.rcvcallb_skb(chanp->cs->myid, chanp->chan, skb); 1195 } else { 1196 link_debug(chanp, 0, "lldata: channel not open"); 1197 dev_kfree_skb(skb); 1198 } 1199 break; 1200 case (DL_ESTABLISH | INDICATION): 1201 case (DL_ESTABLISH | CONFIRM): 1202 FsmEvent(&chanp->fi, EV_BC_EST, NULL); 1203 break; 1204 case (DL_RELEASE | INDICATION): 1205 case (DL_RELEASE | CONFIRM): 1206 FsmEvent(&chanp->fi, EV_BC_REL, NULL); 1207 break; 1208 default: 1209 printk(KERN_WARNING "lldata_handler unknown primitive %#x\n", 1210 pr); 1211 break; 1212 } 1213} 1214 1215static void 1216lltrans_handler(struct PStack *st, int pr, void *arg) 1217{ 1218 struct Channel *chanp = (struct Channel *) st->lli.userdata; 1219 struct sk_buff *skb = arg; 1220 1221 switch (pr) { 1222 case (PH_DATA | INDICATION): 1223 if (chanp->data_open) { 1224 if (chanp->debug & 0x800) 1225 link_debug(chanp, 0, "lltrans: %d", skb->len); 1226 chanp->cs->iif.rcvcallb_skb(chanp->cs->myid, chanp->chan, skb); 1227 } else { 1228 link_debug(chanp, 0, "lltrans: channel not open"); 1229 dev_kfree_skb(skb); 1230 } 1231 break; 1232 case (PH_ACTIVATE | INDICATION): 1233 case (PH_ACTIVATE | CONFIRM): 1234 FsmEvent(&chanp->fi, EV_BC_EST, NULL); 1235 break; 1236 case (PH_DEACTIVATE | INDICATION): 1237 case (PH_DEACTIVATE | CONFIRM): 1238 FsmEvent(&chanp->fi, EV_BC_REL, NULL); 1239 break; 1240 default: 1241 printk(KERN_WARNING "lltrans_handler unknown primitive %#x\n", 1242 pr); 1243 break; 1244 } 1245} 1246 1247void 1248lli_writewakeup(struct PStack *st, int len) 1249{ 1250 struct Channel *chanp = st->lli.userdata; 1251 isdn_ctrl ic; 1252 1253 if (chanp->debug & 0x800) 1254 link_debug(chanp, 0, "llwakeup: %d", len); 1255 ic.driver = chanp->cs->myid; 1256 ic.command = ISDN_STAT_BSENT; 1257 ic.arg = chanp->chan; 1258 ic.parm.length = len; 1259 chanp->cs->iif.statcallb(&ic); 1260} 1261 1262static int 1263init_b_st(struct Channel *chanp, int incoming) 1264{ 1265 struct PStack *st = chanp->b_st; 1266 struct IsdnCardState *cs = chanp->cs; 1267 char tmp[16]; 1268 1269 st->l1.hardware = cs; 1270 if (chanp->leased) 1271 st->l1.bc = chanp->chan & 1; 1272 else 1273 st->l1.bc = chanp->proc->para.bchannel - 1; 1274 switch (chanp->l2_active_protocol) { 1275 case (ISDN_PROTO_L2_X75I): 1276 case (ISDN_PROTO_L2_HDLC): 1277 st->l1.mode = L1_MODE_HDLC; 1278 break; 1279 case (ISDN_PROTO_L2_HDLC_56K): 1280 st->l1.mode = L1_MODE_HDLC_56K; 1281 break; 1282 case (ISDN_PROTO_L2_TRANS): 1283 st->l1.mode = L1_MODE_TRANS; 1284 break; 1285 case (ISDN_PROTO_L2_MODEM): 1286 st->l1.mode = L1_MODE_V32; 1287 break; 1288 case (ISDN_PROTO_L2_FAX): 1289 st->l1.mode = L1_MODE_FAX; 1290 break; 1291 } 1292 