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1da177e4 LT |
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 | |
475be4d8 | 7 | * |
1da177e4 LT |
8 | * This software may be used and distributed according to the terms |
9 | * of the GNU General Public License, incorporated herein by reference. | |
10 | * | |
475be4d8 JP |
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.... | |
1da177e4 LT |
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> | |
5a0e3ad6 | 25 | #include <linux/slab.h> |
1da177e4 LT |
26 | |
27 | extern char *HiSax_getrev(const char *revision); | |
672c3fd9 | 28 | static const char *ni1_revision = "$Revision: 2.8.2.3 $"; |
1da177e4 LT |
29 | |
30 | #define EXT_BEARER_CAPS 1 | |
31 | ||
475be4d8 JP |
32 | #define MsgHead(ptr, cref, mty) \ |
33 | *ptr++ = 0x8; \ | |
34 | if (cref == -1) { \ | |
35 | *ptr++ = 0x0; \ | |
36 | } else { \ | |
37 | *ptr++ = 0x1; \ | |
38 | *ptr++ = cref^0x80; \ | |
39 | } \ | |
1da177e4 LT |
40 | *ptr++ = mty |
41 | ||
42 | ||
43 | /**********************************************/ | |
44 | /* get a new invoke id for remote operations. */ | |
45 | /* Only a return value != 0 is valid */ | |
46 | /**********************************************/ | |
47 | static unsigned char new_invoke_id(struct PStack *p) | |
48 | { | |
49 | unsigned char retval; | |
50 | int i; | |
475be4d8 | 51 | |
1da177e4 LT |
52 | i = 32; /* maximum search depth */ |
53 | ||
54 | retval = p->prot.ni1.last_invoke_id + 1; /* try new id */ | |
55 | while ((i) && (p->prot.ni1.invoke_used[retval >> 3] == 0xFF)) { | |
56 | p->prot.ni1.last_invoke_id = (retval & 0xF8) + 8; | |
57 | i--; | |
475be4d8 | 58 | } |
1da177e4 LT |
59 | if (i) { |
60 | while (p->prot.ni1.invoke_used[retval >> 3] & (1 << (retval & 7))) | |
475be4d8 | 61 | retval++; |
1da177e4 LT |
62 | } else |
63 | retval = 0; | |
64 | p->prot.ni1.last_invoke_id = retval; | |
65 | p->prot.ni1.invoke_used[retval >> 3] |= (1 << (retval & 7)); | |
475be4d8 | 66 | return (retval); |
1da177e4 LT |
67 | } /* new_invoke_id */ |
68 | ||
69 | /*************************/ | |
70 | /* free a used invoke id */ | |
71 | /*************************/ | |
72 | static void free_invoke_id(struct PStack *p, unsigned char id) | |
73 | { | |
74 | ||
475be4d8 | 75 | if (!id) return; /* 0 = invalid value */ |
1da177e4 | 76 | |
475be4d8 JP |
77 | p->prot.ni1.invoke_used[id >> 3] &= ~(1 << (id & 7)); |
78 | } /* free_invoke_id */ | |
1da177e4 LT |
79 | |
80 | ||
81 | /**********************************************************/ | |
82 | /* create a new l3 process and fill in ni1 specific data */ | |
83 | /**********************************************************/ | |
84 | static struct l3_process | |
85 | *ni1_new_l3_process(struct PStack *st, int cr) | |
86 | { struct l3_process *proc; | |
87 | ||
475be4d8 JP |
88 | if (!(proc = new_l3_process(st, cr))) |
89 | return (NULL); | |
1da177e4 | 90 | |
475be4d8 JP |
91 | proc->prot.ni1.invoke_id = 0; |
92 | proc->prot.ni1.remote_operation = 0; | |
93 | proc->prot.ni1.uus1_data[0] = '\0'; | |
94 | ||
95 | return (proc); | |
1da177e4 LT |
96 | } /* ni1_new_l3_process */ |
97 | ||
98 | /************************************************/ | |
99 | /* free a l3 process and all ni1 specific data */ | |
475be4d8 | 100 | /************************************************/ |
1da177e4 LT |
101 | static void |
102 | ni1_release_l3_process(struct l3_process *p) | |
103 | { | |
475be4d8 JP |
104 | free_invoke_id(p->st, p->prot.ni1.invoke_id); |
105 | release_l3_process(p); | |
1da177e4 | 106 | } /* ni1_release_l3_process */ |
475be4d8 | 107 | |
1da177e4 LT |
108 | /********************************************************/ |
109 | /* search a process with invoke id id and dummy callref */ | |
110 | /********************************************************/ | |
111 | static struct l3_process * | |
112 | l3ni1_search_dummy_proc(struct PStack *st, int id) | |
113 | { struct l3_process *pc = st->l3.proc; /* start of processes */ | |
114 | ||
475be4d8 | 115 | if (!id) return (NULL); |
1da177e4 | 116 | |
475be4d8 JP |
117 | while (pc) |
118 | { if ((pc->callref == -1) && (pc->prot.ni1.invoke_id == id)) | |
119 | return (pc); | |
120 | pc = pc->next; | |
121 | } | |
122 | return (NULL); | |
1da177e4 LT |
123 | } /* l3ni1_search_dummy_proc */ |
124 | ||
125 | /*******************************************************************/ | |
126 | /* called when a facility message with a dummy callref is received */ | |
127 | /* and a return result is delivered. id specifies the invoke id. */ | |
475be4d8 JP |
128 | /*******************************************************************/ |
129 | static void | |
1da177e4 LT |
130 | l3ni1_dummy_return_result(struct PStack *st, int id, u_char *p, u_char nlen) |
131 | { isdn_ctrl ic; | |
475be4d8 JP |
132 | struct IsdnCardState *cs; |
133 | struct l3_process *pc = NULL; | |
134 | ||
135 | if ((pc = l3ni1_search_dummy_proc(st, id))) | |
136 | { L3DelTimer(&pc->timer); /* remove timer */ | |
137 | ||
138 | cs = pc->st->l1.hardware; | |
139 | ic.driver = cs->myid; | |
140 | ic.command = ISDN_STAT_PROT; | |
141 | ic.arg = NI1_STAT_INVOKE_RES; | |
142 | ic.parm.ni1_io.hl_id = pc->prot.ni1.invoke_id; | |
143 | ic.parm.ni1_io.ll_id = pc->prot.ni1.ll_id; | |
144 | ic.parm.ni1_io.proc = pc->prot.ni1.proc; | |
145 | ic.parm.ni1_io.timeout = 0; | |
146 | ic.parm.ni1_io.datalen = nlen; | |
147 | ic.parm.ni1_io.data = p; | |
148 | free_invoke_id(pc->st, pc->prot.ni1.invoke_id); | |
149 | pc->prot.ni1.invoke_id = 0; /* reset id */ | |
150 | ||
151 | cs->iif.statcallb(&ic); | |
152 | ni1_release_l3_process(pc); | |
153 | } | |
154 | else | |
155 | l3_debug(st, "dummy return result id=0x%x result len=%d", id, nlen); | |
1da177e4 LT |
156 | } /* l3ni1_dummy_return_result */ |
157 | ||
158 | /*******************************************************************/ | |
159 | /* called when a facility message with a dummy callref is received */ | |
160 | /* and a return error is delivered. id specifies the invoke id. */ | |
475be4d8 JP |
161 | /*******************************************************************/ |
162 | static void | |
1da177e4 LT |
163 | l3ni1_dummy_error_return(struct PStack *st, int id, ulong error) |
164 | { isdn_ctrl ic; | |
475be4d8 JP |
165 | struct IsdnCardState *cs; |
166 | struct l3_process *pc = NULL; | |
167 | ||
168 | if ((pc = l3ni1_search_dummy_proc(st, id))) | |
169 | { L3DelTimer(&pc->timer); /* remove timer */ | |
170 | ||
171 | cs = pc->st->l1.hardware; | |
172 | ic.driver = cs->myid; | |
173 | ic.command = ISDN_STAT_PROT; | |
174 | ic.arg = NI1_STAT_INVOKE_ERR; | |
175 | ic.parm.ni1_io.hl_id = pc->prot.ni1.invoke_id; | |
176 | ic.parm.ni1_io.ll_id = pc->prot.ni1.ll_id; | |
177 | ic.parm.ni1_io.proc = pc->prot.ni1.proc; | |
178 | ic.parm.ni1_io.timeout = error; | |
179 | ic.parm.ni1_io.datalen = 0; | |
180 | ic.parm.ni1_io.data = NULL; | |
181 | free_invoke_id(pc->st, pc->prot.ni1.invoke_id); | |
182 | pc->prot.ni1.invoke_id = 0; /* reset id */ | |
183 | ||
184 | cs->iif.statcallb(&ic); | |
185 | ni1_release_l3_process(pc); | |
186 | } | |
187 | else | |
188 | l3_debug(st, "dummy return error id=0x%x error=0x%lx", id, error); | |
1da177e4 LT |
189 | } /* l3ni1_error_return */ |
190 | ||
191 | /*******************************************************************/ | |
192 | /* called when a facility message with a dummy callref is received */ | |
193 | /* and a invoke is delivered. id specifies the invoke id. */ | |
475be4d8 JP |
194 | /*******************************************************************/ |
195 | static void | |
196 | l3ni1_dummy_invoke(struct PStack *st, int cr, int id, | |
197 | int ident, u_char *p, u_char nlen) | |
1da177e4 | 198 | { isdn_ctrl ic; |
475be4d8 JP |
199 | struct IsdnCardState *cs; |
200 | ||
201 | l3_debug(st, "dummy invoke %s id=0x%x ident=0x%x datalen=%d", | |
202 | (cr == -1) ? "local" : "broadcast", id, ident, nlen); | |
203 | if (cr >= -1) return; /* ignore local data */ | |
204 | ||
205 | cs = st->l1.hardware; | |
206 | ic.driver = cs->myid; | |
207 | ic.command = ISDN_STAT_PROT; | |
208 | ic.arg = NI1_STAT_INVOKE_BRD; | |
209 | ic.parm.ni1_io.hl_id = id; | |
210 | ic.parm.ni1_io.ll_id = 0; | |
211 | ic.parm.ni1_io.proc = ident; | |
212 | ic.parm.ni1_io.timeout = 0; | |
213 | ic.parm.ni1_io.datalen = nlen; | |
214 | ic.parm.ni1_io.data = p; | |
215 | ||
216 | cs->iif.statcallb(&ic); | |
1da177e4 LT |
217 | } /* l3ni1_dummy_invoke */ |
218 | ||
219 | static void | |
220 | l3ni1_parse_facility(struct PStack *st, struct l3_process *pc, | |
475be4d8 | 221 | int cr, u_char *p) |
1da177e4 LT |
222 | { |
223 | int qd_len = 0; | |
224 | unsigned char nlen = 0, ilen, cp_tag; | |
225 | int ident, id; | |
226 | ulong err_ret; | |
227 | ||
475be4d8 | 228 | if (pc) |
1da177e4 LT |
229 | st = pc->st; /* valid Stack */ |
230 | else | |
231 | if ((!st) || (cr >= 0)) return; /* neither pc nor st specified */ | |
232 | ||
233 | p++; | |
234 | qd_len = *p++; | |
235 | if (qd_len == 0) { | |
236 | l3_debug(st, "qd_len == 0"); | |
237 | return; | |
238 | } | |
239 | if ((*p & 0x1F) != 0x11) { /* Service discriminator, supplementary service */ | |
240 | l3_debug(st, "supplementary service != 0x11"); | |
241 | return; | |
242 | } | |
243 | while (qd_len > 0 && !(*p & 0x80)) { /* extension ? */ | |
244 | p++; | |
245 | qd_len--; | |
246 | } | |
247 | if (qd_len < 2) { | |
248 | l3_debug(st, "qd_len < 2"); | |
249 | return; | |
250 | } | |
251 | p++; | |
252 | qd_len--; | |
253 | if ((*p & 0xE0) != 0xA0) { /* class and form */ | |
254 | l3_debug(st, "class and form != 0xA0"); | |
255 | return; | |
256 | } | |
1da177e4 | 257 | |
475be4d8 JP |
258 | cp_tag = *p & 0x1F; /* remember tag value */ |
259 | ||
260 | p++; | |
1da177e4 | 261 | qd_len--; |
475be4d8 JP |
262 | if (qd_len < 1) |
263 | { l3_debug(st, "qd_len < 1"); | |
264 | return; | |
265 | } | |
266 | if (*p & 0x80) | |
267 | { /* length format indefinite or limited */ | |
268 | nlen = *p++ & 0x7F; /* number of len bytes or indefinite */ | |
269 | if ((qd_len-- < ((!nlen) ? 3 : (1 + nlen))) || | |
270 | (nlen > 1)) | |
271 | { l3_debug(st, "length format error or not implemented"); | |
272 | return; | |
273 | } | |
274 | if (nlen == 1) | |
275 | { nlen = *p++; /* complete length */ | |
276 | qd_len--; | |
277 | } | |
278 | else | |
279 | { qd_len -= 2; /* trailing null bytes */ | |
280 | if ((*(p + qd_len)) || (*(p + qd_len + 1))) | |
281 | { l3_debug(st, "length format indefinite error"); | |
282 | return; | |
283 | } | |
284 | nlen = qd_len; | |
285 | } | |
286 | } | |
287 | else | |
288 | { nlen = *p++; | |
289 | qd_len--; | |
290 | } | |
291 | if (qd_len < nlen) | |
292 | { l3_debug(st, "qd_len < nlen"); | |
293 | return; | |
294 | } | |
1da177e4 LT |
295 | qd_len -= nlen; |
296 | ||
475be4d8 JP |
297 | if (nlen < 2) |
298 | { l3_debug(st, "nlen < 2"); | |
299 | return; | |
300 | } | |
301 | if (*p != 0x02) | |
302 | { /* invoke identifier tag */ | |
303 | l3_debug(st, "invoke identifier tag !=0x02"); | |
304 | return; | |
305 | } | |
1da177e4 LT |
306 | p++; |
307 | nlen--; | |
475be4d8 JP |
308 | if (*p & 0x80) |
309 | { /* length format */ | |
310 | l3_debug(st, "invoke id length format 2"); | |
311 | return; | |
312 | } | |
1da177e4 LT |
313 | ilen = *p++; |
314 | nlen--; | |
475be4d8 JP |
315 | if (ilen > nlen || ilen == 0) |
316 | { l3_debug(st, "ilen > nlen || ilen == 0"); | |
317 | return; | |
318 | } | |
1da177e4 LT |
319 | nlen -= ilen; |
320 | id = 0; | |
475be4d8 JP |
321 | while (ilen > 0) |
322 | { id = (id << 8) | (*p++ & 0xFF); /* invoke identifier */ | |
323 | ilen--; | |
324 | } | |
1da177e4 LT |
325 | |
326 | switch (cp_tag) { /* component tag */ | |
475be4d8 JP |
327 | case 1: /* invoke */ |
328 | if (nlen < 2) { | |
329 | l3_debug(st, "nlen < 2 22"); | |
330 | return; | |
331 | } | |
332 | if (*p != 0x02) { /* operation value */ | |
333 | l3_debug(st, "operation value !=0x02"); | |
334 | return; | |
335 | } | |
336 | p++; | |
337 | nlen--; | |
338 | ilen = *p++; | |
339 | nlen--; | |
340 | if (ilen > nlen || ilen == 0) { | |
341 | l3_debug(st, "ilen > nlen || ilen == 0 22"); | |
342 | return; | |
343 | } | |
344 | nlen -= ilen; | |
345 | ident = 0; | |
346 | while (ilen > 0) { | |
347 | ident = (ident << 8) | (*p++ & 0xFF); | |
348 | ilen--; | |
349 | } | |
1da177e4 | 350 | |
475be4d8 JP |
351 | if (!pc) |
352 | { | |
353 | l3ni1_dummy_invoke(st, cr, id, ident, p, nlen); | |
354 | return; | |
355 | } | |
356 | l3_debug(st, "invoke break"); | |
357 | break; | |
358 | case 2: /* return result */ | |
359 | /* if no process available handle separately */ | |
360 | if (!pc) | |
361 | { if (cr == -1) | |
362 | l3ni1_dummy_return_result(st, id, p, nlen); | |
363 | return; | |
364 | } | |
365 | if ((pc->prot.ni1.invoke_id) && (pc->prot.ni1.invoke_id == id)) | |
366 | { /* Diversion successful */ | |
367 | free_invoke_id(st, pc->prot.ni1.invoke_id); | |
368 | pc->prot.ni1.remote_result = 0; /* success */ | |
369 | pc->prot.ni1.invoke_id = 0; | |
370 | pc->redir_result = pc->prot.ni1.remote_result; | |
371 | st->l3.l3l4(st, CC_REDIR | INDICATION, pc); } /* Diversion successful */ | |
372 | else | |
373 | l3_debug(st, "return error unknown identifier"); | |
374 | break; | |
375 | case 3: /* return error */ | |
376 | err_ret = 0; | |
377 | if (nlen < 2) | |
378 | { l3_debug(st, "return error nlen < 2"); | |
379 | return; | |
380 | } | |
381 | if (*p != 0x02) | |
382 | { /* result tag */ | |
383 | l3_debug(st, "invoke error tag !=0x02"); | |
384 | return; | |
385 | } | |
386 | p++; | |
387 | nlen--; | |
388 | if (*p > 4) | |
389 | { /* length format */ | |
390 | l3_debug(st, "invoke return errlen > 4 "); | |
391 | return; | |
392 | } | |
393 | ilen = *p++; | |
394 | nlen--; | |
395 | if (ilen > nlen || ilen == 0) | |
