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1 | /* $Id: l3ni1.c,v 2.8.2.3 2004/01/13 14:31:25 keil Exp $ |
2 | * | |
3 | * NI1 D-channel protocol | |
4 | * | |
5 | * Author Matt Henderson & Guy Ellis | |
6 | * Copyright by Traverse Technologies Pty Ltd, www.travers.com.au | |
7 | * | |
8 | * This software may be used and distributed according to the terms | |
9 | * of the GNU General Public License, incorporated herein by reference. | |
10 | * | |
11 | * 2000.6.6 Initial implementation of routines for US NI1 | |
12 | * Layer 3 protocol based on the EURO/DSS1 D-channel protocol | |
13 | * driver written by Karsten Keil et al. | |
14 | * NI-1 Hall of Fame - Thanks to.... | |
15 | * Ragnar Paulson - for some handy code fragments | |
16 | * Will Scales - beta tester extraordinaire | |
17 | * Brett Whittacre - beta tester and remote devel system in Vegas | |
18 | * | |
19 | */ | |
20 | ||
21 | #include "hisax.h" | |
22 | #include "isdnl3.h" | |
23 | #include "l3ni1.h" | |
24 | #include <linux/ctype.h> | |
25 | ||
26 | extern char *HiSax_getrev(const char *revision); | |
672c3fd9 | 27 | static const char *ni1_revision = "$Revision: 2.8.2.3 $"; |
1da177e4 LT |
28 | |
29 | #define EXT_BEARER_CAPS 1 | |
30 | ||
31 | #define MsgHead(ptr, cref, mty) \ | |
32 | *ptr++ = 0x8; \ | |
33 | if (cref == -1) { \ | |
34 | *ptr++ = 0x0; \ | |
35 | } else { \ | |
36 | *ptr++ = 0x1; \ | |
37 | *ptr++ = cref^0x80; \ | |
38 | } \ | |
39 | *ptr++ = mty | |
40 | ||
41 | ||
42 | /**********************************************/ | |
43 | /* get a new invoke id for remote operations. */ | |
44 | /* Only a return value != 0 is valid */ | |
45 | /**********************************************/ | |
46 | static unsigned char new_invoke_id(struct PStack *p) | |
47 | { | |
48 | unsigned char retval; | |
49 | int i; | |
50 | ||
51 | i = 32; /* maximum search depth */ | |
52 | ||
53 | retval = p->prot.ni1.last_invoke_id + 1; /* try new id */ | |
54 | while ((i) && (p->prot.ni1.invoke_used[retval >> 3] == 0xFF)) { | |
55 | p->prot.ni1.last_invoke_id = (retval & 0xF8) + 8; | |
56 | i--; | |
57 | } | |
58 | if (i) { | |
59 | while (p->prot.ni1.invoke_used[retval >> 3] & (1 << (retval & 7))) | |
60 | retval++; | |
61 | } else | |
62 | retval = 0; | |
63 | p->prot.ni1.last_invoke_id = retval; | |
64 | p->prot.ni1.invoke_used[retval >> 3] |= (1 << (retval & 7)); | |
65 | return(retval); | |
66 | } /* new_invoke_id */ | |
67 | ||
68 | /*************************/ | |
69 | /* free a used invoke id */ | |
70 | /*************************/ | |
71 | static void free_invoke_id(struct PStack *p, unsigned char id) | |
72 | { | |
73 | ||
74 | if (!id) return; /* 0 = invalid value */ | |
75 | ||
76 | p->prot.ni1.invoke_used[id >> 3] &= ~(1 << (id & 7)); | |
77 | } /* free_invoke_id */ | |
78 | ||
79 | ||
80 | /**********************************************************/ | |
81 | /* create a new l3 process and fill in ni1 specific data */ | |
82 | /**********************************************************/ | |
83 | static struct l3_process | |
84 | *ni1_new_l3_process(struct PStack *st, int cr) | |
85 | { struct l3_process *proc; | |
86 | ||
87 | if (!(proc = new_l3_process(st, cr))) | |
88 | return(NULL); | |
89 | ||
90 | proc->prot.ni1.invoke_id = 0; | |
91 | proc->prot.ni1.remote_operation = 0; | |
92 | proc->prot.ni1.uus1_data[0] = '\0'; | |
93 | ||
94 | return(proc); | |
95 | } /* ni1_new_l3_process */ | |
96 | ||
97 | /************************************************/ | |
98 | /* free a l3 process and all ni1 specific data */ | |
99 | /************************************************/ | |
100 | static void | |
101 | ni1_release_l3_process(struct l3_process *p) | |
102 | { | |
103 | free_invoke_id(p->st,p->prot.ni1.invoke_id); | |
104 | release_l3_process(p); | |
105 | } /* ni1_release_l3_process */ | |
106 | ||
107 | /********************************************************/ | |
108 | /* search a process with invoke id id and dummy callref */ | |
109 | /********************************************************/ | |
110 | static struct l3_process * | |
111 | l3ni1_search_dummy_proc(struct PStack *st, int id) | |
112 | { struct l3_process *pc = st->l3.proc; /* start of processes */ | |
113 | ||
114 | if (!id) return(NULL); | |
115 | ||
116 | while (pc) | |
117 | { if ((pc->callref == -1) && (pc->prot.ni1.invoke_id == id)) | |
118 | return(pc); | |
119 | pc = pc->next; | |
120 | } | |
121 | return(NULL); | |
122 | } /* l3ni1_search_dummy_proc */ | |
123 | ||
124 | /*******************************************************************/ | |
125 | /* called when a facility message with a dummy callref is received */ | |
126 | /* and a return result is delivered. id specifies the invoke id. */ | |
127 | /*******************************************************************/ | |
128 | static void | |
129 | l3ni1_dummy_return_result(struct PStack *st, int id, u_char *p, u_char nlen) | |
130 | { isdn_ctrl ic; | |
131 | struct IsdnCardState *cs; | |
132 | struct l3_process *pc = NULL; | |
133 | ||
134 | if ((pc = l3ni1_search_dummy_proc(st, id))) | |
135 | { L3DelTimer(&pc->timer); /* remove timer */ | |
136 | ||
137 | cs = pc->st->l1.hardware; | |
138 | ic.driver = cs->myid; | |
139 | ic.command = ISDN_STAT_PROT; | |
140 | ic.arg = NI1_STAT_INVOKE_RES; | |
141 | ic.parm.ni1_io.hl_id = pc->prot.ni1.invoke_id; | |
142 | ic.parm.ni1_io.ll_id = pc->prot.ni1.ll_id; | |
143 | ic.parm.ni1_io.proc = pc->prot.ni1.proc; | |
144 | ic.parm.ni1_io.timeout= 0; | |
145 | ic.parm.ni1_io.datalen = nlen; | |
146 | ic.parm.ni1_io.data = p; | |
147 | free_invoke_id(pc->st, pc->prot.ni1.invoke_id); | |
148 | pc->prot.ni1.invoke_id = 0; /* reset id */ | |
149 | ||
150 | cs->iif.statcallb(&ic); | |
151 | ni1_release_l3_process(pc); | |
152 | } | |
153 | else | |
154 | l3_debug(st, "dummy return result id=0x%x result len=%d",id,nlen); | |
155 | } /* l3ni1_dummy_return_result */ | |
156 | ||
157 | /*******************************************************************/ | |
158 | /* called when a facility message with a dummy callref is received */ | |
159 | /* and a return error is delivered. id specifies the invoke id. */ | |
160 | /*******************************************************************/ | |
161 | static void | |
162 | l3ni1_dummy_error_return(struct PStack *st, int id, ulong error) | |
163 | { isdn_ctrl ic; | |
164 | struct IsdnCardState *cs; | |
165 | struct l3_process *pc = NULL; | |
166 | ||
167 | if ((pc = l3ni1_search_dummy_proc(st, id))) | |
168 | { L3DelTimer(&pc->timer); /* remove timer */ | |
169 | ||
170 | cs = pc->st->l1.hardware; | |
171 | ic.driver = cs->myid; | |
172 | ic.command = ISDN_STAT_PROT; | |
173 | ic.arg = NI1_STAT_INVOKE_ERR; | |
174 | ic.parm.ni1_io.hl_id = pc->prot.ni1.invoke_id; | |
175 | ic.parm.ni1_io.ll_id = pc->prot.ni1.ll_id; | |
176 | ic.parm.ni1_io.proc = pc->prot.ni1.proc; | |
177 | ic.parm.ni1_io.timeout= error; | |
178 | ic.parm.ni1_io.datalen = 0; | |
179 | ic.parm.ni1_io.data = NULL; | |
180 | free_invoke_id(pc->st, pc->prot.ni1.invoke_id); | |
181 | pc->prot.ni1.invoke_id = 0; /* reset id */ | |
182 | ||
183 | cs->iif.statcallb(&ic); | |
184 | ni1_release_l3_process(pc); | |
185 | } | |
186 | else | |
187 | l3_debug(st, "dummy return error id=0x%x error=0x%lx",id,error); | |
188 | } /* l3ni1_error_return */ | |
189 | ||
190 | /*******************************************************************/ | |
191 | /* called when a facility message with a dummy callref is received */ | |
192 | /* and a invoke is delivered. id specifies the invoke id. */ | |
193 | /*******************************************************************/ | |
194 | static void | |
195 | l3ni1_dummy_invoke(struct PStack *st, int cr, int id, | |
196 | int ident, u_char *p, u_char nlen) | |
197 | { isdn_ctrl ic; | |
198 | struct IsdnCardState *cs; | |
199 | ||
200 | l3_debug(st, "dummy invoke %s id=0x%x ident=0x%x datalen=%d", | |
201 | (cr == -1) ? "local" : "broadcast",id,ident,nlen); | |
202 | if (cr >= -1) return; /* ignore local data */ | |
203 | ||
204 | cs = st->l1.hardware; | |
205 | ic.driver = cs->myid; | |
206 | ic.command = ISDN_STAT_PROT; | |
207 | ic.arg = NI1_STAT_INVOKE_BRD; | |
208 | ic.parm.ni1_io.hl_id = id; | |
209 | ic.parm.ni1_io.ll_id = 0; | |
210 | ic.parm.ni1_io.proc = ident; | |
211 | ic.parm.ni1_io.timeout= 0; | |
212 | ic.parm.ni1_io.datalen = nlen; | |
213 | ic.parm.ni1_io.data = p; | |
214 | ||
215 | cs->iif.statcallb(&ic); | |
216 | } /* l3ni1_dummy_invoke */ | |
217 | ||
218 | static void | |
219 | l3ni1_parse_facility(struct PStack *st, struct l3_process *pc, | |
220 | int cr, u_char * p) | |
221 | { | |
222 | int qd_len = 0; | |
223 | unsigned char nlen = 0, ilen, cp_tag; | |
224 | int ident, id; | |
225 | ulong err_ret; | |
226 | ||
227 | if (pc) | |
228 | st = pc->st; /* valid Stack */ | |
229 | else | |
230 | if ((!st) || (cr >= 0)) return; /* neither pc nor st specified */ | |
231 | ||
232 | p++; | |
233 | qd_len = *p++; | |
234 | if (qd_len == 0) { | |
235 | l3_debug(st, "qd_len == 0"); | |
236 | return; | |
237 | } | |
238 | if ((*p & 0x1F) != 0x11) { /* Service discriminator, supplementary service */ | |
239 | l3_debug(st, "supplementary service != 0x11"); | |
240 | return; | |
241 | } | |
242 | while (qd_len > 0 && !(*p & 0x80)) { /* extension ? */ | |
243 | p++; | |
244 | qd_len--; | |
245 | } | |
246 | if (qd_len < 2) { | |
247 | l3_debug(st, "qd_len < 2"); | |
248 | return; | |
249 | } | |
250 | p++; | |
251 | qd_len--; | |
252 | if ((*p & 0xE0) != 0xA0) { /* class and form */ | |
253 | l3_debug(st, "class and form != 0xA0"); | |
254 | return; | |
255 | } | |
256 | ||
257 | cp_tag = *p & 0x1F; /* remember tag value */ | |
258 | ||
259 | p++; | |
260 | qd_len--; | |
261 | if (qd_len < 1) | |
262 | { l3_debug(st, "qd_len < 1"); | |
263 | return; | |
264 | } | |
265 | if (*p & 0x80) | |
266 | { /* length format indefinite or limited */ | |
267 | nlen = *p++ & 0x7F; /* number of len bytes or indefinite */ | |
268 | if ((qd_len-- < ((!nlen) ? 3 : (1 + nlen))) || | |
269 | (nlen > 1)) | |
270 | { l3_debug(st, "length format error or not implemented"); | |
271 | return; | |
272 | } | |
273 | if (nlen == 1) | |
274 | { nlen = *p++; /* complete length */ | |
275 | qd_len--; | |
276 | } | |
277 | else | |
278 | { qd_len -= 2; /* trailing null bytes */ | |
279 | if ((*(p+qd_len)) || (*(p+qd_len+1))) | |
280 | { l3_debug(st,"length format indefinite error"); | |
281 | return; | |
282 | } | |
283 | nlen = qd_len; | |
284 | } | |
285 | } | |
286 | else | |
287 | { nlen = *p++; | |
288 | qd_len--; | |
289 | } | |
290 | if (qd_len < nlen) | |
291 | { l3_debug(st, "qd_len < nlen"); | |
292 | return; | |
293 | } | |
294 | qd_len -= nlen; | |
295 | ||
296 | if (nlen < 2) | |
297 | { l3_debug(st, "nlen < 2"); | |
298 | return; | |
299 | } | |
300 | if (*p != 0x02) | |
301 | { /* invoke identifier tag */ | |
302 | l3_debug(st, "invoke identifier tag !=0x02"); | |
303 | return; | |
304 | } | |
305 | p++; | |
306 | nlen--; | |
307 | if (*p & 0x80) | |
308 | { /* length format */ | |
309 | l3_debug(st, "invoke id length format 2"); | |
310 | return; | |
311 | } | |
312 | ilen = *p++; | |
313 | nlen--; | |
314 | if (ilen > nlen || ilen == 0) | |
315 | { l3_debug(st, "ilen > nlen || ilen == 0"); | |
316 | return; | |
317 | } | |
318 | nlen -= ilen; | |
319 | id = 0; | |
320 | while (ilen > 0) | |
321 | { id = (id << 8) | (*p++ & 0xFF); /* invoke identifier */ | |
322 | ilen--; | |
323 | } | |
324 | ||
325 | switch (cp_tag) { /* component tag */ | |
326 | case 1: /* invoke */ | |
327 | if (nlen < 2) { | |
328 | l3_debug(st, "nlen < 2 22"); | |
329 | return; | |
330 | } | |
331 | if (*p != 0x02) { /* operation value */ | |
332 | l3_debug(st, "operation value !=0x02"); | |
333 | return; | |
334 | } | |
335 | p++; | |
336 | nlen--; | |
337 | ilen = *p++; | |
338 | nlen--; | |
339 | if (ilen > nlen || ilen == 0) { | |
340 | l3_debug(st, "ilen > nlen || ilen == 0 22"); | |
341 | return; | |
342 | } | |
343 | nlen -= ilen; | |
344 | ident = 0; | |
345 | while (ilen > 0) { | |
346 | ident = (ident << 8) | (*p++ & 0xFF); | |
347 | ilen--; | |
348 | } | |
349 | ||
350 | if (!pc) | |
351 | { | |
352 | l3ni1_dummy_invoke(st, cr, id, ident, p, nlen); | |
353 | return; | |
354 | } | |
355 | l3_debug(st, "invoke break"); | |
356 | break; | |
357 | case 2: /* return result */ | |
358 | /* if no process available handle separately */ | |
359 | if (!pc) | |
360 | { if (cr == -1) | |
361 | l3ni1_dummy_return_result(st, id, p, nlen); | |
362 | return; | |
363 | } | |
364 | if ((pc->prot.ni1.invoke_id) && (pc->prot.ni1.invoke_id == id)) | |
365 | { /* Diversion successful */ | |
366 | free_invoke_id(st,pc->prot.ni1.invoke_id); | |
367 | pc->prot.ni1.remote_result = 0; /* success */ | |
368 | pc->prot.ni1.invoke_id = 0; | |
369 | pc->redir_result = pc->prot.ni1.remote_result; | |
370 | st->l3.l3l4(st, CC_REDIR | INDICATION, pc); } /* Diversion successful */ | |
371 | else | |
372 | l3_debug(st,"return error unknown identifier"); | |
373 | break; | |
374 | case 3: /* return error */ | |
375 | err_ret = 0; | |
376 | if (nlen < 2) | |
377 | { l3_debug(st, "return error nlen < 2"); | |
378 | return; | |
