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1da177e4 LT |
1 | /* $Id: l3dss1.c,v 2.32.2.3 2004/01/13 14:31:25 keil Exp $ |
2 | * | |
3 | * EURO/DSS1 D-channel protocol | |
4 | * | |
5 | * German 1TR6 D-channel protocol | |
6 | * | |
7 | * Author Karsten Keil | |
8 | * based on the teles driver from Jan den Ouden | |
9 | * Copyright by Karsten Keil <keil@isdn4linux.de> | |
475be4d8 | 10 | * |
1da177e4 LT |
11 | * This software may be used and distributed according to the terms |
12 | * of the GNU General Public License, incorporated herein by reference. | |
13 | * | |
14 | * For changes and modifications please read | |
15 | * Documentation/isdn/HiSax.cert | |
16 | * | |
17 | * Thanks to Jan den Ouden | |
18 | * Fritz Elfert | |
19 | * | |
20 | */ | |
21 | ||
22 | #include "hisax.h" | |
23 | #include "isdnl3.h" | |
24 | #include "l3dss1.h" | |
25 | #include <linux/ctype.h> | |
5a0e3ad6 | 26 | #include <linux/slab.h> |
1da177e4 LT |
27 | |
28 | extern char *HiSax_getrev(const char *revision); | |
672c3fd9 | 29 | static const char *dss1_revision = "$Revision: 2.32.2.3 $"; |
1da177e4 LT |
30 | |
31 | #define EXT_BEARER_CAPS 1 | |
32 | ||
475be4d8 JP |
33 | #define MsgHead(ptr, cref, mty) \ |
34 | *ptr++ = 0x8; \ | |
35 | if (cref == -1) { \ | |
36 | *ptr++ = 0x0; \ | |
37 | } else { \ | |
38 | *ptr++ = 0x1; \ | |
39 | *ptr++ = cref^0x80; \ | |
40 | } \ | |
1da177e4 LT |
41 | *ptr++ = mty |
42 | ||
43 | ||
44 | /**********************************************/ | |
45 | /* get a new invoke id for remote operations. */ | |
46 | /* Only a return value != 0 is valid */ | |
47 | /**********************************************/ | |
48 | static unsigned char new_invoke_id(struct PStack *p) | |
49 | { | |
50 | unsigned char retval; | |
51 | int i; | |
475be4d8 | 52 | |
1da177e4 LT |
53 | i = 32; /* maximum search depth */ |
54 | ||
55 | retval = p->prot.dss1.last_invoke_id + 1; /* try new id */ | |
56 | while ((i) && (p->prot.dss1.invoke_used[retval >> 3] == 0xFF)) { | |
57 | p->prot.dss1.last_invoke_id = (retval & 0xF8) + 8; | |
58 | i--; | |
475be4d8 | 59 | } |
1da177e4 LT |
60 | if (i) { |
61 | while (p->prot.dss1.invoke_used[retval >> 3] & (1 << (retval & 7))) | |
475be4d8 | 62 | retval++; |
1da177e4 LT |
63 | } else |
64 | retval = 0; | |
65 | p->prot.dss1.last_invoke_id = retval; | |
66 | p->prot.dss1.invoke_used[retval >> 3] |= (1 << (retval & 7)); | |
475be4d8 | 67 | return (retval); |
1da177e4 LT |
68 | } /* new_invoke_id */ |
69 | ||
70 | /*************************/ | |
71 | /* free a used invoke id */ | |
72 | /*************************/ | |
73 | static void free_invoke_id(struct PStack *p, unsigned char id) | |
74 | { | |
75 | ||
475be4d8 | 76 | if (!id) return; /* 0 = invalid value */ |
1da177e4 | 77 | |
475be4d8 JP |
78 | p->prot.dss1.invoke_used[id >> 3] &= ~(1 << (id & 7)); |
79 | } /* free_invoke_id */ | |
1da177e4 LT |
80 | |
81 | ||
82 | /**********************************************************/ | |
83 | /* create a new l3 process and fill in dss1 specific data */ | |
84 | /**********************************************************/ | |
85 | static struct l3_process | |
86 | *dss1_new_l3_process(struct PStack *st, int cr) | |
87 | { struct l3_process *proc; | |
88 | ||
475be4d8 JP |
89 | if (!(proc = new_l3_process(st, cr))) |
90 | return (NULL); | |
1da177e4 | 91 | |
475be4d8 JP |
92 | proc->prot.dss1.invoke_id = 0; |
93 | proc->prot.dss1.remote_operation = 0; | |
94 | proc->prot.dss1.uus1_data[0] = '\0'; | |
95 | ||
96 | return (proc); | |
1da177e4 LT |
97 | } /* dss1_new_l3_process */ |
98 | ||
99 | /************************************************/ | |
100 | /* free a l3 process and all dss1 specific data */ | |
475be4d8 | 101 | /************************************************/ |
1da177e4 LT |
102 | static void |
103 | dss1_release_l3_process(struct l3_process *p) | |
104 | { | |
475be4d8 JP |
105 | free_invoke_id(p->st, p->prot.dss1.invoke_id); |
106 | release_l3_process(p); | |
1da177e4 | 107 | } /* dss1_release_l3_process */ |
475be4d8 | 108 | |
1da177e4 LT |
109 | /********************************************************/ |
110 | /* search a process with invoke id id and dummy callref */ | |
111 | /********************************************************/ | |
112 | static struct l3_process * | |
113 | l3dss1_search_dummy_proc(struct PStack *st, int id) | |
114 | { struct l3_process *pc = st->l3.proc; /* start of processes */ | |
115 | ||
475be4d8 | 116 | if (!id) return (NULL); |
1da177e4 | 117 | |
475be4d8 JP |
118 | while (pc) |
119 | { if ((pc->callref == -1) && (pc->prot.dss1.invoke_id == id)) | |
120 | return (pc); | |
121 | pc = pc->next; | |
122 | } | |
123 | return (NULL); | |
1da177e4 LT |
124 | } /* l3dss1_search_dummy_proc */ |
125 | ||
126 | /*******************************************************************/ | |
127 | /* called when a facility message with a dummy callref is received */ | |
128 | /* and a return result is delivered. id specifies the invoke id. */ | |
475be4d8 JP |
129 | /*******************************************************************/ |
130 | static void | |
1da177e4 LT |
131 | l3dss1_dummy_return_result(struct PStack *st, int id, u_char *p, u_char nlen) |
132 | { isdn_ctrl ic; | |
475be4d8 JP |
133 | struct IsdnCardState *cs; |
134 | struct l3_process *pc = NULL; | |
135 | ||
136 | if ((pc = l3dss1_search_dummy_proc(st, id))) | |
137 | { L3DelTimer(&pc->timer); /* remove timer */ | |
138 | ||
139 | cs = pc->st->l1.hardware; | |
140 | ic.driver = cs->myid; | |
141 | ic.command = ISDN_STAT_PROT; | |
142 | ic.arg = DSS1_STAT_INVOKE_RES; | |
143 | ic.parm.dss1_io.hl_id = pc->prot.dss1.invoke_id; | |
144 | ic.parm.dss1_io.ll_id = pc->prot.dss1.ll_id; | |
145 | ic.parm.dss1_io.proc = pc->prot.dss1.proc; | |
146 | ic.parm.dss1_io.timeout = 0; | |
147 | ic.parm.dss1_io.datalen = nlen; | |
148 | ic.parm.dss1_io.data = p; | |
149 | free_invoke_id(pc->st, pc->prot.dss1.invoke_id); | |
150 | pc->prot.dss1.invoke_id = 0; /* reset id */ | |
151 | ||
152 | cs->iif.statcallb(&ic); | |
153 | dss1_release_l3_process(pc); | |
154 | } | |
155 | else | |
156 | l3_debug(st, "dummy return result id=0x%x result len=%d", id, nlen); | |
1da177e4 LT |
157 | } /* l3dss1_dummy_return_result */ |
158 | ||
159 | /*******************************************************************/ | |
160 | /* called when a facility message with a dummy callref is received */ | |
161 | /* and a return error is delivered. id specifies the invoke id. */ | |
475be4d8 JP |
162 | /*******************************************************************/ |
163 | static void | |
1da177e4 LT |
164 | l3dss1_dummy_error_return(struct PStack *st, int id, ulong error) |
165 | { isdn_ctrl ic; | |
475be4d8 JP |
166 | struct IsdnCardState *cs; |
167 | struct l3_process *pc = NULL; | |
168 | ||
169 | if ((pc = l3dss1_search_dummy_proc(st, id))) | |
170 | { L3DelTimer(&pc->timer); /* remove timer */ | |
171 | ||
172 | cs = pc->st->l1.hardware; | |
173 | ic.driver = cs->myid; | |
174 | ic.command = ISDN_STAT_PROT; | |
175 | ic.arg = DSS1_STAT_INVOKE_ERR; | |
176 | ic.parm.dss1_io.hl_id = pc->prot.dss1.invoke_id; | |
177 | ic.parm.dss1_io.ll_id = pc->prot.dss1.ll_id; | |
178 | ic.parm.dss1_io.proc = pc->prot.dss1.proc; | |
179 | ic.parm.dss1_io.timeout = error; | |
180 | ic.parm.dss1_io.datalen = 0; | |
181 | ic.parm.dss1_io.data = NULL; | |
182 | free_invoke_id(pc->st, pc->prot.dss1.invoke_id); | |
183 | pc->prot.dss1.invoke_id = 0; /* reset id */ | |
184 | ||
185 | cs->iif.statcallb(&ic); | |
186 | dss1_release_l3_process(pc); | |
187 | } | |
188 | else | |
189 | l3_debug(st, "dummy return error id=0x%x error=0x%lx", id, error); | |
1da177e4 LT |
190 | } /* l3dss1_error_return */ |
191 | ||
192 | /*******************************************************************/ | |
193 | /* called when a facility message with a dummy callref is received */ | |
194 | /* and a invoke is delivered. id specifies the invoke id. */ | |
475be4d8 JP |
195 | /*******************************************************************/ |
196 | static void | |
197 | l3dss1_dummy_invoke(struct PStack *st, int cr, int id, | |
198 | int ident, u_char *p, u_char nlen) | |
1da177e4 | 199 | { isdn_ctrl ic; |
475be4d8 JP |
200 | struct IsdnCardState *cs; |
201 | ||
202 | l3_debug(st, "dummy invoke %s id=0x%x ident=0x%x datalen=%d", | |
203 | (cr == -1) ? "local" : "broadcast", id, ident, nlen); | |
204 | if (cr >= -1) return; /* ignore local data */ | |
205 | ||
206 | cs = st->l1.hardware; | |
207 | ic.driver = cs->myid; | |
208 | ic.command = ISDN_STAT_PROT; | |
209 | ic.arg = DSS1_STAT_INVOKE_BRD; | |
210 | ic.parm.dss1_io.hl_id = id; | |
211 | ic.parm.dss1_io.ll_id = 0; | |
212 | ic.parm.dss1_io.proc = ident; | |
213 | ic.parm.dss1_io.timeout = 0; | |
214 | ic.parm.dss1_io.datalen = nlen; | |
215 | ic.parm.dss1_io.data = p; | |
216 | ||
217 | cs->iif.statcallb(&ic); | |
1da177e4 LT |
218 | } /* l3dss1_dummy_invoke */ |
219 | ||
220 | static void | |
221 | l3dss1_parse_facility(struct PStack *st, struct l3_process *pc, | |
475be4d8 | 222 | int cr, u_char *p) |
1da177e4 LT |
223 | { |
224 | int qd_len = 0; | |
225 | unsigned char nlen = 0, ilen, cp_tag; | |
226 | int ident, id; | |
227 | ulong err_ret; | |
228 | ||
475be4d8 | 229 | if (pc) |
1da177e4 LT |
230 | st = pc->st; /* valid Stack */ |
231 | else | |
232 | if ((!st) || (cr >= 0)) return; /* neither pc nor st specified */ | |
233 | ||
234 | p++; | |
235 | qd_len = *p++; | |
236 | if (qd_len == 0) { | |
237 | l3_debug(st, "qd_len == 0"); | |
238 | return; | |
239 | } | |
240 | if ((*p & 0x1F) != 0x11) { /* Service discriminator, supplementary service */ | |
241 | l3_debug(st, "supplementary service != 0x11"); | |
242 | return; | |
243 | } | |
244 | while (qd_len > 0 && !(*p & 0x80)) { /* extension ? */ | |
245 | p++; | |
246 | qd_len--; | |
247 | } | |
248 | if (qd_len < 2) { | |
249 | l3_debug(st, "qd_len < 2"); | |
250 | return; | |
251 | } | |
252 | p++; | |
253 | qd_len--; | |
254 | if ((*p & 0xE0) != 0xA0) { /* class and form */ | |
255 | l3_debug(st, "class and form != 0xA0"); | |
256 | return; | |
257 | } | |
1da177e4 | 258 | |
475be4d8 JP |
259 | cp_tag = *p & 0x1F; /* remember tag value */ |
260 | ||
261 | p++; | |
1da177e4 | 262 | qd_len--; |
475be4d8 JP |
263 | if (qd_len < 1) |
264 | { l3_debug(st, "qd_len < 1"); | |
265 | return; | |
266 | } | |
267 | if (*p & 0x80) | |
268 | { /* length format indefinite or limited */ | |
269 | nlen = *p++ & 0x7F; /* number of len bytes or indefinite */ | |
270 | if ((qd_len-- < ((!nlen) ? 3 : (1 + nlen))) || | |
271 | (nlen > 1)) | |
272 | { l3_debug(st, "length format error or not implemented"); | |
273 | return; | |
274 | } | |
275 | if (nlen == 1) | |
276 | { nlen = *p++; /* complete length */ | |
277 | qd_len--; | |
278 | } | |
279 | else | |
280 | { qd_len -= 2; /* trailing null bytes */ | |
281 | if ((*(p + qd_len)) || (*(p + qd_len + 1))) | |
282 | { l3_debug(st, "length format indefinite error"); | |
283 | return; | |
284 | } | |
285 | nlen = qd_len; | |
286 | } | |
287 | } | |
288 | else | |
289 | { nlen = *p++; | |
290 | qd_len--; | |
291 | } | |
292 | if (qd_len < nlen) | |
293 | { l3_debug(st, "qd_len < nlen"); | |
294 | return; | |
295 | } | |
1da177e4 LT |
296 | qd_len -= nlen; |
297 | ||
475be4d8 JP |
298 | if (nlen < 2) |
299 | { l3_debug(st, "nlen < 2"); | |
300 | return; | |
301 | } | |
302 | if (*p != 0x02) | |
303 | { /* invoke identifier tag */ | |
304 | l3_debug(st, "invoke identifier tag !=0x02"); | |
305 | return; | |
306 | } | |
1da177e4 LT |
307 | p++; |
308 | nlen--; | |
475be4d8 JP |
309 | if (*p & 0x80) |
310 | { /* length format */ | |
311 | l3_debug(st, "invoke id length format 2"); | |
312 | return; | |
313 | } | |
1da177e4 LT |
314 | ilen = *p++; |
315 | nlen--; | |
475be4d8 JP |
316 | if (ilen > nlen || ilen == 0) |
317 | { l3_debug(st, "ilen > nlen || ilen == 0"); | |
318 | return; | |
319 | } | |
1da177e4 LT |
320 | nlen -= ilen; |
321 | id = 0; | |
475be4d8 JP |
322 | while (ilen > 0) |
323 | { id = (id << 8) | (*p++ & 0xFF); /* invoke identifier */ | |
324 | ilen--; | |
325 | } | |
1da177e4 LT |
326 | |
327 | switch (cp_tag) { /* component tag */ | |
475be4d8 JP |
328 | case 1: /* invoke */ |
329 | if (nlen < 2) { | |
330 | l3_debug(st, "nlen < 2 22"); | |
331 | return; | |
332 | } | |
333 | if (*p != 0x02) { /* operation value */ | |
334 | l3_debug(st, "operation value !=0x02"); | |
335 | return; | |
336 | } | |
337 | p++; | |
338 | nlen--; | |
339 | ilen = *p++; | |
340 | nlen--; | |
341 | if (ilen > nlen || ilen == 0) { | |
342 | l3_debug(st, "ilen > nlen || ilen == 0 22"); | |
343 | return; | |
344 | } | |
345 | nlen -= ilen; | |
346 | ident = 0; | |
347 | while (ilen > 0) { | |
348 | ident = (ident << 8) | (*p++ & 0xFF); | |
349 | ilen--; | |
350 | } | |
1da177e4 | 351 | |
475be4d8 JP |
352 | if (!pc) |
353 | { l3dss1_dummy_invoke(st, cr, id, ident, p, nlen); | |
354 | return; | |
355 | } | |
048ca169 | 356 | #ifdef CONFIG_DE_AOC |
475be4d8 JP |
357 | { |
358 | ||
359 | #define FOO1(s, a, b) \ | |
360 | while (nlen > 1) { \ | |
361 | int ilen = p[1]; \ | |
362 | if (nlen < ilen + 2) { \ | |
363 | l3_debug(st, "FOO1 nlen < ilen+2"); \ | |
364 | return; \ | |
365 | } \ | |
366 | nlen -= ilen + 2; \ | |
367 | if ((*p & 0xFF) == (a)) { \ | |
368 | int nlen = ilen; \ | |
369 | p += 2; \ | |
370 | b; \ | |
371 | } else { \ | |
372 | p += ilen + 2; \ | |
373 | } \ | |
374 | } | |
375 | ||
376 | switch (ident) { | |
377 | case 0x22: /* during */ | |
378 | FOO1("1A", 0x30, FOO1("1C", 0xA1, FOO1("1D", 0x30, FOO1("1E", 0x02, ( { | |
379 | ident = 0; | |
380 | nlen = (nlen) ? nlen : 0; /* Make gcc happy */ | |
381 | while (ilen > 0) { | |
382 | ident = (ident << 8) | *p++; | |
383 | ilen--; | |
384 | } | |
385 | if (ident > pc->para.chargeinfo) { | |
386 | pc->para.chargeinfo = ident; | |
387 | st->l3.l3l4(st, CC_CHARGE | INDICATION, pc); | |
388 | } | |
389 | if (st->l3.debug & L3_DEB_CHARGE) { | |
390 | if (*(p + 2) == 0) { | |