396 | { l3_debug(st, "error return ilen > nlen || ilen == 0"); | |
397 | return; | |
398 | } | |
399 | nlen -= ilen; | |
400 | while (ilen > 0) | |
401 | { err_ret = (err_ret << 8) | (*p++ & 0xFF); /* error value */ | |
402 | ilen--; | |
403 | } | |
404 | /* if no process available handle separately */ | |
405 | if (!pc) | |
406 | { if (cr == -1) | |
407 | l3ni1_dummy_error_return(st, id, err_ret); | |
408 | return; | |
409 | } | |
410 | if ((pc->prot.ni1.invoke_id) && (pc->prot.ni1.invoke_id == id)) | |
411 | { /* Deflection error */ | |
412 | free_invoke_id(st, pc->prot.ni1.invoke_id); | |
413 | pc->prot.ni1.remote_result = err_ret; /* result */ | |
414 | pc->prot.ni1.invoke_id = 0; | |
415 | pc->redir_result = pc->prot.ni1.remote_result; | |
416 | st->l3.l3l4(st, CC_REDIR | INDICATION, pc); | |
417 | } /* Deflection error */ | |
418 | else | |
419 | l3_debug(st, "return result unknown identifier"); | |
420 | break; | |
421 | default: | |
422 | l3_debug(st, "facility default break tag=0x%02x", cp_tag); | |
423 | break; | |
1da177e4 LT |
424 | } |
425 | } | |
426 | ||
427 | static void | |
428 | l3ni1_message(struct l3_process *pc, u_char mt) | |
429 | { | |
430 | struct sk_buff *skb; | |
431 | u_char *p; | |
432 | ||
433 | if (!(skb = l3_alloc_skb(4))) | |
434 | return; | |
435 | p = skb_put(skb, 4); | |
436 | MsgHead(p, pc->callref, mt); | |
437 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
438 | } | |
439 | ||
440 | static void | |
441 | l3ni1_message_plus_chid(struct l3_process *pc, u_char mt) | |
442 | /* sends an l3 messages plus channel id - added GE 05/09/00 */ | |
443 | { | |
444 | struct sk_buff *skb; | |
445 | u_char tmp[16]; | |
446 | u_char *p = tmp; | |
447 | u_char chid; | |
448 | ||
449 | chid = (u_char)(pc->para.bchannel & 0x03) | 0x88; | |
450 | MsgHead(p, pc->callref, mt); | |
451 | *p++ = IE_CHANNEL_ID; | |
452 | *p++ = 0x01; | |
453 | *p++ = chid; | |
454 | ||
455 | if (!(skb = l3_alloc_skb(7))) | |
456 | return; | |
457 | memcpy(skb_put(skb, 7), tmp, 7); | |
458 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
459 | } | |
460 | ||
461 | static void | |
462 | l3ni1_message_cause(struct l3_process *pc, u_char mt, u_char cause) | |
463 | { | |
464 | struct sk_buff *skb; | |
465 | u_char tmp[16]; | |
466 | u_char *p = tmp; | |
467 | int l; | |
468 | ||
469 | MsgHead(p, pc->callref, mt); | |
470 | *p++ = IE_CAUSE; | |
471 | *p++ = 0x2; | |
472 | *p++ = 0x80; | |
473 | *p++ = cause | 0x80; | |
474 | ||
475 | l = p - tmp; | |
476 | if (!(skb = l3_alloc_skb(l))) | |
477 | return; | |
478 | memcpy(skb_put(skb, l), tmp, l); | |
479 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
480 | } | |
481 | ||
482 | static void | |
483 | l3ni1_status_send(struct l3_process *pc, u_char pr, void *arg) | |
484 | { | |
485 | u_char tmp[16]; | |
486 | u_char *p = tmp; | |
487 | int l; | |
488 | struct sk_buff *skb; | |
489 | ||
490 | MsgHead(p, pc->callref, MT_STATUS); | |
491 | ||
492 | *p++ = IE_CAUSE; | |
493 | *p++ = 0x2; | |
494 | *p++ = 0x80; | |
495 | *p++ = pc->para.cause | 0x80; | |
496 | ||
497 | *p++ = IE_CALL_STATE; | |
498 | *p++ = 0x1; | |
499 | *p++ = pc->state & 0x3f; | |
500 | ||
501 | l = p - tmp; | |
502 | if (!(skb = l3_alloc_skb(l))) | |
503 | return; | |
504 | memcpy(skb_put(skb, l), tmp, l); | |
505 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
506 | } | |
507 | ||
508 | static void | |
509 | l3ni1_msg_without_setup(struct l3_process *pc, u_char pr, void *arg) | |
510 | { | |
511 | /* This routine is called if here was no SETUP made (checks in ni1up and in | |
512 | * l3ni1_setup) and a RELEASE_COMPLETE have to be sent with an error code | |
513 | * MT_STATUS_ENQUIRE in the NULL state is handled too | |
514 | */ | |
515 | u_char tmp[16]; | |
516 | u_char *p = tmp; | |
517 | int l; | |
518 | struct sk_buff *skb; | |
519 | ||
520 | switch (pc->para.cause) { | |
475be4d8 JP |
521 | case 81: /* invalid callreference */ |
522 | case 88: /* incomp destination */ | |
523 | case 96: /* mandory IE missing */ | |
524 | case 100: /* invalid IE contents */ | |
525 | case 101: /* incompatible Callstate */ | |
526 | MsgHead(p, pc->callref, MT_RELEASE_COMPLETE); | |
527 | *p++ = IE_CAUSE; | |
528 | *p++ = 0x2; | |
529 | *p++ = 0x80; | |
530 | *p++ = pc->para.cause | 0x80; | |
531 | break; | |
532 | default: | |
533 | printk(KERN_ERR "HiSax l3ni1_msg_without_setup wrong cause %d\n", | |
534 | pc->para.cause); | |
535 | return; | |
1da177e4 LT |
536 | } |
537 | l = p - tmp; | |
538 | if (!(skb = l3_alloc_skb(l))) | |
539 | return; | |
540 | memcpy(skb_put(skb, l), tmp, l); | |
541 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
542 | ni1_release_l3_process(pc); | |
543 | } | |
544 | ||
545 | static int ie_ALERTING[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1, | |
475be4d8 JP |
546 | IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, IE_HLC, |
547 | IE_USER_USER, -1}; | |
1da177e4 | 548 | static int ie_CALL_PROCEEDING[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1, |
475be4d8 JP |
549 | IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_HLC, -1}; |
550 | static int ie_CONNECT[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1, | |
551 | IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_DATE, IE_SIGNAL, | |
552 | IE_CONNECT_PN, IE_CONNECT_SUB, IE_LLC, IE_HLC, IE_USER_USER, -1}; | |
1da177e4 LT |
553 | static int ie_CONNECT_ACKNOWLEDGE[] = {IE_CHANNEL_ID, IE_DISPLAY, IE_SIGNAL, -1}; |
554 | static int ie_DISCONNECT[] = {IE_CAUSE | IE_MANDATORY, IE_FACILITY, | |
475be4d8 | 555 | IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, IE_USER_USER, -1}; |
1da177e4 | 556 | static int ie_INFORMATION[] = {IE_COMPLETE, IE_DISPLAY, IE_KEYPAD, IE_SIGNAL, |
475be4d8 | 557 | IE_CALLED_PN, -1}; |
1da177e4 LT |
558 | static int ie_NOTIFY[] = {IE_BEARER, IE_NOTIFY | IE_MANDATORY, IE_DISPLAY, -1}; |
559 | static int ie_PROGRESS[] = {IE_BEARER, IE_CAUSE, IE_FACILITY, IE_PROGRESS | | |
475be4d8 | 560 | IE_MANDATORY, IE_DISPLAY, IE_HLC, IE_USER_USER, -1}; |
1da177e4 | 561 | static int ie_RELEASE[] = {IE_CAUSE | IE_MANDATORY_1, IE_FACILITY, IE_DISPLAY, |
475be4d8 JP |
562 | IE_SIGNAL, IE_USER_USER, -1}; |
563 | /* a RELEASE_COMPLETE with errors don't require special actions | |
564 | static int ie_RELEASE_COMPLETE[] = {IE_CAUSE | IE_MANDATORY_1, IE_DISPLAY, IE_SIGNAL, IE_USER_USER, -1}; | |
1da177e4 | 565 | */ |
475be4d8 JP |
566 | static int ie_RESUME_ACKNOWLEDGE[] = {IE_CHANNEL_ID | IE_MANDATORY, IE_FACILITY, |
567 | IE_DISPLAY, -1}; | |
1da177e4 LT |
568 | static int ie_RESUME_REJECT[] = {IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1}; |
569 | static int ie_SETUP[] = {IE_COMPLETE, IE_BEARER | IE_MANDATORY, | |
475be4d8 JP |
570 | IE_CHANNEL_ID | IE_MANDATORY, IE_FACILITY, IE_PROGRESS, |
571 | IE_NET_FAC, IE_DISPLAY, IE_KEYPAD, IE_SIGNAL, IE_CALLING_PN, | |
572 | IE_CALLING_SUB, IE_CALLED_PN, IE_CALLED_SUB, IE_REDIR_NR, | |
573 | IE_LLC, IE_HLC, IE_USER_USER, -1}; | |
1da177e4 | 574 | static int ie_SETUP_ACKNOWLEDGE[] = {IE_CHANNEL_ID | IE_MANDATORY, IE_FACILITY, |
475be4d8 | 575 | IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, -1}; |
1da177e4 | 576 | static int ie_STATUS[] = {IE_CAUSE | IE_MANDATORY, IE_CALL_STATE | |
475be4d8 | 577 | IE_MANDATORY, IE_DISPLAY, -1}; |
1da177e4 LT |
578 | static int ie_STATUS_ENQUIRY[] = {IE_DISPLAY, -1}; |
579 | static int ie_SUSPEND_ACKNOWLEDGE[] = {IE_DISPLAY, IE_FACILITY, -1}; | |
580 | static int ie_SUSPEND_REJECT[] = {IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1}; | |
475be4d8 | 581 | /* not used |
1da177e4 LT |
582 | * static int ie_CONGESTION_CONTROL[] = {IE_CONGESTION | IE_MANDATORY, |
583 | * IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1}; | |
584 | * static int ie_USER_INFORMATION[] = {IE_MORE_DATA, IE_USER_USER | IE_MANDATORY, -1}; | |
585 | * static int ie_RESTART[] = {IE_CHANNEL_ID, IE_DISPLAY, IE_RESTART_IND | | |
586 | * IE_MANDATORY, -1}; | |
587 | */ | |
588 | static int ie_FACILITY[] = {IE_FACILITY | IE_MANDATORY, IE_DISPLAY, -1}; | |
475be4d8 JP |
589 | static int comp_required[] = {1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, -1}; |
590 | static int l3_valid_states[] = {0, 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 15, 17, 19, 25, -1}; | |
1da177e4 LT |
591 | |
592 | struct ie_len { | |
593 | int ie; | |
594 | int len; | |
595 | }; | |
596 | ||
597 | static | |
598 | struct ie_len max_ie_len[] = { | |
599 | {IE_SEGMENT, 4}, | |
600 | {IE_BEARER, 12}, | |
601 | {IE_CAUSE, 32}, | |
602 | {IE_CALL_ID, 10}, | |
603 | {IE_CALL_STATE, 3}, | |
604 | {IE_CHANNEL_ID, 34}, | |
605 | {IE_FACILITY, 255}, | |
606 | {IE_PROGRESS, 4}, | |
607 | {IE_NET_FAC, 255}, | |
608 | {IE_NOTIFY, 3}, | |
609 | {IE_DISPLAY, 82}, | |
610 | {IE_DATE, 8}, | |
611 | {IE_KEYPAD, 34}, | |
612 | {IE_SIGNAL, 3}, | |
613 | {IE_INFORATE, 6}, | |
614 | {IE_E2E_TDELAY, 11}, | |
615 | {IE_TDELAY_SEL, 5}, | |
616 | {IE_PACK_BINPARA, 3}, | |
617 | {IE_PACK_WINSIZE, 4}, | |
618 | {IE_PACK_SIZE, 4}, | |
619 | {IE_CUG, 7}, | |
620 | {IE_REV_CHARGE, 3}, | |
621 | {IE_CALLING_PN, 24}, | |
622 | {IE_CALLING_SUB, 23}, | |
623 | {IE_CALLED_PN, 24}, | |
624 | {IE_CALLED_SUB, 23}, | |
625 | {IE_REDIR_NR, 255}, | |
626 | {IE_TRANS_SEL, 255}, | |
627 | {IE_RESTART_IND, 3}, | |
628 | {IE_LLC, 18}, | |
629 | {IE_HLC, 5}, | |
630 | {IE_USER_USER, 131}, | |
475be4d8 | 631 | {-1, 0}, |
1da177e4 LT |
632 | }; |
633 | ||
634 | static int | |
635 | getmax_ie_len(u_char ie) { | |
636 | int i = 0; | |
637 | while (max_ie_len[i].ie != -1) { | |
638 | if (max_ie_len[i].ie == ie) | |
475be4d8 | 639 | return (max_ie_len[i].len); |
1da177e4 LT |
640 | i++; |
641 | } | |
475be4d8 | 642 | return (255); |
1da177e4 LT |
643 | } |
644 | ||
645 | static int | |
646 | ie_in_set(struct l3_process *pc, u_char ie, int *checklist) { | |
647 | int ret = 1; | |
648 | ||
649 | while (*checklist != -1) { | |
650 | if ((*checklist & 0xff) == ie) { | |
651 | if (ie & 0x80) | |
475be4d8 | 652 | return (-ret); |
1da177e4 | 653 | else |
475be4d8 | 654 | return (ret); |
1da177e4 LT |
655 | } |
656 | ret++; | |
657 | checklist++; | |
658 | } | |
475be4d8 | 659 | return (0); |
1da177e4 LT |
660 | } |
661 | ||
662 | static int | |
663 | check_infoelements(struct l3_process *pc, struct sk_buff *skb, int *checklist) | |
664 | { | |
665 | int *cl = checklist; | |
666 | u_char mt; | |
667 | u_char *p, ie; | |
668 | int l, newpos, oldpos; | |
669 | int err_seq = 0, err_len = 0, err_compr = 0, err_ureg = 0; | |
670 | u_char codeset = 0; | |
671 | u_char old_codeset = 0; | |
672 | u_char codelock = 1; | |
475be4d8 | 673 | |
1da177e4 LT |
674 | p = skb->data; |
675 | /* skip cr */ | |
676 | p++; | |
677 | l = (*p++) & 0xf; | |
678 | p += l; | |
679 | mt = *p++; | |
680 | oldpos = 0; | |
681 | while ((p - skb->data) < skb->len) { | |
682 | if ((*p & 0xf0) == 0x90) { /* shift codeset */ | |
683 | old_codeset = codeset; | |
684 | codeset = *p & 7; | |
685 | if (*p & 0x08) | |
686 | codelock = 0; | |
687 | else | |
688 | codelock = 1; | |
689 | if (pc->debug & L3_DEB_CHECK) | |
690 | l3_debug(pc->st, "check IE shift%scodeset %d->%d", | |
475be4d8 | 691 | codelock ? " locking " : " ", old_codeset, codeset); |
1da177e4 LT |
692 | p++; |
693 | continue; | |
694 | } | |
695 | if (!codeset) { /* only codeset 0 */ | |
696 | if ((newpos = ie_in_set(pc, *p, cl))) { | |
697 | if (newpos > 0) { | |
698 | if (newpos < oldpos) | |
699 | err_seq++; | |
700 | else | |
701 | oldpos = newpos; | |
702 | } | |
703 | } else { | |
704 | if (ie_in_set(pc, *p, comp_required)) | |
705 | err_compr++; | |
706 | else | |
707 | err_ureg++; | |
708 | } | |
709 | } | |
710 | ie = *p++; | |
711 | if (ie & 0x80) { | |
712 | l = 1; | |
713 | } else { | |
714 | l = *p++; | |
715 | p += l; | |
716 | l += 2; | |
717 | } | |
718 | if (!codeset && (l > getmax_ie_len(ie))) | |
719 | err_len++; | |
720 | if (!codelock) { | |
721 | if (pc->debug & L3_DEB_CHECK) | |
722 | l3_debug(pc->st, "check IE shift back codeset %d->%d", | |
475be4d8 | 723 | codeset, old_codeset); |
1da177e4 LT |
724 | codeset = old_codeset; |
725 | codelock = 1; | |
726 | } | |
727 | } | |
728 | if (err_compr | err_ureg | err_len | err_seq) { | |
729 | if (pc->debug & L3_DEB_CHECK) | |
730 | l3_debug(pc->st, "check IE MT(%x) %d/%d/%d/%d", | |
475be4d8 | 731 | mt, err_compr, err_ureg, err_len, err_seq); |
1da177e4 | 732 | if (err_compr) |
475be4d8 | 733 | return (ERR_IE_COMPREHENSION); |
1da177e4 | 734 | if (err_ureg) |
475be4d8 | 735 | return (ERR_IE_UNRECOGNIZED); |
1da177e4 | 736 | if (err_len) |
475be4d8 | 737 | return (ERR_IE_LENGTH); |
1da177e4 | 738 | if (err_seq) |
475be4d8 JP |
739 | return (ERR_IE_SEQUENCE); |
740 | } | |
741 | return (0); | |
1da177e4 LT |
742 | } |
743 | ||
744 | /* verify if a message type exists and contain no IE error */ | |
745 | static int | |
746 | l3ni1_check_messagetype_validity(struct l3_process *pc, int mt, void *arg) | |
747 | { | |
748 | switch (mt) { | |
475be4d8 JP |
749 | case MT_ALERTING: |
750 | case MT_CALL_PROCEEDING: | |
751 | case MT_CONNECT: | |
752 | case MT_CONNECT_ACKNOWLEDGE: | |
753 | case MT_DISCONNECT: | |
754 | case MT_INFORMATION: | |
755 | case MT_FACILITY: | |
756 | case MT_NOTIFY: | |
757 | case MT_PROGRESS: | |
758 | case MT_RELEASE: | |
759 | case MT_RELEASE_COMPLETE: | |
760 | case MT_SETUP: | |
761 | case MT_SETUP_ACKNOWLEDGE: | |
762 | case MT_RESUME_ACKNOWLEDGE: | |
763 | case MT_RESUME_REJECT: | |
764 | case MT_SUSPEND_ACKNOWLEDGE: | |
765 | case MT_SUSPEND_REJECT: | |
766 | case MT_USER_INFORMATION: | |
767 | case MT_RESTART: | |
768 | case MT_RESTART_ACKNOWLEDGE: | |
769 | case MT_CONGESTION_CONTROL: | |
770 | case MT_STATUS: | |
771 | case MT_STATUS_ENQUIRY: | |
772 | if (pc->debug & L3_DEB_CHECK) | |
773 | l3_debug(pc->st, "l3ni1_check_messagetype_validity mt(%x) OK", mt); | |
774 | break; | |
