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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / isdn / hisax / callc.c
blob475b1a020003fcb986de41f9fbf8d56f5167a9e5
1 /* $Id: callc.c,v 2.59.2.4 2004/02/11 13:21:32 keil 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/init.h>
21 #include "hisax.h"
22 #include <linux/isdn/capicmd.h>
23
24 const char *lli_revision = "$Revision: 2.59.2.4 $";
25
26 extern struct IsdnCard cards[];
27
28 static int init_b_st(struct Channel *chanp, int incoming);
29 static void release_b_st(struct Channel *chanp);
30
31 static struct Fsm callcfsm;
32 static int chancount;
33
34 /* experimental REJECT after ALERTING for CALLBACK to beat the 4s delay */
35 #define ALERT_REJECT 0
36
37 /* Value to delay the sending of the first B-channel paket after CONNECT
38 * here is no value given by ITU, but experience shows that 300 ms will
39 * work on many networks, if you or your other side is behind local exchanges
40 * a greater value may be recommented. If the delay is to short the first paket
41 * will be lost and autodetect on many comercial routers goes wrong !
42 * You can adjust this value on runtime with
43 * hisaxctrl <id> 2 <value>
44 * value is in milliseconds
45 */
46 #define DEFAULT_B_DELAY 300
47
48 /* Flags for remembering action done in lli */
49
50 #define FLG_START_B 0
51
52 /*
53 * Find card with given driverId
54 */
55 static inline struct IsdnCardState *
56 hisax_findcard(int driverid)
57 {
58 int i;
59
60 for (i = 0; i < nrcards; i++)
61 if (cards[i].cs)
62 if (cards[i].cs->myid == driverid)
63 return (cards[i].cs);
64 return (struct IsdnCardState *) 0;
65 }
66
67 static void
68 link_debug(struct Channel *chanp, int direction, char *fmt, ...)
69 {
70 va_list args;
71 char tmp[16];
72
73 va_start(args, fmt);
74 sprintf(tmp, "Ch%d %s ", chanp->chan,
75 direction ? "LL->HL" : "HL->LL");
76 VHiSax_putstatus(chanp->cs, tmp, fmt, args);
77 va_end(args);
78 }
79
80 enum {
81 ST_NULL, /* 0 inactive */
82 ST_OUT_DIAL, /* 1 outgoing, SETUP send; awaiting confirm */
83 ST_IN_WAIT_LL, /* 2 incoming call received; wait for LL confirm */
84 ST_IN_ALERT_SENT, /* 3 incoming call received; ALERT send */
85 ST_IN_WAIT_CONN_ACK, /* 4 incoming CONNECT send; awaiting CONN_ACK */
86 ST_WAIT_BCONN, /* 5 CONNECT/CONN_ACK received, awaiting b-channel prot. estbl. */
87 ST_ACTIVE, /* 6 active, b channel prot. established */
88 ST_WAIT_BRELEASE, /* 7 call clear. (initiator), awaiting b channel prot. rel. */
89 ST_WAIT_BREL_DISC, /* 8 call clear. (receiver), DISCONNECT req. received */
90 ST_WAIT_DCOMMAND, /* 9 call clear. (receiver), awaiting DCHANNEL message */
91 ST_WAIT_DRELEASE, /* 10 DISCONNECT sent, awaiting RELEASE */
92 ST_WAIT_D_REL_CNF, /* 11 RELEASE sent, awaiting RELEASE confirm */
93 ST_IN_PROCEED_SEND, /* 12 incoming call, proceeding send */
94 };
95
96
97 #define STATE_COUNT (ST_IN_PROCEED_SEND + 1)
98
99 static char *strState[] =
100 {
101 "ST_NULL",
102 "ST_OUT_DIAL",
103 "ST_IN_WAIT_LL",
104 "ST_IN_ALERT_SENT",
105 "ST_IN_WAIT_CONN_ACK",
106 "ST_WAIT_BCONN",
107 "ST_ACTIVE",
108 "ST_WAIT_BRELEASE",
109 "ST_WAIT_BREL_DISC",
110 "ST_WAIT_DCOMMAND",
111 "ST_WAIT_DRELEASE",
112 "ST_WAIT_D_REL_CNF",
113 "ST_IN_PROCEED_SEND",
114 };
115
116 enum {
117 EV_DIAL, /* 0 */
118 EV_SETUP_CNF, /* 1 */
119 EV_ACCEPTB, /* 2 */
120 EV_DISCONNECT_IND, /* 3 */
121 EV_RELEASE, /* 4 */
122 EV_LEASED, /* 5 */
123 EV_LEASED_REL, /* 6 */
124 EV_SETUP_IND, /* 7 */
125 EV_ACCEPTD, /* 8 */
126 EV_SETUP_CMPL_IND, /* 9 */
127 EV_BC_EST, /* 10 */
128 EV_WRITEBUF, /* 11 */
129 EV_HANGUP, /* 12 */
130 EV_BC_REL, /* 13 */
131 EV_CINF, /* 14 */
132 EV_SUSPEND, /* 15 */
133 EV_RESUME, /* 16 */
134 EV_NOSETUP_RSP, /* 17 */
135 EV_SETUP_ERR, /* 18 */
136 EV_CONNECT_ERR, /* 19 */
137 EV_PROCEED, /* 20 */
138 EV_ALERT, /* 21 */
139 EV_REDIR, /* 22 */
140 };
141
142 #define EVENT_COUNT (EV_REDIR + 1)
143
144 static char *strEvent[] =
145 {
146 "EV_DIAL",
147 "EV_SETUP_CNF",
148 "EV_ACCEPTB",
149 "EV_DISCONNECT_IND",
150 "EV_RELEASE",
151 "EV_LEASED",
152 "EV_LEASED_REL",
153 "EV_SETUP_IND",
154 "EV_ACCEPTD",
155 "EV_SETUP_CMPL_IND",
156 "EV_BC_EST",
157 "EV_WRITEBUF",
158 "EV_HANGUP",
159 "EV_BC_REL",
160 "EV_CINF",
161 "EV_SUSPEND",
162 "EV_RESUME",
163 "EV_NOSETUP_RSP",
164 "EV_SETUP_ERR",
165 "EV_CONNECT_ERR",
166 "EV_PROCEED",
167 "EV_ALERT",
168 "EV_REDIR",
169 };
170
171
172 static inline void
173 HL_LL(struct Channel *chanp, int command)
174 {
175 isdn_ctrl ic;
176
177 ic.driver = chanp->cs->myid;
178 ic.command = command;
179 ic.arg = chanp->chan;
180 chanp->cs->iif.statcallb(&ic);
181 }
182
183 static inline void
184 lli_deliver_cause(struct Channel *chanp)
185 {
186 isdn_ctrl ic;
187
188 if (!chanp->proc)
189 return;
190 if (chanp->proc->para.cause == NO_CAUSE)
191 return;
192 ic.driver = chanp->cs->myid;
193 ic.command = ISDN_STAT_CAUSE;
194 ic.arg = chanp->chan;
195 if (chanp->cs->protocol == ISDN_PTYPE_EURO)
196 sprintf(ic.parm.num, "E%02X%02X", chanp->proc->para.loc & 0x7f,
197 chanp->proc->para.cause & 0x7f);
198 else
199 sprintf(ic.parm.num, "%02X%02X", chanp->proc->para.loc & 0x7f,
200 chanp->proc->para.cause & 0x7f);
201 chanp->cs->iif.statcallb(&ic);
202 }
203
204 static inline void
205 lli_close(struct FsmInst *fi)
206 {
207 struct Channel *chanp = fi->userdata;
208
209 FsmChangeState(fi, ST_NULL);
210 chanp->Flags = 0;
211 chanp->cs->cardmsg(chanp->cs, MDL_INFO_REL, (void *) (long)chanp->chan);
212 }
213
214 static void
215 lli_leased_in(struct FsmInst *fi, int event, void *arg)
216 {
217 struct Channel *chanp = fi->userdata;
218 isdn_ctrl ic;
219 int ret;
220
221 if (!chanp->leased)
222 return;
223 chanp->cs->cardmsg(chanp->cs, MDL_INFO_SETUP, (void *) (long)chanp->chan);
224 FsmChangeState(fi, ST_IN_WAIT_LL);
225 if (chanp->debug & 1)
226 link_debug(chanp, 0, "STAT_ICALL_LEASED");
227 ic.driver = chanp->cs->myid;
228 ic.command = ((chanp->chan < 2) ? ISDN_STAT_ICALL : ISDN_STAT_ICALLW);
229 ic.arg = chanp->chan;
230 ic.parm.setup.si1 = 7;
231 ic.parm.setup.si2 = 0;
232 ic.parm.setup.plan = 0;
233 ic.parm.setup.screen = 0;
234 sprintf(ic.parm.setup.eazmsn,"%d", chanp->chan + 1);
235 sprintf(ic.parm.setup.phone,"LEASED%d", chanp->cs->myid);
236 ret = chanp->cs->iif.statcallb(&ic);
237 if (chanp->debug & 1)
238 link_debug(chanp, 1, "statcallb ret=%d", ret);
239 if (!ret) {
240 chanp->cs->cardmsg(chanp->cs, MDL_INFO_REL, (void *) (long)chanp->chan);
241 FsmChangeState(fi, ST_NULL);
242 }
243 }
244
245
246 /*
247 * Dial out
248 */
249 static void