391 | l3_debug(st, "charging info during %d", pc->para.chargeinfo); | |
392 | } | |
393 | else { | |
394 | l3_debug(st, "charging info final %d", pc->para.chargeinfo); | |
395 | } | |
396 | } | |
1da177e4 | 397 | } |
475be4d8 JP |
398 | ))))) |
399 | break; | |
400 | case 0x24: /* final */ | |
401 | FOO1("2A", 0x30, FOO1("2B", 0x30, FOO1("2C", 0xA1, FOO1("2D", 0x30, FOO1("2E", 0x02, ( { | |
402 | ident = 0; | |
403 | nlen = (nlen) ? nlen : 0; /* Make gcc happy */ | |
404 | while (ilen > 0) { | |
405 | ident = (ident << 8) | *p++; | |
406 | ilen--; | |
407 | } | |
408 | if (ident > pc->para.chargeinfo) { | |
409 | pc->para.chargeinfo = ident; | |
410 | st->l3.l3l4(st, CC_CHARGE | INDICATION, pc); | |
411 | } | |
412 | if (st->l3.debug & L3_DEB_CHARGE) { | |
413 | l3_debug(st, "charging info final %d", pc->para.chargeinfo); | |
414 | } | |
415 | } | |
416 | )))))) | |
417 | break; | |
418 | default: | |
419 | l3_debug(st, "invoke break invalid ident %02x", ident); | |
420 | break; | |
421 | } | |
1da177e4 LT |
422 | #undef FOO1 |
423 | ||
475be4d8 | 424 | } |
048ca169 | 425 | #else /* not CONFIG_DE_AOC */ |
475be4d8 | 426 | l3_debug(st, "invoke break"); |
048ca169 | 427 | #endif /* not CONFIG_DE_AOC */ |
475be4d8 JP |
428 | break; |
429 | case 2: /* return result */ | |
430 | /* if no process available handle separately */ | |
431 | if (!pc) | |
432 | { if (cr == -1) | |
433 | l3dss1_dummy_return_result(st, id, p, nlen); | |
434 | return; | |
435 | } | |
436 | if ((pc->prot.dss1.invoke_id) && (pc->prot.dss1.invoke_id == id)) | |
437 | { /* Diversion successful */ | |
438 | free_invoke_id(st, pc->prot.dss1.invoke_id); | |
439 | pc->prot.dss1.remote_result = 0; /* success */ | |
440 | pc->prot.dss1.invoke_id = 0; | |
441 | pc->redir_result = pc->prot.dss1.remote_result; | |
442 | st->l3.l3l4(st, CC_REDIR | INDICATION, pc); } /* Diversion successful */ | |
443 | else | |
444 | l3_debug(st, "return error unknown identifier"); | |
445 | break; | |
446 | case 3: /* return error */ | |
447 | err_ret = 0; | |
448 | if (nlen < 2) | |
449 | { l3_debug(st, "return error nlen < 2"); | |
450 | return; | |
451 | } | |
452 | if (*p != 0x02) | |
453 | { /* result tag */ | |
454 | l3_debug(st, "invoke error tag !=0x02"); | |
455 | return; | |
456 | } | |
457 | p++; | |
458 | nlen--; | |
459 | if (*p > 4) | |
460 | { /* length format */ | |
461 | l3_debug(st, "invoke return errlen > 4 "); | |
462 | return; | |
463 | } | |
464 | ilen = *p++; | |
465 | nlen--; | |
466 | if (ilen > nlen || ilen == 0) | |
467 | { l3_debug(st, "error return ilen > nlen || ilen == 0"); | |
468 | return; | |
469 | } | |
470 | nlen -= ilen; | |
471 | while (ilen > 0) | |
472 | { err_ret = (err_ret << 8) | (*p++ & 0xFF); /* error value */ | |
473 | ilen--; | |
474 | } | |
475 | /* if no process available handle separately */ | |
476 | if (!pc) | |
477 | { if (cr == -1) | |
478 | l3dss1_dummy_error_return(st, id, err_ret); | |
479 | return; | |
480 | } | |
481 | if ((pc->prot.dss1.invoke_id) && (pc->prot.dss1.invoke_id == id)) | |
482 | { /* Deflection error */ | |
483 | free_invoke_id(st, pc->prot.dss1.invoke_id); | |
484 | pc->prot.dss1.remote_result = err_ret; /* result */ | |
485 | pc->prot.dss1.invoke_id = 0; | |
486 | pc->redir_result = pc->prot.dss1.remote_result; | |
487 | st->l3.l3l4(st, CC_REDIR | INDICATION, pc); | |
488 | } /* Deflection error */ | |
489 | else | |
490 | l3_debug(st, "return result unknown identifier"); | |
491 | break; | |
492 | default: | |
493 | l3_debug(st, "facility default break tag=0x%02x", cp_tag); | |
494 | break; | |
1da177e4 LT |
495 | } |
496 | } | |
497 | ||
498 | static void | |
499 | l3dss1_message(struct l3_process *pc, u_char mt) | |
500 | { | |
501 | struct sk_buff *skb; | |
502 | u_char *p; | |
503 | ||
504 | if (!(skb = l3_alloc_skb(4))) | |
505 | return; | |
506 | p = skb_put(skb, 4); | |
507 | MsgHead(p, pc->callref, mt); | |
508 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
509 | } | |
510 | ||
511 | static void | |
512 | l3dss1_message_cause(struct l3_process *pc, u_char mt, u_char cause) | |
513 | { | |
514 | struct sk_buff *skb; | |
515 | u_char tmp[16]; | |
516 | u_char *p = tmp; | |
517 | int l; | |
518 | ||
519 | MsgHead(p, pc->callref, mt); | |
520 | *p++ = IE_CAUSE; | |
521 | *p++ = 0x2; | |
522 | *p++ = 0x80; | |
523 | *p++ = cause | 0x80; | |
524 | ||
525 | l = p - tmp; | |
526 | if (!(skb = l3_alloc_skb(l))) | |
527 | return; | |
528 | memcpy(skb_put(skb, l), tmp, l); | |
529 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
530 | } | |
531 | ||
532 | static void | |
533 | l3dss1_status_send(struct l3_process *pc, u_char pr, void *arg) | |
534 | { | |
535 | u_char tmp[16]; | |
536 | u_char *p = tmp; | |
537 | int l; | |
538 | struct sk_buff *skb; | |
539 | ||
540 | MsgHead(p, pc->callref, MT_STATUS); | |
541 | ||
542 | *p++ = IE_CAUSE; | |
543 | *p++ = 0x2; | |
544 | *p++ = 0x80; | |
545 | *p++ = pc->para.cause | 0x80; | |
546 | ||
547 | *p++ = IE_CALL_STATE; | |
548 | *p++ = 0x1; | |
549 | *p++ = pc->state & 0x3f; | |
550 | ||
551 | l = p - tmp; | |
552 | if (!(skb = l3_alloc_skb(l))) | |
553 | return; | |
554 | memcpy(skb_put(skb, l), tmp, l); | |
555 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
556 | } | |
557 | ||
558 | static void | |
559 | l3dss1_msg_without_setup(struct l3_process *pc, u_char pr, void *arg) | |
560 | { | |
561 | /* This routine is called if here was no SETUP made (checks in dss1up and in | |
562 | * l3dss1_setup) and a RELEASE_COMPLETE have to be sent with an error code | |
563 | * MT_STATUS_ENQUIRE in the NULL state is handled too | |
564 | */ | |
565 | u_char tmp[16]; | |
566 | u_char *p = tmp; | |
567 | int l; | |
568 | struct sk_buff *skb; | |
569 | ||
570 | switch (pc->para.cause) { | |
475be4d8 JP |
571 | case 81: /* invalid callreference */ |
572 | case 88: /* incomp destination */ | |
573 | case 96: /* mandory IE missing */ | |
574 | case 100: /* invalid IE contents */ | |
575 | case 101: /* incompatible Callstate */ | |
576 | MsgHead(p, pc->callref, MT_RELEASE_COMPLETE); | |
577 | *p++ = IE_CAUSE; | |
578 | *p++ = 0x2; | |
579 | *p++ = 0x80; | |
580 | *p++ = pc->para.cause | 0x80; | |
581 | break; | |
582 | default: | |
583 | printk(KERN_ERR "HiSax l3dss1_msg_without_setup wrong cause %d\n", | |
584 | pc->para.cause); | |
585 | return; | |
1da177e4 LT |
586 | } |
587 | l = p - tmp; | |
588 | if (!(skb = l3_alloc_skb(l))) | |
589 | return; | |
590 | memcpy(skb_put(skb, l), tmp, l); | |
591 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
592 | dss1_release_l3_process(pc); | |
593 | } | |
594 | ||
595 | static int ie_ALERTING[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1, | |
475be4d8 JP |
596 | IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, IE_HLC, |
597 | IE_USER_USER, -1}; | |
1da177e4 | 598 | static int ie_CALL_PROCEEDING[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1, |
475be4d8 JP |
599 | IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_HLC, -1}; |
600 | static int ie_CONNECT[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1, | |
601 | IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_DATE, IE_SIGNAL, | |
602 | IE_CONNECT_PN, IE_CONNECT_SUB, IE_LLC, IE_HLC, IE_USER_USER, -1}; | |
1da177e4 LT |
603 | static int ie_CONNECT_ACKNOWLEDGE[] = {IE_CHANNEL_ID, IE_DISPLAY, IE_SIGNAL, -1}; |
604 | static int ie_DISCONNECT[] = {IE_CAUSE | IE_MANDATORY, IE_FACILITY, | |
475be4d8 | 605 | IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, IE_USER_USER, -1}; |
1da177e4 | 606 | static int ie_INFORMATION[] = {IE_COMPLETE, IE_DISPLAY, IE_KEYPAD, IE_SIGNAL, |
475be4d8 | 607 | IE_CALLED_PN, -1}; |
1da177e4 LT |
608 | static int ie_NOTIFY[] = {IE_BEARER, IE_NOTIFY | IE_MANDATORY, IE_DISPLAY, -1}; |
609 | static int ie_PROGRESS[] = {IE_BEARER, IE_CAUSE, IE_FACILITY, IE_PROGRESS | | |
475be4d8 | 610 | IE_MANDATORY, IE_DISPLAY, IE_HLC, IE_USER_USER, -1}; |
1da177e4 | 611 | static int ie_RELEASE[] = {IE_CAUSE | IE_MANDATORY_1, IE_FACILITY, IE_DISPLAY, |
475be4d8 JP |
612 | IE_SIGNAL, IE_USER_USER, -1}; |
613 | /* a RELEASE_COMPLETE with errors don't require special actions | |
614 | static int ie_RELEASE_COMPLETE[] = {IE_CAUSE | IE_MANDATORY_1, IE_DISPLAY, IE_SIGNAL, IE_USER_USER, -1}; | |
1da177e4 | 615 | */ |
475be4d8 JP |
616 | static int ie_RESUME_ACKNOWLEDGE[] = {IE_CHANNEL_ID | IE_MANDATORY, IE_FACILITY, |
617 | IE_DISPLAY, -1}; | |
1da177e4 LT |
618 | static int ie_RESUME_REJECT[] = {IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1}; |
619 | static int ie_SETUP[] = {IE_COMPLETE, IE_BEARER | IE_MANDATORY, | |
475be4d8 JP |
620 | IE_CHANNEL_ID | IE_MANDATORY, IE_FACILITY, IE_PROGRESS, |
621 | IE_NET_FAC, IE_DISPLAY, IE_KEYPAD, IE_SIGNAL, IE_CALLING_PN, | |
622 | IE_CALLING_SUB, IE_CALLED_PN, IE_CALLED_SUB, IE_REDIR_NR, | |
623 | IE_LLC, IE_HLC, IE_USER_USER, -1}; | |
1da177e4 | 624 | static int ie_SETUP_ACKNOWLEDGE[] = {IE_CHANNEL_ID | IE_MANDATORY, IE_FACILITY, |
475be4d8 | 625 | IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, -1}; |
1da177e4 | 626 | static int ie_STATUS[] = {IE_CAUSE | IE_MANDATORY, IE_CALL_STATE | |
475be4d8 | 627 | IE_MANDATORY, IE_DISPLAY, -1}; |
1da177e4 LT |
628 | static int ie_STATUS_ENQUIRY[] = {IE_DISPLAY, -1}; |
629 | static int ie_SUSPEND_ACKNOWLEDGE[] = {IE_DISPLAY, IE_FACILITY, -1}; | |
630 | static int ie_SUSPEND_REJECT[] = {IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1}; | |
475be4d8 | 631 | /* not used |
1da177e4 LT |
632 | * static int ie_CONGESTION_CONTROL[] = {IE_CONGESTION | IE_MANDATORY, |
633 | * IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1}; | |
634 | * static int ie_USER_INFORMATION[] = {IE_MORE_DATA, IE_USER_USER | IE_MANDATORY, -1}; | |
635 | * static int ie_RESTART[] = {IE_CHANNEL_ID, IE_DISPLAY, IE_RESTART_IND | | |
636 | * IE_MANDATORY, -1}; | |
637 | */ | |
638 | static int ie_FACILITY[] = {IE_FACILITY | IE_MANDATORY, IE_DISPLAY, -1}; | |
475be4d8 JP |
639 | static int comp_required[] = {1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, -1}; |
640 | static int l3_valid_states[] = {0, 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 15, 17, 19, 25, -1}; | |
1da177e4 LT |
641 | |
642 | struct ie_len { | |
643 | int ie; | |
644 | int len; | |
645 | }; | |
646 | ||
647 | static | |
648 | struct ie_len max_ie_len[] = { | |
649 | {IE_SEGMENT, 4}, | |
650 | {IE_BEARER, 12}, | |
651 | {IE_CAUSE, 32}, | |
652 | {IE_CALL_ID, 10}, | |
653 | {IE_CALL_STATE, 3}, | |
654 | {IE_CHANNEL_ID, 34}, | |
655 | {IE_FACILITY, 255}, | |
656 | {IE_PROGRESS, 4}, | |
657 | {IE_NET_FAC, 255}, | |
658 | {IE_NOTIFY, 3}, | |
659 | {IE_DISPLAY, 82}, | |
660 | {IE_DATE, 8}, | |
661 | {IE_KEYPAD, 34}, | |
662 | {IE_SIGNAL, 3}, | |
663 | {IE_INFORATE, 6}, | |
664 | {IE_E2E_TDELAY, 11}, | |
665 | {IE_TDELAY_SEL, 5}, | |
666 | {IE_PACK_BINPARA, 3}, | |
667 | {IE_PACK_WINSIZE, 4}, | |
668 | {IE_PACK_SIZE, 4}, | |
669 | {IE_CUG, 7}, | |
670 | {IE_REV_CHARGE, 3}, | |
671 | {IE_CALLING_PN, 24}, | |
672 | {IE_CALLING_SUB, 23}, | |
673 | {IE_CALLED_PN, 24}, | |
674 | {IE_CALLED_SUB, 23}, | |
675 | {IE_REDIR_NR, 255}, | |
676 | {IE_TRANS_SEL, 255}, | |
677 | {IE_RESTART_IND, 3}, | |
678 | {IE_LLC, 18}, | |
679 | {IE_HLC, 5}, | |
680 | {IE_USER_USER, 131}, | |
475be4d8 | 681 | {-1, 0}, |
1da177e4 LT |
682 | }; |
683 | ||
684 | static int | |
685 | getmax_ie_len(u_char ie) { | |
686 | int i = 0; | |
687 | while (max_ie_len[i].ie != -1) { | |
688 | if (max_ie_len[i].ie == ie) | |
475be4d8 | 689 | return (max_ie_len[i].len); |
1da177e4 LT |
690 | i++; |
691 | } | |
475be4d8 | 692 | return (255); |
1da177e4 LT |
693 | } |
694 | ||
695 | static int | |
696 | ie_in_set(struct l3_process *pc, u_char ie, int *checklist) { | |
697 | int ret = 1; | |
698 | ||
699 | while (*checklist != -1) { | |
700 | if ((*checklist & 0xff) == ie) { | |
701 | if (ie & 0x80) | |
475be4d8 | 702 | return (-ret); |
1da177e4 | 703 | else |
475be4d8 | 704 | return (ret); |
1da177e4 LT |
705 | } |
706 | ret++; | |
707 | checklist++; | |
708 | } | |
475be4d8 | 709 | return (0); |
1da177e4 LT |
710 | } |
711 | ||
712 | static int | |
713 | check_infoelements(struct l3_process *pc, struct sk_buff *skb, int *checklist) | |
714 | { | |
715 | int *cl = checklist; | |
716 | u_char mt; | |
717 | u_char *p, ie; | |
718 | int l, newpos, oldpos; | |
719 | int err_seq = 0, err_len = 0, err_compr = 0, err_ureg = 0; | |
720 | u_char codeset = 0; | |
721 | u_char old_codeset = 0; | |
722 | u_char codelock = 1; | |
475be4d8 | 723 | |
1da177e4 LT |
724 | p = skb->data; |
725 | /* skip cr */ | |
726 | p++; | |
727 | l = (*p++) & 0xf; | |
728 | p += l; | |
729 | mt = *p++; | |
730 | oldpos = 0; | |
731 | while ((p - skb->data) < skb->len) { | |
732 | if ((*p & 0xf0) == 0x90) { /* shift codeset */ | |
733 | old_codeset = codeset; | |
734 | codeset = *p & 7; | |
735 | if (*p & 0x08) | |
736 | codelock = 0; | |
737 | else | |
738 | codelock = 1; | |
739 | if (pc->debug & L3_DEB_CHECK) | |
740 | l3_debug(pc->st, "check IE shift%scodeset %d->%d", | |
475be4d8 | 741 | codelock ? " locking " : " ", old_codeset, codeset); |
1da177e4 LT |
742 | p++; |
743 | continue; | |
744 | } | |
745 | if (!codeset) { /* only codeset 0 */ | |
746 | if ((newpos = ie_in_set(pc, *p, cl))) { | |
747 | if (newpos > 0) { | |
748 | if (newpos < oldpos) | |
749 | err_seq++; | |
750 | else | |
751 | oldpos = newpos; | |
752 | } | |
753 | } else { | |
754 | if (ie_in_set(pc, *p, comp_required)) | |
755 | err_compr++; | |
756 | else | |
757 | err_ureg++; | |
758 | } | |
759 | } | |
760 | ie = *p++; | |
761 | if (ie & 0x80) { | |
762 | l = 1; | |
763 | } else { | |
764 | l = *p++; | |
765 | p += l; | |
766 | l += 2; | |
767 | } | |
768 | if (!codeset && (l > getmax_ie_len(ie))) | |
769 | err_len++; | |
770 | if (!codelock) { | |
771 | if (pc->debug & L3_DEB_CHECK) | |
772 | l3_debug(pc->st, "check IE shift back codeset %d->%d", | |
475be4d8 | 773 | codeset, old_codeset); |
1da177e4 LT |
774 | codeset = old_codeset; |
775 | codelock = 1; | |
776 | } | |
777 | } | |
778 | if (err_compr | err_ureg | err_len | err_seq) { | |