775 | case MT_RESUME: /* RESUME only in user->net */ | |
776 | case MT_SUSPEND: /* SUSPEND only in user->net */ | |
777 | default: | |
778 | if (pc->debug & (L3_DEB_CHECK | L3_DEB_WARN)) | |
779 | l3_debug(pc->st, "l3ni1_check_messagetype_validity mt(%x) fail", mt); | |
780 | pc->para.cause = 97; | |
781 | l3ni1_status_send(pc, 0, NULL); | |
782 | return (1); | |
1da177e4 | 783 | } |
475be4d8 | 784 | return (0); |
1da177e4 LT |
785 | } |
786 | ||
787 | static void | |
788 | l3ni1_std_ie_err(struct l3_process *pc, int ret) { | |
789 | ||
790 | if (pc->debug & L3_DEB_CHECK) | |
791 | l3_debug(pc->st, "check_infoelements ret %d", ret); | |
475be4d8 JP |
792 | switch (ret) { |
793 | case 0: | |
794 | break; | |
795 | case ERR_IE_COMPREHENSION: | |
796 | pc->para.cause = 96; | |
797 | l3ni1_status_send(pc, 0, NULL); | |
798 | break; | |
799 | case ERR_IE_UNRECOGNIZED: | |
800 | pc->para.cause = 99; | |
801 | l3ni1_status_send(pc, 0, NULL); | |
802 | break; | |
803 | case ERR_IE_LENGTH: | |
804 | pc->para.cause = 100; | |
805 | l3ni1_status_send(pc, 0, NULL); | |
806 | break; | |
807 | case ERR_IE_SEQUENCE: | |
808 | default: | |
809 | break; | |
1da177e4 LT |
810 | } |
811 | } | |
812 | ||
813 | static int | |
814 | l3ni1_get_channel_id(struct l3_process *pc, struct sk_buff *skb) { | |
815 | u_char *p; | |
816 | ||
817 | p = skb->data; | |
818 | if ((p = findie(p, skb->len, IE_CHANNEL_ID, 0))) { | |
819 | p++; | |
820 | if (*p != 1) { /* len for BRI = 1 */ | |
821 | if (pc->debug & L3_DEB_WARN) | |
822 | l3_debug(pc->st, "wrong chid len %d", *p); | |
823 | return (-2); | |
824 | } | |
825 | p++; | |
826 | if (*p & 0x60) { /* only base rate interface */ | |
827 | if (pc->debug & L3_DEB_WARN) | |
828 | l3_debug(pc->st, "wrong chid %x", *p); | |
829 | return (-3); | |
830 | } | |
475be4d8 | 831 | return (*p & 0x3); |
1da177e4 | 832 | } else |
475be4d8 | 833 | return (-1); |
1da177e4 LT |
834 | } |
835 | ||
836 | static int | |
837 | l3ni1_get_cause(struct l3_process *pc, struct sk_buff *skb) { | |
475be4d8 | 838 | u_char l, i = 0; |
1da177e4 LT |
839 | u_char *p; |
840 | ||
841 | p = skb->data; | |
842 | pc->para.cause = 31; | |
843 | pc->para.loc = 0; | |
844 | if ((p = findie(p, skb->len, IE_CAUSE, 0))) { | |
845 | p++; | |
846 | l = *p++; | |
475be4d8 JP |
847 | if (l > 30) |
848 | return (1); | |
1da177e4 LT |
849 | if (l) { |
850 | pc->para.loc = *p++; | |
851 | l--; | |
852 | } else { | |
475be4d8 | 853 | return (2); |
1da177e4 LT |
854 | } |
855 | if (l && !(pc->para.loc & 0x80)) { | |
856 | l--; | |
857 | p++; /* skip recommendation */ | |
858 | } | |
859 | if (l) { | |
860 | pc->para.cause = *p++; | |
861 | l--; | |
862 | if (!(pc->para.cause & 0x80)) | |
475be4d8 | 863 | return (3); |
1da177e4 | 864 | } else |
475be4d8 JP |
865 | return (4); |
866 | while (l && (i < 6)) { | |
1da177e4 LT |
867 | pc->para.diag[i++] = *p++; |
868 | l--; | |
869 | } | |
870 | } else | |
475be4d8 JP |
871 | return (-1); |
872 | return (0); | |
1da177e4 LT |
873 | } |
874 | ||
875 | static void | |
876 | l3ni1_msg_with_uus(struct l3_process *pc, u_char cmd) | |
877 | { | |
878 | struct sk_buff *skb; | |
475be4d8 | 879 | u_char tmp[16 + 40]; |
1da177e4 LT |
880 | u_char *p = tmp; |
881 | int l; | |
882 | ||
883 | MsgHead(p, pc->callref, cmd); | |
884 | ||
475be4d8 JP |
885 | if (pc->prot.ni1.uus1_data[0]) |
886 | { *p++ = IE_USER_USER; /* UUS info element */ | |
887 | *p++ = strlen(pc->prot.ni1.uus1_data) + 1; | |
888 | *p++ = 0x04; /* IA5 chars */ | |
889 | strcpy(p, pc->prot.ni1.uus1_data); | |
890 | p += strlen(pc->prot.ni1.uus1_data); | |
891 | pc->prot.ni1.uus1_data[0] = '\0'; | |
892 | } | |
1da177e4 LT |
893 | |
894 | l = p - tmp; | |
895 | if (!(skb = l3_alloc_skb(l))) | |
896 | return; | |
897 | memcpy(skb_put(skb, l), tmp, l); | |
898 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
899 | } /* l3ni1_msg_with_uus */ | |
900 | ||
901 | static void | |
902 | l3ni1_release_req(struct l3_process *pc, u_char pr, void *arg) | |
903 | { | |
904 | StopAllL3Timer(pc); | |
905 | newl3state(pc, 19); | |
475be4d8 | 906 | if (!pc->prot.ni1.uus1_data[0]) |
1da177e4 LT |
907 | l3ni1_message(pc, MT_RELEASE); |
908 | else | |
909 | l3ni1_msg_with_uus(pc, MT_RELEASE); | |
910 | L3AddTimer(&pc->timer, T308, CC_T308_1); | |
911 | } | |
912 | ||
913 | static void | |
914 | l3ni1_release_cmpl(struct l3_process *pc, u_char pr, void *arg) | |
915 | { | |
916 | struct sk_buff *skb = arg; | |
917 | int ret; | |
918 | ||
475be4d8 | 919 | if ((ret = l3ni1_get_cause(pc, skb)) > 0) { |
1da177e4 | 920 | if (pc->debug & L3_DEB_WARN) |
475be4d8 | 921 | l3_debug(pc->st, "RELCMPL get_cause ret(%d)", ret); |
1da177e4 LT |
922 | } else if (ret < 0) |
923 | pc->para.cause = NO_CAUSE; | |
924 | StopAllL3Timer(pc); | |
925 | newl3state(pc, 0); | |
926 | pc->st->l3.l3l4(pc->st, CC_RELEASE | CONFIRM, pc); | |
927 | ni1_release_l3_process(pc); | |
928 | } | |
929 | ||
930 | #if EXT_BEARER_CAPS | |
931 | ||
932 | static u_char * | |
475be4d8 | 933 | EncodeASyncParams(u_char *p, u_char si2) |
1da177e4 LT |
934 | { // 7c 06 88 90 21 42 00 bb |
935 | ||
936 | p[0] = 0; | |
937 | p[1] = 0x40; // Intermediate rate: 16 kbit/s jj 2000.02.19 | |
938 | p[2] = 0x80; | |
939 | if (si2 & 32) // 7 data bits | |
940 | ||
941 | p[2] += 16; | |
942 | else // 8 data bits | |
943 | ||
944 | p[2] += 24; | |
945 | ||
946 | if (si2 & 16) // 2 stop bits | |
947 | ||
948 | p[2] += 96; | |
949 | else // 1 stop bit | |
950 | ||
951 | p[2] += 32; | |
952 | ||
953 | if (si2 & 8) // even parity | |
954 | ||
955 | p[2] += 2; | |
956 | else // no parity | |
957 | ||
958 | p[2] += 3; | |
959 | ||
960 | switch (si2 & 0x07) { | |
475be4d8 JP |
961 | case 0: |
962 | p[0] = 66; // 1200 bit/s | |
1da177e4 | 963 | |
475be4d8 JP |
964 | break; |
965 | case 1: | |
966 | p[0] = 88; // 1200/75 bit/s | |
1da177e4 | 967 | |
475be4d8 JP |
968 | break; |
969 | case 2: | |
970 | p[0] = 87; // 75/1200 bit/s | |
1da177e4 | 971 | |
475be4d8 JP |
972 | break; |
973 | case 3: | |
974 | p[0] = 67; // 2400 bit/s | |
1da177e4 | 975 | |
475be4d8 JP |
976 | break; |
977 | case 4: | |
978 | p[0] = 69; // 4800 bit/s | |
1da177e4 | 979 | |
475be4d8 JP |
980 | break; |
981 | case 5: | |
982 | p[0] = 72; // 9600 bit/s | |
1da177e4 | 983 | |
475be4d8 JP |
984 | break; |
985 | case 6: | |
986 | p[0] = 73; // 14400 bit/s | |
1da177e4 | 987 | |
475be4d8 JP |
988 | break; |
989 | case 7: | |
990 | p[0] = 75; // 19200 bit/s | |
1da177e4 | 991 | |
475be4d8 | 992 | break; |
1da177e4 LT |
993 | } |
994 | return p + 3; | |
995 | } | |
996 | ||
997 | static u_char | |
998 | EncodeSyncParams(u_char si2, u_char ai) | |
999 | { | |
1000 | ||
1001 | switch (si2) { | |
475be4d8 JP |
1002 | case 0: |
1003 | return ai + 2; // 1200 bit/s | |
1da177e4 | 1004 | |
475be4d8 JP |
1005 | case 1: |
1006 | return ai + 24; // 1200/75 bit/s | |
1da177e4 | 1007 | |
475be4d8 JP |
1008 | case 2: |
1009 | return ai + 23; // 75/1200 bit/s | |
1da177e4 | 1010 | |
475be4d8 JP |
1011 | case 3: |
1012 | return ai + 3; // 2400 bit/s | |
1da177e4 | 1013 | |
475be4d8 JP |
1014 | case 4: |
1015 | return ai + 5; // 4800 bit/s | |
1da177e4 | 1016 | |
475be4d8 JP |
1017 | case 5: |
1018 | return ai + 8; // 9600 bit/s | |
1da177e4 | 1019 | |
475be4d8 JP |
1020 | case 6: |
1021 | return ai + 9; // 14400 bit/s | |
1da177e4 | 1022 | |
475be4d8 JP |
1023 | case 7: |
1024 | return ai + 11; // 19200 bit/s | |
1da177e4 | 1025 | |
475be4d8 JP |
1026 | case 8: |
1027 | return ai + 14; // 48000 bit/s | |
1da177e4 | 1028 | |
475be4d8 JP |
1029 | case 9: |
1030 | return ai + 15; // 56000 bit/s | |
1da177e4 | 1031 | |
475be4d8 JP |
1032 | case 15: |
1033 | return ai + 40; // negotiate bit/s | |
1da177e4 | 1034 | |
475be4d8 JP |
1035 | default: |
1036 | break; | |
1da177e4 LT |
1037 | } |
1038 | return ai; | |
1039 | } | |
1040 | ||
1041 | ||
1042 | static u_char | |
475be4d8 | 1043 | DecodeASyncParams(u_char si2, u_char *p) |
1da177e4 LT |
1044 | { |
1045 | u_char info; | |
1046 | ||
1047 | switch (p[5]) { | |
475be4d8 | 1048 | case 66: // 1200 bit/s |
1da177e4 | 1049 | |
475be4d8 | 1050 | break; // si2 don't change |
1da177e4 | 1051 | |
475be4d8 | 1052 | case 88: // 1200/75 bit/s |
1da177e4 | 1053 | |
475be4d8 JP |
1054 | si2 += 1; |
1055 | break; | |
1056 | case 87: // 75/1200 bit/s | |
1da177e4 | 1057 | |
475be4d8 JP |
1058 | si2 += 2; |
1059 | break; | |
1060 | case 67: // 2400 bit/s | |
1da177e4 | 1061 | |
475be4d8 JP |
1062 | si2 += 3; |
1063 | break; | |
1064 | case 69: // 4800 bit/s | |
1da177e4 | 1065 | |
475be4d8 JP |
1066 | si2 += 4; |
1067 | break; | |
1068 | case 72: // 9600 bit/s | |
1da177e4 | 1069 | |
475be4d8 JP |
1070 | si2 += 5; |
1071 | break; | |
1072 | case 73: // 14400 bit/s | |
1da177e4 | 1073 | |
475be4d8 JP |
1074 | si2 += 6; |
1075 | break; | |
1076 | case 75: // 19200 bit/s | |
1da177e4 | 1077 | |
475be4d8 JP |
1078 | si2 += 7; |
1079 | break; | |
1da177e4 LT |
1080 | } |
1081 | ||
1082 | info = p[7] & 0x7f; | |
1083 | if ((info & 16) && (!(info & 8))) // 7 data bits | |
1084 | ||
1085 | si2 += 32; // else 8 data bits | |
1086 | ||
1087 | if ((info & 96) == 96) // 2 stop bits | |
1088 | ||
1089 | si2 += 16; // else 1 stop bit | |
1090 | ||
1091 | if ((info & 2) && (!(info & 1))) // even parity | |
1092 | ||
1093 | si2 += 8; // else no parity | |
1094 | ||
1095 | return si2; | |
1096 | } | |
1097 | ||
1098 | ||
1099 | static u_char | |
1100 | DecodeSyncParams(u_char si2, u_char info) | |
1101 | { | |
1102 | info &= 0x7f; | |
1103 | switch (info) { | |
475be4d8 | 1104 | case 40: // bit/s negotiation failed ai := 165 not 175! |
1da177e4 | 1105 | |
475be4d8 JP |
1106 | return si2 + 15; |
1107 | case 15: // 56000 bit/s failed, ai := 0 not 169 ! | |
1da177e4 | 1108 | |
475be4d8 JP |
1109 | return si2 + 9; |
1110 | case 14: // 48000 bit/s | |
1da177e4 | 1111 | |
475be4d8 JP |
1112 | return si2 + 8; |
1113 | case 11: // 19200 bit/s | |
1da177e4 | 1114 | |
475be4d8 JP |
1115 | return si2 + 7; |
1116 | case 9: // 14400 bit/s | |
1da177e4 | 1117 | |
475be4d8 JP |
1118 | return si2 + 6; |
1119 | case 8: // 9600 bit/s | |
1da177e4 | 1120 | |
475be4d8 JP |
1121 | return si2 + 5; |
1122 | case 5: // 4800 bit/s | |
1da177e4 | 1123 | |
475be4d8 JP |
1124 | return si2 + 4; |
1125 | case 3: // 2400 bit/s | |
1da177e4 | 1126 | |
475be4d8 JP |
1127 | return si2 + 3; |
1128 | case 23: // 75/1200 bit/s | |
1da177e4 | 1129 | |
475be4d8 JP |
1130 | return si2 + 2; |
1131 | case 24: // 1200/75 bit/s | |
1da177e4 | 1132 | |
475be4d8 JP |
1133 | return si2 + 1; |
1134 | default: // 1200 bit/s | |
1da177e4 | 1135 | |
475be4d8 | 1136 | return si2; |
1da177e4 LT |
1137 | } |
1138 | } | |
1139 | ||
1140 | static u_char | |
1141 | DecodeSI2(struct sk_buff *skb) | |
1142 | { | |
1143 | u_char *p; //, *pend=skb->data + skb->len; | |
1144 | ||
1145 | if ((p = findie(skb->data, skb->len, 0x7c, 0))) { | |
1146 | switch (p[4] & 0x0f) { | |
475be4d8 JP |
1147 | case 0x01: |
1148 | if (p[1] == 0x04) // sync. Bitratenadaption | |
1da177e4 | 1149 | |
475be4d8 | 1150 | return DecodeSyncParams(160, p[5]); // V.110/X.30 |
1da177e4 | 1151 | |
475be4d8 | 1152 | else if (p[1] == 0x06) // async. Bitratenadaption |
1da177e4 | 1153 | |
475be4d8 | 1154 | return DecodeASyncParams(192, p); // V.110/X.30 |
1da177e4 | 1155 | |
475be4d8 JP |
1156 | break; |
1157 | case 0x08: // if (p[5] == 0x02) // sync. Bitratenadaption | |
1158 | if (p[1] > 3) | |
1159 | return DecodeSyncParams(176, p[5]); // V.120 | |
1160 | break; | |
1da177e4 LT |
1161 | } |
1162 | } | |
1163 | return 0; | |
1164 | } | |
1165 | ||
1166 | #endif | |
1167 | ||
1168 | ||
1169 | static void | |
1170 | l3ni1_setup_req(struct l3_process *pc, u_char pr, | |
475be4d8 | 1171 | void *arg) |
1da177e4 LT |
1172 | { |
1173 | struct sk_buff *skb; | |
1174 | u_char tmp[128]; | |
1175 | u_char *p = tmp; | |
1176 | ||
1177 | u_char *teln; | |
1178 | u_char *sub; | |
1179 | u_char *sp; | |
1180 | int l; | |
1181 | ||
1182 | MsgHead(p, pc->callref, MT_SETUP); | |
1183 | ||
1184 | teln = pc->para.setup.phone; | |
1185 | ||
1186 | *p++ = 0xa1; /* complete indicator */ | |
1187 | /* | |
1188 | * Set Bearer Capability, Map info from 1TR6-convention to NI1 | |
1189 | */ | |
1190 | switch (pc->para.setup.si1) { | |
1191 | case 1: /* Telephony */ | |
1192 | *p++ = IE_BEARER; | |
1193 | *p++ = 0x3; /* Length */ | |
475be4d8 | 1194 | *p++ = 0x90; /* 3.1khz Audio */ |
1da177e4 LT |
1195 | *p++ = 0x90; /* Circuit-Mode 64kbps */ |
1196 | *p++ = 0xa2; /* u-Law Audio */ | |
1197 | break; | |
1198 | case 5: /* Datatransmission 64k, BTX */ | |
1199 | case 7: /* Datatransmission 64k */ | |
1200 | default: | |
1201 | *p++ = IE_BEARER; | |
1202 | *p++ = 0x2; /* Length */ | |
1203 | *p++ = 0x88; /* Coding Std. CCITT, unrestr. dig. Inform. */ | |
1204 | *p++ = 0x90; /* Circuit-Mode 64kbps */ | |
1205 | break; | |
1206 | } | |
1207 | ||
1208 | sub = NULL; | |
1209 | sp = teln; | |
1210 | while (*sp) { | |
1211 | if ('.' == *sp) { | |
1212 | sub = sp; | |
1213 | *sp = 0; | |
1214 | } else | |
1215 | sp++; | |
1216 | } | |
475be4d8 | 1217 | |
1da177e4 LT |
1218 | *p++ = IE_KEYPAD; |
1219 | *p++ = strlen(teln); | |
1220 | while (*teln) | |
1221 | *p++ = (*teln++) & 0x7F; | |
1222 | ||
1223 | if (sub) | |
1224 | *sub++ = '.'; | |
475be4d8 | 1225 | |
1da177e4 LT |
1226 | #if EXT_BEARER_CAPS |
1227 | if ((pc->para.setup.si2 >= 160) && (pc->para.setup.si2 <= 175)) { // sync. Bitratenadaption, V.110/X.30 | |
1228 | ||
1229 | *p++ = IE_LLC; | |
1230 | *p++ = 0x04; | |
1231 | *p++ = 0x88; | |
1232 | *p++ = 0x90; | |
1233 | *p++ = 0x21; | |
1234 | *p++ = EncodeSyncParams(pc->para.setup.si2 - 160, 0x80); | |
1235 | } else if ((pc->para.setup.si2 >= 176) && (pc->para.setup.si2 <= 191)) { // sync. Bitratenadaption, V.120 | |
1236 | ||
1237 | *p++ = IE_LLC; | |
1238 | *p++ = 0x05; | |
1239 | *p++ = 0x88; | |