379 | } | |
380 | if (*p != 0x02) | |
381 | { /* result tag */ | |
382 | l3_debug(st, "invoke error tag !=0x02"); | |
383 | return; | |
384 | } | |
385 | p++; | |
386 | nlen--; | |
387 | if (*p > 4) | |
388 | { /* length format */ | |
389 | l3_debug(st, "invoke return errlen > 4 "); | |
390 | return; | |
391 | } | |
392 | ilen = *p++; | |
393 | nlen--; | |
394 | if (ilen > nlen || ilen == 0) | |
395 | { l3_debug(st, "error return ilen > nlen || ilen == 0"); | |
396 | return; | |
397 | } | |
398 | nlen -= ilen; | |
399 | while (ilen > 0) | |
400 | { err_ret = (err_ret << 8) | (*p++ & 0xFF); /* error value */ | |
401 | ilen--; | |
402 | } | |
403 | /* if no process available handle separately */ | |
404 | if (!pc) | |
405 | { if (cr == -1) | |
406 | l3ni1_dummy_error_return(st, id, err_ret); | |
407 | return; | |
408 | } | |
409 | if ((pc->prot.ni1.invoke_id) && (pc->prot.ni1.invoke_id == id)) | |
410 | { /* Deflection error */ | |
411 | free_invoke_id(st,pc->prot.ni1.invoke_id); | |
412 | pc->prot.ni1.remote_result = err_ret; /* result */ | |
413 | pc->prot.ni1.invoke_id = 0; | |
414 | pc->redir_result = pc->prot.ni1.remote_result; | |
415 | st->l3.l3l4(st, CC_REDIR | INDICATION, pc); | |
416 | } /* Deflection error */ | |
417 | else | |
418 | l3_debug(st,"return result unknown identifier"); | |
419 | break; | |
420 | default: | |
421 | l3_debug(st, "facility default break tag=0x%02x",cp_tag); | |
422 | break; | |
423 | } | |
424 | } | |
425 | ||
426 | static void | |
427 | l3ni1_message(struct l3_process *pc, u_char mt) | |
428 | { | |
429 | struct sk_buff *skb; | |
430 | u_char *p; | |
431 | ||
432 | if (!(skb = l3_alloc_skb(4))) | |
433 | return; | |
434 | p = skb_put(skb, 4); | |
435 | MsgHead(p, pc->callref, mt); | |
436 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
437 | } | |
438 | ||
439 | static void | |
440 | l3ni1_message_plus_chid(struct l3_process *pc, u_char mt) | |
441 | /* sends an l3 messages plus channel id - added GE 05/09/00 */ | |
442 | { | |
443 | struct sk_buff *skb; | |
444 | u_char tmp[16]; | |
445 | u_char *p = tmp; | |
446 | u_char chid; | |
447 | ||
448 | chid = (u_char)(pc->para.bchannel & 0x03) | 0x88; | |
449 | MsgHead(p, pc->callref, mt); | |
450 | *p++ = IE_CHANNEL_ID; | |
451 | *p++ = 0x01; | |
452 | *p++ = chid; | |
453 | ||
454 | if (!(skb = l3_alloc_skb(7))) | |
455 | return; | |
456 | memcpy(skb_put(skb, 7), tmp, 7); | |
457 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
458 | } | |
459 | ||
460 | static void | |
461 | l3ni1_message_cause(struct l3_process *pc, u_char mt, u_char cause) | |
462 | { | |
463 | struct sk_buff *skb; | |
464 | u_char tmp[16]; | |
465 | u_char *p = tmp; | |
466 | int l; | |
467 | ||
468 | MsgHead(p, pc->callref, mt); | |
469 | *p++ = IE_CAUSE; | |
470 | *p++ = 0x2; | |
471 | *p++ = 0x80; | |
472 | *p++ = cause | 0x80; | |
473 | ||
474 | l = p - tmp; | |
475 | if (!(skb = l3_alloc_skb(l))) | |
476 | return; | |
477 | memcpy(skb_put(skb, l), tmp, l); | |
478 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
479 | } | |
480 | ||
481 | static void | |
482 | l3ni1_status_send(struct l3_process *pc, u_char pr, void *arg) | |
483 | { | |
484 | u_char tmp[16]; | |
485 | u_char *p = tmp; | |
486 | int l; | |
487 | struct sk_buff *skb; | |
488 | ||
489 | MsgHead(p, pc->callref, MT_STATUS); | |
490 | ||
491 | *p++ = IE_CAUSE; | |
492 | *p++ = 0x2; | |
493 | *p++ = 0x80; | |
494 | *p++ = pc->para.cause | 0x80; | |
495 | ||
496 | *p++ = IE_CALL_STATE; | |
497 | *p++ = 0x1; | |
498 | *p++ = pc->state & 0x3f; | |
499 | ||
500 | l = p - tmp; | |
501 | if (!(skb = l3_alloc_skb(l))) | |
502 | return; | |
503 | memcpy(skb_put(skb, l), tmp, l); | |
504 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
505 | } | |
506 | ||
507 | static void | |
508 | l3ni1_msg_without_setup(struct l3_process *pc, u_char pr, void *arg) | |
509 | { | |
510 | /* This routine is called if here was no SETUP made (checks in ni1up and in | |
511 | * l3ni1_setup) and a RELEASE_COMPLETE have to be sent with an error code | |
512 | * MT_STATUS_ENQUIRE in the NULL state is handled too | |
513 | */ | |
514 | u_char tmp[16]; | |
515 | u_char *p = tmp; | |
516 | int l; | |
517 | struct sk_buff *skb; | |
518 | ||
519 | switch (pc->para.cause) { | |
520 | case 81: /* invalid callreference */ | |
521 | case 88: /* incomp destination */ | |
522 | case 96: /* mandory IE missing */ | |
523 | case 100: /* invalid IE contents */ | |
524 | case 101: /* incompatible Callstate */ | |
525 | MsgHead(p, pc->callref, MT_RELEASE_COMPLETE); | |
526 | *p++ = IE_CAUSE; | |
527 | *p++ = 0x2; | |
528 | *p++ = 0x80; | |
529 | *p++ = pc->para.cause | 0x80; | |
530 | break; | |
531 | default: | |
532 | printk(KERN_ERR "HiSax l3ni1_msg_without_setup wrong cause %d\n", | |
533 | pc->para.cause); | |
534 | return; | |
535 | } | |
536 | l = p - tmp; | |
537 | if (!(skb = l3_alloc_skb(l))) | |
538 | return; | |
539 | memcpy(skb_put(skb, l), tmp, l); | |
540 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
541 | ni1_release_l3_process(pc); | |
542 | } | |
543 | ||
544 | static int ie_ALERTING[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1, | |
545 | IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, IE_HLC, | |
546 | IE_USER_USER, -1}; | |
547 | static int ie_CALL_PROCEEDING[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1, | |
548 | IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_HLC, -1}; | |
549 | static int ie_CONNECT[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1, | |
550 | IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_DATE, IE_SIGNAL, | |
551 | IE_CONNECT_PN, IE_CONNECT_SUB, IE_LLC, IE_HLC, IE_USER_USER, -1}; | |
552 | static int ie_CONNECT_ACKNOWLEDGE[] = {IE_CHANNEL_ID, IE_DISPLAY, IE_SIGNAL, -1}; | |
553 | static int ie_DISCONNECT[] = {IE_CAUSE | IE_MANDATORY, IE_FACILITY, | |
554 | IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, IE_USER_USER, -1}; | |
555 | static int ie_INFORMATION[] = {IE_COMPLETE, IE_DISPLAY, IE_KEYPAD, IE_SIGNAL, | |
556 | IE_CALLED_PN, -1}; | |
557 | static int ie_NOTIFY[] = {IE_BEARER, IE_NOTIFY | IE_MANDATORY, IE_DISPLAY, -1}; | |
558 | static int ie_PROGRESS[] = {IE_BEARER, IE_CAUSE, IE_FACILITY, IE_PROGRESS | | |
559 | IE_MANDATORY, IE_DISPLAY, IE_HLC, IE_USER_USER, -1}; | |
560 | static int ie_RELEASE[] = {IE_CAUSE | IE_MANDATORY_1, IE_FACILITY, IE_DISPLAY, | |
561 | IE_SIGNAL, IE_USER_USER, -1}; | |
562 | /* a RELEASE_COMPLETE with errors don't require special actions | |
563 | static int ie_RELEASE_COMPLETE[] = {IE_CAUSE | IE_MANDATORY_1, IE_DISPLAY, IE_SIGNAL, IE_USER_USER, -1}; | |
564 | */ | |
565 | static int ie_RESUME_ACKNOWLEDGE[] = {IE_CHANNEL_ID| IE_MANDATORY, IE_FACILITY, | |
566 | IE_DISPLAY, -1}; | |
567 | static int ie_RESUME_REJECT[] = {IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1}; | |
568 | static int ie_SETUP[] = {IE_COMPLETE, IE_BEARER | IE_MANDATORY, | |
569 | IE_CHANNEL_ID| IE_MANDATORY, IE_FACILITY, IE_PROGRESS, | |
570 | IE_NET_FAC, IE_DISPLAY, IE_KEYPAD, IE_SIGNAL, IE_CALLING_PN, | |
571 | IE_CALLING_SUB, IE_CALLED_PN, IE_CALLED_SUB, IE_REDIR_NR, | |
572 | IE_LLC, IE_HLC, IE_USER_USER, -1}; | |
573 | static int ie_SETUP_ACKNOWLEDGE[] = {IE_CHANNEL_ID | IE_MANDATORY, IE_FACILITY, | |
574 | IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, -1}; | |
575 | static int ie_STATUS[] = {IE_CAUSE | IE_MANDATORY, IE_CALL_STATE | | |
576 | IE_MANDATORY, IE_DISPLAY, -1}; | |
577 | static int ie_STATUS_ENQUIRY[] = {IE_DISPLAY, -1}; | |
578 | static int ie_SUSPEND_ACKNOWLEDGE[] = {IE_DISPLAY, IE_FACILITY, -1}; | |
579 | static int ie_SUSPEND_REJECT[] = {IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1}; | |
580 | /* not used | |
581 | * static int ie_CONGESTION_CONTROL[] = {IE_CONGESTION | IE_MANDATORY, | |
582 | * IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1}; | |
583 | * static int ie_USER_INFORMATION[] = {IE_MORE_DATA, IE_USER_USER | IE_MANDATORY, -1}; | |
584 | * static int ie_RESTART[] = {IE_CHANNEL_ID, IE_DISPLAY, IE_RESTART_IND | | |
585 | * IE_MANDATORY, -1}; | |
586 | */ | |
587 | static int ie_FACILITY[] = {IE_FACILITY | IE_MANDATORY, IE_DISPLAY, -1}; | |
588 | static int comp_required[] = {1,2,3,5,6,7,9,10,11,14,15,-1}; | |
589 | static int l3_valid_states[] = {0,1,2,3,4,6,7,8,9,10,11,12,15,17,19,25,-1}; | |
590 | ||
591 | struct ie_len { | |
592 | int ie; | |
593 | int len; | |
594 | }; | |
595 | ||
596 | static | |
597 | struct ie_len max_ie_len[] = { | |
598 | {IE_SEGMENT, 4}, | |
599 | {IE_BEARER, 12}, | |
600 | {IE_CAUSE, 32}, | |
601 | {IE_CALL_ID, 10}, | |
602 | {IE_CALL_STATE, 3}, | |
603 | {IE_CHANNEL_ID, 34}, | |
604 | {IE_FACILITY, 255}, | |
605 | {IE_PROGRESS, 4}, | |
606 | {IE_NET_FAC, 255}, | |
607 | {IE_NOTIFY, 3}, | |
608 | {IE_DISPLAY, 82}, | |
609 | {IE_DATE, 8}, | |
610 | {IE_KEYPAD, 34}, | |
611 | {IE_SIGNAL, 3}, | |
612 | {IE_INFORATE, 6}, | |
613 | {IE_E2E_TDELAY, 11}, | |
614 | {IE_TDELAY_SEL, 5}, | |
615 | {IE_PACK_BINPARA, 3}, | |
616 | {IE_PACK_WINSIZE, 4}, | |
617 | {IE_PACK_SIZE, 4}, | |
618 | {IE_CUG, 7}, | |
619 | {IE_REV_CHARGE, 3}, | |
620 | {IE_CALLING_PN, 24}, | |
621 | {IE_CALLING_SUB, 23}, | |
622 | {IE_CALLED_PN, 24}, | |
623 | {IE_CALLED_SUB, 23}, | |
624 | {IE_REDIR_NR, 255}, | |
625 | {IE_TRANS_SEL, 255}, | |
626 | {IE_RESTART_IND, 3}, | |
627 | {IE_LLC, 18}, | |
628 | {IE_HLC, 5}, | |
629 | {IE_USER_USER, 131}, | |
630 | {-1,0}, | |
631 | }; | |
632 | ||
633 | static int | |
634 | getmax_ie_len(u_char ie) { | |
635 | int i = 0; | |
636 | while (max_ie_len[i].ie != -1) { | |
637 | if (max_ie_len[i].ie == ie) | |
638 | return(max_ie_len[i].len); | |
639 | i++; | |
640 | } | |
641 | return(255); | |
642 | } | |
643 | ||
644 | static int | |
645 | ie_in_set(struct l3_process *pc, u_char ie, int *checklist) { | |
646 | int ret = 1; | |
647 | ||
648 | while (*checklist != -1) { | |
649 | if ((*checklist & 0xff) == ie) { | |
650 | if (ie & 0x80) | |
651 | return(-ret); | |
652 | else | |
653 | return(ret); | |
654 | } | |
655 | ret++; | |
656 | checklist++; | |
657 | } | |
658 | return(0); | |
659 | } | |
660 | ||
661 | static int | |
662 | check_infoelements(struct l3_process *pc, struct sk_buff *skb, int *checklist) | |
663 | { | |
664 | int *cl = checklist; | |
665 | u_char mt; | |
666 | u_char *p, ie; | |
667 | int l, newpos, oldpos; | |
668 | int err_seq = 0, err_len = 0, err_compr = 0, err_ureg = 0; | |
669 | u_char codeset = 0; | |
670 | u_char old_codeset = 0; | |
671 | u_char codelock = 1; | |
672 | ||
673 | p = skb->data; | |
674 | /* skip cr */ | |
675 | p++; | |
676 | l = (*p++) & 0xf; | |
677 | p += l; | |
678 | mt = *p++; | |
679 | oldpos = 0; | |
680 | while ((p - skb->data) < skb->len) { | |
681 | if ((*p & 0xf0) == 0x90) { /* shift codeset */ | |
682 | old_codeset = codeset; | |
683 | codeset = *p & 7; | |
684 | if (*p & 0x08) | |
685 | codelock = 0; | |
686 | else | |
687 | codelock = 1; | |
688 | if (pc->debug & L3_DEB_CHECK) | |
689 | l3_debug(pc->st, "check IE shift%scodeset %d->%d", | |
690 | codelock ? " locking ": " ", old_codeset, codeset); | |
691 | p++; | |
692 | continue; | |
693 | } | |
694 | if (!codeset) { /* only codeset 0 */ | |
695 | if ((newpos = ie_in_set(pc, *p, cl))) { | |
696 | if (newpos > 0) { | |
697 | if (newpos < oldpos) | |
698 | err_seq++; | |
699 | else | |
700 | oldpos = newpos; | |
701 | } | |
702 | } else { | |
703 | if (ie_in_set(pc, *p, comp_required)) | |
704 | err_compr++; | |
705 | else | |
706 | err_ureg++; | |
707 | } | |
708 | } | |
709 | ie = *p++; | |
710 | if (ie & 0x80) { | |
711 | l = 1; | |
712 | } else { | |
713 | l = *p++; | |
714 | p += l; | |
715 | l += 2; | |
716 | } | |
717 | if (!codeset && (l > getmax_ie_len(ie))) | |
718 | err_len++; | |
719 | if (!codelock) { | |
720 | if (pc->debug & L3_DEB_CHECK) | |
721 | l3_debug(pc->st, "check IE shift back codeset %d->%d", | |
722 | codeset, old_codeset); | |
723 | codeset = old_codeset; | |
724 | codelock = 1; | |
725 | } | |
726 | } | |
727 | if (err_compr | err_ureg | err_len | err_seq) { | |
728 | if (pc->debug & L3_DEB_CHECK) | |
729 | l3_debug(pc->st, "check IE MT(%x) %d/%d/%d/%d", | |
730 | mt, err_compr, err_ureg, err_len, err_seq); | |
731 | if (err_compr) | |
732 | return(ERR_IE_COMPREHENSION); | |
733 | if (err_ureg) | |
734 | return(ERR_IE_UNRECOGNIZED); | |
735 | if (err_len) | |
736 | return(ERR_IE_LENGTH); | |
737 | if (err_seq) | |
738 | return(ERR_IE_SEQUENCE); | |
739 | } | |
740 | return(0); | |
741 | } | |
742 | ||
743 | /* verify if a message type exists and contain no IE error */ | |
744 | static int | |
745 | l3ni1_check_messagetype_validity(struct l3_process *pc, int mt, void *arg) | |
746 | { | |
747 | switch (mt) { | |
748 | case MT_ALERTING: | |
749 | case MT_CALL_PROCEEDING: | |
750 | case MT_CONNECT: | |
751 | case MT_CONNECT_ACKNOWLEDGE: | |
752 | case MT_DISCONNECT: | |
753 | case MT_INFORMATION: | |
754 | case MT_FACILITY: | |
755 | case MT_NOTIFY: | |
756 | case MT_PROGRESS: | |
757 | case MT_RELEASE: | |
758 | case MT_RELEASE_COMPLETE: | |
759 | case MT_SETUP: | |
760 | case MT_SETUP_ACKNOWLEDGE: | |
761 | case MT_RESUME_ACKNOWLEDGE: | |
762 | case MT_RESUME_REJECT: | |
763 | case MT_SUSPEND_ACKNOWLEDGE: | |