779 | if (pc->debug & L3_DEB_CHECK) | |
780 | l3_debug(pc->st, "check IE MT(%x) %d/%d/%d/%d", | |
475be4d8 | 781 | mt, err_compr, err_ureg, err_len, err_seq); |
1da177e4 | 782 | if (err_compr) |
475be4d8 | 783 | return (ERR_IE_COMPREHENSION); |
1da177e4 | 784 | if (err_ureg) |
475be4d8 | 785 | return (ERR_IE_UNRECOGNIZED); |
1da177e4 | 786 | if (err_len) |
475be4d8 | 787 | return (ERR_IE_LENGTH); |
1da177e4 | 788 | if (err_seq) |
475be4d8 JP |
789 | return (ERR_IE_SEQUENCE); |
790 | } | |
791 | return (0); | |
1da177e4 LT |
792 | } |
793 | ||
794 | /* verify if a message type exists and contain no IE error */ | |
795 | static int | |
796 | l3dss1_check_messagetype_validity(struct l3_process *pc, int mt, void *arg) | |
797 | { | |
798 | switch (mt) { | |
475be4d8 JP |
799 | case MT_ALERTING: |
800 | case MT_CALL_PROCEEDING: | |
801 | case MT_CONNECT: | |
802 | case MT_CONNECT_ACKNOWLEDGE: | |
803 | case MT_DISCONNECT: | |
804 | case MT_INFORMATION: | |
805 | case MT_FACILITY: | |
806 | case MT_NOTIFY: | |
807 | case MT_PROGRESS: | |
808 | case MT_RELEASE: | |
809 | case MT_RELEASE_COMPLETE: | |
810 | case MT_SETUP: | |
811 | case MT_SETUP_ACKNOWLEDGE: | |
812 | case MT_RESUME_ACKNOWLEDGE: | |
813 | case MT_RESUME_REJECT: | |
814 | case MT_SUSPEND_ACKNOWLEDGE: | |
815 | case MT_SUSPEND_REJECT: | |
816 | case MT_USER_INFORMATION: | |
817 | case MT_RESTART: | |
818 | case MT_RESTART_ACKNOWLEDGE: | |
819 | case MT_CONGESTION_CONTROL: | |
820 | case MT_STATUS: | |
821 | case MT_STATUS_ENQUIRY: | |
822 | if (pc->debug & L3_DEB_CHECK) | |
823 | l3_debug(pc->st, "l3dss1_check_messagetype_validity mt(%x) OK", mt); | |
824 | break; | |
825 | case MT_RESUME: /* RESUME only in user->net */ | |
826 | case MT_SUSPEND: /* SUSPEND only in user->net */ | |
827 | default: | |
828 | if (pc->debug & (L3_DEB_CHECK | L3_DEB_WARN)) | |
829 | l3_debug(pc->st, "l3dss1_check_messagetype_validity mt(%x) fail", mt); | |
830 | pc->para.cause = 97; | |
831 | l3dss1_status_send(pc, 0, NULL); | |
832 | return (1); | |
1da177e4 | 833 | } |
475be4d8 | 834 | return (0); |
1da177e4 LT |
835 | } |
836 | ||
837 | static void | |
838 | l3dss1_std_ie_err(struct l3_process *pc, int ret) { | |
839 | ||
840 | if (pc->debug & L3_DEB_CHECK) | |
841 | l3_debug(pc->st, "check_infoelements ret %d", ret); | |
475be4d8 JP |
842 | switch (ret) { |
843 | case 0: | |
844 | break; | |
845 | case ERR_IE_COMPREHENSION: | |
846 | pc->para.cause = 96; | |
847 | l3dss1_status_send(pc, 0, NULL); | |
848 | break; | |
849 | case ERR_IE_UNRECOGNIZED: | |
850 | pc->para.cause = 99; | |
851 | l3dss1_status_send(pc, 0, NULL); | |
852 | break; | |
853 | case ERR_IE_LENGTH: | |
854 | pc->para.cause = 100; | |
855 | l3dss1_status_send(pc, 0, NULL); | |
856 | break; | |
857 | case ERR_IE_SEQUENCE: | |
858 | default: | |
859 | break; | |
1da177e4 LT |
860 | } |
861 | } | |
862 | ||
863 | static int | |
864 | l3dss1_get_channel_id(struct l3_process *pc, struct sk_buff *skb) { | |
865 | u_char *p; | |
866 | ||
867 | p = skb->data; | |
868 | if ((p = findie(p, skb->len, IE_CHANNEL_ID, 0))) { | |
869 | p++; | |
870 | if (*p != 1) { /* len for BRI = 1 */ | |
871 | if (pc->debug & L3_DEB_WARN) | |
872 | l3_debug(pc->st, "wrong chid len %d", *p); | |
873 | return (-2); | |
874 | } | |
875 | p++; | |
876 | if (*p & 0x60) { /* only base rate interface */ | |
877 | if (pc->debug & L3_DEB_WARN) | |
878 | l3_debug(pc->st, "wrong chid %x", *p); | |
879 | return (-3); | |
880 | } | |
475be4d8 | 881 | return (*p & 0x3); |
1da177e4 | 882 | } else |
475be4d8 | 883 | return (-1); |
1da177e4 LT |
884 | } |
885 | ||
886 | static int | |
887 | l3dss1_get_cause(struct l3_process *pc, struct sk_buff *skb) { | |
475be4d8 | 888 | u_char l, i = 0; |
1da177e4 LT |
889 | u_char *p; |
890 | ||
891 | p = skb->data; | |
892 | pc->para.cause = 31; | |
893 | pc->para.loc = 0; | |
894 | if ((p = findie(p, skb->len, IE_CAUSE, 0))) { | |
895 | p++; | |
896 | l = *p++; | |
475be4d8 JP |
897 | if (l > 30) |
898 | return (1); | |
1da177e4 LT |
899 | if (l) { |
900 | pc->para.loc = *p++; | |
901 | l--; | |
902 | } else { | |
475be4d8 | 903 | return (2); |
1da177e4 LT |
904 | } |
905 | if (l && !(pc->para.loc & 0x80)) { | |
906 | l--; | |
907 | p++; /* skip recommendation */ | |
908 | } | |
909 | if (l) { | |
910 | pc->para.cause = *p++; | |
911 | l--; | |
912 | if (!(pc->para.cause & 0x80)) | |
475be4d8 | 913 | return (3); |
1da177e4 | 914 | } else |
475be4d8 JP |
915 | return (4); |
916 | while (l && (i < 6)) { | |
1da177e4 LT |
917 | pc->para.diag[i++] = *p++; |
918 | l--; | |
919 | } | |
920 | } else | |
475be4d8 JP |
921 | return (-1); |
922 | return (0); | |
1da177e4 LT |
923 | } |
924 | ||
925 | static void | |
926 | l3dss1_msg_with_uus(struct l3_process *pc, u_char cmd) | |
927 | { | |
928 | struct sk_buff *skb; | |
475be4d8 | 929 | u_char tmp[16 + 40]; |
1da177e4 LT |
930 | u_char *p = tmp; |
931 | int l; | |
932 | ||
933 | MsgHead(p, pc->callref, cmd); | |
934 | ||
475be4d8 JP |
935 | if (pc->prot.dss1.uus1_data[0]) |
936 | { *p++ = IE_USER_USER; /* UUS info element */ | |
937 | *p++ = strlen(pc->prot.dss1.uus1_data) + 1; | |
938 | *p++ = 0x04; /* IA5 chars */ | |
939 | strcpy(p, pc->prot.dss1.uus1_data); | |
940 | p += strlen(pc->prot.dss1.uus1_data); | |
941 | pc->prot.dss1.uus1_data[0] = '\0'; | |
942 | } | |
1da177e4 LT |
943 | |
944 | l = p - tmp; | |
945 | if (!(skb = l3_alloc_skb(l))) | |
946 | return; | |
947 | memcpy(skb_put(skb, l), tmp, l); | |
948 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
949 | } /* l3dss1_msg_with_uus */ | |
950 | ||
951 | static void | |
952 | l3dss1_release_req(struct l3_process *pc, u_char pr, void *arg) | |
953 | { | |
954 | StopAllL3Timer(pc); | |
955 | newl3state(pc, 19); | |
475be4d8 | 956 | if (!pc->prot.dss1.uus1_data[0]) |
1da177e4 LT |
957 | l3dss1_message(pc, MT_RELEASE); |
958 | else | |
959 | l3dss1_msg_with_uus(pc, MT_RELEASE); | |
960 | L3AddTimer(&pc->timer, T308, CC_T308_1); | |
961 | } | |
962 | ||
963 | static void | |
964 | l3dss1_release_cmpl(struct l3_process *pc, u_char pr, void *arg) | |
965 | { | |
966 | struct sk_buff *skb = arg; | |
967 | int ret; | |
968 | ||
475be4d8 | 969 | if ((ret = l3dss1_get_cause(pc, skb)) > 0) { |
1da177e4 | 970 | if (pc->debug & L3_DEB_WARN) |
475be4d8 | 971 | l3_debug(pc->st, "RELCMPL get_cause ret(%d)", ret); |
1da177e4 LT |
972 | } else if (ret < 0) |
973 | pc->para.cause = NO_CAUSE; | |
974 | StopAllL3Timer(pc); | |
975 | newl3state(pc, 0); | |
976 | pc->st->l3.l3l4(pc->st, CC_RELEASE | CONFIRM, pc); | |
977 | dss1_release_l3_process(pc); | |
978 | } | |
979 | ||
44456d37 | 980 | #ifdef EXT_BEARER_CAPS |
1da177e4 LT |
981 | |
982 | static u_char * | |
475be4d8 | 983 | EncodeASyncParams(u_char *p, u_char si2) |
1da177e4 LT |
984 | { // 7c 06 88 90 21 42 00 bb |
985 | ||
986 | p[0] = 0; | |
987 | p[1] = 0x40; // Intermediate rate: 16 kbit/s jj 2000.02.19 | |
988 | p[2] = 0x80; | |
989 | if (si2 & 32) // 7 data bits | |
990 | ||
991 | p[2] += 16; | |
992 | else // 8 data bits | |
993 | ||
994 | p[2] += 24; | |
995 | ||
996 | if (si2 & 16) // 2 stop bits | |
997 | ||
998 | p[2] += 96; | |
999 | else // 1 stop bit | |
1000 | ||
1001 | p[2] += 32; | |
1002 | ||
1003 | if (si2 & 8) // even parity | |
1004 | ||
1005 | p[2] += 2; | |
1006 | else // no parity | |
1007 | ||
1008 | p[2] += 3; | |
1009 | ||
1010 | switch (si2 & 0x07) { | |
475be4d8 JP |
1011 | case 0: |
1012 | p[0] = 66; // 1200 bit/s | |
1da177e4 | 1013 | |
475be4d8 JP |
1014 | break; |
1015 | case 1: | |
1016 | p[0] = 88; // 1200/75 bit/s | |
1da177e4 | 1017 | |
475be4d8 JP |
1018 | break; |
1019 | case 2: | |
1020 | p[0] = 87; // 75/1200 bit/s | |
1da177e4 | 1021 | |
475be4d8 JP |
1022 | break; |
1023 | case 3: | |
1024 | p[0] = 67; // 2400 bit/s | |
1da177e4 | 1025 | |
475be4d8 JP |
1026 | break; |
1027 | case 4: | |
1028 | p[0] = 69; // 4800 bit/s | |
1da177e4 | 1029 | |
475be4d8 JP |
1030 | break; |
1031 | case 5: | |
1032 | p[0] = 72; // 9600 bit/s | |
1da177e4 | 1033 | |
475be4d8 JP |
1034 | break; |
1035 | case 6: | |
1036 | p[0] = 73; // 14400 bit/s | |
1da177e4 | 1037 | |
475be4d8 JP |
1038 | break; |
1039 | case 7: | |
1040 | p[0] = 75; // 19200 bit/s | |
1da177e4 | 1041 | |
475be4d8 | 1042 | break; |
1da177e4 LT |
1043 | } |
1044 | return p + 3; | |
1045 | } | |
1046 | ||
1047 | static u_char | |
1048 | EncodeSyncParams(u_char si2, u_char ai) | |
1049 | { | |
1050 | ||
1051 | switch (si2) { | |
475be4d8 JP |
1052 | case 0: |
1053 | return ai + 2; // 1200 bit/s | |
1da177e4 | 1054 | |
475be4d8 JP |
1055 | case 1: |
1056 | return ai + 24; // 1200/75 bit/s | |
1da177e4 | 1057 | |
475be4d8 JP |
1058 | case 2: |
1059 | return ai + 23; // 75/1200 bit/s | |
1da177e4 | 1060 | |
475be4d8 JP |
1061 | case 3: |
1062 | return ai + 3; // 2400 bit/s | |
1da177e4 | 1063 | |
475be4d8 JP |
1064 | case 4: |
1065 | return ai + 5; // 4800 bit/s | |
1da177e4 | 1066 | |
475be4d8 JP |
1067 | case 5: |
1068 | return ai + 8; // 9600 bit/s | |
1da177e4 | 1069 | |
475be4d8 JP |
1070 | case 6: |
1071 | return ai + 9; // 14400 bit/s | |
1da177e4 | 1072 | |
475be4d8 JP |
1073 | case 7: |
1074 | return ai + 11; // 19200 bit/s | |
1da177e4 | 1075 | |
475be4d8 JP |
1076 | case 8: |
1077 | return ai + 14; // 48000 bit/s | |
1da177e4 | 1078 | |
475be4d8 JP |
1079 | case 9: |
1080 | return ai + 15; // 56000 bit/s | |
1da177e4 | 1081 | |
475be4d8 JP |
1082 | case 15: |
1083 | return ai + 40; // negotiate bit/s | |
1da177e4 | 1084 | |
475be4d8 JP |
1085 | default: |
1086 | break; | |
1da177e4 LT |
1087 | } |
1088 | return ai; | |
1089 | } | |
1090 | ||
1091 | ||
1092 | static u_char | |
475be4d8 | 1093 | DecodeASyncParams(u_char si2, u_char *p) |
1da177e4 LT |
1094 | { |
1095 | u_char info; | |
1096 | ||
1097 | switch (p[5]) { | |
475be4d8 | 1098 | case 66: // 1200 bit/s |
1da177e4 | 1099 | |
475be4d8 | 1100 | break; // si2 don't change |
1da177e4 | 1101 | |
475be4d8 | 1102 | case 88: // 1200/75 bit/s |
1da177e4 | 1103 | |
475be4d8 JP |
1104 | si2 += 1; |
1105 | break; | |
1106 | case 87: // 75/1200 bit/s | |
1da177e4 | 1107 | |
475be4d8 JP |
1108 | si2 += 2; |
1109 | break; | |
1110 | case 67: // 2400 bit/s | |
1da177e4 | 1111 | |
475be4d8 JP |
1112 | si2 += 3; |
1113 | break; | |
1114 | case 69: // 4800 bit/s | |
1da177e4 | 1115 | |
475be4d8 JP |
1116 | si2 += 4; |
1117 | break; | |
1118 | case 72: // 9600 bit/s | |
1da177e4 | 1119 | |
475be4d8 JP |
1120 | si2 += 5; |
1121 | break; | |
1122 | case 73: // 14400 bit/s | |
1da177e4 | 1123 | |
475be4d8 JP |
1124 | si2 += 6; |
1125 | break; | |
1126 | case 75: // 19200 bit/s | |
1da177e4 | 1127 | |
475be4d8 JP |
1128 | si2 += 7; |
1129 | break; | |
1da177e4 LT |
1130 | } |
1131 | ||
1132 | info = p[7] & 0x7f; | |
1133 | if ((info & 16) && (!(info & 8))) // 7 data bits | |
1134 | ||
1135 | si2 += 32; // else 8 data bits | |
1136 | ||
1137 | if ((info & 96) == 96) // 2 stop bits | |
1138 | ||
1139 | si2 += 16; // else 1 stop bit | |
1140 | ||
1141 | if ((info & 2) && (!(info & 1))) // even parity | |
1142 | ||
1143 | si2 += 8; // else no parity | |
1144 | ||
1145 | return si2; | |
1146 | } | |
1147 | ||
1148 | ||
1149 | static u_char | |
1150 | DecodeSyncParams(u_char si2, u_char info) | |
1151 | { | |
1152 | info &= 0x7f; | |
1153 | switch (info) { | |
475be4d8 | 1154 | case 40: // bit/s negotiation failed ai := 165 not 175! |
1da177e4 | 1155 | |
475be4d8 JP |
1156 | return si2 + 15; |
1157 | case 15: // 56000 bit/s failed, ai := 0 not 169 ! | |
1da177e4 | 1158 | |
475be4d8 JP |
1159 | return si2 + 9; |
1160 | case 14: // 48000 bit/s | |
1da177e4 | 1161 | |
475be4d8 JP |
1162 | return si2 + 8; |
1163 | case 11: // 19200 bit/s | |
1da177e4 | 1164 | |
475be4d8 JP |
1165 | return si2 + 7; |
1166 | case 9: // 14400 bit/s | |
1da177e4 | 1167 | |
475be4d8 JP |
1168 | return si2 + 6; |
1169 | case 8: // 9600 bit/s | |
1da177e4 | 1170 | |
475be4d8 JP |
1171 | return si2 + 5; |
1172 | case 5: // 4800 bit/s | |
1da177e4 | 1173 | |
475be4d8 JP |
1174 | return si2 + 4; |
1175 | case 3: // 2400 bit/s | |
1da177e4 | 1176 | |
475be4d8 JP |
1177 | return si2 + 3; |
1178 | case 23: // 75/1200 bit/s | |
1da177e4 | 1179 | |
475be4d8 JP |
1180 | return si2 + 2; |
1181 | case 24: // 1200/75 bit/s | |
1da177e4 | 1182 | |
475be4d8 JP |
1183 | return si2 + 1; |
1184 | default: // 1200 bit/s | |
1da177e4 | 1185 | |
475be4d8 | 1186 | return si2; |
1da177e4 LT |
1187 | } |
1188 | } | |
1189 | ||
1190 | static u_char | |
1191 | DecodeSI2(struct sk_buff *skb) | |
1192 | { | |
1193 | u_char *p; //, *pend=skb->data + skb->len; | |
1194 | ||
1195 | if ((p = findie(skb->data, skb->len, 0x7c, 0))) { | |
1196 | switch (p[4] & 0x0f) { | |
475be4d8 JP |
1197 | case 0x01: |
1198 | if (p[1] == 0x04) // sync. Bitratenadaption | |
1da177e4 | 1199 | |
475be4d8 | 1200 | return DecodeSyncParams(160, p[5]); // V.110/X.30 |
1da177e4 | 1201 | |
475be4d8 | 1202 | else if (p[1] == 0x06) // async. Bitratenadaption |
1da177e4 | 1203 | |
475be4d8 | 1204 | return DecodeASyncParams(192, p); // V.110/X.30 |
1da177e4 | 1205 | |
475be4d8 JP |
1206 | break; |
1207 | case 0x08: // if (p[5] == 0x02) // sync. Bitratenadaption | |
1208 | if (p[1] > 3) | |
1209 | return DecodeSyncParams(176, p[5]); // V.120 | |
1210 | break; | |
1da177e4 LT |
1211 | } |
1212 | } | |
1213 | return 0; | |
1214 | } | |
1215 | ||
1216 | #endif | |
1217 | ||
1218 | ||
1219 | static void | |
1220 | l3dss1_setup_req(struct l3_process *pc, u_char pr, | |
1221 | void *arg) | |
1222 | { | |
1223 | struct sk_buff *skb; | |
1224 | u_char tmp[128]; | |
1225 | u_char *p = tmp; | |
1226 | u_char channel = 0; | |
1227 | ||
475be4d8 | 1228 | u_char send_keypad; |
1da177e4 LT |
1229 | u_char screen = 0x80; |
1230 | u_char *teln; | |
1231 | u_char *msn; | |
1232 | u_char *sub; | |
1233 | u_char *sp; | |
1234 | int l; | |
1235 | ||
1236 | MsgHead(p, pc->callref, MT_SETUP); | |
1237 | ||
1238 | teln = pc->para.setup.phone; | |
1239 | #ifndef CONFIG_HISAX_NO_KEYPAD | |
475be4d8 | 1240 | send_keypad = (strchr(teln, '*') || strchr(teln, '#')) ? 1 : 0; |
1da177e4 LT |