1240 | *p++ = 0x90; | |
1241 | *p++ = 0x28; | |
1242 | *p++ = EncodeSyncParams(pc->para.setup.si2 - 176, 0); | |
1243 | *p++ = 0x82; | |
1244 | } else if (pc->para.setup.si2 >= 192) { // async. Bitratenadaption, V.110/X.30 | |
1245 | ||
1246 | *p++ = IE_LLC; | |
1247 | *p++ = 0x06; | |
1248 | *p++ = 0x88; | |
1249 | *p++ = 0x90; | |
1250 | *p++ = 0x21; | |
1251 | p = EncodeASyncParams(p, pc->para.setup.si2 - 192); | |
1252 | } else { | |
475be4d8 | 1253 | switch (pc->para.setup.si1) { |
1da177e4 LT |
1254 | case 1: /* Telephony */ |
1255 | *p++ = IE_LLC; | |
1256 | *p++ = 0x3; /* Length */ | |
1257 | *p++ = 0x90; /* Coding Std. CCITT, 3.1 kHz audio */ | |
1258 | *p++ = 0x90; /* Circuit-Mode 64kbps */ | |
1259 | *p++ = 0xa2; /* u-Law Audio */ | |
1260 | break; | |
1261 | case 5: /* Datatransmission 64k, BTX */ | |
1262 | case 7: /* Datatransmission 64k */ | |
1263 | default: | |
1264 | *p++ = IE_LLC; | |
1265 | *p++ = 0x2; /* Length */ | |
1266 | *p++ = 0x88; /* Coding Std. CCITT, unrestr. dig. Inform. */ | |
1267 | *p++ = 0x90; /* Circuit-Mode 64kbps */ | |
1268 | break; | |
475be4d8 | 1269 | } |
1da177e4 LT |
1270 | } |
1271 | #endif | |
1272 | l = p - tmp; | |
1273 | if (!(skb = l3_alloc_skb(l))) | |
475be4d8 | 1274 | { |
1da177e4 | 1275 | return; |
475be4d8 | 1276 | } |
1da177e4 LT |
1277 | memcpy(skb_put(skb, l), tmp, l); |
1278 | L3DelTimer(&pc->timer); | |
1279 | L3AddTimer(&pc->timer, T303, CC_T303); | |
1280 | newl3state(pc, 1); | |
1281 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
1282 | } | |
1283 | ||
1284 | static void | |
1285 | l3ni1_call_proc(struct l3_process *pc, u_char pr, void *arg) | |
1286 | { | |
1287 | struct sk_buff *skb = arg; | |
1288 | int id, ret; | |
1289 | ||
1290 | if ((id = l3ni1_get_channel_id(pc, skb)) >= 0) { | |
1291 | if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) { | |
1292 | if (pc->debug & L3_DEB_WARN) | |
1293 | l3_debug(pc->st, "setup answer with wrong chid %x", id); | |
1294 | pc->para.cause = 100; | |
1295 | l3ni1_status_send(pc, pr, NULL); | |
1296 | return; | |
1297 | } | |
1298 | pc->para.bchannel = id; | |
1299 | } else if (1 == pc->state) { | |
1300 | if (pc->debug & L3_DEB_WARN) | |
1301 | l3_debug(pc->st, "setup answer wrong chid (ret %d)", id); | |
1302 | if (id == -1) | |
1303 | pc->para.cause = 96; | |
1304 | else | |
1305 | pc->para.cause = 100; | |
1306 | l3ni1_status_send(pc, pr, NULL); | |
1307 | return; | |
1308 | } | |
1309 | /* Now we are on none mandatory IEs */ | |
1310 | ret = check_infoelements(pc, skb, ie_CALL_PROCEEDING); | |
1311 | if (ERR_IE_COMPREHENSION == ret) { | |
1312 | l3ni1_std_ie_err(pc, ret); | |
1313 | return; | |
1314 | } | |
1315 | L3DelTimer(&pc->timer); | |
1316 | newl3state(pc, 3); | |
1317 | L3AddTimer(&pc->timer, T310, CC_T310); | |
1318 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
1319 | l3ni1_std_ie_err(pc, ret); | |
1320 | pc->st->l3.l3l4(pc->st, CC_PROCEEDING | INDICATION, pc); | |
1321 | } | |
1322 | ||
1323 | static void | |
1324 | l3ni1_setup_ack(struct l3_process *pc, u_char pr, void *arg) | |
1325 | { | |
1326 | struct sk_buff *skb = arg; | |
1327 | int id, ret; | |
1328 | ||
1329 | if ((id = l3ni1_get_channel_id(pc, skb)) >= 0) { | |
1330 | if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) { | |
1331 | if (pc->debug & L3_DEB_WARN) | |
1332 | l3_debug(pc->st, "setup answer with wrong chid %x", id); | |
1333 | pc->para.cause = 100; | |
1334 | l3ni1_status_send(pc, pr, NULL); | |
1335 | return; | |
1336 | } | |
1337 | pc->para.bchannel = id; | |
1338 | } else { | |
1339 | if (pc->debug & L3_DEB_WARN) | |
1340 | l3_debug(pc->st, "setup answer wrong chid (ret %d)", id); | |
1341 | if (id == -1) | |
1342 | pc->para.cause = 96; | |
1343 | else | |
1344 | pc->para.cause = 100; | |
1345 | l3ni1_status_send(pc, pr, NULL); | |
1346 | return; | |
1347 | } | |
1348 | /* Now we are on none mandatory IEs */ | |
1349 | ret = check_infoelements(pc, skb, ie_SETUP_ACKNOWLEDGE); | |
1350 | if (ERR_IE_COMPREHENSION == ret) { | |
1351 | l3ni1_std_ie_err(pc, ret); | |
1352 | return; | |
1353 | } | |
1354 | L3DelTimer(&pc->timer); | |
1355 | newl3state(pc, 2); | |
1356 | L3AddTimer(&pc->timer, T304, CC_T304); | |
1357 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
1358 | l3ni1_std_ie_err(pc, ret); | |
1359 | pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc); | |
1360 | } | |
1361 | ||
1362 | static void | |
1363 | l3ni1_disconnect(struct l3_process *pc, u_char pr, void *arg) | |
1364 | { | |
1365 | struct sk_buff *skb = arg; | |
1366 | u_char *p; | |
1367 | int ret; | |
1368 | u_char cause = 0; | |
1369 | ||
1370 | StopAllL3Timer(pc); | |
1371 | if ((ret = l3ni1_get_cause(pc, skb))) { | |
1372 | if (pc->debug & L3_DEB_WARN) | |
1373 | l3_debug(pc->st, "DISC get_cause ret(%d)", ret); | |
1374 | if (ret < 0) | |
1375 | cause = 96; | |
1376 | else if (ret > 0) | |
1377 | cause = 100; | |
475be4d8 | 1378 | } |
1da177e4 LT |
1379 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) |
1380 | l3ni1_parse_facility(pc->st, pc, pc->callref, p); | |
1381 | ret = check_infoelements(pc, skb, ie_DISCONNECT); | |
1382 | if (ERR_IE_COMPREHENSION == ret) | |
1383 | cause = 96; | |
1384 | else if ((!cause) && (ERR_IE_UNRECOGNIZED == ret)) | |
1385 | cause = 99; | |
1386 | ret = pc->state; | |
1387 | newl3state(pc, 12); | |
1388 | if (cause) | |
1389 | newl3state(pc, 19); | |
475be4d8 | 1390 | if (11 != ret) |
1da177e4 | 1391 | pc->st->l3.l3l4(pc->st, CC_DISCONNECT | INDICATION, pc); |
475be4d8 JP |
1392 | else if (!cause) |
1393 | l3ni1_release_req(pc, pr, NULL); | |
1da177e4 LT |
1394 | if (cause) { |
1395 | l3ni1_message_cause(pc, MT_RELEASE, cause); | |
1396 | L3AddTimer(&pc->timer, T308, CC_T308_1); | |
1397 | } | |
1398 | } | |
1399 | ||
1400 | static void | |
1401 | l3ni1_connect(struct l3_process *pc, u_char pr, void *arg) | |
1402 | { | |
1403 | struct sk_buff *skb = arg; | |
1404 | int ret; | |
1405 | ||
1406 | ret = check_infoelements(pc, skb, ie_CONNECT); | |
1407 | if (ERR_IE_COMPREHENSION == ret) { | |
1408 | l3ni1_std_ie_err(pc, ret); | |
1409 | return; | |
1410 | } | |
1411 | L3DelTimer(&pc->timer); /* T310 */ | |
1412 | newl3state(pc, 10); | |
1413 | pc->para.chargeinfo = 0; | |
1414 | /* here should inserted COLP handling KKe */ | |
1415 | if (ret) | |
1416 | l3ni1_std_ie_err(pc, ret); | |
1417 | pc->st->l3.l3l4(pc->st, CC_SETUP | CONFIRM, pc); | |
1418 | } | |
1419 | ||
1420 | static void | |
1421 | l3ni1_alerting(struct l3_process *pc, u_char pr, void *arg) | |
1422 | { | |
1423 | struct sk_buff *skb = arg; | |
1424 | int ret; | |
1425 | ||
1426 | ret = check_infoelements(pc, skb, ie_ALERTING); | |
1427 | if (ERR_IE_COMPREHENSION == ret) { | |
1428 | l3ni1_std_ie_err(pc, ret); | |
1429 | return; | |
1430 | } | |
1431 | L3DelTimer(&pc->timer); /* T304 */ | |
1432 | newl3state(pc, 4); | |
1433 | if (ret) | |
1434 | l3ni1_std_ie_err(pc, ret); | |
1435 | pc->st->l3.l3l4(pc->st, CC_ALERTING | INDICATION, pc); | |
1436 | } | |
1437 | ||
1438 | static void | |
1439 | l3ni1_setup(struct l3_process *pc, u_char pr, void *arg) | |
1440 | { | |
1441 | u_char *p; | |
1442 | int bcfound = 0; | |
1443 | char tmp[80]; | |
1444 | struct sk_buff *skb = arg; | |
1445 | int id; | |
1446 | int err = 0; | |
1447 | ||
1448 | /* | |
1449 | * Bearer Capabilities | |
1450 | */ | |
1451 | p = skb->data; | |
25985edc | 1452 | /* only the first occurrence 'll be detected ! */ |
1da177e4 LT |
1453 | if ((p = findie(p, skb->len, 0x04, 0))) { |
1454 | if ((p[1] < 2) || (p[1] > 11)) | |
1455 | err = 1; | |
1456 | else { | |
1457 | pc->para.setup.si2 = 0; | |
1458 | switch (p[2] & 0x7f) { | |
475be4d8 JP |
1459 | case 0x00: /* Speech */ |
1460 | case 0x10: /* 3.1 Khz audio */ | |
1461 | pc->para.setup.si1 = 1; | |
1462 | break; | |
1463 | case 0x08: /* Unrestricted digital information */ | |
1464 | pc->para.setup.si1 = 7; | |
1da177e4 LT |
1465 | /* JIM, 05.11.97 I wanna set service indicator 2 */ |
1466 | #if EXT_BEARER_CAPS | |
475be4d8 | 1467 | pc->para.setup.si2 = DecodeSI2(skb); |
1da177e4 | 1468 | #endif |
475be4d8 JP |
1469 | break; |
1470 | case 0x09: /* Restricted digital information */ | |
1471 | pc->para.setup.si1 = 2; | |
1472 | break; | |
1473 | case 0x11: | |
1474 | /* Unrestr. digital information with | |
1475 | * tones/announcements ( or 7 kHz audio | |
1476 | */ | |
1477 | pc->para.setup.si1 = 3; | |
1478 | break; | |
1479 | case 0x18: /* Video */ | |
1480 | pc->para.setup.si1 = 4; | |
1481 | break; | |
1482 | default: | |
1483 | err = 2; | |
1484 | break; | |
1da177e4 LT |
1485 | } |
1486 | switch (p[3] & 0x7f) { | |
475be4d8 JP |
1487 | case 0x40: /* packed mode */ |
1488 | pc->para.setup.si1 = 8; | |
1489 | break; | |
1490 | case 0x10: /* 64 kbit */ | |
1491 | case 0x11: /* 2*64 kbit */ | |
1492 | case 0x13: /* 384 kbit */ | |
1493 | case 0x15: /* 1536 kbit */ | |
1494 | case 0x17: /* 1920 kbit */ | |
1495 | pc->para.moderate = p[3] & 0x7f; | |
1496 | break; | |
1497 | default: | |
1498 | err = 3; | |
1499 | break; | |
1da177e4 LT |
1500 | } |
1501 | } | |
1502 | if (pc->debug & L3_DEB_SI) | |
1503 | l3_debug(pc->st, "SI=%d, AI=%d", | |
475be4d8 | 1504 | pc->para.setup.si1, pc->para.setup.si2); |
1da177e4 LT |
1505 | if (err) { |
1506 | if (pc->debug & L3_DEB_WARN) | |
1507 | l3_debug(pc->st, "setup with wrong bearer(l=%d:%x,%x)", | |
475be4d8 | 1508 | p[1], p[2], p[3]); |
1da177e4 LT |
1509 | pc->para.cause = 100; |
1510 | l3ni1_msg_without_setup(pc, pr, NULL); | |
1511 | return; | |
1512 | } | |
1513 | } else { | |
1514 | if (pc->debug & L3_DEB_WARN) | |
1515 | l3_debug(pc->st, "setup without bearer capabilities"); | |
1516 | /* ETS 300-104 1.3.3 */ | |
1517 | pc->para.cause = 96; | |
1518 | l3ni1_msg_without_setup(pc, pr, NULL); | |
1519 | return; | |
1520 | } | |
1521 | /* | |
1522 | * Channel Identification | |
1523 | */ | |
1524 | if ((id = l3ni1_get_channel_id(pc, skb)) >= 0) { | |
1525 | if ((pc->para.bchannel = id)) { | |
1526 | if ((3 == id) && (0x10 == pc->para.moderate)) { | |
1527 | if (pc->debug & L3_DEB_WARN) | |
1528 | l3_debug(pc->st, "setup with wrong chid %x", | |
475be4d8 | 1529 | id); |
1da177e4 LT |
1530 | pc->para.cause = 100; |
1531 | l3ni1_msg_without_setup(pc, pr, NULL); | |
1532 | return; | |
1533 | } | |
1534 | bcfound++; | |
475be4d8 JP |
1535 | } else |
1536 | { if (pc->debug & L3_DEB_WARN) | |
1537 | l3_debug(pc->st, "setup without bchannel, call waiting"); | |
1538 | bcfound++; | |
1539 | } | |
1da177e4 LT |
1540 | } else { |
1541 | if (pc->debug & L3_DEB_WARN) | |
1542 | l3_debug(pc->st, "setup with wrong chid ret %d", id); | |
1543 | if (id == -1) | |
1544 | pc->para.cause = 96; | |
1545 | else | |
1546 | pc->para.cause = 100; | |
1547 | l3ni1_msg_without_setup(pc, pr, NULL); | |
1548 | return; | |
1549 | } | |
1550 | /* Now we are on none mandatory IEs */ | |
1551 | err = check_infoelements(pc, skb, ie_SETUP); | |
1552 | if (ERR_IE_COMPREHENSION == err) { | |
1553 | pc->para.cause = 96; | |
1554 | l3ni1_msg_without_setup(pc, pr, NULL); | |
1555 | return; | |
1556 | } | |
1557 | p = skb->data; | |
1558 | if ((p = findie(p, skb->len, 0x70, 0))) | |
1559 | iecpy(pc->para.setup.eazmsn, p, 1); | |
1560 | else | |
1561 | pc->para.setup.eazmsn[0] = 0; | |
1562 | ||
1563 | p = skb->data; | |
1564 | if ((p = findie(p, skb->len, 0x71, 0))) { | |
1565 | /* Called party subaddress */ | |
1566 | if ((p[1] >= 2) && (p[2] == 0x80) && (p[3] == 0x50)) { | |
1567 | tmp[0] = '.'; | |
1568 | iecpy(&tmp[1], p, 2); | |
1569 | strcat(pc->para.setup.eazmsn, tmp); | |
1570 | } else if (pc->debug & L3_DEB_WARN) | |
1571 | l3_debug(pc->st, "wrong called subaddress"); | |
1572 | } | |
1573 | p = skb->data; | |
1574 | if ((p = findie(p, skb->len, 0x6c, 0))) { | |
1575 | pc->para.setup.plan = p[2]; | |
1576 | if (p[2] & 0x80) { | |
1577 | iecpy(pc->para.setup.phone, p, 1); | |
1578 | pc->para.setup.screen = 0; | |
1579 | } else { | |
1580 | iecpy(pc->para.setup.phone, p, 2); | |
1581 | pc->para.setup.screen = p[3]; | |
1582 | } | |
1583 | } else { | |
1584 | pc->para.setup.phone[0] = 0; | |
1585 | pc->para.setup.plan = 0; | |
1586 | pc->para.setup.screen = 0; | |
1587 | } | |
1588 | p = skb->data; | |
1589 | if ((p = findie(p, skb->len, 0x6d, 0))) { | |
1590 | /* Calling party subaddress */ | |
1591 | if ((p[1] >= 2) && (p[2] == 0x80) && (p[3] == 0x50)) { | |
1592 | tmp[0] = '.'; | |
1593 | iecpy(&tmp[1], p, 2); | |
1594 | strcat(pc->para.setup.phone, tmp); | |
1595 | } else if (pc->debug & L3_DEB_WARN) | |
1596 | l3_debug(pc->st, "wrong calling subaddress"); | |
1597 | } | |
1598 | newl3state(pc, 6); | |
1599 | if (err) /* STATUS for none mandatory IE errors after actions are taken */ | |
1600 | l3ni1_std_ie_err(pc, err); | |
1601 | pc->st->l3.l3l4(pc->st, CC_SETUP | INDICATION, pc); | |
1602 | } | |
1603 | ||
1604 | static void | |
1605 | l3ni1_reset(struct l3_process *pc, u_char pr, void *arg) | |
1606 | { | |
1607 | ni1_release_l3_process(pc); | |
1608 | } | |
1609 | ||
1610 | static void | |
1611 | l3ni1_disconnect_req(struct l3_process *pc, u_char pr, void *arg) | |
1612 | { | |
1613 | struct sk_buff *skb; | |
475be4d8 | 1614 | u_char tmp[16 + 40]; |
1da177e4 LT |
1615 | u_char *p = tmp; |
1616 | int l; | |
1617 | u_char cause = 16; | |
1618 | ||
1619 | if (pc->para.cause != NO_CAUSE) | |
1620 | cause = pc->para.cause; | |
1621 | ||
1622 | StopAllL3Timer(pc); | |
1623 | ||
1624 | MsgHead(p, pc->callref, MT_DISCONNECT); | |
1625 | ||
1626 | *p++ = IE_CAUSE; | |
1627 | *p++ = 0x2; | |
1628 | *p++ = 0x80; | |
1629 | *p++ = cause | 0x80; | |
1630 | ||
475be4d8 JP |
1631 | if (pc->prot.ni1.uus1_data[0]) |
1632 | { *p++ = IE_USER_USER; /* UUS info element */ | |
1633 | *p++ = strlen(pc->prot.ni1.uus1_data) + 1; | |
1634 | *p++ = 0x04; /* IA5 chars */ | |
1635 | strcpy(p, pc->prot.ni1.uus1_data); | |
1636 | p += strlen(pc->prot.ni1.uus1_data); | |