250 lli_init_bchan_out(struct FsmInst *fi, int event, void *arg)
251 {
252 struct Channel *chanp = fi->userdata;
253
254 FsmChangeState(fi, ST_WAIT_BCONN);
255 if (chanp->debug & 1)
256 link_debug(chanp, 0, "STAT_DCONN");
257 HL_LL(chanp, ISDN_STAT_DCONN);
258 init_b_st(chanp, 0);
259 chanp->b_st->lli.l4l3(chanp->b_st, DL_ESTABLISH | REQUEST, NULL);
260 }
261
262 static void
263 lli_prep_dialout(struct FsmInst *fi, int event, void *arg)
264 {
265 struct Channel *chanp = fi->userdata;
266
267 FsmDelTimer(&chanp->drel_timer, 60);
268 FsmDelTimer(&chanp->dial_timer, 73);
269 chanp->l2_active_protocol = chanp->l2_protocol;
270 chanp->incoming = 0;
271 chanp->cs->cardmsg(chanp->cs, MDL_INFO_SETUP, (void *) (long)chanp->chan);
272 if (chanp->leased) {
273 lli_init_bchan_out(fi, event, arg);
274 } else {
275 FsmChangeState(fi, ST_OUT_DIAL);
276 chanp->d_st->lli.l4l3(chanp->d_st, CC_SETUP | REQUEST, chanp);
277 }
278 }
279
280 static void
281 lli_resume(struct FsmInst *fi, int event, void *arg)
282 {
283 struct Channel *chanp = fi->userdata;
284
285 FsmDelTimer(&chanp->drel_timer, 60);
286 FsmDelTimer(&chanp->dial_timer, 73);
287 chanp->l2_active_protocol = chanp->l2_protocol;
288 chanp->incoming = 0;
289 chanp->cs->cardmsg(chanp->cs, MDL_INFO_SETUP, (void *) (long)chanp->chan);
290 if (chanp->leased) {
291 lli_init_bchan_out(fi, event, arg);
292 } else {
293 FsmChangeState(fi, ST_OUT_DIAL);
294 chanp->d_st->lli.l4l3(chanp->d_st, CC_RESUME | REQUEST, chanp);
295 }
296 }
297
298 static void
299 lli_go_active(struct FsmInst *fi, int event, void *arg)
300 {
301 struct Channel *chanp = fi->userdata;
302 isdn_ctrl ic;
303
304
305 FsmChangeState(fi, ST_ACTIVE);
306 chanp->data_open = !0;
307 if (chanp->bcs->conmsg)
308 strcpy(ic.parm.num, chanp->bcs->conmsg);
309 else
310 ic.parm.num[0] = 0;
311 if (chanp->debug & 1)
312 link_debug(chanp, 0, "STAT_BCONN %s", ic.parm.num);
313 ic.driver = chanp->cs->myid;
314 ic.command = ISDN_STAT_BCONN;
315 ic.arg = chanp->chan;
316 chanp->cs->iif.statcallb(&ic);
317 chanp->cs->cardmsg(chanp->cs, MDL_INFO_CONN, (void *) (long)chanp->chan);
318 }
319
320
321 /*
322 * RESUME
323 */
324
325 /* incoming call */
326
327 static void
328 lli_deliver_call(struct FsmInst *fi, int event, void *arg)
329 {
330 struct Channel *chanp = fi->userdata;
331 isdn_ctrl ic;
332 int ret;
333
334 chanp->cs->cardmsg(chanp->cs, MDL_INFO_SETUP, (void *) (long)chanp->chan);
335 /*
336 * Report incoming calls only once to linklevel, use CallFlags
337 * which is set to 3 with each broadcast message in isdnl1.c
338 * and resetted if a interface answered the STAT_ICALL.
339 */
340 if (1) { /* for only one TEI */
341 FsmChangeState(fi, ST_IN_WAIT_LL);
342 if (chanp->debug & 1)
343 link_debug(chanp, 0, (chanp->chan < 2) ? "STAT_ICALL" : "STAT_ICALLW");
344 ic.driver = chanp->cs->myid;
345 ic.command = ((chanp->chan < 2) ? ISDN_STAT_ICALL : ISDN_STAT_ICALLW);
346
347 ic.arg = chanp->chan;
348 /*
349 * No need to return "unknown" for calls without OAD,
350 * cause that's handled in linklevel now (replaced by '0')
351 */
352 memcpy(&ic.parm.setup, &chanp->proc->para.setup, sizeof(setup_parm));
353 ret = chanp->cs->iif.statcallb(&ic);
354 if (chanp->debug & 1)
355 link_debug(chanp, 1, "statcallb ret=%d", ret);
356
357 switch (ret) {
358 case 1: /* OK, someone likes this call */
359 FsmDelTimer(&chanp->drel_timer, 61);
360 FsmChangeState(fi, ST_IN_ALERT_SENT);
361 chanp->d_st->lli.l4l3(chanp->d_st, CC_ALERTING | REQUEST, chanp->proc);
362 break;
363 case 5: /* direct redirect */
364 case 4: /* Proceeding desired */
365 FsmDelTimer(&chanp->drel_timer, 61);
366 FsmChangeState(fi, ST_IN_PROCEED_SEND);
367 chanp->d_st->lli.l4l3(chanp->d_st, CC_PROCEED_SEND | REQUEST, chanp->proc);
368 if (ret == 5) {
369 memcpy(&chanp->setup, &ic.parm.setup, sizeof(setup_parm));
370 chanp->d_st->lli.l4l3(chanp->d_st, CC_REDIR | REQUEST, chanp->proc);
371 }
372 break;
373 case 2: /* Rejecting Call */
374 break;
375 case 3: /* incomplete number */
376 FsmDelTimer(&chanp->drel_timer, 61);
377 chanp->d_st->lli.l4l3(chanp->d_st, CC_MORE_INFO | REQUEST, chanp->proc);
378 break;
379 case 0: /* OK, nobody likes this call */
380 default: /* statcallb problems */
381 chanp->d_st->lli.l4l3(chanp->d_st, CC_IGNORE | REQUEST, chanp->proc);
382 chanp->cs->cardmsg(chanp->cs, MDL_INFO_REL, (void *) (long)chanp->chan);
383 FsmChangeState(fi, ST_NULL);
384 break;
385 }
386 } else {
387 chanp->d_st->lli.l4l3(chanp->d_st, CC_IGNORE | REQUEST, chanp->proc);
388 chanp->cs->cardmsg(chanp->cs, MDL_INFO_REL, (void *) (long)chanp->chan);
389 }
390 }
391
392 static void
393 lli_send_dconnect(struct FsmInst *fi, int event, void *arg)
394 {
395 struct Channel *chanp = fi->userdata;
396
397 FsmChangeState(fi, ST_IN_WAIT_CONN_ACK);
398 chanp->d_st->lli.l4l3(chanp->d_st, CC_SETUP | RESPONSE, chanp->proc);
399 }
400
401 static void
402 lli_send_alert(struct FsmInst *fi, int event, void *arg)
403 {
404 struct Channel *chanp = fi->userdata;
405
406 FsmChangeState(fi, ST_IN_ALERT_SENT);
407 chanp->d_st->lli.l4l3(chanp->d_st, CC_ALERTING | REQUEST, chanp->proc);
408 }
409
410 static void
411 lli_send_redir(struct FsmInst *fi, int event, void *arg)
412 {
413 struct Channel *chanp = fi->userdata;
414
415 chanp->d_st->lli.l4l3(chanp->d_st, CC_REDIR | REQUEST, chanp->proc);
416 }
417
418 static void
419 lli_init_bchan_in(struct FsmInst *fi, int event, void *arg)
420 {
421 struct Channel *chanp = fi->userdata;
422
423 FsmChangeState(fi, ST_WAIT_BCONN);
424 if (chanp->debug & 1)
425 link_debug(chanp, 0, "STAT_DCONN");
426 HL_LL(chanp, ISDN_STAT_DCONN);
427 chanp->l2_active_protocol = chanp->l2_protocol;
428 chanp->incoming = !0;
429 init_b_st(chanp, !0);
430 chanp->b_st->lli.l4l3(chanp->b_st, DL_ESTABLISH | REQUEST, NULL);
431 }
432
433 static void
434 lli_setup_rsp(struct FsmInst *fi, int event, void *arg)
435 {
436 struct Channel *chanp = fi->userdata;
437
438 if (chanp->leased) {
439 lli_init_bchan_in(fi, event, arg);
440 } else {
441 FsmChangeState(fi, ST_IN_WAIT_CONN_ACK);
442 #ifdef WANT_ALERT
443 chanp->d_st->lli.l4l3(chanp->d_st, CC_ALERTING | REQUEST, chanp->proc);
444 #endif
445 chanp->d_st->lli.l4l3(chanp->d_st, CC_SETUP | RESPONSE, chanp->proc);
446 }
447 }
448
449 /* Call suspend */
450
451 static void
452 lli_suspend(struct FsmInst *fi, int event, void *arg)
453 {
454 struct Channel *chanp = fi->userdata;
455
456 chanp->d_st->lli.l4l3(chanp->d_st, CC_SUSPEND | REQUEST, chanp->proc);
457 }
458
459 /* Call clearing */
460
461 static void