1241 | #else |
1242 | send_keypad = 0; | |
1243 | #endif | |
1244 | #ifndef CONFIG_HISAX_NO_SENDCOMPLETE | |
1245 | if (!send_keypad) | |
1246 | *p++ = 0xa1; /* complete indicator */ | |
1247 | #endif | |
1248 | /* | |
1249 | * Set Bearer Capability, Map info from 1TR6-convention to EDSS1 | |
1250 | */ | |
1251 | switch (pc->para.setup.si1) { | |
1252 | case 1: /* Telephony */ | |
1253 | *p++ = IE_BEARER; | |
1254 | *p++ = 0x3; /* Length */ | |
1255 | *p++ = 0x90; /* Coding Std. CCITT, 3.1 kHz audio */ | |
1256 | *p++ = 0x90; /* Circuit-Mode 64kbps */ | |
1257 | *p++ = 0xa3; /* A-Law Audio */ | |
1258 | break; | |
1259 | case 5: /* Datatransmission 64k, BTX */ | |
1260 | case 7: /* Datatransmission 64k */ | |
1261 | default: | |
1262 | *p++ = IE_BEARER; | |
1263 | *p++ = 0x2; /* Length */ | |
1264 | *p++ = 0x88; /* Coding Std. CCITT, unrestr. dig. Inform. */ | |
1265 | *p++ = 0x90; /* Circuit-Mode 64kbps */ | |
1266 | break; | |
1267 | } | |
1268 | ||
1269 | if (send_keypad) { | |
1270 | *p++ = IE_KEYPAD; | |
1271 | *p++ = strlen(teln); | |
1272 | while (*teln) | |
1273 | *p++ = (*teln++) & 0x7F; | |
1274 | } | |
475be4d8 | 1275 | |
1da177e4 LT |
1276 | /* |
1277 | * What about info2? Mapping to High-Layer-Compatibility? | |
1278 | */ | |
1279 | if ((*teln) && (!send_keypad)) { | |
1280 | /* parse number for special things */ | |
1281 | if (!isdigit(*teln)) { | |
1282 | switch (0x5f & *teln) { | |
475be4d8 JP |
1283 | case 'C': |
1284 | channel = 0x08; | |
1285 | case 'P': | |
1286 | channel |= 0x80; | |
1287 | teln++; | |
1288 | if (*teln == '1') | |
1289 | channel |= 0x01; | |
1290 | else | |
1291 | channel |= 0x02; | |
1292 | break; | |
1293 | case 'R': | |
1294 | screen = 0xA0; | |
1295 | break; | |
1296 | case 'D': | |
1297 | screen = 0x80; | |
1298 | break; | |
1299 | ||
1300 | default: | |
1301 | if (pc->debug & L3_DEB_WARN) | |
1302 | l3_debug(pc->st, "Wrong MSN Code"); | |
1303 | break; | |
1da177e4 LT |
1304 | } |
1305 | teln++; | |
1306 | } | |
1307 | } | |
1308 | if (channel) { | |
1309 | *p++ = IE_CHANNEL_ID; | |
1310 | *p++ = 1; | |
1311 | *p++ = channel; | |
1312 | } | |
1313 | msn = pc->para.setup.eazmsn; | |
1314 | sub = NULL; | |
1315 | sp = msn; | |
1316 | while (*sp) { | |
1317 | if ('.' == *sp) { | |
1318 | sub = sp; | |
1319 | *sp = 0; | |
1320 | } else | |
1321 | sp++; | |
1322 | } | |
1323 | if (*msn) { | |
1324 | *p++ = IE_CALLING_PN; | |
1325 | *p++ = strlen(msn) + (screen ? 2 : 1); | |
1326 | /* Classify as AnyPref. */ | |
1327 | if (screen) { | |
1328 | *p++ = 0x01; /* Ext = '0'B, Type = '000'B, Plan = '0001'B. */ | |
1329 | *p++ = screen; | |
1330 | } else | |
1331 | *p++ = 0x81; /* Ext = '1'B, Type = '000'B, Plan = '0001'B. */ | |
1332 | while (*msn) | |
1333 | *p++ = *msn++ & 0x7f; | |
1334 | } | |
1335 | if (sub) { | |
1336 | *sub++ = '.'; | |
1337 | *p++ = IE_CALLING_SUB; | |
1338 | *p++ = strlen(sub) + 2; | |
1339 | *p++ = 0x80; /* NSAP coded */ | |
1340 | *p++ = 0x50; /* local IDI format */ | |
1341 | while (*sub) | |
1342 | *p++ = *sub++ & 0x7f; | |
1343 | } | |
1344 | sub = NULL; | |
1345 | sp = teln; | |
1346 | while (*sp) { | |
1347 | if ('.' == *sp) { | |
1348 | sub = sp; | |
1349 | *sp = 0; | |
1350 | } else | |
1351 | sp++; | |
1352 | } | |
475be4d8 JP |
1353 | |
1354 | if (!send_keypad) { | |
1da177e4 LT |
1355 | *p++ = IE_CALLED_PN; |
1356 | *p++ = strlen(teln) + 1; | |
1357 | /* Classify as AnyPref. */ | |
1358 | *p++ = 0x81; /* Ext = '1'B, Type = '000'B, Plan = '0001'B. */ | |
1359 | while (*teln) | |
1360 | *p++ = *teln++ & 0x7f; | |
475be4d8 | 1361 | |
1da177e4 LT |
1362 | if (sub) { |
1363 | *sub++ = '.'; | |
1364 | *p++ = IE_CALLED_SUB; | |
1365 | *p++ = strlen(sub) + 2; | |
1366 | *p++ = 0x80; /* NSAP coded */ | |
1367 | *p++ = 0x50; /* local IDI format */ | |
1368 | while (*sub) | |
1369 | *p++ = *sub++ & 0x7f; | |
1370 | } | |
475be4d8 | 1371 | } |
44456d37 | 1372 | #ifdef EXT_BEARER_CAPS |
1da177e4 LT |
1373 | if ((pc->para.setup.si2 >= 160) && (pc->para.setup.si2 <= 175)) { // sync. Bitratenadaption, V.110/X.30 |
1374 | ||
1375 | *p++ = IE_LLC; | |
1376 | *p++ = 0x04; | |
1377 | *p++ = 0x88; | |
1378 | *p++ = 0x90; | |
1379 | *p++ = 0x21; | |
1380 | *p++ = EncodeSyncParams(pc->para.setup.si2 - 160, 0x80); | |
1381 | } else if ((pc->para.setup.si2 >= 176) && (pc->para.setup.si2 <= 191)) { // sync. Bitratenadaption, V.120 | |
1382 | ||
1383 | *p++ = IE_LLC; | |
1384 | *p++ = 0x05; | |
1385 | *p++ = 0x88; | |
1386 | *p++ = 0x90; | |
1387 | *p++ = 0x28; | |
1388 | *p++ = EncodeSyncParams(pc->para.setup.si2 - 176, 0); | |
1389 | *p++ = 0x82; | |
1390 | } else if (pc->para.setup.si2 >= 192) { // async. Bitratenadaption, V.110/X.30 | |
1391 | ||
1392 | *p++ = IE_LLC; | |
1393 | *p++ = 0x06; | |
1394 | *p++ = 0x88; | |
1395 | *p++ = 0x90; | |
1396 | *p++ = 0x21; | |
1397 | p = EncodeASyncParams(p, pc->para.setup.si2 - 192); | |
1398 | #ifndef CONFIG_HISAX_NO_LLC | |
1399 | } else { | |
475be4d8 | 1400 | switch (pc->para.setup.si1) { |
1da177e4 LT |
1401 | case 1: /* Telephony */ |
1402 | *p++ = IE_LLC; | |
1403 | *p++ = 0x3; /* Length */ | |
1404 | *p++ = 0x90; /* Coding Std. CCITT, 3.1 kHz audio */ | |
1405 | *p++ = 0x90; /* Circuit-Mode 64kbps */ | |
1406 | *p++ = 0xa3; /* A-Law Audio */ | |
1407 | break; | |
1408 | case 5: /* Datatransmission 64k, BTX */ | |
1409 | case 7: /* Datatransmission 64k */ | |
1410 | default: | |
1411 | *p++ = IE_LLC; | |
1412 | *p++ = 0x2; /* Length */ | |
1413 | *p++ = 0x88; /* Coding Std. CCITT, unrestr. dig. Inform. */ | |
1414 | *p++ = 0x90; /* Circuit-Mode 64kbps */ | |
1415 | break; | |
475be4d8 | 1416 | } |
1da177e4 LT |
1417 | #endif |
1418 | } | |
1419 | #endif | |
1420 | l = p - tmp; | |
1421 | if (!(skb = l3_alloc_skb(l))) | |
1422 | return; | |
1423 | memcpy(skb_put(skb, l), tmp, l); | |
1424 | L3DelTimer(&pc->timer); | |
1425 | L3AddTimer(&pc->timer, T303, CC_T303); | |
1426 | newl3state(pc, 1); | |
1427 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
1428 | } | |
1429 | ||
1430 | static void | |
1431 | l3dss1_call_proc(struct l3_process *pc, u_char pr, void *arg) | |
1432 | { | |
1433 | struct sk_buff *skb = arg; | |
1434 | int id, ret; | |
1435 | ||
1436 | if ((id = l3dss1_get_channel_id(pc, skb)) >= 0) { | |
1437 | if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) { | |
1438 | if (pc->debug & L3_DEB_WARN) | |
1439 | l3_debug(pc->st, "setup answer with wrong chid %x", id); | |
1440 | pc->para.cause = 100; | |
1441 | l3dss1_status_send(pc, pr, NULL); | |
1442 | return; | |
1443 | } | |
1444 | pc->para.bchannel = id; | |
1445 | } else if (1 == pc->state) { | |
1446 | if (pc->debug & L3_DEB_WARN) | |
1447 | l3_debug(pc->st, "setup answer wrong chid (ret %d)", id); | |
1448 | if (id == -1) | |
1449 | pc->para.cause = 96; | |
1450 | else | |
1451 | pc->para.cause = 100; | |
1452 | l3dss1_status_send(pc, pr, NULL); | |
1453 | return; | |
1454 | } | |
1455 | /* Now we are on none mandatory IEs */ | |
1456 | ret = check_infoelements(pc, skb, ie_CALL_PROCEEDING); | |
1457 | if (ERR_IE_COMPREHENSION == ret) { | |
1458 | l3dss1_std_ie_err(pc, ret); | |
1459 | return; | |
1460 | } | |
1461 | L3DelTimer(&pc->timer); | |
1462 | newl3state(pc, 3); | |
1463 | L3AddTimer(&pc->timer, T310, CC_T310); | |
1464 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
1465 | l3dss1_std_ie_err(pc, ret); | |
1466 | pc->st->l3.l3l4(pc->st, CC_PROCEEDING | INDICATION, pc); | |
1467 | } | |
1468 | ||
1469 | static void | |
1470 | l3dss1_setup_ack(struct l3_process *pc, u_char pr, void *arg) | |
1471 | { | |
1472 | struct sk_buff *skb = arg; | |
1473 | int id, ret; | |
1474 | ||
1475 | if ((id = l3dss1_get_channel_id(pc, skb)) >= 0) { | |
1476 | if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) { | |
1477 | if (pc->debug & L3_DEB_WARN) | |
1478 | l3_debug(pc->st, "setup answer with wrong chid %x", id); | |
1479 | pc->para.cause = 100; | |
1480 | l3dss1_status_send(pc, pr, NULL); | |
1481 | return; | |
1482 | } | |
1483 | pc->para.bchannel = id; | |
1484 | } else { | |
1485 | if (pc->debug & L3_DEB_WARN) | |
1486 | l3_debug(pc->st, "setup answer wrong chid (ret %d)", id); | |
1487 | if (id == -1) | |
1488 | pc->para.cause = 96; | |
1489 | else | |
1490 | pc->para.cause = 100; | |
1491 | l3dss1_status_send(pc, pr, NULL); | |
1492 | return; | |
1493 | } | |
1494 | /* Now we are on none mandatory IEs */ | |
1495 | ret = check_infoelements(pc, skb, ie_SETUP_ACKNOWLEDGE); | |
1496 | if (ERR_IE_COMPREHENSION == ret) { | |
1497 | l3dss1_std_ie_err(pc, ret); | |
1498 | return; | |
1499 | } | |
1500 | L3DelTimer(&pc->timer); | |
1501 | newl3state(pc, 2); | |
1502 | L3AddTimer(&pc->timer, T304, CC_T304); | |
1503 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
1504 | l3dss1_std_ie_err(pc, ret); | |
1505 | pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc); | |
1506 | } | |
1507 | ||
1508 | static void | |
1509 | l3dss1_disconnect(struct l3_process *pc, u_char pr, void *arg) | |
1510 | { | |
1511 | struct sk_buff *skb = arg; | |
1512 | u_char *p; | |
1513 | int ret; | |
1514 | u_char cause = 0; | |
1515 | ||
1516 | StopAllL3Timer(pc); | |
1517 | if ((ret = l3dss1_get_cause(pc, skb))) { | |
1518 | if (pc->debug & L3_DEB_WARN) | |
1519 | l3_debug(pc->st, "DISC get_cause ret(%d)", ret); | |
1520 | if (ret < 0) | |
1521 | cause = 96; | |
1522 | else if (ret > 0) | |
1523 | cause = 100; | |
475be4d8 | 1524 | } |
1da177e4 LT |
1525 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) |
1526 | l3dss1_parse_facility(pc->st, pc, pc->callref, p); | |
1527 | ret = check_infoelements(pc, skb, ie_DISCONNECT); | |
1528 | if (ERR_IE_COMPREHENSION == ret) | |
1529 | cause = 96; | |
1530 | else if ((!cause) && (ERR_IE_UNRECOGNIZED == ret)) | |
1531 | cause = 99; | |
1532 | ret = pc->state; | |
1533 | newl3state(pc, 12); | |
1534 | if (cause) | |
1535 | newl3state(pc, 19); | |
475be4d8 | 1536 | if (11 != ret) |
1da177e4 | 1537 | pc->st->l3.l3l4(pc->st, CC_DISCONNECT | INDICATION, pc); |
475be4d8 JP |
1538 | else if (!cause) |
1539 | l3dss1_release_req(pc, pr, NULL); | |
1da177e4 LT |
1540 | if (cause) { |
1541 | l3dss1_message_cause(pc, MT_RELEASE, cause); | |
1542 | L3AddTimer(&pc->timer, T308, CC_T308_1); | |
1543 | } | |
1544 | } | |
1545 | ||
1546 | static void | |
1547 | l3dss1_connect(struct l3_process *pc, u_char pr, void *arg) | |
1548 | { | |
1549 | struct sk_buff *skb = arg; | |
1550 | int ret; | |
1551 | ||
1552 | ret = check_infoelements(pc, skb, ie_CONNECT); | |
1553 | if (ERR_IE_COMPREHENSION == ret) { | |
1554 | l3dss1_std_ie_err(pc, ret); | |
1555 | return; | |
1556 | } | |
1557 | L3DelTimer(&pc->timer); /* T310 */ | |
1558 | newl3state(pc, 10); | |
1559 | pc->para.chargeinfo = 0; | |
1560 | /* here should inserted COLP handling KKe */ | |
1561 | if (ret) | |
1562 | l3dss1_std_ie_err(pc, ret); | |
1563 | pc->st->l3.l3l4(pc->st, CC_SETUP | CONFIRM, pc); | |
1564 | } | |
1565 | ||
1566 | static void | |
1567 | l3dss1_alerting(struct l3_process *pc, u_char pr, void *arg) | |
1568 | { | |
1569 | struct sk_buff *skb = arg; | |
1570 | int ret; | |
1571 | ||
1572 | ret = check_infoelements(pc, skb, ie_ALERTING); | |
1573 | if (ERR_IE_COMPREHENSION == ret) { | |
1574 | l3dss1_std_ie_err(pc, ret); | |
1575 | return; | |
1576 | } | |
1577 | L3DelTimer(&pc->timer); /* T304 */ | |
1578 | newl3state(pc, 4); | |
1579 | if (ret) | |
1580 | l3dss1_std_ie_err(pc, ret); | |
1581 | pc->st->l3.l3l4(pc->st, CC_ALERTING | INDICATION, pc); | |
1582 | } | |
1583 | ||
1584 | static void | |
1585 | l3dss1_setup(struct l3_process *pc, u_char pr, void *arg) | |
1586 | { | |
1587 | u_char *p; | |
1588 | int bcfound = 0; | |
1589 | char tmp[80]; | |
1590 | struct sk_buff *skb = arg; | |
1591 | int id; | |
1592 | int err = 0; | |
1593 | ||
1594 | /* | |
1595 | * Bearer Capabilities | |
1596 | */ | |
1597 | p = skb->data; | |
25985edc | 1598 | /* only the first occurrence 'll be detected ! */ |
1da177e4 LT |
1599 | if ((p = findie(p, skb->len, 0x04, 0))) { |
1600 | if ((p[1] < 2) || (p[1] > 11)) | |
1601 | err = 1; | |
1602 | else { | |
1603 | pc->para.setup.si2 = 0; | |
1604 | switch (p[2] & 0x7f) { | |
475be4d8 JP |
1605 | case 0x00: /* Speech */ |
1606 | case 0x10: /* 3.1 Khz audio */ | |
1607 | pc->para.setup.si1 = 1; | |
1608 | break; | |
1609 | case 0x08: /* Unrestricted digital information */ | |
1610 | pc->para.setup.si1 = 7; | |
1da177e4 | 1611 | /* JIM, 05.11.97 I wanna set service indicator 2 */ |
44456d37 | 1612 | #ifdef EXT_BEARER_CAPS |
475be4d8 | 1613 | pc->para.setup.si2 = DecodeSI2(skb); |
1da177e4 | 1614 | #endif |
475be4d8 JP |
1615 | break; |
1616 | case 0x09: /* Restricted digital information */ | |
1617 | pc->para.setup.si1 = 2; | |
1618 | break; | |
1619 | case 0x11: | |
1620 | /* Unrestr. digital information with | |
1621 | * tones/announcements ( or 7 kHz audio | |
1622 | */ | |
1623 | pc->para.setup.si1 = 3; | |
1624 | break; | |
1625 | case 0x18: /* Video */ | |
1626 | pc->para.setup.si1 = 4; | |
1627 | break; | |
1628 | default: | |
1629 | err = 2; | |
1630 | break; | |
1da177e4 LT |
1631 | } |
1632 | switch (p[3] & 0x7f) { | |
475be4d8 JP |
1633 | case 0x40: /* packed mode */ |
1634 | pc->para.setup.si1 = 8; | |
1635 | break; | |
1636 | case 0x10: /* 64 kbit */ | |
1637 | case 0x11: /* 2*64 kbit */ | |
1638 | case 0x13: /* 384 kbit */ | |
1639 | case 0x15: /* 1536 kbit */ | |
1640 | case 0x17: /* 1920 kbit */ | |
1641 | pc->para.moderate = p[3] & 0x7f; | |
1642 | break; | |
1643 | default: | |
1644 | err = 3; | |
1645 | break; | |
1da177e4 LT |
1646 | } |
1647 | } | |
1648 | if (pc->debug & L3_DEB_SI) | |
1649 | l3_debug(pc->st, "SI=%d, AI=%d", | |
475be4d8 | 1650 | pc->para.setup.si1, pc->para.setup.si2); |
1da177e4 LT |
1651 | if (err) { |
1652 | if (pc->debug & L3_DEB_WARN) | |
1653 | l3_debug(pc->st, "setup with wrong bearer(l=%d:%x,%x)", | |
475be4d8 | 1654 | p[1], p[2], p[3]); |
1da177e4 LT |
1655 | pc->para.cause = 100; |
1656 | l3dss1_msg_without_setup(pc, pr, NULL); | |
1657 | return; | |
1658 | } | |
1659 | } else { | |
1660 | if (pc->debug & L3_DEB_WARN) | |