1637 | pc->prot.ni1.uus1_data[0] = '\0'; | |
1638 | } | |
1da177e4 LT |
1639 | |
1640 | l = p - tmp; | |
1641 | if (!(skb = l3_alloc_skb(l))) | |
1642 | return; | |
1643 | memcpy(skb_put(skb, l), tmp, l); | |
1644 | newl3state(pc, 11); | |
1645 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
1646 | L3AddTimer(&pc->timer, T305, CC_T305); | |
1647 | } | |
1648 | ||
1649 | static void | |
1650 | l3ni1_setup_rsp(struct l3_process *pc, u_char pr, | |
475be4d8 JP |
1651 | void *arg) |
1652 | { | |
1653 | if (!pc->para.bchannel) | |
1654 | { if (pc->debug & L3_DEB_WARN) | |
1655 | l3_debug(pc->st, "D-chan connect for waiting call"); | |
1656 | l3ni1_disconnect_req(pc, pr, arg); | |
1657 | return; | |
1658 | } | |
1da177e4 LT |
1659 | newl3state(pc, 8); |
1660 | if (pc->debug & L3_DEB_WARN) | |
1661 | l3_debug(pc->st, "D-chan connect for waiting call"); | |
475be4d8 | 1662 | l3ni1_message_plus_chid(pc, MT_CONNECT); /* GE 05/09/00 */ |
1da177e4 LT |
1663 | L3DelTimer(&pc->timer); |
1664 | L3AddTimer(&pc->timer, T313, CC_T313); | |
1665 | } | |
1666 | ||
1667 | static void | |
1668 | l3ni1_connect_ack(struct l3_process *pc, u_char pr, void *arg) | |
1669 | { | |
1670 | struct sk_buff *skb = arg; | |
1671 | int ret; | |
1672 | ||
1673 | ret = check_infoelements(pc, skb, ie_CONNECT_ACKNOWLEDGE); | |
1674 | if (ERR_IE_COMPREHENSION == ret) { | |
1675 | l3ni1_std_ie_err(pc, ret); | |
1676 | return; | |
1677 | } | |
1678 | newl3state(pc, 10); | |
1679 | L3DelTimer(&pc->timer); | |
1680 | if (ret) | |
1681 | l3ni1_std_ie_err(pc, ret); | |
1682 | pc->st->l3.l3l4(pc->st, CC_SETUP_COMPL | INDICATION, pc); | |
1683 | } | |
1684 | ||
1685 | static void | |
1686 | l3ni1_reject_req(struct l3_process *pc, u_char pr, void *arg) | |
1687 | { | |
1688 | struct sk_buff *skb; | |
1689 | u_char tmp[16]; | |
1690 | u_char *p = tmp; | |
1691 | int l; | |
1692 | u_char cause = 21; | |
1693 | ||
1694 | if (pc->para.cause != NO_CAUSE) | |
1695 | cause = pc->para.cause; | |
1696 | ||
1697 | MsgHead(p, pc->callref, MT_RELEASE_COMPLETE); | |
1698 | ||
1699 | *p++ = IE_CAUSE; | |
1700 | *p++ = 0x2; | |
1701 | *p++ = 0x80; | |
1702 | *p++ = cause | 0x80; | |
1703 | ||
1704 | l = p - tmp; | |
1705 | if (!(skb = l3_alloc_skb(l))) | |
1706 | return; | |
1707 | memcpy(skb_put(skb, l), tmp, l); | |
1708 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
1709 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
1710 | newl3state(pc, 0); | |
1711 | ni1_release_l3_process(pc); | |
1712 | } | |
1713 | ||
1714 | static void | |
1715 | l3ni1_release(struct l3_process *pc, u_char pr, void *arg) | |
1716 | { | |
1717 | struct sk_buff *skb = arg; | |
1718 | u_char *p; | |
475be4d8 | 1719 | int ret, cause = 0; |
1da177e4 LT |
1720 | |
1721 | StopAllL3Timer(pc); | |
475be4d8 | 1722 | if ((ret = l3ni1_get_cause(pc, skb)) > 0) { |
1da177e4 LT |
1723 | if (pc->debug & L3_DEB_WARN) |
1724 | l3_debug(pc->st, "REL get_cause ret(%d)", ret); | |
475be4d8 | 1725 | } else if (ret < 0) |
1da177e4 LT |
1726 | pc->para.cause = NO_CAUSE; |
1727 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) { | |
1728 | l3ni1_parse_facility(pc->st, pc, pc->callref, p); | |
1729 | } | |
475be4d8 | 1730 | if ((ret < 0) && (pc->state != 11)) |
1da177e4 | 1731 | cause = 96; |
475be4d8 | 1732 | else if (ret > 0) |
1da177e4 LT |
1733 | cause = 100; |
1734 | ret = check_infoelements(pc, skb, ie_RELEASE); | |
1735 | if (ERR_IE_COMPREHENSION == ret) | |
1736 | cause = 96; | |
1737 | else if ((ERR_IE_UNRECOGNIZED == ret) && (!cause)) | |
475be4d8 | 1738 | cause = 99; |
1da177e4 LT |
1739 | if (cause) |
1740 | l3ni1_message_cause(pc, MT_RELEASE_COMPLETE, cause); | |
1741 | else | |
1742 | l3ni1_message(pc, MT_RELEASE_COMPLETE); | |
1743 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
1744 | newl3state(pc, 0); | |
1745 | ni1_release_l3_process(pc); | |
1746 | } | |
1747 | ||
1748 | static void | |
1749 | l3ni1_alert_req(struct l3_process *pc, u_char pr, | |
475be4d8 | 1750 | void *arg) |
1da177e4 LT |
1751 | { |
1752 | newl3state(pc, 7); | |
475be4d8 | 1753 | if (!pc->prot.ni1.uus1_data[0]) |
1da177e4 LT |
1754 | l3ni1_message(pc, MT_ALERTING); |
1755 | else | |
475be4d8 | 1756 | l3ni1_msg_with_uus(pc, MT_ALERTING); |
1da177e4 LT |
1757 | } |
1758 | ||
1759 | static void | |
1760 | l3ni1_proceed_req(struct l3_process *pc, u_char pr, | |
475be4d8 | 1761 | void *arg) |
1da177e4 LT |
1762 | { |
1763 | newl3state(pc, 9); | |
1764 | l3ni1_message(pc, MT_CALL_PROCEEDING); | |
475be4d8 | 1765 | pc->st->l3.l3l4(pc->st, CC_PROCEED_SEND | INDICATION, pc); |
1da177e4 LT |
1766 | } |
1767 | ||
1768 | static void | |
1769 | l3ni1_setup_ack_req(struct l3_process *pc, u_char pr, | |
475be4d8 | 1770 | void *arg) |
1da177e4 LT |
1771 | { |
1772 | newl3state(pc, 25); | |
1773 | L3DelTimer(&pc->timer); | |
1774 | L3AddTimer(&pc->timer, T302, CC_T302); | |
1775 | l3ni1_message(pc, MT_SETUP_ACKNOWLEDGE); | |
1776 | } | |
1777 | ||
1778 | /********************************************/ | |
1779 | /* deliver a incoming display message to HL */ | |
1780 | /********************************************/ | |
1781 | static void | |
1782 | l3ni1_deliver_display(struct l3_process *pc, int pr, u_char *infp) | |
1783 | { u_char len; | |
475be4d8 | 1784 | isdn_ctrl ic; |
1da177e4 | 1785 | struct IsdnCardState *cs; |
475be4d8 | 1786 | char *p; |
1da177e4 | 1787 | |
475be4d8 JP |
1788 | if (*infp++ != IE_DISPLAY) return; |
1789 | if ((len = *infp++) > 80) return; /* total length <= 82 */ | |
1da177e4 LT |
1790 | if (!pc->chan) return; |
1791 | ||
475be4d8 JP |
1792 | p = ic.parm.display; |
1793 | while (len--) | |
1794 | *p++ = *infp++; | |
1da177e4 LT |
1795 | *p = '\0'; |
1796 | ic.command = ISDN_STAT_DISPLAY; | |
1797 | cs = pc->st->l1.hardware; | |
1798 | ic.driver = cs->myid; | |
475be4d8 | 1799 | ic.arg = pc->chan->chan; |
1da177e4 LT |
1800 | cs->iif.statcallb(&ic); |
1801 | } /* l3ni1_deliver_display */ | |
1802 | ||
1803 | ||
1804 | static void | |
1805 | l3ni1_progress(struct l3_process *pc, u_char pr, void *arg) | |
1806 | { | |
1807 | struct sk_buff *skb = arg; | |
1808 | int err = 0; | |
1809 | u_char *p; | |
1810 | ||
1811 | if ((p = findie(skb->data, skb->len, IE_PROGRESS, 0))) { | |
1812 | if (p[1] != 2) { | |
1813 | err = 1; | |
1814 | pc->para.cause = 100; | |
1815 | } else if (!(p[2] & 0x70)) { | |
1816 | switch (p[2]) { | |
475be4d8 JP |
1817 | case 0x80: |
1818 | case 0x81: | |
1819 | case 0x82: | |
1820 | case 0x84: | |
1821 | case 0x85: | |
1822 | case 0x87: | |
1823 | case 0x8a: | |
1824 | switch (p[3]) { | |
1da177e4 LT |
1825 | case 0x81: |
1826 | case 0x82: | |
475be4d8 | 1827 | case 0x83: |
1da177e4 | 1828 | case 0x84: |
475be4d8 | 1829 | case 0x88: |
1da177e4 LT |
1830 | break; |
1831 | default: | |
475be4d8 | 1832 | err = 2; |
1da177e4 LT |
1833 | pc->para.cause = 100; |
1834 | break; | |
475be4d8 JP |
1835 | } |
1836 | break; | |
1837 | default: | |
1838 | err = 3; | |
1839 | pc->para.cause = 100; | |
1840 | break; | |
1da177e4 LT |
1841 | } |
1842 | } | |
1843 | } else { | |
1844 | pc->para.cause = 96; | |
1845 | err = 4; | |
1846 | } | |
475be4d8 | 1847 | if (err) { |
1da177e4 LT |
1848 | if (pc->debug & L3_DEB_WARN) |
1849 | l3_debug(pc->st, "progress error %d", err); | |
1850 | l3ni1_status_send(pc, pr, NULL); | |
1851 | return; | |
1852 | } | |
1853 | /* Now we are on none mandatory IEs */ | |
1854 | err = check_infoelements(pc, skb, ie_PROGRESS); | |
1855 | if (err) | |
1856 | l3ni1_std_ie_err(pc, err); | |
1857 | if (ERR_IE_COMPREHENSION != err) | |
1858 | pc->st->l3.l3l4(pc->st, CC_PROGRESS | INDICATION, pc); | |
1859 | } | |
1860 | ||
1861 | static void | |
1862 | l3ni1_notify(struct l3_process *pc, u_char pr, void *arg) | |
1863 | { | |
1864 | struct sk_buff *skb = arg; | |
1865 | int err = 0; | |
1866 | u_char *p; | |
1867 | ||
1868 | if ((p = findie(skb->data, skb->len, IE_NOTIFY, 0))) { | |
1869 | if (p[1] != 1) { | |
1870 | err = 1; | |
1871 | pc->para.cause = 100; | |
1872 | } else { | |
1873 | switch (p[2]) { | |
475be4d8 JP |
1874 | case 0x80: |
1875 | case 0x81: | |
1876 | case 0x82: | |
1877 | break; | |
1878 | default: | |
1879 | pc->para.cause = 100; | |
1880 | err = 2; | |
1881 | break; | |
1da177e4 LT |
1882 | } |
1883 | } | |
1884 | } else { | |
1885 | pc->para.cause = 96; | |
1886 | err = 3; | |
1887 | } | |
475be4d8 | 1888 | if (err) { |
1da177e4 LT |
1889 | if (pc->debug & L3_DEB_WARN) |
1890 | l3_debug(pc->st, "notify error %d", err); | |
1891 | l3ni1_status_send(pc, pr, NULL); | |
1892 | return; | |
1893 | } | |
1894 | /* Now we are on none mandatory IEs */ | |
1895 | err = check_infoelements(pc, skb, ie_NOTIFY); | |
1896 | if (err) | |
1897 | l3ni1_std_ie_err(pc, err); | |
1898 | if (ERR_IE_COMPREHENSION != err) | |
1899 | pc->st->l3.l3l4(pc->st, CC_NOTIFY | INDICATION, pc); | |
1900 | } | |
1901 | ||
1902 | static void | |
1903 | l3ni1_status_enq(struct l3_process *pc, u_char pr, void *arg) | |
1904 | { | |
1905 | int ret; | |
1906 | struct sk_buff *skb = arg; | |
1907 | ||
1908 | ret = check_infoelements(pc, skb, ie_STATUS_ENQUIRY); | |
1909 | l3ni1_std_ie_err(pc, ret); | |
1910 | pc->para.cause = 30; /* response to STATUS_ENQUIRY */ | |
475be4d8 | 1911 | l3ni1_status_send(pc, pr, NULL); |
1da177e4 LT |
1912 | } |
1913 | ||
1914 | static void | |
1915 | l3ni1_information(struct l3_process *pc, u_char pr, void *arg) | |
1916 | { | |
1917 | int ret; | |
1918 | struct sk_buff *skb = arg; | |
1919 | u_char *p; | |
1920 | char tmp[32]; | |
1921 | ||
1922 | ret = check_infoelements(pc, skb, ie_INFORMATION); | |
1923 | if (ret) | |
1924 | l3ni1_std_ie_err(pc, ret); | |
1925 | if (pc->state == 25) { /* overlap receiving */ | |
1926 | L3DelTimer(&pc->timer); | |
1927 | p = skb->data; | |
1928 | if ((p = findie(p, skb->len, 0x70, 0))) { | |
1929 | iecpy(tmp, p, 1); | |
1930 | strcat(pc->para.setup.eazmsn, tmp); | |
1931 | pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc); | |
1932 | } | |
1933 | L3AddTimer(&pc->timer, T302, CC_T302); | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | /******************************/ | |
1938 | /* handle deflection requests */ | |
1939 | /******************************/ | |
1940 | static void l3ni1_redir_req(struct l3_process *pc, u_char pr, void *arg) | |
1941 | { | |
1942 | struct sk_buff *skb; | |
1943 | u_char tmp[128]; | |
1944 | u_char *p = tmp; | |
475be4d8 JP |
1945 | u_char *subp; |
1946 | u_char len_phone = 0; | |
1947 | u_char len_sub = 0; | |
1948 | int l; | |
1949 | ||
1950 | ||
1951 | strcpy(pc->prot.ni1.uus1_data, pc->chan->setup.eazmsn); /* copy uus element if available */ | |
1952 | if (!pc->chan->setup.phone[0]) | |
1953 | { pc->para.cause = -1; | |
1954 | l3ni1_disconnect_req(pc, pr, arg); /* disconnect immediately */ | |
1955 | return; | |
1956 | } /* only uus */ | |
1957 | ||
1958 | if (pc->prot.ni1.invoke_id) | |
1959 | free_invoke_id(pc->st, pc->prot.ni1.invoke_id); | |
1960 | ||
1961 | if (!(pc->prot.ni1.invoke_id = new_invoke_id(pc->st))) | |
1962 | return; | |
1963 | ||
1964 | MsgHead(p, pc->callref, MT_FACILITY); | |
1965 | ||
1966 | for (subp = pc->chan->setup.phone; (*subp) && (*subp != '.'); subp++) len_phone++; /* len of phone number */ | |
1967 | if (*subp++ == '.') len_sub = strlen(subp) + 2; /* length including info subaddress element */ | |
1da177e4 LT |
1968 | |
1969 | *p++ = 0x1c; /* Facility info element */ | |
475be4d8 JP |
1970 | *p++ = len_phone + len_sub + 2 + 2 + 8 + 3 + 3; /* length of element */ |
1971 | *p++ = 0x91; /* remote operations protocol */ | |
1972 | *p++ = 0xa1; /* invoke component */ | |
1973 | ||
1974 | *p++ = len_phone + len_sub + 2 + 2 + 8 + 3; /* length of data */ | |
1975 | *p++ = 0x02; /* invoke id tag, integer */ | |
1da177e4 | 1976 | *p++ = 0x01; /* length */ |
475be4d8 JP |
1977 | *p++ = pc->prot.ni1.invoke_id; /* invoke id */ |
1978 | *p++ = 0x02; /* operation value tag, integer */ | |
1da177e4 | 1979 | *p++ = 0x01; /* length */ |
475be4d8 JP |
1980 | *p++ = 0x0D; /* Call Deflect */ |
1981 | ||
1982 | *p++ = 0x30; /* sequence phone number */ | |
1983 | *p++ = len_phone + 2 + 2 + 3 + len_sub; /* length */ | |
1984 | ||
1985 | *p++ = 0x30; /* Deflected to UserNumber */ | |
1986 | *p++ = len_phone + 2 + len_sub; /* length */ | |
1987 | *p++ = 0x80; /* NumberDigits */ | |
1da177e4 | 1988 | *p++ = len_phone; /* length */ |
475be4d8 JP |
1989 | for (l = 0; l < len_phone; l++) |
1990 | *p++ = pc->chan->setup.phone[l]; | |
1da177e4 | 1991 | |
475be4d8 JP |
1992 | if (len_sub) |
1993 | { *p++ = 0x04; /* called party subaddress */ | |
1994 | *p++ = len_sub - 2; | |
1995 | while (*subp) *p++ = *subp++; | |
1996 | } | |
1da177e4 | 1997 | |
475be4d8 JP |
1998 | *p++ = 0x01; /* screening identifier */ |
1999 | *p++ = 0x01; | |
2000 | *p++ = pc->chan->setup.screen; | |
1da177e4 LT |
2001 | |
2002 | l = p - tmp; | |
2003 | if (!(skb = l3_alloc_skb(l))) return; | |
2004 | memcpy(skb_put(skb, l), tmp, l); | |
2005 | ||
475be4d8 | 2006 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
1da177e4 LT |
2007 | } /* l3ni1_redir_req */ |
2008 | ||
2009 | /********************************************/ | |
2010 | /* handle deflection request in early state */ | |
2011 | /********************************************/ | |
2012 | static void l3ni1_redir_req_early(struct l3_process *pc, u_char pr, void *arg) | |
2013 | { | |
475be4d8 JP |
2014 | l3ni1_proceed_req(pc, pr, arg); |
2015 | l3ni1_redir_req(pc, pr, arg); | |
1da177e4 LT |
2016 | } /* l3ni1_redir_req_early */ |
2017 | ||
2018 | /***********************************************/ | |
2019 | /* handle special commands for this protocol. */ | |
25985edc | 2020 | /* Examples are call independent services like */ |
1da177e4 LT |
2021 | /* remote operations with dummy callref. */ |
2022 | /***********************************************/ | |