462 lli_leased_hup(struct FsmInst *fi, struct Channel *chanp)
463 {
464 isdn_ctrl ic;
465
466 ic.driver = chanp->cs->myid;
467 ic.command = ISDN_STAT_CAUSE;
468 ic.arg = chanp->chan;
469 sprintf(ic.parm.num, "L0010");
470 chanp->cs->iif.statcallb(&ic);
471 if (chanp->debug & 1)
472 link_debug(chanp, 0, "STAT_DHUP");
473 HL_LL(chanp, ISDN_STAT_DHUP);
474 lli_close(fi);
475 }
476
477 static void
478 lli_disconnect_req(struct FsmInst *fi, int event, void *arg)
479 {
480 struct Channel *chanp = fi->userdata;
481
482 if (chanp->leased) {
483 lli_leased_hup(fi, chanp);
484 } else {
485 FsmChangeState(fi, ST_WAIT_DRELEASE);
486 if (chanp->proc)
487 chanp->proc->para.cause = 0x10; /* Normal Call Clearing */
488 chanp->d_st->lli.l4l3(chanp->d_st, CC_DISCONNECT | REQUEST,
489 chanp->proc);
490 }
491 }
492
493 static void
494 lli_disconnect_reject(struct FsmInst *fi, int event, void *arg)
495 {
496 struct Channel *chanp = fi->userdata;
497
498 if (chanp->leased) {
499 lli_leased_hup(fi, chanp);
500 } else {
501 FsmChangeState(fi, ST_WAIT_DRELEASE);
502 if (chanp->proc)
503 chanp->proc->para.cause = 0x15; /* Call Rejected */
504 chanp->d_st->lli.l4l3(chanp->d_st, CC_DISCONNECT | REQUEST,
505 chanp->proc);
506 }
507 }
508
509 static void
510 lli_dhup_close(struct FsmInst *fi, int event, void *arg)
511 {
512 struct Channel *chanp = fi->userdata;
513
514 if (chanp->leased) {
515 lli_leased_hup(fi, chanp);
516 } else {
517 if (chanp->debug & 1)
518 link_debug(chanp, 0, "STAT_DHUP");
519 lli_deliver_cause(chanp);
520 HL_LL(chanp, ISDN_STAT_DHUP);
521 lli_close(fi);
522 }
523 }
524
525 static void
526 lli_reject_req(struct FsmInst *fi, int event, void *arg)
527 {
528 struct Channel *chanp = fi->userdata;
529
530 if (chanp->leased) {
531 lli_leased_hup(fi, chanp);
532 return;
533 }
534 #ifndef ALERT_REJECT
535 if (chanp->proc)
536 chanp->proc->para.cause = 0x15; /* Call Rejected */
537 chanp->d_st->lli.l4l3(chanp->d_st, CC_REJECT | REQUEST, chanp->proc);
538 lli_dhup_close(fi, event, arg);
539 #else
540 FsmRestartTimer(&chanp->drel_timer, 40, EV_HANGUP, NULL, 63);
541 FsmChangeState(fi, ST_IN_ALERT_SENT);
542 chanp->d_st->lli.l4l3(chanp->d_st, CC_ALERTING | REQUEST, chanp->proc);
543 #endif
544 }
545
546 static void
547 lli_disconn_bchan(struct FsmInst *fi, int event, void *arg)
548 {
549 struct Channel *chanp = fi->userdata;
550
551 chanp->data_open = 0;
552 FsmChangeState(fi, ST_WAIT_BRELEASE);
553 chanp->b_st->lli.l4l3(chanp->b_st, DL_RELEASE | REQUEST, NULL);
554 }
555
556 static void
557 lli_start_disc(struct FsmInst *fi, int event, void *arg)
558 {
559 struct Channel *chanp = fi->userdata;
560
561 if (chanp->leased) {
562 lli_leased_hup(fi, chanp);
563 } else {
564 lli_disconnect_req(fi, event, arg);
565 }
566 }
567
568 static void
569 lli_rel_b_disc(struct FsmInst *fi, int event, void *arg)
570 {
571 struct Channel *chanp = fi->userdata;
572
573 release_b_st(chanp);
574 lli_start_disc(fi, event, arg);
575 }
576
577 static void
578 lli_bhup_disc(struct FsmInst *fi, int event, void *arg)
579 {
580 struct Channel *chanp = fi->userdata;
581
582 if (chanp->debug & 1)
583 link_debug(chanp, 0, "STAT_BHUP");
584 HL_LL(chanp, ISDN_STAT_BHUP);
585 lli_rel_b_disc(fi, event, arg);
586 }
587
588 static void
589 lli_bhup_rel_b(struct FsmInst *fi, int event, void *arg)
590 {
591 struct Channel *chanp = fi->userdata;
592
593 FsmChangeState(fi, ST_WAIT_DCOMMAND);
594 chanp->data_open = 0;
595 if (chanp->debug & 1)
596 link_debug(chanp, 0, "STAT_BHUP");
597 HL_LL(chanp, ISDN_STAT_BHUP);
598 release_b_st(chanp);
599 }
600
601 static void
602 lli_release_bchan(struct FsmInst *fi, int event, void *arg)
603 {
604 struct Channel *chanp = fi->userdata;
605
606 chanp->data_open = 0;
607 FsmChangeState(fi, ST_WAIT_BREL_DISC);
608 chanp->b_st->lli.l4l3(chanp->b_st, DL_RELEASE | REQUEST, NULL);
609 }
610
611
612 static void
613 lli_rel_b_dhup(struct FsmInst *fi, int event, void *arg)
614 {
615 struct Channel *chanp = fi->userdata;
616
617 release_b_st(chanp);
618 lli_dhup_close(fi, event, arg);
619 }
620
621 static void
622 lli_bhup_dhup(struct FsmInst *fi, int event, void *arg)
623 {
624 struct Channel *chanp = fi->userdata;
625
626 if (chanp->debug & 1)
627 link_debug(chanp, 0, "STAT_BHUP");
628 HL_LL(chanp, ISDN_STAT_BHUP);
629 lli_rel_b_dhup(fi, event, arg);
630 }
631
632 static void
633 lli_abort(struct FsmInst *fi, int event, void *arg)
634 {
635 struct Channel *chanp = fi->userdata;
636
637 chanp->data_open = 0;
638 chanp->b_st->lli.l4l3(chanp->b_st, DL_RELEASE | REQUEST, NULL);
639 lli_bhup_dhup(fi, event, arg);
640 }
641
642 static void
643 lli_release_req(struct FsmInst *fi, int event, void *arg)
644 {
645 struct Channel *chanp = fi->userdata;
646
647 if (chanp->leased) {
648 lli_leased_hup(fi, chanp);
649 } else {
650 FsmChangeState(fi, ST_WAIT_D_REL_CNF);
651 chanp->d_st->lli.l4l3(chanp->d_st, CC_RELEASE | REQUEST,
652 chanp->proc);
653 }
654 }
655
656 static void
657 lli_rel_b_release_req(struct FsmInst *fi, int event, void *arg)
658 {
659 struct Channel *chanp = fi->userdata;
660
661 release_b_st(chanp);
662 lli_release_req(fi, event, arg);
663 }
664
665 static void
666 lli_bhup_release_req(struct FsmInst *fi, int event, void *arg)
667 {
668 struct Channel *chanp = fi->userdata;
669
670 if (chanp->debug & 1)
671 link_debug(chanp, 0, "STAT_BHUP");
672 HL_LL(chanp, ISDN_STAT_BHUP);
673 lli_rel_b_release_req(fi, event, arg);
674 }
675
676
677 /* processing charge info */
678 static void
679 lli_charge_info(struct FsmInst *fi, int event, void *arg)
680 {
681 struct Channel *chanp = fi->userdata;
682 isdn_ctrl ic;
683
684 ic.driver = chanp->cs->myid;
685 ic.command = ISDN_STAT_CINF;
686 ic.arg = chanp->chan;
687 sprintf(ic.parm.num, "%d", chanp->proc->para.chargeinfo);
688 chanp->cs->iif.statcallb(&ic);
689 }
690
691 /* error procedures */
692
693 static void
694 lli_dchan_not_ready(struct FsmInst *fi, int event, void *arg)
695 {
696 struct Channel *chanp = fi->userdata;
697
698 if (chanp->debug & 1)
699 link_debug(chanp, 0, "STAT_DHUP");
700 HL_LL(chanp, ISDN_STAT_DHUP);
701 }
702
703 static void
704 lli_no_setup_rsp(struct FsmInst *fi, int event, void *arg)
705 {
706 struct Channel *chanp = fi->userdata;
707
708 if (chanp->debug & 1)
709 link_debug(chanp, 0, "STAT_DHUP");
710 HL_LL(chanp, ISDN_STAT_DHUP);
711 lli_close(fi);
712 }
713
714 static void
715 lli_error(struct FsmInst *fi, int event, void *arg)
716 {
717 FsmChangeState(fi, ST_WAIT_DRELEASE);
718 }
719
720 static void
721 lli_failure_l(struct FsmInst *fi, int event, void *arg)