1661 | l3_debug(pc->st, "setup without bearer capabilities"); | |
1662 | /* ETS 300-104 1.3.3 */ | |
1663 | pc->para.cause = 96; | |
1664 | l3dss1_msg_without_setup(pc, pr, NULL); | |
1665 | return; | |
1666 | } | |
1667 | /* | |
1668 | * Channel Identification | |
1669 | */ | |
1670 | if ((id = l3dss1_get_channel_id(pc, skb)) >= 0) { | |
1671 | if ((pc->para.bchannel = id)) { | |
1672 | if ((3 == id) && (0x10 == pc->para.moderate)) { | |
1673 | if (pc->debug & L3_DEB_WARN) | |
1674 | l3_debug(pc->st, "setup with wrong chid %x", | |
475be4d8 | 1675 | id); |
1da177e4 LT |
1676 | pc->para.cause = 100; |
1677 | l3dss1_msg_without_setup(pc, pr, NULL); | |
1678 | return; | |
1679 | } | |
1680 | bcfound++; | |
475be4d8 JP |
1681 | } else |
1682 | { if (pc->debug & L3_DEB_WARN) | |
1683 | l3_debug(pc->st, "setup without bchannel, call waiting"); | |
1684 | bcfound++; | |
1685 | } | |
1da177e4 LT |
1686 | } else { |
1687 | if (pc->debug & L3_DEB_WARN) | |
1688 | l3_debug(pc->st, "setup with wrong chid ret %d", id); | |
1689 | if (id == -1) | |
1690 | pc->para.cause = 96; | |
1691 | else | |
1692 | pc->para.cause = 100; | |
1693 | l3dss1_msg_without_setup(pc, pr, NULL); | |
1694 | return; | |
1695 | } | |
1696 | /* Now we are on none mandatory IEs */ | |
1697 | err = check_infoelements(pc, skb, ie_SETUP); | |
1698 | if (ERR_IE_COMPREHENSION == err) { | |
1699 | pc->para.cause = 96; | |
1700 | l3dss1_msg_without_setup(pc, pr, NULL); | |
1701 | return; | |
1702 | } | |
1703 | p = skb->data; | |
1704 | if ((p = findie(p, skb->len, 0x70, 0))) | |
1705 | iecpy(pc->para.setup.eazmsn, p, 1); | |
1706 | else | |
1707 | pc->para.setup.eazmsn[0] = 0; | |
1708 | ||
1709 | p = skb->data; | |
1710 | if ((p = findie(p, skb->len, 0x71, 0))) { | |
1711 | /* Called party subaddress */ | |
1712 | if ((p[1] >= 2) && (p[2] == 0x80) && (p[3] == 0x50)) { | |
1713 | tmp[0] = '.'; | |
1714 | iecpy(&tmp[1], p, 2); | |
1715 | strcat(pc->para.setup.eazmsn, tmp); | |
1716 | } else if (pc->debug & L3_DEB_WARN) | |
1717 | l3_debug(pc->st, "wrong called subaddress"); | |
1718 | } | |
1719 | p = skb->data; | |
1720 | if ((p = findie(p, skb->len, 0x6c, 0))) { | |
1721 | pc->para.setup.plan = p[2]; | |
1722 | if (p[2] & 0x80) { | |
1723 | iecpy(pc->para.setup.phone, p, 1); | |
1724 | pc->para.setup.screen = 0; | |
1725 | } else { | |
1726 | iecpy(pc->para.setup.phone, p, 2); | |
1727 | pc->para.setup.screen = p[3]; | |
1728 | } | |
1729 | } else { | |
1730 | pc->para.setup.phone[0] = 0; | |
1731 | pc->para.setup.plan = 0; | |
1732 | pc->para.setup.screen = 0; | |
1733 | } | |
1734 | p = skb->data; | |
1735 | if ((p = findie(p, skb->len, 0x6d, 0))) { | |
1736 | /* Calling party subaddress */ | |
1737 | if ((p[1] >= 2) && (p[2] == 0x80) && (p[3] == 0x50)) { | |
1738 | tmp[0] = '.'; | |
1739 | iecpy(&tmp[1], p, 2); | |
1740 | strcat(pc->para.setup.phone, tmp); | |
1741 | } else if (pc->debug & L3_DEB_WARN) | |
1742 | l3_debug(pc->st, "wrong calling subaddress"); | |
1743 | } | |
1744 | newl3state(pc, 6); | |
1745 | if (err) /* STATUS for none mandatory IE errors after actions are taken */ | |
1746 | l3dss1_std_ie_err(pc, err); | |
1747 | pc->st->l3.l3l4(pc->st, CC_SETUP | INDICATION, pc); | |
1748 | } | |
1749 | ||
1750 | static void | |
1751 | l3dss1_reset(struct l3_process *pc, u_char pr, void *arg) | |
1752 | { | |
1753 | dss1_release_l3_process(pc); | |
1754 | } | |
1755 | ||
1756 | static void | |
1757 | l3dss1_disconnect_req(struct l3_process *pc, u_char pr, void *arg) | |
1758 | { | |
1759 | struct sk_buff *skb; | |
475be4d8 | 1760 | u_char tmp[16 + 40]; |
1da177e4 LT |
1761 | u_char *p = tmp; |
1762 | int l; | |
1763 | u_char cause = 16; | |
1764 | ||
1765 | if (pc->para.cause != NO_CAUSE) | |
1766 | cause = pc->para.cause; | |
1767 | ||
1768 | StopAllL3Timer(pc); | |
1769 | ||
1770 | MsgHead(p, pc->callref, MT_DISCONNECT); | |
1771 | ||
1772 | *p++ = IE_CAUSE; | |
1773 | *p++ = 0x2; | |
1774 | *p++ = 0x80; | |
1775 | *p++ = cause | 0x80; | |
1776 | ||
475be4d8 JP |
1777 | if (pc->prot.dss1.uus1_data[0]) |
1778 | { *p++ = IE_USER_USER; /* UUS info element */ | |
1779 | *p++ = strlen(pc->prot.dss1.uus1_data) + 1; | |
1780 | *p++ = 0x04; /* IA5 chars */ | |
1781 | strcpy(p, pc->prot.dss1.uus1_data); | |
1782 | p += strlen(pc->prot.dss1.uus1_data); | |
1783 | pc->prot.dss1.uus1_data[0] = '\0'; | |
1784 | } | |
1da177e4 LT |
1785 | |
1786 | l = p - tmp; | |
1787 | if (!(skb = l3_alloc_skb(l))) | |
1788 | return; | |
1789 | memcpy(skb_put(skb, l), tmp, l); | |
1790 | newl3state(pc, 11); | |
1791 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
1792 | L3AddTimer(&pc->timer, T305, CC_T305); | |
1793 | } | |
1794 | ||
1795 | static void | |
1796 | l3dss1_setup_rsp(struct l3_process *pc, u_char pr, | |
1797 | void *arg) | |
1798 | { | |
475be4d8 JP |
1799 | if (!pc->para.bchannel) |
1800 | { if (pc->debug & L3_DEB_WARN) | |
1801 | l3_debug(pc->st, "D-chan connect for waiting call"); | |
1802 | l3dss1_disconnect_req(pc, pr, arg); | |
1803 | return; | |
1804 | } | |
1da177e4 LT |
1805 | newl3state(pc, 8); |
1806 | l3dss1_message(pc, MT_CONNECT); | |
1807 | L3DelTimer(&pc->timer); | |
1808 | L3AddTimer(&pc->timer, T313, CC_T313); | |
1809 | } | |
1810 | ||
1811 | static void | |
1812 | l3dss1_connect_ack(struct l3_process *pc, u_char pr, void *arg) | |
1813 | { | |
1814 | struct sk_buff *skb = arg; | |
1815 | int ret; | |
1816 | ||
1817 | ret = check_infoelements(pc, skb, ie_CONNECT_ACKNOWLEDGE); | |
1818 | if (ERR_IE_COMPREHENSION == ret) { | |
1819 | l3dss1_std_ie_err(pc, ret); | |
1820 | return; | |
1821 | } | |
1822 | newl3state(pc, 10); | |
1823 | L3DelTimer(&pc->timer); | |
1824 | if (ret) | |
1825 | l3dss1_std_ie_err(pc, ret); | |
1826 | pc->st->l3.l3l4(pc->st, CC_SETUP_COMPL | INDICATION, pc); | |
1827 | } | |
1828 | ||
1829 | static void | |
1830 | l3dss1_reject_req(struct l3_process *pc, u_char pr, void *arg) | |
1831 | { | |
1832 | struct sk_buff *skb; | |
1833 | u_char tmp[16]; | |
1834 | u_char *p = tmp; | |
1835 | int l; | |
1836 | u_char cause = 21; | |
1837 | ||
1838 | if (pc->para.cause != NO_CAUSE) | |
1839 | cause = pc->para.cause; | |
1840 | ||
1841 | MsgHead(p, pc->callref, MT_RELEASE_COMPLETE); | |
1842 | ||
1843 | *p++ = IE_CAUSE; | |
1844 | *p++ = 0x2; | |
1845 | *p++ = 0x80; | |
1846 | *p++ = cause | 0x80; | |
1847 | ||
1848 | l = p - tmp; | |
1849 | if (!(skb = l3_alloc_skb(l))) | |
1850 | return; | |
1851 | memcpy(skb_put(skb, l), tmp, l); | |
1852 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
1853 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
1854 | newl3state(pc, 0); | |
1855 | dss1_release_l3_process(pc); | |
1856 | } | |
1857 | ||
1858 | static void | |
1859 | l3dss1_release(struct l3_process *pc, u_char pr, void *arg) | |
1860 | { | |
1861 | struct sk_buff *skb = arg; | |
1862 | u_char *p; | |
475be4d8 | 1863 | int ret, cause = 0; |
1da177e4 LT |
1864 | |
1865 | StopAllL3Timer(pc); | |
475be4d8 | 1866 | if ((ret = l3dss1_get_cause(pc, skb)) > 0) { |
1da177e4 LT |
1867 | if (pc->debug & L3_DEB_WARN) |
1868 | l3_debug(pc->st, "REL get_cause ret(%d)", ret); | |
475be4d8 | 1869 | } else if (ret < 0) |
1da177e4 LT |
1870 | pc->para.cause = NO_CAUSE; |
1871 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) { | |
1872 | l3dss1_parse_facility(pc->st, pc, pc->callref, p); | |
1873 | } | |
475be4d8 | 1874 | if ((ret < 0) && (pc->state != 11)) |
1da177e4 | 1875 | cause = 96; |
475be4d8 | 1876 | else if (ret > 0) |
1da177e4 LT |
1877 | cause = 100; |
1878 | ret = check_infoelements(pc, skb, ie_RELEASE); | |
1879 | if (ERR_IE_COMPREHENSION == ret) | |
1880 | cause = 96; | |
1881 | else if ((ERR_IE_UNRECOGNIZED == ret) && (!cause)) | |
475be4d8 | 1882 | cause = 99; |
1da177e4 LT |
1883 | if (cause) |
1884 | l3dss1_message_cause(pc, MT_RELEASE_COMPLETE, cause); | |
1885 | else | |
1886 | l3dss1_message(pc, MT_RELEASE_COMPLETE); | |
1887 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
1888 | newl3state(pc, 0); | |
1889 | dss1_release_l3_process(pc); | |
1890 | } | |
1891 | ||
1892 | static void | |
1893 | l3dss1_alert_req(struct l3_process *pc, u_char pr, | |
1894 | void *arg) | |
1895 | { | |
1896 | newl3state(pc, 7); | |
475be4d8 | 1897 | if (!pc->prot.dss1.uus1_data[0]) |
1da177e4 LT |
1898 | l3dss1_message(pc, MT_ALERTING); |
1899 | else | |
475be4d8 | 1900 | l3dss1_msg_with_uus(pc, MT_ALERTING); |
1da177e4 LT |
1901 | } |
1902 | ||
1903 | static void | |
1904 | l3dss1_proceed_req(struct l3_process *pc, u_char pr, | |
1905 | void *arg) | |
1906 | { | |
1907 | newl3state(pc, 9); | |
1908 | l3dss1_message(pc, MT_CALL_PROCEEDING); | |
475be4d8 | 1909 | pc->st->l3.l3l4(pc->st, CC_PROCEED_SEND | INDICATION, pc); |
1da177e4 LT |
1910 | } |
1911 | ||
1912 | static void | |
1913 | l3dss1_setup_ack_req(struct l3_process *pc, u_char pr, | |
475be4d8 | 1914 | void *arg) |
1da177e4 LT |
1915 | { |
1916 | newl3state(pc, 25); | |
1917 | L3DelTimer(&pc->timer); | |
1918 | L3AddTimer(&pc->timer, T302, CC_T302); | |
1919 | l3dss1_message(pc, MT_SETUP_ACKNOWLEDGE); | |
1920 | } | |
1921 | ||
1922 | /********************************************/ | |
1923 | /* deliver a incoming display message to HL */ | |
1924 | /********************************************/ | |
1925 | static void | |
1926 | l3dss1_deliver_display(struct l3_process *pc, int pr, u_char *infp) | |
1927 | { u_char len; | |
475be4d8 | 1928 | isdn_ctrl ic; |
1da177e4 | 1929 | struct IsdnCardState *cs; |
475be4d8 | 1930 | char *p; |
1da177e4 | 1931 | |
475be4d8 JP |
1932 | if (*infp++ != IE_DISPLAY) return; |
1933 | if ((len = *infp++) > 80) return; /* total length <= 82 */ | |
1da177e4 LT |
1934 | if (!pc->chan) return; |
1935 | ||
475be4d8 JP |
1936 | p = ic.parm.display; |
1937 | while (len--) | |
1938 | *p++ = *infp++; | |
1da177e4 LT |
1939 | *p = '\0'; |
1940 | ic.command = ISDN_STAT_DISPLAY; | |
1941 | cs = pc->st->l1.hardware; | |
1942 | ic.driver = cs->myid; | |
475be4d8 | 1943 | ic.arg = pc->chan->chan; |
1da177e4 LT |
1944 | cs->iif.statcallb(&ic); |
1945 | } /* l3dss1_deliver_display */ | |
1946 | ||
1947 | ||
1948 | static void | |
1949 | l3dss1_progress(struct l3_process *pc, u_char pr, void *arg) | |
1950 | { | |
1951 | struct sk_buff *skb = arg; | |
1952 | int err = 0; | |
1953 | u_char *p; | |
1954 | ||
1955 | if ((p = findie(skb->data, skb->len, IE_PROGRESS, 0))) { | |
1956 | if (p[1] != 2) { | |
1957 | err = 1; | |
1958 | pc->para.cause = 100; | |
1959 | } else if (!(p[2] & 0x70)) { | |
1960 | switch (p[2]) { | |
475be4d8 JP |
1961 | case 0x80: |
1962 | case 0x81: | |
1963 | case 0x82: | |
1964 | case 0x84: | |
1965 | case 0x85: | |
1966 | case 0x87: | |
1967 | case 0x8a: | |
1968 | switch (p[3]) { | |
1da177e4 LT |
1969 | case 0x81: |
1970 | case 0x82: | |
475be4d8 | 1971 | case 0x83: |
1da177e4 | 1972 | case 0x84: |
475be4d8 | 1973 | case 0x88: |
1da177e4 LT |
1974 | break; |
1975 | default: | |
475be4d8 | 1976 | err = 2; |
1da177e4 LT |
1977 | pc->para.cause = 100; |
1978 | break; | |
475be4d8 JP |
1979 | } |
1980 | break; | |
1981 | default: | |
1982 | err = 3; | |
1983 | pc->para.cause = 100; | |
1984 | break; | |
1da177e4 LT |
1985 | } |
1986 | } | |
1987 | } else { | |
1988 | pc->para.cause = 96; | |
1989 | err = 4; | |
1990 | } | |
475be4d8 | 1991 | if (err) { |
1da177e4 LT |
1992 | if (pc->debug & L3_DEB_WARN) |
1993 | l3_debug(pc->st, "progress error %d", err); | |
1994 | l3dss1_status_send(pc, pr, NULL); | |
1995 | return; | |
1996 | } | |
1997 | /* Now we are on none mandatory IEs */ | |
1998 | err = check_infoelements(pc, skb, ie_PROGRESS); | |
1999 | if (err) | |
2000 | l3dss1_std_ie_err(pc, err); | |
2001 | if (ERR_IE_COMPREHENSION != err) | |
2002 | pc->st->l3.l3l4(pc->st, CC_PROGRESS | INDICATION, pc); | |
2003 | } | |
2004 | ||
2005 | static void | |
2006 | l3dss1_notify(struct l3_process *pc, u_char pr, void *arg) | |
2007 | { | |
2008 | struct sk_buff *skb = arg; | |
2009 | int err = 0; | |
2010 | u_char *p; | |
2011 | ||
2012 | if ((p = findie(skb->data, skb->len, IE_NOTIFY, 0))) { | |
2013 | if (p[1] != 1) { | |
2014 | err = 1; | |
2015 | pc->para.cause = 100; | |
2016 | } else { | |
2017 | switch (p[2]) { | |
475be4d8 JP |
2018 | case 0x80: |
2019 | case 0x81: | |
2020 | case 0x82: | |
2021 | break; | |
2022 | default: | |
2023 | pc->para.cause = 100; | |
2024 | err = 2; | |
2025 | break; | |
1da177e4 LT |
2026 | } |
2027 | } | |
2028 | } else { | |
2029 | pc->para.cause = 96; | |
2030 | err = 3; | |
2031 | } | |
475be4d8 | 2032 | if (err) { |
1da177e4 LT |
2033 | if (pc->debug & L3_DEB_WARN) |
2034 | l3_debug(pc->st, "notify error %d", err); | |
2035 | l3dss1_status_send(pc, pr, NULL); | |
2036 | return; | |
2037 | } | |
2038 | /* Now we are on none mandatory IEs */ | |
2039 | err = check_infoelements(pc, skb, ie_NOTIFY); | |
2040 | if (err) | |
2041 | l3dss1_std_ie_err(pc, err); | |
2042 | if (ERR_IE_COMPREHENSION != err) | |
2043 | pc->st->l3.l3l4(pc->st, CC_NOTIFY | INDICATION, pc); | |
2044 | } | |
2045 | ||
2046 | static void | |
2047 | l3dss1_status_enq(struct l3_process *pc, u_char pr, void *arg) | |
2048 | { | |
2049 | int ret; | |
2050 | struct sk_buff *skb = arg; | |
2051 | ||
2052 | ret = check_infoelements(pc, skb, ie_STATUS_ENQUIRY); | |
2053 | l3dss1_std_ie_err(pc, ret); | |
2054 | pc->para.cause = 30; /* response to STATUS_ENQUIRY */ | |
475be4d8 | 2055 | l3dss1_status_send(pc, pr, NULL); |
1da177e4 LT |
2056 | } |
2057 | ||
2058 | static void | |
2059 | l3dss1_information(struct l3_process *pc, u_char pr, void *arg) | |
2060 | { | |
2061 | int ret; | |
2062 | struct sk_buff *skb = arg; | |
2063 | u_char *p; | |
2064 | char tmp[32]; | |
2065 | ||
2066 | ret = check_infoelements(pc, skb, ie_INFORMATION); | |
2067 | if (ret) | |
2068 | l3dss1_std_ie_err(pc, ret); | |
2069 | if (pc->state == 25) { /* overlap receiving */ | |
2070 | L3DelTimer(&pc->timer); | |
2071 | p = skb->data; | |
2072 | if ((p = findie(p, skb->len, 0x70, 0))) { | |
2073 | iecpy(tmp, p, 1); | |
2074 | strcat(pc->para.setup.eazmsn, tmp); | |
2075 | pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc); | |