chanp->bcs->conmsg = NULL; 1293 if (chanp->bcs->BC_SetStack(st, chanp->bcs)) 1294 return (-1); 1295 st->l2.flag = 0; 1296 test_and_set_bit(FLG_LAPB, &st->l2.flag); 1297 st->l2.maxlen = MAX_DATA_SIZE; 1298 if (!incoming) 1299 test_and_set_bit(FLG_ORIG, &st->l2.flag); 1300 st->l2.T200 = 1000; /* 1000 milliseconds */ 1301 st->l2.window = 7; 1302 st->l2.N200 = 4; /* try 4 times */ 1303 st->l2.T203 = 5000; /* 5000 milliseconds */ 1304 st->l3.debug = 0; 1305 switch (chanp->l2_active_protocol) { 1306 case (ISDN_PROTO_L2_X75I): 1307 sprintf(tmp, "Ch%d X.75", chanp->chan); 1308 setstack_isdnl2(st, tmp); 1309 setstack_l3bc(st, chanp); 1310 st->l2.l2l3 = lldata_handler; 1311 st->lli.userdata = chanp; 1312 test_and_clear_bit(FLG_LLI_L1WAKEUP, &st->lli.flag); 1313 test_and_set_bit(FLG_LLI_L2WAKEUP, &st->lli.flag); 1314 st->l2.l2m.debug = chanp->debug & 16; 1315 st->l2.debug = chanp->debug & 64; 1316 break; 1317 case (ISDN_PROTO_L2_HDLC): 1318 case (ISDN_PROTO_L2_HDLC_56K): 1319 case (ISDN_PROTO_L2_TRANS): 1320 case (ISDN_PROTO_L2_MODEM): 1321 case (ISDN_PROTO_L2_FAX): 1322 st->l1.l1l2 = lltrans_handler; 1323 st->lli.userdata = chanp; 1324 test_and_set_bit(FLG_LLI_L1WAKEUP, &st->lli.flag); 1325 test_and_clear_bit(FLG_LLI_L2WAKEUP, &st->lli.flag); 1326 setstack_transl2(st); 1327 setstack_l3bc(st, chanp); 1328 break; 1329 } 1330 test_and_set_bit(FLG_START_B, &chanp->Flags); 1331 return (0); 1332} 1333 1334static void 1335leased_l4l3(struct PStack *st, int pr, void *arg) 1336{ 1337 struct Channel *chanp = (struct Channel *) st->lli.userdata; 1338 struct sk_buff *skb = arg; 1339 1340 switch (pr) { 1341 case (DL_DATA | REQUEST): 1342 link_debug(chanp, 0, "leased line d-channel DATA"); 1343 dev_kfree_skb(skb); 1344 break; 1345 case (DL_ESTABLISH | REQUEST): 1346 st->l2.l2l1(st, PH_ACTIVATE | REQUEST, NULL); 1347 break; 1348 case (DL_RELEASE | REQUEST): 1349 break; 1350 default: 1351 printk(KERN_WARNING "transd_l4l3 unknown primitive %#x\n", 1352 pr); 1353 break; 1354 } 1355} 1356 1357static void 1358leased_l1l2(struct PStack *st, int pr, void *arg) 1359{ 1360 struct Channel *chanp = (struct Channel *) st->lli.userdata; 1361 struct sk_buff *skb = arg; 1362 int i,event = EV_LEASED_REL; 1363 1364 switch (pr) { 1365 case (PH_DATA | INDICATION): 1366 link_debug(chanp, 0, "leased line d-channel DATA"); 1367 dev_kfree_skb(skb); 1368 break; 1369 case (PH_ACTIVATE | INDICATION): 1370 case (PH_ACTIVATE | CONFIRM): 1371 event = EV_LEASED; 1372 case (PH_DEACTIVATE | INDICATION): 1373 case (PH_DEACTIVATE | CONFIRM): 1374 if (test_bit(FLG_TWO_DCHAN, &chanp->cs->HW_Flags)) 1375 i = 1; 1376 else 1377 i = 0; 1378 while (i < 2) { 