764 | case MT_SUSPEND_REJECT: | |
765 | case MT_USER_INFORMATION: | |
766 | case MT_RESTART: | |
767 | case MT_RESTART_ACKNOWLEDGE: | |
768 | case MT_CONGESTION_CONTROL: | |
769 | case MT_STATUS: | |
770 | case MT_STATUS_ENQUIRY: | |
771 | if (pc->debug & L3_DEB_CHECK) | |
772 | l3_debug(pc->st, "l3ni1_check_messagetype_validity mt(%x) OK", mt); | |
773 | break; | |
774 | case MT_RESUME: /* RESUME only in user->net */ | |
775 | case MT_SUSPEND: /* SUSPEND only in user->net */ | |
776 | default: | |
777 | if (pc->debug & (L3_DEB_CHECK | L3_DEB_WARN)) | |
778 | l3_debug(pc->st, "l3ni1_check_messagetype_validity mt(%x) fail", mt); | |
779 | pc->para.cause = 97; | |
780 | l3ni1_status_send(pc, 0, NULL); | |
781 | return(1); | |
782 | } | |
783 | return(0); | |
784 | } | |
785 | ||
786 | static void | |
787 | l3ni1_std_ie_err(struct l3_process *pc, int ret) { | |
788 | ||
789 | if (pc->debug & L3_DEB_CHECK) | |
790 | l3_debug(pc->st, "check_infoelements ret %d", ret); | |
791 | switch(ret) { | |
792 | case 0: | |
793 | break; | |
794 | case ERR_IE_COMPREHENSION: | |
795 | pc->para.cause = 96; | |
796 | l3ni1_status_send(pc, 0, NULL); | |
797 | break; | |
798 | case ERR_IE_UNRECOGNIZED: | |
799 | pc->para.cause = 99; | |
800 | l3ni1_status_send(pc, 0, NULL); | |
801 | break; | |
802 | case ERR_IE_LENGTH: | |
803 | pc->para.cause = 100; | |
804 | l3ni1_status_send(pc, 0, NULL); | |
805 | break; | |
806 | case ERR_IE_SEQUENCE: | |
807 | default: | |
808 | break; | |
809 | } | |
810 | } | |
811 | ||
812 | static int | |
813 | l3ni1_get_channel_id(struct l3_process *pc, struct sk_buff *skb) { | |
814 | u_char *p; | |
815 | ||
816 | p = skb->data; | |
817 | if ((p = findie(p, skb->len, IE_CHANNEL_ID, 0))) { | |
818 | p++; | |
819 | if (*p != 1) { /* len for BRI = 1 */ | |
820 | if (pc->debug & L3_DEB_WARN) | |
821 | l3_debug(pc->st, "wrong chid len %d", *p); | |
822 | return (-2); | |
823 | } | |
824 | p++; | |
825 | if (*p & 0x60) { /* only base rate interface */ | |
826 | if (pc->debug & L3_DEB_WARN) | |
827 | l3_debug(pc->st, "wrong chid %x", *p); | |
828 | return (-3); | |
829 | } | |
830 | return(*p & 0x3); | |
831 | } else | |
832 | return(-1); | |
833 | } | |
834 | ||
835 | static int | |
836 | l3ni1_get_cause(struct l3_process *pc, struct sk_buff *skb) { | |
837 | u_char l, i=0; | |
838 | u_char *p; | |
839 | ||
840 | p = skb->data; | |
841 | pc->para.cause = 31; | |
842 | pc->para.loc = 0; | |
843 | if ((p = findie(p, skb->len, IE_CAUSE, 0))) { | |
844 | p++; | |
845 | l = *p++; | |
846 | if (l>30) | |
847 | return(1); | |
848 | if (l) { | |
849 | pc->para.loc = *p++; | |
850 | l--; | |
851 | } else { | |
852 | return(2); | |
853 | } | |
854 | if (l && !(pc->para.loc & 0x80)) { | |
855 | l--; | |
856 | p++; /* skip recommendation */ | |
857 | } | |
858 | if (l) { | |
859 | pc->para.cause = *p++; | |
860 | l--; | |
861 | if (!(pc->para.cause & 0x80)) | |
862 | return(3); | |
863 | } else | |
864 | return(4); | |
865 | while (l && (i<6)) { | |
866 | pc->para.diag[i++] = *p++; | |
867 | l--; | |
868 | } | |
869 | } else | |
870 | return(-1); | |
871 | return(0); | |
872 | } | |
873 | ||
874 | static void | |
875 | l3ni1_msg_with_uus(struct l3_process *pc, u_char cmd) | |
876 | { | |
877 | struct sk_buff *skb; | |
878 | u_char tmp[16+40]; | |
879 | u_char *p = tmp; | |
880 | int l; | |
881 | ||
882 | MsgHead(p, pc->callref, cmd); | |
883 | ||
884 | if (pc->prot.ni1.uus1_data[0]) | |
885 | { *p++ = IE_USER_USER; /* UUS info element */ | |
886 | *p++ = strlen(pc->prot.ni1.uus1_data) + 1; | |
887 | *p++ = 0x04; /* IA5 chars */ | |
888 | strcpy(p,pc->prot.ni1.uus1_data); | |
889 | p += strlen(pc->prot.ni1.uus1_data); | |
890 | pc->prot.ni1.uus1_data[0] = '\0'; | |
891 | } | |
892 | ||
893 | l = p - tmp; | |
894 | if (!(skb = l3_alloc_skb(l))) | |
895 | return; | |
896 | memcpy(skb_put(skb, l), tmp, l); | |
897 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
898 | } /* l3ni1_msg_with_uus */ | |
899 | ||
900 | static void | |
901 | l3ni1_release_req(struct l3_process *pc, u_char pr, void *arg) | |
902 | { | |
903 | StopAllL3Timer(pc); | |
904 | newl3state(pc, 19); | |
905 | if (!pc->prot.ni1.uus1_data[0]) | |
906 | l3ni1_message(pc, MT_RELEASE); | |
907 | else | |
908 | l3ni1_msg_with_uus(pc, MT_RELEASE); | |
909 | L3AddTimer(&pc->timer, T308, CC_T308_1); | |
910 | } | |
911 | ||
912 | static void | |
913 | l3ni1_release_cmpl(struct l3_process *pc, u_char pr, void *arg) | |
914 | { | |
915 | struct sk_buff *skb = arg; | |
916 | int ret; | |
917 | ||
918 | if ((ret = l3ni1_get_cause(pc, skb))>0) { | |
919 | if (pc->debug & L3_DEB_WARN) | |
920 | l3_debug(pc->st, "RELCMPL get_cause ret(%d)",ret); | |
921 | } else if (ret < 0) | |
922 | pc->para.cause = NO_CAUSE; | |
923 | StopAllL3Timer(pc); | |
924 | newl3state(pc, 0); | |
925 | pc->st->l3.l3l4(pc->st, CC_RELEASE | CONFIRM, pc); | |
926 | ni1_release_l3_process(pc); | |
927 | } | |
928 | ||
929 | #if EXT_BEARER_CAPS | |
930 | ||
931 | static u_char * | |
932 | EncodeASyncParams(u_char * p, u_char si2) | |
933 | { // 7c 06 88 90 21 42 00 bb | |
934 | ||
935 | p[0] = 0; | |
936 | p[1] = 0x40; // Intermediate rate: 16 kbit/s jj 2000.02.19 | |
937 | p[2] = 0x80; | |
938 | if (si2 & 32) // 7 data bits | |
939 | ||
940 | p[2] += 16; | |
941 | else // 8 data bits | |
942 | ||
943 | p[2] += 24; | |
944 | ||
945 | if (si2 & 16) // 2 stop bits | |
946 | ||
947 | p[2] += 96; | |
948 | else // 1 stop bit | |
949 | ||
950 | p[2] += 32; | |
951 | ||
952 | if (si2 & 8) // even parity | |
953 | ||
954 | p[2] += 2; | |
955 | else // no parity | |
956 | ||
957 | p[2] += 3; | |
958 | ||
959 | switch (si2 & 0x07) { | |
960 | case 0: | |
961 | p[0] = 66; // 1200 bit/s | |
962 | ||
963 | break; | |
964 | case 1: | |
965 | p[0] = 88; // 1200/75 bit/s | |
966 | ||
967 | break; | |
968 | case 2: | |
969 | p[0] = 87; // 75/1200 bit/s | |
970 | ||
971 | break; | |
972 | case 3: | |
973 | p[0] = 67; // 2400 bit/s | |
974 | ||
975 | break; | |
976 | case 4: | |
977 | p[0] = 69; // 4800 bit/s | |
978 | ||
979 | break; | |
980 | case 5: | |
981 | p[0] = 72; // 9600 bit/s | |
982 | ||
983 | break; | |
984 | case 6: | |
985 | p[0] = 73; // 14400 bit/s | |
986 | ||
987 | break; | |
988 | case 7: | |
989 | p[0] = 75; // 19200 bit/s | |
990 | ||
991 | break; | |
992 | } | |
993 | return p + 3; | |
994 | } | |
995 | ||
996 | static u_char | |
997 | EncodeSyncParams(u_char si2, u_char ai) | |
998 | { | |
999 | ||
1000 | switch (si2) { | |
1001 | case 0: | |
1002 | return ai + 2; // 1200 bit/s | |
1003 | ||
1004 | case 1: | |
1005 | return ai + 24; // 1200/75 bit/s | |
1006 | ||
1007 | case 2: | |
1008 | return ai + 23; // 75/1200 bit/s | |
1009 | ||
1010 | case 3: | |
1011 | return ai + 3; // 2400 bit/s | |
1012 | ||
1013 | case 4: | |
1014 | return ai + 5; // 4800 bit/s | |
1015 | ||
1016 | case 5: | |
1017 | return ai + 8; // 9600 bit/s | |
1018 | ||
1019 | case 6: | |
1020 | return ai + 9; // 14400 bit/s | |
1021 | ||
1022 | case 7: | |
1023 | return ai + 11; // 19200 bit/s | |
1024 | ||
1025 | case 8: | |
1026 | return ai + 14; // 48000 bit/s | |
1027 | ||
1028 | case 9: | |
1029 | return ai + 15; // 56000 bit/s | |
1030 | ||
1031 | case 15: | |
1032 | return ai + 40; // negotiate bit/s | |
1033 | ||
1034 | default: | |
1035 | break; | |
1036 | } | |
1037 | return ai; | |
1038 | } | |
1039 | ||
1040 | ||
1041 | static u_char | |
1042 | DecodeASyncParams(u_char si2, u_char * p) | |
1043 | { | |
1044 | u_char info; | |
1045 | ||
1046 | switch (p[5]) { | |
1047 | case 66: // 1200 bit/s | |
1048 | ||
1049 | break; // si2 don't change | |
1050 | ||
1051 | case 88: // 1200/75 bit/s | |
1052 | ||
1053 | si2 += 1; | |
1054 | break; | |
1055 | case 87: // 75/1200 bit/s | |
1056 | ||
1057 | si2 += 2; | |
1058 | break; | |
1059 | case 67: // 2400 bit/s | |
1060 | ||
1061 | si2 += 3; | |
1062 | break; | |
1063 | case 69: // 4800 bit/s | |
1064 | ||
1065 | si2 += 4; | |
1066 | break; | |
1067 | case 72: // 9600 bit/s | |
1068 | ||
1069 | si2 += 5; | |
1070 | break; | |
1071 | case 73: // 14400 bit/s | |
1072 | ||
1073 | si2 += 6; | |
1074 | break; | |
1075 | case 75: // 19200 bit/s | |
1076 | ||
1077 | si2 += 7; | |
1078 | break; | |
1079 | } | |
1080 | ||
1081 | info = p[7] & 0x7f; | |
1082 | if ((info & 16) && (!(info & 8))) // 7 data bits | |
1083 | ||
1084 | si2 += 32; // else 8 data bits | |
1085 | ||
1086 | if ((info & 96) == 96) // 2 stop bits | |
1087 | ||
1088 | si2 += 16; // else 1 stop bit | |
1089 | ||
1090 | if ((info & 2) && (!(info & 1))) // even parity | |
1091 | ||
1092 | si2 += 8; // else no parity | |
1093 | ||
1094 | return si2; | |
1095 | } | |
1096 | ||
1097 | ||
1098 | static u_char | |
1099 | DecodeSyncParams(u_char si2, u_char info) | |
1100 | { | |
1101 | info &= 0x7f; | |
1102 | switch (info) { | |
1103 | case 40: // bit/s negotiation failed ai := 165 not 175! | |
1104 | ||
1105 | return si2 + 15; | |
1106 | case 15: // 56000 bit/s failed, ai := 0 not 169 ! | |
1107 | ||
1108 | return si2 + 9; | |
1109 | case 14: // 48000 bit/s | |
1110 | ||
1111 | return si2 + 8; | |
1112 | case 11: // 19200 bit/s | |
1113 | ||
1114 | return si2 + 7; | |
1115 | case 9: // 14400 bit/s | |
1116 | ||
1117 | return si2 + 6; | |
1118 | case 8: // 9600 bit/s | |
1119 | ||
1120 | return si2 + 5; | |
1121 | case 5: // 4800 bit/s | |
1122 | ||
1123 | return si2 + 4; | |
1124 | case 3: // 2400 bit/s | |
1125 | ||
1126 | return si2 + 3; | |
1127 | case 23: // 75/1200 bit/s | |
1128 | ||
1129 | return si2 + 2; | |
1130 | case 24: // 1200/75 bit/s | |
1131 | ||
1132 | return si2 + 1; | |
1133 | default: // 1200 bit/s | |
1134 | ||
1135 | return si2; | |
1136 | } | |
1137 | } | |
1138 | ||
1139 | static u_char | |
1140 | DecodeSI2(struct sk_buff *skb) | |
1141 | { | |
1142 | u_char *p; //, *pend=skb->data + skb->len; | |
1143 | ||
1144 | if ((p = findie(skb->data, skb->len, 0x7c, 0))) { | |
1145 | switch (p[4] & 0x0f) { | |
1146 | case 0x01: | |
1147 | if (p[1] == 0x04) // sync. Bitratenadaption | |
1148 | ||
1149 | return DecodeSyncParams(160, p[5]); // V.110/X.30 | |
1150 | ||
1151 | else if (p[1] == 0x06) // async. Bitratenadaption | |
1152 | ||
1153 | return DecodeASyncParams(192, p); // V.110/X.30 | |
1154 | ||
1155 | break; | |
1156 | case 0x08: // if (p[5] == 0x02) // sync. Bitratenadaption | |
1157 | if (p[1] > 3) | |
1158 | return DecodeSyncParams(176, p[5]); // V.120 | |
1159 | break; | |
1160 | } | |
1161 | } | |
1162 | return 0; | |
1163 | } | |
1164 | ||
1165 | #endif | |
1166 | ||
1167 | ||
1168 | static void | |
1169 | l3ni1_setup_req(struct l3_process *pc, u_char pr, | |
1170 | void *arg) | |
1171 | { | |
1172 | struct sk_buff *skb; | |
1173 | u_char tmp[128]; | |
1174 | u_char *p = tmp; | |
1175 | ||
1176 | u_char *teln; | |
1177 | u_char *sub; | |
1178 | u_char *sp; | |
1179 | int l; | |
1180 | ||
1181 | MsgHead(p, pc->callref, MT_SETUP); | |
1182 | ||
1183 | teln = pc->para.setup.phone; | |
1184 | ||
1185 | *p++ = 0xa1; /* complete indicator */ | |
1186 | /* | |
1187 | * Set Bearer Capability, Map info from 1TR6-convention to NI1 | |
1188 | */ | |
1189 | switch (pc->para.setup.si1) { | |
1190 | case 1: /* Telephony */ | |
1191 | *p++ = IE_BEARER; | |
1192 | *p++ = 0x3; /* Length */ | |
1193 | *p++ = 0x90; /* 3.1khz Audio */ | |
1194 | *p++ = 0x90; /* Circuit-Mode 64kbps */ | |
1195 | *p++ = 0xa2; /* u-Law Audio */ | |
1196 | break; | |
1197 | case 5: /* Datatransmission 64k, BTX */ | |
1198 | case 7: /* Datatransmission 64k */ | |
1199 | default: | |
1200 | *p++ = IE_BEARER; | |
1201 | *p++ = 0x2; /* Length */ | |
1202 | *p++ = 0x88; /* Coding Std. CCITT, unrestr. dig. Inform. */ | |
1203 | *p++ = 0x90; /* Circuit-Mode 64kbps */ | |
1204 | break; | |
1205 | } | |
1206 | ||
1207 | sub = NULL; | |
1208 | sp = teln; | |
1209 | while (*sp) { | |
1210 | if ('.' == *sp) { | |
1211 | sub = sp; | |
1212 | *sp = 0; | |
1213 | } else | |
1214 | sp++; | |
1215 | } | |
1216 | ||
1217 | *p++ = IE_KEYPAD; | |
1218 | *p++ = strlen(teln); | |
1219 | while (*teln) | |
1220 | *p++ = (*teln++) & 0x7F; | |
1221 | ||
1222 | if (sub) | |
1223 | *sub++ = '.'; | |
1224 | ||
1225 | #if EXT_BEARER_CAPS | |
1226 | if ((pc->para.setup.si2 >= 160) && (pc->para.setup.si2 <= 175)) { // sync. Bitratenadaption, V.110/X.30 | |
1227 | ||
1228 | *p++ = IE_LLC; | |
1229 | *p++ = 0x04; | |
1230 | *p++ = 0x88; | |
1231 | *p++ = 0x90; | |
1232 | *p++ = 0x21; | |
1233 | *p++ = EncodeSyncParams(pc->para.setup.si2 - 160, 0x80); | |
1234 | } else if ((pc->para.setup.si2 >= 176) && (pc->para.setup.si2 <= 191)) { // sync. Bitratenadaption, V.120 | |
1235 | ||
1236 | *p++ = IE_LLC; | |
1237 | *p++ = 0x05; | |
1238 | *p++ = 0x88; | |
1239 | *p++ = 0x90; | |
1240 | *p++ = 0x28; | |
1241 | *p++ = EncodeSyncParams(pc->para.setup.si2 - 176, 0); | |
1242 | *p++ = 0x82; | |
1243 | } else if (pc->para.setup.si2 >= 192) { // async. Bitratenadaption, V.110/X.30 | |
1244 | ||
1245 | *p++ = IE_LLC; | |
1246 | *p++ = 0x06; | |
1247 | *p++ = 0x88; | |
1248 | *p++ = 0x90; | |
1249 | *p++ = 0x21; | |
1250 | p = EncodeASyncParams(p, pc->para.setup.si2 - 192); | |
1251 | } else { | |
1252 | switch (pc->para.setup.si1) { | |
1253 | case 1: /* Telephony */ | |
1254 | *p++ = IE_LLC; | |