2076 | } | |
2077 | L3AddTimer(&pc->timer, T302, CC_T302); | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | /******************************/ | |
2082 | /* handle deflection requests */ | |
2083 | /******************************/ | |
2084 | static void l3dss1_redir_req(struct l3_process *pc, u_char pr, void *arg) | |
2085 | { | |
2086 | struct sk_buff *skb; | |
2087 | u_char tmp[128]; | |
2088 | u_char *p = tmp; | |
475be4d8 JP |
2089 | u_char *subp; |
2090 | u_char len_phone = 0; | |
2091 | u_char len_sub = 0; | |
2092 | int l; | |
2093 | ||
2094 | ||
2095 | strcpy(pc->prot.dss1.uus1_data, pc->chan->setup.eazmsn); /* copy uus element if available */ | |
2096 | if (!pc->chan->setup.phone[0]) | |
2097 | { pc->para.cause = -1; | |
2098 | l3dss1_disconnect_req(pc, pr, arg); /* disconnect immediately */ | |
2099 | return; | |
2100 | } /* only uus */ | |
2101 | ||
2102 | if (pc->prot.dss1.invoke_id) | |
2103 | free_invoke_id(pc->st, pc->prot.dss1.invoke_id); | |
2104 | ||
2105 | if (!(pc->prot.dss1.invoke_id = new_invoke_id(pc->st))) | |
2106 | return; | |
2107 | ||
2108 | MsgHead(p, pc->callref, MT_FACILITY); | |
2109 | ||
2110 | for (subp = pc->chan->setup.phone; (*subp) && (*subp != '.'); subp++) len_phone++; /* len of phone number */ | |
2111 | if (*subp++ == '.') len_sub = strlen(subp) + 2; /* length including info subaddress element */ | |
1da177e4 LT |
2112 | |
2113 | *p++ = 0x1c; /* Facility info element */ | |
475be4d8 JP |
2114 | *p++ = len_phone + len_sub + 2 + 2 + 8 + 3 + 3; /* length of element */ |
2115 | *p++ = 0x91; /* remote operations protocol */ | |
2116 | *p++ = 0xa1; /* invoke component */ | |
2117 | ||
2118 | *p++ = len_phone + len_sub + 2 + 2 + 8 + 3; /* length of data */ | |
2119 | *p++ = 0x02; /* invoke id tag, integer */ | |
1da177e4 | 2120 | *p++ = 0x01; /* length */ |
475be4d8 JP |
2121 | *p++ = pc->prot.dss1.invoke_id; /* invoke id */ |
2122 | *p++ = 0x02; /* operation value tag, integer */ | |
1da177e4 | 2123 | *p++ = 0x01; /* length */ |
475be4d8 JP |
2124 | *p++ = 0x0D; /* Call Deflect */ |
2125 | ||
2126 | *p++ = 0x30; /* sequence phone number */ | |
2127 | *p++ = len_phone + 2 + 2 + 3 + len_sub; /* length */ | |
2128 | ||
2129 | *p++ = 0x30; /* Deflected to UserNumber */ | |
2130 | *p++ = len_phone + 2 + len_sub; /* length */ | |
2131 | *p++ = 0x80; /* NumberDigits */ | |
1da177e4 | 2132 | *p++ = len_phone; /* length */ |
475be4d8 JP |
2133 | for (l = 0; l < len_phone; l++) |
2134 | *p++ = pc->chan->setup.phone[l]; | |
1da177e4 | 2135 | |
475be4d8 JP |
2136 | if (len_sub) |
2137 | { *p++ = 0x04; /* called party subaddress */ | |
2138 | *p++ = len_sub - 2; | |
2139 | while (*subp) *p++ = *subp++; | |
2140 | } | |
1da177e4 | 2141 | |
475be4d8 JP |
2142 | *p++ = 0x01; /* screening identifier */ |
2143 | *p++ = 0x01; | |
2144 | *p++ = pc->chan->setup.screen; | |
1da177e4 LT |
2145 | |
2146 | l = p - tmp; | |
2147 | if (!(skb = l3_alloc_skb(l))) return; | |
2148 | memcpy(skb_put(skb, l), tmp, l); | |
2149 | ||
475be4d8 | 2150 | l3_msg(pc->st, DL_DATA | REQUEST, skb); |
1da177e4 LT |
2151 | } /* l3dss1_redir_req */ |
2152 | ||
2153 | /********************************************/ | |
2154 | /* handle deflection request in early state */ | |
2155 | /********************************************/ | |
2156 | static void l3dss1_redir_req_early(struct l3_process *pc, u_char pr, void *arg) | |
2157 | { | |
475be4d8 JP |
2158 | l3dss1_proceed_req(pc, pr, arg); |
2159 | l3dss1_redir_req(pc, pr, arg); | |
1da177e4 LT |
2160 | } /* l3dss1_redir_req_early */ |
2161 | ||
2162 | /***********************************************/ | |
2163 | /* handle special commands for this protocol. */ | |
25985edc | 2164 | /* Examples are call independent services like */ |
1da177e4 LT |
2165 | /* remote operations with dummy callref. */ |
2166 | /***********************************************/ | |
2167 | static int l3dss1_cmd_global(struct PStack *st, isdn_ctrl *ic) | |
2168 | { u_char id; | |
475be4d8 JP |
2169 | u_char temp[265]; |
2170 | u_char *p = temp; | |
2171 | int i, l, proc_len; | |
2172 | struct sk_buff *skb; | |
2173 | struct l3_process *pc = NULL; | |
2174 | ||
2175 | switch (ic->arg) | |
2176 | { case DSS1_CMD_INVOKE: | |
2177 | if (ic->parm.dss1_io.datalen < 0) return (-2); /* invalid parameter */ | |
2178 | ||
2179 | for (proc_len = 1, i = ic->parm.dss1_io.proc >> 8; i; i++) | |
2180 | i = i >> 8; /* add one byte */ | |
2181 | l = ic->parm.dss1_io.datalen + proc_len + 8; /* length excluding ie header */ | |
2182 | if (l > 255) | |
2183 | return (-2); /* too long */ | |
2184 | ||
2185 | if (!(id = new_invoke_id(st))) | |
2186 | return (0); /* first get a invoke id -> return if no available */ | |
2187 | ||
2188 | i = -1; | |
2189 | MsgHead(p, i, MT_FACILITY); /* build message head */ | |
2190 | *p++ = 0x1C; /* Facility IE */ | |
2191 | *p++ = l; /* length of ie */ | |
2192 | *p++ = 0x91; /* remote operations */ | |
2193 | *p++ = 0xA1; /* invoke */ | |
2194 | *p++ = l - 3; /* length of invoke */ | |
2195 | *p++ = 0x02; /* invoke id tag */ | |
2196 | *p++ = 0x01; /* length is 1 */ | |
2197 | *p++ = id; /* invoke id */ | |
2198 | *p++ = 0x02; /* operation */ | |
2199 | *p++ = proc_len; /* length of operation */ | |
2200 | ||
2201 | for (i = proc_len; i; i--) | |
2202 | *p++ = (ic->parm.dss1_io.proc >> (i - 1)) & 0xFF; | |
2203 | memcpy(p, ic->parm.dss1_io.data, ic->parm.dss1_io.datalen); /* copy data */ | |
2204 | l = (p - temp) + ic->parm.dss1_io.datalen; /* total length */ | |
2205 | ||
2206 | if (ic->parm.dss1_io.timeout > 0) | |
2207 | if (!(pc = dss1_new_l3_process(st, -1))) | |
2208 | { free_invoke_id(st, id); | |
2209 | return (-2); | |
2210 | } | |
2211 | pc->prot.dss1.ll_id = ic->parm.dss1_io.ll_id; /* remember id */ | |
2212 | pc->prot.dss1.proc = ic->parm.dss1_io.proc; /* and procedure */ | |
2213 | ||
2214 | if (!(skb = l3_alloc_skb(l))) | |
2215 | { free_invoke_id(st, id); | |
2216 | if (pc) dss1_release_l3_process(pc); | |
2217 | return (-2); | |
2218 | } | |
2219 | memcpy(skb_put(skb, l), temp, l); | |
2220 | ||
2221 | if (pc) | |
2222 | { pc->prot.dss1.invoke_id = id; /* remember id */ | |
2223 | L3AddTimer(&pc->timer, ic->parm.dss1_io.timeout, CC_TDSS1_IO | REQUEST); | |
2224 | } | |
2225 | ||
2226 | l3_msg(st, DL_DATA | REQUEST, skb); | |
2227 | ic->parm.dss1_io.hl_id = id; /* return id */ | |
2228 | return (0); | |
2229 | ||
2230 | case DSS1_CMD_INVOKE_ABORT: | |
2231 | if ((pc = l3dss1_search_dummy_proc(st, ic->parm.dss1_io.hl_id))) | |
2232 | { L3DelTimer(&pc->timer); /* remove timer */ | |
2233 | dss1_release_l3_process(pc); | |
2234 | return (0); | |
2235 | } | |
2236 | else | |
2237 | { l3_debug(st, "l3dss1_cmd_global abort unknown id"); | |
2238 | return (-2); | |
2239 | } | |
2240 | break; | |
2241 | ||
2242 | default: | |
2243 | l3_debug(st, "l3dss1_cmd_global unknown cmd 0x%lx", ic->arg); | |
2244 | return (-1); | |
2245 | } /* switch ic-> arg */ | |
2246 | return (-1); | |
1da177e4 LT |
2247 | } /* l3dss1_cmd_global */ |
2248 | ||
475be4d8 | 2249 | static void |
1da177e4 LT |
2250 | l3dss1_io_timer(struct l3_process *pc) |
2251 | { isdn_ctrl ic; | |
475be4d8 | 2252 | struct IsdnCardState *cs = pc->st->l1.hardware; |
1da177e4 | 2253 | |
475be4d8 | 2254 | L3DelTimer(&pc->timer); /* remove timer */ |
1da177e4 | 2255 | |
475be4d8 JP |
2256 | ic.driver = cs->myid; |
2257 | ic.command = ISDN_STAT_PROT; | |
2258 | ic.arg = DSS1_STAT_INVOKE_ERR; | |
2259 | ic.parm.dss1_io.hl_id = pc->prot.dss1.invoke_id; | |
2260 | ic.parm.dss1_io.ll_id = pc->prot.dss1.ll_id; | |
2261 | ic.parm.dss1_io.proc = pc->prot.dss1.proc; | |
2262 | ic.parm.dss1_io.timeout = -1; | |
2263 | ic.parm.dss1_io.datalen = 0; | |
2264 | ic.parm.dss1_io.data = NULL; | |
2265 | free_invoke_id(pc->st, pc->prot.dss1.invoke_id); | |
2266 | pc->prot.dss1.invoke_id = 0; /* reset id */ | |
1da177e4 | 2267 | |
475be4d8 | 2268 | cs->iif.statcallb(&ic); |
1da177e4 | 2269 | |
475be4d8 | 2270 | dss1_release_l3_process(pc); |
1da177e4 LT |
2271 | } /* l3dss1_io_timer */ |
2272 | ||
2273 | static void | |
2274 | l3dss1_release_ind(struct l3_process *pc, u_char pr, void *arg) | |
2275 | { | |
2276 | u_char *p; | |
2277 | struct sk_buff *skb = arg; | |
2278 | int callState = 0; | |
2279 | p = skb->data; | |
2280 | ||
2281 | if ((p = findie(p, skb->len, IE_CALL_STATE, 0))) { | |
2282 | p++; | |
2283 | if (1 == *p++) | |
2284 | callState = *p; | |
2285 | } | |
2286 | if (callState == 0) { | |
2287 | /* ETS 300-104 7.6.1, 8.6.1, 10.6.1... and 16.1 | |
2288 | * set down layer 3 without sending any message | |
2289 | */ | |
2290 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
2291 | newl3state(pc, 0); | |
2292 | dss1_release_l3_process(pc); | |
2293 | } else { | |
2294 | pc->st->l3.l3l4(pc->st, CC_IGNORE | INDICATION, pc); | |
2295 | } | |
2296 | } | |
2297 | ||
2298 | static void | |
2299 | l3dss1_dummy(struct l3_process *pc, u_char pr, void *arg) | |
2300 | { | |
2301 | } | |
2302 | ||
2303 | static void | |
2304 | l3dss1_t302(struct l3_process *pc, u_char pr, void *arg) | |
2305 | { | |
2306 | L3DelTimer(&pc->timer); | |
2307 | pc->para.loc = 0; | |
2308 | pc->para.cause = 28; /* invalid number */ | |
2309 | l3dss1_disconnect_req(pc, pr, NULL); | |
2310 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); | |
2311 | } | |
2312 | ||
2313 | static void | |
2314 | l3dss1_t303(struct l3_process *pc, u_char pr, void *arg) | |
2315 | { | |
2316 | if (pc->N303 > 0) { | |
2317 | pc->N303--; | |
2318 | L3DelTimer(&pc->timer); | |
2319 | l3dss1_setup_req(pc, pr, arg); | |
2320 | } else { | |
2321 | L3DelTimer(&pc->timer); | |
2322 | l3dss1_message_cause(pc, MT_RELEASE_COMPLETE, 102); | |
2323 | pc->st->l3.l3l4(pc->st, CC_NOSETUP_RSP, pc); | |
2324 | dss1_release_l3_process(pc); | |
2325 | } | |
2326 | } | |
2327 | ||
2328 | static void | |
2329 | l3dss1_t304(struct l3_process *pc, u_char pr, void *arg) | |
2330 | { | |
2331 | L3DelTimer(&pc->timer); | |
2332 | pc->para.loc = 0; | |
2333 | pc->para.cause = 102; | |
2334 | l3dss1_disconnect_req(pc, pr, NULL); | |
2335 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); | |
2336 | ||
2337 | } | |
2338 | ||
2339 | static void | |
2340 | l3dss1_t305(struct l3_process *pc, u_char pr, void *arg) | |
2341 | { | |
2342 | u_char tmp[16]; | |
2343 | u_char *p = tmp; | |
2344 | int l; | |
2345 | struct sk_buff *skb; | |
2346 | u_char cause = 16; | |
2347 | ||
2348 | L3DelTimer(&pc->timer); | |
2349 | if (pc->para.cause != NO_CAUSE) | |
2350 | cause = pc->para.cause; | |
2351 | ||
2352 | MsgHead(p, pc->callref, MT_RELEASE); | |
2353 | ||
2354 | *p++ = IE_CAUSE; | |
2355 | *p++ = 0x2; | |
2356 | *p++ = 0x80; | |
2357 | *p++ = cause | 0x80; | |
2358 | ||
2359 | l = p - tmp; | |
2360 | if (!(skb = l3_alloc_skb(l))) | |
2361 | return; | |
2362 | memcpy(skb_put(skb, l), tmp, l); | |
2363 | newl3state(pc, 19); | |
2364 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2365 | L3AddTimer(&pc->timer, T308, CC_T308_1); | |
2366 | } | |
2367 | ||
2368 | static void | |
2369 | l3dss1_t310(struct l3_process *pc, u_char pr, void *arg) | |
2370 | { | |
2371 | L3DelTimer(&pc->timer); | |
2372 | pc->para.loc = 0; | |
2373 | pc->para.cause = 102; | |
2374 | l3dss1_disconnect_req(pc, pr, NULL); | |
2375 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); | |
2376 | } | |
2377 | ||
2378 | static void | |
2379 | l3dss1_t313(struct l3_process *pc, u_char pr, void *arg) | |
2380 | { | |
2381 | L3DelTimer(&pc->timer); | |
2382 | pc->para.loc = 0; | |
2383 | pc->para.cause = 102; | |
2384 | l3dss1_disconnect_req(pc, pr, NULL); | |
2385 | pc->st->l3.l3l4(pc->st, CC_CONNECT_ERR, pc); | |
2386 | } | |
2387 | ||
2388 | static void | |
2389 | l3dss1_t308_1(struct l3_process *pc, u_char pr, void *arg) | |
2390 | { | |
2391 | newl3state(pc, 19); | |
2392 | L3DelTimer(&pc->timer); | |
2393 | l3dss1_message(pc, MT_RELEASE); | |
2394 | L3AddTimer(&pc->timer, T308, CC_T308_2); | |
2395 | } | |
2396 | ||
2397 | static void | |
2398 | l3dss1_t308_2(struct l3_process *pc, u_char pr, void *arg) | |
2399 | { | |
2400 | L3DelTimer(&pc->timer); | |
2401 | pc->st->l3.l3l4(pc->st, CC_RELEASE_ERR, pc); | |
2402 | dss1_release_l3_process(pc); | |
2403 | } | |
2404 | ||
2405 | static void | |
2406 | l3dss1_t318(struct l3_process *pc, u_char pr, void *arg) | |
2407 | { | |
2408 | L3DelTimer(&pc->timer); | |
2409 | pc->para.cause = 102; /* Timer expiry */ | |
2410 | pc->para.loc = 0; /* local */ | |
2411 | pc->st->l3.l3l4(pc->st, CC_RESUME_ERR, pc); | |
2412 | newl3state(pc, 19); | |
2413 | l3dss1_message(pc, MT_RELEASE); | |
2414 | L3AddTimer(&pc->timer, T308, CC_T308_1); | |
2415 | } | |
2416 | ||
2417 | static void | |
2418 | l3dss1_t319(struct l3_process *pc, u_char pr, void *arg) | |
2419 | { | |
2420 | L3DelTimer(&pc->timer); | |
2421 | pc->para.cause = 102; /* Timer expiry */ | |
2422 | pc->para.loc = 0; /* local */ | |
2423 | pc->st->l3.l3l4(pc->st, CC_SUSPEND_ERR, pc); | |
2424 | newl3state(pc, 10); | |
2425 | } | |
2426 | ||
2427 | static void | |
2428 | l3dss1_restart(struct l3_process *pc, u_char pr, void *arg) | |
2429 | { | |
2430 | L3DelTimer(&pc->timer); | |
2431 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
2432 | dss1_release_l3_process(pc); | |
2433 | } | |
2434 | ||
2435 | static void | |
2436 | l3dss1_status(struct l3_process *pc, u_char pr, void *arg) | |
2437 | { | |
2438 | u_char *p; | |
2439 | struct sk_buff *skb = arg; | |
475be4d8 | 2440 | int ret; |
1da177e4 | 2441 | u_char cause = 0, callState = 0; |
475be4d8 | 2442 | |
1da177e4 LT |
2443 | if ((ret = l3dss1_get_cause(pc, skb))) { |
2444 | if (pc->debug & L3_DEB_WARN) | |
475be4d8 | 2445 | l3_debug(pc->st, "STATUS get_cause ret(%d)", ret); |
1da177e4 LT |
2446 | if (ret < 0) |
2447 | cause = 96; | |
2448 | else if (ret > 0) | |
2449 | cause = 100; | |
2450 | } | |
2451 | if ((p = findie(skb->data, skb->len, IE_CALL_STATE, 0))) { | |
2452 | p++; | |
2453 | if (1 == *p++) { | |
2454 | callState = *p; | |
2455 | if (!ie_in_set(pc, *p, l3_valid_states)) | |