1379 FsmEvent(&chanp->fi, event, NULL); 1380 chanp++; 1381 i++; 1382 } 1383 break; 1384 default: 1385 printk(KERN_WARNING 1386 "transd_l1l2 unknown primitive %#x\n", pr); 1387 break; 1388 } 1389} 1390 1391static void 1392distr_debug(struct IsdnCardState *csta, int debugflags) 1393{ 1394 int i; 1395 struct Channel *chanp = csta->channel; 1396 1397 for (i = 0; i < (2 + MAX_WAITING_CALLS) ; i++) { 1398 chanp[i].debug = debugflags; 1399 chanp[i].fi.debug = debugflags & 2; 1400 chanp[i].d_st->l2.l2m.debug = debugflags & 8; 1401 chanp[i].b_st->l2.l2m.debug = debugflags & 0x10; 1402 chanp[i].d_st->l2.debug = debugflags & 0x20; 1403 chanp[i].b_st->l2.debug = debugflags & 0x40; 1404 chanp[i].d_st->l3.l3m.debug = debugflags & 0x80; 1405 chanp[i].b_st->l3.l3m.debug = debugflags & 0x100; 1406 chanp[i].b_st->ma.tei_m.debug = debugflags & 0x200; 1407 chanp[i].b_st->ma.debug = debugflags & 0x200; 1408 chanp[i].d_st->l1.l1m.debug = debugflags & 0x1000; 1409 chanp[i].b_st->l1.l1m.debug = debugflags & 0x2000; 1410 } 1411 if (debugflags & 4) 1412 csta->debug |= DEB_DLOG_HEX; 1413 else 1414 csta->debug &= ~DEB_DLOG_HEX; 1415} 1416 1417static char tmpbuf[256]; 1418 1419static void 1420capi_debug(struct Channel *chanp, capi_msg *cm) 1421{ 1422 char *t = tmpbuf; 1423 1424 t += QuickHex(t, (u_char *)cm, (cm->Length>50)? 50: cm->Length); 1425 t--; 1426 *t= 0; 1427 HiSax_putstatus(chanp->cs, "Ch", "%d CAPIMSG %s", chanp->chan, tmpbuf); 1428} 1429 1430static void 1431lli_got_fac_req(struct Channel *chanp, capi_msg *cm) { 1432 if ((cm->para[0] != 3) || (cm->para[1] != 0)) 1433 return; 1434 if (cm->para[2]<3) 1435 return; 1436 if (cm->para[4] != 0) 1437 return; 1438 switch(cm->para[3]) { 1439 case 4: /* Suspend */ 1440 strncpy(chanp->setup.phone, &cm->para[5], cm->para[5] +1); 1441 FsmEvent(&chanp->fi, EV_SUSPEND, cm); 1442 break; 1443 case 5: /* Resume */ 1444 strncpy(chanp->setup.phone, &cm->para[5], cm->para[5] +1); 1445 if (chanp->fi.state == ST_NULL) { 1446 FsmEvent(&chanp->fi, EV_RESUME, cm); 1447 } else { 1448 FsmDelTimer(&chanp->dial_timer, 72); 1449 FsmAddTimer(&chanp->dial_timer, 80, EV_RESUME, cm, 73); 1450 } 1451 break; 1452 } 1453} 1454 1455static void 1456lli_got_manufacturer(struct Channel *chanp, struct IsdnCardState *cs, capi_msg *cm) { 1457 if ((cs->typ == ISDN_CTYPE_ELSA) || (cs->typ == ISDN_CTYPE_ELSA_PNP) || 1458 (cs->typ == ISDN_CTYPE_ELSA_PCI)) { 1459 if (cs->hw.elsa.MFlag) { 1460 cs->cardmsg(cs, CARD_AUX_IND, cm->para); 1461 } 1462 } 1463} 1464 1465 1466/***************************************************************/ 1467/* Limit the available number of channels for the current card */ 