1255 | *p++ = 0x3; /* Length */ | |
1256 | *p++ = 0x90; /* Coding Std. CCITT, 3.1 kHz audio */ | |
1257 | *p++ = 0x90; /* Circuit-Mode 64kbps */ | |
1258 | *p++ = 0xa2; /* u-Law Audio */ | |
1259 | break; | |
1260 | case 5: /* Datatransmission 64k, BTX */ | |
1261 | case 7: /* Datatransmission 64k */ | |
1262 | default: | |
1263 | *p++ = IE_LLC; | |
1264 | *p++ = 0x2; /* Length */ | |
1265 | *p++ = 0x88; /* Coding Std. CCITT, unrestr. dig. Inform. */ | |
1266 | *p++ = 0x90; /* Circuit-Mode 64kbps */ | |
1267 | break; | |
1268 | } | |
1269 | } | |
1270 | #endif | |
1271 | l = p - tmp; | |
1272 | if (!(skb = l3_alloc_skb(l))) | |
1273 | { | |
1274 | return; | |
1275 | } | |
1276 | memcpy(skb_put(skb, l), tmp, l); | |
1277 | L3DelTimer(&pc->timer); | |
1278 | L3AddTimer(&pc->timer, T303, CC_T303); | |
1279 | newl3state(pc, 1); | |
1280 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
1281 | } | |
1282 | ||
1283 | static void | |
1284 | l3ni1_call_proc(struct l3_process *pc, u_char pr, void *arg) | |
1285 | { | |
1286 | struct sk_buff *skb = arg; | |
1287 | int id, ret; | |
1288 | ||
1289 | if ((id = l3ni1_get_channel_id(pc, skb)) >= 0) { | |
1290 | if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) { | |
1291 | if (pc->debug & L3_DEB_WARN) | |
1292 | l3_debug(pc->st, "setup answer with wrong chid %x", id); | |
1293 | pc->para.cause = 100; | |
1294 | l3ni1_status_send(pc, pr, NULL); | |
1295 | return; | |
1296 | } | |
1297 | pc->para.bchannel = id; | |
1298 | } else if (1 == pc->state) { | |
1299 | if (pc->debug & L3_DEB_WARN) | |
1300 | l3_debug(pc->st, "setup answer wrong chid (ret %d)", id); | |
1301 | if (id == -1) | |
1302 | pc->para.cause = 96; | |
1303 | else | |
1304 | pc->para.cause = 100; | |
1305 | l3ni1_status_send(pc, pr, NULL); | |
1306 | return; | |
1307 | } | |
1308 | /* Now we are on none mandatory IEs */ | |
1309 | ret = check_infoelements(pc, skb, ie_CALL_PROCEEDING); | |
1310 | if (ERR_IE_COMPREHENSION == ret) { | |
1311 | l3ni1_std_ie_err(pc, ret); | |
1312 | return; | |
1313 | } | |
1314 | L3DelTimer(&pc->timer); | |
1315 | newl3state(pc, 3); | |
1316 | L3AddTimer(&pc->timer, T310, CC_T310); | |
1317 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
1318 | l3ni1_std_ie_err(pc, ret); | |
1319 | pc->st->l3.l3l4(pc->st, CC_PROCEEDING | INDICATION, pc); | |
1320 | } | |
1321 | ||
1322 | static void | |
1323 | l3ni1_setup_ack(struct l3_process *pc, u_char pr, void *arg) | |
1324 | { | |
1325 | struct sk_buff *skb = arg; | |
1326 | int id, ret; | |
1327 | ||
1328 | if ((id = l3ni1_get_channel_id(pc, skb)) >= 0) { | |
1329 | if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) { | |
1330 | if (pc->debug & L3_DEB_WARN) | |
1331 | l3_debug(pc->st, "setup answer with wrong chid %x", id); | |
1332 | pc->para.cause = 100; | |
1333 | l3ni1_status_send(pc, pr, NULL); | |
1334 | return; | |
1335 | } | |
1336 | pc->para.bchannel = id; | |
1337 | } else { | |
1338 | if (pc->debug & L3_DEB_WARN) | |
1339 | l3_debug(pc->st, "setup answer wrong chid (ret %d)", id); | |
1340 | if (id == -1) | |
1341 | pc->para.cause = 96; | |
1342 | else | |
1343 | pc->para.cause = 100; | |
1344 | l3ni1_status_send(pc, pr, NULL); | |
1345 | return; | |
1346 | } | |
1347 | /* Now we are on none mandatory IEs */ | |
1348 | ret = check_infoelements(pc, skb, ie_SETUP_ACKNOWLEDGE); | |
1349 | if (ERR_IE_COMPREHENSION == ret) { | |
1350 | l3ni1_std_ie_err(pc, ret); | |
1351 | return; | |
1352 | } | |
1353 | L3DelTimer(&pc->timer); | |
1354 | newl3state(pc, 2); | |
1355 | L3AddTimer(&pc->timer, T304, CC_T304); | |
1356 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
1357 | l3ni1_std_ie_err(pc, ret); | |
1358 | pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc); | |
1359 | } | |
1360 | ||
1361 | static void | |
1362 | l3ni1_disconnect(struct l3_process *pc, u_char pr, void *arg) | |
1363 | { | |
1364 | struct sk_buff *skb = arg; | |
1365 | u_char *p; | |
1366 | int ret; | |
1367 | u_char cause = 0; | |
1368 | ||
1369 | StopAllL3Timer(pc); | |
1370 | if ((ret = l3ni1_get_cause(pc, skb))) { | |
1371 | if (pc->debug & L3_DEB_WARN) | |
1372 | l3_debug(pc->st, "DISC get_cause ret(%d)", ret); | |
1373 | if (ret < 0) | |
1374 | cause = 96; | |
1375 | else if (ret > 0) | |
1376 | cause = 100; | |
1377 | } | |
1378 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) | |
1379 | l3ni1_parse_facility(pc->st, pc, pc->callref, p); | |
1380 | ret = check_infoelements(pc, skb, ie_DISCONNECT); | |
1381 | if (ERR_IE_COMPREHENSION == ret) | |
1382 | cause = 96; | |
1383 | else if ((!cause) && (ERR_IE_UNRECOGNIZED == ret)) | |
1384 | cause = 99; | |
1385 | ret = pc->state; | |
1386 | newl3state(pc, 12); | |
1387 | if (cause) | |
1388 | newl3state(pc, 19); | |
1389 | if (11 != ret) | |
1390 | pc->st->l3.l3l4(pc->st, CC_DISCONNECT | INDICATION, pc); | |
1391 | else if (!cause) | |
1392 | l3ni1_release_req(pc, pr, NULL); | |
1393 | if (cause) { | |
1394 | l3ni1_message_cause(pc, MT_RELEASE, cause); | |
1395 | L3AddTimer(&pc->timer, T308, CC_T308_1); | |
1396 | } | |
1397 | } | |
1398 | ||
1399 | static void | |
1400 | l3ni1_connect(struct l3_process *pc, u_char pr, void *arg) | |
1401 | { | |
1402 | struct sk_buff *skb = arg; | |
1403 | int ret; | |
1404 | ||
1405 | ret = check_infoelements(pc, skb, ie_CONNECT); | |
1406 | if (ERR_IE_COMPREHENSION == ret) { | |
1407 | l3ni1_std_ie_err(pc, ret); | |
1408 | return; | |
1409 | } | |
1410 | L3DelTimer(&pc->timer); /* T310 */ | |
1411 | newl3state(pc, 10); | |
1412 | pc->para.chargeinfo = 0; | |
1413 | /* here should inserted COLP handling KKe */ | |
1414 | if (ret) | |
1415 | l3ni1_std_ie_err(pc, ret); | |
1416 | pc->st->l3.l3l4(pc->st, CC_SETUP | CONFIRM, pc); | |
1417 | } | |
1418 | ||
1419 | static void | |
1420 | l3ni1_alerting(struct l3_process *pc, u_char pr, void *arg) | |
1421 | { | |
1422 | struct sk_buff *skb = arg; | |
1423 | int ret; | |
1424 | ||
1425 | ret = check_infoelements(pc, skb, ie_ALERTING); | |
1426 | if (ERR_IE_COMPREHENSION == ret) { | |
1427 | l3ni1_std_ie_err(pc, ret); | |
1428 | return; | |
1429 | } | |
1430 | L3DelTimer(&pc->timer); /* T304 */ | |
1431 | newl3state(pc, 4); | |
1432 | if (ret) | |
1433 | l3ni1_std_ie_err(pc, ret); | |
1434 | pc->st->l3.l3l4(pc->st, CC_ALERTING | INDICATION, pc); | |
1435 | } | |
1436 | ||
1437 | static void | |
1438 | l3ni1_setup(struct l3_process *pc, u_char pr, void *arg) | |
1439 | { | |
1440 | u_char *p; | |
1441 | int bcfound = 0; | |
1442 | char tmp[80]; | |
1443 | struct sk_buff *skb = arg; | |
1444 | int id; | |
1445 | int err = 0; | |
1446 | ||
1447 | /* | |
1448 | * Bearer Capabilities | |
1449 | */ | |
1450 | p = skb->data; | |
1451 | /* only the first occurence 'll be detected ! */ | |
1452 | if ((p = findie(p, skb->len, 0x04, 0))) { | |
1453 | if ((p[1] < 2) || (p[1] > 11)) | |
1454 | err = 1; | |
1455 | else { | |
1456 | pc->para.setup.si2 = 0; | |
1457 | switch (p[2] & 0x7f) { | |
1458 | case 0x00: /* Speech */ | |
1459 | case 0x10: /* 3.1 Khz audio */ | |
1460 | pc->para.setup.si1 = 1; | |
1461 | break; | |
1462 | case 0x08: /* Unrestricted digital information */ | |
1463 | pc->para.setup.si1 = 7; | |
1464 | /* JIM, 05.11.97 I wanna set service indicator 2 */ | |
1465 | #if EXT_BEARER_CAPS | |
1466 | pc->para.setup.si2 = DecodeSI2(skb); | |
1467 | #endif | |
1468 | break; | |
1469 | case 0x09: /* Restricted digital information */ | |
1470 | pc->para.setup.si1 = 2; | |
1471 | break; | |
1472 | case 0x11: | |
1473 | /* Unrestr. digital information with | |
1474 | * tones/announcements ( or 7 kHz audio | |
1475 | */ | |
1476 | pc->para.setup.si1 = 3; | |
1477 | break; | |
1478 | case 0x18: /* Video */ | |
1479 | pc->para.setup.si1 = 4; | |
1480 | break; | |
1481 | default: | |
1482 | err = 2; | |
1483 | break; | |
1484 | } | |
1485 | switch (p[3] & 0x7f) { | |
1486 | case 0x40: /* packed mode */ | |
1487 | pc->para.setup.si1 = 8; | |
1488 | break; | |
1489 | case 0x10: /* 64 kbit */ | |
1490 | case 0x11: /* 2*64 kbit */ | |
1491 | case 0x13: /* 384 kbit */ | |
1492 | case 0x15: /* 1536 kbit */ | |
1493 | case 0x17: /* 1920 kbit */ | |
1494 | pc->para.moderate = p[3] & 0x7f; | |
1495 | break; | |
1496 | default: | |
1497 | err = 3; | |
1498 | break; | |
1499 | } | |
1500 | } | |
1501 | if (pc->debug & L3_DEB_SI) | |
1502 | l3_debug(pc->st, "SI=%d, AI=%d", | |
1503 | pc->para.setup.si1, pc->para.setup.si2); | |
1504 | if (err) { | |
1505 | if (pc->debug & L3_DEB_WARN) | |
1506 | l3_debug(pc->st, "setup with wrong bearer(l=%d:%x,%x)", | |
1507 | p[1], p[2], p[3]); | |
1508 | pc->para.cause = 100; | |
1509 | l3ni1_msg_without_setup(pc, pr, NULL); | |
1510 | return; | |
1511 | } | |
1512 | } else { | |
1513 | if (pc->debug & L3_DEB_WARN) | |
1514 | l3_debug(pc->st, "setup without bearer capabilities"); | |
1515 | /* ETS 300-104 1.3.3 */ | |
1516 | pc->para.cause = 96; | |
1517 | l3ni1_msg_without_setup(pc, pr, NULL); | |
1518 | return; | |
1519 | } | |
1520 | /* | |
1521 | * Channel Identification | |
1522 | */ | |
1523 | if ((id = l3ni1_get_channel_id(pc, skb)) >= 0) { | |
1524 | if ((pc->para.bchannel = id)) { | |
1525 | if ((3 == id) && (0x10 == pc->para.moderate)) { | |
1526 | if (pc->debug & L3_DEB_WARN) | |
1527 | l3_debug(pc->st, "setup with wrong chid %x", | |
1528 | id); | |
1529 | pc->para.cause = 100; | |
1530 | l3ni1_msg_without_setup(pc, pr, NULL); | |
1531 | return; | |
1532 | } | |
1533 | bcfound++; | |
1534 | } else | |
1535 | { if (pc->debug & L3_DEB_WARN) | |
1536 | l3_debug(pc->st, "setup without bchannel, call waiting"); | |
1537 | bcfound++; | |
1538 | } | |
1539 | } else { | |
1540 | if (pc->debug & L3_DEB_WARN) | |
1541 | l3_debug(pc->st, "setup with wrong chid ret %d", id); | |
1542 | if (id == -1) | |
1543 | pc->para.cause = 96; | |
1544 | else | |
1545 | pc->para.cause = 100; | |
1546 | l3ni1_msg_without_setup(pc, pr, NULL); | |
1547 | return; | |
1548 | } | |
1549 | /* Now we are on none mandatory IEs */ | |
1550 | err = check_infoelements(pc, skb, ie_SETUP); | |
1551 | if (ERR_IE_COMPREHENSION == err) { | |
1552 | pc->para.cause = 96; | |
1553 | l3ni1_msg_without_setup(pc, pr, NULL); | |
1554 | return; | |
1555 | } | |
1556 | p = skb->data; | |
1557 | if ((p = findie(p, skb->len, 0x70, 0))) | |
1558 | iecpy(pc->para.setup.eazmsn, p, 1); | |
1559 | else | |
1560 | pc->para.setup.eazmsn[0] = 0; | |
1561 | ||
1562 | p = skb->data; | |
1563 | if ((p = findie(p, skb->len, 0x71, 0))) { | |
1564 | /* Called party subaddress */ | |
1565 | if ((p[1] >= 2) && (p[2] == 0x80) && (p[3] == 0x50)) { | |
1566 | tmp[0] = '.'; | |
1567 | iecpy(&tmp[1], p, 2); | |
1568 | strcat(pc->para.setup.eazmsn, tmp); | |
1569 | } else if (pc->debug & L3_DEB_WARN) | |
1570 | l3_debug(pc->st, "wrong called subaddress"); | |
1571 | } | |
1572 | p = skb->data; | |
1573 | if ((p = findie(p, skb->len, 0x6c, 0))) { | |
1574 | pc->para.setup.plan = p[2]; | |
1575 | if (p[2] & 0x80) { | |
1576 | iecpy(pc->para.setup.phone, p, 1); | |
1577 | pc->para.setup.screen = 0; | |
1578 | } else { | |
1579 | iecpy(pc->para.setup.phone, p, 2); | |
1580 | pc->para.setup.screen = p[3]; | |
1581 | } | |
1582 | } else { | |
1583 | pc->para.setup.phone[0] = 0; | |
1584 | pc->para.setup.plan = 0; | |
1585 | pc->para.setup.screen = 0; | |
1586 | } | |
1587 | p = skb->data; | |
1588 | if ((p = findie(p, skb->len, 0x6d, 0))) { | |
1589 | /* Calling party subaddress */ | |
1590 | if ((p[1] >= 2) && (p[2] == 0x80) && (p[3] == 0x50)) { | |
1591 | tmp[0] = '.'; | |
1592 | iecpy(&tmp[1], p, 2); | |
1593 | strcat(pc->para.setup.phone, tmp); | |
1594 | } else if (pc->debug & L3_DEB_WARN) | |
1595 | l3_debug(pc->st, "wrong calling subaddress"); | |
1596 | } | |
1597 | newl3state(pc, 6); | |
1598 | if (err) /* STATUS for none mandatory IE errors after actions are taken */ | |
1599 | l3ni1_std_ie_err(pc, err); | |
1600 | pc->st->l3.l3l4(pc->st, CC_SETUP | INDICATION, pc); | |
1601 | } | |
1602 | ||
1603 | static void | |
1604 | l3ni1_reset(struct l3_process *pc, u_char pr, void *arg) | |
1605 | { | |
1606 | ni1_release_l3_process(pc); | |
1607 | } | |
1608 | ||
1609 | static void | |
1610 | l3ni1_disconnect_req(struct l3_process *pc, u_char pr, void *arg) | |
1611 | { | |
1612 | struct sk_buff *skb; | |
1613 | u_char tmp[16+40]; | |
1614 | u_char *p = tmp; | |
1615 | int l; | |
1616 | u_char cause = 16; | |
1617 | ||
1618 | if (pc->para.cause != NO_CAUSE) | |
1619 | cause = pc->para.cause; | |
1620 | ||
1621 | StopAllL3Timer(pc); | |
1622 | ||
1623 | MsgHead(p, pc->callref, MT_DISCONNECT); | |
1624 | ||
1625 | *p++ = IE_CAUSE; | |
1626 | *p++ = 0x2; | |
1627 | *p++ = 0x80; | |
1628 | *p++ = cause | 0x80; | |
1629 | ||
1630 | if (pc->prot.ni1.uus1_data[0]) | |
1631 | { *p++ = IE_USER_USER; /* UUS info element */ | |
1632 | *p++ = strlen(pc->prot.ni1.uus1_data) + 1; | |
1633 | *p++ = 0x04; /* IA5 chars */ | |
1634 | strcpy(p,pc->prot.ni1.uus1_data); | |
1635 | p += strlen(pc->prot.ni1.uus1_data); | |
1636 | pc->prot.ni1.uus1_data[0] = '\0'; | |
1637 | } | |
1638 | ||
1639 | l = p - tmp; | |
1640 | if (!(skb = l3_alloc_skb(l))) | |
1641 | return; | |
1642 | memcpy(skb_put(skb, l), tmp, l); | |
1643 | newl3state(pc, 11); | |
1644 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