2456 | cause = 100; | |
2457 | } else | |
2458 | cause = 100; | |
2459 | } else | |
2460 | cause = 96; | |
2461 | if (!cause) { /* no error before */ | |
2462 | ret = check_infoelements(pc, skb, ie_STATUS); | |
2463 | if (ERR_IE_COMPREHENSION == ret) | |
2464 | cause = 96; | |
2465 | else if (ERR_IE_UNRECOGNIZED == ret) | |
2466 | cause = 99; | |
2467 | } | |
2468 | if (cause) { | |
2469 | u_char tmp; | |
475be4d8 | 2470 | |
1da177e4 | 2471 | if (pc->debug & L3_DEB_WARN) |
475be4d8 | 2472 | l3_debug(pc->st, "STATUS error(%d/%d)", ret, cause); |
1da177e4 LT |
2473 | tmp = pc->para.cause; |
2474 | pc->para.cause = cause; | |
2475 | l3dss1_status_send(pc, 0, NULL); | |
2476 | if (cause == 99) | |
2477 | pc->para.cause = tmp; | |
2478 | else | |
2479 | return; | |
2480 | } | |
2481 | cause = pc->para.cause; | |
2482 | if (((cause & 0x7f) == 111) && (callState == 0)) { | |
2483 | /* ETS 300-104 7.6.1, 8.6.1, 10.6.1... | |
2484 | * if received MT_STATUS with cause == 111 and call | |
2485 | * state == 0, then we must set down layer 3 | |
2486 | */ | |
2487 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
2488 | newl3state(pc, 0); | |
2489 | dss1_release_l3_process(pc); | |
2490 | } | |
2491 | } | |
2492 | ||
2493 | static void | |
2494 | l3dss1_facility(struct l3_process *pc, u_char pr, void *arg) | |
2495 | { | |
2496 | struct sk_buff *skb = arg; | |
2497 | int ret; | |
475be4d8 | 2498 | |
1da177e4 LT |
2499 | ret = check_infoelements(pc, skb, ie_FACILITY); |
2500 | l3dss1_std_ie_err(pc, ret); | |
475be4d8 | 2501 | { |
1da177e4 LT |
2502 | u_char *p; |
2503 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) | |
2504 | l3dss1_parse_facility(pc->st, pc, pc->callref, p); | |
2505 | } | |
2506 | } | |
2507 | ||
2508 | static void | |
2509 | l3dss1_suspend_req(struct l3_process *pc, u_char pr, void *arg) | |
2510 | { | |
2511 | struct sk_buff *skb; | |
2512 | u_char tmp[32]; | |
2513 | u_char *p = tmp; | |
2514 | u_char i, l; | |
2515 | u_char *msg = pc->chan->setup.phone; | |
2516 | ||
2517 | MsgHead(p, pc->callref, MT_SUSPEND); | |
2518 | l = *msg++; | |
2519 | if (l && (l <= 10)) { /* Max length 10 octets */ | |
2520 | *p++ = IE_CALL_ID; | |
2521 | *p++ = l; | |
2522 | for (i = 0; i < l; i++) | |
2523 | *p++ = *msg++; | |
2524 | } else if (l) { | |
2525 | l3_debug(pc->st, "SUS wrong CALL_ID len %d", l); | |
2526 | return; | |
2527 | } | |
2528 | l = p - tmp; | |
2529 | if (!(skb = l3_alloc_skb(l))) | |
2530 | return; | |
2531 | memcpy(skb_put(skb, l), tmp, l); | |
2532 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2533 | newl3state(pc, 15); | |
2534 | L3AddTimer(&pc->timer, T319, CC_T319); | |
2535 | } | |
2536 | ||
2537 | static void | |
2538 | l3dss1_suspend_ack(struct l3_process *pc, u_char pr, void *arg) | |
2539 | { | |
2540 | struct sk_buff *skb = arg; | |
2541 | int ret; | |
2542 | ||
2543 | L3DelTimer(&pc->timer); | |
2544 | newl3state(pc, 0); | |
2545 | pc->para.cause = NO_CAUSE; | |
2546 | pc->st->l3.l3l4(pc->st, CC_SUSPEND | CONFIRM, pc); | |
2547 | /* We don't handle suspend_ack for IE errors now */ | |
2548 | if ((ret = check_infoelements(pc, skb, ie_SUSPEND_ACKNOWLEDGE))) | |
2549 | if (pc->debug & L3_DEB_WARN) | |
475be4d8 | 2550 | l3_debug(pc->st, "SUSPACK check ie(%d)", ret); |
1da177e4 LT |
2551 | dss1_release_l3_process(pc); |
2552 | } | |
2553 | ||
2554 | static void | |
2555 | l3dss1_suspend_rej(struct l3_process *pc, u_char pr, void *arg) | |
2556 | { | |
2557 | struct sk_buff *skb = arg; | |
2558 | int ret; | |
2559 | ||
2560 | if ((ret = l3dss1_get_cause(pc, skb))) { | |
2561 | if (pc->debug & L3_DEB_WARN) | |
475be4d8 JP |
2562 | l3_debug(pc->st, "SUSP_REJ get_cause ret(%d)", ret); |
2563 | if (ret < 0) | |
1da177e4 LT |
2564 | pc->para.cause = 96; |
2565 | else | |
2566 | pc->para.cause = 100; | |
2567 | l3dss1_status_send(pc, pr, NULL); | |
2568 | return; | |
2569 | } | |
2570 | ret = check_infoelements(pc, skb, ie_SUSPEND_REJECT); | |
2571 | if (ERR_IE_COMPREHENSION == ret) { | |
2572 | l3dss1_std_ie_err(pc, ret); | |
2573 | return; | |
2574 | } | |
2575 | L3DelTimer(&pc->timer); | |
2576 | pc->st->l3.l3l4(pc->st, CC_SUSPEND_ERR, pc); | |
2577 | newl3state(pc, 10); | |
2578 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
2579 | l3dss1_std_ie_err(pc, ret); | |
2580 | } | |
2581 | ||
2582 | static void | |
2583 | l3dss1_resume_req(struct l3_process *pc, u_char pr, void *arg) | |
2584 | { | |
2585 | struct sk_buff *skb; | |
2586 | u_char tmp[32]; | |
2587 | u_char *p = tmp; | |
2588 | u_char i, l; | |
2589 | u_char *msg = pc->para.setup.phone; | |
2590 | ||
2591 | MsgHead(p, pc->callref, MT_RESUME); | |
2592 | ||
2593 | l = *msg++; | |
2594 | if (l && (l <= 10)) { /* Max length 10 octets */ | |
2595 | *p++ = IE_CALL_ID; | |
2596 | *p++ = l; | |
2597 | for (i = 0; i < l; i++) | |
2598 | *p++ = *msg++; | |
2599 | } else if (l) { | |
2600 | l3_debug(pc->st, "RES wrong CALL_ID len %d", l); | |
2601 | return; | |
2602 | } | |
2603 | l = p - tmp; | |
2604 | if (!(skb = l3_alloc_skb(l))) | |
2605 | return; | |
2606 | memcpy(skb_put(skb, l), tmp, l); | |
2607 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2608 | newl3state(pc, 17); | |
2609 | L3AddTimer(&pc->timer, T318, CC_T318); | |
2610 | } | |
2611 | ||
2612 | static void | |
2613 | l3dss1_resume_ack(struct l3_process *pc, u_char pr, void *arg) | |
2614 | { | |
2615 | struct sk_buff *skb = arg; | |
2616 | int id, ret; | |
2617 | ||
2618 | if ((id = l3dss1_get_channel_id(pc, skb)) > 0) { | |
2619 | if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) { | |
2620 | if (pc->debug & L3_DEB_WARN) | |
2621 | l3_debug(pc->st, "resume ack with wrong chid %x", id); | |
2622 | pc->para.cause = 100; | |
2623 | l3dss1_status_send(pc, pr, NULL); | |
2624 | return; | |
2625 | } | |
2626 | pc->para.bchannel = id; | |
2627 | } else if (1 == pc->state) { | |
2628 | if (pc->debug & L3_DEB_WARN) | |
2629 | l3_debug(pc->st, "resume ack without chid (ret %d)", id); | |
2630 | pc->para.cause = 96; | |
2631 | l3dss1_status_send(pc, pr, NULL); | |
2632 | return; | |
2633 | } | |
2634 | ret = check_infoelements(pc, skb, ie_RESUME_ACKNOWLEDGE); | |
2635 | if (ERR_IE_COMPREHENSION == ret) { | |
2636 | l3dss1_std_ie_err(pc, ret); | |
2637 | return; | |
2638 | } | |
2639 | L3DelTimer(&pc->timer); | |
2640 | pc->st->l3.l3l4(pc->st, CC_RESUME | CONFIRM, pc); | |
2641 | newl3state(pc, 10); | |
2642 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
2643 | l3dss1_std_ie_err(pc, ret); | |
2644 | } | |
2645 | ||
2646 | static void | |
2647 | l3dss1_resume_rej(struct l3_process *pc, u_char pr, void *arg) | |
2648 | { | |
2649 | struct sk_buff *skb = arg; | |
2650 | int ret; | |
2651 | ||
2652 | if ((ret = l3dss1_get_cause(pc, skb))) { | |
2653 | if (pc->debug & L3_DEB_WARN) | |
475be4d8 JP |
2654 | l3_debug(pc->st, "RES_REJ get_cause ret(%d)", ret); |
2655 | if (ret < 0) | |
1da177e4 LT |
2656 | pc->para.cause = 96; |
2657 | else | |
2658 | pc->para.cause = 100; | |
2659 | l3dss1_status_send(pc, pr, NULL); | |
2660 | return; | |
2661 | } | |
2662 | ret = check_infoelements(pc, skb, ie_RESUME_REJECT); | |
2663 | if (ERR_IE_COMPREHENSION == ret) { | |
2664 | l3dss1_std_ie_err(pc, ret); | |
2665 | return; | |
2666 | } | |
2667 | L3DelTimer(&pc->timer); | |
2668 | pc->st->l3.l3l4(pc->st, CC_RESUME_ERR, pc); | |
2669 | newl3state(pc, 0); | |
2670 | if (ret) /* STATUS for none mandatory IE errors after actions are taken */ | |
2671 | l3dss1_std_ie_err(pc, ret); | |
2672 | dss1_release_l3_process(pc); | |
2673 | } | |
2674 | ||
2675 | static void | |
2676 | l3dss1_global_restart(struct l3_process *pc, u_char pr, void *arg) | |
2677 | { | |
2678 | u_char tmp[32]; | |
2679 | u_char *p; | |
2680 | u_char ri, ch = 0, chan = 0; | |
2681 | int l; | |
2682 | struct sk_buff *skb = arg; | |
2683 | struct l3_process *up; | |
2684 | ||
2685 | newl3state(pc, 2); | |
2686 | L3DelTimer(&pc->timer); | |
2687 | p = skb->data; | |
2688 | if ((p = findie(p, skb->len, IE_RESTART_IND, 0))) { | |
2689 | ri = p[2]; | |
2690 | l3_debug(pc->st, "Restart %x", ri); | |
2691 | } else { | |
2692 | l3_debug(pc->st, "Restart without restart IE"); | |
2693 | ri = 0x86; | |
2694 | } | |
2695 | p = skb->data; | |
2696 | if ((p = findie(p, skb->len, IE_CHANNEL_ID, 0))) { | |
2697 | chan = p[2] & 3; | |
2698 | ch = p[2]; | |
2699 | if (pc->st->l3.debug) | |
2700 | l3_debug(pc->st, "Restart for channel %d", chan); | |
2701 | } | |
2702 | newl3state(pc, 2); | |
2703 | up = pc->st->l3.proc; | |
2704 | while (up) { | |
2705 | if ((ri & 7) == 7) | |
2706 | up->st->lli.l4l3(up->st, CC_RESTART | REQUEST, up); | |
2707 | else if (up->para.bchannel == chan) | |
2708 | up->st->lli.l4l3(up->st, CC_RESTART | REQUEST, up); | |
2709 | up = up->next; | |
2710 | } | |
2711 | p = tmp; | |
2712 | MsgHead(p, pc->callref, MT_RESTART_ACKNOWLEDGE); | |
2713 | if (chan) { | |
2714 | *p++ = IE_CHANNEL_ID; | |
2715 | *p++ = 1; | |
2716 | *p++ = ch | 0x80; | |
2717 | } | |
2718 | *p++ = 0x79; /* RESTART Ind */ | |
2719 | *p++ = 1; | |
2720 | *p++ = ri; | |
2721 | l = p - tmp; | |
2722 | if (!(skb = l3_alloc_skb(l))) | |
2723 | return; | |
2724 | memcpy(skb_put(skb, l), tmp, l); | |
2725 | newl3state(pc, 0); | |
2726 | l3_msg(pc->st, DL_DATA | REQUEST, skb); | |
2727 | } | |
2728 | ||
2729 | static void | |
2730 | l3dss1_dl_reset(struct l3_process *pc, u_char pr, void *arg) | |
2731 | { | |
475be4d8 JP |
2732 | pc->para.cause = 0x29; /* Temporary failure */ |
2733 | pc->para.loc = 0; | |
2734 | l3dss1_disconnect_req(pc, pr, NULL); | |
2735 | pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc); | |
1da177e4 LT |
2736 | } |
2737 | ||
2738 | static void | |
2739 | l3dss1_dl_release(struct l3_process *pc, u_char pr, void *arg) | |
2740 | { | |
475be4d8 JP |
2741 | newl3state(pc, 0); |
2742 | pc->para.cause = 0x1b; /* Destination out of order */ | |
2743 | pc->para.loc = 0; | |
2744 | pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc); | |
2745 | release_l3_process(pc); | |
1da177e4 LT |
2746 | } |
2747 | ||
2748 | static void | |
2749 | l3dss1_dl_reestablish(struct l3_process *pc, u_char pr, void *arg) | |
2750 | { | |
475be4d8 JP |
2751 | L3DelTimer(&pc->timer); |
2752 | L3AddTimer(&pc->timer, T309, CC_T309); | |
2753 | l3_msg(pc->st, DL_ESTABLISH | REQUEST, NULL); | |
1da177e4 | 2754 | } |
475be4d8 | 2755 | |
1da177e4 LT |
2756 | static void |
2757 | l3dss1_dl_reest_status(struct l3_process *pc, u_char pr, void *arg) | |
2758 | { | |
2759 | L3DelTimer(&pc->timer); | |
475be4d8 JP |
2760 | |
2761 | pc->para.cause = 0x1F; /* normal, unspecified */ | |
1da177e4 LT |
2762 | l3dss1_status_send(pc, 0, NULL); |
2763 | } | |
2764 | ||
2765 | /* *INDENT-OFF* */ | |
2766 | static struct stateentry downstatelist[] = | |
2767 | { | |
2768 | {SBIT(0), | |
2769 | CC_SETUP | REQUEST, l3dss1_setup_req}, | |
2770 | {SBIT(0), | |
2771 | CC_RESUME | REQUEST, l3dss1_resume_req}, | |
2772 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(6) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(25), | |
2773 | CC_DISCONNECT | REQUEST, l3dss1_disconnect_req}, | |
2774 | {SBIT(12), | |
2775 | CC_RELEASE | REQUEST, l3dss1_release_req}, | |
2776 | {ALL_STATES, | |
2777 | CC_RESTART | REQUEST, l3dss1_restart}, | |
2778 | {SBIT(6) | SBIT(25), | |
2779 | CC_IGNORE | REQUEST, l3dss1_reset}, | |
2780 | {SBIT(6) | SBIT(25), | |
2781 | CC_REJECT | REQUEST, l3dss1_reject_req}, | |
2782 | {SBIT(6) | SBIT(25), | |
2783 | CC_PROCEED_SEND | REQUEST, l3dss1_proceed_req}, | |
2784 | {SBIT(6), | |
2785 | CC_MORE_INFO | REQUEST, l3dss1_setup_ack_req}, | |
2786 | {SBIT(25), | |
2787 | CC_MORE_INFO | REQUEST, l3dss1_dummy}, | |
2788 | {SBIT(6) | SBIT(9) | SBIT(25), | |
2789 | CC_ALERTING | REQUEST, l3dss1_alert_req}, | |
2790 | {SBIT(6) | SBIT(7) | SBIT(9) | SBIT(25), | |
2791 | CC_SETUP | RESPONSE, l3dss1_setup_rsp}, | |
2792 | {SBIT(10), | |
2793 | CC_SUSPEND | REQUEST, l3dss1_suspend_req}, | |
475be4d8 JP |
2794 | {SBIT(7) | SBIT(9) | SBIT(25), |
2795 | CC_REDIR | REQUEST, l3dss1_redir_req}, | |
2796 | {SBIT(6), | |
2797 | CC_REDIR | REQUEST, l3dss1_redir_req_early}, | |
2798 | {SBIT(9) | SBIT(25), | |
2799 | CC_DISCONNECT | REQUEST, l3dss1_disconnect_req}, | |
1da177e4 LT |
2800 | {SBIT(25), |
2801 | CC_T302, l3dss1_t302}, | |
2802 | {SBIT(1), | |
2803 | CC_T303, l3dss1_t303}, | |
2804 | {SBIT(2), | |
2805 | CC_T304, l3dss1_t304}, | |
2806 | {SBIT(3), | |
2807 | CC_T310, l3dss1_t310}, | |
2808 | {SBIT(8), | |
2809 | CC_T313, l3dss1_t313}, | |
2810 | {SBIT(11), | |
2811 | CC_T305, l3dss1_t305}, | |
2812 | {SBIT(15), | |
2813 | CC_T319, l3dss1_t319}, | |
2814 | {SBIT(17), | |
2815 | CC_T318, l3dss1_t318}, | |
2816 | {SBIT(19), | |
2817 | CC_T308_1, l3dss1_t308_1}, | |
2818 | {SBIT(19), | |
2819 | CC_T308_2, l3dss1_t308_2}, | |
2820 | {SBIT(10), | |
2821 | CC_T309, l3dss1_dl_release}, | |
2822 | }; | |
2823 | ||
1da177e4 LT |
2824 | static struct stateentry datastatelist[] = |
2825 | { | |
2826 | {ALL_STATES, | |
2827 | MT_STATUS_ENQUIRY, l3dss1_status_enq}, | |
2828 | {ALL_STATES, | |
2829 | MT_FACILITY, l3dss1_facility}, | |
2830 | {SBIT(19), | |
2831 | MT_STATUS, l3dss1_release_ind}, | |
2832 | {ALL_STATES, | |
2833 | MT_STATUS, l3dss1_status}, | |
2834 | {SBIT(0), | |
2835 | MT_SETUP, l3dss1_setup}, | |
2836 | {SBIT(6) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(12) | | |
2837 | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25), | |
2838 | MT_SETUP, l3dss1_dummy}, | |
2839 | {SBIT(1) | SBIT(2), | |
2840 | MT_CALL_PROCEEDING, l3dss1_call_proc}, | |
2841 | {SBIT(1), | |
2842 | MT_SETUP_ACKNOWLEDGE, l3dss1_setup_ack}, | |
2843 | {SBIT(2) | SBIT(3), | |
2844 | MT_ALERTING, l3dss1_alerting}, | |
2845 | {SBIT(2) | SBIT(3), | |
2846 | MT_PROGRESS, l3dss1_progress}, | |
2847 | {SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | | |
2848 | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25), | |
2849 | MT_INFORMATION, l3dss1_information}, | |
2850 | {SBIT(10) | SBIT(11) | SBIT(15), | |
2851 | MT_NOTIFY, l3dss1_notify}, | |
2852 | {SBIT(0) | SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(10) | | |