1468/***************************************************************/ 1469static int 1470set_channel_limit(struct IsdnCardState *cs, int chanmax) 1471{ 1472 isdn_ctrl ic; 1473 int i, ii; 1474 1475 if ((chanmax < 0) || (chanmax > 2)) 1476 return(-EINVAL); 1477 cs->chanlimit = 0; 1478 for (ii = 0; ii < 2; ii++) { 1479 ic.driver = cs->myid; 1480 ic.command = ISDN_STAT_DISCH; 1481 ic.arg = ii; 1482 if (ii >= chanmax) 1483 ic.parm.num[0] = 0; /* disabled */ 1484 else 1485 ic.parm.num[0] = 1; /* enabled */ 1486 i = cs->iif.statcallb(&ic); 1487 if (i) return(-EINVAL); 1488 if (ii < chanmax) 1489 cs->chanlimit++; 1490 } 1491 return(0); 1492} /* set_channel_limit */ 1493 1494int 1495HiSax_command(isdn_ctrl * ic) 1496{ 1497 struct IsdnCardState *csta = hisax_findcard(ic->driver); 1498 struct PStack *st; 1499 struct Channel *chanp; 1500 int i; 1501 u_int num; 1502 1503 if (!csta) { 1504 printk(KERN_ERR 1505 "HiSax: if_command %d called with invalid driverId %d!\n", 1506 ic->command, ic->driver); 1507 return -ENODEV; 1508 } 1509 switch (ic->command) { 1510 case (ISDN_CMD_SETEAZ): 1511 chanp = csta->channel + ic->arg; 1512 break; 1513 case (ISDN_CMD_SETL2): 1514 chanp = csta->channel + (ic->arg & 0xff); 1515 if (chanp->debug & 1) 1516 link_debug(chanp, 1, "SETL2 card %d %ld", 1517 csta->cardnr + 1, ic->arg >> 8); 1518 chanp->l2_protocol = ic->arg >> 8; 1519 break; 1520 case (ISDN_CMD_SETL3): 1521 chanp = csta->channel + (ic->arg & 0xff); 1522 if (chanp->debug & 1) 1523 link_debug(chanp, 1, "SETL3 card %d %ld", 1524 csta->cardnr + 1, ic->arg >> 8); 1525 chanp->l3_protocol = ic->arg >> 8; 1526 break; 1527 case (ISDN_CMD_DIAL): 1528 chanp = csta->channel + (ic->arg & 0xff); 1529 if (chanp->debug & 1) 1530 link_debug(chanp, 1, "DIAL %s -> %s (%d,%d)", 1531 ic->parm.setup.eazmsn, ic->parm.setup.phone, 1532 ic->parm.setup.si1, ic->parm.setup.si2); 1533 memcpy(&chanp->setup, &ic->parm.setup, sizeof(setup_parm)); 1534 if (!strcmp(chanp->setup.eazmsn, "0")) 1535 chanp->setup.eazmsn[0] = '\0'; 1536 /* this solution is dirty and may be change, if 1537 * we make a callreference based callmanager */ 1538 if (chanp->fi.state == ST_NULL) { 1539 FsmEvent(&chanp->fi, EV_DIAL, NULL); 1540 } else { 1541 FsmDelTimer(&chanp->dial_timer, 70); 1542 FsmAddTimer(&chanp->dial_timer, 50, EV_DIAL, NULL, 71); 1543 } 1544 break; 1545 case (ISDN_CMD_ACCEPTB): 1546 chanp = csta->channel + ic->arg; 1547 if (chanp->debug & 1) 1548 link_debug(chanp, 1, "ACCEPTB"); 1549 FsmEvent(&chanp->fi, EV_ACCEPTB, NULL); 1550 break; 1551 case (ISDN_CMD_ACCEPTD): 1552 chanp = csta->channel + ic->arg; 1553 memcpy(&chanp->setup, &ic->parm.setup, sizeof(setup_parm)); 