1645 | L3AddTimer(&pc->timer, T305, CC_T305); | |
1646 | } | |
1647 | ||
1648 | static void | |
1649 | l3ni1_setup_rsp(struct l3_process *pc, u_char pr, | |
1650 | void *arg) | |
1651 | { | |
1652 | if (!pc->para.bchannel) | |
1653 | { if (pc->debug & L3_DEB_WARN) | |
1654 | l3_debug(pc->st, "D-chan connect for waiting call"); | |
1655 | l3ni1_disconnect_req(pc, pr, arg); | |
1656 | return; | |
1657 | } | |
1658 | newl3state(pc, 8); | |
1659 | if (pc->debug & L3_DEB_WARN) | |
1660 | l3_debug(pc->st, "D-chan connect for waiting call"); | |
1661 | l3ni1_message_plus_chid(pc, MT_CONNECT); /* GE 05/09/00 */ | |
1662 | L3DelTimer(&pc->timer); | |
1663 | L3AddTimer(&pc->timer, T313, CC_T313); | |
1664 | } | |
1665 | ||
1666 | static void | |
1667 | l3ni1_connect_ack(struct l3_process *pc, u_char pr, void *arg) | |
1668 | { | |
1669 | struct sk_buff *skb = arg; | |
1670 | int ret; | |
1671 | ||
1672 | ret = check_infoelements(pc, skb, ie_CONNECT_ACKNOWLEDGE); | |
1673 | if (ERR_IE_COMPREHENSION == ret) { | |
1674 | l3ni1_std_ie_err(pc, ret); | |
1675 | return; | |
1676 | } | |
1677 | newl3state(pc, 10); | |
1678 | L3DelTimer(&pc->timer); | |
1679 | if (ret) | |
1680 | l3ni1_std_ie_err(pc, ret); | |
1681 | pc->st->l3.l3l4(pc->st, CC_SETUP_COMPL | INDICATION, pc); | |
1682 | } | |
1683 | ||
1684 | static void | |
1685 | l3ni1_reject_req(struct l3_process *pc, u_char pr, void *arg) | |
1686 | { | |
1687 | struct sk_buff *skb; | |
1688 | u_char tmp[16]; | |
1689 | u_char *p = tmp; | |
1690 | int l; | |
1691 | u_char cause = 21; | |
1692 | ||
1693 | if (pc->para.cause != NO_CAUSE) | |
1694 | cause = pc->para.cause; | |
1695 | ||
1696 | MsgHead(p, pc->callref, MT_RELEASE_COMPLETE); | |
1697 | ||
1698 | *p++ = IE_CAUSE; | |
1699 | *p++ = 0x2; | |
1700 | *p++ = 0x80; | |
1701 | *p++ = cause | 0x80; | |
1702 | ||
1703 | l = p - tmp; | |
1704 | if (!(skb = l3_alloc_skb(l))) | |
1705 | return; | |
1706 | memcpy(skb_put(skb, l), tmp, l); | |
1707 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
1708 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
1709 | newl3state(pc, 0); | |
1710 | ni1_release_l3_process(pc); | |
1711 | } | |
1712 | ||
1713 | static void | |
1714 | l3ni1_release(struct l3_process *pc, u_char pr, void *arg) | |
1715 | { | |
1716 | struct sk_buff *skb = arg; | |
1717 | u_char *p; | |
1718 | int ret, cause=0; | |
1719 | ||
1720 | StopAllL3Timer(pc); | |
1721 | if ((ret = l3ni1_get_cause(pc, skb))>0) { | |
1722 | if (pc->debug & L3_DEB_WARN) | |
1723 | l3_debug(pc->st, "REL get_cause ret(%d)", ret); | |
1724 | } else if (ret<0) | |
1725 | pc->para.cause = NO_CAUSE; | |
1726 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) { | |
1727 | l3ni1_parse_facility(pc->st, pc, pc->callref, p); | |
1728 | } | |
1729 | if ((ret<0) && (pc->state != 11)) | |
1730 | cause = 96; | |
1731 | else if (ret>0) | |
1732 | cause = 100; | |
1733 | ret = check_infoelements(pc, skb, ie_RELEASE); | |
1734 | if (ERR_IE_COMPREHENSION == ret) | |
1735 | cause = 96; | |
1736 | else if ((ERR_IE_UNRECOGNIZED == ret) && (!cause)) | |
1737 | cause = 99; | |
1738 | if (cause) | |
1739 | l3ni1_message_cause(pc, MT_RELEASE_COMPLETE, cause); | |
1740 | else | |
1741 | l3ni1_message(pc, MT_RELEASE_COMPLETE); | |
1742 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
1743 | newl3state(pc, 0); | |
1744 | ni1_release_l3_process(pc); | |
1745 | } | |
1746 | ||
1747 | static void | |
1748 | l3ni1_alert_req(struct l3_process *pc, u_char pr, | |
1749 | void *arg) | |
1750 | { | |
1751 | newl3state(pc, 7); | |
1752 | if (!pc->prot.ni1.uus1_data[0]) | |
1753 | l3ni1_message(pc, MT_ALERTING); | |
1754 | else | |
1755 | l3ni1_msg_with_uus(pc, MT_ALERTING); | |
1756 | } | |
1757 | ||
1758 | static void | |
1759 | l3ni1_proceed_req(struct l3_process *pc, u_char pr, | |
1760 | void *arg) | |
1761 | { | |
1762 | newl3state(pc, 9); | |
1763 | l3ni1_message(pc, MT_CALL_PROCEEDING); | |
1764 | pc->st->l3.l3l4(pc->st, CC_PROCEED_SEND | INDICATION, pc); | |
1765 | } | |
1766 | ||
1767 | static void | |
1768 | l3ni1_setup_ack_req(struct l3_process *pc, u_char pr, | |
1769 | void *arg) | |
1770 | { | |
1771 | newl3state(pc, 25); | |
1772 | L3DelTimer(&pc->timer); | |
1773 | L3AddTimer(&pc->timer, T302, CC_T302); | |
1774 | l3ni1_message(pc, MT_SETUP_ACKNOWLEDGE); | |
1775 | } | |
1776 | ||
1777 | /********************************************/ | |
1778 | /* deliver a incoming display message to HL */ | |
1779 | /********************************************/ | |
1780 | static void | |
1781 | l3ni1_deliver_display(struct l3_process *pc, int pr, u_char *infp) | |
1782 | { u_char len; | |
1783 | isdn_ctrl ic; | |
1784 | struct IsdnCardState *cs; | |
1785 | char *p; | |
1786 | ||
1787 | if (*infp++ != IE_DISPLAY) return; | |
1788 | if ((len = *infp++) > 80) return; /* total length <= 82 */ | |
1789 | if (!pc->chan) return; | |
1790 | ||
1791 | p = ic.parm.display; | |
1792 | while (len--) | |
1793 | *p++ = *infp++; | |
1794 | *p = '\0'; | |
1795 | ic.command = ISDN_STAT_DISPLAY; | |
1796 | cs = pc->st->l1.hardware; | |
1797 | ic.driver = cs->myid; | |
1798 | ic.arg = pc->chan->chan; | |
1799 | cs->iif.statcallb(&ic); | |
1800 | } /* l3ni1_deliver_display */ | |
1801 | ||
1802 | ||
1803 | static void | |
1804 | l3ni1_progress(struct l3_process *pc, u_char pr, void *arg) | |
1805 | { | |
1806 | struct sk_buff *skb = arg; | |
1807 | int err = 0; | |
1808 | u_char *p; | |
1809 | ||
1810 | if ((p = findie(skb->data, skb->len, IE_PROGRESS, 0))) { | |
1811 | if (p[1] != 2) { | |
1812 | err = 1; | |
1813 | pc->para.cause = 100; | |
1814 | } else if (!(p[2] & 0x70)) { | |
1815 | switch (p[2]) { | |
1816 | case 0x80: | |
1817 | case 0x81: | |
1818 | case 0x82: | |
1819 | case 0x84: | |
1820 | case 0x85: | |
1821 | case 0x87: | |
1822 | case 0x8a: | |
1823 | switch (p[3]) { | |
1824 | case 0x81: | |
1825 | case 0x82: | |
1826 | case 0x83: | |
1827 | case 0x84: | |
1828 | case 0x88: | |
1829 | break; | |
1830 | default: | |
1831 | err = 2; | |
1832 | pc->para.cause = 100; | |
1833 | break; | |
1834 | } | |
1835 | break; | |
1836 | default: | |
1837 | err = 3; | |
1838 | pc->para.cause = 100; | |
1839 | break; | |
1840 | } | |
1841 | } | |
1842 | } else { | |
1843 | pc->para.cause = 96; | |
1844 | err = 4; | |
1845 | } | |
1846 | if (err) { | |
1847 | if (pc->debug & L3_DEB_WARN) | |
1848 | l3_debug(pc->st, "progress error %d", err); | |
1849 | l3ni1_status_send(pc, pr, NULL); | |
1850 | return; | |
1851 | } | |
1852 | /* Now we are on none mandatory IEs */ | |
1853 | err = check_infoelements(pc, skb, ie_PROGRESS); | |
1854 | if (err) | |
1855 | l3ni1_std_ie_err(pc, err); | |
1856 | if (ERR_IE_COMPREHENSION != err) | |
1857 | pc->st->l3.l3l4(pc->st, CC_PROGRESS | INDICATION, pc); | |
1858 | } | |
1859 | ||
1860 | static void | |
1861 | l3ni1_notify(struct l3_process *pc, u_char pr, void *arg) | |
1862 | { | |
1863 | struct sk_buff *skb = arg; | |
1864 | int err = 0; | |
1865 | u_char *p; | |
1866 | ||
1867 | if ((p = findie(skb->data, skb->len, IE_NOTIFY, 0))) { | |
1868 | if (p[1] != 1) { | |
1869 | err = 1; | |
1870 | pc->para.cause = 100; | |
1871 | } else { | |
1872 | switch (p[2]) { | |
1873 | case 0x80: | |
1874 | case 0x81: | |
1875 | case 0x82: | |
1876 | break; | |
1877 | default: | |
1878 | pc->para.cause = 100; | |
1879 | err = 2; | |
1880 | break; | |
1881 | } | |
1882 | } | |
1883 | } else { | |
1884 | pc->para.cause = 96; | |
1885 | err = 3; | |
1886 | } | |
1887 | if (err) { | |
1888 | if (pc->debug & L3_DEB_WARN) | |
1889 | l3_debug(pc->st, "notify error %d", err); | |
1890 | l3ni1_status_send(pc, pr, NULL); | |
1891 | return; | |
1892 | } | |
1893 | /* Now we are on none mandatory IEs */ | |
1894 | err = check_infoelements(pc, skb, ie_NOTIFY); | |
1895 | if (err) | |
1896 | l3ni1_std_ie_err(pc, err); | |
1897 | if (ERR_IE_COMPREHENSION != err) | |
1898 | pc->st->l3.l3l4(pc->st, CC_NOTIFY | INDICATION, pc); | |
1899 | } | |
1900 | ||
1901 | static void | |
1902 | l3ni1_status_enq(struct l3_process *pc, u_char pr, void *arg) | |
1903 | { | |
1904 | int ret; | |
1905 | struct sk_buff *skb = arg; | |
1906 | ||
1907 | ret = check_infoelements(pc, skb, ie_STATUS_ENQUIRY); | |
1908 | l3ni1_std_ie_err(pc, ret); | |
1909 | pc->para.cause = 30; /* response to STATUS_ENQUIRY */ | |
1910 | l3ni1_status_send(pc, pr, NULL); | |
1911 | } | |
1912 | ||
1913 | static void | |
1914 | l3ni1_information(struct l3_process *pc, u_char pr, void *arg) | |
1915 | { | |
1916 | int ret; | |
1917 | struct sk_buff *skb = arg; | |
1918 | u_char *p; | |
1919 | char tmp[32]; | |
1920 | ||
1921 | ret = check_infoelements(pc, skb, ie_INFORMATION); | |
1922 | if (ret) | |
1923 | l3ni1_std_ie_err(pc, ret); | |
1924 | if (pc->state == 25) { /* overlap receiving */ | |
1925 | L3DelTimer(&pc->timer); | |
1926 | p = skb->data; | |
1927 | if ((p = findie(p, skb->len, 0x70, 0))) { | |
1928 | iecpy(tmp, p, 1); | |
1929 | strcat(pc->para.setup.eazmsn, tmp); | |
1930 | pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc); | |
1931 | } | |
1932 | L3AddTimer(&pc->timer, T302, CC_T302); | |
1933 | } | |
1934 | } | |
1935 | ||
1936 | /******************************/ | |
1937 | /* handle deflection requests */ | |
1938 | /******************************/ | |
1939 | static void l3ni1_redir_req(struct l3_process *pc, u_char pr, void *arg) | |
1940 | { | |
1941 | struct sk_buff *skb; | |
1942 | u_char tmp[128]; | |
1943 | u_char *p = tmp; | |
1944 | u_char *subp; | |
1945 | u_char len_phone = 0; | |
1946 | u_char len_sub = 0; | |
1947 | int l; | |
1948 | ||
1949 | ||
1950 | strcpy(pc->prot.ni1.uus1_data,pc->chan->setup.eazmsn); /* copy uus element if available */ | |
1951 | if (!pc->chan->setup.phone[0]) | |
1952 | { pc->para.cause = -1; | |
1953 | l3ni1_disconnect_req(pc,pr,arg); /* disconnect immediately */ | |
1954 | return; | |
1955 | } /* only uus */ | |
1956 | ||
1957 | if (pc->prot.ni1.invoke_id) | |
1958 | free_invoke_id(pc->st,pc->prot.ni1.invoke_id); | |
1959 | ||
1960 | if (!(pc->prot.ni1.invoke_id = new_invoke_id(pc->st))) | |
1961 | return; | |
1962 | ||
1963 | MsgHead(p, pc->callref, MT_FACILITY); | |
1964 | ||
1965 | for (subp = pc->chan->setup.phone; (*subp) && (*subp != '.'); subp++) len_phone++; /* len of phone number */ | |
1966 | if (*subp++ == '.') len_sub = strlen(subp) + 2; /* length including info subaddress element */ | |
1967 | ||
1968 | *p++ = 0x1c; /* Facility info element */ | |
1969 | *p++ = len_phone + len_sub + 2 + 2 + 8 + 3 + 3; /* length of element */ | |
1970 | *p++ = 0x91; /* remote operations protocol */ | |
1971 | *p++ = 0xa1; /* invoke component */ | |
1972 | ||
1973 | *p++ = len_phone + len_sub + 2 + 2 + 8 + 3; /* length of data */ | |
1974 | *p++ = 0x02; /* invoke id tag, integer */ | |
1975 | *p++ = 0x01; /* length */ | |
1976 | *p++ = pc->prot.ni1.invoke_id; /* invoke id */ | |
1977 | *p++ = 0x02; /* operation value tag, integer */ | |
1978 | *p++ = 0x01; /* length */ | |
1979 | *p++ = 0x0D; /* Call Deflect */ | |
1980 | ||
1981 | *p++ = 0x30; /* sequence phone number */ | |
1982 | *p++ = len_phone + 2 + 2 + 3 + len_sub; /* length */ | |
1983 | ||
1984 | *p++ = 0x30; /* Deflected to UserNumber */ | |
1985 | *p++ = len_phone+2+len_sub; /* length */ | |
1986 | *p++ = 0x80; /* NumberDigits */ | |
1987 | *p++ = len_phone; /* length */ | |
1988 | for (l = 0; l < len_phone; l++) | |
1989 | *p++ = pc->chan->setup.phone[l]; | |
1990 | ||
1991 | if (len_sub) | |
1992 | { *p++ = 0x04; /* called party subaddress */ | |
1993 | *p++ = len_sub - 2; | |
1994 | while (*subp) *p++ = *subp++; | |
1995 | } | |
1996 | ||
1997 | *p++ = 0x01; /* screening identifier */ | |
1998 | *p++ = 0x01; | |
1999 | *p++ = pc->chan->setup.screen; | |
2000 | ||
2001 | l = p - tmp; | |
2002 | if (!(skb = l3_alloc_skb(l))) return; | |
2003 | memcpy(skb_put(skb, l), tmp, l); | |
2004 | ||
2005 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2006 | } /* l3ni1_redir_req */ | |
2007 | ||
2008 | /********************************************/ | |
2009 | /* handle deflection request in early state */ | |
2010 | /********************************************/ | |
2011 | static void l3ni1_redir_req_early(struct l3_process *pc, u_char pr, void *arg) | |
2012 | { | |
2013 | l3ni1_proceed_req(pc,pr,arg); | |
2014 | l3ni1_redir_req(pc,pr,arg); | |
2015 | } /* l3ni1_redir_req_early */ | |
2016 | ||
2017 | /***********************************************/ | |
2018 | /* handle special commands for this protocol. */ | |
2019 | /* Examples are call independant services like */ | |
2020 | /* remote operations with dummy callref. */ | |
2021 | /***********************************************/ | |
2022 | static int l3ni1_cmd_global(struct PStack *st, isdn_ctrl *ic) | |
2023 | { u_char id; | |
2024 | u_char temp[265]; | |
2025 | u_char *p = temp; | |
2026 | int i, l, proc_len; | |
2027 | struct sk_buff *skb; | |
2028 | struct l3_process *pc = NULL; | |
2029 | ||
2030 | switch (ic->arg) | |
2031 | { case NI1_CMD_INVOKE: | |
2032 | if (ic->parm.ni1_io.datalen < 0) return(-2); /* invalid parameter */ | |
2033 | ||
2034 | for (proc_len = 1, i = ic->parm.ni1_io.proc >> 8; i; i++) | |
2035 | i = i >> 8; /* add one byte */ | |