722 {
723 struct Channel *chanp = fi->userdata;
724 isdn_ctrl ic;
725
726 FsmChangeState(fi, ST_NULL);
727 ic.driver = chanp->cs->myid;
728 ic.command = ISDN_STAT_CAUSE;
729 ic.arg = chanp->chan;
730 sprintf(ic.parm.num, "L%02X%02X", 0, 0x2f);
731 chanp->cs->iif.statcallb(&ic);
732 HL_LL(chanp, ISDN_STAT_DHUP);
733 chanp->Flags = 0;
734 chanp->cs->cardmsg(chanp->cs, MDL_INFO_REL, (void *) (long)chanp->chan);
735 }
736
737 static void
738 lli_rel_b_fail(struct FsmInst *fi, int event, void *arg)
739 {
740 struct Channel *chanp = fi->userdata;
741
742 release_b_st(chanp);
743 lli_failure_l(fi, event, arg);
744 }
745
746 static void
747 lli_bhup_fail(struct FsmInst *fi, int event, void *arg)
748 {
749 struct Channel *chanp = fi->userdata;
750
751 if (chanp->debug & 1)
752 link_debug(chanp, 0, "STAT_BHUP");
753 HL_LL(chanp, ISDN_STAT_BHUP);
754 lli_rel_b_fail(fi, event, arg);
755 }
756
757 static void
758 lli_failure_a(struct FsmInst *fi, int event, void *arg)
759 {
760 struct Channel *chanp = fi->userdata;
761
762 chanp->data_open = 0;
763 chanp->b_st->lli.l4l3(chanp->b_st, DL_RELEASE | REQUEST, NULL);
764 lli_bhup_fail(fi, event, arg);
765 }
766
767 /* *INDENT-OFF* */
768 static struct FsmNode fnlist[] __initdata =
769 {
770 {ST_NULL, EV_DIAL, lli_prep_dialout},
771 {ST_NULL, EV_RESUME, lli_resume},
772 {ST_NULL, EV_SETUP_IND, lli_deliver_call},
773 {ST_NULL, EV_LEASED, lli_leased_in},
774 {ST_OUT_DIAL, EV_SETUP_CNF, lli_init_bchan_out},
775 {ST_OUT_DIAL, EV_HANGUP, lli_disconnect_req},
776 {ST_OUT_DIAL, EV_DISCONNECT_IND, lli_release_req},
777 {ST_OUT_DIAL, EV_RELEASE, lli_dhup_close},
778 {ST_OUT_DIAL, EV_NOSETUP_RSP, lli_no_setup_rsp},
779 {ST_OUT_DIAL, EV_SETUP_ERR, lli_error},
780 {ST_IN_WAIT_LL, EV_LEASED_REL, lli_failure_l},
781 {ST_IN_WAIT_LL, EV_ACCEPTD, lli_setup_rsp},
782 {ST_IN_WAIT_LL, EV_HANGUP, lli_reject_req},
783 {ST_IN_WAIT_LL, EV_DISCONNECT_IND, lli_release_req},
784 {ST_IN_WAIT_LL, EV_RELEASE, lli_dhup_close},
785 {ST_IN_WAIT_LL, EV_SETUP_IND, lli_deliver_call},
786 {ST_IN_WAIT_LL, EV_SETUP_ERR, lli_error},
787 {ST_IN_ALERT_SENT, EV_SETUP_CMPL_IND, lli_init_bchan_in},
788 {ST_IN_ALERT_SENT, EV_ACCEPTD, lli_send_dconnect},
789 {ST_IN_ALERT_SENT, EV_HANGUP, lli_disconnect_reject},
790 {ST_IN_ALERT_SENT, EV_DISCONNECT_IND, lli_release_req},
791 {ST_IN_ALERT_SENT, EV_RELEASE, lli_dhup_close},
792 {ST_IN_ALERT_SENT, EV_REDIR, lli_send_redir},
793 {ST_IN_PROCEED_SEND, EV_REDIR, lli_send_redir},
794 {ST_IN_PROCEED_SEND, EV_ALERT, lli_send_alert},
795 {ST_IN_PROCEED_SEND, EV_ACCEPTD, lli_send_dconnect},
796 {ST_IN_PROCEED_SEND, EV_HANGUP, lli_disconnect_reject},
797 {ST_IN_PROCEED_SEND, EV_DISCONNECT_IND, lli_dhup_close},
798 {ST_IN_ALERT_SENT, EV_RELEASE, lli_dhup_close},
799 {ST_IN_WAIT_CONN_ACK, EV_SETUP_CMPL_IND, lli_init_bchan_in},
800 {ST_IN_WAIT_CONN_ACK, EV_HANGUP, lli_disconnect_req},
801 {ST_IN_WAIT_CONN_ACK, EV_DISCONNECT_IND, lli_release_req},
802 {ST_IN_WAIT_CONN_ACK, EV_RELEASE, lli_dhup_close},
803 {ST_IN_WAIT_CONN_ACK, EV_CONNECT_ERR, lli_error},
804 {ST_WAIT_BCONN, EV_BC_EST, lli_go_active},
805 {ST_WAIT_BCONN, EV_BC_REL, lli_rel_b_disc},
806 {ST_WAIT_BCONN, EV_HANGUP, lli_rel_b_disc},
807 {ST_WAIT_BCONN, EV_DISCONNECT_IND, lli_rel_b_release_req},
808 {ST_WAIT_BCONN, EV_RELEASE, lli_rel_b_dhup},
809 {ST_WAIT_BCONN, EV_LEASED_REL, lli_rel_b_fail},
810 {ST_WAIT_BCONN, EV_CINF, lli_charge_info},
811 {ST_ACTIVE, EV_CINF, lli_charge_info},
812 {ST_ACTIVE, EV_BC_REL, lli_bhup_rel_b},
813 {ST_ACTIVE, EV_SUSPEND, lli_suspend},
814 {ST_ACTIVE, EV_HANGUP, lli_disconn_bchan},
815 {ST_ACTIVE, EV_DISCONNECT_IND, lli_release_bchan},
816 {ST_ACTIVE, EV_RELEASE, lli_abort},
817 {ST_ACTIVE, EV_LEASED_REL, lli_failure_a},
818 {ST_WAIT_BRELEASE, EV_BC_REL, lli_bhup_disc},
819 {ST_WAIT_BRELEASE, EV_DISCONNECT_IND, lli_bhup_release_req},
820 {ST_WAIT_BRELEASE, EV_RELEASE, lli_bhup_dhup},
821 {ST_WAIT_BRELEASE, EV_LEASED_REL, lli_bhup_fail},
822 {ST_WAIT_BREL_DISC, EV_BC_REL, lli_bhup_release_req},
823 {ST_WAIT_BREL_DISC, EV_RELEASE, lli_bhup_dhup},
824 {ST_WAIT_DCOMMAND, EV_HANGUP, lli_start_disc},
825 {ST_WAIT_DCOMMAND, EV_DISCONNECT_IND, lli_release_req},
826 {ST_WAIT_DCOMMAND, EV_RELEASE, lli_dhup_close},
827 {ST_WAIT_DCOMMAND, EV_LEASED_REL, lli_failure_l},
828 {ST_WAIT_DRELEASE, EV_RELEASE, lli_dhup_close},
829 {ST_WAIT_DRELEASE, EV_DIAL, lli_dchan_not_ready},
830 /* ETS 300-104 16.1 */
831 {ST_WAIT_D_REL_CNF, EV_RELEASE, lli_dhup_close},
832 {ST_WAIT_D_REL_CNF, EV_DIAL, lli_dchan_not_ready},
833 };
834 /* *INDENT-ON* */
835
836 int __init
837 CallcNew(void)
838 {
839 callcfsm.state_count = STATE_COUNT;
840 callcfsm.event_count = EVENT_COUNT;
841 callcfsm.strEvent = strEvent;
842 callcfsm.strState = strState;
843 return FsmNew(&callcfsm, fnlist, ARRAY_SIZE(fnlist));
844 }
845
846 void
847 CallcFree(void)
848 {
849 FsmFree(&callcfsm);
850 }
851
852 static void
853 release_b_st(struct Channel *chanp)
854 {
855 struct PStack *st = chanp->b_st;
856
857 if(test_and_clear_bit(FLG_START_B, &chanp->Flags)) {
858 chanp->bcs->BC_Close(chanp->bcs);
859 switch (chanp->l2_active_protocol) {
860 case (ISDN_PROTO_L2_X75I):
861 releasestack_isdnl2(st);
862 break;
863 case (ISDN_PROTO_L2_HDLC):
864 case (ISDN_PROTO_L2_HDLC_56K):
865 case (ISDN_PROTO_L2_TRANS):
866 case (ISDN_PROTO_L2_MODEM):
867 case (ISDN_PROTO_L2_FAX):
868 releasestack_transl2(st);
869 break;
870 }
871 }
872 }
873
874 static struct Channel
875 *selectfreechannel(struct PStack *st, int bch)
876 {
877 struct IsdnCardState *cs = st->l1.hardware;
878 struct Channel *chanp = st->lli.userdata;
879 int i;
880
881 if (test_bit(FLG_TWO_DCHAN, &cs->HW_Flags))
882 i=1;
883 else
884 i=0;
885
886 if (!bch) {
887 i = 2; /* virtual channel */
888 chanp += 2;
889 }
890
891 while (i < ((bch) ? cs->chanlimit : (2 + MAX_WAITING_CALLS))) {
892 if (chanp->fi.state == ST_NULL)
893 return (chanp);
894 chanp++;
895 i++;
896 }
897
898 if (bch) /* number of channels is limited */ {
899 i = 2; /* virtual channel */
900 chanp = st->lli.userdata;
901 chanp += i;
902 while (i < (2 + MAX_WAITING_CALLS)) {
903 if (chanp->fi.state == ST_NULL)
904 return (chanp);
905 chanp++;
906 i++;
907 }
908 }
909 return (NULL);
910 }
911
912 static void stat_redir_result(struct IsdnCardState *cs, int chan, ulong result)
913 { isdn_ctrl ic;
914
915 ic.driver = cs->myid;
916 ic.command = ISDN_STAT_REDIR;
917 ic.arg = chan;
918 ic.parm.num[0] = result;
919 cs->iif.statcallb(&ic);
920 } /* stat_redir_result */
921
922 static void