1554 if (chanp->debug & 1) 1555 link_debug(chanp, 1, "ACCEPTD"); 1556 FsmEvent(&chanp->fi, EV_ACCEPTD, NULL); 1557 break; 1558 case (ISDN_CMD_HANGUP): 1559 chanp = csta->channel + ic->arg; 1560 if (chanp->debug & 1) 1561 link_debug(chanp, 1, "HANGUP"); 1562 FsmEvent(&chanp->fi, EV_HANGUP, NULL); 1563 break; 1564 case (CAPI_PUT_MESSAGE): 1565 chanp = csta->channel + ic->arg; 1566 if (chanp->debug & 1) 1567 capi_debug(chanp, &ic->parm.cmsg); 1568 if (ic->parm.cmsg.Length < 8) 1569 break; 1570 switch(ic->parm.cmsg.Command) { 1571 case CAPI_FACILITY: 1572 if (ic->parm.cmsg.Subcommand == CAPI_REQ) 1573 lli_got_fac_req(chanp, &ic->parm.cmsg); 1574 break; 1575 case CAPI_MANUFACTURER: 1576 if (ic->parm.cmsg.Subcommand == CAPI_REQ) 1577 lli_got_manufacturer(chanp, csta, &ic->parm.cmsg); 1578 break; 1579 default: 1580 break; 1581 } 1582 break; 1583 case (ISDN_CMD_IOCTL): 1584 switch (ic->arg) { 1585 case (0): 1586 num = *(unsigned int *) ic->parm.num; 1587 HiSax_reportcard(csta->cardnr, num); 1588 break; 1589 case (1): 1590 num = *(unsigned int *) ic->parm.num; 1591 distr_debug(csta, num); 1592 printk(KERN_DEBUG "HiSax: debugging flags card %d set to %x\n", 1593 csta->cardnr + 1, num); 1594 HiSax_putstatus(csta, "debugging flags ", 1595 "card %d set to %x", csta->cardnr + 1, num); 1596 break; 1597 case (2): 1598 num = *(unsigned int *) ic->parm.num; 1599 csta->channel[0].b_st->l1.delay = num; 1600 csta->channel[1].b_st->l1.delay = num; 1601 HiSax_putstatus(csta, "delay ", "card %d set to %d ms", 1602 csta->cardnr + 1, num); 1603 printk(KERN_DEBUG "HiSax: delay card %d set to %d ms\n", 1604 csta->cardnr + 1, num); 1605 break; 1606 case (5): /* set card in leased mode */ 1607 num = *(unsigned int *) ic->parm.num; 1608 if ((num <1) || (num > 2)) { 1609 HiSax_putstatus(csta, "Set LEASED ", 1610 "wrong channel %d", num); 1611 printk(KERN_WARNING "HiSax: Set LEASED wrong channel %d\n", 1612 num); 1613 } else { 1614 num--; 1615 chanp = csta->channel +num; 1616 chanp->leased = 1; 1617 HiSax_putstatus(csta, "Card", 1618 "%d channel %d set leased mode\n", 1619 csta->cardnr + 1, num + 1); 1620 chanp->d_st->l1.l1l2 = leased_l1l2; 1621 chanp->d_st->lli.l4l3 = leased_l4l3; 1622 chanp->d_st->lli.l4l3(chanp->d_st, 1623 DL_ESTABLISH | REQUEST, NULL); 1624 } 1625 break; 1626 case (6): /* set B-channel test loop */ 1627 num = *(unsigned int *) ic->parm.num; 1628 if (csta->stlist) 1629 csta->stlist->l2.l2l1(csta->stlist, 1630 PH_TESTLOOP | REQUEST, (void *) (long)num); 1631 break; 1632 case (7): /* set card in PTP mode */ 1633 num = *(unsigned int *) ic->parm.num; 1634 if (test_bit(FLG_TWO_DCHAN, &csta->HW_Flags)) { 