2023 | static int l3ni1_cmd_global(struct PStack *st, isdn_ctrl *ic) | |
2024 | { u_char id; | |
475be4d8 JP |
2025 | u_char temp[265]; |
2026 | u_char *p = temp; | |
2027 | int i, l, proc_len; | |
2028 | struct sk_buff *skb; | |
2029 | struct l3_process *pc = NULL; | |
2030 | ||
2031 | switch (ic->arg) | |
2032 | { case NI1_CMD_INVOKE: | |
2033 | if (ic->parm.ni1_io.datalen < 0) return (-2); /* invalid parameter */ | |
2034 | ||
2035 | for (proc_len = 1, i = ic->parm.ni1_io.proc >> 8; i; i++) | |
2036 | i = i >> 8; /* add one byte */ | |
2037 | l = ic->parm.ni1_io.datalen + proc_len + 8; /* length excluding ie header */ | |
2038 | if (l > 255) | |
2039 | return (-2); /* too long */ | |
2040 | ||
2041 | if (!(id = new_invoke_id(st))) | |
2042 | return (0); /* first get a invoke id -> return if no available */ | |
2043 | ||
2044 | i = -1; | |
2045 | MsgHead(p, i, MT_FACILITY); /* build message head */ | |
2046 | *p++ = 0x1C; /* Facility IE */ | |
2047 | *p++ = l; /* length of ie */ | |
2048 | *p++ = 0x91; /* remote operations */ | |
2049 | *p++ = 0xA1; /* invoke */ | |
2050 | *p++ = l - 3; /* length of invoke */ | |
2051 | *p++ = 0x02; /* invoke id tag */ | |
2052 | *p++ = 0x01; /* length is 1 */ | |
2053 | *p++ = id; /* invoke id */ | |
2054 | *p++ = 0x02; /* operation */ | |
2055 | *p++ = proc_len; /* length of operation */ | |
2056 | ||
2057 | for (i = proc_len; i; i--) | |
2058 | *p++ = (ic->parm.ni1_io.proc >> (i - 1)) & 0xFF; | |
2059 | memcpy(p, ic->parm.ni1_io.data, ic->parm.ni1_io.datalen); /* copy data */ | |
2060 | l = (p - temp) + ic->parm.ni1_io.datalen; /* total length */ | |
2061 | ||
2062 | if (ic->parm.ni1_io.timeout > 0) | |
2063 | if (!(pc = ni1_new_l3_process(st, -1))) | |
2064 | { free_invoke_id(st, id); | |
2065 | return (-2); | |
2066 | } | |
2067 | pc->prot.ni1.ll_id = ic->parm.ni1_io.ll_id; /* remember id */ | |
2068 | pc->prot.ni1.proc = ic->parm.ni1_io.proc; /* and procedure */ | |
2069 | ||
2070 | if (!(skb = l3_alloc_skb(l))) | |
2071 | { free_invoke_id(st, id); | |
2072 | if (pc) ni1_release_l3_process(pc); | |
2073 | return (-2); | |
2074 | } | |
2075 | memcpy(skb_put(skb, l), temp, l); | |
2076 | ||
2077 | if (pc) | |
2078 | { pc->prot.ni1.invoke_id = id; /* remember id */ | |
2079 | L3AddTimer(&pc->timer, ic->parm.ni1_io.timeout, CC_TNI1_IO | REQUEST); | |
2080 | } | |
2081 | ||
2082 | l3_msg(st, DL_DATA | REQUEST, skb); | |
2083 | ic->parm.ni1_io.hl_id = id; /* return id */ | |
2084 | return (0); | |
2085 | ||
2086 | case NI1_CMD_INVOKE_ABORT: | |
2087 | if ((pc = l3ni1_search_dummy_proc(st, ic->parm.ni1_io.hl_id))) | |
2088 | { L3DelTimer(&pc->timer); /* remove timer */ | |
2089 | ni1_release_l3_process(pc); | |
2090 | return (0); | |
2091 | } | |
2092 | else | |
2093 | { l3_debug(st, "l3ni1_cmd_global abort unknown id"); | |
2094 | return (-2); | |
2095 | } | |
2096 | break; | |
2097 | ||
2098 | default: | |
2099 | l3_debug(st, "l3ni1_cmd_global unknown cmd 0x%lx", ic->arg); | |
2100 | return (-1); | |
2101 | } /* switch ic-> arg */ | |
2102 | return (-1); | |
1da177e4 LT |
2103 | } /* l3ni1_cmd_global */ |
2104 | ||
475be4d8 | 2105 | static void |
1da177e4 LT |
2106 | l3ni1_io_timer(struct l3_process *pc) |
2107 | { isdn_ctrl ic; | |
475be4d8 | 2108 | struct IsdnCardState *cs = pc->st->l1.hardware; |
1da177e4 | 2109 | |
475be4d8 | 2110 | L3DelTimer(&pc->timer); /* remove timer */ |
1da177e4 | 2111 | |
475be4d8 JP |
2112 | ic.driver = cs->myid; |
2113 | ic.command = ISDN_STAT_PROT; | |
2114 | ic.arg = NI1_STAT_INVOKE_ERR; | |
2115 | ic.parm.ni1_io.hl_id = pc->prot.ni1.invoke_id; | |
2116 | ic.parm.ni1_io.ll_id = pc->prot.ni1.ll_id; | |
2117 | ic.parm.ni1_io.proc = pc->prot.ni1.proc; | |
2118 | ic.parm.ni1_io.timeout = -1; | |
2119 | ic.parm.ni1_io.datalen = 0; | |
2120 | ic.parm.ni1_io.data = NULL; | |
2121 | free_invoke_id(pc->st, pc->prot.ni1.invoke_id); | |
2122 | pc->prot.ni1.invoke_id = 0; /* reset id */ | |
1da177e4 | 2123 | |
475be4d8 | 2124 | cs->iif.statcallb(&ic); |
1da177e4 | 2125 | |
475be4d8 | 2126 | ni1_release_l3_process(pc); |
1da177e4 LT |
2127 | } /* l3ni1_io_timer */ |
2128 | ||
2129 | static void | |
2130 | l3ni1_release_ind(struct l3_process *pc, u_char pr, void *arg) | |
2131 | { | |
2132 | u_char *p; | |
2133 | struct sk_buff *skb = arg; | |
2134 | int callState = 0; | |
2135 | p = skb->data; | |
2136 | ||
2137 | if ((p = findie(p, skb->len, IE_CALL_STATE, 0))) { | |
2138 | p++; | |
2139 | if (1 == *p++) | |
2140 | callState = *p; | |
2141 | } | |
2142 | if (callState == 0) { | |
2143 | /* ETS 300-104 7.6.1, 8.6.1, 10.6.1... and 16.1 | |
2144 | * set down layer 3 without sending any message | |
2145 | */ | |
2146 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
2147 | newl3state(pc, 0); | |
2148 | ni1_release_l3_process(pc); | |
2149 | } else { | |
2150 | pc->st->l3.l3l4(pc->st, CC_IGNORE | INDICATION, pc); | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | static void | |
2155 | l3ni1_dummy(struct l3_process *pc, u_char pr, void *arg) | |
2156 | { | |
2157 | } | |
2158 | ||
2159 | static void | |
2160 | l3ni1_t302(struct l3_process *pc, u_char pr, void *arg) | |
2161 | { | |
2162 | L3DelTimer(&pc->timer); | |
2163 | pc->para.loc = 0; | |
2164 | pc->para.cause = 28; /* invalid number */ | |
2165 | l3ni1_disconnect_req(pc, pr, NULL); | |
2166 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); | |
2167 | } | |
2168 | ||
2169 | static void | |
2170 | l3ni1_t303(struct l3_process *pc, u_char pr, void *arg) | |
2171 | { | |
2172 | if (pc->N303 > 0) { | |
2173 | pc->N303--; | |
2174 | L3DelTimer(&pc->timer); | |
2175 | l3ni1_setup_req(pc, pr, arg); | |
2176 | } else { | |
2177 | L3DelTimer(&pc->timer); | |
2178 | l3ni1_message_cause(pc, MT_RELEASE_COMPLETE, 102); | |
2179 | pc->st->l3.l3l4(pc->st, CC_NOSETUP_RSP, pc); | |
2180 | ni1_release_l3_process(pc); | |
2181 | } | |
2182 | } | |
2183 | ||
2184 | static void | |
2185 | l3ni1_t304(struct l3_process *pc, u_char pr, void *arg) | |
2186 | { | |
2187 | L3DelTimer(&pc->timer); | |
2188 | pc->para.loc = 0; | |
2189 | pc->para.cause = 102; | |
2190 | l3ni1_disconnect_req(pc, pr, NULL); | |
2191 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); | |
2192 | ||
2193 | } | |
2194 | ||
2195 | static void | |
2196 | l3ni1_t305(struct l3_process *pc, u_char pr, void *arg) | |
2197 | { | |
2198 | u_char tmp[16]; | |
2199 | u_char *p = tmp; | |
2200 | int l; | |
2201 | struct sk_buff *skb; | |
2202 | u_char cause = 16; | |
2203 | ||
2204 | L3DelTimer(&pc->timer); | |
2205 | if (pc->para.cause != NO_CAUSE) | |
2206 | cause = pc->para.cause; | |
2207 | ||
2208 | MsgHead(p, pc->callref, MT_RELEASE); | |
2209 | ||
2210 | *p++ = IE_CAUSE; | |
2211 | *p++ = 0x2; | |
2212 | *p++ = 0x80; | |
2213 | *p++ = cause | 0x80; | |
2214 | ||
2215 | l = p - tmp; | |
2216 | if (!(skb = l3_alloc_skb(l))) | |
2217 | return; | |
2218 | memcpy(skb_put(skb, l), tmp, l); | |
2219 | newl3state(pc, 19); | |
2220 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2221 | L3AddTimer(&pc->timer, T308, CC_T308_1); | |
2222 | } | |
2223 | ||
2224 | static void | |
2225 | l3ni1_t310(struct l3_process *pc, u_char pr, void *arg) | |
2226 | { | |
2227 | L3DelTimer(&pc->timer); | |
2228 | pc->para.loc = 0; | |
2229 | pc->para.cause = 102; | |
2230 | l3ni1_disconnect_req(pc, pr, NULL); | |
2231 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); | |
2232 | } | |
2233 | ||
2234 | static void | |
2235 | l3ni1_t313(struct l3_process *pc, u_char pr, void *arg) | |
2236 | { | |
2237 | L3DelTimer(&pc->timer); | |
2238 | pc->para.loc = 0; | |
2239 | pc->para.cause = 102; | |
2240 | l3ni1_disconnect_req(pc, pr, NULL); | |
2241 | pc->st->l3.l3l4(pc->st, CC_CONNECT_ERR, pc); | |
2242 | } | |
2243 | ||
2244 | static void | |
2245 | l3ni1_t308_1(struct l3_process *pc, u_char pr, void *arg) | |
2246 | { | |
2247 | newl3state(pc, 19); | |
2248 | L3DelTimer(&pc->timer); | |
2249 | l3ni1_message(pc, MT_RELEASE); | |
2250 | L3AddTimer(&pc->timer, T308, CC_T308_2); | |
2251 | } | |
2252 | ||
2253 | static void | |
2254 | l3ni1_t308_2(struct l3_process *pc, u_char pr, void *arg) | |
2255 | { | |
2256 | L3DelTimer(&pc->timer); | |
2257 | pc->st->l3.l3l4(pc->st, CC_RELEASE_ERR, pc); | |
2258 | ni1_release_l3_process(pc); | |
2259 | } | |
2260 | ||
2261 | static void | |
2262 | l3ni1_t318(struct l3_process *pc, u_char pr, void *arg) | |
2263 | { | |
2264 | L3DelTimer(&pc->timer); | |
2265 | pc->para.cause = 102; /* Timer expiry */ | |
2266 | pc->para.loc = 0; /* local */ | |
2267 | pc->st->l3.l3l4(pc->st, CC_RESUME_ERR, pc); | |
2268 | newl3state(pc, 19); | |
2269 | l3ni1_message(pc, MT_RELEASE); | |
2270 | L3AddTimer(&pc->timer, T308, CC_T308_1); | |
2271 | } | |
2272 | ||
2273 | static void | |
2274 | l3ni1_t319(struct l3_process *pc, u_char pr, void *arg) | |
2275 | { | |
2276 | L3DelTimer(&pc->timer); | |
2277 | pc->para.cause = 102; /* Timer expiry */ | |
2278 | pc->para.loc = 0; /* local */ | |
2279 | pc->st->l3.l3l4(pc->st, CC_SUSPEND_ERR, pc); | |
2280 | newl3state(pc, 10); | |
2281 | } | |
2282 | ||
2283 | static void | |
2284 | l3ni1_restart(struct l3_process *pc, u_char pr, void *arg) | |
2285 | { | |
2286 | L3DelTimer(&pc->timer); | |
2287 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
2288 | ni1_release_l3_process(pc); | |
2289 | } | |
2290 | ||
2291 | static void | |
2292 | l3ni1_status(struct l3_process *pc, u_char pr, void *arg) | |
2293 | { | |
2294 | u_char *p; | |
2295 | struct sk_buff *skb = arg; | |
475be4d8 | 2296 | int ret; |
1da177e4 | 2297 | u_char cause = 0, callState = 0; |
475be4d8 | 2298 | |
1da177e4 LT |
2299 | if ((ret = l3ni1_get_cause(pc, skb))) { |
2300 | if (pc->debug & L3_DEB_WARN) | |
475be4d8 | 2301 | l3_debug(pc->st, "STATUS get_cause ret(%d)", ret); |
1da177e4 LT |
2302 | if (ret < 0) |
2303 | cause = 96; | |
2304 | else if (ret > 0) | |
2305 | cause = 100; | |
2306 | } | |
2307 | if ((p = findie(skb->data, skb->len, IE_CALL_STATE, 0))) { | |
2308 | p++; | |
2309 | if (1 == *p++) { | |
2310 | callState = *p; | |
2311 | if (!ie_in_set(pc, *p, l3_valid_states)) | |
2312 | cause = 100; | |
2313 | } else | |
2314 | cause = 100; | |
2315 | } else | |
2316 | cause = 96; | |
2317 | if (!cause) { /* no error before */ | |
2318 | ret = check_infoelements(pc, skb, ie_STATUS); | |
2319 | if (ERR_IE_COMPREHENSION == ret) | |
2320 | cause = 96; | |
2321 | else if (ERR_IE_UNRECOGNIZED == ret) | |
2322 | cause = 99; | |
2323 | } | |
2324 | if (cause) { | |
2325 | u_char tmp; | |
475be4d8 | 2326 | |
1da177e4 | 2327 | if (pc->debug & L3_DEB_WARN) |
475be4d8 | 2328 | l3_debug(pc->st, "STATUS error(%d/%d)", ret, cause); |
1da177e4 LT |
2329 | tmp = pc->para.cause; |
2330 | pc->para.cause = cause; | |
2331 | l3ni1_status_send(pc, 0, NULL); | |
2332 | if (cause == 99) | |
2333 | pc->para.cause = tmp; | |
2334 | else | |
2335 | return; | |
2336 | } | |
2337 | cause = pc->para.cause; | |
2338 | if (((cause & 0x7f) == 111) && (callState == 0)) { | |
2339 | /* ETS 300-104 7.6.1, 8.6.1, 10.6.1... | |
2340 | * if received MT_STATUS with cause == 111 and call | |
2341 | * state == 0, then we must set down layer 3 | |
2342 | */ | |
2343 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
2344 | newl3state(pc, 0); | |
2345 | ni1_release_l3_process(pc); | |
2346 | } | |
2347 | } | |
2348 | ||
2349 | static void | |
2350 | l3ni1_facility(struct l3_process *pc, u_char pr, void *arg) | |
2351 | { | |
2352 | struct sk_buff *skb = arg; | |
2353 | int ret; | |
475be4d8 | 2354 | |
1da177e4 LT |
2355 | ret = check_infoelements(pc, skb, ie_FACILITY); |
2356 | l3ni1_std_ie_err(pc, ret); | |
475be4d8 | 2357 | { |
1da177e4 LT |
2358 | u_char *p; |
2359 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) | |
2360 | l3ni1_parse_facility(pc->st, pc, pc->callref, p); | |
2361 | } | |
2362 | } | |
2363 | ||
2364 | static void | |
2365 | l3ni1_suspend_req(struct l3_process *pc, u_char pr, void *arg) | |
2366 | { | |
2367 | struct sk_buff *skb; | |
2368 | u_char tmp[32]; | |
2369 | u_char *p = tmp; | |
2370 | u_char i, l; | |
2371 | u_char *msg = pc->chan->setup.phone; | |
2372 | ||
2373 | MsgHead(p, pc->callref, MT_SUSPEND); | |
2374 | l = *msg++; | |
2375 | if (l && (l <= 10)) { /* Max length 10 octets */ | |
2376 | *p++ = IE_CALL_ID; | |
2377 | *p++ = l; | |
2378 | for (i = 0; i < l; i++) | |
2379 | *p++ = *msg++; | |
2380 | } else if (l) { | |
2381 | l3_debug(pc->st, "SUS wrong CALL_ID len %d", l); | |
2382 | return; | |
2383 | } | |
2384 | l = p - tmp; | |
2385 | if (!(skb = l3_alloc_skb(l))) | |
2386 | return; | |
2387 | memcpy(skb_put(skb, l), tmp, l); | |
2388 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2389 | newl3state(pc, 15); | |
2390 | L3AddTimer(&pc->timer, T319, CC_T319); | |
2391 | } | |
2392 | ||
2393 | static void | |
2394 | l3ni1_suspend_ack(struct l3_process *pc, u_char pr, void *arg) | |
2395 | { | |
2396 | struct sk_buff *skb = arg; | |
2397 | int ret; | |
2398 | ||
2399 | L3DelTimer(&pc->timer); | |
2400 | newl3state(pc, 0); | |
2401 | pc->para.cause = NO_CAUSE; | |
2402 | pc->st->l3.l3l4(pc->st, CC_SUSPEND | CONFIRM, pc); | |
2403 | /* We don't handle suspend_ack for IE errors now */ | |
2404 | if ((ret = check_infoelements(pc, skb, ie_SUSPEND_ACKNOWLEDGE))) | |
2405 | if (pc->debug & L3_DEB_WARN) | |
475be4d8 | 2406 | l3_debug(pc->st, "SUSPACK check ie(%d)", ret); |
1da177e4 LT |
2407 | ni1_release_l3_process(pc); |
2408 | } | |
2409 | ||
2410 | static void | |
2411 | l3ni1_suspend_rej(struct l3_process *pc, u_char pr, void *arg) | |
2412 | { | |
2413 | struct sk_buff *skb = arg; | |
2414 | int ret; | |
2415 | ||
2416 | if ((ret = l3ni1_get_cause(pc, skb))) { | |
2417 | if (pc->debug & L3_DEB_WARN) | |
475be4d8 JP |
2418 | l3_debug(pc->st, "SUSP_REJ get_cause ret(%d)", ret); |
2419 | if (ret < 0) | |
1da177e4 LT |
2420 | pc->para.cause = 96; |
2421 | else | |