2036 | l = ic->parm.ni1_io.datalen + proc_len + 8; /* length excluding ie header */ | |
2037 | if (l > 255) | |
2038 | return(-2); /* too long */ | |
2039 | ||
2040 | if (!(id = new_invoke_id(st))) | |
2041 | return(0); /* first get a invoke id -> return if no available */ | |
2042 | ||
2043 | i = -1; | |
2044 | MsgHead(p, i, MT_FACILITY); /* build message head */ | |
2045 | *p++ = 0x1C; /* Facility IE */ | |
2046 | *p++ = l; /* length of ie */ | |
2047 | *p++ = 0x91; /* remote operations */ | |
2048 | *p++ = 0xA1; /* invoke */ | |
2049 | *p++ = l - 3; /* length of invoke */ | |
2050 | *p++ = 0x02; /* invoke id tag */ | |
2051 | *p++ = 0x01; /* length is 1 */ | |
2052 | *p++ = id; /* invoke id */ | |
2053 | *p++ = 0x02; /* operation */ | |
2054 | *p++ = proc_len; /* length of operation */ | |
2055 | ||
2056 | for (i = proc_len; i; i--) | |
2057 | *p++ = (ic->parm.ni1_io.proc >> (i-1)) & 0xFF; | |
2058 | memcpy(p, ic->parm.ni1_io.data, ic->parm.ni1_io.datalen); /* copy data */ | |
2059 | l = (p - temp) + ic->parm.ni1_io.datalen; /* total length */ | |
2060 | ||
2061 | if (ic->parm.ni1_io.timeout > 0) | |
2062 | if (!(pc = ni1_new_l3_process(st, -1))) | |
2063 | { free_invoke_id(st, id); | |
2064 | return(-2); | |
2065 | } | |
2066 | pc->prot.ni1.ll_id = ic->parm.ni1_io.ll_id; /* remember id */ | |
2067 | pc->prot.ni1.proc = ic->parm.ni1_io.proc; /* and procedure */ | |
2068 | ||
2069 | if (!(skb = l3_alloc_skb(l))) | |
2070 | { free_invoke_id(st, id); | |
2071 | if (pc) ni1_release_l3_process(pc); | |
2072 | return(-2); | |
2073 | } | |
2074 | memcpy(skb_put(skb, l), temp, l); | |
2075 | ||
2076 | if (pc) | |
2077 | { pc->prot.ni1.invoke_id = id; /* remember id */ | |
2078 | L3AddTimer(&pc->timer, ic->parm.ni1_io.timeout, CC_TNI1_IO | REQUEST); | |
2079 | } | |
2080 | ||
2081 | l3_msg(st, DL_DATA | REQUEST, skb); | |
2082 | ic->parm.ni1_io.hl_id = id; /* return id */ | |
2083 | return(0); | |
2084 | ||
2085 | case NI1_CMD_INVOKE_ABORT: | |
2086 | if ((pc = l3ni1_search_dummy_proc(st, ic->parm.ni1_io.hl_id))) | |
2087 | { L3DelTimer(&pc->timer); /* remove timer */ | |
2088 | ni1_release_l3_process(pc); | |
2089 | return(0); | |
2090 | } | |
2091 | else | |
2092 | { l3_debug(st, "l3ni1_cmd_global abort unknown id"); | |
2093 | return(-2); | |
2094 | } | |
2095 | break; | |
2096 | ||
2097 | default: | |
2098 | l3_debug(st, "l3ni1_cmd_global unknown cmd 0x%lx", ic->arg); | |
2099 | return(-1); | |
2100 | } /* switch ic-> arg */ | |
2101 | return(-1); | |
2102 | } /* l3ni1_cmd_global */ | |
2103 | ||
2104 | static void | |
2105 | l3ni1_io_timer(struct l3_process *pc) | |
2106 | { isdn_ctrl ic; | |
2107 | struct IsdnCardState *cs = pc->st->l1.hardware; | |
2108 | ||
2109 | L3DelTimer(&pc->timer); /* remove timer */ | |
2110 | ||
2111 | ic.driver = cs->myid; | |
2112 | ic.command = ISDN_STAT_PROT; | |
2113 | ic.arg = NI1_STAT_INVOKE_ERR; | |
2114 | ic.parm.ni1_io.hl_id = pc->prot.ni1.invoke_id; | |
2115 | ic.parm.ni1_io.ll_id = pc->prot.ni1.ll_id; | |
2116 | ic.parm.ni1_io.proc = pc->prot.ni1.proc; | |
2117 | ic.parm.ni1_io.timeout= -1; | |
2118 | ic.parm.ni1_io.datalen = 0; | |
2119 | ic.parm.ni1_io.data = NULL; | |
2120 | free_invoke_id(pc->st, pc->prot.ni1.invoke_id); | |
2121 | pc->prot.ni1.invoke_id = 0; /* reset id */ | |
2122 | ||
2123 | cs->iif.statcallb(&ic); | |
2124 | ||
2125 | ni1_release_l3_process(pc); | |
2126 | } /* l3ni1_io_timer */ | |
2127 | ||
2128 | static void | |
2129 | l3ni1_release_ind(struct l3_process *pc, u_char pr, void *arg) | |
2130 | { | |
2131 | u_char *p; | |
2132 | struct sk_buff *skb = arg; | |
2133 | int callState = 0; | |
2134 | p = skb->data; | |
2135 | ||
2136 | if ((p = findie(p, skb->len, IE_CALL_STATE, 0))) { | |
2137 | p++; | |
2138 | if (1 == *p++) | |
2139 | callState = *p; | |
2140 | } | |
2141 | if (callState == 0) { | |
2142 | /* ETS 300-104 7.6.1, 8.6.1, 10.6.1... and 16.1 | |
2143 | * set down layer 3 without sending any message | |
2144 | */ | |
2145 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
2146 | newl3state(pc, 0); | |
2147 | ni1_release_l3_process(pc); | |
2148 | } else { | |
2149 | pc->st->l3.l3l4(pc->st, CC_IGNORE | INDICATION, pc); | |
2150 | } | |
2151 | } | |
2152 | ||
2153 | static void | |
2154 | l3ni1_dummy(struct l3_process *pc, u_char pr, void *arg) | |
2155 | { | |
2156 | } | |
2157 | ||
2158 | static void | |
2159 | l3ni1_t302(struct l3_process *pc, u_char pr, void *arg) | |
2160 | { | |
2161 | L3DelTimer(&pc->timer); | |
2162 | pc->para.loc = 0; | |
2163 | pc->para.cause = 28; /* invalid number */ | |
2164 | l3ni1_disconnect_req(pc, pr, NULL); | |
2165 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); | |
2166 | } | |
2167 | ||
2168 | static void | |
2169 | l3ni1_t303(struct l3_process *pc, u_char pr, void *arg) | |
2170 | { | |
2171 | if (pc->N303 > 0) { | |
2172 | pc->N303--; | |
2173 | L3DelTimer(&pc->timer); | |
2174 | l3ni1_setup_req(pc, pr, arg); | |
2175 | } else { | |
2176 | L3DelTimer(&pc->timer); | |
2177 | l3ni1_message_cause(pc, MT_RELEASE_COMPLETE, 102); | |
2178 | pc->st->l3.l3l4(pc->st, CC_NOSETUP_RSP, pc); | |
2179 | ni1_release_l3_process(pc); | |
2180 | } | |
2181 | } | |
2182 | ||
2183 | static void | |
2184 | l3ni1_t304(struct l3_process *pc, u_char pr, void *arg) | |
2185 | { | |
2186 | L3DelTimer(&pc->timer); | |
2187 | pc->para.loc = 0; | |
2188 | pc->para.cause = 102; | |
2189 | l3ni1_disconnect_req(pc, pr, NULL); | |
2190 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); | |
2191 | ||
2192 | } | |
2193 | ||
2194 | static void | |
2195 | l3ni1_t305(struct l3_process *pc, u_char pr, void *arg) | |
2196 | { | |
2197 | u_char tmp[16]; | |
2198 | u_char *p = tmp; | |
2199 | int l; | |
2200 | struct sk_buff *skb; | |
2201 | u_char cause = 16; | |
2202 | ||
2203 | L3DelTimer(&pc->timer); | |
2204 | if (pc->para.cause != NO_CAUSE) | |
2205 | cause = pc->para.cause; | |
2206 | ||
2207 | MsgHead(p, pc->callref, MT_RELEASE); | |
2208 | ||
2209 | *p++ = IE_CAUSE; | |
2210 | *p++ = 0x2; | |
2211 | *p++ = 0x80; | |
2212 | *p++ = cause | 0x80; | |
2213 | ||
2214 | l = p - tmp; | |
2215 | if (!(skb = l3_alloc_skb(l))) | |
2216 | return; | |
2217 | memcpy(skb_put(skb, l), tmp, l); | |
2218 | newl3state(pc, 19); | |
2219 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2220 | L3AddTimer(&pc->timer, T308, CC_T308_1); | |
2221 | } | |
2222 | ||
2223 | static void | |
2224 | l3ni1_t310(struct l3_process *pc, u_char pr, void *arg) | |
2225 | { | |
2226 | L3DelTimer(&pc->timer); | |
2227 | pc->para.loc = 0; | |
2228 | pc->para.cause = 102; | |
2229 | l3ni1_disconnect_req(pc, pr, NULL); | |
2230 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); | |
2231 | } | |
2232 | ||
2233 | static void | |
2234 | l3ni1_t313(struct l3_process *pc, u_char pr, void *arg) | |
2235 | { | |
2236 | L3DelTimer(&pc->timer); | |
2237 | pc->para.loc = 0; | |
2238 | pc->para.cause = 102; | |
2239 | l3ni1_disconnect_req(pc, pr, NULL); | |
2240 | pc->st->l3.l3l4(pc->st, CC_CONNECT_ERR, pc); | |
2241 | } | |
2242 | ||
2243 | static void | |
2244 | l3ni1_t308_1(struct l3_process *pc, u_char pr, void *arg) | |
2245 | { | |
2246 | newl3state(pc, 19); | |
2247 | L3DelTimer(&pc->timer); | |
2248 | l3ni1_message(pc, MT_RELEASE); | |
2249 | L3AddTimer(&pc->timer, T308, CC_T308_2); | |
2250 | } | |
2251 | ||
2252 | static void | |
2253 | l3ni1_t308_2(struct l3_process *pc, u_char pr, void *arg) | |
2254 | { | |
2255 | L3DelTimer(&pc->timer); | |
2256 | pc->st->l3.l3l4(pc->st, CC_RELEASE_ERR, pc); | |
2257 | ni1_release_l3_process(pc); | |
2258 | } | |
2259 | ||
2260 | static void | |
2261 | l3ni1_t318(struct l3_process *pc, u_char pr, void *arg) | |
2262 | { | |
2263 | L3DelTimer(&pc->timer); | |
2264 | pc->para.cause = 102; /* Timer expiry */ | |
2265 | pc->para.loc = 0; /* local */ | |
2266 | pc->st->l3.l3l4(pc->st, CC_RESUME_ERR, pc); | |
2267 | newl3state(pc, 19); | |
2268 | l3ni1_message(pc, MT_RELEASE); | |
2269 | L3AddTimer(&pc->timer, T308, CC_T308_1); | |
2270 | } | |
2271 | ||
2272 | static void | |
2273 | l3ni1_t319(struct l3_process *pc, u_char pr, void *arg) | |
2274 | { | |
2275 | L3DelTimer(&pc->timer); | |
2276 | pc->para.cause = 102; /* Timer expiry */ | |
2277 | pc->para.loc = 0; /* local */ | |
2278 | pc->st->l3.l3l4(pc->st, CC_SUSPEND_ERR, pc); | |
2279 | newl3state(pc, 10); | |
2280 | } | |
2281 | ||
2282 | static void | |
2283 | l3ni1_restart(struct l3_process *pc, u_char pr, void *arg) | |
2284 | { | |
2285 | L3DelTimer(&pc->timer); | |
2286 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
2287 | ni1_release_l3_process(pc); | |
2288 | } | |
2289 | ||
2290 | static void | |
2291 | l3ni1_status(struct l3_process *pc, u_char pr, void *arg) | |
2292 | { | |
2293 | u_char *p; | |
2294 | struct sk_buff *skb = arg; | |
2295 | int ret; | |
2296 | u_char cause = 0, callState = 0; | |
2297 | ||
2298 | if ((ret = l3ni1_get_cause(pc, skb))) { | |
2299 | if (pc->debug & L3_DEB_WARN) | |
2300 | l3_debug(pc->st, "STATUS get_cause ret(%d)",ret); | |
2301 | if (ret < 0) | |
2302 | cause = 96; | |
2303 | else if (ret > 0) | |
2304 | cause = 100; | |
2305 | } | |
2306 | if ((p = findie(skb->data, skb->len, IE_CALL_STATE, 0))) { | |
2307 | p++; | |
2308 | if (1 == *p++) { | |
2309 | callState = *p; | |
2310 | if (!ie_in_set(pc, *p, l3_valid_states)) | |
2311 | cause = 100; | |
2312 | } else | |
2313 | cause = 100; | |
2314 | } else | |
2315 | cause = 96; | |
2316 | if (!cause) { /* no error before */ | |
2317 | ret = check_infoelements(pc, skb, ie_STATUS); | |
2318 | if (ERR_IE_COMPREHENSION == ret) | |
2319 | cause = 96; | |
2320 | else if (ERR_IE_UNRECOGNIZED == ret) | |
2321 | cause = 99; | |
2322 | } | |
2323 | if (cause) { | |
2324 | u_char tmp; | |
2325 | ||
2326 | if (pc->debug & L3_DEB_WARN) | |
2327 | l3_debug(pc->st, "STATUS error(%d/%d)",ret,cause); | |
2328 | tmp = pc->para.cause; | |
2329 | pc->para.cause = cause; | |
2330 | l3ni1_status_send(pc, 0, NULL); | |
2331 | if (cause == 99) | |
2332 | pc->para.cause = tmp; | |
2333 | else | |
2334 | return; | |
2335 | } | |
2336 | cause = pc->para.cause; | |
2337 | if (((cause & 0x7f) == 111) && (callState == 0)) { | |
2338 | /* ETS 300-104 7.6.1, 8.6.1, 10.6.1... | |
2339 | * if received MT_STATUS with cause == 111 and call | |
2340 | * state == 0, then we must set down layer 3 | |
2341 | */ | |
2342 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
2343 | newl3state(pc, 0); | |
2344 | ni1_release_l3_process(pc); | |
2345 | } | |
2346 | } | |
2347 | ||
2348 | static void | |
2349 | l3ni1_facility(struct l3_process *pc, u_char pr, void *arg) | |
2350 | { | |
2351 | struct sk_buff *skb = arg; | |
2352 | int ret; | |
2353 | ||
2354 | ret = check_infoelements(pc, skb, ie_FACILITY); | |
2355 | l3ni1_std_ie_err(pc, ret); | |
2356 | { | |
2357 | u_char *p; | |
2358 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) | |
2359 | l3ni1_parse_facility(pc->st, pc, pc->callref, p); | |
2360 | } | |
2361 | } | |
2362 | ||
2363 | static void | |
2364 | l3ni1_suspend_req(struct l3_process *pc, u_char pr, void *arg) | |
2365 | { | |
2366 | struct sk_buff *skb; | |
2367 | u_char tmp[32]; | |
2368 | u_char *p = tmp; | |
2369 | u_char i, l; | |
2370 | u_char *msg = pc->chan->setup.phone; | |
2371 | ||
2372 | MsgHead(p, pc->callref, MT_SUSPEND); | |
2373 | l = *msg++; | |
2374 | if (l && (l <= 10)) { /* Max length 10 octets */ | |
2375 | *p++ = IE_CALL_ID; | |
2376 | *p++ = l; | |
2377 | for (i = 0; i < l; i++) | |
2378 | *p++ = *msg++; | |
2379 | } else if (l) { | |
2380 | l3_debug(pc->st, "SUS wrong CALL_ID len %d", l); | |
2381 | return; | |
2382 | } | |
2383 | l = p - tmp; | |
2384 | if (!(skb = l3_alloc_skb(l))) | |
2385 | return; | |
2386 | memcpy(skb_put(skb, l), tmp, l); | |
2387 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2388 | newl3state(pc, 15); | |
2389 | L3AddTimer(&pc->timer, T319, CC_T319); | |
2390 | } | |
2391 | ||
2392 | static void | |
2393 | l3ni1_suspend_ack(struct l3_process *pc, u_char pr, void *arg) | |
2394 | { | |
2395 | struct sk_buff *skb = arg; | |
2396 | int ret; | |
2397 | ||
2398 | L3DelTimer(&pc->timer); | |
2399 | newl3state(pc, 0); | |
2400 | pc->para.cause = NO_CAUSE; | |
2401 | pc->st->l3.l3l4(pc->st, CC_SUSPEND | CONFIRM, pc); | |
2402 | /* We don't handle suspend_ack for IE errors now */ | |
2403 | if ((ret = check_infoelements(pc, skb, ie_SUSPEND_ACKNOWLEDGE))) | |
2404 | if (pc->debug & L3_DEB_WARN) | |
2405 | l3_debug(pc->st, "SUSPACK check ie(%d)",ret); | |
2406 | ni1_release_l3_process(pc); | |
2407 | } | |
2408 | ||
2409 | static void | |
2410 | l3ni1_suspend_rej(struct l3_process *pc, u_char pr, void *arg) | |
2411 | { | |
2412 | struct sk_buff *skb = arg; | |
2413 | int ret; | |
2414 | ||
2415 | if ((ret = l3ni1_get_cause(pc, skb))) { | |
2416 | if (pc->debug & L3_DEB_WARN) | |
2417 | l3_debug(pc->st, "SUSP_REJ get_cause ret(%d)",ret); | |
2418 | if (ret < 0) | |
2419 | pc->para.cause = 96; | |
2420 | else | |
2421 | pc->para.cause = 100; | |
2422 | l3ni1_status_send(pc, pr, NULL); | |
2423 | return; | |
2424 | } | |
2425 | ret = check_infoelements(pc, skb, ie_SUSPEND_REJECT); | |
2426 | if (ERR_IE_COMPREHENSION == ret) { | |
2427 | l3ni1_std_ie_err(pc, ret); | |
2428 | return; | |