1635 printk(KERN_ERR "HiSax PTP mode only with one TEI possible\n"); 1636 } else if (num) { 1637 test_and_set_bit(FLG_PTP, &csta->channel[0].d_st->l2.flag); 1638 test_and_set_bit(FLG_FIXED_TEI, &csta->channel[0].d_st->l2.flag); 1639 csta->channel[0].d_st->l2.tei = 0; 1640 HiSax_putstatus(csta, "set card ", "in PTP mode"); 1641 printk(KERN_DEBUG "HiSax: set card in PTP mode\n"); 1642 printk(KERN_INFO "LAYER2 WATCHING ESTABLISH\n"); 1643 csta->channel[0].d_st->lli.l4l3(csta->channel[0].d_st, 1644 DL_ESTABLISH | REQUEST, NULL); 1645 } else { 1646 test_and_clear_bit(FLG_PTP, &csta->channel[0].d_st->l2.flag); 1647 test_and_clear_bit(FLG_FIXED_TEI, &csta->channel[0].d_st->l2.flag); 1648 HiSax_putstatus(csta, "set card ", "in PTMP mode"); 1649 printk(KERN_DEBUG "HiSax: set card in PTMP mode\n"); 1650 } 1651 break; 1652 case (8): /* set card in FIXED TEI mode */ 1653 num = *(unsigned int *) ic->parm.num; 1654 chanp = csta->channel + (num & 1); 1655 num = num >>1; 1656 if (num == 127) { 1657 test_and_clear_bit(FLG_FIXED_TEI, &chanp->d_st->l2.flag); 1658 chanp->d_st->l2.tei = -1; 1659 HiSax_putstatus(csta, "set card ", "in VAR TEI mode"); 1660 printk(KERN_DEBUG "HiSax: set card in VAR TEI mode\n"); 1661 } else { 1662 test_and_set_bit(FLG_FIXED_TEI, &chanp->d_st->l2.flag); 1663 chanp->d_st->l2.tei = num; 1664 HiSax_putstatus(csta, "set card ", "in FIXED TEI (%d) mode", num); 1665 printk(KERN_DEBUG "HiSax: set card in FIXED TEI (%d) mode\n", 1666 num); 1667 } 1668 chanp->d_st->lli.l4l3(chanp->d_st, 1669 DL_ESTABLISH | REQUEST, NULL); 1670 break; 1671 case (11): 1672 num = csta->debug & DEB_DLOG_HEX; 1673 csta->debug = *(unsigned int *) ic->parm.num; 1674 csta->debug |= num; 1675 HiSax_putstatus(cards[0].cs, "l1 debugging ", 1676 "flags card %d set to %x", 1677 csta->cardnr + 1, csta->debug); 1678 printk(KERN_DEBUG "HiSax: l1 debugging flags card %d set to %x\n", 1679 csta->cardnr + 1, csta->debug); 1680 break; 1681 case (13): 1682 csta->channel[0].d_st->l3.debug = *(unsigned int *) ic->parm.num; 1683 csta->channel[1].d_st->l3.debug = *(unsigned int *) ic->parm.num; 1684 HiSax_putstatus(cards[0].cs, "l3 debugging ", 1685 "flags card %d set to %x\n", csta->cardnr + 1, 1686 *(unsigned int *) ic->parm.num); 1687 printk(KERN_DEBUG "HiSax: l3 debugging flags card %d set to %x\n", 1688 csta->cardnr + 1, *(unsigned int *) ic->parm.num); 1689 break; 1690 case (10): 1691 i = *(unsigned int *) ic->parm.num; 1692 return(set_channel_limit(csta, i)); 1693 default: 1694 if (csta->auxcmd) 1695 return(csta->auxcmd(csta, ic)); 1696 printk(KERN_DEBUG "HiSax: invalid ioclt %d\n", 1697 (int) ic->arg); 1698 return (-EINVAL); 