923 dchan_l3l4(struct PStack *st, int pr, void *arg)
924 {
925 struct l3_process *pc = arg;
926 struct IsdnCardState *cs = st->l1.hardware;
927 struct Channel *chanp;
928
929 if(!pc)
930 return;
931
932 if (pr == (CC_SETUP | INDICATION)) {
933 if (!(chanp = selectfreechannel(pc->st, pc->para.bchannel))) {
934 pc->para.cause = 0x11; /* User busy */
935 pc->st->lli.l4l3(pc->st, CC_REJECT | REQUEST, pc);
936 } else {
937 chanp->proc = pc;
938 pc->chan = chanp;
939 FsmEvent(&chanp->fi, EV_SETUP_IND, NULL);
940 }
941 return;
942 }
943 if (!(chanp = pc->chan))
944 return;
945
946 switch (pr) {
947 case (CC_MORE_INFO | INDICATION):
948 FsmEvent(&chanp->fi, EV_SETUP_IND, NULL);
949 break;
950 case (CC_DISCONNECT | INDICATION):
951 FsmEvent(&chanp->fi, EV_DISCONNECT_IND, NULL);
952 break;
953 case (CC_RELEASE | CONFIRM):
954 FsmEvent(&chanp->fi, EV_RELEASE, NULL);
955 break;
956 case (CC_SUSPEND | CONFIRM):
957 FsmEvent(&chanp->fi, EV_RELEASE, NULL);
958 break;
959 case (CC_RESUME | CONFIRM):
960 FsmEvent(&chanp->fi, EV_SETUP_CNF, NULL);
961 break;
962 case (CC_RESUME_ERR):
963 FsmEvent(&chanp->fi, EV_RELEASE, NULL);
964 break;
965 case (CC_RELEASE | INDICATION):
966 FsmEvent(&chanp->fi, EV_RELEASE, NULL);
967 break;
968 case (CC_SETUP_COMPL | INDICATION):
969 FsmEvent(&chanp->fi, EV_SETUP_CMPL_IND, NULL);
970 break;
971 case (CC_SETUP | CONFIRM):
972 FsmEvent(&chanp->fi, EV_SETUP_CNF, NULL);
973 break;
974 case (CC_CHARGE | INDICATION):
975 FsmEvent(&chanp->fi, EV_CINF, NULL);
976 break;
977 case (CC_NOSETUP_RSP):
978 FsmEvent(&chanp->fi, EV_NOSETUP_RSP, NULL);
979 break;
980 case (CC_SETUP_ERR):
981 FsmEvent(&chanp->fi, EV_SETUP_ERR, NULL);
982 break;
983 case (CC_CONNECT_ERR):
984 FsmEvent(&chanp->fi, EV_CONNECT_ERR, NULL);
985 break;
986 case (CC_RELEASE_ERR):
987 FsmEvent(&chanp->fi, EV_RELEASE, NULL);
988 break;
989 case (CC_PROCEED_SEND | INDICATION):
990 case (CC_PROCEEDING | INDICATION):
991 case (CC_ALERTING | INDICATION):
992 case (CC_PROGRESS | INDICATION):
993 case (CC_NOTIFY | INDICATION):
994 break;
995 case (CC_REDIR | INDICATION):
996 stat_redir_result(cs, chanp->chan, pc->redir_result);
997 break;
998 default:
999 if (chanp->debug & 0x800) {
1000 HiSax_putstatus(chanp->cs, "Ch",
1001 "%d L3->L4 unknown primitiv %#x",
1002 chanp->chan, pr);
1003 }
1004 }
1005 }
1006
1007 static void
1008 dummy_pstack(struct PStack *st, int pr, void *arg) {
1009 printk(KERN_WARNING"call to dummy_pstack pr=%04x arg %lx\n", pr, (long)arg);
1010 }
1011
1012 static int
1013 init_PStack(struct PStack **stp) {
1014 *stp = kmalloc(sizeof(struct PStack), GFP_ATOMIC);
1015 if (!*stp)
1016 return -ENOMEM;
1017 (*stp)->next = NULL;
1018 (*stp)->l1.l1l2 = dummy_pstack;
1019 (*stp)->l1.l1hw = dummy_pstack;
1020 (*stp)->l1.l1tei = dummy_pstack;
1021 (*stp)->l2.l2tei = dummy_pstack;
1022 (*stp)->l2.l2l1 = dummy_pstack;
1023 (*stp)->l2.l2l3 = dummy_pstack;
1024 (*stp)->l3.l3l2 = dummy_pstack;
1025 (*stp)->l3.l3ml3 = dummy_pstack;
1026 (*stp)->l3.l3l4 = dummy_pstack;
1027 (*stp)->lli.l4l3 = dummy_pstack;
1028 (*stp)->ma.layer = dummy_pstack;
1029 return 0;
1030 }
1031
1032 static int
1033 init_d_st(struct Channel *chanp)
1034 {
1035 struct PStack *st;
1036 struct IsdnCardState *cs = chanp->cs;
1037 char tmp[16];
1038 int err;
1039
1040 err = init_PStack(&chanp->d_st);
1041 if (err)
1042 return err;
1043 st = chanp->d_st;
1044 st->next = NULL;
1045 HiSax_addlist(cs, st);
1046 setstack_HiSax(st, cs);
1047 st->l2.sap = 0;
1048 st->l2.tei = -1;
1049 st->l2.flag = 0;
1050 test_and_set_bit(FLG_MOD128, &st->l2.flag);
1051 test_and_set_bit(FLG_LAPD, &st->l2.flag);
1052 test_and_set_bit(FLG_ORIG, &st->l2.flag);
1053 st->l2.maxlen = MAX_DFRAME_LEN;
1054 st->l2.window = 1;
1055 st->l2.T200 = 1000; /* 1000 milliseconds */
1056 st->l2.N200 = 3; /* try 3 times */
1057 st->l2.T203 = 10000; /* 10000 milliseconds */
1058 if (test_bit(FLG_TWO_DCHAN, &cs->HW_Flags))
1059 sprintf(tmp, "DCh%d Q.921 ", chanp->chan);
1060 else
1061 sprintf(tmp, "DCh Q.921 ");
1062 setstack_isdnl2(st, tmp);
1063 setstack_l3dc(st, chanp);
1064 st->lli.userdata = chanp;
1065 st->l3.l3l4 = dchan_l3l4;
1066
1067 return 0;
1068 }
1069
1070 static void
1071 callc_debug(struct FsmInst *fi, char *fmt, ...)
1072 {
1073 va_list args;
1074 struct Channel *chanp = fi->userdata;
1075 char tmp[16];
1076
1077 va_start(args, fmt);
1078 sprintf(tmp, "Ch%d callc ", chanp->chan);
1079 VHiSax_putstatus(chanp->cs, tmp, fmt, args);
1080 va_end(args);
1081 }
1082
1083 static int
1084 init_chan(int chan, struct IsdnCardState *csta)
1085 {
1086 struct Channel *chanp = csta->channel + chan;
1087 int err;
1088
1089 chanp->cs = csta;
1090 chanp->bcs = csta->bcs + chan;
1091 chanp->chan = chan;
1092 chanp->incoming = 0;
1093 chanp->debug = 0;
1094 chanp->Flags = 0;
1095 chanp->leased = 0;
1096 err = init_PStack(&chanp->b_st);
1097 if (err)
1098 return err;
1099 chanp->b_st->l1.delay = DEFAULT_B_DELAY;
1100 chanp->fi.fsm = &callcfsm;
1101 chanp->fi.state = ST_NULL;
1102 chanp->fi.debug = 0;
1103 chanp->fi.userdata = chanp;
1104 chanp->fi.printdebug = callc_debug;
1105 FsmInitTimer(&chanp->fi, &chanp->dial_timer);
1106 FsmInitTimer(&chanp->fi, &chanp->drel_timer);
1107 if (!chan || (test_bit(FLG_TWO_DCHAN, &csta->HW_Flags) && chan < 2)) {
1108 err = init_d_st(chanp);
1109 if (err)
1110 return err;
1111 } else {
1112 chanp->d_st = csta->channel->d_st;
1113 }
1114 chanp->data_open = 0;
1115 return 0;
1116 }
1117
1118 int
1119 CallcNewChan(struct IsdnCardState *csta) {
1120 int i, err;
1121
1122 chancount += 2;
1123 err = init_chan(0, csta);
1124 if (err)
1125 return err;
1126 err = init_chan(1, csta);
1127 if (err)
1128 return err;
1129 printk(KERN_INFO "HiSax: 2 channels added\n");
1130
1131 for (i = 0; i < MAX_WAITING_CALLS; i++) {
1132 err = init_chan(i+2,csta);
1133 if (err)
1134 return err;
1135 }
1136 printk(KERN_INFO "HiSax: MAX_WAITING_CALLS added\n");
1137 if (test_bit(FLG_PTP, &csta->channel->d_st->l2.flag)) {
1138 printk(KERN_INFO "LAYER2 WATCHING ESTABLISH\n");
1139 csta->channel->d_st->lli.l4l3(csta->channel->d_st,
1140 DL_ESTABLISH | REQUEST, NULL);
1141 }
1142 return (0);
1143 }
1144
1145 static void
1146 release_d_st(struct Channel *chanp)
1147 {
1148 struct PStack *st = chanp->d_st;
1149
1150 if (!st)
1151 return;
1152 releasestack_isdnl2(st);
1153 releasestack_isdnl3(st);
1154 HiSax_rmlist(st->l1.hardware, st);
1155 kfree(st);
1156 chanp->d_st = NULL;
1157 }
1158
1159 void
1160 CallcFreeChan(struct IsdnCardState *csta)
1161 {
1162 int i;
1163
1164 for (i = 0; i < 2; i++) {