2853 | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25), | |
2854 | MT_RELEASE_COMPLETE, l3dss1_release_cmpl}, | |
2855 | {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), | |
2856 | MT_RELEASE, l3dss1_release}, | |
2857 | {SBIT(19), MT_RELEASE, l3dss1_release_ind}, | |
2858 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(15) | SBIT(17) | SBIT(25), | |
2859 | MT_DISCONNECT, l3dss1_disconnect}, | |
2860 | {SBIT(19), | |
2861 | MT_DISCONNECT, l3dss1_dummy}, | |
2862 | {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4), | |
2863 | MT_CONNECT, l3dss1_connect}, | |
2864 | {SBIT(8), | |
2865 | MT_CONNECT_ACKNOWLEDGE, l3dss1_connect_ack}, | |
2866 | {SBIT(15), | |
2867 | MT_SUSPEND_ACKNOWLEDGE, l3dss1_suspend_ack}, | |
2868 | {SBIT(15), | |
2869 | MT_SUSPEND_REJECT, l3dss1_suspend_rej}, | |
2870 | {SBIT(17), | |
2871 | MT_RESUME_ACKNOWLEDGE, l3dss1_resume_ack}, | |
2872 | {SBIT(17), | |
2873 | MT_RESUME_REJECT, l3dss1_resume_rej}, | |
2874 | }; | |
2875 | ||
1da177e4 LT |
2876 | static struct stateentry globalmes_list[] = |
2877 | { | |
2878 | {ALL_STATES, | |
2879 | MT_STATUS, l3dss1_status}, | |
2880 | {SBIT(0), | |
2881 | MT_RESTART, l3dss1_global_restart}, | |
2882 | /* {SBIT(1), | |
475be4d8 | 2883 | MT_RESTART_ACKNOWLEDGE, l3dss1_restart_ack}, |
1da177e4 LT |
2884 | */ |
2885 | }; | |
1da177e4 LT |
2886 | |
2887 | static struct stateentry manstatelist[] = | |
2888 | { | |
475be4d8 JP |
2889 | {SBIT(2), |
2890 | DL_ESTABLISH | INDICATION, l3dss1_dl_reset}, | |
2891 | {SBIT(10), | |
2892 | DL_ESTABLISH | CONFIRM, l3dss1_dl_reest_status}, | |
2893 | {SBIT(10), | |
2894 | DL_RELEASE | INDICATION, l3dss1_dl_reestablish}, | |
2895 | {ALL_STATES, | |
2896 | DL_RELEASE | INDICATION, l3dss1_dl_release}, | |
1da177e4 LT |
2897 | }; |
2898 | ||
1da177e4 LT |
2899 | /* *INDENT-ON* */ |
2900 | ||
2901 | ||
2902 | static void | |
2903 | global_handler(struct PStack *st, int mt, struct sk_buff *skb) | |
2904 | { | |
2905 | u_char tmp[16]; | |
2906 | u_char *p = tmp; | |
2907 | int l; | |
2908 | int i; | |
2909 | struct l3_process *proc = st->l3.global; | |
2910 | ||
2911 | proc->callref = skb->data[2]; /* cr flag */ | |
ba2d6ccb | 2912 | for (i = 0; i < ARRAY_SIZE(globalmes_list); i++) |
1da177e4 LT |
2913 | if ((mt == globalmes_list[i].primitive) && |
2914 | ((1 << proc->state) & globalmes_list[i].state)) | |
2915 | break; | |
ba2d6ccb | 2916 | if (i == ARRAY_SIZE(globalmes_list)) { |
1da177e4 LT |
2917 | if (st->l3.debug & L3_DEB_STATE) { |
2918 | l3_debug(st, "dss1 global state %d mt %x unhandled", | |
475be4d8 | 2919 | proc->state, mt); |
1da177e4 LT |
2920 | } |
2921 | MsgHead(p, proc->callref, MT_STATUS); | |
2922 | *p++ = IE_CAUSE; | |
2923 | *p++ = 0x2; | |
2924 | *p++ = 0x80; | |
475be4d8 | 2925 | *p++ = 81 | 0x80; /* invalid cr */ |
1da177e4 LT |
2926 | *p++ = 0x14; /* CallState */ |
2927 | *p++ = 0x1; | |
2928 | *p++ = proc->state & 0x3f; | |
2929 | l = p - tmp; | |
2930 | if (!(skb = l3_alloc_skb(l))) | |
2931 | return; | |
2932 | memcpy(skb_put(skb, l), tmp, l); | |
2933 | l3_msg(proc->st, DL_DATA | REQUEST, skb); | |
2934 | } else { | |
2935 | if (st->l3.debug & L3_DEB_STATE) { | |
2936 | l3_debug(st, "dss1 global %d mt %x", | |
475be4d8 | 2937 | proc->state, mt); |
1da177e4 LT |
2938 | } |
2939 | globalmes_list[i].rout(proc, mt, skb); | |
2940 | } | |
2941 | } | |
2942 | ||
2943 | static void | |
2944 | dss1up(struct PStack *st, int pr, void *arg) | |
2945 | { | |
cf117eaf | 2946 | int i, mt, cr, callState; |
1da177e4 LT |
2947 | char *ptr; |
2948 | u_char *p; | |
2949 | struct sk_buff *skb = arg; | |
2950 | struct l3_process *proc; | |
2951 | ||
2952 | switch (pr) { | |
475be4d8 JP |
2953 | case (DL_DATA | INDICATION): |
2954 | case (DL_UNIT_DATA | INDICATION): | |
2955 | break; | |
2956 | case (DL_ESTABLISH | CONFIRM): | |
2957 | case (DL_ESTABLISH | INDICATION): | |
2958 | case (DL_RELEASE | INDICATION): | |
2959 | case (DL_RELEASE | CONFIRM): | |
2960 | l3_msg(st, pr, arg); | |
2961 | return; | |
2962 | break; | |
2963 | default: | |
2964 | printk(KERN_ERR "HiSax dss1up unknown pr=%04x\n", pr); | |
2965 | return; | |
1da177e4 LT |
2966 | } |
2967 | if (skb->len < 3) { | |
2968 | l3_debug(st, "dss1up frame too short(%d)", skb->len); | |
2969 | dev_kfree_skb(skb); | |
2970 | return; | |
2971 | } | |
2972 | ||
2973 | if (skb->data[0] != PROTO_DIS_EURO) { | |
2974 | if (st->l3.debug & L3_DEB_PROTERR) { | |
2975 | l3_debug(st, "dss1up%sunexpected discriminator %x message len %d", | |
2976 | (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", | |
2977 | skb->data[0], skb->len); | |
2978 | } | |
2979 | dev_kfree_skb(skb); | |
2980 | return; | |
2981 | } | |
2982 | cr = getcallref(skb->data); | |
2983 | if (skb->len < ((skb->data[1] & 0x0f) + 3)) { | |
2984 | l3_debug(st, "dss1up frame too short(%d)", skb->len); | |
2985 | dev_kfree_skb(skb); | |
2986 | return; | |
2987 | } | |
2988 | mt = skb->data[skb->data[1] + 2]; | |
2989 | if (st->l3.debug & L3_DEB_STATE) | |
2990 | l3_debug(st, "dss1up cr %d", cr); | |
2991 | if (cr == -2) { /* wrong Callref */ | |
2992 | if (st->l3.debug & L3_DEB_WARN) | |
2993 | l3_debug(st, "dss1up wrong Callref"); | |
2994 | dev_kfree_skb(skb); | |
2995 | return; | |
2996 | } else if (cr == -1) { /* Dummy Callref */ | |
2997 | if (mt == MT_FACILITY) | |
2998 | if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) { | |
475be4d8 JP |
2999 | l3dss1_parse_facility(st, NULL, |
3000 | (pr == (DL_DATA | INDICATION)) ? -1 : -2, p); | |
1da177e4 | 3001 | dev_kfree_skb(skb); |
475be4d8 | 3002 | return; |
1da177e4 LT |
3003 | } |
3004 | if (st->l3.debug & L3_DEB_WARN) | |
3005 | l3_debug(st, "dss1up dummy Callref (no facility msg or ie)"); | |
3006 | dev_kfree_skb(skb); | |
3007 | return; | |
475be4d8 JP |
3008 | } else if ((((skb->data[1] & 0x0f) == 1) && (0 == (cr & 0x7f))) || |
3009 | (((skb->data[1] & 0x0f) == 2) && (0 == (cr & 0x7fff)))) { /* Global CallRef */ | |
1da177e4 LT |
3010 | if (st->l3.debug & L3_DEB_STATE) |
3011 | l3_debug(st, "dss1up Global CallRef"); | |
3012 | global_handler(st, mt, skb); | |
3013 | dev_kfree_skb(skb); | |
3014 | return; | |
3015 | } else if (!(proc = getl3proc(st, cr))) { | |
3016 | /* No transaction process exist, that means no call with | |
3017 | * this callreference is active | |
3018 | */ | |
3019 | if (mt == MT_SETUP) { | |
3020 | /* Setup creates a new transaction process */ | |
3021 | if (skb->data[2] & 0x80) { | |
3022 | /* Setup with wrong CREF flag */ | |
3023 | if (st->l3.debug & L3_DEB_STATE) | |
3024 | l3_debug(st, "dss1up wrong CRef flag"); | |
3025 | dev_kfree_skb(skb); | |
3026 | return; | |
3027 | } | |
3028 | if (!(proc = dss1_new_l3_process(st, cr))) { | |
3029 | /* May be to answer with RELEASE_COMPLETE and | |
3030 | * CAUSE 0x2f "Resource unavailable", but this | |
3031 | * need a new_l3_process too ... arghh | |
3032 | */ | |
3033 | dev_kfree_skb(skb); | |
3034 | return; | |
3035 | } | |
3036 | } else if (mt == MT_STATUS) { | |
1da177e4 LT |
3037 | if ((ptr = findie(skb->data, skb->len, IE_CAUSE, 0)) != NULL) { |
3038 | ptr++; | |
3039 | if (*ptr++ == 2) | |
3040 | ptr++; | |
1da177e4 LT |
3041 | } |
3042 | callState = 0; | |
3043 | if ((ptr = findie(skb->data, skb->len, IE_CALL_STATE, 0)) != NULL) { | |
3044 | ptr++; | |
3045 | if (*ptr++ == 2) | |
3046 | ptr++; | |
3047 | callState = *ptr; | |
3048 | } | |
3049 | /* ETS 300-104 part 2.4.1 | |
3050 | * if setup has not been made and a message type | |
3051 | * MT_STATUS is received with call state == 0, | |
3052 | * we must send nothing | |
3053 | */ | |
3054 | if (callState != 0) { | |
3055 | /* ETS 300-104 part 2.4.2 | |
3056 | * if setup has not been made and a message type | |
3057 | * MT_STATUS is received with call state != 0, | |
3058 | * we must send MT_RELEASE_COMPLETE cause 101 | |
3059 | */ | |
3060 | if ((proc = dss1_new_l3_process(st, cr))) { | |
3061 | proc->para.cause = 101; | |
3062 | l3dss1_msg_without_setup(proc, 0, NULL); | |
3063 | } | |
3064 | } | |
3065 | dev_kfree_skb(skb); | |
3066 | return; | |
3067 | } else if (mt == MT_RELEASE_COMPLETE) { | |
3068 | dev_kfree_skb(skb); | |
3069 | return; | |
3070 | } else { | |
3071 | /* ETS 300-104 part 2 | |
3072 | * if setup has not been made and a message type | |
3073 | * (except MT_SETUP and RELEASE_COMPLETE) is received, | |
3074 | * we must send MT_RELEASE_COMPLETE cause 81 */ | |
3075 | dev_kfree_skb(skb); | |
3076 | if ((proc = dss1_new_l3_process(st, cr))) { | |
3077 | proc->para.cause = 81; | |
3078 | l3dss1_msg_without_setup(proc, 0, NULL); | |
3079 | } | |
3080 | return; | |
3081 | } | |
3082 | } | |
3083 | if (l3dss1_check_messagetype_validity(proc, mt, skb)) { | |
3084 | dev_kfree_skb(skb); | |
3085 | return; | |
3086 | } | |
475be4d8 JP |
3087 | if ((p = findie(skb->data, skb->len, IE_DISPLAY, 0)) != NULL) |
3088 | l3dss1_deliver_display(proc, pr, p); /* Display IE included */ | |
ba2d6ccb | 3089 | for (i = 0; i < ARRAY_SIZE(datastatelist); i++) |
1da177e4 LT |
3090 | if ((mt == datastatelist[i].primitive) && |
3091 | ((1 << proc->state) & datastatelist[i].state)) | |
3092 | break; | |
ba2d6ccb | 3093 | if (i == ARRAY_SIZE(datastatelist)) { |
1da177e4 LT |
3094 | if (st->l3.debug & L3_DEB_STATE) { |
3095 | l3_debug(st, "dss1up%sstate %d mt %#x unhandled", | |
475be4d8 JP |
3096 | (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", |
3097 | proc->state, mt); | |
1da177e4 LT |
3098 | } |
3099 | if ((MT_RELEASE_COMPLETE != mt) && (MT_RELEASE != mt)) { | |
3100 | proc->para.cause = 101; | |
3101 | l3dss1_status_send(proc, pr, skb); | |
3102 | } | |
3103 | } else { | |
3104 | if (st->l3.debug & L3_DEB_STATE) { | |
3105 | l3_debug(st, "dss1up%sstate %d mt %x", | |
475be4d8 JP |
3106 | (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", |
3107 | proc->state, mt); | |
1da177e4 LT |
3108 | } |
3109 | datastatelist[i].rout(proc, pr, skb); | |
3110 | } | |
3111 | dev_kfree_skb(skb); | |
3112 | return; | |
3113 | } | |
3114 | ||
3115 | static void | |
3116 | dss1down(struct PStack *st, int pr, void *arg) | |
3117 | { | |
3118 | int i, cr; | |
3119 | struct l3_process *proc; | |
3120 | struct Channel *chan; | |
3121 | ||
3122 | if ((DL_ESTABLISH | REQUEST) == pr) { | |
3123 | l3_msg(st, pr, NULL); | |
3124 | return; | |
3125 | } else if (((CC_SETUP | REQUEST) == pr) || ((CC_RESUME | REQUEST) == pr)) { | |
3126 | chan = arg; | |
3127 | cr = newcallref(); | |
3128 | cr |= 0x80; | |
3129 | if ((proc = dss1_new_l3_process(st, cr))) { | |
3130 | proc->chan = chan; | |
3131 | chan->proc = proc; | |
3132 | memcpy(&proc->para.setup, &chan->setup, sizeof(setup_parm)); | |
3133 | proc->callref = cr; | |
3134 | } | |
3135 | } else { | |
3136 | proc = arg; | |
3137 | } | |
3138 | if (!proc) { | |
3139 | printk(KERN_ERR "HiSax dss1down without proc pr=%04x\n", pr); | |
3140 | return; | |
3141 | } | |
3142 | ||
475be4d8 JP |
3143 | if (pr == (CC_TDSS1_IO | REQUEST)) { |
3144 | l3dss1_io_timer(proc); /* timer expires */ | |
1da177e4 | 3145 | return; |
475be4d8 | 3146 | } |
1da177e4 | 3147 | |
ba2d6ccb | 3148 | for (i = 0; i < ARRAY_SIZE(downstatelist); i++) |
1da177e4 LT |
3149 | if ((pr == downstatelist[i].primitive) && |
3150 | ((1 << proc->state) & downstatelist[i].state)) | |
3151 | break; | |
ba2d6ccb | 3152 | if (i == ARRAY_SIZE(downstatelist)) { |
1da177e4 LT |
3153 | if (st->l3.debug & L3_DEB_STATE) { |
3154 | l3_debug(st, "dss1down state %d prim %#x unhandled", | |
475be4d8 | 3155 | proc->state, pr); |
1da177e4 LT |
3156 | } |
3157 | } else { | |
3158 | if (st->l3.debug & L3_DEB_STATE) { | |
3159 | l3_debug(st, "dss1down state %d prim %#x", | |
475be4d8 | 3160 | proc->state, pr); |
1da177e4 LT |
3161 | } |
3162 | downstatelist[i].rout(proc, pr, arg); | |
3163 | } | |
3164 | } | |
3165 | ||
3166 | static void | |
3167 | dss1man(struct PStack *st, int pr, void *arg) | |
3168 | { | |
475be4d8 JP |
3169 | int i; |
3170 | struct l3_process *proc = arg; | |
3171 | ||
3172 | if (!proc) { | |
3173 | printk(KERN_ERR "HiSax dss1man without proc pr=%04x\n", pr); | |
3174 | return; | |
3175 | } | |
3176 | for (i = 0; i < ARRAY_SIZE(manstatelist); i++) | |
3177 | if ((pr == manstatelist[i].primitive) && | |
3178 | ((1 << proc->state) & manstatelist[i].state)) | |
3179 | break; | |
3180 | if (i == ARRAY_SIZE(manstatelist)) { | |
3181 | if (st->l3.debug & L3_DEB_STATE) { | |
3182 | l3_debug(st, "cr %d dss1man state %d prim %#x unhandled", | |
3183 | proc->callref & 0x7f, proc->state, pr); | |
3184 | } | |
3185 | } else { | |
3186 | if (st->l3.debug & L3_DEB_STATE) { | |
3187 | l3_debug(st, "cr %d dss1man state %d prim %#x", | |
3188 | proc->callref & 0x7f, proc->state, pr); | |
3189 | } | |
3190 | manstatelist[i].rout(proc, pr, arg); | |
3191 | } | |
3192 | } | |
3193 | ||
1da177e4 LT |
3194 | void |
3195 | setstack_dss1(struct PStack *st) | |
3196 | { | |
3197 | char tmp[64]; | |
3198 | int i; | |
3199 | ||
3200 | st->lli.l4l3 = dss1down; | |
3201 | st->lli.l4l3_proto = l3dss1_cmd_global; | |
3202 | st->l2.l2l3 = dss1up; | |
3203 | st->l3.l3ml3 = dss1man; | |
3204 | st->l3.N303 = 1; | |
3205 | st->prot.dss1.last_invoke_id = 0; | |
3206 | st->prot.dss1.invoke_used[0] = 1; /* Bit 0 must always be set to 1 */ | |
3207 | i = 1; | |
475be4d8 JP |
3208 | while (i < 32) |
3209 | st->prot.dss1.invoke_used[i++] = 0; | |
1da177e4 LT |
3210 | |
3211 | if (!(st->l3.global = kmalloc(sizeof(struct l3_process), GFP_ATOMIC))) { | |
3212 | printk(KERN_ERR "HiSax can't get memory for dss1 global CR\n"); | |
3213 | } else { | |
3214 | st->l3.global->state = 0; | |
3215 | st->l3.global->callref = 0; | |
3216 | st->l3.global->next = NULL; | |
3217 | st->l3.global->debug = L3_DEB_WARN; | |
3218 | st->l3.global->st = st; | |
3219 | st->l3.global->N303 = 1; | |
475be4d8 | 3220 | st->l3.global->prot.dss1.invoke_id = 0; |
1da177e4 LT |
3221 | |
3222 | L3InitTimer(st->l3.global, &st->l3.global->timer); | |
3223 | } | |
3224 | strcpy(tmp, dss1_revision); | |
3225 | printk(KERN_INFO "HiSax: DSS1 Rev. %s\n", HiSax_getrev(tmp)); | |
3226 | } |