2422 | pc->para.cause = 100; | |
2423 | l3ni1_status_send(pc, pr, NULL); | |
2424 | return; | |
2425 | } | |
2426 | ret = check_infoelements(pc, skb, ie_SUSPEND_REJECT); | |
2427 | if (ERR_IE_COMPREHENSION == ret) { | |
2428 | l3ni1_std_ie_err(pc, ret); | |
2429 | return; | |
2430 | } | |
2431 | L3DelTimer(&pc->timer); | |
2432 | pc->st->l3.l3l4(pc->st, CC_SUSPEND_ERR, pc); | |
2433 | newl3state(pc, 10); | |
2434 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
2435 | l3ni1_std_ie_err(pc, ret); | |
2436 | } | |
2437 | ||
2438 | static void | |
2439 | l3ni1_resume_req(struct l3_process *pc, u_char pr, void *arg) | |
2440 | { | |
2441 | struct sk_buff *skb; | |
2442 | u_char tmp[32]; | |
2443 | u_char *p = tmp; | |
2444 | u_char i, l; | |
2445 | u_char *msg = pc->para.setup.phone; | |
2446 | ||
2447 | MsgHead(p, pc->callref, MT_RESUME); | |
2448 | ||
2449 | l = *msg++; | |
2450 | if (l && (l <= 10)) { /* Max length 10 octets */ | |
2451 | *p++ = IE_CALL_ID; | |
2452 | *p++ = l; | |
2453 | for (i = 0; i < l; i++) | |
2454 | *p++ = *msg++; | |
2455 | } else if (l) { | |
2456 | l3_debug(pc->st, "RES wrong CALL_ID len %d", l); | |
2457 | return; | |
2458 | } | |
2459 | l = p - tmp; | |
2460 | if (!(skb = l3_alloc_skb(l))) | |
2461 | return; | |
2462 | memcpy(skb_put(skb, l), tmp, l); | |
2463 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2464 | newl3state(pc, 17); | |
2465 | L3AddTimer(&pc->timer, T318, CC_T318); | |
2466 | } | |
2467 | ||
2468 | static void | |
2469 | l3ni1_resume_ack(struct l3_process *pc, u_char pr, void *arg) | |
2470 | { | |
2471 | struct sk_buff *skb = arg; | |
2472 | int id, ret; | |
2473 | ||
2474 | if ((id = l3ni1_get_channel_id(pc, skb)) > 0) { | |
2475 | if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) { | |
2476 | if (pc->debug & L3_DEB_WARN) | |
2477 | l3_debug(pc->st, "resume ack with wrong chid %x", id); | |
2478 | pc->para.cause = 100; | |
2479 | l3ni1_status_send(pc, pr, NULL); | |
2480 | return; | |
2481 | } | |
2482 | pc->para.bchannel = id; | |
2483 | } else if (1 == pc->state) { | |
2484 | if (pc->debug & L3_DEB_WARN) | |
2485 | l3_debug(pc->st, "resume ack without chid (ret %d)", id); | |
2486 | pc->para.cause = 96; | |
2487 | l3ni1_status_send(pc, pr, NULL); | |
2488 | return; | |
2489 | } | |
2490 | ret = check_infoelements(pc, skb, ie_RESUME_ACKNOWLEDGE); | |
2491 | if (ERR_IE_COMPREHENSION == ret) { | |
2492 | l3ni1_std_ie_err(pc, ret); | |
2493 | return; | |
2494 | } | |
2495 | L3DelTimer(&pc->timer); | |
2496 | pc->st->l3.l3l4(pc->st, CC_RESUME | CONFIRM, pc); | |
2497 | newl3state(pc, 10); | |
2498 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
2499 | l3ni1_std_ie_err(pc, ret); | |
2500 | } | |
2501 | ||
2502 | static void | |
2503 | l3ni1_resume_rej(struct l3_process *pc, u_char pr, void *arg) | |
2504 | { | |
2505 | struct sk_buff *skb = arg; | |
2506 | int ret; | |
2507 | ||
2508 | if ((ret = l3ni1_get_cause(pc, skb))) { | |
2509 | if (pc->debug & L3_DEB_WARN) | |
475be4d8 JP |
2510 | l3_debug(pc->st, "RES_REJ get_cause ret(%d)", ret); |
2511 | if (ret < 0) | |
1da177e4 LT |
2512 | pc->para.cause = 96; |
2513 | else | |
2514 | pc->para.cause = 100; | |
2515 | l3ni1_status_send(pc, pr, NULL); | |
2516 | return; | |
2517 | } | |
2518 | ret = check_infoelements(pc, skb, ie_RESUME_REJECT); | |
2519 | if (ERR_IE_COMPREHENSION == ret) { | |
2520 | l3ni1_std_ie_err(pc, ret); | |
2521 | return; | |
2522 | } | |
2523 | L3DelTimer(&pc->timer); | |
2524 | pc->st->l3.l3l4(pc->st, CC_RESUME_ERR, pc); | |
2525 | newl3state(pc, 0); | |
2526 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
2527 | l3ni1_std_ie_err(pc, ret); | |
2528 | ni1_release_l3_process(pc); | |
2529 | } | |
2530 | ||
2531 | static void | |
2532 | l3ni1_global_restart(struct l3_process *pc, u_char pr, void *arg) | |
2533 | { | |
2534 | u_char tmp[32]; | |
2535 | u_char *p; | |
2536 | u_char ri, ch = 0, chan = 0; | |
2537 | int l; | |
2538 | struct sk_buff *skb = arg; | |
2539 | struct l3_process *up; | |
2540 | ||
2541 | newl3state(pc, 2); | |
2542 | L3DelTimer(&pc->timer); | |
2543 | p = skb->data; | |
2544 | if ((p = findie(p, skb->len, IE_RESTART_IND, 0))) { | |
2545 | ri = p[2]; | |
2546 | l3_debug(pc->st, "Restart %x", ri); | |
2547 | } else { | |
2548 | l3_debug(pc->st, "Restart without restart IE"); | |
2549 | ri = 0x86; | |
2550 | } | |
2551 | p = skb->data; | |
2552 | if ((p = findie(p, skb->len, IE_CHANNEL_ID, 0))) { | |
2553 | chan = p[2] & 3; | |
2554 | ch = p[2]; | |
2555 | if (pc->st->l3.debug) | |
2556 | l3_debug(pc->st, "Restart for channel %d", chan); | |
2557 | } | |
2558 | newl3state(pc, 2); | |
2559 | up = pc->st->l3.proc; | |
2560 | while (up) { | |
2561 | if ((ri & 7) == 7) | |
2562 | up->st->lli.l4l3(up->st, CC_RESTART | REQUEST, up); | |
2563 | else if (up->para.bchannel == chan) | |
2564 | up->st->lli.l4l3(up->st, CC_RESTART | REQUEST, up); | |
475be4d8 | 2565 | |
1da177e4 LT |
2566 | up = up->next; |
2567 | } | |
2568 | p = tmp; | |
2569 | MsgHead(p, pc->callref, MT_RESTART_ACKNOWLEDGE); | |
2570 | if (chan) { | |
2571 | *p++ = IE_CHANNEL_ID; | |
2572 | *p++ = 1; | |
2573 | *p++ = ch | 0x80; | |
2574 | } | |
2575 | *p++ = 0x79; /* RESTART Ind */ | |
2576 | *p++ = 1; | |
2577 | *p++ = ri; | |
2578 | l = p - tmp; | |
2579 | if (!(skb = l3_alloc_skb(l))) | |
2580 | return; | |
2581 | memcpy(skb_put(skb, l), tmp, l); | |
2582 | newl3state(pc, 0); | |
2583 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2584 | } | |
2585 | ||
2586 | static void | |
2587 | l3ni1_dl_reset(struct l3_process *pc, u_char pr, void *arg) | |
2588 | { | |
475be4d8 JP |
2589 | pc->para.cause = 0x29; /* Temporary failure */ |
2590 | pc->para.loc = 0; | |
2591 | l3ni1_disconnect_req(pc, pr, NULL); | |
2592 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); | |
1da177e4 LT |
2593 | } |
2594 | ||
2595 | static void | |
2596 | l3ni1_dl_release(struct l3_process *pc, u_char pr, void *arg) | |
2597 | { | |
475be4d8 JP |
2598 | newl3state(pc, 0); |
2599 | pc->para.cause = 0x1b; /* Destination out of order */ | |
2600 | pc->para.loc = 0; | |
2601 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
2602 | release_l3_process(pc); | |
1da177e4 LT |
2603 | } |
2604 | ||
2605 | static void | |
2606 | l3ni1_dl_reestablish(struct l3_process *pc, u_char pr, void *arg) | |
2607 | { | |
475be4d8 JP |
2608 | L3DelTimer(&pc->timer); |
2609 | L3AddTimer(&pc->timer, T309, CC_T309); | |
2610 | l3_msg(pc->st, DL_ESTABLISH | REQUEST, NULL); | |
1da177e4 | 2611 | } |
475be4d8 | 2612 | |
1da177e4 LT |
2613 | static void |
2614 | l3ni1_dl_reest_status(struct l3_process *pc, u_char pr, void *arg) | |
2615 | { | |
2616 | L3DelTimer(&pc->timer); | |
475be4d8 JP |
2617 | |
2618 | pc->para.cause = 0x1F; /* normal, unspecified */ | |
1da177e4 LT |
2619 | l3ni1_status_send(pc, 0, NULL); |
2620 | } | |
2621 | ||
475be4d8 | 2622 | static void l3ni1_SendSpid(struct l3_process *pc, u_char pr, struct sk_buff *skb, int iNewState) |
1da177e4 | 2623 | { |
475be4d8 JP |
2624 | u_char *p; |
2625 | char *pSPID; | |
2626 | struct Channel *pChan = pc->st->lli.userdata; | |
2627 | int l; | |
1da177e4 | 2628 | |
475be4d8 JP |
2629 | if (skb) |
2630 | dev_kfree_skb(skb); | |
1da177e4 | 2631 | |
475be4d8 | 2632 | if (!(pSPID = strchr(pChan->setup.eazmsn, ':'))) |
1da177e4 | 2633 | { |
475be4d8 JP |
2634 | printk(KERN_ERR "SPID not supplied in EAZMSN %s\n", pChan->setup.eazmsn); |
2635 | newl3state(pc, 0); | |
2636 | pc->st->l3.l3l2(pc->st, DL_RELEASE | REQUEST, NULL); | |
1da177e4 LT |
2637 | return; |
2638 | } | |
2639 | ||
475be4d8 JP |
2640 | l = strlen(++pSPID); |
2641 | if (!(skb = l3_alloc_skb(5 + l))) | |
1da177e4 | 2642 | { |
475be4d8 | 2643 | printk(KERN_ERR "HiSax can't get memory to send SPID\n"); |
1da177e4 LT |
2644 | return; |
2645 | } | |
2646 | ||
475be4d8 | 2647 | p = skb_put(skb, 5); |
1da177e4 LT |
2648 | *p++ = PROTO_DIS_EURO; |
2649 | *p++ = 0; | |
2650 | *p++ = MT_INFORMATION; | |
2651 | *p++ = IE_SPID; | |
2652 | *p++ = l; | |
2653 | ||
475be4d8 | 2654 | memcpy(skb_put(skb, l), pSPID, l); |
1da177e4 | 2655 | |
475be4d8 | 2656 | newl3state(pc, iNewState); |
1da177e4 | 2657 | |
475be4d8 JP |
2658 | L3DelTimer(&pc->timer); |
2659 | L3AddTimer(&pc->timer, TSPID, CC_TSPID); | |
1da177e4 | 2660 | |
475be4d8 | 2661 | pc->st->l3.l3l2(pc->st, DL_DATA | REQUEST, skb); |
1da177e4 LT |
2662 | } |
2663 | ||
475be4d8 | 2664 | static void l3ni1_spid_send(struct l3_process *pc, u_char pr, void *arg) |
1da177e4 | 2665 | { |
475be4d8 | 2666 | l3ni1_SendSpid(pc, pr, arg, 20); |
1da177e4 LT |
2667 | } |
2668 | ||
475be4d8 | 2669 | static void l3ni1_spid_epid(struct l3_process *pc, u_char pr, void *arg) |
1da177e4 LT |
2670 | { |
2671 | struct sk_buff *skb = arg; | |
2672 | ||
475be4d8 JP |
2673 | if (skb->data[1] == 0) |
2674 | if (skb->data[3] == IE_ENDPOINT_ID) | |
1da177e4 | 2675 | { |
475be4d8 JP |
2676 | L3DelTimer(&pc->timer); |
2677 | newl3state(pc, 0); | |
2678 | l3_msg(pc->st, DL_ESTABLISH | CONFIRM, NULL); | |
1da177e4 | 2679 | } |
475be4d8 | 2680 | dev_kfree_skb(skb); |
1da177e4 LT |
2681 | } |
2682 | ||
475be4d8 | 2683 | static void l3ni1_spid_tout(struct l3_process *pc, u_char pr, void *arg) |
1da177e4 | 2684 | { |
475be4d8 JP |
2685 | if (pc->state < 22) |
2686 | l3ni1_SendSpid(pc, pr, arg, pc->state + 1); | |
1da177e4 LT |
2687 | else |
2688 | { | |
475be4d8 JP |
2689 | L3DelTimer(&pc->timer); |
2690 | dev_kfree_skb(arg); | |
1da177e4 | 2691 | |
475be4d8 JP |
2692 | printk(KERN_ERR "SPID not accepted\n"); |
2693 | newl3state(pc, 0); | |
2694 | pc->st->l3.l3l2(pc->st, DL_RELEASE | REQUEST, NULL); | |
1da177e4 LT |
2695 | } |
2696 | } | |
2697 | ||
2698 | /* *INDENT-OFF* */ | |
2699 | static struct stateentry downstatelist[] = | |
2700 | { | |
2701 | {SBIT(0), | |
2702 | CC_SETUP | REQUEST, l3ni1_setup_req}, | |
2703 | {SBIT(0), | |
2704 | CC_RESUME | REQUEST, l3ni1_resume_req}, | |
2705 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(6) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(25), | |
2706 | CC_DISCONNECT | REQUEST, l3ni1_disconnect_req}, | |
2707 | {SBIT(12), | |
2708 | CC_RELEASE | REQUEST, l3ni1_release_req}, | |
2709 | {ALL_STATES, | |
2710 | CC_RESTART | REQUEST, l3ni1_restart}, | |
2711 | {SBIT(6) | SBIT(25), | |
2712 | CC_IGNORE | REQUEST, l3ni1_reset}, | |
2713 | {SBIT(6) | SBIT(25), | |
2714 | CC_REJECT | REQUEST, l3ni1_reject_req}, | |
2715 | {SBIT(6) | SBIT(25), | |
2716 | CC_PROCEED_SEND | REQUEST, l3ni1_proceed_req}, | |
2717 | {SBIT(6), | |
2718 | CC_MORE_INFO | REQUEST, l3ni1_setup_ack_req}, | |
2719 | {SBIT(25), | |
2720 | CC_MORE_INFO | REQUEST, l3ni1_dummy}, | |
2721 | {SBIT(6) | SBIT(9) | SBIT(25), | |
2722 | CC_ALERTING | REQUEST, l3ni1_alert_req}, | |
2723 | {SBIT(6) | SBIT(7) | SBIT(9) | SBIT(25), | |
2724 | CC_SETUP | RESPONSE, l3ni1_setup_rsp}, | |
2725 | {SBIT(10), | |
2726 | CC_SUSPEND | REQUEST, l3ni1_suspend_req}, | |
475be4d8 JP |
2727 | {SBIT(7) | SBIT(9) | SBIT(25), |
2728 | CC_REDIR | REQUEST, l3ni1_redir_req}, | |
2729 | {SBIT(6), | |
2730 | CC_REDIR | REQUEST, l3ni1_redir_req_early}, | |
2731 | {SBIT(9) | SBIT(25), | |
2732 | CC_DISCONNECT | REQUEST, l3ni1_disconnect_req}, | |
1da177e4 LT |
2733 | {SBIT(25), |
2734 | CC_T302, l3ni1_t302}, | |
2735 | {SBIT(1), | |
2736 | CC_T303, l3ni1_t303}, | |
2737 | {SBIT(2), | |
2738 | CC_T304, l3ni1_t304}, | |
2739 | {SBIT(3), | |
2740 | CC_T310, l3ni1_t310}, | |
2741 | {SBIT(8), | |
2742 | CC_T313, l3ni1_t313}, | |
2743 | {SBIT(11), | |
2744 | CC_T305, l3ni1_t305}, | |
2745 | {SBIT(15), | |
2746 | CC_T319, l3ni1_t319}, | |
2747 | {SBIT(17), | |
2748 | CC_T318, l3ni1_t318}, | |
2749 | {SBIT(19), | |
2750 | CC_T308_1, l3ni1_t308_1}, | |
2751 | {SBIT(19), | |
2752 | CC_T308_2, l3ni1_t308_2}, | |
2753 | {SBIT(10), | |
2754 | CC_T309, l3ni1_dl_release}, | |
475be4d8 JP |
2755 | { SBIT(20) | SBIT(21) | SBIT(22), |
2756 | CC_TSPID, l3ni1_spid_tout }, | |
1da177e4 LT |
2757 | }; |
2758 | ||
1da177e4 LT |
2759 | static struct stateentry datastatelist[] = |
2760 | { | |
2761 | {ALL_STATES, | |
2762 | MT_STATUS_ENQUIRY, l3ni1_status_enq}, | |
2763 | {ALL_STATES, | |
2764 | MT_FACILITY, l3ni1_facility}, | |
2765 | {SBIT(19), | |
2766 | MT_STATUS, l3ni1_release_ind}, | |
2767 | {ALL_STATES, | |
2768 | MT_STATUS, l3ni1_status}, | |
2769 | {SBIT(0), | |
2770 | MT_SETUP, l3ni1_setup}, | |
2771 | {SBIT(6) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(12) | | |
2772 | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25), | |
2773 | MT_SETUP, l3ni1_dummy}, | |
2774 | {SBIT(1) | SBIT(2), | |
2775 | MT_CALL_PROCEEDING, l3ni1_call_proc}, | |
2776 | {SBIT(1), | |
2777 | MT_SETUP_ACKNOWLEDGE, l3ni1_setup_ack}, | |
2778 | {SBIT(2) | SBIT(3), | |
2779 | MT_ALERTING, l3ni1_alerting}, | |
2780 | {SBIT(2) | SBIT(3), | |
2781 | MT_PROGRESS, l3ni1_progress}, | |
2782 | {SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | | |
2783 | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25), | |
2784 | MT_INFORMATION, l3ni1_information}, | |
2785 | {SBIT(10) | SBIT(11) | SBIT(15), | |
2786 | MT_NOTIFY, l3ni1_notify}, | |
2787 | {SBIT(0) | SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(10) | | |
2788 | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25), | |
2789 | MT_RELEASE_COMPLETE, l3ni1_release_cmpl}, | |
2790 | {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), | |
2791 | MT_RELEASE, l3ni1_release}, | |
2792 | {SBIT(19), MT_RELEASE, l3ni1_release_ind}, | |
2793 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(15) | SBIT(17) | SBIT(25), | |
2794 | MT_DISCONNECT, l3ni1_disconnect}, | |
2795 | {SBIT(19), | |
2796 | MT_DISCONNECT, l3ni1_dummy}, | |
2797 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4), | |
2798 | MT_CONNECT, l3ni1_connect}, | |
2799 | {SBIT(8), | |
2800 | MT_CONNECT_ACKNOWLEDGE, l3ni1_connect_ack}, | |
2801 | {SBIT(15), | |