1165 FsmDelTimer(&csta->channel[i].drel_timer, 74);
1166 FsmDelTimer(&csta->channel[i].dial_timer, 75);
1167 if (i || test_bit(FLG_TWO_DCHAN, &csta->HW_Flags))
1168 release_d_st(csta->channel + i);
1169 if (csta->channel[i].b_st) {
1170 release_b_st(csta->channel + i);
1171 kfree(csta->channel[i].b_st);
1172 csta->channel[i].b_st = NULL;
1173 } else
1174 printk(KERN_WARNING "CallcFreeChan b_st ch%d allready freed\n", i);
1175 if (i || test_bit(FLG_TWO_DCHAN, &csta->HW_Flags)) {
1176 release_d_st(csta->channel + i);
1177 } else
1178 csta->channel[i].d_st = NULL;
1179 }
1180 }
1181
1182 static void
1183 lldata_handler(struct PStack *st, int pr, void *arg)
1184 {
1185 struct Channel *chanp = (struct Channel *) st->lli.userdata;
1186 struct sk_buff *skb = arg;
1187
1188 switch (pr) {
1189 case (DL_DATA | INDICATION):
1190 if (chanp->data_open) {
1191 if (chanp->debug & 0x800)
1192 link_debug(chanp, 0, "lldata: %d", skb->len);
1193 chanp->cs->iif.rcvcallb_skb(chanp->cs->myid, chanp->chan, skb);
1194 } else {
1195 link_debug(chanp, 0, "lldata: channel not open");
1196 dev_kfree_skb(skb);
1197 }
1198 break;
1199 case (DL_ESTABLISH | INDICATION):
1200 case (DL_ESTABLISH | CONFIRM):
1201 FsmEvent(&chanp->fi, EV_BC_EST, NULL);
1202 break;
1203 case (DL_RELEASE | INDICATION):
1204 case (DL_RELEASE | CONFIRM):
1205 FsmEvent(&chanp->fi, EV_BC_REL, NULL);
1206 break;
1207 default:
1208 printk(KERN_WARNING "lldata_handler unknown primitive %#x\n",
1209 pr);
1210 break;
1211 }
1212 }
1213
1214 static void
1215 lltrans_handler(struct PStack *st, int pr, void *arg)
1216 {
1217 struct Channel *chanp = (struct Channel *) st->lli.userdata;
1218 struct sk_buff *skb = arg;
1219
1220 switch (pr) {
1221 case (PH_DATA | INDICATION):
1222 if (chanp->data_open) {
1223 if (chanp->debug & 0x800)
1224 link_debug(chanp, 0, "lltrans: %d", skb->len);
1225 chanp->cs->iif.rcvcallb_skb(chanp->cs->myid, chanp->chan, skb);
1226 } else {
1227 link_debug(chanp, 0, "lltrans: channel not open");
1228 dev_kfree_skb(skb);
1229 }
1230 break;
1231 case (PH_ACTIVATE | INDICATION):
1232 case (PH_ACTIVATE | CONFIRM):
1233 FsmEvent(&chanp->fi, EV_BC_EST, NULL);
1234 break;
1235 case (PH_DEACTIVATE | INDICATION):
1236 case (PH_DEACTIVATE | CONFIRM):
1237 FsmEvent(&chanp->fi, EV_BC_REL, NULL);
1238 break;
1239 default:
1240 printk(KERN_WARNING "lltrans_handler unknown primitive %#x\n",
1241 pr);
1242 break;
1243 }
1244 }
1245
1246 void
1247 lli_writewakeup(struct PStack *st, int len)
1248 {
1249 struct Channel *chanp = st->lli.userdata;
1250 isdn_ctrl ic;
1251
1252 if (chanp->debug & 0x800)
1253 link_debug(chanp, 0, "llwakeup: %d", len);
1254 ic.driver = chanp->cs->myid;
1255 ic.command = ISDN_STAT_BSENT;
1256 ic.arg = chanp->chan;
1257 ic.parm.length = len;
1258 chanp->cs->iif.statcallb(&ic);
1259 }
1260
1261 static int
1262 init_b_st(struct Channel *chanp, int incoming)
1263 {
1264 struct PStack *st = chanp->b_st;
1265 struct IsdnCardState *cs = chanp->cs;
1266 char tmp[16];
1267
1268 st->l1.hardware = cs;
1269 if (chanp->leased)
1270 st->l1.bc = chanp->chan & 1;
1271 else
1272 st->l1.bc = chanp->proc->para.bchannel - 1;
1273 switch (chanp->l2_active_protocol) {
1274 case (ISDN_PROTO_L2_X75I):
1275 case (ISDN_PROTO_L2_HDLC):
1276 st->l1.mode = L1_MODE_HDLC;
1277 break;
1278 case (ISDN_PROTO_L2_HDLC_56K):
1279 st->l1.mode = L1_MODE_HDLC_56K;
1280 break;
1281 case (ISDN_PROTO_L2_TRANS):
1282 st->l1.mode = L1_MODE_TRANS;
1283 break;
1284 case (ISDN_PROTO_L2_MODEM):
1285 st->l1.mode = L1_MODE_V32;
1286 break;
1287 case (ISDN_PROTO_L2_FAX):
1288 st->l1.mode = L1_MODE_FAX;
1289 break;
1290 }
1291 chanp->bcs->conmsg = NULL;
1292 if (chanp->bcs->BC_SetStack(st, chanp->bcs))
1293 return (-1);
1294 st->l2.flag = 0;
1295 test_and_set_bit(FLG_LAPB, &st->l2.flag);
1296 st->l2.maxlen = MAX_DATA_SIZE;
1297 if (!incoming)
1298 test_and_set_bit(FLG_ORIG, &st->l2.flag);
1299 st->l2.T200 = 1000; /* 1000 milliseconds */
1300 st->l2.window = 7;
1301 st->l2.N200 = 4; /* try 4 times */
1302 st->l2.T203 = 5000; /* 5000 milliseconds */
1303 st->l3.debug = 0;
1304 switch (chanp->l2_active_protocol) {
1305 case (ISDN_PROTO_L2_X75I):
1306 sprintf(tmp, "Ch%d X.75", chanp->chan);
1307 setstack_isdnl2(st, tmp);
1308 setstack_l3bc(st, chanp);
1309 st->l2.l2l3 = lldata_handler;
1310 st->lli.userdata = chanp;
1311 test_and_clear_bit(FLG_LLI_L1WAKEUP, &st->lli.flag);
1312 test_and_set_bit(FLG_LLI_L2WAKEUP, &st->lli.flag);
1313 st->l2.l2m.debug = chanp->debug & 16;
1314 st->l2.debug = chanp->debug & 64;
1315 break;
1316 case (ISDN_PROTO_L2_HDLC):
1317 case (ISDN_PROTO_L2_HDLC_56K):
1318 case (ISDN_PROTO_L2_TRANS):
1319 case (ISDN_PROTO_L2_MODEM):
1320 case (ISDN_PROTO_L2_FAX):
1321 st->l1.l1l2 = lltrans_handler;
1322 st->lli.userdata = chanp;
1323 test_and_set_bit(FLG_LLI_L1WAKEUP, &st->lli.flag);
1324 test_and_clear_bit(FLG_LLI_L2WAKEUP, &st->lli.flag);
1325 setstack_transl2(st);
1326 setstack_l3bc(st, chanp);
1327 break;
1328 }
1329 test_and_set_bit(FLG_START_B, &chanp->Flags);
1330 return (0);
1331 }
1332
1333 static void
1334 leased_l4l3(struct PStack *st, int pr, void *arg)
1335 {
1336 struct Channel *chanp = (struct Channel *) st->lli.userdata;
1337 struct sk_buff *skb = arg;
1338
1339 switch (pr) {
1340 case (DL_DATA | REQUEST):
1341 link_debug(chanp, 0, "leased line d-channel DATA");
1342 dev_kfree_skb(skb);
1343 break;
1344 case (DL_ESTABLISH | REQUEST):
1345 st->l2.l2l1(st, PH_ACTIVATE | REQUEST, NULL);
1346 break;
1347 case (DL_RELEASE | REQUEST):
1348 break;
1349 default:
1350 printk(KERN_WARNING "transd_l4l3 unknown primitive %#x\n",
1351 pr);
1352 break;
1353 }
1354 }
1355
1356 static void
1357 leased_l1l2(struct PStack *st, int pr, void *arg)
1358 {
1359 struct Channel *chanp = (struct Channel *) st->lli.userdata;
1360 struct sk_buff *skb = arg;
1361 int i,event = EV_LEASED_REL;
1362
1363 switch (pr) {
1364 case (PH_DATA | INDICATION):
1365 link_debug(chanp, 0, "leased line d-channel DATA");
1366 dev_kfree_skb(skb);
1367 break;
1368 case (PH_ACTIVATE | INDICATION):
1369 case (PH_ACTIVATE | CONFIRM):
1370 event = EV_LEASED;
1371 case (PH_DEACTIVATE | INDICATION):
1372 case (PH_DEACTIVATE | CONFIRM):
1373 if (test_bit(FLG_TWO_DCHAN, &chanp->cs->HW_Flags))
1374 i = 1;
1375 else
1376 i = 0;
1377 while (i < 2) {
1378 FsmEvent(&chanp->fi, event, NULL);
1379 chanp++;
1380 i++;
1381 }
1382 break;
1383 default:
1384 printk(KERN_WARNING
1385 "transd_l1l2 unknown primitive %#x\n", pr);
1386 break;
1387 }
1388 }
1389
1390 static void