2429 | } | |
2430 | L3DelTimer(&pc->timer); | |
2431 | pc->st->l3.l3l4(pc->st, CC_SUSPEND_ERR, pc); | |
2432 | newl3state(pc, 10); | |
2433 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
2434 | l3ni1_std_ie_err(pc, ret); | |
2435 | } | |
2436 | ||
2437 | static void | |
2438 | l3ni1_resume_req(struct l3_process *pc, u_char pr, void *arg) | |
2439 | { | |
2440 | struct sk_buff *skb; | |
2441 | u_char tmp[32]; | |
2442 | u_char *p = tmp; | |
2443 | u_char i, l; | |
2444 | u_char *msg = pc->para.setup.phone; | |
2445 | ||
2446 | MsgHead(p, pc->callref, MT_RESUME); | |
2447 | ||
2448 | l = *msg++; | |
2449 | if (l && (l <= 10)) { /* Max length 10 octets */ | |
2450 | *p++ = IE_CALL_ID; | |
2451 | *p++ = l; | |
2452 | for (i = 0; i < l; i++) | |
2453 | *p++ = *msg++; | |
2454 | } else if (l) { | |
2455 | l3_debug(pc->st, "RES wrong CALL_ID len %d", l); | |
2456 | return; | |
2457 | } | |
2458 | l = p - tmp; | |
2459 | if (!(skb = l3_alloc_skb(l))) | |
2460 | return; | |
2461 | memcpy(skb_put(skb, l), tmp, l); | |
2462 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2463 | newl3state(pc, 17); | |
2464 | L3AddTimer(&pc->timer, T318, CC_T318); | |
2465 | } | |
2466 | ||
2467 | static void | |
2468 | l3ni1_resume_ack(struct l3_process *pc, u_char pr, void *arg) | |
2469 | { | |
2470 | struct sk_buff *skb = arg; | |
2471 | int id, ret; | |
2472 | ||
2473 | if ((id = l3ni1_get_channel_id(pc, skb)) > 0) { | |
2474 | if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) { | |
2475 | if (pc->debug & L3_DEB_WARN) | |
2476 | l3_debug(pc->st, "resume ack with wrong chid %x", id); | |
2477 | pc->para.cause = 100; | |
2478 | l3ni1_status_send(pc, pr, NULL); | |
2479 | return; | |
2480 | } | |
2481 | pc->para.bchannel = id; | |
2482 | } else if (1 == pc->state) { | |
2483 | if (pc->debug & L3_DEB_WARN) | |
2484 | l3_debug(pc->st, "resume ack without chid (ret %d)", id); | |
2485 | pc->para.cause = 96; | |
2486 | l3ni1_status_send(pc, pr, NULL); | |
2487 | return; | |
2488 | } | |
2489 | ret = check_infoelements(pc, skb, ie_RESUME_ACKNOWLEDGE); | |
2490 | if (ERR_IE_COMPREHENSION == ret) { | |
2491 | l3ni1_std_ie_err(pc, ret); | |
2492 | return; | |
2493 | } | |
2494 | L3DelTimer(&pc->timer); | |
2495 | pc->st->l3.l3l4(pc->st, CC_RESUME | CONFIRM, pc); | |
2496 | newl3state(pc, 10); | |
2497 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
2498 | l3ni1_std_ie_err(pc, ret); | |
2499 | } | |
2500 | ||
2501 | static void | |
2502 | l3ni1_resume_rej(struct l3_process *pc, u_char pr, void *arg) | |
2503 | { | |
2504 | struct sk_buff *skb = arg; | |
2505 | int ret; | |
2506 | ||
2507 | if ((ret = l3ni1_get_cause(pc, skb))) { | |
2508 | if (pc->debug & L3_DEB_WARN) | |
2509 | l3_debug(pc->st, "RES_REJ get_cause ret(%d)",ret); | |
2510 | if (ret < 0) | |
2511 | pc->para.cause = 96; | |
2512 | else | |
2513 | pc->para.cause = 100; | |
2514 | l3ni1_status_send(pc, pr, NULL); | |
2515 | return; | |
2516 | } | |
2517 | ret = check_infoelements(pc, skb, ie_RESUME_REJECT); | |
2518 | if (ERR_IE_COMPREHENSION == ret) { | |
2519 | l3ni1_std_ie_err(pc, ret); | |
2520 | return; | |
2521 | } | |
2522 | L3DelTimer(&pc->timer); | |
2523 | pc->st->l3.l3l4(pc->st, CC_RESUME_ERR, pc); | |
2524 | newl3state(pc, 0); | |
2525 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
2526 | l3ni1_std_ie_err(pc, ret); | |
2527 | ni1_release_l3_process(pc); | |
2528 | } | |
2529 | ||
2530 | static void | |
2531 | l3ni1_global_restart(struct l3_process *pc, u_char pr, void *arg) | |
2532 | { | |
2533 | u_char tmp[32]; | |
2534 | u_char *p; | |
2535 | u_char ri, ch = 0, chan = 0; | |
2536 | int l; | |
2537 | struct sk_buff *skb = arg; | |
2538 | struct l3_process *up; | |
2539 | ||
2540 | newl3state(pc, 2); | |
2541 | L3DelTimer(&pc->timer); | |
2542 | p = skb->data; | |
2543 | if ((p = findie(p, skb->len, IE_RESTART_IND, 0))) { | |
2544 | ri = p[2]; | |
2545 | l3_debug(pc->st, "Restart %x", ri); | |
2546 | } else { | |
2547 | l3_debug(pc->st, "Restart without restart IE"); | |
2548 | ri = 0x86; | |
2549 | } | |
2550 | p = skb->data; | |
2551 | if ((p = findie(p, skb->len, IE_CHANNEL_ID, 0))) { | |
2552 | chan = p[2] & 3; | |
2553 | ch = p[2]; | |
2554 | if (pc->st->l3.debug) | |
2555 | l3_debug(pc->st, "Restart for channel %d", chan); | |
2556 | } | |
2557 | newl3state(pc, 2); | |
2558 | up = pc->st->l3.proc; | |
2559 | while (up) { | |
2560 | if ((ri & 7) == 7) | |
2561 | up->st->lli.l4l3(up->st, CC_RESTART | REQUEST, up); | |
2562 | else if (up->para.bchannel == chan) | |
2563 | up->st->lli.l4l3(up->st, CC_RESTART | REQUEST, up); | |
2564 | ||
2565 | up = up->next; | |
2566 | } | |
2567 | p = tmp; | |
2568 | MsgHead(p, pc->callref, MT_RESTART_ACKNOWLEDGE); | |
2569 | if (chan) { | |
2570 | *p++ = IE_CHANNEL_ID; | |
2571 | *p++ = 1; | |
2572 | *p++ = ch | 0x80; | |
2573 | } | |
2574 | *p++ = 0x79; /* RESTART Ind */ | |
2575 | *p++ = 1; | |
2576 | *p++ = ri; | |
2577 | l = p - tmp; | |
2578 | if (!(skb = l3_alloc_skb(l))) | |
2579 | return; | |
2580 | memcpy(skb_put(skb, l), tmp, l); | |
2581 | newl3state(pc, 0); | |
2582 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2583 | } | |
2584 | ||
2585 | static void | |
2586 | l3ni1_dl_reset(struct l3_process *pc, u_char pr, void *arg) | |
2587 | { | |
2588 | pc->para.cause = 0x29; /* Temporary failure */ | |
2589 | pc->para.loc = 0; | |
2590 | l3ni1_disconnect_req(pc, pr, NULL); | |
2591 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); | |
2592 | } | |
2593 | ||
2594 | static void | |
2595 | l3ni1_dl_release(struct l3_process *pc, u_char pr, void *arg) | |
2596 | { | |
2597 | newl3state(pc, 0); | |
2598 | pc->para.cause = 0x1b; /* Destination out of order */ | |
2599 | pc->para.loc = 0; | |
2600 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
2601 | release_l3_process(pc); | |
2602 | } | |
2603 | ||
2604 | static void | |
2605 | l3ni1_dl_reestablish(struct l3_process *pc, u_char pr, void *arg) | |
2606 | { | |
2607 | L3DelTimer(&pc->timer); | |
2608 | L3AddTimer(&pc->timer, T309, CC_T309); | |
2609 | l3_msg(pc->st, DL_ESTABLISH | REQUEST, NULL); | |
2610 | } | |
2611 | ||
2612 | static void | |
2613 | l3ni1_dl_reest_status(struct l3_process *pc, u_char pr, void *arg) | |
2614 | { | |
2615 | L3DelTimer(&pc->timer); | |
2616 | ||
2617 | pc->para.cause = 0x1F; /* normal, unspecified */ | |
2618 | l3ni1_status_send(pc, 0, NULL); | |
2619 | } | |
2620 | ||
2621 | static void l3ni1_SendSpid( struct l3_process *pc, u_char pr, struct sk_buff *skb, int iNewState ) | |
2622 | { | |
2623 | u_char * p; | |
2624 | char * pSPID; | |
2625 | struct Channel * pChan = pc->st->lli.userdata; | |
2626 | int l; | |
2627 | ||
2628 | if ( skb ) | |
2629 | dev_kfree_skb( skb); | |
2630 | ||
2631 | if ( !( pSPID = strchr( pChan->setup.eazmsn, ':' ) ) ) | |
2632 | { | |
2633 | printk( KERN_ERR "SPID not supplied in EAZMSN %s\n", pChan->setup.eazmsn ); | |
2634 | newl3state( pc, 0 ); | |
2635 | pc->st->l3.l3l2( pc->st, DL_RELEASE | REQUEST, NULL ); | |
2636 | return; | |
2637 | } | |
2638 | ||
2639 | l = strlen( ++pSPID ); | |
2640 | if ( !( skb = l3_alloc_skb( 5+l ) ) ) | |
2641 | { | |
2642 | printk( KERN_ERR "HiSax can't get memory to send SPID\n" ); | |
2643 | return; | |
2644 | } | |
2645 | ||
2646 | p = skb_put( skb, 5 ); | |
2647 | *p++ = PROTO_DIS_EURO; | |
2648 | *p++ = 0; | |
2649 | *p++ = MT_INFORMATION; | |
2650 | *p++ = IE_SPID; | |
2651 | *p++ = l; | |
2652 | ||
2653 | memcpy( skb_put( skb, l ), pSPID, l ); | |
2654 | ||
2655 | newl3state( pc, iNewState ); | |
2656 | ||
2657 | L3DelTimer( &pc->timer ); | |
2658 | L3AddTimer( &pc->timer, TSPID, CC_TSPID ); | |
2659 | ||
2660 | pc->st->l3.l3l2( pc->st, DL_DATA | REQUEST, skb ); | |
2661 | } | |
2662 | ||
2663 | static void l3ni1_spid_send( struct l3_process *pc, u_char pr, void *arg ) | |
2664 | { | |
2665 | l3ni1_SendSpid( pc, pr, arg, 20 ); | |
2666 | } | |
2667 | ||
672c3fd9 | 2668 | static void l3ni1_spid_epid( struct l3_process *pc, u_char pr, void *arg ) |
1da177e4 LT |
2669 | { |
2670 | struct sk_buff *skb = arg; | |
2671 | ||
2672 | if ( skb->data[ 1 ] == 0 ) | |
2673 | if ( skb->data[ 3 ] == IE_ENDPOINT_ID ) | |
2674 | { | |
2675 | L3DelTimer( &pc->timer ); | |
2676 | newl3state( pc, 0 ); | |
2677 | l3_msg( pc->st, DL_ESTABLISH | CONFIRM, NULL ); | |
2678 | } | |
2679 | dev_kfree_skb( skb); | |
2680 | } | |
2681 | ||
2682 | static void l3ni1_spid_tout( struct l3_process *pc, u_char pr, void *arg ) | |
2683 | { | |
2684 | if ( pc->state < 22 ) | |
2685 | l3ni1_SendSpid( pc, pr, arg, pc->state+1 ); | |
2686 | else | |
2687 | { | |
2688 | L3DelTimer( &pc->timer ); | |
2689 | dev_kfree_skb( arg); | |
2690 | ||
2691 | printk( KERN_ERR "SPID not accepted\n" ); | |
2692 | newl3state( pc, 0 ); | |
2693 | pc->st->l3.l3l2( pc->st, DL_RELEASE | REQUEST, NULL ); | |
2694 | } | |
2695 | } | |
2696 | ||
2697 | /* *INDENT-OFF* */ | |
2698 | static struct stateentry downstatelist[] = | |
2699 | { | |
2700 | {SBIT(0), | |
2701 | CC_SETUP | REQUEST, l3ni1_setup_req}, | |
2702 | {SBIT(0), | |
2703 | CC_RESUME | REQUEST, l3ni1_resume_req}, | |
2704 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(6) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(25), | |
2705 | CC_DISCONNECT | REQUEST, l3ni1_disconnect_req}, | |
2706 | {SBIT(12), | |
2707 | CC_RELEASE | REQUEST, l3ni1_release_req}, | |
2708 | {ALL_STATES, | |
2709 | CC_RESTART | REQUEST, l3ni1_restart}, | |
2710 | {SBIT(6) | SBIT(25), | |
2711 | CC_IGNORE | REQUEST, l3ni1_reset}, | |
2712 | {SBIT(6) | SBIT(25), | |
2713 | CC_REJECT | REQUEST, l3ni1_reject_req}, | |
2714 | {SBIT(6) | SBIT(25), | |
2715 | CC_PROCEED_SEND | REQUEST, l3ni1_proceed_req}, | |
2716 | {SBIT(6), | |
2717 | CC_MORE_INFO | REQUEST, l3ni1_setup_ack_req}, | |
2718 | {SBIT(25), | |
2719 | CC_MORE_INFO | REQUEST, l3ni1_dummy}, | |
2720 | {SBIT(6) | SBIT(9) | SBIT(25), | |
2721 | CC_ALERTING | REQUEST, l3ni1_alert_req}, | |
2722 | {SBIT(6) | SBIT(7) | SBIT(9) | SBIT(25), | |
2723 | CC_SETUP | RESPONSE, l3ni1_setup_rsp}, | |
2724 | {SBIT(10), | |
2725 | CC_SUSPEND | REQUEST, l3ni1_suspend_req}, | |
2726 | {SBIT(7) | SBIT(9) | SBIT(25), | |
2727 | CC_REDIR | REQUEST, l3ni1_redir_req}, | |
2728 | {SBIT(6), | |
2729 | CC_REDIR | REQUEST, l3ni1_redir_req_early}, | |
2730 | {SBIT(9) | SBIT(25), | |
2731 | CC_DISCONNECT | REQUEST, l3ni1_disconnect_req}, | |
2732 | {SBIT(25), | |
2733 | CC_T302, l3ni1_t302}, | |
2734 | {SBIT(1), | |
2735 | CC_T303, l3ni1_t303}, | |
2736 | {SBIT(2), | |
2737 | CC_T304, l3ni1_t304}, | |
2738 | {SBIT(3), | |
2739 | CC_T310, l3ni1_t310}, | |
2740 | {SBIT(8), | |
2741 | CC_T313, l3ni1_t313}, | |
2742 | {SBIT(11), | |
2743 | CC_T305, l3ni1_t305}, | |
2744 | {SBIT(15), | |
2745 | CC_T319, l3ni1_t319}, | |
2746 | {SBIT(17), | |
2747 | CC_T318, l3ni1_t318}, | |
2748 | {SBIT(19), | |
2749 | CC_T308_1, l3ni1_t308_1}, | |
2750 | {SBIT(19), | |
2751 | CC_T308_2, l3ni1_t308_2}, | |
2752 | {SBIT(10), | |
2753 | CC_T309, l3ni1_dl_release}, | |
2754 | { SBIT( 20 ) | SBIT( 21 ) | SBIT( 22 ), | |
2755 | CC_TSPID, l3ni1_spid_tout }, | |
2756 | }; | |
2757 | ||
2758 | #define DOWNSLLEN \ | |
2759 | (sizeof(downstatelist) / sizeof(struct stateentry)) | |
2760 | ||
2761 | static struct stateentry datastatelist[] = | |
2762 | { | |
2763 | {ALL_STATES, | |
2764 | MT_STATUS_ENQUIRY, l3ni1_status_enq}, | |
2765 | {ALL_STATES, | |
2766 | MT_FACILITY, l3ni1_facility}, | |
2767 | {SBIT(19), | |
2768 | MT_STATUS, l3ni1_release_ind}, | |
2769 | {ALL_STATES, | |
2770 | MT_STATUS, l3ni1_status}, | |
2771 | {SBIT(0), | |
2772 | MT_SETUP, l3ni1_setup}, | |
2773 | {SBIT(6) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(12) | | |
2774 | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25), | |
2775 | MT_SETUP, l3ni1_dummy}, | |
2776 | {SBIT(1) | SBIT(2), | |
2777 | MT_CALL_PROCEEDING, l3ni1_call_proc}, | |
2778 | {SBIT(1), | |
2779 | MT_SETUP_ACKNOWLEDGE, l3ni1_setup_ack}, | |
2780 | {SBIT(2) | SBIT(3), | |
2781 | MT_ALERTING, l3ni1_alerting}, | |
2782 | {SBIT(2) | SBIT(3), | |
2783 | MT_PROGRESS, l3ni1_progress}, | |
2784 | {SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | | |
2785 | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25), | |
2786 | MT_INFORMATION, l3ni1_information}, | |
2787 | {SBIT(10) | SBIT(11) | SBIT(15), | |
2788 | MT_NOTIFY, l3ni1_notify}, | |
2789 | {SBIT(0) | SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(10) | | |
2790 | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25), | |
2791 | MT_RELEASE_COMPLETE, l3ni1_release_cmpl}, | |
2792 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(25), | |
2793 | MT_RELEASE, l3ni1_release}, | |
2794 | {SBIT(19), MT_RELEASE, l3ni1_release_ind}, | |
2795 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(15) | SBIT(17) | SBIT(25), | |
2796 | MT_DISCONNECT, l3ni1_disconnect}, | |
2797 | {SBIT(19), | |
2798 | MT_DISCONNECT, l3ni1_dummy}, | |
2799 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4), | |
2800 | MT_CONNECT, l3ni1_connect}, | |
2801 | {SBIT(8), | |
2802 | MT_CONNECT_ACKNOWLEDGE, l3ni1_connect_ack}, | |
2803 | {SBIT(15), | |
2804 | MT_SUSPEND_ACKNOWLEDGE, l3ni1_suspend_ack}, | |
2805 | {SBIT(15), | |
2806 | MT_SUSPEND_REJECT, l3ni1_suspend_rej}, | |