2802 | MT_SUSPEND_ACKNOWLEDGE, l3ni1_suspend_ack}, | |
2803 | {SBIT(15), | |
2804 | MT_SUSPEND_REJECT, l3ni1_suspend_rej}, | |
2805 | {SBIT(17), | |
2806 | MT_RESUME_ACKNOWLEDGE, l3ni1_resume_ack}, | |
2807 | {SBIT(17), | |
2808 | MT_RESUME_REJECT, l3ni1_resume_rej}, | |
2809 | }; | |
2810 | ||
1da177e4 LT |
2811 | static struct stateentry globalmes_list[] = |
2812 | { | |
2813 | {ALL_STATES, | |
2814 | MT_STATUS, l3ni1_status}, | |
2815 | {SBIT(0), | |
2816 | MT_RESTART, l3ni1_global_restart}, | |
2817 | /* {SBIT(1), | |
475be4d8 | 2818 | MT_RESTART_ACKNOWLEDGE, l3ni1_restart_ack}, |
1da177e4 | 2819 | */ |
475be4d8 JP |
2820 | { SBIT(0), MT_DL_ESTABLISHED, l3ni1_spid_send }, |
2821 | { SBIT(20) | SBIT(21) | SBIT(22), MT_INFORMATION, l3ni1_spid_epid }, | |
1da177e4 | 2822 | }; |
1da177e4 LT |
2823 | |
2824 | static struct stateentry manstatelist[] = | |
2825 | { | |
475be4d8 JP |
2826 | {SBIT(2), |
2827 | DL_ESTABLISH | INDICATION, l3ni1_dl_reset}, | |
2828 | {SBIT(10), | |
2829 | DL_ESTABLISH | CONFIRM, l3ni1_dl_reest_status}, | |
2830 | {SBIT(10), | |
2831 | DL_RELEASE | INDICATION, l3ni1_dl_reestablish}, | |
2832 | {ALL_STATES, | |
2833 | DL_RELEASE | INDICATION, l3ni1_dl_release}, | |
1da177e4 LT |
2834 | }; |
2835 | ||
1da177e4 LT |
2836 | /* *INDENT-ON* */ |
2837 | ||
2838 | ||
2839 | static void | |
2840 | global_handler(struct PStack *st, int mt, struct sk_buff *skb) | |
2841 | { | |
2842 | u_char tmp[16]; | |
2843 | u_char *p = tmp; | |
2844 | int l; | |
2845 | int i; | |
2846 | struct l3_process *proc = st->l3.global; | |
2847 | ||
475be4d8 | 2848 | if (skb) |
1da177e4 LT |
2849 | proc->callref = skb->data[2]; /* cr flag */ |
2850 | else | |
2851 | proc->callref = 0; | |
ba2d6ccb | 2852 | for (i = 0; i < ARRAY_SIZE(globalmes_list); i++) |
1da177e4 LT |
2853 | if ((mt == globalmes_list[i].primitive) && |
2854 | ((1 << proc->state) & globalmes_list[i].state)) | |
2855 | break; | |
ba2d6ccb | 2856 | if (i == ARRAY_SIZE(globalmes_list)) { |
1da177e4 LT |
2857 | if (st->l3.debug & L3_DEB_STATE) { |
2858 | l3_debug(st, "ni1 global state %d mt %x unhandled", | |
475be4d8 | 2859 | proc->state, mt); |
1da177e4 LT |
2860 | } |
2861 | MsgHead(p, proc->callref, MT_STATUS); | |
2862 | *p++ = IE_CAUSE; | |
2863 | *p++ = 0x2; | |
2864 | *p++ = 0x80; | |
475be4d8 | 2865 | *p++ = 81 | 0x80; /* invalid cr */ |
1da177e4 LT |
2866 | *p++ = 0x14; /* CallState */ |
2867 | *p++ = 0x1; | |
2868 | *p++ = proc->state & 0x3f; | |
2869 | l = p - tmp; | |
2870 | if (!(skb = l3_alloc_skb(l))) | |
2871 | return; | |
2872 | memcpy(skb_put(skb, l), tmp, l); | |
2873 | l3_msg(proc->st, DL_DATA | REQUEST, skb); | |
2874 | } else { | |
2875 | if (st->l3.debug & L3_DEB_STATE) { | |
2876 | l3_debug(st, "ni1 global %d mt %x", | |
475be4d8 | 2877 | proc->state, mt); |
1da177e4 LT |
2878 | } |
2879 | globalmes_list[i].rout(proc, mt, skb); | |
2880 | } | |
2881 | } | |
2882 | ||
2883 | static void | |
2884 | ni1up(struct PStack *st, int pr, void *arg) | |
2885 | { | |
1397c5df | 2886 | int i, mt, cr, callState; |
1da177e4 LT |
2887 | char *ptr; |
2888 | u_char *p; | |
2889 | struct sk_buff *skb = arg; | |
2890 | struct l3_process *proc; | |
2891 | ||
2892 | switch (pr) { | |
475be4d8 JP |
2893 | case (DL_DATA | INDICATION): |
2894 | case (DL_UNIT_DATA | INDICATION): | |
2895 | break; | |
2896 | case (DL_ESTABLISH | INDICATION): | |
2897 | case (DL_RELEASE | INDICATION): | |
2898 | case (DL_RELEASE | CONFIRM): | |
2899 | l3_msg(st, pr, arg); | |
2900 | return; | |
2901 | break; | |
1da177e4 | 2902 | |
475be4d8 JP |
2903 | case (DL_ESTABLISH | CONFIRM): |
2904 | global_handler(st, MT_DL_ESTABLISHED, NULL); | |
2905 | return; | |
1da177e4 | 2906 | |
475be4d8 JP |
2907 | default: |
2908 | printk(KERN_ERR "HiSax ni1up unknown pr=%04x\n", pr); | |
2909 | return; | |
1da177e4 LT |
2910 | } |
2911 | if (skb->len < 3) { | |
2912 | l3_debug(st, "ni1up frame too short(%d)", skb->len); | |
2913 | dev_kfree_skb(skb); | |
2914 | return; | |
2915 | } | |
2916 | ||
2917 | if (skb->data[0] != PROTO_DIS_EURO) { | |
2918 | if (st->l3.debug & L3_DEB_PROTERR) { | |
2919 | l3_debug(st, "ni1up%sunexpected discriminator %x message len %d", | |
2920 | (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", | |
2921 | skb->data[0], skb->len); | |
2922 | } | |
2923 | dev_kfree_skb(skb); | |
2924 | return; | |
2925 | } | |
2926 | cr = getcallref(skb->data); | |
2927 | if (skb->len < ((skb->data[1] & 0x0f) + 3)) { | |
2928 | l3_debug(st, "ni1up frame too short(%d)", skb->len); | |
2929 | dev_kfree_skb(skb); | |
2930 | return; | |
2931 | } | |
2932 | mt = skb->data[skb->data[1] + 2]; | |
2933 | if (st->l3.debug & L3_DEB_STATE) | |
2934 | l3_debug(st, "ni1up cr %d", cr); | |
2935 | if (cr == -2) { /* wrong Callref */ | |
2936 | if (st->l3.debug & L3_DEB_WARN) | |
2937 | l3_debug(st, "ni1up wrong Callref"); | |
2938 | dev_kfree_skb(skb); | |
2939 | return; | |
2940 | } else if (cr == -1) { /* Dummy Callref */ | |
2941 | if (mt == MT_FACILITY) | |
2942 | { | |
2943 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) { | |
475be4d8 JP |
2944 | l3ni1_parse_facility(st, NULL, |
2945 | (pr == (DL_DATA | INDICATION)) ? -1 : -2, p); | |
1da177e4 | 2946 | dev_kfree_skb(skb); |
475be4d8 | 2947 | return; |
1da177e4 LT |
2948 | } |
2949 | } | |
2950 | else | |
2951 | { | |
2952 | global_handler(st, mt, skb); | |
2953 | return; | |
2954 | } | |
475be4d8 | 2955 | |
1da177e4 LT |
2956 | if (st->l3.debug & L3_DEB_WARN) |
2957 | l3_debug(st, "ni1up dummy Callref (no facility msg or ie)"); | |
2958 | dev_kfree_skb(skb); | |
2959 | return; | |
475be4d8 JP |
2960 | } else if ((((skb->data[1] & 0x0f) == 1) && (0 == (cr & 0x7f))) || |
2961 | (((skb->data[1] & 0x0f) == 2) && (0 == (cr & 0x7fff)))) { /* Global CallRef */ | |
1da177e4 LT |
2962 | if (st->l3.debug & L3_DEB_STATE) |
2963 | l3_debug(st, "ni1up Global CallRef"); | |
2964 | global_handler(st, mt, skb); | |
2965 | dev_kfree_skb(skb); | |
2966 | return; | |
2967 | } else if (!(proc = getl3proc(st, cr))) { | |
2968 | /* No transaction process exist, that means no call with | |
2969 | * this callreference is active | |
2970 | */ | |
2971 | if (mt == MT_SETUP) { | |
2972 | /* Setup creates a new transaction process */ | |
2973 | if (skb->data[2] & 0x80) { | |
2974 | /* Setup with wrong CREF flag */ | |
2975 | if (st->l3.debug & L3_DEB_STATE) | |
2976 | l3_debug(st, "ni1up wrong CRef flag"); | |
2977 | dev_kfree_skb(skb); | |
2978 | return; | |
2979 | } | |
2980 | if (!(proc = ni1_new_l3_process(st, cr))) { | |
2981 | /* May be to answer with RELEASE_COMPLETE and | |
2982 | * CAUSE 0x2f "Resource unavailable", but this | |
2983 | * need a new_l3_process too ... arghh | |
2984 | */ | |
2985 | dev_kfree_skb(skb); | |
2986 | return; | |
2987 | } | |
2988 | } else if (mt == MT_STATUS) { | |
1da177e4 LT |
2989 | if ((ptr = findie(skb->data, skb->len, IE_CAUSE, 0)) != NULL) { |
2990 | ptr++; | |
2991 | if (*ptr++ == 2) | |
2992 | ptr++; | |
1da177e4 LT |
2993 | } |
2994 | callState = 0; | |
2995 | if ((ptr = findie(skb->data, skb->len, IE_CALL_STATE, 0)) != NULL) { | |
2996 | ptr++; | |
2997 | if (*ptr++ == 2) | |
2998 | ptr++; | |
2999 | callState = *ptr; | |
3000 | } | |
3001 | /* ETS 300-104 part 2.4.1 | |
3002 | * if setup has not been made and a message type | |
3003 | * MT_STATUS is received with call state == 0, | |
3004 | * we must send nothing | |
3005 | */ | |
3006 | if (callState != 0) { | |
3007 | /* ETS 300-104 part 2.4.2 | |
3008 | * if setup has not been made and a message type | |
3009 | * MT_STATUS is received with call state != 0, | |
3010 | * we must send MT_RELEASE_COMPLETE cause 101 | |
3011 | */ | |
3012 | if ((proc = ni1_new_l3_process(st, cr))) { | |
3013 | proc->para.cause = 101; | |
3014 | l3ni1_msg_without_setup(proc, 0, NULL); | |
3015 | } | |
3016 | } | |
3017 | dev_kfree_skb(skb); | |
3018 | return; | |
3019 | } else if (mt == MT_RELEASE_COMPLETE) { | |
3020 | dev_kfree_skb(skb); | |
3021 | return; | |
3022 | } else { | |
3023 | /* ETS 300-104 part 2 | |
3024 | * if setup has not been made and a message type | |
3025 | * (except MT_SETUP and RELEASE_COMPLETE) is received, | |
3026 | * we must send MT_RELEASE_COMPLETE cause 81 */ | |
3027 | dev_kfree_skb(skb); | |
3028 | if ((proc = ni1_new_l3_process(st, cr))) { | |
3029 | proc->para.cause = 81; | |
3030 | l3ni1_msg_without_setup(proc, 0, NULL); | |
3031 | } | |
3032 | return; | |
3033 | } | |
3034 | } | |
3035 | if (l3ni1_check_messagetype_validity(proc, mt, skb)) { | |
3036 | dev_kfree_skb(skb); | |
3037 | return; | |
3038 | } | |
475be4d8 JP |
3039 | if ((p = findie(skb->data, skb->len, IE_DISPLAY, 0)) != NULL) |
3040 | l3ni1_deliver_display(proc, pr, p); /* Display IE included */ | |
ba2d6ccb | 3041 | for (i = 0; i < ARRAY_SIZE(datastatelist); i++) |
1da177e4 LT |
3042 | if ((mt == datastatelist[i].primitive) && |
3043 | ((1 << proc->state) & datastatelist[i].state)) | |
3044 | break; | |
ba2d6ccb | 3045 | if (i == ARRAY_SIZE(datastatelist)) { |
1da177e4 LT |
3046 | if (st->l3.debug & L3_DEB_STATE) { |
3047 | l3_debug(st, "ni1up%sstate %d mt %#x unhandled", | |
475be4d8 JP |
3048 | (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", |
3049 | proc->state, mt); | |
1da177e4 LT |
3050 | } |
3051 | if ((MT_RELEASE_COMPLETE != mt) && (MT_RELEASE != mt)) { | |
3052 | proc->para.cause = 101; | |
3053 | l3ni1_status_send(proc, pr, skb); | |
3054 | } | |
3055 | } else { | |
3056 | if (st->l3.debug & L3_DEB_STATE) { | |
3057 | l3_debug(st, "ni1up%sstate %d mt %x", | |
475be4d8 JP |
3058 | (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", |
3059 | proc->state, mt); | |
1da177e4 LT |
3060 | } |
3061 | datastatelist[i].rout(proc, pr, skb); | |
3062 | } | |
3063 | dev_kfree_skb(skb); | |
3064 | return; | |
3065 | } | |
3066 | ||
3067 | static void | |
3068 | ni1down(struct PStack *st, int pr, void *arg) | |
3069 | { | |
3070 | int i, cr; | |
3071 | struct l3_process *proc; | |
3072 | struct Channel *chan; | |
3073 | ||
3074 | if ((DL_ESTABLISH | REQUEST) == pr) { | |
3075 | l3_msg(st, pr, NULL); | |
3076 | return; | |
3077 | } else if (((CC_SETUP | REQUEST) == pr) || ((CC_RESUME | REQUEST) == pr)) { | |
3078 | chan = arg; | |
3079 | cr = newcallref(); | |
3080 | cr |= 0x80; | |
3081 | if ((proc = ni1_new_l3_process(st, cr))) { | |
3082 | proc->chan = chan; | |
3083 | chan->proc = proc; | |
3084 | memcpy(&proc->para.setup, &chan->setup, sizeof(setup_parm)); | |
3085 | proc->callref = cr; | |
3086 | } | |
3087 | } else { | |
3088 | proc = arg; | |
3089 | } | |
3090 | if (!proc) { | |
3091 | printk(KERN_ERR "HiSax ni1down without proc pr=%04x\n", pr); | |
3092 | return; | |
3093 | } | |
3094 | ||
475be4d8 JP |
3095 | if (pr == (CC_TNI1_IO | REQUEST)) { |
3096 | l3ni1_io_timer(proc); /* timer expires */ | |
1da177e4 | 3097 | return; |
475be4d8 | 3098 | } |
1da177e4 | 3099 | |
ba2d6ccb | 3100 | for (i = 0; i < ARRAY_SIZE(downstatelist); i++) |
1da177e4 LT |
3101 | if ((pr == downstatelist[i].primitive) && |
3102 | ((1 << proc->state) & downstatelist[i].state)) | |
3103 | break; | |
ba2d6ccb | 3104 | if (i == ARRAY_SIZE(downstatelist)) { |
1da177e4 LT |
3105 | if (st->l3.debug & L3_DEB_STATE) { |
3106 | l3_debug(st, "ni1down state %d prim %#x unhandled", | |
475be4d8 | 3107 | proc->state, pr); |
1da177e4 LT |
3108 | } |
3109 | } else { | |
3110 | if (st->l3.debug & L3_DEB_STATE) { | |
3111 | l3_debug(st, "ni1down state %d prim %#x", | |
475be4d8 | 3112 | proc->state, pr); |
1da177e4 LT |
3113 | } |
3114 | downstatelist[i].rout(proc, pr, arg); | |
3115 | } | |
3116 | } | |
3117 | ||
3118 | static void | |
3119 | ni1man(struct PStack *st, int pr, void *arg) | |
3120 | { | |
475be4d8 JP |
3121 | int i; |
3122 | struct l3_process *proc = arg; | |
3123 | ||
3124 | if (!proc) { | |
3125 | printk(KERN_ERR "HiSax ni1man without proc pr=%04x\n", pr); | |
3126 | return; | |
3127 | } | |
3128 | for (i = 0; i < ARRAY_SIZE(manstatelist); i++) | |
3129 | if ((pr == manstatelist[i].primitive) && | |
3130 | ((1 << proc->state) & manstatelist[i].state)) | |
3131 | break; | |
3132 | if (i == ARRAY_SIZE(manstatelist)) { | |
3133 | if (st->l3.debug & L3_DEB_STATE) { | |
3134 | l3_debug(st, "cr %d ni1man state %d prim %#x unhandled", | |
3135 | proc->callref & 0x7f, proc->state, pr); | |
3136 | } | |
3137 | } else { | |
3138 | if (st->l3.debug & L3_DEB_STATE) { | |
3139 | l3_debug(st, "cr %d ni1man state %d prim %#x", | |
3140 | proc->callref & 0x7f, proc->state, pr); | |
3141 | } | |
3142 | manstatelist[i].rout(proc, pr, arg); | |
3143 | } | |
3144 | } | |
3145 | ||
1da177e4 LT |
3146 | void |
3147 | setstack_ni1(struct PStack *st) | |
3148 | { | |
3149 | char tmp[64]; | |
3150 | int i; | |
3151 | ||
3152 | st->lli.l4l3 = ni1down; | |
3153 | st->lli.l4l3_proto = l3ni1_cmd_global; | |
3154 | st->l2.l2l3 = ni1up; | |
3155 | st->l3.l3ml3 = ni1man; | |
3156 | st->l3.N303 = 1; | |
3157 | st->prot.ni1.last_invoke_id = 0; | |
3158 | st->prot.ni1.invoke_used[0] = 1; /* Bit 0 must always be set to 1 */ | |
3159 | i = 1; | |
475be4d8 JP |
3160 | while (i < 32) |
3161 | st->prot.ni1.invoke_used[i++] = 0; | |
1da177e4 LT |
3162 | |
3163 | if (!(st->l3.global = kmalloc(sizeof(struct l3_process), GFP_ATOMIC))) { | |
3164 | printk(KERN_ERR "HiSax can't get memory for ni1 global CR\n"); | |
3165 | } else { | |
3166 | st->l3.global->state = 0; | |
3167 | st->l3.global->callref = 0; | |
3168 | st->l3.global->next = NULL; | |
3169 | st->l3.global->debug = L3_DEB_WARN; | |
3170 | st->l3.global->st = st; | |
3171 | st->l3.global->N303 = 1; | |
475be4d8 | 3172 | st->l3.global->prot.ni1.invoke_id = 0; |
1da177e4 LT |
3173 | |
3174 | L3InitTimer(st->l3.global, &st->l3.global->timer); | |
3175 | } | |
3176 | strcpy(tmp, ni1_revision); | |
3177 | printk(KERN_INFO "HiSax: National ISDN-1 Rev. %s\n", HiSax_getrev(tmp)); | |
3178 | } |