1391 distr_debug(struct IsdnCardState *csta, int debugflags)
1392 {
1393 int i;
1394 struct Channel *chanp = csta->channel;
1395
1396 for (i = 0; i < (2 + MAX_WAITING_CALLS) ; i++) {
1397 chanp[i].debug = debugflags;
1398 chanp[i].fi.debug = debugflags & 2;
1399 chanp[i].d_st->l2.l2m.debug = debugflags & 8;
1400 chanp[i].b_st->l2.l2m.debug = debugflags & 0x10;
1401 chanp[i].d_st->l2.debug = debugflags & 0x20;
1402 chanp[i].b_st->l2.debug = debugflags & 0x40;
1403 chanp[i].d_st->l3.l3m.debug = debugflags & 0x80;
1404 chanp[i].b_st->l3.l3m.debug = debugflags & 0x100;
1405 chanp[i].b_st->ma.tei_m.debug = debugflags & 0x200;
1406 chanp[i].b_st->ma.debug = debugflags & 0x200;
1407 chanp[i].d_st->l1.l1m.debug = debugflags & 0x1000;
1408 chanp[i].b_st->l1.l1m.debug = debugflags & 0x2000;
1409 }
1410 if (debugflags & 4)
1411 csta->debug |= DEB_DLOG_HEX;
1412 else
1413 csta->debug &= ~DEB_DLOG_HEX;
1414 }
1415
1416 static char tmpbuf[256];
1417
1418 static void
1419 capi_debug(struct Channel *chanp, capi_msg *cm)
1420 {
1421 char *t = tmpbuf;
1422
1423 t += QuickHex(t, (u_char *)cm, (cm->Length>50)? 50: cm->Length);
1424 t--;
1425 *t= 0;
1426 HiSax_putstatus(chanp->cs, "Ch", "%d CAPIMSG %s", chanp->chan, tmpbuf);
1427 }
1428
1429 static void
1430 lli_got_fac_req(struct Channel *chanp, capi_msg *cm) {
1431 if ((cm->para[0] != 3) || (cm->para[1] != 0))
1432 return;
1433 if (cm->para[2]<3)
1434 return;
1435 if (cm->para[4] != 0)
1436 return;
1437 switch(cm->para[3]) {
1438 case 4: /* Suspend */
1439 strncpy(chanp->setup.phone, &cm->para[5], cm->para[5] +1);
1440 FsmEvent(&chanp->fi, EV_SUSPEND, cm);
1441 break;
1442 case 5: /* Resume */
1443 strncpy(chanp->setup.phone, &cm->para[5], cm->para[5] +1);
1444 if (chanp->fi.state == ST_NULL) {
1445 FsmEvent(&chanp->fi, EV_RESUME, cm);
1446 } else {
1447 FsmDelTimer(&chanp->dial_timer, 72);
1448 FsmAddTimer(&chanp->dial_timer, 80, EV_RESUME, cm, 73);
1449 }
1450 break;
1451 }
1452 }
1453
1454 static void
1455 lli_got_manufacturer(struct Channel *chanp, struct IsdnCardState *cs, capi_msg *cm) {
1456 if ((cs->typ == ISDN_CTYPE_ELSA) || (cs->typ == ISDN_CTYPE_ELSA_PNP) ||
1457 (cs->typ == ISDN_CTYPE_ELSA_PCI)) {
1458 if (cs->hw.elsa.MFlag) {
1459 cs->cardmsg(cs, CARD_AUX_IND, cm->para);
1460 }
1461 }
1462 }
1463
1464
1465 /***************************************************************/
1466 /* Limit the available number of channels for the current card */
1467 /***************************************************************/
1468 static int
1469 set_channel_limit(struct IsdnCardState *cs, int chanmax)
1470 {
1471 isdn_ctrl ic;
1472 int i, ii;
1473
1474 if ((chanmax < 0) || (chanmax > 2))
1475 return(-EINVAL);
1476 cs->chanlimit = 0;
1477 for (ii = 0; ii < 2; ii++) {
1478 ic.driver = cs->myid;
1479 ic.command = ISDN_STAT_DISCH;
1480 ic.arg = ii;
1481 if (ii >= chanmax)
1482 ic.parm.num[0] = 0; /* disabled */
1483 else
1484 ic.parm.num[0] = 1; /* enabled */
1485 i = cs->iif.statcallb(&ic);
1486 if (i) return(-EINVAL);
1487 if (ii < chanmax)
1488 cs->chanlimit++;
1489 }
1490 return(0);
1491 } /* set_channel_limit */
1492
1493 int
1494 HiSax_command(isdn_ctrl * ic)
1495 {
1496 struct IsdnCardState *csta = hisax_findcard(ic->driver);
1497 struct PStack *st;
1498 struct Channel *chanp;
1499 int i;
1500 u_int num;
1501
1502 if (!csta) {
1503 printk(KERN_ERR
1504 "HiSax: if_command %d called with invalid driverId %d!\n",
1505 ic->command, ic->driver);
1506 return -ENODEV;
1507 }
1508 switch (ic->command) {
1509 case (ISDN_CMD_SETEAZ):
1510 chanp = csta->channel + ic->arg;
1511 break;
1512 case (ISDN_CMD_SETL2):
1513 chanp = csta->channel + (ic->arg & 0xff);
1514 if (chanp->debug & 1)
1515 link_debug(chanp, 1, "SETL2 card %d %ld",
1516 csta->cardnr + 1, ic->arg >> 8);
1517 chanp->l2_protocol = ic->arg >> 8;
1518 break;
1519 case (ISDN_CMD_SETL3):
1520 chanp = csta->channel + (ic->arg & 0xff);
1521 if (chanp->debug & 1)
1522 link_debug(chanp, 1, "SETL3 card %d %ld",
1523 csta->cardnr + 1, ic->arg >> 8);
1524 chanp->l3_protocol = ic->arg >> 8;
1525 break;
1526 case (ISDN_CMD_DIAL):
1527 chanp = csta->channel + (ic->arg & 0xff);
1528 if (chanp->debug & 1)
1529 link_debug(chanp, 1, "DIAL %s -> %s (%d,%d)",
1530 ic->parm.setup.eazmsn, ic->parm.setup.phone,
1531 ic->parm.setup.si1, ic->parm.setup.si2);
1532 memcpy(&chanp->setup, &ic->parm.setup, sizeof(setup_parm));
1533 if (!strcmp(chanp->setup.eazmsn, "0"))
1534 chanp->setup.eazmsn[0] = '\0';
1535 /* this solution is dirty and may be change, if
1536 * we make a callreference based callmanager */
1537 if (chanp->fi.state == ST_NULL) {
1538 FsmEvent(&chanp->fi, EV_DIAL, NULL);
1539 } else {
1540 FsmDelTimer(&chanp->dial_timer, 70);
1541 FsmAddTimer(&chanp->dial_timer, 50, EV_DIAL, NULL, 71);
1542 }
1543 break;
1544 case (ISDN_CMD_ACCEPTB):
1545 chanp = csta->channel + ic->arg;
1546 if (chanp->debug & 1)
1547 link_debug(chanp, 1, "ACCEPTB");
1548 FsmEvent(&chanp->fi, EV_ACCEPTB, NULL);
1549 break;
1550 case (ISDN_CMD_ACCEPTD):
1551 chanp = csta->channel + ic->arg;
1552 memcpy(&chanp->setup, &ic->parm.setup, sizeof(setup_parm));
1553 if (chanp->debug & 1)
1554 link_debug(chanp, 1, "ACCEPTD");
1555 FsmEvent(&chanp->fi, EV_ACCEPTD, NULL);
1556 break;
1557 case (ISDN_CMD_HANGUP):
1558 chanp = csta->channel + ic->arg;
1559 if (chanp->debug & 1)
1560 link_debug(chanp, 1, "HANGUP");
1561 FsmEvent(&chanp->fi, EV_HANGUP, NULL);
1562 break;
1563 case (CAPI_PUT_MESSAGE):
1564 chanp = csta->channel + ic->arg;
1565 if (chanp->debug & 1)
1566 capi_debug(chanp, &ic->parm.cmsg);
1567 if (ic->parm.cmsg.Length < 8)
1568 break;
1569 switch(ic->parm.cmsg.Command) {
1570 case CAPI_FACILITY:
1571 if (ic->parm.cmsg.Subcommand == CAPI_REQ)
1572 lli_got_fac_req(chanp, &ic->parm.cmsg);
1573 break;
1574 case CAPI_MANUFACTURER:
1575 if (ic->parm.cmsg.Subcommand == CAPI_REQ)
1576 lli_got_manufacturer(chanp, csta, &ic->parm.cmsg);
1577 break;
1578 default:
1579 break;
1580 }
1581 break;
1582 case (ISDN_CMD_IOCTL):
1583 switch (ic->arg) {
1584 case (0):
1585 num = *(unsigned int *) ic->parm.num;
1586 HiSax_reportcard(csta->cardnr, num);
1587 break;
1588 case (1):
1589 num = *(unsigned int *) ic->parm.num;
1590 distr_debug(csta, num);
1591 printk(KERN_DEBUG "HiSax: debugging flags card %d set to %x\n",
1592 csta->cardnr + 1, num);
1593 HiSax_putstatus(csta, "debugging flags ",
1594 "card %d set to %x", csta->cardnr + 1, num);
1595 break;
1596 case (2):
1597 num = *(unsigned int *) ic->parm.num;
1598 csta->channel[0].b_st->l1.delay = num;