2807 | {SBIT(17), | |
2808 | MT_RESUME_ACKNOWLEDGE, l3ni1_resume_ack}, | |
2809 | {SBIT(17), | |
2810 | MT_RESUME_REJECT, l3ni1_resume_rej}, | |
2811 | }; | |
2812 | ||
2813 | #define DATASLLEN \ | |
2814 | (sizeof(datastatelist) / sizeof(struct stateentry)) | |
2815 | ||
2816 | static struct stateentry globalmes_list[] = | |
2817 | { | |
2818 | {ALL_STATES, | |
2819 | MT_STATUS, l3ni1_status}, | |
2820 | {SBIT(0), | |
2821 | MT_RESTART, l3ni1_global_restart}, | |
2822 | /* {SBIT(1), | |
2823 | MT_RESTART_ACKNOWLEDGE, l3ni1_restart_ack}, | |
2824 | */ | |
2825 | { SBIT( 0 ), MT_DL_ESTABLISHED, l3ni1_spid_send }, | |
2826 | { SBIT( 20 ) | SBIT( 21 ) | SBIT( 22 ), MT_INFORMATION, l3ni1_spid_epid }, | |
2827 | }; | |
2828 | #define GLOBALM_LEN \ | |
2829 | (sizeof(globalmes_list) / sizeof(struct stateentry)) | |
2830 | ||
2831 | static struct stateentry manstatelist[] = | |
2832 | { | |
2833 | {SBIT(2), | |
2834 | DL_ESTABLISH | INDICATION, l3ni1_dl_reset}, | |
2835 | {SBIT(10), | |
2836 | DL_ESTABLISH | CONFIRM, l3ni1_dl_reest_status}, | |
2837 | {SBIT(10), | |
2838 | DL_RELEASE | INDICATION, l3ni1_dl_reestablish}, | |
2839 | {ALL_STATES, | |
2840 | DL_RELEASE | INDICATION, l3ni1_dl_release}, | |
2841 | }; | |
2842 | ||
2843 | #define MANSLLEN \ | |
2844 | (sizeof(manstatelist) / sizeof(struct stateentry)) | |
2845 | /* *INDENT-ON* */ | |
2846 | ||
2847 | ||
2848 | static void | |
2849 | global_handler(struct PStack *st, int mt, struct sk_buff *skb) | |
2850 | { | |
2851 | u_char tmp[16]; | |
2852 | u_char *p = tmp; | |
2853 | int l; | |
2854 | int i; | |
2855 | struct l3_process *proc = st->l3.global; | |
2856 | ||
2857 | if ( skb ) | |
2858 | proc->callref = skb->data[2]; /* cr flag */ | |
2859 | else | |
2860 | proc->callref = 0; | |
2861 | for (i = 0; i < GLOBALM_LEN; i++) | |
2862 | if ((mt == globalmes_list[i].primitive) && | |
2863 | ((1 << proc->state) & globalmes_list[i].state)) | |
2864 | break; | |
2865 | if (i == GLOBALM_LEN) { | |
2866 | if (st->l3.debug & L3_DEB_STATE) { | |
2867 | l3_debug(st, "ni1 global state %d mt %x unhandled", | |
2868 | proc->state, mt); | |
2869 | } | |
2870 | MsgHead(p, proc->callref, MT_STATUS); | |
2871 | *p++ = IE_CAUSE; | |
2872 | *p++ = 0x2; | |
2873 | *p++ = 0x80; | |
2874 | *p++ = 81 |0x80; /* invalid cr */ | |
2875 | *p++ = 0x14; /* CallState */ | |
2876 | *p++ = 0x1; | |
2877 | *p++ = proc->state & 0x3f; | |
2878 | l = p - tmp; | |
2879 | if (!(skb = l3_alloc_skb(l))) | |
2880 | return; | |
2881 | memcpy(skb_put(skb, l), tmp, l); | |
2882 | l3_msg(proc->st, DL_DATA | REQUEST, skb); | |
2883 | } else { | |
2884 | if (st->l3.debug & L3_DEB_STATE) { | |
2885 | l3_debug(st, "ni1 global %d mt %x", | |
2886 | proc->state, mt); | |
2887 | } | |
2888 | globalmes_list[i].rout(proc, mt, skb); | |
2889 | } | |
2890 | } | |
2891 | ||
2892 | static void | |
2893 | ni1up(struct PStack *st, int pr, void *arg) | |
2894 | { | |
2895 | int i, mt, cr, cause, callState; | |
2896 | char *ptr; | |
2897 | u_char *p; | |
2898 | struct sk_buff *skb = arg; | |
2899 | struct l3_process *proc; | |
2900 | ||
2901 | switch (pr) { | |
2902 | case (DL_DATA | INDICATION): | |
2903 | case (DL_UNIT_DATA | INDICATION): | |
2904 | break; | |
2905 | case (DL_ESTABLISH | INDICATION): | |
2906 | case (DL_RELEASE | INDICATION): | |
2907 | case (DL_RELEASE | CONFIRM): | |
2908 | l3_msg(st, pr, arg); | |
2909 | return; | |
2910 | break; | |
2911 | ||
2912 | case (DL_ESTABLISH | CONFIRM): | |
2913 | global_handler( st, MT_DL_ESTABLISHED, NULL ); | |
2914 | return; | |
2915 | ||
2916 | default: | |
2917 | printk(KERN_ERR "HiSax ni1up unknown pr=%04x\n", pr); | |
2918 | return; | |
2919 | } | |
2920 | if (skb->len < 3) { | |
2921 | l3_debug(st, "ni1up frame too short(%d)", skb->len); | |
2922 | dev_kfree_skb(skb); | |
2923 | return; | |
2924 | } | |
2925 | ||
2926 | if (skb->data[0] != PROTO_DIS_EURO) { | |
2927 | if (st->l3.debug & L3_DEB_PROTERR) { | |
2928 | l3_debug(st, "ni1up%sunexpected discriminator %x message len %d", | |
2929 | (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", | |
2930 | skb->data[0], skb->len); | |
2931 | } | |
2932 | dev_kfree_skb(skb); | |
2933 | return; | |
2934 | } | |
2935 | cr = getcallref(skb->data); | |
2936 | if (skb->len < ((skb->data[1] & 0x0f) + 3)) { | |
2937 | l3_debug(st, "ni1up frame too short(%d)", skb->len); | |
2938 | dev_kfree_skb(skb); | |
2939 | return; | |
2940 | } | |
2941 | mt = skb->data[skb->data[1] + 2]; | |
2942 | if (st->l3.debug & L3_DEB_STATE) | |
2943 | l3_debug(st, "ni1up cr %d", cr); | |
2944 | if (cr == -2) { /* wrong Callref */ | |
2945 | if (st->l3.debug & L3_DEB_WARN) | |
2946 | l3_debug(st, "ni1up wrong Callref"); | |
2947 | dev_kfree_skb(skb); | |
2948 | return; | |
2949 | } else if (cr == -1) { /* Dummy Callref */ | |
2950 | if (mt == MT_FACILITY) | |
2951 | { | |
2952 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) { | |
2953 | l3ni1_parse_facility(st, NULL, | |
2954 | (pr == (DL_DATA | INDICATION)) ? -1 : -2, p); | |
2955 | dev_kfree_skb(skb); | |
2956 | return; | |
2957 | } | |
2958 | } | |
2959 | else | |
2960 | { | |
2961 | global_handler(st, mt, skb); | |
2962 | return; | |
2963 | } | |
2964 | ||
2965 | if (st->l3.debug & L3_DEB_WARN) | |
2966 | l3_debug(st, "ni1up dummy Callref (no facility msg or ie)"); | |
2967 | dev_kfree_skb(skb); | |
2968 | return; | |
2969 | } else if ((((skb->data[1] & 0x0f) == 1) && (0==(cr & 0x7f))) || | |
2970 | (((skb->data[1] & 0x0f) == 2) && (0==(cr & 0x7fff)))) { /* Global CallRef */ | |
2971 | if (st->l3.debug & L3_DEB_STATE) | |
2972 | l3_debug(st, "ni1up Global CallRef"); | |
2973 | global_handler(st, mt, skb); | |
2974 | dev_kfree_skb(skb); | |
2975 | return; | |
2976 | } else if (!(proc = getl3proc(st, cr))) { | |
2977 | /* No transaction process exist, that means no call with | |
2978 | * this callreference is active | |
2979 | */ | |
2980 | if (mt == MT_SETUP) { | |
2981 | /* Setup creates a new transaction process */ | |
2982 | if (skb->data[2] & 0x80) { | |
2983 | /* Setup with wrong CREF flag */ | |
2984 | if (st->l3.debug & L3_DEB_STATE) | |
2985 | l3_debug(st, "ni1up wrong CRef flag"); | |
2986 | dev_kfree_skb(skb); | |
2987 | return; | |
2988 | } | |
2989 | if (!(proc = ni1_new_l3_process(st, cr))) { | |
2990 | /* May be to answer with RELEASE_COMPLETE and | |
2991 | * CAUSE 0x2f "Resource unavailable", but this | |
2992 | * need a new_l3_process too ... arghh | |
2993 | */ | |
2994 | dev_kfree_skb(skb); | |
2995 | return; | |
2996 | } | |
2997 | } else if (mt == MT_STATUS) { | |
2998 | cause = 0; | |
2999 | if ((ptr = findie(skb->data, skb->len, IE_CAUSE, 0)) != NULL) { | |
3000 | ptr++; | |
3001 | if (*ptr++ == 2) | |
3002 | ptr++; | |
3003 | cause = *ptr & 0x7f; | |
3004 | } | |
3005 | callState = 0; | |
3006 | if ((ptr = findie(skb->data, skb->len, IE_CALL_STATE, 0)) != NULL) { | |
3007 | ptr++; | |
3008 | if (*ptr++ == 2) | |
3009 | ptr++; | |
3010 | callState = *ptr; | |
3011 | } | |
3012 | /* ETS 300-104 part 2.4.1 | |
3013 | * if setup has not been made and a message type | |
3014 | * MT_STATUS is received with call state == 0, | |
3015 | * we must send nothing | |
3016 | */ | |
3017 | if (callState != 0) { | |
3018 | /* ETS 300-104 part 2.4.2 | |
3019 | * if setup has not been made and a message type | |
3020 | * MT_STATUS is received with call state != 0, | |
3021 | * we must send MT_RELEASE_COMPLETE cause 101 | |
3022 | */ | |
3023 | if ((proc = ni1_new_l3_process(st, cr))) { | |
3024 | proc->para.cause = 101; | |
3025 | l3ni1_msg_without_setup(proc, 0, NULL); | |
3026 | } | |
3027 | } | |
3028 | dev_kfree_skb(skb); | |
3029 | return; | |
3030 | } else if (mt == MT_RELEASE_COMPLETE) { | |
3031 | dev_kfree_skb(skb); | |
3032 | return; | |
3033 | } else { | |
3034 | /* ETS 300-104 part 2 | |
3035 | * if setup has not been made and a message type | |
3036 | * (except MT_SETUP and RELEASE_COMPLETE) is received, | |
3037 | * we must send MT_RELEASE_COMPLETE cause 81 */ | |
3038 | dev_kfree_skb(skb); | |
3039 | if ((proc = ni1_new_l3_process(st, cr))) { | |
3040 | proc->para.cause = 81; | |
3041 | l3ni1_msg_without_setup(proc, 0, NULL); | |
3042 | } | |
3043 | return; | |
3044 | } | |
3045 | } | |
3046 | if (l3ni1_check_messagetype_validity(proc, mt, skb)) { | |
3047 | dev_kfree_skb(skb); | |
3048 | return; | |
3049 | } | |
3050 | if ((p = findie(skb->data, skb->len, IE_DISPLAY, 0)) != NULL) | |
3051 | l3ni1_deliver_display(proc, pr, p); /* Display IE included */ | |
3052 | for (i = 0; i < DATASLLEN; i++) | |
3053 | if ((mt == datastatelist[i].primitive) && | |
3054 | ((1 << proc->state) & datastatelist[i].state)) | |
3055 | break; | |
3056 | if (i == DATASLLEN) { | |
3057 | if (st->l3.debug & L3_DEB_STATE) { | |
3058 | l3_debug(st, "ni1up%sstate %d mt %#x unhandled", | |
3059 | (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", | |
3060 | proc->state, mt); | |
3061 | } | |
3062 | if ((MT_RELEASE_COMPLETE != mt) && (MT_RELEASE != mt)) { | |
3063 | proc->para.cause = 101; | |
3064 | l3ni1_status_send(proc, pr, skb); | |
3065 | } | |
3066 | } else { | |
3067 | if (st->l3.debug & L3_DEB_STATE) { | |
3068 | l3_debug(st, "ni1up%sstate %d mt %x", | |
3069 | (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", | |
3070 | proc->state, mt); | |
3071 | } | |
3072 | datastatelist[i].rout(proc, pr, skb); | |
3073 | } | |
3074 | dev_kfree_skb(skb); | |
3075 | return; | |
3076 | } | |
3077 | ||
3078 | static void | |
3079 | ni1down(struct PStack *st, int pr, void *arg) | |
3080 | { | |
3081 | int i, cr; | |
3082 | struct l3_process *proc; | |
3083 | struct Channel *chan; | |
3084 | ||
3085 | if ((DL_ESTABLISH | REQUEST) == pr) { | |
3086 | l3_msg(st, pr, NULL); | |
3087 | return; | |
3088 | } else if (((CC_SETUP | REQUEST) == pr) || ((CC_RESUME | REQUEST) == pr)) { | |
3089 | chan = arg; | |
3090 | cr = newcallref(); | |
3091 | cr |= 0x80; | |
3092 | if ((proc = ni1_new_l3_process(st, cr))) { | |
3093 | proc->chan = chan; | |
3094 | chan->proc = proc; | |
3095 | memcpy(&proc->para.setup, &chan->setup, sizeof(setup_parm)); | |
3096 | proc->callref = cr; | |
3097 | } | |
3098 | } else { | |
3099 | proc = arg; | |
3100 | } | |
3101 | if (!proc) { | |
3102 | printk(KERN_ERR "HiSax ni1down without proc pr=%04x\n", pr); | |
3103 | return; | |
3104 | } | |
3105 | ||
3106 | if ( pr == (CC_TNI1_IO | REQUEST)) { | |
3107 | l3ni1_io_timer(proc); /* timer expires */ | |
3108 | return; | |
3109 | } | |
3110 | ||
3111 | for (i = 0; i < DOWNSLLEN; i++) | |
3112 | if ((pr == downstatelist[i].primitive) && | |
3113 | ((1 << proc->state) & downstatelist[i].state)) | |
3114 | break; | |
3115 | if (i == DOWNSLLEN) { | |
3116 | if (st->l3.debug & L3_DEB_STATE) { | |
3117 | l3_debug(st, "ni1down state %d prim %#x unhandled", | |
3118 | proc->state, pr); | |
3119 | } | |
3120 | } else { | |
3121 | if (st->l3.debug & L3_DEB_STATE) { | |
3122 | l3_debug(st, "ni1down state %d prim %#x", | |
3123 | proc->state, pr); | |
3124 | } | |
3125 | downstatelist[i].rout(proc, pr, arg); | |
3126 | } | |
3127 | } | |
3128 | ||
3129 | static void | |
3130 | ni1man(struct PStack *st, int pr, void *arg) | |
3131 | { | |
3132 | int i; | |
3133 | struct l3_process *proc = arg; | |
3134 | ||
3135 | if (!proc) { | |
3136 | printk(KERN_ERR "HiSax ni1man without proc pr=%04x\n", pr); | |
3137 | return; | |
3138 | } | |
3139 | for (i = 0; i < MANSLLEN; i++) | |
3140 | if ((pr == manstatelist[i].primitive) && | |
3141 | ((1 << proc->state) & manstatelist[i].state)) | |
3142 | break; | |
3143 | if (i == MANSLLEN) { | |
3144 | if (st->l3.debug & L3_DEB_STATE) { | |
3145 | l3_debug(st, "cr %d ni1man state %d prim %#x unhandled", | |
3146 | proc->callref & 0x7f, proc->state, pr); | |
3147 | } | |
3148 | } else { | |
3149 | if (st->l3.debug & L3_DEB_STATE) { | |
3150 | l3_debug(st, "cr %d ni1man state %d prim %#x", | |
3151 | proc->callref & 0x7f, proc->state, pr); | |
3152 | } | |
3153 | manstatelist[i].rout(proc, pr, arg); | |
3154 | } | |
3155 | } | |
3156 | ||
3157 | void | |
3158 | setstack_ni1(struct PStack *st) | |
3159 | { | |
3160 | char tmp[64]; | |
3161 | int i; | |
3162 | ||
3163 | st->lli.l4l3 = ni1down; | |
3164 | st->lli.l4l3_proto = l3ni1_cmd_global; | |
3165 | st->l2.l2l3 = ni1up; | |
3166 | st->l3.l3ml3 = ni1man; | |
3167 | st->l3.N303 = 1; | |
3168 | st->prot.ni1.last_invoke_id = 0; | |
3169 | st->prot.ni1.invoke_used[0] = 1; /* Bit 0 must always be set to 1 */ | |
3170 | i = 1; | |
3171 | while (i < 32) | |
3172 | st->prot.ni1.invoke_used[i++] = 0; | |
3173 | ||
3174 | if (!(st->l3.global = kmalloc(sizeof(struct l3_process), GFP_ATOMIC))) { | |
3175 | printk(KERN_ERR "HiSax can't get memory for ni1 global CR\n"); | |
3176 | } else { | |
3177 | st->l3.global->state = 0; | |
3178 | st->l3.global->callref = 0; | |
3179 | st->l3.global->next = NULL; | |
3180 | st->l3.global->debug = L3_DEB_WARN; | |
3181 | st->l3.global->st = st; | |
3182 | st->l3.global->N303 = 1; | |
3183 | st->l3.global->prot.ni1.invoke_id = 0; | |
3184 | ||
3185 | L3InitTimer(st->l3.global, &st->l3.global->timer); | |
3186 | } | |
3187 | strcpy(tmp, ni1_revision); | |
3188 | printk(KERN_INFO "HiSax: National ISDN-1 Rev. %s\n", HiSax_getrev(tmp)); | |
3189 | } |