1699 } 1700 break; 1701 1702 case (ISDN_CMD_PROCEED): 1703 chanp = csta->channel + ic->arg; 1704 if (chanp->debug & 1) 1705 link_debug(chanp, 1, "PROCEED"); 1706 FsmEvent(&chanp->fi, EV_PROCEED, NULL); 1707 break; 1708 1709 case (ISDN_CMD_ALERT): 1710 chanp = csta->channel + ic->arg; 1711 if (chanp->debug & 1) 1712 link_debug(chanp, 1, "ALERT"); 1713 FsmEvent(&chanp->fi, EV_ALERT, NULL); 1714 break; 1715 1716 case (ISDN_CMD_REDIR): 1717 chanp = csta->channel + ic->arg; 1718 if (chanp->debug & 1) 1719 link_debug(chanp, 1, "REDIR"); 1720 memcpy(&chanp->setup, &ic->parm.setup, sizeof(setup_parm)); 1721 FsmEvent(&chanp->fi, EV_REDIR, NULL); 1722 break; 1723 1724 /* protocol specific io commands */ 1725 case (ISDN_CMD_PROT_IO): 1726 for (st = csta->stlist; st; st = st->next) 1727 if (st->protocol == (ic->arg & 0xFF)) 1728 return(st->lli.l4l3_proto(st, ic)); 1729 return(-EINVAL); 1730 break; 1731 default: 1732 if (csta->auxcmd) 1733 return(csta->auxcmd(csta, ic)); 1734 return(-EINVAL); 1735 } 1736 return (0); 1737} 1738 1739int 1740HiSax_writebuf_skb(int id, int chan, int ack, struct sk_buff *skb) 1741{ 1742 struct IsdnCardState *csta = hisax_findcard(id); 1743 struct Channel *chanp; 1744 struct PStack *st; 1745 int len = skb->len; 1746 struct sk_buff *nskb; 1747 1748 if (!csta) { 1749 printk(KERN_ERR 1750 "HiSax: if_sendbuf called with invalid driverId!\n"); 1751 return -ENODEV; 1752 } 1753 chanp = csta->channel + chan; 1754 st = chanp->b_st; 1755 if (!chanp->data_open) { 1756 link_debug(chanp, 1, "writebuf: channel not open"); 1757 return -EIO; 1758 } 1759 if (len > MAX_DATA_SIZE) { 1760 link_debug(chanp, 1, "writebuf: packet too large (%d bytes)", len); 1761 printk(KERN_WARNING "HiSax_writebuf: packet too large (%d bytes) !\n", 1762 len); 1763 return -EINVAL; 1764 } 1765 if (len) { 1766 if ((len + chanp->bcs->tx_cnt) > MAX_DATA_MEM) { 1767 /* Must return 0 here, since this is not an error 1768 * but a temporary lack of resources. 1769 */ 1770 if (chanp->debug & 0x800) 1771 link_debug(chanp, 1, "writebuf: no buffers for %d bytes", len); 1772 return 0; 1773 } else if (chanp->debug & 0x800) 1774 link_debug(chanp, 1, "writebuf %d/%d/%d", len, chanp->bcs->tx_cnt,MAX_DATA_MEM); 1775 nskb = skb_clone(skb, GFP_ATOMIC); 1776 if (nskb) { 1777 nskb->truesize = nskb->len; 1778 if (!ack) 1779 nskb->pkt_type = PACKET_NOACK; 1780 if (chanp->l2_active_protocol == ISDN_PROTO_L2_X75I) 1781 st->l3.l3l2(st, DL_DATA | REQUEST, nskb); 1782 else { 1783 chanp->bcs->tx_cnt += len; 1784 st->l2.l2l1(st, PH_DATA | REQUEST, nskb); 1785 } 1786 dev_kfree_skb(skb); 1787 } else 1788 len = 0; 1789 } 1790 return (len); 1791} 1792