1599 csta->channel[1].b_st->l1.delay = num;
1600 HiSax_putstatus(csta, "delay ", "card %d set to %d ms",
1601 csta->cardnr + 1, num);
1602 printk(KERN_DEBUG "HiSax: delay card %d set to %d ms\n",
1603 csta->cardnr + 1, num);
1604 break;
1605 case (5): /* set card in leased mode */
1606 num = *(unsigned int *) ic->parm.num;
1607 if ((num <1) || (num > 2)) {
1608 HiSax_putstatus(csta, "Set LEASED ",
1609 "wrong channel %d", num);
1610 printk(KERN_WARNING "HiSax: Set LEASED wrong channel %d\n",
1611 num);
1612 } else {
1613 num--;
1614 chanp = csta->channel +num;
1615 chanp->leased = 1;
1616 HiSax_putstatus(csta, "Card",
1617 "%d channel %d set leased mode\n",
1618 csta->cardnr + 1, num + 1);
1619 chanp->d_st->l1.l1l2 = leased_l1l2;
1620 chanp->d_st->lli.l4l3 = leased_l4l3;
1621 chanp->d_st->lli.l4l3(chanp->d_st,
1622 DL_ESTABLISH | REQUEST, NULL);
1623 }
1624 break;
1625 case (6): /* set B-channel test loop */
1626 num = *(unsigned int *) ic->parm.num;
1627 if (csta->stlist)
1628 csta->stlist->l2.l2l1(csta->stlist,
1629 PH_TESTLOOP | REQUEST, (void *) (long)num);
1630 break;
1631 case (7): /* set card in PTP mode */
1632 num = *(unsigned int *) ic->parm.num;
1633 if (test_bit(FLG_TWO_DCHAN, &csta->HW_Flags)) {
1634 printk(KERN_ERR "HiSax PTP mode only with one TEI possible\n");
1635 } else if (num) {
1636 test_and_set_bit(FLG_PTP, &csta->channel[0].d_st->l2.flag);
1637 test_and_set_bit(FLG_FIXED_TEI, &csta->channel[0].d_st->l2.flag);
1638 csta->channel[0].d_st->l2.tei = 0;
1639 HiSax_putstatus(csta, "set card ", "in PTP mode");
1640 printk(KERN_DEBUG "HiSax: set card in PTP mode\n");
1641 printk(KERN_INFO "LAYER2 WATCHING ESTABLISH\n");
1642 csta->channel[0].d_st->lli.l4l3(csta->channel[0].d_st,
1643 DL_ESTABLISH | REQUEST, NULL);
1644 } else {
1645 test_and_clear_bit(FLG_PTP, &csta->channel[0].d_st->l2.flag);
1646 test_and_clear_bit(FLG_FIXED_TEI, &csta->channel[0].d_st->l2.flag);
1647 HiSax_putstatus(csta, "set card ", "in PTMP mode");
1648 printk(KERN_DEBUG "HiSax: set card in PTMP mode\n");
1649 }
1650 break;
1651 case (8): /* set card in FIXED TEI mode */
1652 num = *(unsigned int *) ic->parm.num;
1653 chanp = csta->channel + (num & 1);
1654 num = num >>1;
1655 if (num == 127) {
1656 test_and_clear_bit(FLG_FIXED_TEI, &chanp->d_st->l2.flag);
1657 chanp->d_st->l2.tei = -1;
1658 HiSax_putstatus(csta, "set card ", "in VAR TEI mode");
1659 printk(KERN_DEBUG "HiSax: set card in VAR TEI mode\n");
1660 } else {
1661 test_and_set_bit(FLG_FIXED_TEI, &chanp->d_st->l2.flag);
1662 chanp->d_st->l2.tei = num;
1663 HiSax_putstatus(csta, "set card ", "in FIXED TEI (%d) mode", num);
1664 printk(KERN_DEBUG "HiSax: set card in FIXED TEI (%d) mode\n",
1665 num);
1666 }
1667 chanp->d_st->lli.l4l3(chanp->d_st,
1668 DL_ESTABLISH | REQUEST, NULL);
1669 break;
1670 case (11):
1671 num = csta->debug & DEB_DLOG_HEX;
1672 csta->debug = *(unsigned int *) ic->parm.num;
1673 csta->debug |= num;
1674 HiSax_putstatus(cards[0].cs, "l1 debugging ",
1675 "flags card %d set to %x",
1676 csta->cardnr + 1, csta->debug);
1677 printk(KERN_DEBUG "HiSax: l1 debugging flags card %d set to %x\n",
1678 csta->cardnr + 1, csta->debug);
1679 break;
1680 case (13):
1681 csta->channel[0].d_st->l3.debug = *(unsigned int *) ic->parm.num;
1682 csta->channel[1].d_st->l3.debug = *(unsigned int *) ic->parm.num;
1683 HiSax_putstatus(cards[0].cs, "l3 debugging ",
1684 "flags card %d set to %x\n", csta->cardnr + 1,
1685 *(unsigned int *) ic->parm.num);
1686 printk(KERN_DEBUG "HiSax: l3 debugging flags card %d set to %x\n",
1687 csta->cardnr + 1, *(unsigned int *) ic->parm.num);
1688 break;
1689 case (10):
1690 i = *(unsigned int *) ic->parm.num;
1691 return(set_channel_limit(csta, i));
1692 default:
1693 if (csta->auxcmd)
1694 return(csta->auxcmd(csta, ic));
1695 printk(KERN_DEBUG "HiSax: invalid ioclt %d\n",
1696 (int) ic->arg);
1697 return (-EINVAL);
1698 }
1699 break;
1700
1701 case (ISDN_CMD_PROCEED):
1702 chanp = csta->channel + ic->arg;
1703 if (chanp->debug & 1)
1704 link_debug(chanp, 1, "PROCEED");
1705 FsmEvent(&chanp->fi, EV_PROCEED, NULL);
1706 break;
1707
1708 case (ISDN_CMD_ALERT):
1709 chanp = csta->channel + ic->arg;
1710 if (chanp->debug & 1)
1711 link_debug(chanp, 1, "ALERT");
1712 FsmEvent(&chanp->fi, EV_ALERT, NULL);
1713 break;
1714
1715 case (ISDN_CMD_REDIR):
1716 chanp = csta->channel + ic->arg;
1717 if (chanp->debug & 1)
1718 link_debug(chanp, 1, "REDIR");
1719 memcpy(&chanp->setup, &ic->parm.setup, sizeof(setup_parm));
1720 FsmEvent(&chanp->fi, EV_REDIR, NULL);
1721 break;
1722
1723 /* protocol specific io commands */
1724 case (ISDN_CMD_PROT_IO):
1725 for (st = csta->stlist; st; st = st->next)
1726 if (st->protocol == (ic->arg & 0xFF))
1727 return(st->lli.l4l3_proto(st, ic));
1728 return(-EINVAL);
1729 break;
1730 default:
1731 if (csta->auxcmd)
1732 return(csta->auxcmd(csta, ic));
1733 return(-EINVAL);
1734 }
1735 return (0);
1736 }
1737
1738 int
1739 HiSax_writebuf_skb(int id, int chan, int ack, struct sk_buff *skb)
1740 {
1741 struct IsdnCardState *csta = hisax_findcard(id);
1742 struct Channel *chanp;
1743 struct PStack *st;
1744 int len = skb->len;
1745 struct sk_buff *nskb;
1746
1747 if (!csta) {
1748 printk(KERN_ERR
1749 "HiSax: if_sendbuf called with invalid driverId!\n");
1750 return -ENODEV;
1751 }
1752 chanp = csta->channel + chan;
1753 st = chanp->b_st;
1754 if (!chanp->data_open) {
1755 link_debug(chanp, 1, "writebuf: channel not open");
1756 return -EIO;
1757 }
1758 if (len > MAX_DATA_SIZE) {
1759 link_debug(chanp, 1, "writebuf: packet too large (%d bytes)", len);
1760 printk(KERN_WARNING "HiSax_writebuf: packet too large (%d bytes) !\n",
1761 len);
1762 return -EINVAL;
1763 }
1764 if (len) {
1765 if ((len + chanp->bcs->tx_cnt) > MAX_DATA_MEM) {
1766 /* Must return 0 here, since this is not an error
1767 * but a temporary lack of resources.
1768 */
1769 if (chanp->debug & 0x800)
1770 link_debug(chanp, 1, "writebuf: no buffers for %d bytes", len);
1771 return 0;
1772 } else if (chanp->debug & 0x800)
1773 link_debug(chanp, 1, "writebuf %d/%d/%d", len, chanp->bcs->tx_cnt,MAX_DATA_MEM);
1774 nskb = skb_clone(skb, GFP_ATOMIC);
1775 if (nskb) {
1776 nskb->truesize = nskb->len;
1777 if (!ack)
1778 nskb->pkt_type = PACKET_NOACK;
1779 if (chanp->l2_active_protocol == ISDN_PROTO_L2_X75I)
1780 st->l3.l3l2(st, DL_DATA | REQUEST, nskb);
1781 else {
1782 chanp->bcs->tx_cnt += len;
1783 st->l2.l2l1(st, PH_DATA | REQUEST, nskb);
1784 }
1785 dev_kfree_skb(skb);
1786 } else
1787 len = 0;
1788 }
1789 return (len);
1790 }